<?php
/**
 * Note, When running these tests, remember that some things are done differently
 * based on safe_mode. You can run the test in safe_mode like such:
 *
 *   phpunit -d safe_mode=on --group http
 *
 * You may also need `-d safe_mode_gid=1` to relax the safe_mode checks to allow
 * inclusion of PEAR.
 *
 * The WP_HTTP tests require a class-http.php file of r17550 or later.
 */
abstract class WP_HTTP_UnitTestCase extends WP_UnitTestCase {
	// You can use your own version of data/WPHTTP-testcase-redirection-script.php here.
	var $redirection_script = 'http://api.wordpress.org/core/tests/1.0/redirection.php';
	var $fileStreamUrl = 'http://s.w.org/screenshots/3.9/dashboard.png';

	protected $http_request_args;

	/**
	 * Mark test as skipped if the HTTP request times out
	 */
	function skipTestOnTimeout( $response ) {
		if( ! is_wp_error( $response ) ){
			return;
		}
		if ( 'connect() timed out!' === $response->get_error_message() ){
			$this->markTestSkipped( 'HTTP timeout' );
		}

		if ( 0 === strpos( $response->get_error_message(), 'Operation timed out after' ) ){
			$this->markTestSkipped( 'HTTP timeout' );
		}

		if ( 0 === strpos( $response->get_error_message(), 'stream_socket_client(): unable to connect to tcp://s.w.org:80' ) ) {
			$this->markTestSkipped( 'HTTP timeout' );
		}

	}

	function setUp() {

		if ( is_callable( array('WP_Http', '_getTransport') ) ) {
			$this->markTestSkipped('The WP_Http tests require a class-http.php file of r17550 or later.');
			return;
		}

		$class = "WP_Http_" . ucfirst( $this->transport );
		if ( !call_user_func( array($class, 'test') ) ) {
			$this->markTestSkipped( sprintf('The transport %s is not supported on this system', $this->transport) );
		}

		// Disable all transports aside from this one.
		foreach ( array( 'curl', 'streams', 'fsockopen' ) as $t ) {
			remove_filter( "use_{$t}_transport", '__return_false' ); // Just strip them all
			if ( $t != $this->transport )
				add_filter( "use_{$t}_transport", '__return_false' ); // and add it back if need be..
		}
	}

	function tearDown() {
		foreach ( array( 'curl', 'streams', 'fsockopen' ) as $t ) {
			remove_filter( "use_{$t}_transport", '__return_false' );
		}
		parent::tearDown();
	}

	function filter_http_request_args( array $args ) {
		$this->http_request_args = $args;
		return $args;
	}

	function test_redirect_on_301() {
		// 5 : 5 & 301
		$res = wp_remote_request($this->redirection_script . '?code=301&rt=' . 5, array('redirection' => 5) );
		$this->assertNotWPError( $res );
		$this->assertEquals(200, (int)$res['response']['code'] );
	}

	function test_redirect_on_302() {
		// 5 : 5 & 302
		$res = wp_remote_request($this->redirection_script . '?code=302&rt=' . 5, array('redirection' => 5) );
		$this->assertNotWPError( $res );
		$this->assertEquals(200, (int)$res['response']['code'] );
	}

	/**
	 * @ticket 16855
	 */
	function test_redirect_on_301_no_redirect() {
		// 5 > 0 & 301
		$res = wp_remote_request($this->redirection_script . '?code=301&rt=' . 5, array('redirection' => 0) );
		$this->assertNotWPError( $res );
		$this->assertEquals(301, (int)$res['response']['code'] );
	}

	/**
	 * @ticket 16855
	 */
	function test_redirect_on_302_no_redirect() {
		// 5 > 0 & 302
		$res = wp_remote_request($this->redirection_script . '?code=302&rt=' . 5, array('redirection' => 0) );
		$this->assertNotWPError( $res );
		$this->assertEquals(302, (int)$res['response']['code'] );
	}

	function test_redirections_equal() {
		// 5 - 5
		$res = wp_remote_request($this->redirection_script . '?rt=' . 5, array('redirection' => 5) );
		$this->assertNotWPError( $res );
		$this->assertEquals(200, (int)$res['response']['code'] );
	}

	function test_no_head_redirections() {
		// No redirections on HEAD request:
		$res = wp_remote_request($this->redirection_script . '?code=302&rt=' . 1, array('method' => 'HEAD') );
		$this->assertNotWPError( $res );
		$this->assertEquals( 302, (int)$res['response']['code'] );
	}

