* @ingroup HTTP
*/
class Http {
+ // Syncronous download (in a single request)
+ const SYNC_DOWNLOAD = 1;
+
+ // Asynchronous download ( background process with multiple requests )
+ const ASYNC_DOWNLOAD = 2;
+
+ /**
+ * Get the contents of a file by HTTP
+ * @param $method string HTTP method. Usually GET/POST
+ * @param $url string Full URL to act on
+ * @param $timeout int Seconds to timeout. 'default' falls to $wgHTTPTimeout
+ * @param $curlOptions array Optional array of extra params to pass
+ * to curl_setopt()
+ */
+ public static function request( $method, $url, $opts = array() ) {
+ $opts['method'] = ( strtoupper( $method ) == 'GET' || strtoupper( $method ) == 'POST' )
+ ? strtoupper( $method ) : null;
+ $req = HttpRequest::newRequest( $url, $opts );
+ $status = $req->doRequest();
+ if( $status->isOK() ) {
+ return $status->value;
+ } else {
+ wfDebug( 'http error: ' . $status->getWikiText() );
+ return false;
+ }
+ }
/**
* Simple wrapper for Http::request( 'GET' )
* @see Http::request()
*/
- public static function get( $url, $timeout = 'default', $opts = array() ) {
- return Http::request( "GET", $url, $timeout, $opts );
+ public static function get( $url, $timeout = false, $opts = array() ) {
+ global $wgSyncHTTPTimeout;
+ if( $timeout )
+ $opts['timeout'] = $timeout;
+ return Http::request( 'GET', $url, $opts );
}
/**
* Simple wrapper for Http::request( 'POST' )
* @see Http::request()
*/
- public static function post( $url, $timeout = 'default', $opts = array() ) {
- return Http::request( "POST", $url, $timeout, $opts );
+ public static function post( $url, $opts = array() ) {
+ return Http::request( 'POST', $url, $opts );
+ }
+
+ public static function doDownload( $url, $target_file_path, $dl_mode = self::SYNC_DOWNLOAD,
+ $redirectCount = 0 )
+ {
+ global $wgPhpCli, $wgMaxUploadSize, $wgMaxRedirects;
+ // do a quick check to HEAD to insure the file size is not > $wgMaxUploadSize
+ $headRequest = HttpRequest::newRequest( $url, array( 'headers_only' => true ) );
+ $headResponse = $headRequest->doRequest();
+ if( !$headResponse->isOK() ) {
+ return $headResponse;
+ }
+ $head = $headResponse->value;
+
+ // check for redirects:
+ if( isset( $head['Location'] ) && strrpos( $head[0], '302' ) !== false ) {
+ if( $redirectCount < $wgMaxRedirects ) {
+ if( self::isValidURI( $head['Location'] ) ) {
+ return self::doDownload( $head['Location'], $target_file_path,
+ $dl_mode, $redirectCount++ );
+ } else {
+ return Status::newFatal( 'upload-proto-error' );
+ }
+ } else {
+ return Status::newFatal( 'upload-too-many-redirects' );
+ }
+ }
+ // we did not get a 200 ok response:
+ if( strrpos( $head[0], '200 OK' ) === false ) {
+ return Status::newFatal( 'upload-http-error', htmlspecialchars( $head[0] ) );
+ }
+
+ $content_length = ( isset( $head['Content-Length'] ) ) ? $head['Content-Length'] : null;
+ if( $content_length ) {
+ if( $content_length > $wgMaxUploadSize ) {
+ return Status::newFatal( 'requested file length ' . $content_length .
