src/tbm_drm_helper_client.c

   1 /**************************************************************************
   2
   3 libtbm
   4
   5 Copyright 2012 Samsung Electronics co., Ltd. All Rights Reserved.
   6
   7 Contact: SooChan Lim <sc1.lim@samsung.com>, Sangjin Lee <lsj119@samsung.com>
   8 Boram Park <boram1288.park@samsung.com>, Changyeon Lee <cyeon.lee@samsung.com>
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a
  11 copy of this software and associated documentation files (the
  12 "Software"), to deal in the Software without restriction, including
  13 without limitation the rights to use, copy, modify, merge, publish,
  14 distribute, sub license, and/or sell copies of the Software, and to
  15 permit persons to whom the Software is furnished to do so, subject to
  16 the following conditions:
  17
  18 The above copyright notice and this permission notice (including the
  19 next paragraph) shall be included in all copies or substantial portions
  20 of the Software.
  21
  22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  25 IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  27 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  28 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 **************************************************************************/
  31
  32 #define WL_HIDE_DEPRECATED
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <stddef.h>
  38 #include <unistd.h>
  39 #include <fcntl.h>
  40
  41 #include "tbm_bufmgr_int.h"
  42
  43 #include "wayland-tbm-drm-auth-client-protocol.h"
  44
  45 struct wayland_tbm_drm_auth_client {
  46         struct wl_display *display;
  47         struct wl_tbm_drm_auth *wl_tbm_drm_auth;
  48         int auth_fd;
  49         char *device;
  50         uint32_t capabilities;
  51 };
  52
  53 static void
  54 handle_tbm_drm_authentication_info(void *data, struct wl_tbm_drm_auth *wl_tbm_drm_auth, const char *device_name, uint32_t capabilities, int32_t auth_fd)
  55 {
  56         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  57
  58         /* client authentication infomation */
  59         tbm_drm_client->auth_fd = auth_fd;
  60         tbm_drm_client->capabilities = capabilities;
  61         if (device_name)
  62             tbm_drm_client->device = strdup(device_name);
  63 }
  64
  65 static const struct wl_tbm_drm_auth_listener wl_tbm_drm_auth_client_listener = {
  66     handle_tbm_drm_authentication_info
  67 };
  68
  69 static void
  70 _wayland_tbm_drm_auth_client_registry_handle_global(void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
  71 {
  72         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  73
  74         if (!strcmp(interface, "wl_tbm_drm_auth")) {
  75                 tbm_drm_client->wl_tbm_drm_auth = wl_registry_bind(registry, name, &wl_tbm_drm_auth_interface, version);
  76                 TBM_RETURN_IF_FAIL(tbm_drm_client->wl_tbm_drm_auth != NULL);
  77
  78                 wl_tbm_drm_auth_add_listener(tbm_drm_client->wl_tbm_drm_auth, &wl_tbm_drm_auth_client_listener, tbm_drm_client);
  79         }
  80 }
  81
  82 static const struct wl_registry_listener registry_listener = {
  83     _wayland_tbm_drm_auth_client_registry_handle_global,
  84     NULL
  85 };
  86
  87 int
  88 tbm_drm_helper_get_auth_info(int *auth_fd, char **device, uint32_t *capabilities)
  89 {
  90         struct wl_display *display;
  91         struct wl_registry *wl_registry;
  92         struct wayland_tbm_drm_auth_client *tbm_drm_client;
  93
  94         tbm_drm_client = calloc(1, sizeof(struct wayland_tbm_drm_auth_client));
  95         TBM_RETURN_VAL_IF_FAIL(tbm_drm_client != NULL, 0);
  96
  97         tbm_drm_client->auth_fd = -1;
  98
  99         display = wl_display_connect("tbm-drm-auth");
 100         if (!display) {
 101                 TBM_LOG("Failed to connect display\n");
 102                 free(tbm_drm_client);
 103
 104                 return 0;
 105         }
 106
 107         tbm_drm_client->display = display;
 108
 109         wl_registry = wl_display_get_registry(display);
 110         if (!wl_registry) {
 111                 TBM_LOG("Failed to get registry\n");
 112                 wl_display_disconnect(display);
 113                 free(tbm_drm_client);
 114
 115                 return 0;
 116         }
 117
 118         wl_registry_add_listener(wl_registry, &registry_listener, tbm_drm_client);
 119         wl_display_roundtrip(display); //For Gloabl registry
 120         wl_tbm_drm_auth_get_authentication_info(tbm_drm_client->wl_tbm_drm_auth);
 121         wl_display_roundtrip(display);
 122
 123         if (!tbm_drm_client->wl_tbm_drm_auth) {
 124                 TBM_LOG("Failed to get wl_tbm_drm_auth interface\n");
 125                 wl_registry_destroy(wl_registry);
 126                 wl_display_disconnect(display);
 127                 free(tbm_drm_client);
 128
 129                 return 0;
 130         }
 131
 132         if (tbm_drm_client->auth_fd < 0) {
 133                 TBM_LOG("Failed to get auth info\n");
 134                 wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 135                 wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 136                 wl_registry_destroy(wl_registry);
 137                 wl_display_disconnect(display);
 138                 free(tbm_drm_client);
 139
 140                 return 0;
 141         }
 142
 143         if (auth_fd)
 144                 *auth_fd = tbm_drm_client->auth_fd;
 145         else
 146                 close(*auth_fd);
 147
 148         if (capabilities)
 149                 *capabilities = tbm_drm_client->capabilities;
 150
 151         if (device) {
 152                 if (tbm_drm_client->device)
 153                         *device = strdup(tbm_drm_client->device);
 154                 else
 155                         *device = NULL;
 156         }
 157
 158         wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 159         wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 160
 161         if (tbm_drm_client->device)
 162                 free(tbm_drm_client->device);
 163
 164         free(tbm_drm_client);
 165
 166         wl_registry_destroy(wl_registry);
 167         wl_display_disconnect(display);
 168
 169         return 1;
 170 }