index bba185e0aeb167477fda363619ed6d073c28e0c4..1966462bf8b04b64b64935de471452f11860a6ca 100644 (file)
var $ocMapping= array();
var $groups= array();
var $result_cache =array();
+ var $ignoreACl = FALSE;
+ var $ACLperPath = array();
+ var $ACLperPath_usesFilter = array();
/* get acl's an put them into the userinfo object
attr subtreeACL (userdn:components, userdn:component1#sub1#sub2,component2,...) */
$this->uid= $attrs['uid'][0];
$this->ip= $_SERVER['REMOTE_ADDR'];
+ $this->ignoreACL = ($this->config->get_cfg_value("ignoreAcl") == $this->dn);
+
/* Initialize ACL_CACHE */
- session::set('ACL_CACHE',array());
$this->reset_acl_cache();
}
public function reset_acl_cache()
{
/* Initialize ACL_CACHE */
- session::set('ACL_CACHE',array());
+ session::global_set('ACL_CACHE',array());
}
function loadACL()
$tmp = @acl::explodeAcl($attrs['gosaAclTemplate'][$i]);
foreach($tmp as $new_acl){
+
+ /* Keep non role attributes here! */
+ $new_acl['filter'] = $aclc_value['filter'];
$new_acl['members'] = $aclc_value['members'];
$aclc[$dn][] =$new_acl;
}
$this->ACL[$dn][$idx]= $type;
}
}
+ }
+
+ /* Create an array which represenet all relevant permissions settings
+ per dn.
+
+ The array will look like this:
+
+ . ['ou=base'] ['ou=base'] = array(ACLs);
+ .
+ . ['ou=dep1,ou=base']['ou=dep1,ou=base'] = array(ACLs);
+ . ['ou=base'] = array(ACLs);
+
+
+ For object located in 'ou=dep1,ou=base' we have to both ACLs,
+ for objects in 'ou=base' we only have to apply on ACL.
+ */
+ $without_self_acl = $all_acl = array();
+ foreach($this->ACL as $dn => $acl){
+ $sdn =$dn;
+ $first= TRUE; // Run at least once
+ while(strpos($dn,",") !== FALSE || $first){
+ $first = FALSE;
+ if(isset($this->ACL[$dn])){
+ $all_acl[$sdn][$dn] = $this->ACL[$dn];
+ $without_self_acl[$sdn][$dn] = $this->ACL[$dn];
+ foreach($without_self_acl[$sdn][$dn] as $acl_id => $acl_set){
+
+ /* Remember which ACL set has speicial user filter
+ */
+ if(isset($acl_set['filter']{1})){
+ $this->ACLperPath_usesFilter[$sdn] = TRUE;
+ }
+
+ /* Remove all acl entries which are especially for the current user (self acl)
+ */
+ foreach($acl_set['acl'] as $object => $object_acls){
+ if(strpos($object_acls[0],"s")){
+ unset($without_self_acl[$sdn][$dn][$acl_id]['acl'][$object]);
+ }
+ }
+ }
+ }
+ $dn = preg_replace("/^[^,]*+,/","",$dn);
+ }
+ }
+ $this->ACLperPath =$without_self_acl;
+ /* Append Self entry */
+ $dn = $this->dn;
+ while(strpos($dn,",") && !isset($all_acl[$dn])){
+ $dn = preg_replace("/^[^,]*+,/","",$dn);
}
+ if(isset($all_acl[$dn])){
+ $this->ACLperPath[$this->dn] = $all_acl[$dn];
+ }
+ }
+
+ function get_category_permissions($dn, $category, $any_acl = FALSE)
+ {
+ return(@$this->get_permissions($dn,$category.'/0',""));
}
+
+ /*! \brief Check if the given object (dn) is copyable
+ @param String The object dn
+ @param String The acl category (e.g. users)
+ @param String The acl class (e.g. user)
+ @return Boolean TRUE if the given object is copyable else FALSE
+ */
+ function is_copyable($dn, $object, $class)
+ {
+ return(preg_match("/r/",$this->has_complete_category_acls($dn, $object)));
+ }
- function get_category_permissions($dn, $category)
+
+ /*! \brief Check if the given object (dn) is cutable
+ @param String The object dn
+ @param String The acl category (e.g. users)
+ @param String The acl class (e.g. user)
+ @return Boolean TRUE if the given object is cutable else FALSE
+ */
+ function is_cutable($dn, $object, $class)
{
- /* Get list of objectClasses and get the permissions for it */
- $acl= "";
- if (isset($this->ocMapping[$category])){
- foreach($this->ocMapping[$category] as $oc){
- $acl.= $this->get_permissions($dn, $category."/".$oc);
- }
- }else{
- trigger_error("ACL request for an invalid category (".$category.").");
- }
+ $remove = preg_match("/d/",$this->get_permissions($dn,$object."/".$class));
+ $read = preg_match("/r/",$this->has_complete_category_acls($dn, $object));
+ return($remove && $read);
+ }
- return ($acl);
+
+ /*! \brief Checks if we are allowed to paste an object to the given destination ($dn)
+ @param String The destination dn
+ @param String The acl category (e.g. users)
+ @param String The acl class (e.g. user)
+ @return Boolean TRUE if we are allowed to paste an object.
