/usr/share/doc/claws-mail/tools/gif2xface.pl is in claws-mail-tools 3.9.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | #!/usr/bin/perl
#
# gif2xface -- converts a 48x48 GIF file to an X-Face mail header
#
# Author: Ricardo Mones <ricardo@mones.org>
#
# This is a hack over the original xbm2face script. The xbm files generated
# by some graphic tools (notably The Gimp version 1.2.1) aren't suitable to
# feed the compface program. Starting with a GIF and using some filters does
# the trick. A little help screen also added.
# This requieres giftopnm and pbmtoxbm (both in libgr-progs package).
#
# The original xbm2face author's comment follows:
#
# xbm2xface -- converts a 48x48 xbm file to an X-Face mail header
#
# Author: Jonathan Stigelman <Stig@hackvan.com>
#
# URL: http://hackvan.com/pub/stig/src/linux/
# FTP: hackvan.com:/pub/stig/src/linux/
#
# This is a Perl script that I wrote to convert 48x48 xbm (X bitmap) files
# into X-Face: headers suitable for inclusion in RFC822 internet
# electronic mail. A 48x48 bitmap is awfully small, but X-Faces are still
# good enough for other people to visually establish your identity in
# email without having to carefully read your name.
#
# Basically, it gets you noticed...either as the person with the cool
# X-Face or as that jerk with modem noise in all of his email messages.
#
# People will start looking over your shoulder and say "Hey Cool! How'd
# you do that?" When they do, you just send 'em to my URL for this
# utility and tell 'em to upgrade to a real mail reader: XEmacs and VM.
#
# It also requires the 'compface' utility.
#
sub check_for_help {
local($param) = @_;
# is a filter, no args must be present
if (defined($param))
{
print "\n", 'gif2xface -- A filter for converting an 48x48 gif into a xface string', "\n\n" ;
print 'Usage: gif2xface < input.gif > output.xface', "\n\n";
exit;
}
}
sub reverse_byte {
local($byte) = @_;
local($n, $b);
for ( $b= $n= 0; $b<8; ++$b) {
$n |= (($byte & 1) << (7-$b));
$byte >>= 1;
}
return($n);
}
&check_for_help($ARGV[0]);
# printf "0x%02x\n", &reverse_byte(0xF0);
$ra = rand;
$tf = "/tmp/gif2xface.$ra";
open(GP,"|giftopnm|pbmtoxbm>$tf");
while (<>) {
print GP $_;
}
close(GP);
open(GP,"<$tf");
<GP>;
m/^#define \w+_width (\d+)/ && ($width=$1);
<GP>;
m/^#define \w+_height (\d+)/ && ($height=$1);
<GP>;
m/^static.* = \{/ && (( $width == 48 && $height == 48 )
|| die $0, ": sorry, xfaces must be 48x48 pixels" );
$| = 1; print "X-Face:";
open(CF,"|compface");
while (<GP>) {
$st="";
while (s/(0x..)(,|\};)\s*//) {
$st .= sprintf("0x%02x, ", &reverse_byte(eval($1)));
}
$_=$st;
s/(0x..), 0x(..)/\1\2/g;
s/\s*(0x...., 0x...., 0x....)(,|\};)\s/\1,\n/g;
print CF $_;
}
close (CF);
close (GP);
unlink $tf;
|