-if (! defined('SPAM_INI_FILE')) define('SPAM_INI_FILE', 'spam.ini.php');
-if (! defined('DOMAIN_INI_FILE')) define('DOMAIN_INI_FILE', 'domain.ini.php');
-
-// ---------------------
-// Compat etc
-
-// (PHP 4 >= 4.2.0): var_export(): mail-reporting and dump related
-if (! function_exists('var_export')) {
- function var_export() {
- return 'var_export() is not found on this server' . "\n";
- }
-}
-
-// (PHP 4 >= 4.2.0): preg_grep() enables invert option
-function preg_grep_invert($pattern = '//', $input = array())
-{
- static $invert;
- if (! isset($invert)) $invert = defined('PREG_GREP_INVERT');
-
- if ($invert) {
- return preg_grep($pattern, $input, PREG_GREP_INVERT);
- } else {
- $result = preg_grep($pattern, $input);
- if ($result) {
- return array_diff($input, preg_grep($pattern, $input));
- } else {
- return $input;
- }
- }
-}
-
-// ----
-
-// Very roughly, shrink the lines of var_export()
-// NOTE: If the same data exists, it must be corrupted.
-function var_export_shrink($expression, $return = FALSE, $ignore_numeric_keys = FALSE)
-{
- $result = var_export($expression, TRUE);
-
- $result = preg_replace(
- // Remove a newline and spaces
- '# => \n *array \(#', ' => array (',
- $result
- );
-
- if ($ignore_numeric_keys) {
- $result =preg_replace(
- // Remove numeric keys
- '#^( *)[0-9]+ => #m', '$1',
- $result
- );
- }
-
- if ($return) {
- return $result;
- } else {
- echo $result;
- return NULL;
- }
-}
-
-// Remove redundant values from array()
-function array_unique_recursive($array = array())
-{
- if (! is_array($array)) return $array;
-
- $tmp = array();
- foreach($array as $key => $value){
- if (is_array($value)) {
- $array[$key] = array_unique_recursive($value);
- } else {
- if (isset($tmp[$value])) {
- unset($array[$key]);
- } else {
- $tmp[$value] = TRUE;
- }
- }
- }
-
- return $array;
-}
-
-// Renumber all numeric keys from 0
-function array_renumber_numeric_keys(& $array)
-{
- if (! is_array($array)) return $array;
-
- $count = -1;
- $tmp = array();
- foreach($array as $key => $value){
- if (is_array($value)) array_renumber_numeric_keys($array[$key]); // Recurse
- if (is_numeric($key)) $tmp[$key] = ++$count;
- }
- array_rename_keys($array, $tmp);
-
- return $array;
-}
-
-// Roughly strings(1) using PCRE
-// This function is useful to:
-// * Reduce the size of data, from removing unprintable binary data
-// * Detect _bare_strings_ from binary data
-// References:
-// http://www.freebsd.org/cgi/man.cgi?query=strings (Man-page of GNU strings)
-// http://www.pcre.org/pcre.txt
-// Note: mb_ereg_replace() is one of mbstring extension's functions
-// and need to init its encoding.
-function strings($binary = '', $min_len = 4, $ignore_space = FALSE, $multibyte = FALSE)
-{
- // String only
- $binary = (is_array($binary) || $binary === TRUE) ? '' : strval($binary);
-
- $regex = $ignore_space ?
- '[^[:graph:] \t\n]+' : // Remove "\0" etc, and readable spaces
- '[^[:graph:][:space:]]+'; // Preserve readable spaces if possible
-
- $binary = $multibyte ?
- mb_ereg_replace($regex, "\n", $binary) :
- preg_replace('/' . $regex . '/s', "\n", $binary);
-
- if ($ignore_space) {
- $binary = preg_replace(
- array(
- '/[ \t]{2,}/',
- '/^[ \t]/m',
- '/[ \t]$/m',
- ),
- array(
- ' ',
- '',
- ''
- ),
- $binary);
- }
-
- if ($min_len > 1) {
- // The last character seems "\n" or not
- $br = (! empty($binary) && $binary[strlen($binary) - 1] == "\n") ? "\n" : '';
-
- $min_len = min(1024, intval($min_len));
- $regex = '/^.{' . $min_len . ',}/S';
- $binary = implode("\n", preg_grep($regex, explode("\n", $binary))) . $br;
- }
-
- return $binary;
-}
-
-// Reverse $string with specified delimiter
-function delimiter_reverse($string = 'foo.bar.example.com', $from_delim = '.', $to_delim = '.')
