--- /dev/null
+/*
+ * This file is part of the Sofia-SIP package
+ *
+ * Copyright (C) 2006 Nokia Corporation.
+ *
+ * Contact: Pekka Pessi <pekka.pessi@nokia.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+/**
+ * This is an example program for @b sresolv library in synchronous mode.
+ *
+ * @author Pekka Pessi <Pekka.Pessi@nokia.com>
+ *
+ * @date Original Created: Tue Jul 16 18:50:14 2002 ppessi
+ */
+
+/**@page sip-dig Resolve SIP URIs.
+ *
+ * @section sip_dig_synopsis Synopsis
+ * <tt>sip-dig [OPTIONS] uri...</tt>
+ *
+ * @section sip_dig_description Description
+ * The @em sip-dig utility resolves SIP URIs as described in @RFC3263. It
+ * queries NAPTR, SRV and A/AAAA records and prints out the resulting
+ * transport addresses.
+ *
+ * The default transports are: UDP, TCP, SCTP, TLS and TLS-SCTP. The SIPS
+ * URIs are resolved using only TLS transports, TLS and TLS-SCTP. If not
+ * otherwise indicated by NAPTR or SRV records, the sip-dig uses UDP and TCP
+ * as transports for SIP and TLS for SIPS URIs.
+ *
+ * The results are printed intended, with a preference followed by weight,
+ * then protocol name, port number and IP address in numeric format.
+ *
+ * @section sip_dig_options Command Line Options
+ * The @e sip-dig utility accepts following command line options:
+ * <dl>
+ * <dt>-p <em>protoname</em></dt>
+ * <dd>Use named transport protocol. The <em>protoname</em> can be either
+ * well-known, e.g., "udp", or it can specify NAPTR service and SRV
+ * identifier, e.g., "tls-udp/SIPS+D2U/_sips._udp.".
+ * </dd>
+ * <dt>--udp</dt>
+ * <dd>Use UDP transport protocol.
+ * </dd>
+ * <dt>--tcp</dt>
+ * <dd>Use TCP transport protocol.
+ * </dd>
+ * <dt>--tls</dt>
+ * <dd>Use TLS over TCP transport protocol.
+ * </dd>
+ * <dt>--sctp</dt>
+ * <dd>Use SCTP transport protocol.
+ * </dd>
+ * <dt>--tls-sctp</dt>
+ * <dd>Use TLS over SCTP transport protocol.
+ * </dd>
+ * <dt>--no-sctp</dt>
+ * <dd>Ignore SCTP or TLS-SCTP records in the list of default transports.
+ * This option has no effect if transport protocols has been explicitly
+ * listed.
+ * </dd>
+ * <dt>-4</dt>
+ * <dd>Query IP4 addresses (A records)
+ * </dd>
+ * <dt>-6</dt>
+ * <dd>Query IP6 addresses (AAAA records).
+ * </dd>
+ * <dt>-v</dt>
+ * <dd>Be verbatim.
+ * </dd>
+ * <dt></dt>
+ * <dd>
+ * </dd>
+ * </dl>
+ *
+ * @section sip_dig_return Return Codes
+ * <table>
+ * <tr><td>0<td>when successful (a 2XX-series response is received)
+ * <tr><td>1<td>when unsuccessful (a 3XX..6XX-series response is received)
+ * <tr><td>2<td>initialization failure
+ * </table>
+ *
+ * @section sip_dig_examples Examples
+ *
+ * Resolve sip:openlaboratory.net, prefer TLS over TCP, TCP over UDP:
+ * @code
+ * $ sip-dig --tls --tcp --udp sip:openlaboratory.net
+ * 1 0.333 tls 5061 212.213.221.127
+ * 2 0.333 tcp 5060 212.213.221.127
+ * 3 0.333 udp 5060 212.213.221.127
+ * @endcode
+ *
+ * Resolve sips:example.net with TLS over SCTP (TLS-SCTP) and TLS:
+ * @code
+ * $ sip-dig -p tls-sctp --tls sips:example.net
+ * 1 0.500 tls-udp 5061 172.21.55.26
+ * 2 0.500 tls 5061 172.21.55.26
+ * @endcode
+ *
+ * @section sip_dig_environment Environment
+ * #SRESOLV_DEBUG, SRESOLV_CONF
+ *
+ * @section sip_dig_bugs Reporting Bugs
+ * Report bugs to <sofia-sip-devel@lists.sourceforge.net>.
