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<?php
/**
* @file
* Definition of Drupal\filter\Tests\FilterUnitTest.
*/
namespace Drupal\filter\Tests;
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use Drupal\simpletest\DrupalUnitTestBase;
use stdClass;
/**
* Unit tests for core filters.
*/
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class FilterUnitTest extends DrupalUnitTestBase {
/**
* Modules to enable.
*
* @var array
*/
public static $modules = array('filter');
public static function getInfo() {
return array(
'name' => 'Filter module filters',
'description' => 'Tests Filter module filters individually.',
'group' => 'Filter',
);
}
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protected function setUp() {
parent::setUp();
config_install_default_config('module', 'system');
}
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* Tests the line break filter.
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*/
function testLineBreakFilter() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->callback = '_filter_autop';
// Since the line break filter naturally needs plenty of newlines in test
// strings and expectations, we're using "\n" instead of regular newlines
// here.
$tests = array(
// Single line breaks should be changed to <br /> tags, while paragraphs
// separated with double line breaks should be enclosed with <p></p> tags.
"aaa\nbbb\n\nccc" => array(
"<p>aaa<br />\nbbb</p>\n<p>ccc</p>" => TRUE,
),
// Skip contents of certain block tags entirely.
"<script>aaa\nbbb\n\nccc</script>
<style>aaa\nbbb\n\nccc</style>
<pre>aaa\nbbb\n\nccc</pre>
<object>aaa\nbbb\n\nccc</object>
<iframe>aaa\nbbb\n\nccc</iframe>
" => array(
"<script>aaa\nbbb\n\nccc</script>" => TRUE,
"<style>aaa\nbbb\n\nccc</style>" => TRUE,
"<pre>aaa\nbbb\n\nccc</pre>" => TRUE,
"<object>aaa\nbbb\n\nccc</object>" => TRUE,
"<iframe>aaa\nbbb\n\nccc</iframe>" => TRUE,
),
// Skip comments entirely.
"One. <!-- comment --> Two.\n<!--\nThree.\n-->\n" => array(
'<!-- comment -->' => TRUE,
"<!--\nThree.\n-->" => TRUE,
),
// Resulting HTML should produce matching paragraph tags.
'<p><div> </div></p>' => array(
"<p>\n<div> </div>\n</p>" => TRUE,
),
'<div><p> </p></div>' => array(
"<div>\n</div>" => TRUE,
),
'<blockquote><pre>aaa</pre></blockquote>' => array(
"<blockquote><pre>aaa</pre></blockquote>" => TRUE,
),
"<pre>aaa\nbbb\nccc</pre>\nddd\neee" => array(
"<pre>aaa\nbbb\nccc</pre>" => TRUE,
"<p>ddd<br />\neee</p>" => TRUE,
),
// Comments remain unchanged and subsequent lines/paragraphs are
// transformed normally.
"aaa<!--comment-->\n\nbbb\n\nccc\n\nddd<!--comment\nwith linebreak-->\n\neee\n\nfff" => array(
"<p>aaa</p>\n<!--comment--><p>\nbbb</p>\n<p>ccc</p>\n<p>ddd</p>" => TRUE,
"<!--comment\nwith linebreak--><p>\neee</p>\n<p>fff</p>" => TRUE,
),
// Check that a comment in a PRE will result that the text after
// the comment, but still in PRE, is not transformed.
"<pre>aaa\nbbb<!-- comment -->\n\nccc</pre>\nddd" => array(
"<pre>aaa\nbbb<!-- comment -->\n\nccc</pre>" => TRUE,
),
// Bug 810824, paragraphs were appearing around iframe tags.
"<iframe>aaa</iframe>\n\n" => array(
"<p><iframe>aaa</iframe></p>" => FALSE,
),
);
$this->assertFilteredString($filter, $tests);
// Very long string hitting PCRE limits.
$limit = max(ini_get('pcre.backtrack_limit'), ini_get('pcre.recursion_limit'));
$source = $this->randomName($limit);
$result = _filter_autop($source);
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$success = $this->assertEqual($result, '<p>' . $source . "</p>\n", 'Line break filter can process very long strings.');
if (!$success) {
$this->verbose("\n" . $source . "\n<hr />\n" . $result);
}
}
/**
* Tests limiting allowed tags and XSS prevention.
*
* XSS tests assume that script is disallowed by default and src is allowed
* by default, but on* and style attributes are disallowed.
*
* Script injection vectors mostly adopted from http://ha.ckers.org/xss.html.
*
* Relevant CVEs:
* - CVE-2002-1806, ~CVE-2005-0682, ~CVE-2005-2106, CVE-2005-3973,
* CVE-2006-1226 (= rev. 1.112?), CVE-2008-0273, CVE-2008-3740.
*/
function testFilterXSS() {
// Tag stripping, different ways to work around removal of HTML tags.
$f = filter_xss('<script>alert(0)</script>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping -- simple script without special characters.');
$f = filter_xss('<script src="http://www.example.com" />');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping -- empty script with source.');
$f = filter_xss('<ScRipt sRc=http://www.example.com/>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- varying case.');
$f = filter_xss("<script\nsrc\n=\nhttp://www.example.com/\n>");
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- multiline tag.');
$f = filter_xss('<script/a src=http://www.example.com/a.js></script>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- non whitespace character after tag name.');
$f = filter_xss('<script/src=http://www.example.com/a.js></script>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- no space between tag and attribute.');
// Null between < and tag name works at least with IE6.
