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https://github.com/BookStackApp/BookStack.git
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Made LDAP auth ID attribute configurable
- Allows the field that gets stored as the "External Authentication ID" to be configurable. Defined as LDAP_ID_ATTRIBUTE=uid in .env. - Added test to cover usage. - Also now auto-lowercases when searching for attributes in LDAP response since PHP always provides them as lower case. Closes #592.
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@ -191,6 +191,7 @@ LDAP_PASS=false
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LDAP_USER_FILTER=false
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LDAP_VERSION=false
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LDAP_TLS_INSECURE=false
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LDAP_ID_ATTRIBUTE=uid
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LDAP_EMAIL_ATTRIBUTE=mail
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LDAP_DISPLAY_NAME_ATTRIBUTE=cn
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LDAP_FOLLOW_REFERRALS=true
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@ -1,17 +1,16 @@
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<?php namespace BookStack\Auth\Access;
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use BookStack\Auth\Access;
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use BookStack\Auth\User;
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use BookStack\Auth\UserRepo;
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use BookStack\Exceptions\LdapException;
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use ErrorException;
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use Illuminate\Contracts\Auth\Authenticatable;
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/**
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* Class LdapService
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* Handles any app-specific LDAP tasks.
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* @package BookStack\Services
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*/
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class LdapService extends Access\ExternalAuthService
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class LdapService extends ExternalAuthService
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{
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protected $ldap;
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@ -22,10 +21,8 @@ class LdapService extends Access\ExternalAuthService
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/**
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* LdapService constructor.
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* @param Ldap $ldap
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* @param \BookStack\Auth\UserRepo $userRepo
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*/
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public function __construct(Access\Ldap $ldap, UserRepo $userRepo)
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public function __construct(Ldap $ldap, UserRepo $userRepo)
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{
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$this->ldap = $ldap;
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$this->config = config('services.ldap');
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@ -43,13 +40,10 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* Search for attributes for a specific user on the ldap
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* @param string $userName
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* @param array $attributes
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* @return null|array
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* Search for attributes for a specific user on the ldap.
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* @throws LdapException
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*/
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private function getUserWithAttributes($userName, $attributes)
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private function getUserWithAttributes(string $userName, array $attributes): ?array
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{
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$ldapConnection = $this->getConnection();
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$this->bindSystemUser($ldapConnection);
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@ -71,16 +65,15 @@ class LdapService extends Access\ExternalAuthService
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/**
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* Get the details of a user from LDAP using the given username.
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* User found via configurable user filter.
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* @param $userName
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* @return array|null
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* @throws LdapException
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*/
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public function getUserDetails($userName)
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public function getUserDetails(string $userName): ?array
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{
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$idAttr = $this->config['id_attribute'];
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$emailAttr = $this->config['email_attribute'];
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$displayNameAttr = $this->config['display_name_attribute'];
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$user = $this->getUserWithAttributes($userName, ['cn', 'uid', 'dn', $emailAttr, $displayNameAttr]);
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$user = $this->getUserWithAttributes($userName, ['cn', 'dn', $idAttr, $emailAttr, $displayNameAttr]);
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if ($user === null) {
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return null;
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@ -88,7 +81,7 @@ class LdapService extends Access\ExternalAuthService
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$userCn = $this->getUserResponseProperty($user, 'cn', null);
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return [
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'uid' => $this->getUserResponseProperty($user, 'uid', $user['dn']),
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'uid' => $this->getUserResponseProperty($user, $idAttr, $user['dn']),
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'name' => $this->getUserResponseProperty($user, $displayNameAttr, $userCn),
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'dn' => $user['dn'],
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'email' => $this->getUserResponseProperty($user, $emailAttr, null),
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@ -98,13 +91,10 @@ class LdapService extends Access\ExternalAuthService
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/**
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* Get a property from an LDAP user response fetch.
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* Handles properties potentially being part of an array.
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* @param array $userDetails
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* @param string $propertyKey
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* @param $defaultValue
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* @return mixed
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*/
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protected function getUserResponseProperty(array $userDetails, string $propertyKey, $defaultValue)
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{
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$propertyKey = strtolower($propertyKey);
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if (isset($userDetails[$propertyKey])) {
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return (is_array($userDetails[$propertyKey]) ? $userDetails[$propertyKey][0] : $userDetails[$propertyKey]);
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}
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@ -113,13 +103,10 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* @param Authenticatable $user
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* @param string $username
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* @param string $password
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* @return bool
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* Check if the given credentials are valid for the given user.
