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hush3/src/util.cpp
Adam Weiss 8550bcfeca Buffer log messages and explicitly open logs 
Prevents stomping on debug logs in datadirs that are locked by other
instances and lost parameter interaction messages that can get wiped by
ShrinkDebugFile().

The log is now opened explicitly and all emitted messages are buffered
until this open occurs.  The version message and log cut have also been
moved to the earliest possible sensible location.
2017-03-03 10:57:23 -08:00

891 lines
27 KiB
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include "config/bitcoin-config.h"
#endif
#include "util.h"
#include "chainparamsbase.h"
#include "random.h"
#include "serialize.h"
#include "sync.h"
#include "utilstrencodings.h"
#include "utiltime.h"
#include <stdarg.h>
#if (defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__))
#include <pthread.h>
#include <pthread_np.h>
#endif
#ifndef WIN32
// for posix_fallocate
#ifdef __linux__
#ifdef _POSIX_C_SOURCE
#undef _POSIX_C_SOURCE
#endif
#define _POSIX_C_SOURCE 200112L
#endif // __linux__
#include <algorithm>
#include <fcntl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#else
#ifdef _MSC_VER
#pragma warning(disable:4786)
#pragma warning(disable:4804)
#pragma warning(disable:4805)
#pragma warning(disable:4717)
#endif
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0501
#ifdef _WIN32_IE
#undef _WIN32_IE
#endif
#define _WIN32_IE 0x0501
#define WIN32_LEAN_AND_MEAN 1
#ifndef NOMINMAX
#define NOMINMAX
#endif
#include <io.h> /* for _commit */
#include <shlobj.h>
#endif
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
#include <boost/algorithm/string/join.hpp>
#include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <boost/foreach.hpp>
#include <boost/program_options/detail/config_file.hpp>
#include <boost/program_options/parsers.hpp>
#include <boost/thread.hpp>
#include <openssl/crypto.h>
#include <openssl/conf.h>
// Work around clang compilation problem in Boost 1.46:
// /usr/include/boost/program_options/detail/config_file.hpp:163:17: error: call to function 'to_internal' that is neither visible in the template definition nor found by argument-dependent lookup
// See also: http://stackoverflow.com/questions/10020179/compilation-fail-in-boost-librairies-program-options
// http://clang.debian.net/status.php?version=3.0&key=CANNOT_FIND_FUNCTION
namespace boost {
namespace program_options {
std::string to_internal(const std::string&);
}
} // namespace boost
using namespace std;
map<string, string> mapArgs;
map<string, vector<string> > mapMultiArgs;
bool fDebug = false;
bool fPrintToConsole = false;
bool fPrintToDebugLog = true;
bool fDaemon = false;
bool fServer = false;
string strMiscWarning;
bool fLogTimestamps = DEFAULT_LOGTIMESTAMPS;
bool fLogTimeMicros = DEFAULT_LOGTIMEMICROS;
bool fLogIPs = DEFAULT_LOGIPS;
std::atomic<bool> fReopenDebugLog(false);
CTranslationInterface translationInterface;
/** Init OpenSSL library multithreading support */
static CCriticalSection** ppmutexOpenSSL;
void locking_callback(int mode, int i, const char* file, int line) NO_THREAD_SAFETY_ANALYSIS
{
if (mode & CRYPTO_LOCK) {
ENTER_CRITICAL_SECTION(*ppmutexOpenSSL[i]);
} else {
LEAVE_CRITICAL_SECTION(*ppmutexOpenSSL[i]);
}
}
// Init
class CInit
{
public:
CInit()
{
// Init OpenSSL library multithreading support
ppmutexOpenSSL = (CCriticalSection**)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(CCriticalSection*));
for (int i = 0; i < CRYPTO_num_locks(); i++)
ppmutexOpenSSL[i] = new CCriticalSection();
CRYPTO_set_locking_callback(locking_callback);
// OpenSSL can optionally load a config file which lists optional loadable modules and engines.
