示例#1
0
/**
* Send file to browser
*/
function send_file_to_browser($attachment, $upload_dir, $category)
{
    global $user, $db, $config, $phpbb_root_path;
    $filename = $phpbb_root_path . $upload_dir . '/' . $attachment['physical_filename'];
    if (!@file_exists($filename)) {
        trigger_error($user->lang['ERROR_NO_ATTACHMENT'] . '<br /><br />' . sprintf($user->lang['FILE_NOT_FOUND_404'], $filename));
    }
    // Correct the mime type - we force application/octetstream for all files, except images
    // Please do not change this, it is a security precaution
    if ($category != ATTACHMENT_CATEGORY_IMAGE || strpos($attachment['mimetype'], 'image') !== 0) {
        $attachment['mimetype'] = strpos(strtolower($user->browser), 'msie') !== false || strpos(strtolower($user->browser), 'opera') !== false ? 'application/octetstream' : 'application/octet-stream';
    }
    if (@ob_get_length()) {
        @ob_end_clean();
    }
    // Now send the File Contents to the Browser
    $size = @filesize($filename);
    // To correctly display further errors we need to make sure we are using the correct headers for both (unsetting content-length may not work)
    // Check if headers already sent or not able to get the file contents.
    if (headers_sent() || !@file_exists($filename) || !@is_readable($filename)) {
        // PHP track_errors setting On?
        if (!empty($php_errormsg)) {
            trigger_error($user->lang['UNABLE_TO_DELIVER_FILE'] . '<br />' . sprintf($user->lang['TRACKED_PHP_ERROR'], $php_errormsg));
        }
        trigger_error('UNABLE_TO_DELIVER_FILE');
    }
    // Now the tricky part... let's dance
    header('Pragma: public');
    /**
     * Commented out X-Sendfile support. To not expose the physical filename within the header if xsendfile is absent we need to look into methods of checking it's status.
     *
     * Try X-Sendfile since it is much more server friendly - only works if the path is *not* outside of the root path...
     * lighttpd has core support for it. An apache2 module is available at http://celebnamer.celebworld.ws/stuff/mod_xsendfile/
     *
     * Not really ideal, but should work fine...
     * <code>
     *	if (strpos($upload_dir, '/') !== 0 && strpos($upload_dir, '../') === false)
     *	{
     *		header('X-Sendfile: ' . $filename);
     *	}
     * </code>
     */
    // Send out the Headers. Do not set Content-Disposition to inline please, it is a security measure for users using the Internet Explorer.
    header('Content-Type: ' . $attachment['mimetype']);
    if (empty($user->browser) || strpos(strtolower($user->browser), 'msie') !== false) {
        header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
        if (empty($user->browser) || strpos(strtolower($user->browser), 'msie 6.0') !== false) {
            header('expires: -1');
        }
    } else {
        header('Content-Disposition: ' . (strpos($attachment['mimetype'], 'image') === 0 ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
    }
    if ($size) {
        header("Content-Length: {$size}");
    }
    // Try to deliver in chunks
    @set_time_limit(0);
    $fp = @fopen($filename, 'rb');
    if ($fp !== false) {
        while (!feof($fp)) {
            echo fread($fp, 8192);
        }
        fclose($fp);
    } else {
        @readfile($filename);
    }
    flush();
    exit;
}
示例#2
0
/**
* Send file to browser
*/
function send_file_to_browser($attachment, $upload_dir, $category)
{
    global $user, $db, $config, $phpbb_root_path, $request;
    $filename = $phpbb_root_path . $upload_dir . '/' . $attachment['physical_filename'];
    if (!@file_exists($filename)) {
        send_status_line(404, 'Not Found');
        trigger_error('ERROR_NO_ATTACHMENT');
    }
    // Correct the mime type - we force application/octetstream for all files, except images
    // Please do not change this, it is a security precaution
    if ($category != ATTACHMENT_CATEGORY_IMAGE || strpos($attachment['mimetype'], 'image') !== 0) {
        $attachment['mimetype'] = strpos(strtolower($user->browser), 'msie') !== false || strpos(strtolower($user->browser), 'opera') !== false ? 'application/octetstream' : 'application/octet-stream';
    }
    if (@ob_get_length()) {
        @ob_end_clean();
    }
    // Now send the File Contents to the Browser
    $size = @filesize($filename);
    // To correctly display further errors we need to make sure we are using the correct headers for both (unsetting content-length may not work)
    // Check if headers already sent or not able to get the file contents.
