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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsIChannel.idl"

interface nsIFile;
interface nsIZipEntry;

[scriptable, builtinclass, uuid(6b438dc3-9ba0-4f5f-b83f-82e1d7b98604)]
interface nsIJARChannel : nsIChannel
{
    /**
     * Returns TRUE if the JAR file is not safe (if the content type reported
     * by the server for a remote JAR is not of an expected type).  Scripting,
     * redirects, and plugins should be disabled when loading from this
     * channel.
     */
    [infallible] readonly attribute boolean isUnsafe;

    /**
     * Forces the uri to be a app:// uri.
     */
    void setAppURI(in nsIURI uri);

    /**
     * Returns the JAR file.
     */
    readonly attribute nsIFile jarFile;

    /**
     * Returns the zip entry if the file is synchronously accessible.
     * This will work even without opening the channel.
     */
    readonly attribute nsIZipEntry zipEntry;

    /**
     * For child process, set this to make sure that a valid file descriptor of
     * JAR file is always provided when calling NSPRFileDesc().
     * Must be set before Open() or AsyncOpen() to be effective.
     *
     * Note that the file descriptor returned by NSPRFileDesc() is duplicated
     * from the original, which shares its file offset with the original.  If
     * the file offset is modified (ex: by lseek/read/write) on one of the
     * shared descriptors, the offset is also changed for the other.
     * It can be safely used only with operations that take absolute offsets,
     * such as mmap/pread/pwrite.
     */
    void ensureChildFd();
};