src/tdm_server.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <sc1.lim@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm.h"
  41 #include "tdm_private.h"
  42 #include "tdm_list.h"
  43 #include "tdm-server-protocol.h"
  44
  45 /* CAUTION:
  46  * - tdm server doesn't care about thread things.
  47  * - DO NOT use the TDM internal functions here.
  48  *     However, the internal function which does lock/unlock the mutex of
  49  *     private_display in itself can be called.
  50  * - DO NOT use the tdm_private_display structure here.
  51  * - The callback function things can be called in main thread.
  52  */
  53
  54 struct _tdm_private_server {
  55         tdm_private_loop *private_loop;
  56         struct list_head output_list;
  57         struct list_head wait_list;
  58 };
  59
  60 typedef struct _tdm_server_output_info {
  61         struct list_head link;
  62         tdm_private_server *private_server;
  63         struct wl_resource *resource;
  64         tdm_output *output;
  65         struct list_head vblank_list;
  66         unsigned int watch_output_changes;
  67 } tdm_server_output_info;
  68
  69 typedef struct _tdm_server_vblank_info {
  70         struct list_head link;
  71         tdm_server_output_info *output_info;
  72         struct wl_resource *resource;
  73
  74         tdm_vblank *vblank;
  75 } tdm_server_vblank_info;
  76
  77 typedef struct _tdm_server_wait_info {
  78         struct list_head link;
  79         tdm_server_vblank_info *vblank_info;
  80
  81         unsigned int req_id;
  82 } tdm_server_wait_info;
  83
  84 typedef struct _tdm_server_client_info {
  85         struct list_head link;
  86         pid_t pid;
  87         char name[TDM_NAME_LEN];
  88 } tdm_server_client_info;
  89
  90 static tdm_private_server *keep_private_server;
  91 static struct list_head client_list;
  92
  93 static void destroy_wait(tdm_server_wait_info *wait_info);
  94
  95 static void
  96 _tdm_server_get_process_name(pid_t pid, char *name, unsigned int size)
  97 {
  98         char proc[TDM_NAME_LEN], pname[TDM_NAME_LEN];
  99         FILE *h;
 100         size_t len;
 101
 102         snprintf(name, size, "Unknown");
 103
 104         snprintf(proc, TDM_NAME_LEN, "/proc/%d/cmdline", pid);
 105         h = fopen(proc, "r");
 106         if (!h)
 107                 return;
 108
 109         len = fread(pname, sizeof(char), TDM_NAME_LEN, h);
 110         if (len == 0) {
 111                 char *p = strncpy(pname, "NO NAME", sizeof(pname) - 1);
 112                 len = p - pname;
 113         }
 114         pname[len - 1] = '\0';
 115
 116         strncpy(name, pname, size - 1);
 117         name[size - 1] = '\0';
 118
 119         fclose(h);
 120 }
 121
 122 static tdm_output*
 123 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
 124 {
 125         tdm_private_loop *private_loop = private_server->private_loop;
 126         tdm_output *found = NULL;
 127
 128         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
 129                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
 130
 131         if (!found) {
 132                 int count = 0, i;
 133
 134                 tdm_display_get_output_count(private_loop->dpy, &count);
 135
 136                 for (i = 0; i < count; i++) {
 137                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 138                         tdm_output_conn_status status;
 139                         const char *model = NULL;
 140                         tdm_error ret;
 141
 142                         ret = tdm_output_get_conn_status(output, &status);
 143                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 144                                 continue;
 145
 146                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 147                         if (ret || !model)
 148                                 continue;
 149
 150                         if (strncmp(model, name, TDM_NAME_LEN))
 151                                 continue;
 152
 153                         found = output;
 154                         break;
 155                 }
 156         }
 157
 158         return found;
 159 }
 160
 161 static void
 162 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 163                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 164 {
 165         tdm_server_wait_info *found;
 166         tdm_server_vblank_info *vblank_info;
 167
 168         if (!keep_private_server)
 169                 return;
 170
 171         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 172                                    tdm_server_wait_info, link, found);
 173         if (!found) {
 174                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 175                 return;
 176         }
 177
 178         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 179                 TDM_DBG("req_id(%d) done", wait_info->req_id);
 180
 181         TDM_TRACE_COUNT(ServerDoneVBlank, wait_info->req_id);
 182
 183         vblank_info = wait_info->vblank_info;
 184         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 185                                                         sequence, tv_sec, tv_usec, error);
 186         destroy_wait(wait_info);
 187 }
 188
 189 static void
