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         unsigned int stamp;
  76 } tdm_server_vblank_info;
  77
  78 typedef struct _tdm_server_wait_info {
  79         struct list_head link;
  80         tdm_server_vblank_info *vblank_info;
  81
  82         unsigned int req_id;
  83         double req_time;
  84 } tdm_server_wait_info;
  85
  86 typedef struct _tdm_server_client_info {
  87         struct list_head link;
  88         pid_t pid;
  89         char name[TDM_NAME_LEN];
  90         struct wl_resource *resource;
  91 } tdm_server_client_info;
  92
  93 static tdm_private_server *keep_private_server;
  94 static struct list_head client_list;
  95
  96 static void destroy_wait(tdm_server_wait_info *wait_info);
  97
  98 static void
  99 _tdm_server_get_process_name(pid_t pid, char *name, unsigned int size)
 100 {
 101         char proc[TDM_NAME_LEN], pname[TDM_NAME_LEN];
 102         FILE *h;
 103         size_t len;
 104
 105         snprintf(name, size, "Unknown");
 106
 107         snprintf(proc, TDM_NAME_LEN, "/proc/%d/cmdline", pid);
 108         h = fopen(proc, "r");
 109         if (!h)
 110                 return;
 111
 112         len = fread(pname, sizeof(char), TDM_NAME_LEN, h);
 113         if (len == 0) {
 114                 char *p = strncpy(pname, "NO NAME", sizeof(pname) - 1);
 115                 len = p - pname;
 116         }
 117         pname[len - 1] = '\0';
 118
 119         strncpy(name, pname, size - 1);
 120         name[size - 1] = '\0';
 121
 122         fclose(h);
 123 }
 124
 125 static tdm_output*
 126 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
 127 {
 128         tdm_private_loop *private_loop = private_server->private_loop;
 129         tdm_output *found = NULL;
 130
 131         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
 132                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
 133
 134         if (!found) {
 135                 int count = 0, i;
 136
 137                 tdm_display_get_output_count(private_loop->dpy, &count);
 138
 139                 for (i = 0; i < count; i++) {
 140                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 141                         tdm_output_conn_status status;
 142                         const char *model = NULL;
 143                         tdm_error ret;
 144
 145                         ret = tdm_output_get_conn_status(output, &status);
 146                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 147                                 continue;
 148
 149                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 150                         if (ret || !model)
 151                                 continue;
 152
 153                         if (strncmp(model, name, TDM_NAME_LEN))
 154                                 continue;
 155
 156                         found = output;
 157                         break;
 158                 }
 159         }
 160
 161         return found;
 162 }
 163
 164 /* LCOV_EXCL_START */
 165 static void
 166 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 167                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 168 {
 169         tdm_server_wait_info *found;
 170         tdm_server_vblank_info *vblank_info;
 171
 172         if (!keep_private_server)
 173                 return;
 174
 175         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 176                                    tdm_server_wait_info, link, found);
 177         if (!found) {
 178                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 179                 return;
 180         }
 181
 182         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 183                 TDM_DBG("req_id(%d) done", wait_info->req_id);
 184
 185         vblank_info = wait_info->vblank_info;
 186         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 187                                                         sequence, tv_sec, tv_usec, error);
 188
 189         destroy_wait(wait_info);
 190 }
 191 /* LCOV_EXCL_STOP */
 192
 193 /* LCOV_EXCL_START */
 194 static void
 195 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 196                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 197 {
 198         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 199 }
 200 /* LCOV_EXCL_STOP */
 201
 202 /* LCOV_EXCL_START */
 203 static void
 204 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 205                                                          tdm_value value, void *user_data)
 206 {
 207         tdm_server_output_info *output_info = user_data;
 208         struct wl_client *client;
 209         pid_t pid = 0;
 210
 211         TDM_RETURN_IF_FAIL(output_info != NULL);
 212
 213         client = wl_resource_get_client(output_info->resource);
 214         TDM_RETURN_IF_FAIL(client != NULL);
 215
