dotfiles/os/wireless/import.py

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"""
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Exports Wi-Fi networks configuration stored in pass
into a format readable by Nix.
"""
# TODO EAP ca_cert=/etc/ssl/... probably won't work. Example fix:
# builtins.fetchurl {
# url = "https://letsencrypt.org/certs/isrgrootx1.pem";
# sha256 = "sha256:1la36n2f31j9s03v847ig6ny9lr875q3g7smnq33dcsmf2i5gd92";
# }
import json
import os
import subprocess
import yaml
# passpy doesn't handle encoding properly, so doing this with calls
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PASSWORD_STORE = os.environ["PASSWORD_STORE_DIR"]
SUBFOLDER = "wifi"
def list_networks() -> list[str]:
paths = []
pass_folder = os.path.join(PASSWORD_STORE, SUBFOLDER)
for filename in os.listdir(pass_folder):
if not filename.endswith(".gpg"):
continue
filepath = os.path.join(pass_folder, filename)
if not os.path.isfile(filepath):
continue
file = filename[:-4]
path = os.path.join(SUBFOLDER, file)
paths.append(path)
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paths.sort()
return paths
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networks: list[dict[str, str | list[str] | int]] = list()
for path in list_networks():
proc = subprocess.run(["pass", path], stdout=subprocess.PIPE)
proc.check_returncode()
raw = proc.stdout.decode()
split = raw.split("\n")
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password = split[0]
data = yaml.safe_load("\n".join(split[1:])) or dict()
# Helpers to prevent repetition
suffixes = data.pop("suffixes", [""])
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data.setdefault("key_mgmt", ["WPA-PSK"] if password else ["NONE"])
if password:
if any(map(lambda m: "PSK" in m.split("-"), data["key_mgmt"])):
data["psk"] = password
if any(map(lambda m: "EAP" in m.split("-"), data["key_mgmt"])):
data["password"] = password
assert "ssid" in data, f"{path}: Missing SSID"
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data.setdefault("disabled", 0)
for suffix in suffixes:
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network = data.copy()
network["ssid"] += suffix
networks.append(network)
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with open("wireless_networks.json", "w") as fd:
json.dump(networks, fd, indent=4)