mirror of
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102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_dom_FetchUtil_h
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#define mozilla_dom_FetchUtil_h
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#include "nsString.h"
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#include "nsError.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/FormData.h"
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#define WASM_CONTENT_TYPE "application/wasm"
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class nsIPrincipal;
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class nsIHttpChannel;
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namespace mozilla::dom {
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class Document;
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class InternalRequest;
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class WorkerPrivate;
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#define FETCH_KEEPALIVE_MAX_SIZE 65536
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class FetchUtil final {
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private:
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FetchUtil() = delete;
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public:
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/**
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* Sets outMethod to a valid HTTP request method string based on an input
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* method. Implements checks and normalization as specified by the Fetch
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* specification. Returns NS_ERROR_DOM_SECURITY_ERR if the method is invalid.
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* Otherwise returns NS_OK and the normalized method via outMethod.
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*/
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static nsresult GetValidRequestMethod(const nsACString& aMethod,
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nsCString& outMethod);
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/**
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* Extracts an HTTP header from a substring range.
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*/
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static bool ExtractHeader(nsACString::const_iterator& aStart,
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nsACString::const_iterator& aEnd,
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nsCString& aHeaderName, nsCString& aHeaderValue,
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bool* aWasEmptyHeader);
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static nsresult SetRequestReferrer(nsIPrincipal* aPrincipal, Document* aDoc,
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nsIHttpChannel* aChannel,
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InternalRequest& aRequest);
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/**
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* The WebAssembly alt data type includes build-id, cpu-id and other relevant
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* state that is necessary to ensure the validity of caching machine code and
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* metadata in alt data. InitWasmAltDataType() must be called during startup
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* before the first fetch(), ensuring that !WasmAltDataType.IsEmpty().
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*/
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static const nsCString WasmAltDataType;
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static void InitWasmAltDataType();
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/**
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* Check that the given object is a Response and, if so, stream to the given
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* JS consumer. On any failure, this function will report an error on the
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* given JSContext before returning false. If executing in a worker, the
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* WorkerPrivate must be given.
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*/
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static bool StreamResponseToJS(JSContext* aCx, JS::Handle<JSObject*> aObj,
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JS::MimeType aMimeType,
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JS::StreamConsumer* aConsumer,
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WorkerPrivate* aMaybeWorker);
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/**
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* Called by JS to report (i.e., throw) an error that was passed to the
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* JS::StreamConsumer::streamError() method on a random stream thread.
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* This method is passed by function pointer to the JS engine hence the
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* untyped 'size_t' instead of Gecko 'nsresult'.
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*/
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static void ReportJSStreamError(JSContext* aCx, size_t aErrorCode);
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/**
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* Implements fetch spec
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* https://fetch.spec.whatwg.org/#http-network-or-cache-fetch for
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* bounding the keepalive request size
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*/
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static bool IncrementPendingKeepaliveRequestSize(nsILoadGroup* aLoadGroup,
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const uint64_t aBodyLength);
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static void DecrementPendingKeepaliveRequestSize(nsILoadGroup* aLoadGroup,
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const uint64_t aBodyLength);
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/**
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* Wrapper to fetch loadgroup from the global object
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*/
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static nsCOMPtr<nsILoadGroup> GetLoadGroupFromGlobal(
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nsIGlobalObject* aGlobal);
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};
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} // namespace mozilla::dom
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#endif
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