]> git.lizzy.rs Git - minetest.git/blobdiff - src/porting.cpp
[CSM] Add flavour limits controlled by server (#5930)
[minetest.git] / src / porting.cpp
index cb9f3270bea76533a9214d8dce50fd25701eccbb..b453b7f76d0dbf02338a7d2c926814046bbd758f 100644 (file)
@@ -25,10 +25,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "porting.h"
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__)  || defined(__NetBSD__) || defined(__DragonFly__)
        #include <sys/types.h>
        #include <sys/sysctl.h>
 #elif defined(_WIN32)
+       #include <windows.h>
+       #include <wincrypt.h>
        #include <algorithm>
 #endif
 #if !defined(_WIN32)
@@ -39,14 +41,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
        #define _PSTAT64
        #include <sys/pstat.h>
 #endif
-#if !defined(_WIN32) && !defined(__APPLE__) && \
-       !defined(__ANDROID__) && !defined(SERVER)
-       #define XORG_USED
-#endif
-#ifdef XORG_USED
-       #include <X11/Xlib.h>
-       #include <X11/Xutil.h>
-#endif
 
 #include "config.h"
 #include "debug.h"
@@ -73,26 +67,32 @@ bool * signal_handler_killstatus(void)
 #if !defined(_WIN32) // POSIX
        #include <signal.h>
 
-void sigint_handler(int sig)
+void signal_handler(int sig)
 {
-       if(!g_killed) {
-               dstream<<DTIME<<"INFO: sigint_handler(): "
-                               <<"Ctrl-C pressed, shutting down."<<std::endl;
+       if (!g_killed) {
+               if (sig == SIGINT) {
+                       dstream << "INFO: signal_handler(): "
+                               << "Ctrl-C pressed, shutting down." << std::endl;
+               } else if (sig == SIGTERM) {
+                       dstream << "INFO: signal_handler(): "
+                               << "got SIGTERM, shutting down." << std::endl;
+               }
 
                // Comment out for less clutter when testing scripts
-               /*dstream<<DTIME<<"INFO: sigint_handler(): "
-                               <<"Printing debug stacks"<<std::endl;
+               /*dstream << "INFO: sigint_handler(): "
+                               << "Printing debug stacks" << std::endl;
                debug_stacks_print();*/
 
                g_killed = true;
        } else {
-               (void)signal(SIGINT, SIG_DFL);
+               (void)signal(sig, SIG_DFL);
        }
 }
 
 void signal_handler_init(void)
 {
-       (void)signal(SIGINT, sigint_handler);
+       (void)signal(SIGINT, signal_handler);
+       (void)signal(SIGTERM, signal_handler);
 }
 
 #else // _WIN32
@@ -105,8 +105,8 @@ BOOL WINAPI event_handler(DWORD sig)
        case CTRL_CLOSE_EVENT:
        case CTRL_LOGOFF_EVENT:
        case CTRL_SHUTDOWN_EVENT:
-               if (g_killed == false) {
-                       dstream << DTIME << "INFO: event_handler(): "
+               if (!g_killed) {
+                       dstream << "INFO: event_handler(): "
                                << "Ctrl+C, Close Event, Logoff Event or Shutdown Event,"
                                " shutting down." << std::endl;
                        g_killed = true;
@@ -136,6 +136,9 @@ void signal_handler_init(void)
 // Default to RUN_IN_PLACE style relative paths
 std::string path_share = "..";
 std::string path_user = "..";
+std::string path_locale = path_share + DIR_DELIM + "locale";
+std::string path_cache = path_user + DIR_DELIM + "cache";
+
 
 std::string getDataPath(const char *subpath)
 {
@@ -158,6 +161,8 @@ bool detectMSVCBuildDir(const std::string &path)
 {
        const char *ends[] = {
                "bin\\Release",
+               "bin\\MinSizeRel",
+               "bin\\RelWithDebInfo",
                "bin\\Debug",
                "bin\\Build",
                NULL
@@ -245,7 +250,7 @@ bool getCurrentExecPath(char *buf, size_t len)
 
 
 //// Linux
-#elif defined(linux) || defined(__linux) || defined(__linux__)
+#elif defined(__linux__)
 
 bool getCurrentExecPath(char *buf, size_t len)
 {
@@ -361,7 +366,7 @@ bool setSystemPaths()
 
 
 //// Linux
-#elif defined(linux) || defined(__linux)
+#elif defined(__linux__)
 
 bool setSystemPaths()
 {
@@ -395,18 +400,18 @@ bool setSystemPaths()
 #endif
 
        for (std::list<std::string>::const_iterator
-                       i = trylist.begin(); i != trylist.end(); i++) {
+                       i = trylist.begin(); i != trylist.end(); ++i) {
                const std::string &trypath = *i;
                if (!fs::PathExists(trypath) ||
                        !fs::PathExists(trypath + DIR_DELIM + "builtin")) {
-                       dstream << "WARNING: system-wide share not found at \""
+                       warningstream << "system-wide share not found at \""
                                        << trypath << "\""<< std::endl;
                        continue;
                }
 
