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Fix typo
[Samba.git] / source / libsmb / cliconnect.c
blobd88a5d624235da0167418379fbbb1c0211f8c57a
1 /*
2 Unix SMB/CIFS implementation.
3 client connect/disconnect routines
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Andrew Bartlett 2001-2003
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
21 #include "includes.h"
22
23 static const struct {
24 int prot;
25 const char *name;
26 } prots[] = {
27 {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
28 {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
29 {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
30 {PROTOCOL_LANMAN1,"LANMAN1.0"},
31 {PROTOCOL_LANMAN2,"LM1.2X002"},
32 {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
33 {PROTOCOL_LANMAN2,"LANMAN2.1"},
34 {PROTOCOL_LANMAN2,"Samba"},
35 {PROTOCOL_NT1,"NT LANMAN 1.0"},
36 {PROTOCOL_NT1,"NT LM 0.12"},
37 {-1,NULL}
38 };
39
40 static const char *star_smbserver_name = "*SMBSERVER";
41
42 /**
43 * Set the user session key for a connection
44 * @param cli The cli structure to add it too
45 * @param session_key The session key used. (A copy of this is taken for the cli struct)
46 *
47 */
48
49 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
50 {
51 cli->user_session_key = data_blob(session_key.data, session_key.length);
52 }
53
54 /****************************************************************************
55 Do an old lanman2 style session setup.
56 ****************************************************************************/
57
58 static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
59 const char *user,
60 const char *pass, size_t passlen,
61 const char *workgroup)
62 {
63 DATA_BLOB session_key = data_blob_null;
64 DATA_BLOB lm_response = data_blob_null;
65 fstring pword;
66 char *p;
67
68 if (passlen > sizeof(pword)-1) {
69 return NT_STATUS_INVALID_PARAMETER;
70 }
71
72 /* LANMAN servers predate NT status codes and Unicode and ignore those
73 smb flags so we must disable the corresponding default capabilities
74 that would otherwise cause the Unicode and NT Status flags to be
75 set (and even returned by the server) */
76
77 cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
78
79 /* if in share level security then don't send a password now */
80 if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
81 passlen = 0;
82
83 if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
84 /* Encrypted mode needed, and non encrypted password supplied. */
85 lm_response = data_blob(NULL, 24);
86 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
87 DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
88 return NT_STATUS_ACCESS_DENIED;
89 }
90 } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
91 /* Encrypted mode needed, and encrypted password supplied. */
92 lm_response = data_blob(pass, passlen);
93 } else if (passlen > 0) {
94 /* Plaintext mode needed, assume plaintext supplied. */
95 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
96 lm_response = data_blob(pass, passlen);
97 }
98
99 /* send a session setup command */
100 memset(cli->outbuf,'\0',smb_size);
101 cli_set_message(cli->outbuf,10, 0, True);
102 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
103 cli_setup_packet(cli);
104
105 SCVAL(cli->outbuf,smb_vwv0,0xFF);
106 SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
107 SSVAL(cli->outbuf,smb_vwv3,2);
108 SSVAL(cli->outbuf,smb_vwv4,1);
109 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
110 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
111
112 p = smb_buf(cli->outbuf);
113 memcpy(p,lm_response.data,lm_response.length);
114 p += lm_response.length;
115 p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
116 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
117 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
118 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
119 cli_setup_bcc(cli, p);
120
121 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
122 return cli_nt_error(cli);
123 }
124
125 show_msg(cli->inbuf);
126
127 if (cli_is_error(cli)) {
128 return cli_nt_error(cli);
129 }
130
131 /* use the returned vuid from now on */
132 cli->vuid = SVAL(cli->inbuf,smb_uid);
133 fstrcpy(cli->user_name, user);
134
135 if (session_key.data) {
136 /* Have plaintext orginal */
137 cli_set_session_key(cli, session_key);
138 }
139
140 return NT_STATUS_OK;
141 }
142
143 /****************************************************************************
144 Work out suitable capabilities to offer the server.
145 ****************************************************************************/
146
147 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
148 {
149 uint32 capabilities = CAP_NT_SMBS;
150
151 if (!cli->force_dos_errors)
152 capabilities |= CAP_STATUS32;
153
154 if (cli->use_level_II_oplocks)
155 capabilities |= CAP_LEVEL_II_OPLOCKS;
156
157 capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
158 return capabilities;
159 }
160
161 /****************************************************************************
162 Do a NT1 guest session setup.
163 ****************************************************************************/
164
165 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
166 {
167 char *p;
168 uint32 capabilities = cli_session_setup_capabilities(cli);
169
170 memset(cli->outbuf, '\0', smb_size);
171 cli_set_message(cli->outbuf,13,0,True);
172 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
173 cli_setup_packet(cli);
174
175 SCVAL(cli->outbuf,smb_vwv0,0xFF);
176 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
177 SSVAL(cli->outbuf,smb_vwv3,2);
178 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
179 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
180 SSVAL(cli->outbuf,smb_vwv7,0);
181 SSVAL(cli->outbuf,smb_vwv8,0);
182 SIVAL(cli->outbuf,smb_vwv11,capabilities);
183 p = smb_buf(cli->outbuf);
184 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
185 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
186 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
187 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
188 cli_setup_bcc(cli, p);
189
190 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
191 return cli_nt_error(cli);
192 }
193
194 show_msg(cli->inbuf);
195
196 if (cli_is_error(cli)) {
197 return cli_nt_error(cli);
198 }
199
200 cli->vuid = SVAL(cli->inbuf,smb_uid);
201
202 p = smb_buf(cli->inbuf);
203 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
204 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
205 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
206
207 if (strstr(cli->server_type, "Samba")) {
208 cli->is_samba = True;
209 }
210
211 fstrcpy(cli->user_name, "");
212
213 return NT_STATUS_OK;
214 }
215
216 /****************************************************************************
217 Do a NT1 plaintext session setup.
218 ****************************************************************************/
219
220 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
221 const char *user, const char *pass,
222 const char *workgroup)
223 {
224 uint32 capabilities = cli_session_setup_capabilities(cli);
225 char *p;
226 fstring lanman;
227
228 fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
229
230 memset(cli->outbuf, '\0', smb_size);
231 cli_set_message(cli->outbuf,13,0,True);
232 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
233 cli_setup_packet(cli);
234
235 SCVAL(cli->outbuf,smb_vwv0,0xFF);
236 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
237 SSVAL(cli->outbuf,smb_vwv3,2);
238 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
239 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
240 SSVAL(cli->outbuf,smb_vwv8,0);
241 SIVAL(cli->outbuf,smb_vwv11,capabilities);
242 p = smb_buf(cli->outbuf);
243
244 /* check wether to send the ASCII or UNICODE version of the password */
245
246 if ( (capabilities & CAP_UNICODE) == 0 ) {
247 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
248 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
249 }
250 else {
251 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
252 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
253 }
254
255 p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
256 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
257 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
258 p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
259 cli_setup_bcc(cli, p);
260
261 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
262 return cli_nt_error(cli);
263 }
264
265 show_msg(cli->inbuf);
266
267 if (cli_is_error(cli)) {
268 return cli_nt_error(cli);
269 }
270
271 cli->vuid = SVAL(cli->inbuf,smb_uid);
272 p = smb_buf(cli->inbuf);
273 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
274 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
275 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
276 fstrcpy(cli->user_name, user);
277
278 if (strstr(cli->server_type, "Samba")) {
279 cli->is_samba = True;
280 }
281
282 return NT_STATUS_OK;
283 }
284
285 /****************************************************************************
286 do a NT1 NTLM/LM encrypted session setup - for when extended security
287 is not negotiated.