+ ' is greater than $wgMaxUploadSize: ' . $wgMaxUploadSize );
+ }
+ }
+
+ // check if we can find phpCliPath (for doing a background shell request to
+ // php to do the download:
+ if( $wgPhpCli && wfShellExecEnabled() && $dl_mode == self::ASYNC_DOWNLOAD ) {
+ wfDebug( __METHOD__ . "\nASYNC_DOWNLOAD\n" );
+ //setup session and shell call:
+ return self::initBackgroundDownload( $url, $target_file_path, $content_length );
+ } else {
+ wfDebug( __METHOD__ . "\nSYNC_DOWNLOAD\n" );
+ // SYNC_DOWNLOAD download as much as we can in the time we have to execute
+ $opts['method'] = 'GET';
+ $opts['target_file_path'] = $target_file_path;
+ $req = HttpRequest::newRequest( $url, $opts );
+ return $req->doRequest();
+ }
+ }
+
+ /**
+ * a non blocking request (generally an exit point in the application)
+ * should write to a file location and give updates
+ *
+ */
+ private static function initBackgroundDownload( $url, $target_file_path,
+ $content_length = null )
+ {
+ global $IP, $wgPhpCli, $wgServer;
+ $status = Status::newGood();
+
+ // generate a session id with all the details for the download (pid, target_file_path )
+ $upload_session_key = self::getUploadSessionKey();
+ $session_id = session_id();
+
+ // store the url and target path:
+ $_SESSION['wsDownload'][$upload_session_key]['url'] = $url;
+ $_SESSION['wsDownload'][$upload_session_key]['target_file_path'] = $target_file_path;
+ // since we request from the cmd line we lose the original host name pass in the session:
+ $_SESSION['wsDownload'][$upload_session_key]['orgServer'] = $wgServer;
+
+ if( $content_length )
+ $_SESSION['wsDownload'][$upload_session_key]['content_length'] = $content_length;
+
+ // set initial loaded bytes:
+ $_SESSION['wsDownload'][$upload_session_key]['loaded'] = 0;
+
+ // run the background download request:
+ $cmd = $wgPhpCli . ' ' . $IP . "/maintenance/http_session_download.php " .
+ "--sid {$session_id} --usk {$upload_session_key} --wiki " . wfWikiId();
+ $pid = wfShellBackgroundExec( $cmd );
+ // the pid is not of much use since we won't be visiting this same apache any-time soon.
+ if( !$pid )
+ return Status::newFatal( 'could not run background shell exec' );
+
+ // update the status value with the $upload_session_key (for the user to
+ // check on the status of the upload)
+ $status->value = $upload_session_key;
+
+ // return good status
+ return $status;
+ }
+
+ static function getUploadSessionKey() {
+ $key = mt_rand( 0, 0x7fffffff );
+ $_SESSION['wsUploadData'][$key] = array();
+ return $key;
}
/**
- * Get the contents of a file by HTTP
- * @param $method string HTTP method. Usually GET/POST
- * @param $url string Full URL to act on
- * @param $timeout int Seconds to timeout. 'default' falls to $wgHTTPTimeout
- * @param $curlOptions array Optional array of extra params to pass
- * to curl_setopt()
+ * used to run a session based download. Is initiated via the shell.
+ *
+ * @param $session_id String: the session id to grab download details from
+ * @param $upload_session_key String: the key of the given upload session
+ * (a given client could have started a few http uploads at once)
*/
- public static function request( $method, $url, $timeout = 'default', $curlOptions = array() ) {
- global $wgHTTPTimeout, $wgHTTPProxy, $wgTitle;
+ public static function doSessionIdDownload( $session_id, $upload_session_key ) {
+ global $wgUser, $wgEnableWriteAPI, $wgAsyncHTTPTimeout, $wgServer,
+ $wgSessionsInMemcached, $wgSessionHandler, $wgSessionStarted;
+ wfDebug( __METHOD__ . "\n\n doSessionIdDownload :\n\n" );
+ // set session to the provided key:
+ session_id( $session_id );
+ //fire up mediaWiki session system:
+ wfSetupSession();
- // Go ahead and set the timeout if not otherwise specified
- if ( $timeout == 'default' ) {
- $timeout = $wgHTTPTimeout;
+ // start the session
+ if( session_start() === false ) {
+ wfDebug( __METHOD__ . ' could not start session' );
+ }
+ // get all the vars we need from session_id
+ if( !isset( $_SESSION[ 'wsDownload' ][$upload_session_key] ) ) {
+ wfDebug( __METHOD__ . ' Error:could not find upload session');
+ exit();
}
+ // setup the global user from the session key we just inherited
+ $wgUser = User::newFromSession();
- wfDebug( __METHOD__ . ": $method $url\n" );
- # Use curl if available
- if ( function_exists( 'curl_init' ) ) {
- $c = curl_init( $url );
- if ( self::isLocalURL( $url ) ) {
- curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
- } else if ($wgHTTPProxy) {
- curl_setopt($c, CURLOPT_PROXY, $wgHTTPProxy);
- }
+ // grab the session data to setup the request:
+ $sd =& $_SESSION['wsDownload'][$upload_session_key];
- curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
- curl_setopt( $c, CURLOPT_USERAGENT, self :: userAgent() );
- if ( $method == 'POST' ) {
- curl_setopt( $c, CURLOPT_POST, true );
- curl_setopt( $c, CURLOPT_POSTFIELDS, '' );
- }
- else
- curl_setopt( $c, CURLOPT_CUSTOMREQUEST, $method );
-
- # Set the referer to $wgTitle, even in command-line mode
- # This is useful for interwiki transclusion, where the foreign
- # server wants to know what the referring page is.