+ */
+ function is_pasteable($dn, $object)
+ {
+ return(preg_match("/w/",$this->has_complete_category_acls($dn, $object)));
}
+ /*! \brief Checks if we are allowed to restore a snapshot for the given dn.
+ @param String The destination dn
+ @param String The acl category (e.g. users)
+ @return Boolean TRUE if we are allowed to restore a snapshot.
+ */
+ function allow_snapshot_restore($dn, $object)
+ {
+ if(!is_array($object)){
+ $object = array($object);
+ }
+ $r = $w = TRUE;
+ foreach($object as $category){
+ $w &= preg_match("/w/",$this->has_complete_category_acls($dn, $category));
+ $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
+ }
+ return($r && $w );
+ }
+
+
+ /*! \brief Checks if we are allowed to create a snapshot of the given dn.
+ @param String The source dn
+ @param String The acl category (e.g. users)
+ @return Boolean TRUE if we are allowed to restore a snapshot.
+ */
+ function allow_snapshot_create($dn, $object)
+ {
+ if(!is_array($object)){
+ $object = array($object);
+ }
+ $r = TRUE;
+ foreach($object as $category){
+ $r &= preg_match("/r/",$this->has_complete_category_acls($dn, $category));
+ }
+ return($r) ;
+ }
+
+
function get_permissions($dn, $object, $attribute= "", $skip_write= FALSE)
{
+ /* If we are forced to skip ACLs checks for the current user
+ then return all permissions.
+ */
+ if($this->ignore_acl_for_current_user()){
+ if($skip_write){
+ return("rcdm");
+ }
+ return("rwcdm");
+ }
+
/* Push cache answer? */
- $ACL_CACHE = &session::get('ACL_CACHE');
+ $ACL_CACHE = &session::global_get('ACL_CACHE');
if (isset($ACL_CACHE["$dn+$object+$attribute"])){
+ $ret = $ACL_CACHE["$dn+$object+$attribute"];
+ if($skip_write){
+ $ret = str_replace(array('w','c','d','m'), '',$ret);
+ }
+ return($ret);
+ }
- /* Remove write if needed */
- if ($skip_write){
- $ret = preg_replace('/w/', '', $ACL_CACHE["$dn+$object+$attribute"]);
- }else{
+ /* Detect the set of ACLs we have to check for this object
+ */
+ $adn = $dn;
+ while(!isset($this->ACLperPath[$adn]) && strpos($adn,",") !== FALSE){
+ $adn = preg_replace("/^[^,]*+,/","",$adn);
+ }
+ if(isset($this->ACLperPath[$adn])){
+ $ACL = $this->ACLperPath[$adn];
+ }else{
+ $ACL_CACHE["$dn+$object+$attribute"] = "";
+ return("");
+ }
+
+ /* If we do not need to respect any user-filter settings
+ we can skip the per object ACL checks.
