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DEFINITIONS
This source file includes following definitions.
- build_ep_list
- dcesrv_epm_Insert
- dcesrv_epm_Delete
- dcesrv_epm_Lookup
- dcesrv_epm_Map
- dcesrv_epm_LookupHandleFree
- dcesrv_epm_InqObject
- dcesrv_epm_MgmtDelete
- dcesrv_epm_MapAuth
1 /*
2 Unix SMB/CIFS implementation.
3
4 endpoint server for the epmapper pipe
5
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
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 #include "includes.h"
24 #include "librpc/gen_ndr/ndr_epmapper.h"
25 #include "rpc_server/dcerpc_server.h"
26 #include "rpc_server/common/common.h"
27
28 typedef uint32_t error_status_t;
29
30 /* handle types for this module */
31 enum handle_types {HTYPE_LOOKUP};
32
33 /* a endpoint combined with an interface description */
34 struct dcesrv_ep_iface {
35 const char *name;
36 struct epm_tower ep;
37 };
38
39 /*
40 build a list of all interfaces handled by all endpoint servers
41 */
42 static uint32_t build_ep_list(TALLOC_CTX *mem_ctx,
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43 struct dcesrv_endpoint *endpoint_list,
44 struct dcesrv_ep_iface **eps)
45 {
46 struct dcesrv_endpoint *d;
47 uint32_t total = 0;
48 NTSTATUS status;
49
50 *eps = NULL;
51
52 for (d=endpoint_list; d; d=d->next) {
53 struct dcesrv_if_list *iface;
54 struct dcerpc_binding *description;
55
56 for (iface=d->interface_list;iface;iface=iface->next) {
57 (*eps) = talloc_realloc(mem_ctx,
58 *eps,
59 struct dcesrv_ep_iface,
60 total + 1);
61 if (!*eps) {
62 return 0;
63 }
64 (*eps)[total].name = iface->iface.name;
65
66 description = d->ep_description;
67 description->object = iface->iface.syntax_id;
68
69 status = dcerpc_binding_build_tower(mem_ctx, description, &(*eps)[total].ep);
70 if (NT_STATUS_IS_ERR(status)) {
71 DEBUG(1, ("Unable to build tower for %s\n", iface->iface.name));
72 continue;
73 }
74 total++;
75 }
76 }
77
78 return total;
79 }
80
81
82 static error_status_t dcesrv_epm_Insert(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct epm_Insert *r)
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83 {
84 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
85 }
86
87 static error_status_t dcesrv_epm_Delete(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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88 struct epm_Delete *r)
89 {
90 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
91 }
92
93
94 /*
95 implement epm_Lookup. This call is used to enumerate the interfaces
96 available on a rpc server
97 */
98 static error_status_t dcesrv_epm_Lookup(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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99 struct epm_Lookup *r)
100 {
101 struct dcesrv_handle *h;
102 struct rpc_eps {
103 uint32_t count;
104 struct dcesrv_ep_iface *e;
105 } *eps;
106 uint32_t num_ents;
107 int i;
108
109 DCESRV_PULL_HANDLE_FAULT(h, r->in.entry_handle, HTYPE_LOOKUP);
110
111 eps = h->data;
112
113 if (!eps) {
114 /* this is the first call - fill the list. Subsequent calls
115 will feed from this list, stored in the handle */
116 eps = talloc(h, struct rpc_eps);
117 if (!eps) {
118 return EPMAPPER_STATUS_NO_MEMORY;
119 }
120 h->data = eps;
121
122 eps->count = build_ep_list(h, dce_call->conn->dce_ctx->endpoint_list, &eps->e);
123 }
124
125 /* return the next N elements */
126 num_ents = r->in.max_ents;
127 if (num_ents > eps->count) {
128 num_ents = eps->count;
129 }
130
131 *r->out.entry_handle = h->wire_handle;
132 r->out.num_ents = talloc(mem_ctx, uint32_t);
133 *r->out.num_ents = num_ents;
134
135 if (num_ents == 0) {
136 r->out.entries = NULL;
137 ZERO_STRUCTP(r->out.entry_handle);
138 talloc_free(h);
139 return EPMAPPER_STATUS_NO_MORE_ENTRIES;
140 }
141
142 r->out.entries = talloc_array(mem_ctx, struct epm_entry_t, num_ents);
143 if (!r->out.entries) {
144 return EPMAPPER_STATUS_NO_MEMORY;
145 }
