First CL for the about:policy page. This only implements the policy section of the page.

chrome/browser/policy/configuration_policy_reader.cc

Index: chrome/browser/policy/configuration_policy_reader.cc
diff --git a/chrome/browser/policy/configuration_policy_reader.cc b/chrome/browser/policy/configuration_policy_reader.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8d62e3064025388d53619c27814ac14a2c2e628b
--- /dev/null
+++ b/chrome/browser/policy/configuration_policy_reader.cc
@@ -0,0 +1,266 @@
+// Copyright (c) 2011 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/policy/configuration_policy_reader.h"
+
+#include <map>
+#include <vector>
+#include <set>

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

alphabetize

[simo, 2011/08/10 14:28:19]

Done.

+
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/policy/browser_policy_connector.h"
+#include "chrome/browser/policy/configuration_policy_pref_store.h"
+#include "chrome/browser/policy/configuration_policy_store_interface.h"
+
+namespace policy {
+

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

explain what the class is good for.

[simo, 2011/08/10 14:28:19]

Done.

+class ConfigurationPolicyStatusKeeper
+    : public ConfigurationPolicyStoreInterface {
+

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

no newline here

[simo, 2011/08/10 14:28:19]

Done.

+  public:

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

indentation

[simo, 2011/08/10 14:28:19]

Done.

+    explicit ConfigurationPolicyStatusKeeper(

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

explicit only for one-argument constructors.

[simo, 2011/08/10 14:28:19]

Done.

+                                  ConfigurationPolicyProvider* provider,
+                                  bool managed);
+    virtual ~ConfigurationPolicyStatusKeeper();
+
+    // ConfigurationPolicyStoreInterface methods.
+    virtual void Apply(ConfigurationPolicyType policy, base::Value* value);
+
+    // Returns a pointer to a DictionaryValue containing the status information
+    // of the policy |policy|. The caller acquires ownership of the returned
+    // value. Returns NULL if no such policy is stored in this keeper.
+    DictionaryValue* GetPolicyStatus(ConfigurationPolicyType policy) const;
+
+  private:
+    typedef std::map<ConfigurationPolicyType, string16> PolicyNameMapType;
+    typedef ConfigurationPolicyProvider::PolicyDefinitionList
+        PolicyDefinitionList;
+
+    // Mapping from ConfigurationPolicyType to PolicyStatusInfo*.
+    PolicyStatusMap policy_map_;
+
+    // Mapping from ConfigurationPolicyType to policy names.
+    PolicyNameMapType policy_name_map_;
+
+    // The level of the policies stored in this keeper (mandatory or
+    // recommended).
+    PolicyStatusInfo::PolicyLevel policy_level_;
+
+    DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyStatusKeeper);
+};
+
+// ConfigurationPolicyStatusKeeper
+ConfigurationPolicyStatusKeeper::ConfigurationPolicyStatusKeeper(
+    ConfigurationPolicyProvider* provider,
+    bool managed) {
+

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

no newline here.

[simo, 2011/08/10 14:28:19]

Done.

