horok/bind9
1
0
Fork 0
Code Activity
bind9/bin/named/server.c
Daniel Baumann f66ff7eae6
Adding upstream version 1:9.20.9. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-21 13:32:37 +02:00

17068 lines
444 KiB
C
Raw Permalink Blame History

/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <ctype.h>
#include <inttypes.h>
#include <limits.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_DNSTAP
#include <fstrm.h>
#endif
#ifdef HAVE_LIBSYSTEMD
#include <systemd/sd-daemon.h>
#endif
#include <isc/async.h>
#include <isc/attributes.h>
#include <isc/base64.h>
#include <isc/commandline.h>
#include <isc/dir.h>
#include <isc/file.h>
#include <isc/fips.h>
#include <isc/hash.h>
#include <isc/hex.h>
#include <isc/hmac.h>
#include <isc/httpd.h>
#include <isc/job.h>
#include <isc/lex.h>
#include <isc/loop.h>
#include <isc/meminfo.h>
#include <isc/netmgr.h>
#include <isc/nonce.h>
#include <isc/parseint.h>
#include <isc/portset.h>
#include <isc/refcount.h>
#include <isc/result.h>
#include <isc/signal.h>
#include <isc/siphash.h>
#include <isc/stats.h>
#include <isc/stdio.h>
#include <isc/string.h>
#include <isc/time.h>
#include <isc/timer.h>
#include <isc/util.h>
#include <dns/adb.h>
#include <dns/badcache.h>
#include <dns/cache.h>
#include <dns/catz.h>
#include <dns/db.h>
#include <dns/dispatch.h>
#include <dns/dlz.h>
#include <dns/dns64.h>
#include <dns/dnsrps.h>
#include <dns/dnssec.h>
#include <dns/dyndb.h>
#include <dns/fixedname.h>
#include <dns/forward.h>
#include <dns/geoip.h>
#include <dns/journal.h>
#include <dns/kasp.h>
#include <dns/keymgr.h>
#include <dns/keystore.h>
#include <dns/keytable.h>
#include <dns/keyvalues.h>
#include <dns/master.h>
#include <dns/masterdump.h>
#include <dns/nametree.h>
#include <dns/nsec3.h>
#include <dns/nta.h>
#include <dns/order.h>
#include <dns/peer.h>
#include <dns/private.h>
#include <dns/rbt.h>
#include <dns/rdataclass.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/rdatastruct.h>
#include <dns/resolver.h>
#include <dns/rootns.h>
#include <dns/rriterator.h>
#include <dns/secalg.h>
#include <dns/soa.h>
#include <dns/stats.h>
#include <dns/time.h>
#include <dns/tkey.h>
#include <dns/tsig.h>
#include <dns/ttl.h>
#include <dns/view.h>
#include <dns/zone.h>
#include <dns/zt.h>
#include <dst/dst.h>
#include <isccfg/check.h>
#include <isccfg/grammar.h>
#include <isccfg/kaspconf.h>
#include <isccfg/namedconf.h>
#include <ns/client.h>
#include <ns/hooks.h>
#include <ns/interfacemgr.h>
#include <ns/listenlist.h>
#include <named/config.h>
#include <named/control.h>
#if defined(HAVE_GEOIP2)
#include <named/geoip.h>
#endif /* HAVE_GEOIP2 */
#include <named/log.h>
#include <named/logconf.h>
#include <named/main.h>
#include <named/os.h>
#include <named/server.h>
#include <named/statschannel.h>
#include <named/tkeyconf.h>
#include <named/transportconf.h>
#include <named/tsigconf.h>
#include <named/zoneconf.h>
#ifdef HAVE_LIBSCF
#include <stdlib.h>
#include <named/smf_globals.h>
#endif /* ifdef HAVE_LIBSCF */
/* On DragonFly BSD the header does not provide jemalloc API */
#if defined(HAVE_MALLOC_NP_H) && !defined(__DragonFly__)
#include <malloc_np.h>
#define JEMALLOC_API_SUPPORTED 1
#elif defined(HAVE_JEMALLOC)
#include <jemalloc/jemalloc.h>
#define JEMALLOC_API_SUPPORTED 1
#endif
#ifdef HAVE_LMDB
#include <lmdb.h>
#define configure_newzones configure_newzones_db
#define dumpzone dumpzone_db
#else /* HAVE_LMDB */
#define configure_newzones configure_newzones_file
#define dumpzone dumpzone_file
#endif /* HAVE_LMDB */
#ifndef SIZE_MAX
#define SIZE_MAX ((size_t)-1)
#endif /* ifndef SIZE_MAX */
#ifndef SIZE_AS_PERCENT
#define SIZE_AS_PERCENT ((size_t)-2)
#endif /* ifndef SIZE_AS_PERCENT */
/* RFC7828 defines timeout as 16-bit value specified in units of 100
* milliseconds, so the maximum and minimum advertised and keepalive
* timeouts are capped by the data type (it's ~109 minutes)
*/
#define MIN_INITIAL_TIMEOUT UINT32_C(2500) /* 2.5 seconds */
#define MAX_INITIAL_TIMEOUT UINT32_C(120000) /* 2 minutes */
#define MIN_IDLE_TIMEOUT UINT32_C(100) /* 0.1 seconds */
#define MAX_IDLE_TIMEOUT UINT32_C(120000) /* 2 minutes */
#define MIN_KEEPALIVE_TIMEOUT UINT32_C(100) /* 0.1 seconds */
#define MAX_KEEPALIVE_TIMEOUT UINT32_C(UINT16_MAX * 100)
#define MIN_ADVERTISED_TIMEOUT UINT32_C(0) /* No minimum */
#define MAX_ADVERTISED_TIMEOUT UINT32_C(UINT16_MAX * 100)
/*%
* Check an operation for failure. Assumes that the function
* using it has a 'result' variable and a 'cleanup' label.
*/
#define CHECK(op) \
do { \
result = (op); \
if (result != ISC_R_SUCCESS) \
goto cleanup; \
} while (0)
#define TCHECK(op) \
do { \
tresult = (op); \
if (tresult != ISC_R_SUCCESS) { \
isc_buffer_clear(*text); \
goto cleanup; \
} \
} while (0)
#define CHECKM(op, msg) \
do { \
result = (op); \
if (result != ISC_R_SUCCESS) { \
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, \
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, \
"%s: %s", msg, \
isc_result_totext(result)); \
goto cleanup; \
} \
} while (0)
#define CHECKMF(op, msg, file) \
do { \
result = (op); \
if (result != ISC_R_SUCCESS) { \
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, \
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, \
"%s '%s': %s", msg, file, \
isc_result_totext(result)); \
goto cleanup; \
} \
} while (0)
#define CHECKFATAL(op, msg) \
{ \
result = (op); \
if (result != ISC_R_SUCCESS) { \
fatal(msg, result); \
} \
}
/*%
* Maximum ADB size for views that share a cache. Use this limit to suppress
* the total of memory footprint, which should be the main reason for sharing
* a cache. Only effective when a finite max-cache-size is specified.
* This is currently defined to be 8MB.
*/
#define MAX_ADB_SIZE_FOR_CACHESHARE 8388608U
struct named_dispatch {
isc_sockaddr_t addr;
unsigned int dispatchgen;
dns_dispatch_t *dispatch;
ISC_LINK(struct named_dispatch) link;
};
struct named_cache {
dns_cache_t *cache;
dns_view_t *primaryview;
bool needflush;
bool adbsizeadjusted;
dns_rdataclass_t rdclass;
ISC_LINK(named_cache_t) link;
};
struct dumpcontext {
isc_mem_t *mctx;
bool dumpcache;
bool dumpzones;
bool dumpadb;
bool dumpexpired;
bool dumpfail;
FILE *fp;
ISC_LIST(struct viewlistentry) viewlist;
struct viewlistentry *view;
struct zonelistentry *zone;
dns_dumpctx_t *mdctx;
dns_db_t *db;
dns_db_t *cache;
isc_loop_t *loop;
dns_dbversion_t *version;
};
struct viewlistentry {
dns_view_t *view;
ISC_LINK(struct viewlistentry) link;
ISC_LIST(struct zonelistentry) zonelist;
};
struct zonelistentry {
dns_zone_t *zone;
ISC_LINK(struct zonelistentry) link;
};
/*%
* Message-to-view matching context to run message signature validation
* asynchronously.
*/
typedef struct matching_view_ctx {
isc_netaddr_t *srcaddr;
isc_netaddr_t *destaddr;
dns_message_t *message;
dns_aclenv_t *env;
ns_server_t *sctx;
isc_loop_t *loop;
isc_job_cb cb;
void *cbarg;
isc_result_t *sigresult;
isc_result_t *viewmatchresult;
isc_result_t quota_result;
dns_view_t **viewp;
dns_view_t *view;
} matching_view_ctx_t;
/*%
* Configuration context to retain for each view that allows
* new zones to be added at runtime.
*/
typedef struct ns_cfgctx {
isc_mem_t *mctx;
cfg_parser_t *conf_parser;
cfg_parser_t *add_parser;
cfg_obj_t *config;
cfg_obj_t *vconfig;
cfg_obj_t *nzf_config;
cfg_aclconfctx_t *actx;
} ns_cfgctx_t;
/*%
* A function to write out added-zone configuration to the new_zone_file
* specified in 'view'. Maybe called by delete_zoneconf().
*/
typedef isc_result_t (*nzfwriter_t)(const cfg_obj_t *config, dns_view_t *view);
/*%
* Holds state information for the initial zone loading process.
* Uses the isc_refcount structure to count the number of views
* with pending zone loads, dereferencing as each view finishes.
*/
typedef struct {
named_server_t *server;
bool reconfig;
isc_refcount_t refs;
} ns_zoneload_t;
typedef struct {
named_server_t *server;
} catz_cb_data_t;
typedef struct catz_chgzone {
isc_mem_t *mctx;
dns_catz_entry_t *entry;
dns_catz_zone_t *origin;
dns_view_t *view;
catz_cb_data_t *cbd;
bool mod;
} catz_chgzone_t;
typedef struct catz_reconfig_data {
dns_catz_zone_t *catz;
const cfg_obj_t *config;
catz_cb_data_t *cbd;
} catz_reconfig_data_t;
typedef enum {
CATZ_ADDZONE,
CATZ_MODZONE,
CATZ_DELZONE,
} catz_type_t;
typedef struct {
unsigned int magic;
#define DZARG_MAGIC ISC_MAGIC('D', 'z', 'a', 'r')
isc_buffer_t **text;
isc_result_t result;
} ns_dzarg_t;
typedef enum {
MEMPROF_UNSUPPORTED = 0x00,
MEMPROF_INACTIVE = 0x01,
MEMPROF_FAILING = 0x02,
MEMPROF_OFF = 0x03,
MEMPROF_ON = 0x04,
} memprof_status;
static const char *memprof_status_text[] = {
[MEMPROF_UNSUPPORTED] = "UNSUPPORTED",
[MEMPROF_INACTIVE] = "INACTIVE",
[MEMPROF_FAILING] = "FAILING",
[MEMPROF_OFF] = "OFF",
[MEMPROF_ON] = "ON",
};
/*
* These zones should not leak onto the Internet.
*/
const char *empty_zones[] = {
/* RFC 1918 */
"10.IN-ADDR.ARPA", "16.172.IN-ADDR.ARPA", "17.172.IN-ADDR.ARPA",
"18.172.IN-ADDR.ARPA", "19.172.IN-ADDR.ARPA", "20.172.IN-ADDR.ARPA",
"21.172.IN-ADDR.ARPA", "22.172.IN-ADDR.ARPA", "23.172.IN-ADDR.ARPA",
"24.172.IN-ADDR.ARPA", "25.172.IN-ADDR.ARPA", "26.172.IN-ADDR.ARPA",
"27.172.IN-ADDR.ARPA", "28.172.IN-ADDR.ARPA", "29.172.IN-ADDR.ARPA",
"30.172.IN-ADDR.ARPA", "31.172.IN-ADDR.ARPA", "168.192.IN-ADDR.ARPA",
/* RFC 6598 */
"64.100.IN-ADDR.ARPA", "65.100.IN-ADDR.ARPA", "66.100.IN-ADDR.ARPA",
"67.100.IN-ADDR.ARPA", "68.100.IN-ADDR.ARPA", "69.100.IN-ADDR.ARPA",
"70.100.IN-ADDR.ARPA", "71.100.IN-ADDR.ARPA", "72.100.IN-ADDR.ARPA",
"73.100.IN-ADDR.ARPA", "74.100.IN-ADDR.ARPA", "75.100.IN-ADDR.ARPA",
"76.100.IN-ADDR.ARPA", "77.100.IN-ADDR.ARPA", "78.100.IN-ADDR.ARPA",
"79.100.IN-ADDR.ARPA", "80.100.IN-ADDR.ARPA", "81.100.IN-ADDR.ARPA",
"82.100.IN-ADDR.ARPA", "83.100.IN-ADDR.ARPA", "84.100.IN-ADDR.ARPA",
"85.100.IN-ADDR.ARPA", "86.100.IN-ADDR.ARPA", "87.100.IN-ADDR.ARPA",
"88.100.IN-ADDR.ARPA", "89.100.IN-ADDR.ARPA", "90.100.IN-ADDR.ARPA",
"91.100.IN-ADDR.ARPA", "92.100.IN-ADDR.ARPA", "93.100.IN-ADDR.ARPA",
"94.100.IN-ADDR.ARPA", "95.100.IN-ADDR.ARPA", "96.100.IN-ADDR.ARPA",
"97.100.IN-ADDR.ARPA", "98.100.IN-ADDR.ARPA", "99.100.IN-ADDR.ARPA",
"100.100.IN-ADDR.ARPA", "101.100.IN-ADDR.ARPA", "102.100.IN-ADDR.ARPA",
"103.100.IN-ADDR.ARPA", "104.100.IN-ADDR.ARPA", "105.100.IN-ADDR.ARPA",
"106.100.IN-ADDR.ARPA", "107.100.IN-ADDR.ARPA", "108.100.IN-ADDR.ARPA",
"109.100.IN-ADDR.ARPA", "110.100.IN-ADDR.ARPA", "111.100.IN-ADDR.ARPA",
"112.100.IN-ADDR.ARPA", "113.100.IN-ADDR.ARPA", "114.100.IN-ADDR.ARPA",
"115.100.IN-ADDR.ARPA", "116.100.IN-ADDR.ARPA", "117.100.IN-ADDR.ARPA",
"118.100.IN-ADDR.ARPA", "119.100.IN-ADDR.ARPA", "120.100.IN-ADDR.ARPA",
"121.100.IN-ADDR.ARPA", "122.100.IN-ADDR.ARPA", "123.100.IN-ADDR.ARPA",
"124.100.IN-ADDR.ARPA", "125.100.IN-ADDR.ARPA", "126.100.IN-ADDR.ARPA",
"127.100.IN-ADDR.ARPA",
/* RFC 5735 and RFC 5737 */
"0.IN-ADDR.ARPA", /* THIS NETWORK */
"127.IN-ADDR.ARPA", /* LOOPBACK */
"254.169.IN-ADDR.ARPA", /* LINK LOCAL */
"2.0.192.IN-ADDR.ARPA", /* TEST NET */
"100.51.198.IN-ADDR.ARPA", /* TEST NET 2 */
"113.0.203.IN-ADDR.ARPA", /* TEST NET 3 */
"255.255.255.255.IN-ADDR.ARPA", /* BROADCAST */
/* Local IPv6 Unicast Addresses */
"0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6."
"ARPA",
"1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6."
"ARPA",
/* LOCALLY ASSIGNED LOCAL ADDRESS SCOPE */
"D.F.IP6.ARPA", "8.E.F.IP6.ARPA", /* LINK LOCAL */
"9.E.F.IP6.ARPA", /* LINK LOCAL */
"A.E.F.IP6.ARPA", /* LINK LOCAL */
"B.E.F.IP6.ARPA", /* LINK LOCAL */
/* Example Prefix, RFC 3849. */
"8.B.D.0.1.0.0.2.IP6.ARPA",
/* RFC 7534 */
"EMPTY.AS112.ARPA",
/* RFC 8375 */
"HOME.ARPA",
/* RFC 9462 */
"RESOLVER.ARPA",
NULL
};
noreturn static void
fatal(const char *msg, isc_result_t result);
static void
named_server_reload(void *arg);
#ifdef HAVE_LIBNGHTTP2
static isc_result_t
listenelt_http(const cfg_obj_t *http, const uint16_t family, bool tls,
const ns_listen_tls_params_t *tls_params,
isc_tlsctx_cache_t *tlsctx_cache, in_port_t port,
isc_mem_t *mctx, isc_nm_proxy_type_t proxy,
ns_listenelt_t **target);
#endif
static isc_result_t
listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
cfg_aclconfctx_t *actx, isc_mem_t *mctx, uint16_t family,
isc_tlsctx_cache_t *tlsctx_cache, ns_listenelt_t **target);
static isc_result_t
listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
cfg_aclconfctx_t *actx, isc_mem_t *mctx, uint16_t family,
isc_tlsctx_cache_t *tlsctx_cache,
ns_listenlist_t **target);
static isc_result_t
configure_forward(const cfg_obj_t *config, dns_view_t *view,
const dns_name_t *origin, const cfg_obj_t *forwarders,
const cfg_obj_t *forwardtype);
static isc_result_t
configure_alternates(const cfg_obj_t *config, dns_view_t *view,
const cfg_obj_t *alternates);
static isc_result_t
configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
const cfg_obj_t *vconfig, dns_view_t *view,
dns_viewlist_t *viewlist, dns_kasplist_t *kasplist,
dns_keystorelist_t *keystores, cfg_aclconfctx_t *aclconf,
bool added, bool old_rpz_ok, bool is_catz_member, bool modify);
static void
configure_zone_setviewcommit(isc_result_t result, const cfg_obj_t *zconfig,
dns_view_t *view);
static isc_result_t
configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
cfg_aclconfctx_t *actx);
static const cfg_obj_t *
find_maplist(const cfg_obj_t *config, const char *listname, const char *name);
static isc_result_t
add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx);
static void
newzone_cfgctx_destroy(void **cfgp);
static isc_result_t
putstr(isc_buffer_t **b, const char *str);
static isc_result_t
putmem(isc_buffer_t **b, const char *str, size_t len);
static isc_result_t
putuint8(isc_buffer_t **b, uint8_t val);
static isc_result_t
putnull(isc_buffer_t **b);
#ifdef HAVE_LMDB
static isc_result_t
nzd_writable(dns_view_t *view);
static isc_result_t
nzd_open(dns_view_t *view, unsigned int flags, MDB_txn **txnp, MDB_dbi *dbi);
static isc_result_t
nzd_env_reopen(dns_view_t *view);
static void
nzd_env_close(dns_view_t *view);
static isc_result_t
nzd_close(MDB_txn **txnp, bool commit);
#else /* ifdef HAVE_LMDB */
static isc_result_t
nzf_append(dns_view_t *view, const cfg_obj_t *zconfig);
#endif /* ifdef HAVE_LMDB */
static isc_result_t
load_nzf(dns_view_t *view, ns_cfgctx_t *nzcfg);
/*%
* Configure a single view ACL at '*aclp'. Get its configuration from
* 'vconfig' (for per-view configuration) and maybe from 'config'
*/
static isc_result_t
configure_view_acl(const cfg_obj_t *vconfig, const cfg_obj_t *config,
const cfg_obj_t *gconfig, const char *aclname,
const char *acltuplename, cfg_aclconfctx_t *actx,
isc_mem_t *mctx, dns_acl_t **aclp) {
isc_result_t result;
const cfg_obj_t *maps[4];
const cfg_obj_t *aclobj = NULL;
int i = 0;
if (*aclp != NULL) {
dns_acl_detach(aclp);
}
if (vconfig != NULL) {
maps[i++] = cfg_tuple_get(vconfig, "options");
}
if (config != NULL) {
const cfg_obj_t *options = NULL;
(void)cfg_map_get(config, "options", &options);
if (options != NULL) {
maps[i++] = options;
}
}
if (gconfig != NULL) {
const cfg_obj_t *options = NULL;
(void)cfg_map_get(gconfig, "options", &options);
if (options != NULL) {
maps[i++] = options;
}
}
maps[i] = NULL;
(void)named_config_get(maps, aclname, &aclobj);
if (aclobj == NULL) {
/*
* No value available. *aclp == NULL.
*/
return ISC_R_SUCCESS;
}
if (acltuplename != NULL) {
/*
* If the ACL is given in an optional tuple, retrieve it.
* The parser should have ensured that a valid object be
* returned.
*/
aclobj = cfg_tuple_get(aclobj, acltuplename);
}
result = cfg_acl_fromconfig(aclobj, config, named_g_lctx, actx, mctx, 0,
aclp);
return result;
}
/*%
* Configure a sortlist at '*aclp'. Essentially the same as
* configure_view_acl() except it calls cfg_acl_fromconfig with a
* nest_level value of 2.
*/
static isc_result_t
configure_view_sortlist(const cfg_obj_t *vconfig, const cfg_obj_t *config,
cfg_aclconfctx_t *actx, isc_mem_t *mctx,
dns_acl_t **aclp) {
isc_result_t result;
const cfg_obj_t *maps[3];
const cfg_obj_t *aclobj = NULL;
int i = 0;
if (*aclp != NULL) {
dns_acl_detach(aclp);
}
if (vconfig != NULL) {
maps[i++] = cfg_tuple_get(vconfig, "options");
}
if (config != NULL) {
const cfg_obj_t *options = NULL;
(void)cfg_map_get(config, "options", &options);
if (options != NULL) {
maps[i++] = options;
}
}
maps[i] = NULL;
(void)named_config_get(maps, "sortlist", &aclobj);
if (aclobj == NULL) {
return ISC_R_SUCCESS;
}
/*
* Use a nest level of 3 for the "top level" of the sortlist;
* this means each entry in the top three levels will be stored
* as lists of separate, nested ACLs, rather than merged together
* into IP tables as is usually done with ACLs.
*/
result = cfg_acl_fromconfig(aclobj, config, named_g_lctx, actx, mctx, 3,
aclp);
return result;
}
static isc_result_t
configure_view_nametable(const cfg_obj_t *vconfig, const cfg_obj_t *config,
const char *confname, const char *conftuplename,
isc_mem_t *mctx, dns_nametree_t **ntp) {
isc_result_t result = ISC_R_SUCCESS;
const cfg_obj_t *maps[3];
const cfg_obj_t *obj = NULL;
const cfg_listelt_t *element = NULL;
int i = 0;
dns_fixedname_t fixed;
dns_name_t *name = NULL;
isc_buffer_t b;
const char *str = NULL;
const cfg_obj_t *nameobj = NULL;
if (*ntp != NULL) {
dns_nametree_detach(ntp);
}
dns_nametree_create(mctx, DNS_NAMETREE_BOOL, confname, ntp);
if (vconfig != NULL) {
maps[i++] = cfg_tuple_get(vconfig, "options");
}
if (config != NULL) {
const cfg_obj_t *options = NULL;
(void)cfg_map_get(config, "options", &options);
if (options != NULL) {
maps[i++] = options;
}
}
maps[i] = NULL;
(void)named_config_get(maps, confname, &obj);
if (obj == NULL) {
/*
* No value available. *ntp == NULL.
*/
return ISC_R_SUCCESS;
}
if (conftuplename != NULL) {
obj = cfg_tuple_get(obj, conftuplename);
if (cfg_obj_isvoid(obj)) {
return ISC_R_SUCCESS;
}
}
name = dns_fixedname_initname(&fixed);
for (element = cfg_list_first(obj); element != NULL;
element = cfg_list_next(element))
{
nameobj = cfg_listelt_value(element);
str = cfg_obj_asstring(nameobj);
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
result = dns_nametree_add(*ntp, name, true);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(nameobj, named_g_lctx, ISC_LOG_ERROR,
"failed to add %s for %s: %s", str,
confname, isc_result_totext(result));
goto cleanup;
}
}
return ISC_R_SUCCESS;
cleanup:
dns_nametree_detach(ntp);
return result;
}
static isc_result_t
ta_fromconfig(const cfg_obj_t *key, bool *initialp, const char **namestrp,
unsigned char *digest, dns_rdata_ds_t *ds) {
isc_result_t result;
dns_rdata_dnskey_t keystruct;
dns_rdata_t rdata = DNS_RDATA_INIT;
uint32_t rdata1, rdata2, rdata3;
const char *datastr = NULL, *namestr = NULL;
unsigned char data[4096];
isc_buffer_t databuf;
unsigned char rrdata[4096];
isc_buffer_t rrdatabuf;
isc_region_t r;
dns_fixedname_t fname;
dns_name_t *name = NULL;
isc_buffer_t namebuf;
const char *atstr = NULL;
enum {
INIT_DNSKEY,
STATIC_DNSKEY,
INIT_DS,
STATIC_DS,
TRUSTED
} anchortype;
REQUIRE(namestrp != NULL && *namestrp == NULL);
REQUIRE(ds != NULL);
/* if DNSKEY, flags; if DS, key tag */
rdata1 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata1"));
/* if DNSKEY, protocol; if DS, algorithm */
rdata2 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata2"));
/* if DNSKEY, algorithm; if DS, digest type */
rdata3 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata3"));
namestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
*namestrp = namestr;
name = dns_fixedname_initname(&fname);
isc_buffer_constinit(&namebuf, namestr, strlen(namestr));
isc_buffer_add(&namebuf, strlen(namestr));
CHECK(dns_name_fromtext(name, &namebuf, dns_rootname, 0, NULL));
if (*initialp) {
atstr = cfg_obj_asstring(cfg_tuple_get(key, "anchortype"));
if (strcasecmp(atstr, "static-key") == 0) {
*initialp = false;
anchortype = STATIC_DNSKEY;
} else if (strcasecmp(atstr, "static-ds") == 0) {
*initialp = false;
anchortype = STATIC_DS;
} else if (strcasecmp(atstr, "initial-key") == 0) {
anchortype = INIT_DNSKEY;
} else if (strcasecmp(atstr, "initial-ds") == 0) {
anchortype = INIT_DS;
} else {
cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR,
"key '%s': "
"invalid initialization method '%s'",
namestr, atstr);
result = ISC_R_FAILURE;
goto cleanup;
}
} else {
anchortype = TRUSTED;
}
isc_buffer_init(&databuf, data, sizeof(data));
isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
*ds = (dns_rdata_ds_t){ .common.rdclass = dns_rdataclass_in,
.common.rdtype = dns_rdatatype_ds };
ISC_LINK_INIT(&ds->common, link);
switch (anchortype) {
case INIT_DNSKEY:
case STATIC_DNSKEY:
case TRUSTED:
/*
* This function should never be reached for view
* class other than IN
*/
keystruct.common.rdclass = dns_rdataclass_in;
keystruct.common.rdtype = dns_rdatatype_dnskey;
/*
* The key data in keystruct is not dynamically allocated.
*/
keystruct.mctx = NULL;
ISC_LINK_INIT(&keystruct.common, link);
if (rdata1 > 0xffff) {
CHECKM(ISC_R_RANGE, "key flags");
}
if (rdata1 & DNS_KEYFLAG_REVOKE) {
CHECKM(DST_R_BADKEYTYPE, "key flags revoke bit set");
}
if (rdata2 > 0xff) {
CHECKM(ISC_R_RANGE, "key protocol");
}
if (rdata3 > 0xff) {
CHECKM(ISC_R_RANGE, "key algorithm");
}
keystruct.flags = (uint16_t)rdata1;
keystruct.protocol = (uint8_t)rdata2;
keystruct.algorithm = (uint8_t)rdata3;
if (!dst_algorithm_supported(keystruct.algorithm)) {
CHECK(DST_R_UNSUPPORTEDALG);
}
datastr = cfg_obj_asstring(cfg_tuple_get(key, "data"));
CHECK(isc_base64_decodestring(datastr, &databuf));
isc_buffer_usedregion(&databuf, &r);
keystruct.datalen = r.length;
keystruct.data = r.base;
CHECK(dns_rdata_fromstruct(&rdata, keystruct.common.rdclass,
keystruct.common.rdtype, &keystruct,
&rrdatabuf));
CHECK(dns_ds_fromkeyrdata(name, &rdata, DNS_DSDIGEST_SHA256,
digest, ds));
break;
case INIT_DS:
case STATIC_DS:
if (rdata1 > 0xffff) {
CHECKM(ISC_R_RANGE, "key tag");
}
if (rdata2 > 0xff) {
CHECKM(ISC_R_RANGE, "key algorithm");
}
if (rdata3 > 0xff) {
CHECKM(ISC_R_RANGE, "digest type");
}
ds->key_tag = (uint16_t)rdata1;
ds->algorithm = (uint8_t)rdata2;
ds->digest_type = (uint8_t)rdata3;
datastr = cfg_obj_asstring(cfg_tuple_get(key, "data"));
CHECK(isc_hex_decodestring(datastr, &databuf));
isc_buffer_usedregion(&databuf, &r);
switch (ds->digest_type) {
case DNS_DSDIGEST_SHA1:
if (r.length != ISC_SHA1_DIGESTLENGTH) {
CHECK(ISC_R_UNEXPECTEDEND);
}
break;
case DNS_DSDIGEST_SHA256:
if (r.length != ISC_SHA256_DIGESTLENGTH) {
CHECK(ISC_R_UNEXPECTEDEND);
}
break;
case DNS_DSDIGEST_SHA384:
if (r.length != ISC_SHA384_DIGESTLENGTH) {
CHECK(ISC_R_UNEXPECTEDEND);
}
break;
default:
cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR,
"key '%s': "
"unknown ds digest type %u",
namestr, ds->digest_type);
result = ISC_R_FAILURE;
goto cleanup;
break;
}
ds->length = r.length;
ds->digest = digest;
memmove(ds->digest, r.base, r.length);
break;
default:
UNREACHABLE();
}
return ISC_R_SUCCESS;
cleanup:
return result;
}
static void
sfd_add(const dns_name_t *name, void *arg) {
if (arg != NULL) {
dns_view_sfd_add(arg, name);
}
}
/*%
* Parse 'key' in the context of view configuration 'vconfig'. If successful,
* add the key to 'secroots' if both of the following conditions are true:
*
* - 'keyname_match' is NULL or it matches the owner name of 'key',
* - support for the algorithm used by 'key' is not disabled by 'resolver'
* for the owner name of 'key'.
*
* 'managed' is true for managed keys and false for trusted keys. 'mctx' is
* the memory context to use for allocating memory.
*/
static isc_result_t
process_key(const cfg_obj_t *key, dns_keytable_t *secroots,
const dns_name_t *keyname_match, dns_view_t *view, bool managed) {
dns_fixedname_t fkeyname;
dns_name_t *keyname = NULL;
const char *namestr = NULL;
dns_rdata_ds_t ds;
isc_result_t result;
bool initializing = managed;
unsigned char digest[ISC_MAX_MD_SIZE];
isc_buffer_t b;
result = ta_fromconfig(key, &initializing, &namestr, digest, &ds);
switch (result) {
case ISC_R_SUCCESS:
/*
* Trust anchor was parsed correctly.
*/
isc_buffer_constinit(&b, namestr, strlen(namestr));
isc_buffer_add(&b, strlen(namestr));
keyname = dns_fixedname_initname(&fkeyname);
result = dns_name_fromtext(keyname, &b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
break;
case DST_R_UNSUPPORTEDALG:
case DST_R_BADKEYTYPE:
/*
* Key was parsed correctly, but it cannot be used; this is not
* a fatal error - log a warning about this key being ignored,
* but do not prevent any further ones from being processed.
*/
cfg_obj_log(key, named_g_lctx, ISC_LOG_WARNING,
"ignoring %s for '%s': %s",
initializing ? "initial-key" : "static-key",
namestr, isc_result_totext(result));
return ISC_R_SUCCESS;
case DST_R_NOCRYPTO:
/*
* Crypto support is not available.
*/
cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR,
"ignoring %s for '%s': no crypto support",
initializing ? "initial-key" : "static-key",
namestr);
return result;
default:
/*
* Something unexpected happened; we have no choice but to
* indicate an error so that the configuration loading process
* is interrupted.
*/
cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR,
"configuring %s for '%s': %s",
initializing ? "initial-key" : "static-key",
namestr, isc_result_totext(result));
return ISC_R_FAILURE;
}
/*
* If the caller requested to only load keys for a specific name and
* the owner name of this key does not match the requested name, do not
* load it.
*/
if (keyname_match != NULL && !dns_name_equal(keyname_match, keyname)) {
goto done;
}
/*
* Ensure that 'resolver' allows using the algorithm of this key for
* its owner name. If it does not, do not load the key and log a
* warning, but do not prevent further keys from being processed.
*/
if (!dns_resolver_algorithm_supported(view->resolver, keyname,
ds.algorithm))
{
cfg_obj_log(key, named_g_lctx, ISC_LOG_WARNING,
"ignoring %s for '%s': algorithm is disabled",
initializing ? "initial-key" : "static-key",
namestr);
goto done;
}
/*
* Add the key to 'secroots'. Keys from a "trust-anchors" or
* "managed-keys" statement may be either static or initializing
* keys. If it's not initializing, we don't want to treat it as
* managed, so we use 'initializing' twice here, for both the
* 'managed' and 'initializing' arguments to dns_keytable_add().
*/
result = dns_keytable_add(secroots, initializing, initializing, keyname,
&ds, sfd_add, view);
done:
return result;
}
/*
* Load keys from configuration into key table. If 'keyname' is specified,
* only load keys matching that name. If 'managed' is true, load the key as
* an initializing key.
*/
static isc_result_t
load_view_keys(const cfg_obj_t *keys, dns_view_t *view, bool managed,
const dns_name_t *keyname) {
const cfg_listelt_t *elt, *elt2;
const cfg_obj_t *keylist;
isc_result_t result;
dns_keytable_t *secroots = NULL;
CHECK(dns_view_getsecroots(view, &secroots));
for (elt = cfg_list_first(keys); elt != NULL; elt = cfg_list_next(elt))
{
keylist = cfg_listelt_value(elt);
for (elt2 = cfg_list_first(keylist); elt2 != NULL;
elt2 = cfg_list_next(elt2))
{
CHECK(process_key(cfg_listelt_value(elt2), secroots,
keyname, view, managed));
}
}
cleanup:
if (secroots != NULL) {
dns_keytable_detach(&secroots);
}
if (result == DST_R_NOCRYPTO) {
result = ISC_R_SUCCESS;
}
return result;
}
/*%
* Check whether a key has been successfully loaded.
*/
static bool
keyloaded(dns_view_t *view, const dns_name_t *name) {
isc_result_t result;
dns_keytable_t *secroots = NULL;
dns_keynode_t *keynode = NULL;
result = dns_view_getsecroots(view, &secroots);
if (result != ISC_R_SUCCESS) {
return false;
}
result = dns_keytable_find(secroots, name, &keynode);
if (keynode != NULL) {
dns_keynode_detach(&keynode);
}
if (secroots != NULL) {
dns_keytable_detach(&secroots);
}
return result == ISC_R_SUCCESS;
}
/*%
* Configure DNSSEC keys for a view.
*
* The per-view configuration values and the server-global defaults are read
* from 'vconfig' and 'config'.
*/
static isc_result_t
configure_view_dnsseckeys(dns_view_t *view, const cfg_obj_t *vconfig,
const cfg_obj_t *config, const cfg_obj_t *bindkeys,
bool auto_root) {
isc_result_t result = ISC_R_SUCCESS;
const cfg_obj_t *view_keys = NULL;
const cfg_obj_t *global_keys = NULL;
const cfg_obj_t *view_managed_keys = NULL;
const cfg_obj_t *view_trust_anchors = NULL;
const cfg_obj_t *global_managed_keys = NULL;
const cfg_obj_t *global_trust_anchors = NULL;
const cfg_obj_t *maps[4];
const cfg_obj_t *voptions = NULL;
const cfg_obj_t *options = NULL;
const cfg_obj_t *obj = NULL;
const char *directory;
int i = 0;
/* We don't need trust anchors for the _bind view */
if (strcmp(view->name, "_bind") == 0 &&
view->rdclass == dns_rdataclass_chaos)
{
return ISC_R_SUCCESS;
}
if (vconfig != NULL) {
voptions = cfg_tuple_get(vconfig, "options");
if (voptions != NULL) {
(void)cfg_map_get(voptions, "trusted-keys", &view_keys);
/* managed-keys and trust-anchors are synonyms. */
(void)cfg_map_get(voptions, "managed-keys",
&view_managed_keys);
(void)cfg_map_get(voptions, "trust-anchors",
&view_trust_anchors);
maps[i++] = voptions;
}
}
if (config != NULL) {
(void)cfg_map_get(config, "trusted-keys", &global_keys);
/* managed-keys and trust-anchors are synonyms. */
(void)cfg_map_get(config, "managed-keys", &global_managed_keys);
(void)cfg_map_get(config, "trust-anchors",
&global_trust_anchors);
(void)cfg_map_get(config, "options", &options);
if (options != NULL) {
maps[i++] = options;
}
}
maps[i++] = named_g_defaults;
maps[i] = NULL;
dns_view_initsecroots(view);
dns_view_initntatable(view, named_g_loopmgr);
if (auto_root && view->rdclass == dns_rdataclass_in) {
const cfg_obj_t *builtin_keys = NULL;
/*
* If bind.keys exists and is populated, it overrides
* the trust-anchors clause hard-coded in named_g_config.
*/
if (bindkeys != NULL) {
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"obtaining root key for view %s "
"from '%s'",
view->name, named_g_server->bindkeysfile);
(void)cfg_map_get(bindkeys, "trust-anchors",
&builtin_keys);
if (builtin_keys == NULL) {
isc_log_write(
named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"dnssec-validation auto: "
"WARNING: root zone key "
"not found");
}
}
if (builtin_keys == NULL) {
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"using built-in root key for view %s",
view->name);
(void)cfg_map_get(named_g_config, "trust-anchors",
&builtin_keys);
}
if (builtin_keys != NULL) {
CHECK(load_view_keys(builtin_keys, view, true,
dns_rootname));
}
if (!keyloaded(view, dns_rootname)) {
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"root key not loaded");
result = ISC_R_FAILURE;
goto cleanup;
}
}
if (view->rdclass == dns_rdataclass_in) {
CHECK(load_view_keys(view_keys, view, false, NULL));
CHECK(load_view_keys(view_trust_anchors, view, true, NULL));
CHECK(load_view_keys(view_managed_keys, view, true, NULL));
CHECK(load_view_keys(global_keys, view, false, NULL));
CHECK(load_view_keys(global_trust_anchors, view, true, NULL));
CHECK(load_view_keys(global_managed_keys, view, true, NULL));
}
/*
* Add key zone for managed keys.
*/
obj = NULL;
(void)named_config_get(maps, "managed-keys-directory", &obj);
directory = (obj != NULL ? cfg_obj_asstring(obj) : NULL);
if (directory != NULL) {
result = isc_file_isdirectory(directory);
}
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"invalid managed-keys-directory %s: %s",
directory, isc_result_totext(result));
goto cleanup;
} else if (directory != NULL) {
if (!isc_file_isdirwritable(directory)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"managed-keys-directory '%s' "
"is not writable",
directory);
result = ISC_R_NOPERM;
goto cleanup;
}
}
if (auto_root) {
CHECK(add_keydata_zone(view, directory, named_g_mctx));
}
cleanup:
return result;
}
static isc_result_t
mustbesecure(const cfg_obj_t *mbs, dns_resolver_t *resolver) {
const cfg_listelt_t *element;
const cfg_obj_t *obj;
const char *str;
dns_fixedname_t fixed;
dns_name_t *name;
bool value;
isc_result_t result;
isc_buffer_t b;
name = dns_fixedname_initname(&fixed);
for (element = cfg_list_first(mbs); element != NULL;
element = cfg_list_next(element))
{
obj = cfg_listelt_value(element);
str = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
value = cfg_obj_asboolean(cfg_tuple_get(obj, "value"));
CHECK(dns_resolver_setmustbesecure(resolver, name, value));
}
result = ISC_R_SUCCESS;
cleanup:
return result;
}
/*%
* Get a dispatch appropriate for the resolver of a given view.
*/
static isc_result_t
get_view_querysource_dispatch(const cfg_obj_t **maps, int af,
dns_dispatch_t **dispatchp, bool is_firstview) {
isc_result_t result = ISC_R_FAILURE;
dns_dispatch_t *disp = NULL;
isc_sockaddr_t sa;
const cfg_obj_t *obj = NULL;
switch (af) {
case AF_INET:
result = named_config_get(maps, "query-source", &obj);
INSIST(result == ISC_R_SUCCESS);
break;
case AF_INET6:
result = named_config_get(maps, "query-source-v6", &obj);
INSIST(result == ISC_R_SUCCESS);
break;
default:
UNREACHABLE();
}
if (cfg_obj_isvoid(obj)) {
/*
* We don't want to use this address family, let's
* bail now. The dispatch object for this family will
* be null then not used to run queries.
*/
return ISC_R_SUCCESS;
} else {
/*
* obj _has_ to be sockaddr here, cfg_obj_assockaddr()
* asserts this internally.
*/
sa = *(cfg_obj_assockaddr(obj));
INSIST(isc_sockaddr_pf(&sa) == af);
}
/*
* If we don't support this address family, we're done!
*/
switch (af) {
case AF_INET:
result = isc_net_probeipv4();
break;
case AF_INET6:
result = isc_net_probeipv6();
break;
default:
UNREACHABLE();
}
if (result != ISC_R_SUCCESS) {
return ISC_R_SUCCESS;
}
/*
* Try to find a dispatcher that we can share.
*/
if (isc_sockaddr_getport(&sa) != 0) {
INSIST(obj != NULL);
if (is_firstview) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_INFO,
"using specific query-source port "
"suppresses port randomization and can be "
"insecure.");
}
}
result = dns_dispatch_createudp(named_g_dispatchmgr, &sa, &disp);
if (result != ISC_R_SUCCESS) {
isc_sockaddr_t any;
char buf[ISC_SOCKADDR_FORMATSIZE];
switch (af) {
case AF_INET:
isc_sockaddr_any(&any);
break;
case AF_INET6:
isc_sockaddr_any6(&any);
break;
}
if (isc_sockaddr_equal(&sa, &any)) {
return ISC_R_SUCCESS;
}
isc_sockaddr_format(&sa, buf, sizeof(buf));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"could not get query source dispatcher (%s): %s",
buf, isc_result_totext(result));
return result;
}
*dispatchp = disp;
return ISC_R_SUCCESS;
}
static isc_result_t
configure_order(dns_order_t *order, const cfg_obj_t *ent) {
dns_rdataclass_t rdclass;
dns_rdatatype_t rdtype;
const cfg_obj_t *obj;
dns_fixedname_t fixed;
unsigned int mode = 0;
const char *str;
isc_buffer_t b;
isc_result_t result;
bool addroot;
result = named_config_getclass(cfg_tuple_get(ent, "class"),
dns_rdataclass_any, &rdclass);
if (result != ISC_R_SUCCESS) {
return result;
}
result = named_config_gettype(cfg_tuple_get(ent, "type"),
dns_rdatatype_any, &rdtype);
if (result != ISC_R_SUCCESS) {
return result;
}
obj = cfg_tuple_get(ent, "name");
if (cfg_obj_isstring(obj)) {
str = cfg_obj_asstring(obj);
} else {
str = "*";
}
addroot = (strcmp(str, "*") == 0);
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
dns_fixedname_init(&fixed);
result = dns_name_fromtext(dns_fixedname_name(&fixed), &b, dns_rootname,
0, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
obj = cfg_tuple_get(ent, "ordering");
INSIST(cfg_obj_isstring(obj));
str = cfg_obj_asstring(obj);
if (!strcasecmp(str, "fixed")) {
#if DNS_RDATASET_FIXED
mode = DNS_RDATASETATTR_FIXEDORDER;
#else /* if DNS_RDATASET_FIXED */
mode = DNS_RDATASETATTR_CYCLIC;
#endif /* DNS_RDATASET_FIXED */
} else if (!strcasecmp(str, "random")) {
mode = DNS_RDATASETATTR_RANDOMIZE;
} else if (!strcasecmp(str, "cyclic")) {
mode = DNS_RDATASETATTR_CYCLIC;
} else if (!strcasecmp(str, "none")) {
mode = DNS_RDATASETATTR_NONE;
} else {
UNREACHABLE();
}
/*
* "*" should match everything including the root (BIND 8 compat).
* As dns_name_matcheswildcard(".", "*.") returns FALSE add a
* explicit entry for "." when the name is "*".
*/
if (addroot) {
result = dns_order_add(order, dns_rootname, rdtype, rdclass,
mode);
if (result != ISC_R_SUCCESS) {
return result;
}
}
return dns_order_add(order, dns_fixedname_name(&fixed), rdtype, rdclass,
mode);
}
static isc_result_t
configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) {
isc_netaddr_t na;
dns_peer_t *peer;
const cfg_obj_t *obj;
const char *str;
isc_result_t result;
unsigned int prefixlen;
cfg_obj_asnetprefix(cfg_map_getname(cpeer), &na, &prefixlen);
peer = NULL;
result = dns_peer_newprefix(mctx, &na, prefixlen, &peer);
if (result != ISC_R_SUCCESS) {
return result;
}
obj = NULL;
(void)cfg_map_get(cpeer, "bogus", &obj);
if (obj != NULL) {
CHECK(dns_peer_setbogus(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "provide-ixfr", &obj);
if (obj != NULL) {
CHECK(dns_peer_setprovideixfr(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "request-expire", &obj);
if (obj != NULL) {
CHECK(dns_peer_setrequestexpire(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "request-ixfr", &obj);
if (obj != NULL) {
CHECK(dns_peer_setrequestixfr(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "request-nsid", &obj);
if (obj != NULL) {
CHECK(dns_peer_setrequestnsid(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "send-cookie", &obj);
if (obj != NULL) {
CHECK(dns_peer_setsendcookie(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "require-cookie", &obj);
if (obj != NULL) {
CHECK(dns_peer_setrequirecookie(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "edns", &obj);
if (obj != NULL) {
CHECK(dns_peer_setsupportedns(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "edns-udp-size", &obj);
if (obj != NULL) {
uint32_t udpsize = cfg_obj_asuint32(obj);
if (udpsize < 512U) {
udpsize = 512U;
}
if (udpsize > 4096U) {
udpsize = 4096U;
}
CHECK(dns_peer_setudpsize(peer, (uint16_t)udpsize));
}
obj = NULL;
(void)cfg_map_get(cpeer, "edns-version", &obj);
if (obj != NULL) {
uint32_t ednsversion = cfg_obj_asuint32(obj);
if (ednsversion > 255U) {
ednsversion = 255U;
}
CHECK(dns_peer_setednsversion(peer, (uint8_t)ednsversion));
}
obj = NULL;
(void)cfg_map_get(cpeer, "max-udp-size", &obj);
if (obj != NULL) {
uint32_t udpsize = cfg_obj_asuint32(obj);
if (udpsize < 512U) {
udpsize = 512U;
}
if (udpsize > 4096U) {
udpsize = 4096U;
}
CHECK(dns_peer_setmaxudp(peer, (uint16_t)udpsize));
}
obj = NULL;
(void)cfg_map_get(cpeer, "padding", &obj);
if (obj != NULL) {
uint32_t padding = cfg_obj_asuint32(obj);
if (padding > 512U) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"server padding value cannot "
"exceed 512: lowering");
padding = 512U;
}
CHECK(dns_peer_setpadding(peer, (uint16_t)padding));
}
obj = NULL;
(void)cfg_map_get(cpeer, "tcp-only", &obj);
if (obj != NULL) {
CHECK(dns_peer_setforcetcp(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "tcp-keepalive", &obj);
if (obj != NULL) {
CHECK(dns_peer_settcpkeepalive(peer, cfg_obj_asboolean(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "transfers", &obj);
if (obj != NULL) {
CHECK(dns_peer_settransfers(peer, cfg_obj_asuint32(obj)));
}
obj = NULL;
(void)cfg_map_get(cpeer, "transfer-format", &obj);
if (obj != NULL) {
str = cfg_obj_asstring(obj);
if (strcasecmp(str, "many-answers") == 0) {
CHECK(dns_peer_settransferformat(peer,
dns_many_answers));
} else if (strcasecmp(str, "one-answer") == 0) {
CHECK(dns_peer_settransferformat(peer, dns_one_answer));
} else {
UNREACHABLE();
}
}
obj = NULL;
(void)cfg_map_get(cpeer, "keys", &obj);
if (obj != NULL) {
result = dns_peer_setkeybycharp(peer, cfg_obj_asstring(obj));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
obj = NULL;
if (na.family == AF_INET) {
(void)cfg_map_get(cpeer, "transfer-source", &obj);
} else {
(void)cfg_map_get(cpeer, "transfer-source-v6", &obj);
}
if (obj != NULL) {
result = dns_peer_settransfersource(peer,
cfg_obj_assockaddr(obj));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
obj = NULL;
if (na.family == AF_INET) {
(void)cfg_map_get(cpeer, "notify-source", &obj);
} else {
(void)cfg_map_get(cpeer, "notify-source-v6", &obj);
}
if (obj != NULL) {
result = dns_peer_setnotifysource(peer,
cfg_obj_assockaddr(obj));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
obj = NULL;
if (na.family == AF_INET) {
(void)cfg_map_get(cpeer, "query-source", &obj);
} else {
(void)cfg_map_get(cpeer, "query-source-v6", &obj);
}
if (obj != NULL) {
INSIST(cfg_obj_issockaddr(obj));
result = dns_peer_setquerysource(peer, cfg_obj_assockaddr(obj));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
*peerp = peer;
return ISC_R_SUCCESS;
cleanup:
dns_peer_detach(&peer);
return result;
}
static isc_result_t
configure_dyndb(const cfg_obj_t *dyndb, isc_mem_t *mctx,
const dns_dyndbctx_t *dctx) {
isc_result_t result = ISC_R_SUCCESS;
const cfg_obj_t *obj;
const char *name, *library;
/* Get the name of the dyndb instance and the library path . */
name = cfg_obj_asstring(cfg_tuple_get(dyndb, "name"));
library = cfg_obj_asstring(cfg_tuple_get(dyndb, "library"));
obj = cfg_tuple_get(dyndb, "parameters");
if (obj != NULL) {
result = dns_dyndb_load(library, name, cfg_obj_asstring(obj),
cfg_obj_file(obj), cfg_obj_line(obj),
mctx, dctx);
}
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"dynamic database '%s' configuration failed: %s",
name, isc_result_totext(result));
}
return result;
}
static isc_result_t
disable_algorithms(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
isc_result_t result;
const cfg_obj_t *algorithms;
const cfg_listelt_t *element;
const char *str;
dns_fixedname_t fixed;
dns_name_t *name;
isc_buffer_t b;
name = dns_fixedname_initname(&fixed);
str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
algorithms = cfg_tuple_get(disabled, "algorithms");
for (element = cfg_list_first(algorithms); element != NULL;
element = cfg_list_next(element))
{
isc_textregion_t r;
dns_secalg_t alg;
r.base = UNCONST(cfg_obj_asstring(cfg_listelt_value(element)));
r.length = strlen(r.base);
result = dns_secalg_fromtext(&alg, &r);
if (result != ISC_R_SUCCESS) {
uint8_t ui;
result = isc_parse_uint8(&ui, r.base, 10);
alg = ui;
}
if (result != ISC_R_SUCCESS) {
cfg_obj_log(cfg_listelt_value(element), named_g_lctx,
ISC_LOG_ERROR, "invalid algorithm");
CHECK(result);
}
CHECK(dns_resolver_disable_algorithm(resolver, name, alg));
}
cleanup:
return result;
}
static isc_result_t
disable_ds_digests(const cfg_obj_t *disabled, dns_resolver_t *resolver) {
isc_result_t result;
const cfg_obj_t *digests;
const cfg_listelt_t *element;
const char *str;
dns_fixedname_t fixed;
dns_name_t *name;
isc_buffer_t b;
name = dns_fixedname_initname(&fixed);
str = cfg_obj_asstring(cfg_tuple_get(disabled, "name"));
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
digests = cfg_tuple_get(disabled, "digests");
for (element = cfg_list_first(digests); element != NULL;
element = cfg_list_next(element))
{
isc_textregion_t r;
dns_dsdigest_t digest;
r.base = UNCONST(cfg_obj_asstring(cfg_listelt_value(element)));
r.length = strlen(r.base);
/* disable_ds_digests handles numeric values. */
result = dns_dsdigest_fromtext(&digest, &r);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(cfg_listelt_value(element), named_g_lctx,
ISC_LOG_ERROR, "invalid algorithm");
CHECK(result);
}
CHECK(dns_resolver_disable_ds_digest(resolver, name, digest));
}
cleanup:
return result;
}
static bool
on_disable_list(const cfg_obj_t *disablelist, dns_name_t *zonename) {
const cfg_listelt_t *element;
dns_fixedname_t fixed;
dns_name_t *name;
isc_result_t result;
const cfg_obj_t *value;
const char *str;
isc_buffer_t b;
name = dns_fixedname_initname(&fixed);
for (element = cfg_list_first(disablelist); element != NULL;
element = cfg_list_next(element))
{
value = cfg_listelt_value(element);
str = cfg_obj_asstring(value);
isc_buffer_constinit(&b, str, strlen(str));
isc_buffer_add(&b, strlen(str));
result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
if (dns_name_equal(name, zonename)) {
return true;
}
}
return false;
}
static isc_result_t
check_dbtype(dns_zone_t *zone, unsigned int dbtypec, const char **dbargv,
isc_mem_t *mctx) {
char **argv = NULL;
unsigned int i;
isc_result_t result = ISC_R_SUCCESS;
CHECK(dns_zone_getdbtype(zone, &argv, mctx));
/*
* Check that all the arguments match.
*/
for (i = 0; i < dbtypec; i++) {
if (argv[i] == NULL || strcmp(argv[i], dbargv[i]) != 0) {
CHECK(ISC_R_FAILURE);
}
}
/*
* Check that there are not extra arguments.
*/
if (i == dbtypec && argv[i] != NULL) {
result = ISC_R_FAILURE;
}
cleanup:
isc_mem_free(mctx, argv);
return result;
}
static void
setquerystats(dns_zone_t *zone, isc_mem_t *mctx, dns_zonestat_level_t level) {
isc_stats_t *zoneqrystats;
dns_zone_setstatlevel(zone, level);
zoneqrystats = NULL;
if (level == dns_zonestat_full) {
isc_stats_create(mctx, &zoneqrystats, ns_statscounter_max);
}
dns_zone_setrequeststats(zone, zoneqrystats);
if (zoneqrystats != NULL) {
isc_stats_detach(&zoneqrystats);
}
}
static named_cache_t *
cachelist_find(named_cachelist_t *cachelist, const char *cachename,
dns_rdataclass_t rdclass) {
for (named_cache_t *nsc = ISC_LIST_HEAD(*cachelist); nsc != NULL;
nsc = ISC_LIST_NEXT(nsc, link))
{
if (nsc->rdclass == rdclass &&
strcmp(dns_cache_getname(nsc->cache), cachename) == 0)
{
return nsc;
}
}
return NULL;
}
static bool
cache_reusable(dns_view_t *originview, dns_view_t *view,
bool new_zero_no_soattl) {
if (originview->rdclass != view->rdclass ||
originview->checknames != view->checknames ||
originview->acceptexpired != view->acceptexpired ||
originview->enablevalidation != view->enablevalidation ||
originview->maxcachettl != view->maxcachettl ||
originview->maxncachettl != view->maxncachettl ||
originview->resolver == NULL ||
dns_resolver_getzeronosoattl(originview->resolver) !=
new_zero_no_soattl)
{
return false;
}
return true;
}
static bool
cache_sharable(dns_view_t *originview, dns_view_t *view,
bool new_zero_no_soattl, uint64_t new_max_cache_size,
uint32_t new_stale_ttl, uint32_t new_stale_refresh_time) {
/*
* If the cache cannot even reused for the same view, it cannot be
* shared with other views.
*/
if (!cache_reusable(originview, view, new_zero_no_soattl)) {
return false;
}
/*
* Check other cache related parameters that must be consistent among
* the sharing views.
*/
if (dns_cache_getservestalettl(originview->cache) != new_stale_ttl ||
dns_cache_getservestalerefresh(originview->cache) !=
new_stale_refresh_time ||
dns_cache_getcachesize(originview->cache) != new_max_cache_size)
{
return false;
}
return true;
}
/*
* Callback from DLZ configure when the driver sets up a writeable zone
*/
static isc_result_t
dlzconfigure_callback(dns_view_t *view, dns_dlzdb_t *dlzdb, dns_zone_t *zone) {
dns_name_t *origin = dns_zone_getorigin(zone);
dns_rdataclass_t zclass = view->rdclass;
isc_result_t result;
result = dns_zonemgr_managezone(named_g_server->zonemgr, zone);
if (result != ISC_R_SUCCESS) {
return result;
}
dns_zone_setstats(zone, named_g_server->zonestats);
return named_zone_configure_writeable_dlz(dlzdb, zone, zclass, origin);
}
static isc_result_t
dns64_reverse(dns_view_t *view, isc_mem_t *mctx, isc_netaddr_t *na,
unsigned int prefixlen, const char *server, const char *contact) {
char reverse[48 + sizeof("ip6.arpa.")] = { 0 };
char buf[sizeof("x.x.")];
const char *dns64_dbtype[4] = { "_dns64", "dns64", ".", "." };
const char *sep = ": view ";
const char *viewname = view->name;
const unsigned char *s6;
dns_fixedname_t fixed;
dns_name_t *name;
dns_zone_t *zone = NULL;
int dns64_dbtypec = 4;
isc_buffer_t b;
isc_result_t result;
REQUIRE(prefixlen == 32 || prefixlen == 40 || prefixlen == 48 ||
prefixlen == 56 || prefixlen == 64 || prefixlen == 96);
if (!strcmp(viewname, "_default")) {
sep = "";
viewname = "";
}
/*
* Construct the reverse name of the zone.
*/
s6 = na->type.in6.s6_addr;
while (prefixlen > 0) {
prefixlen -= 8;
snprintf(buf, sizeof(buf), "%x.%x.", s6[prefixlen / 8] & 0xf,
(s6[prefixlen / 8] >> 4) & 0xf);
strlcat(reverse, buf, sizeof(reverse));
}
strlcat(reverse, "ip6.arpa.", sizeof(reverse));
/*
* Create the actual zone.
*/
if (server != NULL) {
dns64_dbtype[2] = server;
}
if (contact != NULL) {
dns64_dbtype[3] = contact;
}
name = dns_fixedname_initname(&fixed);
isc_buffer_constinit(&b, reverse, strlen(reverse));
isc_buffer_add(&b, strlen(reverse));
CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
dns_zone_create(&zone, mctx, 0);
CHECK(dns_zone_setorigin(zone, name));
dns_zone_setview(zone, view);
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
dns_zone_setclass(zone, view->rdclass);
dns_zone_settype(zone, dns_zone_primary);
dns_zone_setstats(zone, named_g_server->zonestats);
dns_zone_setdbtype(zone, dns64_dbtypec, dns64_dbtype);
if (view->queryacl != NULL) {
dns_zone_setqueryacl(zone, view->queryacl);
}
if (view->queryonacl != NULL) {
dns_zone_setqueryonacl(zone, view->queryonacl);
}
dns_zone_setdialup(zone, dns_dialuptype_no);
dns_zone_setcheckdstype(zone, dns_checkdstype_no);
dns_zone_setnotifytype(zone, dns_notifytype_no);
dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true);
setquerystats(zone, mctx, dns_zonestat_none);
CHECK(dns_view_addzone(view, zone));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dns64 reverse zone%s%s: %s", sep, viewname, reverse);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
#ifdef USE_DNSRPS
typedef struct conf_dnsrps_ctx conf_dnsrps_ctx_t;
struct conf_dnsrps_ctx {
isc_result_t result;
char *cstr;
size_t cstr_size;
isc_mem_t *mctx;
};
/*
* Add to the DNSRPS configuration string.
