move back to original directory structure

1 files changed, 906 insertions, 0 deletions

diff --git a/src/util.cpp b/src/util.cpp
new file mode 100644
index 0000000000..6199109289
--- /dev/null
+++ b/src/util.cpp
@@ -0,0 +1,906 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+#include "headers.h"
+
+using namespace std;
+using namespace boost;
+
+map<string, string> mapArgs;
+map<string, vector<string> > mapMultiArgs;
+bool fDebug = false;
+bool fPrintToConsole = false;
+bool fPrintToDebugger = false;
+char pszSetDataDir[MAX_PATH] = "";
+bool fRequestShutdown = false;
+bool fShutdown = false;
+bool fDaemon = false;
+bool fServer = false;
+bool fCommandLine = false;
+string strMiscWarning;
+bool fTestNet = false;
+bool fNoListen = false;
+bool fLogTimestamps = false;
+
+
+
+
+// Workaround for "multiple definition of `_tls_used'"
+// http://svn.boost.org/trac/boost/ticket/4258
+extern "C" void tss_cleanup_implemented() { }
+
+
+
+
+
+// Init openssl library multithreading support
+static boost::interprocess::interprocess_mutex** ppmutexOpenSSL;
+void locking_callback(int mode, int i, const char* file, int line)
+{
+    if (mode & CRYPTO_LOCK)
+        ppmutexOpenSSL[i]->lock();
+    else
+        ppmutexOpenSSL[i]->unlock();
+}
+
+// Init
+class CInit
+{
+public:
+    CInit()
+    {
+        // Init openssl library multithreading support
+        ppmutexOpenSSL = (boost::interprocess::interprocess_mutex**)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(boost::interprocess::interprocess_mutex*));
+        for (int i = 0; i < CRYPTO_num_locks(); i++)
+            ppmutexOpenSSL[i] = new boost::interprocess::interprocess_mutex();
+        CRYPTO_set_locking_callback(locking_callback);
+
+#ifdef __WXMSW__
+        // Seed random number generator with screen scrape and other hardware sources
+        RAND_screen();
+#endif
+
+        // Seed random number generator with performance counter
+        RandAddSeed();
+    }
+    ~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;
+
+
+
+
+
+
+
+
+void RandAddSeed()
+{
+    // Seed with CPU performance counter
+    int64 nCounter = GetPerformanceCounter();
+    RAND_add(&nCounter, sizeof(nCounter), 1.5);
+    memset(&nCounter, 0, sizeof(nCounter));
+}
+
+void RandAddSeedPerfmon()
+{
+    RandAddSeed();
+
+    // This can take up to 2 seconds, so only do it every 10 minutes
+    static int64 nLastPerfmon;
+    if (GetTime() < nLastPerfmon + 10 * 60)
+        return;
+    nLastPerfmon = GetTime();
+
+#ifdef __WXMSW__
+    // Don't need this on Linux, OpenSSL automatically uses /dev/urandom
+    // Seed with the entire set of perfmon data
+    unsigned char pdata[250000];
+    memset(pdata, 0, sizeof(pdata));
+    unsigned long nSize = sizeof(pdata);
+    long ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, pdata, &nSize);
+    RegCloseKey(HKEY_PERFORMANCE_DATA);
+    if (ret == ERROR_SUCCESS)
+    {
+        RAND_add(pdata, nSize, nSize/100.0);
+        memset(pdata, 0, nSize);
+        printf("%s RandAddSeed() %d bytes\n", DateTimeStrFormat("%x %H:%M", GetTime()).c_str(), nSize);
+    }
+#endif
+}
+
+uint64 GetRand(uint64 nMax)
+{
+    if (nMax == 0)
+        return 0;
+
+    // The range of the random source must be a multiple of the modulus
+    // to give every possible output value an equal possibility
+    uint64 nRange = (UINT64_MAX / nMax) * nMax;
+    uint64 nRand = 0;
+    do
+        RAND_bytes((unsigned char*)&nRand, sizeof(nRand));
+    while (nRand >= nRange);
+    return (nRand % nMax);
+}
+
+int GetRandInt(int nMax)
+{
+    return GetRand(nMax);
+}
+
+
+
+
+
+
+
+
+
+
+
+inline int OutputDebugStringF(const char* pszFormat, ...)
