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[2.1.2] Implement experimental HTML5 parsing using PH5P

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- Fix debugger so that tokens can be printed without an index
- Fix some broken PEAR unit tests

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1383 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang 2007-08-19 18:49:35 +00:00
parent 423afedbf4
commit cb92a57e4e
7 changed files with 4014 additions and 26 deletions
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8
NEWS
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@ -11,6 +11,12 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
2.1.2, unknown release date 2.1.2, unknown release date
! Implemented Object module for trusted users ! Implemented Object module for trusted users
! Implemented experimental HTML5 parsing mode using PH5P. To use, add
this to your code:
require_once 'HTMLPurifier/Lexer/PH5P.php';
$config->set('Core', 'LexerImpl', PH5P');
Note that this Lexer introduces some classes not in the HTMLPurifier
namespace.
- Fix non-visible parsing error in DirectLex with empty tags that have - Fix non-visible parsing error in DirectLex with empty tags that have
slashes inside attribute values. slashes inside attribute values.
- Fix typo in CSS definition: border-collapse:seperate; was incorrectly - Fix typo in CSS definition: border-collapse:seperate; was incorrectly
@ -21,6 +27,8 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
. Unit test refactoring for one logical test per test function . Unit test refactoring for one logical test per test function
. Config and context parameters in ComplexHarness deprecated: instead, edit . Config and context parameters in ComplexHarness deprecated: instead, edit
the $config and $context member variables the $config and $context member variables
. HTML wrapper in DOMLex now takes DTD identifiers into account; doesn't
really make a difference, but is good for completeness sake
2.1.1, released 2007-08-04 2.1.1, released 2007-08-04
- Fix show-stopper bug in %URI.MakeAbsolute functionality - Fix show-stopper bug in %URI.MakeAbsolute functionality

3
library/HTMLPurifier/Lexer.php
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@ -189,6 +189,9 @@ class HTMLPurifier_Lexer
return new HTMLPurifier_Lexer_DOMLex(); return new HTMLPurifier_Lexer_DOMLex();
case 'DirectLex': case 'DirectLex':
return new HTMLPurifier_Lexer_DirectLex(); return new HTMLPurifier_Lexer_DirectLex();
case 'PH5P':
// experimental Lexer that must be manually included
return new HTMLPurifier_Lexer_PH5P();
default: default:
trigger_error("Cannot instantiate unrecognized Lexer type " . htmlspecialchars($lexer), E_USER_ERROR); trigger_error("Cannot instantiate unrecognized Lexer type " . htmlspecialchars($lexer), E_USER_ERROR);
} }

29
library/HTMLPurifier/Lexer/DOMLex.php
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@ -53,14 +53,7 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
} }
// preprocess html, essential for UTF-8 // preprocess html, essential for UTF-8
$html = $html = $this->wrapHTML($html, $config, $context);
'<!DOCTYPE html '.
'PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"'.
'"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'.
'<html><head>'.
'<meta http-equiv="Content-Type" content="text/html;'.
' charset=utf-8" />'.
'</head><body><div>'.$html.'</div></body></html>';
$doc = new DOMDocument(); $doc = new DOMDocument();
$doc->encoding = 'UTF-8'; // theoretically, the above has this covered $doc->encoding = 'UTF-8'; // theoretically, the above has this covered
@ -177,5 +170,25 @@ class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
return '<!--' . str_replace('&', '&amp;', $matches[1]) . $matches[2]; return '<!--' . str_replace('&', '&amp;', $matches[1]) . $matches[2];
} }
/**
* Wraps an HTML fragment in the necessary HTML
*/
function wrapHTML($html, $config, &$context) {
$def = $config->getDefinition('HTML');
$ret = '';
if (!empty($def->doctype->dtdPublic) || !empty($def->doctype->dtdSystem)) {
$ret .= '<!DOCTYPE html ';
if (!empty($def->doctype->dtdPublic)) $ret .= 'PUBLIC "' . $def->doctype->dtdPublic . '" ';
if (!empty($def->doctype->dtdSystem)) $ret .= '"' . $def->doctype->dtdSystem . '" ';
$ret .= '>';
}
$ret .= '<html><head>';
$ret .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
$ret .= '</head><body><div>'.$html.'</div></body></html>';
return $ret;
}
} }

