diff options
Diffstat (limited to 'pjsip/src/pjsua-lib/pjsua_acc.c')
| -rw-r--r-- | pjsip/src/pjsua-lib/pjsua_acc.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/pjsip/src/pjsua-lib/pjsua_acc.c b/pjsip/src/pjsua-lib/pjsua_acc.c index 1abaedd1..dbdb698c 100644 --- a/pjsip/src/pjsua-lib/pjsua_acc.c +++ b/pjsip/src/pjsua-lib/pjsua_acc.c @@ -2933,6 +2933,28 @@ PJ_DEF(pj_status_t) pjsua_acc_create_request(pjsua_acc_id acc_id, return PJ_SUCCESS; } +/* + * Internal: + * determine if an address is a valid IP address, and if it is, + * return the IP version (4 or 6). + */ +static int get_ip_addr_ver(const pj_str_t *host) +{ + pj_in_addr dummy; + pj_in6_addr dummy6; + + /* First check with inet_aton() */ + if (pj_inet_aton(host, &dummy) > 0) + return 4; + + /* Then check if this is an IPv6 address */ + if (pj_inet_pton(pj_AF_INET6(), host, &dummy6) == PJ_SUCCESS) + return 6; + + /* Not an IP address */ + return 0; +} + /* Get local transport address suitable to be used for Via or Contact address * to send request to the specified destination URI. */ @@ -3014,9 +3036,104 @@ pj_status_t pjsua_acc_get_uac_addr(pjsua_acc_id acc_id, if (status != PJ_SUCCESS) return status; + /* Set this as default return value. This may be changed below + * for TCP/TLS + */ addr->host = tfla2_prm.ret_addr; addr->port = tfla2_prm.ret_port; + /* For TCP/TLS, acc may request to specify source port */ + if (acc->cfg.contact_rewrite_use_src_port) { + pjsip_host_info dinfo; + pjsip_transport *tp = NULL; + pj_addrinfo ai; + pj_bool_t log_written = PJ_FALSE; + + status = pjsip_get_dest_info((pjsip_uri*)sip_uri, NULL, + pool, &dinfo); + + if (status==PJ_SUCCESS && (dinfo.flag & PJSIP_TRANSPORT_RELIABLE)==0) { + /* Not TCP or TLS. No need to do this */ + status = PJ_EINVALIDOP; + log_written = PJ_TRUE; + } + + if (status==PJ_SUCCESS && + get_ip_addr_ver(&dinfo.addr.host)==0 && + pjsua_var.ua_cfg.nameserver_count) + { + /* If nameserver is configured, PJSIP will resolve destinations + * by their DNS SRV record first. On the other hand, we will + * resolve destination with DNS A record via pj_getaddrinfo(). + * They may yield different IP addresses, hence causing different + * TCP/TLS connection to be created and hence different source + * address. + */ + PJ_LOG(4,(THIS_FILE, "Warning: cannot use source TCP/TLS socket" + " address for Contact when nameserver is configured.")); + status = PJ_ENOTSUP; + log_written = PJ_TRUE; + } + + if (status == PJ_SUCCESS) { + unsigned cnt=1; + int af; + + af = (dinfo.type & PJSIP_TRANSPORT_IPV6)? PJ_AF_INET6 : PJ_AF_INET; + status = pj_getaddrinfo(af, &dinfo.addr.host, &cnt, &ai); + } + + if (status == PJ_SUCCESS) { + int addr_len = pj_sockaddr_get_len(&ai.ai_addr); + pj_uint16_t port = dinfo.addr.port; + + if (port==0) { + port = (dinfo.flag & PJSIP_TRANSPORT_SECURE) ? 5061 : 5060; + } + pj_sockaddr_set_port(&ai.ai_addr, port); + status = pjsip_endpt_acquire_transport(pjsua_var.endpt, + dinfo.type, + &ai.ai_addr, + addr_len, + &tp_sel, &tp); + } + + if (status == PJ_SUCCESS && (tp->local_name.port == 0 || + tp->local_name.host.slen==0 || + *tp->local_name.host.ptr=='0')) + { + /* Trap zero port or "0.0.0.0" address. */ + /* The TCP/TLS transport is still connecting and unfortunately + * this OS doesn't report the bound local address in this state. + */ + PJ_LOG(4,(THIS_FILE, "Unable to get transport local port " + "for Contact address (OS doesn't support)")); + status = PJ_ENOTSUP; + log_written = PJ_TRUE; + } + + if (status == PJ_SUCCESS) { + /* Got the local transport address */ + pj_strdup(pool, &addr->host, &tp->local_name.host); + addr->port = tp->local_name.port; + } + + if (tp) { + /* Here the transport's ref counter WILL reach zero. But the + * transport will NOT get destroyed because it should have an + * idle timer. + */ + pjsip_transport_dec_ref(tp); + tp = NULL; + } + + if (status != PJ_SUCCESS && !log_written) { + PJ_PERROR(4,(THIS_FILE, status, "Unable to use source local " + "TCP socket address for Contact")); + } + status = PJ_SUCCESS; + } + if (p_tp_type) *p_tp_type = tp_type; |