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Fix #67, don't use <body> tags in comments for %Core.ConvertDocumentToFragment

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Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
This commit is contained in:
Edward Z. Yang 2016-03-27 15:19:32 -07:00
parent f14076dc3e
commit b4981c3395
3 changed files with 21 additions and 4 deletions
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2
NEWS
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@ -24,6 +24,8 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
ul/ol without allowing li.
- On some versions of PHP, the Serializer DefinitionCache could
infinite loop when the directory exists but is not listable. (#49)
- Don't match for <body> inside comments with
%Core.ConvertDocumentToFragment. (#67)
4.7.0, released 2015-08-04
# opacity is now considered a "tricky" CSS property rather than a

13
library/HTMLPurifier/Lexer.php
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@ -345,12 +345,17 @@ class HTMLPurifier_Lexer
public function extractBody($html)
{
$matches = array();
$result = preg_match('!<body[^>]*>(.*)</body>!is', $html, $matches);
$result = preg_match('|(.*?)<body[^>]*>(.*)</body>|is', $html, $matches);
if ($result) {
return $matches[1];
} else {
return $html;
// Make sure it's not in a comment
$comment_start = strrpos($matches[1], '<!--');
$comment_end = strrpos($matches[1], '-->');
if ($comment_start === false ||
($comment_end !== false && $comment_end > $comment_start)) {
return $matches[2];
}
}
return $html;
}
}

10
tests/HTMLPurifier/LexerTest.php
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@ -169,6 +169,16 @@ class HTMLPurifier_LexerTest extends HTMLPurifier_Harness
$this->assertExtractBody('<body>foo</body>bar</body>', 'foo</body>bar');
}
public function test_extractBody_ignoreCommented()
{
$this->assertExtractBody('$<!-- <body>foo</body> -->^');
}
public function test_extractBody_butCanStillWork()
{
$this->assertExtractBody('<!-- b --><body>a</body>', 'a');
}
// HTMLPurifier_Lexer->tokenizeHTML() --------------------------------------
public function assertTokenization($input, $expect, $alt_expect = array())