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-rw-r--r--bin/delv/delv.c1868
1 files changed, 1868 insertions, 0 deletions
diff --git a/bin/delv/delv.c b/bin/delv/delv.c
new file mode 100644
index 0000000..e1e9e7f
--- /dev/null
+++ b/bin/delv/delv.c
@@ -0,0 +1,1868 @@
+/*
+ * 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.
+ */
+
+#include <arpa/inet.h>
+#include <bind.keys.h>
+#include <inttypes.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <isc/app.h>
+#include <isc/attributes.h>
+#include <isc/base64.h>
+#include <isc/buffer.h>
+#include <isc/hex.h>
+#include <isc/log.h>
+#include <isc/managers.h>
+#include <isc/md.h>
+#include <isc/mem.h>
+#include <isc/netmgr.h>
+#include <isc/parseint.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/sockaddr.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include <dns/byaddr.h>
+#include <dns/client.h>
+#include <dns/fixedname.h>
+#include <dns/keytable.h>
+#include <dns/keyvalues.h>
+#include <dns/log.h>
+#include <dns/masterdump.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdataset.h>
+#include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
+#include <dns/secalg.h>
+#include <dns/view.h>
+
+#include <dst/dst.h>
+
+#include <isccfg/log.h>
+#include <isccfg/namedconf.h>
+
+#include <irs/resconf.h>
+
+#define CHECK(r) \
+ do { \
+ result = (r); \
+ if (result != ISC_R_SUCCESS) \
+ goto cleanup; \
+ } while (0)
+
+#define MAXNAME (DNS_NAME_MAXTEXT + 1)
+
+/* Variables used internally by delv. */
+char *progname;
+static isc_mem_t *mctx = NULL;
+static isc_log_t *lctx = NULL;
+
+/* Configurables */
+static char *server = NULL;
+static const char *port = "53";
+static isc_sockaddr_t *srcaddr4 = NULL, *srcaddr6 = NULL;
+static isc_sockaddr_t a4, a6;
+static char *curqname = NULL, *qname = NULL;
+static bool classset = false;
+static dns_rdatatype_t qtype = dns_rdatatype_none;
+static bool typeset = false;
+
+static unsigned int styleflags = 0;
+static uint32_t splitwidth = 0xffffffff;
+static bool showcomments = true, showdnssec = true, showtrust = true,
+ rrcomments = true, noclass = false, nocrypto = false, nottl = false,
+ multiline = false, short_form = false, print_unknown_format = false,
+ yaml = false;
+
+static bool resolve_trace = false, validator_trace = false,
+ message_trace = false;
+
+static bool use_ipv4 = true, use_ipv6 = true;
+
+static bool cdflag = false, no_sigs = false, root_validation = true;
+
+static bool use_tcp = false;
+
+static char *anchorfile = NULL;
+static char *trust_anchor = NULL;
+static int num_keys = 0;
+
+static dns_fixedname_t afn;
+static dns_name_t *anchor_name = NULL;
+
+/* Default bind.keys contents */
+static char anchortext[] = TRUST_ANCHORS;
+
+/*
+ * Static function prototypes
+ */
+static isc_result_t
+get_reverse(char *reverse, size_t len, char *value, bool strict);
+
+static isc_result_t
+parse_uint(uint32_t *uip, const char *value, uint32_t max, const char *desc);
+
+static void
+usage(void) {
+ fprintf(stderr,
+ "Usage: delv [@server] {q-opt} {d-opt} [domain] [q-type] "
+ "[q-class]\n"
+ "Where: domain is in the Domain Name System\n"
+ " q-class is one of (in,hs,ch,...) [default: in]\n"
+ " q-type is one of "
+ "(a,any,mx,ns,soa,hinfo,axfr,txt,...) "
+ "[default:a]\n"
+ " q-opt is one of:\n"
+ " -4 (use IPv4 query "
+ "transport "
+ "only)\n"
+ " -6 (use IPv6 query "
+ "transport "
+ "only)\n"
+ " -a anchor-file (specify root trust "
+ "anchor)\n"
+ " -b address[#port] (bind to source "
+ "address/port)\n"
+ " -c class (option included for "
+ "compatibility;\n"
+ " -d level (set debugging level)\n"
+ " -h (print help and exit)\n"
+ " -i (disable DNSSEC "
+ "validation)\n"
+ " -m (enable memory usage "
+ "debugging)\n"
+ " -p port (specify port number)\n"
+ " -q name (specify query name)\n"
+ " -t type (specify query type)\n"
+ " only IN is supported)\n"
+ " -v (print version and "
+ "exit)\n"
+ " -x dot-notation (shortcut for reverse "
+ "lookups)\n"
+ " d-opt is of the form +keyword[=value], where "
+ "keyword "
+ "is:\n"
+ " +[no]all (Set or clear all "
+ "display "
+ "flags)\n"
+ " +[no]class (Control display of "
+ "class)\n"
+ " +[no]comments (Control display of "
+ "comment lines)\n"
+ " +[no]crypto (Control display of "
+ "cryptographic\n"
+ " fields in records)\n"
+ " +[no]dlv (Obsolete)\n"
+ " +[no]dnssec (Display DNSSEC "
+ "records)\n"
+ " +[no]mtrace (Trace messages "
+ "received)\n"
+ " +[no]multiline (Print records in an "
+ "expanded format)\n"
+ " +[no]root (DNSSEC validation trust "
+ "anchor)\n"
+ " +[no]rrcomments (Control display of "
+ "per-record "
+ "comments)\n"
+ " +[no]rtrace (Trace resolver "
+ "fetches)\n"
+ " +[no]short (Short form answer)\n"
+ " +[no]split=## (Split hex/base64 fields "
+ "into chunks)\n"
+ " +[no]tcp (TCP mode)\n"
+ " +[no]ttl (Control display of ttls "
+ "in records)\n"
+ " +[no]trust (Control display of "
+ "trust "
+ "level)\n"
+ " +[no]unknownformat (Print RDATA in RFC 3597 "
+ "\"unknown\" format)\n"
+ " +[no]vtrace (Trace validation "
+ "process)\n"
+ " +[no]yaml (Present the results as "
+ "YAML)\n");
+ exit(1);
+}
+
+noreturn static void
+fatal(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+static void
+fatal(const char *format, ...) {
+ va_list args;
+
+ fflush(stdout);
