418 lines
12 KiB
PHP
418 lines
12 KiB
PHP
|
<?php
|
||
|
|
/**
|
||
|
|
* HTTP API: WP_Http_Curl class
|
||
|
|
*
|
||
|
|
* @package WordPress
|
||
|
|
* @subpackage HTTP
|
||
|
|
* @since 4.4.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Core class used to integrate Curl as an HTTP transport.
|
||
|
|
*
|
||
|
|
* HTTP request method uses Curl extension to retrieve the url.
|
||
|
|
*
|
||
|
|
* Requires the Curl extension to be installed.
|
||
|
|
*
|
||
|
|
* @since 2.7.0
|
||
|
|
* @deprecated 6.4.0 Use WP_Http
|
||
|
|
* @see WP_Http
|
||
|
|
*/
|
||
|
|
#[AllowDynamicProperties]
|
||
|
|
class WP_Http_Curl {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Temporary header storage for during requests.
|
||
|
|
*
|
||
|
|
* @since 3.2.0
|
||
|
|
* @var string
|
||
|
|
*/
|
||
|
|
private $headers = '';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Temporary body storage for during requests.
|
||
|
|
*
|
||
|
|
* @since 3.6.0
|
||
|
|
* @var string
|
||
|
|
*/
|
||
|
|
private $body = '';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The maximum amount of data to receive from the remote server.
|
||
|
|
*
|
||
|
|
* @since 3.6.0
|
||
|
|
* @var int|false
|
||
|
|
*/
|
||
|
|
private $max_body_length = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The file resource used for streaming to file.
|
||
|
|
*
|
||
|
|
* @since 3.6.0
|
||
|
|
* @var resource|false
|
||
|
|
*/
|
||
|
|
private $stream_handle = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The total bytes written in the current request.
|
||
|
|
*
|
||
|
|
* @since 4.1.0
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
private $bytes_written_total = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Send a HTTP request to a URI using cURL extension.
|
||
|
|
*
|
||
|
|
* @since 2.7.0
|
||
|
|
*
|
||
|
|
* @param string $url The request URL.
|
||
|
|
* @param string|array $args Optional. Override the defaults.
|
||
|
|
* @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
|
||
|
|
*/
|
||
|
|
public function request( $url, $args = array() ) {
|
||
|
|
$defaults = array(
|
||
|
|
'method' => 'GET',
|
||
|
|
'timeout' => 5,
|
||
|
|
'redirection' => 5,
|
||
|
|
'httpversion' => '1.0',
|
||
|
|
'blocking' => true,
|
||
|
|
'headers' => array(),
|
||
|
|
'body' => null,
|
||
|
|
'cookies' => array(),
|
||
|
|
'decompress' => false,
|
||
|
|
'stream' => false,
|
||
|
|
'filename' => null,
|
||
|
|
);
|
||
|
|
|
||
|
|
$parsed_args = wp_parse_args( $args, $defaults );
|
||
|
|
|
||
|
|
if ( isset( $parsed_args['headers']['User-Agent'] ) ) {
|
||
|
|
$parsed_args['user-agent'] = $parsed_args['headers']['User-Agent'];
|
||
|
|
unset( $parsed_args['headers']['User-Agent'] );
|
||
|
|
} elseif ( isset( $parsed_args['headers']['user-agent'] ) ) {
|
||
|
|
$parsed_args['user-agent'] = $parsed_args['headers']['user-agent'];
|
||
|
|
unset( $parsed_args['headers']['user-agent'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Construct Cookie: header if any cookies are set.
|
||
|
|
WP_Http::buildCookieHeader( $parsed_args );
|
||
|
|
|
||
|
|
$handle = curl_init();
|
||
|
|
|
||
|
|
// cURL offers really easy proxy support.
