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DEFINITIONS
This source file includes following definitions.
- dcesrv_handle_destructor
- dcesrv_handle_new
- dcesrv_handle_fetch
1 /*
2 Unix SMB/CIFS implementation.
3
4 server side dcerpc handle code
5
6 Copyright (C) Andrew Tridgell 2003
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 "../lib/util/dlinklist.h"
24 #include "rpc_server/dcerpc_server.h"
25
26 /*
27 destroy a rpc handle
28 */
29 static int dcesrv_handle_destructor(struct dcesrv_handle *h)
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30 {
31 DLIST_REMOVE(h->context->handles, h);
32 return 0;
33 }
34
35
36 /*
37 allocate a new rpc handle
38 */
39 _PUBLIC_ struct dcesrv_handle *dcesrv_handle_new(struct dcesrv_connection_context *context,
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40 uint8_t handle_type)
41 {
42 struct dcesrv_handle *h;
43
44 h = talloc(context, struct dcesrv_handle);
45 if (!h) {
46 return NULL;
47 }
48 h->data = NULL;
49 h->context = context;
50
51 h->wire_handle.handle_type = handle_type;
52 h->wire_handle.uuid = GUID_random();
53
54 DLIST_ADD(context->handles, h);
55
56 talloc_set_destructor(h, dcesrv_handle_destructor);
57
58 return h;
59 }
60
61 /**
62 find an internal handle given a wire handle. If the wire handle is NULL then
63 allocate a new handle
64 */
65 _PUBLIC_ struct dcesrv_handle *dcesrv_handle_fetch(
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66 struct dcesrv_connection_context *context,
67 struct policy_handle *p,
68 uint8_t handle_type)
69 {
70 struct dcesrv_handle *h;
71
72 if (policy_handle_empty(p)) {
73 return dcesrv_handle_new(context, handle_type);
74 }
75
76 for (h=context->handles; h; h=h->next) {
77 if (h->wire_handle.handle_type == p->handle_type &&
78 GUID_equal(&p->uuid, &h->wire_handle.uuid)) {
79 if (handle_type != DCESRV_HANDLE_ANY &&
80 p->handle_type != handle_type) {
81 DEBUG(0,("client gave us the wrong handle type (%d should be %d)\n",
82 p->handle_type, handle_type));
83 return NULL;
84 }
85 return h;
86 }
87 }
88
89 return NULL;
90 }