问题描述
限时送ChatGPT账号..我尝试使用 ruby Net::Telnet 连接 windows 2008 并执行一些命令.但是失败了.
I tried to use ruby Net::Telnet to connect windows 2008 and execute some commands. But it failed.
如果执行
tn = Net::Telnet::new("Host"=>"walnutserver","Port"=>2300,"Prompt"=> /C:.*>/)
tn.login("user","pass")
tn.cmd("dir")
tn.cmd("dir")
第一个 tn.cmd("dir")
成功,但第二个抛出异常.然后后续命令都失败了.经过实验,我发现任何windows命令都会导致这个.
the first tn.cmd("dir")
is success but the second one throws exceptions.And then subsequent commands all failed. After experimenting,I found that any windows command will cause this.
例外:
Timeout::Error: timed out while waiting for more data
from c:/troy/data/chef/chef-client11/chef/embedded/lib/ruby/1.9.1/net/telnet.rb:558:in `waitfor'
from c:/troy/data/chef/chef-client11/chef/embedded/lib/ruby/1.9.1/net/telnet.rb:697:in `cmd'
from (irb):20
from c:/troy/data/chef/chef-client11/chef/embedded/bin/irb:12:in `<main>'
使用sock.sysread()方法读取响应,发现终端被阻塞并显示dir\r\n0x00More?
use sock.sysread() method to read responding, I found that terminal is blocked and display dir\r\n0x00More?
如果执行则缓冲
tn = Net::Telnet::new("Host"=>"walnutserver","Port"=>2300,"Prompt"=> /C:.*>/)
tn.login("user","pass")
tn.cmd("ls")
tn.cmd("uname")
它没有正常运行.ls
、uname
是chef带来的一些linux命令,安装在目标机器上.
It't running normally. ls
、uname
are some linux commands brought by chef which installed in target machine.
ruby 版本:ruby 1.9.3p286 (2012-10-12) [i386-mingw32]
ruby version:ruby 1.9.3p286 (2012-10-12) [i386-mingw32]
我找到了别人在 Stackoverflow 上问同样的问题,但他没有得到解决方案.http://www.ruby-forum/topic/1516840
I found someone else asking the same question on Stackoverflow, but he didn't get the solution. http://www.ruby-forum/topic/1516840
需要你的帮助.
推荐答案
已解决.原因是 ruby net/telnet 库使用错误换行符.必须是 EOL(CR+LF) 但 CR+NULL .但我不知道是谁制造了错误,windows 还是 ruby?我写了一个猴子补丁如下:
solved. the reason is ruby net/telnet library use error newline seperator. Must be EOL(CR+LF) but CR+NULL . But I don't know who make the bug,windows or ruby? I write a monkey patch as below:
class Net::Telnet
def print(string)
string = string.gsub(/#{IAC}/no, IAC + IAC) if @options["Telnetmode"]
if @options["Binmode"]
self.write(string)
else
if @telnet_option["BINARY"] and @telnet_option["SGA"]
self.write(string.gsub(/\n/n, CR))
elsif @telnet_option["SGA"]
self.write(string.gsub(/\n/n, EOL)) ### fix here. reaplce CR+NULL bY EOL
else
self.write(string.gsub(/\n/n, EOL))
end
end
end
end
这篇关于ruby telnet 到 windows 2008,执行命令出错的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
更多推荐
[db:关键词]
发布评论