- # $_SERVER['REQUEST_URI'] gives a less reliable indication of the
- # referring page.
- if ( is_object( $wgTitle ) ) {
- curl_setopt( $c, CURLOPT_REFERER, $wgTitle->getFullURL() );
- }
-
- if ( is_array( $curlOptions ) ) {
- foreach( $curlOptions as $option => $value ) {
- curl_setopt( $c, $option, $value );
- }
- }
+ // update the wgServer var ( since cmd line thinks we are localhost
+ // when we are really orgServer)
+ if( isset( $sd['orgServer'] ) && $sd['orgServer'] ) {
+ $wgServer = $sd['orgServer'];
+ }
+ // close down the session so we can other http queries can get session
+ // updates: (if not $wgSessionsInMemcached)
+ if( !$wgSessionsInMemcached )
+ session_write_close();
- ob_start();
- curl_exec( $c );
- $text = ob_get_contents();
- ob_end_clean();
+ $req = HttpRequest::newRequest( $sd['url'], array(
+ 'target_file_path' => $sd['target_file_path'],
+ 'upload_session_key'=> $upload_session_key,
+ 'timeout' => $wgAsyncHTTPTimeout,
+ 'do_close_session_update' => true
+ ) );
+ // run the actual request .. (this can take some time)
+ wfDebug( __METHOD__ . 'do Session Download :: ' . $sd['url'] . ' tf: ' .
+ $sd['target_file_path'] . "\n\n");
+ $status = $req->doRequest();
+ //wfDebug("done with req status is: ". $status->isOK(). ' '.$status->getWikiText(). "\n");
- # Don't return the text of error messages, return false on error
- $retcode = curl_getinfo( $c, CURLINFO_HTTP_CODE );
- if ( $retcode != 200 ) {
- wfDebug( __METHOD__ . ": HTTP return code $retcode\n" );
- $text = false;
- }
- # Don't return truncated output
- $errno = curl_errno( $c );
- if ( $errno != CURLE_OK ) {
- $errstr = curl_error( $c );
- wfDebug( __METHOD__ . ": CURL error code $errno: $errstr\n" );
- $text = false;
- }
- curl_close( $c );
- } else {
- # Otherwise use file_get_contents...
- # This doesn't have local fetch capabilities...
