index : minetest.git	gpcf lifo-fixes release
	modified minetest for gpcfs purposes	gpcf

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path: root/cmake/Modules

	Commit message (Collapse)	Author	Age
*	build with ogles2 driver	proller	2013-03-16
|
*	fix link if system json lib exists	proller	2013-03-05
|
*	new auto masterserver	proller	2013-02-22
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*	Prefer shared cURL library instead of the static one.	Ilya Zhuravlev	2012-12-21
|
*	Tweak CMake files for cURL	sfan5	2012-12-18
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*	Added ability to fetch media from remote server (using cURL library)	Ilya Zhuravlev	2012-12-16
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*	Add OGG_INCLUDE_DIR to SOUND_INCLUDE_DIRS	Perttu Ahola	2012-03-25
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*	celeron55's sound system initial framework	Perttu Ahola	2012-03-24
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*	Flatten share/ and user/ in the source and for the RUN_IN_PLACE build	Perttu Ahola	2012-03-20
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*	Gettext fix for *BSD - require special linkage as glibc is not used	q66	2011-08-11
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*	Locale dir should be parallel to global data dir	Giuseppe Bilotta	2011-07-24
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*	Bring po update out of cmake again	Giuseppe Bilotta	2011-07-24
| | | | | | | | | | | | | |	This solves two issues at once: * CMake would delete po files during ‘make clean’ because it thought they were autogenerated and not just managed * the only gettext tools readily available in Windows are so old they don't support options like --package-name The change also moves minetest.pot down one level, so we don't need to special case ‘en’ anymore. The downside is of course that you need some sane POSIX shell to update the po files.
*	updated cmakerules to autodetect if gettext can be used	Constantin Wenger	2011-07-23
| | |	fixed error if gettext is disabled
*	updatepo cmake rule	Giuseppe Bilotta	2011-07-22
| | | | | | | | | |	Get rid of the system-specific updatelocales.sh and introduce an updatepo cmake rule. po files are also updated before creating the mo files, and we now keep the .pot file (in the po/en directory). To stabilize the po file creation, file contents are sorted by source filename. Update po files in the process.
*	Refactor mo creation/installation	Giuseppe Bilotta	2011-07-22
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*	fixed not finding dll for gettext in MSVC	Constantin Wenger	2011-07-21
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*	Find correct library for MSVC vs MingW in Winows	Giuseppe Bilotta	2011-07-21
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*	updated some path because the dlls are mostly under bin not lib	Constantin Wenger	2011-07-21
| | |	added explanation why libintl must not belinked under some oses
*	Refactor and clean up gettext management	Giuseppe Bilotta	2011-07-21
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*	Use system sqlite3/jthread libs if available	Giuseppe Bilotta	2011-07-20
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*	Added libIrrlicht.dll.a to searched library names for non-MSVC windows	Perttu Ahola	2011-05-17
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*	forgot some test code in...	Perttu Ahola	2011-02-16
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*	Hopefully fixed some of the errors in cmake's finding of irrlicht	Perttu Ahola	2011-02-16
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*	might work good on cmake+msvc now	Perttu Ahola	2011-02-15
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*	Hopefully fixed the problem of IRRLICHT_SOURCE_DIR being not considered when ↵	Perttu Ahola	2011-02-01
| | | |	a local version of irrlicht is found.
*	Mainly small build system fixes	Perttu Ahola	2011-01-09
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*	CMake stuff works now on linux and windows... and should be possible to make ↵	Perttu Ahola	2011-01-08
| | | |	to work on OS X.
*	CMake working on Linux (not on windows)	Perttu Ahola	2011-01-08
	--HG-- rename : Makefile => Makefile.bak

generated by cgit v1.2.3 (git 2.39.1) at 2025-02-09 19:09:42 +0000

/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

/*
	Random portability stuff

	See comments in porting.h
*/

#include "porting.h"

#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>
	#include <shlwapi.h>
#endif
#if !defined(_WIN32)
	#include <unistd.h>
	#include <sys/utsname.h>
#endif
#if defined(__hpux)
	#define _PSTAT64
	#include <sys/pstat.h>
#endif

