source: vendor/3.5.2/source4/lib/registry/rpc.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 13.4 KB
Line 
1/*
2 Samba Unix/Linux SMB implementation
3 RPC backend for the registry library
4 Copyright (C) 2003-2007 Jelmer Vernooij, jelmer@samba.org
5 Copyright (C) 2008 Matthias Dieter Wallnöfer, mwallnoefer@yahoo.de
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20#include "includes.h"
21#include "registry.h"
22#include "librpc/gen_ndr/ndr_winreg_c.h"
23
24#define MAX_NAMESIZE 512
25#define MAX_VALSIZE 32768
26
27struct rpc_key {
28 struct registry_key key;
29 struct policy_handle pol;
30 struct dcerpc_pipe *pipe;
31
32 const char* classname;
33 uint32_t num_subkeys;
34 uint32_t max_subkeylen;
35 uint32_t max_classlen;
36 uint32_t num_values;
37 uint32_t max_valnamelen;
38 uint32_t max_valbufsize;
39 uint32_t secdescsize;
40 NTTIME last_changed_time;
41};
42
43struct rpc_registry_context {
44 struct registry_context context;
45 struct dcerpc_pipe *pipe;
46};
47
48static struct registry_operations reg_backend_rpc;
49
50/**
51 * This is the RPC backend for the registry library.
52 */
53
54#define openhive(u) static WERROR open_ ## u(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct policy_handle *hnd) \
55{ \
56 struct winreg_Open ## u r; \
57 NTSTATUS status; \
58\
59 ZERO_STRUCT(r); \
60 r.in.system_name = NULL; \
61 r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; \
62 r.out.handle = hnd;\
63\
64 status = dcerpc_winreg_Open ## u(p, mem_ctx, &r); \
65\
66 if (!NT_STATUS_IS_OK(status)) { \
67 DEBUG(1, ("OpenHive failed - %s\n", nt_errstr(status))); \
68 return ntstatus_to_werror(status); \
69 } \
70\
71 return r.out.result;\
72}
73
74openhive(HKLM)
75openhive(HKCU)
76openhive(HKPD)
77openhive(HKU)
78openhive(HKCR)
79openhive(HKDD)
80openhive(HKCC)
81
82static struct {
83 uint32_t hkey;
84 WERROR (*open) (struct dcerpc_pipe *p, TALLOC_CTX *,
85 struct policy_handle *h);
86} known_hives[] = {
87 { HKEY_LOCAL_MACHINE, open_HKLM },
88 { HKEY_CURRENT_USER, open_HKCU },
89 { HKEY_CLASSES_ROOT, open_HKCR },
90 { HKEY_PERFORMANCE_DATA, open_HKPD },
91 { HKEY_USERS, open_HKU },
92 { HKEY_DYN_DATA, open_HKDD },
93 { HKEY_CURRENT_CONFIG, open_HKCC },
94 { 0, NULL }
95};
96
97static WERROR rpc_query_key(TALLOC_CTX *mem_ctx, const struct registry_key *k);
98
99static WERROR rpc_get_predefined_key(struct registry_context *ctx,
100 uint32_t hkey_type,
101 struct registry_key **k)
102{
103 int n;
104 struct rpc_key *mykeydata;
105 struct rpc_registry_context *rctx = talloc_get_type(ctx, struct rpc_registry_context);
106
107 *k = NULL;
108
109 for(n = 0; known_hives[n].hkey; n++) {
110 if(known_hives[n].hkey == hkey_type)
111 break;
112 }
113
114 if (known_hives[n].open == NULL) {
115 DEBUG(1, ("No such hive %d\n", hkey_type));
116 return WERR_NO_MORE_ITEMS;
117 }
118
119 mykeydata = talloc_zero(ctx, struct rpc_key);
120 mykeydata->key.context = ctx;
121 mykeydata->pipe = talloc_reference(mykeydata, rctx->pipe);
122 mykeydata->num_values = -1;
123 mykeydata->num_subkeys = -1;
124 *k = (struct registry_key *)mykeydata;
125 return known_hives[n].open(mykeydata->pipe, mykeydata, &(mykeydata->pol));
126}
127
128#if 0
129static WERROR rpc_key_put_rpc_data(TALLOC_CTX *mem_ctx, struct registry_key *k)
130{
131 struct winreg_OpenKey r;
132 struct rpc_key_data *mykeydata;
133
134 k->backend_data = mykeydata = talloc_zero(mem_ctx, struct rpc_key_data);
135 mykeydata->num_values = -1;
136 mykeydata->num_subkeys = -1;
137
138 /* Then, open the handle using the hive */
139
140 ZERO_STRUCT(r);
141 r.in.handle = &(((struct rpc_key_data *)k->hive->root->backend_data)->pol);