+ // start up the session again:
+ if( session_start() === false ) {
+ wfDebug( __METHOD__ . ' ERROR:: Could not start session');
+ }
+ // grab the updated session data pointer
+ $sd =& $_SESSION['wsDownload'][$upload_session_key];
+ // if error update status:
+ if( !$status->isOK() ) {
+ $sd['apiUploadResult'] = FormatJson::encode(
+ array( 'error' => $status->getWikiText() )
+ );
+ }
+ // if status okay process upload using fauxReq to api:
+ if( $status->isOK() ){
+ // setup the FauxRequest
+ $fauxReqData = $sd['mParams'];
- $headers = array( "User-Agent: " . self :: userAgent() );
- if( strcasecmp( $method, 'post' ) == 0 ) {
- // Required for HTTP 1.0 POSTs
- $headers[] = "Content-Length: 0";
+ // Fix boolean parameters
+ foreach( $fauxReqData as $k => $v ) {
+ if( $v === false )
+ unset( $fauxReqData[$k] );
}
- $opts = array(
- 'http' => array(
- 'method' => $method,
- 'header' => implode( "\r\n", $headers ),
- 'timeout' => $timeout ) );
- $ctx = stream_context_create($opts);
- $text = file_get_contents( $url, false, $ctx );
+ $fauxReqData['action'] = 'upload';
+ $fauxReqData['format'] = 'json';
+ $fauxReqData['internalhttpsession'] = $upload_session_key;
+ // evil but no other clean way about it:
+ $faxReq = new FauxRequest( $fauxReqData, true );
+ $processor = new ApiMain( $faxReq, $wgEnableWriteAPI );
+
+ //init the mUpload var for the $processor
+ $processor->execute();
+ $processor->getResult()->cleanUpUTF8();
+ $printer = $processor->createPrinterByName( 'json' );
+ $printer->initPrinter( false );
+ ob_start();
+ $printer->execute();
+ $apiUploadResult = ob_get_clean();
+
+ // the status updates runner will grab the result form the session:
+ $sd['apiUploadResult'] = $apiUploadResult;
}
- return $text;
+ // close the session:
+ session_write_close();
}
/**
}
return false;
}
-
+
/**
* Return a standard user-agent we can use for external requests.
*/
global $wgVersion;
return "MediaWiki/$wgVersion";
}
+
+ /**
+ * Checks that the given URI is a valid one
+ * @param $uri Mixed: URI to check for validity
+ */
+ public static function isValidURI( $uri ){
+ return preg_match(
+ '/(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/',
+ $uri,
+ $matches
+ );
+ }
+}
+
+class HttpRequest {
+ var $target_file_path;
+ var $upload_session_key;
+ function __construct( $url, $opt ){
+
+ global $wgSyncHTTPTimeout;
+ $this->url = $url;
+ // set the timeout to default sync timeout (unless the timeout option is provided)
+ $this->timeout = ( isset( $opt['timeout'] ) ) ? $opt['timeout'] : $wgSyncHTTPTimeout;
+ //check special key default
+ if($this->timeout == 'default'){
+ $opts['timeout'] = $wgSyncHTTPTimeout;
+ }
+
+ $this->method = ( isset( $opt['method'] ) ) ? $opt['method'] : 'GET';
+ $this->target_file_path = ( isset( $opt['target_file_path'] ) )
+ ? $opt['target_file_path'] : false;
+ $this->upload_session_key = ( isset( $opt['upload_session_key'] ) )
+ ? $opt['upload_session_key'] : false;
+ $this->headers_only = ( isset( $opt['headers_only'] ) ) ? $opt['headers_only'] : false;
+ $this->do_close_session_update = isset( $opt['do_close_session_update'] );
+ $this->postData = isset( $opt['postdata'] ) ? $opt['postdata'] : '';
+
+ $this->proxy = isset( $opt['proxy'] )? $opt['proxy'] : '';
+
+ $this->ssl_verifyhost = (isset( $opt['ssl_verifyhost'] ))? $opt['ssl_verifyhost']: false;
+
+ $this->cainfo = (isset( $opt['cainfo'] ))? $op['cainfo']: false;
+
+ }
+
+ public static function newRequest($url, $opt){
+ # select the handler (use curl if available)
+ if ( function_exists( 'curl_init' ) ) {
+ return new curlHttpRequest($url, $opt);
+ } else {
+ return new phpHttpRequest($url, $opt);
+ }
+ }
+
+ /**
+ * Get the contents of a file by HTTP
+ * @param $url string Full URL to act on
+ * @param $Opt associative array Optional array of options:
+ * 'method' => 'GET', 'POST' etc.