|
||
|
|
$proxy = new WP_HTTP_Proxy();
|
||
|
|
|
||
|
|
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
|
||
|
|
|
||
|
|
curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
|
||
|
|
curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
|
||
|
|
curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );
|
||
|
|
|
||
|
|
if ( $proxy->use_authentication() ) {
|
||
|
|
curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );
|
||
|
|
curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$is_local = isset( $parsed_args['local'] ) && $parsed_args['local'];
|
||
|
|
$ssl_verify = isset( $parsed_args['sslverify'] ) && $parsed_args['sslverify'];
|
||
|
|
if ( $is_local ) {
|
||
|
|
/** This filter is documented in wp-includes/class-wp-http-streams.php */
|
||
|
|
$ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify, $url );
|
||
|
|
} elseif ( ! $is_local ) {
|
||
|
|
/** This filter is documented in wp-includes/class-wp-http.php */
|
||
|
|
$ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify, $url );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since.
|
||
|
|
* a value of 0 will allow an unlimited timeout.
|
||
|
|
*/
|
||
|
|
$timeout = (int) ceil( $parsed_args['timeout'] );
|
||
|
|
curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout );
|
||
|
|
curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );
|
||
|
|
|
||
|
|
curl_setopt( $handle, CURLOPT_URL, $url );
|
||
|
|
curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
|
||
|
|
curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, ( true === $ssl_verify ) ? 2 : false );
|
||
|
|
curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify );
|
||
|
|
|
||
|
|
if ( $ssl_verify ) {
|
||
|
|
curl_setopt( $handle, CURLOPT_CAINFO, $parsed_args['sslcertificates'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
curl_setopt( $handle, CURLOPT_USERAGENT, $parsed_args['user-agent'] );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The option doesn't work with safe mode or when open_basedir is set, and there's
|
||
|
|
* a bug #17490 with redirected POST requests, so handle redirections outside Curl.
|
||
|
|
*/
|
||
|
|
curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, false );
|
||
|
|
curl_setopt( $handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS );
|
||
|
|
|
||
|
|
switch ( $parsed_args['method'] ) {
|
||
|
|
case 'HEAD':
|
||
|
|
curl_setopt( $handle, CURLOPT_NOBODY, true );
|
||
|
|
break;
|
||
|
|
case 'POST':
|
||
|
|
curl_setopt( $handle, CURLOPT_POST, true );
|
||
|
|
curl_setopt( $handle, CURLOPT_POSTFIELDS, $parsed_args['body'] );
|
||
|
|
break;
|
||
|
|
case 'PUT':
|
||
|
|
curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );
|
||
|
|
curl_setopt( $handle, CURLOPT_POSTFIELDS, $parsed_args['body'] );
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, $parsed_args['method'] );
|
||
|
|
if ( ! is_null( $parsed_args['body'] ) ) {
|
||
|
|
curl_setopt( $handle, CURLOPT_POSTFIELDS, $parsed_args['body'] );
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( true === $parsed_args['blocking'] ) {
|
||
|
|
curl_setopt( $handle, CURLOPT_HEADERFUNCTION, array( $this, 'stream_headers' ) );
|
||
|
|
curl_setopt( $handle, CURLOPT_WRITEFUNCTION, array( $this, 'stream_body' ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
curl_setopt( $handle, CURLOPT_HEADER, false );
|
||
|
|
|
||
|
|
if ( isset( $parsed_args['limit_response_size'] ) ) {
|
||
|
|
$this->max_body_length = (int) $parsed_args['limit_response_size'];
|
||
|
|
} else {
|
||
|
|
$this->max_body_length = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If streaming to a file open a file handle, and setup our curl streaming handler.
|
||
|
|
if ( $parsed_args['stream'] ) {
|
||
|
|
if ( ! WP_DEBUG ) {
|
||
|
|
$this->stream_handle = @fopen( $parsed_args['filename'], 'w+' );
|
||
|
|
} else {
|
||
|
|
$this->stream_handle = fopen( $parsed_args['filename'], 'w+' );
|
||
|
|
}
|
||
|
|
if ( ! $this->stream_handle ) {
|
||
|
|
return new WP_Error(
|
||
|
|
'http_request_failed',
|
||
|
|
sprintf(
|
||
|
|
/* translators: 1: fopen(), 2: File name. */
|
||
|
|
__( 'Could not open handle for %1$s to %2$s.' ),
|
||
|
|
'fopen()',
|
||
|
|
$parsed_args['filename']
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$this->stream_handle = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! empty( $parsed_args['headers'] ) ) {
|
||
|
|
// cURL expects full header strings in each element.
