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Update HTMLPurifier

This commit is contained in:
Eric Lippmann 2018-06-25 16:04:10 +02:00
parent e55ac3e4a2
commit 46907735fe
37 changed files with 655 additions and 164 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
library/vendor/HTMLPurifier.autoload.php vendored
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@ -14,10 +14,7 @@ if (function_exists('spl_autoload_register') && function_exists('spl_autoload_un
spl_autoload_register('__autoload');
}
} elseif (!function_exists('__autoload')) {
function __autoload($class)
{
return HTMLPurifier_Bootstrap::autoload($class);
}
require dirname(__FILE__) . '/HTMLPurifier.autoload-legacy.php';
}
if (ini_get('zend.ze1_compatibility_mode')) {

6
library/vendor/HTMLPurifier.php vendored
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@ -19,7 +19,7 @@
*/
/*
HTML Purifier 4.8.0 - Standards Compliant HTML Filtering
HTML Purifier 4.10.0 - Standards Compliant HTML Filtering
Copyright (C) 2006-2008 Edward Z. Yang
This library is free software; you can redistribute it and/or
@ -58,12 +58,12 @@ class HTMLPurifier
* Version of HTML Purifier.
* @type string
*/
public $version = '4.8.0';
public $version = '4.10.0';
/**
* Constant with version of HTML Purifier.
*/
const VERSION = '4.8.0';
const VERSION = '4.10.0';
/**
* Global configuration object.

6
library/vendor/HTMLPurifier/Arborize.php vendored
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@ -19,8 +19,8 @@ class HTMLPurifier_Arborize
if ($token instanceof HTMLPurifier_Token_End) {
$token->start = null; // [MUT]
$r = array_pop($stack);
assert($r->name === $token->name);
assert(empty($token->attr));
//assert($r->name === $token->name);
//assert(empty($token->attr));
$r->endCol = $token->col;
$r->endLine = $token->line;
$r->endArmor = $token->armor;
@ -32,7 +32,7 @@ class HTMLPurifier_Arborize
$stack[] = $node;
}
}
assert(count($stack) == 1);
//assert(count($stack) == 1);
return $stack[0];
}

8
library/vendor/HTMLPurifier/AttrDef.php vendored
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@ -86,7 +86,13 @@ abstract class HTMLPurifier_AttrDef
*/
protected function mungeRgb($string)
{
return preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);
$p = '\s*(\d+(\.\d+)?([%]?))\s*';
if (preg_match('/(rgba|hsla)\(/', $string)) {
return preg_replace('/(rgba|hsla)\('.$p.','.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8,\11)', $string);
}
return preg_replace('/(rgb|hsl)\('.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8)', $string);
}
/**

37
library/vendor/HTMLPurifier/AttrDef/CSS.php vendored
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@ -27,13 +27,38 @@ class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
$definition = $config->getCSSDefinition();
$allow_duplicates = $config->get("CSS.AllowDuplicates");
// we're going to break the spec and explode by semicolons.
// This is because semicolon rarely appears in escaped form
// Doing this is generally flaky but fast
// IT MIGHT APPEAR IN URIs, see HTMLPurifier_AttrDef_CSSURI
// for details
$declarations = explode(';', $css);
// According to the CSS2.1 spec, the places where a
// non-delimiting semicolon can appear are in strings
// escape sequences. So here is some dumb hack to
// handle quotes.
$len = strlen($css);
$accum = "";
$declarations = array();
$quoted = false;
for ($i = 0; $i < $len; $i++) {
$c = strcspn($css, ";'\"", $i);
$accum .= substr($css, $i, $c);
$i += $c;
if ($i == $len) break;
$d = $css[$i];
if ($quoted) {
$accum .= $d;
if ($d == $quoted) {
$quoted = false;
}
} else {
if ($d == ";") {
$declarations[] = $accum;
$accum = "";
} else {
$accum .= $d;
$quoted = $d;
}
}
}
if ($accum != "") $declarations[] = $accum;
$propvalues = array();
$new_declarations = '';

128
library/vendor/HTMLPurifier/AttrDef/CSS/Color.php vendored
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@ -6,6 +6,16 @@
class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_AttrDef_CSS_AlphaValue
*/
protected $alpha;
public function __construct()
{
$this->alpha = new HTMLPurifier_AttrDef_CSS_AlphaValue();
}
/**
* @param string $color
* @param HTMLPurifier_Config $config
@ -29,59 +39,104 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
return $colors[$lower];
}
if (strpos($color, 'rgb(') !== false) {
// rgb literal handling
if (preg_match('#(rgb|rgba|hsl|hsla)\(#', $color, $matches) === 1) {
$length = strlen($color);
if (strpos($color, ')') !== $length - 1) {
return false;
}
$triad = substr($color, 4, $length - 4 - 1);
$parts = explode(',', $triad);
if (count($parts) !== 3) {
// get used function : rgb, rgba, hsl or hsla
$function = $matches[1];
$parameters_size = 3;
$alpha_channel = false;
if (substr($function, -1) === 'a') {
$parameters_size = 4;
$alpha_channel = true;
}
/*
* Allowed types for values :
* parameter_position => [type => max_value]
*/
$allowed_types = array(
1 => array('percentage' => 100, 'integer' => 255),
2 => array('percentage' => 100, 'integer' => 255),
3 => array('percentage' => 100, 'integer' => 255),
);
$allow_different_types = false;
if (strpos($function, 'hsl') !== false) {
$allowed_types = array(
1 => array('integer' => 360),
2 => array('percentage' => 100),
3 => array('percentage' => 100),
);
$allow_different_types = true;
}
$values = trim(str_replace($function, '', $color), ' ()');
$parts = explode(',', $values);
if (count($parts) !== $parameters_size) {
return false;
}
$type = false; // to ensure that they're all the same type
$type = false;
$new_parts = array();
$i = 0;
foreach ($parts as $part) {
$i++;
$part = trim($part);
if ($part === '') {
return false;
}
$length = strlen($part);
if ($part[$length - 1] === '%') {
// handle percents
if (!$type) {
$type = 'percentage';
} elseif ($type !== 'percentage') {
// different check for alpha channel
if ($alpha_channel === true && $i === count($parts)) {
$result = $this->alpha->validate($part, $config, $context);
if ($result === false) {
return false;
}
$num = (float)substr($part, 0, $length - 1);
if ($num < 0) {
$num = 0;
}
if ($num > 100) {
$num = 100;
}
$new_parts[] = "$num%";
$new_parts[] = (string)$result;
continue;
}
if (substr($part, -1) === '%') {
$current_type = 'percentage';
} else {
// handle integers
if (!$type) {
$type = 'integer';
} elseif ($type !== 'integer') {
return false;
}
$num = (int)$part;
if ($num < 0) {
$num = 0;
}
if ($num > 255) {
$num = 255;
}
$new_parts[] = (string)$num;
$current_type = 'integer';
}
if (!array_key_exists($current_type, $allowed_types[$i])) {
return false;
}
if (!$type) {
$type = $current_type;
}
if ($allow_different_types === false && $type != $current_type) {
return false;
}
$max_value = $allowed_types[$i][$current_type];
if ($current_type == 'integer') {
// Return value between range 0 -> $max_value
$new_parts[] = (int)max(min($part, $max_value), 0);
} elseif ($current_type == 'percentage') {
$new_parts[] = (float)max(min(rtrim($part, '%'), $max_value), 0) . '%';
}
}
$new_triad = implode(',', $new_parts);
$color = "rgb($new_triad)";
$new_values = implode(',', $new_parts);
$color = $function . '(' . $new_values . ')';
} else {
// hexadecimal handling
if ($color[0] === '#') {
@ -100,6 +155,7 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
}
return $color;
}
}
// vim: et sw=4 sts=4

