Create interface to manage manual exceptions.

chrome/browser/ui/webui/options/managed_user_settings_handler.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/ui/webui/options/managed_user_settings_handler.h"
 
+#include <vector>
+
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/first_run/first_run.h"
+#include "chrome/browser/managed_mode/managed_user_service.h"
+#include "chrome/browser/managed_mode/managed_user_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_ui.h"
+#include "googleurl/src/url_canon.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/google_chrome_strings.h"
 #include "grit/locale_settings.h"
 
 using content::UserMetricsAction;
 
+namespace {
+
+const char* kSetting = "setting";
+const char* kPattern = "pattern";
+
+// Takes the |host| string and tries to get the canonical version. Returns
+// whether the operation succeeded, and if it did and the |output_string| is
+// not NULL writes the canonical version in |output_string|.
+bool CheckHostname(std::string host, std::string* output_string) {

[Bernhard Bauer, 2013/04/02 11:08:36]

This method has too many side effects for my taste to just be called "Check..."
Maybe CanonicalizeHostname()?

[Sergiu, 2013/04/02 14:55:38]

Renamed to CanonicalizeHost, as the other function is called, although
"canonicalize" is not really a verb in English :P

[Bernhard Bauer, 2013/04/02 15:07:56]

It's not? It has a wiktionary entry: http://en.wiktionary.org/wiki/canonicalize.

+  url_parse::Component in_comp(0, host.length());
+  url_parse::Component out_comp;
+  std::string output;
+
+  url_canon::StdStringCanonOutput canon_output(&output);
+  url_canon::CanonHostInfo host_info;
+
+  bool is_valid = url_canon::CanonicalizeHost(
+      host.c_str(), in_comp, &canon_output, &out_comp);
+  canon_output.Complete();
+  if (is_valid && output_string)
+    *output_string = output;
+  return is_valid;
+}
+
+// Create a DictionaryValue that will act as a row in the pattern list.
+// Ownership of the pointer is passed to the caller.
+DictionaryValue* GetEntryForPattern(const std::string pattern,
+                                    const std::string setting) {
+  base::DictionaryValue* entry = new base::DictionaryValue();
+  entry->SetString(kPattern, pattern);
+  entry->SetString(kSetting, setting);
+  return entry;
+}
+
+// Read the manual url and host lists from the current profile and add them to
+// the list of |entries|.
+void AddCurrentURLEntries(content::WebUI* web_ui, ListValue* entries) {
+  Profile* profile = Profile::FromWebUI(web_ui);
+  const DictionaryValue* dict =
+      profile->GetPrefs()->GetDictionary(prefs::kManagedModeManualHosts);
+  for (DictionaryValue::Iterator it(*dict); !it.IsAtEnd(); it.Advance()) {
+    bool allow = false;
+    bool result = it.value().GetAsBoolean(&allow);
+    DCHECK(result);
+    entries->Append(
+        GetEntryForPattern(it.key(), allow ? "allow" : "block"));
+  }
+
+  dict = profile->GetPrefs()->GetDictionary(prefs::kManagedModeManualURLs);
+  for (DictionaryValue::Iterator it(*dict); !it.IsAtEnd(); it.Advance()) {
+    bool allow = false;
+    bool result = it.value().GetAsBoolean(&allow);
+    DCHECK(result);
+    entries->Append(
+        GetEntryForPattern(it.key(), allow ? "allow" : "block"));
+  }
+}
+
+}  // namespace
+
 namespace options {
 
 ManagedUserSettingsHandler::ManagedUserSettingsHandler() {
 }
 
 ManagedUserSettingsHandler::~ManagedUserSettingsHandler() {
 }
 
 void ManagedUserSettingsHandler::InitializeHandler() {
   pref_change_registrar_.Init(Profile::FromWebUI(web_ui())->GetPrefs());
   pref_change_registrar_.Add(
       prefs::kManagedModeLocalPassphrase,
       base::Bind(&ManagedUserSettingsHandler::OnLocalPassphraseChanged,
                  base::Unretained(this)));
 }
 
 void ManagedUserSettingsHandler::InitializePage() {
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableManagedUsers)) {
     PrefService* pref_service = Profile::FromWebUI(web_ui())->GetPrefs();
     base::FundamentalValue is_passphrase_set(!pref_service->GetString(
         prefs::kManagedModeLocalPassphrase).empty());
     web_ui()->CallJavascriptFunction(
         "ManagedUserSettings.passphraseChanged",
         is_passphrase_set);
   }
+
+  // Populate the list.
+  UpdateViewFromModel();
 }
 
