PHP WP_Http::_getTransport方法代码示例

 function pre_http_request($pre, $args, $url)
 {
     $this->args = wp_parse_args($args, array('authentication' => NULL, 'username' => NULL, 'password' => NULL));
     // Ruh roh...
     if (!is_null($this->args['authentication'])) {
         switch ($this->args['authentication']) {
             case '-':
                 // No HTTP Auth method. Remove this stuff.
                 $this->args['authentication'] = NULL;
                 $this->args['username'] = NULL;
                 $this->args['password'] = NULL;
                 break;
             case 'basic':
                 if ($this->have_curl($args, $url)) {
                     // Don't need to do anything. http_api_curl hook takes care
                     // of it.
                     break;
                 } elseif ($this->have_streams($args, $url)) {
                     // curl has a nice native way to jam in the username and
                     // passwd but streams and fsockopen do not. So we have to
                     // make a recursive call with the credentials in the URL.
                     // Wee ha!
                     $method = $this->args['authentication'];
                     $credentials = $this->args['username'];
                     if (!is_null($this->args['password'])) {
                         $credentials .= ':' . $args['password'];
                     }
                     // Remove these so we don't recurse all the way down
                     unset($this->args['authentication']);
                     unset($this->args['username']);
                     unset($this->args['password']);
                     $url = preg_replace('!(https?://)!', '$1' . $credentials . '@', $url);
                     // Subsidiary request
                     $pre = wp_remote_request($url, $this->args);
                     break;
                 }
             case 'digest':
                 if ($this->have_curl($args, $url)) {
                     // Don't need to do anything. http_api_curl hook takes care
                     // of it.
                     break;
                 }
             default:
                 if (is_callable('WP_Http', '_get_first_available_transport')) {
                     $trans = WP_Http::_get_first_available_transport($args, $url);
                     if (!$trans) {
                         $trans = WP_Http::_get_first_available_transport(array(), $url);
                     }
                 } elseif (is_callable('WP_Http', '_getTransport')) {
                     $transports = WP_Http::_getTransport($args);
                     $trans = get_class(reset($transports));
                 } else {
                     $trans = 'HTTP';
                 }
                 $pre = new WP_Error('http_request_failed', sprintf(__('%s cannot use %s authentication with the %s transport.'), __CLASS__, $args['authentication'], $trans));
         }
     }
     return $pre;
 }

