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|
package browsers
import (
"math/rand"
"regexp"
"strconv"
tls "github.com/refraction-networking/utls"
)
var chromeVersionPattern = regexp.MustCompile(`Chrome/(\d+)`)
var firefoxVersionPattern = regexp.MustCompile(`Firefox/(\d+)`)
var allBrowserProfiles []BrowserProfile
func init() {
for _, userAgent := range ChromeUserAgents {
version := extractChromeVersion(userAgent)
fingerprint := matchChromeFingerprint(version)
allBrowserProfiles = append(allBrowserProfiles, BrowserProfile{
UserAgent: userAgent,
Headers: ChromeHeaders,
TLSFingerprint: fingerprint,
BrowserFamily: "chrome",
})
}
for _, userAgent := range FirefoxUserAgents {
version := extractFirefoxVersion(userAgent)
fingerprint := matchFirefoxFingerprint(version)
allBrowserProfiles = append(allBrowserProfiles, BrowserProfile{
UserAgent: userAgent,
Headers: FirefoxHeaders,
TLSFingerprint: fingerprint,
BrowserFamily: "firefox",
})
}
}
func extractChromeVersion(userAgent string) int {
matches := chromeVersionPattern.FindStringSubmatch(userAgent)
if len(matches) < 2 {
return 0
}
version, err := strconv.Atoi(matches[1])
if err != nil {
return 0
}
return version
}
func extractFirefoxVersion(userAgent string) int {
matches := firefoxVersionPattern.FindStringSubmatch(userAgent)
if len(matches) < 2 {
return 0
}
version, err := strconv.Atoi(matches[1])
if err != nil {
return 0
}
return version
}
func matchChromeFingerprint(version int) tls.ClientHelloID {
for _, mapping := range ChromeFingerprintsByVersion {
if version >= mapping.MinVersion {
return mapping.Fingerprint
}
}
return tls.HelloChrome_58
}
func matchFirefoxFingerprint(version int) tls.ClientHelloID {
for _, mapping := range FirefoxFingerprintsByVersion {
if version >= mapping.MinVersion {
return mapping.Fingerprint
}
}
return tls.HelloFirefox_55
}
func SelectRandomProfile() BrowserProfile {
return allBrowserProfiles[rand.Intn(len(allBrowserProfiles))]
}
|