 190 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 191                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 192 {
 193         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 194 }
 195
 196 static void
 197 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 198                                                          tdm_value value, void *user_data)
 199 {
 200         tdm_server_output_info *output_info = user_data;
 201         struct wl_client *client;
 202         pid_t pid = 0;
 203
 204         TDM_RETURN_IF_FAIL(output_info != NULL);
 205
 206         client = wl_resource_get_client(output_info->resource);
 207         TDM_RETURN_IF_FAIL(client != NULL);
 208
 209         wl_client_get_credentials(client, &pid, NULL, NULL);
 210
 211         if (!output_info->watch_output_changes) {
 212                 TDM_DBG("skip sending the output changes: pid(%d)", (unsigned int)pid);
 213                 return;
 214         }
 215
 216         TDM_DBG("send the output changes: %d", (unsigned int)pid);
 217
 218         switch (type) {
 219         case TDM_OUTPUT_CHANGE_DPMS:
 220                 wl_tdm_output_send_dpms(output_info->resource, value.u32, TDM_ERROR_NONE);
 221                 break;
 222         case TDM_OUTPUT_CHANGE_CONNECTION:
 223                 wl_tdm_output_send_connection(output_info->resource, value.u32, TDM_ERROR_NONE);
 224                 break;
 225         default:
 226                 break;
 227         }
 228 }
 229
 230 static void
 231 destroy_wait(tdm_server_wait_info *wait_info)
 232 {
 233         LIST_DEL(&wait_info->link);
 234         free(wait_info);
 235 }
 236
 237 static void
 238 destroy_vblank_callback(struct wl_resource *resource)
 239 {
 240         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 241         tdm_server_wait_info *w = NULL, *ww = NULL;
 242
 243         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 244
 245         if (vblank_info->vblank)
 246                 tdm_vblank_destroy(vblank_info->vblank);
 247
 248         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 249                 if (w->vblank_info == vblank_info)
 250                         destroy_wait(w);
 251         }
 252
 253         LIST_DEL(&vblank_info->link);
 254         free(vblank_info);
 255 }
 256
 257 static void
 258 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 259 {
 260         wl_resource_destroy(resource);
 261 }
 262
 263 static void
 264 _tdm_server_vblank_cb_set_name(struct wl_client *client, struct wl_resource *resource, const char *name)
 265 {
 266         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 267
 268         tdm_vblank_set_name(vblank_info->vblank, name);
 269 }
 270
 271 static void
 272 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 273 {
 274         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 275
 276         tdm_vblank_set_fps(vblank_info->vblank, fps);
 277 }
 278
 279 static void
 280 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 281 {
 282         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 283
 284         tdm_vblank_set_offset(vblank_info->vblank, offset);
 285 }
 286
 287 static void
 288 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 289 {
 290         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 291
 292         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 293 }
 294
 295 static void
 296 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 297                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 298 {
 299         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 300         tdm_server_output_info *output_info = vblank_info->output_info;
 301         tdm_private_server *private_server = output_info->private_server;
 302         tdm_server_wait_info *wait_info;
 303         unsigned int enable_fake = 0;
 304         tdm_error ret;
 305
 306         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 307
 308         wait_info = calloc(1, sizeof * wait_info);
 309         if (!wait_info) {
 310                 TDM_ERR("alloc failed");
 311                 ret = TDM_ERROR_OUT_OF_MEMORY;
 312                 goto wait_failed;
 313         }
 314
 315         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 316         wait_info->vblank_info = vblank_info;
 317         wait_info->req_id = req_id;
 318
 319         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 320                 TDM_DBG("req_id(%d) wait", req_id);
 321
 322         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 323
 324         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 325         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 326                 goto wait_failed;
 327
 328         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 329
 330         return;
 331 wait_failed:
 332         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 333         if (wait_info)
 334                 destroy_wait(wait_info);
 335 }
 336
 337 static void
 338 _tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
 339                                                                           uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 340 {
 341         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 342         tdm_server_output_info *output_info = vblank_info->output_info;
