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Merge pull request #5466 from jlehtoranta/ldap-connectivity-fixes
LDAP Connectivity Fixes
This commit is contained in:
commit
ff93dd7eb1
@ -528,12 +528,13 @@ class Connection extends LDAPUtility {
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}
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}
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$isOverrideMainServer = ($this->configuration->ldapOverrideMainServer
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|| $this->getFromCache('overrideMainServer'));
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$isBackupHost = (trim($this->configuration->ldapBackupHost) !== "");
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$bindStatus = false;
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$error = -1;
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try {
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if (!$this->configuration->ldapOverrideMainServer
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&& !$this->getFromCache('overrideMainServer')
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) {
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if (!$isOverrideMainServer) {
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$this->doConnect($this->configuration->ldapHost,
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$this->configuration->ldapPort);
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$bindStatus = $this->bind();
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@ -543,26 +544,26 @@ class Connection extends LDAPUtility {
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if($bindStatus === true) {
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return $bindStatus;
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}
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} catch (\OC\ServerNotAvailableException $e) {
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if(trim($this->configuration->ldapBackupHost) === "") {
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} catch (ServerNotAvailableException $e) {
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if(!$isBackupHost) {
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throw $e;
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}
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}
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//if LDAP server is not reachable, try the Backup (Replica!) Server
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if( $error !== 0
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|| $this->configuration->ldapOverrideMainServer
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|| $this->getFromCache('overrideMainServer'))
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{
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if($isBackupHost && ($error !== 0 || $isOverrideMainServer)) {
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$this->doConnect($this->configuration->ldapBackupHost,
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$this->configuration->ldapBackupPort);
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$bindStatus = $this->bind();
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if($bindStatus && $error === -1 && !$this->getFromCache('overrideMainServer')) {
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$error = $this->ldap->isResource($this->ldapConnectionRes) ?
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$this->ldap->errno($this->ldapConnectionRes) : -1;
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if($bindStatus && $error === 0 && !$this->getFromCache('overrideMainServer')) {
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//when bind to backup server succeeded and failed to main server,
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//skip contacting him until next cache refresh
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$this->writeToCache('overrideMainServer', true);
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}
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}
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return $bindStatus;
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}
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return null;
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@ -578,16 +579,23 @@ class Connection extends LDAPUtility {
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if ($host === '') {
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return false;
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}
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$this->ldapConnectionRes = $this->ldap->connect($host, $port);
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if($this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
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if($this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) {
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if($this->configuration->ldapTLS) {
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$this->ldap->startTls($this->ldapConnectionRes);
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}
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}
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} else {
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throw new \OC\ServerNotAvailableException('Could not set required LDAP Protocol version.');
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if(!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
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throw new ServerNotAvailableException('Could not set required LDAP Protocol version.');
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}
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if(!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) {
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throw new ServerNotAvailableException('Could not disable LDAP referrals.');
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}
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if($this->configuration->ldapTLS) {
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if(!$this->ldap->startTls($this->ldapConnectionRes)) {
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throw new ServerNotAvailableException('Start TLS failed, when connecting to LDAP host ' . $host . '.');
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}
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}
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return true;
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}
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@ -595,17 +603,10 @@ class Connection extends LDAPUtility {
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* Binds to LDAP
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*/
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public function bind() {
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static $getConnectionResourceAttempt = false;
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if(!$this->configuration->ldapConfigurationActive) {
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return false;
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}
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if($getConnectionResourceAttempt) {
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$getConnectionResourceAttempt = false;
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return false;
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}
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$getConnectionResourceAttempt = true;
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$cr = $this->getConnectionResource();
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$getConnectionResourceAttempt = false;
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if(!$this->ldap->isResource($cr)) {
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return false;
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}
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@ -613,10 +614,17 @@ class Connection extends LDAPUtility {
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$this->configuration->ldapAgentName,
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$this->configuration->ldapAgentPassword);
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if(!$ldapLogin) {
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$errno = $this->ldap->errno($cr);
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\OCP\Util::writeLog('user_ldap',
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'Bind failed: ' . $this->ldap->errno($cr) . ': ' . $this->ldap->error($cr),
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'Bind failed: ' . $errno . ': ' . $this->ldap->error($cr),
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\OCP\Util::WARN);
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$this->ldapConnectionRes = null;
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// Set to failure mode, if LDAP error code is not LDAP_SUCCESS or LDAP_INVALID_CREDENTIALS
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if($errno !== 0x00 && $errno !== 0x31) {
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$this->ldapConnectionRes = null;
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}
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return false;
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}
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return true;
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@ -111,6 +111,10 @@ class ConnectionTest extends \Test\TestCase {
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->method('connect')
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->will($this->returnValue('ldapResource'));
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$this->ldap->expects($this->any())
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->method('errno')
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->will($this->returnValue(0));
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// Not called often enough? Then, the fallback to the backup server is broken.
