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<?php
require 'inc/functions.php';
$queries_per_minutes = Array(15, 2);
$queries_per_minutes_all = Array(50, 2);
$search_limit = 100;
$boards = Array('new', 'r9k', 'v', 'edu', 'azn', 'h', 'meta');
$body = Element('search_form.html', Array('boards' => $boards, 'board' => isset($_POST['board']) ? $_POST['board'] : false, 'search' => isset($_POST['search']) ? str_replace('"', '"', utf8tohtml($_POST['search'])) : false));
if(isset($_POST['search']) && !empty($_POST['search']) && isset($_POST['board']) && in_array($_POST['board'], $boards)) {
$phrase = $_POST['search'];
$_body = '';
$query = prepare("SELECT COUNT(*) FROM `search_queries` WHERE `ip` = :ip AND `time` > :time");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->bindValue(':time', time() - ($queries_per_minutes[1] * 60));
$query->execute() or error(db_error($query));
if($query->fetchColumn() > $queries_per_minutes[0])
error('Wait a while before searching again, please.');
$query = prepare("SELECT COUNT(*) FROM `search_queries` WHERE `time` > :time");
$query->bindValue(':time', time() - ($queries_per_minutes_all[1] * 60));
$query->execute() or error(db_error($query));
if($query->fetchColumn() > $queries_per_minutes_all[0])
error('Wait a while before searching again, please.');
$query = prepare("INSERT INTO `search_queries` VALUES (:ip, :time, :query)");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->bindValue(':time', time());
$query->bindValue(':query', $phrase);
$query->execute() or error(db_error($query));
_syslog(LOG_NOTICE, 'Searched /' . $_POST['board'] . '/ for "' . $phrase . '"');
openBoard($_POST['board']);
$filters = Array();
function search_filters($m) {
global $filters;
$name = $m[2];
$value = isset($m[4]) ? $m[4] : $m[3];
if(!in_array($name, Array('id', 'thread', 'subject', 'name'))) {
// unknown filter
return $m[0];
}
$filters[$name] = $value;
return $m[1];
}
$phrase = trim(preg_replace_callback('/(^|\s)(\w+):("(.*)?"|[^\s]*)/', 'search_filters', $phrase));
if(!preg_match('/[^*^\s]/', $phrase) && empty($filters)) {
_syslog(LOG_WARNING, 'Query too broad.');
$body .= '<p class="unimportant" style="text-align:center">(Query too broad.)</p>';
echo Element('page.html', Array(
'config'=>$config,
'title'=>'Search',
'body'=>$body,
));
exit;
}
// Escape escape character
$phrase = str_replace('!', '!!', $phrase);
// Remove SQL wildcard
$phrase = str_replace('%', '!%', $phrase);
// Use asterisk as wildcard to suit convention
$phrase = str_replace('*', '%', $phrase);
$like = '';
$match = Array();
// Find exact phrases
if(preg_match_all('/"(.+?)"/', $phrase, $m)) {
foreach($m[1] as &$quote) {
$phrase = str_replace("\"{$quote}\"", '', $phrase);
$match[] = $pdo->quote($quote);
}
}
$words = explode(' ', $phrase);
foreach($words as &$word) {
if(empty($word))
continue;
$match[] = $pdo->quote($word);
}
$like = '';
foreach($match as &$phrase) {
if(!empty($like))
$like .= ' AND ';
$phrase = preg_replace('/^\'(.+)\'$/', '\'%$1%\'', $phrase);
$like .= '`body` LIKE ' . $phrase . ' ESCAPE \'!\'';
}
foreach($filters as $name => $value) {
if(!empty($like))
$like .= ' AND ';
$like .= '`' . $name . '` = '. $pdo->quote($value);
}
$like = str_replace('%', '%%', $like);
$query = prepare(sprintf("SELECT * FROM `posts_%s` WHERE " . $like . " ORDER BY `time` DESC LIMIT :limit", $board['uri']));
$query->bindValue(':limit', $search_limit, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if($query->rowCount() == $search_limit) {
_syslog(LOG_WARNING, 'Query too broad.');
$body .= '<p class="unimportant" style="text-align:center">(Query too broad.)</p>';
echo Element('page.html', Array(
'config'=>$config,
'title'=>'Search',
'body'=>$body,
));
exit;
}
$temp = '';
while($post = $query->fetch()) {
if(!$post['thread']) {
$po = new Thread($post['id'], $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['sticky'], $post['locked'], $post['sage'], $post['embed']);
} else {
$po = new Post($post['id'], $post['thread'], $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['embed']);
}
$temp .= $po->build(true) . '<hr/>';
}
if(!empty($temp))
$_body .= '<fieldset><legend>' . $query->rowCount() . ' result' . ($query->rowCount() != 1 ? 's' : '') . ' in <a href="/' .
sprintf($config['board_path'], $board['uri']) . $config['file_index'] .
'">' .
sprintf($config['board_abbreviation'], $board['uri']) . ' - ' . $board['title'] .
'</a></legend>' . $temp . '</fieldset>';
$body .= '<hr/>';
if(!empty($_body))
$body .= $_body;
else
$body .= '<p style="text-align:center" class="unimportant">(No results.)</p>';
}
echo Element('page.html', Array(
'config'=>$config,
'title'=>'Search',
'body'=>'' . $body
));
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