$f = filter_xss("<\0scr\0ipt>alert(0)</script>");
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$this->assertNoNormalized($f, 'ipt', 'HTML tag stripping evasion -- breaking HTML with nulls.');
$f = filter_xss("<scrscriptipt src=http://www.example.com/a.js>");
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- filter just removing "script".');
$f = filter_xss('<<script>alert(0);//<</script>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- double opening brackets.');
$f = filter_xss('<script src=http://www.example.com/a.js?<b>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- no closing tag.');
// DRUPAL-SA-2008-047: This doesn't seem exploitable, but the filter should
// work consistently.
$f = filter_xss('<script>>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- double closing tag.');
$f = filter_xss('<script src=//www.example.com/.a>');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- no scheme or ending slash.');
$f = filter_xss('<script src=http://www.example.com/.a');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- no closing bracket.');
$f = filter_xss('<script src=http://www.example.com/ <');
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- opening instead of closing bracket.');
$f = filter_xss('<nosuchtag attribute="newScriptInjectionVector">');
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$this->assertNoNormalized($f, 'nosuchtag', 'HTML tag stripping evasion -- unknown tag.');
$f = filter_xss('<?xml:namespace ns="urn:schemas-microsoft-com:time">');
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$this->assertTrue(stripos($f, '<?xml') === FALSE, 'HTML tag stripping evasion -- starting with a question sign (processing instructions).');
$f = filter_xss('<t:set attributeName="innerHTML" to="<script defer>alert(0)</script>">');
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$this->assertNoNormalized($f, 't:set', 'HTML tag stripping evasion -- colon in the tag name (namespaces\' tricks).');
$f = filter_xss('<img """><script>alert(0)</script>', array('img'));
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- a malformed image tag.');
$f = filter_xss('<blockquote><script>alert(0)</script></blockquote>', array('blockquote'));
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- script in a blockqoute.');
$f = filter_xss("<!--[if true]><script>alert(0)</script><![endif]-->");
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$this->assertNoNormalized($f, 'script', 'HTML tag stripping evasion -- script within a comment.');
// Dangerous attributes removal.
$f = filter_xss('<p onmouseover="http://www.example.com/">', array('p'));
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$this->assertNoNormalized($f, 'onmouseover', 'HTML filter attributes removal -- events, no evasion.');
$f = filter_xss('<li style="list-style-image: url(javascript:alert(0))">', array('li'));
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$this->assertNoNormalized($f, 'style', 'HTML filter attributes removal -- style, no evasion.');
$f = filter_xss('<img onerror =alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'onerror', 'HTML filter attributes removal evasion -- spaces before equals sign.');
$f = filter_xss('<img onabort!#$%&()*~+-_.,:;?@[/|\]^`=alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'onabort', 'HTML filter attributes removal evasion -- non alphanumeric characters before equals sign.');
$f = filter_xss('<img oNmediAError=alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'onmediaerror', 'HTML filter attributes removal evasion -- varying case.');
// Works at least with IE6.
$f = filter_xss("<img o\0nfocus\0=alert(0)>", array('img'));
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$this->assertNoNormalized($f, 'focus', 'HTML filter attributes removal evasion -- breaking with nulls.');
// Only whitelisted scheme names allowed in attributes.
$f = filter_xss('<img src="javascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing -- no evasion.');
$f = filter_xss('<img src=javascript:alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- no quotes.');
// A bit like CVE-2006-0070.
$f = filter_xss('<img src="javascript:confirm(0)">', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- no alert ;)');
$f = filter_xss('<img src=`javascript:alert(0)`>', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- grave accents.');
$f = filter_xss('<img dynsrc="javascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing -- rare attribute.');
$f = filter_xss('<table background="javascript:alert(0)">', array('table'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing -- another tag.');
$f = filter_xss('<base href="javascript:alert(0);//">', array('base'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing -- one more attribute and tag.');
$f = filter_xss('<img src="jaVaSCriPt:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- varying case.');
$f = filter_xss('<img src=javascript:alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- UTF-8 decimal encoding.');
$f = filter_xss('<img src=javascript:alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- long UTF-8 encoding.');
$f = filter_xss('<img src=javascript:alert(0)>', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- UTF-8 hex encoding.');
$f = filter_xss("<img src=\"jav\tascript:alert(0)\">", array('img'));
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$this->assertNoNormalized($f, 'script', 'HTML scheme clearing evasion -- an embedded tab.');
$f = filter_xss('<img src="jav	ascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'script', 'HTML scheme clearing evasion -- an encoded, embedded tab.');
$f = filter_xss('<img src="jav
ascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'script', 'HTML scheme clearing evasion -- an encoded, embedded newline.');
// With 
 this test would fail, but the entity gets turned into
// &#xD;, so it's OK.
