/**
* WordPress List utility class
*
* @package WordPress
* @since 4.7.0
*/
/**
* List utility.
*
* Utility class to handle operations on an array of objects or arrays.
*
* @since 4.7.0
*/
#[AllowDynamicProperties]
class WP_List_Util {
/**
* The input array.
*
* @since 4.7.0
* @var array
*/
private $input = array();
/**
* The output array.
*
* @since 4.7.0
* @var array
*/
private $output = array();
/**
* Temporary arguments for sorting.
*
* @since 4.7.0
* @var string[]
*/
private $orderby = array();
/**
* Constructor.
*
* Sets the input array.
*
* @since 4.7.0
*
* @param array $input Array to perform operations on.
*/
public function __construct( $input ) {
$this->output = $input;
$this->input = $input;
}
/**
* Returns the original input array.
*
* @since 4.7.0
*
* @return array The input array.
*/
public function get_input() {
return $this->input;
}
/**
* Returns the output array.
*
* @since 4.7.0
*
* @return array The output array.
*/
public function get_output() {
return $this->output;
}
/**
* Filters the list, based on a set of key => value arguments.
*
* Retrieves the objects from the list that match the given arguments.
* Key represents property name, and value represents property value.
*
* If an object has more properties than those specified in arguments,
* that will not disqualify it. When using the 'AND' operator,
* any missing properties will disqualify it.
*
* @since 4.7.0
*
* @param array $args Optional. An array of key => value arguments to match
* against each object. Default empty array.
* @param string $operator Optional. The logical operation to perform. 'AND' means
* all elements from the array must match. 'OR' means only
* one element needs to match. 'NOT' means no elements may
* match. Default 'AND'.
* @return array Array of found values.
*/
public function filter( $args = array(), $operator = 'AND' ) {
if ( empty( $args ) ) {
return $this->output;
}
$operator = strtoupper( $operator );
if ( ! in_array( $operator, array( 'AND', 'OR', 'NOT' ), true ) ) {
$this->output = array();
return $this->output;
}
$count = count( $args );
$filtered = array();
foreach ( $this->output as $key => $obj ) {
$matched = 0;
foreach ( $args as $m_key => $m_value ) {
if ( is_array( $obj ) ) {
// Treat object as an array.
if ( array_key_exists( $m_key, $obj ) && ( $m_value == $obj[ $m_key ] ) ) {
++$matched;
}
} elseif ( is_object( $obj ) ) {
// Treat object as an object.
if ( isset( $obj->{$m_key} ) && ( $m_value == $obj->{$m_key} ) ) {
++$matched;
}
}
}
if ( ( 'AND' === $operator && $matched === $count )
|| ( 'OR' === $operator && $matched > 0 )
|| ( 'NOT' === $operator && 0 === $matched )
) {
$filtered[ $key ] = $obj;
}
}
$this->output = $filtered;
return $this->output;
}
/**
* Plucks a certain field out of each element in the input array.
*
* This has the same functionality and prototype of
* array_column() (PHP 5.5) but also supports objects.
*
* @since 4.7.0
*
* @param int|string $field Field to fetch from the object or array.
* @param int|string $index_key Optional. Field from the element to use as keys for the new array.
* Default null.
* @return array Array of found values. If `$index_key` is set, an array of found values with keys
* corresponding to `$index_key`. If `$index_key` is null, array keys from the original
* `$list` will be preserved in the results.
*/
public function pluck( $field, $index_key = null ) {
$newlist = array();
if ( ! $index_key ) {
/*
* This is simple. Could at some point wrap array_column()
* if we knew we had an array of arrays.
*/
foreach ( $this->output as $key => $value ) {
if ( is_object( $value ) ) {
$newlist[ $key ] = $value->$field;
} elseif ( is_array( $value ) ) {
$newlist[ $key ] = $value[ $field ];
} else {
_doing_it_wrong(
__METHOD__,
__( 'Values for the input array must be either objects or arrays.' ),
'6.2.0'
);
}
}
$this->output = $newlist;
return $this->output;
}
/*
* When index_key is not set for a particular item, push the value
* to the end of the stack. This is how array_column() behaves.
