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phpldapadmin/lib/server_functions.php

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RELEASE 0.9.7
2009-06-30 09:29:51 +00:00
<?php
/* $Header: /cvsroot/phpldapadmin/phpldapadmin/server_functions.php,v 1.27 2005/09/17 19:57:27 wurley Exp $ */
/**
* Classes and functions for LDAP server configuration and capability
*
* @author The phpLDAPadmin development team
* @package phpLDAPadmin
*/
/**
* @package phpLDAPadmin
*/
class LDAPServer {
/** Server ID as defined in config.php */
var $server_id;
/** Server Name as defined in config.php */
var $name;
/** Server Hostname as defined in config.php */
var $host;
/** Server Port as defined in config.php */
var $port;
/** Server Authentication method as defined in config.php */
var $auth_type;
/** Server Authentication Login DN as defined in config.php */
var $login_dn;
/** Server Authentication Password as defined in config.php */
var $login_pass;
/** Array of our connections to this LDAP server */
var $connections = array();
/** Server Base Dn */
var $_baseDN;
/** Default constructor.
* @param int $server_id the server_id of the LDAP server as defined in config.php
*/
function LDAPServer($server_id,$ignore=true) {
debug_log(sprintf('%s::init(): Entered with (%s,%s)',get_class($this),$server_id,$ignore),2);
# Other Internal Values
$this->_schemaDN = null;
$this->server_id = $server_id;
}
/**
* Checks the specified server id for sanity. Ensures that the server is indeed in the configured
* list and active. This is used by many many scripts to ensure that valid server ID values
* are passed in POST and GET.
*
* @param int $server_id the server_id of the LDAP server as defined in config.php
* @return bool
*/
function isValidServer() {
debug_log(sprintf('%s::isValidServer(): Entered with ()',get_class($this)),2);
if( trim($this->host) == '' )
return false;
else
return true;
}
/**
* Check if there is sufficent information to Authenticate to the LDAP server.
*
* Given a server, returns whether or not we have enough information
* to authenticate against the server. For example, if the user specifies
* auth_type of 'cookie' in the config for that server, it checks the $_COOKIE array to
* see if the cookie username and password is set for the server. If the auth_type
* is 'session', the $_SESSION array is checked.
*
* There are three cases for this function depending on the auth_type configured for
* the specified server. If the auth_type is session or cookie, then get_logged_in_dn() is
* called to verify that the user has logged in. If the auth_type is config, then the
* $ldapservers configuration in config.php is checked to ensure that the user has specified
* login information. In any case, if phpLDAPadmin has enough information to login
* to the server, true is returned. Otherwise false is returned.
*
* @return bool
* @see get_logged_in_dn
*/
function haveAuthInfo() {
debug_log(sprintf('%s::haveAuthInfo(): Entered with ()',get_class($this)),2);
debug_log(sprintf('%s::haveAuthInfo(): We are a (%s) auth_type',get_class($this),$this->auth_type),9);
# Set default return
$return = false;
# For session or cookie auth_types, we check the session or cookie to see if a user has logged in.
if (in_array($this->auth_type,array('session','cookie'))) {
/* we don't look at get_logged_in_pass() cause it may be null for anonymous binds
get_logged_in_dn() will never return null if someone is really logged in. */
if (get_logged_in_dn($this))
$return = true;
else
$return = false;
/* whether or not the login_dn or pass is specified, we return
true here. (if they are blank, we do an anonymous bind anyway) */
} elseif ($this->auth_type == 'config' ) {
$return = true;
} else {
global $lang;
pla_error(sprintf($lang['error_auth_type_config'],htmlspecialchars($this->auth_type)) );
}
debug_log(sprintf('%s::haveAuthInfo(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* Connect to the LDAP server.
* @param bool $anonymous Connect as the anonymous user.
* @param bool $reconnect Use a cached connetion, or create a new one.
* @returns resource|false Connection resource to LDAP server, or false if no connection made.
* @todo Need to make changes so that multiple connects can be made.