*/
static bool
conf_dnsrps_sadd(conf_dnsrps_ctx_t *ctx, const char *p, ...) {
size_t new_len, cur_len, new_cstr_size;
char *new_cstr;
va_list args;
if (ctx->cstr == NULL) {
ctx->cstr = isc_mem_get(ctx->mctx, 256);
ctx->cstr[0] = '\0';
ctx->cstr_size = 256;
}
cur_len = strlen(ctx->cstr);
va_start(args, p);
new_len = vsnprintf(ctx->cstr + cur_len, ctx->cstr_size - cur_len, p,
args) +
1;
va_end(args);
if (cur_len + new_len <= ctx->cstr_size) {
return true;
}
new_cstr_size = ((cur_len + new_len) / 256 + 1) * 256;
new_cstr = isc_mem_get(ctx->mctx, new_cstr_size);
memmove(new_cstr, ctx->cstr, cur_len);
isc_mem_put(ctx->mctx, ctx->cstr, ctx->cstr_size);
ctx->cstr_size = new_cstr_size;
ctx->cstr = new_cstr;
/* cannot use args twice after a single va_start()on some systems */
va_start(args, p);
vsnprintf(ctx->cstr + cur_len, ctx->cstr_size - cur_len, p, args);
va_end(args);
return true;
}
/*
* Get a DNSRPS configuration value using the global and view options
* for the default. Return false upon failure.
*/
static bool
conf_dnsrps_get(const cfg_obj_t **sub_obj, const cfg_obj_t **maps,
const cfg_obj_t *obj, const char *name,
conf_dnsrps_ctx_t *ctx) {
if (ctx != NULL && ctx->result != ISC_R_SUCCESS) {
*sub_obj = NULL;
return false;
}
*sub_obj = cfg_tuple_get(obj, name);
if (cfg_obj_isvoid(*sub_obj)) {
*sub_obj = NULL;
if (maps != NULL &&
ISC_R_SUCCESS != named_config_get(maps, name, sub_obj))
{
*sub_obj = NULL;
}
}
return true;
}
/*
* Handle a DNSRPS boolean configuration value with the global and view
* options providing the default.
*/
static void
conf_dnsrps_yes_no(const cfg_obj_t *obj, const char *name,
conf_dnsrps_ctx_t *ctx) {
const cfg_obj_t *sub_obj;
if (!conf_dnsrps_get(&sub_obj, NULL, obj, name, ctx)) {
return;
}
if (sub_obj == NULL) {
return;
}
if (ctx == NULL) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"\"%s\" without \"dnsrps-enable yes\"", name);
return;
}
conf_dnsrps_sadd(ctx, " %s %s", name,
cfg_obj_asboolean(sub_obj) ? "yes" : "no");
}
static void
conf_dnsrps_num(const cfg_obj_t *obj, const char *name,
conf_dnsrps_ctx_t *ctx) {
const cfg_obj_t *sub_obj;
if (!conf_dnsrps_get(&sub_obj, NULL, obj, name, ctx)) {
return;
}
if (sub_obj == NULL) {
return;
}
if (ctx == NULL) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"\"%s\" without \"dnsrps-enable yes\"", name);
return;
}
if (cfg_obj_isduration(sub_obj)) {
conf_dnsrps_sadd(ctx, " %s %d", name,
cfg_obj_asduration(sub_obj));
} else {
conf_dnsrps_sadd(ctx, " %s %d", name,
cfg_obj_asuint32(sub_obj));
}
}
/*
* Convert the parsed RPZ configuration statement to a string for
* dns_rpz_new_zones().
*/
static isc_result_t
conf_dnsrps(dns_view_t *view, const cfg_obj_t **maps, bool nsip_enabled,
bool nsdname_enabled, dns_rpz_zbits_t *nsip_on,
dns_rpz_zbits_t *nsdname_on, char **rps_cstr, size_t *rps_cstr_size,
const cfg_obj_t *rpz_obj, const cfg_listelt_t *zone_element) {
conf_dnsrps_ctx_t ctx;
const cfg_obj_t *zone_obj, *obj;
dns_rpz_num_t rpz_num;
bool on;
const char *s;
memset(&ctx, 0, sizeof(ctx));
ctx.result = ISC_R_SUCCESS;
ctx.mctx = view->mctx;
for (rpz_num = 0; zone_element != NULL && ctx.result == ISC_R_SUCCESS;
++rpz_num)
{
zone_obj = cfg_listelt_value(zone_element);
s = cfg_obj_asstring(cfg_tuple_get(zone_obj, "zone name"));
conf_dnsrps_sadd(&ctx, "zone \"%s\"", s);
obj = cfg_tuple_get(zone_obj, "policy");
if (!cfg_obj_isvoid(obj)) {
s = cfg_obj_asstring(cfg_tuple_get(obj, "policy name"));
conf_dnsrps_sadd(&ctx, " policy %s", s);
if (strcasecmp(s, "cname") == 0) {
s = cfg_obj_asstring(
cfg_tuple_get(obj, "cname"));
conf_dnsrps_sadd(&ctx, " %s", s);
}
}
conf_dnsrps_yes_no(zone_obj, "recursive-only", &ctx);
conf_dnsrps_yes_no(zone_obj, "log", &ctx);
conf_dnsrps_num(zone_obj, "max-policy-ttl", &ctx);
obj = cfg_tuple_get(rpz_obj, "nsip-enable");
if (!cfg_obj_isvoid(obj)) {
if (cfg_obj_asboolean(obj)) {
*nsip_on |= DNS_RPZ_ZBIT(rpz_num);
} else {
*nsip_on &= ~DNS_RPZ_ZBIT(rpz_num);
}
}
on = ((*nsip_on & DNS_RPZ_ZBIT(rpz_num)) != 0);
if (nsip_enabled != on) {
conf_dnsrps_sadd(&ctx, on ? " nsip-enable yes "
: " nsip-enable no ");
}
obj = cfg_tuple_get(rpz_obj, "nsdname-enable");
if (!cfg_obj_isvoid(obj)) {
if (cfg_obj_asboolean(obj)) {
*nsdname_on |= DNS_RPZ_ZBIT(rpz_num);
} else {
*nsdname_on &= ~DNS_RPZ_ZBIT(rpz_num);
}
}
on = ((*nsdname_on & DNS_RPZ_ZBIT(rpz_num)) != 0);
if (nsdname_enabled != on) {
conf_dnsrps_sadd(&ctx, on ? " nsdname-enable yes "
: " nsdname-enable no ");
}
conf_dnsrps_sadd(&ctx, ";\n");
zone_element = cfg_list_next(zone_element);
}
conf_dnsrps_yes_no(rpz_obj, "recursive-only", &ctx);
conf_dnsrps_num(rpz_obj, "max-policy-ttl", &ctx);
conf_dnsrps_num(rpz_obj, "min-ns-dots", &ctx);
conf_dnsrps_yes_no(rpz_obj, "qname-wait-recurse", &ctx);
conf_dnsrps_yes_no(rpz_obj, "break-dnssec", &ctx);
if (!nsip_enabled) {
conf_dnsrps_sadd(&ctx, " nsip-enable no ");
}
if (!nsdname_enabled) {
conf_dnsrps_sadd(&ctx, " nsdname-enable no ");
}
/*
* Get the general dnsrpzd parameters from the response-policy
* statement in the view and the general options.
*/
if (conf_dnsrps_get(&obj, maps, rpz_obj, "dnsrps-options", &ctx) &&
obj != NULL)
{
conf_dnsrps_sadd(&ctx, " %s\n", cfg_obj_asstring(obj));
}
if (ctx.result == ISC_R_SUCCESS) {
*rps_cstr = ctx.cstr;
*rps_cstr_size = ctx.cstr_size;
} else {
if (ctx.cstr != NULL) {
isc_mem_put(ctx.mctx, ctx.cstr, ctx.cstr_size);
}
*rps_cstr = NULL;
*rps_cstr_size = 0;
}
return ctx.result;
}
#endif /* ifdef USE_DNSRPS */
static isc_result_t
configure_rpz_name(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name,
const char *str, const char *msg) {
isc_result_t result;
result = dns_name_fromstring(name, str, dns_rootname, DNS_NAME_DOWNCASE,
view->mctx);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"invalid %s '%s'", msg, str);
}
return result;
}
static isc_result_t
configure_rpz_name2(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name,
const char *str, const dns_name_t *origin) {
isc_result_t result;
result = dns_name_fromstring(name, str, origin, DNS_NAME_DOWNCASE,
view->mctx);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"invalid zone '%s'", str);
}
return result;
}
static isc_result_t
configure_rpz_zone(dns_view_t *view, const cfg_listelt_t *element,
bool recursive_only_default, bool add_soa_default,
dns_ttl_t ttl_default, uint32_t minupdateinterval_default,
const dns_rpz_zone_t *old, bool *old_rpz_okp) {
const cfg_obj_t *rpz_obj, *obj;
const char *str;
dns_rpz_zone_t *zone = NULL;
isc_result_t result;
dns_rpz_num_t rpz_num;
REQUIRE(old != NULL || !*old_rpz_okp);
rpz_obj = cfg_listelt_value(element);
if (view->rpzs->p.num_zones >= DNS_RPZ_MAX_ZONES) {
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"limit of %d response policy zones exceeded",
DNS_RPZ_MAX_ZONES);
return ISC_R_FAILURE;
}
result = dns_rpz_new_zone(view->rpzs, &zone);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"Error creating new RPZ zone : %s",
isc_result_totext(result));
return result;
}
obj = cfg_tuple_get(rpz_obj, "recursive-only");
if (cfg_obj_isvoid(obj) ? recursive_only_default
: cfg_obj_asboolean(obj))
{
view->rpzs->p.no_rd_ok &= ~DNS_RPZ_ZBIT(zone->num);
} else {
view->rpzs->p.no_rd_ok |= DNS_RPZ_ZBIT(zone->num);
}
obj = cfg_tuple_get(rpz_obj, "log");
if (!cfg_obj_isvoid(obj) && !cfg_obj_asboolean(obj)) {
view->rpzs->p.no_log |= DNS_RPZ_ZBIT(zone->num);
} else {
view->rpzs->p.no_log &= ~DNS_RPZ_ZBIT(zone->num);
}
obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
if (cfg_obj_isduration(obj)) {
zone->max_policy_ttl = cfg_obj_asduration(obj);
} else {
zone->max_policy_ttl = ttl_default;
}
if (*old_rpz_okp && zone->max_policy_ttl != old->max_policy_ttl) {
*old_rpz_okp = false;
}
obj = cfg_tuple_get(rpz_obj, "min-update-interval");
if (cfg_obj_isduration(obj)) {
zone->min_update_interval = cfg_obj_asduration(obj);
} else {
zone->min_update_interval = minupdateinterval_default;
}
if (*old_rpz_okp &&
zone->min_update_interval != old->min_update_interval)
{
*old_rpz_okp = false;
}
str = cfg_obj_asstring(cfg_tuple_get(rpz_obj, "zone name"));
result = configure_rpz_name(view, rpz_obj, &zone->origin, str, "zone");
if (result != ISC_R_SUCCESS) {
return result;
}
if (dns_name_equal(&zone->origin, dns_rootname)) {
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"invalid zone name '%s'", str);
return DNS_R_EMPTYLABEL;
}
if (!view->rpzs->p.dnsrps_enabled) {
for (rpz_num = 0; rpz_num < view->rpzs->p.num_zones - 1;
++rpz_num)
{
if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin,
&zone->origin))
{
cfg_obj_log(rpz_obj, named_g_lctx,
DNS_RPZ_ERROR_LEVEL,
"duplicate '%s'", str);
result = DNS_R_DUPLICATE;
return result;
}
}
}
if (*old_rpz_okp && !dns_name_equal(&old->origin, &zone->origin)) {
*old_rpz_okp = false;
}
result = configure_rpz_name2(view, rpz_obj, &zone->client_ip,
DNS_RPZ_CLIENT_IP_ZONE, &zone->origin);
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name2(view, rpz_obj, &zone->ip, DNS_RPZ_IP_ZONE,
&zone->origin);
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name2(view, rpz_obj, &zone->nsdname,
DNS_RPZ_NSDNAME_ZONE, &zone->origin);
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name2(view, rpz_obj, &zone->nsip,
DNS_RPZ_NSIP_ZONE, &zone->origin);
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name(view, rpz_obj, &zone->passthru,
DNS_RPZ_PASSTHRU_NAME, "name");
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name(view, rpz_obj, &zone->drop,
DNS_RPZ_DROP_NAME, "name");
if (result != ISC_R_SUCCESS) {
return result;
}
result = configure_rpz_name(view, rpz_obj, &zone->tcp_only,
DNS_RPZ_TCP_ONLY_NAME, "name");
if (result != ISC_R_SUCCESS) {
return result;
}
obj = cfg_tuple_get(rpz_obj, "policy");
if (cfg_obj_isvoid(obj)) {
zone->policy = DNS_RPZ_POLICY_GIVEN;
} else {
str = cfg_obj_asstring(cfg_tuple_get(obj, "policy name"));
zone->policy = dns_rpz_str2policy(str);
INSIST(zone->policy != DNS_RPZ_POLICY_ERROR);
if (zone->policy == DNS_RPZ_POLICY_CNAME) {
str = cfg_obj_asstring(cfg_tuple_get(obj, "cname"));
result = configure_rpz_name(view, rpz_obj, &zone->cname,
str, "cname");
if (result != ISC_R_SUCCESS) {
return result;
}
}
}
if (*old_rpz_okp && (zone->policy != old->policy ||
!dns_name_equal(&old->cname, &zone->cname)))
{
*old_rpz_okp = false;
}
obj = cfg_tuple_get(rpz_obj, "ede");
if (!cfg_obj_isstring(obj)) {
zone->ede = 0;
} else {
str = cfg_obj_asstring(obj);
zone->ede = dns_rpz_str2ede(str);
INSIST(zone->ede != UINT16_MAX);
}
if (*old_rpz_okp && zone->ede != old->ede) {
*old_rpz_okp = false;
}
obj = cfg_tuple_get(rpz_obj, "add-soa");
if (cfg_obj_isvoid(obj)) {
zone->addsoa = add_soa_default;
} else {
zone->addsoa = cfg_obj_asboolean(obj);
}
if (*old_rpz_okp && zone->addsoa != old->addsoa) {
*old_rpz_okp = false;
}
return ISC_R_SUCCESS;
}
static isc_result_t
configure_rpz(dns_view_t *view, dns_view_t *pview, const cfg_obj_t **maps,
const cfg_obj_t *rpz_obj, bool *old_rpz_okp) {
bool dnsrps_enabled;
const cfg_listelt_t *zone_element;
char *rps_cstr;
size_t rps_cstr_size;
const cfg_obj_t *sub_obj;
bool recursive_only_default, add_soa_default;
bool nsip_enabled, nsdname_enabled;
dns_rpz_zbits_t nsip_on, nsdname_on;
dns_ttl_t ttl_default;
uint32_t minupdateinterval_default;
dns_rpz_zones_t *zones;
const dns_rpz_zones_t *old;
bool pview_must_detach = false;
const dns_rpz_zone_t *old_zone;
isc_result_t result;
int i;
*old_rpz_okp = false;
zone_element = cfg_list_first(cfg_tuple_get(rpz_obj, "zone list"));
if (zone_element == NULL) {
return ISC_R_SUCCESS;
}
nsip_enabled = true;
sub_obj = cfg_tuple_get(rpz_obj, "nsip-enable");
if (!cfg_obj_isvoid(sub_obj)) {
nsip_enabled = cfg_obj_asboolean(sub_obj);
}
nsip_on = nsip_enabled ? DNS_RPZ_ALL_ZBITS : 0;
nsdname_enabled = true;
sub_obj = cfg_tuple_get(rpz_obj, "nsdname-enable");
if (!cfg_obj_isvoid(sub_obj)) {
nsdname_enabled = cfg_obj_asboolean(sub_obj);
}
nsdname_on = nsdname_enabled ? DNS_RPZ_ALL_ZBITS : 0;
/*
* "dnsrps-enable yes|no" can be either a global or response-policy
* clause.
*/
dnsrps_enabled = false;
rps_cstr = NULL;
rps_cstr_size = 0;
sub_obj = NULL;
(void)named_config_get(maps, "dnsrps-enable", &sub_obj);
if (sub_obj != NULL) {
dnsrps_enabled = cfg_obj_asboolean(sub_obj);
}
sub_obj = cfg_tuple_get(rpz_obj, "dnsrps-enable");
if (!cfg_obj_isvoid(sub_obj)) {
dnsrps_enabled = cfg_obj_asboolean(sub_obj);
}
#ifndef USE_DNSRPS
if (dnsrps_enabled) {
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"\"dnsrps-enable yes\" but"
" without `./configure --enable-dnsrps`");
return ISC_R_FAILURE;
}
#else /* ifndef USE_DNSRPS */
if (dnsrps_enabled) {
if (librpz == NULL) {
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL,
"\"dnsrps-enable yes\" but %s",
librpz_lib_open_emsg.c);
return ISC_R_FAILURE;
}
/*
* Generate the DNS Response Policy Service
* configuration string.
*/
result = conf_dnsrps(view, maps, nsip_enabled, nsdname_enabled,
&nsip_on, &nsdname_on, &rps_cstr,
&rps_cstr_size, rpz_obj, zone_element);
if (result != ISC_R_SUCCESS) {
return result;
}
}
#endif /* ifndef USE_DNSRPS */
result = dns_rpz_new_zones(view, named_g_loopmgr, rps_cstr,
rps_cstr_size, &view->rpzs);
if (result != ISC_R_SUCCESS) {
return result;
}
zones = view->rpzs;
zones->p.nsip_on = nsip_on;
zones->p.nsdname_on = nsdname_on;
sub_obj = cfg_tuple_get(rpz_obj, "recursive-only");
if (!cfg_obj_isvoid(sub_obj) && !cfg_obj_asboolean(sub_obj)) {
recursive_only_default = false;
} else {
recursive_only_default = true;
}
sub_obj = cfg_tuple_get(rpz_obj, "add-soa");
if (!cfg_obj_isvoid(sub_obj) && !cfg_obj_asboolean(sub_obj)) {
add_soa_default = false;
} else {
add_soa_default = true;
}
sub_obj = cfg_tuple_get(rpz_obj, "break-dnssec");
if (!cfg_obj_isvoid(sub_obj) && cfg_obj_asboolean(sub_obj)) {
zones->p.break_dnssec = true;
} else {
zones->p.break_dnssec = false;
}
sub_obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
if (cfg_obj_isduration(sub_obj)) {
ttl_default = cfg_obj_asduration(sub_obj);
} else {
ttl_default = DNS_RPZ_MAX_TTL_DEFAULT;
}
sub_obj = cfg_tuple_get(rpz_obj, "min-update-interval");
if (cfg_obj_isduration(sub_obj)) {
minupdateinterval_default = cfg_obj_asduration(sub_obj);
} else {
minupdateinterval_default = DNS_RPZ_MINUPDATEINTERVAL_DEFAULT;
}
sub_obj = cfg_tuple_get(rpz_obj, "min-ns-dots");
if (cfg_obj_isuint32(sub_obj)) {
zones->p.min_ns_labels = cfg_obj_asuint32(sub_obj) + 1;
} else {
zones->p.min_ns_labels = 2;
}
sub_obj = cfg_tuple_get(rpz_obj, "qname-wait-recurse");
if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj)) {
zones->p.qname_wait_recurse = true;
} else {
zones->p.qname_wait_recurse = false;
}
sub_obj = cfg_tuple_get(rpz_obj, "nsdname-wait-recurse");
if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj)) {
zones->p.nsdname_wait_recurse = true;
} else {
zones->p.nsdname_wait_recurse = false;
}
sub_obj = cfg_tuple_get(rpz_obj, "nsip-wait-recurse");
if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj)) {
zones->p.nsip_wait_recurse = true;
} else {
zones->p.nsip_wait_recurse = false;
}
if (pview != NULL) {
old = pview->rpzs;
} else {
result = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass, &pview);
if (result == ISC_R_SUCCESS) {
pview_must_detach = true;
old = pview->rpzs;
} else {
old = NULL;
}
}
if (old == NULL) {
*old_rpz_okp = false;
} else {
*old_rpz_okp = true;
}
for (i = 0; zone_element != NULL;
++i, zone_element = cfg_list_next(zone_element))
{
INSIST(!*old_rpz_okp || old != NULL);
if (*old_rpz_okp && i < old->p.num_zones) {
old_zone = old->zones[i];
} else {
*old_rpz_okp = false;
old_zone = NULL;
}
result = configure_rpz_zone(
view, zone_element, recursive_only_default,
add_soa_default, ttl_default, minupdateinterval_default,
old_zone, old_rpz_okp);
if (result != ISC_R_SUCCESS) {
if (pview_must_detach) {
dns_view_detach(&pview);
}
return result;
}
}
/*
* If this is a reloading and the parameters and list of policy
* zones are unchanged, then use the same policy data.
* Data for individual zones that must be reloaded will be merged.
*/
if (*old_rpz_okp) {
if (old != NULL &&
memcmp(&old->p, &zones->p, sizeof(zones->p)) != 0)
{
*old_rpz_okp = false;
} else if ((old == NULL || old->rps_cstr == NULL) !=
(zones->rps_cstr == NULL))
{
*old_rpz_okp = false;
} else if (old != NULL && zones->rps_cstr != NULL &&
strcmp(old->rps_cstr, zones->rps_cstr) != 0)
{
*old_rpz_okp = false;
}
}
if (*old_rpz_okp) {
dns_rpz_zones_shutdown(view->rpzs);
dns_rpz_zones_detach(&view->rpzs);
dns_rpz_zones_attach(pview->rpzs, &view->rpzs);
dns_rpz_zones_detach(&pview->rpzs);
} else if (old != NULL && pview != NULL) {
++pview->rpzs->rpz_ver;
view->rpzs->rpz_ver = pview->rpzs->rpz_ver;
cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_DEBUG_LEVEL1,
"updated RPZ policy: version %d",
view->rpzs->rpz_ver);
}
if (pview_must_detach) {
dns_view_detach(&pview);
}
return ISC_R_SUCCESS;
}
static void
catz_addmodzone_cb(void *arg) {
catz_chgzone_t *cz = (catz_chgzone_t *)arg;
isc_result_t result;
dns_forwarders_t *dnsforwarders = NULL;
dns_name_t *name = NULL;
isc_buffer_t namebuf;
isc_buffer_t *confbuf = NULL;
char nameb[DNS_NAME_FORMATSIZE];
const cfg_obj_t *zlist = NULL;
cfg_obj_t *zoneconf = NULL;
cfg_obj_t *zoneobj = NULL;
ns_cfgctx_t *cfg = NULL;
dns_zone_t *zone = NULL;
if (isc_loop_shuttingdown(isc_loop_get(named_g_loopmgr, isc_tid()))) {
goto cleanup;
}
/*
* A non-empty 'catalog-zones' statement implies that 'allow-new-zones'
* is true, so this is expected to be non-NULL.
*/
cfg = (ns_cfgctx_t *)cz->view->new_zone_config;
if (cfg == NULL) {
CHECK(ISC_R_FAILURE);
}
name = dns_catz_entry_getname(cz->entry);
isc_buffer_init(&namebuf, nameb, DNS_NAME_FORMATSIZE);
dns_name_totext(name, DNS_NAME_OMITFINALDOT, &namebuf);
isc_buffer_putuint8(&namebuf, 0);
result = dns_fwdtable_find(cz->view->fwdtable, name, &dnsforwarders);
if (result == ISC_R_SUCCESS &&
dnsforwarders->fwdpolicy == dns_fwdpolicy_only)
{
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_addmodzone_cb: "
"zone '%s' will not be processed because of the "
"explicitly configured forwarding for that zone",
nameb);
goto cleanup;
}
result = dns_view_findzone(cz->view, name, DNS_ZTFIND_EXACT, &zone);
if (cz->mod) {
dns_catz_zone_t *parentcatz;
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: error \"%s\" while trying to "
"modify zone '%s'",
isc_result_totext(result), nameb);
goto cleanup;
}
if (!dns_zone_getadded(zone)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_addmodzone_cb: "
"zone '%s' is not a dynamically "
"added zone",
nameb);
goto cleanup;
}
parentcatz = dns_zone_get_parentcatz(zone);
if (parentcatz == NULL) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_addmodzone_cb: "
"zone '%s' exists and is not added by "
"a catalog zone, so won't be modified",
nameb);
goto cleanup;
}
if (parentcatz != cz->origin) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_addmodzone_cb: "
"zone '%s' exists in multiple "
"catalog zones",
nameb);
goto cleanup;
}
dns_zone_detach(&zone);
} else {
/* Zone shouldn't already exist when adding */
if (result == ISC_R_SUCCESS) {
if (dns_zone_get_parentcatz(zone) == NULL) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: "
"catz_addmodzone_cb: "
"zone '%s' will not be added "
"because it is an explicitly "
"configured zone",
nameb);
} else {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: "
"catz_addmodzone_cb: "
"zone '%s' will not be added "
"because another catalog zone "
"already contains an entry with "
"that zone",
nameb);
}
goto cleanup;
} else {
RUNTIME_CHECK(result == ISC_R_NOTFOUND);
}
}
RUNTIME_CHECK(zone == NULL);
/* Create a config for new zone */
confbuf = NULL;
result = dns_catz_generate_zonecfg(cz->origin, cz->entry, &confbuf);
if (result == ISC_R_SUCCESS) {
cfg_parser_reset(cfg->add_parser);
result = cfg_parse_buffer(cfg->add_parser, confbuf, "catz", 0,
&cfg_type_addzoneconf, 0, &zoneconf);
isc_buffer_free(&confbuf);
}
/*
* Fail if either dns_catz_generate_zonecfg() or cfg_parse_buffer()
* failed.
*/
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"catz: error \"%s\" while trying to generate "
"config for zone '%s'",
isc_result_totext(result), nameb);
goto cleanup;
}
CHECK(cfg_map_get(zoneconf, "zone", &zlist));
if (!cfg_obj_islist(zlist)) {
CHECK(ISC_R_FAILURE);
}
/* For now we only support adding one zone at a time */
zoneobj = cfg_listelt_value(cfg_list_first(zlist));
/* Mark view unfrozen so that zone can be added */
isc_loopmgr_pause(named_g_loopmgr);
dns_view_thaw(cz->view);
result = configure_zone(cfg->config, zoneobj, cfg->vconfig, cz->view,
&cz->cbd->server->viewlist,
&cz->cbd->server->kasplist,
&cz->cbd->server->keystorelist, cfg->actx, true,
false, true, cz->mod);
dns_view_freeze(cz->view);
isc_loopmgr_resume(named_g_loopmgr);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: failed to configure zone '%s' - %d", nameb,
result);
goto cleanup;
}
/* Is it there yet? */
CHECK(dns_view_findzone(cz->view, name, DNS_ZTFIND_EXACT, &zone));
/*
* Load the zone from the master file. If this fails, we'll
* need to undo the configuration we've done already.
*/
result = dns_zone_load(zone, true);
if (result != ISC_R_SUCCESS) {
dns_db_t *dbp = NULL;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"catz: dns_zone_load() failed "
"with %s; reverting.",
isc_result_totext(result));
/* If the zone loaded partially, unload it */
if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(zone);
}
/* Remove the zone from the zone table */
dns_view_delzone(cz->view, zone);
goto cleanup;
}
/* Flag the zone as having been added at runtime */
dns_zone_setadded(zone, true);
dns_zone_set_parentcatz(zone, cz->origin);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (zoneconf != NULL) {
cfg_obj_destroy(cfg->add_parser, &zoneconf);
}
if (dnsforwarders != NULL) {
dns_forwarders_detach(&dnsforwarders);
}
dns_catz_entry_detach(cz->origin, &cz->entry);
dns_catz_zone_detach(&cz->origin);
dns_view_weakdetach(&cz->view);
isc_mem_putanddetach(&cz->mctx, cz, sizeof(*cz));
}
static void
catz_delzone_cb(void *arg) {
catz_chgzone_t *cz = (catz_chgzone_t *)arg;
isc_result_t result;
dns_zone_t *zone = NULL;
dns_db_t *dbp = NULL;
char cname[DNS_NAME_FORMATSIZE];
const char *file = NULL;
if (isc_loop_shuttingdown(isc_loop_get(named_g_loopmgr, isc_tid()))) {
goto cleanup;
}
isc_loopmgr_pause(named_g_loopmgr);
dns_name_format(dns_catz_entry_getname(cz->entry), cname,
DNS_NAME_FORMATSIZE);
result = dns_view_findzone(cz->view, dns_catz_entry_getname(cz->entry),
DNS_ZTFIND_EXACT, &zone);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_delzone_cb: "
"zone '%s' not found",
cname);
goto resume;
}
if (!dns_zone_getadded(zone)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_delzone_cb: "
"zone '%s' is not a dynamically added zone",
cname);
goto resume;
}
if (dns_zone_get_parentcatz(zone) != cz->origin) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_delzone_cb: zone "
"'%s' exists in multiple catalog zones",
cname);
goto resume;
}
/* Stop answering for this zone */
if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(zone);
}
if (dns_view_delzone(cz->view, zone) != ISC_R_SUCCESS) {
goto resume;
}
file = dns_zone_getfile(zone);
if (file != NULL) {
isc_file_remove(file);
file = dns_zone_getjournal(zone);
if (file != NULL) {
isc_file_remove(file);
}
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"catz: catz_delzone_cb: "
"zone '%s' deleted",
cname);
resume:
isc_loopmgr_resume(named_g_loopmgr);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
dns_catz_entry_detach(cz->origin, &cz->entry);
dns_catz_zone_detach(&cz->origin);
dns_view_weakdetach(&cz->view);
isc_mem_putanddetach(&cz->mctx, cz, sizeof(*cz));
}
static isc_result_t
catz_run(dns_catz_entry_t *entry, dns_catz_zone_t *origin, dns_view_t *view,
void *udata, catz_type_t type) {
catz_chgzone_t *cz = NULL;
isc_job_cb action = NULL;
switch (type) {
case CATZ_ADDZONE:
case CATZ_MODZONE:
action = catz_addmodzone_cb;
break;
case CATZ_DELZONE:
action = catz_delzone_cb;
break;
default:
REQUIRE(0);
UNREACHABLE();
}
cz = isc_mem_get(view->mctx, sizeof(*cz));
*cz = (catz_chgzone_t){
.cbd = (catz_cb_data_t *)udata,
.mod = (type == CATZ_MODZONE),
};
isc_mem_attach(view->mctx, &cz->mctx);
dns_catz_entry_attach(entry, &cz->entry);
dns_catz_zone_attach(origin, &cz->origin);
dns_view_weakattach(view, &cz->view);
isc_async_run(named_g_mainloop, action, cz);
return ISC_R_SUCCESS;
}
static isc_result_t
catz_addzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, dns_view_t *view,
void *udata) {
return catz_run(entry, origin, view, udata, CATZ_ADDZONE);
}
static isc_result_t
catz_delzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, dns_view_t *view,
void *udata) {
return catz_run(entry, origin, view, udata, CATZ_DELZONE);
}
static isc_result_t
catz_modzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, dns_view_t *view,
void *udata) {
return catz_run(entry, origin, view, udata, CATZ_MODZONE);
}
static void
catz_changeview(dns_catz_entry_t *entry, void *arg1, void *arg2) {
dns_view_t *pview = arg1;
dns_view_t *view = arg2;
dns_zone_t *zone = NULL;
isc_result_t result = dns_view_findzone(
pview, dns_catz_entry_getname(entry), DNS_ZTFIND_EXACT, &zone);
if (result != ISC_R_SUCCESS) {
return;
}
dns_zone_setview(zone, view);
dns_view_addzone(view, zone);
dns_zone_detach(&zone);
}
static void
catz_reconfigure(dns_catz_entry_t *entry, void *arg1, void *arg2) {
dns_view_t *view = arg1;
catz_reconfig_data_t *data = arg2;
isc_buffer_t namebuf;
isc_buffer_t *confbuf = NULL;
const cfg_obj_t *zlist = NULL;
char nameb[DNS_NAME_FORMATSIZE];
cfg_obj_t *zoneconf = NULL;
cfg_obj_t *zoneobj = NULL;
ns_cfgctx_t *cfg = NULL;
dns_zone_t *zone = NULL;
isc_result_t result;
isc_buffer_init(&namebuf, nameb, DNS_NAME_FORMATSIZE);
dns_name_totext(dns_catz_entry_getname(entry), DNS_NAME_OMITFINALDOT,
&namebuf);
isc_buffer_putuint8(&namebuf, 0);
result = dns_view_findzone(view, dns_catz_entry_getname(entry),
DNS_ZTFIND_EXACT, &zone);
if (result != ISC_R_SUCCESS) {
return;
}
/*
* A non-empty 'catalog-zones' statement implies that 'allow-new-zones'
* is true, so this is expected to be non-NULL.
*/
cfg = (ns_cfgctx_t *)view->new_zone_config;
if (cfg == NULL) {
CHECK(ISC_R_FAILURE);
}
result = dns_catz_generate_zonecfg(data->catz, entry, &confbuf);
if (result == ISC_R_SUCCESS) {
cfg_parser_reset(cfg->add_parser);
result = cfg_parse_buffer(cfg->add_parser, confbuf, "catz", 0,
&cfg_type_addzoneconf, 0, &zoneconf);
isc_buffer_free(&confbuf);
}
/*
* Fail if either dns_catz_generate_zonecfg() or cfg_parse_buffer()
* failed.
*/
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"catz_reconfigure: error \"%s\" while trying to "
"generate config for member zone '%s'",
isc_result_totext(result), nameb);
goto cleanup;
}
CHECK(cfg_map_get(zoneconf, "zone", &zlist));
if (!cfg_obj_islist(zlist)) {
CHECK(ISC_R_FAILURE);
}
zoneobj = cfg_listelt_value(cfg_list_first(zlist));
result = configure_zone(data->config, zoneobj, cfg->vconfig, view,
&data->cbd->server->viewlist,
&data->cbd->server->kasplist,
&data->cbd->server->keystorelist, cfg->actx,
true, false, true, true);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"catz_reconfigure : error \"%s\" while trying to "
"reconfigure member zone '%s'",
isc_result_totext(result), nameb);
goto cleanup;
}
cleanup:
if (zoneconf != NULL) {
cfg_obj_destroy(cfg->add_parser, &zoneconf);
}
dns_zone_detach(&zone);
}
static isc_result_t
configure_catz_zone(dns_view_t *view, dns_view_t *pview,
const cfg_obj_t *config, const cfg_listelt_t *element) {
const cfg_obj_t *catz_obj, *obj;
dns_catz_zone_t *zone = NULL;
const char *str;
isc_result_t result;
dns_name_t origin;
dns_catz_options_t *opts;
dns_name_init(&origin, NULL);
catz_obj = cfg_listelt_value(element);
str = cfg_obj_asstring(cfg_tuple_get(catz_obj, "zone name"));
result = dns_name_fromstring(&origin, str, dns_rootname,
DNS_NAME_DOWNCASE, view->mctx);
if (result == ISC_R_SUCCESS && dns_name_equal(&origin, dns_rootname)) {
result = DNS_R_EMPTYLABEL;
}
if (result != ISC_R_SUCCESS) {
cfg_obj_log(catz_obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL,
"catz: invalid zone name '%s'", str);
goto cleanup;
}
result = dns_catz_zone_add(view->catzs, &origin, &zone);
if (result == ISC_R_EXISTS) {
catz_reconfig_data_t data = {
.catz = zone,
.config = config,
.cbd = (catz_cb_data_t *)dns_catz_zones_get_udata(
view->catzs),
};
/*
* We have to walk through all the member zones, re-attach
* them to the current view and reconfigure
*/
dns_catz_zone_for_each_entry2(zone, catz_changeview, pview,
view);
dns_catz_zone_for_each_entry2(zone, catz_reconfigure, view,
&data);
}
dns_catz_zone_resetdefoptions(zone);
opts = dns_catz_zone_getdefoptions(zone);
obj = cfg_tuple_get(catz_obj, "default-masters");
if (obj == NULL || !cfg_obj_istuple(obj)) {
obj = cfg_tuple_get(catz_obj, "default-primaries");
}
if (obj != NULL && cfg_obj_istuple(obj)) {
result = named_config_getipandkeylist(config, obj, view->mctx,
&opts->masters);
}
obj = cfg_tuple_get(catz_obj, "in-memory");
if (obj != NULL && cfg_obj_isboolean(obj)) {
opts->in_memory = cfg_obj_asboolean(obj);
}
obj = cfg_tuple_get(catz_obj, "zone-directory");
if (!opts->in_memory && obj != NULL && cfg_obj_isstring(obj)) {
opts->zonedir = isc_mem_strdup(view->mctx,
cfg_obj_asstring(obj));
if (isc_file_isdirectory(opts->zonedir) != ISC_R_SUCCESS) {
cfg_obj_log(obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL,
"catz: zone-directory '%s' "
"not found; zone files will not be "
"saved",
opts->zonedir);
opts->in_memory = true;
}
}
obj = cfg_tuple_get(catz_obj, "min-update-interval");
if (obj != NULL && cfg_obj_isduration(obj)) {
opts->min_update_interval = cfg_obj_asduration(obj);
}
cleanup:
dns_name_free(&origin, view->mctx);
return result;
}
static catz_cb_data_t ns_catz_cbdata;
static dns_catz_zonemodmethods_t ns_catz_zonemodmethods = {
catz_addzone, catz_modzone, catz_delzone, &ns_catz_cbdata
};
static isc_result_t
configure_catz(dns_view_t *view, dns_view_t *pview, const cfg_obj_t *config,
const cfg_obj_t *catz_obj) {
const cfg_listelt_t *zone_element = NULL;
const dns_catz_zones_t *old = NULL;
bool pview_must_detach = false;
isc_result_t result;
/* xxxwpk TODO do it cleaner, once, somewhere */
ns_catz_cbdata.server = named_g_server;
zone_element = cfg_list_first(cfg_tuple_get(catz_obj, "zone list"));
if (zone_element == NULL) {
return ISC_R_SUCCESS;
}
if (pview != NULL) {
old = pview->catzs;
} else {
result = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass, &pview);
if (result == ISC_R_SUCCESS) {
pview_must_detach = true;
old = pview->catzs;
}
}
if (old != NULL) {
dns_catz_zones_attach(pview->catzs, &view->catzs);
dns_catz_zones_detach(&pview->catzs);
dns_catz_prereconfig(view->catzs);
} else {
view->catzs = dns_catz_zones_new(view->mctx, named_g_loopmgr,
&ns_catz_zonemodmethods);
}
while (zone_element != NULL) {
CHECK(configure_catz_zone(view, pview, config, zone_element));
zone_element = cfg_list_next(zone_element);
}
if (old != NULL) {
dns_catz_postreconfig(view->catzs);
}
result = ISC_R_SUCCESS;
cleanup:
if (pview_must_detach) {
dns_view_detach(&pview);
}
return result;
}
#define CHECK_RRL(cond, pat, val1, val2) \
do { \
if (!(cond)) { \
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, pat, \
val1, val2); \
result = ISC_R_RANGE; \
goto cleanup; \
} \
} while (0)
#define CHECK_RRL_RATE(rate, def, max_rate, name) \
do { \
obj = NULL; \
rrl->rate.str = name; \
result = cfg_map_get(map, name, &obj); \
if (result == ISC_R_SUCCESS) { \
rrl->rate.r = cfg_obj_asuint32(obj); \
CHECK_RRL(rrl->rate.r <= max_rate, name " %d > %d", \
rrl->rate.r, max_rate); \
} else { \
rrl->rate.r = def; \
} \
rrl->rate.scaled = rrl->rate.r; \
} while (0)
static isc_result_t
configure_rrl(dns_view_t *view, const cfg_obj_t *config, const cfg_obj_t *map) {
const cfg_obj_t *obj;
dns_rrl_t *rrl;
isc_result_t result;
int min_entries, i, j;
/*
* Most DNS servers have few clients, but intentinally open
* recursive and authoritative servers often have many.
* So start with a small number of entries unless told otherwise
* to reduce cold-start costs.
*/
min_entries = 500;
obj = NULL;
result = cfg_map_get(map, "min-table-size", &obj);
if (result == ISC_R_SUCCESS) {
min_entries = cfg_obj_asuint32(obj);
if (min_entries < 1) {
min_entries = 1;
}
}
result = dns_rrl_init(&rrl, view, min_entries);
if (result != ISC_R_SUCCESS) {
return result;
}
i = ISC_MAX(20000, min_entries);
obj = NULL;
result = cfg_map_get(map, "max-table-size", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
CHECK_RRL(i >= min_entries,
"max-table-size %d < min-table-size %d", i,
min_entries);
}
rrl->max_entries = i;
CHECK_RRL_RATE(responses_per_second, 0, DNS_RRL_MAX_RATE,
"responses-per-second");
CHECK_RRL_RATE(referrals_per_second, rrl->responses_per_second.r,
DNS_RRL_MAX_RATE, "referrals-per-second");
CHECK_RRL_RATE(nodata_per_second, rrl->responses_per_second.r,
DNS_RRL_MAX_RATE, "nodata-per-second");
CHECK_RRL_RATE(nxdomains_per_second, rrl->responses_per_second.r,
DNS_RRL_MAX_RATE, "nxdomains-per-second");
CHECK_RRL_RATE(errors_per_second, rrl->responses_per_second.r,
DNS_RRL_MAX_RATE, "errors-per-second");
CHECK_RRL_RATE(all_per_second, 0, DNS_RRL_MAX_RATE, "all-per-second");
CHECK_RRL_RATE(slip, 2, DNS_RRL_MAX_SLIP, "slip");
i = 15;
obj = NULL;
result = cfg_map_get(map, "window", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
CHECK_RRL(i >= 1 && i <= DNS_RRL_MAX_WINDOW,
"window %d < 1 or > %d", i, DNS_RRL_MAX_WINDOW);
}
rrl->window = i;
i = 0;
obj = NULL;
result = cfg_map_get(map, "qps-scale", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
CHECK_RRL(i >= 1, "invalid 'qps-scale %d'%s", i, "");
}
rrl->qps_scale = i;
rrl->qps = 1.0;
i = 24;
obj = NULL;
result = cfg_map_get(map, "ipv4-prefix-length", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
CHECK_RRL(i >= 8 && i <= 32,
"invalid 'ipv4-prefix-length %d'%s", i, "");
}
rrl->ipv4_prefixlen = i;
if (i == 32) {
rrl->ipv4_mask = 0xffffffff;
} else {
rrl->ipv4_mask = htonl(0xffffffff << (32 - i));
}
i = 56;
obj = NULL;
result = cfg_map_get(map, "ipv6-prefix-length", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
CHECK_RRL(i >= 16 && i <= DNS_RRL_MAX_PREFIX,
"ipv6-prefix-length %d < 16 or > %d", i,
DNS_RRL_MAX_PREFIX);
}
rrl->ipv6_prefixlen = i;
for (j = 0; j < 4; ++j) {
if (i <= 0) {
rrl->ipv6_mask[j] = 0;
} else if (i < 32) {
rrl->ipv6_mask[j] = htonl(0xffffffff << (32 - i));
} else {
rrl->ipv6_mask[j] = 0xffffffff;
}
i -= 32;
}
obj = NULL;
result = cfg_map_get(map, "exempt-clients", &obj);
if (result == ISC_R_SUCCESS) {
result = cfg_acl_fromconfig(obj, config, named_g_lctx,
named_g_aclconfctx, named_g_mctx, 0,
&rrl->exempt);
CHECK_RRL(result == ISC_R_SUCCESS, "invalid %s%s",
"address match list", "");
}
obj = NULL;
result = cfg_map_get(map, "log-only", &obj);
if (result == ISC_R_SUCCESS && cfg_obj_asboolean(obj)) {
rrl->log_only = true;
} else {
rrl->log_only = false;
}
return ISC_R_SUCCESS;
cleanup:
dns_rrl_view_destroy(view);
return result;
}
static isc_result_t
add_soa(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name,
const dns_name_t *origin, const dns_name_t *contact) {
dns_dbnode_t *node = NULL;
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdatalist_t rdatalist;
dns_rdataset_t rdataset;
isc_result_t result;
unsigned char buf[DNS_SOA_BUFFERSIZE];
CHECK(dns_soa_buildrdata(origin, contact, dns_db_class(db), 0, 28800,
7200, 604800, 86400, buf, &rdata));
dns_rdatalist_init(&rdatalist);
rdatalist.type = rdata.type;
rdatalist.rdclass = rdata.rdclass;
rdatalist.ttl = 86400;
ISC_LIST_APPEND(rdatalist.rdata, &rdata, link);
dns_rdataset_init(&rdataset);
dns_rdatalist_tordataset(&rdatalist, &rdataset);
CHECK(dns_db_findnode(db, name, true, &node));
CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL));
cleanup:
if (node != NULL) {
dns_db_detachnode(db, &node);
}
return result;
}
static isc_result_t
add_ns(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name,
const dns_name_t *nsname) {
dns_dbnode_t *node = NULL;
dns_rdata_ns_t ns;
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdatalist_t rdatalist;
dns_rdataset_t rdataset;
isc_result_t result;
isc_buffer_t b;
unsigned char buf[DNS_NAME_MAXWIRE];
isc_buffer_init(&b, buf, sizeof(buf));
ns.common.rdtype = dns_rdatatype_ns;
ns.common.rdclass = dns_db_class(db);
ns.mctx = NULL;
dns_name_init(&ns.name, NULL);
dns_name_clone(nsname, &ns.name);
CHECK(dns_rdata_fromstruct(&rdata, dns_db_class(db), dns_rdatatype_ns,
&ns, &b));
dns_rdatalist_init(&rdatalist);
rdatalist.type = rdata.type;
rdatalist.rdclass = rdata.rdclass;
rdatalist.ttl = 86400;
ISC_LIST_APPEND(rdatalist.rdata, &rdata, link);
dns_rdataset_init(&rdataset);
dns_rdatalist_tordataset(&rdatalist, &rdataset);
CHECK(dns_db_findnode(db, name, true, &node));
CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL));
cleanup:
if (node != NULL) {
dns_db_detachnode(db, &node);
}
return result;
}
static isc_result_t
create_empty_zone(dns_zone_t *pzone, dns_name_t *name, dns_view_t *view,
const cfg_obj_t *zonelist, const char **empty_dbtype,
int empty_dbtypec, dns_zonestat_level_t statlevel) {
char namebuf[DNS_NAME_FORMATSIZE];
const cfg_listelt_t *element;
const cfg_obj_t *obj;
const cfg_obj_t *zconfig;
const cfg_obj_t *zoptions;
const char *default_dbtype[4] = { ZONEDB_DEFAULT };
const char *sep = ": view ";
const char *str;
const char *viewname = view->name;
dns_db_t *db = NULL;
dns_dbversion_t *version = NULL;
dns_fixedname_t cfixed;
dns_fixedname_t fixed;
dns_fixedname_t nsfixed;
dns_name_t *contact;
dns_name_t *ns;
dns_name_t *zname;
dns_zone_t *zone = NULL;
int default_dbtypec = 1;
isc_result_t result;
dns_namereln_t namereln;
int order;
unsigned int nlabels;
zname = dns_fixedname_initname(&fixed);
ns = dns_fixedname_initname(&nsfixed);
contact = dns_fixedname_initname(&cfixed);
/*
* Look for forward "zones" beneath this empty zone and if so
* create a custom db for the empty zone.
*/
for (element = cfg_list_first(zonelist); element != NULL;
element = cfg_list_next(element))
{
zconfig = cfg_listelt_value(element);
str = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
CHECK(dns_name_fromstring(zname, str, dns_rootname, 0, NULL));
namereln = dns_name_fullcompare(zname, name, &order, &nlabels);
if (namereln != dns_namereln_subdomain) {
continue;
}
zoptions = cfg_tuple_get(zconfig, "options");
obj = NULL;
(void)cfg_map_get(zoptions, "type", &obj);
if (obj != NULL &&
strcasecmp(cfg_obj_asstring(obj), "forward") == 0)
{
obj = NULL;
(void)cfg_map_get(zoptions, "forward", &obj);
if (obj == NULL) {
continue;
}
if (strcasecmp(cfg_obj_asstring(obj), "only") != 0) {
continue;
}
}
if (db == NULL) {
CHECK(dns_db_create(view->mctx, ZONEDB_DEFAULT, name,
dns_dbtype_zone, view->rdclass, 0,
NULL, &db));
CHECK(dns_db_newversion(db, &version));
if (strcmp(empty_dbtype[2], "@") == 0) {
dns_name_clone(name, ns);
} else {
CHECK(dns_name_fromstring(ns, empty_dbtype[2],
dns_rootname, 0,
NULL));
}
CHECK(dns_name_fromstring(contact, empty_dbtype[3],
dns_rootname, 0, NULL));
CHECK(add_soa(db, version, name, ns, contact));
CHECK(add_ns(db, version, name, ns));
}
CHECK(add_ns(db, version, zname, dns_rootname));
}
/*
* Is the existing zone ok to use?
*/
if (pzone != NULL) {
unsigned int typec;
const char **dbargv = NULL;
if (db != NULL) {
typec = default_dbtypec;
dbargv = default_dbtype;
} else {
typec = empty_dbtypec;
dbargv = empty_dbtype;
}
result = check_dbtype(pzone, typec, dbargv, view->mctx);
if (result != ISC_R_SUCCESS) {
pzone = NULL;
}
if (pzone != NULL &&
dns_zone_gettype(pzone) != dns_zone_primary)
{
pzone = NULL;
}
if (pzone != NULL && dns_zone_getfile(pzone) != NULL) {
pzone = NULL;
}
if (pzone != NULL) {
dns_zone_getraw(pzone, &zone);
if (zone != NULL) {
dns_zone_detach(&zone);
pzone = NULL;
}
}
}
if (pzone == NULL) {
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone));
CHECK(dns_zone_setorigin(zone, name));
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
if (db == NULL) {
dns_zone_setdbtype(zone, empty_dbtypec, empty_dbtype);
}
dns_zone_setclass(zone, view->rdclass);
dns_zone_settype(zone, dns_zone_primary);
dns_zone_setstats(zone, named_g_server->zonestats);
} else {
dns_zone_attach(pzone, &zone);
}
dns_zone_setoption(zone, ~DNS_ZONEOPT_NOCHECKNS, false);
dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true);
dns_zone_setcheckdstype(zone, dns_checkdstype_no);
dns_zone_setnotifytype(zone, dns_notifytype_no);
dns_zone_setdialup(zone, dns_dialuptype_no);
dns_zone_setautomatic(zone, true);
if (view->queryacl != NULL) {
dns_zone_setqueryacl(zone, view->queryacl);
} else {
dns_zone_clearqueryacl(zone);
}
if (view->queryonacl != NULL) {
dns_zone_setqueryonacl(zone, view->queryonacl);
} else {
dns_zone_clearqueryonacl(zone);
}
dns_zone_clearupdateacl(zone);
if (view->transferacl != NULL) {
dns_zone_setxfracl(zone, view->transferacl);
} else {
dns_zone_clearxfracl(zone);
}
setquerystats(zone, view->mctx, statlevel);
if (db != NULL) {
dns_db_closeversion(db, &version, true);
CHECK(dns_zone_replacedb(zone, db, false));
}
dns_zone_setoption(zone, DNS_ZONEOPT_AUTOEMPTY, true);
dns_zone_setview(zone, view);
CHECK(dns_view_addzone(view, zone));
if (!strcmp(viewname, "_default")) {
sep = "";
viewname = "";
}
dns_name_format(name, namebuf, sizeof(namebuf));
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_ZONELOAD,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"automatic empty zone%s%s: %s", sep, viewname, namebuf);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (version != NULL) {
dns_db_closeversion(db, &version, false);
}
if (db != NULL) {
dns_db_detach(&db);
}
INSIST(version == NULL);
return result;
}
static isc_result_t
create_ipv4only_zone(dns_zone_t *pzone, dns_view_t *view,
const dns_name_t *name, const char *type, isc_mem_t *mctx,
const char *server, const char *contact) {
char namebuf[DNS_NAME_FORMATSIZE];
const char *dbtype[4] = { "_builtin", NULL, "@", "." };
const char *sep = ": view ";
const char *viewname = view->name;
dns_zone_t *zone = NULL;
int dbtypec = 4;
isc_result_t result;
REQUIRE(type != NULL);
if (!strcmp(viewname, "_default")) {
sep = "";
viewname = "";
}
dbtype[1] = type;
if (server != NULL) {
dbtype[2] = server;
}
if (contact != NULL) {
dbtype[3] = contact;
}
if (pzone != NULL) {
result = check_dbtype(pzone, dbtypec, dbtype, view->mctx);
if (result != ISC_R_SUCCESS) {
pzone = NULL;
}
}
if (pzone == NULL) {
/*
* Create the actual zone.
*/
dns_zone_create(&zone, mctx, 0);
CHECK(dns_zone_setorigin(zone, name));
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
dns_zone_setclass(zone, view->rdclass);
dns_zone_settype(zone, dns_zone_primary);
dns_zone_setstats(zone, named_g_server->zonestats);
dns_zone_setdbtype(zone, dbtypec, dbtype);
dns_zone_setdialup(zone, dns_dialuptype_no);
dns_zone_setcheckdstype(zone, dns_checkdstype_no);
dns_zone_setnotifytype(zone, dns_notifytype_no);
dns_zone_setautomatic(zone, true);
dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true);
} else {
dns_zone_attach(pzone, &zone);
}
if (view->queryacl != NULL) {
dns_zone_setqueryacl(zone, view->queryacl);
} else {
dns_zone_clearqueryacl(zone);
}
if (view->queryonacl != NULL) {
dns_zone_setqueryonacl(zone, view->queryonacl);
} else {
dns_zone_clearqueryonacl(zone);
}
dns_zone_setview(zone, view);
CHECK(dns_view_addzone(view, zone));
dns_name_format(name, namebuf, sizeof(namebuf));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"automatic ipv4only zone%s%s: %s", sep, viewname,
namebuf);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
#ifdef HAVE_DNSTAP
static isc_result_t
configure_dnstap(const cfg_obj_t **maps, dns_view_t *view) {
isc_result_t result;
const cfg_obj_t *obj, *obj2;
const cfg_listelt_t *element;
const char *dpath;
const cfg_obj_t *dlist = NULL;
dns_dtmsgtype_t dttypes = 0;
unsigned int i;
struct fstrm_iothr_options *fopt = NULL;
result = named_config_get(maps, "dnstap", &dlist);
if (result != ISC_R_SUCCESS) {
return ISC_R_SUCCESS;
}
for (element = cfg_list_first(dlist); element != NULL;
element = cfg_list_next(element))
{
const char *str;
dns_dtmsgtype_t dt = 0;
obj = cfg_listelt_value(element);
obj2 = cfg_tuple_get(obj, "type");
str = cfg_obj_asstring(obj2);
if (strcasecmp(str, "client") == 0) {
dt |= DNS_DTTYPE_CQ | DNS_DTTYPE_CR;
} else if (strcasecmp(str, "auth") == 0) {
dt |= DNS_DTTYPE_AQ | DNS_DTTYPE_AR;
} else if (strcasecmp(str, "resolver") == 0) {
dt |= DNS_DTTYPE_RQ | DNS_DTTYPE_RR;
} else if (strcasecmp(str, "forwarder") == 0) {
dt |= DNS_DTTYPE_FQ | DNS_DTTYPE_FR;
} else if (strcasecmp(str, "update") == 0) {
dt |= DNS_DTTYPE_UQ | DNS_DTTYPE_UR;
} else if (strcasecmp(str, "all") == 0) {
dt |= DNS_DTTYPE_CQ | DNS_DTTYPE_CR | DNS_DTTYPE_AQ |
DNS_DTTYPE_AR | DNS_DTTYPE_RQ | DNS_DTTYPE_RR |
DNS_DTTYPE_FQ | DNS_DTTYPE_FR | DNS_DTTYPE_UQ |
DNS_DTTYPE_UR;
}
obj2 = cfg_tuple_get(obj, "mode");
if (obj2 == NULL || cfg_obj_isvoid(obj2)) {
dttypes |= dt;
continue;
}
str = cfg_obj_asstring(obj2);
if (strcasecmp(str, "query") == 0) {
dt &= ~DNS_DTTYPE_RESPONSE;
} else if (strcasecmp(str, "response") == 0) {
dt &= ~DNS_DTTYPE_QUERY;
}
dttypes |= dt;
}
if (named_g_server->dtenv == NULL && dttypes != 0) {
dns_dtmode_t dmode;
uint64_t max_size = 0;
uint32_t rolls = 0;
isc_log_rollsuffix_t suffix = isc_log_rollsuffix_increment;
obj = NULL;
CHECKM(named_config_get(maps, "dnstap-output", &obj),
"'dnstap-output' must be set if 'dnstap' is set");
obj2 = cfg_tuple_get(obj, "mode");
if (obj2 == NULL) {
CHECKM(ISC_R_FAILURE, "dnstap-output mode not found");
}
if (strcasecmp(cfg_obj_asstring(obj2), "file") == 0) {
dmode = dns_dtmode_file;
} else {
dmode = dns_dtmode_unix;
}
obj2 = cfg_tuple_get(obj, "path");
if (obj2 == NULL) {
CHECKM(ISC_R_FAILURE, "dnstap-output path not found");
}
dpath = cfg_obj_asstring(obj2);
obj2 = cfg_tuple_get(obj, "size");
if (obj2 != NULL && cfg_obj_isuint64(obj2)) {
max_size = cfg_obj_asuint64(obj2);
if (max_size > SIZE_MAX) {
cfg_obj_log(obj2, named_g_lctx, ISC_LOG_WARNING,
"'dnstap-output size "
"%" PRIu64 "' "
"is too large for this "
"system; reducing to %lu",
max_size, (unsigned long)SIZE_MAX);
max_size = SIZE_MAX;
}
}
obj2 = cfg_tuple_get(obj, "versions");
if (obj2 != NULL && cfg_obj_isuint32(obj2)) {
rolls = cfg_obj_asuint32(obj2);
} else {
rolls = ISC_LOG_ROLLINFINITE;
}
obj2 = cfg_tuple_get(obj, "suffix");
if (obj2 != NULL && cfg_obj_isstring(obj2) &&
strcasecmp(cfg_obj_asstring(obj2), "timestamp") == 0)
{
suffix = isc_log_rollsuffix_timestamp;
}
fopt = fstrm_iothr_options_init();
/*
* Both network threads and worker threads may log dnstap data.
