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#!/usr/bin/perl -w
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# mixmaster-update: (c) 2002 Peter Palfrader <peter@palfrader.org>
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# $Id: mixmaster-update 459 2007-11-21 10:12:30Z weasel $
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#
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# This program is free software. you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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=pod
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=head1 NAME
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mixmaster-update - Fetch new reliability stats and keyrings for mixmaster
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=head1 SYNOPSIS
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=over
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=item B<mixmaster-update> [B<--verbose>] [B<--source>=I<SOURCE>] [B<--configfile>=I<FILE>] [B<--destination>=I<DIRECTORY>]
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=item B<mixmaster-update> B<--list-sources>
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=item B<mixmaster-update> B<--help>
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=item B<mixmaster-update> B<--version>
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=back
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=head1 DESCRIPTION
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B<mixmaster-update> is a simple yet configurable script that downloads latest
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remailer reliability statistics and keyrings for your mixmaster.
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As having uptodate reliability statistics is imperative if you want to make use
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of remailers it is recommended that you always update this data should it be
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older that twelve or twentyfour hours and you intent to use mixmaster.
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B<mixmaster-update> has several built in stats sources. You can view the list
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of stats sources with the B<--list-sources> parameter.
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If you want to make use of another stats source which is not listed in the output
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of B<--list-sources> you can do so by setting the location of B<mlist> and others
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in your configuration file.
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=head1 OPTIONS
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=over
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=item B<--verbose>
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Print verbose output to standard output. May be given more than once to increase verbosity.
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=item B<--source>=I<SOURCE>
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Use this built in stats source.
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=item B<--configfile>=I<FILE>
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Also parse the configuration file I<FILE>.
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=item B<--destination>=I<DIRECTORY>
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Write output to I<DIRECTORY> rather than the directory given in the config file
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or ~/.Mix/.
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=item B<--list-sources>
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List available stats sources.
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=item B<--help>
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Print a brief help message and exit successfully.
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=item B<--version>
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Print a version information and exit successfully.
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=back
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=head1 FILES
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=over
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=item B</etc/mixmaster/update.conf>
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=item B<~/.Mix/update.conf>
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=item MIXMASTER_UPDATE_CONF environment
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=item B<--configfile> parameter
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=back
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These files are parsed in this order. Later definitions overwrite older ones.
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This config file defines proxy settings, where to write the results to and
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which stats source to use
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=over
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=item B</etc/mixmaster/allpingers.txt>
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=item B<~/.Mix/allpingers.txt>
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=item MIXMASTER_ALLPINGERS environment
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=item B<--allpingers> parameter
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=back
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These files are parsed in this order. Later definitions overwrite older ones.
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The B<allpingers.txt> is a list of all pingers.
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=head1 FILEFORMAT
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The B<update.conf> configuration file for B<mixmaster-update> is simple. Lines
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with whitespace only are ignored as are lines that have the hash our pound
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(C<#>) sign as their first non whitespace character.
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Lines are always truncated at the first hash our pound (C<#>) sign.
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Lines are pairs of keys and values seperated by a convenient amount of
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whitespace. The key is case insensitive.
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Allowed keys:
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=over
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=item B<source>
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Use the builtin stats source with this name
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=item B<destination>
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Write the downloaded data to this directory rather than ~/.Mix
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=item B<proxy>
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Set proxies for different protocols. The value is split into two parts:
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protocol and proxy URL. They are seperated by whitespace.
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Example:
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PROXY http http://proxy.example.com:8080/
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PROXY ftp http://proxy.example.com:8080/
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=back
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The format for B<allpingers.txt> is simple too:
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[example]
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base = http://stats.example.net/
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rlist = http://stats.example.net/rlist.txt
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mlist = http://stats.example.net/mlist.txt
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rlist2 = http://stats.example.net/rlist2.txt
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mlist2 = http://stats.example.net/mlist2.txt
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rlist_html = http://stats.example.net/rlist.html
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mlist_html = http://stats.example.net/mlist.html
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rlist2_html = http://stats.example.net/rlist2.html
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mlist2_html = http://stats.example.net/mlist2.html
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rchain_html = http://stats.example.net/mlist2.html
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pgpring = http://stats.example.net/pgp-all.asc
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pgpring_rsa = http://stats.example.net/pgp-rsa.asc
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mixring = http://stats.example.net/pubring.mix
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type2list = http://stats.example.net/type2.list
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The file may contain several such definitions.