*/
function connect($process_error=true,$anonymous=false,$reconnect=false,$connect_num=0) {
debug_log(sprintf('%s::connect(): Entered with (%s,%s,%s,%s)',
get_class($this),$process_error,$anonymous,$reconnect,$connect_num),2);
if (isset($this->connections[$connect_num]['resource']) && ! $reconnect) {
debug_log(sprintf('%s::connect(): Returning CACHED connection resource [%s](%s)',
get_class($this),$this->connections[$connect_num]['resource'],$connect_num),3);
return $this->connections[$connect_num]['resource'];
} else {
debug_log(sprintf('%s::connect(): Creating new connection #[%s] for Server ID [%s]',
get_class($this),$connect_num,$this->server_id),3);
global $lang;
if ($anonymous == true) {
debug_log(sprintf('%s::connect(): This IS an anonymous login',get_class($this)),4);
$this->connections[$connect_num]['login_dn'] = null;
$this->connections[$connect_num]['login_pass'] = null;
} // grab the auth info based on the auth_type for this server
elseif ($this->auth_type == 'config') {
debug_log(sprintf('%s::connect(): This IS a "config" login',get_class($this)),9);
if (! $this->login_dn) {
debug_log(sprintf('%s::connect(): No login_dn, so well do anonymous',get_class($this)),9);
$anonymous = true;
} else {
$this->connections[$connect_num]['login_dn'] = $this->login_dn;
$this->connections[$connect_num]['login_pass'] = $this->login_pass;
$this->connections[$connect_num]['login_dn'] = expand_dn_with_base( $this, $this->connections[$connect_num]['login_dn'], false );
debug_log(sprintf('%s::connect(): Config settings, DN [%s], PASS [%s]',get_class($this),
$this->connections[$connect_num]['login_dn'],
$this->connections[$connect_num]['login_pass'] ? md5($this->connections[$connect_num]['login_pass']) : ''),9);
}
} else {
debug_log(sprintf('%s::connect(): This IS some other login',get_class($this)),9);
$this->connections[$connect_num]['login_dn'] = get_logged_in_dn( $this );
$this->connections[$connect_num]['login_pass'] = get_logged_in_pass( $this );
debug_log(sprintf('%s::connect(): Config settings, DN [%s], PASS [%s]',get_class($this),
$this->connections[$connect_num]['login_dn'],
$this->connections[$connect_num]['login_pass'] ? md5($this->connections[$connect_num]['login_pass']) : ''),9);
// Was this an anonyous bind (the cookie stores 0 if so)?
if( 'anonymous' == $this->connections[$connect_num]['login_dn'] ) {
$this->connections[$connect_num]['login_dn'] = null;
$this->connections[$connect_num]['login_pass'] = null;
$anonymous = true;
}
}
if (! $anonymous && ! $this->connections[$connect_num]['login_dn'] && ! $this->connections[$connect_num]['login_pass']) {
debug_log(sprintf('%s::connect(): We dont have enough auth info for server [%s]',get_class($this),$this->server_id),9);
return false;
}
run_hook ( 'pre_connect', array ( 'server_id' => $this->server_id,
'connect_num' => $connect_num,
'anonymous' => $anonymous ) );
if ($this->port)
$resource = @ldap_connect( $this->host, $this->port );
else
$resource = @ldap_connect( $this->host );
debug_log(sprintf('%s::connect(): LDAP Resource [%s], Host [%s], Port [%s]',get_class($this),$resource,$this->host,$this->port),9);
// go with LDAP version 3 if possible (needed for renaming and Novell schema fetching)
@ldap_set_option( $resource, LDAP_OPT_PROTOCOL_VERSION, 3 );
// Disabling this makes it possible to browse the tree for Active Directory, and seems
// to not affect other LDAP servers (tested with OpenLDAP) as phpLDAPadmin explicitly
// specifies deref behavior for each ldap_search operation.
@ldap_set_option( $resource, LDAP_OPT_REFERRALS, 0);
// try to fire up TLS is specified in the config
if( $this->isTLSEnabled() ) {
function_exists( 'ldap_start_tls' ) or pla_error( $lang['php_install_not_supports_tls'] );
@ldap_start_tls( $resource ) or pla_error( $lang['could_not_start_tls'], ldap_error($resource));
}
$bind_result = @ldap_bind( $resource, $this->connections[$connect_num]['login_dn'],
$this->connections[$connect_num]['login_pass'] );
debug_log(sprintf('%s::connect(): Resource [%s], Bind Result [%s]',
get_class($this),$resource,$bind_result),9);
if( ! $bind_result ) {
debug_log(sprintf('%s::connect(): Leaving with FALSE, bind FAILed',get_class($this)),9);
if ($process_error) {
switch( ldap_errno($resource) ) {
case 0x31:
pla_error( $lang['bad_user_name_or_password'] );
break;
case 0x32:
pla_error( $lang['insufficient_access_rights'] );
break;
case -1:
pla_error( sprintf($lang['could_not_connect_to_host_on_port'],$this->host,$this->port) );
break;
default:
pla_error( $lang['could_not_bind'], ldap_err2str( $resource ), $resource );
}
} else {
return false; // ldap_errno( $resource );
}
}
if (is_resource($resource) && ($bind_result)) {
debug_log(sprintf('%s::connect(): Bind successful',get_class($this)),9);
$this->connections[$connect_num]['connected'] = true;
$this->connections[$connect_num]['resource'] = $resource;
/*
} else {
if ($process_error) {
debug_log(sprintf('Server: [%s], Username: [%s], Password: [%s]',
$this->server_id,
$this->connections[$connect_num]['login_dn'],
$this->connections[$connect_num]['login_pass']),9);
if( is_numeric( $resource ) ) {
switch( $resource ) {
case -1: pla_error( $lang['bad_server_id'] ); break;
case -2: pla_error( $lang['not_enough_login_info'] ); break;
default: pla_error( $lang['ferror_error'] ); break;
}
// return true; Do we get here?
