Edit File: Socket6.pm
# Copyright (C) 2000-2008 Hajimu UMEMOTO <ume@mahoroba.org>. # All rights reserved. # # This module is besed on perl5.005_55-v6-19990721 written by KAME # Project. # # Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. Neither the name of the project nor the names of its contributors # may be used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # $Id: Socket6.pm,v 1.45 2008/11/01 19:08:39 ume Exp $ package Socket6; use strict; use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $AUTOLOAD); $VERSION = "0.23"; =head1 NAME Socket6 - IPv6 related part of the C socket.h defines and structure manipulators =head1 SYNOPSIS use Socket; use Socket6; @res = getaddrinfo('hishost.com', 'daytime', AF_UNSPEC, SOCK_STREAM); $family = -1; while (scalar(@res) >= 5) { ($family, $socktype, $proto, $saddr, $canonname, @res) = @res; ($host, $port) = getnameinfo($saddr, NI_NUMERICHOST | NI_NUMERICSERV); print STDERR "Trying to connect to $host port port $port...\n"; socket(Socket_Handle, $family, $socktype, $proto) || next; connect(Socket_Handle, $saddr) && last; close(Socket_Handle); $family = -1; } if ($family != -1) { print STDERR "connected to $host port port $port\n"; } else { die "connect attempt failed\n"; } =head1 DESCRIPTION This module provides glue routines to the various IPv6 functions. If you use the Socket6 module, be sure to specify "use Socket" as well as "use Socket6". Functions supplied are: =item inet_pton FAMILY, TEXT_ADDRESS This function takes an IP address in presentation (or string) format and converts it into numeric (or binary) format. The type of IP address conversion (IPv4 versus IPv6) is controlled by the FAMILY argument. =item inet_ntop FAMILY, BINARY_ADDRESS This function takes an IP address in numeric (or binary) format and converts it into presentation (or string) format The type of IP address conversion (IPv4 versus IPv6) is controlled by the FAMILY argument. =item pack_sockaddr_in6 PORT, ADDR This function takes two arguments: a port number, and a 16-octet IPv6 address structure (as returned by inet_pton()). It returns the sockaddr_in6 structure with these arguments packed into their correct fields, as well as the AF_INET6 family. The other fields are not set and their values should not be relied upon. =item pack_sockaddr_in6_all PORT, FLOWINFO, ADDR, SCOPEID This function takes four arguments: a port number, a 16-octet IPv6 address structure (as returned by inet_pton), any special flow information, and any specific scope information. It returns a complete sockaddr_in6 structure with these arguments packed into their correct fields, as well as the AF_INET6 family. =item unpack_sockaddr_in6 NAME This function takes a sockaddr_in6 structure (as returned by pack_sockaddr_in6()) and returns a list of of two elements: the port number and the 16-octet IP address. This function will croak if it determines it has not been passed an IPv6 structure. =item unpack_sockaddr_in6_all NAME This function takes a sockaddr_in6 structure (as returned by pack_sockaddr_in6()) and returns a list of of four elements: the port number, the flow information, the 16-octet IP address, and the scope information. This function will croak if it determines it has not been passed an IPv6 structure. =item gethostbyname2 HOSTNAME, FAMILY =item getaddrinfo NODENAME, SERVICENAME, [FAMILY, SOCKTYPE, PROTOCOL, FLAGS] This function converts node names to addresses and service names to port numbers. If the NODENAME argument is not a false value, then a nodename to address lookup is performed; otherwise a service name to port number lookup is performed. At least one of NODENAME and SERVICENAME must have a true value. If the lookup is successful, a list consisting of multiples of five elements is returned. Each group of five elements consists of the address family, socket type, protocol, 16-octet IP address, and the canonical name (undef if the node name passed is already the canonical