+{
+    int ret = 0;
+    if (fPrintToConsole)
+    {
+        // print to console
+        va_list arg_ptr;
+        va_start(arg_ptr, pszFormat);
+        ret = vprintf(pszFormat, arg_ptr);
+        va_end(arg_ptr);
+    }
+    else
+    {
+        // print to debug.log
+        static FILE* fileout = NULL;
+
+        if (!fileout)
+        {
+            char pszFile[MAX_PATH+100];
+            GetDataDir(pszFile);
+            strlcat(pszFile, "/debug.log", sizeof(pszFile));
+            fileout = fopen(pszFile, "a");
+            if (fileout) setbuf(fileout, NULL); // unbuffered
+        }
+        if (fileout)
+        {
+            static bool fStartedNewLine = true;
+
+            // Debug print useful for profiling
+            if (fLogTimestamps && fStartedNewLine)
+                fprintf(fileout, "%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
+            if (pszFormat[strlen(pszFormat) - 1] == '\n')
+                fStartedNewLine = true;
+            else
+                fStartedNewLine = false;
+
+            va_list arg_ptr;
+            va_start(arg_ptr, pszFormat);
+            ret = vfprintf(fileout, pszFormat, arg_ptr);
+            va_end(arg_ptr);
+        }
+    }
+
+#ifdef __WXMSW__
+    if (fPrintToDebugger)
+    {
+        static CCriticalSection cs_OutputDebugStringF;
+
+        // accumulate a line at a time
+        CRITICAL_BLOCK(cs_OutputDebugStringF)
+        {
+            static char pszBuffer[50000];
+            static char* pend;
+            if (pend == NULL)
+                pend = pszBuffer;
+            va_list arg_ptr;
+            va_start(arg_ptr, pszFormat);
+            int limit = END(pszBuffer) - pend - 2;
+            int ret = _vsnprintf(pend, limit, pszFormat, arg_ptr);
+            va_end(arg_ptr);
+            if (ret < 0 || ret >= limit)
+            {
+                pend = END(pszBuffer) - 2;
+                *pend++ = '\n';
+            }
+            else
+                pend += ret;
+            *pend = '\0';
+            char* p1 = pszBuffer;
+            char* p2;
+            while (p2 = strchr(p1, '\n'))
+            {
+                p2++;
+                char c = *p2;
+                *p2 = '\0';
+                OutputDebugStringA(p1);
+                *p2 = c;
+                p1 = p2;
+            }
+            if (p1 != pszBuffer)
+                memmove(pszBuffer, p1, pend - p1 + 1);
+            pend -= (p1 - pszBuffer);
+        }
+    }
+#endif
+    return ret;
+}
+
+
+// Safer snprintf
+//  - prints up to limit-1 characters
+//  - output string is always null terminated even if limit reached
+//  - return value is the number of characters actually printed
+int my_snprintf(char* buffer, size_t limit, const char* format, ...)
+{
+    if (limit == 0)
+        return 0;
+    va_list arg_ptr;
+    va_start(arg_ptr, format);
+    int ret = _vsnprintf(buffer, limit, format, arg_ptr);
+    va_end(arg_ptr);
+    if (ret < 0 || ret >= limit)
+    {
+        ret = limit - 1;
+        buffer[limit-1] = 0;
+    }
+    return ret;
+}
+
+
+string strprintf(const char* format, ...)
