src/porting.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 /*
  21         Random portability stuff
  22
  23         See comments in porting.h
  24 */
  25
  26 #include "porting.h"
  27
  28 #if defined(__FreeBSD__)
  29         #include <sys/types.h>
  30         #include <sys/sysctl.h>
  31 #elif defined(_WIN32)
  32         #include <algorithm>
  33 #endif
  34 #if !defined(_WIN32)
  35         #include <unistd.h>
  36         #include <sys/utsname.h>
  37 #endif
  38 #if defined(__hpux)
  39         #define _PSTAT64
  40         #include <sys/pstat.h>
  41 #endif
  42 #if !defined(_WIN32) && !defined(__APPLE__) && \
  43         !defined(__ANDROID__) && !defined(SERVER)
  44         #define XORG_USED
  45 #endif
  46 #ifdef XORG_USED
  47         #include <X11/Xlib.h>
  48         #include <X11/Xutil.h>
  49 #endif
  50
  51 #include "config.h"
  52 #include "debug.h"
  53 #include "filesys.h"
  54 #include "log.h"
  55 #include "util/string.h"
  56 #include "settings.h"
  57 #include <list>
  58
  59 namespace porting
  60 {
  61
  62 /*
  63         Signal handler (grabs Ctrl-C on POSIX systems)
  64 */
  65
  66 bool g_killed = false;
  67
  68 bool * signal_handler_killstatus(void)
  69 {
  70         return &g_killed;
  71 }
  72
  73 #if !defined(_WIN32) // POSIX
  74         #include <signal.h>
  75
  76 void sigint_handler(int sig)
  77 {
  78         if(!g_killed) {
  79                 dstream<<DTIME<<"INFO: sigint_handler(): "
  80                                 <<"Ctrl-C pressed, shutting down."<<std::endl;
  81
  82                 // Comment out for less clutter when testing scripts
  83                 /*dstream<<DTIME<<"INFO: sigint_handler(): "
  84                                 <<"Printing debug stacks"<<std::endl;
  85                 debug_stacks_print();*/
  86
  87                 g_killed = true;
  88         } else {
  89                 (void)signal(SIGINT, SIG_DFL);
  90         }
  91 }
  92
  93 void signal_handler_init(void)
  94 {
  95         (void)signal(SIGINT, sigint_handler);
  96 }
  97
  98 #else // _WIN32
  99         #include <signal.h>
 100
 101 BOOL WINAPI event_handler(DWORD sig)
 102 {
 103         switch (sig) {
 104         case CTRL_C_EVENT:
 105         case CTRL_CLOSE_EVENT:
 106         case CTRL_LOGOFF_EVENT:
 107         case CTRL_SHUTDOWN_EVENT:
 108                 if (g_killed == false) {
 109                         dstream << DTIME << "INFO: event_handler(): "
 110                                 << "Ctrl+C, Close Event, Logoff Event or Shutdown Event,"
 111                                 " shutting down." << std::endl;
 112                         g_killed = true;
 113                 } else {
 114                         (void)signal(SIGINT, SIG_DFL);
 115                 }
 116                 break;
 117         case CTRL_BREAK_EVENT:
 118                 break;
 119         }
 120
 121         return TRUE;
 122 }
 123
 124 void signal_handler_init(void)
 125 {
 126         SetConsoleCtrlHandler((PHANDLER_ROUTINE)event_handler, TRUE);
 127 }
 128
 129 #endif
 130
 131
 132 /*
 133         Path mangler
 134 */
 135
 136 // Default to RUN_IN_PLACE style relative paths
 137 std::string path_share = "..";
 138 std::string path_user = "..";
 139 std::string path_locale = path_share + DIR_DELIM + "locale";
 140
 141
 142 std::string getDataPath(const char *subpath)
 143 {
 144         return path_share + DIR_DELIM + subpath;
 145 }
 146
 147 void pathRemoveFile(char *path, char delim)
 148 {
 149         // Remove filename and path delimiter
 150         int i;
 151         for(i = strlen(path)-1; i>=0; i--)
 152         {
 153                 if(path[i] == delim)
 154                         break;
 155         }
 156         path[i] = 0;
 157 }
 158
 159 bool detectMSVCBuildDir(const std::string &path)
 160 {
 161         const char *ends[] = {
 162                 "bin\\Release",
 163                 "bin\\Debug",
 164                 "bin\\Build",
 165                 NULL
 166         };
 167         return (removeStringEnd(path, ends) != "");
 168 }
 169
 170 std::string get_sysinfo()
 171 {
 172 #ifdef _WIN32
 173         OSVERSIONINFO osvi;
 174         std::ostringstream oss;
 175         std::string tmp;
 176         ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
 177         osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 178         GetVersionEx(&osvi);
 179         tmp = osvi.szCSDVersion;
 180         std::replace(tmp.begin(), tmp.end(), ' ', '_');
 181
 182         oss << "Windows/" << osvi.dwMajorVersion << "."
