load-tester: use a stream service to dispatch control connections

src/libcharon/plugins/load_tester/load_tester.c

@@ -35,7 +35,7 @@ static FILE* make_connection()
 	addr.sun_family = AF_UNIX;
 	strcpy(addr.sun_path, LOAD_TESTER_SOCKET);
 
-	fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
+	fd = socket(AF_UNIX, SOCK_STREAM, 0);
 	if (fd < 0)
 	{
 		fprintf(stderr, "opening socket failed: %s\n", strerror(errno));

src/libcharon/plugins/load_tester/load_tester_control.c

@@ -43,9 +43,9 @@ struct private_load_tester_control_t {
 	load_tester_control_t public;
 
 	/**
-	 * Load tester unix socket file descriptor
+	 * Load tester control stream service
 	 */
-	int socket;
+	stream_service_t *service;
 };
 
 /**
@@ -84,48 +84,6 @@ struct init_listener_t {
 	condvar_t *condvar;
 };
 
-/**
- * Open load-tester listening socket
- */
-static bool open_socket(private_load_tester_control_t *this)
-{
-	struct sockaddr_un addr;
-	mode_t old;
-
-	addr.sun_family = AF_UNIX;
-	strcpy(addr.sun_path, LOAD_TESTER_SOCKET);
-
-	this->socket = socket(AF_UNIX, SOCK_SEQPACKET, 0);
-	if (this->socket == -1)
-	{
-		DBG1(DBG_CFG, "creating load-tester socket failed");
-		return FALSE;
-	}
-	unlink(addr.sun_path);
-	old = umask(~(S_IRWXU | S_IRWXG));
-	if (bind(this->socket, (struct sockaddr*)&addr, sizeof(addr)) < 0)
-	{
-		DBG1(DBG_CFG, "binding load-tester socket failed: %s", strerror(errno));
-		close(this->socket);
-		return FALSE;
-	}
-	umask(old);
-	if (chown(addr.sun_path, lib->caps->get_uid(lib->caps),
-			  lib->caps->get_gid(lib->caps)) != 0)
-	{
-		DBG1(DBG_CFG, "changing load-tester socket permissions failed: %s",
-			 strerror(errno));
-	}
-	if (listen(this->socket, 10) < 0)
-	{
-		DBG1(DBG_CFG, "listening on load-tester socket failed: %s", strerror(errno));
-		close(this->socket);
-		unlink(addr.sun_path);
-		return FALSE;
-	}
-	return TRUE;
-}
-
 /**
  * Hashtable hash function
  */
@@ -215,9 +173,9 @@ static bool initiate_cb(init_listener_t *this, debug_t group, level_t level,
 }
 
 /**
- * Initiate load-test, write progress to stream
+ * Accept connections, initiate load-test, write progress to stream
  */
-static job_requeue_t initiate(FILE *stream)
+static bool on_accept(private_load_tester_control_t *this, stream_t *io)
 {
 	init_listener_t *listener;
 	enumerator_t *enumerator;
@@ -225,15 +183,23 @@ static job_requeue_t initiate(FILE *stream)
 	child_cfg_t *child_cfg;
 	u_int i, count, failed = 0, delay = 0;
 	char buf[16] = "";
+	FILE *stream;
 
+	stream = io->get_file(io);
+	if (!stream)
+	{
+		return FALSE;
+	}
 	fflush(stream);
 	if (fgets(buf, sizeof(buf), stream) == NULL)
 	{
-		return JOB_REQUEUE_NONE;
+		fclose(stream);
+		return FALSE;
 	}
 	if (sscanf(buf, "%u %u", &count, &delay) < 1)
 	{
-		return JOB_REQUEUE_NONE;
+		fclose(stream);
+		return FALSE;
 	}
 
 	INIT(listener,
@@ -308,50 +274,15 @@ static job_requeue_t initiate(FILE *stream)
 	free(listener);
 
 	fprintf(stream, "\n");
+	fclose(stream);
 
-	return JOB_REQUEUE_NONE;
-}
-
-/**
- * Accept load-tester control connections, dispatch
- */
-static job_requeue_t receive(private_load_tester_control_t *this)
-{
-	struct sockaddr_un addr;
-	int fd, len = sizeof(addr);
-	bool oldstate;
-	FILE *stream;
-
-	oldstate = thread_cancelability(TRUE);
-	fd = accept(this->socket, (struct sockaddr*)&addr, &len);
-	thread_cancelability(oldstate);
-
-	if (fd != -1)
-	{
-		stream = fdopen(fd, "r+");
-		if (stream)
-		{
-			DBG1(DBG_CFG, "client connected");
-			lib->processor->queue_job(lib->processor,
-				(job_t*)callback_job_create_with_prio(
-					(callback_job_cb_t)initiate, stream, (void*)fclose,
-					(callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
-		}
-		else
-		{
-			close(fd);
-		}
-	}
-	return JOB_REQUEUE_FAIR;
+	return FALSE;
 }
 
 METHOD(load_tester_control_t, destroy, void,
 	private_load_tester_control_t *this)
 {
-	if (this->socket != -1)
-	{
-		close(this->socket);
-	}
+	DESTROY_IF(this->service);
 	free(this);
 }
 
@@ -361,6 +292,7 @@ METHOD(load_tester_control_t, destroy, void,
 load_tester_control_t *load_tester_control_create()
 {
 	private_load_tester_control_t *this;
+	char *uri;
 
 	INIT(this,
 		.public = {
@@ -368,16 +300,18 @@ load_tester_control_t *load_tester_control_create()
 		},
 	);
 
-	if (open_socket(this))
+	uri = lib->settings->get_str(lib->settings,
+				"%s.plugins.load-tester.socket", "unix://" LOAD_TESTER_SOCKET,
+				charon->name);
+	this->service = lib->streams->create_service(lib->streams, uri, 10);
+	if (this->service)
 	{
-		lib->processor->queue_job(lib->processor, (job_t*)
-			callback_job_create_with_prio((callback_job_cb_t)receive, this, NULL,
-						(callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
+		this->service->on_accept(this->service, (stream_service_cb_t)on_accept,
+								 this, JOB_PRIO_CRITICAL, 0);
 	}
 	else
 	{
-		this->socket = -1;
+		DBG1(DBG_CFG, "creating load-tester control socket failed");
 	}
-
 	return &this->public;
 }