139 lines
4.5 KiB
Perl
Executable file
139 lines
4.5 KiB
Perl
Executable file
#!/usr/bin/perl
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# Copyright (C) 2010, Bradley M. Kuhn
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#
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# This program gives you software freedom; you can copy, modify, convey,
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# and/or redistribute it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 3 of the
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# License, or (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, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# 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 along
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# with this program in a file called 'GPLv3'. If not, write to the:
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# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor
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# Boston, MA 02110-1301, USA.
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use strict;
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use warnings;
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use Mail::Header;
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use Date::Manip;
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#use File::Copy;
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my $VERBOSE = 1;
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if (@ARGV < 4 or @ARGV > 5) {
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print STDERR "usage: $0 <MAILDIR_DIRECTORY> <DSPAM_PROBABILITY_MIN> <DSPAM_CONFIDENCE_LEVEL_MIN> <DAYS> [<COUNT_ONLY_DONT_DELETE>]\n";
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exit 1;
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}
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my($MAILDIR_FOLDER, $DSPAM_PROB_MIN, $DSPAM_CONF_MIN, $DAYS, $COUNT_ONLY) = @ARGV;
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my($total, $countDeleted, $totalInDate) = (0, 0, 0);
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my $nDaysAgo = ParseDate("$DAYS days ago");
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my @msgDirs = ("$MAILDIR_FOLDER/cur", "$MAILDIR_FOLDER/new");
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foreach my $dir (@msgDirs) {
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die "$MAILDIR_FOLDER must not be a maildir folder (or is unreadable by you), since $dir isn't a readable directory: $!"
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unless (-d $dir);
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}
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foreach my $dir (@msgDirs) {
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opendir(MAILDIR, $dir) or die "Unable to open directory $dir for reading: $!";
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MAIL: while (my $file = readdir MAILDIR) {
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next if -d $file; # skip directories
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my $fullFileName = "$dir/$file";
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unless (open(MAIL_MESSAGE, "<", $fullFileName)) {
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print STDERR "File, $fullFileName, appears to have disappeared during processing ($!).\n (Ignoring that fact, but counts may be off.)\n";
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next MAIL;
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}
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my $header = new Mail::Header(\*MAIL_MESSAGE);
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my $fields = $header->header_hashref;
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my $mailDate;
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foreach my $dt (@{$fields->{"Date"}}) {
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if (not defined $mailDate) {
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$mailDate = $dt;
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} else {
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$mailDate = $dt if $dt lt $mailDate;
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}
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}
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if (not defined $mailDate) {
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print STDERR "File $file has no Date: header. Skipping.\n";
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next MAIL;
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}
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my $parsedDate = ParseDate($mailDate);
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unless (defined $parsedDate) {
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print STDERR "File $file has Unparsable Date header $mailDate";
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next MAIL;
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}
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$total++;
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print "\nDate: $parsedDate" if ($VERBOSE > 2);
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next MAIL if ($parsedDate gt $nDaysAgo);
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$totalInDate++;
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print " Not skipping over date, $nDaysAgo\n" if ($VERBOSE > 2);
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my %dspamVal;
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foreach my $val ('Confidence', 'Probability') {
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foreach my $dv (@{$fields->{"X-Dspam-$val"}}) {
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chomp $dv;
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if (not defined $dspamVal{$val}) {
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$dspamVal{$val} = $dv;
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} else {
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$dspamVal{$val} = $dv if $dv < $dspamVal{$val};
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}
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}
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if (not defined $dspamVal{$val}) {
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print STDERR "File $file has no X-Dspam-$val header. Skipping.\n";
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next MAIL;
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}
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}
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print " Confidence: $dspamVal{Confidence}, Probability: $dspamVal{Probability}\n"
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if ($VERBOSE > 2);
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if ($dspamVal{Confidence} >= $DSPAM_CONF_MIN and
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$dspamVal{Probability} >= $DSPAM_PROB_MIN) {
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$countDeleted++;
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print " counting this one\n" if ($VERBOSE > 2);
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unless (defined $COUNT_ONLY and $COUNT_ONLY) {
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warn "unable to unlink $fullFileName: $!"
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unless unlink("$fullFileName") == 1;
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}
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}
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close MAIL_MESSAGE;
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}
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close MAILDIR;
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}
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my $percent = ($countDeleted / $total) * 100.00;
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print sprintf("%.2f", $percent), "% ($countDeleted/$total) ",
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((defined $COUNT_ONLY and $COUNT_ONLY) ?
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" would be deleted.\n" :
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sprintf("were deleted.\nThis leaves %d in the folder.\n",
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$total - $countDeleted));
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my $percentInDate = ($totalInDate / $total) * 100.00;
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print sprintf("Of those matching the date range, %.2f", $percentInDate), "% ($countDeleted/$totalInDate) ",
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((defined $COUNT_ONLY and $COUNT_ONLY) ?
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" would be deleted.\n" :
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sprintf("were deleted.\n"));
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print sprintf("%d in the folder don't match that date range.\n",
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$total - $totalInDate);
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###############################################################################
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#
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# Local variables:
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# compile-command: "perl -c remove-spam-high-confidence-maildir.plx"
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# End:
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