<?php
-// $Id: spam.php,v 1.64 2006/12/10 04:01:43 henoheno Exp $
+// $Id: spam.php,v 1.76 2006/12/16 12:53:27 henoheno Exp $
// Copyright (C) 2006 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()
if (! defined('SPAM_INI_FILE')) define('SPAM_INI_FILE', 'spam.ini.php');
'#i',
$string, $array, PREG_SET_ORDER | PREG_OFFSET_CAPTURE
);
- //var_dump(recursive_map('htmlspecialchars', $array));
// Shrink $array
static $parts = array(
if ($normalize) {
$_uri['scheme'] = scheme_normalize($_uri['scheme']);
if ($_uri['scheme'] === '') {
- unset ($array[$uri]);
+ unset($array[$uri]);
continue;
}
$_uri['host'] = strtolower($_uri['host']);
function area_pickup($string = '', $method = array())
{
$area = array();
+ if (empty($method)) return $area;
- // Anchor tags by preg_match_all()
- // [OK] <a href=></a>
+ // Anchor tag pair by preg_match and preg_match_all()
+ // [OK] <a href></a>
// [OK] <a href= >Good site!</a>
// [OK] <a href= "#" >test</a>
// [OK] <a href="http://nasty.example.com">visit http://nasty.example.com/</a>
// [OK] <a href=\'http://nasty.example.com/\' >discount foobar</a>
// [NG] <a href="http://ng.example.com">visit http://ng.example.com _not_ended_
- if (isset($method['anchor'])) {
+ $regex = '#<a\b[^>]*\bhref\b[^>]*>.*?</a\b[^>]*(>)#i';
+ if (isset($method['area_anchor'])) {
$areas = array();
- preg_match_all('#<a\b[^>]*\bhref\b[^>]*>.*?</a\b[^>]*(>)#i',
- $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- //var_dump(recursive_map('htmlspecialchars', $areas));
+ $count = isset($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['anchor'] = $areas;
+ if (! empty($areas)) $area['uri_anchor'] = $areas;
}
- // phpBB's "BBCode" by preg_match_all()
+ // phpBB's "BBCode" pair by preg_match and preg_match_all()
// [OK] [url][/url]
// [OK] [url]http://nasty.example.com/[/url]
// [OK] [link]http://nasty.example.com/[/link]
// [OK] [url=http://nasty.example.com]visit http://nasty.example.com/[/url]
// [OK] [link http://nasty.example.com/]buy something[/link]
- if (isset($method['bbcode'])) {
+ $regex = '#\[(url|link)\b[^\]]*\].*?\[/\1\b[^\]]*(\])#i';
+ 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('#\[(url|link)\b[^\]]*\].*?\[/\1\b[^\]]*(\])#i',
- $string, $areas, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
- //var_dump(recursive_map('htmlspecialchars', $areas));
+ preg_match_all($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['bbcode'] = $areas;
+ if (! empty($areas)) $area['uri_bbcode'] = $areas;
}
// Various Wiki syntax
}
// Main function of spam-uri pickup
-function spam_uri_pickup($string = '', $area = array())
+function spam_uri_pickup($string = '', $method = array())
{
- if (! is_array($area) || empty($area)) {
- $area = array(
- 'anchor' => TRUE,
- 'bbcode' => TRUE,
- );
+ if (! is_array($method) || empty($method)) {
+ $method = check_uri_spam_method();
}
$string = spam_uri_pickup_preprocess($string);
$array = uri_pickup($string);
- // Area elevation for '(especially external)link' intension
+ // Area elevation of URIs, for '(especially external)link' intension
if (! empty($array)) {
- $areas = area_pickup($string, $area);
+ $_method = array();
+ if (isset($method['uri_anchor'])) $_method['uri_anchor'] = & $method['uri_anchor'];
+ if (isset($method['uri_bbcode'])) $_method['uri_bbcode'] = & $method['uri_bbcode'];
+ $areas = area_pickup($string, $_method, TRUE);
if (! empty($areas)) {
$area_shadow = array();
- foreach(array_keys($array) as $key){
+ foreach (array_keys($array) as $key) {
$area_shadow[$key] = & $array[$key]['area'];
- $area_shadow[$key]['anchor'] = 0;
- $area_shadow[$key]['bbcode'] = 0;
- }
- if (isset($areas['anchor'])) {
- area_measure($areas['anchor'], $area_shadow, 1, 'anchor');
+ foreach (array_keys($_method) as $_key) {
+ $area_shadow[$key][$_key] = 0;
+ }
}
- if (isset($areas['bbcode'])) {
- area_measure($areas['bbcode'], $area_shadow, 1, 'bbcode');
+ foreach (array_keys($_method) as $_key) {
+ if (isset($areas[$_key])) {
+ area_measure($areas[$_key], $area_shadow, 1, $_key);
+ }
}
}
}
//'10.20.*.*', // 10.20.example.com also matches
//'*.blogspot.com', // Blog services subdomains
//array('blogspot.com', '*.blogspot.com')
+
+ // Viral/Buzz marketers' site, try to make people
+ // as commercial Wiki spammers
+ // http://pukiwiki.sourceforge.jp/image/2006-12-16_wikiviral_pressblog.gif
+ array('pressblog.jp', '*.pressblog.jp'),