-{
- if (! is_string($string) || ! is_string($from_delim) || ! is_string($to_delim))
- return $string;
-
- // com.example.bar.foo
- return implode($to_delim, array_reverse(explode($from_delim, $string)));
-}
-
-
-// ---------------------
-// URI pickup
-
-// Return an array of URIs in the $string
-// [OK] http://nasty.example.org#nasty_string
-// [OK] http://nasty.example.org:80/foo/xxx#nasty_string/bar
-// [OK] ftp://nasty.example.org:80/dfsdfs
-// [OK] ftp://cnn.example.com&story=breaking_news@10.0.0.1/top_story.htm (from RFC3986)
-function uri_pickup($string = '')
-{
- if (! is_string($string)) return array();
-
- // Not available for: IDN(ignored)
- $array = array();
- preg_match_all(
- // scheme://userinfo@host:port/path/or/pathinfo/maybefile.and?query=string#fragment
- // Refer RFC3986 (Regex below is not strict)
- '#(\b[a-z][a-z0-9.+-]{1,8}):[/\\\]+' . // 1: Scheme
- '(?:' .
- '([^\s<>"\'\[\]/\#?@]*)' . // 2: Userinfo (Username)
- '@)?' .
- '(' .
- // 3: Host
- '\[[0-9a-f:.]+\]' . '|' . // IPv6([colon-hex and dot]): RFC2732
- '(?:[0-9]{1,3}\.){3}[0-9]{1,3}' . '|' . // IPv4(dot-decimal): 001.22.3.44
- '[a-z0-9_-][a-z0-9_.-]+[a-z0-9_-]' . // hostname(FQDN) : foo.example.org
- ')' .
- '(?::([0-9]*))?' . // 4: Port
- '((?:/+[^\s<>"\'\[\]/\#]+)*/+)?' . // 5: Directory path or path-info
- '([^\s<>"\'\[\]\#?]+)?' . // 6: File?
- '(?:\?([^\s<>"\'\[\]\#]+))?' . // 7: Query string
- '(?:\#([a-z0-9._~%!$&\'()*+,;=:@-]*))?' . // 8: Fragment
- '#i',
- $string, $array, PREG_SET_ORDER | PREG_OFFSET_CAPTURE
- );
-
- // Format the $array
- static $parts = array(
- 1 => 'scheme', 2 => 'userinfo', 3 => 'host', 4 => 'port',
- 5 => 'path', 6 => 'file', 7 => 'query', 8 => 'fragment'
- );
- $default = array('');
- foreach(array_keys($array) as $uri) {
- $_uri = & $array[$uri];
- array_rename_keys($_uri, $parts, TRUE, $default);
- $offset = $_uri['scheme'][1]; // Scheme's offset = URI's offset
- foreach(array_keys($_uri) as $part) {
- $_uri[$part] = & $_uri[$part][0]; // Remove offsets
- }
- }
-
- foreach(array_keys($array) as $uri) {
- $_uri = & $array[$uri];
- if ($_uri['scheme'] === '') {
- unset($array[$uri]); // Considererd harmless
- continue;
- }
- unset($_uri[0]); // Matched string itself
- $_uri['area']['offset'] = $offset; // Area offset for area_measure()
- }
-
- return $array;
-}
-
-// Normalize an array of URI arrays
-// NOTE: Give me the uri_pickup() results
-function uri_pickup_normalize(& $pickups, $destructive = TRUE)
-{
- if (! is_array($pickups)) return $pickups;
-
- if ($destructive) {
- foreach (array_keys($pickups) as $key) {
- $_key = & $pickups[$key];
- $_key['scheme'] = isset($_key['scheme']) ? scheme_normalize($_key['scheme']) : '';
- $_key['host'] = isset($_key['host']) ? host_normalize($_key['host']) : '';
- $_key['port'] = isset($_key['port']) ? port_normalize($_key['port'], $_key['scheme'], FALSE) : '';
- $_key['path'] = isset($_key['path']) ? strtolower(path_normalize($_key['path'])) : '';
- $_key['file'] = isset($_key['file']) ? file_normalize($_key['file']) : '';
