* #27232: jni: added pjproject checkout as regular git content
We will remove it once the next release of pjsip (with Android support)
comes out and is merged into SFLphone.
diff --git a/jni/pjproject-android/.svn/pristine/04/044b838547642149891b30dbcdebb15939fc6840.svn-base b/jni/pjproject-android/.svn/pristine/04/044b838547642149891b30dbcdebb15939fc6840.svn-base
new file mode 100644
index 0000000..609c56e
--- /dev/null
+++ b/jni/pjproject-android/.svn/pristine/04/044b838547642149891b30dbcdebb15939fc6840.svn-base
@@ -0,0 +1,674 @@
+/* $Id$ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <pjlib-util/srv_resolver.h>
+#include <pjlib-util/errno.h>
+#include <pj/array.h>
+#include <pj/assert.h>
+#include <pj/log.h>
+#include <pj/os.h>
+#include <pj/pool.h>
+#include <pj/rand.h>
+#include <pj/string.h>
+
+
+#define THIS_FILE "srv_resolver.c"
+
+#define ADDR_MAX_COUNT PJ_DNS_MAX_IP_IN_A_REC
+
+struct common
+{
+ pj_dns_type type; /**< Type of this structure.*/
+};
+
+struct srv_target
+{
+ struct common common;
+ pj_dns_srv_async_query *parent;
+ pj_str_t target_name;
+ pj_dns_async_query *q_a;
+ char target_buf[PJ_MAX_HOSTNAME];
+ pj_str_t cname;
+ char cname_buf[PJ_MAX_HOSTNAME];
+ unsigned port;
+ unsigned priority;
+ unsigned weight;
+ unsigned sum;
+ unsigned addr_cnt;
+ pj_in_addr addr[ADDR_MAX_COUNT];
+};
+
+struct pj_dns_srv_async_query
+{
+ struct common common;
+ char *objname;
+
+ pj_dns_type dns_state; /**< DNS type being resolved. */
+ pj_dns_resolver *resolver; /**< Resolver SIP instance. */
+ void *token;
+ pj_dns_async_query *q_srv;
+ pj_dns_srv_resolver_cb *cb;
+ pj_status_t last_error;
+
+ /* Original request: */
+ unsigned option;
+ pj_str_t full_name;
+ pj_str_t domain_part;
+ pj_uint16_t def_port;
+
+ /* SRV records and their resolved IP addresses: */
+ unsigned srv_cnt;
+ struct srv_target srv[PJ_DNS_SRV_MAX_ADDR];
+
+ /* Number of hosts in SRV records that the IP address has been resolved */
+ unsigned host_resolved;
+
+};
+
+
+/* Async resolver callback, forward decl. */
+static void dns_callback(void *user_data,
+ pj_status_t status,
+ pj_dns_parsed_packet *pkt);
+
+
+
+/*
+ * The public API to invoke DNS SRV resolution.
+ */
+PJ_DEF(pj_status_t) pj_dns_srv_resolve( const pj_str_t *domain_name,
+ const pj_str_t *res_name,
+ unsigned def_port,
+ pj_pool_t *pool,
+ pj_dns_resolver *resolver,
+ unsigned option,
+ void *token,
+ pj_dns_srv_resolver_cb *cb,
+ pj_dns_srv_async_query **p_query)
+{
+ pj_size_t len;
+ pj_str_t target_name;
+ pj_dns_srv_async_query *query_job;
+ pj_status_t status;
+
+ PJ_ASSERT_RETURN(domain_name && domain_name->slen &&
+ res_name && res_name->slen &&
+ pool && resolver && cb, PJ_EINVAL);
+
+ /* Build full name */
+ len = domain_name->slen + res_name->slen + 2;
+ target_name.ptr = (char*) pj_pool_alloc(pool, len);
+ pj_strcpy(&target_name, res_name);
+ if (res_name->ptr[res_name->slen-1] != '.')
