stockholm/lass/2configs/radio.nix
2020-04-18 09:32:52 +02:00

337 lines
9.6 KiB
Nix

{ config, pkgs, ... }:
with import <stockholm/lib>;
let
name = "radio";
mainUser = config.users.extraUsers.mainUser;
admin-password = import <secrets/icecast-admin-pw>;
source-password = import <secrets/icecast-source-pw>;
music_dir = "/home/radio/music";
add_random = pkgs.writeDashBin "add_random" ''
${pkgs.mpc_cli}/bin/mpc add "$(${pkgs.findutils}/bin/find "${music_dir}/the_playlist" | grep -v '/other/' | grep '\.ogg$' | shuf -n1 | sed 's,${music_dir}/,,')"
'';
skip_track = pkgs.writeBashBin "skip_track" ''
set -eu
${add_random}/bin/add_random
music_dir=${escapeShellArg music_dir}
current_track=$(${pkgs.mpc_cli}/bin/mpc current -f %file%)
track_infos=$(${print_current}/bin/print_current)
skip_count=$(${pkgs.attr}/bin/getfattr -n user.skip_count --only-values "$music_dir"/"$current_track" || echo 0)
if [[ "$current_track" =~ ^the_playlist/music/.* ]] && [ "$skip_count" -le 2 ]; then
skip_count=$((skip_count+1))
${pkgs.attr}/bin/setfattr -n user.skip_count -v "$skip_count" "$music_dir"/"$current_track"
echo skipping: "$track_infos" skip_count: "$skip_count"
else
mkdir -p "$music_dir"/.graveyard/
mv "$music_dir"/"$current_track" "$music_dir"/.graveyard/
echo killing: "$track_infos"
fi
${pkgs.mpc_cli}/bin/mpc -q next
'';
good_track = pkgs.writeBashBin "good_track" ''
set -eu
music_dir=${escapeShellArg music_dir}
current_track=$(${pkgs.mpc_cli}/bin/mpc current -f %file%)
track_infos=$(${print_current}/bin/print_current)
if [[ "$current_track" =~ ^the_playlist/music/.* ]]; then
${pkgs.attr}/bin/setfattr -n user.skip_count -v 0 "$music_dir"/"$current_track"
else
mv "$music_dir"/"$current_track" "$music_dir"/the_playlist/music/
fi
echo good: "$track_infos"
'';
print_current = pkgs.writeDashBin "print_current" ''
echo "$(${pkgs.mpc_cli}/bin/mpc current -f %file%) \
$(${pkgs.mpc_cli}/bin/mpc current -f %file% \
| ${pkgs.gnused}/bin/sed 's@.*\(.\{11\}\)\.ogg@http://www.youtube.com/watch?v=\1@')"
'';
in {
users.users = {
"${name}" = rec {
inherit name;
group = name;
uid = genid_uint31 name;
description = "radio manager";
home = "/home/${name}";
useDefaultShell = true;
createHome = true;
openssh.authorizedKeys.keys = with config.krebs.users; [
lass.pubkey
lass-mors.pubkey
];
};
};
users.groups = {
"radio" = {};
};
krebs.per-user.${name}.packages = with pkgs; [
add_random
good_track
skip_track
print_current
ncmpcpp
mpc_cli
];
services.mpd = {
enable = true;
group = "radio";
musicDirectory = "${music_dir}";
extraConfig = ''
log_level "default"
auto_update "yes"
audio_output {
type "shout"
encoding "lame"
name "the_playlist_mp3"
host "localhost"
port "8000"
mount "/radio.mp3"
password "${source-password}"
bitrate "128"
format "44100:16:2"
user "source"
genre "good music"
}
audio_output {
type "shout"
encoding "ogg"
name "the_playlist_ogg"
host "localhost"
port "8000"
mount "/radio.ogg"
password "${source-password}"
bitrate "128"
format "44100:16:2"
user "source"
genre "good music"
}
'';
};
services.icecast = {
enable = true;
hostname = "radio.lassul.us";
admin.password = admin-password;
extraConf = ''
<mount>
<mount-name>/radio.mp3</mount-name>
<password>${source-password}</password>
</mount>
<mount>
<mount-name>/radio.ogg</mount-name>
<password>${source-password}</password>
</mount>
'';
};
krebs.iptables = {
tables = {
filter.INPUT.rules = [
{ predicate = "-p tcp --dport 8000"; target = "ACCEPT"; }
{ predicate = "-i retiolum -p tcp --dport 8001"; target = "ACCEPT"; }
];
};
};
systemd.timers.radio = {
description = "radio autoadder timer";
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = "*:0/1";
};
};
systemd.services.radio = let
autoAdd = pkgs.writeDash "autoAdd" ''
LIMIT=$1 #in secconds
timeLeft () {
playlistDuration=$(${pkgs.mpc_cli}/bin/mpc --format '%time%' playlist | ${pkgs.gawk}/bin/awk -F ':' 'BEGIN{t=0} {t+=$1*60+$2} END{print t}')
