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-rw-r--r--bin/nsupdate/Makefile.in86
-rw-r--r--bin/nsupdate/nsupdate.c3491
-rw-r--r--bin/nsupdate/nsupdate.rst357
-rw-r--r--bin/nsupdate/win32/nsupdate.vcxproj.filters.in18
-rw-r--r--bin/nsupdate/win32/nsupdate.vcxproj.in119
-rw-r--r--bin/nsupdate/win32/nsupdate.vcxproj.user3
6 files changed, 4074 insertions, 0 deletions
diff --git a/bin/nsupdate/Makefile.in b/bin/nsupdate/Makefile.in
new file mode 100644
index 0000000..37d5cb3
--- /dev/null
+++ b/bin/nsupdate/Makefile.in
@@ -0,0 +1,86 @@
+# 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.
+
+srcdir = @srcdir@
+VPATH = @srcdir@
+top_srcdir = @top_srcdir@
+
+VERSION=@BIND9_VERSION@
+
+@BIND9_MAKE_INCLUDES@
+
+READLINE_LIB = @READLINE_LIB@
+
+DST_GSSAPI_INC = @DST_GSSAPI_INC@
+
+CINCLUDES = ${DNS_INCLUDES} ${BIND9_INCLUDES} ${ISC_INCLUDES} \
+ ${ISCCFG_INCLUDES} ${IRS_INCLUDES} ${DST_GSSAPI_INC} \
+ ${OPENSSL_CFLAGS}
+
+CDEFINES = -DVERSION=\"${VERSION}\" @USE_GSSAPI@
+CWARNINGS =
+
+DNSLIBS = ../../lib/dns/libdns.@A@ @NO_LIBTOOL_DNSLIBS@
+BIND9LIBS = ../../lib/bind9/libbind9.@A@
+ISCLIBS = ../../lib/isc/libisc.@A@ @NO_LIBTOOL_ISCLIBS@
+ISCNOSYMLIBS = ../../lib/isc/libisc-nosymtbl.@A@ @NO_LIBTOOL_ISCLIBS@
+ISCCFGLIBS = ../../lib/isccfg/libisccfg.@A@
+IRSLIBS = ../../lib/irs/libirs.@A@
+
+DNSDEPLIBS = ../../lib/dns/libdns.@A@
+BIND9DEPLIBS = ../../lib/bind9/libbind9.@A@
+ISCDEPLIBS = ../../lib/isc/libisc.@A@
+ISCCFGDEPLIBS = ../../lib/isccfg/libisccfg.@A@
+IRSDEPLIBS = ../../lib/irs/libirs.@A@
+
+DEPLIBS = ${DNSDEPLIBS} ${IRSDEPLIBS} ${BIND9DEPLIBS} \
+ ${ISCDEPLIBS} ${ISCCFGDEPLIBS}
+
+LIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} \
+ ${ISCCFGLIBS} ${ISCLIBS} ${GSSAPI_LIBS} \
+ @LIBS@
+
+NOSYMLIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} \
+ ${ISCCFGLIBS} ${ISCNOSYMLIBS} @LIBS@
+
+SUBDIRS =
+
+TARGETS = nsupdate@EXEEXT@
+
+OBJS = nsupdate.@O@
+
+UOBJS =
+
+SRCS = nsupdate.c
+
+@BIND9_MAKE_RULES@
+
+nsupdate.@O@: nsupdate.c
+ ${LIBTOOL_MODE_COMPILE} ${CC} ${ALL_CFLAGS} \
+ -DSESSION_KEYFILE=\"${localstatedir}/run/named/session.key\" \
+ -c ${srcdir}/nsupdate.c
+
+nsupdate@EXEEXT@: nsupdate.@O@ ${UOBJS} ${DEPLIBS}
+ export BASEOBJS="nsupdate.@O@ ${READLINE_LIB} ${UOBJS}"; \
+ export LIBS0="${DNSLIBS} ${IRSLIBS}"; \
+ ${FINALBUILDCMD}
+
+clean distclean::
+ rm -f ${TARGETS}
+
+installdirs:
+ $(SHELL) ${top_srcdir}/mkinstalldirs ${DESTDIR}${bindir}
+
+install:: nsupdate@EXEEXT@ installdirs
+ ${LIBTOOL_MODE_INSTALL} ${INSTALL_PROGRAM} nsupdate@EXEEXT@ ${DESTDIR}${bindir}
+
+uninstall::
+ ${LIBTOOL_MODE_UNINSTALL} rm -f ${DESTDIR}${bindir}/nsupdate@EXEEXT@
diff --git a/bin/nsupdate/nsupdate.c b/bin/nsupdate/nsupdate.c
new file mode 100644
index 0000000..6c93a03
--- /dev/null
+++ b/bin/nsupdate/nsupdate.c
@@ -0,0 +1,3491 @@
+/*
+ * 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 <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <isc/app.h>
+#include <isc/base64.h>
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/event.h>
+#include <isc/file.h>
+#include <isc/hash.h>
+#include <isc/lex.h>
+#include <isc/log.h>
+#include <isc/managers.h>
+#include <isc/mem.h>
+#include <isc/nonce.h>
+#include <isc/parseint.h>
+#include <isc/platform.h>
+#include <isc/portset.h>
+#include <isc/print.h>
+#include <isc/random.h>
+#include <isc/region.h>
+#include <isc/sockaddr.h>
+#include <isc/socket.h>
+#include <isc/stdio.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/types.h>
+#include <isc/util.h>
+
+#include <pk11/site.h>
+
+#include <dns/callbacks.h>
+#include <dns/dispatch.h>
+#include <dns/dnssec.h>
+#include <dns/events.h>
+#include <dns/fixedname.h>
+#include <dns/log.h>
+#include <dns/masterdump.h>
+#include <dns/message.h>
+#include <dns/name.h>
+#include <dns/nsec3.h>
+#include <dns/rcode.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdatalist.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/request.h>
+#include <dns/result.h>
+#include <dns/tkey.h>
+#include <dns/tsig.h>
+
+#include <dst/dst.h>
+
+#include <isccfg/namedconf.h>
+
+#include <irs/resconf.h>
+
+#ifdef GSSAPI
+#include <dst/gssapi.h>
+#ifdef WIN32
+#include <gssapi/gssapi.h>
+#include <gssapi/gssapi_krb5.h>
+#include <krb5/krb5.h>
+#else /* ifdef WIN32 */
+#include ISC_PLATFORM_GSSAPIHEADER
+#ifdef ISC_PLATFORM_GSSAPI_KRB5_HEADER
+#include ISC_PLATFORM_GSSAPI_KRB5_HEADER
+#endif /* ifdef ISC_PLATFORM_GSSAPI_KRB5_HEADER */
+#include ISC_PLATFORM_KRB5HEADER
+#endif /* ifdef WIN32 */
+#endif /* ifdef GSSAPI */
+#include <bind9/getaddresses.h>
+
+#if defined(HAVE_READLINE)
+#if defined(HAVE_EDIT_READLINE_READLINE_H)
+#include <edit/readline/readline.h>
+#if defined(HAVE_EDIT_READLINE_HISTORY_H)
+#include <edit/readline/history.h>
+#endif /* if defined(HAVE_EDIT_READLINE_HISTORY_H) */
+#elif defined(HAVE_EDITLINE_READLINE_H)
+#include <editline/readline.h>
+#else /* if defined(HAVE_EDIT_READLINE_READLINE_H) */
+/* Prevent deprecated functions being declared. */
+#define _FUNCTION_DEF 1
+/* Ensure rl_message() gets prototype. */
+#define USE_VARARGS 1
+#define PREFER_STDARG 1
+#include <readline/history.h>
+#include <readline/readline.h>
+#endif /* if defined(HAVE_EDIT_READLINE_READLINE_H) */
+#endif /* if defined(HAVE_READLINE) */
+
+#define MAXCMD (128 * 1024)
+#define MAXWIRE (64 * 1024)
+#define PACKETSIZE ((64 * 1024) - 1)
+#define INITTEXT (2 * 1024)
+#define MAXTEXT (128 * 1024)
+#define FIND_TIMEOUT 5
+#define TTL_MAX 2147483647U /* Maximum signed 32 bit integer. */
+
+#define DNSDEFAULTPORT 53
+
+/* Number of addresses to request from bind9_getaddresses() */
+#define MAX_SERVERADDRS 4
+
+static uint16_t dnsport = DNSDEFAULTPORT;
+
+#ifndef RESOLV_CONF
+#define RESOLV_CONF "/etc/resolv.conf"
+#endif /* ifndef RESOLV_CONF */
+
+static bool debugging = false, ddebugging = false;
+static bool memdebugging = false;
+static bool have_ipv4 = false;
+static bool have_ipv6 = false;
+static bool is_dst_up = false;
+static bool usevc = false;
+static bool usegsstsig = false;
+static bool use_win2k_gsstsig = false;
+static bool tried_other_gsstsig = false;
+static bool local_only = false;
+static isc_nm_t *netmgr = NULL;
+static isc_taskmgr_t *taskmgr = NULL;
+static isc_task_t *global_task = NULL;
+static isc_event_t *global_event = NULL;
+static isc_log_t *glctx = NULL;
+static isc_mem_t *gmctx = NULL;
+static dns_dispatchmgr_t *dispatchmgr = NULL;
+static dns_requestmgr_t *requestmgr = NULL;
+static isc_socketmgr_t *socketmgr = NULL;
+static isc_timermgr_t *timermgr = NULL;
+static dns_dispatch_t *dispatchv4 = NULL;
+static dns_dispatch_t *dispatchv6 = NULL;
+static dns_message_t *updatemsg = NULL;
+static dns_fixedname_t fuserzone;
+static dns_fixedname_t fzname;
+static dns_name_t *userzone = NULL;
+static dns_name_t *zname = NULL;
+static dns_name_t tmpzonename = DNS_NAME_INITEMPTY;
+static dns_name_t restart_master = DNS_NAME_INITEMPTY;
+static dns_tsig_keyring_t *gssring = NULL;
+static dns_tsigkey_t *tsigkey = NULL;
+static dst_key_t *sig0key = NULL;
+static isc_sockaddr_t *servers = NULL;
+static isc_sockaddr_t *master_servers = NULL;
+static bool default_servers = true;
+static int ns_inuse = 0;
+static int master_inuse = 0;
+static int ns_total = 0;
+static int ns_alloc = 0;
+static int master_total = 0;
+static int master_alloc = 0;
+static isc_sockaddr_t *localaddr4 = NULL;
+static isc_sockaddr_t *localaddr6 = NULL;
+static const char *keyfile = NULL;
+static char *keystr = NULL;
+static bool shuttingdown = false;
+static FILE *input;
+static bool interactive = true;
+static bool seenerror = false;
+static const dns_master_style_t *style;
+static int requests = 0;
+static unsigned int logdebuglevel = 0;
+static unsigned int timeout = 300;
+static unsigned int udp_timeout = 3;
+static unsigned int udp_retries = 3;
+static dns_rdataclass_t defaultclass = dns_rdataclass_in;
+static dns_rdataclass_t zoneclass = dns_rdataclass_none;
+static isc_mutex_t answer_lock;
+static dns_message_t *answer = NULL;
+static uint32_t default_ttl = 0;
+static bool default_ttl_set = false;
+static bool checknames = true;
+
+typedef struct nsu_requestinfo {
+ dns_message_t *msg;
+ isc_sockaddr_t *addr;
+} nsu_requestinfo_t;
+
+static void
+sendrequest(isc_sockaddr_t *destaddr, dns_message_t *msg,
+ dns_request_t **request);
+static void
+send_update(dns_name_t *zonename, isc_sockaddr_t *master);
+
+ISC_PLATFORM_NORETURN_PRE static void
+fatal(const char *format, ...)
