1 files changed, 77 insertions, 0 deletions
diff --git a/dom/fetch/FetchUtil.h b/dom/fetch/FetchUtil.h
new file mode 100644
index 0000000000..5907e209a4
--- /dev/null
+++ b/dom/fetch/FetchUtil.h
@@ -0,0 +1,77 @@
+/* -*- 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"
+#define WASM_ALT_DATA_TYPE_V1 "wasm/machine-code/1"
+
+class nsIPrincipal;
+class nsIHttpChannel;
+
+namespace mozilla {
+namespace 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);
+
+  /**
+   * 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::HandleObject 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 dom
+}  // namespace mozilla
+#endif