85 lines
2.0 KiB
Perl
Executable File
85 lines
2.0 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
#
|
|
# Copyright (C) 2001-2023 Graeme Walker <graeme_walker@users.sourceforge.net>
|
|
#
|
|
# Copying and distribution of this file, with or without modification,
|
|
# are permitted in any medium without royalty provided the copyright
|
|
# notice and this notice are preserved. This file is offered as-is,
|
|
# without any warranty.
|
|
# ===
|
|
#
|
|
# emailrelay-set-from.pl
|
|
#
|
|
# An example E-MailRelay "--filter" script that edits the content originator
|
|
# fields (ie. From, Sender and Reply-To) to a fixed value.
|
|
#
|
|
# Also consider setting the envelope-from field by editing the envelope
|
|
# file.
|
|
#
|
|
# See also: emailrelay-set-from.js, RFC-2822
|
|
#
|
|
|
|
use strict ;
|
|
use FileHandle ;
|
|
$SIG{__DIE__} = sub { (my $e = join(" ",@_)) =~ s/\n/ /g ; print "<<error: $e>>\n" ; exit 99 } ;
|
|
|
|
# originator fields (RFC-2822 3.6.2)
|
|
my $new_from = 'noreply@example.com' ;
|
|
my $new_sender = '' ;
|
|
my $new_reply_to = $new_from ;
|
|
|
|
my $content = $ARGV[0] or die "usage error\n" ;
|
|
|
|
my $in = new FileHandle( $content , "r" ) or die ;
|
|
my $out = new FileHandle( "$content.tmp" , "w" ) or die ;
|
|
my $in_body = undef ;
|
|
my $in_edit = undef ;
|
|
while(<$in>)
|
|
{
|
|
if( $in_body )
|
|
{
|
|
print $out $_ ;
|
|
}
|
|
else
|
|
{
|
|
chomp( my $line = $_ ) ;
|
|
$line =~ s/\r$// ;
|
|
|
|
$in_body = 1 if ( $line eq "" ) ;
|
|
my $is_from = ( $line =~ m/^From:/i ) ;
|
|
my $is_sender = ( $line =~ m/^Sender:/i ) ;
|
|
my $is_reply_to = ( $line =~ m/^Reply-To:/i ) ;
|
|
|
|
if( $in_body )
|
|
{
|
|
print $out "\r\n" ;
|
|
}
|
|
elsif( $is_from && defined($new_from) )
|
|
{
|
|
$in_edit = 1 ;
|
|
print $out "From: $new_from\r\n" ;
|
|
}
|
|
elsif( $is_sender && defined($new_sender) )
|
|
{
|
|
$in_edit = 1 ;
|
|
print $out "Sender: $new_sender\r\n" unless $new_sender eq "" ;
|
|
}
|
|
elsif( $is_reply_to && defined($new_reply_to) )
|
|
{
|
|
$in_edit = 1 ;
|
|
print $out "Reply-To: $new_reply_to\r\n" ;
|
|
}
|
|
elsif( $in_edit && $line =~ m/^[ \t]/ ) # original header was folded
|
|
{
|
|
}
|
|
else
|
|
{
|
|
$in_edit = undef ;
|
|
print $out $line , "\r\n" ;
|
|
}
|
|
}
|
|
}
|
|
$out->close() or die ;
|
|
rename( "$content.tmp" , $content ) or die ;
|
|
exit 0 ;
|