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r3780: final release notes
[Samba.git] / source / libsmb / clirap.c
blob8cc5d8bf9016e4c31227f863381329820f55824f
1 /*
2 Unix SMB/CIFS implementation.
3 client RAP calls
4 Copyright (C) Andrew Tridgell 1994-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #define NO_SYSLOG
22
23 #include "includes.h"
24
25
26 /****************************************************************************
27 Call a remote api on an arbitrary pipe. takes param, data and setup buffers.
28 ****************************************************************************/
29 BOOL cli_api_pipe(struct cli_state *cli, const char *pipe_name,
30 uint16 *setup, uint32 setup_count, uint32 max_setup_count,
31 char *params, uint32 param_count, uint32 max_param_count,
32 char *data, uint32 data_count, uint32 max_data_count,
33 char **rparam, uint32 *rparam_count,
34 char **rdata, uint32 *rdata_count)
35 {
36 cli_send_trans(cli, SMBtrans,
37 pipe_name,
38 0,0, /* fid, flags */
39 setup, setup_count, max_setup_count,
40 params, param_count, max_param_count,
41 data, data_count, max_data_count);
42
43 return (cli_receive_trans(cli, SMBtrans,
44 rparam, (unsigned int *)rparam_count,
45 rdata, (unsigned int *)rdata_count));
46 }
47
48 /****************************************************************************
49 call a remote api
50 ****************************************************************************/
51 BOOL cli_api(struct cli_state *cli,
52 char *param, int prcnt, int mprcnt,
53 char *data, int drcnt, int mdrcnt,
54 char **rparam, unsigned int *rprcnt,
55 char **rdata, unsigned int *rdrcnt)
56 {
57 cli_send_trans(cli,SMBtrans,
58 PIPE_LANMAN, /* Name */
59 0,0, /* fid, flags */
60 NULL,0,0, /* Setup, length, max */
61 param, prcnt, mprcnt, /* Params, length, max */
62 data, drcnt, mdrcnt /* Data, length, max */
63 );
64
65 return (cli_receive_trans(cli,SMBtrans,
66 rparam, rprcnt,
67 rdata, rdrcnt));
68 }
69
70
71 /****************************************************************************
72 perform a NetWkstaUserLogon
73 ****************************************************************************/
74 BOOL cli_NetWkstaUserLogon(struct cli_state *cli,char *user, char *workstation)
75 {
76 char *rparam = NULL;
77 char *rdata = NULL;
78 char *p;
79 unsigned int rdrcnt,rprcnt;
80 pstring param;
81
82 memset(param, 0, sizeof(param));
83
84 /* send a SMBtrans command with api NetWkstaUserLogon */
85 p = param;
86 SSVAL(p,0,132); /* api number */
87 p += 2;
88 pstrcpy_base(p,"OOWb54WrLh",param);
89 p = skip_string(p,1);
90 pstrcpy_base(p,"WB21BWDWWDDDDDDDzzzD",param);
91 p = skip_string(p,1);
92 SSVAL(p,0,1);
93 p += 2;
94 pstrcpy_base(p,user,param);
95 strupper_m(p);
96 p += 21;
97 p++;
98 p += 15;
99 p++;
100 pstrcpy_base(p, workstation, param);
101 strupper_m(p);
102 p += 16;
103 SSVAL(p, 0, CLI_BUFFER_SIZE);
104 p += 2;
105 SSVAL(p, 0, CLI_BUFFER_SIZE);
106 p += 2;
107
108 if (cli_api(cli,
109 param, PTR_DIFF(p,param),1024, /* param, length, max */
110 NULL, 0, CLI_BUFFER_SIZE, /* data, length, max */
111 &rparam, &rprcnt, /* return params, return size */
112 &rdata, &rdrcnt /* return data, return size */
113 )) {
114 cli->rap_error = rparam? SVAL(rparam,0) : -1;
115 p = rdata;
116
117 if (cli->rap_error == 0) {
118 DEBUG(4,("NetWkstaUserLogon success\n"));
119 cli->privileges = SVAL(p, 24);
120 /* The cli->eff_name field used to be set here
121 but it wasn't used anywhere else. */
122 } else {
123 DEBUG(1,("NetwkstaUserLogon gave error %d\n", cli->rap_error));
124 }
125 }
126
127 SAFE_FREE(rparam);
128 SAFE_FREE(rdata);
129 return (cli->rap_error == 0);
130 }
131
132 /****************************************************************************
133 call a NetShareEnum - try and browse available connections on a host
134 ****************************************************************************/
135 int cli_RNetShareEnum(struct cli_state *cli, void (*fn)(const char *, uint32, const char *, void *), void *state)
136 {
137 char *rparam = NULL;
138 char *rdata = NULL;
139 char *p;
140 unsigned int rdrcnt,rprcnt;
141 pstring param;
142 int count = -1;
143
144 /* now send a SMBtrans command with api RNetShareEnum */
145 p = param;
146 SSVAL(p,0,0); /* api number */
147 p += 2;
148 pstrcpy_base(p,"WrLeh",param);
149 p = skip_string(p,1);
150 pstrcpy_base(p,"B13BWz",param);
151 p = skip_string(p,1);
152 SSVAL(p,0,1);
153 /*
154 * Win2k needs a *smaller* buffer than 0xFFFF here -
155 * it returns "out of server memory" with 0xFFFF !!! JRA.