9
library/vendor/HTMLPurifier/AttrDef/URI/Host.php vendored
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@ -97,7 +97,7 @@ class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
// PHP 5.3 and later support this functionality natively
if (function_exists('idn_to_ascii')) {
return idn_to_ascii($string);
$string = idn_to_ascii($string, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
// If we have Net_IDNA2 support, we can support IRIs by
// punycoding them. (This is the most portable thing to do,
@ -123,13 +123,14 @@ class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
}
}
$string = implode('.', $new_parts);
if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
return $string;
}
} catch (Exception $e) {
// XXX error reporting
}
}
// Try again
if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
return $string;
}
return false;
}
}

37
library/vendor/HTMLPurifier/AttrTransform/TargetNoopener.php vendored Normal file
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@ -0,0 +1,37 @@
<?php
// must be called POST validation
/**
* Adds rel="noopener" to any links which target a different window
* than the current one. This is used to prevent malicious websites
* from silently replacing the original window, which could be used
* to do phishing.
* This transform is controlled by %HTML.TargetNoopener.
*/
class HTMLPurifier_AttrTransform_TargetNoopener extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (isset($attr['rel'])) {
$rels = explode(' ', $attr['rel']);
} else {
$rels = array();
}
if (isset($attr['target']) && !in_array('noopener', $rels)) {
$rels[] = 'noopener';
}
if (!empty($rels) || isset($attr['rel'])) {
$attr['rel'] = implode(' ', $rels);
}
return $attr;
}
}

4
library/vendor/HTMLPurifier/CSSDefinition.php vendored
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@ -225,6 +225,10 @@ class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
);
$max = $config->get('CSS.MaxImgLength');
$this->info['min-width'] =
$this->info['max-width'] =
$this->info['min-height'] =
$this->info['max-height'] =
$this->info['width'] =
$this->info['height'] =
$max === null ?

4
library/vendor/HTMLPurifier/ChildDef/List.php vendored
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@ -50,7 +50,7 @@ class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
// a little sanity check to make sure it's not ALL whitespace
$all_whitespace = true;
$current_li = false;
$current_li = null;
foreach ($children as $node) {
if (!empty($node->is_whitespace)) {
@ -71,7 +71,7 @@ class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
// to handle non-list elements; non-list elements should
// not be appended to an existing li; only li created
// for non-list. This distinction is not currently made.
if ($current_li === false) {
if ($current_li === null) {
$current_li = new HTMLPurifier_Node_Element('li');
$result[] = $current_li;
}

2
library/vendor/HTMLPurifier/ChildDef/Table.php vendored
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@ -203,7 +203,7 @@ class HTMLPurifier_ChildDef_Table extends HTMLPurifier_ChildDef
$current_tr_tbody->children[] = $node;
break;
case '#PCDATA':
assert($node->is_whitespace);
//assert($node->is_whitespace);
if ($current_tr_tbody === null) {
$ret[] = $node;
} else {

4
library/vendor/HTMLPurifier/Config.php vendored
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@ -21,7 +21,7 @@ class HTMLPurifier_Config
* HTML Purifier's version
* @type string
*/
public $version = '4.8.0';
public $version = '4.10.0';
/**
* Whether or not to automatically finalize
@ -333,7 +333,7 @@ class HTMLPurifier_Config
}
// Raw type might be negative when using the fully optimized form
// of stdclass, which indicates allow_null == true
// of stdClass, which indicates allow_null == true
$rtype = is_int($def) ? $def : $def->type;
if ($rtype < 0) {
$type = -$rtype;

14
library/vendor/HTMLPurifier/ConfigSchema.php vendored
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@ -24,11 +24,11 @@ class HTMLPurifier_ConfigSchema
*
* array(
* 'Namespace' => array(
* 'Directive' => new stdclass(),
* 'Directive' => new stdClass(),
* )
* )
*
* The stdclass may have the following properties:
* The stdClass may have the following properties:
*
* - If isAlias isn't set:
* - type: Integer type of directive, see HTMLPurifier_VarParser for definitions
@ -39,8 +39,8 @@ class HTMLPurifier_ConfigSchema
* - namespace: Namespace this directive aliases to
* - name: Directive name this directive aliases to
*
* In certain degenerate cases, stdclass will actually be an integer. In
* that case, the value is equivalent to an stdclass with the type
* In certain degenerate cases, stdClass will actually be an integer. In
* that case, the value is equivalent to an stdClass with the type
* property set to the integer. If the integer is negative, type is
* equal to the absolute value of integer, and allow_null is true.
*
@ -105,7 +105,7 @@ class HTMLPurifier_ConfigSchema
*/
public function add($key, $default, $type, $allow_null)
{
$obj = new stdclass();
$obj = new stdClass();
$obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
if ($allow_null) {
$obj->allow_null = true;
@ -152,14 +152,14 @@ class HTMLPurifier_ConfigSchema
*/
public function addAlias($key, $new_key)
{
$obj = new stdclass;
$obj = new stdClass;
$obj->key = $new_key;
$obj->isAlias = true;
$this->info[$key] = $obj;
}
/**
* Replaces any stdclass that only has the type property with type integer.
* Replaces any stdClass that only has the type property with type integer.
*/
public function postProcess()
{

BIN
library/vendor/HTMLPurifier/ConfigSchema/schema.ser vendored
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Binary file not shown.

