зеркало из https://github.com/mozilla/gecko-dev.git
508 строки
18 KiB
C++
508 строки
18 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ft=cpp tw=78 sw=2 et ts=8 : */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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interface nsIURI;
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interface nsIDOMNode;
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interface nsIPrincipal;
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/**
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* The type of nsIContentPolicy::TYPE_*
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*/
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typedef unsigned long nsContentPolicyType;
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/**
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* Interface for content policy mechanism. Implementations of this
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* interface can be used to control loading of various types of out-of-line
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* content, or processing of certain types of in-line content.
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*
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* WARNING: do not block the caller from shouldLoad or shouldProcess (e.g.,
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* by launching a dialog to prompt the user for something).
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*/
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[scriptable,uuid(caad4f1f-d047-46ac-ae9d-dc598e4fb91b)]
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interface nsIContentPolicy : nsISupports
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{
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/**
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* Indicates a unset or bogus policy type.
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*/
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const nsContentPolicyType TYPE_INVALID = 0;
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/**
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* Gecko/Firefox developers: Avoid using TYPE_OTHER. Especially for
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* requests that are coming from webpages. Or requests in general which
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* you expect that security checks will be done on.
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* Always use a more specific type if one is available. And do not hesitate
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* to add more types as appropriate.
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* But if you are fairly sure that no one would care about your more specific
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* type, then it's ok to use TYPE_OTHER.
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*
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* Extension developers: Whenever it is reasonable, use one of the existing
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* content types. If none of the existing content types are right for
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* something you are doing, file a bug in the Core/DOM component that
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* includes a patch that adds your new content type to the end of the list of
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* TYPE_* constants here. But, don't start using your new content type until
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* your patch has been accepted, because it will be uncertain what exact
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* value and name your new content type will have; in that interim period,
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* use TYPE_OTHER. In your patch, document your new content type in the style
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* of the existing ones. In the bug you file, provide a more detailed
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* description of the new type of content you want Gecko to support, so that
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* the existing implementations of nsIContentPolicy can be properly modified
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* to deal with that new type of content.
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*
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* Implementations of nsIContentPolicy should treat this the same way they
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* treat unknown types, because existing users of TYPE_OTHER may be converted
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* to use new content types.
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*
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* Note that the TYPE_INTERNAL_* constants are never passed to content
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* policy implementations. They are mapped to other TYPE_* constants, and
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* are only intended for internal usage inside Gecko.
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*/
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const nsContentPolicyType TYPE_OTHER = 1;
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/**
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* Indicates an executable script (such as JavaScript).
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*/
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const nsContentPolicyType TYPE_SCRIPT = 2;
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/**
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* Indicates an image (e.g., IMG elements).
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*/
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const nsContentPolicyType TYPE_IMAGE = 3;
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/**
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* Indicates a stylesheet (e.g., STYLE elements).
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*/
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const nsContentPolicyType TYPE_STYLESHEET = 4;
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/**
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* Indicates a generic object (plugin-handled content typically falls under
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* this category).
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*/
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const nsContentPolicyType TYPE_OBJECT = 5;
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/**
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* Indicates a document at the top-level (i.e., in a browser).
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*/
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const nsContentPolicyType TYPE_DOCUMENT = 6;
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/**
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* Indicates a document contained within another document (e.g., IFRAMEs,
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* FRAMES, and OBJECTs).
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*/
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const nsContentPolicyType TYPE_SUBDOCUMENT = 7;
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/**
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* Indicates a timed refresh.
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*
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* shouldLoad will never get this, because it does not represent content
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* to be loaded (the actual load triggered by the refresh will go through
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* shouldLoad as expected).
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*
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* shouldProcess will get this for, e.g., META Refresh elements and HTTP
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* Refresh headers.
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*/
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const nsContentPolicyType TYPE_REFRESH = 8;
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/**
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* Indicates an XBL binding request, triggered either by -moz-binding CSS
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* property.
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*/
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const nsContentPolicyType TYPE_XBL = 9;
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/**
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* Indicates a ping triggered by a click on <A PING="..."> element.