288 @param cli client state to create do session setup on
289 @param user username
290 @param pass *either* cleartext password (passlen !=24) or LM response.
291 @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
292 @param workgroup The user's domain.
293 ****************************************************************************/
294
295 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
296 const char *pass, size_t passlen,
297 const char *ntpass, size_t ntpasslen,
298 const char *workgroup)
299 {
300 uint32 capabilities = cli_session_setup_capabilities(cli);
301 DATA_BLOB lm_response = data_blob_null;
302 DATA_BLOB nt_response = data_blob_null;
303 DATA_BLOB session_key = data_blob_null;
304 NTSTATUS result;
305 char *p;
306
307 if (passlen == 0) {
308 /* do nothing - guest login */
309 } else if (passlen != 24) {
310 if (lp_client_ntlmv2_auth()) {
311 DATA_BLOB server_chal;
312 DATA_BLOB names_blob;
313 server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
314
315 /* note that the 'workgroup' here is a best guess - we don't know
316 the server's domain at this point. The 'server name' is also
317 dodgy...
318 */
319 names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
320
321 if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
322 &names_blob,
323 &lm_response, &nt_response, &session_key)) {
324 data_blob_free(&names_blob);
325 data_blob_free(&server_chal);
326 return NT_STATUS_ACCESS_DENIED;
327 }
328 data_blob_free(&names_blob);
329 data_blob_free(&server_chal);
330
331 } else {
332 uchar nt_hash[16];
333 E_md4hash(pass, nt_hash);
334
335 #ifdef LANMAN_ONLY
336 nt_response = data_blob_null;
337 #else
338 nt_response = data_blob(NULL, 24);
339 SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
340 #endif
341 /* non encrypted password supplied. Ignore ntpass. */
342 if (lp_client_lanman_auth()) {
343 lm_response = data_blob(NULL, 24);
344 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
345 /* Oops, the LM response is invalid, just put
346 the NT response there instead */
347 data_blob_free(&lm_response);
348 lm_response = data_blob(nt_response.data, nt_response.length);
349 }
350 } else {
351 /* LM disabled, place NT# in LM field instead */
352 lm_response = data_blob(nt_response.data, nt_response.length);
353 }
354
355 session_key = data_blob(NULL, 16);
356 #ifdef LANMAN_ONLY
357 E_deshash(pass, session_key.data);
358 memset(&session_key.data[8], '\0', 8);
359 #else
360 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
361 #endif
362 }
363 #ifdef LANMAN_ONLY
364 cli_simple_set_signing(cli, session_key, lm_response);
365 #else
366 cli_simple_set_signing(cli, session_key, nt_response);
367 #endif
368 } else {
369 /* pre-encrypted password supplied. Only used for
370 security=server, can't do
371 signing because we don't have original key */
372
373 lm_response = data_blob(pass, passlen);
374 nt_response = data_blob(ntpass, ntpasslen);
375 }
376
377 /* send a session setup command */
378 memset(cli->outbuf,'\0',smb_size);
379
380 cli_set_message(cli->outbuf,13,0,True);
381 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
382 cli_setup_packet(cli);
383
384 SCVAL(cli->outbuf,smb_vwv0,0xFF);
385 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
386 SSVAL(cli->outbuf,smb_vwv3,2);
387 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
388 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
389 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
390 SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
391 SIVAL(cli->outbuf,smb_vwv11,capabilities);
392 p = smb_buf(cli->outbuf);
393 if (lm_response.length) {
394 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
395 }
396 if (nt_response.length) {
397 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
398 }
399 p += clistr_push(cli, p, user, -1, STR_TERMINATE);
400
401 /* Upper case here might help some NTLMv2 implementations */
402 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
403 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
404 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
405 cli_setup_bcc(cli, p);
406
407 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
408 result = cli_nt_error(cli);
409 goto end;
410 }
411
412 /* show_msg(cli->inbuf); */
413
414 if (cli_is_error(cli)) {
415 result = cli_nt_error(cli);
416 goto end;
417 }
418
419 /* use the returned vuid from now on */
420 cli->vuid = SVAL(cli->inbuf,smb_uid);
421
422 p = smb_buf(cli->inbuf);
423 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
424 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
425 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
426
427 if (strstr(cli->server_type, "Samba")) {
428 cli->is_samba = True;
429 }
430
431 fstrcpy(cli->user_name, user);
432
433 if (session_key.data) {
434 /* Have plaintext orginal */
435 cli_set_session_key(cli, session_key);
436 }
437
438 result = NT_STATUS_OK;
439 end:
440 data_blob_free(&lm_response);
441 data_blob_free(&nt_response);
442 data_blob_free(&session_key);
443 return result;
444 }
445
446 /****************************************************************************
447 Send a extended security session setup blob
448 ****************************************************************************/
449
450 static bool cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
451 {
452 uint32 capabilities = cli_session_setup_capabilities(cli);
453 char *p;
454
455 capabilities |= CAP_EXTENDED_SECURITY;
456
457 /* send a session setup command */
458 memset(cli->outbuf,'\0',smb_size);
459
460 cli_set_message(cli->outbuf,12,0,True);
461 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
462
463 cli_setup_packet(cli);
464
465 SCVAL(cli->outbuf,smb_vwv0,0xFF);
466 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
467 SSVAL(cli->outbuf,smb_vwv3,2);
468 SSVAL(cli->outbuf,smb_vwv4,1);
469 SIVAL(cli->outbuf,smb_vwv5,0);
470 SSVAL(cli->outbuf,smb_vwv7,blob.length);
471 SIVAL(cli->outbuf,smb_vwv10,capabilities);
472 p = smb_buf(cli->outbuf);
473 memcpy(p, blob.data, blob.length);
474 p += blob.length;
475 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
476 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
477 cli_setup_bcc(cli, p);
478 return cli_send_smb(cli);
479 }
480
481 /****************************************************************************
482 Send a extended security session setup blob, returning a reply blob.
483 ****************************************************************************/
484
485 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
486 {
487 DATA_BLOB blob2 = data_blob_null;
488 char *p;
489 size_t len;
490
491 if (!cli_receive_smb(cli))
492 return blob2;
493
494 show_msg(cli->inbuf);
495
496 if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
497 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
498 return blob2;
499 }
500
501 /* use the returned vuid from now on */
502 cli->vuid = SVAL(cli->inbuf,smb_uid);
503
504 p = smb_buf(cli->inbuf);
505
506 blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
507
508 p += blob2.length;
509 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
510
511 /* w2k with kerberos doesn't properly null terminate this field */
512 len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
513 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
514
515 return blob2;
516 }
517
518 #ifdef HAVE_KRB5
519 /****************************************************************************
520 Send a extended security session setup blob, returning a reply blob.
521 ****************************************************************************/
522
523 /* The following is calculated from :
524 * (smb_size-4) = 35
525 * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
526 * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
527 * end of packet.
