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