+ ISC_FORMAT_PRINTF(1, 2) ISC_PLATFORM_NORETURN_POST;
+
+static void
+debug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+static void
+ddebug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+#ifdef GSSAPI
+static dns_fixedname_t fkname;
+static isc_sockaddr_t *kserver = NULL;
+static char *realm = NULL;
+static char servicename[DNS_NAME_FORMATSIZE];
+static dns_name_t *keyname;
+typedef struct nsu_gssinfo {
+ dns_message_t *msg;
+ isc_sockaddr_t *addr;
+ dns_gss_ctx_id_t context;
+} nsu_gssinfo_t;
+
+static void
+failed_gssrequest();
+static void
+start_gssrequest(dns_name_t *master);
+static void
+send_gssrequest(isc_sockaddr_t *destaddr, dns_message_t *msg,
+ dns_request_t **request, dns_gss_ctx_id_t context);
+static void
+recvgss(isc_task_t *task, isc_event_t *event);
+#endif /* GSSAPI */
+
+static void
+error(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+#define STATUS_MORE (uint16_t)0
+#define STATUS_SEND (uint16_t)1
+#define STATUS_QUIT (uint16_t)2
+#define STATUS_SYNTAX (uint16_t)3
+
+static void
+master_from_servers(void) {
+ if (master_servers != NULL && master_servers != servers) {
+ isc_mem_put(gmctx, master_servers,
+ master_alloc * sizeof(isc_sockaddr_t));
+ }
+ master_servers = servers;
+ master_total = ns_total;
+ master_alloc = ns_alloc;
+ master_inuse = ns_inuse;
+}
+
+static dns_rdataclass_t
+getzoneclass(void) {
+ if (zoneclass == dns_rdataclass_none) {
+ zoneclass = defaultclass;
+ }
+ return (zoneclass);
+}
+
+static bool
+setzoneclass(dns_rdataclass_t rdclass) {
+ if (zoneclass == dns_rdataclass_none || rdclass == dns_rdataclass_none)
+ {
+ zoneclass = rdclass;
+ }
+ if (zoneclass != rdclass) {
+ return (false);
+ }
+ return (true);
+}
+
+static void
+fatal(const char *format, ...) {
+ va_list args;
+
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ exit(1);
+}
+
+static void
+error(const char *format, ...) {
+ va_list args;
+
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+}
+
+static void
+debug(const char *format, ...) {
+ va_list args;
+
+ if (debugging) {
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ }
+}
+
+static void
+ddebug(const char *format, ...) {
+ va_list args;
+
+ if (ddebugging) {
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ }
+}
+
+static void
+check_result(isc_result_t result, const char *msg) {
+ if (result != ISC_R_SUCCESS) {
+ fatal("%s: %s", msg, isc_result_totext(result));
+ }
+}
+
+static char *
+nsu_strsep(char **stringp, const char *delim) {
+ char *string = *stringp;
+ *stringp = NULL;
+ char *s;
+ const char *d;
+ char sc, dc;
+
+ if (string == NULL) {
+ return (NULL);
+ }
+
+ for (; *string != '\0'; string++) {
+ sc = *string;
+ for (d = delim; (dc = *d) != '\0'; d++) {
+ if (sc == dc) {
+ break;
+ }
+ }
+ if (dc == 0) {
+ break;
+ }
+ }
+
+ for (s = string; *s != '\0'; s++) {
+ sc = *s;
+ for (d = delim; (dc = *d) != '\0'; d++) {
+ if (sc == dc) {
+ *s++ = '\0';
+ *stringp = s;
+ return (string);
+ }
+ }
+ }
+ return (string);
+}
+
+static void
+reset_system(void) {
+ ddebug("reset_system()");
+ /* If the update message is still around, destroy it */
+ if (updatemsg != NULL) {
+ dns_message_reset(updatemsg, DNS_MESSAGE_INTENTRENDER);
+ } else {
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTRENDER, &updatemsg);
+ }
+ updatemsg->opcode = dns_opcode_update;
+ if (usegsstsig) {
+ if (tsigkey != NULL) {
+ dns_tsigkey_detach(&tsigkey);
+ }
+ if (gssring != NULL) {
+ dns_tsigkeyring_detach(&gssring);
+ }
+ tried_other_gsstsig = false;
+ }
+}
+
+static bool
+parse_hmac(const dns_name_t **hmac, const char *hmacstr, size_t len,
+ uint16_t *digestbitsp) {
+ uint16_t digestbits = 0;
+ isc_result_t result;
+ char buf[20];
+
+ REQUIRE(hmac != NULL && *hmac == NULL);
+ REQUIRE(hmacstr != NULL);
+
+ if (len >= sizeof(buf)) {
+ error("unknown key type '%.*s'", (int)(len), hmacstr);
+ return (false);
+ }
+
+ /* Copy len bytes and NUL terminate. */
+ strlcpy(buf, hmacstr, ISC_MIN(len + 1, sizeof(buf)));
+
+ if (strcasecmp(buf, "hmac-md5") == 0) {
+ *hmac = DNS_TSIG_HMACMD5_NAME;
+ } else if (strncasecmp(buf, "hmac-md5-", 9) == 0) {
+ *hmac = DNS_TSIG_HMACMD5_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[9], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 128) {
+ error("digest-bits out of range [0..128]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else if (strcasecmp(buf, "hmac-sha1") == 0) {
+ *hmac = DNS_TSIG_HMACSHA1_NAME;
+ } else if (strncasecmp(buf, "hmac-sha1-", 10) == 0) {
+ *hmac = DNS_TSIG_HMACSHA1_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[10], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 160) {
+ error("digest-bits out of range [0..160]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else if (strcasecmp(buf, "hmac-sha224") == 0) {
+ *hmac = DNS_TSIG_HMACSHA224_NAME;
+ } else if (strncasecmp(buf, "hmac-sha224-", 12) == 0) {
+ *hmac = DNS_TSIG_HMACSHA224_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[12], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 224) {
+ error("digest-bits out of range [0..224]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else if (strcasecmp(buf, "hmac-sha256") == 0) {
+ *hmac = DNS_TSIG_HMACSHA256_NAME;
+ } else if (strncasecmp(buf, "hmac-sha256-", 12) == 0) {
+ *hmac = DNS_TSIG_HMACSHA256_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[12], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 256) {
+ error("digest-bits out of range [0..256]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else if (strcasecmp(buf, "hmac-sha384") == 0) {
+ *hmac = DNS_TSIG_HMACSHA384_NAME;
+ } else if (strncasecmp(buf, "hmac-sha384-", 12) == 0) {
+ *hmac = DNS_TSIG_HMACSHA384_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[12], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 384) {
+ error("digest-bits out of range [0..384]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else if (strcasecmp(buf, "hmac-sha512") == 0) {
+ *hmac = DNS_TSIG_HMACSHA512_NAME;
+ } else if (strncasecmp(buf, "hmac-sha512-", 12) == 0) {
+ *hmac = DNS_TSIG_HMACSHA512_NAME;
+ result = isc_parse_uint16(&digestbits, &buf[12], 10);
+ if (result != ISC_R_SUCCESS || digestbits > 512) {
+ error("digest-bits out of range [0..512]");
+ return (false);
+ }
+ *digestbitsp = (digestbits + 7) & ~0x7U;
+ } else {
+ error("unknown key type '%s'", buf);
+ return (false);
+ }
+ return (true);
+}
+
+static int
+basenamelen(const char *file) {
+ int len = strlen(file);
+
+ if (len > 1 && file[len - 1] == '.') {
+ len -= 1;
+ } else if (len > 8 && strcmp(file + len - 8, ".private") == 0) {
+ len -= 8;
+ } else if (len > 4 && strcmp(file + len - 4, ".key") == 0) {
+ len -= 4;
+ }
+ return (len);
+}
+
+static void
+setup_keystr(void) {
+ unsigned char *secret = NULL;
+ int secretlen;
+ isc_buffer_t secretbuf;
+ isc_result_t result;
+ isc_buffer_t keynamesrc;
+ char *secretstr;
+ char *s, *n;
+ dns_fixedname_t fkeyname;
+ dns_name_t *mykeyname;
+ char *name;
+ const dns_name_t *hmacname = NULL;
+ uint16_t digestbits = 0;
+
+ mykeyname = dns_fixedname_initname(&fkeyname);
+
+ debug("Creating key...");
+
+ s = strchr(keystr, ':');
+ if (s == NULL || s == keystr || s[1] == 0) {
+ fatal("key option must specify [hmac:]keyname:secret");
+ }
+ secretstr = s + 1;
+ n = strchr(secretstr, ':');
+ if (n != NULL) {
+ if (n == secretstr || n[1] == 0) {
+ fatal("key option must specify [hmac:]keyname:secret");
+ }
+ name = secretstr;
+ secretstr = n + 1;
+ if (!parse_hmac(&hmacname, keystr, s - keystr, &digestbits)) {
+ exit(1);
+ }
+ } else {
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ name = keystr;
+ n = s;
+ }
+
+ isc_buffer_init(&keynamesrc, name, (unsigned int)(n - name));
+ isc_buffer_add(&keynamesrc, (unsigned int)(n - name));
+
+ debug("namefromtext");
+ result = dns_name_fromtext(mykeyname, &keynamesrc, dns_rootname, 0,
+ NULL);
+ check_result(result, "dns_name_fromtext");
+
+ secretlen = strlen(secretstr) * 3 / 4;
+ secret = isc_mem_allocate(gmctx, secretlen);
+
+ isc_buffer_init(&secretbuf, secret, secretlen);
+ result = isc_base64_decodestring(secretstr, &secretbuf);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not create key from %s: %s\n", keystr,
+ isc_result_totext(result));
+ goto failure;
+ }
+
+ secretlen = isc_buffer_usedlength(&secretbuf);
+
+ debug("keycreate");
+ result = dns_tsigkey_create(mykeyname, hmacname, secret, secretlen,
+ false, NULL, 0, 0, gmctx, NULL, &tsigkey);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not create key from %s: %s\n", keystr,
+ dns_result_totext(result));
+ } else {
+ dst_key_setbits(tsigkey->key, digestbits);
+ }
+failure:
+ if (secret != NULL) {
+ isc_mem_free(gmctx, secret);
+ }
+}
+
+/*
+ * Get a key from a named.conf format keyfile
+ */
+static isc_result_t
+read_sessionkey(isc_mem_t *mctx, isc_log_t *lctx) {
+ cfg_parser_t *pctx = NULL;
+ cfg_obj_t *sessionkey = NULL;
+ const cfg_obj_t *key = NULL;
+ const cfg_obj_t *secretobj = NULL;
+ const cfg_obj_t *algorithmobj = NULL;
+ const char *mykeyname;
+ const char *secretstr;
+ const char *algorithm;
+ isc_result_t result;
+ int len;
+
+ if (!isc_file_exists(keyfile)) {
+ return (ISC_R_FILENOTFOUND);
+ }
+
+ result = cfg_parser_create(mctx, lctx, &pctx);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ result = cfg_parse_file(pctx, keyfile, &cfg_type_sessionkey,
+ &sessionkey);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ result = cfg_map_get(sessionkey, "key", &key);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+
+ (void)cfg_map_get(key, "secret", &secretobj);
+ (void)cfg_map_get(key, "algorithm", &algorithmobj);
+ if (secretobj == NULL || algorithmobj == NULL) {
+ fatal("key must have algorithm and secret");
+ }
+
+ mykeyname = cfg_obj_asstring(cfg_map_getname(key));
+ secretstr = cfg_obj_asstring(secretobj);
+ algorithm = cfg_obj_asstring(algorithmobj);
+
+ len = strlen(algorithm) + strlen(mykeyname) + strlen(secretstr) + 3;
+ keystr = isc_mem_allocate(mctx, len);
+ snprintf(keystr, len, "%s:%s:%s", algorithm, mykeyname, secretstr);
+ setup_keystr();
+
+cleanup:
+ if (pctx != NULL) {
+ if (sessionkey != NULL) {
+ cfg_obj_destroy(pctx, &sessionkey);
+ }
+ cfg_parser_destroy(&pctx);
+ }
+
+ if (keystr != NULL) {
+ isc_mem_free(mctx, keystr);
+ }
+
+ return (result);
+}
+
+static void
+setup_keyfile(isc_mem_t *mctx, isc_log_t *lctx) {
+ dst_key_t *dstkey = NULL;
+ isc_result_t result;
+ const dns_name_t *hmacname = NULL;
+
+ debug("Creating key...");
+
+ if (sig0key != NULL) {
+ dst_key_free(&sig0key);
+ }
+
+ /* Try reading the key from a K* pair */
+ result = dst_key_fromnamedfile(
+ keyfile, NULL, DST_TYPE_PRIVATE | DST_TYPE_KEY, mctx, &dstkey);
+
+ /* If that didn't work, try reading it as a session.key keyfile */
+ if (result != ISC_R_SUCCESS) {
+ result = read_sessionkey(mctx, lctx);
+ if (result == ISC_R_SUCCESS) {
+ return;
+ }
+ }
+
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr,
+ "could not read key from %.*s.{private,key}: "
+ "%s\n",
+ basenamelen(keyfile), keyfile,
+ isc_result_totext(result));
+ return;
+ }
+
+ switch (dst_key_alg(dstkey)) {
+ case DST_ALG_HMACMD5:
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ break;
+ case DST_ALG_HMACSHA1:
+ hmacname = DNS_TSIG_HMACSHA1_NAME;
+ break;
+ case DST_ALG_HMACSHA224:
+ hmacname = DNS_TSIG_HMACSHA224_NAME;
+ break;
+ case DST_ALG_HMACSHA256:
+ hmacname = DNS_TSIG_HMACSHA256_NAME;
+ break;
+ case DST_ALG_HMACSHA384:
+ hmacname = DNS_TSIG_HMACSHA384_NAME;
+ break;
+ case DST_ALG_HMACSHA512:
+ hmacname = DNS_TSIG_HMACSHA512_NAME;
+ break;
+ }
+ if (hmacname != NULL) {
+ result = dns_tsigkey_createfromkey(
+ dst_key_name(dstkey), hmacname, dstkey, false, NULL, 0,
+ 0, mctx, NULL, &tsigkey);
+ dst_key_free(&dstkey);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not create key from %s: %s\n",
+ keyfile, isc_result_totext(result));
+ return;
+ }
+ } else {
+ dst_key_attach(dstkey, &sig0key);
+ dst_key_free(&dstkey);
+ }
+}
+
+static void
+doshutdown(void) {
+ isc_task_detach(&global_task);
+
+ /*
+ * The isc_mem_put of master_servers must be before the
+ * isc_mem_put of servers as it sets the servers pointer
+ * to NULL.
+ */
+ if (master_servers != NULL && master_servers != servers) {
+ isc_mem_put(gmctx, master_servers,
+ master_alloc * sizeof(isc_sockaddr_t));
+ }
+
+ if (servers != NULL) {
+ isc_mem_put(gmctx, servers, ns_alloc * sizeof(isc_sockaddr_t));
+ }
+
+ if (localaddr4 != NULL) {
+ isc_mem_put(gmctx, localaddr4, sizeof(isc_sockaddr_t));
+ }
+
+ if (localaddr6 != NULL) {
+ isc_mem_put(gmctx, localaddr6, sizeof(isc_sockaddr_t));
+ }
+
+ if (tsigkey != NULL) {
+ ddebug("Freeing TSIG key");
+ dns_tsigkey_detach(&tsigkey);
+ }
+
+ if (sig0key != NULL) {
+ ddebug("Freeing SIG(0) key");
+ dst_key_free(&sig0key);
+ }
+
+ if (updatemsg != NULL) {
+ dns_message_detach(&updatemsg);
+ }
+
+ if (is_dst_up) {
+ ddebug("Destroy DST lib");
+ dst_lib_destroy();
+ is_dst_up = false;
+ }
+
+ ddebug("Destroying request manager");
+ dns_requestmgr_detach(&requestmgr);
+
+ ddebug("Freeing the dispatchers");
+ if (have_ipv4) {
+ dns_dispatch_detach(&dispatchv4);
+ }
+ if (have_ipv6) {
+ dns_dispatch_detach(&dispatchv6);
+ }
+
+ ddebug("Shutting down dispatch manager");
+ dns_dispatchmgr_destroy(&dispatchmgr);
+}
+
+static void
+maybeshutdown(void) {
+ /* when called from getinput, doshutdown might be already finished */
+ if (requestmgr == NULL) {
+ return;
+ }
+
+ ddebug("Shutting down request manager");
+ dns_requestmgr_shutdown(requestmgr);
+
+ if (requests != 0) {
+ return;
+ }
+
+ doshutdown();
+}
+
+static void
+shutdown_program(isc_task_t *task, isc_event_t *event) {
+ REQUIRE(task == global_task);
+ UNUSED(task);
+
+ ddebug("shutdown_program()");
+ isc_event_free(&event);
+
+ shuttingdown = true;
+ maybeshutdown();
+}
+
+/*
+ * Try honoring the operating system's preferred ephemeral port range.
+ */
+static void
+set_source_ports(dns_dispatchmgr_t *manager) {
+ isc_portset_t *v4portset = NULL, *v6portset = NULL;
+ in_port_t udpport_low, udpport_high;
+ isc_result_t result;
+
+ result = isc_portset_create(gmctx, &v4portset);
+ check_result(result, "isc_portset_create (v4)");
+ result = isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
+ check_result(result, "isc_net_getudpportrange (v4)");
+ isc_portset_addrange(v4portset, udpport_low, udpport_high);
+
+ result = isc_portset_create(gmctx, &v6portset);
+ check_result(result, "isc_portset_create (v6)");
+ result = isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
+ check_result(result, "isc_net_getudpportrange (v6)");
+ isc_portset_addrange(v6portset, udpport_low, udpport_high);
+
+ result = dns_dispatchmgr_setavailports(manager, v4portset, v6portset);
+ check_result(result, "dns_dispatchmgr_setavailports");
+
+ isc_portset_destroy(gmctx, &v4portset);
+ isc_portset_destroy(gmctx, &v6portset);
+}
+
+static void
+setup_system(void) {
+ isc_result_t result;
+ isc_sockaddr_t bind_any, bind_any6;
+ unsigned int attrs, attrmask;
+ isc_sockaddrlist_t *nslist;
+ isc_logconfig_t *logconfig = NULL;
+ irs_resconf_t *resconf = NULL;
+
+ ddebug("setup_system()");
+
+ dns_result_register();
+
+ isc_log_create(gmctx, &glctx, &logconfig);
+ isc_log_setcontext(glctx);
+ dns_log_init(glctx);
+ dns_log_setcontext(glctx);
+
+ result = isc_log_usechannel(logconfig, "default_debug", NULL, NULL);
+ check_result(result, "isc_log_usechannel");
+
+ isc_log_setdebuglevel(glctx, logdebuglevel);
+
+ result = irs_resconf_load(gmctx, RESOLV_CONF, &resconf);
+ if (result != ISC_R_SUCCESS && result != ISC_R_FILENOTFOUND) {
+ fatal("parse of %s failed", RESOLV_CONF);
+ }
+
+ nslist = irs_resconf_getnameservers(resconf);
+
+ if (servers != NULL) {
+ if (master_servers == servers) {
+ master_servers = NULL;
+ }
+ isc_mem_put(gmctx, servers, ns_alloc * sizeof(isc_sockaddr_t));
+ }
+
+ ns_inuse = 0;
+ if (local_only || ISC_LIST_EMPTY(*nslist)) {
+ struct in_addr in;
+ struct in6_addr in6;
+
+ if (local_only && keyfile == NULL) {
+ keyfile = SESSION_KEYFILE;
+ }
+
+ default_servers = !local_only;
+
+ ns_total = ns_alloc = (have_ipv4 ? 1 : 0) + (have_ipv6 ? 1 : 0);
+ servers = isc_mem_get(gmctx, ns_alloc * sizeof(isc_sockaddr_t));
+
+ if (have_ipv6) {
+ memset(&in6, 0, sizeof(in6));
+ in6.s6_addr[15] = 1;
+ isc_sockaddr_fromin6(&servers[0], &in6, dnsport);
+ }
+ if (have_ipv4) {
+ in.s_addr = htonl(INADDR_LOOPBACK);
+ isc_sockaddr_fromin(&servers[(have_ipv6 ? 1 : 0)], &in,
+ dnsport);
+ }
+ } else {
+ isc_sockaddr_t *sa;
+ int i;
+
+ /*
+ * Count the nameservers (skipping any that we can't use
+ * because of address family restrictions) and allocate
+ * the servers array.