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*/
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const nsContentPolicyType TYPE_PING = 10;
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/**
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* Indicates an XMLHttpRequest. Also used for document.load and for EventSource.
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*/
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const nsContentPolicyType TYPE_XMLHTTPREQUEST = 11;
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const nsContentPolicyType TYPE_DATAREQUEST = 11; // alias
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/**
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* Indicates a request by a plugin.
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*/
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const nsContentPolicyType TYPE_OBJECT_SUBREQUEST = 12;
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/**
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* Indicates a DTD loaded by an XML document.
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*/
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const nsContentPolicyType TYPE_DTD = 13;
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/**
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* Indicates a font loaded via @font-face rule.
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*/
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const nsContentPolicyType TYPE_FONT = 14;
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/**
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* Indicates a video or audio load.
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*/
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const nsContentPolicyType TYPE_MEDIA = 15;
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/**
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* Indicates a WebSocket load.
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*/
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const nsContentPolicyType TYPE_WEBSOCKET = 16;
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/**
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* Indicates a Content Security Policy report.
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*/
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const nsContentPolicyType TYPE_CSP_REPORT = 17;
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/**
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* Indicates a style sheet transformation.
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*/
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const nsContentPolicyType TYPE_XSLT = 18;
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/**
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* Indicates a beacon post.
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*/
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const nsContentPolicyType TYPE_BEACON = 19;
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/**
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* Indicates a load initiated by the fetch() function from the Fetch
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* specification.
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*/
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const nsContentPolicyType TYPE_FETCH = 20;
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/**
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* Indicates a <img srcset> or <picture> request.
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*/
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const nsContentPolicyType TYPE_IMAGESET = 21;
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/**
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* Indicates a web manifest.
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*/
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const nsContentPolicyType TYPE_WEB_MANIFEST = 22;
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/**
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* Indicates an save-as link download from the front-end code.
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*/
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const nsContentPolicyType TYPE_SAVEAS_DOWNLOAD = 43;
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/**
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* Indicates an internal constant for scripts loaded through script
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* elements.
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*
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* This will be mapped to TYPE_SCRIPT before being passed to content policy
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* implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_SCRIPT = 23;
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/**
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* Indicates an internal constant for scripts loaded through a dedicated
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* worker.
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*
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* This will be mapped to TYPE_SCRIPT before being passed to content policy
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* implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_WORKER = 24;
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/**
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* Indicates an internal constant for scripts loaded through a shared
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* worker.
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*
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* This will be mapped to TYPE_SCRIPT before being passed to content policy
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* implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_SHARED_WORKER = 25;
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/**
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* Indicates an internal constant for content loaded from embed elements.
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*
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* This will be mapped to TYPE_OBJECT.
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*/
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const nsContentPolicyType TYPE_INTERNAL_EMBED = 26;
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/**
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* Indicates an internal constant for content loaded from object elements.
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*
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* This will be mapped to TYPE_OBJECT.
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*/
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const nsContentPolicyType TYPE_INTERNAL_OBJECT = 27;
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/**
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* Indicates an internal constant for content loaded from frame elements.
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*
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* This will be mapped to TYPE_SUBDOCUMENT.
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*/
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const nsContentPolicyType TYPE_INTERNAL_FRAME = 28;
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/**
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* Indicates an internal constant for content loaded from iframe elements.
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*
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* This will be mapped to TYPE_SUBDOCUMENT.
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*/
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const nsContentPolicyType TYPE_INTERNAL_IFRAME = 29;
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/**
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* Indicates an internal constant for content loaded from audio elements.
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*
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* This will be mapped to TYPE_MEDIA.
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*/
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const nsContentPolicyType TYPE_INTERNAL_AUDIO = 30;
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/**
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* Indicates an internal constant for content loaded from video elements.
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*
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* This will be mapped to TYPE_MEDIA.
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*/
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const nsContentPolicyType TYPE_INTERNAL_VIDEO = 31;
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/**
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* Indicates an internal constant for content loaded from track elements.
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*
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* This will be mapped to TYPE_MEDIA.
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*/
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const nsContentPolicyType TYPE_INTERNAL_TRACK = 32;
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/**
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* Indicates an internal constant for an XMLHttpRequest.