+{
+    char buffer[50000];
+    char* p = buffer;
+    int limit = sizeof(buffer);
+    int ret;
+    loop
+    {
+        va_list arg_ptr;
+        va_start(arg_ptr, format);
+        ret = _vsnprintf(p, limit, format, arg_ptr);
+        va_end(arg_ptr);
+        if (ret >= 0 && ret < limit)
+            break;
+        if (p != buffer)
+            delete[] p;
+        limit *= 2;
+        p = new char[limit];
+        if (p == NULL)
+            throw std::bad_alloc();
+    }
+    string str(p, p+ret);
+    if (p != buffer)
+        delete[] p;
+    return str;
+}
+
+
+bool error(const char* format, ...)
+{
+    char buffer[50000];
+    int limit = sizeof(buffer);
+    va_list arg_ptr;
+    va_start(arg_ptr, format);
+    int ret = _vsnprintf(buffer, limit, format, arg_ptr);
+    va_end(arg_ptr);
+    if (ret < 0 || ret >= limit)
+    {
+        ret = limit - 1;
+        buffer[limit-1] = 0;
+    }
+    printf("ERROR: %s\n", buffer);
+    return false;
+}
+
+
+void ParseString(const string& str, char c, vector<string>& v)
+{
+    if (str.empty())
+        return;
+    string::size_type i1 = 0;
+    string::size_type i2;
+    loop
+    {
+        i2 = str.find(c, i1);
+        if (i2 == str.npos)
+        {
+            v.push_back(str.substr(i1));
+            return;
+        }
+        v.push_back(str.substr(i1, i2-i1));
+        i1 = i2+1;
+    }
+}
+
+
+string FormatMoney(int64 n, bool fPlus)
+{
+    // Note: not using straight sprintf here because we do NOT want
+    // localized number formatting.
+    int64 n_abs = (n > 0 ? n : -n);
+    int64 quotient = n_abs/COIN;
+    int64 remainder = n_abs%COIN;
+    string str = strprintf("%"PRI64d".%08"PRI64d, quotient, remainder);
+
+    // Right-trim excess 0's before the decimal point:
+    int nTrim = 0;
+    for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
+        ++nTrim;
+    if (nTrim)
+        str.erase(str.size()-nTrim, nTrim);
+
+    // Insert thousands-separators:
+    size_t point = str.find(".");
+    for (int i = (str.size()-point)+3; i < str.size(); i += 4)
+        if (isdigit(str[str.size() - i - 1]))
+            str.insert(str.size() - i, 1, ',');
+    if (n < 0)
+        str.insert((unsigned int)0, 1, '-');
+    else if (fPlus && n > 0)
+        str.insert((unsigned int)0, 1, '+');
+    return str;
+}
+
+
+bool ParseMoney(const string& str, int64& nRet)
+{
+    return ParseMoney(str.c_str(), nRet);
+}
+
+bool ParseMoney(const char* pszIn, int64& nRet)
+{
+    string strWhole;
+    int64 nUnits = 0;
+    const char* p = pszIn;
+    while (isspace(*p))
+        p++;
+    for (; *p; p++)
+    {
+        if (*p == ',' && p > pszIn && isdigit(p[-1]) && isdigit(p[1]) && isdigit(p[2]) && isdigit(p[3]) && !isdigit(p[4]))
+            continue;
+        if (*p == '.')
