GO语言实现的端口扫描器分享

//GO语言  实现端口扫描

    //缺陷

    //port  无法设置成全局变量不知道怎么设置的

    //var l = list.New()   这个是数组操作并不是消息队列    跟消息队列功能类似

    //实现功能

    //实现生成 IP段

    //实现端口扫描

    //实现参数传入

    //写入文件到本地

    //main.go 58.215.20.30 58.215.201.30 80

    //文件名 开始IP 结束IP 扫描端口

    //QQ29295842   希望认识更多的朋友技术交流

    //QQ群367196336   go   golang WEB安全开发

    package main
    import (

        "container/list"

        "fmt"

        "net"

        "os"

        "strconv"

        "strings"

        "time"

    )
    func ip2num(ip string) int {

        canSplit := func(c rune) bool { return c == '.' }

        lisit := strings.FieldsFunc(ip, canSplit) //[58 215 20 30]

        //fmt.Println(lisit)

        ip1_str_int, _ := strconv.Atoi(lisit[0])

        ip2_str_int, _ := strconv.Atoi(lisit[1])

        ip3_str_int, _ := strconv.Atoi(lisit[2])

        ip4_str_int, _ := strconv.Atoi(lisit[3])

        return ip1_str_int<<24 | ip2_str_int<<16 | ip3_str_int<<8 | ip4_str_int

    }
    func num2ip(num int) string {

        ip1_int := (num & 0xff000000) >> 24

        ip2_int := (num & 0x00ff0000) >> 16

        ip3_int := (num & 0x0000ff00) >> 8

        ip4_int := num & 0x000000ff

        //fmt.Println(ip1_int)

        data := fmt.Sprintf("%d.%d.%d.%d", ip1_int, ip2_int, ip3_int, ip4_int)

        return data

    }
    func gen_ip(Aip1 int, Aip2 int) {

        index := Aip1

        for index < Aip2 {

            //fmt.Println(num2ip(index))

            // 入队, 压栈

            ip_data := num2ip(index)

            //fmt.Println(ip_data)

            l.PushBack(ip_data)

            index++

        }

    }
    func text_add(name string, data string) { //向文件中写入数据   text_add("file2.txt", "qqqqqqqqqqqqqqqqqqqqqqq")

        f, err := os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0x644)

        if err != nil {

            panic(err)

        }

        defer f.Close()
        _, err = f.WriteString(data)

        _, err = f.WriteString("\r\n")

        if err != nil {

            panic(err)

        }

    }
    //text_add("file2.txt", "qqqqqqqqqqqqqqqqqqqqqqq")

    var l = list.New()
    func socket_ip(host string, port string) bool {

        var (

            remote = host + ":" + port

        )
        tcpAddr, _ := net.ResolveTCPAddr("tcp4", remote) //转换IP格式

        //fmt.Printf("%s", tcpAddr)

        conn, err := net.DialTCP("tcp", nil, tcpAddr) //查看是否连接成功

        if err != nil {

            fmt.Printf("no==%s:%s\r\n", host, port)

            return false
        }

        defer conn.Close()

        fmt.Printf("ok==%s:%s\r\n", host, port)

        return true

    }
    func for_ip(port string) {

        now := time.Now()

        year, mon, day := now.UTC().Date()

        file_name := fmt.Sprintf("%d-%d-%d_%s", year, mon, day, port)

        for { //死循环

            if l.Len() <= 0 {

                fmt.Println("跳出循环")

                break //#跳出

            }

            // 出队  从前读取

            i1 := l.Front()

            l.Remove(i1)

            IP, _ := i1.Value.(string)

            if socket_ip(IP, port) {

                //OK

                //获取当前  日期作为文件名  在把IP写入进去

                text_add(file_name+"_ok.txt", IP)

            } //else {

            //  text_add(file_name+"_no.txt", IP)

            // }
            time.Sleep(time.Millisecond * 500) //纳秒为单位

        }

    }
    func main() {

        argsLen := len(os.Args)

        //fmt.Println(argsLen)

        if argsLen != 4 {

            fmt.Println("main.go 58.215.20.30 58.215.201.30 80")

        } else {

            gen_ip(ip2num(os.Args[1]), ip2num(os.Args[2]))

            for index := 0; index < 200; index++ {

                go for_ip(os.Args[3])

            }

            for {

                time.Sleep(1 * time.Second) //纳秒为单位

            }
        }

    }