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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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
#include "nsFilePickerProxy.h"
#include "nsComponentManagerUtils.h"
#include "nsIFile.h"
#include "nsSimpleEnumerator.h"
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/dom/Directory.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/dom/BrowsingContext.h"
#include "mozilla/dom/IPCBlobUtils.h"
using namespace mozilla::dom;
NS_IMPL_ISUPPORTS(nsFilePickerProxy, nsIFilePicker)
nsFilePickerProxy::nsFilePickerProxy()
: mSelectedType(0), mCapture(captureNone), mIPCActive(false) {}
nsFilePickerProxy::~nsFilePickerProxy() = default;
NS_IMETHODIMP
nsFilePickerProxy::Init(BrowsingContext* aBrowsingContext,
const nsAString& aTitle, nsIFilePicker::Mode aMode) {
BrowserChild* browserChild =
BrowserChild::GetFrom(aBrowsingContext->GetDocShell());
if (!browserChild) {
return NS_ERROR_FAILURE;
}
mBrowsingContext = aBrowsingContext;
mMode = aMode;
browserChild->SendPFilePickerConstructor(this, aTitle, aMode,
aBrowsingContext);
mIPCActive = true;
return NS_OK;
}
void nsFilePickerProxy::InitNative(nsIWidget* aParent,
const nsAString& aTitle) {}
NS_IMETHODIMP
nsFilePickerProxy::AppendFilter(const nsAString& aTitle,
const nsAString& aFilter) {
mFilterNames.AppendElement(aTitle);
mFilters.AppendElement(aFilter);
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::GetCapture(nsIFilePicker::CaptureTarget* aCapture) {
*aCapture = mCapture;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::SetCapture(nsIFilePicker::CaptureTarget aCapture) {
mCapture = aCapture;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::GetDefaultString(nsAString& aDefaultString) {
aDefaultString = mDefault;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::SetDefaultString(const nsAString& aDefaultString) {
mDefault = aDefaultString;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::GetDefaultExtension(nsAString& aDefaultExtension) {
aDefaultExtension = mDefaultExtension;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::SetDefaultExtension(const nsAString& aDefaultExtension) {
mDefaultExtension = aDefaultExtension;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::GetFilterIndex(int32_t* aFilterIndex) {
*aFilterIndex = mSelectedType;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::SetFilterIndex(int32_t aFilterIndex) {
mSelectedType = aFilterIndex;
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::GetFile(nsIFile** aFile) {
MOZ_ASSERT(false, "GetFile is unimplemented; use GetDomFileOrDirectory");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsFilePickerProxy::GetFileURL(nsIURI** aFileURL) {
MOZ_ASSERT(false, "GetFileURL is unimplemented; use GetDomFileOrDirectory");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsFilePickerProxy::GetFiles(nsISimpleEnumerator** aFiles) {
MOZ_ASSERT(false,
"GetFiles is unimplemented; use GetDomFileOrDirectoryEnumerator");
return NS_ERROR_FAILURE;
}
nsresult nsFilePickerProxy::Show(nsIFilePicker::ResultCode* aReturn) {
MOZ_ASSERT(false, "Show is unimplemented; use Open");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFilePickerProxy::Open(nsIFilePickerShownCallback* aCallback) {
mCallback = aCallback;
nsString displayDirectory;
if (mDisplayDirectory) {
mDisplayDirectory->GetPath(displayDirectory);
}
if (!mIPCActive) {
return NS_ERROR_FAILURE;
}
SendOpen(mSelectedType, mAddToRecentDocs, mDefault, mDefaultExtension,
mFilters, mFilterNames, mRawFilters, displayDirectory,
mDisplaySpecialDirectory, mOkButtonLabel, mCapture);
return NS_OK;
}
NS_IMETHODIMP
nsFilePickerProxy::Close() {
SendClose();
return NS_OK;
}
mozilla::ipc::IPCResult nsFilePickerProxy::Recv__delete__(
