Send URLs on non-zero prefix suggest requests also.

chrome/browser/autocomplete/search_provider.cc

 // Copyright 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/autocomplete/search_provider.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/callback.h"
 #include "base/i18n/break_iterator.h"
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/icu_string_conversions.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
 #include "chrome/browser/autocomplete/autocomplete_match.h"
 #include "chrome/browser/autocomplete/autocomplete_provider_listener.h"
 #include "chrome/browser/autocomplete/autocomplete_result.h"
 #include "chrome/browser/autocomplete/keyword_provider.h"
 #include "chrome/browser/autocomplete/url_prefix.h"
+#include "chrome/browser/google/google_util.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/history/in_memory_database.h"
 #include "chrome/browser/metrics/variations/variations_http_header_provider.h"
 #include "chrome/browser/omnibox/omnibox_field_trial.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_instant_controller.h"
 #include "chrome/browser/ui/search/instant_controller.h"
 #include "chrome/common/net/url_fixer_upper.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "grit/generated_resources.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_util.h"
+#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_status.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/url_util.h"
 
 
 // Helpers --------------------------------------------------------------------
 
@@ skipping 854 matching lines @@
     NavigationResults* list) {
   for (size_t i = 0; i < list->size(); ++i) {
     NavigationResult& result = (*list)[i];
     result.set_relevance(
         result.CalculateRelevance(input_, providers_.has_keyword_provider()) +
         (list->size() - i - 1));
     result.set_relevance_from_server(false);
   }
 }
 
+bool SearchProvider::CanSendURL(
+    const GURL& current_page_url,
+    const GURL& suggest_url,
+    const TemplateURL* template_url,
+    AutocompleteInput::PageClassification page_classification,
+    Profile* profile){
+  if (!current_page_url.is_valid())
+    return false;
+
+  // TODO(hfung): Show Most Visited on NTP with appropriate verbatim
+  // description when the user actively focuses on the omnibox as discussed in
+  // crbug/305366 if Most Visited (or something similar) will launch.
+  // TODO(hfung): Shorten the INSTANT_NEW_TAB_PAGE_WITH_... enums and remove
+  // the const variables.
+  const AutocompleteInput::PageClassification instant_ntp_fakebox =
+      AutocompleteInput::INSTANT_NEW_TAB_PAGE_WITH_FAKEBOX_AS_STARTING_FOCUS;
+  const AutocompleteInput::PageClassification instant_ntp_omnibox =
+      AutocompleteInput::INSTANT_NEW_TAB_PAGE_WITH_OMNIBOX_AS_STARTING_FOCUS;
+  if ((page_classification == instant_ntp_fakebox) ||
+      (page_classification == instant_ntp_omnibox))
+    return false;
+
+  // Only allow HTTP URLs or HTTPS URLs for the same domain as the search
+  // provider.
+  if ((current_page_url.scheme() != content::kHttpScheme) &&
+      ((current_page_url.scheme() != content::kHttpsScheme) ||
+       !net::registry_controlled_domains::SameDomainOrHost(
+           current_page_url, suggest_url,
+           net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES)))
+    return false;
+
+  // Make sure we are sending the suggest request through HTTPS to prevent
+  // exposing the current page URL to networks before the search provider.
+  if (!suggest_url.SchemeIs(content::kHttpsScheme))
+    return false;
+
+  // Don't run if there's no profile or in incognito mode.
+  if (profile == NULL || profile->IsOffTheRecord())
+    return false;
+
+  // Don't run if we can't get preferences or search suggest is not enabled.
+  PrefService* prefs = profile->GetPrefs();
+  if (!prefs->GetBoolean(prefs::kSearchSuggestEnabled))
+    return false;
+
+  // Only make the request if we know that the provider supports zero suggest
+  // (currently only the prepopulated Google provider).
+  if (template_url == NULL || !template_url->SupportsReplacement() ||
+      TemplateURLPrepopulateData::GetEngineType(*template_url) !=
+      SEARCH_ENGINE_GOOGLE)
+    return false;
+
+  // Check field trials and settings allow sending the URL on suggest requests.
+  ProfileSyncService* service =
+      ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
+  browser_sync::SyncPrefs sync_prefs(prefs);
+  if (!OmniboxFieldTrial::InZeroSuggestFieldTrial() ||
+      service == NULL ||
+      !service->IsSyncEnabledAndLoggedIn() ||
+      !sync_prefs.GetPreferredDataTypes(syncer::UserTypes()).Has(
+          syncer::PROXY_TABS) ||
+      service->GetEncryptedDataTypes().Has(syncer::SESSIONS))
+    return false;
+
+  return true;
+}
+
 net::URLFetcher* SearchProvider::CreateSuggestFetcher(
     int id,
     const TemplateURL* template_url,
     const AutocompleteInput& input) {
   if (!template_url || template_url->suggestions_url().empty())
     return NULL;
 
   // Bail if the suggestion URL is invalid with the given replacements.
   TemplateURLRef::SearchTermsArgs search_term_args(input.text());
   search_term_args.cursor_position = input.cursor_position();
   search_term_args.page_classification = input.current_page_classification();
   GURL suggest_url(template_url->suggestions_url_ref().ReplaceSearchTerms(
       search_term_args));
   if (!suggest_url.is_valid())
     return NULL;
+  // Send the current page URL if user setting and URL requirements are met and
+  // the user is in the field trial.
+  if (CanSendURL(current_page_url_, suggest_url, template_url,
+                 input.current_page_classification(), profile_) &&
+      OmniboxFieldTrial::InZeroSuggestAfterTypingFieldTrial()) {
+    search_term_args.current_page_url = current_page_url_.spec();
+    // Create the suggest URL again with the current page URL.
+    suggest_url = GURL(template_url->suggestions_url_ref().ReplaceSearchTerms(
+        search_term_args));
+  }
 
   suggest_results_pending_++;
   LogOmniboxSuggestRequest(REQUEST_SENT);
 
   net::URLFetcher* fetcher =
       net::URLFetcher::Create(id, suggest_url, net::URLFetcher::GET, this);
   fetcher->SetRequestContext(profile_->GetRequestContext());
   fetcher->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES);
   // Add Chrome experiment state to the request headers.
   net::HttpRequestHeaders headers;
@@ skipping 831 matching lines @@
     it->set_relevance(max_query_relevance);
     it->set_relevance_from_server(relevance_from_server);
   }
 }
 
 void SearchProvider::UpdateDone() {
   // We're done when the timer isn't running, there are no suggest queries
   // pending, and we're not waiting on Instant.
   done_ = !timer_.IsRunning() && (suggest_results_pending_ == 0);
 }