}
switch( $resource ) {
case 0x31:
pla_error( $lang['bad_user_name_or_password'] );
break;
case 0x32:
pla_error( $lang['insufficient_access_rights'] );
break;
case 0x5b:
pla_error( $lang['could_not_connect'] );
break;
default:
pla_error( $lang['could_not_bind'], ldap_err2str( $this->connections[$connect_num]['resource'] ), $this->connections[$connect_num]['resource'] );
}
}
debug_log(sprintf('%s::connect(): Leaving with FALSE',get_class($this)),9);
return false;
*/
}
}
debug_log(sprintf('%s::connect(): Leaving with Connect #[%s], Resource [%s]',get_class($this),$connect_num,$this->connections[$connect_num]['resource']),9);
return $this->connections[$connect_num]['resource'];
}
/**
* Gets the root DN of the specified LDAPServer, or null if it
* can't find it (ie, the server won't give it to us, or it isnt
* specified in the configuration file).
*
* Tested with OpenLDAP 2.0, Netscape iPlanet, and Novell eDirectory 8.7 (nldap.com)
* Please report any and all bugs!!
*
* Please note: On FC systems, it seems that php_ldap uses /etc/openldap/ldap.conf in
* the search base if it is blank - so edit that file and comment out the BASE line.
*
* @return array dn|null The root DN of the server on success (string) or null on error.
* @todo Sort the entries, so that they are in the correct DN order.
*/
function getBaseDN() {
debug_log(sprintf('%s::getBaseDN(): Entered with ()',get_class($this)),2);
global $ldapservers;
# Return the cached entry if we've been here before.
if (! is_null($this->_baseDN)) {
debug_log(sprintf('%s::getBaseDN(): Return CACHED BaseDN [%s]',get_class($this),implode('|',$this->_baseDN)),3);
return $this->_baseDN;
}
debug_log(sprintf('%s::getBaseDN(): Checking config for BaseDN',get_class($this)),9);
# If the base is set in the configuration file, then just return that.
if (count($ldapservers->GetValue($this->server_id,'server','base')) > 0) {
$this->_baseDN = $ldapservers->GetValue($this->server_id,'server','base');
debug_log(sprintf('%s::getBaseDN(): Return BaseDN from Config [%s]',get_class($this),implode('|',$this->_baseDN)),4);
return $this->_baseDN;
# We need to figure it out.
} else {
debug_log(sprintf('%s::getBaseDN(): Connect to LDAP to find BaseDN',get_class($this)),9);
if ($this->connect()) {
$r = @ldap_read($this->connect(),'','objectClass=*',array('namingContexts'));
debug_log(sprintf('%s::getBaseDN(): Search Results [%s], Resource [%s], Msg [%s]',
get_class($this),$r,$this->connect(),ldap_error($this->connect())),9);
if (! $r)
return array('');
$r = @ldap_get_entries($this->connect(false),$r);
if (isset($r[0]['namingcontexts'])) {
# If we have a count key, delete it - dont need it.
if (isset($r[0]['namingcontexts']['count']))
unset($r[0]['namingcontexts']['count']);
debug_log(sprintf('%s::getBaseDN(): LDAP Entries:%s',get_class($this),implode('|',$r[0]['namingcontexts'])),5);
$this->_baseDN = $r[0]['namingcontexts'];
return $this->_baseDN;
} else {
return array('');
}
} else {
return array('');
}
}
}
/**
* Returns true if the specified server is configured to be displayed
* in read only mode.
*
* If a user has logged in via anonymous bind, and config.php specifies
* anonymous_bind_implies_read_only as true, then
* this also returns true. Servers can be configured read-only in
* config.php thus:
* <code>
* $server[$i]['read_only'] = true;
* </code>
*
* @return bool
*/
function isReadOnly() {
debug_log(sprintf('%s::isReadOnly(): Entered with ()',get_class($this)),2);
global $config;
# Set default return
$return = false;
if ($this->read_only == true)
$return = true;
elseif (get_logged_in_dn($this) === "anonymous" &&
($config->GetValue('appearance','anonymous_bind_implies_read_only') === true))
$return = true;
debug_log(sprintf('%s::isReadOnly(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* Returns true if the user has configured the specified server to enable mass deletion.
