Collaboration diagram for ilLDAPRoleAssignmentRule:

Public Member Functions
	matches (array $a_user_data)
	Check if a rule matches. More...

	setRoleId (int $a_role_id)
	set role id More...

	getRoleId ()
	get role id More...

	getRuleId ()
	get id More...

	setServerId (int $a_id)
	set server id More...

	getServerId ()
	get server id More...

	setType (int $a_type)
	set type More...

	getType ()
	getType More...

	setDN (string $a_dn)
	set dn More...

	getDN ()
	get dn More...

	setMemberAttribute (string $a_attribute)

	getMemberAttribute ()
	get attribute More...

	setMemberIsDN (bool $a_status)
	set member attribute is dn More...

	isMemberAttributeDN ()
	is member attribute dn More...

	setAttributeName (string $a_name)
	set attribute name More...

	getAttributeName ()
	get attribute name More...

	setAttributeValue (string $a_value)
	set attribute value More...

	getAttributeValue ()
	get atrtibute value More...

	enableAddOnUpdate (bool $a_status)

	isAddOnUpdateEnabled ()

	enableRemoveOnUpdate (bool $a_status)

	isRemoveOnUpdateEnabled ()

	setPluginId (int $a_id)

	getPluginId ()

	isPluginActive ()

	conditionToString ()

	create ()

	update ()

	validate ()

	delete ()

Static Public Member Functions
static	_getInstanceByRuleId (int $a_rule_id)

static	hasRulesForUpdate ()
	Check if there any rule for updates. More...

static	_getRules ($a_server_id)
	Get all rules. More...

Data Fields
const	TYPE_GROUP = 1

const	TYPE_ATTRIBUTE = 2

const	TYPE_PLUGIN = 3

Protected Member Functions
	wildcardCompare (string $a_str1, string $a_str2)

Private Member Functions
	__construct (int $a_rule_id=0)

	isGroupMember (array $a_user_data)
	Check if user is member of specific group. More...

	read ()

Private Attributes
ilLogger	$logger

ilDBInterface	$db

ilErrorHandling	$ilErr

ilLanguage	$lng

int	$rule_id

int	$server_id = 0

bool	$add_on_update = false

bool	$remove_on_update = false

int	$plugin_id = 0

string	$attribute_value = ''

string	$attribute_name = ''

bool	$member_is_dn = false

string	$member_attribute = ''

string	$dn = ''

int	$type = 0

int	$role_id = 0

Static Private Attributes
static array	$instances = []

Detailed Description

Author: Stefan Meyer meyer.nosp@m.@lei.nosp@m.fos.c.nosp@m.om

Definition at line 25 of file class.ilLDAPRoleAssignmentRule.php.

Constructor & Destructor Documentation

◆ __construct()

ilLDAPRoleAssignmentRule::__construct ( int $a_rule_id = 0 )

private

Definition at line 52 of file class.ilLDAPRoleAssignmentRule.php.

References $DIC, ILIAS\Repository\lng(), ILIAS\Repository\logger(), and read().

     {
         global $DIC;
         $this->db = $DIC->database();
         $this->logger = $DIC->logger()->auth();
         $this->ilErr = $DIC['ilErr'];
         $this->lng = $DIC->language();
 
         $this->rule_id = $a_rule_id;
         $this->read();
     }

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Member Function Documentation

◆ _getInstanceByRuleId()

static ilLDAPRoleAssignmentRule::_getInstanceByRuleId ( int $a_rule_id )

static

Definition at line 64 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by ilLDAPSettingsGUI\confirmDeleteRules(), ilLDAPSettingsGUI\deleteRules(), ilLDAPSettingsGUI\editRoleAssignment(), ilLDAPRoleAssignmentRules\getAssignmentsForCreation(), ilLDAPRoleAssignmentRules\getAssignmentsForUpdate(), ilLDAPSettingsGUI\loadRoleAssignmentRule(), and ilLDAPSettingsGUI\roleAssignments().

                                                                : ilLDAPRoleAssignmentRule
     {
         return self::$instances[$a_rule_id] ?? (self::$instances[$a_rule_id] = new ilLDAPRoleAssignmentRule($a_rule_id));
     }

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◆ _getRules()

static ilLDAPRoleAssignmentRule::_getRules ( $a_server_id )

static

Get all rules.