 216         wl_client_get_credentials(client, &pid, NULL, NULL);
 217
 218         if (!output_info->watch_output_changes) {
 219                 TDM_DBG("skip sending the output changes: pid(%d)", (unsigned int)pid);
 220                 return;
 221         }
 222
 223         TDM_DBG("send the output changes: %d", (unsigned int)pid);
 224
 225         switch (type) {
 226         case TDM_OUTPUT_CHANGE_DPMS:
 227                 wl_tdm_output_send_dpms(output_info->resource, value.u32, TDM_ERROR_NONE);
 228                 break;
 229         case TDM_OUTPUT_CHANGE_CONNECTION:
 230                 wl_tdm_output_send_connection(output_info->resource, value.u32, TDM_ERROR_NONE);
 231                 break;
 232         default:
 233                 break;
 234         }
 235 }
 236 /* LCOV_EXCL_STOP */
 237
 238 static void
 239 destroy_wait(tdm_server_wait_info *wait_info)
 240 {
 241         LIST_DEL(&wait_info->link);
 242         free(wait_info);
 243 }
 244
 245 static void
 246 destroy_vblank_callback(struct wl_resource *resource)
 247 {
 248         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 249         tdm_server_wait_info *w = NULL, *ww = NULL;
 250
 251         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 252
 253         LIST_DEL(&vblank_info->link);
 254
 255         if (vblank_info->vblank)
 256                 tdm_vblank_destroy(vblank_info->vblank);
 257
 258         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 259                 if (w->vblank_info == vblank_info)
 260                         destroy_wait(w);
 261         }
 262
 263         free(vblank_info);
 264 }
 265
 266 /* LCOV_EXCL_START */
 267 static void
 268 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 269 {
 270         wl_resource_destroy(resource);
 271 }
 272 /* LCOV_EXCL_STOP */
 273
 274 /* LCOV_EXCL_START */
 275 static void
 276 _tdm_server_vblank_cb_set_name(struct wl_client *client, struct wl_resource *resource, const char *name)
 277 {
 278         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 279
 280         tdm_vblank_set_name(vblank_info->vblank, name);
 281 }
 282 /* LCOV_EXCL_STOP */
 283
 284 /* LCOV_EXCL_START */
 285 static void
 286 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 287 {
 288         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 289
 290         tdm_vblank_set_fps(vblank_info->vblank, fps);
 291 }
 292 /* LCOV_EXCL_STOP */
 293
 294 /* LCOV_EXCL_START */
 295 static void
 296 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 297 {
 298         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 299
 300         tdm_vblank_set_offset(vblank_info->vblank, offset);
 301 }
 302 /* LCOV_EXCL_STOP */
 303
 304 static void
 305 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 306 {
 307         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 308
 309         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 310 }
 311
 312 static void
 313 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 314                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 315 {
 316         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 317         tdm_server_output_info *output_info = vblank_info->output_info;
 318         tdm_private_server *private_server = output_info->private_server;
 319         tdm_server_wait_info *wait_info;
 320         unsigned int enable_fake = 0;
 321         tdm_error ret;
 322
 323         wait_info = calloc(1, sizeof * wait_info);
 324         if (!wait_info) {
 325                 /* LCOV_EXCL_START */
 326
 327                 TDM_ERR("alloc failed");
 328                 ret = TDM_ERROR_OUT_OF_MEMORY;
 329                 goto wait_failed;
 330
 331                 /* LCOV_EXCL_STOP */
 332         }
 333
 334         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 335         wait_info->vblank_info = vblank_info;
 336         wait_info->req_id = req_id;
 337         wait_info->req_time = TDM_TIME(req_sec, req_usec);
 338
 339         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 340                 TDM_DBG("req_id(%d) wait", req_id);
 341
 342         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 343
 344         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 345         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 346                 goto wait_failed;
 347
 348         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 349
 350         return;
 351 wait_failed:
 352         /* LCOV_EXCL_START */
 353
 354         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 355         if (wait_info)
 356                 destroy_wait(wait_info);
 357
 358         /* LCOV_EXCL_STOP */
 359 }
 360
 361 static void
 362 _tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
 363                                                                           uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 364 {