 /**
  * Send a HTTP request to a URI.
  *
  * The body and headers are part of the arguments. The 'body' argument is for the body and will
  * accept either a string or an array. The 'headers' argument should be an array, but a string
  * is acceptable. If the 'body' argument is an array, then it will automatically be escaped
  * using http_build_query().
  *
  * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS
  * protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send
  * headers. Other protocols are unsupported and most likely will fail.
  *
  * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and
  * 'user-agent'.
  *
  * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow
  * others, but should not be assumed. The 'timeout' is used to sent how long the connection
  * should stay open before failing when no response. 'redirection' is used to track how many
  * redirects were taken and used to sent the amount for other transports, but not all transports
  * accept setting that value.
  *
  * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and
  * '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The
  * 'user-agent' option is the user-agent and is used to replace the default user-agent, which is
  * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
  *
  * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP
  * while it performs the request or continue regardless. Actually, that isn't entirely correct.
  * Blocking mode really just means whether the fread should just pull what it can whenever it
  * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading
  * the entire content. It doesn't actually always mean that PHP will continue going after making
  * the request.
  *
  * @access public
  * @since 2.7.0
  * @todo Refactor this code. The code in this method extends the scope of its original purpose
  *		and should be refactored to allow for cleaner abstraction and reduce duplication of the
  *		code. One suggestion is to create a class specifically for the arguments, however
  *		preliminary refactoring to this affect has affect more than just the scope of the
  *		arguments. Something to ponder at least.
  *
  * @param string $url URI resource.
  * @param str|array $args Optional. Override the defaults.
  * @return array containing 'headers', 'body', 'response', 'cookies'
  */
 function request($url, $args = array())
 {
     global $wp_version;
     $defaults = array('method' => 'GET', 'timeout' => apply_filters('http_request_timeout', 5), 'redirection' => apply_filters('http_request_redirection_count', 5), 'httpversion' => apply_filters('http_request_version', '1.0'), 'user-agent' => apply_filters('http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo('url')), 'blocking' => true, 'headers' => array(), 'cookies' => array(), 'body' => null, 'compress' => false, 'decompress' => true, 'sslverify' => true);
     $r = wp_parse_args($args, $defaults);
     $r = apply_filters('http_request_args', $r, $url);
     // Allow plugins to short-circuit the request
     $pre = apply_filters('pre_http_request', false, $r, $url);
     if (false !== $pre) {
         return $pre;
     }
     $arrURL = parse_url($url);
     if ($this->block_request($url)) {
         return new WP_Error('http_request_failed', __('User has blocked requests through HTTP.'));
     }
     // Determine if this is a https call and pass that on to the transport functions
     // so that we can blacklist the transports that do not support ssl verification
     $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';
     // Determine if this request is to OUR install of WordPress
     $homeURL = parse_url(get_bloginfo('url'));
     $r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host'];
     unset($homeURL);
     if (is_null($r['headers'])) {
         $r['headers'] = array();
     }
     if (!is_array($r['headers'])) {
         $processedHeaders = WP_Http::processHeaders($r['headers']);
         $r['headers'] = $processedHeaders['headers'];
     }
     if (isset($r['headers']['User-Agent'])) {
         $r['user-agent'] = $r['headers']['User-Agent'];
         unset($r['headers']['User-Agent']);
     }
     if (isset($r['headers']['user-agent'])) {
         $r['user-agent'] = $r['headers']['user-agent'];
         unset($r['headers']['user-agent']);
     }
     // Construct Cookie: header if any cookies are set
     WP_Http::buildCookieHeader($r);
     if (WP_Http_Encoding::is_available()) {
         $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();
     }
     if (empty($r['body'])) {
         // Some servers fail when sending content without the content-length header being set.
         // Also, to fix another bug, we only send when doing POST and PUT and the content-length
         // header isn't already set.
         if (($r['method'] == 'POST' || $r['method'] == 'PUT') && !isset($r['headers']['Content-Length'])) {
             $r['headers']['Content-Length'] = 0;
         }
         // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in
         // this case is simply that we aren't sending any bodies and to get the transports that
         // don't support sending bodies along with those which do.
         $transports = WP_Http::_getTransport($r);
     } else {
         if (is_array($r['body']) || is_object($r['body'])) {
//.........这里部分代码省略.........

 /**
  * Send a HTTP request to a URI.
  *
  * The body and headers are part of the arguments. The 'body' argument is
  * for the body and will accept either a string or an array. The 'headers'
  * argument should be an array, but a string is acceptable. If the 'body'
  * argument is an array, then it will automatically be escaped using
  * http_build_query().
  *
  * The only URI that are supported in the HTTP Transport implementation are
  * the HTTP and HTTPS protocols. HTTP and HTTPS are assumed so the server
  * might not know how to handle the send headers. Other protocols are
  * unsupported and most likely will fail.
  *
  * The defaults are 'method', 'timeout', 'redirection', 'httpversion',
  * 'blocking' and 'user-agent'.
  *
  * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports
  * technically allow others, but should not be assumed. The 'timeout' is
  * used to sent how long the connection should stay open before failing when
  * no response. 'redirection' is used to track how many redirects were taken
  * and used to sent the amount for other transports, but not all transports
  * accept setting that value.
  *
  * The 'httpversion' option is used to sent the HTTP version and accepted
  * values are '1.0', and '1.1' and should be a string. Version 1.1 is not
  * supported, because of chunk response. The 'user-agent' option is the
  * user-agent and is used to replace the default user-agent, which is
  * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
  *
  * 'blocking' is the default, which is used to tell the transport, whether
  * it should halt PHP while it performs the request or continue regardless.
  * Actually, that isn't entirely correct. Blocking mode really just means
  * whether the fread should just pull what it can whenever it gets bytes or
  * if it should wait until it has enough in the buffer to read or finishes
  * reading the entire content. It doesn't actually always mean that PHP will
  * continue going after making the request.
  *
  * @access public
  * @since 2.7.0
  *
  * @param string $url URI resource.
  * @param str|array $args Optional. Override the defaults.
  * @return boolean
  */
 function request($url, $args = array())
 {
     global $wp_version;
     $defaults = array('method' => 'GET', 'timeout' => apply_filters('http_request_timeout', 5), 'redirection' => apply_filters('http_request_redirection_count', 5), 'httpversion' => apply_filters('http_request_version', '1.0'), 'user-agent' => apply_filters('http_headers_useragent', 'WordPress/' . $wp_version), 'blocking' => true, 'headers' => array(), 'body' => null, 'compress' => false, 'decompress' => true);
     $r = wp_parse_args($args, $defaults);
     $r = apply_filters('http_request_args', $r, $url);
     if (is_null($r['headers'])) {
         $r['headers'] = array();
     }
     if (!is_array($r['headers'])) {
         $processedHeaders = WP_Http::processHeaders($r['headers']);
         $r['headers'] = $processedHeaders['headers'];
     }
     if (isset($r['headers']['User-Agent'])) {
         $r['user-agent'] = $r['headers']['User-Agent'];
         unset($r['headers']['User-Agent']);
     }
     if (isset($r['headers']['user-agent'])) {
         $r['user-agent'] = $r['headers']['user-agent'];
         unset($r['headers']['user-agent']);
     }
     if (WP_Http_Encoding::is_available()) {
         $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();
     }
     if (is_null($r['body'])) {
         // Some servers fail when sending content without the content-length
         // header being set.
         $r['headers']['Content-Length'] = 0;
         $transports = WP_Http::_getTransport($r);
     } else {
         if (is_array($r['body']) || is_object($r['body'])) {
             $r['body'] = http_build_query($r['body'], null, '&');
             $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset');
             $r['headers']['Content-Length'] = strlen($r['body']);
         }
         if (!isset($r['headers']['Content-Length']) && !isset($r['headers']['content-length'])) {
             $r['headers']['Content-Length'] = strlen($r['body']);
         }
         $transports = WP_Http::_postTransport($r);
     }
     if (has_action('http_api_debug')) {
         do_action('http_api_debug', $transports, 'transports_list');
     }
     $response = array('headers' => array(), 'body' => '', 'response' => array('code', 'message'));
     foreach ((array) $transports as $transport) {
         $response = $transport->request($url, $r);
         if (has_action('http_api_debug')) {
             do_action('http_api_debug', $response, 'response', get_class($transport));
         }
         if (!is_wp_error($response)) {
             return $response;
         }
     }
     return $response;
 }

