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# Net::Config.pm |
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# Copyright (C) 2000 Graham Barr. All rights reserved. |
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# Copyright (C) 2013-2014, 2016, 2020 Steve Hay. All rights reserved. |
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# This module is free software; you can redistribute it and/or modify it under |
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# the same terms as Perl itself, i.e. under the terms of either the GNU General |
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# Public License or the Artistic License, as specified in the F file. |
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package Net::Config; |
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use 5.008001; |
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use strict; |
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use warnings; |
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use Exporter; |
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use Socket qw(inet_aton inet_ntoa); |
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our @EXPORT = qw(%NetConfig); |
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our @ISA = qw(Net::LocalCfg Exporter); |
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our $VERSION = "3.15"; |
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our($CONFIGURE, $LIBNET_CFG); |
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eval { |
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local @INC = @INC; |
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pop @INC if $INC[-1] eq '.'; |
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local $SIG{__DIE__}; |
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require Net::LocalCfg; |
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}; |
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our %NetConfig = ( |
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nntp_hosts => [], |
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snpp_hosts => [], |
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pop3_hosts => [], |
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smtp_hosts => [], |
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ph_hosts => [], |
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daytime_hosts => [], |
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time_hosts => [], |
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inet_domain => undef, |
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ftp_firewall => undef, |
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ftp_ext_passive => 1, |
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ftp_int_passive => 1, |
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test_hosts => 1, |
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test_exist => 1, |
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); |
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# |
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# Try to get as much configuration info as possible from InternetConfig |
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# |
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{ |
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## no critic (BuiltinFunctions::ProhibitStringyEval) |
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$^O eq 'MacOS' and eval <
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use Mac::InternetConfig; |
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{ |
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my %nc = ( |
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nntp_hosts => [ \$InternetConfig{ kICNNTPHost() } ], |
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pop3_hosts => [ \$InternetConfig{ kICMailAccount() } =~ /\@(.*)/ ], |
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smtp_hosts => [ \$InternetConfig{ kICSMTPHost() } ], |
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ftp_testhost => \$InternetConfig{ kICFTPHost() } ? \$InternetConfig{ kICFTPHost()} : undef, |
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ph_hosts => [ \$InternetConfig{ kICPhHost() } ], |
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ftp_ext_passive => \$InternetConfig{"646F676F\xA5UsePassiveMode"} || 0, |
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ftp_int_passive => \$InternetConfig{"646F676F\xA5UsePassiveMode"} || 0, |
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socks_hosts => |
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\$InternetConfig{ kICUseSocks() } ? [ \$InternetConfig{ kICSocksHost() } ] : [], |
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ftp_firewall => |
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\$InternetConfig{ kICUseFTPProxy() } ? [ \$InternetConfig{ kICFTPProxyHost() } ] : [], |
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); |
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\@NetConfig{keys %nc} = values %nc; |
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} |
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TRY_INTERNET_CONFIG |
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} |
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my $file = __FILE__; |
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my $ref; |
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$file =~ s/Config.pm/libnet.cfg/; |
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if (-f $file) { |
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$ref = eval { local $SIG{__DIE__}; do $file }; |
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if (ref($ref) eq 'HASH') { |
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%NetConfig = (%NetConfig, %{$ref}); |
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$LIBNET_CFG = $file; |
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} |
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} |
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if ($< == $> and !$CONFIGURE) { |
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my $home = eval { local $SIG{__DIE__}; (getpwuid($>))[7] } || $ENV{HOME}; |
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$home ||= $ENV{HOMEDRIVE} . ($ENV{HOMEPATH} || '') if defined $ENV{HOMEDRIVE}; |
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if (defined $home) { |
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$file = $home . "/.libnetrc"; |
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$ref = eval { local $SIG{__DIE__}; do $file } if -f $file; |
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%NetConfig = (%NetConfig, %{$ref}) |
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if ref($ref) eq 'HASH'; |
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} |
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} |
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my ($k, $v); |
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while (($k, $v) = each %NetConfig) { |
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$NetConfig{$k} = [$v] |
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if ($k =~ /_hosts$/ and $k ne "test_hosts" and defined($v) and !ref($v)); |
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} |
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# Take a hostname and determine if it is inside the firewall |
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sub requires_firewall { |
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shift; # ignore package |
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my $host = shift; |
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return 0 unless defined $NetConfig{'ftp_firewall'}; |
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$host = inet_aton($host) or return -1; |
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$host = inet_ntoa($host); |
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if (exists $NetConfig{'local_netmask'}) { |
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my $quad = unpack("N", pack("C*", split(/\./, $host))); |
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my $list = $NetConfig{'local_netmask'}; |
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$list = [$list] unless ref($list); |
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foreach (@$list) { |
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my ($net, $bits) = (m#^(\d+\.\d+\.\d+\.\d+)/(\d+)$#) or next; |
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my $mask = ~0 << (32 - $bits); |
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my $addr = unpack("N", pack("C*", split(/\./, $net))); |
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return 0 if (($addr & $mask) == ($quad & $mask)); |
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} |
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return 1; |
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} |
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1
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return 0; |
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} |
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*is_external = \&requires_firewall; |
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1; |
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__END__ |