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|
{ config, pkgs, lib, ... }:
let
inherit (builtins)
elem filter isBool ;
inherit (lib)
concatMapStrings concatStringsSep filterAttrs mapAttrsToList mkDefault
mkEnableOption mkIf mkOption ;
inherit (lib.types)
attrsOf bool either enum int lines nullOr package path str submodule ;
cfg = config.nixsap.apps.nginx;
explicit = filterAttrs (n: v: n != "_module" && v != null);
attrs = opts: submodule { options = opts; };
default = d: t: mkOption { type = t; default = d; };
optional = t: mkOption { type = nullOr t; default = null; };
show = v: if isBool v then (if v then "on" else "off") else toString v;
format = indent: set:
let mkEntry = k: v: "${indent}${k} ${show v};";
in concatStringsSep "\n" (mapAttrsToList mkEntry (explicit set));
mkServer = name: text: pkgs.writeText "nginx-${name}.conf" ''
# ${name}:
server {
${text}
}
'';
# Hardcode defaults that could be overriden in server context.
# Add options for http-only directives.
nginx-conf = pkgs.writeText "nginx.conf" ''
daemon off;
user ${cfg.user} ${cfg.user};
pid ${cfg.runDir}/nginx.pid;
${format "" (filterAttrs (n: _: ! elem n ["events" "http"]) cfg.conf)}
events {
${format " " cfg.conf.events}
}
http {
${cfg.conf.http.context}
${concatMapStrings (s: "include ${s};\n") (mapAttrsToList mkServer cfg.conf.http.servers)}
}
'';
exec = "${cfg.package}/bin/nginx -c ${nginx-conf} -p ${cfg.stateDir}";
enabled = {} != explicit cfg.conf.http.servers;
in {
options.nixsap.apps.nginx = {
package = mkOption {
description = "Nginx package";
type = package;
default = pkgs.nginx;
};
user = mkOption {
description = "User to run as";
type = str;
default = "nginx";
};
stateDir = mkOption {
description = "Directory holding all state for nginx to run";
type = path;
default = "/nginx";
};
logDir = mkOption {
description = ''
Nginx directory for logs. This is read-only. Use it in configuration
files of nginx itself or logrotate.
'';
type = path;
readOnly = true;
default = "${cfg.stateDir}/logs";
};
runDir = mkOption {
description = ''
Directory for sockets and PID-file.
UNIX-sockets created by nginx are world-writable.
So if you want some privacy, put sockets in this directory.
It is owned by nginx user and group, and has mode 0640.
'';
type = path;
readOnly = true;
default = "/run/nginx";
};
conf = default {} (attrs {
pcre_jit = optional bool;
timer_resolution = optional int;
worker_cpu_affinity = optional str;
worker_priority = optional int;
worker_processes = default "auto" (either int (enum ["auto"]));
worker_rlimit_core = optional int;
worker_rlimit_nofile = optional int;
events = default {} (attrs {
accept_mutex = optional bool;
accept_mutex_delay = optional int;
multi_accept = optional bool;
worker_aio_requests = optional int;
worker_connections = optional int;
});
http = default {} (attrs {
servers = default {} (attrsOf lines);
context = mkOption {
description = ''
Default directives in the http context. You normally don't
need to change it, because most of directives can be overriden
in server or location contexts. This parameter has a reasonale
default value which you should append in nixos modules, i. e. by
adding geoip directives or maps. Use `lib.mkForce` to completely
omit default directives.
'';
type = lines;
};
});
});
};
config = {
nixsap.apps.nginx.conf.http.context = ''
include ${cfg.package}/conf/mime.types;
default_type application/octet-stream;
# This is `combined` format with $remote_user replaced by $http_from.
# $http_from is provided by Sproxy: https://hackage.haskell.org/package/sproxy2
log_format sproxy '$remote_addr - $http_from [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"';
access_log off;
error_log stderr info;
gzip on;
keepalive_timeout 65;
sendfile on;
ssl_prefer_server_ciphers on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
tcp_nodelay on;
tcp_nopush on;
types_hash_max_size 2048;
# https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/
fastcgi_param HTTP_PROXY "";
proxy_set_header Proxy "";
'';
nixsap.system.users.daemons = mkIf enabled [ cfg.user ];
nixsap.apps.logrotate.conf.nginx = mkIf enabled {
files = [ "${cfg.logDir}/*.log" ];
directives = {
delaycompress = mkDefault true;
missingok = mkDefault true;
notifempty = mkDefault true;
rotate = mkDefault 14;
sharedscripts = true;
daily = mkDefault true;
create = mkDefault "0640 ${cfg.user} ${cfg.user}";
postrotate = pkgs.writeBashScript "logrotate-nginx-postrotate"
"systemctl kill -s SIGUSR1 --kill-who=main nginx.service";
};
};
systemd.services.nginx = mkIf enabled {
description = "web/proxy server";
wants = [ "keys.target" ];
after = [ "keys.target" "local-fs.target" "network.target" ];
wantedBy = [ "multi-user.target" ];
preStart = ''
rm -rf '${cfg.runDir}'
mkdir -p '${cfg.stateDir}/logs' '${cfg.runDir}'
chown -Rc '${cfg.user}:${cfg.user}' '${cfg.stateDir}' '${cfg.runDir}'
chmod -Rc u=rwX,g=rX,o= '${cfg.stateDir}' '${cfg.runDir}'
'';
serviceConfig = {
ExecStart = exec;
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
RestartSec = "10s";
StartLimitInterval = "1min";
Restart = "always";
};
};
};
}
|
