Add error messages, fix LDAP error
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			@ -2,6 +2,7 @@
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use BookStack\Auth\Role;
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use BookStack\Auth\User;
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use Illuminate\Database\Eloquent\Builder;
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class ExternalAuthService
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{
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			@ -57,19 +58,19 @@ class ExternalAuthService
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    /**
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     * Sync the groups to the user roles for the current user
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     * @param \BookStack\Auth\User $user
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     * @param array $samlAttributes
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     * @param array $userGroups
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     */
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    public function syncWithGroups(User $user, array $userGroups)
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    {
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        // Get the ids for the roles from the names
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        $samlGroupsAsRoles = $this->matchGroupsToSystemsRoles($userSamlGroups);
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        $groupsAsRoles = $this->matchGroupsToSystemsRoles($userGroups);
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        // Sync groups
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        if ($this->config['remove_from_groups']) {
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            $user->roles()->sync($samlGroupsAsRoles);
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            $user->roles()->sync($groupsAsRoles);
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            $this->userRepo->attachDefaultRole($user);
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        } else {
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            $user->roles()->syncWithoutDetaching($samlGroupsAsRoles);
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            $user->roles()->syncWithoutDetaching($groupsAsRoles);
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        }
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    }
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}
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			@ -5,7 +5,6 @@ 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 Illuminate\Contracts\Auth\Authenticatable;
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use Illuminate\Database\Eloquent\Builder;
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/**
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 * Class LdapService
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			@ -5,8 +5,6 @@ use BookStack\Auth\User;
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use BookStack\Auth\UserRepo;
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use BookStack\Exceptions\SamlException;
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use Illuminate\Contracts\Auth\Authenticatable;
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use Illuminate\Database\Eloquent\Builder;
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use Illuminate\Support\Facades\Log;
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/**
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			@ -117,6 +115,27 @@ class Saml2Service extends Access\ExternalAuthService
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        return $userGroups;
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    }
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    /**
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     *  For an array of strings, return a default for an empty array,
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     *  a string for an array with one element and the full array for
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     *  more than one element.
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     *
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     *  @param array $data
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     *  @param $defaultValue
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     *  @return string
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     */
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    protected function simplifyValue(array $data, $defaultValue) {
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        switch (count($data)) {
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            case 0:
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                $data = $defaultValue;
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                break;
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            case 1:
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                $data = $data[0];
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                break;
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        }
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        return $data;
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    }
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    /**
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     * Get a property from an SAML response.
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     * Handles properties potentially being an array.
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			@ -128,14 +147,7 @@ class Saml2Service extends Access\ExternalAuthService
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    protected function getSamlResponseAttribute(array $samlAttributes, string $propertyKey, $defaultValue)
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    {
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        if (isset($samlAttributes[$propertyKey])) {
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            $data = $samlAttributes[$propertyKey];
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            if (is_array($data)) {
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              if (count($data) == 0) {
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                $data = $defaultValue;
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              } else if (count($data) == 1) {
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                $data = $data[0];
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              }
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            }
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            $data = $this->simplifyValue($samlAttributes[$propertyKey], $defaultValue);
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        } else {
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            $data = $defaultValue;
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        }
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			@ -190,6 +202,7 @@ class Saml2Service extends Access\ExternalAuthService
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     *  they exist, optionally registering them automatically.
