283 lines
8.9 KiB
Perl
283 lines
8.9 KiB
Perl
#!/usr/bin/perl -w
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###############################################################################
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# UseVoteGer 4.09 Personalisierte Wahlscheine
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# (c) 2001-2005 Marc Langer <uv@marclanger.de>
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#
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# This script package is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Public License as published by the
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# Free Software Foundation.
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#
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# Use this script to read mails and send back a CfV with unique ballot id
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#
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# Many thanks to:
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# - Ron Dippold (Usevote 3.0, 1993/94)
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# - Frederik Ramm (German translation, 1994)
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# - Wolfgang Behrens (UseVoteGer 3.1, based on Frederik's translation, 1998/99)
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# - Cornell Binder for some good advice and code fragments
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#
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# This is a complete rewrite of UseVoteGer 3.1 in Perl (former versions were
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# written in C). Not all functions of Usevote/UseVoteGer 3.x are implemented!
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###############################################################################
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use strict;
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use Getopt::Long;
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use Digest::MD5 qw(md5_hex);
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use Text::Wrap qw(wrap $columns);
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use FindBin qw($Bin);
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use lib $Bin;
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use UVconfig;
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use UVmenu;
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use UVmessage;
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use UVreadmail;
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use UVsendmail;
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use UVtemplate;
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my %opt_ctl = ();
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print "\n$usevote_version Personalisierte Wahlscheine - (c) 2001-2005 Marc Langer\n\n";
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# unknown parameters remain in @ARGV (for "help")
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Getopt::Long::Configure(qw(pass_through bundling));
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# Put known parameters in %opt_ctl
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GetOptions(\%opt_ctl, qw(test t config-file=s c=s));
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# test mode? (default: no)
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my $test_only = $opt_ctl{test} || $opt_ctl{t} || 0;
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# # Additional parameters or invalid options? Show help and exit.
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help() if (@ARGV);
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# Get name auf config file (default: usevote.cfg) and read it
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my $cfgfile = $opt_ctl{'config-file'} || $opt_ctl{c} || "usevote.cfg";
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UVconfig::read_config($cfgfile);
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# Set columns for Text::Wrap
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$columns = $config{rightmargin};
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# read list of suspicious mail addresses from file
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my @bad_addr = UVconfig::read_badaddr();
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# exit if option "personal=1" in config file not set
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unless ($config{personal}) {
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die wrap ('', '', UVmessage::get("ERR_NOTPERSONAL", (CFGFILE => $cfgfile))) . "\n\n";
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}
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# option -t used?
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if ($test_only) {
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print_ballot();
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exit 0;
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}
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# check for lock file
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if (-e $config{lockfile}) {
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my $lockfile = $config{lockfile};
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# don't delete lockfile in END block ;-)
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$config{lockfile} = '';
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# exit
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die UVmessage::get("ERR_LOCK", (FILE=>$lockfile)) . "\n\n";
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}
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# safe exit (delete lockfile)
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$SIG{QUIT} = 'sighandler';
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$SIG{INT} = 'sighandler';
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$SIG{KILL} = 'sighandler';
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$SIG{TERM} = 'sighandler';
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$SIG{HUP} = 'sighandler';
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# create lock file
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open (LOCKFILE, ">$config{lockfile}");
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close (LOCKFILE);
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# check for tmp directory and domail file
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unless (-d $config{tmpdir}) {
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mkdir ($config{tmpdir}, 0700)
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or die UVmessage::get("ERR_MKDIR", (DIR => $config{tmpdir})) . "\n$!\n\n";
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}
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# generate filename for mail archive
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# normally unixtime is sufficient, if it is not unique append a number
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my $file = my $base = "anforderung-" . time();
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my $count = 0;
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while ($count<1000 && (-e "$config{archivedir}/$file" || -e "$config{tmpdir}/$file")) {
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$file = "$base-" . ++$count;
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}
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die UVmessage::get("ERR_FILE_CREATION") . "\n\n" if ($count == 1000);
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unless ($config{pop3}) {
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rename ($config{requestfile}, "$config{tmpdir}/$file")
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or die UVmessage::get("ERR_RENAME_MAILFILE") . "$!\n\n";
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}
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# wait, so that current mail deliveries can finalize
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sleep 2;
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# initiliaze random number generator
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srand;
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# read votes and process them
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# for each mail pass a reference to the sub to be called
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# The third parameter "1" shows that it is called from uvcfv.pl
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$count = UVreadmail::process("$config{tmpdir}/$file", \&process_request, 1);
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print "\n", UVmessage::get("CFV_NUMBER", (COUNT => $count)), "\n\n";
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UVsendmail::send();
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print UVmessage::get("INFO_TIDY_UP") . "\n\n";
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rename("$config{tmpdir}/$file", "$config{archivedir}/$file");
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chmod (0400, "$config{archivedir}/$file");
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exit 0;
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##############################################################################
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# Evaluate a ballot request #
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# Called from UVreadmail::process() for every mail #
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# Parameters: Voter address and name, date header of vote mail (strings), #
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# complete header and body (references to Strings) #
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##############################################################################
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sub process_request {
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my ($voter_addr, $voter_name, $h_date, $entity, $body) = @_;
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my @header = split(/\n/, $entity->stringify_header);
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my $head = $entity->head;
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my $msgid = $head->get('Message-ID');
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chomp($msgid) if ($msgid);
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# found address?
