# -*- coding: utf-8 -*-
"""探测目标服务器环境（SSH 只读探测，不做变更）"""
import paramiko

HOST, USER, PWD = '10.20.226.110', 'root', 'tzt123@123'

cli = paramiko.SSHClient()
cli.set_missing_host_key_policy(paramiko.AutoAddPolicy())
cli.connect(HOST, username=USER, password=PWD, timeout=10)

CMDS = [
    ('系统', 'cat /etc/os-release 2>/dev/null | head -2 || uname -a'),
    ('内核', 'uname -r'),
    ('python3', 'python3 --version 2>&1; which python3'),
    ('git', 'git --version 2>&1'),
    ('venv模块', 'python3 -m venv --help >/dev/null 2>&1 && echo venv-ok || echo venv-missing'),
    ('防火墙', 'systemctl is-active firewalld 2>/dev/null; systemctl is-active ufw 2>/dev/null; iptables -L INPUT -n 2>/dev/null | head -3'),
    ('8100占用', 'ss -tlnp 2>/dev/null | grep 8100 || echo 空闲'),
    ('/opt可写', 'test -d /opt && echo opt-exists; touch /opt/.wtest 2>/dev/null && rm /opt/.wtest && echo opt-writable'),
    ('外网(pypi)', 'curl -s -o /dev/null -w "%{http_code}" --max-time 8 https://pypi.tuna.tsinghua.edu.cn/simple/ || echo unreachable'),
]
for label, cmd in CMDS:
    _, out, err = cli.exec_command(cmd, timeout=20)
    o = out.read().decode('utf-8', 'ignore').strip()
    e = err.read().decode('utf-8', 'ignore').strip()
    print('【{}】{}'.format(label, o or e or '(空)'))

cli.close()