Python Paramiko模块

1、paramiko自动登录网络设备抓取配置信息

# !/usr/bin/env python
# -*- coding:utf-8 -*-

import paramiko

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname='192.168.1.2', port=22, username='cisco', password='cisco')
client = ssh.invoke_shell()

def run_cmd(cmd, endswith):  # 形参：cmd命令，结束符
    buff = ''
    client.send(cmd)
    while not buff.endswith(endswith):
        resp = str(client.recv(1024), 'utf-8')
        buff += resp
    return buff

res = ''
res += run_cmd('enable\n', 'Password: ')
res += run_cmd('cisco\n', '#')
res += run_cmd('terminal length 0\n', '#')
res += run_cmd('show run\n', '#')
print(res)
ssh.close()

# <H3C> screen-length disable     # no screen-length disable (华三)
# Cisco# terminal length 0        # terminal no length (思科)
# MaiPu# more off                 # more on (迈普)
# <HuaWei> screen-length 0 temporary    # undo screen-length temporary (华为)
# RuiJie# terminal length 0       # terminal no length (锐捷)
# ZTE# terminal length 0          # no terminal length (中兴)

# !/usr/bin/env python
# -*- coding:utf-8 -*-

import paramiko
from paramiko.ssh_exception import NoValidConnectionsError, AuthenticationException

def sshconnect(command, hostname):
    """
    :param command: 格式必需为list
    :param hostname: 单个主机IP地址
    :return: 用户不存在或连接超时返回错误
    """
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        ssh.connect(hostname=hostname, port=22, username='USERNAME', password='PASSWORD')
    except (NoValidConnectionsError, TimeoutError, AuthenticationException) as e:
        return {'status': False, 'ip': hostname}
    else:
        client = ssh.invoke_shell()
        for i in range(0, len(command)):
            buff = ''
            client.send(command[i] + '\n')
            while not buff.endswith('#'):
                resp = str(client.recv(1024), 'utf-8')
                buff += resp
    ssh.close()

if __name__ == '__main__':
    sshconnect('['show version','show run']', '192.168.1.1')

# !/usr/bin/env python
# -*- coding:utf-8 -*-

import paramiko
from .conndb import condb


class comupload(object):
    def __init__(self, hostname, project=None, username='root', port=22, password='123456'):
        # self.private_key = paramiko.RSAKey.from_private_key_file('/root/.ssh/id_rsa')
        self.hostname = hostname
        self.username = username
        self.port = port
        self.project = project
        self.password = password
        self.transport = paramiko.Transport((self.hostname, self.port))
        # self.transport.connect(username=self.username, pkey=self.private_key)
        self.transport.connect(username=self.username, password=self.password)
        self.sftp = paramiko.SFTPClient.from_transport(self.transport)
        self.client = paramiko.SSHClient()
        self.client.set_missing_host_key_policy(paramiko.AutoAddPolicy())  # 允许连接know_hosts文件里不存在的主机
        # self.client.connect(hostname=self.hostname, port=self.port, username=self.username, pkey=self.private_key)
        self.client.connect(hostname=self.hostname, port=self.port, username=self.username, password=self.password)

    def upload(self, local_path, remote_path):
        # 将文件上传至服务器
        self.sftp.put(local_path, remote_path, callback=self.__callback)
        # if self.project:
        #     self.sftp.put(local_path, remote_path, callback=self.__callback)
        # else:
        #     self.sftp.put(local_path, remote_path)

    def download(self, remotepath, localpath):
        # 将文件下载到本地
        self.sftp.get(remotepath, localpath, callback=self.__callback)

    def comand(self, com):
        # 执行命令,返回命令结果
        stdin, stdout, stderr = self.client.exec_command(com)
        result = stdout.read().decode()
        reserr = stderr.read().decode()
        return result, reserr

    def exec_com(self, com):
        # 执行命令,返回命令结果和状态码
        self.channel = self.client.get_transport().open_session()
        self.channel.exec_command(com)
        stdout = self.channel.makefile().read()
        stderr = self.channel.makefile_stderr().read()
        exit_code = self.channel.recv_exit_status()
        self.channel.close()
        return stdout, stderr, exit_code

    def __callback(self, send, total):
        '''
        需求： 制作传输进度条
        1. CallBack方法获取总字节数和已传输字节数
        2. 通过计算获取已传输字节数占总字节数的百分比
        3. 制作进度条
        :param send:
        :param total:
        :return:
        '''
        end = '' if send != total else '\n'
        # 上传进度条
        print('\r    |{:<50}| {:.2f} M [{:.2f}%]'.format('#' * int(send * 100 / total / 2), send / 1024 / 1024, send * 100 / total), end=end, flush=True)
    #     sendsize = send / 1024 / 1024
    #     percent = send * 100 / total
    #     condb(
    #         'UPDATE `project` SET `sendsize`="{}",`percent`="{}" WHERE `name`="{}";'.format(sendsize, percent,self.project))

    def sshclose(self):
        # 关闭连接
        self.sftp.close()
        self.client.close()


if __name__ == '__main__':
    ssh_sftp = comupload('172.17.0.5')
    ssh_sftp.upload('test.tar.gz', '/root/test.tar.gz')
    r, re = ssh_sftp.comand('echo hello')
    res, reserr, exit_code = ssh_sftp.exec_com('echo helloworld')
    ssh_sftp.sshclose()

