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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 mozilla_dom_FetchUtil_h
#define mozilla_dom_FetchUtil_h
#include "nsString.h"
#include "nsError.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FormData.h"
#define WASM_CONTENT_TYPE "application/wasm"
class nsIPrincipal;
class nsIHttpChannel;
namespace mozilla::dom {
class Document;
class InternalRequest;
class WorkerPrivate;
class FetchUtil final {
private:
FetchUtil() = delete;
public:
/**
* Sets outMethod to a valid HTTP request method string based on an input
* method. Implements checks and normalization as specified by the Fetch
* specification. Returns NS_ERROR_DOM_SECURITY_ERR if the method is invalid.
* Otherwise returns NS_OK and the normalized method via outMethod.
*/
static nsresult GetValidRequestMethod(const nsACString& aMethod,
nsCString& outMethod);
/**
* Extracts an HTTP header from a substring range.
*/
static bool ExtractHeader(nsACString::const_iterator& aStart,
nsACString::const_iterator& aEnd,
nsCString& aHeaderName, nsCString& aHeaderValue,
bool* aWasEmptyHeader);
static nsresult SetRequestReferrer(nsIPrincipal* aPrincipal, Document* aDoc,
nsIHttpChannel* aChannel,
InternalRequest& aRequest);
/**
* The WebAssembly alt data type includes build-id, cpu-id and other relevant
* state that is necessary to ensure the validity of caching machine code and
* metadata in alt data. InitWasmAltDataType() must be called during startup
* before the first fetch(), ensuring that !WasmAltDataType.IsEmpty().
*/
static const nsCString WasmAltDataType;
static void InitWasmAltDataType();
/**
* Check that the given object is a Response and, if so, stream to the given
* JS consumer. On any failure, this function will report an error on the
* given JSContext before returning false. If executing in a worker, the
* WorkerPrivate must be given.
*/
static bool StreamResponseToJS(JSContext* aCx, JS::Handle<JSObject*> aObj,
JS::MimeType aMimeType,
JS::StreamConsumer* aConsumer,
WorkerPrivate* aMaybeWorker);
/**
* Called by JS to report (i.e., throw) an error that was passed to the
* JS::StreamConsumer::streamError() method on a random stream thread.
* This method is passed by function pointer to the JS engine hence the
* untyped 'size_t' instead of Gecko 'nsresult'.
*/
static void ReportJSStreamError(JSContext* aCx, size_t aErrorCode);
};
} // namespace mozilla::dom
#endif
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