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configs.services.radio: replace htgen with nginx and fcgiwrap
The port 8000 redirect is an nginx return, /skip, /good and radio-news.r
run as CGI through fcgiwrap. Port 8001 and the dash 0.5.12 pin go away.
author
lassulus
date
(Oct 7, 2026, 10:08 AM CEST)
commit
37b05265
37b052659c2a1a8e4646d018d0c17aace64b49a4
parent
9b6aa1cc
9b6aa1cc0ef43264f5f693ba01cbd5eb190d295a
+77
-96
+21
-53
configs/services/radio/default.nix
+21
-53
configs/services/radio/default.nix
···
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{
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self,
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config,
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pkgs,
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lib,
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...
···
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let
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name = "radio";
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stockholmPkgs = self.inputs.stockholm.packages.${pkgs.stdenv.hostPlatform.system};
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music_dir = "/var/music";
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-
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# dash 0.5.13 has a regression where `read` builtin discards input when stdin is a socket
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# This breaks htgen which uses tcpserver. Pin htgen's dash to 0.5.12 until upstream fixes it.
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# See: https://git.kernel.org/pub/scm/utils/dash/dash.git/commit/?id=1d072e9c3292281a7eee54c41fec117ff22723e5
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dash-0_5_12 = pkgs.dash.overrideAttrs (_old: rec {
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version = "0.5.12";
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src = pkgs.fetchurl {
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url = "http://gondor.apana.org.au/~herbert/dash/files/dash-${version}.tar.gz";
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hash = "sha256-akdKxG6LCzKRbExg32lMggWNMpfYs4W3RQgDDKSo8oo=";
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};
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});
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-
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htgen-fixed = stockholmPkgs.htgen.override {
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pkgs = pkgs // {
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dash = dash-0_5_12;
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};
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};
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skip_track = pkgs.writers.writeBashBin "skip_track" ''
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set -eu
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echo "$file": "$link"
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'';
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# nginx location running a track script through fcgiwrap
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trackAction = script: ''
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limit_except POST { deny all; }
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include ${config.services.nginx.package}/conf/fastcgi_params;
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fastcgi_param SCRIPT_FILENAME ${pkgs.writers.writeDash "${script.name}-cgi" ''
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printf 'Content-Type: text/plain; charset=UTF-8\r\n\r\n'
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${script}/bin/${script.name}
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''};
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fastcgi_pass unix:${config.services.fcgiwrap.instances.radio.socket.address};
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'';
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in
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{
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imports = [
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users.users = {
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"${name}" = rec {
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inherit name;
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isSystemUser = true;
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createHome = true;
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group = name;
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description = "radio manager";
···
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};
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networking.firewall.interfaces.retiolum.allowedTCPPorts = [
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8001
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8002
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];
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krebs.htgen.radio = {
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package = htgen-fixed;
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port = 8001;
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user = {
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name = "radio";
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};
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scriptFile = pkgs.writers.writeDash "radio" ''
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set -x
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case "''${Method:-} ''${Request_URI:-}" in
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"POST /skip")
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printf 'HTTP/1.1 200 OK\r\n'
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printf 'Connection: close\r\n'
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printf '\r\n'
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msg=$(${skip_track}/bin/skip_track)
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echo "$msg"
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exit
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;;
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"POST /good")
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printf 'HTTP/1.1 200 OK\r\n'
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printf 'Connection: close\r\n'
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printf '\r\n'
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msg=$(${good_track}/bin/good_track)
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echo "$msg"
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exit
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;;
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esac
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'';
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# POST /skip and /good, run as radio by fcgiwrap
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services.fcgiwrap.instances.radio = {
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process.user = name;
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process.group = name;
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socket.user = config.services.nginx.user;
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socket.group = config.services.nginx.group;
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};
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networking.firewall.allowedTCPPorts = [
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locations."= /current".extraConfig = ''
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proxy_pass http://localhost:8002;
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'';
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locations."= /skip".extraConfig = ''
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proxy_pass http://localhost:8001;
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'';
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locations."= /good".extraConfig = ''
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proxy_pass http://localhost:8001;
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'';
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locations."= /skip".extraConfig = trackAction skip_track;
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locations."= /good".extraConfig = trackAction good_track;
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locations."= /radio.sh".alias = pkgs.writeScript "radio.sh" ''
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#!/bin/sh
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trap 'exit 0' EXIT
+43
-34
configs/services/radio/news.nix
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configs/services/radio/news.nix
···
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{
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self,
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config,
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pkgs,
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...