Returns: ilLDAPRoleAssignmentRule[]

Definition at line 196 of file class.ilLDAPRoleAssignmentRule.php.

References $DIC, $ilDB, $res, and ilDBConstants\FETCHMODE_OBJECT.

Referenced by ilLDAPServer\delete(), ilLDAPSettingsGUI\getRoleAssignmentTable(), and ilLDAPSettingsGUI\roleAssignments().

                                                   : array
     {
         global $DIC;
         $ilDB = $DIC->database();
 
         $rules = [];
 
         $query = "SELECT rule_id FROM ldap_role_assignments " .
                 "WHERE server_id = " . $ilDB->quote($a_server_id, 'integer');
         $res = $ilDB->query($query);
         while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
             $rules[] = self::_getInstanceByRuleId((int) $row->rule_id);
         }
 
         return $rules;
     }

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◆ conditionToString()

ilLDAPRoleAssignmentRule::conditionToString ( )

Definition at line 383 of file class.ilLDAPRoleAssignmentRule.php.

References getAttributeName(), getAttributeValue(), getDN(), getPluginId(), getType(), and ILIAS\Repository\lng().

Referenced by ilLDAPSettingsGUI\confirmDeleteRules().

                                        : string
     {
         switch ($this->getType()) {
             case self::TYPE_PLUGIN:
                 return $this->lng->txt('ldap_plugin_id') . ': ' . $this->getPluginId();
 
             case self::TYPE_GROUP:
                 $dn_arr = explode(',', $this->getDN());
                 return $dn_arr[0];
 
             case self::TYPE_ATTRIBUTE:
                 return $this->getAttributeName() . '=' . $this->getAttributeValue();
 
             default:
                 throw new RuntimeException(sprintf('Unknown type: %s', var_export($this->getType(), true)));
         }
     }

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◆ create()

ilLDAPRoleAssignmentRule::create ( )

Definition at line 401 of file class.ilLDAPRoleAssignmentRule.php.

References getAttributeName(), getAttributeValue(), getDN(), getMemberAttribute(), getPluginId(), getRoleId(), getServerId(), getType(), isAddOnUpdateEnabled(), isMemberAttributeDN(), and isRemoveOnUpdateEnabled().

                             : bool
     {
         $next_id = $this->db->nextId('ldap_role_assignments');
 
         $query = "INSERT INTO ldap_role_assignments (server_id,rule_id,type,dn,attribute,isdn,att_name,att_value,role_id, " .
             "add_on_update, remove_on_update, plugin_id ) " .
             "VALUES( " .
             $this->db->quote($this->getServerId(), 'integer') . ", " .
             $this->db->quote($next_id, 'integer') . ", " .
             $this->db->quote($this->getType(), 'integer') . ", " .
             $this->db->quote($this->getDN(), 'text') . ", " .
             $this->db->quote($this->getMemberAttribute(), 'text') . ", " .
             $this->db->quote($this->isMemberAttributeDN(), 'integer') . ", " .
             $this->db->quote($this->getAttributeName(), 'text') . ", " .
             $this->db->quote($this->getAttributeValue(), 'text') . ", " .
             $this->db->quote($this->getRoleId(), 'integer') . ", " .
             $this->db->quote($this->isAddOnUpdateEnabled(), 'integer') . ', ' .
             $this->db->quote($this->isRemoveOnUpdateEnabled(), 'integer') . ', ' .
             $this->db->quote($this->getPluginId(), 'integer') . ' ' .
             ")";
         $this->db->manipulate($query);
         $this->rule_id = $next_id;
 
         return true;
     }

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◆ delete()

ilLDAPRoleAssignmentRule::delete ( )

Definition at line 484 of file class.ilLDAPRoleAssignmentRule.php.

References getRuleId().

Referenced by ilLDAPSettingsGUI\deleteRules().