	/**
	 * @ticket 16855
	 */
	function test_redirect_on_head() {
		// Redirections on HEAD request when Requested
		$res = wp_remote_request($this->redirection_script . '?rt=' . 5, array('redirection' => 5, 'method' => 'HEAD') );
		$this->assertNotWPError( $res );
		$this->assertEquals( 200, (int)$res['response']['code'] );
	}

	function test_redirections_greater() {
		// 10 > 5
		$res = wp_remote_request($this->redirection_script . '?rt=' . 10, array('redirection' => 5) );
		$this->assertWPError( $res );
	}

	function test_redirections_greater_edgecase() {
		// 6 > 5 (close edgecase)
		$res = wp_remote_request($this->redirection_script . '?rt=' . 6, array('redirection' => 5) );
		$this->assertWPError( $res );
	}

	function test_redirections_less_edgecase() {
		// 4 < 5 (close edgecase)
		$res = wp_remote_request($this->redirection_script . '?rt=' . 4, array('redirection' => 5) );
		$this->assertNotWPError( $res );
	}

	/**
	 * @ticket 16855
	 */
	function test_redirections_zero_redirections_specified() {
		// 0 redirections asked for, Should return the document?
		$res = wp_remote_request($this->redirection_script . '?code=302&rt=' . 5, array('redirection' => 0) );
		$this->assertNotWPError( $res );
		$this->assertEquals( 302, (int)$res['response']['code'] );
	}

	/**
	 * Do not redirect on non 3xx status codes
	 *
	 * @ticket 16889
	 */
	function test_location_header_on_201() {
		// Prints PASS on initial load, FAIL if the client follows the specified redirection
		$res = wp_remote_request( $this->redirection_script . '?201-location=true' );
		$this->assertNotWPError( $res );
		$this->assertEquals( 'PASS', $res['body']);
	}

	/**
	 * Test handling of PUT requests on redirects
	 *
	 * @ticket 16889
	 */
	function test_no_redirection_on_PUT() {
		$url = 'http://api.wordpress.org/core/tests/1.0/redirection.php?201-location=1';

		// Test 301 - POST to POST
		$res = wp_remote_request( $url, array( 'method' => 'PUT', 'timeout' => 30 ) );
		$this->assertEquals( 'PASS', wp_remote_retrieve_body( $res ) );
		$this->assertTrue( !empty( $res['headers']['location'] ) );
	}

	/**
	 * @ticket 11888
	 */
	function test_send_headers() {
		// Test that the headers sent are recieved by the server
		$headers = array('test1' => 'test', 'test2' => 0, 'test3' => '');
		$res = wp_remote_request( $this->redirection_script . '?header-check', array('headers' => $headers) );

		$this->assertNotWPError( $res );

		$headers = array();
		foreach ( explode("\n", $res['body']) as $key => $value ) {
			if ( empty($value) )
				continue;
			$parts = explode(':', $value,2);
			unset($headers[$key]);
			$headers[ $parts[0] ] = $parts[1];
		}

		$this->assertTrue( isset($headers['test1']) && 'test' == $headers['test1'] );
		$this->assertTrue( isset($headers['test2']) && '0' === $headers['test2'] );
		// cURL/HTTP Extension Note: Will never pass, cURL does not pass headers with an empty value.
		// Should it be that empty headers with empty values are NOT sent?
		//$this->assertTrue( isset($headers['test3']) && '' === $headers['test3'] );
	}

	function test_file_stream() {
		$url = $this->fileStreamUrl;
		$size = 153204;
		$res = wp_remote_request( $url, array( 'stream' => true, 'timeout' => 30 ) ); //Auto generate the filename.

		// Cleanup before we assert, as it'll return early.
		if ( ! is_wp_error( $res ) ) {
			$filesize = filesize( $res['filename'] );
			unlink( $res['filename'] );
		}

		$this->skipTestOnTimeout( $res );

		$this->assertNotWPError( $res );
		$this->assertEquals( '', $res['body'] ); // The body should be empty.
		$this->assertEquals( $size, $res['headers']['content-length'] ); // Check the headers are returned (and the size is the same..)
		$this->assertEquals( $size, $filesize ); // Check that the file is written to disk correctly without any extra characters
		$this->assertStringStartsWith( get_temp_dir(), $res['filename'] ); // Check it's saving within the temp dir
	}

	/**
	 * @ticket 26726
	 */
	function test_file_stream_limited_size() {
		$url = $this->fileStreamUrl;
		$size = 10000;
		$res = wp_remote_request( $url, array( 'stream' => true, 'timeout' => 30, 'limit_response_size' => $size ) ); //Auto generate the filename.

