mirror of
https://github.com/WordPress/WordPress.git
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Initial cURL support. Doc and non-blocking mode fixes. Props santosj. see #4779
git-svn-id: http://svn.automattic.com/wordpress/trunk@8520 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan
parent
6425f7db9d
commit
2f4537ad4c
@ -1,6 +1,8 @@
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<?php
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/**
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* Simple HTTP request fallback system
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* Simple and uniform HTTP request API.
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*
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* Will eventually replace and standardize the WordPress HTTP requests made.
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*
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* @package WordPress
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* @subpackage HTTP
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@ -9,10 +11,22 @@
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*/
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/**
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* Abstract class for all of the fallback implementation
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* classes. The implementation classes will extend this class
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* to keep common API methods universal between different
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* functionality.
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* WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
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*
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* This class is called for the functionality of making HTTP requests and should
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* replace Snoopy functionality, eventually. There is no available functionality
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* to add HTTP transport implementations, since most of the HTTP transports are
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* added and available for use.
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*
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* The exception is that cURL is not available as a transport and lacking an
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* implementation. It will be added later and should be a patch on the WordPress
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* Trac.
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*
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* There are no properties, because none are needed and for performance reasons.
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* Some of the functions are static and while they do have some overhead over
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* functions in PHP4, the purpose is maintainability. When PHP5 is finally the
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* requirement, it will be easy to add the static keyword to the code. It is not
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* as easy to convert a function to a method after enough code uses the old way.
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*
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* @package WordPress
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* @subpackage HTTP
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@ -33,11 +47,18 @@ class WP_Http {
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/**
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* PHP5 style Constructor - Setup available transport if not available.
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*
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* PHP4 does not have the 'self' keyword and since WordPress supports PHP4,
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* the class needs to be used for the static call.
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*
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* The transport are setup to save time. This should only be called once, so
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* the overhead should be fine.
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*
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* @since 2.7
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* @return WP_Http
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*/
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function __construct() {
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WP_Http::_getTransport();
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WP_Http::_postTransport();
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}
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/**
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@ -46,6 +67,18 @@ class WP_Http {
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* Tests all of the objects and returns the object that passes. Also caches
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* that object to be used later.
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*
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* The order for the GET/HEAD requests are Streams, HTTP Extension, Fopen,
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* and finally Fsockopen. fsockopen() is used last, because it has the most
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* overhead in its implementation. There isn't any real way around it, since
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* redirects have to be supported, much the same way the other transports
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* also handle redirects.
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*
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* There are currently issues with "localhost" not resolving correctly with
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* DNS. This may cause an error "failed to open stream: A connection attempt
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* failed because the connected party did not properly respond after a
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* period of time, or established connection failed because connected host
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* has failed to respond."
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*
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* @since 2.7
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* @access private
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*
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@ -75,7 +108,7 @@ class WP_Http {
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* that object to be used later. This is for posting content to a URL and
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* is used when there is a body. The plain Fopen Transport can not be used
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* to send content, but the streams transport can. This is a limitation that
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* is addressed here.
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* is addressed here, by just not including that transport.
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*
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* @since 2.7
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* @access private
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@ -98,15 +131,44 @@ class WP_Http {
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}
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/**
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* Retrieve the location and set the class properties after the site has been retrieved.
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* Send a HTTP request to a URI.
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*
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* The only URI that are supported in the HTTP Transport implementation are
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* the HTTP and HTTPS protocols. HTTP and HTTPS are assumed so the server
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* might not know how to handle the send headers. Other protocols are
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* unsupported and most likely will fail.
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*
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* The defaults are 'method', 'timeout', 'redirection', 'httpversion',
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* 'blocking' and 'user-agent'.
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*
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* Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports
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* technically allow others, but should not be assumed. The 'timeout' is
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* used to sent how long the connection should stay open before failing when
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* no response. 'redirection' is used to track how many redirects were taken
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* and used to sent the amount for other transports, but not all transports
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* accept setting that value.
