X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fporting.cpp;h=98b85b7d00dcedceab0a2e3b80a9539b786ac591;hb=65c09a96f41705bb8e75fc5ff4276342be91ed11;hp=ef461242d28cad1afb37e34c889d3d9df55cfe71;hpb=75ddf4d221301bea206311df4834903c64c566c1;p=minetest.git

diff --git a/src/porting.cpp b/src/porting.cpp
index ef461242d..98b85b7d0 100644
--- a/src/porting.cpp
+++ b/src/porting.cpp
@@ -25,29 +25,36 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "porting.h"
 
-#if defined(__APPLE__)
-	#include <mach-o/dyld.h>
-	#include "CoreFoundation/CoreFoundation.h"
-#elif defined(__FreeBSD__)
+#if defined(__FreeBSD__)
 	#include <sys/types.h>
 	#include <sys/sysctl.h>
 #elif defined(_WIN32)
+	#include <windows.h>
+	#include <wincrypt.h>
 	#include <algorithm>
-#elif defined(__LINUX)
-	#include <sys/types.h>
 #endif
 #if !defined(_WIN32)
-	#include <sys/stat.h>
 	#include <unistd.h>
 	#include <sys/utsname.h>
 #endif
+#if defined(__hpux)
+	#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"
 #include "filesys.h"
 #include "log.h"
 #include "util/string.h"
-#include "main.h"
 #include "settings.h"
 #include <list>
 
@@ -70,20 +77,17 @@ bool * signal_handler_killstatus(void)
 
 void sigint_handler(int sig)
 {
-	if(g_killed == false)
-	{
-		dstream<<DTIME<<"INFO: sigint_handler(): "
-				<<"Ctrl-C pressed, shutting down."<<std::endl;
+	if (!g_killed) {
+		dstream << "INFO: sigint_handler(): "
+			<< "Ctrl-C pressed, 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
-	{
+	} else {
 		(void)signal(SIGINT, SIG_DFL);
 	}
 }
@@ -96,168 +100,35 @@ void signal_handler_init(void)
 #else // _WIN32
 	#include <signal.h>
 
-	BOOL WINAPI event_handler(DWORD sig)
-	{
-		switch(sig)
-		{
-		case CTRL_C_EVENT:
-		case CTRL_CLOSE_EVENT:
-		case CTRL_LOGOFF_EVENT:
-		case CTRL_SHUTDOWN_EVENT:
-
-			if(g_killed == false)
-			{
-				dstream<<DTIME<<"INFO: event_handler(): "
-						<<"Ctrl+C, Close Event, Logoff Event or Shutdown Event, shutting down."<<std::endl;
-				// Comment out for less clutter when testing scripts
-				/*dstream<<DTIME<<"INFO: event_handler(): "
-						<<"Printing debug stacks"<<std::endl;
-				debug_stacks_print();*/
-
-				g_killed = true;
-			}
-			else
-			{
-				(void)signal(SIGINT, SIG_DFL);
-			}
-
-			break;
-		case CTRL_BREAK_EVENT:
-			break;
+BOOL WINAPI event_handler(DWORD sig)
+{
+	switch (sig) {
+	case CTRL_C_EVENT:
+	case CTRL_CLOSE_EVENT:
+	case CTRL_LOGOFF_EVENT:
+	case CTRL_SHUTDOWN_EVENT:
+		if (!g_killed) {
+			dstream << "INFO: event_handler(): "
+				<< "Ctrl+C, Close Event, Logoff Event or Shutdown Event,"
+				" shutting down." << std::endl;
+			g_killed = true;
+		} else {
+			(void)signal(SIGINT, SIG_DFL);
 		}
-
-		return TRUE;
+		break;
+	case CTRL_BREAK_EVENT:
+		break;
 	}
 
-void signal_handler_init(void)
-{
-	SetConsoleCtrlHandler( (PHANDLER_ROUTINE)event_handler,TRUE);
+	return TRUE;
 }
 
