src/main.cpp

   1 /*
   2  * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <unistd.h>
  18 #include <algorithm>
  19 #include <mutex>
  20 #include <json.h>
  21 #include <json.hpp>
  22 #include "app.hpp"
  23 #include "result.hpp"
  24 #include "json_helper.hpp"
  25 #include "util.hpp"
  26 #include "wayland_ivi_wm.hpp"
  27
  28 extern "C"
  29 {
  30 #include <afb/afb-binding.h>
  31 #include <systemd/sd-event.h>
  32 }
  33
  34 typedef struct wmClientCtxt
  35 {
  36     std::string name;
  37     wmClientCtxt(const char *appName)
  38     {
  39         name = appName;
  40     }
  41 } wmClientCtxt;
  42
  43 struct afb_instance
  44 {
  45     std::unique_ptr<wl::display> display;
  46     wm::App app;
  47
  48     afb_instance() : display{new wl::display}, app{this->display.get()} {}
  49
  50     int init();
  51 };
  52
  53 struct afb_instance *g_afb_instance;
  54 std::mutex binding_m;
  55
  56 int afb_instance::init()
  57 {
  58     return this->app.init();
  59 }
  60
  61 int display_event_callback(sd_event_source *evs, int /*fd*/, uint32_t events,
  62                            void * /*data*/)
  63 {
  64     ST();
  65
  66     if ((events & EPOLLHUP) != 0)
  67     {
  68         HMI_ERROR("wm", "The compositor hung up, dying now.");
  69         delete g_afb_instance;
  70         g_afb_instance = nullptr;
  71         goto error;
  72     }
  73
  74     if ((events & EPOLLIN) != 0u)
  75     {
  76         {
  77             STN(display_read_events);
  78             g_afb_instance->app.display->read_events();
  79             g_afb_instance->app.set_pending_events();
  80         }
  81         {
  82             // We want do dispatch pending wayland events from within
  83             // the API context
  84             STN(winman_ping_api_call);
  85             afb_service_call("windowmanager", "ping", json_object_new_object(),
  86                             [](void *c, int st, json_object *j) {
  87                                 STN(winman_ping_api_call_return);
  88                             },
  89                             nullptr);
  90         }
  91     }
  92
  93     return 0;
  94
  95 error:
  96     sd_event_source_unref(evs);
  97     if (getenv("WINMAN_EXIT_ON_HANGUP") != nullptr)
  98     {
  99         exit(1);
 100     }
 101     return -1;
 102 }
 103
 104 int _binding_init()
 105 {
 106     HMI_NOTICE("wm", "WinMan ver. %s", WINMAN_VERSION_STRING);
 107
 108     if (g_afb_instance != nullptr)
 109     {
 110         HMI_ERROR("wm", "Wayland context already initialized?");
 111         return 0;
 112     }
 113
 114     if (getenv("XDG_RUNTIME_DIR") == nullptr)
 115     {
 116         HMI_ERROR("wm", "Environment variable XDG_RUNTIME_DIR not set");
 117         goto error;
 118     }
 119
 120     {
 121         // wait until wayland compositor starts up.