- $_key['query'] = isset($_key['query']) ? query_normalize($_key['query']) : '';
- $_key['fragment'] = isset($_key['fragment']) ? strtolower($_key['fragment']) : '';
- }
- } else {
- foreach (array_keys($pickups) as $key) {
- $_key = & $pickups[$key];
- $_key['scheme'] = isset($_key['scheme']) ? scheme_normalize($_key['scheme']) : '';
- $_key['host'] = isset($_key['host']) ? strtolower($_key['host']) : '';
- $_key['port'] = isset($_key['port']) ? port_normalize($_key['port'], $_key['scheme'], FALSE) : '';
- $_key['path'] = isset($_key['path']) ? path_normalize($_key['path']) : '';
- }
- }
-
- return $pickups;
-}
-
-// An URI array => An URI (See uri_pickup())
-// USAGE:
-// $pickups = uri_pickup('a string include some URIs');
-// $uris = array();
-// foreach (array_keys($pickups) as $key) {
-// $uris[$key] = uri_pickup_implode($pickups[$key]);
-// }
-function uri_pickup_implode($uri = array())
-{
- if (empty($uri) || ! is_array($uri)) return NULL;
-
- $tmp = array();
- if (isset($uri['scheme']) && $uri['scheme'] !== '') {
- $tmp[] = & $uri['scheme'];
- $tmp[] = '://';
- }
- if (isset($uri['userinfo']) && $uri['userinfo'] !== '') {
- $tmp[] = & $uri['userinfo'];
- $tmp[] = '@';
- }
- if (isset($uri['host']) && $uri['host'] !== '') {
- $tmp[] = & $uri['host'];
- }
- if (isset($uri['port']) && $uri['port'] !== '') {
- $tmp[] = ':';
- $tmp[] = & $uri['port'];
- }
- if (isset($uri['path']) && $uri['path'] !== '') {
- $tmp[] = & $uri['path'];
- }
- if (isset($uri['file']) && $uri['file'] !== '') {
- $tmp[] = & $uri['file'];
- }
- if (isset($uri['query']) && $uri['query'] !== '') {
- $tmp[] = '?';
- $tmp[] = & $uri['query'];
- }
- if (isset($uri['fragment']) && $uri['fragment'] !== '') {
- $tmp[] = '#';
- $tmp[] = & $uri['fragment'];
- }
-
- return implode('', $tmp);
-}
-
-// $array['something'] => $array['wanted']
-function array_rename_keys(& $array, $keys = array('from' => 'to'), $force = FALSE, $default = '')
-{
- if (! is_array($array) || ! is_array($keys)) return FALSE;
-
- // Nondestructive test
- if (! $force)
- foreach(array_keys($keys) as $from)
- if (! isset($array[$from]))
- return FALSE;
-
- foreach($keys as $from => $to) {
- if ($from === $to) continue;
- if (! $force || isset($array[$from])) {
- $array[$to] = & $array[$from];
- unset($array[$from]);
- } else {
- $array[$to] = $default;
- }
- }
-
- return TRUE;
-}
-
-// ---------------------
-// Area pickup
-
-// Pickup all of markup areas
-function area_pickup($string = '', $method = array())
-{
- $area = array();
- if (empty($method)) return $area;
-
- // Anchor tag pair by preg_match and preg_match_all()
- // [OK] <a href></a>
- // [OK] <a href= >Good site!</a>
- // [OK] <a href= "#" >test</a>
- // [OK] <a href="http://nasty.example.com">visit http://nasty.example.com/</a>
- // [OK] <a href=\'http://nasty.example.com/\' >discount foobar</a>
- // [NG] <a href="http://ng.example.com">visit http://ng.example.com _not_ended_
- $regex = '#<a\b[^>]*\bhref\b[^>]*>.*?</a\b[^>]*(>)#is';
- if (isset($method['area_anchor'])) {
- $areas = array();
- $count = isset($method['asap']) ?
