diff options
Diffstat (limited to 'nixos/modules/services/networking/wpa_supplicant.nix')
| -rw-r--r-- | nixos/modules/services/networking/wpa_supplicant.nix | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/nixos/modules/services/networking/wpa_supplicant.nix b/nixos/modules/services/networking/wpa_supplicant.nix new file mode 100644 index 00000000000..dca398dd8be --- /dev/null +++ b/nixos/modules/services/networking/wpa_supplicant.nix @@ -0,0 +1,136 @@ +{ config, pkgs, ... }: + +with pkgs.lib; + +let + + cfg = config.networking.wireless; + configFile = "/etc/wpa_supplicant.conf"; + + ifaces = + cfg.interfaces ++ + optional (config.networking.WLANInterface != "") config.networking.WLANInterface; + +in + +{ + + ###### interface + + options = { + + networking.WLANInterface = mkOption { + default = ""; + description = "Obsolete. Use <option>networking.wireless.interfaces</option> instead."; + }; + + networking.wireless = { + enable = mkOption { + default = false; + description = '' + Whether to start <command>wpa_supplicant</command> to scan for + and associate with wireless networks. Note: NixOS currently + does not generate <command>wpa_supplicant</command>'s + configuration file, <filename>${configFile}</filename>. You + should edit this file yourself to define wireless networks, + WPA keys and so on (see + <citerefentry><refentrytitle>wpa_supplicant.conf</refentrytitle> + <manvolnum>5</manvolnum></citerefentry>). + ''; + }; + + interfaces = mkOption { + default = []; + example = [ "wlan0" "wlan1" ]; + description = '' + The interfaces <command>wpa_supplicant</command> will use. If empty, it will + automatically use all wireless interfaces. (Note that auto-detection is currently + broken on Linux 3.4.x kernels. See http://github.com/NixOS/nixos/issues/10 for + further details.) + ''; + }; + + driver = mkOption { + default = "nl80211,wext"; + description = "Force a specific wpa_supplicant driver."; + }; + + userControlled = { + enable = mkOption { + default = false; + description = '' + Allow normal users to control wpa_supplicant through wpa_gui or wpa_cli. + This is useful for laptop users that switch networks a lot. + + When you want to use this, make sure ${configFile} doesn't exist. + It will be created for you. + + Currently it is also necessary to explicitly specify networking.wireless.interfaces. + ''; + }; + + group = mkOption { + default = "wheel"; + example = "network"; + type = types.string; + description = "Members of this group can control wpa_supplicant."; + }; + }; + }; + }; + + + ###### implementation + + config = mkIf cfg.enable { + + environment.systemPackages = [ pkgs.wpa_supplicant ]; + + services.dbus.packages = [ pkgs.wpa_supplicant ]; + + jobs.wpa_supplicant = + { description = "WPA Supplicant"; + + wantedBy = [ "network.target" ]; + after = [ "systemd-udev-settle.service" ]; + + path = [ pkgs.wpa_supplicant ]; + + preStart = '' + touch -a ${configFile} + chmod 600 ${configFile} + '' + optionalString cfg.userControlled.enable '' + if [ ! -s ${configFile} ]; then + echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=${cfg.userControlled.group}" >> ${configFile} + echo "update_config=1" >> ${configFile} + fi + ''; + + script = + '' + ${if ifaces == [] then '' + for i in $(cd /sys/class/net && echo *); do + DEVTYPE= + source /sys/class/net/$i/uevent + if [ "$DEVTYPE" = "wlan" -o -e /sys/class/net/$i/wireless ]; then + ifaces="$ifaces''${ifaces:+ -N} -i$i" + fi + done + '' else '' + ifaces="${concatStringsSep " -N " (map (i: "-i${i}") ifaces)}" + ''} + exec wpa_supplicant -s -u -D${cfg.driver} -c ${configFile} $ifaces + ''; + }; + + powerManagement.resumeCommands = + '' + ${config.systemd.package}/bin/systemctl try-restart wpa_supplicant + ''; + + assertions = [{ assertion = !cfg.userControlled.enable || cfg.interfaces != []; + message = "user controlled wpa_supplicant needs explicit networking.wireless.interfaces";}]; + + }; + +} |