Add initial version

[src/drm-lease-manager.git] / common / socket-path.c

diff --git a/common/socket-path.c b/common/socket-path.c
new file mode 100644 (file)
index 0000000..7a412da
--- /dev/null
+++ b/common/socket-path.c
@@ -0,0 +1,48 @@
+/* Copyright 2020-2021 IGEL Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "socket-path.h"
+#include "config.h"
+#include "log.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define RUNTIME_PATH DLM_DEFAULT_RUNTIME_PATH
+
+bool sockaddr_set_lease_server_path(struct sockaddr_un *sa,
+                                   const char *lease_name)
+{
+       int maxlen = sizeof(sa->sun_path);
+       char *socket_dir = getenv("DLM_RUNTIME_PATH") ?: RUNTIME_PATH;
+
+       int len =
+           snprintf(sa->sun_path, maxlen, "%s/%s", socket_dir, lease_name);
+
+       if (len < 0) {
+               DEBUG_LOG("Socket path creation failed: %s\n", strerror(errno));
+               return false;
+       }
+       if (len >= maxlen) {
+               errno = ENAMETOOLONG;
+               DEBUG_LOG("Socket directoy path too long. "
+                         "Full path to socket must be less than %d bytes\n",
+                         maxlen);
+               return false;
+       }
+       return true;
+}