 365         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 366         tdm_server_output_info *output_info = vblank_info->output_info;
 367         tdm_private_server *private_server = output_info->private_server;
 368         tdm_server_wait_info *wait_info;
 369         unsigned int enable_fake = 0;
 370         tdm_error ret;
 371
 372         wait_info = calloc(1, sizeof * wait_info);
 373         if (!wait_info) {
 374                 /* LCOV_EXCL_START */
 375
 376                 TDM_ERR("alloc failed");
 377                 ret = TDM_ERROR_OUT_OF_MEMORY;
 378                 goto wait_failed;
 379
 380                 /* LCOV_EXCL_STOP */
 381         }
 382
 383         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 384         wait_info->vblank_info = vblank_info;
 385         wait_info->req_id = req_id;
 386         wait_info->req_time = TDM_TIME(req_sec, req_usec);
 387
 388         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 389                 TDM_DBG("req_id(%d) wait", req_id);
 390
 391         ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
 392
 393         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 394         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 395                 goto wait_failed;
 396
 397         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 398
 399         return;
 400 wait_failed:
 401         /* LCOV_EXCL_START */
 402
 403         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 404         if (wait_info)
 405                 destroy_wait(wait_info);
 406
 407         /* LCOV_EXCL_STOP */
 408 }
 409
 410 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 411         _tdm_server_vblank_cb_destroy,
 412         _tdm_server_vblank_cb_set_name,
 413         _tdm_server_vblank_cb_set_fps,
 414         _tdm_server_vblank_cb_set_offset,
 415         _tdm_server_vblank_cb_set_enable_fake,
 416         _tdm_server_vblank_cb_wait_vblank,
 417         _tdm_server_vblank_cb_wait_vblank_seq,
 418 };
 419
 420 /* LCOV_EXCL_START */
 421 static void
 422 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 423 {
 424         wl_resource_destroy(resource);
 425 }
 426 /* LCOV_EXCL_STOP */
 427
 428 static void
 429 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 430 {
 431         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 432         tdm_private_server *private_server = output_info->private_server;
 433         tdm_private_loop *private_loop = private_server->private_loop;
 434         struct wl_resource *vblank_resource;
 435         tdm_vblank *vblank;
 436         tdm_server_vblank_info *vblank_info;
 437
 438         vblank_resource =
 439                 wl_resource_create(client, &wl_tdm_vblank_interface,
 440                                                    wl_resource_get_version(resource), id);
 441         if (!vblank_resource) {
 442                 /* LCOV_EXCL_START */
 443
 444                 wl_resource_post_no_memory(resource);
 445                 TDM_ERR("wl_resource_create failed");
 446                 return;
 447
 448                 /* LCOV_EXCL_STOP */
 449         }
 450
 451         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 452         if (!vblank) {
 453                 /* LCOV_EXCL_START */
 454
 455                 wl_resource_post_no_memory(resource);
 456                 wl_resource_destroy(vblank_resource);
 457                 TDM_ERR("tdm_vblank_create failed");
 458                 return;
 459
 460                 /* LCOV_EXCL_STOP */
 461         }
 462
 463         vblank_info = calloc(1, sizeof * vblank_info);
 464         if (!vblank_info) {
 465                 /* LCOV_EXCL_START */
 466
 467                 wl_resource_post_no_memory(resource);
 468                 wl_resource_destroy(vblank_resource);
 469                 tdm_vblank_destroy(vblank);
 470                 TDM_ERR("alloc failed");
 471                 return;
 472
 473                 /* LCOV_EXCL_STOP */
 474         }
 475
 476         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 477         vblank_info->output_info = output_info;
 478         vblank_info->resource = vblank_resource;
 479         vblank_info->vblank = vblank;
 480         vblank_info->stamp = (unsigned int)tdm_vblank_get_stamp(vblank);
 481
 482         tdm_vblank_set_resource(vblank, vblank_resource);
 483
 484         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 485                                                                    vblank_info, destroy_vblank_callback);
 486
 487         wl_tdm_vblank_send_stamp(vblank_info->resource, vblank_info->stamp);
 488
 489         if (tdm_ttrace_module & TDM_TTRACE_CLIENT) {
 490                 tdm_output *output = tdm_display_get_output(private_loop->dpy, tdm_ttrace_output, NULL);
