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htmlpurifier/tests/HTMLPurifier/AttrDef/URITest.php
Edward Z. Yang e76f4b45d0 Dramatically rewrite null host URI handling.
Basically, browsers don't parse what should be valid URIs correctly, so
we have to go through some backbends to accomodate them.  Specifically,
for browseable URIs, the following URIs have unintended behavior:

    - ///example.com
    - http:/example.com
    - http:///example.com

Furthermore, if the path begins with //, modifying these URLs must
be done with care, as if you remove the host-name component, the
parse tree changes.

I've modified the engine to follow correct URI semantics as much
as possible while outputting browser compatible code, and invalidate
the URI in cases where we can't deal.  There has been a refactoring
of URIScheme so that this important check is always performed,
introducing a new member variable allow_empty_host which is true
on data, file, mailto and news schemes.

This also fixes bypass bugs on URI.Munge.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
2011-01-25 18:56:46 +00:00

147 lines
4.8 KiB
PHP

<?php
/**
* @todo Aim for complete code coverage with mocks
*/
class HTMLPurifier_AttrDef_URITest extends HTMLPurifier_AttrDefHarness
{
function setUp() {
$this->def = new HTMLPurifier_AttrDef_URI();
parent::setUp();
}
function testIntegration() {
$this->assertDef('http://www.google.com/');
$this->assertDef('http:', '');
$this->assertDef('http:/foo', '/foo');
$this->assertDef('javascript:bad_stuff();', false);
$this->assertDef('ftp://www.example.com/');
$this->assertDef('news:rec.alt');
$this->assertDef('nntp://news.example.com/324234');
$this->assertDef('mailto:bob@example.com');
}
function testIntegrationWithPercentEncoder() {
$this->assertDef(
'http://www.example.com/%56%fc%GJ%5%FC',
'http://www.example.com/V%FC%25GJ%255%FC'
);
}
function testPercentEncoding() {
$this->assertDef(
'http:colon:mercenary',
'colon%3Amercenary'
);
}
function testPercentEncodingPreserve() {
$this->assertDef(
'http://www.example.com/abcABC123-_.!~*()\''
);
}
function testEmbeds() {
$this->def = new HTMLPurifier_AttrDef_URI(true);
$this->assertDef('http://sub.example.com/alas?foo=asd');
$this->assertDef('mailto:foo@example.com', false);
}
function testConfigMunge() {
$this->config->set('URI.Munge', 'http://www.google.com/url?q=%s');
$this->assertDef(
'http://www.example.com/',
'http://www.google.com/url?q=http%3A%2F%2Fwww.example.com%2F'
);
$this->assertDef('index.html');
$this->assertDef('javascript:foobar();', false);
}
function testDefaultSchemeRemovedInBlank() {
$this->assertDef('http:', '');
}
function testDefaultSchemeRemovedInRelativeURI() {
$this->assertDef('http:/foo/bar', '/foo/bar');
}
function testDefaultSchemeNotRemovedInAbsoluteURI() {
$this->assertDef('http://example.com/foo/bar');
}
function testAltSchemeNotRemoved() {
$this->assertDef('mailto:this-looks-like-a-path@example.com');
}
function testResolveNullSchemeAmbiguity() {
$this->assertDef('///foo', '/foo');
}
function testResolveNullSchemeDoubleAmbiguity() {
$this->config->set('URI.Host', 'example.com');
$this->assertDef('////foo', '//example.com//foo');
}
function testURIDefinitionValidation() {
$parser = new HTMLPurifier_URIParser();
$uri = $parser->parse('http://example.com');
$this->config->set('URI.DefinitionID', 'HTMLPurifier_AttrDef_URITest->testURIDefinitionValidation');
generate_mock_once('HTMLPurifier_URIDefinition');
$uri_def = new HTMLPurifier_URIDefinitionMock();
$uri_def->expectOnce('filter', array($uri, '*', '*'));
$uri_def->setReturnValue('filter', true, array($uri, '*', '*'));
$uri_def->expectOnce('postFilter', array($uri, '*', '*'));
$uri_def->setReturnValue('postFilter', true, array($uri, '*', '*'));
$uri_def->setup = true;
// Since definitions are no longer passed by reference, we need
// to muck around with the cache to insert our mock. This is
// technically a little bad, since the cache shouldn't change
// behavior, but I don't feel too good about letting users
// overload entire definitions.
generate_mock_once('HTMLPurifier_DefinitionCache');
$cache_mock = new HTMLPurifier_DefinitionCacheMock();
$cache_mock->setReturnValue('get', $uri_def);
generate_mock_once('HTMLPurifier_DefinitionCacheFactory');
$factory_mock = new HTMLPurifier_DefinitionCacheFactoryMock();
$old = HTMLPurifier_DefinitionCacheFactory::instance();
HTMLPurifier_DefinitionCacheFactory::instance($factory_mock);
$factory_mock->setReturnValue('create', $cache_mock);
$this->assertDef('http://example.com');
HTMLPurifier_DefinitionCacheFactory::instance($old);
}
function test_make() {
$factory = new HTMLPurifier_AttrDef_URI();
$def = $factory->make('');
$def2 = new HTMLPurifier_AttrDef_URI();
$this->assertIdentical($def, $def2);
$def = $factory->make('embedded');
$def2 = new HTMLPurifier_AttrDef_URI(true);
$this->assertIdentical($def, $def2);
}
/*
function test_validate_configWhitelist() {
$this->config->set('URI.HostPolicy', 'DenyAll');
$this->config->set('URI.HostWhitelist', array(null, 'google.com'));
$this->assertDef('http://example.com/fo/google.com', false);
$this->assertDef('server.txt');
$this->assertDef('ftp://www.google.com/?t=a');
$this->assertDef('http://google.com.tricky.spamsite.net', false);
}
*/
}
// vim: et sw=4 sts=4