// We don't use them so we don't require the config. However some of our libs may call functions
// which attempt to load the config file, possibly resulting in an exit() or crash if it is missing
// or corrupt. Explicitly tell OpenSSL not to try to load the file. The result for our libs will be
// that the config appears to have been loaded and there are no modules/engines available.
OPENSSL_no_config();
}
~CInit()
{
// Shutdown OpenSSL library multithreading support
CRYPTO_set_locking_callback(NULL);
for (int i = 0; i < CRYPTO_num_locks(); i++)
delete ppmutexOpenSSL[i];
OPENSSL_free(ppmutexOpenSSL);
}
}
instance_of_cinit;
/**
* LogPrintf() has been broken a couple of times now
* by well-meaning people adding mutexes in the most straightforward way.
* It breaks because it may be called by global destructors during shutdown.
* Since the order of destruction of static/global objects is undefined,
* defining a mutex as a global object doesn't work (the mutex gets
* destroyed, and then some later destructor calls OutputDebugStringF,
* maybe indirectly, and you get a core dump at shutdown trying to lock
* the mutex).
*/
static boost::once_flag debugPrintInitFlag = BOOST_ONCE_INIT;
/**
* We use boost::call_once() to make sure mutexDebugLog and
* vMsgsBeforeOpenLog are initialized in a thread-safe manner.
*
* NOTE: fileout, mutexDebugLog and sometimes vMsgsBeforeOpenLog
* are leaked on exit. This is ugly, but will be cleaned up by
* the OS/libc. When the shutdown sequence is fully audited and
* tested, explicit destruction of these objects can be implemented.
*/
static FILE* fileout = NULL;
static boost::mutex* mutexDebugLog = NULL;
static list<string> *vMsgsBeforeOpenLog;
static int FileWriteStr(const std::string &str, FILE *fp)
{
return fwrite(str.data(), 1, str.size(), fp);
}
static void DebugPrintInit()
{
assert(mutexDebugLog == NULL);
mutexDebugLog = new boost::mutex();
vMsgsBeforeOpenLog = new list<string>;
}
void OpenDebugLog()
{
boost::call_once(&DebugPrintInit, debugPrintInitFlag);
boost::mutex::scoped_lock scoped_lock(*mutexDebugLog);
assert(fileout == NULL);
assert(vMsgsBeforeOpenLog);
boost::filesystem::path pathDebug = GetDataDir() / "debug.log";
fileout = fopen(pathDebug.string().c_str(), "a");
if (fileout) setbuf(fileout, NULL); // unbuffered
// dump buffered messages from before we opened the log
while (!vMsgsBeforeOpenLog->empty()) {
FileWriteStr(vMsgsBeforeOpenLog->front(), fileout);
vMsgsBeforeOpenLog->pop_front();
}
delete vMsgsBeforeOpenLog;
vMsgsBeforeOpenLog = NULL;
}
bool LogAcceptCategory(const char* category)
{
if (category != NULL)
{
if (!fDebug)
return false;
// Give each thread quick access to -debug settings.
// This helps prevent issues debugging global destructors,
// where mapMultiArgs might be deleted before another
// global destructor calls LogPrint()
static boost::thread_specific_ptr<set<string> > ptrCategory;
if (ptrCategory.get() == NULL)
{
const vector<string>& categories = mapMultiArgs["-debug"];
ptrCategory.reset(new set<string>(categories.begin(), categories.end()));
// thread_specific_ptr automatically deletes the set when the thread ends.
}
const set<string>& setCategories = *ptrCategory.get();
// if not debugging everything and not debugging specific category, LogPrint does nothing.
if (setCategories.count(string("")) == 0 &&
setCategories.count(string("1")) == 0 &&
setCategories.count(string(category)) == 0)
return false;
}
return true;
}
/**
* fStartedNewLine is a state variable held by the calling context that will
* suppress printing of the timestamp when multiple calls are made that don't
* end in a newline. Initialize it to true, and hold it, in the calling context.
