<?php
-// $Id: spam.php,v 1.52 2006/12/02 09:22:37 henoheno Exp $
-// Copyright (C) 2006 PukiWiki Developers Team
+// $Id: spam.php,v 1.210 2008/12/28 15:37:07 henoheno Exp $
+// Copyright (C) 2006-2007 PukiWiki Developers Team
// License: GPL v2 or (at your option) any later version
-
+//
// Functions for Concept-work of spam-uri metrics
+//
+// (PHP 4 >= 4.3.0): preg_match_all(PREG_OFFSET_CAPTURE): $method['uri_XXX'] related feature
-if (! defined('SPAM_INI_FILE')) define('SPAM_INI_FILE', 'spam.ini.php');
-
-// 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 = '', $normalize = TRUE,
- $preserve_rawuri = FALSE, $preserve_chunk = TRUE)
-{
- // 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
- '[^\s<>"\'\[\]:/\#?]+' . // FQDN: foo.example.org
- ')' .
- '(?::([0-9]*))?' . // 4: Port
- '((?:/+[^\s<>"\'\[\]/\#]+)*/+)?' . // 5: Directory path or path-info
- '([^\s<>"\'\[\]\#]+)?' . // 6: File and query string
- '(?:\#([a-z0-9._~%!$&\'()*+,;=:@-]*))?' . // 7: Fragment
- '#i',
- $string, $array, PREG_SET_ORDER | PREG_OFFSET_CAPTURE
- );
- //var_dump(recursive_map('htmlspecialchars', $array));
+if (! defined('SPAM_INI_FILE')) define('SPAM_INI_FILE', 'spam.ini.php');
+if (! defined('DOMAIN_INI_FILE')) define('DOMAIN_INI_FILE', 'domain.ini.php');
- // Shrink $array
- static $parts = array(
- 1 => 'scheme', 2 => 'userinfo', 3 => 'host', 4 => 'port',
- 5 => 'path', 6 => 'file', 7 => 'fragment'
- );
- $default = array('');
- foreach(array_keys($array) as $uri) {
- array_rename_keys($array[$uri], $parts, TRUE, $default);
- $offset = $array[$uri]['scheme'][1]; // Scheme's offset
-
- foreach(array_keys($array[$uri]) as $part) {
- // Remove offsets for each part
- $array[$uri][$part] = & $array[$uri][$part][0];
- }
-
- if ($normalize) {
- $array[$uri]['scheme'] = scheme_normalize($array[$uri]['scheme']);
- if ($array[$uri]['scheme'] === '') {
- unset ($array[$uri]);
- continue;
- }
- $array[$uri]['host'] = strtolower($array[$uri]['host']);
- $array[$uri]['port'] = port_normalize($array[$uri]['port'], $array[$uri]['scheme'], FALSE);
- $array[$uri]['path'] = path_normalize($array[$uri]['path']);
- if ($preserve_rawuri) $array[$uri]['rawuri'] = & $array[$uri][0];
- } else {
- $array[$uri]['uri'] = & $array[$uri][0]; // Raw
- }
- unset($array[$uri][0]); // Matched string itself
- if (! $preserve_chunk) {
- unset(
- $array[$uri]['scheme'],
- $array[$uri]['userinfo'],
- $array[$uri]['host'],
- $array[$uri]['port'],
- $array[$uri]['path'],
- $array[$uri]['file'],
- $array[$uri]['fragment']
- );
- }
+// ---------------------
+// Compat etc
- $array[$uri]['area']['offset'] = $offset;
+// (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";
}
-
- return $array;
}
-// Domain exposure callback (See spam_uri_pickup_preprocess())
-// http://victim.example.org/?foo+site:nasty.example.com+bar
-// => http://nasty.example.com/?refer=victim.example.org
-// NOTE: 'refer=' is not so good for (at this time).
-// Consider about using IP address of the victim, try to avoid that.
-function _preg_replace_callback_domain_exposure($matches = array())
+// (PHP 4 >= 4.2.0): preg_grep() enables invert option
+function preg_grep_invert($pattern = '//', $input = array())
{
- $result = '';
+ static $invert;
+ if (! isset($invert)) $invert = defined('PREG_GREP_INVERT');
- // Preserve the victim URI as a complicity or ...
- if (isset($matches[5])) {
- $result =
- $matches[1] . '://' . // scheme
- $matches[2] . '/' . // victim.example.org
- $matches[3]; // The rest of all (before victim)
+ if ($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 $input;
+ }
}
+}
- // Flipped URI
- if (isset($matches[4])) {
- $result =
- $matches[1] . '://' . // scheme
- $matches[4] . // nasty.example.com
- '/?refer=' . strtolower($matches[2]) . // victim.example.org
- ' ' . $result;
- }
- return $result;
-}
+// ---------------------
+// Utilities
-// Preprocess: rawurldecode() and adding space(s) and something
-// to detect/count some URIs _if possible_
-// NOTE: It's maybe danger to var_dump(result). [e.g. 'javascript:']
-// [OK] http://victim.example.org/go?http%3A%2F%2Fnasty.example.org
-// [OK] http://victim.example.org/http://nasty.example.org
-function spam_uri_pickup_preprocess($string = '')
+// 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, $ignore_numeric_keys = FALSE)
{
- if (! is_string($string)) return '';
+ $result = var_export($expression, TRUE);
- $string = rawurldecode($string);
-
- // Domain exposure (See _preg_replace_callback_domain_exposure())
- $string = preg_replace_callback(
- array(
- // Something Google: http://www.google.com/supported_domains
- '#(http)://([a-z0-9.]+\.google\.[a-z]{2,3}(?:\.[a-z]{2})?)/' .
- '([a-z0-9?=&.%_+-]+)' . // ?query=foo+
- '\bsite:([a-z0-9.%_-]+)' . // site:nasty.example.com
- //'()' . // Preserve or remove?
