Line data Source code
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 :
27 : #define DCESRV_INTERFACE_EPMAPPER_BIND(context, iface) \
28 : dcesrv_interface_epmapper_bind(context, iface)
29 5531 : static NTSTATUS dcesrv_interface_epmapper_bind(struct dcesrv_connection_context *context,
30 : const struct dcesrv_interface *iface)
31 : {
32 5531 : return dcesrv_interface_bind_allow_connect(context, iface);
33 : }
34 :
35 : typedef uint32_t error_status_t;
36 :
37 : /* handle types for this module */
38 : enum handle_types {HTYPE_LOOKUP};
39 :
40 : /* a endpoint combined with an interface description */
41 : struct dcesrv_ep_iface {
42 : const char *name;
43 : struct epm_tower ep;
44 : };
45 :
46 : /*
47 : build a list of all interfaces handled by all endpoint servers
48 : */
49 6194 : static uint32_t build_ep_list(TALLOC_CTX *mem_ctx,
50 : struct dcesrv_endpoint *endpoint_list,
51 : struct dcesrv_ep_iface **eps)
52 : {
53 : struct dcesrv_endpoint *d;
54 6194 : uint32_t total = 0;
55 : NTSTATUS status;
56 :
57 6194 : *eps = NULL;
58 :
59 119428 : for (d=endpoint_list; d; d=d->next) {
60 : struct dcesrv_if_list *iface;
61 :
62 492901 : for (iface=d->interface_list;iface;iface=iface->next) {
63 : struct dcerpc_binding *description;
64 :
65 379667 : (*eps) = talloc_realloc(mem_ctx,
66 : *eps,
67 : struct dcesrv_ep_iface,
68 : total + 1);
69 379667 : if (!*eps) {
70 0 : return 0;
71 : }
72 379667 : (*eps)[total].name = iface->iface->name;
73 :
74 379667 : description = dcerpc_binding_dup(*eps, d->ep_description);
75 379667 : if (description == NULL) {
76 0 : return 0;
77 : }
78 :
79 379667 : status = dcerpc_binding_set_abstract_syntax(description,
80 379667 : &iface->iface->syntax_id);
81 379667 : if (!NT_STATUS_IS_OK(status)) {
82 0 : return 0;
83 : }
84 :
85 379667 : status = dcerpc_binding_build_tower(*eps, description, &(*eps)[total].ep);
86 379667 : TALLOC_FREE(description);
87 379667 : if (!NT_STATUS_IS_OK(status)) {
88 0 : DBG_ERR("Unable to build tower for %s - %s\n",
89 : iface->iface->name,
90 : nt_errstr(status));
91 0 : continue;
92 : }
93 379667 : total++;
94 : }
95 : }
96 :
97 6194 : return total;
98 : }
99 :
100 :
101 0 : static error_status_t dcesrv_epm_Insert(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct epm_Insert *r)
102 : {
103 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
104 : }
105 :
106 0 : static error_status_t dcesrv_epm_Delete(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
107 : struct epm_Delete *r)
108 : {
109 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
110 : }
111 :
112 :
113 : /*
114 : implement epm_Lookup. This call is used to enumerate the interfaces
115 : available on a rpc server
116 : */
117 48 : static error_status_t dcesrv_epm_Lookup(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
118 : struct epm_Lookup *r)
119 : {
120 : struct dcesrv_handle *h;
121 : struct rpc_eps {
122 : uint32_t count;
123 : struct dcesrv_ep_iface *e;
124 : } *eps;
125 : uint32_t num_ents;
126 : unsigned int i;
127 :
128 48 : DCESRV_PULL_HANDLE_FAULT(h, r->in.entry_handle, HTYPE_LOOKUP);
129 :
130 45 : eps = h->data;
131 :
132 45 : if (!eps) {
133 : /* this is the first call - fill the list. Subsequent calls
134 : will feed from this list, stored in the handle */
135 12 : eps = talloc(h, struct rpc_eps);
136 12 : if (!eps) {
137 0 : return EPMAPPER_STATUS_NO_MEMORY;
138 : }
139 12 : h->data = eps;
140 :
141 12 : eps->count = build_ep_list(h, dce_call->conn->dce_ctx->endpoint_list, &eps->e);
142 : }
143 :
144 : /* return the next N elements */
145 45 : num_ents = r->in.max_ents;
146 45 : if (num_ents > eps->count) {
147 6 : num_ents = eps->count;
148 : }
149 :
150 45 : *r->out.entry_handle = h->wire_handle;
151 45 : r->out.num_ents = talloc(mem_ctx, uint32_t);
152 45 : *r->out.num_ents = num_ents;
153 :
154 45 : if (num_ents == 0) {
155 0 : r->out.entries = NULL;
156 0 : ZERO_STRUCTP(r->out.entry_handle);
157 0 : talloc_free(h);
158 0 : return EPMAPPER_STATUS_NO_MORE_ENTRIES;
159 : }
160 :
161 45 : r->out.entries = talloc_array(mem_ctx, struct epm_entry_t, num_ents);
162 45 : if (!r->out.entries) {
163 0 : return EPMAPPER_STATUS_NO_MEMORY;
164 : }
165 :
166 393 : for (i=0;i<num_ents;i++) {
167 348 : ZERO_STRUCT(r->out.entries[i].object);