16
library/vendor/HTMLPurifier/ConfigSchema/schema/Core.AggressivelyRemoveScript.txt vendored Normal file
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@ -0,0 +1,16 @@
Core.AggressivelyRemoveScript
TYPE: bool
VERSION: 4.9.0
DEFAULT: true
--DESCRIPTION--
<p>
This directive enables aggressive pre-filter removal of
script tags. This is not necessary for security,
but it can help work around a bug in libxml where embedded
HTML elements inside script sections cause the parser to
choke. To revert to pre-4.9.0 behavior, set this to false.
This directive has no effect if %Core.Trusted is true,
%Core.RemoveScriptContents is false, or %Core.HiddenElements
does not contain script.
</p>
--# vim: et sw=4 sts=4

36
library/vendor/HTMLPurifier/ConfigSchema/schema/Core.LegacyEntityDecoder.txt vendored Normal file
View File

@ -0,0 +1,36 @@
Core.LegacyEntityDecoder
TYPE: bool
VERSION: 4.9.0
DEFAULT: false
--DESCRIPTION--
<p>
Prior to HTML Purifier 4.9.0, entities were decoded by performing
a global search replace for all entities whose decoded versions
did not have special meanings under HTML, and replaced them with
their decoded versions. We would match all entities, even if they did
not have a trailing semicolon, but only if there weren't any trailing
alphanumeric characters.
</p>
<table>
<tr><th>Original</th><th>Text</th><th>Attribute</th></tr>
<tr><td>&amp;yen;</td><td>&yen;</td><td>&yen;</td></tr>
<tr><td>&amp;yen</td><td>&yen;</td><td>&yen;</td></tr>
<tr><td>&amp;yena</td><td>&amp;yena</td><td>&amp;yena</td></tr>
<tr><td>&amp;yen=</td><td>&yen;=</td><td>&yen;=</td></tr>
</table>
<p>
In HTML Purifier 4.9.0, we changed the behavior of entity parsing
to match entities that had missing trailing semicolons in less
cases, to more closely match HTML5 parsing behavior:
</p>
<table>
<tr><th>Original</th><th>Text</th><th>Attribute</th></tr>
<tr><td>&amp;yen;</td><td>&yen;</td><td>&yen;</td></tr>
<tr><td>&amp;yen</td><td>&yen;</td><td>&yen;</td></tr>
<tr><td>&amp;yena</td><td>&yen;a</td><td>&amp;yena</td></tr>
<tr><td>&amp;yen=</td><td>&yen;=</td><td>&amp;yen=</td></tr>
</table>
<p>
This flag reverts back to pre-HTML Purifier 4.9.0 behavior.
</p>
--# vim: et sw=4 sts=4

10
library/vendor/HTMLPurifier/ConfigSchema/schema/HTML.TargetNoopener.txt vendored Normal file
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@ -0,0 +1,10 @@
--# vim: et sw=4 sts=4
HTML.TargetNoopener
TYPE: bool
VERSION: 4.8.0
DEFAULT: TRUE
--DESCRIPTION--
If enabled, noopener rel attributes are added to links which have
a target attribute associated with them. This prevents malicious
destinations from overwriting the original window.
--# vim: et sw=4 sts=4

7
library/vendor/HTMLPurifier/ConfigSchema/schema/URI.DefaultScheme.txt vendored
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@ -1,5 +1,5 @@
URI.DefaultScheme
TYPE: string
TYPE: string/null
DEFAULT: 'http'
--DESCRIPTION--
@ -7,4 +7,9 @@ DEFAULT: 'http'
Defines through what scheme the output will be served, in order to
select the proper object validator when no scheme information is present.
</p>
<p>
Starting with HTML Purifier 4.9.0, the default scheme can be null, in
which case we reject all URIs which do not have explicit schemes.
</p>
--# vim: et sw=4 sts=4

34
library/vendor/HTMLPurifier/DefinitionCache/Serializer.php vendored
View File

@ -112,6 +112,7 @@ class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCac
}
unlink($dir . '/' . $filename);
}
closedir($dh);
return true;
}
@ -142,6 +143,7 @@ class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCac
unlink($dir . '/' . $filename);
}
}
closedir($dh);
return true;
}
@ -198,11 +200,8 @@ class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCac
if ($result !== false) {
// set permissions of the new file (no execute)
$chmod = $config->get('Cache.SerializerPermissions');
if ($chmod === null) {
// don't do anything
} else {
$chmod = $chmod & 0666;
chmod($file, $chmod);
if ($chmod !== null) {
chmod($file, $chmod & 0666);
}
}
return $result;
@ -217,6 +216,16 @@ class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCac
{
$directory = $this->generateDirectoryPath($config);
$chmod = $config->get('Cache.SerializerPermissions');
if ($chmod === null) {
if (!@mkdir($directory) && !is_dir($directory)) {
trigger_error(
'Could not create directory ' . $directory . '',
E_USER_WARNING
);
return false;
}
return true;
}
if (!is_dir($directory)) {
$base = $this->generateBaseDirectoryPath($config);
if (!is_dir($base)) {
@ -229,25 +238,14 @@ class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCac
} elseif (!$this->_testPermissions($base, $chmod)) {
return false;
}
if ($chmod === null) {
if (!@mkdir($directory, $chmod) && !is_dir($directory)) {
trigger_error(
'Base directory ' . $base . ' does not exist,
please create or change using %Cache.SerializerPath',
'Could not create directory ' . $directory . '',
E_USER_WARNING
);
return false;
}
if ($chmod !== null) {
mkdir($directory, $chmod);
} else {
mkdir($directory);
}
if (!$this->_testPermissions($directory, $chmod)) {
trigger_error(
'Base directory ' . $base . ' does not exist,
please create or change using %Cache.SerializerPath',
E_USER_WARNING
);
return false;
}
} elseif (!$this->_testPermissions($directory, $chmod)) {