156 */
157 SSVAL(p,2,0xFFE0);
158 p += 4;
159
160 if (cli_api(cli,
161 param, PTR_DIFF(p,param), 1024, /* Param, length, maxlen */
162 NULL, 0, 0xFFE0, /* data, length, maxlen - Win2k needs a small buffer here too ! */
163 &rparam, &rprcnt, /* return params, length */
164 &rdata, &rdrcnt)) /* return data, length */
165 {
166 int res = rparam? SVAL(rparam,0) : -1;
167
168 if (res == 0 || res == ERRmoredata) {
169 int converter=SVAL(rparam,2);
170 int i;
171
172 count=SVAL(rparam,4);
173 p = rdata;
174
175 for (i=0;i<count;i++,p+=20) {
176 char *sname = p;
177 int type = SVAL(p,14);
178 int comment_offset = IVAL(p,16) & 0xFFFF;
179 const char *cmnt = comment_offset?(rdata+comment_offset-converter):"";
180 pstring s1, s2;
181
182 pull_ascii_pstring(s1, sname);
183 pull_ascii_pstring(s2, cmnt);
184
185 fn(s1, type, s2, state);
186 }
187 } else {
188 DEBUG(4,("NetShareEnum res=%d\n", res));
189 }
190 } else {
191 DEBUG(4,("NetShareEnum failed\n"));
192 }
193
194 SAFE_FREE(rparam);
195 SAFE_FREE(rdata);
196
197 return count;
198 }
199
200
201 /****************************************************************************
202 call a NetServerEnum for the specified workgroup and servertype mask. This
203 function then calls the specified callback function for each name returned.
204
205 The callback function takes 4 arguments: the machine name, the server type,
206 the comment and a state pointer.
207 ****************************************************************************/
208 BOOL cli_NetServerEnum(struct cli_state *cli, char *workgroup, uint32 stype,
209 void (*fn)(const char *, uint32, const char *, void *),
210 void *state)
211 {
212 char *rparam = NULL;
213 char *rdata = NULL;
214 unsigned int rdrcnt,rprcnt;
215 char *p;
216 pstring param;
217 int uLevel = 1;
218 int count = -1;
219
220 errno = 0; /* reset */
221
222 /* send a SMBtrans command with api NetServerEnum */
223 p = param;
224 SSVAL(p,0,0x68); /* api number */
225 p += 2;
226 pstrcpy_base(p,"WrLehDz", param);
227 p = skip_string(p,1);
228
229 pstrcpy_base(p,"B16BBDz", param);
230
231 p = skip_string(p,1);
232 SSVAL(p,0,uLevel);
233 SSVAL(p,2,CLI_BUFFER_SIZE);
234 p += 4;
235 SIVAL(p,0,stype);
236 p += 4;
237
238 p += push_ascii(p, workgroup, sizeof(pstring)-PTR_DIFF(p,param)-1, STR_TERMINATE|STR_UPPER);
239
240 if (cli_api(cli,
241 param, PTR_DIFF(p,param), 8, /* params, length, max */
242 NULL, 0, CLI_BUFFER_SIZE, /* data, length, max */
243 &rparam, &rprcnt, /* return params, return size */
244 &rdata, &rdrcnt /* return data, return size */
245 )) {
