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|
#! @PERL@
use bytes;
use warnings;
# MC extfs for (possibly compressed) Berkeley style mailbox files
# Peter Daum <gator@cs.tu-berlin.de> (Jan 1998, mc-4.1.24)
$zcat="zcat"; # gunzip to stdout
$bzcat="bzip2 -dc"; # bunzip2 to stdout
$lzipcat="lzip -dc"; # unlzip to stdout
$lz4cat="lz4 -dc"; # unlz4 to stdout
$lzcat="lzma -dc"; # unlzma to stdout
$xzcat="xz -dc"; # unxz to stdout
$zstdcat="zstd -dc"; # unzstd to stdout
$file="file"; # "file" command
$TZ='GMT'; # default timezone (for Date module)
if (eval "require Date::Parse") {
import Date::Parse;
$parse_date=
sub {
local $ftime = str2time($_[0],$TZ);
$_ = localtime($ftime);
/^(...) (...) ([ \d]\d) (\d\d:\d\d):\d\d (\d\d\d\d)$/;
if ($ftime + 6 * 30 * 24 * 60 * 60 < $now ||
$ftime + 60 * 60 > $now) {
return "$2 $3 $5";
} else {
return "$2 $3 $4";
}
}
} elsif (eval "require Date::Manip") {
import Date::Manip;
$parse_date=
sub {
return UnixDate($_[0], "%l"); # "ls -l" format
}
} else { # use "light" version
$parse_date= sub {
local $mstring='GeeJanFebMarAprMayJunJulAugSepOctNovDec';
# assumes something like: Mon, 5 Jan 1998 16:08:19 +0200 (GMT+0200)
# if you have mails with another date format, add it here
if (/(\d\d?) ([A-Z][a-z][a-z]) (\d\d\d\d) (\d\d?):(\d\d)/) {
$day = $1;
$month = $2;
$mon = index($mstring,$month) / 3;
$year = $3;
$hour = $4;
$min = $5;
# pass time not year for files younger than roughly 6 months
# but not for files with dates more than 1-2 hours in the future
if ($year * 12 + $mon > $thisyear * 12 + $thismon - 7 &&
$year * 12 + $mon <= $thisyear * 12 + $thismon &&
! (($year * 12 + $mon) * 31 + $day ==
($thisyear * 12 + $thismon) * 31 + $thisday &&
$hour > $thishour + 2)) {
return "$month $day $hour:$min";
} else {
return "$month $day $year";
}
}
# Y2K bug.
# Date: Mon, 27 Mar 100 16:30:47 +0000 (GMT)
if (/(\d\d?) ([A-Z][a-z][a-z]) (1?\d\d) (\d\d?):(\d\d)/) {
$day = $1;
$month = $2;
$mon = index($mstring,$month) / 3;
$year = 1900 + $3;
$hour = $4;
$min = $5;
if ($year < 1970) {
$year += 100;
}
if ($year * 12 + $mon > $thisyear * 12 + $thismon - 7 &&
$year * 12 + $mon <= $thisyear * 12 + $thismon &&
! (($year * 12 + $mon) * 31 + $day ==
($thisyear * 12 + $thismon) * 31 + $thisday &&
$hour > $thishour + 2)) {
return "$month $day $hour:$min";
} else {
return "$month $day $year";
}
}
# AOLMail(SM).
# Date: Sat Jul 01 10:06:06 2000
if (/([A-Z][a-z][a-z]) (\d\d?) (\d\d?):(\d\d)(:\d\d)? (\d\d\d\d)/) {
$month = $1;
$mon = index($mstring,$month) / 3;
$day = $2;
$hour = $3;
$min = $4;
$year = $6;
if ($year * 12 + $mon > $thisyear * 12 + $thismon - 7 &&
$year * 12 + $mon <= $thisyear * 12 + $thismon &&
! (($year * 12 + $mon) * 31 + $day ==
($thisyear * 12 + $thismon) * 31 + $thisday &&
$hour > $thishour + 2)) {
return "$month $day $hour:$min";
} else {
return "$month $day $year";
}
}
# Fallback
return $fallback;
}
}
sub process_header {
while (<IN>) {
$size+=length;
s/\r$//;
last if /^$/;
die "unexpected EOF\n" if eof;
if (/^date:\s(.*)$/i) {
$date=&$parse_date($1);
} elsif (/^subject:\s(.*)$/i) {
$subj=lc($1);
$subj=~ s/^(re:\s?)+//gi; # no leading Re:
$subj=~ tr/a-zA-Z0-9//cd; # strip all "special" characters
} elsif (/^from:\s.*?(\w+)\@/i) {
$from=$1;
} elsif (/^to:\s.*?(\w+)\@/i) {
$to=lc($1);
}
}
}
sub print_dir_line {
$from=$to if ($from eq $user); # otherwise, it would look pretty boring
$date=localtime(time) if (!defined $date);
printf "-r-------- 1 $< $< %d %s %3.3d_%.25s\n",
$size, $date, $msg_nr, "${from}_${subj}";
}
sub mailfs_list {
my $blank = 1;
$user=$ENV{USER}||getlogin||getpwuid($<) || "nobody";
while(<IN>) {
s/\r$//;
if($blank && /^from\s+\w+(\.\w+)*@/i) { # Start of header
print_dir_line unless (!$msg_nr);
$size=length;
$msg_nr++;
($from,$to,$subj,$date)=("none","none","none", "01-01-80");
process_header;
$line=$blank=0;
} else {
$size+=length;
$line++;
$blank= /^$/;
}
}
print_dir_line unless (!$msg_nr);
exit 0;
}
sub mailfs_copyout {
my($source,$dest)=@_;
exit 1 unless (open STDOUT, ">$dest");
($nr)= ($source =~ /^(\d+)/); # extract message number from "filename"
my $blank = 1;
while(<IN>) {
s/\r$//;
if($blank && /^from\s+\w+(\.\w+)*@/i) {
$msg_nr++;
exit(0) if ($msg_nr > $nr);
$blank= 0;
} else {
$blank= /^$/;
}
print if ($msg_nr == $nr);
}
}
# main {
exit 1 unless ($#ARGV >= 1);
$msg_nr=0;
$cmd=shift;
$mbox_name=shift;
my $mbox_qname = quotemeta ($mbox_name);
$_=`$file $mbox_qname`;
if (/gzip/) {
exit 1 unless (open IN, "$zcat $mbox_qname|");
} elsif (/bzip/) {
exit 1 unless (open IN, "$bzcat $mbox_qname|");
} elsif (/lzip/) {
exit 1 unless (open IN, "$lzipcat $mbox_qname|");
} elsif (/lz4/) {
exit 1 unless (open IN, "$lz4cat $mbox_qname|");
} elsif (/lzma/) {
exit 1 unless (open IN, "$lzcat $mbox_qname|");
} elsif (/xz/) {
exit 1 unless (open IN, "$xzcat $mbox_qname|");
} elsif (/zst/) {
exit 1 unless (open IN, "$zstdcat $mbox_qname|");
} else {
exit 1 unless (open IN, "<$mbox_name");
}
umask 077;
if($cmd eq "list") {
$now = time;
$_ = localtime($now);
/^... (... [ \d]\d \d\d:\d\d):\d\d \d\d\d\d$/;
$fallback = $1;
$nowstring=`date "+%Y %m %d %H"`;
($thisyear, $thismon, $thisday, $thishour) = split(/ /, $nowstring);
&mailfs_list;
exit 0;
}
elsif($cmd eq "copyout") { &mailfs_copyout(@ARGV); exit 0; }
exit 1;
|