0
library/vendor/HTMLPurifier/DefinitionCache/Serializer/README vendored Normal file → Executable file
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12
library/vendor/HTMLPurifier/Encoder.php vendored
View File

@ -101,6 +101,14 @@ class HTMLPurifier_Encoder
* It will parse according to UTF-8 and return a valid UTF8 string, with
* non-SGML codepoints excluded.
*
* Specifically, it will permit:
* \x{9}\x{A}\x{D}\x{20}-\x{7E}\x{A0}-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}
* Source: https://www.w3.org/TR/REC-xml/#NT-Char
* Arguably this function should be modernized to the HTML5 set
* of allowed characters:
* https://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream
* which simultaneously expand and restrict the set of allowed characters.
*
* @param string $str The string to clean
* @param bool $force_php
* @return string
@ -122,15 +130,12 @@ class HTMLPurifier_Encoder
* function that needs to be able to understand UTF-8 characters.
* As of right now, only smart lossless character encoding converters
* would need that, and I'm probably not going to implement them.
* Once again, PHP 6 should solve all our problems.
*/
public static function cleanUTF8($str, $force_php = false)
{
// UTF-8 validity is checked since PHP 4.3.5
// This is an optimization: if the string is already valid UTF-8, no
// need to do PHP stuff. 99% of the time, this will be the case.
// The regexp matches the XML char production, as well as well as excluding
// non-SGML codepoints U+007F to U+009F
if (preg_match(
'/^[\x{9}\x{A}\x{D}\x{20}-\x{7E}\x{A0}-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]*$/Du',
$str
@ -255,6 +260,7 @@ class HTMLPurifier_Encoder
// 7F-9F is not strictly prohibited by XML,
// but it is non-SGML, and thus we don't allow it
(0xA0 <= $mUcs4 && 0xD7FF >= $mUcs4) ||
(0xE000 <= $mUcs4 && 0xFFFD >= $mUcs4) ||
(0x10000 <= $mUcs4 && 0x10FFFF >= $mUcs4)
)
) {

134
library/vendor/HTMLPurifier/EntityParser.php vendored
View File

@ -16,6 +16,138 @@ class HTMLPurifier_EntityParser
*/
protected $_entity_lookup;
/**
* Callback regex string for entities in text.
* @type string
*/
protected $_textEntitiesRegex;
/**
* Callback regex string for entities in attributes.
* @type string
*/
protected $_attrEntitiesRegex;
/**
* Tests if the beginning of a string is a semi-optional regex
*/
protected $_semiOptionalPrefixRegex;
public function __construct() {
// From
// http://stackoverflow.com/questions/15532252/why-is-reg-being-rendered-as-without-the-bounding-semicolon
$semi_optional = "quot|QUOT|lt|LT|gt|GT|amp|AMP|AElig|Aacute|Acirc|Agrave|Aring|Atilde|Auml|COPY|Ccedil|ETH|Eacute|Ecirc|Egrave|Euml|Iacute|Icirc|Igrave|Iuml|Ntilde|Oacute|Ocirc|Ograve|Oslash|Otilde|Ouml|REG|THORN|Uacute|Ucirc|Ugrave|Uuml|Yacute|aacute|acirc|acute|aelig|agrave|aring|atilde|auml|brvbar|ccedil|cedil|cent|copy|curren|deg|divide|eacute|ecirc|egrave|eth|euml|frac12|frac14|frac34|iacute|icirc|iexcl|igrave|iquest|iuml|laquo|macr|micro|middot|nbsp|not|ntilde|oacute|ocirc|ograve|ordf|ordm|oslash|otilde|ouml|para|plusmn|pound|raquo|reg|sect|shy|sup1|sup2|sup3|szlig|thorn|times|uacute|ucirc|ugrave|uml|uuml|yacute|yen|yuml";
// NB: three empty captures to put the fourth match in the right
// place
$this->_semiOptionalPrefixRegex = "/&()()()($semi_optional)/";
$this->_textEntitiesRegex =
'/&(?:'.
// hex
'[#]x([a-fA-F0-9]+);?|'.
// dec
'[#]0*(\d+);?|'.
// string (mandatory semicolon)
// NB: order matters: match semicolon preferentially
'([A-Za-z_:][A-Za-z0-9.\-_:]*);|'.
// string (optional semicolon)
"($semi_optional)".
')/';
$this->_attrEntitiesRegex =
'/&(?:'.
// hex
'[#]x([a-fA-F0-9]+);?|'.
// dec
'[#]0*(\d+);?|'.
// string (mandatory semicolon)
// NB: order matters: match semicolon preferentially
'([A-Za-z_:][A-Za-z0-9.\-_:]*);|'.
// string (optional semicolon)
// don't match if trailing is equals or alphanumeric (URL
// like)
"($semi_optional)(?![=;A-Za-z0-9])".
')/';
}
/**
* Substitute entities with the parsed equivalents. Use this on
* textual data in an HTML document (as opposed to attributes.)
*
* @param string $string String to have entities parsed.
* @return string Parsed string.
*/
public function substituteTextEntities($string)
{
return preg_replace_callback(
$this->_textEntitiesRegex,
array($this, 'entityCallback'),
$string
);
}
/**
* Substitute entities with the parsed equivalents. Use this on
* attribute contents in documents.
*
* @param string $string String to have entities parsed.
* @return string Parsed string.
*/
public function substituteAttrEntities($string)
{
return preg_replace_callback(
$this->_attrEntitiesRegex,
array($this, 'entityCallback'),
$string
);
}
/**
* Callback function for substituteNonSpecialEntities() that does the work.
*
* @param array $matches PCRE matches array, with 0 the entire match, and
* either index 1, 2 or 3 set with a hex value, dec value,
* or string (respectively).
* @return string Replacement string.
*/
protected function entityCallback($matches)
{
$entity = $matches[0];
$hex_part = @$matches[1];
$dec_part = @$matches[2];
$named_part = empty($matches[3]) ? @$matches[4] : $matches[3];
if ($hex_part !== NULL && $hex_part !== "") {
return HTMLPurifier_Encoder::unichr(hexdec($hex_part));
} elseif ($dec_part !== NULL && $dec_part !== "") {
return HTMLPurifier_Encoder::unichr((int) $dec_part);
} else {
if (!$this->_entity_lookup) {
$this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
}
if (isset($this->_entity_lookup->table[$named_part])) {
return $this->_entity_lookup->table[$named_part];
} else {
// exact match didn't match anything, so test if
// any of the semicolon optional match the prefix.
// Test that this is an EXACT match is important to
// prevent infinite loop
if (!empty($matches[3])) {
return preg_replace_callback(
$this->_semiOptionalPrefixRegex,
array($this, 'entityCallback'),
$entity
);
}
return $entity;
}
}
}
// LEGACY CODE BELOW
/**
* Callback regex string for parsing entities.
* @type string
@ -144,7 +276,7 @@ class HTMLPurifier_EntityParser
$entity;
} else {
return isset($this->_special_ent2dec[$matches[3]]) ?
$this->_special_ent2dec[$matches[3]] :
$this->_special_dec2str[$this->_special_ent2dec[$matches[3]]] :
$entity;
}
}