+ *
+ * @section sip_dig_author Author
+ * Written by Pekka Pessi <pekka -dot pessi -at- nokia -dot- com>
+ *
+ * @section sip_dig_copyright Copyright
+ * Copyright (C) 2006 Nokia Corporation.
+ *
+ * This program is free software; see the source for copying conditions.
+ * There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE.
+ */
+
+
+#include "switch.h"
+#include "../../config.h"
+
+#include "sofia-sip/su.h"
+
+#include "sofia-resolv/sres.h"
+#include "sofia-resolv/sres_record.h"
+
+#include "sofia-sip/url.h"
+#include "sofia-sip/su_alloc.h"
+#include "sofia-sip/su_string.h"
+#include "sofia-sip/hostdomain.h"
+
+char const name[] = "sip-dig";
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+enum { N_TPORT = 16 };
+
+struct transport { char const *name, *service, *srv; };
+
+struct dig {
+ sres_resolver_t *sres;
+
+ unsigned preference, ip4, ip6, sips, print;
+
+ struct transport tports[N_TPORT + 1];
+};
+
+int dig_naptr(struct dig *dig, char const *host, double weight, switch_stream_handle_t *stream);
+
+int dig_all_srvs(struct dig *dig, char const *tport, char const *host,
+ double weight, switch_stream_handle_t *stream);
+
+int dig_srv(struct dig *dig, char const *tport, char const *host,
+ double weight, switch_stream_handle_t *stream);
+
+int dig_srv_at(struct dig *dig,
+ char const *tport, sres_record_t **answers,
+ double weight, int pweight,
+ int priority, switch_stream_handle_t *stream);
+
+int dig_addr(struct dig *dig,
+ char const *tport, char const *host, char const *port,
+ double weight, switch_stream_handle_t *stream);
+
+void print_addr_results(struct transport const *tports,
+ char const *tport, char const *tport2,
+ sres_record_t **answers, int type, int af,
+ char const *port,
+ double weight, int preference, switch_stream_handle_t *stream);
+
+void print_result(char const *addr, char const *port, char const *tport,
+ double weight,
+ unsigned preference,
+ switch_stream_handle_t *stream);
+
+int prepare_transport(struct dig *dig, char const *tport);
+
+int count_transports(struct dig *dig,
+ char const *tp1,
+ char const *tp2);
+
+void _usage(int exitcode, switch_stream_handle_t *stream)
+{
+ stream->write_function(stream, "%s", "usage: sofia_dig [OPTIONS] [@dnsserver] uri\n");
+}
+
+#define usage(_x) _usage(_x, stream); goto fail
+
+switch_status_t sip_dig_function(_In_opt_z_ const char *cmd, _In_opt_ switch_core_session_t *session, _In_ switch_stream_handle_t *stream)
+
+{
+ int exitcode = 0;
+ int o_sctp = 1, o_tls_sctp = 1, o_verbatim = 1;
+ int family = 0, multiple = 0;
+ char const *dnsserver = NULL;
+ char const *string;
+ url_t *uri = NULL;
+
+ char const *host;
+ char const *port;
+ char *transport = NULL, tport[32];
+ int argc;
+ char *argv_[25] = { 0 };
+ char *mycmd = NULL;
+ char **argv;
+ struct dig dig[1] = {{ NULL }};
+ su_home_t *home = NULL;
+ int xml = 0;
+
+ home = su_home_new(sizeof(*home));
+
+ argv = argv_;
+ argv++;
+
+ if (!cmd) {
+ {usage(1);}
+ }
+
+ mycmd = strdup(cmd);
+
+ argc = switch_separate_string(mycmd, ' ', argv, (sizeof(argv_) / sizeof(argv_[0])) - 1);
+ argv = argv_;
+
+ if (!strcasecmp(argv[1], "xml")) {
