forked from headzoo/surf
/
agent.go
359 lines (325 loc) · 10.9 KB
/
agent.go
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// Package agent generates user agents strings for well known browsers
// and for custom browsers.
//
// When submitting patches to add user agents formats, please *always* include
// "{{.Coms}}" between the opening ( and closing ) braces, even if you're
// sure the browser would never have additional comments.
package agent
import (
"bytes"
"runtime"
"strings"
"text/template"
)
var (
// Name is the name of the browser.
Name = "Surf"
// Version is the browser version.
Version = "1.0"
// OSName is the operating system name.
OSName = osName()
// OSVersion is the operating system version.
OSVersion = osVersion()
// Comments are additional comments to add to a user agent string.
Comments = []string{runtime.Version()}
)
const (
// Windows operating system.
Windows int = iota
// Linux based operating system.
Linux
// Macintosh/OS X operating system.
Macintosh
)
// TemplateData structure for template data.
type TemplateData struct {
Name string
Ver string
OSN string
OSV string
Coms string
}
// OSAttributes stores OS attributes.
type OSAttributes struct {
OSName string
OSVersion string
Comments []string
}
// DefaultOSAttributes stores default OS attributes.
var DefaultOSAttributes = map[int]OSAttributes{
Windows: {"Windows NT", "6.3", []string{"x64"}},
Linux: {"Linux", "3.16.1", []string{"x64"}},
Macintosh: {"Intel Mac OS X", "10_6_8", []string{}},
}
// Formats is a collection of UA format strings.
type Formats map[string]string
// UAData stores information on a browser user agent.
type UAData struct {
TopVersion string
DefaultOS int
Formats Formats
}
// UATable is a collection of UAData values.
type UATable map[string]UAData
// Database is the "database" of user agents.
var Database = UATable{
"chrome": {
"37.0.2049.0",
Windows,
Formats{
"37": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"36": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"35": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"34": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"33": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"32": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"31": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
"30": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}) Chrome/{{.Ver}} Safari/537.36",
},
},
"firefox": {
"31.0",
Windows,
Formats{
"31": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:31.0) Gecko/20100101 Firefox/{{.Ver}}",
"30": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:30.0) Gecko/20120101 Firefox/{{.Ver}}",
"29": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:29.0) Gecko/20120101 Firefox/{{.Ver}}",
"28": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:28.0) Gecko/20100101 Firefox/{{.Ver}}",
"27": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:27.0) Gecko/20130101 Firefox/{{.Ver}}",
"26": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:26.0) Gecko/20121011 Firefox/{{.Ver}}",
"25": "Mozilla/5.0 ({{.OSN}} {{.OSV}}{{.Coms}}; rv:25.0) Gecko/20100101 Firefox/{{.Ver}}",
},
},
"msie": {
"10.0",
Windows,
Formats{
"10": "Mozilla/5.0 (compatible; MSIE 10.0; {{.OSN}} {{.OSV}}{{if .Coms}}{{.Coms}}; {{end}}Trident/5.0; .NET CLR 3.5.30729)",
