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path: root/engine/tests/regression/trac_bugs.php
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<?php
/**
 * Elgg Regression Tests -- GitHub Bugfixes
 * Any bugfixes from GitHub that require testing belong here.
 *
 * @package Elgg
 * @subpackage Test
 */
class ElggCoreRegressionBugsTest extends ElggCoreUnitTest {

	/**
	 * Called before each test object.
	 */
	public function __construct() {
		$this->ia = elgg_set_ignore_access(TRUE);
		parent::__construct();

		// all __construct() code should come after here
	}

	/**
	 * Called before each test method.
	 */
	public function setUp() {

	}

	/**
	 * Called after each test method.
	 */
	public function tearDown() {
		// do not allow SimpleTest to interpret Elgg notices as exceptions
		$this->swallowErrors();
	}

	/**
	 * Called after each test object.
	 */
	public function __destruct() {
		elgg_set_ignore_access($this->ia);
		// all __destruct() code should go above here
		parent::__destruct();
	}

	/**
	 * #1558
	 */
	public function testElggObjectDeleteAnnotations() {
		$this->entity = new ElggObject();
		$guid = $this->entity->save();

		$this->entity->annotate('test', 'hello', ACCESS_PUBLIC);

		$this->entity->deleteAnnotations('does not exist');

		$num = $this->entity->countAnnotations('test');

		//$this->assertIdentical($num, 1);
		$this->assertEqual($num, 1);

		// clean up
		$this->entity->delete();
	}

	/**
	 * #2063 - get_resized_image_from_existing_file() fails asked for image larger than selection and not scaling an image up
	 * Test get_image_resize_parameters().
	 */
	public function testElggResizeImage() {
		$orig_width = 100;
		$orig_height = 150;

		// test against selection > max
		$options = array(
			'maxwidth' => 50,
			'maxheight' => 50,
			'square' => TRUE,
			'upscale' => FALSE,

			'x1' => 25,
			'y1' => 75,
			'x2' => 100,
			'y2' => 150
		);

		// should get back the same x/y offset == x1, y1 and an image of 50x50
		$params = get_image_resize_parameters($orig_width, $orig_height, $options);

		$this->assertEqual($params['newwidth'], $options['maxwidth']);
		$this->assertEqual($params['newheight'], $options['maxheight']);
		$this->assertEqual($params['xoffset'], $options['x1']);
		$this->assertEqual($params['yoffset'], $options['y1']);

		// test against selection < max
		$options = array(
			'maxwidth' => 50,
			'maxheight' => 50,
			'square' => TRUE,
			'upscale' => FALSE,

			'x1' => 75,
			'y1' => 125,
			'x2' => 100,
			'y2' => 150
		);
		
		// should get back the same x/y offset == x1, y1 and an image of 25x25 because no upscale
		$params = get_image_resize_parameters($orig_width, $orig_height, $options);

		$this->assertEqual($params['newwidth'], 25);
		$this->assertEqual($params['newheight'], 25);
		$this->assertEqual($params['xoffset'], $options['x1']);
		$this->assertEqual($params['yoffset'], $options['y1']);
	}

	// #3722 Check canEdit() works for contains regardless of groups
	function test_can_write_to_container() {
		$user = new ElggUser();
		$user->username = 'test_user_' . rand();
		$user->name = 'test_user_name_' . rand();
		$user->email = 'test@user.net';
		$user->container_guid = 0;
		$user->owner_guid = 0;
		$user->save();

		$object = new ElggObject();
		$object->save();

		$group = new ElggGroup();
		$group->save();
		
		// disable access overrides because we're admin.
		$ia = elgg_set_ignore_access(false);

		$this->assertFalse(can_write_to_container($user->guid, $object->guid));
		
		global $elgg_test_user;
		$elgg_test_user = $user;

