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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef js_loader_ScriptFecthOptions_h
#define js_loader_ScriptFecthOptions_h
#include "mozilla/CORSMode.h"
#include "mozilla/dom/ReferrerPolicyBinding.h"
#include "mozilla/dom/RequestBinding.h" // RequestPriority
#include "nsCOMPtr.h"
#include "nsIPrincipal.h"
namespace JS::loader {
// https://fetch.spec.whatwg.org/#concept-request-parser-metadata
// All scripts are either "parser-inserted" or "not-parser-inserted", so
// the empty string is not necessary.
enum class ParserMetadata {
NotParserInserted,
ParserInserted,
};
/*
* ScriptFetchOptions loosely corresponds to HTML's "script fetch options",
* https://html.spec.whatwg.org/multipage/webappapis.html#script-fetch-options
* with the exception of the following properties:
* integrity metadata
* The integrity metadata used for the initial fetch. This is
* implemented in ScriptLoadRequest, as it changes for every
* ScriptLoadRequest.
*
* referrerPolicy
* For a module script, its referrerPolicy will be updated if there is a
* HTTP Response 'REFERRER-POLICY' header, given this value may be different
* for every ScriptLoadRequest, so we store it directly in
* ScriptLoadRequest.
*
* In the case of classic scripts without dynamic import, this object is
* used once. For modules, this object is propogated throughout the module
* tree. If there is a dynamically imported module in any type of script,
* the ScriptFetchOptions object will be propogated from its importer.
*/
class ScriptFetchOptions {
~ScriptFetchOptions();
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(ScriptFetchOptions)
NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(ScriptFetchOptions)
ScriptFetchOptions(mozilla::CORSMode aCORSMode, const nsAString& aNonce,
mozilla::dom::RequestPriority aFetchPriority,
const ParserMetadata aParserMetadata,
nsIPrincipal* aTriggeringPrincipal);
/*
* The credentials mode used for the initial fetch (for module scripts)
* and for fetching any imported modules (for both module scripts and
* classic scripts)
*/
const mozilla::CORSMode mCORSMode;
/*
* The cryptographic nonce metadata used for the initial fetch and for
* fetching any imported modules.
*/
const nsString mNonce;
/*
* <https://html.spec.whatwg.org/multipage/webappapis.html#script-fetch-options>.
*/
const mozilla::dom::RequestPriority mFetchPriority;
/*
* The parser metadata used for the initial fetch and for fetching any
* imported modules
*/
const ParserMetadata mParserMetadata;
/*
* Used to determine CSP and if we are on the About page.
* Only used in DOM content scripts.
* TODO: Move to ScriptLoadContext
*/
nsCOMPtr<nsIPrincipal> mTriggeringPrincipal;
// Returns true if given fetch option is compatible with this fetch option
// in term of sharing the server response.
inline bool IsCompatible(ScriptFetchOptions* other) {
if (this == other) {
return true;
}
if (mTriggeringPrincipal && other->mTriggeringPrincipal) {
bool equals;
(void)mTriggeringPrincipal->Equals(other->mTriggeringPrincipal, &equals);
if (!equals) {
return false;
}
} else if (mTriggeringPrincipal || other->mTriggeringPrincipal) {
return false;
}
// NOTE: mParserMetadata can be ignored.
return mCORSMode == other->mCORSMode && mNonce == other->mNonce &&
mFetchPriority == other->mFetchPriority;
}
};
} // namespace JS::loader
#endif // js_loader_ScriptFetchOptions_h
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