76 lines
2 KiB
Nix
76 lines
2 KiB
Nix
# Configuration for the Name Service Switch (/etc/nsswitch.conf).
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{ config, lib, pkgs, ... }:
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with lib;
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let
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inherit (config.services.avahi) nssmdns;
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inherit (config.services.samba) nsswins;
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ldap = (config.users.ldap.enable && config.users.ldap.nsswitch);
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hostArray = [ "files" "mymachines" ]
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++ optionals nssmdns [ "mdns_minimal [!UNAVAIL=return]" ]
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++ optionals nsswins [ "wins" ]
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++ [ "dns" ]
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++ optionals nssmdns [ "mdns" ]
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++ ["myhostname" ];
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passwdArray = [ "files" ]
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++ optionals ldap [ "ldap" ]
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++ [ "mymachines" ];
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shadowArray = [ "files" ]
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++ optionals ldap [ "ldap" ];
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in {
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options = {
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# NSS modules. Hacky!
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system.nssModules = mkOption {
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type = types.listOf types.path;
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internal = true;
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default = [];
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description = ''
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Search path for NSS (Name Service Switch) modules. This allows
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several DNS resolution methods to be specified via
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<filename>/etc/nsswitch.conf</filename>.
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'';
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apply = list:
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{
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inherit list;
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path = makeLibraryPath list;
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};
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};
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};
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config = {
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# Name Service Switch configuration file. Required by the C
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# library. !!! Factor out the mdns stuff. The avahi module
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# should define an option used by this module.
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environment.etc."nsswitch.conf".text = ''
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passwd: ${concatStringsSep " " passwdArray}
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group: ${concatStringsSep " " passwdArray}
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shadow: ${concatStringsSep " " shadowArray}
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hosts: ${concatStringsSep " " hostArray}
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networks: files
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ethers: files
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services: files
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protocols: files
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rpc: files
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'';
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# Systemd provides nss-myhostname to ensure that our hostname
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# always resolves to a valid IP address. It returns all locally
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# configured IP addresses, or ::1 and 127.0.0.2 as
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# fallbacks. Systemd also provides nss-mymachines to return IP
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# addresses of local containers.
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system.nssModules = [ config.systemd.package.out ];
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};
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}
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