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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ft=cpp tw=78 sw=2 et ts=8 : */
/* 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 nsIURI;
interface nsILoadInfo;
/**
* Interface for content policy mechanism. Implementations of this
* interface can be used to control loading of various types of out-of-line
* content, or processing of certain types of in-line content.
*
* WARNING: do not block the caller from shouldLoad or shouldProcess (e.g.,
* by launching a dialog to prompt the user for something).
*/
[scriptable, uuid(caad4f1f-d047-46ac-ae9d-dc598e4fb91b)]
interface nsIContentPolicy : nsISupports
{
/**
* The type of nsIContentPolicy::TYPE_*
*/
cenum nsContentPolicyType : 8 {
/**
* Indicates a unset or bogus policy type.
*/
TYPE_INVALID = 0,
/**
* Gecko/Firefox developers: Avoid using TYPE_OTHER. Especially for
* requests that are coming from webpages. Or requests in general which
* you expect that security checks will be done on.
* Always use a more specific type if one is available. And do not hesitate
* to add more types as appropriate.
* But if you are fairly sure that no one would care about your more specific
* type, then it's ok to use TYPE_OTHER.
*
* Extension developers: Whenever it is reasonable, use one of the existing
* content types. If none of the existing content types are right for
* something you are doing, file a bug in the Core/DOM component that
* includes a patch that adds your new content type to the end of the list of
* TYPE_* constants here. But, don't start using your new content type until
* your patch has been accepted, because it will be uncertain what exact
* value and name your new content type will have; in that interim period,
* use TYPE_OTHER. In your patch, document your new content type in the style
* of the existing ones. In the bug you file, provide a more detailed
* description of the new type of content you want Gecko to support, so that
* the existing implementations of nsIContentPolicy can be properly modified
* to deal with that new type of content.
*
* Implementations of nsIContentPolicy should treat this the same way they
* treat unknown types, because existing users of TYPE_OTHER may be converted
* to use new content types.
*
* Note that the TYPE_INTERNAL_* constants are never passed to content
* policy implementations. They are mapped to other TYPE_* constants, and
* are only intended for internal usage inside Gecko.
*/
TYPE_OTHER = 1,
/**
* Indicates an executable script (such as JavaScript).
*/
TYPE_SCRIPT = 2,
/**
* Indicates an image (e.g., IMG elements).
*/
TYPE_IMAGE = 3,
/**
* Indicates a stylesheet (e.g., STYLE elements).
*/
TYPE_STYLESHEET = 4,
/**
* Indicates a generic object (plugin-handled content typically falls under
* this category).
*/
TYPE_OBJECT = 5,
/**
* Indicates a document at the top-level (i.e., in a browser).
*/
TYPE_DOCUMENT = 6,
/**
* Indicates a document contained within another document (e.g., IFRAMEs,
* FRAMES, and OBJECTs).
*/
TYPE_SUBDOCUMENT = 7,
/*
* XXX: nsContentPolicyType = 8 used to inicate a timed refresh request.
*/
/*
* XXX: nsContentPolicyType = 9 used to inicate an XBL binding request.
*/
/**
* Indicates a ping triggered by a click on <A PING="..."> element.
*/
TYPE_PING = 10,
/**
* Indicates an XMLHttpRequest. Also used for document.load and for EventSource.
*/
TYPE_XMLHTTPREQUEST = 11,
/**
* Indicates a request by a plugin.
*/
TYPE_OBJECT_SUBREQUEST = 12,
/**
* Indicates a DTD loaded by an XML document.
*/
TYPE_DTD = 13,
/**
* Indicates a font loaded via @font-face rule.
*/
TYPE_FONT = 14,
/**
* Indicates a video or audio load.
*/
TYPE_MEDIA = 15,
/**
* Indicates a WebSocket load.
*/
TYPE_WEBSOCKET = 16,
/**
* Indicates a Content Security Policy report.
*/
TYPE_CSP_REPORT = 17,
/**
* Indicates a style sheet transformation.
*/
TYPE_XSLT = 18,
/**
* Indicates a beacon post.
*/
TYPE_BEACON = 19,
/**
* Indicates a load initiated by the fetch() function from the Fetch
* specification.
*/
TYPE_FETCH = 20,
/**
* Indicates a <img srcset> or <picture> request.
