Using PolicyServiceWatcher instead of PolicyWatcherLinux/Win/Mac.

components/policy/core/common/policy_loader_mac.cc

-// Copyright (c) 2012 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 "components/policy/core/common/policy_loader_mac.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/callback.h"
-#include "base/files/file_util.h"
-#include "base/mac/foundation_util.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/sequenced_task_runner.h"
-#include "base/strings/sys_string_conversions.h"
-#include "base/values.h"
-#include "components/policy/core/common/external_data_fetcher.h"
-#include "components/policy/core/common/mac_util.h"
-#include "components/policy/core/common/policy_bundle.h"
-#include "components/policy/core/common/policy_load_status.h"
-#include "components/policy/core/common/policy_map.h"
-#include "components/policy/core/common/preferences_mac.h"
-#include "components/policy/core/common/schema.h"
-#include "components/policy/core/common/schema_map.h"
-
-using base::ScopedCFTypeRef;
-
-namespace policy {
-
-PolicyLoaderMac::PolicyLoaderMac(
-    scoped_refptr<base::SequencedTaskRunner> task_runner,
-    const base::FilePath& managed_policy_path,
-    MacPreferences* preferences)
-    : AsyncPolicyLoader(task_runner),
-      preferences_(preferences),
-      managed_policy_path_(managed_policy_path) {}
-
-PolicyLoaderMac::~PolicyLoaderMac() {}
-
-void PolicyLoaderMac::InitOnBackgroundThread() {
-  if (!managed_policy_path_.empty()) {
-    watcher_.Watch(
-        managed_policy_path_, false,
-        base::Bind(&PolicyLoaderMac::OnFileUpdated, base::Unretained(this)));
-  }
-}
-
-scoped_ptr<PolicyBundle> PolicyLoaderMac::Load() {
-  preferences_->AppSynchronize(kCFPreferencesCurrentApplication);
-  scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
-
-  // Load Chrome's policy.
-  PolicyMap& chrome_policy =
-      bundle->Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()));
-
-  PolicyLoadStatusSample status;
-  bool policy_present = false;
-  const Schema* schema =
-      schema_map()->GetSchema(PolicyNamespace(POLICY_DOMAIN_CHROME, ""));
-  for (Schema::Iterator it = schema->GetPropertiesIterator();
-       !it.IsAtEnd(); it.Advance()) {
-    base::ScopedCFTypeRef<CFStringRef> name(
-        base::SysUTF8ToCFStringRef(it.key()));
-    base::ScopedCFTypeRef<CFPropertyListRef> value(
-        preferences_->CopyAppValue(name, kCFPreferencesCurrentApplication));
-    if (!value.get())
-      continue;
-    policy_present = true;
-    bool forced =
-        preferences_->AppValueIsForced(name, kCFPreferencesCurrentApplication);
-    PolicyLevel level = forced ? POLICY_LEVEL_MANDATORY :
-                                 POLICY_LEVEL_RECOMMENDED;
-    // TODO(joaodasilva): figure the policy scope.
-    scoped_ptr<base::Value> policy = PropertyToValue(value);
-    if (policy) {
-      chrome_policy.Set(
-          it.key(), level, POLICY_SCOPE_USER, policy.release(), NULL);
-    } else {
-      status.Add(POLICY_LOAD_STATUS_PARSE_ERROR);
-    }
-  }
-
-  if (!policy_present)
-    status.Add(POLICY_LOAD_STATUS_NO_POLICY);
-
-  // Load policy for the registered components.
-  LoadPolicyForDomain(POLICY_DOMAIN_EXTENSIONS, "extensions", bundle.get());
-
-  return bundle.Pass();
-}
-
-base::Time PolicyLoaderMac::LastModificationTime() {
-  base::File::Info file_info;
-  if (!base::GetFileInfo(managed_policy_path_, &file_info) ||
-      file_info.is_directory) {
-    return base::Time();
-  }
-
-  return file_info.last_modified;
-}
-
-void PolicyLoaderMac::LoadPolicyForDomain(
-    PolicyDomain domain,
-    const std::string& domain_name,
-    PolicyBundle* bundle) {
-  std::string id_prefix(base::mac::BaseBundleID());
-  id_prefix.append(".").append(domain_name).append(".");
-
-  const ComponentMap* components = schema_map()->GetComponents(domain);
-  if (!components)
-    return;
-
-  for (ComponentMap::const_iterator it = components->begin();
-       it != components->end(); ++it) {
-    PolicyMap policy;
-    LoadPolicyForComponent(id_prefix + it->first, it->second, &policy);
-    if (!policy.empty())
-      bundle->Get(PolicyNamespace(domain, it->first)).Swap(&policy);
-  }
-}
-
-void PolicyLoaderMac::LoadPolicyForComponent(
-    const std::string& bundle_id_string,
-    const Schema& schema,
-    PolicyMap* policy) {
-  // TODO(joaodasilva): Extensions may be registered in a ComponentMap
-  // without a schema, to allow a graceful update of the Legacy Browser Support
-  // extension on Windows. Remove this check once that support is removed.
-  if (!schema.valid())
-    return;
-
-  base::ScopedCFTypeRef<CFStringRef> bundle_id(
-      base::SysUTF8ToCFStringRef(bundle_id_string));
-  preferences_->AppSynchronize(bundle_id);
-
-  for (Schema::Iterator it = schema.GetPropertiesIterator();
-       !it.IsAtEnd(); it.Advance()) {
-    base::ScopedCFTypeRef<CFStringRef> pref_name(
-        base::SysUTF8ToCFStringRef(it.key()));
-    base::ScopedCFTypeRef<CFPropertyListRef> value(
-        preferences_->CopyAppValue(pref_name, bundle_id));
-    if (!value.get())
-      continue;
-    bool forced =
-        preferences_->AppValueIsForced(pref_name, bundle_id);
-    PolicyLevel level = forced ? POLICY_LEVEL_MANDATORY :
-                                 POLICY_LEVEL_RECOMMENDED;
-    scoped_ptr<base::Value> policy_value = PropertyToValue(value);
-    if (policy_value) {
-      policy->Set(it.key(), level, POLICY_SCOPE_USER,
-                  policy_value.release(), NULL);
-    }
-  }
-}
-
-void PolicyLoaderMac::OnFileUpdated(const base::FilePath& path, bool error) {
-  if (!error)
-    Reload(false);
-}
-
-}  // namespace policy