 122         int cnt = 0;
 123         g_afb_instance = new afb_instance;
 124         while (!g_afb_instance->display->ok())
 125         {
 126             cnt++;
 127             if (20 <= cnt)
 128             {
 129                 HMI_ERROR("wm", "Could not connect to compositor");
 130                 goto error;
 131             }
 132             HMI_ERROR("wm", "Wait to start weston ...");
 133             sleep(1);
 134             delete g_afb_instance;
 135             g_afb_instance = new afb_instance;
 136         }
 137     }
 138
 139     if (g_afb_instance->init() == -1)
 140     {
 141         HMI_ERROR("wm", "Could not connect to compositor");
 142         goto error;
 143     }
 144
 145     {
 146         int ret = sd_event_add_io(afb_daemon_get_event_loop(), nullptr,
 147                                   g_afb_instance->display->get_fd(), EPOLLIN,
 148                                   display_event_callback, g_afb_instance);
 149         if (ret < 0)
 150         {
 151             HMI_ERROR("wm", "Could not initialize afb_instance event handler: %d", -ret);
 152             goto error;
 153         }
 154     }
 155
 156     atexit([] { delete g_afb_instance; });
 157
 158     return 0;
 159
 160 error:
 161     delete g_afb_instance;
 162     g_afb_instance = nullptr;
 163     return -1;
 164 }
 165
 166 int binding_init() noexcept
 167 {
 168     try
 169     {
 170         return _binding_init();
 171     }
 172     catch (std::exception &e)
 173     {
 174         HMI_ERROR("wm", "Uncaught exception in binding_init(): %s", e.what());
 175     }
 176     return -1;
 177 }
 178
 179 static bool checkFirstReq(afb_req req)
 180 {
 181     wmClientCtxt *ctxt = (wmClientCtxt *)afb_req_context_get(req);
 182     return (ctxt) ? false : true;
 183 }
 184
 185 static void cbRemoveClientCtxt(void *data)
 186 {
 187     wmClientCtxt *ctxt = (wmClientCtxt *)data;
 188     if (ctxt == nullptr)
 189     {
 190         return;
 191     }
 192     HMI_DEBUG("wm", "remove app %s", ctxt->name.c_str());
 193     // Lookup surfaceID and remove it because App is dead.
 194     auto pSid = g_afb_instance->app.id_alloc.lookup(ctxt->name.c_str());
 195     if (pSid)
 196     {
 197         auto sid = *pSid;
 198         g_afb_instance->app.id_alloc.remove_id(sid);
 199         g_afb_instance->app.layers.remove_surface(sid);
 200         g_afb_instance->app.controller->sprops.erase(sid);
 201         g_afb_instance->app.controller->surfaces.erase(sid);
 202         HMI_DEBUG("wm", "delete surfaceID %d", sid);
 203     }
 204     delete ctxt;
 205 }
 206
 207 void windowmanager_requestsurface(afb_req req) noexcept
 208 {
 209     std::lock_guard<std::mutex> guard(binding_m);
 210 #ifdef ST
 211     ST();
 212 #endif
 213     if (g_afb_instance == nullptr)
 214     {
 215         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 216         return;
 217     }
 218
 219     try
 220     {
 221         const char *a_drawing_name = afb_req_value(req, "drawing_name");
 222         if (!a_drawing_name)
 223         {
 224             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 225             return;
 226         }
 227
 228         /* Create Security Context */
 229         bool isFirstReq = checkFirstReq(req);
 230         if (!isFirstReq)
 231         {
 232             wmClientCtxt *ctxt = (wmClientCtxt *)afb_req_context_get(req);
 233             HMI_DEBUG("wm", "You're %s.", ctxt->name.c_str());
 234             if (ctxt->name != std::string(a_drawing_name))
 235             {
 236                 afb_req_fail_f(req, "failed", "Don't request with other name: %s for now", a_drawing_name);
 237                 HMI_DEBUG("wm", "Don't request with other name: %s for now", a_drawing_name);
 238                 return;
 239             }
 240         }
 241
 242         auto ret = g_afb_instance->app.api_request_surface(a_drawing_name);
 243
 244         if (isFirstReq)
 245         {
 246             wmClientCtxt *ctxt = new wmClientCtxt(a_drawing_name);
