#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
import csv
import paramiko
import re

# ====================== 基础配置 ======================
IP_FILE = "ip.txt"
SSH_USER = "root"
SSH_PASS = "hp93000"
SSH_TIMEOUT = 3
# ======================================================

def print_help():
    help_text = """
用法：python check_proc.py 进程名称
示例：
    python check_proc.py trap
    python check_proc.py node_exporter
    python check_proc.py nginx
    python check_proc.py redis
"""
    print(help_text)
    sys.exit(1)

def clean_ip_file(filepath):
    """清洗ip.txt：去除\r、空行、首尾空格"""
    clean_ips = []
    with open(filepath, "r", encoding="utf-8") as f:
        for line in f:
            line = line.replace("\r", "").strip()
            if line:
                clean_ips.append(line)
    return clean_ips

def judge_ip_type(ip):
    """判断IPv4 / IPv6"""
    if ":" in ip:
        return "IPv6"
    return "IPv4"

def ssh_check_host(ip, proc_name, timeout):
    """SSH连接远程主机，获取主机名、系统版本、进程数量"""
    client = paramiko.SSHClient()
    # 自动信任主机密钥，等同Shell StrictHostKeyChecking=no
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        client.connect(
            hostname=ip,
            username=SSH_USER,
            password=SSH_PASS,
            timeout=timeout,
            banner_timeout=timeout
        )
        # 远程执行命令，和原Shell命令完全一致
        remote_cmd = f"""
hostname
cat /etc/os-release | grep PRETTY_NAME | cut -d'"' -f2 | head -n1
ps -ef | grep -v grep | grep -i '{proc_name}' | wc -l
        """.strip()
        stdin, stdout, stderr = client.exec_command(remote_cmd)
        output = stdout.read().decode("utf-8", errors="ignore").strip()
        err = stderr.read().decode("utf-8", errors="ignore")
        client.close()

        if not output:
            return {"hn": "命令无输出", "os": "---", "status": "未知"}
        
        lines = [line.strip() for line in output.splitlines() if line.strip()]
        hn = lines[0] if len(lines) >= 1 else "获取失败"
        os_ver = lines[1] if len(lines) >= 2 else "获取失败"
        proc_count = lines[2] if len(lines) >= 3 else "0"

        try:
            cnt = int(proc_count)
        except ValueError:
            cnt = 0
        
        if cnt >= 1:
            status = "已运行"
        else:
            status = "未运行"
        return {"hn": hn, "os": os_ver, "status": status}

    except paramiko.NoValidConnectionsError:
        return {"hn": "连接失败", "os": "---", "status": "不可达"}
    except paramiko.AuthenticationException:
        return {"hn": "密码错误", "os": "---", "status": "认证失败"}
    except paramiko.socket.timeout:
        return {"hn": "SSH超时", "os": "---", "status": "超时"}
    except Exception as e:
        return {"hn": f"异常:{str(e)}", "os": "---", "status": "异常"}

def main():
    # 读取入参进程名
    if len(sys.argv) != 2:
        print_help()
    target_proc = sys.argv[1].strip()
    csv_name = f"进程检查结果_{target_proc}.csv"

    # 清洗IP列表
    ip_list = clean_ip_file(IP_FILE)
    total_ip = len(ip_list)
    print(f"===== 开始批量检查【进程：{target_proc}】=====")
    print(f"待检测IP总数：{total_ip}\n")

    # 初始化CSV写入
    with open(csv_name, "w", encoding="utf-8-sig", newline="") as csv_f:
        writer = csv.writer(csv_f)
        # 表头，utf-8-sig保证Excel中文不乱码
        writer.writerow(["IP地址", "IP类型", "主机名", "系统版本", "进程状态"])
        
        for ip in ip_list:
            ip_type = judge_ip_type(ip)
            print(f"→ {ip}", end=" ")
            res = ssh_check_host(ip, target_proc, SSH_TIMEOUT)
            hn = res["hn"]
            os_v = res["os"]
            st = res["status"]
            print(f" [{st}]")
            writer.writerow([ip, ip_type, hn, os_v, st])

    print(f"\n===== 执行完成 =====")
    print(f"报告文件：{csv_name}")
    print(f"查询进程：{target_proc}")
    print(f"总检测IP数量：{total_ip}")

if __name__ == "__main__":
    main()