- '#i',
- ),
- '_preg_replace_callback_domain_exposure',
- $string
+ $result = preg_replace(
+ // Remove a newline and spaces
+ '# => \n *array \(#', ' => array (',
+ $result
);
- // 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',
- $string
- );
+ if ($ignore_numeric_keys) {
+ $result =preg_replace(
+ // Remove numeric keys
+ '#^( *)[0-9]+ => #m', '$1',
+ $result
+ );
+ }
- return $string;
+ if ($return) {
+ return $result;
+ } else {
+ echo $result;
+ return NULL;
+ }
}
-// Main function of spam-uri pickup
-function spam_uri_pickup($string = '', $area = array())
+// Data structure: Create an array they _refer_only_one_ value
+function one_value_array($num = 0, $value = NULL)
{
- if (! is_array($area) || empty($area)) {
- $area = array(
- 'anchor' => TRUE,
- 'bbcode' => TRUE,
- );
- }
-
- $string = spam_uri_pickup_preprocess($string);
-
- $array = uri_pickup($string);
-
- // Area elevation for '(especially external)link' intension
- if (! empty($array)) {
-
- $area_shadow = array();
- foreach(array_keys($array) as $key){
- $area_shadow[$key] = & $array[$key]['area'];
- $area_shadow[$key]['anchor'] = 0;
- $area_shadow[$key]['bbcode'] = 0;
- }
-
- // Anchor tags by preg_match_all()
- // [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_
- // [NG] <a href= >Good site!</a> <a href= "#" >test</a>
- if (isset($area['anchor'])) {
- $areas = array();
- preg_match_all('#<a\b[^>]*href[^>]*>.*?</a\b[^>]*(>)#i',
- $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- //var_dump(recursive_map('htmlspecialchars', $areas));
- foreach(array_keys($areas) as $_area) {
- $areas[$_area] = array(
- $areas[$_area][0][1], // Area start (<a href>)
- $areas[$_area][1][1], // Area end (</a>)
- );
- }
- area_measure($areas, $area_shadow, 1, 'anchor');
- }
-
- // phpBB's "BBCode" by preg_match_all()
- // [url]http://nasty.example.com/[/url]
- // [link]http://nasty.example.com/[/link]
- // [url=http://nasty.example.com]visit http://nasty.example.com/[/url]
- // [link http://nasty.example.com/]buy something[/link]
- // ?? [url=][/url]
- if (isset($area['bbcode'])) {
- $areas = array();
- preg_match_all('#\[(url|link)\b[^\]]*\].*?\[/\1\b[^\]]*(\])#i',
- $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- //var_dump(recursive_map('htmlspecialchars', $areas));
- foreach(array_keys($areas) as $_area) {
- $areas[$_area] = array(
- $areas[$_area][0][1], // Area start ([url])
- $areas[$_area][2][1], // Area end ([/url])
- );
- }
- area_measure($areas, $area_shadow, 1, 'bbcode');
- }
-
- // 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/]
+ $num = max(0, intval($num));
+ $array = array();
- // Remove 'offset's for area_measure()
- foreach(array_keys($array) as $key)
- unset($array[$key]['area']['offset']);
+ for ($i = 0; $i < $num; $i++) {
+ $array[] = & $value;
}
return $array;
}
-// $array['something'] => $array['wanted']
-function array_rename_keys(& $array, $keys = array('from' => 'to'), $force = FALSE, $default = '')
+// Reverse $string with specified delimiter
+function delimiter_reverse($string = 'foo.bar.example.com', $from_delim = '.', $to_delim = NULL)
{
- if (! is_array($array) || ! is_array($keys)) return FALSE;
+ $to_null = ($to_delim === NULL);
- // 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] = $default;
+ if (! is_string($from_delim) || (! $to_null && ! is_string($to_delim))) {
+ return FALSE;
+ }
+ if (is_array($string)) {
+ // Map, Recurse
+ $count = count($string);
+ $from = one_value_array($count, $from_delim);
+ if ($to_null) {
+ // Note: array_map() vanishes all keys
+ return array_map('delimiter_reverse', $string, $from);
+ } else {
+ $to = one_value_array($count, $to_delim);
+ // Note: array_map() vanishes all keys
+ return array_map('delimiter_reverse', $string, $from, $to);
}
}
+ if (! is_string($string)) {
+ return FALSE;
+ }
- return TRUE;
+ // Returns com.example.bar.foo
+ if ($to_null) $to_delim = & $from_delim;
+ return implode($to_delim, array_reverse(explode($from_delim, $string)));
}
-// If in doubt, it's a little doubtful
-function area_measure($areas, & $array, $belief = -1, $a_key = 'area', $o_key = 'offset')
+// ksort() by domain
+function ksort_by_domain(& $array)
{
- if (! is_array($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;
- }
- }
+ $sort = array();
+ foreach(array_keys($array) as $key) {
+ $reversed = delimiter_reverse($key);
+ if ($reversed !== FALSE) {
+ $sort[$reversed] = $key;
}
}
+ ksort($sort, SORT_STRING);
+
+ $result = array();
+ foreach($sort as $key) {
+ $result[$key] = & $array[$key];
+ }
+
+ $array = $result;
+}
+
+// Roughly strings(1) using PCRE
+// This function is useful to:
+// * Reduce the size of data, from removing unprintable binary data
+// * Detect _bare_strings_ from binary data
+// References:
+// http://www.freebsd.org/cgi/man.cgi?query=strings (Man-page of GNU strings)
+// http://www.pcre.org/pcre.txt
+// Note: mb_ereg_replace() is one of mbstring extension's functions
+// and need to init its encoding.
+function strings($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 $binary;
}
// ---------------------
-// Part Two
+// Utilities: Arrays
-// Scheme normalization: Renaming the schemes
-// snntp://example.org => nntps://example.org
-// NOTE: Keep the static lists simple. See also port_normalize().
