X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/03f2fa83c13c1b532284205fa7efcab9b8b2c41f..refs/tags/wordpress-4.7.1:/wp-includes/http.php

diff --git a/wp-includes/http.php b/wp-includes/http.php
index 8fa00e94..862e456a 100644
--- a/wp-includes/http.php
+++ b/wp-includes/http.php
@@ -208,13 +208,17 @@ function wp_remote_head($url, $args = array()) {
  * Retrieve only the headers from the raw response.
  *
  * @since 2.7.0
+ * @since 4.6.0 Return value changed from an array to an Requests_Utility_CaseInsensitiveDictionary instance.
+ *
+ * @see \Requests_Utility_CaseInsensitiveDictionary
  *
  * @param array $response HTTP response.
- * @return array The headers of the response. Empty array if incorrect parameter given.
+ * @return array|\Requests_Utility_CaseInsensitiveDictionary The headers of the response. Empty array if incorrect parameter given.
  */
 function wp_remote_retrieve_headers( $response ) {
-	if ( is_wp_error($response) || ! isset($response['headers']) || ! is_array($response['headers']))
+	if ( is_wp_error( $response ) || ! isset( $response['headers'] ) ) {
 		return array();
+	}
 
 	return $response['headers'];
 }
@@ -229,11 +233,13 @@ function wp_remote_retrieve_headers( $response ) {
  * @return string The header value. Empty string on if incorrect parameter given, or if the header doesn't exist.
  */
 function wp_remote_retrieve_header( $response, $header ) {
-	if ( is_wp_error($response) || ! isset($response['headers']) || ! is_array($response['headers']))
+	if ( is_wp_error( $response ) || ! isset( $response['headers'] ) ) {
 		return '';
+	}
 
-	if ( array_key_exists($header, $response['headers']) )
+	if ( isset( $response['headers'][ $header ] ) ) {
 		return $response['headers'][$header];
+	}
 
 	return '';
 }
@@ -288,7 +294,7 @@ function wp_remote_retrieve_body( $response ) {
 }
 
 /**
- * Retrieve only the body from the raw response.
+ * Retrieve only the cookies from the raw response.
  *
  * @since 4.4.0
  *
@@ -443,7 +449,7 @@ function get_allowed_http_origins() {
  * @since 3.4.0
  *
  * @param null|string $origin Origin URL. If not provided, the value of get_http_origin() is used.
- * @return string True if the origin is allowed. False otherwise.
+ * @return string Origin URL if allowed, empty string if not.
  */
 function is_allowed_http_origin( $origin = null ) {
 	$origin_arg = $origin;
@@ -459,7 +465,7 @@ function is_allowed_http_origin( $origin = null ) {
 	 *
 	 * @since 3.4.0
 	 *
-	 * @param string $origin     Result of check for allowed origin.
+	 * @param string $origin     Origin URL if allowed, empty string if not.
 	 * @param string $origin_arg Original origin string passed into is_allowed_http_origin function.
 	 */
 	return apply_filters( 'allowed_http_origin', $origin, $origin_arg );
@@ -523,11 +529,15 @@ function wp_http_validate_url( $url ) {
 
 	$parsed_home = @parse_url( get_option( 'home' ) );
 
-	$same_host = strtolower( $parsed_home['host'] ) === strtolower( $parsed_url['host'] );
+	if ( isset( $parsed_home['host'] ) ) {
+		$same_host = ( strtolower( $parsed_home['host'] ) === strtolower( $parsed_url['host'] ) || 'localhost' === strtolower( $parsed_url['host'] ) );
+	} else {
+		$same_host = false;
+	}
 
 	if ( ! $same_host ) {
 		$host = trim( $parsed_url['host'], '.' );
-		if ( preg_match( '#^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$#', $host ) ) {
+		if ( preg_match( '#^(([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)\.){3}([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)$#', $host ) ) {
 			$ip = $host;
 		} else {
 			$ip = gethostbyname( $host );
@@ -536,7 +546,7 @@ function wp_http_validate_url( $url ) {
 		}
 		if ( $ip ) {
 			$parts = array_map( 'intval', explode( '.', $ip ) );
-			if ( 127 === $parts[0] || 10 === $parts[0]
+			if ( 127 === $parts[0] || 10 === $parts[0] || 0 === $parts[0]
 				|| ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
 				|| ( 192 === $parts[0] && 168 === $parts[1] )
 			) {
@@ -574,7 +584,7 @@ function wp_http_validate_url( $url ) {
 /**
  * Whitelists allowed redirect hosts for safe HTTP requests as well.
  *
- * Attached to the http_request_host_is_external filter.
+ * Attached to the {@see 'http_request_host_is_external'} filter.
  *
  * @since 3.6.0
  *
@@ -591,7 +601,7 @@ function allowed_http_request_hosts( $is_external, $host ) {
 /**
  * Whitelists any domain in a multisite installation for safe HTTP requests.
  *
- * Attached to the http_request_host_is_external filter.
+ * Attached to the {@see 'http_request_host_is_external'} filter.
  *
  * @since 3.6.0
  *
@@ -607,7 +617,7 @@ function ms_allowed_http_request_hosts( $is_external, $host ) {
 	static $queried = array();
 	if ( $is_external )
 		return $is_external;
-	if ( $host === get_current_site()->domain )
+	if ( $host === get_network()->domain )
 		return true;
 	if ( isset( $queried[ $host ] ) )
 		return $queried[ $host ];
@@ -616,47 +626,118 @@ function ms_allowed_http_request_hosts( $is_external, $host ) {
 }
 
