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<?php
namespace MediaWiki\Tests\Parser;
use MediaWiki\Parser\Sanitizer;
use MediaWikiUnitTestCase;
use UtfNormal\Constants;
/**
* @group Sanitizer
* @covers \MediaWiki\Parser\Sanitizer
*/
class SanitizerUnitTest extends MediaWikiUnitTestCase {
/**
* @dataProvider provideDecodeCharReferences
*/
public function testDecodeCharReferences( string $expected, string $input ) {
$this->assertSame( $expected, Sanitizer::decodeCharReferences( $input ) );
}
public static function provideDecodeCharReferences() {
return [
'decode named entities' => [
"\u{00E9}cole",
'école',
],
'decode numeric entities' => [
"\u{0108}io bonas dans l'\u{00E9}cole!",
"Ĉio bonas dans l'école!",
],
'decode mixed numeric/named entities' => [
"\u{0108}io bonas dans l'\u{00E9}cole!",
"Ĉio bonas dans l'école!",
],
'decode mixed complex entities' => [
"\u{0108}io bonas dans l'\u{00E9}cole! (mais pas Ĉio dans l'école)",
"Ĉio bonas dans l'école! (mais pas &#x108;io dans l'&eacute;cole)",
],
'Invalid ampersand' => [
'a & b',
'a & b',
],
'Invalid named entity' => [
'&foo;',
'&foo;',
],
'Invalid numbered entity (decimal)' => [
Constants::UTF8_REPLACEMENT,
"�",
],
'Invalid numbered entity (hex)' => [
Constants::UTF8_REPLACEMENT,
"�",
],
// These cases are also "very large" numbers, but they will
// truncate down to ASCII. So be careful.
'Invalid numbered entity w/ valid truncation (decimal)' => [
Constants::UTF8_REPLACEMENT,
"�",
],
'Invalid numbered entity w/ valid truncation (hex)' => [
Constants::UTF8_REPLACEMENT,
"�",
],
];
}
/**
* @dataProvider provideTagAttributesToDecode
*/
public function testDecodeTagAttributes( $expected, $attributes, $message = '' ) {
$this->assertSame( $expected,
Sanitizer::decodeTagAttributes( $attributes ),
$message
);
}
public static function provideTagAttributesToDecode() {
return [
[ [ 'foo' => 'bar' ], 'foo=bar', 'Unquoted attribute' ],
[ [ 'עברית' => 'bar' ], 'עברית=bar', 'Non-Latin attribute' ],
[ [ '६' => 'bar' ], '६=bar', 'Devanagari number' ],
[ [ '搭𨋢' => 'bar' ], '搭𨋢=bar', 'Non-BMP character' ],
[ [], 'ńgh=bar', 'Combining accent is not allowed' ],
[ [ 'foo' => 'bar' ], ' foo = bar ', 'Spaced attribute' ],
[ [ 'foo' => 'bar' ], 'foo="bar"', 'Double-quoted attribute' ],
[ [ 'foo' => 'bar' ], 'foo=\'bar\'', 'Single-quoted attribute' ],
[
[ 'foo' => 'bar', 'baz' => 'foo' ],
'foo=\'bar\' baz="foo"',
'Several attributes'
],
[
[ 'foo' => 'bar', 'baz' => 'foo' ],
'foo=\'bar\' baz="foo"',
'Several attributes'
],
[
[ 'foo' => 'bar', 'baz' => 'foo' ],
'foo=\'bar\' baz="foo"',
'Several attributes'
],
[ [ ':foo' => 'bar' ], ':foo=\'bar\'', 'Leading :' ],
[ [ '_foo' => 'bar' ], '_foo=\'bar\'', 'Leading _' ],
[ [ 'foo' => 'bar' ], 'Foo=\'bar\'', 'Leading capital' ],
[ [ 'foo' => 'BAR' ], 'FOO=BAR', 'Attribute keys are normalized to lowercase' ],
# Invalid beginning
[ [], '-foo=bar', 'Leading - is forbidden' ],
[ [], '.foo=bar', 'Leading . is forbidden' ],
[ [ 'foo-bar' => 'bar' ], 'foo-bar=bar', 'A - is allowed inside the attribute' ],
[ [ 'foo-' => 'bar' ], 'foo-=bar', 'A - is allowed inside the attribute' ],
[ [ 'foo.bar' => 'baz' ], 'foo.bar=baz', 'A . is allowed inside the attribute' ],
[ [ 'foo.' => 'baz' ], 'foo.=baz', 'A . is allowed as last character' ],
[ [ 'foo6' => 'baz' ], 'foo6=baz', 'Numbers are allowed' ],
# This bit is more relaxed than XML rules, but some extensions use
# it, like ProofreadPage (see T29539)
[ [ '1foo' => 'baz' ], '1foo=baz', 'Leading numbers are allowed' ],
[ [], 'foo$=baz', 'Symbols are not allowed' ],
[ [], 'foo@=baz', 'Symbols are not allowed' ],
[ [], 'foo~=baz', 'Symbols are not allowed' ],
[
[ 'foo' => '1[#^`*%w/(' ],
'foo=1[#^`*%w/(',
'All kind of characters are allowed as values'
