Catalyst::Authentication::Store::LDAP::Backend - Catalyst::Authentication::Store::LDAP::Backend documentation

    # you probably just want Store::LDAP under most cases,
    # but if you insist you can instantiate your own store:

    use Catalyst::Authentication::Store::LDAP::Backend;

    use Catalyst qw/
        Authentication
        Authentication::Credential::Password
    /;

    my %config = (
            'ldap_server' => 'ldap1.yourcompany.com',
            'ldap_server_options' => {
                'timeout' => 30,
            },
            'binddn' => 'anonymous',
            'bindpw' => 'dontcarehow',
            'start_tls' => 1,
            'start_tls_options' => {
                'verify' => 'none',
            },
            'user_basedn' => 'ou=people,dc=yourcompany,dc=com',
            'user_filter' => '(&(objectClass=posixAccount)(uid=%s))',
            'user_scope' => 'one',  # or 'sub' for Active Directory
            'user_field' => 'uid',
            'user_search_options' => {
                'deref' => 'always',
            },
            'user_results_filter' => sub { return shift->pop_entry },
            'entry_class' => 'MyApp::LDAP::Entry',
            'user_class' => 'MyUser',
            'use_roles' => 1,
            'role_basedn' => 'ou=groups,dc=yourcompany,dc=com',
            'role_filter' => '(&(objectClass=posixGroup)(member=%s))',
            'role_scope' => 'one',
            'role_field' => 'cn',
            'role_value' => 'dn',
            'role_search_options' => {
                'deref' => 'always',
            },
            'role_search_as_user' => 0,
    );

    our $users = Catalyst::Authentication::Store::LDAP::Backend->new(\%config);

  A) Bind to the directory using the configured binddn and bindpw
  B) Perform a search for the User Object in the directory, using
     user_basedn, user_filter, and user_scope.
  C) Assuming we found the object, we will walk it's attributes
     using L<Net::LDAP::Entry>'s get_value method.  We store the
     results in a hashref. If we do not find the object, then
     undef is returned.
  D) Return a hashref that looks like:

     $results = {
        'ldap_entry' => $entry, # The Net::LDAP::Entry object
        'attributes' => $attributes,
     }

package Catalyst::Authentication::Store::LDAP::Backend;
use base qw( Class::Accessor::Fast );

use strict;
use warnings;

our $VERSION = '1.012';

use Catalyst::Authentication::Store::LDAP::User;
use Net::LDAP;
use Catalyst::Utils ();

BEGIN {
    __PACKAGE__->mk_accessors(
        qw( ldap_server ldap_server_options binddn
            bindpw entry_class user_search_options
            user_filter user_basedn user_scope
            user_attrs user_field use_roles role_basedn
            role_filter role_scope role_field role_value
            role_search_options start_tls start_tls_options
            user_results_filter user_class role_search_as_user
            )
    );
}

sub new {
    my ( $class, $config ) = @_;

    unless ( defined($config) && ref($config) eq "HASH" ) {
        Catalyst::Exception->throw(
            "Catalyst::Authentication::Store::LDAP::Backend needs to be configured with a hashref."
        );
    }
    my %config_hash = %{$config};
    $config_hash{'binddn'}      ||= 'anonymous';
    $config_hash{'user_filter'} ||= '(uid=%s)';
    $config_hash{'user_scope'}  ||= 'sub';
    $config_hash{'user_field'}  ||= 'uid';
    $config_hash{'role_filter'} ||= '(memberUid=%s)';
    $config_hash{'role_scope'}  ||= 'sub';
    $config_hash{'role_field'}  ||= 'cn';
    $config_hash{'use_roles'}   ||= '1';
    $config_hash{'start_tls'}   ||= '0';
    $config_hash{'entry_class'} ||= 'Catalyst::Model::LDAP::Entry';
    $config_hash{'user_class'}  ||= 'Catalyst::Authentication::Store::LDAP::User';
    $config_hash{'role_search_as_user'} ||= 0;

    Catalyst::Utils::ensure_class_loaded($config_hash{'user_class'});
    my $self = \%config_hash;
    bless( $self, $class );
    return $self;
}

sub find_user {
    my ( $self, $authinfo, $c ) = @_;
    return $self->get_user( $authinfo->{id} || $authinfo->{username}, $c );
}

sub get_user {
    my ( $self, $id, $c ) = @_;
    my $user = $self->user_class->new( $self,
        $self->lookup_user($id), $c );
    return $user;
}

sub ldap_connect {
    my ($self) = shift;
    my $ldap;
    if ( defined( $self->ldap_server_options() ) ) {
        $ldap
            = Net::LDAP->new( $self->ldap_server,
            %{ $self->ldap_server_options } )
            or Catalyst::Exception->throw($@);
    }
    else {
        $ldap = Net::LDAP->new( $self->ldap_server )
            or Catalyst::Exception->throw($@);
    }
    if ( defined( $self->start_tls ) && $self->start_tls =~ /(1|true)/i ) {
        my $mesg;
        if ( defined( $self->start_tls_options ) ) {
            $mesg = $ldap->start_tls( %{ $self->start_tls_options } );
        }
        else {
            $mesg = $ldap->start_tls;
        }
        if ( $mesg->is_error ) {
            Catalyst::Exception->throw( "TLS Error: " . $mesg->error );
        }
    }
    return $ldap;
}

sub ldap_bind {
    my ( $self, $ldap, $binddn, $bindpw, $forauth ) = @_;
    $forauth ||= 0;
    $ldap    ||= $self->ldap_connect;
    if ( !defined($ldap) ) {
        Catalyst::Exception->throw("LDAP Server undefined!");
    }
    $binddn ||= $self->binddn;
    $bindpw ||= $self->bindpw;
    if ( $binddn eq "anonymous" ) {
        $self->_ldap_bind_anon($ldap);
    }
    else {
        if ($bindpw) {
            my $mesg = $ldap->bind( $binddn, 'password' => $bindpw );
            if ( $mesg->is_error ) {

