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.
5 #include "content/public/common/user_agent.h"
7 #import <UIKit/UIKit.h>
9 #include <sys/sysctl.h>
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"
21 const char* safari_version_string;
22 const char* webkit_version_string;
26 int32 major_os_version;
27 int32 minor_os_version;
28 UAVersions ua_versions;
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" } },
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,
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;
58 return version_map[arraysize(version_map) - 1].ua_versions;
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,
72 std::string os_version;
73 if (os_bugfix_version == 0) {
74 base::StringAppendF(&os_version,
79 base::StringAppendF(&os_version,
86 // Remove the end of the platform name. For example "iPod touch" becomes
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);
97 "%s; CPU %s %s like Mac OS X",
99 (platform == "iPad") ? "OS" : "iPhone OS",
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);
115 UAVersions ua_versions = GetUAVersionsForCurrentOS();
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,
125 ua_versions.safari_version_string);
130 } // namespace content