312 lines
11 KiB
Nix
312 lines
11 KiB
Nix
# /etc files related to networking, such as /etc/services.
|
|
|
|
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
cfg = config.networking;
|
|
dnsmasqResolve = config.services.dnsmasq.enable &&
|
|
config.services.dnsmasq.resolveLocalQueries;
|
|
hasLocalResolver = config.services.bind.enable || dnsmasqResolve;
|
|
|
|
resolvconfOptions = cfg.resolvconfOptions
|
|
++ optional cfg.dnsSingleRequest "single-request"
|
|
++ optional cfg.dnsExtensionMechanism "edns0";
|
|
in
|
|
|
|
{
|
|
|
|
options = {
|
|
|
|
networking.fqdn = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = "foo.example.com";
|
|
description = ''
|
|
Fully qualified domain name, if any.
|
|
'';
|
|
};
|
|
|
|
networking.hosts = lib.mkOption {
|
|
type = types.attrsOf ( types.listOf types.str );
|
|
default = {};
|
|
example = literalExample ''
|
|
{
|
|
"127.0.0.1" = [ "foo.bar.baz" ];
|
|
"192.168.0.2" = [ "fileserver.local" "nameserver.local" ];
|
|
};
|
|
'';
|
|
description = ''
|
|
Locally defined maps of hostnames to IP addresses.
|
|
'';
|
|
};
|
|
|
|
networking.extraHosts = lib.mkOption {
|
|
type = types.lines;
|
|
default = "";
|
|
example = "192.168.0.1 lanlocalhost";
|
|
description = ''
|
|
Additional verbatim entries to be appended to <filename>/etc/hosts</filename>.
|
|
'';
|
|
};
|
|
|
|
networking.hostConf = lib.mkOption {
|
|
type = types.lines;
|
|
default = "multi on";
|
|
example = ''
|
|
multi on
|
|
reorder on
|
|
trim lan
|
|
'';
|
|
description = ''
|
|
The contents of <filename>/etc/host.conf</filename>. See also <citerefentry><refentrytitle>host.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
|
|
'';
|
|
};
|
|
|
|
networking.dnsSingleRequest = lib.mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Recent versions of glibc will issue both ipv4 (A) and ipv6 (AAAA)
|
|
address queries at the same time, from the same port. Sometimes upstream
|
|
routers will systemically drop the ipv4 queries. The symptom of this problem is
|
|
that 'getent hosts example.com' only returns ipv6 (or perhaps only ipv4) addresses. The
|
|
workaround for this is to specify the option 'single-request' in
|
|
/etc/resolv.conf. This option enables that.
|
|
'';
|
|
};
|
|
|
|
networking.dnsExtensionMechanism = lib.mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
Enable the <code>edns0</code> option in <filename>resolv.conf</filename>. With
|
|
that option set, <code>glibc</code> supports use of the extension mechanisms for
|
|
DNS (EDNS) specified in RFC 2671. The most popular user of that feature is DNSSEC,
|
|
which does not work without it.
|
|
'';
|
|
};
|
|
|
|
networking.extraResolvconfConf = lib.mkOption {
|
|
type = types.lines;
|
|
default = "";
|
|
example = "libc=NO";
|
|
description = ''
|
|
Extra configuration to append to <filename>resolvconf.conf</filename>.
|
|
'';
|
|
};
|
|
|
|
networking.resolvconfOptions = lib.mkOption {
|
|
type = types.listOf types.str;
|
|
default = [];
|
|
example = [ "ndots:1" "rotate" ];
|
|
description = ''
|
|
Set the options in <filename>/etc/resolv.conf</filename>.
|
|
'';
|
|
};
|
|
|
|
networking.timeServers = mkOption {
|
|
default = [
|
|
"0.nixos.pool.ntp.org"
|
|
"1.nixos.pool.ntp.org"
|
|
"2.nixos.pool.ntp.org"
|
|
"3.nixos.pool.ntp.org"
|
|
];
|
|
description = ''
|
|
The set of NTP servers from which to synchronise.
|
|
'';
|
|
};
|
|
|
|
networking.proxy = {
|
|
|
|
default = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
This option specifies the default value for httpProxy, httpsProxy, ftpProxy and rsyncProxy.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
httpProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = cfg.proxy.default;
|
|
description = ''
|
|
This option specifies the http_proxy environment variable.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
httpsProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = cfg.proxy.default;
|
|
description = ''
|
|
This option specifies the https_proxy environment variable.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
ftpProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = cfg.proxy.default;
|
|
description = ''
|
|
This option specifies the ftp_proxy environment variable.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
rsyncProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = cfg.proxy.default;
|
|
description = ''
|
|
This option specifies the rsync_proxy environment variable.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
allProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = cfg.proxy.default;
|
|
description = ''
|
|
This option specifies the all_proxy environment variable.
|
|
'';
|
|
example = "http://127.0.0.1:3128";
|
|
};
|
|
|
|
noProxy = lib.mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
This option specifies the no_proxy environment variable.
|
|
If a default proxy is used and noProxy is null,
|
|
then noProxy will be set to 127.0.0.1,localhost.
|
|
'';
|
|
example = "127.0.0.1,localhost,.localdomain";
|
|
};
|
|
|
|
envVars = lib.mkOption {
|
|
type = types.attrs;
|
|
internal = true;
|
|
default = {};
|
|
description = ''
|
|
Environment variables used for the network proxy.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
config = {
|
|
|
|
warnings = optional (cfg.extraHosts != "")
|
|
"networking.extraHosts is deprecated, please use networking.hosts instead";
|
|
|
|
environment.etc =
|
|
{ # /etc/services: TCP/UDP port assignments.