528 */
529
530 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
531
532 static bool cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob, DATA_BLOB session_key_krb5)
533 {
534 int32 remaining = blob.length;
535 int32 cur = 0;
536 DATA_BLOB send_blob = data_blob_null;
537 int32 max_blob_size = 0;
538 DATA_BLOB receive_blob = data_blob_null;
539
540 if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
541 DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
542 "(was %u, need minimum %u)\n",
543 (unsigned int)cli->max_xmit,
544 BASE_SESSSETUP_BLOB_PACKET_SIZE));
545 cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
546 return False;
547 }
548
549 max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
550
551 while ( remaining > 0) {
552 if (remaining >= max_blob_size) {
553 send_blob.length = max_blob_size;
554 remaining -= max_blob_size;
555 } else {
556 DATA_BLOB null_blob = data_blob_null;
557
558 send_blob.length = remaining;
559 remaining = 0;
560
561 /* This is the last packet in the sequence - turn signing on. */
562 cli_simple_set_signing(cli, session_key_krb5, null_blob);
563 }
564
565 send_blob.data = &blob.data[cur];
566 cur += send_blob.length;
567
568 DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
569 (unsigned int)remaining,
570 (unsigned int)send_blob.length,
571 (unsigned int)cur ));
572
573 if (!cli_session_setup_blob_send(cli, send_blob)) {
574 DEBUG(0, ("cli_session_setup_blob: send failed\n"));
575 return False;
576 }
577
578 receive_blob = cli_session_setup_blob_receive(cli);
579 data_blob_free(&receive_blob);
580
581 if (cli_is_error(cli) &&
582 !NT_STATUS_EQUAL( cli_get_nt_error(cli),
583 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
584 DEBUG(0, ("cli_session_setup_blob: receive failed "
585 "(%s)\n", nt_errstr(cli_get_nt_error(cli))));
586 cli->vuid = 0;
587 return False;
588 }
589 }
590
591 return True;
592 }
593
594 /****************************************************************************
595 Use in-memory credentials cache
596 ****************************************************************************/
597
598 static void use_in_memory_ccache(void) {
599 setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
600 }
601
602 /****************************************************************************
603 Do a spnego/kerberos encrypted session setup.
604 ****************************************************************************/
605
606 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
607 {
608 DATA_BLOB negTokenTarg;
609 DATA_BLOB session_key_krb5;
610 int rc;
611
612 DEBUG(2,("Doing kerberos session setup\n"));
613
614 /* generate the encapsulated kerberos5 ticket */
615 rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
616
617 if (rc) {
618 DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
619 error_message(rc)));
620 return ADS_ERROR_KRB5(rc);
621 }
622
623 #if 0
624 file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
625 #endif
626
627 if (!cli_session_setup_blob(cli, negTokenTarg, session_key_krb5)) {
628 data_blob_free(&negTokenTarg);
629 data_blob_free(&session_key_krb5);
630 return ADS_ERROR_NT(cli_nt_error(cli));
631 }
632
633 cli_set_session_key(cli, session_key_krb5);
634
635 data_blob_free(&negTokenTarg);
636 data_blob_free(&session_key_krb5);
637
638 if (cli_is_error(cli)) {
639 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
640 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
641 }
642 }
643 return ADS_ERROR_NT(cli_nt_error(cli));
644 }
645 #endif /* HAVE_KRB5 */
646
647
648 /****************************************************************************
649 Do a spnego/NTLMSSP encrypted session setup.
650 ****************************************************************************/
651
652 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
653 const char *pass, const char *domain)
654 {
655 struct ntlmssp_state *ntlmssp_state;
656 NTSTATUS nt_status;
657 int turn = 1;
658 DATA_BLOB msg1;
659 DATA_BLOB blob = data_blob_null;
660 DATA_BLOB blob_in = data_blob_null;
661 DATA_BLOB blob_out = data_blob_null;
662
663 cli_temp_set_signing(cli);
664
665 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
666 return nt_status;
667 }
668 ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
669
670 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
671 return nt_status;
672 }
673 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
674 return nt_status;
675 }
676 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
677 return nt_status;
678 }
679
680 do {
681 nt_status = ntlmssp_update(ntlmssp_state,
682 blob_in, &blob_out);
683 data_blob_free(&blob_in);
684 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
685 if (turn == 1) {
686 /* and wrap it in a SPNEGO wrapper */
687 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
688 } else {
689 /* wrap it in SPNEGO */
690 msg1 = spnego_gen_auth(blob_out);
691 }
692
693 /* now send that blob on its way */
694 if (!cli_session_setup_blob_send(cli, msg1)) {
695 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
696 nt_status = NT_STATUS_UNSUCCESSFUL;
697 } else {
698 blob = cli_session_setup_blob_receive(cli);
699
700 nt_status = cli_nt_error(cli);
701 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
702 if (cli->smb_rw_error == SMB_READ_BAD_SIG) {
703 nt_status = NT_STATUS_ACCESS_DENIED;
704 } else {
705 nt_status = NT_STATUS_UNSUCCESSFUL;
706 }
707 }
708 }
709 data_blob_free(&msg1);
710 }
711
712 if (!blob.length) {
713 if (NT_STATUS_IS_OK(nt_status)) {
714 nt_status = NT_STATUS_UNSUCCESSFUL;
715 }
716 } else if ((turn == 1) &&
717 NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
718 DATA_BLOB tmp_blob = data_blob_null;
719 /* the server might give us back two challenges */
720 if (!spnego_parse_challenge(blob, &blob_in,
721 &tmp_blob)) {
722 DEBUG(3,("Failed to parse challenges\n"));
723 nt_status = NT_STATUS_INVALID_PARAMETER;
724 }
725 data_blob_free(&tmp_blob);
726 } else {
727 if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
728 &blob_in)) {
729 DEBUG(3,("Failed to parse auth response\n"));
730 if (NT_STATUS_IS_OK(nt_status)
731 || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
732 nt_status = NT_STATUS_INVALID_PARAMETER;
733 }
734 }
735 data_blob_free(&blob);
736 data_blob_free(&blob_out);
737 turn++;
738 } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
739
740 data_blob_free(&blob_in);
741
742 if (NT_STATUS_IS_OK(nt_status)) {
743
744 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
745 ntlmssp_state->session_key.length);
746 DATA_BLOB null_blob = data_blob_null;
747 bool res;
748
749 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
750 cli_set_session_key(cli, ntlmssp_state->session_key);
751
752 res = cli_simple_set_signing(cli, key, null_blob);
753
754 data_blob_free(&key);
755
756 if (res) {
757
758 /* 'resign' the last message, so we get the right sequence numbers
759 for checking the first reply from the server */
760 cli_calculate_sign_mac(cli);
761
762 if (!cli_check_sign_mac(cli)) {
763 nt_status = NT_STATUS_ACCESS_DENIED;
764 }
765 }
766 }
767
768 /* we have a reference conter on ntlmssp_state, if we are signing
769 then the state will be kept by the signing engine */
770
771 ntlmssp_end(&ntlmssp_state);
772
773 if (!NT_STATUS_IS_OK(nt_status)) {
774 cli->vuid = 0;
775 }
776 return nt_status;
777 }
778
779 /****************************************************************************