                             : bool
     {
         $query = "DELETE FROM ldap_role_assignments " .
             "WHERE rule_id = " . $this->db->quote($this->getRuleId(), 'integer') . " ";
         $this->db->manipulate($query);
 
         return true;
     }

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◆ enableAddOnUpdate()

ilLDAPRoleAssignmentRule::enableAddOnUpdate ( bool $a_status )

Definition at line 348 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                      : void
     {
         $this->add_on_update = $a_status;
     }

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◆ enableRemoveOnUpdate()

ilLDAPRoleAssignmentRule::enableRemoveOnUpdate ( bool $a_status )

Definition at line 358 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                         : void
     {
         $this->remove_on_update = $a_status;
     }

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◆ getAttributeName()

ilLDAPRoleAssignmentRule::getAttributeName ( )

get attribute name

Definition at line 327 of file class.ilLDAPRoleAssignmentRule.php.

References $attribute_name.

Referenced by conditionToString(), create(), matches(), update(), and validate().

                                       : string
     {
         return $this->attribute_name;
     }

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◆ getAttributeValue()

ilLDAPRoleAssignmentRule::getAttributeValue ( )

get atrtibute value

Definition at line 343 of file class.ilLDAPRoleAssignmentRule.php.

References $attribute_value.

Referenced by conditionToString(), create(), matches(), update(), and validate().

                                        : string
     {
         return $this->attribute_value;
     }

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◆ getDN()

ilLDAPRoleAssignmentRule::getDN ( )

get dn

Definition at line 282 of file class.ilLDAPRoleAssignmentRule.php.

References $dn.

Referenced by conditionToString(), create(), isGroupMember(), update(), and validate().

                            : string
     {
         return $this->dn;
     }

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◆ getMemberAttribute()

ilLDAPRoleAssignmentRule::getMemberAttribute ( )

get attribute

Definition at line 295 of file class.ilLDAPRoleAssignmentRule.php.

References $member_attribute.

Referenced by create(), isGroupMember(), update(), and validate().

                                         : string
     {
         return $this->member_attribute;
     }

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◆ getPluginId()

ilLDAPRoleAssignmentRule::getPluginId ( )

Definition at line 373 of file class.ilLDAPRoleAssignmentRule.php.

References $plugin_id.

Referenced by conditionToString(), create(), matches(), update(), and validate().

                                  : int
     {
         return $this->plugin_id;
     }

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◆ getRoleId()

ilLDAPRoleAssignmentRule::getRoleId ( )

get role id

Definition at line 226 of file class.ilLDAPRoleAssignmentRule.php.

References $role_id.

Referenced by create(), matches(), update(), and validate().

                                : int
     {
         return $this->role_id;
     }

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◆ getRuleId()

ilLDAPRoleAssignmentRule::getRuleId ( )

get id

Definition at line 234 of file class.ilLDAPRoleAssignmentRule.php.

References $rule_id.

Referenced by delete(), read(), and update().

                                : int
     {
         return $this->rule_id;
     }

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◆ getServerId()

ilLDAPRoleAssignmentRule::getServerId ( )

get server id

Definition at line 250 of file class.ilLDAPRoleAssignmentRule.php.

References $server_id.

Referenced by create(), isGroupMember(), and update().

                                  : int
     {
         return $this->server_id;
     }

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◆ getType()

ilLDAPRoleAssignmentRule::getType ( )

getType

Definition at line 266 of file class.ilLDAPRoleAssignmentRule.php.

References $type.

Referenced by conditionToString(), create(), isPluginActive(), matches(), update(), and validate().

                              : int
     {
         return $this->type;
     }

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◆ hasRulesForUpdate()

static ilLDAPRoleAssignmentRule::hasRulesForUpdate ( )

static

Check if there any rule for updates.

Definition at line 72 of file class.ilLDAPRoleAssignmentRule.php.

References $DIC, $ilDB, $res, and ilDBConstants\FETCHMODE_OBJECT.

Referenced by ilLDAPUserSynchronisation\isUpdateRequired().

                                               : bool
     {
         global $DIC;
 
         $ilDB = $DIC['ilDB'];
 
         $query = 'SELECT COUNT(*) num FROM ldap_role_assignments ' .
             'WHERE add_on_update = 1 ' .
             'OR remove_on_update = 1 ';
         $res = $ilDB->query($query);
         $row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT);
 
         return $row->num > 0;
     }

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◆ isAddOnUpdateEnabled()

ilLDAPRoleAssignmentRule::isAddOnUpdateEnabled ( )

Definition at line 353 of file class.ilLDAPRoleAssignmentRule.php.