+ pj_strcat2(&target_name, ".");
+ len = target_name.slen;
+ pj_strcat(&target_name, domain_name);
+ target_name.ptr[target_name.slen] = '\0';
+
+
+ /* Build the query_job state */
+ query_job = PJ_POOL_ZALLOC_T(pool, pj_dns_srv_async_query);
+ query_job->common.type = PJ_DNS_TYPE_SRV;
+ query_job->objname = target_name.ptr;
+ query_job->resolver = resolver;
+ query_job->token = token;
+ query_job->cb = cb;
+ query_job->option = option;
+ query_job->full_name = target_name;
+ query_job->domain_part.ptr = target_name.ptr + len;
+ query_job->domain_part.slen = target_name.slen - len;
+ query_job->def_port = (pj_uint16_t)def_port;
+
+ /* Start the asynchronous query_job */
+
+ query_job->dns_state = PJ_DNS_TYPE_SRV;
+
+ PJ_LOG(5, (query_job->objname,
+ "Starting async DNS %s query_job: target=%.*s:%d",
+ pj_dns_get_type_name(query_job->dns_state),
+ (int)target_name.slen, target_name.ptr,
+ def_port));
+
+ status = pj_dns_resolver_start_query(resolver, &target_name,
+ query_job->dns_state, 0,
+ &dns_callback,
+ query_job, &query_job->q_srv);
+ if (status==PJ_SUCCESS && p_query)
+ *p_query = query_job;
+
+ return status;
+}
+
+
+/*
+ * Cancel pending query.
+ */
+PJ_DEF(pj_status_t) pj_dns_srv_cancel_query(pj_dns_srv_async_query *query,
+ pj_bool_t notify)
+{
+ pj_bool_t has_pending = PJ_FALSE;
+ unsigned i;
+
+ if (query->q_srv) {
+ pj_dns_resolver_cancel_query(query->q_srv, PJ_FALSE);
+ query->q_srv = NULL;
+ has_pending = PJ_TRUE;
+ }
+
+ for (i=0; i<query->srv_cnt; ++i) {
+ struct srv_target *srv = &query->srv[i];
+ if (srv->q_a) {
+ pj_dns_resolver_cancel_query(srv->q_a, PJ_FALSE);
+ srv->q_a = NULL;
+ has_pending = PJ_TRUE;
+ }
+ }
+
+ if (has_pending && notify && query->cb) {
+ (*query->cb)(query->token, PJ_ECANCELLED, NULL);
+ }
+
+ return has_pending? PJ_SUCCESS : PJ_EINVALIDOP;
+}
+
+
+#define SWAP(type,ptr1,ptr2) if (ptr1 != ptr2) { \
+ type tmp; \
+ pj_memcpy(&tmp, ptr1, sizeof(type)); \
+ pj_memcpy(ptr1, ptr2, sizeof(type)); \
+ (ptr1)->target_name.ptr = (ptr1)->target_buf;\
+ pj_memcpy(ptr2, &tmp, sizeof(type)); \
+ (ptr2)->target_name.ptr = (ptr2)->target_buf;\
+ } else {}
+
+
+/* Build server entries in the query_job based on received SRV response */
+static void build_server_entries(pj_dns_srv_async_query *query_job,
+ pj_dns_parsed_packet *response)
+{
+ unsigned i;
+
+ /* Save the Resource Records in DNS answer into SRV targets. */
+ query_job->srv_cnt = 0;
+ for (i=0; i<response->hdr.anscount &&
+ query_job->srv_cnt < PJ_DNS_SRV_MAX_ADDR; ++i)
+ {
+ pj_dns_parsed_rr *rr = &response->ans[i];
+ struct srv_target *srv = &query_job->srv[query_job->srv_cnt];
+
+ if (rr->type != PJ_DNS_TYPE_SRV) {
+ PJ_LOG(4,(query_job->objname,
+ "Received non SRV answer for SRV query_job!"));
+ continue;
+ }
+
+ if (rr->rdata.srv.target.slen > PJ_MAX_HOSTNAME) {
+ PJ_LOG(4,(query_job->objname, "Hostname is too long!"));
+ continue;
+ }
+
+ /* Build the SRV entry for RR */
+ pj_bzero(srv, sizeof(*srv));
+ srv->target_name.ptr = srv->target_buf;
+ pj_strncpy(&srv->target_name, &rr->rdata.srv.target,
+ sizeof(srv->target_buf));
+ srv->port = rr->rdata.srv.port;
+ srv->priority = rr->rdata.srv.prio;
+ srv->weight = rr->rdata.srv.weight;
+
+ ++query_job->srv_cnt;
+ }
+
+ if (query_job->srv_cnt == 0) {
+ PJ_LOG(4,(query_job->objname,
+ "Could not find SRV record in DNS answer!"));
+ return;
+ }
+
+ /* First pass:
+ * order the entries based on priority.
