Bitflash: fair-launch release

Satoshi's bitcoin-0.1.0 reborn with RandomX CPU proof of work, anonymous .btf
addressing over Nostr with CGNAT rendezvous, automatic peer discovery, a
headless Linux node, and Windows GUI wallet. Fair launch, no premine, 21M cap.

1 files changed, 604 insertions, 0 deletions

diff --git a/src/db.cpp b/src/db.cpp
new file mode 100644
index 0000000..0df68fc
--- /dev/null
+++ b/src/db.cpp
@@ -0,0 +1,604 @@
+// Copyright (c) 2009 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"
+
+
+
+
+
+
+//
+// CDB
+//
+
+static CCriticalSection cs_db;
+static bool fDbEnvInit = false;
+DbEnv dbenv(0u);
+static map<string, int> mapFileUseCount;
+
+class CDBInit
+{
+public:
+    CDBInit()
+    {
+    }
+    ~CDBInit()
+    {
+        if (fDbEnvInit)
+        {
+            dbenv.close(0);
+            fDbEnvInit = false;
+        }
+    }
+}
+instance_of_cdbinit;
+
+
+CDB::CDB(const char* pszFile, const char* pszMode, bool fTxn) : pdb(NULL)
+{
+    int ret;
+    if (pszFile == NULL)
+        return;
+
+    bool fCreate = strchr(pszMode, 'c');
+    bool fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w'));
+    unsigned int nFlags = DB_THREAD;
+    if (fCreate)
+        nFlags |= DB_CREATE;
+    else if (fReadOnly)
+        nFlags |= DB_RDONLY;
+    if (!fReadOnly || fTxn)
+        nFlags |= DB_AUTO_COMMIT;
+
+    CRITICAL_BLOCK(cs_db)
+    {
+        if (!fDbEnvInit)
+        {
+            string strAppDir = GetAppDir();
+            string strLogDir = strAppDir + "/database";
+            _mkdir(strLogDir.c_str());
+            printf("dbenv.open strAppDir=%s\n", strAppDir.c_str());
+
+            dbenv.set_lg_dir(strLogDir.c_str());
+            dbenv.set_lg_max(10000000);
+            dbenv.set_lk_max_locks(10000);
+            dbenv.set_lk_max_objects(10000);
+            dbenv.set_errfile(fopen("db.log", "a")); /// debug
+            ///dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1); /// causes corruption
+            ret = dbenv.open(strAppDir.c_str(),
+                             DB_CREATE     |
+                             DB_INIT_LOCK  |
+                             DB_INIT_LOG   |
+                             DB_INIT_MPOOL |
+                             DB_INIT_TXN   |
+                             DB_THREAD     |
+                             DB_PRIVATE    |
+                             DB_RECOVER,
+                             0);
+            if (ret > 0)
+                throw runtime_error(strprintf("CDB() : error %d opening database environment\n", ret));
+            fDbEnvInit = true;
+        }
+
+        strFile = pszFile;
+        ++mapFileUseCount[strFile];
+    }
+
+    pdb = new Db(&dbenv, 0);
+
+    ret = pdb->open(NULL,      // Txn pointer
+                    pszFile,   // Filename
+                    "main",    // Logical db name
+                    DB_BTREE,  // Database type
+                    nFlags,    // Flags
+                    0);
+
+    if (ret > 0)
+    {
+        delete pdb;
+        pdb = NULL;
+        CRITICAL_BLOCK(cs_db)
+            --mapFileUseCount[strFile];
+        strFile = "";
+        throw runtime_error(strprintf("CDB() : can't open database file %s, error %d\n", pszFile, ret));
+    }
+
+    if (fCreate && !Exists(string("version")))
+        WriteVersion(VERSION);
+
+    RandAddSeed();
+}
+
+void CDB::Close()
+{
+    if (!pdb)
+        return;
+    if (!vTxn.empty())
+        vTxn.front()->abort();
+    vTxn.clear();
+    pdb->close(0);
+    delete pdb;
+    pdb = NULL;
+    dbenv.txn_checkpoint(0, 0, 0);
+
+    CRITICAL_BLOCK(cs_db)
+        --mapFileUseCount[strFile];
+
+    RandAddSeed();
+}
+
+void DBFlush(bool fShutdown)
+{
+    // Flush log data to the actual data file
+    //  on all files that are not in use
+    printf("DBFlush(%s)\n", fShutdown ? "true" : "false");
+    CRITICAL_BLOCK(cs_db)
+    {
+        dbenv.txn_checkpoint(0, 0, 0);
+        map<string, int>::iterator mi = mapFileUseCount.begin();
+        while (mi != mapFileUseCount.end())
+        {
+            string strFile = (*mi).first;
+            int nRefCount = (*mi).second;
+            if (nRefCount == 0)
+            {
+                dbenv.lsn_reset(strFile.c_str(), 0);
+                mapFileUseCount.erase(mi++);
+            }
+            else
+                mi++;
+        }
+        if (fShutdown)
+        {