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*
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* The 'httpversion' option is used to sent the HTTP version and accepted
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* values are '1.0', and '1.1' and should be a string. Version 1.1 is not
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* supported, because of chunk response. The 'user-agent' option is the
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* user-agent and is used to replace the default user-agent, which is
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* 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
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*
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* 'blocking' is the default, which is used to tell the transport, whether
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* it should halt PHP while it performs the request or continue regardless.
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* Actually, that isn't entirely correct. Blocking mode really just means
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* whether the fread should just pull what it can whenever it gets bytes or
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* if it should wait until it has enough in the buffer to read or finishes
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* reading the entire content. It doesn't actually always mean that PHP will
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* continue going after making the request.
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*
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* @access public
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* @since 2.7
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*
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* @param string $url
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @param str|array $type Optional. Should be an already processed array with HTTP arguments.
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* @return boolean
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*/
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function request($url, $args = array(), $headers = null, $body = null) {
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@ -114,8 +176,9 @@ class WP_Http {
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$defaults = array(
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'method' => 'GET', 'timeout' => 3,
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'redirection' => 5, 'redirected' => false,
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'httpversion' => '1.0', 'blocking' => true
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'redirection' => 5, 'httpversion' => '1.0',
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'user-agent' => apply_filters('http_headers_useragent', 'WordPress/' . $wp_version ),
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'blocking' => true
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);
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$r = wp_parse_args( $args, $defaults );
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@ -128,9 +191,9 @@ class WP_Http {
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}
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if ( ! isset($headers['user-agent']) || ! isset($headers['User-Agent']) )
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$headers['user-agent'] = apply_filters('http_headers_useragent', 'WordPress/' . $wp_version );
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$headers['user-agent'] = $r['user-agent'];
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if ( is_null($body) )
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if ( is_null($body) || count($headers) > 1 )
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$transport = WP_Http::_getTransport();
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else
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$transport = WP_Http::_postTransport();
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@ -146,7 +209,8 @@ class WP_Http {
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* @access public
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* @since 2.7
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*
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* @param string $url The location of the site and page to retrieve.
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @return boolean
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@ -165,6 +229,8 @@ class WP_Http {
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* @access public
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* @since 2.7
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*
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @return boolean
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@ -183,6 +249,8 @@ class WP_Http {
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* @access public
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* @since 2.7
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*
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @return boolean
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@ -227,6 +295,8 @@ class WP_Http {
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/**
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* Whether the headers returned a redirect location.
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*
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* Actually just checks whether the location header exists.
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*
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* @access public
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* @static
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* @since 2.7
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@ -243,20 +313,27 @@ class WP_Http {
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/**
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* Transform header string into an array.
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*
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* Will overwrite the last header value, if it is not empty.
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* If an array is given, then it will be immediately passed through with no
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* changes. This is to prevent overhead in processing headers that don't
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* need to be processed. That and it is unknown what kind of effect
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* processing the array will have since there is no checking done on whether
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* ':' does not exist within the array string.
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*
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* Checking could be added, but it is easier and faster to just passed the
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* array through and assume that it has already been processed.
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*
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* @access public
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* @static
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* @since 2.7
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*
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* @param string|array $headers
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* @return array
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* @return array Processed string headers
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*/
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function processHeaders($headers) {
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if ( is_array($headers) )
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return $headers;
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$headers = explode("\n", str_replace(array("\r"), '', $headers) );
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$headers = explode("\n", str_replace(array("\r\n", "\r"), "\n", $headers) );
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$response = array('code' => 0, 'message' => '');
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@ -285,7 +362,8 @@ class WP_Http {
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/**
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* HTTP request method uses fsockopen function to retrieve the url.
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*
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* Preferred method since it works with all WordPress supported PHP versions.
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* This would be the preferred method, but the fsockopen implementation has the
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* most overhead of all the HTTP transport implementations.
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*
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* @package WordPress
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* @subpackage HTTP
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@ -293,15 +371,19 @@ class WP_Http {
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*/
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class WP_Http_Fsockopen {
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/**
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* Retrieve the location and set the class properties after the site has been retrieved.
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* Send a HTTP request to a URI using fsockopen().
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*
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* Does not support non-blocking mode.
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*
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* @see WP_Http::retrieve For default options descriptions.
