DBAL: Persistent connections; also explicitly commit and unlock tables when shutting down
<?php
/*
* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
* Copyright (C) 2006-2009 Dan Fuhry
*
* This program is Free Software; you can redistribute 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 details.
*/
define('ENANO_INTERFACE_AJAX', '');
require('includes/common.php');
global $db, $session, $paths, $template, $plugins; // Common objects
if(!isset($_GET['_mode'])) die('This script cannot be accessed directly.');
$_ob = '';
switch($_GET['_mode']) {
case "checkusername":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::checkusername($_GET['name']);
break;
case "getsource":
header('Content-type: text/plain');
$password = ( isset($_GET['pagepass']) ) ? $_GET['pagepass'] : false;
$revid = ( isset($_GET['revid']) ) ? intval($_GET['revid']) : 0;
$page = new PageProcessor($paths->page_id, $paths->namespace, $revid);
$page->password = $password;
$have_draft = false;
// Kinda hacky fix for issue 7: draft restore not offered for nonexistent pages
if ( ($src = $page->fetch_source()) || !$page->exists() )
{
$allowed = true;
$q = $db->sql_query('SELECT author, time_id, page_text, edit_summary, page_format FROM ' . table_prefix . 'logs WHERE log_type = \'page\' AND action = \'edit\'
AND page_id = \'' . $db->escape($paths->page_id) . '\'
AND namespace = \'' . $db->escape($paths->namespace) . '\'
AND is_draft = 1;');
if ( !$q )
$db->die_json();
if ( $db->numrows() > 0 )
{
$have_draft = true;
$draft_row = $db->fetchrow($q);
}
}
else if ( $src !== false )
{
$allowed = true;
$src = '';
}
else
{
$allowed = false;
$src = '';
}
$auth_edit = ( $session->get_permissions('edit_page') && ( $session->get_permissions('even_when_protected') || !$page->ns->page_protected ) );
$auth_wysiwyg = ( $session->get_permissions('edit_wysiwyg') );
$return = array(
'mode' => 'editor',
'src' => $src,
'auth_view_source' => $allowed,
'auth_edit' => $auth_edit,
'time' => time(),
'require_captcha' => false,
'allow_wysiwyg' => $auth_wysiwyg,
'revid' => $revid,
'have_draft' => false
);
$return['page_format'] = $page->ns->cdata['page_format'];
$code = $plugins->setHook('get_page_source');
foreach ( $code as $cmd )
{
eval($cmd);
}
if ( $have_draft )
{
$row =& $draft_row;
$return['have_draft'] = true;
$return['draft_author'] = $row['author'];
$return['draft_time'] = enano_date(ED_DATE | ED_TIME, intval($row['time_id']));
if ( isset($_GET['get_draft']) && @$_GET['get_draft'] === '1' )
{
$return['src'] = $row['page_text'];
$return['edit_summary'] = $row['edit_summary'];
$return['page_format'] = $row['page_format'];
}
}
$return['undo_info'] = array();
if ( $revid > 0 )
{
// Retrieve information about this revision and the current one
$q = $db->sql_query('SELECT l1.author AS currentrev_author, l2.author AS oldrev_author FROM ' . table_prefix . 'logs AS l1
LEFT JOIN ' . table_prefix . 'logs AS l2
ON ( l2.log_id = ' . $revid . '
AND l2.log_type = \'page\'
AND l2.action = \'edit\'
AND l2.page_id = \'' . $db->escape($paths->page_id) . '\'
AND l2.namespace = \'' . $db->escape($paths->namespace) . '\'
AND l2.is_draft != 1
)
WHERE l1.log_type = \'page\'
AND l1.action = \'edit\'
AND l1.page_id = \'' . $db->escape($paths->page_id) . '\'
AND l1.namespace = \'' . $db->escape($paths->namespace) . '\'
AND l1.time_id > ' . $page->revision_time . '
AND l1.is_draft != 1
ORDER BY l1.time_id DESC;');
if ( !$q )
$db->die_json();
if ( $db->numrows() > 0 )
{
$rev_count = $db->numrows() - 1;
if ( $rev_count == -1 )
{
$return = array(
