Merge branch 'master' of git://github.com/brennanmurphy/BookStack into brennanmurphy-master

.env.example

@@ -67,6 +67,15 @@ LDAP_DN=false
 LDAP_PASS=false
 LDAP_USER_FILTER=false
 LDAP_VERSION=false
+#do you want to sync LDAP groups to BookStack roles for a user
+LDAP_USER_TO_GROUPS=false
+#what is the LDAP attribute for group memberships
+LDAP_GROUP_ATTRIBUTE="memberOf"
+#what LDAP group should the user be a part of to be an admin on BookStack
+LDAP_ADMIN_GROUP="Domain Admins"
+#would you like to remove users from roles on bookstack if they do not match on LDAP
+#if false, the ldap groups-roles sync will only add users to roles
+LDAP_REMOVE_FROM_GROUPS=false
 
 # Mail settings
 MAIL_DRIVER=smtp

app/Http/Controllers/Auth/LoginController.php

@@ -5,6 +5,7 @@ namespace BookStack\Http\Controllers\Auth;
 use BookStack\Exceptions\AuthException;
 use BookStack\Http\Controllers\Controller;
 use BookStack\Repos\UserRepo;
+use BookStack\Repos\LdapRepo;
 use BookStack\Services\SocialAuthService;
 use Illuminate\Contracts\Auth\Authenticatable;
 use Illuminate\Foundation\Auth\AuthenticatesUsers;
@@ -96,6 +97,13 @@ class LoginController extends Controller
             auth()->login($user);
         }
 
+        // ldap groups refresh
+        if (config('services.ldap.user_to_groups') !== false && $request->filled('username')) {
+            $ldapRepo = new LdapRepo($this->userRepo);
+            $ldapRepo->syncGroups($user, $request->input('username'));
+        }
+
+
         $path = session()->pull('url.intended', '/');
         $path = baseUrl($path, true);
         return redirect($path);

app/Repos/LdapRepo.php

@@ -0,0 +1,84 @@
+<?php namespace BookStack\Repos;
+
+use BookStack\Services\Ldap;
+use BookStack\Services\LdapService;
+use BookStack\Role;
+use BookStack\Repos\UserRepo;
+
+class LdapRepo
+{
+
+    protected $ldap = null;
+    protected $ldapService = null;
+
+    protected $config;
+
+    /**
+     * LdapRepo constructor.
+     * @param \BookStack\Repos\UserRepo $userRepo
+     */
+    public function __construct(UserRepo $userRepo)
+    {
+        $this->config = config('services.ldap');
+
+        if (config('auth.method') !== 'ldap') {
+            return false;
+        }
+
+        $this->ldapService = new LdapService(new Ldap);
+        $this->userRepo = $userRepo;
+    }
+
+    /**
+     * If there is no ldap connection, all methods calls to this library will return null
+     */
+    public function __call($method, $arguments)
+    {
+        if ($this->ldap === null) {
+            return null;
+        }
+
+        return call_user_func_array(array($this,$method), $arguments);
+    }
+
+    /**
+     * Sync the LDAP groups to the user roles for the current user
+     * @param \BookStack\User $user
+     * @param string $userName
+     * @throws \BookStack\Exceptions\NotFoundException
+     */
+    public function syncGroups($user, $userName)
+    {
+        $userLdapGroups = $this->ldapService->getUserGroups($userName);
+        $userLdapGroups = $this->groupNameFilter($userLdapGroups);
+        // get the ids for the roles from the names
+        $ldapGroupsAsRoles = Role::whereIn('name', $userLdapGroups)->pluck('id');
+        // sync groups
+        if ($this->config['remove_from_groups']) {
+            $user->roles()->sync($ldapGroupsAsRoles);
+            $this->userRepo->attachDefaultRole($user);
+        } else {
+            $user->roles()->syncWithoutDetaching($ldapGroupsAsRoles);
+        }
+
+        // make the user an admin?
+        if (in_array($this->config['admin'], $userLdapGroups)) {
+            $this->userRepo->attachSystemRole($user, 'admin');
+        }
+    }
+
+    /**
+     * Filter to convert the groups from ldap to the format of the roles name on BookStack
+     * Spaces replaced with -, all lowercase letters
+     * @param array $groups
+     * @return array
+     */
+    private function groupNameFilter($groups)
+    {
+        $return = [];
+        foreach ($groups as $groupName) {
+            $return[] = str_replace(' ', '-', strtolower($groupName));
+        }
+        return $return;
+    }
+}

app/Services/LdapService.php

@@ -25,6 +25,32 @@ class LdapService
         $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 $users[0];
+    }
+
     /**
      * Get the details of a user from LDAP using the given username.
      * User found via configurable user filter.
@@ -34,21 +60,13 @@ class LdapService
      */
     public function getUserDetails($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) {
+        $user = $this->getUserWithAttributes($userName, ['cn', 'uid', 'dn', $emailAttr]);
+
+        if ($user === null) {
             return null;
         }
 
-        $user = $users[0];
         return [
             'uid'   => (isset($user['uid'])) ? $user['uid'][0] : $user['dn'],
             'name'  => $user['cn'][0],
@@ -162,4 +180,98 @@ class LdapService
         }
         return strtr($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;
+    }
 }

config/services.php

@@ -118,6 +118,10 @@ return [
         'version' => env('LDAP_VERSION', false),
         'email_attribute' => env('LDAP_EMAIL_ATTRIBUTE', 'mail'),
         'follow_referrals' => env('LDAP_FOLLOW_REFERRALS', false),
-    ]
+		'user_to_groups' => env('LDAP_USER_TO_GROUPS',false),
+		'group_attribute' => env('LDAP_GROUP_ATTRIBUTE', 'memberOf'),
+		'admin' => env('LDAP_ADMIN_GROUP','Domain Admins'),
+		'remove_from_groups' => env('LDAP_REMOVE_FROM_GROUPS',false),
+	]
 
 ];