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if ($voter_addr) {
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# check for suspicious addresses
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foreach my $element (@bad_addr) {
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if ($voter_addr =~ /^$element/) {
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my (@votes, @set, $ballot_id); # irrelevant, but necessary for UVmenu::menu()
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my @errors = ('SuspiciousAccountBallot');
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my $res = UVmenu::menu(\@votes, \@header, $body, \$voter_addr, \$voter_name, \$ballot_id, \@set, \@errors);
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# "Ignore": don't deliver a ballot
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return 0 if ($res eq 'i');
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if (@errors) {
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# send error mail if address hasn't been accepted
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my $template = UVtemplate->new();
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$template->setKey('head' => $entity->stringify_header);
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$template->setKey('body' => $$body);
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my $msg = $template->processTemplate($config{tpl_invalid_account});
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UVsendmail::mail($voter_addr, "Fehler", $msg, $msgid);
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return 0;
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}
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last;
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}
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}
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} else {
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# no address found in mail (non-RFC compliant?)
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my (@votes, @set, $ballot_id); # irrelevant, but necessary for UVmenu::menu()
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my @errors = ('InvalidAddressBallot');
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my $res = UVmenu::menu(\@votes, \@header, $body, \$voter_addr, \$voter_name, \$ballot_id, \@set, \@errors);
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# "ignore" or address not ok: no ballot can be sent
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return 0 if (@errors || $res eq 'i');
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}
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my $subject = UVmessage::get("CFV_SUBJECT");
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my $template = UVtemplate->new();
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my $ballot_id = "";
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#if ($ballot_id ne $ids{$voter_addr}) {
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if ($ids{$voter_addr}) {
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$ballot_id = $ids{$voter_addr};
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$template->setKey('alreadysent' => 1) if ($ballot_id = $ids{$voter_addr});
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} else {
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# generate new ballot id from the MD5 sum of header, body and a random value
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$ballot_id = md5_hex($entity->stringify_header . $body . rand 65535);
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$ids{$voter_addr} = $ballot_id;
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# write ballot id to file
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open(IDFILE, ">>$config{idfile}")
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or die UVmessage::get("CFV_ERRWRITE", (FILE => $config{idfile})) . "\n\n";
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print IDFILE "$voter_addr $ballot_id\n";
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close(IDFILE) or die UVmessage::get("CFV_ERRCLOSE") . "\n\n";
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}
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$template->setKey('ballotid' => $ballot_id);
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$template->setKey('address' => $voter_addr);
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$template->setKey('bdsginfo' => $config{bdsginfo});
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for (my $n=0; $n<@groups; $n++) {
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$template->addListItem('groups', pos=>$n+1, group=>$groups[$n]);
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}
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my $msg = $template->processTemplate($config{'tpl_ballot_personal'});
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# $config{voteaccount} is the Reply-To address:
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UVsendmail::mail($voter_addr, $subject, $msg, $msgid, $config{voteaccount});
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}
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##############################################################################
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# Print dummy personalized ballot in STDOUT for checking purposes #
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# Called if command line argument -t is present #
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##############################################################################
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sub print_ballot {
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my $template = UVtemplate->new();
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# generate new ballot id
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my $ballot_id = md5_hex(rand 65535);
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$template->setKey('ballotid' => $ballot_id);
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$template->setKey('address' => 'dummy@foo.invalid');
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$template->setKey('bdsginfo' => $config{bdsginfo});
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for (my $n=0; $n<@groups; $n++) {
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$template->addListItem('groups', pos=>$n+1, group=>$groups[$n]);
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}
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my $msg = $template->processTemplate($config{'tpl_ballot_personal'});
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print $msg, "\n";
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}
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##############################################################################
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# Handle Signals and delete lock files when exiting #
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##############################################################################
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END {
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# delete lockfile
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unlink $config{lockfile} if ($config{lockfile});
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}
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sub sighandler {
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my ($sig) = @_;
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die "\n\nSIG$sig: deleting lockfile and exiting\n\n";
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}
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##############################################################################
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# Print help text (options and syntax) on -h or --help #
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##############################################################################
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sub help {
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print <<EOF;
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Usage: uvcfv.pl [-c config_file] [-t]
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uvcfv.pl -h
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Liest Mailboxen ein und beantwortet alle Mails mit personalisierten CfVs.
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-c config_file liest die Konfiguration aus config_file
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(usevote.cfg falls nicht angegeben)
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-t, --test gibt einen Dummy-Wahlschein fuer Pruefzwecke aus
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-h, --help zeigt diesen Hilfetext an
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EOF
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exit 0;
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}
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