*/
fstrm_iothr_options_set_num_input_queues(fopt,
2 * named_g_cpus);
fstrm_iothr_options_set_queue_model(
fopt, FSTRM_IOTHR_QUEUE_MODEL_MPSC);
obj = NULL;
result = named_config_get(maps, "fstrm-set-buffer-hint", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
fstrm_iothr_options_set_buffer_hint(fopt, i);
}
obj = NULL;
result = named_config_get(maps, "fstrm-set-flush-timeout",
&obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
fstrm_iothr_options_set_flush_timeout(fopt, i);
}
obj = NULL;
result = named_config_get(maps, "fstrm-set-input-queue-size",
&obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
fstrm_iothr_options_set_input_queue_size(fopt, i);
}
obj = NULL;
result = named_config_get(
maps, "fstrm-set-output-notify-threshold", &obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
fstrm_iothr_options_set_queue_notify_threshold(fopt, i);
}
obj = NULL;
result = named_config_get(maps, "fstrm-set-output-queue-model",
&obj);
if (result == ISC_R_SUCCESS) {
if (strcasecmp(cfg_obj_asstring(obj), "spsc") == 0) {
i = FSTRM_IOTHR_QUEUE_MODEL_SPSC;
} else {
i = FSTRM_IOTHR_QUEUE_MODEL_MPSC;
}
fstrm_iothr_options_set_queue_model(fopt, i);
}
obj = NULL;
result = named_config_get(maps, "fstrm-set-output-queue-size",
&obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asuint32(obj);
fstrm_iothr_options_set_output_queue_size(fopt, i);
}
obj = NULL;
result = named_config_get(maps, "fstrm-set-reopen-interval",
&obj);
if (result == ISC_R_SUCCESS) {
i = cfg_obj_asduration(obj);
fstrm_iothr_options_set_reopen_interval(fopt, i);
}
CHECKM(dns_dt_create(named_g_mctx, dmode, dpath, &fopt,
named_g_mainloop, &named_g_server->dtenv),
"unable to create dnstap environment");
CHECKM(dns_dt_setupfile(named_g_server->dtenv, max_size, rolls,
suffix),
"unable to set up dnstap logfile");
}
if (named_g_server->dtenv == NULL) {
return ISC_R_SUCCESS;
}
obj = NULL;
result = named_config_get(maps, "dnstap-version", &obj);
if (result != ISC_R_SUCCESS) {
/* not specified; use the product and version */
dns_dt_setversion(named_g_server->dtenv, PACKAGE_STRING);
} else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) {
/* Quoted string */
dns_dt_setversion(named_g_server->dtenv, cfg_obj_asstring(obj));
}
obj = NULL;
result = named_config_get(maps, "dnstap-identity", &obj);
if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) {
/* "hostname" is interpreted as boolean true */
char buf[256];
if (gethostname(buf, sizeof(buf)) == 0) {
dns_dt_setidentity(named_g_server->dtenv, buf);
}
} else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) {
/* Quoted string */
dns_dt_setidentity(named_g_server->dtenv,
cfg_obj_asstring(obj));
}
dns_dt_attach(named_g_server->dtenv, &view->dtenv);
view->dttypes = dttypes;
result = ISC_R_SUCCESS;
cleanup:
if (fopt != NULL) {
fstrm_iothr_options_destroy(&fopt);
}
return result;
}
#endif /* HAVE_DNSTAP */
static isc_result_t
create_mapped_acl(void) {
isc_result_t result;
dns_acl_t *acl = NULL;
struct in6_addr in6 = IN6ADDR_V4MAPPED_INIT;
isc_netaddr_t addr;
isc_netaddr_fromin6(&addr, &in6);
dns_acl_create(named_g_mctx, 1, &acl);
result = dns_iptable_addprefix(acl->iptable, &addr, 96, true);
if (result == ISC_R_SUCCESS) {
dns_acl_attach(acl, &named_g_mapped);
}
dns_acl_detach(&acl);
return result;
}
/*%
* A callback for the cfg_pluginlist_foreach() call in configure_view() below.
* If registering any plugin fails, registering subsequent ones is not
* attempted.
*/
static isc_result_t
register_one_plugin(const cfg_obj_t *config, const cfg_obj_t *obj,
const char *plugin_path, const char *parameters,
void *callback_data) {
dns_view_t *view = callback_data;
char full_path[PATH_MAX];
isc_result_t result;
result = ns_plugin_expandpath(plugin_path, full_path,
sizeof(full_path));
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"%s: plugin configuration failed: "
"unable to get full plugin path: %s",
plugin_path, isc_result_totext(result));
return result;
}
result = ns_plugin_register(full_path, parameters, config,
cfg_obj_file(obj), cfg_obj_line(obj),
named_g_mctx, named_g_lctx,
named_g_aclconfctx, view);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"%s: plugin configuration failed: %s", full_path,
isc_result_totext(result));
}
return result;
}
/*
* Determine if a minimal-sized cache can be used for a given view, according
* to 'maps' (implicit defaults, global options, view options) and 'optionmaps'
* (global options, view options). This is only allowed for views which have
* recursion disabled and do not have "max-cache-size" set explicitly. Using
* minimal-sized caches prevents a situation in which all explicitly configured
* and built-in views inherit the default "max-cache-size 90%;" setting, which
* could lead to memory exhaustion with multiple views configured.
*/
static bool
minimal_cache_allowed(const cfg_obj_t *maps[4],
const cfg_obj_t *optionmaps[3]) {
const cfg_obj_t *obj;
/*
* Do not use a minimal-sized cache for a view with recursion enabled.
*/
obj = NULL;
(void)named_config_get(maps, "recursion", &obj);
INSIST(obj != NULL);
if (cfg_obj_asboolean(obj)) {
return false;
}
/*
* Do not use a minimal-sized cache if a specific size was requested.
*/
obj = NULL;
(void)named_config_get(optionmaps, "max-cache-size", &obj);
if (obj != NULL) {
return false;
}
return true;
}
static const char *const response_synonyms[] = { "response", NULL };
/*
* Configure 'view' according to 'vconfig', taking defaults from
* 'config' where values are missing in 'vconfig'.
*
* When configuring the default view, 'vconfig' will be NULL and the
* global defaults in 'config' used exclusively.
*/
static isc_result_t
configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
cfg_obj_t *vconfig, named_cachelist_t *cachelist,
named_cachelist_t *oldcachelist, dns_kasplist_t *kasplist,
dns_keystorelist_t *keystores, const cfg_obj_t *bindkeys,
isc_mem_t *mctx, cfg_aclconfctx_t *actx, bool need_hints) {
const cfg_obj_t *maps[4];
const cfg_obj_t *cfgmaps[3];
const cfg_obj_t *optionmaps[3];
const cfg_obj_t *options = NULL;
const cfg_obj_t *voptions = NULL;
const cfg_obj_t *forwardtype;
const cfg_obj_t *forwarders;
const cfg_obj_t *alternates;
const cfg_obj_t *zonelist;
const cfg_obj_t *dlzlist;
const cfg_obj_t *dlz;
const cfg_obj_t *prefetch_trigger;
const cfg_obj_t *prefetch_eligible;
unsigned int dlzargc;
char **dlzargv;
const cfg_obj_t *dyndb_list, *plugin_list;
const cfg_obj_t *disabled;
const cfg_obj_t *obj, *obj2;
const cfg_listelt_t *element = NULL;
const cfg_listelt_t *zone_element_latest = NULL;
in_port_t port;
dns_cache_t *cache = NULL;
isc_result_t result;
size_t max_cache_size;
uint32_t max_cache_size_percent = 0;
size_t max_adb_size;
uint32_t lame_ttl, fail_ttl;
uint32_t max_stale_ttl = 0;
uint32_t stale_refresh_time = 0;
dns_tsigkeyring_t *ring = NULL;
dns_transport_list_t *transports = NULL;
dns_view_t *pview = NULL; /* Production view */
dns_dispatch_t *dispatch4 = NULL;
dns_dispatch_t *dispatch6 = NULL;
bool rpz_configured = false;
bool catz_configured = false;
bool shared_cache = false;
int i = 0, j = 0, k = 0;
const char *str;
const char *cachename = NULL;
dns_order_t *order = NULL;
uint32_t udpsize;
uint32_t maxbits;
unsigned int resopts = 0;
dns_zone_t *zone = NULL;
uint32_t clients_per_query, max_clients_per_query;
bool empty_zones_enable;
const cfg_obj_t *disablelist = NULL;
isc_stats_t *resstats = NULL;
dns_stats_t *resquerystats = NULL;
bool auto_root = false;
named_cache_t *nsc = NULL;
bool zero_no_soattl;
dns_acl_t *clients = NULL, *mapped = NULL, *excluded = NULL;
unsigned int query_timeout;
bool old_rpz_ok = false;
dns_dyndbctx_t *dctx = NULL;
dns_ntatable_t *ntatable = NULL;
const char *qminmode = NULL;
dns_adb_t *adb = NULL;
bool oldcache = false;
REQUIRE(DNS_VIEW_VALID(view));
if (config != NULL) {
(void)cfg_map_get(config, "options", &options);
}
/*
* maps: view options, options, defaults
* cfgmaps: view options, config
* optionmaps: view options, options
*/
if (vconfig != NULL) {
voptions = cfg_tuple_get(vconfig, "options");
maps[i++] = voptions;
optionmaps[j++] = voptions;
cfgmaps[k++] = voptions;
}
if (options != NULL) {
maps[i++] = options;
optionmaps[j++] = options;
}
maps[i++] = named_g_defaults;
maps[i] = NULL;
optionmaps[j] = NULL;
if (config != NULL) {
cfgmaps[k++] = config;
}
cfgmaps[k] = NULL;
/*
* Set the view's port number for outgoing queries.
*/
CHECKM(named_config_getport(config, "port", &port), "port");
dns_view_setdstport(view, port);
/*
* Make the list of response policy zone names for a view that
* is used for real lookups and so cares about hints.
*/
obj = NULL;
if (view->rdclass == dns_rdataclass_in && need_hints &&
named_config_get(maps, "response-policy", &obj) == ISC_R_SUCCESS)
{
CHECK(configure_rpz(view, NULL, maps, obj, &old_rpz_ok));
rpz_configured = true;
}
obj = NULL;
if (view->rdclass != dns_rdataclass_in && need_hints &&
named_config_get(maps, "catalog-zones", &obj) == ISC_R_SUCCESS)
{
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"'catalog-zones' option is only supported "
"for views with class IN");
}
obj = NULL;
if (view->rdclass == dns_rdataclass_in && need_hints &&
named_config_get(maps, "catalog-zones", &obj) == ISC_R_SUCCESS)
{
CHECK(configure_catz(view, NULL, config, obj));
catz_configured = true;
}
/*
* Configure the zones.
*/
zonelist = NULL;
if (voptions != NULL) {
(void)cfg_map_get(voptions, "zone", &zonelist);
} else {
(void)cfg_map_get(config, "zone", &zonelist);
}
/*
* Load zone configuration
*/
for (element = cfg_list_first(zonelist); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *zconfig = cfg_listelt_value(element);
CHECK(configure_zone(config, zconfig, vconfig, view, viewlist,
kasplist, keystores, actx, false,
old_rpz_ok, false, false));
zone_element_latest = element;
}
/*
* Check that a primary or secondary zone was found for each
* zone named in the response policy statement, unless we are
* using RPZ service interface.
*/
if (view->rpzs != NULL && !view->rpzs->p.dnsrps_enabled) {
dns_rpz_num_t n;
for (n = 0; n < view->rpzs->p.num_zones; ++n) {
if ((view->rpzs->defined & DNS_RPZ_ZBIT(n)) == 0) {
char namebuf[DNS_NAME_FORMATSIZE];
dns_name_format(&view->rpzs->zones[n]->origin,
namebuf, sizeof(namebuf));
isc_log_write(named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
DNS_RPZ_ERROR_LEVEL,
"rpz '%s' is not a primary or a "
"secondary zone",
namebuf);
result = ISC_R_NOTFOUND;
goto cleanup;
}
}
}
/*
* If we're allowing added zones, then load zone configuration
* from the newzone file for zones that were added during previous
* runs.
*/
CHECK(configure_newzones(view, config, vconfig, actx));
/*
* Create Dynamically Loadable Zone driver.
*/
dlzlist = NULL;
if (voptions != NULL) {
(void)cfg_map_get(voptions, "dlz", &dlzlist);
} else {
(void)cfg_map_get(config, "dlz", &dlzlist);
}
for (element = cfg_list_first(dlzlist); element != NULL;
element = cfg_list_next(element))
{
dlz = cfg_listelt_value(element);
obj = NULL;
(void)cfg_map_get(dlz, "database", &obj);
if (obj != NULL) {
dns_dlzdb_t *dlzdb = NULL;
const cfg_obj_t *name, *search = NULL;
char *s = isc_mem_strdup(mctx, cfg_obj_asstring(obj));
if (s == NULL) {
result = ISC_R_NOMEMORY;
goto cleanup;
}
result = isc_commandline_strtoargv(mctx, s, &dlzargc,
&dlzargv, 0);
if (result != ISC_R_SUCCESS) {
isc_mem_free(mctx, s);
goto cleanup;
}
name = cfg_map_getname(dlz);
result = dns_dlzcreate(mctx, cfg_obj_asstring(name),
dlzargv[0], dlzargc, dlzargv,
&dlzdb);
isc_mem_free(mctx, s);
isc_mem_cput(mctx, dlzargv, dlzargc, sizeof(*dlzargv));
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
/*
* If the DLZ backend supports configuration,
* and is searchable, then call its configure
* method now. If not searchable, we'll take
* care of it when we process the zone statement.
*/
(void)cfg_map_get(dlz, "search", &search);
if (search == NULL || cfg_obj_asboolean(search)) {
dlzdb->search = true;
result = dns_dlzconfigure(
view, dlzdb, dlzconfigure_callback);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
ISC_LIST_APPEND(view->dlz_searched, dlzdb,
link);
} else {
dlzdb->search = false;
ISC_LIST_APPEND(view->dlz_unsearched, dlzdb,
link);
}
}
}
/*
* Obtain configuration parameters that affect the decision of whether
* we can reuse/share an existing cache.
*/
obj = NULL;
result = named_config_get(maps, "max-cache-size", &obj);
INSIST(result == ISC_R_SUCCESS);
/*
* If "-T maxcachesize=..." is in effect, it overrides any other
* "max-cache-size" setting found in configuration, either implicit or
* explicit. For simplicity, the value passed to that command line
* option is always treated as the number of bytes to set
* "max-cache-size" to.
*/
if (named_g_maxcachesize != 0) {
max_cache_size = named_g_maxcachesize;
} else if (minimal_cache_allowed(maps, optionmaps)) {
/*
* dns_cache_setcachesize() will adjust this to the smallest
* allowed value.
*/
max_cache_size = 1;
} else if (cfg_obj_isstring(obj)) {
str = cfg_obj_asstring(obj);
INSIST(strcasecmp(str, "unlimited") == 0);
max_cache_size = 0;
} else if (cfg_obj_ispercentage(obj)) {
max_cache_size = SIZE_AS_PERCENT;
max_cache_size_percent = cfg_obj_aspercentage(obj);
} else {
uint64_t value = cfg_obj_asuint64(obj);
if (value > SIZE_MAX) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"'max-cache-size "
"%" PRIu64 "' "
"is too large for this "
"system; reducing to %lu",
value, (unsigned long)SIZE_MAX);
value = SIZE_MAX;
}
max_cache_size = (size_t)value;
}
if (max_cache_size == SIZE_AS_PERCENT) {
uint64_t totalphys = isc_meminfo_totalphys();
max_cache_size =
(size_t)(totalphys * max_cache_size_percent / 100);
if (totalphys == 0) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"Unable to determine amount of physical "
"memory, setting 'max-cache-size' to "
"unlimited");
} else {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_INFO,
"'max-cache-size %d%%' "
"- setting to %" PRIu64 "MB "
"(out of %" PRIu64 "MB)",
max_cache_size_percent,
(uint64_t)(max_cache_size / (1024 * 1024)),
totalphys / (1024 * 1024));
}
}
/* Check-names. */
obj = NULL;
result = named_checknames_get(maps, response_synonyms, &obj);
INSIST(result == ISC_R_SUCCESS);
str = cfg_obj_asstring(obj);
if (strcasecmp(str, "fail") == 0) {
resopts |= DNS_RESOLVER_CHECKNAMES |
DNS_RESOLVER_CHECKNAMESFAIL;
view->checknames = true;
} else if (strcasecmp(str, "warn") == 0) {
resopts |= DNS_RESOLVER_CHECKNAMES;
view->checknames = false;
} else if (strcasecmp(str, "ignore") == 0) {
view->checknames = false;
} else {
UNREACHABLE();
}
obj = NULL;
result = named_config_get(maps, "zero-no-soa-ttl-cache", &obj);
INSIST(result == ISC_R_SUCCESS);
zero_no_soattl = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "resolver-use-dns64", &obj);
INSIST(result == ISC_R_SUCCESS);
view->usedns64 = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "dns64", &obj);
if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") &&
strcmp(view->name, "_meta"))
{
isc_netaddr_t na, suffix, *sp;
unsigned int prefixlen;
const char *server, *contact;
const cfg_obj_t *myobj;
myobj = NULL;
result = named_config_get(maps, "dns64-server", &myobj);
if (result == ISC_R_SUCCESS) {
server = cfg_obj_asstring(myobj);
} else {
server = NULL;
}
myobj = NULL;
result = named_config_get(maps, "dns64-contact", &myobj);
if (result == ISC_R_SUCCESS) {
contact = cfg_obj_asstring(myobj);
} else {
contact = NULL;
}
for (element = cfg_list_first(obj); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *map = cfg_listelt_value(element);
dns_dns64_t *dns64 = NULL;
unsigned int dns64options = 0;
cfg_obj_asnetprefix(cfg_map_getname(map), &na,
&prefixlen);
obj = NULL;
(void)cfg_map_get(map, "suffix", &obj);
if (obj != NULL) {
sp = &suffix;
isc_netaddr_fromsockaddr(
sp, cfg_obj_assockaddr(obj));
} else {
sp = NULL;
}
clients = mapped = excluded = NULL;
obj = NULL;
(void)cfg_map_get(map, "clients", &obj);
if (obj != NULL) {
result = cfg_acl_fromconfig(obj, config,
named_g_lctx, actx,
mctx, 0, &clients);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
obj = NULL;
(void)cfg_map_get(map, "mapped", &obj);
if (obj != NULL) {
result = cfg_acl_fromconfig(obj, config,
named_g_lctx, actx,
mctx, 0, &mapped);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
obj = NULL;
(void)cfg_map_get(map, "exclude", &obj);
if (obj != NULL) {
result = cfg_acl_fromconfig(obj, config,
named_g_lctx, actx,
mctx, 0, &excluded);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
} else {
if (named_g_mapped == NULL) {
result = create_mapped_acl();
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
dns_acl_attach(named_g_mapped, &excluded);
}
obj = NULL;
(void)cfg_map_get(map, "recursive-only", &obj);
if (obj != NULL && cfg_obj_asboolean(obj)) {
dns64options |= DNS_DNS64_RECURSIVE_ONLY;
}
obj = NULL;
(void)cfg_map_get(map, "break-dnssec", &obj);
if (obj != NULL && cfg_obj_asboolean(obj)) {
dns64options |= DNS_DNS64_BREAK_DNSSEC;
}
result = dns_dns64_create(mctx, &na, prefixlen, sp,
clients, mapped, excluded,
dns64options, &dns64);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
dns_dns64_append(&view->dns64, dns64);
view->dns64cnt++;
result = dns64_reverse(view, mctx, &na, prefixlen,
server, contact);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
if (clients != NULL) {
dns_acl_detach(&clients);
}
if (mapped != NULL) {
dns_acl_detach(&mapped);
}
if (excluded != NULL) {
dns_acl_detach(&excluded);
}
}
}
obj = NULL;
result = named_config_get(maps, "dnssec-accept-expired", &obj);
INSIST(result == ISC_R_SUCCESS);
view->acceptexpired = cfg_obj_asboolean(obj);
obj = NULL;
/* 'optionmaps', not 'maps': don't check named_g_defaults yet */
(void)named_config_get(optionmaps, "dnssec-validation", &obj);
if (obj == NULL) {
/*
* Default to VALIDATION_DEFAULT as set in config.c.
*/
(void)cfg_map_get(named_g_defaults, "dnssec-validation", &obj);
INSIST(obj != NULL);
}
if (obj != NULL) {
if (cfg_obj_isboolean(obj)) {
view->enablevalidation = cfg_obj_asboolean(obj);
} else {
/*
* If dnssec-validation is set but not boolean,
* then it must be "auto"
*/
view->enablevalidation = true;
auto_root = true;
}
}
obj = NULL;
result = named_config_get(maps, "max-cache-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
view->maxcachettl = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "max-ncache-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
view->maxncachettl = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "min-cache-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
view->mincachettl = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "min-ncache-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
view->minncachettl = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "synth-from-dnssec", &obj);
INSIST(result == ISC_R_SUCCESS);
view->synthfromdnssec = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "stale-cache-enable", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_asboolean(obj)) {
obj = NULL;
result = named_config_get(maps, "max-stale-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
max_stale_ttl = ISC_MAX(cfg_obj_asduration(obj), 1);
}
/*
* If 'stale-cache-enable' is false, max_stale_ttl is set to 0,
* meaning keeping stale RRsets in cache is disabled.
*/
obj = NULL;
result = named_config_get(maps, "stale-answer-enable", &obj);
INSIST(result == ISC_R_SUCCESS);
view->staleanswersenable = cfg_obj_asboolean(obj);
result = dns_viewlist_find(&named_g_server->viewlist, view->name,
view->rdclass, &pview);
if (result == ISC_R_SUCCESS) {
view->staleanswersok = pview->staleanswersok;
dns_view_detach(&pview);
} else {
view->staleanswersok = dns_stale_answer_conf;
}
obj = NULL;
result = named_config_get(maps, "stale-answer-client-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_isstring(obj)) {
/*
* The only string values available for this option
* are "disabled" and "off".
* We use (uint32_t) -1 to represent disabled since
* a value of zero means that stale data can be used
* to promptly answer the query, while an attempt to
* refresh the RRset will still be made in background.
*/
view->staleanswerclienttimeout = (uint32_t)-1;
} else {
view->staleanswerclienttimeout = cfg_obj_asuint32(obj);
/*
* BIND 9 no longer supports non-zero values of
* stale-answer-client-timeout.
*/
if (view->staleanswerclienttimeout != 0) {
view->staleanswerclienttimeout = 0;
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"BIND 9 no longer supports non-zero values of "
"stale-answer-client-timeout, adjusted to 0");
}
}
obj = NULL;
result = named_config_get(maps, "stale-refresh-time", &obj);
INSIST(result == ISC_R_SUCCESS);
stale_refresh_time = cfg_obj_asduration(obj);
/*
* Configure the view's cache.
*
* First, check to see if there are any attach-cache options. If yes,
* attempt to lookup an existing cache at attach it to the view. If
* there is not one, then try to reuse an existing cache if possible;
* otherwise create a new cache.
*
* Note that the ADB is not preserved or shared in either case.
*
* When a matching view is found, the associated statistics are also
* retrieved and reused.
*
* XXX Determining when it is safe to reuse or share a cache is tricky.
* When the view's configuration changes, the cached data may become
* invalid because it reflects our old view of the world. We check
* some of the configuration parameters that could invalidate the cache
* or otherwise make it unshareable, but there are other configuration
* options that should be checked. For example, if a view uses a
* forwarder, changes in the forwarder configuration may invalidate
* the cache. At the moment, it's the administrator's responsibility to
* ensure these configuration options don't invalidate reusing/sharing.
*/
obj = NULL;
result = named_config_get(maps, "attach-cache", &obj);
if (result == ISC_R_SUCCESS) {
cachename = cfg_obj_asstring(obj);
} else {
cachename = view->name;
}
nsc = cachelist_find(cachelist, cachename, view->rdclass);
if (result == ISC_R_SUCCESS && nsc == NULL) {
/*
* If we're using 'attach-cache' but didn't find the
* specified cache in the cache list already, check
* the old list.
*/
nsc = cachelist_find(oldcachelist, cachename, view->rdclass);
oldcache = true;
}
if (nsc != NULL) {
if (!cache_sharable(nsc->primaryview, view, zero_no_soattl,
max_cache_size, max_stale_ttl,
stale_refresh_time))
{
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"view %s can't use existing cache %s due "
"to configuration parameter mismatch",
view->name,
dns_cache_getname(nsc->cache));
nsc = NULL;
} else {
if (oldcache) {
ISC_LIST_UNLINK(*oldcachelist, nsc, link);
ISC_LIST_APPEND(*cachelist, nsc, link);
nsc->primaryview = view;
}
dns_cache_attach(nsc->cache, &cache);
shared_cache = true;
}
} else if (strcmp(cachename, view->name) == 0) {
result = dns_viewlist_find(&named_g_server->viewlist, cachename,
view->rdclass, &pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
goto cleanup;
}
if (pview != NULL) {
if (!cache_reusable(pview, view, zero_no_soattl)) {
isc_log_write(named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
ISC_LOG_DEBUG(1),
"cache cannot be reused "
"for view %s due to "
"configuration parameter "
"mismatch",
view->name);
} else {
INSIST(pview->cache != NULL);
isc_log_write(named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
ISC_LOG_DEBUG(3),
"reusing existing cache");
dns_cache_attach(pview->cache, &cache);
}
dns_resolver_getstats(pview->resolver, &resstats);
dns_resolver_getquerystats(pview->resolver,
&resquerystats);
dns_view_detach(&pview);
}
}
if (nsc == NULL) {
/*
* Create a cache with the desired name. This normally
* equals the view name, but may also be a forward
* reference to a view that share the cache with this
* view but is not yet configured. If it is not the
* view name but not a forward reference either, then it
* is simply a named cache that is not shared.
*/
if (cache == NULL) {
CHECK(dns_cache_create(named_g_loopmgr, view->rdclass,
cachename, mctx, &cache));
}
nsc = isc_mem_get(mctx, sizeof(*nsc));
*nsc = (named_cache_t){
.primaryview = view,
.rdclass = view->rdclass,
.link = ISC_LINK_INITIALIZER,
};
dns_cache_attach(cache, &nsc->cache);
ISC_LIST_APPEND(*cachelist, nsc, link);
}
dns_view_setcache(view, cache, shared_cache);
dns_cache_setcachesize(cache, max_cache_size);
dns_cache_setservestalettl(cache, max_stale_ttl);
dns_cache_setservestalerefresh(cache, stale_refresh_time);
dns_cache_detach(&cache);
obj = NULL;
result = named_config_get(maps, "stale-answer-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
view->staleanswerttl = ISC_MAX(cfg_obj_asduration(obj), 1);
/*
* Resolver.
*/
CHECK(get_view_querysource_dispatch(
maps, AF_INET, &dispatch4,
(ISC_LIST_PREV(view, link) == NULL)));
CHECK(get_view_querysource_dispatch(
maps, AF_INET6, &dispatch6,
(ISC_LIST_PREV(view, link) == NULL)));
if (dispatch4 == NULL && dispatch6 == NULL) {
UNEXPECTED_ERROR("unable to obtain either an IPv4 or"
" an IPv6 dispatch");
result = ISC_R_UNEXPECTED;
goto cleanup;
}
CHECK(dns_view_createresolver(view, named_g_netmgr, resopts,
named_g_server->tlsctx_client_cache,
dispatch4, dispatch6));
if (resstats == NULL) {
isc_stats_create(mctx, &resstats, dns_resstatscounter_max);
}
dns_resolver_setstats(view->resolver, resstats);
if (resquerystats == NULL) {
dns_rdatatypestats_create(mctx, &resquerystats);
}
dns_resolver_setquerystats(view->resolver, resquerystats);
/*
* Set the ADB cache size to 1/8th of the max-cache-size or
* MAX_ADB_SIZE_FOR_CACHESHARE when the cache is shared.
*/
max_adb_size = 0;
if (max_cache_size != 0U) {
max_adb_size = max_cache_size / 8;
if (max_adb_size == 0U) {
max_adb_size = 1; /* Force minimum. */
}
if (view != nsc->primaryview &&
max_adb_size > MAX_ADB_SIZE_FOR_CACHESHARE)
{
max_adb_size = MAX_ADB_SIZE_FOR_CACHESHARE;
if (!nsc->adbsizeadjusted) {
dns_view_getadb(nsc->primaryview, &adb);
if (adb != NULL) {
dns_adb_setadbsize(
adb,
MAX_ADB_SIZE_FOR_CACHESHARE);
nsc->adbsizeadjusted = true;
dns_adb_detach(&adb);
}
}
}
}
dns_view_getadb(view, &adb);
if (adb != NULL) {
dns_adb_setadbsize(adb, max_adb_size);
dns_adb_detach(&adb);
}
/*
* Set up ADB quotas
*/
{
uint32_t fps, freq;
double low, high, discount;
obj = NULL;
result = named_config_get(maps, "fetches-per-server", &obj);
INSIST(result == ISC_R_SUCCESS);
obj2 = cfg_tuple_get(obj, "fetches");
fps = cfg_obj_asuint32(obj2);
obj2 = cfg_tuple_get(obj, "response");
if (!cfg_obj_isvoid(obj2)) {
const char *resp = cfg_obj_asstring(obj2);
isc_result_t r = DNS_R_SERVFAIL;
if (strcasecmp(resp, "drop") == 0) {
r = DNS_R_DROP;
} else if (strcasecmp(resp, "fail") == 0) {
r = DNS_R_SERVFAIL;
} else {
UNREACHABLE();
}
dns_resolver_setquotaresponse(view->resolver,
dns_quotatype_server, r);
}
obj = NULL;
result = named_config_get(maps, "fetch-quota-params", &obj);
INSIST(result == ISC_R_SUCCESS);
obj2 = cfg_tuple_get(obj, "frequency");
freq = cfg_obj_asuint32(obj2);
obj2 = cfg_tuple_get(obj, "low");
low = (double)cfg_obj_asfixedpoint(obj2) / 100.0;
obj2 = cfg_tuple_get(obj, "high");
high = (double)cfg_obj_asfixedpoint(obj2) / 100.0;
obj2 = cfg_tuple_get(obj, "discount");
discount = (double)cfg_obj_asfixedpoint(obj2) / 100.0;
dns_view_getadb(view, &adb);
if (adb != NULL) {
dns_adb_setquota(adb, fps, freq, low, high, discount);
dns_adb_detach(&adb);
}
}
/*
* Set resolver's lame-ttl.
*/
obj = NULL;
result = named_config_get(maps, "lame-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
lame_ttl = cfg_obj_asduration(obj);
if (lame_ttl > 0) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"disabling lame cache despite lame-ttl > 0 as it "
"may cause performance issues");
}
/*
* Set the resolver's query timeout.
*/
obj = NULL;
result = named_config_get(maps, "resolver-query-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
query_timeout = cfg_obj_asuint32(obj);
dns_resolver_settimeout(view->resolver, query_timeout);
/* Specify whether to use 0-TTL for negative response for SOA query */
dns_resolver_setzeronosoattl(view->resolver, zero_no_soattl);
/*
* Set the resolver's EDNS UDP size.
*/
obj = NULL;
result = named_config_get(maps, "edns-udp-size", &obj);
INSIST(result == ISC_R_SUCCESS);
udpsize = cfg_obj_asuint32(obj);
if (udpsize < 512) {
udpsize = 512;
}
if (udpsize > 4096) {
udpsize = 4096;
}
dns_view_setudpsize(view, (uint16_t)udpsize);
/*
* Set the maximum UDP response size.
*/
obj = NULL;
result = named_config_get(maps, "max-udp-size", &obj);
INSIST(result == ISC_R_SUCCESS);
udpsize = cfg_obj_asuint32(obj);
if (udpsize < 512) {
udpsize = 512;
}
if (udpsize > 4096) {
udpsize = 4096;
}
view->maxudp = udpsize;
/*
* Set the maximum UDP when a COOKIE is not provided.
*/
obj = NULL;
result = named_config_get(maps, "nocookie-udp-size", &obj);
INSIST(result == ISC_R_SUCCESS);
udpsize = cfg_obj_asuint32(obj);
if (udpsize < 128) {
udpsize = 128;
}
if (udpsize > view->maxudp) {
udpsize = view->maxudp;
}
view->nocookieudp = udpsize;
/*
* Set the maximum rsa exponent bits.
*/
obj = NULL;
result = named_config_get(maps, "max-rsa-exponent-size", &obj);
INSIST(result == ISC_R_SUCCESS);
maxbits = cfg_obj_asuint32(obj);
if (maxbits != 0 && maxbits < 35) {
maxbits = 35;
}
if (maxbits > 4096) {
maxbits = 4096;
}
view->maxbits = maxbits;
/*
* Set supported DNSSEC algorithms.
*/
disabled = NULL;
(void)named_config_get(maps, "disable-algorithms", &disabled);
if (disabled != NULL) {
for (element = cfg_list_first(disabled); element != NULL;
element = cfg_list_next(element))
{
CHECK(disable_algorithms(cfg_listelt_value(element),
view->resolver));
}
}
/*
* Set supported DS digest types.
*/
disabled = NULL;
(void)named_config_get(maps, "disable-ds-digests", &disabled);
if (disabled != NULL) {
for (element = cfg_list_first(disabled); element != NULL;
element = cfg_list_next(element))
{
CHECK(disable_ds_digests(cfg_listelt_value(element),
view->resolver));
}
}
/*
* A global or view "forwarders" option, if present,
* creates an entry for "." in the forwarding table.
*/
forwardtype = NULL;
forwarders = NULL;
(void)named_config_get(maps, "forward", &forwardtype);
(void)named_config_get(maps, "forwarders", &forwarders);
if (forwarders != NULL) {
CHECK(configure_forward(config, view, dns_rootname, forwarders,
forwardtype));
}
/*
* Dual Stack Servers.
*/
alternates = NULL;
(void)named_config_get(maps, "dual-stack-servers", &alternates);
if (alternates != NULL) {
CHECK(configure_alternates(config, view, alternates));
}
/*
* We have default hints for class IN if we need them.
*/
if (view->rdclass == dns_rdataclass_in && view->hints == NULL) {
dns_view_sethints(view, named_g_server->in_roothints);
}
/*
* If we still have no hints, this is a non-IN view with no
* "hints zone" configured. Issue a warning, except if this
* is a root server. Root servers never need to consult
* their hints, so it's no point requiring users to configure
* them.
*/
if (view->hints == NULL) {
dns_zone_t *rootzone = NULL;
(void)dns_view_findzone(view, dns_rootname, DNS_ZTFIND_EXACT,
&rootzone);
if (rootzone != NULL) {
dns_zone_detach(&rootzone);
need_hints = false;
}
if (need_hints) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"no root hints for view '%s'",
view->name);
}
}
/*
* Configure the view's transports (DoT/DoH)
*/
CHECK(named_transports_fromconfig(config, vconfig, view->mctx,
&transports));
dns_view_settransports(view, transports);
dns_transport_list_detach(&transports);
/*
* Configure SIG(0) check limits when matching a DNS message to a view.
*/
obj = NULL;
result = named_config_get(maps, "sig0key-checks-limit", &obj);
INSIST(result == ISC_R_SUCCESS);
view->sig0key_checks_limit = cfg_obj_asuint32(obj);
obj = NULL;
result = named_config_get(maps, "sig0message-checks-limit", &obj);
INSIST(result == ISC_R_SUCCESS);
view->sig0message_checks_limit = cfg_obj_asuint32(obj);
/*
* Configure the view's TSIG keys.
*/
CHECK(named_tsigkeyring_fromconfig(config, vconfig, view->mctx, &ring));
if (named_g_server->sessionkey != NULL) {
dns_tsigkey_t *tsigkey = NULL;
result = dns_tsigkey_createfromkey(
named_g_server->session_keyname,
named_g_server->session_keyalg,
named_g_server->sessionkey, false, false, NULL, 0, 0,
mctx, &tsigkey);
if (result == ISC_R_SUCCESS) {
result = dns_tsigkeyring_add(ring, tsigkey);
dns_tsigkey_detach(&tsigkey);
}
CHECK(result);
}
dns_view_setkeyring(view, ring);
dns_tsigkeyring_detach(&ring);
/*
* See if we can re-use a dynamic key ring.
*/
result = dns_viewlist_find(&named_g_server->viewlist, view->name,
view->rdclass, &pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
goto cleanup;
}
if (pview != NULL) {
dns_view_getdynamickeyring(pview, &ring);
if (ring != NULL) {
dns_view_setdynamickeyring(view, ring);
}
dns_tsigkeyring_detach(&ring);
dns_view_detach(&pview);
} else {
dns_view_restorekeyring(view);
}
/*
* Configure the view's peer list.
*/
{
const cfg_obj_t *peers = NULL;
dns_peerlist_t *newpeers = NULL;
(void)named_config_get(cfgmaps, "server", &peers);
CHECK(dns_peerlist_new(mctx, &newpeers));
for (element = cfg_list_first(peers); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *cpeer = cfg_listelt_value(element);
dns_peer_t *peer;
CHECK(configure_peer(cpeer, mctx, &peer));
dns_peerlist_addpeer(newpeers, peer);
dns_peer_detach(&peer);
}
dns_peerlist_detach(&view->peers);
view->peers = newpeers; /* Transfer ownership. */
}
/*
* Configure the views rrset-order.
*/
{
const cfg_obj_t *rrsetorder = NULL;
(void)named_config_get(maps, "rrset-order", &rrsetorder);
CHECK(dns_order_create(mctx, &order));
for (element = cfg_list_first(rrsetorder); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *ent = cfg_listelt_value(element);
CHECK(configure_order(order, ent));
}
if (view->order != NULL) {
dns_order_detach(&view->order);
}
dns_order_attach(order, &view->order);
dns_order_detach(&order);
}
/*
* Copy the aclenv object.
*/
dns_aclenv_copy(view->aclenv, ns_interfacemgr_getaclenv(
named_g_server->interfacemgr));
/*
* Configure the "match-clients" and "match-destinations" ACL.
* (These are only meaningful at the view level, but 'config'
* must be passed so that named ACLs defined at the global level
* can be retrieved.)
*/
CHECK(configure_view_acl(vconfig, config, NULL, "match-clients", NULL,
actx, named_g_mctx, &view->matchclients));
CHECK(configure_view_acl(vconfig, config, NULL, "match-destinations",
NULL, actx, named_g_mctx,
&view->matchdestinations));
/*
* Configure the "match-recursive-only" option.
*/
obj = NULL;
(void)named_config_get(maps, "match-recursive-only", &obj);
if (obj != NULL && cfg_obj_asboolean(obj)) {
view->matchrecursiveonly = true;
} else {
view->matchrecursiveonly = false;
}
/*
* Configure other configurable data.
*/
obj = NULL;
result = named_config_get(maps, "recursion", &obj);
INSIST(result == ISC_R_SUCCESS);
view->recursion = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "qname-minimization", &obj);
INSIST(result == ISC_R_SUCCESS);
qminmode = cfg_obj_asstring(obj);
INSIST(qminmode != NULL);
if (!strcmp(qminmode, "strict")) {
view->qminimization = true;
view->qmin_strict = true;
} else if (!strcmp(qminmode, "relaxed")) {
view->qminimization = true;
view->qmin_strict = false;
} else { /* "disabled" or "off" */
view->qminimization = false;
view->qmin_strict = false;
}
obj = NULL;
result = named_config_get(maps, "auth-nxdomain", &obj);
INSIST(result == ISC_R_SUCCESS);
view->auth_nxdomain = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "minimal-any", &obj);
INSIST(result == ISC_R_SUCCESS);
view->minimal_any = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "minimal-responses", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_isboolean(obj)) {
if (cfg_obj_asboolean(obj)) {
view->minimalresponses = dns_minimal_yes;
} else {
view->minimalresponses = dns_minimal_no;
}
} else {
str = cfg_obj_asstring(obj);
if (strcasecmp(str, "no-auth") == 0) {
view->minimalresponses = dns_minimal_noauth;
} else if (strcasecmp(str, "no-auth-recursive") == 0) {
view->minimalresponses = dns_minimal_noauthrec;
} else {
UNREACHABLE();
}
}
obj = NULL;
result = named_config_get(maps, "transfer-format", &obj);
INSIST(result == ISC_R_SUCCESS);
str = cfg_obj_asstring(obj);
if (strcasecmp(str, "many-answers") == 0) {
view->transfer_format = dns_many_answers;
} else if (strcasecmp(str, "one-answer") == 0) {
view->transfer_format = dns_one_answer;
} else {
UNREACHABLE();
}
obj = NULL;
result = named_config_get(maps, "trust-anchor-telemetry", &obj);
INSIST(result == ISC_R_SUCCESS);
view->trust_anchor_telemetry = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "root-key-sentinel", &obj);
INSIST(result == ISC_R_SUCCESS);
view->root_key_sentinel = cfg_obj_asboolean(obj);
/*
* Set the "allow-query", "allow-query-cache", "allow-recursion",
* "allow-recursion-on" and "allow-query-cache-on" ACLs if
* configured in named.conf, but NOT from the global defaults.
* This is done by leaving the third argument to configure_view_acl()
* NULL.
*
* We ignore the global defaults here because these ACLs
* can inherit from each other. If any are still unset after
* applying the inheritance rules, we'll look up the defaults at
* that time.
*/
/* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL, "allow-query", NULL,
actx, named_g_mctx, &view->queryacl));
/* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL, "allow-query-cache",
NULL, actx, named_g_mctx, &view->cacheacl));
/* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL, "allow-query-cache-on",
NULL, actx, named_g_mctx, &view->cacheonacl));
CHECK(configure_view_acl(vconfig, config, named_g_config, "allow-proxy",
NULL, actx, named_g_mctx, &view->proxyacl));
CHECK(configure_view_acl(vconfig, config, named_g_config,
"allow-proxy-on", NULL, actx, named_g_mctx,
&view->proxyonacl));
if (strcmp(view->name, "_bind") != 0 &&
view->rdclass != dns_rdataclass_chaos)
{
/* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL,
"allow-recursion", NULL, actx,
named_g_mctx, &view->recursionacl));
/* named.conf only */
CHECK(configure_view_acl(vconfig, config, NULL,
"allow-recursion-on", NULL, actx,
named_g_mctx, &view->recursiononacl));
}
if (view->recursion) {
/*
* "allow-query-cache" inherits from "allow-recursion" if set,
* otherwise from "allow-query" if set.
*/
if (view->cacheacl == NULL) {
if (view->recursionacl != NULL) {
dns_acl_attach(view->recursionacl,
&view->cacheacl);
} else if (view->queryacl != NULL) {
dns_acl_attach(view->queryacl, &view->cacheacl);
}
}
/*
* "allow-recursion" inherits from "allow-query-cache" if set,
* otherwise from "allow-query" if set.
*/
if (view->recursionacl == NULL) {
if (view->cacheacl != NULL) {
dns_acl_attach(view->cacheacl,
&view->recursionacl);
} else if (view->queryacl != NULL) {
dns_acl_attach(view->queryacl,
&view->recursionacl);
}
}
/*
* "allow-query-cache-on" inherits from "allow-recursion-on"
* if set.
*/
if (view->cacheonacl == NULL) {
if (view->recursiononacl != NULL) {
dns_acl_attach(view->recursiononacl,
&view->cacheonacl);
}
}
/*
* "allow-recursion-on" inherits from "allow-query-cache-on"
* if set.
*/
if (view->recursiononacl == NULL) {
if (view->cacheonacl != NULL) {
dns_acl_attach(view->cacheonacl,
&view->recursiononacl);
}
}
/*
* If any are still unset at this point, we now get default
* values for from the global config.
*/
if (view->recursionacl == NULL) {
/* global default only */
CHECK(configure_view_acl(
NULL, NULL, named_g_config, "allow-recursion",
NULL, actx, named_g_mctx, &view->recursionacl));
}
if (view->recursiononacl == NULL) {
/* global default only */
CHECK(configure_view_acl(NULL, NULL, named_g_config,
"allow-recursion-on", NULL,
actx, named_g_mctx,
&view->recursiononacl));
}
if (view->cacheacl == NULL) {
/* global default only */
CHECK(configure_view_acl(
NULL, NULL, named_g_config, "allow-query-cache",
NULL, actx, named_g_mctx, &view->cacheacl));
}
if (view->cacheonacl == NULL) {
/* global default only */
CHECK(configure_view_acl(NULL, NULL, named_g_config,
"allow-query-cache-on", NULL,
actx, named_g_mctx,
&view->cacheonacl));
}
} else {
/*
* We're not recursive; if the query-cache ACLs haven't
* been set at the options/view level, set them to none.
*/
if (view->cacheacl == NULL) {
CHECK(dns_acl_none(mctx, &view->cacheacl));
}
if (view->cacheonacl == NULL) {
CHECK(dns_acl_none(mctx, &view->cacheonacl));
}
}
/*
* Finished setting recursion and query-cache ACLs, so now we
* can get the allow-query default if it wasn't set in named.conf
*/
if (view->queryacl == NULL) {
/* global default only */
CHECK(configure_view_acl(NULL, NULL, named_g_config,
"allow-query", NULL, actx,
named_g_mctx, &view->queryacl));
}
/*
* Ignore case when compressing responses to the specified
* clients. This causes case not always to be preserved,
* and is needed by some broken clients.
*/
CHECK(configure_view_acl(vconfig, config, named_g_config,
"no-case-compress", NULL, actx, named_g_mctx,
&view->nocasecompress));
/*
* Disable name compression completely, this is a tradeoff
* between CPU and network usage.
*/
obj = NULL;
result = named_config_get(maps, "message-compression", &obj);
INSIST(result == ISC_R_SUCCESS);
view->msgcompression = cfg_obj_asboolean(obj);
/*
* Filter setting on addresses in the answer section.
*/
CHECK(configure_view_acl(vconfig, config, named_g_config,
"deny-answer-addresses", "acl", actx,
named_g_mctx, &view->denyansweracl));
CHECK(configure_view_nametable(vconfig, config, "deny-answer-addresses",
"except-from", named_g_mctx,
&view->answeracl_exclude));
/*
* Filter setting on names (CNAME/DNAME targets) in the answer section.
*/
CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases",
"name", named_g_mctx,
&view->denyanswernames));
CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases",
"except-from", named_g_mctx,
&view->answernames_exclude));
/*
* Configure sortlist, if set
*/
CHECK(configure_view_sortlist(vconfig, config, actx, named_g_mctx,
&view->sortlist));
/*
* Configure default allow-update and allow-update-forwarding ACLs,
* so they can be inherited by zones. (XXX: These are not
* read from the options/view level here. However, they may be
* read from there in zoneconf.c:configure_zone_acl() later.)
*/
if (view->updateacl == NULL) {
CHECK(configure_view_acl(NULL, NULL, named_g_config,
"allow-update", NULL, actx,
named_g_mctx, &view->updateacl));
}
if (view->upfwdacl == NULL) {
CHECK(configure_view_acl(NULL, NULL, named_g_config,
"allow-update-forwarding", NULL, actx,
named_g_mctx, &view->upfwdacl));
}
/*
* Configure default allow-transfer and allow-notify ACLs so they
* can be inherited by zones.
*/
if (view->transferacl == NULL) {
CHECK(configure_view_acl(vconfig, config, named_g_config,
"allow-transfer", NULL, actx,
named_g_mctx, &view->transferacl));
}
if (view->notifyacl == NULL) {
CHECK(configure_view_acl(vconfig, config, named_g_config,
"allow-notify", NULL, actx,
named_g_mctx, &view->notifyacl));
}
obj = NULL;
result = named_config_get(maps, "provide-ixfr", &obj);
INSIST(result == ISC_R_SUCCESS);
view->provideixfr = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "request-nsid", &obj);
INSIST(result == ISC_R_SUCCESS);
view->requestnsid = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "send-cookie", &obj);
INSIST(result == ISC_R_SUCCESS);
view->sendcookie = cfg_obj_asboolean(obj);
obj = NULL;
if (view->pad_acl != NULL) {
dns_acl_detach(&view->pad_acl);
}
result = named_config_get(optionmaps, "response-padding", &obj);
if (result == ISC_R_SUCCESS) {
const cfg_obj_t *padobj = cfg_tuple_get(obj, "block-size");
const cfg_obj_t *aclobj = cfg_tuple_get(obj, "acl");
uint32_t padding = cfg_obj_asuint32(padobj);
if (padding > 512U) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"response-padding block-size cannot "
"exceed 512: lowering");
padding = 512U;
}
view->padding = (uint16_t)padding;
CHECK(cfg_acl_fromconfig(aclobj, config, named_g_lctx, actx,
named_g_mctx, 0, &view->pad_acl));
}
obj = NULL;
result = named_config_get(maps, "require-server-cookie", &obj);
INSIST(result == ISC_R_SUCCESS);
view->requireservercookie = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "v6-bias", &obj);
INSIST(result == ISC_R_SUCCESS);
view->v6bias = cfg_obj_asuint32(obj) * 1000;
obj = NULL;
result = named_config_get(maps, "clients-per-query", &obj);
INSIST(result == ISC_R_SUCCESS);
clients_per_query = cfg_obj_asuint32(obj);
obj = NULL;
result = named_config_get(maps, "max-clients-per-query", &obj);
INSIST(result == ISC_R_SUCCESS);
max_clients_per_query = cfg_obj_asuint32(obj);
if (max_clients_per_query < clients_per_query) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"configured clients-per-query (%u) exceeds "
"max-clients-per-query (%u); automatically "
"adjusting max-clients-per-query to (%u)",
clients_per_query, max_clients_per_query,
clients_per_query);
max_clients_per_query = clients_per_query;
}
dns_resolver_setclientsperquery(view->resolver, clients_per_query,
max_clients_per_query);
/*
* This is used for the cache and also as a default value
* for zone databases.
*/
obj = NULL;
result = named_config_get(maps, "max-records-per-type", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_view_setmaxrrperset(view, cfg_obj_asuint32(obj));
/*
* This is used for the cache and also as a default value
* for zone databases.
*/
obj = NULL;
result = named_config_get(maps, "max-types-per-name", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_view_setmaxtypepername(view, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "max-recursion-depth", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_resolver_setmaxdepth(view->resolver, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "max-recursion-queries", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_resolver_setmaxqueries(view->resolver, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "max-query-restarts", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_view_setmaxrestarts(view, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "max-query-count", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_view_setmaxqueries(view, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "max-validations-per-fetch", &obj);
if (result == ISC_R_SUCCESS) {
dns_resolver_setmaxvalidations(view->resolver,
cfg_obj_asuint32(obj));
}
obj = NULL;
result = named_config_get(maps, "max-validation-failures-per-fetch",
&obj);
if (result == ISC_R_SUCCESS) {
dns_resolver_setmaxvalidationfails(view->resolver,
cfg_obj_asuint32(obj));
}
obj = NULL;
result = named_config_get(maps, "fetches-per-zone", &obj);
INSIST(result == ISC_R_SUCCESS);
obj2 = cfg_tuple_get(obj, "fetches");
dns_resolver_setfetchesperzone(view->resolver, cfg_obj_asuint32(obj2));
obj2 = cfg_tuple_get(obj, "response");
if (!cfg_obj_isvoid(obj2)) {
const char *resp = cfg_obj_asstring(obj2);
isc_result_t r = DNS_R_SERVFAIL;
if (strcasecmp(resp, "drop") == 0) {
r = DNS_R_DROP;
} else if (strcasecmp(resp, "fail") == 0) {
r = DNS_R_SERVFAIL;
} else {
UNREACHABLE();
}
dns_resolver_setquotaresponse(view->resolver,
dns_quotatype_zone, r);
}
obj = NULL;
result = named_config_get(maps, "prefetch", &obj);
INSIST(result == ISC_R_SUCCESS);
prefetch_trigger = cfg_tuple_get(obj, "trigger");
view->prefetch_trigger = cfg_obj_asuint32(prefetch_trigger);
if (view->prefetch_trigger > 10) {
view->prefetch_trigger = 10;
}
prefetch_eligible = cfg_tuple_get(obj, "eligible");
if (cfg_obj_isvoid(prefetch_eligible)) {
int m;
for (m = 1; maps[m] != NULL; m++) {
obj = NULL;
result = named_config_get(&maps[m], "prefetch", &obj);
INSIST(result == ISC_R_SUCCESS);
prefetch_eligible = cfg_tuple_get(obj, "eligible");
if (cfg_obj_isuint32(prefetch_eligible)) {
break;
}
}
INSIST(cfg_obj_isuint32(prefetch_eligible));
}
view->prefetch_eligible = cfg_obj_asuint32(prefetch_eligible);
if (view->prefetch_eligible < view->prefetch_trigger + 6) {
view->prefetch_eligible = view->prefetch_trigger + 6;
}
/*
* For now, there is only one kind of trusted keys, the
* "security roots".
*/
CHECK(configure_view_dnsseckeys(view, vconfig, config, bindkeys,
auto_root));
obj = NULL;
result = named_config_get(maps, "dnssec-must-be-secure", &obj);
if (result == ISC_R_SUCCESS) {
CHECK(mustbesecure(obj, view->resolver));
}
obj = NULL;
result = named_config_get(maps, "nta-recheck", &obj);
INSIST(result == ISC_R_SUCCESS);
view->nta_recheck = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "nta-lifetime", &obj);
INSIST(result == ISC_R_SUCCESS);
view->nta_lifetime = cfg_obj_asduration(obj);
obj = NULL;
result = named_config_get(maps, "preferred-glue", &obj);
if (result == ISC_R_SUCCESS) {
str = cfg_obj_asstring(obj);
if (strcasecmp(str, "a") == 0) {
view->preferred_glue = dns_rdatatype_a;
} else if (strcasecmp(str, "aaaa") == 0) {
view->preferred_glue = dns_rdatatype_aaaa;
} else {
view->preferred_glue = 0;
}
} else {
view->preferred_glue = 0;
}
/*
* Load DynDB modules.
*/
dyndb_list = NULL;
if (voptions != NULL) {
(void)cfg_map_get(voptions, "dyndb", &dyndb_list);
} else {
(void)cfg_map_get(config, "dyndb", &dyndb_list);
}
for (element = cfg_list_first(dyndb_list); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *dyndb = cfg_listelt_value(element);
if (dctx == NULL) {
const void *hashinit = isc_hash_get_initializer();
CHECK(dns_dyndb_createctx(mctx, hashinit, named_g_lctx,
view, named_g_server->zonemgr,
named_g_loopmgr, &dctx));
}
CHECK(configure_dyndb(dyndb, mctx, dctx));
}
/*
* Load plugins.
*/
plugin_list = NULL;
if (voptions != NULL) {
(void)cfg_map_get(voptions, "plugin", &plugin_list);
} else {
(void)cfg_map_get(config, "plugin", &plugin_list);
}
if (plugin_list != NULL) {
INSIST(view->hooktable == NULL);
CHECK(ns_hooktable_create(view->mctx,
(ns_hooktable_t **)&view->hooktable));
view->hooktable_free = ns_hooktable_free;
ns_plugins_create(view->mctx, (ns_plugins_t **)&view->plugins);
view->plugins_free = ns_plugins_free;
CHECK(cfg_pluginlist_foreach(config, plugin_list, named_g_lctx,
register_one_plugin, view));
}
/*
* Setup automatic empty zones. If recursion is off then
* they are disabled by default.
*/
obj = NULL;
(void)named_config_get(maps, "empty-zones-enable", &obj);
(void)named_config_get(maps, "disable-empty-zone", &disablelist);
if (obj == NULL && disablelist == NULL &&
view->rdclass == dns_rdataclass_in)
{
empty_zones_enable = view->recursion;
} else if (view->rdclass == dns_rdataclass_in) {
if (obj != NULL) {
empty_zones_enable = cfg_obj_asboolean(obj);
} else {
empty_zones_enable = view->recursion;
}
} else {
empty_zones_enable = false;
}
if (empty_zones_enable) {
const char *empty;
int empty_zone = 0;
dns_fixedname_t fixed;
dns_name_t *name;
isc_buffer_t buffer;
char server[DNS_NAME_FORMATSIZE + 1];
char contact[DNS_NAME_FORMATSIZE + 1];
const char *empty_dbtype[4] = { "_builtin", "empty", NULL,
NULL };
int empty_dbtypec = 4;
dns_zonestat_level_t statlevel = dns_zonestat_none;
name = dns_fixedname_initname(&fixed);
obj = NULL;
result = named_config_get(maps, "empty-server", &obj);
if (result == ISC_R_SUCCESS) {
CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj),
dns_rootname, 0, NULL));
isc_buffer_init(&buffer, server, sizeof(server) - 1);
CHECK(dns_name_totext(name, 0, &buffer));
server[isc_buffer_usedlength(&buffer)] = 0;
empty_dbtype[2] = server;
} else {
empty_dbtype[2] = "@";
}
obj = NULL;
result = named_config_get(maps, "empty-contact", &obj);
if (result == ISC_R_SUCCESS) {
CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj),
dns_rootname, 0, NULL));
isc_buffer_init(&buffer, contact, sizeof(contact) - 1);
CHECK(dns_name_totext(name, 0, &buffer));
contact[isc_buffer_usedlength(&buffer)] = 0;
empty_dbtype[3] = contact;
} else {
empty_dbtype[3] = ".";
}
obj = NULL;
result = named_config_get(maps, "zone-statistics", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_isboolean(obj)) {
if (cfg_obj_asboolean(obj)) {
statlevel = dns_zonestat_full;
} else {
statlevel = dns_zonestat_none;
}
} else {
const char *levelstr = cfg_obj_asstring(obj);
if (strcasecmp(levelstr, "full") == 0) {
statlevel = dns_zonestat_full;
} else if (strcasecmp(levelstr, "terse") == 0) {
statlevel = dns_zonestat_terse;
} else if (strcasecmp(levelstr, "none") == 0) {
statlevel = dns_zonestat_none;
} else {
UNREACHABLE();
}
}
for (empty = empty_zones[empty_zone]; empty != NULL;
empty = empty_zones[++empty_zone])
{
dns_forwarders_t *dnsforwarders = NULL;
dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
/*
* Look for zone on drop list.
*/
CHECK(dns_name_fromstring(name, empty, dns_rootname, 0,
NULL));
if (disablelist != NULL &&
on_disable_list(disablelist, name))
{
continue;
}
/*
* This zone already exists.
*/
(void)dns_view_findzone(view, name, DNS_ZTFIND_EXACT,
&zone);
if (zone != NULL) {
dns_zone_detach(&zone);
continue;
}
/*
* If we would forward this name don't add a
* empty zone for it.
*/
result = dns_fwdtable_find(view->fwdtable, name,
&dnsforwarders);
if (result == ISC_R_SUCCESS ||
result == DNS_R_PARTIALMATCH)
{
fwdpolicy = dnsforwarders->fwdpolicy;
dns_forwarders_detach(&dnsforwarders);
}
if (fwdpolicy == dns_fwdpolicy_only) {
continue;
}
/*
* See if we can re-use a existing zone.