5
library/vendor/HTMLPurifier/Filter/ExtractStyleBlocks.php vendored
View File

@ -95,7 +95,10 @@ class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
if ($tidy !== null) {
$this->_tidy = $tidy;
}
$html = preg_replace_callback('#<style(?:\s.*)?>(.+)</style>#isU', array($this, 'styleCallback'), $html);
// NB: this must be NON-greedy because if we have
// <style>foo</style> <style>bar</style>
// we must not grab foo</style> <style>bar
$html = preg_replace_callback('#<style(?:\s.*)?>(.*)<\/style>#isU', array($this, 'styleCallback'), $html);
$style_blocks = $this->_styleMatches;
$this->_styleMatches = array(); // reset
$context->register('StyleBlocks', $style_blocks); // $context must not be reused

2
library/vendor/HTMLPurifier/Generator.php vendored
View File

@ -146,7 +146,7 @@ class HTMLPurifier_Generator
$attr = $this->generateAttributes($token->attr, $token->name);
if ($this->_flashCompat) {
if ($token->name == "object") {
$flash = new stdclass();
$flash = new stdClass();
$flash->attr = $token->attr;
$flash->param = array();
$this->_flashStack[] = $flash;

21
library/vendor/HTMLPurifier/HTMLModule/TargetNoopener.php vendored Normal file
View File

@ -0,0 +1,21 @@
<?php
/**
* Module adds the target-based noopener attribute transformation to a tags. It
* is enabled by HTML.TargetNoopener
*/
class HTMLPurifier_HTMLModule_TargetNoopener extends HTMLPurifier_HTMLModule
{
/**
* @type string
*/
public $name = 'TargetNoopener';
/**
* @param HTMLPurifier_Config $config
*/
public function setup($config) {
$a = $this->addBlankElement('a');
$a->attr_transform_post[] = new HTMLPurifier_AttrTransform_TargetNoopener();
}
}

5
library/vendor/HTMLPurifier/HTMLModuleManager.php vendored
View File

@ -271,11 +271,14 @@ class HTMLPurifier_HTMLModuleManager
if ($config->get('HTML.TargetBlank')) {
$modules[] = 'TargetBlank';
}
// NB: HTML.TargetNoreferrer must be AFTER HTML.TargetBlank
// NB: HTML.TargetNoreferrer and HTML.TargetNoopener must be AFTER HTML.TargetBlank
// so that its post-attr-transform gets run afterwards.
if ($config->get('HTML.TargetNoreferrer')) {
$modules[] = 'TargetNoreferrer';
}
if ($config->get('HTML.TargetNoopener')) {
$modules[] = 'TargetNoopener';
}
// merge in custom modules
$modules = array_merge($modules, $this->userModules);

12
library/vendor/HTMLPurifier/Injector.php vendored
View File

@ -157,11 +157,13 @@ abstract class HTMLPurifier_Injector
return false;
}
// check for exclusion
for ($i = count($this->currentNesting) - 2; $i >= 0; $i--) {
$node = $this->currentNesting[$i];
$def = $this->htmlDefinition->info[$node->name];
if (isset($def->excludes[$name])) {
return false;
if (!empty($this->currentNesting)) {
for ($i = count($this->currentNesting) - 2; $i >= 0; $i--) {
$node = $this->currentNesting[$i];
$def = $this->htmlDefinition->info[$node->name];
if (isset($def->excludes[$name])) {
return false;
}
}
}
return true;

6
library/vendor/HTMLPurifier/Length.php vendored
View File

@ -26,12 +26,14 @@ class HTMLPurifier_Length
protected $isValid;
/**
* Array Lookup array of units recognized by CSS 2.1
* Array Lookup array of units recognized by CSS 3
* @type array
*/
protected static $allowedUnits = array(
'em' => true, 'ex' => true, 'px' => true, 'in' => true,
'cm' => true, 'mm' => true, 'pt' => true, 'pc' => true
'cm' => true, 'mm' => true, 'pt' => true, 'pc' => true,
'ch' => true, 'rem' => true, 'vw' => true, 'vh' => true,
'vmin' => true, 'vmax' => true
);
/**

