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