Add m-esr52 at 52.6.0

1 files changed, 423 insertions, 0 deletions

diff --git a/dom/fetch/InternalHeaders.cpp b/dom/fetch/InternalHeaders.cpp
new file mode 100644
index 000000000..e81863173
--- /dev/null
+++ b/dom/fetch/InternalHeaders.cpp
@@ -0,0 +1,423 @@
+/* -*- 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/. */
+
+#include "mozilla/dom/InternalHeaders.h"
+
+#include "mozilla/dom/FetchTypes.h"
+#include "mozilla/ErrorResult.h"
+
+#include "nsCharSeparatedTokenizer.h"
+#include "nsContentUtils.h"
+#include "nsNetUtil.h"
+#include "nsReadableUtils.h"
+
+namespace mozilla {
+namespace dom {
+
+InternalHeaders::InternalHeaders(const nsTArray<Entry>&& aHeaders,
+                                 HeadersGuardEnum aGuard)
+  : mGuard(aGuard)
+  , mList(aHeaders)
+{
+}
+
+InternalHeaders::InternalHeaders(const nsTArray<HeadersEntry>& aHeadersEntryList,
+                                 HeadersGuardEnum aGuard)
+  : mGuard(aGuard)
+{
+  for (const HeadersEntry& headersEntry : aHeadersEntryList) {
+    mList.AppendElement(Entry(headersEntry.name(), headersEntry.value()));
+  }
+}
+
+void
+InternalHeaders::ToIPC(nsTArray<HeadersEntry>& aIPCHeaders,
+                       HeadersGuardEnum& aGuard)
+{
+  aGuard = mGuard;
+
+  aIPCHeaders.Clear();
+  for (Entry& entry : mList) {
+    aIPCHeaders.AppendElement(HeadersEntry(entry.mName, entry.mValue));
+  }
+}
+
+void
+InternalHeaders::Append(const nsACString& aName, const nsACString& aValue,
+                        ErrorResult& aRv)
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidMutableHeader(lowerName, aValue, aRv)) {
+    return;
+  }
+
+  mList.AppendElement(Entry(lowerName, aValue));
+}
+
+void
+InternalHeaders::Delete(const nsACString& aName, ErrorResult& aRv)
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidMutableHeader(lowerName, aRv)) {
+    return;
+  }
+
+  // remove in reverse order to minimize copying
+  for (int32_t i = mList.Length() - 1; i >= 0; --i) {
+    if (lowerName == mList[i].mName) {
+      mList.RemoveElementAt(i);
+    }
+  }
+}
+
+void
+InternalHeaders::Get(const nsACString& aName, nsACString& aValue, ErrorResult& aRv) const
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidName(lowerName, aRv)) {
+    return;
+  }
+
+  const char* delimiter = ",";
+  bool firstValueFound = false;
+
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    if (lowerName == mList[i].mName) {
+      if (firstValueFound) {
+        aValue += delimiter;
+      }
+      aValue += mList[i].mValue;
+      firstValueFound = true;
+    }
+  }
+
+  // No value found, so return null to content
+  if (!firstValueFound) {
+    aValue.SetIsVoid(true);
+  }
+}
+
+void
+InternalHeaders::GetFirst(const nsACString& aName, nsACString& aValue, ErrorResult& aRv) const
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidName(lowerName, aRv)) {
+    return;
+  }
+
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    if (lowerName == mList[i].mName) {
+      aValue = mList[i].mValue;
+      return;
+    }
+  }
+
+  // No value found, so return null to content
+  aValue.SetIsVoid(true);
+}
+
+bool
+InternalHeaders::Has(const nsACString& aName, ErrorResult& aRv) const
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidName(lowerName, aRv)) {
+    return false;
+  }
+
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    if (lowerName == mList[i].mName) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void
+InternalHeaders::Set(const nsACString& aName, const nsACString& aValue, ErrorResult& aRv)
+{
+  nsAutoCString lowerName;
+  ToLowerCase(aName, lowerName);
+
+  if (IsInvalidMutableHeader(lowerName, aValue, aRv)) {
+    return;
+  }
+
+  int32_t firstIndex = INT32_MAX;
+
+  // remove in reverse order to minimize copying
+  for (int32_t i = mList.Length() - 1; i >= 0; --i) {
+    if (lowerName == mList[i].mName) {
+      firstIndex = std::min(firstIndex, i);
+      mList.RemoveElementAt(i);
+    }
+  }
+
+  if (firstIndex < INT32_MAX) {
+    Entry* entry = mList.InsertElementAt(firstIndex);
+    entry->mName = lowerName;
+    entry->mValue = aValue;
+  } else {
+    mList.AppendElement(Entry(lowerName, aValue));
+  }
+}
+
+void
+InternalHeaders::Clear()
+{
+  mList.Clear();
+}
+
+void
+InternalHeaders::SetGuard(HeadersGuardEnum aGuard, ErrorResult& aRv)
+{
+  // The guard is only checked during ::Set() and ::Append() in the spec.  It
+  // does not require revalidating headers already set.