*/
TYPE_IMAGESET = 21,
/**
* Indicates a web manifest.
*/
TYPE_WEB_MANIFEST = 22,
/**
* Indicates an internal constant for scripts loaded through script
* elements.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_SCRIPT = 23,
/**
* Indicates an internal constant for scripts loaded through a dedicated
* worker.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_WORKER = 24,
/**
* Indicates an internal constant for scripts loaded through a shared
* worker.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_SHARED_WORKER = 25,
/**
* Indicates an internal constant for content loaded from embed elements.
*
* This will be mapped to TYPE_OBJECT.
*/
TYPE_INTERNAL_EMBED = 26,
/**
* Indicates an internal constant for content loaded from object elements.
*
* This will be mapped to TYPE_OBJECT.
*/
TYPE_INTERNAL_OBJECT = 27,
/**
* Indicates an internal constant for content loaded from frame elements.
*
* This will be mapped to TYPE_SUBDOCUMENT.
*/
TYPE_INTERNAL_FRAME = 28,
/**
* Indicates an internal constant for content loaded from iframe elements.
*
* This will be mapped to TYPE_SUBDOCUMENT.
*/
TYPE_INTERNAL_IFRAME = 29,
/**
* Indicates an internal constant for content loaded from audio elements.
*
* This will be mapped to TYPE_MEDIA.
*/
TYPE_INTERNAL_AUDIO = 30,
/**
* Indicates an internal constant for content loaded from video elements.
*
* This will be mapped to TYPE_MEDIA.
*/
TYPE_INTERNAL_VIDEO = 31,
/**
* Indicates an internal constant for content loaded from track elements.
*
* This will be mapped to TYPE_MEDIA.
*/
TYPE_INTERNAL_TRACK = 32,
/**
* Indicates an internal constant for an XMLHttpRequest.
*
* This will be mapped to TYPE_XMLHTTPREQUEST.
*/
TYPE_INTERNAL_XMLHTTPREQUEST = 33,
/**
* Indicates an internal constant for EventSource.
*
* This will be mapped to TYPE_XMLHTTPREQUEST.
*/
TYPE_INTERNAL_EVENTSOURCE = 34,
/**
* Indicates an internal constant for scripts loaded through a service
* worker.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_SERVICE_WORKER = 35,
/**
* Indicates an internal constant for *preloaded* scripts
* loaded through script elements.
*
* This will be mapped to TYPE_SCRIPT before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_SCRIPT_PRELOAD = 36,
/**
* Indicates an internal constant for normal images.
*
* This will be mapped to TYPE_IMAGE before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_IMAGE = 37,
/**
* Indicates an internal constant for *preloaded* images.
*
* This will be mapped to TYPE_IMAGE before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_IMAGE_PRELOAD = 38,
/**
* Indicates an internal constant for normal stylesheets.
*
* This will be mapped to TYPE_STYLESHEET before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_STYLESHEET = 39,
/**
* Indicates an internal constant for *preloaded* stylesheets.
*
* This will be mapped to TYPE_STYLESHEET before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_STYLESHEET_PRELOAD = 40,
/**
* Indicates an internal constant for favicon.
*
* This will be mapped to TYPE_IMAGE before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_IMAGE_FAVICON = 41,
/**
* Indicates an importScripts() inside a worker script.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_WORKER_IMPORT_SCRIPTS = 42,
/**
* Indicates an save-as link download from the front-end code.
*/
TYPE_SAVEAS_DOWNLOAD = 43,
/**
* Indicates a speculative connection.
*/
TYPE_SPECULATIVE = 44,
/**
* Indicates an internal constant for ES6 module scripts
* loaded through script elements or an import statement.
*
* This will be mapped to TYPE_SCRIPT before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_MODULE = 45,
/**
* Indicates an internal constant for *preloaded* ES6 module scripts
* loaded through script elements or an import statement.
*
* This will be mapped to TYPE_SCRIPT before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_MODULE_PRELOAD = 46,
/**
* Indicates a DTD loaded by an XML document the URI of which could
* not be mapped to a known local DTD.
*/
TYPE_INTERNAL_DTD = 47,
/**
* Indicates a TYPE_INTERNAL_DTD which will not be blocked no matter
* what principal is being loaded from.