],
[
[ 'foo' => '1[#^`*%\'w/(' ],
'foo="1[#^`*%\'w/("',
'Double quotes are allowed if quoted by single quotes'
],
[
[ 'foo' => '1[#^`*%"w/(' ],
'foo=\'1[#^`*%"w/(\'',
'Single quotes are allowed if quoted by double quotes'
],
[ [ 'foo' => '&"' ], 'foo=&"', 'Special chars can be provided as entities' ],
[ [ 'foo' => '&foobar;' ], 'foo=&foobar;', 'Entity-like items are accepted' ],
];
}
/**
* @dataProvider provideCssCommentsFixtures
*/
public function testCssCommentsChecking( $expected, $css, $message = '' ) {
$this->assertSame( $expected,
Sanitizer::checkCss( $css ),
$message
);
}
public static function provideCssCommentsFixtures() {
/** [ <expected>, <css>, [message] ] */
return [
// Valid comments spanning entire input
[ '/**/', '/**/' ],
[ '/* comment */', '/* comment */' ],
// Weird stuff
[ ' ', '/****/' ],
[ ' ', '/* /* */' ],
[ 'display: block;', "display:/* foo */block;" ],
[ 'display: block;', "display:\\2f\\2a foo \\2a\\2f block;",
'Backslash-escaped comments must be stripped (T30450)' ],
[ '', '/* unfinished comment structure',
'Remove anything after a comment-start token' ],
[ '', "\\2f\\2a unifinished comment'",
'Remove anything after a backslash-escaped comment-start token' ],
[ '/* insecure input */', 'width: expression(1+1);' ],
[ '/* insecure input */', 'background-image: image(asdf.png);' ],
[ '/* insecure input */', 'background-image: -webkit-image(asdf.png);' ],
[ '/* insecure input */', 'background-image: -moz-image(asdf.png);' ],
[ '/* insecure input */', 'background-image: image-set("asdf.png" 1x, "asdf.png" 2x);' ],
[
'/* insecure input */',
'background-image: -webkit-image-set("asdf.png" 1x, "asdf.png" 2x);'
],
[
'/* insecure input */',
'background-image: -moz-image-set("asdf.png" 1x, "asdf.png" 2x);'
],
[ '/* insecure input */', 'foo: attr( title, url );' ],
[ '/* insecure input */', 'foo: attr( title url );' ],
];
}
/**
* @dataProvider provideEscapeHtmlAllowEntities
*/
public function testEscapeHtmlAllowEntities( $expected, $html ) {
$this->assertSame(
$expected,
Sanitizer::escapeHtmlAllowEntities( $html )
);
}
public static function provideEscapeHtmlAllowEntities() {
return [
[ 'foo', 'foo' ],
[ 'a¡b', 'a¡b' ],
[ 'foo'bar', "foo'bar" ],
[ '<script>foo</script>', '<script>foo</script>' ],
[ '̸', "\u{0338}" ],
[ '̸', '̸' ],
];
}
/**
* @dataProvider provideIsReservedDataAttribute
*/
public function testIsReservedDataAttribute( $attr, $expected ) {
$this->assertSame( $expected, Sanitizer::isReservedDataAttribute( $attr ) );
}
public static function provideIsReservedDataAttribute() {
return [
[ 'foo', false ],
[ 'data', false ],
[ 'data-foo', false ],
[ 'data-mw', true ],
[ 'data-ooui', true ],
[ 'data-parsoid', true ],
[ 'data-mw-foo', true ],
[ 'data-ooui-foo', true ],
// could be false but this is how it's implemented currently
[ 'data-mwfoo', true ],
];
}
/**
* @covers \MediaWiki\Parser\RemexStripTagHandler
* @dataProvider provideStripAllTags
* @param string $input
* @param string $expected
*/
public function testStripAllTags( $input, $expected ) {
$this->assertSame( $expected, Sanitizer::stripAllTags( $input ) );
}
public static function provideStripAllTags() {
return [
[ '<p>Foo</p>', 'Foo' ],
[ '<p id="one">Foo</p><p id="two">Bar</p>', 'Foo Bar' ],
[ "<p>Foo</p>\n<p>Bar</p>", 'Foo Bar' ],
[ '<p>Hello <strong> world café</p>', 'Hello <strong> world café' ],
[
'<p><small data-foo=\'bar"<baz>quux\'><a href="./Foo">Bar</a></small> Whee!</p>',
'Bar Whee!'
],
[ '1<span class="<?php">2</span>3', '123' ],
[ '1<span class="<?">2</span>3', '123' ],
[ '<th>1</th><td>2</td>', '1 2' ],
[ '<style>.hello { display: block; }</style>', '' ],
[ 'Foo<style>p { color: red; }</style>Bar', 'FooBar' ],
[ '<script>var test = true;</script>', '' ],
];
}
}