<?php
/*
Question2Answer by Gideon Greenspan and contributors
http://www.question2answer.org/
File: qa-include/qa-install.php
Description: User interface for installing, upgrading and fixing the database
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
*/
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
header('Location: ../');
exit;
}
require_once QA_INCLUDE_DIR.'db/install.php';
qa_report_process_stage('init_install');
// Define database failure handler for install process, if not defined already (file could be included more than once)
if (!function_exists('qa_install_db_fail_handler')) {
/**
* Handler function for database failures during the installation process
*/
function qa_install_db_fail_handler($type, $errno=null, $error=null, $query=null)
{
global $pass_failure_from_install;
$pass_failure_type = $type;
$pass_failure_errno = $errno;
$pass_failure_error = $error;
$pass_failure_query = $query;
$pass_failure_from_install = true;
require QA_INCLUDE_DIR.'qa-install.php';
qa_exit('error');
}
}
$success = '';
$errorhtml = '';
$suggest = '';
$buttons = array();
$fields = array();
$fielderrors = array();
$hidden = array();
// Process user handling higher up to avoid 'headers already sent' warning
if (!isset($pass_failure_type) && qa_clicked('super')) {
require_once QA_INCLUDE_DIR.'db/users.php';
require_once QA_INCLUDE_DIR.'app/users-edit.php';
$inemail = qa_post_text('email');
$inpassword = qa_post_text('password');
$inhandle = qa_post_text('handle');
$fielderrors = array_merge(
qa_handle_email_filter($inhandle, $inemail),
qa_password_validate($inpassword)
);
if (empty($fielderrors)) {
require_once QA_INCLUDE_DIR.'app/users.php';
$userid = qa_create_new_user($inemail, $inpassword, $inhandle, QA_USER_LEVEL_SUPER);
qa_set_logged_in_user($userid, $inhandle);
qa_set_option('feedback_email', $inemail);
$success .= "Congratulations - Your Question2Answer site is ready to go!\n\nYou are logged in as the super administrator and can start changing settings.\n\nThank you for installing Question2Answer.";
}
}
// Output start of HTML early, so we can see a nicely-formatted list of database queries when upgrading
?><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
body, input { font: 16px Verdana, Arial, Helvetica, sans-serif; }
body { text-align: center; width: 640px; margin: 64px auto; }
table { margin: 16px auto; }
th, td { padding: 2px; }
th { text-align: right; font-weight: normal; }
td { text-align: left; }
.msg-success { color: #090; }
.msg-error { color: #b00; }
</style>
</head>
<body>
<?php
if (isset($pass_failure_type)) {
// this page was requested due to query failure, via the fail handler
switch ($pass_failure_type) {
case 'connect':
$errorhtml .= 'Could not establish database connection. Please check the username, password and hostname in the config file, and if necessary set up the appropriate MySQL user and privileges.';
break;
case 'select':
$errorhtml .= 'Could not switch to the Question2Answer database. Please check the database name in the config file, and if necessary create the database in MySQL and grant appropriate user privileges.';
break;
case 'query':
global $pass_failure_from_install;
if (@$pass_failure_from_install)
$errorhtml .= "Question2Answer was unable to perform the installation query below. Please check the user in the config file has CREATE and ALTER permissions:\n\n".qa_html($pass_failure_query."\n\nError ".$pass_failure_errno.": ".$pass_failure_error."\n\n");
else
$errorhtml .= "A Question2Answer database query failed when generating this page.\n\nA full description of the failure is available in the web server's error log file.";
break;
}
}
else {
// this page was requested by user GET/POST, so handle any incoming clicks on buttons
qa_db_connect('qa_install_db_fail_handler');
if (qa_clicked('create')) {
qa_db_install_tables();
if (QA_FINAL_EXTERNAL_USERS) {
if (defined('QA_FINAL_WORDPRESS_INTEGRATE_PATH')) {
require_once QA_INCLUDE_DIR.'db/admin.php';
require_once QA_INCLUDE_DIR.'app/format.php';
// create link back to WordPress home page
qa_db_page_move(qa_db_page_create(get_option('blogname'), QA_PAGE_FLAGS_EXTERNAL, get_option('home'), null, null, null), 'O', 1);
$success .= 'Your Question2Answer database has been created and integrated with your WordPress site.';
}
else {
$success .= 'Your Question2Answer database has been created for external user identity management. Please read the online documentation to complete integration.';
}
}
else {
$success .= 'Your Question2Answer database has been created.';
}
}
if (qa_clicked('nonuser')) {
qa_db_install_tables();
$success .= 'The additional Question2Answer database tables have been created.';
}
if (qa_clicked('upgrade')) {
qa_db_upgrade_tables();
$success .= 'Your Question2Answer database has been updated.';
}
if (qa_clicked('repair')) {
qa_db_install_tables();
$success .= 'The Question2Answer database tables have been repaired.';
}
if (qa_clicked('module')) {
$moduletype = qa_post_text('moduletype');
$modulename = qa_post_text('modulename');
$module = qa_load_module($moduletype, $modulename);
$queries = $module->init_queries(qa_db_list_tables());
if (!empty($queries)) {