+            char** listp;
+            if (mapFileUseCount.empty())
+                dbenv.log_archive(&listp, DB_ARCH_REMOVE);
+            dbenv.close(0);
+            fDbEnvInit = false;
+        }
+    }
+}
+
+
+
+
+
+
+//
+// CTxDB
+//
+
+bool CTxDB::ReadTxIndex(uint256 hash, CTxIndex& txindex)
+{
+    assert(!fClient);
+    txindex.SetNull();
+    return Read(make_pair(string("tx"), hash), txindex);
+}
+
+bool CTxDB::UpdateTxIndex(uint256 hash, const CTxIndex& txindex)
+{
+    assert(!fClient);
+    return Write(make_pair(string("tx"), hash), txindex);
+}
+
+bool CTxDB::AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight)
+{
+    assert(!fClient);
+
+    // Add to tx index
+    uint256 hash = tx.GetHash();
+    CTxIndex txindex(pos, tx.vout.size());
+    return Write(make_pair(string("tx"), hash), txindex);
+}
+
+bool CTxDB::EraseTxIndex(const CTransaction& tx)
+{
+    assert(!fClient);
+    uint256 hash = tx.GetHash();
+
+    return Erase(make_pair(string("tx"), hash));
+}
+
+bool CTxDB::ContainsTx(uint256 hash)
+{
+    assert(!fClient);
+    return Exists(make_pair(string("tx"), hash));
+}
+
+bool CTxDB::ReadOwnerTxes(uint160 hash160, int nMinHeight, vector<CTransaction>& vtx)
+{
+    assert(!fClient);
+    vtx.clear();
+
+    // Get cursor
+    Dbc* pcursor = GetCursor();
+    if (!pcursor)
+        return false;
+
+    unsigned int fFlags = DB_SET_RANGE;
+    loop
+    {
+        // Read next record
+        CDataStream ssKey;
+        if (fFlags == DB_SET_RANGE)
+            ssKey << string("owner") << hash160 << CDiskTxPos(0, 0, 0);
+        CDataStream ssValue;
+        int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
+        fFlags = DB_NEXT;
+        if (ret == DB_NOTFOUND)
+            break;
+        else if (ret != 0)
+            return false;
+
+        // Unserialize
+        string strType;
+        uint160 hashItem;
+        CDiskTxPos pos;
+        ssKey >> strType >> hashItem >> pos;
+        int nItemHeight;
+        ssValue >> nItemHeight;
+
+        // Read transaction
+        if (strType != "owner" || hashItem != hash160)
+            break;
+        if (nItemHeight >= nMinHeight)
+        {
+            vtx.resize(vtx.size()+1);
+            if (!vtx.back().ReadFromDisk(pos))
+                return false;
+        }
+    }
+    return true;
+}
+
+bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex)
+{
+    assert(!fClient);
+    tx.SetNull();
+    if (!ReadTxIndex(hash, txindex))
+        return false;
+    return (tx.ReadFromDisk(txindex.pos));
+}
+
+bool CTxDB::ReadDiskTx(uint256 hash, CTransaction& tx)
+{
+    CTxIndex txindex;
+    return ReadDiskTx(hash, tx, txindex);
+}
+
+bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex)
+{
+    return ReadDiskTx(outpoint.hash, tx, txindex);
+}
+
+bool CTxDB::ReadDiskTx(COutPoint outpoint, CTransaction& tx)
+{
+    CTxIndex txindex;
+    return ReadDiskTx(outpoint.hash, tx, txindex);
+}
+
+bool CTxDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
+{
+    return Write(make_pair(string("blockindex"), blockindex.GetBlockHash()), blockindex);
+}
+
+bool CTxDB::EraseBlockIndex(uint256 hash)
+{
+    return Erase(make_pair(string("blockindex"), hash));
+}
+
+bool CTxDB::ReadHashBestChain(uint256& hashBestChain)
+{
+    return Read(string("hashBestChain"), hashBestChain);
+}
+
+bool CTxDB::WriteHashBestChain(uint256 hashBestChain)
+{
+    return Write(string("hashBestChain"), hashBestChain);
+}
+
+CBlockIndex* InsertBlockIndex(uint256 hash)
+{
+    if (hash == 0)
+        return NULL;
+
+    // Return existing
+    map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hash);
+    if (mi != mapBlockIndex.end())
+        return (*mi).second;
+
+    // Create new
+    CBlockIndex* pindexNew = new CBlockIndex();
+    if (!pindexNew)
+        throw runtime_error("LoadBlockIndex() : new CBlockIndex failed");
+    mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
+    pindexNew->phashBlock = &((*mi).first);
+
+    return pindexNew;
+}
+
+bool CTxDB::LoadBlockIndex()
+{
+    // Get cursor
+    Dbc* pcursor = GetCursor();
+    if (!pcursor)
+        return false;
+
+    unsigned int fFlags = DB_SET_RANGE;
+    loop
+    {
+        // Read next record
+        CDataStream ssKey;
+        if (fFlags == DB_SET_RANGE)
+            ssKey << make_pair(string("blockindex"), uint256(0));