+        {
+            p++;
+            int64 nMult = CENT*10;
+            while (isdigit(*p) && (nMult > 0))
+            {
+                nUnits += nMult * (*p++ - '0');
+                nMult /= 10;
+            }
+            break;
+        }
+        if (isspace(*p))
+            break;
+        if (!isdigit(*p))
+            return false;
+        strWhole.insert(strWhole.end(), *p);
+    }
+    for (; *p; p++)
+        if (!isspace(*p))
+            return false;
+    if (strWhole.size() > 14)
+        return false;
+    if (nUnits < 0 || nUnits > COIN)
+        return false;
+    int64 nWhole = atoi64(strWhole);
+    int64 nValue = nWhole*COIN + nUnits;
+
+    nRet = nValue;
+    return true;
+}
+
+
+vector<unsigned char> ParseHex(const char* psz)
+{
+    static char phexdigit[256] =
+    { -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      0,1,2,3,4,5,6,7,8,9,-1,-1,-1,-1,-1,-1,
+      -1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+      -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, };
+
+    // convert hex dump to vector
+    vector<unsigned char> vch;
+    loop
+    {
+        while (isspace(*psz))
+            psz++;
+        char c = phexdigit[(unsigned char)*psz++];
+        if (c == (char)-1)
+            break;
+        unsigned char n = (c << 4);
+        c = phexdigit[(unsigned char)*psz++];
+        if (c == (char)-1)
+            break;
+        n |= c;
+        vch.push_back(n);
+    }
+    return vch;
+}
+
+vector<unsigned char> ParseHex(const string& str)
+{
+    return ParseHex(str.c_str());
+}
+
+
+void ParseParameters(int argc, char* argv[])
+{
+    mapArgs.clear();
+    mapMultiArgs.clear();
+    for (int i = 1; i < argc; i++)
+    {
+        char psz[10000];
+        strlcpy(psz, argv[i], sizeof(psz));
+        char* pszValue = (char*)"";
+        if (strchr(psz, '='))
+        {
+            pszValue = strchr(psz, '=');
+            *pszValue++ = '\0';
+        }
+        #ifdef __WXMSW__
+        _strlwr(psz);
+        if (psz[0] == '/')
+            psz[0] = '-';
+        #endif
+        if (psz[0] != '-')
+            break;
+        mapArgs[psz] = pszValue;
+        mapMultiArgs[psz].push_back(pszValue);
+    }
+}
+
+
+const char* wxGetTranslation(const char* pszEnglish)
+{
+#ifdef GUI
+    // Wrapper of wxGetTranslation returning the same const char* type as was passed in
+    static CCriticalSection cs;
+    CRITICAL_BLOCK(cs)
+    {
+        // Look in cache
+        static map<string, char*> mapCache;
+        map<string, char*>::iterator mi = mapCache.find(pszEnglish);
+        if (mi != mapCache.end())
+            return (*mi).second;
+
+        // wxWidgets translation
+        wxString strTranslated = wxGetTranslation(wxString(pszEnglish, wxConvUTF8));
+
+        // We don't cache unknown strings because caller might be passing in a
+        // dynamic string and we would keep allocating memory for each variation.
+        if (strcmp(pszEnglish, strTranslated.utf8_str()) == 0)
+            return pszEnglish;
+
+        // Add to cache, memory doesn't need to be freed.  We only cache because
+        // we must pass back a pointer to permanently allocated memory.
+        char* pszCached = new char[strlen(strTranslated.utf8_str())+1];
+        strcpy(pszCached, strTranslated.utf8_str());
+        mapCache[pszEnglish] = pszCached;
+        return pszCached;
+    }
+    return NULL;
+#else
+    return pszEnglish;
+#endif
+}
+
+
+bool WildcardMatch(const char* psz, const char* mask)
+{
+    loop
+    {
+        switch (*mask)
+        {
+        case '\0':
+            return (*psz == '\0');
+        case '*':
+            return WildcardMatch(psz, mask+1) || (*psz && WildcardMatch(psz+1, mask));
+        case '?':
+            if (*psz == '\0')
+                return false;
+            break;
+        default:
+            if (*psz != *mask)
+                return false;
+            break;
+        }
+        psz++;
+        mask++;
+    }
+}
+