 491                 if (output == output_info->output)
 492                         wl_tdm_vblank_send_ttrace(vblank_info->resource, 1);
 493         }
 494
 495         return;
 496 }
 497
 498 /* LCOV_EXCL_START */
 499 static void
 500 _tdm_server_output_cb_watch_output_changes(struct wl_client *client, struct wl_resource *resource, unsigned int enable)
 501 {
 502         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 503
 504         TDM_RETURN_IF_FAIL(output_info != NULL);
 505
 506         output_info->watch_output_changes = enable;
 507 }
 508 /* LCOV_EXCL_STOP */
 509
 510 static void
 511 _tdm_server_output_cb_get_connection(struct wl_client *client, struct wl_resource *resource)
 512 {
 513         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 514         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 515         tdm_error ret;
 516
 517         TDM_RETURN_IF_FAIL(output_info != NULL);
 518
 519         ret = tdm_output_get_conn_status(output_info->output, &status);
 520         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 521
 522         wl_tdm_output_send_connection(output_info->resource, status, ret);
 523
 524         return;
 525
 526 failed:
 527         wl_tdm_output_send_connection(output_info->resource, TDM_OUTPUT_CONN_STATUS_DISCONNECTED, ret);
 528 }
 529
 530 static void
 531 _tdm_server_output_cb_get_mode(struct wl_client *client, struct wl_resource *resource)
 532 {
 533         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 534         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 535         tdm_error ret;
 536
 537         TDM_RETURN_IF_FAIL(output_info != NULL);
 538
 539         ret = tdm_output_get_conn_status(output_info->output, &status);
 540         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 541
 542         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 543                 const tdm_output_mode *mode = NULL;
 544                 unsigned int hdisplay, vdisplay, vrefresh;
 545
 546                 ret = tdm_output_get_mode(output_info->output, &mode);
 547                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 548
 549                 hdisplay = (mode) ? mode->hdisplay : 0;
 550                 vdisplay = (mode) ? mode->vdisplay : 0;
 551                 vrefresh = (mode) ? mode->vrefresh : 0;
 552
 553                 wl_tdm_output_send_mode(output_info->resource, hdisplay, vdisplay, vrefresh, ret);
 554         } else {
 555                 wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 556         }
 557
 558         return;
 559 failed:
 560         wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, ret);
 561 }
 562
 563 static void
 564 _tdm_server_output_cb_get_dpms(struct wl_client *client, struct wl_resource *resource)
 565 {
 566         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 567         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 568         tdm_error ret;
 569
 570         TDM_RETURN_IF_FAIL(output_info != NULL);
 571
 572         ret = tdm_output_get_conn_status(output_info->output, &status);
 573         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 574
 575         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 576                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 577
 578                 ret = tdm_output_get_dpms(output_info->output, &dpms_value);
 579                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 580
 581                 wl_tdm_output_send_dpms(output_info->resource, dpms_value, ret);
 582         } else {
 583                 wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 584         }
 585
 586         return;
 587 failed:
 588         wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, ret);
 589 }
 590
 591 static const struct wl_tdm_output_interface tdm_output_implementation = {
 592         _tdm_server_output_cb_destroy,
 593         _tdm_server_output_cb_create_vblank,
 594         _tdm_server_output_cb_watch_output_changes,
 595         _tdm_server_output_cb_get_connection,
 596         _tdm_server_output_cb_get_mode,
 597         _tdm_server_output_cb_get_dpms,
 598 };
 599
 600 static void
 601 destroy_output_callback(struct wl_resource *resource)
 602 {
 603         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 604         tdm_server_vblank_info *v = NULL, *vv = NULL;
 605
 606         TDM_RETURN_IF_FAIL(output_info != NULL);
 607
 608         LIST_DEL(&output_info->link);
 609
 610         tdm_output_remove_change_handler(output_info->output,
 611                                                                          _tdm_server_cb_output_change, output_info);
 612
 613         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 614                 wl_resource_destroy(v->resource);
 615         }
 616
 617         free(output_info);
