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special case for controlPagedResultResponse. It would be nice if there was a generic way to pass by reference with call_user_func_array.. 

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>
This commit is contained in:
bline 2017-05-20 01:53:46 -06:00 committed by Arthur Schiwon
parent 2d8ec64ee5
commit 76ab41732a
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GPG Key ID: 7424F1874854DF23
1 changed files with 78 additions and 33 deletions
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111
apps/user_ldap/lib/Access.php
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@ -47,6 +47,8 @@ use OCA\User_LDAP\User\Manager;
use OCA\User_LDAP\User\OfflineUser;
use OCA\User_LDAP\Mapping\AbstractMapping;
use OC\ServerNotAvailableException;
/**
* Class Access
* @package OCA\User_LDAP
@ -167,12 +169,6 @@ class Access extends LDAPUtility implements IUserTools {
\OCP\Util::WARN);
return false;
}
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
//LDAP not available
\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
return false;
}
//Cancel possibly running Paged Results operation, otherwise we run in
//LDAP protocol errors
$this->abandonPagedSearch();
@ -190,7 +186,7 @@ class Access extends LDAPUtility implements IUserTools {
$values = [];
$isRangeRequest = false;
do {
$result = $this->executeRead($cr, $dn, $attrToRead, $filter, $maxResults);
$result = $this->executeRead($dn, $attrToRead, $filter, $maxResults);
if(is_bool($result)) {
// when an exists request was run and it was successful, an empty
// array must be returned
@ -232,7 +228,6 @@ class Access extends LDAPUtility implements IUserTools {
/**
* Runs an read operation against LDAP
*
* @param resource $cr the LDAP connection
* @param string $dn
* @param string $attribute
* @param string $filter
@ -241,10 +236,10 @@ class Access extends LDAPUtility implements IUserTools {
* was performed and the requested DN found, array with the
* returned data on a successful usual operation
*/
public function executeRead($cr, $dn, $attribute, $filter, $maxResults) {
public function executeRead($dn, $attribute, $filter, $maxResults) {
$this->initPagedSearch($filter, array($dn), array($attribute), $maxResults, 0);
$dn = $this->helper->DNasBaseParameter($dn);
$rr = @$this->ldap->read($cr, $dn, $filter, array($attribute));
$rr = @$this->invokeLDAPMethod('read', $dn, $filter, array($attribute));
if (!$this->ldap->isResource($rr)) {
if ($attribute !== '') {
//do not throw this message on userExists check, irritates
@ -253,18 +248,18 @@ class Access extends LDAPUtility implements IUserTools {
//in case an error occurs , e.g. object does not exist
return false;
}
if ($attribute === '' && ($filter === 'objectclass=*' || $this->ldap->countEntries($cr, $rr) === 1)) {
if ($attribute === '' && ($filter === 'objectclass=*' || $this->invokeLDAPMethod('countEntries', $rr) === 1)) {
\OCP\Util::writeLog('user_ldap', 'readAttribute: ' . $dn . ' found', \OCP\Util::DEBUG);
return true;
}
$er = $this->ldap->firstEntry($cr, $rr);
$er = $this->invokeLDAPMethod('firstEntry', $rr);
if (!$this->ldap->isResource($er)) {
//did not match the filter, return false
return false;
}
//LDAP attributes are not case sensitive
$result = \OCP\Util::mb_array_change_key_case(
$this->ldap->getAttributes($cr, $er), MB_CASE_LOWER, 'UTF-8');
$this->invokeLDAPMethod('getAttributes', $er), MB_CASE_LOWER, 'UTF-8');
return $result;
}
@ -337,15 +332,8 @@ class Access extends LDAPUtility implements IUserTools {
if(intval($this->connection->turnOnPasswordChange) !== 1) {
throw new \Exception('LDAP password changes are disabled.');
}
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
//LDAP not available
\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
return false;
}
try {
return $this->ldap->modReplace($cr, $userDN, $password);
return $this->invokeLDAPMethod('modReplace', $userDN, $password);
} catch(ConstraintViolationException $e) {
throw new HintException('Password change rejected.', \OC::$server->getL10N('user_ldap')->t('Password change rejected. Hint: ').$e->getMessage(), $e->getCode());
}
@ -937,6 +925,52 @@ class Access extends LDAPUtility implements IUserTools {
return $this->count('objectclass=*', $this->connection->ldapBase, array('dn'), $limit, $offset);
}
/**
* @return mixed
*/
private function invokeLDAPMethod() {
$arguments = func_get_args();
$command = array_shift($arguments);
if (!method_exists($this->ldap, $command)) {
return null;
}
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
// Seems like we didn't find any resource.
\OCP\Util::writeLog('user_ldap', "Could not $command, because resource is missing.", \OCP\Util::DEBUG);
return false;
}
array_unshift($arguments, $cr);
// php no longer supports call-time pass-by-reference
// make special case for controlPagedResultResponse as the third argument is a reference
$doMethod = function () use ($command, &$arguments) {
if ($command == 'controlPagedResultResponse') {
return $this->ldap->controlPagedResultResponse($arguments[0], $arguments[1], $arguments[2]);
} else {
return call_user_func_array(array($this->ldap, $command), $arguments);
}
};
try {
$ret = $doMethod();
} catch (ServerNotAvailableException $e) {
/* Server connection lost, attempt to reestablish it
* Maybe implement exponential backoff?