*/
static std::string LogTimestampStr(const std::string &str, bool *fStartedNewLine)
{
string strStamped;
if (!fLogTimestamps)
return str;
if (*fStartedNewLine)
strStamped = DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()) + ' ' + str;
else
strStamped = str;
if (!str.empty() && str[str.size()-1] == '\n')
*fStartedNewLine = true;
else
*fStartedNewLine = false;
return strStamped;
}
int LogPrintStr(const std::string &str)
{
int ret = 0; // Returns total number of characters written
static bool fStartedNewLine = true;
if (fPrintToConsole)
{
// print to console
ret = fwrite(str.data(), 1, str.size(), stdout);
fflush(stdout);
}
else if (fPrintToDebugLog)
{
boost::call_once(&DebugPrintInit, debugPrintInitFlag);
boost::mutex::scoped_lock scoped_lock(*mutexDebugLog);
string strTimestamped = LogTimestampStr(str, &fStartedNewLine);
// buffer if we haven't opened the log yet
if (fileout == NULL) {
assert(vMsgsBeforeOpenLog);
ret = strTimestamped.length();
vMsgsBeforeOpenLog->push_back(strTimestamped);
}
else
{
// reopen the log file, if requested
if (fReopenDebugLog) {
fReopenDebugLog = false;
boost::filesystem::path pathDebug = GetDataDir() / "debug.log";
if (freopen(pathDebug.string().c_str(),"a",fileout) != NULL)
setbuf(fileout, NULL); // unbuffered
}
ret = FileWriteStr(strTimestamped, fileout);
}
}
return ret;
}
static void InterpretNegativeSetting(string name, map<string, string>& mapSettingsRet)
{
// interpret -nofoo as -foo=0 (and -nofoo=0 as -foo=1) as long as -foo not set
if (name.find("-no") == 0)
{
std::string positive("-");
positive.append(name.begin()+3, name.end());
if (mapSettingsRet.count(positive) == 0)
{
bool value = !GetBoolArg(name, false);
mapSettingsRet[positive] = (value ? "1" : "0");
}
}
}
void ParseParameters(int argc, const char* const argv[])
{
mapArgs.clear();
mapMultiArgs.clear();
for (int i = 1; i < argc; i++)
{
std::string str(argv[i]);
std::string strValue;
size_t is_index = str.find('=');
if (is_index != std::string::npos)
{
strValue = str.substr(is_index+1);
str = str.substr(0, is_index);
}
#ifdef WIN32
boost::to_lower(str);
if (boost::algorithm::starts_with(str, "/"))
str = "-" + str.substr(1);
#endif
if (str[0] != '-')
break;
// Interpret --foo as -foo.
// If both --foo and -foo are set, the last takes effect.
if (str.length() > 1 && str[1] == '-')
str = str.substr(1);
mapArgs[str] = strValue;
mapMultiArgs[str].push_back(strValue);
}
// New 0.6 features:
BOOST_FOREACH(const PAIRTYPE(string,string)& entry, mapArgs)
{
// interpret -nofoo as -foo=0 (and -nofoo=0 as -foo=1) as long as -foo not set
InterpretNegativeSetting(entry.first, mapArgs);
}
}
std::string GetArg(const std::string& strArg, const std::string& strDefault)
{
if (mapArgs.count(strArg))
return mapArgs[strArg];
return strDefault;
}
int64_t GetArg(const std::string& strArg, int64_t nDefault)
{
if (mapArgs.count(strArg))
return atoi64(mapArgs[strArg]);
return nDefault;
}
bool GetBoolArg(const std::string& strArg, bool fDefault)
{
if (mapArgs.count(strArg))
{
if (mapArgs[strArg].empty())
return true;
return (atoi(mapArgs[strArg]) != 0);
}
return fDefault;
}
bool SoftSetArg(const std::string& strArg, const std::string& strValue)
{
if (mapArgs.count(strArg))
return false;
mapArgs[strArg] = strValue;
return true;
}
bool SoftSetBoolArg(const std::string& strArg, bool fValue)
{
if (fValue)
return SoftSetArg(strArg, std::string("1"));
else
return SoftSetArg(strArg, std::string("0"));
