[Shell script] 自動開啟或關閉 vsftpd匿名登入機制

1 #!/bin/bash

2

3 vsftp_conf="/etc/vsftpd/vsftpd.conf"

4

5 if [ -f $vsftp_conf ]; then

6 if [ $# -ne 1 ]; then

7 echo "Parameters is not allow"

8 echo "usage: $0 on or $0 off"

9 exit 1

10 fi

11

12 case "$1" in

13 on) CMD='YES';;

14 off) CMD='NO';;

15 *)

16 echo "format error!"

17 exit 1

18 ;;

19 esac

20

21 if [ $CMD = 'YES' ]; then

22 sed 's/^.*anonymous_enable=.*/anonymous_enable=YES/' $vsftp_conf > /tmp/$$.vsftpd.conf

23 mv -f /tmp/$$.vsftpd.conf $vsftp_conf

24 /etc/init.d/vsftpd restart

25 else

26 sed 's/^.*anonymous_enable=.*/anonymous_enable=NO/' $vsftp_conf > /tmp/$$.vsftpd.conf

27 mv -f /tmp/$$.vsftpd.conf $vsftp_conf

28 /etc/init.d/vsftpd restart

29 fi

30 else echo "$vsftp_conf is not exist"

31 fi

說明:

列5 先判斷/etc/vsftpd/vsftpd.conf是否存在，若不存在則回報檔案不存在。(列30)

列6 判斷所傳入的引數是否為1個，若不是則回報錯誤並結束。 (列7~10)

列12-19 使用case，判斷是on, off或是格式有誤。

列21-24 若為on則設定anonymous_enable=YES，並重新啟動vsftpd。

列25-28 若為off則設定anonymous_enable=NO，並重新啟動vsftpd。

測試:

1. 允許匿名登入:

[root@centos bin]# ./vsftpd.sh on

Shutting down vsftpd: [ OK ]

Starting vsftpd for vsftpd: [ OK ]

[root@centos bin]# ftp localhost

Connected to localhost.localdomain.

220 (vsFTPd 2.0.5)

530 Please login with USER and PASS.

530 Please login with USER and PASS.

KERBEROS_V4 rejected as an authentication type

Name (localhost:root): ftp

331 Please specify the password.

Password:

230 Login successful.

Remote system type is UNIX.

Using binary mode to transfer files.

ftp>

2. 不允許匿名登入:

[root@centos bin]# ./vsftpd.sh off

Shutting down vsftpd: [ OK ]

Starting vsftpd for vsftpd: [ OK ]

[root@centos bin]# ftp localhost

Connected to localhost.localdomain.

220 (vsFTPd 2.0.5)

530 Please login with USER and PASS.

530 Please login with USER and PASS.

KERBEROS_V4 rejected as an authentication type

Name (localhost:root): ftp

331 Please specify the password.

Password:

530 Login incorrect.

Login failed.

ftp>

References:

Linux Shell 程式設計實務 P.305