-function scheme_normalize($scheme = '', $considerd_harmfull = TRUE)
+// Count leaves (A leaf = value that is not an array, or an empty array)
+function array_count_leaves($array = array(), $count_empty = FALSE)
{
- // Abbreviations considerable they don't have link intension
- static $abbrevs = array(
- 'ttp' => 'http',
- 'ttps' => 'https',
- );
+ if (! is_array($array) || (empty($array) && $count_empty)) return 1;
- // Alias => normalized
- static $aliases = array(
- 'pop' => 'pop3',
- 'news' => 'nntp',
- 'imap4' => 'imap',
- 'snntp' => 'nntps',
- 'snews' => 'nntps',
- 'spop3' => 'pop3s',
- 'pops' => 'pop3s',
- );
+ // Recurse
+ $count = 0;
+ foreach ($array as $part) {
+ $count += array_count_leaves($part, $count_empty);
+ }
+ return $count;
+}
- $scheme = strtolower(trim($scheme));
- if (isset($abbrevs[$scheme])) {
- if ($considerd_harmfull) {
- $scheme = $abbrevs[$scheme];
+// Merge two leaves
+// Similar to PHP array_merge_leaves(), except strictly preserving keys as string
+function array_merge_leaves($array1, $array2, $sort_keys = TRUE)
+{
+ // Array(s) only
+ $is_array1 = is_array($array1);
+ $is_array2 = is_array($array2);
+ if ($is_array1) {
+ if ($is_array2) {
+ ; // Pass
} else {
- $scheme = '';
+ return $array1;
}
+ } else if ($is_array2) {
+ return $array2;
+ } else {
+ return $array2; // Not array ($array1 is overwritten)
}
- if (isset($aliases[$scheme])) $scheme = $aliases[$scheme];
- return $scheme;
+ $keys_all = array_merge(array_keys($array1), array_keys($array2));
+ if ($sort_keys) sort($keys_all, SORT_STRING);
+
+ $result = array();
+ foreach($keys_all as $key) {
+ $isset1 = isset($array1[$key]);
+ $isset2 = isset($array2[$key]);
+ if ($isset1 && $isset2) {
+ // Recurse
+ $result[$key] = array_merge_leaves($array1[$key], $array2[$key], $sort_keys);
+ } else if ($isset1) {
+ $result[$key] = & $array1[$key];
+ } else {
+ $result[$key] = & $array2[$key];
+ }
+ }
+ return $result;
}
-// Port normalization: Suppress the (redundant) default port
-// HTTP://example.org:80/ => http://example.org/
-// HTTP://example.org:8080/ => http://example.org:8080/
-// HTTPS://example.org:443/ => https://example.org/
-function port_normalize($port, $scheme, $scheme_normalize = TRUE)
+// An array-leaves to a flat array
+function array_flat_leaves($array, $unique = TRUE)
{
- // Schemes that users _maybe_ want to add protocol-handlers
- // to their web browsers. (and attackers _maybe_ want to use ...)
- // Reference: http://www.iana.org/assignments/port-numbers
- static $array = array(
- // scheme => default port
- 'ftp' => 21,
- 'ssh' => 22,
- 'telnet' => 23,
- 'smtp' => 25,
- 'tftp' => 69,
- 'gopher' => 70,
- 'finger' => 79,
- 'http' => 80,
- 'pop3' => 110,
- 'sftp' => 115,
- 'nntp' => 119,
- 'imap' => 143,
- 'irc' => 194,
- 'wais' => 210,
- 'https' => 443,
- 'nntps' => 563,
- 'rsync' => 873,
- 'ftps' => 990,
- 'telnets' => 992,
- 'imaps' => 993,
- 'ircs' => 994,
- 'pop3s' => 995,
- 'mysql' => 3306,
- );
-
- $port = trim($port);
- if ($port === '') return $port;
+ if (! is_array($array)) return $array;
- if ($scheme_normalize) $scheme = scheme_normalize($scheme);
- if (isset($array[$scheme]) && $port == $array[$scheme])
- $port = ''; // Ignore the defaults
+ $tmp = array();
+ foreach(array_keys($array) as $key) {
+ if (is_array($array[$key])) {
+ // Recurse
+ foreach(array_flat_leaves($array[$key]) as $_value) {
+ $tmp[] = $_value;
+ }
+ } else {
+ $tmp[] = & $array[$key];
+ }
+ }
- return $port;
+ return $unique ? array_values(array_unique($tmp)) : $tmp;
}
-// Path normalization
-// http://example.org => http://example.org/
-// http://example.org#hoge => http://example.org/#hoge
-// http://example.org/path/a/b/./c////./d => http://example.org/path/a/b/c/d
-// http://example.org/path/../../a/../back => http://example.org/back
-function path_normalize($path = '', $divider = '/', $addroot = TRUE)
+// $array['something'] => $array['wanted']
+function array_rename_keys(& $array, $keys = array('from' => 'to'), $force = FALSE, $default = '')
{
- if (! is_string($path) || $path == '') {
- $path = $addroot ? $divider : '';
- } else {
- $path = trim($path);
- $last = ($path[strlen($path) - 1] == $divider) ? $divider : '';
- $array = explode($divider, $path);
+ if (! is_array($array) || ! is_array($keys)) return FALSE;
- // Remove paddings
- foreach(array_keys($array) as $key) {
- if ($array[$key] == '' || $array[$key] == '.')
- unset($array[$key]);
- }
- // Back-track
- $tmp = array();
- foreach($array as $value) {
- if ($value == '..') {
- array_pop($tmp);
- } else {
- array_push($tmp, $value);
+ // Nondestructive test
+ if (! $force) {
+ foreach(array_keys($keys) as $from) {
+ if (! isset($array[$from])) {
+ return FALSE;
}
}
- $array = & $tmp;
+ }
- $path = $addroot ? $divider : '';
- if (! empty($array)) $path .= implode($divider, $array) . $last;
+ foreach($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 $path;
+ return TRUE;
}
-// An URI array => An URI (See uri_pickup())
-function uri_array_implode($uri = array())
+// Remove redundant values from array()
+function array_unique_recursive($array = array())
{
- if (empty($uri) || ! is_array($uri)) return NULL;
-
+ if (! is_array($array)) return $array;
+
$tmp = array();
- if (isset($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['fragment']) && $uri['fragment'] !== '') {
- $tmp[] = '#';
- $tmp[] = & $uri['fragment'];
+ foreach($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 implode('', $tmp);
+ return $array;
}
+
// ---------------------
// Part One : Checker
+// Rough implementation of globbing
+//
+// USAGE: $regex = '/^' . generate_glob_regex('*.txt', '/') . '$/i';
+//
function generate_glob_regex($string = '', $divider = '/')
{
static $from = array(
// 23 => ']',
);
- if (is_array($string)) {
- // Recurse
- return '(?:' .
- implode('|', // OR
- array_map('generate_glob_regex',
- $string,
- array_pad(array(), count($string), $divider)
- )
- ) .
- ')';
+ if (! is_string($string)) return '';
+
+ $string = str_replace($from, $mid, $string); // Hide
+ $string = preg_quote($string, $divider);
+ $string = str_replace($mid, $to, $string); // Unhide
+
+ return $string;
+}
+
+// Generate host (FQDN, IPv4, ...) regex
+// 'localhost' : Matches with 'localhost' only
+// 'example.org' : Matches with 'example.org' only (See host_normalize() about 'www')
+// '.example.org' : Matches with ALL FQDN ended with '.example.org'
+// '*.example.org' : Almost the same of '.example.org' except 'www.example.org'
+// '10.20.30.40' : Matches with IPv4 address '10.20.30.40' only
+// [TODO] '192.' : Matches with all IPv4 hosts started with '192.'