 247             HMI_DEBUG("wm", "create session for %s", ctxt->name.c_str());
 248             afb_req_session_set_LOA(req, 1);
 249             afb_req_context_set(req, ctxt, cbRemoveClientCtxt);
 250         }
 251         else
 252         {
 253             HMI_DEBUG("wm", "session already created for %s", a_drawing_name);
 254         }
 255
 256         if (ret.is_err())
 257         {
 258             afb_req_fail(req, "failed", ret.unwrap_err());
 259             return;
 260         }
 261
 262         afb_req_success(req, json_object_new_int(ret.unwrap()), "success");
 263     }
 264     catch (std::exception &e)
 265     {
 266         afb_req_fail_f(req, "failed", "Uncaught exception while calling requestsurface: %s", e.what());
 267         return;
 268     }
 269 }
 270
 271 void windowmanager_requestsurfacexdg(afb_req req) noexcept
 272 {
 273     std::lock_guard<std::mutex> guard(binding_m);
 274 #ifdef ST
 275     ST();
 276 #endif
 277     if (g_afb_instance == nullptr)
 278     {
 279         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 280         return;
 281     }
 282
 283     try
 284     {
 285         json_object *jreq = afb_req_json(req);
 286
 287         json_object *j_drawing_name = nullptr;
 288         if (!json_object_object_get_ex(jreq, "drawing_name", &j_drawing_name))
 289         {
 290             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 291             return;
 292         }
 293         char const *a_drawing_name = json_object_get_string(j_drawing_name);
 294
 295         json_object *j_ivi_id = nullptr;
 296         if (!json_object_object_get_ex(jreq, "ivi_id", &j_ivi_id))
 297         {
 298             afb_req_fail(req, "failed", "Need char const* argument ivi_id");
 299             return;
 300         }
 301         char const *a_ivi_id = json_object_get_string(j_ivi_id);
 302
 303         auto ret = g_afb_instance->app.api_request_surface(a_drawing_name, a_ivi_id);
 304         if (ret != nullptr)
 305         {
 306             afb_req_fail(req, "failed", ret);
 307             return;
 308         }
 309
 310         afb_req_success(req, NULL, "success");
 311     }
 312     catch (std::exception &e)
 313     {
 314         afb_req_fail_f(req, "failed", "Uncaught exception while calling requestsurfacexdg: %s", e.what());
 315         return;
 316     }
 317 }
 318
 319 void windowmanager_activatesurface(afb_req req) noexcept
 320 {
 321     std::lock_guard<std::mutex> guard(binding_m);
 322 #ifdef ST
 323     ST();
 324 #endif
 325     if (g_afb_instance == nullptr)
 326     {
 327         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 328         return;
 329     }
 330
 331     try
 332     {
 333         const char *a_drawing_name = afb_req_value(req, "drawing_name");
 334         if (!a_drawing_name)
 335         {
 336             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 337             return;
 338         }
 339
 340         const char *a_drawing_area = afb_req_value(req, "drawing_area");
 341         if (!a_drawing_area)
 342         {
 343             afb_req_fail(req, "failed", "Need char const* argument drawing_area");
 344             return;
 345         }
 346
 347         g_afb_instance->app.api_activate_surface(a_drawing_name, a_drawing_area,
 348                     [&req](const char *errmsg) {
 349                         if (errmsg != nullptr)
 350                         {
 351                             HMI_ERROR("wm", errmsg);
 352                             afb_req_fail(req, "failed", errmsg);
 353                             return;
 354                         }
 355                         afb_req_success(req, NULL, "success");
 356                     });
 357     }
 358     catch (std::exception &e)
 359     {
 360         HMI_WARNING("wm", "failed", "Uncaught exception while calling activatesurface: %s", e.what());
 361         return;
 362     }
 363 }
 364
 365 void windowmanager_deactivatesurface(afb_req req) noexcept
