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595 lines
16 KiB
595 lines
16 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2012 The Bitcoin developers |
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// Distributed under the MIT/X11 software license, see the accompanying |
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// file license.txt or http://www.opensource.org/licenses/mit-license.php. |
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#ifndef BITCOIN_UTIL_H |
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#define BITCOIN_UTIL_H |
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#include "uint256.h" |
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#ifndef WIN32 |
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#else |
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typedef int pid_t; /* define for windows compatiblity */ |
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#endif |
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#include <map> |
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#include <vector> |
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#include <string> |
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#include <boost/thread.hpp> |
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#include <boost/filesystem.hpp> |
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#include <boost/filesystem/path.hpp> |
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#include <boost/date_time/gregorian/gregorian_types.hpp> |
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#include <boost/date_time/posix_time/posix_time_types.hpp> |
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#include <openssl/sha.h> |
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#include <openssl/ripemd.h> |
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#include "netbase.h" // for AddTimeData |
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typedef long long int64; |
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typedef unsigned long long uint64; |
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static const int64 COIN = 100000000; |
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static const int64 CENT = 1000000; |
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#define loop for (;;) |
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#define BEGIN(a) ((char*)&(a)) |
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#define END(a) ((char*)&((&(a))[1])) |
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#define UBEGIN(a) ((unsigned char*)&(a)) |
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#define UEND(a) ((unsigned char*)&((&(a))[1])) |
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#define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0])) |
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#define printf OutputDebugStringF |
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#ifdef snprintf |
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#undef snprintf |
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#endif |
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#define snprintf my_snprintf |
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#ifndef PRI64d |
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#if defined(_MSC_VER) || defined(__MSVCRT__) |
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#define PRI64d "I64d" |
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#define PRI64u "I64u" |
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#define PRI64x "I64x" |
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#else |
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#define PRI64d "lld" |
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#define PRI64u "llu" |
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#define PRI64x "llx" |
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#endif |
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#endif |
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// This is needed because the foreach macro can't get over the comma in pair<t1, t2> |
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#define PAIRTYPE(t1, t2) std::pair<t1, t2> |
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// Align by increasing pointer, must have extra space at end of buffer |
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template <size_t nBytes, typename T> |
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T* alignup(T* p) |
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{ |
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union |
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{ |
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T* ptr; |
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size_t n; |
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} u; |
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u.ptr = p; |
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u.n = (u.n + (nBytes-1)) & ~(nBytes-1); |
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return u.ptr; |
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} |
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#ifdef WIN32 |
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#define MSG_NOSIGNAL 0 |
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#define MSG_DONTWAIT 0 |
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#ifndef S_IRUSR |
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#define S_IRUSR 0400 |
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#define S_IWUSR 0200 |
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#endif |
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#define unlink _unlink |
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#else |
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#define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d) |
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#define strlwr(psz) to_lower(psz) |
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#define _strlwr(psz) to_lower(psz) |
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#define MAX_PATH 1024 |
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inline void Sleep(int64 n) |
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{ |
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/*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly. |
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So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/ |
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boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n)); |
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} |
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#endif |
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extern std::map<std::string, std::string> mapArgs; |
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extern std::map<std::string, std::vector<std::string> > mapMultiArgs; |
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extern bool fDebug; |
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extern bool fPrintToConsole; |
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extern bool fPrintToDebugger; |
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extern bool fRequestShutdown; |
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extern bool fShutdown; |
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extern bool fDaemon; |
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extern bool fServer; |
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extern bool fCommandLine; |
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extern std::string strMiscWarning; |
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extern bool fTestNet; |
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extern bool fNoListen; |
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extern bool fLogTimestamps; |
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void RandAddSeed(); |
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void RandAddSeedPerfmon(); |
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int OutputDebugStringF(const char* pszFormat, ...); |
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int my_snprintf(char* buffer, size_t limit, const char* format, ...); |
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/* It is not allowed to use va_start with a pass-by-reference argument. |
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(C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a |
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macro to keep similar semantics. |
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*/ |
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std::string real_strprintf(const std::string &format, int dummy, ...); |
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#define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__) |
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bool error(const char *format, ...); |
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void LogException(std::exception* pex, const char* pszThread); |
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void PrintException(std::exception* pex, const char* pszThread); |
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void PrintExceptionContinue(std::exception* pex, const char* pszThread); |
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void ParseString(const std::string& str, char c, std::vector<std::string>& v); |
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std::string FormatMoney(int64 n, bool fPlus=false); |
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bool ParseMoney(const std::string& str, int64& nRet); |
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bool ParseMoney(const char* pszIn, int64& nRet); |
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std::vector<unsigned char> ParseHex(const char* psz); |