*/
result = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass,
&pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
{
goto cleanup;
}
if (pview != NULL) {
(void)dns_view_findzone(
pview, name, DNS_ZTFIND_EXACT, &zone);
dns_view_detach(&pview);
}
CHECK(create_empty_zone(zone, name, view, zonelist,
empty_dbtype, empty_dbtypec,
statlevel));
if (zone != NULL) {
dns_zone_detach(&zone);
}
}
}
obj = NULL;
if (view->rdclass == dns_rdataclass_in) {
(void)named_config_get(maps, "ipv4only-enable", &obj);
}
if (view->rdclass == dns_rdataclass_in && (obj != NULL)
? cfg_obj_asboolean(obj)
: !ISC_LIST_EMPTY(view->dns64))
{
const char *server, *contact;
dns_fixedname_t fixed;
dns_name_t *name;
struct {
const char *name;
const char *type;
} zones[] = {
{ "ipv4only.arpa", "ipv4only" },
{ "170.0.0.192.in-addr.arpa", "ipv4reverse" },
{ "171.0.0.192.in-addr.arpa", "ipv4reverse" },
};
size_t ipv4only_zone;
obj = NULL;
result = named_config_get(maps, "ipv4only-server", &obj);
if (result == ISC_R_SUCCESS) {
server = cfg_obj_asstring(obj);
} else {
server = NULL;
}
obj = NULL;
result = named_config_get(maps, "ipv4only-contact", &obj);
if (result == ISC_R_SUCCESS) {
contact = cfg_obj_asstring(obj);
} else {
contact = NULL;
}
name = dns_fixedname_initname(&fixed);
for (ipv4only_zone = 0; ipv4only_zone < ARRAY_SIZE(zones);
ipv4only_zone++)
{
dns_forwarders_t *dnsforwarders = NULL;
dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
CHECK(dns_name_fromstring(name,
zones[ipv4only_zone].name,
dns_rootname, 0, NULL));
(void)dns_view_findzone(view, name, DNS_ZTFIND_EXACT,
&zone);
if (zone != NULL) {
dns_zone_detach(&zone);
continue;
}
/*
* If we would forward this name don't add it.
*/
result = dns_fwdtable_find(view->fwdtable, name,
&dnsforwarders);
if (result == ISC_R_SUCCESS ||
result == DNS_R_PARTIALMATCH)
{
fwdpolicy = dnsforwarders->fwdpolicy;
dns_forwarders_detach(&dnsforwarders);
}
if (fwdpolicy == dns_fwdpolicy_only) {
continue;
}
/*
* See if we can re-use a existing zone.
*/
result = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass,
&pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
{
goto cleanup;
}
if (pview != NULL) {
(void)dns_view_findzone(
pview, name, DNS_ZTFIND_EXACT, &zone);
dns_view_detach(&pview);
}
CHECK(create_ipv4only_zone(zone, view, name,
zones[ipv4only_zone].type,
mctx, server, contact));
if (zone != NULL) {
dns_zone_detach(&zone);
}
}
}
obj = NULL;
result = named_config_get(maps, "rate-limit", &obj);
if (result == ISC_R_SUCCESS) {
result = configure_rrl(view, config, obj);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
/*
* Set the servfail-ttl.
*/
obj = NULL;
result = named_config_get(maps, "servfail-ttl", &obj);
INSIST(result == ISC_R_SUCCESS);
fail_ttl = cfg_obj_asduration(obj);
if (fail_ttl > 30) {
fail_ttl = 30;
}
dns_view_setfailttl(view, fail_ttl);
/*
* Name space to look up redirect information in.
*/
obj = NULL;
result = named_config_get(maps, "nxdomain-redirect", &obj);
if (result == ISC_R_SUCCESS) {
dns_name_t *name = dns_fixedname_name(&view->redirectfixed);
CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj),
dns_rootname, 0, NULL));
view->redirectzone = name;
} else {
view->redirectzone = NULL;
}
/*
* Exceptions to DNSSEC validation.
*/
obj = NULL;
result = named_config_get(maps, "validate-except", &obj);
if (result == ISC_R_SUCCESS) {
result = dns_view_getntatable(view, &ntatable);
}
if (result == ISC_R_SUCCESS) {
for (element = cfg_list_first(obj); element != NULL;
element = cfg_list_next(element))
{
dns_fixedname_t fntaname;
dns_name_t *ntaname;
ntaname = dns_fixedname_initname(&fntaname);
obj = cfg_listelt_value(element);
CHECK(dns_name_fromstring(ntaname,
cfg_obj_asstring(obj),
dns_rootname, 0, NULL));
CHECK(dns_ntatable_add(ntatable, ntaname, true, 0,
0xffffffffU));
}
}
#ifdef HAVE_DNSTAP
/*
* Set up the dnstap environment and configure message
* types to log.
*/
CHECK(configure_dnstap(maps, view));
#endif /* HAVE_DNSTAP */
result = ISC_R_SUCCESS;
cleanup:
/*
* Revert to the old view if there was an error.
*/
if (result != ISC_R_SUCCESS) {
isc_result_t result2;
result2 = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass, &pview);
if (result2 == ISC_R_SUCCESS) {
dns_view_thaw(pview);
obj = NULL;
if (rpz_configured &&
pview->rdclass == dns_rdataclass_in && need_hints &&
named_config_get(maps, "response-policy", &obj) ==
ISC_R_SUCCESS)
{
/*
* We are swapping the places of the `view` and
* `pview` in the function's parameters list
* because we are reverting the same operation
* done previously in the "correct" order.
*/
result2 = configure_rpz(pview, view, maps, obj,
&old_rpz_ok);
if (result2 != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
ISC_LOG_ERROR,
"rpz configuration "
"revert failed for view "
"'%s'",
pview->name);
}
}
obj = NULL;
if (catz_configured &&
pview->rdclass == dns_rdataclass_in && need_hints &&
named_config_get(maps, "catalog-zones", &obj) ==
ISC_R_SUCCESS)
{
/*
* We are swapping the places of the `view` and
* `pview` in the function's parameters list
* because we are reverting the same operation
* done previously in the "correct" order.
*/
result2 = configure_catz(pview, view, config,
obj);
if (result2 != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
ISC_LOG_ERROR,
"catz configuration "
"revert failed for view "
"'%s'",
pview->name);
}
}
dns_view_freeze(pview);
}
if (pview != NULL) {
dns_view_detach(&pview);
}
if (zone_element_latest != NULL) {
for (element = cfg_list_first(zonelist);
element != NULL; element = cfg_list_next(element))
{
const cfg_obj_t *zconfig =
cfg_listelt_value(element);
configure_zone_setviewcommit(result, zconfig,
view);
if (element == zone_element_latest) {
/*
* This was the latest element that was
* successfully configured earlier.
*/
break;
}
}
}
}
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
if (clients != NULL) {
dns_acl_detach(&clients);
}
if (mapped != NULL) {
dns_acl_detach(&mapped);
}
if (excluded != NULL) {
dns_acl_detach(&excluded);
}
if (ring != NULL) {
dns_tsigkeyring_detach(&ring);
}
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (dispatch4 != NULL) {
dns_dispatch_detach(&dispatch4);
}
if (dispatch6 != NULL) {
dns_dispatch_detach(&dispatch6);
}
if (resstats != NULL) {
isc_stats_detach(&resstats);
}
if (resquerystats != NULL) {
dns_stats_detach(&resquerystats);
}
if (order != NULL) {
dns_order_detach(&order);
}
if (cache != NULL) {
dns_cache_detach(&cache);
}
if (dctx != NULL) {
dns_dyndb_destroyctx(&dctx);
}
return result;
}
static isc_result_t
configure_hints(dns_view_t *view, const char *filename) {
isc_result_t result;
dns_db_t *db;
db = NULL;
result = dns_rootns_create(view->mctx, view->rdclass, filename, &db);
if (result == ISC_R_SUCCESS) {
dns_view_sethints(view, db);
dns_db_detach(&db);
}
return result;
}
static isc_result_t
configure_alternates(const cfg_obj_t *config, dns_view_t *view,
const cfg_obj_t *alternates) {
const cfg_obj_t *portobj;
const cfg_obj_t *addresses;
const cfg_listelt_t *element;
isc_result_t result = ISC_R_SUCCESS;
in_port_t port;
/*
* Determine which port to send requests to.
*/
CHECKM(named_config_getport(config, "port", &port), "port");
if (alternates != NULL) {
portobj = cfg_tuple_get(alternates, "port");
if (cfg_obj_isuint32(portobj)) {
uint32_t val = cfg_obj_asuint32(portobj);
if (val > UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx,
ISC_LOG_ERROR,
"port '%u' out of range", val);
return ISC_R_RANGE;
}
port = (in_port_t)val;
}
}
addresses = NULL;
if (alternates != NULL) {
addresses = cfg_tuple_get(alternates, "addresses");
}
for (element = cfg_list_first(addresses); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *alternate = cfg_listelt_value(element);
isc_sockaddr_t sa;
if (!cfg_obj_issockaddr(alternate)) {
dns_fixedname_t fixed;
dns_name_t *name;
const char *str = cfg_obj_asstring(
cfg_tuple_get(alternate, "name"));
isc_buffer_t buffer;
in_port_t myport = port;
isc_buffer_constinit(&buffer, str, strlen(str));
isc_buffer_add(&buffer, strlen(str));
name = dns_fixedname_initname(&fixed);
CHECK(dns_name_fromtext(name, &buffer, dns_rootname, 0,
NULL));
portobj = cfg_tuple_get(alternate, "port");
if (cfg_obj_isuint32(portobj)) {
uint32_t val = cfg_obj_asuint32(portobj);
if (val > UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx,
ISC_LOG_ERROR,
"port '%u' out of range",
val);
return ISC_R_RANGE;
}
myport = (in_port_t)val;
}
dns_resolver_addalternate(view->resolver, NULL, name,
myport);
continue;
}
sa = *cfg_obj_assockaddr(alternate);
if (isc_sockaddr_getport(&sa) == 0) {
isc_sockaddr_setport(&sa, port);
}
dns_resolver_addalternate(view->resolver, &sa, NULL, 0);
}
cleanup:
return result;
}
static isc_result_t
validate_tls(const cfg_obj_t *config, dns_view_t *view, const cfg_obj_t *obj,
isc_log_t *logctx, const char *str, dns_name_t **name) {
dns_fixedname_t fname;
dns_name_t *nm = dns_fixedname_initname(&fname);
isc_result_t result = dns_name_fromstring(nm, str, dns_rootname, 0,
NULL);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
"'%s' is not a valid name", str);
return result;
}
if (strcasecmp(str, "ephemeral") != 0) {
const cfg_obj_t *tlsmap = find_maplist(config, "tls", str);
if (tlsmap == NULL) {
cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
"tls '%s' is not defined", str);
return ISC_R_FAILURE;
}
}
if (name != NULL && *name == NULL) {
*name = isc_mem_get(view->mctx, sizeof(dns_name_t));
dns_name_init(*name, NULL);
dns_name_dup(nm, view->mctx, *name);
}
return ISC_R_SUCCESS;
}
static isc_result_t
configure_forward(const cfg_obj_t *config, dns_view_t *view,
const dns_name_t *origin, const cfg_obj_t *forwarders,
const cfg_obj_t *forwardtype) {
const cfg_obj_t *portobj = NULL;
const cfg_obj_t *tlspobj = NULL;
const cfg_obj_t *faddresses = NULL;
const cfg_listelt_t *element = NULL;
dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none;
dns_forwarderlist_t fwdlist;
dns_forwarder_t *fwd = NULL;
isc_result_t result;
in_port_t port;
in_port_t tls_port;
const char *tls = NULL;
ISC_LIST_INIT(fwdlist);
/*
* Determine which port to send forwarded requests to.
*/
CHECKM(named_config_getport(config, "port", &port), "port");
CHECKM(named_config_getport(config, "tls-port", &tls_port), "tls-port");
if (forwarders != NULL) {
portobj = cfg_tuple_get(forwarders, "port");
if (cfg_obj_isuint32(portobj)) {
uint32_t val = cfg_obj_asuint32(portobj);
if (val > UINT16_MAX) {
cfg_obj_log(portobj, named_g_lctx,
ISC_LOG_ERROR,
"port '%u' out of range", val);
return ISC_R_RANGE;
}
port = tls_port = (in_port_t)val;
}
}
/*
* TLS value for forwarded requests.
*/
if (forwarders != NULL) {
tlspobj = cfg_tuple_get(forwarders, "tls");
if (cfg_obj_isstring(tlspobj)) {
tls = cfg_obj_asstring(tlspobj);
if (tls != NULL) {
result = validate_tls(config, view, tlspobj,
named_g_lctx, tls, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
}
}
}
faddresses = NULL;
if (forwarders != NULL) {
faddresses = cfg_tuple_get(forwarders, "addresses");
}
for (element = cfg_list_first(faddresses); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *forwarder = cfg_listelt_value(element);
const char *cur_tls = NULL;
fwd = isc_mem_get(view->mctx, sizeof(dns_forwarder_t));
fwd->tlsname = NULL;
cur_tls = cfg_obj_getsockaddrtls(forwarder);
if (cur_tls == NULL) {
cur_tls = tls;
}
if (cur_tls != NULL) {
result = validate_tls(config, view, faddresses,
named_g_lctx, cur_tls,
&fwd->tlsname);
if (result != ISC_R_SUCCESS) {
isc_mem_put(view->mctx, fwd,
sizeof(dns_forwarder_t));
goto cleanup;
}
}
fwd->addr = *cfg_obj_assockaddr(forwarder);
if (isc_sockaddr_getport(&fwd->addr) == 0) {
isc_sockaddr_setport(&fwd->addr,
cur_tls != NULL ? tls_port : port);
}
ISC_LINK_INIT(fwd, link);
ISC_LIST_APPEND(fwdlist, fwd, link);
}
if (ISC_LIST_EMPTY(fwdlist)) {
if (forwardtype != NULL) {
cfg_obj_log(forwardtype, named_g_lctx, ISC_LOG_WARNING,
"no forwarders seen; disabling "
"forwarding");
}
fwdpolicy = dns_fwdpolicy_none;
} else {
if (forwardtype == NULL) {
fwdpolicy = dns_fwdpolicy_first;
} else {
const char *forwardstr = cfg_obj_asstring(forwardtype);
if (strcasecmp(forwardstr, "first") == 0) {
fwdpolicy = dns_fwdpolicy_first;
} else if (strcasecmp(forwardstr, "only") == 0) {
fwdpolicy = dns_fwdpolicy_only;
} else {
UNREACHABLE();
}
}
}
result = dns_fwdtable_addfwd(view->fwdtable, origin, &fwdlist,
fwdpolicy);
if (result != ISC_R_SUCCESS) {
char namebuf[DNS_NAME_FORMATSIZE];
dns_name_format(origin, namebuf, sizeof(namebuf));
cfg_obj_log(forwarders, named_g_lctx, ISC_LOG_WARNING,
"could not set up forwarding for domain '%s': %s",
namebuf, isc_result_totext(result));
goto cleanup;
}
if (fwdpolicy == dns_fwdpolicy_only) {
dns_view_sfd_add(view, origin);
}
result = ISC_R_SUCCESS;
cleanup:
while (!ISC_LIST_EMPTY(fwdlist)) {
fwd = ISC_LIST_HEAD(fwdlist);
ISC_LIST_UNLINK(fwdlist, fwd, link);
if (fwd->tlsname != NULL) {
dns_name_free(fwd->tlsname, view->mctx);
isc_mem_put(view->mctx, fwd->tlsname,
sizeof(dns_name_t));
}
isc_mem_put(view->mctx, fwd, sizeof(dns_forwarder_t));
}
return result;
}
static isc_result_t
get_viewinfo(const cfg_obj_t *vconfig, const char **namep,
dns_rdataclass_t *classp) {
isc_result_t result = ISC_R_SUCCESS;
const char *viewname;
dns_rdataclass_t viewclass;
REQUIRE(namep != NULL && *namep == NULL);
REQUIRE(classp != NULL);
if (vconfig != NULL) {
const cfg_obj_t *classobj = NULL;
viewname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name"));
classobj = cfg_tuple_get(vconfig, "class");
CHECK(named_config_getclass(classobj, dns_rdataclass_in,
&viewclass));
if (dns_rdataclass_ismeta(viewclass)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"view '%s': class must not be meta",
viewname);
CHECK(ISC_R_FAILURE);
}
} else {
viewname = "_default";
viewclass = dns_rdataclass_in;
}
*namep = viewname;
*classp = viewclass;
cleanup:
return result;
}
/*
* Find a view based on its configuration info and attach to it.
*
* If 'vconfig' is NULL, attach to the default view.
*/
static isc_result_t
find_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
dns_view_t **viewp) {
isc_result_t result;
const char *viewname = NULL;
dns_rdataclass_t viewclass;
dns_view_t *view = NULL;
result = get_viewinfo(vconfig, &viewname, &viewclass);
if (result != ISC_R_SUCCESS) {
return result;
}
result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
if (result != ISC_R_SUCCESS) {
return result;
}
*viewp = view;
return ISC_R_SUCCESS;
}
/*
* Create a new view and add it to the list.
*
* If 'vconfig' is NULL, create the default view.
*
* The view created is attached to '*viewp'.
*/
static isc_result_t
create_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist,
dns_view_t **viewp) {
isc_result_t result;
const char *viewname = NULL;
dns_rdataclass_t viewclass;
dns_view_t *view = NULL;
result = get_viewinfo(vconfig, &viewname, &viewclass);
if (result != ISC_R_SUCCESS) {
return result;
}
result = dns_viewlist_find(viewlist, viewname, viewclass, &view);
if (result == ISC_R_SUCCESS) {
return ISC_R_EXISTS;
}
if (result != ISC_R_NOTFOUND) {
return result;
}
INSIST(view == NULL);
result = dns_view_create(named_g_mctx, named_g_loopmgr,
named_g_dispatchmgr, viewclass, viewname,
&view);
if (result != ISC_R_SUCCESS) {
return result;
}
isc_nonce_buf(view->secret, sizeof(view->secret));
ISC_LIST_APPEND(*viewlist, view, link);
dns_view_attach(view, viewp);
return ISC_R_SUCCESS;
}
/*
* Configure or reconfigure a zone.
*/
static isc_result_t
configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
const cfg_obj_t *vconfig, dns_view_t *view,
dns_viewlist_t *viewlist, dns_kasplist_t *kasplist,
dns_keystorelist_t *keystores, cfg_aclconfctx_t *aclconf,
bool added, bool old_rpz_ok, bool is_catz_member, bool modify) {
dns_view_t *pview = NULL; /* Production view */
dns_zone_t *zone = NULL; /* New or reused zone */
dns_zone_t *raw = NULL; /* New or reused raw zone */
dns_zone_t *dupzone = NULL;
const cfg_obj_t *options = NULL;
const cfg_obj_t *zoptions = NULL;
const cfg_obj_t *typeobj = NULL;
const cfg_obj_t *forwarders = NULL;
const cfg_obj_t *forwardtype = NULL;
const cfg_obj_t *ixfrfromdiffs = NULL;
const cfg_obj_t *viewobj = NULL;
isc_result_t result = ISC_R_SUCCESS;
isc_result_t tresult;
isc_buffer_t buffer;
dns_fixedname_t fixorigin;
dns_name_t *origin;
const char *zname;
dns_rdataclass_t zclass;
const char *ztypestr;
dns_rpz_num_t rpz_num;
bool zone_is_catz = false;
bool zone_maybe_inline = false;
bool inline_signing = false;
bool fullsign = false;
options = NULL;
(void)cfg_map_get(config, "options", &options);
zoptions = cfg_tuple_get(zconfig, "options");
/*
* Get the zone origin as a dns_name_t.
*/
zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
isc_buffer_constinit(&buffer, zname, strlen(zname));
isc_buffer_add(&buffer, strlen(zname));
dns_fixedname_init(&fixorigin);
CHECK(dns_name_fromtext(dns_fixedname_name(&fixorigin), &buffer,
dns_rootname, 0, NULL));
origin = dns_fixedname_name(&fixorigin);
CHECK(named_config_getclass(cfg_tuple_get(zconfig, "class"),
view->rdclass, &zclass));
if (zclass != view->rdclass) {
const char *vname = NULL;
if (vconfig != NULL) {
vname = cfg_obj_asstring(
cfg_tuple_get(vconfig, "name"));
} else {
vname = "<default view>";
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"zone '%s': wrong class for view '%s'", zname,
vname);
result = ISC_R_FAILURE;
goto cleanup;
}
(void)cfg_map_get(zoptions, "in-view", &viewobj);
if (viewobj != NULL) {
const char *inview = cfg_obj_asstring(viewobj);
dns_view_t *otherview = NULL;
if (viewlist == NULL) {
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"'in-view' option is not permitted in "
"dynamically added zones");
result = ISC_R_FAILURE;
goto cleanup;
}
result = dns_viewlist_find(viewlist, inview, view->rdclass,
&otherview);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"view '%s' is not yet defined.", inview);
result = ISC_R_FAILURE;
goto cleanup;
}
result = dns_view_findzone(otherview, origin, DNS_ZTFIND_EXACT,
&zone);
dns_view_detach(&otherview);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"zone '%s' not defined in view '%s'", zname,
inview);
result = ISC_R_FAILURE;
goto cleanup;
}
CHECK(dns_view_addzone(view, zone));
dns_zone_detach(&zone);
/*
* If the zone contains a 'forwarders' statement, configure
* selective forwarding. Note: this is not inherited from the
* other view.
*/
forwarders = NULL;
result = cfg_map_get(zoptions, "forwarders", &forwarders);
if (result == ISC_R_SUCCESS) {
forwardtype = NULL;
(void)cfg_map_get(zoptions, "forward", &forwardtype);
CHECK(configure_forward(config, view, origin,
forwarders, forwardtype));
}
result = ISC_R_SUCCESS;
goto cleanup;
}
(void)cfg_map_get(zoptions, "type", &typeobj);
if (typeobj == NULL) {
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"zone '%s' 'type' not specified", zname);
result = ISC_R_FAILURE;
goto cleanup;
}
ztypestr = cfg_obj_asstring(typeobj);
/*
* "hints zones" aren't zones. If we've got one,
* configure it and return.
*/
if (strcasecmp(ztypestr, "hint") == 0) {
const cfg_obj_t *fileobj = NULL;
if (cfg_map_get(zoptions, "file", &fileobj) != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"zone '%s': 'file' not specified", zname);
result = ISC_R_FAILURE;
goto cleanup;
}
if (dns_name_equal(origin, dns_rootname)) {
const char *hintsfile = cfg_obj_asstring(fileobj);
CHECK(configure_hints(view, hintsfile));
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"ignoring non-root hint zone '%s'",
zname);
result = ISC_R_SUCCESS;
}
/* Skip ordinary zone processing. */
goto cleanup;
}
/*
* "forward zones" aren't zones either. Translate this syntax into
* the appropriate selective forwarding configuration and return.
*/
if (strcasecmp(ztypestr, "forward") == 0) {
forwardtype = NULL;
forwarders = NULL;
(void)cfg_map_get(zoptions, "forward", &forwardtype);
(void)cfg_map_get(zoptions, "forwarders", &forwarders);
CHECK(configure_forward(config, view, origin, forwarders,
forwardtype));
goto cleanup;
}
/*
* Redirect zones only require minimal configuration.
*/
if (strcasecmp(ztypestr, "redirect") == 0) {
if (view->redirect != NULL) {
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"redirect zone already exists");
result = ISC_R_EXISTS;
goto cleanup;
}
result = dns_viewlist_find(viewlist, view->name, view->rdclass,
&pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
goto cleanup;
}
if (pview != NULL && pview->redirect != NULL) {
dns_zone_attach(pview->redirect, &zone);
dns_zone_setview(zone, view);
} else {
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr,
&zone));
CHECK(dns_zone_setorigin(zone, origin));
dns_zone_setview(zone, view);
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr,
zone));
dns_zone_setstats(zone, named_g_server->zonestats);
}
CHECK(named_zone_configure(config, vconfig, zconfig, aclconf,
kasplist, keystores, zone, NULL));
dns_zone_attach(zone, &view->redirect);
goto cleanup;
}
if (!modify) {
/*
* Check for duplicates in the new zone table.
*/
result = dns_view_findzone(view, origin, DNS_ZTFIND_EXACT,
&dupzone);
if (result == ISC_R_SUCCESS) {
/*
* We already have this zone!
*/
cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR,
"zone '%s' already exists", zname);
dns_zone_detach(&dupzone);
result = ISC_R_EXISTS;
goto cleanup;
}
INSIST(dupzone == NULL);
}
/*
* Note whether this is a response policy zone and which one if so,
* unless we are using RPZ service interface. In that case, the
* BIND zone database has nothing to do with rpz and so we don't care.
*/
for (rpz_num = 0;; ++rpz_num) {
if (view->rpzs == NULL || rpz_num >= view->rpzs->p.num_zones ||
view->rpzs->p.dnsrps_enabled)
{
rpz_num = DNS_RPZ_INVALID_NUM;
break;
}
if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin, origin))
{
break;
}
}
if (!is_catz_member && view->catzs != NULL &&
dns_catz_zone_get(view->catzs, origin) != NULL)
{
zone_is_catz = true;
}
/*
* See if we can reuse an existing zone. This is
* only possible if all of these are true:
* - The zone's view exists
* - A zone with the right name exists in the view
* - The zone is compatible with the config
* options (e.g., an existing primary zone cannot
* be reused if the options specify a secondary zone)
* - The zone was not and is still not a response policy zone
* or the zone is a policy zone with an unchanged number
* and we are using the old policy zone summary data.
*/
result = dns_viewlist_find(&named_g_server->viewlist, view->name,
view->rdclass, &pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
goto cleanup;
}
if (pview != NULL) {
result = dns_view_findzone(pview, origin, DNS_ZTFIND_EXACT,
&zone);
}
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
goto cleanup;
}
if (zone != NULL &&
!named_zone_reusable(zone, zconfig, vconfig, config, kasplist))
{
dns_zone_detach(&zone);
fullsign = true;
}
if (zone != NULL && (rpz_num != dns_zone_get_rpz_num(zone) ||
(rpz_num != DNS_RPZ_INVALID_NUM && !old_rpz_ok)))
{
dns_zone_detach(&zone);
}
if (zone != NULL) {
/*
* We found a reusable zone. Make it use the
* new view.
*/
dns_zone_setview(zone, view);
} else {
/*
* We cannot reuse an existing zone, we have
* to create a new one.
*/
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone));
CHECK(dns_zone_setorigin(zone, origin));
dns_zone_setview(zone, view);
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
dns_zone_setstats(zone, named_g_server->zonestats);
}
if (rpz_num != DNS_RPZ_INVALID_NUM) {
result = dns_zone_rpz_enable(zone, view->rpzs, rpz_num);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"zone '%s': incompatible"
" masterfile-format or database"
" for a response policy zone",
zname);
goto cleanup;
}
}
if (zone_is_catz) {
dns_zone_catz_enable(zone, view->catzs);
} else if (dns_zone_catz_is_enabled(zone)) {
dns_zone_catz_disable(zone);
}
/*
* If the zone contains a 'forwarders' statement, configure
* selective forwarding.
*/
forwarders = NULL;
if (cfg_map_get(zoptions, "forwarders", &forwarders) == ISC_R_SUCCESS) {
forwardtype = NULL;
(void)cfg_map_get(zoptions, "forward", &forwardtype);
CHECK(configure_forward(config, view, origin, forwarders,
forwardtype));
}
/*
* Mark whether the zone was originally added at runtime or not
*/
dns_zone_setadded(zone, added);
/*
* Determine if we need to set up inline signing.
*/
zone_maybe_inline = (strcasecmp(ztypestr, "primary") == 0 ||
strcasecmp(ztypestr, "master") == 0 ||
strcasecmp(ztypestr, "secondary") == 0 ||
strcasecmp(ztypestr, "slave") == 0);
if (zone_maybe_inline) {
inline_signing = named_zone_inlinesigning(zconfig, vconfig,
config, kasplist);
}
if (inline_signing) {
dns_zone_getraw(zone, &raw);
if (raw == NULL) {
dns_zone_create(&raw, dns_zone_getmem(zone),
dns_zone_gettid(zone));
CHECK(dns_zone_setorigin(raw, origin));
dns_zone_setview(raw, view);
dns_zone_setstats(raw, named_g_server->zonestats);
CHECK(dns_zone_link(zone, raw));
}
if (cfg_map_get(zoptions, "ixfr-from-differences",
&ixfrfromdiffs) == ISC_R_SUCCESS)
{
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"zone '%s': 'ixfr-from-differences' is "
"ignored for inline-signed zones",
zname);
}
}
/*
* Configure the zone.
*/
CHECK(named_zone_configure(config, vconfig, zconfig, aclconf, kasplist,
keystores, zone, raw));
/*
* Add the zone to its view in the new view list.
*/
if (!modify) {
CHECK(dns_view_addzone(view, zone));
}
if (zone_is_catz) {
/*
* force catz reload if the zone is loaded;
* if it's not it'll get reloaded on zone load
*/
dns_db_t *db = NULL;
tresult = dns_zone_getdb(zone, &db);
if (tresult == ISC_R_SUCCESS) {
dns_catz_dbupdate_callback(db, view->catzs);
dns_db_detach(&db);
}
}
/*
* Ensure that zone keys are reloaded on reconfig
*/
if ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_MAINTAIN) != 0) {
dns_zone_rekey(zone, fullsign);
}
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (raw != NULL) {
dns_zone_detach(&raw);
}
if (pview != NULL) {
dns_view_detach(&pview);
}
return result;
}
/*
* Configure built-in zone for storing managed-key data.
*/
static isc_result_t
add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx) {
isc_result_t result;
dns_view_t *pview = NULL;
dns_zone_t *zone = NULL;
dns_acl_t *none = NULL;
char filename[PATH_MAX];
bool defaultview;
REQUIRE(view != NULL);
/* See if we can re-use an existing keydata zone. */
result = dns_viewlist_find(&named_g_server->viewlist, view->name,
view->rdclass, &pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) {
return result;
}
if (pview != NULL) {
if (pview->managed_keys != NULL) {
dns_zone_attach(pview->managed_keys,
&view->managed_keys);
dns_zone_setview(pview->managed_keys, view);
dns_zone_setviewcommit(pview->managed_keys);
dns_view_detach(&pview);
dns_zone_synckeyzone(view->managed_keys);
return ISC_R_SUCCESS;
}
dns_view_detach(&pview);
}
/* No existing keydata zone was found; create one */
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone));
CHECK(dns_zone_setorigin(zone, dns_rootname));
defaultview = (strcmp(view->name, "_default") == 0);
CHECK(isc_file_sanitize(
directory, defaultview ? "managed-keys" : view->name,
defaultview ? "bind" : "mkeys", filename, sizeof(filename)));
CHECK(dns_zone_setfile(zone, filename, dns_masterformat_text,
&dns_master_style_default));
dns_zone_setview(zone, view);
dns_zone_settype(zone, dns_zone_key);
dns_zone_setclass(zone, view->rdclass);
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
CHECK(dns_acl_none(mctx, &none));
dns_zone_setqueryacl(zone, none);
dns_zone_setqueryonacl(zone, none);
dns_acl_detach(&none);
dns_zone_setdialup(zone, dns_dialuptype_no);
dns_zone_setcheckdstype(zone, dns_checkdstype_no);
dns_zone_setnotifytype(zone, dns_notifytype_no);
dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true);
dns_zone_setjournalsize(zone, 0);
dns_zone_setstats(zone, named_g_server->zonestats);
setquerystats(zone, mctx, dns_zonestat_none);
if (view->managed_keys != NULL) {
dns_zone_detach(&view->managed_keys);
}
dns_zone_attach(zone, &view->managed_keys);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"set up managed keys zone for view %s, file '%s'",
view->name, filename);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (none != NULL) {
dns_acl_detach(&none);
}
return result;
}
/*
* Configure a single server quota.
*/
static void
configure_server_quota(const cfg_obj_t **maps, const char *name,
isc_quota_t *quota) {
const cfg_obj_t *obj = NULL;
isc_result_t result;
result = named_config_get(maps, name, &obj);
INSIST(result == ISC_R_SUCCESS);
isc_quota_max(quota, cfg_obj_asuint32(obj));
}
/*
* This function is called as soon as the 'directory' statement has been
* parsed. This can be extended to support other options if necessary.
*/
static isc_result_t
directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) {
isc_result_t result;
const char *directory;
REQUIRE(strcasecmp("directory", clausename) == 0);
UNUSED(arg);
UNUSED(clausename);
/*
* Change directory.
*/
directory = cfg_obj_asstring(obj);
if (!isc_file_ischdiridempotent(directory)) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"option 'directory' contains relative path '%s'",
directory);
}
if (!isc_file_isdirwritable(directory)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"directory '%s' is not writable", directory);
return ISC_R_NOPERM;
}
result = isc_dir_chdir(directory);
if (result != ISC_R_SUCCESS) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"change directory to '%s' failed: %s", directory,
isc_result_totext(result));
return result;
}
char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd)) == cwd) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"the working directory is now '%s'", cwd);
}
return ISC_R_SUCCESS;
}
/*
* This event callback is invoked to do periodic network interface
* scanning.
*/
static void
interface_timer_tick(void *arg) {
named_server_t *server = (named_server_t *)arg;
(void)ns_interfacemgr_scan(server->interfacemgr, false, false);
}
static void
heartbeat_timer_tick(void *arg) {
named_server_t *server = (named_server_t *)arg;
dns_view_t *view = NULL;
view = ISC_LIST_HEAD(server->viewlist);
while (view != NULL) {
dns_view_dialup(view);
view = ISC_LIST_NEXT(view, link);
}
}
typedef struct {
isc_mem_t *mctx;
isc_loop_t *loop;
dns_fetch_t *fetch;
dns_view_t *view;
dns_fixedname_t tatname;
dns_fixedname_t keyname;
dns_rdataset_t rdataset;
dns_rdataset_t sigrdataset;
} ns_tat_t;
static int
cid(const void *a, const void *b) {
const uint16_t ida = *(const uint16_t *)a;
const uint16_t idb = *(const uint16_t *)b;
if (ida < idb) {
return -1;
} else if (ida > idb) {
return 1;
} else {
return 0;
}
}
static void
tat_done(void *arg) {
dns_fetchresponse_t *resp = (dns_fetchresponse_t *)arg;
ns_tat_t *tat = NULL;
INSIST(resp != NULL);
tat = resp->arg;
INSIST(tat != NULL);
/* Free resources which are not of interest */
if (resp->node != NULL) {
dns_db_detachnode(resp->db, &resp->node);
}
if (resp->db != NULL) {
dns_db_detach(&resp->db);
}
dns_resolver_freefresp(&resp);
dns_resolver_destroyfetch(&tat->fetch);
if (dns_rdataset_isassociated(&tat->rdataset)) {
dns_rdataset_disassociate(&tat->rdataset);
}
if (dns_rdataset_isassociated(&tat->sigrdataset)) {
dns_rdataset_disassociate(&tat->sigrdataset);
}
dns_view_detach(&tat->view);
isc_mem_putanddetach(&tat->mctx, tat, sizeof(*tat));
}
struct dotat_arg {
dns_view_t *view;
isc_loop_t *loop;
};
/*%
* Prepare the QNAME for the TAT query to be sent by processing the trust
* anchors present at 'keynode' of 'keytable'. Store the result in 'dst' and
* the domain name which 'keynode' is associated with in 'origin'.
*
* A maximum of 12 key IDs can be reported in a single TAT query due to the
* 63-octet length limit for any single label in a domain name. If there are
* more than 12 keys configured at 'keynode', only the first 12 will be
* reported in the TAT query.
*/
static isc_result_t
get_tat_qname(dns_name_t *target, dns_name_t *keyname, dns_keynode_t *keynode) {
dns_rdataset_t dsset;
unsigned int i, n = 0;
uint16_t ids[12];
isc_textregion_t r;
char label[64];
int m;
dns_rdataset_init(&dsset);
if (dns_keynode_dsset(keynode, &dsset)) {
isc_result_t result;
for (result = dns_rdataset_first(&dsset);
result == ISC_R_SUCCESS;
result = dns_rdataset_next(&dsset))
{
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdata_ds_t ds;
dns_rdata_reset(&rdata);
dns_rdataset_current(&dsset, &rdata);
result = dns_rdata_tostruct(&rdata, &ds, NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
if (n < (sizeof(ids) / sizeof(ids[0]))) {
ids[n] = ds.key_tag;
n++;
}
}
dns_rdataset_disassociate(&dsset);
}
if (n == 0) {
return DNS_R_EMPTYNAME;
}
if (n > 1) {
qsort(ids, n, sizeof(ids[0]), cid);
}
/*
* Encoded as "_ta-xxxx\(-xxxx\)*" where xxxx is the hex version of
* of the keyid.
*/
label[0] = 0;
r.base = label;
r.length = sizeof(label);
m = snprintf(r.base, r.length, "_ta");
if (m < 0 || (unsigned int)m > r.length) {
return ISC_R_FAILURE;
}
isc_textregion_consume(&r, m);
for (i = 0; i < n; i++) {
m = snprintf(r.base, r.length, "-%04x", ids[i]);
if (m < 0 || (unsigned int)m > r.length) {
return ISC_R_FAILURE;
}
isc_textregion_consume(&r, m);
}
return dns_name_fromstring(target, label, keyname, 0, NULL);
}
static void
tat_send(void *arg) {
ns_tat_t *tat = (ns_tat_t *)arg;
char namebuf[DNS_NAME_FORMATSIZE];
dns_fixedname_t fdomain;
dns_name_t *domain = NULL;
dns_rdataset_t nameservers;
isc_result_t result;
dns_name_t *keyname = NULL;
dns_name_t *tatname = NULL;
keyname = dns_fixedname_name(&tat->keyname);
tatname = dns_fixedname_name(&tat->tatname);
dns_name_format(tatname, namebuf, sizeof(namebuf));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"%s: sending trust-anchor-telemetry query '%s/NULL'",
tat->view->name, namebuf);
/*
* TAT queries should be sent to the authoritative servers for a given
* zone. If this function is called for a keytable node corresponding
* to a locally served zone, calling dns_resolver_createfetch() with
* NULL 'domain' and 'nameservers' arguments will cause 'tatname' to be
* resolved locally, without sending any TAT queries upstream.
*
* Work around this issue by calling dns_view_findzonecut() first. If
* the zone is served locally, the NS RRset for the given domain name
* will be retrieved from local data; if it is not, the deepest zone
* cut we have for it will be retrieved from cache. In either case,
* passing the results to dns_resolver_createfetch() will prevent it
* from returning NXDOMAIN for 'tatname' while still allowing it to
* chase down any potential delegations returned by upstream servers in
* order to eventually find the destination host to send the TAT query
* to.
*
* After the dns_view_findzonecut() call, 'domain' will hold the
* deepest zone cut we can find for 'keyname' while 'nameservers' will
* hold the NS RRset at that zone cut.
*/
domain = dns_fixedname_initname(&fdomain);
dns_rdataset_init(&nameservers);
result = dns_view_findzonecut(tat->view, keyname, domain, NULL, 0, 0,
true, true, &nameservers, NULL);
if (result == ISC_R_SUCCESS) {
result = dns_resolver_createfetch(
tat->view->resolver, tatname, dns_rdatatype_null,
domain, &nameservers, NULL, NULL, 0, 0, 0, NULL, NULL,
tat->loop, tat_done, tat, NULL, &tat->rdataset,
&tat->sigrdataset, &tat->fetch);
}
/*
* 'domain' holds the dns_name_t pointer inside a dst_key_t structure.
* dns_resolver_createfetch() creates its own copy of 'domain' if it
* succeeds. Thus, 'domain' is not freed here.
*
* Even if dns_view_findzonecut() returned something else than
* ISC_R_SUCCESS, it still could have associated 'nameservers'.
* dns_resolver_createfetch() creates its own copy of 'nameservers' if
* it succeeds. Thus, we need to check whether 'nameservers' is
* associated and release it if it is.
*/
if (dns_rdataset_isassociated(&nameservers)) {
dns_rdataset_disassociate(&nameservers);
}
if (result != ISC_R_SUCCESS) {
dns_view_detach(&tat->view);
isc_mem_putanddetach(&tat->mctx, tat, sizeof(*tat));
}
}
static void
dotat(dns_keytable_t *keytable, dns_keynode_t *keynode, dns_name_t *keyname,
void *arg) {
struct dotat_arg *dotat_arg = (struct dotat_arg *)arg;
isc_result_t result;
dns_view_t *view = NULL;
ns_tat_t *tat = NULL;
REQUIRE(keytable != NULL);
REQUIRE(keynode != NULL);
REQUIRE(dotat_arg != NULL);
view = dotat_arg->view;
tat = isc_mem_get(view->mctx, sizeof(*tat));
*tat = (ns_tat_t){ 0 };
dns_rdataset_init(&tat->rdataset);
dns_rdataset_init(&tat->sigrdataset);
dns_name_copy(keyname, dns_fixedname_initname(&tat->keyname));
result = get_tat_qname(dns_fixedname_initname(&tat->tatname), keyname,
keynode);
if (result != ISC_R_SUCCESS) {
isc_mem_put(view->mctx, tat, sizeof(*tat));
return;
}
isc_mem_attach(view->mctx, &tat->mctx);
tat->loop = dotat_arg->loop;
dns_view_attach(view, &tat->view);
/*
* We don't want to be holding the keytable lock when calling
* dns_view_findzonecut() as it creates a lock order loop so
* call dns_view_findzonecut() in a event handler.
*
* zone->lock (dns_zone_setviewcommit) while holding view->lock
* (dns_view_setviewcommit)
*
* keytable->lock (dns_keytable_find) while holding zone->lock
* (zone_asyncload)
*
* view->lock (dns_view_findzonecut) while holding keytable->lock
* (dns_keytable_forall)
*/
isc_async_run(named_g_mainloop, tat_send, tat);
}
static void
tat_timer_tick(void *arg) {
isc_result_t result;
named_server_t *server = (named_server_t *)arg;
struct dotat_arg dotat_arg = { 0 };
dns_view_t *view = NULL;
dns_keytable_t *secroots = NULL;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (!view->trust_anchor_telemetry || !view->enablevalidation) {
continue;
}
result = dns_view_getsecroots(view, &secroots);
if (result != ISC_R_SUCCESS) {
continue;
}
dotat_arg.view = view;
dotat_arg.loop = named_g_mainloop;
dns_keytable_forall(secroots, dotat, &dotat_arg);
dns_keytable_detach(&secroots);
}
}
static void
pps_timer_tick(void *arg) {
static unsigned int oldrequests = 0;
unsigned int requests = atomic_load_relaxed(&ns_client_requests);
UNUSED(arg);
/*
* Don't worry about wrapping as the overflow result will be right.
*/
dns_pps = (requests - oldrequests) / 1200;
oldrequests = requests;
}
/*
* Replace the current value of '*field', a dynamically allocated
* string or NULL, with a dynamically allocated copy of the
* null-terminated string pointed to by 'value', or NULL.
*/
static void
setstring(named_server_t *server, char **field, const char *value) {
char *copy;
if (value != NULL) {
copy = isc_mem_strdup(server->mctx, value);
} else {
copy = NULL;
}
if (*field != NULL) {
isc_mem_free(server->mctx, *field);
}
*field = copy;
}
/*
* Replace the current value of '*field', a dynamically allocated
* string or NULL, with another dynamically allocated string
* or NULL if whether 'obj' is a string or void value, respectively.
*/
static void
setoptstring(named_server_t *server, char **field, const cfg_obj_t *obj) {
if (cfg_obj_isvoid(obj)) {
setstring(server, field, NULL);
} else {
setstring(server, field, cfg_obj_asstring(obj));
}
}
static void
portset_fromconf(isc_portset_t *portset, const cfg_obj_t *ports,
bool positive) {
const cfg_listelt_t *element;
for (element = cfg_list_first(ports); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *obj = cfg_listelt_value(element);
if (cfg_obj_isuint32(obj)) {
in_port_t port = (in_port_t)cfg_obj_asuint32(obj);
if (positive) {
isc_portset_add(portset, port);
} else {
isc_portset_remove(portset, port);
}
} else {
const cfg_obj_t *obj_loport, *obj_hiport;
in_port_t loport, hiport;
obj_loport = cfg_tuple_get(obj, "loport");
loport = (in_port_t)cfg_obj_asuint32(obj_loport);
obj_hiport = cfg_tuple_get(obj, "hiport");
hiport = (in_port_t)cfg_obj_asuint32(obj_hiport);
if (positive) {
isc_portset_addrange(portset, loport, hiport);
} else {
isc_portset_removerange(portset, loport,
hiport);
}
}
}
}
static isc_result_t
removed(dns_zone_t *zone, void *uap) {
if (dns_zone_getview(zone) != uap) {
return ISC_R_SUCCESS;
}
dns_zone_log(zone, ISC_LOG_INFO, "(%s) removed",
dns_zonetype_name(dns_zone_gettype(zone)));
return ISC_R_SUCCESS;
}
static void
cleanup_session_key(named_server_t *server, isc_mem_t *mctx) {
if (server->session_keyfile != NULL) {
isc_file_remove(server->session_keyfile);
isc_mem_free(mctx, server->session_keyfile);
server->session_keyfile = NULL;
}
if (server->session_keyname != NULL) {
if (dns_name_dynamic(server->session_keyname)) {
dns_name_free(server->session_keyname, mctx);
}
isc_mem_put(mctx, server->session_keyname, sizeof(dns_name_t));
server->session_keyname = NULL;
}
if (server->sessionkey != NULL) {
dst_key_free(&server->sessionkey);
}
server->session_keyalg = DST_ALG_UNKNOWN;
server->session_keybits = 0;
}
static isc_result_t
generate_session_key(const char *filename, const char *keynamestr,
const dns_name_t *keyname, dst_algorithm_t alg,
uint16_t bits, isc_mem_t *mctx, bool first_time,
dst_key_t **keyp) {
isc_result_t result = ISC_R_SUCCESS;
dst_key_t *key = NULL;
isc_buffer_t key_txtbuffer;
isc_buffer_t key_rawbuffer;
char key_txtsecret[256];
char key_rawsecret[64];
isc_region_t key_rawregion;
FILE *fp = NULL;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"generating session key for dynamic DNS");
/* generate key */
result = dst_key_generate(keyname, alg, bits, 1, 0, DNS_KEYPROTO_ANY,
dns_rdataclass_in, NULL, mctx, &key, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
/*
* Dump the key to the buffer for later use.
*/
isc_buffer_init(&key_rawbuffer, &key_rawsecret, sizeof(key_rawsecret));
CHECK(dst_key_tobuffer(key, &key_rawbuffer));
isc_buffer_usedregion(&key_rawbuffer, &key_rawregion);
isc_buffer_init(&key_txtbuffer, &key_txtsecret, sizeof(key_txtsecret));
CHECK(isc_base64_totext(&key_rawregion, -1, "", &key_txtbuffer));
/* Dump the key to the key file. */
fp = named_os_openfile(filename, S_IRUSR | S_IWUSR, first_time);
if (fp == NULL) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"could not create %s", filename);
result = ISC_R_NOPERM;
goto cleanup;
}
fprintf(fp,
"key \"%s\" {\n"
"\talgorithm %s;\n"
"\tsecret \"%.*s\";\n};\n",
keynamestr, dst_hmac_algorithm_totext(alg),
(int)isc_buffer_usedlength(&key_txtbuffer),
(char *)isc_buffer_base(&key_txtbuffer));
CHECK(isc_stdio_flush(fp));
result = isc_stdio_close(fp);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
*keyp = key;
return ISC_R_SUCCESS;
cleanup:
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"failed to generate session key "
"for dynamic DNS: %s",
isc_result_totext(result));
if (fp != NULL) {
(void)isc_stdio_close(fp);
(void)isc_file_remove(filename);
}
if (key != NULL) {
dst_key_free(&key);
}
return result;
}
static isc_result_t
configure_session_key(const cfg_obj_t **maps, named_server_t *server,
isc_mem_t *mctx, bool first_time) {
const char *keyfile = NULL, *keynamestr = NULL, *algstr = NULL;
unsigned int algtype;
dns_fixedname_t fname;
dns_name_t *keyname = NULL;
isc_buffer_t buffer;
uint16_t bits;
const cfg_obj_t *obj = NULL;
bool need_deleteold = false;
bool need_createnew = false;
isc_result_t result;
obj = NULL;
result = named_config_get(maps, "session-keyfile", &obj);
if (result == ISC_R_SUCCESS) {
if (cfg_obj_isvoid(obj)) {
keyfile = NULL; /* disable it */
} else {
keyfile = cfg_obj_asstring(obj);
}
} else {
keyfile = named_g_defaultsessionkeyfile;
}
obj = NULL;
result = named_config_get(maps, "session-keyname", &obj);
INSIST(result == ISC_R_SUCCESS);
keynamestr = cfg_obj_asstring(obj);
isc_buffer_constinit(&buffer, keynamestr, strlen(keynamestr));
isc_buffer_add(&buffer, strlen(keynamestr));
keyname = dns_fixedname_initname(&fname);
result = dns_name_fromtext(keyname, &buffer, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
obj = NULL;
result = named_config_get(maps, "session-keyalg", &obj);
INSIST(result == ISC_R_SUCCESS);
algstr = cfg_obj_asstring(obj);
result = named_config_getkeyalgorithm(algstr, &algtype, &bits);
if (result != ISC_R_SUCCESS) {
const char *s = " (keeping current key)";
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"session-keyalg: "
"unsupported or unknown algorithm '%s'%s",
algstr, server->session_keyfile != NULL ? s : "");
return result;
}
/* See if we need to (re)generate a new key. */
if (keyfile == NULL) {
if (server->session_keyfile != NULL) {
need_deleteold = true;
}
} else if (server->session_keyfile == NULL) {
need_createnew = true;
} else if (strcmp(keyfile, server->session_keyfile) != 0 ||
!dns_name_equal(server->session_keyname, keyname) ||
server->session_keyalg != algtype ||
server->session_keybits != bits)
{
need_deleteold = true;
need_createnew = true;
}
if (need_deleteold) {
INSIST(server->session_keyfile != NULL);
INSIST(server->session_keyname != NULL);
INSIST(server->sessionkey != NULL);
cleanup_session_key(server, mctx);
}
if (need_createnew) {
INSIST(server->sessionkey == NULL);
INSIST(server->session_keyfile == NULL);
INSIST(server->session_keyname == NULL);
INSIST(server->session_keyalg == DST_ALG_UNKNOWN);
INSIST(server->session_keybits == 0);
server->session_keyname = isc_mem_get(mctx, sizeof(dns_name_t));
dns_name_init(server->session_keyname, NULL);
dns_name_dup(keyname, mctx, server->session_keyname);
server->session_keyfile = isc_mem_strdup(mctx, keyfile);
server->session_keyalg = algtype;
server->session_keybits = bits;
CHECK(generate_session_key(keyfile, keynamestr, keyname,
algtype, bits, mctx, first_time,
&server->sessionkey));
}
return result;
cleanup:
cleanup_session_key(server, mctx);
return result;
}
static isc_result_t
setup_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
cfg_parser_t *conf_parser, cfg_aclconfctx_t *actx) {
isc_result_t result = ISC_R_SUCCESS;
bool allow = false;
ns_cfgctx_t *nzcfg = NULL;
const cfg_obj_t *maps[4];
const cfg_obj_t *options = NULL, *voptions = NULL;
const cfg_obj_t *nz = NULL;
const cfg_obj_t *nzdir = NULL;
const char *dir = NULL;
const cfg_obj_t *obj = NULL;
int i = 0;
uint64_t mapsize = 0ULL;
REQUIRE(config != NULL);
if (vconfig != NULL) {
voptions = cfg_tuple_get(vconfig, "options");
}
if (voptions != NULL) {
maps[i++] = voptions;
}
result = cfg_map_get(config, "options", &options);
if (result == ISC_R_SUCCESS) {
maps[i++] = options;
}
maps[i++] = named_g_defaults;
maps[i] = NULL;
result = named_config_get(maps, "allow-new-zones", &nz);
if (result == ISC_R_SUCCESS) {
allow = cfg_obj_asboolean(nz);
}
result = named_config_get(maps, "new-zones-directory", &nzdir);
if (result == ISC_R_SUCCESS) {
dir = cfg_obj_asstring(nzdir);
result = isc_file_isdirectory(dir);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"invalid new-zones-directory %s: %s", dir,
isc_result_totext(result));
return result;
}
if (!isc_file_isdirwritable(dir)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"new-zones-directory '%s' "
"is not writable",
dir);
return ISC_R_NOPERM;
}
dns_view_setnewzonedir(view, dir);
}
#ifdef HAVE_LMDB
result = named_config_get(maps, "lmdb-mapsize", &obj);
if (result == ISC_R_SUCCESS && obj != NULL) {
mapsize = cfg_obj_asuint64(obj);
if (mapsize < (1ULL << 20)) { /* 1 megabyte */
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"'lmdb-mapsize "
"%" PRId64 "' "
"is too small",
mapsize);
return ISC_R_FAILURE;
} else if (mapsize > (1ULL << 40)) { /* 1 terabyte */
cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR,
"'lmdb-mapsize "
"%" PRId64 "' "
"is too large",
mapsize);
return ISC_R_FAILURE;
}
}
#else /* ifdef HAVE_LMDB */
UNUSED(obj);
#endif /* HAVE_LMDB */
/*
* A non-empty catalog-zones statement implies allow-new-zones
*/
if (!allow) {
const cfg_obj_t *cz = NULL;
result = named_config_get(maps, "catalog-zones", &cz);
if (result == ISC_R_SUCCESS) {
const cfg_listelt_t *e =
cfg_list_first(cfg_tuple_get(cz, "zone list"));
if (e != NULL) {
allow = true;
}
}
}
if (!allow) {
dns_view_setnewzones(view, false, NULL, NULL, 0ULL);
return ISC_R_SUCCESS;
}
nzcfg = isc_mem_get(view->mctx, sizeof(*nzcfg));
*nzcfg = (ns_cfgctx_t){ 0 };
/*
* We attach the parser that was used for config as well
* as the one that will be used for added zones, to avoid
* a shutdown race later.
*/
isc_mem_attach(view->mctx, &nzcfg->mctx);
cfg_parser_attach(conf_parser, &nzcfg->conf_parser);
cfg_parser_attach(named_g_addparser, &nzcfg->add_parser);
cfg_aclconfctx_attach(actx, &nzcfg->actx);
result = dns_view_setnewzones(view, true, nzcfg, newzone_cfgctx_destroy,
mapsize);
if (result != ISC_R_SUCCESS) {
cfg_aclconfctx_detach(&nzcfg->actx);
cfg_parser_destroy(&nzcfg->add_parser);
cfg_parser_destroy(&nzcfg->conf_parser);
isc_mem_putanddetach(&nzcfg->mctx, nzcfg, sizeof(*nzcfg));
dns_view_setnewzones(view, false, NULL, NULL, 0ULL);
return result;
}
cfg_obj_attach(config, &nzcfg->config);
if (vconfig != NULL) {
cfg_obj_attach(vconfig, &nzcfg->vconfig);
}
result = load_nzf(view, nzcfg);
return result;
}
static void
configure_zone_setviewcommit(isc_result_t result, const cfg_obj_t *zconfig,
dns_view_t *view) {
const char *zname;
dns_fixedname_t fixorigin;
dns_name_t *origin;
isc_result_t result2;
dns_view_t *pview = NULL;
dns_zone_t *zone = NULL;
zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
origin = dns_fixedname_initname(&fixorigin);
result2 = dns_name_fromstring(origin, zname, dns_rootname, 0, NULL);
if (result2 != ISC_R_SUCCESS) {
return;
}
result2 = dns_viewlist_find(&named_g_server->viewlist, view->name,
view->rdclass, &pview);
if (result2 != ISC_R_SUCCESS) {
return;
}
result2 = dns_view_findzone(pview, origin, DNS_ZTFIND_EXACT, &zone);
if (result2 != ISC_R_SUCCESS) {
dns_view_detach(&pview);
return;
}
if (result == ISC_R_SUCCESS) {
dns_zone_setviewcommit(zone);
} else {
dns_zone_setviewrevert(zone);
}
dns_zone_detach(&zone);
dns_view_detach(&pview);
}
#ifndef HAVE_LMDB
static isc_result_t
configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
cfg_aclconfctx_t *actx) {
isc_result_t result;
ns_cfgctx_t *nzctx;
const cfg_obj_t *zonelist;
const cfg_listelt_t *element;
nzctx = view->new_zone_config;
if (nzctx == NULL || nzctx->nzf_config == NULL) {
return ISC_R_SUCCESS;
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"loading additional zones for view '%s'", view->name);
zonelist = NULL;
cfg_map_get(nzctx->nzf_config, "zone", &zonelist);
for (element = cfg_list_first(zonelist); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *zconfig = cfg_listelt_value(element);
CHECK(configure_zone(config, zconfig, vconfig, view,
&named_g_server->viewlist,
&named_g_server->kasplist,
&named_g_server->keystorelist, actx, true,
false, false, false));
}
result = ISC_R_SUCCESS;
cleanup:
for (element = cfg_list_first(zonelist); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *zconfig = cfg_listelt_value(element);
configure_zone_setviewcommit(result, zconfig, view);
}
return result;
}
#else /* HAVE_LMDB */
static isc_result_t
data_to_cfg(dns_view_t *view, MDB_val *key, MDB_val *data, isc_buffer_t **text,
cfg_obj_t **zoneconfig) {
isc_result_t result;
const char *zone_name;
size_t zone_name_len;
const char *zone_config;
size_t zone_config_len;
cfg_obj_t *zoneconf = NULL;
char bufname[DNS_NAME_FORMATSIZE];
REQUIRE(view != NULL);
REQUIRE(key != NULL);
REQUIRE(data != NULL);
REQUIRE(text != NULL);
REQUIRE(zoneconfig != NULL && *zoneconfig == NULL);
if (*text == NULL) {
isc_buffer_allocate(view->mctx, text, 256);
} else {
isc_buffer_clear(*text);
}
zone_name = (const char *)key->mv_data;
zone_name_len = key->mv_size;
INSIST(zone_name != NULL && zone_name_len > 0);
zone_config = (const char *)data->mv_data;
zone_config_len = data->mv_size;
INSIST(zone_config != NULL && zone_config_len > 0);
/* zone zonename { config; }; */
result = isc_buffer_reserve(*text, 6 + zone_name_len + 2 +
zone_config_len + 2);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
CHECK(putstr(text, "zone \""));
CHECK(putmem(text, (const void *)zone_name, zone_name_len));
CHECK(putstr(text, "\" "));
CHECK(putmem(text, (const void *)zone_config, zone_config_len));
CHECK(putstr(text, ";\n"));
snprintf(bufname, sizeof(bufname), "%.*s", (int)zone_name_len,
zone_name);
cfg_parser_reset(named_g_addparser);
result = cfg_parse_buffer(named_g_addparser, *text, bufname, 0,
&cfg_type_addzoneconf, 0, &zoneconf);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"parsing config for zone '%.*s' in "
"NZD database '%s' failed",
(int)zone_name_len, zone_name, view->new_zone_db);
goto cleanup;
}
*zoneconfig = zoneconf;
zoneconf = NULL;
result = ISC_R_SUCCESS;
cleanup:
if (zoneconf != NULL) {
cfg_obj_destroy(named_g_addparser, &zoneconf);
}
return result;
}
/*%
* Prototype for a callback which can be used with for_all_newzone_cfgs().
