1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #ifndef INSPIRCD_SOCKET_H
15 #define INSPIRCD_SOCKET_H
19 #include <arpa/inet.h>
21 #include <sys/resource.h>
22 #include <sys/types.h>
23 #include <sys/socket.h>
25 #include <netinet/in.h>
32 #include "inspircd_win32wrapper.h"
37 #include "socketengine.h"
39 /* Contains irc-specific definitions */
42 /** This namespace contains various protocol-independent helper classes.
43 * It also contains some types which are often used by the core and modules
44 * in place of inet_* functions and types.
48 union CoreExport sockaddrs {
50 struct sockaddr_in in4;
51 struct sockaddr_in6 in6;
52 /** Return the size of the structure for syscall passing */
54 /** Return port number or -1 if invalid */
57 std::string addr() const;
58 /** Return human-readable IP/port pair */
59 std::string str() const;
64 /** Type, AF_INET or AF_INET6 */
66 /** Length of the mask in bits (0-128) */
68 /** Raw bits. Unused bits must be zero */
69 unsigned char bits[16];
72 /** Construct a CIDR mask from the string. Will normalize (127.0.0.1/8 => 127.0.0.0/8). */
73 cidr_mask(const std::string& mask);
74 /** Construct a CIDR mask of a given length from the given address */
75 cidr_mask(const irc::sockets::sockaddrs& addr, int len);
76 /** Equality of bits, type, and length */
77 bool operator==(const cidr_mask& other) const;
78 /** Ordering defined for maps */
79 bool operator<(const cidr_mask& other) const;
80 /** Match within this CIDR? */
81 bool match(const irc::sockets::sockaddrs& addr) const;
82 /** Human-readable string */
83 std::string str() const;
86 /** Match CIDR, including an optional username/nickname part.
88 * This function will compare a human-readable address (plus
89 * optional username and nickname) against a human-readable
90 * CIDR mask, for example joe!bloggs\@1.2.3.4 against
91 * *!bloggs\@1.2.0.0/16. This method supports both IPV4 and
93 * @param address The human readable address, e.g. fred\@1.2.3.4
94 * @param cidr_mask The human readable mask, e.g. *\@1.2.0.0/16
95 * @return True if the mask matches the address
97 CoreExport bool MatchCIDR(const std::string &address, const std::string &cidr_mask, bool match_with_username);
99 /** Return the size of the structure for syscall passing */
100 inline int sa_size(const irc::sockets::sockaddrs& sa) { return sa.sa_size(); }
102 /** Convert an address-port pair into a binary sockaddr
103 * @param addr The IP address, IPv4 or IPv6
104 * @param port The port, 0 for unspecified
105 * @param sa The structure to place the result in. Will be zeroed prior to conversion
106 * @return true if the conversion was successful, false if not.
108 CoreExport bool aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa);
110 /** Convert a binary sockaddr to an address-port pair
111 * @param sa The structure to convert
112 * @param addr the IP address
113 * @param port the port
114 * @return true if the conversion was successful, false if unknown address family
116 CoreExport bool satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port);
118 /** Convert a binary sockaddr to a user-readable string.
119 * This means IPv6 addresses are written as [::1]:6667, and *:6668 is used for 0.0.0.0:6668
120 * @param sa The structure to convert
121 * @return The string; "<unknown>" if not a valid address
123 inline std::string satouser(const irc::sockets::sockaddrs& sa) { return sa.str(); }
127 /** This class handles incoming connections on client ports.
128 * It will create a new User for every valid connection
129 * and assign it a file descriptor.
131 class CoreExport ListenSocket : public EventHandler
134 const reference<ConfigTag> bind_tag;
135 std::string bind_addr;
137 /** Human-readable bind description */
138 std::string bind_desc;
139 /** Create a new listening socket
141 ListenSocket(ConfigTag* tag, const std::string& addr, int port);
142 /** Handle an I/O event
144 void HandleEvent(EventType et, int errornum = 0);
149 /** Handles sockets internals crap of a connection, convenience wrapper really
151 void AcceptInternal();