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std::vector<unsigned char> ParseHex(const std::string& str); |
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bool IsHex(const std::string& str); |
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std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL); |
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std::string DecodeBase64(const std::string& str); |
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std::string EncodeBase64(const unsigned char* pch, size_t len); |
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std::string EncodeBase64(const std::string& str); |
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void ParseParameters(int argc, const char*const argv[]); |
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bool WildcardMatch(const char* psz, const char* mask); |
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bool WildcardMatch(const std::string& str, const std::string& mask); |
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void FileCommit(FILE *fileout); |
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int GetFilesize(FILE* file); |
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bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest); |
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boost::filesystem::path GetDefaultDataDir(); |
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const boost::filesystem::path &GetDataDir(bool fNetSpecific = true); |
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boost::filesystem::path GetConfigFile(); |
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boost::filesystem::path GetPidFile(); |
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void CreatePidFile(const boost::filesystem::path &path, pid_t pid); |
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void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet); |
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#ifdef WIN32 |
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boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true); |
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#endif |
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void ShrinkDebugFile(); |
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int GetRandInt(int nMax); |
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uint64 GetRand(uint64 nMax); |
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int64 GetTime(); |
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void SetMockTime(int64 nMockTimeIn); |
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int64 GetAdjustedTime(); |
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std::string FormatFullVersion(); |
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std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments); |
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void AddTimeData(const CNetAddr& ip, int64 nTime); |
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inline std::string i64tostr(int64 n) |
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{ |
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return strprintf("%"PRI64d, n); |
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} |
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inline std::string itostr(int n) |
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{ |
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return strprintf("%d", n); |
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} |
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inline int64 atoi64(const char* psz) |
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{ |
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#ifdef _MSC_VER |
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return _atoi64(psz); |
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#else |
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return strtoll(psz, NULL, 10); |
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#endif |
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} |
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inline int64 atoi64(const std::string& str) |
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{ |
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#ifdef _MSC_VER |
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return _atoi64(str.c_str()); |
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#else |
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return strtoll(str.c_str(), NULL, 10); |
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#endif |
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} |
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inline int atoi(const std::string& str) |
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{ |
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return atoi(str.c_str()); |
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} |
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inline int roundint(double d) |
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{ |
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return (int)(d > 0 ? d + 0.5 : d - 0.5); |
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} |
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inline int64 roundint64(double d) |
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{ |
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return (int64)(d > 0 ? d + 0.5 : d - 0.5); |
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} |
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inline int64 abs64(int64 n) |
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{ |
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return (n >= 0 ? n : -n); |
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} |
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template<typename T> |
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std::string HexStr(const T itbegin, const T itend, bool fSpaces=false) |
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{ |
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std::vector<char> rv; |
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static char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7', |
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'8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; |
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rv.reserve((itend-itbegin)*3); |
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for(T it = itbegin; it < itend; ++it) |
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{ |
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unsigned char val = (unsigned char)(*it); |
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if(fSpaces && it != itbegin) |
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rv.push_back(' '); |
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rv.push_back(hexmap[val>>4]); |
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rv.push_back(hexmap[val&15]); |
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} |
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return std::string(rv.begin(), rv.end()); |
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} |
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inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false) |
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{ |
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return HexStr(vch.begin(), vch.end(), fSpaces); |
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} |
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template<typename T> |
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void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true) |
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{ |
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printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str()); |
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} |
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inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true) |
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{ |
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printf(pszFormat, HexStr(vch, fSpaces).c_str()); |
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} |
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inline int64 GetPerformanceCounter() |
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{ |
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int64 nCounter = 0; |
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#ifdef WIN32 |
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QueryPerformanceCounter((LARGE_INTEGER*)&nCounter); |
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#else |
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timeval t; |
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gettimeofday(&t, NULL); |
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nCounter = t.tv_sec * 1000000 + t.tv_usec; |
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#endif |
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return nCounter; |
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} |
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inline int64 GetTimeMillis() |
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{ |
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return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) - |
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boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds(); |
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} |
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inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime) |
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{ |
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time_t n = nTime; |
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struct tm* ptmTime = gmtime(&n); |
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char pszTime[200]; |