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* @throws LdapException
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*/
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public function validateUserCredentials(Authenticatable $user, $username, $password)
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public function validateUserCredentials(Authenticatable $user, string $username, string $password): bool
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{
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$ldapUser = $this->getUserDetails($username);
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if ($ldapUser === null) {
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@ -133,7 +120,7 @@ class LdapService extends Access\ExternalAuthService
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$ldapConnection = $this->getConnection();
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try {
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$ldapBind = $this->ldap->bind($ldapConnection, $ldapUser['dn'], $password);
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} catch (\ErrorException $e) {
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} catch (ErrorException $e) {
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$ldapBind = false;
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}
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@ -203,12 +190,10 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* Parse a LDAP server string and return the host and port for
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* a connection. Is flexible to formats such as 'ldap.example.com:8069' or 'ldaps://ldap.example.com'
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* @param $serverString
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* @return array
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* Parse a LDAP server string and return the host and port for a connection.
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* Is flexible to formats such as 'ldap.example.com:8069' or 'ldaps://ldap.example.com'.
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*/
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protected function parseServerString($serverString)
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protected function parseServerString(string $serverString): array
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{
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$serverNameParts = explode(':', $serverString);
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@ -225,11 +210,8 @@ class LdapService extends Access\ExternalAuthService
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/**
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* Build a filter string by injecting common variables.
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* @param string $filterString
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* @param array $attrs
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* @return string
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*/
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protected function buildFilter($filterString, array $attrs)
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protected function buildFilter(string $filterString, array $attrs): string
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{
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$newAttrs = [];
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foreach ($attrs as $key => $attrText) {
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@ -240,12 +222,10 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* Get the groups a user is a part of on ldap
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* @param string $userName
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* @return array
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* Get the groups a user is a part of on ldap.
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* @throws LdapException
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*/
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public function getUserGroups($userName)
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public function getUserGroups(string $userName): array
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{
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$groupsAttr = $this->config['group_attribute'];
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$user = $this->getUserWithAttributes($userName, [$groupsAttr]);
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@ -260,40 +240,36 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* Get the parent groups of an array of groups
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* @param array $groupsArray
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* @param array $checked
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* @return array
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* Get the parent groups of an array of groups.
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* @throws LdapException
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*/
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private function getGroupsRecursive($groupsArray, $checked)
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private function getGroupsRecursive(array $groupsArray, array $checked): array
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{
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$groups_to_add = [];
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$groupsToAdd = [];
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foreach ($groupsArray as $groupName) {
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if (in_array($groupName, $checked)) {
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continue;
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}
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$groupsToAdd = $this->getGroupGroups($groupName);
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$groups_to_add = array_merge($groups_to_add, $groupsToAdd);
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$parentGroups = $this->getGroupGroups($groupName);
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$groupsToAdd = array_merge($groupsToAdd, $parentGroups);
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$checked[] = $groupName;
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}
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$groupsArray = array_unique(array_merge($groupsArray, $groups_to_add), SORT_REGULAR);
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if (!empty($groups_to_add)) {
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return $this->getGroupsRecursive($groupsArray, $checked);
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} else {
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$groupsArray = array_unique(array_merge($groupsArray, $groupsToAdd), SORT_REGULAR);
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if (empty($groupsToAdd)) {
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return $groupsArray;
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}
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return $this->getGroupsRecursive($groupsArray, $checked);
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}
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/**
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* Get the parent groups of a single group
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* @param string $groupName
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* @return array
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* Get the parent groups of a single group.
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* @throws LdapException
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*/
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private function getGroupGroups($groupName)
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private function getGroupGroups(string $groupName): array
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{
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$ldapConnection = $this->getConnection();
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$this->bindSystemUser($ldapConnection);
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@ -310,17 +286,14 @@ class LdapService extends Access\ExternalAuthService
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return [];
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}
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$groupGroups = $this->groupFilter($groups[0]);
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return $groupGroups;
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return $this->groupFilter($groups[0]);
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}
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/**
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* Filter out LDAP CN and DN language in a ldap search return
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* Gets the base CN (common name) of the string
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* @param array $userGroupSearchResponse
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* @return array
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* Filter out LDAP CN and DN language in a ldap search return.
