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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 "content/public/common/user_agent.h" | |
6 | |
7 #import <UIKit/UIKit.h> | |
8 | |
9 #include <sys/sysctl.h> | |
10 #include <string> | |
11 | |
12 #include "base/mac/scoped_nsobject.h" | |
13 #include "base/strings/string_util.h" | |
14 #include "base/strings/stringprintf.h" | |
15 #include "base/strings/sys_string_conversions.h" | |
16 #include "base/sys_info.h" | |
17 | |
18 namespace { | |
19 | |
20 struct UAVersions { | |
21 const char* safari_version_string; | |
22 const char* webkit_version_string; | |
23 }; | |
24 | |
25 struct OSVersionMap { | |
26 int32 major_os_version; | |
27 int32 minor_os_version; | |
28 UAVersions ua_versions; | |
29 }; | |
30 | |
31 const UAVersions& GetUAVersionsForCurrentOS() { | |
32 // The WebKit version can be extracted dynamically from UIWebView, but the | |
33 // Safari version can't be, so a lookup table is used instead (for both, since | |
34 // the reported versions should stay in sync). | |
35 static const OSVersionMap version_map[] = { | |
36 { 7, 1, { "9537.53", "537.51.2" } }, | |
37 { 7, 0, { "9537.53", "537.51.1" } }, | |
38 // 6.1 has the same values as 6.0. | |
39 { 6, 0, { "8536.25", "536.26" } }, | |
40 }; | |
41 | |
42 int32 os_major_version = 0; | |
43 int32 os_minor_version = 0; | |
44 int32 os_bugfix_version = 0; | |
45 base::SysInfo::OperatingSystemVersionNumbers(&os_major_version, | |
46 &os_minor_version, | |
47 &os_bugfix_version); | |
48 | |
49 // Return the versions corresponding to the first (and thus highest) OS | |
50 // version less than or equal to the given OS version. | |
51 for (unsigned int i = 0; i < arraysize(version_map); ++i) { | |
52 if (os_major_version > version_map[i].major_os_version || | |
53 (os_major_version == version_map[i].major_os_version && | |
54 os_minor_version >= version_map[i].minor_os_version)) | |
55 return version_map[i].ua_versions; | |
56 } | |
57 NOTREACHED(); | |
58 return version_map[arraysize(version_map) - 1].ua_versions; | |
59 } | |
60 | |
61 } // namespace | |
62 | |
63 namespace content { | |
64 | |
65 std::string BuildOSCpuInfo() { | |
66 int32 os_major_version = 0; | |
67 int32 os_minor_version = 0; | |
68 int32 os_bugfix_version = 0; | |
69 base::SysInfo::OperatingSystemVersionNumbers(&os_major_version, | |
70 &os_minor_version, | |
71 &os_bugfix_version); | |
72 std::string os_version; | |
73 if (os_bugfix_version == 0) { | |
74 base::StringAppendF(&os_version, | |
75 "%d_%d", | |
76 os_major_version, | |
77 os_minor_version); | |
78 } else { | |
79 base::StringAppendF(&os_version, | |
80 "%d_%d_%d", | |
81 os_major_version, | |
82 os_minor_version, | |
83 os_bugfix_version); | |
84 } | |
85 | |
86 // Remove the end of the platform name. For example "iPod touch" becomes | |
87 // "iPod". | |
88 std::string platform = base::SysNSStringToUTF8( | |
89 [[UIDevice currentDevice] model]); | |
90 size_t position = platform.find_first_of(" "); | |
91 if (position != std::string::npos) | |
92 platform = platform.substr(0, position); | |
93 | |
94 std::string os_cpu; | |
95 base::StringAppendF( | |
96 &os_cpu, | |
97 "%s; CPU %s %s like Mac OS X", | |
98 platform.c_str(), | |
99 (platform == "iPad") ? "OS" : "iPhone OS", | |
100 os_version.c_str()); | |
101 | |
102 return os_cpu; | |
103 } | |
104 | |
105 std::string BuildUserAgentFromProduct(const std::string& product) { | |
106 // Retrieve the kernel build number. | |
107 int mib[2] = {CTL_KERN, KERN_OSVERSION}; | |
108 unsigned int namelen = sizeof(mib) / sizeof(mib[0]); | |
109 size_t bufferSize = 0; | |
110 sysctl(mib, namelen, NULL, &bufferSize, NULL, 0); | |
111 char kernel_version[bufferSize]; | |
112 int result = sysctl(mib, namelen, kernel_version, &bufferSize, NULL, 0); | |
113 DCHECK(result == 0); | |
114 | |
115 UAVersions ua_versions = GetUAVersionsForCurrentOS(); | |
116 | |
117 std::string user_agent; | |
118 base::StringAppendF(&user_agent, | |
119 "Mozilla/5.0 (%s) AppleWebKit/%s" | |
120 " (KHTML, like Gecko) %s Mobile/%s Safari/%s", | |
121 BuildOSCpuInfo().c_str(), | |
122 ua_versions.webkit_version_string, | |
123 product.c_str(), | |
124 kernel_version, | |
125 ua_versions.safari_version_string); | |
126 | |
127 return user_agent; | |
128 } | |
129 | |
130 } // namespace content | |
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