chrome/browser/component_updater/component_patcher_operation_out_of_process.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/component_updater/component_patcher_operation_out_of_process.h"
   6
   7 #include <vector>
   8
   9 #include "base/bind.h"
  10 #include "base/callback.h"
  11 #include "base/files/file_path.h"
  12 #include "chrome/common/chrome_utility_messages.h"
  13 #include "chrome/grit/generated_resources.h"
  14 #include "components/component_updater/component_updater_service.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "content/public/browser/utility_process_host.h"
  17 #include "content/public/browser/utility_process_host_client.h"
  18 #include "courgette/courgette.h"
  19 #include "courgette/third_party/bsdiff.h"
  20 #include "ipc/ipc_message_macros.h"
  21 #include "ui/base/l10n/l10n_util.h"
  22
  23 namespace component_updater {
  24
  25 class PatchHost : public content::UtilityProcessHostClient {
  26  public:
  27   PatchHost(base::Callback<void(int result)> callback,
  28             scoped_refptr<base::SequencedTaskRunner> task_runner);
  29
  30   void StartProcess(scoped_ptr<IPC::Message> message);
  31
  32  private:
  33   ~PatchHost() override;
  34
  35   void OnPatchFinished(int result);
  36
  37   // Overrides of content::UtilityProcessHostClient.
  38   bool OnMessageReceived(const IPC::Message& message) override;
  39
  40   void OnProcessCrashed(int exit_code) override;
  41
  42   base::Callback<void(int result)> callback_;
  43   scoped_refptr<base::SequencedTaskRunner> task_runner_;
  44 };
  45
  46 PatchHost::PatchHost(base::Callback<void(int result)> callback,
  47                      scoped_refptr<base::SequencedTaskRunner> task_runner)
  48     : callback_(callback), task_runner_(task_runner) {
  49 }
  50
  51 PatchHost::~PatchHost() {
  52 }
  53
  54 void PatchHost::StartProcess(scoped_ptr<IPC::Message> message) {
  55   // The DeltaUpdateOpPatchHost is not responsible for deleting the
  56   // UtilityProcessHost object.
  57   content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
  58       this, base::MessageLoopProxy::current().get());
  59   host->SetName(l10n_util::GetStringUTF16(
  60       IDS_UTILITY_PROCESS_COMPONENT_PATCHER_NAME));
  61   host->DisableSandbox();
  62   host->Send(message.release());
  63 }
  64
  65 bool PatchHost::OnMessageReceived(const IPC::Message& message) {
  66   bool handled = true;
  67   IPC_BEGIN_MESSAGE_MAP(PatchHost, message)
  68   IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_PatchFile_Finished, OnPatchFinished)
  69   IPC_MESSAGE_UNHANDLED(handled = false)
  70   IPC_END_MESSAGE_MAP()
  71   return handled;
  72 }
  73
  74 void PatchHost::OnPatchFinished(int result) {
  75   if (task_runner_.get()) {
  76     task_runner_->PostTask(FROM_HERE, base::Bind(callback_, result));
  77     task_runner_ = NULL;
  78   }
  79 }
  80
  81 void PatchHost::OnProcessCrashed(int exit_code) {
  82   if (task_runner_.get()) {
  83     task_runner_->PostTask(FROM_HERE, base::Bind(callback_, -1));
  84     task_runner_ = NULL;
  85   }
  86 }
  87
  88 ChromeOutOfProcessPatcher::ChromeOutOfProcessPatcher() {
  89 }
  90
  91 ChromeOutOfProcessPatcher::~ChromeOutOfProcessPatcher() {
  92 }
  93
  94 void ChromeOutOfProcessPatcher::Patch(
  95     const std::string& operation,
  96     scoped_refptr<base::SequencedTaskRunner> task_runner,
  97     const base::FilePath& input_abs_path,
  98     const base::FilePath& patch_abs_path,
  99     const base::FilePath& output_abs_path,
 100     base::Callback<void(int result)> callback) {
 101   host_ = new PatchHost(callback, task_runner);
 102   scoped_ptr<IPC::Message> patch_message;
 103   if (operation == update_client::kBsdiff) {
 104     patch_message.reset(new ChromeUtilityMsg_PatchFileBsdiff(
 105         input_abs_path, patch_abs_path, output_abs_path));
 106   } else if (operation == update_client::kCourgette) {
 107     patch_message.reset(new ChromeUtilityMsg_PatchFileCourgette(
 108         input_abs_path, patch_abs_path, output_abs_path));
 109   } else {
 110     NOTREACHED();
 111   }
 112
 113   content::BrowserThread::PostTask(
 114       content::BrowserThread::IO,
 115       FROM_HERE,
 116       base::Bind(
 117           &PatchHost::StartProcess, host_, base::Passed(&patch_message)));
 118 }
 119
 120 }  // namespace component_updater