//.........这里部分代码省略.........
	 * @param string $url URI resource.
	 * @param str|array $args Optional. Override the defaults.
	 * @return array containing 'headers', 'body', 'response', 'cookies'
	 */
	function request( $url, $args = array() ) {
		global $wp_version;

		$defaults = array(
			'method' => 'GET',
			'timeout' => apply_filters( 'http_request_timeout', 5),
			'redirection' => apply_filters( 'http_request_redirection_count', 5),
			'httpversion' => apply_filters( 'http_request_version', '1.0'),
			'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )  ),
			'blocking' => true,
			'headers' => array(),
			'cookies' => array(),
			'body' => null,
			'compress' => false,
			'decompress' => true,
			'sslverify' => true
		);

		$r = wp_parse_args( $args, $defaults );
		$r = apply_filters( 'http_request_args', $r, $url );

		$arrURL = parse_url($url);

		if ( $this->block_request( $url ) )
			return new WP_Error('http_request_failed', 'User has blocked requests through HTTP.');

		// Determine if this is a https call and pass that on to the transport functions
		// so that we can blacklist the transports that do not support ssl verification
		$r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';

		// Determine if this request is to OUR install of WordPress
		$homeURL = parse_url(get_bloginfo('url'));
		$r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host'];
		unset($homeURL);

		if ( is_null( $r['headers'] ) )
			$r['headers'] = array();

		if ( ! is_array($r['headers']) ) {
			$processedHeaders = WP_Http::processHeaders($r['headers']);
			$r['headers'] = $processedHeaders['headers'];
		}

		if ( isset($r['headers']['User-Agent']) ) {
			$r['user-agent'] = $r['headers']['User-Agent'];
			unset($r['headers']['User-Agent']);
		}

		if ( isset($r['headers']['user-agent']) ) {
			$r['user-agent'] = $r['headers']['user-agent'];
			unset($r['headers']['user-agent']);
		}

		// Construct Cookie: header if any cookies are set
		WP_Http::buildCookieHeader( $r );

		if ( WP_Http_Encoding::is_available() )
			$r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();

		if ( is_null($r['body']) ) {
			// Some servers fail when sending content without the content-length
			// header being set.
			$r['headers']['Content-Length'] = 0;
			$transports = WP_Http::_getTransport($r);
		} else {
			if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {
				if ( ! version_compare(phpversion(), '5.1.2', '>=') )
					$r['body'] = _http_build_query($r['body'], null, '&');
				else
					$r['body'] = http_build_query($r['body'], null, '&');
				$r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset');
				$r['headers']['Content-Length'] = strlen($r['body']);
			}

			if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )
				$r['headers']['Content-Length'] = strlen($r['body']);

