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package VLDAP::Server; |
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|
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use strict; |
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use warnings; |
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|
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use Net::LDAP::Constant qw( |
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LDAP_SUCCESS |
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LDAP_STRONG_AUTH_NOT_SUPPORTED |
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LDAP_UNAVAILABLE |
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LDAP_OPERATIONS_ERROR |
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); |
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use Net::LDAP::Server; |
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use Net::LDAP::Filter; |
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use base qw(Net::LDAP::Server); |
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use fields qw(upstream); |
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|
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use URI::Escape; # uri_escape |
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use IO::Socket::INET; |
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use IO::Select; |
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|
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use Data::Dump qw/dump/; |
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|
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=head1 NAME |
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|
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A3C::LDAP::Server |
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|
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=cut |
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|
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=head1 DESCRIPTION |
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|
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Provide LDAP server functionality for L<A3C> somewhat similar to C<slapo-rwm> |
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|
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=head1 METHODS |
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|
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=head2 run |
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|
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my $pid = A3C::LDAP::Server->run({ port => 1389, fork => 0 }); |
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|
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=cut |
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|
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our $pids; |
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our $cache; |
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|
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sub cache { |
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return $cache if $cache; |
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$cache = new A3C::Cache->new({ instance => '', dir => 'ldap' }); |
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} |
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|
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sub run { |
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my $self = shift; |
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|
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my $args = shift; |
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# default LDAP port |
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my $port = $args->{port} ||= 1389; |
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|
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if ( $args->{fork} ) { |
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defined(my $pid = fork()) or die "Can't fork: $!"; |
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if ( $pid ) { |
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$pids->{ $port } = $pid; |
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warn "# pids = ",dump( $pids ); |
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sleep 1; |
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return $pid; |
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} |
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} |
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|
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my $sock = IO::Socket::INET->new( |
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Listen => 5, |
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Proto => 'tcp', |
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Reuse => 1, |
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LocalPort => $port, |
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) or die "can't listen on port $port: $!\n"; |
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|
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warn "LDAP server listening on port $port\n"; |
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|
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my $sel = IO::Select->new($sock) or die "can't select socket: $!\n"; |
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my %Handlers; |
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while (my @ready = $sel->can_read) { |
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foreach my $fh (@ready) { |
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if ($fh == $sock) { |
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# let's create a new socket |
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my $psock = $sock->accept; |
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$sel->add($psock); |
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$Handlers{*$psock} = A3C::LDAP::Server->new($psock); |
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} else { |
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my $result = $Handlers{*$fh}->handle; |
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if ($result) { |
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# we have finished with the socket |
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$sel->remove($fh); |
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$fh->close; |
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delete $Handlers{*$fh}; |
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} |
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} |
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} |
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} |
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} |
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|
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=head2 stop |
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|
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my $stopped_pids = A3C::LDAP::Server->stop; |
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|
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=cut |
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|
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sub stop { |
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warn "## stop pids = ",dump( $pids ); |
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return unless $pids; |
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my $stopped = 0; |
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foreach my $port ( keys %$pids ) { |
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my $pid = delete($pids->{$port}) or die "no pid?"; |
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warn "# Shutdown LDAP server at port $port pid $pid\n"; |
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kill(9,$pid) or die "can't kill $pid: $!"; |
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waitpid($pid,0) or die "waitpid $pid: $!"; |
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$stopped++; |
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} |
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warn "## stopped $stopped processes\n"; |
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return $stopped; |
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} |
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|
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use constant RESULT_OK => { |
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'matchedDN' => '', |
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'errorMessage' => '', |
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'resultCode' => LDAP_SUCCESS |
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}; |
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|
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# constructor |
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sub new { |
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my ($class, $sock) = @_; |
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my $self = $class->SUPER::new($sock); |
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printf "Accepted connection from: %s\n", $sock->peerhost(); |