+ */
+ ns_total = 0;
+ for (sa = ISC_LIST_HEAD(*nslist); sa != NULL;
+ sa = ISC_LIST_NEXT(sa, link))
+ {
+ switch (sa->type.sa.sa_family) {
+ case AF_INET:
+ if (have_ipv4) {
+ ns_total++;
+ }
+ break;
+ case AF_INET6:
+ if (have_ipv6) {
+ ns_total++;
+ }
+ break;
+ default:
+ fatal("bad family");
+ }
+ }
+
+ ns_alloc = ns_total;
+ servers = isc_mem_get(gmctx, ns_alloc * sizeof(isc_sockaddr_t));
+
+ i = 0;
+ for (sa = ISC_LIST_HEAD(*nslist); sa != NULL;
+ sa = ISC_LIST_NEXT(sa, link))
+ {
+ switch (sa->type.sa.sa_family) {
+ case AF_INET:
+ if (have_ipv4) {
+ sa->type.sin.sin_port = htons(dnsport);
+ } else {
+ continue;
+ }
+ break;
+ case AF_INET6:
+ if (have_ipv6) {
+ sa->type.sin6.sin6_port =
+ htons(dnsport);
+ } else {
+ continue;
+ }
+ break;
+ default:
+ fatal("bad family");
+ }
+ INSIST(i < ns_alloc);
+ servers[i++] = *sa;
+ }
+ }
+
+ irs_resconf_destroy(&resconf);
+
+ result = dns_dispatchmgr_create(gmctx, &dispatchmgr);
+ check_result(result, "dns_dispatchmgr_create");
+
+ result = isc_socketmgr_create(gmctx, &socketmgr);
+ check_result(result, "dns_socketmgr_create");
+
+ result = isc_timermgr_create(gmctx, &timermgr);
+ check_result(result, "dns_timermgr_create");
+
+ result = isc_managers_create(gmctx, 1, 0, &netmgr, &taskmgr);
+ check_result(result, "isc_managers_create");
+
+ result = isc_task_create(taskmgr, 0, &global_task);
+ check_result(result, "isc_task_create");
+
+ result = isc_task_onshutdown(global_task, shutdown_program, NULL);
+ check_result(result, "isc_task_onshutdown");
+
+ result = dst_lib_init(gmctx, NULL);
+ check_result(result, "dst_lib_init");
+ is_dst_up = true;
+
+ set_source_ports(dispatchmgr);
+
+ attrmask = DNS_DISPATCHATTR_UDP | DNS_DISPATCHATTR_TCP;
+ attrmask |= DNS_DISPATCHATTR_IPV4 | DNS_DISPATCHATTR_IPV6;
+
+ if (have_ipv6) {
+ attrs = DNS_DISPATCHATTR_UDP;
+ attrs |= DNS_DISPATCHATTR_MAKEQUERY;
+ attrs |= DNS_DISPATCHATTR_IPV6;
+ isc_sockaddr_any6(&bind_any6);
+ result = dns_dispatch_getudp(dispatchmgr, socketmgr, taskmgr,
+ &bind_any6, PACKETSIZE, 4, 2, 3, 5,
+ attrs, attrmask, &dispatchv6);
+ check_result(result, "dns_dispatch_getudp (v6)");
+ }
+
+ if (have_ipv4) {
+ attrs = DNS_DISPATCHATTR_UDP;
+ attrs |= DNS_DISPATCHATTR_MAKEQUERY;
+ attrs |= DNS_DISPATCHATTR_IPV4;
+ isc_sockaddr_any(&bind_any);
+ result = dns_dispatch_getudp(dispatchmgr, socketmgr, taskmgr,
+ &bind_any, PACKETSIZE, 4, 2, 3, 5,
+ attrs, attrmask, &dispatchv4);
+ check_result(result, "dns_dispatch_getudp (v4)");
+ }
+
+ result = dns_requestmgr_create(gmctx, timermgr, socketmgr, taskmgr,
+ dispatchmgr, dispatchv4, dispatchv6,
+ &requestmgr);
+ check_result(result, "dns_requestmgr_create");
+
+ if (keystr != NULL) {
+ setup_keystr();
+ } else if (local_only) {
+ result = read_sessionkey(gmctx, glctx);
+ if (result != ISC_R_SUCCESS) {
+ fatal("can't read key from %s: %s\n", keyfile,
+ isc_result_totext(result));
+ }
+ } else if (keyfile != NULL) {
+ setup_keyfile(gmctx, glctx);
+ }
+
+ isc_mutex_init(&answer_lock);
+}
+
+static int
+get_addresses(char *host, in_port_t port, isc_sockaddr_t *sockaddr,
+ int naddrs) {
+ int count = 0;
+ isc_result_t result;
+
+ isc_app_block();
+ result = bind9_getaddresses(host, port, sockaddr, naddrs, &count);
+ isc_app_unblock();
+ if (result != ISC_R_SUCCESS) {
+ error("couldn't get address for '%s': %s", host,
+ isc_result_totext(result));
+ }
+ return (count);
+}
+
+static void
+version(void) {
+ fputs("nsupdate " VERSION "\n", stderr);
+}
+
+#define PARSE_ARGS_FMT "46dDML:y:ghilovk:p:Pr:R::t:Tu:V"
+
+static void
+pre_parse_args(int argc, char **argv) {
+ dns_rdatatype_t t;
+ int ch;
+ char buf[100];
+ bool doexit = false;
+ bool ipv4only = false, ipv6only = false;
+
+ while ((ch = isc_commandline_parse(argc, argv, PARSE_ARGS_FMT)) != -1) {
+ switch (ch) {
+ case 'M': /* was -dm */
+ debugging = true;
+ ddebugging = true;
+ memdebugging = true;
+ isc_mem_debugging = ISC_MEM_DEBUGTRACE |
+ ISC_MEM_DEBUGRECORD;
+ break;
+
+ case '4':
+ if (ipv6only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv4only = true;
+ break;
+
+ case '6':
+ if (ipv4only) {
+ fatal("only one of -4 and -6 allowed");
+ }
+ ipv6only = true;
+ break;
+
+ case '?':
+ case 'h':
+ if (isc_commandline_option != '?') {
+ fprintf(stderr, "%s: invalid argument -%c\n",
+ argv[0], isc_commandline_option);
+ }
+ fprintf(stderr, "usage: nsupdate [-dDi] [-L level] [-l]"
+ "[-g | -o | -y keyname:secret | -k "
+ "keyfile] "
+ "[-v] [-V] [-P] [-T] [-4 | -6] "
+ "[filename]\n");
+ exit(1);
+
+ case 'P':
+ for (t = 0xff00; t <= 0xfffe; t++) {
+ if (dns_rdatatype_ismeta(t)) {
+ continue;
+ }
+ dns_rdatatype_format(t, buf, sizeof(buf));
+ if (strncmp(buf, "TYPE", 4) != 0) {
+ fprintf(stdout, "%s\n", buf);
+ }
+ }
+ doexit = true;
+ break;
+
+ case 'T':
+ for (t = 1; t <= 0xfeff; t++) {
+ if (dns_rdatatype_ismeta(t)) {
+ continue;
+ }
+ dns_rdatatype_format(t, buf, sizeof(buf));
+ if (strncmp(buf, "TYPE", 4) != 0) {
+ fprintf(stdout, "%s\n", buf);
+ }
+ }
+ doexit = true;
+ break;
+
+ case 'V':
+ version();
+ doexit = true;
+ break;
+
+ default:
+ break;
+ }
+ }
+ if (doexit) {
+ exit(0);
+ }
+ isc_commandline_reset = true;
+ isc_commandline_index = 1;
+}
+
+static void
+parse_args(int argc, char **argv) {
+ int ch;
+ uint32_t i;
+ isc_result_t result;
+ bool force_interactive = false;
+
+ debug("parse_args");
+ while ((ch = isc_commandline_parse(argc, argv, PARSE_ARGS_FMT)) != -1) {
+ switch (ch) {
+ case '4':
+ if (have_ipv4) {
+ isc_net_disableipv6();
+ have_ipv6 = false;
+ } else {
+ fatal("can't find IPv4 networking");
+ }
+ break;
+ case '6':
+ if (have_ipv6) {
+ isc_net_disableipv4();
+ have_ipv4 = false;
+ } else {
+ fatal("can't find IPv6 networking");
+ }
+ break;
+ case 'd':
+ debugging = true;
+ break;
+ case 'D': /* was -dd */
+ debugging = true;
+ ddebugging = true;
+ break;
+ case 'M':
+ break;
+ case 'i':
+ force_interactive = true;
+ interactive = true;
+ break;
+ case 'l':
+ local_only = true;
+ break;
+ case 'L':
+ result = isc_parse_uint32(&i, isc_commandline_argument,
+ 10);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr,
+ "bad library debug value "
+ "'%s'\n",
+ isc_commandline_argument);
+ exit(1);
+ }
+ logdebuglevel = i;
+ break;
+ case 'y':
+ keystr = isc_commandline_argument;
+ break;
+ case 'v':
+ usevc = true;
+ break;
+ case 'k':
+ keyfile = isc_commandline_argument;
+ break;
+ case 'g':
+ usegsstsig = true;
+ use_win2k_gsstsig = false;
+ break;
+ case 'o':
+ usegsstsig = true;
+ use_win2k_gsstsig = true;
+ break;
+ case 'p':
+ result = isc_parse_uint16(&dnsport,
+ isc_commandline_argument, 10);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr,
+ "bad port number "
+ "'%s'\n",
+ isc_commandline_argument);
+ exit(1);
+ }
+ break;
+ case 't':
+ result = isc_parse_uint32(&timeout,
+ isc_commandline_argument, 10);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "bad timeout '%s'\n",
+ isc_commandline_argument);
+ exit(1);
+ }
+ if (timeout == 0) {
+ timeout = UINT_MAX;
+ }
+ break;
+ case 'u':
+ result = isc_parse_uint32(&udp_timeout,
+ isc_commandline_argument, 10);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "bad udp timeout '%s'\n",
+ isc_commandline_argument);
+ exit(1);
+ }
+ if (udp_timeout == 0) {
+ udp_timeout = UINT_MAX;
+ }
+ break;
+ case 'r':
+ result = isc_parse_uint32(&udp_retries,
+ isc_commandline_argument, 10);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "bad udp retries '%s'\n",
+ isc_commandline_argument);
+ exit(1);
+ }
+ break;
+
+ case 'R':
+ fatal("The -R options has been deprecated.\n");
+ break;
+
+ default:
+ fprintf(stderr, "%s: unhandled option: %c\n", argv[0],
+ isc_commandline_option);
+ exit(1);
+ }
+ }
+ if (keyfile != NULL && keystr != NULL) {
+ fprintf(stderr, "%s: cannot specify both -k and -y\n", argv[0]);
+ exit(1);
+ }
+
+#ifdef GSSAPI
+ if (usegsstsig && (keyfile != NULL || keystr != NULL)) {
+ fprintf(stderr, "%s: cannot specify -g with -k or -y\n",
+ argv[0]);
+ exit(1);
+ }
+#else /* ifdef GSSAPI */
+ if (usegsstsig) {
+ fprintf(stderr,
+ "%s: cannot specify -g or -o, "
+ "program not linked with GSS API Library\n",
+ argv[0]);
+ exit(1);
+ }
+#endif /* ifdef GSSAPI */
+
+ if (argv[isc_commandline_index] != NULL) {
+ if (strcmp(argv[isc_commandline_index], "-") == 0) {
+ input = stdin;
+ } else {
+ result = isc_stdio_open(argv[isc_commandline_index],
+ "r", &input);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not open '%s': %s\n",
+ argv[isc_commandline_index],
+ isc_result_totext(result));
+ exit(1);
+ }
+ }
+ if (!force_interactive) {
+ interactive = false;
+ }
+ }
+}
+
+static uint16_t
+parse_name(char **cmdlinep, dns_message_t *msg, dns_name_t **namep) {
+ isc_result_t result;
+ char *word;
+ isc_buffer_t source;
+
+ word = nsu_strsep(cmdlinep, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read owner name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ result = dns_message_gettempname(msg, namep);
+ check_result(result, "dns_message_gettempname");
+ isc_buffer_init(&source, word, strlen(word));
+ isc_buffer_add(&source, strlen(word));
+ result = dns_name_fromtext(*namep, &source, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ error("invalid owner name: %s", isc_result_totext(result));
+ isc_buffer_invalidate(&source);
+ dns_message_puttempname(msg, namep);
+ return (STATUS_SYNTAX);
+ }
+ isc_buffer_invalidate(&source);
+ return (STATUS_MORE);
+}
+
+static uint16_t
+parse_rdata(char **cmdlinep, dns_rdataclass_t rdataclass,
+ dns_rdatatype_t rdatatype, dns_message_t *msg, dns_rdata_t *rdata) {
+ char *cmdline = *cmdlinep;
+ isc_buffer_t source, *buf = NULL, *newbuf = NULL;
+ isc_region_t r;
+ isc_lex_t *lex = NULL;
+ dns_rdatacallbacks_t callbacks;
+ isc_result_t result;
+
+ if (cmdline == NULL) {
+ rdata->flags = DNS_RDATA_UPDATE;
+ return (STATUS_MORE);
+ }
+
+ while (*cmdline != 0 && isspace((unsigned char)*cmdline)) {
+ cmdline++;
+ }
+
+ if (*cmdline != 0) {
+ dns_rdatacallbacks_init(&callbacks);
+ result = isc_lex_create(gmctx, strlen(cmdline), &lex);
+ check_result(result, "isc_lex_create");
+ isc_buffer_init(&source, cmdline, strlen(cmdline));
+ isc_buffer_add(&source, strlen(cmdline));
+ result = isc_lex_openbuffer(lex, &source);
+ check_result(result, "isc_lex_openbuffer");
+ isc_buffer_allocate(gmctx, &buf, MAXWIRE);
+ result = dns_rdata_fromtext(NULL, rdataclass, rdatatype, lex,
+ dns_rootname, 0, gmctx, buf,
+ &callbacks);
+ isc_lex_destroy(&lex);
+ if (result == ISC_R_SUCCESS) {
+ isc_buffer_usedregion(buf, &r);
+ isc_buffer_allocate(gmctx, &newbuf, r.length);
+ isc_buffer_putmem(newbuf, r.base, r.length);
+ isc_buffer_usedregion(newbuf, &r);
+ dns_rdata_fromregion(rdata, rdataclass, rdatatype, &r);
+ isc_buffer_free(&buf);
+ dns_message_takebuffer(msg, &newbuf);
+ } else {
+ fprintf(stderr, "invalid rdata format: %s\n",
+ isc_result_totext(result));
+ isc_buffer_free(&buf);
+ return (STATUS_SYNTAX);
+ }
+ } else {
+ rdata->flags = DNS_RDATA_UPDATE;
+ }
+ *cmdlinep = cmdline;
+ return (STATUS_MORE);
+}
+
+static uint16_t
+make_prereq(char *cmdline, bool ispositive, bool isrrset) {
+ isc_result_t result;
+ char *word;
+ dns_name_t *name = NULL;
+ isc_textregion_t region;
+ dns_rdataset_t *rdataset = NULL;
+ dns_rdatalist_t *rdatalist = NULL;
+ dns_rdataclass_t rdataclass;
+ dns_rdatatype_t rdatatype;
+ dns_rdata_t *rdata = NULL;
+ uint16_t retval;
+
+ ddebug("make_prereq()");
+
+ /*
+ * Read the owner name
+ */
+ retval = parse_name(&cmdline, updatemsg, &name);
+ if (retval != STATUS_MORE) {
+ return (retval);
+ }
+
+ /*
+ * If this is an rrset prereq, read the class or type.
+ */
+ if (isrrset) {
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read class or type\n");
+ goto failure;
+ }
+ region.base = word;
+ region.length = strlen(word);
+ result = dns_rdataclass_fromtext(&rdataclass, &region);
+ if (result == ISC_R_SUCCESS) {
+ if (!setzoneclass(rdataclass)) {
+ fprintf(stderr, "class mismatch: %s\n", word);
+ goto failure;
+ }
+ /*
+ * Now read the type.
