FS-11583 [mod_sofia] fix crash when missing address in register event

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -510,6 +510,9 @@ int sofia_glue_transport_has_tls(const sofia_transport_t tp)
 void sofia_glue_get_addr(msg_t *msg, char *buf, size_t buflen, int *port)
 {
 	su_addrinfo_t *addrinfo = msg_addrinfo(msg);
+	if (!addrinfo) {
+		return;
+	}
 
 	if (buf) {
 		get_addr(buf, buflen, addrinfo->ai_addr, (socklen_t)addrinfo->ai_addrlen);

src/mod/endpoints/mod_sofia/sofia_reg.c

@@ -151,8 +151,10 @@ void sofia_reg_fire_custom_gateway_state_event(sofia_gateway_t *gateway, int sta
 		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Gateway", gateway->name);
 		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "State", sofia_state_string(gateway->state));
 		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Ping-Status", sofia_gateway_status_name(gateway->status));
-		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Register-Network-IP", gateway->register_network_ip);
-		switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "Register-Network-Port", "%d", gateway->register_network_port);
+		if (!zstr_buf(gateway->register_network_ip)) {
+			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Register-Network-IP", gateway->register_network_ip);
+			switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "Register-Network-Port", "%d", gateway->register_network_port);
+		}
 
 		if (!zstr(phrase)) {
 			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Phrase", phrase);
@@ -2406,13 +2408,17 @@ void sofia_reg_handle_sip_r_register(int status,
 	if (sofia_private && gateway) {
 		reg_state_t ostate = gateway->state;
 		char oregister_network_ip[80] = { 0 };
-		char network_ip[80];
+		char network_ip[80] = { 0 };
 
-		if (!zstr_buf(gateway->register_network_ip)) {
-			strncpy(oregister_network_ip, gateway->register_network_ip, sizeof(oregister_network_ip) - 1);
+		if (de && de->data && de->data->e_msg) {
+			if (!zstr_buf(gateway->register_network_ip)) {
+				strncpy(oregister_network_ip, gateway->register_network_ip, sizeof(oregister_network_ip) - 1);
+			}
+			sofia_glue_get_addr(de->data->e_msg, network_ip, sizeof(network_ip), &gateway->register_network_port);
+			if (!zstr_buf(network_ip)) {
+				snprintf(gateway->register_network_ip, sizeof(gateway->register_network_ip), (msg_addrinfo(de->data->e_msg))->ai_addr->sa_family == AF_INET6 ? "[%s]" : "%s", network_ip);
+			}
 		}
-		sofia_glue_get_addr(de->data->e_msg, network_ip, sizeof(network_ip), &gateway->register_network_port);
-		snprintf(gateway->register_network_ip, sizeof(gateway->register_network_ip), (msg_addrinfo(de->data->e_msg))->ai_addr->sa_family == AF_INET6 ? "[%s]" : "%s", network_ip);
 
 		switch (status) {
 		case 200:
@@ -2470,8 +2476,8 @@ void sofia_reg_handle_sip_r_register(int status,
 			break;
 		}
 		if (ostate != gateway->state ||
-			zstr_buf(oregister_network_ip) || strcmp(oregister_network_ip, gateway->register_network_ip)) {
-
+		    (!zstr_buf(gateway->register_network_ip) &&
+		     (zstr_buf(oregister_network_ip) || strcmp(oregister_network_ip, gateway->register_network_ip)))) {
 			sofia_reg_fire_custom_gateway_state_event(gateway, status, phrase);
 		}
 	}