    if (headers_sent() || !@file_exists($filename) || !@is_readable($filename)) {
        // PHP track_errors setting On?
        if (!empty($php_errormsg)) {
            send_status_line(500, 'Internal Server Error');
            trigger_error($user->lang['UNABLE_TO_DELIVER_FILE'] . '<br />' . sprintf($user->lang['TRACKED_PHP_ERROR'], $php_errormsg));
        }
        send_status_line(500, 'Internal Server Error');
        trigger_error('UNABLE_TO_DELIVER_FILE');
    }
    // Make sure the database record for the filesize is correct
    if ($size > 0 && $size != $attachment['filesize']) {
        // Update database record
        $sql = 'UPDATE ' . ATTACHMENTS_TABLE . '
			SET filesize = ' . (int) $size . '
			WHERE attach_id = ' . (int) $attachment['attach_id'];
        $db->sql_query($sql);
    }
    // Now the tricky part... let's dance
    header('Cache-Control: public');
    // Send out the Headers. Do not set Content-Disposition to inline please, it is a security measure for users using the Internet Explorer.
    header('Content-Type: ' . $attachment['mimetype']);
    if (phpbb_is_greater_ie_version($user->browser, 7)) {
        header('X-Content-Type-Options: nosniff');
    }
    if ($category == ATTACHMENT_CATEGORY_FLASH && $request->variable('view', 0) === 1) {
        // We use content-disposition: inline for flash files and view=1 to let it correctly play with flash player 10 - any other disposition will fail to play inline
        header('Content-Disposition: inline');
    } else {
        if (empty($user->browser) || strpos(strtolower($user->browser), 'msie') !== false && !phpbb_is_greater_ie_version($user->browser, 7)) {
            header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
            if (empty($user->browser) || strpos(strtolower($user->browser), 'msie 6.0') !== false) {
                header('Expires: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
            }
        } else {
            header('Content-Disposition: ' . (strpos($attachment['mimetype'], 'image') === 0 ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
            if (phpbb_is_greater_ie_version($user->browser, 7) && strpos($attachment['mimetype'], 'image') !== 0) {
                header('X-Download-Options: noopen');
            }
        }
    }
    // Close the db connection before sending the file etc.
    file_gc(false);
    if (!set_modified_headers($attachment['filetime'], $user->browser)) {
        // We make sure those have to be enabled manually by defining a constant
        // because of the potential disclosure of full attachment path
        // in case support for features is absent in the webserver software.
        if (defined('PHPBB_ENABLE_X_ACCEL_REDIRECT') && PHPBB_ENABLE_X_ACCEL_REDIRECT) {
            // X-Accel-Redirect - http://wiki.nginx.org/XSendfile
            header('X-Accel-Redirect: ' . $user->page['root_script_path'] . $upload_dir . '/' . $attachment['physical_filename']);
            exit;
        } else {
            if (defined('PHPBB_ENABLE_X_SENDFILE') && PHPBB_ENABLE_X_SENDFILE && !phpbb_http_byte_range($size)) {
                // X-Sendfile - http://blog.lighttpd.net/articles/2006/07/02/x-sendfile
                // Lighttpd's X-Sendfile does not support range requests as of 1.4.26
                // and always requires an absolute path.