*/
typedef isc_result_t (*newzone_cfg_cb_t)(const cfg_obj_t *zconfig,
cfg_obj_t *config, cfg_obj_t *vconfig,
dns_view_t *view,
cfg_aclconfctx_t *actx);
/*%
* For each zone found in a NZD opened by the caller, create an object
* representing its configuration and invoke "callback" with the created
* object, "config", "vconfig", "mctx", "view" and "actx" as arguments (all
* these are non-global variables required to invoke configure_zone()).
* Immediately interrupt processing if an error is encountered while
* transforming NZD data into a zone configuration object or if "callback"
* returns an error.
*
* Caller must hold 'view->new_zone_lock'.
*/
static isc_result_t
for_all_newzone_cfgs(newzone_cfg_cb_t callback, cfg_obj_t *config,
cfg_obj_t *vconfig, dns_view_t *view,
cfg_aclconfctx_t *actx, MDB_txn *txn, MDB_dbi dbi) {
const cfg_obj_t *zconfig, *zlist;
isc_result_t result = ISC_R_SUCCESS;
cfg_obj_t *zconfigobj = NULL;
isc_buffer_t *text = NULL;
MDB_cursor *cursor = NULL;
MDB_val data, key;
int status;
status = mdb_cursor_open(txn, dbi, &cursor);
if (status != MDB_SUCCESS) {
return ISC_R_FAILURE;
}
for (status = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
status == MDB_SUCCESS;
status = mdb_cursor_get(cursor, &key, &data, MDB_NEXT))
{
/*
* Create a configuration object from data fetched from NZD.
*/
result = data_to_cfg(view, &key, &data, &text, &zconfigobj);
if (result != ISC_R_SUCCESS) {
break;
}
/*
* Extract zone configuration from configuration object.
*/
zlist = NULL;
result = cfg_map_get(zconfigobj, "zone", &zlist);
if (result != ISC_R_SUCCESS) {
break;
} else if (!cfg_obj_islist(zlist)) {
result = ISC_R_FAILURE;
break;
}
zconfig = cfg_listelt_value(cfg_list_first(zlist));
/*
* Invoke callback.
*/
result = callback(zconfig, config, vconfig, view, actx);
if (result != ISC_R_SUCCESS) {
break;
}
/*
* Destroy the configuration object created in this iteration.
*/
cfg_obj_destroy(named_g_addparser, &zconfigobj);
}
if (text != NULL) {
isc_buffer_free(&text);
}
if (zconfigobj != NULL) {
cfg_obj_destroy(named_g_addparser, &zconfigobj);
}
mdb_cursor_close(cursor);
return result;
}
/*%
* Attempt to configure a zone found in NZD and return the result.
*/
static isc_result_t
configure_newzone(const cfg_obj_t *zconfig, cfg_obj_t *config,
cfg_obj_t *vconfig, dns_view_t *view,
cfg_aclconfctx_t *actx) {
return configure_zone(
config, zconfig, vconfig, view, &named_g_server->viewlist,
&named_g_server->kasplist, &named_g_server->keystorelist, actx,
true, false, false, false);
}
/*%
* Revert new view assignment for a zone found in NZD.
*/
static isc_result_t
configure_newzone_revert(const cfg_obj_t *zconfig, cfg_obj_t *config,
cfg_obj_t *vconfig, dns_view_t *view,
cfg_aclconfctx_t *actx) {
UNUSED(config);
UNUSED(vconfig);
UNUSED(actx);
configure_zone_setviewcommit(ISC_R_FAILURE, zconfig, view);
return ISC_R_SUCCESS;
}
static isc_result_t
configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
cfg_aclconfctx_t *actx) {
isc_result_t result;
MDB_txn *txn = NULL;
MDB_dbi dbi;
if (view->new_zone_config == NULL) {
return ISC_R_SUCCESS;
}
LOCK(&view->new_zone_lock);
result = nzd_open(view, MDB_RDONLY, &txn, &dbi);
if (result != ISC_R_SUCCESS) {
UNLOCK(&view->new_zone_lock);
return ISC_R_SUCCESS;
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"loading NZD configs from '%s' "
"for view '%s'",
view->new_zone_db, view->name);
result = for_all_newzone_cfgs(configure_newzone, config, vconfig, view,
actx, txn, dbi);
if (result != ISC_R_SUCCESS) {
/*
* An error was encountered while attempting to configure zones
* found in NZD. As this error may have been caused by a
* configure_zone() failure, try restoring a sane configuration
* by reattaching all zones found in NZD to the old view. If
* this also fails, too bad, there is nothing more we can do in
* terms of trying to make things right.
*/
(void)for_all_newzone_cfgs(configure_newzone_revert, config,
vconfig, view, actx, txn, dbi);
}
(void)nzd_close(&txn, false);
UNLOCK(&view->new_zone_lock);
return result;
}
static isc_result_t
get_newzone_config(dns_view_t *view, const char *zonename,
cfg_obj_t **zoneconfig) {
isc_result_t result;
int status;
cfg_obj_t *zoneconf = NULL;
isc_buffer_t *text = NULL;
MDB_txn *txn = NULL;
MDB_dbi dbi;
MDB_val key, data;
char zname[DNS_NAME_FORMATSIZE];
dns_fixedname_t fname;
dns_name_t *name;
isc_buffer_t b;
INSIST(zoneconfig != NULL && *zoneconfig == NULL);
LOCK(&view->new_zone_lock);
CHECK(nzd_open(view, MDB_RDONLY, &txn, &dbi));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"loading NZD config from '%s' "
"for zone '%s'",
view->new_zone_db, zonename);
/* Normalize zone name */
isc_buffer_constinit(&b, zonename, strlen(zonename));
isc_buffer_add(&b, strlen(zonename));
name = dns_fixedname_initname(&fname);
CHECK(dns_name_fromtext(name, &b, dns_rootname, DNS_NAME_DOWNCASE,
NULL));
dns_name_format(name, zname, sizeof(zname));
key.mv_data = zname;
key.mv_size = strlen(zname);
status = mdb_get(txn, dbi, &key, &data);
if (status != MDB_SUCCESS) {
CHECK(ISC_R_FAILURE);
}
CHECK(data_to_cfg(view, &key, &data, &text, &zoneconf));
*zoneconfig = zoneconf;
zoneconf = NULL;
result = ISC_R_SUCCESS;
cleanup:
(void)nzd_close(&txn, false);
UNLOCK(&view->new_zone_lock);
if (zoneconf != NULL) {
cfg_obj_destroy(named_g_addparser, &zoneconf);
}
if (text != NULL) {
isc_buffer_free(&text);
}
return result;
}
#endif /* HAVE_LMDB */
static isc_result_t
load_configuration(const char *filename, named_server_t *server,
bool first_time) {
cfg_obj_t *config = NULL, *bindkeys = NULL;
cfg_parser_t *conf_parser = NULL, *bindkeys_parser = NULL;
const cfg_listelt_t *element;
const cfg_obj_t *builtin_views;
const cfg_obj_t *maps[3];
const cfg_obj_t *obj;
const cfg_obj_t *options;
const cfg_obj_t *usev4ports, *avoidv4ports, *usev6ports, *avoidv6ports;
const cfg_obj_t *kasps;
const cfg_obj_t *keystores;
dns_kasp_t *kasp = NULL;
dns_kasp_t *kasp_next = NULL;
dns_kasp_t *default_kasp = NULL;
dns_kasplist_t tmpkasplist, kasplist;
dns_keystore_t *keystore = NULL;
dns_keystore_t *keystore_next = NULL;
dns_keystorelist_t tmpkeystorelist, keystorelist;
const cfg_obj_t *views = NULL;
dns_view_t *view_next = NULL;
dns_viewlist_t tmpviewlist;
dns_viewlist_t viewlist, builtin_viewlist;
in_port_t listen_port, udpport_low, udpport_high;
int i, backlog;
isc_interval_t interval;
isc_logconfig_t *logc = NULL;
isc_portset_t *v4portset = NULL;
isc_portset_t *v6portset = NULL;
isc_result_t result;
uint32_t heartbeat_interval;
uint32_t interface_interval;
uint32_t udpsize;
uint32_t transfer_message_size;
uint32_t recv_tcp_buffer_size;
uint32_t send_tcp_buffer_size;
uint32_t recv_udp_buffer_size;
uint32_t send_udp_buffer_size;
named_cache_t *nsc = NULL;
named_cachelist_t cachelist, tmpcachelist;
ns_altsecret_t *altsecret;
ns_altsecretlist_t altsecrets, tmpaltsecrets;
uint32_t softquota = 0;
uint32_t max;
uint64_t initial, idle, keepalive, advertised;
bool loadbalancesockets;
bool exclusive = true;
dns_aclenv_t *env =
ns_interfacemgr_getaclenv(named_g_server->interfacemgr);
/*
* Require the reconfiguration to happen always on the main loop
*/
REQUIRE(isc_loop() == named_g_mainloop);
ISC_LIST_INIT(kasplist);
ISC_LIST_INIT(keystorelist);
ISC_LIST_INIT(viewlist);
ISC_LIST_INIT(builtin_viewlist);
ISC_LIST_INIT(cachelist);
ISC_LIST_INIT(altsecrets);
/* Ensure exclusive access to configuration data. */
isc_loopmgr_pause(named_g_loopmgr);
/* Create the ACL configuration context */
if (named_g_aclconfctx != NULL) {
cfg_aclconfctx_detach(&named_g_aclconfctx);
}
result = cfg_aclconfctx_create(named_g_mctx, &named_g_aclconfctx);
if (result != ISC_R_SUCCESS) {
goto cleanup_exclusive;
}
/*
* Shut down all dyndb instances.
*/
dns_dyndb_cleanup(false);
/*
* Parse the global default pseudo-config file.
*/
if (first_time) {
result = named_config_parsedefaults(named_g_parser,
&named_g_config);
if (result != ISC_R_SUCCESS) {
named_main_earlyfatal("unable to load "
"internal defaults: %s",
isc_result_totext(result));
}
RUNTIME_CHECK(cfg_map_get(named_g_config, "options",
&named_g_defaults) == ISC_R_SUCCESS);
}
/*
* Log the current working directory.
*/
if (first_time) {
char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd)) == cwd) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"the initial working directory is '%s'",
cwd);
}
}
/*
* Parse the configuration file using the new config code.
*/
config = NULL;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"loading configuration from '%s'", filename);
result = cfg_parser_create(named_g_mctx, named_g_lctx, &conf_parser);
if (result != ISC_R_SUCCESS) {
goto cleanup_exclusive;
}
cfg_parser_setcallback(conf_parser, directory_callback, NULL);
result = cfg_parse_file(conf_parser, filename, &cfg_type_namedconf,
&config);
if (result != ISC_R_SUCCESS) {
goto cleanup_conf_parser;
}
/*
* Check the validity of the configuration.
*
* (Ignore plugin parameters for now; they will be
* checked later when the modules are actually loaded and
* registered.)
*/
result = isccfg_check_namedconf(config, BIND_CHECK_ALGORITHMS,
named_g_lctx, named_g_mctx);
if (result != ISC_R_SUCCESS) {
goto cleanup_config;
}
/* Let's recreate the TLS context cache */
if (server->tlsctx_server_cache != NULL) {
isc_tlsctx_cache_detach(&server->tlsctx_server_cache);
}
isc_tlsctx_cache_create(named_g_mctx, &server->tlsctx_server_cache);
if (server->tlsctx_client_cache != NULL) {
isc_tlsctx_cache_detach(&server->tlsctx_client_cache);
}
isc_tlsctx_cache_create(named_g_mctx, &server->tlsctx_client_cache);
dns_zonemgr_set_tlsctx_cache(server->zonemgr,
server->tlsctx_client_cache);
/*
* Fill in the maps array, used for resolving defaults.
*/
i = 0;
options = NULL;
result = cfg_map_get(config, "options", &options);
if (result == ISC_R_SUCCESS) {
maps[i++] = options;
}
maps[i++] = named_g_defaults;
maps[i] = NULL;
#if HAVE_LIBNGHTTP2
obj = NULL;
result = named_config_get(maps, "http-port", &obj);
INSIST(result == ISC_R_SUCCESS);
named_g_httpport = (in_port_t)cfg_obj_asuint32(obj);
obj = NULL;
result = named_config_get(maps, "https-port", &obj);
INSIST(result == ISC_R_SUCCESS);
named_g_httpsport = (in_port_t)cfg_obj_asuint32(obj);
obj = NULL;
result = named_config_get(maps, "http-listener-clients", &obj);
INSIST(result == ISC_R_SUCCESS);
named_g_http_listener_clients = cfg_obj_asuint32(obj);
obj = NULL;
result = named_config_get(maps, "http-streams-per-connection", &obj);
INSIST(result == ISC_R_SUCCESS);
named_g_http_streams_per_conn = cfg_obj_asuint32(obj);
#endif
/*
* If "dnssec-validation auto" is turned on, the root key
* will be used as a default trust anchor. The root key
* is built in, but if bindkeys-file is set, then it will
* be overridden with the key in that file.
*/
obj = NULL;
(void)named_config_get(maps, "bindkeys-file", &obj);
if (obj != NULL) {
setstring(server, &server->bindkeysfile, cfg_obj_asstring(obj));
INSIST(server->bindkeysfile != NULL);
if (access(server->bindkeysfile, R_OK) != 0) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"unable to open '%s'; using built-in "
"keys instead",
server->bindkeysfile);
} else {
result = cfg_parser_create(named_g_mctx, named_g_lctx,
&bindkeys_parser);
if (result != ISC_R_SUCCESS) {
goto cleanup_config;
}
result = cfg_parse_file(bindkeys_parser,
server->bindkeysfile,
&cfg_type_bindkeys, &bindkeys);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"unable to parse '%s' "
"error '%s'; using "
"built-in keys instead",
server->bindkeysfile,
isc_result_totext(result));
}
}
} else {
setstring(server, &server->bindkeysfile, NULL);
}
#if defined(HAVE_GEOIP2)
/*
* Release any previously opened GeoIP2 databases.
*/
named_geoip_unload();
/*
* Initialize GeoIP databases from the configured location.
* This should happen before configuring any ACLs, so that we
* know what databases are available and can reject any GeoIP
* ACLs that can't work.
*/
obj = NULL;
result = named_config_get(maps, "geoip-directory", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_isstring(obj)) {
char *dir = UNCONST(cfg_obj_asstring(obj));
named_geoip_load(dir);
}
named_g_aclconfctx->geoip = named_g_geoip;
#endif /* HAVE_GEOIP2 */
/*
* Configure various server options.
*/
configure_server_quota(maps, "transfers-out",
&server->sctx->xfroutquota);
configure_server_quota(maps, "tcp-clients", &server->sctx->tcpquota);
configure_server_quota(maps, "recursive-clients",
&server->sctx->recursionquota);
configure_server_quota(maps, "update-quota", &server->sctx->updquota);
configure_server_quota(maps, "sig0checks-quota",
&server->sctx->sig0checksquota);
max = isc_quota_getmax(&server->sctx->recursionquota);
if (max > 1000) {
unsigned int margin = ISC_MAX(100, named_g_cpus + 1);
if (margin + 100 > max) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"'recursive-clients %d' too low when "
"running with %d worker threads",
max, named_g_cpus);
result = ISC_R_RANGE;
goto cleanup_bindkeys_parser;
}
softquota = max - margin;
} else {
softquota = (max * 90) / 100;
}
isc_quota_soft(&server->sctx->recursionquota, softquota);
obj = NULL;
result = named_config_get(maps, "sig0checks-quota-exempt", &obj);
if (result == ISC_R_SUCCESS) {
result = cfg_acl_fromconfig(
obj, config, named_g_lctx, named_g_aclconfctx,
named_g_mctx, 0, &server->sctx->sig0checksquota_exempt);
INSIST(result == ISC_R_SUCCESS);
}
/*
* Set "blackhole". Only legal at options level; there is
* no default.
*/
result = configure_view_acl(NULL, config, NULL, "blackhole", NULL,
named_g_aclconfctx, named_g_mctx,
&server->sctx->blackholeacl);
if (result != ISC_R_SUCCESS) {
goto cleanup_bindkeys_parser;
}
if (server->sctx->blackholeacl != NULL) {
dns_dispatchmgr_setblackhole(named_g_dispatchmgr,
server->sctx->blackholeacl);
}
obj = NULL;
result = named_config_get(maps, "match-mapped-addresses", &obj);
INSIST(result == ISC_R_SUCCESS);
env->match_mapped = cfg_obj_asboolean(obj);
/*
* Configure the network manager
*/
obj = NULL;
result = named_config_get(maps, "tcp-initial-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
initial = cfg_obj_asuint32(obj) * 100;
if (initial > MAX_INITIAL_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-initial-timeout value is out of range: "
"lowering to %" PRIu32,
MAX_INITIAL_TIMEOUT / 100);
initial = MAX_INITIAL_TIMEOUT;
} else if (initial < MIN_INITIAL_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-initial-timeout value is out of range: "
"raising to %" PRIu32,
MIN_INITIAL_TIMEOUT / 100);
initial = MIN_INITIAL_TIMEOUT;
}
obj = NULL;
result = named_config_get(maps, "tcp-idle-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
idle = cfg_obj_asuint32(obj) * 100;
if (idle > MAX_IDLE_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-idle-timeout value is out of range: "
"lowering to %" PRIu32,
MAX_IDLE_TIMEOUT / 100);
idle = MAX_IDLE_TIMEOUT;
} else if (idle < MIN_IDLE_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-idle-timeout value is out of range: "
"raising to %" PRIu32,
MIN_IDLE_TIMEOUT / 100);
idle = MIN_IDLE_TIMEOUT;
}
obj = NULL;
result = named_config_get(maps, "tcp-keepalive-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
keepalive = cfg_obj_asuint32(obj) * 100;
if (keepalive > MAX_KEEPALIVE_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-keepalive-timeout value is out of range: "
"lowering to %" PRIu32,
MAX_KEEPALIVE_TIMEOUT / 100);
keepalive = MAX_KEEPALIVE_TIMEOUT;
} else if (keepalive < MIN_KEEPALIVE_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-keepalive-timeout value is out of range: "
"raising to %" PRIu32,
MIN_KEEPALIVE_TIMEOUT / 100);
keepalive = MIN_KEEPALIVE_TIMEOUT;
}
obj = NULL;
result = named_config_get(maps, "tcp-advertised-timeout", &obj);
INSIST(result == ISC_R_SUCCESS);
advertised = cfg_obj_asuint32(obj) * 100;
if (advertised > MAX_ADVERTISED_TIMEOUT) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"tcp-advertized-timeout value is out of range: "
"lowering to %" PRIu32,
MAX_ADVERTISED_TIMEOUT / 100);
advertised = MAX_ADVERTISED_TIMEOUT;
}
isc_nm_settimeouts(named_g_netmgr, initial, idle, keepalive,
advertised);
#define CAP_IF_NOT_ZERO(v, min, max) \
if (v > 0 && v < min) { \
v = min; \
} else if (v > max) { \
v = max; \
}
/* Set the kernel send and receive buffer sizes */
obj = NULL;
result = named_config_get(maps, "tcp-receive-buffer", &obj);
INSIST(result == ISC_R_SUCCESS);
recv_tcp_buffer_size = cfg_obj_asuint32(obj);
CAP_IF_NOT_ZERO(recv_tcp_buffer_size, 4096, INT32_MAX);
obj = NULL;
result = named_config_get(maps, "tcp-send-buffer", &obj);
INSIST(result == ISC_R_SUCCESS);
send_tcp_buffer_size = cfg_obj_asuint32(obj);
CAP_IF_NOT_ZERO(send_tcp_buffer_size, 4096, INT32_MAX);
obj = NULL;
result = named_config_get(maps, "udp-receive-buffer", &obj);
INSIST(result == ISC_R_SUCCESS);
recv_udp_buffer_size = cfg_obj_asuint32(obj);
CAP_IF_NOT_ZERO(recv_udp_buffer_size, 4096, INT32_MAX);
obj = NULL;
result = named_config_get(maps, "udp-send-buffer", &obj);
INSIST(result == ISC_R_SUCCESS);
send_udp_buffer_size = cfg_obj_asuint32(obj);
CAP_IF_NOT_ZERO(send_udp_buffer_size, 4096, INT32_MAX);
isc_nm_setnetbuffers(named_g_netmgr, recv_tcp_buffer_size,
send_tcp_buffer_size, recv_udp_buffer_size,
send_udp_buffer_size);
#undef CAP_IF_NOT_ZERO
/*
* Configure sets of UDP query source ports.
*/
result = isc_portset_create(named_g_mctx, &v4portset);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"creating UDP/IPv4 port set: %s",
isc_result_totext(result));
goto cleanup_bindkeys_parser;
}
result = isc_portset_create(named_g_mctx, &v6portset);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"creating UDP/IPv6 port set: %s",
isc_result_totext(result));
goto cleanup_v4portset;
}
usev4ports = NULL;
usev6ports = NULL;
avoidv4ports = NULL;
avoidv6ports = NULL;
(void)named_config_get(maps, "use-v4-udp-ports", &usev4ports);
if (usev4ports != NULL) {
portset_fromconf(v4portset, usev4ports, true);
} else {
result = isc_net_getudpportrange(AF_INET, &udpport_low,
&udpport_high);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"get the default UDP/IPv4 port range: %s",
isc_result_totext(result));
goto cleanup_v6portset;
}
if (udpport_low == udpport_high) {
isc_portset_add(v4portset, udpport_low);
} else {
isc_portset_addrange(v4portset, udpport_low,
udpport_high);
}
if (!ns_server_getoption(server->sctx, NS_SERVER_DISABLE4)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"using default UDP/IPv4 port range: "
"[%d, %d]",
udpport_low, udpport_high);
}
}
(void)named_config_get(maps, "avoid-v4-udp-ports", &avoidv4ports);
if (avoidv4ports != NULL) {
portset_fromconf(v4portset, avoidv4ports, false);
}
(void)named_config_get(maps, "use-v6-udp-ports", &usev6ports);
if (usev6ports != NULL) {
portset_fromconf(v6portset, usev6ports, true);
} else {
result = isc_net_getudpportrange(AF_INET6, &udpport_low,
&udpport_high);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"get the default UDP/IPv6 port range: %s",
isc_result_totext(result));
goto cleanup_v6portset;
}
if (udpport_low == udpport_high) {
isc_portset_add(v6portset, udpport_low);
} else {
isc_portset_addrange(v6portset, udpport_low,
udpport_high);
}
if (!ns_server_getoption(server->sctx, NS_SERVER_DISABLE6)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"using default UDP/IPv6 port range: "
"[%d, %d]",
udpport_low, udpport_high);
}
}
(void)named_config_get(maps, "avoid-v6-udp-ports", &avoidv6ports);
if (avoidv6ports != NULL) {
portset_fromconf(v6portset, avoidv6ports, false);
}
dns_dispatchmgr_setavailports(named_g_dispatchmgr, v4portset,
v6portset);
/*
* Set the EDNS UDP size when we don't match a view.
*/
obj = NULL;
result = named_config_get(maps, "edns-udp-size", &obj);
INSIST(result == ISC_R_SUCCESS);
udpsize = cfg_obj_asuint32(obj);
if (udpsize < 512) {
udpsize = 512;
}
if (udpsize > 4096) {
udpsize = 4096;
}
server->sctx->udpsize = (uint16_t)udpsize;
/* Set the transfer message size for TCP */
obj = NULL;
result = named_config_get(maps, "transfer-message-size", &obj);
INSIST(result == ISC_R_SUCCESS);
transfer_message_size = cfg_obj_asuint32(obj);
if (transfer_message_size < 512) {
transfer_message_size = 512;
} else if (transfer_message_size > 65535) {
transfer_message_size = 65535;
}
server->sctx->transfer_tcp_message_size =
(uint16_t)transfer_message_size;
/*
* Configure the zone manager.
*/
obj = NULL;
result = named_config_get(maps, "transfers-in", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_zonemgr_settransfersin(server->zonemgr, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "transfers-per-ns", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_zonemgr_settransfersperns(server->zonemgr, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "notify-rate", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_zonemgr_setnotifyrate(server->zonemgr, cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "startup-notify-rate", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_zonemgr_setstartupnotifyrate(server->zonemgr,
cfg_obj_asuint32(obj));
obj = NULL;
result = named_config_get(maps, "serial-query-rate", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_zonemgr_setserialqueryrate(server->zonemgr, cfg_obj_asuint32(obj));
/*
* Determine which port to use for listening for incoming connections.
*/
if (named_g_port != 0) {
listen_port = named_g_port;
} else {
result = named_config_getport(config, "port", &listen_port);
if (result != ISC_R_SUCCESS) {
goto cleanup_v6portset;
}
}
/*
* Find the listen queue depth.
*/
obj = NULL;
result = named_config_get(maps, "tcp-listen-queue", &obj);
INSIST(result == ISC_R_SUCCESS);
backlog = cfg_obj_asuint32(obj);
if ((backlog > 0) && (backlog < 10)) {
backlog = 10;
}
ns_interfacemgr_setbacklog(server->interfacemgr, backlog);
obj = NULL;
result = named_config_get(maps, "reuseport", &obj);
INSIST(result == ISC_R_SUCCESS);
loadbalancesockets = cfg_obj_asboolean(obj);
#if HAVE_SO_REUSEPORT_LB
if (first_time) {
isc_nm_setloadbalancesockets(named_g_netmgr,
cfg_obj_asboolean(obj));
} else if (loadbalancesockets !=
isc_nm_getloadbalancesockets(named_g_netmgr))
{
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"changing reuseport value requires server restart");
}
#else
if (loadbalancesockets) {
cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING,
"reuseport has no effect on this system");
}
#endif
/*
* Configure the interface manager according to the "listen-on"
* statement.
*/
{
const cfg_obj_t *clistenon = NULL;
ns_listenlist_t *listenon = NULL;
/*
* Even though listen-on is present in the default
* configuration, this way is easier.
*/
if (options != NULL) {
(void)cfg_map_get(options, "listen-on", &clistenon);
}
if (clistenon != NULL) {
result = listenlist_fromconfig(
clistenon, config, named_g_aclconfctx,
named_g_mctx, AF_INET,
server->tlsctx_server_cache, &listenon);
} else {
/*
* Not specified, use default.
*/
result = ns_listenlist_default(named_g_mctx,
listen_port, true,
AF_INET, &listenon);
}
if (result != ISC_R_SUCCESS) {
goto cleanup_v6portset;
}
if (listenon != NULL) {
ns_interfacemgr_setlistenon4(server->interfacemgr,
listenon);
ns_listenlist_detach(&listenon);
}
}
/*
* Ditto for IPv6.
*/
{
const cfg_obj_t *clistenon = NULL;
ns_listenlist_t *listenon = NULL;
if (options != NULL) {
(void)cfg_map_get(options, "listen-on-v6", &clistenon);
}
if (clistenon != NULL) {
result = listenlist_fromconfig(
clistenon, config, named_g_aclconfctx,
named_g_mctx, AF_INET6,
server->tlsctx_server_cache, &listenon);
} else {
/*
* Not specified, use default.
*/
result = ns_listenlist_default(named_g_mctx,
listen_port, true,
AF_INET6, &listenon);
}
if (result != ISC_R_SUCCESS) {
goto cleanup_v6portset;
}
if (listenon != NULL) {
ns_interfacemgr_setlistenon6(server->interfacemgr,
listenon);
ns_listenlist_detach(&listenon);
}
}
if (first_time) {
/*
* Rescan the interface list to pick up changes in the
* listen-on option. This requires the loopmgr to be
* temporarily resumed.
*/
isc_loopmgr_resume(named_g_loopmgr);
result = ns_interfacemgr_scan(server->interfacemgr, true, true);
isc_loopmgr_pause(named_g_loopmgr);
/*
* Check that named is able to TCP listen on at least one
* interface. Otherwise, another named process could be running
* and we should fail.
*/
if (result == ISC_R_ADDRINUSE) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"unable to listen on any configured "
"interfaces");
result = ISC_R_FAILURE;
goto cleanup_v6portset;
}
}
/*
* Arrange for further interface scanning to occur periodically
* as specified by the "interface-interval" option.
*/
obj = NULL;
result = named_config_get(maps, "interface-interval", &obj);
INSIST(result == ISC_R_SUCCESS);
interface_interval = cfg_obj_asduration(obj);
server->interface_interval = interface_interval;
/*
* Enable automatic interface scans.
*/
obj = NULL;
result = named_config_get(maps, "automatic-interface-scan", &obj);
INSIST(result == ISC_R_SUCCESS);
server->sctx->interface_auto = cfg_obj_asboolean(obj);
if (server->sctx->interface_auto) {
if (ns_interfacemgr_dynamic_updates_are_reliable() &&
server->interface_interval != 0)
{
/*
* In some cases the user might expect a certain
* behaviour from the rescan timer, let's try to deduce
* that from the configuration options.
*/
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"Disabling periodic interface re-scans timer");
server->interface_interval = 0;
}
ns_interfacemgr_routeconnect(server->interfacemgr);
} else {
ns_interfacemgr_routedisconnect(server->interfacemgr);
}
if (server->interface_interval == 0) {
isc_timer_stop(server->interface_timer);
} else {
isc_interval_set(&interval, interface_interval, 0);
isc_timer_start(server->interface_timer, isc_timertype_ticker,
&interval);
}
/*
* Configure the dialup heartbeat timer.
*/
obj = NULL;
result = named_config_get(maps, "heartbeat-interval", &obj);
INSIST(result == ISC_R_SUCCESS);
heartbeat_interval = cfg_obj_asuint32(obj) * 60;
if (heartbeat_interval == 0) {
isc_timer_stop(server->heartbeat_timer);
} else if (server->heartbeat_interval != heartbeat_interval) {
isc_interval_set(&interval, heartbeat_interval, 0);
isc_timer_start(server->heartbeat_timer, isc_timertype_ticker,
&interval);
}
server->heartbeat_interval = heartbeat_interval;
isc_interval_set(&interval, 1200, 0);
isc_timer_start(server->pps_timer, isc_timertype_ticker, &interval);
isc_interval_set(&interval, named_g_tat_interval, 0);
isc_timer_start(server->tat_timer, isc_timertype_ticker, &interval);
/*
* Write the PID file.
*/
obj = NULL;
if (named_config_get(maps, "pid-file", &obj) == ISC_R_SUCCESS) {
if (cfg_obj_isvoid(obj)) {
named_os_writepidfile(NULL, first_time);
} else {
named_os_writepidfile(cfg_obj_asstring(obj),
first_time);
}
} else {
named_os_writepidfile(named_g_defaultpidfile, first_time);
}
/*
* Configure the server-wide session key. This must be done before
* configure views because zone configuration may need to know
* session-keyname.
*
* Failure of session key generation isn't fatal at this time; if it
* turns out that a session key is really needed but doesn't exist,
* we'll treat it as a fatal error then.
*/
(void)configure_session_key(maps, server, named_g_mctx, first_time);
/*
* Create the built-in key store ("key-directory").
*/
result = cfg_keystore_fromconfig(NULL, named_g_mctx, named_g_lctx,
named_g_engine, &keystorelist, NULL);
if (result != ISC_R_SUCCESS) {
goto cleanup_keystorelist;
}
/*
* Create the DNSSEC key stores.
*/
keystores = NULL;
(void)cfg_map_get(config, "key-store", &keystores);
for (element = cfg_list_first(keystores); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *kconfig = cfg_listelt_value(element);
keystore = NULL;
result = cfg_keystore_fromconfig(kconfig, named_g_mctx,
named_g_lctx, named_g_engine,
&keystorelist, NULL);
if (result != ISC_R_SUCCESS) {
goto cleanup_keystorelist;
}
}
/*
* Create the built-in kasp policies ("default", "insecure").
*/
kasps = NULL;
(void)cfg_map_get(named_g_config, "dnssec-policy", &kasps);
for (element = cfg_list_first(kasps); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *kconfig = cfg_listelt_value(element);
kasp = NULL;
result = cfg_kasp_fromconfig(kconfig, default_kasp, true,
named_g_mctx, named_g_lctx,
&keystorelist, &kasplist, &kasp);
if (result != ISC_R_SUCCESS) {
goto cleanup_kasplist;
}
INSIST(kasp != NULL);
dns_kasp_freeze(kasp);
/* Insist that the first built-in policy is the default one. */
if (default_kasp == NULL) {
INSIST(strcmp(dns_kasp_getname(kasp), "default") == 0);
dns_kasp_attach(kasp, &default_kasp);
}
dns_kasp_detach(&kasp);
}
INSIST(default_kasp != NULL);
/*
* Create the DNSSEC key and signing policies (KASP).
*/
kasps = NULL;
(void)cfg_map_get(config, "dnssec-policy", &kasps);
for (element = cfg_list_first(kasps); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *kconfig = cfg_listelt_value(element);
kasp = NULL;
result = cfg_kasp_fromconfig(kconfig, default_kasp, true,
named_g_mctx, named_g_lctx,
&keystorelist, &kasplist, &kasp);
if (result != ISC_R_SUCCESS) {
goto cleanup_kasplist;
}
INSIST(kasp != NULL);
dns_kasp_freeze(kasp);
dns_kasp_detach(&kasp);
}
dns_kasp_detach(&default_kasp);
/*
* Save keystore list and kasp list.
*/
tmpkeystorelist = server->keystorelist;
server->keystorelist = keystorelist;
keystorelist = tmpkeystorelist;
tmpkasplist = server->kasplist;
server->kasplist = kasplist;
kasplist = tmpkasplist;
#ifdef USE_DNSRPS
/*
* Find the path to the DNSRPS implementation library.
*/
obj = NULL;
if (named_config_get(maps, "dnsrps-library", &obj) == ISC_R_SUCCESS) {
if (server->dnsrpslib != NULL) {
dns_dnsrps_server_destroy();
isc_mem_free(server->mctx, server->dnsrpslib);
server->dnsrpslib = NULL;
}
setstring(server, &server->dnsrpslib, cfg_obj_asstring(obj));
result = dns_dnsrps_server_create(server->dnsrpslib);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
"initializing DNSRPS RPZ provider '%s': %s",
server->dnsrpslib, isc_result_totext(result));
/*
* It's okay if librpz isn't available. We'll complain
* later if it turns out to be needed for a view with
* "dnsrps-enable yes".
*/
if (result == ISC_R_FILENOTFOUND) {
result = ISC_R_SUCCESS;
}
CHECKFATAL(result, "initializing RPZ service interface");
}
#endif /* ifdef USE_DNSRPS */
/*
* Configure the views.
*/
views = NULL;
(void)cfg_map_get(config, "view", &views);
/*
* Create the views.
*/
for (element = cfg_list_first(views); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *vconfig = cfg_listelt_value(element);
dns_view_t *view = NULL;
result = create_view(vconfig, &viewlist, &view);
if (result != ISC_R_SUCCESS) {
goto cleanup_viewlist;
}
INSIST(view != NULL);
result = setup_newzones(view, config, vconfig, conf_parser,
named_g_aclconfctx);
dns_view_detach(&view);
if (result != ISC_R_SUCCESS) {
goto cleanup_viewlist;
}
}
/*
* If there were no explicit views then we do the default
* view here.
*/
if (views == NULL) {
dns_view_t *view = NULL;
result = create_view(NULL, &viewlist, &view);
if (result != ISC_R_SUCCESS) {
goto cleanup_viewlist;
}
INSIST(view != NULL);
result = setup_newzones(view, config, NULL, conf_parser,
named_g_aclconfctx);
dns_view_detach(&view);
if (result != ISC_R_SUCCESS) {
goto cleanup_viewlist;
}
}
/*
* Configure and freeze all explicit views. Explicit
* views that have zones were already created at parsing
* time, but views with no zones must be created here.
*/
for (element = cfg_list_first(views); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *vconfig = cfg_listelt_value(element);
dns_view_t *view = NULL;
view = NULL;
result = find_view(vconfig, &viewlist, &view);
if (result != ISC_R_SUCCESS) {
goto cleanup_cachelist;
}
result = configure_view(view, &viewlist, config, vconfig,
&cachelist, &server->cachelist,
&server->kasplist,
&server->keystorelist, bindkeys,
named_g_mctx, named_g_aclconfctx, true);
if (result != ISC_R_SUCCESS) {
dns_view_detach(&view);
goto cleanup_cachelist;
}
dns_view_freeze(view);
dns_view_detach(&view);
}
/*
* Make sure we have a default view if and only if there
* were no explicit views.
*/
if (views == NULL) {
dns_view_t *view = NULL;
result = find_view(NULL, &viewlist, &view);
if (result != ISC_R_SUCCESS) {
goto cleanup_cachelist;
}
result = configure_view(view, &viewlist, config, NULL,
&cachelist, &server->cachelist,
&server->kasplist,
&server->keystorelist, bindkeys,
named_g_mctx, named_g_aclconfctx, true);
if (result != ISC_R_SUCCESS) {
dns_view_detach(&view);
goto cleanup_cachelist;
}
dns_view_freeze(view);
dns_view_detach(&view);
}
/*
* Create (or recreate) the built-in views.
*/
builtin_views = NULL;
RUNTIME_CHECK(cfg_map_get(named_g_config, "view", &builtin_views) ==
ISC_R_SUCCESS);
for (element = cfg_list_first(builtin_views); element != NULL;
element = cfg_list_next(element))
{
cfg_obj_t *vconfig = cfg_listelt_value(element);
dns_view_t *view = NULL;
result = create_view(vconfig, &builtin_viewlist, &view);
if (result != ISC_R_SUCCESS) {
goto cleanup_cachelist;
}
result = configure_view(
view, &viewlist, config, vconfig, &cachelist,
&server->cachelist, &server->kasplist,
&server->keystorelist, bindkeys, named_g_mctx,
named_g_aclconfctx, false);
if (result != ISC_R_SUCCESS) {
dns_view_detach(&view);
goto cleanup_cachelist;
}
dns_view_freeze(view);
dns_view_detach(&view);
}
/* Now combine the two viewlists into one */
ISC_LIST_APPENDLIST(viewlist, builtin_viewlist, link);
/*
* Commit any dns_zone_setview() calls on all zones in the new
* view.
*/
for (dns_view_t *view = ISC_LIST_HEAD(viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
dns_view_setviewcommit(view);
}
/* Swap our new view list with the production one. */
tmpviewlist = server->viewlist;
server->viewlist = viewlist;
viewlist = tmpviewlist;
/* Make the view list available to each of the views */
for (dns_view_t *view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
view->viewlist = &server->viewlist;
}
/* Swap our new cache list with the production one. */
tmpcachelist = server->cachelist;
server->cachelist = cachelist;
cachelist = tmpcachelist;
/* Load the TKEY information from the configuration. */
if (options != NULL) {
dns_tkeyctx_t *tkeyctx = NULL;
result = named_tkeyctx_fromconfig(options, named_g_mctx,
&tkeyctx);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"configuring TKEY: %s",
isc_result_totext(result));
goto cleanup_cachelist;
}
if (server->sctx->tkeyctx != NULL) {
dns_tkeyctx_destroy(&server->sctx->tkeyctx);
}
server->sctx->tkeyctx = tkeyctx;
}
#ifdef HAVE_LMDB
/*
* If we're using LMDB, we may have created newzones databases
* as root, making it impossible to reopen them later after
* switching to a new userid. We close them now, and reopen
* after relinquishing privileges them.
*/
if (first_time) {
for (dns_view_t *view = ISC_LIST_HEAD(server->viewlist);
view != NULL; view = ISC_LIST_NEXT(view, link))
{
nzd_env_close(view);
}
}
#endif /* HAVE_LMDB */
/*
* Switch to the effective UID for setting up files.
* Later, after configuring all the listening ports,
* we'll relinquish root privileges permanently.
*/
if (first_time) {
named_os_changeuser(false);
}
/*
* Check that the working directory is writable.
*/
if (!isc_file_isdirwritable(".")) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"the working directory is not writable");
result = ISC_R_NOPERM;
goto cleanup_cachelist;
}
#ifdef HAVE_LMDB
/*
* Reopen NZD databases.
*/
if (first_time) {
for (dns_view_t *view = ISC_LIST_HEAD(server->viewlist);
view != NULL; view = ISC_LIST_NEXT(view, link))
{
nzd_env_reopen(view);
}
}
#endif /* HAVE_LMDB */
/*
* Configure the logging system.
*
* Do this after changing UID to make sure that any log
* files specified in named.conf get created by the
* unprivileged user, not root.
*/
if (named_g_logstderr) {
const cfg_obj_t *logobj = NULL;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"not using config file logging "
"statement for logging due to "
"-g option");
(void)cfg_map_get(config, "logging", &logobj);
if (logobj != NULL) {
result = named_logconfig(NULL, logobj);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"checking logging configuration "
"failed: %s",
isc_result_totext(result));
goto cleanup_cachelist;
}
}
} else {
const cfg_obj_t *logobj = NULL;
isc_logconfig_create(named_g_lctx, &logc);
logobj = NULL;
(void)cfg_map_get(config, "logging", &logobj);
if (logobj != NULL) {
result = named_logconfig(logc, logobj);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"configuring logging: %s",
isc_result_totext(result));
goto cleanup_logc;
}
} else {
named_log_setdefaultchannels(logc);
named_log_setdefaultsslkeylogfile(logc);
result = named_log_setunmatchedcategory(logc);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"setting up default 'category "
"unmatched': %s",
isc_result_totext(result));
goto cleanup_logc;
}
result = named_log_setdefaultcategory(logc);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"setting up default 'category "
"default': %s",
isc_result_totext(result));
goto cleanup_logc;
}
}
isc_logconfig_use(named_g_lctx, logc);
logc = NULL;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
"now using logging configuration from "
"config file");
}
/*
* Set the default value of the query logging flag depending
* whether a "queries" category has been defined. This is
* a disgusting hack, but we need to do this for BIND 8
* compatibility.
*/
if (first_time) {
const cfg_obj_t *logobj = NULL;
const cfg_obj_t *categories = NULL;
obj = NULL;
if (named_config_get(maps, "querylog", &obj) == ISC_R_SUCCESS) {
ns_server_setoption(server->sctx, NS_SERVER_LOGQUERIES,
cfg_obj_asboolean(obj));
} else {
(void)cfg_map_get(config, "logging", &logobj);
if (logobj != NULL) {
(void)cfg_map_get(logobj, "category",
&categories);
}
if (categories != NULL) {
for (element = cfg_list_first(categories);
element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *catobj;
const char *str;
obj = cfg_listelt_value(element);
catobj = cfg_tuple_get(obj, "name");
str = cfg_obj_asstring(catobj);
if (strcasecmp(str, "queries") == 0) {
ns_server_setoption(
server->sctx,
NS_SERVER_LOGQUERIES,
true);
}
}
}
}
obj = NULL;
result = named_config_get(maps, "responselog", &obj);
if (result == ISC_R_SUCCESS) {
ns_server_setoption(server->sctx,
NS_SERVER_LOGRESPONSES,
cfg_obj_asboolean(obj));
}
}
obj = NULL;
if (options != NULL &&
cfg_map_get(options, "memstatistics", &obj) == ISC_R_SUCCESS)
{
named_g_memstatistics = cfg_obj_asboolean(obj);
} else {
named_g_memstatistics =
((isc_mem_debugging & ISC_MEM_DEBUGRECORD) != 0);
}
obj = NULL;
if (named_config_get(maps, "memstatistics-file", &obj) == ISC_R_SUCCESS)
{
named_main_setmemstats(cfg_obj_asstring(obj));
} else if (named_g_memstatistics) {
named_main_setmemstats("named.memstats");
} else {
named_main_setmemstats(NULL);
}
obj = NULL;
result = named_config_get(maps, "statistics-file", &obj);
INSIST(result == ISC_R_SUCCESS);
setstring(server, &server->statsfile, cfg_obj_asstring(obj));
obj = NULL;
result = named_config_get(maps, "dump-file", &obj);
INSIST(result == ISC_R_SUCCESS);
setstring(server, &server->dumpfile, cfg_obj_asstring(obj));
obj = NULL;
result = named_config_get(maps, "secroots-file", &obj);
INSIST(result == ISC_R_SUCCESS);
setstring(server, &server->secrootsfile, cfg_obj_asstring(obj));
obj = NULL;
result = named_config_get(maps, "recursing-file", &obj);
INSIST(result == ISC_R_SUCCESS);
setstring(server, &server->recfile, cfg_obj_asstring(obj));
obj = NULL;
result = named_config_get(maps, "version", &obj);
if (result == ISC_R_SUCCESS) {
setoptstring(server, &server->version, obj);
server->version_set = true;
} else {
server->version_set = false;
}
obj = NULL;
result = named_config_get(maps, "hostname", &obj);
if (result == ISC_R_SUCCESS) {
setoptstring(server, &server->hostname, obj);
server->hostname_set = true;
} else {
server->hostname_set = false;
}
obj = NULL;
result = named_config_get(maps, "server-id", &obj);
server->sctx->usehostname = false;
if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) {
/* The parser translates "hostname" to true */
server->sctx->usehostname = true;
result = ns_server_setserverid(server->sctx, NULL);
} else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) {
/* Found a quoted string */
result = ns_server_setserverid(server->sctx,
cfg_obj_asstring(obj));
} else {
result = ns_server_setserverid(server->sctx, NULL);
}
RUNTIME_CHECK(result == ISC_R_SUCCESS);
obj = NULL;
result = named_config_get(maps, "flush-zones-on-shutdown", &obj);
if (result == ISC_R_SUCCESS) {
server->flushonshutdown = cfg_obj_asboolean(obj);
} else {
server->flushonshutdown = false;
}
obj = NULL;
result = named_config_get(maps, "answer-cookie", &obj);
INSIST(result == ISC_R_SUCCESS);
server->sctx->answercookie = cfg_obj_asboolean(obj);
obj = NULL;
result = named_config_get(maps, "cookie-algorithm", &obj);
INSIST(result == ISC_R_SUCCESS);
if (strcasecmp(cfg_obj_asstring(obj), "siphash24") == 0) {
server->sctx->cookiealg = ns_cookiealg_siphash24;
} else {
UNREACHABLE();
}
obj = NULL;
result = named_config_get(maps, "cookie-secret", &obj);
if (result == ISC_R_SUCCESS) {
const char *str;
bool first = true;
isc_buffer_t b;
unsigned int usedlength;
unsigned int expectedlength;
for (element = cfg_list_first(obj); element != NULL;
element = cfg_list_next(element))
{
obj = cfg_listelt_value(element);
str = cfg_obj_asstring(obj);
if (first) {
memset(server->sctx->secret, 0,
sizeof(server->sctx->secret));
isc_buffer_init(&b, server->sctx->secret,
sizeof(server->sctx->secret));
result = isc_hex_decodestring(str, &b);
if (result != ISC_R_SUCCESS &&
result != ISC_R_NOSPACE)
{
goto cleanup_altsecrets;
}
first = false;
} else {
altsecret = isc_mem_get(server->sctx->mctx,
sizeof(*altsecret));
isc_buffer_init(&b, altsecret->secret,
sizeof(altsecret->secret));
result = isc_hex_decodestring(str, &b);
if (result != ISC_R_SUCCESS &&
result != ISC_R_NOSPACE)
{
isc_mem_put(server->sctx->mctx,
altsecret,
sizeof(*altsecret));
goto cleanup_altsecrets;
}
ISC_LIST_INITANDAPPEND(altsecrets, altsecret,
link);
}
usedlength = isc_buffer_usedlength(&b);
switch (server->sctx->cookiealg) {
case ns_cookiealg_siphash24:
expectedlength = ISC_SIPHASH24_KEY_LENGTH;
if (usedlength != expectedlength) {
result = ISC_R_RANGE;
isc_log_write(
named_g_lctx,
NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER,
ISC_LOG_ERROR,
"SipHash-2-4 cookie-secret "
"must be 128 bits: %s",
isc_result_totext(result));
goto cleanup_altsecrets;
}
break;
}
}
} else {
isc_nonce_buf(server->sctx->secret,
sizeof(server->sctx->secret));
}
/*
* Swap altsecrets lists.
*/
tmpaltsecrets = server->sctx->altsecrets;
server->sctx->altsecrets = altsecrets;
altsecrets = tmpaltsecrets;
(void)named_server_loadnta(server);
#ifdef USE_DNSRPS
/*
* Start and connect to the DNS Response Policy Service
* daemon, dnsrpzd, for each view that uses DNSRPS.
*/
for (dns_view_t *view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
result = dns_dnsrps_connect(view->rpzs);
if (result != ISC_R_SUCCESS) {
view = NULL;
goto cleanup_altsecrets;
}
}
#endif /* ifdef USE_DNSRPS */
/*
* Record the time of most recent configuration
*/
named_g_configtime = isc_time_now();
isc_loopmgr_resume(named_g_loopmgr);
exclusive = false;
/* Take back root privileges temporarily */
if (first_time) {
named_os_restoreuser();
}
/* Configure the statistics channel(s) */
result = named_statschannels_configure(named_g_server, config,
named_g_aclconfctx);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"configuring statistics server(s): %s",
isc_result_totext(result));
goto cleanup_altsecrets;
}
/*
* Bind the control port(s).
*/
result = named_controls_configure(named_g_server->controls, config,
named_g_aclconfctx);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"binding control channel(s): %s",
isc_result_totext(result));
goto cleanup_altsecrets;
}
(void)ns_interfacemgr_scan(server->interfacemgr, true, true);
/*
* Permanently drop root privileges now.
*/
if (first_time) {
named_os_changeuser(true);
}
/*
* These cleans up either the old production view list
* or our temporary list depending on whether they
* were swapped above or not.
*/
cleanup_altsecrets:
while ((altsecret = ISC_LIST_HEAD(altsecrets)) != NULL) {
ISC_LIST_UNLINK(altsecrets, altsecret, link);
isc_mem_put(server->sctx->mctx, altsecret, sizeof(*altsecret));
}
cleanup_logc:
if (logc != NULL) {
isc_logconfig_destroy(&logc);
}
cleanup_cachelist:
while ((nsc = ISC_LIST_HEAD(cachelist)) != NULL) {
ISC_LIST_UNLINK(cachelist, nsc, link);
dns_cache_detach(&nsc->cache);
isc_mem_put(server->mctx, nsc, sizeof(*nsc));
}
ISC_LIST_APPENDLIST(viewlist, builtin_viewlist, link);
cleanup_viewlist:
for (dns_view_t *view = ISC_LIST_HEAD(viewlist); view != NULL;
view = view_next)
{
view_next = ISC_LIST_NEXT(view, link);
ISC_LIST_UNLINK(viewlist, view, link);
if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind") != 0)
{
dns_view_setviewrevert(view);
(void)dns_view_apply(view, false, NULL, removed, view);
}
dns_view_detach(&view);
}
cleanup_kasplist:
for (kasp = ISC_LIST_HEAD(kasplist); kasp != NULL; kasp = kasp_next) {
kasp_next = ISC_LIST_NEXT(kasp, link);
ISC_LIST_UNLINK(kasplist, kasp, link);
dns_kasp_detach(&kasp);
}
cleanup_keystorelist:
for (keystore = ISC_LIST_HEAD(keystorelist); keystore != NULL;
keystore = keystore_next)
{
keystore_next = ISC_LIST_NEXT(keystore, link);
ISC_LIST_UNLINK(keystorelist, keystore, link);
dns_keystore_detach(&keystore);
}
cleanup_v6portset:
isc_portset_destroy(named_g_mctx, &v6portset);
cleanup_v4portset:
isc_portset_destroy(named_g_mctx, &v4portset);
cleanup_bindkeys_parser:
if (bindkeys_parser != NULL) {
if (bindkeys != NULL) {
cfg_obj_destroy(bindkeys_parser, &bindkeys);
}
cfg_parser_destroy(&bindkeys_parser);
}
cleanup_config:
cfg_obj_destroy(conf_parser, &config);
cleanup_conf_parser:
cfg_parser_destroy(&conf_parser);
cleanup_exclusive:
if (exclusive) {
isc_loopmgr_resume(named_g_loopmgr);
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
"load_configuration: %s", isc_result_totext(result));
return result;
}
static isc_result_t
view_loaded(void *arg) {
isc_result_t result;
ns_zoneload_t *zl = (ns_zoneload_t *)arg;
/*
* Force zone maintenance. Do this after loading
* so that we know when we need to force AXFR of
* secondary zones whose master files are missing.
*
* We use the zoneload reference counter to let us
* know when all views are finished.
*/
if (isc_refcount_decrement(&zl->refs) == 1) {
named_server_t *server = zl->server;
bool reconfig = zl->reconfig;
dns_view_t *view = NULL;
isc_refcount_destroy(&zl->refs);
isc_mem_put(server->mctx, zl, sizeof(*zl));
/*
* To maintain compatibility with log parsing tools that might
* be looking for this string after "rndc reconfig", we keep it
* as it is
*/
if (reconfig) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"any newly configured zones are now "
"loaded");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE,
"all zones loaded");
}
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (view->managed_keys != NULL) {
result = dns_zone_synckeyzone(
view->managed_keys);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx,
DNS_LOGCATEGORY_DNSSEC,
DNS_LOGMODULE_DNSSEC,
ISC_LOG_ERROR,
"failed to initialize "
"managed-keys for view %s "
"(%s): DNSSEC validation is "
"at risk",
view->name,
isc_result_totext(result));
}
}
}
CHECKFATAL(dns_zonemgr_forcemaint(server->zonemgr),
"forcing zone maintenance");
named_os_started();
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE,
"FIPS mode is %s",
isc_fips_mode() ? "enabled" : "disabled");
#if HAVE_LIBSYSTEMD
sd_notifyf(0,
"READY=1\n"
"STATUS=running\n"
"MAINPID=%" PRId64 "\n",
(int64_t)getpid());
#endif /* HAVE_LIBSYSTEMD */
atomic_store(&server->reload_status, NAMED_RELOAD_DONE);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE,
"running");
}
return ISC_R_SUCCESS;
}
static isc_result_t
load_zones(named_server_t *server, bool reconfig) {
isc_result_t result = ISC_R_SUCCESS;
ns_zoneload_t *zl = NULL;
dns_view_t *view = NULL;
zl = isc_mem_get(server->mctx, sizeof(*zl));
zl->server = server;
zl->reconfig = reconfig;
isc_loopmgr_pause(named_g_loopmgr);
isc_refcount_init(&zl->refs, 1);
/*
* Schedule zones to be loaded from disk.
*/
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (view->managed_keys != NULL) {
result = dns_zone_load(view->managed_keys, false);
if (result != ISC_R_SUCCESS &&
result != DNS_R_UPTODATE &&
result != DNS_R_CONTINUE)
{
goto cleanup;
}
}
if (view->redirect != NULL) {
result = dns_zone_load(view->redirect, false);
if (result != ISC_R_SUCCESS &&
result != DNS_R_UPTODATE &&
result != DNS_R_CONTINUE)
{
goto cleanup;
}
}
/*
* 'dns_view_asyncload' calls view_loaded if there are no
* zones.
*/
isc_refcount_increment(&zl->refs);
result = dns_view_asyncload(view, reconfig, view_loaded, zl);
if (result != ISC_R_SUCCESS) {
isc_refcount_decrement1(&zl->refs);
goto cleanup;
}
}
cleanup:
if (isc_refcount_decrement(&zl->refs) == 1) {
isc_refcount_destroy(&zl->refs);
isc_mem_put(server->mctx, zl, sizeof(*zl));
}
isc_loopmgr_resume(named_g_loopmgr);
return result;
}
static void
run_server(void *arg) {
isc_result_t result;
named_server_t *server = (named_server_t *)arg;
dns_geoip_databases_t *geoip = NULL;
dns_zonemgr_create(named_g_mctx, named_g_netmgr, &server->zonemgr);
CHECKFATAL(dns_dispatchmgr_create(named_g_mctx, named_g_loopmgr,
named_g_netmgr, &named_g_dispatchmgr),
"creating dispatch manager");
dns_dispatchmgr_setstats(named_g_dispatchmgr, server->resolverstats);
#if defined(HAVE_GEOIP2)
geoip = named_g_geoip;
#else /* if defined(HAVE_GEOIP2) */
geoip = NULL;
#endif /* if defined(HAVE_GEOIP2) */
CHECKFATAL(ns_interfacemgr_create(named_g_mctx, server->sctx,
named_g_loopmgr, named_g_netmgr,
named_g_dispatchmgr, geoip,
&server->interfacemgr),
"creating interface manager");
isc_timer_create(named_g_mainloop, interface_timer_tick, server,
&server->interface_timer);
isc_timer_create(named_g_mainloop, heartbeat_timer_tick, server,
&server->heartbeat_timer);
isc_timer_create(named_g_mainloop, tat_timer_tick, server,
&server->tat_timer);
isc_timer_create(named_g_mainloop, pps_timer_tick, server,
&server->pps_timer);
CHECKFATAL(
cfg_parser_create(named_g_mctx, named_g_lctx, &named_g_parser),
"creating default configuration parser");
CHECKFATAL(cfg_parser_create(named_g_mctx, named_g_lctx,
&named_g_addparser),
"creating additional configuration parser");
CHECKFATAL(load_configuration(named_g_conffile, server, true),
"loading configuration");
CHECKFATAL(load_zones(server, false), "loading zones");
#ifdef ENABLE_AFL
named_g_run_done = true;
#endif /* ifdef ENABLE_AFL */
}
void
named_server_flushonshutdown(named_server_t *server, bool flush) {
REQUIRE(NAMED_SERVER_VALID(server));
server->flushonshutdown = flush;
}
static void
shutdown_server(void *arg) {
named_server_t *server = (named_server_t *)arg;
dns_view_t *view = NULL, *view_next = NULL;
dns_kasp_t *kasp = NULL, *kasp_next = NULL;
dns_keystore_t *keystore = NULL, *keystore_next = NULL;
bool flush = server->flushonshutdown;
named_cache_t *nsc = NULL;
#if HAVE_LIBSYSTEMD
sd_notify(0, "STOPPING=1\n");
#endif /* HAVE_LIBSYSTEMD */
isc_signal_stop(server->sighup);
isc_signal_destroy(&server->sighup);
/*
* We need to shutdown the interface before going
* exclusive (which would pause the netmgr).
*/
ns_interfacemgr_shutdown(server->interfacemgr);
named_controls_shutdown(server->controls);
named_statschannels_shutdown(server);
isc_loopmgr_pause(named_g_loopmgr);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, "shutting down%s",
flush ? ": flushing changes" : "");
cleanup_session_key(server, server->mctx);
if (named_g_aclconfctx != NULL) {
cfg_aclconfctx_detach(&named_g_aclconfctx);
}
cfg_obj_destroy(named_g_parser, &named_g_config);
cfg_parser_destroy(&named_g_parser);
cfg_parser_destroy(&named_g_addparser);
(void)named_server_saventa(server);
for (kasp = ISC_LIST_HEAD(server->kasplist); kasp != NULL;
kasp = kasp_next)
{
kasp_next = ISC_LIST_NEXT(kasp, link);
ISC_LIST_UNLINK(server->kasplist, kasp, link);
dns_kasp_detach(&kasp);
}
for (keystore = ISC_LIST_HEAD(server->keystorelist); keystore != NULL;
keystore = keystore_next)
{
keystore_next = ISC_LIST_NEXT(keystore, link);
ISC_LIST_UNLINK(server->keystorelist, keystore, link);
dns_keystore_detach(&keystore);
}
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = view_next)
{
view_next = ISC_LIST_NEXT(view, link);
ISC_LIST_UNLINK(server->viewlist, view, link);
dns_view_flushonshutdown(view, flush);
dns_view_detach(&view);
}
/*
* Shut down all dyndb instances.