+// TODO: IPv4, CIDR?, IPv6
+function generate_host_regex($string = '', $divider = '/')
+{
+ if (! is_string($string)) return '';
+
+ if (mb_strpos($string, '.') === FALSE) {
+ // localhost
+ return generate_glob_regex($string, $divider);
+ }
+
+ if (is_ip($string)) {
+ // IPv4
+ return generate_glob_regex($string, $divider);
} else {
- $string = str_replace($from, $mid, $string); // Hide
- $string = preg_quote($string, $divider);
- $string = str_replace($mid, $to, $string); // Unhide
- return $string;
+ // FQDN or something
+ $part = explode('.', $string, 2);
+ if ($part[0] == '') {
+ // .example.org
+ $part[0] = '(?:.*\.)?';
+ } else if ($part[0] == '*') {
+ // *.example.org
+ $part[0] = '.*\.';
+ } else {
+ // example.org, etc
+ return generate_glob_regex($string, $divider);
+ }
+ $part[1] = generate_glob_regex($part[1], $divider);
+ return implode('', $part);
}
}
-// TODO: Ignore list
-// TODO: preg_grep() ?
-// TODO: Multi list
-function is_badhost($hosts = '', $asap = TRUE)
+// Rough hostname checker
+// TODO: Strict digit, 0x, CIDR, '999.999.999.999', ':', '::G'
+function is_ip($string = '')
{
- static $regex;
-
- if (! isset($regex)) {
- $regex = array();
- $regex['badhost'] = array();
-
- // Sample
- if (TRUE) {
- $blocklist['badhost'] = array(
- //'*', // Deny all uri
- //'10.20.*.*', // 10.20.example.com also matches
- //'*.blogspot.com', // Blog services subdomains
- //array('blogspot.com', '*.blogspot.com')
- );
- foreach ($blocklist['badhost'] as $part) {
- $regex['badhost'][] = '/^' . generate_glob_regex($part) . '$/i';
- }
- }
+ if (! is_string($string)) return FALSE;
+
+ if (strpos($string, ':') !== FALSE) {
+ return 6; // Seems IPv6
+ }
+
+ if (preg_match('/^' .
+ '(?:[0-9]{1,3}\.){3}[0-9]{1,3}' . '|' .
+ '(?:[0-9]{1,3}\.){1,3}' . '$/',
+ $string)) {
+ return 4; // Seems IPv4(dot-decimal)
+ }
- // Load
+ return FALSE; // Seems not IP
+}
+
+// Load SPAM_INI_FILE and return parsed one
+function get_blocklist($list = '')
+{
+ static $regexes;
+
+ if ($list === NULL) {
+ $regexes = NULL; // Unset
+ return array();
+ }
+
+ if (! isset($regexes)) {
+ $regexes = array();
if (file_exists(SPAM_INI_FILE)) {
$blocklist = array();
- require(SPAM_INI_FILE);
- foreach ($blocklist['badhost'] as $part) {
- $regex['badhost'][] = '/^' . generate_glob_regex($part) . '$/i';
+
+ include(SPAM_INI_FILE);
+ // $blocklist['list'] = array(
+ // //'goodhost' => FALSE;
+ // 'badhost' => TRUE;
+ // );
+ // $blocklist['badhost'] = array(
+ // '*.blogspot.com', // Blog services's subdomains (only)
+ // 'IANA-examples' => '#^(?:.*\.)?example\.(?:com|net|org)$#',
+ // );
+
+ foreach(array(
+ 'pre',
+ 'list',
+ ) as $special) {
+
+ if (! isset($blocklist[$special])) continue;
+
+ $regexes[$special] = $blocklist[$special];
+
+ foreach(array_keys($blocklist[$special]) as $_list) {
+ if (! isset($blocklist[$_list])) continue;
+
+ foreach ($blocklist[$_list] as $key => $value) {
+ if (is_array($value)) {
+ $regexes[$_list][$key] = array();
+ foreach($value as $_key => $_value) {
+ get_blocklist_add($regexes[$_list][$key], $_key, $_value);
+ }
+ } else {
+ get_blocklist_add($regexes[$_list], $key, $value);
+ }
+ }
+
+ unset($blocklist[$_list]);
+ }
}
}
}
- //var_dump($regex);
- $result = 0;
- if (! is_array($hosts)) $hosts = array($hosts);
+ if ($list === '') {
+ return $regexes; // ALL of
+ } else if (isset($regexes[$list])) {
+ return $regexes[$list]; // A part of
+ } else {
+ return array(); // Found nothing
+ }
+}
- foreach($hosts as $host) {
- if (! is_string($host)) $host = '';
+// Subroutine of get_blocklist(): Add new regex to the $array
+function get_blocklist_add(& $array, $key = 0, $value = '*.example.org/path/to/file.html')
+{
+ if (is_string($key)) {
+ $array[$key] = & $value; // Treat $value as a regex for FQDN(host)s
+ } else {
+ $array[$value] = '#^' . generate_host_regex($value, '#') . '$#i';
+ }
+}
- // badhost
- foreach ($regex['badhost'] as $_regex) {
- if (preg_match($_regex, $host)) {
- ++$result;
- if ($asap) {
- return $result;
- } else {
- break;
+// Blocklist metrics: Separate $host, to $blocked and not blocked
+function blocklist_distiller(& $hosts, $keys = array('goodhost', 'badhost'), $asap = FALSE)
+{
+ if (! is_array($hosts)) $hosts = array($hosts);
+ if (! is_array($keys)) $keys = array($keys);
+
+ $list = get_blocklist('list');
+ $blocked = array();
+
+ foreach($keys as $key){
+ foreach (get_blocklist($key) as $label => $regex) {
+ if (is_array($regex)) {
+ foreach($regex as $_label => $_regex) {
+ $group = preg_grep($_regex, $hosts);
+ if ($group) {
+ $hosts = array_diff($hosts, $group);
+ $blocked[$key][$label][$_label] = $group;
+ if ($asap && $list[$key]) break;
+ }
+ }
+ } else {
+ $group = preg_grep($regex, $hosts);
+ if ($group) {
+ $hosts = array_diff($hosts, $group);
+ $blocked[$key][$label] = $group;
+ if ($asap && $list[$key]) break;
}
}
}
}
- return $result;
+ return $blocked;
}
-// Default (enabled) methods and thresholds
+
+// ---------------------
+
+
+// Default (enabled) methods and thresholds (for content insertion)
function check_uri_spam_method($times = 1, $t_area = 0, $rule = TRUE)
{
$times = intval($times);
$t_area = intval($t_area);
- // Thresholds
- $method = array(
- 'quantity' => 8 * $times, // Allow N URIs
- 'non_uniq' => 3 * $times, // Allow N duped (and normalized) URIs
+ $positive = array(
