#!/usr/bin/perl
#
# MDaemon msg to mailbox mail file converter
# Usage: msg2mbox mail.msg
# Suggested use: ls -c1 *.msg | awk '{system("msg2mbox "$1)}' >> mail.mbox
#
# msg2mbox utility by Artem Litvinovich 


use strict;
die "Must specify msg file.\nUsage: msg2mbox file.msg > file.mbox\n" unless($ARGV[0]);

open(MSG,"<$ARGV[0]") || die("Could not open");
my($adr,$dt) = ();
while(my $line = <MSG>) {
    chomp($line);
    my($fld,$nfo) = split(':',$line,2);
    $adr = $nfo if($fld =~ /^Return-path/);
    $dt = $nfo if($fld =~ /^Date/);
    $adr = "__SKIP" if($line =~ /^Encrypted\s+By\s+MDaemon/);
    last if(($adr eq "__SKIP") or ($adr and $dt));
}

#filter encrypted messages
if($adr eq "__SKIP") {
    close(MSG);
    exit 1;
}

#filter out msft junk
$adr = join ' ',split /\s/,$adr;
$dt = join ' ',split /\s/,$dt;

#kill spaces
$adr =~ s/\s//;

#kill surrounding brackets
$adr =~ s/<(.+)>/$1/;

#kill outside spaces
$dt =~ s/^\s*//;

#kill commas
$dt =~ s/,//;

#set dummy vals if info not found
$adr = "unknown\@uknown.com" if(!$adr);
$dt = "Mon, 1 Jan 2000 01:00:00" if(!$dt);

#reformat date
my($dw,$dat,$mo,$yr,$tm,$adj) = split(/\s/,$dt);
$dt = "$dw $mo $dat $tm $yr";

print "From $adr $dt\n";
seek(MSG,0,0);
while(my $line = <MSG>) {
    $line =~ s/\r//g; #kill ^M
    print $line;
}
close(MSG);