Date: Fri, 15 Sep 2000 11:03:41 -0700 From: Alan Batie <alan@rdrop.com> To: Matt Goward <mgoward@eviloverlord.org> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Mail box trimming tool Message-ID: <20000915110341.57155@rdrop.com> In-Reply-To: <200009151707.NAA32297@eviloverlord.org>; from Matt Goward on Fri, Sep 15, 2000 at 01:07:08PM -0400 References: <200009151707.NAA32297@eviloverlord.org>
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On Fri, Sep 15, 2000 at 01:07:08PM -0400, Matt Goward wrote:
> Does anyone know of a tool that given a username and quota, will trim a
> mail box by deleting the oldest message until it is at the quota?
It doesn't compare the quota, but this is what I use to age my mailboxes:
#!/usr/local/bin/perl
eval "exec /usr/contrib/bin/perl -S $0 $*"
if $running_under_some_shell;
$| = 1;
if ($#ARGV != 2) {
print "Usage: $0 folder_dir archive_dir days_to_keep\n";
exit(1);
}
# If archive_dir == /dev/null, toss messages
$toss = 0;
$folder_dir = $ARGV[0];
$archive_dir = $ARGV[1];
if ($archive_dir eq "/dev/null") {
$toss = 1;
}
$keep_days = $ARGV[2];
if ($keep_days =~ /[^0-9]/) {
print STDERR "Number of days parameter must be numeric.\n";
exit(1);
}
$keep_time = $keep_days * 24 * 3600;
$cur_time = time;
unless (opendir(FOLDERS, $folder_dir)) {
print STDERR "Can't open '$folder_dir': $!\n";
exit(1);
}
print;
while ($mbox = readdir(FOLDERS)) {
$mailbox = $folder_dir . "/" . $mbox;
if ( ! -f $mailbox ) {
next;
}
print "\r$mbox... ";
$archive = $archive_dir . "/" . $mbox;
$newbox = $folder_dir . "/$$." . $mbox;
($start_dev, $start_ino, $start_mode, $start_nlink, $start_uid, $start_gid,
$start_rdev, $start_size, $start_atime, $start_mtime, $start_ctime,
$start_blksize, $start_blocks) = stat($mailbox);
unless (open(mailbox, "<$mailbox")) {
print STDERR "Can't read $mailbox: $!\n";
exit(1);
}
unless (open(newbox, ">$newbox")) {
print STDERR "Can't write to $newbox: $!\n";
exit(1);
}
if (!$toss) {
unless (open(archive, ">>$archive")) {
print STDERR "Can't append to $archive: $!\n";
exit(1);
}
}
# In case there's junk in front of the first From...
$arch_it = 1;
while (<mailbox>) {
if (/^From /) {
$msg_time = do parse_date($_);
if ($cur_time - $msg_time < $keep_time) {
$arch_it = 0;
} else {
$arch_it = 1;
}
}
if ($arch_it == 0) {
print newbox $_ || die "Write to $newbox failed: $!\n";
} else {
if (!$toss) {
print archive $_ || die "Write to $archive failed: $!\n";
}
}
}
close(mailbox);
close(newbox);
if (!$toss) {
close(archive);
}
($stop_dev, $stop_ino, $stop_mode, $stop_nlink, $stop_uid, $stop_gid,
$stop_rdev, $stop_size, $stop_atime, $stop_mtime, $stop_ctime,
$stop_blksize, $stop_blocks) = stat($mailbox);
if ($stop_mtime > $start_mtime) {
print STDERR "$mailbox was modified after start of archive ---\n";
print STDERR "Updated version left in $newbox.\n";
exit(1);
}
unless (unlink($mailbox)) {
print STDERR "Unable to unlink $mailbox: $!\n";
exit(1);
}
if (!$toss) {
if ( -z $archive ) {
unless (unlink($archive)) {
print STDERR "Can't unlink empty archive '$archive': $!\n";
exit(1);
}
}
}
if ( -s $newbox ) {
unless (link($newbox, $mailbox)) {
print STDERR "Unable to link $newbox to $mailbox: $!\n";
exit(1);
}
}
unlink($newbox);
# print "done\n";
}
print "\n";
exit(0);
# Process From_ lines to get the number of days since Jan. 1, 1970:
#
# From aahz!batie Fri Aug 3 08:30:41 1990
sub parse_date {
local($from_space) = $_;
$month_tbl{"Jan"} = 0;
$month_tbl{"Feb"} = 1;
$month_tbl{"Mar"} = 2;
$month_tbl{"Apr"} = 3;
$month_tbl{"May"} = 4;
$month_tbl{"Jun"} = 5;
$month_tbl{"Jul"} = 6;
$month_tbl{"Aug"} = 7;
$month_tbl{"Sep"} = 8;
$month_tbl{"Oct"} = 9;
$month_tbl{"Nov"} = 10;
$month_tbl{"Dec"} = 11;
$days_so_far{"Jan"} = 0;
$days_so_far{"Feb"} = 31;
$days_so_far{"Mar"} = 59;
$days_so_far{"Apr"} = 90;
$days_so_far{"May"} = 120;
$days_so_far{"Jun"} = 151;
$days_so_far{"Jul"} = 181;
$days_so_far{"Aug"} = 212;
$days_so_far{"Sep"} = 243;
$days_so_far{"Oct"} = 273;
$days_so_far{"Nov"} = 304;
$days_so_far{"Dec"} = 334;
$sec_per_year = 31536000;
$sec_per_day = 86400;
$sec_per_hour = 3600;
$sec_per_minute = 60;
$timezone = 8;
($d1, $d2, $d3, $month, $day, $time, $year) = split(/ +/, $from_space);
($hours, $minutes, $seconds) = split(/:/, $time);
$month_num = $month_tbl{$month};
# determine the number of seconds since the beginning of the universe
$clock = ($year - 1970) * $sec_per_year;
if ($month ne "Jan") {
$clock = $clock + $days_so_far{$month} * $sec_per_day;
}
$clock = $clock + ($day - 1) * $sec_per_day;
$clock = $clock + $hours * $sec_per_hour;
$clock = $clock + $minutes * $sec_per_minute;
$clock = $clock + $seconds;
# calculate in the leap year fudge factors
if ($year gt 1971) {
$fudge_days = 0;
$fudge_days = int(($year - 1971) / 4);
if (($year % 4) == 0 && ($month_num > 1)) {
$fudge_days++;
}
$clock = $clock + $fudge_days * $sec_per_day;
}
# calculate in the time shift westward from Greenwich
$clock = $clock + $timezone * $sec_per_hour;
# worry about daylight savings time
($d1, $d2, $d3, $d4, $d5, $d6, $d7, $d8, $isdst) = localtime(time);
if ($isdst != 0) {
$clock = $clock - $sec_per_hour;
}
return $clock;
}
--
Alan Batie ______ www.rdrop.com/users/alan Me
alan@batie.org \ / www.qrd.org The Triangle
PGPFP DE 3C 29 17 C0 49 7A \ / www.pgpi.com The Weird Numbers
27 40 A5 3C 37 4A DA 52 B9 \/ www.anti-spam.net NO SPAM!
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