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return $self; |
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} |
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|
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# the bind operation |
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sub bind { |
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my ($self,$req) = @_; |
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|
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warn "## bind req = ",dump($req); |
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|
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defined($req->{authentication}->{simple}) or return { |
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matchedDN => '', |
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errorMessage => '', |
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resultCode => LDAP_STRONG_AUTH_NOT_SUPPORTED, |
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}; |
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|
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$self->{upstream} ||= A3C::LDAP->new->ldap or return { |
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matchedDN => '', |
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errorMessage => $@, |
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resultCode => LDAP_UNAVAILABLE, |
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}; |
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|
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# warn "## upstream = ",dump( $self->{upstream} ); |
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# warn "upstream not Net::LDAP but ",ref($self->{upstream}) unless ref($self->{upstream}) eq 'Net::LDAP'; |
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|
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my $msg; |
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|
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# FIXME we would need to unbind because A3C::LDAP binds us automatically, but that doesn't really work |
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#$msg = $self->{upstream}->unbind; |
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#warn "# unbind msg = ",dump( $msg ); |
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|
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$msg = $self->{upstream}->bind( |
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dn => $req->{name}, |
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password => $req->{authentication}->{simple} |
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); |
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|
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#warn "# bind msg = ",dump( $msg ); |
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if ( $msg->code != LDAP_SUCCESS ) { |
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warn "ERROR: ", $msg->code, ": ", $msg->server_error, "\n"; |
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return { |
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matchedDN => '', |
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errorMessage => $msg->server_error, |
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resultCode => $msg->code, |
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}; |
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} |
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|
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return RESULT_OK; |
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} |
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|
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# the search operation |
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sub search { |
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my ($self,$req) = @_; |
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|
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warn "## search req = ",dump( $req ); |
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|
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if ( ! $self->{upstream} ) { |
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warn "search without bind"; |
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return { |
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matchedDN => '', |
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errorMessage => 'dude, bind first', |
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resultCode => LDAP_OPERATIONS_ERROR, |
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}; |
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} |
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|
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my $filter; |
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if (defined $req->{filter}) { |
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# $req->{filter} is a ASN1-decoded tree; luckily, this is exactly the |
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# internal representation Net::LDAP::Filter uses. [FIXME] Eventually |
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# Net::LDAP::Filter should provide a corresponding constructor. |
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bless($req->{filter}, 'Net::LDAP::Filter'); |
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$filter = $req->{filter}->as_string; |
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# $filter = '(&' . $req->{filter}->as_string |
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# . '(objectClass=hrEduPerson)(host=aai.irb.hr))'; |
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} |
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|
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warn "search upstream for $filter\n"; |
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|
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my $search = $self->{upstream}->search( |
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base => $req->{baseObject}, |
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scope => $req->{scope}, |
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deref => $req->{derefAliases}, |
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sizelimit => $req->{sizeLimit}, |
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timelimit => $req->{timeLimit}, |
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typesonly => $req->{typesOnly}, |
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filter => $filter, |
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attrs => $req->{attributes}, |
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raw => qr/.*/, |
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); |
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|
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# warn "# search = ",dump( $search ); |
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|
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if ( $search->code != LDAP_SUCCESS ) { |
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warn "ERROR: ",$search->code,": ",$search->server_error; |
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return { |
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matchedDN => '', |
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errorMessage => $search->server_error, |
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resultCode => $search->code, |
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}; |
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}; |
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|
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my @entries = $search->entries; |
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warn "## got ", $search->count, " entries for $filter\n"; |
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foreach my $entry (@entries) { |
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# $entry->changetype('add'); # Don't record changes. |
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# foreach my $attr ($entry->attributes) { |
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# if ($attr =~ /;lang-en$/) { |
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# $entry->delete($attr); |
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# } |
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# } |
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} |
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|
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warn "## entries = ",dump( @entries ); |
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|
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$self->cache->write_cache( \@entries, uri_escape( $filter )); |
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|
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return RESULT_OK, @entries; |
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} |
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|
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# the rest of the operations will return an "unwilling to perform" |
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|
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1; |
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