res_pjsip: ami: Fix error in AMI output when an endpoint has no transport

When no transport is associated to an endpoint, the AMI output for
PJSIPShowEndpoint indicates an error instead of silently ignoring the
missing transport.

This patch causes the error to appear only if a transport was specified
on the endpoint and the transport doesn't exist.  It also fixes an issue
with counting the objects that were actually found.

ASTERISK-24161 #close
ASTERISK-24331 #close
Tested by: George Joseph
Review: https://reviewboard.asterisk.org/r/3998/
........

Merged revisions 423282 from http://svn.asterisk.org/svn/asterisk/branches/12
........

Merged revisions 423284 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@423285 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/res_pjsip.h

@@ -1727,6 +1727,8 @@ struct ast_sip_ami {
 	const char *action_id;
 	/*! user specified argument data */
 	void *arg;
+	/*! count of objects */
+	int count;
 };
 
 /*!

res/res_pjsip/config_auth.c

@@ -175,6 +175,8 @@ static int format_ami_auth_handler(void *obj, void *arg, int flags)
 	}
 
 	astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
+	ami->count++;
+
 	return 0;
 }
 

res/res_pjsip/config_transport.c

@@ -39,16 +39,20 @@ static int sip_transport_to_ami(const struct ast_sip_transport *transport,
 static int format_ami_endpoint_transport(const struct ast_sip_endpoint *endpoint,
 					 struct ast_sip_ami *ami)
 {
-	RAII_VAR(struct ast_str *, buf,
-		 ast_sip_create_ami_event("TransportDetail", ami), ast_free);
-	RAII_VAR(struct ast_sip_transport *,
-		 transport, ast_sorcery_retrieve_by_id(
-			 ast_sip_get_sorcery(), "transport",
-			 endpoint->transport), ao2_cleanup);
+	RAII_VAR(struct ast_str *, buf, NULL, ast_free);
+	RAII_VAR(struct ast_sip_transport *, transport, NULL, ao2_cleanup);
+
+	if (ast_strlen_zero(endpoint->transport)) {
+		return 0;
+	}
+
+	buf = ast_sip_create_ami_event("TransportDetail", ami);
 	if (!buf) {
 		return -1;
 	}
 
+	transport = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "transport",
+		endpoint->transport);
 	if (!transport) {
 		astman_send_error_va(ami->s, ami->m, "Unable to retrieve "
 				     "transport %s\n", endpoint->transport);
@@ -61,6 +65,8 @@ static int format_ami_endpoint_transport(const struct ast_sip_endpoint *endpoint
 		       ast_sorcery_object_get_id(endpoint));
 
 	astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
+	ami->count++;
+
 	return 0;
 }
 

res/res_pjsip/location.c

@@ -506,6 +506,8 @@ static int format_ami_aor_handler(void *obj, void *arg, int flags)
 		       ast_sorcery_object_get_id(endpoint));
 
 	astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
+	ami->count++;
+
 	return 0;
 }
 

res/res_pjsip/pjsip_configuration.c

@@ -1107,7 +1107,8 @@ static int format_ami_endpoint(const struct ast_sip_endpoint *endpoint,
 
 static int ami_show_endpoint(struct mansession *s, const struct message *m)
 {
-	struct ast_sip_ami ami = { .s = s, .m = m, .action_id = astman_get_header(m, "ActionID"), };
+	struct ast_sip_ami ami = { .s = s, .m = m, .action_id = astman_get_header(m, "ActionID"),
+		.count = 0, };
 	RAII_VAR(struct ast_sip_endpoint *, endpoint, NULL, ao2_cleanup);
 	const char *endpoint_name = astman_get_header(m, "Endpoint");
 	int count = 0;
@@ -1144,7 +1145,8 @@ static int ami_show_endpoint(struct mansession *s, const struct message *m)
 		astman_append(s, "ActionID: %s\r\n", ami.action_id);
 	}
 	astman_append(s, "EventList: Complete\r\n"
-		      "ListItems: %d\r\n\r\n", count + 1);
+		      "ListItems: %d\r\n\r\n", ami.count + 1);
+
 	return 0;
 }
 

res/res_pjsip/pjsip_options.c

@@ -995,7 +995,8 @@ static int format_contact_status(void *obj, void *arg, int flags)
 	ast_str_append(&buf, 0, "EndpointName: %s\r\n",
 			ast_sorcery_object_get_id(endpoint));
 	astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
-
+	ami->count++;
+	
 	ast_free(buf);
 	ao2_cleanup(status);
 	return 0;

res/res_pjsip_endpoint_identifier_ip.c

@@ -263,6 +263,8 @@ static int format_ami_endpoint_identify(const struct ast_sip_endpoint *endpoint,
 		ast_sorcery_object_get_id(endpoint));
 
 	astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
+	ami->count++;
+
 	return 0;
 }