                # If we're not checking this bind for authentication purposes
                # Go ahead an blow up if we fail.
                if ( $forauth ne 'forauth' ) {
                    Catalyst::Exception->throw(
                        "Error on Initial Bind: " . $mesg->error );
                }
                else {
                    return undef;
                }
            }
        }
        else {
            $self->_ldap_bind_anon($ldap, $binddn);
        }
    }
    return $ldap;
}

sub _ldap_bind_anon {
    my ($self, $ldap, $dn) = @_;
    my $mesg = $ldap->bind($dn);
    if ( $mesg->is_error ) {
        Catalyst::Exception->throw( "Error on Bind: " . $mesg->error );
    }
}

sub lookup_user {
    my ( $self, $id ) = @_;

    # No sneaking in wildcards!
    if ( $id =~ /\*/ ) {
        Catalyst::Exception->throw("ID $id contains wildcards!");
    }
    # Trim trailing space or we confuse ourselves
    $id =~ s/\s+$//;
    my $ldap = $self->ldap_bind;
    my @searchopts;
    if ( defined( $self->user_basedn ) ) {
        push( @searchopts, 'base' => $self->user_basedn );
    }
    else {
        Catalyst::Exception->throw(
            "You must set user_basedn before looking up users!");
    }
    my $filter = $self->_replace_filter( $self->user_filter, $id );
    push( @searchopts, 'filter' => $filter );
    push( @searchopts, 'scope'  => $self->user_scope );
    if ( defined( $self->user_search_options ) ) {
        push( @searchopts, %{ $self->user_search_options } );
    }
    my $usersearch = $ldap->search(@searchopts);

    return undef if ( $usersearch->is_error );

    my $userentry;
    my $user_field     = $self->user_field;
    my $results_filter = $self->user_results_filter;
    my $entry;
    if ( defined($results_filter) ) {
        $entry = &$results_filter($usersearch);
    }
    else {
        $entry = $usersearch->pop_entry;
    }
    if ( $usersearch->pop_entry ) {
        Catalyst::Exception->throw(
                  "More than one entry matches user search.\n"
                . "Consider defining a user_results_filter sub." );
    }

    # a little extra sanity check with the 'eq' since LDAP already
    # says it matches.
    # NOTE that Net::LDAP returns exactly what you asked for, but
    # because LDAP is often case insensitive, FoO can match foo
    # and so we normalize with lc().
    if ( defined($entry) ) {
        unless ( lc( $entry->get_value($user_field) ) eq lc($id) ) {
            Catalyst::Exception->throw(
                "LDAP claims '$user_field' equals '$id' but results entry does not match."
            );
        }
        $userentry = $entry;
    }

    $ldap->unbind;
    $ldap->disconnect;
    unless ($userentry) {
        return undef;
    }
    my $attrhash;
    foreach my $attr ( $userentry->attributes ) {
        my @attrvalues = $userentry->get_value($attr);
        if ( scalar(@attrvalues) == 1 ) {
            $attrhash->{ lc($attr) } = $attrvalues[0];
        }
        else {
            $attrhash->{ lc($attr) } = \@attrvalues;
        }
    }
    
    eval { Catalyst::Utils::ensure_class_loaded($self->entry_class) };
    if ( !$@ ) {
        bless( $userentry, $self->entry_class );
        $userentry->{_use_unicode}++;
    }
    my $rv = {
        'ldap_entry' => $userentry,
        'attributes' => $attrhash,
    };
    return $rv;
}

sub lookup_roles {
    my ( $self, $userobj, $ldap ) = @_;
    if ( $self->use_roles == 0 || $self->use_roles =~ /^false$/i ) {
        return undef;
    }
    $ldap ||= $self->ldap_bind;
    my @searchopts;
    if ( defined( $self->role_basedn ) ) {
        push( @searchopts, 'base' => $self->role_basedn );
    }
    else {
        Catalyst::Exception->throw(
            "You must set up role_basedn before looking up roles!");
    }
    my $filter_value = $userobj->has_attribute( $self->role_value );
    if ( !defined($filter_value) ) {
        Catalyst::Exception->throw( "User object "
                . $userobj->username
                . " has no "
                . $self->role_value
                . " attribute, so I can't look up it's roles!" );
    }
    my $filter = $self->_replace_filter( $self->role_filter, $filter_value );
    push( @searchopts, 'filter' => $filter );
    push( @searchopts, 'scope'  => $self->role_scope );
    push( @searchopts, 'attrs'  => [ $self->role_field ] );
    if ( defined( $self->role_search_options ) ) {
        push( @searchopts, %{ $self->role_search_options } );
    }
    my $rolesearch = $ldap->search(@searchopts);
    my @roles;
RESULT: foreach my $entry ( $rolesearch->entries ) {
        push( @roles, $entry->get_value( $self->role_field ) );
    }
    return @roles;
}

sub _replace_filter {
    my $self    = shift;
    my $filter  = shift;
    my $replace = shift;
    $filter =~ s/\%s/$replace/g;
    return $filter;
}

sub user_supports {
    my $self = shift;

    # this can work as a class method
    Catalyst::Authentication::Store::LDAP::User->supports(@_);
}

sub from_session {
    my ( $self, $c, $id ) = @_;
    $self->get_user($id, $c);
}

1;

__END__