                // Warn if was not the first alternative
                if (i != trylist.begin()) {
-                       dstream << "WARNING: system-wide share found at \""
+                       warningstream << "system-wide share found at \""
                                        << trypath << "\"" << std::endl;
                }
 
@@ -435,7 +440,7 @@ bool setSystemPaths()
                        TRUE, (UInt8 *)path, PATH_MAX)) {
                path_share = std::string(path);
        } else {
-               dstream << "WARNING: Could not determine bundle resource path" << std::endl;
+               warningstream << "Could not determine bundle resource path" << std::endl;
        }
        CFRelease(resources_url);
 
@@ -459,6 +464,25 @@ bool setSystemPaths()
 
 #endif
 
+void migrateCachePath()
+{
+       const std::string local_cache_path = path_user + DIR_DELIM + "cache";
+
+       // Delete tmp folder if it exists (it only ever contained
+       // a temporary ogg file, which is no longer used).
+       if (fs::PathExists(local_cache_path + DIR_DELIM + "tmp"))
+               fs::RecursiveDelete(local_cache_path + DIR_DELIM + "tmp");
+
+       // Bail if migration impossible
+       if (path_cache == local_cache_path || !fs::PathExists(local_cache_path)
+                       || fs::PathExists(path_cache)) {
+               return;
+       }
+       if (!fs::Rename(local_cache_path, path_cache)) {
+               errorstream << "Failed to migrate local cache path "
+                       "to system path!" << std::endl;
+       }
+}
 
 void initializePaths()
 {
@@ -503,176 +527,127 @@ void initializePaths()
                path_share = execpath;
                path_user  = execpath;
        }
-
+       path_cache = path_user + DIR_DELIM + "cache";
 #else
        infostream << "Using system-wide paths (NOT RUN_IN_PLACE)" << std::endl;
 
        if (!setSystemPaths())
                errorstream << "Failed to get one or more system-wide path" << std::endl;
 
+       // Initialize path_cache
+       // First try $XDG_CACHE_HOME/PROJECT_NAME
+       const char *cache_dir = getenv("XDG_CACHE_HOME");
+       const char *home_dir = getenv("HOME");
+       if (cache_dir) {
+               path_cache = std::string(cache_dir) + DIR_DELIM + PROJECT_NAME;
+       } else if (home_dir) {
+               // Then try $HOME/.cache/PROJECT_NAME
+               path_cache = std::string(home_dir) + DIR_DELIM + ".cache"
+                       + DIR_DELIM + PROJECT_NAME;
+       } else {
+               // If neither works, use $PATH_USER/cache
+               path_cache = path_user + DIR_DELIM + "cache";
+       }
+       // Migrate cache folder to new location if possible
+       migrateCachePath();
 #endif
 
        infostream << "Detected share path: " << path_share << std::endl;
        infostream << "Detected user path: " << path_user << std::endl;
+       infostream << "Detected cache path: " << path_cache << std::endl;
+
+#if USE_GETTEXT
+       bool found_localedir = false;
+#  ifdef STATIC_LOCALEDIR
+       if (STATIC_LOCALEDIR[0] && fs::PathExists(STATIC_LOCALEDIR)) {
+               found_localedir = true;
+               path_locale = STATIC_LOCALEDIR;
+               infostream << "Using locale directory " << STATIC_LOCALEDIR << std::endl;
+       } else {
+               path_locale = getDataPath("locale");
+               if (fs::PathExists(path_locale)) {
+                       found_localedir = true;
+                       infostream << "Using in-place locale directory " << path_locale
+                               << " even though a static one was provided "
+                               << "(RUN_IN_PLACE or CUSTOM_LOCALEDIR)." << std::endl;
+               }
+       }
+#  else
+       path_locale = getDataPath("locale");
+       if (fs::PathExists(path_locale)) {
+               found_localedir = true;
+       }
+#  endif
+       if (!found_localedir) {
+               warningstream << "Couldn't find a locale directory!" << std::endl;
+       }
+#endif  // USE_GETTEXT
 }
 
-
-
-void setXorgClassHint(const video::SExposedVideoData &video_data,
-       const std::string &name)
-{
-#ifdef XORG_USED
-       if (video_data.OpenGLLinux.X11Display == NULL)
-               return;
-
-       XClassHint *classhint = XAllocClassHint();
-       classhint->res_name  = (char *)name.c_str();
-       classhint->res_class = (char *)name.c_str();
-
-       XSetClassHint((Display *)video_data.OpenGLLinux.X11Display,
-               video_data.OpenGLLinux.X11Window, classhint);
-       XFree(classhint);
-#endif
-}
-
-
 ////
-//// Video/Display Information (Client-only)
+//// OS-specific Secure Random
 ////
 
-#ifndef SERVER
-
-static irr::IrrlichtDevice *device;
-
-void initIrrlicht(irr::IrrlichtDevice *device_)
-{
-       device = device_;
-}
-
-v2u32 getWindowSize()
-{
-       return device->getVideoDriver()->getScreenSize();
-}
-
+#ifdef WIN32
 
