Use standard C99 (and Qt) types for 64-bit integers
[novacoin.git] / src / db.cpp
index 9c8c9c4..af2ae83 100644 (file)
@@ -1,7 +1,10 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
+#include <stdint.h>
+
 #include "headers.h"
 #include "db.h"
 #include "net.h"
@@ -13,7 +16,7 @@ using namespace boost;
 
 
 unsigned int nWalletDBUpdated;
-uint64 nAccountingEntryNumber = 0;
+uint64_t nAccountingEntryNumber = 0;
 
 
 
@@ -27,6 +30,23 @@ DbEnv dbenv(0);
 static map<string, int> mapFileUseCount;
 static map<string, Db*> mapDb;
 
+static void EnvShutdown()
+{
+    if (!fDbEnvInit)
+        return;
+
+    fDbEnvInit = false;
+    try
+    {
+        dbenv.close(0);
+    }
+    catch (const DbException& e)
+    {
+        printf("EnvShutdown exception: %s (%d)\n", e.what(), e.get_errno());
+    }
+    DbEnv(0).remove(GetDataDir().c_str(), 0);
+}
+
 class CDBInit
 {
 public:
@@ -35,11 +55,7 @@ public:
     }
     ~CDBInit()
     {
-        if (fDbEnvInit)
-        {
-            dbenv.close(0);
-            fDbEnvInit = false;
-        }
+        EnvShutdown();
     }
 }
 instance_of_cdbinit;
@@ -117,7 +133,7 @@ CDB::CDB(const char* pszFile, const char* pszMode) : pdb(NULL)
             {
                 bool fTmp = fReadOnly;
                 fReadOnly = false;
-                WriteVersion(VERSION);
+                WriteVersion(CLIENT_VERSION);
                 fReadOnly = fTmp;
             }
 