*
* Mass deletion is enabled in config.php this:
* <code>
* $config->custom->appearance['mass_delete'] = true;
* </code>
* Notice that mass deletes are not enabled on a per-server basis, but this
* function checks that the server is not in a read-only state as well.
*
* @return bool
*/
function isMassDeleteEnabled() {
debug_log(sprintf('%s::isMassDeleteEnabled(): Entered with ()',get_class($this)),2);
global $config;
if( $this->connect(false) &&
$this->haveAuthInfo() &&
! $this->isReadOnly() &&
$config->GetValue('appearance','mass_delete') === true)
return true;
else
return false;
}
/**
* Gets whether the admin has configured phpLDAPadmin to show the "Create New" link in the tree viewer.
*
* <code>
* $ldapservers->SetValue($i,'appearance','show_create','true|false');
* </code>
* If NOT set, then default to show the Create New item.
* If IS set, then return the value (it should be true or false).
*
* @default true
* @return bool True if the feature is enabled and false otherwise.
*/
function isShowCreateEnabled() {
debug_log(sprintf('%s::isShowCreateEnabled(): Entered with ()',get_class($this)),2);
return $this->show_create;
}
/**
* Fetch whether the user has configured a certain server as "low bandwidth".
*
* Users may choose to configure a server as "low bandwidth" in config.php thus:
* <code>
* $ldapservers->SetValue($i,'server','low_bandwidth','true|false');
* </code>
*
* @default false
* @return bool
*/
function isLowBandwidth() {
debug_log(sprintf('%s::isLowBandwidth(): Entered with ()',get_class($this)),2);
return $this->low_bandwidth;
}
/**
* Should this LDAP server be shown in the tree?
*
* <code>
* $ldapservers->SetValue($i,'server','visible','true|false');
* </code>
*
* @default true
* @return bool True if the feature is enabled and false otherwise.
*/
function isVisible() {
debug_log(sprintf('%s::isVisible(): Entered with ()',get_class($this)),2);
if( $this->isValidServer() && $this->visible )
$return = true;
else
$return = false;
debug_log(sprintf('%s::isVisible(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* This function will query the ldap server and request the subSchemaSubEntry which should be the Schema DN.
*
* If we cant connect to the LDAP server, we'll return false.
* If we can connect but cant get the entry, then we'll return null.
*
* @return array|false Schema if available, null if its not or false if we cant connect.
*/
function getSchemaDN($dn='') {
debug_log(sprintf('%s::getSchemaDN(): Entered with (%s)',get_class($this),$dn),2);
# If we already got the SchemaDN, then return it.
if ($this->_schemaDN)
return $this->_schemaDN;
if (! $this->connect())
return false;
$search = @ldap_read($this->connect(),$dn,'objectClass=*',array('subschemaSubentry'));
debug_log(sprintf('%s::getSchemaDN(): Search returned (%s)',get_class($this),is_resource($search)),4);
# Fix for broken ldap.conf configuration.
if (! $search && ! $dn) {
debug_log(sprintf('%s::getSchemaDN(): Trying to find the DN for "broken" ldap.conf',get_class($this)),1);
if (isset($this->_baseDN)) {
foreach ($this->_baseDN as $base) {
$search = @ldap_read($this->connect(),$base,'objectClass=*',array('subschemaSubentry'));
debug_log(sprintf('%s::getSchemaDN(): Search returned (%s) for base (%s)',get_class($this),is_resource($search),$base),4);
if ($search)
break;
}
}
}
if (! $search)
return null;
if (! @ldap_count_entries($this->connect(),$search)) {
debug_log(sprintf('%s::getSchemaDN(): Search returned 0 entries. Returning NULL',get_class($this)),4);
return null;
}
$entries = @ldap_get_entries($this->connect(),$search);
debug_log(sprintf('%s::getSchemaDN(): Search returned [%s]',get_class($this),serialize($entries)),4);
if (! $entries || ! is_array($entries))
return null;
$entry = isset($entries[0]) ? $entries[0] : false;
if (! $entry) {
debug_log(sprintf('%s::getSchemaDN(): Entry is false, Returning NULL',get_class($this)),4);
return null;
}
$sub_schema_sub_entry = isset($entry[0]) ? $entry[0] : false;
if (! $sub_schema_sub_entry) {
debug_log(sprintf('%s::getSchemaDN(): Sub Entry is false, Returning NULL',get_class($this)),4);
return null;
}
$this->_schemaDN = isset($entry[$sub_schema_sub_entry][0]) ? $entry[$sub_schema_sub_entry][0] : false;
debug_log(sprintf('%s::getSchemaDN(): Returning (%s)',get_class($this),$this->_schemaDN),1);
return $this->_schemaDN;
}
/**
* Fetches the raw schema array for the subschemaSubentry of the server. Note,
* this function has grown many hairs to accomodate more LDAP servers. It is
* needfully complicated as it now supports many popular LDAP servers that
* don't necessarily expose their schema "the right way".