*/
TYPE_INTERNAL_FORCE_ALLOWED_DTD = 48,
/**
* Indicates an internal constant for scripts loaded through an
* audioWorklet.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_AUDIOWORKLET = 49,
/**
* Indicates an internal constant for scripts loaded through an
* paintWorklet.
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_PAINTWORKLET = 50,
/**
* Same as TYPE_FONT but indicates this is a <link rel=preload as=font>
* preload initiated load.
*/
TYPE_INTERNAL_FONT_PRELOAD = 51,
/**
* Indicates the load of a (Firefox-internal) script through ChromeUtils
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_CHROMEUTILS_COMPILED_SCRIPT = 52,
/**
* Indicates the load of a script through FrameMessageManager
*
* This will be mapped to TYPE_SCRIPT before being passed to content policy
* implementations.
*/
TYPE_INTERNAL_FRAME_MESSAGEMANAGER_SCRIPT = 53,
/**
* Indicates an internal constant for *preloaded* fetch
* loaded through link elements.
*
* This will be mapped to TYPE_FETCH before being passed
* to content policy implementations.
*/
TYPE_INTERNAL_FETCH_PRELOAD = 54,
/**
* Indicates a font loaded via @font-face rule in an UA style sheet.
* (CSP does not apply.)
*/
TYPE_UA_FONT = 55,
/**
* Indicates the establishment of a TCP or TLS connection via an
* http/https proxy that will be used for webrtc media. When no web proxy
* is involved, webrtc uses lower level sockets that are not subject to
* any sort of content policy.
*/
TYPE_PROXIED_WEBRTC_MEDIA = 56,
/* When adding new content types, please update
* NS_CP_ContentTypeName, nsCSPContext, CSP_ContentTypeToDirective,
* DoContentSecurityChecks, all nsIContentPolicy implementations, the
* static_assert in dom/cache/DBSchema.cpp, ChannelWrapper.webidl,
* ChannelWrapper.cpp, PermissionManager.cpp,
* IPCMessageUtilsSpecializations.h, and other things that are not
* listed here that are related to nsIContentPolicy. */
};
//////////////////////////////////////////////////////////////////////
/**
* Returned from shouldLoad or shouldProcess if the load or process request
* is rejected based on details of the request.
*/
const short REJECT_REQUEST = -1;
/**
* Returned from shouldLoad or shouldProcess if the load/process is rejected
* based solely on its type (of the above flags).
*
* NOTE that it is not meant to stop future requests for this type--only the
* current request.
*/
const short REJECT_TYPE = -2;
/**
* Returned from shouldLoad or shouldProcess if the load/process is rejected
* based on the server it is hosted on or requested from (aContentLocation or
* aRequestOrigin), e.g., if you block an IMAGE because it is served from
* goatse.cx (even if you don't necessarily block other types from that
* server/domain).
*
* NOTE that it is not meant to stop future requests for this server--only the
* current request.
*/
const short REJECT_SERVER = -3;
/**
* Returned from shouldLoad or shouldProcess if the load/process is rejected
* based on some other criteria. Mozilla callers will handle this like
* REJECT_REQUEST; third-party implementors may, for example, use this to
* direct their own callers to consult the extra parameter for additional
* details.
*/
const short REJECT_OTHER = -4;
/**
* Returned from shouldLoad or shouldProcess if the load/process is forbiddden
* based on enterprise policy.
*/
const short REJECT_POLICY = -5;
/**
* Returned from shouldLoad or shouldProcess if the load or process request
* is not rejected.
*/
const short ACCEPT = 1;
/**
* Should the resource at this location be loaded?
* ShouldLoad will be called before loading the resource at aContentLocation
* to determine whether to start the load at all.
*
* @param aContentLocation the location of the content being checked; must
* not be null
*
* @param aLoadInfo the loadinfo of the channel being evaluated.
*
* @param aMimeTypeGuess OPTIONAL. a guess for the requested content's
* MIME type, based on information available to
* the request initiator (e.g., an OBJECT's type
* attribute); does not reliably reflect the
* actual MIME type of the requested content
*
* @return ACCEPT or REJECT_*
*
* @note shouldLoad can be called while the DOM and layout of the document
* involved is in an inconsistent state. This means that implementors of
* this method MUST NOT do any of the following:
* 1) Modify the DOM in any way (e.g. setting attributes is a no-no).