@@ -164,6 +180,101 @@ void static CloseDb(const string& strFile)
     }
 }
 
+bool CDB::Rewrite(const string& strFile, const char* pszSkip)
+{
+    while (!fShutdown)
+    {
+        CRITICAL_BLOCK(cs_db)
+        {
+            if (!mapFileUseCount.count(strFile) || mapFileUseCount[strFile] == 0)
+            {
+                // Flush log data to the dat file
+                CloseDb(strFile);
+                dbenv.txn_checkpoint(0, 0, 0);
+                dbenv.lsn_reset(strFile.c_str(), 0);
+                mapFileUseCount.erase(strFile);
+
+                bool fSuccess = true;
+                printf("Rewriting %s...\n", strFile.c_str());
+                string strFileRes = strFile + ".rewrite";
+                { // surround usage of db with extra {}
+                    CDB db(strFile.c_str(), "r");
+                    Db* pdbCopy = new Db(&dbenv, 0);
+    
+                    int ret = pdbCopy->open(NULL,                 // Txn pointer
+                                            strFileRes.c_str(),   // Filename
+                                            "main",    // Logical db name
+                                            DB_BTREE,  // Database type
+                                            DB_CREATE,    // Flags
+                                            0);
+                    if (ret > 0)
+                    {
+                        printf("Cannot create database file %s\n", strFileRes.c_str());
+                        fSuccess = false;
+                    }
+    
+                    Dbc* pcursor = db.GetCursor();
+                    if (pcursor)
+                        while (fSuccess)
+                        {
+                            CDataStream ssKey;
+                            CDataStream ssValue;
+                            int ret = db.ReadAtCursor(pcursor, ssKey, ssValue, DB_NEXT);
+                            if (ret == DB_NOTFOUND)
+                            {
+                                pcursor->close();
+                                break;
+                            }
+                            else if (ret != 0)
+                            {
+                                pcursor->close();
+                                fSuccess = false;
+                                break;
+                            }
+                            if (pszSkip &&
+                                strncmp(&ssKey[0], pszSkip, std::min(ssKey.size(), strlen(pszSkip))) == 0)
+                                continue;
+                            if (strncmp(&ssKey[0], "\x07version", 8) == 0)
+                            {
+                                // Update version:
+                                ssValue.clear();
+                                ssValue << CLIENT_VERSION;
+                            }
+                            Dbt datKey(&ssKey[0], ssKey.size());
+                            Dbt datValue(&ssValue[0], ssValue.size());
+                            int ret2 = pdbCopy->put(NULL, &datKey, &datValue, DB_NOOVERWRITE);
+                            if (ret2 > 0)
+                                fSuccess = false;
+                        }
+                    if (fSuccess)
+                    {
+                        db.Close();
+                        CloseDb(strFile);
+                        if (pdbCopy->close(0))
+                            fSuccess = false;
+                        delete pdbCopy;
+                    }
+                }
+                if (fSuccess)
+                {
+                    Db dbA(&dbenv, 0);
+                    if (dbA.remove(strFile.c_str(), NULL, 0))
+                        fSuccess = false;
+                    Db dbB(&dbenv, 0);
+                    if (dbB.rename(strFileRes.c_str(), NULL, strFile.c_str(), 0))
+                        fSuccess = false;
+                }
+                if (!fSuccess)
+                    printf("Rewriting of %s FAILED!\n", strFileRes.c_str());
+                return fSuccess;
+            }
+        }
+        Sleep(100);
+    }
+    return false;
+}
+
+
 void DBFlush(bool fShutdown)
 {
     // Flush log data to the actual data file
@@ -195,9 +306,10 @@ void DBFlush(bool fShutdown)
         {
             char** listp;
             if (mapFileUseCount.empty())
+            {
                 dbenv.log_archive(&listp, DB_ARCH_REMOVE);
-            dbenv.close(0);
-            fDbEnvInit = false;
+                EnvShutdown();
+            }
         }
     }
 }
@@ -519,24 +631,6 @@ bool CAddrDB::LoadAddresses()
 {
     CRITICAL_BLOCK(cs_mapAddresses)
     {
-        // Load user provided addresses
-        CAutoFile filein = fopen((GetDataDir() + "/addr.txt").c_str(), "rt");
-        if (filein)
-        {
-            try
-            {
-                char psz[1000];
-                while (fgets(psz, sizeof(psz), filein))
-                {
-                    CAddress addr(psz, false, NODE_NETWORK);
-                    addr.nTime = 0; // so it won't relay unless successfully connected
-                    if (addr.IsValid())
-                        AddAddress(addr);
-                }
-            }
-            catch (...) { }
-        }
-
         // Get cursor
         Dbc* pcursor = GetCursor();
         if (!pcursor)
@@ -610,15 +704,15 @@ bool CWalletDB::WriteAccount(const string& strAccount, const CAccount& account)
 
 bool CWalletDB::WriteAccountingEntry(const CAccountingEntry& acentry)
 {
-    return Write(make_tuple(string("acentry"), acentry.strAccount, ++nAccountingEntryNumber), acentry);
+    return Write(boost::make_tuple(string("acentry"), acentry.strAccount, ++nAccountingEntryNumber), acentry);
 }
 
-int64 CWalletDB::GetAccountCreditDebit(const string& strAccount)
+int64_t CWalletDB::GetAccountCreditDebit(const string& strAccount)
 {
     list<CAccountingEntry> entries;
     ListAccountCreditDebit(strAccount, entries);
 
-    int64 nCreditDebit = 0;
+    int64_t nCreditDebit = 0;
     BOOST_FOREACH (const CAccountingEntry& entry, entries)
         nCreditDebit += entry.nCreditDebit;
 
@@ -638,7 +732,7 @@ void CWalletDB::ListAccountCreditDebit(const string& strAccount, list<CAccountin
         // Read next record
         CDataStream ssKey;
         if (fFlags == DB_SET_RANGE)
-            ssKey << make_tuple(string("acentry"), (fAllAccounts? string("") : strAccount), uint64(0));
+            ssKey << boost::make_tuple(string("acentry"), (fAllAccounts? string("") : strAccount), uint64_t(0));
         CDataStream ssValue;
         int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
         fFlags = DB_NEXT;
@@ -673,17 +767,17 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
     pwallet->vchDefaultKey.clear();
     int nFileVersion = 0;
     vector<uint256> vWalletUpgrade;
+    bool fIsEncrypted = false;
 