                header('X-Sendfile: ' . dirname(__FILE__) . "/../{$upload_dir}/{$attachment['physical_filename']}");
                exit;
            }
        }
        if ($size) {
            header("Content-Length: {$size}");
        }
        // Try to deliver in chunks
        @set_time_limit(0);
        $fp = @fopen($filename, 'rb');
        if ($fp !== false) {
            // Deliver file partially if requested
            if ($range = phpbb_http_byte_range($size)) {
                fseek($fp, $range['byte_pos_start']);
                send_status_line(206, 'Partial Content');
                header('Content-Range: bytes ' . $range['byte_pos_start'] . '-' . $range['byte_pos_end'] . '/' . $range['bytes_total']);
                header('Content-Length: ' . $range['bytes_requested']);
            }
            while (!feof($fp)) {
                echo fread($fp, 8192);
            }
            fclose($fp);
        } else {
            @readfile($filename);
        }
        flush();
    }
    exit;
}
 }
 // now the tricky part... let's dance
 header('Pragma: public');
 // send out the headers. do not set content-disposition to inline please, it is a security measure for users using the internet explorer
 $is_ie8 = strpos(strtolower($user->browser), 'msie 8.0') !== false;
 header('Content-Type: ' . $attachment['mimetype']);
 if ($is_ie8) {
     header('X-Content-Type-Options: nosniff');
 }
 if (empty($user->browser) || !$is_ie8 && strpos(strtolower($user->browser), 'msie') !== false) {
     header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
     if (empty($user->browser) || strpos(strtolower($user->browser), 'msie 6.0') !== false) {
         header('expires: -1');
     }
 } else {
     header('Content-Disposition: ' . (strpos($attachment['mimetype'], 'image') === 0 ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
     if ($is_ie8 && strpos($attachment['mimetype'], 'image') !== 0) {
         header('X-Download-Options: noopen');
     }
 }
 if ($size) {
     header("Content-Length: {$size}");
 }
 // clean up properly before sending the file
 garbage_collection();
 if (!set_modified_headers($attachment['filetime'], $user->browser)) {
     // Try to deliver in chunks
     @set_time_limit(0);
     $fp = @fopen($filename, 'rb');
     if ($fp !== false) {
         while (!feof($fp)) {
示例#4
0
/**
* Send file to browser
*/
function send_file_to_browser($attachment, $upload_dir)
{
    $filename = $upload_dir . $attachment['physical_filename'];
    if (!@file_exists($filename)) {
        trigger_error(phpbb::$user->lang['ERROR_NO_ATTACHMENT'] . '<br /><br />' . sprintf(phpbb::$user->lang['FILE_NOT_FOUND_404'], $filename));
    }
    // Correct the mime type - we force application/octetstream for all files, except images
    // Please do not change this, it is a security precaution
    if (strpos($attachment['mimetype'], 'image') !== 0) {
        $attachment['mimetype'] = strpos(strtolower(phpbb::$user->browser), 'msie') !== false || strpos(strtolower(phpbb::$user->browser), 'opera') !== false ? 'application/octetstream' : 'application/octet-stream';
    }
    if (@ob_get_length()) {
        @ob_end_clean();
    }
    // Now send the File Contents to the Browser
    $size = @filesize($filename);
    // To correctly display further errors we need to make sure we are using the correct headers for both (unsetting content-length may not work)
    // Check if headers already sent or not able to get the file contents.
    if (headers_sent() || !@file_exists($filename) || !@is_readable($filename)) {
        // PHP track_errors setting On?
        if (!empty($php_errormsg)) {
            trigger_error(phpbb::$user->lang['UNABLE_TO_DELIVER_FILE'] . '<br />' . sprintf(phpbb::$user->lang['TRACKED_PHP_ERROR'], $php_errormsg));
        }
        trigger_error('UNABLE_TO_DELIVER_FILE');
    }
    // Now the tricky part... let's dance
    header('Pragma: public');
    // Send out the Headers. Do not set Content-Disposition to inline please, it is a security measure for users using the Internet Explorer.
    $is_ie8 = strpos(strtolower(phpbb::$user->browser), 'msie 8.0') !== false;
    header('Content-Type: ' . $attachment['mimetype']);
    if ($is_ie8) {
        header('X-Content-Type-Options: nosniff');
    }
    if (empty(phpbb::$user->browser) || !$is_ie8 && strpos(strtolower(phpbb::$user->browser), 'msie') !== false) {
        header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
        if (empty(phpbb::$user->browser) || strpos(strtolower(phpbb::$user->browser), 'msie 6.0') !== false) {
            header('expires: -1');
        }
    } else {
        header('Content-Disposition: ' . (strpos($attachment['mimetype'], 'image') === 0 ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
        if ($is_ie8 && strpos($attachment['mimetype'], 'image') !== 0) {
            header('X-Download-Options: noopen');
        }
    }
    if ($size) {
        header("Content-Length: {$size}");
    }
    // Close the db connection before sending the file
    phpbb::$db->sql_close();
    if (!set_modified_headers($attachment['filetime'], phpbb::$user->browser)) {
        // Try to deliver in chunks
        @set_time_limit(0);
        $fp = @fopen($filename, 'rb');
        if ($fp !== false) {
            while (!feof($fp)) {
                echo fread($fp, 8192);
            }
            fclose($fp);
        } else {
            @readfile($filename);
        }
        flush();
    }
    file_gc();
}
示例#5
-1
    /**
     * Send file to browser
     *
     * Copy of send_file_to_browser() from functions_download.php
     * with some minor modifications to work correctly in Titania.
     *
     * @param array $attachment	Attachment data.