}
static const int screenWidth = 79;
static const int optIndent = 2;
static const int msgIndent = 7;
std::string HelpMessageGroup(const std::string &message) {
return std::string(message) + std::string("\n\n");
}
std::string HelpMessageOpt(const std::string &option, const std::string &message) {
return std::string(optIndent,' ') + std::string(option) +
std::string("\n") + std::string(msgIndent,' ') +
FormatParagraph(message, screenWidth - msgIndent, msgIndent) +
std::string("\n\n");
}
static std::string FormatException(const std::exception* pex, const char* pszThread)
{
#ifdef WIN32
char pszModule[MAX_PATH] = "";
GetModuleFileNameA(NULL, pszModule, sizeof(pszModule));
#else
const char* pszModule = "Zcash";
#endif
if (pex)
return strprintf(
"EXCEPTION: %s \n%s \n%s in %s \n", typeid(*pex).name(), pex->what(), pszModule, pszThread);
else
return strprintf(
"UNKNOWN EXCEPTION \n%s in %s \n", pszModule, pszThread);
}
void PrintExceptionContinue(const std::exception* pex, const char* pszThread)
{
std::string message = FormatException(pex, pszThread);
LogPrintf("\n\n************************\n%s\n", message);
fprintf(stderr, "\n\n************************\n%s\n", message.c_str());
strMiscWarning = message;
}
boost::filesystem::path GetDefaultDataDir()
{
namespace fs = boost::filesystem;
// Windows < Vista: C:\Documents and Settings\Username\Application Data\Zcash
// Windows >= Vista: C:\Users\Username\AppData\Roaming\Zcash
// Mac: ~/Library/Application Support/Zcash
// Unix: ~/.zcash
#ifdef WIN32
// Windows
return GetSpecialFolderPath(CSIDL_APPDATA) / "Zcash";
#else
fs::path pathRet;
char* pszHome = getenv("HOME");
if (pszHome == NULL || strlen(pszHome) == 0)
pathRet = fs::path("/");
else
pathRet = fs::path(pszHome);
#ifdef MAC_OSX
// Mac
pathRet /= "Library/Application Support";
TryCreateDirectory(pathRet);
return pathRet / "Zcash";
#else
// Unix
return pathRet / ".zcash";
#endif
#endif
}
static boost::filesystem::path pathCached;
static boost::filesystem::path pathCachedNetSpecific;
static boost::filesystem::path zc_paramsPathCached;
static CCriticalSection csPathCached;
static boost::filesystem::path ZC_GetBaseParamsDir()
{
// Copied from GetDefaultDataDir and adapter for zcash params.
namespace fs = boost::filesystem;
// Windows < Vista: C:\Documents and Settings\Username\Application Data\ZcashParams
// Windows >= Vista: C:\Users\Username\AppData\Roaming\ZcashParams
// Mac: ~/Library/Application Support/ZcashParams
// Unix: ~/.zcash-params
#ifdef WIN32
// Windows
return GetSpecialFolderPath(CSIDL_APPDATA) / "ZcashParams";
#else
fs::path pathRet;
char* pszHome = getenv("HOME");
if (pszHome == NULL || strlen(pszHome) == 0)
pathRet = fs::path("/");
else
pathRet = fs::path(pszHome);
#ifdef MAC_OSX
// Mac
pathRet /= "Library/Application Support";
TryCreateDirectory(pathRet);
return pathRet / "ZcashParams";
#else
// Unix
return pathRet / ".zcash-params";
#endif
#endif
}
const boost::filesystem::path &ZC_GetParamsDir()
{
namespace fs = boost::filesystem;
LOCK(csPathCached); // Reuse the same lock as upstream.
fs::path &path = zc_paramsPathCached;
// This can be called during exceptions by LogPrintf(), so we cache the
// value so we don't have to do memory allocations after that.
if (!path.empty())
return path;
path = ZC_GetBaseParamsDir();
return path;
}
// Return the user specified export directory. Create directory if it doesn't exist.