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$this->connection->expects($this->exactly(4))
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->method('getFromCache')
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@ -138,4 +142,98 @@ class ConnectionTest extends \Test\TestCase {
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$this->connection->init();
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}
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public function testBindWithInvalidCredentials() {
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// background: Bind with invalid credentials should return false
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// and not throw a ServerNotAvailableException.
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$host = 'ldap://nixda.ldap';
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$config = [
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'ldapConfigurationActive' => true,
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'ldapHost' => $host,
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'ldapPort' => 389,
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'ldapBackupHost' => '',
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'ldapAgentName' => 'user',
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'ldapAgentPassword' => 'password'
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];
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$this->connection->setIgnoreValidation(true);
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$this->connection->setConfiguration($config);
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$this->ldap->expects($this->any())
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->method('isResource')
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->will($this->returnValue(true));
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$this->ldap->expects($this->any())
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->method('setOption')
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->will($this->returnValue(true));
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$this->ldap->expects($this->any())
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->method('connect')
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->will($this->returnValue('ldapResource'));
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$this->ldap->expects($this->exactly(2))
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->method('bind')
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->will($this->returnValue(false));
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// LDAP_INVALID_CREDENTIALS
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$this->ldap->expects($this->any())
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->method('errno')
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->will($this->returnValue(0x31));
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try {
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$this->assertFalse($this->connection->bind(), 'Connection::bind() should not return true with invalid credentials.');
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} catch (\OC\ServerNotAvailableException $e) {
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$this->fail('Failed asserting that exception of type "OC\ServerNotAvailableException" is not thrown.');
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}
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}
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public function testStartTlsNegotiationFailure() {
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// background: If Start TLS negotiation fails,
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// a ServerNotAvailableException should be thrown.
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$host = 'ldap://nixda.ldap';
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$port = 389;
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$config = [
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'ldapConfigurationActive' => true,
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'ldapHost' => $host,
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'ldapPort' => $port,
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'ldapTLS' => true,
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'ldapBackupHost' => '',
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'ldapAgentName' => 'user',
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'ldapAgentPassword' => 'password'
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];
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$this->connection->setIgnoreValidation(true);
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$this->connection->setConfiguration($config);
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$this->ldap->expects($this->any())
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->method('isResource')
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->will($this->returnValue(true));
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$this->ldap->expects($this->any())
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->method('connect')
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->will($this->returnValue('ldapResource'));
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$this->ldap->expects($this->any())
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->method('setOption')
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->will($this->returnValue(true));
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$this->ldap->expects($this->any())
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->method('bind')
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->will($this->returnValue(true));
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$this->ldap->expects($this->any())
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->method('errno')
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->will($this->returnValue(0));
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$this->ldap->expects($this->any())
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->method('startTls')
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->will($this->returnValue(false));
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$this->expectException(\OC\ServerNotAvailableException::class);
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$this->expectExceptionMessage('Start TLS failed, when connecting to LDAP host ' . $host . '.');
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$this->connection->init();
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}
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}
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