 618 }
 619
 620 static void
 621 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 622                                                          const char *name, uint32_t id)
 623 {
 624         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 625         tdm_server_output_info *output_info;
 626         struct wl_resource *output_resource = NULL;
 627         tdm_output *output;
 628         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 629         tdm_error ret;
 630
 631         output = _tdm_server_find_output(private_server, name);
 632         if (!output) {
 633                 /* LCOV_EXCL_START */
 634
 635                 TDM_ERR("There is no '%s' output", name);
 636                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 637                                                            "There is no '%s' output", name);
 638                 return;
 639
 640                 /* LCOV_EXCL_STOP */
 641         }
 642
 643         output_resource =
 644                 wl_resource_create(client, &wl_tdm_output_interface,
 645                                                    wl_resource_get_version(resource), id);
 646         if (!output_resource) {
 647                 /* LCOV_EXCL_START */
 648
 649                 wl_resource_post_no_memory(resource);
 650                 TDM_ERR("wl_resource_create failed");
 651                 return;
 652
 653                 /* LCOV_EXCL_STOP */
 654         }
 655
 656         output_info = calloc(1, sizeof * output_info);
 657         if (!output_info) {
 658                 /* LCOV_EXCL_START */
 659
 660                 wl_resource_post_no_memory(resource);
 661                 wl_resource_destroy(output_resource);
 662                 TDM_ERR("alloc failed");
 663                 return;
 664
 665                 /* LCOV_EXCL_STOP */
 666         }
 667
 668         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 669         output_info->private_server = private_server;
 670         output_info->resource = output_resource;
 671         output_info->output = output;
 672         LIST_INITHEAD(&output_info->vblank_list);
 673
 674         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 675
 676         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 677                                                                    output_info, destroy_output_callback);
 678
 679         ret = tdm_output_get_conn_status(output, &status);
 680         wl_tdm_output_send_connection(output_resource, status, ret);
 681
 682         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 683                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 684                 const tdm_output_mode *mode = NULL;
 685                 unsigned int hdisplay, vdisplay, vrefresh;
 686
 687                 ret = tdm_output_get_mode(output, &mode);
 688                 hdisplay = (mode) ? mode->hdisplay : 0;
 689                 vdisplay = (mode) ? mode->vdisplay : 0;
 690                 vrefresh = (mode) ? mode->vrefresh : 0;
 691                 wl_tdm_output_send_mode(output_resource, hdisplay, vdisplay, vrefresh, ret);
 692
 693                 ret = tdm_output_get_dpms(output, &dpms_value);
 694                 wl_tdm_output_send_dpms(output_resource, dpms_value, ret);
 695         } else {
 696                 wl_tdm_output_send_mode(output_resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 697                 wl_tdm_output_send_dpms(output_resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 698         }
 699 }
 700
 701 /* LCOV_EXCL_START */
 702 static void
 703 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 704 {
 705         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 706         tdm_private_loop *private_loop = private_server->private_loop;
 707         char message[TDM_SERVER_REPLY_MSG_LEN];
 708         char *m;
 709         int len = sizeof(message), size;
 710         uid_t uid;
 711
 712         wl_client_get_credentials(client, NULL, &uid, NULL);
 713
 714         if (uid != 0) {
 715                 snprintf(message, len, "tdm-monitor: SHOULD be a superuser.\n");
 716                 TDM_ERR("%s", message);
 717         } else {
 718                 tdm_monitor_server_command(private_loop->dpy, options, message, &len);
 719         }
 720
 721         size = sizeof(message) - len;
 722         m = message;
 723
 724         wl_client_flush(client);
 725
 726         while (size > 0) {
 727                 char buffer[TDM_DEBUG_REPLY_MSG_LEN];
 728                 int copylen = TDM_MIN(size, sizeof(buffer) - 1);
 729
 730                 strncpy(buffer, m, copylen);
 731                 m += copylen;
 732                 size -= copylen;
 733
 734                 buffer[copylen] = '\0';
 735
 736                 wl_tdm_send_debug_message(resource, buffer);
 737         }
 738
