chan_sip: Always use fromdomain if set for domain, even if callerid is set to restricted.

(closes issue ASTERISK-20841)
Reported by: Kelly Goedert
........

Merged revisions 411021 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@411022 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -13819,7 +13819,9 @@ static void initreqprep(struct sip_request *req, struct sip_pvt *p, int sipmetho
 
 	snprintf(p->lastmsg, sizeof(p->lastmsg), "Init: %s", sip_methods[sipmethod].text);
 
-	d = S_OR(p->fromdomain, ast_sockaddr_stringify_host_remote(&p->ourip));
+	if (ast_strlen_zero(p->fromdomain)) {
+		d = ast_sockaddr_stringify_host_remote(&p->ourip);
+	}
 	if (p->owner) {
 		connected_id = ast_channel_connected_effective_id(p->owner);
 
@@ -13870,6 +13872,12 @@ static void initreqprep(struct sip_request *req, struct sip_pvt *p, int sipmetho
 	else /* Save for any further attempts */
 		ast_string_field_set(p, fromname, n);
 
+	/* Allow domain to be overridden */
+	if (!ast_strlen_zero(p->fromdomain))
+		d = p->fromdomain;
+	else /* Save for any further attempts */
+		ast_string_field_set(p, fromdomain, d);
+
 	ast_copy_string(tmp_l, l, sizeof(tmp_l));
 	if (sip_cfg.pedanticsipchecking) {
 		ast_escape_quoted(n, tmp_n, sizeof(tmp_n));