+ * 'target_file_path' => if curl should output to a target file
+ * 'adapter' => 'curl', 'soket'
+ */
+ public function doRequest() {
+ # Make sure we have a valid url
+ if( !Http::isValidURI( $this->url ) )
+ return Status::newFatal('bad-url');
+ //do the actual request:
+ return $this->doReq();
+ }
+}
+class curlHttpRequest extends HttpRequest {
+ public function doReq(){
+ global $wgHTTPProxy, $wgTitle;
+
+ $status = Status::newGood();
+ $c = curl_init( $this->url );
+
+ // only do proxy setup if ( not suppressed $this->proxy === false )
+ if( $this->proxy !== false ){
+ if( $this->proxy ){
+ curl_setopt( $c, CURLOPT_PROXY, $this->proxy );
+ } else if ( Http::isLocalURL( $this->url ) ) {
+ curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
+ } else if ( $wgHTTPProxy ) {
+ curl_setopt( $c, CURLOPT_PROXY, $wgHTTPProxy );
+ }
+ }
+
+ curl_setopt( $c, CURLOPT_TIMEOUT, $this->timeout );
+ curl_setopt( $c, CURLOPT_USERAGENT, Http::userAgent() );
+
+ if( $this->ssl_verifyhost )
+ curl_setopt( $c, CURLOPT_SSL_VERIFYHOST, $this->ssl_verifyhost);
+
+ if( $this->cainfo )
+ curl_setopt( $c, CURLOPT_CAINFO, $this->cainfo);
+
+ if ( $this->headers_only ) {
+ curl_setopt( $c, CURLOPT_NOBODY, true );
+ curl_setopt( $c, CURLOPT_HEADER, true );
+ } elseif ( $this->method == 'POST' ) {
+ curl_setopt( $c, CURLOPT_POST, true );
+ curl_setopt( $c, CURLOPT_POSTFIELDS, $this->postData );
+ // Suppress 'Expect: 100-continue' header, as some servers
+ // will reject it with a 417 and Curl won't auto retry
+ // with HTTP 1.0 fallback
+ curl_setopt( $c, CURLOPT_HTTPHEADER, array( 'Expect:' ) );
+ } else {
+ curl_setopt( $c, CURLOPT_CUSTOMREQUEST, $this->method );
+ }
+
+ # Set the referer to $wgTitle, even in command-line mode
+ # This is useful for interwiki transclusion, where the foreign
+ # server wants to know what the referring page is.
+ # $_SERVER['REQUEST_URI'] gives a less reliable indication of the
+ # referring page.
+ if ( is_object( $wgTitle ) ) {
+ curl_setopt( $c, CURLOPT_REFERER, $wgTitle->getFullURL() );
+ }
+
+ // set the write back function (if we are writing to a file)
+ if( $this->target_file_path ) {
+ $cwrite = new simpleFileWriter( $this->target_file_path,
+ $this->upload_session_key,
+ $this->do_close_session_update
+ );
+ if( !$cwrite->status->isOK() ) {
+ wfDebug( __METHOD__ . "ERROR in setting up simpleFileWriter\n" );
+ $status = $cwrite->status;
+ return $status;
+ }
+ curl_setopt( $c, CURLOPT_WRITEFUNCTION, array( $cwrite, 'callbackWriteBody' ) );
+ }
+
+ // start output grabber:
+ if( !$this->target_file_path )
+ ob_start();
+
+ //run the actual curl_exec:
+ try {
+ if ( false === curl_exec( $c ) ) {
+ $error_txt ='Error sending request: #' . curl_errno( $c ) .' '. curl_error( $c );
+ wfDebug( __METHOD__ . $error_txt . "\n" );
+ $status = Status::newFatal( $error_txt );
+ }
+ } catch ( Exception $e ) {
+ // do something with curl exec error?
