75 lines
1.7 KiB
Python
Executable File
75 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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from typing import Optional
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import subprocess
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import requests
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import pydantic
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class Server(pydantic.BaseModel):
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public_key: str
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endpoint: str
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class ServerConfig(pydantic.BaseModel):
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servers: list[Server]
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current: Server
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private_key: str
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def offline():
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try:
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requests.head("https://1.1.1.1", timeout=1)
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except IOError:
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return True
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else:
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return False
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def select_server() -> Optional[ServerConfig]:
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try:
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servers = ServerConfig.parse_file(
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"/snacks/wireguard/servers.json", encoding="utf-8"
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)
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except (IOError, pydantic.ValidationError):
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return None
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servers.servers.append(servers.current)
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servers.current = servers.servers.pop(0)
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return servers
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def write_json(servers: ServerConfig):
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try:
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with open("/snacks/wireguard/servers.json", mode="w", encoding="utf-8") as f:
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f.write(servers.json(indent=4))
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except IOError:
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pass
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def write_wg(server: Server, private_key: str):
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wg_conf = (
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"[Interface]\n"
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f"privatekey = {private_key}\n\n"
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"[Peer]\n"
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f"publickey = {server.public_key}\n"
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f"endpoint = {server.endpoint}\n"
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"persistentkeepalive = 20\n"
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"allowedips = 0.0.0.0/0, ::/0\n"
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)
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try:
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with open("/snacks/wireguard/wg.conf", mode="w", encoding="utf-8") as f:
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f.write(wg_conf)
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except IOError:
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pass
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def main():
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if offline() and (servers := select_server()):
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write_json(servers)
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write_wg(servers.current, servers.private_key)
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subprocess.run(["systemctl", "restart", "vpnclient-wg"], check=False)
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if __name__ == "__main__":
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main()
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