// If user did not set option, return an empty path.
// If there is a filesystem problem, throw an exception.
const boost::filesystem::path GetExportDir()
{
namespace fs = boost::filesystem;
fs::path path;
if (mapArgs.count("-exportdir")) {
path = fs::system_complete(mapArgs["-exportdir"]);
if (fs::exists(path) && !fs::is_directory(path)) {
throw std::runtime_error(strprintf("The -exportdir '%s' already exists and is not a directory", path.string()));
}
if (!fs::exists(path) && !fs::create_directories(path)) {
throw std::runtime_error(strprintf("Failed to create directory at -exportdir '%s'", path.string()));
}
}
return path;
}
const boost::filesystem::path &GetDataDir(bool fNetSpecific)
{
namespace fs = boost::filesystem;
LOCK(csPathCached);
fs::path &path = fNetSpecific ? pathCachedNetSpecific : pathCached;
// This can be called during exceptions by LogPrintf(), so we cache the
// value so we don't have to do memory allocations after that.
if (!path.empty())
return path;
if (mapArgs.count("-datadir")) {
path = fs::system_complete(mapArgs["-datadir"]);
if (!fs::is_directory(path)) {
path = "";
return path;
}
} else {
path = GetDefaultDataDir();
}
if (fNetSpecific)
path /= BaseParams().DataDir();
fs::create_directories(path);
return path;
}
void ClearDatadirCache()
{
pathCached = boost::filesystem::path();
pathCachedNetSpecific = boost::filesystem::path();
}
boost::filesystem::path GetConfigFile()
{
boost::filesystem::path pathConfigFile(GetArg("-conf", "zcash.conf"));
if (!pathConfigFile.is_complete())
pathConfigFile = GetDataDir(false) / pathConfigFile;
return pathConfigFile;
}
void ReadConfigFile(map<string, string>& mapSettingsRet,
map<string, vector<string> >& mapMultiSettingsRet)
{
boost::filesystem::ifstream streamConfig(GetConfigFile());
if (!streamConfig.good())
throw missing_zcash_conf();
set<string> setOptions;
setOptions.insert("*");
for (boost::program_options::detail::config_file_iterator it(streamConfig, setOptions), end; it != end; ++it)
{
// Don't overwrite existing settings so command line settings override zcash.conf
string strKey = string("-") + it->string_key;
if (mapSettingsRet.count(strKey) == 0)
{
mapSettingsRet[strKey] = it->value[0];
// interpret nofoo=1 as foo=0 (and nofoo=0 as foo=1) as long as foo not set)
InterpretNegativeSetting(strKey, mapSettingsRet);
}
mapMultiSettingsRet[strKey].push_back(it->value[0]);
}
// If datadir is changed in .conf file:
ClearDatadirCache();
}
#ifndef WIN32
boost::filesystem::path GetPidFile()
{
boost::filesystem::path pathPidFile(GetArg("-pid", "zcashd.pid"));
if (!pathPidFile.is_complete()) pathPidFile = GetDataDir() / pathPidFile;
return pathPidFile;
}
void CreatePidFile(const boost::filesystem::path &path, pid_t pid)
{
FILE* file = fopen(path.string().c_str(), "w");
if (file)
{
fprintf(file, "%d\n", pid);
fclose(file);
}
}
#endif
bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest)
{
#ifdef WIN32
return MoveFileExA(src.string().c_str(), dest.string().c_str(),
MOVEFILE_REPLACE_EXISTING) != 0;
#else
int rc = std::rename(src.string().c_str(), dest.string().c_str());
return (rc == 0);
#endif /* WIN32 */
}
/**
* Ignores exceptions thrown by Boost's create_directory if the requested directory exists.
* Specifically handles case where path p exists, but it wasn't possible for the user to
* write to the parent directory.