 /**
- * A wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7
+ * A wrapper for PHP's parse_url() function that handles consistency in the return
+ * values across PHP versions.
  *
  * PHP 5.4.7 expanded parse_url()'s ability to handle non-absolute url's, including
- * schemeless and relative url's with :// in the path, this works around those
- * limitations providing a standard output on PHP 5.2~5.4+.
+ * schemeless and relative url's with :// in the path. This function works around
+ * those limitations providing a standard output on PHP 5.2~5.4+.
+ *
+ * Secondly, across various PHP versions, schemeless URLs starting containing a ":"
+ * in the query are being handled inconsistently. This function works around those
+ * differences as well.
  *
  * Error suppression is used as prior to PHP 5.3.3, an E_WARNING would be generated
  * when URL parsing failed.
  *
  * @since 4.4.0
- *
- * @param string $url The URL to parse.
- * @return bool|array False on failure; Array of URL components on success;
- *                    See parse_url()'s return values.
+ * @since 4.7.0 The $component parameter was added for parity with PHP's parse_url().
+ *
+ * @param string $url       The URL to parse.
+ * @param int    $component The specific component to retrieve. Use one of the PHP
+ *                          predefined constants to specify which one.
+ *                          Defaults to -1 (= return all parts as an array).
+ *                          @see http://php.net/manual/en/function.parse-url.php
+ * @return mixed False on parse failure; Array of URL components on success;
+ *               When a specific component has been requested: null if the component
+ *               doesn't exist in the given URL; a sting or - in the case of
+ *               PHP_URL_PORT - integer when it does. See parse_url()'s return values.
  */
-function wp_parse_url( $url ) {
+function wp_parse_url( $url, $component = -1 ) {
+	$to_unset = array();
+	$url = strval( $url );
+
+	if ( '//' === substr( $url, 0, 2 ) ) {
+		$to_unset[] = 'scheme';
+		$url = 'placeholder:' . $url;
+	} elseif ( '/' === substr( $url, 0, 1 ) ) {
+		$to_unset[] = 'scheme';
+		$to_unset[] = 'host';
+		$url = 'placeholder://placeholder' . $url;
+	}
+
 	$parts = @parse_url( $url );
-	if ( ! $parts ) {
-		// < PHP 5.4.7 compat, trouble with relative paths including a scheme break in the path
-		if ( '/' == $url[0] && false !== strpos( $url, '://' ) ) {
-			// Since we know it's a relative path, prefix with a scheme/host placeholder and try again
-			if ( ! $parts = @parse_url( 'placeholder://placeholder' . $url ) ) {
-				return $parts;
-			}
-			// Remove the placeholder values
-			unset( $parts['scheme'], $parts['host'] );
-		} else {
-			return $parts;
-		}
+
+	if ( false === $parts ) {
+		// Parsing failure.
+		return $parts;
 	}
 
-	// < PHP 5.4.7 compat, doesn't detect schemeless URL's host field
-	if ( '//' == substr( $url, 0, 2 ) && ! isset( $parts['host'] ) ) {
-		$path_parts = explode( '/', substr( $parts['path'], 2 ), 2 );
-		$parts['host'] = $path_parts[0];
-		if ( isset( $path_parts[1] ) ) {
-			$parts['path'] = '/' . $path_parts[1];
-		} else {
-			unset( $parts['path'] );
-		}
+	// Remove the placeholder values.
+	foreach ( $to_unset as $key ) {
+		unset( $parts[ $key ] );
+	}
+
+	return _get_component_from_parsed_url_array( $parts, $component );
+}
+
+/**
+ * Retrieve a specific component from a parsed URL array.
+ *
+ * @internal
+ *
+ * @since 4.7.0
+ *
+ * @param array|false $url_parts The parsed URL. Can be false if the URL failed to parse.
+ * @param int    $component The specific component to retrieve. Use one of the PHP
+ *                          predefined constants to specify which one.
+ *                          Defaults to -1 (= return all parts as an array).
+ *                          @see http://php.net/manual/en/function.parse-url.php
+ * @return mixed False on parse failure; Array of URL components on success;
+ *               When a specific component has been requested: null if the component
+ *               doesn't exist in the given URL; a sting or - in the case of
+ *               PHP_URL_PORT - integer when it does. See parse_url()'s return values.
+ */
+function _get_component_from_parsed_url_array( $url_parts, $component = -1 ) {
+	if ( -1 === $component ) {
+		return $url_parts;
+	}
+
+	$key = _wp_translate_php_url_constant_to_key( $component );
+	if ( false !== $key && is_array( $url_parts ) && isset( $url_parts[ $key ] ) ) {
+		return $url_parts[ $key ];
+	} else {
+		return null;
 	}
+}
 
-	return $parts;
+/**
+ * Translate a PHP_URL_* constant to the named array keys PHP uses.
+ *
+ * @internal
+ *
+ * @since 4.7.0
+ *
+ * @see   http://php.net/manual/en/url.constants.php
+ *
+ * @param int $constant PHP_URL_* constant.
+ * @return string|bool The named key or false.
+ */
+function _wp_translate_php_url_constant_to_key( $constant ) {
+	$translation = array(
+		PHP_URL_SCHEME   => 'scheme',
+		PHP_URL_HOST     => 'host',
+		PHP_URL_PORT     => 'port',
+		PHP_URL_USER     => 'user',
+		PHP_URL_PASS     => 'pass',
+		PHP_URL_PATH     => 'path',
+		PHP_URL_QUERY    => 'query',
+		PHP_URL_FRAGMENT => 'fragment',
+	);
+
+	if ( isset( $translation[ $constant ] ) ) {
+		return $translation[ $constant ];
+	} else {
+		return false;
+	}
 }