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strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime); |
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return pszTime; |
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} |
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template<typename T> |
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void skipspaces(T& it) |
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{ |
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while (isspace(*it)) |
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++it; |
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} |
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inline bool IsSwitchChar(char c) |
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{ |
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#ifdef WIN32 |
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return c == '-' || c == '/'; |
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#else |
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return c == '-'; |
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#endif |
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} |
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/** |
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* Return string argument or default value |
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* |
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* @param strArg Argument to get (e.g. "-foo") |
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* @param default (e.g. "1") |
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* @return command-line argument or default value |
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*/ |
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std::string GetArg(const std::string& strArg, const std::string& strDefault); |
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/** |
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* Return integer argument or default value |
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* |
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* @param strArg Argument to get (e.g. "-foo") |
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* @param default (e.g. 1) |
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* @return command-line argument (0 if invalid number) or default value |
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*/ |
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int64 GetArg(const std::string& strArg, int64 nDefault); |
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/** |
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* Return boolean argument or default value |
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* |
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* @param strArg Argument to get (e.g. "-foo") |
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* @param default (true or false) |
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* @return command-line argument or default value |
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*/ |
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bool GetBoolArg(const std::string& strArg, bool fDefault=false); |
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/** |
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* Set an argument if it doesn't already have a value |
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* |
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* @param strArg Argument to set (e.g. "-foo") |
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* @param strValue Value (e.g. "1") |
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* @return true if argument gets set, false if it already had a value |
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*/ |
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bool SoftSetArg(const std::string& strArg, const std::string& strValue); |
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/** |
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* Set a boolean argument if it doesn't already have a value |
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* |
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* @param strArg Argument to set (e.g. "-foo") |
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* @param fValue Value (e.g. false) |
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* @return true if argument gets set, false if it already had a value |
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*/ |
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bool SoftSetBoolArg(const std::string& strArg, bool fValue); |
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// Randomize the stack to help protect against buffer overrun exploits |
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#define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \ |
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{ \ |
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static char nLoops; \ |
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if (nLoops <= 0) \ |
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nLoops = GetRand(20) + 1; \ |
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if (nLoops-- > 1) \ |
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{ \ |
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ThreadFn; \ |
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return; \ |
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} \ |
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} |
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template<typename T1> |
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inline uint256 Hash(const T1 pbegin, const T1 pend) |
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{ |
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static unsigned char pblank[1]; |
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uint256 hash1; |
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SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1); |
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uint256 hash2; |
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2); |
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return hash2; |
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} |
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template<typename T1, typename T2> |
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inline uint256 Hash(const T1 p1begin, const T1 p1end, |
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const T2 p2begin, const T2 p2end) |
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{ |
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static unsigned char pblank[1]; |
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uint256 hash1; |
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SHA256_CTX ctx; |
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SHA256_Init(&ctx); |
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SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0])); |
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SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0])); |
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SHA256_Final((unsigned char*)&hash1, &ctx); |
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uint256 hash2; |
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2); |
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return hash2; |
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} |
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template<typename T1, typename T2, typename T3> |
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inline uint256 Hash(const T1 p1begin, const T1 p1end, |
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const T2 p2begin, const T2 p2end, |
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const T3 p3begin, const T3 p3end) |
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{ |
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static unsigned char pblank[1]; |
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uint256 hash1; |
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SHA256_CTX ctx; |
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SHA256_Init(&ctx); |
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SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0])); |
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SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0])); |
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SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0])); |
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SHA256_Final((unsigned char*)&hash1, &ctx); |
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uint256 hash2; |
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2); |
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return hash2; |
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} |
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template<typename T> |
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uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION) |
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{ |
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// Most of the time is spent allocating and deallocating CDataStream's |
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// buffer. If this ever needs to be optimized further, make a CStaticStream |
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// class with its buffer on the stack. |
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CDataStream ss(nType, nVersion); |
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ss.reserve(10000); |
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ss << obj; |
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return Hash(ss.begin(), ss.end()); |
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} |
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inline uint160 Hash160(const std::vector<unsigned char>& vch) |