+ */
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read type\n");
+ goto failure;
+ }
+ region.base = word;
+ region.length = strlen(word);
+ result = dns_rdatatype_fromtext(&rdatatype, &region);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "invalid type: %s\n", word);
+ goto failure;
+ }
+ } else {
+ rdataclass = getzoneclass();
+ result = dns_rdatatype_fromtext(&rdatatype, &region);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "invalid type: %s\n", word);
+ goto failure;
+ }
+ }
+ } else {
+ rdatatype = dns_rdatatype_any;
+ }
+
+ result = dns_message_gettemprdata(updatemsg, &rdata);
+ check_result(result, "dns_message_gettemprdata");
+
+ dns_rdata_init(rdata);
+
+ if (isrrset && ispositive) {
+ retval = parse_rdata(&cmdline, rdataclass, rdatatype, updatemsg,
+ rdata);
+ if (retval != STATUS_MORE) {
+ goto failure;
+ }
+ } else {
+ rdata->flags = DNS_RDATA_UPDATE;
+ }
+
+ result = dns_message_gettemprdatalist(updatemsg, &rdatalist);
+ check_result(result, "dns_message_gettemprdatalist");
+ result = dns_message_gettemprdataset(updatemsg, &rdataset);
+ check_result(result, "dns_message_gettemprdataset");
+ rdatalist->type = rdatatype;
+ if (ispositive) {
+ if (isrrset && rdata->data != NULL) {
+ rdatalist->rdclass = rdataclass;
+ } else {
+ rdatalist->rdclass = dns_rdataclass_any;
+ }
+ } else {
+ rdatalist->rdclass = dns_rdataclass_none;
+ }
+ rdata->rdclass = rdatalist->rdclass;
+ rdata->type = rdatatype;
+ ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
+ dns_rdatalist_tordataset(rdatalist, rdataset);
+ ISC_LIST_INIT(name->list);
+ ISC_LIST_APPEND(name->list, rdataset, link);
+ dns_message_addname(updatemsg, name, DNS_SECTION_PREREQUISITE);
+ return (STATUS_MORE);
+
+failure:
+ if (name != NULL) {
+ dns_message_puttempname(updatemsg, &name);
+ }
+ return (STATUS_SYNTAX);
+}
+
+static uint16_t
+evaluate_prereq(char *cmdline) {
+ char *word;
+ bool ispositive, isrrset;
+
+ ddebug("evaluate_prereq()");
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read operation code\n");
+ return (STATUS_SYNTAX);
+ }
+ if (strcasecmp(word, "nxdomain") == 0) {
+ ispositive = false;
+ isrrset = false;
+ } else if (strcasecmp(word, "yxdomain") == 0) {
+ ispositive = true;
+ isrrset = false;
+ } else if (strcasecmp(word, "nxrrset") == 0) {
+ ispositive = false;
+ isrrset = true;
+ } else if (strcasecmp(word, "yxrrset") == 0) {
+ ispositive = true;
+ isrrset = true;
+ } else {
+ fprintf(stderr, "incorrect operation code: %s\n", word);
+ return (STATUS_SYNTAX);
+ }
+ return (make_prereq(cmdline, ispositive, isrrset));
+}
+
+static uint16_t
+evaluate_server(char *cmdline) {
+ char *word, *server;
+ long port;
+
+ if (local_only) {
+ fprintf(stderr, "cannot reset server in localhost-only mode\n");
+ return (STATUS_SYNTAX);
+ }
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read server name\n");
+ return (STATUS_SYNTAX);
+ }
+ server = word;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ port = dnsport;
+ } else {
+ char *endp;
+ port = strtol(word, &endp, 10);
+ if (*endp != 0) {
+ fprintf(stderr, "port '%s' is not numeric\n", word);
+ return (STATUS_SYNTAX);
+ } else if (port < 1 || port > 65535) {
+ fprintf(stderr,
+ "port '%s' is out of range "
+ "(1 to 65535)\n",
+ word);
+ return (STATUS_SYNTAX);
+ }
+ }
+
+ if (servers != NULL) {
+ if (master_servers == servers) {
+ master_servers = NULL;
+ }
+ isc_mem_put(gmctx, servers, ns_alloc * sizeof(isc_sockaddr_t));
+ }
+
+ default_servers = false;
+
+ ns_alloc = MAX_SERVERADDRS;
+ ns_inuse = 0;
+ servers = isc_mem_get(gmctx, ns_alloc * sizeof(isc_sockaddr_t));
+
+ memset(servers, 0, ns_alloc * sizeof(isc_sockaddr_t));
+ ns_total = get_addresses(server, (in_port_t)port, servers, ns_alloc);
+ if (ns_total == 0) {
+ return (STATUS_SYNTAX);
+ }
+
+ return (STATUS_MORE);
+}
+
+static uint16_t
+evaluate_local(char *cmdline) {
+ char *word, *local;
+ long port;
+ struct in_addr in4;
+ struct in6_addr in6;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read server name\n");
+ return (STATUS_SYNTAX);
+ }
+ local = word;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ port = 0;
+ } else {
+ char *endp;
+ port = strtol(word, &endp, 10);
+ if (*endp != 0) {
+ fprintf(stderr, "port '%s' is not numeric\n", word);
+ return (STATUS_SYNTAX);
+ } else if (port < 1 || port > 65535) {
+ fprintf(stderr,
+ "port '%s' is out of range "
+ "(1 to 65535)\n",
+ word);
+ return (STATUS_SYNTAX);
+ }
+ }
+
+ if (have_ipv6 && inet_pton(AF_INET6, local, &in6) == 1) {
+ if (localaddr6 == NULL) {
+ localaddr6 = isc_mem_get(gmctx, sizeof(isc_sockaddr_t));
+ }
+ isc_sockaddr_fromin6(localaddr6, &in6, (in_port_t)port);
+ } else if (have_ipv4 && inet_pton(AF_INET, local, &in4) == 1) {
+ if (localaddr4 == NULL) {
+ localaddr4 = isc_mem_get(gmctx, sizeof(isc_sockaddr_t));
+ }
+ isc_sockaddr_fromin(localaddr4, &in4, (in_port_t)port);
+ } else {
+ fprintf(stderr, "invalid address %s", local);
+ return (STATUS_SYNTAX);
+ }
+
+ return (STATUS_MORE);
+}
+
+static uint16_t
+evaluate_key(char *cmdline) {
+ char *namestr;
+ char *secretstr;
+ isc_buffer_t b;
+ isc_result_t result;
+ dns_fixedname_t fkeyname;
+ dns_name_t *mykeyname;
+ int secretlen;
+ unsigned char *secret = NULL;
+ isc_buffer_t secretbuf;
+ const dns_name_t *hmacname = NULL;
+ uint16_t digestbits = 0;
+ char *n;
+
+ namestr = nsu_strsep(&cmdline, " \t\r\n");
+ if (namestr == NULL || *namestr == 0) {
+ fprintf(stderr, "could not read key name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ mykeyname = dns_fixedname_initname(&fkeyname);
+
+ n = strchr(namestr, ':');
+ if (n != NULL) {
+ if (!parse_hmac(&hmacname, namestr, n - namestr, &digestbits)) {
+ return (STATUS_SYNTAX);
+ }
+ namestr = n + 1;
+ } else {
+ hmacname = DNS_TSIG_HMACMD5_NAME;
+ }
+
+ isc_buffer_init(&b, namestr, strlen(namestr));
+ isc_buffer_add(&b, strlen(namestr));
+ result = dns_name_fromtext(mykeyname, &b, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not parse key name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ secretstr = nsu_strsep(&cmdline, "\r\n");
+ if (secretstr == NULL || *secretstr == 0) {
+ fprintf(stderr, "could not read key secret\n");
+ return (STATUS_SYNTAX);
+ }
+ secretlen = strlen(secretstr) * 3 / 4;
+ secret = isc_mem_allocate(gmctx, secretlen);
+
+ isc_buffer_init(&secretbuf, secret, secretlen);
+ result = isc_base64_decodestring(secretstr, &secretbuf);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not create key from %s: %s\n", secretstr,
+ isc_result_totext(result));
+ isc_mem_free(gmctx, secret);
+ return (STATUS_SYNTAX);
+ }
+ secretlen = isc_buffer_usedlength(&secretbuf);
+
+ if (tsigkey != NULL) {
+ dns_tsigkey_detach(&tsigkey);
+ }
+ result = dns_tsigkey_create(mykeyname, hmacname, secret, secretlen,
+ false, NULL, 0, 0, gmctx, NULL, &tsigkey);
+ isc_mem_free(gmctx, secret);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not create key from %s %s: %s\n",
+ namestr, secretstr, dns_result_totext(result));
+ return (STATUS_SYNTAX);
+ }
+ dst_key_setbits(tsigkey->key, digestbits);
+ return (STATUS_MORE);
+}
+
+static uint16_t
+evaluate_zone(char *cmdline) {
+ char *word;
+ isc_buffer_t b;
+ isc_result_t result;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read zone name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ userzone = dns_fixedname_initname(&fuserzone);
+ isc_buffer_init(&b, word, strlen(word));
+ isc_buffer_add(&b, strlen(word));
+ result = dns_name_fromtext(userzone, &b, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ userzone = NULL; /* Lest it point to an invalid name */
+ fprintf(stderr, "could not parse zone name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ return (STATUS_MORE);
+}
+
+static uint16_t
+evaluate_realm(char *cmdline) {
+#ifdef GSSAPI
+ char *word;
+ char buf[1024];
+ int n;
+
+ if (realm != NULL) {
+ isc_mem_free(gmctx, realm);
+ realm = NULL;
+ }
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ return (STATUS_MORE);
+ }
+
+ n = snprintf(buf, sizeof(buf), "@%s", word);
+ if (n < 0 || (size_t)n >= sizeof(buf)) {
+ error("realm is too long");
+ return (STATUS_SYNTAX);
+ }
+ realm = isc_mem_strdup(gmctx, buf);
+ return (STATUS_MORE);
+#else /* ifdef GSSAPI */
+ UNUSED(cmdline);
+ return (STATUS_SYNTAX);
+#endif /* ifdef GSSAPI */
+}
+
+static uint16_t
+evaluate_ttl(char *cmdline) {
+ char *word;
+ isc_result_t result;
+ uint32_t ttl;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read ttl\n");
+ return (STATUS_SYNTAX);
+ }
+
+ if (!strcasecmp(word, "none")) {
+ default_ttl = 0;
+ default_ttl_set = false;
+ return (STATUS_MORE);
+ }
+
+ result = isc_parse_uint32(&ttl, word, 10);
+ if (result != ISC_R_SUCCESS) {
+ return (STATUS_SYNTAX);
+ }
+
+ if (ttl > TTL_MAX) {
+ fprintf(stderr, "ttl '%s' is out of range (0 to %u)\n", word,
+ TTL_MAX);
+ return (STATUS_SYNTAX);
+ }
+ default_ttl = ttl;
+ default_ttl_set = true;
+
+ return (STATUS_MORE);
+}
+
+static uint16_t
+evaluate_class(char *cmdline) {
+ char *word;
+ isc_textregion_t r;
+ isc_result_t result;
+ dns_rdataclass_t rdclass;
+
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read class name\n");
+ return (STATUS_SYNTAX);
+ }
+
+ r.base = word;
+ r.length = strlen(word);
+ result = dns_rdataclass_fromtext(&rdclass, &r);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not parse class name: %s\n", word);
+ return (STATUS_SYNTAX);
+ }
+ switch (rdclass) {
+ case dns_rdataclass_none:
+ case dns_rdataclass_any:
+ case dns_rdataclass_reserved0:
+ fprintf(stderr, "bad default class: %s\n", word);
+ return (STATUS_SYNTAX);
+ default:
+ defaultclass = rdclass;
+ }
+
+ return (STATUS_MORE);
+}
+
+static uint16_t
+update_addordelete(char *cmdline, bool isdelete) {
+ isc_result_t result;
+ dns_name_t *name = NULL;
+ uint32_t ttl;
+ char *word;
+ dns_rdataclass_t rdataclass;
+ dns_rdatatype_t rdatatype;
+ dns_rdata_t *rdata = NULL;
+ dns_rdatalist_t *rdatalist = NULL;
+ dns_rdataset_t *rdataset = NULL;
+ isc_textregion_t region;
+ uint16_t retval;
+
+ ddebug("update_addordelete()");
+
+ /*
+ * Read the owner name.
+ */
+ retval = parse_name(&cmdline, updatemsg, &name);
+ if (retval != STATUS_MORE) {
+ return (retval);
+ }
+
+ result = dns_message_gettemprdata(updatemsg, &rdata);
+ check_result(result, "dns_message_gettemprdata");
+
+ dns_rdata_init(rdata);
+
+ /*
+ * If this is an add, read the TTL and verify that it's in range.
+ * If it's a delete, ignore a TTL if present (for compatibility).
+ */
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ if (!isdelete) {
+ fprintf(stderr, "could not read owner ttl\n");
+ goto failure;
+ } else {
+ ttl = 0;
+ rdataclass = dns_rdataclass_any;
+ rdatatype = dns_rdatatype_any;
+ rdata->flags = DNS_RDATA_UPDATE;
+ goto doneparsing;
+ }
+ }
+ result = isc_parse_uint32(&ttl, word, 10);
+ if (result != ISC_R_SUCCESS) {
+ if (isdelete) {
+ ttl = 0;
+ goto parseclass;
+ } else if (default_ttl_set) {
+ ttl = default_ttl;
+ goto parseclass;
+ } else {
+ fprintf(stderr, "ttl '%s': %s\n", word,
+ isc_result_totext(result));
+ goto failure;
+ }
+ }
+
+ if (isdelete) {
+ ttl = 0;
+ } else if (ttl > TTL_MAX) {
+ fprintf(stderr, "ttl '%s' is out of range (0 to %u)\n", word,
+ TTL_MAX);
+ goto failure;
+ }
+
+ /*
+ * Read the class or type.
+ */
+ word = nsu_strsep(&cmdline, " \t\r\n");
+parseclass:
+ if (word == NULL || *word == 0) {
+ if (isdelete) {
+ rdataclass = dns_rdataclass_any;
+ rdatatype = dns_rdatatype_any;
+ rdata->flags = DNS_RDATA_UPDATE;
+ goto doneparsing;
+ } else {
+ fprintf(stderr, "could not read class or type\n");
+ goto failure;
+ }
+ }
+ region.base = word;
+ region.length = strlen(word);
+ rdataclass = dns_rdataclass_any;
+ result = dns_rdataclass_fromtext(&rdataclass, &region);
+ if (result == ISC_R_SUCCESS && rdataclass != dns_rdataclass_any) {
+ if (!setzoneclass(rdataclass)) {
+ fprintf(stderr, "class mismatch: %s\n", word);
+ goto failure;
+ }
+ /*
+ * Now read the type.