-#endif
-
-
-/*
-	Multithreading support
-*/
-int getNumberOfProcessors()
+void signal_handler_init(void)
 {
-#if defined(_SC_NPROCESSORS_ONLN)
-
-	return sysconf(_SC_NPROCESSORS_ONLN);
-
-#elif defined(__FreeBSD__) || defined(__APPLE__)
-
-	unsigned int len, count;
-	len = sizeof(count);
-	return sysctlbyname("hw.ncpu", &count, &len, NULL, 0);
-
-#elif defined(_GNU_SOURCE)
-
-	return get_nprocs();
-
-#elif defined(_WIN32)
-
-	SYSTEM_INFO sysinfo;
-	GetSystemInfo(&sysinfo);
-	return sysinfo.dwNumberOfProcessors;
-
-#elif defined(PTW32_VERSION) || defined(__hpux)
-
-	return pthread_num_processors_np();
-
-#else
-
-	return 1;
-
-#endif
+	SetConsoleCtrlHandler((PHANDLER_ROUTINE)event_handler, TRUE);
 }
 
-
-bool threadBindToProcessor(threadid_t tid, int pnumber)
-{
-#if defined(_WIN32)
-
-	HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
-	if (!hThread)
-		return false;
-
-	bool success = SetThreadAffinityMask(hThread, 1 << pnumber) != 0;
-
-	CloseHandle(hThread);
-	return success;
-
-#elif (defined(__FreeBSD__) && (__FreeBSD_version >= 702106)) \
-	|| defined(__linux) || defined(linux)
-
-	cpu_set_t cpuset;
-
-	CPU_ZERO(&cpuset);
-	CPU_SET(pnumber, &cpuset);
-	return pthread_setaffinity_np(tid, sizeof(cpuset), &cpuset) == 0;
-
-#elif defined(__sun) || defined(sun)
-
-	return processor_bind(P_LWPID, MAKE_LWPID_PTHREAD(tid),
-						pnumber, NULL) == 0;
-
-#elif defined(_AIX)
-	
-	return bindprocessor(BINDTHREAD, (tid_t)tid, pnumber) == 0;
-
-#elif defined(__hpux) || defined(hpux)
-
-	pthread_spu_t answer;
-
-	return pthread_processor_bind_np(PTHREAD_BIND_ADVISORY_NP,
-									&answer, pnumber, tid) == 0;
-	
-#elif defined(__APPLE__)
-
-	struct thread_affinity_policy tapol;
-	
-	thread_port_t threadport = pthread_mach_thread_np(tid);
-	tapol.affinity_tag = pnumber + 1;
-	return thread_policy_set(threadport, THREAD_AFFINITY_POLICY,
-			(thread_policy_t)&tapol, THREAD_AFFINITY_POLICY_COUNT) == KERN_SUCCESS;
-
-#else
-
-	return false;
-
 #endif
-}
-
-
-bool threadSetPriority(threadid_t tid, int prio)
-{
-#if defined(_WIN32)
-
-	HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
-	if (!hThread)
-		return false;
-
-	bool success = SetThreadPriority(hThread, prio) != 0;
-
-	CloseHandle(hThread);
-	return success;
-	
-#else
-
-	struct sched_param sparam;
-	int policy;
-	
-	if (pthread_getschedparam(tid, &policy, &sparam) != 0)
-		return false;
-		
-	int min = sched_get_priority_min(policy);
-	int max = sched_get_priority_max(policy);
-
-	sparam.sched_priority = min + prio * (max - min) / THREAD_PRIORITY_HIGHEST;
-	return pthread_setschedparam(tid, policy, &sparam) == 0;
-	
-#endif
-}
 
 
 /*
@@ -267,6 +138,9 @@ bool threadSetPriority(threadid_t tid, int prio)
 // 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)
 {
@@ -285,10 +159,16 @@ void pathRemoveFile(char *path, char delim)
 	path[i] = 0;
 }
 