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=head1 ENVIRONMENT
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=over
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=item MIXMASTER_UPDATE_CONF
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=item MIXMASTER_ALLPINGERS
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See the FILES section abobe.
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=item HOME
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Your homedirectory. Used for finding your user configuration file. Also the
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default destination directory is $HOME/.Mix/
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=back
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=head1 SEE ALSO
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B<mixmaster>(1)
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=head1 BUGS
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Please report them to the Debian Bug Tracking System as described at
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C<http://bugs.debian.org/> or use a tool like reportbug(1).
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=head1 AUTHOR
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Peter Palfrader E<lt>peter@palfrader.orgE<gt>
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=cut
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use strict;
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use Getopt::Long;
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use English;
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use POSIX qw(:errno_h);
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my $VERSION = '$Revision: 459 $';
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my %SOURCES;
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my %DESTINATION_FILES = (
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rlist => 'rlist.txt',
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mlist => 'mlist.txt',
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rlist2 => 'rlist2.txt',
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mlist2 => 'mlist2.txt',
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mixring => 'pubring.mix',
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pgpring => 'pubring.asc' );
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my @configfiles = ( '/etc/mixmaster/update.conf',
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$ENV{'HOME'}.'/.Mix/update.conf');
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my @sourcesfiles = ( '/etc/mixmaster/allpingers.txt',
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$ENV{'HOME'}.'/.Mix/allpingers.txt');
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my $destination = $ENV{'HOME'}.'/.Mix/';
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my $params;
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Getopt::Long::config('bundling');
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if (!GetOptions (
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'help' => \$params->{'help'},
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'version' => \$params->{'version'},
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'verbose+' => \$params->{'verbose'},
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'configfile=s' => \$params->{'conffile'},
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'allpingers=s' => \$params->{'allpingers'},
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'source=s' => \$params->{'source'},
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'list-sources' => \$params->{'list-sources'},
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'destination=s'=> \$params->{'destination'},
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)) {
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die ("$PROGRAM_NAME: Usage: $PROGRAM_NAME [-fwhv]\n");
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};
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if ($params->{'help'}) {
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print "Usage: $PROGRAM_NAME [options]\n";
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print "mixmaster-update $VERSION - (c) 2002 Peter Palfrader <peter\@palfrader.org>\n";
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print " --configfile FILE Also source this config file.\n";
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print " --source NAME Use this built in source.\n";
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print " --destination Write files to this directory.\n";
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print " --verbose Be verbose.\n";
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print "\n";
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print " --list-sources List available sources.\n";
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print " --help Print this message.\n";
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print " --version Print version information.\n";
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print "\n";
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print "ENVIRONMENT VARIABLES:\n";
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print " MIXMASTER_UPDATE_CONF Also source this config file.\n";
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print " HOME Home directory (base for user config\n";
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print " file and destination).\n";
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exit 0;
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};
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if ($params->{'version'}) {
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print ("mixmaster-update $VERSION\n");
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print ("(c) 2002 Peter Palfrader <peter\@palfrader.org>\n");
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exit 0;
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};
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push (@configfiles, $ENV{'MIXMASTER_UPDATE_CONF'}) if defined $ENV{'MIXMASTER_UPDATE_CONF'};
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push (@configfiles, $params->{'configfile'}) if defined $params->{'configfile'};
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push (@sourcesfiles, $ENV{'MIXMASTER_ALLPINGERS'}) if defined $ENV{'MIXMASTER_ALLPINGERS'};
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push (@sourcesfiles, $params->{'allpingers'}) if defined $params->{'allpingers'};
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for my $file (@sourcesfiles) {
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next unless (-e $file);
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my $source;
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open(F,$file) or die("Could not open $file: $!");
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while(<F>) {
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s/\s*(.*)\s*/$1/;
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$source = $1, next if (/^\[(.*)\]$/);
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if (/(.+?)\s*=\s*(.+)/) {
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$SOURCES{$source}->{$1} = $2 if defined $source;
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};
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};
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close(F);
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};
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die("No stats sources available\n") unless scalar keys %SOURCES;
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if ($params->{'list-sources'}) {
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print (join(', ', sort {$a cmp $b} keys %SOURCES), "\n");
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exit 0;
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};
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my %proxy;
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my $source;
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for my $file (@configfiles) {
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next unless (-e $file);
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open (FILE, $file) or
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warn ("Cannot open '$file': $!\n"), next;
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my $line=0;
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while (<FILE>) {
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$line++;
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chomp;
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s/#.*//;