780 Do a spnego encrypted session setup.
781 ****************************************************************************/
782
783 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
784 const char *pass, const char *domain)
785 {
786 char *principal;
787 char *OIDs[ASN1_MAX_OIDS];
788 int i;
789 bool got_kerberos_mechanism = False;
790 DATA_BLOB blob;
791
792 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
793
794 /* the server might not even do spnego */
795 if (cli->secblob.length <= 16) {
796 DEBUG(3,("server didn't supply a full spnego negprot\n"));
797 goto ntlmssp;
798 }
799
800 #if 0
801 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
802 #endif
803
804 /* there is 16 bytes of GUID before the real spnego packet starts */
805 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
806
807 /* the server sent us the first part of the SPNEGO exchange in the negprot
808 reply */
809 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
810 data_blob_free(&blob);
811 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
812 }
813 data_blob_free(&blob);
814
815 /* make sure the server understands kerberos */
816 for (i=0;OIDs[i];i++) {
817 DEBUG(3,("got OID=%s\n", OIDs[i]));
818 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
819 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
820 got_kerberos_mechanism = True;
821 }
822 free(OIDs[i]);
823 }
824
825 DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
826
827 if (got_kerberos_mechanism && (principal == NULL)) {
828 /*
829 * It is WRONG to depend on the principal sent in the negprot
830 * reply, but right now we do it. So for safety (don't
831 * segfault later) disable Kerberos when no principal was
832 * sent. -- VL
833 */
834 DEBUG(1, ("Kerberos mech was offered, but no principal was "
835 "sent, disabling Kerberos\n"));
836 cli->use_kerberos = False;
837 }
838
839 fstrcpy(cli->user_name, user);
840
841 #ifdef HAVE_KRB5
842 /* If password is set we reauthenticate to kerberos server
843 * and do not store results */
844
845 if (got_kerberos_mechanism && cli->use_kerberos) {
846 ADS_STATUS rc;
847
848 if (pass && *pass) {
849 int ret;
850
851 use_in_memory_ccache();
852 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
853
854 if (ret){
855 SAFE_FREE(principal);
856 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
857 if (cli->fallback_after_kerberos)
858 goto ntlmssp;
859 return ADS_ERROR_KRB5(ret);
860 }
861 }
862
863 /* If we get a bad principal, try to guess it if
864 we have a valid host NetBIOS name.
865 */
866 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
867 SAFE_FREE(principal);
868 }
869
870 if (principal == NULL &&
871 !is_ipaddress(cli->desthost) &&
872 !strequal(star_smbserver_name,
873 cli->desthost)) {
874 char *realm = NULL;
875 char *machine = NULL;
876 char *host = NULL;
877 DEBUG(3,("cli_session_setup_spnego: got a "
878 "bad server principal, trying to guess ...\n"));
879
880 host = strchr_m(cli->desthost, '.');
881 if (host) {
882 machine = SMB_STRNDUP(cli->desthost,
883 host - cli->desthost);
884 } else {
885 machine = SMB_STRDUP(cli->desthost);
886 }
887 if (machine == NULL) {
888 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
889 }
890
891 realm = kerberos_get_default_realm_from_ccache();
892 if (realm && *realm) {
893 if (asprintf(&principal, "%s$@%s",
894 machine, realm) < 0) {
895 SAFE_FREE(machine);
896 SAFE_FREE(realm);
897 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
898 }
899 DEBUG(3,("cli_session_setup_spnego: guessed "
900 "server principal=%s\n",
901 principal ? principal : "<null>"));
902 }
903 SAFE_FREE(machine);
904 SAFE_FREE(realm);
905 }
906
907 if (principal) {
908 rc = cli_session_setup_kerberos(cli, principal, domain);
909 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
910 SAFE_FREE(principal);
911 return rc;
912 }
913 }
914 }
915 #endif
916
917 SAFE_FREE(principal);
918
919 ntlmssp:
920
921 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
922 }
923
924 /****************************************************************************
925 Send a session setup. The username and workgroup is in UNIX character
926 format and must be converted to DOS codepage format before sending. If the
927 password is in plaintext, the same should be done.
928 ****************************************************************************/
929
930 NTSTATUS cli_session_setup(struct cli_state *cli,
931 const char *user,
932 const char *pass, int passlen,
933 const char *ntpass, int ntpasslen,
934 const char *workgroup)
935 {
936 char *p;
937 fstring user2;
938
939 if (user) {
940 fstrcpy(user2, user);
941 } else {
942 user2[0] ='\0';
943 }
944
945 if (!workgroup) {
946 workgroup = "";
947 }
948
949 /* allow for workgroups as part of the username */
950 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
951 (p=strchr_m(user2,*lp_winbind_separator()))) {
952 *p = 0;
953 user = p+1;
954 workgroup = user2;
955 }
956
957 if (cli->protocol < PROTOCOL_LANMAN1) {
958 return NT_STATUS_OK;
959 }
960
961 /* now work out what sort of session setup we are going to
962 do. I have split this into separate functions to make the
963 flow a bit easier to understand (tridge) */
964
965 /* if its an older server then we have to use the older request format */
966
967 if (cli->protocol < PROTOCOL_NT1) {
968 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
969 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
970 " is disabled\n"));
971 return NT_STATUS_ACCESS_DENIED;
972 }
973
974 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
975 !lp_client_plaintext_auth() && (*pass)) {
976 DEBUG(1, ("Server requested plaintext password but "
977 "'client plaintext auth' is disabled\n"));
978 return NT_STATUS_ACCESS_DENIED;
979 }
980
981 return cli_session_setup_lanman2(cli, user, pass, passlen,
982 workgroup);
983 }
984
985 /* if no user is supplied then we have to do an anonymous connection.
