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 "config.h"
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <stddef.h>
  40 #include <unistd.h>
  41 #include <fcntl.h>
  42
  43 #include "tbm_bufmgr_int.h"
  44
  45 #include "wayland-tbm-drm-auth-client-protocol.h"
  46
  47 struct wayland_tbm_drm_auth_client {
  48         struct wl_display *display;
  49         struct wl_tbm_drm_auth *wl_tbm_drm_auth;
  50         int auth_fd;
  51         char *device;
  52         uint32_t capabilities;
  53 };
  54
  55 /* LCOV_EXCL_START */
  56 static void
  57 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)
  58 {
  59         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  60
  61         /* client authentication infomation */
  62         tbm_drm_client->auth_fd = auth_fd;
  63         tbm_drm_client->capabilities = capabilities;
  64         if (device_name)
  65             tbm_drm_client->device = strdup(device_name);
  66 }
  67
  68 static const struct wl_tbm_drm_auth_listener wl_tbm_drm_auth_client_listener = {
  69         handle_tbm_drm_authentication_info
  70 };
  71
  72 static void
  73 _wayland_tbm_drm_auth_client_registry_handle_global(void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
  74 {
  75         struct wayland_tbm_drm_auth_client *tbm_drm_client = (struct wayland_tbm_drm_auth_client *)data;
  76
  77         if (!strcmp(interface, "wl_tbm_drm_auth")) {
  78                 tbm_drm_client->wl_tbm_drm_auth = wl_registry_bind(registry, name, &wl_tbm_drm_auth_interface, version);
  79                 TBM_RETURN_IF_FAIL(tbm_drm_client->wl_tbm_drm_auth != NULL);
  80
  81                 wl_tbm_drm_auth_add_listener(tbm_drm_client->wl_tbm_drm_auth, &wl_tbm_drm_auth_client_listener, tbm_drm_client);
  82         }
  83 }
  84
  85 static const struct wl_registry_listener registry_listener = {
  86         _wayland_tbm_drm_auth_client_registry_handle_global,
  87         NULL
  88 };
  89
  90 int
  91 tbm_drm_helper_get_auth_info(int *auth_fd, char **device, uint32_t *capabilities)
  92 {
  93         struct wl_display *display;
  94         struct wl_registry *wl_registry;
  95         struct wayland_tbm_drm_auth_client *tbm_drm_client;
  96
  97         tbm_drm_client = calloc(1, sizeof(struct wayland_tbm_drm_auth_client));
  98         TBM_RETURN_VAL_IF_FAIL(tbm_drm_client != NULL, 0);
  99
 100         tbm_drm_client->auth_fd = -1;
 101
 102         display = wl_display_connect("tbm-drm-auth");
 103         if (!display) {
 104                 TBM_LOG_E("Failed to connect display\n");
 105                 free(tbm_drm_client);
 106
 107                 return 0;
 108         }
 109
 110         tbm_drm_client->display = display;
 111
 112         wl_registry = wl_display_get_registry(display);
 113         if (!wl_registry) {
 114                 TBM_LOG_E("Failed to get registry\n");
 115                 wl_display_disconnect(display);
 116                 free(tbm_drm_client);
 117
 118                 return 0;
 119         }
 120
 121         wl_registry_add_listener(wl_registry, &registry_listener, tbm_drm_client);
 122         if (wl_display_roundtrip(display) < 0) { //For Gloabl registry
 123                 TBM_LOG_E("Failed to wl_display_roundtrip for global registry\n");
 124                 wl_registry_destroy(wl_registry);
 125                 wl_display_disconnect(display);
 126                 free(tbm_drm_client);
 127                 return 0;
 128         }
 129
 130         if (!tbm_drm_client->wl_tbm_drm_auth) {
 131                 TBM_LOG_E("Failed to get wl_tbm_drm_auth interface\n");
 132                 wl_registry_destroy(wl_registry);
 133                 wl_display_disconnect(display);
 134                 free(tbm_drm_client);
 135
 136                 return 0;
 137         }
 138
 139         wl_tbm_drm_auth_get_authentication_info(tbm_drm_client->wl_tbm_drm_auth);
 140         if (wl_display_roundtrip(display) < 0) {
 141                 TBM_LOG_E("Failed to wl_display_roundtrip get auth info\n");
 142                 wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 143                 wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 144                 wl_registry_destroy(wl_registry);