+ */
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ if (isdelete) {
+ rdataclass = dns_rdataclass_any;
+ rdatatype = dns_rdatatype_any;
+ rdata->flags = DNS_RDATA_UPDATE;
+ goto doneparsing;
+ } else {
+ fprintf(stderr, "could not read type\n");
+ goto failure;
+ }
+ }
+ region.base = word;
+ region.length = strlen(word);
+ result = dns_rdatatype_fromtext(&rdatatype, &region);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "'%s' is not a valid type: %s\n", word,
+ isc_result_totext(result));
+ goto failure;
+ }
+ } else {
+ rdataclass = getzoneclass();
+ result = dns_rdatatype_fromtext(&rdatatype, &region);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr,
+ "'%s' is not a valid class or type: "
+ "%s\n",
+ word, isc_result_totext(result));
+ goto failure;
+ }
+ }
+
+ retval = parse_rdata(&cmdline, rdataclass, rdatatype, updatemsg, rdata);
+ if (retval != STATUS_MORE) {
+ goto failure;
+ }
+
+ if (isdelete) {
+ if ((rdata->flags & DNS_RDATA_UPDATE) != 0) {
+ rdataclass = dns_rdataclass_any;
+ } else {
+ rdataclass = dns_rdataclass_none;
+ }
+ } else {
+ if ((rdata->flags & DNS_RDATA_UPDATE) != 0) {
+ fprintf(stderr, "could not read rdata\n");
+ goto failure;
+ }
+ }
+
+ if (!isdelete && checknames) {
+ dns_fixedname_t fixed;
+ dns_name_t *bad;
+
+ if (!dns_rdata_checkowner(name, rdata->rdclass, rdata->type,
+ true))
+ {
+ char namebuf[DNS_NAME_FORMATSIZE];
+
+ dns_name_format(name, namebuf, sizeof(namebuf));
+ fprintf(stderr, "check-names failed: bad owner '%s'\n",
+ namebuf);
+ goto failure;
+ }
+
+ bad = dns_fixedname_initname(&fixed);
+ if (!dns_rdata_checknames(rdata, name, bad)) {
+ char namebuf[DNS_NAME_FORMATSIZE];
+
+ dns_name_format(bad, namebuf, sizeof(namebuf));
+ fprintf(stderr, "check-names failed: bad name '%s'\n",
+ namebuf);
+ goto failure;
+ }
+ }
+
+ if (!isdelete && rdata->type == dns_rdatatype_nsec3param) {
+ dns_rdata_nsec3param_t nsec3param;
+
+ result = dns_rdata_tostruct(rdata, &nsec3param, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ if (nsec3param.iterations > dns_nsec3_maxiterations()) {
+ fprintf(stderr,
+ "NSEC3PARAM has excessive iterations (> %u)\n",
+ dns_nsec3_maxiterations());
+ goto failure;
+ }
+ }
+
+doneparsing:
+
+ result = dns_message_gettemprdatalist(updatemsg, &rdatalist);
+ check_result(result, "dns_message_gettemprdatalist");
+ result = dns_message_gettemprdataset(updatemsg, &rdataset);
+ check_result(result, "dns_message_gettemprdataset");
+ rdatalist->type = rdatatype;
+ rdatalist->rdclass = rdataclass;
+ rdatalist->covers = rdatatype;
+ rdatalist->ttl = (dns_ttl_t)ttl;
+ ISC_LIST_APPEND(rdatalist->rdata, rdata, link);
+ dns_rdatalist_tordataset(rdatalist, rdataset);
+ ISC_LIST_INIT(name->list);
+ ISC_LIST_APPEND(name->list, rdataset, link);
+ dns_message_addname(updatemsg, name, DNS_SECTION_UPDATE);
+ return (STATUS_MORE);
+
+failure:
+ if (name != NULL) {
+ dns_message_puttempname(updatemsg, &name);
+ }
+ dns_message_puttemprdata(updatemsg, &rdata);
+ return (STATUS_SYNTAX);
+}
+
+static uint16_t
+evaluate_update(char *cmdline) {
+ char *word;
+ bool isdelete;
+
+ ddebug("evaluate_update()");
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read operation code\n");
+ return (STATUS_SYNTAX);
+ }
+ if (strcasecmp(word, "delete") == 0) {
+ isdelete = true;
+ } else if (strcasecmp(word, "del") == 0) {
+ isdelete = true;
+ } else if (strcasecmp(word, "add") == 0) {
+ isdelete = false;
+ } else {
+ fprintf(stderr, "incorrect operation code: %s\n", word);
+ return (STATUS_SYNTAX);
+ }
+ return (update_addordelete(cmdline, isdelete));
+}
+
+static uint16_t
+evaluate_checknames(char *cmdline) {
+ char *word;
+
+ ddebug("evaluate_checknames()");
+ word = nsu_strsep(&cmdline, " \t\r\n");
+ if (word == NULL || *word == 0) {
+ fprintf(stderr, "could not read check-names directive\n");
+ return (STATUS_SYNTAX);
+ }
+ if (strcasecmp(word, "yes") == 0 || strcasecmp(word, "true") == 0 ||
+ strcasecmp(word, "on") == 0)
+ {
+ checknames = true;
+ } else if (strcasecmp(word, "no") == 0 ||
+ strcasecmp(word, "false") == 0 ||
+ strcasecmp(word, "off") == 0)
+ {
+ checknames = false;
+ } else {
+ fprintf(stderr, "incorrect check-names directive: %s\n", word);
+ return (STATUS_SYNTAX);
+ }
+ return (STATUS_MORE);
+}
+
+static void
+setzone(dns_name_t *zonename) {
+ isc_result_t result;
+ dns_name_t *name = NULL;
+ dns_rdataset_t *rdataset = NULL;
+
+ result = dns_message_firstname(updatemsg, DNS_SECTION_ZONE);
+ if (result == ISC_R_SUCCESS) {
+ dns_message_currentname(updatemsg, DNS_SECTION_ZONE, &name);
+ dns_message_removename(updatemsg, name, DNS_SECTION_ZONE);
+ for (rdataset = ISC_LIST_HEAD(name->list); rdataset != NULL;
+ rdataset = ISC_LIST_HEAD(name->list))
+ {
+ ISC_LIST_UNLINK(name->list, rdataset, link);
+ dns_rdataset_disassociate(rdataset);
+ dns_message_puttemprdataset(updatemsg, &rdataset);
+ }
+ dns_message_puttempname(updatemsg, &name);
+ }
+
+ if (zonename != NULL) {
+ result = dns_message_gettempname(updatemsg, &name);
+ check_result(result, "dns_message_gettempname");
+ dns_name_clone(zonename, name);
+ result = dns_message_gettemprdataset(updatemsg, &rdataset);
+ check_result(result, "dns_message_gettemprdataset");
+ dns_rdataset_makequestion(rdataset, getzoneclass(),
+ dns_rdatatype_soa);
+ ISC_LIST_INIT(name->list);
+ ISC_LIST_APPEND(name->list, rdataset, link);
+ dns_message_addname(updatemsg, name, DNS_SECTION_ZONE);
+ }
+}
+
+static void
+show_message(FILE *stream, dns_message_t *msg, const char *description) {
+ isc_result_t result;
+ isc_buffer_t *buf = NULL;
+ int bufsz;
+
+ ddebug("show_message()");
+
+ setzone(userzone);
+
+ bufsz = INITTEXT;
+ do {
+ if (bufsz > MAXTEXT) {
+ fprintf(stderr, "could not allocate large enough "
+ "buffer to display message\n");
+ exit(1);
+ }
+ if (buf != NULL) {
+ isc_buffer_free(&buf);
+ }
+ isc_buffer_allocate(gmctx, &buf, bufsz);
+ result = dns_message_totext(msg, style, 0, buf);
+ bufsz *= 2;
+ } while (result == ISC_R_NOSPACE);
+ if (result != ISC_R_SUCCESS) {
+ fprintf(stderr, "could not convert message to text format.\n");
+ isc_buffer_free(&buf);
+ return;
+ }
+ fprintf(stream, "%s\n%.*s", description,
+ (int)isc_buffer_usedlength(buf), (char *)isc_buffer_base(buf));
+ fflush(stream);
+ isc_buffer_free(&buf);
+}
+
+static uint16_t
+do_next_command(char *cmdline) {
+ char *word;
+
+ ddebug("do_next_command()");
+ word = nsu_strsep(&cmdline, " \t\r\n");
+
+ if (word == NULL || *word == 0) {
+ return (STATUS_SEND);
+ }
+ if (word[0] == ';') {
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "quit") == 0) {
+ return (STATUS_QUIT);
+ }
+ if (strcasecmp(word, "prereq") == 0) {
+ return (evaluate_prereq(cmdline));
+ }
+ if (strcasecmp(word, "nxdomain") == 0) {
+ return (make_prereq(cmdline, false, false));
+ }
+ if (strcasecmp(word, "yxdomain") == 0) {
+ return (make_prereq(cmdline, true, false));
+ }
+ if (strcasecmp(word, "nxrrset") == 0) {
+ return (make_prereq(cmdline, false, true));
+ }
+ if (strcasecmp(word, "yxrrset") == 0) {
+ return (make_prereq(cmdline, true, true));
+ }
+ if (strcasecmp(word, "update") == 0) {
+ return (evaluate_update(cmdline));
+ }
+ if (strcasecmp(word, "delete") == 0) {
+ return (update_addordelete(cmdline, true));
+ }
+ if (strcasecmp(word, "del") == 0) {
+ return (update_addordelete(cmdline, true));
+ }
+ if (strcasecmp(word, "add") == 0) {
+ return (update_addordelete(cmdline, false));
+ }
+ if (strcasecmp(word, "server") == 0) {
+ return (evaluate_server(cmdline));
+ }
+ if (strcasecmp(word, "local") == 0) {
+ return (evaluate_local(cmdline));
+ }
+ if (strcasecmp(word, "zone") == 0) {
+ return (evaluate_zone(cmdline));
+ }
+ if (strcasecmp(word, "class") == 0) {
+ return (evaluate_class(cmdline));
+ }
+ if (strcasecmp(word, "send") == 0) {
+ return (STATUS_SEND);
+ }
+ if (strcasecmp(word, "debug") == 0) {
+ if (debugging) {
+ ddebugging = true;
+ } else {
+ debugging = true;
+ }
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "ttl") == 0) {
+ return (evaluate_ttl(cmdline));
+ }
+ if (strcasecmp(word, "show") == 0) {
+ show_message(stdout, updatemsg, "Outgoing update query:");
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "answer") == 0) {
+ LOCK(&answer_lock);
+ if (answer != NULL) {
+ show_message(stdout, answer, "Answer:");
+ }
+ UNLOCK(&answer_lock);
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "key") == 0) {
+ usegsstsig = false;
+ return (evaluate_key(cmdline));
+ }
+ if (strcasecmp(word, "realm") == 0) {
+ return (evaluate_realm(cmdline));
+ }
+ if (strcasecmp(word, "check-names") == 0 ||
+ strcasecmp(word, "checknames") == 0)
+ {
+ return (evaluate_checknames(cmdline));
+ }
+ if (strcasecmp(word, "gsstsig") == 0) {
+#ifdef GSSAPI
+ usegsstsig = true;
+ use_win2k_gsstsig = false;
+#else /* ifdef GSSAPI */
+ fprintf(stderr, "gsstsig not supported\n");
+#endif /* ifdef GSSAPI */
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "oldgsstsig") == 0) {
+#ifdef GSSAPI
+ usegsstsig = true;
+ use_win2k_gsstsig = true;
+#else /* ifdef GSSAPI */
+ fprintf(stderr, "gsstsig not supported\n");
+#endif /* ifdef GSSAPI */
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "help") == 0) {
+ fprintf(stdout, "nsupdate " VERSION ":\n"
+ "local address [port] (set local "
+ "resolver)\n"
+ "server address [port] (set master server "
+ "for zone)\n"
+ "send (send the update "
+ "request)\n"
+ "show (show the update "
+ "request)\n"
+ "answer (show the answer to "
+ "the last request)\n"
+ "quit (quit, any pending "
+ "update is not sent)\n"
+ "help (display this "
+ "message)\n"
+ "key [hmac:]keyname secret (use TSIG to sign "
+ "the request)\n"
+ "gsstsig (use GSS_TSIG to "
+ "sign the request)\n"
+ "oldgsstsig (use Microsoft's "
+ "GSS_TSIG to sign the request)\n"
+ "zone name (set the zone to be "
+ "updated)\n"
+ "class CLASS (set the zone's DNS "
+ "class, e.g. IN (default), CH)\n"
+ "check-names { on | off } (enable / disable "
+ "check-names)\n"
+ "[prereq] nxdomain name (require that this "
+ "name does not exist)\n"
+ "[prereq] yxdomain name (require that this "
+ "name exists)\n"
+ "[prereq] nxrrset .... (require that this "
+ "RRset does not exist)\n"
+ "[prereq] yxrrset .... (require that this "
+ "RRset exists)\n"
+ "[update] add .... (add the given "
+ "record to the zone)\n"
+ "[update] del[ete] .... (remove the given "
+ "record(s) from the zone)\n");
+ return (STATUS_MORE);
+ }
+ if (strcasecmp(word, "version") == 0) {
+ fprintf(stdout, "nsupdate " VERSION "\n");
+ return (STATUS_MORE);
+ }
+ fprintf(stderr, "incorrect section name: %s\n", word);
+ return (STATUS_SYNTAX);
+}
+
+static uint16_t
+get_next_command(void) {
+ uint16_t result = STATUS_QUIT;
+ char cmdlinebuf[MAXCMD];
+ char *cmdline;
+
+ isc_app_block();
+ if (interactive) {
+#ifdef HAVE_READLINE
+ cmdline = readline("> ");
+ if (cmdline != NULL) {
+ add_history(cmdline);
+ }
+#else /* ifdef HAVE_READLINE */
+ fprintf(stdout, "> ");
+ fflush(stdout);
+ cmdline = fgets(cmdlinebuf, MAXCMD, input);
+#endif /* ifdef HAVE_READLINE */
+ } else {
+ cmdline = fgets(cmdlinebuf, MAXCMD, input);
+ }
+ isc_app_unblock();
+
+ if (cmdline != NULL) {
+ char *tmp = cmdline;
+
+ /*
+ * Normalize input by removing any eol as readline()
+ * removes eol but fgets doesn't.
+ */
+ (void)nsu_strsep(&tmp, "\r\n");
+ result = do_next_command(cmdline);
+ }
+#ifdef HAVE_READLINE
+ if (interactive) {
+ free(cmdline);
+ }
+#endif /* ifdef HAVE_READLINE */
+ return (result);
+}
+
+static bool
+user_interaction(void) {
+ uint16_t result = STATUS_MORE;
+
+ ddebug("user_interaction()");
+ while ((result == STATUS_MORE) || (result == STATUS_SYNTAX)) {
+ result = get_next_command();
+ if (!interactive && result == STATUS_SYNTAX) {
+ fatal("syntax error");
+ }
+ }
+ if (result == STATUS_SEND) {
+ return (true);
+ }
+ return (false);
+}
+
+static void
+done_update(void) {
+ isc_event_t *event = global_event;
+ ddebug("done_update()");
+ isc_task_send(global_task, &event);
+}
+
+static void
+check_tsig_error(dns_rdataset_t *rdataset, isc_buffer_t *b) {
+ isc_result_t result;
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ dns_rdata_any_tsig_t tsig;
+
+ result = dns_rdataset_first(rdataset);
+ check_result(result, "dns_rdataset_first");
+ dns_rdataset_current(rdataset, &rdata);
+ result = dns_rdata_tostruct(&rdata, &tsig, NULL);
+ check_result(result, "dns_rdata_tostruct");
+ if (tsig.error != 0) {
+ if (isc_buffer_remaininglength(b) < 1) {
+ check_result(ISC_R_NOSPACE, "isc_buffer_"
+ "remaininglength");
+ }
+ isc_buffer_putstr(b, "(" /*)*/);
+ result = dns_tsigrcode_totext(tsig.error, b);
+ check_result(result, "dns_tsigrcode_totext");
+ if (isc_buffer_remaininglength(b) < 1) {
+ check_result(ISC_R_NOSPACE, "isc_buffer_"
+ "remaininglength");
+ }
+ isc_buffer_putstr(b, /*(*/ ")");
+ }
+}
+
+static bool
+next_master(const char *caller, isc_sockaddr_t *addr, isc_result_t eresult) {
+ char addrbuf[ISC_SOCKADDR_FORMATSIZE];
+
+ isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
+ fprintf(stderr, "; Communication with %s failed: %s\n", addrbuf,
+ isc_result_totext(eresult));
+ if (++master_inuse >= master_total) {
+ return (false);
+ }
+ ddebug("%s: trying next server", caller);
+ return (true);
+}
+
+static void
+update_completed(isc_task_t *task, isc_event_t *event) {
+ dns_requestevent_t *reqev = NULL;
+ isc_result_t result;
+ dns_request_t *request;
+
+ UNUSED(task);
+
+ ddebug("update_completed()");
+
+ requests--;
+
+ REQUIRE(event->ev_type == DNS_EVENT_REQUESTDONE);
+ reqev = (dns_requestevent_t *)event;
+ request = reqev->request;
+
+ if (shuttingdown) {
+ dns_request_destroy(&request);
+ isc_event_free(&event);
+ maybeshutdown();
+ return;
+ }
+