+ */
+ for (i=0; i<query_job->srv_cnt-1; ++i) {
+ unsigned min = i, j;
+ for (j=i+1; j<query_job->srv_cnt; ++j) {
+ if (query_job->srv[j].priority < query_job->srv[min].priority)
+ min = j;
+ }
+ SWAP(struct srv_target, &query_job->srv[i], &query_job->srv[min]);
+ }
+
+ /* Second pass:
+ * pick one host among hosts with the same priority, according
+ * to its weight. The idea is when one server fails, client should
+ * contact the next server with higher priority rather than contacting
+ * server with the same priority as the failed one.
+ *
+ * The algorithm for selecting server among servers with the same
+ * priority is described in RFC 2782.
+ */
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ unsigned j, count=1, sum;
+
+ /* Calculate running sum for servers with the same priority */
+ sum = query_job->srv[i].sum = query_job->srv[i].weight;
+ for (j=i+1; j<query_job->srv_cnt &&
+ query_job->srv[j].priority == query_job->srv[i].priority; ++j)
+ {
+ sum += query_job->srv[j].weight;
+ query_job->srv[j].sum = sum;
+ ++count;
+ }
+
+ if (count > 1) {
+ unsigned r;
+
+ /* Elect one random number between zero and the total sum of
+ * weight (inclusive).
+ */
+ r = pj_rand() % (sum + 1);
+
+ /* Select the first server which running sum is greater than or
+ * equal to the random number.
+ */
+ for (j=i; j<i+count; ++j) {
+ if (query_job->srv[j].sum >= r)
+ break;
+ }
+
+ /* Must have selected one! */
+ pj_assert(j != i+count);
+
+ /* Put this entry in front (of entries with same priority) */
+ SWAP(struct srv_target, &query_job->srv[i], &query_job->srv[j]);
+
+ /* Remove all other entries (of the same priority) */
+ while (count > 1) {
+ pj_array_erase(query_job->srv, sizeof(struct srv_target),
+ query_job->srv_cnt, i+1);
+ --count;
+ --query_job->srv_cnt;
+ }
+ }
+ }
+
+ /* Since we've been moving around SRV entries, update the pointers
+ * in target_name.
+ */
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ query_job->srv[i].target_name.ptr = query_job->srv[i].target_buf;
+ }
+
+ /* Check for Additional Info section if A records are available, and
+ * fill in the IP address (so that we won't need to resolve the A
+ * record with another DNS query_job).
+ */
+ for (i=0; i<response->hdr.arcount; ++i) {
+ pj_dns_parsed_rr *rr = &response->arr[i];
+ unsigned j;
+
+ if (rr->type != PJ_DNS_TYPE_A)
+ continue;
+
+ /* Yippeaiyee!! There is an "A" record!
+ * Update the IP address of the corresponding SRV record.
+ */
+ for (j=0; j<query_job->srv_cnt; ++j) {
+ if (pj_stricmp(&rr->name, &query_job->srv[j].target_name)==0) {
+ unsigned cnt = query_job->srv[j].addr_cnt;
+ query_job->srv[j].addr[cnt].s_addr = rr->rdata.a.ip_addr.s_addr;
+ /* Only increment host_resolved once per SRV record */
+ if (query_job->srv[j].addr_cnt == 0)
+ ++query_job->host_resolved;
+ ++query_job->srv[j].addr_cnt;
+ break;
+ }
+ }
+
+ /* Not valid message; SRV entry might have been deleted in
+ * server selection process.