*/
dns_dyndb_cleanup(true);
while ((nsc = ISC_LIST_HEAD(server->cachelist)) != NULL) {
ISC_LIST_UNLINK(server->cachelist, nsc, link);
dns_cache_detach(&nsc->cache);
isc_mem_put(server->mctx, nsc, sizeof(*nsc));
}
isc_timer_destroy(&server->interface_timer);
isc_timer_destroy(&server->heartbeat_timer);
isc_timer_destroy(&server->pps_timer);
isc_timer_destroy(&server->tat_timer);
ns_interfacemgr_detach(&server->interfacemgr);
dns_dispatchmgr_detach(&named_g_dispatchmgr);
dns_zonemgr_shutdown(server->zonemgr);
#if defined(HAVE_GEOIP2)
named_geoip_shutdown();
#endif /* HAVE_GEOIP2 */
dns_db_detach(&server->in_roothints);
isc_loopmgr_resume(named_g_loopmgr);
}
static isc_result_t
get_matching_view_sync(isc_netaddr_t *srcaddr, isc_netaddr_t *destaddr,
dns_message_t *message, dns_aclenv_t *env,
isc_result_t *sigresult, dns_view_t **viewp) {
dns_view_t *view;
/*
* We should not be running synchronous view matching if signature
* checking involves SIG(0). TSIG has priority of SIG(0), so if TSIG
* is set then we proceed anyway.
*/
INSIST(message->tsigkey != NULL || message->tsig != NULL ||
message->sig0 == NULL);
for (view = ISC_LIST_HEAD(named_g_server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (message->rdclass == view->rdclass ||
message->rdclass == dns_rdataclass_any)
{
const dns_name_t *tsig = NULL;
dns_message_resetsig(message);
*sigresult = dns_message_checksig(message, view);
if (*sigresult == ISC_R_SUCCESS) {
tsig = dns_tsigkey_identity(message->tsigkey);
}
if (dns_acl_allowed(srcaddr, tsig, view->matchclients,
env) &&
dns_acl_allowed(destaddr, tsig,
view->matchdestinations, env) &&
!(view->matchrecursiveonly &&
(message->flags & DNS_MESSAGEFLAG_RD) == 0))
{
dns_view_attach(view, viewp);
return ISC_R_SUCCESS;
}
}
}
return ISC_R_NOTFOUND;
}
static void
get_matching_view_done(void *cbarg) {
matching_view_ctx_t *mvctx = cbarg;
dns_message_t *message = mvctx->message;
if (*mvctx->viewmatchresult == ISC_R_SUCCESS) {
INSIST(mvctx->view != NULL);
dns_view_attach(mvctx->view, mvctx->viewp);
}
mvctx->cb(mvctx->cbarg);
if (mvctx->quota_result == ISC_R_SUCCESS) {
isc_quota_release(&mvctx->sctx->sig0checksquota);
}
if (mvctx->view != NULL) {
dns_view_detach(&mvctx->view);
}
isc_loop_detach(&mvctx->loop);
ns_server_detach(&mvctx->sctx);
isc_mem_put(message->mctx, mvctx, sizeof(*mvctx));
dns_message_detach(&message);
}
static dns_view_t *
get_matching_view_next(dns_view_t *view, dns_rdataclass_t rdclass) {
if (view == NULL) {
view = ISC_LIST_HEAD(named_g_server->viewlist);
} else {
view = ISC_LIST_NEXT(view, link);
}
while (true) {
if (view == NULL || rdclass == view->rdclass ||
rdclass == dns_rdataclass_any)
{
return view;
}
view = ISC_LIST_NEXT(view, link);
};
}
static void
get_matching_view_continue(void *cbarg, isc_result_t result) {
matching_view_ctx_t *mvctx = cbarg;
dns_view_t *view = NULL;
const dns_name_t *tsig = NULL;
*mvctx->sigresult = result;
if (result == ISC_R_SUCCESS) {
tsig = dns_tsigkey_identity(mvctx->message->tsigkey);
}
if (dns_acl_allowed(mvctx->srcaddr, tsig, mvctx->view->matchclients,
mvctx->env) &&
dns_acl_allowed(mvctx->destaddr, tsig,
mvctx->view->matchdestinations, mvctx->env) &&
!(mvctx->view->matchrecursiveonly &&
(mvctx->message->flags & DNS_MESSAGEFLAG_RD) == 0))
{
/*
* A matching view is found.
*/
*mvctx->viewmatchresult = ISC_R_SUCCESS;
get_matching_view_done(cbarg);
return;
}
dns_message_resetsig(mvctx->message);
view = get_matching_view_next(mvctx->view, mvctx->message->rdclass);
dns_view_detach(&mvctx->view);
if (view != NULL) {
/*
* Try the next view.
*/
dns_view_attach(view, &mvctx->view);
result = dns_message_checksig_async(
mvctx->message, view, mvctx->loop,
get_matching_view_continue, mvctx);
INSIST(result == DNS_R_WAIT);
return;
}
/*
* No matching view is found.
*/
*mvctx->viewmatchresult = ISC_R_NOTFOUND;
get_matching_view_done(cbarg);
}
/*%
* Find a view that matches the source and destination addresses of a query.
*/
static isc_result_t
get_matching_view(isc_netaddr_t *srcaddr, isc_netaddr_t *destaddr,
dns_message_t *message, dns_aclenv_t *env, ns_server_t *sctx,
isc_loop_t *loop, isc_job_cb cb, void *cbarg,
isc_result_t *sigresult, isc_result_t *viewmatchresult,
dns_view_t **viewp) {
dns_view_t *view = NULL;
isc_result_t result;
REQUIRE(message != NULL);
REQUIRE(sctx != NULL);
REQUIRE(loop == NULL || cb != NULL);
REQUIRE(sigresult != NULL);
REQUIRE(viewmatchresult != NULL);
REQUIRE(viewp != NULL && *viewp == NULL);
/* No offloading is requested if the loop is unset. */
if (loop == NULL) {
*viewmatchresult = get_matching_view_sync(
srcaddr, destaddr, message, env, sigresult, viewp);
return *viewmatchresult;
}
/* Also no offloading when there is no view at all to match against. */
view = get_matching_view_next(NULL, message->rdclass);
if (view == NULL) {
*viewmatchresult = ISC_R_NOTFOUND;
return *viewmatchresult;
}
dns_message_resetsig(message);
matching_view_ctx_t *mvctx = isc_mem_get(message->mctx, sizeof(*mvctx));
*mvctx = (matching_view_ctx_t){
.srcaddr = srcaddr,
.destaddr = destaddr,
.env = env,
.cb = cb,
.cbarg = cbarg,
.sigresult = sigresult,
.viewmatchresult = viewmatchresult,
.quota_result = ISC_R_UNSET,
.viewp = viewp,
};
ns_server_attach(sctx, &mvctx->sctx);
isc_loop_attach(loop, &mvctx->loop);
dns_message_attach(message, &mvctx->message);
/*
* If the message has a SIG0 signature which we are going to
* check, and the client is not exempt from the SIG(0) quota,
* then acquire a quota. TSIG has priority over SIG(0), so if
* TSIG is set then we don't care.
*/
if (message->tsigkey == NULL && message->tsig == NULL &&
message->sig0 != NULL)
{
if (sctx->sig0checksquota_exempt != NULL) {
int exempt_match;
result = dns_acl_match(srcaddr, NULL,
sctx->sig0checksquota_exempt,
env, &exempt_match, NULL);
if (result == ISC_R_SUCCESS && exempt_match > 0) {
mvctx->quota_result = ISC_R_EXISTS;
}
}
if (mvctx->quota_result == ISC_R_UNSET) {
mvctx->quota_result =
isc_quota_acquire(&sctx->sig0checksquota);
}
if (mvctx->quota_result == ISC_R_SOFTQUOTA) {
isc_quota_release(&sctx->sig0checksquota);
}
if (mvctx->quota_result != ISC_R_SUCCESS &&
mvctx->quota_result != ISC_R_EXISTS)
{
*mvctx->viewmatchresult = ISC_R_QUOTA;
isc_async_run(loop, get_matching_view_done, mvctx);
return DNS_R_WAIT;
}
}
dns_view_attach(view, &mvctx->view);
result = dns_message_checksig_async(message, view, loop,
get_matching_view_continue, mvctx);
INSIST(result == DNS_R_WAIT);
return DNS_R_WAIT;
}
void
named_server_create(isc_mem_t *mctx, named_server_t **serverp) {
isc_result_t result;
named_server_t *server = isc_mem_get(mctx, sizeof(*server));
*server = (named_server_t){
.mctx = mctx,
.statsfile = isc_mem_strdup(mctx, "named.stats"),
.dumpfile = isc_mem_strdup(mctx, "named_dump.db"),
.secrootsfile = isc_mem_strdup(mctx, "named.secroots"),
.recfile = isc_mem_strdup(mctx, "named.recursing"),
};
/* Initialize server data structures. */
ISC_LIST_INIT(server->kasplist);
ISC_LIST_INIT(server->keystorelist);
ISC_LIST_INIT(server->viewlist);
/* Must be first. */
CHECKFATAL(dst_lib_init(named_g_mctx, named_g_engine),
"initializing DST");
CHECKFATAL(dns_rootns_create(mctx, dns_rdataclass_in, NULL,
&server->in_roothints),
"setting up root hints");
atomic_init(&server->reload_status, NAMED_RELOAD_IN_PROGRESS);
ns_server_create(mctx, get_matching_view, &server->sctx);
#if defined(HAVE_GEOIP2)
/*
* GeoIP must be initialized before the interface
* manager (which includes the ACL environment)
* is created.
*/
named_geoip_init();
#endif /* HAVE_GEOIP2 */
#ifdef ENABLE_AFL
server->sctx->fuzztype = named_g_fuzz_type;
server->sctx->fuzznotify = named_fuzz_notify;
#endif /* ifdef ENABLE_AFL */
named_g_mainloop = isc_loop_main(named_g_loopmgr);
isc_loop_setup(named_g_mainloop, run_server, server);
isc_loop_teardown(named_g_mainloop, shutdown_server, server);
/* Add SIGHUP reload handler */
server->sighup = isc_signal_new(
named_g_loopmgr, named_server_reloadwanted, server, SIGHUP);
isc_stats_create(server->mctx, &server->sockstats,
isc_sockstatscounter_max);
isc_nm_setstats(named_g_netmgr, server->sockstats);
isc_stats_create(named_g_mctx, &server->zonestats,
dns_zonestatscounter_max);
isc_stats_create(named_g_mctx, &server->resolverstats,
dns_resstatscounter_max);
CHECKFATAL(named_controls_create(server, &server->controls),
"named_controls_create");
ISC_LIST_INIT(server->statschannels);
ISC_LIST_INIT(server->cachelist);
server->magic = NAMED_SERVER_MAGIC;
*serverp = server;
}
void
named_server_destroy(named_server_t **serverp) {
named_server_t *server = *serverp;
REQUIRE(NAMED_SERVER_VALID(server));
#ifdef HAVE_DNSTAP
if (server->dtenv != NULL) {
dns_dt_detach(&server->dtenv);
}
#endif /* HAVE_DNSTAP */
#ifdef USE_DNSRPS
dns_dnsrps_server_destroy();
isc_mem_free(server->mctx, server->dnsrpslib);
#endif /* ifdef USE_DNSRPS */
named_controls_destroy(&server->controls);
isc_stats_detach(&server->zonestats);
isc_stats_detach(&server->sockstats);
isc_stats_detach(&server->resolverstats);
if (server->sctx != NULL) {
ns_server_detach(&server->sctx);
}
isc_mem_free(server->mctx, server->statsfile);
isc_mem_free(server->mctx, server->dumpfile);
isc_mem_free(server->mctx, server->secrootsfile);
isc_mem_free(server->mctx, server->recfile);
if (server->bindkeysfile != NULL) {
isc_mem_free(server->mctx, server->bindkeysfile);
}
if (server->version != NULL) {
isc_mem_free(server->mctx, server->version);
}
if (server->hostname != NULL) {
isc_mem_free(server->mctx, server->hostname);
}
if (server->zonemgr != NULL) {
dns_zonemgr_detach(&server->zonemgr);
}
dst_lib_destroy();
INSIST(ISC_LIST_EMPTY(server->kasplist));
INSIST(ISC_LIST_EMPTY(server->keystorelist));
INSIST(ISC_LIST_EMPTY(server->viewlist));
INSIST(ISC_LIST_EMPTY(server->cachelist));
if (server->tlsctx_server_cache != NULL) {
isc_tlsctx_cache_detach(&server->tlsctx_server_cache);
}
if (server->tlsctx_client_cache != NULL) {
isc_tlsctx_cache_detach(&server->tlsctx_client_cache);
}
server->magic = 0;
isc_mem_put(server->mctx, server, sizeof(*server));
*serverp = NULL;
}
static void
fatal(const char *msg, isc_result_t result) {
if (named_g_loopmgr_running) {
isc_loopmgr_pause(named_g_loopmgr);
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_CRITICAL, "%s: %s", msg,
isc_result_totext(result));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_CRITICAL,
"exiting (due to fatal error)");
named_os_shutdown();
_exit(EXIT_FAILURE);
}
static isc_result_t
loadconfig(named_server_t *server) {
isc_result_t result;
result = load_configuration(named_g_conffile, server, false);
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"reloading configuration succeeded");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"reloading configuration failed: %s",
isc_result_totext(result));
atomic_store(&server->reload_status, NAMED_RELOAD_FAILED);
}
return result;
}
static isc_result_t
reload(named_server_t *server) {
isc_result_t result;
atomic_store(&server->reload_status, NAMED_RELOAD_IN_PROGRESS);
#if HAVE_LIBSYSTEMD
char buf[512];
int n = snprintf(buf, sizeof(buf),
"RELOADING=1\n"
"MONOTONIC_USEC=%" PRIu64 "\n"
"STATUS=reload command received\n",
(uint64_t)isc_time_monotonic() / NS_PER_US);
if (n > 0 && (size_t)n < sizeof(buf)) {
sd_notify(0, buf);
}
#endif /* HAVE_LIBSYSTEMD */
CHECK(loadconfig(server));
result = load_zones(server, false);
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"reloading zones succeeded");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"reloading zones failed: %s",
isc_result_totext(result));
atomic_store(&server->reload_status, NAMED_RELOAD_FAILED);
}
cleanup:
#if HAVE_LIBSYSTEMD
sd_notifyf(0,
"READY=1\n"
"STATUS=reload command finished: %s\n",
isc_result_totext(result));
#endif /* HAVE_LIBSYSTEMD */
return result;
}
/*
* Handle a reload event (from SIGHUP).
*/
static void
named_server_reload(void *arg) {
named_server_t *server = (named_server_t *)arg;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"received SIGHUP signal to reload zones");
(void)reload(server);
}
void
named_server_reloadwanted(void *arg, int signum) {
named_server_t *server = (named_server_t *)arg;
REQUIRE(signum == SIGHUP);
isc_async_run(named_g_mainloop, named_server_reload, server);
}
#ifdef JEMALLOC_API_SUPPORTED
static isc_result_t
memprof_toggle(bool active) {
if (mallctl("prof.active", NULL, NULL, &active, sizeof(active)) != 0) {
return ISC_R_FAILURE;
}
return ISC_R_SUCCESS;
}
static isc_result_t
memprof_dump(void) {
if (mallctl("prof.dump", NULL, NULL, NULL, 0) != 0) {
return ISC_R_FAILURE;
}
return ISC_R_SUCCESS;
}
#else
static isc_result_t
memprof_toggle(bool active) {
UNUSED(active);
return ISC_R_NOTIMPLEMENTED;
}
static isc_result_t
memprof_dump(void) {
return ISC_R_NOTIMPLEMENTED;
}
#endif /* JEMALLOC_API_SUPPORTED */
void
named_server_scan_interfaces(named_server_t *server) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
"automatic interface rescan");
ns_interfacemgr_scan(server->interfacemgr, true, false);
}
/*
* Get the next token from lexer 'lex'.
*
* NOTE: the token value for string tokens always uses the same pointer
* value. Multiple calls to this function on the same lexer will always
* return either that value (lex->data) or NULL. It is necessary to copy
* the token into local storage if it needs to be referenced after the next
* call to next_token().
*/
static char *
next_token(isc_lex_t *lex, isc_buffer_t **text) {
isc_result_t result;
isc_token_t token;
token.type = isc_tokentype_unknown;
result = isc_lex_gettoken(lex, ISC_LEXOPT_EOF | ISC_LEXOPT_QSTRING,
&token);
switch (result) {
case ISC_R_NOMORE:
(void)isc_lex_close(lex);
break;
case ISC_R_SUCCESS:
if (token.type == isc_tokentype_eof) {
(void)isc_lex_close(lex);
}
break;
case ISC_R_NOSPACE:
if (text != NULL) {
(void)putstr(text, "token too large");
(void)putnull(text);
}
return NULL;
default:
if (text != NULL) {
(void)putstr(text, isc_result_totext(result));
(void)putnull(text);
}
return NULL;
}
if (token.type == isc_tokentype_string ||
token.type == isc_tokentype_qstring)
{
return token.value.as_textregion.base;
}
return NULL;
}
/*
* Find the zone specified in the control channel command, if any.
* If a zone is specified, point '*zonep' at it, otherwise
* set '*zonep' to NULL, and f 'zonename' is not NULL, copy
* the zone name into it (N.B. 'zonename' must have space to hold
* a full DNS name).
*
* If 'zonetxt' is set, the caller has already pulled a token
* off the command line that is to be used as the zone name. (This
* is sometimes done when it's necessary to check for an optional
* argument before the zone name, as in "rndc sync [-clean] zone".)
*/
static isc_result_t
zone_from_args(named_server_t *server, isc_lex_t *lex, const char *zonetxt,
dns_zone_t **zonep, char *zonename, isc_buffer_t **text,
bool skip) {
char *ptr;
char *classtxt;
const char *viewtxt = NULL;
dns_fixedname_t fname;
dns_name_t *name;
isc_result_t result;
dns_view_t *view = NULL;
dns_rdataclass_t rdclass;
char problem[DNS_NAME_FORMATSIZE + 500] = "";
char zonebuf[DNS_NAME_FORMATSIZE];
bool redirect = false;
REQUIRE(zonep != NULL && *zonep == NULL);
if (skip) {
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
}
/* Look for the zone name. */
if (zonetxt == NULL) {
zonetxt = next_token(lex, text);
}
if (zonetxt == NULL) {
return ISC_R_SUCCESS;
}
/* Copy zonetxt because it'll be overwritten by next_token() */
/* To locate a zone named "-redirect" use "-redirect." */
if (strcmp(zonetxt, "-redirect") == 0) {
redirect = true;
strlcpy(zonebuf, ".", DNS_NAME_FORMATSIZE);
} else {
strlcpy(zonebuf, zonetxt, DNS_NAME_FORMATSIZE);
}
if (zonename != NULL) {
strlcpy(zonename, redirect ? "." : zonetxt,
DNS_NAME_FORMATSIZE);
}
name = dns_fixedname_initname(&fname);
CHECK(dns_name_fromstring(name, zonebuf, dns_rootname, 0, NULL));
/* Look for the optional class name. */
classtxt = next_token(lex, text);
if (classtxt != NULL) {
isc_textregion_t r;
r.base = classtxt;
r.length = strlen(classtxt);
CHECK(dns_rdataclass_fromtext(&rdclass, &r));
/* Look for the optional view name. */
viewtxt = next_token(lex, text);
} else {
rdclass = dns_rdataclass_in;
}
if (viewtxt == NULL) {
if (redirect) {
result = dns_viewlist_find(&server->viewlist,
"_default",
dns_rdataclass_in, &view);
if (result != ISC_R_SUCCESS || view->redirect == NULL) {
result = ISC_R_NOTFOUND;
snprintf(problem, sizeof(problem),
"redirect zone not found in "
"_default view");
} else {
dns_zone_attach(view->redirect, zonep);
result = ISC_R_SUCCESS;
}
} else {
result = dns_viewlist_findzone(&server->viewlist, name,
classtxt == NULL,
rdclass, zonep);
if (result == ISC_R_NOTFOUND) {
snprintf(problem, sizeof(problem),
"no matching zone '%s' in any view",
zonebuf);
} else if (result == ISC_R_MULTIPLE) {
snprintf(problem, sizeof(problem),
"zone '%s' was found in multiple "
"views",
zonebuf);
}
}
} else {
result = dns_viewlist_find(&server->viewlist, viewtxt, rdclass,
&view);
if (result != ISC_R_SUCCESS) {
snprintf(problem, sizeof(problem),
"no matching view '%s'", viewtxt);
goto report;
}
if (redirect) {
if (view->redirect != NULL) {
dns_zone_attach(view->redirect, zonep);
result = ISC_R_SUCCESS;
} else {
result = ISC_R_NOTFOUND;
}
} else {
result = dns_view_findzone(view, name, DNS_ZTFIND_EXACT,
zonep);
}
if (result != ISC_R_SUCCESS) {
snprintf(problem, sizeof(problem),
"no matching zone '%s' in view '%s'", zonebuf,
viewtxt);
}
}
/* Partial match? */
if (result != ISC_R_SUCCESS && *zonep != NULL) {
dns_zone_detach(zonep);
}
if (result == DNS_R_PARTIALMATCH) {
result = ISC_R_NOTFOUND;
}
report:
if (result != ISC_R_SUCCESS) {
isc_result_t tresult;
tresult = putstr(text, problem);
if (tresult == ISC_R_SUCCESS) {
(void)putnull(text);
}
}
cleanup:
if (view != NULL) {
dns_view_detach(&view);
}
return result;
}
/*
* Act on a "retransfer" command from the command channel.
*/
isc_result_t
named_server_retransfercommand(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
const char *arg = NULL;
dns_zone_t *zone = NULL;
dns_zone_t *raw = NULL;
dns_zonetype_t type;
bool force = false;
REQUIRE(text != NULL);
/* Skip the command name. */
(void)next_token(lex, text);
arg = next_token(lex, text);
if (arg != NULL && (strcmp(arg, "-force") == 0)) {
force = true;
arg = next_token(lex, text);
}
result = zone_from_args(server, lex, arg, &zone, NULL, text, false);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
return ISC_R_UNEXPECTEDEND;
}
dns_zone_getraw(zone, &raw);
if (raw != NULL) {
dns_zone_detach(&zone);
dns_zone_attach(raw, &zone);
dns_zone_detach(&raw);
}
type = dns_zone_gettype(zone);
if (type == dns_zone_secondary || type == dns_zone_mirror ||
type == dns_zone_stub ||
(type == dns_zone_redirect &&
dns_zone_getredirecttype(zone) == dns_zone_secondary))
{
if (force) {
dns_zone_stopxfr(zone);
}
dns_zone_forcexfr(zone);
} else {
(void)putstr(text, "retransfer: inappropriate zone type: ");
(void)putstr(text, dns_zonetype_name(type));
if (type == dns_zone_redirect) {
type = dns_zone_getredirecttype(zone);
(void)putstr(text, "(");
(void)putstr(text, dns_zonetype_name(type));
(void)putstr(text, ")");
}
(void)putnull(text);
result = ISC_R_FAILURE;
}
dns_zone_detach(&zone);
return result;
}
/*
* Act on a "reload" command from the command channel.
*/
isc_result_t
named_server_reloadcommand(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
dns_zone_t *zone = NULL;
dns_zonetype_t type;
const char *msg = NULL;
REQUIRE(text != NULL);
result = zone_from_args(server, lex, NULL, &zone, NULL, text, true);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
result = reload(server);
if (result == ISC_R_SUCCESS) {
msg = "server reload successful";
}
} else {
type = dns_zone_gettype(zone);
if (type == dns_zone_secondary || type == dns_zone_mirror ||
type == dns_zone_stub)
{
dns_zone_refresh(zone);
dns_zone_detach(&zone);
msg = "zone refresh queued";
} else {
result = dns_zone_load(zone, false);
dns_zone_detach(&zone);
switch (result) {
case ISC_R_SUCCESS:
msg = "zone reload successful";
break;
case DNS_R_CONTINUE:
msg = "zone reload queued";
result = ISC_R_SUCCESS;
break;
case DNS_R_UPTODATE:
msg = "zone reload up-to-date";
result = ISC_R_SUCCESS;
break;
default:
/* failure message will be generated by rndc */
break;
}
}
}
if (msg != NULL) {
(void)putstr(text, msg);
(void)putnull(text);
}
return result;
}
/*
* Act on a "reset-stats" command from the command channel.
*/
isc_result_t
named_server_resetstatscommand(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
const char *arg = NULL;
bool recursive_high_water = false;
bool tcp_high_water = false;
REQUIRE(text != NULL);
/* Skip the command name. */
(void)next_token(lex, text);
arg = next_token(lex, text);
if (arg == NULL) {
(void)putstr(text, "reset-stats: argument expected");
(void)putnull(text);
return ISC_R_UNEXPECTEDEND;
}
while (arg != NULL) {
if (strcmp(arg, "recursive-high-water") == 0) {
recursive_high_water = true;
} else if (strcmp(arg, "tcp-high-water") == 0) {
tcp_high_water = true;
} else {
(void)putstr(text, "reset-stats: "
"unrecognized argument: ");
(void)putstr(text, arg);
(void)putnull(text);
return ISC_R_FAILURE;
}
arg = next_token(lex, text);
}
if (recursive_high_water) {
isc_stats_set(ns_stats_get(server->sctx->nsstats), 0,
ns_statscounter_recurshighwater);
}
if (tcp_high_water) {
isc_stats_set(ns_stats_get(server->sctx->nsstats), 0,
ns_statscounter_tcphighwater);
}
return ISC_R_SUCCESS;
}
/*
* Act on a "reconfig" command from the command channel.
*/
isc_result_t
named_server_reconfigcommand(named_server_t *server) {
isc_result_t result;
atomic_store(&server->reload_status, NAMED_RELOAD_IN_PROGRESS);
#if HAVE_LIBSYSTEMD
char buf[512];
int n = snprintf(buf, sizeof(buf),
"RELOADING=1\n"
"MONOTONIC_USEC=%" PRIu64 "\n"
"STATUS=reconfig command received\n",
(uint64_t)isc_time_monotonic() / NS_PER_US);
if (n > 0 && (size_t)n < sizeof(buf)) {
sd_notify(0, buf);
}
#endif /* HAVE_LIBSYSTEMD */
CHECK(loadconfig(server));
result = load_zones(server, true);
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"scheduled loading new zones");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"loading new zones failed: %s",
isc_result_totext(result));
atomic_store(&server->reload_status, NAMED_RELOAD_FAILED);
}
cleanup:
#if HAVE_LIBSYSTEMD
sd_notifyf(0,
"READY=1\n"
"STATUS=reconfig command finished: %s\n",
isc_result_totext(result));
#endif /* HAVE_LIBSYSTEMD */
return result;
}
/*
* Act on a "notify" command from the command channel.
*/
isc_result_t
named_server_notifycommand(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
dns_zone_t *zone = NULL;
const char msg[] = "zone notify queued";
REQUIRE(text != NULL);
result = zone_from_args(server, lex, NULL, &zone, NULL, text, true);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
return ISC_R_UNEXPECTEDEND;
}
dns_zone_notify(zone);
dns_zone_detach(&zone);
(void)putstr(text, msg);
(void)putnull(text);
return ISC_R_SUCCESS;
}
/*
* Act on a "refresh" command from the command channel.
*/
isc_result_t
named_server_refreshcommand(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
dns_zone_t *zone = NULL, *raw = NULL;
const char msg1[] = "zone refresh queued";
const char msg2[] = "not a secondary, mirror, or stub zone";
dns_zonetype_t type;
REQUIRE(text != NULL);
result = zone_from_args(server, lex, NULL, &zone, NULL, text, true);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
return ISC_R_UNEXPECTEDEND;
}
dns_zone_getraw(zone, &raw);
if (raw != NULL) {
dns_zone_detach(&zone);
dns_zone_attach(raw, &zone);
dns_zone_detach(&raw);
}
type = dns_zone_gettype(zone);
if (type == dns_zone_secondary || type == dns_zone_mirror ||
type == dns_zone_stub)
{
dns_zone_refresh(zone);
dns_zone_detach(&zone);
(void)putstr(text, msg1);
(void)putnull(text);
return ISC_R_SUCCESS;
}
dns_zone_detach(&zone);
(void)putstr(text, msg2);
(void)putnull(text);
return ISC_R_FAILURE;
}
isc_result_t
named_server_setortoggle(named_server_t *server, const char *optname,
unsigned int option, isc_lex_t *lex) {
bool prev, value;
char *ptr = NULL;
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
prev = ns_server_getoption(server->sctx, option);
ptr = next_token(lex, NULL);
if (ptr == NULL) {
value = !prev;
} else if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
!strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
{
value = true;
} else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
!strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
{
value = false;
} else {
return DNS_R_SYNTAX;
}
if (value == prev) {
return ISC_R_SUCCESS;
}
ns_server_setoption(server->sctx, option, value);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, "%s is now %s",
optname, value ? "on" : "off");
return ISC_R_SUCCESS;
}
static isc_result_t
listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config,
cfg_aclconfctx_t *actx, isc_mem_t *mctx, uint16_t family,
isc_tlsctx_cache_t *tlsctx_cache,
ns_listenlist_t **target) {
isc_result_t result;
const cfg_listelt_t *element;
ns_listenlist_t *dlist = NULL;
REQUIRE(target != NULL && *target == NULL);
result = ns_listenlist_create(mctx, &dlist);
if (result != ISC_R_SUCCESS) {
return result;
}
for (element = cfg_list_first(listenlist); element != NULL;
element = cfg_list_next(element))
{
ns_listenelt_t *delt = NULL;
const cfg_obj_t *listener = cfg_listelt_value(element);
result = listenelt_fromconfig(listener, config, actx, mctx,
family, tlsctx_cache, &delt);
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
ISC_LIST_APPEND(dlist->elts, delt, link);
}
*target = dlist;
return ISC_R_SUCCESS;
cleanup:
ns_listenlist_detach(&dlist);
return result;
}
static const cfg_obj_t *
find_maplist(const cfg_obj_t *config, const char *listname, const char *name) {
isc_result_t result;
const cfg_obj_t *maplist = NULL;
const cfg_listelt_t *elt = NULL;
REQUIRE(config != NULL);
REQUIRE(name != NULL);
result = cfg_map_get(config, listname, &maplist);
if (result != ISC_R_SUCCESS) {
return NULL;
}
for (elt = cfg_list_first(maplist); elt != NULL;
elt = cfg_list_next(elt))
{
const cfg_obj_t *map = cfg_listelt_value(elt);
if (strcasecmp(cfg_obj_asstring(cfg_map_getname(map)), name) ==
0)
{
return map;
}
}
return NULL;
}
/*
* Create a listen list from the corresponding configuration
* data structure.
*/
static isc_result_t
listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config,
cfg_aclconfctx_t *actx, isc_mem_t *mctx, uint16_t family,
isc_tlsctx_cache_t *tlsctx_cache,
ns_listenelt_t **target) {
isc_result_t result;
const cfg_obj_t *ltup = NULL;
const cfg_obj_t *tlsobj = NULL, *httpobj = NULL;
const cfg_obj_t *portobj = NULL;
const cfg_obj_t *http_server = NULL;
const cfg_obj_t *proxyobj = NULL;
in_port_t port = 0;
const char *key = NULL, *cert = NULL, *ca_file = NULL,
*dhparam_file = NULL, *ciphers = NULL, *cipher_suites = NULL;
bool tls_prefer_server_ciphers = false,
tls_prefer_server_ciphers_set = false;
bool tls_session_tickets = false, tls_session_tickets_set = false;
bool do_tls = false, no_tls = false, http = false;
ns_listenelt_t *delt = NULL;
uint32_t tls_protos = 0;
ns_listen_tls_params_t tls_params = { 0 };
const char *tlsname = NULL;
isc_nm_proxy_type_t proxy = ISC_NM_PROXY_NONE;
REQUIRE(target != NULL && *target == NULL);
ltup = cfg_tuple_get(listener, "tuple");
RUNTIME_CHECK(ltup != NULL);
tlsobj = cfg_tuple_get(ltup, "tls");
if (tlsobj != NULL && cfg_obj_isstring(tlsobj)) {
tlsname = cfg_obj_asstring(tlsobj);
if (strcasecmp(tlsname, "none") == 0) {
no_tls = true;
} else if (strcasecmp(tlsname, "ephemeral") == 0) {
do_tls = true;
} else {
const cfg_obj_t *keyobj = NULL, *certobj = NULL,
*ca_obj = NULL, *dhparam_obj = NULL;
const cfg_obj_t *tlsmap = NULL;
const cfg_obj_t *tls_proto_list = NULL;
const cfg_obj_t *ciphers_obj = NULL;
const cfg_obj_t *cipher_suites_obj = NULL;
const cfg_obj_t *prefer_server_ciphers_obj = NULL;
const cfg_obj_t *session_tickets_obj = NULL;
do_tls = true;
tlsmap = find_maplist(config, "tls", tlsname);
if (tlsmap == NULL) {
cfg_obj_log(tlsobj, named_g_lctx, ISC_LOG_ERROR,
"tls '%s' is not defined",
cfg_obj_asstring(tlsobj));
return ISC_R_FAILURE;
}
CHECK(cfg_map_get(tlsmap, "key-file", &keyobj));
key = cfg_obj_asstring(keyobj);
CHECK(cfg_map_get(tlsmap, "cert-file", &certobj));
cert = cfg_obj_asstring(certobj);
if (cfg_map_get(tlsmap, "ca-file", &ca_obj) ==
ISC_R_SUCCESS)
{
ca_file = cfg_obj_asstring(ca_obj);
}
if (cfg_map_get(tlsmap, "protocols", &tls_proto_list) ==
ISC_R_SUCCESS)
{
const cfg_listelt_t *proto = NULL;
INSIST(tls_proto_list != NULL);
for (proto = cfg_list_first(tls_proto_list);
proto != 0; proto = cfg_list_next(proto))
{
const cfg_obj_t *tls_proto_obj =
cfg_listelt_value(proto);
const char *tls_sver =
cfg_obj_asstring(tls_proto_obj);
const isc_tls_protocol_version_t ver =
isc_tls_protocol_name_to_version(
tls_sver);
INSIST(ver !=
ISC_TLS_PROTO_VER_UNDEFINED);
INSIST(isc_tls_protocol_supported(ver));
tls_protos |= ver;
}
}
if (cfg_map_get(tlsmap, "dhparam-file", &dhparam_obj) ==
ISC_R_SUCCESS)
{
dhparam_file = cfg_obj_asstring(dhparam_obj);
}
if (cfg_map_get(tlsmap, "ciphers", &ciphers_obj) ==
ISC_R_SUCCESS)
{
ciphers = cfg_obj_asstring(ciphers_obj);
}
if (cfg_map_get(tlsmap, "cipher-suites",
&cipher_suites_obj) == ISC_R_SUCCESS)
{
cipher_suites =
cfg_obj_asstring(cipher_suites_obj);
}
if (cfg_map_get(tlsmap, "prefer-server-ciphers",
&prefer_server_ciphers_obj) ==
ISC_R_SUCCESS)
{
tls_prefer_server_ciphers = cfg_obj_asboolean(
prefer_server_ciphers_obj);
tls_prefer_server_ciphers_set = true;
}
if (cfg_map_get(tlsmap, "session-tickets",
&session_tickets_obj) == ISC_R_SUCCESS)
{
tls_session_tickets =
cfg_obj_asboolean(session_tickets_obj);
tls_session_tickets_set = true;
}
}
}
tls_params = (ns_listen_tls_params_t){
.name = tlsname,
.key = key,
.cert = cert,
.ca_file = ca_file,
.protocols = tls_protos,
.dhparam_file = dhparam_file,
.ciphers = ciphers,
.cipher_suites = cipher_suites,
.prefer_server_ciphers = tls_prefer_server_ciphers,
.prefer_server_ciphers_set = tls_prefer_server_ciphers_set,
.session_tickets = tls_session_tickets,
.session_tickets_set = tls_session_tickets_set
};
httpobj = cfg_tuple_get(ltup, "http");
if (httpobj != NULL && cfg_obj_isstring(httpobj)) {
const char *httpname = cfg_obj_asstring(httpobj);
if (!do_tls && !no_tls) {
return ISC_R_FAILURE;
}
http_server = find_maplist(config, "http", httpname);
if (http_server == NULL && strcasecmp(httpname, "default") != 0)
{
cfg_obj_log(httpobj, named_g_lctx, ISC_LOG_ERROR,
"http '%s' is not defined",
cfg_obj_asstring(httpobj));
return ISC_R_FAILURE;
}
http = true;
}
portobj = cfg_tuple_get(ltup, "port");
if (!cfg_obj_isuint32(portobj)) {
if (http && do_tls) {
if (named_g_httpsport != 0) {
port = named_g_httpsport;
} else {
result = named_config_getport(
config, "https-port", &port);
if (result != ISC_R_SUCCESS) {
return result;
}
}
} else if (http && !do_tls) {
if (named_g_httpport != 0) {
port = named_g_httpport;
} else {
result = named_config_getport(
config, "http-port", &port);
if (result != ISC_R_SUCCESS) {
return result;
}
}
} else if (do_tls) {
if (named_g_tlsport != 0) {
port = named_g_tlsport;
} else {
result = named_config_getport(
config, "tls-port", &port);
if (result != ISC_R_SUCCESS) {
return result;
}
}
} else {
if (named_g_port != 0) {
port = named_g_port;
} else {
result = named_config_getport(config, "port",
&port);
if (result != ISC_R_SUCCESS) {
return result;
}
}
}
} else {
if (cfg_obj_asuint32(portobj) >= UINT16_MAX) {
return ISC_R_RANGE;
}
port = (in_port_t)cfg_obj_asuint32(portobj);
}
proxyobj = cfg_tuple_get(ltup, "proxy");
if (proxyobj != NULL && cfg_obj_isstring(proxyobj)) {
const char *proxyval = cfg_obj_asstring(proxyobj);
if (strcasecmp(proxyval, "encrypted") == 0) {
INSIST(do_tls == true);
proxy = ISC_NM_PROXY_ENCRYPTED;
} else if (strcasecmp(proxyval, "plain") == 0) {
proxy = ISC_NM_PROXY_PLAIN;
} else {
UNREACHABLE();
}
}
#ifdef HAVE_LIBNGHTTP2
if (http) {
CHECK(listenelt_http(http_server, family, do_tls, &tls_params,
tlsctx_cache, port, mctx, proxy, &delt));
}
#endif /* HAVE_LIBNGHTTP2 */
if (!http) {
CHECK(ns_listenelt_create(mctx, port, NULL, family, do_tls,
&tls_params, tlsctx_cache, proxy,
&delt));
}
result = cfg_acl_fromconfig(cfg_tuple_get(listener, "acl"), config,
named_g_lctx, actx, mctx, family,
&delt->acl);
if (result != ISC_R_SUCCESS) {
ns_listenelt_destroy(delt);
return result;
}
*target = delt;
cleanup:
return result;
}
#ifdef HAVE_LIBNGHTTP2
static isc_result_t
listenelt_http(const cfg_obj_t *http, const uint16_t family, bool tls,
const ns_listen_tls_params_t *tls_params,
isc_tlsctx_cache_t *tlsctx_cache, in_port_t port,
isc_mem_t *mctx, isc_nm_proxy_type_t proxy,
ns_listenelt_t **target) {
isc_result_t result = ISC_R_SUCCESS;
ns_listenelt_t *delt = NULL;
char **endpoints = NULL;
const cfg_obj_t *eplist = NULL;
const cfg_listelt_t *elt = NULL;
size_t len = 1, i = 0;
uint32_t max_clients = named_g_http_listener_clients;
uint32_t max_streams = named_g_http_streams_per_conn;
REQUIRE(target != NULL && *target == NULL);
if (tls) {
INSIST(tls_params != NULL);
INSIST((tls_params->key == NULL) == (tls_params->cert == NULL));
}
if (port == 0) {
port = tls ? named_g_httpsport : named_g_httpport;
}
/*
* If "default" was used, we set up the default endpoint
* of "/dns-query".
*/
if (http != NULL) {
const cfg_obj_t *cfg_max_clients = NULL;
const cfg_obj_t *cfg_max_streams = NULL;
if (cfg_map_get(http, "endpoints", &eplist) == ISC_R_SUCCESS) {
INSIST(eplist != NULL);
len = cfg_list_length(eplist, false);
}
if (cfg_map_get(http, "listener-clients", &cfg_max_clients) ==
ISC_R_SUCCESS)
{
INSIST(cfg_max_clients != NULL);
max_clients = cfg_obj_asuint32(cfg_max_clients);
}
if (cfg_map_get(http, "streams-per-connection",
&cfg_max_streams) == ISC_R_SUCCESS)
{
INSIST(cfg_max_streams != NULL);
max_streams = cfg_obj_asuint32(cfg_max_streams);
}
}
endpoints = isc_mem_allocate(mctx, sizeof(endpoints[0]) * len);
if (http != NULL && eplist != NULL) {
for (elt = cfg_list_first(eplist); elt != NULL;
elt = cfg_list_next(elt))
{
const cfg_obj_t *ep = cfg_listelt_value(elt);
const char *path = cfg_obj_asstring(ep);
endpoints[i++] = isc_mem_strdup(mctx, path);
}
} else {
endpoints[i++] = isc_mem_strdup(mctx, ISC_NM_HTTP_DEFAULT_PATH);
}
INSIST(i == len);
result = ns_listenelt_create_http(
mctx, port, NULL, family, tls, tls_params, tlsctx_cache, proxy,
endpoints, len, max_clients, max_streams, &delt);
if (result != ISC_R_SUCCESS) {
goto error;
}
*target = delt;
return result;
error:
if (delt != NULL) {
ns_listenelt_destroy(delt);
}
return result;
}
#endif /* HAVE_LIBNGHTTP2 */
isc_result_t
named_server_dumpstats(named_server_t *server) {
isc_result_t result;
FILE *fp = NULL;
CHECKMF(isc_stdio_open(server->statsfile, "a", &fp),
"could not open statistics dump file", server->statsfile);
result = named_stats_dump(server, fp);
cleanup:
if (fp != NULL) {
(void)isc_stdio_close(fp);
}
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumpstats complete");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"dumpstats failed: %s",
isc_result_totext(result));
}
return result;
}
static isc_result_t
add_zone_tolist(dns_zone_t *zone, void *uap) {
struct dumpcontext *dctx = uap;
struct zonelistentry *zle;
zle = isc_mem_get(dctx->mctx, sizeof *zle);
zle->zone = NULL;
dns_zone_attach(zone, &zle->zone);
ISC_LINK_INIT(zle, link);
ISC_LIST_APPEND(ISC_LIST_TAIL(dctx->viewlist)->zonelist, zle, link);
return ISC_R_SUCCESS;
}
static isc_result_t
add_view_tolist(struct dumpcontext *dctx, dns_view_t *view) {
struct viewlistentry *vle;
isc_result_t result = ISC_R_SUCCESS;
/*
* Prevent duplicate views.
*/
for (vle = ISC_LIST_HEAD(dctx->viewlist); vle != NULL;
vle = ISC_LIST_NEXT(vle, link))
{
if (vle->view == view) {
return ISC_R_SUCCESS;
}
}
vle = isc_mem_get(dctx->mctx, sizeof *vle);
vle->view = NULL;
dns_view_attach(view, &vle->view);
ISC_LINK_INIT(vle, link);
ISC_LIST_INIT(vle->zonelist);
ISC_LIST_APPEND(dctx->viewlist, vle, link);
if (dctx->dumpzones) {
result = dns_view_apply(view, true, NULL, add_zone_tolist,
dctx);
}
return result;
}
static void
dumpcontext_destroy(struct dumpcontext *dctx) {
struct viewlistentry *vle;
struct zonelistentry *zle;
vle = ISC_LIST_HEAD(dctx->viewlist);
while (vle != NULL) {
ISC_LIST_UNLINK(dctx->viewlist, vle, link);
zle = ISC_LIST_HEAD(vle->zonelist);
while (zle != NULL) {
ISC_LIST_UNLINK(vle->zonelist, zle, link);
dns_zone_detach(&zle->zone);
isc_mem_put(dctx->mctx, zle, sizeof *zle);
zle = ISC_LIST_HEAD(vle->zonelist);
}
dns_view_detach(&vle->view);
isc_mem_put(dctx->mctx, vle, sizeof *vle);
vle = ISC_LIST_HEAD(dctx->viewlist);
}
if (dctx->version != NULL) {
dns_db_closeversion(dctx->db, &dctx->version, false);
}
if (dctx->db != NULL) {
dns_db_detach(&dctx->db);
}
if (dctx->cache != NULL) {
dns_db_detach(&dctx->cache);
}
if (dctx->fp != NULL) {
(void)isc_stdio_close(dctx->fp);
}
if (dctx->mdctx != NULL) {
dns_dumpctx_detach(&dctx->mdctx);
}
isc_mem_put(dctx->mctx, dctx, sizeof *dctx);
}
static void
dumpdone(void *arg, isc_result_t result) {
struct dumpcontext *dctx = arg;
char buf[1024 + 32];
const dns_master_style_t *style;
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
if (dctx->mdctx != NULL) {
dns_dumpctx_detach(&dctx->mdctx);
}
if (dctx->view == NULL) {
dctx->view = ISC_LIST_HEAD(dctx->viewlist);
if (dctx->view == NULL) {
goto done;
}
INSIST(dctx->zone == NULL);
} else {
goto resume;
}
nextview:
fprintf(dctx->fp, ";\n; Start view %s\n;\n", dctx->view->view->name);
resume:
if (dctx->dumpcache && dns_view_iscacheshared(dctx->view->view)) {
fprintf(dctx->fp, ";\n; Cache of view '%s' is shared as '%s'\n",
dctx->view->view->name,
dns_cache_getname(dctx->view->view->cache));
} else if (dctx->zone == NULL && dctx->cache == NULL && dctx->dumpcache)
{
if (dctx->dumpexpired) {
style = &dns_master_style_cache_with_expired;
} else {
style = &dns_master_style_cache;
}
/* start cache dump */
if (dctx->view->view->cachedb != NULL) {
dns_db_attach(dctx->view->view->cachedb, &dctx->cache);
}
if (dctx->cache != NULL) {
fprintf(dctx->fp,
";\n; Cache dump of view '%s' (cache %s)\n;\n",
dctx->view->view->name,
dns_cache_getname(dctx->view->view->cache));
result = dns_master_dumptostreamasync(
dctx->mctx, dctx->cache, NULL, style, dctx->fp,
named_g_mainloop, dumpdone, dctx, &dctx->mdctx);
if (result == ISC_R_SUCCESS) {
return;
}
if (result == ISC_R_NOTIMPLEMENTED) {
fprintf(dctx->fp, "; %s\n",
isc_result_totext(result));
} else if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
}
if ((dctx->dumpadb || dctx->dumpfail) && dctx->cache == NULL &&
dctx->view->view->cachedb != NULL)
{
dns_db_attach(dctx->view->view->cachedb, &dctx->cache);
}
if (dctx->cache != NULL) {
if (dctx->dumpadb) {
dns_adb_t *adb = NULL;
dns_view_getadb(dctx->view->view, &adb);
if (adb != NULL) {
dns_adb_dump(adb, dctx->fp);
dns_adb_detach(&adb);
}
}
if (dctx->dumpfail) {
dns_badcache_print(dctx->view->view->failcache,
"SERVFAIL cache", dctx->fp);
}
dns_db_detach(&dctx->cache);
}
if (dctx->dumpzones) {
style = &dns_master_style_full;
nextzone:
if (dctx->version != NULL) {
dns_db_closeversion(dctx->db, &dctx->version, false);
}
if (dctx->db != NULL) {
dns_db_detach(&dctx->db);
}
if (dctx->zone == NULL) {
dctx->zone = ISC_LIST_HEAD(dctx->view->zonelist);
} else {
dctx->zone = ISC_LIST_NEXT(dctx->zone, link);
}
if (dctx->zone != NULL) {
/* start zone dump */
dns_zone_name(dctx->zone->zone, buf, sizeof(buf));
fprintf(dctx->fp, ";\n; Zone dump of '%s'\n;\n", buf);
result = dns_zone_getdb(dctx->zone->zone, &dctx->db);
if (result != ISC_R_SUCCESS) {
fprintf(dctx->fp, "; %s\n",
isc_result_totext(result));
goto nextzone;
}
dns_db_currentversion(dctx->db, &dctx->version);
result = dns_master_dumptostreamasync(
dctx->mctx, dctx->db, dctx->version, style,
dctx->fp, dns_zone_getloop(dctx->zone->zone),
dumpdone, dctx, &dctx->mdctx);
if (result == ISC_R_SUCCESS) {
return;
}
if (result == ISC_R_NOTIMPLEMENTED) {
fprintf(dctx->fp, "; %s\n",
isc_result_totext(result));
result = ISC_R_SUCCESS;
POST(result);
goto nextzone;
}
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
}
}
if (dctx->view != NULL) {
dctx->view = ISC_LIST_NEXT(dctx->view, link);
if (dctx->view != NULL) {
goto nextview;
}
}
done:
fprintf(dctx->fp, "; Dump complete\n");
result = isc_stdio_flush(dctx->fp);
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumpdb complete");
}
cleanup:
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"dumpdb failed: %s", isc_result_totext(result));
}
dumpcontext_destroy(dctx);
}
isc_result_t
named_server_dumpdb(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
struct dumpcontext *dctx = NULL;
dns_view_t *view;
isc_result_t result;
char *ptr;
const char *sep;
bool found;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
dctx = isc_mem_get(server->mctx, sizeof(*dctx));
*dctx = (struct dumpcontext){
.mctx = server->mctx,
.dumpcache = true,
.dumpadb = true,
.dumpfail = true,
.viewlist = ISC_LIST_INITIALIZER,
};
CHECKMF(isc_stdio_open(server->dumpfile, "w", &dctx->fp),
"could not open dump file", server->dumpfile);
ptr = next_token(lex, NULL);
sep = (ptr == NULL) ? "" : ": ";
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumpdb started%s%s", sep, (ptr != NULL) ? ptr : "");
if (ptr != NULL && strcmp(ptr, "-all") == 0) {
/* also dump zones */
dctx->dumpzones = true;
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-cache") == 0) {
/* this is the default */
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-expired") == 0) {
/* this is the same as -cache but includes expired data */
dctx->dumpexpired = true;
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-zones") == 0) {
/* only dump zones, suppress caches */
dctx->dumpadb = false;
dctx->dumpcache = false;
dctx->dumpfail = false;
dctx->dumpzones = true;
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-adb") == 0) {
/* only dump adb, suppress other caches */
dctx->dumpcache = false;
dctx->dumpfail = false;
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-bad") == 0) {
/* only dump badcache, suppress other caches */
dctx->dumpadb = false;
dctx->dumpcache = false;
dctx->dumpfail = false;
ptr = next_token(lex, NULL);
} else if (ptr != NULL && strcmp(ptr, "-fail") == 0) {
/* only dump servfail cache, suppress other caches */
dctx->dumpadb = false;
dctx->dumpcache = false;
ptr = next_token(lex, NULL);
}
nextview:
found = false;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (ptr != NULL && strcmp(view->name, ptr) != 0) {
continue;
}
found = true;
CHECK(add_view_tolist(dctx, view));
}
if (ptr != NULL) {
if (!found) {
CHECK(putstr(text, "view '"));
CHECK(putstr(text, ptr));
CHECK(putstr(text, "' not found"));
CHECK(putnull(text));
result = ISC_R_NOTFOUND;
dumpdone(dctx, result);
return result;
}
ptr = next_token(lex, NULL);
if (ptr != NULL) {
goto nextview;
}
}
dumpdone(dctx, ISC_R_SUCCESS);
return ISC_R_SUCCESS;
cleanup:
dumpcontext_destroy(dctx);
return result;
}
isc_result_t
named_server_dumpsecroots(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
dns_view_t *view;
dns_keytable_t *secroots = NULL;
dns_ntatable_t *ntatable = NULL;
isc_result_t result;
char *ptr;
FILE *fp = NULL;
isc_time_t now;
char tbuf[64];
unsigned int used = isc_buffer_usedlength(*text);
bool first = true;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* "-" here means print the output instead of dumping to file */
ptr = next_token(lex, text);
if (ptr != NULL && strcmp(ptr, "-") == 0) {
ptr = next_token(lex, text);
} else {
result = isc_stdio_open(server->secrootsfile, "w", &fp);
if (result != ISC_R_SUCCESS) {
(void)putstr(text, "could not open ");
(void)putstr(text, server->secrootsfile);
CHECKMF(result, "could not open secroots dump file",
server->secrootsfile);
}
}
now = isc_time_now();
isc_time_formattimestamp(&now, tbuf, sizeof(tbuf));
CHECK(putstr(text, "secure roots as of "));
CHECK(putstr(text, tbuf));
CHECK(putstr(text, ":\n"));
used = isc_buffer_usedlength(*text);
do {
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (ptr != NULL && strcmp(view->name, ptr) != 0) {
continue;
}
if (secroots != NULL) {
dns_keytable_detach(&secroots);
}
result = dns_view_getsecroots(view, &secroots);
if (result == ISC_R_NOTFOUND) {
result = ISC_R_SUCCESS;
continue;
}
if (first || used != isc_buffer_usedlength(*text)) {
CHECK(putstr(text, "\n"));
first = false;
}
CHECK(putstr(text, " Start view "));
CHECK(putstr(text, view->name));
CHECK(putstr(text, "\n Secure roots:\n\n"));
used = isc_buffer_usedlength(*text);
CHECK(dns_keytable_totext(secroots, text));
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
result = dns_view_getntatable(view, &ntatable);
if (result == ISC_R_NOTFOUND) {
result = ISC_R_SUCCESS;
continue;
}
if (used != isc_buffer_usedlength(*text)) {
CHECK(putstr(text, "\n"));
}
CHECK(putstr(text, " Negative trust anchors:\n\n"));
used = isc_buffer_usedlength(*text);
CHECK(dns_ntatable_totext(ntatable, NULL, text));
}
if (ptr != NULL) {
ptr = next_token(lex, text);
}
} while (ptr != NULL);
cleanup:
if (secroots != NULL) {
dns_keytable_detach(&secroots);
}
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
if (fp != NULL) {
if (used != isc_buffer_usedlength(*text)) {
(void)putstr(text, "\n");
}
fprintf(fp, "%.*s", (int)isc_buffer_usedlength(*text),
(char *)isc_buffer_base(*text));
isc_buffer_clear(*text);
(void)isc_stdio_close(fp);
} else if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumpsecroots complete");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"dumpsecroots failed: %s",
isc_result_totext(result));
}
return result;
}
isc_result_t
named_server_dumprecursing(named_server_t *server) {
FILE *fp = NULL;
dns_view_t *view;
isc_result_t result;
CHECKMF(isc_stdio_open(server->recfile, "w", &fp),
"could not open dump file", server->recfile);
fprintf(fp, ";\n; Recursing Queries\n;\n");
ns_interfacemgr_dumprecursing(fp, server->interfacemgr);
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
fprintf(fp, ";\n; Active fetch domains [view: %s]\n;\n",
view->name);
dns_resolver_dumpfetches(view->resolver, isc_statsformat_file,
fp);
}
fprintf(fp, "; Dump complete\n");
cleanup:
if (fp != NULL) {
result = isc_stdio_close(fp);
}
if (result == ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumprecursing complete");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"dumprecursing failed: %s",
isc_result_totext(result));
}
return result;
}
isc_result_t
named_server_setdebuglevel(named_server_t *server, isc_lex_t *lex) {
char *ptr;
char *endp;
long newlevel;
UNUSED(server);
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Look for the new level name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
if (named_g_debuglevel < 99) {
named_g_debuglevel++;
}
} else {
newlevel = strtol(ptr, &endp, 10);
if (*endp != '\0' || newlevel < 0 || newlevel > 99) {
return ISC_R_RANGE;
}
named_g_debuglevel = (unsigned int)newlevel;
}
isc_log_setdebuglevel(named_g_lctx, named_g_debuglevel);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"debug level is now %u", named_g_debuglevel);
return ISC_R_SUCCESS;
}
isc_result_t
named_server_validation(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
char *ptr;
dns_view_t *view;
bool changed = false;
isc_result_t result;
bool enable = true, set = true, first = true;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find out what we are to do. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
!strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
{
enable = true;
} else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
!strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
{
enable = false;
} else if (!strcasecmp(ptr, "check") || !strcasecmp(ptr, "status")) {
set = false;
} else {
return DNS_R_SYNTAX;
}
/* Look for the view name. */
ptr = next_token(lex, text);
isc_loopmgr_pause(named_g_loopmgr);
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if ((ptr != NULL && strcasecmp(ptr, view->name) != 0) ||
strcasecmp("_bind", view->name) == 0)
{
continue;
}
if (set) {
CHECK(dns_view_flushcache(view, false));
view->enablevalidation = enable;
changed = true;
} else {
if (!first) {
CHECK(putstr(text, "\n"));
}
CHECK(putstr(text, "DNSSEC validation is "));
CHECK(putstr(text, view->enablevalidation
? "enabled"
: "disabled"));
CHECK(putstr(text, " (view "));
CHECK(putstr(text, view->name));
CHECK(putstr(text, ")"));
first = false;
}
}
CHECK(putnull(text));
if (!set) {
result = ISC_R_SUCCESS;
} else if (changed) {
result = ISC_R_SUCCESS;
} else {
result = ISC_R_FAILURE;
}
cleanup:
isc_loopmgr_resume(named_g_loopmgr);
return result;
}
isc_result_t
named_server_flushcache(named_server_t *server, isc_lex_t *lex) {
char *ptr;
dns_view_t *view;
bool flushed;
bool found;
isc_result_t result;
named_cache_t *nsc;
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Look for the view name. */
ptr = next_token(lex, NULL);
isc_loopmgr_pause(named_g_loopmgr);
flushed = true;
found = false;
/*
* Flushing a cache is tricky when caches are shared by multiple views.
* We first identify which caches should be flushed in the local cache
* list, flush these caches, and then update other views that refer to
* the flushed cache DB.
*/
if (ptr != NULL) {
/*
* Mark caches that need to be flushed. This is an O(#view^2)
* operation in the very worst case, but should be normally
* much more lightweight because only a few (most typically just
* one) views will match.