-bool detectMSVCBuildDir(char *c_path)
+bool detectMSVCBuildDir(const std::string &path)
 {
-	std::string path(c_path);
-	const char *ends[] = {"bin\\Release", "bin\\Build", NULL};
+	const char *ends[] = {
+		"bin\\Release",
+		"bin\\MinSizeRel",
+		"bin\\RelWithDebInfo",
+		"bin\\Debug",
+		"bin\\Build",
+		NULL
+	};
 	return (removeStringEnd(path, ends) != "");
 }
 
@@ -306,14 +186,14 @@ std::string get_sysinfo()
 
 	oss << "Windows/" << osvi.dwMajorVersion << "."
 		<< osvi.dwMinorVersion;
-	if(osvi.szCSDVersion[0])
+	if (osvi.szCSDVersion[0])
 		oss << "-" << tmp;
 	oss << " ";
 	#ifdef _WIN64
 	oss << "x86_64";
 	#else
 	BOOL is64 = FALSE;
-	if(IsWow64Process(GetCurrentProcess(), &is64) && is64)
+	if (IsWow64Process(GetCurrentProcess(), &is64) && is64)
 		oss << "x86_64"; // 32-bit app on 64-bit OS
 	else
 		oss << "x86";
@@ -328,341 +208,580 @@ std::string get_sysinfo()
 #endif
 }
 
-void initializePaths()
+
+bool getCurrentWorkingDir(char *buf, size_t len)
 {
-#if RUN_IN_PLACE
-	/*
-		Use relative paths if RUN_IN_PLACE
-	*/
+#ifdef _WIN32
+	DWORD ret = GetCurrentDirectory(len, buf);
+	return (ret != 0) && (ret <= len);
+#else
+	return getcwd(buf, len);
+#endif
+}
 
-	infostream<<"Using relative paths (RUN_IN_PLACE)"<<std::endl;
 
-	/*
-		Windows
-	*/
-	#if defined(_WIN32)
+bool getExecPathFromProcfs(char *buf, size_t buflen)
+{
+#ifndef _WIN32
+	buflen--;
 
-	const DWORD buflen = 1000;
-	char buf[buflen];
-	DWORD len;
+	ssize_t len;
+	if ((len = readlink("/proc/self/exe",     buf, buflen)) == -1 &&
+		(len = readlink("/proc/curproc/file", buf, buflen)) == -1 &&
+		(len = readlink("/proc/curproc/exe",  buf, buflen)) == -1)
+		return false;
 
-	// Find path of executable and set path_share relative to it
-	len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
-	assert(len < buflen);
-	pathRemoveFile(buf, '\\');
+	buf[len] = '\0';
+	return true;
+#else
+	return false;
+#endif
+}
 
-	if(detectMSVCBuildDir(buf)){
-		infostream<<"MSVC build directory detected"<<std::endl;
-		path_share = std::string(buf) + "\\..\\..";
-		path_user = std::string(buf) + "\\..\\..";
-	}
-	else{
-		path_share = std::string(buf) + "\\..";
-		path_user = std::string(buf) + "\\..";
-	}
+//// Windows
+#if defined(_WIN32)
 
-	/*
-		Linux
-	*/
-	#elif defined(linux)
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	DWORD written = GetModuleFileNameA(NULL, buf, len);
+	if (written == 0 || written == len)
+		return false;
 
-	char buf[BUFSIZ];
-	memset(buf, 0, BUFSIZ);
-	// Get path to executable
-	assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
+	return true;
+}
 
-	pathRemoveFile(buf, '/');
 
-	path_share = std::string(buf) + "/..";
-	path_user = std::string(buf) + "/..";
+//// Linux
+#elif defined(linux) || defined(__linux) || defined(__linux__)
 
-	/*
-		OS X
-	*/
-	#elif defined(__APPLE__)
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	if (!getExecPathFromProcfs(buf, len))
+		return false;
 
-	//https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/dyld.3.html
-	//TODO: Test this code
-	char buf[BUFSIZ];
-	uint32_t len = sizeof(buf);
-	assert(_NSGetExecutablePath(buf, &len) != -1);
+	return true;
+}
 
-	pathRemoveFile(buf, '/');
 