+ // Thresholds
+ 'quantity' => 8 * $times, // Allow N URIs
+ 'non_uniqhost' => 3 * $times, // Allow N duped (and normalized) Hosts
+ //'non_uniquri'=> 3 * $times, // Allow N duped (and normalized) URIs
+
+ // Areas
+ 'area_anchor' => $t_area, // Using <a href> HTML tag
+ 'area_bbcode' => $t_area, // Using [url] or [link] BBCode
+ //'uri_anchor' => $t_area, // URI inside <a href> HTML tag
+ //'uri_bbcode' => $t_area, // URI inside [url] or [link] BBCode
);
-
- // Areas
- $area = array(
- //'total' => $t_area, // Allow N areas total, enabled below
- 'anchor' => $t_area, // Inside <a href> HTML tag
- 'bbcode' => $t_area, // Inside [url] or [link] BBCode
- );
-
- // Rules
- $rules = array(
- 'badhost' => TRUE, // Check badhost
- );
-
- // Remove unused
- foreach (array_keys($method) as $key) {
- if ($method[$key] < 0) unset($method[$key]);
+ if ($rule) {
+ $bool = array(
+ // Rules
+ //'asap' => TRUE, // Quit or return As Soon As Possible
+ 'uniqhost' => TRUE, // Show uniq host (at block notification mail)
+ 'badhost' => TRUE, // Check badhost
+ );
+ } else {
+ $bool = array();
}
- foreach (array_keys($area) as $key) {
- if ($area[$key] < 0) unset($area[$key]);
+
+ // Remove non-$positive values
+ foreach (array_keys($positive) as $key) {
+ if ($positive[$key] < 0) unset($positive[$key]);
}
- $area = empty($area) ? array() : array('area' => $area);
- $rules = $rule ? $rules : array();
- return $method + $area + $rules;
+ return $positive + $bool;
}
-
-// TODO return TRUE or FALSE!
// Simple/fast spam check
-function check_uri_spam($target = '', $method = array(), $asap = TRUE)
+function check_uri_spam($target = '', $method = array())
{
- $is_spam = FALSE;
+ // Return value
$progress = array(
- 'quantity' => 0,
- 'area' => array(
- 'total' => 0,
- 'anchor' => 0,
- 'bbcode' => 0,
- ),
- 'non_uniq' => 0,
- 'uniqhost' => 0,
- 'badhost' => 0,
- '_action' => array(),
- );
+ 'method' => array(
+ // Theme to do => Dummy, optional value, or optional array()
+ //'quantity' => 8,
+ //'uniqhost' => TRUE,
+ //'non_uniqhost'=> 3,
+ //'non_uniquri' => 3,
+ //'badhost' => TRUE,
+ //'area_anchor' => 0,
+ //'area_bbcode' => 0,
+ //'uri_anchor' => 0,
+ //'uri_bbcode' => 0,
+ ),
+ 'sum' => array(
+ // Theme => Volume found (int)
+ ),
+ 'is_spam' => array(
+ // Flag. If someting defined here,
+ // one or more spam will be included
+ // in this report
+ ),
+ 'blocked' => array(
+ // Hosts blocked
+ //'category' => array(
+ // 'host',
+ //)
+ ),
+ 'hosts' => array(
+ // Hosts not blocked
+ ),
+ );
+
+ // ----------------------------------------
+ // Aliases
+
+ $sum = & $progress['sum'];
+ $is_spam = & $progress['is_spam'];
+ $progress['method'] = & $method; // Argument
+ $blocked = & $progress['blocked'];
+ $hosts = & $progress['hosts'];
+ $asap = isset($method['asap']);
+
+ // ----------------------------------------
+ // Init
if (! is_array($method) || empty($method)) {
$method = check_uri_spam_method();
}
+ foreach(array_keys($method) as $key) {
+ if (! isset($sum[$key])) $sum[$key] = 0;
+ }
+ if (! isset($sum['quantity'])) $sum['quantity'] = 0;
+
+ // ----------------------------------------
+ // Recurse
if (is_array($target)) {
- // Recurse
foreach($target as $str) {
- list($_is_spam, $_progress) = check_uri_spam($str, $method, $asap);
- $is_spam = $is_spam || $_is_spam;
- $progress['quantity'] += $_progress['quantity'];
- $progress['area']['total'] += $_progress['area']['total'];
- $progress['area']['anchor'] += $_progress['area']['anchor'];
- $progress['area']['bbcode'] += $_progress['area']['bbcode'];
- $progress['non_uniq'] += $_progress['non_uniq'];
- $progress['uniqhost'] += $_progress['uniqhost'];
- $progress['badhost'] += $_progress['badhost'];
- foreach($_progress['_action'] as $key => $value) {
- if (is_array($value)) {
- foreach(array_keys($value) as $_key) {
- $progress['_action'][$key][$_key] = TRUE;
- }
+ if (! is_string($str)) continue;
+
+ $_progress = check_uri_spam($str, $method); // Recurse
+
+ // Merge $sum
+ $_sum = & $_progress['sum'];
+ foreach (array_keys($_sum) as $key) {
+ if (! isset($sum[$key])) {
+ $sum[$key] = & $_sum[$key];
} else {
- $progress['_action'][$key] = TRUE;
+ $sum[$key] += $_sum[$key];
}
}
- if ($is_spam && $asap) break;
- }
- } else {
- $pickups = spam_uri_pickup($target);
- if (! empty($pickups)) {
- $progress['quantity'] += count($pickups);
-
- // URI quantity
- if ((! $is_spam || ! $asap) && isset($method['quantity']) &&
- $progress['quantity'] > $method['quantity']) {
- $is_spam = TRUE;
- $progress['_action']['quantity'] = TRUE;
+
+ // Merge $is_spam
+ $_is_spam = & $_progress['is_spam'];
+ foreach (array_keys($_is_spam) as $key) {
+ $is_spam[$key] = TRUE;
+ if ($asap) break;
}
- //var_dump($method['quantity'], $is_spam);
-
- // Using invalid area
- if ((! $is_spam || ! $asap) && isset($method['area'])) {
- foreach($pickups as $pickup) {
- foreach ($pickup['area'] as $key => $value) {
- if ($key == 'offset') continue;
- $progress['area']['total'] += $value;
- $progress['area'][$key] += $value;
- if (isset($method['area']['total']) &&
- $progress['area']['total'] > $method['area']['total']) {
- $is_spam = TRUE;
- $progress['_action']['area']['total'] = TRUE;
- if ($is_spam && $asap) break;
- }
- if(isset($method['area'][$key]) &&
- $progress['area'][$key] > $method['area'][$key]) {
- $is_spam = TRUE;
