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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac.h"
#include <utility>
#include "base/bind.h"
#include "chrome/common/chrome_utility_messages.h"
#include "chrome/common/safe_browsing/zip_analyzer_results.h"
#include "chrome/grit/generated_resources.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/render_process_host.h"
#include "ipc/ipc_message_macros.h"
#include "ipc/ipc_platform_file.h"
#include "ui/base/l10n/l10n_util.h"
using content::BrowserThread;
namespace safe_browsing {
SandboxedDMGAnalyzer::SandboxedDMGAnalyzer(const base::FilePath& dmg_file,
const ResultsCallback& callback)
: file_path_(dmg_file), callback_(callback), callback_called_(false) {
}
SandboxedDMGAnalyzer::~SandboxedDMGAnalyzer() {}
void SandboxedDMGAnalyzer::Start() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!BrowserThread::GetBlockingPool()->PostWorkerTaskWithShutdownBehavior(
FROM_HERE, base::Bind(&SandboxedDMGAnalyzer::OpenDMGFile, this),
base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN)) {
NOTREACHED();
}
}
void SandboxedDMGAnalyzer::OpenDMGFile() {
DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
file_.Initialize(file_path_, base::File::FLAG_OPEN | base::File::FLAG_READ);
if (!file_.IsValid()) {
DLOG(ERROR) << "Could not open DMG file at path " << file_path_.value();
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SandboxedDMGAnalyzer::OnAnalysisFinished, this,
zip_analyzer::Results()));
return;
}
BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
base::Bind(&SandboxedDMGAnalyzer::StartAnalysis,
this));
}
void SandboxedDMGAnalyzer::StartAnalysis() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
utility_process_host_ =
content::UtilityProcessHost::Create(this,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO))
->AsWeakPtr();
utility_process_host_->SetName(l10n_util::GetStringUTF16(
IDS_UTILITY_PROCESS_SAFE_BROWSING_ZIP_FILE_ANALYZER_NAME));
utility_process_host_->Send(new ChromeUtilityMsg_StartupPing);
}
void SandboxedDMGAnalyzer::OnProcessCrashed(int exit_code) {
OnAnalysisFinished(zip_analyzer::Results());
}
void SandboxedDMGAnalyzer::OnProcessLaunchFailed() {
OnAnalysisFinished(zip_analyzer::Results());
}
bool SandboxedDMGAnalyzer::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(SandboxedDMGAnalyzer, message)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ProcessStarted,
OnUtilityProcessStarted)
IPC_MESSAGE_HANDLER(
ChromeUtilityHostMsg_AnalyzeDmgFileForDownloadProtection_Finished,
OnAnalysisFinished)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void SandboxedDMGAnalyzer::OnUtilityProcessStarted() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
base::ProcessHandle utility_process =
content::RenderProcessHost::run_renderer_in_process() ?
base::GetCurrentProcessHandle() :
utility_process_host_->GetData().handle;
if (utility_process == base::kNullProcessHandle) {
DLOG(ERROR) << "Child process handle is null";
}
utility_process_host_->Send(
new ChromeUtilityMsg_AnalyzeDmgFileForDownloadProtection(
IPC::TakeFileHandleForProcess(std::move(file_), utility_process)));
}
void SandboxedDMGAnalyzer::OnAnalysisFinished(
const zip_analyzer::Results& results) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (callback_called_)
return;
callback_called_ = true;
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(callback_, results));
}
} // namespace safe_browsing
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