416 lines
13 KiB
Perl
416 lines
13 KiB
Perl
#! /usr/bin/perl -W
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#
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# yapfaq Version 0.6 by Thomas Hochstein
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# (Original author: Marc Brockschmidt)
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#
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# This script posts any project described in its config-file. Most people
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# will use it in combination with cron(8).
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#
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# Copyright (C) 2003 Marc Brockschmidt <marc@marcbrockschmidt.de>
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# Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
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#
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# It can be redistributed and/or modified under the same terms under
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# which Perl itself is published.
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my $Version = "0.6-unreleased";
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my $NNTPServer = "";
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my $NNTPUser = "";
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my $NNTPPass = "";
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my $Sender = "";
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my $ConfigFile = "yapfaq.cfg";
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my $UsePGP = 0;
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################################## PGP-Config #################################
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my $pgp = '/usr/bin/pgp'; # path to pgp
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my $PGPVersion = '2'; # Use 2 for 2.X, 5 for PGP > 2.X and GPG for GPG
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my $PGPSigner = ''; # sign as who?
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my $PGPPass = ''; # pgp2 only
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my $PathtoPGPPass = ''; # pgp2, pgp5 and gpg
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my $pgpbegin ='-----BEGIN PGP SIGNATURE-----';# Begin of PGP-Signature
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my $pgpend ='-----END PGP SIGNATURE-----'; # End of PGP-Signature
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my $pgptmpf ='pgptmp'; # temporary file for PGP.
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my $pgpheader ='X-PGP-Sig';
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my @PGPSignHeaders = ('From', 'Newsgroups', 'Subject', 'Control',
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'Supersedes', 'Followup-To', 'Date', 'Sender', 'Approved',
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'Message-ID', 'Reply-To', 'Cancel-Lock', 'Cancel-Key',
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'Also-Control', 'Distribution');
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my @PGPorderheaders = ('from', 'newsgroups', 'subject', 'control',
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'supersedes', 'followup-To', 'date', 'organization', 'lines',
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'sender', 'approved', 'distribution', 'message-id',
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'references', 'reply-to', 'mime-version', 'content-type',
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'content-transfer-encoding', 'summary', 'keywords', 'cancel-lock',
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'cancel-key', 'also-control', 'x-pgp', 'user-agent');
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############################# End of Configuration #############################
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use strict;
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use Net::NNTP;
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use Date::Calc qw(Add_Delta_YM Add_Delta_Days Delta_Days Today);
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use Fcntl ':flock'; # import LOCK_* constants
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my ($TDY, $TDM, $TDD) = Today(); #TD: Today's date
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my @Config;
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readconfig (\$ConfigFile, \@Config);
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foreach (@Config) {
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my ($LPD,$LPM,$LPY) = (01, 01, 0001); #LP: Last posting-date
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my ($NPY,$NPM,$NPD); #NP: Next posting-date
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my $SupersedeMID;
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my ($ActName,$File,$PFreq) =($$_{'name'},$$_{'file'},$$_{'posting-frequency'});
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my ($From,$Subject,$NG,$Fup2)=($$_{'from'},$$_{'subject'},$$_{'ngs'},$$_{'fup2'});
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my ($MIDF,$ReplyTo,$ExtHea)=($$_{'mid-format'},$$_{'reply-to'},$$_{'extraheader'});
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my ($Supersede) =($$_{'supersede'});
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if (open (FH, "<$File.cfg")) {
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while(<FH>){
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if (/##;; Lastpost:\s*(\d{1,2})\.(\d{1,2})\.(\d{2}(\d{2})?)/){
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($LPD, $LPM, $LPY) = ($1, $2, $3);
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} elsif (/^##;;\s*LastMID:\s*(<\S+@\S+>)\s*$/) {
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$SupersedeMID = $1;
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}
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}
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close FH;
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} else {
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warn "Couldn't open $File.cfg: $!\n";
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}
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$SupersedeMID = "" unless $Supersede;
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if ($PFreq =~ /(\d+)\s*([dw])/) { # Is counted in days or weeks: Use Add_Delta_Days.
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($NPY,$NPM,$NPD) = Add_Delta_Days($LPY, $LPM, $LPD, (($2 eq "w")?$1 * 7: $1 * 1));
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} elsif ($PFreq =~ /(\d+)\s*([my])/) { #Is counted in months or years: Use Add_Delta_YM
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($NPY,$NPM,$NPD) = Add_Delta_YM($LPY, $LPM, $LPD, (($2 eq "m")?(0,$1):($1,0)));
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}
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if (Delta_Days($NPY,$NPM,$NPD,$TDY,$TDM,$TDD) >= 0 ) {
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postfaq(\$ActName,\$File,\$From,\$Subject,\$NG,\$Fup2,\$MIDF,\$ExtHea,\$Sender,\$TDY,\$TDM,\$TDD,\$ReplyTo,\$SupersedeMID);
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}
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}
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exit;
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################################## readconfig ##################################
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# Takes a filename and the reference to an array, which will hold hashes with
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# the data from $File.