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*
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* @since 2.7
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* @access public
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* @param string $url
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @param str|array $type Optional. Should be an already processed array with HTTP arguments.
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* @return boolean
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* @return array 'headers', 'body', and 'response' keys.
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*/
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function request($url, $args = array(), $headers = null, $body = null) {
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$defaults = array(
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@ -322,7 +404,7 @@ class WP_Http_Fsockopen {
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if ( ! isset($arrURL['port']) ) {
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if ( ($arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https') && extension_loaded('openssl') ) {
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$arrURL['host'] = 'ssl://' . $arrURL['host'];
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$arrURL['port'] = apply_filters('http_request_default_port', 443);
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$arrURL['port'] = apply_filters('http_request_port', 443);
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$secure_transport = true;
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} else {
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$arrURL['port'] = apply_filters('http_request_default_port', 80);
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@ -331,6 +413,8 @@ class WP_Http_Fsockopen {
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$arrURL['port'] = apply_filters('http_request_port', $arrURL['port']);
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}
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// There are issues with the HTTPS and SSL protocols that cause errors
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// that can be safely ignored and should be ignored.
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if ( true === $secure_transport )
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$error_reporting = error_reporting(0);
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@ -360,8 +444,10 @@ class WP_Http_Fsockopen {
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fwrite($handle, $strHeaders);
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if ( ! $r['blocking'] )
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return array( 'headers' => array(), 'body' => '', 'response' => array() );
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if ( ! $r['blocking'] ) {
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fclose($handle);
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return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
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}
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$strResponse = '';
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while ( ! feof($handle) )
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@ -410,24 +496,29 @@ class WP_Http_Fsockopen {
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* for $context support, but should still be okay, to write the headers, before
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* getting the response. Also requires that 'allow_url_fopen' to be enabled.
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*
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* Second preferred method for handling the retrieving the url for PHP 4.3+.
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*
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* @package WordPress
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* @subpackage HTTP
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* @since 2.7
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*/
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class WP_Http_Fopen {
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/**
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* Retrieve the location and set the class properties after the site has been retrieved.
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* Send a HTTP request to a URI using fopen().
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*
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* This transport does not support sending of headers and body, therefore
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* should not be used in the instances, where there is a body and headers.
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*
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* Notes: Does not support non-blocking mode. Ignores 'redirection' option.
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*
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* @see WP_Http::retrieve For default options descriptions.
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*
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* @access public
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* @since 2.7
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*
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* @param string $url
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* @param string $url URI resource.
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* @param str|array $args Optional. Override the defaults.
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
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* @param str|array $type Optional. Should be an already processed array with HTTP arguments.
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* @return boolean
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* @return array 'headers', 'body', and 'response' keys.
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*/
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function request($url, $args = array(), $headers = null, $body = null) {
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global $http_response_header;
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@ -453,13 +544,17 @@ class WP_Http_Fopen {
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if ( function_exists('stream_set_timeout') )
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stream_set_timeout($handle, apply_filters('http_request_timeout', $r['timeout']) );
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if ( ! $r['blocking'] )
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return array( 'headers' => array(), 'body' => '', 'response' => array() );
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if ( ! $r['blocking'] ) {
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fclose($handle);
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return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
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}
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$strResponse = '';
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while ( ! feof($handle) )
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$strResponse .= fread($handle, 4096);
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fclose($handle);
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$theHeaders = '';
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if ( function_exists('stream_get_meta_data') ) {
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$meta = stream_get_meta_data($handle);
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@ -467,9 +562,8 @@ class WP_Http_Fopen {
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} else {
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$theHeaders = $http_response_header;
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}
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fclose($handle);
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$processedHeaders = WP_Http::processHeaders($theHeaders);
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return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response']);
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}
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@ -501,7 +595,7 @@ class WP_Http_Fopen {
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*/
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class WP_Http_Streams {
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/**
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* Retrieve the location and set the class properties after the site has been retrieved.
|
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* Send a HTTP request to a URI using streams with fopen().
|
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*
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* @access public
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* @since 2.7
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@ -510,7 +604,7 @@ class WP_Http_Streams {
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* @param str|array $args Optional. Override the defaults.
