22use Wikimedia\Timestamp\ConvertibleTimestamp;
50 $this->obResetFunc = isset(
$params[
'obResetFunc'] )
52 : [ __CLASS__,
'resetOutputBuffers' ];
53 $this->streamMimeFunc = isset(
$params[
'streamMimeFunc'] )
55 : [ __CLASS__,
'contentTypeFromPath' ];
71 $headers = [], $sendErrors =
true, $optHeaders = [],
$flags = 0
74 if ( ( (
$flags & self::STREAM_HEADLESS ) == 0 || $headers ) && headers_sent() ) {
75 echo
"Headers already sent, terminating.\n";
87 MediaWiki\suppressWarnings();
88 $info = stat( $this->path );
89 MediaWiki\restoreWarnings();
91 if ( !is_array( $info ) ) {
99 $mtimeCT =
new ConvertibleTimestamp( $info[
'mtime'] );
100 $headerFunc(
'Last-Modified: ' . $mtimeCT->getTimestamp( TS_RFC2822 ) );
102 if ( (
$flags & self::STREAM_ALLOW_OB ) == 0 ) {
103 call_user_func( $this->obResetFunc );
106 $type = call_user_func( $this->streamMimeFunc, $this->path );
108 $headerFunc(
"Content-type: $type" );
114 $headerFunc(
'Content-type: application/x-wiki' );
118 if ( isset( $optHeaders[
'if-modified-since'] ) ) {
119 $modsince = preg_replace(
'/;.*$/',
'', $optHeaders[
'if-modified-since'] );
120 if ( $mtimeCT->getTimestamp( TS_UNIX ) <= strtotime( $modsince ) ) {
121 ini_set(
'zlib.output_compression', 0 );
132 if ( isset( $optHeaders[
'range'] ) ) {
134 if ( is_array( $range ) ) {
136 $headerFunc(
'Content-Length: ' . $range[2] );
137 $headerFunc(
"Content-Range: bytes {$range[0]}-{$range[1]}/{$info['size']}" );
138 } elseif ( $range ===
'invalid' ) {
141 $headerFunc(
'Cache-Control: no-cache' );
142 $headerFunc(
'Content-Type: text/html; charset=utf-8' );
143 $headerFunc(
'Content-Range: bytes */' . $info[
'size'] );
148 $headerFunc(
'Content-Length: ' . $info[
'size'] );
152 $headerFunc(
'Content-Length: ' . $info[
'size'] );
155 if ( is_array( $range ) ) {
156 $handle = fopen( $this->path,
'rb' );
159 fseek( $handle, $range[0] );
160 $remaining = $range[2];
161 while ( $remaining > 0 && $ok ) {
162 $bytes = min( $remaining, 8 * 1024 );
163 $data = fread( $handle, $bytes );
164 $remaining -= $bytes;
165 $ok = ( $data !==
false );
172 return readfile( $this->path ) !==
false;
186 if ( (
$flags & self::STREAM_HEADLESS ) == 0 ) {
188 header(
'Cache-Control: no-cache' );
189 header(
'Content-Type: text/html; charset=utf-8' );
191 $encFile = htmlspecialchars(
$fname );
192 $encScript = htmlspecialchars( $_SERVER[
'SCRIPT_NAME'] );
193 echo
"<!DOCTYPE html><html><body>
194 <h1>File not found</h1>
195 <p>Although this PHP script ($encScript) exists, the file requested for output
196 ($encFile) does not.</p>
211 if ( preg_match(
'#^bytes=(\d*)-(\d*)$#', $range, $m ) ) {
212 list( , $start, $end ) = $m;
213 if ( $start ===
'' && $end ===
'' ) {
214 $absRange = [ 0, $size - 1 ];
215 } elseif ( $start ===
'' ) {
216 $absRange = [ $size - $end, $size - 1 ];
217 } elseif ( $end ===
'' ) {
218 $absRange = [ $start, $size - 1 ];
220 $absRange = [ $start, $end ];
222 if ( $absRange[0] >= 0 && $absRange[1] >= $absRange[0] ) {
223 if ( $absRange[0] < $size ) {
224 $absRange[1] = min( $absRange[1], $size - 1 );
225 $absRange[2] = $absRange[1] - $absRange[0] + 1;
227 } elseif ( $absRange[0] == 0 && $size == 0 ) {
228 return 'unrecognized';
233 return 'unrecognized';
237 while ( ob_get_status() ) {
238 if ( !ob_end_clean() ) {
253 $ext = strrchr( $filename,
'.' );
254 $ext =
$ext ===
false ?
'' : strtolower( substr(
$ext, 1 ) );
267 return 'unknown/unknown';
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
if(!defined( 'MEDIAWIKI')) $fname
This file is not a valid entry point, perform no further processing unless MEDIAWIKI is defined.
Functions related to the output of file content.
static send404Message( $fname, $flags=0)
Send out a standard 404 message for a file.
static resetOutputBuffers()
static contentTypeFromPath( $filename)
Determine the file type of a file based on the path.
static parseRange( $range, $size)
Convert a Range header value to an absolute (start, end) range tuple.
__construct( $path, array $params=[])
stream( $headers=[], $sendErrors=true, $optHeaders=[], $flags=0)
Stream a file to the browser, adding all the headings and fun stuff.
static header( $code)
Output an HTTP status code header.
deferred txt A few of the database updates required by various functions here can be deferred until after the result page is displayed to the user For updating the view updating the linked to tables after a etc PHP does not yet have any way to tell the server to actually return and disconnect while still running these but it might have such a feature in the future We handle these by creating a deferred update object and putting those objects on a global list
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
while(( $__line=Maintenance::readconsole()) !==false) print
the array() calling protocol came about after MediaWiki 1.4rc1.
it s the revision text itself In either if gzip is the revision text is gzipped $flags
processing should stop and the error should be shown to the user * false
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php