*/
foreach ( $this->output as $value ) {
if ( is_object( $value ) ) {
if ( isset( $value->$index_key ) ) {
$newlist[ $value->$index_key ] = $value->$field;
} else {
$newlist[] = $value->$field;
}
} elseif ( is_array( $value ) ) {
if ( isset( $value[ $index_key ] ) ) {
$newlist[ $value[ $index_key ] ] = $value[ $field ];
} else {
$newlist[] = $value[ $field ];
}
} else {
_doing_it_wrong(
__METHOD__,
__( 'Values for the input array must be either objects or arrays.' ),
'6.2.0'
);
}
}
$this->output = $newlist;
return $this->output;
}
/**
* Sorts the input array based on one or more orderby arguments.
*
* @since 4.7.0
*
* @param string|array $orderby Optional. Either the field name to order by or an array
* of multiple orderby fields as `$orderby => $order`.
* Default empty array.
* @param string $order Optional. Either 'ASC' or 'DESC'. Only used if `$orderby`
* is a string. Default 'ASC'.
* @param bool $preserve_keys Optional. Whether to preserve keys. Default false.
* @return array The sorted array.
*/
public function sort( $orderby = array(), $order = 'ASC', $preserve_keys = false ) {
if ( empty( $orderby ) ) {
return $this->output;
}
if ( is_string( $orderby ) ) {
$orderby = array( $orderby => $order );
}
foreach ( $orderby as $field => $direction ) {
$orderby[ $field ] = 'DESC' === strtoupper( $direction ) ? 'DESC' : 'ASC';
}
$this->orderby = $orderby;
if ( $preserve_keys ) {
uasort( $this->output, array( $this, 'sort_callback' ) );
} else {
usort( $this->output, array( $this, 'sort_callback' ) );
}
$this->orderby = array();
return $this->output;
}
/**
* Callback to sort an array by specific fields.
*
* @since 4.7.0
*
* @see WP_List_Util::sort()
*
* @param object|array $a One object to compare.
* @param object|array $b The other object to compare.
* @return int 0 if both objects equal. -1 if second object should come first, 1 otherwise.
*/
private function sort_callback( $a, $b ) {
if ( empty( $this->orderby ) ) {
return 0;
}
$a = (array) $a;
$b = (array) $b;
foreach ( $this->orderby as $field => $direction ) {
if ( ! isset( $a[ $field ] ) || ! isset( $b[ $field ] ) ) {
continue;
}
if ( $a[ $field ] == $b[ $field ] ) {
continue;
}
$results = 'DESC' === $direction ? array( 1, -1 ) : array( -1, 1 );
if ( is_numeric( $a[ $field ] ) && is_numeric( $b[ $field ] ) ) {
return ( $a[ $field ] < $b[ $field ] ) ? $results[0] : $results[1];
}
return 0 > strcmp( $a[ $field ], $b[ $field ] ) ? $results[0] : $results[1];
}
return 0;
}
}
/**
* HTTP API: WP_Http_Streams class
*
* @package WordPress
* @subpackage HTTP
* @since 4.4.0
*/
/**
* Core class used to integrate PHP Streams as an HTTP transport.
*
* @since 2.7.0
* @since 3.7.0 Combined with the fsockopen transport and switched to `stream_socket_client()`.
* @deprecated 6.4.0 Use WP_Http
* @see WP_Http
*/
#[AllowDynamicProperties]
class WP_Http_Streams {
/**
* Send a HTTP request to a URI using PHP Streams.
*
* @see WP_Http::request() For default options descriptions.
*
* @since 2.7.0
* @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
*
* @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 );
$parsed_url = parse_url( $url );
$connect_host = $parsed_url['host'];
$secure_transport = ( 'ssl' === $parsed_url['scheme'] || 'https' === $parsed_url['scheme'] );
if ( ! isset( $parsed_url['port'] ) ) {
if ( 'ssl' === $parsed_url['scheme'] || 'https' === $parsed_url['scheme'] ) {
$parsed_url['port'] = 443;
$secure_transport = true;
} else {
$parsed_url['port'] = 80;
}
}
// Always pass a path, defaulting to the root in cases such as http://example.com.
if ( ! isset( $parsed_url['path'] ) ) {
$parsed_url['path'] = '/';
}
if ( isset( $parsed_args['headers']['Host'] ) || isset( $parsed_args['headers']['host'] ) ) {
if ( isset( $parsed_args['headers']['Host'] ) ) {
$parsed_url['host'] = $parsed_args['headers']['Host'];
} else {
$parsed_url['host'] = $parsed_args['headers']['host'];
}
unset( $parsed_args['headers']['Host'], $parsed_args['headers']['host'] );
}
/*
* Certain versions of PHP have issues with 'localhost' and IPv6, It attempts to connect
* to ::1, which fails when the server is not set up for it. For compatibility, always
* connect to the IPv4 address.
