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// Copyright (C) 2012-2014 Miquel Sabaté Solà <mikisabate@gmail.com>
// This file is licensed under the MIT license.
// See the LICENSE file.
package user_agent
import "strings"
// Normalize the name of the operating system. By now, this just
// affects to Windows.
//
// Returns a string containing the normalized name for the Operating System.
func normalizeOS(name string) string {
sp := strings.SplitN(name, " ", 3)
if len(sp) != 3 {
return name
}
switch sp[2] {
case "5.0":
return "Windows 2000"
case "5.01":
return "Windows 2000, Service Pack 1 (SP1)"
case "5.1":
return "Windows XP"
case "5.2":
return "Windows XP x64 Edition"
case "6.0":
return "Windows Vista"
case "6.1":
return "Windows 7"
case "6.2":
return "Windows 8"
case "6.3":
return "Windows 8.1"
case "6.4":
return "Windows 10"
}
return name
}
// Guess the OS, the localization and if this is a mobile device for a
// Webkit-powered browser.
//
// The first argument p is a reference to the current UserAgent and the second
// argument is a slice of strings containing the comment.
func webkit(p *UserAgent, comment []string) {
if p.platform == "webOS" {
p.browser.Name = p.platform
p.os = "Palm"
if len(comment) > 2 {
p.localization = comment[2]
}
p.mobile = true
} else if p.platform == "Symbian" {
p.mobile = true
p.browser.Name = p.platform
p.os = comment[0]
} else if p.platform == "Linux" {
p.mobile = true
if p.browser.Name == "Safari" {
p.browser.Name = "Android"
}
if len(comment) > 1 {
if comment[1] == "U" {
if len(comment) > 2 {
p.os = comment[2]
} else {
p.mobile = false
p.os = comment[0]
}
} else {
p.os = comment[1]
}
}
if len(comment) > 3 {
p.localization = comment[3]
}
} else if len(comment) > 0 {
if len(comment) > 3 {
p.localization = comment[3]
}
if strings.HasPrefix(comment[0], "Windows NT") {
p.os = normalizeOS(comment[0])
} else if len(comment) < 2 {
p.localization = comment[0]
} else if len(comment) < 3 {
if !p.googleBot() {
p.os = normalizeOS(comment[1])
}
} else {
p.os = normalizeOS(comment[2])
}
if p.platform == "BlackBerry" {
p.browser.Name = p.platform
if p.os == "Touch" {
p.os = p.platform
}
}
}
}
// Guess the OS, the localization and if this is a mobile device
// for a Gecko-powered browser.
//
// The first argument p is a reference to the current UserAgent and the second
// argument is a slice of strings containing the comment.
func gecko(p *UserAgent, comment []string) {
if len(comment) > 1 {
if comment[1] == "U" {
if len(comment) > 2 {
p.os = normalizeOS(comment[2])
} else {
p.os = normalizeOS(comment[1])
}
} else {
if p.platform == "Android" {
p.mobile = true
p.platform, p.os = normalizeOS(comment[1]), p.platform
} else if comment[0] == "Mobile" || comment[0] == "Tablet" {
p.mobile = true
p.os = "FirefoxOS"
} else {
if p.os == "" {
p.os = normalizeOS(comment[1])
}
}
}
if len(comment) > 3 {
p.localization = comment[3]
}
}
}
// Guess the OS, the localization and if this is a mobile device
// for Internet Explorer.
//
// The first argument p is a reference to the current UserAgent and the second
// argument is a slice of strings containing the comment.
func trident(p *UserAgent, comment []string) {
// Internet Explorer only runs on Windows.
p.platform = "Windows"
// The OS can be set before to handle a new case in IE11.
if p.os == "" {
if len(comment) > 2 {
p.os = normalizeOS(comment[2])
} else {
p.os = "Windows NT 4.0"
}
}
// Last but not least, let's detect if it comes from a mobile device.
for _, v := range comment {
if strings.HasPrefix(v, "IEMobile") {
p.mobile = true
return
}
}
}
// Guess the OS, the localization and if this is a mobile device
// for Opera.
//
// The first argument p is a reference to the current UserAgent and the second
// argument is a slice of strings containing the comment.
func opera(p *UserAgent, comment []string) {
slen := len(comment)
if strings.HasPrefix(comment[0], "Windows") {
p.platform = "Windows"
p.os = normalizeOS(comment[0])
if slen > 2 {
if slen > 3 && strings.HasPrefix(comment[2], "MRA") {
p.localization = comment[3]
} else {
p.localization = comment[2]
}
}
} else {
if strings.HasPrefix(comment[0], "Android") {
p.mobile = true
}
p.platform = comment[0]
if slen > 1 {
p.os = comment[1]
if slen > 3 {
p.localization = comment[3]
}
} else {
p.os = comment[0]
}
}
}
// Given the comment of the first section of the UserAgent string,
// get the platform.
func getPlatform(comment []string) string {
if len(comment) > 0 {
if comment[0] != "compatible" {
if strings.HasPrefix(comment[0], "Windows") {
return "Windows"
} else if strings.HasPrefix(comment[0], "Symbian") {
return "Symbian"
} else if strings.HasPrefix(comment[0], "webOS") {
return "webOS"
} else if comment[0] == "BB10" {
return "BlackBerry"
}
return comment[0]
}
}
return ""
}
// Detect some properties of the OS from the given section.
func (p *UserAgent) detectOS(s section) {
if s.name == "Mozilla" {
// Get the platform here. Be aware that IE11 provides a new format
// that is not backwards-compatible with previous versions of IE.
p.platform = getPlatform(s.comment)
if p.platform == "Windows" && len(s.comment) > 0 {
p.os = normalizeOS(s.comment[0])
}
// And finally get the OS depending on the engine.
switch p.browser.Engine {
case "":
p.undecided = true
case "Gecko":
gecko(p, s.comment)
case "AppleWebKit":
webkit(p, s.comment)
case "Trident":
trident(p, s.comment)
}
} else if s.name == "Opera" {
if len(s.comment) > 0 {
opera(p, s.comment)
}
} else {
// Check whether this is a bot or just a weird browser.
p.undecided = true
}
}
// Returns a string containing the platform..
func (p *UserAgent) Platform() string {
return p.platform
}
// Returns a string containing the name of the Operating System.
func (p *UserAgent) OS() string {
return p.os
}
// Returns a string containing the localization.
func (p *UserAgent) Localization() string {
return p.localization
}
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