nixpkgs/nixos/tests/wpa_supplicant.nix

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import ./make-test-python.nix ({ pkgs, lib, ...}:
{
name = "wpa_supplicant";
meta = with lib.maintainers; {
maintainers = [ rnhmjoj ];
};
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nodes.machine = { ... }: {
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imports = [ ../modules/profiles/minimal.nix ];
# add a virtual wlan interface
boot.kernelModules = [ "mac80211_hwsim" ];
# wireless access point
services.hostapd = {
enable = true;
wpa = true;
interface = "wlan0";
ssid = "nixos-test";
wpaPassphrase = "reproducibility";
};
# wireless client
networking.wireless = {
# the override is needed because the wifi is
# disabled with mkVMOverride in qemu-vm.nix.
enable = lib.mkOverride 0 true;
userControlled.enable = true;
interfaces = [ "wlan1" ];
fallbackToWPA2 = true;
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networks = {
# test WPA2 fallback
mixed-wpa = {
psk = "password";
authProtocols = [ "WPA-PSK" "SAE" ];
};
sae-only = {
psk = "password";
authProtocols = [ "SAE" ];
};
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# test network
nixos-test.psk = "@PSK_NIXOS_TEST@";
# secrets substitution test cases
test1.psk = "@PSK_VALID@"; # should be replaced
test2.psk = "@PSK_SPECIAL@"; # should be replaced
test3.psk = "@PSK_MISSING@"; # should not be replaced
test4.psk = "P@ssowrdWithSome@tSymbol"; # should not be replaced
};
# secrets
environmentFile = pkgs.writeText "wpa-secrets" ''
PSK_NIXOS_TEST="reproducibility"
PSK_VALID="S0m3BadP4ssw0rd";
# taken from https://github.com/minimaxir/big-list-of-naughty-strings
PSK_SPECIAL=",./;'[]\-= <>?:\"{}|_+ !@#$%^\&*()`~";
'';
};
};
testScript =
''
config_file = "/run/wpa_supplicant/wpa_supplicant.conf"
with subtest("Configuration file is inaccessible to other users"):
machine.wait_for_file(config_file)
machine.fail(f"sudo -u nobody ls {config_file}")
with subtest("Secrets variables have been substituted"):
machine.fail(f"grep -q @PSK_VALID@ {config_file}")
machine.fail(f"grep -q @PSK_SPECIAL@ {config_file}")
machine.succeed(f"grep -q @PSK_MISSING@ {config_file}")
machine.succeed(f"grep -q P@ssowrdWithSome@tSymbol {config_file}")
with subtest("WPA2 fallbacks have been generated"):
assert int(machine.succeed(f"grep -c sae-only {config_file}")) == 1
assert int(machine.succeed(f"grep -c mixed-wpa {config_file}")) == 2
# save file for manual inspection
machine.copy_from_vm(config_file)
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with subtest("Daemon is running and accepting connections"):
machine.wait_for_unit("wpa_supplicant-wlan1.service")
status = machine.succeed("wpa_cli -i wlan1 status")
assert "Failed to connect" not in status, \
"Failed to connect to the daemon"
with subtest("Daemon can connect to the access point"):
machine.wait_until_succeeds(
"wpa_cli -i wlan1 status | grep -q wpa_state=COMPLETED"
)
'';
})