|
||
|
|
$headers = array();
|
||
|
|
foreach ( $parsed_args['headers'] as $name => $value ) {
|
||
|
|
$headers[] = "{$name}: $value";
|
||
|
|
}
|
||
|
|
curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( '1.0' === $parsed_args['httpversion'] ) {
|
||
|
|
curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );
|
||
|
|
} else {
|
||
|
|
curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fires before the cURL request is executed.
|
||
|
|
*
|
||
|
|
* Cookies are not currently handled by the HTTP API. This action allows
|
||
|
|
* plugins to handle cookies themselves.
|
||
|
|
*
|
||
|
|
* @since 2.8.0
|
||
|
|
*
|
||
|
|
* @param resource $handle The cURL handle returned by curl_init() (passed by reference).
|
||
|
|
* @param array $parsed_args The HTTP request arguments.
|
||
|
|
* @param string $url The request URL.
|
||
|
|
*/
|
||
|
|
do_action_ref_array( 'http_api_curl', array( &$handle, $parsed_args, $url ) );
|
||
|
|
|
||
|
|
// We don't need to return the body, so don't. Just execute request and return.
|
||
|
|
if ( ! $parsed_args['blocking'] ) {
|
||
|
|
curl_exec( $handle );
|
||
|
|
|
||
|
|
$curl_error = curl_error( $handle );
|
||
|
|
if ( $curl_error ) {
|
||
|
|
curl_close( $handle );
|
||
|
|
return new WP_Error( 'http_request_failed', $curl_error );
|
||
|
|
}
|
||
|
|
if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ), true ) ) {
|
||
|
|
curl_close( $handle );
|
||
|
|
return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
curl_close( $handle );
|
||
|
|
return array(
|
||
|
|
'headers' => array(),
|
||
|
|
'body' => '',
|
||
|
|
'response' => array(
|
||
|
|
'code' => false,
|
||
|
|
'message' => false,
|
||
|
|
),
|
||
|
|
'cookies' => array(),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
curl_exec( $handle );
|
||
|
|
|
||
|
|
$processed_headers = WP_Http::processHeaders( $this->headers, $url );
|
||
|
|
$body = $this->body;
|
||
|
|
$bytes_written_total = $this->bytes_written_total;
|
||
|
|
|
||
|
|
$this->headers = '';
|
||
|
|
$this->body = '';
|
||
|
|
$this->bytes_written_total = 0;
|
||
|
|
|
||
|
|
$curl_error = curl_errno( $handle );
|
||
|
|
|
||
|
|
// If an error occurred, or, no response.
|
||
|
|
if ( $curl_error || ( 0 === strlen( $body ) && empty( $processed_headers['headers'] ) ) ) {
|
||
|
|
if ( CURLE_WRITE_ERROR /* 23 */ === $curl_error ) {
|
||
|
|
if ( ! $this->max_body_length || $this->max_body_length !== $bytes_written_total ) {
|
||
|
|
if ( $parsed_args['stream'] ) {
|
||
|
|
curl_close( $handle );
|
||
|
|
fclose( $this->stream_handle );
|
||
|
|
return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
|
||
|
|
} else {
|
||
|
|
curl_close( $handle );
|
||
|
|
return new WP_Error( 'http_request_failed', curl_error( $handle ) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$curl_error = curl_error( $handle );
|
||
|
|
if ( $curl_error ) {
|
||
|
|
curl_close( $handle );
|
||
|
|
return new WP_Error( 'http_request_failed', $curl_error );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ), true ) ) {
|
||
|
|
curl_close( $handle );
|
||
|
|
return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
curl_close( $handle );
|
||
|
|
|
||
|
|
if ( $parsed_args['stream'] ) {
|
||
|
|
fclose( $this->stream_handle );
|
||
|
|
}
|
||
|
|
|
||
|
|
$response = array(
|
||
|
|
'headers' => $processed_headers['headers'],
|
||
|
|
'body' => null,
|
||
|
|
'response' => $processed_headers['response'],
|
||
|
|
'cookies' => $processed_headers['cookies'],
|
||
|
|
'filename' => $parsed_args['filename'],
|
||
|
|
);
|
||
|
|
|
||
|
|
// Handle redirects.