-	path_share = std::string(buf) + "/..";
-	path_user = std::string(buf) + "/..";
+//// Mac OS X, Darwin
+#elif defined(__APPLE__)
+
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	uint32_t lenb = (uint32_t)len;
+	if (_NSGetExecutablePath(buf, &lenb) == -1)
+		return false;
+
+	return true;
+}
 
-	/*
-		FreeBSD
-	*/
-	#elif defined(__FreeBSD__)
+
+//// FreeBSD, NetBSD, DragonFlyBSD
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
+
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	// Try getting path from procfs first, since valgrind
+	// doesn't work with the latter
+	if (getExecPathFromProcfs(buf, len))
+		return true;
 
 	int mib[4];
-	char buf[BUFSIZ];
-	size_t len = sizeof(buf);
 
 	mib[0] = CTL_KERN;
 	mib[1] = KERN_PROC;
 	mib[2] = KERN_PROC_PATHNAME;
 	mib[3] = -1;
-	assert(sysctl(mib, 4, buf, &len, NULL, 0) != -1);
 
-	pathRemoveFile(buf, '/');
+	if (sysctl(mib, 4, buf, &len, NULL, 0) == -1)
+		return false;
 
-	path_share = std::string(buf) + "/..";
-	path_user = std::string(buf) + "/..";
+	return true;
+}
 
-	#else
 
-	//TODO: Get path of executable. This assumes working directory is bin/
-	dstream<<"WARNING: Relative path not properly supported on this platform"
-			<<std::endl;
+//// Solaris
+#elif defined(__sun) || defined(sun)
 
-	/* scriptapi no longer allows paths that start with "..", so assuming that
-	   the current working directory is bin/, strip off the last component. */
-	char *cwd = getcwd(NULL, 0);
-	pathRemoveFile(cwd, '/');
-	path_share = std::string(cwd);
-	path_user = std::string(cwd);
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	const char *exec = getexecname();
+	if (exec == NULL)
+		return false;
 
-	#endif
+	if (strlcpy(buf, exec, len) >= len)
+		return false;
 
-#else // RUN_IN_PLACE
+	return true;
+}
+
+
+// HP-UX
+#elif defined(__hpux)
+
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	struct pst_status psts;
+
+	if (pstat_getproc(&psts, sizeof(psts), 0, getpid()) == -1)
+		return false;
+
+	if (pstat_getpathname(buf, len, &psts.pst_fid_text) == -1)
+		return false;
+
+	return true;
+}
+
+
+#else
+
+bool getCurrentExecPath(char *buf, size_t len)
+{
+	return false;
+}
 
-	/*
-		Use platform-specific paths otherwise
-	*/
+#endif
 
-	infostream<<"Using system-wide paths (NOT RUN_IN_PLACE)"<<std::endl;
 
-	/*
-		Windows
-	*/
-	#if defined(_WIN32)
+//// Windows
+#if defined(_WIN32)
 
-	const DWORD buflen = 1000;
-	char buf[buflen];
-	DWORD len;
+bool setSystemPaths()
+{
+	char buf[BUFSIZ];
 
 	// Find path of executable and set path_share relative to it
-	len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
-	assert(len < buflen);
+	FATAL_ERROR_IF(!getCurrentExecPath(buf, sizeof(buf)),
+		"Failed to get current executable path");
 	pathRemoveFile(buf, '\\');
 
 	// Use ".\bin\.."
 	path_share = std::string(buf) + "\\..";
 
 	// Use "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
-	len = GetEnvironmentVariable("APPDATA", buf, buflen);
-	assert(len < buflen);
+	DWORD len = GetEnvironmentVariable("APPDATA", buf, sizeof(buf));
+	FATAL_ERROR_IF(len == 0 || len > sizeof(buf), "Failed to get APPDATA");
+
 	path_user = std::string(buf) + DIR_DELIM + PROJECT_NAME;
+	return true;
+}
 
-	/*
-		Linux
-	*/
-	#elif defined(linux)
 