+ }
+ // if direct request output the results to the stats value:
+ if( !$this->target_file_path && $status->isOK() ) {
+ $status->value = ob_get_contents();
+ ob_end_clean();
+ }
+ // if we wrote to a target file close up or return error
+ if( $this->target_file_path ) {
+ $cwrite->close();
+ if( !$cwrite->status->isOK() ) {
+ return $cwrite->status;
+ }
+ }
+
+ if ( $this->headers_only ) {
+ $headers = explode( "\n", $status->value );
+ $headerArray = array();
+ foreach ( $headers as $header ) {
+ if ( !strlen( trim( $header ) ) )
+ continue;
+ $headerParts = explode( ':', $header, 2 );
+ if ( count( $headerParts ) == 1 ) {
+ $headerArray[] = trim( $header );
+ } else {
+ list( $key, $val ) = $headerParts;
+ $headerArray[trim( $key )] = trim( $val );
+ }
+ }
+ $status->value = $headerArray;
+ } else {
+ # Don't return the text of error messages, return false on error
+ $retcode = curl_getinfo( $c, CURLINFO_HTTP_CODE );
+ if ( $retcode != 200 ) {
+ wfDebug( __METHOD__ . ": HTTP return code $retcode\n" );
+ $status = Status::newFatal( "HTTP return code $retcode\n" );
+ }
+ # Don't return truncated output
+ $errno = curl_errno( $c );
+ if ( $errno != CURLE_OK ) {
+ $errstr = curl_error( $c );
+ wfDebug( __METHOD__ . ": CURL error code $errno: $errstr\n" );
+ $status = Status::newFatal( " CURL error code $errno: $errstr\n" );
+ }
+ }
+
+ curl_close( $c );
+ // return the result obj
+ return $status;
+ }
+}
+class phpHttpRequest extends HttpRequest {
+ public function doReq() {
+ global $wgTitle, $wgHTTPProxy;
+ # Check for php.ini allow_url_fopen
+ if( !ini_get( 'allow_url_fopen' ) ) {
+ return Status::newFatal( 'allow_url_fopen needs to be enabled for http copy to work' );
+ }
+
+ // start with good status:
+ $status = Status::newGood();
+
+ if ( $this->headers_only ) {
+ $status->value = get_headers( $this->url, 1 );
+ return $status;
+ }
+
+ // setup the headers
+ $headers = array( "User-Agent: " . Http::userAgent() );
+ if ( is_object( $wgTitle ) ) {
+ $headers[] = "Referer: ". $wgTitle->getFullURL();
+ }
+
+ if( strcasecmp( $this->method, 'post' ) == 0 ) {
+ // Required for HTTP 1.0 POSTs
+ $headers[] = "Content-Length: 0";
+ }
+
+ $httpContextOptions = array(
+ 'method' => $this->method,
+ 'header' => implode( "\r\n", $headers ),
+ 'timeout' => $this->timeout
+ );
+
+ // Proxy setup:
+ if( $this->proxy ){
+ $httpContextOptions['proxy'] = 'tcp://' . $this->proxy;
+ }else if ( Http::isLocalURL( $this->url ) ) {
+ $httpContextOptions['proxy'] = 'tcp://localhost:80';
+ } elseif ( $wgHTTPProxy ) {
+ $httpContextOptions['proxy'] = 'tcp://' . $wgHTTPProxy ;
+ }
+
+ $fcontext = stream_context_create (
+ array(
+ 'http' => $httpContextOptions
+ )
+ );
+
+ $fh = fopen( $this->url, "r", false, $fcontext);
+
+ // set the write back function (if we are writing to a file)
+ if( $this->target_file_path ) {
+ $cwrite = new simpleFileWriter( $this->target_file_path,
+ $this->upload_session_key, $this->do_close_session_update );
+ if( !$cwrite->status->isOK() ) {
+ wfDebug( __METHOD__ . "ERROR in setting up simpleFileWriter\n" );
+ $status = $cwrite->status;
+ return $status;
+ }
+
+ // Read $fh into the simpleFileWriter (grab in 64K chunks since
+ // it's likely a ~large~ media file)
+ while ( !feof( $fh ) ) {
+ $contents = fread( $fh, 65536 );
+ $cwrite->callbackWriteBody( $fh, $contents );
+ }
+ $cwrite->close();
+ // check for simpleFileWriter error:
+ if( !$cwrite->status->isOK() ) {
+ return $cwrite->status;
