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-rw-r--r--dom/fetch/InternalHeaders.cpp423
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