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*
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* This will be mapped to TYPE_XMLHTTPREQUEST.
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*/
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const nsContentPolicyType TYPE_INTERNAL_XMLHTTPREQUEST = 33;
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/**
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* Indicates an internal constant for EventSource.
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*
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* This will be mapped to TYPE_DATAREQUEST.
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*/
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const nsContentPolicyType TYPE_INTERNAL_EVENTSOURCE = 34;
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/**
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* Indicates an internal constant for scripts loaded through a service
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* worker.
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*
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* This will be mapped to TYPE_SCRIPT before being passed to content policy
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* implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_SERVICE_WORKER = 35;
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/**
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* Indicates an internal constant for *preloaded* scripts
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* loaded through script elements.
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*
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* This will be mapped to TYPE_SCRIPT before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_SCRIPT_PRELOAD = 36;
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/**
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* Indicates an internal constant for normal images.
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*
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* This will be mapped to TYPE_IMAGE before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_IMAGE = 37;
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/**
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* Indicates an internal constant for *preloaded* images.
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*
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* This will be mapped to TYPE_IMAGE before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_IMAGE_PRELOAD = 38;
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/**
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* Indicates an internal constant for normal stylesheets.
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*
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* This will be mapped to TYPE_STYLESHEET before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_STYLESHEET = 39;
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/**
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* Indicates an internal constant for *preloaded* stylesheets.
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*
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* This will be mapped to TYPE_STYLESHEET before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_STYLESHEET_PRELOAD = 40;
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/**
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* Indicates an internal constant for favicon.
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*
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* This will be mapped to TYPE_IMAGE before being passed
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* to content policy implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_IMAGE_FAVICON = 41;
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/**
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* Indicates an importScripts() inside a worker script.
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*
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* This will be mapped to TYPE_SCRIPT before being passed to content policy
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* implementations.
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*/
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const nsContentPolicyType TYPE_INTERNAL_WORKER_IMPORT_SCRIPTS = 42;
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/* When adding new content types, please update nsContentBlocker,
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* NS_CP_ContentTypeName, nsCSPContext, all nsIContentPolicy
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* implementations, the static_assert in dom/cache/DBSchema.cpp,
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* ChannelWrapper.webidl, ChannelWrapper.cpp, and other things that
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* are not listed here that are related to nsIContentPolicy. */
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//////////////////////////////////////////////////////////////////////
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/**
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* Returned from shouldLoad or shouldProcess if the load or process request
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* is rejected based on details of the request.
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*/
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const short REJECT_REQUEST = -1;
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/**
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* Returned from shouldLoad or shouldProcess if the load/process is rejected
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* based solely on its type (of the above flags).
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*
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* NOTE that it is not meant to stop future requests for this type--only the
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* current request.
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*/
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const short REJECT_TYPE = -2;
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/**
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* Returned from shouldLoad or shouldProcess if the load/process is rejected
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* based on the server it is hosted on or requested from (aContentLocation or
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* aRequestOrigin), e.g., if you block an IMAGE because it is served from
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* goatse.cx (even if you don't necessarily block other types from that
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* server/domain).
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*
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* NOTE that it is not meant to stop future requests for this server--only the
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* current request.
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*/
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const short REJECT_SERVER = -3;
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/**
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* Returned from shouldLoad or shouldProcess if the load/process is rejected
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* based on some other criteria. Mozilla callers will handle this like
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* REJECT_REQUEST; third-party implementors may, for example, use this to
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* direct their own callers to consult the extra parameter for additional
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* details.
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*/
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const short REJECT_OTHER = -4;
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/**
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* Returned from shouldLoad or shouldProcess if the load or process request
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* is not rejected.
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*/
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const short ACCEPT = 1;
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/**
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* Should the resource at this location be loaded?
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* ShouldLoad will be called before loading the resource at aContentLocation
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* to determine whether to start the load at all.
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*
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* @param aContentType the type of content being tested. This will be one
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* one of the TYPE_* constants.