+bool WildcardMatch(const string& str, const string& mask)
+{
+    return WildcardMatch(str.c_str(), mask.c_str());
+}
+
+
+
+
+
+
+
+
+void FormatException(char* pszMessage, std::exception* pex, const char* pszThread)
+{
+#ifdef __WXMSW__
+    char pszModule[MAX_PATH];
+    pszModule[0] = '\0';
+    GetModuleFileNameA(NULL, pszModule, sizeof(pszModule));
+#else
+    const char* pszModule = "bitcoin";
+#endif
+    if (pex)
+        snprintf(pszMessage, 1000,
+            "EXCEPTION: %s       \n%s       \n%s in %s       \n", typeid(*pex).name(), pex->what(), pszModule, pszThread);
+    else
+        snprintf(pszMessage, 1000,
+            "UNKNOWN EXCEPTION       \n%s in %s       \n", pszModule, pszThread);
+}
+
+void LogException(std::exception* pex, const char* pszThread)
+{
+    char pszMessage[10000];
+    FormatException(pszMessage, pex, pszThread);
+    printf("\n%s", pszMessage);
+}
+
+void PrintException(std::exception* pex, const char* pszThread)
+{
+    char pszMessage[10000];
+    FormatException(pszMessage, pex, pszThread);
+    printf("\n\n************************\n%s\n", pszMessage);
+    fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
+    strMiscWarning = pszMessage;
+#ifdef GUI
+    if (wxTheApp && !fDaemon)
+        MyMessageBox(pszMessage, "Bitcoin", wxOK | wxICON_ERROR);
+#endif
+    throw;
+}
+
+void ThreadOneMessageBox(string strMessage)
+{
+    // Skip message boxes if one is already open
+    static bool fMessageBoxOpen;
+    if (fMessageBoxOpen)
+        return;
+    fMessageBoxOpen = true;
+    ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
+    fMessageBoxOpen = false;
+}
+
+void PrintExceptionContinue(std::exception* pex, const char* pszThread)
+{
+    char pszMessage[10000];
+    FormatException(pszMessage, pex, pszThread);
+    printf("\n\n************************\n%s\n", pszMessage);
+    fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
+    strMiscWarning = pszMessage;
+#ifdef GUI
+    if (wxTheApp && !fDaemon)
+        boost::thread(boost::bind(ThreadOneMessageBox, string(pszMessage)));
+#endif
+}
+
+
+
+
+
+
+
+
+#ifdef __WXMSW__
+typedef WINSHELLAPI BOOL (WINAPI *PSHGETSPECIALFOLDERPATHA)(HWND hwndOwner, LPSTR lpszPath, int nFolder, BOOL fCreate);
+
+string MyGetSpecialFolderPath(int nFolder, bool fCreate)
+{
+    char pszPath[MAX_PATH+100] = "";
+
+    // SHGetSpecialFolderPath isn't always available on old Windows versions
+    HMODULE hShell32 = LoadLibraryA("shell32.dll");
+    if (hShell32)
+    {
+        PSHGETSPECIALFOLDERPATHA pSHGetSpecialFolderPath =
+            (PSHGETSPECIALFOLDERPATHA)GetProcAddress(hShell32, "SHGetSpecialFolderPathA");
+        if (pSHGetSpecialFolderPath)
+            (*pSHGetSpecialFolderPath)(NULL, pszPath, nFolder, fCreate);
+        FreeModule(hShell32);
+    }
+
+    // Backup option
+    if (pszPath[0] == '\0')
+    {
+        if (nFolder == CSIDL_STARTUP)
+        {
+            strcpy(pszPath, getenv("USERPROFILE"));
+            strcat(pszPath, "\\Start Menu\\Programs\\Startup");
+        }
+        else if (nFolder == CSIDL_APPDATA)
+        {
+            strcpy(pszPath, getenv("APPDATA"));
+        }
+    }
+
+    return pszPath;
+}
+#endif
+
+string GetDefaultDataDir()
+{
+    // Windows: C:\Documents and Settings\username\Application Data\Bitcoin
+    // Mac: ~/Library/Application Support/Bitcoin
+    // Unix: ~/.bitcoin
+#ifdef __WXMSW__
+    // Windows
+    return MyGetSpecialFolderPath(CSIDL_APPDATA, true) + "\\Bitcoin";
+#else
+    char* pszHome = getenv("HOME");
+    if (pszHome == NULL || strlen(pszHome) == 0)
+        pszHome = (char*)"/";
+    string strHome = pszHome;
+    if (strHome[strHome.size()-1] != '/')
+        strHome += '/';
+#ifdef __WXMAC_OSX__
+    // Mac
+    strHome += "Library/Application Support/";
+    filesystem::create_directory(strHome.c_str());
+    return strHome + "Bitcoin";
+#else
+    // Unix
+    return strHome + ".bitcoin";
+#endif
+#endif
+}
+
+void GetDataDir(char* pszDir)
+{
+    // pszDir must be at least MAX_PATH length.