+ fprintf(stderr, "%s: ", progname);
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+ exit(1);
+}
+
+static void
+warn(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
+
+static void
+warn(const char *format, ...) {
+ va_list args;
+
+ fflush(stdout);
+ fprintf(stderr, "%s: warning: ", progname);
+ va_start(args, format);
+ vfprintf(stderr, format, args);
+ va_end(args);
+ fprintf(stderr, "\n");
+}
+
+static isc_logcategory_t categories[] = { { "delv", 0 }, { NULL, 0 } };
+#define LOGCATEGORY_DEFAULT (&categories[0])
+#define LOGMODULE_DEFAULT (&modules[0])
+
+static isc_logmodule_t modules[] = { { "delv", 0 }, { NULL, 0 } };
+
+static void
+delv_log(int level, const char *fmt, ...) ISC_FORMAT_PRINTF(2, 3);
+
+static void
+delv_log(int level, const char *fmt, ...) {
+ va_list ap;
+ char msgbuf[2048];
+
+ if (!isc_log_wouldlog(lctx, level)) {
+ return;
+ }
+
+ va_start(ap, fmt);
+
+ vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
+ isc_log_write(lctx, LOGCATEGORY_DEFAULT, LOGMODULE_DEFAULT, level, "%s",
+ msgbuf);
+ va_end(ap);
+}
+
+static int loglevel = 0;
+
+static void
+setup_logging(FILE *errout) {
+ isc_result_t result;
+ isc_logdestination_t destination;
+ isc_logconfig_t *logconfig = NULL;
+
+ isc_log_create(mctx, &lctx, &logconfig);
+ isc_log_registercategories(lctx, categories);
+ isc_log_registermodules(lctx, modules);
+ isc_log_setcontext(lctx);
+ dns_log_init(lctx);
+ dns_log_setcontext(lctx);
+ cfg_log_init(lctx);
+
+ destination.file.stream = errout;
+ destination.file.name = NULL;
+ destination.file.versions = ISC_LOG_ROLLNEVER;
+ destination.file.maximum_size = 0;
+ isc_log_createchannel(logconfig, "stderr", ISC_LOG_TOFILEDESC,
+ ISC_LOG_DYNAMIC, &destination,
+ ISC_LOG_PRINTPREFIX);
+
+ isc_log_setdebuglevel(lctx, loglevel);
+ isc_log_settag(logconfig, ";; ");
+
+ result = isc_log_usechannel(logconfig, "stderr",
+ ISC_LOGCATEGORY_DEFAULT, NULL);
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't attach to log channel 'stderr'");
+ }
+
+ if (resolve_trace && loglevel < 1) {
+ isc_log_createchannel(logconfig, "resolver", ISC_LOG_TOFILEDESC,
+ ISC_LOG_DEBUG(1), &destination,
+ ISC_LOG_PRINTPREFIX);
+
+ result = isc_log_usechannel(logconfig, "resolver",
+ DNS_LOGCATEGORY_RESOLVER,
+ DNS_LOGMODULE_RESOLVER);
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't attach to log channel 'resolver'");
+ }
+ }
+
+ if (validator_trace && loglevel < 3) {
+ isc_log_createchannel(logconfig, "validator",
+ ISC_LOG_TOFILEDESC, ISC_LOG_DEBUG(3),
+ &destination, ISC_LOG_PRINTPREFIX);
+
+ result = isc_log_usechannel(logconfig, "validator",
+ DNS_LOGCATEGORY_DNSSEC,
+ DNS_LOGMODULE_VALIDATOR);
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't attach to log channel 'validator'");
+ }
+ }
+
+ if (message_trace && loglevel < 10) {
+ isc_log_createchannel(logconfig, "messages", ISC_LOG_TOFILEDESC,
+ ISC_LOG_DEBUG(10), &destination,
+ ISC_LOG_PRINTPREFIX);
+
+ result = isc_log_usechannel(logconfig, "messages",
+ DNS_LOGCATEGORY_RESOLVER,
+ DNS_LOGMODULE_PACKETS);
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't attach to log channel 'messagse'");
+ }
+ }
+}
+
+static void
+print_status(dns_rdataset_t *rdataset) {
+ char buf[1024] = { 0 };
+
+ REQUIRE(rdataset != NULL);
+
+ if (!showtrust || !dns_rdataset_isassociated(rdataset)) {
+ return;
+ }
+
+ buf[0] = '\0';
+
+ if ((rdataset->attributes & DNS_RDATASETATTR_NEGATIVE) != 0) {
+ strlcat(buf, "negative response", sizeof(buf));
+ strlcat(buf, (yaml ? "_" : ", "), sizeof(buf));
+ }
+
+ switch (rdataset->trust) {
+ case dns_trust_none:
+ strlcat(buf, "untrusted", sizeof(buf));
+ break;
+ case dns_trust_pending_additional:
+ strlcat(buf, "signed additional data", sizeof(buf));
+ if (!yaml) {
+ strlcat(buf, ", ", sizeof(buf));
+ }
+ strlcat(buf, "pending validation", sizeof(buf));
+ break;
+ case dns_trust_pending_answer:
+ strlcat(buf, "signed answer", sizeof(buf));
+ if (!yaml) {
+ strlcat(buf, ", ", sizeof(buf));
+ }
+ strlcat(buf, "pending validation", sizeof(buf));
+ break;
+ case dns_trust_additional:
+ strlcat(buf, "unsigned additional data", sizeof(buf));
+ break;
+ case dns_trust_glue:
+ strlcat(buf, "glue data", sizeof(buf));
+ break;
+ case dns_trust_answer:
+ if (root_validation) {
+ strlcat(buf, "unsigned answer", sizeof(buf));
+ } else {
+ strlcat(buf, "answer not validated", sizeof(buf));
+ }
+ break;
+ case dns_trust_authauthority:
+ strlcat(buf, "authority data", sizeof(buf));
+ break;
+ case dns_trust_authanswer:
+ strlcat(buf, "authoritative", sizeof(buf));
+ break;
+ case dns_trust_secure:
+ strlcat(buf, "fully validated", sizeof(buf));
+ break;
+ case dns_trust_ultimate:
+ strlcat(buf, "ultimate trust", sizeof(buf));
+ break;
+ }
+
+ if (yaml) {
+ char *p;
+
+ /* Convert spaces to underscores for YAML */
+ for (p = buf; p != NULL && *p != '\0'; p++) {
+ if (*p == ' ') {
+ *p = '_';
+ }
+ }
+
+ printf(" - %s:\n", buf);
+ } else {
+ printf("; %s\n", buf);
+ }
+}
+
+static isc_result_t
+printdata(dns_rdataset_t *rdataset, dns_name_t *owner,
+ dns_master_style_t *style) {
+ isc_result_t result = ISC_R_SUCCESS;
+ static dns_trust_t trust;
+ static bool first = true;
+ isc_buffer_t target;
+ isc_region_t r;
+ char *t = NULL;
+ int len = 2048;
+
+ if (!dns_rdataset_isassociated(rdataset)) {
