1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
|
/*
Unix SMB/CIFS implementation.
Copyright (C) Rafal Szczesniak 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
a composite functions for user management operations (add/del/chg)
*/
#include "includes.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/composite/composite.h"
#include "libcli/composite/monitor.h"
#include "librpc/gen_ndr/ndr_samr.h"
#include "libnet/composite.h"
#include "libnet/userman.h"
#include "libnet/userinfo.h"
/*
* Composite user add function
*/
static void useradd_handler(struct rpc_request*);
enum useradd_stage { USERADD_CREATE };
struct useradd_state {
enum useradd_stage stage;
struct dcerpc_pipe *pipe;
struct rpc_request *req;
struct policy_handle domain_handle;
struct samr_CreateUser createuser;
struct policy_handle user_handle;
uint32_t user_rid;
};
/**
* Stage 1 (and the only one for now): Create user account.
*/
static NTSTATUS useradd_create(struct composite_context *c,
struct useradd_state *s)
{
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
c->state = SMBCLI_REQUEST_DONE;
return NT_STATUS_OK;
}
/**
* Event handler for asynchronous request. Handles transition through
* intermediate stages of the call.
*
* @param req rpc call context
*/
static void useradd_handler(struct rpc_request *req)
{
struct composite_context *c = req->async.private;
struct useradd_state *s = talloc_get_type(c->private, struct useradd_state);
struct monitor_msg msg;
struct msg_rpc_create_user *rpc_create;
switch (s->stage) {
case USERADD_CREATE:
c->status = useradd_create(c, s);
msg.type = rpc_create_user;
rpc_create = talloc(s, struct msg_rpc_create_user);
rpc_create->rid = *s->createuser.out.rid;
msg.data = (void*)rpc_create;
msg.data_size = sizeof(*rpc_create);
break;
}
if (!NT_STATUS_IS_OK(c->status)) {
c->state = SMBCLI_REQUEST_ERROR;
}
if (c->monitor_fn) {
c->monitor_fn(&msg);
}
if (c->state >= SMBCLI_REQUEST_DONE &&
c->async.fn) {
c->async.fn(c);
}
}
/**
* Sends asynchronous useradd request
*
* @param p dce/rpc call pipe
* @param io arguments and results of the call
*/
struct composite_context *libnet_rpc_useradd_send(struct dcerpc_pipe *p,
struct libnet_rpc_useradd *io,
void (*monitor)(struct monitor_msg*))
{
struct composite_context *c;
struct useradd_state *s;
c = talloc_zero(p, struct composite_context);
if (c == NULL) goto failure;
s = talloc_zero(c, struct useradd_state);
if (s == NULL) goto failure;
s->domain_handle = io->in.domain_handle;
s->pipe = p;
c->state = SMBCLI_REQUEST_SEND;
c->private = s;
c->event_ctx = dcerpc_event_context(p);
c->monitor_fn = monitor;
/* preparing parameters to send rpc request */
s->createuser.in.domain_handle = &io->in.domain_handle;
s->createuser.in.account_name = talloc_zero(c, struct lsa_String);
s->createuser.in.account_name->string = talloc_strdup(c, io->in.username);
s->createuser.out.user_handle = &s->user_handle;
s->createuser.out.rid = &s->user_rid;
/* send request */
s->req = dcerpc_samr_CreateUser_send(p, c, &s->createuser);
/* callback handler */
s->req->async.callback = useradd_handler;
s->req->async.private = c;
s->stage = USERADD_CREATE;
return c;
failure:
talloc_free(c);
return NULL;
}
/**
* Waits for and receives result of asynchronous useradd call
*
* @param c composite context returned by asynchronous useradd call
* @param mem_ctx memory context of the call
* @param io pointer to results (and arguments) of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_useradd_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
struct libnet_rpc_useradd *io)
{
NTSTATUS status;
struct useradd_state *s;
status = composite_wait(c);
if (NT_STATUS_IS_OK(status) && io) {
/* get and return result of the call */
s = talloc_get_type(c->private, struct useradd_state);
io->out.user_handle = s->user_handle;
}
talloc_free(c);
return status;
}
/**