References $add_on_update.

Referenced by create(), and update().

                                           : bool
     {
         return $this->add_on_update;
     }

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◆ isGroupMember()

ilLDAPRoleAssignmentRule::isGroupMember ( array $a_user_data )

private

Check if user is member of specific group.

Parameters

array $a_user_data user_data

Definition at line 155 of file class.ilLDAPRoleAssignmentRule.php.

References Vendor\Package\$e, $res, $server, getDN(), ilLDAPServer\getInstanceByServerId(), getMemberAttribute(), getServerId(), isMemberAttributeDN(), ilLDAPServer\LDAP_SCOPE_BASE, and ILIAS\Repository\logger().

Referenced by matches().

                                                       : bool
     {
         $server = ilLDAPServer::getInstanceByServerId($this->getServerId());
 
         if ($this->isMemberAttributeDN()) {
             if ($server->enabledEscapeDN()) {
                 $user_cmp = ldap_escape($a_user_data['dn'], "", LDAP_ESCAPE_FILTER);
             } else {
                 $user_cmp = $a_user_data['dn'];
             }
         } else {
             $user_cmp = $a_user_data['ilExternalAccount'];
         }
 
         try {
             $query = new ilLDAPQuery($server);
             $query->bind();
             $res = $query->query(
                 $this->getDN(),
                 sprintf(
                     '(%s=%s)',
                     $this->getMemberAttribute(),
                     $user_cmp
                 ),
                 ilLDAPServer::LDAP_SCOPE_BASE,
                 array('dn')
             );
             return (bool) $res->numRows();
         } catch (ilLDAPQueryException $e) {
             $this->logger->warning(': Caught Exception: ' . $e->getMessage());
             return false;
         }
     }

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◆ isMemberAttributeDN()

ilLDAPRoleAssignmentRule::isMemberAttributeDN ( )

is member attribute dn

Definition at line 311 of file class.ilLDAPRoleAssignmentRule.php.

References $member_is_dn.

Referenced by create(), isGroupMember(), and update().

                                          : bool
     {
         return $this->member_is_dn;
     }

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◆ isPluginActive()

ilLDAPRoleAssignmentRule::isPluginActive ( )

Definition at line 378 of file class.ilLDAPRoleAssignmentRule.php.

References getType().

                                     : bool
     {
         return $this->getType() === self::TYPE_PLUGIN;
     }

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◆ isRemoveOnUpdateEnabled()

ilLDAPRoleAssignmentRule::isRemoveOnUpdateEnabled ( )

Definition at line 363 of file class.ilLDAPRoleAssignmentRule.php.

References $remove_on_update.

Referenced by create(), and update().

                                              : bool
     {
         return $this->remove_on_update;
     }

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◆ matches()

ilLDAPRoleAssignmentRule::matches ( array $a_user_data )

Check if a rule matches.

Definition at line 90 of file class.ilLDAPRoleAssignmentRule.php.

References ilObject\_lookupTitle(), ilLDAPRoleAssignmentRules\callPlugin(), getAttributeName(), getAttributeValue(), getPluginId(), getRoleId(), getType(), isGroupMember(), ILIAS\Repository\logger(), and wildcardCompare().

                                                : bool
     {
         switch ($this->getType()) {
             case self::TYPE_PLUGIN:
                 return ilLDAPRoleAssignmentRules::callPlugin($this->getPluginId(), $a_user_data);
 
             case self::TYPE_ATTRIBUTE:
 
                 $attn = strtolower($this->getAttributeName());
 
                 if (!isset($a_user_data[$attn])) {
                     return false;
                 }
 
                 if (!is_array($a_user_data[$attn])) {
                     $attribute_val = array(0 => $a_user_data[$attn]);
                 } else {
                     $attribute_val = $a_user_data[$attn];
                 }
 
                 foreach ($attribute_val as $value) {
                     if ($this->wildcardCompare(trim($this->getAttributeValue()), trim($value))) {
                         $this->logger->debug(': Found role mapping: ' . ilObject::_lookupTitle($this->getRoleId()));
                         return true;
                     }
                 }
                 return false;
 
             case self::TYPE_GROUP:
                 return $this->isGroupMember($a_user_data);
         }
 
         return false;
     }

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◆ read()

ilLDAPRoleAssignmentRule::read ( )

private

Definition at line 493 of file class.ilLDAPRoleAssignmentRule.php.

