diff options
Diffstat (limited to 'dom/fetch/InternalHeaders.cpp')
| -rw-r--r-- | dom/fetch/InternalHeaders.cpp | 423 |
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 |