class LdapService
{
- protected $ldap;
- protected $ldapConnection;
- protected $config;
-
- /**
- * LdapService constructor.
- * @param Ldap $ldap
- */
- public function __construct(Ldap $ldap)
- {
- $this->ldap = $ldap;
- $this->config = config('services.ldap');
- }
-
- /**
- * Get the details of a user from LDAP using the given username.
- * User found via configurable user filter.
- * @param $userName
- * @return array|null
- * @throws LdapException
- */
- public function getUserDetails($userName)
- {
- $ldapConnection = $this->getConnection();
- $this->bindSystemUser($ldapConnection);
-
- // Find user
- $userFilter = $this->buildFilter($this->config['user_filter'], ['user' => $userName]);
- $baseDn = $this->config['base_dn'];
- $emailAttr = $this->config['email_attribute'];
- $followReferrals = $this->config['follow_referrals'] ? 1 : 0;
- $this->ldap->setOption($ldapConnection, LDAP_OPT_REFERRALS, $followReferrals);
- $users = $this->ldap->searchAndGetEntries($ldapConnection, $baseDn, $userFilter, ['cn', 'uid', 'dn', $emailAttr]);
- if ($users['count'] === 0) {
- return null;
- }
-
- $user = $users[0];
- return [
- 'uid' => (isset($user['uid'])) ? $user['uid'][0] : $user['dn'],
- 'name' => $user['cn'][0],
- 'dn' => $user['dn'],
- 'email' => (isset($user[$emailAttr])) ? (is_array($user[$emailAttr]) ? $user[$emailAttr][0] : $user[$emailAttr]) : null
- ];
- }
-
- /**
- * @param Authenticatable $user
- * @param string $username
- * @param string $password
- * @return bool
- * @throws LdapException
- */
- public function validateUserCredentials(Authenticatable $user, $username, $password)
- {
- $ldapUser = $this->getUserDetails($username);
- if ($ldapUser === null) {
- return false;
- }
- if ($ldapUser['uid'] !== $user->external_auth_id) {
- return false;
- }
-
- $ldapConnection = $this->getConnection();
- try {
- $ldapBind = $this->ldap->bind($ldapConnection, $ldapUser['dn'], $password);
- } catch (\ErrorException $e) {
- $ldapBind = false;
- }
-
- return $ldapBind;
- }
-
- /**
- * Bind the system user to the LDAP connection using the given credentials
- * otherwise anonymous access is attempted.
- * @param $connection
- * @throws LdapException
- */
- protected function bindSystemUser($connection)
- {
- $ldapDn = $this->config['dn'];
- $ldapPass = $this->config['pass'];
-
- $isAnonymous = ($ldapDn === false || $ldapPass === false);
- if ($isAnonymous) {
- $ldapBind = $this->ldap->bind($connection);
- } else {
- $ldapBind = $this->ldap->bind($connection, $ldapDn, $ldapPass);
- }
-
- if (!$ldapBind) {
- throw new LdapException(($isAnonymous ? trans('errors.ldap_fail_anonymous') : trans('errors.ldap_fail_authed')));
- }
- }
-
- /**
- * Get the connection to the LDAP server.
- * Creates a new connection if one does not exist.
- * @return resource
- * @throws LdapException
- */
- protected function getConnection()
- {
- if ($this->ldapConnection !== null) {
- return $this->ldapConnection;
- }
-
- // Check LDAP extension in installed
- if (!function_exists('ldap_connect') && config('app.env') !== 'testing') {
- throw new LdapException(trans('errors.ldap_extension_not_installed'));
- }
-
- // Get port from server string and protocol if specified.
- $ldapServer = explode(':', $this->config['server']);
- $hasProtocol = preg_match('/^ldaps{0,1}\:\/\//', $this->config['server']) === 1;
- if (!$hasProtocol) {
- array_unshift($ldapServer, '');
- }
- $hostName = $ldapServer[0] . ($hasProtocol?':':'') . $ldapServer[1];
- $defaultPort = $ldapServer[0] === 'ldaps' ? 636 : 389;
- $ldapConnection = $this->ldap->connect($hostName, count($ldapServer) > 2 ? intval($ldapServer[2]) : $defaultPort);
-
- if ($ldapConnection === false) {
- throw new LdapException(trans('errors.ldap_cannot_connect'));
- }
-
- // Set any required options
- if ($this->config['version']) {
- $this->ldap->setVersion($ldapConnection, $this->config['version']);
- }
-
- $this->ldapConnection = $ldapConnection;
- return $this->ldapConnection;
- }
-
- /**
- * Build a filter string by injecting common variables.