 366 {
 367     std::lock_guard<std::mutex> guard(binding_m);
 368 #ifdef ST
 369     ST();
 370 #endif
 371     if (g_afb_instance == nullptr)
 372     {
 373         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 374         return;
 375     }
 376
 377     try
 378     {
 379         const char *a_drawing_name = afb_req_value(req, "drawing_name");
 380         if (!a_drawing_name)
 381         {
 382             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 383             return;
 384         }
 385
 386         g_afb_instance->app.api_deactivate_surface(a_drawing_name,
 387                     [&req](const char *errmsg) {
 388                         if (errmsg != nullptr)
 389                         {
 390                             HMI_ERROR("wm", errmsg);
 391                             afb_req_fail(req, "failed", errmsg);
 392                             return;
 393                         }
 394                         afb_req_success(req, NULL, "success");
 395                     });
 396     }
 397     catch (std::exception &e)
 398     {
 399         HMI_WARNING("wm", "Uncaught exception while calling deactivatesurface: %s", e.what());
 400         return;
 401     }
 402 }
 403
 404 void windowmanager_enddraw(afb_req req) noexcept
 405 {
 406     std::lock_guard<std::mutex> guard(binding_m);
 407 #ifdef ST
 408     ST();
 409 #endif
 410     if (g_afb_instance == nullptr)
 411     {
 412         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 413         return;
 414     }
 415
 416     try
 417     {
 418         const char *a_drawing_name = afb_req_value(req, "drawing_name");
 419         if (!a_drawing_name)
 420         {
 421             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 422             return;
 423         }
 424         afb_req_success(req, NULL, "success");
 425
 426         g_afb_instance->app.api_enddraw(a_drawing_name);
 427     }
 428     catch (std::exception &e)
 429     {
 430         HMI_WARNING("wm", "failed", "Uncaught exception while calling enddraw: %s", e.what());
 431         return;
 432     }
 433 }
 434
 435 void windowmanager_getdisplayinfo_thunk(afb_req req) noexcept
 436 {
 437     std::lock_guard<std::mutex> guard(binding_m);
 438 #ifdef ST
 439     ST();
 440 #endif
 441     if (g_afb_instance == nullptr)
 442     {
 443         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 444         return;
 445     }
 446
 447     try
 448     {
 449         auto ret = g_afb_instance->app.api_get_display_info();
 450         if (ret.is_err())
 451         {
 452             afb_req_fail(req, "failed", ret.unwrap_err());
 453             return;
 454         }
 455
 456         afb_req_success(req, ret.unwrap(), "success");
 457     }
 458     catch (std::exception &e)
 459     {
 460         afb_req_fail_f(req, "failed", "Uncaught exception while calling getdisplayinfo: %s", e.what());
 461         return;
 462     }
 463 }
 464
 465 void windowmanager_getareainfo_thunk(afb_req req) noexcept
 466 {
 467     std::lock_guard<std::mutex> guard(binding_m);
 468 #ifdef ST
 469     ST();
 470 #endif
 471     if (g_afb_instance == nullptr)
 472     {
 473         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 474         return;
 475     }
 476
 477     try
 478     {
 479         json_object *jreq = afb_req_json(req);
 480
 481         json_object *j_drawing_name = nullptr;
 482         if (!json_object_object_get_ex(jreq, "drawing_name", &j_drawing_name))
 483         {
 484             afb_req_fail(req, "failed", "Need char const* argument drawing_name");
 485             return;
 486         }
 487         char const *a_drawing_name = json_object_get_string(j_drawing_name);
 488
 489         auto ret = g_afb_instance->app.api_get_area_info(a_drawing_name);
 490         if (ret.is_err())
 491         {
 492             afb_req_fail(req, "failed", ret.unwrap_err());
 493             return;
 494         }
 495