+ if (reqev->result != ISC_R_SUCCESS) {
+ if (!next_master("update_completed",
+ &master_servers[master_inuse], reqev->result))
+ {
+ seenerror = true;
+ goto done;
+ }
+
+ ddebug("Destroying request [%p]", request);
+ dns_request_destroy(&request);
+ dns_message_renderreset(updatemsg);
+ dns_message_settsigkey(updatemsg, NULL);
+ send_update(zname, &master_servers[master_inuse]);
+ isc_event_free(&event);
+ return;
+ }
+
+ LOCK(&answer_lock);
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTPARSE, &answer);
+ result = dns_request_getresponse(request, answer,
+ DNS_MESSAGEPARSE_PRESERVEORDER);
+ switch (result) {
+ case ISC_R_SUCCESS:
+ if (answer->verify_attempted) {
+ ddebug("tsig verification successful");
+ }
+ break;
+ case DNS_R_CLOCKSKEW:
+ case DNS_R_EXPECTEDTSIG:
+ case DNS_R_TSIGERRORSET:
+ case DNS_R_TSIGVERIFYFAILURE:
+ case DNS_R_UNEXPECTEDTSIG:
+ case ISC_R_FAILURE:
+#if 0
+ if (usegsstsig && answer->rcode == dns_rcode_noerror) {
+ /*
+ * For MS DNS that violates RFC 2845, section 4.2
+ */
+ break;
+ }
+#endif /* if 0 */
+ fprintf(stderr, "; TSIG error with server: %s\n",
+ isc_result_totext(result));
+ seenerror = true;
+ break;
+ default:
+ check_result(result, "dns_request_getresponse");
+ }
+
+ if (answer->opcode != dns_opcode_update) {
+ fatal("invalid OPCODE in response to UPDATE request");
+ }
+
+ if (answer->rcode != dns_rcode_noerror) {
+ seenerror = true;
+ if (!debugging) {
+ char buf[64];
+ isc_buffer_t b;
+ dns_rdataset_t *rds;
+
+ isc_buffer_init(&b, buf, sizeof(buf) - 1);
+ result = dns_rcode_totext(answer->rcode, &b);
+ check_result(result, "dns_rcode_totext");
+ rds = dns_message_gettsig(answer, NULL);
+ if (rds != NULL) {
+ check_tsig_error(rds, &b);
+ }
+ fprintf(stderr, "update failed: %.*s\n",
+ (int)isc_buffer_usedlength(&b), buf);
+ }
+ }
+ if (debugging) {
+ show_message(stderr, answer, "\nReply from update query:");
+ }
+ UNLOCK(&answer_lock);
+
+done:
+ dns_request_destroy(&request);
+ if (usegsstsig) {
+ dns_name_free(&tmpzonename, gmctx);
+ dns_name_free(&restart_master, gmctx);
+ dns_name_init(&tmpzonename, 0);
+ dns_name_init(&restart_master, 0);
+ }
+ isc_event_free(&event);
+ done_update();
+}
+
+static void
+send_update(dns_name_t *zone, isc_sockaddr_t *master) {
+ isc_result_t result;
+ dns_request_t *request = NULL;
+ unsigned int options = DNS_REQUESTOPT_CASE;
+ isc_sockaddr_t *srcaddr;
+
+ ddebug("send_update()");
+
+ setzone(zone);
+
+ if (usevc) {
+ options |= DNS_REQUESTOPT_TCP;
+ }
+ if (tsigkey == NULL && sig0key != NULL) {
+ result = dns_message_setsig0key(updatemsg, sig0key);
+ check_result(result, "dns_message_setsig0key");
+ }
+ if (debugging) {
+ char addrbuf[ISC_SOCKADDR_FORMATSIZE];
+
+ isc_sockaddr_format(master, addrbuf, sizeof(addrbuf));
+ fprintf(stderr, "Sending update to %s\n", addrbuf);
+ }
+
+ if (isc_sockaddr_pf(master) == AF_INET6) {
+ srcaddr = localaddr6;
+ } else {
+ srcaddr = localaddr4;
+ }
+
+ /* Windows doesn't like the tsig name to be compressed. */
+ if (updatemsg->tsigname) {
+ updatemsg->tsigname->attributes |= DNS_NAMEATTR_NOCOMPRESS;
+ }
+
+ result = dns_request_createvia(requestmgr, updatemsg, srcaddr, master,
+ -1, options, tsigkey, timeout,
+ udp_timeout, udp_retries, global_task,
+ update_completed, NULL, &request);
+ check_result(result, "dns_request_createvia");
+
+ if (debugging) {
+ show_message(stdout, updatemsg, "Outgoing update query:");
+ }
+
+ requests++;
+}
+
+static void
+next_server(const char *caller, isc_sockaddr_t *addr, isc_result_t eresult) {
+ char addrbuf[ISC_SOCKADDR_FORMATSIZE];
+
+ isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf));
+ fprintf(stderr, "; Communication with %s failed: %s\n", addrbuf,
+ isc_result_totext(eresult));
+ if (++ns_inuse >= ns_total) {
+ fatal("could not reach any name server");
+ } else {
+ ddebug("%s: trying next server", caller);
+ }
+}
+
+static void
+recvsoa(isc_task_t *task, isc_event_t *event) {
+ dns_requestevent_t *reqev = NULL;
+ dns_request_t *request = NULL;
+ isc_result_t result, eresult;
+ dns_message_t *rcvmsg = NULL;
+ dns_section_t section;
+ dns_name_t *name = NULL;
+ dns_rdataset_t *soaset = NULL;
+ dns_rdata_soa_t soa;
+ dns_rdata_t soarr = DNS_RDATA_INIT;
+ int pass = 0;
+ dns_name_t master;
+ nsu_requestinfo_t *reqinfo;
+ dns_message_t *soaquery = NULL;
+ isc_sockaddr_t *addr;
+ isc_sockaddr_t *srcaddr;
+ bool seencname = false;
+ dns_name_t tname;
+ unsigned int nlabels;
+
+ UNUSED(task);
+
+ ddebug("recvsoa()");
+
+ requests--;
+
+ REQUIRE(event->ev_type == DNS_EVENT_REQUESTDONE);
+ reqev = (dns_requestevent_t *)event;
+ request = reqev->request;
+ eresult = reqev->result;
+ reqinfo = reqev->ev_arg;
+ soaquery = reqinfo->msg;
+ addr = reqinfo->addr;
+
+ if (shuttingdown) {
+ dns_request_destroy(&request);
+ dns_message_detach(&soaquery);
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_requestinfo_t));
+ isc_event_free(&event);
+ maybeshutdown();
+ return;
+ }
+
+ if (eresult != ISC_R_SUCCESS) {
+ next_server("recvsoa", addr, eresult);
+ ddebug("Destroying request [%p]", request);
+ dns_request_destroy(&request);
+ dns_message_renderreset(soaquery);
+ dns_message_settsigkey(soaquery, NULL);
+ sendrequest(&servers[ns_inuse], soaquery, &request);
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_requestinfo_t));
+ isc_event_free(&event);
+ setzoneclass(dns_rdataclass_none);
+ return;
+ }
+
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_requestinfo_t));
+ reqinfo = NULL;
+ isc_event_free(&event);
+ reqev = NULL;
+
+ ddebug("About to create rcvmsg");
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTPARSE, &rcvmsg);
+ result = dns_request_getresponse(request, rcvmsg,
+ DNS_MESSAGEPARSE_PRESERVEORDER);
+ if (result == DNS_R_TSIGERRORSET && servers != NULL) {
+ dns_message_detach(&rcvmsg);
+ ddebug("Destroying request [%p]", request);
+ dns_request_destroy(&request);
+ reqinfo = isc_mem_get(gmctx, sizeof(nsu_requestinfo_t));
+ reqinfo->msg = soaquery;
+ reqinfo->addr = addr;
+ dns_message_renderreset(soaquery);
+ ddebug("retrying soa request without TSIG");
+
+ if (isc_sockaddr_pf(addr) == AF_INET6) {
+ srcaddr = localaddr6;
+ } else {
+ srcaddr = localaddr4;
+ }
+
+ result = dns_request_createvia(
+ requestmgr, soaquery, srcaddr, addr, -1, 0, NULL,
+ FIND_TIMEOUT * 20, FIND_TIMEOUT, 3, global_task,
+ recvsoa, reqinfo, &request);
+ check_result(result, "dns_request_createvia");
+ requests++;
+ return;
+ }
+ check_result(result, "dns_request_getresponse");
+
+ if (rcvmsg->rcode == dns_rcode_refused) {
+ next_server("recvsoa", addr, DNS_R_REFUSED);
+ dns_message_detach(&rcvmsg);
+ dns_request_destroy(&request);
+ dns_message_renderreset(soaquery);
+ dns_message_settsigkey(soaquery, NULL);
+ sendrequest(&servers[ns_inuse], soaquery, &request);
+ return;
+ }
+
+ section = DNS_SECTION_ANSWER;
+ POST(section);
+ if (debugging) {
+ show_message(stderr, rcvmsg, "Reply from SOA query:");
+ }
+
+ if (rcvmsg->opcode != dns_opcode_query) {
+ fatal("invalid OPCODE in response to SOA query");
+ }
+
+ if (rcvmsg->rcode != dns_rcode_noerror &&
+ rcvmsg->rcode != dns_rcode_nxdomain)
+ {
+ fatal("response to SOA query was unsuccessful");
+ }
+
+ if (userzone != NULL && rcvmsg->rcode == dns_rcode_nxdomain) {
+ char namebuf[DNS_NAME_FORMATSIZE];
+ dns_name_format(userzone, namebuf, sizeof(namebuf));
+ error("specified zone '%s' does not exist (NXDOMAIN)", namebuf);
+ dns_message_detach(&rcvmsg);
+ dns_request_destroy(&request);
+ dns_message_detach(&soaquery);
+ ddebug("Out of recvsoa");
+ seenerror = true;
+ done_update();
+ return;
+ }
+
+lookforsoa:
+ if (pass == 0) {
+ section = DNS_SECTION_ANSWER;
+ } else if (pass == 1) {
+ section = DNS_SECTION_AUTHORITY;
+ } else {
+ goto droplabel;
+ }
+
+ result = dns_message_firstname(rcvmsg, section);
+ if (result != ISC_R_SUCCESS) {
+ pass++;
+ goto lookforsoa;
+ }
+ while (result == ISC_R_SUCCESS) {
+ name = NULL;
+ dns_message_currentname(rcvmsg, section, &name);
+ soaset = NULL;
+ result = dns_message_findtype(name, dns_rdatatype_soa, 0,
+ &soaset);
+ if (result == ISC_R_SUCCESS) {
+ break;
+ }
+ if (section == DNS_SECTION_ANSWER) {
+ dns_rdataset_t *tset = NULL;
+ if (dns_message_findtype(name, dns_rdatatype_cname, 0,
+ &tset) == ISC_R_SUCCESS ||
+ dns_message_findtype(name, dns_rdatatype_dname, 0,
+ &tset) == ISC_R_SUCCESS)
+ {
+ seencname = true;
+ break;
+ }
+ }
+
+ result = dns_message_nextname(rcvmsg, section);
+ }
+
+ if (soaset == NULL && !seencname) {
+ pass++;
+ goto lookforsoa;
+ }
+
+ if (seencname) {
+ goto droplabel;
+ }
+
+ if (debugging) {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dns_name_format(name, namestr, sizeof(namestr));
+ fprintf(stderr, "Found zone name: %s\n", namestr);
+ }
+
+ result = dns_rdataset_first(soaset);
+ check_result(result, "dns_rdataset_first");
+
+ dns_rdata_init(&soarr);
+ dns_rdataset_current(soaset, &soarr);
+ result = dns_rdata_tostruct(&soarr, &soa, NULL);
+ check_result(result, "dns_rdata_tostruct");
+
+ dns_name_init(&master, NULL);
+ dns_name_clone(&soa.origin, &master);
+
+ if (userzone != NULL) {
+ zname = userzone;
+ } else {
+ /*
+ * Save the zone name in case we need to try a second
+ * address.
+ */
+ zname = dns_fixedname_initname(&fzname);
+ dns_name_copynf(name, zname);
+ }
+
+ if (debugging) {
+ char namestr[DNS_NAME_FORMATSIZE];
+ dns_name_format(&master, namestr, sizeof(namestr));
+ fprintf(stderr, "The master is: %s\n", namestr);
+ }
+
+ if (default_servers) {
+ char serverstr[DNS_NAME_MAXTEXT + 1];
+ isc_buffer_t buf;
+ size_t size;
+
+ isc_buffer_init(&buf, serverstr, sizeof(serverstr));
+ result = dns_name_totext(&master, true, &buf);
+ check_result(result, "dns_name_totext");
+ serverstr[isc_buffer_usedlength(&buf)] = 0;
+
+ if (master_servers != NULL && master_servers != servers) {
+ isc_mem_put(gmctx, master_servers,
+ master_alloc * sizeof(isc_sockaddr_t));
+ }
+ master_alloc = MAX_SERVERADDRS;
+ size = master_alloc * sizeof(isc_sockaddr_t);
+ master_servers = isc_mem_get(gmctx, size);
+
+ memset(master_servers, 0, size);
+ master_total = get_addresses(serverstr, dnsport, master_servers,
+ master_alloc);
+ if (master_total == 0) {
+ seenerror = true;
+ dns_rdata_freestruct(&soa);
+ dns_message_detach(&soaquery);
+ dns_request_destroy(&request);
+ dns_message_detach(&rcvmsg);
+ ddebug("Out of recvsoa");
+ done_update();
+ return;
+ }
+ master_inuse = 0;
+ } else {
+ master_from_servers();
+ }
+ dns_rdata_freestruct(&soa);
+
+#ifdef GSSAPI
+ if (usegsstsig) {
+ dns_name_init(&tmpzonename, NULL);
+ dns_name_dup(zname, gmctx, &tmpzonename);
+ dns_name_init(&restart_master, NULL);
+ dns_name_dup(&master, gmctx, &restart_master);
+ start_gssrequest(&master);
+ } else {
+ send_update(zname, &master_servers[master_inuse]);
+ setzoneclass(dns_rdataclass_none);
+ }
+#else /* ifdef GSSAPI */
+ send_update(zname, &master_servers[master_inuse]);
+ setzoneclass(dns_rdataclass_none);
+#endif /* ifdef GSSAPI */
+
+ dns_message_detach(&soaquery);
+ dns_request_destroy(&request);
+
+out:
+ dns_message_detach(&rcvmsg);
+ ddebug("Out of recvsoa");
+ return;
+
+droplabel:
+ result = dns_message_firstname(soaquery, DNS_SECTION_QUESTION);
+ INSIST(result == ISC_R_SUCCESS);
+ name = NULL;
+ dns_message_currentname(soaquery, DNS_SECTION_QUESTION, &name);
+ nlabels = dns_name_countlabels(name);
+ if (nlabels == 1) {
+ fatal("could not find enclosing zone");
+ }
+ dns_name_init(&tname, NULL);
+ dns_name_getlabelsequence(name, 1, nlabels - 1, &tname);
+ dns_name_clone(&tname, name);
+ dns_request_destroy(&request);
+ dns_message_renderreset(soaquery);
+ dns_message_settsigkey(soaquery, NULL);
+ sendrequest(&servers[ns_inuse], soaquery, &request);
+ goto out;
+}
+
+static void
+sendrequest(isc_sockaddr_t *destaddr, dns_message_t *msg,
+ dns_request_t **request) {
+ isc_result_t result;
+ nsu_requestinfo_t *reqinfo;
+ isc_sockaddr_t *srcaddr;
+
+ reqinfo = isc_mem_get(gmctx, sizeof(nsu_requestinfo_t));
+ reqinfo->msg = msg;
+ reqinfo->addr = destaddr;
+
+ if (isc_sockaddr_pf(destaddr) == AF_INET6) {
+ srcaddr = localaddr6;
+ } else {
+ srcaddr = localaddr4;
+ }
+
+ result = dns_request_createvia(requestmgr, msg, srcaddr, destaddr, -1,
+ 0, default_servers ? NULL : tsigkey,
+ FIND_TIMEOUT * 20, FIND_TIMEOUT, 3,
+ global_task, recvsoa, reqinfo, request);
+ check_result(result, "dns_request_createvia");
+ requests++;
+}
+
+#ifdef GSSAPI
+
+/*
+ * Get the realm from the users kerberos ticket if possible
+ */
+static void
+get_ticket_realm(isc_mem_t *mctx) {
+ krb5_context ctx;
+ krb5_error_code rc;
+ krb5_ccache ccache;
+ krb5_principal princ;
+ char *name;
+ const char *ticket_realm;
+
+ rc = krb5_init_context(&ctx);
+ if (rc != 0) {
+ return;
+ }
+
+ rc = krb5_cc_default(ctx, &ccache);
+ if (rc != 0) {
+ krb5_free_context(ctx);
+ return;
+ }
+
+ rc = krb5_cc_get_principal(ctx, ccache, &princ);
+ if (rc != 0) {
+ krb5_cc_close(ctx, ccache);
+ krb5_free_context(ctx);
+ return;
+ }
+
+ rc = krb5_unparse_name(ctx, princ, &name);
+ if (rc != 0) {
+ krb5_free_principal(ctx, princ);
+ krb5_cc_close(ctx, ccache);
+ krb5_free_context(ctx);
+ return;
+ }
+
+ ticket_realm = strrchr(name, '@');
+ if (ticket_realm != NULL) {
+ realm = isc_mem_strdup(mctx, ticket_realm);
+ }
+
+ free(name);
+ krb5_free_principal(ctx, princ);
+ krb5_cc_close(ctx, ccache);
+ krb5_free_context(ctx);
+ if (realm != NULL && debugging) {
+ fprintf(stderr, "Found realm from ticket: %s\n", realm + 1);
+ }
+}
+
+static void
+failed_gssrequest() {
+ seenerror = true;
+
+ dns_name_free(&tmpzonename, gmctx);
+ dns_name_free(&restart_master, gmctx);
+ dns_name_init(&tmpzonename, NULL);
+ dns_name_init(&restart_master, NULL);
+
+ done_update();
+}
+
+static void
+start_gssrequest(dns_name_t *master) {