*
* Please note: On FC systems, it seems that php_ldap uses /etc/openldap/ldap.conf in
* the search base if it is blank - so edit that file and comment out the BASE line.
*
* @param string $schema_to_fetch - A string indicating which type of schema to
* fetch. Five valid values: 'objectclasses', 'attributetypes',
* 'ldapsyntaxes', 'matchingruleuse', or 'matchingrules'.
* Case insensitive.
* @param dn $dn (optional) This paremeter is the DN of the entry whose schema you
* would like to fetch. Entries have the option of specifying
* their own subschemaSubentry that points to the DN of the system
* schema entry which applies to this attribute. If unspecified,
* this will try to retrieve the schema from the RootDSE subschemaSubentry.
* Failing that, we use some commonly known schema DNs. Default
* value is the Root DSE DN (zero-length string)
* @return array an array of strings of this form:
* Array (
* [0] => "( 1.3.6.1.4.1.7165.1.2.2.4 NAME 'gidPool' DESC 'Pool ...
* [1] => "( 1.3.6.1.4.1.7165.2.2.3 NAME 'sambaAccount' DESC 'Sa ...
* etc.
*/
function getRawSchema($schema_to_fetch,$dn='') {
debug_log(sprintf('%s::getRawSchema(): Entered with (%s,%s)',get_class($this),$schema_to_fetch,$dn),2);
global $lang;
$valid_schema_to_fetch = array('objectclasses','attributetypes','ldapsyntaxes','matchingrules','matchingruleuse');
if (! $this->connect())
return false;
# error checking
$schema_to_fetch = strtolower($schema_to_fetch);
# This error message is not localized as only developers should ever see it
if (! in_array($schema_to_fetch,$valid_schema_to_fetch))
pla_error(sprintf('Bad parameter provided to function to %s::getRawSchema(). "%s" is not valid for the schema_to_fetch parameter.',
get_class($this),htmlspecialchars($schema_to_fetch)));
# Try to get the schema DN from the specified entry.
$schema_dn = $this->getSchemaDN($dn);
# Do we need to try again with the Root DSE?
if (! $schema_dn)
$schema_dn = $this->getSchemaDN('');
# Store the eventual schema retrieval in $schema_search
$schema_search = null;
if ($schema_dn) {
debug_log(sprintf('%s::getRawSchema(): Using Schema DN (%s)',get_class($this),$schema_dn),4);
foreach (array('(objectClass=*)','(objectClass=subschema)') as $schema_filter) {
debug_log(sprintf('%s::getRawSchema(): Looking for schema with Filter (%s)',get_class($this),$schema_filter),4);
$schema_search = @ldap_read($this->connect(),$schema_dn,$schema_filter,array($schema_to_fetch),0,0,0,LDAP_DEREF_ALWAYS);
# Were we not able to fetch the schema from the $schema_dn?
$schema_entries = @ldap_get_entries($this->connect(),$schema_search);
debug_log(sprintf('%s::getRawSchema(): Search returned [%s]',get_class($this),serialize($schema_entries)),5);
if ($schema_search && @ldap_count_entries($this->connect(),$schema_search) && isset($schema_entries[0][$schema_to_fetch])) {
debug_log(sprintf('%s::getRawSchema(): Found schema with filter of (%s)',get_class($this),$schema_filter),4);
break;
}
debug_log(sprintf('%s::getRawSchema(): Didnt find schema with filter (%s)',get_class($this),$schema_filter),5);
unset($schema_entries);
$schema_search = null;
}
}
/* Second chance: If the DN or Root DSE didn't give us the subschemaSubentry, ie $schema_search
is still null, use some common subSchemaSubentry DNs as a work-around. */
/** @todo: This is broken now, so we'll need some test cases to fix it up again **/
/*
if (! $schema_search) {
debug_log(sprintf('%s::getRawSchema(): Attempting work-arounds for 'broken' LDAP servers...',get_class($this)),5);
// OpenLDAP and Novell
// @todo Fix expand_dn_with_base - no longer works since getBaseDN is now an arrya.
