1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
// Copyright 2014 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 "components/google/core/browser/google_util.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/strings/string16.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "components/google/core/browser/google_switches.h"
#include "components/google/core/browser/google_url_tracker.h"
#include "components/url_fixer/url_fixer.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/base/url_util.h"
#include "url/gurl.h"
// Only use Link Doctor on official builds. It uses an API key, too, but
// seems best to just disable it, for more responsive error pages and to reduce
// server load.
#if defined(GOOGLE_CHROME_BUILD)
#define LINKDOCTOR_SERVER_REQUEST_URL "https://www.googleapis.com/rpc"
#else
#define LINKDOCTOR_SERVER_REQUEST_URL ""
#endif
// Helpers --------------------------------------------------------------------
namespace {
bool gUseMockLinkDoctorBaseURLForTesting = false;
bool IsPathHomePageBase(const std::string& path) {
return (path == "/") || (path == "/webhp");
}
// True if |host| is "[www.]<domain_in_lower_case>.<TLD>" with a valid TLD. If
// |subdomain_permission| is ALLOW_SUBDOMAIN, we check against host
// "*.<domain_in_lower_case>.<TLD>" instead.
bool IsValidHostName(const std::string& host,
const std::string& domain_in_lower_case,
google_util::SubdomainPermission subdomain_permission) {
size_t tld_length = net::registry_controlled_domains::GetRegistryLength(
host,
net::registry_controlled_domains::EXCLUDE_UNKNOWN_REGISTRIES,
net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
if ((tld_length == 0) || (tld_length == std::string::npos))
return false;
// Removes the tld and the preceding dot.
std::string host_minus_tld(host, 0, host.length() - tld_length - 1);
if (base::LowerCaseEqualsASCII(host_minus_tld, domain_in_lower_case.c_str()))
return true;
if (subdomain_permission == google_util::ALLOW_SUBDOMAIN)
return EndsWith(host_minus_tld, "." + domain_in_lower_case, false);
return base::LowerCaseEqualsASCII(host_minus_tld,
("www." + domain_in_lower_case).c_str());
}
// True if |url| is a valid URL with HTTP or HTTPS scheme. If |port_permission|
// is DISALLOW_NON_STANDARD_PORTS, this also requires |url| to use the standard
// port for its scheme (80 for HTTP, 443 for HTTPS).
bool IsValidURL(const GURL& url, google_util::PortPermission port_permission) {
return url.is_valid() && url.SchemeIsHTTPOrHTTPS() &&
(url.port().empty() ||
(port_permission == google_util::ALLOW_NON_STANDARD_PORTS));
}
} // namespace
namespace google_util {
// Global functions -----------------------------------------------------------
bool HasGoogleSearchQueryParam(const std::string& str) {
url::Component query(0, static_cast<int>(str.length())), key, value;
while (url::ExtractQueryKeyValue(str.c_str(), &query, &key, &value)) {
if (value.is_nonempty()) {
base::StringPiece key_str(&str[key.begin], key.len);
if (key_str == "q" || key_str == "as_q")
return true;
}
}
return false;
}
GURL LinkDoctorBaseURL() {
if (gUseMockLinkDoctorBaseURLForTesting)
return GURL("http://mock.linkdoctor.url/for?testing");
return GURL(LINKDOCTOR_SERVER_REQUEST_URL);
}
void SetMockLinkDoctorBaseURLForTesting() {
gUseMockLinkDoctorBaseURLForTesting = true;
}
std::string GetGoogleLocale(const std::string& application_locale) {
// Google does not recognize "nb" for Norwegian Bokmal; it uses "no".
return (application_locale == "nb") ? "no" : application_locale;
}
GURL AppendGoogleLocaleParam(const GURL& url,
const std::string& application_locale) {
return net::AppendQueryParameter(
url, "hl", GetGoogleLocale(application_locale));
}
std::string GetGoogleCountryCode(GURL google_homepage_url) {
const std::string google_hostname = google_homepage_url.host();
const size_t last_dot = google_hostname.find_last_of('.');
if (last_dot == std::string::npos) {
NOTREACHED();
}
std::string country_code = google_hostname.substr(last_dot + 1);
// Assume the com TLD implies the US.
if (country_code == "com")
return "us";
// Google uses the Unicode Common Locale Data Repository (CLDR), and the CLDR
// code for the UK is "gb".
if (country_code == "uk")
return "gb";
// Catalonia does not have a CLDR country code, since it's a region in Spain,
// so use Spain instead.
if (country_code == "cat")
return "es";
return country_code;
}
GURL GetGoogleSearchURL(GURL google_homepage_url) {
// To transform the homepage URL into the corresponding search URL, add the
// "search" and the "q=" query string.
GURL::Replacements replacements;
replacements.SetPathStr("search");
replacements.SetQueryStr("q=");
return google_homepage_url.ReplaceComponents(replacements);
}
GURL CommandLineGoogleBaseURL() {
// Unit tests may add command-line flags after the first call to this
// function, so we don't simply initialize a static |base_url| directly and
// then unconditionally return it.
CR_DEFINE_STATIC_LOCAL(std::string, switch_value, ());
CR_DEFINE_STATIC_LOCAL(GURL, base_url, ());
std::string current_switch_value(
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kGoogleBaseURL));
if (current_switch_value != switch_value) {
switch_value = current_switch_value;
base_url = url_fixer::FixupURL(switch_value, std::string());
if (!base_url.is_valid() || base_url.has_query() || base_url.has_ref())
base_url = GURL();
}
return base_url;
}
bool StartsWithCommandLineGoogleBaseURL(const GURL& url) {
GURL base_url(CommandLineGoogleBaseURL());
return base_url.is_valid() &&
base::StartsWithASCII(url.possibly_invalid_spec(), base_url.spec(),
true);
}
bool IsGoogleHostname(const std::string& host,
SubdomainPermission subdomain_permission) {
GURL base_url(CommandLineGoogleBaseURL());
if (base_url.is_valid() && (host == base_url.host()))
return true;
return IsValidHostName(host, "google", subdomain_permission);
}
bool IsGoogleDomainUrl(const GURL& url,
SubdomainPermission subdomain_permission,
PortPermission port_permission) {
return IsValidURL(url, port_permission) &&
IsGoogleHostname(url.host(), subdomain_permission);
}
bool IsGoogleHomePageUrl(const GURL& url) {
// First check to see if this has a Google domain.
if (!IsGoogleDomainUrl(url, DISALLOW_SUBDOMAIN, DISALLOW_NON_STANDARD_PORTS))
return false;
// Make sure the path is a known home page path.
std::string path(url.path());
return IsPathHomePageBase(path) || base::StartsWithASCII(path, "/ig", false);
}
bool IsGoogleSearchUrl(const GURL& url) {
// First check to see if this has a Google domain.
if (!IsGoogleDomainUrl(url, DISALLOW_SUBDOMAIN, DISALLOW_NON_STANDARD_PORTS))
return false;
// Make sure the path is a known search path.
std::string path(url.path());
bool is_home_page_base = IsPathHomePageBase(path);
if (!is_home_page_base && (path != "/search"))
return false;
// Check for query parameter in URL parameter and hash fragment, depending on
// the path type.
return HasGoogleSearchQueryParam(url.ref()) ||
(!is_home_page_base && HasGoogleSearchQueryParam(url.query()));
}
bool IsYoutubeDomainUrl(const GURL& url,
SubdomainPermission subdomain_permission,
PortPermission port_permission) {
return IsValidURL(url, port_permission) &&
IsValidHostName(url.host(), "youtube", subdomain_permission);
}
} // namespace google_util
|