+  const PolicyDefinitionList* policy_definition_list =
+      ConfigurationPolicyPrefStore::GetChromePolicyDefinitionList();
+
+  // Create a mapping from ConfigurationPolicyType's to actual policy names.
+  const PolicyDefinitionList::Entry* entry = policy_definition_list->begin;
+  for ( ; entry != policy_definition_list->end; ++entry)
+    policy_name_map_[entry->policy_type] = ASCIIToUTF16(entry->name);
+
+  policy_level_ = managed ?
+                  PolicyStatusInfo::MANDATORY : PolicyStatusInfo::RECOMMENDED;
+
+  if (!provider->Provide(this))
+    LOG(WARNING) << "Failed to get policy from provider.";
+}
+
+ConfigurationPolicyStatusKeeper::~ConfigurationPolicyStatusKeeper() {
+  policy_map_.Clear();
+  policy_name_map_.clear();
+}
+
+void ConfigurationPolicyStatusKeeper::Apply(
+    ConfigurationPolicyType policy, base::Value* value) {
+
+  PolicyNameMapType::const_iterator entry = policy_name_map_.find(policy);
+
+  // This should never happen.
+  if (entry == policy_name_map_.end()) {
+    LOG(WARNING) << "Received unknown policy from provider.";
+    return;
+  }
+
+  // TODO(simo) actually determine whether the policy is a user or a device one
+  // and whether the policy could be enforced or not once this information
+  // is available.
+  PolicyStatusInfo* info = new PolicyStatusInfo(entry->second,
+                                                PolicyStatusInfo::USER,
+                                                policy_level_,
+                                                value,
+                                                PolicyStatusInfo::ENFORCED,
+                                                string16());
+  policy_map_.Set(policy, info);
+}
+
+DictionaryValue* ConfigurationPolicyStatusKeeper::GetPolicyStatus(
+    ConfigurationPolicyType policy) const {
+  const PolicyStatusInfo* info = policy_map_.Get(policy);
+  return info ? info->GetDictionaryValue() : NULL;
+}
+
+// ConfigurationPolicyReader
+ConfigurationPolicyReader::~ConfigurationPolicyReader() {
+}
+
+bool ConfigurationPolicyReader::IsInitializationComplete() const {
+  return initialization_complete_;
+}
+
+void ConfigurationPolicyReader::OnUpdatePolicy() {
+  Refresh();
+}
+
+void ConfigurationPolicyReader::OnProviderGoingAway() {
+  provider_ = NULL;
+}
+
+// static
+ConfigurationPolicyReader*
+    ConfigurationPolicyReader::CreateManagedPlatformPolicyReader(bool managed) {
+   BrowserPolicyConnector* connector =
+      g_browser_process->browser_policy_connector();
+  return new ConfigurationPolicyReader(
+    connector->GetManagedPlatformProvider(), managed);
+}
+
+// static
+ConfigurationPolicyReader*
+    ConfigurationPolicyReader::CreateManagedCloudPolicyReader(bool managed) {
+  BrowserPolicyConnector* connector =
+      g_browser_process->browser_policy_connector();
+  return new ConfigurationPolicyReader(
+      connector->GetManagedCloudProvider(), managed);
+}
+
+// static
+ConfigurationPolicyReader*
+    ConfigurationPolicyReader::CreateRecommendedPlatformPolicyReader(
+    bool managed) {
+  BrowserPolicyConnector* connector =
+      g_browser_process->browser_policy_connector();
+  return new ConfigurationPolicyReader(
+      connector->GetRecommendedPlatformProvider(), managed);
+}
+
+// static
+ConfigurationPolicyReader*
+    ConfigurationPolicyReader::CreateRecommendedCloudPolicyReader(
+    bool managed) {
+  BrowserPolicyConnector* connector =
+      g_browser_process->browser_policy_connector();
+  return new ConfigurationPolicyReader(
+      connector->GetRecommendedCloudProvider(), managed);
+}
+
+DictionaryValue* ConfigurationPolicyReader::GetPolicyStatus(
+    ConfigurationPolicyType policy) const {
+  return policy_keeper_.get()->GetPolicyStatus(policy);
+}
+
+ConfigurationPolicyReader::ConfigurationPolicyReader(
+    ConfigurationPolicyProvider* provider,
+    bool managed)
+    : provider_(provider),
+      initialization_complete_(false),
+      managed_policies_(managed) {
+  if (provider_) {
+    // Read initial policy.
+    policy_keeper_.reset(
+        new ConfigurationPolicyStatusKeeper(provider, managed));
+    registrar_.Init(provider_, this);
+    initialization_complete_ = provider->IsInitializationComplete();
+  } else {
+    initialization_complete_ = true;
+  }
+}
+
+void ConfigurationPolicyReader::Refresh() {
+    if (!provider_)
+      return;
+
+    // Read policy state into a new keeper and swap out old keeper.
+    scoped_ptr<ConfigurationPolicyStatusKeeper> new_keeper(
+      new ConfigurationPolicyStatusKeeper(provider_, managed_policies_));
+    policy_keeper_.reset(new_keeper.release());
+
+    // TODO(simo) create an observer class which PolicyStatus can implement so
+    // that it can be notified of changes.
+}
+
+// PolicyStatus
+PolicyStatus::PolicyStatus() {
+  managed_platform_.reset(
+      ConfigurationPolicyReader::CreateManagedPlatformPolicyReader(true));
+  managed_cloud_.reset(
+      ConfigurationPolicyReader::CreateManagedCloudPolicyReader(true));
+  recommended_platform_.reset(
+      ConfigurationPolicyReader::CreateRecommendedPlatformPolicyReader(false));
+  recommended_cloud_.reset(
+      ConfigurationPolicyReader::CreateRecommendedCloudPolicyReader(false));
+}
+
+PolicyStatus::~PolicyStatus() {
+}
+
+ListValue* PolicyStatus::GetPolicyStatusList() const {
+  ListValue* result = new ListValue();
+  std::vector<PolicyStatusInfo*> unsent_policies;
+
+  const PolicyDefinitionList* supported_policies =
+      ConfigurationPolicyPrefStore::GetChromePolicyDefinitionList();
+  const PolicyDefinitionList::Entry* policy = supported_policies->begin;
+  for ( ; policy != supported_policies->end; ++policy) {
+    if (!AddPolicyFromReaders(policy->policy_type, result)) {
+      PolicyStatusInfo* info =  new PolicyStatusInfo(
+                                        ASCIIToUTF16(policy->name),
+                                        PolicyStatusInfo::SOURCE_TYPE_UNDEFINED,
+                                        PolicyStatusInfo::LEVEL_UNDEFINED,
+                                        Value::CreateNullValue(),
+                                        PolicyStatusInfo::STATUS_UNDEFINED,
+                                        string16());
+      unsent_policies.push_back(info);
+    }
+  }
+
+  // Add policies that weren't actually sent from providers to list.
+  std::vector<PolicyStatusInfo*>::const_iterator info = unsent_policies.begin();
+  for ( ; info != unsent_policies.end(); ++info)
+    result->Append((*info)->GetDictionaryValue());
+