'mode' => 'error',
'error' => '[Internal] No rows returned by revision info query. SQL:<pre>' . $db->latest_query . '</pre>'
);
}
else
{
$row = $db->fetchrow();
$return['undo_info'] = array(
'old_author' => $row['oldrev_author'],
'current_author' => $row['currentrev_author'],
'undo_count' => $rev_count
);
}
}
else
{
$return['revid'] = $revid = 0;
}
}
if ( $auth_edit && !$session->user_logged_in && getConfig('guest_edit_require_captcha') == '1' )
{
$return['require_captcha'] = true;
$return['captcha_id'] = $session->make_captcha();
}
$template->load_theme();
$return['toolbar_templates'] = $template->extract_vars('toolbar.tpl');
$return['edit_notice'] = $template->get_wiki_edit_notice();
$code = $plugins->setHook('ajax_getsource_send_data');
foreach ( $code as $cmd )
{
eval($cmd);
}
echo enano_json_encode($return);
break;
case "getpage":
// echo PageUtils::getpage($paths->page, false, ( (isset($_GET['oldid'])) ? $_GET['oldid'] : false ));
$output = new Output_Striptease();
$revision_id = ( (isset($_GET['oldid'])) ? intval($_GET['oldid']) : 0 );
$page = new PageProcessor( $paths->page_id, $paths->namespace, $revision_id );
$template->set_page($page);
$pagepass = ( isset($_REQUEST['pagepass']) ) ? $_REQUEST['pagepass'] : '';
$page->password = $pagepass;
$page->allow_redir = ( !isset($_GET['redirect']) || (isset($_GET['redirect']) && $_GET['redirect'] !== 'no') );
$page->send();
break;
case "savepage":
/* **** OBSOLETE **** */
break;
case "savepage_json":
header('Content-type: application/json');
if ( !isset($_POST['r']) )
die('Invalid request');
try
{
$request = enano_json_decode($_POST['r']);
if ( !isset($request['src']) || !isset($request['summary']) || !isset($request['minor_edit']) || !isset($request['time']) || !isset($request['draft']) )
die('Invalid request');
}
catch(Zend_Json_Exception $e)
{
die("JSON parsing failed. View as HTML to see full report.\n<br /><br />\n<pre>" . htmlspecialchars(strval($e)) . "</pre><br />Request: <pre>" . htmlspecialchars($_POST['r']) . "</pre>");
}
$time = intval($request['time']);
if ( $request['draft'] )
{
//
// The user wants to save a draft version of the page.
//
// Validate permissions
if ( !$session->get_permissions('edit_page') )
{
$return = array(
'mode' => 'error',
'error' => 'access_denied'
);
}
else
{
// Delete any draft copies if they exist
$q = $db->sql_query('DELETE FROM ' . table_prefix . 'logs WHERE log_type = \'page\' AND action = \'edit\'
AND page_id = \'' . $db->escape($paths->page_id) . '\'
AND namespace = \'' . $db->escape($paths->namespace) . '\'
AND is_draft = 1;');
if ( !$q )
$db->die_json();
// are we just supposed to delete the draft?
if ( $request['src'] === -1 )
{
$return = array(
'mode' => 'success',
'is_draft' => 'delete'
);
}
else
{
$src = RenderMan::preprocess_text($request['src'], false, false);
$draft_format = $db->escape($request['format']);
// Save the draft
if ( !preg_match('/^[a-z0-9_]+$/', $draft_format) )
{
$return = array(
'mode' => 'error',
'error' => 'Page format must match /^[a-z0-9_]+$/'
);
}
else
{
$q = $db->sql_query('INSERT INTO ' . table_prefix . 'logs ( log_type, action, page_id, namespace, author, author_uid, edit_summary, page_text, is_draft, time_id, page_format )
VALUES (
\'page\',
\'edit\',
\'' . $db->escape($paths->page_id) . '\',
\'' . $db->escape($paths->namespace) . '\',
\'' . $db->escape($session->username) . '\',
' . $session->user_id . ',
\'' . $db->escape($request['summary']) . '\',
\'' . $db->escape($src) . '\',
1,
' . time() . ',
\'' . $draft_format . '\'
);');
// Done!