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     *  @param string $samlID
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     *  @param array $samlAttributes
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     *  @throws SamlException
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     */
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    public function processLoginCallback($samlID, $samlAttributes)
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    {
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			@ -197,12 +210,14 @@ class Saml2Service extends Access\ExternalAuthService
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        $isLoggedIn = auth()->check();
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        if ($isLoggedIn) {
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            logger()->error("Already logged in");
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            throw new SamlException(trans('errors.saml_already_logged_in'), '/login');
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        } else {
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            $user = $this->getOrRegisterUser($userDetails);
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            if ($user === null) {
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                logger()->error("User does not exist");
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                throw new SamlException(trans('errors.saml_user_not_registered', ['name' => $userDetails['uid']]), '/login');
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            } else {
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                $groups = $this->getUserGroups($samlAttributes);
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                $this->syncWithGroups($user, $groups);
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                auth()->login($user);
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            }
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        }
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			@ -150,12 +150,14 @@ return [
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    ],
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    'saml' => [
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        'name' => env('SAML_NAME', 'SSO'),
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        'enabled' => env('SAML2_ENABLED', false),
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        'auto_register' => env('SAML_AUTO_REGISTER', false),
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        'email_attribute' => env('SAML_EMAIL_ATTRIBUTE', 'email'),
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        'display_name_attribute' => explode('|', env('SAML_DISPLAY_NAME_ATTRIBUTE', 'username')),
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        'user_name_attribute' => env('SAML_USER_NAME_ATTRIBUTE', null),
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        'group_attribute' => env('SAML_GROUP_ATTRIBUTE', 'group'),
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        'remove_from_groups' => env('SAML_REMOVE_FROM_GROUPS',false),
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        'user_to_groups' => env('SAML_USER_TO_GROUPS', false),
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        'id_is_user_name' => env('SAML_ID_IS_USER_NAME', true),
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    ]
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			@ -1,6 +1,6 @@
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<?php namespace BookStack\Exceptions;
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class SamlException extends PrettyException
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class SamlException extends NotifyException
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{
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}
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			@ -15,6 +15,8 @@ return [
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    'ldap_fail_authed' => 'LDAP-Zugriff mit DN und Passwort ist fehlgeschlagen',
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    'ldap_extension_not_installed' => 'LDAP-PHP-Erweiterung ist nicht installiert.',
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    'ldap_cannot_connect' => 'Die Verbindung zum LDAP-Server ist fehlgeschlagen. Beim initialen Verbindungsaufbau trat ein Fehler auf.',
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    'saml_already_logged_in' => 'Sie sind bereits angemeldet',
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    'saml_user_not_registered' => 'Kein Benutzer mit ID :name registriert und die automatische Registrierung ist deaktiviert',
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    'social_no_action_defined' => 'Es ist keine Aktion definiert',
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    'social_login_bad_response' => "Fehler bei der :socialAccount-Anmeldung: \n:error",
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    'social_account_in_use' => 'Dieses :socialAccount-Konto wird bereits verwendet. Bitte melden Sie sich mit dem :socialAccount-Konto an.',
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			@ -9,6 +9,7 @@ return [
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    // Auth
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    'email_already_confirmed' => 'Die E-Mail-Adresse ist bereits bestätigt. Bitte melde dich an.',
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    'email_confirmation_invalid' => 'Der Bestätigungslink ist nicht gültig oder wurde bereits verwendet. Bitte registriere dich erneut.',
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    'saml_already_logged_in' => 'Du bist bereits angemeldet',
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    'social_account_in_use' => 'Dieses :socialAccount-Konto wird bereits verwendet. Bitte melde dich mit dem :socialAccount-Konto an.',
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    'social_account_email_in_use' => 'Die E-Mail-Adresse ":email" ist bereits registriert. Wenn Du bereits registriert bist, kannst Du Dein :socialAccount-Konto in Deinen Profil-Einstellungen verknüpfen.',
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    'social_account_not_used' => 'Dieses :socialAccount-Konto ist bisher keinem Benutzer zugeordnet. Du kannst das in Deinen Profil-Einstellungen tun.',
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			@ -17,6 +17,8 @@ return [
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    'ldap_fail_authed' => 'LDAP access failed using given dn & password details',
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    'ldap_extension_not_installed' => 'LDAP PHP extension not installed',
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    'ldap_cannot_connect' => 'Cannot connect to ldap server, Initial connection failed',
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    'saml_already_logged_in' => 'Already logged in',
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    'saml_user_not_registered' => 'The user :name is not registered and automatic registration is disabled',
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    'social_no_action_defined' => 'No action defined',
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    'social_login_bad_response' => "Error received during :socialAccount login: \n:error",
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    'social_account_in_use' => 'This :socialAccount account is already in use, Try logging in via the :socialAccount option.',
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			@ -51,7 +51,7 @@
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              <div>
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                  <a id="saml-login" class="button outline block svg" href="{{ url("/saml2/login") }}">
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                      {{-- @icon('auth/github') --}}
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                      {{ trans('auth.log_in_with', ['socialDriver' => 'SAML']) }}
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                      {{ trans('auth.log_in_with', ['socialDriver' => config('services.saml.name')]) }}
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                  </a>
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              </div>
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            @endif
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