#include "config.h"
#include "debug.h"
#include "filesys.h"
#include "log.h"
#include "util/string.h"
#include "settings.h"
#include <list>
#include <cstdarg>
#include <cstdio>

namespace porting
{

/*
	Signal handler (grabs Ctrl-C on POSIX systems)
*/

bool g_killed = false;

bool *signal_handler_killstatus()
{
	return &g_killed;
}

#if !defined(_WIN32) // POSIX
	#include <signal.h>

void signal_handler(int sig)
{
	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 << "INFO: sigint_handler(): "
				<< "Printing debug stacks" << std::endl;
		debug_stacks_print();*/

		g_killed = true;
	} else {
		(void)signal(sig, SIG_DFL);
	}
}

void signal_handler_init(void)
{
	(void)signal(SIGINT, signal_handler);
	(void)signal(SIGTERM, signal_handler);
}

#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) {
			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);
		}
		break;
	case CTRL_BREAK_EVENT:
		break;
	}

	return TRUE;
}

void signal_handler_init(void)
{
	SetConsoleCtrlHandler((PHANDLER_ROUTINE)event_handler, TRUE);
}

#endif


/*
	Path mangler
*/

// 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)
{
	return path_share + DIR_DELIM + subpath;
}

void pathRemoveFile(char *path, char delim)
{
	// Remove filename and path delimiter
	int i;
	for(i = strlen(path)-1; i>=0; i--)
	{
		if(path[i] == delim)
			break;
	}
	path[i] = 0;
}

bool detectMSVCBuildDir(const std::string &path)
{
	const char *ends[] = {
		"bin\\Release",
		"bin\\MinSizeRel",
		"bin\\RelWithDebInfo",
		"bin\\Debug",
		"bin\\Build",
		NULL
	};
	return (!removeStringEnd(path, ends).empty());
}

std::string get_sysinfo()
{
#ifdef _WIN32

	std::ostringstream oss;
	LPSTR filePath = new char[MAX_PATH];
	UINT blockSize;
	VS_FIXEDFILEINFO *fixedFileInfo;

	GetSystemDirectoryA(filePath, MAX_PATH);
	PathAppendA(filePath, "kernel32.dll");

	DWORD dwVersionSize = GetFileVersionInfoSizeA(filePath, NULL);
	LPBYTE lpVersionInfo = new BYTE[dwVersionSize];

	GetFileVersionInfoA(filePath, 0, dwVersionSize, lpVersionInfo);
	VerQueryValueA(lpVersionInfo, "\\", (LPVOID *)&fixedFileInfo, &blockSize);

	oss << "Windows/"
		<< HIWORD(fixedFileInfo->dwProductVersionMS) << '.' // Major
		<< LOWORD(fixedFileInfo->dwProductVersionMS) << '.' // Minor
		<< HIWORD(fixedFileInfo->dwProductVersionLS) << ' '; // Build

	#ifdef _WIN64
	oss << "x86_64";
	#else
	BOOL is64 = FALSE;
	if (IsWow64Process(GetCurrentProcess(), &is64) && is64)
		oss << "x86_64"; // 32-bit app on 64-bit OS
	else
		oss << "x86";
	#endif

	delete[] lpVersionInfo;
	delete[] filePath;

	return oss.str();
#else
	struct utsname osinfo;
	uname(&osinfo);
	return std::string(osinfo.sysname) + "/"
		+ osinfo.release + " " + osinfo.machine;
#endif
}


bool getCurrentWorkingDir(char *buf, size_t len)
{
#ifdef _WIN32
	DWORD ret = GetCurrentDirectory(len, buf);
	return (ret != 0) && (ret <= len);
#else
	return getcwd(buf, len);
#endif
}


bool getExecPathFromProcfs(char *buf, size_t buflen)
{
#ifndef _WIN32
	buflen--;