if (!is_array($queries))
$queries = array($queries);
foreach ($queries as $query)
qa_db_upgrade_query($query);
}
$success .= 'The '.$modulename.' '.$moduletype.' module has completed database initialization.';
}
}
if (qa_db_connection(false) !== null && !@$pass_failure_from_install) {
$check = qa_db_check_tables(); // see where the database is at
switch ($check) {
case 'none':
if (@$pass_failure_errno == 1146) // don't show error if we're in installation process
$errorhtml = '';
$errorhtml .= 'Welcome to Question2Answer. It\'s time to set up your database!';
if (QA_FINAL_EXTERNAL_USERS) {
if (defined('QA_FINAL_WORDPRESS_INTEGRATE_PATH')) {
$errorhtml .= "\n\nWhen you click below, your Question2Answer site will be set up to integrate with the users of your WordPress site <a href=\"".qa_html(get_option('home'))."\" target=\"_blank\">".qa_html(get_option('blogname'))."</a>. Please consult the online documentation for more information.";
}
else {
$errorhtml .= "\n\nWhen you click below, your Question2Answer site will be set up to integrate with your existing user database and management. Users will be referenced with database column type ".qa_html(qa_get_mysql_user_column_type()).". Please consult the online documentation for more information.";
}
$buttons = array('create' => 'Create the Database');
}
else {
$errorhtml .= "\n\nWhen you click below, your Question2Answer database will be set up to manage user identities and logins internally.\n\nIf you want to offer a single sign-on for an existing user base or website, please consult the online documentation before proceeding.";
$buttons = array('create' => 'Create the Database including User Management');
}
break;
case 'old-version':
// don't show error if we need to upgrade
if (!@$pass_failure_from_install)
$errorhtml = '';
// don't show error before this
$errorhtml .= 'Your Question2Answer database needs to be upgraded for this version of the software.';
$buttons = array('upgrade' => 'Upgrade the Database');
break;
case 'non-users-missing':
$errorhtml = 'This Question2Answer site is sharing its users with another Q2A site, but it needs some additional database tables for its own content. Please click below to create them.';
$buttons = array('nonuser' => 'Create the Tables');
break;
case 'table-missing':
$errorhtml .= 'One or more tables are missing from your Question2Answer database.';
$buttons = array('repair' => 'Repair the Database');
break;
case 'column-missing':
$errorhtml .= 'One or more Question2Answer database tables are missing a column.';
$buttons = array('repair' => 'Repair the Database');
break;
default:
require_once QA_INCLUDE_DIR.'db/admin.php';
if (!QA_FINAL_EXTERNAL_USERS && qa_db_count_users() == 0) {
$errorhtml .= "There are currently no users in the Question2Answer database.\n\nPlease enter your details below to create the super administrator:";
$fields = array(
'handle' => array('label' => 'Username:', 'type' => 'text'),
'password' => array('label' => 'Password:', 'type' => 'password'),
'email' => array('label' => 'Email address:', 'type' => 'text'),
);
$buttons = array('super' => 'Create the Super Administrator');
}
else {
$tables = qa_db_list_tables();
$moduletypes = qa_list_module_types();
foreach ($moduletypes as $moduletype) {
$modules = qa_load_modules_with($moduletype, 'init_queries');
foreach ($modules as $modulename => $module) {
$queries = $module->init_queries($tables);
if (!empty($queries)) {
// also allows single query to be returned
$errorhtml = strtr(qa_lang_html('admin/module_x_database_init'), array(
'^1' => qa_html($modulename),
'^2' => qa_html($moduletype),
'^3' => '',
'^4' => '',
));
$buttons = array('module' => 'Initialize the Database');
$hidden['moduletype'] = $moduletype;
$hidden['modulename'] = $modulename;
break;
}
}
}
}
break;
}
}
if (empty($errorhtml)) {
if (empty($success))
$success = 'Your Question2Answer database has been checked with no problems.';
$suggest = '<a href="'.qa_path_html('admin', null, null, QA_URL_FORMAT_SAFEST).'">Go to admin center</a>';
}
?>
<form method="post" action="<?php echo qa_path_html('install', null, null, QA_URL_FORMAT_SAFEST)?>">
<?php
if (strlen($success))
echo '<p class="msg-success">'.nl2br(qa_html($success)).'</p>';
if (strlen($errorhtml))
echo '<p class="msg-error">'.nl2br($errorhtml).'</p>';
if (strlen($suggest))
echo '<p>'.$suggest.'</p>';
// Very simple general form display logic (we don't use theme since it depends on tons of DB options)
if (count($fields)) {
echo '<table>';
foreach ($fields as $name => $field) {
echo '<tr>';
echo '<th>'.qa_html($field['label']).'</th>';
echo '<td><input type="'.qa_html($field['type']).'" size="24" name="'.qa_html($name).'" value="'.qa_html(@${'in'.$name}).'"></td>';
if (isset($fielderrors[$name]))
echo '<td class="msg-error"><small>'.qa_html($fielderrors[$name]).'</small></td>';
else
echo '<td></td>';
echo '</tr>';
}
echo '</table>';
}
foreach ($buttons as $name => $value)
echo '<input type="submit" name="'.qa_html($name).'" value="'.qa_html($value).'">';
foreach ($hidden as $name => $value)
echo '<input type="hidden" name="'.qa_html($name).'" value="'.qa_html($value).'">';
qa_db_disconnect();
?>
</form>
</body>
</html>