			$transports = WP_Http::_postTransport($r);
		}

		if ( has_action('http_api_debug') )
			do_action('http_api_debug', $transports, 'transports_list');

		$response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
		foreach ( (array) $transports as $transport ) {
			$response = $transport->request($url, $r);

			if ( has_action('http_api_debug') )
				do_action( 'http_api_debug', $response, 'response', get_class($transport) );

			if ( ! is_wp_error($response) )
				return $response;
		}

		return $response;
	}

        /**
         * Print and request user for Google in profile. Token link present
         * uses if settings in user level
         * run by action 'show_user_profile' from user-edit.php
         *
         * @param object $user
         */
        function user_profile($user)
        {
            if (!current_user_can('picasa_dialog')) {
                return;
            }
            if ($this->options['pe2_level'] != 'user') {
                return;
            }
            $user_id = $user->ID;
            if (isset($_GET['revoke'])) {
                $response = $this->get_feed("https://www.google.com/accounts/AuthSubRevokeToken");
                if (is_wp_error($response)) {
                    $message = __('Google returned error: ', 'pe2') . $response->get_error_message();
                } else {
                    $message = __('Private access revoked', 'pe2');
                }
                delete_user_meta($user_id, 'pe2_token');
                $this->options['pe2_token'] = '';
            }
            if (isset($_GET['message']) && $_GET['message']) {
                $message = esc_html(stripcslashes($_GET['message']));
            }
            if (!get_user_meta($user_id, 'pe2_user_name', true) && current_user_can('manage_options')) {
                update_user_meta($user_id, 'pe2_user_name', $this->options['pe2_user_name']);
                if ($this->options['pe2_token']) {
                    update_user_meta($user_id, 'pe2_token', $this->options['pe2_token']);
                }
            }
            ?>
				<h3><?php 
            _e('Google+ Express access', 'pe2');
            ?>
</h3>

				<?php 
            if ($message) {
                echo '<div id="picasa-express-x2-message" class="updated"><p><strong>' . $message . '</strong></p></div>';
            }
            ?>

				<table class="form-table">
					<?php 
            $user = get_user_meta($user_id, 'pe2_user_name', true);
            $result = 'ok';
            $feed_url = "http://picasaweb.google.com/data/feed/base/user/{$user}?alt=rss&kind=album&hl=en_US";
            $response = $this->get_feed($feed_url);
            if (is_wp_error($response)) {
                $result = 'error: ' . $response->get_error_message();
            } else {
                if (!$this->get_item($response, 'atom:id')) {
                    $result = 'error: wrong answer';
                }
            }
            if (method_exists('WP_Http', '_getTransport')) {
                $ta = array();
                $transports = WP_Http::_getTransport(array());
                foreach ($transports as $t) {
                    $ta[] = strtolower(str_replace('WP_Http_', '', get_class($t)));
                }
                if ($ta) {
                    $result = sprintf(__("Checking user: %s - Transport: %s - <a href=\"%s\" target=\"_blank\">URL</a>", 'pe2'), $result, implode(',', $ta), $feed_url);
                }
            } else {
                if (method_exists('WP_Http', '_get_first_available_transport')) {
                    $transport = WP_Http::_get_first_available_transport(array());
                    if ($transport) {
                        $transport_name = strtolower(str_replace('WP_HTTP_', '', $transport));
                        $result = sprintf(' ' . __("Checking user: %s - Transport: %s - <a href=\"%s\" target=\"_blank\">URL</a>", 'pe2'), $result, $transport_name, $feed_url);
                    }
                } else {
                    $result = '';
                }
            }
            $this->make_settings_row(__('Google user name', 'pe2'), '<input type="text" class="regular-text" name="pe2_user_name" value="' . esc_attr($user) . '" />' . $result . (!get_user_meta($user_id, 'pe2_token', true) ? '<br /><a href="https://www.google.com/accounts/AuthSubRequest?next=' . urlencode($this->google_authorize_plugin_URL . '?authorize&user=' . $user_id) . '&scope=http%3A%2F%2Fpicasaweb.google.com%2Fdata%2F&session=1&secure=0">' . __('Requesting access to private albums', 'pe2') . '</a>' : '<br/><a href="?revoke=true">' . __('Revoke access to private albums', 'pe2') . '</a>'), get_user_meta($user_id, 'pe2_token', true) ? __('You already received the access to private albums', 'pe2') : __('By this link you will be redirected to the Google authorization page. Please, use same name as above to login before accept.', 'pe2'));
            $option = get_user_meta($user_id, 'pe2_save_state', true);
            $this->make_settings_row(__('Save last state', 'pe2'), '<label><input type="checkbox" name="pe2_save_state" value="1" ' . checked($option, '1', false) . ' /> ' . __('Save last state in dialog', 'pe2') . '</label> ', __('Save user when changes, album if you insert images or albums list if you shorcode for album', 'pe2'));
            ?>
				</table>
			<?php 
        }