"9": "Mozilla/5.0 (compatible; MSIE 9.0; {{.OSN}} {{.OSV}}{{if .Coms}}{{.Coms}}; {{end}}Trident/5.0; .NET CLR 3.0.30729)",
"8": "Mozilla/5.0 (compatible; MSIE 8.0; {{.OSN}} {{.OSV}}{{if .Coms}}{{.Coms}}; {{end}}Trident/4.0; .NET CLR 3.0.04320)",
"7": "Mozilla/4.0 (compatible; MSIE 7.0; {{.OSN}} {{.OSV}}{{if .Coms}}{{.Coms}}; {{end}}.NET CLR 2.0.50727)",
},
},
"opera": {
"12.14",
Windows,
Formats{
"12": "Opera/9.80 ({{.OSN}} {{.OSV}}; U{{.Coms}}) Presto/2.9.181 Version/{{.Ver}}",
"11": "Opera/9.80 ({{.OSN}} {{.OSV}}; U{{.Coms}}) Presto/2.7.62 Version/{{.Ver}}",
"10": "Opera/9.80 ({{.OSN}} {{.OSV}}; U{{.Coms}}) Presto/2.2.15 Version/{{.Ver}}",
"9": "Opera/9.00 ({{.OSN}} {{.OSV}}; U{{.Coms}})",
},
},
"safari": {
"6.0",
Macintosh,
Formats{
"6": "Mozilla/5.0 (Macintosh; {{.OSN}} {{.OSV}}{{.Coms}}) AppleWebKit/536.26 (KHTML, like Gecko) Version/{{.Ver}} Safari/8536.25",
"5": "Mozilla/5.0 (Macintosh; {{.OSN}} {{.OSV}}{{.Coms}}) AppleWebKit/531.2+ (KHTML, like Gecko) Version/{{.Ver}} Safari/531.2+",
"4": "Mozilla/5.0 (Macintosh; {{.OSN}} {{.OSV}}{{.Coms}}) AppleWebKit/528.16 (KHTML, like Gecko) Version/{{.Ver}} Safari/528.16",
},
},
"itunes": {
"9.1.1",
Macintosh,
Formats{
"9": "iTunes/{{.Ver}}",
"8": "iTunes/{{.Ver}}",
"7": "iTunes/{{.Ver}} (Macintosh; U; PPC Mac OS X 10.4.7{{.Coms}})",
"6": "iTunes/{{.Ver}} (Macintosh; U; PPC Mac OS X 10.4.5{{.Coms}})",
},
},
"aol": {
"9.7",
Windows,
Formats{
"9": "Mozilla/5.0 (compatible; MSIE 9.0; AOL {{.Ver}}; AOLBuild 4343.19; {{.OSN}} {{.OSV}}; WOW64; Trident/5.0; FunWebProducts{{.Coms}})",
"8": "Mozilla/4.0 (compatible; MSIE 7.0; AOL {{.Ver}}; {{.OSN}} {{.OSV}}; GTB5; .NET CLR 1.1.4322; .NET CLR 2.0.50727{{.Coms}})",
"7": "Mozilla/4.0 (compatible; MSIE 7.0; AOL {{.Ver}}; {{.OSN}} {{.OSV}}; FunWebProducts{{.Coms}})",
"6": "Mozilla/4.0 (compatible; MSIE 6.0; AOL {{.Ver}}; {{.OSN}} {{.OSV}}{{.Coms}})",
},
},
"konqueror": {
"4.9",
Linux,
Formats{
"4": "Mozilla/5.0 (compatible; Konqueror/4.0; {{.OSN}}{{.Coms}}) KHTML/4.0.3 (like Gecko)",
"3": "Mozilla/5.0 (compatible; Konqueror/3.0-rc6; i686 {{.OSN}}; 20021127{{.Coms}})",
"2": "Mozilla/5.0 (compatible; Konqueror/2.1.1; {{.OSN}}{{.Coms}})",
},
},
"netscape": {
"9.1.0285",
Windows,
Formats{
"9": "Mozilla/5.0 ({{.OSN}}; U; {{.OSN}} {{.OSV}}; rv:1.9.2.4{{.Coms}}) Gecko/20070321 Netscape/{{.Ver}}",
"8": "Mozilla/5.0 ({{.OSN}}; U; {{.OSN}} {{.OSV}}; rv:1.7.5{{.Coms}}) Gecko/20050519 Netscape/{{.Ver}}",
"7": "Mozilla/5.0 ({{.OSN}}; U; {{.OSN}} {{.OSV}}; rv:1.0.1{{.Coms}}) Gecko/20020921 Netscape/{{.Ver}}",
},
},
"lynx": {
"2.8.8dev.3",
Linux,
Formats{
"2": "Lynx/{{.Ver}} libwww-FM/2.14 SSL-MM/1.4.1",
"1": "Lynx (textmode)",
},
},
"googlebot": {
"2.1",
Linux,
Formats{
"2": "Mozilla/5.0 (compatible; Googlebot/{{.Ver}}; +http://www.google.com/bot.html{{.Coms}})",
"1": "Googlebot/{{.Ver}} (+http://www.google.com/bot.html{{.Coms}})",
},
},
"bingbot": {
"2.0",
Windows,
Formats{
"2": "Mozilla/5.0 (compatible; bingbot/{{.Ver}}; +http://www.bing.com/bingbot.htm{{.Coms}})",
},
},
"yahoobot": {
"2.0",
Linux,
Formats{
"2": "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp{{.Coms}})",
},
},
"default": {
"1.0",
Linux,
Formats{
"1": "{{.Name}}/{{.Ver}} ({{.OSN}} {{.OSV}}{{.Coms}})",
},
},
}
// Chrome returns a user agent string for the most recent version of the Chrome browser.