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sub readconfig{
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my ($File, $Config) = @_;
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my ($LastEntry, $Error, $i) = ('','',0);
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open FH, "<$$File" or die "$0: Can't open $$File: $!";
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while (<FH>) {
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if (/^(\s*(\S+)\s*=\s*'?(.*?)'?\s*(#.*$|$)|^(.*?)'?\s*(#.*$|$))/ && not /^\s*$/) {
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$LastEntry = lc($2) if $2;
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$$Config[$i]{$LastEntry} .= $3 if $3;
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$$Config[$i]{$LastEntry} .= "\n$5" if $5 && $5;
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}
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if (/^\s*=====\s*$/) {
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$i++;
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}
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}
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close FH;
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#Check saved values:
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for $i (0..$i){
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unless($$Config[$i]{'from'} =~ /\S+\@(\S+\.)?\S{2,}\.\S{2,}/) {
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$Error .= "The From-header for your project \"$$Config[$i]{'name'}\" seems to be incorrect.\n"
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}
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unless($$Config[$i]{'ngs'} =~ /^\S+$/) {
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$Error .= "The Newsgroups-header for your project \"$$Config[$i]{'name'}\" contains whitespaces.\n"
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}
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unless(!$$Config[$i]{'fup2'} || $$Config[$i]{'fup2'} =~ /^\S+$/) {
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$Error .= "The Followup-To-header for your project \"$$Config[$i]{'name'}\" contains whitespaces.\n"
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}
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unless($$Config[$i]{'posting-frequency'} =~ /^\s*\d+\s*[dwmy]\s*$/) {
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$Error .= "The Posting-frequency for your project \"$$Config[$i]{'name'}\" is invalid.\n"
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}
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$Error .= "-" x 25 . "\n" if $Error;
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}
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die $Error if $Error;
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}
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################################## postfaq ##################################
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# Takes a filename and many other vars.
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#
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# It reads the data-file $File and then posts the article.
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sub postfaq {
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my ($ActName,$File,$From,$Subject,$NG,$Fup2,$MIDF,$ExtraHeaders,$Sender,$TDY,$TDM,$TDD,$ReplyTo,$Supersedes) = @_;
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my (@Header,@Body,$MID,$InRealBody,$LastModified);
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#Prepare MID:
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$$TDM = ($$TDM < 10 && $$TDM !~ /^0/) ? "0" . $$TDM : $$TDM;
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$$TDD = ($$TDD < 10 && $$TDD !~ /^0/) ? "0" . $$TDD : $$TDD;
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$MID = $$MIDF;
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$MID =~ s/\%n/$$ActName/g;
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$MID =~ s/\%d/$$TDD/g;
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$MID =~ s/\%m/$$TDM/g;
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$MID =~ s/\%y/$$TDY/g;
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#Now get the body:
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open (FH, "<$$File");
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while (<FH>){
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s/\r//;
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push (@Body, $_), next if $InRealBody;
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$InRealBody++ if /^$/;
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$LastModified = $1 if /^Last-modified: (\S+)$/i;
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push @Body, $_;
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}
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close FH;
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push @Body, "\n" if ($Body[-1] ne "\n");
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#Create Date- and Expires-Header:
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my @time = localtime;
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my $ss = ($time[0]<10) ? "0" . $time[0] : $time[0];
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my $mm = ($time[1]<10) ? "0" . $time[1] : $time[1];
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my $hh = ($time[2]<10) ? "0" . $time[2] : $time[2];
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my $day = $time[3];
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my $month = ($time[4]+1<10) ? "0" . ($time[4]+1) : $time[4]+1;
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my $monthN = ("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")[$time[4]];
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my $wday = ("Sun","Mon","Tue","Wed","Thu","Fri","Sat")[$time[6]];
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my $year = (1900 + $time[5]);
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my $tz = $time[8] ? " +0200" : " +0100";
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my ($expY,$expM,$expD) = Add_Delta_YM($year, $month, $day, 0, 3);
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my $expmonthN = ("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")[$expM-1];
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my $date = "$day $monthN $year " . $hh . ":" . $mm . ":" . $ss . $tz;
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my $expdate = "$expD $expmonthN $expY $hh:$mm:$ss$tz";
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#Replace %LM by the content of the news.answer-pseudo-header Last-modified:
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if ($LastModified) {
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$$Subject =~ s/\%LM/$LastModified/;
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}
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#Now create the complete Header:
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push @Header, "From: $$From\n";
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push @Header, "Newsgroups: $$NG\n";
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push @Header, "Followup-To: $$Fup2\n" if $$Fup2;
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push @Header, "Subject: $$Subject\n";
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push @Header, "Message-ID: $MID\n";
