1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
Unix SMB/CIFS implementation.
handle removal of deleted objects
Copyright (C) 2009 Andrew Tridgell
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "lib/events/events.h"
#include "dsdb/samdb/samdb.h"
#include "auth/auth.h"
#include "smbd/service.h"
#include "lib/messaging/irpc.h"
#include "dsdb/kcc/kcc_connection.h"
#include "dsdb/kcc/kcc_service.h"
#include "lib/ldb/include/ldb_errors.h"
#include "../lib/util/dlinklist.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_drsuapi.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "param/param.h"
/*
onelevel search with SHOW_DELETED control
*/
static int search_onelevel_with_deleted(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_result **_res,
struct ldb_dn *basedn,
const char * const *attrs)
{
struct ldb_request *req;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
int ret;
tmp_ctx = talloc_new(mem_ctx);
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
basedn,
LDB_SCOPE_ONELEVEL,
NULL,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(req);
*_res = talloc_steal(mem_ctx, res);
return ret;
}
/*
check to see if any deleted objects need scavenging
*/
NTSTATUS kccsrv_check_deleted(struct kccsrv_service *s, TALLOC_CTX *mem_ctx)
{
struct kccsrv_partition *part;
int ret;
uint32_t tombstoneLifetime;
time_t t = time(NULL);
if (t - s->last_deleted_check < lp_parm_int(s->task->lp_ctx, NULL, "kccsrv",
"check_deleted_interval", 600)) {
return NT_STATUS_OK;
}
s->last_deleted_check = t;
ret = dsdb_tombstone_lifetime(s->samdb, &tombstoneLifetime);
if (ret != LDB_SUCCESS) {
DEBUG(1,(__location__ ": Failed to get tombstone lifetime\n"));
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
for (part=s->partitions; part; part=part->next) {
struct ldb_dn *do_dn;
struct ldb_result *res;
const char *attrs[] = { "whenChanged", NULL };
int i;
ret = dsdb_get_deleted_objects_dn(s->samdb, mem_ctx, part->dn, &do_dn);
if (ret != LDB_SUCCESS) {
/* some partitions have no Deleted Objects
container */
continue;
}
ret = search_onelevel_with_deleted(s->samdb, do_dn, &res, do_dn, attrs);
if (ret != LDB_SUCCESS) {
DEBUG(1,(__location__ ": Failed to search for deleted objects in %s\n",
ldb_dn_get_linearized(do_dn)));
talloc_free(do_dn);
continue;
}
for (i=0; i<res->count; i++) {
const char *tstring;
time_t whenChanged = 0;
tstring = samdb_result_string(res->msgs[i], "whenChanged", NULL);
if (tstring) {
whenChanged = ldb_string_to_time(tstring);
}
if (t - whenChanged > tombstoneLifetime*60*60*24) {
ret = ldb_delete(s->samdb, res->msgs[i]->dn);
if (ret != LDB_SUCCESS) {
DEBUG(1,(__location__ ": Failed to remove deleted object %s\n",
ldb_dn_get_linearized(res->msgs[i]->dn)));
} else {
DEBUG(4,("Removed deleted object %s\n",
ldb_dn_get_linearized(res->msgs[i]->dn)));
}
}
}
talloc_free(do_dn);
}
return NT_STATUS_OK;
}
|
