server: set permission and group to tdm-socket when it is added
[platform/core/uifw/libtdm.git] / src / tdm_server.c
index d92b7a1..9363768 100644 (file)
@@ -63,6 +63,7 @@ typedef struct _tdm_server_output_info {
        struct wl_resource *resource;
        tdm_output *output;
        struct list_head vblank_list;
+       unsigned int watch_output_changes;
 } tdm_server_output_info;
 
 typedef struct _tdm_server_vblank_info {
@@ -80,10 +81,44 @@ typedef struct _tdm_server_wait_info {
        unsigned int req_id;
 } tdm_server_wait_info;
 
+typedef struct _tdm_server_client_info {
+       struct list_head link;
+       pid_t pid;
+       char name[TDM_NAME_LEN];
+} tdm_server_client_info;
+
 static tdm_private_server *keep_private_server;
+static struct list_head client_list;
 
 static void destroy_wait(tdm_server_wait_info *wait_info);
 
+static void
+_tdm_server_get_process_name(pid_t pid, char *name, unsigned int size)
+{
+       char proc[TDM_NAME_LEN], pname[TDM_NAME_LEN];
+       FILE *h;
+       size_t len;
+
+       snprintf(name, size, "Unknown");
+
+       snprintf(proc, TDM_NAME_LEN, "/proc/%d/cmdline", pid);
+       h = fopen(proc, "r");
+       if (!h)
+               return;
+
+       len = fread(pname, sizeof(char), TDM_NAME_LEN, h);
+       if (len == 0) {
+               char *p = strncpy(pname, "NO NAME", sizeof(pname) - 1);
+               len = p - pname;
+       }
+       pname[len - 1] = '\0';
+
+       strncpy(name, pname, size - 1);
+       name[size - 1] = '\0';
+
+       fclose(h);
+}
+
 static tdm_output*
 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
 {
@@ -143,6 +178,8 @@ _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
        if (tdm_debug_module & TDM_DEBUG_VBLANK)
                TDM_INFO("req_id(%d) done", wait_info->req_id);
 
+       TDM_TRACE_COUNT(ServerDoneVBlank, wait_info->req_id);
+
        vblank_info = wait_info->vblank_info;
        wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
                                                        sequence, tv_sec, tv_usec, error);
@@ -161,9 +198,23 @@ _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
                                                         tdm_value value, void *user_data)
 {
        tdm_server_output_info *output_info = user_data;
+       struct wl_client *client;
+       pid_t pid = 0;
 
        TDM_RETURN_IF_FAIL(output_info != NULL);
 
+       client = wl_resource_get_client(output_info->resource);
+       TDM_RETURN_IF_FAIL(client != NULL);
+
+       wl_client_get_credentials(client, &pid, NULL, NULL);
+
+       if (!output_info->watch_output_changes) {
+               TDM_DBG("skip sending the output changes: pid(%d)", (unsigned int)pid);
+               return;
+       }
+
+       TDM_DBG("send the output changes: %d", (unsigned int)pid);
+
        switch (type) {
        case TDM_OUTPUT_CHANGE_DPMS:
                wl_tdm_output_send_dpms(output_info->resource, value.u32);
@@ -210,6 +261,14 @@ _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *reso
 }
 
 static void
+_tdm_server_vblank_cb_set_name(struct wl_client *client, struct wl_resource *resource, const char *name)
+{
+       tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
+
+       tdm_vblank_set_name(vblank_info->vblank, name);
+}
+
+static void
 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 {
        tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
@@ -241,9 +300,12 @@ _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *
        tdm_server_output_info *output_info = vblank_info->output_info;
        tdm_private_server *private_server = output_info->private_server;
        tdm_server_wait_info *wait_info;
+       unsigned int enable_fake = 0;
        tdm_error ret;
 
-       wait_info = calloc(1, sizeof *wait_info);
+       TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
+
+       wait_info = calloc(1, sizeof * wait_info);
        if (!wait_info) {
                TDM_ERR("alloc failed");
                ret = TDM_ERROR_OUT_OF_MEMORY;
@@ -258,19 +320,70 @@ _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *
                TDM_INFO("req_id(%d) wait", req_id);
 
        ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
+
+       tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
+       if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
+               goto wait_failed;
+
        TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 
        return;
 wait_failed:
        wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
+       if (wait_info)
+               destroy_wait(wait_info);
+}
+
+static void
+_tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
+                                                                         uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
+{
+       tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
+       tdm_server_output_info *output_info = vblank_info->output_info;
+       tdm_private_server *private_server = output_info->private_server;
+       tdm_server_wait_info *wait_info;
+       unsigned int enable_fake = 0;
+       tdm_error ret;
+
+       TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
+
+       wait_info = calloc(1, sizeof * wait_info);
+       if (!wait_info) {
+               TDM_ERR("alloc failed");
+               ret = TDM_ERROR_OUT_OF_MEMORY;
+               goto wait_failed;
+       }
+
+       LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
+       wait_info->vblank_info = vblank_info;
+       wait_info->req_id = req_id;
+
+       if (tdm_debug_module & TDM_DEBUG_VBLANK)
+               TDM_INFO("req_id(%d) wait", req_id);
+
+       ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
+
+       tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
+       if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
+               goto wait_failed;
+
+       TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
+
+       return;
+wait_failed:
+       wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
+       if (wait_info)
+               destroy_wait(wait_info);
 }
 
 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
        _tdm_server_vblank_cb_destroy,
+       _tdm_server_vblank_cb_set_name,
        _tdm_server_vblank_cb_set_fps,
        _tdm_server_vblank_cb_set_offset,
        _tdm_server_vblank_cb_set_enable_fake,
        _tdm_server_vblank_cb_wait_vblank,
+       _tdm_server_vblank_cb_wait_vblank_seq,
 };
 
 static void
@@ -306,7 +419,7 @@ _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource
                return;
        }
 
-       vblank_info = calloc(1, sizeof *vblank_info);
+       vblank_info = calloc(1, sizeof * vblank_info);
        if (!vblank_info) {
                wl_resource_post_no_memory(resource);
                wl_resource_destroy(vblank_resource);
@@ -320,15 +433,28 @@ _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource
        vblank_info->resource = vblank_resource;
        vblank_info->vblank = vblank;
 
+       tdm_vblank_set_resource(vblank, vblank_resource);
+
        wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
                                                                   vblank_info, destroy_vblank_callback);
 
        return;
 }
 
+static void
+_tdm_server_output_cb_watch_output_changes(struct wl_client *client, struct wl_resource *resource, unsigned int enable)
+{
+       tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
+
+       TDM_RETURN_IF_FAIL(output_info != NULL);
+
+       output_info->watch_output_changes = enable;
+}
+
 static const struct wl_tdm_output_interface tdm_output_implementation = {
        _tdm_server_output_cb_destroy,
        _tdm_server_output_cb_create_vblank,
+       _tdm_server_output_cb_watch_output_changes,
 };
 
 static void
@@ -419,24 +545,65 @@ _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, con
 {
        tdm_private_server *private_server = wl_resource_get_user_data(resource);
        tdm_private_loop *private_loop = private_server->private_loop;
-
        char message[TDM_SERVER_REPLY_MSG_LEN];
        int size = sizeof(message);
+       uid_t uid;
+
+       wl_client_get_credentials(client, NULL, &uid, NULL);
+
+       if (uid != 0) {
+               snprintf(message, size, "tdm-monitor: SHOULD be a superuser.\n");
+               TDM_ERR("%s", message);
+       } else {
+               tdm_monitor_server_command(private_loop->dpy, options, message, &size);
+       }
 
-       tdm_monitor_server_command(private_loop->dpy, options, message, &size);
        wl_tdm_send_debug_done(resource, message);
 }
 