986 passwords are ignored */
987
988 if (!user || !*user)
989 return cli_session_setup_guest(cli);
990
991 /* if the server is share level then send a plaintext null
992 password at this point. The password is sent in the tree
993 connect */
994
995 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
996 return cli_session_setup_plaintext(cli, user, "", workgroup);
997
998 /* if the server doesn't support encryption then we have to use
999 plaintext. The second password is ignored */
1000
1001 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1002 if (!lp_client_plaintext_auth() && (*pass)) {
1003 DEBUG(1, ("Server requested plaintext password but "
1004 "'client plaintext auth' is disabled\n"));
1005 return NT_STATUS_ACCESS_DENIED;
1006 }
1007 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1008 }
1009
1010 /* if the server supports extended security then use SPNEGO */
1011
1012 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1013 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
1014 if (!ADS_ERR_OK(status)) {
1015 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1016 return ads_ntstatus(status);
1017 }
1018 } else {
1019 NTSTATUS status;
1020
1021 /* otherwise do a NT1 style session setup */
1022 status = cli_session_setup_nt1(cli, user, pass, passlen,
1023 ntpass, ntpasslen, workgroup);
1024 if (!NT_STATUS_IS_OK(status)) {
1025 DEBUG(3,("cli_session_setup: NT1 session setup "
1026 "failed: %s\n", nt_errstr(status)));
1027 return status;
1028 }
1029 }
1030
1031 if (strstr(cli->server_type, "Samba")) {
1032 cli->is_samba = True;
1033 }
1034
1035 return NT_STATUS_OK;
1036
1037 }
1038
1039 /****************************************************************************
1040 Send a uloggoff.
1041 *****************************************************************************/
1042
1043 bool cli_ulogoff(struct cli_state *cli)
1044 {
1045 memset(cli->outbuf,'\0',smb_size);
1046 cli_set_message(cli->outbuf,2,0,True);
1047 SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1048 cli_setup_packet(cli);
1049 SSVAL(cli->outbuf,smb_vwv0,0xFF);
1050 SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
1051
1052 cli_send_smb(cli);
1053 if (!cli_receive_smb(cli))
1054 return False;
1055
1056 if (cli_is_error(cli)) {
1057 return False;
1058 }
1059
1060 cli->cnum = -1;
1061 return True;
1062 }
1063
1064 /****************************************************************************
1065 Send a tconX.
1066 ****************************************************************************/
1067
1068 bool cli_send_tconX(struct cli_state *cli,
1069 const char *share, const char *dev, const char *pass, int passlen)
1070 {
1071 fstring fullshare, pword;
1072 char *p;
1073 memset(cli->outbuf,'\0',smb_size);
1074 memset(cli->inbuf,'\0',smb_size);
1075
1076 fstrcpy(cli->share, share);
1077
1078 /* in user level security don't send a password now */
1079 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1080 passlen = 1;
1081 pass = "";
1082 } else if (!pass) {
1083 DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1084 return False;
1085 }
1086
1087 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1088 *pass && passlen != 24) {
1089 if (!lp_client_lanman_auth()) {
1090 DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
1091 " is disabled\n"));
1092 return False;
1093 }
1094
1095 /*
1096 * Non-encrypted passwords - convert to DOS codepage before encryption.
1097 */
1098 passlen = 24;
1099 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1100 } else {
1101 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1102 if (!lp_client_plaintext_auth() && (*pass)) {
1103 DEBUG(1, ("Server requested plaintext "
1104 "password but 'client plaintext "
1105 "auth' is disabled\n"));
1106 return False;
1107 }
1108
1109 /*
1110 * Non-encrypted passwords - convert to DOS codepage before using.
1111 */
1112 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1113
1114 } else {
1115 if (passlen) {
1116 memcpy(pword, pass, passlen);
1117 }
1118 }
1119 }
1120
1121 slprintf(fullshare, sizeof(fullshare)-1,
1122 "\\\\%s\\%s", cli->desthost, share);
1123
1124 cli_set_message(cli->outbuf,4, 0, True);
1125 SCVAL(cli->outbuf,smb_com,SMBtconX);
1126 cli_setup_packet(cli);
1127
1128 SSVAL(cli->outbuf,smb_vwv0,0xFF);
1129 SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1130 SSVAL(cli->outbuf,smb_vwv3,passlen);
1131
1132 p = smb_buf(cli->outbuf);
1133 if (passlen) {
1134 memcpy(p,pword,passlen);
1135 }
1136 p += passlen;
1137 p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
1138 p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
1139
1140 cli_setup_bcc(cli, p);
1141
1142 cli_send_smb(cli);
1143 if (!cli_receive_smb(cli))
1144 return False;
1145
1146 if (cli_is_error(cli))
1147 return False;
1148
1149 clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
1150
1151 if (cli->protocol >= PROTOCOL_NT1 &&
1152 smb_buflen(cli->inbuf) == 3) {
1153 /* almost certainly win95 - enable bug fixes */
1154 cli->win95 = True;
1155 }
1156
1157 /* Make sure that we have the optional support 16-bit field. WCT > 2 */
1158 /* Avoids issues when connecting to Win9x boxes sharing files */
1159
1160 cli->dfsroot = False;
1161 if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1162 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1163
1164 cli->cnum = SVAL(cli->inbuf,smb_tid);
1165 return True;
1166 }
1167
1168 /****************************************************************************
1169 Send a tree disconnect.
1170 ****************************************************************************/
1171
1172 bool cli_tdis(struct cli_state *cli)
1173 {
1174 memset(cli->outbuf,'\0',smb_size);
1175 cli_set_message(cli->outbuf,0,0,True);
1176 SCVAL(cli->outbuf,smb_com,SMBtdis);
1177 SSVAL(cli->outbuf,smb_tid,cli->cnum);
1178 cli_setup_packet(cli);
1179
1180 cli_send_smb(cli);
1181 if (!cli_receive_smb(cli))
1182 return False;
1183
1184 if (cli_is_error(cli)) {
1185 return False;
1186 }
1187
1188 cli->cnum = -1;
1189 return True;
1190 }
1191
1192 /****************************************************************************
1193 Send a negprot command.
1194 ****************************************************************************/
1195
1196 void cli_negprot_send(struct cli_state *cli)
1197 {
1198 char *p;
1199 int numprots;
1200
1201 if (cli->protocol < PROTOCOL_NT1)
1202 cli->use_spnego = False;
1203
1204 memset(cli->outbuf,'\0',smb_size);
1205
1206 /* setup the protocol strings */
1207 cli_set_message(cli->outbuf,0,0,True);
1208
1209 p = smb_buf(cli->outbuf);
1210 for (numprots=0;
1211 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1212 numprots++) {
1213 *p++ = 2;
1214 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1215 }
1216
1217 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1218 cli_setup_bcc(cli, p);
1219 cli_setup_packet(cli);
1220
1221 SCVAL(smb_buf(cli->outbuf),0,2);
1222
1223 cli_send_smb(cli);
1224 }
1225
1226 /****************************************************************************
