mirror of
https://github.com/mozilla/gecko-dev.git
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357 lines
11 KiB
C++
357 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FormData.h"
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#include "nsIInputStream.h"
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#include "mozilla/dom/File.h"
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#include "mozilla/dom/Directory.h"
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#include "mozilla/dom/HTMLFormElement.h"
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#include "mozilla/Encoding.h"
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#include "MultipartBlobImpl.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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FormData::FormData(nsISupports* aOwner, NotNull<const Encoding*> aEncoding,
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Element* aSubmitter)
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: HTMLFormSubmission(nullptr, EmptyString(), aEncoding, aSubmitter),
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mOwner(aOwner) {}
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FormData::FormData(const FormData& aFormData)
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: HTMLFormSubmission(aFormData.mActionURL, aFormData.mTarget,
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aFormData.mEncoding, aFormData.mSubmitter) {
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mOwner = aFormData.mOwner;
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mFormData = aFormData.mFormData.Clone();
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}
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namespace {
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already_AddRefed<File> GetOrCreateFileCalledBlob(Blob& aBlob,
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ErrorResult& aRv) {
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// If this is file, we can just use it
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RefPtr<File> file = aBlob.ToFile();
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if (file) {
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return file.forget();
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}
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// Forcing 'blob' as filename
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file = aBlob.ToFile(u"blob"_ns, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return file.forget();
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}
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already_AddRefed<File> GetBlobForFormDataStorage(
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Blob& aBlob, const Optional<nsAString>& aFilename, ErrorResult& aRv) {
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// Forcing a filename
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if (aFilename.WasPassed()) {
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RefPtr<File> file = aBlob.ToFile(aFilename.Value(), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return file.forget();
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}
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return GetOrCreateFileCalledBlob(aBlob, aRv);
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}
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} // namespace
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// -------------------------------------------------------------------------
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// nsISupports
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NS_IMPL_CYCLE_COLLECTION_CLASS(FormData)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(FormData)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mOwner)
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for (uint32_t i = 0, len = tmp->mFormData.Length(); i < len; ++i) {
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ImplCycleCollectionUnlink(tmp->mFormData[i].value);
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(FormData)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
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for (uint32_t i = 0, len = tmp->mFormData.Length(); i < len; ++i) {
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ImplCycleCollectionTraverse(cb, tmp->mFormData[i].value,
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"mFormData[i].GetAsBlob()", 0);
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(FormData)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(FormData)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(FormData)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FormData)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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// -------------------------------------------------------------------------
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// HTMLFormSubmission
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nsresult FormData::GetEncodedSubmission(nsIURI* aURI,
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nsIInputStream** aPostDataStream,
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nsCOMPtr<nsIURI>& aOutURI) {
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MOZ_ASSERT_UNREACHABLE("Shouldn't call FormData::GetEncodedSubmission");
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return NS_OK;
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}
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void FormData::Append(const nsAString& aName, const nsAString& aValue,
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ErrorResult& aRv) {
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AddNameValuePair(aName, aValue);
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}
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void FormData::Append(const nsAString& aName, Blob& aBlob,
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const Optional<nsAString>& aFilename, ErrorResult& aRv) {
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RefPtr<File> file = GetBlobForFormDataStorage(aBlob, aFilename, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return;
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}
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AddNameBlobOrNullPair(aName, file);
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}
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void FormData::Append(const nsAString& aName, Directory* aDirectory) {
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AddNameDirectoryPair(aName, aDirectory);
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}
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void FormData::Delete(const nsAString& aName) {
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mFormData.RemoveElementsBy([&aName](const auto& formDataItem) {
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return aName.Equals(formDataItem.name);
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});
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}
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void FormData::Get(const nsAString& aName,
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Nullable<OwningBlobOrDirectoryOrUSVString>& aOutValue) {
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for (uint32_t i = 0; i < mFormData.Length(); ++i) {
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if (aName.Equals(mFormData[i].name)) {
