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<?php |
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/** |
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* Classes used to send headers and cookies back to the user |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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*/ |
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/** |
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* Allow programs to request this object from WebRequest::response() |
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* and handle all outputting (or lack of outputting) via it. |
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* @ingroup HTTP |
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*/ |
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class WebResponse { |
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/** @var array Used to record set cookies, because PHP's setcookie() will |
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* happily send an identical Set-Cookie to the client. |
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*/ |
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protected static $setCookies = []; |
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/** |
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* Output an HTTP header, wrapper for PHP's header() |
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* @param string $string Header to output |
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* @param bool $replace Replace current similar header |
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* @param null|int $http_response_code Forces the HTTP response code to the specified value. |
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*/ |
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public function header( $string, $replace = true, $http_response_code = null ) { |
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if ( $http_response_code ) { |
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header( $string, $replace, $http_response_code ); |
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} else { |
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header( $string, $replace ); |
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} |
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} |
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/** |
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* Get a response header |
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* @param string $key The name of the header to get (case insensitive). |
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* @return string|null The header value (if set); null otherwise. |
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* @since 1.25 |
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*/ |
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public function getHeader( $key ) { |
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foreach ( headers_list() as $header ) { |
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list( $name, $val ) = explode( ':', $header, 2 ); |
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if ( !strcasecmp( $name, $key ) ) { |
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return trim( $val ); |
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} |
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} |
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return null; |
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} |
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/** |
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* Output an HTTP status code header |
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* @since 1.26 |
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* @param int $code Status code |
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*/ |
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public function statusHeader( $code ) { |
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HttpStatus::header( $code ); |
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} |
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/** |
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* Test if headers have been sent |
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* @since 1.27 |
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* @return bool |
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*/ |
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public function headersSent() { |
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return headers_sent(); |
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} |
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/** |
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* Set the browser cookie |
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* @param string $name The name of the cookie. |
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* @param string $value The value to be stored in the cookie. |
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* @param int|null $expire Unix timestamp (in seconds) when the cookie should expire. |
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* 0 (the default) causes it to expire $wgCookieExpiration seconds from now. |
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* null causes it to be a session cookie. |
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* @param array $options Assoc of additional cookie options: |
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* prefix: string, name prefix ($wgCookiePrefix) |
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* domain: string, cookie domain ($wgCookieDomain) |
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* path: string, cookie path ($wgCookiePath) |
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* secure: bool, secure attribute ($wgCookieSecure) |
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* httpOnly: bool, httpOnly attribute ($wgCookieHttpOnly) |
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* @since 1.22 Replaced $prefix, $domain, and $forceSecure with $options |
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*/ |
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public function setCookie( $name, $value, $expire = 0, $options = [] ) { |
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global $wgCookiePath, $wgCookiePrefix, $wgCookieDomain; |
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global $wgCookieSecure, $wgCookieExpiration, $wgCookieHttpOnly; |
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$options = array_filter( $options, function ( $a ) { |
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return $a !== null; |
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} ) + [ |
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'prefix' => $wgCookiePrefix, |
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'domain' => $wgCookieDomain, |
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'path' => $wgCookiePath, |
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'secure' => $wgCookieSecure, |
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'httpOnly' => $wgCookieHttpOnly, |
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'raw' => false, |
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]; |
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View Code Duplication |
if ( $expire === null ) { |
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$expire = 0; // Session cookie |
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} elseif ( $expire == 0 && $wgCookieExpiration != 0 ) { |
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$expire = time() + $wgCookieExpiration; |
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} |
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$func = $options['raw'] ? 'setrawcookie' : 'setcookie'; |
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if ( Hooks::run( 'WebResponseSetCookie', [ &$name, &$value, &$expire, &$options ] ) ) { |
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$cookie = $options['prefix'] . $name; |
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$data = [ |
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'name' => (string)$cookie, |
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'value' => (string)$value, |
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'expire' => (int)$expire, |
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'path' => (string)$options['path'], |
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'domain' => (string)$options['domain'], |
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'secure' => (bool)$options['secure'], |
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'httpOnly' => (bool)$options['httpOnly'], |
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]; |
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// Per RFC 6265, key is name + domain + path |
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$key = "{$data['name']}\n{$data['domain']}\n{$data['path']}"; |
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// If this cookie name was in the request, fake an entry in |
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// self::$setCookies for it so the deleting check works right. |
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if ( isset( $_COOKIE[$cookie] ) && !array_key_exists( $key, self::$setCookies ) ) { |
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self::$setCookies[$key] = []; |
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} |
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// PHP deletes if value is the empty string; also, a past expiry is deleting |
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$deleting = ( $data['value'] === '' || $data['expire'] > 0 && $data['expire'] <= time() ); |
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if ( $deleting && !isset( self::$setCookies[$key] ) ) { // isset( null ) is false |
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wfDebugLog( 'cookie', 'already deleted ' . $func . ': "' . implode( '", "', $data ) . '"' ); |
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} elseif ( !$deleting && isset( self::$setCookies[$key] ) && |
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self::$setCookies[$key] === [ $func, $data ] |
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) { |
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wfDebugLog( 'cookie', 'already set ' . $func . ': "' . implode( '", "', $data ) . '"' ); |
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} else { |
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wfDebugLog( 'cookie', $func . ': "' . implode( '", "', $data ) . '"' ); |
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if ( call_user_func_array( $func, array_values( $data ) ) ) { |
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self::$setCookies[$key] = $deleting ? null : [ $func, $data ]; |
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} |
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} |
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} |
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} |