$f = filter_xss('<img src="jav
ascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'script', 'HTML scheme clearing evasion -- an encoded, embedded carriage return.');
$f = filter_xss("<img src=\"\n\n\nj\na\nva\ns\ncript:alert(0)\">", array('img'));
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$this->assertNoNormalized($f, 'cript', 'HTML scheme clearing evasion -- broken into many lines.');
$f = filter_xss("<img src=\"jav\0a\0\0cript:alert(0)\">", array('img'));
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$this->assertNoNormalized($f, 'cript', 'HTML scheme clearing evasion -- embedded nulls.');
$f = filter_xss('<img src="  javascript:alert(0)">', array('img'));
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$this->assertNoNormalized($f, 'javascript', 'HTML scheme clearing evasion -- spaces and metacharacters before scheme.');
$f = filter_xss('<img src="vbscript:msgbox(0)">', array('img'));
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$this->assertNoNormalized($f, 'vbscript', 'HTML scheme clearing evasion -- another scheme.');
$f = filter_xss('<img src="nosuchscheme:notice(0)">', array('img'));
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$this->assertNoNormalized($f, 'nosuchscheme', 'HTML scheme clearing evasion -- unknown scheme.');
// Netscape 4.x javascript entities.
$f = filter_xss('<br size="&{alert(0)}">', array('br'));
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$this->assertNoNormalized($f, 'alert', 'Netscape 4.x javascript entities.');
// DRUPAL-SA-2008-006: Invalid UTF-8, these only work as reflected XSS with
// Internet Explorer 6.
$f = filter_xss("<p arg=\"\xe0\">\" style=\"background-image: url(javascript:alert(0));\"\xe0<p>", array('p'));
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$this->assertNoNormalized($f, 'style', 'HTML filter -- invalid UTF-8.');
$f = filter_xss("\xc0aaa");
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$this->assertEqual($f, '', 'HTML filter -- overlong UTF-8 sequences.');
$f = filter_xss("Who's Online");
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$this->assertNormalized($f, "who's online", 'HTML filter -- html entity number');
$f = filter_xss("Who&#039;s Online");
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$this->assertNormalized($f, "who's online", 'HTML filter -- encoded html entity number');
$f = filter_xss("Who&amp;#039; Online");
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$this->assertNormalized($f, "who&#039; online", 'HTML filter -- double encoded html entity number');
}
/**
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* Tests filter settings, defaults, access restrictions and similar.
*
* @todo This is for functions like filter_filter and check_markup, whose
* functionality is not completely focused on filtering. Some ideas:
* restricting formats according to user permissions, proper cache
* handling, defaults -- allowed tags/attributes/protocols.
*
* @todo It is possible to add script, iframe etc. to allowed tags, but this
* makes HTML filter completely ineffective.
*
* @todo Class, id, name and xmlns should be added to disallowed attributes,
* or better a whitelist approach should be used for that too.
*/
function testHtmlFilter() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->settings = array(
'allowed_html' => '<a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>',
'filter_html_help' => 1,
'filter_html_nofollow' => 0,
);
// HTML filter is not able to secure some tags, these should never be
// allowed.
$f = _filter_html('<script />', $filter);
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$this->assertNoNormalized($f, 'script', 'HTML filter should always remove script tags.');
$f = _filter_html('<iframe />', $filter);
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$this->assertNoNormalized($f, 'iframe', 'HTML filter should always remove iframe tags.');
$f = _filter_html('<object />', $filter);
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$this->assertNoNormalized($f, 'object', 'HTML filter should always remove object tags.');
$f = _filter_html('<style />', $filter);
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$this->assertNoNormalized($f, 'style', 'HTML filter should always remove style tags.');
// Some tags make CSRF attacks easier, let the user take the risk herself.
$f = _filter_html('<img />', $filter);
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$this->assertNoNormalized($f, 'img', 'HTML filter should remove img tags on default.');
$f = _filter_html('<input />', $filter);
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$this->assertNoNormalized($f, 'img', 'HTML filter should remove input tags on default.');
// Filtering content of some attributes is infeasible, these shouldn't be
// allowed too.
$f = _filter_html('<p style="display: none;" />', $filter);
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$this->assertNoNormalized($f, 'style', 'HTML filter should remove style attribute on default.');
$f = _filter_html('<p onerror="alert(0);" />', $filter);
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$this->assertNoNormalized($f, 'onerror', 'HTML filter should remove on* attributes on default.');
$f = _filter_html('<code onerror> </code>', $filter);
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$this->assertNoNormalized($f, 'onerror', 'HTML filter should remove empty on* attributes on default.');
}
/**
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* Tests the spam deterrent.
*/
function testNoFollowFilter() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->settings = array(
'allowed_html' => '<a>',
'filter_html_help' => 1,
'filter_html_nofollow' => 1,
);
// Test if the rel="nofollow" attribute is added, even if we try to prevent
// it.
