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1 // Copyright 2016 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 "components/search_engines/desktop_search_utils.h" | |
6 | |
7 #include <string> | |
8 | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/metrics/histogram_macros.h" | |
11 #include "base/metrics/user_metrics.h" | |
12 #include "base/prefs/pref_service.h" | |
13 #include "base/strings/string_util.h" | |
14 #include "components/pref_registry/pref_registry_syncable.h" | |
15 #include "components/search_engines/prepopulated_engines.h" | |
16 #include "components/search_engines/template_url_prepopulate_data.h" | |
17 #include "components/search_engines/template_url_service.h" | |
18 #include "components/search_engines/util.h" | |
19 #include "net/base/url_util.h" | |
20 | |
21 namespace prefs { | |
22 const char kDesktopSearchRedirectionInfobarShownPref[] = | |
23 "desktop_search_redirection_infobar_shown"; | |
24 } // namespace prefs | |
25 | |
26 const base::Feature kDesktopSearchRedirectionFeature{ | |
27 "DesktopSearchRedirection", base::FEATURE_DISABLED_BY_DEFAULT}; | |
28 | |
29 namespace { | |
Peter Kasting
2016/01/22 00:38:57
Nit: Put anonymous namespace stuff just below the
fdoray
2016/02/01 15:15:53
Done.
| |
30 | |
31 // Values for the Search.DesktopSearch.URLAction histogram. | |
32 enum DesktopSearchURLAction { | |
33 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_FEATURE_DISABLED = 0, | |
34 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_DEFAULT_SEARCH_IS_BING = 1, | |
35 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_INVALID_SEARCH_ENGINE = 2, | |
36 DESKTOP_SEARCH_URL_ACTION_REDIRECTION = 3, | |
37 DESKTOP_SEARCH_URL_ACTION_MAX | |
38 }; | |
39 | |
40 void RecordDesktopSearchURLAction(DesktopSearchURLAction action) { | |
41 DCHECK_LT(action, DESKTOP_SEARCH_URL_ACTION_MAX); | |
42 UMA_HISTOGRAM_ENUMERATION("Search.DesktopSearch.URLAction", action, | |
43 DESKTOP_SEARCH_URL_ACTION_MAX); | |
44 } | |
45 | |
46 // Detects whether a |url| comes from a desktop search. If so, puts the search | |
47 // terms in |search_terms| and returns true. | |
48 bool DetectDesktopSearch(const GURL& url, | |
49 const SearchTermsData& search_terms_data, | |
50 base::string16* search_terms) { | |
51 DCHECK(search_terms); | |
52 search_terms->clear(); | |
53 | |
54 scoped_ptr<TemplateURLData> template_url_data = | |
55 TemplateURLPrepopulateData::MakeTemplateURLDataFromPrepopulatedEngine( | |
56 TemplateURLPrepopulateData::bing); | |
57 TemplateURL template_url(*template_url_data); | |
58 if (!template_url.ExtractSearchTermsFromURL(url, search_terms_data, | |
59 search_terms)) | |
60 return false; | |
61 | |
62 // Query parameter that tells the source of a Bing search URL, and values | |
63 // associated with desktop search. | |
64 const char kBingSourceQueryKey[] = "form"; | |
65 const char kBingSourceDesktopText[] = "WNSGPH"; | |
66 const char kBingSourceDesktopVoice[] = "WNSBOX"; | |
67 for (net::QueryIterator it(url); !it.IsAtEnd(); it.Advance()) { | |
68 // Use a case-insensitive comparison because the key is sometimes in capital | |
69 // letters. | |
70 if (base::EqualsCaseInsensitiveASCII(it.GetKey(), kBingSourceQueryKey)) { | |
71 const std::string source = it.GetValue(); | |
72 if (source == kBingSourceDesktopText || source == kBingSourceDesktopVoice) | |
73 return true; | |
74 } | |
75 } | |
76 | |
77 return false; | |
78 } | |
79 | |
80 } // namespace | |
81 | |
82 void RegisterDesktopSearchRedirectionPref( | |
83 user_prefs::PrefRegistrySyncable* registry) { | |
84 registry->RegisterBooleanPref( | |
85 prefs::kDesktopSearchRedirectionInfobarShownPref, false); | |
86 } | |
87 | |
88 bool ReplaceDesktopSearchURLWithDefaultSearchURLIfNeeded( | |
89 const PrefService* pref_service, | |
90 TemplateURLService* template_url_service, | |
91 GURL* url) { | |
92 DCHECK(pref_service); | |
93 DCHECK(template_url_service); | |
94 DCHECK(url); | |
95 | |
96 // Check if |url| is a desktop search. | |
97 base::string16 search_terms; | |
98 if (!DetectDesktopSearch(*url, template_url_service->search_terms_data(), | |
99 &search_terms)) | |
100 return false; | |
101 | |
102 // Record that the user searched from the desktop. | |
103 base::RecordAction(base::UserMetricsAction("DesktopSearch")); | |
104 | |
105 // Check if the redirection feature is enabled. | |
106 if (!base::FeatureList::IsEnabled(kDesktopSearchRedirectionFeature)) { | |
107 RecordDesktopSearchURLAction( | |
108 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_FEATURE_DISABLED); | |
109 return false; | |
110 } | |
111 | |
112 const TemplateURL* default_search_engine = | |
Peter Kasting
2016/01/22 00:38:57
Nit: Put this block just below the next comment si
fdoray
2016/02/01 15:15:53
Done.
| |
113 template_url_service->GetDefaultSearchProvider(); | |
114 DCHECK(default_search_engine); | |
Peter Kasting
2016/01/22 00:38:57
It's not safe to DCHECK this; users may not have a
fdoray
2016/02/01 15:15:53
Done.
| |
115 | |
116 // Check if the default search engine is Bing. | |
117 if (TemplateURLPrepopulateData::GetEngineType( | |
118 *default_search_engine, template_url_service->search_terms_data()) == | |
119 SEARCH_ENGINE_BING) { | |
120 RecordDesktopSearchURLAction( | |
121 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_DEFAULT_SEARCH_IS_BING); | |
122 return false; | |
123 } | |
124 | |
125 // Replace |url| by a default search engine URL. | |
126 GURL search_url( | |
127 GetDefaultSearchURLForSearchTerms(template_url_service, search_terms)); | |
128 if (!search_url.is_valid()) { | |
129 RecordDesktopSearchURLAction( | |
130 DESKTOP_SEARCH_URL_ACTION_NO_REDIRECTION_INVALID_SEARCH_ENGINE); | |
131 return false; | |
132 } | |
133 | |
134 RecordDesktopSearchURLAction(DESKTOP_SEARCH_URL_ACTION_REDIRECTION); | |
135 | |
136 url->Swap(&search_url); | |
137 return !pref_service->GetBoolean( | |
138 prefs::kDesktopSearchRedirectionInfobarShownPref); | |
139 } | |
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