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|
{
config,
lib,
vhackPackages,
pkgs,
...
}: let
cfg = config.vhack.back;
mkUnit = repoPath: port: {
description = "Back service for ${repoPath}";
wants = ["network-online.target"];
after = ["network-online.target"];
wantedBy = ["default.target"];
environment = {
ROCKET_PORT = builtins.toString port;
};
serviceConfig = {
ExecStart = "${lib.getExe vhackPackages.back} ${lib.strings.escapeShellArg repoPath}";
# Ensure that the service can read the repository
# FIXME(@bpeetz): This has the implied assumption, that all the exposed git
# repositories are readable for the git group. This should not be necessary. <2024-12-23>
User = "git";
Group = "git";
DynamicUser = true;
Restart = "always";
# Sandboxing
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
PrivateDevices = true;
ProtectHostname = true;
ProtectClock = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectKernelLogs = true;
ProtectControlGroups = true;
RestrictAddressFamilies = ["AF_UNIX" "AF_INET" "AF_INET6"];
RestrictNamespaces = true;
LockPersonality = true;
MemoryDenyWriteExecute = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
RemoveIPC = true;
PrivateMounts = true;
# System Call Filtering
SystemCallArchitectures = "native";
SystemCallFilter = ["~@cpu-emulation @debug @keyring @mount @obsolete @privileged @setuid"];
};
};
mkVirtalHost = port: {
locations."/".proxyPass = "http://127.0.0.1:${builtins.toString port}";
enableACME = true;
forceSSL = true;
};
services =
lib.mapAttrs' (gitPath: config: {
name = builtins.replaceStrings ["/"] ["_"] "back-${gitPath}-${config.domain}";
value = mkUnit gitPath config.port;
})
cfg.repositories;
virtualHosts =
lib.mapAttrs' (gitPath: config: {
name = config.domain;
value = mkVirtalHost config.port;
})
cfg.repositories;
in {
options.vhack.back = {
enable = lib.mkEnableOption "Back issue tracker (inspired by tvix's panettone)";
repositories = lib.mkOption {
description = "An attibute set of repos to launch `back` services for.";
type = lib.types.attrsOf (lib.types.submodule {
options = {
enable = (lib.mkEnableOption "`back` for this repository.") // {default = true;};
domain = lib.mkOption {
type = lib.types.str;
description = "The domain to host this `back` instance on.";
};
port = lib.mkOption {
type = lib.types.port;
# TODO: This _should_ be an implementation detail, but I've no real approach to
# automatically generate them without encountering weird bugs. <2024-12-23>
description = "The port to use for this back instance. This must be unique.";
};
};
});
default = {};
};
};
config = lib.mkIf cfg.enable {
systemd = {inherit services;};
services.nginx = {inherit virtualHosts;};
};
}
|
