source4/kdc/hdb-samba4-plugin.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    KDC Server startup
   5
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-20011
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "kdc/kdc-glue.h"
  24 #include "kdc/db-glue.h"
  25 #include "lib/util/samba_util.h"
  26 #include "lib/param/param.h"
  27 #include "source4/lib/events/events.h"
  28
  29 static krb5_error_code hdb_samba4_create(krb5_context context, struct HDB **db, const char *arg)
  30 {
  31         NTSTATUS nt_status;
  32         void *ptr;
  33         struct samba_kdc_base_context *base_ctx;
  34
  35         if (sscanf(arg, "&%p", &ptr) == 1) {
  36                 base_ctx = talloc_get_type_abort(ptr, struct samba_kdc_base_context);
  37         } else if (arg[0] == '\0' || file_exist(arg)) {
  38                 /* This mode for use in kadmin, rather than in Samba */
  39
  40                 setup_logging("hdb_samba4", DEBUG_DEFAULT_STDERR);
  41
  42                 base_ctx = talloc_zero(NULL, struct samba_kdc_base_context);
  43                 if (!base_ctx) {
  44                         return ENOMEM;
  45                 }
  46
  47                 base_ctx->ev_ctx = s4_event_context_init(base_ctx);
  48                 base_ctx->lp_ctx = loadparm_init_global(false);
  49                 if (arg[0]) {
  50                         lpcfg_load(base_ctx->lp_ctx, arg);
  51                 } else {
  52                         lpcfg_load_default(base_ctx->lp_ctx);
  53                 }
  54         } else {
  55                 return EINVAL;
  56         }
  57
  58         /* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */
  59         nt_status = hdb_samba4_create_kdc(base_ctx, context, db);
  60
  61         if (NT_STATUS_IS_OK(nt_status)) {
  62                 return 0;
  63         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ERROR_DS_INCOMPATIBLE_VERSION)) {
  64                 return EINVAL;
  65         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
  66
  67                 krb5_set_error_message(context, EINVAL, "Failed to open Samba4 LDB at %s", lpcfg_private_path(base_ctx, base_ctx->lp_ctx, "sam.ldb"));
  68         } else {
  69                 krb5_set_error_message(context, EINVAL, "Failed to connect to Samba4 DB: %s (%s)", get_friendly_nt_error_msg(nt_status), nt_errstr(nt_status));
  70         }
  71
  72         return EINVAL;
  73 }
  74
  75 #if (HDB_INTERFACE_VERSION != 8 && HDB_INTERFACE_VERSION != 7)
  76 #error "Unsupported Heimdal HDB version"
  77 #endif
  78
  79 #if HDB_INTERFACE_VERSION >= 8
  80 static krb5_error_code hdb_samba4_init(krb5_context context, void **ctx)
  81 {
  82         *ctx = NULL;
  83         return 0;
  84 }
  85
  86 static void hdb_samba4_fini(void *ctx)
  87 {
  88 }
  89 #endif
  90
  91 /* Only used in the hdb-backed keytab code
  92  * for a keytab of 'samba4&<address>' or samba4, to find
  93  * kpasswd's key in the main DB, and to
  94  * copy all the keys into a file (libnet_keytab_export)
  95  *
  96  * The <address> is the string form of a pointer to a talloced struct hdb_samba_context
  97  */
  98 struct hdb_method hdb_samba4_interface = {
  99         HDB_INTERFACE_VERSION,
 100 #if HDB_INTERFACE_VERSION >= 8
 101         .init = hdb_samba4_init,
 102         .fini = hdb_samba4_fini,
 103 #endif
 104         .prefix = "samba4",
 105         .create = hdb_samba4_create
 106 };