+    int nVariation;
+    if (pszSetDataDir[0] != 0)
+    {
+        strlcpy(pszDir, pszSetDataDir, MAX_PATH);
+        nVariation = 0;
+    }
+    else
+    {
+        // This can be called during exceptions by printf, so we cache the
+        // value so we don't have to do memory allocations after that.
+        static char pszCachedDir[MAX_PATH];
+        if (pszCachedDir[0] == 0)
+            strlcpy(pszCachedDir, GetDefaultDataDir().c_str(), sizeof(pszCachedDir));
+        strlcpy(pszDir, pszCachedDir, MAX_PATH);
+        nVariation = 1;
+    }
+    if (fTestNet)
+    {
+        char* p = pszDir + strlen(pszDir);
+        if (p > pszDir && p[-1] != '/' && p[-1] != '\\')
+            *p++ = '/';
+        strcpy(p, "testnet");
+        nVariation += 2;
+    }
+    static bool pfMkdir[4];
+    if (!pfMkdir[nVariation])
+    {
+        pfMkdir[nVariation] = true;
+        boost::filesystem::create_directory(pszDir);
+    }
+}
+
+string GetDataDir()
+{
+    char pszDir[MAX_PATH];
+    GetDataDir(pszDir);
+    return pszDir;
+}
+
+string GetConfigFile()
+{
+    namespace fs = boost::filesystem;
+    fs::path pathConfig(GetArg("-conf", "bitcoin.conf"));
+    if (!pathConfig.is_complete())
+        pathConfig = fs::path(GetDataDir()) / pathConfig;
+    return pathConfig.string();
+}
+
+void ReadConfigFile(map<string, string>& mapSettingsRet,
+                    map<string, vector<string> >& mapMultiSettingsRet)
+{
+    namespace fs = boost::filesystem;
+    namespace pod = boost::program_options::detail;
+
+    fs::ifstream streamConfig(GetConfigFile());
+    if (!streamConfig.good())
+        return;
+
+    set<string> setOptions;
+    setOptions.insert("*");
+    
+    for (pod::config_file_iterator it(streamConfig, setOptions), end; it != end; ++it)
+    {
+        // Don't overwrite existing settings so command line settings override bitcoin.conf
+        string strKey = string("-") + it->string_key;
+        if (mapSettingsRet.count(strKey) == 0)
+            mapSettingsRet[strKey] = it->value[0];
+        mapMultiSettingsRet[strKey].push_back(it->value[0]);
+    }
+}
+
+string GetPidFile()
+{
+    namespace fs = boost::filesystem;
+    fs::path pathConfig(GetArg("-pid", "bitcoind.pid"));
+    if (!pathConfig.is_complete())
+        pathConfig = fs::path(GetDataDir()) / pathConfig;
+    return pathConfig.string();
+}
+
+void CreatePidFile(string pidFile, pid_t pid)
+{
+    FILE* file;
+    if (file = fopen(pidFile.c_str(), "w"))
+    {
+        fprintf(file, "%d\n", pid);
+        fclose(file);
+    }
+}
+
+int GetFilesize(FILE* file)
+{
+    int nSavePos = ftell(file);
+    int nFilesize = -1;
+    if (fseek(file, 0, SEEK_END) == 0)
+        nFilesize = ftell(file);
+    fseek(file, nSavePos, SEEK_SET);
+    return nFilesize;
+}
+
+void ShrinkDebugFile()
+{
+    // Scroll debug.log if it's getting too big
+    string strFile = GetDataDir() + "/debug.log";
+    FILE* file = fopen(strFile.c_str(), "r");
+    if (file && GetFilesize(file) > 10 * 1000000)
+    {
+        // Restart the file with some of the end
+        char pch[200000];
+        fseek(file, -sizeof(pch), SEEK_END);
+        int nBytes = fread(pch, 1, sizeof(pch), file);
+        fclose(file);
+        if (file = fopen(strFile.c_str(), "w"))
+        {
+            fwrite(pch, 1, nBytes, file);
+            fclose(file);
+        }
+    }
+}
+
+
+
+
+
+
+
+
+//
+// "Never go to sea with two chronometers; take one or three."