246 int res = rparam? SVAL(rparam,0) : -1;
247
248 if (res == 0 || res == ERRmoredata) {
249 int i;
250 int converter=SVAL(rparam,2);
251
252 count=SVAL(rparam,4);
253 p = rdata;
254
255 for (i = 0;i < count;i++, p += 26) {
256 char *sname = p;
257 int comment_offset = (IVAL(p,22) & 0xFFFF)-converter;
258 const char *cmnt = comment_offset?(rdata+comment_offset):"";
259 pstring s1, s2;
260
261 if (comment_offset < 0 || comment_offset > (int)rdrcnt) continue;
262
263 stype = IVAL(p,18) & ~SV_TYPE_LOCAL_LIST_ONLY;
264
265 pull_ascii_pstring(s1, sname);
266 pull_ascii_pstring(s2, cmnt);
267 fn(s1, stype, s2, state);
268 }
269 }
270 }
271
272 SAFE_FREE(rparam);
273 SAFE_FREE(rdata);
274
275 if (count < 0) {
276 errno = cli_errno(cli);
277 } else {
278 if (!count) {
279 /* this is a very special case, when the domain master for the
280 work group isn't part of the work group itself, there is something
281 wild going on */
282 errno = ENOENT;
283 }
284 }
285
286 return(count > 0);
287 }
288
289
290
291 /****************************************************************************
292 Send a SamOEMChangePassword command
293 ****************************************************************************/
294 BOOL cli_oem_change_password(struct cli_state *cli, const char *user, const char *new_password,
295 const char *old_password)
296 {
297 pstring param;
298 char data[532];
299 char *p = param;
300 unsigned char old_pw_hash[16];
301 unsigned char new_pw_hash[16];
302 unsigned int data_len;
303 unsigned int param_len = 0;
304 char *rparam = NULL;
305 char *rdata = NULL;
306 unsigned int rprcnt, rdrcnt;
307
308 if (strlen(user) >= sizeof(fstring)-1) {
309 DEBUG(0,("cli_oem_change_password: user name %s is too long.\n", user));
310 return False;
311 }
312
313 SSVAL(p,0,214); /* SamOEMChangePassword command. */
314 p += 2;
315 pstrcpy_base(p, "zsT", param);
316 p = skip_string(p,1);
317 pstrcpy_base(p, "B516B16", param);
318 p = skip_string(p,1);
319 pstrcpy_base(p,user, param);
320 p = skip_string(p,1);
321 SSVAL(p,0,532);
322 p += 2;
323
324 param_len = PTR_DIFF(p,param);
325
326 /*
327 * Get the Lanman hash of the old password, we
328 * use this as the key to make_oem_passwd_hash().
329 */
330 E_deshash(old_password, old_pw_hash);
331
332 encode_pw_buffer(data, new_password, STR_ASCII);
333
334 #ifdef DEBUG_PASSWORD
335 DEBUG(100,("make_oem_passwd_hash\n"));
336 dump_data(100, data, 516);
337 #endif
338 SamOEMhash( (unsigned char *)data, (unsigned char *)old_pw_hash, 516);
339
340 /*
341 * Now place the old password hash in the data.