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/** |
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* Unset a browser cookie. |
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* This sets the cookie with an empty value and an expiry set to a time in the past, |
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* which will cause the browser to remove any cookie with the given name, domain and |
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* path from its cookie store. Options other than these (and prefix) have no effect. |
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* @param string $name Cookie name |
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* @param array $options Cookie options, see {@link setCookie()} |
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* @since 1.27 |
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*/ |
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public function clearCookie( $name, $options = [] ) { |
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$this->setCookie( $name, '', time() - 31536000 /* 1 year */, $options ); |
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} |
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/** |
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* Checks whether this request is performing cookie operations |
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* |
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* @return bool |
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* @since 1.27 |
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*/ |
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public function hasCookies() { |
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return (bool)self::$setCookies; |
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} |
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} |
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/** |
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* @ingroup HTTP |
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*/ |
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class FauxResponse extends WebResponse { |
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private $headers; |
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private $cookies = []; |
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private $code; |
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/** |
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* Stores a HTTP header |
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* @param string $string Header to output |
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* @param bool $replace Replace current similar header |
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* @param null|int $http_response_code Forces the HTTP response code to the specified value. |
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*/ |
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public function header( $string, $replace = true, $http_response_code = null ) { |
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if ( substr( $string, 0, 5 ) == 'HTTP/' ) { |
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$parts = explode( ' ', $string, 3 ); |
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$this->code = intval( $parts[1] ); |
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} else { |
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list( $key, $val ) = array_map( 'trim', explode( ":", $string, 2 ) ); |
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$key = strtoupper( $key ); |
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if ( $replace || !isset( $this->headers[$key] ) ) { |
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$this->headers[$key] = $val; |
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} |
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} |
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if ( $http_response_code !== null ) { |
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$this->code = intval( $http_response_code ); |
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} |
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} |
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/** |
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* @since 1.26 |
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* @param int $code Status code |
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*/ |
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public function statusHeader( $code ) { |
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$this->code = intval( $code ); |
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} |
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public function headersSent() { |
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return false; |
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} |
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/** |
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* @param string $key The name of the header to get (case insensitive). |
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* @return string|null The header value (if set); null otherwise. |
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*/ |
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public function getHeader( $key ) { |
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$key = strtoupper( $key ); |
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if ( isset( $this->headers[$key] ) ) { |
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return $this->headers[$key]; |
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} |
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return null; |
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} |
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/** |
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* Get the HTTP response code, null if not set |
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* |
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* @return int|null |
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*/ |
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public function getStatusCode() { |
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return $this->code; |
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} |
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/** |
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* @param string $name The name of the cookie. |
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* @param string $value The value to be stored in the cookie. |
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* @param int|null $expire Ignored in this faux subclass. |
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* @param array $options Ignored in this faux subclass. |
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*/ |
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public function setCookie( $name, $value, $expire = 0, $options = [] ) { |
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global $wgCookiePath, $wgCookiePrefix, $wgCookieDomain; |
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global $wgCookieSecure, $wgCookieExpiration, $wgCookieHttpOnly; |
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$options = array_filter( $options, function ( $a ) { |
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return $a !== null; |
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} ) + [ |
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'prefix' => $wgCookiePrefix, |
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'domain' => $wgCookieDomain, |
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'path' => $wgCookiePath, |
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'secure' => $wgCookieSecure, |
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'httpOnly' => $wgCookieHttpOnly, |
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'raw' => false, |
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]; |
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View Code Duplication |
if ( $expire === null ) { |
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$expire = 0; // Session cookie |
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} elseif ( $expire == 0 && $wgCookieExpiration != 0 ) { |
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$expire = time() + $wgCookieExpiration; |
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} |
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$this->cookies[$options['prefix'] . $name] = [ |
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'value' => (string)$value, |
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'expire' => (int)$expire, |
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'path' => (string)$options['path'], |
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'domain' => (string)$options['domain'], |
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'secure' => (bool)$options['secure'], |
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'httpOnly' => (bool)$options['httpOnly'], |
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'raw' => (bool)$options['raw'], |
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]; |
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} |
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/** |
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* @param string $name |
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* @return string|null |
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*/ |
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public function getCookie( $name ) { |
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if ( isset( $this->cookies[$name] ) ) { |
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return $this->cookies[$name]['value']; |
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} |
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return null; |
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} |
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/** |
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* @param string $name |
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* @return array|null |
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*/ |
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public function getCookieData( $name ) { |
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if ( isset( $this->cookies[$name] ) ) { |
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return $this->cookies[$name]; |
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} |
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return null; |
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} |
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/** |
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* @return array |
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*/ |
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public function getCookies() { |
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return $this->cookies; |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
integer
values, zero is a special case, in particular the following results might be unexpected: