s4:drsuapi RPC server - fix "enum security_user_level" warning on Tru64
[nivanova/samba-autobuild/.git] / source4 / rpc_server / drsuapi / updaterefs.c
1 /* 
2    Unix SMB/CIFS implementation.
3
4    implement the DRSUpdateRefs call
5
6    Copyright (C) Andrew Tridgell 2009
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 "rpc_server/dcerpc_server.h"
24 #include "dsdb/samdb/samdb.h"
25 #include "libcli/security/security.h"
26 #include "libcli/security/session.h"
27 #include "rpc_server/drsuapi/dcesrv_drsuapi.h"
28 #include "auth/session.h"
29 #include "librpc/gen_ndr/ndr_drsuapi.h"
30
31 struct repsTo {
32         uint32_t count;
33         struct repsFromToBlob *r;
34 };
35
36 /*
37   add a replication destination for a given partition GUID
38  */
39 static WERROR uref_add_dest(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, 
40                             struct ldb_dn *dn, struct repsFromTo1 *dest, 
41                             uint32_t options)
42 {
43         struct repsTo reps;
44         WERROR werr;
45         unsigned int i;
46
47         werr = dsdb_loadreps(sam_ctx, mem_ctx, dn, "repsTo", &reps.r, &reps.count);
48         if (!W_ERROR_IS_OK(werr)) {
49                 return werr;
50         }
51
52         for (i=0; i<reps.count; i++) {
53                 if (GUID_compare(&dest->source_dsa_obj_guid, 
54                                  &reps.r[i].ctr.ctr1.source_dsa_obj_guid) == 0) {
55                         if (options & DRSUAPI_DRS_GETCHG_CHECK) {
56                                 return WERR_OK;
57                         } else {
58                                 return WERR_DS_DRA_REF_ALREADY_EXISTS;
59                         }
60                 }
61         }
62
63         reps.r = talloc_realloc(mem_ctx, reps.r, struct repsFromToBlob, reps.count+1);
64         if (reps.r == NULL) {
65                 return WERR_DS_DRA_INTERNAL_ERROR;
66         }
67         ZERO_STRUCT(reps.r[reps.count]);
68         reps.r[reps.count].version = 1;
69         reps.r[reps.count].ctr.ctr1 = *dest;
70         /* add the GCSPN flag if the client asked for it */
71         reps.r[reps.count].ctr.ctr1.replica_flags |= (options & DRSUAPI_DRS_REF_GCSPN);
72         reps.count++;
73
74         werr = dsdb_savereps(sam_ctx, mem_ctx, dn, "repsTo", reps.r, reps.count);
75         if (!W_ERROR_IS_OK(werr)) {
76                 return werr;
77         }
78
79         return WERR_OK; 
80 }
81
82 /*
83   delete a replication destination for a given partition GUID
84  */
85 static WERROR uref_del_dest(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, 
86                             struct ldb_dn *dn, struct GUID *dest_guid, 
87                             uint32_t options)
88 {
89         struct repsTo reps;
90         WERROR werr;
91         unsigned int i;
92         bool found = false;
93
94         werr = dsdb_loadreps(sam_ctx, mem_ctx, dn, "repsTo", &reps.r, &reps.count);
95         if (!W_ERROR_IS_OK(werr)) {
96                 return werr;
97         }
98
99         for (i=0; i<reps.count; i++) {
100                 if (GUID_compare(dest_guid, &reps.r[i].ctr.ctr1.source_dsa_obj_guid) == 0) {
101                         if (i+1 < reps.count) {
102                                 memmove(&reps.r[i], &reps.r[i+1], sizeof(reps.r[i])*(reps.count-(i+1)));
103                         }
104                         reps.count--;
105                         found = true;
106                 }
107         }
108
109         werr = dsdb_savereps(sam_ctx, mem_ctx, dn, "repsTo", reps.r, reps.count);
110         if (!W_ERROR_IS_OK(werr)) {
111                 return werr;
112         }
113
114         if (!found &&
115             !(options & DRSUAPI_DRS_GETCHG_CHECK) &&
116             !(options & DRSUAPI_DRS_ADD_REF)) {
117                 return WERR_DS_DRA_REF_NOT_FOUND;
118         }
119
120         return WERR_OK; 
121 }
122
123 /* 
124   drsuapi_DsReplicaUpdateRefs - a non RPC version callable from getncchanges
125 */
126 WERROR drsuapi_UpdateRefs(struct drsuapi_bind_state *b_state, TALLOC_CTX *mem_ctx,
127                           struct drsuapi_DsReplicaUpdateRefsRequest1 *req)
128 {
129         WERROR werr;
130         struct ldb_dn *dn;
131         struct ldb_context *sam_ctx = b_state->sam_ctx_system?b_state->sam_ctx_system:b_state->sam_ctx;
132
133         DEBUG(4,("DsReplicaUpdateRefs for host '%s' with GUID %s options 0x%08x nc=%s\n",
134                  req->dest_dsa_dns_name, GUID_string(mem_ctx, &req->dest_dsa_guid),
135                  req->options,
136                  drs_ObjectIdentifier_to_string(mem_ctx, req->naming_context)));
137
138         dn = ldb_dn_new(mem_ctx, sam_ctx, req->naming_context->dn);
139         if (dn == NULL) {
140                 return WERR_DS_INVALID_DN_SYNTAX;
141         }
142
143         if (ldb_transaction_start(sam_ctx) != LDB_SUCCESS) {
144                 DEBUG(0,(__location__ ": Failed to start transaction on samdb: %s\n",
145                          ldb_errstring(sam_ctx)));
146                 return WERR_DS_DRA_INTERNAL_ERROR;              
147         }
148
149         if (req->options & DRSUAPI_DRS_DEL_REF) {
150                 werr = uref_del_dest(sam_ctx, mem_ctx, dn, &req->dest_dsa_guid, req->options);
151                 if (!W_ERROR_IS_OK(werr)) {
152                         DEBUG(0,("Failed to delete repsTo for %s: %s\n",
153                                  GUID_string(mem_ctx, &req->dest_dsa_guid),
154                                  win_errstr(werr)));
155                         goto failed;
156                 }
157         }
158
159         if (req->options & DRSUAPI_DRS_ADD_REF) {
160                 struct repsFromTo1 dest;
161                 struct repsFromTo1OtherInfo oi;
162                 
163                 ZERO_STRUCT(dest);
164                 ZERO_STRUCT(oi);
165
166                 oi.dns_name = req->dest_dsa_dns_name;
167                 dest.other_info          = &oi;
168                 dest.source_dsa_obj_guid = req->dest_dsa_guid;
169                 dest.replica_flags       = req->options;
170
171                 werr = uref_add_dest(sam_ctx, mem_ctx, dn, &dest, req->options);
172                 if (!W_ERROR_IS_OK(werr)) {
173                         DEBUG(0,("Failed to add repsTo for %s: %s\n",
174                                  GUID_string(mem_ctx, &dest.source_dsa_obj_guid),
175                                  win_errstr(werr)));
176                         goto failed;
177                 }
178         }
179
180         if (ldb_transaction_commit(sam_ctx) != LDB_SUCCESS) {
181                 DEBUG(0,(__location__ ": Failed to commit transaction on samdb: %s\n",
182                          ldb_errstring(sam_ctx)));
183                 return WERR_DS_DRA_INTERNAL_ERROR;              
184         }
185
186         return WERR_OK;
187
188 failed:
189         ldb_transaction_cancel(sam_ctx);
190         return werr;
191 }
192
193 /* 
194   drsuapi_DsReplicaUpdateRefs
195 */
196 WERROR dcesrv_drsuapi_DsReplicaUpdateRefs(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
197                                           struct drsuapi_DsReplicaUpdateRefs *r)
198 {
199         struct dcesrv_handle *h;
200         struct drsuapi_bind_state *b_state;
201         struct drsuapi_DsReplicaUpdateRefsRequest1 *req;
202         WERROR werr;
203         int ret;
204         enum security_user_level security_level;
205
206         DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
207         b_state = h->data;
208
209         if (r->in.level != 1) {
210                 DEBUG(0,("DrReplicUpdateRefs - unsupported level %u\n", r->in.level));
211                 return WERR_DS_DRA_INVALID_PARAMETER;
212         }
213         req = &r->in.req.req1;
214         werr = drs_security_access_check(b_state->sam_ctx,
215                                          mem_ctx,
216                                          dce_call->conn->auth_state.session_info->security_token,
217                                          req->naming_context,
218                                          GUID_DRS_MANAGE_TOPOLOGY);
219
220         if (!W_ERROR_IS_OK(werr)) {
221                 return werr;
222         }
223
224         security_level = security_session_user_level(dce_call->conn->auth_state.session_info, NULL);
225         if (security_level < SECURITY_ADMINISTRATOR) {
226                 /* check that they are using an DSA objectGUID that they own */
227                 ret = dsdb_validate_dsa_guid(b_state->sam_ctx,
228                                              &req->dest_dsa_guid,
229                                              &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX]);
230                 if (ret != LDB_SUCCESS) {
231                         DEBUG(0,(__location__ ": Refusing DsReplicaUpdateRefs for sid %s with GUID %s\n",
232                                  dom_sid_string(mem_ctx,
233                                                 &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX]),
234                                  GUID_string(mem_ctx, &req->dest_dsa_guid)));
235                         return WERR_DS_DRA_ACCESS_DENIED;
236                 }
237         }
238
239         werr = drsuapi_UpdateRefs(b_state, mem_ctx, req);
240
241 #if 0
242         NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsReplicaUpdateRefs, NDR_BOTH, r);
243 #endif
244
245         return werr;
246 }