diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/db.cpp | 110 | ||||
| -rw-r--r-- | src/db.h | 18 | ||||
| -rw-r--r-- | src/net.cpp | 100 | ||||
| -rw-r--r-- | src/net.h | 11 |
4 files changed, 111 insertions, 128 deletions
diff --git a/src/db.cpp b/src/db.cpp index a286d9f726..1f2ee1c554 100644 --- a/src/db.cpp +++ b/src/db.cpp @@ -479,113 +479,3 @@ void CDBEnv::Flush(bool fShutdown) } } - - - - - - - - - - -// -// CAddrDB -// - -CAddrDB::CAddrDB() -{ - pathAddr = GetDataDir() / "peers.dat"; -} - -bool CAddrDB::Write(const CAddrMan& addr) -{ - // Generate random temporary filename - unsigned short randv = 0; - RAND_bytes((unsigned char *)&randv, sizeof(randv)); - std::string tmpfn = strprintf("peers.dat.%04x", randv); - - // serialize addresses, checksum data up to that point, then append csum - CDataStream ssPeers(SER_DISK, CLIENT_VERSION); - ssPeers << FLATDATA(Params().MessageStart()); - ssPeers << addr; - uint256 hash = Hash(ssPeers.begin(), ssPeers.end()); - ssPeers << hash; - - // open temp output file, and associate with CAutoFile - boost::filesystem::path pathTmp = GetDataDir() / tmpfn; - FILE *file = fopen(pathTmp.string().c_str(), "wb"); - CAutoFile fileout = CAutoFile(file, SER_DISK, CLIENT_VERSION); - if (!fileout) - return error("CAddrman::Write() : open failed"); - - // Write and commit header, data - try { - fileout << ssPeers; - } - catch (std::exception &e) { - return error("CAddrman::Write() : I/O error"); - } - FileCommit(fileout); - fileout.fclose(); - - // replace existing peers.dat, if any, with new peers.dat.XXXX - if (!RenameOver(pathTmp, pathAddr)) - return error("CAddrman::Write() : Rename-into-place failed"); - - return true; -} - -bool CAddrDB::Read(CAddrMan& addr) -{ - // open input file, and associate with CAutoFile - FILE *file = fopen(pathAddr.string().c_str(), "rb"); - CAutoFile filein = CAutoFile(file, SER_DISK, CLIENT_VERSION); - if (!filein) - return error("CAddrman::Read() : open failed"); - - // use file size to size memory buffer - int fileSize = GetFilesize(filein); - int dataSize = fileSize - sizeof(uint256); - //Don't try to resize to a negative number if file is small - if ( dataSize < 0 ) dataSize = 0; - vector<unsigned char> vchData; - vchData.resize(dataSize); - uint256 hashIn; - - // read data and checksum from file - try { - filein.read((char *)&vchData[0], dataSize); - filein >> hashIn; - } - catch (std::exception &e) { - return error("CAddrman::Read() 2 : I/O error or stream data corrupted"); - } - filein.fclose(); - - CDataStream ssPeers(vchData, SER_DISK, CLIENT_VERSION); - - // verify stored checksum matches input data - uint256 hashTmp = Hash(ssPeers.begin(), ssPeers.end()); - if (hashIn != hashTmp) - return error("CAddrman::Read() : checksum mismatch; data corrupted"); - - unsigned char pchMsgTmp[4]; - try { - // de-serialize file header (network specific magic number) and .. - ssPeers >> FLATDATA(pchMsgTmp); - - // ... verify the network matches ours - if (memcmp(pchMsgTmp, Params().MessageStart(), sizeof(pchMsgTmp))) - return error("CAddrman::Read() : invalid network magic number"); - - // de-serialize address data into one CAddrMan object - ssPeers >> addr; - } - catch (std::exception &e) { - return error("CAddrman::Read() : I/O error or stream data corrupted"); - } - - return true; -} - @@ -305,22 +305,4 @@ public: bool static Rewrite(const std::string& strFile, const char* pszSkip = NULL); }; - - - - - - - -/** Access to the (IP) address database (peers.dat) */ -class CAddrDB -{ -private: - boost::filesystem::path pathAddr; -public: - CAddrDB(); - bool Write(const