-	// Get path to executable
-	std::string bindir = "";
-	{
-		char buf[BUFSIZ];
-		memset(buf, 0, BUFSIZ);
-		assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
-		pathRemoveFile(buf, '/');
-		bindir = buf;
+//// Linux
+#elif defined(linux) || defined(__linux)
+
+bool setSystemPaths()
+{
+	char buf[BUFSIZ];
+
+	if (!getCurrentExecPath(buf, sizeof(buf))) {
+#ifdef __ANDROID__
+		errorstream << "Unable to read bindir "<< std::endl;
+#else
+		FATAL_ERROR("Unable to read bindir");
+#endif
+		return false;
 	}
 
+	pathRemoveFile(buf, '/');
+	std::string bindir(buf);
+
 	// Find share directory from these.
 	// It is identified by containing the subdirectory "builtin".
 	std::list<std::string> trylist;
 	std::string static_sharedir = STATIC_SHAREDIR;
-	if(static_sharedir != "" && static_sharedir != ".")
+	if (static_sharedir != "" && static_sharedir != ".")
 		trylist.push_back(static_sharedir);
-	trylist.push_back(
-			bindir + DIR_DELIM + ".." + DIR_DELIM + "share" + DIR_DELIM + PROJECT_NAME);
-	trylist.push_back(bindir + DIR_DELIM + "..");
 
-	for(std::list<std::string>::const_iterator i = trylist.begin();
-			i != trylist.end(); i++)
-	{
+	trylist.push_back(bindir + DIR_DELIM ".." DIR_DELIM "share"
+		DIR_DELIM + PROJECT_NAME);
+	trylist.push_back(bindir + DIR_DELIM "..");
+
+#ifdef __ANDROID__
+	trylist.push_back(path_user);
+#endif
+
+	for (std::list<std::string>::const_iterator
+			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 \""
-					<<trypath<<"\""<<std::endl;
+		if (!fs::PathExists(trypath) ||
+			!fs::PathExists(trypath + DIR_DELIM + "builtin")) {
+			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 \""
-					<<trypath<<"\""<<std::endl;
+		if (i != trylist.begin()) {
+			warningstream << "system-wide share found at \""
+					<< trypath << "\"" << std::endl;
 		}
+
 		path_share = trypath;
 		break;
 	}
 
-	path_user = std::string(getenv("HOME")) + DIR_DELIM + "." + PROJECT_NAME;
+#ifndef __ANDROID__
+	path_user = std::string(getenv("HOME")) + DIR_DELIM "."
+		+ PROJECT_NAME;
+#endif
 
-	/*
-		OS X
-	*/
-	#elif defined(__APPLE__)
+	return true;
+}
 
-	// Code based on
-	// http://stackoverflow.com/questions/516200/relative-paths-not-working-in-xcode-c
+
+//// Mac OS X
+#elif defined(__APPLE__)
+
+bool setSystemPaths()
+{
 	CFBundleRef main_bundle = CFBundleGetMainBundle();
 	CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
 	char path[PATH_MAX];
-	if(CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX))
-	{
-		dstream<<"Bundle resource path: "<<path<<std::endl;
-		//chdir(path);
-		path_share = std::string(path) + DIR_DELIM + "share";
-	}
-	else
-	{
-		// error!
-		dstream<<"WARNING: Could not determine bundle resource path"<<std::endl;
+	if (CFURLGetFileSystemRepresentation(resources_url,
+			TRUE, (UInt8 *)path, PATH_MAX)) {
+		path_share = std::string(path);
+	} else {
+		warningstream << "Could not determine bundle resource path" << std::endl;
 	}
 	CFRelease(resources_url);
 
-	path_user = std::string(getenv("HOME")) + "/Library/Application Support/" + PROJECT_NAME;
+	path_user = std::string(getenv("HOME"))
+		+ "/Library/Application Support/"
+		+ PROJECT_NAME;
+	return true;
+}
 
-	#else // FreeBSD, and probably many other POSIX-like systems.
 
