wifi_hotpot/wifi_manager.py

import subprocess
import re
import os
import psutil
import signal
import time
import datetime
from flask import Flask, render_template, request, redirect, url_for, make_response

try:
    from takway.board import OrangePi
    led_enabled = True
    orangepi = OrangePi()
except ImportError:
    led_enabled = False
    print("Error importing OrangePi")


app = Flask(__name__)

def close_app():
    if led_enabled:
        orangepi.set_led_off('red')
    # 获取当前Flask应用程序的进程ID
    flask_pid = os.getpid()
    
    # 获取所有名为'python3'的进程ID
    python_pids = [p.info['pid'] for p in psutil.process_iter(attrs=['pid', 'name']) if p.info['name'] == 'python3']
    
    # 关闭Flask应用程序进程
    os.kill(flask_pid, signal.SIGTERM)
    
    # 关闭Python进程
    for pid in python_pids:
        os.kill(pid, signal.SIGTERM)

def start_hotspot():
    try:
        subprocess.Popen('sudo systemctl start hotspot.service', shell=True)
        if led_enabled:
            orangepi.set_led_on('blue')
    except subprocess.CalledProcessError as e:
        print(f"{datetime.datetime.now()}: Error starting create_ap service: {e}")

def close_hotspot():
    # 关闭热点
    try:
        subprocess.Popen('sudo systemctl stop hotspot.service', shell=True)
        print(f"{datetime.datetime.now()}: Stopping create_ap service")
    except subprocess.CalledProcessError as e:
        print(f"{datetime.datetime.now()}: Error stopping hotspot: {e}")
    
    
# 检测 Wi-Fi 连接状态
def check_wifi_connection():
    cmd = "nmcli dev status"
    result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
    time.sleep(1)
    output = result.stdout.strip()
    lines = output.split("\n")[1:]  # Skip the header line
    for line in lines:
        columns = line.split()
        print(columns)
        if len(columns) >= 4 and columns[2] == "connected":
            wifi_ssid = columns[3]
            if led_enabled:
                orangepi.set_led_off('blue')
            return True, wifi_ssid
    return False

def scan_wifi():
    subprocess.run(['nmcli', 'dev', 'wifi', 'rescan'], check=True)
    cmd = "nmcli dev wifi"
    result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
    
    wifi_list = []
    output = result.stdout.strip()
    lines = output.split("\n")[1:]  # Skip the header line
    for line in lines:
        columns = line.split()
        print(columns)
        for i, column in enumerate(columns):
            print(f"{i}: {column}")
        exit()
        '''
        # 分割字符串以空格为分隔符
        columns = line.split()

        # 提取第一列和第三列的值
        mac_address = columns[0]
        
        ssid = " ".join(columns[1:3])
        if "Infra" in ssid:
            ssid = ssid.replace(" Infra", "")
        if ":" in ssid:
            # "72:A6:CC:8C:89:6C Takway-AI" 
            # 去除字符串中的MAC地址
            ssid = re.sub(r'\b\w{2}(:\w{2}){5}\b', '', ssid)

        # 提取第六列的强度值
        last_info = columns[4:8]
        # 去除所有的空格
        columns = line.replace(" ", "")
        # 提取"Mbit/s"后的三位以内数字
        strength = int(columns[columns.index("Mbit/s")+6:columns.index("Mbit/s")+8])
        
        # print("MAC地址:", mac_address)
        # print("SSID:", ssid)
        # print("强度:", strength)
        
        wifi_list.append({'ssid': ssid, 'signal': strength})
        if len(wifi_list) == 15:
            break
        '''
    # save wifi_list to file
    with open('wifi_list.txt', 'w') as f:
        for wifi in wifi_list:
            f.write(f"{wifi['ssid']},{wifi['signal']}\n")
    
    return wifi_list

'''
def scan_wifi():
    subprocess.run(['nmcli', 'dev', 'wifi', 'rescan'], check=True)
    cmd = "nmcli dev wifi"
    output = subprocess.run(cmd, shell=True, capture_output=True, text=True)
    
    wifi_list = []
    lines = output.decode().splitlines()
    for idx, line in enumerate(lines[1:]):
        print(f"{idx}: {line}")
        