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{ |
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uint256 hash1; |
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SHA256(&vch[0], vch.size(), (unsigned char*)&hash1); |
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uint160 hash2; |
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RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2); |
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return hash2; |
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} |
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/** Median filter over a stream of values. |
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* Returns the median of the last N numbers |
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*/ |
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template <typename T> class CMedianFilter |
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{ |
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private: |
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std::vector<T> vValues; |
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std::vector<T> vSorted; |
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unsigned int nSize; |
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public: |
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CMedianFilter(unsigned int size, T initial_value): |
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nSize(size) |
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{ |
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vValues.reserve(size); |
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vValues.push_back(initial_value); |
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vSorted = vValues; |
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} |
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void input(T value) |
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{ |
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if(vValues.size() == nSize) |
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{ |
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vValues.erase(vValues.begin()); |
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} |
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vValues.push_back(value); |
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vSorted.resize(vValues.size()); |
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std::copy(vValues.begin(), vValues.end(), vSorted.begin()); |
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std::sort(vSorted.begin(), vSorted.end()); |
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} |
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T median() const |
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{ |
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int size = vSorted.size(); |
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assert(size>0); |
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if(size & 1) // Odd number of elements |
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{ |
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return vSorted[size/2]; |
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} |
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else // Even number of elements |
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{ |
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return (vSorted[size/2-1] + vSorted[size/2]) / 2; |
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} |
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} |
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int size() const |
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{ |
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return vValues.size(); |
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} |
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std::vector<T> sorted () const |
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{ |
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return vSorted; |
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} |
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}; |
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// Note: It turns out we might have been able to use boost::thread |
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// by using TerminateThread(boost::thread.native_handle(), 0); |
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#ifdef WIN32 |
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typedef HANDLE pthread_t; |
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inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false) |
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{ |
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DWORD nUnused = 0; |
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HANDLE hthread = |
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CreateThread( |
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NULL, // default security |
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0, // inherit stack size from parent |
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(LPTHREAD_START_ROUTINE)pfn, // function pointer |
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parg, // argument |
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0, // creation option, start immediately |
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&nUnused); // thread identifier |
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if (hthread == NULL) |
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{ |
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printf("Error: CreateThread() returned %d\n", GetLastError()); |
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return (pthread_t)0; |
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} |
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if (!fWantHandle) |
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{ |
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CloseHandle(hthread); |
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return (pthread_t)-1; |
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} |
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return hthread; |
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} |
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inline void SetThreadPriority(int nPriority) |
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{ |
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SetThreadPriority(GetCurrentThread(), nPriority); |
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} |
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#else |
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inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false) |
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{ |
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pthread_t hthread = 0; |
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int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg); |
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if (ret != 0) |
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{ |
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printf("Error: pthread_create() returned %d\n", ret); |
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return (pthread_t)0; |
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} |
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if (!fWantHandle) |
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{ |
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pthread_detach(hthread); |
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return (pthread_t)-1; |
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} |
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return hthread; |
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} |
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#define THREAD_PRIORITY_LOWEST PRIO_MAX |
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#define THREAD_PRIORITY_BELOW_NORMAL 2 |
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#define THREAD_PRIORITY_NORMAL 0 |
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#define THREAD_PRIORITY_ABOVE_NORMAL 0 |
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inline void SetThreadPriority(int nPriority) |
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{ |
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// It's unclear if it's even possible to change thread priorities on Linux, |
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// but we really and truly need it for the generation threads. |
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#ifdef PRIO_THREAD |
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setpriority(PRIO_THREAD, 0, nPriority); |
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#else |
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setpriority(PRIO_PROCESS, 0, nPriority); |
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#endif |
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} |
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inline void ExitThread(size_t nExitCode) |
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{ |
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pthread_exit((void*)nExitCode); |
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} |
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#endif |
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inline uint32_t ByteReverse(uint32_t value) |
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{ |
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value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8); |
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return (value<<16) | (value>>16); |
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} |
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#endif |
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