1 files changed, 178 insertions, 0 deletions
diff --git a/dom/fetch/InternalHeaders.h b/dom/fetch/InternalHeaders.h
new file mode 100644
index 0000000000..2fac237733
--- /dev/null
+++ b/dom/fetch/InternalHeaders.h
@@ -0,0 +1,178 @@
+/* -*- 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_InternalHeaders_h
+#define mozilla_dom_InternalHeaders_h
+
+// needed for HeadersGuardEnum.
+#include "mozilla/dom/HeadersBinding.h"
+#include "mozilla/dom/RequestBinding.h"
+#include "mozilla/dom/UnionTypes.h"
+
+#include "nsClassHashtable.h"
+#include "nsWrapperCache.h"
+
+class nsIRequest;
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+template <typename K, typename V>
+class Record;
+class HeadersEntry;
+
+class InternalHeaders final {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(InternalHeaders)
+
+ public:
+  struct Entry {
+    Entry(const nsACString& aName, const nsACString& aValue)
+        : mName(aName), mValue(aValue) {}
+
+    Entry() = default;
+
+    nsCString mName;
+    nsCString mValue;
+  };
+
+ private:
+  HeadersGuardEnum mGuard;
+  nsTArray<Entry> mList;
+
+  nsTArray<Entry> mSortedList;
+
+  // This boolean is set to true at any writing operation to mList. It's set to
+  // false when mSortedList is regenerated. This happens when the header is
+  // iterated.
+  bool mListDirty;
+
+ public:
+  explicit InternalHeaders(HeadersGuardEnum aGuard = HeadersGuardEnum::None)
+      : mGuard(aGuard), mListDirty(false) {}
+
+  explicit InternalHeaders(const InternalHeaders& aOther)
+      : mGuard(HeadersGuardEnum::None), mListDirty(true) {
+    ErrorResult result;
+    Fill(aOther, result);
+    MOZ_ASSERT(!result.Failed());
+    // Note that it's important to set the guard after Fill(), to make sure
+    // that Fill() doesn't fail if aOther is immutable.
+    mGuard = aOther.mGuard;
+  }
+
+  explicit InternalHeaders(nsTArray<Entry>&& aHeaders,
+                           HeadersGuardEnum aGuard = HeadersGuardEnum::None);
+
+  InternalHeaders(const nsTArray<HeadersEntry>& aHeadersEntryList,
+                  HeadersGuardEnum aGuard);
+
+  void ToIPC(nsTArray<HeadersEntry>& aIPCHeaders, HeadersGuardEnum& aGuard);
+
+  void Append(const nsACString& aName, const nsACString& aValue,
+              ErrorResult& aRv);
+  void Delete(const nsACString& aName, ErrorResult& aRv);
+  void Get(const nsACString& aName, nsACString& aValue, ErrorResult& aRv) const;
+  void GetFirst(const nsACString& aName, nsACString& aValue,
+                ErrorResult& aRv) const;
+  bool Has(const nsACString& aName, ErrorResult& aRv) const;
+  void Set(const nsACString& aName, const nsACString& aValue, ErrorResult& aRv);
+
+  uint32_t GetIterableLength() {
+    MaybeSortList();
+    return mSortedList.Length();
+  }
+  const NS_ConvertASCIItoUTF16 GetKeyAtIndex(unsigned aIndex) {
+    MaybeSortList();
+    MOZ_ASSERT(aIndex < mSortedList.Length());
+    return NS_ConvertASCIItoUTF16(mSortedList[aIndex].mName);
+  }
+  const NS_ConvertASCIItoUTF16 GetValueAtIndex(unsigned aIndex) {
+    MaybeSortList();
+    MOZ_ASSERT(aIndex < mSortedList.Length());
+    return NS_ConvertASCIItoUTF16(mSortedList[aIndex].mValue);
+  }
+
+  void Clear();
+
+  HeadersGuardEnum Guard() const { return mGuard; }
+  void SetGuard(HeadersGuardEnum aGuard, ErrorResult& aRv);
+
+  void Fill(const InternalHeaders& aInit, ErrorResult& aRv);
+  void Fill(const Sequence<Sequence<nsCString>>& aInit, ErrorResult& aRv);
+  void Fill(const Record<nsCString, nsCString>& aInit, ErrorResult& aRv);
+  void FillResponseHeaders(nsIRequest* aRequest);
+
+  bool HasOnlySimpleHeaders() const;
+
+  bool HasRevalidationHeaders() const;
+
+  static already_AddRefed<InternalHeaders> BasicHeaders(
+      InternalHeaders* aHeaders);
+
+  static already_AddRefed<InternalHeaders> CORSHeaders(
+      InternalHeaders* aHeaders,
+      RequestCredentials mCredentialsMode = RequestCredentials::Omit);
+
+  void GetEntries(nsTArray<InternalHeaders::Entry>& aEntries) const;
+
+  void GetUnsafeHeaders(nsTArray<nsCString>& aNames) const;
+
+ private:
+  virtual ~InternalHeaders();
+
+  static bool IsInvalidName(const nsACString& aName, ErrorResult& aRv);
+  static bool IsInvalidValue(const nsACString& aValue, ErrorResult& aRv);
+  bool IsValidHeaderValue(const nsCString& aLowerName,
+                          const nsCString& aNormalizedValue, ErrorResult& aRv);
+  bool IsImmutable(ErrorResult& aRv) const;
+  bool IsForbiddenRequestHeader(const nsCString& aName) const;
+  bool IsForbiddenRequestNoCorsHeader(const nsCString& aName) const;
+  bool IsForbiddenRequestNoCorsHeader(const nsCString& aName,
+                                      const nsACString& aValue) const;
+  bool IsForbiddenResponseHeader(const nsCString& aName) const;
+
+  bool IsInvalidMutableHeader(const nsCString& aName, ErrorResult& aRv) const {
+    return IsInvalidMutableHeader(aName, ""_ns, aRv);
+  }
+
+  bool IsInvalidMutableHeader(const nsCString& aName, const nsACString& aValue,
+                              ErrorResult& aRv) const {
+    return IsInvalidName(aName, aRv) || IsInvalidValue(aValue, aRv) ||
+           IsImmutable(aRv) || IsForbiddenRequestHeader(aName) ||
+           IsForbiddenRequestNoCorsHeader(aName, aValue) ||
+           IsForbiddenResponseHeader(aName);
+  }
+
+  // This method updates the passed name to match the capitalization of a header
+  // with the same name (ignoring case, per the spec).
+  void ReuseExistingNameIfExists(nsCString& aName) const;
+
+  void RemovePrivilegedNoCorsRequestHeaders();
+
+  void GetInternal(const nsCString& aLowerName, nsACString& aValue,
+                   ErrorResult& aRv) const;
+
+  bool DeleteInternal(const nsCString& aLowerName, ErrorResult& aRv);
+
+  static bool IsNoCorsSafelistedRequestHeaderName(const nsCString& aName);
+
+  static bool IsPrivilegedNoCorsRequestHeaderName(const nsCString& aName);
+
+  static bool IsSimpleHeader(const nsCString& aName, const nsACString& aValue);
+
+  static bool IsRevalidationHeader(const nsCString& aName);
+
+  void MaybeSortList();
+  void SetListDirty();
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_InternalHeaders_h