 343         tdm_private_server *private_server = output_info->private_server;
 344         tdm_server_wait_info *wait_info;
 345         unsigned int enable_fake = 0;
 346         tdm_error ret;
 347
 348         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 349
 350         wait_info = calloc(1, sizeof * wait_info);
 351         if (!wait_info) {
 352                 TDM_ERR("alloc failed");
 353                 ret = TDM_ERROR_OUT_OF_MEMORY;
 354                 goto wait_failed;
 355         }
 356
 357         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 358         wait_info->vblank_info = vblank_info;
 359         wait_info->req_id = req_id;
 360
 361         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 362                 TDM_DBG("req_id(%d) wait", req_id);
 363
 364         ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
 365
 366         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 367         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 368                 goto wait_failed;
 369
 370         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 371
 372         return;
 373 wait_failed:
 374         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 375         if (wait_info)
 376                 destroy_wait(wait_info);
 377 }
 378
 379 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 380         _tdm_server_vblank_cb_destroy,
 381         _tdm_server_vblank_cb_set_name,
 382         _tdm_server_vblank_cb_set_fps,
 383         _tdm_server_vblank_cb_set_offset,
 384         _tdm_server_vblank_cb_set_enable_fake,
 385         _tdm_server_vblank_cb_wait_vblank,
 386         _tdm_server_vblank_cb_wait_vblank_seq,
 387 };
 388
 389 static void
 390 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 391 {
 392         wl_resource_destroy(resource);
 393 }
 394
 395 static void
 396 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 397 {
 398         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 399         tdm_private_server *private_server = output_info->private_server;
 400         tdm_private_loop *private_loop = private_server->private_loop;
 401         struct wl_resource *vblank_resource;
 402         tdm_vblank *vblank;
 403         tdm_server_vblank_info *vblank_info;
 404
 405         vblank_resource =
 406                 wl_resource_create(client, &wl_tdm_vblank_interface,
 407                                                    wl_resource_get_version(resource), id);
 408         if (!vblank_resource) {
 409                 wl_resource_post_no_memory(resource);
 410                 TDM_ERR("wl_resource_create failed");
 411                 return;
 412         }
 413
 414         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 415         if (!vblank) {
 416                 wl_resource_post_no_memory(resource);
 417                 wl_resource_destroy(vblank_resource);
 418                 TDM_ERR("tdm_vblank_create failed");
 419                 return;
 420         }
 421
 422         vblank_info = calloc(1, sizeof * vblank_info);
 423         if (!vblank_info) {
 424                 wl_resource_post_no_memory(resource);
 425                 wl_resource_destroy(vblank_resource);
 426                 tdm_vblank_destroy(vblank);
 427                 TDM_ERR("alloc failed");
 428                 return;
 429         }
 430
 431         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 432         vblank_info->output_info = output_info;
 433         vblank_info->resource = vblank_resource;
 434         vblank_info->vblank = vblank;
 435
 436         tdm_vblank_set_resource(vblank, vblank_resource);
 437
 438         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 439                                                                    vblank_info, destroy_vblank_callback);
 440
 441         return;
 442 }
 443
 444 static void
 445 _tdm_server_output_cb_watch_output_changes(struct wl_client *client, struct wl_resource *resource, unsigned int enable)
 446 {
 447         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 448
 449         TDM_RETURN_IF_FAIL(output_info != NULL);
 450
 451         output_info->watch_output_changes = enable;
 452 }
 453
 454 static void
 455 _tdm_server_output_cb_get_connection(struct wl_client *client, struct wl_resource *resource)
 456 {
 457         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 458         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 459         tdm_error ret;
 460
 461         TDM_RETURN_IF_FAIL(output_info != NULL);
 462
 463         ret = tdm_output_get_conn_status(output_info->output, &status);
 464         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 465
 466         wl_tdm_output_send_connection(output_info->resource, status, ret);
 467
 468         return;
 469
 470 failed:
 471         wl_tdm_output_send_connection(output_info->resource, TDM_OUTPUT_CONN_STATUS_DISCONNECTED, ret);
 472 }
 473
 474 static void
 475 _tdm_server_output_cb_get_mode(struct wl_client *client, struct wl_resource *resource)
 476 {
 477         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 478         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 479         tdm_error ret;
 480
 481         TDM_RETURN_IF_FAIL(output_info != NULL);
 482