+ char namebuf[DNS_NAME_FORMATSIZE];
+ dns_name_format(owner, namebuf, sizeof(namebuf));
+ delv_log(ISC_LOG_DEBUG(4), "WARN: empty rdataset %s", namebuf);
+ return (ISC_R_SUCCESS);
+ }
+
+ if (!showdnssec && rdataset->type == dns_rdatatype_rrsig) {
+ return (ISC_R_SUCCESS);
+ }
+
+ if (first || rdataset->trust != trust) {
+ if (!first && showtrust && !short_form && !yaml) {
+ putchar('\n');
+ }
+ print_status(rdataset);
+ trust = rdataset->trust;
+ first = false;
+ }
+
+ do {
+ t = isc_mem_get(mctx, len);
+
+ isc_buffer_init(&target, t, len);
+ if (short_form) {
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ for (result = dns_rdataset_first(rdataset);
+ result == ISC_R_SUCCESS;
+ result = dns_rdataset_next(rdataset))
+ {
+ if ((rdataset->attributes &
+ DNS_RDATASETATTR_NEGATIVE) != 0)
+ {
+ continue;
+ }
+
+ dns_rdataset_current(rdataset, &rdata);
+ result = dns_rdata_tofmttext(
+ &rdata, dns_rootname, styleflags, 0,
+ splitwidth, " ", &target);
+ if (result != ISC_R_SUCCESS) {
+ break;
+ }
+
+ if (isc_buffer_availablelength(&target) < 1) {
+ result = ISC_R_NOSPACE;
+ break;
+ }
+
+ isc_buffer_putstr(&target, "\n");
+
+ dns_rdata_reset(&rdata);
+ }
+ } else {
+ dns_indent_t indent = { " ", 2 };
+ if (!yaml && (rdataset->attributes &
+ DNS_RDATASETATTR_NEGATIVE) != 0)
+ {
+ isc_buffer_putstr(&target, "; ");
+ }
+ result = dns_master_rdatasettotext(
+ owner, rdataset, style, yaml ? &indent : NULL,
+ &target);
+ }
+
+ if (result == ISC_R_NOSPACE) {
+ isc_mem_put(mctx, t, len);
+ len += 1024;
+ } else if (result == ISC_R_NOMORE) {
+ result = ISC_R_SUCCESS;
+ } else {
+ CHECK(result);
+ }
+ } while (result == ISC_R_NOSPACE);
+
+ isc_buffer_usedregion(&target, &r);
+ printf("%.*s", (int)r.length, (char *)r.base);
+
+cleanup:
+ if (t != NULL) {
+ isc_mem_put(mctx, t, len);
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+setup_style(dns_master_style_t **stylep) {
+ isc_result_t result;
+ dns_master_style_t *style = NULL;
+
+ REQUIRE(stylep != NULL && *stylep == NULL);
+
+ styleflags |= DNS_STYLEFLAG_REL_OWNER;
+ if (yaml) {
+ styleflags |= DNS_STYLEFLAG_YAML;
+ } else {
+ if (showcomments) {
+ styleflags |= DNS_STYLEFLAG_COMMENT;
+ }
+ if (print_unknown_format) {
+ styleflags |= DNS_STYLEFLAG_UNKNOWNFORMAT;
+ }
+ if (rrcomments) {
+ styleflags |= DNS_STYLEFLAG_RRCOMMENT;
+ }
+ if (nottl) {
+ styleflags |= DNS_STYLEFLAG_NO_TTL;
+ }
+ if (noclass) {
+ styleflags |= DNS_STYLEFLAG_NO_CLASS;
+ }
+ if (nocrypto) {
+ styleflags |= DNS_STYLEFLAG_NOCRYPTO;
+ }
+ if (multiline) {
+ styleflags |= DNS_STYLEFLAG_MULTILINE;
+ styleflags |= DNS_STYLEFLAG_COMMENT;
+ }
+ }
+
+ if (multiline || (nottl && noclass)) {
+ result = dns_master_stylecreate(&style, styleflags, 24, 24, 24,
+ 32, 80, 8, splitwidth, mctx);
+ } else if (nottl || noclass) {
+ result = dns_master_stylecreate(&style, styleflags, 24, 24, 32,
+ 40, 80, 8, splitwidth, mctx);
+ } else {
+ result = dns_master_stylecreate(&style, styleflags, 24, 32, 40,
+ 48, 80, 8, splitwidth, mctx);
+ }
+
+ if (result == ISC_R_SUCCESS) {
+ *stylep = style;
+ }
+ return (result);
+}
+
+static isc_result_t
+convert_name(dns_fixedname_t *fn, dns_name_t **name, const char *text) {
+ isc_result_t result;
+ isc_buffer_t b;
+ dns_name_t *n;
+ unsigned int len;
+
+ REQUIRE(fn != NULL && name != NULL && text != NULL);
+ len = strlen(text);
+
+ isc_buffer_constinit(&b, text, len);
+ isc_buffer_add(&b, len);
+ n = dns_fixedname_initname(fn);
+
+ result = dns_name_fromtext(n, &b, dns_rootname, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "failed to convert QNAME %s: %s", text,
+ isc_result_totext(result));
+ return (result);
+ }
+
+ *name = n;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+key_fromconfig(const cfg_obj_t *key, dns_client_t *client) {
+ dns_rdata_dnskey_t dnskey;
+ dns_rdata_ds_t ds;
+ uint32_t rdata1, rdata2, rdata3;
+ const char *datastr = NULL, *keynamestr = NULL, *atstr = NULL;
+ unsigned char data[4096];
+ isc_buffer_t databuf;
+ unsigned char rrdata[4096];
+ isc_buffer_t rrdatabuf;
+ isc_region_t r;
+ dns_fixedname_t fkeyname;
+ dns_name_t *keyname;
+ isc_result_t result;
+ bool match_root = false;
+ enum {
+ INITIAL_KEY,
+ STATIC_KEY,
+ INITIAL_DS,
+ STATIC_DS,
+ TRUSTED
+ } anchortype;
+ const cfg_obj_t *obj;
+
+ keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name"));
+ CHECK(convert_name(&fkeyname, &keyname, keynamestr));
+
+ if (!root_validation) {
+ return (ISC_R_SUCCESS);
+ }
+
+ if (anchor_name) {
+ match_root = dns_name_equal(keyname, anchor_name);
+ }
+
+ if (!match_root) {
+ return (ISC_R_SUCCESS);
+ }
+
+ if (!root_validation) {
+ return (ISC_R_SUCCESS);
+ }
+
+ delv_log(ISC_LOG_DEBUG(3), "adding trust anchor %s", trust_anchor);
+
+ /* if DNSKEY, flags; if DS, key tag */
+ rdata1 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata1"));
+
+ /* if DNSKEY, protocol; if DS, algorithm */
+ rdata2 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata2"));
+
+ /* if DNSKEY, algorithm; if DS, digest type */
+ rdata3 = cfg_obj_asuint32(cfg_tuple_get(key, "rdata3"));
+
+ /* What type of trust anchor is this? */
+ obj = cfg_tuple_get(key, "anchortype");
+ if (cfg_obj_isvoid(obj)) {
+ /*
+ * "anchortype" is not defined, this must be a static-key
+ * configured with trusted-keys.