142 r.in.keyname.name = k->path;
143 r.in.unknown = 0x00000000;
144 r.in.access_mask = 0x02000000;
145 r.out.handle = &mykeydata->pol;
146
147 dcerpc_winreg_OpenKey((struct dcerpc_pipe *)k->hive->backend_data,
148 mem_ctx, &r);
149
150 return r.out.result;
151}
152#endif
153
154static WERROR rpc_open_key(TALLOC_CTX *mem_ctx, struct registry_key *h,
155 const char *name, struct registry_key **key)
156{
157 struct rpc_key *parentkeydata = talloc_get_type(h, struct rpc_key),
158 *mykeydata;
159 struct winreg_OpenKey r;
160 NTSTATUS status;
161
162 mykeydata = talloc_zero(mem_ctx, struct rpc_key);
163 mykeydata->key.context = parentkeydata->key.context;
164 mykeydata->pipe = talloc_reference(mykeydata, parentkeydata->pipe);
165 mykeydata->num_values = -1;
166 mykeydata->num_subkeys = -1;
167 *key = (struct registry_key *)mykeydata;
168
169 /* Then, open the handle using the hive */
170 ZERO_STRUCT(r);
171 r.in.parent_handle = &parentkeydata->pol;
172 r.in.keyname.name = name;
173 r.in.unknown = 0x00000000;
174 r.in.access_mask = 0x02000000;
175 r.out.handle = &mykeydata->pol;
176
177 status = dcerpc_winreg_OpenKey(mykeydata->pipe, mem_ctx, &r);
178
179 if (!NT_STATUS_IS_OK(status)) {
180 DEBUG(1, ("OpenKey failed - %s\n", nt_errstr(status)));
181 return ntstatus_to_werror(status);
182 }
183
184 return r.out.result;
185}
186
187static WERROR rpc_get_value_by_index(TALLOC_CTX *mem_ctx,
188 const struct registry_key *parent,
189 uint32_t n,
190 const char **value_name,
191 uint32_t *type,
192 DATA_BLOB *data)
193{
194 struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key);
195 struct winreg_EnumValue r;
196 struct winreg_ValNameBuf name;
197 uint8_t value;
198 uint32_t val_size = MAX_VALSIZE;
199 uint32_t zero = 0;
200 WERROR error;
201 NTSTATUS status;
202
203 if (mykeydata->num_values == -1) {
204 error = rpc_query_key(mem_ctx, parent);
205 if(!W_ERROR_IS_OK(error)) return error;
206 }
207
208 name.name = "";
209 name.size = MAX_NAMESIZE;
210
211 ZERO_STRUCT(r);
212 r.in.handle = &mykeydata->pol;
213 r.in.enum_index = n;
214 r.in.name = &name;
215 r.in.type = type;
216 r.in.value = &value;
217 r.in.size = &val_size;
218 r.in.length = &zero;
219 r.out.name = &name;
220 r.out.type = type;
221 r.out.value = &value;
222 r.out.size = &val_size;
223 r.out.length = &zero;
224
225 status = dcerpc_winreg_EnumValue(mykeydata->pipe, mem_ctx, &r);
226
227 if (!NT_STATUS_IS_OK(status)) {
228 DEBUG(1, ("EnumValue failed - %s\n", nt_errstr(status)));
229 return ntstatus_to_werror(status);
230 }
231
232 *value_name = talloc_reference(mem_ctx, r.out.name->name);
233 *type = *(r.out.type);
234 *data = data_blob_talloc(mem_ctx, r.out.value, *r.out.length);
235
236 return r.out.result;
237}
238
239static WERROR rpc_get_value_by_name(TALLOC_CTX *mem_ctx,
240 const struct registry_key *parent,
241 const char *value_name,
242 uint32_t *type,
243 DATA_BLOB *data)
244{
245 struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key);
246 struct winreg_QueryValue r;
247 struct winreg_String name;
248 uint8_t value;
249 uint32_t val_size = MAX_VALSIZE;
250 uint32_t zero = 0;
251 WERROR error;
252 NTSTATUS status;
253
254 if (mykeydata->num_values == -1) {
255 error = rpc_query_key(mem_ctx, parent);
256 if(!W_ERROR_IS_OK(error)) return error;
257 }
258
259 name.name = value_name;
260
261 ZERO_STRUCT(r);
262 r.in.handle = &mykeydata->pol;
263 r.in.value_name = &name;
264 r.in.type = type;
265 r.in.data = &value;
266 r.in.data_size = &val_size;
267 r.in.data_length = &zero;
268 r.out.type = type;
269 r.out.data = &value;