$return = array(
'mode' => 'success',
'is_draft' => true
);
}
}
}
}
else
{
// Verify that no edits have been made since the editor was requested
$q = $db->sql_query('SELECT time_id, author FROM ' . table_prefix . "logs WHERE log_type = 'page' AND action = 'edit' AND page_id = '{$paths->page_id}' AND namespace = '{$paths->namespace}' AND is_draft != 1 ORDER BY time_id DESC LIMIT 1;");
if ( !$q )
$db->die_json();
$row = $db->fetchrow();
$db->free_result();
if ( $row['time_id'] > $time )
{
$return = array(
'mode' => 'obsolete',
'author' => $row['author'],
'date_string' => enano_date(ED_DATE | ED_TIME, $row['time_id']),
'time' => $row['time_id'] // time() ???
);
echo enano_json_encode($return);
break;
}
// Verify captcha, if needed
if ( !$session->user_logged_in && getConfig('guest_edit_require_captcha') == '1' )
{
if ( !isset($request['captcha_id']) || !isset($request['captcha_code']) )
{
die('Invalid request, need captcha metadata');
}
$code_correct = strtolower($session->get_captcha($request['captcha_id']));
$code_input = strtolower($request['captcha_code']);
if ( $code_correct !== $code_input )
{
$return = array(
'mode' => 'errors',
'errors' => array($lang->get('editor_err_captcha_wrong')),
'new_captcha' => $session->make_captcha()
);
echo enano_json_encode($return);
break;
}
}
// Verification complete. Start the PageProcessor and let it do the dirty work for us.
$page = new PageProcessor($paths->page_id, $paths->namespace);
if ( $page->update_page($request['src'], $request['summary'], ( $request['minor_edit'] == 1 ), $request['format'], $request) )
{
$return = array(
'mode' => 'success',
'is_draft' => false
);
}
else
{
$errors = array();
while ( $err = $page->pop_error() )
{
$errors[] = $err;
}
$return = array(
'mode' => 'errors',
'errors' => array_values($errors)
);
if ( !$session->user_logged_in && getConfig('guest_edit_require_captcha') == '1' )
{
$return['new_captcha'] = $session->make_captcha();
}
}
}
// If this is based on a draft version, delete the draft - we no longer need it.
if ( @$request['used_draft'] && !$request['draft'] )
{
$q = $db->sql_query('DELETE FROM ' . table_prefix . 'logs WHERE log_type = \'page\' AND action = \'edit\'
AND page_id = \'' . $db->escape($paths->page_id) . '\'
AND namespace = \'' . $db->escape($paths->namespace) . '\'
AND is_draft = 1;');
}
echo enano_json_encode($return);
break;
case "diff_cur":
// Lie about our content type to fool ad scripts
header('Content-type: application/xhtml+xml');
if ( !isset($_POST['text']) )
die('Invalid request');
$page = new PageProcessor($paths->page_id, $paths->namespace);
if ( !($src = $page->fetch_source()) )
{
die('Access denied');
}
$diff = RenderMan::diff($src, $_POST['text']);
if ( $diff == '<table class="diff"></table>' )
{
$diff = '<p>' . $lang->get('editor_msg_diff_empty') . '</p>';
}
echo '<div class="info-box">' . $lang->get('editor_msg_diff') . '</div>';
echo $diff;
break;
case "protect":
// echo PageUtils::protect($paths->page_id, $paths->namespace, (int)$_POST['level'], $_POST['reason']);
if ( @$_POST['reason'] === '__ROLLBACK__' )
{
// __ROLLBACK__ is a keyword for log entries.