*/
if ( 'localhost' === strtolower( $connect_host ) ) {
$connect_host = '127.0.0.1';
}
$connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host;
$is_local = isset( $parsed_args['local'] ) && $parsed_args['local'];
$ssl_verify = isset( $parsed_args['sslverify'] ) && $parsed_args['sslverify'];
if ( $is_local ) {
/**
* Filters whether SSL should be verified for local HTTP API requests.
*
* @since 2.8.0
* @since 5.1.0 The `$url` parameter was added.
*
* @param bool|string $ssl_verify Boolean to control whether to verify the SSL connection
* or path to an SSL certificate.
* @param string $url The request URL.
*/
$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 );
}
$proxy = new WP_HTTP_Proxy();
$context = stream_context_create(
array(
'ssl' => array(
'verify_peer' => $ssl_verify,
// 'CN_match' => $parsed_url['host'], // This is handled by self::verify_ssl_certificate().
'capture_peer_cert' => $ssl_verify,
'SNI_enabled' => true,
'cafile' => $parsed_args['sslcertificates'],
'allow_self_signed' => ! $ssl_verify,
),
)
);
$timeout = (int) floor( $parsed_args['timeout'] );
$utimeout = 0;
if ( $timeout !== (int) $parsed_args['timeout'] ) {
$utimeout = 1000000 * $parsed_args['timeout'] % 1000000;
}
$connect_timeout = max( $timeout, 1 );
// Store error number.
$connection_error = null;
// Store error string.
$connection_error_str = null;
if ( ! WP_DEBUG ) {
// In the event that the SSL connection fails, silence the many PHP warnings.
if ( $secure_transport ) {
$error_reporting = error_reporting( 0 );
}
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$handle = @stream_socket_client(
'tcp://' . $proxy->host() . ':' . $proxy->port(),
$connection_error,
$connection_error_str,
$connect_timeout,
STREAM_CLIENT_CONNECT,
$context
);
} else {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$handle = @stream_socket_client(
$connect_host . ':' . $parsed_url['port'],
$connection_error,
$connection_error_str,
$connect_timeout,
STREAM_CLIENT_CONNECT,
$context
);
}
if ( $secure_transport ) {
error_reporting( $error_reporting );
}
} else {
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
$handle = stream_socket_client(
'tcp://' . $proxy->host() . ':' . $proxy->port(),
$connection_error,
$connection_error_str,
$connect_timeout,
STREAM_CLIENT_CONNECT,
$context
);
} else {
$handle = stream_socket_client(
$connect_host . ':' . $parsed_url['port'],
$connection_error,
$connection_error_str,
$connect_timeout,
STREAM_CLIENT_CONNECT,
$context
);
}
}
if ( false === $handle ) {
// SSL connection failed due to expired/invalid cert, or, OpenSSL configuration is broken.
if ( $secure_transport && 0 === $connection_error && '' === $connection_error_str ) {
return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );
}
return new WP_Error( 'http_request_failed', $connection_error . ': ' . $connection_error_str );
}
// Verify that the SSL certificate is valid for this request.
if ( $secure_transport && $ssl_verify && ! $proxy->is_enabled() ) {
if ( ! self::verify_ssl_certificate( $handle, $parsed_url['host'] ) ) {
return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );
}
}
stream_set_timeout( $handle, $timeout, $utimeout );
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { // Some proxies require full URL in this field.