+ switch_event_add_header_string(stream->param_event, SWITCH_STACK_BOTTOM, "xml", "true");
+ argv++;
+ xml++;
+ }
+
+ argv[0] = "sofia_dig";
+
+
+ //if (su_init() != 0)
+ //return -1;
+
+ while (argv[1] && argv[1][0] == '-') {
+ if (strcmp(argv[1], "-v") == 0)
+ o_verbatim++;
+ else if (strcmp(argv[1], "-6") == 0)
+ dig->ip6 = ++family;
+ else if (strcmp(argv[1], "-4") == 0)
+ dig->ip4 = ++family;
+ else if (strncmp(argv[1], "-p", 2) == 0) {
+ char const *proto;
+
+ if (argv[1][2] == '=')
+ proto = argv[1] + 3;
+ else if (argv[1][2])
+ proto = argv[1] + 2;
+ else
+ proto = argv++[2];
+
+ if (proto == NULL)
+ {usage(2);}
+
+ if (prepare_transport(dig, proto) < 0) {
+ goto fail;
+ }
+ }
+ else if (strcmp(argv[1], "--udp") == 0)
+ prepare_transport(dig, "udp");
+ else if (strcmp(argv[1], "--tcp") == 0)
+ prepare_transport(dig, "tcp");
+ else if (strcmp(argv[1], "--tls") == 0)
+ prepare_transport(dig, "tls");
+ else if (strcmp(argv[1], "--sctp") == 0)
+ prepare_transport(dig, "sctp");
+ else if (strcmp(argv[1], "--tls-sctp") == 0)
+ prepare_transport(dig, "tls-sctp");
+ else if (strcmp(argv[1], "--tls-udp") == 0)
+ prepare_transport(dig, "tls-udp");
+ else if (strcmp(argv[1], "--no-sctp") == 0)
+ o_sctp = 0, o_tls_sctp = 0;
+ else if (strcmp(argv[1], "--help") == 0)
+ {usage(0);}
+ else if (strcmp(argv[1], "-h") == 0)
+ {usage(0);}
+ else if (strcmp(argv[1], "-?") == 0)
+ {usage(0);}
+ else if (strcmp(argv++[1], "-") == 0)
+ break;
+ else
+ {usage(2);}
+ argv++;
+ }
+
+
+ if (xml) {
+ stream->write_function(stream, "%s", "<routes>\n");
+ } else {
+ stream->write_function(stream, "%10s\t%10s\t%10s\t%10s\t%10s\n", "Preference", "Weight", "Transport", "Port", "Address");
+ stream->write_function(stream, "================================================================================\n");
+ }
+
+ if (!family)
+ dig->ip4 = 1, dig->ip6 = 2;
+
+ if (argv[1] && argv[1][0] == '@')
+ dnsserver = argv++[1] + 1;
+
+
+
+ if (!argv[1])
+ {usage(2);}
+
+
+ multiple = argv[1] && argv[2];
+
+ if (!count_transports(dig, NULL, NULL)) {
+ prepare_transport(dig, "udp");
+ prepare_transport(dig, "tcp");
+ if (o_sctp)
+ prepare_transport(dig, "sctp");
+ prepare_transport(dig, "tls");
+ if (o_tls_sctp)
+ prepare_transport(dig, "tls-sctp");
+ }
+
+ dig->sres = sres_resolver_new(getenv("SRESOLV_CONF"));
+ if (!dig->sres)
+ {usage(1);}
+
+ for (; (string = argv[1]); argv++) {
+ if (multiple)
+ stream->write_function(stream, "%s", string);
+
+ uri = url_hdup(home, (void *)string);
+
+ if (uri && uri->url_type == url_unknown)
+ url_sanitize(uri);
+
+ if (uri && uri->url_type == url_any)
+ continue;
+
+ if (!uri || (uri->url_type != url_sip && uri->url_type != url_sips)) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s: invalid uri\n", string);
+ exitcode = 1;
+ continue;
+ }
+
+ port = url_port(uri);
+ if (port && !port[0]) port = NULL;
+ if (url_param(uri->url_params, "transport=", tport, sizeof tport) > 0)
+ transport = tport;
+
+ host = uri->url_host;
+
+ if (host_is_ip_address(host)) {
+ if (transport) {
+ print_result(host, port, transport, 1.0, 1, stream);
+ }
+ else if (uri->url_type == url_sips) {