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aOutValue.SetValue() = mFormData[i].value;
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return;
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}
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}
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aOutValue.SetNull();
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}
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void FormData::GetAll(const nsAString& aName,
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nsTArray<OwningBlobOrDirectoryOrUSVString>& aValues) {
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for (uint32_t i = 0; i < mFormData.Length(); ++i) {
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if (aName.Equals(mFormData[i].name)) {
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OwningBlobOrDirectoryOrUSVString* element = aValues.AppendElement();
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*element = mFormData[i].value;
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}
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}
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}
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bool FormData::Has(const nsAString& aName) {
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for (uint32_t i = 0; i < mFormData.Length(); ++i) {
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if (aName.Equals(mFormData[i].name)) {
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return true;
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}
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}
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return false;
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}
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nsresult FormData::AddNameBlobOrNullPair(const nsAString& aName, Blob* aBlob) {
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RefPtr<File> file;
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if (!aBlob) {
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FormDataTuple* data = mFormData.AppendElement();
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SetNameValuePair(data, aName, EmptyString(), true /* aWasNullBlob */);
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return NS_OK;
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}
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ErrorResult rv;
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file = GetOrCreateFileCalledBlob(*aBlob, rv);
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if (NS_WARN_IF(rv.Failed())) {
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return rv.StealNSResult();
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}
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FormDataTuple* data = mFormData.AppendElement();
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SetNameFilePair(data, aName, file);
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return NS_OK;
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}
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nsresult FormData::AddNameDirectoryPair(const nsAString& aName,
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Directory* aDirectory) {
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MOZ_ASSERT(aDirectory);
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FormDataTuple* data = mFormData.AppendElement();
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SetNameDirectoryPair(data, aName, aDirectory);
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return NS_OK;
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}
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FormData::FormDataTuple* FormData::RemoveAllOthersAndGetFirstFormDataTuple(
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const nsAString& aName) {
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FormDataTuple* lastFoundTuple = nullptr;
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uint32_t lastFoundIndex = mFormData.Length();
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// We have to use this slightly awkward for loop since uint32_t >= 0 is an
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// error for being always true.
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for (uint32_t i = mFormData.Length(); i-- > 0;) {
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if (aName.Equals(mFormData[i].name)) {
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if (lastFoundTuple) {
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// The one we found earlier was not the first one, we can remove it.
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mFormData.RemoveElementAt(lastFoundIndex);
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}
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lastFoundTuple = &mFormData[i];
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lastFoundIndex = i;
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}
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}
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return lastFoundTuple;
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}
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void FormData::Set(const nsAString& aName, Blob& aBlob,
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const Optional<nsAString>& aFilename, ErrorResult& aRv) {
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FormDataTuple* tuple = RemoveAllOthersAndGetFirstFormDataTuple(aName);
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if (tuple) {
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RefPtr<File> file = GetBlobForFormDataStorage(aBlob, aFilename, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return;
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}
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SetNameFilePair(tuple, aName, file);
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} else {
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Append(aName, aBlob, aFilename, aRv);
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}
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}
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void FormData::Set(const nsAString& aName, const nsAString& aValue,
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ErrorResult& aRv) {
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FormDataTuple* tuple = RemoveAllOthersAndGetFirstFormDataTuple(aName);
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if (tuple) {
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SetNameValuePair(tuple, aName, aValue);
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} else {
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Append(aName, aValue, aRv);
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}
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}
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uint32_t FormData::GetIterableLength() const { return mFormData.Length(); }
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const nsAString& FormData::GetKeyAtIndex(uint32_t aIndex) const {
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MOZ_ASSERT(aIndex < mFormData.Length());
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return mFormData[aIndex].name;
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}
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const OwningBlobOrDirectoryOrUSVString& FormData::GetValueAtIndex(
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uint32_t aIndex) const {