name). The arguments FAMILY, SOCKTYPE, PROTOCOL, and FLAGS are all optional. This function will croak if it determines it has not been passed an IPv6 structure. If the lookup is unsuccessful, the function returns a single scalar. This will contain the string version of that error in string context, and the numeric value in numeric context. =item getnameinfo NAME, [FLAGS] This function takes a socket address structure. If successful, it returns two strings containing the node name and service name. The optional FLAGS argument controls what kind of lookup is performed. If the lookup is unsuccessful, the function returns a single scalar. This will contain the string version of that error in string context, and the numeric value in numeric context. =item getipnodebyname HOST, [FAMILY, FLAGS] This function takes either a node name or an IP address string and performs a lookup on that name (or conversion of the string). It returns a list of five elements: the canonical host name, the address family, the length in octets of the IP addresses returned, a reference to a list of IP address structures, and a reference to a list of aliases for the host name. The arguments FAMILY and FLAGS are optional. Note: This function does not handle IPv6 scope identifiers, and should be used with care. And, this function was deprecated in RFC3493. The getnameinfo function should be used instead. =item getipnodebyaddr FAMILY, ADDRESS This function takes an IP address family and an IP address structure and performs a reverse lookup on that address. It returns a list of five elements: the canonical host name, the address family, the length in octets of the IP addresses returned, a reference to a list of IP address structures, and a reference to a list of aliases for the host name. Note: This function does not handle IPv6 scope identifiers, and should be used with care. And, this function was deprecated in RFC3493. The getaddrinfo function should be used instead. =item gai_strerror ERROR_NUMBER This function returns a string corresponding to the error number passed in as an argument. =item in6addr_any This function returns the 16-octet wildcard address. =item in6add_loopback This function returns the 16-octet loopback address. =over =back =cut use Carp; use base qw(Exporter DynaLoader); @EXPORT = qw( inet_pton inet_ntop pack_sockaddr_in6 pack_sockaddr_in6_all unpack_sockaddr_in6 unpack_sockaddr_in6_all sockaddr_in6 gethostbyname2 getaddrinfo getnameinfo in6addr_any in6addr_loopback gai_strerror getipnodebyname getipnodebyaddr AI_ADDRCONFIG AI_ALL AI_CANONNAME AI_NUMERICHOST AI_NUMERICSERV AI_DEFAULT AI_MASK AI_PASSIVE AI_V4MAPPED AI_V4MAPPED_CFG EAI_ADDRFAMILY EAI_AGAIN EAI_BADFLAGS EAI_FAIL EAI_FAMILY EAI_MEMORY EAI_NODATA EAI_NONAME EAI_SERVICE EAI_SOCKTYPE EAI_SYSTEM EAI_BADHINTS EAI_PROTOCOL IP_AUTH_TRANS_LEVEL IP_AUTH_NETWORK_LEVEL IP_ESP_TRANS_LEVEL IP_ESP_NETWORK_LEVEL IPPROTO_IP IPPROTO_IPV6 IPSEC_LEVEL_AVAIL IPSEC_LEVEL_BYPASS IPSEC_LEVEL_DEFAULT IPSEC_LEVEL_NONE IPSEC_LEVEL_REQUIRE IPSEC_LEVEL_UNIQUE IPSEC_LEVEL_USE IPV6_AUTH_TRANS_LEVEL IPV6_AUTH_NETWORK_LEVEL IPV6_ESP_NETWORK_LEVEL IPV6_ESP_TRANS_LEVEL NI_NOFQDN NI_NUMERICHOST NI_NAMEREQD NI_NUMERICSERV NI_DGRAM NI_WITHSCOPEID ); push @EXPORT, qw(AF_INET6) unless defined eval {Socket::AF_INET6()}; push @EXPORT, qw(PF_INET6) unless defined eval {Socket::PF_INET6()}; @EXPORT_OK = qw(AF_INET6 PF_INET6); %EXPORT_TAGS = ( all => [@EXPORT], ); sub sockaddr_in6 { if (wantarray) { croak "usage: (port,iaddr) = sockaddr_in6(sin_sv)" unless @_ == 1; unpack_sockaddr_in6(@_); } else { croak "usage: sin_sv = sockaddr_in6(port,iaddr))" unless @_ == 2; pack_sockaddr_in6(@_); } } sub AUTOLOAD { my($constname); ($constname = $AUTOLOAD) =~ s/.*:://o; $! = 0; my $val = constant($constname, @_ ? $_[0] : 0); if ($! != 0) { croak "Your vendor has not defined Socket macro $constname, used"; } eval "sub $AUTOLOAD { $val }"; goto &$AUTOLOAD; } bootstrap Socket6 $VERSION; 1;