server: set permission and group to tdm-socket when it is added

[platform/core/uifw/libtdm.git] / src / tdm_server.c

diff --git a/src/tdm_server.c b/src/tdm_server.c
index 5299c93..9363768 100644 (file)
--- a/src/tdm_server.c
+++ b/src/tdm_server.c
@@ -625,6 +625,109 @@ _tdm_server_bind(struct wl_client *client, void *data,
        wl_resource_set_implementation(resource, &tdm_implementation, data, destroy_client);
 }
 
+static int
+_tdm_getgrnam_r(const char *name)
+{
+       struct group *grp = NULL;
+       struct group *grp_res = NULL;
+       char* buf = NULL;
+       size_t buf_len;
+       int ret;
+       int id;
+
+       buf_len = sysconf(_SC_GETGR_R_SIZE_MAX);
+       if (buf_len == -1)
+               buf_len = 2048;
+
+       buf = calloc(1, buf_len * sizeof(char));
+       if (!buf) {
+               TDM_ERR("creating buffer failed");
+               goto failed;
+       }
+
+       grp = calloc(1, sizeof(struct group));
+       if (!grp) {
+               TDM_ERR("creating group failed");
+               goto failed;
+       }
+
+       ret = getgrnam_r(name, grp, buf, buf_len, &grp_res);
+       if (ret < 0) {
+               TDM_ERR("getgrnam_r failed errno:%d(%m)", ret);
+               goto failed;
+       }
+
+       if (grp_res == NULL) {
+               TDM_ERR("finding name:%s group failed", name);
+               goto failed;
+       }
+
+       id = grp->gr_gid;
+       free(buf);
+       free(grp);
+
+       return id;
+
+failed:
+       if (buf)
+               free(buf);
+       if (grp)
+               free(grp);
+
+       return -1;
+}
+
+static int
+_tdm_socket_init(tdm_private_loop *private_loop)
+{
+       const char *dir = NULL;
+       char socket_path[128];
+       int ret = -1;
+       uid_t uid;
+       gid_t gid;
+
+       if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
+               TDM_ERR("createing a tdm-socket failed");
+               return 0;
+       }
+
+       dir = getenv("XDG_RUNTIME_DIR");
+       if (!dir) {
+               TDM_ERR("getting XDG_RUNTIME_DIR failed");
+               return 0;
+       }
+
+       snprintf(socket_path, sizeof(socket_path), "%s/%s", dir, "tdm-socket");
+
+       ret = chmod(socket_path, 509);
+       if (ret < 0) {
+               TDM_ERR("changing modes of socket file failed:%s (%m)", socket_path);
+               return 0;
+       }
+
+       ret = _tdm_getgrnam_r("root");
+       if (ret < 0) {
+               TDM_ERR("getting uid failed");
+               return 0;
+       }
+       uid = ret;
+
+       ret = _tdm_getgrnam_r("display");
+       if (ret < 0) {
+               TDM_ERR("getting gid failed");
+               return 0;
+       }
+       gid = ret;
+
+       ret = chown(socket_path, uid, gid);
+       if (ret < 0) {
+               TDM_ERR("changing owner of socket file failed:%s (%m)", socket_path);
+               return 0;
+       }
+
+       return 1;
+}
+
 INTERN tdm_error
 tdm_server_init(tdm_private_loop *private_loop)
 {
@@ -636,8 +739,8 @@ tdm_server_init(tdm_private_loop *private_loop)
        if (private_loop->private_server)
                return TDM_ERROR_NONE;
 
-       if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
-               TDM_ERR("createing a tdm-socket failed");
+       if (!_tdm_socket_init(private_loop)) {
+               TDM_ERR("initializing tdm-socket failed");
                return TDM_ERROR_OPERATION_FAILED;
        }