 void ManagedUserSettingsHandler::HandlePageOpened(const base::ListValue* args) {
   start_time_ = base::TimeTicks::Now();
   content::RecordAction(UserMetricsAction("ManagedMode_OpenSettings"));
 }
 
 void ManagedUserSettingsHandler::GetLocalizedValues(
     base::DictionaryValue* localized_strings) {
   DCHECK(localized_strings);
 
   static OptionsStringResource resources[] = {
     // Unlock the settings page to allow editing.
     { "unlockSettings", IDS_UNLOCK_PASSPHRASE_BUTTON },
     { "lockSettings", IDS_LOCK_MANAGED_USER_BUTTON },
+    // Manual exception view.
+    { "allowException", IDS_EXCEPTIONS_ALLOW_BUTTON },
+    { "blockException", IDS_EXCEPTIONS_BLOCK_BUTTON },
+    { "addNewExceptionInstructions", IDS_EXCEPTIONS_ADD_NEW_INSTRUCTIONS },
+    { "manageExceptions", IDS_EXCEPTIONS_MANAGE },
+    { "exceptionPatternHeader", IDS_EXCEPTIONS_PATTERN_HEADER },
+    { "exceptionBehaviorHeader", IDS_EXCEPTIONS_ACTION_HEADER },
     // Installed content packs.
-    { "installedContentPacks", IDS_INSTALLED_CONTENT_PACKS_LABEL },
+    { "manualExceptionsHeader", IDS_MANUAL_EXCEPTION_HEADER },
+    { "manualExceptionsTabTitle", IDS_MANUAL_EXCEPTION_TAB_TITLE },
+    { "contentPacksTabLabel", IDS_CONTENT_PACKS_TAB_LABEL },
     { "getContentPacks", IDS_GET_CONTENT_PACKS_BUTTON },
     { "getContentPacksURL", IDS_GET_CONTENT_PACKS_URL },
     // Content pack restriction options.
     { "contentPackSettings", IDS_CONTENT_PACK_SETTINGS_LABEL },
     { "outsideContentPacksAllow", IDS_OUTSIDE_CONTENT_PACKS_ALLOW_RADIO },
     { "outsideContentPacksWarn", IDS_OUTSIDE_CONTENT_PACKS_WARN_RADIO },
     { "outsideContentPacksBlock", IDS_OUTSIDE_CONTENT_PACKS_BLOCK_RADIO },
     // Other managed user settings
     { "advancedManagedUserSettings", IDS_ADVANCED_MANAGED_USER_LABEL },
     { "enableSafeSearch", IDS_SAFE_SEARCH_ENABLED },
     { "allowSignIn", IDS_SIGNIN_SYNC_ALLOWED },
     { "disableHistoryDeletion", IDS_HISTORY_DELETION_DISABLED },
     { "usePassphrase", IDS_USE_PASSPHRASE_LABEL },
     { "setPassphrase", IDS_SET_PASSPHRASE_BUTTON }
   };
 
   RegisterStrings(localized_strings, resources, arraysize(resources));
   RegisterTitle(localized_strings, "managedUserSettingsPage",
                 IDS_MANAGED_USER_SETTINGS_TITLE);
-
+  RegisterTitle(localized_strings, "manualExceptions",
+                IDS_MANUAL_EXCEPTION_HEADER);
   localized_strings->SetBoolean(
       "managedUsersEnabled",
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableManagedUsers));
 }
 
 void ManagedUserSettingsHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "confirmManagedUserSettings",
       base::Bind(&ManagedUserSettingsHandler::SaveMetrics,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
       "settingsPageOpened",
       base::Bind(&ManagedUserSettingsHandler::HandlePageOpened,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("removeManualException",
+      base::Bind(&ManagedUserSettingsHandler::RemoveManualException,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("setManualException",
+      base::Bind(&ManagedUserSettingsHandler::SetManualException,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("checkManualExceptionValidity",
+      base::Bind(
+      &ManagedUserSettingsHandler::CheckManualExceptionValidity,
+                 base::Unretained(this)));
 }
 
 void ManagedUserSettingsHandler::SaveMetrics(const ListValue* args) {
   if (first_run::IsChromeFirstRun()) {
     UMA_HISTOGRAM_LONG_TIMES("ManagedMode.UserSettingsFirstRunTime",
                              base::TimeTicks::Now() - start_time_);
   } else {
     UMA_HISTOGRAM_LONG_TIMES("ManagedMode.UserSettingsModifyTime",
                              base::TimeTicks::Now() - start_time_);
   }
 }
 
 void ManagedUserSettingsHandler::OnLocalPassphraseChanged() {
   PrefService* pref_service = Profile::FromWebUI(web_ui())->GetPrefs();
   base::FundamentalValue is_passphrase_set(!pref_service->GetString(
       prefs::kManagedModeLocalPassphrase).empty());
   web_ui()->CallJavascriptFunction("ManagedUserSettings.passphraseChanged",
                                    is_passphrase_set);
 }
 