+ */
+ $orig_dn= $dn;
+ if(!isset($this->ACLperPath_usesFilter[$adn])){
+ $dn = $adn;
+ if (isset($ACL_CACHE["$dn+$object+$attribute"])){
$ret = $ACL_CACHE["$dn+$object+$attribute"];
- }
- return($ret);
+ if(!isset($ACL_CACHE["$orig_dn+$object+$attribute"])){
+ $ACL_CACHE["$orig_dn+$object+$attribute"] = $ACL_CACHE["$dn+$object+$attribute"];
+ }
+ if($skip_write){
+ $ret = str_replace('w','',$ret);
+ }
+ return($ret);
+ }
}
+
+ /* Get ldap object, for later filter checks
+ */
+ $ldap = $this->config->get_ldap_link();
$acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
foreach ($path as $element){
/* Clean potential ACLs for each level */
- $acl= $this->cleanACL($acl);
+ if(isset($this->config->idepartments[$cpath])){
+ $acl= $this->cleanACL($acl);
+ }
if ($cpath == ""){
$cpath= $element;
} else {
$cpath= $element.','.$cpath;
}
- if (isset($this->ACL[$cpath])){
+
+ if (isset($ACL[$cpath])){
/* Inspect this ACL, place the result into ACL */
- foreach ($this->ACL[$cpath] as $subacl){
+ foreach ($ACL[$cpath] as $subacl){
/* Reset? Just clean the ACL and turn over to the next one... */
if ($subacl['type'] == 'reset'){
continue;
}
+ /* With user filter */
+ if (isset($subacl['filter']) && !empty($subacl['filter'])){
+ $id = $dn."-".$subacl['filter'];
+ if(!isset($ACL_CACHE['FILTER'][$id])){
+ $ACL_CACHE['FILTER'][$id] = $ldap->object_match_filter($dn,$subacl['filter']);
+ }
+ if(!$ACL_CACHE['FILTER'][$id]){
+ continue;
+ }
+ }
+
+ /* Self ACLs?
+ */
+ if($dn != $this->dn && isset($subacl['acl'][$object][0]) && (strpos($subacl['acl'][$object][0],"s") !== FALSE)){
+ continue;
+ }
+
+ /* If attribute is "", we want to know, if we've *any* permissions here...
+ Merge global class ACLs [0] with attributes specific ACLs [attribute].
+ */
+ if ($attribute == "" && isset($subacl['acl'][$object])){
+ foreach($subacl['acl'][$object] as $attr => $dummy){
+ $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
+ }
+ continue;
+ }
+
/* Per attribute ACL? */
if (isset($subacl['acl'][$object][$attribute])){
$acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attribute]);
continue;
}
- /* If attribute is "", we want to know, if we've *any* permissions here... */
- if ($attribute == "" && isset($subacl['acl'][$object])){
- foreach($subacl['acl'][$object] as $attr => $dummy){
- $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$object][$attr]);
+ /* Category ACLs (e.g. $object = "user/0")
+ */
+ if(strstr($object,"/0")){
+ $ocs = preg_replace("/\/0$/","",$object);
+ if(isset($this->ocMapping[$ocs])){
+
+ /* if $attribute is "", then check every single attribute for this object.
+ if it is 0, then just check the object category ACL.
+ */
+ if($attribute == ""){
+ foreach($this->ocMapping[$ocs] as $oc){
+ if (isset($subacl['acl'][$ocs.'/'.$oc])){
+
+ if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
+
+ foreach($subacl['acl'][$ocs.'/'.$oc] as $attr => $dummy){
+ $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][$attr]);
+ }
+ continue;
+ }
+ }
+ }else{
+ if(isset($subacl['acl'][$ocs.'/'.$oc][0])){
+ if($dn != $this->dn && strpos($subacl['acl'][$ocs.'/'.$oc][0],"s") !== FALSE) continue;
+ $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl'][$ocs.'/'.$oc][0]);
+ }
+ }
}
continue;
}
-
}
}
}
+ /* If the requested ACL is for a container object, then alter
+ ACLs by applying cleanACL a last time.