- $progress['_action']['area'][$key] = TRUE;
- if ($is_spam && $asap) break;
- }
- }
- if ($is_spam && $asap) break;
+ if ($asap && $is_spam) break;
+
+ // Merge only
+ $blocked = array_merge_leaves($blocked, $_progress['blocked'], FALSE);
+ $hosts = array_merge_leaves($hosts, $_progress['hosts'], FALSE);
+ }
+
+ // Unique values
+ $blocked = array_unique_recursive($blocked);
+ $hosts = array_unique_recursive($hosts);
+
+ // Recount $sum['badhost']
+ $sum['badhost'] = array_count_leaves($blocked);
+
+ return $progress;
+ }
+
+ // ----------------------------------------
+ // Area measure
+
+ if (! $asap || ! $is_spam) {
+
+ // Method pickup
+ $_method = array();
+ foreach(array(
+ 'area_anchor', // There's HTML anchor tag
+ 'area_bbcode', // There's 'BBCode' linking tag
+ ) as $key) {
+ if (isset($method[$key])) $_method[$key] = TRUE;
+ }
+
+ if ($_method) {
+ $_asap = isset($method['asap']) ? array('asap' => TRUE) : array();
+ $_result = area_pickup($target, $_method + $_asap);
+ } else {
+ $_result = FALSE;
+ }
+
+ if ($_result) {
+ foreach(array_keys($_method) as $key) {
+ $sum[$key] = $_result[$key];
+ if (isset($method[$key]) && $sum[$key] > $method[$key]) {
+ $is_spam[$key] = TRUE;
}
}
- //var_dump($method['area'], $is_spam);
+ $_result = NULL;
+ }
+ }
- // URI uniqueness (and removing non-uniques)
- if ((! $is_spam || ! $asap) && isset($method['non_uniq'])) {
- $uris = array();
- foreach ($pickups as $key => $pickup) {
- $uris[$key] = uri_array_implode($pickup);
- }
- $count = count($uris);
- $uris = array_unique($uris);
- $progress['non_uniq'] += $count - count($uris);
- if ($progress['non_uniq'] > $method['non_uniq']) {
- $is_spam = TRUE;
- $progress['_action']['non_uniq'] = TRUE;
- }
- if (! $asap || ! $is_spam) {
- foreach (array_diff(array_keys($pickups),
- array_keys($uris)) as $remove) {
- unset($pickups[$remove]);
- }
+ // Return if ...
+ if ($asap && $is_spam) return $progress;
+
+ // ----------------------------------------
+ // URI: Pickup
+
+ $pickups = uri_pickup_normalize(spam_uri_pickup($target, $method));
+ $hosts = array();
+ foreach ($pickups as $key => $pickup) {
+ $hosts[$key] = & $pickup['host'];
+ }
+
+ // Return if ...
+ if (empty($pickups)) return $progress;
+
+ // ----------------------------------------
+ // URI: Bad host <pre-filter> (Separate good/bad hosts from $hosts)
+
+ if ((! $asap || ! $is_spam) && isset($method['badhost'])) {
+ $list = get_blocklist('pre');
+ $blocked = blocklist_distiller($hosts, array_keys($list), $asap);
+ foreach($list as $key=>$type){
+ if (! $type) unset($blocked[$key]); // Ignore goodhost etc
+ }
+ unset($list);
+ if (! empty($blocked)) $is_spam['badhost'] = TRUE;
+ }
+
+ // Return if ...
+ if ($asap && $is_spam) return $progress;
+
+ // Remove blocked from $pickups
+ foreach(array_keys($pickups) as $key) {
+ if (! isset($hosts[$key])) {
+ unset($pickups[$key]);
+ }
+ }
+
+ // ----------------------------------------
+ // URI: Check quantity
+
+ $sum['quantity'] += count($pickups);
+ // URI quantity
+ if ((! $asap || ! $is_spam) && isset($method['quantity']) &&
+ $sum['quantity'] > $method['quantity']) {
+ $is_spam['quantity'] = TRUE;
+ }
+
+ // ----------------------------------------
+ // URI: used inside HTML anchor tag pair
+
+ if ((! $asap || ! $is_spam) && isset($method['uri_anchor'])) {
+ $key = 'uri_anchor';
+ foreach($pickups as $pickup) {
+ if (isset($pickup['area'][$key])) {
+ $sum[$key] += $pickup['area'][$key];
+ if(isset($method[$key]) &&
+ $sum[$key] > $method[$key]) {
+ $is_spam[$key] = TRUE;
+ if ($asap && $is_spam) break;
}
- unset($uris);
+ if ($asap && $is_spam) break;
}
- //var_dump($method['non_uniq'], $is_spam);
+ }
+ }
- // Unique host
- $hosts = array();
- foreach ($pickups as $pickup) {
- $hosts[] = & $pickup['host'];
- }
- $hosts = array_unique($hosts);
- $progress['uniqhost'] += count($hosts);
- //var_dump($method['uniqhost'], $is_spam);
-
- // Bad host
- if ((! $is_spam || ! $asap) && isset($method['badhost'])) {
- $count = is_badhost($hosts, $asap);
- $progress['badhost'] += $count;
- if ($count !== 0) {
- $progress['_action']['badhost'] = TRUE;
- $is_spam = TRUE;
+ // ----------------------------------------
+ // URI: used inside 'BBCode' pair
+
+ if ((! $asap || ! $is_spam) && isset($method['uri_bbcode'])) {
+ $key = 'uri_bbcode';
+ foreach($pickups as $pickup) {
+ if (isset($pickup['area'][$key])) {
+ $sum[$key] += $pickup['area'][$key];
+ if(isset($method[$key]) &&
+ $sum[$key] > $method[$key]) {
+ $is_spam[$key] = TRUE;
+ if ($asap && $is_spam) break;
}
+ if ($asap && $is_spam) break;
+ }
+ }
+ }
+
+ // ----------------------------------------
+ // URI: Uniqueness (and removing non-uniques)
+
+ if ((! $asap || ! $is_spam) && isset($method['non_uniquri'])) {
+
+ $uris = array();
+ foreach (array_keys($pickups) as $key) {
+ $uris[$key] = uri_pickup_implode($pickups[$key]);
+ }
+ $count = count($uris);
+ $uris = array_unique($uris);
+ $sum['non_uniquri'] += $count - count($uris);
+ if ($sum['non_uniquri'] > $method['non_uniquri']) {
+ $is_spam['non_uniquri'] = TRUE;
+ }
+ if (! $asap || ! $is_spam) {
+ foreach (array_diff(array_keys($pickups),
+ array_keys($uris)) as $remove) {
+ unset($pickups[$remove]);
}
- //var_dump($method['badhost'], $is_spam);
}
+ unset($uris);
}
- return array($is_spam, $progress);
+ // Return if ...