1227 Send a negprot command.
1228 ****************************************************************************/
1229
1230 bool cli_negprot(struct cli_state *cli)
1231 {
1232 char *p;
1233 int numprots;
1234 int plength;
1235
1236 if (cli->protocol < PROTOCOL_NT1)
1237 cli->use_spnego = False;
1238
1239 memset(cli->outbuf,'\0',smb_size);
1240
1241 /* setup the protocol strings */
1242 for (plength=0,numprots=0;
1243 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1244 numprots++)
1245 plength += strlen(prots[numprots].name)+2;
1246
1247 cli_set_message(cli->outbuf,0,plength,True);
1248
1249 p = smb_buf(cli->outbuf);
1250 for (numprots=0;
1251 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1252 numprots++) {
1253 *p++ = 2;
1254 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1255 }
1256
1257 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1258 cli_setup_packet(cli);
1259
1260 SCVAL(smb_buf(cli->outbuf),0,2);
1261
1262 cli_send_smb(cli);
1263 if (!cli_receive_smb(cli))
1264 return False;
1265
1266 show_msg(cli->inbuf);
1267
1268 if (cli_is_error(cli) ||
1269 ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1270 return(False);
1271 }
1272
1273 cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1274
1275 if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1276 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1277 return False;
1278 }
1279
1280 if (cli->protocol >= PROTOCOL_NT1) {
1281 struct timespec ts;
1282 /* NT protocol */
1283 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1284 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1285 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1286 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1287 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1288 cli->serverzone *= 60;
1289 /* this time arrives in real GMT */
1290 ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1291 cli->servertime = ts.tv_sec;
1292 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1293 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1294 if (cli->capabilities & CAP_RAW_MODE) {
1295 cli->readbraw_supported = True;
1296 cli->writebraw_supported = True;
1297 }
1298 /* work out if they sent us a workgroup */
1299 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1300 smb_buflen(cli->inbuf) > 8) {
1301 clistr_pull(cli, cli->server_domain,
1302 smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1303 smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1304 }
1305
1306 /*
1307 * As signing is slow we only turn it on if either the client or
1308 * the server require it. JRA.
1309 */
1310
1311 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1312 /* Fail if server says signing is mandatory and we don't want to support it. */
1313 if (!cli->sign_info.allow_smb_signing) {
1314 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1315 return False;
1316 }
1317 cli->sign_info.negotiated_smb_signing = True;
1318 cli->sign_info.mandatory_signing = True;
1319 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1320 /* Fail if client says signing is mandatory and the server doesn't support it. */
1321 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1322 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1323 return False;
1324 }
1325 cli->sign_info.negotiated_smb_signing = True;
1326 cli->sign_info.mandatory_signing = True;
1327 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1328 cli->sign_info.negotiated_smb_signing = True;
1329 }
1330
1331 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1332 SAFE_FREE(cli->outbuf);
1333 SAFE_FREE(cli->inbuf);
1334 cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1335 cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1336 cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1337 }
1338
1339 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1340 cli->use_spnego = False;
1341 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1342 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1343 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1344 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1345 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1346 cli->serverzone *= 60;
1347 /* this time is converted to GMT by make_unix_date */
1348 cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1349 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1350 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1351 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1352 } else {
1353 /* the old core protocol */
1354 cli->use_spnego = False;
1355 cli->sec_mode = 0;
1356 cli->serverzone = get_time_zone(time(NULL));
1357 }
1358
1359 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1360
1361 /* a way to force ascii SMB */
1362 if (getenv("CLI_FORCE_ASCII"))
1363 cli->capabilities &= ~CAP_UNICODE;
1364
1365 return True;
1366 }
1367
1368 /****************************************************************************
1369 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1370 ****************************************************************************/
1371
1372 bool cli_session_request(struct cli_state *cli,
1373 struct nmb_name *calling, struct nmb_name *called)
1374 {
1375 char *p;
1376 int len = 4;
1377
1378 memcpy(&(cli->calling), calling, sizeof(*calling));
1379 memcpy(&(cli->called ), called , sizeof(*called ));
1380
1381 /* put in the destination name */
1382 p = cli->outbuf+len;
1383 name_mangle(cli->called .name, p, cli->called .name_type);
1384 len += name_len(p);
1385
1386 /* and my name */
1387 p = cli->outbuf+len;
1388 name_mangle(cli->calling.name, p, cli->calling.name_type);
1389 len += name_len(p);
1390
1391 /* 445 doesn't have session request */
1392 if (cli->port == 445)
1393 return True;
1394
1395 /* send a session request (RFC 1002) */
1396 /* setup the packet length
1397 * Remove four bytes from the length count, since the length
1398 * field in the NBT Session Service header counts the number
1399 * of bytes which follow. The cli_send_smb() function knows
1400 * about this and accounts for those four bytes.
1401 * CRH.
1402 */
1403 len -= 4;
1404 _smb_setlen(cli->outbuf,len);
1405 SCVAL(cli->outbuf,0,0x81);
1406
1407 cli_send_smb(cli);
1408 DEBUG(5,("Sent session request\n"));
1409
1410 if (!cli_receive_smb(cli))
1411 return False;
1412
1413 if (CVAL(cli->inbuf,0) == 0x84) {
1414 /* C. Hoch 9/14/95 Start */
1415 /* For information, here is the response structure.
1416 * We do the byte-twiddling to for portability.
1417 struct RetargetResponse{
1418 unsigned char type;
1419 unsigned char flags;
1420 int16 length;
1421 int32 ip_addr;
1422 int16 port;
1423 };
1424 */
1425 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1426 struct in_addr dest_ip;
1427
1428 /* SESSION RETARGET */
1429 putip((char *)&dest_ip,cli->inbuf+4);
1430 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
1431
1432 cli->fd = open_socket_out(SOCK_STREAM,
1433 &cli->dest_ss,
1434 port,
1435 LONG_CONNECT_TIMEOUT);
1436 if (cli->fd == -1)
1437 return False;
1438
1439 DEBUG(3,("Retargeted\n"));
1440
1441 set_socket_options(cli->fd, lp_socket_options());
1442
1443 /* Try again */
1444 {
1445 static int depth;
1446 bool ret;
1447 if (depth > 4) {
1448 DEBUG(0,("Retarget recursion - failing\n"));
1449 return False;
1450 }
1451 depth++;
1452 ret = cli_session_request(cli, calling, called);
1453 depth--;
1454 return ret;
1455 }
1456 } /* C. Hoch 9/14/95 End */
1457
1458 if (CVAL(cli->inbuf,0) != 0x82) {
1459 /* This is the wrong place to put the error... JRA. */
1460 cli->rap_error = CVAL(cli->inbuf,4);
1461 return False;
1462 }
1463 return(True);
1464 }
1465
1466 /****************************************************************************