+ */
+ /*
+ if (j == query_job->srv_cnt) {
+ PJ_LOG(4,(query_job->objname,
+ "Received DNS SRV answer with A record, but "
+ "couldn't find matching name (name=%.*s)",
+ (int)rr->name.slen,
+ rr->name.ptr));
+ }
+ */
+ }
+
+ /* Rescan again the name specified in the SRV record to see if IP
+ * address is specified as the target name (unlikely, but well, who
+ * knows..).
+ */
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ pj_in_addr addr;
+
+ if (query_job->srv[i].addr_cnt != 0) {
+ /* IP address already resolved */
+ continue;
+ }
+
+ if (pj_inet_aton(&query_job->srv[i].target_name, &addr) != 0) {
+ query_job->srv[i].addr[query_job->srv[i].addr_cnt++] = addr;
+ ++query_job->host_resolved;
+ }
+ }
+
+ /* Print resolved entries to the log */
+ PJ_LOG(5,(query_job->objname,
+ "SRV query_job for %.*s completed, "
+ "%d of %d total entries selected%c",
+ (int)query_job->full_name.slen,
+ query_job->full_name.ptr,
+ query_job->srv_cnt,
+ response->hdr.anscount,
+ (query_job->srv_cnt ? ':' : ' ')));
+
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ const char *addr;
+
+ if (query_job->srv[i].addr_cnt != 0)
+ addr = pj_inet_ntoa(query_job->srv[i].addr[0]);
+ else
+ addr = "-";
+
+ PJ_LOG(5,(query_job->objname,
+ " %d: SRV %d %d %d %.*s (%s)",
+ i, query_job->srv[i].priority,
+ query_job->srv[i].weight,
+ query_job->srv[i].port,
+ (int)query_job->srv[i].target_name.slen,
+ query_job->srv[i].target_name.ptr,
+ addr));
+ }
+}
+
+
+/* Start DNS A record queries for all SRV records in the query_job structure */
+static pj_status_t resolve_hostnames(pj_dns_srv_async_query *query_job)
+{
+ unsigned i;
+ pj_status_t err=PJ_SUCCESS, status;
+
+ query_job->dns_state = PJ_DNS_TYPE_A;
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ struct srv_target *srv = &query_job->srv[i];
+
+ PJ_LOG(5, (query_job->objname,
+ "Starting async DNS A query_job for %.*s",
+ (int)srv->target_name.slen,
+ srv->target_name.ptr));
+
+ srv->common.type = PJ_DNS_TYPE_A;
+ srv->parent = query_job;
+
+ status = pj_dns_resolver_start_query(query_job->resolver,
+ &srv->target_name,
+ PJ_DNS_TYPE_A, 0,
+ &dns_callback,
+ srv, &srv->q_a);
+ if (status != PJ_SUCCESS) {
+ query_job->host_resolved++;
+ err = status;
+ }
+ }
+
+ return (query_job->host_resolved == query_job->srv_cnt) ? err : PJ_SUCCESS;
+}
+
+/*
+ * This callback is called by PJLIB-UTIL DNS resolver when asynchronous
+ * query_job has completed (successfully or with error).
+ */
+static void dns_callback(void *user_data,
+ pj_status_t status,
+ pj_dns_parsed_packet *pkt)
+{
+ struct common *common = (struct common*) user_data;
+ pj_dns_srv_async_query *query_job;
+ struct srv_target *srv = NULL;
+ unsigned i;
+
+ if (common->type == PJ_DNS_TYPE_SRV) {
+ query_job = (pj_dns_srv_async_query*) common;
+ srv = NULL;
+ } else if (common->type == PJ_DNS_TYPE_A) {
+ srv = (struct srv_target*) common;
+ query_job = srv->parent;
+ } else {
+ pj_assert(!"Unexpected user data!");
+ return;
+ }
+
+ /* Proceed to next stage */
+ if (query_job->dns_state == PJ_DNS_TYPE_SRV) {
+
+ /* We are getting SRV response */
+
+ query_job->q_srv = NULL;
+
+ if (status == PJ_SUCCESS && pkt->hdr.anscount != 0) {
+ /* Got SRV response, build server entry. If A records are available
+ * in additional records section of the DNS response, save them too.
