Merge branch 'checknewblock' of git://github.com/luke-jr/bitcoin

src/db.cpp

@@ -42,6 +42,7 @@ void CDBEnv::EnvShutdown()
     {
         printf("EnvShutdown exception: %s (%d)\n", e.what(), e.get_errno());
     }
+    if (!fMockDb)
         DbEnv(0).remove(GetDataDir().string().c_str(), 0);
 }
 
@@ -103,12 +104,48 @@ bool CDBEnv::Open(boost::filesystem::path pathEnv_)
         return error("CDB() : error %d opening database environment", ret);
 
     fDbEnvInit = true;
+    fMockDb = false;
     return true;
 }
 
+void CDBEnv::MakeMock()
+{
+    if (fDbEnvInit)
+        throw runtime_error("CDBEnv::MakeMock(): already initialized");
+
+    if (fShutdown)
+        throw runtime_error("CDBEnv::MakeMock(): during shutdown");
+
+    printf("CDBEnv::MakeMock()\n");
+
+    dbenv.set_cachesize(1, 0, 1);
+    dbenv.set_lg_bsize(10485760*4);
+    dbenv.set_lg_max(10485760);
+    dbenv.set_lk_max_locks(10000);
+    dbenv.set_lk_max_objects(10000);
+    dbenv.set_flags(DB_AUTO_COMMIT, 1);
+    dbenv.log_set_config(DB_LOG_IN_MEMORY, 1);
+    int ret = dbenv.open(NULL,
+                     DB_CREATE     |
+                     DB_INIT_LOCK  |
+                     DB_INIT_LOG   |
+                     DB_INIT_MPOOL |
+                     DB_INIT_TXN   |
+                     DB_THREAD     |
+                     DB_PRIVATE,
+                     S_IRUSR | S_IWUSR);
+    if (ret > 0)
+        throw runtime_error(strprintf("CDBEnv::MakeMock(): error %d opening database environment", ret));
+
+    fDbEnvInit = true;
+    fMockDb = true;
+}
+
 void CDBEnv::CheckpointLSN(std::string strFile)
 {
     dbenv.txn_checkpoint(0, 0, 0);
+    if (fMockDb)
+        return;
     dbenv.lsn_reset(strFile.c_str(), 0);
 }
 
@@ -138,8 +175,17 @@ CDB::CDB(const char *pszFile, const char* pszMode) :
         {
             pdb = new Db(&bitdb.dbenv, 0);
 
+            bool fMockDb = bitdb.IsMock();
+            if (fMockDb)
+            {
+                DbMpoolFile*mpf = pdb->get_mpf();
+                ret = mpf->set_flags(DB_MPOOL_NOFILE, 1);
+                if (ret != 0)
+                    throw runtime_error(strprintf("CDB() : failed to configure for no temp file backing for database %s", pszFile));
+            }
+
             ret = pdb->open(NULL,      // Txn pointer
-                            pszFile,   // Filename
+                            fMockDb ? NULL : pszFile,   // Filename
                             "main",    // Logical db name
                             DB_BTREE,  // Database type
                             nFlags,    // Flags
@@ -337,6 +383,7 @@ void CDBEnv::Flush(bool fShutdown)
                 dbenv.txn_checkpoint(0, 0, 0);
                 if (!IsChainFile(strFile) || fDetachDB) {
                     printf("%s detach\n", strFile.c_str());
+                    if (!fMockDb)
                         dbenv.lsn_reset(strFile.c_str(), 0);
                 }
                 printf("%s closed\n", strFile.c_str());

src/db.h

@@ -35,6 +35,7 @@ class CDBEnv
 private:
     bool fDetachDB;
     bool fDbEnvInit;
+    bool fMockDb;
     boost::filesystem::path pathEnv;
 
     void EnvShutdown();
@@ -47,6 +48,8 @@ public:
 
     CDBEnv();
     ~CDBEnv();
+    void MakeMock();
+    bool IsMock() { return fMockDb; };
     bool Open(boost::filesystem::path pathEnv_);
     void Close();
     void Flush(bool fShutdown);

src/main.cpp

@@ -653,6 +653,15 @@ bool CTxMemPool::remove(CTransaction &tx)
     return true;
 }
 