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*
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* @param aContentLocation the location of the content being checked; must
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* not be null
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*
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* @param aRequestOrigin OPTIONAL. the location of the resource that
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* that is loading the request. This will generally
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* be the URI of the loading principal for the
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* resulting request (as determined by its
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* LoadInfo), but may vary depending on the
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* caller. Can be null if inapplicable.
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*
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* @param aContext OPTIONAL. the nsIDOMNode or nsIDOMWindow that
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* initiated the request, or something that can QI
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* to one of those; can be null if inapplicable.
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* Note that for navigation events (new windows and
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* link clicks), this is the NEW window.
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*
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* @param aMimeTypeGuess OPTIONAL. a guess for the requested content's
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* MIME type, based on information available to
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* the request initiator (e.g., an OBJECT's type
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* attribute); does not reliably reflect the
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* actual MIME type of the requested content
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*
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* @param aExtra an OPTIONAL argument, pass-through for non-Gecko
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* callers to pass extra data to callees.
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*
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* @param aRequestPrincipal an OPTIONAL argument, defines the principal that
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* caused the load. This is optional only for
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* non-gecko code: all gecko code should set this
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* argument. This should generally be the same as
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* the triggering principal for the resulting
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* request (as determined by its LoadInfo), but may
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* vary depending on the caller. Sometimes it will
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* be the loading principal or final channel
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* principal instead.
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*
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* @return ACCEPT or REJECT_*
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*
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* @note shouldLoad can be called while the DOM and layout of the document
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* involved is in an inconsistent state. This means that implementors of
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* this method MUST NOT do any of the following:
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* 1) Modify the DOM in any way (e.g. setting attributes is a no-no).
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* 2) Query any DOM properties that depend on layout (e.g. offset*
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* properties).
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* 3) Query any DOM properties that depend on style (e.g. computed style).
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* 4) Query any DOM properties that depend on the current state of the DOM
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* outside the "context" node (e.g. lengths of node lists).
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* 5) [JavaScript implementations only] Access properties of any sort on any
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* object without using XPCNativeWrapper (either explicitly or
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* implicitly). Due to various DOM0 things, this leads to item 4.
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* If you do any of these things in your shouldLoad implementation, expect
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* unpredictable behavior, possibly including crashes, content not showing
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* up, content showing up doubled, etc. If you need to do any of the things
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* above, do them off timeout or event.
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*/
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short shouldLoad(in nsContentPolicyType aContentType,
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in nsIURI aContentLocation,
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in nsIURI aRequestOrigin,
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in nsISupports aContext,
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in ACString aMimeTypeGuess,
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in nsISupports aExtra,
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[optional] in nsIPrincipal aRequestPrincipal);
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/**
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* Should the resource be processed?
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* ShouldProcess will be called once all the information passed to it has
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* been determined about the resource, typically after part of the resource
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* has been loaded.
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*
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* @param aContentType the type of content being tested. This will be one
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* one of the TYPE_* constants.
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*
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* @param aContentLocation OPTIONAL; the location of the resource being
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* requested: MAY be, e.g., a post-redirection URI
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* for the resource.
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*
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* @param aRequestOrigin OPTIONAL. the location of the resource that
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* initiated this load request; can be null if
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* inapplicable
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*
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* @param aContext OPTIONAL. the nsIDOMNode or nsIDOMWindow that
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* initiated the request, or something that can QI
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* to one of those; can be null if inapplicable.
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*
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* @param aMimeType the MIME type of the requested resource (e.g.,
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* image/png), as reported by the networking library,
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* if available (may be empty if inappropriate for
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* the type, e.g., TYPE_REFRESH).
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*
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* @param aExtra an OPTIONAL argument, pass-through for non-Gecko
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* callers to pass extra data to callees.
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*
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* @return ACCEPT or REJECT_*
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*
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* @note shouldProcess can be called while the DOM and layout of the document
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* involved is in an inconsistent state. See the note on shouldLoad to see
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* what this means for implementors of this method.
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*/
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short shouldProcess(in nsContentPolicyType aContentType,
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in nsIURI aContentLocation,
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in nsIURI aRequestOrigin,
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in nsISupports aContext,
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in ACString aMimeType,
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in nsISupports aExtra,
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[optional] in nsIPrincipal aRequestPrincipal);
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};
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