 739         wl_tdm_send_debug_done(resource);
 740 }
 741 /* LCOV_EXCL_STOP */
 742
 743 static const struct wl_tdm_interface tdm_implementation = {
 744         _tdm_server_cb_debug,
 745         _tdm_server_cb_create_output,
 746 };
 747
 748 static void
 749 destroy_client(struct wl_resource *resource)
 750 {
 751         tdm_server_client_info *c = NULL, *cc = NULL;
 752         struct wl_client *client;
 753
 754         client = wl_resource_get_client(resource);
 755         TDM_RETURN_IF_FAIL(client != NULL);
 756
 757         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 758                 if (c->resource == resource) {
 759                         LIST_DEL(&c->link);
 760                         free(c);
 761                         return;
 762                 }
 763         }
 764 }
 765
 766 static void
 767 _tdm_server_bind(struct wl_client *client, void *data,
 768                                  uint32_t version, uint32_t id)
 769 {
 770         struct wl_resource *resource;
 771         tdm_server_client_info *cinfo;
 772
 773         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 774         if (!resource) {
 775                 /* LCOV_EXCL_START */
 776
 777                 wl_client_post_no_memory(client);
 778                 return;
 779
 780                 /* LCOV_EXCL_STOP */
 781         }
 782
 783         cinfo = calloc(1, sizeof(tdm_server_client_info));
 784         if (!cinfo) {
 785                 /* LCOV_EXCL_START */
 786
 787                 wl_client_post_no_memory(client);
 788                 wl_resource_destroy(resource);
 789                 return;
 790
 791                 /* LCOV_EXCL_STOP */
 792         }
 793
 794         cinfo->resource = resource;
 795
 796         LIST_ADDTAIL(&cinfo->link, &client_list);
 797         wl_client_get_credentials(client, &cinfo->pid, NULL, NULL);
 798         _tdm_server_get_process_name(cinfo->pid, cinfo->name, TDM_NAME_LEN);
 799
 800         wl_resource_set_implementation(resource, &tdm_implementation, data, destroy_client);
 801 }
 802
 803 static int
 804 _tdm_getgrnam_r(const char *name)
 805 {
 806         struct group *grp = NULL;
 807         struct group *grp_res = NULL;
 808         char* buf = NULL;
 809         size_t buf_len;
 810         int ret;
 811         int id;
 812
 813         buf_len = sysconf(_SC_GETGR_R_SIZE_MAX);
 814         if (buf_len == -1)
 815                 buf_len = 2048;
 816
 817         buf = calloc(1, buf_len * sizeof(char));
 818         if (!buf) {
 819                 TDM_ERR("creating buffer failed");
 820                 goto failed;
 821         }
 822
 823         grp = calloc(1, sizeof(struct group));
 824         if (!grp) {
 825                 TDM_ERR("creating group failed");
 826                 goto failed;
 827         }
 828
 829         ret = getgrnam_r(name, grp, buf, buf_len, &grp_res);
 830         if (ret < 0) {
 831                 TDM_ERR("getgrnam_r failed errno:%d(%m)", ret);
 832                 goto failed;
 833         }
 834
 835         if (grp_res == NULL) {
 836                 TDM_ERR("finding name:%s group failed", name);
 837                 goto failed;
 838         }
 839
 840         id = grp->gr_gid;
 841         free(buf);
 842         free(grp);
 843
 844         return id;
 845
 846 failed:
 847         /* LCOV_EXCL_START */
 848
 849         if (buf)
 850                 free(buf);
 851         if (grp)
 852                 free(grp);
 853
 854         return -1;
 855
 856         /* LCOV_EXCL_STOP */
 857 }
 858
 859 static void
 860 _tdm_socket_init(tdm_private_loop *private_loop)
 861 {
 862         const char *dir = NULL;
 863         char socket_path[TDM_NAME_LEN * 2];
 864         int ret = -1, len;
 865         uid_t uid;
 866         gid_t gid;
 867
 868         dir = getenv("XDG_RUNTIME_DIR");
 869         if (!dir) {
 870                 /* LCOV_EXCL_START */
 871
 872                 TDM_WRN("getting XDG_RUNTIME_DIR failed");
 873                 return;
 874
 875                 /* LCOV_EXCL_STOP */
 876         }
 877
 878         len = strlen(dir);
 879         if (len > TDM_NAME_LEN - 1) {
 880                 TDM_ERR("XDG_RUNTIME_DIR is too long\n");
 881                 return;
 882         }
 883
 884         strncpy(socket_path, dir, TDM_NAME_LEN - 1);
 885         socket_path[TDM_NAME_LEN - 1] = '\0';
 886
 887         strncat(socket_path, "/tdm-socket", 11);
 888         socket_path[TDM_NAME_LEN + 10] = '\0';
 889
 890         ret = chmod(socket_path, 509);
 891         if (ret < 0) {
 892                 /* LCOV_EXCL_START */
 893
 894                 TDM_WRN("changing modes of socket file failed:%s (%m)", socket_path);
 895                 return;
 896
 897                 /* LCOV_EXCL_STOP */
 898         }
 899
 900         ret = _tdm_getgrnam_r("root");
 901         if (ret < 0) {
 902                 /* LCOV_EXCL_START */
