This moves the ONC parsing code into chromeos/network/onc

chrome/browser/chromeos/network_settings/onc_merger.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 "chrome/browser/chromeos/network_settings/onc_merger.h"
-
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/values.h"
-#include "chrome/browser/chromeos/cros/onc_constants.h"
-
-namespace chromeos {
-namespace onc {
-namespace {
-
-typedef scoped_ptr<base::DictionaryValue> DictionaryPtr;
-
-// Inserts |true| at every field name in |result| that is recommended in policy.
-void MarkRecommendedFieldnames(const base::DictionaryValue& policy,
-                              base::DictionaryValue* result) {
-  const ListValue* recommended_value = NULL;
-  if (!policy.GetListWithoutPathExpansion(kRecommended, &recommended_value))
-    return;
-  for (ListValue::const_iterator it = recommended_value->begin();
-       it != recommended_value->end(); ++it) {
-    std::string entry;
-    if ((*it)->GetAsString(&entry))
-      result->SetBooleanWithoutPathExpansion(entry, true);
-  }
-}
-
-// Split the given |policy| into its recommended and mandatory settings. The
-// dictionary |result_editable| contains a |true| value at each path that is
-// editable by the user.
-void SplitPolicy(const base::DictionaryValue& policy,
-                 DictionaryPtr* result_recommended,
-                 DictionaryPtr* result_editable,
-                 DictionaryPtr* result_mandatory) {
-  result_recommended->reset(new base::DictionaryValue);
-  result_editable->reset(new base::DictionaryValue);
-  result_mandatory->reset(new base::DictionaryValue);
-
-  MarkRecommendedFieldnames(policy, result_editable->get());
-
-  // Distribute policy's entries into |result_recommended| and |result_editable|
-  // according to |result_editable| and recurse into nested dictionaries.
-  for (base::DictionaryValue::Iterator it(policy); it.HasNext(); it.Advance()) {
-    if (it.key() == kRecommended)
-      continue;
-
-    const base::DictionaryValue* child_policy = NULL;
-    if (it.value().GetAsDictionary(&child_policy)) {
-      DictionaryPtr child_recommended, child_editable, child_mandatory;
-      SplitPolicy(*child_policy, &child_recommended, &child_editable,
-                  &child_mandatory);
-
-      (*result_recommended)->SetWithoutPathExpansion(
-          it.key(), child_recommended.release());
-      (*result_editable)->SetWithoutPathExpansion(
-          it.key(), child_editable.release());
-      (*result_mandatory)->SetWithoutPathExpansion(
-          it.key(), child_mandatory.release());
-    } else {
-      bool is_recommended = false;
-      (*result_editable)->GetBooleanWithoutPathExpansion(it.key(),
-                                                         &is_recommended);
-      if (is_recommended) {
-        (*result_recommended)->SetWithoutPathExpansion(
-            it.key(), it.value().DeepCopy());
-      } else {
-        (*result_mandatory)->SetWithoutPathExpansion(
-            it.key(), it.value().DeepCopy());
-      }
-    }
-  }
-}
-
-// Copy values from |user| at paths that are assigned true in |editable|. The
-// values are copied to a new dictionary which is returned.
-DictionaryPtr DeepCopyIf(
-    const base::DictionaryValue& user,
-    const base::DictionaryValue& editable) {
-  DictionaryPtr result(new base::DictionaryValue);
-
-  for (base::DictionaryValue::Iterator it(user); it.HasNext(); it.Advance()) {
-    const base::DictionaryValue* user_child = NULL;
-    if (it.value().GetAsDictionary(&user_child)) {
-      const base::DictionaryValue* editable_child = NULL;
-      if (editable.GetDictionaryWithoutPathExpansion(it.key(),
-                                                     &editable_child)) {
-        result->SetWithoutPathExpansion(
-            it.key(), DeepCopyIf(*user_child, *editable_child).release());
-      }
-    } else {
-      bool editable_flag;
-      if (editable.GetBooleanWithoutPathExpansion(it.key(), &editable_flag) &&
-          editable_flag) {
-        result->SetWithoutPathExpansion(it.key(), it.value().DeepCopy());
-      }
-    }
-  }
-
-  return result.Pass();
-}
-
-void MergeDictionaryIfNotNULL(const base::DictionaryValue* update,
-                              base::DictionaryValue* result) {
-  if (update != NULL)
-    result->MergeDictionary(update);
-}
-
-}  // namespace
-
-DictionaryPtr MergeSettingsWithPolicies(
-    const base::DictionaryValue* user_policy,
-    const base::DictionaryValue* device_policy,
-    const base::DictionaryValue* user_onc,
-    const base::DictionaryValue* shared_onc) {
-  DictionaryPtr user_mandatory;
-  DictionaryPtr user_editable;
-  DictionaryPtr user_recommended;
-  if (user_policy != NULL) {
-    SplitPolicy(*user_policy, &user_recommended, &user_editable,
-                &user_mandatory);
-  } else {
-    user_mandatory.reset(new base::DictionaryValue);
-    user_recommended.reset(new base::DictionaryValue);
-    // 'user_editable == NULL' means everything is editable
-  }
-
-  DictionaryPtr device_mandatory;
-  DictionaryPtr device_editable;
-  DictionaryPtr device_recommended;
-  if (device_policy != NULL) {
-    SplitPolicy(*device_policy, &device_recommended, &device_editable,
-                &device_mandatory);
-  } else {
-    device_mandatory.reset(new base::DictionaryValue);
-    device_recommended.reset(new base::DictionaryValue);
-    // 'device_editable == NULL' means everything is editable
-  }
-
-  DictionaryPtr reduced_user_onc(
-      user_onc != NULL ? user_onc->DeepCopy() : new base::DictionaryValue);
-  if (user_editable.get() != NULL)
-    reduced_user_onc = DeepCopyIf(*reduced_user_onc, *user_editable);
-  if (device_editable.get() != NULL)
-    reduced_user_onc = DeepCopyIf(*reduced_user_onc, *device_editable);
-
-  DictionaryPtr reduced_shared_onc(
-      shared_onc != NULL ? shared_onc->DeepCopy() : new base::DictionaryValue);
-  if (user_editable.get() != NULL)
-    reduced_shared_onc = DeepCopyIf(*reduced_shared_onc, *user_editable);
-  if (device_editable.get() != NULL)
-    reduced_shared_onc = DeepCopyIf(*reduced_shared_onc, *device_editable);
-
-  // Merge the settings layers according to their priority: From lowest to
-  // highest priority.
-  DictionaryPtr result(new base::DictionaryValue);
-  MergeDictionaryIfNotNULL(device_recommended.get(), result.get());
-  MergeDictionaryIfNotNULL(user_recommended.get(), result.get());
-  MergeDictionaryIfNotNULL(reduced_shared_onc.get(), result.get());
-  MergeDictionaryIfNotNULL(reduced_user_onc.get(), result.get());
-  MergeDictionaryIfNotNULL(device_mandatory.get(), result.get());
-  MergeDictionaryIfNotNULL(user_mandatory.get(), result.get());
-
-  return result.Pass();
-}
-
-}  // namespace onc
-}  // namespace chromeos