+ */
+ anchortype = STATIC_KEY;
+ } else {
+ atstr = cfg_obj_asstring(obj);
+ if (strcasecmp(atstr, "static-key") == 0) {
+ anchortype = STATIC_KEY;
+ } else if (strcasecmp(atstr, "static-ds") == 0) {
+ anchortype = STATIC_DS;
+ } else if (strcasecmp(atstr, "initial-key") == 0) {
+ anchortype = INITIAL_KEY;
+ } else if (strcasecmp(atstr, "initial-ds") == 0) {
+ anchortype = INITIAL_DS;
+ } else {
+ delv_log(ISC_LOG_ERROR,
+ "key '%s': invalid initialization method '%s'",
+ keynamestr, atstr);
+ result = ISC_R_FAILURE;
+ goto cleanup;
+ }
+ }
+
+ isc_buffer_init(&databuf, data, sizeof(data));
+ isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata));
+
+ if (rdata1 > 0xffff) {
+ CHECK(ISC_R_RANGE);
+ }
+ if (rdata2 > 0xff) {
+ CHECK(ISC_R_RANGE);
+ }
+ if (rdata3 > 0xff) {
+ CHECK(ISC_R_RANGE);
+ }
+
+ switch (anchortype) {
+ case STATIC_KEY:
+ case INITIAL_KEY:
+ case TRUSTED:
+ dnskey.common.rdclass = dns_rdataclass_in;
+ dnskey.common.rdtype = dns_rdatatype_dnskey;
+ dnskey.mctx = NULL;
+
+ ISC_LINK_INIT(&dnskey.common, link);
+
+ dnskey.flags = (uint16_t)rdata1;
+ dnskey.protocol = (uint8_t)rdata2;
+ dnskey.algorithm = (uint8_t)rdata3;
+
+ datastr = cfg_obj_asstring(cfg_tuple_get(key, "data"));
+ CHECK(isc_base64_decodestring(datastr, &databuf));
+ isc_buffer_usedregion(&databuf, &r);
+ dnskey.datalen = r.length;
+ dnskey.data = r.base;
+
+ CHECK(dns_rdata_fromstruct(NULL, dnskey.common.rdclass,
+ dnskey.common.rdtype, &dnskey,
+ &rrdatabuf));
+ CHECK(dns_client_addtrustedkey(client, dns_rdataclass_in,
+ dns_rdatatype_dnskey, keyname,
+ &rrdatabuf));
+ break;
+ case INITIAL_DS:
+ case STATIC_DS:
+ ds.common.rdclass = dns_rdataclass_in;
+ ds.common.rdtype = dns_rdatatype_ds;
+ ds.mctx = NULL;
+
+ ISC_LINK_INIT(&ds.common, link);
+
+ ds.key_tag = (uint16_t)rdata1;
+ ds.algorithm = (uint8_t)rdata2;
+ ds.digest_type = (uint8_t)rdata3;
+
+ datastr = cfg_obj_asstring(cfg_tuple_get(key, "data"));
+ CHECK(isc_hex_decodestring(datastr, &databuf));
+ isc_buffer_usedregion(&databuf, &r);
+
+ switch (ds.digest_type) {
+ case DNS_DSDIGEST_SHA1:
+ if (r.length != ISC_SHA1_DIGESTLENGTH) {
+ CHECK(ISC_R_UNEXPECTEDEND);
+ }
+ break;
+ case DNS_DSDIGEST_SHA256:
+ if (r.length != ISC_SHA256_DIGESTLENGTH) {
+ CHECK(ISC_R_UNEXPECTEDEND);
+ }
+ break;
+ case DNS_DSDIGEST_SHA384:
+ if (r.length != ISC_SHA384_DIGESTLENGTH) {
+ CHECK(ISC_R_UNEXPECTEDEND);
+ }
+ break;
+ }
+
+ ds.length = r.length;
+ ds.digest = r.base;
+
+ CHECK(dns_rdata_fromstruct(NULL, ds.common.rdclass,
+ ds.common.rdtype, &ds, &rrdatabuf));
+ CHECK(dns_client_addtrustedkey(client, dns_rdataclass_in,
+ dns_rdatatype_ds, keyname,
+ &rrdatabuf));
+ }
+
+ num_keys++;
+
+cleanup:
+ if (result == DST_R_NOCRYPTO) {
+ cfg_obj_log(key, lctx, ISC_LOG_ERROR, "no crypto support");
+ } else if (result == DST_R_UNSUPPORTEDALG) {
+ cfg_obj_log(key, lctx, ISC_LOG_WARNING,
+ "skipping trusted key '%s': %s", keynamestr,
+ isc_result_totext(result));
+ result = ISC_R_SUCCESS;
+ } else if (result != ISC_R_SUCCESS) {
+ cfg_obj_log(key, lctx, ISC_LOG_ERROR,
+ "failed to add trusted key '%s': %s", keynamestr,
+ isc_result_totext(result));
+ result = ISC_R_FAILURE;
+ }
+
+ return (result);
+}
+
+static isc_result_t
+load_keys(const cfg_obj_t *keys, dns_client_t *client) {
+ const cfg_listelt_t *elt, *elt2;
+ const cfg_obj_t *key, *keylist;
+ isc_result_t result = ISC_R_SUCCESS;
+
+ for (elt = cfg_list_first(keys); elt != NULL; elt = cfg_list_next(elt))
+ {
+ keylist = cfg_listelt_value(elt);
+
+ for (elt2 = cfg_list_first(keylist); elt2 != NULL;
+ elt2 = cfg_list_next(elt2))
+ {
+ key = cfg_listelt_value(elt2);
+ CHECK(key_fromconfig(key, client));
+ }
+ }
+
+cleanup:
+ if (result == DST_R_NOCRYPTO) {
+ result = ISC_R_SUCCESS;
+ }
+ return (result);
+}
+
+static isc_result_t
+setup_dnsseckeys(dns_client_t *client) {
+ isc_result_t result;
+ cfg_parser_t *parser = NULL;
+ const cfg_obj_t *trusted_keys = NULL;
+ const cfg_obj_t *managed_keys = NULL;
+ const cfg_obj_t *trust_anchors = NULL;
+ cfg_obj_t *bindkeys = NULL;
+ const char *filename = anchorfile;
+
+ if (!root_validation) {
+ return (ISC_R_SUCCESS);
+ }
+
+ if (filename == NULL) {
+ filename = SYSCONFDIR "/bind.keys";
+ }
+
+ if (trust_anchor == NULL) {
+ trust_anchor = isc_mem_strdup(mctx, ".");
+ }
+
+ if (trust_anchor != NULL) {
+ CHECK(convert_name(&afn, &anchor_name, trust_anchor));
+ }
+
+ CHECK(cfg_parser_create(mctx, dns_lctx, &parser));
+
+ if (access(filename, R_OK) != 0) {
+ if (anchorfile != NULL) {
+ fatal("Unable to read key file '%s'", anchorfile);
+ }
+ } else {
+ result = cfg_parse_file(parser, filename, &cfg_type_bindkeys,
+ &bindkeys);
+ if (result != ISC_R_SUCCESS) {
+ if (anchorfile != NULL) {
+ fatal("Unable to load keys from '%s'",
+ anchorfile);
+ }
+ }
+ }
+
+ if (bindkeys == NULL) {
+ isc_buffer_t b;
+
+ isc_buffer_init(&b, anchortext, sizeof(anchortext) - 1);
+ isc_buffer_add(&b, sizeof(anchortext) - 1);
+ cfg_parser_reset(parser);
+ result = cfg_parse_buffer(parser, &b, NULL, 0,
+ &cfg_type_bindkeys, 0, &bindkeys);