+static void
+_tdm_server_cb_set_client_vblank_fps(struct wl_client *client, struct wl_resource *resource,
+                                                                        unsigned int pid, const char *name, unsigned int fps)
+{
+       tdm_error ret = tdm_vblank_set_client_vblank_fps(pid, name, fps);
+       TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
+
+       TDM_INFO("'%s' vblank fps(PID: '%u'): %u", name, pid, fps);
+}
+
 static const struct wl_tdm_interface tdm_implementation = {
-       _tdm_server_cb_create_output,
        _tdm_server_cb_debug,
+       _tdm_server_cb_create_output,
+       _tdm_server_cb_set_client_vblank_fps,
 };
 
 static void
+destroy_client(struct wl_resource *resource)
+{
+       tdm_server_client_info *c = NULL, *cc = NULL;
+       struct wl_client *client;
+       pid_t pid = -1;
+
+       client = wl_resource_get_client(resource);
+       TDM_RETURN_IF_FAIL(client != NULL);
+
+       wl_client_get_credentials(client, &pid, NULL, NULL);
+
+       LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
+               if (c->pid == pid) {
+                       LIST_DEL(&c->link);
+                       free(c);
+                       return;
+               }
+       }
+}
+
+static void
 _tdm_server_bind(struct wl_client *client, void *data,
                                 uint32_t version, uint32_t id)
 {
        struct wl_resource *resource;
+       tdm_server_client_info *cinfo;
 
        resource = wl_resource_create(client, &wl_tdm_interface, version, id);
        if (!resource) {
@@ -444,7 +611,121 @@ _tdm_server_bind(struct wl_client *client, void *data,
                return;
        }
 
-       wl_resource_set_implementation(resource, &tdm_implementation, data, NULL);
+       cinfo = calloc(1, sizeof(tdm_server_client_info));
+       if (!cinfo) {
+               wl_client_post_no_memory(client);
+               wl_resource_destroy(resource);
+               return;
+       }
+
+       LIST_ADDTAIL(&cinfo->link, &client_list);
+       wl_client_get_credentials(client, &cinfo->pid, NULL, NULL);
+       _tdm_server_get_process_name(cinfo->pid, cinfo->name, TDM_NAME_LEN);
+
+       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
@@ -452,14 +733,14 @@ tdm_server_init(tdm_private_loop *private_loop)
 {
        tdm_private_server *private_server;
 
-       if (private_loop->private_server)
-               return TDM_ERROR_NONE;
-
        TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
        TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 
-       if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
-               TDM_ERR("createing a tdm-socket failed");
+       if (private_loop->private_server)
+               return TDM_ERROR_NONE;
+
+       if (!_tdm_socket_init(private_loop)) {
+               TDM_ERR("initializing tdm-socket failed");
                return TDM_ERROR_OPERATION_FAILED;
        }
 
@@ -483,6 +764,8 @@ tdm_server_init(tdm_private_loop *private_loop)
        private_loop->private_server = private_server;
        keep_private_server = private_server;
 
+       LIST_INITHEAD(&client_list);
+
        return TDM_ERROR_NONE;
 }
 
@@ -491,6 +774,7 @@ tdm_server_deinit(tdm_private_loop *private_loop)
 {
        tdm_server_output_info *o = NULL, *oo = NULL;
        tdm_server_wait_info *w = NULL, *ww = NULL;
+       tdm_server_client_info *c = NULL, *cc = NULL;
        tdm_private_server *private_server;
 
        if (!private_loop->private_server)
@@ -509,4 +793,22 @@ tdm_server_deinit(tdm_private_loop *private_loop)
        free(private_server);
        private_loop->private_server = NULL;
        keep_private_server = NULL;
+
+       LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
+               LIST_DEL(&c->link);
+               free(c);
+       }
+}
+
+INTERN const char*
+tdm_server_get_client_name(pid_t pid)
+{
+       tdm_server_client_info *c = NULL;
+
+       LIST_FOR_EACH_ENTRY(c, &client_list, link) {
+               if (c->pid == pid)
+                       return (const char*)c->name;
+       }
+
+       return NULL;
 }