* Synchronous version of useradd call
*
* @param pipe dce/rpc call pipe
* @param mem_ctx memory context for the call
* @param io arguments and results of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_useradd(struct dcerpc_pipe *pipe,
TALLOC_CTX *mem_ctx,
struct libnet_rpc_useradd *io)
{
struct composite_context *c = libnet_rpc_useradd_send(pipe, io, NULL);
return libnet_rpc_useradd_recv(c, mem_ctx, io);
}
/*
* Composite user delete function
*/
static void userdel_handler(struct rpc_request*);
enum userdel_stage { USERDEL_LOOKUP, USERDEL_OPEN, USERDEL_DELETE };
struct userdel_state {
enum userdel_stage stage;
struct dcerpc_pipe *pipe;
struct rpc_request *req;
struct policy_handle domain_handle;
struct policy_handle user_handle;
struct samr_LookupNames lookupname;
struct samr_OpenUser openuser;
struct samr_DeleteUser deleteuser;
};
/**
* Stage 1: Lookup the user name and resolve it to rid
*/
static NTSTATUS userdel_lookup(struct composite_context *c,
struct userdel_state *s)
{
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
if (!s->lookupname.out.rids.count) {
/* TODO: no such user */
status = NT_STATUS_NO_SUCH_USER;
} else if (!s->lookupname.out.rids.count > 1) {
/* TODO: ambiguous username */
status = NT_STATUS_INVALID_ACCOUNT_NAME;
}
s->openuser.in.domain_handle = &s->domain_handle;
s->openuser.in.rid = s->lookupname.out.rids.ids[0];
s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
s->openuser.out.user_handle = &s->user_handle;
s->req = dcerpc_samr_OpenUser_send(s->pipe, c, &s->openuser);
s->req->async.callback = userdel_handler;
s->req->async.private = c;
s->stage = USERDEL_OPEN;
return NT_STATUS_OK;
}
/**
* Stage 2: Open user account.
*/
static NTSTATUS userdel_open(struct composite_context *c,
struct userdel_state *s)
{
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
s->deleteuser.in.user_handle = &s->user_handle;
s->deleteuser.out.user_handle = &s->user_handle;
s->req = dcerpc_samr_DeleteUser_send(s->pipe, c, &s->deleteuser);
s->req->async.callback = userdel_handler;
s->req->async.private = c;
s->stage = USERDEL_DELETE;
return NT_STATUS_OK;
}
/**
* Stage 3: Delete user account
*/
static NTSTATUS userdel_delete(struct composite_context *c,
struct userdel_state *s)
{
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
c->state = SMBCLI_REQUEST_DONE;
return NT_STATUS_OK;
}
/**
* Event handler for asynchronous request. Handles transition through
* intermediate stages of the call.
*
* @param req rpc call context
*/
static void userdel_handler(struct rpc_request *req)
{
struct composite_context *c = req->async.private;
struct userdel_state *s = talloc_get_type(c->private, struct userdel_state);
struct monitor_msg msg;
struct msg_rpc_lookup_name *msg_lookup;
struct msg_rpc_open_user *msg_open;
switch (s->stage) {
case USERDEL_LOOKUP:
c->status = userdel_lookup(c, s);
msg.type = rpc_lookup_name;
msg_lookup = talloc(s, struct msg_rpc_lookup_name);
msg_lookup->rid = s->lookupname.out.rids.ids;
msg_lookup->count = s->lookupname.out.rids.count;
msg.data = (void*)msg_lookup;
msg.data_size = sizeof(*msg_lookup);
break;
case USERDEL_OPEN:
c->status = userdel_open(c, s);
msg.type = rpc_open_user;
msg_open = talloc(s, struct msg_rpc_open_user);
msg_open->rid = s->openuser.in.rid;
msg_open->access_mask = s->openuser.in.rid;
msg.data = (void*)msg_open;
msg.data_size = sizeof(*msg_open);
break;
case USERDEL_DELETE:
c->status = userdel_delete(c, s);
msg.type = rpc_delete_user;
msg.data = NULL;
msg.data_size = 0;
break;
}
if (!NT_STATUS_IS_OK(c->status)) {
c->state = SMBCLI_REQUEST_ERROR;
}
if (c->monitor_fn) {
c->monitor_fn(&msg);
}
if (c->state >= SMBCLI_REQUEST_DONE &&
c->async.fn) {
c->async.fn(c);
}
}
/**
* Sends asynchronous userdel request
*
* @param p dce/rpc call pipe
* @param io arguments and results of the call
*/
