在sendShell对象运行完list commandfactory[]之后,我需要帮助来终止SSH会话。
我有一个python脚本,使用paramiko通过ssh连接到cisco实验室路由器;在commandfactory[]中执行命令;并将结果输出到标准输出。一切似乎都正常,除了,在运行完所有命令之后,我似乎无法关闭SSH会话。在我终止脚本之前,会话只是保持打开状态。
import threading, paramiko, re, os
class ssh:
shell = None
client = None
transport = None
def __init__(self, address, username, password):
print("Connecting to server on ip", str(address) + ".")
self.client = paramiko.client.SSHClient()
self.client.set_missing_host_key_policy(paramiko.client.AutoAddPolicy())
self.client.connect(address, username=username, password=password, look_for_keys=False)
self.transport = paramiko.Transport((address, 22))
self.transport.connect(username=username, password=password)
thread = threading.Thread(target=self.process)
thread.daemon = True
thread.start()
def closeConnection(self):
if(self.client != None):
self.client.close()
self.transport.close()
def openShell(self):
self.shell = self.client.invoke_shell()
def sendShell(self):
self.commandfactory = []
print("\nWelcome to Command Factory. Enter Commands you want to execute.\nType \"done\" when you are finished:")
while not re.search(r"done.*", str(self.commandfactory)):
self.commandfactory.append(input(":"))
if self.commandfactory[-1] == "done":
del self.commandfactory[-1]
break
print ("Here are the commands you're going to execute:\n" + str(self.commandfactory))
if(self.shell):
self.shell.send("enable" + "\n")
self.shell.send("ilovebeer" + "\n")
self.shell.send("term len 0" + "\n")
for cmdcnt in range(0,len(self.commandfactory)):
self.shell.send(self.commandfactory[cmdcnt] + "\n")
self.shell.send("exit" + "\n")
self.shell.send("\n")
else:
print("Shell not opened.")
def process(self):
global connection
while True:
# Print data when available
if self.shell != None and self.shell.recv_ready():
alldata = self.shell.recv(1024)
while self.shell.recv_ready():
alldata += self.shell.recv(1024)
strdata = str(alldata, "utf8")
strdata.strip()
print(strdata, end = "")
sshUsername = "adrian"
sshPassword = "ilovebeer"
sshServer = "10.10.254.129"
connection = ssh(sshServer, sshUsername, sshPassword)
connection.openShell()
while True:
connection.sendShell()
我希望SSH会话在运行完“commandfactory”列表中的所有命令后终止(下面的代码)。
def sendShell(self):
self.commandfactory = []
print("\nWelcome to Command Factory. Enter Commands you want to execute.\nType \"done\" when you are finished:")
while not re.search(r"done.*", str(self.commandfactory)):
self.commandfactory.append(input(":"))
if self.commandfactory[-1] == "done":
del self.commandfactory[-1]
break
print ("Here are the commands you're going to execute:\n" + str(self.commandfactory))
if(self.shell):
self.shell.send("enable" + "\n")
self.shell.send("ilovebeer" + "\n")
self.shell.send("term len 0" + "\n")
for cmdcnt in range(0,len(self.commandfactory)):
self.shell.send(self.commandfactory[cmdcnt] + "\n")
self.shell.send("exit" + "\n")
self.shell.send("\n")
我的代码主要来自https://daanlenaerts.com/blog/2016/07/01/python-and-ssh-paramiko-shell/。非常感谢Daan Lenaerts的一个好博客。我确实根据自己的需要做了一些改变。
使用self.transport.close()结束sendShell函数,请参见http://docs.paramiko.org/en/2.0/api/transport.html
通过在迭代器之后添加self.shell.transport.close()可以解决这个问题。
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