        # 分割字符串以空格为分隔符
        columns = line.split()

        # 提取第一列和第三列的值
        mac_address = columns[0]
        
        ssid = " ".join(columns[1:3])
        if "Infra" in ssid:
            ssid = ssid.replace(" Infra", "")
        if ":" in ssid:
            # "72:A6:CC:8C:89:6C Takway-AI" 
            # 去除字符串中的MAC地址
            ssid = re.sub(r'\b\w{2}(:\w{2}){5}\b', '', ssid)

        # 提取第六列的强度值
        last_info = columns[4:8]
        # 去除所有的空格
        columns = line.replace(" ", "")
        # 提取"Mbit/s"后的三位以内数字
        strength = int(columns[columns.index("Mbit/s")+6:columns.index("Mbit/s")+8])
        
        # print("MAC地址:", mac_address)
        # print("SSID:", ssid)
        # print("强度:", strength)
        
        wifi_list.append({'ssid': ssid, 'signal': strength})
        if len(wifi_list) == 15:
            break
    
    # save wifi_list to file
    with open('wifi_list.txt', 'w') as f:
        for wifi in wifi_list:
            f.write(f"{wifi['ssid']},{wifi['signal']}\n")
    
    return wifi_list
'''

# 连接 Wi-Fi
def connect_wifi(ssid, password):
    # 连接到用户选择的 Wi-Fi 网络
    try:
        output = subprocess.check_output(['nmcli', 'dev', 'wifi', 'connect', ssid, 'password', password])
        output_str = output.decode('utf-8')  # 将输出转换为字符串
        if "successfully" in output_str:
            print(f"{datetime.datetime.now()}: Successfully connected to Wi-Fi: {ssid}")
            return True
        else:
            print(f"{datetime.datetime.now()}: Error connecting to Wi-Fi: {output_str}")
            return False
    except subprocess.CalledProcessError as e:
        print(f"{datetime.datetime.now()}: Error connecting to Wi-Fi: {e}")
        return False

# 关闭 Wi-Fi
def disconnect_wifi():
    try:
        output = subprocess.check_output(['nmcli', 'dev', 'disconnect', 'iface', 'wlan0'])
        time.sleep(1)
        output_str = output.decode('utf-8')  # 将输出转换为字符串
        if "successfully disconnected" in output_str:
            print(f"{datetime.datetime.now()}: Wi-Fi disconnected successfully")
        else:
            print(f"{datetime.datetime.now()}: Error disconnecting from Wi-Fi: {output_str}")
    except Exception as e:
        print(f"{datetime.datetime.now()}: Error disconnecting from Wi-Fi: {e}")



# 主页
@app.route('/')
def index():
    global wifi_list
    print(wifi_list)
    
    response = make_response(render_template('index.html', wifi_list=wifi_list))
    response.headers.set('Content-Type', 'text/html')
    response.headers.set('Apple-Web-App-Capable', 'yes')
    response.headers.set('Apple-Mobile-Web-App-Status-Bar-Style', 'black-translucent')
    return response
    
# 提交 Wi-Fi 信息
@app.route('/submit', methods=['POST'])
def submit():
    if led_enabled:
        orangepi.set_led_on('red')
    ssid = request.form['ssid']
    password = request.form['password']
    print(f"{datetime.datetime.now()}: Connecting to Wi-Fi: {ssid} with password {password}")
    connected = connect_wifi(ssid, password)
    
    time.sleep(5)
    # 检查是否成功连接Wi-Fi
    if check_wifi_connection() and connected:
        # connected successfully, close flask
        close_app()
        
    else:
        print(f"{datetime.datetime.now()}: Wi-Fi连接失败。")
        restart_hotspot()
        
    return redirect(url_for('index'))


if __name__ == '__main__':
    debug_mode = True  # 设置为 True 以跳过 Wi-Fi 连接状态检测
    if debug_mode:
        disconnect_wifi()

        scan_wifi()

    '''
    if led_enabled:
        orangepi.set_led_on('blue')
        
    if check_wifi_connection():
        print(f"{datetime.datetime.now()}: 系统已自动连接到 Wi-Fi 网络，退出程序")
        close_app()
    else:
        print(f"{datetime.datetime.now()}: 未连接到 Wi-Fi 网络")

    print(f"{datetime.datetime.now()}: Starting Flask server")
    print("----------------------------")
    wifi_list = scan_wifi()
    print("----------------------------")
    
    restart_hotspot()
    # 启动 Flask 服务器
    app.run(host='0.0.0.0', port=80)
    '''