2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2005-2007 Craig Edwards <craigedwards@brainbox.cc>
6 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
7 * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
8 * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
9 * Copyright (C) 2006 William Pitcock <nenolod@dereferenced.org>
11 * This file is part of InspIRCd. InspIRCd is free software: you can
12 * redistribute it and/or modify it under the terms of the GNU General Public
13 * License as published by the Free Software Foundation, version 2.
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
29 #include <arpa/inet.h>
31 #include <sys/resource.h>
32 #include <sys/types.h>
33 #include <sys/socket.h>
35 #include <netinet/in.h>
42 #include "inspircd_win32wrapper.h"
48 /* Contains irc-specific definitions */
51 /** This namespace contains various protocol-independent helper classes.
52 * It also contains some types which are often used by the core and modules
53 * in place of inet_* functions and types.
57 union CoreExport sockaddrs
60 struct sockaddr_in in4;
61 struct sockaddr_in6 in6;
62 /** Return the size of the structure for syscall passing */
64 /** Return port number or -1 if invalid */
67 std::string addr() const;
68 /** Return human-readable IP/port pair */
69 std::string str() const;
70 bool operator==(const sockaddrs& other) const;
71 inline bool operator!=(const sockaddrs& other) const { return !(*this == other); }
74 struct CoreExport cidr_mask
76 /** Type, AF_INET or AF_INET6 */
78 /** Length of the mask in bits (0-128) */
80 /** Raw bits. Unused bits must be zero */
81 unsigned char bits[16];
84 /** Construct a CIDR mask from the string. Will normalize (127.0.0.1/8 => 127.0.0.0/8). */
85 cidr_mask(const std::string& mask);
86 /** Construct a CIDR mask of a given length from the given address */
87 cidr_mask(const irc::sockets::sockaddrs& addr, int len);
88 /** Equality of bits, type, and length */
89 bool operator==(const cidr_mask& other) const;
90 /** Ordering defined for maps */
91 bool operator<(const cidr_mask& other) const;
92 /** Match within this CIDR? */
93 bool match(const irc::sockets::sockaddrs& addr) const;
94 /** Human-readable string */
95 std::string str() const;
98 /** Match CIDR, including an optional username/nickname part.
100 * This function will compare a human-readable address (plus
101 * optional username and nickname) against a human-readable
102 * CIDR mask, for example joe!bloggs\@1.2.3.4 against
103 * *!bloggs\@1.2.0.0/16. This method supports both IPV4 and
105 * @param address The human readable address, e.g. fred\@1.2.3.4
106 * @param cidr_mask The human readable mask, e.g. *\@1.2.0.0/16
107 * @param match_with_username Does the mask include a nickname segment?
108 * @return True if the mask matches the address
110 CoreExport bool MatchCIDR(const std::string &address, const std::string &cidr_mask, bool match_with_username);
112 /** Return the size of the structure for syscall passing */
113 inline int sa_size(const irc::sockets::sockaddrs& sa) { return sa.sa_size(); }
115 /** Convert an address-port pair into a binary sockaddr
116 * @param addr The IP address, IPv4 or IPv6
117 * @param port The port, 0 for unspecified
118 * @param sa The structure to place the result in. Will be zeroed prior to conversion
119 * @return true if the conversion was successful, false if not.
121 CoreExport bool aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa);
123 /** Convert a binary sockaddr to an address-port pair
124 * @param sa The structure to convert
125 * @param addr the IP address
126 * @param port the port
127 * @return true if the conversion was successful, false if unknown address family
129 CoreExport bool satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port);
131 /** Convert a binary sockaddr to a user-readable string.
132 * This means IPv6 addresses are written as [::1]:6667, and *:6668 is used for 0.0.0.0:6668
133 * @param sa The structure to convert
134 * @return The string; "<unknown>" if not a valid address
136 inline std::string satouser(const irc::sockets::sockaddrs& sa) { return sa.str(); }
140 #include "socketengine.h"
141 /** This class handles incoming connections on client ports.
142 * It will create a new User for every valid connection
143 * and assign it a file descriptor.
145 class CoreExport ListenSocket : public EventHandler
148 reference<ConfigTag> bind_tag;
149 std::string bind_addr;
151 /** Human-readable bind description */
152 std::string bind_desc;
153 /** Create a new listening socket
155 ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_to);
156 /** Handle an I/O event
158 void HandleEvent(EventType et, int errornum = 0);
163 /** Handles sockets internals crap of a connection, convenience wrapper really
165 void AcceptInternal();