struct composite_context *libnet_rpc_userdel_send(struct dcerpc_pipe *p,
struct libnet_rpc_userdel *io)
{
struct composite_context *c;
struct userdel_state *s;
c = talloc_zero(p, struct composite_context);
if (c == NULL) goto failure;
s = talloc_zero(c, struct userdel_state);
if (s == NULL) goto failure;
c->state = SMBCLI_REQUEST_SEND;
c->private = s;
c->event_ctx = dcerpc_event_context(p);
s->pipe = p;
s->domain_handle = io->in.domain_handle;
/* preparing parameters to send rpc request */
s->lookupname.in.domain_handle = &io->in.domain_handle;
s->lookupname.in.num_names = 1;
s->lookupname.in.names = talloc_zero(s, struct lsa_String);
s->lookupname.in.names->string = io->in.username;
/* send the request */
s->req = dcerpc_samr_LookupNames_send(p, c, &s->lookupname);
/* callback handler */
s->req->async.callback = userdel_handler;
s->req->async.private = c;
s->stage = USERDEL_LOOKUP;
return c;
failure:
talloc_free(c);
return NULL;
}
/**
* Waits for and receives results of asynchronous userdel call
*
* @param c composite context returned by asynchronous userdel call
* @param mem_ctx memory context of the call
* @param io pointer to results (and arguments) of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_userdel_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
struct libnet_rpc_userdel *io)
{
NTSTATUS status;
struct userdel_state *s;
status = composite_wait(c);
if (NT_STATUS_IS_OK(status) && io) {
s = talloc_get_type(c->private, struct userdel_state);
io->out.user_handle = s->user_handle;
}
talloc_free(c);
return status;
}
/**
* Synchronous version of userdel call
*
* @param pipe dce/rpc call pipe
* @param mem_ctx memory context for the call
* @param io arguments and results of the call
* @return nt status code of execution
*/
NTSTATUS libnet_rpc_userdel(struct dcerpc_pipe *pipe,
TALLOC_CTX *mem_ctx,
struct libnet_rpc_userdel *io)
{
struct composite_context *c = libnet_rpc_userdel_send(pipe, io);
return libnet_rpc_userdel_recv(c, mem_ctx, io);
}
static void usermod_handler(struct rpc_request*);
enum usermod_stage { USERMOD_LOOKUP, USERMOD_OPEN, USERMOD_MODIFY };
struct usermod_state {
enum usermod_stage stage;
struct dcerpc_pipe *pipe;
struct rpc_request *req;
struct policy_handle domain_handle;
struct policy_handle user_handle;
struct usermod_change change;
union samr_UserInfo info;
struct samr_LookupNames lookupname;
struct samr_OpenUser openuser;
struct samr_SetUserInfo setuser;
};
static NTSTATUS usermod_lookup(struct composite_context *c,
struct usermod_state *s)
{
NTSTATUS status;
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
if (!s->lookupname.out.rids.count) {
/* TODO: no such user */
status = NT_STATUS_NO_SUCH_USER;
} else if (!s->lookupname.out.rids.count > 1) {
/* TODO: ambiguous username */
status = NT_STATUS_INVALID_ACCOUNT_NAME;
}
s->openuser.in.domain_handle = &s->domain_handle;
s->openuser.in.rid = s->lookupname.out.rids.ids[0];
s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
s->openuser.out.user_handle = &s->user_handle;
s->req = dcerpc_samr_OpenUser_send(s->pipe, c, &s->openuser);
s->req->async.callback = usermod_handler;
s->req->async.private = c;
s->stage = USERMOD_OPEN;
return NT_STATUS_OK;
}
static NTSTATUS usermod_open(struct composite_context *c,
struct usermod_state *s)
{
union samr_UserInfo *i = &s->info;
uint16_t level;
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
s->setuser.in.user_handle = &s->user_handle;
/* Prepare UserInfo level and data based on bitmask field */
if (s->change.fields) {
if (s->change.fields & USERMOD_FIELD_ACCOUNT_NAME) {
level = 7;
i->info7.account_name.length = 2*strlen_m(s->change.account_name);
i->info7.account_name.size = 2*strlen_m(s->change.account_name);
i->info7.account_name.string = s->change.account_name;
s->change.fields ^= USERMOD_FIELD_ACCOUNT_NAME;
} else if (s->change.fields & USERMOD_FIELD_FULL_NAME) {