CAddrMan& addr); - bool Read(CAddrMan& addr); -}; - #endif // BITCOIN_DB_H diff --git a/src/net.cpp b/src/net.cpp index fcef9feea0..afffbdf1da 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -1942,3 +1942,103 @@ void CNode::Fuzz(int nChance) // (more changes exponentially less likely): Fuzz(2); } + +// +// CAddrDB +// + +CAddrDB::CAddrDB() +{ + pathAddr = GetDataDir() / "peers.dat"; +} + +bool CAddrDB::Write(const CAddrMan& addr) +{ + // Generate random temporary filename + unsigned short randv = 0; + RAND_bytes((unsigned char *)&randv, sizeof(randv)); + std::string tmpfn = strprintf("peers.dat.%04x", randv); + + // serialize addresses, checksum data up to that point, then append csum + CDataStream ssPeers(SER_DISK, CLIENT_VERSION); + ssPeers << FLATDATA(Params().MessageStart()); + ssPeers << addr; + uint256 hash = Hash(ssPeers.begin(), ssPeers.end()); + ssPeers << hash; + + // open temp output file, and associate with CAutoFile + boost::filesystem::path pathTmp = GetDataDir() / tmpfn; + FILE *file = fopen(pathTmp.string().c_str(), "wb"); + CAutoFile fileout = CAutoFile(file, SER_DISK, CLIENT_VERSION); + if (!fileout) + return error("CAddrman::Write() : open failed"); + + // Write and commit header, data + try { + fileout << ssPeers; + } + catch (std::exception &e) { + return error("CAddrman::Write() : I/O error"); + } + FileCommit(fileout); + fileout.fclose(); + + // replace existing peers.dat, if any, with new peers.dat.XXXX + if (!RenameOver(pathTmp, pathAddr)) + return error("CAddrman::Write() : Rename-into-place failed"); + + return true; +} + +bool CAddrDB::Read(CAddrMan& addr) +{ + // open input file, and associate with CAutoFile + FILE *file = fopen(pathAddr.string().c_str(), "rb"); + CAutoFile filein = CAutoFile(file, SER_DISK, CLIENT_VERSION); + if (!filein) + return error("CAddrman::Read() : open failed"); + + // use file size to size memory buffer + int fileSize = GetFilesize(filein); + int dataSize = fileSize - sizeof(uint256); + //Don't try to resize to a negative number if file is small + if ( dataSize < 0 ) dataSize = 0; + vector<unsigned char> vchData; + vchData.resize(dataSize); + uint256 hashIn; + + // read data and checksum from file + try { + filein.read((char *)&vchData[0], dataSize); + filein >> hashIn; + } + catch (std::exception &e) { + return error("CAddrman::Read() 2 : I/O error or stream data corrupted"); + } + filein.fclose(); + + CDataStream ssPeers(vchData, SER_DISK, CLIENT_VERSION); + + // verify stored checksum matches input data + uint256 hashTmp = Hash(ssPeers.begin(), ssPeers.end()); + if (hashIn != hashTmp) + return error("CAddrman::Read() : checksum mismatch; data corrupted"); + + unsigned char pchMsgTmp[4]; + try { + // de-serialize file header (network specific magic number) and .. + ssPeers >> FLATDATA(pchMsgTmp); + + // ... verify the network matches ours + if (memcmp(pchMsgTmp, Params().MessageStart(), sizeof(pchMsgTmp))) + return error("CAddrman::Read() : invalid network magic number"); + + // de-serialize address data into one CAddrMan object + ssPeers >> addr; + } + catch (std::exception &e) { + return error("CAddrman::Read() : I/O error or stream data corrupted"); + } + + return true; +} @@ -690,4 +690,15 @@ class CTransaction; void RelayTransaction(const CTransaction& tx, const uint256& hash); void RelayTransaction(const CTransaction& tx, const uint256& hash, const CDataStream& ss); +/** Access to the (IP) address database (peers.dat) */ +class CAddrDB +{ +private: + boost::filesystem::path pathAddr; +public: + CAddrDB(); + bool Write(const CAddrMan& addr); + bool Read(CAddrMan& addr); +}; + #endif |