| | |
|---|
| | | * Convert array of request parameters (prefixed with _) |
|---|
| | | * to a regular array with non-prefixed keys. |
|---|
| | | * |
|---|
| | | * @param int $mode Source to get value from (GPC) |
|---|
| | | * @param string $ignore PCRE expression to skip parameters by name |
|---|
| | | * @param int $mode Source to get value from (GPC) |
|---|
| | | * @param string $ignore PCRE expression to skip parameters by name |
|---|
| | | * @param boolean $allow_html Allow HTML tags in field value |
|---|
| | | * |
|---|
| | | * @return array Hash array with all request parameters |
|---|
| | | */ |
|---|
| | | public static function request2param($mode = null, $ignore = 'task|action') |
|---|
| | | public static function request2param($mode = null, $ignore = 'task|action', $allow_html = false) |
|---|
| | | { |
|---|
| | | $out = array(); |
|---|
| | | $src = $mode == self::INPUT_GET ? $_GET : ($mode == self::INPUT_POST ? $_POST : $_REQUEST); |
|---|
| | |
|---|
| | | foreach (array_keys($src) as $key) { |
|---|
| | | $fname = $key[0] == '_' ? substr($key, 1) : $key; |
|---|
| | | if ($ignore && !preg_match('/^(' . $ignore . ')$/', $fname)) { |
|---|
| | | $out[$fname] = self::get_input_value($key, $mode); |
|---|
| | | $out[$fname] = self::get_input_value($key, $mode, $allow_html); |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | |
|---|
| | | $source = self::xss_entity_decode($source); |
|---|
| | | $stripped = preg_replace('/[^a-z\(:;]/i', '', $source); |
|---|
| | | $evilexpr = 'expression|behavior|javascript:|import[^a]' . (!$allow_remote ? '|url\(' : ''); |
|---|
| | | |
|---|
| | | if (preg_match("/$evilexpr/i", $stripped)) { |
|---|
| | | return '/* evil! */'; |
|---|
| | | } |
|---|
| | | |
|---|
| | | $strict_url_regexp = '!url\s*\([ "\'](https?:)//[a-z0-9/._+-]+["\' ]\)!Uims'; |
|---|
| | | |
|---|
| | | // cut out all contents between { and } |
|---|
| | | while (($pos = strpos($source, '{', $last_pos)) && ($pos2 = strpos($source, '}', $pos))) { |
|---|
| | | $styles = substr($source, $pos+1, $pos2-($pos+1)); |
|---|
| | | $nested = strpos($source, '{', $pos+1); |
|---|
| | | if ($nested && $nested < $pos2) // when dealing with nested blocks (e.g. @media), take the inner one |
|---|
| | | $pos = $nested; |
|---|
| | | $length = $pos2 - $pos - 1; |
|---|
| | | $styles = substr($source, $pos+1, $length); |
|---|
| | | |
|---|
| | | // check every line of a style block... |
|---|
| | | if ($allow_remote) { |
|---|
| | | $a_styles = preg_split('/;[\r\n]*/', $styles, -1, PREG_SPLIT_NO_EMPTY); |
|---|
| | | |
|---|
| | | foreach ($a_styles as $line) { |
|---|
| | | $stripped = preg_replace('/[^a-z\(:;]/i', '', $line); |
|---|
| | | // ... and only allow strict url() values |
|---|
| | | $regexp = '!url\s*\([ "\'](https?:)//[a-z0-9/._+-]+["\' ]\)!Uims'; |
|---|
| | | if (stripos($stripped, 'url(') && !preg_match($regexp, $line)) { |
|---|
| | | if (stripos($stripped, 'url(') && !preg_match($strict_url_regexp, $line)) { |
|---|
| | | $a_styles = array('/* evil! */'); |
|---|
| | | break; |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | | $styles = join(";\n", $a_styles); |
|---|
| | | } |
|---|
| | | |
|---|
| | | $key = $replacements->add($styles); |
|---|
| | | $source = substr($source, 0, $pos+1) |
|---|
| | | . $replacements->get_replacement($key) |
|---|
| | | . substr($source, $pos2, strlen($source)-$pos2); |
|---|
| | | $last_pos = $pos+2; |
|---|
| | | $key = $replacements->add($styles); |
|---|
| | | $repl = $replacements->get_replacement($key); |
|---|
| | | $source = substr_replace($source, $repl, $pos+1, $length); |
|---|
| | | $last_pos = $pos2 - ($length - strlen($repl)); |
|---|
| | | } |
|---|
| | | |
|---|
| | | // remove html comments and add #container to each tag selector. |
|---|
| | | // also replace body definition because we also stripped off the <body> tag |
|---|
| | | $styles = preg_replace( |
|---|