3886
library/HTMLPurifier/Lexer/PH5P.php Normal file
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File diff suppressed because it is too large Load Diff

45
maintenance/PH5P.patch Normal file
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@ -0,0 +1,45 @@
--- old.php 2007-08-19 14:42:33.640625000 -0400
+++ new.php 2007-08-19 14:41:51.609375000 -0400
@@ -211,7 +211,10 @@
// If nothing is returned, emit a U+0026 AMPERSAND character token.
// Otherwise, emit the character token that was returned.
$char = (!$entity) ? '&' : $entity;
- $this->emitToken($char);
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => $char
+ ));
// Finally, switch to the data state.
$this->state = 'data';
@@ -708,7 +711,7 @@
} elseif($char === '&') {
/* U+0026 AMPERSAND (&)
Switch to the entity in attribute value state. */
- $this->entityInAttributeValueState('non');
+ $this->entityInAttributeValueState();
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
@@ -738,7 +741,8 @@
? '&'
: $entity;
- $this->emitToken($char);
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
}
private function bogusCommentState() {
@@ -1066,6 +1070,11 @@
$this->char++;
if(in_array($id, $this->entities)) {
+ if ($e_name[$c-1] !== ';') {
+ if ($c < $len && $e_name[$c] == ';') {
+ $this->char++; // consume extra semicolon
+ }
+ }
$entity = $id;
break;
}

6
tests/Debugger.php
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@ -54,14 +54,14 @@ function isInScopes($array = array()) {
} }
/**#@-*/ /**#@-*/
function printTokens($tokens, $index) { function printTokens($tokens, $index = null) {
$string = '<pre>'; $string = '<pre>';
$generator = new HTMLPurifier_Generator(); $generator = new HTMLPurifier_Generator();
foreach ($tokens as $i => $token) { foreach ($tokens as $i => $token) {
if ($index == $i) $string .= '[<strong>'; if ($index === $i) $string .= '[<strong>';
$string .= "<sup>$i</sup>"; $string .= "<sup>$i</sup>";
$string .= $generator->escape($generator->generateFromToken($token)); $string .= $generator->escape($generator->generateFromToken($token));
if ($index == $i) $string .= '</strong>]'; if ($index === $i) $string .= '</strong>]';
} }
$string .= '</pre>'; $string .= '</pre>';
echo $string; echo $string;