+ */
+ if(isset($this->config->idepartments[$dn])){
+ $acl = $this->cleanACL($acl);
+ }
+
/* Assemble string */
$ret= "";
foreach ($acl as $key => $value){
- if ($value != ""){
+ if ($value !== ""){
$ret.= $key;
}
}
$ACL_CACHE["$dn+$object+$attribute"]= $ret;
+ $ACL_CACHE["$orig_dn+$object+$attribute"]= $ret;
/* Remove write if needed */
if ($skip_write){
- $ret= preg_replace('/w/', '', $ret);
+ $ret = str_replace(array('w','c','d','m'), '',$ret);
}
return ($ret);
}
/* Extract all departments that are accessible (direct or 'on the way' to an
accessible department) */
- function get_module_departments($module)
+ function get_module_departments($module, $skip_self_acls = FALSE )
{
- /* Use cached results if possilbe */
- $ACL_CACHE = session::get('ACL_CACHE');
- if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)])){
- return($ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)]);
+ /* If we are forced to skip ACLs checks for the current user
+ then return all departments as valid.
+ */
+ if($this->ignore_acl_for_current_user()){
+ return(array_keys($this->config->idepartments));
}
- global $plist;
+ /* Use cached results if possilbe */
+ $ACL_CACHE = &session::global_get('ACL_CACHE');
- $objects= array();
- $deps= array();
+ if(!is_array($module)){
+ $module = array($module);
+ }
- /* Extract all relevant objects for this module from plist */
- foreach ($plist->info as $object => $info){
- if (!isset($info['plCategory'])){
+ global $plist;
+ $res = array();
+ foreach($module as $mod){
+ if(isset($ACL_CACHE['MODULE_DEPARTMENTS'][$mod])){
+ $res = array_merge($res,$ACL_CACHE['MODULE_DEPARTMENTS'][$mod]);
continue;
}
- foreach ($info['plCategory'] as $idx => $data){
- if (preg_match('/^[0-9]+$/', $idx)){
- if ($data == $module){
- $objects[$object]= $object;
- }
- } else {
- if ($idx == $module){
- $objects[$object]= $object;
- }
- }
- }
- }
-
- /* For all gosaDepartments */
- foreach ($this->config->departments as $dn){
- $acl= array("r" => "", "w" => "", "c" => "", "d" => "", "m" => "", "a" => "");
- /* Build dn array */
- $path= split(',', $dn);
- $path= array_reverse($path);
+ $deps = array();
- /* Walk along the path to evaluate the acl */
- $cpath= "";
- foreach ($path as $element){
-
- /* Clean potential ACLs for each level */
- $acl= $this->cleanACL($acl);
+ /* Search for per object ACLs */
+ foreach($this->ACL as $dn => $infos){
+ foreach($infos as $info){
+ $found = FALSE;
+ foreach($info['acl'] as $cat => $data){
- if ($cpath == ""){
- $cpath= $element;
- } else {
- $cpath= $element.','.$cpath;
- }
- if (isset($this->ACL[$cpath])){
-
- /* Inspect this ACL, place the result into ACL */
- foreach ($this->ACL[$cpath] as $subacl){
-
- /* Reset? Just clean the ACL and turn over to the next one... */
- if ($subacl['type'] == 'reset'){
- $acl= $this->cleanACL($acl, TRUE);
- continue;
- }
-
- if($subacl['type'] == 'role'){
- echo "role skipped";
- continue;
+ /* Skip self acls? */
+ if($skip_self_acls && isset($data['0']) && (strpos($data['0'], "s") !== FALSE)) continue;
+ if(preg_match("/^".preg_quote($mod, '/')."/",$cat)){
+ $found =TRUE;
+ break;
}
+ }
- /* Per object ACL? */
- foreach ($objects as $object){
- if (isset($subacl['acl']["$module/$object"])){
- foreach($subacl['acl']["$module/$object"] as $attribute => $dcl){
- $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/$object"][$attribute]);
- }
- }
- }
-