+void
+CTxMemPool::clear()
+{
+    LOCK(cs);
+    mapTx.clear();
+    mapNextTx.clear();
+    ++nTransactionsUpdated;
+}
+
 void CTxMemPool::queryHashes(std::vector<uint256>& vtxid)
 {
     vtxid.clear();
@@ -1316,10 +1325,10 @@ bool CBlock::DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex)
     return true;
 }
 
-bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
+bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck)
 {
     // Check it again in case a previous version let a bad block in
-    if (!CheckBlock())
+    if (!CheckBlock(!fJustCheck, !fJustCheck))
         return false;
 
     // Do not allow blocks that contain transactions which 'overwrite' older transactions,
@@ -1339,7 +1348,13 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
     bool fStrictPayToScriptHash = (pindex->nTime >= nBIP16SwitchTime);
 
     //// issue here: it doesn't know the version
-    unsigned int nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK, CLIENT_VERSION) - 1 + GetSizeOfCompactSize(vtx.size());
+    unsigned int nTxPos;
+    if (fJustCheck)
+        // FetchInputs treats CDiskTxPos(1,1,1) as a special "refer to memorypool" indicator
+        // Since we're just checking the block and not actually connecting it, it might not (and probably shouldn't) be on the disk to get the transaction from
+        nTxPos = 1;
+    else
+        nTxPos = pindex->nBlockPos + ::GetSerializeSize(CBlock(), SER_DISK, CLIENT_VERSION) - 1 + GetSizeOfCompactSize(vtx.size());
 
     map<uint256, CTxIndex> mapQueuedChanges;
     int64 nFees = 0;
@@ -1362,6 +1377,7 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
             return DoS(100, error("ConnectBlock() : too many sigops"));
 
         CDiskTxPos posThisTx(pindex->nFile, pindex->nBlockPos, nTxPos);
+        if (!fJustCheck)
             nTxPos += ::GetSerializeSize(tx, SER_DISK, CLIENT_VERSION);
 
         MapPrevTx mapInputs;
@@ -1390,6 +1406,12 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
         mapQueuedChanges[hashTx] = CTxIndex(posThisTx, tx.vout.size());
     }
 
+    if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
+        return false;
+
+    if (fJustCheck)
+        return true;
+
     // Write queued txindex changes
     for (map<uint256, CTxIndex>::iterator mi = mapQueuedChanges.begin(); mi != mapQueuedChanges.end(); ++mi)
     {
@@ -1397,9 +1419,6 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex)
             return error("ConnectBlock() : UpdateTxIndex failed");
     }
 
-    if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
-        return false;
-
     // Update block index on disk without changing it in memory.
     // The memory index structure will be changed after the db commits.
     if (pindex->pprev)
@@ -1703,7 +1722,7 @@ bool CBlock::AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos)
 
 
 
-bool CBlock::CheckBlock() const
+bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
 {
     // These are checks that are independent of context
     // that can be verified before saving an orphan block.
@@ -1713,7 +1732,7 @@ bool CBlock::CheckBlock() const
         return DoS(100, error("CheckBlock() : size limits failed"));
 
     // Check proof of work matches claimed amount
-    if (!CheckProofOfWork(GetHash(), nBits))
+    if (fCheckPOW && !CheckProofOfWork(GetHash(), nBits))
         return DoS(50, error("CheckBlock() : proof of work failed"));
 
     // Check timestamp
@@ -1751,7 +1770,7 @@ bool CBlock::CheckBlock() const
         return DoS(100, error("CheckBlock() : out-of-bounds SigOpCount"));
 
     // Check merkleroot
-    if (hashMerkleRoot != BuildMerkleTree())
+    if (fCheckMerkleRoot && hashMerkleRoot != BuildMerkleTree())
         return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
 
     return true;
@@ -3312,6 +3331,9 @@ public:
 uint64 nLastBlockTx = 0;
 uint64 nLastBlockSize = 0;
 