342 */
343 E_deshash(new_password, new_pw_hash);
344
345 E_old_pw_hash( new_pw_hash, old_pw_hash, (uchar *)&data[516]);
346
347 data_len = 532;
348
349 if (cli_send_trans(cli,SMBtrans,
350 PIPE_LANMAN, /* name */
351 0,0, /* fid, flags */
352 NULL,0,0, /* setup, length, max */
353 param,param_len,2, /* param, length, max */
354 data,data_len,0 /* data, length, max */
355 ) == False) {
356 DEBUG(0,("cli_oem_change_password: Failed to send password change for user %s\n",
357 user ));
358 return False;
359 }
360
361 if (!cli_receive_trans(cli,SMBtrans,
362 &rparam, &rprcnt,
363 &rdata, &rdrcnt)) {
364 DEBUG(0,("cli_oem_change_password: Failed to recieve reply to password change for user %s\n",
365 user ));
366 return False;
367 }
368
369 if (rparam)
370 cli->rap_error = SVAL(rparam,0);
371
372 SAFE_FREE(rparam);
373 SAFE_FREE(rdata);
374
375 return (cli->rap_error == 0);
376 }
377
378
379 /****************************************************************************
380 send a qpathinfo call
381 ****************************************************************************/
382 BOOL cli_qpathinfo(struct cli_state *cli, const char *fname,
383 time_t *c_time, time_t *a_time, time_t *m_time,
384 size_t *size, uint16 *mode)
385 {
386 unsigned int data_len = 0;
387 unsigned int param_len = 0;
388 unsigned int rparam_len, rdata_len;
389 uint16 setup = TRANSACT2_QPATHINFO;
390 pstring param;
391 char *rparam=NULL, *rdata=NULL;
392 int count=8;
393 BOOL ret;
394 time_t (*date_fn)(void *);
395 char *p;
396
397 p = param;
398 memset(p, 0, 6);
399 SSVAL(p, 0, SMB_INFO_STANDARD);
400 p += 6;
401 p += clistr_push(cli, p, fname, sizeof(pstring)-6, STR_TERMINATE);
402
403 param_len = PTR_DIFF(p, param);
404
405 do {
406 ret = (cli_send_trans(cli, SMBtrans2,
407 NULL, /* Name */
408 -1, 0, /* fid, flags */
409 &setup, 1, 0, /* setup, length, max */
410 param, param_len, 10, /* param, length, max */
411 NULL, data_len, cli->max_xmit /* data, length, max */
412 ) &&
413 cli_receive_trans(cli, SMBtrans2,
414 &rparam, &rparam_len,
415 &rdata, &rdata_len));
416 if (!cli_is_dos_error(cli)) break;
417 if (!ret) {
418 /* we need to work around a Win95 bug - sometimes
419 it gives ERRSRV/ERRerror temprarily */
420 uint8 eclass;
421 uint32 ecode;
422 cli_dos_error(cli, &eclass, &ecode);
423 if (eclass != ERRSRV || ecode != ERRerror) break;
424 smb_msleep(100);
425 }
426 } while (count-- && ret==False);
427
428 if (!ret || !rdata || rdata_len < 22) {
429 return False;
430 }
431
432 if (cli->win95) {
433 date_fn = make_unix_date;
434 } else {
435 date_fn = make_unix_date2;
436 }
437
438 if (c_time) {
439 *c_time = date_fn(rdata+0);
440 }
441 if (a_time) {
442 *a_time = date_fn(rdata+4);
443 }
444 if (m_time) {
445 *m_time = date_fn(rdata+8);
446 }
447 if (size) {
448 *size = IVAL(rdata, 12);
449 }
450 if (mode) {
451 *mode = SVAL(rdata,l1_attrFile);
452 }
453
454 SAFE_FREE(rdata);
455 SAFE_FREE(rparam);
456 return True;
457 }
458
459 /****************************************************************************
460 send a qpathinfo call with the SMB_QUERY_FILE_ALL_INFO info level
461 ****************************************************************************/
462 BOOL cli_qpathinfo2(struct cli_state *cli, const char *fname,
463 time_t *c_time, time_t *a_time, time_t *m_time,
464 time_t *w_time, size_t *size, uint16 *mode,
465 SMB_INO_T *ino)
466 {
467 unsigned int data_len = 0;
468 unsigned int param_len = 0;
469 uint16 setup = TRANSACT2_QPATHINFO;
470 pstring param;
471 char *rparam=NULL, *rdata=NULL;
472 char *p;
473
474 p = param;
475 memset(p, 0, 6);
476 SSVAL(p, 0, SMB_QUERY_FILE_ALL_INFO);
477 p += 6;
