/* This file is part of cpp-ethereum. cpp-ethereum is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. cpp-ethereum is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with cpp-ethereum. If not, see . */ /** @file Common.cpp * @author Gav Wood * @date 2014 */ #include "Common.h" using namespace std; using namespace dev; using namespace dev::p2p; // Helper function to determine if an address falls within one of the reserved ranges // For V4: // Class A "10.*", Class B "172.[16->31].*", Class C "192.168.*" bool p2p::isPrivateAddress(bi::address const& _addressToCheck) { if (_addressToCheck.is_v4()) { bi::address_v4 v4Address = _addressToCheck.to_v4(); bi::address_v4::bytes_type bytesToCheck = v4Address.to_bytes(); if (bytesToCheck[0] == 10 || bytesToCheck[0] == 127) return true; if (bytesToCheck[0] == 172 && (bytesToCheck[1] >= 16 && bytesToCheck[1] <= 31)) return true; if (bytesToCheck[0] == 192 && bytesToCheck[1] == 168) return true; } else if (_addressToCheck.is_v6()) { bi::address_v6 v6Address = _addressToCheck.to_v6(); bi::address_v6::bytes_type bytesToCheck = v6Address.to_bytes(); if (bytesToCheck[0] == 0xfd && bytesToCheck[1] == 0) return true; if (!bytesToCheck[0] && !bytesToCheck[1] && !bytesToCheck[2] && !bytesToCheck[3] && !bytesToCheck[4] && !bytesToCheck[5] && !bytesToCheck[6] && !bytesToCheck[7] && !bytesToCheck[8] && !bytesToCheck[9] && !bytesToCheck[10] && !bytesToCheck[11] && !bytesToCheck[12] && !bytesToCheck[13] && !bytesToCheck[14] && (bytesToCheck[15] == 0 || bytesToCheck[15] == 1)) return true; } return false; } // Helper function to determine if an address is localhost bool p2p::isLocalHostAddress(bi::address const& _addressToCheck) { // @todo: ivp6 link-local adresses (macos), ex: fe80::1%lo0 static const set c_rejectAddresses = { {bi::address_v4::from_string("127.0.0.1")}, {bi::address_v4::from_string("0.0.0.0")}, {bi::address_v6::from_string("::1")}, {bi::address_v6::from_string("::")} }; return find(c_rejectAddresses.begin(), c_rejectAddresses.end(), _addressToCheck) != c_rejectAddresses.end(); } std::string p2p::reasonOf(DisconnectReason _r) { switch (_r) { case DisconnectRequested: return "Disconnect was requested."; case TCPError: return "Low-level TCP communication error."; case BadProtocol: return "Data format error."; case UselessPeer: return "Peer had no use for this node."; case TooManyPeers: return "Peer had too many connections."; case DuplicatePeer: return "Peer was already connected."; case IncompatibleProtocol: return "Peer protocol versions are incompatible."; case NullIdentity: return "Null identity given."; case ClientQuit: return "Peer is exiting."; case UnexpectedIdentity: return "Unexpected identity given."; case LocalIdentity: return "Connected to ourselves."; case UserReason: return "Subprotocol reason."; case NoDisconnect: return "(No disconnect has happened.)"; default: return "Unknown reason."; } }