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MOZ_ASSERT(aIndex < mFormData.Length());
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return mFormData[aIndex].value;
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}
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void FormData::SetNameValuePair(FormDataTuple* aData, const nsAString& aName,
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const nsAString& aValue, bool aWasNullBlob) {
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MOZ_ASSERT(aData);
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aData->name = aName;
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aData->wasNullBlob = aWasNullBlob;
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aData->value.SetAsUSVString() = aValue;
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}
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void FormData::SetNameFilePair(FormDataTuple* aData, const nsAString& aName,
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File* aFile) {
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MOZ_ASSERT(aData);
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MOZ_ASSERT(aFile);
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aData->name = aName;
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aData->wasNullBlob = false;
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aData->value.SetAsBlob() = aFile;
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}
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void FormData::SetNameDirectoryPair(FormDataTuple* aData,
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const nsAString& aName,
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Directory* aDirectory) {
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MOZ_ASSERT(aData);
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MOZ_ASSERT(aDirectory);
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aData->name = aName;
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aData->wasNullBlob = false;
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aData->value.SetAsDirectory() = aDirectory;
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}
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/* virtual */
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JSObject* FormData::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return FormData_Binding::Wrap(aCx, this, aGivenProto);
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}
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/* static */
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already_AddRefed<FormData> FormData::Constructor(
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const GlobalObject& aGlobal,
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const Optional<NonNull<HTMLFormElement> >& aFormElement, ErrorResult& aRv) {
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RefPtr<FormData> formData = new FormData(aGlobal.GetAsSupports());
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if (aFormElement.WasPassed()) {
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aRv = aFormElement.Value().ConstructEntryList(formData);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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// Step 9. Return a shallow clone of entry list.
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#constructing-form-data-set
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if (StaticPrefs::dom_formdata_event_enabled()) {
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formData = formData->Clone();
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}
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}
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return formData.forget();
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}
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// contentTypeWithCharset can be set to the contentType or
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// contentType+charset based on what the spec says.
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// See: https://fetch.spec.whatwg.org/#concept-bodyinit-extract
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nsresult FormData::GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
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nsACString& aContentTypeWithCharset,
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nsACString& aCharset) const {
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FSMultipartFormData fs(nullptr, EmptyString(), UTF_8_ENCODING, nullptr);
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nsresult rv = CopySubmissionDataTo(&fs);
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NS_ENSURE_SUCCESS(rv, rv);
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fs.GetContentType(aContentTypeWithCharset);
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aCharset.Truncate();
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*aContentLength = 0;
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NS_ADDREF(*aBody = fs.GetSubmissionBody(aContentLength));
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return NS_OK;
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}
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already_AddRefed<FormData> FormData::Clone() {
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RefPtr<FormData> formData = new FormData(*this);
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return formData.forget();
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}
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nsresult FormData::CopySubmissionDataTo(
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HTMLFormSubmission* aFormSubmission) const {
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MOZ_ASSERT(aFormSubmission, "Must have FormSubmission!");
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for (size_t i = 0; i < mFormData.Length(); ++i) {
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if (mFormData[i].wasNullBlob) {
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MOZ_ASSERT(mFormData[i].value.IsUSVString());
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aFormSubmission->AddNameBlobOrNullPair(mFormData[i].name, nullptr);
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} else if (mFormData[i].value.IsUSVString()) {
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aFormSubmission->AddNameValuePair(mFormData[i].name,
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mFormData[i].value.GetAsUSVString());
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} else if (mFormData[i].value.IsBlob()) {
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aFormSubmission->AddNameBlobOrNullPair(mFormData[i].name,
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mFormData[i].value.GetAsBlob());
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} else {
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MOZ_ASSERT(mFormData[i].value.IsDirectory());
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aFormSubmission->AddNameDirectoryPair(
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mFormData[i].name, mFormData[i].value.GetAsDirectory());
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}
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}
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return NS_OK;
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}
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