gecko/netwerk/base/public/nsIIOService.idl

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
interface nsIProtocolHandler;
interface nsIChannel;
interface nsIURI;
interface nsIFile;
/**
* nsIIOService provides a set of network utility functions. This interface
* duplicates many of the nsIProtocolHandler methods in a protocol handler
* independent way (e.g., NewURI inspects the scheme in order to delegate
* creation of the new URI to the appropriate protocol handler). nsIIOService
* also provides a set of URL parsing utility functions. These are provided
* as a convenience to the programmer and in some cases to improve performance
* by eliminating intermediate data structures and interfaces.
*
* @status FROZEN
*/
[scriptable, uuid(bddeda3f-9020-4d12-8c70-984ee9f7935e)]
interface nsIIOService : nsISupports
{
/**
* Returns a protocol handler for a given URI scheme.
*
* @param aScheme the URI scheme
* @return reference to corresponding nsIProtocolHandler
*/
nsIProtocolHandler getProtocolHandler(in string aScheme);
/**
* Returns the protocol flags for a given scheme.
*
* @param aScheme the URI scheme
* @return value of corresponding nsIProtocolHandler::protocolFlags
*/
unsigned long getProtocolFlags(in string aScheme);
/**
* This method constructs a new URI by determining the scheme of the
* URI spec, and then delegating the construction of the URI to the
* protocol handler for that scheme. QueryInterface can be used on
* the resulting URI object to obtain a more specific type of URI.
*
* @see nsIProtocolHandler::newURI
*/
nsIURI newURI(in AUTF8String aSpec,
in string aOriginCharset,
in nsIURI aBaseURI);
/**
* This method constructs a new URI from a nsIFile.
*
* @param aFile specifies the file path
* @return reference to a new nsIURI object
*
* Note: in the future, for perf reasons we should allow
* callers to specify whether this is a file or directory by
* splitting this into newDirURI() and newActualFileURI().
*/
nsIURI newFileURI(in nsIFile aFile);
/**
* Creates a channel for a given URI.
*
* @param aURI nsIURI from which to make a channel
* @return reference to the new nsIChannel object
*/
nsIChannel newChannelFromURI(in nsIURI aURI);
/**
* Equivalent to newChannelFromURI(newURI(...))
*/
nsIChannel newChannel(in AUTF8String aSpec,
in string aOriginCharset,
in nsIURI aBaseURI);
/**
* Returns true if networking is in "offline" mode. When in offline mode,
* attempts to access the network will fail (although this does not
* necessarily correlate with whether there is actually a network
* available -- that's hard to detect without causing the dialer to
* come up).
*
* Changing this fires observer notifications ... see below.
*/
attribute boolean offline;
/**
* Checks if a port number is banned. This involves consulting a list of
* unsafe ports, corresponding to network services that may be easily
* exploitable. If the given port is considered unsafe, then the protocol
* handler (corresponding to aScheme) will be asked whether it wishes to
* override the IO service's decision to block the port. This gives the
* protocol handler ultimate control over its own security policy while
* ensuring reasonable, default protection.
*
* @see nsIProtocolHandler::allowPort
*/
boolean allowPort(in long aPort, in string aScheme);
/**
* Utility to extract the scheme from a URL string, consistently and
* according to spec (see RFC 2396).
*
* NOTE: Most URL parsing is done via nsIURI, and in fact the scheme
* can also be extracted from a URL string via nsIURI. This method
* is provided purely as an optimization.
*
* @param aSpec the URL string to parse
* @return URL scheme
*
* @throws NS_ERROR_MALFORMED_URI if URL string is not of the right form.
*/
ACString extractScheme(in AUTF8String urlString);
};
%{C++
/**
* We send notifications through nsIObserverService with topic
* NS_IOSERVICE_GOING_OFFLINE_TOPIC and data NS_IOSERVICE_OFFLINE
* when 'offline' has changed from false to true, and we are about
* to shut down network services such as DNS. When those
* services have been shut down, we send a notification with
* topic NS_IOSERVICE_OFFLINE_STATUS_TOPIC and data
* NS_IOSERVICE_OFFLINE.
*
* When 'offline' changes from true to false, then after
* network services have been restarted, we send a notification
* with topic NS_IOSERVICE_OFFLINE_STATUS_TOPIC and data
* NS_IOSERVICE_ONLINE.
*/
#define NS_IOSERVICE_GOING_OFFLINE_TOPIC "network:offline-about-to-go-offline"
#define NS_IOSERVICE_OFFLINE_STATUS_TOPIC "network:offline-status-changed"
#define NS_IOSERVICE_OFFLINE "offline"
#define NS_IOSERVICE_ONLINE "online"
%}