$request_path = $url;
} else {
$request_path = $parsed_url['path'] . ( isset( $parsed_url['query'] ) ? '?' . $parsed_url['query'] : '' );
}
$headers = strtoupper( $parsed_args['method'] ) . ' ' . $request_path . ' HTTP/' . $parsed_args['httpversion'] . "\r\n";
$include_port_in_host_header = (
( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
|| ( 'http' === $parsed_url['scheme'] && 80 !== $parsed_url['port'] )
|| ( 'https' === $parsed_url['scheme'] && 443 !== $parsed_url['port'] )
);
if ( $include_port_in_host_header ) {
$headers .= 'Host: ' . $parsed_url['host'] . ':' . $parsed_url['port'] . "\r\n";
} else {
$headers .= 'Host: ' . $parsed_url['host'] . "\r\n";
}
if ( isset( $parsed_args['user-agent'] ) ) {
$headers .= 'User-agent: ' . $parsed_args['user-agent'] . "\r\n";
}
if ( is_array( $parsed_args['headers'] ) ) {
foreach ( (array) $parsed_args['headers'] as $header => $header_value ) {
$headers .= $header . ': ' . $header_value . "\r\n";
}
} else {
$headers .= $parsed_args['headers'];
}
if ( $proxy->use_authentication() ) {
$headers .= $proxy->authentication_header() . "\r\n";
}
$headers .= "\r\n";
if ( ! is_null( $parsed_args['body'] ) ) {
$headers .= $parsed_args['body'];
}
fwrite( $handle, $headers );
if ( ! $parsed_args['blocking'] ) {
stream_set_blocking( $handle, 0 );
fclose( $handle );
return array(
'headers' => array(),
'body' => '',
'response' => array(
'code' => false,
'message' => false,
),
'cookies' => array(),
);
}
$response = '';
$body_started = false;
$keep_reading = true;
$block_size = 4096;
if ( isset( $parsed_args['limit_response_size'] ) ) {
$block_size = min( $block_size, $parsed_args['limit_response_size'] );
}
// If streaming to a file setup the file handle.
if ( $parsed_args['stream'] ) {
if ( ! WP_DEBUG ) {
$stream_handle = @fopen( $parsed_args['filename'], 'w+' );
} else {
$stream_handle = fopen( $parsed_args['filename'], 'w+' );
}
if ( ! $stream_handle ) {
return new WP_Error(
'http_request_failed',
sprintf(
/* translators: 1: fopen(), 2: File name. */
__( 'Could not open handle for %1$s to %2$s.' ),
'fopen()',
$parsed_args['filename']
)
);
}
$bytes_written = 0;
while ( ! feof( $handle ) && $keep_reading ) {
$block = fread( $handle, $block_size );
if ( ! $body_started ) {
$response .= $block;
if ( strpos( $response, "\r\n\r\n" ) ) {
$processed_response = WP_Http::processResponse( $response );
$body_started = true;
$block = $processed_response['body'];
unset( $response );
$processed_response['body'] = '';
}
}
$this_block_size = strlen( $block );
if ( isset( $parsed_args['limit_response_size'] )
&& ( $bytes_written + $this_block_size ) > $parsed_args['limit_response_size']
) {
$this_block_size = ( $parsed_args['limit_response_size'] - $bytes_written );
$block = substr( $block, 0, $this_block_size );
}
$bytes_written_to_file = fwrite( $stream_handle, $block );
if ( $bytes_written_to_file !== $this_block_size ) {
fclose( $handle );
fclose( $stream_handle );
return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
}
$bytes_written += $bytes_written_to_file;
$keep_reading = (
! isset( $parsed_args['limit_response_size'] )
|| $bytes_written < $parsed_args['limit_response_size']
);
}
fclose( $stream_handle );
} else {
$header_length = 0;
while ( ! feof( $handle ) && $keep_reading ) {
$block = fread( $handle, $block_size );
$response .= $block;
if ( ! $body_started && strpos( $response, "\r\n\r\n" ) ) {
$header_length = strpos( $response, "\r\n\r\n" ) + 4;
$body_started = true;
}
$keep_reading = (
! $body_started
|| ! isset( $parsed_args['limit_response_size'] )
|| strlen( $response ) < ( $header_length + $parsed_args['limit_response_size'] )
);
}
$processed_response = WP_Http::processResponse( $response );
unset( $response );
}
fclose( $handle );
$processed_headers = WP_Http::processHeaders( $processed_response['headers'], $url );
$response = array(
'headers' => $processed_headers['headers'],
// Not yet processed.