level = 8;
i->info8.full_name.length = 2*strlen_m(s->change.full_name);
i->info8.full_name.size = 2*strlen_m(s->change.full_name);
i->info8.full_name.string = s->change.full_name;
s->change.fields ^= USERMOD_FIELD_FULL_NAME;
} else if (s->change.fields & USERMOD_FIELD_DESCRIPTION) {
level = 13;
i->info13.description.length = 2*strlen_m(s->change.description);
i->info13.description.size = 2*strlen_m(s->change.description);
i->info13.description.string = s->change.description;
s->change.fields ^= USERMOD_FIELD_DESCRIPTION;
} else if (s->change.fields & USERMOD_FIELD_LOGON_SCRIPT) {
level = 11;
i->info11.logon_script.length = 2*strlen_m(s->change.logon_script);
i->info11.logon_script.size = 2*strlen_m(s->change.logon_script);
i->info11.logon_script.string = s->change.logon_script;
s->change.fields ^= USERMOD_FIELD_LOGON_SCRIPT;
} else if (s->change.fields & USERMOD_FIELD_PROFILE_PATH) {
level = 12;
i->info12.profile_path.length = 2*strlen_m(s->change.profile_path);
i->info12.profile_path.size = 2*strlen_m(s->change.profile_path);
i->info12.profile_path.string = s->change.profile_path;
s->change.fields ^= USERMOD_FIELD_PROFILE_PATH;
} else if (s->change.fields & USERMOD_FIELD_ACCT_EXPIRY) {
level = 17;
i->info17.acct_expiry = timeval_to_nttime(s->change.acct_expiry);
s->change.fields ^= USERMOD_FIELD_ACCT_EXPIRY;
}
}
s->setuser.in.level = level;
s->setuser.in.info = i;
s->req = dcerpc_samr_SetUserInfo_send(s->pipe, c, &s->setuser);
s->req->async.callback = usermod_handler;
s->req->async.private = c;
/* Get back here again unless all fields have been set */
if (s->change.fields) {
s->stage = USERMOD_OPEN;
} else {
s->stage = USERMOD_MODIFY;
}
return NT_STATUS_OK;
}
static NTSTATUS usermod_modify(struct composite_context *c,
struct usermod_state *s)
{
c->status = dcerpc_ndr_request_recv(s->req);
NT_STATUS_NOT_OK_RETURN(c->status);
c->state = SMBCLI_REQUEST_DONE;
return NT_STATUS_OK;
}
static void usermod_handler(struct rpc_request *req)
{
struct composite_context *c = req->async.private;
struct usermod_state *s = talloc_get_type(c->private, struct usermod_state);
struct monitor_msg msg;
switch (s->stage) {
case USERMOD_LOOKUP:
c->status = usermod_lookup(c, s);
break;
case USERMOD_OPEN:
c->status = usermod_open(c, s);
break;
case USERMOD_MODIFY:
c->status = usermod_modify(c, s);
break;
}
if (!NT_STATUS_IS_OK(c->status)) {
c->state = SMBCLI_REQUEST_ERROR;
}
if (c->monitor_fn) {
c->monitor_fn(&msg);
}
if (c->state >= SMBCLI_REQUEST_DONE &&
c->async.fn) {
c->async.fn(c);
}
}
struct composite_context *libnet_rpc_usermod_send(struct dcerpc_pipe *p,
struct libnet_rpc_usermod *io)
{
struct composite_context *c;
struct usermod_state *s;
c = talloc_zero(p, struct composite_context);
if (c == NULL) goto failure;
s = talloc_zero(c, struct usermod_state);
if (s == NULL) goto failure;
c->state = SMBCLI_REQUEST_SEND;
c->private = s;
c->event_ctx = dcerpc_event_context(p);
s->pipe = p;
s->domain_handle = io->in.domain_handle;
s->change = io->in.change;
s->lookupname.in.domain_handle = &io->in.domain_handle;
s->lookupname.in.num_names = 1;
s->lookupname.in.names = talloc_zero(s, struct lsa_String);
s->lookupname.in.names->string = io->in.username;
s->req = dcerpc_samr_LookupNames_send(p, c, &s->lookupname);
s->req->async.callback = usermod_handler;
s->req->async.private = c;
s->stage = USERMOD_LOOKUP;
return c;
failure:
talloc_free(c);
return NULL;
}
NTSTATUS libnet_rpc_usermod_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
struct libnet_rpc_usermod *io)
{
NTSTATUS status;
struct usermod_state *s;
status = composite_wait(c);
talloc_free(c);
return status;
}
NTSTATUS libnet_rpc_usermod(struct dcerpc_pipe *pipe,
TALLOC_CTX *mem_ctx,
struct libnet_rpc_usermod *io)
{
struct composite_context *c = libnet_rpc_usermod_send(pipe, io);
return libnet_rpc_usermod_recv(c, mem_ctx, io);
}
|