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  • windows pexpect ssh

    # -*-encoding:utf-8 -*-
    
    import logging
    
    import pexpect.popen_spawn
    
    
    class PSSH:
        def __init__(self):
            self.handle = None
    
        def ssh_ap(self, host, username, password, port=22, timeout=5, retry_times=3):
            """
            windows ssh AP 服务器;
            :param host: AP信息,如hostname 或IP;
            :param username: 登录AP使用的用户名;
            :param password: 登录AP使用的密码;
            :param port: ssh 使用的端口,默认为22;
            :param timeout: 登录设置的超时时间,输入用户名密码等待指定信息的时间,默认值为5;
            :param retry_times: 登录失败后,重试登录次数,默认值为3次;
            :return:登录成功返回True,否则False;
            """
            return self.__ssh_connect_ap(host, username, password, port=port, timeout=timeout, retry_times=retry_times,
                                         flag='this is ap shell')
    
        def ssh_ac(self, host, username, password, port=22, timeout=5, retry_times=3):
            """
            windows ssh AP 服务器;
            param host: AP信息,如hostname 或IP;
            :param username: 登录AP使用的用户名;
            :param password: 登录AP使用的密码;
            :param port: ssh 使用的端口,默认为22;
            :param timeout: 登录设置的超时时间,输入用户名密码等待指定信息的时间,默认值为5;
            :param retry_times: 登录失败后,重试登录次数,默认值为3次;
            :return:登录成功返回True,否则False;
    
            """
            return self.__ssh_connect_ap(host, username, password, port=port, timeout=timeout, retry_times=retry_times,
                                         flag='Current license state .*')
    
        def __ssh_connect_ap(self, host, username, password, port=22, timeout=5, retry_times=3, flag=None):
            """
            windows ssh 服务器;
            :param host: 服务器信息,如hostname 或IP;
            :param username: 登录使用的用户名;
            :param password: 登录使用的密码;
            :param port: ssh 使用的端口,默认为22;
            :param timeout: 登录设置的超时时间,输入用户名密码等待指定信息的时间,默认值为5;
            :param retry_times: 登录失败后,重试登录次数,默认值为3次;
            :param flag: 判断登录成功的标志;
            :return:登录成功返回True,否则False;
            """
            cmd = 'plink.exe -ssh -P {} {}'.format(port, host)
            login_status = False
            if host is None or host == '':
                logging.error('Host is invalid,please check')
            if username is None or host.strip() == '':
                logging.error('username is invalid,please check')
            else:
                logging.debug('ssh execute command:{}'.format(cmd))
                ssh_handle = pexpect.popen_spawn.PopenSpawn(cmd, timeout=timeout)
                self.handle = ssh_handle
                exp = self.handle.expect(['login as:', pexpect.EOF, pexpect.TIMEOUT], timeout=5)
                if exp == 0:
                    logging.info('input username:{}'.format(username))
                    self.handle.sendline(username)
                    exp1 = self.handle.expect(['password:', pexpect.EOF, pexpect.TIMEOUT], timeout=timeout)
                    if exp1 == 0:
                        logging.info(self.handle.before + self.handle.after)
                        self.handle.sendline(password)
                        logging.info('input password:{}'.format(password))
                        exp11 = ssh_handle.expect([flag, 'Access denied', pexpect.EOF, pexpect.TIMEOUT],
                                                  timeout=timeout)
                        if exp11 == 0:
                            login_status = True
                            logging.info('buffer value:{}'.format(ssh_handle.before + ssh_handle.after))
                            logging.info('login success')
                        elif exp11 == 1:
                            logging.error('login failed,username or password error')
                            for i in range(1, retry_times + 1):
                                logging.info('retry login,retry times:{}'.format(i))
                                self.handle.sendline(password)
                                exp12 = self.handle.expect(['this is ap shell', pexpect.EOF, pexpect.TIMEOUT],
                                                           timeout=timeout)
                                if exp12 == 0:
                                    logging.info('buffer value:{}'.format(ssh_handle.before + ssh_handle.after))
                                    logging.info('Login success')
                                    login_status = True
                                    break
                                elif exp12 == 1:
                                    self.__log_eof()
                                else:
                                    self.__log_timeout()
                        elif exp11 == 2:
                            self.__log_eof()
                        else:
                            self.__log_timeout()
                    elif exp == 1:
                        self.__log_eof()
                    else:
                        self.__log_timeout()
                elif exp == 1:
                    self.__log_eof()
                else:
                    self.__log_timeout()
            return login_status
    
        def __buf_get(self):
            return str(self.handle.before) + str(self.handle.after)
    
        def __log_eof(self):
            logging.error('Received  EOF signal,buf value:{}'.format(self.__buf_get()))
    
        def __log_timeout(self):
            logging.error('Received TIMEOUT,buf value:{}'.format(self.__buf_get()))
    
        def execute_cmd_by_ssh(self, cmd, timeout=5, prompt='>'):
            """
            ssh 命令执行,AC 与AP均可使用此方法,并将结果进行返回;
            :param cmd: 执行的命令;
            :param timeout:设置等待某信息的超时时间,默认为5s;
            :param prompt: 等待的提示符,默认为:>;
            :return: 返回执行消息的返回值,如果执行出现异常,超时等返回None;
            """
            self.handle.sendline(cmd)
            exp = self.handle.expect([prompt, pexpect.EOF, pexpect.TIMEOUT], timeout=timeout)
            res = None
            if exp == 0:
                res = self.handle.before + self.handle.after
            elif exp == 1:
                self.__log_eof()
            else:
                self.__log_timeout()
            return res
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  • 原文地址:https://www.cnblogs.com/juzib/p/14536994.html
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