gecko-dev/netwerk/base/nsIIOService.idl

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/* -*- Mode: C++; tab-width: 2; 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 "nsISupports.idl"
interface nsIProtocolHandler;
interface nsIChannel;
interface nsIURI;
interface nsIFile;
interface nsIDOMNode;
interface nsIPrincipal;
interface nsILoadInfo;
/**
* 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.
*/
[scriptable, uuid(4286de5a-b2ea-446f-8f70-e2a461f42694)]
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
* @param aLoadingNode
* The loadingDocument of the channel.
* The element or document where the result of this request will be
* used. This is the document/element that will get access to the
* result of this request. For example for an image load, it's the
* document in which the image will be loaded. And for a CSS
* stylesheet it's the document whose rendering will be affected by
* the stylesheet.
* If possible, pass in the element which is performing the load. But
* if the load is coming from a JS API (such as XMLHttpRequest) or if
* the load might be coalesced across multiple elements (such as
* for <img>) then pass in the Document node instead.
* For loads that are not related to any document, such as loads coming
* from addons or internal browser features, use null here.
* @param aLoadingPrincipal
* The loadingPrincipal of the channel.
* The principal of the document where the result of this request will
* be used.
* This defaults to the principal of aLoadingNode, so when aLoadingNode
* is passed this can be left as null. However for loads where
* aLoadingNode is null this argument must be passed.
* For example for loads from a WebWorker, pass the principal
* of that worker. For loads from an addon or from internal browser
* features, pass the system principal.
* This principal should almost always be the system principal if
* aLoadingNode is null. The only exception to this is for loads
* from WebWorkers since they don't have any nodes to be passed as
* aLoadingNode.
* Please note, aLoadingPrincipal is *not* the principal of the
* resource being loaded. But rather the principal of the context
* where the resource will be used.
* @param aTriggeringPrincipal
* The triggeringPrincipal of the load.
* The triggeringPrincipal is the principal of the resource that caused
* this particular URL to be loaded.
* Most likely the triggeringPrincipal and the loadingPrincipal are
* identical, in which case the triggeringPrincipal can be left out.
* In some cases the loadingPrincipal and the triggeringPrincipal are
* different however, e.g. a stylesheet may import a subresource. In
* that case the principal of the stylesheet which contains the
* import command is the triggeringPrincipal, and the principal of
* the document whose rendering is affected is the loadingPrincipal.
* @param aSecurityFlags
* The securityFlags of the channel.
* Any of the securityflags defined in nsILoadInfo.idl
* @param aContentPolicyType
* The contentPolicyType of the channel.
* Any of the content types defined in nsIContentPolicy.idl
* @return reference to the new nsIChannel object
*
* Please note, if you provide both a loadingNode and a loadingPrincipal,
* then loadingPrincipal must be equal to loadingNode->NodePrincipal().
* But less error prone is to just supply a loadingNode.
*
* Keep in mind that URIs coming from a webpage should *never* use the
* systemPrincipal as the loadingPrincipal.
*/
nsIChannel newChannelFromURI2(in nsIURI aURI,
in nsIDOMNode aLoadingNode,
in nsIPrincipal aLoadingPrincipal,
in nsIPrincipal aTriggeringPrincipal,
in unsigned long aSecurityFlags,
in unsigned long aContentPolicyType);
/**
* Equivalent to newChannelFromURI2(aURI, aLoadingNode, ...)
*/
nsIChannel newChannelFromURIWithLoadInfo(in nsIURI aURI,
in nsILoadInfo aLoadInfo);
/**
* Equivalent to newChannelFromURI2(newURI(...))
*/
nsIChannel newChannel2(in AUTF8String aSpec,
in string aOriginCharset,
in nsIURI aBaseURI,
in nsIDOMNode aLoadingNode,
in nsIPrincipal aLoadingPrincipal,
in nsIPrincipal aTriggeringPrincipal,
in unsigned long aSecurityFlags,
in unsigned long aContentPolicyType);
/**
* 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;
/**
* Returns false if there are no interfaces for a network request
*/
readonly attribute boolean connectivity;
/**
* Set whether network appears to be offline for network connections from
* a given appID.
*
* Calling this function may fire the "network:app-offline-status-changed"
* notification, which is also sent to child processes containing this appId.
* 'state' must one of nsIAppOfflineInfo::{ONLINE|OFFLINE|WIFI_ONLY}.
*/
void setAppOffline(in uint32_t appId, in long state);
/**
* Returns true if given appId is currently not allowed to make network
* connections. It will return true if the app is in the wifi-only state
* and we are currently on a 3G connection.
* The returned value does not depend on the offline state of the browser.
*/
boolean isAppOffline(in uint32_t appId);
/**
* Returns the state of the app with the given appId.
* returns nsIAppOfflineInfo::{ONLINE,OFFLINE,WIFI_ONLY}
*/
long getAppOfflineState(in uint32_t appId);
/**
* 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);
};
[scriptable, uuid(4ac296a0-ca1b-44f4-8787-117a88cb70fb)]
interface nsIAppOfflineInfo : nsISupports
{
readonly attribute unsigned long appId;
const long ONLINE = 1;
const long OFFLINE = 2;
const long WIFI_ONLY = 3;
readonly attribute long mode;
};
%{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"
/**
* When network:app-offline-status-changed is fired,
* the 'Subject' argument is a nsIOfflineAppInfo.
*/
#define NS_IOSERVICE_APP_OFFLINE_STATUS_TOPIC "network:app-offline-status-changed"
%}
[builtinclass, uuid(6633c0bf-d97a-428f-8ece-cb6a655fb95a)]
interface nsIIOServiceInternal : nsISupports
{
/**
* This is an internal method that should only be called from ContentChild
* in order to pass the connectivity state from the chrome process to the
* content process. It throws if called outside the content process.
*/
void SetConnectivity(in boolean connectivity);
/**
* An internal method to asynchronously run our notifications that happen
* when we wake from sleep
*/
void NotifyWakeup();
};