59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
"""
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Add the networks saved in wireless_networks to wpa_supplicant,
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without restarting it or touching its config file.
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"""
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import json
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import os
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import re
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import subprocess
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NETWORKS_FILE = "/etc/keys/wireless_networks.json"
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def wpa_cli(command: list[str]) -> list[bytes]:
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command.insert(0, "wpa_cli")
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process = subprocess.run(command, stdout=subprocess.PIPE)
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process.check_returncode()
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lines = process.stdout.splitlines()
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while lines[0].startswith(b"Selected interface"):
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lines.pop(0)
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return lines
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network_numbers: dict[str, int] = dict()
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networks_tsv = wpa_cli(["list_networks"])
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networks_tsv.pop(0)
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for network_line in networks_tsv:
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split = network_line.split(b"\t")
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number = int(split[0])
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ssid_bytes = split[1]
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ssid = re.sub(
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rb"\\x([0-9a-f]{2})",
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lambda d: int(d[1], base=16).to_bytes(),
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ssid_bytes,
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).decode()
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network_numbers[ssid] = number
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if os.path.isfile(NETWORKS_FILE):
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with open(NETWORKS_FILE) as fd:
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networks = json.load(fd)
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for network in networks:
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ssid = network["ssid"]
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if ssid in network_numbers:
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number = network_numbers[ssid]
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else:
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number = int(wpa_cli(["add_network"])[0])
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number_str = str(number)
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for key, value in network.items():
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if isinstance(value, str):
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value_str = f'"{value}"'
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elif isinstance(value, list):
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value_str = " ".join(value)
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else:
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value_str = str(value)
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ret = wpa_cli(["set_network", number_str, key, value_str])
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if ret[0] != b"OK":
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raise RuntimeError(f"Couldn't set {key} for {ssid}, got {ret}")
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