/[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 19 by dpavlin, Mon Mar 16 09:46:47 2009 UTC revision 66 by dpavlin, Sun Feb 21 01:02:47 2010 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-',
35    #       log_file => 'log/ldap-rewrite.log',
36    
37  };  };
38    
39    my $log_fh;
40    
41    sub log {
42            return unless $config->{log_file};
43    
44            if ( ! $log_fh ) {
45                    open($log_fh, '>>', $config->{log_file}) || die "can't open ", $config->{log_file},": $!";
46                    print $log_fh "# " . time;
47            }
48            $log_fh->autoflush(1);
49            print $log_fh join("\n", @_),"\n";
50    }
51    
52    BEGIN {
53            $SIG{'__WARN__'} = sub { warn @_; main::log(@_); }
54    }
55    
56    
57  if ( ! -d $config->{yaml_dir} ) {  if ( ! -d $config->{yaml_dir} ) {
58          warn "DISABLE ", $config->{yaml_dir}," data overlay";          warn "DISABLE ", $config->{yaml_dir}," data overlay";
59  }  }
# Line 39  sub handle { Line 66  sub handle {
66    
67          # read from client          # read from client
68          asn_read($clientsocket, my $reqpdu);          asn_read($clientsocket, my $reqpdu);
69          log_request($reqpdu);          if ( ! $reqpdu ) {
70                    warn "WARNING no reqpdu\n";
71          return 1 unless $reqpdu;                  return 1;
72            }
73            $reqpdu = log_request($reqpdu);
74    
75          # send to server          # send to server
76          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 63  sub handle { Line 92  sub handle {
92  sub log_request {  sub log_request {
93          my $pdu=shift;          my $pdu=shift;
94    
95          print '-' x 80,"\n";  #       print '-' x 80,"\n";
96          print "Request ASN 1:\n";  #       print "Request ASN 1:\n";
97          Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);  #       Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
98          print "Request Perl:\n";  #       print "Request Perl:\n";
99          my $request = $LDAPRequest->decode($pdu);          my $request = $LDAPRequest->decode($pdu);
100          print dump($request);          warn "## request = ",dump($request);
101    
102            if ( defined $request->{bindRequest} ) {
103                    if ( $request->{bindRequest}->{name} =~ m{@} ) {
104                            my $old = $request->{bindRequest}->{name};
105                            $request->{bindRequest}->{name} =~ s/[@\.]/,dc=/g;
106                            $request->{bindRequest}->{name} =~ s/^/uid=/;
107                            warn "rewrite bind cn $old -> ", $request->{bindRequest}->{name};
108                            Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
109                            $pdu = $LDAPRequest->encode($request);
110                            Convert::ASN1::asn_hexdump(\*STDOUT,$pdu) if $debug;
111                    }
112            }
113    
114            return $pdu;
115  }  }
116    
117  sub log_response {  sub log_response {
118          my $pdu=shift;          my $pdu=shift;
119    
120          print '-' x 80,"\n";  #       print '-' x 80,"\n";
121          print "Response ASN 1:\n";  #       print "Response ASN 1:\n";
122          Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);  #       Convert::ASN1::asn_hexdump(\*STDOUT,$pdu);
123          print "Response Perl:\n";  #       print "Response Perl:\n";
124          my $response = $LDAPResponse->decode($pdu);          my $response = $LDAPResponse->decode($pdu);
125    
126          if ( defined $response->{protocolOp}->{searchResEntry} ) {          if ( defined $response->{protocolOp}->{searchResEntry} ) {
127                  my $uid = $response->{protocolOp}->{searchResEntry}->{objectName};                  my $uid = $response->{protocolOp}->{searchResEntry}->{objectName};
128                  warn "## SEARCH $uid";                  warn "## objectName $uid";
129    
130                  my @attrs;                  my @attrs;
131    
# Line 108  sub log_response { Line 151  sub log_response {
151                          foreach my $type ( keys %$data ) {                          foreach my $type ( keys %$data ) {
152    
153                                  my $vals = $data->{$type};                                  my $vals = $data->{$type};
                                 $vals =~ s{#\s*$}{};  
                                   
                                 my @vals = split(/\s*#\s*/, $vals);  
154    
155                                  push @{ $response->{protocolOp}->{searchResEntry}->{attributes} },                                  push @{ $response->{protocolOp}->{searchResEntry}->{attributes} }, {
156                                          { type => $config->{overlay_prefix} . $type, vals => [ @vals ] };                                          type => $config->{overlay_prefix} . $type,
157                                            vals => ref($vals) eq 'ARRAY' ? $vals : [ $vals ],
158                                    };
159                          }                          }
160                  }                  }
161    
162                  $pdu = $LDAPResponse->encode($response);                  $pdu = $LDAPResponse->encode($response);
163          }          }
164    
165          print dump($response);          warn "## response = ", dump($response);
166    
167          return $pdu;          return $pdu;
168  }  }
# Line 159  my $listenersock = IO::Socket::INET->new Line 201  my $listenersock = IO::Socket::INET->new
201          Proto => 'tcp',          Proto => 'tcp',
202          Reuse => 1,          Reuse => 1,
203          LocalAddr => $config->{listen},          LocalAddr => $config->{listen},
204  );  ) || die "can't open listen socket: $!";
205    
206    
207  my $targetsock = $config->{upstream_ssl}  my $targetsock = $config->{upstream_ssl}
# Line 169  my $targetsock = $config->{upstream_ssl} Line 211  my $targetsock = $config->{upstream_ssl}
211                  PeerPort => 389,                  PeerPort => 389,
212          )          )
213          : IO::Socket::SSL->new( $config->{upstream_ldap} . ':ldaps')          : IO::Socket::SSL->new( $config->{upstream_ldap} . ':ldaps')
214          ;          || die "can't open upstream socket: $!";
215    
216  run_proxy($listenersock,$targetsock);  run_proxy($listenersock,$targetsock);
217    
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