地平线x3派 SoftAp热点开机启动

基于Python3.10 实现开启 SoftAp 热点
可以将python的执行放入开机启动服务中，，实现开机后自动开启热点功能
热点名称：开发板 Hostname
热点密码 12345678
热点地址 192.168.4.1
一下是python代码
""" 在地平线旭日X3派中开启 Soft AP 热点
热点名称  【hostname】
热点密码  12345678
热点地址  192.168.4.1

"""


import socket
import subprocess
import time
import os

def run_command(command):
    """运行系统命令并捕获错误信息"""
    try:
        result = subprocess.run(command, shell=True, check=True, text=True, capture_output=True)
        print(result.stdout)
    except subprocess.CalledProcessError as e:
        print(f"命令执行失败: {e.stderr}")

def get_hostname():
    """获取当前设备的主机名"""
    return socket.gethostname()

def clean_hostapd_ctrl_interface():
    """删除残留的控制接口文件"""
    ctrl_file = "/var/run/hostapd/wlan0"
    if os.path.exists(ctrl_file):
        print(f"发现残留控制接口文件 {ctrl_file}，正在删除...")
        os.remove(ctrl_file)

def reset_wireless_interface():
    """重置无线接口 wlan0"""
    print("重置 wlan0 接口...")
    run_command("sudo ifconfig wlan0 down")
    run_command("sudo ip addr flush dev wlan0")
    time.sleep(1)
    run_command("sudo ifconfig wlan0 up")

def stop_conflicting_services():
    """停止 wpa_supplicant 以避免冲突"""
    print("停止 wpa_supplicant 服务...")
    run_command("sudo systemctl stop wpa_supplicant")
    run_command("sudo systemctl mask wpa_supplicant")

def configure_hostapd(ssid):
    """配置 hostapd.conf 文件，使用主机名作为 SSID"""
    print(f"配置 /etc/hostapd/hostapd.conf，SSID: {ssid}")
    with open("/etc/hostapd/hostapd.conf", "w") as f:
        f.write(
            f"""interface=wlan0
driver=nl80211
ssid={ssid}
channel=6
hw_mode=g
ieee80211n=1
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
wpa_passphrase=12345678
"""
        )

def start_hostapd():
    """启动 hostapd 服务"""
    clean_hostapd_ctrl_interface()
    reset_wireless_interface()
    print("启动 hostapd 服务...")
    run_command("sudo hostapd -B /etc/hostapd/hostapd.conf")

def configure_dhcp():
    """配置 isc-dhcp-server 服务"""
    print("配置 isc-dhcp-server...")
    with open("/etc/dhcp/dhcpd.conf", "w") as f:
        f.write(
            """authoritative;
subnet 192.168.4.0 netmask 255.255.255.0 {
    range 192.168.4.100 192.168.4.254;
    option subnet-mask 255.255.255.0;
    option routers 192.168.4.1;
    option broadcast-address 192.168.4.31;
    default-lease-time 600;
    max-lease-time 7200;
}
"""
        )
    with open("/etc/default/isc-dhcp-server", "w") as f:
        f.write('INTERFACESv4="wlan0"\n')

    print("启动并启用 DHCP 服务器...")
    run_command("sudo systemctl start isc-dhcp-server")
    run_command("sudo systemctl enable isc-dhcp-server")

def main():
    """主程序：获取主机名、启用热点并配置 DHCP"""
    hostname = get_hostname()
    print(f"当前设备主机名：{hostname}")

    stop_conflicting_services()
    time.sleep(1)

    configure_hostapd(ssid=hostname)
    time.sleep(1)

    start_hostapd()
    time.sleep(1)

    run_command("sudo ifconfig wlan0 192.168.4.1 netmask 255.255.255.0")
    time.sleep(1)
    
    configure_dhcp()
    print(f"热点 '{hostname}' 已成功启动并运行！")


if __name__ == "__main__":
    main()
地平线x3派 SoftAp热点开机启动

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