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push @Header, "Supersedes: $$Supersedes\n" if $$Supersedes;
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push @Header, "Date: $date\n";
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push @Header, "Expires: $expdate\n";
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push @Header, "Sender: $$Sender\n" if $$Sender;
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push @Header, "Mime-Version: 1.0\n";
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push @Header, "Reply-To: $$ReplyTo\n" if $$ReplyTo;
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push @Header, "Content-Type: text/plain; charset=ISO-8859-15\n";
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push @Header, "Content-Transfer-Encoding: 8bit\n";
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push @Header, "User-Agent: yapfaq/$Version\n";
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if ($$ExtraHeaders) {
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push @Header, "$_\n" for (split /\n/, $$ExtraHeaders);
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}
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my @Article = ($UsePGP)?@{signpgp(\@Header, \@Body)}:(@Header, "\n", @Body);
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post(\@Article);
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open (FH, ">$$File.cfg") or die "$0: Can't open $$File.cfg: $!";
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print FH "##;; Lastpost: $day.$month.$year\n";
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print FH "##;; LastMID: $MID\n";
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close FH;
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}
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################################## post ##################################
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# Takes a complete article (Header and Body).
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#
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# It opens a connection to $NNTPServer and posts the message.
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sub post {
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my ($ArticleR) = @_;
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my $NewsConnection = Net::NNTP->new($NNTPServer, Reader => 1)
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or die "Can't connect to news server $NNTPServer!\n";
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$NewsConnection->authinfo ($NNTPUser, $NNTPPass);
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$NewsConnection->post();
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$NewsConnection->datasend (@$ArticleR);
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$NewsConnection->dataend();
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if (!$NewsConnection->ok()) {
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open FH, ">>ERROR.dat";
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print FH "\nPosting failed! Saving to ERROR.dat. Response from news server:\n";
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print FH $NewsConnection->code();
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print FH $NewsConnection->message();
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print FH "\n";
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print FH @$ArticleR;
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print FH "-" x 80, "\n";
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close FH;
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}
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$NewsConnection->quit();
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}
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#-------- sub getpgpcommand
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# getpgpcommand generates the command to sign the message and returns it.
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#
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# Receives:
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# - $PGPVersion: A scalar holding the PGPVersion
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sub getpgpcommand {
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my ($PGPVersion) = @_;
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my $PGPCommand;
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if ($PGPVersion eq '2') {
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if ($PathtoPGPPass && !$PGPPass) {
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open (PGPPW, $PathtoPGPPass) or die "Can't open $PathtoPGPPass: $!";
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$PGPPass = <PGPPW>;
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close PGPPW;
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}
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if ($PGPPass) {
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$PGPCommand = "PGPPASS=\"".$PGPPass."\" ".$pgp." -u \"".$PGPSigner."\" +verbose=0 language='en' -saft <".$pgptmpf.".txt >".$pgptmpf.".txt.asc";
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} else {
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die "$0: PGP-Passphrase is unknown!\n";
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}
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} elsif ($PGPVersion eq '5') {
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if ($PathtoPGPPass) {
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$PGPCommand = "PGPPASSFD=2 ".$pgp."s -u \"".$PGPSigner."\" -t --armor -o ".$pgptmpf.".txt.asc -z -f < ".$pgptmpf.".txt 2<".$PathtoPGPPass;
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} else {
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die "$0: PGP-Passphrase is unknown!\n";
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}
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} elsif ($PGPVersion =~ m/GPG/io) {
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if ($PathtoPGPPass) {
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$PGPCommand = $pgp." --digest-algo MD5 -a -u \"".$PGPSigner."\" -o ".$pgptmpf.".txt.asc --no-tty --batch --passphrase-fd 2 2<".$PathtoPGPPass." --clearsign ".$pgptmpf.".txt";
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} else {
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die "$0: Passphrase is unknown!\n";
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}
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} else {
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die "$0: Unknown PGP-Version $PGPVersion!";
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}
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return $PGPCommand;
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}
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#-------- sub signarticle
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# signarticle signs an articel and returns a reference to an array
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# containing the whole signed Message.
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#
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# Receives:
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# - $HeaderAR: A reference to a array containing the articles headers.
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# - $BodyR: A reference to an array containing the body.