*/
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (strcasecmp(ptr, view->name) != 0) {
continue;
}
found = true;
for (nsc = ISC_LIST_HEAD(server->cachelist);
nsc != NULL; nsc = ISC_LIST_NEXT(nsc, link))
{
if (nsc->cache == view->cache) {
break;
}
}
INSIST(nsc != NULL);
nsc->needflush = true;
}
} else {
found = true;
}
/* Perform flush */
for (nsc = ISC_LIST_HEAD(server->cachelist); nsc != NULL;
nsc = ISC_LIST_NEXT(nsc, link))
{
if (ptr != NULL && !nsc->needflush) {
continue;
}
nsc->needflush = true;
result = dns_view_flushcache(nsc->primaryview, false);
if (result != ISC_R_SUCCESS) {
flushed = false;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"flushing cache in view '%s' failed: %s",
nsc->primaryview->name,
isc_result_totext(result));
}
}
/*
* Fix up views that share a flushed cache: let the views update the
* cache DB they're referring to. This could also be an expensive
* operation, but should typically be marginal: the inner loop is only
* necessary for views that share a cache, and if there are many such
* views the number of shared cache should normally be small.
* A worst case is that we have n views and n/2 caches, each shared by
* two views. Then this will be a O(n^2/4) operation.
*/
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (!dns_view_iscacheshared(view)) {
continue;
}
for (nsc = ISC_LIST_HEAD(server->cachelist); nsc != NULL;
nsc = ISC_LIST_NEXT(nsc, link))
{
if (!nsc->needflush || nsc->cache != view->cache) {
continue;
}
result = dns_view_flushcache(view, true);
if (result != ISC_R_SUCCESS) {
flushed = false;
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"fixing cache in view '%s' "
"failed: %s",
view->name, isc_result_totext(result));
}
}
}
/* Cleanup the cache list. */
for (nsc = ISC_LIST_HEAD(server->cachelist); nsc != NULL;
nsc = ISC_LIST_NEXT(nsc, link))
{
nsc->needflush = false;
}
if (flushed && found) {
if (ptr != NULL) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"flushing cache in view '%s' succeeded",
ptr);
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"flushing caches in all views succeeded");
}
result = ISC_R_SUCCESS;
} else {
if (!found) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"flushing cache in view '%s' failed: "
"view not found",
ptr);
result = ISC_R_NOTFOUND;
} else {
result = ISC_R_FAILURE;
}
}
isc_loopmgr_resume(named_g_loopmgr);
return result;
}
isc_result_t
named_server_flushnode(named_server_t *server, isc_lex_t *lex, bool tree) {
char *ptr, *viewname;
char target[DNS_NAME_FORMATSIZE];
dns_view_t *view;
bool flushed;
bool found;
isc_result_t result;
isc_buffer_t b;
dns_fixedname_t fixed;
dns_name_t *name;
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find the domain name to flush. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
strlcpy(target, ptr, DNS_NAME_FORMATSIZE);
isc_buffer_constinit(&b, target, strlen(target));
isc_buffer_add(&b, strlen(target));
name = dns_fixedname_initname(&fixed);
result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS) {
return result;
}
/* Look for the view name. */
viewname = next_token(lex, NULL);
isc_loopmgr_pause(named_g_loopmgr);
flushed = true;
found = false;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (viewname != NULL && strcasecmp(viewname, view->name) != 0) {
continue;
}
found = true;
/*
* It's a little inefficient to try flushing name for all views
* if some of the views share a single cache. But since the
* operation is lightweight we prefer simplicity here.
*/
result = dns_view_flushnode(view, name, tree);
if (result != ISC_R_SUCCESS) {
flushed = false;
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"flushing %s '%s' in cache view '%s' "
"failed: %s",
tree ? "tree" : "name", target,
view->name, isc_result_totext(result));
}
}
if (flushed && found) {
if (viewname != NULL) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"flushing %s '%s' in cache view '%s' "
"succeeded",
tree ? "tree" : "name", target, viewname);
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"flushing %s '%s' in all cache views "
"succeeded",
tree ? "tree" : "name", target);
}
result = ISC_R_SUCCESS;
} else {
if (!found) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"flushing %s '%s' in cache view '%s' "
"failed: view not found",
tree ? "tree" : "name", target, viewname);
}
result = ISC_R_FAILURE;
}
isc_loopmgr_resume(named_g_loopmgr);
return result;
}
isc_result_t
named_server_status(named_server_t *server, isc_buffer_t **text) {
isc_result_t result;
unsigned int zonecount, xferrunning, xferdeferred, xferfirstrefresh;
unsigned int soaqueries, automatic;
const char *ob = "", *cb = "", *alt = "";
char boottime[ISC_FORMATHTTPTIMESTAMP_SIZE];
char configtime[ISC_FORMATHTTPTIMESTAMP_SIZE];
char line[1024], hostname[256];
named_reload_t reload_status;
REQUIRE(text != NULL);
if (named_g_server->version_set) {
ob = " (";
cb = ")";
if (named_g_server->version == NULL) {
alt = "version.bind/txt/ch disabled";
} else {
alt = named_g_server->version;
}
}
zonecount = dns_zonemgr_getcount(server->zonemgr, DNS_ZONESTATE_ANY);
xferrunning = dns_zonemgr_getcount(server->zonemgr,
DNS_ZONESTATE_XFERRUNNING);
xferdeferred = dns_zonemgr_getcount(server->zonemgr,
DNS_ZONESTATE_XFERDEFERRED);
xferfirstrefresh = dns_zonemgr_getcount(server->zonemgr,
DNS_ZONESTATE_XFERFIRSTREFRESH);
soaqueries = dns_zonemgr_getcount(server->zonemgr,
DNS_ZONESTATE_SOAQUERY);
automatic = dns_zonemgr_getcount(server->zonemgr,
DNS_ZONESTATE_AUTOMATIC);
isc_time_formathttptimestamp(&named_g_boottime, boottime,
sizeof(boottime));
isc_time_formathttptimestamp(&named_g_configtime, configtime,
sizeof(configtime));
snprintf(line, sizeof(line), "version: %s%s <id:%s>%s%s%s\n",
PACKAGE_STRING, PACKAGE_DESCRIPTION, PACKAGE_SRCID, ob, alt,
cb);
CHECK(putstr(text, line));
if (gethostname(hostname, sizeof(hostname)) == 0) {
strlcpy(hostname, "localhost", sizeof(hostname));
}
snprintf(line, sizeof(line), "running on %s: %s\n", hostname,
named_os_uname());
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "boot time: %s\n", boottime);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "last configured: %s\n", configtime);
CHECK(putstr(text, line));
if (named_g_chrootdir != NULL) {
snprintf(line, sizeof(line), "configuration file: %s (%s%s)\n",
named_g_conffile, named_g_chrootdir, named_g_conffile);
} else {
snprintf(line, sizeof(line), "configuration file: %s\n",
named_g_conffile);
}
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "CPUs found: %u\n", named_g_cpus_detected);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "worker threads: %u\n", named_g_cpus);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "number of zones: %u (%u automatic)\n",
zonecount, automatic);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "debug level: %u\n", named_g_debuglevel);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "xfers running: %u\n", xferrunning);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "xfers deferred: %u\n", xferdeferred);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "xfers first refresh: %u\n",
xferfirstrefresh);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "soa queries in progress: %u\n",
soaqueries);
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "query logging is %s\n",
ns_server_getoption(server->sctx, NS_SERVER_LOGQUERIES)
? "ON"
: "OFF");
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "response logging is %s\n",
ns_server_getoption(server->sctx, NS_SERVER_LOGRESPONSES)
? "ON"
: "OFF");
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "memory profiling is %s\n",
named_server_getmemprof());
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "recursive clients: %u/%u/%u\n",
isc_quota_getused(&server->sctx->recursionquota),
isc_quota_getsoft(&server->sctx->recursionquota),
isc_quota_getmax(&server->sctx->recursionquota));
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "recursive high-water: %u\n",
(unsigned int)ns_stats_get_counter(
server->sctx->nsstats,
ns_statscounter_recurshighwater));
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "tcp clients: %u/%u\n",
isc_quota_getused(&server->sctx->tcpquota),
isc_quota_getmax(&server->sctx->tcpquota));
CHECK(putstr(text, line));
snprintf(line, sizeof(line), "TCP high-water: %u\n",
(unsigned int)ns_stats_get_counter(
server->sctx->nsstats, ns_statscounter_tcphighwater));
CHECK(putstr(text, line));
reload_status = atomic_load(&server->reload_status);
if (reload_status != NAMED_RELOAD_DONE) {
snprintf(line, sizeof(line), "reload/reconfig %s\n",
reload_status == NAMED_RELOAD_FAILED ? "failed"
: "in progress");
CHECK(putstr(text, line));
}
CHECK(putstr(text, "server is up and running"));
CHECK(putnull(text));
return ISC_R_SUCCESS;
cleanup:
return result;
}
isc_result_t
named_server_testgen(isc_lex_t *lex, isc_buffer_t **text) {
isc_result_t result;
char *ptr;
unsigned long count;
unsigned long i;
const unsigned char chars[] = "abcdefghijklmnopqrstuvwxyz0123456789";
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
ptr = next_token(lex, text);
if (ptr == NULL) {
count = 26;
} else {
count = strtoul(ptr, NULL, 10);
}
CHECK(isc_buffer_reserve(*text, count));
for (i = 0; i < count; i++) {
CHECK(putuint8(text, chars[i % (sizeof(chars) - 1)]));
}
CHECK(putnull(text));
cleanup:
return result;
}
/*
* Act on a "sign" or "loadkeys" command from the command channel.
*/
isc_result_t
named_server_rekey(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
dns_zone_t *zone = NULL;
dns_zonetype_t type;
uint16_t keyopts;
bool fullsign = false;
char *ptr;
REQUIRE(text != NULL);
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcasecmp(ptr, NAMED_COMMAND_SIGN) == 0) {
fullsign = true;
}
REQUIRE(text != NULL);
result = zone_from_args(server, lex, NULL, &zone, NULL, text, false);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
return ISC_R_UNEXPECTEDEND; /* XXX: or do all zones? */
}
type = dns_zone_gettype(zone);
if (type != dns_zone_primary) {
dns_zone_detach(&zone);
return DNS_R_NOTPRIMARY;
}
keyopts = dns_zone_getkeyopts(zone);
/*
* "rndc loadkeys" requires a "dnssec-policy".
*/
if ((keyopts & DNS_ZONEKEY_ALLOW) == 0) {
result = ISC_R_NOPERM;
} else if ((keyopts & DNS_ZONEKEY_MAINTAIN) == 0 && !fullsign) {
result = ISC_R_NOPERM;
} else {
dns_zone_rekey(zone, fullsign);
}
dns_zone_detach(&zone);
return result;
}
/*
* Act on a "sync" command from the command channel.
*/
static isc_result_t
synczone(dns_zone_t *zone, void *uap) {
bool cleanup = *(bool *)uap;
isc_result_t result;
dns_zone_t *raw = NULL;
char *journal;
dns_zone_getraw(zone, &raw);
if (raw != NULL) {
synczone(raw, uap);
dns_zone_detach(&raw);
}
result = dns_zone_flush(zone);
if (result != ISC_R_SUCCESS) {
cleanup = false;
}
if (cleanup) {
journal = dns_zone_getjournal(zone);
if (journal != NULL) {
(void)isc_file_remove(journal);
}
}
return result;
}
isc_result_t
named_server_sync(named_server_t *server, isc_lex_t *lex, isc_buffer_t **text) {
isc_result_t result, tresult;
dns_view_t *view = NULL;
dns_zone_t *zone = NULL;
char classstr[DNS_RDATACLASS_FORMATSIZE];
char zonename[DNS_NAME_FORMATSIZE];
const char *vname = NULL, *sep = NULL, *arg = NULL;
bool cleanup = false;
REQUIRE(text != NULL);
(void)next_token(lex, text);
arg = next_token(lex, text);
if (arg != NULL &&
(strcmp(arg, "-clean") == 0 || strcmp(arg, "-clear") == 0))
{
cleanup = true;
arg = next_token(lex, text);
}
REQUIRE(text != NULL);
result = zone_from_args(server, lex, arg, &zone, NULL, text, false);
if (result != ISC_R_SUCCESS) {
return result;
}
if (zone == NULL) {
isc_loopmgr_pause(named_g_loopmgr);
tresult = ISC_R_SUCCESS;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
result = dns_view_apply(view, false, NULL, synczone,
&cleanup);
if (result != ISC_R_SUCCESS && tresult == ISC_R_SUCCESS)
{
tresult = result;
}
}
isc_loopmgr_resume(named_g_loopmgr);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"dumping all zones%s: %s",
cleanup ? ", removing journal files" : "",
isc_result_totext(result));
return tresult;
}
isc_loopmgr_pause(named_g_loopmgr);
result = synczone(zone, &cleanup);
isc_loopmgr_resume(named_g_loopmgr);
view = dns_zone_getview(zone);
if (strcmp(view->name, "_default") == 0 ||
strcmp(view->name, "_bind") == 0)
{
vname = "";
sep = "";
} else {
vname = view->name;
sep = " ";
}
dns_rdataclass_format(dns_zone_getclass(zone), classstr,
sizeof(classstr));
dns_name_format(dns_zone_getorigin(zone), zonename, sizeof(zonename));
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER,
ISC_LOG_INFO, "sync: dumping zone '%s/%s'%s%s%s: %s", zonename,
classstr, sep, vname, cleanup ? ", removing journal file" : "",
isc_result_totext(result));
dns_zone_detach(&zone);
return result;
}
/*
* Act on a "freeze" or "thaw" command from the command channel.
*/
isc_result_t
named_server_freeze(named_server_t *server, bool freeze, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result, tresult;
dns_zone_t *mayberaw = NULL, *raw = NULL;
dns_zonetype_t type;
char classstr[DNS_RDATACLASS_FORMATSIZE];
char zonename[DNS_NAME_FORMATSIZE];
dns_view_t *view;
const char *vname, *sep;
bool frozen;
const char *msg = NULL;
REQUIRE(text != NULL);
result = zone_from_args(server, lex, NULL, &mayberaw, NULL, text, true);
if (result != ISC_R_SUCCESS) {
return result;
}
if (mayberaw == NULL) {
isc_loopmgr_pause(named_g_loopmgr);
tresult = ISC_R_SUCCESS;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
result = dns_view_freezezones(view, freeze);
if (result != ISC_R_SUCCESS && tresult == ISC_R_SUCCESS)
{
tresult = result;
}
}
isc_loopmgr_resume(named_g_loopmgr);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"%s all zones: %s",
freeze ? "freezing" : "thawing",
isc_result_totext(tresult));
return tresult;
}
dns_zone_getraw(mayberaw, &raw);
if (raw != NULL) {
dns_zone_detach(&mayberaw);
dns_zone_attach(raw, &mayberaw);
dns_zone_detach(&raw);
}
type = dns_zone_gettype(mayberaw);
if (type != dns_zone_primary) {
dns_zone_detach(&mayberaw);
return DNS_R_NOTPRIMARY;
}
if (freeze && !dns_zone_isdynamic(mayberaw, true)) {
dns_zone_detach(&mayberaw);
return DNS_R_NOTDYNAMIC;
}
isc_loopmgr_pause(named_g_loopmgr);
frozen = dns_zone_getupdatedisabled(mayberaw);
if (freeze) {
if (frozen) {
msg = "WARNING: The zone was already frozen.\n"
"Someone else may be editing it or "
"it may still be re-loading.";
result = DNS_R_FROZEN;
}
if (result == ISC_R_SUCCESS) {
result = dns_zone_flush(mayberaw);
if (result != ISC_R_SUCCESS) {
msg = "Flushing the zone updates to "
"disk failed.";
}
}
if (result == ISC_R_SUCCESS) {
dns_zone_setupdatedisabled(mayberaw, freeze);
}
} else {
if (frozen) {
result = dns_zone_loadandthaw(mayberaw);
switch (result) {
case ISC_R_SUCCESS:
case DNS_R_UPTODATE:
msg = "The zone reload and thaw was "
"successful.";
result = ISC_R_SUCCESS;
break;
case DNS_R_CONTINUE:
msg = "A zone reload and thaw was started.\n"
"Check the logs to see the result.";
result = ISC_R_SUCCESS;
break;
default:
break;
}
}
}
isc_loopmgr_resume(named_g_loopmgr);
if (msg != NULL) {
(void)putstr(text, msg);
(void)putnull(text);
}
view = dns_zone_getview(mayberaw);
if (strcmp(view->name, "_default") == 0 ||
strcmp(view->name, "_bind") == 0)
{
vname = "";
sep = "";
} else {
vname = view->name;
sep = " ";
}
dns_rdataclass_format(dns_zone_getclass(mayberaw), classstr,
sizeof(classstr));
dns_name_format(dns_zone_getorigin(mayberaw), zonename,
sizeof(zonename));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"%s zone '%s/%s'%s%s: %s",
freeze ? "freezing" : "thawing", zonename, classstr, sep,
vname, isc_result_totext(result));
dns_zone_detach(&mayberaw);
return result;
}
#ifdef HAVE_LIBSCF
/*
* This function adds a message for rndc to echo if named
* is managed by smf and is also running chroot.
*/
isc_result_t
named_smf_add_message(isc_buffer_t **text) {
REQUIRE(text != NULL);
return putstr(text, "use svcadm(1M) to manage named");
}
#endif /* HAVE_LIBSCF */
#ifndef HAVE_LMDB
/*
* Emit a comment at the top of the nzf file containing the viewname
* Expects the fp to already be open for writing
*/
#define HEADER1 "# New zone file for view: "
#define HEADER2 \
"\n# This file contains configuration for zones added by\n" \
"# the 'rndc addzone' command. DO NOT EDIT BY HAND.\n"
static isc_result_t
add_comment(FILE *fp, const char *viewname) {
isc_result_t result;
CHECK(isc_stdio_write(HEADER1, sizeof(HEADER1) - 1, 1, fp, NULL));
CHECK(isc_stdio_write(viewname, strlen(viewname), 1, fp, NULL));
CHECK(isc_stdio_write(HEADER2, sizeof(HEADER2) - 1, 1, fp, NULL));
cleanup:
return result;
}
static void
dumpzone(void *arg, const char *buf, int len) {
FILE *fp = arg;
(void)isc_stdio_write(buf, len, 1, fp, NULL);
}
static isc_result_t
nzf_append(dns_view_t *view, const cfg_obj_t *zconfig) {
isc_result_t result;
off_t offset;
FILE *fp = NULL;
bool offsetok = false;
LOCK(&view->new_zone_lock);
CHECK(isc_stdio_open(view->new_zone_file, "a", &fp));
CHECK(isc_stdio_seek(fp, 0, SEEK_END));
CHECK(isc_stdio_tell(fp, &offset));
offsetok = true;
if (offset == 0) {
CHECK(add_comment(fp, view->name));
}
CHECK(isc_stdio_write("zone ", 5, 1, fp, NULL));
cfg_printx(zconfig, CFG_PRINTER_ONELINE, dumpzone, fp);
CHECK(isc_stdio_write(";\n", 2, 1, fp, NULL));
CHECK(isc_stdio_flush(fp));
result = isc_stdio_close(fp);
fp = NULL;
cleanup:
if (fp != NULL) {
(void)isc_stdio_close(fp);
if (offsetok) {
isc_result_t result2;
result2 = isc_file_truncate(view->new_zone_file,
offset);
if (result2 != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error truncating NZF file '%s' "
"during rollback from append: "
"%s",
view->new_zone_file,
isc_result_totext(result2));
}
}
}
UNLOCK(&view->new_zone_lock);
return result;
}
static isc_result_t
nzf_writeconf(const cfg_obj_t *config, dns_view_t *view) {
const cfg_obj_t *zl = NULL;
cfg_list_t *list;
const cfg_listelt_t *elt;
FILE *fp = NULL;
char tmp[1024];
isc_result_t result;
result = isc_file_template(view->new_zone_file, "nzf-XXXXXXXX", tmp,
sizeof(tmp));
if (result == ISC_R_SUCCESS) {
result = isc_file_openunique(tmp, &fp);
}
if (result != ISC_R_SUCCESS) {
return result;
}
cfg_map_get(config, "zone", &zl);
if (!cfg_obj_islist(zl)) {
CHECK(ISC_R_FAILURE);
}
list = UNCONST(&zl->value.list);
CHECK(add_comment(fp, view->name)); /* force a comment */
for (elt = ISC_LIST_HEAD(*list); elt != NULL;
elt = ISC_LIST_NEXT(elt, link))
{
const cfg_obj_t *zconfig = cfg_listelt_value(elt);
CHECK(isc_stdio_write("zone ", 5, 1, fp, NULL));
cfg_printx(zconfig, CFG_PRINTER_ONELINE, dumpzone, fp);
CHECK(isc_stdio_write(";\n", 2, 1, fp, NULL));
}
CHECK(isc_stdio_flush(fp));
result = isc_stdio_close(fp);
fp = NULL;
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
CHECK(isc_file_rename(tmp, view->new_zone_file));
return result;
cleanup:
if (fp != NULL) {
(void)isc_stdio_close(fp);
}
(void)isc_file_remove(tmp);
return result;
}
static isc_result_t
load_nzf(dns_view_t *view, ns_cfgctx_t *nzcfg) {
isc_result_t result;
/* The new zone file may not exist. That is OK. */
if (!isc_file_exists(view->new_zone_file)) {
return ISC_R_SUCCESS;
}
/*
* Parse the configuration in the NZF file. This may be called in
* multiple views, so we reset the parser each time.
*/
cfg_parser_reset(named_g_addparser);
result = cfg_parse_file(named_g_addparser, view->new_zone_file,
&cfg_type_addzoneconf, &nzcfg->nzf_config);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error parsing NZF file '%s': %s",
view->new_zone_file, isc_result_totext(result));
}
return result;
}
#else /* HAVE_LMDB */
static void
nzd_setkey(MDB_val *key, dns_name_t *name, char *namebuf, size_t buflen) {
dns_fixedname_t fixed;
dns_fixedname_init(&fixed);
dns_name_downcase(name, dns_fixedname_name(&fixed), NULL);
dns_name_format(dns_fixedname_name(&fixed), namebuf, buflen);
key->mv_data = namebuf;
key->mv_size = strlen(namebuf);
}
static void
dumpzone(void *arg, const char *buf, int len) {
ns_dzarg_t *dzarg = arg;
isc_result_t result;
REQUIRE(dzarg != NULL && ISC_MAGIC_VALID(dzarg, DZARG_MAGIC));
result = putmem(dzarg->text, buf, len);
if (result != ISC_R_SUCCESS && dzarg->result == ISC_R_SUCCESS) {
dzarg->result = result;
}
}
static isc_result_t
nzd_save(MDB_txn **txnp, MDB_dbi dbi, dns_zone_t *zone,
const cfg_obj_t *zconfig) {
isc_result_t result;
int status;
dns_view_t *view;
bool commit = false;
isc_buffer_t *text = NULL;
char namebuf[1024];
MDB_val key, data;
ns_dzarg_t dzarg;
view = dns_zone_getview(zone);
nzd_setkey(&key, dns_zone_getorigin(zone), namebuf, sizeof(namebuf));
if (zconfig == NULL) {
/* We're deleting the zone from the database */
status = mdb_del(*txnp, dbi, &key, NULL);
if (status != MDB_SUCCESS && status != MDB_NOTFOUND) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error deleting zone %s "
"from NZD database: %s",
namebuf, mdb_strerror(status));
result = ISC_R_FAILURE;
goto cleanup;
} else if (status != MDB_NOTFOUND) {
commit = true;
}
} else {
/* We're creating or overwriting the zone */
const cfg_obj_t *zoptions;
isc_buffer_allocate(view->mctx, &text, 256);
zoptions = cfg_tuple_get(zconfig, "options");
if (zoptions == NULL) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Unable to get options from config in "
"nzd_save()");
result = ISC_R_FAILURE;
goto cleanup;
}
dzarg.magic = DZARG_MAGIC;
dzarg.text = &text;
dzarg.result = ISC_R_SUCCESS;
cfg_printx(zoptions, CFG_PRINTER_ONELINE, dumpzone, &dzarg);
if (dzarg.result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error writing zone config to "
"buffer in nzd_save(): %s",
isc_result_totext(dzarg.result));
result = dzarg.result;
goto cleanup;
}
data.mv_data = isc_buffer_base(text);
data.mv_size = isc_buffer_usedlength(text);
status = mdb_put(*txnp, dbi, &key, &data, 0);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error inserting zone in "
"NZD database: %s",
mdb_strerror(status));
result = ISC_R_FAILURE;
goto cleanup;
}
commit = true;
}
result = ISC_R_SUCCESS;
cleanup:
if (!commit || result != ISC_R_SUCCESS) {
(void)mdb_txn_abort(*txnp);
} else {
status = mdb_txn_commit(*txnp);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error committing "
"NZD database: %s",
mdb_strerror(status));
result = ISC_R_FAILURE;
}
}
*txnp = NULL;
if (text != NULL) {
isc_buffer_free(&text);
}
return result;
}
/*
* Check whether the new zone database for 'view' can be opened for writing.
*
* Caller must hold 'view->new_zone_lock'.
*/
static isc_result_t
nzd_writable(dns_view_t *view) {
isc_result_t result = ISC_R_SUCCESS;
int status;
MDB_dbi dbi;
MDB_txn *txn = NULL;
REQUIRE(view != NULL);
status = mdb_txn_begin((MDB_env *)view->new_zone_dbenv, 0, 0, &txn);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"mdb_txn_begin: %s", mdb_strerror(status));
return ISC_R_FAILURE;
}
status = mdb_dbi_open(txn, NULL, 0, &dbi);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"mdb_dbi_open: %s", mdb_strerror(status));
result = ISC_R_FAILURE;
}
mdb_txn_abort(txn);
return result;
}
/*
* Open the new zone database for 'view' and start a transaction for it.
*
* Caller must hold 'view->new_zone_lock'.
*/
static isc_result_t
nzd_open(dns_view_t *view, unsigned int flags, MDB_txn **txnp, MDB_dbi *dbi) {
int status;
MDB_txn *txn = NULL;
REQUIRE(view != NULL);
REQUIRE(txnp != NULL && *txnp == NULL);
REQUIRE(dbi != NULL);
status = mdb_txn_begin((MDB_env *)view->new_zone_dbenv, 0, flags, &txn);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"mdb_txn_begin: %s", mdb_strerror(status));
goto cleanup;
}
status = mdb_dbi_open(txn, NULL, 0, dbi);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"mdb_dbi_open: %s", mdb_strerror(status));
goto cleanup;
}
*txnp = txn;
cleanup:
if (status != MDB_SUCCESS) {
if (txn != NULL) {
mdb_txn_abort(txn);
}
return ISC_R_FAILURE;
}
return ISC_R_SUCCESS;
}
/*
* nzd_env_close() and nzd_env_reopen are a kluge to address the
* problem of an NZD file possibly being created before we drop
* root privileges.
*/
static void
nzd_env_close(dns_view_t *view) {
const char *dbpath = NULL;
char dbpath_copy[PATH_MAX];
char lockpath[PATH_MAX];
int status, ret;
if (view->new_zone_dbenv == NULL) {
return;
}
status = mdb_env_get_path(view->new_zone_dbenv, &dbpath);
INSIST(status == MDB_SUCCESS);
snprintf(lockpath, sizeof(lockpath), "%s-lock", dbpath);
strlcpy(dbpath_copy, dbpath, sizeof(dbpath_copy));
mdb_env_close((MDB_env *)view->new_zone_dbenv);
/*
* Database files must be owned by the eventual user, not by root.
*/
ret = chown(dbpath_copy, named_os_uid(), -1);
UNUSED(ret);
/*
* Some platforms need the lockfile not to exist when we reopen the
* environment.
*/
(void)isc_file_remove(lockpath);
view->new_zone_dbenv = NULL;
}
static isc_result_t
nzd_env_reopen(dns_view_t *view) {
isc_result_t result;
MDB_env *env = NULL;
int status;
if (view->new_zone_db == NULL) {
return ISC_R_SUCCESS;
}
nzd_env_close(view);
status = mdb_env_create(&env);
if (status != MDB_SUCCESS) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_OTHER, ISC_LOG_ERROR,
"mdb_env_create failed: %s",
mdb_strerror(status));
CHECK(ISC_R_FAILURE);
}
if (view->new_zone_mapsize != 0ULL) {
status = mdb_env_set_mapsize(env, view->new_zone_mapsize);
if (status != MDB_SUCCESS) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_OTHER, ISC_LOG_ERROR,
"mdb_env_set_mapsize failed: %s",
mdb_strerror(status));
CHECK(ISC_R_FAILURE);
}
}
status = mdb_env_open(env, view->new_zone_db, DNS_LMDB_FLAGS, 0600);
if (status != MDB_SUCCESS) {
isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
ISC_LOGMODULE_OTHER, ISC_LOG_ERROR,
"mdb_env_open of '%s' failed: %s",
view->new_zone_db, mdb_strerror(status));
CHECK(ISC_R_FAILURE);
}
view->new_zone_dbenv = env;
env = NULL;
result = ISC_R_SUCCESS;
cleanup:
if (env != NULL) {
mdb_env_close(env);
}
return result;
}
/*
* If 'commit' is true, commit the new zone database transaction pointed to by
* 'txnp'; otherwise, abort that transaction.
*
* Caller must hold 'view->new_zone_lock' for the view that the transaction
* pointed to by 'txnp' was started for.
*/
static isc_result_t
nzd_close(MDB_txn **txnp, bool commit) {
isc_result_t result = ISC_R_SUCCESS;
int status;
REQUIRE(txnp != NULL);
if (*txnp != NULL) {
if (commit) {
status = mdb_txn_commit(*txnp);
if (status != MDB_SUCCESS) {
result = ISC_R_FAILURE;
}
} else {
mdb_txn_abort(*txnp);
}
*txnp = NULL;
}
return result;
}
/*
* If there's an existing NZF file, load it and migrate its data
* to the NZD.
*
* Caller must hold view->new_zone_lock.
*/
static isc_result_t
load_nzf(dns_view_t *view, ns_cfgctx_t *nzcfg) {
isc_result_t result;
cfg_obj_t *nzf_config = NULL;
int status;
isc_buffer_t *text = NULL;
bool commit = false;
const cfg_obj_t *zonelist;
const cfg_listelt_t *element;
char tempname[PATH_MAX];
MDB_txn *txn = NULL;
MDB_dbi dbi;
MDB_val key, data;
ns_dzarg_t dzarg;
UNUSED(nzcfg);
/*
* If NZF file doesn't exist, or NZD DB exists and already
* has data, return without attempting migration.
*/
if (!isc_file_exists(view->new_zone_file)) {
result = ISC_R_SUCCESS;
goto cleanup;
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"Migrating zones from NZF file '%s' to "
"NZD database '%s'",
view->new_zone_file, view->new_zone_db);
/*
* Instead of blindly copying lines, we parse the NZF file using
* the configuration parser, because it validates it against the
* config type, giving us a guarantee that valid configuration
* will be written to DB.
*/
cfg_parser_reset(named_g_addparser);
result = cfg_parse_file(named_g_addparser, view->new_zone_file,
&cfg_type_addzoneconf, &nzf_config);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error parsing NZF file '%s': %s",
view->new_zone_file, isc_result_totext(result));
goto cleanup;
}
zonelist = NULL;
CHECK(cfg_map_get(nzf_config, "zone", &zonelist));
if (!cfg_obj_islist(zonelist)) {
CHECK(ISC_R_FAILURE);
}
CHECK(nzd_open(view, 0, &txn, &dbi));
isc_buffer_allocate(view->mctx, &text, 256);
for (element = cfg_list_first(zonelist); element != NULL;
element = cfg_list_next(element))
{
const cfg_obj_t *zconfig;
const cfg_obj_t *zoptions;
char zname[DNS_NAME_FORMATSIZE];
dns_fixedname_t fname;
dns_name_t *name;
const char *origin;
isc_buffer_t b;
zconfig = cfg_listelt_value(element);
origin = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));
if (origin == NULL) {
result = ISC_R_FAILURE;
goto cleanup;
}
/* Normalize zone name */
isc_buffer_constinit(&b, origin, strlen(origin));
isc_buffer_add(&b, strlen(origin));
name = dns_fixedname_initname(&fname);
CHECK(dns_name_fromtext(name, &b, dns_rootname,
DNS_NAME_DOWNCASE, NULL));
dns_name_format(name, zname, sizeof(zname));
key.mv_data = zname;
key.mv_size = strlen(zname);
zoptions = cfg_tuple_get(zconfig, "options");
if (zoptions == NULL) {
result = ISC_R_FAILURE;
goto cleanup;
}
isc_buffer_clear(text);
dzarg.magic = DZARG_MAGIC;
dzarg.text = &text;
dzarg.result = ISC_R_SUCCESS;
cfg_printx(zoptions, CFG_PRINTER_ONELINE, dumpzone, &dzarg);
if (dzarg.result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error writing zone config to "
"buffer in load_nzf(): %s",
isc_result_totext(result));
result = dzarg.result;
goto cleanup;
}
data.mv_data = isc_buffer_base(text);
data.mv_size = isc_buffer_usedlength(text);
status = mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE);
if (status != MDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"Error inserting zone in "
"NZD database: %s",
mdb_strerror(status));
result = ISC_R_FAILURE;
goto cleanup;
}
commit = true;
}
result = ISC_R_SUCCESS;
/*
* Leaving the NZF file in place is harmless as we won't use it
* if an NZD database is found for the view. But we rename NZF file
* to a backup name here.
*/
strlcpy(tempname, view->new_zone_file, sizeof(tempname));
if (strlen(tempname) < sizeof(tempname) - 1) {
strlcat(tempname, "~", sizeof(tempname));
isc_file_rename(view->new_zone_file, tempname);
}
cleanup:
if (result != ISC_R_SUCCESS) {
(void)nzd_close(&txn, false);
} else {
result = nzd_close(&txn, commit);
}
if (text != NULL) {
isc_buffer_free(&text);
}
if (nzf_config != NULL) {
cfg_obj_destroy(named_g_addparser, &nzf_config);
}
return result;
}
#endif /* HAVE_LMDB */
static isc_result_t
newzone_parse(named_server_t *server, char *command, dns_view_t **viewp,
cfg_obj_t **zoneconfp, const cfg_obj_t **zoneobjp,
bool *redirectp, isc_buffer_t **text) {
isc_result_t result;
isc_buffer_t argbuf;
bool redirect = false;
cfg_obj_t *zoneconf = NULL;
const cfg_obj_t *zlist = NULL;
const cfg_obj_t *zoneobj = NULL;
const cfg_obj_t *zoptions = NULL;
const cfg_obj_t *obj = NULL;
const char *viewname = NULL;
dns_rdataclass_t rdclass;
dns_view_t *view = NULL;
const char *bn = NULL;
REQUIRE(viewp != NULL && *viewp == NULL);
REQUIRE(zoneobjp != NULL && *zoneobjp == NULL);
REQUIRE(zoneconfp != NULL && *zoneconfp == NULL);
REQUIRE(redirectp != NULL);
/* Try to parse the argument string */
isc_buffer_init(&argbuf, command, (unsigned int)strlen(command));
isc_buffer_add(&argbuf, strlen(command));
if (strncasecmp(command, "add", 3) == 0) {
bn = "addzone";
} else if (strncasecmp(command, "mod", 3) == 0) {
bn = "modzone";
} else {
UNREACHABLE();
}
/*
* Convert the "addzone" or "modzone" to just "zone", for
* the benefit of the parser
*/
isc_buffer_forward(&argbuf, 3);
cfg_parser_reset(named_g_addparser);
CHECK(cfg_parse_buffer(named_g_addparser, &argbuf, bn, 0,
&cfg_type_addzoneconf, 0, &zoneconf));
CHECK(cfg_map_get(zoneconf, "zone", &zlist));
if (!cfg_obj_islist(zlist)) {
CHECK(ISC_R_FAILURE);
}
/* For now we only support adding one zone at a time */
zoneobj = cfg_listelt_value(cfg_list_first(zlist));
/* Check the zone type for ones that are not supported by addzone. */
zoptions = cfg_tuple_get(zoneobj, "options");
obj = NULL;
(void)cfg_map_get(zoptions, "type", &obj);
if (obj == NULL) {
(void)cfg_map_get(zoptions, "in-view", &obj);
if (obj != NULL) {
(void)putstr(text, "'in-view' zones not supported by ");
(void)putstr(text, bn);
} else {
(void)putstr(text, "zone type not specified");
}
CHECK(ISC_R_FAILURE);
}
if (strcasecmp(cfg_obj_asstring(obj), "hint") == 0 ||
strcasecmp(cfg_obj_asstring(obj), "forward") == 0)
{
(void)putstr(text, "'");
(void)putstr(text, cfg_obj_asstring(obj));
(void)putstr(text, "' zones not supported by ");
(void)putstr(text, bn);
CHECK(ISC_R_FAILURE);
}
if (strcasecmp(cfg_obj_asstring(obj), "redirect") == 0) {
redirect = true;
}
/* Make sense of optional class argument */
obj = cfg_tuple_get(zoneobj, "class");
CHECK(named_config_getclass(obj, dns_rdataclass_in, &rdclass));
/* Make sense of optional view argument */
obj = cfg_tuple_get(zoneobj, "view");
if (obj && cfg_obj_isstring(obj)) {
viewname = cfg_obj_asstring(obj);
}
if (viewname == NULL || *viewname == '\0') {
viewname = "_default";
}
result = dns_viewlist_find(&server->viewlist, viewname, rdclass, &view);
if (result == ISC_R_NOTFOUND) {
(void)putstr(text, "no matching view found for '");
(void)putstr(text, viewname);
(void)putstr(text, "'");
goto cleanup;
} else if (result != ISC_R_SUCCESS) {
goto cleanup;
}
*viewp = view;
*zoneobjp = zoneobj;
*zoneconfp = zoneconf;
*redirectp = redirect;
return ISC_R_SUCCESS;
cleanup:
if (zoneconf != NULL) {
cfg_obj_destroy(named_g_addparser, &zoneconf);
}
if (view != NULL) {
dns_view_detach(&view);
}
return result;
}
static isc_result_t
delete_zoneconf(dns_view_t *view, cfg_parser_t *pctx, const cfg_obj_t *config,
const dns_name_t *zname, nzfwriter_t nzfwriter) {
isc_result_t result = ISC_R_NOTFOUND;
const cfg_listelt_t *elt = NULL;
const cfg_obj_t *zl = NULL;
cfg_list_t *list;
dns_fixedname_t myfixed;
dns_name_t *myname;
REQUIRE(view != NULL);
REQUIRE(pctx != NULL);
REQUIRE(config != NULL);
REQUIRE(zname != NULL);
LOCK(&view->new_zone_lock);
cfg_map_get(config, "zone", &zl);
if (!cfg_obj_islist(zl)) {
CHECK(ISC_R_FAILURE);
}
list = UNCONST(&zl->value.list);
myname = dns_fixedname_initname(&myfixed);
for (elt = ISC_LIST_HEAD(*list); elt != NULL;
elt = ISC_LIST_NEXT(elt, link))
{
const cfg_obj_t *zconf = cfg_listelt_value(elt);
const char *zn;
cfg_listelt_t *e;
zn = cfg_obj_asstring(cfg_tuple_get(zconf, "name"));
result = dns_name_fromstring(myname, zn, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS || !dns_name_equal(zname, myname)) {
continue;
}
e = UNCONST(elt);
ISC_LIST_UNLINK(*list, e, link);
cfg_obj_destroy(pctx, &e->obj);
isc_mem_put(pctx->mctx, e, sizeof(*e));
result = ISC_R_SUCCESS;
break;
}
/*
* Write config to NZF file if appropriate
*/
if (nzfwriter != NULL && view->new_zone_file != NULL) {
result = nzfwriter(config, view);
}
cleanup:
UNLOCK(&view->new_zone_lock);
return result;
}
static isc_result_t
do_addzone(named_server_t *server, ns_cfgctx_t *cfg, dns_view_t *view,
dns_name_t *name, cfg_obj_t *zoneconf, const cfg_obj_t *zoneobj,
bool redirect, isc_buffer_t **text) {
isc_result_t result, tresult;
dns_zone_t *zone = NULL;
#ifndef HAVE_LMDB
FILE *fp = NULL;
bool cleanup_config = false;
#else /* HAVE_LMDB */
MDB_txn *txn = NULL;
MDB_dbi dbi;
bool locked = false;
UNUSED(zoneconf);
#endif
/* Zone shouldn't already exist */
if (redirect) {
result = (view->redirect == NULL) ? ISC_R_NOTFOUND
: ISC_R_EXISTS;
} else {
result = dns_view_findzone(view, name, DNS_ZTFIND_EXACT, &zone);
if (result == ISC_R_SUCCESS) {
result = ISC_R_EXISTS;
}
}
if (result != ISC_R_NOTFOUND) {
goto cleanup;
}
isc_loopmgr_pause(named_g_loopmgr);
#ifndef HAVE_LMDB
/*
* Make sure we can open the configuration save file
*/
result = isc_stdio_open(view->new_zone_file, "a", &fp);
if (result != ISC_R_SUCCESS) {
isc_loopmgr_resume(named_g_loopmgr);
TCHECK(putstr(text, "unable to create '"));
TCHECK(putstr(text, view->new_zone_file));
TCHECK(putstr(text, "': "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
(void)isc_stdio_close(fp);
fp = NULL;
#else /* HAVE_LMDB */
LOCK(&view->new_zone_lock);
locked = true;
/* Make sure we can open the NZD database */
result = nzd_writable(view);
if (result != ISC_R_SUCCESS) {
isc_loopmgr_resume(named_g_loopmgr);
TCHECK(putstr(text, "unable to open NZD database for '"));
TCHECK(putstr(text, view->new_zone_db));
TCHECK(putstr(text, "'"));
result = ISC_R_FAILURE;
goto cleanup;
}
#endif /* HAVE_LMDB */
/* Mark view unfrozen and configure zone */
dns_view_thaw(view);
result = configure_zone(cfg->config, zoneobj, cfg->vconfig, view,
&server->viewlist, &server->kasplist,
&server->keystorelist, cfg->actx, true, false,
false, false);
dns_view_freeze(view);
isc_loopmgr_resume(named_g_loopmgr);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "configure_zone failed: "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
/* Is it there yet? */
if (redirect) {
if (view->redirect == NULL) {
CHECK(ISC_R_NOTFOUND);
}
dns_zone_attach(view->redirect, &zone);
} else {
result = dns_view_findzone(view, name, DNS_ZTFIND_EXACT, &zone);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"added new zone was not found: %s",
isc_result_totext(result));
goto cleanup;
}
}
#ifndef HAVE_LMDB
/*
* If there wasn't a previous newzone config, just save the one
* we've created. If there was a previous one, merge the new
* zone into it.
*/
if (cfg->nzf_config == NULL) {
cfg_obj_attach(zoneconf, &cfg->nzf_config);
} else {
cfg_obj_t *z = UNCONST(zoneobj);
CHECK(cfg_parser_mapadd(cfg->add_parser, cfg->nzf_config, z,
"zone"));
}
cleanup_config = true;
#endif /* HAVE_LMDB */
/*
* Load the zone from the master file. If this fails, we'll
* need to undo the configuration we've done already.
*/
result = dns_zone_load(zone, true);
if (result != ISC_R_SUCCESS) {
dns_db_t *dbp = NULL;
TCHECK(putstr(text, "dns_zone_loadnew failed: "));
TCHECK(putstr(text, isc_result_totext(result)));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"addzone failed; reverting.");
/* If the zone loaded partially, unload it */
if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(zone);
}
/* Remove the zone from the zone table */
dns_view_delzone(view, zone);
goto cleanup;
}
/* Flag the zone as having been added at runtime */
dns_zone_setadded(zone, true);
#ifdef HAVE_LMDB
/* Save the new zone configuration into the NZD */
CHECK(nzd_open(view, 0, &txn, &dbi));
CHECK(nzd_save(&txn, dbi, zone, zoneobj));
#else /* ifdef HAVE_LMDB */
/* Append the zone configuration to the NZF */
result = nzf_append(view, zoneobj);
#endif /* HAVE_LMDB */
cleanup:
#ifndef HAVE_LMDB
if (fp != NULL) {
(void)isc_stdio_close(fp);
}
if (result != ISC_R_SUCCESS && cleanup_config) {
tresult = delete_zoneconf(view, cfg->add_parser,
cfg->nzf_config, name, NULL);
RUNTIME_CHECK(tresult == ISC_R_SUCCESS);
}
#else /* HAVE_LMDB */
if (txn != NULL) {
(void)nzd_close(&txn, false);
}
if (locked) {
UNLOCK(&view->new_zone_lock);
}
#endif /* HAVE_LMDB */
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
static isc_result_t
do_modzone(named_server_t *server, ns_cfgctx_t *cfg, dns_view_t *view,
dns_name_t *name, const char *zname, const cfg_obj_t *zoneobj,
bool redirect, isc_buffer_t **text) {
isc_result_t result, tresult;
dns_zone_t *zone = NULL;
bool added;
#ifndef HAVE_LMDB
FILE *fp = NULL;
cfg_obj_t *z;
#else /* HAVE_LMDB */
MDB_txn *txn = NULL;
MDB_dbi dbi;
bool locked = false;
#endif /* HAVE_LMDB */
/* Zone must already exist */
if (redirect) {
if (view->redirect != NULL) {
dns_zone_attach(view->redirect, &zone);
result = ISC_R_SUCCESS;
} else {
result = ISC_R_NOTFOUND;
}
} else {
result = dns_view_findzone(view, name, DNS_ZTFIND_EXACT, &zone);
}
if (result != ISC_R_SUCCESS) {
goto cleanup;
}
added = dns_zone_getadded(zone);
dns_zone_detach(&zone);
#ifndef HAVE_LMDB
cfg = (ns_cfgctx_t *)view->new_zone_config;
if (cfg == NULL) {
TCHECK(putstr(text, "new zone config is not set"));
CHECK(ISC_R_FAILURE);
}
#endif /* ifndef HAVE_LMDB */
isc_loopmgr_pause(named_g_loopmgr);
#ifndef HAVE_LMDB
/* Make sure we can open the configuration save file */
result = isc_stdio_open(view->new_zone_file, "a", &fp);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "unable to open '"));
TCHECK(putstr(text, view->new_zone_file));
TCHECK(putstr(text, "': "));
TCHECK(putstr(text, isc_result_totext(result)));
isc_loopmgr_resume(named_g_loopmgr);
goto cleanup;
}
(void)isc_stdio_close(fp);
fp = NULL;
#else /* HAVE_LMDB */
LOCK(&view->new_zone_lock);
locked = true;
/* Make sure we can open the NZD database */
result = nzd_writable(view);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "unable to open NZD database for '"));
TCHECK(putstr(text, view->new_zone_db));
TCHECK(putstr(text, "'"));
result = ISC_R_FAILURE;
isc_loopmgr_resume(named_g_loopmgr);
goto cleanup;
}
#endif /* HAVE_LMDB */
/* Reconfigure the zone */
dns_view_thaw(view);
result = configure_zone(cfg->config, zoneobj, cfg->vconfig, view,
&server->viewlist, &server->kasplist,
&server->keystorelist, cfg->actx, true, false,
false, true);
dns_view_freeze(view);
isc_loopmgr_resume(named_g_loopmgr);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "configure_zone failed: "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
/* Is it there yet? */
if (redirect) {
if (view->redirect == NULL) {
CHECK(ISC_R_NOTFOUND);
}
dns_zone_attach(view->redirect, &zone);
} else {
CHECK(dns_view_findzone(view, name, DNS_ZTFIND_EXACT, &zone));
}
#ifndef HAVE_LMDB
/* Remove old zone from configuration (and NZF file if applicable) */
if (added) {
result = delete_zoneconf(view, cfg->add_parser, cfg->nzf_config,
dns_zone_getorigin(zone),
nzf_writeconf);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "former zone configuration "
"not deleted: "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
}
#endif /* HAVE_LMDB */
if (!added) {
if (cfg->vconfig == NULL) {
result = delete_zoneconf(
view, cfg->conf_parser, cfg->config,
dns_zone_getorigin(zone), NULL);
} else {
const cfg_obj_t *voptions = cfg_tuple_get(cfg->vconfig,
"options");
result = delete_zoneconf(
view, cfg->conf_parser, voptions,
dns_zone_getorigin(zone), NULL);
}
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "former zone configuration "
"not deleted: "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
}
/* Load the zone from the master file if it needs reloading. */
result = dns_zone_load(zone, true);
/*
* Dynamic zones need no reloading, so we can pass this result.
*/
if (result == DNS_R_DYNAMIC) {
result = ISC_R_SUCCESS;
}
if (result != ISC_R_SUCCESS) {
dns_db_t *dbp = NULL;
TCHECK(putstr(text, "failed to load zone '"));
TCHECK(putstr(text, zname));
TCHECK(putstr(text, "': "));
TCHECK(putstr(text, isc_result_totext(result)));
TCHECK(putstr(text, "\nThe zone is no longer being served. "));
TCHECK(putstr(text, "Use 'rndc addzone' to correct\n"));
TCHECK(putstr(text, "the problem and restore service."));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"modzone failed; removing zone.");
/* If the zone loaded partially, unload it */
if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(zone);
}
/* Remove the zone from the zone table */
dns_view_delzone(view, zone);
goto cleanup;
}
#ifndef HAVE_LMDB
/* Store the new zone configuration; also in NZF if applicable */
z = UNCONST(zoneobj);
CHECK(cfg_parser_mapadd(cfg->add_parser, cfg->nzf_config, z, "zone"));
#endif /* HAVE_LMDB */
if (added) {
#ifdef HAVE_LMDB
CHECK(nzd_open(view, 0, &txn, &dbi));
CHECK(nzd_save(&txn, dbi, zone, zoneobj));
#else /* ifdef HAVE_LMDB */
result = nzf_append(view, zoneobj);
if (result != ISC_R_SUCCESS) {
TCHECK(putstr(text, "\nNew zone config not saved: "));
TCHECK(putstr(text, isc_result_totext(result)));
goto cleanup;
}
#endif /* HAVE_LMDB */
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zname));
TCHECK(putstr(text, "' reconfigured."));
} else {
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zname));
TCHECK(putstr(text, "' must also be reconfigured in\n"));
TCHECK(putstr(text, "named.conf to make changes permanent."));
}
cleanup:
#ifndef HAVE_LMDB
if (fp != NULL) {
(void)isc_stdio_close(fp);
}
#else /* HAVE_LMDB */
if (txn != NULL) {
(void)nzd_close(&txn, false);
}
if (locked) {
UNLOCK(&view->new_zone_lock);
}
#endif /* HAVE_LMDB */
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
/*
* Act on an "addzone" or "modzone" command from the command channel.
*/
isc_result_t
named_server_changezone(named_server_t *server, char *command,
isc_buffer_t **text) {
isc_result_t result;
bool addzone;
bool redirect = false;
ns_cfgctx_t *cfg = NULL;
cfg_obj_t *zoneconf = NULL;
const cfg_obj_t *zoneobj = NULL;
const char *zonename;
dns_view_t *view = NULL;
isc_buffer_t buf;
dns_fixedname_t fname;
dns_name_t *dnsname;
REQUIRE(text != NULL);
if (strncasecmp(command, "add", 3) == 0) {
addzone = true;
} else {
INSIST(strncasecmp(command, "mod", 3) == 0);
addzone = false;
}
CHECK(newzone_parse(server, command, &view, &zoneconf, &zoneobj,
&redirect, text));
/* Are we accepting new zones in this view? */
#ifdef HAVE_LMDB
if (view->new_zone_db == NULL)
#else /* ifdef HAVE_LMDB */
if (view->new_zone_file == NULL)
#endif /* HAVE_LMDB */
{
(void)putstr(text, "Not allowing new zones in view '");
(void)putstr(text, view->name);
(void)putstr(text, "'");
result = ISC_R_NOPERM;
goto cleanup;
}
cfg = (ns_cfgctx_t *)view->new_zone_config;
if (cfg == NULL) {
result = ISC_R_FAILURE;
goto cleanup;
}
zonename = cfg_obj_asstring(cfg_tuple_get(zoneobj, "name"));
isc_buffer_constinit(&buf, zonename, strlen(zonename));
isc_buffer_add(&buf, strlen(zonename));
dnsname = dns_fixedname_initname(&fname);
CHECK(dns_name_fromtext(dnsname, &buf, dns_rootname, 0, NULL));
if (redirect) {
if (!dns_name_equal(dnsname, dns_rootname)) {
(void)putstr(text, "redirect zones must be called "
"\".\"");
CHECK(ISC_R_FAILURE);
}
}
if (addzone) {
CHECK(do_addzone(server, cfg, view, dnsname, zoneconf, zoneobj,
redirect, text));
} else {
CHECK(do_modzone(server, cfg, view, dnsname, zonename, zoneobj,
redirect, text));
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"%s zone %s in view %s via %s",
addzone ? "added" : "updated", zonename, view->name,
addzone ? NAMED_COMMAND_ADDZONE : NAMED_COMMAND_MODZONE);
/* Changing a zone counts as reconfiguration */
named_g_configtime = isc_time_now();
cleanup:
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
if (zoneconf != NULL) {
cfg_obj_destroy(named_g_addparser, &zoneconf);
}
if (view != NULL) {
dns_view_detach(&view);
}
return result;
}
static bool
inuse(const char *file, bool first, isc_buffer_t **text) {
if (file != NULL && isc_file_exists(file)) {
if (first) {
(void)putstr(text, "The following files were in use "
"and may now be removed:\n");
} else {
(void)putstr(text, "\n");
}
(void)putstr(text, file);
(void)putnull(text);
return false;
}
return first;
}
typedef struct {
dns_zone_t *zone;
bool cleanup;
} ns_dzctx_t;
/*
* Carry out a zone deletion scheduled by named_server_delzone().
*/
static void
rmzone(void *arg) {
ns_dzctx_t *dz = (ns_dzctx_t *)arg;
dns_zone_t *zone = NULL, *raw = NULL, *mayberaw = NULL;
dns_catz_zone_t *catz = NULL;
char zonename[DNS_NAME_FORMATSIZE];
dns_view_t *view = NULL;
ns_cfgctx_t *cfg = NULL;
dns_db_t *dbp = NULL;
bool added;
isc_result_t result;
#ifdef HAVE_LMDB
MDB_txn *txn = NULL;
MDB_dbi dbi;
#endif /* ifdef HAVE_LMDB */
REQUIRE(dz != NULL);
/* Dig out configuration for this zone */
zone = dz->zone;
view = dns_zone_getview(zone);
cfg = (ns_cfgctx_t *)view->new_zone_config;
dns_name_format(dns_zone_getorigin(zone), zonename, sizeof(zonename));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"deleting zone %s in view %s via delzone", zonename,
view->name);
/*
* Remove the zone from configuration (and NZF file if applicable)
* (If this is a catalog zone member then nzf_config can be NULL)
*/
added = dns_zone_getadded(zone);
catz = dns_zone_get_parentcatz(zone);
if (added && catz == NULL && cfg != NULL) {
#ifdef HAVE_LMDB
/* Make sure we can open the NZD database */
LOCK(&view->new_zone_lock);
result = nzd_open(view, 0, &txn, &dbi);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"unable to open NZD database for '%s'",
view->new_zone_db);
} else {
result = nzd_save(&txn, dbi, zone, NULL);
}
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"unable to delete zone configuration: %s",
isc_result_totext(result));
}
if (txn != NULL) {
(void)nzd_close(&txn, false);
}
UNLOCK(&view->new_zone_lock);
#else /* ifdef HAVE_LMDB */
result = delete_zoneconf(view, cfg->add_parser, cfg->nzf_config,
dns_zone_getorigin(zone),
nzf_writeconf);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"unable to delete zone configuration: %s",
isc_result_totext(result));
}
#endif /* HAVE_LMDB */
}
if (!added && cfg != NULL) {
if (cfg->vconfig != NULL) {
const cfg_obj_t *voptions = cfg_tuple_get(cfg->vconfig,
"options");
result = delete_zoneconf(
view, cfg->conf_parser, voptions,
dns_zone_getorigin(zone), NULL);
} else {
result = delete_zoneconf(
view, cfg->conf_parser, cfg->config,
dns_zone_getorigin(zone), NULL);
}
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"unable to delete zone configuration: %s",
isc_result_totext(result));
}
}
/* Unload zone database */
if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(zone);
}
/* Clean up stub/secondary zone files if requested to do so */
dns_zone_getraw(zone, &raw);
mayberaw = (raw != NULL) ? raw : zone;
if (added && dz->cleanup) {
const char *file;
file = dns_zone_getfile(mayberaw);
result = isc_file_remove(file);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
file = dns_zone_getjournal(mayberaw);
result = isc_file_remove(file);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
if (zone != mayberaw) {
file = dns_zone_getfile(zone);
result = isc_file_remove(file);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
file = dns_zone_getjournal(zone);
result = isc_file_remove(file);
if (result != ISC_R_SUCCESS) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
}
}
if (raw != NULL) {
dns_zone_detach(&raw);
}
dns_zone_detach(&zone);
isc_mem_put(named_g_mctx, dz, sizeof(*dz));
}
/*
* Act on a "delzone" command from the command channel.