References $res, enableAddOnUpdate(), enableRemoveOnUpdate(), ilDBConstants\FETCHMODE_OBJECT, getRuleId(), setAttributeName(), setAttributeValue(), setDN(), setMemberAttribute(), setMemberIsDN(), setPluginId(), setRoleId(), setServerId(), and setType().

Referenced by __construct().

                            : void
     {
         $query = "SELECT * FROM ldap_role_assignments " .
             "WHERE rule_id = " . $this->db->quote($this->getRuleId(), 'integer') . " ";
 
         $res = $this->db->query($query);
         while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
             $this->setServerId((int) $row->server_id);
             $this->setType((int) $row->type);
             if (!is_null($row->dn)) {
                 $this->setDN($row->dn);
             }
             if (!is_null($row->attribute)) {
                 $this->setMemberAttribute($row->attribute);
             }
             $this->setMemberIsDN((bool) $row->isdn);
             if (!is_null($row->att_name)) {
                 $this->setAttributeName($row->att_name);
             }
             if (!is_null($row->att_value)) {
                 $this->setAttributeValue($row->att_value);
             }
             $this->setRoleId((int) $row->role_id);
             if (!is_null($row->add_on_update)) {
                 $this->enableAddOnUpdate((bool) $row->add_on_update);
             }
             if (!is_null($row->remove_on_update)) {
                 $this->enableRemoveOnUpdate((bool) $row->remove_on_update);
             }
             if (!is_null($row->plugin_id)) {
                 $this->setPluginId((int) $row->plugin_id);
             }
         }
     }

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◆ setAttributeName()

ilLDAPRoleAssignmentRule::setAttributeName ( string $a_name )

set attribute name

Definition at line 319 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                     : void
     {
         $this->attribute_name = $a_name;
     }

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◆ setAttributeValue()

ilLDAPRoleAssignmentRule::setAttributeValue ( string $a_value )

set attribute value

Definition at line 335 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                       : void
     {
         $this->attribute_value = $a_value;
     }

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◆ setDN()

ilLDAPRoleAssignmentRule::setDN ( string $a_dn )

set dn

Definition at line 274 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                        : void
     {
         $this->dn = $a_dn;
     }

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◆ setMemberAttribute()

ilLDAPRoleAssignmentRule::setMemberAttribute ( string $a_attribute )

Definition at line 287 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                            : void
     {
         $this->member_attribute = $a_attribute;
     }

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◆ setMemberIsDN()

ilLDAPRoleAssignmentRule::setMemberIsDN ( bool $a_status )

set member attribute is dn

Definition at line 303 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                                  : void
     {
         $this->member_is_dn = $a_status;
     }

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◆ setPluginId()

ilLDAPRoleAssignmentRule::setPluginId ( int $a_id )

Definition at line 368 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                           : void
     {
         $this->plugin_id = $a_id;
     }

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◆ setRoleId()

ilLDAPRoleAssignmentRule::setRoleId ( int $a_role_id )

set role id

Parameters

int $a_role_id role id of global role

Definition at line 218 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                              : void
     {
         $this->role_id = $a_role_id;
     }

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◆ setServerId()

ilLDAPRoleAssignmentRule::setServerId ( int $a_id )

set server id

Definition at line 242 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                           : void
     {
         $this->server_id = $a_id;
     }

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◆ setType()

ilLDAPRoleAssignmentRule::setType ( int $a_type )

set type

Definition at line 258 of file class.ilLDAPRoleAssignmentRule.php.

Referenced by read().

                                         : void
     {
         $this->type = $a_type;
     }

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◆ update()

ilLDAPRoleAssignmentRule::update ( )

Definition at line 427 of file class.ilLDAPRoleAssignmentRule.php.