| | | $source = preg_replace( |
|---|
| | | array( |
|---|
| | | '/(^\s*<!--)|(-->\s*$)/', |
|---|
| | | '/(^\s*<\!--)|(-->\s*$)/m', |
|---|
| | | '/(^\s*|,\s*|\}\s*)([a-z0-9\._#\*][a-z0-9\.\-_]*)/im', |
|---|
| | | '/'.preg_quote($container_id, '/').'\s+body/i', |
|---|
| | | ), |
|---|
| | |
|---|
| | | $source); |
|---|
| | | |
|---|
| | | // put block contents back in |
|---|
| | | $styles = $replacements->resolve($styles); |
|---|
| | | $source = $replacements->resolve($source); |
|---|
| | | |
|---|
| | | return $styles; |
|---|
| | | return $source; |
|---|
| | | } |
|---|
| | | |
|---|
| | | |
|---|
| | |
|---|
| | | */ |
|---|
| | | public static function parse_host($name, $host = '') |
|---|
| | | { |
|---|
| | | if (!is_string($name)) { |
|---|
| | | return $name; |
|---|
| | | } |
|---|
| | | |
|---|
| | | // %n - host |
|---|
| | | $n = preg_replace('/:\d+$/', '', $_SERVER['SERVER_NAME']); |
|---|
| | | // %t - host name without first part, e.g. %n=mail.domain.tld, %t=domain.tld |
|---|
| | |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | | $name = str_replace(array('%n', '%t', '%d', '%h', '%z', '%s'), array($n, $t, $d, $h, $z, $s[2]), $name); |
|---|
| | | return $name; |
|---|
| | | return str_replace(array('%n', '%t', '%d', '%h', '%z', '%s'), array($n, $t, $d, $h, $z, $s[2]), $name); |
|---|
| | | } |
|---|
| | | |
|---|
| | | |
|---|
| | |
|---|
| | | */ |
|---|
| | | public static function remote_addr() |
|---|
| | | { |
|---|
| | | foreach (array('HTTP_X_FORWARDED_FOR','HTTP_X_REAL_IP','REMOTE_ADDR') as $prop) { |
|---|
| | | if (!empty($_SERVER[$prop])) |
|---|
| | | return $_SERVER[$prop]; |
|---|
| | | if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { |
|---|
| | | $hosts = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'], 2); |
|---|
| | | return $hosts[0]; |
|---|
| | | } |
|---|
| | | |
|---|
| | | if (!empty($_SERVER['HTTP_X_REAL_IP'])) { |
|---|
| | | return $_SERVER['HTTP_X_REAL_IP']; |
|---|
| | | } |
|---|
| | | |
|---|
| | | if (!empty($_SERVER['REMOTE_ADDR'])) { |
|---|
| | | return $_SERVER['REMOTE_ADDR']; |
|---|
| | | } |
|---|
| | | |
|---|
| | | return ''; |
|---|
| | |
|---|
| | | */ |
|---|
| | | public static function strtotime($date) |
|---|
| | | { |
|---|
| | | $date = trim($date); |
|---|
| | | |
|---|
| | | // check for MS Outlook vCard date format YYYYMMDD |
|---|
| | | if (preg_match('/^([12][90]\d\d)([01]\d)([0123]\d)$/', $date, $m)) { |
|---|
| | | return mktime(0,0,0, intval($m[2]), intval($m[3]), intval($m[1])); |
|---|
| | | } |
|---|
| | | |
|---|
| | | // common little-endian formats, e.g. dd/mm/yyyy (not all are supported by strtotime) |
|---|
| | | if (preg_match('/^(\d{1,2})[.\/-](\d{1,2})[.\/-](\d{4})$/', $date, $m) |
|---|
| | | && $m[1] > 0 && $m[1] <= 31 && $m[2] > 0 && $m[2] <= 12 && $m[3] >= 1970 |
|---|
| | | ) { |
|---|
| | | return mktime(0,0,0, intval($m[2]), intval($m[1]), intval($m[3])); |
|---|
| | | } |
|---|
| | | $date = self::clean_datestr($date); |
|---|
| | | |
|---|
| | | // unix timestamp |
|---|
| | | if (is_numeric($date)) { |
|---|
| | | return (int) $date; |
|---|
| | | } |
|---|
| | | |
|---|
| | | // Clean malformed data |
|---|
| | | $date = preg_replace( |
|---|
| | | array( |
|---|
| | | '/GMT\s*([+-][0-9]+)/', // support non-standard "GMTXXXX" literal |
|---|
| | | '/[^a-z0-9\x20\x09:+-]/i', // remove any invalid characters |
|---|
| | | '/\s*(Mon|Tue|Wed|Thu|Fri|Sat|Sun)\s*/i', // remove weekday names |
|---|
| | | ), |
|---|
| | | array( |
|---|
| | | '\\1', |
|---|
| | | '', |
|---|
| | | '', |
|---|
| | | ), $date); |
|---|
| | | |
|---|
| | | $date = trim($date); |
|---|
| | | |
|---|
| | | // if date parsing fails, we have a date in non-rfc format. |
|---|
| | | // remove token from the end and try again |
|---|
| | |
|---|
| | | return (int) $ts; |
|---|
| | | } |
|---|
| | | |
|---|
| | | /** |
|---|
| | | * Date parsing function that turns the given value into a DateTime object |