+  mGuard = aGuard;
+}
+
+InternalHeaders::~InternalHeaders()
+{
+}
+
+// static
+bool
+InternalHeaders::IsSimpleHeader(const nsACString& aName, const nsACString& aValue)
+{
+  // Note, we must allow a null content-type value here to support
+  // get("content-type"), but the IsInvalidValue() check will prevent null
+  // from being set or appended.
+  return aName.EqualsLiteral("accept") ||
+         aName.EqualsLiteral("accept-language") ||
+         aName.EqualsLiteral("content-language") ||
+         (aName.EqualsLiteral("content-type") &&
+          nsContentUtils::IsAllowedNonCorsContentType(aValue));
+}
+
+// static
+bool
+InternalHeaders::IsRevalidationHeader(const nsACString& aName)
+{
+  return aName.EqualsLiteral("if-modified-since") ||
+         aName.EqualsLiteral("if-none-match") ||
+         aName.EqualsLiteral("if-unmodified-since") ||
+         aName.EqualsLiteral("if-match") ||
+         aName.EqualsLiteral("if-range");
+}
+
+//static
+bool
+InternalHeaders::IsInvalidName(const nsACString& aName, ErrorResult& aRv)
+{
+  if (!NS_IsValidHTTPToken(aName)) {
+    NS_ConvertUTF8toUTF16 label(aName);
+    aRv.ThrowTypeError<MSG_INVALID_HEADER_NAME>(label);
+    return true;
+  }
+
+  return false;
+}
+
+// static
+bool
+InternalHeaders::IsInvalidValue(const nsACString& aValue, ErrorResult& aRv)
+{
+  if (!NS_IsReasonableHTTPHeaderValue(aValue)) {
+    NS_ConvertUTF8toUTF16 label(aValue);
+    aRv.ThrowTypeError<MSG_INVALID_HEADER_VALUE>(label);
+    return true;
+  }
+  return false;
+}
+
+bool
+InternalHeaders::IsImmutable(ErrorResult& aRv) const
+{
+  if (mGuard == HeadersGuardEnum::Immutable) {
+    aRv.ThrowTypeError<MSG_HEADERS_IMMUTABLE>();
+    return true;
+  }
+  return false;
+}
+
+bool
+InternalHeaders::IsForbiddenRequestHeader(const nsACString& aName) const
+{
+  return mGuard == HeadersGuardEnum::Request &&
+         nsContentUtils::IsForbiddenRequestHeader(aName);
+}
+
+bool
+InternalHeaders::IsForbiddenRequestNoCorsHeader(const nsACString& aName) const
+{
+  return mGuard == HeadersGuardEnum::Request_no_cors &&
+         !IsSimpleHeader(aName, EmptyCString());
+}
+
+bool
+InternalHeaders::IsForbiddenRequestNoCorsHeader(const nsACString& aName,
+                                                const nsACString& aValue) const
+{
+  return mGuard == HeadersGuardEnum::Request_no_cors &&
+         !IsSimpleHeader(aName, aValue);
+}
+
+bool
+InternalHeaders::IsForbiddenResponseHeader(const nsACString& aName) const
+{
+  return mGuard == HeadersGuardEnum::Response &&
+         nsContentUtils::IsForbiddenResponseHeader(aName);
+}
+
+void
+InternalHeaders::Fill(const InternalHeaders& aInit, ErrorResult& aRv)
+{
+  const nsTArray<Entry>& list = aInit.mList;
+  for (uint32_t i = 0; i < list.Length() && !aRv.Failed(); ++i) {
+    const Entry& entry = list[i];
+    Append(entry.mName, entry.mValue, aRv);
+  }
+}
+
+void
+InternalHeaders::Fill(const Sequence<Sequence<nsCString>>& aInit, ErrorResult& aRv)
+{
+  for (uint32_t i = 0; i < aInit.Length() && !aRv.Failed(); ++i) {
+    const Sequence<nsCString>& tuple = aInit[i];
+    if (tuple.Length() != 2) {
+      aRv.ThrowTypeError<MSG_INVALID_HEADER_SEQUENCE>();
+      return;
+    }
+    Append(tuple[0], tuple[1], aRv);
+  }
+}
+
+void
+InternalHeaders::Fill(const MozMap<nsCString>& aInit, ErrorResult& aRv)