-std::vector<core::vector3d<u32> > getSupportedVideoModes()
+bool secure_rand_fill_buf(void *buf, size_t len)
 {
-       IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
-       sanity_check(nulldevice != NULL);
+       HCRYPTPROV wctx;
 
-       std::vector<core::vector3d<u32> > mlist;
-       video::IVideoModeList *modelist = nulldevice->getVideoModeList();
-
-       u32 num_modes = modelist->getVideoModeCount();
-       for (u32 i = 0; i != num_modes; i++) {
-               core::dimension2d<u32> mode_res = modelist->getVideoModeResolution(i);
-               s32 mode_depth = modelist->getVideoModeDepth(i);
-               mlist.push_back(core::vector3d<u32>(mode_res.Width, mode_res.Height, mode_depth));
-       }
-
-       nulldevice->drop();
+       if (!CryptAcquireContext(&wctx, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
+               return false;
 
-       return mlist;
+       CryptGenRandom(wctx, len, (BYTE *)buf);
+       CryptReleaseContext(wctx, 0);
+       return true;
 }
 
-std::vector<irr::video::E_DRIVER_TYPE> getSupportedVideoDrivers()
-{
-       std::vector<irr::video::E_DRIVER_TYPE> drivers;
-
-       for (int i = 0; i != irr::video::EDT_COUNT; i++) {
-               if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE)i))
-                       drivers.push_back((irr::video::E_DRIVER_TYPE)i);
-       }
-
-       return drivers;
-}
+#else
 
-const char *getVideoDriverName(irr::video::E_DRIVER_TYPE type)
+bool secure_rand_fill_buf(void *buf, size_t len)
 {
-       static const char *driver_ids[] = {
-               "null",
-               "software",
-               "burningsvideo",
-               "direct3d8",
-               "direct3d9",
-               "opengl",
-               "ogles1",
-               "ogles2",
-       };
-
-       return driver_ids[type];
-}
-
+       // N.B.  This function checks *only* for /dev/urandom, because on most
+       // common OSes it is non-blocking, whereas /dev/random is blocking, and it
+       // is exceptionally uncommon for there to be a situation where /dev/random
+       // exists but /dev/urandom does not.  This guesswork is necessary since
+       // random devices are not covered by any POSIX standard...
+       FILE *fp = fopen("/dev/urandom", "rb");
+       if (!fp)
+               return false;
 
-const char *getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
-{
-       static const char *driver_names[] = {
-               "NULL Driver",
-               "Software Renderer",
-               "Burning's Video",
-               "Direct3D 8",
-               "Direct3D 9",
-               "OpenGL",
-               "OpenGL ES1",
-               "OpenGL ES2",
-       };
+       bool success = fread(buf, len, 1, fp) == 1;
 
-       return driver_names[type];
+       fclose(fp);
+       return success;
 }
 
-#      ifndef __ANDROID__
-#              ifdef XORG_USED
+#endif
 
-static float calcDisplayDensity()
+void attachOrCreateConsole(void)
 {
-       const char *current_display = getenv("DISPLAY");
-
-       if (current_display != NULL) {
-               Display *x11display = XOpenDisplay(current_display);
-
-               if (x11display != NULL) {
-                       /* try x direct */
-                       float dpi_height = floor(DisplayHeight(x11display, 0) /
-                                                       (DisplayHeightMM(x11display, 0) * 0.039370) + 0.5);
-                       float dpi_width = floor(DisplayWidth(x11display, 0) /
-                                                       (DisplayWidthMM(x11display, 0) * 0.039370) + 0.5);
-
-                       XCloseDisplay(x11display);
-
-                       return std::max(dpi_height,dpi_width) / 96.0;
-               }
+#ifdef _WIN32
+       static bool consoleAllocated = false;
+       const bool redirected = (_fileno(stdout) == -2 || _fileno(stdout) == -1); // If output is redirected to e.g a file
+       if (!consoleAllocated && redirected && (AttachConsole(ATTACH_PARENT_PROCESS) || AllocConsole())) {
+               freopen("CONOUT$", "w", stdout);
+               freopen("CONOUT$", "w", stderr);
+               consoleAllocated = true;
        }
-
-       /* return manually specified dpi */
-       return g_settings->getFloat("screen_dpi")/96.0;
-}
-
-
-float getDisplayDensity()
-{
-       static float cached_display_density = calcDisplayDensity();
-       return cached_display_density;
+#endif
 }
 
+// Load performance counter frequency only once at startup
+#ifdef _WIN32
 
-#              else // XORG_USED
-float getDisplayDensity()
+inline double get_perf_freq()
 {
-       return g_settings->getFloat("screen_dpi")/96.0;
+       LARGE_INTEGER freq;
+       QueryPerformanceFrequency(&freq);
+       return freq.QuadPart;
 }
-#              endif // XORG_USED
 
-v2u32 getDisplaySize()
-{
-       IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
+double perf_freq = get_perf_freq();
 
-       core::dimension2d<u32> deskres = nulldevice->getVideoModeList()->getDesktopResolution();
-       nulldevice -> drop();
-
-       return deskres;
-}
-#      endif // __ANDROID__
-#endif // SERVER
+#endif
 
 } //namespace porting
-