Universial component install for chrome os.

chrome/browser/component_updater/cros_component_installer.cc

+// Copyright 2017 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/component_updater/cros_component_installer.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/component_updater/component_installer_errors.h"
+#include "components/component_updater/component_updater_paths.h"
+#include "content/public/browser/browser_thread.h"
+
+#if defined(OS_CHROMEOS)
+#include "chromeos/dbus/dbus_method_call_status.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/image_loader_client.h"
+#endif  // defined(OS_CHROMEOS)
+
+using content::BrowserThread;
+
+namespace component_updater {
+
+#if defined(OS_CHROMEOS)
+void LogRegistrationResult(chromeos::DBusMethodCallStatus call_status,
+                           bool result) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  if (call_status != chromeos::DBUS_METHOD_CALL_SUCCESS) {
+    DVLOG(1) << "Call to imageloader service failed.";
+    return;
+  }
+  if (!result) {
+    DVLOG(1) << "Component registration failed";
+    return;
+  }
+}
+void ImageLoaderRegistration(const std::string& version,
+                             const base::FilePath& install_dir,
+                             const std::string& name) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  chromeos::ImageLoaderClient* loader =
+      chromeos::DBusThreadManager::Get()->GetImageLoaderClient();
+
+  if (loader) {
+    loader->RegisterComponent(name, version, install_dir.value(),
+                              base::Bind(&LogRegistrationResult));
+  } else {
+    DVLOG(1) << "Failed to get ImageLoaderClient object.";
+  }
+}
+ComponentConfig::ComponentConfig(const std::string& name,
+                                 const std::string& dir,
+                                 const std::string& sha2hashstr)
+    : name(name), dir(dir), sha2hashstr(sha2hashstr) {}
+ComponentConfig::~ComponentConfig() {}
+
+CrOSComponentInstallerTraits::CrOSComponentInstallerTraits(
+    const ComponentConfig& config)
+    : dir_name(config.dir), name(config.name) {
+  if (config.sha2hashstr.length() != 64)
+    return;
+  auto strstream = config.sha2hashstr;
+  for (auto& cell : kSha2Hash_) {
+    cell = stoul(strstream.substr(0, 2), nullptr, 16);
+    strstream.erase(0, 2);
+  }
+}
+
+bool CrOSComponentInstallerTraits::SupportsGroupPolicyEnabledComponentUpdates()
+    const {
+  return true;
+}
+
+bool CrOSComponentInstallerTraits::RequiresNetworkEncryption() const {
+  return true;
+}
+
+update_client::CrxInstaller::Result
+CrOSComponentInstallerTraits::OnCustomInstall(
+    const base::DictionaryValue& manifest,
+    const base::FilePath& install_dir) {
+  DVLOG(1) << "[CrOSComponentInstallerTraits::OnCustomInstall]";
+  std::string version;
+  if (!manifest.GetString("version", &version)) {
+    return ToInstallerResult(update_client::InstallError::GENERIC_ERROR);
+  }
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&ImageLoaderRegistration, version, install_dir, name));
+  return update_client::CrxInstaller::Result(update_client::InstallError::NONE);
+}
+
+void CrOSComponentInstallerTraits::ComponentReady(
+    const base::Version& version,
+    const base::FilePath& path,
+    std::unique_ptr<base::DictionaryValue> manifest) {}
+
+bool CrOSComponentInstallerTraits::VerifyInstallation(
+    const base::DictionaryValue& manifest,
+    const base::FilePath& install_dir) const {
+  return true;
+}
+
+base::FilePath CrOSComponentInstallerTraits::GetRelativeInstallDir() const {
+  return base::FilePath(dir_name);
+}
+
+void CrOSComponentInstallerTraits::GetHash(std::vector<uint8_t>* hash) const {
+  hash->assign(kSha2Hash_, kSha2Hash_ + arraysize(kSha2Hash_));
+}
+
+std::string CrOSComponentInstallerTraits::GetName() const {
+  return name;
+}
+
+update_client::InstallerAttributes
+CrOSComponentInstallerTraits::GetInstallerAttributes() const {
+  return update_client::InstallerAttributes();
+}
+
+std::vector<std::string> CrOSComponentInstallerTraits::GetMimeTypes() const {
+  std::vector<std::string> mime_types;
+  return mime_types;
+}
+
+void RegisterCrOSComponentInternal(ComponentUpdateService* cus,
+                                   const ComponentConfig& config) {
+  std::unique_ptr<ComponentInstallerTraits> traits(
+      new CrOSComponentInstallerTraits(config));
+  // |cus| will take ownership of |installer| during
+  // installer->Register(cus).
+  DefaultComponentInstaller* installer =
+      new DefaultComponentInstaller(std::move(traits));
+  installer->Register(cus, base::Closure());
+}
+
+bool RegisterCrOSComponentInternal(ComponentUpdateService* cus,
+                                   const std::string& name) {
+  if (name.empty()) {
+    DVLOG(1) << "[RegisterCrOSComponents] name is empty.";
+    return false;
+  }
+  const std::map<std::string, std::map<std::string, std::string>> components = {
+      {"escpr",
+       {{"dir", "epson-inkjet-printer-escpr"},
+        {"sha2hashstr",
+         "1913a5e0a6cad30b6f03e176177e0d7ed62c5d6700a9c66da556d7c3f5d6a47e"}}}};
+  const auto it = components.find(name);
+  if (it == components.end()) {
+    DVLOG(1) << "[RegisterCrOSComponents] component " << name
+             << " is not in configuration.";
+    return false;
+  }
+  ComponentConfig config(it->first, it->second.find("dir")->second,
+                         it->second.find("sha2hashstr")->second);
+  RegisterCrOSComponentInternal(cus, config);
+  return true;
+}
+
+#endif  // defined(OS_CHROMEOS)
+
+bool RegisterCrOSComponent(ComponentUpdateService* cus,
+                           const std::string& name) {
+#if defined(OS_CHROMEOS)
+  return RegisterCrOSComponentInternal(cus, name);
+#else
+  return false;
+#endif  // defined(OS_CHROMEOS)
+}
+
+}  // namespace component_updater