+ if (result != ISC_R_SUCCESS) {
+ fatal("Unable to parse built-in keys");
+ }
+ }
+
+ INSIST(bindkeys != NULL);
+ cfg_map_get(bindkeys, "trusted-keys", &trusted_keys);
+ cfg_map_get(bindkeys, "managed-keys", &managed_keys);
+ cfg_map_get(bindkeys, "trust-anchors", &trust_anchors);
+
+ if (trusted_keys != NULL) {
+ CHECK(load_keys(trusted_keys, client));
+ }
+ if (managed_keys != NULL) {
+ CHECK(load_keys(managed_keys, client));
+ }
+ if (trust_anchors != NULL) {
+ CHECK(load_keys(trust_anchors, client));
+ }
+ result = ISC_R_SUCCESS;
+
+ if (num_keys == 0) {
+ fatal("No trusted keys were loaded");
+ }
+
+cleanup:
+ if (bindkeys != NULL) {
+ cfg_obj_destroy(parser, &bindkeys);
+ }
+ if (parser != NULL) {
+ cfg_parser_destroy(&parser);
+ }
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "setup_dnsseckeys: %s",
+ isc_result_totext(result));
+ }
+ return (result);
+}
+
+static isc_result_t
+addserver(dns_client_t *client) {
+ struct addrinfo hints, *res, *cur;
+ int gaierror;
+ struct in_addr in4;
+ struct in6_addr in6;
+ isc_sockaddr_t *sa;
+ isc_sockaddrlist_t servers;
+ uint32_t destport;
+ isc_result_t result;
+ dns_name_t *name = NULL;
+
+ result = parse_uint(&destport, port, 0xffff, "port");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse port number");
+ }
+
+ ISC_LIST_INIT(servers);
+
+ if (inet_pton(AF_INET, server, &in4) == 1) {
+ if (!use_ipv4) {
+ fatal("Use of IPv4 disabled by -6");
+ }
+ sa = isc_mem_get(mctx, sizeof(*sa));
+ ISC_LINK_INIT(sa, link);
+ isc_sockaddr_fromin(sa, &in4, destport);
+ ISC_LIST_APPEND(servers, sa, link);
+ } else if (inet_pton(AF_INET6, server, &in6) == 1) {
+ if (!use_ipv6) {
+ fatal("Use of IPv6 disabled by -4");
+ }
+ sa = isc_mem_get(mctx, sizeof(*sa));
+ ISC_LINK_INIT(sa, link);
+ isc_sockaddr_fromin6(sa, &in6, destport);
+ ISC_LIST_APPEND(servers, sa, link);
+ } else {
+ memset(&hints, 0, sizeof(hints));
+ if (!use_ipv6) {
+ hints.ai_family = AF_INET;
+ } else if (!use_ipv4) {
+ hints.ai_family = AF_INET6;
+ } else {
+ hints.ai_family = AF_UNSPEC;
+ }
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ gaierror = getaddrinfo(server, port, &hints, &res);
+ if (gaierror != 0) {
+ delv_log(ISC_LOG_ERROR, "getaddrinfo failed: %s",
+ gai_strerror(gaierror));
+ return (ISC_R_FAILURE);
+ }
+
+ result = ISC_R_SUCCESS;
+ for (cur = res; cur != NULL; cur = cur->ai_next) {
+ if (cur->ai_family != AF_INET &&
+ cur->ai_family != AF_INET6)
+ {
+ continue;
+ }
+ sa = isc_mem_get(mctx, sizeof(*sa));
+ memset(sa, 0, sizeof(*sa));
+ ISC_LINK_INIT(sa, link);
+ memmove(&sa->type, cur->ai_addr, cur->ai_addrlen);
+ sa->length = (unsigned int)cur->ai_addrlen;
+ ISC_LIST_APPEND(servers, sa, link);
+ }
+ freeaddrinfo(res);
+ CHECK(result);
+ }
+
+ CHECK(dns_client_setservers(client, dns_rdataclass_in, name, &servers));
+
+cleanup:
+ while (!ISC_LIST_EMPTY(servers)) {
+ sa = ISC_LIST_HEAD(servers);
+ ISC_LIST_UNLINK(servers, sa, link);
+ isc_mem_put(mctx, sa, sizeof(*sa));
+ }
+
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "addserver: %s",
+ isc_result_totext(result));
+ }
+
+ return (result);
+}
+
+static isc_result_t
+findserver(dns_client_t *client) {
+ isc_result_t result;
+ irs_resconf_t *resconf = NULL;
+ isc_sockaddrlist_t *nameservers;
+ isc_sockaddr_t *sa, *next;
+ uint32_t destport;
+
+ result = parse_uint(&destport, port, 0xffff, "port");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse port number");
+ }
+
+ result = irs_resconf_load(mctx, "/etc/resolv.conf", &resconf);
+ if (result != ISC_R_SUCCESS && result != ISC_R_FILENOTFOUND) {
+ delv_log(ISC_LOG_ERROR, "irs_resconf_load: %s",
+ isc_result_totext(result));
+ goto cleanup;
+ }
+
+ /* Get nameservers from resolv.conf */
+ nameservers = irs_resconf_getnameservers(resconf);
+ for (sa = ISC_LIST_HEAD(*nameservers); sa != NULL; sa = next) {
+ next = ISC_LIST_NEXT(sa, link);
+
+ /* Set destination port */
+ if (sa->type.sa.sa_family == AF_INET && use_ipv4) {
+ sa->type.sin.sin_port = htons(destport);
+ continue;
+ }
+ if (sa->type.sa.sa_family == AF_INET6 && use_ipv6) {
+ sa->type.sin6.sin6_port = htons(destport);
+ continue;
+ }
+
+ /* Incompatible protocol family */
+ ISC_LIST_UNLINK(*nameservers, sa, link);
+ isc_mem_put(mctx, sa, sizeof(*sa));
+ }
+
+ /* None found, use localhost */
+ if (ISC_LIST_EMPTY(*nameservers)) {
+ if (use_ipv4) {
+ struct in_addr localhost;
+ localhost.s_addr = htonl(INADDR_LOOPBACK);
+ sa = isc_mem_get(mctx, sizeof(*sa));
+ isc_sockaddr_fromin(sa, &localhost, destport);
+
+ ISC_LINK_INIT(sa, link);
+ ISC_LIST_APPEND(*nameservers, sa, link);
+ }
+
+ if (use_ipv6) {
+ sa = isc_mem_get(mctx, sizeof(*sa));
+ isc_sockaddr_fromin6(sa, &in6addr_loopback, destport);
+
+ ISC_LINK_INIT(sa, link);
+ ISC_LIST_APPEND(*nameservers, sa, link);
+ }
+ }
+
+ result = dns_client_setservers(client, dns_rdataclass_in, NULL,
+ nameservers);
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "dns_client_setservers: %s",
+ isc_result_totext(result));
+ }
+
+cleanup:
+ if (resconf != NULL) {
+ irs_resconf_destroy(&resconf);
+ }
+ return (result);
