我需要正确的 tftp 语法来获取和放置文件。我的最终目标是使用busybox tftp(这应该是第二个问题),但即使尝试使用本地Ubuntu tftp客户端进行测试也失败了。
正如您在下面看到的,ftp
没有问题,只有tftp
问题。这是回送 ip,所以不应该与 iptables 相关(同样,ftp
没问题)。为了防止潜在的长路径问题,我只使用主目录进行测试。
xb@dnxb:/tmp$ grep anon_root /etc/vsftpd.conf
anon_root=/home/xiaobai/
xb@dnxb:/tmp$ cat /home/xiaobai/haha
7
xb@dnxb:/tmp$ ftp 127.0.0.1
Connected to 127.0.0.1.
220 (vsFTPd 3.0.3)
Name (127.0.0.1:xiaobai): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> get haha
local: haha remote: haha
200 PORT command successful. Consider using PASV.
150 Opening BINARY mode data connection for haha (2 bytes).
226 Transfer complete.
2 bytes received in 0.00 secs (6.5541 kB/s)
ftp> 221 Goodbye.
xb@dnxb:/tmp$ tftp 127.0.0.1
tftp> get haha
Error code 1: File not found
tftp> get /home/xiaobai/haha
Error code 1: File not found
tftp> get /home/xiaobai/haha output
Error code 1: File not found
tftp> put /home/xiaobai/haha
Error code 1: File not found
tftp> put haha
Error code 1: File not found
tftp> xb@dnxb:/tmp$ dpkg-query -W -f='${Description}\n\n${Homepage}\nMaintainer: ${Maintainer}\n\n' tftp
Trivial file transfer protocol client
Tftp is the user interface to the Internet TFTP (Trivial File Transfer
Protocol), which allows users to transfer files to and from a remote machine.
The remote host may be specified on the command line, in which case tftp uses
host as the default host for future transfers.
http://www.hcs.harvard.edu/~dholland/computers/netkit.html
Maintainer: Ubuntu Developers <[email protected]>
xb@dnxb:/tmp$
然后我按照这个答案:
xb@dnxb:/tmp$ tftp -v 127.0.0.1 -c get haha
usage: tftp host-name [port]
tftp> xb@dnxb:/tmp$
xb@dnxb:/tmp$ tftp -v 127.0.0.1 -c get /home/xiaobai/haha
usage: tftp host-name [port]
tftp> xb@dnxb:/tmp$
xb@dnxb:/tmp$ tftp -v 127.0.0.1 -c put haha
usage: tftp host-name [port]
tftp> xb@dnxb:/tmp$ tftp -v 127.0.0.1 -c put /home/xiaobai/haha
usage: tftp host-name [port]
tftp> ^F
?Invalid command
tftp> xb@dnxb:/tmp$
xb@dnxb:/tmp$
还有这个答案(评论或不评论似乎没有效果,我service vsftpd restart
在编辑后做了):
xb@dnxb:/tmp$ grep server_args /etc/xinetd.conf
# server_args = -c -s /tftpboot
xb@dnxb:/tmp$
如果有人可以回答有关具有不同选项的busybox tftp,那就更好了:
# busybox tftp
BusyBox v1.22.1 bionic (2017-11-04 12:54 +0800) multi-call binary.
Usage: tftp [OPTIONS] HOST [PORT]
Transfer a file from/to tftp server
-l FILE Local FILE
-r FILE Remote FILE
-g Get file
-p Put file
tftp 通常仅限于 /tftpboot 目录,我不希望它能够从用户主目录中获取某些内容。
还要检查文件权限。IIRC(已经有一段时间了),因为 tftp 是未经身份验证的文件,因此需要全球可读。