|---|
| | | * |
|---|
| | | * @param string $date Date string |
|---|
| | | * |
|---|
| | | * @return object DateTime instance or false on failure |
|---|
| | | */ |
|---|
| | | public static function anytodatetime($date) |
|---|
| | | { |
|---|
| | | if (is_object($date) && is_a($date, 'DateTime')) { |
|---|
| | | return $date; |
|---|
| | | } |
|---|
| | | |
|---|
| | | $dt = false; |
|---|
| | | $date = self::clean_datestr($date); |
|---|
| | | |
|---|
| | | // try to parse string with DateTime first |
|---|
| | | if (!empty($date)) { |
|---|
| | | try { |
|---|
| | | $dt = new DateTime($date); |
|---|
| | | } |
|---|
| | | catch (Exception $e) { |
|---|
| | | // ignore |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | | // try our advanced strtotime() method |
|---|
| | | if (!$dt && ($timestamp = self::strtotime($date))) { |
|---|
| | | try { |
|---|
| | | $dt = new DateTime("@".$timestamp); |
|---|
| | | } |
|---|
| | | catch (Exception $e) { |
|---|
| | | // ignore |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | | return $dt; |
|---|
| | | } |
|---|
| | | |
|---|
| | | /** |
|---|
| | | * Clean up date string for strtotime() input |
|---|
| | | * |
|---|
| | | * @param string $date Date string |
|---|
| | | * |
|---|
| | | * @return string Date string |
|---|
| | | */ |
|---|
| | | public static function clean_datestr($date) |
|---|
| | | { |
|---|
| | | $date = trim($date); |
|---|
| | | |
|---|
| | | // check for MS Outlook vCard date format YYYYMMDD |
|---|
| | | if (preg_match('/^([12][90]\d\d)([01]\d)([0123]\d)$/', $date, $m)) { |
|---|
| | | return sprintf('%04d-%02d-%02d 00:00:00', intval($m[1]), intval($m[2]), intval($m[3])); |
|---|
| | | } |
|---|
| | | |
|---|
| | | // Clean malformed data |
|---|
| | | $date = preg_replace( |
|---|
| | | array( |
|---|
| | | '/GMT\s*([+-][0-9]+)/', // support non-standard "GMTXXXX" literal |
|---|
| | | '/[^a-z0-9\x20\x09:+-\/]/i', // remove any invalid characters |
|---|
| | | '/\s*(Mon|Tue|Wed|Thu|Fri|Sat|Sun)\s*/i', // remove weekday names |
|---|
| | | ), |
|---|
| | | array( |
|---|
| | | '\\1', |
|---|
| | | '', |
|---|
| | | '', |
|---|
| | | ), $date); |
|---|
| | | |
|---|
| | | $date = trim($date); |
|---|
| | | |
|---|
| | | // try to fix dd/mm vs. mm/dd discrepancy, we can't do more here |
|---|
| | | if (preg_match('/^(\d{1,2})[.\/-](\d{1,2})[.\/-](\d{4})$/', $date, $m)) { |
|---|
| | | $mdy = $m[2] > 12 && $m[1] <= 12; |
|---|
| | | $day = $mdy ? $m[2] : $m[1]; |
|---|
| | | $month = $mdy ? $m[1] : $m[2]; |
|---|
| | | $date = sprintf('%04d-%02d-%02d 00:00:00', intval($m[3]), $month, $day); |
|---|
| | | } |
|---|
| | | // I've found that YYYY.MM.DD is recognized wrong, so here's a fix |
|---|
| | | else if (preg_match('/^(\d{4})\.(\d{1,2})\.(\d{1,2})$/', $date)) { |
|---|
| | | $date = str_replace('.', '-', $date) . ' 00:00:00'; |
|---|
| | | } |
|---|
| | | |
|---|
| | | return $date; |
|---|
| | | } |
|---|
| | | |
|---|
| | | /* |
|---|
| | | * Idn_to_ascii wrapper. |
|---|
| | |
|---|
| | | * |
|---|
| | | * @param string Input string (UTF-8) |
|---|
| | | * @param boolean True to return list of words as array |
|---|
| | | * |
|---|
| | | * @return mixed Normalized string or a list of normalized tokens |
|---|
| | | */ |
|---|
| | | public static function normalize_string($str, $as_array = false) |
|---|
| | | { |
|---|
| | | // replace 4-byte unicode characters with '?' character, |
|---|
| | | // these are not supported in default utf-8 charset on mysql, |
|---|
| | | // the chance we'd need them in searching is very low |
|---|
| | | $str = preg_replace('/(' |
|---|
| | | . '\xF0[\x90-\xBF][\x80-\xBF]{2}' |
|---|
| | | . '|[\xF1-\xF3][\x80-\xBF]{3}' |
|---|
| | | . '|\xF4[\x80-\x8F][\x80-\xBF]{2}' |
|---|
| | | . ')/', '?', $str); |
|---|
| | | |
|---|
| | | // split by words |
|---|
| | | $arr = self::tokenize_string($str); |
|---|
| | | |
|---|
