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150 lines
3.3 KiB
150 lines
3.3 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2012 The Bitcoin developers |
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// Distributed under the MIT/X11 software license, see the accompanying |
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// file license.txt or http://www.opensource.org/licenses/mit-license.php. |
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#include "protocol.h" |
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#include "util.h" |
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#include "netbase.h" |
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#ifndef WIN32 |
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# include <arpa/inet.h> |
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#endif |
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static const char* ppszTypeName[] = |
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{ |
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"ERROR", |
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"tx", |
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"block", |
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}; |
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CMessageHeader::CMessageHeader() |
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{ |
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memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart)); |
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memset(pchCommand, 0, sizeof(pchCommand)); |
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pchCommand[1] = 1; |
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nMessageSize = -1; |
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nChecksum = 0; |
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} |
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CMessageHeader::CMessageHeader(const char* pszCommand, unsigned int nMessageSizeIn) |
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{ |
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memcpy(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart)); |
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strncpy(pchCommand, pszCommand, COMMAND_SIZE); |
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nMessageSize = nMessageSizeIn; |
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nChecksum = 0; |
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} |
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std::string CMessageHeader::GetCommand() const |
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{ |
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if (pchCommand[COMMAND_SIZE-1] == 0) |
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return std::string(pchCommand, pchCommand + strlen(pchCommand)); |
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else |
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return std::string(pchCommand, pchCommand + COMMAND_SIZE); |
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} |
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bool CMessageHeader::IsValid() const |
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{ |
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// Check start string |
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if (memcmp(pchMessageStart, ::pchMessageStart, sizeof(pchMessageStart)) != 0) |
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return false; |
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// Check the command string for errors |
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for (const char* p1 = pchCommand; p1 < pchCommand + COMMAND_SIZE; p1++) |
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{ |
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if (*p1 == 0) |
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{ |
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// Must be all zeros after the first zero |
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for (; p1 < pchCommand + COMMAND_SIZE; p1++) |
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if (*p1 != 0) |
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return false; |
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} |
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else if (*p1 < ' ' || *p1 > 0x7E) |
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return false; |
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} |
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// Message size |
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if (nMessageSize > MAX_SIZE) |
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{ |
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printf("CMessageHeader::IsValid() : (%s, %u bytes) nMessageSize > MAX_SIZE\n", GetCommand().c_str(), nMessageSize); |
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return false; |
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} |
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return true; |
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} |
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CAddress::CAddress() : CService() |
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{ |
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Init(); |
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} |
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CAddress::CAddress(CService ipIn, uint64 nServicesIn) : CService(ipIn) |
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{ |
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Init(); |
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nServices = nServicesIn; |
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} |
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void CAddress::Init() |
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{ |
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nServices = NODE_NETWORK; |
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nTime = 100000000; |
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nLastTry = 0; |
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} |
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CInv::CInv() |
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{ |
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type = 0; |
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hash = 0; |
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} |
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CInv::CInv(int typeIn, const uint256& hashIn) |
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{ |
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type = typeIn; |
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hash = hashIn; |
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} |
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CInv::CInv(const std::string& strType, const uint256& hashIn) |
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{ |
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int i; |
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for (i = 1; i < ARRAYLEN(ppszTypeName); i++) |
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{ |
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if (strType == ppszTypeName[i]) |
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{ |
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type = i; |
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break; |
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} |
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} |
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if (i == ARRAYLEN(ppszTypeName)) |
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throw std::out_of_range(strprintf("CInv::CInv(string, uint256) : unknown type '%s'", strType.c_str())); |
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hash = hashIn; |
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} |
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bool operator<(const CInv& a, const CInv& b) |
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{ |
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return (a.type < b.type || (a.type == b.type && a.hash < b.hash)); |
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} |
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bool CInv::IsKnownType() const |
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{ |
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return (type >= 1 && type < ARRAYLEN(ppszTypeName)); |
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} |
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const char* CInv::GetCommand() const |
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{ |
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if (!IsKnownType()) |
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throw std::out_of_range(strprintf("CInv::GetCommand() : type=%d unknown type", type)); |
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return ppszTypeName[type]; |
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} |
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std::string CInv::ToString() const |
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{ |
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return strprintf("%s %s", GetCommand(), hash.ToString().substr(0,20).c_str()); |
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} |
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void CInv::print() const |
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{ |
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printf("CInv(%s)\n", ToString().c_str()); |
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} |
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