diff options
Diffstat (limited to 'system/libraries/Trackback.php')
| -rwxr-xr-x[-rw-r--r--] | system/libraries/Trackback.php | 257 |
1 files changed, 129 insertions, 128 deletions
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php index 9b1737c5f..e29b35c7a 100644..100755 --- a/system/libraries/Trackback.php +++ b/system/libraries/Trackback.php @@ -2,11 +2,11 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.1.6 or newer * * @package CodeIgniter * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2008 - 2010, EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 1.0 @@ -27,7 +27,7 @@ * @link http://codeigniter.com/user_guide/libraries/trackback.html */ class CI_Trackback { - + var $time_format = 'local'; var $charset = 'UTF-8'; var $data = array('url' => '', 'title' => '', 'excerpt' => '', 'blog_name' => '', 'charset' => ''); @@ -40,28 +40,28 @@ class CI_Trackback { * * @access public */ - function CI_Trackback() + public function __construct() { log_message('debug', "Trackback Class Initialized"); } - + // -------------------------------------------------------------------- - + /** * Send Trackback * * @access public * @param array * @return bool - */ + */ function send($tb_data) - { + { if ( ! is_array($tb_data)) { $this->set_error('The send() method must be passed an array'); return FALSE; } - + // Pre-process the Trackback Data foreach (array('url', 'title', 'excerpt', 'blog_name', 'ping_url') as $item) { @@ -70,14 +70,14 @@ class CI_Trackback { $this->set_error('Required item missing: '.$item); return FALSE; } - + switch ($item) { case 'ping_url' : $$item = $this->extract_urls($tb_data[$item]); break; case 'excerpt' : $$item = $this->limit_characters($this->convert_xml(strip_tags(stripslashes($tb_data[$item])))); break; - case 'url' : $$item = str_replace('-', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item])))); + case 'url' : $$item = str_replace('-', '-', $this->convert_xml(strip_tags(stripslashes($tb_data[$item])))); break; default : $$item = $this->convert_xml(strip_tags(stripslashes($tb_data[$item]))); break; @@ -103,9 +103,9 @@ class CI_Trackback { // Build the Trackback data string $charset = ( ! isset($tb_data['charset'])) ? $this->charset : $tb_data['charset']; - + $data = "url=".rawurlencode($url)."&title=".rawurlencode($title)."&blog_name=".rawurlencode($blog_name)."&excerpt=".rawurlencode($excerpt)."&charset=".rawurlencode($charset); - + // Send Trackback(s) $return = TRUE; if (count($ping_url) > 0) @@ -116,27 +116,27 @@ class CI_Trackback { { $return = FALSE; } - } + } } return $return; } - + // -------------------------------------------------------------------- - + /** * Receive Trackback Data * * This function simply validates the incoming TB data. - * It returns false on failure and true on success. + * It returns FALSE on failure and TRUE on success. * If the data is valid it is set to the $this->data array * so that it can be inserted into a database. * * @access public * @return bool - */ + */ function receive() - { + { foreach (array('url', 'title', 'blog_name', 'excerpt') as $val) { if ( ! isset($_POST[$val]) OR $_POST[$val] == '') @@ -144,29 +144,29 @@ class CI_Trackback { $this->set_error('The following required POST variable is missing: '.$val); return FALSE; } - + $this->data['charset'] = ( ! isset($_POST['charset'])) ? 'auto' : strtoupper(trim($_POST['charset'])); - + if ($val != 'url' && function_exists('mb_convert_encoding')) { $_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']); } - + $_POST[$val] = ($val != 'url') ? $this->convert_xml(strip_tags($_POST[$val])) : strip_tags($_POST[$val]); - + if ($val == 'excerpt') { $_POST['excerpt'] = $this->limit_characters($_POST['excerpt']); } - + $this->data[$val] = $_POST[$val]; } return TRUE; - } - + } + // -------------------------------------------------------------------- - + /** * Send Trackback Error Message * @@ -177,15 +177,15 @@ class CI_Trackback { * @access public * @param string * @return void - */ + */ function send_error($message = 'Incomplete Information') { echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>"; exit; } - + // -------------------------------------------------------------------- - + /** * Send Trackback Success Message * @@ -194,44 +194,44 @@ class CI_Trackback { * * @access public * @return void - */ + */ function send_success() { echo "<?xml version=\"1.0\" encoding=\"utf-8\"?".">\n<response>\n<error>0</error>\n</response>"; exit; } - + // -------------------------------------------------------------------- - + /** * Fetch a particular item * * @access public * @param string * @return string - */ + */ function data($item) { return ( ! isset($this->data[$item])) ? '' : $this->data[$item]; } // -------------------------------------------------------------------- - + /** * Process Trackback * * Opens a socket connection and passes the data to - * the server. Returns true on success, false on failure + * the server. Returns TRUE on success, FALSE on failure * * @access public * @param string * @param string * @return bool - */ + */ function process($url, $data) { $target = parse_url($url); - + // Open the socket if ( ! $fp = @fsockopen($target['host'], 80)) { @@ -241,7 +241,7 @@ class CI_Trackback { // Build the path $ppath = ( ! isset($target['path'])) ? $url : $target['path']; - + $path = (isset($target['query']) && $target['query'] != "") ? $ppath.'