forked from alixandru/q2a-open-login
/
qa-open-overrides.php
164 lines (124 loc) · 5.47 KB
/
qa-open-overrides.php
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<?php
/*
Question2Answer (c) Gideon Greenspan
Open Login Plugin (c) Alex Lixandru
http://www.question2answer.org/
File: qa-plugin/open-login/qa-open-overrides.php
Version: 3.0.0
Description: Overrides the core login functionality
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
More about this license: http://www.question2answer.org/license.php
*/
/**
* Extends the logout functionality by performing some extra clean up for
* the external login modules.
*
* Currently only the login modules using OAuth (like Facebook and Github)
* need additional logout processing (defined in their do_logout methods).
* The OpenID-based login modules will simply use the default functionality.
*
* Only logout functionality is affected by this function. Login mechanism
* is handled by #qa_log_in_external_user function.
*/
function qa_set_logged_in_user($userid, $handle='', $remember=false, $source=null)
{
// if a logout was requested, do extra stuff
if (!isset($userid)) {
// get all modules which have a custom logout logic
$loginmodules=qa_load_modules_with('login', 'do_logout');
// do the work
foreach ($loginmodules as $module) {
$module->do_logout();
}
}
// then just perform the default tasks
qa_set_logged_in_user_base($userid, $handle, $remember, $source);
}
/**
* Overrides the default mechanism of logging in from external sources.
*
* Adds a different way of tracking the sessions and performs some
* additional tasks when creating an user account (setting new fields,
* extra checks, etc).
*/
function qa_log_in_external_user($source, $identifier, $fields)
{
require_once QA_INCLUDE_DIR.'qa-db-users.php';
$remember = qa_opt('open_login_remember') ? true : false;
$users=qa_db_user_login_find($source, $identifier);
$countusers=count($users);
if ($countusers>1)
qa_fatal_error('External login mapped to more than one user'); // should never happen
/*
* To allow for more than one account from the same openid/openauth provider to be
* linked to an Q2A user, we need to override the way session source is stored
* Supposing userid 01 is linked to 2 yahoo accounts, the session source will be
* something like 'yahoo-xyz' when logging in with the first yahoo account and
* 'yahoo-xyt' when logging in with the other.
*/
$aggsource = qa_open_login_get_new_source($source, $identifier);
// prepare some data
if(empty($fields['handle'])) {
$ohandle = ucfirst($source);
} else {
$ohandle = preg_replace('/[\\@\\+\\/]/', ' ', $fields['handle']);
}
$oemail = null;
if (strlen(@$fields['email']) && $fields['confirmed']) { // only if email is confirmed
$oemail = $fields['email'];
}
if ($countusers) { // user exists so log them in
//always update email and handle
if($oemail) qa_db_user_login_set__open($source, $identifier, 'oemail', $oemail);
qa_db_user_login_set__open($source, $identifier, 'ohandle', $ohandle);
qa_set_logged_in_user($users[0]['userid'], $users[0]['handle'], $remember, $aggsource);
} else { // create and log in user
require_once QA_INCLUDE_DIR.'qa-app-users-edit.php';
qa_db_user_login_sync(true);
$users=qa_db_user_login_find($source, $identifier); // check again after table is locked
if (count($users)==1) {
//always update email and handle
if($oemail) qa_db_user_login_set__open($source, $identifier, 'oemail', $oemail);
qa_db_user_login_set__open($source, $identifier, 'ohandle', $ohandle);
qa_db_user_login_sync(false);
qa_set_logged_in_user($users[0]['userid'], $users[0]['handle'], $remember, $aggsource);
} else {
$handle=qa_handle_make_valid(@$fields['handle']);
// check if email address already exists
$emailusers = array();
if (strlen(@$fields['email']) && $fields['confirmed']) { // only if email is confirmed
$emailusers=qa_db_user_find_by_email_or_oemail__open($fields['email']);
if (count($emailusers)) {
// unset regular email to prevent duplicates
unset($fields['email']);
}
}
$userid=qa_create_new_user((string)@$fields['email'], null /* no password */, $handle,
isset($fields['level']) ? $fields['level'] : QA_USER_LEVEL_BASIC, @$fields['confirmed']);
qa_db_user_set($userid, 'oemail', $oemail);
qa_db_user_login_add($userid, $source, $identifier);
qa_db_user_login_set__open($source, $identifier, 'oemail', $oemail);
qa_db_user_login_set__open($source, $identifier, 'ohandle', $ohandle);
qa_db_user_login_sync(false);
$profilefields=array('name', 'location', 'website', 'about');
foreach ($profilefields as $fieldname)
if (strlen(@$fields[$fieldname]))
qa_db_user_profile_set($userid, $fieldname, $fields[$fieldname]);
if (strlen(@$fields['avatar']))
qa_set_user_avatar($userid, $fields['avatar']);
qa_set_logged_in_user($userid, $handle, $remember, $aggsource);
return count($emailusers);
}
}
return 0;
}
/*
Omit PHP closing tag to help avoid accidental output
*/