+ print_result(host, port, "tls", 1.0, 1, stream);
+ }
+ else {
+ print_result(host, port, "udp", 1.0, 1, stream);
+ print_result(host, port, "tcp", 1.0, 2, stream);
+ }
+ continue;
+ }
+
+ if (!host_is_domain(host)) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s: invalid host\n", string);
+ exitcode = 1;
+ continue;
+ }
+
+ dig->sips = uri->url_type == url_sips;
+ dig->preference = 1;
+
+ if (!port && !transport && dig_naptr(dig, host, 1.0, stream))
+ continue /* resolved naptr */;
+ else if (!port && dig_all_srvs(dig, transport, host, 1.0, stream))
+ continue /* resolved srv */;
+ else if (dig_addr(dig, transport, host, port, 1.0, stream))
+ continue /* resolved a/aaaa */;
+
+ stream->write_function(stream, "-ERR: %s: not found\n", string);
+ exitcode = 1;
+ }
+
+ if (xml) {
+ stream->write_function(stream, "%s", "</routes>\n");
+ }
+
+
+ fail:
+ su_home_unref(home);
+ sres_resolver_unref(dig->sres);
+ switch_safe_free(mycmd);
+
+ return SWITCH_STATUS_SUCCESS;
+}
+
+
+int transport_is_secure(char const *tportname)
+{
+ return su_casenmatch(tportname, "tls", 3);
+}
+
+int prepare_transport(struct dig *dig, char const *tport)
+{
+ struct transport *tports = dig->tports;
+ int j;
+
+ for (j = 0; j < N_TPORT; j++) {
+ if (!tports[j].name)
+ break;
+ if (su_casematch(tports[j].name, tport))
+ return 1;
+ }
+
+ if (j == N_TPORT)
+ return 0;
+
+ if (strchr(tport, '/')) {
+ char *service = strchr(tport, '/');
+ char *srv = strchr(service + 1, '/');
+
+ if (!srv || srv[strlen(srv) - 1] != '.') {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s: invalid transport specifier \"%s\"\n"
+
+ "\tspecifier should have name/service/srv-id\n"
+ "\twhere name is protocol name (e.g, \"tls-udp\")\n"
+ "\t service specifies service as per RFC 2915 (e.g., \"SIPS+D2U\")\n"
+ "\t srv-id is prefix for SRV lookup (e.g., \"_sips._udp.\")\n%s",
+ name,
+ tport,
+ srv ? "\t and it should end with a dot \".\"\n" : "");
+
+ return -1;
+ }
+
+ *service++ = '\0', *srv++ = '\0';
+
+ tports[j].name = tport,
+ tports[j].service = service;
+ tports[j].srv = srv;
+ }
+ else if (su_casematch(tport, "udp")) {
+ tports[j].name = "udp";
+ tports[j].service = "SIP+D2U";
+ tports[j].srv = "_sip._udp.";
+ }
+ else if (su_casematch(tport, "tcp")) {
+ tports[j].name = "tcp";
+ tports[j].service = "SIP+D2T";
+ tports[j].srv = "_sip._tcp.";
+ }
+ else if (su_casematch(tport, "tls")) {
+ tports[j].name = "tls";
+ tports[j].service = "SIPS+D2T";
+ tports[j].srv = "_sips._tcp.";
+ }
+ else if (su_casematch(tport, "sctp")) {
+ tports[j].name = "sctp";
+ tports[j].service = "SIP+D2S";
+ tports[j].srv = "_sip._sctp.";
+ }
+ else if (su_casematch(tport, "tls-sctp")) {
+ tports[j].name = "tls-sctp";
+ tports[j].service = "SIPS+D2S";
+ tports[j].srv = "_sips._sctp.";
+ }
+ else {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s: unknown transport \"%s\"\n", name, tport);
+ return -1;
+ }
+
+ j++;
+
+ tports[j].service = tports[j].srv = tports[j].name = NULL;
+
+ return 1;
+}
+
+int
+count_transports(struct dig *dig,
+ char const *tport,
+ char const *tport2)
+{
+
+ int i, tcount = 0;
