chrome/browser/extensions/startup_helper.cc

   1 // Copyright (c) 2012 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/extensions/startup_helper.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/command_line.h"
  10 #include "base/files/file_path.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/run_loop.h"
  13 #include "base/single_thread_task_runner.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chrome/common/extensions/chrome_extensions_client.h"
  18 #include "content/public/browser/browser_thread.h"
  19 #include "extensions/browser/sandboxed_unpacker.h"
  20 #include "extensions/common/extension.h"
  21
  22 using content::BrowserThread;
  23
  24 namespace extensions {
  25
  26 namespace {
  27
  28 void PrintPackExtensionMessage(const std::string& message) {
  29   VLOG(1) << message;
  30 }
  31
  32 }  // namespace
  33
  34 StartupHelper::StartupHelper() : pack_job_succeeded_(false) {
  35   ExtensionsClient::Set(ChromeExtensionsClient::GetInstance());
  36 }
  37
  38 void StartupHelper::OnPackSuccess(
  39     const base::FilePath& crx_path,
  40     const base::FilePath& output_private_key_path) {
  41   pack_job_succeeded_ = true;
  42   PrintPackExtensionMessage(
  43       base::UTF16ToUTF8(
  44           PackExtensionJob::StandardSuccessMessage(crx_path,
  45                                                    output_private_key_path)));
  46 }
  47
  48 void StartupHelper::OnPackFailure(const std::string& error_message,
  49                                   ExtensionCreator::ErrorType type) {
  50   PrintPackExtensionMessage(error_message);
  51 }
  52
  53 bool StartupHelper::PackExtension(const base::CommandLine& cmd_line) {
  54   if (!cmd_line.HasSwitch(switches::kPackExtension))
  55     return false;
  56
  57   // Input Paths.
  58   base::FilePath src_dir =
  59       cmd_line.GetSwitchValuePath(switches::kPackExtension);
  60   base::FilePath private_key_path;
  61   if (cmd_line.HasSwitch(switches::kPackExtensionKey)) {
  62     private_key_path = cmd_line.GetSwitchValuePath(switches::kPackExtensionKey);
  63   }
  64
  65   // Launch a job to perform the packing on the file thread.  Ignore warnings
  66   // from the packing process. (e.g. Overwrite any existing crx file.)
  67   pack_job_ = new PackExtensionJob(this, src_dir, private_key_path,
  68                                    ExtensionCreator::kOverwriteCRX);
  69   pack_job_->set_asynchronous(false);
  70   pack_job_->Start();
  71
  72   return pack_job_succeeded_;
  73 }
  74
  75 namespace {
  76
  77 class ValidateCrxHelper : public SandboxedUnpackerClient {
  78  public:
  79   ValidateCrxHelper(const CRXFileInfo& file,
  80                     const base::FilePath& temp_dir,
  81                     base::RunLoop* run_loop)
  82       : crx_file_(file),
  83         temp_dir_(temp_dir),
  84         run_loop_(run_loop),
  85         finished_(false),
  86         success_(false) {}
  87
  88   bool finished() { return finished_; }
  89   bool success() { return success_; }
  90   const base::string16& error() { return error_; }
  91
  92   void Start() {
  93     BrowserThread::PostTask(BrowserThread::FILE,
  94                             FROM_HERE,
  95                             base::Bind(&ValidateCrxHelper::StartOnFileThread,
  96                                        this));
  97   }
  98
  99  protected:
 100   ~ValidateCrxHelper() override {}
 101
 102   void OnUnpackSuccess(const base::FilePath& temp_dir,
 103                        const base::FilePath& extension_root,
 104                        const base::DictionaryValue* original_manifest,
 105                        const Extension* extension,
 106                        const SkBitmap& install_icon) override {
 107     finished_ = true;
 108     success_ = true;
 109     BrowserThread::PostTask(BrowserThread::UI,
 110                             FROM_HERE,
 111                             base::Bind(&ValidateCrxHelper::FinishOnUIThread,
 112                                        this));
 113   }
 114
 115   void OnUnpackFailure(const CrxInstallError& error) override {
 116     finished_ = true;
 117     success_ = false;
 118     error_ = error.message();
 119     BrowserThread::PostTask(BrowserThread::UI,
 120                             FROM_HERE,
 121                             base::Bind(&ValidateCrxHelper::FinishOnUIThread,
 122                                        this));
 123   }
 124
 125   void FinishOnUIThread() {
 126     CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 127     if (run_loop_->running())
 128       run_loop_->Quit();
 129   }
 130
 131   void StartOnFileThread() {
 132     CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 133     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner =
 134         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE);
 135
 136     scoped_refptr<SandboxedUnpacker> unpacker(new SandboxedUnpacker(
 137         Manifest::INTERNAL, 0, /* no special creation flags */
 138         temp_dir_, file_task_runner.get(), this));
 139     unpacker->StartWithCrx(crx_file_);
 140   }
 141
 142   // The file being validated.
 143   const CRXFileInfo& crx_file_;
 144
 145   // The temporary directory where the sandboxed unpacker will do work.
 146   const base::FilePath& temp_dir_;
 147
 148   // Unowned pointer to a runloop, so our consumer can wait for us to finish.
 149   base::RunLoop* run_loop_;
 150
 151   // Whether we're finished unpacking;
 152   bool finished_;
 153
 154   // Whether the unpacking was successful.
 155   bool success_;
 156
 157   // If the unpacking wasn't successful, this contains an error message.
 158   base::string16 error_;
 159 };
 160
 161 }  // namespace
 162
 163 bool StartupHelper::ValidateCrx(const base::CommandLine& cmd_line,
 164                                 std::string* error) {
 165   CHECK(error);
 166   base::FilePath path = cmd_line.GetSwitchValuePath(switches::kValidateCrx);
 167   if (path.empty()) {
 168     *error = base::StringPrintf("Empty path passed for %s",
 169                                 switches::kValidateCrx);
 170     return false;
 171   }
 172   base::ScopedTempDir temp_dir;
 173
 174   if (!temp_dir.CreateUniqueTempDir()) {
 175     *error = std::string("Failed to create temp dir");
 176     return false;
 177   }
 178
 179   base::RunLoop run_loop;
 180   CRXFileInfo file(path);
 181   scoped_refptr<ValidateCrxHelper> helper(
 182       new ValidateCrxHelper(file, temp_dir.path(), &run_loop));
 183   helper->Start();
 184   if (!helper->finished())
 185     run_loop.Run();
 186
 187   bool success = helper->success();
 188   if (!success)
 189     *error = base::UTF16ToUTF8(helper->error());
 190   return success;
 191 }
 192
 193 StartupHelper::~StartupHelper() {
 194   if (pack_job_.get())
 195     pack_job_->ClearClient();
 196 }
 197
 198 }  // namespace extensions