+}
+
+static isc_result_t
+parse_uint(uint32_t *uip, const char *value, uint32_t max, const char *desc) {
+ uint32_t n;
+ isc_result_t result = isc_parse_uint32(&n, value, 10);
+ if (result == ISC_R_SUCCESS && n > max) {
+ result = ISC_R_RANGE;
+ }
+ if (result != ISC_R_SUCCESS) {
+ printf("invalid %s '%s': %s\n", desc, value,
+ isc_result_totext(result));
+ return (result);
+ }
+ *uip = n;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+plus_option(char *option) {
+ isc_result_t result;
+ char *cmd, *value, *last = NULL;
+ bool state = true;
+
+ INSIST(option != NULL);
+
+ cmd = strtok_r(option, "=", &last);
+ if (cmd == NULL) {
+ printf(";; Invalid option %s\n", option);
+ return;
+ }
+ if (strncasecmp(cmd, "no", 2) == 0) {
+ cmd += 2;
+ state = false;
+ }
+
+ value = strtok_r(NULL, "\0", &last);
+
+#define FULLCHECK(A) \
+ do { \
+ size_t _l = strlen(cmd); \
+ if (_l >= sizeof(A) || strncasecmp(cmd, A, _l) != 0) \
+ goto invalid_option; \
+ } while (0)
+
+ switch (cmd[0]) {
+ case 'a': /* all */
+ FULLCHECK("all");
+ showcomments = state;
+ rrcomments = state;
+ showtrust = state;
+ break;
+ case 'c':
+ switch (cmd[1]) {
+ case 'd': /* cdflag */
+ FULLCHECK("cdflag");
+ cdflag = state;
+ break;
+ case 'l': /* class */
+ FULLCHECK("class");
+ noclass = !state;
+ break;
+ case 'o': /* comments */
+ FULLCHECK("comments");
+ showcomments = state;
+ break;
+ case 'r': /* crypto */
+ FULLCHECK("crypto");
+ nocrypto = !state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'd':
+ switch (cmd[1]) {
+ case 'l': /* dlv */
+ FULLCHECK("dlv");
+ if (state) {
+ fprintf(stderr, "Invalid option: "
+ "+dlv is obsolete\n");
+ exit(1);
+ }
+ break;
+ case 'n': /* dnssec */
+ FULLCHECK("dnssec");
+ showdnssec = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'm':
+ switch (cmd[1]) {
+ case 't': /* mtrace */
+ message_trace = state;
+ if (state) {
+ resolve_trace = state;
+ }
+ break;
+ case 'u': /* multiline */
+ FULLCHECK("multiline");
+ multiline = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'r':
+ switch (cmd[1]) {
+ case 'o': /* root */
+ FULLCHECK("root");
+ if (state && no_sigs) {
+ break;
+ }
+ root_validation = state;
+ if (value != NULL) {
+ trust_anchor = isc_mem_strdup(mctx, value);
+ }
+ break;
+ case 'r': /* rrcomments */
+ FULLCHECK("rrcomments");
+ rrcomments = state;
+ break;
+ case 't': /* rtrace */
+ FULLCHECK("rtrace");
+ resolve_trace = state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 's':
+ switch (cmd[1]) {
+ case 'h': /* short */
+ FULLCHECK("short");
+ short_form = state;
+ if (short_form) {
+ multiline = false;
+ showcomments = false;
+ showtrust = false;
+ showdnssec = false;
+ }
+ break;
+ case 'p': /* split */
+ FULLCHECK("split");
+ if (value != NULL && !state) {
+ goto invalid_option;
+ }
+ if (!state) {
+ splitwidth = 0;
+ break;
+ } else if (value == NULL) {
+ break;
+ }
+
+ result = parse_uint(&splitwidth, value, 1023, "split");
+ if (splitwidth % 4 != 0) {
+ splitwidth = ((splitwidth + 3) / 4) * 4;
+ warn("split must be a multiple of 4; "
+ "adjusting to %d",
+ splitwidth);
+ }
+ /*
+ * There is an adjustment done in the
+ * totext_<rrtype>() functions which causes
+ * splitwidth to shrink. This is okay when we're
+ * using the default width but incorrect in this
+ * case, so we correct for it
+ */
+ if (splitwidth) {
+ splitwidth += 3;
+ }
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse split");
+ }
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'u':
+ FULLCHECK("unknownformat");
+ print_unknown_format = state;
+ break;
+ case 't':
+ switch (cmd[1]) {
+ case 'c': /* tcp */
+ FULLCHECK("tcp");
+ use_tcp = state;
+ break;
+ case 'r': /* trust */
+ FULLCHECK("trust");
+ showtrust = state;
+ break;
+ case 't': /* ttl */
+ FULLCHECK("ttl");
+ nottl = !state;
+ break;
+ default:
+ goto invalid_option;
+ }
+ break;
+ case 'v': /* vtrace */
+ FULLCHECK("vtrace");
+ validator_trace = state;
+ if (state) {
+ resolve_trace = state;
+ }
+ break;
+ case 'y': /* yaml */
+ FULLCHECK("yaml");
+ yaml = state;
+ if (state) {
+ rrcomments = false;
+ }
+ break;
+ default:
+ invalid_option:
+ /*
+ * We can also add a "need_value:" case here if we ever
+ * add a plus-option that requires a specified value
+ */
+ fprintf(stderr, "Invalid option: +%s\n", option);
+ usage();
+ }
+ return;
+}
+
+/*
+ * options: "46a:b:c:d:himp:q:t:vx:";
+ */
+static const char *single_dash_opts = "46himv";
+static const char *dash_opts = "46abcdhimpqtvx";
+
+static bool
+dash_option(char *option, char *next, bool *open_type_class) {
+ char opt, *value;
+ isc_result_t result;
+ bool value_from_next;
+ isc_textregion_t tr;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ char textname[MAXNAME];
+ struct in_addr in4;
+ struct in6_addr in6;
+ in_port_t srcport;
+ uint32_t num;
+ char *hash;
+
+ while (strpbrk(option, single_dash_opts) == &option[0]) {
+ /*
+ * Since the -[46himv] options do not take an argument,
+ * account for them (in any number and/or combination)
+ * if they appear as the first character(s) of a q-opt.