+        CDataStream ssValue;
+        int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
+        fFlags = DB_NEXT;
+        if (ret == DB_NOTFOUND)
+            break;
+        else if (ret != 0)
+            return false;
+
+        // Unserialize
+        string strType;
+        ssKey >> strType;
+        if (strType == "blockindex")
+        {
+            CDiskBlockIndex diskindex;
+            ssValue >> diskindex;
+
+            // Construct block index object
+            CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
+            pindexNew->pprev          = InsertBlockIndex(diskindex.hashPrev);
+            pindexNew->pnext          = InsertBlockIndex(diskindex.hashNext);
+            pindexNew->nFile          = diskindex.nFile;
+            pindexNew->nBlockPos      = diskindex.nBlockPos;
+            pindexNew->nHeight        = diskindex.nHeight;
+            pindexNew->nVersion       = diskindex.nVersion;
+            pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
+            pindexNew->nTime          = diskindex.nTime;
+            pindexNew->nBits          = diskindex.nBits;
+            pindexNew->nNonce         = diskindex.nNonce;
+
+            // Watch for genesis block and best block
+            if (pindexGenesisBlock == NULL && diskindex.GetBlockHash() == hashGenesisBlock)
+                pindexGenesisBlock = pindexNew;
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    if (!ReadHashBestChain(hashBestChain))
+    {
+        if (pindexGenesisBlock == NULL)
+            return true;
+        return error("CTxDB::LoadBlockIndex() : hashBestChain not found\n");
+    }
+
+    if (!mapBlockIndex.count(hashBestChain))
+        return error("CTxDB::LoadBlockIndex() : blockindex for hashBestChain not found\n");
+    pindexBest = mapBlockIndex[hashBestChain];
+    nBestHeight = pindexBest->nHeight;
+    printf("LoadBlockIndex(): hashBestChain=%s  height=%d\n", hashBestChain.ToString().substr(0,14).c_str(), nBestHeight);
+
+    return true;
+}
+
+
+
+
+
+//
+// CAddrDB
+//
+
+bool CAddrDB::WriteAddress(const CAddress& addr)
+{
+    return Write(make_pair(string("addr"), addr.GetKey()), addr);
+}
+
+bool CAddrDB::LoadAddresses()
+{
+    CRITICAL_BLOCK(cs_mapAddresses)
+    {
+        // Load user provided addresses
+        CAutoFile filein = fopen("addr.txt", "rt");
+        if (filein)
+        {
+            try
+            {
+                char psz[1000];
+                while (fgets(psz, sizeof(psz), filein))
+                {
+                    CAddress addr(psz, NODE_NETWORK);
+                    if (addr.ip != 0)
+                        AddAddress(*this, addr);
+                }
+            }
+            catch (...) { }
+        }
+
+        // Get cursor
+        Dbc* pcursor = GetCursor();
+        if (!pcursor)
+            return false;
+
+        loop
+        {
+            // Read next record
+            CDataStream ssKey;
+            CDataStream ssValue;
+            int ret = ReadAtCursor(pcursor, ssKey, ssValue);
+            if (ret == DB_NOTFOUND)
+                break;
+            else if (ret != 0)
+                return false;
+
+            // Unserialize
+            string strType;
+            ssKey >> strType;
+            if (strType == "addr")
+            {
+                CAddress addr;
+                ssValue >> addr;
+                mapAddresses.insert(make_pair(addr.GetKey(), addr));
+            }
+        }
+
+        //// debug print
+        printf("mapAddresses:\n");
+        foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
+            item.second.print();
+        printf("-----\n");
+    }
+
+    return true;
+}
+
+bool LoadAddresses()
+{
+    return CAddrDB("cr+").LoadAddresses();
+}
+
+
+
+
+//
+// CReviewDB
+//
+
+bool CReviewDB::ReadReviews(uint256 hash, vector<CReview>& vReviews)
+{
+    vReviews.size(); // msvc workaround, just need to do anything with vReviews
+    return Read(make_pair(string("reviews"), hash), vReviews);
+}
+
+bool CReviewDB::WriteReviews(uint256 hash, const vector<CReview>& vReviews)
+{
+    return Write(make_pair(string("reviews"), hash), vReviews);
+}
+
+
+
+
+
+
+
+//
+// CWalletDB
+//
+
+bool CWalletDB::LoadWallet(vector<unsigned char>& vchDefaultKeyRet)
+{
+    vchDefaultKeyRet.clear();
+
+    //// todo: shouldn't we catch exceptions and try to recover and continue?
