int __osip_nict_init (osip_nict_t ** nict, osip_t * osip, osip_message_t * request) { osip_route_t *route; int i; time_t now; OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO2, NULL, "allocating NICT context\n")); *nict = (osip_nict_t *) osip_malloc (sizeof (osip_nict_t)); if (*nict == NULL) return -1; now = time (NULL); #ifndef DISABLE_MEMSET memset (*nict, 0, sizeof (osip_nict_t)); #else (*ict)->destination = NULL; #endif /* for REQUEST retransmissions */ { osip_via_t *via; char *proto; i = osip_message_get_via (request, 0, &via); /* get top via */ if (i != 0) goto ii_error_1; proto = via_get_protocol (via); if (proto == NULL) goto ii_error_1; i = osip_strncasecmp (proto, "TCP", 3); if (i != 0) { /* for other reliable protocol than TCP, the timer must be desactived by the external application */ (*nict)->timer_e_length = DEFAULT_T1; (*nict)->timer_e_start = now; /* started */ (*nict)->timer_k_length = DEFAULT_T4; (*nict)->timer_k_start = -1; /* not started */ } else { /* TCP is used: */ (*nict)->timer_e_length = -1; /* E is not ACTIVE */ (*nict)->timer_e_start = -1; (*nict)->timer_k_length = 0; /* MUST do the transition immediatly */ (*nict)->timer_k_start = -1; /* not started */ } } /* for PROXY, the destination MUST be set by the application layer, this one may not be correct. */ osip_message_get_route (request, 0, &route); if (route != NULL) { int port = 5060; if (route->url->port != NULL) port = osip_atoi (route->url->port); osip_nict_set_destination ((*nict), osip_strdup (route->url->host), port); } else (*nict)->port = 5060; (*nict)->timer_f_length = 64 * DEFAULT_T1; (*nict)->timer_f_start = now; /* started */ /* Oups! a Bug! */ /* (*nict)->port = 5060; */ return 0; ii_error_1: osip_free (*nict); return -1; }
static int udp_tl_send_message (osip_transaction_t * tr, osip_message_t * sip, char *host, int port, int out_socket) { int len = 0; size_t length = 0; struct addrinfo *addrinfo; struct __eXosip_sockaddr addr; char *message; char *crypt_date; char ipbuf[INET6_ADDRSTRLEN]; int i; if (udp_socket <= 0) return -1; if (host == NULL) { host = sip->req_uri->host; if (sip->req_uri->port != NULL) port = osip_atoi (sip->req_uri->port); else port = 5060; } eXtl_update_local_target (sip); i = -1; #ifndef MINISIZE if (tr != NULL && tr->record.name[0] != '\0' && tr->record.srventry[0].srv[0] != '\0') { /* always choose the first here. if a network error occur, remove first entry and replace with next entries. */ osip_srv_entry_t *srv; int n = 0; for (srv = &tr->record.srventry[0]; n < 10 && tr->record.srventry[0].srv[0]; srv = &tr->record.srventry[0]) { i = eXosip_get_addrinfo (&addrinfo, srv->srv, srv->port, IPPROTO_UDP); if (i == 0) { host = srv->srv; port = srv->port; break; } memmove (&tr->record.srventry[0], &tr->record.srventry[1], 9 * sizeof (osip_srv_entry_t)); memset (&tr->record.srventry[9], 0, sizeof (osip_srv_entry_t)); i = -1; /* copy next element */ n++; } } #endif /* if SRV was used, distination may be already found */ if (i != 0) { i = eXosip_get_addrinfo (&addrinfo, host, port, IPPROTO_UDP); } if (i != 0) { return -1; } memcpy (&addr, addrinfo->ai_addr, addrinfo->ai_addrlen); len = addrinfo->ai_addrlen; eXosip_freeaddrinfo (addrinfo); /* remove preloaded route if there is no tag in the To header */ { osip_route_t *route = NULL; osip_generic_param_t *tag = NULL; osip_message_get_route (sip, 0, &route); osip_to_get_tag (sip->to, &tag); if (tag == NULL && route != NULL && route->url != NULL) { osip_list_remove (&sip->routes, 0); } i = osip_message_to_str (sip, &message, &length); if (tag == NULL && route != NULL && route->url != NULL) { osip_list_add (&sip->routes, route, 0); } } if (i != 0 || length <= 0) { return -1; } switch (((struct sockaddr *) &addr)->sa_family) { case AF_INET: inet_ntop (((struct sockaddr *) &addr)->sa_family, &(((struct sockaddr_in *) &addr)->sin_addr), ipbuf, sizeof (ipbuf)); break; case AF_INET6: inet_ntop (((struct sockaddr *) &addr)->sa_family, &(((struct sockaddr_in6 *) &addr)->sin6_addr), ipbuf, sizeof (ipbuf)); break; default: strncpy (ipbuf, "(unknown)", sizeof (ipbuf)); break; } OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL, "Message sent: (to dest=%s:%i)\n%s\n", ipbuf, port, message)); if (tr != NULL) { if (tr->ict_context != NULL) osip_ict_set_destination (tr->ict_context, osip_strdup (ipbuf), port); if (tr->nict_context != NULL) osip_nict_set_destination (tr->nict_context, osip_strdup (ipbuf), port); } //SIP加密点 crypt_date = (char *)malloc(length); memcpy(crypt_date,(const char *)message, length); #ifdef ENABLE_MYCRYPT CRYPT_DATA_SIP((unsigned char *)crypt_date,length); #endif // ENABLE_MYCRYPT if (0 > sendto (udp_socket, (const void *) crypt_date, length, 0, (struct sockaddr *) &addr, len)) { #ifdef WIN32 if (WSAECONNREFUSED == WSAGetLastError ()) #else if (ECONNREFUSED == errno) #endif { /* This can be considered as an error, but for the moment, I prefer that the application continue to try sending message again and again... so we are not in a error case. Nevertheless, this error should be announced! ALSO, UAS may not have any other options than retry always on the same port. */ osip_free (message); return 1; } else { #ifndef MINISIZE /* delete first SRV entry that is not reachable */ if (tr != NULL && tr->record.name[0] != '\0' && tr->record.srventry[0].srv[0] != '\0') { memmove (&tr->record.srventry[0], &tr->record.srventry[1], 9 * sizeof (osip_srv_entry_t)); memset (&tr->record.srventry[9], 0, sizeof (osip_srv_entry_t)); osip_free (message); return OSIP_SUCCESS; /* retry for next retransmission! */ } #endif /* SIP_NETWORK_ERROR; */ osip_free (message); return -1; } } if (eXosip.keep_alive > 0) { if (MSG_IS_REGISTER (sip)) { eXosip_reg_t *reg = NULL; if (_eXosip_reg_find (®, tr) == 0) { memcpy (&(reg->addr), &addr, len); reg->len = len; } } } osip_free (message); return OSIP_SUCCESS; }
static int udp_tl_send_message(osip_transaction_t * tr, osip_message_t * sip, char *host, int port, int out_socket) { int len = 0; size_t length = 0; struct addrinfo *addrinfo; struct __eXosip_sockaddr addr; char *message = NULL; char ipbuf[INET6_ADDRSTRLEN]; int i; osip_naptr_t *naptr_record=NULL; if (udp_socket <= 0) return -1; if (host == NULL) { host = sip->req_uri->host; if (sip->req_uri->port != NULL) port = osip_atoi(sip->req_uri->port); else port = 5060; } eXtl_update_local_target(sip); i = -1; #ifndef MINISIZE if (tr==NULL) { _eXosip_srv_lookup(sip, &naptr_record); if (naptr_record!=NULL) { eXosip_dnsutils_dns_process(naptr_record, 1); if (naptr_record->naptr_state==OSIP_NAPTR_STATE_NAPTRDONE ||naptr_record->naptr_state==OSIP_NAPTR_STATE_SRVINPROGRESS) eXosip_dnsutils_dns_process(naptr_record, 1); } if (naptr_record!