		// register hook to allow access
		function can_write_to_container_test_hook($hook, $type, $value, $params) {
			global $elgg_test_user;

			if ($params['user']->getGUID() == $elgg_test_user->getGUID()) {
				return true;
			}
		}
		
		elgg_register_plugin_hook_handler('container_permissions_check', 'all', 'can_write_to_container_test_hook');
		$this->assertTrue(can_write_to_container($user->guid, $object->guid));
		elgg_unregister_plugin_hook_handler('container_permissions_check', 'all', 'can_write_to_container_test_hook');

		$this->assertFalse(can_write_to_container($user->guid, $group->guid));
		$group->join($user);
		$this->assertTrue(can_write_to_container($user->guid, $group->guid));

		elgg_set_ignore_access($ia);

		$user->delete();
		$object->delete();
		$group->delete();
	}

	function test_db_shutdown_links() {
		global $DB_DELAYED_QUERIES, $test_results;
		$DB_DELAYED_QUERIES = array();

		function test_delayed_results($results) {
			global $test_results;
			$test_results = $results;
		}

		$q = 'SELECT 1 as test';

		$links = array('read', 'write', get_db_link('read'), get_db_link('write'));

		foreach ($links as $link) {
			$DB_DELAYED_QUERIES = array();

			$result = execute_delayed_query($q, $link, 'test_delayed_results');

			$this->assertTrue($result, "Failed with link = $link");
			$this->assertEqual(count($DB_DELAYED_QUERIES), 1);
			$this->assertEqual($DB_DELAYED_QUERIES[0]['q'], $q);
			$this->assertEqual($DB_DELAYED_QUERIES[0]['l'], $link);
			$this->assertEqual($DB_DELAYED_QUERIES[0]['h'], 'test_delayed_results');

			db_delayedexecution_shutdown_hook();

			$num_rows = mysql_num_rows($test_results);
			$this->assertEqual($num_rows, 1);
			$row = mysql_fetch_assoc($test_results);
			$this->assertEqual($row['test'], 1);
		}

		// test bad case
		$DB_DELAYED_QUERIES = array();
		$result = execute_delayed_query($q, 'not_a_link', 'test_delayed_results');
		$this->assertFalse($result);
		$this->assertEqual(array(), $DB_DELAYED_QUERIES);
	}

	/**
	 * https://github.com/elgg/elgg/issues/3210 - Don't remove -s in friendly titles
	 * https://github.com/elgg/elgg/issues/2276 - improve char encoding
	 */
	public function test_friendly_title() {
		$cases = array(
			// acid test
			"B&N > Amazon, OK? <bold> 'hey!' $34"
			=> "bn-amazon-ok-bold-hey-34",

			// hyphen, underscore and ASCII whitespace replaced by separator,
			// other non-alphanumeric ASCII removed
			"a-a_a a\na\ra\ta\va!a\"a#a\$a%aa'a(a)a*a+a,a.a/a:a;a=a?a@a[a\\a]a^a`a{a|a}a~a"
			=> "a-a-a-a-a-a-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
			
			// separators trimmed
			"-_ hello _-"
			=> "hello",

			// accents removed, lower case, other multibyte chars are URL encoded
			"I\xC3\xB1t\xC3\xABrn\xC3\xA2ti\xC3\xB4n\xC3\xA0liz\xC3\xA6ti\xC3\xB8n, AND \xE6\x97\xA5\xE6\x9C\xAC\xE8\xAA\x9E"
				// Iñtërnâtiônàlizætiøn, AND 日本語
			=> 'internationalizaetion-and-%E6%97%A5%E6%9C%AC%E8%AA%9E',
		);

		// where available, string is converted to NFC before transliteration
		if (ElggTranslit::hasNormalizerSupport()) {
			$form_d = "A\xCC\x8A"; // A followed by 'COMBINING RING ABOVE' (U+030A)
			$cases[$form_d] = "a";
		}

		foreach ($cases as $case => $expected) {
			$friendly_title = elgg_get_friendly_title($case);
			$this->assertIdentical($expected, $friendly_title);
		}
	}