$f = _filter_html('<a href="http://www.example.com/">text</a>', $filter);
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$this->assertNormalized($f, 'rel="nofollow"', 'Spam deterrent -- no evasion.');
$f = _filter_html('<A href="http://www.example.com/">text</a>', $filter);
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$this->assertNormalized($f, 'rel="nofollow"', 'Spam deterrent evasion -- capital A.');
$f = _filter_html("<a/href=\"http://www.example.com/\">text</a>", $filter);
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$this->assertNormalized($f, 'rel="nofollow"', 'Spam deterrent evasion -- non whitespace character after tag name.');
$f = _filter_html("<\0a\0 href=\"http://www.example.com/\">text</a>", $filter);
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$this->assertNormalized($f, 'rel="nofollow"', 'Spam deterrent evasion -- some nulls.');
$f = _filter_html('<a href="http://www.example.com/" rel="follow">text</a>', $filter);
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$this->assertNoNormalized($f, 'rel="follow"', 'Spam deterrent evasion -- with rel set - rel="follow" removed.');
$this->assertNormalized($f, 'rel="nofollow"', 'Spam deterrent evasion -- with rel set - rel="nofollow" added.');
}
/**
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* Tests the loose, admin HTML filter.
*/
function testFilterXSSAdmin() {
// DRUPAL-SA-2008-044
$f = filter_xss_admin('<object />');
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$this->assertNoNormalized($f, 'object', 'Admin HTML filter -- should not allow object tag.');
$f = filter_xss_admin('<script />');
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$this->assertNoNormalized($f, 'script', 'Admin HTML filter -- should not allow script tag.');
$f = filter_xss_admin('<style /><iframe /><frame /><frameset /><meta /><link /><embed /><applet /><param /><layer />');
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$this->assertEqual($f, '', 'Admin HTML filter -- should never allow some tags.');
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}
/**
* Tests the HTML escaping filter.
*
* check_plain() is not tested here.
*/
function testHtmlEscapeFilter() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->callback = '_filter_html_escape';
$tests = array(
" One. <!-- \"comment\" --> Two'.\n<p>Three.</p>\n " => array(
"One. <!-- "comment" --> Two'.\n<p>Three.</p>" => TRUE,
' One.' => FALSE,
"</p>\n " => FALSE,
),
);
$this->assertFilteredString($filter, $tests);
}
/**
* Tests the URL filter.
*/
function testUrlFilter() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->callback = '_filter_url';
$filter->settings = array(
'filter_url_length' => 496,
);
// @todo Possible categories:
// - absolute, mail, partial
// - characters/encoding, surrounding markup, security
// Create a e-mail that is too long.
$long_email = str_repeat('a', 254) . '@example.com';
$too_long_email = str_repeat('b', 255) . '@example.com';
// Filter selection/pattern matching.
$tests = array(
// HTTP URLs.
'
http://example.com or www.example.com
' => array(
'<a href="http://example.com">http://example.com</a>' => TRUE,
'<a href="http://www.example.com">www.example.com</a>' => TRUE,
),
// MAILTO URLs.
'
person@example.com or mailto:person2@example.com or ' . $long_email . ' but not ' . $too_long_email . '
' => array(
'<a href="mailto:person@example.com">person@example.com</a>' => TRUE,
'<a href="mailto:person2@example.com">mailto:person2@example.com</a>' => TRUE,
'<a href="mailto:' . $long_email . '">' . $long_email . '</a>' => TRUE,
'<a href="mailto:' . $too_long_email . '">' . $too_long_email . '</a>' => FALSE,
),
// URI parts and special characters.
'
http://trailingslash.com/ or www.trailingslash.com/
http://host.com/some/path?query=foo&bar[baz]=beer#fragment or www.host.com/some/path?query=foo&bar[baz]=beer#fragment
http://twitter.com/#!/example/status/22376963142324226
ftp://user:pass@ftp.example.com/~home/dir1
sftp://user@nonstandardport:222/dir
ssh://192.168.0.100/srv/git/drupal.git
' => array(
'<a href="http://trailingslash.com/">http://trailingslash.com/</a>' => TRUE,
'<a href="http://www.trailingslash.com/">www.trailingslash.com/</a>' => TRUE,
'<a href="http://host.com/some/path?query=foo&bar[baz]=beer#fragment">http://host.com/some/path?query=foo&bar[baz]=beer#fragment</a>' => TRUE,
'<a href="http://www.host.com/some/path?query=foo&bar[baz]=beer#fragment">www.host.com/some/path?query=foo&bar[baz]=beer#fragment</a>' => TRUE,
'<a href="http://twitter.com/#!/example/status/22376963142324226">http://twitter.com/#!/example/status/22376963142324226</a>' => TRUE,
'<a href="ftp://user:pass@ftp.example.com/~home/dir1">ftp://user:pass@ftp.example.com/~home/dir1</a>' => TRUE,
'<a href="sftp://user@nonstandardport:222/dir">sftp://user@nonstandardport:222/dir</a>' => TRUE,
'<a href="ssh://192.168.0.100/srv/git/drupal.git">ssh://192.168.0.100/srv/git/drupal.git</a>' => TRUE,
),
// Encoding.
'
http://ampersand.com/?a=1&b=2
http://encoded.com/?a=1&b=2
' => array(
'<a href="http://ampersand.com/?a=1&b=2">http://ampersand.com/?a=1&b=2</a>' => TRUE,
'<a href="http://encoded.com/?a=1&b=2">http://encoded.com/?a=1&b=2</a>' => TRUE,
),
// Domain name length.
'
www.ex.ex or www.example.example or www.toolongdomainexampledomainexampledomainexampledomainexampledomain or
me@me.tv
' => array(
'<a href="http://www.ex.ex">www.ex.ex</a>' => TRUE,
'<a href="http://www.example.example">www.example.example</a>' => TRUE,
'http://www.toolong' => FALSE,
'<a href="mailto:me@me.tv">me@me.tv</a>' => TRUE,
),
// Absolute URL protocols.