 145                 wl_display_disconnect(display);
 146                 free(tbm_drm_client);
 147                 return 0;
 148         }
 149
 150         if (tbm_drm_client->auth_fd < 0) {
 151                 TBM_LOG_E("Failed to get auth info\n");
 152                 wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 153                 wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 154                 wl_registry_destroy(wl_registry);
 155                 wl_display_disconnect(display);
 156                 free(tbm_drm_client);
 157
 158                 return 0;
 159         }
 160
 161         if (auth_fd)
 162                 *auth_fd = tbm_drm_client->auth_fd;
 163         else
 164                 close(tbm_drm_client->auth_fd);
 165
 166         if (capabilities)
 167                 *capabilities = tbm_drm_client->capabilities;
 168
 169         if (device) {
 170                 if (tbm_drm_client->device)
 171                         *device = strdup(tbm_drm_client->device);
 172                 else
 173                         *device = NULL;
 174         }
 175
 176         wl_tbm_drm_auth_set_user_data(tbm_drm_client->wl_tbm_drm_auth, NULL);
 177         wl_tbm_drm_auth_destroy(tbm_drm_client->wl_tbm_drm_auth);
 178
 179         if (tbm_drm_client->device)
 180                 free(tbm_drm_client->device);
 181
 182         free(tbm_drm_client);
 183
 184         wl_registry_destroy(wl_registry);
 185         wl_display_disconnect(display);
 186
 187         return 1;
 188 }
 189
 190
 191 void
 192 tbm_drm_helper_set_fd(int fd)
 193 {
 194         char buf[32];
 195         int ret;
 196
 197         snprintf(buf, sizeof(buf), "%d", fd);
 198
 199         ret = setenv("TBM_DRM_FD", (const char*)buf, 1);
 200         if (ret) {
 201                 TBM_LOG_E("failed to set TBM_DRM_FD to %d\n", fd);
 202                 return;
 203         }
 204
 205         TBM_LOG_I("TBM_DRM_FD: %d\n", fd);
 206 }
 207
 208 void
 209 tbm_drm_helper_unset_fd(void)
 210 {
 211         int ret;
 212
 213         ret = unsetenv("TBM_DRM_FD");
 214         if (ret) {
 215                 TBM_LOG_E("failed to unset TBM_DRM_FD\n");
 216                 return;
 217         }
 218 }
 219
 220 int
 221 tbm_drm_helper_get_fd(void)
 222 {
 223         const char *value;
 224         int flags, fd = -1;
 225         int new_fd = -1;
 226         char *end;
 227         errno = 0;
 228
 229         value = (const char*)getenv("TBM_DRM_FD");
 230         if (!value)
 231                 return -1;
 232
 233         const long sl = strtol(value, &end, 10);
 234         if (end == value) {
 235                 TBM_LOG_E("%s: not a decimal number\n", value);
 236                 return -1;
 237         } else if (*end != '\0') {
 238                 TBM_LOG_E("%s: extra characters at end of input: %s\n", value, end);
 239                 return -1;
 240         } else if ((sl == LONG_MIN || sl == LONG_MAX) && errno == ERANGE) {
 241                 TBM_LOG_E("%s out of range of type long\n", value);
 242                 return -1;
 243         } else if (sl > INT_MAX) {
 244                 TBM_LOG_E("%ld greater than INT_MAX\n", sl);
 245                 return -1;
 246         } else if (sl < INT_MIN) {
 247                 TBM_LOG_E("%ld less than INT_MIN\n", sl);
 248                 return -1;
 249         } else {
 250                 fd = (int)sl;
 251                 if (fd < 0) {
 252                         TBM_LOG_E("%d out of fd range\n", fd);
 253                         return -1;
 254                 }
 255         }
 256
 257         TBM_LOG_I("TBM_DRM_FD: %d\n", fd);
 258
 259         flags = fcntl(fd, F_GETFD);
 260         if (flags == -1) {
 261                 TBM_LOG_E("fcntl failed: %m\n");
 262                 return -1;
 263         }
 264
 265         new_fd = dup(fd);
 266         if (new_fd < 0) {
 267                 TBM_LOG_E("dup failed: %m\n");
 268                 return -1;
 269         }
 270
 271         fcntl(new_fd, F_SETFD, flags|FD_CLOEXEC);
 272
 273         TBM_LOG_I("Return TBM_FD: %d\n", new_fd);
 274
 275         return new_fd;
 276 }
 277
 278 /* LCOV_EXCL_STOP */