$ldap['OpenLDAP']['cn=subschema'] = '(objectClass=*)';
// $ldap['W2K3 AD'][expand_dn_with_base($this,'cn=Aggregate,cn=Schema,cn=configuration,',true)] = '(objectClass=*)';
// $ldap['W2K AD'][expand_dn_with_base($this,'cn=Schema,cn=configuration,',true)] = '(objectClass=*)';
// $ldap['W2K AD'][expand_dn_with_base($this,'cn=Schema,ou=Admin,',true)] = '(objectClass=*)';
foreach ($ldap as $ldap_server_name => $ldap_options) {
foreach ($ldap_options as $ldap_dn => $ldap_filter) {
if( $debug ) printf("%s::getRawSchema(): Attempting [%s] (%s) (%s)<BR>",get_class($this),$ldap_server_name,$ldap_dn,$ldap_filter);
$schema_search = @ldap_read($this->connect(), $ldap_dn, $ldap_filter,
array( $schema_to_fetch ), 0, 0, 0, LDAP_DEREF_ALWAYS );
}
if ($schema_search)
break;
}
// Still cant find the schema, try with the RootDSE
// Attempt to pull schema from Root DSE with scope "base", or
// Attempt to pull schema from Root DSE with scope "one" (work-around for Isode M-Vault X.500/LDAP)
}
*/
if (is_null($schema_search)) {
foreach (array('base','one') as $ldap_scope) {
debug_log(sprintf('%s::getRawSchema(): Attempting to find schema with scope (%s), filter (objectClass=*) and a blank base.',
get_class($this),$ldap_scope),5);
switch ($ldap_scope) {
case 'base':
$schema_search = @ldap_read($this->connect(),'','(objectClass=*)',array($schema_to_fetch),0,0,0,LDAP_DEREF_ALWAYS );
break;
case 'one':
$schema_search = @ldap_list($this->connect(),'','(objectClass=*)',array($schema_to_fetch),0,0,0,LDAP_DEREF_ALWAYS );
break;
}
$schema_entries = @ldap_get_entries($this->connect(),$schema_search);
debug_log(sprintf('%s::getRawSchema(): Search returned [%s]',get_class($this),serialize($schema_entries)),5);
if (! isset($schema_entries[0][$schema_to_fetch]))
$schema_search = null;
else
break;
}
}
$schema_error_message = 'Please contant the phpLDAPadmin developers and let them know:<ul><li>Your LDAP server, including version<li>OS its running on<li>Version of PHP<li>A link to some documentation that describes how to obtain the SCHEMA information</ul><br />We\'ll then add support for your LDAP server in an upcoming release.';
$schema_error_message_array = array('objectclasses','attributetypes');
# Shall we just give up?
if (is_null($schema_search)) {
# We need to have objectclasses and attribues, so display an error, asking the user to get us this information.
if (in_array($schema_to_fetch,$schema_error_message_array)) {
pla_error(sprintf('Our attempts to find your SCHEMA for "%s" have FAILED.<br /><br />%s',$schema_to_fetch,$schema_error_message));
} else {
$return = false;
debug_log(sprintf('%s::getRawSchema(): Returning because schema_search is NULL (%s)',get_class($this),$return),1);
return $return;
}
}
# Did we get something unrecognizable?
if (gettype($schema_search) != 'resource') {
if (in_array($schema_to_fetch,$schema_error_message_array)) {
pla_error(sprintf('Our attempts to find your SCHEMA for "%s" has return EXPECTED results.<br /><br /><small>(We expected a "resource" for $schema_search, instead, we got (%s))</small><br /><br />%s<br /><br />Dump of $schema_search:<hr /><pre><small>%s</small></pre>',
$schema_to_fetch,gettype($schema_search),$schema_error_message,serialize($schema_search)));
} else {
$return = false;
debug_log(sprintf('%s::getRawSchema(): Returning because schema_search type is not a resource (%s)',get_class($this),$return),1);
return $return;
}
}
$schema = @ldap_get_entries($this->connect(),$schema_search);
if (! $schema) {
$return = false;
debug_log(sprintf('%s::getRawSchema(): Returning false since ldap_get_entries() returned false.',get_class($this),$return),1);
return $return;
}
if(! isset($schema[0][$schema_to_fetch])) {
if (in_array($schema_to_fetch,$schema_error_message_array)) {
pla_error(sprintf('Our attempts to find your SCHEMA for "%s" has return EXPECTED results.<br /><br /><small>(We expected a "%s" in the $schema array but it wasnt there.)</small><br /><br />%s<br /><br />Dump of $schema_search:<hr /><pre><small>%s</small></pre>',
$schema_to_fetch,gettype($schema_search),$schema_error_message,serialize($schema)));
} else {
$return = false;
debug_log(sprintf('%s::getRawSchema(): Returning because (%s) isnt in the schema array. (%s)',get_class($this),$schema_to_fetch,$return),1);
return $return;
}
}
/* Make a nice array of this form:
Array (
[0] => "( 1.3.6.1.4.1.7165.1.2.2.4 NAME 'gidPool' DESC 'Pool ...
[1] => "( 1.3.6.1.4.1.7165.2.2.3 NAME 'sambaAccount' DESC 'Sa ...
etc. */
$schema = $schema[0][$schema_to_fetch];
unset($schema['count']);
debug_log(sprintf('%s::getRawSchema(): Returning (%s)',get_class($this),serialize($schema)),1);
return $schema;
}
/**
* Fetches whether the login_attr feature is enabled for a specified server.