+#else
+
+bool setSystemPaths()
+{
 	path_share = STATIC_SHAREDIR;
-	path_user = std::string(getenv("HOME")) + DIR_DELIM + "." + PROJECT_NAME;
+	path_user  = std::string(getenv("HOME")) + DIR_DELIM "."
+		+ lowercase(PROJECT_NAME);
+	return true;
+}
 
-	#endif
 
-#endif // RUN_IN_PLACE
+#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;
+	}
 }
 
-static irr::IrrlichtDevice* device;
+void initializePaths()
+{
+#if RUN_IN_PLACE
+	char buf[BUFSIZ];
+
+	infostream << "Using relative paths (RUN_IN_PLACE)" << std::endl;
+
+	bool success =
+		getCurrentExecPath(buf, sizeof(buf)) ||
+		getExecPathFromProcfs(buf, sizeof(buf));
+
+	if (success) {
+		pathRemoveFile(buf, DIR_DELIM_CHAR);
+		std::string execpath(buf);
+
+		path_share = execpath + DIR_DELIM "..";
+		path_user  = execpath + DIR_DELIM "..";
+
+		if (detectMSVCBuildDir(execpath)) {
+			path_share += DIR_DELIM "..";
+			path_user  += DIR_DELIM "..";
+		}
+	} else {
+		errorstream << "Failed to get paths by executable location, "
+			"trying cwd" << std::endl;
+
+		if (!getCurrentWorkingDir(buf, sizeof(buf)))
+			FATAL_ERROR("Ran out of methods to get paths");
+
+		size_t cwdlen = strlen(buf);
+		if (cwdlen >= 1 && buf[cwdlen - 1] == DIR_DELIM_CHAR) {
+			cwdlen--;
+			buf[cwdlen] = '\0';
+		}
+
+		if (cwdlen >= 4 && !strcmp(buf + cwdlen - 4, DIR_DELIM "bin"))
+			pathRemoveFile(buf, DIR_DELIM_CHAR);
+
+		std::string execpath(buf);
+
+		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;
+
+#ifdef 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 initIrrlicht(irr::IrrlichtDevice * _device)
+void setXorgClassHint(const video::SExposedVideoData &video_data,
+	const std::string &name)
 {
-	device = _device;
+#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)
+////
+
 #ifndef SERVER
+
+static irr::IrrlichtDevice *device;
+
+void initIrrlicht(irr::IrrlichtDevice *device_)
+{
+	device = device_;
+}
+
 v2u32 getWindowSize()
 {
 	return device->getVideoDriver()->getScreenSize();
 }
 
 
-float getDisplayDensity()
+std::vector<core::vector3d<u32> > getSupportedVideoModes()
 {
-	float gui_scaling = g_settings->getFloat("gui_scaling");
-	// using Y here feels like a bug, this needs to be discussed later!
-	if (getWindowSize().Y <= 800) {
-		return (2.0/3.0) * gui_scaling;
-	}
-	if (getWindowSize().Y <= 1280) {
-		return 1.0 * gui_scaling;
+	IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
+	sanity_check(nulldevice != NULL);
+
+	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));
 	}
 
-	return (4.0/3.0) * gui_scaling;
+	nulldevice->drop();
+
+	return mlist;
 }
 
-v2u32 getDisplaySize()
+std::vector<irr::video::E_DRIVER_TYPE> getSupportedVideoDrivers()
 {
-	IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
+	std::vector<irr::video::E_DRIVER_TYPE> drivers;
 
-	core::dimension2d<u32> deskres = nulldevice->getVideoModeList()->getDesktopResolution();
-	nulldevice -> drop();
+	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 deskres;
+	return drivers;
 }
-#endif
 
-#ifdef SERVER
-#ifdef _WIN32
-void daemonize()
+const char *getVideoDriverName(irr::video::E_DRIVER_TYPE type)
 {
-	errorstream << "daemonize not implemented on windows" << std::endl;
+	static const char *driver_ids[] = {
+		"null",
+		"software",
+		"burningsvideo",
+		"direct3d8",
+		"direct3d9",
+		"opengl",
+		"ogles1",
+		"ogles2",
+	};
+
+	return driver_ids[type];
 }
-#else // assume posix like os
 