38
library/vendor/HTMLPurifier/Lexer.php vendored
View File

@ -96,7 +96,7 @@ class HTMLPurifier_Lexer
break;
}
if (class_exists('DOMDocument') &&
if (class_exists('DOMDocument', false) &&
method_exists('DOMDocument', 'loadHTML') &&
!extension_loaded('domxml')
) {
@ -169,21 +169,24 @@ class HTMLPurifier_Lexer
'&#x27;' => "'"
);
public function parseText($string, $config) {
return $this->parseData($string, false, $config);
}
public function parseAttr($string, $config) {
return $this->parseData($string, true, $config);
}
/**
* Parses special entities into the proper characters.
*
* This string will translate escaped versions of the special characters
* into the correct ones.
*
* @warning
* You should be able to treat the output of this function as
* completely parsed, but that's only because all other entities should
* have been handled previously in substituteNonSpecialEntities()
*
* @param string $string String character data to be parsed.
* @return string Parsed character data.
*/
public function parseData($string)
public function parseData($string, $is_attr, $config)
{
// following functions require at least one character
if ($string === '') {
@ -209,7 +212,15 @@ class HTMLPurifier_Lexer
}
// hmm... now we have some uncommon entities. Use the callback.
$string = $this->_entity_parser->substituteSpecialEntities($string);
if ($config->get('Core.LegacyEntityDecoder')) {
$string = $this->_entity_parser->substituteSpecialEntities($string);
} else {
if ($is_attr) {
$string = $this->_entity_parser->substituteAttrEntities($string);
} else {
$string = $this->_entity_parser->substituteTextEntities($string);
}
}
return $string;
}
@ -323,7 +334,9 @@ class HTMLPurifier_Lexer
}
// expand entities that aren't the big five
$html = $this->_entity_parser->substituteNonSpecialEntities($html);
if ($config->get('Core.LegacyEntityDecoder')) {
$html = $this->_entity_parser->substituteNonSpecialEntities($html);
}
// clean into wellformed UTF-8 string for an SGML context: this has
// to be done after entity expansion because the entities sometimes
@ -335,6 +348,13 @@ class HTMLPurifier_Lexer
$html = preg_replace('#<\?.+?\?>#s', '', $html);
}
$hidden_elements = $config->get('Core.HiddenElements');
if ($config->get('Core.AggressivelyRemoveScript') &&
!($config->get('HTML.Trusted') || !$config->get('Core.RemoveScriptContents')
|| empty($hidden_elements["script"]))) {
$html = preg_replace('#<script[^>]*>.*?</script>#i', '', $html);
}
return $html;
}

91
library/vendor/HTMLPurifier/Lexer/DOMLex.php vendored
View File

@ -72,12 +72,20 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
$doc->loadHTML($html);
restore_error_handler();
$body = $doc->getElementsByTagName('html')->item(0)-> // <html>
getElementsByTagName('body')->item(0); // <body>
$div = $body->getElementsByTagName('div')->item(0); // <div>
$tokens = array();
$this->tokenizeDOM(
$doc->getElementsByTagName('html')->item(0)-> // <html>
getElementsByTagName('body')->item(0), // <body>
$tokens
);
$this->tokenizeDOM($div, $tokens, $config);
// If the div has a sibling, that means we tripped across
// a premature </div> tag. So remove the div we parsed,
// and then tokenize the rest of body. We can't tokenize
// the sibling directly as we'll lose the tags in that case.
if ($div->nextSibling) {
$body->removeChild($div);
$this->tokenizeDOM($body, $tokens, $config);
}
return $tokens;
}
@ -88,7 +96,7 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
* @param HTMLPurifier_Token[] $tokens Array-list of already tokenized tokens.
* @return HTMLPurifier_Token of node appended to previously passed tokens.
*/
protected function tokenizeDOM($node, &$tokens)
protected function tokenizeDOM($node, &$tokens, $config)
{
$level = 0;
$nodes = array($level => new HTMLPurifier_Queue(array($node)));
@ -97,7 +105,7 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
while (!$nodes[$level]->isEmpty()) {
$node = $nodes[$level]->shift(); // FIFO
$collect = $level > 0 ? true : false;
$needEndingTag = $this->createStartNode($node, $tokens, $collect);
$needEndingTag = $this->createStartNode($node, $tokens, $collect, $config);
if ($needEndingTag) {
$closingNodes[$level][] = $node;
}
@ -118,6 +126,41 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
} while ($level > 0);
}
/**
* Portably retrieve the tag name of a node; deals with older versions
* of libxml like 2.7.6
* @param DOMNode $node
*/
protected function getTagName($node)
{
if (property_exists($node, 'tagName')) {
return $node->tagName;
} else if (property_exists($node, 'nodeName')) {
return $node->nodeName;
} else if (property_exists($node, 'localName')) {
return $node->localName;
}
return null;
}
/**
* Portably retrieve the data of a node; deals with older versions
* of libxml like 2.7.6
* @param DOMNode $node
*/
protected function getData($node)
{
if (property_exists($node, 'data')) {
return $node->data;
} else if (property_exists($node, 'nodeValue')) {
return $node->nodeValue;
} else if (property_exists($node, 'textContent')) {
return $node->textContent;
}
return null;
}
/**
* @param DOMNode $node DOMNode to be tokenized.
* @param HTMLPurifier_Token[] $tokens Array-list of already tokenized tokens.
@ -127,13 +170,16 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
* @return bool if the token needs an endtoken
* @todo data and tagName properties don't seem to exist in DOMNode?
*/
protected function createStartNode($node, &$tokens, $collect)
protected function createStartNode($node, &$tokens, $collect, $config)
{
// intercept non element nodes. WE MUST catch all of them,
// but we're not getting the character reference nodes because
// those should have been preprocessed
if ($node->nodeType === XML_TEXT_NODE) {
$tokens[] = $this->factory->createText($node->data);
$data = $this->getData($node); // Handle variable data property
if ($data !== null) {
$tokens[] = $this->factory->createText($data);
}
return false;
} elseif ($node->nodeType === XML_CDATA_SECTION_NODE) {
// undo libxml's special treatment of <script> and <style> tags
@ -151,7 +197,7 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
}
}
}
$tokens[] = $this->factory->createText($this->parseData($data));
$tokens[] = $this->factory->createText($this->parseText($data, $config));
return false;
} elseif ($node->nodeType === XML_COMMENT_NODE) {
// this is code is only invoked for comments in script/style in versions
@ -163,21 +209,20 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
// not-well tested: there may be other nodes we have to grab
return false;
}
$attr = $node->hasAttributes() ? $this->transformAttrToAssoc($node->attributes) : array();
$tag_name = $this->getTagName($node); // Handle variable tagName property
if (empty($tag_name)) {
return (bool) $node->childNodes->length;
}
// We still have to make sure that the element actually IS empty
if (!$node->childNodes->length) {
if ($collect) {
$tokens[] = $this->factory->createEmpty($node->tagName, $attr);
$tokens[] = $this->factory->createEmpty($tag_name, $attr);
}
return false;
} else {
if ($collect) {
$tokens[] = $this->factory->createStart(
$tag_name = $node->tagName, // somehow, it get's dropped
$attr
);
$tokens[] = $this->factory->createStart($tag_name, $attr);
}
return true;
}
@ -189,10 +234,10 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
*/
protected function createEndNode($node, &$tokens)
{
$tokens[] = $this->factory->createEnd($node->tagName);
$tag_name = $this->getTagName($node); // Handle variable tagName property
$tokens[] = $this->factory->createEnd($tag_name);
}
/**
* Converts a DOMNamedNodeMap of DOMAttr objects into an assoc array.
*
@ -252,7 +297,7 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
* @param HTMLPurifier_Context $context
* @return string
*/
protected function wrapHTML($html, $config, $context)
protected function wrapHTML($html, $config, $context, $use_div = true)
{
$def = $config->getDefinition('HTML');
$ret = '';
@ -271,7 +316,11 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
$ret .= '<html><head>';
$ret .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
// No protection if $html contains a stray </div>!
$ret .= '</head><body>' . $html . '</body></html>';
$ret .= '</head><body>';
if ($use_div) $ret .= '<div>';
$ret .= $html;
if ($use_div) $ret .= '</div>';
$ret .= '</body></html>';
return $ret;
}
}