+// Our three time sources are:
+//  - System clock
+//  - Median of other nodes's clocks
+//  - The user (asking the user to fix the system clock if the first two disagree)
+//
+int64 GetTime()
+{
+    return time(NULL);
+}
+
+static int64 nTimeOffset = 0;
+
+int64 GetAdjustedTime()
+{
+    return GetTime() + nTimeOffset;
+}
+
+void AddTimeData(unsigned int ip, int64 nTime)
+{
+    int64 nOffsetSample = nTime - GetTime();
+
+    // Ignore duplicates
+    static set<unsigned int> setKnown;
+    if (!setKnown.insert(ip).second)
+        return;
+
+    // Add data
+    static vector<int64> vTimeOffsets;
+    if (vTimeOffsets.empty())
+        vTimeOffsets.push_back(0);
+    vTimeOffsets.push_back(nOffsetSample);
+    printf("Added time data, samples %d, offset %+"PRI64d" (%+"PRI64d" minutes)\n", vTimeOffsets.size(), vTimeOffsets.back(), vTimeOffsets.back()/60);
+    if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
+    {
+        sort(vTimeOffsets.begin(), vTimeOffsets.end());
+        int64 nMedian = vTimeOffsets[vTimeOffsets.size()/2];
+        // Only let other nodes change our time by so much
+        if (abs64(nMedian) < 70 * 60)
+        {
+            nTimeOffset = nMedian;
+        }
+        else
+        {
+            nTimeOffset = 0;
+
+            static bool fDone;
+            if (!fDone)
+            {
+                // If nobody has a time different than ours but within 5 minutes of ours, give a warning
+                bool fMatch = false;
+                BOOST_FOREACH(int64 nOffset, vTimeOffsets)
+                    if (nOffset != 0 && abs64(nOffset) < 5 * 60)
+                        fMatch = true;
+
+                if (!fMatch)
+                {
+                    fDone = true;
+                    string strMessage = _("Warning: Please check that your computer's date and time are correct.  If your clock is wrong Bitcoin will not work properly.");
+                    strMiscWarning = strMessage;
+                    printf("*** %s\n", strMessage.c_str());
+                    boost::thread(boost::bind(ThreadSafeMessageBox, strMessage+" ", string("Bitcoin"), wxOK | wxICON_EXCLAMATION, (wxWindow*)NULL, -1, -1));
+                }
+            }
+        }
+        BOOST_FOREACH(int64 n, vTimeOffsets)
+            printf("%+"PRI64d"  ", n);
+        printf("|  nTimeOffset = %+"PRI64d"  (%+"PRI64d" minutes)\n", nTimeOffset, nTimeOffset/60);
+    }
+}
+
+
+
+
+
+
+
+
+
+string FormatVersion(int nVersion)
+{
+    if (nVersion%100 == 0)
+        return strprintf("%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100);
+    else
+        return strprintf("%d.%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100, nVersion%100);
+}
+
+string FormatFullVersion()
+{
+    string s = FormatVersion(VERSION) + pszSubVer;
+    if (VERSION_IS_BETA)
+        s += _("-beta");
+    return s;
+}
+
+
+
+
+