 183                 << osvi.dwMinorVersion;
 184         if (osvi.szCSDVersion[0])
 185                 oss << "-" << tmp;
 186         oss << " ";
 187         #ifdef _WIN64
 188         oss << "x86_64";
 189         #else
 190         BOOL is64 = FALSE;
 191         if (IsWow64Process(GetCurrentProcess(), &is64) && is64)
 192                 oss << "x86_64"; // 32-bit app on 64-bit OS
 193         else
 194                 oss << "x86";
 195         #endif
 196
 197         return oss.str();
 198 #else
 199         struct utsname osinfo;
 200         uname(&osinfo);
 201         return std::string(osinfo.sysname) + "/"
 202                 + osinfo.release + " " + osinfo.machine;
 203 #endif
 204 }
 205
 206
 207 bool getCurrentWorkingDir(char *buf, size_t len)
 208 {
 209 #ifdef _WIN32
 210         DWORD ret = GetCurrentDirectory(len, buf);
 211         return (ret != 0) && (ret <= len);
 212 #else
 213         return getcwd(buf, len);
 214 #endif
 215 }
 216
 217
 218 bool getExecPathFromProcfs(char *buf, size_t buflen)
 219 {
 220 #ifndef _WIN32
 221         buflen--;
 222
 223         ssize_t len;
 224         if ((len = readlink("/proc/self/exe",     buf, buflen)) == -1 &&
 225                 (len = readlink("/proc/curproc/file", buf, buflen)) == -1 &&
 226                 (len = readlink("/proc/curproc/exe",  buf, buflen)) == -1)
 227                 return false;
 228
 229         buf[len] = '\0';
 230         return true;
 231 #else
 232         return false;
 233 #endif
 234 }
 235
 236 //// Windows
 237 #if defined(_WIN32)
 238
 239 bool getCurrentExecPath(char *buf, size_t len)
 240 {
 241         DWORD written = GetModuleFileNameA(NULL, buf, len);
 242         if (written == 0 || written == len)
 243                 return false;
 244
 245         return true;
 246 }
 247
 248
 249 //// Linux
 250 #elif defined(linux) || defined(__linux) || defined(__linux__)
 251
 252 bool getCurrentExecPath(char *buf, size_t len)
 253 {
 254         if (!getExecPathFromProcfs(buf, len))
 255                 return false;
 256
 257         return true;
 258 }
 259
 260
 261 //// Mac OS X, Darwin
 262 #elif defined(__APPLE__)
 263
 264 bool getCurrentExecPath(char *buf, size_t len)
 265 {
 266         uint32_t lenb = (uint32_t)len;
 267         if (_NSGetExecutablePath(buf, &lenb) == -1)
 268                 return false;
 269
 270         return true;
 271 }
 272
 273
 274 //// FreeBSD, NetBSD, DragonFlyBSD
 275 #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
 276
 277 bool getCurrentExecPath(char *buf, size_t len)
 278 {
 279         // Try getting path from procfs first, since valgrind
 280         // doesn't work with the latter
 281         if (getExecPathFromProcfs(buf, len))
 282                 return true;
 283
 284         int mib[4];
 285
 286         mib[0] = CTL_KERN;
 287         mib[1] = KERN_PROC;
 288         mib[2] = KERN_PROC_PATHNAME;
 289         mib[3] = -1;
 290
 291         if (sysctl(mib, 4, buf, &len, NULL, 0) == -1)
 292                 return false;
 293
 294         return true;
 295 }
 296
 297
 298 //// Solaris
 299 #elif defined(__sun) || defined(sun)
 300
 301 bool getCurrentExecPath(char *buf, size_t len)
 302 {
 303         const char *exec = getexecname();
 304         if (exec == NULL)
 305                 return false;
 306
 307         if (strlcpy(buf, exec, len) >= len)
 308                 return false;
 309
 310         return true;
 311 }
 312
 313
 314 // HP-UX
 315 #elif defined(__hpux)