16
library/vendor/HTMLPurifier/Lexer/DirectLex.php vendored
View File

@ -129,12 +129,12 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
// We are not inside tag and there still is another tag to parse
$token = new
HTMLPurifier_Token_Text(
$this->parseData(
$this->parseText(
substr(
$html,
$cursor,
$position_next_lt - $cursor
)
), $config
)
);
if ($maintain_line_numbers) {
@ -154,11 +154,11 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
// Create Text of rest of string
$token = new
HTMLPurifier_Token_Text(
$this->parseData(
$this->parseText(
substr(
$html,
$cursor
)
), $config
)
);
if ($maintain_line_numbers) {
@ -324,8 +324,8 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
$token = new
HTMLPurifier_Token_Text(
'<' .
$this->parseData(
substr($html, $cursor)
$this->parseText(
substr($html, $cursor), $config
)
);
if ($maintain_line_numbers) {
@ -429,7 +429,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
if ($value === false) {
$value = '';
}
return array($key => $this->parseData($value));
return array($key => $this->parseAttr($value, $config));
}
// setup loop environment
@ -518,7 +518,7 @@ class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
if ($value === false) {
$value = '';
}
$array[$key] = $this->parseData($value);
$array[$key] = $this->parseAttr($value, $config);
$cursor++;
} else {
// boolattr

13
library/vendor/HTMLPurifier/Lexer/PH5P.php vendored
View File

@ -21,7 +21,7 @@ class HTMLPurifier_Lexer_PH5P extends HTMLPurifier_Lexer_DOMLex
public function tokenizeHTML($html, $config, $context)
{
$new_html = $this->normalize($html, $config, $context);
$new_html = $this->wrapHTML($new_html, $config, $context);
$new_html = $this->wrapHTML($new_html, $config, $context, false /* no div */);
try {
$parser = new HTML5($new_html);
$doc = $parser->save();
@ -34,9 +34,9 @@ class HTMLPurifier_Lexer_PH5P extends HTMLPurifier_Lexer_DOMLex
$tokens = array();
$this->tokenizeDOM(
$doc->getElementsByTagName('html')->item(0)-> // <html>
getElementsByTagName('body')->item(0) // <body>
getElementsByTagName('body')->item(0) // <body>
,
$tokens
$tokens, $config
);
return $tokens;
}
@ -1507,7 +1507,7 @@ class HTML5
$entity = $this->character($start, $this->char);
$cond = strlen($e_name) > 0;
// The rest of the parsing happens bellow.
// The rest of the parsing happens below.
break;
// Anything else
@ -1515,6 +1515,7 @@ class HTML5
// Consume the maximum number of characters possible, with the
// consumed characters case-sensitively matching one of the
// identifiers in the first column of the entities table.
$e_name = $this->characters('0-9A-Za-z;', $this->char + 1);
$len = strlen($e_name);
@ -1534,7 +1535,7 @@ class HTML5
}
$cond = isset($entity);
// The rest of the parsing happens bellow.
// The rest of the parsing happens below.
break;
}
@ -1547,7 +1548,7 @@ class HTML5
// Return a character token for the character corresponding to the
// entity name (as given by the second column of the entities table).
return html_entity_decode('&' . $entity . ';', ENT_QUOTES, 'UTF-8');
return html_entity_decode('&' . rtrim($entity, ';') . ';', ENT_QUOTES, 'UTF-8');
}
private function emitToken($token)

14
library/vendor/HTMLPurifier/SOURCE vendored
View File

@ -1,10 +1,10 @@
GLOBIGNORE=$0; rm -rf *
rm ../HTMLPurifier*.php
curl https://codeload.github.com/ezyang/htmlpurifier/tar.gz/v4.8.0 -o htmlpurifier-4.8.0.tar.gz
tar xzf htmlpurifier-4.8.0.tar.gz --strip-components 1 htmlpurifier-4.8.0/LICENSE
tar xzf htmlpurifier-4.8.0.tar.gz --strip-components 1 htmlpurifier-4.8.0/VERSION
tar xzf htmlpurifier-4.8.0.tar.gz -C ../ --strip-components 2 htmlpurifier-4.8.0/library/HTMLPurifier.php
tar xzf htmlpurifier-4.8.0.tar.gz -C ../ --strip-components 2 htmlpurifier-4.8.0/library/HTMLPurifier.autoload.php
tar xzf htmlpurifier-4.8.0.tar.gz --strip-components 3 htmlpurifier-4.8.0/library/HTMLPurifier/*
rm htmlpurifier-4.8.0.tar.gz
curl https://codeload.github.com/ezyang/htmlpurifier/tar.gz/v4.10.0 -o htmlpurifier-4.10.0.tar.gz
tar xzf htmlpurifier-4.10.0.tar.gz --strip-components 1 htmlpurifier-4.10.0/LICENSE
tar xzf htmlpurifier-4.10.0.tar.gz --strip-components 1 htmlpurifier-4.10.0/VERSION
tar xzf htmlpurifier-4.10.0.tar.gz -C ../ --strip-components 2 htmlpurifier-4.10.0/library/HTMLPurifier.php
tar xzf htmlpurifier-4.10.0.tar.gz -C ../ --strip-components 2 htmlpurifier-4.10.0/library/HTMLPurifier.autoload.php
tar xzf htmlpurifier-4.10.0.tar.gz --strip-components 3 htmlpurifier-4.10.0/library/HTMLPurifier/*
rm htmlpurifier-4.10.0.tar.gz