#!/usr/bin/python3.8
# -*- coding:UTF-8 -*-
# pip install func-timeout
# 执行命令返回命令结果

import re
import time
from paramiko import SSHClient, AutoAddPolicy
from func_timeout import func_set_timeout, exceptions


class RemoteCMD():
    """执行远程命令
    """

    def _init_connection(self,
                         ip: str,
                         port: int,
                         user: str,
                         passwd: str,
                         timeout: int = 5):
        """初始化连接（这里单独抽出可以避免 func 超时未关闭 session)

        Args:
            ip (str): IP 地址
            port (int): SSH 端口
            user (str): 用户名
            passwd (str): 密码
            timeout (int, optional): 超时时长(秒). Defaults to 5.

        Returns:
            paramiko object: paramiko 客户端对象
        """
        client = SSHClient()
        # client.load_system_host_keys()
        client.set_missing_host_key_policy(AutoAddPolicy())
        client.connect(hostname=ip,
                       port=int(port),
                       username=user,
                       password=passwd,
                       timeout=timeout,
                       allow_agent=False,
                       look_for_keys=False)

        client = client.invoke_shell()
        return client

    def _match_prompt(self, content: str, regex: str):
        """结束提示符匹配

        Args:
            content (str): 需要匹配的字符串
            regex (str): 需要匹配的关键词或正则表达式

        Returns:
            bool: True/False
        """
        if re.search(regex, content):
            return True

        return False

    @func_set_timeout(5)
    def _send_cmd(self,
                  client: object,
                  cmd: str,
                  recv_end_prompt: str,
                  recv_size: int = 512):
        """发送命令、拉取结果

        Args:
            client (object): paramiko 客户端对象
            cmd (str): 要执行的命令
            recv_size (int, optional): 单次拉取结果数据的大小. Defaults to 512.

        Returns:
            string: 执行结果
        """
        client.send(f"{str(cmd).strip()}\n")
        # 等待就绪
        while not client.recv_ready():
            time.sleep(0.2)

        result = ""
        while not self._match_prompt(result, recv_end_prompt):
            result += client.recv(recv_size).decode()

        return result

    def command(self,
                ip: str,
                port: int,
                user: str,
                passwd: str,
                cmd: str,
                end_prompt: str = r"#\s$",
                timeout: int = 5):
        """执行远程命令

        Args:
            ip (str): IP 地址
            port (int): SSH 端口
            user (port): 用户名
            passwd (str): 密码
            cmd (str): 要执行的命令
            timeout (int, optional): 超时时长(秒). Defaults to 5.

        Returns:
            tuple: (True/False, 执行结果或报错)
        """
        client = None
        try:
            client = self._init_connection(ip, port, user, passwd, timeout)

        except Exception as err:  # pylint: disable=broad-except
            return False, f"SSH 连接出现异常：{err}"

        try:
            return True, self._send_cmd(client, cmd, end_prompt)

        except exceptions.FunctionTimedOut:
            return False, "SSH 执行出现超时错误！"

        except Exception as err:  # pylint: disable=broad-except
            return False, f"SSH 执行出现其他异常：{err}"

        finally:
            if client:
                client.close()

if __name__ == '__main__':
    sshclient=RemoteCMD()
    print(sshclient.command('172.18.188.5',22,'root','123456','touch test.txt'))

2、scapy模块(网络扫描模块)
pip install scapy     #安装
from scapy.all import *    #导入
ls()：显示支持所有协议
lsc()：显示支持所有命令(就是发送、接受数据包函数)
help(协议|命令)：显示协议、命令详细帮助
注意：
        协议、命令不加单引号或者双引号，help(SNMP)、help(tcpdump)
[root@localhost ~]# git clone https://github.com/secdev/scapy.git
[root@localhost ~]# cd scapy/
[root@localhost ~]# ./run_scapy

相关链接：
       https://github.com/tecstack/forward       https://scapy.net
            #requests请求
       
           #paramiko模块使用
       https://github.com/fgimian/paramiko-expect/blob/master/examples/paramiko_expect-demo.py     # paramiko_expect模块
       https://blog.51cto.com/lizhenliang/1880856     # paramiko、fabric与pexpect