		// Cleanup before we assert, as it'll return early.
		if ( ! is_wp_error( $res ) ) {
			$filesize = filesize( $res['filename'] );
			unlink( $res['filename'] );
		}

		$this->skipTestOnTimeout( $res );

		$this->assertNotWPError( $res );
		$this->assertEquals( $size, $filesize ); // Check that the file is written to disk correctly without any extra characters

	}

	/**
	 * Tests Limiting the response size when returning strings
	 *
	 * @ticket 31172
	 */
	function test_request_limited_size() {
		$url = $this->fileStreamUrl;
		$size = 10000;

		$res = wp_remote_request( $url, array( 'timeout' => 30, 'limit_response_size' => $size ) );

		$this->skipTestOnTimeout( $res );

		$this->assertNotWPError( $res );
		$this->assertEquals( $size, strlen( $res['body'] ) );
	}

	/**
	 * Test POST redirection methods
	 *
	 * @dataProvider data_post_redirect_to_method_300
	 *
	 * @ticket 17588
	 */
	function test_post_redirect_to_method_300( $response_code, $method ) {
		$url = 'http://api.wordpress.org/core/tests/1.0/redirection.php?post-redirect-to-method=1';

		$res = wp_remote_post( add_query_arg( 'response_code', $response_code, $url ), array( 'timeout' => 30 ) );
		$this->assertEquals( $method, wp_remote_retrieve_body( $res ) );
	}

	public function data_post_redirect_to_method_300() {
		return array(
			// Test 300 - POST to POST
			array(
				300,
				'POST',
			),
			// Test 301 - POST to POST
			array(
				301,
				'POST',
			),
			// Test 302 - POST to GET
			array(
				302,
				'GET',
			),
			// Test 303 - POST to GET
			array(
				303,
				'GET',
			),
		);
	}

	/**
	 * Test HTTP Requests using an IP url, with a HOST header specified
	 *
	 * @ticket 24182
	 */
	function test_ip_url_with_host_header() {
		$ip = gethostbyname( 'api.wordpress.org' );
		$url = 'http://' . $ip . '/core/tests/1.0/redirection.php?print-pass=1';
		$args = array(
			'headers' => array(
				'Host' => 'api.wordpress.org',
			),
			'timeout' => 30,
			'redirection' => 0,
		);

		$res = wp_remote_get( $url, $args );
		$this->assertEquals( 'PASS', wp_remote_retrieve_body( $res ) );

	}

	/**
	 * Test HTTP requests where SSL verification is disabled but the CA bundle is still populated
	 *
	 * @ticket 33978
	 */
	function test_https_url_without_ssl_verification() {
		$url = 'https://wordpress.org/';
		$args = array(
			'sslverify' => false,
		);

		add_filter( 'http_request_args', array( $this, 'filter_http_request_args' ) );

		$res = wp_remote_head( $url, $args );

		remove_filter( 'http_request_args', array( $this, 'filter_http_request_args' ) );

		$this->assertNotEmpty( $this->http_request_args['sslcertificates'] );
		$this->assertNotWPError( $res );
	}

	/**
	 * Test HTTP Redirects with multiple Location headers specified
	 *
	 * @ticket 16890
	 */
	function test_multiple_location_headers() {
		$url = 'http://api.wordpress.org/core/tests/1.0/redirection.php?multiple-location-headers=1';
		$res = wp_remote_head( $url, array( 'timeout' => 30 ) );

		$this->assertInternalType( 'array', wp_remote_retrieve_header( $res, 'location' ) );
		$this->assertCount( 2, wp_remote_retrieve_header( $res, 'location' ) );

		$res = wp_remote_get( $url, array( 'timeout' => 30 ) );
		$this->assertEquals( 'PASS', wp_remote_retrieve_body( $res ) );

	}

	/**
	 * Test HTTP Cookie handling
	 *
	 * @ticket 21182
	 */
	function test_cookie_handling() {
		$url = 'http://api.wordpress.org/core/tests/1.0/redirection.php?cookie-test=1';

		$res = wp_remote_get( $url );
		$this->assertEquals( 'PASS', wp_remote_retrieve_body( $res ) );
	}

	/**
	 * Test if HTTPS support works
	 *
	 * @group ssl
	 * @ticket 25007
	 */
	function test_ssl() {
		if ( ! wp_http_supports( array( 'ssl' ) ) )
			$this->markTestSkipped( 'This install of PHP does not support SSL' );

		$res = wp_remote_get( 'https://wordpress.org/' );
		$this->assertNotWPError( $res );
	}

	/**
	 * @ticket 37733
	 */
	function test_url_with_double_slashes_path() {
		$url = $this->redirection_script . '?rt=' . 0;

		$path = parse_url( $url, PHP_URL_PATH );
		$url = str_replace( $path, '/' . $path, $url );

		$res = wp_remote_request( $url );
		$this->assertNotWPError( $res );
	}


}