|
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
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* @return boolean
|
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* @return array 'headers', 'body', and 'response' keys.
|
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*/
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function request($url, $args = array(), $headers = null, $body = null) {
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$defaults = array(
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@ -548,15 +642,17 @@ class WP_Http_Streams {
|
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if ( ! $handle)
|
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return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
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|
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if ( ! $r['blocking'] )
|
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return array( 'headers' => array(), 'body' => '', 'response' => array() );
|
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if ( ! $r['blocking'] ) {
|
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fclose($handle);
|
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return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
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}
|
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|
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$strResponse = stream_get_contents($handle);
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$meta = stream_get_meta_data($handle);
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$processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);
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fclose($handle);
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$processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);
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return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response']);
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}
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@ -583,10 +679,10 @@ class WP_Http_Streams {
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/**
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* HTTP request method uses HTTP extension to retrieve the url.
|
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*
|
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* Requires the HTTP extension to be installed.
|
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*
|
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* Last ditch effort to retrieve the URL before complete failure.
|
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* Does not support non-blocking requests.
|
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* Requires the HTTP extension to be installed. This would be the preferred
|
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* transport since it can handle a lot of the problems that forces the others to
|
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* use the HTTP version 1.0. Even if PHP 5.2+ is being used, it doesn't mean
|
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* that the HTTP extension will be enabled.
|
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*
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* @package WordPress
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* @subpackage HTTP
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@ -594,7 +690,9 @@ class WP_Http_Streams {
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*/
|
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class WP_Http_ExtHTTP {
|
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/**
|
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* Retrieve the location and set the class properties after the site has been retrieved.
|
||||
* Send a HTTP request to a URI using HTTP extension.
|
||||
*
|
||||
* Does not support non-blocking.
|
||||
*
|
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* @access public
|
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* @since 2.7
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@ -603,7 +701,7 @@ class WP_Http_ExtHTTP {
|
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* @param str|array $args Optional. Override the defaults.
|
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* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
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* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
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* @return boolean
|
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* @return array 'headers', 'body', and 'response' keys.
|
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*/
|
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function request($url, $args = array(), $headers = null, $body = null) {
|
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global $wp_version;
|
||||
@ -611,13 +709,20 @@ class WP_Http_ExtHTTP {
|
||||
$defaults = array(
|
||||
'method' => 'GET', 'timeout' => 3,
|
||||
'redirection' => 5, 'httpversion' => '1.0',
|
||||
'blocking' => true, 'user_agent' => apply_filters('http_headers_useragent', 'WordPress/' . $wp_version)
|
||||
'blocking' => true
|
||||
);
|
||||
|
||||
$r = wp_parse_args( $args, $defaults );
|
||||
|
||||
if ( isset($headers['User-Agent']) )
|
||||
if ( isset($headers['User-Agent']) ) {
|
||||
$r['user-agent'] = $headers['User-Agent'];
|
||||
unset($headers['User-Agent']);
|
||||
} else if( isset($headers['user-agent']) ) {
|
||||
$r['user-agent'] = $headers['user-agent'];
|
||||
unset($headers['user-agent']);
|
||||
} else {
|
||||
$r['user-agent'] = apply_filters('http_headers_useragent', 'WordPress/' . $wp_version );
|
||||
}
|
||||
|
||||
switch ( $r['method'] ) {
|
||||
case 'GET':
|
||||
@ -639,9 +744,9 @@ class WP_Http_ExtHTTP {
|
||||
$url = str_replace($arrURL['scheme'], 'http', $url);
|
||||
|
||||
$options = array(
|
||||
'timeout' => $this->timeout,
|
||||
'connecttimeout' => apply_filters('http_request_stream_timeout', $this->timeout),
|
||||
'redirect' => apply_filters('http_request_redirect', 3),
|
||||
'timeout' => $r['timeout'],
|
||||
'connecttimeout' => $r['timeout'],
|
||||
'redirect' => $r['redirection'],
|
||||
'useragent' => $r['user_agent'],
|
||||
'headers' => $headers,
|
||||
);
|
||||
@ -651,6 +756,9 @@ class WP_Http_ExtHTTP {
|
||||
if ( false === $strResponse )
|
||||
return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']);
|
||||
|
||||
if ( ! $r['blocking'] )
|
||||
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
||||
|
||||
list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);
|
||||
$theHeaders = WP_Http::processHeaders($theHeaders);
|
||||
|
||||
@ -677,6 +785,109 @@ class WP_Http_ExtHTTP {
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* HTTP request method uses Curl extension to retrieve the url.
