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 6230 : static NTSTATUS dcesrv_interface_epmapper_bind(struct dcesrv_connection_context *context,
30 : const struct dcesrv_interface *iface)
31 : {
32 6230 : 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 6889 : static uint32_t build_ep_list(TALLOC_CTX *mem_ctx,
50 : struct dcesrv_endpoint *endpoint_list,
51 : struct dcesrv_ep_iface **eps)
52 : {
53 125 : struct dcesrv_endpoint *d;
54 6889 : uint32_t total = 0;
55 125 : NTSTATUS status;
56 :
57 6889 : *eps = NULL;
58 :
59 131606 : for (d=endpoint_list; d; d=d->next) {
60 2125 : struct dcesrv_if_list *iface;
61 :
62 541982 : for (iface=d->interface_list;iface;iface=iface->next) {
63 7000 : struct dcerpc_binding *description;
64 :
65 417265 : (*eps) = talloc_realloc(mem_ctx,
66 : *eps,
67 : struct dcesrv_ep_iface,
68 : total + 1);
69 417265 : if (!*eps) {
70 0 : return 0;
71 : }
72 417265 : (*eps)[total].name = iface->iface->name;
73 :
74 417265 : description = dcerpc_binding_dup(*eps, d->ep_description);
75 417265 : if (description == NULL) {
76 0 : return 0;
77 : }
78 :
79 424265 : status = dcerpc_binding_set_abstract_syntax(description,
80 417265 : &iface->iface->syntax_id);
81 417265 : if (!NT_STATUS_IS_OK(status)) {
82 0 : return 0;
83 : }
84 :
85 417265 : status = dcerpc_binding_build_tower(*eps, description, &(*eps)[total].ep);
86 417265 : TALLOC_FREE(description);
87 417265 : 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 410265 : total++;
94 : }
95 : }
96 :
97 6764 : 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 54 : static error_status_t dcesrv_epm_Lookup(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
118 : struct epm_Lookup *r)
119 : {
120 0 : struct dcesrv_handle *h;
121 0 : struct rpc_eps {
122 : uint32_t count;
123 : struct dcesrv_ep_iface *e;
124 : } *eps;
125 0 : uint32_t num_ents;
126 0 : unsigned int i;
127 :
128 54 : DCESRV_PULL_HANDLE_FAULT(h, r->in.entry_handle, HTYPE_LOOKUP);
129 :
130 49 : eps = h->data;
131 :
132 49 : if (!eps) {
133 : /* this is the first call - fill the list. Subsequent calls
134 : will feed from this list, stored in the handle */
135 14 : eps = talloc(h, struct rpc_eps);
136 14 : if (!eps) {
137 0 : return EPMAPPER_STATUS_NO_MEMORY;
138 : }
139 14 : h->data = eps;
140 :
141 14 : eps->count = build_ep_list(h, dce_call->conn->dce_ctx->endpoint_list, &eps->e);
142 : }
143 :
144 : /* return the next N elements */
145 49 : num_ents = r->in.max_ents;
146 49 : if (num_ents > eps->count) {
147 6 : num_ents = eps->count;
148 : }
149 :
150 49 : *r->out.entry_handle = h->wire_handle;
151 49 : r->out.num_ents = talloc(mem_ctx, uint32_t);
152 49 : *r->out.num_ents = num_ents;
153 :
154 49 : 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 49 : r->out.entries = talloc_array(mem_ctx, struct epm_entry_t, num_ents);
162 49 : if (!r->out.entries) {
163 0 : return EPMAPPER_STATUS_NO_MEMORY;
164 : }
165 :
166 401 : for (i=0;i<num_ents;i++) {
167 352 : ZERO_STRUCT(r->out.entries[i].object);
168 352 : r->out.entries[i].annotation = eps->e[i].name;
169 352 : r->out.entries[i].tower = talloc(mem_ctx, struct epm_twr_t);
170 352 : if (!r->out.entries[i].tower) {
171 0 : return EPMAPPER_STATUS_NO_MEMORY;
172 : }
173 352 : r->out.entries[i].tower->tower = eps->e[i].ep;
174 : }
175 :
176 49 : eps->count -= num_ents;
177 49 : eps->e += num_ents;
178 :
179 49 : 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 6875 : static error_status_t dcesrv_epm_Map(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
188 : struct epm_Map *r)
189 : {
190 125 : uint32_t count;
191 125 : unsigned int i;
192 125 : struct dcesrv_ep_iface *eps;
193 125 : struct epm_floor *floors;
194 125 : enum dcerpc_transport_t transport;
195 125 : struct ndr_syntax_id abstract_syntax;
196 125 : struct ndr_syntax_id ndr_syntax;
