servers/mermet/openldap.nix

   1 { pkgs, lib, config, ... }:
   2 let
   3   inherit (builtins) baseNameOf readFile;
   4   inherit (lib) types;
   5   inherit (pkgs.lib) unlinesAttrs;
   6   inherit (config) networking;
   7   inherit (config.services) openldap;
   8   inherit (config.users) ldap;
   9   domainSuffix = "dc=" + lib.concatStringsSep ",dc=" (lib.splitString "." networking.domain);
  10 in
  11 {
  12 imports = [
  13   openldap/sourcephile.fr.nix
  14   openldap/autogeree.net.nix
  15 ];
  16 config = {
  17 users.ldap = {
  18   enable = false;
  19   server = "ldapi:///";
  20   base = "ou=posix,${domainSuffix}";
  21   bind = {
  22     #distinguishedName = "cn=admin,${domainSuffix}";
  23   };
  24   daemon = {
  25     enable = false;
  26     extraConfig = ''
  27       log syslog info
  28
  29       sasl_mech EXTERNAL
  30       # NOTE: nslcd cannot use SASL to bind to rootpwmoddn
  31       # which is the DN used by nslcd when passwd is run by root
  32       # to change the userPassword of an LDAP user.
  33       # SEE: https://www.reddit.com/r/linuxadmin/comments/53sxpl/how_do_i_configure_nslcd_to_use_a_sasl_external/d7w9awd/
  34       # Thus, use: ldappasswd -H ldapi:// -Y EXTERNAL uid=$user,ou=accounts,ou=posix,dc=sourcephile,dc=fr
  35     '';
  36   };
  37 };
  38 services.openldap = {
  39   enable    = true;
  40   dataDir   = "/var/db/ldap";
  41   configDir = "/var/db/slapd";
  42   urlList   = [ "ldapi:///" ]; # UNIX socket
  43   # sudo ldapsearch -LLL -H ldapi:// -D cn=admin,cn=config -Y EXTERNAL -b "" -s base supportedControl
  44   cnConfig = ''
  45     dn: cn=config
  46     objectClass: olcGlobal
  47     olcLogLevel: none
  48     # The tool-threads parameter sets the actual amount of CPU's
  49     # that is used for indexing.
  50     olcToolThreads: ${toString config.nix.maxJobs}
  51
  52     dn: cn={0}module,cn=config
  53     objectClass: olcModuleList
  54     olcModulePath: ${pkgs.openldap}/lib/modules
  55     #olcModuleLoad: pw-sha2
  56     #olcModuleLoad: pw-pbkdf2
  57     olcModuleLoad: back_mdb
  58
  59     # The first database is the special frontend database
  60     # whose settings are applied globally to all the other databases.
  61     # Beware that cn={0}module,cn=config must appear before
  62     # for enabling password schemes provided by the modules in olcPasswordHash.
  63     # ldapsearch -LLL -H ldapi:// -D cn=admin,cn=config -Y EXTERNAL -b 'olcDatabase={-1}frontend,cn=config' -s sub '*'
  64     dn: olcDatabase={-1}frontend,cn=config
  65     objectClass: olcDatabaseConfig
  66     objectClass: olcFrontendConfig
  67     # The maximum number of entries that is returned for a search operation
  68     olcSizeLimit: 500
  69     # Allow unlimited access to local connection from the local root user
  70     olcAccess: to *
  71       by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage
  72       by * break
  73     # Allow unauthenticated read access for schema and base DN autodiscovery
  74     olcAccess: to dn.exact=""
  75       by * read
  76     olcAccess: to dn.base="cn=Subschema"
  77       by * read
  78     # Hash algorithm to be used by LDAP Password Modify Extended Operation or the ppolicy overlay
  79     #olcPasswordHash: {PBKDF2-SHA256}
  80     olcPasswordHash: {SSHA}
  81
  82     dn: olcDatabase={0}config,cn=config
  83     objectClass: olcDatabaseConfig
  84     olcRootDN: cn=admin,cn=config
  85     # Access to cn=config, system root can be manager
  86     # with SASL mechanism (-Y EXTERNAL) over unix socket (-H ldapi://)
  87     olcAccess: to *
  88       by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage
  89       by * break
  90
  91     dn: cn=schema,cn=config
  92     objectClass: olcSchemaConfig
  93
  94     dn: olcBackend=mdb,cn=config
  95     objectClass: olcBackendConfig
  96
  97     include: file://${pkgs.openldap}/etc/schema/core.ldif
  98     include: file://${pkgs.openldap}/etc/schema/cosine.ldif
  99     include: file://${pkgs.openldap}/etc/schema/nis.ldif
 100     include: file://${pkgs.openldap}/etc/schema/inetorgperson.ldif
 101     include: file://${openldap/schema/postfix-book.ldif}
 102   '';
 103 };
 104 };
 105 }