diff options
Diffstat (limited to 'src/netbase.cpp')
| -rw-r--r-- | src/netbase.cpp | 177 |
1 files changed, 160 insertions, 17 deletions
diff --git a/src/netbase.cpp b/src/netbase.cpp index ec275f738..4aa7367f3 100644 --- a/src/netbase.cpp +++ b/src/netbase.cpp @@ -47,12 +47,10 @@ void SplitHostPort(std::string in, int &portOut, std::string &hostOut) { bool fBracketed = fHaveColon && (in[0]=='[' && in[colon-1]==']'); // if there is a colon, and in[0]=='[', colon is not 0, so in[colon-1] is safe bool fMultiColon = fHaveColon && (in.find_last_of(':',colon-1) != in.npos); if (fHaveColon && (colon==0 || fBracketed || !fMultiColon)) { - char *endp = NULL; - int n = strtol(in.c_str() + colon + 1, &endp, 10); - if (endp && *endp == 0 && n >= 0) { + int32_t n; + if (ParseInt32(in.substr(colon + 1), &n) && n > 0 && n < 0x10000) { in = in.substr(0, colon); - if (n > 0 && n < 0x10000) - portOut = n; + portOut = n; } } if (in.size()>0 && in[0] == '[' && in[in.size()-1] == ']') @@ -125,11 +123,6 @@ bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nM return LookupIntern(strHost.c_str(), vIP, nMaxSolutions, fAllowLookup); } -bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions) -{ - return LookupHost(pszName, vIP, nMaxSolutions, false); -} - bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions) { if (pszName[0] == 0) @@ -363,7 +356,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe } if (nRet == SOCKET_ERROR) { - LogPrintf("select() for %s failed: %i\n", addrConnect.ToString(), WSAGetLastError()); + LogPrintf("select() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError())); closesocket(hSocket); return false; } @@ -374,13 +367,13 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR) #endif { - LogPrintf("getsockopt() for %s failed: %i\n", addrConnect.ToString(), WSAGetLastError()); + LogPrintf("getsockopt() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError())); closesocket(hSocket); return false; } if (nRet != 0) { - LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), strerror(nRet)); + LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), NetworkErrorString(nRet)); closesocket(hSocket); return false; } @@ -391,7 +384,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe else #endif { - LogPrintf("connect() to %s failed: %i\n", addrConnect.ToString(), WSAGetLastError()); + LogPrintf("connect() to %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError())); closesocket(hSocket); return false; } @@ -548,6 +541,22 @@ void CNetAddr::SetIP(const CNetAddr& ipIn) memcpy(ip, ipIn.ip, sizeof(ip)); } +void CNetAddr::SetRaw(Network network, const uint8_t *ip_in) +{ + switch(network) + { + case NET_IPV4: + memcpy(ip, pchIPv4, 12); + memcpy(ip+12, ip_in, 4); + break; + case NET_IPV6: + memcpy(ip, ip_in, 16); + break; + default: + assert(!"invalid network"); + } +} + static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43}; bool CNetAddr::SetSpecial(const std::string &strName) @@ -571,13 +580,12 @@ CNetAddr::CNetAddr() CNetAddr::CNetAddr(const struct in_addr& ipv4Addr) { - memcpy(ip, pchIPv4, 12); - memcpy(ip+12, &ipv4Addr, 4); + SetRaw(NET_IPV4, (const uint8_t*)&ipv4Addr); } CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr) { - memcpy(ip, &ipv6Addr, 16); + SetRaw(NET_IPV6, (const uint8_t*)&ipv6Addr); } CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup) @@ -1122,3 +1130,138 @@ void CService::SetPort(unsigned short portIn) { port = portIn; } + +CSubNet::CSubNet(): + valid(false) +{ + memset(netmask, 0, sizeof(netmask)); +} + +CSubNet::CSubNet(const std::string &strSubnet, bool fAllowLookup) +{ + size_t slash = strSubnet.find_last_of('/'); + std::vector<CNetAddr> vIP; + + valid = true; + // Default to /32 (IPv4) or /128 (IPv6), i.e. match single address + memset(netmask, 255, sizeof(netmask)); + + std::string strAddress = strSubnet.substr(0, slash); + if (LookupHost(strAddress.c_str(), vIP, 1, fAllowLookup)) + { + network = vIP[0]; + if (slash != strSubnet.npos) + { + std::string strNetmask = strSubnet.substr(slash + 1); + int32_t n; + // IPv4 addresses start at offset 12, and first 12 bytes must match, so just offset n + int noffset = network.IsIPv4() ? (12 * 8) : 0; + if (ParseInt32(strNetmask, &n)) // If valid number, assume /24 symtex + { + if(n >= 0 && n <= (128 - noffset)) // Only valid if in range of bits of address + { + n += noffset; + // Clear bits [n..127] + for (; n < 128; ++n) + netmask[n>>3] &= ~(1<<(n&7)); + } + else + { + valid = false; + } + } + else // If not a valid number, try full netmask syntax + { + if (LookupHost(strNetmask.c_str(), vIP, 1, false)) // Never allow lookup for netmask + { + // Remember: GetByte returns bytes in reversed order + // Copy only the *last* four bytes in case of IPv4, the rest of the mask should stay 1's as + // we don't want pchIPv4 to be part of the mask. + int asize = network.IsIPv4() ? 4 : 16; + for(int x=0; x<asize; ++x) + netmask[15-x] = vIP[0].GetByte(x); + } + else + { + valid = false; + } + } + } + } + else + { + valid = false; + } +} + +bool CSubNet::Match(const CNetAddr &addr) const +{ + if (!valid || !addr.IsValid()) + return false; + for(int x=0; x<16; ++x) + if ((addr.GetByte(x) & netmask[15-x]) != network.GetByte(x)) + return false; + return true; +} + +std::string CSubNet::ToString() const +{ + std::string strNetmask; + if (network.IsIPv4()) + strNetmask = strprintf("%u.%u.%u.%u", netmask[12], netmask[13], netmask[14], netmask[15]); + else + strNetmask = strprintf("%x:%x:%x:%x:%x:%x:%x:%x", + netmask[0] << 8 | netmask[1], netmask[2] << 8 | netmask[3], + netmask[4] << 8 | netmask[5], netmask[6] << 8 | netmask[7], + netmask[8] << 8 | netmask[9], netmask[10] << 8 | netmask[11], + netmask[12] << 8 | netmask[13], netmask[14] << 8 | netmask[15]); + return network.ToString() + "/" + strNetmask; +} + +bool CSubNet::IsValid() const +{ + return valid; +} + +bool operator==(const CSubNet& a, const CSubNet& b) +{ + return a.valid == b.valid && a.network == b.network && !memcmp(a.netmask, b.netmask, 16); +} + +bool operator!=(const CSubNet& a, const CSubNet& b) +{ + return !(a==b); +} + +#ifdef WIN32 +std::string NetworkErrorString(int err) +{ + char buf[256]; + buf[0] = 0; + if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_MAX_WIDTH_MASK, + NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + buf, sizeof(buf), NULL)) + { + return strprintf("%s (%d)", buf, err); + } + else + { + return strprintf("Unknown error (%d)", err); + } +} +#else +std::string NetworkErrorString(int err) +{ + char buf[256]; + const char *s = buf; + buf[0] = 0; + /* Too bad there are two incompatible implementations of the + * thread-safe strerror. */ +#ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */ + s = strerror_r(err, buf, sizeof(buf)); +#else /* POSIX variant always returns message in buffer */ + (void) strerror_r(err, buf, sizeof(buf)); +#endif + return strprintf("%s (%d)", s, err); +} +#endif |