+ if ($asap && $is_spam) return $progress;
+
+ // ----------------------------------------
+ // Host: Uniqueness (uniq / non-uniq)
+
+ $hosts = array_unique($hosts);
+
+ if (isset($sum['uniqhost'])) $sum['uniqhost'] += count($hosts);
+ if ((! $asap || ! $is_spam) && isset($method['non_uniqhost'])) {
+ $sum['non_uniqhost'] = $sum['quantity'] - $sum['uniqhost'];
+ if ($sum['non_uniqhost'] > $method['non_uniqhost']) {
+ $is_spam['non_uniqhost'] = TRUE;
+ }
+ }
+
+ // Return if ...
+ if ($asap && $is_spam) return $progress;
+
+ // ----------------------------------------
+ // URI: Bad host (Separate good/bad hosts from $hosts)
+
+ if ((! $asap || ! $is_spam) && isset($method['badhost'])) {
+ $list = get_blocklist('list');
+ $blocked = array_merge_leaves(
+ $blocked,
+ blocklist_distiller($hosts, array_keys($list), $asap),
+ FALSE
+ );
+ foreach($list as $key=>$type){
+ if (! $type) unset($blocked[$key]); // Ignore goodhost etc
+ }
+ unset($list);
+ if (! empty($blocked)) $is_spam['badhost'] = TRUE;
+ }
+
+ // Return if ...
+ //if ($asap && $is_spam) return $progress;
+
+ // ----------------------------------------
+ // End
+
+ return $progress;
}
// ---------------------
// Reporting
-// TODO: Show all
// Summarize $progress (blocked only)
-function summarize_check_uri_spam_progress($progress = array(), $shownum = TRUE)
+function summarize_spam_progress($progress = array(), $blockedonly = FALSE)
{
- //$list = check_uri_spam_method();
+ if ($blockedonly) {
+ $tmp = array_keys($progress['is_spam']);
+ } else {
+ $tmp = array();
+ $method = & $progress['method'];
+ if (isset($progress['sum'])) {
+ foreach ($progress['sum'] as $key => $value) {
+ if (isset($method[$key]) && $value) {
+ $tmp[] = $key . '(' . $value . ')';
+ }
+ }
+ }
+ }
- $tmp = array();
- foreach (array_keys($progress['_action']) as $_action) {
- if (is_array($progress['_action'][$_action])) {
- foreach (array_keys($progress['_action'][$_action]) as $_area) {
- $tmp[] = $_action . '=>' . $_area .
- ($shownum ? '(' . $progress[$_action][$_area] . ')' : '');
+ return implode(', ', $tmp);
+}
+
+function summarize_detail_badhost($progress = array())
+{
+ if (! isset($progress['blocked']) || empty($progress['blocked'])) return '';
+
+ // Flat per group
+ $blocked = array();
+ foreach($progress['blocked'] as $list => $lvalue) {
+ foreach($lvalue as $group => $gvalue) {
+ $flat = implode(', ', array_flat_leaves($gvalue));
+ if ($flat === $group) {
+ $blocked[$list][] = $flat;
+ } else {
+ $blocked[$list][$group] = $flat;
}
+ }
+ }
+
+ // Shrink per list
+ // From: 'A-1' => array('ie.to')
+ // To: 'A-1' => 'ie.to'
+ foreach($blocked as $list => $lvalue) {
+ if (is_array($lvalue) &&
+ count($lvalue) == 1 &&
+ is_numeric(key($lvalue))) {
+ $blocked[$list] = current($lvalue);
+ }
+ }
+
+ return var_export_shrink($blocked, TRUE, TRUE);
+}
+
+function summarize_detail_newtral($progress = array())
+{
+ if (! isset($progress['hosts']) ||
+ ! is_array($progress['hosts']) ||
+ empty($progress['hosts'])) return '';
+
+ // Generate a responsible $trie
+ $trie = array();
+ foreach($progress['hosts'] as $value) {
+ // 'A.foo.bar.example.com'
+ $resp = whois_responsibility($value); // 'example.com'
+ if (empty($resp)) {
+ // One or more test, or do nothing here
+ $resp = strval($value);
+ $rest = '';
} else {
- $tmp[] = $_action .
- ($shownum ? '(' . $progress[$_action] . ')' : '');
+ $rest = rtrim(substr($value, 0, - strlen($resp)), '.'); // 'A.foo.bar'
}
+ $trie = array_merge_leaves($trie, array($resp => array($rest => NULL)), FALSE);
}
- return implode(', ', $tmp);
+ // Format: var_export_shrink() -like output
+ $result = array();
+ ksort_by_domain($trie);
+ foreach(array_keys($trie) as $key) {
+ ksort_by_domain($trie[$key]);
+ if (count($trie[$key]) == 1 && key($trie[$key]) == '') {
+ // Just one 'responsibility.example.com'
+ $result[] = ' \'' . $key . '\',';
+ } else {
+ // One subdomain-or-host, or several ones
+ $subs = array();
+ foreach(array_keys($trie[$key]) as $sub) {
+ if ($sub == '') {
+ $subs[] = $key; // 'example.com'
+ } else {
+ $subs[] = $sub . '. '; // 'A.foo.bar. '
+ }
+ }
+ $result[] = ' \'' . $key . '\' => \'' . implode(', ', $subs) . '\',';
+ }
+ unset($trie[$key]);
+ }
+ return
+ 'array (' . "\n" .