146
147 for (i=0;i<num_ents;i++) {
148 ZERO_STRUCT(r->out.entries[i].object);
149 r->out.entries[i].annotation = eps->e[i].name;
150 r->out.entries[i].tower = talloc(mem_ctx, struct epm_twr_t);
151 if (!r->out.entries[i].tower) {
152 return EPMAPPER_STATUS_NO_MEMORY;
153 }
154 r->out.entries[i].tower->tower = eps->e[i].ep;
155 }
156
157 eps->count -= num_ents;
158 eps->e += num_ents;
159
160 return EPMAPPER_STATUS_OK;
161 }
162
163
164 /*
165 implement epm_Map. This is used to find the specific endpoint to talk to given
166 a generic protocol tower
167 */
168 static error_status_t dcesrv_epm_Map(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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169 struct epm_Map *r)
170 {
171 uint32_t count;
172 int i;
173 struct dcesrv_ep_iface *eps;
174 struct epm_floor *floors;
175 enum dcerpc_transport_t transport;
176 struct ndr_syntax_id ndr_syntax;
177
178 count = build_ep_list(mem_ctx, dce_call->conn->dce_ctx->endpoint_list, &eps);
179
180 ZERO_STRUCT(*r->out.entry_handle);
181 r->out.num_towers = talloc(mem_ctx, uint32_t);
182 if (!r->out.num_towers) {
183 return EPMAPPER_STATUS_NO_MEMORY;
184 }
185 *r->out.num_towers = 1;
186 r->out.towers = talloc(mem_ctx, struct epm_twr_p_t);
187 if (!r->out.towers) {
188 return EPMAPPER_STATUS_NO_MEMORY;
189 }
190 r->out.towers->twr = talloc(mem_ctx, struct epm_twr_t);
191 if (!r->out.towers->twr) {
192 return EPMAPPER_STATUS_NO_MEMORY;
193 }
194
195 if (!r->in.map_tower || r->in.max_towers == 0 ||
196 r->in.map_tower->tower.num_floors < 3) {
197 goto failed;
198 }
199
200 floors = r->in.map_tower->tower.floors;
201
202 dcerpc_floor_get_lhs_data(&r->in.map_tower->tower.floors[1], &ndr_syntax);
203
204 if (floors[1].lhs.protocol != EPM_PROTOCOL_UUID ||
205 !GUID_equal(&ndr_syntax.uuid, &ndr_transfer_syntax.uuid) ||
206 ndr_syntax.if_version != ndr_transfer_syntax.if_version) {
207 goto failed;
208 }
209
210 transport = dcerpc_transport_by_tower(&r->in.map_tower->tower);
211
212 if (transport == -1) {
213 DEBUG(2, ("Client requested unknown transport with levels: "));
214 for (i = 2; i < r->in.map_tower->tower.num_floors; i++) {
215 DEBUG(2, ("%d, ", r->in.map_tower->tower.floors[i].lhs.protocol));
216 }
217 DEBUG(2, ("\n"));
218 goto failed;
219 }
220
221 for (i=0;i<count;i++) {
222 if (
223 data_blob_cmp(&r->in.map_tower->tower.floors[0].lhs.lhs_data,
224 &eps[i].ep.floors[0].lhs.lhs_data) != 0
225 || transport != dcerpc_transport_by_tower(&eps[i].ep)) {
226 continue;
227 }
228
229 r->out.towers->twr->tower = eps[i].ep;
230 r->out.towers->twr->tower_length = 0;
231 return EPMAPPER_STATUS_OK;
232 }
233
234
235 failed:
236 *r->out.num_towers = 0;
237 r->out.towers->twr = NULL;
238
239 return EPMAPPER_STATUS_NO_MORE_ENTRIES;
240 }
241
242 static error_status_t dcesrv_epm_LookupHandleFree(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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243 struct epm_LookupHandleFree *r)
244 {
245 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
246 }
247
248 static error_status_t dcesrv_epm_InqObject(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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249 struct epm_InqObject *r)
250 {
251 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
252 }
253
254 static error_status_t dcesrv_epm_MgmtDelete(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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255 struct epm_MgmtDelete *r)
256 {
257 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
258 }
259
260 static error_status_t dcesrv_epm_MapAuth(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
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261 struct epm_MapAuth *r)
262 {
263 DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
264 }
265
266 /* include the generated boilerplate */
267 #include "librpc/gen_ndr/ndr_epmapper_s.c"