// The list to test is found in the beginning of _filter_url() at
catch
committed
// $protocols = config('system.filter')->get('protocols')... (approx line 1555).
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'
https://example.com,
ftp://ftp.example.com,
news://example.net,
telnet://example,
irc://example.host,
ssh://odd.geek,
sftp://secure.host?,
webcal://calendar,
rtsp://127.0.0.1,
not foo://disallowed.com.
' => array(
'href="https://example.com"' => TRUE,
'href="ftp://ftp.example.com"' => TRUE,
'href="news://example.net"' => TRUE,
'href="telnet://example"' => TRUE,
'href="irc://example.host"' => TRUE,
'href="ssh://odd.geek"' => TRUE,
'href="sftp://secure.host"' => TRUE,
'href="webcal://calendar"' => TRUE,
'href="rtsp://127.0.0.1"' => TRUE,
'href="foo://disallowed.com"' => FALSE,
'not foo://disallowed.com.' => TRUE,
),
);
$this->assertFilteredString($filter, $tests);
// Surrounding text/punctuation.
$tests = array(
'
Partial URL with trailing period www.partial.com.
E-mail with trailing comma person@example.com,
Absolute URL with trailing question http://www.absolute.com?
Query string with trailing exclamation www.query.com/index.php?a=!
Partial URL with 3 trailing www.partial.periods...
E-mail with 3 trailing exclamations@example.com!!!
Absolute URL and query string with 2 different punctuation characters (http://www.example.com/q=abc).
' => array(
'period <a href="http://www.partial.com">www.partial.com</a>.' => TRUE,
'comma <a href="mailto:person@example.com">person@example.com</a>,' => TRUE,
'question <a href="http://www.absolute.com">http://www.absolute.com</a>?' => TRUE,
'exclamation <a href="http://www.query.com/index.php?a=">www.query.com/index.php?a=</a>!' => TRUE,
'trailing <a href="http://www.partial.periods">www.partial.periods</a>...' => TRUE,
'trailing <a href="mailto:exclamations@example.com">exclamations@example.com</a>!!!' => TRUE,
'characters (<a href="http://www.example.com/q=abc">http://www.example.com/q=abc</a>).' => TRUE,
),
'
(www.parenthesis.com/dir?a=1&b=2#a)
' => array(
'(<a href="http://www.parenthesis.com/dir?a=1&b=2#a">www.parenthesis.com/dir?a=1&b=2#a</a>)' => TRUE,
),
);
$this->assertFilteredString($filter, $tests);
// Surrounding markup.
$tests = array(
'
<p xmlns="www.namespace.com" />
<p xmlns="http://namespace.com">
An <a href="http://example.com" title="Read more at www.example.info...">anchor</a>.
</p>
' => array(
'<p xmlns="www.namespace.com" />' => TRUE,
'<p xmlns="http://namespace.com">' => TRUE,
'href="http://www.namespace.com"' => FALSE,
'href="http://namespace.com"' => FALSE,
'An <a href="http://example.com" title="Read more at www.example.info...">anchor</a>.' => TRUE,
),
'
Not <a href="foo">www.relative.com</a> or <a href="http://absolute.com">www.absolute.com</a>
but <strong>http://www.strong.net</strong> or <em>www.emphasis.info</em>
' => array(
'<a href="foo">www.relative.com</a>' => TRUE,
'href="http://www.relative.com"' => FALSE,
'<a href="http://absolute.com">www.absolute.com</a>' => TRUE,
'<strong><a href="http://www.strong.net">http://www.strong.net</a></strong>' => TRUE,
'<em><a href="http://www.emphasis.info">www.emphasis.info</a></em>' => TRUE,
),
'
Test <code>using www.example.com the code tag</code>.
' => array(
'href' => FALSE,
'http' => FALSE,
),
'
Intro.
<blockquote>
Quoted text linking to www.example.com, written by person@example.com, originating from http://origin.example.com. <code>@see www.usage.example.com or <em>www.example.info</em> bla bla</code>.
</blockquote>
Outro.
' => array(
'href="http://www.example.com"' => TRUE,
'href="mailto:person@example.com"' => TRUE,
'href="http://origin.example.com"' => TRUE,
'http://www.usage.example.com' => FALSE,
'http://www.example.info' => FALSE,
'Intro.' => TRUE,
'Outro.' => TRUE,
),
'
Unknown tag <x>containing x and www.example.com</x>? And a tag <pooh>beginning with p and containing www.example.pooh with p?</pooh>
' => array(
'href="http://www.example.com"' => TRUE,
'href="http://www.example.pooh"' => TRUE,
),
'
<p>Test <br/>: This is a www.example17.com example <strong>with</strong> various http://www.example18.com tags. *<br/>
It is important www.example19.com to *<br/>test different URLs and http://www.example20.com in the same paragraph. *<br>
HTML www.example21.com soup by person@example22.com can litererally http://www.example23.com contain *img*<img> anything. Just a www.example24.com with http://www.example25.com thrown in. www.example26.com from person@example27.com with extra http://www.example28.com.