+ */
+ opt = option[0];
+ switch (opt) {
+ case '4':
+ if (isc_net_probeipv4() != ISC_R_SUCCESS) {
+ fatal("IPv4 networking not available");
+ }
+ if (use_ipv6) {
+ isc_net_disableipv6();
+ use_ipv6 = false;
+ }
+ break;
+ case '6':
+ if (isc_net_probeipv6() != ISC_R_SUCCESS) {
+ fatal("IPv6 networking not available");
+ }
+ if (use_ipv4) {
+ isc_net_disableipv4();
+ use_ipv4 = false;
+ }
+ break;
+ case 'h':
+ usage();
+ exit(0);
+ case 'i':
+ no_sigs = true;
+ root_validation = false;
+ break;
+ case 'm':
+ /* handled in preparse_args() */
+ break;
+ case 'v':
+ fprintf(stderr, "delv %s\n", PACKAGE_VERSION);
+ exit(0);
+ default:
+ UNREACHABLE();
+ }
+ if (strlen(option) > 1U) {
+ option = &option[1];
+ } else {
+ return (false);
+ }
+ }
+ opt = option[0];
+ if (strlen(option) > 1U) {
+ value_from_next = false;
+ value = &option[1];
+ } else {
+ value_from_next = true;
+ value = next;
+ }
+ if (value == NULL) {
+ goto invalid_option;
+ }
+ switch (opt) {
+ case 'a':
+ anchorfile = isc_mem_strdup(mctx, value);
+ return (value_from_next);
+ case 'b':
+ hash = strchr(value, '#');
+ if (hash != NULL) {
+ result = parse_uint(&num, hash + 1, 0xffff, "port");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse port number");
+ }
+ srcport = num;
+ *hash = '\0';
+ } else {
+ srcport = 0;
+ }
+
+ if (inet_pton(AF_INET, value, &in4) == 1) {
+ if (srcaddr4 != NULL) {
+ fatal("Only one local address per family "
+ "can be specified\n");
+ }
+ isc_sockaddr_fromin(&a4, &in4, srcport);
+ srcaddr4 = &a4;
+ } else if (inet_pton(AF_INET6, value, &in6) == 1) {
+ if (srcaddr6 != NULL) {
+ fatal("Only one local address per family "
+ "can be specified\n");
+ }
+ isc_sockaddr_fromin6(&a6, &in6, srcport);
+ srcaddr6 = &a6;
+ } else {
+ if (hash != NULL) {
+ *hash = '#';
+ }
+ fatal("Invalid address %s", value);
+ }
+ if (hash != NULL) {
+ *hash = '#';
+ }
+ return (value_from_next);
+ case 'c':
+ if (classset) {
+ warn("extra query class");
+ }
+
+ *open_type_class = false;
+ tr.base = value;
+ tr.length = strlen(value);
+ result = dns_rdataclass_fromtext(&rdclass,
+ (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ classset = true;
+ } else if (rdclass != dns_rdataclass_in) {
+ warn("ignoring non-IN query class");
+ } else {
+ warn("ignoring invalid class");
+ }
+ return (value_from_next);
+ case 'd':
+ result = parse_uint(&num, value, 99, "debug level");
+ if (result != ISC_R_SUCCESS) {
+ fatal("Couldn't parse debug level");
+ }
+ loglevel = num;
+ return (value_from_next);
+ case 'p':
+ port = value;
+ return (value_from_next);
+ case 'q':
+ if (curqname != NULL) {
+ warn("extra query name");
+ isc_mem_free(mctx, curqname);
+ }
+ curqname = isc_mem_strdup(mctx, value);
+ return (value_from_next);
+ case 't':
+ *open_type_class = false;
+ tr.base = value;
+ tr.length = strlen(value);
+ result = dns_rdatatype_fromtext(&rdtype,
+ (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ if (typeset) {
+ warn("extra query type");
+ }
+ if (rdtype == dns_rdatatype_ixfr ||
+ rdtype == dns_rdatatype_axfr)
+ {
+ fatal("Transfer not supported");
+ }
+ qtype = rdtype;
+ typeset = true;
+ } else {
+ warn("ignoring invalid type");
+ }
+ return (value_from_next);
+ case 'x':
+ result = get_reverse(textname, sizeof(textname), value, false);
+ if (result == ISC_R_SUCCESS) {
+ if (curqname != NULL) {
+ isc_mem_free(mctx, curqname);
+ warn("extra query name");
+ }
+ curqname = isc_mem_strdup(mctx, textname);
+ if (typeset) {
+ warn("extra query type");
+ }
+ qtype = dns_rdatatype_ptr;
+ typeset = true;
+ } else {
+ fprintf(stderr, "Invalid IP address %s\n", value);
+ exit(1);
+ }
+ return (value_from_next);
+ invalid_option:
+ default:
+ fprintf(stderr, "Invalid option: -%s\n", option);
+ usage();
+ }
+ UNREACHABLE();
+ return (false);
+}
+
+/*
+ * Check for -m first to determine whether to enable
+ * memory debugging when setting up the memory context.
+ */
+static void
+preparse_args(int argc, char **argv) {
+ bool ipv4only = false, ipv6only = false;
+ char *option;
+
+ for (argc--, argv++; argc > 0; argc--, argv++) {
+ if (argv[0][0] != '-') {
+ continue;
+ }
+
+ option = &argv[0][1];
+ while (strpbrk(option, single_dash_opts) == &option[0]) {
+ switch (option[0]) {
+ case 'm':
+ 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;
+ }
+ option = &option[1];
+ }
+
+ if (strlen(option) == 0U) {
+ continue;
+ }
+
+ /* Look for dash value option. */
+ if (strpbrk(option, dash_opts) != &option[0] ||
+ strlen(option) > 1U)
+ {
+ /* Error or value in option. */
+ continue;
+ }
+
+ /* Dash value is next argument so we need to skip it. */
+ argc--;
+ argv++;
+
+ /* Handle missing argument */
+ if (argc == 0) {
+ break;
+ }
+ }
+}
+
+/*
+ * Argument parsing is based on dig, but simplified: only one
+ * QNAME/QCLASS/QTYPE tuple can be specified, and options have
+ * been removed that aren't applicable to delv. The interface
+ * should be familiar to dig users, however.
+ */
+static void
+parse_args(int argc, char **argv) {
+ isc_result_t result;
+ isc_textregion_t tr;
+ dns_rdatatype_t rdtype;
+ dns_rdataclass_t rdclass;
+ bool open_type_class = true;
+
+ for (; argc > 0; argc--, argv++) {
+ if (argv[0][0] == '@') {
+ server = &argv[0][1];
+ } else if (argv[0][0] == '+') {
+ plus_option(&argv[0][1]);
+ } else if (argv[0][0] == '-') {
+ if (argc <= 1) {
+ if (dash_option(&argv[0][1], NULL,
+ &open_type_class))
+ {
+ argc--;
+ argv++;
+ }
+ } else {
+ if (dash_option(&argv[0][1], argv[1],
+ &open_type_class))
+ {
+ argc--;
+ argv++;
+ }
+ }
+ } else {
+ /*
+ * Anything which isn't an option
+ */
+ if (open_type_class) {
+ tr.base = argv[0];
+ tr.length = strlen(argv[0]);
+ result = dns_rdatatype_fromtext(
+ &rdtype, (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ if (typeset) {
+ warn("extra query type");
+ }
+ if (rdtype == dns_rdatatype_ixfr ||
+ rdtype == dns_rdatatype_axfr)
+ {
+ fatal("Transfer not supported");
+ }
+ qtype = rdtype;
+ typeset = true;
+ continue;
+ }
+ result = dns_rdataclass_fromtext(
+ &rdclass, (isc_textregion_t *)&tr);
+ if (result == ISC_R_SUCCESS) {
+ if (classset) {
+ warn("extra query class");
+ } else if (rdclass != dns_rdataclass_in)
+ {
+ warn("ignoring non-IN "
+ "query class");
+ }
+ continue;
+ }
+ }
+
+ if (curqname == NULL) {
+ curqname = isc_mem_strdup(mctx, argv[0]);
+ }
+ }
+ }
+
+ /*
+ * If no qname or qtype specified, search for root/NS
+ * If no qtype specified, use A
+ */
+ if (!typeset) {
+ qtype = dns_rdatatype_a;
+ }
+
+ if (curqname == NULL) {
+ qname = isc_mem_strdup(mctx, ".");
+
+ if (!typeset) {
+ qtype = dns_rdatatype_ns;
+ }
+ } else {
+ qname = curqname;
+ }
+}
+
+static isc_result_t
+append_str(const char *text, int len, char **p, char *end) {
+ if (len > end - *p) {
+ return (ISC_R_NOSPACE);
+ }
+ memmove(*p, text, len);
+ *p += len;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+reverse_octets(const char *in, char **p, char *end) {
+ char *dot = strchr(in, '.');
+ int len;
+ if (dot != NULL) {
+ isc_result_t result;
+ result = reverse_octets(dot + 1, p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ result = append_str(".", 1, p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ len = (int)(dot - in);
+ } else {
+ len = strlen(in);
+ }
+ return (append_str(in, len, p, end));
+}
+
+static isc_result_t
+get_reverse(char *reverse, size_t len, char *value, bool strict) {
+ int r;
+ isc_result_t result;
+ isc_netaddr_t addr;
+
+ addr.family = AF_INET6;
+ r = inet_pton(AF_INET6, value, &addr.type.in6);
+ if (r > 0) {
+ /* This is a valid IPv6 address. */
+ dns_fixedname_t fname;
+ dns_name_t *name;
+ unsigned int options = 0;
+
+ name = dns_fixedname_initname(&fname);
+ result = dns_byaddr_createptrname(&addr, options, name);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ dns_name_format(name, reverse, (unsigned int)len);
+ return (ISC_R_SUCCESS);
+ } else {
+ /*
+ * Not a valid IPv6 address. Assume IPv4.