1467 Open the client sockets.
1468 ****************************************************************************/
1469
1470 NTSTATUS cli_connect(struct cli_state *cli,
1471 const char *host,
1472 struct sockaddr_storage *dest_ss)
1473
1474 {
1475 int name_type = 0x20;
1476 TALLOC_CTX *frame = talloc_stackframe();
1477 unsigned int num_addrs = 0;
1478 unsigned int i = 0;
1479 struct sockaddr_storage *ss_arr = NULL;
1480 char *p = NULL;
1481
1482 /* reasonable default hostname */
1483 if (!host) {
1484 host = star_smbserver_name;
1485 }
1486
1487 fstrcpy(cli->desthost, host);
1488
1489 /* allow hostnames of the form NAME#xx and do a netbios lookup */
1490 if ((p = strchr(cli->desthost, '#'))) {
1491 name_type = strtol(p+1, NULL, 16);
1492 *p = 0;
1493 }
1494
1495 if (!dest_ss || is_zero_addr(dest_ss)) {
1496 NTSTATUS status =resolve_name_list(frame,
1497 cli->desthost,
1498 name_type,
1499 &ss_arr,
1500 &num_addrs);
1501 if (!NT_STATUS_IS_OK(status)) {
1502 TALLOC_FREE(frame);
1503 return NT_STATUS_BAD_NETWORK_NAME;
1504 }
1505 } else {
1506 num_addrs = 1;
1507 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
1508 if (!ss_arr) {
1509 TALLOC_FREE(frame);
1510 return NT_STATUS_NO_MEMORY;
1511 }
1512 *ss_arr = *dest_ss;
1513 }
1514
1515 for (i = 0; i < num_addrs; i++) {
1516 cli->dest_ss = ss_arr[i];
1517 if (getenv("LIBSMB_PROG")) {
1518 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1519 } else {
1520 /* try 445 first, then 139 */
1521 uint16_t port = cli->port?cli->port:445;
1522 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1523 port, cli->timeout);
1524 if (cli->fd == -1 && cli->port == 0) {
1525 port = 139;
1526 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1527 port, cli->timeout);
1528 }
1529 if (cli->fd != -1) {
1530 cli->port = port;
1531 }
1532 }
1533 if (cli->fd == -1) {
1534 char addr[INET6_ADDRSTRLEN];
1535 print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
1536 DEBUG(2,("Error connecting to %s (%s)\n",
1537 dest_ss?addr:host,strerror(errno)));
1538 } else {
1539 /* Exit from loop on first connection. */
1540 break;
1541 }
1542 }
1543
1544 if (cli->fd == -1) {
1545 TALLOC_FREE(frame);
1546 return map_nt_error_from_unix(errno);
1547 }
1548
1549 if (dest_ss) {
1550 *dest_ss = cli->dest_ss;
1551 }
1552
1553 set_socket_options(cli->fd, lp_socket_options());
1554
1555 TALLOC_FREE(frame);
1556 return NT_STATUS_OK;
1557 }
1558
1559 /**
1560 establishes a connection to after the negprot.
1561 @param output_cli A fully initialised cli structure, non-null only on success
1562 @param dest_host The netbios name of the remote host
1563 @param dest_ss (optional) The the destination IP, NULL for name based lookup
1564 @param port (optional) The destination port (0 for default)
1565 @param retry bool. Did this connection fail with a retryable error ?
1566
1567 */
1568 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1569 const char *my_name,
1570 const char *dest_host,
1571 struct sockaddr_storage *dest_ss, int port,
1572 int signing_state, int flags,
1573 bool *retry)
1574 {
1575 NTSTATUS nt_status;
1576 struct nmb_name calling;
1577 struct nmb_name called;
1578 struct cli_state *cli;
1579 struct sockaddr_storage ss;
1580
1581 if (retry)
1582 *retry = False;
1583
1584 if (!my_name)
1585 my_name = global_myname();
1586
1587 if (!(cli = cli_initialise())) {
1588 return NT_STATUS_NO_MEMORY;
1589 }
1590
1591 make_nmb_name(&calling, my_name, 0x0);
1592 make_nmb_name(&called , dest_host, 0x20);
1593
1594 if (cli_set_port(cli, port) != port) {
1595 cli_shutdown(cli);
1596 return NT_STATUS_UNSUCCESSFUL;
1597 }
1598
1599 cli_set_timeout(cli, 10000); /* 10 seconds. */
1600
1601 if (dest_ss) {
1602 ss = *dest_ss;
1603 } else {
1604 zero_addr(&ss);
1605 }
1606
1607 again:
1608
1609 DEBUG(3,("Connecting to host=%s\n", dest_host));
1610
1611 nt_status = cli_connect(cli, dest_host, &ss);
1612 if (!NT_STATUS_IS_OK(nt_status)) {
1613 char addr[INET6_ADDRSTRLEN];
1614 print_sockaddr(addr, sizeof(addr), &ss);
1615 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1616 nmb_namestr(&called), addr, nt_errstr(nt_status) ));
1617 cli_shutdown(cli);
1618 return nt_status;
1619 }
1620
1621 if (retry)
1622 *retry = True;
1623
1624 if (!cli_session_request(cli, &calling, &called)) {
1625 char *p;
1626 DEBUG(1,("session request to %s failed (%s)\n",
1627 called.name, cli_errstr(cli)));
1628 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1629 *p = 0;
1630 goto again;
1631 }
1632 if (strcmp(called.name, star_smbserver_name)) {
1633 make_nmb_name(&called , star_smbserver_name, 0x20);
1634 goto again;
1635 }
1636 return NT_STATUS_BAD_NETWORK_NAME;
1637 }
1638
1639 cli_setup_signing_state(cli, signing_state);
1640
1641 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1642 cli->use_spnego = False;
1643 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1644 cli->use_kerberos = True;
1645
1646 if (!cli_negprot(cli)) {
1647 DEBUG(1,("failed negprot\n"));
1648 nt_status = cli_nt_error(cli);
1649 if (NT_STATUS_IS_OK(nt_status)) {
1650 nt_status = NT_STATUS_UNSUCCESSFUL;
1651 }
1652 cli_shutdown(cli);
1653 return nt_status;
1654 }
1655
1656 *output_cli = cli;
1657 return NT_STATUS_OK;
1658 }
1659
1660
1661 /**
1662 establishes a connection right up to doing tconX, password specified.
1663 @param output_cli A fully initialised cli structure, non-null only on success
1664 @param dest_host The netbios name of the remote host
1665 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1666 @param port (optional) The destination port (0 for default)
1667 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1668 @param service_type The 'type' of serivice.
1669 @param user Username, unix string
1670 @param domain User's domain
1671 @param password User's password, unencrypted unix string.
1672 @param retry bool. Did this connection fail with a retryable error ?
1673 */
1674
1675 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1676 const char *my_name,
1677 const char *dest_host,
1678 struct sockaddr_storage *dest_ss, int port,
1679 const char *service, const char *service_type,
1680 const char *user, const char *domain,
1681 const char *password, int flags,
1682 int signing_state,
1683 bool *retry)
1684 {
1685 NTSTATUS nt_status;
1686 struct cli_state *cli = NULL;
1687 int pw_len = password ? strlen(password)+1 : 0;
1688
1689 *output_cli = NULL;
1690
1691 if (password == NULL) {
1692 password = "";
1693 }
1694
1695 nt_status = cli_start_connection(&cli, my_name, dest_host,
1696 dest_ss, port, signing_state,
1697 flags, retry);
1698
1699 if (!NT_STATUS_IS_OK(nt_status)) {
1700 return nt_status;
1701 }
1702
1703 nt_status = cli_session_setup(cli, user, password, pw_len, password,
1704 pw_len, domain);
1705 if (!NT_STATUS_IS_OK(nt_status)) {
1706
1707 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1708 DEBUG(1,("failed session setup with %s\n",
1709 nt_errstr(nt_status)));
1710 cli_shutdown(cli);
1711 return nt_status;
1712 }
1713
1714 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1715 if (!NT_STATUS_IS_OK(nt_status)) {
1716 DEBUG(1,("anonymous failed session setup with %s\n",
1717 nt_errstr(nt_status)));
1718 cli_shutdown(cli);
1719 return nt_status;
1720 }
1721 }
1722
1723 if (service) {
1724 if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1725 nt_status = cli_nt_error(cli);
1726 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1727 cli_shutdown(cli);
1728 if (NT_STATUS_IS_OK(nt_status)) {
1729 nt_status = NT_STATUS_UNSUCCESSFUL;
1730 }
1731 return nt_status;
1732 }
1733 }
1734
1735 cli_init_creds(cli, user, domain, password);
1736
1737 *output_cli = cli;
1738 return NT_STATUS_OK;
1739 }
1740
1741 /****************************************************************************
1742 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1743 ****************************************************************************/
1744
1745 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
1746 struct sockaddr_storage *pdest_ss)
1747 {
1748 struct nmb_name calling, called;
1749
1750 make_nmb_name(&calling, srchost, 0x0);
1751
1752 /*
1753 * If the called name is an IP address
1754 * then use *SMBSERVER immediately.
