# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
+# It's modified by Dobrica Pavlinusic <dpavlin@rot13.org> to include following:
+#
+# * rewrite LDAP bind request cn: username@domain.com -> uid=username,dc=domain,dc=com
+# * rewrite search responses:
+# ** expand key:value pairs from hrEduPersonUniqueNumber into hrEduPersonUniqueNumber_key
+# ** augment response with yaml/dn.yaml data (for external data import)
use strict;
use warnings;
use IO::Select;
use IO::Socket;
+use IO::Socket::SSL;
use warnings;
use Data::Dump qw/dump/;
use Convert::ASN1 qw(asn_read);
use Net::LDAP::ASN qw(LDAPRequest LDAPResponse);
-our $VERSION = '0.2';
+our $VERSION = '0.3';
use fields qw(socket target);
use YAML qw/LoadFile/;
+my $debug = 1;
+
+my $config = {
+ yaml_dir => './yaml/',
+ listen => shift @ARGV || 'localhost:1389',
+ upstream_ldap => 'ldap.ffzg.hr',
+ upstream_ssl => 1,
+ overlay_prefix => 'ffzg-',
+ log_file => 'log',
+
+};
+
+my $log_fh;
+
+sub log {
+ if ( ! $log_fh ) {
+ open($log_fh, '>>', $config->{log_file}) || die "can't open ", $config->{log_file},": $!";
+ print $log_fh "# " . time;
+ }
+ $log_fh->autoflush(1);
+ print $log_fh join("\n", @_),"\n";
+}
+
+BEGIN {
+ $SIG{'__WARN__'} = sub { warn @_; main::log(@_); }
+}
+
+
+if ( ! -d $config->{yaml_dir} ) {
+ warn "DISABLE ", $config->{yaml_dir}," data overlay";
+}
+
+warn "# config = ",dump( $config );
+
sub handle {
my $clientsocket=shift;
my $serversocket=shift;
# read from client
asn_read($clientsocket, my $reqpdu);
- log_request($reqpdu);
-
- return 1 unless $reqpdu;
+ if ( ! $reqpdu ) {
+ warn "WARNING no reqpdu\n";
+ return 1;
+ }
+ $reqpdu = log_request($reqpdu);
# send to server
print $serversocket $reqpdu or die "Could not send PDU to server\n ";
sub log_request {
my $pdu=shift;
- print '-' x 80,"\n";
- print "Request ASN 1:\n";
- Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
- print "Request Perl:\n";
+# print '-' x 80,"\n";
+# print "Request ASN 1:\n";
+# Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
+# print "Request Perl:\n";
my $request = $LDAPRequest->decode($pdu);
- print dump($request);
+ warn "## request = ",dump($request);
+
+ if ( defined $request->{bindRequest} ) {
+ if ( $request->{bindRequest}->{name} =~ m{@} ) {
+ my $old = $request->{bindRequest}->{name};
+ $request->{bindRequest}->{name} =~ s/[@\.]/,dc=/g;
+ $request->{bindRequest}->{name} =~ s/^/uid=/;
+ warn "rewrite bind cn $old -> ", $request->{bindRequest}->{name};
+ Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
+ $pdu = $LDAPRequest->encode($request);
+ Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
+ }
+ }
+
+ return $pdu;
}
sub log_response {
my $pdu=shift;
- print '-' x 80,"\n";
- print "Response ASN 1:\n";
- Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
- print "Response Perl:\n";
+# print '-' x 80,"\n";
+# print "Response ASN 1:\n";
+# Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
+# print "Response Perl:\n";
my $response = $LDAPResponse->decode($pdu);
if ( defined $response->{protocolOp}->{searchResEntry} ) {
my $uid = $response->{protocolOp}->{searchResEntry}->{objectName};
- warn "## SEARCH $uid";
+ warn "## objectName $uid";
+
+ my @attrs;
-if(0) {
map {
- if ( $_->{type} eq 'postalAddress' ) {
- $_->{vals} = [ 'foobar' ];
+ if ( $_->{type} eq 'hrEduPersonUniqueNumber' ) {
+ foreach my $val ( @{ $_->{vals} } ) {
+ next if $val !~ m{.+:.+};
+ my ( $n, $v ) = split(/\s*:\s*/, $val );
+ push @attrs, { type => $_->{type} . '_' . $n, vals => [ $v ] };
+ }
}
} @{ $response->{protocolOp}->{searchResEntry}->{attributes} };
-}
- my $path = "yaml/$uid.yaml";
+ warn "# ++ attrs ",dump( @attrs );
+
+ push @{ $response->{protocolOp}->{searchResEntry}->{attributes} }, $_ foreach @attrs;
+
+ my $path = $config->{yaml_dir} . "$uid.yaml";
if ( -e $path ) {
my $data = LoadFile($path);
warn "# yaml = ",dump($data);
foreach my $type ( keys %$data ) {
my $vals = $data->{$type};
- $vals =~ s{#\s*$}{};
-
- my @vals = split(/\s*#\s*/, $vals);
- push @{ $response->{protocolOp}->{searchResEntry}->{attributes} },
- { type => "ffzg-$type", vals => [ @vals ] };
+ push @{ $response->{protocolOp}->{searchResEntry}->{attributes} }, {
+ type => $config->{overlay_prefix} . $type,
+ vals => ref($vals) eq 'ARRAY' ? $vals : [ $vals ],
+ };
}
}
$pdu = $LDAPResponse->encode($response);
}
- print dump($response);
+ warn "## response = ", dump($response);
return $pdu;
}
Listen => 5,
Proto => 'tcp',
Reuse => 1,
- LocalPort => 1389
-);
-
-
-my $targetsock = new IO::Socket::INET (
- Proto => 'tcp',
- PeerAddr => 'ldap.ffzg.hr',
- PeerPort => 389,
-);
+ LocalAddr => $config->{listen},
+) || die "can't open listen socket: $!";
+
+
+my $targetsock = $config->{upstream_ssl}
+ ? IO::Socket::INET->new(
+ Proto => 'tcp',
+ PeerAddr => $config->{upstream_ldap},
+ PeerPort => 389,
+ )
+ : IO::Socket::SSL->new( $config->{upstream_ldap} . ':ldaps')
+ || die "can't open upstream socket: $!";
run_proxy($listenersock,$targetsock);