' => array(
'href="http://www.example17.com"' => TRUE,
'href="http://www.example18.com"' => TRUE,
'href="http://www.example19.com"' => TRUE,
'href="http://www.example20.com"' => TRUE,
'href="http://www.example21.com"' => TRUE,
'href="mailto:person@example22.com"' => TRUE,
'href="http://www.example23.com"' => TRUE,
'href="http://www.example24.com"' => TRUE,
'href="http://www.example25.com"' => TRUE,
'href="http://www.example26.com"' => TRUE,
'href="mailto:person@example27.com"' => TRUE,
'href="http://www.example28.com"' => TRUE,
),
'
<script>
<!--
// @see www.example.com
var exampleurl = "http://example.net";
-->
<!--//--><![CDATA[//><!--
// @see www.example.com
var exampleurl = "http://example.net";
//--><!]]>
</script>
' => array(
'href="http://www.example.com"' => FALSE,
'href="http://example.net"' => FALSE,
),
'
<style>body {
background: url(http://example.com/pixel.gif);
}</style>
' => array(
'href' => FALSE,
),
'
<!-- Skip any URLs like www.example.com in comments -->
' => array(
'href' => FALSE,
),
'
<!-- Skip any URLs like
www.example.com with a newline in comments -->
' => array(
'href' => FALSE,
),
'
<!-- Skip any URLs like www.comment.com in comments. <p>Also ignore http://commented.out/markup.</p> -->
' => array(
'href' => FALSE,
),
'
<dl>
<dt>www.example.com</dt>
<dd>http://example.com</dd>
<dd>person@example.com</dd>
<dt>Check www.example.net</dt>
<dd>Some text around http://www.example.info by person@example.info?</dd>
</dl>
' => array(
'href="http://www.example.com"' => TRUE,
'href="http://example.com"' => TRUE,
'href="mailto:person@example.com"' => TRUE,
'href="http://www.example.net"' => TRUE,
'href="http://www.example.info"' => TRUE,
'href="mailto:person@example.info"' => TRUE,
),
'
<div>www.div.com</div>
<ul>
<li>http://listitem.com</li>
<li class="odd">www.class.listitem.com</li>
</ul>
' => array(
'<div><a href="http://www.div.com">www.div.com</a></div>' => TRUE,
'<li><a href="http://listitem.com">http://listitem.com</a></li>' => TRUE,
'<li class="odd"><a href="http://www.class.listitem.com">www.class.listitem.com</a></li>' => TRUE,
),
);
$this->assertFilteredString($filter, $tests);
// URL trimming.
$filter->settings['filter_url_length'] = 20;
$tests = array(
'www.trimmed.com/d/ff.ext?a=1&b=2#a1' => array(
'<a href="http://www.trimmed.com/d/ff.ext?a=1&b=2#a1">www.trimmed.com/d/ff...</a>' => TRUE,
),
);
$this->assertFilteredString($filter, $tests);
}
/**
* Asserts multiple filter output expectations for multiple input strings.
*
* @param $filter
* A input filter object.
* @param $tests
* An associative array, whereas each key is an arbitrary input string and
* each value is again an associative array whose keys are filter output
* strings and whose values are Booleans indicating whether the output is
* expected or not.
*
* For example:
* @code
* $tests = array(
* 'Input string' => array(
* '<p>Input string</p>' => TRUE,
* 'Input string<br' => FALSE,
* ),
* );
* @endcode
*/
function assertFilteredString($filter, $tests) {
foreach ($tests as $source => $tasks) {
$function = $filter->callback;
$result = $function($source, $filter);
foreach ($tasks as $value => $is_expected) {
// Not using assertIdentical, since combination with strpos() is hard to grok.
if ($is_expected) {
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$success = $this->assertTrue(strpos($result, $value) !== FALSE, format_string('@source: @value found.', array(
'@source' => var_export($source, TRUE),
'@value' => var_export($value, TRUE),
)));
}
else {
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$success = $this->assertTrue(strpos($result, $value) === FALSE, format_string('@source: @value not found.', array(
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'@source' => var_export($source, TRUE),
'@value' => var_export($value, TRUE),
)));
}
if (!$success) {
$this->verbose('Source:<pre>' . check_plain(var_export($source, TRUE)) . '</pre>'
. '<hr />' . 'Result:<pre>' . check_plain(var_export($result, TRUE)) . '</pre>'
. '<hr />' . ($is_expected ? 'Expected:' : 'Not expected:')
. '<pre>' . check_plain(var_export($value, TRUE)) . '</pre>'
);
}
}
}
}
/**
* Tests URL filter on longer content.
*
* Filters based on regular expressions should also be tested with a more
* complex content than just isolated test lines.
* The most common errors are:
* - accidental '*' (greedy) match instead of '*?' (minimal) match.
* - only matching first occurrence instead of all.
* - newlines not matching '.*'.
*
* This test covers:
* - Document with multiple newlines and paragraphs (two newlines).
* - Mix of several HTML tags, invalid non-HTML tags, tags to ignore and HTML
* comments.
* - Empty HTML tags (BR, IMG).
* - Mix of absolute and partial URLs, and e-mail addresses in one content.
*/
function testUrlFilterContent() {
// Setup dummy filter object.