 316
 317 bool getCurrentExecPath(char *buf, size_t len)
 318 {
 319         struct pst_status psts;
 320
 321         if (pstat_getproc(&psts, sizeof(psts), 0, getpid()) == -1)
 322                 return false;
 323
 324         if (pstat_getpathname(buf, len, &psts.pst_fid_text) == -1)
 325                 return false;
 326
 327         return true;
 328 }
 329
 330
 331 #else
 332
 333 bool getCurrentExecPath(char *buf, size_t len)
 334 {
 335         return false;
 336 }
 337
 338 #endif
 339
 340
 341 //// Windows
 342 #if defined(_WIN32)
 343
 344 bool setSystemPaths()
 345 {
 346         char buf[BUFSIZ];
 347
 348         // Find path of executable and set path_share relative to it
 349         FATAL_ERROR_IF(!getCurrentExecPath(buf, sizeof(buf)),
 350                 "Failed to get current executable path");
 351         pathRemoveFile(buf, '\\');
 352
 353         // Use ".\bin\.."
 354         path_share = std::string(buf) + "\\..";
 355
 356         // Use "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
 357         DWORD len = GetEnvironmentVariable("APPDATA", buf, sizeof(buf));
 358         FATAL_ERROR_IF(len == 0 || len > sizeof(buf), "Failed to get APPDATA");
 359
 360         path_user = std::string(buf) + DIR_DELIM + PROJECT_NAME;
 361         return true;
 362 }
 363
 364
 365 //// Linux
 366 #elif defined(linux) || defined(__linux)
 367
 368 bool setSystemPaths()
 369 {
 370         char buf[BUFSIZ];
 371
 372         if (!getCurrentExecPath(buf, sizeof(buf))) {
 373 #ifdef __ANDROID__
 374                 errorstream << "Unable to read bindir "<< std::endl;
 375 #else
 376                 FATAL_ERROR("Unable to read bindir");
 377 #endif
 378                 return false;
 379         }
 380
 381         pathRemoveFile(buf, '/');
 382         std::string bindir(buf);
 383
 384         // Find share directory from these.
 385         // It is identified by containing the subdirectory "builtin".
 386         std::list<std::string> trylist;
 387         std::string static_sharedir = STATIC_SHAREDIR;
 388         if (static_sharedir != "" && static_sharedir != ".")
 389                 trylist.push_back(static_sharedir);
 390
 391         trylist.push_back(bindir + DIR_DELIM ".." DIR_DELIM "share"
 392                 DIR_DELIM + PROJECT_NAME);
 393         trylist.push_back(bindir + DIR_DELIM "..");
 394
 395 #ifdef __ANDROID__
 396         trylist.push_back(path_user);
 397 #endif
 398
 399         for (std::list<std::string>::const_iterator
 400                         i = trylist.begin(); i != trylist.end(); i++) {
 401                 const std::string &trypath = *i;
 402                 if (!fs::PathExists(trypath) ||
 403                         !fs::PathExists(trypath + DIR_DELIM + "builtin")) {
 404                         dstream << "WARNING: system-wide share not found at \""
 405                                         << trypath << "\""<< std::endl;
 406                         continue;
 407                 }
 408
 409                 // Warn if was not the first alternative
 410                 if (i != trylist.begin()) {
 411                         dstream << "WARNING: system-wide share found at \""
 412                                         << trypath << "\"" << std::endl;
 413                 }
 414
 415                 path_share = trypath;
 416                 break;
 417         }
 418
 419 #ifndef __ANDROID__
 420         path_user = std::string(getenv("HOME")) + DIR_DELIM "."