|
||||
*
|
||||
* Requires the Curl extension to be installed.
|
||||
*
|
||||
* @package WordPress
|
||||
* @subpackage HTTP
|
||||
* @since 2.7
|
||||
*/
|
||||
class WP_Http_Curl {
|
||||
/**
|
||||
* Send a HTTP request to a URI using cURL extension.
|
||||
*
|
||||
* @access public
|
||||
* @since 2.7
|
||||
*
|
||||
* @param string $url
|
||||
* @param str|array $args Optional. Override the defaults.
|
||||
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
||||
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
||||
* @return array 'headers', 'body', and 'response' keys.
|
||||
*/
|
||||
function request($url, $args = array(), $headers = null, $body = null) {
|
||||
global $wp_version;
|
||||
|
||||
$defaults = array(
|
||||
'method' => 'GET', 'timeout' => 3,
|
||||
'redirection' => 5, 'httpversion' => '1.0',
|
||||
'blocking' => true
|
||||
);
|
||||
|
||||
$r = wp_parse_args( $args, $defaults );
|
||||
|
||||
if ( isset($headers['User-Agent']) ) {
|
||||
$r['user-agent'] = $headers['User-Agent'];
|
||||
unset($headers['User-Agent']);
|
||||
} else if( isset($headers['user-agent']) ) {
|
||||
$r['user-agent'] = $headers['user-agent'];
|
||||
unset($headers['user-agent']);
|
||||
} else {
|
||||
$r['user-agent'] = apply_filters('http_headers_useragent', 'WordPress/' . $wp_version );
|
||||
}
|
||||
|
||||
$handle = curl_init();
|
||||
curl_setopt( $handle, CURLOPT_URL, $url);
|
||||
|
||||
if ( true === $r['blocking'] ) {
|
||||
curl_setopt( $handle, CURLOPT_HEADER, true );
|
||||
} else {
|
||||
curl_setopt( $handle, CURLOPT_HEADER, false );
|
||||
curl_setopt( $handle, CURLOPT_NOBODY, true );
|
||||
}
|
||||
|
||||
curl_setopt( $handle, CURLOPT_RETURNTRANSFER, 1 );
|
||||
curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );
|
||||
curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, 1 );
|
||||
curl_setopt( $handle, CURLOPT_TIMEOUT, $r['timeout'] );
|
||||
curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true );
|
||||
curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] );
|
||||
|
||||
if( ! is_null($headers) )
|
||||
curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );
|
||||
|
||||
if ( $r['httpversion'] == '1.0' )
|
||||
curl_setopt( $headle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );
|
||||
else
|
||||
curl_setopt( $headle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
|
||||
|
||||
if ( ! $r['blocking'] ) {
|
||||
curl_close( $handle );
|
||||
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
||||
}
|
||||
|
||||
$theResponse = curl_exec( $handle );
|
||||
|
||||
list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);
|
||||
$theHeaders = WP_Http::processHeaders($theHeaders);
|
||||
|
||||
$response = array();
|
||||
$response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE );
|
||||
$response['message'] = get_status_header_desc($response['code']);
|
||||
|
||||
curl_close( $handle );
|
||||
|
||||
return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response);
|
||||
}
|
||||
|
||||
/**
|
||||
* Whether this class can be used for retrieving an URL.
|
||||
*
|
||||
* @static
|
||||
* @since 2.7
|
||||
*
|
||||
* @return boolean False means this class can not be used, true means it can.
|
||||
*/
|
||||
function test() {
|
||||
if ( function_exists('curl_init') )
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the initialized WP_Http Object
|
||||
*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user