+const char* pszDummy = "\0\0";
+CScript scriptDummy(std::vector<unsigned char>(pszDummy, pszDummy + sizeof(pszDummy)));
+
 CBlock* CreateNewBlock(CReserveKey& reservekey)
 {
     CBlockIndex* pindexPrev = pindexBest;
@@ -3469,16 +3491,22 @@ CBlock* CreateNewBlock(CReserveKey& reservekey)
         nLastBlockSize = nBlockSize;
         printf("CreateNewBlock(): total size %lu\n", nBlockSize);
 
-    }
     pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
 
     // Fill in header
     pblock->hashPrevBlock  = pindexPrev->GetBlockHash();
-    pblock->hashMerkleRoot = pblock->BuildMerkleTree();
     pblock->UpdateTime(pindexPrev);
     pblock->nBits          = GetNextWorkRequired(pindexPrev, pblock.get());
     pblock->nNonce         = 0;
 
+        pblock->vtx[0].vin[0].scriptSig = scriptDummy;
+        CBlockIndex indexDummy(1, 1, *pblock);
+        indexDummy.pprev = pindexPrev;
+        indexDummy.nHeight = pindexPrev->nHeight + 1;
+        if (!pblock->ConnectBlock(txdb, &indexDummy, true))
+            throw std::runtime_error("CreateNewBlock() : ConnectBlock failed");
+    }
+
     return pblock.release();
 }
 

src/main.h

@@ -1016,11 +1016,11 @@ public:
 
 
     bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
-    bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex);
+    bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck=false);
     bool ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions=true);
     bool SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew);
     bool AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos);
-    bool CheckBlock() const;
+    bool CheckBlock(bool fCheckPOW=true, bool fCheckMerkleRoot=true) const;
     bool AcceptBlock();
 
 private:
@@ -1606,6 +1606,7 @@ public:
                 bool fCheckInputs, bool* pfMissingInputs);
     bool addUnchecked(const uint256& hash, CTransaction &tx);
     bool remove(CTransaction &tx);
+    void clear();
     void queryHashes(std::vector<uint256>& vtxid);
 
     unsigned long size()

src/test/miner_tests.cpp

@@ -1,12 +1,202 @@
 #include <boost/test/unit_test.hpp>
 
+#include "init.h"
+#include "main.h"
 #include "uint256.h"
 #include "util.h"
+#include "wallet.h"
 
 extern void SHA256Transform(void* pstate, void* pinput, const void* pinit);
 
 BOOST_AUTO_TEST_SUITE(miner_tests)
 
