/[virtual-ldap]/bin/ldap-rewrite.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 27 by dpavlin, Mon Mar 16 18:11:12 2009 UTC revision 61 by dpavlin, Sun Dec 13 17:35:36 2009 UTC
# Line 3  Line 3 
3  # This program is free software; you can redistribute it and/or  # This program is free software; you can redistribute it and/or
4  # modify it under the same terms as Perl itself.  # modify it under the same terms as Perl itself.
5    
6    # It's modified by Dobrica Pavlinusic <dpavlin@rot13.org> to include following:
7    #
8    # * rewrite LDAP bind request cn: username@domain.com -> uid=username,dc=domain,dc=com
9    # * rewrite search responses:
10    # ** expand key:value pairs from hrEduPersonUniqueNumber into hrEduPersonUniqueNumber_key
11    # ** augment response with yaml/dn.yaml data (for external data import)
12    
13  use strict;  use strict;
14  use warnings;  use warnings;
# Line 14  use warnings; Line 20  use warnings;
20  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
21  use Convert::ASN1 qw(asn_read);  use Convert::ASN1 qw(asn_read);
22  use Net::LDAP::ASN qw(LDAPRequest LDAPResponse);  use Net::LDAP::ASN qw(LDAPRequest LDAPResponse);
23  our $VERSION = '0.2';  our $VERSION = '0.3';
24  use fields qw(socket target);  use fields qw(socket target);
25  use YAML qw/LoadFile/;  use YAML qw/LoadFile/;
26    
27    my $debug = 1;
28    
29  my $config = {  my $config = {
30          yaml_dir => './yaml/',          yaml_dir => './yaml/',
31          listen => 'localhost:1389',          listen => shift @ARGV || 'localhost:1389',
32          upstream_ldap => 'ldap.ffzg.hr',          upstream_ldap => 'ldap.ffzg.hr',
33          upstream_ssl => 1,          upstream_ssl => 1,
34          overlay_prefix => 'ffzg-',          overlay_prefix => 'ffzg-',
# Line 31  my $config = { Line 39  my $config = {
39  my $log_fh;  my $log_fh;
40    
41  sub log {  sub log {
42          open($log_fh, '>', $config->{log_file}) || die "can't open ", $config->{log_file},": $!";          if ( ! $log_fh ) {
43                    open($log_fh, '>>', $config->{log_file}) || die "can't open ", $config->{log_file},": $!";
44                    print $log_fh "# " . time;
45            }
46          $log_fh->autoflush(1);          $log_fh->autoflush(1);
47          print $log_fh join("\n", @_),"\n";          print $log_fh join("\n", @_),"\n";
48  }  }
# Line 53  sub handle { Line 64  sub handle {
64    
65          # read from client          # read from client
66          asn_read($clientsocket, my $reqpdu);          asn_read($clientsocket, my $reqpdu);
67          log_request($reqpdu);          if ( ! $reqpdu ) {
68                    warn "WARNING no reqpdu\n";
69          return 1 unless $reqpdu;                  return 1;
70            }
71            $reqpdu = log_request($reqpdu);
72    
73          # send to server          # send to server
74          print $serversocket $reqpdu or die "Could not send PDU to server\n ";          print $serversocket $reqpdu or die "Could not send PDU to server\n ";
# Line 77  sub handle { Line 90  sub handle {
90  sub log_request {  sub log_request {
91          my $pdu=shift;          my $pdu=shift;
92    
93          print '-' x 80,"\n";  #       print '-' x 80,"\n";
94          print "Request ASN 1:\n";  #       print "Request ASN 1:\n";
95          Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);  #       Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
96          print "Request Perl:\n";  #       print "Request Perl:\n";
97          my $request = $LDAPRequest->decode($pdu);          my $request = $LDAPRequest->decode($pdu);
98          print dump($request);          warn "## request = ",dump($request);
99    
100            if ( defined $request->{bindRequest} ) {
101                    if ( $request->{bindRequest}->{name} =~ m{@} ) {
102                            my $old = $request->{bindRequest}->{name};
103                            $request->{bindRequest}->{name} =~ s/[@\.]/,dc=/g;
104                            $request->{bindRequest}->{name} =~ s/^/uid=/;
105                            warn "rewrite bind cn $old -> ", $request->{bindRequest}->{name};
106                            Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
107                            $pdu = $LDAPRequest->encode($request);
108                            Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
109                    }
110            }
111    
112            return $pdu;
113  }  }
114    
115  sub log_response {  sub log_response {
116          my $pdu=shift;          my $pdu=shift;
117    
118          print '-' x 80,"\n";  #       print '-' x 80,"\n";
119          print "Response ASN 1:\n";  #       print "Response ASN 1:\n";
120          Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);  #       Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
121          print "Response Perl:\n";  #       print "Response Perl:\n";
122          my $response = $LDAPResponse->decode($pdu);          my $response = $LDAPResponse->decode($pdu);
123    
124          if ( defined $response->{protocolOp}->{searchResEntry} ) {          if ( defined $response->{protocolOp}->{searchResEntry} ) {
125                  my $uid = $response->{protocolOp}->{searchResEntry}->{objectName};                  my $uid = $response->{protocolOp}->{searchResEntry}->{objectName};
126                  warn "## SEARCH $uid";                  warn "## objectName $uid";
127    
128                  my @attrs;                  my @attrs;
129    
# Line 133  sub log_response { Line 160  sub log_response {
160                  $pdu = $LDAPResponse->encode($response);                  $pdu = $LDAPResponse->encode($response);
161          }          }
162    
163          print dump($response);          warn "## response = ", dump($response);
164    
165          return $pdu;          return $pdu;
166  }  }
# Line 167  sub run_proxy { Line 194  sub run_proxy {
194  }  }
195    
196    
 $ENV{LANG} = 'C'; # so we don't double-encode utf-8 if LANG is utf-8  
   
197  my $listenersock = IO::Socket::INET->new(  my $listenersock = IO::Socket::INET->new(
198          Listen => 5,          Listen => 5,
199          Proto => 'tcp',          Proto => 'tcp',
200          Reuse => 1,          Reuse => 1,
201          LocalAddr => $config->{listen},          LocalAddr => $config->{listen},
202  );  ) || die "can't open listen socket: $!";
203    
204    
205  my $targetsock = $config->{upstream_ssl}  my $targetsock = $config->{upstream_ssl}
# Line 184  my $targetsock = $config->{upstream_ssl} Line 209  my $targetsock = $config->{upstream_ssl}
209                  PeerPort => 389,                  PeerPort => 389,
210          )          )
211          : IO::Socket::SSL->new( $config->{upstream_ldap} . ':ldaps')          : IO::Socket::SSL->new( $config->{upstream_ldap} . ':ldaps')
212          ;          || die "can't open upstream socket: $!";
213    
214  run_proxy($listenersock,$targetsock);  run_proxy($listenersock,$targetsock);
215    
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