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