270 r.out.data_size = &val_size;
271 r.out.data_length = &zero;
272
273 status = dcerpc_winreg_QueryValue(mykeydata->pipe, mem_ctx, &r);
274
275 if (!NT_STATUS_IS_OK(status)) {
276 DEBUG(1, ("QueryValue failed - %s\n", nt_errstr(status)));
277 return ntstatus_to_werror(status);
278 }
279
280 *type = *(r.out.type);
281 *data = data_blob_talloc(mem_ctx, r.out.data, *r.out.data_length);
282
283 return r.out.result;
284}
285
286static WERROR rpc_get_subkey_by_index(TALLOC_CTX *mem_ctx,
287 const struct registry_key *parent,
288 uint32_t n,
289 const char **name,
290 const char **keyclass,
291 NTTIME *last_changed_time)
292{
293 struct winreg_EnumKey r;
294 struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key);
295 struct winreg_StringBuf namebuf, classbuf;
296 NTTIME change_time = 0;
297 NTSTATUS status;
298
299 namebuf.name = "";
300 namebuf.size = MAX_NAMESIZE;
301 classbuf.name = NULL;
302 classbuf.size = 0;
303
304 ZERO_STRUCT(r);
305 r.in.handle = &mykeydata->pol;
306 r.in.enum_index = n;
307 r.in.name = &namebuf;
308 r.in.keyclass = &classbuf;
309 r.in.last_changed_time = &change_time;
310 r.out.name = &namebuf;
311 r.out.keyclass = &classbuf;
312 r.out.last_changed_time = &change_time;
313
314 status = dcerpc_winreg_EnumKey(mykeydata->pipe, mem_ctx, &r);
315
316 if (!NT_STATUS_IS_OK(status)) {
317 DEBUG(1, ("EnumKey failed - %s\n", nt_errstr(status)));
318 return ntstatus_to_werror(status);
319 }
320
321 if (name != NULL)
322 *name = talloc_reference(mem_ctx, r.out.name->name);
323 if (keyclass != NULL)
324 *keyclass = talloc_reference(mem_ctx, r.out.keyclass->name);
325 if (last_changed_time != NULL)
326 *last_changed_time = *(r.out.last_changed_time);
327
328 return r.out.result;
329}
330
331static WERROR rpc_add_key(TALLOC_CTX *mem_ctx,
332 struct registry_key *parent, const char *name,
333 const char *key_class,
334 struct security_descriptor *sec,
335 struct registry_key **key)
336{
337 struct winreg_CreateKey r;
338 struct rpc_key *parentkd = talloc_get_type(parent, struct rpc_key);
339 struct rpc_key *rpck = talloc(mem_ctx, struct rpc_key);
340
341 NTSTATUS status;
342
343 ZERO_STRUCT(r);
344 r.in.handle = &parentkd->pol;
345 r.in.name.name = name;
346 r.in.keyclass.name = NULL;
347 r.in.options = 0;
348 r.in.access_mask = 0x02000000;
349 r.in.secdesc = NULL;
350 r.in.action_taken = NULL;
351 r.out.new_handle = &rpck->pol;
352 r.out.action_taken = NULL;
353
354 status = dcerpc_winreg_CreateKey(parentkd->pipe, mem_ctx, &r);
355
356 if (!NT_STATUS_IS_OK(status)) {
357 talloc_free(rpck);
358 DEBUG(1, ("CreateKey failed - %s\n", nt_errstr(status)));
359 return ntstatus_to_werror(status);
360 }
361
362 rpck->pipe = talloc_reference(rpck, parentkd->pipe);
363 *key = (struct registry_key *)rpck;
364
365 return r.out.result;
366}
367
368static WERROR rpc_query_key(TALLOC_CTX *mem_ctx, const struct registry_key *k)
369{
370 struct winreg_QueryInfoKey r;
371 struct rpc_key *mykeydata = talloc_get_type(k, struct rpc_key);
372 struct winreg_String classname;
373 NTSTATUS status;
374
375 classname.name = NULL;
376
377 ZERO_STRUCT(r);
378 r.in.handle = &mykeydata->pol;
379 r.in.classname = &classname;
380 r.out.classname = &classname;
381 r.out.num_subkeys = &mykeydata->num_subkeys;
382 r.out.max_subkeylen = &mykeydata->max_subkeylen;
383 r.out.max_classlen = &mykeydata->max_classlen;
384 r.out.num_values = &mykeydata->num_values;
385 r.out.max_valnamelen = &mykeydata->max_valnamelen;
386 r.out.max_valbufsize = &mykeydata->max_valbufsize;
387 r.out.secdescsize = &mykeydata->secdescsize;
388 r.out.last_changed_time = &mykeydata->last_changed_time;