+ struct transport const *tports = dig->tports;
+
+ for (i = 0; tports[i].name; i++) {
+ if (dig->sips && !transport_is_secure(tports[i].name))
+ continue;
+ if (!tport || su_casematch(tport, tports[i].name))
+ tcount++;
+ else if (tport2 && su_casematch(tport2, tports[i].name))
+ tcount++;
+ }
+
+ return tcount;
+}
+
+struct transport const *
+transport_by_service(struct transport const *tports, char const *s)
+{
+ int i;
+
+ for (i = 0; tports[i].name; i++) {
+ if (su_casematch(tports[i].service, s))
+ return tports + i;
+ }
+
+ return NULL;
+}
+
+int dig_naptr(struct dig *dig,
+ char const *host,
+ double weight,
+ switch_stream_handle_t *stream)
+{
+ sres_record_t **answers = NULL;
+ struct transport const *tp;
+ int i, error;
+ int order = 0, count = 0, nacount = 0, scount = 0;
+
+ error = sres_blocking_query(dig->sres, sres_type_naptr, host, 0, &answers);
+ if (error < 0)
+ return 0;
+
+ /* Sort by priority */
+ sres_sort_answers(dig->sres, answers);
+
+ /* Count number of matching naptrs */
+ for (i = 0; answers[i]; i++) {
+ sres_naptr_record_t const *na = answers[i]->sr_naptr;
+
+ if (na->na_record->r_type != sres_type_naptr || na->na_record->r_status)
+ continue;
+
+ if (dig->print)
+ stream->write_function(stream, "%s\n\t%d IN NAPTR %u %u \"%s\" \"%s\" \"%s\" %s\n",
+ na->na_record->r_name, na->na_record->r_ttl,
+ na->na_order, na->na_prefer,
+ na->na_flags, na->na_services,
+ na->na_regexp, na->na_replace);
+
+ if (!su_casematch(na->na_flags, "s") && !su_casematch(na->na_flags, "a"))
+ continue;
+
+ if (nacount && order != na->na_order)
+ continue;
+
+ if (dig->sips && !su_casenmatch(na->na_services, "SIPS+", 5))
+ continue;
+
+ if (!transport_by_service(dig->tports, na->na_services))
+ continue;
+
+ order = na->na_order, nacount++;
+ }
+
+ if (nacount == 0) {
+ sres_free_answers(dig->sres, answers);
+ return 0;
+ }
+
+ for (i = 0; answers[i]; i++) {
+ sres_naptr_record_t const *na = answers[i]->sr_naptr;
+
+ if (na->na_record->r_type != sres_type_naptr || na->na_record->r_status)
+ continue;
+ if (order != na->na_order)
+ continue;
+ if (!su_casematch(na->na_flags, "s") && !su_casematch(na->na_flags, "a"))
+ continue;
+ if (dig->sips && !su_casenmatch(na->na_services, "SIPS+", 5))
+ continue;
+
+ tp = transport_by_service(dig->tports, na->na_services);
+ if (!tp)
+ continue;
+
+ if (su_casematch(na->na_flags, "s")) {
+ scount = dig_srv(dig, tp->name, na->na_replace, weight / nacount, stream);
+ }
+ else if (su_casematch(na->na_flags, "a")) {
+ scount = dig_addr(dig, tp->name, na->na_replace, NULL, weight / nacount, stream);
+ }
+ else
+ scount = 0;
+
+ count += scount;
+ }
+
+ return count;
+}
+
+int dig_all_srvs(struct dig *dig,
+ char const *tport,
+ char const *host,
+ double weight,
+ switch_stream_handle_t *stream)
+{
+ int i, j, n;
+ int tcount, count = 0, scount;
+ char *domain;
+
+ struct {
+ char const *proto; sres_record_t **answers;
+ } srvs[N_TPORT + 1] = {{ NULL }};
+
+ tcount = count_transports(dig, tport, NULL);
+ if (!tcount)
+ return 0;
+
+ for (i = 0, n = 0; dig->tports[i].name; i++) {
+ if (tport && !su_casematch(dig->tports[i].name, tport))
+ continue;
+