478 p += clistr_push(cli, p, fname, sizeof(pstring)-6, STR_TERMINATE);
479
480 param_len = PTR_DIFF(p, param);
481
482 if (!cli_send_trans(cli, SMBtrans2,
483 NULL, /* name */
484 -1, 0, /* fid, flags */
485 &setup, 1, 0, /* setup, length, max */
486 param, param_len, 10, /* param, length, max */
487 NULL, data_len, cli->max_xmit /* data, length, max */
488 )) {
489 return False;
490 }
491
492 if (!cli_receive_trans(cli, SMBtrans2,
493 &rparam, &param_len,
494 &rdata, &data_len)) {
495 return False;
496 }
497
498 if (!rdata || data_len < 22) {
499 return False;
500 }
501
502 if (c_time) {
503 *c_time = interpret_long_date(rdata+0) - cli->serverzone;
504 }
505 if (a_time) {
506 *a_time = interpret_long_date(rdata+8) - cli->serverzone;
507 }
508 if (m_time) {
509 *m_time = interpret_long_date(rdata+16) - cli->serverzone;
510 }
511 if (w_time) {
512 *w_time = interpret_long_date(rdata+24) - cli->serverzone;
513 }
514 if (mode) {
515 *mode = SVAL(rdata, 32);
516 }
517 if (size) {
518 *size = IVAL(rdata, 48);
519 }
520 if (ino) {
521 *ino = IVAL(rdata, 64);
522 }
523
524 SAFE_FREE(rdata);
525 SAFE_FREE(rparam);
526 return True;
527 }
528
529
530 /****************************************************************************
531 send a qfileinfo QUERY_FILE_NAME_INFO call
532 ****************************************************************************/
533 BOOL cli_qfilename(struct cli_state *cli, int fnum,
534 pstring name)
535 {
536 unsigned int data_len = 0;
537 unsigned int param_len = 0;
538 uint16 setup = TRANSACT2_QFILEINFO;
539 pstring param;
540 char *rparam=NULL, *rdata=NULL;
541
542 param_len = 4;
543 memset(param, 0, param_len);
544 SSVAL(param, 0, fnum);
545 SSVAL(param, 2, SMB_QUERY_FILE_NAME_INFO);
546
547 if (!cli_send_trans(cli, SMBtrans2,
548 NULL, /* name */
549 -1, 0, /* fid, flags */
550 &setup, 1, 0, /* setup, length, max */
551 param, param_len, 2, /* param, length, max */
552 NULL, data_len, cli->max_xmit /* data, length, max */
553 )) {
554 return False;
555 }
556
557 if (!cli_receive_trans(cli, SMBtrans2,
558 &rparam, &param_len,
559 &rdata, &data_len)) {
560 return False;
561 }
562
563 if (!rdata || data_len < 4) {
564 return False;
565 }
566
567 clistr_pull(cli, name, rdata+4, sizeof(pstring), IVAL(rdata, 0), STR_UNICODE);
568
569 return True;
570 }
571
572
573 /****************************************************************************
574 send a qfileinfo call
575 ****************************************************************************/
576 BOOL cli_qfileinfo(struct cli_state *cli, int fnum,
577 uint16 *mode, size_t *size,
578 time_t *c_time, time_t *a_time, time_t *m_time,
579 time_t *w_time, SMB_INO_T *ino)
580 {
581 unsigned int data_len = 0;
582 unsigned int param_len = 0;
583 uint16 setup = TRANSACT2_QFILEINFO;
584 pstring param;
585 char *rparam=NULL, *rdata=NULL;
586
587 /* if its a win95 server then fail this - win95 totally screws it
588 up */
589 if (cli->win95) return False;
590
591 param_len = 4;
592
593 memset(param, 0, param_len);
594 SSVAL(param, 0, fnum);
595 SSVAL(param, 2, SMB_QUERY_FILE_ALL_INFO);
596
597 if (!cli_send_trans(cli, SMBtrans2,
598 NULL, /* name */
599 -1, 0, /* fid, flags */
600 &setup, 1, 0, /* setup, length, max */
601 param, param_len, 2, /* param, length, max */
602 NULL, data_len, cli->max_xmit /* data, length, max */
603 )) {
604 return False;
605 }
606
607 if (!cli_receive_trans(cli, SMBtrans2,
608 &rparam, &param_len,
609 &rdata, &data_len)) {
610 return False;
611 }
612
613 if (!rdata || data_len < 68) {
614 return False;
615 }
616
617 if (c_time) {
618 *c_time = interpret_long_date(rdata+0) - cli->serverzone;
619 }