*
* This is configured in config.php thus:
* <code>
* $ldapservers->SetValue($i,'login','attr','<ldap attr>');
* </code>
*
* By virtue of the fact that the login_attr is not blank and not 'dn', the
* feature is configured to be enabled.
*
* @default uid
* @return bool
*/
function isLoginAttrEnabled() {
debug_log(sprintf('%s::isLoginAttrEnabled(): Entered with ()',get_class($this)),2);
if ((strcasecmp($this->login_attr,'dn') != 0) && trim($this->login_attr))
$return = true;
else
$return = false;
debug_log(sprintf('%s::isLoginAttrEnabled(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* Fetches whether the login_attr feature is enabled for a specified server.
*
* This is configured in config.php thus:
* <code>
* $ldapservers->SetValue($i,'login','attr','string');
* </code>
*
* @return bool
*/
function isLoginStringEnabled() {
debug_log(sprintf('%s::isLoginStringEnabled(): Entered with ()',get_class($this)),2);
debug_log(sprintf('%s::isLoginStringEnabled(): login_attr is [%s]',get_class($this),$this->login_attr),9);
if (! strcasecmp($this->login_attr,'string'))
$return = true;
else
$return = false;
debug_log(sprintf('%s::isLoginStringEnabled(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* Fetches the login_attr string if enabled for a specified server.
*
* This is configured in config.php thus:
* <code>
* $ldapservers->SetValue($i,'login','login_string','uid=<username>,ou=People,dc=example,dc=com');
* </code>
*
* @return string|false
*/
function getLoginString() {
debug_log(sprintf('%s::getLoginString(): Entered with ()',get_class($this)),2);
return $this->login_string;
}
/**
* Fetch whether the user has configured a certain server login to be non anonymous
*
* <code>
* $ldapservers->SetValue($i,'login','anon_bind','true|false');
* </code>
*
* @default true
* @return bool
*/
function isAnonBindAllowed() {
debug_log(sprintf('%s::isAnonBindAllowed(): Entered with ()',get_class($this)),2);
global $ldapservers;
// If only_login_allowed_dns is set, then we cant have anonymous.
if (count($ldapservers->GetValue($this->server_id,'login','allowed_dns')) > 0)
$return = false;
else
$return = $ldapservers->GetValue($this->server_id,'login','anon_bind');
debug_log(sprintf('%s::isAnonBindAllowed(): Returning (%s)',get_class($this),$return),1);
return $return;
}
/**
* Fetches whether TLS has been configured for use with a certain server.
*
* Users may configure phpLDAPadmin to use TLS in config,php thus:
* <code>
* $ldapservers->SetValue($i,'login','tls','true|false');
* </code>
*
* @default false
* @return bool
*/
function isTLSEnabled() {
debug_log(sprintf('%s::isTLSEnabled(): Entered with ()',get_class($this)),2);
return $this->tls;
}
/**
* Returns true if the user has configured the specified server to enable branch (non-leaf) renames.
*
* This is configured in config.php thus:
* <code>
* $ldapservers->SetValue($i,'server','branch_rename','true|false');
* </code>
*
* @default false
* @param int $server_id The ID of the server of interest from config.php.
* @return bool
*/
function isBranchRenameEnabled() {
global $ldapservers;
return $ldapservers->GetValue($this->server_id,'server','branch_rename');
}
}
class LDAPservers {
/* All LDAP servers */
var $_ldapservers;
/* Default settings for a new LDAP server configuration. */
var $default;
function LDAPservers() {
$this->default = new StdClass;
$this->default->server['name'] = array(
'desc'=>'Server name',
'var'=>'name',
'default'=>'LDAP Server');
$this->default->server['host'] = array(
'desc'=>'Host Name',
'var'=>'host',
'default'=>'127.0.0.1');
$this->default->server['port'] = array(
'desc'=>'Port Number',
'var'=>'port',
'default'=>'389');
$this->default->server['base'] = array(
'desc'=>'Base DN',
'default'=>array());
$this->default->server['tls'] = array(
'desc'=>'Connect using TLS',
'var'=>'tls',
'default'=>false);
$this->default->server['auth_type'] = array(
'desc'=>'Authentication Type',
'var'=>'auth_type',
'default'=>'cookie');
$this->default->server['low_bandwidth'] = array(
'desc'=>'Enable LOW Bandwidth optimisations',
'var'=>'low_bandwidth',
'default'=>false);
$this->default->server['read_only'] = array(
'desc'=>'Server is in READ ONLY mode',
'var'=>'read_only',
'default'=>false);
$this->default->server['branch_rename'] = array(
'desc'=>'Permit renaming branches',
'default'=>false);
$this->default->login['dn'] = array(
'desc'=>'User Login DN',
'var'=>'login_dn',
'default'=>'');
