diff options
| -rw-r--r-- | search.php | 156 | ||||
| -rw-r--r-- | templates/search_form.html | 19 |
2 files changed, 175 insertions, 0 deletions
diff --git a/search.php b/search.php new file mode 100644 index 00000000..d2dbdf24 --- /dev/null +++ b/search.php @@ -0,0 +1,156 @@ +<?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 + )); diff --git a/templates/search_form.html b/templates/search_form.html new file mode 100644 index 00000000..16b5d4af --- /dev/null +++ b/templates/search_form.html @@ -0,0 +1,19 @@ +<div class="ban"> + <h2>Search</h2> + <form style="display:inline" action="" method="post"> + <p> + <label style="display:inline" for="search">Phrase:</label> + <input id="search" name="search" type="text" size="55" value="{{ search }}"> + <select name="board"> + <option value="none">Select board…</option> + {% for b in boards %} + <option value="{{ b }}"{% if b == board %} selected{% endif %}>/{{ b }}/</option> + {% endfor %} + </select> + <input type="submit" value="Search" /> + </p> + </form> + <p style="font-size:8pt;margin:5px"> + Search is case-insensitive and based on keywords. To match exact phrases, use "quotes". Use an asterisk (*) for wildcard.</p><p style="font-size:8pt;margin:5px">You may apply the following filters to your searches: <strong>id</strong>, <strong>thread</strong>, <strong>subject</strong>, and <strong>name</strong>. To apply a filter, simply add to your query, for example, <em>name:Anonymous</em> or <em>subject:"Some Thread"</em>. Wildcards cannot be used in filters. + </p> +</div> |