+ */
+ build_server_entries(query_job, pkt);
+
+ } else if (status != PJ_SUCCESS) {
+ char errmsg[PJ_ERR_MSG_SIZE];
+
+ /* Update query_job last error */
+ query_job->last_error = status;
+
+ pj_strerror(status, errmsg, sizeof(errmsg));
+ PJ_LOG(4,(query_job->objname,
+ "DNS SRV resolution failed for %.*s: %s",
+ (int)query_job->full_name.slen,
+ query_job->full_name.ptr,
+ errmsg));
+
+ /* Trigger error when fallback is disabled */
+ if ((query_job->option &
+ (PJ_DNS_SRV_FALLBACK_A | PJ_DNS_SRV_FALLBACK_AAAA)) == 0)
+ {
+ goto on_error;
+ }
+ }
+
+ /* If we can't build SRV record, assume the original target is
+ * an A record and resolve with DNS A resolution.
+ */
+ if (query_job->srv_cnt == 0) {
+ /* Looks like we aren't getting any SRV responses.
+ * Resolve the original target as A record by creating a
+ * single "dummy" srv record and start the hostname resolution.
+ */
+ PJ_LOG(4, (query_job->objname,
+ "DNS SRV resolution failed for %.*s, trying "
+ "resolving A record for %.*s",
+ (int)query_job->full_name.slen,
+ query_job->full_name.ptr,
+ (int)query_job->domain_part.slen,
+ query_job->domain_part.ptr));
+
+ /* Create a "dummy" srv record using the original target */
+ i = query_job->srv_cnt++;
+ pj_bzero(&query_job->srv[i], sizeof(query_job->srv[i]));
+ query_job->srv[i].target_name = query_job->domain_part;
+ query_job->srv[i].priority = 0;
+ query_job->srv[i].weight = 0;
+ query_job->srv[i].port = query_job->def_port;
+ }
+
+
+ /* Resolve server hostnames (DNS A record) for hosts which don't have
+ * A record yet.
+ */
+ if (query_job->host_resolved != query_job->srv_cnt) {
+ status = resolve_hostnames(query_job);
+ if (status != PJ_SUCCESS)
+ goto on_error;
+
+ /* Must return now. Callback may have been called and query_job
+ * may have been destroyed.
+ */
+ return;
+ }
+
+ } else if (query_job->dns_state == PJ_DNS_TYPE_A) {
+
+ /* Clear the outstanding job */
+ srv->q_a = NULL;
+
+ /* Check that we really have answer */
+ if (status==PJ_SUCCESS && pkt->hdr.anscount != 0) {
+ pj_dns_a_record rec;
+
+ /* Parse response */
+ status = pj_dns_parse_a_response(pkt, &rec);
+ if (status != PJ_SUCCESS)
+ goto on_error;
+
+ pj_assert(rec.addr_count != 0);
+
+ /* Update CNAME alias, if present. */
+ if (rec.alias.slen) {
+ pj_assert(rec.alias.slen <= (int)sizeof(srv->cname_buf));
+ srv->cname.ptr = srv->cname_buf;
+ pj_strcpy(&srv->cname, &rec.alias);
+ } else {
+ srv->cname.slen = 0;
+ }
+
+ /* Update IP address of the corresponding hostname or CNAME */
+ if (srv->addr_cnt < ADDR_MAX_COUNT) {
+ srv->addr[srv->addr_cnt++].s_addr = rec.addr[0].s_addr;
+
+ PJ_LOG(5,(query_job->objname,
+ "DNS A for %.*s: %s",
+ (int)srv->target_name.slen,