+void ManagedUserSettingsHandler::RemoveManualException(
+    const ListValue* args) {
+  size_t arg_i = 0;
+  std::string pattern;
+  CHECK(args->GetString(arg_i++, &pattern));
+
+  UpdateManualBehavior(pattern, ManagedUserService::MANUAL_NONE);
+
+  UpdateViewFromModel();
+}
+
+void ManagedUserSettingsHandler::UpdateManualBehavior(
+    std::string pattern,
+    ManagedUserService::ManualBehavior behavior) {
+  ManagedUserService* service =
+      ManagedUserServiceFactory::GetForProfile(Profile::FromWebUI(web_ui()));
+  GURL url(pattern);
+  if (!url.is_valid()) {
+    // This is a host, get the canonical version of the string.
+    std::vector<std::string> to_update;
+    std::string canonical_host;
+    DCHECK(CheckHostname(pattern, &canonical_host));

[Bernhard Bauer, 2013/04/02 11:08:36]

This will leave |canonical_host| empty in a non-DCHECK-enabled build. What you
want is to store the return value in a variable and only DCHECK that.

[Sergiu, 2013/04/02 14:55:38]

Ah, got it.

+    to_update.push_back(canonical_host);
+    service->SetManualBehaviorForHosts(to_update, behavior);
+  } else {
+    // A specific URL. The GURL generates the canonical form when being built.
+    std::vector<GURL> to_update;
+    to_update.push_back(url);
+    service->SetManualBehaviorForURLs(to_update, behavior);
+  }
+}
+
+void ManagedUserSettingsHandler::SetManualException(
+    const ListValue* args) {
+  size_t arg_i = 0;
+  std::string pattern;
+  CHECK(args->GetString(arg_i++, &pattern));
+  std::string setting;
+  CHECK(args->GetString(arg_i++, &setting));
+  bool needs_update;
+  CHECK(args->GetBoolean(arg_i++, &needs_update));
+
+  DCHECK(setting == "allow" || setting == "block");
+  ManagedUserService::ManualBehavior behavior =
+      (setting == "allow") ? ManagedUserService::MANUAL_ALLOW
+                           : ManagedUserService::MANUAL_BLOCK;
+  UpdateManualBehavior(pattern, behavior);
+
+  if (needs_update)
+    UpdateViewFromModel();
+}
+
+void ManagedUserSettingsHandler::CheckManualExceptionValidity(
+    const ListValue* args) {
+  size_t arg_i = 0;
+  std::string pattern_string;
+  CHECK(args->GetString(arg_i++, &pattern_string));
+  bool is_valid = false;
+
+  // First, try to see if it is a valid URL.
+  GURL url(pattern_string);
+  is_valid = url.is_valid() && url.IsStandard();
+
+  // If it's not valid, try to put a http:// schema to it. If it was a host, it
+  // should be valid now, but check that the path, query and ref are empty.
+  if (!is_valid)
+    is_valid = CheckHostname(pattern_string, NULL);

[Bernhard Bauer, 2013/04/02 11:08:36]

I think you could move the declaration of |is_valid| to here:

 bool is_valid = (url.is_valid() && url.IsStandard()) ||
                 CheckHostname(pattern_string, NULL);

[Sergiu, 2013/04/02 14:55:38]

True, done.

+
+  web_ui()->CallJavascriptFunction(
+      "ManagedUserSettings.patternValidityCheckComplete",
+      base::StringValue(pattern_string),
+      base::FundamentalValue(is_valid));
+}
+
+void ManagedUserSettingsHandler::UpdateViewFromModel() {
+  ListValue entries;
+  AddCurrentURLEntries(web_ui(), &entries);
+
+  web_ui()->CallJavascriptFunction(
+      "ManagedUserSettings.setManualExceptions",
+      entries);
+}
+
 }  // namespace options