+ dns_gss_ctx_id_t context;
+ isc_buffer_t buf;
+ isc_result_t result;
+ uint32_t val = 0;
+ dns_message_t *rmsg = NULL;
+ dns_request_t *request = NULL;
+ dns_name_t *servname;
+ dns_fixedname_t fname;
+ char namestr[DNS_NAME_FORMATSIZE];
+ char mykeystr[DNS_NAME_FORMATSIZE];
+ char *err_message = NULL;
+
+ debug("start_gssrequest");
+ usevc = true;
+
+ if (gssring != NULL) {
+ dns_tsigkeyring_detach(&gssring);
+ }
+ gssring = NULL;
+ result = dns_tsigkeyring_create(gmctx, &gssring);
+
+ if (result != ISC_R_SUCCESS) {
+ fatal("dns_tsigkeyring_create failed: %s",
+ isc_result_totext(result));
+ }
+
+ dns_name_format(master, namestr, sizeof(namestr));
+ if (kserver == NULL) {
+ kserver = isc_mem_get(gmctx, sizeof(isc_sockaddr_t));
+ }
+
+ memmove(kserver, &master_servers[master_inuse], sizeof(isc_sockaddr_t));
+
+ servname = dns_fixedname_initname(&fname);
+
+ if (realm == NULL) {
+ get_ticket_realm(gmctx);
+ }
+
+ result = snprintf(servicename, sizeof(servicename), "DNS/%s%s", namestr,
+ realm ? realm : "");
+ RUNTIME_CHECK(result < sizeof(servicename));
+ isc_buffer_init(&buf, servicename, strlen(servicename));
+ isc_buffer_add(&buf, strlen(servicename));
+ result = dns_name_fromtext(servname, &buf, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ fatal("dns_name_fromtext(servname) failed: %s",
+ isc_result_totext(result));
+ }
+
+ keyname = dns_fixedname_initname(&fkname);
+
+ isc_nonce_buf(&val, sizeof(val));
+
+ result = snprintf(mykeystr, sizeof(mykeystr), "%u.sig-%s", val,
+ namestr);
+ RUNTIME_CHECK(result <= sizeof(mykeystr));
+
+ isc_buffer_init(&buf, mykeystr, strlen(mykeystr));
+ isc_buffer_add(&buf, strlen(mykeystr));
+
+ result = dns_name_fromtext(keyname, &buf, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ fatal("dns_name_fromtext(keyname) failed: %s",
+ isc_result_totext(result));
+ }
+
+ /* Windows doesn't recognize name compression in the key name. */
+ keyname->attributes |= DNS_NAMEATTR_NOCOMPRESS;
+
+ rmsg = NULL;
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTRENDER, &rmsg);
+
+ /* Build first request. */
+ context = GSS_C_NO_CONTEXT;
+ result = dns_tkey_buildgssquery(rmsg, keyname, servname, NULL, 0,
+ &context, use_win2k_gsstsig, gmctx,
+ &err_message);
+ if (result == ISC_R_FAILURE) {
+ fprintf(stderr, "tkey query failed: %s\n",
+ err_message != NULL ? err_message : "unknown error");
+ goto failure;
+ }
+ if (result != ISC_R_SUCCESS) {
+ fatal("dns_tkey_buildgssquery failed: %s",
+ isc_result_totext(result));
+ }
+
+ send_gssrequest(kserver, rmsg, &request, context);
+ return;
+
+failure:
+ if (rmsg != NULL) {
+ dns_message_detach(&rmsg);
+ }
+ if (err_message != NULL) {
+ isc_mem_free(gmctx, err_message);
+ }
+ failed_gssrequest();
+}
+
+static void
+send_gssrequest(isc_sockaddr_t *destaddr, dns_message_t *msg,
+ dns_request_t **request, dns_gss_ctx_id_t context) {
+ isc_result_t result;
+ nsu_gssinfo_t *reqinfo;
+ unsigned int options = 0;
+ isc_sockaddr_t *srcaddr;
+
+ debug("send_gssrequest");
+ REQUIRE(destaddr != NULL);
+
+ reqinfo = isc_mem_get(gmctx, sizeof(nsu_gssinfo_t));
+ reqinfo->msg = msg;
+ reqinfo->addr = destaddr;
+ reqinfo->context = context;
+
+ options |= DNS_REQUESTOPT_TCP;
+
+ if (isc_sockaddr_pf(destaddr) == AF_INET6) {
+ srcaddr = localaddr6;
+ } else {
+ srcaddr = localaddr4;
+ }
+
+ result = dns_request_createvia(requestmgr, msg, srcaddr, destaddr, -1,
+ options, tsigkey, FIND_TIMEOUT * 20,
+ FIND_TIMEOUT, 3, global_task, recvgss,
+ reqinfo, request);
+ check_result(result, "dns_request_createvia");
+ if (debugging) {
+ show_message(stdout, msg, "Outgoing update query:");
+ }
+ requests++;
+}
+
+static void
+recvgss(isc_task_t *task, isc_event_t *event) {
+ dns_requestevent_t *reqev = NULL;
+ dns_request_t *request = NULL;
+ isc_result_t result, eresult;
+ dns_message_t *rcvmsg = NULL;
+ nsu_gssinfo_t *reqinfo;
+ dns_message_t *tsigquery = NULL;
+ isc_sockaddr_t *addr;
+ dns_gss_ctx_id_t context;
+ isc_buffer_t buf;
+ dns_name_t *servname;
+ dns_fixedname_t fname;
+ char *err_message = NULL;
+
+ UNUSED(task);
+
+ ddebug("recvgss()");
+
+ requests--;
+
+ REQUIRE(event->ev_type == DNS_EVENT_REQUESTDONE);
+ reqev = (dns_requestevent_t *)event;
+ request = reqev->request;
+ eresult = reqev->result;
+ reqinfo = reqev->ev_arg;
+ tsigquery = reqinfo->msg;
+ context = reqinfo->context;
+ addr = reqinfo->addr;
+
+ if (shuttingdown) {
+ dns_request_destroy(&request);
+ dns_message_detach(&tsigquery);
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_gssinfo_t));
+ isc_event_free(&event);
+ maybeshutdown();
+ return;
+ }
+
+ if (eresult != ISC_R_SUCCESS) {
+ ddebug("Destroying request [%p]", request);
+ dns_request_destroy(&request);
+ if (!next_master("recvgss", addr, eresult)) {
+ dns_message_detach(&tsigquery);
+ failed_gssrequest();
+ } else {
+ dns_message_renderreset(tsigquery);
+ memmove(kserver, &master_servers[master_inuse],
+ sizeof(isc_sockaddr_t));
+ send_gssrequest(kserver, tsigquery, &request, context);
+ }
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_gssinfo_t));
+ isc_event_free(&event);
+ return;
+ }
+ isc_mem_put(gmctx, reqinfo, sizeof(nsu_gssinfo_t));
+
+ isc_event_free(&event);
+ reqev = NULL;
+
+ ddebug("recvgss creating rcvmsg");
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTPARSE, &rcvmsg);
+
+ result = dns_request_getresponse(request, rcvmsg,
+ DNS_MESSAGEPARSE_PRESERVEORDER);
+ check_result(result, "dns_request_getresponse");
+
+ if (debugging) {
+ show_message(stderr, rcvmsg,
+ "recvmsg reply from GSS-TSIG query");
+ }
+
+ if (rcvmsg->opcode != dns_opcode_query) {
+ fatal("invalid OPCODE in response to GSS-TSIG query");
+ }
+
+ if (rcvmsg->rcode == dns_rcode_formerr && !tried_other_gsstsig) {
+ ddebug("recvgss trying %s GSS-TSIG",
+ use_win2k_gsstsig ? "Standard" : "Win2k");
+ if (use_win2k_gsstsig) {
+ use_win2k_gsstsig = false;
+ } else {
+ use_win2k_gsstsig = true;
+ }
+ tried_other_gsstsig = true;
+ start_gssrequest(&restart_master);
+ goto done;
+ }
+
+ if (rcvmsg->rcode != dns_rcode_noerror &&
+ rcvmsg->rcode != dns_rcode_nxdomain)
+ {
+ fatal("response to GSS-TSIG query was unsuccessful");
+ }
+
+ servname = dns_fixedname_initname(&fname);
+ isc_buffer_init(&buf, servicename, strlen(servicename));
+ isc_buffer_add(&buf, strlen(servicename));
+ result = dns_name_fromtext(servname, &buf, dns_rootname, 0, NULL);
+ check_result(result, "dns_name_fromtext");
+
+ tsigkey = NULL;
+ result = dns_tkey_gssnegotiate(tsigquery, rcvmsg, servname, &context,
+ &tsigkey, gssring, use_win2k_gsstsig,
+ &err_message);
+ switch (result) {
+ case DNS_R_CONTINUE:
+ dns_message_detach(&rcvmsg);
+ dns_request_destroy(&request);
+ send_gssrequest(kserver, tsigquery, &request, context);
+ ddebug("Out of recvgss");
+ return;
+
+ case ISC_R_SUCCESS:
+ /*
+ * XXXSRA Waaay too much fun here. There's no good
+ * reason why we need a TSIG here (the people who put
+ * it into the spec admitted at the time that it was
+ * not a security issue), and Windows clients don't
+ * seem to work if named complies with the spec and
+ * includes the gratuitous TSIG. So we're in the
+ * bizarre situation of having to choose between
+ * complying with a useless requirement in the spec
+ * and interoperating. This is nuts. If we can
+ * confirm this behavior, we should ask the WG to
+ * consider removing the requirement for the
+ * gratuitous TSIG here. For the moment, we ignore
+ * the TSIG -- this too is a spec violation, but it's
+ * the least insane thing to do.
+ */
+#if 0
+ /*
+ * Verify the signature.
+ */
+ rcvmsg->state = DNS_SECTION_ANY;
+ dns_message_setquerytsig(rcvmsg, NULL);
+ result = dns_message_settsigkey(rcvmsg, tsigkey);
+ check_result(result, "dns_message_settsigkey");
+ result = dns_message_checksig(rcvmsg, NULL);
+ ddebug("tsig verification: %s", dns_result_totext(result));
+ check_result(result, "dns_message_checksig");
+#endif /* 0 */
+
+ send_update(&tmpzonename, &master_servers[master_inuse]);
+ setzoneclass(dns_rdataclass_none);
+ break;
+
+ default:
+ fatal("dns_tkey_gssnegotiate: %s %s", isc_result_totext(result),
+ err_message != NULL ? err_message : "");
+ }
+
+done:
+ dns_request_destroy(&request);
+ dns_message_detach(&tsigquery);
+
+ dns_message_detach(&rcvmsg);
+ ddebug("Out of recvgss");
+}
+#endif /* ifdef GSSAPI */
+
+static void
+start_update(void) {
+ isc_result_t result;
+ dns_rdataset_t *rdataset = NULL;
+ dns_name_t *name = NULL;
+ dns_request_t *request = NULL;
+ dns_message_t *soaquery = NULL;
+ dns_name_t *firstname;
+ dns_section_t section = DNS_SECTION_UPDATE;
+
+ ddebug("start_update()");
+
+ LOCK(&answer_lock);
+ if (answer != NULL) {
+ dns_message_detach(&answer);
+ }
+ UNLOCK(&answer_lock);
+
+ /*
+ * If we have both the zone and the servers we have enough information
+ * to send the update straight away otherwise we need to discover
+ * the zone and / or the master server.
+ */
+ if (userzone != NULL && !default_servers && !usegsstsig) {
+ master_from_servers();
+ send_update(userzone, &master_servers[master_inuse]);
+ setzoneclass(dns_rdataclass_none);
+ return;
+ }
+
+ dns_message_create(gmctx, DNS_MESSAGE_INTENTRENDER, &soaquery);
+
+ if (default_servers) {
+ soaquery->flags |= DNS_MESSAGEFLAG_RD;
+ }
+
+ result = dns_message_gettempname(soaquery, &name);
+ check_result(result, "dns_message_gettempname");
+
+ result = dns_message_gettemprdataset(soaquery, &rdataset);
+ check_result(result, "dns_message_gettemprdataset");
+
+ dns_rdataset_makequestion(rdataset, getzoneclass(), dns_rdatatype_soa);
+
+ if (userzone != NULL) {
+ dns_name_clone(userzone, name);
+ } else {
+ dns_rdataset_t *tmprdataset;
+ result = dns_message_firstname(updatemsg, section);
+ if (result == ISC_R_NOMORE) {
+ section = DNS_SECTION_PREREQUISITE;
+ result = dns_message_firstname(updatemsg, section);
+ }
+ if (result != ISC_R_SUCCESS) {
+ dns_message_puttempname(soaquery, &name);
+ dns_rdataset_disassociate(rdataset);
+ dns_message_puttemprdataset(soaquery, &rdataset);
+ dns_message_detach(&soaquery);
+ done_update();
+ return;
+ }
+ firstname = NULL;
+ dns_message_currentname(updatemsg, section, &firstname);
+ dns_name_clone(firstname, name);
+ /*
+ * Looks to see if the first name references a DS record
+ * and if that name is not the root remove a label as DS
+ * records live in the parent zone so we need to start our
+ * search one label up.
+ */
+ tmprdataset = ISC_LIST_HEAD(firstname->list);
+ if (section == DNS_SECTION_UPDATE &&
+ !dns_name_equal(firstname, dns_rootname) &&
+ tmprdataset->type == dns_rdatatype_ds)
+ {
+ unsigned int labels = dns_name_countlabels(name);
+ dns_name_getlabelsequence(name, 1, labels - 1, name);
+ }
+ }
+
+ ISC_LIST_INIT(name->list);
+ ISC_LIST_APPEND(name->list, rdataset, link);
+ dns_message_addname(soaquery, name, DNS_SECTION_QUESTION);
+
+ ns_inuse = 0;
+ sendrequest(&servers[ns_inuse], soaquery, &request);
+}
+
+static void
+cleanup(void) {
+ ddebug("cleanup()");
+
+ LOCK(&answer_lock);
+ if (answer != NULL) {
+ dns_message_detach(&answer);
+ }
+ UNLOCK(&answer_lock);
+
+#ifdef GSSAPI
+ if (tsigkey != NULL) {
+ ddebug("detach tsigkey x%p", tsigkey);
+ dns_tsigkey_detach(&tsigkey);
+ }
+ if (gssring != NULL) {
+ ddebug("Detaching GSS-TSIG keyring");
+ dns_tsigkeyring_detach(&gssring);
+ }
+#endif /* ifdef GSSAPI */
+
+ if (sig0key != NULL) {
+ dst_key_free(&sig0key);
+ }
+
+ ddebug("Shutting down task manager");
+ isc_managers_destroy(&netmgr, &taskmgr);
+
+ ddebug("Destroying event");
+ isc_event_free(&global_event);
+
+ ddebug("Shutting down socket manager");
+ isc_socketmgr_destroy(&socketmgr);
+
+ ddebug("Shutting down timer manager");
+ isc_timermgr_destroy(&timermgr);
+
+#ifdef GSSAPI
+ /*
+ * Cleanup GSSAPI resources after taskmgr has been destroyed.
+ */
+ if (kserver != NULL) {
+ isc_mem_put(gmctx, kserver, sizeof(isc_sockaddr_t));
+ kserver = NULL;
+ }
+ if (realm != NULL) {
+ isc_mem_free(gmctx, realm);
+ realm = NULL;
+ }
+ if (dns_name_dynamic(&tmpzonename)) {
+ dns_name_free(&tmpzonename, gmctx);
+ }
+ if (dns_name_dynamic(&restart_master)) {
+ dns_name_free(&restart_master, gmctx);
+ }
+#endif /* ifdef GSSAPI */
+
+ ddebug("Removing log context");
+ isc_log_destroy(&glctx);
+
+ ddebug("Destroying memory context");
+ if (memdebugging) {
+ isc_mem_stats(gmctx, stderr);
+ }
+ isc_mem_destroy(&gmctx);
+
+ isc_mutex_destroy(&answer_lock);
+}
+
+static void
+getinput(isc_task_t *task, isc_event_t *event) {
+ bool more;
+
+ UNUSED(task);
+
+ if (shuttingdown) {
+ maybeshutdown();
+ return;
+ }
+
+ if (global_event == NULL) {
+ global_event = event;
+ }
+
+ reset_system();
+ more = user_interaction();
+ if (!more) {
+ isc_app_shutdown();
+ return;
+ }
+ start_update();
+ return;
+}
+
+int
+main(int argc, char **argv) {
+ isc_result_t result;
+ style = &dns_master_style_debug;
+
+ input = stdin;
+
+ interactive = isatty(0);
+
+ isc_app_start();
+
+ if (isc_net_probeipv4() == ISC_R_SUCCESS) {
+ have_ipv4 = true;
+ }
+ if (isc_net_probeipv6() == ISC_R_SUCCESS) {
+ have_ipv6 = true;
+ }
+ if (!have_ipv4 && !have_ipv6) {
+ fatal("could not find either IPv4 or IPv6");
+ }
+
+ pre_parse_args(argc, argv);
+
+ isc_mem_create(&gmctx);
+
+ parse_args(argc, argv);
+
+ setup_system();
+
+ result = isc_app_onrun(gmctx, global_task, getinput, NULL);
+ check_result(result, "isc_app_onrun");
+
+ (void)isc_app_run();
+
+ cleanup();
+
+ isc_app_finish();
+
+ if (seenerror) {
+ return (2);
+ } else {
+ return (0);
+ }
+}
diff --git a/bin/nsupdate/nsupdate.rst b/bin/nsupdate/nsupdate.rst
new file mode 100644
index 0000000..aad9b02
--- /dev/null
+++ b/bin/nsupdate/nsupdate.rst
@@ -0,0 +1,357 @@
+.. 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.