- * @param string $filterString
- * @param array $attrs
- * @return string
- */
- protected function buildFilter($filterString, array $attrs)
- {
- $newAttrs = [];
- foreach ($attrs as $key => $attrText) {
- $newKey = '${' . $key . '}';
- $newAttrs[$newKey] = $attrText;
- }
- return strtr($filterString, $newAttrs);
- }
-}
+ protected $ldap;
+ protected $ldapConnection;
+ protected $config;
+
+ /**
+ * LdapService constructor.
+ * @param Ldap $ldap
+ */
+ public function __construct(Ldap $ldap)
+ {
+ $this->ldap = $ldap;
+ $this->config = config('services.ldap');
+ }
+
+ /**
+ * Search for attributes for a specific user on the ldap
+ * @param string $userName
+ * @param array $attributes
+ * @return null|array
+ * @throws LdapException
+ */
+ private function getUserWithAttributes($userName,$attributes)
+ {
+ $ldapConnection = $this->getConnection();
+ $this->bindSystemUser($ldapConnection);
+
+ // Find user
+ $userFilter = $this->buildFilter($this->config['user_filter'], ['user' => $userName]);
+ $baseDn = $this->config['base_dn'];
+
+ $followReferrals = $this->config['follow_referrals'] ? 1 : 0;
+ $this->ldap->setOption($ldapConnection, LDAP_OPT_REFERRALS, $followReferrals);
+ $users = $this->ldap->searchAndGetEntries($ldapConnection, $baseDn, $userFilter, $attributes);
+ if ($users['count'] === 0) {
+ return null;
+ }
+
+ return $users[0];
+ }
+
+ /**
+ * Get the details of a user from LDAP using the given username.
+ * User found via configurable user filter.
+ * @param $userName
+ * @return array|null
+ * @throws LdapException
+ */
+ public function getUserDetails($userName)
+ {
+ $emailAttr = $this->config['email_attribute'];
+ $user = $this->getUserWithAttributes($userName, ['cn', 'uid', 'dn', $emailAttr]);
+
+ if ($user === null) {
+ return null;
+ }
+
+ return [
+ 'uid' => (isset($user['uid'])) ? $user['uid'][0] : $user['dn'],
+ 'name' => $user['cn'][0],
+ 'dn' => $user['dn'],
+ 'email' => (isset($user[$emailAttr])) ? (is_array($user[$emailAttr]) ? $user[$emailAttr][0] : $user[$emailAttr]) : null
+ ];
+ }
+
+ /**
+ * @param Authenticatable $user
+ * @param string $username
+ * @param string $password
+ * @return bool
+ * @throws LdapException
+ */
+ public function validateUserCredentials(Authenticatable $user, $username, $password)
+ {
+ $ldapUser = $this->getUserDetails($username);
+ if ($ldapUser === null) {
+ return false;
+ }
+ if ($ldapUser['uid'] !== $user->external_auth_id) {
+ return false;
+ }
+
+ $ldapConnection = $this->getConnection();
+ try {
+ $ldapBind = $this->ldap->bind($ldapConnection, $ldapUser['dn'], $password);
+ } catch (\ErrorException $e) {
+ $ldapBind = false;
+ }
+
+ return $ldapBind;
+ }
+
+ /**
+ * Bind the system user to the LDAP connection using the given credentials
+ * otherwise anonymous access is attempted.
+ * @param $connection
+ * @throws LdapException
+ */
+ protected function bindSystemUser($connection)
+ {
+ $ldapDn = $this->config['dn'];
+ $ldapPass = $this->config['pass'];
+
+ $isAnonymous = ($ldapDn === false || $ldapPass === false);
+ if ($isAnonymous) {
+ $ldapBind = $this->ldap->bind($connection);
+ } else {
+ $ldapBind = $this->ldap->bind($connection, $ldapDn, $ldapPass);
+ }
+
+ if (!$ldapBind) {
+ throw new LdapException(($isAnonymous ? trans('errors.ldap_fail_anonymous') : trans('errors.ldap_fail_authed')));
+ }
+ }
+
+ /**
+ * Get the connection to the LDAP server.
+ * Creates a new connection if one does not exist.
+ * @return resource
+ * @throws LdapException
+ */
+ protected function getConnection()
+ {
+ if ($this->ldapConnection !== null) {
+ return $this->ldapConnection;
+ }
+
+ // Check LDAP extension in installed
+ if (!function_exists('ldap_connect') && config('app.env') !== 'testing') {
+ throw new LdapException(trans('errors.ldap_extension_not_installed'));
+ }
+
+ // Get port from server string and protocol if specified.