References getAttributeName(), getAttributeValue(), getDN(), getMemberAttribute(), getPluginId(), getRoleId(), getRuleId(), getServerId(), getType(), isAddOnUpdateEnabled(), isMemberAttributeDN(), and isRemoveOnUpdateEnabled().

                             : bool
     {
         $query = "UPDATE ldap_role_assignments " .
             "SET server_id = " . $this->db->quote($this->getServerId(), 'integer') . ", " .
             "type = " . $this->db->quote($this->getType(), 'integer') . ", " .
             "dn = " . $this->db->quote($this->getDN(), 'text') . ", " .
             "attribute = " . $this->db->quote($this->getMemberAttribute(), 'text') . ", " .
             "isdn = " . $this->db->quote($this->isMemberAttributeDN(), 'integer') . ", " .
             "att_name = " . $this->db->quote($this->getAttributeName(), 'text') . ", " .
             "att_value = " . $this->db->quote($this->getAttributeValue(), 'text') . ", " .
             "role_id = " . $this->db->quote($this->getRoleId(), 'integer') . ", " .
             "add_on_update = " . $this->db->quote($this->isAddOnUpdateEnabled(), 'integer') . ', ' .
             'remove_on_update = ' . $this->db->quote($this->isRemoveOnUpdateEnabled(), 'integer') . ', ' .
             'plugin_id = ' . $this->db->quote($this->getPluginId(), 'integer') . ' ' .
             "WHERE rule_id = " . $this->db->quote($this->getRuleId(), 'integer') . " ";
         $this->db->manipulate($query);
 
         return true;
     }

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◆ validate()

ilLDAPRoleAssignmentRule::validate ( )

Definition at line 447 of file class.ilLDAPRoleAssignmentRule.php.

References getAttributeName(), getAttributeValue(), getDN(), getMemberAttribute(), getPluginId(), getRoleId(), and getType().

                               : bool
     {
         $this->ilErr->setMessage('');
 
         if (!$this->getRoleId()) {
             $this->ilErr->setMessage('fill_out_all_required_fields');
             return false;
         }
         switch ($this->getType()) {
             case self::TYPE_GROUP:
                 if ($this->getDN() === '' || $this->getMemberAttribute() === '') {
                     $this->ilErr->setMessage('fill_out_all_required_fields');
                     return false;
                 }
                 break;
             case self::TYPE_ATTRIBUTE:
                 if ($this->getAttributeName() === '' || $this->getAttributeValue() === '') {
                     $this->ilErr->setMessage('fill_out_all_required_fields');
                     return false;
                 }
                 break;
 
             case self::TYPE_PLUGIN:
                 if (!$this->getPluginId()) {
                     $this->ilErr->setMessage('ldap_err_missing_plugin_id');
                     return false;
                 }
                 break;
 
             default:
                 $this->ilErr->setMessage('ldap_no_type_given');
                 return false;
         }
 
         return true;
     }

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◆ wildcardCompare()

ilLDAPRoleAssignmentRule::wildcardCompare	(	string	$a_str1,
		string	$a_str2
	)

protected

Definition at line 125 of file class.ilLDAPRoleAssignmentRule.php.

References $message, ILIAS\Repository\logger(), and ilAuthUtils\REGEX_DELIMITERS.

Referenced by matches().

                                                                       : bool
     {
         $pattern = str_replace('*', '.*?', $a_str1);
 
         foreach (ilAuthUtils::REGEX_DELIMITERS as $delimiter) {
             $this->logger->debug('Trying pattern to match attribute value:' . $pattern . ' => ' . $a_str2);
 
             set_error_handler(static function (int $severity, string $message, string $file, int $line): never {
                 throw new ErrorException($message, $severity, $severity, $file, $line);
             });
 
             try {
                 return preg_match($delimiter . "^" . $pattern . '$' . $delimiter . 'i', $a_str2) === 1;
             } catch (Exception $ex) {
                 $this->logger->warning('Error occurred in preg_match Ex.: ' . $ex->getMessage());
             } finally {
                 restore_error_handler();
             }
         }
 
         return false;
     }