- preg_match($regex, $string) :
- preg_match_all($regex, $string, $areas);
- if (! empty($count)) $area['area_anchor'] = $count;
- }
- if (isset($method['uri_anchor'])) {
- $areas = array();
- preg_match_all($regex, $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- foreach(array_keys($areas) as $_area) {
- $areas[$_area] = array(
- $areas[$_area][0][1], // Area start (<a href>)
- $areas[$_area][1][1], // Area end (</a>)
- );
- }
- if (! empty($areas)) $area['uri_anchor'] = $areas;
- }
-
- // phpBB's "BBCode" pair by preg_match and preg_match_all()
- // [OK] [url][/url]
- // [OK] [url]http://nasty.example.com/[/url]
- // [OK] [link]http://nasty.example.com/[/link]
- // [OK] [url=http://nasty.example.com]visit http://nasty.example.com/[/url]
- // [OK] [link http://nasty.example.com/]buy something[/link]
- $regex = '#\[(url|link)\b[^\]]*\].*?\[/\1\b[^\]]*(\])#is';
- if (isset($method['area_bbcode'])) {
- $areas = array();
- $count = isset($method['asap']) ?
- preg_match($regex, $string) :
- preg_match_all($regex, $string, $areas, PREG_SET_ORDER);
- if (! empty($count)) $area['area_bbcode'] = $count;
- }
- if (isset($method['uri_bbcode'])) {
- $areas = array();
- preg_match_all($regex, $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- foreach(array_keys($areas) as $_area) {
- $areas[$_area] = array(
- $areas[$_area][0][1], // Area start ([url])
- $areas[$_area][2][1], // Area end ([/url])
- );
- }
- if (! empty($areas)) $area['uri_bbcode'] = $areas;
- }
-
- // Various Wiki syntax
- // [text_or_uri>text_or_uri]
- // [text_or_uri:text_or_uri]
- // [text_or_uri|text_or_uri]
- // [text_or_uri->text_or_uri]
- // [text_or_uri text_or_uri] // MediaWiki
- // MediaWiki: [http://nasty.example.com/ visit http://nasty.example.com/]
-
- return $area;
-}
-
-// If in doubt, it's a little doubtful
-// if (Area => inside <= Area) $brief += -1
-function area_measure($areas, & $array, $belief = -1, $a_key = 'area', $o_key = 'offset')
-{
- if (! is_array($areas) || ! is_array($array)) return;
-
- $areas_keys = array_keys($areas);
- foreach(array_keys($array) as $u_index) {
- $offset = isset($array[$u_index][$o_key]) ?
- intval($array[$u_index][$o_key]) : 0;
- foreach($areas_keys as $a_index) {
- if (isset($array[$u_index][$a_key])) {
- $offset_s = intval($areas[$a_index][0]);
- $offset_e = intval($areas[$a_index][1]);
- // [Area => inside <= Area]
- if ($offset_s < $offset && $offset < $offset_e) {
- $array[$u_index][$a_key] += $belief;
- }
- }
- }
- }
-}
-
-// ---------------------
-// Spam-uri pickup
-
-// Preprocess: Removing uninterest part for URI detection
-function spam_uri_removing_hocus_pocus($binary = '', $method = array())
-{
- $length = 4 ; // 'http'(1) and '://'(2) and 'fqdn'(1)
- if (is_array($method)) {
- // '<a'(2) or 'href='(5) or '>'(1) or '</a>'(4)
- // '[uri'(4) or ']'(1) or '[/uri]'(6)
- if (isset($method['area_anchor']) || isset($method['uri_anchor']) ||
- isset($method['area_bbcode']) || isset($method['uri_bbcode']))
- $length = 1; // Seems not effective
- }
-
- // Removing sequential spaces and too short lines
- $binary = strings($binary, $length, TRUE, FALSE); // Multibyte NOT needed
-
- // Remove words (has no '<>[]:') between spaces
- $binary = preg_replace('/[ \t][\w.,()\ \t]+[ \t]/', ' ', $binary);
-
- return $binary;
-}
-
-// Preprocess: Domain exposure callback (See spam_uri_pickup_preprocess())
-// http://victim.example.org/?foo+site:nasty.example.com+bar
-// => http://nasty.example.com/?refer=victim.example.org
-// NOTE: 'refer=' is not so good for (at this time).
-// Consider about using IP address of the victim, try to avoid that.
-function _preg_replace_callback_domain_exposure($matches = array())
-{
- $result = '';
-
- // Preserve the victim URI as a complicity or ...