	/**
	 * Test #5369 -- parse_urls()
	 * https://github.com/Elgg/Elgg/issues/5369
	 */
	public function test_parse_urls() {

		$cases = array(
			'no.link.here' =>
				'no.link.here',
			'simple link http://example.org test' =>
				'simple link <a href="http://example.org" rel="nofollow">http:/<wbr />/<wbr />example.org</a> test',
			'non-ascii http://ñew.org/ test' =>
				'non-ascii <a href="http://ñew.org/" rel="nofollow">http:/<wbr />/<wbr />ñew.org/<wbr /></a> test',

			// section 2.1
			'percent encoded http://example.org/a%20b test' =>
				'percent encoded <a href="http://example.org/a%20b" rel="nofollow">http:/<wbr />/<wbr />example.org/<wbr />a%20b</a> test',
			// section 2.2: skipping single quote and parenthese
			'reserved characters http://example.org/:/?#[]@!$&*+,;= test' =>
				'reserved characters <a href="http://example.org/:/?#[]@!$&*+,;=" rel="nofollow">http:/<wbr />/<wbr />example.org/<wbr />:/<wbr />?#[]@!$&*+,;=</a> test',
			// section 2.3
			'unreserved characters http://example.org/a1-._~ test' =>
				'unreserved characters <a href="http://example.org/a1-._~" rel="nofollow">http:/<wbr />/<wbr />example.org/<wbr />a1-._~</a> test',

			'parameters http://example.org/?val[]=1&val[]=2 test' =>
				'parameters <a href="http://example.org/?val[]=1&val[]=2" rel="nofollow">http:/<wbr />/<wbr />example.org/<wbr />?val[]=1&val[]=2</a> test',
			'port http://example.org:80/ test' =>
				'port <a href="http://example.org:80/" rel="nofollow">http:/<wbr />/<wbr />example.org:80/<wbr /></a> test',

			'parentheses (http://www.google.com) test' =>
				'parentheses (<a href="http://www.google.com" rel="nofollow">http:/<wbr />/<wbr />www.google.com</a>) test',
			'comma http://elgg.org, test' =>
				'comma <a href="http://elgg.org" rel="nofollow">http:/<wbr />/<wbr />elgg.org</a>, test',
			'period http://elgg.org. test' =>
				'period <a href="http://elgg.org" rel="nofollow">http:/<wbr />/<wbr />elgg.org</a>. test',
			'exclamation http://elgg.org! test' =>
				'exclamation <a href="http://elgg.org" rel="nofollow">http:/<wbr />/<wbr />elgg.org</a>! test',

			'already anchor <a href="http://twitter.com/">twitter</a> test' =>
				'already anchor <a href="http://twitter.com/">twitter</a> test',

			'ssl https://example.org/ test' =>
				'ssl <a href="https://example.org/" rel="nofollow">https:/<wbr />/<wbr />example.org/<wbr /></a> test',
			'ftp ftp://example.org/ test' =>
				'ftp <a href="ftp://example.org/" rel="nofollow">ftp:/<wbr />/<wbr />example.org/<wbr /></a> test',

			'web archive anchor <a href="http://web.archive.org/web/20000229040250/http://www.google.com/">google</a>' =>
				'web archive anchor <a href="http://web.archive.org/web/20000229040250/http://www.google.com/">google</a>',

			'single quotes already anchor <a href=\'http://www.yahoo.com\'>yahoo</a>' =>
				'single quotes already anchor <a href=\'http://www.yahoo.com\'>yahoo</a>',

			'unquoted already anchor <a href=http://www.yahoo.com>yahoo</a>' =>
				'unquoted already anchor <a href=http://www.yahoo.com>yahoo</a>',