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* Gets the base CN (common name) of the string.
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*/
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protected function groupFilter(array $userGroupSearchResponse)
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protected function groupFilter(array $userGroupSearchResponse): array
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{
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$groupsAttr = strtolower($this->config['group_attribute']);
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$ldapGroups = [];
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@ -341,9 +314,7 @@ class LdapService extends Access\ExternalAuthService
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}
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/**
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* Sync the LDAP groups to the user roles for the current user
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* @param \BookStack\Auth\User $user
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* @param string $username
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* Sync the LDAP groups to the user roles for the current user.
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* @throws LdapException
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*/
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public function syncGroups(User $user, string $username)
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@ -123,6 +123,7 @@ return [
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'base_dn' => env('LDAP_BASE_DN', false),
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'user_filter' => env('LDAP_USER_FILTER', '(&(uid=${user}))'),
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'version' => env('LDAP_VERSION', false),
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'id_attribute' => env('LDAP_ID_ATTRIBUTE', 'uid'),
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'email_attribute' => env('LDAP_EMAIL_ATTRIBUTE', 'mail'),
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'display_name_attribute' => env('LDAP_DISPLAY_NAME_ATTRIBUTE', 'cn'),
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'follow_referrals' => env('LDAP_FOLLOW_REFERRALS', false),
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@ -24,6 +24,7 @@ class LdapTest extends BrowserKitTest
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'services.ldap.base_dn' => 'dc=ldap,dc=local',
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'services.ldap.email_attribute' => 'mail',
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'services.ldap.display_name_attribute' => 'cn',
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'services.ldap.id_attribute' => 'uid',
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'services.ldap.user_to_groups' => false,
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'auth.providers.users.driver' => 'ldap',
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]);
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@ -102,6 +103,32 @@ class LdapTest extends BrowserKitTest
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->seeInDatabase('users', ['email' => $this->mockUser->email, 'email_confirmed' => false, 'external_auth_id' => $ldapDn]);
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}
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public function test_a_custom_uid_attribute_can_be_specified_and_is_used_properly()
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{
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config()->set(['services.ldap.id_attribute' => 'my_custom_id']);
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$this->mockLdap->shouldReceive('connect')->once()->andReturn($this->resourceId);
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$this->mockLdap->shouldReceive('setVersion')->once();
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$ldapDn = 'cn=test-user,dc=test' . config('services.ldap.base_dn');
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$this->mockLdap->shouldReceive('setOption')->times(2);
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$this->mockLdap->shouldReceive('searchAndGetEntries')->times(2)
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->with($this->resourceId, config('services.ldap.base_dn'), \Mockery::type('string'), \Mockery::type('array'))
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->andReturn(['count' => 1, 0 => [
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'cn' => [$this->mockUser->name],
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'dn' => $ldapDn,
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'my_custom_id' => ['cooluser456'],
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'mail' => [$this->mockUser->email]
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]]);
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$this->mockLdap->shouldReceive('bind')->times(3)->andReturn(true);
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$this->mockEscapes(2);
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$this->mockUserLogin()
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->seePageIs('/')
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->see($this->mockUser->name)
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->seeInDatabase('users', ['email' => $this->mockUser->email, 'email_confirmed' => false, 'external_auth_id' => 'cooluser456']);
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}
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public function test_initial_incorrect_details()
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{
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$this->mockLdap->shouldReceive('connect')->once()->andReturn($this->resourceId);
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@ -365,7 +392,7 @@ class LdapTest extends BrowserKitTest
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'uid' => [$this->mockUser->name],
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'cn' => [$this->mockUser->name],
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'dn' => ['dc=test' . config('services.ldap.base_dn')],
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'displayName' => 'displayNameAttribute'
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'displayname' => 'displayNameAttribute'
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]]);
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$this->mockLdap->shouldReceive('bind')->times(6)->andReturn(true);
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$this->mockEscapes(4);
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