Introduce an extension parameter which is used to customize the extension. It's available for exter…

chrome/browser/extensions/api/settings_overrides/settings_overrides_api.cc

 // Copyright 2013 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/extensions/api/settings_overrides/settings_overrides_api.h"
 
 #include "base/lazy_instance.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/preference/preference_api.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/common/extensions/manifest_handlers/settings_overrides_handler.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_prefs_factory.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/manifest_constants.h"
 
 namespace extensions {
 
 namespace {
+
 base::LazyInstance<BrowserContextKeyedAPIFactory<SettingsOverridesAPI> >
     g_factory = LAZY_INSTANCE_INITIALIZER;
 
 const char kManyStartupPagesWarning[] = "* specifies more than 1 startup URL. "
     "All but the first will be ignored.";
 
 using api::manifest_types::ChromeSettingsOverrides;
 
+std::string SubstituteInstallParam(std::string str,
+                                   const std::string& install_parameter) {
+  ReplaceSubstringsAfterOffset(&str, 0, "__PARAM__", install_parameter);
+  return str;
+}
+
 TemplateURLData ConvertSearchProvider(
-    const ChromeSettingsOverrides::Search_provider& search_provider) {
+    const ChromeSettingsOverrides::Search_provider& search_provider,
+    const std::string& install_parameter) {
   TemplateURLData data;
 
   data.short_name = base::UTF8ToUTF16(search_provider.name);
   data.SetKeyword(base::UTF8ToUTF16(search_provider.keyword));
-  data.SetURL(search_provider.search_url);
-  if (search_provider.suggest_url)
-    data.suggestions_url = *search_provider.suggest_url;
-  if (search_provider.instant_url)
-    data.instant_url = *search_provider.instant_url;
-  if (search_provider.image_url)
-    data.image_url = *search_provider.image_url;
+  data.SetURL(
+      SubstituteInstallParam(search_provider.search_url, install_parameter));
+  if (search_provider.suggest_url) {
+    data.suggestions_url =
+        SubstituteInstallParam(*search_provider.suggest_url, install_parameter);
+  }
+  if (search_provider.instant_url) {
+    data.instant_url =
+        SubstituteInstallParam(*search_provider.instant_url, install_parameter);
+  }
+  if (search_provider.image_url) {
+    data.image_url =
+        SubstituteInstallParam(*search_provider.image_url, install_parameter);
+  }
   if (search_provider.search_url_post_params)
     data.search_url_post_params = *search_provider.search_url_post_params;
   if (search_provider.suggest_url_post_params)
     data.suggestions_url_post_params = *search_provider.suggest_url_post_params;
   if (search_provider.instant_url_post_params)
     data.instant_url_post_params = *search_provider.instant_url_post_params;
   if (search_provider.image_url_post_params)
     data.image_url_post_params = *search_provider.image_url_post_params;
-  data.favicon_url = GURL(search_provider.favicon_url);
+  data.favicon_url = GURL(
+      SubstituteInstallParam(search_provider.favicon_url, install_parameter));
   data.show_in_default_list = true;
   data.safe_for_autoreplace = false;
   data.input_encodings.push_back(search_provider.encoding);
   data.date_created = base::Time();
   data.last_modified = base::Time();
   data.prepopulate_id = 0;
   if (search_provider.alternate_urls) {
     for (size_t i = 0; i < search_provider.alternate_urls->size(); ++i) {
       if (!search_provider.alternate_urls->at(i).empty())
-        data.alternate_urls.push_back(search_provider.alternate_urls->at(i));
+        data.alternate_urls.push_back(SubstituteInstallParam(
+            search_provider.alternate_urls->at(i), install_parameter));
     }
   }
   return data;
 }
+
 }  // namespace
 
 SettingsOverridesAPI::SettingsOverridesAPI(content::BrowserContext* context)
     : profile_(Profile::FromBrowserContext(context)),
       url_service_(TemplateURLServiceFactory::GetForProfile(profile_)) {
   DCHECK(profile_);
   registrar_.Add(this,
                  chrome::NOTIFICATION_EXTENSION_LOADED,
                  content::Source<Profile>(profile_));
   registrar_.Add(this,
@@ skipping 31 matching lines @@
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   switch (type) {
     case chrome::NOTIFICATION_EXTENSION_LOADED: {
       const Extension* extension =
           content::Details<const Extension>(details).ptr();
       const SettingsOverrides* settings =
           SettingsOverrides::Get(extension);
       if (settings) {
+        std::string install_parameter =
+            ExtensionPrefs::Get(profile_)->GetInstallParam(extension->id());
         if (settings->homepage) {
-          SetPref(extension->id(), prefs::kHomePage,
-                  new base::StringValue(settings->homepage->spec()));
+          SetPref(extension->id(),
+                  prefs::kHomePage,
+                  new base::StringValue(SubstituteInstallParam(
+                      settings->homepage->spec(), install_parameter)));
           SetPref(extension->id(), prefs::kHomePageIsNewTabPage,
                   new base::FundamentalValue(false));
         }
         if (!settings->startup_pages.empty()) {
           SetPref(extension->id(), prefs::kRestoreOnStartup,
                   new base::FundamentalValue(
                       SessionStartupPref::kPrefValueURLs));
           if (settings->startup_pages.size() > 1) {
             VLOG(1) << extensions::ErrorUtils::FormatErrorMessage(
                 kManyStartupPagesWarning, manifest_keys::kSettingsOverride);
           }
           scoped_ptr<base::ListValue> url_list(new base::ListValue);
-          url_list->Append(
-              new base::StringValue(settings->startup_pages[0].spec()));
+          url_list->Append(new base::StringValue(SubstituteInstallParam(
+              settings->startup_pages[0].spec(), install_parameter)));
           SetPref(extension->id(), prefs::kURLsToRestoreOnStartup,
                   url_list.release());
         }
         if (settings->search_engine) {
           SetPref(extension->id(), prefs::kDefaultSearchProviderEnabled,
                   new base::FundamentalValue(true));
           DCHECK(url_service_);
           if (url_service_->loaded()) {
             RegisterSearchProvider(extension);
           } else {
@@ skipping 57 matching lines @@
 void SettingsOverridesAPI::RegisterSearchProvider(
     const Extension* extension) const {
   DCHECK(url_service_);
   DCHECK(extension);
   const SettingsOverrides* settings = SettingsOverrides::Get(extension);
   DCHECK(settings);
   DCHECK(settings->search_engine);
   scoped_ptr<AssociatedExtensionInfo> info(new AssociatedExtensionInfo);
   info->extension_id = extension->id();
   info->wants_to_be_default_engine = settings->search_engine->is_default;
-  info->install_time =
-      ExtensionPrefs::Get(profile_)->GetInstallTime(extension->id());
-  TemplateURLData data = ConvertSearchProvider(*settings->search_engine);
+  ExtensionPrefs* prefs = ExtensionPrefs::Get(profile_);
+  info->install_time = prefs->GetInstallTime(extension->id());
+  std::string install_parameter = prefs->GetInstallParam(extension->id());
+  TemplateURLData data =
+      ConvertSearchProvider(*settings->search_engine, install_parameter);
   url_service_->AddExtensionControlledTURL(new TemplateURL(profile_, data),
                                            info.Pass());
 }
 
 template <>
 void BrowserContextKeyedAPIFactory<
     SettingsOverridesAPI>::DeclareFactoryDependencies() {
   DependsOn(ExtensionPrefsFactory::GetInstance());
   DependsOn(PreferenceAPI::GetFactoryInstance());
   DependsOn(TemplateURLServiceFactory::GetInstance());
 }
 
 }  // namespace extensions