* @copyright Curverider Ltd 2008-2009 * @link http://elgg.org/ */ /** * Get some input from variables passed on the GET or POST line. * * @param $variable string The variable we want to return. * @param $default mixed A default value for the variable if it is not found. * @param $filter_result If true then the result is filtered for bad tags. */ function get_input($variable, $default = "", $filter_result = true) { global $CONFIG; if (isset($CONFIG->input[$variable])) { $var = $CONFIG->input[$variable]; if ($filter_result) $var = filter_tags($var); return $var; } if (isset($_REQUEST[$variable])) { if (is_array($_REQUEST[$variable])) { $var = $_REQUEST[$variable]; } else { $var = trim($_REQUEST[$variable]); } if ($filter_result) $var = filter_tags($var); return $var; } return $default; } /** * Sets an input value that may later be retrieved by get_input * * @param string $variable The name of the variable * @param string $value The value of the variable */ function set_input($variable, $value) { global $CONFIG; if (!isset($CONFIG->input)) $CONFIG->input = array(); if (is_array($value)) { foreach ($value as $key => $val) $value[$key] = trim($val); $CONFIG->input[trim($variable)] = $value; } else $CONFIG->input[trim($variable)] = trim($value); } /** * Filter tags from a given string based on registered hooks. * @param $var * @return mixed The filtered result */ function filter_tags($var) { return trigger_plugin_hook('validate', 'input', null, $var); } /** * Sanitise file paths for input, ensuring that they begin and end with slashes etc. * * @param string $path The path * @return string */ function sanitise_filepath($path) { // Convert to correct UNIX paths $path = str_replace('\\', '/', $path); // Sort trailing slash $path = trim($path); $path = rtrim($path, " /"); $path = $path . "/"; return $path; } /** * Takes a string and turns any URLs into formatted links * * @param string $text The input string * @return string The output stirng with formatted links **/ function parse_urls($text) { return preg_replace_callback('/(?"\'\!\(\)]+)/i', create_function( '$matches', ' $url = $matches[1]; $urltext = str_replace("/", "/", $url); return "$urltext"; ' ), $text); } function autop($pee, $br = 1) { $pee = $pee . "\n"; // just to make things a little easier, pad the end $pee = preg_replace('|
\s*
|', "\n\n", $pee); // Space things out a little $allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)'; $pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee); $pee = preg_replace('!()!', "$1\n\n", $pee); $pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines if ( strpos($pee, ']*)>\s*|', "", $pee); // no pee inside object/embed $pee = preg_replace('|\s*\s*|', '', $pee); } $pee = preg_replace("/\n\n+/", "\n\n", $pee); // take care of duplicates $pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "

$1

\n", $pee); // make paragraphs, including one at the end $pee = preg_replace('|

\s*?

|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace $pee = preg_replace('!

([^<]+)\s*?(]*>)!', "

$1

$2", $pee); $pee = preg_replace( '|

|', "$1

", $pee ); $pee = preg_replace('!

\s*(]*>)\s*

!', "$1", $pee); // don't pee all over a tag $pee = preg_replace("|

(|", "$1", $pee); // problem with nested lists $pee = preg_replace('|

]*)>|i', "

", $pee); $pee = str_replace('

', '

', $pee); $pee = preg_replace('!

\s*(]*>)!', "$1", $pee); $pee = preg_replace('!(]*>)\s*

!', "$1", $pee); if ($br) { $pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", "", $matches[0]);'), $pee); $pee = preg_replace('|(?)\s*\n|', "
\n", $pee); // optionally make line breaks $pee = str_replace('', "\n", $pee); } $pee = preg_replace('!(]*>)\s*
!', "$1", $pee); $pee = preg_replace('!
(\s*]*>)!', '$1', $pee); if (strpos($pee, ')(.*?)!is', 'clean_pre', $pee ); $pee = preg_replace( "|\n

$|", '

', $pee ); return $pee; } function input_init() { if (ini_get_bool('magic_quotes_gpc') ) { //do keys as well, cos array_map ignores them function stripslashes_arraykeys($array) { if (is_array($array)) { $array2 = array(); foreach ($array as $key => $data) { if ($key != stripslashes($key)) { $array2[stripslashes($key)] = $data; } else { $array2[$key] = $data; } } return $array2; } else { return $array; } } function stripslashes_deep($value) { if (is_array($value)) { $value = stripslashes_arraykeys($value); $value = array_map('stripslashes_deep', $value); } else { $value = stripslashes($value); } return $value; } $_POST = stripslashes_arraykeys($_POST); $_GET = stripslashes_arraykeys($_GET); $_COOKIE = stripslashes_arraykeys($_COOKIE); $_REQUEST = stripslashes_arraykeys($_REQUEST); $_POST = array_map('stripslashes_deep', $_POST); $_GET = array_map('stripslashes_deep', $_GET); $_COOKIE = array_map('stripslashes_deep', $_COOKIE); $_REQUEST = array_map('stripslashes_deep', $_REQUEST); if (!empty($_SERVER['REQUEST_URI'])) { $_SERVER['REQUEST_URI'] = stripslashes($_SERVER['REQUEST_URI']); } if (!empty($_SERVER['QUERY_STRING'])) { $_SERVER['QUERY_STRING'] = stripslashes($_SERVER['QUERY_STRING']); } if (!empty($_SERVER['HTTP_REFERER'])) { $_SERVER['HTTP_REFERER'] = stripslashes($_SERVER['HTTP_REFERER']); } if (!empty($_SERVER['PATH_INFO'])) { $_SERVER['PATH_INFO'] = stripslashes($_SERVER['PATH_INFO']); } if (!empty($_SERVER['PHP_SELF'])) { $_SERVER['PHP_SELF'] = stripslashes($_SERVER['PHP_SELF']); } if (!empty($_SERVER['PATH_TRANSLATED'])) { $_SERVER['PATH_TRANSLATED'] = stripslashes($_SERVER['PATH_TRANSLATED']); } } } register_elgg_event_handler('init','system','input_init'); ?>