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#
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# Returns:
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# - $MessageRef: A reference to an array containing the whole message.
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sub signpgp {
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my ($HeaderAR, $BodyR) = @_;
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my (@pgphead, @pgpbody, $pgphead, $pgpbody, $header, $signheaders, @signheaders, $currentheader, $HeaderR, $line);
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foreach my $line (@$HeaderAR) {
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if ($line =~ /^(\S+):\s+(.*)$/s) {
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$currentheader = $1;
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$$HeaderR{lc($currentheader)} = "$1: $2";
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} else {
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$$HeaderR{lc($currentheader)} .= $line;
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}
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}
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foreach (@PGPSignHeaders) {
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if (defined($$HeaderR{lc($_)}) && $$HeaderR{lc($_)} =~ m/^[^\s:]+: .+/o) {
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push @signheaders, $_;
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}
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}
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$pgpbody = join ("", @$BodyR);
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# Delete and create the temporary pgp-Files
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unlink "$pgptmpf.txt";
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unlink "$pgptmpf.txt.asc";
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$signheaders = join(",", @signheaders);
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$pgphead = "X-Signed-Headers: $signheaders\n";
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foreach $header (@signheaders) {
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if ($$HeaderR{lc($header)} =~ m/^[^\s:]+: (.+?)\n?$/so) {
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$pgphead .= $header.": ".$1."\n";
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}
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}
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open(FH, ">" . $pgptmpf . ".txt") or die "$0: can't open $pgptmpf: $!\n";
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print FH $pgphead, "\n", $pgpbody;
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print FH "\n" if ($PGPVersion =~ m/GPG/io); # workaround a pgp/gpg incompatibility - should IMHO be fixed in pgpverify
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close(FH) or warn "$0: Couldn't close TMP: $!\n";
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# Start PGP, then read the signature;
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my $PGPCommand = getpgpcommand($PGPVersion);
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`$PGPCommand`;
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open (FH, "<" . $pgptmpf . ".txt.asc") or die "$0: can't open ".$pgptmpf.".txt.asc: $!\n";
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$/ = "$pgpbegin\n";
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$_ = <FH>;
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unless (m/\Q$pgpbegin\E$/o) {
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# unlink $pgptmpf . ".txt";
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# unlink $pgptmpf . ".txt.asc";
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die "$0: $pgpbegin not found in ".$pgptmpf.".txt.asc\n"
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}
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unlink($pgptmpf . ".txt") or warn "$0: Couldn't unlink $pgptmpf.txt: $!\n";
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$/ = "\n";
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$_ = <FH>;
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unless (m/^Version: (\S+)(?:\s(\S+))?/o) {
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unlink $pgptmpf . ".txt";
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unlink $pgptmpf . ".txt.asc";
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die "$0: didn't find PGP Version line where expected.\n";
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}
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if (defined($2)) {
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$$HeaderR{$pgpheader} = $1."-".$2." ".$signheaders;
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} else {
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$$HeaderR{$pgpheader} = $1." ".$signheaders;
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}
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do { # skip other pgp headers like
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$_ = <FH>; # "charset:"||"comment:" until empty line
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} while ! /^$/;
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while (<FH>) {
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chomp;
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last if /^\Q$pgpend\E$/;
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$$HeaderR{$pgpheader} .= "\n\t$_";
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}
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$$HeaderR{$pgpheader} .= "\n" unless ($$HeaderR{$pgpheader} =~ /\n$/s);
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$_ = <FH>;
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unless (eof(FH)) {
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unlink $pgptmpf . ".txt";
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unlink $pgptmpf . ".txt.asc";
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die "$0: unexpected data following $pgpend\n";
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}
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close(FH);
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unlink "$pgptmpf.txt.asc";
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my $tmppgpheader = $pgpheader . ": " . $$HeaderR{$pgpheader};
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delete $$HeaderR{$pgpheader};
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@pgphead = ();
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foreach $header (@PGPorderheaders) {
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if ($$HeaderR{$header} && $$HeaderR{$header} ne "\n") {
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push(@pgphead, "$$HeaderR{$header}");
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delete $$HeaderR{$header};
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}
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}
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foreach $header (keys %$HeaderR) {
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if ($$HeaderR{$header} && $$HeaderR{$header} ne "\n") {
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push(@pgphead, "$$HeaderR{$header}");
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delete $$HeaderR{$header};
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}
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}
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push @pgphead, ("X-PGP-Key: " . $PGPSigner . "\n"), $tmppgpheader;
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undef $tmppgpheader;
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@pgpbody = split /$/m, $pgpbody;
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my @pgpmessage = (@pgphead, "\n", @pgpbody);
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return \@pgpmessage;
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}
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