=NULL && naptr_record->naptr_state==OSIP_NAPTR_STATE_SRVDONE) { /* 4: check if we have the one we want... */ if (naptr_record->sipudp_record.name[0] != '\0' && naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].srv[0] != '\0') { /* always choose the first here. if a network error occur, remove first entry and replace with next entries. */ osip_srv_entry_t *srv; int n = 0; for (srv = &naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index]; n < 10 && naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].srv[0]; srv = &naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index]) { if (srv->ipaddress[0]) i = eXosip_get_addrinfo(&addrinfo, srv->ipaddress, srv->port, IPPROTO_UDP); else i = eXosip_get_addrinfo(&addrinfo, srv->srv, srv->port, IPPROTO_UDP); if (i == 0) { host = srv->srv; port = srv->port; break; } i = eXosip_dnsutils_rotate_srv(&naptr_record->sipudp_record); if (i<=0) { return -1; } if (i>=n) { return -1; } i = -1; /* copy next element */ n++; } } } if (naptr_record!=NULL && naptr_record->keep_in_cache==0) osip_free(naptr_record); naptr_record=NULL; } else { naptr_record = tr->naptr_record; } if (naptr_record!=NULL) { /* 1: make sure there is no pending DNS */ eXosip_dnsutils_dns_process(naptr_record, 0); if (naptr_record->naptr_state==OSIP_NAPTR_STATE_NAPTRDONE ||naptr_record->naptr_state==OSIP_NAPTR_STATE_SRVINPROGRESS) eXosip_dnsutils_dns_process(naptr_record, 0); if (naptr_record->naptr_state==OSIP_NAPTR_STATE_UNKNOWN) { /* fallback to DNS A */ if (naptr_record->keep_in_cache==0) osip_free(naptr_record); naptr_record=NULL; if (tr!=NULL) tr->naptr_record=NULL; /* must never happen? */ } else if (naptr_record->naptr_state==OSIP_NAPTR_STATE_INPROGRESS) { /* 2: keep waiting (naptr answer not received) */ return OSIP_SUCCESS + 1; } else if (naptr_record->naptr_state==OSIP_NAPTR_STATE_NAPTRDONE) { /* 3: keep waiting (naptr answer received/no srv answer received) */ return OSIP_SUCCESS + 1; } else if (naptr_record->naptr_state==OSIP_NAPTR_STATE_SRVINPROGRESS) { /* 3: keep waiting (naptr answer received/no srv answer received) */ return OSIP_SUCCESS + 1; } else if (naptr_record->naptr_state==OSIP_NAPTR_STATE_SRVDONE) { /* 4: check if we have the one we want... */ if (naptr_record->sipudp_record.name[0] != '\0' && naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].srv[0] != '\0') { /* always choose the first here. if a network error occur, remove first entry and replace with next entries. */ osip_srv_entry_t *srv; int n = 0; for (srv = &naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index]; n < 10 && naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].srv[0]; srv = &naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index]) { if (srv->ipaddress[0]) i = eXosip_get_addrinfo(&addrinfo, srv->ipaddress, srv->port, IPPROTO_UDP); else i = eXosip_get_addrinfo(&addrinfo, srv->srv, srv->port, IPPROTO_UDP); if (i == 0) { host = srv->srv; port = srv->port; break; } i = eXosip_dnsutils_rotate_srv(&naptr_record->sipudp_record); if (i<=0) { return -1; } if (i>=n) { return -1; } i = -1; /* copy next element */ n++; } } } else if (naptr_record->naptr_state==OSIP_NAPTR_STATE_NOTSUPPORTED ||naptr_record->naptr_state==OSIP_NAPTR_STATE_RETRYLATER) { /* 5: fallback to DNS A */ if (naptr_record->keep_in_cache==0) osip_free(naptr_record); naptr_record=NULL; if (tr!