+    CRITICAL_BLOCK(cs_mapKeys)
+    CRITICAL_BLOCK(cs_mapWallet)
+    {
+        // Get cursor
+        Dbc* pcursor = GetCursor();
+        if (!pcursor)
+            return false;
+
+        loop
+        {
+            // Read next record
+            CDataStream ssKey;
+            CDataStream ssValue;
+            int ret = ReadAtCursor(pcursor, ssKey, ssValue);
+            if (ret == DB_NOTFOUND)
+                break;
+            else if (ret != 0)
+                return false;
+
+            // Unserialize
+            // Taking advantage of the fact that pair serialization
+            // is just the two items serialized one after the other
+            string strType;
+            ssKey >> strType;
+            if (strType == "name")
+            {
+                string strAddress;
+                ssKey >> strAddress;
+                ssValue >> mapAddressBook[strAddress];
+            }
+            else if (strType == "tx")
+            {
+                uint256 hash;
+                ssKey >> hash;
+                CWalletTx& wtx = mapWallet[hash];
+                ssValue >> wtx;
+
+                if (wtx.GetHash() != hash)
+                    printf("Error in wallet.dat, hash mismatch\n");
+
+                //// debug print
+                //printf("LoadWallet  %s\n", wtx.GetHash().ToString().c_str());
+                //printf(" %12I64d  %s  %s  %s\n",
+                //    wtx.vout[0].nValue,
+                //    DateTimeStr(wtx.nTime).c_str(),
+                //    wtx.hashBlock.ToString().substr(0,14).c_str(),
+                //    wtx.mapValue["message"].c_str());
+            }
+            else if (strType == "key")
+            {
+                vector<unsigned char> vchPubKey;
+                ssKey >> vchPubKey;
+                CPrivKey vchPrivKey;
+                ssValue >> vchPrivKey;
+
+                mapKeys[vchPubKey] = vchPrivKey;
+                mapPubKeys[Hash160(vchPubKey)] = vchPubKey;
+            }
+            else if (strType == "defaultkey")
+            {
+                ssValue >> vchDefaultKeyRet;
+            }
+            else if (strType == "setting")  /// or settings or option or options or config?
+            {
+                string strKey;
+                ssKey >> strKey;
+                if (strKey == "fGenerateBitcoins")  ssValue >> fGenerateBitcoins;
+                if (strKey == "nTransactionFee")    ssValue >> nTransactionFee;
+                if (strKey == "addrIncoming")       ssValue >> addrIncoming;
+            }
+        }
+    }
+
+    printf("fGenerateBitcoins = %d\n", fGenerateBitcoins);
+    printf("nTransactionFee = %I64d\n", nTransactionFee);
+    printf("addrIncoming = %s\n", addrIncoming.ToString().c_str());
+
+    return true;
+}
+
+bool LoadWallet()
+{
+    vector<unsigned char> vchDefaultKey;
+    if (!CWalletDB("cr").LoadWallet(vchDefaultKey))
+        return false;
+
+    if (mapKeys.count(vchDefaultKey))
+    {
+        // Set keyUser
+        keyUser.SetPubKey(vchDefaultKey);
+        keyUser.SetPrivKey(mapKeys[vchDefaultKey]);
+    }
+    else
+    {
+        // Create new keyUser and set as default key
+        keyUser.MakeNewKey();
+        if (!AddKey(keyUser))
+            return false;
+        if (!SetAddressBookName(PubKeyToAddress(keyUser.GetPubKey()), "Your Address"))
+            return false;
+        CWalletDB().WriteDefaultKey(keyUser.GetPubKey());
+    }
+
+    return true;
+}