*/
bool TryCreateDirectory(const boost::filesystem::path& p)
{
try
{
return boost::filesystem::create_directory(p);
} catch (const boost::filesystem::filesystem_error&) {
if (!boost::filesystem::exists(p) || !boost::filesystem::is_directory(p))
throw;
}
// create_directory didn't create the directory, it had to have existed already
return false;
}
void FileCommit(FILE *fileout)
{
fflush(fileout); // harmless if redundantly called
#ifdef WIN32
HANDLE hFile = (HANDLE)_get_osfhandle(_fileno(fileout));
FlushFileBuffers(hFile);
#else
#if defined(__linux__) || defined(__NetBSD__)
fdatasync(fileno(fileout));
#elif defined(__APPLE__) && defined(F_FULLFSYNC)
fcntl(fileno(fileout), F_FULLFSYNC, 0);
#else
fsync(fileno(fileout));
#endif
#endif
}
bool TruncateFile(FILE *file, unsigned int length) {
#if defined(WIN32)
return _chsize(_fileno(file), length) == 0;
#else
return ftruncate(fileno(file), length) == 0;
#endif
}
/**
* this function tries to raise the file descriptor limit to the requested number.
* It returns the actual file descriptor limit (which may be more or less than nMinFD)
*/
int RaiseFileDescriptorLimit(int nMinFD) {
#if defined(WIN32)
return 2048;
#else
struct rlimit limitFD;
if (getrlimit(RLIMIT_NOFILE, &limitFD) != -1) {
if (limitFD.rlim_cur < (rlim_t)nMinFD) {
limitFD.rlim_cur = nMinFD;
if (limitFD.rlim_cur > limitFD.rlim_max)
limitFD.rlim_cur = limitFD.rlim_max;
setrlimit(RLIMIT_NOFILE, &limitFD);
getrlimit(RLIMIT_NOFILE, &limitFD);
}
return limitFD.rlim_cur;
}
return nMinFD; // getrlimit failed, assume it's fine
#endif
}
/**
* this function tries to make a particular range of a file allocated (corresponding to disk space)
* it is advisory, and the range specified in the arguments will never contain live data
*/
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length) {
#if defined(WIN32)
// Windows-specific version
HANDLE hFile = (HANDLE)_get_osfhandle(_fileno(file));
LARGE_INTEGER nFileSize;
int64_t nEndPos = (int64_t)offset + length;
nFileSize.u.LowPart = nEndPos & 0xFFFFFFFF;
nFileSize.u.HighPart = nEndPos >> 32;
SetFilePointerEx(hFile, nFileSize, 0, FILE_BEGIN);
SetEndOfFile(hFile);
#elif defined(MAC_OSX)
// OSX specific version
fstore_t fst;
fst.fst_flags = F_ALLOCATECONTIG;
fst.fst_posmode = F_PEOFPOSMODE;
fst.fst_offset = 0;
fst.fst_length = (off_t)offset + length;
fst.fst_bytesalloc = 0;
if (fcntl(fileno(file), F_PREALLOCATE, &fst) == -1) {
fst.fst_flags = F_ALLOCATEALL;
fcntl(fileno(file), F_PREALLOCATE, &fst);
}
ftruncate(fileno(file), fst.fst_length);
#elif defined(__linux__)
// Version using posix_fallocate
off_t nEndPos = (off_t)offset + length;
posix_fallocate(fileno(file), 0, nEndPos);
#else
// Fallback version
// TODO: just write one byte per block
static const char buf[65536] = {};
fseek(file, offset, SEEK_SET);
while (length > 0) {
unsigned int now = 65536;
if (length < now)
now = length;
fwrite(buf, 1, now, file); // allowed to fail; this function is advisory anyway
length -= now;
}
#endif
}
void ShrinkDebugFile()
{
// Scroll debug.log if it's getting too big
boost::filesystem::path pathLog = GetDataDir() / "debug.log";
FILE* file = fopen(pathLog.string().c_str(), "r");
if (file && boost::filesystem::file_size(pathLog) > 10 * 1000000)
{
// Restart the file with some of the end
std::vector <char> vch(200000,0);
fseek(file, -((long)vch.size()), SEEK_END);
int nBytes = fread(begin_ptr(vch), 1, vch.size(), file);