currentTime=$(${pkgs.mpc_cli}/bin/mpc status | ${pkgs.gawk}/bin/awk '/^\[playing\]/ { sub(/\/.+/,"",$3); split($3,a,/:/); print a[1]*60+a[2] }')
expr ''${playlistDuration:-0} - ''${currentTime:-0}
}
if test $(timeLeft) -le $LIMIT; then
${add_random}/bin/add_random
fi
${pkgs.mpc_cli}/bin/mpc play > /dev/null
'';
in {
description = "radio playlist autoadder";
after = [ "network.target" ];
restartIfChanged = true;
serviceConfig = {
ExecStart = "${autoAdd} 150";
};
};
systemd.services.radio-recent = let
recentlyPlayed = pkgs.writeDash "recentlyPlayed" ''
LIMIT=1000 #how many tracks to keep in the history
HISTORY_FILE=/tmp/played
while :; do
${pkgs.mpc_cli}/bin/mpc idle player > /dev/null
${pkgs.mpc_cli}/bin/mpc current -f %file%
done | while read track; do
echo "$(date -Is)" "$track" | tee -a "$HISTORY_FILE"
echo "$(tail -$LIMIT "$HISTORY_FILE")" > "$HISTORY_FILE"
done
'';
in {
description = "radio recently played";
after = [ "mpd.service" "network.target" ];
wantedBy = [ "multi-user.target" ];
restartIfChanged = true;
serviceConfig = {
ExecStart = recentlyPlayed;
};
};
# allow reaktor2 to modify files
systemd.services."reaktor2-the_playlist".serviceConfig.DynamicUser = mkForce false;
krebs.reaktor2.the_playlist = {
hostname = "irc.freenode.org";
port = "6697";
useTLS = true;
nick = "the_playlist";
username = "radio";
plugins = [
{
plugin = "register";
config = {
channels = [
"#the_playlist"
"#krebs"
];
};
}
{
plugin = "system";
config = {
workdir = config.krebs.reaktor2.the_playlist.stateDir;
hooks.PRIVMSG = [
{
activate = "match";
pattern = "^(?:.*\\s)?\\s*the_playlist:\\s*([0-9A-Za-z._][0-9A-Za-z._-]*)(?:\\s+(.*\\S))?\\s*$";
command = 1;
arguments = [2];
commands = {
skip.filename = "${skip_track}/bin/skip_track";
next.filename = "${skip_track}/bin/skip_track";
bad.filename = "${skip_track}/bin/skip_track";
good.filename = "${good_track}/bin/good_track";
nice.filename = "${good_track}/bin/good_track";
like.filename = "${good_track}/bin/good_track";
current.filename = "${print_current}/bin/print_current";
suggest.filename = pkgs.writeDash "suggest" ''
echo "$@" >> playlist_suggest
'';
};
}
];
};
}
];
};
krebs.htgen.radio = {
port = 8001;
user = {
name = "radio";
};
script = ''
case "$Method $Request_URI" in
"POST /skip")
${skip_track}/bin/skip_track
exit
;;
"POST /good")
${good_track}/bin/good_track
exit
;;
"POST /current")
${print_current}/bin/print_current
exit
;;
esac
'';
};
services.nginx = {
enable = true;
virtualHosts."radio.lassul.us" = {
forceSSL = true;
enableACME = true;
locations."/".extraConfig = ''
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://localhost:8000;
'';
locations."= /recent".extraConfig = ''
alias /tmp/played;
'';
};
virtualHosts."lassul.us".locations."= /the_playlist".extraConfig = let
html = pkgs.writeText "index.html" ''
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>lassulus playlist</title>
</head>
<body>
<div style="display:inline-block;margin:0px;padding:0px;overflow:hidden">
<iframe src="https://kiwiirc.com/client/irc.freenode.org/?nick=kiwi_test|?&theme=cli#the_playlist" frameborder="0" style="overflow:hidden;overflow-x:hidden;overflow-y:hidden;height:95%;width:100%;position:absolute;top:0px;left:0px;right:0px;bottom:0px" height="95%" width="100%"></iframe>
</div>
<div style="position:absolute;bottom:1px;display:inline-block;background-color:red;">
<audio controls autoplay="autoplay"><source src="http://lassul.us:8000/radio.ogg" type="audio/ogg">Your browser does not support the audio element.</audio>
</div>
<!-- page content -->
</body>
</html>
'';
in ''
default_type "text/html";
alias ${html};
'';
};
services.syncthing.declarative.folders."the_playlist" = {
path = "/home/radio/music/the_playlist";
devices = [ "mors" "phone" "prism" "xerxes" ];
};
krebs.permown."/home/radio/music/the_playlist" = {
owner = "radio";
group = "syncthing";
umask = "0002";
};
}