+
+.. highlight: console
+
+.. _man_nsupdate:
+
+nsupdate - dynamic DNS update utility
+-------------------------------------
+
+Synopsis
+~~~~~~~~
+
+:program:`nsupdate` [**-d**] [**-D**] [**-i**] [**-L** level] [ [**-g**] | [**-o**] | [**-l**] | [**-y** [hmac:]keyname:secret] | [**-k** keyfile] ] [**-t** timeout] [**-u** udptimeout] [**-r** udpretries] [**-v**] [**-T**] [**-P**] [**-V**] [ [**-4**] | [**-6**] ] [filename]
+
+Description
+~~~~~~~~~~~
+
+``nsupdate`` is used to submit Dynamic DNS Update requests, as defined in
+:rfc:`2136`, to a name server. This allows resource records to be added or
+removed from a zone without manually editing the zone file. A single
+update request can contain requests to add or remove more than one
+resource record.
+
+Zones that are under dynamic control via ``nsupdate`` or a DHCP server
+should not be edited by hand. Manual edits could conflict with dynamic
+updates and cause data to be lost.
+
+The resource records that are dynamically added or removed with
+``nsupdate`` must be in the same zone. Requests are sent to the
+zone's primary server, which is identified by the MNAME field of the
+zone's SOA record.
+
+Transaction signatures can be used to authenticate the Dynamic DNS
+updates. These use the TSIG resource record type described in :rfc:`2845`,
+the SIG(0) record described in :rfc:`2535` and :rfc:`2931`, or GSS-TSIG as
+described in :rfc:`3645`.
+
+TSIG relies on a shared secret that should only be known to ``nsupdate``
+and the name server. For instance, suitable ``key`` and ``server``
+statements are added to ``/etc/named.conf`` so that the name server
+can associate the appropriate secret key and algorithm with the IP
+address of the client application that is using TSIG
+authentication. ``ddns-confgen`` can generate suitable
+configuration fragments. ``nsupdate`` uses the ``-y`` or ``-k`` options
+to provide the TSIG shared secret; these options are mutually exclusive.
+
+SIG(0) uses public key cryptography. To use a SIG(0) key, the public key
+must be stored in a KEY record in a zone served by the name server.
+
+GSS-TSIG uses Kerberos credentials. Standard GSS-TSIG mode is switched
+on with the ``-g`` flag. A non-standards-compliant variant of GSS-TSIG
+used by Windows 2000 can be switched on with the ``-o`` flag.
+
+Options
+~~~~~~~
+
+``-4``
+ This option sets use of IPv4 only.
+
+``-6``
+ This option sets use of IPv6 only.
+
+``-d``
+ This option sets debug mode, which provides tracing information about the update
+ requests that are made and the replies received from the name server.
+
+``-D``
+ This option sets extra debug mode.
+
+``-i``
+ This option forces interactive mode, even when standard input is not a terminal.
+
+``-k keyfile``
+ This option indicates the file containing the TSIG authentication key. Keyfiles may be in
+ two formats: a single file containing a ``named.conf``-format ``key``
+ statement, which may be generated automatically by ``ddns-confgen``;
+ or a pair of files whose names are of the format
+ ``K{name}.+157.+{random}.key`` and
+ ``K{name}.+157.+{random}.private``, which can be generated by
+ ``dnssec-keygen``. The ``-k`` option can also be used to specify a SIG(0)
+ key used to authenticate Dynamic DNS update requests. In this case,
+ the key specified is not an HMAC-MD5 key.
+
+``-l``
+ This option sets local-host only mode, which sets the server address to localhost
+ (disabling the ``server`` so that the server address cannot be
+ overridden). Connections to the local server use a TSIG key
+ found in ``/var/run/named/session.key``, which is automatically
+ generated by ``named`` if any local ``primary`` zone has set
+ ``update-policy`` to ``local``. The location of this key file can be
+ overridden with the ``-k`` option.
+
+``-L level``
+ This option sets the logging debug level. If zero, logging is disabled.
+
+``-p port``
+ This option sets the port to use for connections to a name server. The default is
+ 53.
+
+``-P``
+ This option prints the list of private BIND-specific resource record types whose
+ format is understood by ``nsupdate``. See also the ``-T`` option.
+
+``-r udpretries``
+ This option sets the number of UDP retries. The default is 3. If zero, only one update
+ request is made.
+
+``-t timeout``
+ This option sets the maximum time an update request can take before it is aborted. The
+ default is 300 seconds. If zero, the timeout is disabled.
+
+``-T``
+ This option prints the list of IANA standard resource record types whose format is
+ understood by ``nsupdate``. ``nsupdate`` exits after the lists
+ are printed. The ``-T`` option can be combined with the ``-P``
+ option.
+
+ Other types can be entered using ``TYPEXXXXX`` where ``XXXXX`` is the
+ decimal value of the type with no leading zeros. The rdata, if
+ present, is parsed using the UNKNOWN rdata format, (<backslash>
+ <hash> <space> <length> <space> <hexstring>).
+
+``-u udptimeout``
+ This option sets the UDP retry interval. The default is 3 seconds. If zero, the
+ interval is computed from the timeout interval and number of UDP
+ retries.
+
+``-v``
+ This option specifies that TCP should be used even for small update requests. By default, ``nsupdate`` uses
+ UDP to send update requests to the name server unless they are too
+ large to fit in a UDP request, in which case TCP is used. TCP may
+ be preferable when a batch of update requests is made.
+
+``-V``
+ This option prints the version number and exits.
+
+``-y [hmac:]keyname:secret``
+ This option sets the literal TSIG authentication key. ``keyname`` is the name of the key,
+ and ``secret`` is the base64 encoded shared secret. ``hmac`` is the
+ name of the key algorithm; valid choices are ``hmac-md5``,
+ ``hmac-sha1``, ``hmac-sha224``, ``hmac-sha256``, ``hmac-sha384``, or
+ ``hmac-sha512``. If ``hmac`` is not specified, the default is
+ ``hmac-md5``, or if MD5 was disabled, ``hmac-sha256``.
+
+ NOTE: Use of the ``-y`` option is discouraged because the shared
+ secret is supplied as a command-line argument in clear text. This may
+ be visible in the output from ps1 or in a history file maintained by
+ the user's shell.
+
+Input Format
+~~~~~~~~~~~~
+
+``nsupdate`` reads input from ``filename`` or standard input. Each
+command is supplied on exactly one line of input. Some commands are for
+administrative purposes; others are either update instructions or
+prerequisite checks on the contents of the zone. These checks set
+conditions that some name or set of resource records (RRset) either
+exists or is absent from the zone. These conditions must be met if the
+entire update request is to succeed. Updates are rejected if the
+tests for the prerequisite conditions fail.
+
+Every update request consists of zero or more prerequisites and zero or
+more updates. This allows a suitably authenticated update request to
+proceed if some specified resource records are either present or missing from
+the zone. A blank input line (or the ``send`` command) causes the
+accumulated commands to be sent as one Dynamic DNS update request to the
+name server.
+
+The command formats and their meanings are as follows:
+
+``server servername port``
+ This command sends all dynamic update requests to the name server ``servername``.
+ When no server statement is provided, ``nsupdate`` sends updates
+ to the primary server of the correct zone. The MNAME field of that
+ zone's SOA record identify the primary server for that zone.
+ ``port`` is the port number on ``servername`` where the dynamic
+ update requests are sent. If no port number is specified, the default
+ DNS port number of 53 is used.
+
+ .. note:: This command has no effect when GSS-TSIG is in use.
+
+``local address port``
+ This command sends all dynamic update requests using the local ``address``. When
+ no local statement is provided, ``nsupdate`` sends updates using
+ an address and port chosen by the system. ``port`` can also
+ be used to force requests to come from a specific port. If no port number
+ is specified, the system assigns one.
+
+``zone zonename``
+ This command specifies that all updates are to be made to the zone ``zonename``.
+ If no ``zone`` statement is provided, ``nsupdate`` attempts to
+ determine the correct zone to update based on the rest of the input.
+
+``class classname``
+ This command specifies the default class. If no ``class`` is specified, the default
+ class is ``IN``.
+
+``ttl seconds``
+ This command specifies the default time-to-live, in seconds, for records to be added. The value
+ ``none`` clears the default TTL.
+
+``key hmac:keyname secret``
+ This command specifies that all updates are to be TSIG-signed using the
+ ``keyname``-``secret`` pair. If ``hmac`` is specified, it sets
+ the signing algorithm in use. The default is ``hmac-md5``; if MD5
+ was disabled, the default is ``hmac-sha256``. The ``key`` command overrides any key
+ specified on the command line via ``-y`` or ``-k``.
+
+``gsstsig``
+ This command uses GSS-TSIG to sign the updates. This is equivalent to specifying
+ ``-g`` on the command line.
+
+``oldgsstsig``
+ This command uses the Windows 2000 version of GSS-TSIG to sign the updates. This is
+ equivalent to specifying ``-o`` on the command line.
+
+``realm [realm_name]``
+ When using GSS-TSIG, this command specifies the use of ``realm_name`` rather than the default realm
+ in ``krb5.conf``. If no realm is specified, the saved realm is
+ cleared.
+
+``check-names [yes_or_no]``
+ This command turns on or off check-names processing on records to be added.
+ Check-names has no effect on prerequisites or records to be deleted.
+ By default check-names processing is on. If check-names processing
+ fails, the record is not added to the UPDATE message.
+
+``prereq nxdomain domain-name``
+ This command requires that no resource record of any type exist with the name
+ ``domain-name``.
+
+``prereq yxdomain domain-name``
+ This command requires that ``domain-name`` exist (as at least one resource
+ record, of any type).
+
+``prereq nxrrset domain-name class type``
+ This command requires that no resource record exist of the specified ``type``,
+ ``class``, and ``domain-name``. If ``class`` is omitted, IN (Internet)
+ is assumed.
+
+``prereq yxrrset domain-name class type``
+ This command requires that a resource record of the specified ``type``,
+ ``class`` and ``domain-name`` exist. If ``class`` is omitted, IN
+ (internet) is assumed.
+
+``prereq yxrrset domain-name class type data``
+ With this command, the ``data`` from each set of prerequisites of this form sharing a
+ common ``type``, ``class``, and ``domain-name`` are combined to form
+ a set of RRs. This set of RRs must exactly match the set of RRs
+ existing in the zone at the given ``type``, ``class``, and
+ ``domain-name``. The ``data`` are written in the standard text
+ representation of the resource record's RDATA.
+
+``update delete domain-name ttl class type data``
+ This command deletes any resource records named ``domain-name``. If ``type`` and
+ ``data`` are provided, only matching resource records are removed.
+ The Internet class is assumed if ``class`` is not supplied. The
+ ``ttl`` is ignored, and is only allowed for compatibility.
+
+``update add domain-name ttl class type data``
+ This command adds a new resource record with the specified ``ttl``, ``class``, and
+ ``data``.
+
+``show``
+ This command displays the current message, containing all of the prerequisites and
+ updates specified since the last send.
+
+``send``
+ This command sends the current message. This is equivalent to entering a blank
+ line.
+
+``answer``
+ This command displays the answer.
+
+``debug``
+ This command turns on debugging.
+
+``version``
+ This command prints the version number.
+
+``help``
+ This command prints a list of commands.
+
+Lines beginning with a semicolon (;) are comments and are ignored.
+
+Examples
+~~~~~~~~
+
+The examples below show how ``nsupdate`` can be used to insert and
+delete resource records from the ``example.com`` zone. Notice that the
+input in each example contains a trailing blank line, so that a group of
+commands is sent as one dynamic update request to the primary name
+server for ``example.com``.
+
+::
+
+ # nsupdate
+ > update delete oldhost.example.com A
+ > update add newhost.example.com 86400 A 172.16.1.1
+ > send
+
+Any A records for ``oldhost.example.com`` are deleted, and an A record
+for ``newhost.example.com`` with IP address 172.16.1.1 is added. The
+newly added record has a TTL of 1 day (86400 seconds).
+
+::
+
+ # nsupdate
+ > prereq nxdomain nickname.example.com
+ > update add nickname.example.com 86400 CNAME somehost.example.com
+ > send
+
+The prerequisite condition tells the name server to verify that there are
+no resource records of any type for ``nickname.example.com``. If there
+are, the update request fails. If this name does not exist, a CNAME for
+it is added. This ensures that when the CNAME is added, it cannot
+conflict with the long-standing rule in :rfc:`1034` that a name must not
+exist as any other record type if it exists as a CNAME. (The rule has
+been updated for DNSSEC in :rfc:`2535` to allow CNAMEs to have RRSIG,
+DNSKEY, and NSEC records.)
+
+Files
+~~~~~
+
+``/etc/resolv.conf``
+ Used to identify the default name server
+
+``/var/run/named/session.key``
+ Sets the default TSIG key for use in local-only mode
+
+``K{name}.+157.+{random}.key``
+ Base-64 encoding of the HMAC-MD5 key created by ``dnssec-keygen``.
+
+``K{name}.+157.+{random}.private``
+ Base-64 encoding of the HMAC-MD5 key created by ``dnssec-keygen``.
+
+See Also
+~~~~~~~~
+
+:rfc:`2136`, :rfc:`3007`, :rfc:`2104`, :rfc:`2845`, :rfc:`1034`, :rfc:`2535`, :rfc:`2931`,
+:manpage:`named(8)`, :manpage:`ddns-confgen(8)`, :manpage:`dnssec-keygen(8)`.
+
+Bugs
+~~~~
+
+The TSIG key is redundantly stored in two separate files. This is a
+consequence of ``nsupdate`` using the DST library for its cryptographic
+operations, and may change in future releases.
diff --git a/bin/nsupdate/win32/nsupdate.vcxproj.filters.in b/bin/nsupdate/win32/nsupdate.vcxproj.filters.in
new file mode 100644
index 0000000..477847e
--- /dev/null
+++ b/bin/nsupdate/win32/nsupdate.vcxproj.filters.in
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="Source Files">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ <Filter Include="Resource Files">
+ <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+ <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="..\nsupdate.c">
+ <Filter>Source Files</Filter>
+ </ClCompile>
+ </ItemGroup>
+</Project> \ No newline at end of file
diff --git a/bin/nsupdate/win32/nsupdate.vcxproj.in b/bin/nsupdate/win32/nsupdate.vcxproj.in
new file mode 100644
index 0000000..572d939
--- /dev/null
+++ b/bin/nsupdate/win32/nsupdate.vcxproj.in
@@ -0,0 +1,119 @@
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+ <Platform>@PLATFORM@</Platform>
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+ <ProjectConfiguration Include="Release|@PLATFORM@">
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+ </PropertyGroup>
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+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+ <LinkIncremental>true</LinkIncremental>
+ <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
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+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|@PLATFORM@'">
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+ <OutDir>..\..\..\Build\$(Configuration)\</OutDir>
+ <IntDir>.\$(Configuration)\</IntDir>
+ <IntDirSharingDetected>None</IntDirSharingDetected>
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+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|@PLATFORM@'">
+ <ClCompile>
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+ </PrecompiledHeader>
+ <WarningLevel>Level4</WarningLevel>
+ <TreatWarningAsError>false</TreatWarningAsError>
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+ <PreprocessorDefinitions>WIN32;@USE_GSSAPI@USE_READLINE_STATIC;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
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+ </ImportGroup>
+</Project>
diff --git a/bin/nsupdate/win32/nsupdate.vcxproj.user b/bin/nsupdate/win32/nsupdate.vcxproj.user
new file mode 100644
index 0000000..ace9a86
--- /dev/null
+++ b/bin/nsupdate/win32/nsupdate.vcxproj.user
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 08:19:39 +0000