/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2005-2007 Craig Edwards * Copyright (C) 2007 Dennis Friis * Copyright (C) 2007 Robin Burchell * Copyright (C) 2006 Oliver Lupton * Copyright (C) 2006 William Pitcock * * This file is part of InspIRCd. InspIRCd 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, version 2. * * This program 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 this program. If not, see . */ #ifndef INSPIRCD_SOCKET_H #define INSPIRCD_SOCKET_H #ifndef WIN32 #include #include #include #include #include #include #include #include #include #include #else #include "inspircd_win32wrapper.h" #endif #include /* Contains irc-specific definitions */ namespace irc { /** This namespace contains various protocol-independent helper classes. * It also contains some types which are often used by the core and modules * in place of inet_* functions and types. */ namespace sockets { union CoreExport sockaddrs { struct sockaddr sa; struct sockaddr_in in4; struct sockaddr_in6 in6; /** Return the size of the structure for syscall passing */ int sa_size() const; /** Return port number or -1 if invalid */ int port() const; /** Return IP only */ std::string addr() const; /** Return human-readable IP/port pair */ std::string str() const; bool operator==(const sockaddrs& other) const; inline bool operator!=(const sockaddrs& other) const { return !(*this == other); } }; struct CoreExport cidr_mask { /** Type, AF_INET or AF_INET6 */ unsigned char type; /** Length of the mask in bits (0-128) */ unsigned char length; /** Raw bits. Unused bits must be zero */ unsigned char bits[16]; cidr_mask() {} /** Construct a CIDR mask from the string. Will normalize (127.0.0.1/8 => 127.0.0.0/8). */ cidr_mask(const std::string& mask); /** Construct a CIDR mask of a given length from the given address */ cidr_mask(const irc::sockets::sockaddrs& addr, int len); /** Equality of bits, type, and length */ bool operator==(const cidr_mask& other) const; /** Ordering defined for maps */ bool operator<(const cidr_mask& other) const; /** Match within this CIDR? */ bool match(const irc::sockets::sockaddrs& addr) const; /** Human-readable string */ std::string str() const; }; /** Match CIDR, including an optional username/nickname part. * * This function will compare a human-readable address (plus * optional username and nickname) against a human-readable * CIDR mask, for example joe!bloggs\@1.2.3.4 against * *!bloggs\@1.2.0.0/16. This method supports both IPV4 and * IPV6 addresses. * @param address The human readable address, e.g. fred\@1.2.3.4 * @param cidr_mask The human readable mask, e.g. *\@1.2.0.0/16 * @param match_with_username Does the mask include a nickname segment? * @return True if the mask matches the address */ CoreExport bool MatchCIDR(const std::string &address, const std::string &cidr_mask, bool match_with_username); /** Return the size of the structure for syscall passing */ inline int sa_size(const irc::sockets::sockaddrs& sa) { return sa.sa_size(); } /** Convert an address-port pair into a binary sockaddr * @param addr The IP address, IPv4 or IPv6 * @param port The port, 0 for unspecified * @param sa The structure to place the result in. Will be zeroed prior to conversion * @return true if the conversion was successful, false if not. */ CoreExport bool aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa); /** Convert a binary sockaddr to an address-port pair * @param sa The structure to convert * @param addr the IP address * @param port the port * @return true if the conversion was successful, false if unknown address family */ CoreExport bool satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port); /** Convert a binary sockaddr to a user-readable string. * This means IPv6 addresses are written as [::1]:6667, and *:6668 is used for 0.0.0.0:6668 * @param sa The structure to convert * @return The string; "" if not a valid address */ inline std::string satouser(const irc::sockets::sockaddrs& sa) { return sa.str(); } } } #include "socketengine.h" /** This class handles incoming connections on client ports. * It will create a new User for every valid connection * and assign it a file descriptor. */ class CoreExport ListenSocket : public EventHandler { public: const reference bind_tag; std::string bind_addr; int bind_port; /** Human-readable bind description */ std::string bind_desc; /** Create a new listening socket */ ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_to); /** Handle an I/O event */ void HandleEvent(EventType et, int errornum = 0); /** Close the socket */ ~ListenSocket(); /** Handles sockets internals crap of a connection, convenience wrapper really */ void AcceptInternal(); }; #endif