[simo, 2011/08/09 21:03:02]

I am leaking the PolicyStatusInfo pointers here, will fix.

+  return result;
+}
+
+bool PolicyStatus::AddPolicyFromReaders(
+    ConfigurationPolicyType policy, ListValue* list) const {
+

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

no newline

[simo, 2011/08/10 14:28:19]

Done.

+  DictionaryValue* mp_policy = managed_platform_.get()->GetPolicyStatus(policy);

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

you are leaking all these DictionaryValue pointers here.

[simo, 2011/08/09 21:03:02]

I thought I saw in base/values.h that the pointers added to a ListValue are
deallocated when the ListValue destructor is called? Won't this take care of the
DictionaryValue pointers here?

+  DictionaryValue* mc_policy =
+      managed_cloud_.get()->GetPolicyStatus(policy);
+  DictionaryValue* rp_policy =
+      recommended_platform_.get()->GetPolicyStatus(policy);
+  DictionaryValue* rc_policy =
+      recommended_cloud_.get()->GetPolicyStatus(policy);
+
+  bool added_policy = mp_policy || mc_policy || rp_policy || rc_policy;
+
+  if (mp_policy)
+    list->Append(mp_policy);
+  if (mc_policy)
+    list->Append(mc_policy);
+  if (rp_policy)
+    list->Append(rp_policy);
+  if (rc_policy)
+    list->Append(rc_policy);
+
+  return added_policy;
+}
+
+} // policy

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

namespace policy

[simo, 2011/08/10 14:28:19]

Done.

+

[Mattias Nissler (ping if slow), 2011/08/09 13:20:40]

remove trailing newline

[simo, 2011/08/10 14:28:19]

Done.