off_update.php

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<?php

function off_update(&$action) {
    $parms = array();
    $parms['download'] = getHttpVars('download', '');
    $parms['version'] = getHttpVars('version', '');
    $parms['buildid'] = getHttpVars('buildid', '');
    $parms['os'] = getHttpVars('os', '');
    $parms['arch'] = getHttpVars('arch', '');

    $parms['clientDir'] = $action->parent->getParam('OFFLINE_CLIENT_BUILD_OUTPUT_DIR', '');
        if( ! is_dir($parms['clientDir']) ) {
            http_400();
            $err = sprintf(sprintf('OFFLINE_CLIENT_BUILD_OUTPUT_DIR: '._("OFFLINE:%s directory not found"), $parms['clientDir']));
            error_log(__METHOD__." ".$err);
            print $err;
                exit(0);
        }
        $parms['clientDir'] = realpath($parms['clientDir']);

    switch( $parms['download'] ) {
        case 'update':
            return off_update_download_update($parms, $action);
            break;
        case 'complete':
            return off_update_download_complete($parms, $action);
            break;
        case 'partial':
            return off_update_download_partial($parms, $action);
            break;
    }
    return off_update_unknown_download($parms, $action);
}

function http_400() {
    header('HTTP/1.1 400 Bad Request');
    header('Content-Type: text/plain');
}

function http_404() {
    header('HTTP/1.1 404 Not Found');
    header('Content-Type: text/plain');
}

function parseInfo($infoFile) {
    if( ! is_file($infoFile) ) {
        return array();
    }
    $info = file_get_contents($infoFile);
    if( $info === false ) {
        return array();
    }
    $lines = preg_split('/\n/', $info);
    $parsedInfo = array();
    foreach( $lines as &$line ) {
        $line = trim($line);
        if( preg_match('/^(?<key>[^=]+)=(?<value>.*)$/', $line, $m) ) {
            $parsedInfo[$m['key']] = $m['value'];
        }
    }
    unset($line);
    return $parsedInfo;
}

function sendFile($type, $filename) {
    if( ! is_file($filename) ) {
        http_404();
        $err = sprintf("File '%s' not found.", $filename);
        error_log(__METHOD__." ".$err);
        return $err;
    }

    $fh = fopen($filename, 'r');
    if( $fh === false ) {
        http_404();
        $err = sprintf("Error opening file '%s'.", $filename);
        error_log(__METHOD__." ".$err);
        return $err;
    }

    header('HTTP/1.1 200 OK');
    header('Content-Type: ' . $type);
    header('Content-Length: ' . filesize($filename));
    fpassthru($fh);
    fclose($fh);
    return '';
}

function off_update_unknown_download(&$parms, &$action) {
    http_400();
    $err = sprintf("Unknown download '%s'.", $parms['download']);
    error_log(__METHOD__." ".$err);
    print $err;
    exit(0);
}

function off_update_download_update(&$parms, &$action) {
    $buildList = getBuildFor($parms['os'], $parms['arch']);
    if( count($buildList) <= 0 ) {
        http_404();
        $err = sprintf("No builds found for {os='%s', arch='%s'}.", $parms['os'], $parms['arch']);
        error_log(__METHOD__." ".$err);
        print $err;
        exit(0);
    }

    $core_externurl = getParam('CORE_EXTERNURL');

    $build = array_shift($buildList);

    $completeInfoFile = sprintf('%s/%s.complete.mar.info', $parms['clientDir'], $build['mar_basename']);
    $completeInfo = parseInfo($completeInfoFile);

    $partialInfoFile = sprintf('%s/%s.partial.mar.info', $parms['clientDir'], $build['mar_basename']);
    $partialInfo = parseInfo($partialInfoFile);