+ * If 'strict' is not set, construct the
+ * in-addr.arpa name by blindly reversing
+ * octets whether or not they look like integers,
+ * so that this can be used for RFC2317 names
+ * and such.
+ */
+ char *p = reverse;
+ char *end = reverse + len;
+ if (strict && inet_pton(AF_INET, value, &addr.type.in) != 1) {
+ return (DNS_R_BADDOTTEDQUAD);
+ }
+ result = reverse_octets(value, &p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ result = append_str(".in-addr.arpa.", 15, &p, end);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ return (ISC_R_SUCCESS);
+ }
+}
+
+int
+main(int argc, char *argv[]) {
+ dns_client_t *client = NULL;
+ isc_result_t result;
+ dns_fixedname_t qfn;
+ dns_name_t *query_name, *response_name;
+ char namestr[DNS_NAME_FORMATSIZE];
+ dns_rdataset_t *rdataset;
+ dns_namelist_t namelist;
+ unsigned int resopt;
+ isc_appctx_t *actx = NULL;
+ isc_nm_t *netmgr = NULL;
+ isc_taskmgr_t *taskmgr = NULL;
+ isc_timermgr_t *timermgr = NULL;
+ dns_master_style_t *style = NULL;
+ struct sigaction sa;
+
+ progname = argv[0];
+ preparse_args(argc, argv);
+
+ argc--;
+ argv++;
+
+ isc_mem_create(&mctx);
+
+ result = dst_lib_init(mctx, NULL);
+ if (result != ISC_R_SUCCESS) {
+ fatal("dst_lib_init failed: %d", result);
+ }
+
+ CHECK(isc_appctx_create(mctx, &actx));
+
+ isc_managers_create(mctx, 1, 0, &netmgr, &taskmgr, &timermgr);
+
+ parse_args(argc, argv);
+
+ CHECK(setup_style(&style));
+
+ setup_logging(stderr);
+
+ CHECK(isc_app_ctxstart(actx));
+
+ /* Unblock SIGINT if it's been blocked by isc_app_ctxstart() */
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+ if (sigfillset(&sa.sa_mask) != 0 || sigaction(SIGINT, &sa, NULL) < 0) {
+ fatal("Couldn't set up signal handler");
+ }
+
+ /* Create client */
+ result = dns_client_create(mctx, actx, taskmgr, netmgr, timermgr, 0,
+ &client, srcaddr4, srcaddr6);
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "dns_client_create: %s",
+ isc_result_totext(result));
+ goto cleanup;
+ }
+
+ /* Set the nameserver */
+ if (server != NULL) {
+ addserver(client);
+ } else {
+ findserver(client);
+ }
+
+ CHECK(setup_dnsseckeys(client));
+
+ /* Construct QNAME */
+ CHECK(convert_name(&qfn, &query_name, qname));
+
+ /* Set up resolution options */
+ resopt = DNS_CLIENTRESOPT_NOCDFLAG;
+ if (no_sigs) {
+ resopt |= DNS_CLIENTRESOPT_NODNSSEC;
+ }
+ if (!root_validation) {
+ resopt |= DNS_CLIENTRESOPT_NOVALIDATE;
+ }
+ if (cdflag) {
+ resopt &= ~DNS_CLIENTRESOPT_NOCDFLAG;
+ }
+ if (use_tcp) {
+ resopt |= DNS_CLIENTRESOPT_TCP;
+ }
+
+ /* Perform resolution */
+ ISC_LIST_INIT(namelist);
+ result = dns_client_resolve(client, query_name, dns_rdataclass_in,
+ qtype, resopt, &namelist);
+ if (result != ISC_R_SUCCESS && !yaml) {
+ delv_log(ISC_LOG_ERROR, "resolution failed: %s",
+ isc_result_totext(result));
+ }
+
+ if (yaml) {
+ printf("type: DELV_RESULT\n");
+ dns_name_format(query_name, namestr, sizeof(namestr));
+ printf("query_name: %s\n", namestr);
+ printf("status: %s\n", isc_result_totext(result));
+ printf("records:\n");
+ }
+
+ for (response_name = ISC_LIST_HEAD(namelist); response_name != NULL;
+ response_name = ISC_LIST_NEXT(response_name, link))
+ {
+ for (rdataset = ISC_LIST_HEAD(response_name->list);
+ rdataset != NULL; rdataset = ISC_LIST_NEXT(rdataset, link))
+ {
+ result = printdata(rdataset, response_name, style);
+ if (result != ISC_R_SUCCESS) {
+ delv_log(ISC_LOG_ERROR, "print data failed");
+ }
+ }
+ }
+
+ dns_client_freeresanswer(client, &namelist);
+
+cleanup:
+ if (trust_anchor != NULL) {
+ isc_mem_free(mctx, trust_anchor);
+ }
+ if (anchorfile != NULL) {
+ isc_mem_free(mctx, anchorfile);
+ }
+ if (qname != NULL) {
+ isc_mem_free(mctx, qname);
+ }
+ if (style != NULL) {
+ dns_master_styledestroy(&style, mctx);
+ }
+ if (client != NULL) {
+ dns_client_detach(&client);
+ }
+
+ isc_managers_destroy(&netmgr, &taskmgr, &timermgr);
+
+ if (actx != NULL) {
+ isc_appctx_destroy(&actx);
+ }
+ if (lctx != NULL) {
+ isc_log_destroy(&lctx);
+ }
+ isc_mem_detach(&mctx);
+
+ dst_lib_destroy();
+
+ return (0);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-03 18:07:21 +0000