* This was enough to get solr indexer working which has large delays between LDAP fetches.
*/
\OCP\Util::writeLog('user_ldap', "Connection lost on $command, attempting to reestablish.", \OCP\Util::DEBUG);
$this->connection = clone $this->connection;
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
// Seems like we didn't find any resource.
\OCP\Util::writeLog('user_ldap', "Could not $command, because resource is missing.", \OCP\Util::DEBUG);
return false;
}
$arguments[0] = $cr;
$ret = $doMethod();
}
return $ret;
}
/**
* retrieved. Results will according to the order in the array.
* @param int $limit optional, maximum results to be counted
@ -962,7 +996,23 @@ class Access extends LDAPUtility implements IUserTools {
$pagedSearchOK = $this->initPagedSearch($filter, $base, $attr, intval($limit), $offset);
$linkResources = array_pad(array(), count($base), $cr);
$sr = $this->ldap->search($linkResources, $base, $filter, $attr);
try {
$sr = $this->ldap->search($linkResources, $base, $filter, $attr);
} catch (ServerNotAvailableException $e) {
/* Server connection lost, attempt to reestablish it
* According to MS docs, LDAP cookies survive reconnects
*/
\OCP\Util::writeLog('user_ldap', "Connection lost on search, attempting to reestablish.", \OCP\Util::DEBUG);
$this->connection = clone $this->connection;
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
// Seems like we didn't find any resource.
\OCP\Util::writeLog('user_ldap', "Could not search, because resource is missing.", \OCP\Util::DEBUG);
return false;
}
$linkResources = array_pad(array(), count($base), $cr);
$sr = $this->ldap->search($linkResources, $base, $filter, $attr);
}
$error = $this->ldap->errno($cr);
if(!is_array($sr) || $error !== 0) {
\OCP\Util::writeLog('user_ldap', 'Attempt for Paging? '.print_r($pagedSearchOK, true), \OCP\Util::ERROR);
@ -990,7 +1040,7 @@ class Access extends LDAPUtility implements IUserTools {
if($pagedSearchOK) {
$cr = $this->connection->getConnectionResource();
foreach($sr as $key => $res) {
if($this->ldap->controlPagedResultResponse($cr, $res, $cookie)) {
if($this->invokeLDAPMethod('controlPagedResultResponse', $res, $cookie)) {
$this->setPagedResultCookie($base[$key], $filter, $limit, $offset, $cookie);
}
}
@ -1079,7 +1129,7 @@ class Access extends LDAPUtility implements IUserTools {
$counter = 0;
foreach($searchResults as $res) {
$count = intval($this->ldap->countEntries($cr, $res));
$count = intval($this->invokeLDAPMethod('countEntries', $res));
$counter += $count;
}
@ -1129,7 +1179,7 @@ class Access extends LDAPUtility implements IUserTools {
}
foreach($sr as $res) {
$findings = array_merge($findings, $this->ldap->getEntries($cr , $res ));
$findings = array_merge($findings, $this->invokeLDAPMethod('getEntries', $res));
}
$continue = $this->processPagedSearchStatus($sr, $filter, $base, $findings['count'],
@ -1691,8 +1741,7 @@ class Access extends LDAPUtility implements IUserTools {
*/
private function abandonPagedSearch() {
if($this->connection->hasPagedResultSupport) {
$cr = $this->connection->getConnectionResource();
$this->ldap->controlPagedResult($cr, 0, false, $this->lastCookie);
$this->invokeLDAPMethod('controlPagedResult', 0, false, $this->lastCookie);
$this->getPagedSearchResultState();
$this->lastCookie = '';
$this->cookies = array();
@ -1818,9 +1867,7 @@ class Access extends LDAPUtility implements IUserTools {
if(!is_null($cookie)) {
//since offset = 0, this is a new search. We abandon other searches that might be ongoing.
$this->abandonPagedSearch();
$pagedSearchOK = $this->ldap->controlPagedResult(
$this->connection->getConnectionResource(), $limit,
false, $cookie);
$pagedSearchOK = $this->invokeLDAPMethod('controlPagedResult', $limit, false, $cookie);
if(!$pagedSearchOK) {
return false;
}
@ -1846,9 +1893,7 @@ class Access extends LDAPUtility implements IUserTools {
// in case someone set it to 0 … use 500, otherwise no results will
// be returned.
$pageSize = intval($this->connection->ldapPagingSize) > 0 ? intval($this->connection->ldapPagingSize) : 500;
$pagedSearchOK = $this->ldap->controlPagedResult(
$this->connection->getConnectionResource(), $pageSize, false, ''
);
$pagedSearchOK = $this->invokeLDAPMethod('controlPagedResult', $pageSize, false, '');
}
return $pagedSearchOK;