+ if (dig->sips && !transport_is_secure(dig->tports[i].name))
+ continue;
+
+ domain = su_strcat(NULL, dig->tports[i].srv, host);
+
+ if (domain) {
+ if (sres_blocking_query(dig->sres, sres_type_srv, domain, 0,
+ &srvs[n].answers) >= 0) {
+ srvs[n++].proto = dig->tports[i].name;
+ }
+ free(domain);
+ }
+ }
+
+ if (n == 0)
+ return 0;
+
+ for (i = 0; i < n; i++) {
+ unsigned priority = 0, pweight = 0, m = 0;
+ sres_record_t **answers = srvs[i].answers;
+ char const *tport = srvs[i].proto;
+
+ for (j = 0; answers[j]; j++) {
+ sres_srv_record_t const *srv = answers[j]->sr_srv;
+
+ if (srv->srv_record->r_type != sres_type_srv)
+ continue;
+ if (srv->srv_record->r_status != 0)
+ continue;
+
+ if (srv->srv_priority != priority && pweight != 0) {
+ scount = dig_srv_at(dig, tport, answers, weight / n, pweight,
+ priority, stream);
+ if (scount) dig->preference++;
+ count += scount;
+ pweight = 0, m = 0;
+ }
+
+ priority = srv->srv_priority, pweight += srv->srv_weight, m++;
+ }
+
+ if (m) {
+ scount = dig_srv_at(dig, tport, answers, weight / n, pweight, priority, stream);
+ if (scount)
+ dig->preference++;
+ count += scount;
+ }
+ }
+
+ return count;
+}
+
+int dig_srv(struct dig *dig,
+ char const *tport,
+ char const *domain,
+ double weight,
+ switch_stream_handle_t *stream)
+{
+ sres_record_t **answers = NULL;
+ int j, n, error;
+ int count = 0, scount = 0;
+
+ uint32_t priority, pweight;
+
+ assert(tport && domain);
+
+ error = sres_blocking_query(dig->sres, sres_type_srv, domain, 0, &answers);
+ if (error < 0)
+ return 0;
+
+ /* Sort by priority */
+ sres_sort_answers(dig->sres, answers);
+
+ priority = 0; pweight = 0; n = 0;
+
+ for (j = 0; answers[j]; j++) {
+ sres_srv_record_t const *srv = answers[j]->sr_srv;
+
+ if (srv->srv_record->r_type != sres_type_srv)
+ continue;
+ if (srv->srv_record->r_status != 0)
+ continue;
+
+ if (srv->srv_priority != priority && pweight != 0) {
+ scount = dig_srv_at(dig, tport, answers, weight, pweight,
+ priority, stream);
+ if (scount) dig->preference++;
+ count += scount;
+ pweight = 0, n = 0;
+ }
+
+ priority = srv->srv_priority, pweight += srv->srv_weight, n++;
+ }
+
+ if (n) {
+ scount = dig_srv_at(dig, tport, answers, weight, pweight, priority, stream);
+ if (scount) dig->preference++;
+ count += scount;
+ }
+
+ sres_free_answers(dig->sres, answers);
+
+ return count;
+}
+
+int dig_srv_at(struct dig *dig,
+ char const *tport,
+ sres_record_t **answers,
+ double weight, int pweight,
+ int priority,
+ switch_stream_handle_t *stream)
+{
+ int count = 0;
+ int i;
+ char port[8];
+
+ if (pweight == 0)
+ pweight = 1;
+
+ for (i = 0; answers[i]; i++) {
+ sres_srv_record_t const *srv = answers[i]->sr_srv;
+ if (srv->srv_record->r_type != sres_type_srv)
+ continue;
+ if (srv->srv_record->r_status != 0)
+ continue;
+ if (srv->srv_priority != priority)
+ continue;
+ snprintf(port, sizeof port, "%u", srv->srv_port);
+
+ count += dig_addr(dig, tport, srv->srv_target, port,
+ weight * srv->srv_weight / pweight, stream);
+ }
+
+ return count;
+}
+
+int dig_addr(struct dig *dig,
+ char const *tport,
+ char const *host,
+ char const *port,
+ double weight,