	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;

	buf[len] = '\0';
	return true;
#else
	return false;
#endif
}

//// Windows
#if defined(_WIN32)

bool getCurrentExecPath(char *buf, size_t len)
{
	DWORD written = GetModuleFileNameA(NULL, buf, len);
	if (written == 0 || written == len)
		return false;

	return true;
}


//// Linux
#elif defined(__linux__)

bool getCurrentExecPath(char *buf, size_t len)
{
	if (!getExecPathFromProcfs(buf, len))
		return false;

	return true;
}


//// 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, 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];

	mib[0] = CTL_KERN;
	mib[1] = KERN_PROC;
	mib[2] = KERN_PROC_PATHNAME;
	mib[3] = -1;

	if (sysctl(mib, 4, buf, &len, NULL, 0) == -1)
		return false;

	return true;
}


//// Solaris
#elif defined(__sun) || defined(sun)

bool getCurrentExecPath(char *buf, size_t len)
{
	const char *exec = getexecname();
	if (exec == NULL)
		return false;

	if (strlcpy(buf, exec, len) >= len)
		return false;

	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;
}

#endif


//// Non-Windows
#if !defined(_WIN32)

const char *getHomeOrFail()
{
	const char *home = getenv("HOME");
	// In rare cases the HOME environment variable may be unset
	FATAL_ERROR_IF(!home,
		"Required environment variable HOME is not set");
	return home;
}

#endif


//// Windows
#if defined(_WIN32)

bool setSystemPaths()
{
	char buf[BUFSIZ];

	// Find path of executable and set path_share relative to it
	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>"
	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__)

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.empty() && 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 "..");

#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")) {
			warningstream << "system-wide share not found at \""
					<< trypath << "\""<< std::endl;
			continue;
		}

		// Warn if was not the first alternative
		if (i != trylist.begin()) {
			warningstream << "system-wide share found at \""
					<< trypath << "\"" << std::endl;
		}

		path_share = trypath;
		break;
	}

#ifndef __ANDROID__
	path_user = std::string(getHomeOrFail()) + DIR_DELIM "."
		+ PROJECT_NAME;
#endif

	return true;
}


//// 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)) {
		path_share = std::string(path);
	} else {
		warningstream << "Could not determine bundle resource path" << std::endl;
	}
	CFRelease(resources_url);

	path_user = std::string(getHomeOrFail())
		+ "/Library/Application Support/"
		+ PROJECT_NAME;
	return true;
}


#else

bool setSystemPaths()
{
	path_share = STATIC_SHAREDIR;
	path_user  = std::string(getHomeOrFail()) + DIR_DELIM "."
		+ lowercase(PROJECT_NAME);
	return true;
}


#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()
{
#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;

#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
}

////
//// 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;

	CryptGenRandom(wctx, len, (BYTE *)buf);
	CryptReleaseContext(wctx, 0);
	return true;
}

#else

bool secure_rand_fill_buf(void *buf, size_t len)
{
	// 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

void attachOrCreateConsole()
{
#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;
	}
#endif
}

int mt_snprintf(char *buf, const size_t buf_size, const char *fmt, ...)
{
	// https://msdn.microsoft.com/en-us/library/bt7tawza.aspx
	//  Many of the MSVC / Windows printf-style functions do not support positional
	//  arguments (eg. "%1$s"). We just forward the call to vsnprintf for sane
	//  platforms, but defer to _vsprintf_p on MSVC / Windows.
	// https://github.com/FFmpeg/FFmpeg/blob/5ae9fa13f5ac640bec113120d540f70971aa635d/compat/msvcrt/snprintf.c#L46
	//  _vsprintf_p has to be shimmed with _vscprintf_p on -1 (for an example see
	//  above FFmpeg link).
	va_list args;
	va_start(args, fmt);
#ifndef _MSC_VER
	int c = vsnprintf(buf, buf_size, fmt, args);
#else  // _MSC_VER
	int c = _vsprintf_p(buf, buf_size, fmt, args);
	if (c == -1)
		c = _vscprintf_p(fmt, args);
#endif // _MSC_VER
	va_end(args);
	return c;
}

// Load performance counter frequency only once at startup
#ifdef _WIN32

inline double get_perf_freq()
{
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	return freq.QuadPart;
}

double perf_freq = get_perf_freq();

#endif

} //namespace porting