pjs/netwerk/base/public/nsIProtocolHandler.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
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*
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* 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
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* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
interface nsIURI;
interface nsIChannel;
/**
* nsIProtocolHandler
*
* @status FROZEN
*/
[scriptable, uuid(15fd6940-8ea7-11d3-93ad-00104ba0fd40)]
interface nsIProtocolHandler : nsISupports
{
/**
* The scheme of this protocol (e.g., "file").
*/
readonly attribute ACString scheme;
/**
* The default port is the port that this protocol normally uses.
* If a port does not make sense for the protocol (e.g., "about:")
* then -1 will be returned.
*/
readonly attribute long defaultPort;
/**
* Returns the protocol specific flags (see flag definitions below).
*/
readonly attribute unsigned long protocolFlags;
/**
* Makes a URI object that is suitable for loading by this protocol,
* where the URI string is given as an UTF-8 string. The caller may
* provide the charset from which the URI string originated, so that
* the URI string can be translated back to that charset (if necessary)
* before communicating with, for example, the origin server of the URI
* string. (Many servers do not support UTF-8 IRIs at the present time,
* so we must be careful about tracking the native charset of the origin
* server.)
*
* @param aSpec - the URI string in UTF-8 encoding. depending
* on the protocol implementation, unicode character
* sequences may or may not be %xx escaped.
* @param aOriginCharset - the charset of the document from which this URI
* string originated. this corresponds to the
* charset that should be used when communicating
* this URI to an origin server, for example. if
* null, then UTF-8 encoding is assumed (i.e.,
* no charset transformation from aSpec).
* @param aBaseURI - if null, aSpec must specify an absolute URI.
* otherwise, aSpec may be resolved relative
* to aBaseURI, depending on the protocol.
* If the protocol has no concept of relative
* URI aBaseURI will simply be ignored.
*/
nsIURI newURI(in AUTF8String aSpec,
in string aOriginCharset,
in nsIURI aBaseURI);
/**
* Constructs a new channel from the given URI for this protocol handler.
*/
nsIChannel newChannel(in nsIURI aURI);
/**
* Allows a protocol to override blacklisted ports.
*
* This method will be called when there is an attempt to connect to a port
* that is blacklisted. For example, for most protocols, port 25 (Simple Mail
* Transfer) is banned. When a URI containing this "known-to-do-bad-things"
* port number is encountered, this function will be called to ask if the
* protocol handler wants to override the ban.
*/
boolean allowPort(in long port, in string scheme);
/**************************************************************************
* Constants for the protocol flags (the first is the default mask, the
* others are deviations):
*
* NOTE: Implementation must ignore any flags they do not understand.
*/
/**
* standard full URI with authority component and concept of relative
* URIs (http, ftp, ...)
*/
const unsigned long URI_STD = 0;
/**
* no concept of relative URIs (about, javascript, finger, ...)
*/
const unsigned long URI_NORELATIVE = (1<<0);
/**
* no authority component (file, ...)
*/
const unsigned long URI_NOAUTH = (1<<1);
/**
* The URIs for this protocol have no inherent security context, so
* documents loaded via this protocol should inherit the security context
* from the document that loads them.
*/
const unsigned long URI_INHERITS_SECURITY_CONTEXT = (1<<4);
/**
* "Automatic" loads that would replace the document (e.g. <meta> refresh,
* certain types of XLinks, possibly other loads that the application
* decides are not user triggered) are not allowed if the originating (NOT
* the target) URI has this protocol flag. Note that the decision as to
* what constitutes an "automatic" load is made externally, by the caller
* of nsIScriptSecurityManager::CheckLoadURI. See documentation for that
* method for more information.
*
* A typical protocol that might want to set this flag is a protocol that
* shows highly untrusted content in a viewing area that the user expects
* to have a lot of control over, such as an e-mail reader.
*/
const unsigned long URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT = (1<<5);
/**
* +-------------------------------------------------------------------+
* | |
* | ALL PROTOCOL HANDLERS MUST SET ONE OF THE FOLLOWING FOUR FLAGS. |
* | |
* +-------------------------------------------------------------------+
*
* These flags are used to determine who is allowed to load URIs for this
* protocol. Note that if a URI is nested, only the flags for the
* innermost URI matter. See nsINestedURI.
*
* If none of these four flags are set, the URI must be treated as if it
* had the URI_LOADABLE_BY_ANYONE flag set, for compatibility with protocol
* handlers written against Gecko 1.8 or earlier. In this case, there may
* be run-time warning messages indicating that a "default insecure"
* assumption is being made. At some point in the futures (Mozilla 2.0,
* most likely), these warnings will become errors.
*/
/**
* The URIs for this protocol can be loaded by anyone. For example, any
* website should be allowed to trigger a load of a URI for this protocol.
* Web-safe protocols like "http" should set this flag.
*/
const unsigned long URI_LOADABLE_BY_ANYONE = (1<<6);
/**
* The URIs for this protocol are UNSAFE if loaded by untrusted (web)
* content and may only be loaded by privileged code (for example, code
* which has the system principal). Various internal protocols should set
* this flag.
*/
const unsigned long URI_DANGEROUS_TO_LOAD = (1<<7);
/**
* The URIs for this protocol point to resources that are part of the
* application's user interface. There are cases when such resources may
* be made accessible to untrusted content such as web pages, so this is
* less restrictive than URI_DANGEROUS_TO_LOAD but more restrictive than
* URI_LOADABLE_BY_ANYONE. See the documentation for
* nsIScriptSecurityManager::CheckLoadURI.
*/
const unsigned long URI_IS_UI_RESOURCE = (1<<8);
/**
* Loading of URIs for this protocol from other origins should only be
* allowed if those origins should have access to the local filesystem.
* It's up to the application to decide what origins should have such
* access. Protocols like "file" that point to local data should set this
* flag.
*/
const unsigned long URI_IS_LOCAL_FILE = (1<<9);
/**
* Loading channels from this protocol has side-effects that make
* it unsuitable for saving to a local file.
*/
const unsigned long URI_NON_PERSISTABLE = (1<<10);
/**
* This protocol handler can be proxied via a proxy (socks or http)
* (e.g., irc, smtp, http, etc.). If the protocol supports transparent
* proxying, the handler should implement nsIProxiedProtocolHandler.
*
* If it supports only HTTP proxying, then it need not support
* nsIProxiedProtocolHandler, but should instead set the ALLOWS_PROXY_HTTP
* flag (see below).
*
* @see nsIProxiedProtocolHandler
*/
const unsigned long ALLOWS_PROXY = (1<<2);
/**
* This protocol handler can be proxied using a http proxy (e.g., http,
* ftp, etc.). nsIIOService::newChannelFromURI will feed URIs from this
* protocol handler to the HTTP protocol handler instead. This flag is
* ignored if ALLOWS_PROXY is not set.
*/
const unsigned long ALLOWS_PROXY_HTTP = (1<<3);
};
%{C++
/**
* Protocol handlers are registered with XPCOM under the following CONTRACTID prefix:
*/
#define NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "@mozilla.org/network/protocol;1?name="
/**
* For example, "@mozilla.org/network/protocol;1?name=http"
*/
%}