$filter = new stdClass();
$filter->settings = array(
'filter_url_length' => 496,
);
$path = drupal_get_path('module', 'filter') . '/tests';
$input = file_get_contents($path . '/filter.url-input.txt');
$expected = file_get_contents($path . '/filter.url-output.txt');
$result = _filter_url($input, $filter);
$this->assertIdentical($result, $expected, 'Complex HTML document was correctly processed.');
}
/**
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* Tests the HTML corrector filter.
*
* @todo This test could really use some validity checking function.
*/
function testHtmlCorrectorFilter() {
// Tag closing.
$f = _filter_htmlcorrector('<p>text');
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$this->assertEqual($f, '<p>text</p>', 'HTML corrector -- tag closing at the end of input.');
$f = _filter_htmlcorrector('<p>text<p><p>text');
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$this->assertEqual($f, '<p>text</p><p></p><p>text</p>', 'HTML corrector -- tag closing.');
$f = _filter_htmlcorrector("<ul><li>e1<li>e2");
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$this->assertEqual($f, "<ul><li>e1</li><li>e2</li></ul>", 'HTML corrector -- unclosed list tags.');
$f = _filter_htmlcorrector('<div id="d">content');
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$this->assertEqual($f, '<div id="d">content</div>', 'HTML corrector -- unclosed tag with attribute.');
// XHTML slash for empty elements.
$f = _filter_htmlcorrector('<hr><br>');
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$this->assertEqual($f, '<hr /><br />', 'HTML corrector -- XHTML closing slash.');
$f = _filter_htmlcorrector('<P>test</P>');
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$this->assertEqual($f, '<p>test</p>', 'HTML corrector -- Convert uppercased tags to proper lowercased ones.');
$f = _filter_htmlcorrector('<P>test</p>');
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$this->assertEqual($f, '<p>test</p>', 'HTML corrector -- Convert uppercased tags to proper lowercased ones.');
$f = _filter_htmlcorrector('test<hr />');
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$this->assertEqual($f, 'test<hr />', 'HTML corrector -- Let proper XHTML pass through.');
$f = _filter_htmlcorrector('test<hr/>');
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$this->assertEqual($f, 'test<hr />', 'HTML corrector -- Let proper XHTML pass through, but ensure there is a single space before the closing slash.');
$f = _filter_htmlcorrector('test<hr />');
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$this->assertEqual($f, 'test<hr />', 'HTML corrector -- Let proper XHTML pass through, but ensure there are not too many spaces before the closing slash.');
$f = _filter_htmlcorrector('<span class="test" />');
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$this->assertEqual($f, '<span class="test"></span>', 'HTML corrector -- Convert XHTML that is properly formed but that would not be compatible with typical HTML user agents.');
$f = _filter_htmlcorrector('test1<br class="test">test2');
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$this->assertEqual($f, 'test1<br class="test" />test2', 'HTML corrector -- Automatically close single tags.');
$f = _filter_htmlcorrector('line1<hr>line2');
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$this->assertEqual($f, 'line1<hr />line2', 'HTML corrector -- Automatically close single tags.');
$f = _filter_htmlcorrector('line1<HR>line2');
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$this->assertEqual($f, 'line1<hr />line2', 'HTML corrector -- Automatically close single tags.');
$f = _filter_htmlcorrector('<img src="http://example.com/test.jpg">test</img>');
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$this->assertEqual($f, '<img src="http://example.com/test.jpg" />test', 'HTML corrector -- Automatically close single tags.');
$f = _filter_htmlcorrector('<br></br>');
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$this->assertEqual($f, '<br />', "HTML corrector -- Transform empty tags to a single closed tag if the tag's content model is EMPTY.");
$f = _filter_htmlcorrector('<div></div>');
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$this->assertEqual($f, '<div></div>', "HTML corrector -- Do not transform empty tags to a single closed tag if the tag's content model is not EMPTY.");
$f = _filter_htmlcorrector('<p>line1<br/><hr/>line2</p>');
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$this->assertEqual($f, '<p>line1<br /></p><hr />line2', 'HTML corrector -- Move non-inline elements outside of inline containers.');
$f = _filter_htmlcorrector('<p>line1<div>line2</div></p>');
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$this->assertEqual($f, '<p>line1</p><div>line2</div>', 'HTML corrector -- Move non-inline elements outside of inline containers.');
$f = _filter_htmlcorrector('<p>test<p>test</p>\n');
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$this->assertEqual($f, '<p>test</p><p>test</p>\n', 'HTML corrector -- Auto-close improperly nested tags.');
$f = _filter_htmlcorrector('<p>Line1<br><STRONG>bold stuff</b>');
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$this->assertEqual($f, '<p>Line1<br /><strong>bold stuff</strong></p>', 'HTML corrector -- Properly close unclosed tags, and remove useless closing tags.');
$f = _filter_htmlcorrector('test <!-- this is a comment -->');