die('"__ROLLBACK__" ain\'t gonna do it, buddy. Try to _not_ use reserved keywords next time, ok?');
}
$page = new PageProcessor($paths->page_id, $paths->namespace);
header('Content-type: application/json');
$result = $page->protect_page(intval($_POST['level']), $_POST['reason']);
echo enano_json_encode($result);
break;
case "histlist":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::histlist($paths->page_id, $paths->namespace);
break;
case "rollback":
$id = intval(@$_GET['id']);
$page = new PageProcessor($paths->page_id, $paths->namespace);
header('Content-type: application/json');
$result = $page->rollback_log_entry($id);
echo enano_json_encode($result);
break;
case "comments":
require_once(ENANO_ROOT.'/includes/comment.php');
$comments = new Comments($paths->page_id, $paths->namespace);
if ( isset($_POST['data']) )
{
$comments->process_json($_POST['data']);
}
else
{
die('{ "mode" : "error", "error" : "No input" }');
}
break;
case "rename":
$page = new PageProcessor($paths->page_id, $paths->namespace);
header('Content-type: application/json');
$result = $page->rename_page($_POST['newtitle']);
echo enano_json_encode($result);
break;
case "flushlogs":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::flushlogs($paths->page_id, $paths->namespace);
break;
case "deletepage":
require_once(ENANO_ROOT.'/includes/pageutils.php');
$reason = ( isset($_POST['reason']) ) ? $_POST['reason'] : false;
if ( empty($reason) )
die($lang->get('page_err_need_reason'));
echo PageUtils::deletepage($paths->page_id, $paths->namespace, $reason);
break;
case "delvote":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::delvote($paths->page_id, $paths->namespace);
break;
case "resetdelvotes":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::resetdelvotes($paths->page_id, $paths->namespace);
break;
case "getstyles":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::getstyles($_GET['id']);
break;
case "catedit":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::catedit($paths->page_id, $paths->namespace);
break;
case "catsave":
require_once(ENANO_ROOT.'/includes/pageutils.php');
$categories = !empty($_POST['categories']) ? $_POST['categories'] : array();
echo PageUtils::catsave($paths->page_id, $paths->namespace, $categories);
break;
case "setwikimode":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::setwikimode($paths->page_id, $paths->namespace, (int)$_GET['mode']);
break;
case "setpass":
require_once(ENANO_ROOT.'/includes/pageutils.php');
echo PageUtils::setpass($paths->page_id, $paths->namespace, $_POST['password']);
break;
case "fillusername":
break;
case "fillpagename":
break;
case "preview":
require_once(ENANO_ROOT.'/includes/pageutils.php');
$template->init_vars();
echo PageUtils::genPreview($_POST['text']);
break;
case "transform":
header('Content-type: text/javascript');
if ( !isset($_GET['to']) )
{
echo enano_json_encode(array(
'mode' => 'error',
'error' => '"to" not specified'
));
break;
}
if ( !isset($_POST['text']) )
{
echo enano_json_encode(array(
'mode' => 'error',
'error' => '"text" not specified (must be on POST)'
));
break;
}
switch($_GET['to'])
{
case 'xhtml':
$result = RenderMan::render($_POST['text'], RENDER_BLOCK | RENDER_NOSMILIES, false);
break;
case 'wikitext':
$result = RenderMan::reverse_render($_POST['text']);
break;
default:
$text =& $_POST['text'];
$result = false;
$code = $plugins->setHook('ajax_transform');
foreach ( $code as $cmd )
{
eval($cmd);
}
if ( !$result )
{
echo enano_json_encode(array(
'mode' => 'error',
'error' => 'Invalid target format'
));
break;
}
break;
}
// mostly for debugging, but I suppose this could be useful elsewhere.
if ( isset($_POST['plaintext']) )
die($result);
echo enano_json_encode(array(
'mode' => 'transformed_text',
'text' => $result
));
break;
case "pagediff":
require_once(ENANO_ROOT.'/includes/pageutils.php');
$id1 = ( isset($_GET['diff1']) ) ? (int)$_GET['diff1'] : false;
$id2 = ( isset($_GET['diff2']) ) ? (int)$_GET['diff2'] : false;
if(!$id1 || !$id2) { echo '<p>Invalid request.</p>'; $template->footer(); break; }
if(!preg_match('#^([0-9]+)$#', (string)$_GET['diff1']) ||
!preg_match('#^([0-9]+)$#', (string)$_GET['diff2'] )) { echo '<p>SQL injection attempt</p>'; $template->footer(); break; }
echo PageUtils::pagediff($paths->page_id, $paths->namespace, $id1, $id2);
break;
case "jsres":
die('// ERROR: this section is deprecated and has moved to includes/clientside/static/enano-lib-basic.js.');
break;
case "rdns":
if(!$session->get_permissions('mod_misc')) die('Go somewhere else for your reverse DNS info!');
$ip = $_GET['ip'];
if ( !is_valid_ip($ip) )
{
echo $lang->get('acpsl_err_invalid_ip');
}
$rdns = gethostbyaddr($ip);
if ( $rdns == $ip )
echo $lang->get('acpsl_err_ptr_no_resolve');
else echo $rdns;
break;
case 'acljson':
require_once(ENANO_ROOT.'/includes/pageutils.php');
$parms = ( isset($_POST['acl_params']) ) ? rawurldecode($_POST['acl_params']) : false;
echo PageUtils::acl_json($parms);
break;
case 'theme_list':
header('Content-type: application/json');
$return = array();
foreach ( $template->theme_list as $theme )
{
if ( $theme['enabled'] != 1 )
continue;
$return[] = array(
'theme_name' => $theme['theme_name'],
'theme_id' => $theme['theme_id'],
'have_thumb' => file_exists(ENANO_ROOT . "/themes/{$theme['theme_id']}/preview.png")
);
}
echo enano_json_encode($return);
break;
case "get_styles":
if ( !preg_match('/^[A-z0-9_-]+$/', $_GET['theme_id']) )
die(enano_json_encode(array()));
$theme_id = $_GET['theme_id'];
$return = array();
if ( $dr = @opendir(ENANO_ROOT . "/themes/$theme_id/css/") )
{
while ( $dh = @readdir($dr) )
{
if ( preg_match('/\.css$/', $dh) && $dh != '_printable.css' )
{
$return[] = preg_replace('/\.css$/', '', $dh);
}
}
}
else
{
$return = array(
'mode' => 'error',
'error' => 'Could not open directory.'