- /* Global ACL? */
- if (isset($subacl['acl']["$module/all"][0])){
- $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["$module/all"][0]);
- continue;
+ if($found && !isset($this->config->idepartments[$dn])){
+ while(!isset($this->config->idepartments[$dn]) && strpos($dn, ",")){
+ $dn = preg_replace("/^[^,]+,/","",$dn);
}
-
- /* Global ACL? */
- if (isset($subacl['acl']["all"][0])){
- $acl= $this->mergeACL($acl, $subacl['type'], $subacl['acl']["all"][0]);
- continue;
+ if(isset($this->config->idepartments[$dn])){
+ $deps[$dn] = $dn;
}
}
}
}
- /* Add department, if we have (some) permissions for the required module */
- foreach ($acl as $val){
- if ($val != ""){
- $deps[]= $dn;
- break;
+ /* For all gosaDepartments */
+ foreach ($this->config->departments as $dn){
+ if(isset($deps[$dn])) continue;
+ $acl = "";
+ if(strpos($mod, '/')){
+ $acl.= $this->get_permissions($dn,$mod);
+ }else{
+ $acl.= $this->get_category_permissions($dn,$mod,TRUE);
+ }
+ if(!empty($acl)) {
+ $deps[$dn] = $dn;
}
}
+
+ $ACL_CACHE['MODULE_DEPARTMENTS'][$mod] = $deps;
+ $res = array_merge($res,$deps);
}
- $ACL_CACHE = &session::get('ACL_CACHE');
- $ACL_CACHE['MODULE_DEPARTMENTS'][serialize($module)] = $deps;
- return ($deps);
+ return (array_values($res));
}
function mergeACL($acl, $type, $newACL)
{
+ $at= array("psub" => "p", "sub" => "s", "one" => "1");
+
if (strpos($newACL, 'w') !== FALSE && strpos($newACL, 'r') === FALSE){
$newACL .= "r";
}
+ /* Ignore invalid characters */
+ $newACL= preg_replace('/[^rwcdm]/', '', $newACL);
+
foreach(str_split($newACL) as $char){
- /* Ignore invalid characters */
- if (!preg_match('/[rwcdm]/', $char)){
- continue;
- }
+ /* Skip "self" ACLs without combination of rwcdm, they have no effect.
+ -self flag without read/write/create/...
+ */
+ if(empty($char)) continue;
/* Skip permanent and subtree entries */
if (preg_match('/[sp]/', $acl[$char])){
continue;
}
- switch ($type){
- case 'psub':
- $acl[$char]= 'p';
- break;
-
- case 'sub':
- $acl[$char]= 's';
- break;
-
- case 'one':
- $acl[$char]= 1;
- break;
-
- case 'base':
- if ($acl[$char] != 1){
- $acl[$char]= 0;
- }
- break;
- }
+ if ($type == "base" && $acl[$char] != 1) {
+ $acl[$char]= 0;
+ } else {
+ $acl[$char]= $at[$type];
+ }
}
return ($acl);
function cleanACL($acl, $reset= FALSE)
{
- foreach ($acl as &$value){
+ foreach ($acl as $key => $value){
+
+ /* Continue, if value is empty or permanent */
+ if ($value == "" || $value == "p") {
+ continue;
+ }
/* Reset removes everything but 'p' */
if ($reset && $value != 'p'){
- $value= "";
+ $acl[$key]= "";
continue;
}
/* Decrease tree level */
if (is_int($value)){
if ($value){
- $value--;
+ $acl[$key]--;
} else {
- $value= "";
+ $acl[$key]= "";
}
}
}
/* Skip objectClass '0' (e.g. users/0) get_permissions will ever return '' ?? */
if($oc == "0") continue;
$tmp = $this->get_permissions($dn, $category."/".$oc);
- for($i = 0 ; $i < strlen($types); $i++) {
+ for($i = 0, $l= strlen($types); $i < $l; $i++) {
if(!preg_match("/".$types[$i]."/",$tmp)){
$acl = preg_replace("/".$types[$i]."/","",$acl);
}
}
return($acl);
}
+
+
+ /*! \brief Returns TRUE if the current user is configured in IGNORE_ACL=".." in your gosa.conf
+ @param Return Boolean TRUE if we have to skip ACL checks else FALSE.
+ */
+ function ignore_acl_for_current_user()
+ {
+ return($this->ignoreACL);
+ }
+
}
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