- if (isset($matches[5])) {
- $result =
- $matches[1] . '://' . // scheme
- $matches[2] . '/' . // victim.example.org
- $matches[3]; // The rest of all (before victim)
- }
-
- // Flipped URI
- if (isset($matches[4])) {
- $result =
- $matches[1] . '://' . // scheme
- $matches[4] . // nasty.example.com
- '/?refer=' . strtolower($matches[2]) . // victim.example.org
- ' ' . $result;
- }
-
- return $result;
-}
-
-// Preprocess: rawurldecode() and adding space(s) and something
-// to detect/count some URIs _if possible_
-// NOTE: It's maybe danger to var_dump(result). [e.g. 'javascript:']
-// [OK] http://victim.example.org/?site:nasty.example.org
-// [OK] http://victim.example.org/nasty.example.org
-// [OK] http://victim.example.org/go?http%3A%2F%2Fnasty.example.org
-// [OK] http://victim.example.org/http://nasty.example.org
-function spam_uri_pickup_preprocess($string = '', $method = array())
-{
- if (! is_string($string)) return '';
-
- $string = spam_uri_removing_hocus_pocus(rawurldecode($string), $method);
- //var_dump(htmlspecialchars($string));
-
- // Domain exposure (simple)
- // http://victim.example.org/nasty.example.org/path#frag
- // => http://nasty.example.org/?refer=victim.example.org and original
- $string = preg_replace(
- '#h?ttp://' .
- '(' .
- 'ime\.nu' . '|' . // 2ch.net
- 'ime\.st' . '|' . // 2ch.net
- 'link\.toolbot\.com' . '|' .
- 'urlx\.org' .
- ')' .
- '/([a-z0-9.%_-]+\.[a-z0-9.%_-]+)#i', // nasty.example.org
- 'http://$2/?refer=$1 $0', // Preserve $0 or remove?
- $string
- );
-
- // Domain exposure (gate-big5)
- // http://victim.example.org/gate/big5/nasty.example.org/path
- // => http://nasty.example.org/?refer=victim.example.org and original
- $string = preg_replace(
- '#h?ttp://' .
- '(' .
- 'big5.51job.com' . '|' .
- 'big5.china.com' . '|' .
- 'big5.xinhuanet.com' . '|' .
- ')' .
- '/gate/big5' .
- '/([a-z0-9.%_-]+\.[a-z0-9.%_-]+)' .
- '#i', // nasty.example.org
- 'http://$2/?refer=$1 $0', // Preserve $0 or remove?
- $string
- );
-
- // Domain exposure (site:) See _preg_replace_callback_domain_exposure()
- $string = preg_replace_callback(
- array(
- '#(h?ttp)://' . // 1:Scheme
- // 2:Host
- '(' .
- '(?:[a-z0-9_.-]+\.)?[a-z0-9_-]+\.[a-z0-9_-]+' .
- // Something Google: http://www.google.com/supported_domains
- // AltaVista: http://es.altavista.com/web/results?q=site%3Anasty.example.org+foobar
- // Live Search: search.live.com
- // MySpace: http://sads.myspace.com/Modules/Search/Pages/Search.aspx?_snip_&searchString=site:nasty.example.org
- // (also searchresults.myspace.com)
- // alltheweb.com
- // search.bbc.co.uk
- // search.orange.co.uk
- // ...
- ')' .
- '/' .
- '([a-z0-9?=&.%_/\'\\\+-]+)' . // 3:path/?query=foo+bar+
- '\bsite:([a-z0-9.%_-]+\.[a-z0-9.%_-]+)' . // 4:site:nasty.example.com
- '()' . // 5:Preserve or remove?
- '#i',
- ),
- '_preg_replace_callback_domain_exposure',
- $string
- );
-
- // URI exposure (uriuri => uri uri)
- $string = preg_replace(
- array(
- '#(?<! )(?:https?|ftp):/#i',
- // '#[a-z][a-z0-9.+-]{1,8}://#i',
- // '#[a-z][a-z0-9.+-]{1,8}://#i'
- ),
- ' $0',
- $string
- );
-
- return $string;
-}
-
-// Main function of spam-uri pickup,
-// A wrapper function of uri_pickup()
-function spam_uri_pickup($string = '', $method = array())
-{
- if (! is_array($method) || empty($method)) {
- $method = check_uri_spam_method();
- }