fclose(file);
file = fopen(pathLog.string().c_str(), "w");
if (file)
{
fwrite(begin_ptr(vch), 1, nBytes, file);
fclose(file);
}
}
else if (file != NULL)
fclose(file);
}
#ifdef WIN32
boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate)
{
namespace fs = boost::filesystem;
char pszPath[MAX_PATH] = "";
if(SHGetSpecialFolderPathA(NULL, pszPath, nFolder, fCreate))
{
return fs::path(pszPath);
}
LogPrintf("SHGetSpecialFolderPathA() failed, could not obtain requested path.\n");
return fs::path("");
}
#endif
boost::filesystem::path GetTempPath() {
#if BOOST_FILESYSTEM_VERSION == 3
return boost::filesystem::temp_directory_path();
#else
// TODO: remove when we don't support filesystem v2 anymore
boost::filesystem::path path;
#ifdef WIN32
char pszPath[MAX_PATH] = "";
if (GetTempPathA(MAX_PATH, pszPath))
path = boost::filesystem::path(pszPath);
#else
path = boost::filesystem::path("/tmp");
#endif
if (path.empty() || !boost::filesystem::is_directory(path)) {
LogPrintf("GetTempPath(): failed to find temp path\n");
return boost::filesystem::path("");
}
return path;
#endif
}
void runCommand(const std::string& strCommand)
{
int nErr = ::system(strCommand.c_str());
if (nErr)
LogPrintf("runCommand error: system(%s) returned %d\n", strCommand, nErr);
}
void RenameThread(const char* name)
{
#if defined(PR_SET_NAME)
// Only the first 15 characters are used (16 - NUL terminator)
::prctl(PR_SET_NAME, name, 0, 0, 0);
#elif (defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__))
pthread_set_name_np(pthread_self(), name);
#elif defined(MAC_OSX)
pthread_setname_np(name);
#else
// Prevent warnings for unused parameters...
(void)name;
#endif
}
void SetupEnvironment()
{
// On most POSIX systems (e.g. Linux, but not BSD) the environment's locale
// may be invalid, in which case the "C" locale is used as fallback.
#if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
try {
std::locale(""); // Raises a runtime error if current locale is invalid
} catch (const std::runtime_error&) {
setenv("LC_ALL", "C", 1);
}
#endif
// The path locale is lazy initialized and to avoid deinitialization errors
// in multithreading environments, it is set explicitly by the main thread.
// A dummy locale is used to extract the internal default locale, used by
// boost::filesystem::path, which is then used to explicitly imbue the path.
std::locale loc = boost::filesystem::path::imbue(std::locale::classic());
boost::filesystem::path::imbue(loc);
}
void SetThreadPriority(int nPriority)
{
#ifdef WIN32
SetThreadPriority(GetCurrentThread(), nPriority);
#else // WIN32
#ifdef PRIO_THREAD
setpriority(PRIO_THREAD, 0, nPriority);
#else // PRIO_THREAD
setpriority(PRIO_PROCESS, 0, nPriority);
#endif // PRIO_THREAD
#endif // WIN32
}
std::string LicenseInfo()
{
return FormatParagraph(strprintf(_("Copyright (C) 2009-%i The Bitcoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
FormatParagraph(strprintf(_("Copyright (C) 2015-%i The Zcash Developers"), COPYRIGHT_YEAR)) + "\n" +
"\n" +
FormatParagraph(_("This is experimental software.")) + "\n" +
"\n" +
FormatParagraph(_("Distributed under the MIT software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.")) + "\n" +
"\n" +
FormatParagraph(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit <https://www.openssl.org/> and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard.")) +
"\n";
}
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