620 if (a_time) {
621 *a_time = interpret_long_date(rdata+8) - cli->serverzone;
622 }
623 if (m_time) {
624 *m_time = interpret_long_date(rdata+16) - cli->serverzone;
625 }
626 if (w_time) {
627 *w_time = interpret_long_date(rdata+24) - cli->serverzone;
628 }
629 if (mode) {
630 *mode = SVAL(rdata, 32);
631 }
632 if (size) {
633 *size = IVAL(rdata, 48);
634 }
635 if (ino) {
636 *ino = IVAL(rdata, 64);
637 }
638
639 SAFE_FREE(rdata);
640 SAFE_FREE(rparam);
641 return True;
642 }
643
644 /****************************************************************************
645 send a qfileinfo call
646 ****************************************************************************/
647 BOOL cli_qfileinfo_test(struct cli_state *cli, int fnum, int level, char **poutdata, uint32 *poutlen)
648 {
649 unsigned int data_len = 0;
650 unsigned int param_len = 0;
651 uint16 setup = TRANSACT2_QFILEINFO;
652 pstring param;
653 char *rparam=NULL, *rdata=NULL;
654
655 *poutdata = NULL;
656 *poutlen = 0;
657
658 /* if its a win95 server then fail this - win95 totally screws it
659 up */
660 if (cli->win95)
661 return False;
662
663 param_len = 4;
664
665 memset(param, 0, param_len);
666 SSVAL(param, 0, fnum);
667 SSVAL(param, 2, level);
668
669 if (!cli_send_trans(cli, SMBtrans2,
670 NULL, /* name */
671 -1, 0, /* fid, flags */
672 &setup, 1, 0, /* setup, length, max */
673 param, param_len, 2, /* param, length, max */
674 NULL, data_len, cli->max_xmit /* data, length, max */
675 )) {
676 return False;
677 }
678
679 if (!cli_receive_trans(cli, SMBtrans2,
680 &rparam, &param_len,
681 &rdata, &data_len)) {
682 return False;
683 }
684
685 *poutdata = memdup(rdata, data_len);
686 *poutlen = data_len;
687
688 SAFE_FREE(rdata);
689 SAFE_FREE(rparam);
690 return True;
691 }
692
693
694
695 /****************************************************************************
696 send a qpathinfo SMB_QUERY_FILE_ALT_NAME_INFO call
697 ****************************************************************************/
698 NTSTATUS cli_qpathinfo_alt_name(struct cli_state *cli, const char *fname, fstring alt_name)
699 {
700 unsigned int data_len = 0;
701 unsigned int param_len = 0;
702 uint16 setup = TRANSACT2_QPATHINFO;
703 pstring param;
704 char *rparam=NULL, *rdata=NULL;
705 int count=8;
706 char *p;
707 BOOL ret;
708 unsigned int len;
709
710 p = param;
711 memset(p, 0, 6);
712 SSVAL(p, 0, SMB_QUERY_FILE_ALT_NAME_INFO);
713 p += 6;
714 p += clistr_push(cli, p, fname, sizeof(pstring)-6, STR_TERMINATE);
715
716 param_len = PTR_DIFF(p, param);
717
718 do {
719 ret = (cli_send_trans(cli, SMBtrans2,
720 NULL, /* Name */
721 -1, 0, /* fid, flags */
722 &setup, 1, 0, /* setup, length, max */
723 param, param_len, 10, /* param, length, max */
724 NULL, data_len, cli->max_xmit /* data, length, max */
725 ) &&
726 cli_receive_trans(cli, SMBtrans2,
727 &rparam, &param_len,
728 &rdata, &data_len));
729 if (!ret && cli_is_dos_error(cli)) {
730 /* we need to work around a Win95 bug - sometimes
731 it gives ERRSRV/ERRerror temprarily */
732 uint8 eclass;
733 uint32 ecode;
734 cli_dos_error(cli, &eclass, &ecode);
735 if (eclass != ERRSRV || ecode != ERRerror) break;
736 smb_msleep(100);
737 }
738 } while (count-- && ret==False);
739
740 if (!ret || !rdata || data_len < 4) {
741 return NT_STATUS_UNSUCCESSFUL;
742 }
743
744 len = IVAL(rdata, 0);
745
746 if (len > data_len - 4) {
747 return NT_STATUS_INVALID_NETWORK_RESPONSE;
748 }
749
750 clistr_pull(cli, alt_name, rdata+4, sizeof(fstring), len, STR_UNICODE);
751
752 SAFE_FREE(rdata);
753 SAFE_FREE(rparam);
754
755 return NT_STATUS_OK;
756 }
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