 496         afb_req_success(req, ret.unwrap(), "success");
 497     }
 498     catch (std::exception &e)
 499     {
 500         afb_req_fail_f(req, "failed", "Uncaught exception while calling getareainfo: %s", e.what());
 501         return;
 502     }
 503 }
 504
 505 void windowmanager_wm_subscribe(afb_req req) noexcept
 506 {
 507     std::lock_guard<std::mutex> guard(binding_m);
 508 #ifdef ST
 509     ST();
 510 #endif
 511     if (g_afb_instance == nullptr)
 512     {
 513         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 514         return;
 515     }
 516
 517     try
 518     {
 519         json_object *jreq = afb_req_json(req);
 520         json_object *j = nullptr;
 521         if (!json_object_object_get_ex(jreq, "event", &j))
 522         {
 523             afb_req_fail(req, "failed", "Need char const* argument event");
 524             return;
 525         }
 526         int event_type = json_object_get_int(j);
 527         const char *event_name = g_afb_instance->app.kListEventName[event_type];
 528         struct afb_event event = g_afb_instance->app.map_afb_event[event_name];
 529         int ret = afb_req_subscribe(req, event);
 530         if (ret)
 531         {
 532             afb_req_fail(req, "failed", "Error: afb_req_subscribe()");
 533             return;
 534         }
 535         afb_req_success(req, NULL, "success");
 536     }
 537     catch (std::exception &e)
 538     {
 539         afb_req_fail_f(req, "failed", "Uncaught exception while calling wm_subscribe: %s", e.what());
 540         return;
 541     }
 542 }
 543
 544 void windowmanager_list_drawing_names(afb_req req) noexcept
 545 {
 546     std::lock_guard<std::mutex> guard(binding_m);
 547 #ifdef ST
 548     ST();
 549 #endif
 550     if (g_afb_instance == nullptr)
 551     {
 552         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 553         return;
 554     }
 555
 556     try
 557     {
 558
 559         nlohmann::json j = g_afb_instance->app.id_alloc.name2id;
 560         auto ret = wm::Ok(json_tokener_parse(j.dump().c_str()));
 561         if (ret.is_err())
 562         {
 563             afb_req_fail(req, "failed", ret.unwrap_err());
 564             return;
 565         }
 566
 567         afb_req_success(req, ret.unwrap(), "success");
 568     }
 569     catch (std::exception &e)
 570     {
 571         afb_req_fail_f(req, "failed", "Uncaught exception while calling list_drawing_names: %s", e.what());
 572         return;
 573     }
 574 }
 575
 576 void windowmanager_ping(afb_req req) noexcept
 577 {
 578     std::lock_guard<std::mutex> guard(binding_m);
 579 #ifdef ST
 580     ST();
 581 #endif
 582     if (g_afb_instance == nullptr)
 583     {
 584         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 585         return;
 586     }
 587
 588     try
 589     {
 590
 591         g_afb_instance->app.api_ping();
 592
 593         afb_req_success(req, NULL, "success");
 594     }
 595     catch (std::exception &e)
 596     {
 597         afb_req_fail_f(req, "failed", "Uncaught exception while calling ping: %s", e.what());
 598         return;
 599     }
 600 }
 601
 602 void windowmanager_debug_status(afb_req req) noexcept
 603 {
 604     std::lock_guard<std::mutex> guard(binding_m);
 605 #ifdef ST
 606     ST();
 607 #endif
 608     if (g_afb_instance == nullptr)
 609     {
 610         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 611         return;
 612     }
 613
 614     try
 615     {
 616
 617         json_object *jr = json_object_new_object();
 618         json_object_object_add(jr, "surfaces",
 619                                to_json(g_afb_instance->app.controller->sprops));
 620         json_object_object_add(jr, "layers", to_json(g_afb_instance->app.controller->lprops));
 621
 622         afb_req_success(req, jr, "success");
 623     }
 624     catch (std::exception &e)
 625     {
 626         afb_req_fail_f(req, "failed", "Uncaught exception while calling debug_status: %s", e.what());
 627         return;
