first pass at a hostapd service, rough around the edges

This commit is contained in:
Daniel Barlow 2022-10-01 18:53:20 +01:00
parent 8cff11d0a3
commit da8866a01a
5 changed files with 129 additions and 0 deletions

View file

@ -28,6 +28,7 @@ in {
}; };
pppoe = callPackage ./pppoe.nix {}; pppoe = callPackage ./pppoe.nix {};
dnsmasq = callPackage ./dnsmasq.nix {}; dnsmasq = callPackage ./dnsmasq.nix {};
hostapd = callPackage ./hostapd.nix {};
route = { name, target, via, dependencies }: route = { name, target, via, dependencies }:
oneshot { oneshot {
inherit name; inherit name;

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@ -0,0 +1,39 @@
# This is not a friendly interface to configuring a wireless AP: it
# just passes everything straight through to the hostapd config. When
# we've worked out what the sensible options are to expose, we'll add
# them as top-level attributes and rename params to extraParams
{
liminix
, hostapd
, lib
, writeText
}:
interface:
{
params ? {}
}:
let
inherit (liminix.services) longrun;
inherit (lib) concatStringsSep mapAttrsToList;
inherit (builtins) toString;
name = "${interface.device}.hostapd";
defaults = {
driver = "nl80211";
logger_syslog = "-1";
logger_syslog_level = 1;
ctrl_interface = "/run/hostapd";
ctrl_interface_group = 0;
};
conf = writeText "hostapd.conf"
(concatStringsSep
"\n"
(mapAttrsToList
(name: value: "${name}=${toString value}")
(defaults // params)));
in longrun {
inherit name;
run = "${hostapd}/bin/hostapd -d -i ${interface.device} -P /run/hostapd.pid -S ${conf}";
}

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@ -0,0 +1,43 @@
{ config, pkgs, lib, ... } :
let
inherit (pkgs.liminix.networking) interface address hostapd route dnsmasq;
inherit (pkgs.liminix.services) oneshot longrun bundle target output;
in rec {
services.loopback =
let iface = interface { type = "loopback"; device = "lo";};
in bundle {
name = "loopback";
contents = [
(address iface { family = "inet4"; address ="127.0.0.1"; prefixLength = 8;})
(address iface { family = "inet6"; address ="::1"; prefixLength = 128;})
];
};
services.wlan = interface { type = "hardware"; device = "wlan0"; };
services.hostap = hostapd (services.wlan) {
params = {
ssid = "liminix";
country_code = "GB";
hw_mode="g";
channel = "2";
wmm_enabled = 1;
ieee80211n = 1;
wpa_passphrase = "colourless green ideas";
auth_algs = 1; # 1=wpa2, 2=wep, 3=both
wpa = 2; # 1=wpa, 2=wpa2, 3=both
wpa_key_mgmt = "WPA-PSK";
wpa_pairwise = "TKIP CCMP"; # auth for wpa (may not need this?)
rsn_pairwise = "CCMP"; # auth for wpa2
};
};
services.default = target {
name = "default";
contents = with services; [
loopback
hostap
];
};
defaultProfile.packages = with pkgs; [ tcpdump ] ;
}

25
tests/wlan/run.sh Executable file
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@ -0,0 +1,25 @@
#!/usr/bin/env sh
cleanup(){
if test -e foo.pid && test -d /proc/`cat foo.pid` ; then
echo "killing qemu"
kill `cat foo.pid`
fi
}
trap cleanup EXIT
fatal(){
err=$?
echo "FAIL: command $(eval echo $BASH_COMMAND) exited with code $err"
exit $err
}
trap fatal ERR
NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1 nix-build '<liminix>' -I liminix-config=./configuration.nix --arg device "import <liminix/devices/qemu.nix>" -A outputs.default $*
../../scripts/run-qemu.sh \
--background foo.sock \
result/vmlinux result/squashfs \
nix-shell -p expect --run "expect wait-for-wlan.expect"

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@ -0,0 +1,21 @@
set timeout 60
spawn socat unix-connect:foo.sock -
send "\r\n"
expect "login:" { send "root\r\n" }
expect "/ #"
set FINISHED 0
set EXIT "1"
send "ls -l /run/uncaught-logs/current\r\n"
expect "/ #"
while { $FINISHED < 10 } {
send "grep AP-ENABLED /run/uncaught-logs/current || echo not\r\n"
expect {
"wlan0: AP-ENABLED" { set FINISHED 10; set EXIT 0; }
"not" { send_user "waiting ..." ; sleep 5 }
}
set FINISHED [ expr $FINISHED + 1 ]
}
exit $EXIT