67
library/vendor/HTMLPurifier/Strategy/MakeWellFormed.php vendored
View File

@ -165,7 +165,7 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
if (empty($zipper->front)) break;
$token = $zipper->prev($token);
// indicate that other injectors should not process this token,
// but we need to reprocess it
// but we need to reprocess it. See Note [Injector skips]
unset($token->skip[$i]);
$token->rewind = $i;
if ($token instanceof HTMLPurifier_Token_Start) {
@ -210,6 +210,7 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
if ($token instanceof HTMLPurifier_Token_Text) {
foreach ($this->injectors as $i => $injector) {
if (isset($token->skip[$i])) {
// See Note [Injector skips]
continue;
}
if ($token->rewind !== null && $token->rewind !== $i) {
@ -367,6 +368,7 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
if ($ok) {
foreach ($this->injectors as $i => $injector) {
if (isset($token->skip[$i])) {
// See Note [Injector skips]
continue;
}
if ($token->rewind !== null && $token->rewind !== $i) {
@ -422,6 +424,7 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
$token->start = $current_parent;
foreach ($this->injectors as $i => $injector) {
if (isset($token->skip[$i])) {
// See Note [Injector skips]
continue;
}
if ($token->rewind !== null && $token->rewind !== $i) {
@ -534,12 +537,17 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
*/
protected function processToken($token, $injector = -1)
{
// Zend OpCache miscompiles $token = array($token), so
// avoid this pattern. See: https://github.com/ezyang/htmlpurifier/issues/108
// normalize forms of token
if (is_object($token)) {
$token = array(1, $token);
$tmp = $token;
$token = array(1, $tmp);
}
if (is_int($token)) {
$token = array($token);
$tmp = $token;
$token = array($tmp);
}
if ($token === false) {
$token = array(1);
@ -561,7 +569,12 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
list($old, $r) = $this->zipper->splice($this->token, $delete, $token);
if ($injector > -1) {
// determine appropriate skips
// See Note [Injector skips]
// Determine appropriate skips. Here's what the code does:
// *If* we deleted one or more tokens, copy the skips
// of those tokens into the skips of the new tokens (in $token).
// Also, mark the newly inserted tokens as having come from
// $injector.
$oldskip = isset($old[0]) ? $old[0]->skip : array();
foreach ($token as $object) {
$object->skip = $oldskip;
@ -597,4 +610,50 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
}
}
// Note [Injector skips]
// ~~~~~~~~~~~~~~~~~~~~~
// When I originally designed this class, the idea behind the 'skip'
// property of HTMLPurifier_Token was to help avoid infinite loops
// in injector processing. For example, suppose you wrote an injector
// that bolded swear words. Naively, you might write it so that
// whenever you saw ****, you replaced it with <strong>****</strong>.
//
// When this happens, we will reprocess all of the tokens with the
// other injectors. Now there is an opportunity for infinite loop:
// if we rerun the swear-word injector on these tokens, we might
// see **** and then reprocess again to get
// <strong><strong>****</strong></strong> ad infinitum.
//
// Thus, the idea of a skip is that once we process a token with
// an injector, we mark all of those tokens as having "come from"
// the injector, and we never run the injector again on these
// tokens.
//
// There were two more complications, however:
//
// - With HTMLPurifier_Injector_RemoveEmpty, we noticed that if
// you had <b><i></i></b>, after you removed the <i></i>, you
// really would like this injector to go back and reprocess
// the <b> tag, discovering that it is now empty and can be
// removed. So we reintroduced the possibility of infinite looping
// by adding a "rewind" function, which let you go back to an
// earlier point in the token stream and reprocess it with injectors.
// Needless to say, we need to UN-skip the token so it gets
// reprocessed.
//
// - Suppose that you successfuly process a token, replace it with
// one with your skip mark, but now another injector wants to
// process the skipped token with another token. Should you continue
// to skip that new token, or reprocess it? If you reprocess,
// you can end up with an infinite loop where one injector converts
// <a> to <b>, and then another injector converts it back. So
// we inherit the skips, but for some reason, I thought that we
// should inherit the skip from the first token of the token
// that we deleted. Why? Well, it seems to work OK.
//
// If I were to redesign this functionality, I would absolutely not
// go about doing it this way: the semantics are just not very well
// defined, and in any case you probably wanted to operate on trees,
// not token streams.
// vim: et sw=4 sts=4

2
library/vendor/HTMLPurifier/Token.php vendored
View File

@ -26,7 +26,7 @@ abstract class HTMLPurifier_Token
public $armor = array();
/**
* Used during MakeWellFormed.
* Used during MakeWellFormed. See Note [Injector skips]
* @type
*/
public $skip;

12
library/vendor/HTMLPurifier/URI.php vendored
View File

@ -85,11 +85,13 @@ class HTMLPurifier_URI
$def = $config->getDefinition('URI');
$scheme_obj = $def->getDefaultScheme($config, $context);
if (!$scheme_obj) {
// something funky happened to the default scheme object
trigger_error(
'Default scheme object "' . $def->defaultScheme . '" was not readable',
E_USER_WARNING
);
if ($def->defaultScheme !== null) {
// something funky happened to the default scheme object
trigger_error(
'Default scheme object "' . $def->defaultScheme . '" was not readable',
E_USER_WARNING
);
} // suppress error if it's null
return false;
}
}

2
library/vendor/HTMLPurifier/VERSION vendored
View File

@ -1 +1 @@
4.8.0
4.10.0