	/**
	 * Send a HTTP request to a URI.
	 *
	 * The body and headers are part of the arguments. The 'body' argument is
	 * for the body and will accept either a string or an array. The 'headers'
	 * argument should be an array, but a string is acceptable. If the 'body'
	 * argument is an array, then it will automatically be escaped using
	 * http_build_query().
	 *
	 * The only URI that are supported in the HTTP Transport implementation are
	 * the HTTP and HTTPS protocols. HTTP and HTTPS are assumed so the server
	 * might not know how to handle the send headers. Other protocols are
	 * unsupported and most likely will fail.
	 *
	 * The defaults are 'method', 'timeout', 'redirection', 'httpversion',
	 * 'blocking' and 'user-agent'.
	 *
	 * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports
	 * technically allow others, but should not be assumed. The 'timeout' is
	 * used to sent how long the connection should stay open before failing when
	 * no response. 'redirection' is used to track how many redirects were taken
	 * and used to sent the amount for other transports, but not all transports
	 * accept setting that value.
	 *
	 * The 'httpversion' option is used to sent the HTTP version and accepted
	 * values are '1.0', and '1.1' and should be a string. Version 1.1 is not
	 * supported, because of chunk response. The 'user-agent' option is the
	 * user-agent and is used to replace the default user-agent, which is
	 * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
	 *
	 * 'blocking' is the default, which is used to tell the transport, whether
	 * it should halt PHP while it performs the request or continue regardless.
	 * Actually, that isn't entirely correct. Blocking mode really just means
	 * whether the fread should just pull what it can whenever it gets bytes or
	 * if it should wait until it has enough in the buffer to read or finishes
	 * reading the entire content. It doesn't actually always mean that PHP will
	 * continue going after making the request.
	 *
	 * @access public
	 * @since 2.7
	 *
	 * @param string $url URI resource.
	 * @param str|array $args Optional. Override the defaults.
	 * @return boolean
	 */
	function request( $url, $args = array() ) {
		global $wp_version;

		$defaults = array(
			'method' => 'GET',
			'timeout' => apply_filters( 'http_request_timeout', 5),
			'redirection' => apply_filters( 'http_request_redirection_count', 5),
			'httpversion' => apply_filters( 'http_request_version', '1.0'),
			'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version ),
			'blocking' => true,
			'headers' => array(), 'body' => null
		);

		$r = wp_parse_args( $args, $defaults );
		$r = apply_filters( 'http_request_args', $r );

		if ( is_null( $r['headers'] ) )
			$r['headers'] = array();

		if ( ! is_array($r['headers']) ) {
			$processedHeaders = WP_Http::processHeaders($r['headers']);
			$r['headers'] = $processedHeaders['headers'];
		}

		if ( isset($r['headers']['User-Agent']) ) {
			$r['user-agent'] = $r['headers']['User-Agent'];
			unset($r['headers']['User-Agent']);
		}

		if ( isset($r['headers']['user-agent']) ) {
			$r['user-agent'] = $r['headers']['user-agent'];
			unset($r['headers']['user-agent']);
		}

		if ( is_null($r['body']) ) {
			$transports = WP_Http::_getTransport($r);
		} else {
			if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {
				$r['body'] = http_build_query($r['body'], null, '&');
				$r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset');
				$r['headers']['Content-Length'] = strlen($r['body']);
			}

			if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )
				$r['headers']['Content-Length'] = strlen($r['body']);

			$transports = WP_Http::_postTransport($r);
		}

		$response = array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
		foreach( (array) $transports as $transport ) {
			$response = $transport->request($url, $r);

			if( !is_wp_error($response) )
				return $response;
//.........这里部分代码省略.........