			'parens in uri http://thedailywtf.com/Articles/A-(Long-Overdue)-BuildMaster-Introduction.aspx' =>
				'parens in uri <a href="http://thedailywtf.com/Articles/A-(Long-Overdue)-BuildMaster-Introduction.aspx" rel="nofollow">http:/<wbr />/<wbr />thedailywtf.com/<wbr />Articles/<wbr />A-(Long-Overdue)-BuildMaster-Introduction.aspx</a>'
		);
		foreach ($cases as $input => $output) {
			$this->assertEqual($output, parse_urls($input));
		}
	}
	
	/**
	 * Ensure additional select columns do not end up in entity attributes.
	 *
	 * https://github.com/Elgg/Elgg/issues/5538
	 */
	public function test_extra_columns_dont_appear_in_attributes() {
		global $ENTITY_CACHE;

		// may not have groups in DB - let's create one
		$group = new ElggGroup();
		$group->name = 'test_group';
		$group->access_id = ACCESS_PUBLIC;
		$this->assertTrue($group->save() !== false);
		
		// entity cache interferes with our test
		$ENTITY_CACHE = array();
		
		foreach (array('site', 'user', 'group', 'object') as $type) {
			$entities = elgg_get_entities(array(
				'type' => $type,
				'selects' => array('1 as _nonexistent_test_column'),
				'limit' => 1,
			));
			if (!$this->assertTrue($entities, "Query for '$type' did not return an entity.")) {
				continue;
			}
			$entity = $entities[0];
			$this->assertNull($entity->_nonexistent_test_column, "Additional select columns are leaking to attributes for '$type'");
		}
		
		$group->delete();
	}

	/**
	 * Ensure that ElggBatch doesn't go into infinite loop when disabling annotations recursively when show hidden is enabled.
	 *
	 * https://github.com/Elgg/Elgg/issues/5952
	 */
	public function test_disabling_annotations_infinite_loop() {

		//let's have some entity
		$group = new ElggGroup();
		$group->name = 'test_group';
		$group->access_id = ACCESS_PUBLIC;
		$this->assertTrue($group->save() !== false);

		$total = 51;
		//add some annotations
		for ($cnt = 0; $cnt < $total; $cnt++) {
			$group->annotate('test_annotation', 'value_' . $total);
		}

		//disable them
		$show_hidden = access_get_show_hidden_status();
		access_show_hidden_entities(true);
		$options = array(
			'guid' => $group->guid,
			'limit' => $total, //using strict limit to avoid real infinite loop and just see ElggBatch limiting on it before finishing the work
		);
		elgg_disable_annotations($options);
		access_show_hidden_entities($show_hidden);

		//confirm all being disabled
		$annotations = $group->getAnnotations(array(
			'limit' => $total,
		));
		foreach ($annotations as $annotation) {
			$this->assertTrue($annotation->enabled == 'no');
		}

		//delete group and annotations
		$group->delete();
	}

	public function test_ElggXMLElement_does_not_load_external_entities() {
		$elLast = libxml_disable_entity_loader(false);

		// build payload that should trigger loading of external entity
		$payload = file_get_contents(dirname(dirname(__FILE__)) . '/test_files/xxe/request.xml');
		$path = realpath(dirname(dirname(__FILE__)) . '/test_files/xxe/external_entity.txt');
		$path = str_replace('\\', '/', $path);
		if ($path[0] != '/') {
			$path = '/' . $path;
		}
		$path = 'file://' . $path;
		$payload = sprintf($payload, $path);

		// make sure we can actually this in this environment
		$element = new SimpleXMLElement($payload);
		$can_load_entity = preg_match('/secret/', (string)$element->methodName);

		$this->skipUnless($can_load_entity, "XXE vulnerability cannot be tested on this system");

		if ($can_load_entity) {
			$el = new ElggXMLElement($payload);
			$chidren = $el->getChildren();
			$content = $chidren[0]->getContent();
			$this->assertNoPattern('/secret/', $content);
		}

		libxml_disable_entity_loader($elLast);
	}
}