* 2) Query any DOM properties that depend on layout (e.g. offset*
* properties).
* 3) Query any DOM properties that depend on style (e.g. computed style).
* 4) Query any DOM properties that depend on the current state of the DOM
* outside the "context" node (e.g. lengths of node lists).
* 5) [JavaScript implementations only] Access properties of any sort on any
* object without using XPCNativeWrapper (either explicitly or
* implicitly). Due to various DOM0 things, this leads to item 4.
* If you do any of these things in your shouldLoad implementation, expect
* unpredictable behavior, possibly including crashes, content not showing
* up, content showing up doubled, etc. If you need to do any of the things
* above, do them off timeout or event.
*/
short shouldLoad(in nsIURI aContentLocation,
in nsILoadInfo aLoadInfo,
in ACString aMimeTypeGuess);
/**
* Should the resource be processed?
* ShouldProcess will be called once all the information passed to it has
* been determined about the resource, typically after part of the resource
* has been loaded.
*
* @param aContentLocation OPTIONAL; the location of the resource being
* requested: MAY be, e.g., a post-redirection URI
* for the resource.
*
* @param aLoadInfo the loadinfo of the channel being evaluated.
*
* @param aMimeType the MIME type of the requested resource (e.g.,
* image/png), as reported by the networking library,
* if available (may be empty if inappropriate for
* the type).
*
* @return ACCEPT or REJECT_*
*
* @note shouldProcess can be called while the DOM and layout of the document
* involved is in an inconsistent state. See the note on shouldLoad to see
* what this means for implementors of this method.
*/
short shouldProcess(in nsIURI aContentLocation,
in nsILoadInfo aLoadInfo,
in ACString aMimeType);
};
typedef nsIContentPolicy_nsContentPolicyType nsContentPolicyType;
%{C++
enum class ExtContentPolicyType : uint8_t {
/**
* The type of ExtContentPolicy::TYPE_*
*/
TYPE_INVALID = nsIContentPolicy::TYPE_INVALID,
TYPE_OTHER = nsIContentPolicy::TYPE_OTHER,
TYPE_SCRIPT = nsIContentPolicy::TYPE_SCRIPT,
TYPE_IMAGE = nsIContentPolicy::TYPE_IMAGE,
TYPE_STYLESHEET = nsIContentPolicy::TYPE_STYLESHEET,
TYPE_OBJECT = nsIContentPolicy::TYPE_OBJECT,
TYPE_DOCUMENT = nsIContentPolicy::TYPE_DOCUMENT,
TYPE_SUBDOCUMENT = nsIContentPolicy::TYPE_SUBDOCUMENT,
TYPE_PING = nsIContentPolicy::TYPE_PING,
TYPE_XMLHTTPREQUEST = nsIContentPolicy::TYPE_XMLHTTPREQUEST,
TYPE_OBJECT_SUBREQUEST = nsIContentPolicy::TYPE_OBJECT_SUBREQUEST,
TYPE_DTD = nsIContentPolicy::TYPE_DTD,
TYPE_FONT = nsIContentPolicy::TYPE_FONT,
TYPE_MEDIA = nsIContentPolicy::TYPE_MEDIA,
TYPE_WEBSOCKET = nsIContentPolicy::TYPE_WEBSOCKET,
TYPE_CSP_REPORT = nsIContentPolicy::TYPE_CSP_REPORT,
TYPE_XSLT = nsIContentPolicy::TYPE_XSLT,
TYPE_BEACON = nsIContentPolicy::TYPE_BEACON,
TYPE_FETCH = nsIContentPolicy::TYPE_FETCH,
TYPE_IMAGESET = nsIContentPolicy::TYPE_IMAGESET,
TYPE_WEB_MANIFEST = nsIContentPolicy::TYPE_WEB_MANIFEST,
TYPE_SAVEAS_DOWNLOAD = nsIContentPolicy::TYPE_SAVEAS_DOWNLOAD,
TYPE_SPECULATIVE = nsIContentPolicy::TYPE_SPECULATIVE,
TYPE_UA_FONT = nsIContentPolicy::TYPE_UA_FONT,
TYPE_PROXIED_WEBRTC_MEDIA = nsIContentPolicy::TYPE_PROXIED_WEBRTC_MEDIA,
};
typedef ExtContentPolicyType ExtContentPolicy;
%}