// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*- // Copyright (c) 2001-2009 XORP, Inc. // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License, Version 2, June // 1991 as published by the Free Software Foundation. Redistribution // and/or modification of this program under the terms of any other // version of the GNU General Public License is not permitted. // // 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. For more details, // see the GNU General Public License, Version 2, a copy of which can be // found in the XORP LICENSE.gpl file. // // XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA; // http://xorp.net // $XORP: xorp/bgp/iptuple.hh,v 1.17 2009/01/05 18:30:43 jtc Exp $ #ifndef __BGP_IPTUPLE_HH__ #define __BGP_IPTUPLE_HH__ #include "bgp_module.h" #include "libxorp/xorp.h" #include "libxorp/xlog.h" #include "libxorp/ipvx.hh" class UnresolvableHost : public XorpReasonedException { public: UnresolvableHost(const char* file, size_t line, const string init_why = "") : XorpReasonedException("UnresolvableHost", file, line, init_why) {} }; class AddressFamilyMismatch : public XorpReasonedException { public: AddressFamilyMismatch(const char* file, size_t line, const string init_why = "") : XorpReasonedException("AddressFamilyMismatch", file, line, init_why) {} }; /** * Store the Local Interface, Local Server Port, Peer Interface and * Peer Server Port tuple. * * Also create the socket buffers to be used by the socket code. All the IP * protocol family differences can therefore be hidden in here. * * The endpoint addresses can be presented as either numeric addresses * or symbolic addresses. Symbolic addresses are converted to numeric * addresses and held as such. The symbolic address are kept to aid * debugging but are never accessed after the initial conversion to * the numeric form. Only in the constructor is there a possibility of * a DNS / Yellow pages interaction taking place. After this as we are * dealing with IP addresses there should be no danger. */ class Iptuple { public: Iptuple(); Iptuple(const char *local_interface, uint16_t local_port, const char *peer_interface, uint16_t peer_port) throw(UnresolvableHost,AddressFamilyMismatch); Iptuple(const Iptuple&); Iptuple& operator=(const Iptuple&); void copy(const Iptuple&); bool operator==(const Iptuple&) const; const struct sockaddr *get_local_socket(size_t& len) const; string get_local_addr() const; bool get_local_addr(IPv4& addr) const; bool get_local_addr(IPv6& addr) const; uint16_t get_local_port() const; const struct sockaddr *get_bind_socket(size_t& len) const; const struct sockaddr *get_peer_socket(size_t& len) const; string get_peer_addr() const; bool get_peer_addr(IPv4& addr) const; bool get_peer_addr(IPv6& addr) const; uint16_t get_peer_port() const; string str() const; private: void fill_address(const char *interface, uint16_t local_port, struct sockaddr_storage& ss, size_t& len, string& interface_numeric) throw(UnresolvableHost); string _local_interface; // String representation only for debugging. string _peer_interface; // String representation only for debugging. // For listen(). struct sockaddr_storage _local_sock; // Local socket size_t _local_sock_len; // Length of local socket // For bind() before connect. struct sockaddr_storage _bind_sock; // Bind socket size_t _bind_sock_len; // Length of bind socket // For connect(). struct sockaddr_storage _peer_sock; // Peer socket size_t _peer_sock_len; // Length of peer socket /* ** The local address and the peer address are stored twice once in ** string format and one in IPvX format. Originally the addresses ** were stored only as strings as they are rarely used, however ** the policy code may repeatedly request the peer address in IPv4 ** or IPv6 format so keep it in the internal format for ** performance reasons. */ string _local_address; // Local address in numeric form IPvX _local_address_ipvx; // Local address in IPvX form string _peer_address; // Peer address in numeric form IPvX _peer_address_ipvx; // Peer address in IPvX form /* ** Held in host byte order */ uint16_t _local_port; // Local port uint16_t _peer_port; // Peer port }; #endif // __BGP_IPTUPLE_HH__