 903
 904                 TDM_WRN("getting uid failed");
 905                 return;
 906
 907                 /* LCOV_EXCL_STOP */
 908         }
 909         uid = ret;
 910
 911         ret = _tdm_getgrnam_r("display");
 912         if (ret < 0) {
 913                 /* LCOV_EXCL_START */
 914
 915                 TDM_WRN("getting gid failed");
 916                 return;
 917
 918                 /* LCOV_EXCL_STOP */
 919         }
 920         gid = ret;
 921
 922         ret = chown(socket_path, uid, gid);
 923         if (ret < 0) {
 924                 /* LCOV_EXCL_START */
 925
 926                 TDM_WRN("changing owner of socket file failed:%s (%m)", socket_path);
 927                 return;
 928
 929                 /* LCOV_EXCL_STOP */
 930         }
 931 }
 932
 933 INTERN tdm_error
 934 tdm_server_init(tdm_private_loop *private_loop)
 935 {
 936         tdm_private_server *private_server;
 937
 938         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 939         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 940
 941         if (private_loop->private_server)
 942                 return TDM_ERROR_NONE;
 943
 944         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 945                 /* LCOV_EXCL_START */
 946
 947                 TDM_ERR("createing a tdm-socket failed");
 948                 return TDM_ERROR_OPERATION_FAILED;
 949
 950                 /* LCOV_EXCL_STOP */
 951         }
 952
 953         _tdm_socket_init(private_loop);
 954
 955         private_server = calloc(1, sizeof * private_server);
 956         if (!private_server) {
 957                 TDM_ERR("alloc failed");
 958                 return TDM_ERROR_OUT_OF_MEMORY;
 959         }
 960
 961         LIST_INITHEAD(&private_server->output_list);
 962         LIST_INITHEAD(&private_server->wait_list);
 963
 964         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 965                                                   private_server, _tdm_server_bind)) {
 966                 /* LCOV_EXCL_START */
 967
 968                 TDM_ERR("creating a global resource failed");
 969                 free(private_server);
 970                 return TDM_ERROR_OUT_OF_MEMORY;
 971
 972                 /* LCOV_EXCL_STOP */
 973         }
 974
 975         private_server->private_loop = private_loop;
 976         private_loop->private_server = private_server;
 977         keep_private_server = private_server;
 978
 979         LIST_INITHEAD(&client_list);
 980
 981         return TDM_ERROR_NONE;
 982 }
 983
 984 INTERN void
 985 tdm_server_deinit(tdm_private_loop *private_loop)
 986 {
 987         tdm_server_output_info *o = NULL, *oo = NULL;
 988         tdm_server_wait_info *w = NULL, *ww = NULL;
 989         tdm_server_client_info *c = NULL, *cc = NULL;
 990         tdm_private_server *private_server;
 991
 992         if (!private_loop->private_server)
 993                 return;
 994
 995         private_server = private_loop->private_server;
 996
 997         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 998                 destroy_wait(w);
 999         }
1000
1001         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
1002                 wl_resource_destroy(o->resource);
1003         }
1004
1005         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
1006                 wl_resource_destroy(c->resource);
1007         }
1008
1009         free(private_server);
1010         private_loop->private_server = NULL;
1011         keep_private_server = NULL;
1012 }
1013
1014 /* LCOV_EXCL_START */
1015 INTERN const char*
1016 tdm_server_get_client_name(pid_t pid)
1017 {
1018         tdm_server_client_info *c = NULL;
1019
1020         LIST_FOR_EACH_ENTRY(c, &client_list, link) {
1021                 if (c->pid == pid)
1022                         return (const char*)c->name;
1023         }
1024
1025         return NULL;
1026 }
1027 /* LCOV_EXCL_STOP */
1028
1029 /* LCOV_EXCL_START */
1030 INTERN tdm_error
1031 tdm_server_enable_ttrace_client_vblank(tdm_display *dpy, tdm_output *output, int enable)
1032 {
1033         tdm_private_server *private_server = keep_private_server;
1034         tdm_server_output_info *output_info = NULL;
1035
1036         if (!keep_private_server)
1037                 return TDM_ERROR_NONE;
1038
1039         LIST_FOR_EACH_ENTRY(output_info, &private_server->output_list, link) {
1040                 tdm_server_vblank_info *vblank_info = NULL;
1041
1042                 if (output && output_info->output != output)
1043                         continue;
1044
1045                 LIST_FOR_EACH_ENTRY(vblank_info, &output_info->vblank_list, link) {
1046                         wl_tdm_vblank_send_ttrace(vblank_info->resource, enable);
1047                 }
1048         }
1049
1050         return TDM_ERROR_NONE;
1051 }
1052 /* LCOV_EXCL_STOP */