使用golang实现telnet远程登录
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package mainimport ("bufio""fmt""net""os""strings")func main() {conn, err := net.Dial("tcp", "10.71.20.161:23")if err != nil {fmt.Sprint(os.Stderr, "Error: %s", err.Error())return}var buf [4096]byte//for {n, err := conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))fmt.Println((buf[0:n]))buf[1] = 252buf[4] = 252buf[7] = 252buf[10] = 252fmt.Println((buf[0:n]))n, err = conn.Write(buf[0:n])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))fmt.Println((buf[0:n]))buf[1] = 252buf[4] = 251buf[7] = 252buf[10] = 254buf[13] = 252fmt.Println((buf[0:n]))n, err = conn.Write(buf[0:n])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))fmt.Println((buf[0:n]))buf[1] = 252buf[4] = 252fmt.Println((buf[0:n]))n, err = conn.Write(buf[0:n])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))fmt.Println((buf[0:n]))/*buf[0] = 255buf[1] = 252buf[2] = 1buf[3] = 255buf[4] = 253buf[5] = 1buf[6] = 255buf[7] = 252buf[8] = 1buf[9] = 255buf[10] = 253buf[11] = 1fmt.Println((buf[0:12]))n, err = conn.Write(buf[0:12])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}*/n, err = conn.Write([]byte("admin\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))n, err = conn.Write([]byte("\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s\n", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))for {n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))if strings.HasSuffix(string(buf[0:n]), "> ") {break}}n, err = conn.Write([]byte("enable\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))n, err = conn.Write([]byte("terminal length 0\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))n, err = conn.Write([]byte("show port\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}for {n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))if strings.HasSuffix(string(buf[0:n]), "# ") {break}}n, err = conn.Write([]byte("show interface\n\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}for {n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))if strings.HasSuffix(string(buf[0:n]), "# ") {break}}n, err = conn.Write([]byte("show running-config\n"))if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}reader := bufio.NewReader(conn)if reader == nil {fmt.Fprintf(os.Stderr, "Create reader failed.")}for {n, err := reader.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))if strings.HasSuffix(string(buf[0:n]), "# ") {break}}/*for {n, err = conn.Read(buf[0:])if err != nil {fmt.Fprintf(os.Stderr, "Error: %s", err.Error())return}fmt.Println(string(buf[0:n]))fmt.Println(n)if strings.HasSuffix(string(buf[0:n]), "# ") {break}}*///}}
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