168 348 : r->out.entries[i].annotation = eps->e[i].name;
169 348 : r->out.entries[i].tower = talloc(mem_ctx, struct epm_twr_t);
170 348 : if (!r->out.entries[i].tower) {
171 0 : return EPMAPPER_STATUS_NO_MEMORY;
172 : }
173 348 : r->out.entries[i].tower->tower = eps->e[i].ep;
174 : }
175 :
176 45 : eps->count -= num_ents;
177 45 : eps->e += num_ents;
178 :
179 45 : return EPMAPPER_STATUS_OK;
180 : }
181 :
182 :
183 : /*
184 : implement epm_Map. This is used to find the specific endpoint to talk to given
185 : a generic protocol tower
186 : */
187 6182 : static error_status_t dcesrv_epm_Map(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
188 : struct epm_Map *r)
189 : {
190 : uint32_t count;
191 : unsigned int i;
192 : struct dcesrv_ep_iface *eps;
193 : struct epm_floor *floors;
194 : enum dcerpc_transport_t transport;
195 : struct ndr_syntax_id ndr_syntax;
196 :
197 6182 : count = build_ep_list(mem_ctx, dce_call->conn->dce_ctx->endpoint_list, &eps);
198 :
199 6182 : ZERO_STRUCT(*r->out.entry_handle);
200 6182 : r->out.num_towers = talloc(mem_ctx, uint32_t);
201 6182 : if (!r->out.num_towers) {
202 0 : return EPMAPPER_STATUS_NO_MEMORY;
203 : }
204 6182 : *r->out.num_towers = 1;
205 6182 : r->out.towers = talloc(mem_ctx, struct epm_twr_p_t);
206 6182 : if (!r->out.towers) {
207 0 : return EPMAPPER_STATUS_NO_MEMORY;
208 : }
209 6182 : r->out.towers->twr = talloc(mem_ctx, struct epm_twr_t);
210 6182 : if (!r->out.towers->twr) {
211 0 : return EPMAPPER_STATUS_NO_MEMORY;
212 : }
213 :
214 17380 : if (!r->in.map_tower || r->in.max_towers == 0 ||
215 6182 : r->in.map_tower->tower.num_floors < 3) {
216 0 : goto failed;
217 : }
218 :
219 6182 : floors = r->in.map_tower->tower.floors;
220 :
221 6182 : dcerpc_floor_get_lhs_data(&r->in.map_tower->tower.floors[1], &ndr_syntax);
222 :
223 11781 : if (floors[1].lhs.protocol != EPM_PROTOCOL_UUID ||
224 6182 : !ndr_syntax_id_equal(&ndr_syntax, &ndr_transfer_syntax_ndr)) {
225 0 : goto failed;
226 : }
227 :
228 6182 : transport = dcerpc_transport_by_tower(&r->in.map_tower->tower);
229 :
230 6182 : if (transport == -1) {
231 132 : DEBUG(2, ("Client requested unknown transport with levels: "));
232 528 : for (i = 2; i < r->in.map_tower->tower.num_floors; i++) {
233 396 : DEBUG(2, ("%d, ", r->in.map_tower->tower.floors[i].lhs.protocol));
234 : }
235 132 : DEBUG(2, ("\n"));
236 132 : goto failed;
237 : }
238 :
239 482333 : for (i=0;i<count;i++) {
240 252682 : if (
241 252682 : data_blob_cmp(&r->in.map_tower->tower.floors[0].lhs.lhs_data,
242 252682 : &eps[i].ep.floors[0].lhs.lhs_data) != 0
243 18280 : || transport != dcerpc_transport_by_tower(&eps[i].ep)) {
244 246740 : continue;
245 : }
246 :
247 5942 : r->out.towers->twr->tower = eps[i].ep;
248 5942 : r->out.towers->twr->tower_length = 0;
249 5942 : return EPMAPPER_STATUS_OK;
250 : }
251 :
252 :
253 108 : failed:
254 240 : *r->out.num_towers = 0;
255 240 : r->out.towers->twr = NULL;
256 :
257 240 : return EPMAPPER_STATUS_NO_MORE_ENTRIES;
258 : }
259 :
260 6 : static error_status_t dcesrv_epm_LookupHandleFree(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
261 : struct epm_LookupHandleFree *r)
262 : {
263 6 : struct dcesrv_handle *h = NULL;
264 :
265 6 : r->out.entry_handle = r->in.entry_handle;
266 :
267 6 : DCESRV_PULL_HANDLE_FAULT(h, r->in.entry_handle, HTYPE_LOOKUP);
268 6 : TALLOC_FREE(h);
269 :
270 6 : ZERO_STRUCTP(r->out.entry_handle);
271 :
272 6 : return EPMAPPER_STATUS_OK;
273 : }
274 :
275 0 : static error_status_t dcesrv_epm_InqObject(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
276 : struct epm_InqObject *r)
277 : {
278 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
279 : }
280 :
281 0 : static error_status_t dcesrv_epm_MgmtDelete(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
282 : struct epm_MgmtDelete *r)
283 : {
284 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
285 : }
286 :
287 0 : static error_status_t dcesrv_epm_MapAuth(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
288 : struct epm_MapAuth *r)
289 : {
290 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
291 : }
292 :
293 : /* include the generated boilerplate */
294 : #include "librpc/gen_ndr/ndr_epmapper_s.c"
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