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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/remote_open_url/remote_open_url_client.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/notreached.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "net/base/filename_util.h"
#include "remoting/base/logging.h"
#include "remoting/host/chromoting_host_services_client.h"
#include "remoting/host/mojom/chromoting_host_services.mojom.h"
#include "remoting/host/mojom/remote_url_opener.mojom.h"
#if BUILDFLAG(IS_LINUX)
#include "remoting/host/remote_open_url/remote_open_url_client_delegate_linux.h"
#elif BUILDFLAG(IS_WIN)
#include "remoting/host/remote_open_url/remote_open_url_client_delegate_win.h"
#endif
namespace remoting {
namespace {
constexpr base::TimeDelta kRequestTimeout = base::Seconds(5);
std::unique_ptr<RemoteOpenUrlClient::Delegate> CreateDelegate() {
#if BUILDFLAG(IS_LINUX)
return std::make_unique<RemoteOpenUrlClientDelegateLinux>();
#elif BUILDFLAG(IS_WIN)
return std::make_unique<RemoteOpenUrlClientDelegateWin>();
#else
NOTREACHED();
#endif
}
} // namespace
RemoteOpenUrlClient::RemoteOpenUrlClient()
: RemoteOpenUrlClient(CreateDelegate(),
std::make_unique<ChromotingHostServicesClient>(),
kRequestTimeout) {}
RemoteOpenUrlClient::RemoteOpenUrlClient(
std::unique_ptr<Delegate> delegate,
std::unique_ptr<ChromotingHostServicesProvider> api_provider,
base::TimeDelta request_timeout)
: delegate_(std::move(delegate)),
api_provider_(std::move(api_provider)),
request_timeout_(request_timeout) {}
RemoteOpenUrlClient::~RemoteOpenUrlClient() {
DCHECK(!done_);
}
void RemoteOpenUrlClient::OpenFallbackBrowser() {
DCHECK(url_.is_empty());
delegate_->OpenUrlOnFallbackBrowser(url_);
}
void RemoteOpenUrlClient::Open(const base::CommandLine::StringType& arg,
base::OnceClosure done) {
DCHECK(url_.is_empty());
DCHECK(!done_);
DCHECK(!remote_);
done_ = std::move(done);
#if BUILDFLAG(IS_WIN)
GURL url(base::WideToUTF8(arg));
#else
GURL url(arg);
#endif
if (!url.is_valid()) {
// It has been observed that in some Linux environments, a file:// URL might
// be converted back to a file path when it's being passed to
// remote_open_url, so we try to convert it back to a file:// URL and open
// it with the fallback browser.
base::FilePath file_path(arg);
if (file_path.IsAbsolute()) {
HOST_LOG << "Argument appears to be an absolute file path. Will convert "
"it to a file:// URL.";
url = net::FilePathToFileURL(file_path);
}
}
if (!url.is_valid()) {
LOG(ERROR) << "Invalid URL";
OnOpenUrlResponse(mojom::OpenUrlResult::FAILURE);
return;
}
url_ = url;
if (!url_.SchemeIsHTTPOrHTTPS() && !url_.SchemeIs("mailto")) {
HOST_LOG << "Unrecognized scheme. Failing back to the previous default "
<< "browser...";
OnOpenUrlResponse(mojom::OpenUrlResult::LOCAL_FALLBACK);
return;
}
auto* api = api_provider_->GetSessionServices();
if (!api) {
HOST_LOG << "Can't make IPC connection. The host is probably not running.";
OnOpenUrlResponse(mojom::OpenUrlResult::LOCAL_FALLBACK);
return;
}
api->BindRemoteUrlOpener(remote_.BindNewPipeAndPassReceiver());
remote_.set_disconnect_handler(base::BindOnce(
&RemoteOpenUrlClient::OnIpcDisconnected, base::Unretained(this)));
timeout_timer_.Start(FROM_HERE, request_timeout_, this,
&RemoteOpenUrlClient::OnRequestTimeout);
remote_->OpenUrl(url_, base::BindOnce(&RemoteOpenUrlClient::OnOpenUrlResponse,
base::Unretained(this)));
}
void RemoteOpenUrlClient::OnOpenUrlResponse(mojom::OpenUrlResult result) {
timeout_timer_.Stop();
switch (result) {
case mojom::OpenUrlResult::SUCCESS:
HOST_LOG << "The URL is successfully opened on the client.";
break;
case mojom::OpenUrlResult::FAILURE: {
delegate_->ShowOpenUrlError(url_);
break;
}
case mojom::OpenUrlResult::LOCAL_FALLBACK:
delegate_->OpenUrlOnFallbackBrowser(url_);
break;
default:
NOTREACHED();
}
std::move(done_).Run();
remote_.reset();
}
void RemoteOpenUrlClient::OnRequestTimeout() {
LOG(ERROR) << "Timed out waiting for OpenUrl response.";
OnOpenUrlResponse(mojom::OpenUrlResult::LOCAL_FALLBACK);
}
void RemoteOpenUrlClient::OnIpcDisconnected() {
LOG(WARNING) << "IPC disconnected.";
// This generally happens either because the session is not remoted, or the
// client hasn't enabled URL forwarding, so we fallback locally.
OnOpenUrlResponse(mojom::OpenUrlResult::LOCAL_FALLBACK);
}
} // namespace remoting
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