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}:
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let
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news = "/home/radio-news/news";
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# GET / lists the news, POST / adds a JSON object { from, to, text, priority }
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newsCgi = pkgs.writers.writeDash "radio-news-cgi" ''
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case "$REQUEST_METHOD $DOCUMENT_URI" in
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"GET /")
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printf 'Content-Type: application/json\r\n\r\n'
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cat ${news} 2>/dev/null | ${pkgs.jq}/bin/jq -sc .
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;;
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"POST /")
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if entries=$(${pkgs.jq}/bin/jq -c '{ from, to, text, priority: (.priority // 0) }'); then
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printf '%s\n' "$entries" >> ${news}
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printf 'Status: 200 OK\r\n\r\n'
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else
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printf 'Status: 400 Bad Request\r\n\r\n'
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fi
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;;
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*)
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printf 'Status: 404 Not Found\r\n\r\n'
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;;
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esac
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'';
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send_to_radio = pkgs.writers.writeDashBin "send_to_radio" ''
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${pkgs.vorbis-tools}/bin/oggenc - |
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${self.packages.${pkgs.stdenv.hostPlatform.system}.cyberlocker-tools}/bin/cput news.ogg
···
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};
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services.nginx.virtualHosts."radio-news.r" = {
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locations."/" = {
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proxyPass = "http://localhost:7999";
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proxyWebsockets = true;
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extraConfig = ''
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add_header 'Access-Control-Allow-Origin' '*';
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add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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'';
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};
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locations."/".extraConfig = ''
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add_header 'Access-Control-Allow-Origin' '*';
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add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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include ${config.services.nginx.package}/conf/fastcgi_params;
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fastcgi_param SCRIPT_FILENAME ${newsCgi};
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fastcgi_pass unix:${config.services.fcgiwrap.instances.radio-news.socket.address};
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'';
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};
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imports = [
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./tts.nix
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];
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krebs.htgen.news = {
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port = 7999;
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user = {
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name = "radio-news";
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};
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script = ". ${pkgs.writers.writeDash "htgen-news" ''
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set -xefu
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case "''${Method:-GET} $Request_URI" in
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"GET /")
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printf 'HTTP/1.1 200 OK\r\n'
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printf 'Connection: close\r\n'
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printf '\r\n'
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cat "$HOME"/news | jq -sc .
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exit
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;;
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"POST /")
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payload=$(head -c "$req_content_length")
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printf '%s' "$payload" | jq 'has("from") and has("to") and has("text")' >&2
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printf '%s' "$payload" | jq -c '{ from: .from, to: .to, text: .text, priority: (.priority // 0)}' >> "$HOME"/news
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printf 'HTTP/1.1 200 OK\r\n'
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printf 'Connection: close\r\n'
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printf '\r\n'
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exit
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;;
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esac
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''}";
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services.fcgiwrap.instances.radio-news = {
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process.user = "radio-news";
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process.group = "radio-news";
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socket.user = config.services.nginx.user;
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socket.group = config.services.nginx.group;
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};
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users.users.radio-news = {
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isSystemUser = true;
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group = "radio-news";
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home = "/home/radio-news";
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createHome = true;
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};
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users.groups.radio-news = { };
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# debug
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environment.systemPackages = [
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-9
configs/services/radio/proxy.nix
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configs/services/radio/proxy.nix
···
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{ pkgs, ... }:
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{
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_: {
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services.nginx.virtualHosts."radio.lassul.us" = {
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enableACME = true;
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addSSL = true;
···
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'';
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};
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};
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krebs.htgen.radio-redirect = {
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port = 8000;
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scriptFile = pkgs.writers.writeDash "redir" ''
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printf 'HTTP/1.1 301 Moved Permanently\r\n'
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printf "Location: http://radio.lassul.us''${Request_URI}\r\n"
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printf '\r\n'
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'';
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services.nginx.virtualHosts.radio-redirect = {
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listen = [
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{
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addr = "0.0.0.0";
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port = 8000;
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}
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{
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addr = "[::]";
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port = 8000;
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}
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];
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locations."/".return = "301 http://radio.lassul.us$request_uri";
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};
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networking.firewall.allowedTCPPorts = [ 8000 ];
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}