+ $ldapServer = explode(':', $this->config['server']);
+ $hasProtocol = preg_match('/^ldaps{0,1}\:\/\//', $this->config['server']) === 1;
+ if (!$hasProtocol) {
+ array_unshift($ldapServer, '');
+ }
+ $hostName = $ldapServer[0] . ($hasProtocol?':':'') . $ldapServer[1];
+ $defaultPort = $ldapServer[0] === 'ldaps' ? 636 : 389;
+ $ldapConnection = $this->ldap->connect($hostName, count($ldapServer) > 2 ? intval($ldapServer[2]) : $defaultPort);
+
+ if ($ldapConnection === false) {
+ throw new LdapException(trans('errors.ldap_cannot_connect'));
+ }
+
+ // Set any required options
+ if ($this->config['version']) {
+ $this->ldap->setVersion($ldapConnection, $this->config['version']);
+ }
+
+ $this->ldapConnection = $ldapConnection;
+ return $this->ldapConnection;
+ }
+
+ /**
+ * Build a filter string by injecting common variables.
+ * @param string $filterString
+ * @param array $attrs
+ * @return string
+ */
+ protected function buildFilter($filterString, array $attrs)
+ {
+ $newAttrs = [];
+ foreach ($attrs as $key => $attrText) {
+ $newKey = '${' . $key . '}';
+ $newAttrs[$newKey] = $attrText;
+ }
+ return strtr($filterString, $newAttrs);
+ }
+
+ /**
+ * Get the groups a user is a part of on ldap
+ * @param string $userName
+ * @return array|null
+ */
+ public function getUserGroups($userName)
+ {
+ $groupsAttr = $this->config['group_attribute'];
+ $user = $this->getUserWithAttributes($userName, [$groupsAttr]);
+
+ if ($user === null) {
+ return null;
+ }
+
+ $userGroups = $this->groupFilter($user);
+ $userGroups = $this->getGroupsRecursive($userGroups,[]);
+ return $userGroups;
+ }
+
+ /**
+ * Get the parent groups of an array of groups
+ * @param array $groupsArray
+ * @param array $checked
+ * @return array
+ */
+ private function getGroupsRecursive($groupsArray,$checked) {
+ $groups_to_add = [];
+ foreach ($groupsArray as $groupName) {
+ if (in_array($groupName,$checked)) continue;
+
+ $groupsToAdd = $this->getGroupGroups($groupName);
+ $groups_to_add = array_merge($groups_to_add,$groupsToAdd);
+ $checked[] = $groupName;
+ }
+ $groupsArray = array_unique(array_merge($groupsArray,$groups_to_add), SORT_REGULAR);
+
+ if (!empty($groups_to_add)) {
+ return $this->getGroupsRecursive($groupsArray,$checked);
+ } else {
+ return $groupsArray;
+ }
+ }
+
+ /**
+ * Get the parent groups of a single group
+ * @param string $groupName
+ * @return array
+ */
+ private function getGroupGroups($groupName)
+ {
+ $ldapConnection = $this->getConnection();
+ $this->bindSystemUser($ldapConnection);
+
+ $followReferrals = $this->config['follow_referrals'] ? 1 : 0;
+ $this->ldap->setOption($ldapConnection, LDAP_OPT_REFERRALS, $followReferrals);
+
+ $baseDn = $this->config['base_dn'];
+ $groupsAttr = strtolower($this->config['group_attribute']);
+
+ $groups = $this->ldap->searchAndGetEntries($ldapConnection, $baseDn, 'CN='.$groupName, [$groupsAttr]);
+ if ($groups['count'] === 0) {
+ return [];
+ }
+
+ $groupGroups = $this->groupFilter($groups[0]);
+ return $groupGroups;
+ }
+
+ /**
+ * Filter out LDAP CN and DN language in a ldap search return
+ * Gets the base CN (common name) of the string
+ * @param string $ldapSearchReturn
+ * @return array
+ */
+ protected function groupFilter($ldapSearchReturn)
+ {
+ $groupsAttr = strtolower($this->config['group_attribute']);
+ $ldapGroups = [];
+ $count = 0;
+ if (isset($ldapSearchReturn[$groupsAttr]['count'])) $count = (int) $ldapSearchReturn[$groupsAttr]['count'];
+ for ($i=0;$i<$count;$i++) {
+ $dnComponents = ldap_explode_dn($ldapSearchReturn[$groupsAttr][$i],1);
+ if (!in_array($dnComponents[0],$ldapGroups)) {
+ $ldapGroups[] = $dnComponents[0];
+ }
+ }
+ return $ldapGroups;
+ }
+
+}
\ No newline at end of file
projects / bookstack / blobdiff