*/
isc_result_t
named_server_delzone(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result, tresult;
dns_zone_t *zone = NULL;
dns_zone_t *raw = NULL;
dns_zone_t *mayberaw;
dns_view_t *view = NULL;
char zonename[DNS_NAME_FORMATSIZE];
bool cleanup = false;
const char *ptr;
bool added;
ns_dzctx_t *dz = NULL;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find out what we are to do. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcmp(ptr, "-clean") == 0 || strcmp(ptr, "-clear") == 0) {
cleanup = true;
ptr = next_token(lex, text);
}
CHECK(zone_from_args(server, lex, ptr, &zone, zonename, text, false));
if (zone == NULL) {
result = ISC_R_UNEXPECTEDEND;
goto cleanup;
}
INSIST(zonename != NULL);
/* Is this a policy zone? */
if (dns_zone_get_rpz_num(zone) != DNS_RPZ_INVALID_NUM) {
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zonename));
TCHECK(putstr(text,
"' cannot be deleted: response-policy zone."));
result = ISC_R_FAILURE;
goto cleanup;
}
view = dns_zone_getview(zone);
if (dns_zone_gettype(zone) == dns_zone_redirect) {
dns_zone_detach(&view->redirect);
} else {
CHECK(dns_view_delzone(view, zone));
}
/* Send cleanup event */
dz = isc_mem_get(named_g_mctx, sizeof(*dz));
*dz = (ns_dzctx_t){
.cleanup = cleanup,
};
dns_zone_attach(zone, &dz->zone);
isc_async_run(dns_zone_getloop(zone), rmzone, dz);
/* Inform user about cleaning up stub/secondary zone files */
dns_zone_getraw(zone, &raw);
mayberaw = (raw != NULL) ? raw : zone;
added = dns_zone_getadded(zone);
if (!added) {
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zonename));
TCHECK(putstr(text, "' is no longer active and will be "
"deleted.\n"));
TCHECK(putstr(text, "To keep it from returning "));
TCHECK(putstr(text, "when the server is restarted, it\n"));
TCHECK(putstr(text, "must also be removed from named.conf."));
} else if (cleanup) {
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zonename));
TCHECK(putstr(text, "' and associated files will be deleted."));
} else if (dns_zone_gettype(mayberaw) == dns_zone_secondary ||
dns_zone_gettype(mayberaw) == dns_zone_mirror ||
dns_zone_gettype(mayberaw) == dns_zone_stub)
{
bool first;
const char *file;
TCHECK(putstr(text, "zone '"));
TCHECK(putstr(text, zonename));
TCHECK(putstr(text, "' will be deleted."));
file = dns_zone_getfile(mayberaw);
first = inuse(file, true, text);
file = dns_zone_getjournal(mayberaw);
first = inuse(file, first, text);
if (zone != mayberaw) {
file = dns_zone_getfile(zone);
first = inuse(file, first, text);
file = dns_zone_getjournal(zone);
(void)inuse(file, first, text);
}
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"zone %s scheduled for removal via delzone", zonename);
/* Removing a zone counts as reconfiguration */
named_g_configtime = isc_time_now();
result = ISC_R_SUCCESS;
cleanup:
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
if (raw != NULL) {
dns_zone_detach(&raw);
}
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
static const cfg_obj_t *
find_name_in_list_from_map(const cfg_obj_t *config,
const char *map_key_for_list, const char *name,
bool redirect) {
const cfg_obj_t *list = NULL;
const cfg_listelt_t *element;
const cfg_obj_t *obj = NULL;
dns_fixedname_t fixed1, fixed2;
dns_name_t *name1 = NULL, *name2 = NULL;
isc_result_t result;
if (strcmp(map_key_for_list, "zone") == 0) {
name1 = dns_fixedname_initname(&fixed1);
name2 = dns_fixedname_initname(&fixed2);
result = dns_name_fromstring(name1, name, dns_rootname, 0,
NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
}
cfg_map_get(config, map_key_for_list, &list);
for (element = cfg_list_first(list); element != NULL;
element = cfg_list_next(element))
{
const char *vname;
obj = cfg_listelt_value(element);
INSIST(obj != NULL);
vname = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
if (vname == NULL) {
obj = NULL;
continue;
}
if (name1 != NULL) {
result = dns_name_fromstring(name2, vname, dns_rootname,
0, NULL);
if (result == ISC_R_SUCCESS &&
dns_name_equal(name1, name2))
{
const cfg_obj_t *zoptions;
const cfg_obj_t *typeobj = NULL;
zoptions = cfg_tuple_get(obj, "options");
if (zoptions != NULL) {
cfg_map_get(zoptions, "type", &typeobj);
}
if (redirect && typeobj != NULL &&
strcasecmp(cfg_obj_asstring(typeobj),
"redirect") == 0)
{
break;
} else if (!redirect) {
break;
}
}
} else if (strcasecmp(vname, name) == 0) {
break;
}
obj = NULL;
}
return obj;
}
static void
emitzone(void *arg, const char *buf, int len) {
ns_dzarg_t *dzarg = arg;
isc_result_t result;
REQUIRE(dzarg != NULL && ISC_MAGIC_VALID(dzarg, DZARG_MAGIC));
result = putmem(dzarg->text, buf, len);
if (result != ISC_R_SUCCESS && dzarg->result == ISC_R_SUCCESS) {
dzarg->result = result;
}
}
/*
* Act on a "showzone" command from the command channel.
*/
isc_result_t
named_server_showzone(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result;
const cfg_obj_t *vconfig = NULL, *zconfig = NULL;
char zonename[DNS_NAME_FORMATSIZE];
const cfg_obj_t *map;
dns_view_t *view = NULL;
dns_zone_t *zone = NULL;
ns_cfgctx_t *cfg = NULL;
#ifdef HAVE_LMDB
cfg_obj_t *nzconfig = NULL;
#endif /* HAVE_LMDB */
bool added, redirect;
ns_dzarg_t dzarg;
REQUIRE(text != NULL);
/* Parse parameters */
CHECK(zone_from_args(server, lex, NULL, &zone, zonename, text, true));
if (zone == NULL) {
result = ISC_R_UNEXPECTEDEND;
goto cleanup;
}
redirect = dns_zone_gettype(zone) == dns_zone_redirect;
added = dns_zone_getadded(zone);
view = dns_zone_getview(zone);
dns_zone_detach(&zone);
cfg = (ns_cfgctx_t *)view->new_zone_config;
if (cfg == NULL) {
result = ISC_R_FAILURE;
goto cleanup;
}
if (!added) {
/* Find the view statement */
vconfig = find_name_in_list_from_map(cfg->config, "view",
view->name, false);
/* Find the zone statement */
if (vconfig != NULL) {
map = cfg_tuple_get(vconfig, "options");
} else {
map = cfg->config;
}
zconfig = find_name_in_list_from_map(map, "zone", zonename,
redirect);
}
#ifndef HAVE_LMDB
if (zconfig == NULL && cfg->nzf_config != NULL) {
zconfig = find_name_in_list_from_map(cfg->nzf_config, "zone",
zonename, redirect);
}
#else /* HAVE_LMDB */
if (zconfig == NULL) {
const cfg_obj_t *zlist = NULL;
CHECK(get_newzone_config(view, zonename, &nzconfig));
CHECK(cfg_map_get(nzconfig, "zone", &zlist));
if (!cfg_obj_islist(zlist)) {
CHECK(ISC_R_FAILURE);
}
zconfig = cfg_listelt_value(cfg_list_first(zlist));
}
#endif /* HAVE_LMDB */
if (zconfig == NULL) {
CHECK(ISC_R_NOTFOUND);
}
CHECK(putstr(text, "zone "));
dzarg.magic = DZARG_MAGIC;
dzarg.text = text;
dzarg.result = ISC_R_SUCCESS;
cfg_printx(zconfig, CFG_PRINTER_ONELINE, emitzone, &dzarg);
CHECK(dzarg.result);
CHECK(putstr(text, ";"));
result = ISC_R_SUCCESS;
cleanup:
#ifdef HAVE_LMDB
if (nzconfig != NULL) {
cfg_obj_destroy(named_g_addparser, &nzconfig);
}
#endif /* HAVE_LMDB */
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
return result;
}
static void
newzone_cfgctx_destroy(void **cfgp) {
ns_cfgctx_t *cfg;
REQUIRE(cfgp != NULL && *cfgp != NULL);
cfg = *cfgp;
if (cfg->conf_parser != NULL) {
if (cfg->config != NULL) {
cfg_obj_destroy(cfg->conf_parser, &cfg->config);
}
if (cfg->vconfig != NULL) {
cfg_obj_destroy(cfg->conf_parser, &cfg->vconfig);
}
cfg_parser_destroy(&cfg->conf_parser);
}
if (cfg->add_parser != NULL) {
if (cfg->nzf_config != NULL) {
cfg_obj_destroy(cfg->add_parser, &cfg->nzf_config);
}
cfg_parser_destroy(&cfg->add_parser);
}
if (cfg->actx != NULL) {
cfg_aclconfctx_detach(&cfg->actx);
}
isc_mem_putanddetach(&cfg->mctx, cfg, sizeof(*cfg));
*cfgp = NULL;
}
isc_result_t
named_server_signing(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result = ISC_R_SUCCESS;
dns_zone_t *zone = NULL;
dns_name_t *origin;
dns_db_t *db = NULL;
dns_dbnode_t *node = NULL;
dns_dbversion_t *version = NULL;
dns_rdatatype_t privatetype;
dns_rdataset_t privset;
bool first = true;
bool list = false, clear = false;
bool chain = false;
bool setserial = false;
bool resalt = false;
uint32_t serial = 0;
char keystr[DNS_SECALG_FORMATSIZE + 7]; /* <5-digit keyid>/<alg> */
unsigned short hash = 0, flags = 0, iter = 0, saltlen = 0;
unsigned char salt[255];
const char *ptr;
size_t n;
bool kasp = false;
REQUIRE(text != NULL);
dns_rdataset_init(&privset);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find out what we are to do. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcasecmp(ptr, "-list") == 0) {
list = true;
} else if ((strcasecmp(ptr, "-clear") == 0) ||
(strcasecmp(ptr, "-clean") == 0))
{
clear = true;
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
strlcpy(keystr, ptr, sizeof(keystr));
} else if (strcasecmp(ptr, "-nsec3param") == 0) {
char hashbuf[64], flagbuf[64], iterbuf[64];
char nbuf[256];
chain = true;
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcasecmp(ptr, "none") == 0) {
hash = 0;
} else {
strlcpy(hashbuf, ptr, sizeof(hashbuf));
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
strlcpy(flagbuf, ptr, sizeof(flagbuf));
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
strlcpy(iterbuf, ptr, sizeof(iterbuf));
n = snprintf(nbuf, sizeof(nbuf), "%s %s %s", hashbuf,
flagbuf, iterbuf);
if (n == sizeof(nbuf)) {
return ISC_R_NOSPACE;
}
n = sscanf(nbuf, "%hu %hu %hu", &hash, &flags, &iter);
if (n != 3U) {
return ISC_R_BADNUMBER;
}
if (hash > 0xffU || flags > 0xffU ||
iter > dns_nsec3_maxiterations())
{
return ISC_R_RANGE;
}
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
} else if (strcasecmp(ptr, "auto") == 0) {
/* Auto-generate a random salt.
* XXXMUKS: This currently uses the
* minimum recommended length by RFC
* 5155 (64 bits). It should be made
* configurable.
*/
saltlen = 8;
resalt = true;
} else if (strcmp(ptr, "-") != 0) {
isc_buffer_t buf;
isc_buffer_init(&buf, salt, sizeof(salt));
CHECK(isc_hex_decodestring(ptr, &buf));
saltlen = isc_buffer_usedlength(&buf);
}
}
} else if (strcasecmp(ptr, "-serial") == 0) {
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
CHECK(isc_parse_uint32(&serial, ptr, 10));
setserial = true;
} else {
CHECK(DNS_R_SYNTAX);
}
CHECK(zone_from_args(server, lex, NULL, &zone, NULL, text, false));
if (zone == NULL) {
CHECK(ISC_R_UNEXPECTEDEND);
}
if (dns_zone_getkasp(zone) != NULL) {
kasp = true;
}
if (clear) {
CHECK(dns_zone_keydone(zone, keystr));
(void)putstr(text, "request queued");
(void)putnull(text);
} else if (chain && !kasp) {
CHECK(dns_zone_setnsec3param(
zone, (uint8_t)hash, (uint8_t)flags, iter,
(uint8_t)saltlen, salt, true, resalt));
(void)putstr(text, "nsec3param request queued");
(void)putnull(text);
} else if (setserial) {
CHECK(dns_zone_setserial(zone, serial));
(void)putstr(text, "serial request queued");
(void)putnull(text);
} else if (list) {
privatetype = dns_zone_getprivatetype(zone);
origin = dns_zone_getorigin(zone);
CHECK(dns_zone_getdb(zone, &db));
CHECK(dns_db_findnode(db, origin, false, &node));
dns_db_currentversion(db, &version);
result = dns_db_findrdataset(db, node, version, privatetype,
dns_rdatatype_none, 0, &privset,
NULL);
if (result == ISC_R_NOTFOUND) {
(void)putstr(text, "No signing records found");
(void)putnull(text);
result = ISC_R_SUCCESS;
goto cleanup;
}
for (result = dns_rdataset_first(&privset);
result == ISC_R_SUCCESS;
result = dns_rdataset_next(&privset))
{
dns_rdata_t priv = DNS_RDATA_INIT;
/*
* In theory, the output buffer could hold a full RDATA
* record which is 16-bit and then some text around
* it
*/
char output[UINT16_MAX + BUFSIZ];
isc_buffer_t buf;
dns_rdataset_current(&privset, &priv);
isc_buffer_init(&buf, output, sizeof(output));
CHECK(dns_private_totext(&priv, &buf));
if (!first) {
CHECK(putstr(text, "\n"));
}
CHECK(putstr(text, output));
first = false;
}
if (!first) {
CHECK(putnull(text));
}
if (result == ISC_R_NOMORE) {
result = ISC_R_SUCCESS;
}
} else if (kasp) {
(void)putstr(text, "zone uses dnssec-policy, use rndc dnssec "
"command instead");
(void)putnull(text);
}
cleanup:
if (dns_rdataset_isassociated(&privset)) {
dns_rdataset_disassociate(&privset);
}
if (node != NULL) {
dns_db_detachnode(db, &node);
}
if (version != NULL) {
dns_db_closeversion(db, &version, false);
}
if (db != NULL) {
dns_db_detach(&db);
}
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
static bool
argcheck(char *cmd, const char *full) {
size_t l;
if (cmd == NULL || cmd[0] != '-') {
return false;
}
cmd++;
l = strlen(cmd);
if (l > strlen(full) || strncasecmp(cmd, full, l) != 0) {
return false;
}
return true;
}
isc_result_t
named_server_dnssec(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result = ISC_R_SUCCESS;
dns_zone_t *zone = NULL;
dns_kasp_t *kasp = NULL;
dns_dnsseckeylist_t keys;
dns_dnsseckey_t *key;
char *ptr, *zonetext = NULL;
const char *msg = NULL;
/* variables for -checkds */
bool checkds = false, dspublish = false;
/* variables for -rollover */
bool rollover = false;
/* variables for -key */
bool use_keyid = false;
dns_keytag_t keyid = 0;
uint8_t algorithm = 0;
/* variables for -status */
bool status = false;
char output[4096];
isc_stdtime_t now, when;
isc_time_t timenow, timewhen;
dns_db_t *db = NULL;
dns_dbversion_t *version = NULL;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find out what we are to do. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Initialize current time and key list. */
timenow = isc_time_now();
now = isc_time_seconds(&timenow);
when = now;
ISC_LIST_INIT(keys);
if (strcasecmp(ptr, "-status") == 0) {
status = true;
} else if (strcasecmp(ptr, "-rollover") == 0) {
rollover = true;
} else if (strcasecmp(ptr, "-checkds") == 0) {
checkds = true;
} else {
CHECK(DNS_R_SYNTAX);
}
if (rollover || checkds) {
/* Check for options */
for (;;) {
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "Bad format";
CHECK(ISC_R_UNEXPECTEDEND);
} else if (argcheck(ptr, "alg")) {
isc_consttextregion_t alg;
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "No key algorithm specified";
CHECK(ISC_R_UNEXPECTEDEND);
}
alg.base = ptr;
alg.length = strlen(alg.base);
result = dns_secalg_fromtext(
&algorithm, (isc_textregion_t *)&alg);
if (result != ISC_R_SUCCESS) {
msg = "Bad algorithm";
CHECK(DNS_R_SYNTAX);
}
continue;
} else if (argcheck(ptr, "key")) {
uint16_t id;
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "No key identifier specified";
CHECK(ISC_R_UNEXPECTEDEND);
}
CHECK(isc_parse_uint16(&id, ptr, 10));
keyid = (dns_keytag_t)id;
use_keyid = true;
continue;
} else if (argcheck(ptr, "when")) {
uint32_t tw;
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "No time specified";
CHECK(ISC_R_UNEXPECTEDEND);
}
CHECK(dns_time32_fromtext(ptr, &tw));
when = (isc_stdtime_t)tw;
continue;
} else if (ptr[0] == '-') {
msg = "Unknown option";
CHECK(DNS_R_SYNTAX);
} else if (checkds) {
/*
* No arguments provided, so we must be
* parsing "published|withdrawn".
*/
if (strcasecmp(ptr, "published") == 0) {
dspublish = true;
} else if (strcasecmp(ptr, "withdrawn") != 0) {
CHECK(DNS_R_SYNTAX);
}
} else if (rollover) {
/*
* No arguments provided, so we must be
* parsing the zone.
*/
zonetext = ptr;
}
break;
}
if (rollover && !use_keyid) {
msg = "Key id is required when scheduling rollover";
CHECK(DNS_R_SYNTAX);
}
if (algorithm > 0 && !use_keyid) {
msg = "Key id is required when setting algorithm";
CHECK(DNS_R_SYNTAX);
}
}
/* Get zone. */
CHECK(zone_from_args(server, lex, zonetext, &zone, NULL, text, false));
if (zone == NULL) {
msg = "Zone not found";
CHECK(ISC_R_UNEXPECTEDEND);
}
/* Trailing garbage? */
ptr = next_token(lex, text);
if (ptr != NULL) {
msg = "Too many arguments";
CHECK(DNS_R_SYNTAX);
}
/* Get dnssec-policy. */
kasp = dns_zone_getkasp(zone);
if (kasp == NULL) {
msg = "Zone does not have dnssec-policy";
goto cleanup;
}
/* Get DNSSEC keys. */
CHECK(dns_zone_getdb(zone, &db));
dns_db_currentversion(db, &version);
LOCK(&kasp->lock);
result = dns_zone_getdnsseckeys(zone, db, version, now, &keys);
UNLOCK(&kasp->lock);
if (result != ISC_R_SUCCESS) {
if (result != ISC_R_NOTFOUND) {
goto cleanup;
}
}
if (status) {
/*
* Output the DNSSEC status of the key and signing policy.
*/
isc_result_t r;
LOCK(&kasp->lock);
r = dns_keymgr_status(kasp, &keys, now, &output[0],
sizeof(output));
UNLOCK(&kasp->lock);
CHECK(putstr(text, output));
if (r != ISC_R_SUCCESS) {
CHECK(putstr(text,
"\n\nStatus output is truncated..."));
}
} else if (checkds) {
/*
* Mark DS record has been seen, so it may move to the
* rumoured state.
*/
char whenbuf[80];
isc_time_set(&timewhen, when, 0);
isc_time_formattimestamp(&timewhen, whenbuf, sizeof(whenbuf));
isc_result_t ret;
LOCK(&kasp->lock);
if (use_keyid) {
result = dns_keymgr_checkds_id(kasp, &keys, now, when,
dspublish, keyid,
(unsigned int)algorithm);
} else {
result = dns_keymgr_checkds(kasp, &keys, now, when,
dspublish);
}
UNLOCK(&kasp->lock);
switch (result) {
case ISC_R_SUCCESS:
/*
* Rekey after checkds command because the next key
* event may have changed.
*/
dns_zone_rekey(zone, false);
if (use_keyid) {
char tagbuf[6];
snprintf(tagbuf, sizeof(tagbuf), "%u", keyid);
CHECK(putstr(text, "KSK "));
CHECK(putstr(text, tagbuf));
CHECK(putstr(text, ": "));
}
CHECK(putstr(text, "Marked DS as "));
if (dspublish) {
CHECK(putstr(text, "published "));
} else {
CHECK(putstr(text, "withdrawn "));
}
CHECK(putstr(text, "since "));
CHECK(putstr(text, whenbuf));
break;
case DNS_R_TOOMANYKEYS:
CHECK(putstr(text,
"Error: multiple possible keys found, "
"retry command with -key id"));
break;
default:
ret = result;
CHECK(putstr(text,
"Error executing checkds command: "));
CHECK(putstr(text, isc_result_totext(ret)));
break;
}
} else if (rollover) {
/*
* Manually rollover a key.
*/
char whenbuf[80];
isc_time_set(&timewhen, when, 0);
isc_time_formattimestamp(&timewhen, whenbuf, sizeof(whenbuf));
isc_result_t ret;
LOCK(&kasp->lock);
result = dns_keymgr_rollover(kasp, &keys, now, when, keyid,
(unsigned int)algorithm);
UNLOCK(&kasp->lock);
switch (result) {
case ISC_R_SUCCESS:
/*
* Rekey after rollover command because the next key
* event may have changed.
*/
dns_zone_rekey(zone, false);
if (use_keyid) {
char tagbuf[6];
snprintf(tagbuf, sizeof(tagbuf), "%u", keyid);
CHECK(putstr(text, "Key "));
CHECK(putstr(text, tagbuf));
CHECK(putstr(text, ": "));
}
CHECK(putstr(text, "Rollover scheduled on "));
CHECK(putstr(text, whenbuf));
break;
case DNS_R_TOOMANYKEYS:
CHECK(putstr(text,
"Error: multiple possible keys found, "
"retry command with -alg algorithm"));
break;
default:
ret = result;
CHECK(putstr(text,
"Error executing rollover command: "));
CHECK(putstr(text, isc_result_totext(ret)));
break;
}
}
CHECK(putnull(text));
cleanup:
if (msg != NULL) {
(void)putstr(text, msg);
(void)putnull(text);
}
if (version != NULL) {
dns_db_closeversion(db, &version, false);
}
if (db != NULL) {
dns_db_detach(&db);
}
while (!ISC_LIST_EMPTY(keys)) {
key = ISC_LIST_HEAD(keys);
ISC_LIST_UNLINK(keys, key, link);
dns_dnsseckey_destroy(dns_zone_getmctx(zone), &key);
}
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
static isc_result_t
putmem(isc_buffer_t **b, const char *str, size_t len) {
isc_result_t result;
result = isc_buffer_reserve(*b, (unsigned int)len);
if (result != ISC_R_SUCCESS) {
return ISC_R_NOSPACE;
}
isc_buffer_putmem(*b, (const unsigned char *)str, (unsigned int)len);
return ISC_R_SUCCESS;
}
static isc_result_t
putstr(isc_buffer_t **b, const char *str) {
return putmem(b, str, strlen(str));
}
static isc_result_t
putuint8(isc_buffer_t **b, uint8_t val) {
isc_result_t result;
result = isc_buffer_reserve(*b, 1);
if (result != ISC_R_SUCCESS) {
return ISC_R_NOSPACE;
}
isc_buffer_putuint8(*b, val);
return ISC_R_SUCCESS;
}
static isc_result_t
putnull(isc_buffer_t **b) {
return putuint8(b, 0);
}
isc_result_t
named_server_zonestatus(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result = ISC_R_SUCCESS;
dns_zone_t *zone = NULL, *raw = NULL, *mayberaw = NULL;
const char *type, *file;
char zonename[DNS_NAME_FORMATSIZE];
uint32_t serial, signed_serial, nodes;
char serbuf[16], sserbuf[16], nodebuf[16];
char resignbuf[DNS_NAME_FORMATSIZE + DNS_RDATATYPE_FORMATSIZE + 2];
char lbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char xbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char rbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char kbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
char rtbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
isc_time_t loadtime, expiretime, refreshtime;
isc_time_t refreshkeytime, resigntime;
dns_zonetype_t zonetype;
bool dynamic = false, frozen = false;
bool hasraw = false;
bool secure, maintain, allow;
dns_db_t *db = NULL, *rawdb = NULL;
char **incfiles = NULL;
int nfiles = 0;
REQUIRE(text != NULL);
isc_time_settoepoch(&loadtime);
isc_time_settoepoch(&refreshtime);
isc_time_settoepoch(&expiretime);
isc_time_settoepoch(&refreshkeytime);
isc_time_settoepoch(&resigntime);
CHECK(zone_from_args(server, lex, NULL, &zone, zonename, text, true));
if (zone == NULL) {
result = ISC_R_UNEXPECTEDEND;
goto cleanup;
}
/* Inline signing? */
CHECK(dns_zone_getdb(zone, &db));
dns_zone_getraw(zone, &raw);
hasraw = (raw != NULL);
if (hasraw) {
mayberaw = raw;
zonetype = dns_zone_gettype(raw);
CHECK(dns_zone_getdb(raw, &rawdb));
} else {
mayberaw = zone;
zonetype = dns_zone_gettype(zone);
}
type = dns_zonetype_name(zonetype);
/* Serial number */
result = dns_zone_getserial(mayberaw, &serial);
/* This is to mirror old behavior with dns_zone_getserial */
if (result != ISC_R_SUCCESS) {
serial = 0;
}
snprintf(serbuf, sizeof(serbuf), "%u", serial);
if (hasraw) {
result = dns_zone_getserial(zone, &signed_serial);
if (result != ISC_R_SUCCESS) {
serial = 0;
}
snprintf(sserbuf, sizeof(sserbuf), "%u", signed_serial);
}
/* Database node count */
nodes = dns_db_nodecount(hasraw ? rawdb : db, dns_dbtree_main);
snprintf(nodebuf, sizeof(nodebuf), "%u", nodes);
/* Security */
secure = dns_db_issecure(db);
allow = ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_ALLOW) != 0);
maintain = ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_MAINTAIN) != 0);
/* Master files */
file = dns_zone_getfile(mayberaw);
nfiles = dns_zone_getincludes(mayberaw, &incfiles);
/* Load time */
dns_zone_getloadtime(zone, &loadtime);
isc_time_formathttptimestamp(&loadtime, lbuf, sizeof(lbuf));
/* Refresh/expire times */
if (zonetype == dns_zone_secondary || zonetype == dns_zone_mirror ||
zonetype == dns_zone_stub || zonetype == dns_zone_redirect)
{
dns_zone_getexpiretime(mayberaw, &expiretime);
isc_time_formathttptimestamp(&expiretime, xbuf, sizeof(xbuf));
dns_zone_getrefreshtime(mayberaw, &refreshtime);
isc_time_formathttptimestamp(&refreshtime, rbuf, sizeof(rbuf));
}
/* Key refresh time */
if (zonetype == dns_zone_primary ||
(zonetype == dns_zone_secondary && hasraw))
{
dns_zone_getrefreshkeytime(zone, &refreshkeytime);
isc_time_formathttptimestamp(&refreshkeytime, kbuf,
sizeof(kbuf));
}
/* Dynamic? */
if (zonetype == dns_zone_primary) {
dynamic = dns_zone_isdynamic(mayberaw, true);
frozen = dynamic && !dns_zone_isdynamic(mayberaw, false);
}
/* Next resign event */
if (secure && (zonetype == dns_zone_primary ||
(zonetype == dns_zone_secondary && hasraw)))
{
dns_name_t *name;
dns_fixedname_t fixed;
isc_stdtime_t resign;
dns_typepair_t typepair;
name = dns_fixedname_initname(&fixed);
result = dns_db_getsigningtime(db, &resign, name, &typepair);
if (result == ISC_R_SUCCESS) {
char namebuf[DNS_NAME_FORMATSIZE];
char typebuf[DNS_RDATATYPE_FORMATSIZE];
resign -= dns_zone_getsigresigninginterval(zone);
dns_name_format(name, namebuf, sizeof(namebuf));
dns_rdatatype_format(DNS_TYPEPAIR_COVERS(typepair),
typebuf, sizeof(typebuf));
snprintf(resignbuf, sizeof(resignbuf), "%s/%s", namebuf,
typebuf);
isc_time_set(&resigntime, resign, 0);
isc_time_formathttptimestamp(&resigntime, rtbuf,
sizeof(rtbuf));
}
}
/* Create text */
CHECK(putstr(text, "name: "));
CHECK(putstr(text, zonename));
CHECK(putstr(text, "\ntype: "));
CHECK(putstr(text, type));
if (file != NULL) {
int i;
CHECK(putstr(text, "\nfiles: "));
CHECK(putstr(text, file));
for (i = 0; i < nfiles; i++) {
CHECK(putstr(text, ", "));
if (incfiles[i] != NULL) {
CHECK(putstr(text, incfiles[i]));
}
}
}
CHECK(putstr(text, "\nserial: "));
CHECK(putstr(text, serbuf));
if (hasraw) {
CHECK(putstr(text, "\nsigned serial: "));
CHECK(putstr(text, sserbuf));
}
CHECK(putstr(text, "\nnodes: "));
CHECK(putstr(text, nodebuf));
if (!isc_time_isepoch(&loadtime)) {
CHECK(putstr(text, "\nlast loaded: "));
CHECK(putstr(text, lbuf));
}
if (!isc_time_isepoch(&refreshtime)) {
CHECK(putstr(text, "\nnext refresh: "));
CHECK(putstr(text, rbuf));
}
if (!isc_time_isepoch(&expiretime)) {
CHECK(putstr(text, "\nexpires: "));
CHECK(putstr(text, xbuf));
}
if (secure) {
CHECK(putstr(text, "\nsecure: yes"));
if (hasraw) {
CHECK(putstr(text, "\ninline signing: yes"));
} else {
CHECK(putstr(text, "\ninline signing: no"));
}
} else {
CHECK(putstr(text, "\nsecure: no"));
}
if (maintain) {
CHECK(putstr(text, "\nkey maintenance: automatic"));
if (!isc_time_isepoch(&refreshkeytime)) {
CHECK(putstr(text, "\nnext key event: "));
CHECK(putstr(text, kbuf));
}
} else if (allow) {
CHECK(putstr(text, "\nkey maintenance: on command"));
} else if (secure || hasraw) {
CHECK(putstr(text, "\nkey maintenance: none"));
}
if (!isc_time_isepoch(&resigntime)) {
CHECK(putstr(text, "\nnext resign node: "));
CHECK(putstr(text, resignbuf));
CHECK(putstr(text, "\nnext resign time: "));
CHECK(putstr(text, rtbuf));
}
if (dynamic) {
CHECK(putstr(text, "\ndynamic: yes"));
if (frozen) {
CHECK(putstr(text, "\nfrozen: yes"));
} else {
CHECK(putstr(text, "\nfrozen: no"));
}
} else {
CHECK(putstr(text, "\ndynamic: no"));
}
CHECK(putstr(text, "\nreconfigurable via modzone: "));
CHECK(putstr(text, dns_zone_getadded(zone) ? "yes" : "no"));
cleanup:
/* Indicate truncated output if possible. */
if (result == ISC_R_NOSPACE) {
(void)putstr(text, "\n...");
}
if (result == ISC_R_SUCCESS || result == ISC_R_NOSPACE) {
(void)putnull(text);
}
if (db != NULL) {
dns_db_detach(&db);
}
if (rawdb != NULL) {
dns_db_detach(&rawdb);
}
if (incfiles != NULL && mayberaw != NULL) {
int i;
isc_mem_t *mctx = dns_zone_getmctx(mayberaw);
for (i = 0; i < nfiles; i++) {
if (incfiles[i] != NULL) {
isc_mem_free(mctx, incfiles[i]);
}
}
isc_mem_free(mctx, incfiles);
}
if (raw != NULL) {
dns_zone_detach(&raw);
}
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
isc_result_t
named_server_nta(named_server_t *server, isc_lex_t *lex, bool readonly,
isc_buffer_t **text) {
dns_view_t *view;
dns_ntatable_t *ntatable = NULL;
isc_result_t result = ISC_R_SUCCESS;
char *ptr, *nametext = NULL, *viewname;
char namebuf[DNS_NAME_FORMATSIZE];
char viewbuf[DNS_NAME_FORMATSIZE];
isc_stdtime_t now, when;
isc_time_t t;
char tbuf[64];
const char *msg = NULL;
bool dump = false, force = false;
dns_fixedname_t fn;
const dns_name_t *ntaname;
dns_name_t *fname;
dns_ttl_t ntattl;
bool ttlset = false, viewfound = false;
dns_rdataclass_t rdclass = dns_rdataclass_in;
bool first = true;
REQUIRE(text != NULL);
UNUSED(force);
fname = dns_fixedname_initname(&fn);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
for (;;) {
/* Check for options */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcmp(ptr, "--") == 0) {
break;
} else if (argcheck(ptr, "dump")) {
dump = true;
} else if (argcheck(ptr, "remove")) {
ntattl = 0;
ttlset = true;
} else if (argcheck(ptr, "force")) {
force = true;
continue;
} else if (argcheck(ptr, "lifetime")) {
isc_textregion_t tr;
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "No lifetime specified";
CHECK(ISC_R_UNEXPECTEDEND);
}
tr.base = ptr;
tr.length = strlen(ptr);
result = dns_ttl_fromtext(&tr, &ntattl);
if (result != ISC_R_SUCCESS) {
msg = "could not parse NTA lifetime";
CHECK(result);
}
if (ntattl > 604800) {
msg = "NTA lifetime cannot exceed one week";
CHECK(ISC_R_RANGE);
}
ttlset = true;
continue;
} else if (argcheck(ptr, "class")) {
isc_textregion_t tr;
ptr = next_token(lex, text);
if (ptr == NULL) {
msg = "No class specified";
CHECK(ISC_R_UNEXPECTEDEND);
}
tr.base = ptr;
tr.length = strlen(ptr);
CHECK(dns_rdataclass_fromtext(&rdclass, &tr));
continue;
} else if (ptr[0] == '-') {
msg = "Unknown option";
CHECK(DNS_R_SYNTAX);
} else {
nametext = ptr;
}
break;
}
/*
* If -dump was specified, list NTA's and return
*/
if (dump) {
size_t last = 0;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
result = dns_view_getntatable(view, &ntatable);
if (result == ISC_R_NOTFOUND) {
continue;
}
if (last != isc_buffer_usedlength(*text)) {
CHECK(putstr(text, "\n"));
}
last = isc_buffer_usedlength(*text);
CHECK(dns_ntatable_totext(ntatable, view->name, text));
}
CHECK(putnull(text));
goto cleanup;
}
if (readonly) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_CONTROL, ISC_LOG_INFO,
"rejecting restricted control channel "
"NTA command");
CHECK(ISC_R_FAILURE);
}
/* Get the NTA name if not found above. */
if (nametext == NULL) {
nametext = next_token(lex, text);
}
if (nametext == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Copy nametext as it'll be overwritten by next_token() */
strlcpy(namebuf, nametext, DNS_NAME_FORMATSIZE);
if (strcmp(namebuf, ".") == 0) {
ntaname = dns_rootname;
} else {
isc_buffer_t b;
isc_buffer_init(&b, namebuf, strlen(namebuf));
isc_buffer_add(&b, strlen(namebuf));
CHECK(dns_name_fromtext(fname, &b, dns_rootname, 0, NULL));
ntaname = fname;
}
/* Look for the view name. */
viewname = next_token(lex, text);
if (viewname != NULL) {
strlcpy(viewbuf, viewname, DNS_NAME_FORMATSIZE);
viewname = viewbuf;
}
if (next_token(lex, text) != NULL) {
CHECK(DNS_R_SYNTAX);
}
now = isc_stdtime_now();
isc_loopmgr_pause(named_g_loopmgr);
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (viewname != NULL && strcmp(view->name, viewname) != 0) {
continue;
}
viewfound = true;
if (view->rdclass != rdclass && rdclass != dns_rdataclass_any) {
continue;
}
if (view->nta_lifetime == 0) {
continue;
}
if (!ttlset) {
ntattl = view->nta_lifetime;
}
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
result = dns_view_getntatable(view, &ntatable);
if (result == ISC_R_NOTFOUND) {
result = ISC_R_SUCCESS;
continue;
}
result = dns_view_flushnode(view, ntaname, true);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"flush tree '%s' in cache view '%s': %s", namebuf,
view->name, isc_result_totext(result));
if (ntattl != 0) {
CHECK(dns_ntatable_add(ntatable, ntaname, force, now,
ntattl));
when = now + ntattl;
isc_time_set(&t, when, 0);
isc_time_formattimestamp(&t, tbuf, sizeof(tbuf));
if (!first) {
CHECK(putstr(text, "\n"));
}
first = false;
CHECK(putstr(text, "Negative trust anchor added: "));
CHECK(putstr(text, namebuf));
CHECK(putstr(text, "/"));
CHECK(putstr(text, view->name));
CHECK(putstr(text, ", expires "));
CHECK(putstr(text, tbuf));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"added NTA '%s' (%d sec) in view '%s'",
namebuf, ntattl, view->name);
} else {
bool wasremoved;
result = dns_ntatable_delete(ntatable, ntaname);
if (result == ISC_R_SUCCESS) {
wasremoved = true;
} else if (result == ISC_R_NOTFOUND) {
wasremoved = false;
} else {
goto cleanup_exclusive;
}
if (!first) {
CHECK(putstr(text, "\n"));
}
first = false;
CHECK(putstr(text, "Negative trust anchor "));
CHECK(putstr(text,
wasremoved ? "removed: " : "not found: "));
CHECK(putstr(text, namebuf));
CHECK(putstr(text, "/"));
CHECK(putstr(text, view->name));
if (wasremoved) {
isc_log_write(
named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"removed NTA '%s' in view %s", namebuf,
view->name);
}
}
result = dns_view_saventa(view);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"error writing NTA file "
"for view '%s': %s",
view->name, isc_result_totext(result));
}
}
if (!viewfound) {
msg = "No such view";
result = ISC_R_NOTFOUND;
} else {
(void)putnull(text);
}
cleanup_exclusive:
isc_loopmgr_resume(named_g_loopmgr);
cleanup:
if (msg != NULL) {
(void)putstr(text, msg);
(void)putnull(text);
}
if (ntatable != NULL) {
dns_ntatable_detach(&ntatable);
}
return result;
}
isc_result_t
named_server_saventa(named_server_t *server) {
dns_view_t *view;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
isc_result_t result = dns_view_saventa(view);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"error writing NTA file "
"for view '%s': %s",
view->name, isc_result_totext(result));
}
}
return ISC_R_SUCCESS;
}
isc_result_t
named_server_loadnta(named_server_t *server) {
dns_view_t *view;
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
isc_result_t result = dns_view_loadnta(view);
if ((result != ISC_R_SUCCESS) &&
(result != ISC_R_FILENOTFOUND) &&
(result != ISC_R_NOTFOUND))
{
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"error loading NTA file "
"for view '%s': %s",
view->name, isc_result_totext(result));
}
}
return ISC_R_SUCCESS;
}
static isc_result_t
mkey_refresh(dns_view_t *view, isc_buffer_t **text) {
isc_result_t result;
char msg[DNS_NAME_FORMATSIZE + 500] = "";
snprintf(msg, sizeof(msg), "refreshing managed keys for '%s'",
view->name);
CHECK(putstr(text, msg));
CHECK(dns_zone_synckeyzone(view->managed_keys));
cleanup:
return result;
}
static isc_result_t
mkey_destroy(dns_view_t *view, isc_buffer_t **text) {
isc_result_t result;
char msg[DNS_NAME_FORMATSIZE + 500] = "";
const char *file = NULL;
dns_db_t *dbp = NULL;
dns_zone_t *mkzone = NULL;
bool removed_a_file = false;
if (view->managed_keys == NULL) {
CHECK(ISC_R_NOTFOUND);
}
snprintf(msg, sizeof(msg), "destroying managed-keys database for '%s'",
view->name);
CHECK(putstr(text, msg));
isc_loopmgr_pause(named_g_loopmgr);
/* Remove and clean up managed keys zone from view */
mkzone = view->managed_keys;
view->managed_keys = NULL;
(void)dns_zone_flush(mkzone);
/* Unload zone database */
if (dns_zone_getdb(mkzone, &dbp) == ISC_R_SUCCESS) {
dns_db_detach(&dbp);
dns_zone_unload(mkzone);
}
/* Delete files */
file = dns_zone_getfile(mkzone);
result = isc_file_remove(file);
if (result == ISC_R_SUCCESS) {
removed_a_file = true;
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
file = dns_zone_getjournal(mkzone);
result = isc_file_remove(file);
if (result == ISC_R_SUCCESS) {
removed_a_file = true;
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING,
"file %s not removed: %s", file,
isc_result_totext(result));
}
if (!removed_a_file) {
CHECK(putstr(text, "error: no files could be removed"));
CHECK(ISC_R_FAILURE);
}
dns_zone_detach(&mkzone);
result = ISC_R_SUCCESS;
cleanup:
isc_loopmgr_resume(named_g_loopmgr);
return result;
}
static isc_result_t
mkey_dumpzone(dns_view_t *view, isc_buffer_t **text) {
isc_result_t result;
dns_db_t *db = NULL;
dns_dbversion_t *ver = NULL;
dns_rriterator_t rrit;
isc_stdtime_t now = isc_stdtime_now();
dns_name_t *prevname = NULL;
CHECK(dns_zone_getdb(view->managed_keys, &db));
dns_db_currentversion(db, &ver);
dns_rriterator_init(&rrit, db, ver, 0);
for (result = dns_rriterator_first(&rrit); result == ISC_R_SUCCESS;
result = dns_rriterator_nextrrset(&rrit))
{
char buf[DNS_NAME_FORMATSIZE + 500];
dns_name_t *name = NULL;
dns_rdataset_t *kdset = NULL;
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdata_keydata_t kd;
uint32_t ttl;
dns_rriterator_current(&rrit, &name, &ttl, &kdset, NULL);
if (kdset == NULL || kdset->type != dns_rdatatype_keydata ||
!dns_rdataset_isassociated(kdset))
{
continue;
}
if (name != prevname) {
char nbuf[DNS_NAME_FORMATSIZE];
dns_name_format(name, nbuf, sizeof(nbuf));
snprintf(buf, sizeof(buf), "\n\n name: %s", nbuf);
CHECK(putstr(text, buf));
}
for (result = dns_rdataset_first(kdset);
result == ISC_R_SUCCESS; result = dns_rdataset_next(kdset))
{
char alg[DNS_SECALG_FORMATSIZE];
char tbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
dns_keytag_t keyid;
isc_region_t r;
isc_time_t t;
bool revoked;
dns_rdata_reset(&rdata);
dns_rdataset_current(kdset, &rdata);
result = dns_rdata_tostruct(&rdata, &kd, NULL);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
dns_rdata_toregion(&rdata, &r);
isc_region_consume(&r, 12);
keyid = dst_region_computeid(&r);
snprintf(buf, sizeof(buf), "\n keyid: %u", keyid);
CHECK(putstr(text, buf));
dns_secalg_format(kd.algorithm, alg, sizeof(alg));
snprintf(buf, sizeof(buf), "\n\talgorithm: %s", alg);
CHECK(putstr(text, buf));
revoked = ((kd.flags & DNS_KEYFLAG_REVOKE) != 0);
snprintf(buf, sizeof(buf), "\n\tflags:%s%s%s",
revoked ? " REVOKE" : "",
((kd.flags & DNS_KEYFLAG_KSK) != 0) ? " SEP"
: "",
(kd.flags == 0) ? " (none)" : "");
CHECK(putstr(text, buf));
isc_time_set(&t, kd.refresh, 0);
isc_time_formathttptimestamp(&t, tbuf, sizeof(tbuf));
snprintf(buf, sizeof(buf), "\n\tnext refresh: %s",
tbuf);
CHECK(putstr(text, buf));
if (kd.removehd != 0) {
isc_time_set(&t, kd.removehd, 0);
isc_time_formathttptimestamp(&t, tbuf,
sizeof(tbuf));
snprintf(buf, sizeof(buf), "\n\tremove at: %s",
tbuf);
CHECK(putstr(text, buf));
}
isc_time_set(&t, kd.addhd, 0);
isc_time_formathttptimestamp(&t, tbuf, sizeof(tbuf));
if (kd.addhd == 0) {
snprintf(buf, sizeof(buf), "\n\tno trust");
} else if (revoked) {
snprintf(buf, sizeof(buf), "\n\ttrust revoked");
} else if (kd.addhd <= now) {
snprintf(buf, sizeof(buf),
"\n\ttrusted since: %s", tbuf);
} else if (kd.addhd > now) {
snprintf(buf, sizeof(buf),
"\n\ttrust pending: %s", tbuf);
}
CHECK(putstr(text, buf));
}
}
if (result == ISC_R_NOMORE) {
result = ISC_R_SUCCESS;
}
cleanup:
if (ver != NULL) {
dns_rriterator_destroy(&rrit);
dns_db_closeversion(db, &ver, false);
}
if (db != NULL) {
dns_db_detach(&db);
}
return result;
}
static isc_result_t
mkey_status(dns_view_t *view, isc_buffer_t **text) {
isc_result_t result;
char msg[ISC_FORMATHTTPTIMESTAMP_SIZE];
isc_time_t t;
CHECK(putstr(text, "view: "));
CHECK(putstr(text, view->name));
CHECK(putstr(text, "\nnext scheduled event: "));
dns_zone_getrefreshkeytime(view->managed_keys, &t);
if (isc_time_isepoch(&t)) {
CHECK(putstr(text, "never"));
} else {
isc_time_formathttptimestamp(&t, msg, sizeof(msg));
CHECK(putstr(text, msg));
}
CHECK(mkey_dumpzone(view, text));
cleanup:
return result;
}
isc_result_t
named_server_mkeys(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
char *cmd, *classtxt, *viewtxt = NULL;
isc_result_t result = ISC_R_SUCCESS;
dns_view_t *view = NULL;
dns_rdataclass_t rdclass;
char msg[DNS_NAME_FORMATSIZE + 500] = "";
enum { NONE, STAT, REFRESH, SYNC, DESTROY } opt = NONE;
bool found = false;
bool first = true;
REQUIRE(text != NULL);
/* Skip rndc command name */
cmd = next_token(lex, text);
if (cmd == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Get managed-keys subcommand */
cmd = next_token(lex, text);
if (cmd == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcasecmp(cmd, "status") == 0) {
opt = STAT;
} else if (strcasecmp(cmd, "refresh") == 0) {
opt = REFRESH;
} else if (strcasecmp(cmd, "sync") == 0) {
opt = SYNC;
} else if (strcasecmp(cmd, "destroy") == 0) {
opt = DESTROY;
} else {
snprintf(msg, sizeof(msg), "unknown command '%s'", cmd);
(void)putstr(text, msg);
result = ISC_R_UNEXPECTED;
goto cleanup;
}
/* Look for the optional class name. */
classtxt = next_token(lex, text);
if (classtxt != NULL) {
isc_textregion_t r;
r.base = classtxt;
r.length = strlen(classtxt);
result = dns_rdataclass_fromtext(&rdclass, &r);
if (result != ISC_R_SUCCESS) {
snprintf(msg, sizeof(msg), "unknown class '%s'",
classtxt);
(void)putstr(text, msg);
goto cleanup;
}
viewtxt = next_token(lex, text);
}
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
if (viewtxt != NULL && (rdclass != view->rdclass ||
strcmp(view->name, viewtxt) != 0))
{
continue;
}
if (view->managed_keys == NULL) {
if (viewtxt != NULL) {
snprintf(msg, sizeof(msg),
"view '%s': no managed keys", viewtxt);
CHECK(putstr(text, msg));
goto cleanup;
} else {
continue;
}
}
found = true;
switch (opt) {
case REFRESH:
if (!first) {
CHECK(putstr(text, "\n"));
}
CHECK(mkey_refresh(view, text));
break;
case STAT:
if (!first) {
CHECK(putstr(text, "\n\n"));
}
CHECK(mkey_status(view, text));
break;
case SYNC:
CHECK(dns_zone_flush(view->managed_keys));
break;
case DESTROY:
if (!first) {
CHECK(putstr(text, "\n"));
}
CHECK(mkey_destroy(view, text));
break;
default:
UNREACHABLE();
}
if (viewtxt != NULL) {
break;
}
first = false;
}
if (!found) {
CHECK(putstr(text, "no views with managed keys"));
}
cleanup:
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
return result;
}
isc_result_t
named_server_dnstap(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
#ifdef HAVE_DNSTAP
char *ptr;
isc_result_t result;
bool reopen = false;
int backups = 0;
REQUIRE(text != NULL);
if (server->dtenv == NULL) {
return ISC_R_NOTFOUND;
}
/* Check the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* "dnstap-reopen" was used in 9.11.0b1 */
if (strcasecmp(ptr, "dnstap-reopen") == 0) {
reopen = true;
} else {
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
}
if (reopen || strcasecmp(ptr, "-reopen") == 0) {
backups = ISC_LOG_ROLLNEVER;
} else if (strcasecmp(ptr, "-roll") == 0) {
unsigned int n;
ptr = next_token(lex, text);
if (ptr != NULL) {
unsigned int u;
n = sscanf(ptr, "%u", &u);
if (n != 1U || u > INT_MAX) {
return ISC_R_BADNUMBER;
}
backups = u;
} else {
backups = ISC_LOG_ROLLINFINITE;
}
} else {
return DNS_R_SYNTAX;
}
result = dns_dt_reopen(server->dtenv, backups);
return result;
#else /* ifdef HAVE_DNSTAP */
UNUSED(server);
UNUSED(lex);
UNUSED(text);
return ISC_R_NOTIMPLEMENTED;
#endif /* ifdef HAVE_DNSTAP */
}
isc_result_t
named_server_tcptimeouts(isc_lex_t *lex, isc_buffer_t **text) {
char *ptr;
isc_result_t result = ISC_R_SUCCESS;
uint32_t initial, idle, keepalive, advertised;
char msg[128];
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
isc_nm_gettimeouts(named_g_netmgr, &initial, &idle, &keepalive,
&advertised);
/* Look for optional arguments. */
ptr = next_token(lex, NULL);
if (ptr != NULL) {
CHECK(isc_parse_uint32(&initial, ptr, 10));
initial *= 100;
if (initial > MAX_INITIAL_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
if (initial < MIN_INITIAL_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
CHECK(isc_parse_uint32(&idle, ptr, 10));
idle *= 100;
if (idle > MAX_IDLE_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
if (idle < MIN_IDLE_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
CHECK(isc_parse_uint32(&keepalive, ptr, 10));
keepalive *= 100;
if (keepalive > MAX_KEEPALIVE_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
if (keepalive < MIN_KEEPALIVE_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
CHECK(isc_parse_uint32(&advertised, ptr, 10));
advertised *= 100;
if (advertised > MAX_ADVERTISED_TIMEOUT) {
CHECK(ISC_R_RANGE);
}
isc_nm_settimeouts(named_g_netmgr, initial, idle, keepalive,
advertised);
}
snprintf(msg, sizeof(msg), "tcp-initial-timeout=%u\n", initial / 100);
CHECK(putstr(text, msg));
snprintf(msg, sizeof(msg), "tcp-idle-timeout=%u\n", idle / 100);
CHECK(putstr(text, msg));
snprintf(msg, sizeof(msg), "tcp-keepalive-timeout=%u\n",
keepalive / 100);
CHECK(putstr(text, msg));
snprintf(msg, sizeof(msg), "tcp-advertised-timeout=%u",
advertised / 100);
CHECK(putstr(text, msg));
cleanup:
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
return result;
}
isc_result_t
named_server_servestale(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
char *ptr, *classtxt, *viewtxt = NULL;
char msg[128];
dns_rdataclass_t rdclass = dns_rdataclass_in;
dns_view_t *view;
bool found = false;
dns_stale_answer_t staleanswersok = dns_stale_answer_conf;
bool wantstatus = false;
isc_result_t result = ISC_R_SUCCESS;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
!strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
{
staleanswersok = dns_stale_answer_yes;
} else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
!strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
{
staleanswersok = dns_stale_answer_no;
} else if (strcasecmp(ptr, "reset") == 0) {
staleanswersok = dns_stale_answer_conf;
} else if (!strcasecmp(ptr, "check") || !strcasecmp(ptr, "status")) {
wantstatus = true;
} else {
return DNS_R_SYNTAX;
}
/* Look for the optional class name. */
classtxt = next_token(lex, text);
if (classtxt != NULL) {
isc_textregion_t r;
/* Look for the optional view name. */
viewtxt = next_token(lex, text);
/*
* If 'classtext' is not a valid class then it us a view name.
*/
r.base = classtxt;
r.length = strlen(classtxt);
result = dns_rdataclass_fromtext(&rdclass, &r);
if (result != ISC_R_SUCCESS) {
if (viewtxt != NULL) {
snprintf(msg, sizeof(msg), "unknown class '%s'",
classtxt);
(void)putstr(text, msg);
goto cleanup;
}
viewtxt = classtxt;
classtxt = NULL;
}
}
isc_loopmgr_pause(named_g_loopmgr);
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
dns_ttl_t stale_ttl = 0;
uint32_t stale_refresh = 0;
dns_db_t *db = NULL;
if (classtxt != NULL && rdclass != view->rdclass) {
continue;
}
if (viewtxt != NULL && strcmp(view->name, viewtxt) != 0) {
continue;
}
if (!wantstatus) {
view->staleanswersok = staleanswersok;
found = true;
continue;
}
db = NULL;
dns_db_attach(view->cachedb, &db);
(void)dns_db_getservestalettl(db, &stale_ttl);
(void)dns_db_getservestalerefresh(db, &stale_refresh);
dns_db_detach(&db);
if (found) {
CHECK(putstr(text, "\n"));
}
CHECK(putstr(text, view->name));
CHECK(putstr(text, ": "));
switch (view->staleanswersok) {
case dns_stale_answer_yes:
if (stale_ttl > 0) {
CHECK(putstr(text, "stale cache "
"enabled; stale "
"answers enabled"));
} else {
CHECK(putstr(text, "stale cache disabled; "
"stale "
"answers unavailable"));
}
break;
case dns_stale_answer_no:
if (stale_ttl > 0) {
CHECK(putstr(text, "stale cache "
"enabled; stale "
"answers disabled"));
} else {
CHECK(putstr(text, "stale cache disabled; "
"stale "
"answers unavailable"));
}
break;
case dns_stale_answer_conf:
if (view->staleanswersenable && stale_ttl > 0) {
CHECK(putstr(text, "stale cache "
"enabled; stale "
"answers enabled"));
} else if (stale_ttl > 0) {
CHECK(putstr(text, "stale cache "
"enabled; stale "
"answers disabled"));
} else {
CHECK(putstr(text, "stale cache disabled; "
"stale "
"answers unavailable"));
}
break;
}
if (stale_ttl > 0) {
snprintf(msg, sizeof(msg),
" (stale-answer-ttl=%u "
"max-stale-ttl=%u "
"stale-refresh-time=%u)",
view->staleanswerttl, stale_ttl,
stale_refresh);
CHECK(putstr(text, msg));
}
found = true;
}
if (!found) {
result = ISC_R_NOTFOUND;
}
cleanup:
isc_loopmgr_resume(named_g_loopmgr);
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
return result;
}
isc_result_t
named_server_fetchlimit(named_server_t *server, isc_lex_t *lex,
isc_buffer_t **text) {
isc_result_t result = ISC_R_SUCCESS;
dns_view_t *view = NULL;
char *ptr = NULL, *viewname = NULL;
bool first = true;
dns_adb_t *adb = NULL;
REQUIRE(text != NULL);
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Look for the view name. */
viewname = next_token(lex, text);
for (view = ISC_LIST_HEAD(server->viewlist); view != NULL;
view = ISC_LIST_NEXT(view, link))
{
char tbuf[100];
unsigned int used;
uint32_t val;
int s;
if (view->rdclass != dns_rdataclass_in) {
continue;
}
if (viewname != NULL && strcasecmp(view->name, viewname) != 0) {
continue;
}
dns_view_getadb(view, &adb);
if (adb == NULL) {
continue;
}
if (!first) {
CHECK(putstr(text, "\n"));
}
CHECK(putstr(text, "Rate limited servers, view "));
CHECK(putstr(text, view->name));
dns_adb_getquota(adb, &val, NULL, NULL, NULL, NULL);
s = snprintf(tbuf, sizeof(tbuf),
" (fetches-per-server %u):", val);
if (s < 0 || (unsigned int)s > sizeof(tbuf)) {
CHECK(ISC_R_NOSPACE);
}
first = false;
CHECK(putstr(text, tbuf));
used = isc_buffer_usedlength(*text);
CHECK(dns_adb_dumpquota(adb, text));
if (used == isc_buffer_usedlength(*text)) {
CHECK(putstr(text, "\n None."));
}
CHECK(putstr(text, "\nRate limited servers, view "));
CHECK(putstr(text, view->name));
val = dns_resolver_getfetchesperzone(view->resolver);
s = snprintf(tbuf, sizeof(tbuf),
" (fetches-per-zone %u):", val);
if (s < 0 || (unsigned int)s > sizeof(tbuf)) {
CHECK(ISC_R_NOSPACE);
}
CHECK(putstr(text, tbuf));
used = isc_buffer_usedlength(*text);
CHECK(dns_resolver_dumpquota(view->resolver, text));
if (used == isc_buffer_usedlength(*text)) {
CHECK(putstr(text, "\n None."));
}
dns_adb_detach(&adb);
}
cleanup:
if (adb != NULL) {
dns_adb_detach(&adb);
}
if (isc_buffer_usedlength(*text) > 0) {
(void)putnull(text);
}
return result;
}
isc_result_t
named_server_skr(named_server_t *server, isc_lex_t *lex, isc_buffer_t **text) {
isc_result_t result = ISC_R_SUCCESS;
dns_zone_t *zone = NULL;
dns_kasp_t *kasp = NULL;
const char *ptr;
char skrfile[PATH_MAX];
/* Skip the command name. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
/* Find out what we are to do. */
ptr = next_token(lex, text);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
if (strcasecmp(ptr, "-import") != 0) {
CHECK(DNS_R_SYNTAX);
}
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
(void)snprintf(skrfile, sizeof(skrfile), "%s", ptr);
CHECK(zone_from_args(server, lex, NULL, &zone, NULL, text, false));
if (zone == NULL) {
CHECK(ISC_R_UNEXPECTEDEND);
}
kasp = dns_zone_getkasp(zone);
if (kasp == NULL) {
CHECK(putstr(text, "zone does not have a dnssec-policy"));
CHECK(putnull(text));
goto cleanup;
}
if (!dns_kasp_offlineksk(kasp)) {
CHECK(putstr(text, "zone does not have offline-ksk enabled"));
CHECK(putnull(text));
goto cleanup;
}
result = dns_zone_import_skr(zone, skrfile);
if (result != ISC_R_SUCCESS) {
CHECK(putstr(text, "import failed: "));
CHECK(putstr(text, isc_result_totext(result)));
CHECK(putnull(text));
} else {
/* Schedule a rekey */
dns_zone_rekey(zone, false);
}
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
return result;
}
isc_result_t
named_server_togglememprof(isc_lex_t *lex) {
isc_result_t result = ISC_R_FAILURE;
bool active;
char *ptr;
/* Skip the command name. */
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
}
ptr = next_token(lex, NULL);
if (ptr == NULL) {
return ISC_R_UNEXPECTEDEND;
} else if (!strcasecmp(ptr, "dump")) {
result = memprof_dump();
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"failed to dump memory profile");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"memory profile dumped");
}
goto done;
} else if (!strcasecmp(ptr, "on") || !strcasecmp(ptr, "yes") ||
!strcasecmp(ptr, "enable") || !strcasecmp(ptr, "true"))
{
active = true;
} else if (!strcasecmp(ptr, "off") || !strcasecmp(ptr, "no") ||
!strcasecmp(ptr, "disable") || !strcasecmp(ptr, "false"))
{
active = false;
} else {
return DNS_R_SYNTAX;
}
result = memprof_toggle(active);
if (result != ISC_R_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"failed to toggle memory profiling");
} else {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"memory profiling %s",
active ? "enabled" : "disabled");
}
done:
return result;
}
#ifdef JEMALLOC_API_SUPPORTED
const char *
named_server_getmemprof(void) {
memprof_status status = MEMPROF_ON;
bool is_enabled;
size_t len = sizeof(is_enabled);
if (mallctl("config.prof", &is_enabled, &len, NULL, 0) != 0) {
status = MEMPROF_FAILING;
goto done;
}
INSIST(len == sizeof(is_enabled));
if (!is_enabled) {
status = MEMPROF_UNSUPPORTED;
goto done;
}
if (mallctl("opt.prof", &is_enabled, &len, NULL, 0) != 0) {
status = MEMPROF_FAILING;
goto done;
}
INSIST(len == sizeof(is_enabled));
if (!is_enabled) {
status = MEMPROF_INACTIVE;
goto done;
}
len = sizeof(is_enabled);
if (mallctl("prof.active", &is_enabled, &len, NULL, 0) != 0) {
status = MEMPROF_FAILING;
goto done;
}
INSIST(len == sizeof(is_enabled));
if (!is_enabled) {
status = MEMPROF_OFF;
}
done:
return memprof_status_text[status];
}
#else /* JEMALLOC_API_SUPPORTED */
const char *
named_server_getmemprof(void) {
return memprof_status_text[MEMPROF_UNSUPPORTED];
}
#endif /* JEMALLOC_API_SUPPORTED */
View git blame Copy permalink