'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 the body was chunk encoded, then decode it.
if ( ! empty( $processed_response['body'] )
&& isset( $processed_headers['headers']['transfer-encoding'] )
&& 'chunked' === $processed_headers['headers']['transfer-encoding']
) {
$processed_response['body'] = WP_Http::chunkTransferDecode( $processed_response['body'] );
}
if ( true === $parsed_args['decompress']
&& true === WP_Http_Encoding::should_decode( $processed_headers['headers'] )
) {
$processed_response['body'] = WP_Http_Encoding::decompress( $processed_response['body'] );
}
if ( isset( $parsed_args['limit_response_size'] )
&& strlen( $processed_response['body'] ) > $parsed_args['limit_response_size']
) {
$processed_response['body'] = substr( $processed_response['body'], 0, $parsed_args['limit_response_size'] );
}
$response['body'] = $processed_response['body'];
return $response;
}
/**
* Verifies the received SSL certificate against its Common Names and subjectAltName fields.
*
* PHP's SSL verifications only verify that it's a valid Certificate, it doesn't verify if
* the certificate is valid for the hostname which was requested.
* This function verifies the requested hostname against certificate's subjectAltName field,
* if that is empty, or contains no DNS entries, a fallback to the Common Name field is used.
*
* IP Address support is included if the request is being made to an IP address.
*
* @since 3.7.0
*
* @param resource $stream The PHP Stream which the SSL request is being made over
* @param string $host The hostname being requested
* @return bool If the certificate presented in $stream is valid for $host
*/
public static function verify_ssl_certificate( $stream, $host ) {
$context_options = stream_context_get_options( $stream );
if ( empty( $context_options['ssl']['peer_certificate'] ) ) {
return false;
}
$cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] );
if ( ! $cert ) {
return false;
}
/*
* If the request is being made to an IP address, we'll validate against IP fields
* in the cert (if they exist)
*/
$host_type = ( WP_Http::is_ip_address( $host ) ? 'ip' : 'dns' );
$certificate_hostnames = array();
if ( ! empty( $cert['extensions']['subjectAltName'] ) ) {
$match_against = preg_split( '/,\s*/', $cert['extensions']['subjectAltName'] );
foreach ( $match_against as $match ) {
list( $match_type, $match_host ) = explode( ':', $match );
if ( strtolower( trim( $match_type ) ) === $host_type ) { // IP: or DNS:
$certificate_hostnames[] = strtolower( trim( $match_host ) );
}
}
} elseif ( ! empty( $cert['subject']['CN'] ) ) {
// Only use the CN when the certificate includes no subjectAltName extension.
$certificate_hostnames[] = strtolower( $cert['subject']['CN'] );
}
// Exact hostname/IP matches.
if ( in_array( strtolower( $host ), $certificate_hostnames, true ) ) {
return true;
}
// IP's can't be wildcards, Stop processing.
if ( 'ip' === $host_type ) {
return false;
}
// Test to see if the domain is at least 2 deep for wildcard support.
if ( substr_count( $host, '.' ) < 2 ) {
return false;
}
// Wildcard subdomains certs (*.example.com) are valid for a.example.com but not a.b.example.com.
$wildcard_host = preg_replace( '/^[^.]+\./', '*.', $host );
return in_array( strtolower( $wildcard_host ), $certificate_hostnames, true );
}
/**
* Determines whether this class can be used for retrieving a URL.
*
* @since 2.7.0
* @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
*
* @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( 'stream_socket_client' ) ) {
return false;
}
$is_ssl = isset( $args['ssl'] ) && $args['ssl'];
if ( $is_ssl ) {
if ( ! extension_loaded( 'openssl' ) ) {
return false;
}
if ( ! function_exists( 'openssl_x509_parse' ) ) {
return false;
}
}
/**
* Filters whether streams 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 Request arguments.
*/
return apply_filters( 'use_streams_transport', true, $args );
}
}
/**
* Deprecated HTTP Transport method which used fsockopen.
*
* This class is not used, and is included for backward compatibility only.
* All code should make use of WP_Http directly through its API.
*
* @see WP_HTTP::request
*
* @since 2.7.0
* @deprecated 3.7.0 Please use WP_HTTP::request() directly
*/
class WP_HTTP_Fsockopen extends WP_Http_Streams {
// For backward compatibility for users who are using the class directly.
}