197 125 : NTSTATUS status;
198 :
199 6875 : count = build_ep_list(mem_ctx, dce_call->conn->dce_ctx->endpoint_list, &eps);
200 :
201 6875 : ZERO_STRUCT(*r->out.entry_handle);
202 6875 : r->out.num_towers = talloc(mem_ctx, uint32_t);
203 6875 : if (!r->out.num_towers) {
204 0 : return EPMAPPER_STATUS_NO_MEMORY;
205 : }
206 6875 : *r->out.num_towers = 1;
207 6875 : r->out.towers = talloc(mem_ctx, struct epm_twr_p_t);
208 6875 : if (!r->out.towers) {
209 0 : return EPMAPPER_STATUS_NO_MEMORY;
210 : }
211 6875 : r->out.towers->twr = talloc(mem_ctx, struct epm_twr_t);
212 6875 : if (!r->out.towers->twr) {
213 0 : return EPMAPPER_STATUS_NO_MEMORY;
214 : }
215 :
216 6875 : if (!r->in.map_tower || r->in.max_towers == 0 ||
217 6875 : r->in.map_tower->tower.num_floors < 3) {
218 0 : goto failed;
219 : }
220 :
221 6875 : floors = r->in.map_tower->tower.floors;
222 :
223 6875 : status = dcerpc_floor_get_uuid_full(&floors[0], &abstract_syntax);
224 6875 : if (!NT_STATUS_IS_OK(status)) {
225 0 : goto failed;
226 : }
227 :
228 6875 : status = dcerpc_floor_get_uuid_full(&floors[1], &ndr_syntax);
229 6875 : if (!NT_STATUS_IS_OK(status)) {
230 0 : goto failed;
231 : }
232 :
233 6875 : if (!ndr_syntax_id_equal(&ndr_syntax, &ndr_transfer_syntax_ndr)) {
234 0 : goto failed;
235 : }
236 :
237 6875 : transport = dcerpc_transport_by_tower(&r->in.map_tower->tower);
238 :
239 6875 : if (transport == -1) {
240 132 : DEBUG(2, ("Client requested unknown transport with levels: "));
241 528 : for (i = 2; i < r->in.map_tower->tower.num_floors; i++) {
242 396 : DEBUG(2, ("%d, ", r->in.map_tower->tower.floors[i].lhs.protocol));
243 : }
244 132 : DEBUG(2, ("\n"));
245 132 : goto failed;
246 : }
247 :
248 272877 : for (i=0;i<count;i++) {
249 5245 : struct ndr_syntax_id ep_abstract_syntax;
250 5245 : int match;
251 :
252 272753 : if (transport != dcerpc_transport_by_tower(&eps[i].ep)) {
253 266134 : continue;
254 : }
255 :
256 54615 : status = dcerpc_floor_get_uuid_full(&eps[i].ep.floors[0],
257 : &ep_abstract_syntax);
258 54615 : if (!NT_STATUS_IS_OK(status)) {
259 0 : continue;
260 : }
261 :
262 54615 : match = ndr_syntax_id_equal(&ep_abstract_syntax,
263 : &abstract_syntax);
264 54615 : if (!match) {
265 47996 : continue;
266 : }
267 :
268 6619 : r->out.towers->twr->tower = eps[i].ep;
269 6619 : r->out.towers->twr->tower_length = 0;
270 6619 : return EPMAPPER_STATUS_OK;
271 : }
272 :
273 :
274 124 : failed:
275 256 : *r->out.num_towers = 0;
276 256 : r->out.towers->twr = NULL;
277 :
278 256 : return EPMAPPER_STATUS_NO_MORE_ENTRIES;
279 : }
280 :
281 8 : static error_status_t dcesrv_epm_LookupHandleFree(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
282 : struct epm_LookupHandleFree *r)
283 : {
284 8 : struct dcesrv_handle *h = NULL;
285 :
286 8 : r->out.entry_handle = r->in.entry_handle;
287 :
288 8 : DCESRV_PULL_HANDLE_FAULT(h, r->in.entry_handle, HTYPE_LOOKUP);
289 8 : TALLOC_FREE(h);
290 :
291 8 : ZERO_STRUCTP(r->out.entry_handle);
292 :
293 8 : return EPMAPPER_STATUS_OK;
294 : }
295 :
296 0 : static error_status_t dcesrv_epm_InqObject(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
297 : struct epm_InqObject *r)
298 : {
299 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
300 : }
301 :
302 0 : static error_status_t dcesrv_epm_MgmtDelete(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
303 : struct epm_MgmtDelete *r)
304 : {
305 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
306 : }
307 :
308 0 : static error_status_t dcesrv_epm_MapAuth(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
309 : struct epm_MapAuth *r)
310 : {
311 0 : DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
312 : }
313 :
314 : /* include the generated boilerplate */
315 : #include "librpc/gen_ndr/ndr_epmapper_s.c"
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