+ srv->target_name.ptr,
+ pj_inet_ntoa(rec.addr[0])));
+ }
+
+ /* Check for multiple IP addresses */
+ for (i=1; i<rec.addr_count && srv->addr_cnt < ADDR_MAX_COUNT; ++i)
+ {
+ srv->addr[srv->addr_cnt++].s_addr = rec.addr[i].s_addr;
+
+ PJ_LOG(5,(query_job->objname,
+ "Additional DNS A for %.*s: %s",
+ (int)srv->target_name.slen,
+ srv->target_name.ptr,
+ pj_inet_ntoa(rec.addr[i])));
+ }
+
+ } else if (status != PJ_SUCCESS) {
+ char errmsg[PJ_ERR_MSG_SIZE];
+
+ /* Update last error */
+ query_job->last_error = status;
+
+ /* Log error */
+ pj_strerror(status, errmsg, sizeof(errmsg));
+ PJ_LOG(4,(query_job->objname, "DNS A record resolution failed: %s",
+ errmsg));
+ }
+
+ ++query_job->host_resolved;
+
+ } else {
+ pj_assert(!"Unexpected state!");
+ query_job->last_error = status = PJ_EINVALIDOP;
+ goto on_error;
+ }
+
+ /* Check if all hosts have been resolved */
+ if (query_job->host_resolved == query_job->srv_cnt) {
+ /* Got all answers, build server addresses */
+ pj_dns_srv_record srv_rec;
+
+ srv_rec.count = 0;
+ for (i=0; i<query_job->srv_cnt; ++i) {
+ unsigned j;
+ struct srv_target *srv = &query_job->srv[i];
+
+ srv_rec.entry[srv_rec.count].priority = srv->priority;
+ srv_rec.entry[srv_rec.count].weight = srv->weight;
+ srv_rec.entry[srv_rec.count].port = (pj_uint16_t)srv->port ;
+
+ srv_rec.entry[srv_rec.count].server.name = srv->target_name;
+ srv_rec.entry[srv_rec.count].server.alias = srv->cname;
+ srv_rec.entry[srv_rec.count].server.addr_count = 0;
+
+ pj_assert(srv->addr_cnt <= PJ_DNS_MAX_IP_IN_A_REC);
+
+ for (j=0; j<srv->addr_cnt; ++j) {
+ srv_rec.entry[srv_rec.count].server.addr[j].s_addr =
+ srv->addr[j].s_addr;
+ ++srv_rec.entry[srv_rec.count].server.addr_count;
+ }
+
+ if (srv->addr_cnt > 0) {
+ ++srv_rec.count;
+ if (srv_rec.count == PJ_DNS_SRV_MAX_ADDR)
+ break;
+ }
+ }
+
+ PJ_LOG(5,(query_job->objname,
+ "Server resolution complete, %d server entry(s) found",
+ srv_rec.count));
+
+
+ if (srv_rec.count > 0)
+ status = PJ_SUCCESS;
+ else {
+ status = query_job->last_error;
+ if (status == PJ_SUCCESS)
+ status = PJLIB_UTIL_EDNSNOANSWERREC;
+ }
+
+ /* Call the callback */
+ (*query_job->cb)(query_job->token, status, &srv_rec);
+ }
+
+
+ return;
+
+on_error:
+ /* Check for failure */
+ if (status != PJ_SUCCESS) {
+ char errmsg[PJ_ERR_MSG_SIZE];
+ PJ_UNUSED_ARG(errmsg);
+ PJ_LOG(4,(query_job->objname,
+ "DNS %s record resolution error for '%.*s'."
+ " Err=%d (%s)",
+ pj_dns_get_type_name(query_job->dns_state),
+ (int)query_job->domain_part.slen,
+ query_job->domain_part.ptr,
+ status,
+ pj_strerror(status,errmsg,sizeof(errmsg)).ptr));
+ (*query_job->cb)(query_job->token, status, NULL);
+ return;
+ }
+}
+
+