func Chrome() string {
return createFromDefaults("Chrome")
}
// Firefox returns a user agent string for the most recent version of the Firefox browser.
func Firefox() string {
return createFromDefaults("Firefox")
}
// MSIE returns a user agent string for most recent version of the Microsoft Internet Explorer.
func MSIE() string {
return createFromDefaults("MSIE")
}
// Safari returns a user agent string for the most recent version of the Safari browser.
func Safari() string {
return createFromDefaults("Safari")
}
// AOL returns a user agent string for the most recent version of the AOL browser.
func AOL() string {
return createFromDefaults("AOL")
}
// Opera returns a user agent string for the most recent version of the Opera browser.
func Opera() string {
return createFromDefaults("Opera")
}
// ITunes returns a user agent string for the most recent version of the iTunes media player.
func ITunes() string {
return createFromDefaults("ITunes")
}
// Konqueror returns a user agent string for the most recent version of the Konqueror browser.
func Konqueror() string {
return createFromDefaults("Konqueror")
}
// Netscape returns a user agent string for the most recent version of the Netscape Navigator browser.
func Netscape() string {
return createFromDefaults("Netscape")
}
// Lynx returns a user agent string for the most recent version of the Lynx cli browser.
func Lynx() string {
return createFromDefaults("Lynx")
}
// GoogleBot returns a user agent string for the most recent version of the GoogleBot crawler.
func GoogleBot() string {
return createFromDefaults("GoogleBot")
}
// BingBot returns a user agent string for the most recent version of the BingBot crawler.
func BingBot() string {
return createFromDefaults("BingBot")
}
// YahooBot returns a user agent string for the most recent version of the YahooBot crawler.
func YahooBot() string {
return createFromDefaults("YahooBot")
}
// Create generates and returns a complete user agent string.
func Create() string {
return createFromDetails(Name, Version, OSName, OSVersion, Comments)
}
// CreateVersion generates and returns a complete user agent string for a specific browser version.
func CreateVersion(browser, version string) string {
bn := strings.ToLower(browser)
data := Database[bn]
os := data.DefaultOS
osAttribs := DefaultOSAttributes[os]
return createFromDetails(
browser,
version,
osAttribs.OSName,
osAttribs.OSVersion,
osAttribs.Comments)
}
// TopVersion returns the most recent version for the given browser name.
func TopVersion(bname string) string {
bname = strings.ToLower(bname)
data, ok := Database[bname]
if ok {
return data.TopVersion
}
return Database["default"].TopVersion
}
// Format returns the format string for the given browser name and version.
//
// When a format can't be found for a version, the first format string for the browser
// is returned. When a format can't be found for the browser the default format is
// returned.
func Format(bname, bver string) string {
bname = strings.ToLower(bname)
majVer := strings.Split(bver, ".")[0]
data, ok := Database[bname]
if ok {
format, ok := data.Formats[majVer]
if ok {
return format
} else {
top := TopVersion(bname)
majVer = strings.Split(top, ".")[0]
return data.Formats[majVer]
}
}
return Database["default"].Formats["1"]
}
// createFromDefaults returns a user agent string using default values.
func createFromDefaults(browser string) string {
bn := strings.ToLower(browser)
data := Database[bn]
os := data.DefaultOS
osAttribs := DefaultOSAttributes[os]
return createFromDetails(
browser,
data.TopVersion,
osAttribs.OSName,
osAttribs.OSVersion,
osAttribs.Comments)
}
// createFromDetails generates and returns a complete user agent string.
func createFromDetails(bname, bver, osname, osver string, c []string) string {
if bver == "" {
bver = TopVersion(bname)
}
comments := strings.Join(c, "; ")
if comments != "" {
comments = "; " + comments
}
data := TemplateData{bname, bver, osname, osver, comments}
buff := &bytes.Buffer{}
t := template.New("formatter")
t.Parse(Format(bname, bver))
t.Execute(buff, data)
return buff.String()
}