63
tests/HTMLPurifier/LexerTest.php
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@ -18,6 +18,9 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
require_once 'HTMLPurifier/Lexer/PEARSax3.php'; require_once 'HTMLPurifier/Lexer/PEARSax3.php';
$this->_has_pear = true; $this->_has_pear = true;
} }
if ($GLOBALS['HTMLPurifierTest']['PH5P']) {
require_once 'HTMLPurifier/Lexer/PH5P.php';
}
} }
// HTMLPurifier_Lexer::create() -------------------------------------------- // HTMLPurifier_Lexer::create() --------------------------------------------
@ -139,14 +142,21 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
if ($this->_has_pear) $lexers['PEARSax3'] = new HTMLPurifier_Lexer_PEARSax3(); if ($this->_has_pear) $lexers['PEARSax3'] = new HTMLPurifier_Lexer_PEARSax3();
if (version_compare(PHP_VERSION, "5", ">=") && class_exists('DOMDocument')) { if (version_compare(PHP_VERSION, "5", ">=") && class_exists('DOMDocument')) {
$lexers['DOMLex'] = new HTMLPurifier_Lexer_DOMLex(); $lexers['DOMLex'] = new HTMLPurifier_Lexer_DOMLex();
$lexers['PH5P'] = new HTMLPurifier_Lexer_PH5P();
} }
foreach ($lexers as $name => $lexer) { foreach ($lexers as $name => $lexer) {
$result = $lexer->tokenizeHTML($input, $this->config, $this->context); $result = $lexer->tokenizeHTML($input, $this->config, $this->context);
if (isset($alt_expect[$name])) { if (isset($alt_expect[$name])) {
if ($alt_expect[$name] === false) continue; if ($alt_expect[$name] === false) continue;
$this->assertIdentical($result, $alt_expect[$name]); $t_expect = $alt_expect[$name];
$this->assertIdentical($result, $alt_expect[$name], "$name: %s");
} else { } else {
$this->assertIdentical($result, $expect); $t_expect = $expect;
$this->assertIdentical($result, $expect, "$name: %s");
}
if ($t_expect != $result) {
printTokens($result);
//var_dump($result);
} }
} }
} }
@ -206,8 +216,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_End('ASDF'), new HTMLPurifier_Token_End('ASDF'),
), ),
array( array(
// DOMLex automatically closes invalid tags 'DOMLex' => $alt = array(
'DOMLex' => array(
new HTMLPurifier_Token_Empty('asdf'), new HTMLPurifier_Token_Empty('asdf'),
new HTMLPurifier_Token_Empty('d'), new HTMLPurifier_Token_Empty('d'),
new HTMLPurifier_Token_Start('pooloka'), new HTMLPurifier_Token_Start('pooloka'),
@ -216,6 +225,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_End('poolasdf'), new HTMLPurifier_Token_End('poolasdf'),
new HTMLPurifier_Token_End('pooloka'), new HTMLPurifier_Token_End('pooloka'),
), ),
'PH5P' => $alt,
) )
); );
} }
@ -244,7 +254,10 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
function test_tokenizeHTML_comment() { function test_tokenizeHTML_comment() {
$this->assertTokenization( $this->assertTokenization(
'<!-- Comment -->', '<!-- Comment -->',
array( new HTMLPurifier_Token_Comment(' Comment ') ) array( new HTMLPurifier_Token_Comment(' Comment ') ),
array(
'PEARSax3' => array( new HTMLPurifier_Token_Comment('-- Comment --') ),
)
); );
} }
@ -253,7 +266,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
'<!-- not so well formed --->', '<!-- not so well formed --->',
array( new HTMLPurifier_Token_Comment(' not so well formed -') ), array( new HTMLPurifier_Token_Comment(' not so well formed -') ),
array( array(
'PEARSax3' => false, // behavior is undefined 'PEARSax3' => array( new HTMLPurifier_Token_Comment('-- not so well formed ---') ),
) )
); );
} }
@ -266,6 +279,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
// I like our behavior better, but it's non-standard // I like our behavior better, but it's non-standard
'DOMLex' => array( new HTMLPurifier_Token_Empty('a', array('href'=>'')) ), 'DOMLex' => array( new HTMLPurifier_Token_Empty('a', array('href'=>'')) ),
'PEARSax3' => array( new HTMLPurifier_Token_Start('a', array('href'=>'')) ), 'PEARSax3' => array( new HTMLPurifier_Token_Start('a', array('href'=>'')) ),
'PH5P' => false, // total barfing, grabs scaffolding too
) )
); );
} }
@ -277,13 +291,13 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_Text('<b>') new HTMLPurifier_Token_Text('<b>')