);
}
echo enano_json_encode($return);
break;
case "change_theme":
if ( !isset($_POST['theme_id']) || !isset($_POST['style_id']) )
{
die(enano_json_encode(array('mode' => 'error', 'error' => 'Invalid parameter')));
}
if ( !preg_match('/^([a-z0-9_-]+)$/i', $_POST['theme_id']) || !preg_match('/^([a-z0-9_-]+)$/i', $_POST['style_id']) )
{
die(enano_json_encode(array('mode' => 'error', 'error' => 'Invalid parameter')));
}
if ( !file_exists(ENANO_ROOT . '/themes/' . $_POST['theme_id'] . '/css/' . $_POST['style_id'] . '.css') )
{
die(enano_json_encode(array('mode' => 'error', 'error' => 'Can\'t find theme file: ' . ENANO_ROOT . '/themes/' . $_POST['theme_id'] . '/css/' . $_POST['style_id'] . '.css')));;
}
if ( !$session->user_logged_in )
{
die(enano_json_encode(array('mode' => 'error', 'error' => 'You must be logged in to change your theme')));
}
// Just in case something slipped through...
$theme_id = $db->escape($_POST['theme_id']);
$style_id = $db->escape($_POST['style_id']);
$e = $db->sql_query('UPDATE ' . table_prefix . "users SET theme = '$theme_id', style = '$style_id' WHERE user_id = $session->user_id;");
if ( !$e )
die( $db->get_error() );
echo enano_json_encode(array(
'success' => true
));
break;
case 'get_tags':
$ret = array('tags' => array(), 'user_level' => $session->user_level, 'can_add' => $session->get_permissions('tag_create'));
$q = $db->sql_query('SELECT t.tag_id, t.tag_name, pg.pg_target IS NOT NULL AS used_in_acl, t.user_id FROM '.table_prefix.'tags AS t
LEFT JOIN '.table_prefix.'page_groups AS pg
ON ( ( pg.pg_type = ' . PAGE_GRP_TAGGED . ' AND pg.pg_target=t.tag_name ) OR ( pg.pg_type IS NULL AND pg.pg_target IS NULL ) )
WHERE t.page_id=\'' . $db->escape($paths->page_id) . '\' AND t.namespace=\'' . $db->escape($paths->namespace) . '\';');
if ( !$q )
$db->_die();
while ( $row = $db->fetchrow() )
{
$can_del = true;
$perm = ( $row['user_id'] != $session->user_id ) ?
'tag_delete_other' :
'tag_delete_own';
if ( $row['user_id'] == 1 && !$session->user_logged_in )
// anonymous user trying to delete tag (hardcode blacklisted)
$can_del = false;
if ( !$session->get_permissions($perm) )
$can_del = false;
if ( $row['used_in_acl'] == 1 && !$session->get_permissions('edit_acl') && $session->user_level < USER_LEVEL_ADMIN )
$can_del = false;
$ret['tags'][] = array(
'id' => $row['tag_id'],
'name' => $row['tag_name'],
'can_del' => $can_del,
'acl' => ( $row['used_in_acl'] == 1 )
);
}
echo enano_json_encode($ret);
break;
case 'addtag':
$resp = array(
'success' => false,
'error' => 'No error',
'can_del' => ( $session->get_permissions('tag_delete_own') && $session->user_logged_in ),
'in_acl' => false
);
// first of course, are we allowed to tag pages?