    $xml = "";
    $xml .= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
    $xml .= "<updates xmlns=\"http://www.mozilla.org/2005/app-update\">\n";
    $xml .= sprintf("<update type=\"major\" version=\"%s\" extensionVersion=\"%s\" buildID=\"%s\" detailsURL=\"%s\" >\n",
        $completeInfo['version'],
        $completeInfo['version'],
        $completeInfo['buildid'],
        sprintf("%s?app=OFFLINE&amp;action=OFF_DLCLIENT", $core_externurl)
    );

    if( $parms['version'] == $partialInfo['version_from'] && $parms['buildid'] == $partialInfo['buildid_from'] ) {
        /* Serve the partial update only if the client match the partial update */
        $xml .= sprintf("  <patch type=\"partial\" URL=\"%s\" hashFunction=\"%s\" hashValue=\"%s\" size=\"%s\" />\n",
            sprintf("%sguest.php?app=OFFLINE&amp;action=OFF_UPDATE&amp;download=partial&amp;version=%%VERSION%%&amp;buildid=%%BUILD_ID%%&amp;os=%s&amp;arch=%s",
                $core_externurl,
                $parms['os'],
                $parms['arch']
            ),
            $partialInfo['hashfunction'],
            $partialInfo['hashvalue'],
            $partialInfo['size']
        );
    }

    /* Serve the complete update */
    $xml .= sprintf("  <patch type=\"complete\" URL=\"%s\" hashFunction=\"%s\" hashValue=\"%s\" size=\"%s\" />\n",
        sprintf("%sguest.php?app=OFFLINE&amp;action=OFF_UPDATE&amp;download=complete&amp;version=%%VERSION%%&amp;buildid=%%BUILD_ID%%&amp;os=%s&amp;arch=%s",
            $core_externurl,
            $parms['os'],
            $parms['arch']
        ),
        $completeInfo['hashfunction'],
        $completeInfo['hashvalue'],
        $completeInfo['size']
    );

    $xml .= "</update>\n";
    $xml .= "</updates>\n";

    header('HTTP/1.1 200 OK');
    header('Content-Type: text/xml');
    header('Content-Length: ' . strlen($xml));
    echo $xml;
    exit(0);
}

function off_update_download_complete(&$parms, &$action) {
    $buildList = getBuildFor($parms['os'], $parms['arch']);
    if( count($buildList) <= 0 ) {
        http_404();
        $err = sprintf("No builds found for {os='%s', arch='%s'}.", $parms['os'], $parms['arch']);
        error_log(__METHOD__." ".$err);
        print $err;
        exit(0);
    }

    $build = array_shift($buildList);

    $completeMar = sprintf('%s/%s.complete.mar', $parms['clientDir'], $build['mar_basename']);
    if( ! is_file($completeMar) ) {
        http_404();
        $err = sprintf("Complete MAR '%s' not found.", $completeMar);
        error_log(__METHOD__." ".$err);
        exit(0);
    }

    sendFile('application/binary', $completeMar);
    exit(0);
}

function off_update_download_partial(&$parms, &$action) {
    $buildList = getBuildFor($parms['os'], $parms['arch']);
    if( count($buildList) <= 0 ) {
        http_404();
        $err = sprintf("No builds found for {os='%s', arch='%s'}.", $parms['os'], $parms['arch']);
        error_log(__METHOD__." ".$err);
        print $err;
        exit(0);
    }

    $build = array_shift($buildList);

    $partialMar = sprintf('%s/%s.partial.mar', $parms['clientDir'], $build['mar_basename']);

    sendfile('application/binary', $partialMar);
    exit(0);
}

function getBuildFor($os, $arch) {
    include_once('OFFLINE/Class.OfflineClientBuilder.php');

    $ocb = new OfflineClientBuilder();
    $buildList = $ocb->getOsArchList();

    $res = array();
    foreach( $buildList as &$build ) {
        if( $build['os'] == $os && $build['arch'] == $arch ) {
            $res []= $build;
        }
    }
    unset($build);

    return $res;
}

?>