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Edit File: gpgkeys_mailto

#!/usr/bin/perl -w

# gpgkeys_mailto - talk to a email keyserver 
# Copyright (C) 2001, 2002 Free Software Foundation, Inc.
#
# This file is part of GnuPG.
#
# GnuPG is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# GnuPG is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
use Getopt::Std;
$Getopt::Std::STANDARD_HELP_VERSION=1;
$sendmail="/usr/sbin/sendmail -t";

###

sub VERSION_MESSAGE ()
{
    print STDOUT "gpgkeys_mailto (GnuPG) 1.4.20\n";
}

sub HELP_MESSAGE ()
{
    print STDOUT <<EOT

--help     Print this help
--version  Print the version
-o FILE    Write output to FILE
EOT
}

getopts('o:');

if(defined($opt_o))
{
    open(STDOUT,">$opt_o") || die "Can't open output file $opt_o\n";
}

if(@ARGV)
{
    open(STDIN,$ARGV[0]) || die "Can't open input file $ARGV[0]\n";
}

while(<STDIN>)
{
    last if($_ eq "\n");

if(/^COMMAND (\S+)/)
    {
	$command=$1;
    }

if(/^OPAQUE (\S+)/)
    {
	$address=$1;
    }

if(/^PROGRAM (\S+)/)
    {
	$program=$1;
    }

if(/^OPTION (\S+)/)
    {
	if($1=~/^verbose$/i)
	{
	    $verbose++;
	}
	elsif($1=~/^no-verbose$/i)
	{
	    $verbose--;
	}
	elsif($1=~/^mail-from=(.+)$/i)
	{
	    $from=$1;
	}
	elsif($1=~/^no-mail-from$/i)
	{
	    undef $from;
	}

}
}

if(!defined($from))
{
    ($login,$name)=(getpwuid($<))[0,6];
    $from="$name <$login>";
}

$program="(unknown)" if(!defined($program));

if(!defined($address))
{
    print STDERR "gpgkeys: no address provided\n";
    exit(1);
}

while(<STDIN>)
{
    last if($_ eq "\n");

chomp;

push(@keys,$_);
}

# Send response

print "VERSION 1\n";
print "OPTION OUTOFBAND\n\n";

# Email keyservers get and search the same way

if($command=~/get/i || $command=~/search/i)
{
    if($command=~/search/i)
    {
	print "COUNT 0\n";
    }

foreach $key (@keys)
    {
	open(MAIL,"|$sendmail") || die "ERROR: Can't open $sendmail\n";
	print MAIL "From: $from\n";
	print MAIL "To: $address\n";
	if($command=~/get/i)
	{
	    # mail keyservers don't like long-form keyids

if(substr($key,0,2) eq "0x")
	    {
		$key=substr($key,2);
	    }

if(length($key)>8)
	    {
		$key=substr($key,-8);
	    }

print MAIL "Subject: GET 0x$key\n\n";
	}
	else
	{
	    print MAIL "Subject: GET $key\n\n";
	}
	print MAIL "GnuPG $program email keyserver request\n";
	close(MAIL);

# Tell GnuPG not to expect a key
	print "KEY $key OUTOFBAND\n";

if($verbose)
	{
	    print STDERR "gpgkeys: key $key requested from $address\n";
	}
    }
}

if($command=~/send/i)
{
    while(!eof(STDIN))
    {
	open(MAIL,"|$sendmail") || die "ERROR: Can't open $sendmail\n";
	print MAIL "From: $name <$login>\n";
	print MAIL "To: $address\n";
	print MAIL "Subject: ADD\n\n";

while(<STDIN>)
	{
	    if(/^KEY (\S+) BEGIN$/)
	    {
		$key=$1;
		last;
	    }
	}

while(<STDIN>)
	{
	    if(/^KEY \S+ END$/)
	    {
		last;
	    }

print MAIL;
	}

close(MAIL);

if($verbose)
	{
	    print STDERR "gpgkeys: key $key sent to $address\n";
	}
    }
}

# Local Variables: 
# mode:perl
# End: