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>
36 #include <netinet/in.h>
43 #include "inspircd_win32wrapper.h"
49 /* Contains irc-specific definitions */
52 /** This namespace contains various protocol-independent helper classes.
53 * It also contains some types which are often used by the core and modules
54 * in place of inet_* functions and types.
58 union CoreExport sockaddrs
61 struct sockaddr_in in4;
62 struct sockaddr_in6 in6;
63 struct sockaddr_un un;
64 /** Return the family of the socket (e.g. AF_INET). */
66 /** Return the size of the structure for syscall passing */
67 socklen_t sa_size() const;
68 /** Return port number or -1 if invalid */
71 std::string addr() const;
72 /** Return human-readable IP/port pair */
73 std::string str() const;
74 bool operator==(const sockaddrs& other) const;
75 inline bool operator!=(const sockaddrs& other) const { return !(*this == other); }
78 struct CoreExport cidr_mask
80 /** Type, AF_INET or AF_INET6 */
82 /** Length of the mask in bits (0-128) */
84 /** Raw bits. Unused bits must be zero */
85 unsigned char bits[16];
88 /** Construct a CIDR mask from the string. Will normalize (127.0.0.1/8 => 127.0.0.0/8). */
89 cidr_mask(const std::string& mask);
90 /** Construct a CIDR mask of a given length from the given address */
91 cidr_mask(const irc::sockets::sockaddrs& addr, unsigned char len);
92 /** Equality of bits, type, and length */
93 bool operator==(const cidr_mask& other) const;
94 /** Ordering defined for maps */
95 bool operator<(const cidr_mask& other) const;
96 /** Match within this CIDR? */
97 bool match(const irc::sockets::sockaddrs& addr) const;
98 /** Human-readable string */
99 std::string str() const;
102 /** Match CIDR, including an optional username/nickname part.
104 * This function will compare a human-readable address (plus
105 * optional username and nickname) against a human-readable
106 * CIDR mask, for example joe!bloggs\@1.2.3.4 against
107 * *!bloggs\@1.2.0.0/16. This method supports both IPV4 and
109 * @param address The human readable address, e.g. fred\@1.2.3.4
110 * @param cidr_mask The human readable mask, e.g. *\@1.2.0.0/16
111 * @param match_with_username Does the mask include a nickname segment?
112 * @return True if the mask matches the address
114 CoreExport bool MatchCIDR(const std::string &address, const std::string &cidr_mask, bool match_with_username);
116 /** Convert an address-port pair into a binary sockaddr
117 * @param addr The IP address, IPv4 or IPv6
118 * @param port The port, 0 for unspecified
119 * @param sa The structure to place the result in. Will be zeroed prior to conversion
120 * @return true if the conversion was successful, false if not.
122 CoreExport bool aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa);
126 /** A list of failed port bindings, used for informational purposes on startup */
127 typedef std::vector<std::pair<irc::sockets::sockaddrs, int> > FailedPortList;
129 #include "socketengine.h"
130 /** This class handles incoming connections on client ports.
131 * It will create a new User for every valid connection
132 * and assign it a file descriptor.
134 class CoreExport ListenSocket : public EventHandler
137 reference<ConfigTag> bind_tag;
138 const irc::sockets::sockaddrs bind_sa;
140 class IOHookProvRef : public dynamic_reference_nocheck<IOHookProvider>
144 : dynamic_reference_nocheck<IOHookProvider>(NULL, std::string())
149 typedef TR1NS::array<IOHookProvRef, 2> IOHookProvList;
151 /** IOHook providers for handling connections on this socket,
154 IOHookProvList iohookprovs;
156 /** Create a new listening socket
158 ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_to);
163 /** Handles new connections, called by the socket engine
165 void OnEventHandlerRead() CXX11_OVERRIDE;
167 /** Inspects the bind block belonging to this socket to set the name of the IO hook
168 * provider which this socket will use for incoming connections.
170 void ResetIOHookProvider();