mirror of
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97 lines
4.0 KiB
Plaintext
97 lines
4.0 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Akkana Peck <akkana@netscape.com> (original author)
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* Darin Fisher <darin@meer.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIRequest.idl"
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interface nsIURI;
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interface nsIChannel;
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interface nsIRequestObserver;
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/**
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* nsIURIChecker
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*
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* The URI checker is a component that can be used to verify the existance
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* of a resource at the location specified by a given URI. It will use
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* protocol specific methods to verify the URI (e.g., use of HEAD request
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* for HTTP URIs).
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*/
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[scriptable, uuid(4660c1a1-be2d-4c78-9baf-c22984176c28)]
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interface nsIURIChecker : nsIRequest
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{
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/**
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* Initializes the URI checker. After this method is called, it is valid
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* to further configure the URI checker by calling its nsIRequest methods.
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* This method creates the channel that will be used to verify the URI.
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* In the case of the HTTP protocol, only a HEAD request will be issued.
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*
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* @param aURI
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* The URI to be checked.
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*/
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void init(in nsIURI aURI);
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/**
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* Returns the base channel that will be used to verify the URI.
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*/
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readonly attribute nsIChannel baseChannel;
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/**
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* Begin asynchronous checking URI for validity. Notification will be
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* asynchronous through the nsIRequestObserver callback interface. When
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* OnStartRequest is fired, the baseChannel attribute will have been
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* updated to reflect the final channel used (corresponding to any redirects
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* that may have been followed).
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*
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* Our interpretations of the nsIRequestObserver status codes:
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* NS_BINDING_SUCCEEDED: link is valid
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* NS_BINDING_FAILED: link is invalid (gave an error)
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* NS_BINDING_ABORTED: timed out, or cancelled
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*
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* @param aObserver
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* The object to notify when the link is verified. We will
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* call aObserver.OnStartRequest followed immediately by
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* aObserver.OnStopRequest. It is recommended that the caller use
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* OnStopRequest to act on the link's status. The underlying request
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* will not be cancelled until after OnStopRequest has been called.
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* @param aContext
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* A closure that will be passed back to the nsIRequestObserver
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* methods.
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*/
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void asyncCheck(in nsIRequestObserver aObserver, in nsISupports aContext);
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};
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