 421                 + PROJECT_NAME;
 422 #endif
 423
 424         return true;
 425 }
 426
 427
 428 //// Mac OS X
 429 #elif defined(__APPLE__)
 430
 431 bool setSystemPaths()
 432 {
 433         CFBundleRef main_bundle = CFBundleGetMainBundle();
 434         CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
 435         char path[PATH_MAX];
 436         if (CFURLGetFileSystemRepresentation(resources_url,
 437                         TRUE, (UInt8 *)path, PATH_MAX)) {
 438                 path_share = std::string(path);
 439         } else {
 440                 dstream << "WARNING: Could not determine bundle resource path" << std::endl;
 441         }
 442         CFRelease(resources_url);
 443
 444         path_user = std::string(getenv("HOME"))
 445                 + "/Library/Application Support/"
 446                 + PROJECT_NAME;
 447         return true;
 448 }
 449
 450
 451 #else
 452
 453 bool setSystemPaths()
 454 {
 455         path_share = STATIC_SHAREDIR;
 456         path_user  = std::string(getenv("HOME")) + DIR_DELIM "."
 457                 + lowercase(PROJECT_NAME);
 458         return true;
 459 }
 460
 461
 462 #endif
 463
 464
 465 void initializePaths()
 466 {
 467 #if RUN_IN_PLACE
 468         char buf[BUFSIZ];
 469
 470         infostream << "Using relative paths (RUN_IN_PLACE)" << std::endl;
 471
 472         bool success =
 473                 getCurrentExecPath(buf, sizeof(buf)) ||
 474                 getExecPathFromProcfs(buf, sizeof(buf));
 475
 476         if (success) {
 477                 pathRemoveFile(buf, DIR_DELIM_CHAR);
 478                 std::string execpath(buf);
 479
 480                 path_share = execpath + DIR_DELIM "..";
 481                 path_user  = execpath + DIR_DELIM "..";
 482
 483                 if (detectMSVCBuildDir(execpath)) {
 484                         path_share += DIR_DELIM "..";
 485                         path_user  += DIR_DELIM "..";
 486                 }
 487         } else {
 488                 errorstream << "Failed to get paths by executable location, "
 489                         "trying cwd" << std::endl;
 490
 491                 if (!getCurrentWorkingDir(buf, sizeof(buf)))
 492                         FATAL_ERROR("Ran out of methods to get paths");
 493
 494                 size_t cwdlen = strlen(buf);
 495                 if (cwdlen >= 1 && buf[cwdlen - 1] == DIR_DELIM_CHAR) {
 496                         cwdlen--;
 497                         buf[cwdlen] = '\0';
 498                 }
 499
 500                 if (cwdlen >= 4 && !strcmp(buf + cwdlen - 4, DIR_DELIM "bin"))
 501                         pathRemoveFile(buf, DIR_DELIM_CHAR);
 502
 503                 std::string execpath(buf);
 504
 505                 path_share = execpath;
 506                 path_user  = execpath;
 507         }
 508 #else
 509         infostream << "Using system-wide paths (NOT RUN_IN_PLACE)" << std::endl;
 510
 511         if (!setSystemPaths())
 512                 errorstream << "Failed to get one or more system-wide path" << std::endl;
 513
 514 #endif
 515 #ifdef STATIC_LOCALEDIR
 516         path_locale = STATIC_LOCALEDIR[0] ? STATIC_LOCALEDIR : getDataPath("locale");
 517 #else
 518         path_locale = getDataPath("locale");
 519 #endif
 520
 521         infostream << "Detected share path: " << path_share << std::endl;
 522         infostream << "Detected user path: " << path_user << std::endl;
 523 }
 524
 525
 526
 527 void setXorgClassHint(const video::SExposedVideoData &video_data,
 528         const std::string &name)
 529 {
 530 #ifdef XORG_USED
 531         if (video_data.OpenGLLinux.X11Display == NULL)
 532                 return;
 533
 534         XClassHint *classhint = XAllocClassHint();
 535         classhint->res_name  = (char *)name.c_str();
 536         classhint->res_class = (char *)name.c_str();
 537
 538         XSetClassHint((Display *)video_data.OpenGLLinux.X11Display,
 539                 video_data.OpenGLLinux.X11Window, classhint);
 540         XFree(classhint);
 541 #endif
 542 }
 543
 544
 545 ////
 546 //// Video/Display Information (Client-only)
 547 ////
 548
 549 #ifndef SERVER
 550
 551 static irr::IrrlichtDevice *device;
 552
 553 void initIrrlicht(irr::IrrlichtDevice *device_)
 554 {
 555         device = device_;
 556 }
 557
 558 v2u32 getWindowSize()
 559 {
 560         return device->getVideoDriver()->getScreenSize();
 561 }
 562
 563
 564 std::vector<core::vector3d<u32> > getSupportedVideoModes()
 565 {
 566         IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
 567         sanity_check(nulldevice != NULL);
 568
 569         std::vector<core::vector3d<u32> > mlist;
 570         video::IVideoModeList *modelist = nulldevice->getVideoModeList();
 571
 572         u32 num_modes = modelist->getVideoModeCount();
 573         for (u32 i = 0; i != num_modes; i++) {
 574                 core::dimension2d<u32> mode_res = modelist->getVideoModeResolution(i);
 575                 s32 mode_depth = modelist->getVideoModeDepth(i);
 576                 mlist.push_back(core::vector3d<u32>(mode_res.Width, mode_res.Height, mode_depth));
 577         }
 578
 579         nulldevice->drop();
 580
 581         return mlist;
 582 }
 583
 584 std::vector<irr::video::E_DRIVER_TYPE> getSupportedVideoDrivers()
 585 {
 586         std::vector<irr::video::E_DRIVER_TYPE> drivers;
 587
 588         for (int i = 0; i != irr::video::EDT_COUNT; i++) {
 589                 if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE)i))
 590                         drivers.push_back((irr::video::E_DRIVER_TYPE)i);
 591         }
 592
 593         return drivers;
 594 }
 595
 596 const char *getVideoDriverName(irr::video::E_DRIVER_TYPE type)
 597 {
 598         static const char *driver_ids[] = {
 599                 "null",
 600                 "software",
 601                 "burningsvideo",
 602                 "direct3d8",
 603                 "direct3d9",
 604                 "opengl",
 605                 "ogles1",
 606                 "ogles2",
 607         };
 608
 609         return driver_ids[type];
 610 }
 611
 612
 613 const char *getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
 614 {
 615         static const char *driver_names[] = {
 616                 "NULL Driver",
 617                 "Software Renderer",
 618                 "Burning's Video",
 619                 "Direct3D 8",
 620                 "Direct3D 9",
 621                 "OpenGL",
 622                 "OpenGL ES1",
 623                 "OpenGL ES2",
 624         };
 625
 626         return driver_names[type];
 627 }
 628
 629 #       ifndef __ANDROID__
 630 #               ifdef XORG_USED
 631
 632 static float calcDisplayDensity()
 633 {
 634         const char *current_display = getenv("DISPLAY");
 635
 636         if (current_display != NULL) {
 637                 Display *x11display = XOpenDisplay(current_display);
 638
 639                 if (x11display != NULL) {
 640                         /* try x direct */
 641                         float dpi_height = floor(DisplayHeight(x11display, 0) /
 642                                                         (DisplayHeightMM(x11display, 0) * 0.039370) + 0.5);
 643                         float dpi_width = floor(DisplayWidth(x11display, 0) /
 644                                                         (DisplayWidthMM(x11display, 0) * 0.039370) + 0.5);
 645
 646                         XCloseDisplay(x11display);
 647
 648                         return std::max(dpi_height,dpi_width) / 96.0;
 649                 }
 650         }
 651
 652         /* return manually specified dpi */
 653         return g_settings->getFloat("screen_dpi")/96.0;
 654 }
 655
 656
 657 float getDisplayDensity()
 658 {
 659         static float cached_display_density = calcDisplayDensity();
 660         return cached_display_density;
 661 }
 662
 663
 664 #               else // XORG_USED
 665 float getDisplayDensity()
 666 {
 667         return g_settings->getFloat("screen_dpi")/96.0;
 668 }
 669 #               endif // XORG_USED
 670
 671 v2u32 getDisplaySize()
 672 {
 673         IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
 674
 675         core::dimension2d<u32> deskres = nulldevice->getVideoModeList()->getDesktopResolution();
 676         nulldevice -> drop();
 677
 678         return deskres;
 679 }
 680 #       endif // __ANDROID__
 681 #endif // SERVER
 682
 683 } //namespace porting
 684