     // Modify defaults
-#ifndef __WXMSW__
+#ifndef WIN32
     // Tray icon sometimes disappears on 9.10 karmic koala 64-bit, leaving no way to access the program
     fMinimizeToTray = false;
     fMinimizeOnClose = false;
 #endif
 
     //// todo: shouldn't we catch exceptions and try to recover and continue?
-    CRITICAL_BLOCK(pwallet->cs_mapWallet)
-    CRITICAL_BLOCK(pwallet->cs_KeyStore)
+    CRITICAL_BLOCK(pwallet->cs_wallet)
     {
         // Get cursor
         Dbc* pcursor = GetCursor();
@@ -718,7 +812,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
                 ssKey >> hash;
                 CWalletTx& wtx = pwallet->mapWallet[hash];
                 ssValue >> wtx;
-                wtx.pwallet = pwallet;
+                wtx.BindWallet(pwallet);
 
                 if (wtx.GetHash() != hash)
                     printf("Error in wallet.dat, hash mismatch\n");
@@ -754,7 +848,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
             {
                 string strAccount;
                 ssKey >> strAccount;
-                uint64 nNumber;
+                uint64_t nNumber;
                 ssKey >> nNumber;
                 if (nNumber > nAccountingEntryNumber)
                     nAccountingEntryNumber = nNumber;
@@ -799,6 +893,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
                 ssValue >> vchPrivKey;
                 if (!pwallet->LoadCryptedKey(vchPubKey, vchPrivKey))
                     return DB_CORRUPT;
+                fIsEncrypted = true;
             }
             else if (strType == "defaultkey")
             {
@@ -806,7 +901,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
             }
             else if (strType == "pool")
             {
-                int64 nIndex;
+                int64_t nIndex;
                 ssKey >> nIndex;
                 pwallet->setKeyPool.insert(nIndex);
             }
@@ -822,7 +917,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
                 ssKey >> strKey;
 
                 // Options
-#ifndef GUI
+#ifndef QT_GUI
                 if (strKey == "fGenerateBitcoins")  ssValue >> fGenerateBitcoins;
 #endif
                 if (strKey == "nTransactionFee")    ssValue >> nTransactionFee;
@@ -838,9 +933,18 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
             {
                 int nMinVersion = 0;
                 ssValue >> nMinVersion;
-                if (nMinVersion > VERSION)
+                if (nMinVersion > CLIENT_VERSION)
                     return DB_TOO_NEW;
             }
+            else if (strType == "cscript")
+            {
+                uint160 hash;
+                ssKey >> hash;
+                CScript script;
+                ssValue >> script;
+                if (!pwallet->LoadCScript(hash, script))
+                    return DB_CORRUPT;
+            }
         }
         pcursor->close();
     }
@@ -859,17 +963,19 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
         printf("fUseUPnP = %d\n", fUseUPnP);
 
 
-    // Upgrade
-    if (nFileVersion < VERSION)
+    // Rewrite encrypted wallets of versions 0.4.0 and 0.5.0rc:
+    if (fIsEncrypted && (nFileVersion == 40000 || nFileVersion == 50000))
+        return DB_NEED_REWRITE;
+
+    if (nFileVersion < CLIENT_VERSION) // Update
     {
         // Get rid of old debug.log file in current directory
         if (nFileVersion <= 105 && !pszSetDataDir[0])
             unlink("debug.log");
 
-        WriteVersion(VERSION);
+        WriteVersion(CLIENT_VERSION);
     }
 
-
     return DB_LOAD_OK;
 }
 
@@ -885,7 +991,7 @@ void ThreadFlushWalletDB(void* parg)
 
     unsigned int nLastSeen = nWalletDBUpdated;
     unsigned int nLastFlushed = nWalletDBUpdated;
-    int64 nLastWalletUpdate = GetTime();
+    int64_t nLastWalletUpdate = GetTime();
     while (!fShutdown)
     {
         Sleep(500);
@@ -917,7 +1023,7 @@ void ThreadFlushWalletDB(void* parg)
                         printf("%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
                         printf("Flushing wallet.dat\n");
                         nLastFlushed = nWalletDBUpdated;
-                        int64 nStart = GetTimeMillis();
+                        int64_t nStart = GetTimeMillis();
 
                         // Flush wallet.dat so it's self contained
                         CloseDb(strFile);