+{
+  nsTArray<nsString> keys;
+  aInit.GetKeys(keys);
+  for (uint32_t i = 0; i < keys.Length() && !aRv.Failed(); ++i) {
+    Append(NS_ConvertUTF16toUTF8(keys[i]), aInit.Get(keys[i]), aRv);
+  }
+}
+
+bool
+InternalHeaders::HasOnlySimpleHeaders() const
+{
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    if (!IsSimpleHeader(mList[i].mName, mList[i].mValue)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool
+InternalHeaders::HasRevalidationHeaders() const
+{
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    if (IsRevalidationHeader(mList[i].mName)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// static
+already_AddRefed<InternalHeaders>
+InternalHeaders::BasicHeaders(InternalHeaders* aHeaders)
+{
+  RefPtr<InternalHeaders> basic = new InternalHeaders(*aHeaders);
+  ErrorResult result;
+  // The Set-Cookie headers cannot be invalid mutable headers, so the Delete
+  // must succeed.
+  basic->Delete(NS_LITERAL_CSTRING("Set-Cookie"), result);
+  MOZ_ASSERT(!result.Failed());
+  basic->Delete(NS_LITERAL_CSTRING("Set-Cookie2"), result);
+  MOZ_ASSERT(!result.Failed());
+  return basic.forget();
+}
+
+// static
+already_AddRefed<InternalHeaders>
+InternalHeaders::CORSHeaders(InternalHeaders* aHeaders)
+{
+  RefPtr<InternalHeaders> cors = new InternalHeaders(aHeaders->mGuard);
+  ErrorResult result;
+
+  nsAutoCString acExposedNames;
+  aHeaders->GetFirst(NS_LITERAL_CSTRING("Access-Control-Expose-Headers"), acExposedNames, result);
+  MOZ_ASSERT(!result.Failed());
+
+  AutoTArray<nsCString, 5> exposeNamesArray;
+  nsCCharSeparatedTokenizer exposeTokens(acExposedNames, ',');
+  while (exposeTokens.hasMoreTokens()) {
+    const nsDependentCSubstring& token = exposeTokens.nextToken();
+    if (token.IsEmpty()) {
+      continue;
+    }
+
+    if (!NS_IsValidHTTPToken(token)) {
+      NS_WARNING("Got invalid HTTP token in Access-Control-Expose-Headers. Header value is:");
+      NS_WARNING(acExposedNames.get());
+      exposeNamesArray.Clear();
+      break;
+    }
+
+    exposeNamesArray.AppendElement(token);
+  }
+
+  nsCaseInsensitiveCStringArrayComparator comp;
+  for (uint32_t i = 0; i < aHeaders->mList.Length(); ++i) {
+    const Entry& entry = aHeaders->mList[i];
+    if (entry.mName.EqualsASCII("cache-control") ||
+        entry.mName.EqualsASCII("content-language") ||
+        entry.mName.EqualsASCII("content-type") ||
+        entry.mName.EqualsASCII("expires") ||
+        entry.mName.EqualsASCII("last-modified") ||
+        entry.mName.EqualsASCII("pragma") ||
+        exposeNamesArray.Contains(entry.mName, comp)) {
+      cors->Append(entry.mName, entry.mValue, result);
+      MOZ_ASSERT(!result.Failed());
+    }
+  }
+
+  return cors.forget();
+}
+
+void
+InternalHeaders::GetEntries(nsTArray<InternalHeaders::Entry>& aEntries) const
+{
+  MOZ_ASSERT(aEntries.IsEmpty());
+  aEntries.AppendElements(mList);
+}
+
+void
+InternalHeaders::GetUnsafeHeaders(nsTArray<nsCString>& aNames) const
+{
+  MOZ_ASSERT(aNames.IsEmpty());
+  for (uint32_t i = 0; i < mList.Length(); ++i) {
+    const Entry& header = mList[i];
+    if (!InternalHeaders::IsSimpleHeader(header.mName, header.mValue)) {
+      aNames.AppendElement(header.mName);
+    }
+  }
+}
+
+} // namespace dom
+} // namespace mozilla