|
|
"services".source = pkgs.iana-etc + "/etc/services";
|
|
|
|
# /etc/protocols: IP protocol numbers.
|
|
"protocols".source = pkgs.iana-etc + "/etc/protocols";
|
|
|
|
# /etc/rpc: RPC program numbers.
|
|
"rpc".source = pkgs.glibc.out + "/etc/rpc";
|
|
|
|
# /etc/hosts: Hostname-to-IP mappings.
|
|
"hosts".text =
|
|
let oneToString = set : ip : ip + " " + concatStringsSep " " ( getAttr ip set );
|
|
allToString = set : concatMapStringsSep "\n" ( oneToString set ) ( attrNames set );
|
|
userLocalHosts = optionalString
|
|
( builtins.hasAttr "127.0.0.1" cfg.hosts )
|
|
( concatStringsSep " " ( remove "localhost" cfg.hosts."127.0.0.1" ));
|
|
userLocalHosts6 = optionalString
|
|
( builtins.hasAttr "::1" cfg.hosts )
|
|
( concatStringsSep " " ( remove "localhost" cfg.hosts."::1" ));
|
|
otherHosts = allToString ( removeAttrs cfg.hosts [ "127.0.0.1" "::1" ]);
|
|
maybeFQDN = optionalString ( cfg.fqdn != null ) cfg.fqdn;
|
|
in
|
|
''
|
|
127.0.0.1 ${maybeFQDN} ${userLocalHosts} localhost
|
|
${optionalString cfg.enableIPv6 ''
|
|
::1 ${maybeFQDN} ${userLocalHosts6} localhost
|
|
''}
|
|
${otherHosts}
|
|
${cfg.extraHosts}
|
|
'';
|
|
|
|
# /etc/host.conf: resolver configuration file
|
|
"host.conf".text = cfg.hostConf;
|
|
|
|
# /etc/resolvconf.conf: Configuration for openresolv.
|
|
"resolvconf.conf".text =
|
|
''
|
|
# This is the default, but we must set it here to prevent
|
|
# a collision with an apparently unrelated environment
|
|
# variable with the same name exported by dhcpcd.
|
|
interface_order='lo lo[0-9]*'
|
|
'' + optionalString config.services.nscd.enable ''
|
|
# Invalidate the nscd cache whenever resolv.conf is
|
|
# regenerated.
|
|
libc_restart='${pkgs.systemd}/bin/systemctl try-restart --no-block nscd.service 2> /dev/null'
|
|
'' + optionalString (length resolvconfOptions > 0) ''
|
|
# Options as described in resolv.conf(5)
|
|
resolv_conf_options='${concatStringsSep " " resolvconfOptions}'
|
|
'' + optionalString hasLocalResolver ''
|
|
# This hosts runs a full-blown DNS resolver.
|
|
name_servers='127.0.0.1'
|
|
'' + optionalString dnsmasqResolve ''
|
|
dnsmasq_conf=/etc/dnsmasq-conf.conf
|
|
dnsmasq_resolv=/etc/dnsmasq-resolv.conf
|
|
'' + cfg.extraResolvconfConf + ''
|
|
'';
|
|
|
|
} // optionalAttrs config.services.resolved.enable {
|
|
"resolv.conf".source = "/run/systemd/resolve/resolv.conf";
|
|
} // optionalAttrs (config.services.resolved.enable && dnsmasqResolve) {
|
|
"dnsmasq-resolv.conf".source = "/run/systemd/resolve/resolv.conf";
|
|
};
|
|
|
|
networking.proxy.envVars =
|
|
optionalAttrs (cfg.proxy.default != null) {
|
|
# other options already fallback to proxy.default
|
|
no_proxy = "127.0.0.1,localhost";
|
|
} // optionalAttrs (cfg.proxy.httpProxy != null) {
|
|
http_proxy = cfg.proxy.httpProxy;
|
|
} // optionalAttrs (cfg.proxy.httpsProxy != null) {
|
|
https_proxy = cfg.proxy.httpsProxy;
|
|
} // optionalAttrs (cfg.proxy.rsyncProxy != null) {
|
|
rsync_proxy = cfg.proxy.rsyncProxy;
|
|
} // optionalAttrs (cfg.proxy.ftpProxy != null) {
|
|
ftp_proxy = cfg.proxy.ftpProxy;
|
|
} // optionalAttrs (cfg.proxy.allProxy != null) {
|
|
all_proxy = cfg.proxy.allProxy;
|
|
} // optionalAttrs (cfg.proxy.noProxy != null) {
|
|
no_proxy = cfg.proxy.noProxy;
|
|
};
|
|
|
|
# Install the proxy environment variables
|
|
environment.sessionVariables = cfg.proxy.envVars;
|
|
|
|
# This is needed when /etc/resolv.conf is being overriden by networkd
|
|
# and other configurations. If the file is destroyed by an environment
|
|
# activation then it must be rebuilt so that applications which interface
|
|
# with /etc/resolv.conf directly don't break.
|
|
system.activationScripts.resolvconf = stringAfter [ "etc" "specialfs" "var" ]
|
|
''
|
|
# Systemd resolved controls its own resolv.conf
|
|
rm -f /run/resolvconf/interfaces/systemd
|
|
${optionalString config.services.resolved.enable ''
|
|
rm -rf /run/resolvconf/interfaces
|
|
mkdir -p /run/resolvconf/interfaces
|
|
ln -s /run/systemd/resolve/resolv.conf /run/resolvconf/interfaces/systemd
|
|
''}
|
|
|
|
# Make sure resolv.conf is up to date if not managed by systemd
|
|
${optionalString (!config.services.resolved.enable) ''
|
|
${pkgs.openresolv}/bin/resolvconf -u
|
|
''}
|
|
'';
|
|
|
|
};
|
|
|
|
}
|