res_pjsip_pubsub: Ensure remote URI contains URI only.

This change makes it so that any user of the pubsub
API that requests the remote URI receives only the URI.
Previously the entire string was returned, which could
contain a display name.

ASTERISK-27290

Change-Id: If1d0cd6630f0a264856d31d2a67933109187a017

res/res_pjsip_pubsub.c

@@ -2441,9 +2441,14 @@ void ast_sip_subscription_get_local_uri(struct ast_sip_subscription *sub, char *
 void ast_sip_subscription_get_remote_uri(struct ast_sip_subscription *sub, char *buf, size_t size)
 {
 	pjsip_dialog *dlg;
+	pjsip_sip_uri *uri;
 
 	dlg = sub->tree->dlg;
-	ast_copy_pj_str(buf, &dlg->remote.info_str, size);
+	uri = pjsip_uri_get_uri(dlg->remote.info->uri);
+
+	if (pjsip_uri_print(PJSIP_URI_IN_FROMTO_HDR, uri, buf, size) < 0) {
+		*buf = '\0';
+	}
 }
 
 const char *ast_sip_subscription_get_resource_name(struct ast_sip_subscription *sub)