зеркало из https://github.com/mozilla/gecko-dev.git
432 строки
11 KiB
C++
432 строки
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 "nsIVariant.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)
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: HTMLFormSubmission(UTF_8_ENCODING, nullptr)
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, mOwner(aOwner)
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{
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}
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namespace {
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already_AddRefed<File>
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GetOrCreateFileCalledBlob(Blob& aBlob, ErrorResult& aRv)
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{
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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(NS_LITERAL_STRING("blob"), 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>
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GetBlobForFormDataStorage(Blob& aBlob, const Optional<nsAString>& aFilename,
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ErrorResult& aRv)
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{
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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(nsIDOMFormData)
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NS_INTERFACE_MAP_ENTRY(nsIXHRSendable)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMFormData)
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NS_INTERFACE_MAP_END
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// -------------------------------------------------------------------------
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// HTMLFormSubmission
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nsresult
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FormData::GetEncodedSubmission(nsIURI* aURI,
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nsIInputStream** aPostDataStream,
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int64_t* aPostDataStreamLength)
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{
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NS_NOTREACHED("Shouldn't call FormData::GetEncodedSubmission");
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return NS_OK;
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}
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void
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FormData::Append(const nsAString& aName, const nsAString& aValue,
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ErrorResult& aRv)
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{
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AddNameValuePair(aName, aValue);
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}
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void
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FormData::Append(const nsAString& aName, Blob& aBlob,
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const Optional<nsAString>& aFilename,
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ErrorResult& aRv)
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{
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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
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FormData::Append(const nsAString& aName, Directory* aDirectory)
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{
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AddNameDirectoryPair(aName, aDirectory);
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}
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void
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FormData::Delete(const nsAString& aName)
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{
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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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mFormData.RemoveElementAt(i);
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}
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}
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}
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void
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FormData::Get(const nsAString& aName,
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Nullable<OwningBlobOrDirectoryOrUSVString>& aOutValue)
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{
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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
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FormData::GetAll(const nsAString& aName,
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nsTArray<OwningBlobOrDirectoryOrUSVString>& aValues)
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{
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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
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FormData::Has(const nsAString& aName)
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{
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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
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FormData::AddNameBlobOrNullPair(const nsAString& aName, Blob* aBlob)
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{
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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
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FormData::AddNameDirectoryPair(const nsAString& aName, Directory* aDirectory)
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{
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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*
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FormData::RemoveAllOthersAndGetFirstFormDataTuple(const nsAString& aName)
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{
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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
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FormData::Set(const nsAString& aName, Blob& aBlob,
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const Optional<nsAString>& aFilename,
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ErrorResult& aRv)
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{
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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
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FormData::Set(const nsAString& aName, const nsAString& aValue,
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ErrorResult& aRv)
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{
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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
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FormData::GetIterableLength() const
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{
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return mFormData.Length();
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}
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const nsAString&
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FormData::GetKeyAtIndex(uint32_t aIndex) const
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{
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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&
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FormData::GetValueAtIndex(uint32_t aIndex) const
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{
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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
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FormData::SetNameValuePair(FormDataTuple* aData,
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const nsAString& aName,
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const nsAString& aValue,
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bool aWasNullBlob)
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{
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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
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FormData::SetNameFilePair(FormDataTuple* aData,
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const nsAString& aName,
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File* aFile)
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{
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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
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FormData::SetNameDirectoryPair(FormDataTuple* aData,
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const nsAString& aName,
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Directory* aDirectory)
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{
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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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// -------------------------------------------------------------------------
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// nsIDOMFormData
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NS_IMETHODIMP
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FormData::Append(const nsAString& aName, nsIVariant* aValue)
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{
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uint16_t dataType;
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nsresult rv = aValue->GetDataType(&dataType);
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NS_ENSURE_SUCCESS(rv, rv);
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if (dataType == nsIDataType::VTYPE_INTERFACE ||
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dataType == nsIDataType::VTYPE_INTERFACE_IS) {
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nsCOMPtr<nsISupports> supports;
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nsID *iid;
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rv = aValue->GetAsInterface(&iid, getter_AddRefs(supports));
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NS_ENSURE_SUCCESS(rv, rv);
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free(iid);
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nsCOMPtr<nsIDOMBlob> domBlob = do_QueryInterface(supports);
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RefPtr<Blob> blob = static_cast<Blob*>(domBlob.get());
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if (domBlob) {
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Optional<nsAString> temp;
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ErrorResult rv;
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Append(aName, *blob, temp, 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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return NS_OK;
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}
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}
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char16_t* stringData = nullptr;
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uint32_t stringLen = 0;
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rv = aValue->GetAsWStringWithSize(&stringLen, &stringData);
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NS_ENSURE_SUCCESS(rv, rv);
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nsString valAsString;
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valAsString.Adopt(stringData, stringLen);
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ErrorResult error;
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Append(aName, valAsString, error);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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return NS_OK;
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}
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/* virtual */ JSObject*
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FormData::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return FormDataBinding::Wrap(aCx, this, aGivenProto);
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}
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/* static */ already_AddRefed<FormData>
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FormData::Constructor(const GlobalObject& aGlobal,
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const Optional<NonNull<HTMLFormElement> >& aFormElement,
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ErrorResult& aRv)
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{
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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().WalkFormElements(formData);
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}
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return formData.forget();
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}
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// -------------------------------------------------------------------------
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// nsIXHRSendable
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NS_IMETHODIMP
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FormData::GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
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nsACString& aContentTypeWithCharset, nsACString& aCharset)
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{
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FSMultipartFormData fs(UTF_8_ENCODING, nullptr);
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for (uint32_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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fs.AddNameBlobOrNullPair(mFormData[i].name, nullptr);
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} else if (mFormData[i].value.IsUSVString()) {
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fs.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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fs.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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fs.AddNameDirectoryPair(mFormData[i].name,
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mFormData[i].value.GetAsDirectory());
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}
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}
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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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