From 77dd5eee24ff9a56883ff39fd2a928f59bb02c10 Mon Sep 17 00:00:00 2001 From: lassulus Date: Sat, 21 May 2016 13:47:09 +0200 Subject: l 2: add radio.nix --- lass/2configs/radio.nix | 133 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 lass/2configs/radio.nix diff --git a/lass/2configs/radio.nix b/lass/2configs/radio.nix new file mode 100644 index 000000000..8cc2a2be7 --- /dev/null +++ b/lass/2configs/radio.nix @@ -0,0 +1,133 @@ +{ config, pkgs, ... }: +let + name = "radio"; + mainUser = config.users.extraUsers.mainUser; + inherit (config.krebs.lib) genid; + + admin-password = import ; + source-password = import ; + +in { + users.users = { + "${name}" = rec { + inherit name; + group = name; + uid = genid name; + description = "radio manager"; + home = "/home/${name}"; + useDefaultShell = true; + createHome = true; + openssh.authorizedKeys.keys = [ + config.krebs.users.lass.pubkey + ]; + }; + }; + + users.groups = { + "radio" = {}; + }; + + krebs.per-user.${name}.packages = with pkgs; [ + ncmpcpp + mpc_cli + tmux + ]; + + security.sudo.extraConfig = '' + ${mainUser.name} ALL=(${name}) NOPASSWD: ALL + ''; + + services.mpd = { + enable = true; + group = "radio"; + musicDirectory = "/home/radio/the_playlist/music"; + extraConfig = '' + audio_output { + type "shout" + encoding "ogg" + name "my cool stream" + host "localhost" + port "8000" + mount "/radio.ogg" + + # This is the source password in icecast.xml + password "${source-password}" + + # Set either quality or bit rate + # quality "5.0" + bitrate "128" + + format "44100:16:1" + + # Optional Parameters + user "source" + # description "here is my long description" + # genre "jazz" + } # end of audio_output + + ''; + }; + + services.icecast = { + enable = true; + hostname = "config.krebs.build.host.name"; + admin.password = admin-password; + extraConf = '' + + ${source-password} + + ''; + }; + + krebs.iptables = { + tables = { + filter.INPUT.rules = [ + { predicate = "-p tcp --dport 8000"; target = "ACCEPT"; } + ]; + }; + }; + + systemd.timers.radio = { + description = "radio autoadder timer"; + wantedBy = [ "timers.target" ]; + + timerConfig = { + OnCalendar = "*:*"; + }; + }; + + systemd.services.radio = let + autoAdd = pkgs.writeDash "autoAdd" '' + LIMIT=$1 #in secconds + + addRandom () { + mpc add "$(mpc ls | shuf -n1)" + } + + timeLeft () { + playlistDuration=$(mpc --format '%time%' playlist | awk -F ':' 'BEGIN{t=0} {t+=$1*60+$2} END{print t}') + currentTime=$(mpc status | awk '/^\[playing\]/ { sub(/\/.+/,"",$3); split($3,a,/:/); print a[1]*60+a[2] }') + expr ''${playlistDuration:-0} - ''${currentTime:-0} + } + + if test $(timeLeft) -le $LIMIT; then + addRandom + fi + ''; + in { + description = "radio playlist autoadder"; + after = [ "network.target" ]; + + path = with pkgs; [ + gawk + mpc_cli + ]; + + restartIfChanged = true; + + serviceConfig = { + Restart = "always"; + ExecStart = "${autoAdd} 100"; + }; + }; +} -- cgit v1.2.3