if ( !$session->get_permissions('tag_create') )
{
$resp['error'] = 'You are not permitted to tag pages.';
die(enano_json_encode($resp));
}
// sanitize the tag name
$tag = sanitize_tag($_POST['tag']);
$tag = $db->escape($tag);
if ( strlen($tag) < 2 )
{
$resp['error'] = 'Tags must consist of at least 2 alphanumeric characters.';
die(enano_json_encode($resp));
}
// check if tag is already on page
$q = $db->sql_query('SELECT 1 FROM '.table_prefix.'tags WHERE page_id=\'' . $db->escape($paths->page_id) . '\' AND namespace=\'' . $db->escape($paths->namespace) . '\' AND tag_name=\'' . $tag . '\';');
if ( !$q )
$db->_die();
if ( $db->numrows() > 0 )
{
$resp['error'] = 'This page already has this tag.';
die(enano_json_encode($resp));
}
$db->free_result();
// tricky: make sure this tag isn't being used in some page group, and thus adding it could affect page access
$can_edit_acl = ( $session->get_permissions('edit_acl') || $session->user_level >= USER_LEVEL_ADMIN );
$q = $db->sql_query('SELECT 1 FROM '.table_prefix.'page_groups WHERE pg_type=' . PAGE_GRP_TAGGED . ' AND pg_target=\'' . $tag . '\';');
if ( !$q )
$db->_die();
if ( $db->numrows() > 0 && !$can_edit_acl )
{
$resp['error'] = 'This tag is used in an ACL page group, and thus can\'t be added to a page by people without administrator privileges.';
die(enano_json_encode($resp));
}
$resp['in_acl'] = ( $db->numrows() > 0 );
$db->free_result();
// we're good
$q = $db->sql_query('INSERT INTO '.table_prefix.'tags(tag_name,page_id,namespace,user_id) VALUES(\'' . $tag . '\', \'' . $db->escape($paths->page_id) . '\', \'' . $db->escape($paths->namespace) . '\', ' . $session->user_id . ');');
if ( !$q )
$db->_die();
$resp['success'] = true;
$resp['tag'] = $tag;
$resp['tag_id'] = $db->insert_id();
echo enano_json_encode($resp);
break;
case 'deltag':
$tag_id = intval($_POST['tag_id']);
if ( empty($tag_id) )
die('Invalid tag ID');
$q = $db->sql_query('SELECT t.tag_id, t.user_id, t.page_id, t.namespace, pg.pg_target IS NOT NULL AS used_in_acl FROM '.table_prefix.'tags AS t
LEFT JOIN '.table_prefix.'page_groups AS pg
ON ( pg.pg_id IS NULL OR ( pg.pg_target = t.tag_name AND pg.pg_type = ' . PAGE_GRP_TAGGED . ' ) )
WHERE t.tag_id=' . $tag_id . ';');
if ( !$q )
$db->_die();
if ( $db->numrows() < 1 )
die('Could not find a tag with that ID');
$row = $db->fetchrow();
$db->free_result();
if ( $row['page_id'] == $paths->page_id && $row['namespace'] == $paths->namespace )
$perms =& $session;
else
$perms = $session->fetch_page_acl($row['page_id'], $row['namespace']);
$perm = ( $row['user_id'] != $session->user_id ) ?
'tag_delete_other' :
'tag_delete_own';
if ( $row['user_id'] == 1 && !$session->user_logged_in )
// anonymous user trying to delete tag (hardcode blacklisted)
die('You are not authorized to delete this tag.');
if ( !$perms->get_permissions($perm) )
die('You are not authorized to delete this tag.');
if ( $row['used_in_acl'] == 1 && !$perms->get_permissions('edit_acl') && $session->user_level < USER_LEVEL_ADMIN )
die('You are not authorized to delete this tag.');
// We're good
$q = $db->sql_query('DELETE FROM '.table_prefix.'tags WHERE tag_id = ' . $tag_id . ';');
if ( !$q )
$db->_die();
echo 'success';
break;
case 'ping':
echo 'pong';
break;
default:
die('Hacking attempt');
break;
}
?>