), ),
array( array(
// it is possible to configure PEARSax3 to clump nodes together, // some parsers will separate entities out
// I just don't know how 'PEARSax3' => $split = array(
'PEARSax3' => array(
new HTMLPurifier_Token_Text('<'), new HTMLPurifier_Token_Text('<'),
new HTMLPurifier_Token_Text('b'), new HTMLPurifier_Token_Text('b'),
new HTMLPurifier_Token_Text('>'), new HTMLPurifier_Token_Text('>'),
) ),
'PH5P' => $split,
) )
); );
} }
@ -298,6 +312,9 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_Start('a', array('"' => '')) new HTMLPurifier_Token_Start('a', array('"' => ''))
), ),
'PEARSax3' => $tokens, 'PEARSax3' => $tokens,
'PH5P' => array(
new HTMLPurifier_Token_Empty('a', array('"' => ''))
),
) )
); );
} }
@ -312,7 +329,10 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
function test_tokenizeHTML_escapedQuote() { function test_tokenizeHTML_escapedQuote() {
$this->assertTokenization( $this->assertTokenization(
'&quot;', '&quot;',
array( new HTMLPurifier_Token_Text('"') ) array( new HTMLPurifier_Token_Text('"') ),
array(
'PEARSax3' => false, // PEAR barfs on this
)
); );
} }
@ -322,7 +342,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
array( new HTMLPurifier_Token_Text('You <b>can&#39;t</b> get me!') ), array( new HTMLPurifier_Token_Text('You <b>can&#39;t</b> get me!') ),
array( array(
// PEAR splits up all of the CDATA // PEAR splits up all of the CDATA
'PEARSax3' => array( 'PEARSax3' => $split = array(
new HTMLPurifier_Token_Text('You '), new HTMLPurifier_Token_Text('You '),
new HTMLPurifier_Token_Text('<'), new HTMLPurifier_Token_Text('<'),
new HTMLPurifier_Token_Text('b'), new HTMLPurifier_Token_Text('b'),
@ -335,6 +355,7 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_Text('>'), new HTMLPurifier_Token_Text('>'),
new HTMLPurifier_Token_Text(' get me!'), new HTMLPurifier_Token_Text(' get me!'),
), ),
'PH5P' => $split,
) )
); );
} }
@ -351,10 +372,11 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
'<![CDATA[&rarr;]]>', '<![CDATA[&rarr;]]>',
array( new HTMLPurifier_Token_Text("&rarr;") ), array( new HTMLPurifier_Token_Text("&rarr;") ),
array( array(
'PEARSax3' => array( 'PEARSax3' => $split = array(
new HTMLPurifier_Token_Text('&'), new HTMLPurifier_Token_Text('&'),
new HTMLPurifier_Token_Text('rarr;'), new HTMLPurifier_Token_Text('rarr;'),
), ),
'PH5P' => $split,
) )
); );
} }
@ -403,6 +425,13 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
new HTMLPurifier_Token_End('b'), new HTMLPurifier_Token_End('b'),
), ),
'PEARSax3' => false, // totally mangled 'PEARSax3' => false, // totally mangled
'PH5P' => array( // interesting grouping
new HTMLPurifier_Token_Start('b'),
new HTMLPurifier_Token_Text('Whoa! '),
new HTMLPurifier_Token_Text('<'),
new HTMLPurifier_Token_Text('3 That\'s not good >.>'),
new HTMLPurifier_Token_End('b'),
),
) )
); );
} }
@ -426,7 +455,8 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
array( new HTMLPurifier_Token_Comment(' This >< comment') ), array( new HTMLPurifier_Token_Comment(' This >< comment') ),
array( array(
'DOMLex' => false, 'DOMLex' => false,
'PEARSax3' => false 'PEARSax3' => false,
'PH5P' => false,
) )
); );
} }
@ -434,14 +464,17 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
function test_tokenizeHTML_scriptCDATAContents() { function test_tokenizeHTML_scriptCDATAContents() {
$this->config->set('HTML', 'Trusted', true); $this->config->set('HTML', 'Trusted', true);
$this->assertTokenization( $this->assertTokenization(
'<script>alert("<foo>");</script>', 'Foo: <script>alert("<foo>");</script>',
array( array(
new HTMLPurifier_Token_Text('Foo: '),
new HTMLPurifier_Token_Start('script'), new HTMLPurifier_Token_Start('script'),
new HTMLPurifier_Token_Text('alert("<foo>");'), new HTMLPurifier_Token_Text('alert("<foo>");'),
new HTMLPurifier_Token_End('script'), new HTMLPurifier_Token_End('script'),
), ),
array( array(
'PEARSax3' => false, 'PEARSax3' => false,
// PH5P, for some reason, bubbles the script to <head>
'PH5P' => false,
) )
); );
} }