?'.$target['query'] : $ppath; // Add the Trackback ID to the data string @@ -260,31 +260,32 @@ class CI_Trackback { // Was it successful? $this->response = ""; - + while( ! feof($fp)) { $this->response .= fgets($fp, 128); } @fclose($fp); - + + if (stristr($this->response, '<error>0</error>') === FALSE) { $message = 'An unknown error was encountered'; - + if (preg_match("/<message>(.*?)<\/message>/is", $this->response, $match)) { $message = trim($match['1']); } - + $this->set_error($message); return FALSE; } return TRUE; } - + // -------------------------------------------------------------------- - + /** * Extract Trackback URLs * @@ -295,34 +296,34 @@ class CI_Trackback { * @access public * @param string * @return string - */ + */ function extract_urls($urls) - { + { // Remove the pesky white space and replace with a comma. $urls = preg_replace("/\s*(\S+)\s*/", "\\1,", $urls); - + // If they use commas get rid of the doubles. $urls = str_replace(",,", ",", $urls); - + // Remove any comma that might be at the end if (substr($urls, -1) == ",") { $urls = substr($urls, 0, -1); } - + // Break into an array via commas $urls = preg_split('/[,]/', $urls); - + // Removes duplicates $urls = array_unique($urls); - + array_walk($urls, array($this, 'validate_url')); - + return $urls; } - + // -------------------------------------------------------------------- - + /** * Validate URL * @@ -331,7 +332,7 @@ class CI_Trackback { * @access public * @param string * @return string - */ + */ function validate_url($url) { $url = trim($url); @@ -341,58 +342,58 @@ class CI_Trackback { $url = "http://".$url; } } - + // -------------------------------------------------------------------- - + /** * Find the Trackback URL's ID * * @access public * @param string * @return string - */ + */ function get_id($url) - { + { $tb_id = ""; - - if (strstr($url, '?')) + + if (strpos($url, '?') !== FALSE) { $tb_array = explode('/', $url); $tb_end = $tb_array[count($tb_array)-1]; - + if ( ! is_numeric($tb_end)) { $tb_end = $tb_array[count($tb_array)-2]; } - + $tb_array = explode('=', $tb_end); $tb_id = $tb_array[count($tb_array)-1]; } else { $url = rtrim($url, '/'); - + $tb_array = explode('/', $url); $tb_id = $tb_array[count($tb_array)-1]; - + if ( ! is_numeric($tb_id)) { $tb_id = $tb_array[count($tb_array)-2]; } - } - + } + if ( ! preg_match ("/^([0-9]+)$/", $tb_id)) { - return false; + return FALSE; } else { return $tb_id; - } + } } - + // -------------------------------------------------------------------- - + /** * Convert Reserved XML characters to Entities * @@ -403,22 +404,22 @@ class CI_Trackback { function convert_xml($str) { $temp = '__TEMP_AMPERSANDS__'; - + $str = preg_replace("/&#(\d+);/", "$temp\\1;", $str); $str = preg_replace("/&(\w+);/", "$temp\\1;", $str); - + $str = str_replace(array("&","<",">","\"", "'", "-"), - array("&", "<", ">", """, "'", "-"), - $str); - + array("&", "<", ">", """, "'", "-"), + $str); + $str = preg_replace("/$temp(\d+);/","&#\\1;",$str); $str = preg_replace("/$temp(\w+);/","&\\1;", $str); - + return $str; - } - + } + // -------------------------------------------------------------------- - + /** * Character limiter * @@ -438,25 +439,25 @@ class CI_Trackback { } $str = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str)); - + if (strlen($str) <= $n) { return $str; } - + $out = ""; foreach (explode(' ', trim($str)) as $val) { - $out .= $val.' '; + $out .= $val.' '; if (strlen($out) >= $n) { return trim($out).$end_char; - } + } } } - + // -------------------------------------------------------------------- - + /** * High ASCII to Entities * @@ -469,58 +470,58 @@ class CI_Trackback { */ function convert_ascii($str) { - $count = 1; - $out = ''; - $temp = array(); - - for ($i = 0, $s = strlen($str); $i < $s; $i++) - { - $ordinal = ord($str[$i]); - - if ($ordinal < 128) - { - $out .= $str[$i]; - } - else - { - if (count($temp) == 0) - { - $count = ($ordinal < 224) ? 2 : 3; - } - - $temp[] = $ordinal; - - if (count($temp) == $count) - { - $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64); - - $out .= '&#'.$number.';'; - $count = 1; - $temp = array(); - } - } - } - - return $out; + $count = 1; + $out = ''; + $temp = array(); + + for ($i = 0, $s = strlen($str); $i < $s; $i++) + { + $ordinal = ord($str[$i]); + + if ($ordinal < 128) + { + $out .= $str[$i]; + } + else + { + if (count($temp) == 0) + { + $count = ($ordinal < 224) ? 2 : 3; + } + + $temp[] = $ordinal; + + if (count($temp) == $count) + { + $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64); + + $out .= '&#'.$number.';'; + $count = 1; + $temp = array(); + } + } + } + + return $out; } - + // -------------------------------------------------------------------- - + /** * Set error message * * @access public * @param string * @return void - */ + */ function set_error($msg) { log_message('error', $msg); $this->error_msg[] = $msg; } - + // -------------------------------------------------------------------- - + /** * Show error messages * @@ -528,15 +529,15 @@ class CI_Trackback { * @param string * @param string * @return string - */ + */ function display_errors($open = '<p>', $close = '</p>') - { + { $str = ''; foreach ($this->error_msg as $val) { $str .= $open.$val.$close; } - + return $str; } |