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DEFINITIONS
This source file includes following definitions.
- show_deleted_search_callback
- show_deleted_search
- show_deleted_init
1 /*
2 ldb database library
3
4 Copyright (C) Simo Sorce 2005
5 Copyright (C) Stefa Metzmacher <metze@samba.org> 2007
6
7 ** NOTE! The following LGPL license applies to the ldb
8 ** library. This does NOT imply that all of Samba is released
9 ** under the LGPL
10
11 This library is free software; you can redistribute it and/or
12 modify it under the terms of the GNU Lesser General Public
13 License as published by the Free Software Foundation; either
14 version 3 of the License, or (at your option) any later version.
15
16 This library is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
20
21 You should have received a copy of the GNU Lesser General Public
22 License along with this library; if not, see <http://www.gnu.org/licenses/>.
23 */
24
25 /*
26 * Name: ldb
27 *
28 * Component: ldb deleted objects control module
29 *
30 * Description: this module hides deleted objects, and returns them if the right control is there
31 *
32 * Author: Stefan Metzmacher
33 */
34
35 #include "includes.h"
36 #include "ldb/include/ldb_module.h"
37 #include "dsdb/samdb/samdb.h"
38
39 /* search */
40 struct show_deleted_search_request {
41
42 struct ldb_module *module;
43 struct ldb_request *req;
44 };
45
46 static int show_deleted_search_callback(struct ldb_request *req,
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47 struct ldb_reply *ares)
48 {
49 struct show_deleted_search_request *ar;
50
51 ar = talloc_get_type(req->context, struct show_deleted_search_request);
52
53 if (!ares) {
54 return ldb_module_done(ar->req, NULL, NULL,
55 LDB_ERR_OPERATIONS_ERROR);
56 }
57 if (ares->error != LDB_SUCCESS) {
58 return ldb_module_done(ar->req, ares->controls,
59 ares->response, ares->error);
60 }
61
62 switch (ares->type) {
63 case LDB_REPLY_ENTRY:
64
65 return ldb_module_send_entry(ar->req, ares->message, ares->controls);
66
67 case LDB_REPLY_REFERRAL:
68 return ldb_module_send_referral(ar->req, ares->referral);
69
70 case LDB_REPLY_DONE:
71 return ldb_module_done(ar->req, ares->controls,
72 ares->response, LDB_SUCCESS);
73
74 }
75 return LDB_SUCCESS;
76 }
77
78 static int show_deleted_search(struct ldb_module *module, struct ldb_request *req)
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79 {
80 struct ldb_context *ldb;
81 struct ldb_control *control;
82 struct ldb_control **saved_controls;
83 struct show_deleted_search_request *ar;
84 struct ldb_request *down_req;
85 char *old_filter;
86 char *new_filter;
87 int ret;
88
89 ldb = ldb_module_get_ctx(module);
90
91 ar = talloc_zero(req, struct show_deleted_search_request);
92 if (ar == NULL) {
93 return LDB_ERR_OPERATIONS_ERROR;
94 }
95 ar->module = module;
96 ar->req = req;
97
98 /* check if there's a show deleted control */
99 control = ldb_request_get_control(req, LDB_CONTROL_SHOW_DELETED_OID);
100
101 if ( ! control) {
102 old_filter = ldb_filter_from_tree(ar, req->op.search.tree);
103 new_filter = talloc_asprintf(ar, "(&(!(isDeleted=TRUE))%s)",
104 old_filter);
105
106 ret = ldb_build_search_req(&down_req, ldb, ar,
107 req->op.search.base,
108 req->op.search.scope,
109 new_filter,
110 req->op.search.attrs,
111 req->controls,
112 ar, show_deleted_search_callback,
113 req);
114
115 } else {
116 ret = ldb_build_search_req_ex(&down_req, ldb, ar,
117 req->op.search.base,
118 req->op.search.scope,
119 req->op.search.tree,
120 req->op.search.attrs,
121 req->controls,
122 ar, show_deleted_search_callback,
123 req);
124 }
125 if (ret != LDB_SUCCESS) {
126 return ret;
127 }
128
129 /* if a control is there remove if from the modified request */
130 if (control && !save_controls(control, down_req, &saved_controls)) {
131 return LDB_ERR_OPERATIONS_ERROR;
132 }
133
134 /* perform the search */
135 return ldb_next_request(module, down_req);
136 }
137
138 static int show_deleted_init(struct ldb_module *module)
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139 {
140 struct ldb_context *ldb;
141 int ret;
142
143 ldb = ldb_module_get_ctx(module);
144
145 ret = ldb_mod_register_control(module, LDB_CONTROL_SHOW_DELETED_OID);
146 if (ret != LDB_SUCCESS) {
147 ldb_debug(ldb, LDB_DEBUG_ERROR,
148 "extended_dn: Unable to register control with rootdse!\n");
149 return LDB_ERR_OPERATIONS_ERROR;
150 }
151
152 return ldb_next_init(module);
153 }
154
155 _PUBLIC_ const struct ldb_module_ops ldb_show_deleted_module_ops = {
156 .name = "show_deleted",
157 .search = show_deleted_search,
158 .init_context = show_deleted_init
159 };