);
foreach ($blocklist['badhost'] as $part) {
- $regex['badhost'][$part] = '/^' . generate_glob_regex($part) . '$/i';
+ $_part = is_array($part) ? implode(', ', $part) : $part;
+ $regex['badhost'][$_part] = '/^' . generate_glob_regex($part) . '$/i';
}
+ var_dump($regex);
}
// Load
$blocklist = array();
require(SPAM_INI_FILE);
foreach ($blocklist['badhost'] as $part) {
- $regex['badhost'][$part] = '/^' . generate_glob_regex($part) . '$/i';
+ $_part = is_array($part) ? implode(', ', $part) : $part;
+ $regex['badhost'][$_part] = '/^' . generate_glob_regex($part) . '$/i';
}
}
}
$times = intval($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_uniq' => 3 * $times, // Allow N duped (and normalized) URIs
- // 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
+ // 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
);
-
- // Rules
- $rules = array(
- 'asap' => FALSE, // Quit As Soon As Possible
- 'uniqhost' => TRUE, // Show uniq host (at block notification mail)
- 'badhost' => TRUE, // Check badhost
- );
-
- // Remove unused
- foreach (array_keys($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: Simplify $progress data structure
-// TODO: Simplify. !empty(['is_spam']) just means $is_spam
// Simple/fast spam check
function check_uri_spam($target = '', $method = array())
{
- $is_spam = FALSE;
if (! is_array($method) || empty($method)) {
$method = check_uri_spam_method();
}
- $asap = isset($method['asap']) ? $method['asap'] : TRUE;
-
$progress = array(
- 'sum' => array(
+ 'sum' => array(
'quantity' => 0,
'uniqhost' => 0,
'non_uniq' => 0,
'badhost' => 0,
- 'area_total' => 0,
'area_anchor' => 0,
'area_bbcode' => 0,
- ),
+ 'uri_anchor' => 0,
+ 'uri_bbcode' => 0,
+ ),
'is_spam' => array(),
- 'method' => & $method,
+ 'method' => & $method,
);
+ $sum = & $progress['sum'];
+ $is_spam = & $progress['is_spam'];
+ $asap = isset($method['asap']);
-
+ // Return if ...
if (is_array($target)) {
- // Recurse
foreach($target as $str) {
- list($_is_spam, $_progress) = check_uri_spam($str, $method);
- $is_spam = $is_spam || $_is_spam;
+ // Recurse
+ $_progress = check_uri_spam($str, $method);
foreach (array_keys($_progress['sum']) as $key) {
- $progress['sum'][$key] += $_progress['sum'][$key];
+ $sum[$key] += $_progress['sum'][$key];
}
foreach(array_keys($_progress['is_spam']) as $key) {
- $progress['is_spam'][$key] = TRUE;
+ $is_spam[$key] = TRUE;
}
- if ($is_spam && $asap) break;
+ if ($asap && $is_spam) break;
}
- } else {
- $pickups = spam_uri_pickup($target);
- if (! empty($pickups)) {
- $progress['sum']['quantity'] += count($pickups);
-
- // URI quantity
- if ((! $is_spam || ! $asap) && isset($method['quantity']) &&
- $progress['sum']['quantity'] > $method['quantity']) {
- $is_spam = TRUE;
- $progress['is_spam']['quantity'] = TRUE;
- }
- //var_dump($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;
- $p_key = 'area_' . $key;
- $progress['sum']['area_total'] += $value;
- $progress['sum'][$p_key] += $value;
- if (isset($method['area']['total']) &&
- $progress['sum']['area_total'] > $method['area']['total']) {
- $is_spam = TRUE;
- $progress['is_spam']['area_total'] = TRUE;
- if ($is_spam && $asap) break;
- }
- if(isset($method['area'][$key]) &&
- $progress['sum'][$p_key] > $method['area'][$key]) {
- $is_spam = TRUE;
- $progress['is_spam'][$p_key] = TRUE;
- if ($is_spam && $asap) break;
- }
- }
- if ($is_spam && $asap) break;
- }
- }
- //var_dump($method['area'], $is_spam);
+ return $progress;
+ }
+ // Area: There's HTML anchor tag
+ if ((! $asap || ! $is_spam) && isset($method['area_anchor'])) {
+ $key = 'area_anchor';
+ $_asap = isset($method['asap']) ? array('asap' => TRUE) : array();
+ $result = area_pickup($target, array($key => TRUE) + $_asap);
+ if ($result) {
+ $sum[$key] += $result[$key];
+ $is_spam[$key] = TRUE;
+ }
+ }
- // URI uniqueness (and removing non-uniques)
- if ((! $is_spam || ! $asap) && isset($method['non_uniq'])) {
+ // Area: There's 'BBCode' linking tag
+ if ((! $asap || ! $is_spam) && isset($method['area_bbcode'])) {
+ $key = 'area_bbcode';
+ $_asap = isset($method['asap']) ? array('asap' => TRUE) : array();
+ $result = area_pickup($target, array($key => TRUE) + $_asap);
+ if ($result) {
+ $sum[$key] += $result[$key];
+ $is_spam[$key] = TRUE;
+ }
+ }
- // Destructive normalize of URIs
- uri_array_normalize($pickups);
+ // Return if ...