 628     }
 629 }
 630
 631 void windowmanager_debug_layers(afb_req req) noexcept
 632 {
 633     std::lock_guard<std::mutex> guard(binding_m);
 634 #ifdef ST
 635     ST();
 636 #endif
 637     if (g_afb_instance == nullptr)
 638     {
 639         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 640         return;
 641     }
 642
 643     try
 644     {
 645         auto ret = wm::Ok(json_tokener_parse(g_afb_instance->app.layers.to_json().dump().c_str()));
 646
 647         afb_req_success(req, ret, "success");
 648     }
 649     catch (std::exception &e)
 650     {
 651         afb_req_fail_f(req, "failed", "Uncaught exception while calling debug_layers: %s", e.what());
 652         return;
 653     }
 654 }
 655
 656 void windowmanager_debug_surfaces(afb_req req) noexcept
 657 {
 658     std::lock_guard<std::mutex> guard(binding_m);
 659 #ifdef ST
 660     ST();
 661 #endif
 662     if (g_afb_instance == nullptr)
 663     {
 664         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 665         return;
 666     }
 667
 668     try
 669     {
 670
 671         auto ret = wm::Ok(to_json(g_afb_instance->app.controller->sprops));
 672         if (ret.is_err())
 673         {
 674             afb_req_fail(req, "failed", ret.unwrap_err());
 675             return;
 676         }
 677
 678         afb_req_success(req, ret.unwrap(), "success");
 679     }
 680     catch (std::exception &e)
 681     {
 682         afb_req_fail_f(req, "failed", "Uncaught exception while calling debug_surfaces: %s", e.what());
 683         return;
 684     }
 685 }
 686
 687 void windowmanager_debug_terminate(afb_req req) noexcept
 688 {
 689     std::lock_guard<std::mutex> guard(binding_m);
 690 #ifdef ST
 691     ST();
 692 #endif
 693     if (g_afb_instance == nullptr)
 694     {
 695         afb_req_fail(req, "failed", "Binding not initialized, did the compositor die?");
 696         return;
 697     }
 698
 699     try
 700     {
 701
 702         if (getenv("WINMAN_DEBUG_TERMINATE") != nullptr)
 703         {
 704             raise(SIGKILL); // afb-daemon kills it's pgroup using TERM, which
 705                             // doesn't play well with perf
 706         }
 707
 708         afb_req_success(req, NULL, "success");
 709     }
 710     catch (std::exception &e)
 711     {
 712         afb_req_fail_f(req, "failed", "Uncaught exception while calling debug_terminate: %s", e.what());
 713         return;
 714     }
 715 }
 716
 717 const struct afb_verb_v2 windowmanager_verbs[] = {
 718     {"requestsurface", windowmanager_requestsurface, nullptr, nullptr, AFB_SESSION_NONE},
 719     {"requestsurfacexdg", windowmanager_requestsurfacexdg, nullptr, nullptr, AFB_SESSION_NONE},
 720     {"activatesurface", windowmanager_activatesurface, nullptr, nullptr, AFB_SESSION_NONE},
 721     {"deactivatesurface", windowmanager_deactivatesurface, nullptr, nullptr, AFB_SESSION_NONE},
 722     {"enddraw", windowmanager_enddraw, nullptr, nullptr, AFB_SESSION_NONE},
 723     {"getdisplayinfo", windowmanager_getdisplayinfo_thunk, nullptr, nullptr, AFB_SESSION_NONE},
 724     {"getareainfo", windowmanager_getareainfo_thunk, nullptr, nullptr, AFB_SESSION_NONE},
 725     {"wm_subscribe", windowmanager_wm_subscribe, nullptr, nullptr, AFB_SESSION_NONE},
 726     {"list_drawing_names", windowmanager_list_drawing_names, nullptr, nullptr, AFB_SESSION_NONE},
 727     {"ping", windowmanager_ping, nullptr, nullptr, AFB_SESSION_NONE},
 728     {"debug_status", windowmanager_debug_status, nullptr, nullptr, AFB_SESSION_NONE},
 729     {"debug_layers", windowmanager_debug_layers, nullptr, nullptr, AFB_SESSION_NONE},
 730     {"debug_surfaces", windowmanager_debug_surfaces, nullptr, nullptr, AFB_SESSION_NONE},
 731     {"debug_terminate", windowmanager_debug_terminate, nullptr, nullptr, AFB_SESSION_NONE},
 732     {}};
 733
 734 extern "C" const struct afb_binding_v2 afbBindingV2 = {
 735     "windowmanager", nullptr, nullptr, windowmanager_verbs, nullptr, binding_init, nullptr, 0};