Line data    Source code

       1             : /*
       2             :    Unix SMB/CIFS Implementation.
       3             : 
       4             :    DSDB replication service - repl secret handling
       5             : 
       6             :    Copyright (C) Andrew Tridgell 2010
       7             :    Copyright (C) Andrew Bartlett 2010
       8             : 
       9             :    This program is free software; you can redistribute it and/or modify
      10             :    it under the terms of the GNU General Public License as published by
      11             :    the Free Software Foundation; either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    This program is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU General Public License
      20             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.
      21             : 
      22             : */
      23             : 
      24             : #include "includes.h"
      25             : #include "ldb_module.h"
      26             : #include "dsdb/samdb/samdb.h"
      27             : #include "samba/service.h"
      28             : #include "dsdb/repl/drepl_service.h"
      29             : #include "param/param.h"
      30             : 
      31             : #undef DBGC_CLASS
      32             : #define DBGC_CLASS            DBGC_DRS_REPL
      33             : 
      34             : struct repl_secret_state {
      35             :         const char *user_dn;
      36             : };
      37             : 
      38             : /*
      39             :   called when a repl secret has completed
      40             :  */
      41        1849 : static void drepl_repl_secret_callback(struct dreplsrv_service *service,
      42             :                                        WERROR werr,
      43             :                                        enum drsuapi_DsExtendedError ext_err,
      44             :                                        void *cb_data)
      45             : {
      46        1849 :         struct repl_secret_state *state = talloc_get_type_abort(cb_data, struct repl_secret_state);
      47        1849 :         if (!W_ERROR_IS_OK(werr)) {
      48        1849 :                 if (W_ERROR_EQUAL(werr, WERR_DS_DRA_SECRETS_DENIED)) {
      49        1298 :                         DEBUG(3,(__location__ ": repl secret disallowed for user "
      50             :                                  "%s - not in allowed replication group\n",
      51             :                                  state->user_dn));
      52             :                 } else {
      53         551 :                         DEBUG(3,(__location__ ": repl secret failed for user %s - %s: extended_ret[0x%X]\n",
      54             :                                  state->user_dn, win_errstr(werr), ext_err));
      55             :                 }
      56             :         } else {
      57           0 :                 DEBUG(3,(__location__ ": repl secret completed OK for '%s'\n", state->user_dn));
      58             :         }
      59        1849 :         talloc_free(state);
      60        1849 : }
      61             : 
      62             : 
      63             : /**
      64             :  * Called when the auth code wants us to try and replicate
      65             :  * a users secrets
      66             :  */
      67        1849 : void drepl_repl_secret(struct dreplsrv_service *service,
      68             :                        const char *user_dn)
      69             : {
      70           0 :         WERROR werr;
      71           0 :         struct ldb_dn *nc_dn, *nc_root, *source_dsa_dn;
      72           0 :         struct dreplsrv_partition *p;
      73           0 :         struct GUID *source_dsa_guid;
      74           0 :         struct repl_secret_state *state;
      75           0 :         int ret;
      76             : 
      77        1849 :         state = talloc_zero(service, struct repl_secret_state);
      78        1849 :         if (state == NULL) {
      79             :                 /* nothing to do, no return value */
      80           0 :                 return;
      81             :         }
      82             : 
      83             :         /* keep a copy for logging in the callback */
      84        1849 :         state->user_dn = talloc_strdup(state, user_dn);
      85             : 
      86        1849 :         nc_dn = ldb_dn_new(state, service->samdb, user_dn);
      87        1849 :         if (!ldb_dn_validate(nc_dn)) {
      88           0 :                 DEBUG(0,(__location__ ": Failed to parse user_dn '%s'\n", user_dn));
      89           0 :                 talloc_free(state);
      90           0 :                 return;
      91             :         }
      92             : 
      93             :         /* work out which partition this is in */
      94        1849 :         ret = dsdb_find_nc_root(service->samdb, state, nc_dn, &nc_root);
      95        1849 :         if (ret != LDB_SUCCESS) {
      96           0 :                 DEBUG(0,(__location__ ": Failed to find nc_root for user_dn '%s'\n", user_dn));
      97           0 :                 talloc_free(state);
      98           0 :                 return;
      99             :         }
     100             : 
     101             :         /* find the partition in our list */
     102        3698 :         for (p=service->partitions; p; p=p->next) {
     103        3698 :                 if (ldb_dn_compare(p->dn, nc_root) == 0) {
     104        1849 :                         break;
     105             :                 }
     106             :         }
     107        1849 :         if (p == NULL) {
     108           0 :                 DEBUG(0,(__location__ ": Failed to find partition for nc_root '%s'\n", ldb_dn_get_linearized(nc_root)));
     109           0 :                 talloc_free(state);
     110           0 :                 return;
     111             :         }
     112             : 
     113        1849 :         if (p->sources == NULL) {
     114           0 :                 DEBUG(0,(__location__ ": No sources for nc_root '%s' for user_dn '%s'\n",
     115             :                          ldb_dn_get_linearized(nc_root), user_dn));
     116           0 :                 talloc_free(state);
     117           0 :                 return;
     118             :         }
     119             : 
     120             :         /* use the first source, for no particularly good reason */
     121        1849 :         source_dsa_guid = &p->sources->repsFrom1->source_dsa_obj_guid;
     122             : 
     123        1849 :         source_dsa_dn = ldb_dn_new(state, service->samdb,
     124        1849 :                                    talloc_asprintf(state, "<GUID=%s>",
     125             :                                                    GUID_string(state, source_dsa_guid)));
     126        1849 :         if (!ldb_dn_validate(source_dsa_dn)) {
     127           0 :                 DEBUG(0,(__location__ ": Invalid source DSA GUID '%s' for user_dn '%s'\n",
     128             :                          GUID_string(state, source_dsa_guid), user_dn));
     129           0 :                 talloc_free(state);
     130           0 :                 return;
     131             :         }
     132             : 
     133        1849 :         werr = drepl_request_extended_op(service,
     134             :                                          nc_dn,
     135             :                                          source_dsa_dn,
     136             :                                          DRSUAPI_EXOP_REPL_SECRET,
     137             :                                          0,
     138        1849 :                                          p->sources->repsFrom1->highwatermark.highest_usn,
     139             :                                          drepl_repl_secret_callback, state);
     140        1849 :         if (!W_ERROR_IS_OK(werr)) {
     141           0 :                 DEBUG(2,(__location__ ": Failed to setup secret replication for user_dn '%s'\n", user_dn));
     142           0 :                 talloc_free(state);
     143           0 :                 return;
     144             :         }
     145        1849 :         DEBUG(3,(__location__ ": started secret replication for %s\n", user_dn));
     146             : }