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s/^\s*//;
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s/\s*$//;
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next unless $_;
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my ($key, $value) = split(/\s+/, $_, 2);
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$key = lc($key);
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warn ("$PROGRAM_NAME: Value is not defined (line $line of $file)\n"), next
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unless defined $value;
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if ($key eq 'source') {
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warn ("$PROGRAM_NAME: Source '$value' is not defined (line $line of $file)\n"), next
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unless defined $SOURCES{$value};
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$source = $SOURCES{$value};
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} elsif ($key eq 'destination' ) {
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$destination = $value;
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} elsif ($key eq 'proxy' ) {
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my ($proto, $proxy) = split(/\s+/, $value, 2);
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$proxy{$proto} = $proxy;
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} else {
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warn "$PROGRAM_NAME: key '$key' not known (line $line of $file)\n";
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};
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};
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close (FILE);
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};
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$destination = $params->{'destination'} if defined $params->{'destination'};
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if (defined $params->{'source'}) {
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die ("$PROGRAM_NAME: Source '$params->{'source'}' is not defined\n")
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unless (defined $SOURCES{$params->{'source'}});
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$source = $SOURCES{$params->{'source'}};
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};
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die ("$PROGRAM_NAME: destination directory '$destination' does not exist or is not a directory.\n")
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unless ( -d $destination );
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require LWP::UserAgent;
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my $user_agent =
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LWP::UserAgent->new(env_proxy => 1,
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keep_alive => 1,
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timeout => 30 );
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for my $proto (keys %proxy) {
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if ($proxy{$proto}) {
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print "Setting proxy for protocol $proto to $proxy{$proto}\n"
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if $params->{'verbose'};
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$user_agent->proxy($proto, $proxy{$proto});
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};
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};
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my %result;
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for my $key (keys %$source) {
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warn ("$PROGRAM_NAME: $key is not defined, Skipping download\n"), next
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unless defined $source->{$key};
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next unless defined ($DESTINATION_FILES{$key});
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my $value = $source->{$key};
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print "Getting $value\n"
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if $params->{'verbose'};
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my $uri = URI->new($value);
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if ($user_agent->is_protocol_supported( $uri )) {
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eval {
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local $SIG{ALRM} = sub { die "alarm\n" };
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alarm 35;
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my $response = $user_agent->get($value);
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unless ($response->is_success) {
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warn ("$PROGRAM_NAME: Get failed for $value (".$response->code()." ".$response->message().")\n");
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alarm 0;
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next;
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};
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my $content = $response->content;
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$content =~ s/\r\n/\n/g;
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$result{$key} = $content;
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alarm 0;
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};
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if ($EVAL_ERROR) {
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die unless ($EVAL_ERROR eq "alarm\n");
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warn ("PROGRAM_NAME: Get timed out for $value\n");
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next;
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};
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} else {
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warn ("$PROGRAM_NAME: Protocoll for '$value' not supported\n");
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};
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};
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if (defined $params->{'verbose'} && $params->{'verbose'} >= 2) {
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print "Got results for:\n";
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for my $key (keys %result) {
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print "$key\n";
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print "-------------------\n";
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print $result{$key},"\n";
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print "-------------------\n";
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};
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};
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die ("Downloading of mlist and/or mixring failed (do you need a proxy?). Aborting.\n")
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unless (defined $result{'mlist'} && defined $result{'mixring'});
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die ("mlist seems to not have the correct format (do you need a proxy?). Aborting.\n")
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unless ($result{'mlist'} =~ /^Last update: /m && (
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$result{'mlist'} =~ /^mixmaster\s/m ||
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$result{'mlist'} =~ /^remailer\s/m));
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die ("pubring.mix seems to not have the correct format (do you need a proxy?). Aborting.\n")
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unless ($result{'mixring'} =~ /^-----Begin Mix Key-----$/m);
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for my $key (keys %result) {
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unless (open (F, '>'.$destination.'/'.$DESTINATION_FILES{$key})) {
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my $hint = ($! == EACCES) ? ' (do you want --destination or run as a different user?)' : '';
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warn ("$PROGRAM_NAME: Cannot write to $destination/$DESTINATION_FILES{$key}: $!$hint\n");
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next;
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};
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print F $result{$key};
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close F;
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}
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# vim:set ts=4:
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# vim:set shiftwidth=4:
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