+ switch_stream_handle_t *stream)
+{
+ int error, i;
+ char const *tport2 = NULL;
+ sres_record_t **answers1 = NULL, **answers2 = NULL;
+ unsigned count1 = 0, count2 = 0, tcount = 0;
+ int type1 = 0, type2 = 0, family1 = 0, family2 = 0;
+
+ if (dig->ip6 > dig->ip4) {
+ type1 = sres_type_aaaa, family1 = AF_INET6;
+ if (dig->ip4)
+ type2 = sres_type_a, family2 = AF_INET;
+ }
+ else {
+ type1 = sres_type_a, family1 = AF_INET;
+ if (dig->ip6)
+ type2 = sres_type_aaaa, family2 = AF_INET6;
+ }
+
+ if (tport == NULL) {
+ if (dig->sips)
+ tport = "tls";
+ else
+ tport = "udp", tport2 = "tcp";
+ }
+
+ tcount = count_transports(dig, tport, tport2);
+ if (!tcount)
+ return 0;
+
+ if (type1) {
+ error = sres_blocking_query(dig->sres, type1, host, 0, &answers1);
+ if (error >= 0)
+ for (i = 0; answers1[i]; i++) {
+ sres_common_t *r = answers1[i]->sr_record;
+ count1 += r->r_type == type1 && r->r_status == 0;
+ }
+ }
+
+ if (type2) {
+ error = sres_blocking_query(dig->sres, type2, host, 0, &answers2);
+ if (error >= 0)
+ for (i = 0; answers2[i]; i++) {
+ sres_common_t *r = answers2[i]->sr_record;
+ count2 += r->r_type == type2 && r->r_status == 0;
+ }
+ }
+
+ if (count1 + count2) {
+ double w = weight / (count1 + count2) / tcount;
+
+ if (count1)
+ print_addr_results(dig->tports, tport, tport2,
+ answers1, type1, family1, port,
+ w, dig->preference, stream);
+ if (count2)
+ print_addr_results(dig->tports, tport, tport2,
+ answers2, type2, family2, port,
+ w, dig->preference, stream);
+ }
+
+ sres_free_answers(dig->sres, answers1);
+ sres_free_answers(dig->sres, answers2);
+
+ return count1 + count2;
+}
+
+void
+print_addr_results(struct transport const *tports,
+ char const *tport, char const *tport2,
+ sres_record_t **answers, int type, int af,
+ char const *port,
+ double weight, int preference, switch_stream_handle_t *stream)
+{
+ int i, j;
+ char addr[64];
+
+ for (i = 0; answers[i]; i++) {
+ if (answers[i]->sr_record->r_type != type)
+ continue;
+ if (answers[i]->sr_record->r_status != 0)
+ continue;
+
+ su_inet_ntop(af, &answers[i]->sr_a->a_addr, addr, sizeof addr);
+
+ for (j = 0; tports[j].name; j++) {
+ if (su_casematch(tport, tports[j].name))
+ print_result(addr, port, tport, weight, preference, stream);
+ if (su_casematch(tport2, tports[j].name))
+ print_result(addr, port, tport2, weight, preference, stream);
+ }
+ }
+}
+
+void print_result(char const *addr,
+ char const *port,
+ char const *tport,
+ double weight,
+ unsigned preference,
+ switch_stream_handle_t *stream)
+{
+ int xml = switch_true(switch_event_get_header(stream->param_event, "xml"));
+
+ if (!port || !port[0])
+ port = transport_is_secure(tport) ? "5061" : "5060";
+
+ if (xml) {
+ stream->write_function(stream,
+ " <route>\n"
+ " <preference>%u</preference>\n"
+ " <weight>%.3f</weight>\n"
+ " <transport>%s</transport>\n"
+ " <port>%s</port>\n"
+ " <address>%s</address>\n"
+ " </route>\n",
+ preference, weight, tport, port, addr);
+ } else {
+ stream->write_function(stream, "%10u\t%10.3f\t%10s\t%10s\t%10s\n", preference, weight, tport, port, addr);
+ }
+}
+
+
projects / thirdparty / freeswitch.git / commitdiff