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$this->assertEqual($f, 'test <!-- this is a comment -->', 'HTML corrector -- Do not touch HTML comments.');
$f = _filter_htmlcorrector('test <!--this is a comment-->');
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$this->assertEqual($f, 'test <!--this is a comment-->', 'HTML corrector -- Do not touch HTML comments.');
$f = _filter_htmlcorrector('test <!-- comment <p>another
<strong>multiple</strong> line
comment</p> -->');
$this->assertEqual($f, 'test <!-- comment <p>another
<strong>multiple</strong> line
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comment</p> -->', 'HTML corrector -- Do not touch HTML comments.');
$f = _filter_htmlcorrector('test <!-- comment <p>another comment</p> -->');
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$this->assertEqual($f, 'test <!-- comment <p>another comment</p> -->', 'HTML corrector -- Do not touch HTML comments.');
$f = _filter_htmlcorrector('test <!--break-->');
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$this->assertEqual($f, 'test <!--break-->', 'HTML corrector -- Do not touch HTML comments.');
$f = _filter_htmlcorrector('<p>test\n</p>\n');
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$this->assertEqual($f, '<p>test\n</p>\n', 'HTML corrector -- New-lines are accepted and kept as-is.');
$f = _filter_htmlcorrector('<p>دروبال');
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$this->assertEqual($f, '<p>دروبال</p>', 'HTML corrector -- Encoding is correctly kept.');
$f = _filter_htmlcorrector('<script>alert("test")</script>');
$this->assertEqual($f, '<script>
<!--//--><![CDATA[// ><!--
alert("test")
//--><!]]>
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</script>', 'HTML corrector -- CDATA added to script element');
$f = _filter_htmlcorrector('<p><script>alert("test")</script></p>');
$this->assertEqual($f, '<p><script>
<!--//--><![CDATA[// ><!--
alert("test")
//--><!]]>
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</script></p>', 'HTML corrector -- CDATA added to a nested script element');
$f = _filter_htmlcorrector('<p><style> /* Styling */ body {color:red}</style></p>');
$this->assertEqual($f, '<p><style>
<!--/*--><![CDATA[/* ><!--*/
/* Styling */ body {color:red}
/*--><!]]>*/
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</style></p>', 'HTML corrector -- CDATA added to a style element.');
$filtered_data = _filter_htmlcorrector('<p><style>
/*<![CDATA[*/
/* Styling */
body {color:red}
/*]]>*/
</style></p>');
$this->assertEqual($filtered_data, '<p><style>
<!--/*--><![CDATA[/* ><!--*/
/*<![CDATA[*/
/* Styling */
body {color:red}
/*]]]]><![CDATA[>*/
/*--><!]]>*/
</style></p>',
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format_string('HTML corrector -- Existing cdata section @pattern_name properly escaped', array('@pattern_name' => '/*<![CDATA[*/'))
);
$filtered_data = _filter_htmlcorrector('<p><style>
<!--/*--><![CDATA[/* ><!--*/
/* Styling */
body {color:red}
/*--><!]]>*/
</style></p>');
$this->assertEqual($filtered_data, '<p><style>
<!--/*--><![CDATA[/* ><!--*/
<!--/*--><![CDATA[/* ><!--*/
/* Styling */
body {color:red}
/*--><!]]]]><![CDATA[>*/
/*--><!]]>*/
</style></p>',
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format_string('HTML corrector -- Existing cdata section @pattern_name properly escaped', array('@pattern_name' => '<!--/*--><![CDATA[/* ><!--*/'))
$filtered_data = _filter_htmlcorrector('<p><script>
<!--//--><![CDATA[// ><!--
alert("test");
//--><!]]>
</script></p>');
$this->assertEqual($filtered_data, '<p><script>
<!--//--><![CDATA[// ><!--
<!--//--><![CDATA[// ><!--
alert("test");
//--><!]]]]><![CDATA[>
//--><!]]>
</script></p>',
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format_string('HTML corrector -- Existing cdata section @pattern_name properly escaped', array('@pattern_name' => '<!--//--><![CDATA[// ><!--'))
$filtered_data = _filter_htmlcorrector('<p><script>
// <![CDATA[
alert("test");
// ]]>
</script></p>');
$this->assertEqual($filtered_data, '<p><script>
<!--//--><![CDATA[// ><!--
// <![CDATA[
alert("test");
// ]]]]><![CDATA[>
//--><!]]>
</script></p>',
Jennifer Hodgdon
committed
format_string('HTML corrector -- Existing cdata section @pattern_name properly escaped', array('@pattern_name' => '// <![CDATA['))
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);
}
/**
* Asserts that a text transformed to lowercase with HTML entities decoded does contains a given string.
*
* Otherwise fails the test with a given message, similar to all the
* SimpleTest assert* functions.
*
* Note that this does not remove nulls, new lines and other characters that
* could be used to obscure a tag or an attribute name.
*
* @param $haystack
* Text to look in.
* @param $needle
* Lowercase, plain text to look for.
* @param $message
* Message to display if failed.
* @param $group
* The group this message belongs to, defaults to 'Other'.
* @return
* TRUE on pass, FALSE on fail.
*/
function assertNormalized($haystack, $needle, $message = '', $group = 'Other') {
return $this->assertTrue(strpos(strtolower(decode_entities($haystack)), $needle) !== FALSE, $message, $group);
}
/**
* Asserts that text transformed to lowercase with HTML entities decoded does not contain a given string.
*
* Otherwise fails the test with a given message, similar to all the
* SimpleTest assert* functions.
*
* Note that this does not remove nulls, new lines, and other character that