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/*
*
@author: sre
@date: 2022/8/9 0009
*
*/
package main
import (
"bufio"
"fmt"
"net"
"os"
"strconv"
"strings"
)
func main() {
lines, err := readlines("lic.txt")
if err != nil {
return
}
for _, line := range lines {
switch {
case strings.Index(line, "http://") == 0:
fmt.Println("http proxy ", line)
ipPort := strings.Split(line, "//")[1]
lenIpPort := len(strings.Split(ipPort, ":"))
ip := strings.Split(ipPort, ":")[0]
port := 80
if lenIpPort == 2 {
portStr := strings.Split(ipPort, ":")[1]
port, err = strconv.Atoi(portStr)
if err != nil {
fmt.Println("port error:", err)
writeline("fail.txt", line)
}
}
if isPortOpen(ip, port) {
fmt.Println("port is open")
fmt.Println("proxy ok")
writeline("success.txt", line)
} else {
fmt.Println("port is not open")
writeline("fail.txt", line)
}
case strings.Index(line, "https://") == 0:
fmt.Println("http proxy ", line)
ipPort := strings.Split(line, "//")[1]
lenIpPort := len(strings.Split(ipPort, ":"))
ip := strings.Split(ipPort, ":")[0]
port := 443
if lenIpPort == 2 {
portStr := strings.Split(ipPort, ":")[1]
port, err = strconv.Atoi(portStr)
if err != nil {
fmt.Println("port error:", err)
writeline("fail.txt", line)
}
}
if isPortOpen(ip, port) {
fmt.Println("port is open")
fmt.Println("proxy ok")
writeline("success.txt", line)
} else {
fmt.Println("port is not open")
writeline("fail.txt", line)
}
case strings.Index(line, "socks5://") == 0:
fmt.Println("socks5 proxy ", line)
case strings.Index(line, "socks4://") == 0:
fmt.Println("socks4 proxy ", line)
case strings.Index(line, "socks://") == 0:
fmt.Println("socks proxy ", line)
default:
fmt.Println("unknown proxy ", line)
}
}
}
// function to verify a tcp port is open or not
func isPortOpen(host string, port int) bool {
conn, err := net.Dial("tcp", host+":"+strconv.Itoa(port))
if err != nil {
return false
}
defer conn.Close()
return true
}
// readlines reads lines from a file and returns a slice of strings.
func readlines(filename string) ([]string, error) {
file, err := os.Open(filename)
if err != nil {
return nil, err
}
defer file.Close()
var lines []string
scanner := bufio.NewScanner(file)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
return lines, scanner.Err()
}
// writeline appends a line to a file.
func writeline(filename string, line string) error {
file, err := os.OpenFile(filename, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
if err != nil {
return err
}
defer file.Close()
_, err = file.WriteString(line + "\n")
return err
}