const MaybeInputData& aData, const nsIFilePicker::ResultCode& aResult) {
auto* inner = mBrowsingContext->GetDOMWindow()
? mBrowsingContext->GetDOMWindow()->GetCurrentInnerWindow()
: nullptr;
if (NS_WARN_IF(!inner)) {
return IPC_OK();
}
if (aData.type() == MaybeInputData::TInputBlobs) {
const nsTArray<IPCBlob>& blobs = aData.get_InputBlobs().blobs();
for (uint32_t i = 0; i < blobs.Length(); ++i) {
RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(blobs[i]);
NS_ENSURE_TRUE(blobImpl, IPC_OK());
if (!blobImpl->IsFile()) {
return IPC_OK();
}
RefPtr<File> file = File::Create(inner->AsGlobal(), blobImpl);
if (NS_WARN_IF(!file)) {
return IPC_OK();
}
OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement();
element->SetAsFile() = file;
}
} else if (aData.type() == MaybeInputData::TInputDirectory) {
nsCOMPtr<nsIFile> file;
const nsAString& path(aData.get_InputDirectory().directoryPath());
nsresult rv = NS_NewLocalFile(path, true, getter_AddRefs(file));
if (NS_WARN_IF(NS_FAILED(rv))) {
return IPC_OK();
}
RefPtr<Directory> directory = Directory::Create(inner->AsGlobal(), file);
MOZ_ASSERT(directory);
OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement();
element->SetAsDirectory() = directory;
}
if (mCallback) {
mCallback->Done(aResult);
mCallback = nullptr;
}
return IPC_OK();
}
NS_IMETHODIMP
nsFilePickerProxy::GetDomFileOrDirectory(nsISupports** aValue) {
*aValue = nullptr;
if (mFilesOrDirectories.IsEmpty()) {
return NS_OK;
}
MOZ_ASSERT(mFilesOrDirectories.Length() == 1);
if (mFilesOrDirectories[0].IsFile()) {
nsCOMPtr<nsISupports> blob = ToSupports(mFilesOrDirectories[0].GetAsFile());
blob.forget(aValue);
return NS_OK;
}
MOZ_ASSERT(mFilesOrDirectories[0].IsDirectory());
RefPtr<Directory> directory = mFilesOrDirectories[0].GetAsDirectory();
directory.forget(aValue);
return NS_OK;
}
namespace {
class SimpleEnumerator final : public nsSimpleEnumerator {
public:
explicit SimpleEnumerator(
const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories)
: mFilesOrDirectories(aFilesOrDirectories.Clone()), mIndex(0) {}
NS_IMETHOD
HasMoreElements(bool* aRetvalue) override {
MOZ_ASSERT(aRetvalue);
*aRetvalue = mIndex < mFilesOrDirectories.Length();
return NS_OK;
}
NS_IMETHOD
GetNext(nsISupports** aValue) override {
NS_ENSURE_TRUE(mIndex < mFilesOrDirectories.Length(), NS_ERROR_FAILURE);
uint32_t index = mIndex++;
if (mFilesOrDirectories[index].IsFile()) {
nsCOMPtr<nsISupports> blob =
ToSupports(mFilesOrDirectories[index].GetAsFile());
blob.forget(aValue);
return NS_OK;
}
MOZ_ASSERT(mFilesOrDirectories[index].IsDirectory());
RefPtr<Directory> directory = mFilesOrDirectories[index].GetAsDirectory();
directory.forget(aValue);
return NS_OK;
}
private:
nsTArray<mozilla::dom::OwningFileOrDirectory> mFilesOrDirectories;
uint32_t mIndex;
};
} // namespace
NS_IMETHODIMP
nsFilePickerProxy::GetDomFileOrDirectoryEnumerator(
nsISimpleEnumerator** aDomfiles) {
RefPtr<SimpleEnumerator> enumerator =
new SimpleEnumerator(mFilesOrDirectories);
enumerator.forget(aDomfiles);
return NS_OK;
}
void nsFilePickerProxy::ActorDestroy(ActorDestroyReason aWhy) {
mIPCActive = false;
if (mCallback) {
mCallback->Done(nsIFilePicker::returnCancel);
mCallback = nullptr;
}
}
nsresult nsFilePickerProxy::ResolveSpecialDirectory(
const nsAString& aSpecialDirectory) {
MOZ_ASSERT(XRE_IsContentProcess());
// Resolving the special-directory name to a path in both the child and parent
// processes is redundant -- and sandboxing may prevent us from doing so in
// the child process, anyway. (See bugs 1357846 and 1838244.)
//
// Unfortunately we can't easily verify that `aSpecialDirectory` is usable or
// even meaningful here, so we just accept anything.
return NS_OK;
}