+ if ($asap && $is_spam) {
+ return $progress;
+ }
+ // URI Init
+ $pickups = spam_uri_pickup($target, $method);
+ if (empty($pickups)) {
+ return $progress;
+ }
- $uris = array();
- foreach (array_keys($pickups) as $key) {
- $uris[$key] = uri_array_implode($pickups[$key]);
- }
- $count = count($uris);
- $uris = array_unique($uris);
- $progress['sum']['non_uniq'] += $count - count($uris);
- if ($progress['sum']['non_uniq'] > $method['non_uniq']) {
- $is_spam = TRUE;
- $progress['is_spam']['non_uniq'] = TRUE;
- }
- if (! $asap || ! $is_spam) {
- foreach (array_diff(array_keys($pickups),
- array_keys($uris)) as $remove) {
- unset($pickups[$remove]);
- }
+ // 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);
- $progress['sum']['uniqhost'] += count($hosts);
- //var_dump($method['uniqhost'], $is_spam);
-
- // Bad host
- if ((! $is_spam || ! $asap) && isset($method['badhost'])) {
- $count = array_count_leaves(is_badhost($hosts, $asap));
- $progress['sum']['badhost'] += $count;
- if ($count !== 0) {
- $progress['is_spam']['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_uniq'])) {
+
+ // Destructive normalize of URIs
+ uri_array_normalize($pickups);
+
+ $uris = array();
+ foreach (array_keys($pickups) as $key) {
+ $uris[$key] = uri_array_implode($pickups[$key]);
+ }
+ $count = count($uris);
+ $uris = array_unique($uris);
+ $sum['non_uniq'] += $count - count($uris);
+ if ($sum['non_uniq'] > $method['non_uniq']) {
+ $is_spam['non_uniq'] = 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 if ...
+ if ($asap && $is_spam) {
+ return $progress;
}
- return array($is_spam, $progress);
+ // URI: Unique host
+ $hosts = array();
+ foreach ($pickups as $pickup) $hosts[] = & $pickup['host'];
+ $hosts = array_unique($hosts);
+ $sum['uniqhost'] += count($hosts);
+
+ // URI: Bad host
+ if ((! $asap || ! $is_spam) && isset($method['badhost'])) {
+ $count = array_count_leaves(is_badhost($hosts, $asap));
+ $sum['badhost'] += $count;
+ if ($count != 0) $is_spam['badhost'] = TRUE;
+ }
+
+ return $progress;
}
// Count leaves
// Summarize $progress (blocked only)
function summarize_spam_progress($progress = array(), $blockedonly = FALSE)
{
- $method = $progress['method'];
- if (isset($method['area'])) {
- foreach(array_keys($method['area']) as $key) {
- $method['area_' . $key] = TRUE;
- }
- }
-
if ($blockedonly) {
$tmp = array_keys($progress['is_spam']);
} else {
$tmp = array();
- foreach ($progress['sum'] as $key => $value) {
- if (isset($method[$key])) {
- $tmp[] = $key . '(' . $value . ')';
+ $method = & $progress['method'];
+ if (isset($progress['sum'])) {
+ foreach ($progress['sum'] as $key => $value) {
+ if (isset($method[$key])) {
+ $tmp[] = $key . '(' . $value . ')';
+ }
}
}
}
{
global $notify;
- list($is_spam, $progress) = check_uri_spam($target, $method);
+ $progress = check_uri_spam($target, $method);
- if ($is_spam) {
+ if (! empty($progress['is_spam'])) {
// Mail to administrator(s)
if ($notify) pkwk_spamnotify($action, $page, $target, $progress, $method);
// End
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