pvv-nixos-config/hosts/dagali/services/openldap.nix

122 lines
3.7 KiB
Nix

{ config, pkgs, lib, ... }:
{
services.openldap = let
dn = "dc=pvv,dc=ntnu,dc=no";
cfg = config.services.openldap;
heimdal = config.security.krb5.package;
in {
enable = true;
# NOTE: this is a custom build of openldap with support for
# perl and kerberos.
package = pkgs.openldap.overrideAttrs (prev: {
# https://github.com/openldap/openldap/blob/master/configure
configureFlags = prev.configureFlags ++ [
# Connect to slapd via UNIX socket
"--enable-local"
# Cyrus SASL
"--enable-spasswd"
# Reverse hostname lookups
"--enable-rlookups"
# perl
"--enable-perl"
];
buildInputs = prev.buildInputs ++ [
pkgs.perl
# NOTE: do not upstream this, it might not work with
# MIT in the same way
heimdal
];
extraContribModules = prev.extraContribModules ++ [
# https://git.openldap.org/openldap/openldap/-/tree/master/contrib/slapd-modules
"smbk5pwd"
];
});
settings = {
attrs = {
olcLogLevel = [ "stats" "config" "args" ];
# olcAuthzRegexp = ''
# gidNumber=.*\\\+uidNumber=0,cn=peercred,cn=external,cn=auth
# "uid=heimdal,${dn2}"
# '';
# olcSaslSecProps = "minssf=0";
};
children = {
"cn=schema".includes = let
# NOTE: needed for smbk5pwd.so module
schemaToLdif = name: path: pkgs.runCommandNoCC name {
buildInputs = with pkgs; [ schema2ldif ];
} ''
schema2ldif "${path}" > $out
'';
hdb-ldif = schemaToLdif "hdb.ldif" "${heimdal.src}/lib/hdb/hdb.schema";
samba-ldif = schemaToLdif "samba.ldif" "${heimdal.src}/tests/ldap/samba.schema";
in [
"${cfg.package}/etc/schema/core.ldif"
"${cfg.package}/etc/schema/cosine.ldif"
"${cfg.package}/etc/schema/nis.ldif"
"${cfg.package}/etc/schema/inetorgperson.ldif"
"${hdb-ldif}"
"${samba-ldif}"
];
# NOTE: installation of smbk5pwd.so module
# https://git.openldap.org/openldap/openldap/-/tree/master/contrib/slapd-modules/smbk5pwd
"cn=module{0}".attrs = {
objectClass = [ "olcModuleList" ];
olcModuleLoad = [ "${cfg.package}/lib/modules/smbk5pwd.so" ];
};
# NOTE: activation of smbk5pwd.so module for {1}mdb
"olcOverlay={0}smbk5pwd,olcDatabase={1}mdb".attrs = {
objectClass = [ "olcOverlayConfig" "olcSmbK5PwdConfig" ];
olcOverlay = "{0}smbk5pwd";
olcSmbK5PwdEnable = [ "krb5" "samba" ];
olcSmbK5PwdMustChange = toString (60 * 60 * 24 * 10000);
};
"olcDatabase={1}mdb".attrs = {
objectClass = [ "olcDatabaseConfig" "olcMdbConfig" ];
olcDatabase = "{1}mdb";
olcSuffix = dn;
# TODO: PW is supposed to be a secret, but it's probably fine for testing
olcRootDN = "cn=users,${dn}";
# TODO: replace with proper secret
olcRootPW.path = pkgs.writeText "olcRootPW" "pass";
olcDbDirectory = "/var/lib/openldap/test-smbk5pwd-db";
olcDbIndex = "objectClass eq";
olcAccess = [
''{0}to attrs=userPassword,shadowLastChange
by dn.exact=cn=users,${dn} write
by self write
by anonymous auth
by * none''
''{1}to dn.base=""
by * read''
/* allow read on anything else */
# ''{2}to *
# by cn=users,${dn} write by dn.exact=gidNumber=0+uidNumber=0+cn=peercred,cn=external write
# by * read''
];
};
};
};
};
}