+ }
+ } else {
+ // read $fh into status->value
+ $status->value = @stream_get_contents( $fh );
+ }
+ //close the url file wrapper
+ fclose( $fh );
+
+ // check for "false"
+ if( $status->value === false ) {
+ $status->error( 'file_get_contents-failed' );
+ }
+ return $status;
+ }
+
+}
+
+/**
+ * SimpleFileWriter with session id updates
+ */
+class simpleFileWriter {
+ var $target_file_path;
+ var $status = null;
+ var $session_id = null;
+ var $session_update_interval = 0; // how often to update the session while downloading
+
+ function simpleFileWriter( $target_file_path, $upload_session_key,
+ $do_close_session_update = false )
+ {
+ $this->target_file_path = $target_file_path;
+ $this->upload_session_key = $upload_session_key;
+ $this->status = Status::newGood();
+ $this->do_close_session_update = $do_close_session_update;
+ // open the file:
+ $this->fp = fopen( $this->target_file_path, 'w' );
+ if( $this->fp === false ) {
+ $this->status = Status::newFatal( 'HTTP::could-not-open-file-for-writing' );
+ }
+ // true start time
+ $this->prevTime = time();
+ }
+
+ public function callbackWriteBody( $ch, $data_packet ) {
+ global $wgMaxUploadSize, $wgLang;
+
+ // write out the content
+ if( fwrite( $this->fp, $data_packet ) === false ) {
+ wfDebug( __METHOD__ ." ::could-not-write-to-file\n" );
+ $this->status = Status::newFatal( 'HTTP::could-not-write-to-file' );
+ return 0;
+ }
+
+ // check file size:
+ clearstatcache();
+ $this->current_fsize = filesize( $this->target_file_path );
+
+ if( $this->current_fsize > $wgMaxUploadSize ) {
+ wfDebug( __METHOD__ . " ::http download too large\n" );
+ $this->status = Status::newFatal( 'HTTP::file-has-grown-beyond-upload-limit-killing: ' .
+ 'downloaded more than ' .
+ $wgLang->formatSize( $wgMaxUploadSize ) . ' ' );
+ return 0;
+ }
+ // if more than session_update_interval second have passed update_session_progress
+ if( $this->do_close_session_update && $this->upload_session_key &&
+ ( ( time() - $this->prevTime ) > $this->session_update_interval ) ) {
+ $this->prevTime = time();
+ $session_status = $this->update_session_progress();
+ if( !$session_status->isOK() ) {
+ $this->status = $session_status;
+ wfDebug( __METHOD__ . ' update session failed or was canceled');
+ return 0;
+ }
+ }
+ return strlen( $data_packet );
+ }
+
+ public function update_session_progress() {
+ global $wgSessionsInMemcached;
+ $status = Status::newGood();
+ // start the session (if necessary)
+ if( !$wgSessionsInMemcached ) {
+ wfSuppressWarnings();
+ if( session_start() === false ) {
+ wfDebug( __METHOD__ . ' could not start session' );
+ exit( 0 );
+ }
+ wfRestoreWarnings();
+ }
+ $sd =& $_SESSION['wsDownload'][ $this->upload_session_key ];
+ // check if the user canceled the request:
+ if( isset( $sd['user_cancel'] ) && $sd['user_cancel'] == true ) {
+ //@@todo kill the download
+ return Status::newFatal( 'user-canceled-request' );
+ }
+ // update the progress bytes download so far:
+ $sd['loaded'] = $this->current_fsize;
+
+ // close down the session so we can other http queries can get session updates:
+ if( !$wgSessionsInMemcached )
+ session_write_close();
+
+ return $status;
+ }
+
+ public function close() {
+ // do a final session update:
+ if( $this->do_close_session_update ) {
+ $this->update_session_progress();
+ }
+ // close up the file handle:
+ if( false === fclose( $this->fp ) ) {
+ $this->status = Status::newFatal( 'HTTP::could-not-close-file' );
+ }
+ }
+
}