-static std::string get_pidfile_path()
+
+const char *getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
 {
-	// make it static to make sure it won't change after first call to this fct
-	static std::string path_pidfile = "";
-	static bool initialized = false;
+	static const char *driver_names[] = {
+		"NULL Driver",
+		"Software Renderer",
+		"Burning's Video",
+		"Direct3D 8",
+		"Direct3D 9",
+		"OpenGL",
+		"OpenGL ES1",
+		"OpenGL ES2",
+	};
+
+	return driver_names[type];
+}
 
-	if (initialized)
-	{
-		return path_pidfile;
-	}
+#	ifndef __ANDROID__
+#		ifdef XORG_USED
 
-	g_settings->getNoEx("pidfile", path_pidfile);
+static float calcDisplayDensity()
+{
+	const char *current_display = getenv("DISPLAY");
 
-	if (path_pidfile == "") {
-#ifdef RUN_IN_PLACE
-		path_pidfile = "pidfile.pid";
-#else
-		path_pidfile = "/var/run/minetest.pid";
-#endif
+	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;
+		}
 	}
-	initialized = true;
-	return path_pidfile;
+
+	/* return manually specified dpi */
+	return g_settings->getFloat("screen_dpi")/96.0;
 }
 
 
-void daemonize()
+float getDisplayDensity()
 {
-	std::string path_pidfile = get_pidfile_path();
+	static float cached_display_density = calcDisplayDensity();
+	return cached_display_density;
+}
 
-	FILE* pidfile = fopen(path_pidfile.c_str(),"r");
 
-	if (pidfile) {
-		int pid = 0;
-		if (fscanf(pidfile, "%i", &pid) == 1) {
-			if (kill(pid, 0) == 0) {
-				errorstream <<
-						"Minetestserver is already running with pid: "
-						<< pid << std::endl;
-				exit(-1);
-			}
-		} else {
-			errorstream << "Pidfile \"" << path_pidfile << "\" "
-					"already exists but content is invalid" << std::endl <<
-					"Delete it manually if you're sure minetest isn't running!"
-					<< std::endl;
-			exit(-1);
-		}
-		fclose(pidfile);
-		pidfile = 0;
-	}
+#		else // XORG_USED
+float getDisplayDensity()
+{
+	return g_settings->getFloat("screen_dpi")/96.0;
+}
+#		endif // XORG_USED
+
+v2u32 getDisplaySize()
+{
+	IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
 
-	pid_t pid = fork();
+	core::dimension2d<u32> deskres = nulldevice->getVideoModeList()->getDesktopResolution();
+	nulldevice -> drop();
 
-	if (pid > 0) {
-		pidfile = fopen(path_pidfile.c_str(),"w+");
-		if (pidfile) {
-			fprintf(pidfile,"%i",pid);
-			fclose(pidfile);
-		} else {
-			errorstream << "Failed to create pidfile: \"" << path_pidfile
-					<< "\""<< std::endl;
-		}
-		exit (0);
-	} else if (pid == 0) {
-		fclose(stdout);
-		fclose(stderr);
-		return;
-	}
+	return deskres;
+}
+#	endif // __ANDROID__
+#endif // SERVER
+
+
+////
+//// OS-specific Secure Random
+////
+
+#ifdef WIN32
+
+bool secure_rand_fill_buf(void *buf, size_t len)
+{
+	HCRYPTPROV wctx;
+
+	if (!CryptAcquireContext(&wctx, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
+		return false;
 
-	errorstream << "Failed to daemonize minetest, exiting" << std::endl;
-	exit(-1);
+	CryptGenRandom(wctx, len, (BYTE *)buf);
+	CryptReleaseContext(wctx, 0);
+	return true;
 }
 
-void cleanup_pid()
+#else
+
+bool secure_rand_fill_buf(void *buf, size_t len)
 {
-	unlink(get_pidfile_path().c_str());
+	// 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;
+
+	bool success = fread(buf, len, 1, fp) == 1;
+
+	fclose(fp);
+	return success;
 }
-#endif
+
 #endif
 
 } //namespace porting
-