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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.caddy;
configFile = pkgs.writeText "Caddyfile" cfg.config;
in {
options.services.caddy = {
enable = mkEnableOption "Caddy web server";
config = mkOption {
default = "";
example = ''
example.com {
gzip
minify
log syslog
root /srv/http
}
'';
type = types.lines;
description = "Verbatim Caddyfile to use";
};
ca = mkOption {
default = "https://acme-v02.api.letsencrypt.org/directory";
example = "https://acme-staging-v02.api.letsencrypt.org/directory";
type = types.string;
description = "Certificate authority ACME server. The default (Let's Encrypt production server) should be fine for most people.";
};
email = mkOption {
default = "";
type = types.string;
description = "Email address (for Let's Encrypt certificate)";
};
agree = mkOption {
default = false;
type = types.bool;
description = "Agree to Let's Encrypt Subscriber Agreement";
};
dataDir = mkOption {
default = "/var/lib/caddy";
type = types.path;
description = ''
The data directory, for storing certificates. Before 17.09, this
would create a .caddy directory. With 17.09 the contents of the
.caddy directory are in the specified data directory instead.
'';
};
package = mkOption {
default = pkgs.caddy;
defaultText = "pkgs.caddy";
type = types.package;
description = "Caddy package to use.";
};
};
config = mkIf cfg.enable {
systemd.services.caddy = {
description = "Caddy web server";
after = [ "network-online.target" ];
wantedBy = [ "multi-user.target" ];
environment = mkIf (versionAtLeast config.system.stateVersion "17.09")
{ CADDYPATH = cfg.dataDir; };
serviceConfig = {
ExecStart = ''
${cfg.package.bin}/bin/caddy -root=/var/tmp -conf=${configFile} \
-ca=${cfg.ca} -email=${cfg.email} ${optionalString cfg.agree "-agree"}
'';
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
Type = "simple";
User = "caddy";
Group = "caddy";
Restart = "on-failure";
StartLimitInterval = 86400;
StartLimitBurst = 5;
AmbientCapabilities = "cap_net_bind_service";
CapabilityBoundingSet = "cap_net_bind_service";
NoNewPrivileges = true;
LimitNPROC = 64;
LimitNOFILE = 1048576;
PrivateTmp = true;
PrivateDevices = true;
ProtectHome = true;
ProtectSystem = "full";
ReadWriteDirectories = cfg.dataDir;
};
};
users.users.caddy = {
group = "caddy";
uid = config.ids.uids.caddy;
home = cfg.dataDir;
createHome = true;
};
users.groups.caddy.gid = config.ids.uids.caddy;
};
}
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