+static
+struct {
+    unsigned char extranonce;
+    unsigned int nonce;
+} blockinfo[] = {
+    {4, 0xa4a3e223}, {2, 0x15c32f9e}, {1, 0x0375b547}, {1, 0x7004a8a5},
+    {2, 0xce440296}, {2, 0x52cfe198}, {1, 0x77a72cd0}, {2, 0xbb5d6f84},
+    {2, 0x83f30c2c}, {1, 0x48a73d5b}, {1, 0xef7dcd01}, {2, 0x6809c6c4},
+    {2, 0x0883ab3c}, {1, 0x087bbbe2}, {2, 0x2104a814}, {2, 0xdffb6daa},
+    {1, 0xee8a0a08}, {2, 0xba4237c1}, {1, 0xa70349dc}, {1, 0x344722bb},
+    {3, 0xd6294733}, {2, 0xec9f5c94}, {2, 0xca2fbc28}, {1, 0x6ba4f406},
+    {2, 0x015d4532}, {1, 0x6e119b7c}, {2, 0x43e8f314}, {2, 0x27962f38},
+    {2, 0xb571b51b}, {2, 0xb36bee23}, {2, 0xd17924a8}, {2, 0x6bc212d9},
+    {1, 0x630d4948}, {2, 0x9a4c4ebb}, {2, 0x554be537}, {1, 0xd63ddfc7},
+    {2, 0xa10acc11}, {1, 0x759a8363}, {2, 0xfb73090d}, {1, 0xe82c6a34},
+    {1, 0xe33e92d7}, {3, 0x658ef5cb}, {2, 0xba32ff22}, {5, 0x0227a10c},
+    {1, 0xa9a70155}, {5, 0xd096d809}, {1, 0x37176174}, {1, 0x830b8d0f},
+    {1, 0xc6e3910e}, {2, 0x823f3ca8}, {1, 0x99850849}, {1, 0x7521fb81},
+    {1, 0xaacaabab}, {1, 0xd645a2eb}, {5, 0x7aea1781}, {5, 0x9d6e4b78},
+    {1, 0x4ce90fd8}, {1, 0xabdc832d}, {6, 0x4a34f32a}, {2, 0xf2524c1c},
+    {2, 0x1bbeb08a}, {1, 0xad47f480}, {1, 0x9f026aeb}, {1, 0x15a95049},
+    {2, 0xd1cb95b2}, {2, 0xf84bbda5}, {1, 0x0fa62cd1}, {1, 0xe05f9169},
+    {1, 0x78d194a9}, {5, 0x3e38147b}, {5, 0x737ba0d4}, {1, 0x63378e10},
+    {1, 0x6d5f91cf}, {2, 0x88612eb8}, {2, 0xe9639484}, {1, 0xb7fabc9d},
+    {2, 0x19b01592}, {1, 0x5a90dd31}, {2, 0x5bd7e028}, {2, 0x94d00323},
+    {1, 0xa9b9c01a}, {1, 0x3a40de61}, {1, 0x56e7eec7}, {5, 0x859f7ef6},
+    {1, 0xfd8e5630}, {1, 0x2b0c9f7f}, {1, 0xba700e26}, {1, 0x7170a408},
+    {1, 0x70de86a8}, {1, 0x74d64cd5}, {1, 0x49e738a1}, {2, 0x6910b602},
+    {0, 0x643c565f}, {1, 0x54264b3f}, {2, 0x97ea6396}, {2, 0x55174459},
+    {2, 0x03e8779a}, {1, 0x98f34d8f}, {1, 0xc07b2b07}, {1, 0xdfe29668},
+    {1, 0x3141c7c1}, {1, 0xb3b595f4}, {1, 0x735abf08}, {5, 0x623bfbce},
+    {2, 0xd351e722}, {1, 0xf4ca48c9}, {1, 0x5b19c670}, {1, 0xa164bf0e},
+    {2, 0xbbbeb305}, {2, 0xfe1c810a},
+};
+
+// NOTE: These tests rely on CreateNewBlock doing its own self-validation!
+BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
+{
+    CReserveKey reservekey(pwalletMain);
+    CBlock *pblock;
+    CTransaction tx;
+    CScript script;
+    uint256 hash;
+
+    // Simple block creation, nothing special yet:
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+
+    // We can't make transactions until we have inputs
+    // Therefore, load 100 blocks :)
+    std::vector<CTransaction*>txFirst;
+    for (unsigned int i = 0; i < sizeof(blockinfo)/sizeof(*blockinfo); ++i)
+    {
+        pblock->nTime = pindexBest->GetMedianTimePast()+1;
+        pblock->vtx[0].vin[0].scriptSig = CScript();
+        pblock->vtx[0].vin[0].scriptSig.push_back(blockinfo[i].extranonce);
+        pblock->vtx[0].vin[0].scriptSig.push_back(pindexBest->nHeight);
+        pblock->vtx[0].vout[0].scriptPubKey = CScript();
+        if (txFirst.size() < 2)
+            txFirst.push_back(new CTransaction(pblock->vtx[0]));
+        pblock->hashMerkleRoot = pblock->BuildMerkleTree();
+        pblock->nNonce = blockinfo[i].nonce;
+        assert(ProcessBlock(NULL, pblock));
+        pblock->hashPrevBlock = pblock->GetHash();
+    }
+    delete pblock;
+
+    // Just to make sure we can still make simple blocks
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+
+    // block sigops > limit: 1000 CHECKMULTISIG + 1
+    tx.vin.resize(1);
+    // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
+    tx.vin[0].scriptSig = CScript() << OP_0 << OP_0 << OP_0 << OP_NOP << OP_CHECKMULTISIG << OP_1;
+    tx.vin[0].prevout.hash = txFirst[0]->GetHash();
+    tx.vin[0].prevout.n = 0;
+    tx.vout.resize(1);
+    tx.vout[0].nValue = 5000000000LL;
+    for (unsigned int i = 0; i < 1001; ++i)
+    {