+ implode("\n", $result) . "\n" .
+ ')';
+}
+
+
+// Check responsibility-root of the FQDN
+// 'foo.bar.example.com' => 'example.com' (.com has the last whois for it)
+// 'foo.bar.example.au' => 'example.au' (.au has the last whois for it)
+// 'foo.bar.example.edu.au' => 'example.edu.au' (.edu.au has the last whois for it)
+// 'foo.bar.example.act.edu.au' => 'example.act.edu.au' (.act.edu.au has the last whois for it)
+function whois_responsibility($fqdn = 'foo.bar.example.com', $parent = FALSE, $implicit = TRUE)
+{
+ static $domain;
+
+ if ($fqdn === NULL) {
+ $domain = NULL; // Unset
+ return '';
+ }
+ if (! is_string($fqdn)) return '';
+
+ if (is_ip($fqdn)) return $fqdn;
+
+ if (! isset($domain)) {
+ $domain = array();
+ if (file_exists(DOMAIN_INI_FILE)) {
+ include(DOMAIN_INI_FILE); // Set
+ }
+ }
+
+ $result = array();
+ $dcursor = & $domain;
+ $array = array_reverse(explode('.', $fqdn));
+ $i = 0;
+ while(TRUE) {
+ if (! isset($array[$i])) break;
+ $acursor = $array[$i];
+ if (is_array($dcursor) && isset($dcursor[$acursor])) {
+ $result[] = & $array[$i];
+ $dcursor = & $dcursor[$acursor];
+ } else {
+ if (! $parent && isset($acursor)) {
+ $result[] = & $array[$i]; // Whois servers must know this subdomain
+ }
+ break;
+ }
+ ++$i;
+ }
+
+ // Implicit responsibility: Top-Level-Domains must not be yours
+ // 'bar.foo.something' => 'foo.something'
+ if ($implicit && count($result) == 1 && count($array) > 1) {
+ $result[] = & $array[1];
+ }
+
+ return $result ? implode('.', array_reverse($result)) : '';
}
+
// ---------------------
// Exit
+// Freeing memories
+function spam_dispose()
+{
+ get_blocklist(NULL);
+ whois_responsibility(NULL);
+}
+
// Common bahavior for blocking
// NOTE: Call this function from various blocking feature, to disgueise the reason 'why blocked'
-function spam_exit()
+function spam_exit($mode = '', $data = array())
{
- die("\n");
+ $exit = TRUE;
+
+ switch ($mode) {
+ case '':
+ echo("\n");
+ break;
+ case 'dump':
+ echo('<pre>' . "\n");
+ echo htmlspecialchars(var_export($data, TRUE));
+ echo('</pre>' . "\n");
+ break;
+ };
+
+ if ($exit) exit; // Force exit
}
// ---------------------
-//
+// Simple filtering
+// TODO: Record them
// Simple/fast spam filter ($target: 'a string' or an array())
-function pkwk_spamfilter($action, $page, $target = array('title' => ''), $method = array(), $asap = FALSE)
+function pkwk_spamfilter($action, $page, $target = array('title' => ''), $method = array(), $exitmode = '')
{
- global $notify;
+ $progress = check_uri_spam($target, $method);
- list($is_spam, $progress) = check_uri_spam($target, $method, $asap);
+ if (empty($progress['is_spam'])) {
+ spam_dispose();
+ } else {
- // Mail to administrator(s)
- if ($is_spam) {
- if ($notify) {
- pkwk_spamnotify($action, $page, $target, $progress);
- }
- spam_exit();
+// TODO: detect encoding from $target for mbstring functions
+// $tmp = array();
+// foreach(array_keys($target) as $key) {
+// $tmp[strings($key, 0, FALSE, TRUE)] = strings($target[$key], 0, FALSE, TRUE); // Removing "\0" etc
+// }
+// $target = & $tmp;
+
+ pkwk_spamnotify($action, $page, $target, $progress, $method);
+ spam_exit($exitmode, $progress);
}
}
// PukiWiki original
// Mail to administrator(s)
-function pkwk_spamnotify($action, $page, $target = array('title' => ''), $progress = array())
+function pkwk_spamnotify($action, $page, $target = array('title' => ''), $progress = array(), $method = array())
{
- global $notify_subject;
-
- $footer['BLOCKED'] = 'Blocked by: ' .
- summarize_check_uri_spam_progress($progress);
- $footer['ACTION'] = 'Blocked: ' . $action;
- $footer['PAGE'] = '[blocked] ' . $page;
- $footer['URI'] = get_script_uri() . '?' . rawurlencode($page);
- $footer['USER_AGENT'] = TRUE;
- $footer['REMOTE_ADDR'] = TRUE;
- pkwk_mail_notify($notify_subject, var_export($target, TRUE), $footer);
+ global $notify, $notify_subject;
+
+ if (! $notify) return;
+
+ $asap = isset($method['asap']);
+
+ $summary['ACTION'] = 'Blocked by: ' . summarize_spam_progress($progress, TRUE);
+ if (! $asap) {
+ $summary['METRICS'] = summarize_spam_progress($progress);
+ }
+
+ $tmp = summarize_detail_badhost($progress);
+ if ($tmp != '') $summary['DETAIL_BADHOST'] = $tmp;
+
+ $tmp = summarize_detail_newtral($progress);
+ if (! $asap && $tmp != '') $summary['DETAIL_NEUTRAL_HOST'] = $tmp;
+
+ $summary['COMMENT'] = $action;
+ $summary['PAGE'] = '[blocked] ' . (is_pagename($page) ? $page : '');
+ $summary['URI'] = get_script_uri() . '?' . rawurlencode($page);
+ $summary['USER_AGENT'] = TRUE;
+ $summary['REMOTE_ADDR'] = TRUE;
+ pkwk_mail_notify($notify_subject, var_export($target, TRUE), $summary, TRUE);
}
?>
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