chrome/browser/autocomplete/chrome_autocomplete_scheme_classifier.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/autocomplete/chrome_autocomplete_scheme_classifier.h"
   6
   7 #include "base/strings/string_util.h"
   8 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
   9 #include "chrome/browser/external_protocol/external_protocol_handler.h"
  10 #include "chrome/browser/profiles/profile_io_data.h"
  11 #include "content/public/common/url_constants.h"
  12 #include "net/base/net_util.h"
  13 #include "url/url_util.h"
  14
  15 ChromeAutocompleteSchemeClassifier::ChromeAutocompleteSchemeClassifier(
  16     Profile* profile)
  17     : profile_(profile) {
  18 }
  19
  20 ChromeAutocompleteSchemeClassifier::~ChromeAutocompleteSchemeClassifier() {
  21 }
  22
  23 metrics::OmniboxInputType::Type
  24 ChromeAutocompleteSchemeClassifier::GetInputTypeForScheme(
  25     const std::string& scheme) const {
  26   if (base::IsStringASCII(scheme) &&
  27       (ProfileIOData::IsHandledProtocol(scheme) ||
  28        base::LowerCaseEqualsASCII(scheme, content::kViewSourceScheme) ||
  29        base::LowerCaseEqualsASCII(scheme, url::kJavaScriptScheme) ||
  30        base::LowerCaseEqualsASCII(scheme, url::kDataScheme))) {
  31     return metrics::OmniboxInputType::URL;
  32   }
  33
  34   // Also check for schemes registered via registerProtocolHandler(), which
  35   // can be handled by web pages/apps.
  36   ProtocolHandlerRegistry* registry = profile_ ?
  37       ProtocolHandlerRegistryFactory::GetForBrowserContext(profile_) : NULL;
  38   if (registry && registry->IsHandledProtocol(scheme))
  39     return metrics::OmniboxInputType::URL;
  40
  41   // Not an internal protocol; check if it's an external protocol, i.e. one
  42   // that's registered on the user's OS and will shell out to another program.
  43   //
  44   // We need to do this after the checks above because some internally
  45   // handlable schemes (e.g. "javascript") may be treated as "blocked" by the
  46   // external protocol handler because we don't want pages to open them, but
  47   // users still can.
  48   const ExternalProtocolHandler::BlockState block_state =
  49       ExternalProtocolHandler::GetBlockState(scheme);
  50   switch (block_state) {
  51     case ExternalProtocolHandler::DONT_BLOCK:
  52       return metrics::OmniboxInputType::URL;
  53
  54     case ExternalProtocolHandler::BLOCK:
  55       // If we don't want the user to open the URL, don't let it be navigated
  56       // to at all.
  57       return metrics::OmniboxInputType::QUERY;
  58
  59     default:
  60       return metrics::OmniboxInputType::INVALID;
  61   }
  62 }