389
390 status = dcerpc_winreg_QueryInfoKey(mykeydata->pipe, mem_ctx, &r);
391
392 if (!NT_STATUS_IS_OK(status)) {
393 DEBUG(1, ("QueryInfoKey failed - %s\n", nt_errstr(status)));
394 return ntstatus_to_werror(status);
395 }
396
397 mykeydata->classname = talloc_reference(mem_ctx, r.out.classname->name);
398
399 return r.out.result;
400}
401
402static WERROR rpc_del_key(struct registry_key *parent, const char *name)
403{
404 NTSTATUS status;
405 struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key);
406 struct winreg_DeleteKey r;
407 TALLOC_CTX *mem_ctx = talloc_init("del_key");
408
409 ZERO_STRUCT(r);
410 r.in.handle = &mykeydata->pol;
411 r.in.key.name = name;
412
413 status = dcerpc_winreg_DeleteKey(mykeydata->pipe, mem_ctx, &r);
414
415 talloc_free(mem_ctx);
416
417 if (!NT_STATUS_IS_OK(status)) {
418 DEBUG(1, ("DeleteKey failed - %s\n", nt_errstr(status)));
419 return ntstatus_to_werror(status);
420 }
421
422 return r.out.result;
423}
424
425static WERROR rpc_get_info(TALLOC_CTX *mem_ctx, const struct registry_key *key,
426 const char **classname,
427 uint32_t *num_subkeys,
428 uint32_t *num_values,
429 NTTIME *last_changed_time,
430 uint32_t *max_subkeylen,
431 uint32_t *max_valnamelen,
432 uint32_t *max_valbufsize)
433{
434 struct rpc_key *mykeydata = talloc_get_type(key, struct rpc_key);
435 WERROR error;
436
437 if (mykeydata->num_values == -1) {
438 error = rpc_query_key(mem_ctx, key);
439 if(!W_ERROR_IS_OK(error)) return error;
440 }
441
442 if (classname != NULL)
443 *classname = mykeydata->classname;
444
445 if (num_subkeys != NULL)
446 *num_subkeys = mykeydata->num_subkeys;
447
448 if (num_values != NULL)
449 *num_values = mykeydata->num_values;
450
451 if (last_changed_time != NULL)
452 *last_changed_time = mykeydata->last_changed_time;
453
454 if (max_subkeylen != NULL)
455 *max_subkeylen = mykeydata->max_subkeylen;
456
457 if (max_valnamelen != NULL)
458 *max_valnamelen = mykeydata->max_valnamelen;
459
460 if (max_valbufsize != NULL)
461 *max_valbufsize = mykeydata->max_valbufsize;
462
463 return WERR_OK;
464}
465
466static struct registry_operations reg_backend_rpc = {
467 .name = "rpc",
468 .open_key = rpc_open_key,
469 .get_predefined_key = rpc_get_predefined_key,
470 .enum_key = rpc_get_subkey_by_index,
471 .enum_value = rpc_get_value_by_index,
472 .get_value = rpc_get_value_by_name,
473 .create_key = rpc_add_key,
474 .delete_key = rpc_del_key,
475 .get_key_info = rpc_get_info,
476 .get_predefined_key = rpc_get_predefined_key,
477};
478
479_PUBLIC_ WERROR reg_open_remote(struct registry_context **ctx,
480 struct auth_session_info *session_info,
481 struct cli_credentials *credentials,
482 struct loadparm_context *lp_ctx,
483 const char *location, struct tevent_context *ev)
484{
485 NTSTATUS status;
486 struct dcerpc_pipe *p;
487 struct rpc_registry_context *rctx;
488
489 dcerpc_init(lp_ctx);
490
491 rctx = talloc(NULL, struct rpc_registry_context);
492
493 /* Default to local smbd if no connection is specified */
494 if (!location) {
495 location = talloc_strdup(rctx, "ncalrpc:");
496 }
497
498 status = dcerpc_pipe_connect(rctx /* TALLOC_CTX */,
499 &p, location,
500 &ndr_table_winreg,
501 credentials, ev, lp_ctx);
502 rctx->pipe = p;
503
504 if(NT_STATUS_IS_ERR(status)) {
505 DEBUG(1, ("Unable to open '%s': %s\n", location,
506 nt_errstr(status)));
507 talloc_free(rctx);
508 *ctx = NULL;
509 return ntstatus_to_werror(status);
510 }
511
512 *ctx = (struct registry_context *)rctx;
513 (*ctx)->ops = &reg_backend_rpc;
514
515 return WERR_OK;
516}
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