$this->default->login['pass'] = array(
'desc'=>'User Login Password',
'var'=>'login_pass',
'default'=>'');
$this->default->login['attr'] = array(
'desc'=>'Attribute to use to find the users DN',
'var'=>'login_attr',
'default'=>'uid');
$this->default->login['class'] = array(
'desc'=>'Strict login to users containing a specific objectClass',
'default'=>null);
$this->default->login['string'] = array(
'desc'=>'Login string if using auth_type=string',
'var'=>'login_string',
'default'=>null);
$this->default->login['anon_bind'] = array(
'desc'=>'Whether to allow anonymous binds',
'default'=>true);
$this->default->login['allowed_dns'] = array(
'desc'=>'Limit logins to users who match any of the following LDAP filters',
'default'=>array());
$this->default->login['timeout'] = array(
'desc'=>'Session timout in seconds',
'var'=>'session_timeout',
'default'=>session_cache_expire()-1);
$this->default->appearance['password_hash'] = array(
'desc'=>'Default HASH to use for passwords',
'var'=>'default_hash',
'default'=>'md5');
$this->default->appearance['show_create'] = array(
'desc'=>'Show CREATE options in the tree',
'var'=>'show_create',
'default'=>true);
$this->default->appearance['visible'] = array(
'desc'=>'Whether this LDAP server is visible in the tree',
'var'=>'visible',
'default'=>true);
$this->default->auto_number['enable'] = array(
'desc'=>'Enable the AUTO UID feature',
'default'=>true);
$this->default->auto_number['mechanism'] = array(
'desc'=>'Mechanism to use to search for automatic numbers',
'default'=>'search');
$this->default->auto_number['search_base'] = array(
'desc'=>'Base DN to use for search mechanisms',
'default'=>null);
$this->default->auto_number['min'] = array(
'desc'=>'Minimum UID number to start with',
'default'=>1000);
$this->default->auto_number['dn'] = array(
'desc'=>'DN to use when evaluating numbers',
'default'=>null);
$this->default->auto_number['pass'] = array(
'desc'=>'Password for DN to use when evaluating numbers',
'default'=>null);
$this->default->unique_attrs['dn'] = array(
'desc'=>'DN to use when evaluating uniqueness',
'default'=>null);
$this->default->unique_attrs['pass'] = array(
'desc'=>'Password for DN to use when evaluating uniqueness',
'default'=>null);
$this->default->custom['pages_prefix'] = array(
'desc'=>'Path to custom pages',
'default'=>null);
}
function SetValue($server_id,$key,$index,$value) {
debug_log(sprintf('%s::SetValue(): Entered with (%s,%s,%s,%s)',
get_class($this),$server_id,$key,$index,(is_array($value) ? 'Array:'.count($value) : $value)),2);
if (! isset($this->default->$key))
# @todo: Display an error, it should be predefined.
pla_error("ERROR: Setting a key [$key] that isnt predefined.");
else
$default = $this->default->$key;
if (! isset($default[$index]))
# @todo: Display an error, it should be predefined.
pla_error("ERROR: Setting a index [$index] that isnt predefined.");
else
$default = $default[$index];
# Test if its should be an array or not.
if (is_array($default['default']) && ! is_array($value))
pla_error("Error in configuration file, {$key}['$index'] SHOULD be an array of values.");
if (! is_array($default['default']) && is_array($value))
pla_error("Error in configuration file, {$key}['$index'] should NOT be an array of values.");
# Some special processing.
if ($key == 'server') {
switch ($index) {
case 'host' :
if (strstr($value,"ldapi://"))
$this->_ldapservers[$server_id][$key]['port'] = false;
break;
}
}
$this->_ldapservers[$server_id][$key][$index] = $value;
}
function GetValue($server_id,$key,$index) {
debug_log(sprintf('%s::GetValue(): Entered with (%s,%s,%s)',get_class($this),$server_id,$key,$index),2);
if (isset($this->_ldapservers[$server_id][$key][$index]))
$return = $this->_ldapservers[$server_id][$key][$index];
else
$return = $this->default->{$key}[$index]['default'];
debug_log(sprintf('%s::GetValue(): Returning (%s)',get_class($this),(is_array($return) ? 'Array:'.serialize($return) : $return)),1);
return $return;
}
function GetServerList() {
return count($this->_ldapservers) ? array_keys($this->_ldapservers) : null;
}
function Instance($server_id) {
$instance = new LDAPserver($server_id);
foreach ($this->default as $key => $details) {
foreach ($details as $index => $value) {
if (isset($value['var']))
$instance->{$value['var']} = $this->GetValue($server_id,$key,$index);
}
}
return $instance;
}
}
?>
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