=NULL) tr->naptr_record=NULL; } } #endif /* if SRV was used, destination may be already found */ if (i != 0) { i = eXosip_get_addrinfo(&addrinfo, host, port, IPPROTO_UDP); } if (i != 0) { return -1; } memcpy(&addr, addrinfo->ai_addr, addrinfo->ai_addrlen); len = addrinfo->ai_addrlen; eXosip_freeaddrinfo(addrinfo); /* remove preloaded route if there is no tag in the To header */ { osip_route_t *route = NULL; osip_generic_param_t *tag = NULL; osip_message_get_route(sip, 0, &route); osip_to_get_tag(sip->to, &tag); if (tag == NULL && route != NULL && route->url != NULL) { osip_list_remove(&sip->routes, 0); } i = osip_message_to_str(sip, &message, &length); if (tag == NULL && route != NULL && route->url != NULL) { osip_list_add(&sip->routes, route, 0); } } if (i != 0 || length <= 0) { osip_free(message); return -1; } switch (((struct sockaddr *) &addr)->sa_family) { case AF_INET: inet_ntop(((struct sockaddr *) &addr)->sa_family, &(((struct sockaddr_in *) &addr)->sin_addr), ipbuf, sizeof(ipbuf)); break; case AF_INET6: inet_ntop(((struct sockaddr *) &addr)->sa_family, &(((struct sockaddr_in6 *) &addr)->sin6_addr), ipbuf, sizeof(ipbuf)); break; default: strncpy(ipbuf, "(unknown)", sizeof(ipbuf)); break; } OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_INFO1, NULL, "Message sent: (to dest=%s:%i)\n%s\n", ipbuf, port, message)); if (osip_strcasecmp(host, ipbuf)!=0 && MSG_IS_REQUEST(sip)) { if (MSG_IS_REGISTER(sip)) { struct eXosip_dns_cache entry; memset(&entry, 0, sizeof(struct eXosip_dns_cache)); snprintf(entry.host, sizeof(entry.host), "%s", host); snprintf(entry.ip, sizeof(entry.ip), "%s", ipbuf); eXosip_set_option(EXOSIP_OPT_ADD_DNS_CACHE, (void *) &entry); } } if (tr != NULL) { if (tr->ict_context != NULL) osip_ict_set_destination(tr->ict_context, osip_strdup(ipbuf), port); if (tr->nict_context != NULL) osip_nict_set_destination(tr->nict_context, osip_strdup(ipbuf), port); } if (0 > sendto(udp_socket, (const void *) message, length, 0, (struct sockaddr *) &addr, len)) { #ifndef MINISIZE if (naptr_record!=NULL) { /* rotate on failure! */ if (eXosip_dnsutils_rotate_srv(&naptr_record->sipudp_record)>0) { osip_free(message); return OSIP_SUCCESS + 1; /* retry for next retransmission! */ } } #endif /* SIP_NETWORK_ERROR; */ osip_free(message); return -1; } if (eXosip.keep_alive > 0) { if (MSG_IS_REGISTER(sip)) { eXosip_reg_t *reg = NULL; if (_eXosip_reg_find(®, tr) == 0) { memcpy(&(reg->addr), &addr, len); reg->len = len; } } } #ifndef MINISIZE if (naptr_record!=NULL) { if (tr!=NULL && MSG_IS_REGISTER(sip) && tr->last_response==NULL) { /* failover for outgoing transaction */ time_t now; now = time(NULL); OSIP_TRACE(osip_trace (__FILE__, __LINE__, OSIP_INFO2, NULL, "not yet answered\n")); if (tr != NULL && now - tr->birth_time > 10 && now - tr->birth_time < 13) { /* avoid doing this twice... */ if (eXosip_dnsutils_rotate_srv(&naptr_record->sipudp_record)>0) { OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_INFO1, NULL, "Doing failover: %s:%i->%s:%i\n", host, port, naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].srv, naptr_record->sipudp_record.srventry[naptr_record->sipudp_record.index].port)); osip_free(message); return OSIP_SUCCESS + 1; /* retry for next retransmission! */ } } } } #endif osip_free(message); return OSIP_SUCCESS; }