|
@@ -0,0 +1,67 @@
|
|
|
|
|
+//端口扫描，扫描哪些端口在使用
|
|
|
|
|
+package main
|
|
|
|
|
+
|
|
|
|
|
+import (
|
|
|
|
|
+ "fmt"
|
|
|
|
|
+ "net"
|
|
|
|
|
+ "os"
|
|
|
|
|
+ "sync"
|
|
|
|
|
+ "time"
|
|
|
|
|
+)
|
|
|
|
|
+
|
|
|
|
|
+func checkPort(ip net.IP, port int, wg *sync.WaitGroup) {
|
|
|
|
|
+ tcpAddr := net.TCPAddr{
|
|
|
|
|
+ IP: ip,
|
|
|
|
|
+ Port: port,
|
|
|
|
|
+ }
|
|
|
|
|
+ ch := make(chan bool)
|
|
|
|
|
+ timeout := make(chan bool)
|
|
|
|
|
+ go func() {
|
|
|
|
|
+ time.Sleep(3 * time.Second)
|
|
|
|
|
+ timeout <- true
|
|
|
|
|
+ }()
|
|
|
|
|
+ go func() {
|
|
|
|
|
+ conn, err := net.DialTCP("tcp", nil, &tcpAddr)
|
|
|
|
|
+ ch <- true
|
|
|
|
|
+ if err == nil {
|
|
|
|
|
+ fmt.Printf("ip: %v port: %v \n", ip, port)
|
|
|
|
|
+ defer func() {
|
|
|
|
|
+ if conn != nil {
|
|
|
|
|
+ e := conn.Close()
|
|
|
|
|
+ if e != nil {
|
|
|
|
|
+ fmt.Println(e)
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+ }()
|
|
|
|
|
+ }
|
|
|
|
|
+ }()
|
|
|
|
|
+ select {
|
|
|
|
|
+ case <-timeout:
|
|
|
|
|
+ wg.Done()
|
|
|
|
|
+ case <-ch:
|
|
|
|
|
+ wg.Done()
|
|
|
|
|
+ }
|
|
|
|
|
+}
|
|
|
|
|
+func checkIp(ip string) bool {
|
|
|
|
|
+ if net.ParseIP(ip) == nil {
|
|
|
|
|
+ fmt.Println("非法ip地址")
|
|
|
|
|
+ return false
|
|
|
|
|
+ } else {
|
|
|
|
|
+ return true
|
|
|
|
|
+ }
|
|
|
|
|
+}
|
|
|
|
|
+func main() {
|
|
|
|
|
+
|
|
|
|
|
+ startTime := time.Now()
|
|
|
|
|
+ wg := sync.WaitGroup{}
|
|
|
|
|
+ wg.Add(65534)
|
|
|
|
|
+ ip := os.Args[1]
|
|
|
|
|
+ if checkIp(ip) {
|
|
|
|
|
+ for port := 1; port <= 65534; port++ {
|
|
|
|
|
+ go checkPort(net.ParseIP(ip), port, &wg)
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+ wg.Wait()
|
|
|
|
|
+ endTime := time.Now()
|
|
|
|
|
+ fmt.Printf("执行时间 %v", endTime.Sub(startTime))
|
|
|
|
|
+}
|
