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#!/usr/bin/perl
# Copyright (C) 2007, 2009 Free Software Foundation
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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.
# generate-cacerts.pl generates a gkeytool keystore named 'cacerts'
# from OpenSSL's certificate bundle.
# First extract each of OpenSSL's bundled certificates into its own
# aliased filename.
chomp($file=@ARGV[0]);
$file = "/etc/pki/tls/cert.pem" unless $file ne "";
open(CERTS, $file);
@certs = <CERTS>;
close(CERTS);
$pem_file_number = 0;
$writing_cert = 0;
foreach $cert (@certs)
{
if ($cert eq "-----BEGIN CERTIFICATE-----\n")
{
if ($writing_cert != 0)
{
die "$file is malformed.";
}
$pem_file_number++;
# Numbering each file guarantees that cert aliases will be
# unique.
$pem_file_name = "$pem_file_number$cert_alias.pem";
$writing_cert = 1;
open(PEM, ">$pem_file_name");
print PEM $cert;
}
elsif ($cert eq "-----END CERTIFICATE-----\n")
{
$writing_cert = 0;
print PEM $cert;
close(PEM);
}
elsif ($cert =~ /Issuer: /)
{
# Generate an alias using the OU and CN attributes of the
# Issuer field if both are present, otherwise use only the CN
# attribute. The Issuer field must have either the OU or the
# CN attribute.
$_ = $cert;
if ($cert =~ /OU=/)
{
s/Issuer:.*?OU=//;
# Remove other occurrences of OU=.
s/OU=.*CN=//;
# Remove CN= if there were not other occurrences of OU=.
s/CN=//;
}
elsif ($cert =~ /CN=/)
{
s/Issuer:.*CN=//;
}
s/\W//g;
tr/A-Z/a-z/;
$cert_alias = $_
}
else
{
if ($writing_cert == 1)
{
print PEM $cert;
}
}
}
# Check that the correct number of .pem files were produced.
@pem_files = <*.pem>;
if (@pem_files != $pem_file_number)
{
die "Number of .pem files produced does not match".
" number of certs read from $file.";
}
# Now store each cert in the 'cacerts' file using gkeytool.
$certs_written_count = 0;
foreach $pem_file (@pem_files)
{
system "yes | gkeytool@gcc_suffix@ -import -alias `basename $pem_file .pem`".
" -keystore cacerts -storepass '' -file $pem_file".
" 2>&1 >/dev/null";
unlink($pem_file);
$certs_written_count++;
}
# Check that the correct number of certs were added to the keystore.
if ($certs_written_count != $pem_file_number)
{
die "Number of certs added to keystore does not match".
" number of certs read from $file.";
}
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