 483         ret = tdm_output_get_conn_status(output_info->output, &status);
 484         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 485
 486         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 487                 const tdm_output_mode *mode = NULL;
 488                 unsigned int hdisplay, vdisplay, vrefresh;
 489
 490                 ret = tdm_output_get_mode(output_info->output, &mode);
 491                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 492
 493                 hdisplay = (mode) ? mode->hdisplay : 0;
 494                 vdisplay = (mode) ? mode->vdisplay : 0;
 495                 vrefresh = (mode) ? mode->vrefresh : 0;
 496
 497                 wl_tdm_output_send_mode(output_info->resource, hdisplay, vdisplay, vrefresh, ret);
 498         } else {
 499                 wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 500         }
 501
 502         return;
 503 failed:
 504         wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, ret);
 505 }
 506
 507 static void
 508 _tdm_server_output_cb_get_dpms(struct wl_client *client, struct wl_resource *resource)
 509 {
 510         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 511         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 512         tdm_error ret;
 513
 514         TDM_RETURN_IF_FAIL(output_info != NULL);
 515
 516         ret = tdm_output_get_conn_status(output_info->output, &status);
 517         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 518
 519         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 520                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 521
 522                 ret = tdm_output_get_dpms(output_info->output, &dpms_value);
 523                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 524
 525                 wl_tdm_output_send_dpms(output_info->resource, dpms_value, ret);
 526         } else {
 527                 wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 528         }
 529
 530         return;
 531 failed:
 532         wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, ret);
 533 }
 534
 535 static const struct wl_tdm_output_interface tdm_output_implementation = {
 536         _tdm_server_output_cb_destroy,
 537         _tdm_server_output_cb_create_vblank,
 538         _tdm_server_output_cb_watch_output_changes,
 539         _tdm_server_output_cb_get_connection,
 540         _tdm_server_output_cb_get_mode,
 541         _tdm_server_output_cb_get_dpms,
 542 };
 543
 544 static void
 545 destroy_output_callback(struct wl_resource *resource)
 546 {
 547         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 548         tdm_server_vblank_info *v = NULL, *vv = NULL;
 549
 550         TDM_RETURN_IF_FAIL(output_info != NULL);
 551
 552         tdm_output_remove_change_handler(output_info->output,
 553                                                                          _tdm_server_cb_output_change, output_info);
 554
 555         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 556                 wl_resource_destroy(v->resource);
 557         }
 558
 559         LIST_DEL(&output_info->link);
 560         free(output_info);
 561 }
 562
 563 static void
 564 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 565                                                          const char *name, uint32_t id)
 566 {
 567         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 568         tdm_server_output_info *output_info;
 569         struct wl_resource *output_resource = NULL;
 570         tdm_output *output;
 571         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 572         tdm_error ret;
 573
 574         output = _tdm_server_find_output(private_server, name);
 575         if (!output) {
 576                 TDM_ERR("There is no '%s' output", name);
 577                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 578                                                            "There is no '%s' output", name);
 579                 return;
 580         }
 581
 582         output_resource =
 583                 wl_resource_create(client, &wl_tdm_output_interface,
 584                                                    wl_resource_get_version(resource), id);
 585         if (!output_resource) {
 586                 wl_resource_post_no_memory(resource);
 587                 TDM_ERR("wl_resource_create failed");
 588                 return;
 589         }
 590
 591         output_info = calloc(1, sizeof * output_info);
 592         if (!output_info) {
 593                 wl_resource_post_no_memory(resource);
 594                 wl_resource_destroy(output_resource);
 595                 TDM_ERR("alloc failed");
 596                 return;
 597         }
 598
 599         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 600         output_info->private_server = private_server;
 601         output_info->resource = output_resource;
 602         output_info->output = output;
 603         LIST_INITHEAD(&output_info->vblank_list);
 604
 605         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 606
 607         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 608                                                                    output_info, destroy_output_callback);
 609
 610         ret = tdm_output_get_conn_status(output, &status);
 611         wl_tdm_output_send_connection(output_resource, status, ret);
 612
 613         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 614                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 615                 const tdm_output_mode *mode = NULL;
 616                 unsigned int hdisplay, vdisplay, vrefresh;
 617
 618                 ret = tdm_output_get_mode(output, &mode);
 619                 hdisplay = (mode) ? mode->hdisplay : 0;
 620                 vdisplay = (mode) ? mode->vdisplay : 0;
 621                 vrefresh = (mode) ? mode->vrefresh : 0;
 622                 wl_tdm_output_send_mode(output_resource, hdisplay, vdisplay, vrefresh, ret);
 623
 624                 ret = tdm_output_get_dpms(output, &dpms_value);
 625                 wl_tdm_output_send_dpms(output_resource, dpms_value, ret);
 626         } else {
 627                 wl_tdm_output_send_mode(output_resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 628                 wl_tdm_output_send_dpms(output_resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 629         }
 630 }
 631
 632 static void
 633 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 634 {
 635         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 636         tdm_private_loop *private_loop = private_server->private_loop;
 637         char message[TDM_SERVER_REPLY_MSG_LEN];
 638         char *m;
 639         int len = sizeof(message), size;
 640         uid_t uid;
 641
 642         wl_client_get_credentials(client, NULL, &uid, NULL);
 643
 644         if (uid != 0) {
 645                 snprintf(message, len, "tdm-monitor: SHOULD be a superuser.\n");
 646                 TDM_ERR("%s", message);
 647         } else {
 648                 tdm_monitor_server_command(private_loop->dpy, options, message, &len);
 649         }
 650
 651         size = sizeof(message) - len;
 652         m = message;
 653
 654         wl_client_flush(client);
 655
 656         while (size > 0) {
 657                 char buffer[TDM_DEBUG_REPLY_MSG_LEN];
 658                 int copylen = TDM_MIN(size, sizeof(buffer) - 1);
 659
 660                 strncpy(buffer, m, copylen);
 661                 m += copylen;
 662                 size -= copylen;
 663
 664                 buffer[copylen] = '\0';
 665
 666                 wl_tdm_send_debug_message(resource, buffer);
 667         }
 668
 669         wl_tdm_send_debug_done(resource);
 670 }
 671
 672 static void
 673 _tdm_server_cb_set_client_vblank_fps(struct wl_client *client, struct wl_resource *resource,
 674                                                                          unsigned int pid, const char *name, unsigned int fps)
 675 {
 676         tdm_error ret = tdm_vblank_set_client_vblank_fps(pid, name, fps);
 677         TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
 678
 679         TDM_INFO("'%s' vblank fps(PID: '%u'): %u", name, pid, fps);
 680 }
 681
 682 static const struct wl_tdm_interface tdm_implementation = {
 683         _tdm_server_cb_debug,
 684         _tdm_server_cb_create_output,
 685         _tdm_server_cb_set_client_vblank_fps,
 686 };
 687
 688 static void
 689 destroy_client(struct wl_resource *resource)
 690 {
 691         tdm_server_client_info *c = NULL, *cc = NULL;
 692         struct wl_client *client;
 693         pid_t pid = -1;
 694
 695         client = wl_resource_get_client(resource);
 696         TDM_RETURN_IF_FAIL(client != NULL);
 697
 698         wl_client_get_credentials(client, &pid, NULL, NULL);
 699
 700         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 701                 if (c->pid == pid) {
 702                         LIST_DEL(&c->link);
 703                         free(c);
 704                         return;
 705                 }
 706         }
 707 }
 708
 709 static void
 710 _tdm_server_bind(struct wl_client *client, void *data,
 711                                  uint32_t version, uint32_t id)
 712 {
 713         struct wl_resource *resource;
 714         tdm_server_client_info *cinfo;
 715
 716         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 717         if (!resource) {
 718                 wl_client_post_no_memory(client);
 719                 return;
 720         }
 721
 722         cinfo = calloc(1, sizeof(tdm_server_client_info));
 723         if (!cinfo) {
 724                 wl_client_post_no_memory(client);
 725                 wl_resource_destroy(resource);
 726                 return;
 727         }
 728
 729         LIST_ADDTAIL(&cinfo->link, &client_list);
 730         wl_client_get_credentials(client, &cinfo->pid, NULL, NULL);
 731         _tdm_server_get_process_name(cinfo->pid, cinfo->name, TDM_NAME_LEN);
 732
 733         wl_resource_set_implementation(resource, &tdm_implementation, data, destroy_client);
 734 }
 735
 736 static int
 737 _tdm_getgrnam_r(const char *name)
 738 {
 739         struct group *grp = NULL;
 740         struct group *grp_res = NULL;
 741         char* buf = NULL;
 742         size_t buf_len;
 743         int ret;
 744         int id;
 745
 746         buf_len = sysconf(_SC_GETGR_R_SIZE_MAX);
 747         if (buf_len == -1)
 748                 buf_len = 2048;
 749
 750         buf = calloc(1, buf_len * sizeof(char));
 751         if (!buf) {
 752                 TDM_ERR("creating buffer failed");
