288 lines
8.3 KiB
Nix
288 lines
8.3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.openldap;
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openldap = pkgs.openldap;
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dataFile = pkgs.writeText "ldap-contents.ldif" cfg.declarativeContents;
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configFile = pkgs.writeText "slapd.conf" ((optionalString cfg.defaultSchemas ''
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include ${pkgs.openldap.out}/etc/schema/core.schema
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include ${pkgs.openldap.out}/etc/schema/cosine.schema
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include ${pkgs.openldap.out}/etc/schema/inetorgperson.schema
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include ${pkgs.openldap.out}/etc/schema/nis.schema
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'') + ''
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${cfg.extraConfig}
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database ${cfg.database}
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suffix ${cfg.suffix}
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rootdn ${cfg.rootdn}
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${if (cfg.rootpw != null) then ''
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rootpw ${cfg.rootpw}
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'' else ''
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include ${cfg.rootpwFile}
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''}
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directory ${cfg.dataDir}
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${cfg.extraDatabaseConfig}
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'');
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configOpts = if cfg.configDir == null then "-f ${configFile}"
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else "-F ${cfg.configDir}";
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in
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{
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###### interface
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options = {
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services.openldap = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "
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Whether to enable the ldap server.
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";
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};
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user = mkOption {
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type = types.str;
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default = "openldap";
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description = "User account under which slapd runs.";
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};
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group = mkOption {
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type = types.str;
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default = "openldap";
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description = "Group account under which slapd runs.";
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};
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urlList = mkOption {
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type = types.listOf types.str;
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default = [ "ldap:///" ];
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description = "URL list slapd should listen on.";
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example = [ "ldaps:///" ];
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};
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dataDir = mkOption {
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type = types.path;
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default = "/var/db/openldap";
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description = "The database directory.";
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};
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defaultSchemas = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Include the default schemas core, cosine, inetorgperson and nis.
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This setting will be ignored if configDir is set.
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'';
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};
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database = mkOption {
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type = types.str;
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default = "mdb";
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description = ''
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Database type to use for the LDAP.
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This setting will be ignored if configDir is set.
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'';
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};
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suffix = mkOption {
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type = types.str;
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example = "dc=example,dc=org";
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description = ''
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Specify the DN suffix of queries that will be passed to this backend
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database.
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This setting will be ignored if configDir is set.
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'';
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};
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rootdn = mkOption {
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type = types.str;
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example = "cn=admin,dc=example,dc=org";
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description = ''
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Specify the distinguished name that is not subject to access control
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or administrative limit restrictions for operations on this database.
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This setting will be ignored if configDir is set.
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'';
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};
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rootpw = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Password for the root user.
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This setting will be ignored if configDir is set.
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Using this option will store the root password in plain text in the
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world-readable nix store. To avoid this the <literal>rootpwFile</literal> can be used.
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'';
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};
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rootpwFile = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Password file for the root user.
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The file should contain the string <literal>rootpw</literal> followed by the password.
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e.g.: <literal>rootpw mysecurepassword</literal>
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'';
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};
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logLevel = mkOption {
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type = types.str;
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default = "0";
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example = "acl trace";
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description = "The log level selector of slapd.";
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};
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configDir = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = "Use this optional config directory instead of using slapd.conf";
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example = "/var/db/slapd.d";
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = "
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slapd.conf configuration
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";
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example = literalExample ''
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'''
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include ${pkgs.openldap.out}/etc/schema/core.schema
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include ${pkgs.openldap.out}/etc/schema/cosine.schema
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include ${pkgs.openldap.out}/etc/schema/inetorgperson.schema
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include ${pkgs.openldap.out}/etc/schema/nis.schema
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database bdb
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suffix dc=example,dc=org
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rootdn cn=admin,dc=example,dc=org
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# NOTE: change after first start
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rootpw secret
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directory /var/db/openldap
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'''
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'';
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};
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declarativeContents = mkOption {
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type = with types; nullOr lines;
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default = null;
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description = ''
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Declarative contents for the LDAP database, in LDIF format.
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Note a few facts when using it. First, the database
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<emphasis>must</emphasis> be stored in the directory defined by
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<code>dataDir</code>. Second, all <code>dataDir</code> will be erased
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when starting the LDAP server. Third, modifications to the database
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are not prevented, they are just dropped on the next reboot of the
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server. Finally, performance-wise the database and indexes are rebuilt
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on each server startup, so this will slow down server startup,
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especially with large databases.
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'';
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example = ''
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dn: dc=example,dc=org
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objectClass: domain
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dc: example
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dn: ou=users,dc=example,dc=org
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objectClass = organizationalUnit
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ou: users
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# ...
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'';
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};
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extraDatabaseConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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slapd.conf configuration after the database option.
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This setting will be ignored if configDir is set.
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'';
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example = ''
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# Indices to maintain for this directory
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# unique id so equality match only
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index uid eq
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# allows general searching on commonname, givenname and email
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index cn,gn,mail eq,sub
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# allows multiple variants on surname searching
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index sn eq,sub
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# sub above includes subintial,subany,subfinal
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# optimise department searches
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index ou eq
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# if searches will include objectClass uncomment following
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# index objectClass eq
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# shows use of default index parameter
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index default eq,sub
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# indices missing - uses default eq,sub
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index telephonenumber
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# other database parameters
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# read more in slapd.conf reference section
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cachesize 10000
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checkpoint 128 15
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'';
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};
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};
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};
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meta = {
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maintainers = lib.maintainers.mic92;
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};
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###### implementation
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config = mkIf cfg.enable {
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assertions = [
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{
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assertion = cfg.configDir != null || cfg.rootpwFile != null || cfg.rootpw != null;
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message = "services.openldap: Unless configDir is set, either rootpw or rootpwFile must be set";
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}
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];
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environment.systemPackages = [ openldap ];
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systemd.services.openldap = {
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description = "LDAP server";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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preStart = ''
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mkdir -p /run/slapd
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chown -R "${cfg.user}:${cfg.group}" /run/slapd
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${optionalString (cfg.declarativeContents != null) ''
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rm -Rf "${cfg.dataDir}"
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''}
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mkdir -p "${cfg.dataDir}"
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${optionalString (cfg.declarativeContents != null) ''
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${openldap.out}/bin/slapadd ${configOpts} -l ${dataFile}
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''}
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chown -R "${cfg.user}:${cfg.group}" "${cfg.dataDir}"
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${openldap}/bin/slaptest ${configOpts}
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'';
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serviceConfig.ExecStart =
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"${openldap.out}/libexec/slapd -d '${cfg.logLevel}' " +
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"-u '${cfg.user}' -g '${cfg.group}' " +
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"-h '${concatStringsSep " " cfg.urlList}' " +
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"${configOpts}";
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};
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users.users.openldap =
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{ name = cfg.user;
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group = cfg.group;
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uid = config.ids.uids.openldap;
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};
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users.groups.openldap =
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{ name = cfg.group;
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gid = config.ids.gids.openldap;
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};
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};
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}
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