     * @param string $filename	Full path to the attachment file.
     * @param int $category		Attachment category.
     *
     * @return \Symfony\Component\HttpFoundation\Response if error found. Otherwise method exits.
     */
    protected function send_file_to_browser($attachment, $filename, $category)
    {
        if (!@file_exists($filename)) {
            return $this->helper->error('ERROR_NO_ATTACHMENT', 404);
        }
        // Correct the mime type - we force application/octetstream for all files, except images
        // Please do not change this, it is a security precaution
        if ($category != ATTACHMENT_CATEGORY_IMAGE || strpos($attachment['mimetype'], 'image') !== 0) {
            $attachment['mimetype'] = strpos(strtolower($this->user->browser), 'msie') !== false || strpos(strtolower($this->user->browser), 'opera') !== false ? 'application/octetstream' : 'application/octet-stream';
        }
        if (@ob_get_length()) {
            @ob_end_clean();
        }
        // Now send the File Contents to the Browser
        $size = @filesize($filename);
        // To correctly display further errors we need to make sure we are using the correct headers for both (unsetting content-length may not work)
        // Check if headers already sent or not able to get the file contents.
        if (headers_sent() || !@file_exists($filename) || !@is_readable($filename)) {
            // PHP track_errors setting On?
            if (!empty($php_errormsg)) {
                return $this->helper->error($this->user->lang['UNABLE_TO_DELIVER_FILE'] . '<br />' . $this->user->lang('TRACKED_PHP_ERROR', $php_errormsg), self::INTERNAL_SERVER_ERROR);
            }
            return $this->helper->error('UNABLE_TO_DELIVER_FILE', self::INTERNAL_SERVER_ERROR);
        }
        // Make sure the database record for the filesize is correct
        if ($size > 0 && $size != $attachment['filesize']) {
            // Update database record
            $sql = 'UPDATE ' . TITANIA_ATTACHMENTS_TABLE . '
				SET filesize = ' . (int) $size . '
				WHERE attachment_id = ' . (int) $attachment['attachment_id'];
            $this->db->sql_query($sql);
        }
        // Now the tricky part... let's dance
        header('Pragma: public');
        // Send out the Headers. Do not set Content-Disposition to inline please, it is a security measure for users using the Internet Explorer.
        header('Content-Type: ' . $attachment['mimetype']);
        if (phpbb_is_greater_ie_version($this->user->browser, 7)) {
            header('X-Content-Type-Options: nosniff');
        }
        if ($category == ATTACHMENT_CATEGORY_FLASH && request_var('view', 0) === 1) {
            // We use content-disposition: inline for flash files and view=1 to let it correctly play with flash player 10 - any other disposition will fail to play inline
            header('Content-Disposition: inline');
        } else {
            if (empty($this->user->browser) || strpos(strtolower($this->user->browser), 'msie') !== false && !phpbb_is_greater_ie_version($this->user->browser, 7)) {
                header('Content-Disposition: attachment; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
                if (empty($this->user->browser) || strpos(strtolower($this->user->browser), 'msie 6.0') !== false) {
                    header('expires: -1');
                }
            } else {
                header('Content-Disposition: ' . (strpos($attachment['mimetype'], 'image') === 0 ? 'inline' : 'attachment') . '; ' . header_filename(htmlspecialchars_decode($attachment['real_filename'])));
                if (phpbb_is_greater_ie_version($this->user->browser, 7) && strpos($attachment['mimetype'], 'image') !== 0) {
                    header('X-Download-Options: noopen');
                }
            }
        }
        if ($size) {
            header("Content-Length: {$size}");
        }
        // Close the db connection before sending the file etc.
        file_gc(false);
        if (!set_modified_headers($attachment['filetime'], $this->user->browser)) {
            // Try to deliver in chunks
            @set_time_limit(0);
            $fp = @fopen($filename, 'rb');
            if ($fp !== false) {
                // Deliver file partially if requested
                if ($range = phpbb_http_byte_range($size)) {
                    fseek($fp, $range['byte_pos_start']);
                    send_status_line(206, 'Partial Content');
                    header('Content-Range: bytes ' . $range['byte_pos_start'] . '-' . $range['byte_pos_end'] . '/' . $range['bytes_total']);
                    header('Content-Length: ' . $range['bytes_requested']);
                }
                while (!feof($fp)) {
                    echo fread($fp, 8192);
                }
                fclose($fp);
            } else {
                @readfile($filename);
            }
            flush();
        }
        exit;
    }