 753                 goto failed;
 754         }
 755
 756         grp = calloc(1, sizeof(struct group));
 757         if (!grp) {
 758                 TDM_ERR("creating group failed");
 759                 goto failed;
 760         }
 761
 762         ret = getgrnam_r(name, grp, buf, buf_len, &grp_res);
 763         if (ret < 0) {
 764                 TDM_ERR("getgrnam_r failed errno:%d(%m)", ret);
 765                 goto failed;
 766         }
 767
 768         if (grp_res == NULL) {
 769                 TDM_ERR("finding name:%s group failed", name);
 770                 goto failed;
 771         }
 772
 773         id = grp->gr_gid;
 774         free(buf);
 775         free(grp);
 776
 777         return id;
 778
 779 failed:
 780         if (buf)
 781                 free(buf);
 782         if (grp)
 783                 free(grp);
 784
 785         return -1;
 786 }
 787
 788 static void
 789 _tdm_socket_init(tdm_private_loop *private_loop)
 790 {
 791         const char *dir = NULL;
 792         char socket_path[128];
 793         int size;
 794         int ret = -1;
 795         uid_t uid;
 796         gid_t gid;
 797
 798         dir = getenv("XDG_RUNTIME_DIR");
 799         if (!dir) {
 800                 TDM_WRN("getting XDG_RUNTIME_DIR failed");
 801                 return;
 802         }
 803
 804         size = snprintf(socket_path, sizeof(socket_path), "%s/%s", dir, "tdm-socket");
 805         if (size >= (int)sizeof(socket_path)) {
 806                 TDM_WRN("too long: %s/tdm-socket", dir);
 807                 return;
 808         };
 809
 810         ret = chmod(socket_path, 509);
 811         if (ret < 0) {
 812                 TDM_WRN("changing modes of socket file failed:%s (%m)", socket_path);
 813                 return;
 814         }
 815
 816         ret = _tdm_getgrnam_r("root");
 817         if (ret < 0) {
 818                 TDM_WRN("getting uid failed");
 819                 return;
 820         }
 821         uid = ret;
 822
 823         ret = _tdm_getgrnam_r("display");
 824         if (ret < 0) {
 825                 TDM_WRN("getting gid failed");
 826                 return;
 827         }
 828         gid = ret;
 829
 830         ret = chown(socket_path, uid, gid);
 831         if (ret < 0) {
 832                 TDM_WRN("changing owner of socket file failed:%s (%m)", socket_path);
 833                 return;
 834         }
 835 }
 836
 837 INTERN tdm_error
 838 tdm_server_init(tdm_private_loop *private_loop)
 839 {
 840         tdm_private_server *private_server;
 841
 842         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 843         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 844
 845         if (private_loop->private_server)
 846                 return TDM_ERROR_NONE;
 847
 848         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 849                 TDM_ERR("createing a tdm-socket failed");
 850                 return TDM_ERROR_OPERATION_FAILED;
 851         }
 852
 853         _tdm_socket_init(private_loop);
 854
 855         private_server = calloc(1, sizeof * private_server);
 856         if (!private_server) {
 857                 TDM_ERR("alloc failed");
 858                 return TDM_ERROR_OUT_OF_MEMORY;
 859         }
 860
 861         LIST_INITHEAD(&private_server->output_list);
 862         LIST_INITHEAD(&private_server->wait_list);
 863
 864         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 865                                                   private_server, _tdm_server_bind)) {
 866                 TDM_ERR("creating a global resource failed");
 867                 free(private_server);
 868                 return TDM_ERROR_OUT_OF_MEMORY;
 869         }
 870
 871         private_server->private_loop = private_loop;
 872         private_loop->private_server = private_server;
 873         keep_private_server = private_server;
 874
 875         LIST_INITHEAD(&client_list);
 876
 877         return TDM_ERROR_NONE;
 878 }
 879
 880 INTERN void
 881 tdm_server_deinit(tdm_private_loop *private_loop)
 882 {
 883         tdm_server_output_info *o = NULL, *oo = NULL;
 884         tdm_server_wait_info *w = NULL, *ww = NULL;
 885         tdm_server_client_info *c = NULL, *cc = NULL;
 886         tdm_private_server *private_server;
 887
 888         if (!private_loop->private_server)
 889                 return;
 890
 891         private_server = private_loop->private_server;
 892
 893         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 894                 destroy_wait(w);
 895         }
 896
 897         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 898                 wl_resource_destroy(o->resource);
 899         }
 900
 901         free(private_server);
 902         private_loop->private_server = NULL;
 903         keep_private_server = NULL;
 904
 905         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 906                 LIST_DEL(&c->link);
 907                 free(c);
 908         }
 909 }
 910
 911 INTERN const char*
 912 tdm_server_get_client_name(pid_t pid)
 913 {
 914         tdm_server_client_info *c = NULL;
 915
 916         LIST_FOR_EACH_ENTRY(c, &client_list, link) {
 917                 if (c->pid == pid)
 918                         return (const char*)c->name;
 919         }
 920
 921         return NULL;
 922 }