|
||
|
|
$redirect_response = WP_Http::handle_redirects( $url, $parsed_args, $response );
|
||
|
|
if ( false !== $redirect_response ) {
|
||
|
|
return $redirect_response;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( true === $parsed_args['decompress']
|
||
|
|
&& true === WP_Http_Encoding::should_decode( $processed_headers['headers'] )
|
||
|
|
) {
|
||
|
|
$body = WP_Http_Encoding::decompress( $body );
|
||
|
|
}
|
||
|
|
|
||
|
|
$response['body'] = $body;
|
||
|
|
|
||
|
|
return $response;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Grabs the headers of the cURL request.
|
||
|
|
*
|
||
|
|
* Each header is sent individually to this callback, and is appended to the `$header` property
|
||
|
|
* for temporary storage.
|
||
|
|
*
|
||
|
|
* @since 3.2.0
|
||
|
|
*
|
||
|
|
* @param resource $handle cURL handle.
|
||
|
|
* @param string $headers cURL request headers.
|
||
|
|
* @return int Length of the request headers.
|
||
|
|
*/
|
||
|
|
private function stream_headers( $handle, $headers ) {
|
||
|
|
$this->headers .= $headers;
|
||
|
|
return strlen( $headers );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Grabs the body of the cURL request.
|
||
|
|
*
|
||
|
|
* The contents of the document are passed in chunks, and are appended to the `$body`
|
||
|
|
* property for temporary storage. Returning a length shorter than the length of
|
||
|
|
* `$data` passed in will cause cURL to abort the request with `CURLE_WRITE_ERROR`.
|
||
|
|
*
|
||
|
|
* @since 3.6.0
|
||
|
|
*
|
||
|
|
* @param resource $handle cURL handle.
|
||
|
|
* @param string $data cURL request body.
|
||
|
|
* @return int Total bytes of data written.
|
||
|
|
*/
|
||
|
|
private function stream_body( $handle, $data ) {
|
||
|
|
$data_length = strlen( $data );
|
||
|
|
|
||
|
|
if ( $this->max_body_length && ( $this->bytes_written_total + $data_length ) > $this->max_body_length ) {
|
||
|
|
$data_length = ( $this->max_body_length - $this->bytes_written_total );
|
||
|
|
$data = substr( $data, 0, $data_length );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $this->stream_handle ) {
|
||
|
|
$bytes_written = fwrite( $this->stream_handle, $data );
|
||
|
|
} else {
|
||
|
|
$this->body .= $data;
|
||
|
|
$bytes_written = $data_length;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->bytes_written_total += $bytes_written;
|
||
|
|
|
||
|
|
// Upon event of this function returning less than strlen( $data ) curl will error with CURLE_WRITE_ERROR.
|
||
|
|
return $bytes_written;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines whether this class can be used for retrieving a URL.
|
||
|
|
*
|
||
|
|
* @since 2.7.0
|
||
|
|
*
|
||
|
|
* @param array $args Optional. Array of request arguments. Default empty array.
|
||
|
|
* @return bool False means this class can not be used, true means it can.
|
||
|
|
*/
|
||
|
|
public static function test( $args = array() ) {
|
||
|
|
if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$is_ssl = isset( $args['ssl'] ) && $args['ssl'];
|
||
|
|
|
||
|
|
if ( $is_ssl ) {
|
||
|
|
$curl_version = curl_version();
|
||
|
|
// Check whether this cURL version support SSL requests.
|
||
|
|
if ( ! ( CURL_VERSION_SSL & $curl_version['features'] ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters whether cURL can be used as a transport for retrieving a URL.
|
||
|
|
*
|
||
|
|
* @since 2.7.0
|
||
|
|
*
|
||
|
|
* @param bool $use_class Whether the class can be used. Default true.
|
||
|
|
* @param array $args An array of request arguments.
|
||
|
|
*/
|
||
|
|
return apply_filters( 'use_curl_transport', true, $args );
|
||
|
|
}
|
||
|
|
}
|