+        tx.vout[0].nValue -= 1000000;
+        hash = tx.GetHash();
+        mempool.addUnchecked(hash, tx);
+        tx.vin[0].prevout.hash = hash;
+    }
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // block size > limit
+    tx.vin[0].scriptSig = CScript();
+    // 18 * (520char + DROP) + OP_1 = 9433 bytes
+    std::vector<unsigned char> vchData(520);
+    for (unsigned int i = 0; i < 18; ++i)
+        tx.vin[0].scriptSig << vchData << OP_DROP;
+    tx.vin[0].scriptSig << OP_1;
+    tx.vin[0].prevout.hash = txFirst[0]->GetHash();
+    tx.vout[0].nValue = 5000000000LL;
+    for (unsigned int i = 0; i < 128; ++i)
+    {
+        tx.vout[0].nValue -= 10000000;
+        hash = tx.GetHash();
+        mempool.addUnchecked(hash, tx);
+        tx.vin[0].prevout.hash = hash;
+    }
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // orphan in mempool
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // child with higher priority than parent
+    tx.vin[0].scriptSig = CScript() << OP_1;
+    tx.vin[0].prevout.hash = txFirst[1]->GetHash();
+    tx.vout[0].nValue = 4900000000LL;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    tx.vin[0].prevout.hash = hash;
+    tx.vin.resize(2);
+    tx.vin[1].scriptSig = CScript() << OP_1;
+    tx.vin[1].prevout.hash = txFirst[0]->GetHash();
+    tx.vin[1].prevout.n = 0;
+    tx.vout[0].nValue = 5900000000LL;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // coinbase in mempool
+    tx.vin.resize(1);
+    tx.vin[0].prevout.SetNull();
+    tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
+    tx.vout[0].nValue = 0;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // invalid (pre-p2sh) txn in mempool
+    tx.vin[0].prevout.hash = txFirst[0]->GetHash();
+    tx.vin[0].prevout.n = 0;
+    tx.vin[0].scriptSig = CScript() << OP_1;
+    tx.vout[0].nValue = 4900000000LL;
+    script = CScript() << OP_0;
+    tx.vout[0].scriptPubKey.SetDestination(script.GetID());
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    tx.vin[0].prevout.hash = hash;
+    tx.vin[0].scriptSig = CScript() << (std::vector<unsigned char>)script;
+    tx.vout[0].nValue -= 1000000;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash,tx);
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // double spend txn pair in mempool
+    tx.vin[0].prevout.hash = txFirst[0]->GetHash();
+    tx.vin[0].scriptSig = CScript() << OP_1;
+    tx.vout[0].nValue = 4900000000LL;
+    tx.vout[0].scriptPubKey = CScript() << OP_1;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    tx.vout[0].scriptPubKey = CScript() << OP_2;
+    hash = tx.GetHash();
+    mempool.addUnchecked(hash, tx);
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    mempool.clear();
+
+    // subsidy changing
+    int nHeight = pindexBest->nHeight;
+    pindexBest->nHeight = 209999;
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    pindexBest->nHeight = 210000;
+    BOOST_CHECK(pblock = CreateNewBlock(reservekey));
+    delete pblock;
+    pindexBest->nHeight = nHeight;
+}
+
 BOOST_AUTO_TEST_CASE(sha256transform_equality)
 {
     unsigned int pSHA256InitState[8] = {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};

src/test/test_bitcoin.cpp

@@ -1,6 +1,7 @@
 #define BOOST_TEST_MODULE Bitcoin Test Suite
 #include <boost/test/unit_test.hpp>
 
+#include "db.h"
 #include "main.h"
 #include "wallet.h"
 
@@ -14,13 +15,18 @@ struct TestingSetup {
     TestingSetup() {
         fPrintToConsole = true; // don't want to write to debug.log file
         noui_connect();
-        pwalletMain = new CWallet();
+        bitdb.MakeMock();
+        LoadBlockIndex(true);
+        bool fFirstRun;
+        pwalletMain = new CWallet("wallet.dat");
+        pwalletMain->LoadWallet(fFirstRun);
         RegisterWallet(pwalletMain);
     }
     ~TestingSetup()
     {
         delete pwalletMain;
         pwalletMain = NULL;
+        bitdb.Flush(true);
     }
 };