1755 */
1756
1757 if(is_ipaddress(desthost)) {
1758 make_nmb_name(&called, star_smbserver_name, 0x20);
1759 } else {
1760 make_nmb_name(&called, desthost, 0x20);
1761 }
1762
1763 if (!cli_session_request(*ppcli, &calling, &called)) {
1764 NTSTATUS status;
1765 struct nmb_name smbservername;
1766
1767 make_nmb_name(&smbservername, star_smbserver_name, 0x20);
1768
1769 /*
1770 * If the name wasn't *SMBSERVER then
1771 * try with *SMBSERVER if the first name fails.
1772 */
1773
1774 if (nmb_name_equal(&called, &smbservername)) {
1775
1776 /*
1777 * The name used was *SMBSERVER, don't bother with another name.
1778 */
1779
1780 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1781 with error %s.\n", desthost, cli_errstr(*ppcli) ));
1782 return False;
1783 }
1784
1785 /* Try again... */
1786 cli_shutdown(*ppcli);
1787
1788 *ppcli = cli_initialise();
1789 if (!*ppcli) {
1790 /* Out of memory... */
1791 return False;
1792 }
1793
1794 status = cli_connect(*ppcli, desthost, pdest_ss);
1795 if (!NT_STATUS_IS_OK(status) ||
1796 !cli_session_request(*ppcli, &calling, &smbservername)) {
1797 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1798 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
1799 return False;
1800 }
1801 }
1802
1803 return True;
1804 }
1805
1806 /****************************************************************************
1807 Send an old style tcon.
1808 ****************************************************************************/
1809 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1810 const char *service, const char *pass, const char *dev,
1811 uint16 *max_xmit, uint16 *tid)
1812 {
1813 char *p;
1814
1815 if (!lp_client_plaintext_auth() && (*pass)) {
1816 DEBUG(1, ("Server requested plaintext password but 'client "
1817 "plaintext auth' is disabled\n"));
1818 return NT_STATUS_ACCESS_DENIED;
1819 }
1820
1821 memset(cli->outbuf,'\0',smb_size);
1822 memset(cli->inbuf,'\0',smb_size);
1823
1824 cli_set_message(cli->outbuf, 0, 0, True);
1825 SCVAL(cli->outbuf,smb_com,SMBtcon);
1826 cli_setup_packet(cli);
1827
1828 p = smb_buf(cli->outbuf);
1829 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1830 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1831 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1832
1833 cli_setup_bcc(cli, p);
1834
1835 cli_send_smb(cli);
1836 if (!cli_receive_smb(cli)) {
1837 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1838 }
1839
1840 if (cli_is_error(cli)) {
1841 return cli_nt_error(cli);
1842 }
1843
1844 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1845 *tid = SVAL(cli->inbuf, smb_vwv1);
1846
1847 return NT_STATUS_OK;
1848 }
1849
1850 /* Return a cli_state pointing at the IPC$ share for the given server */
1851
1852 struct cli_state *get_ipc_connect(char *server,
1853 struct sockaddr_storage *server_ss,
1854 const struct user_auth_info *user_info)
1855 {
1856 struct cli_state *cli;
1857 NTSTATUS nt_status;
1858
1859 nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
1860 user_info->username ? user_info->username : "",
1861 lp_workgroup(),
1862 user_info->password ? user_info->password : "",
1863 CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK, Undefined, NULL);
1864
1865 if (NT_STATUS_IS_OK(nt_status)) {
1866 return cli;
1867 } else if (is_ipaddress(server)) {
1868 /* windows 9* needs a correct NMB name for connections */
1869 fstring remote_name;
1870
1871 if (name_status_find("*", 0, 0, server_ss, remote_name)) {
1872 cli = get_ipc_connect(remote_name, server_ss, user_info);
1873 if (cli)
1874 return cli;
1875 }
1876 }
1877 return NULL;
1878 }
1879
1880 /*
1881 * Given the IP address of a master browser on the network, return its
1882 * workgroup and connect to it.
1883 *
1884 * This function is provided to allow additional processing beyond what
1885 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1886 * browsers and obtain each master browsers' list of domains (in case the
1887 * first master browser is recently on the network and has not yet
1888 * synchronized with other master browsers and therefore does not yet have the
1889 * entire network browse list)
1890 */
1891
1892 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
1893 struct ip_service *mb_ip,
1894 const struct user_auth_info *user_info,
1895 char **pp_workgroup_out)
1896 {
1897 char addr[INET6_ADDRSTRLEN];
1898 fstring name;
1899 struct cli_state *cli;
1900 struct sockaddr_storage server_ss;
1901
1902 *pp_workgroup_out = NULL;
1903
1904 print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
1905 DEBUG(99, ("Looking up name of master browser %s\n",
1906 addr));
1907
1908 /*
1909 * Do a name status query to find out the name of the master browser.
1910 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1911 * master browser will not respond to a wildcard query (or, at least,
1912 * an NT4 server acting as the domain master browser will not).
1913 *
1914 * We might be able to use ONLY the query on MSBROWSE, but that's not
1915 * yet been tested with all Windows versions, so until it is, leave
1916 * the original wildcard query as the first choice and fall back to
1917 * MSBROWSE if the wildcard query fails.
1918 */
1919 if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
1920 !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
1921
1922 DEBUG(99, ("Could not retrieve name status for %s\n",
1923 addr));
1924 return NULL;
1925 }
1926
1927 if (!find_master_ip(name, &server_ss)) {
1928 DEBUG(99, ("Could not find master ip for %s\n", name));
1929 return NULL;
1930 }
1931
1932 *pp_workgroup_out = talloc_strdup(ctx, name);
1933
1934 DEBUG(4, ("found master browser %s, %s\n", name, addr));
1935
1936 print_sockaddr(addr, sizeof(addr), &server_ss);
1937 cli = get_ipc_connect(addr, &server_ss, user_info);
1938
1939 return cli;
1940 }
1941
1942 /*
1943 * Return the IP address and workgroup of a master browser on the network, and
1944 * connect to it.
1945 */
1946
1947 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
1948 const struct user_auth_info *user_info,
1949 char **pp_workgroup_out)
1950 {
1951 struct ip_service *ip_list;
1952 struct cli_state *cli;
1953 int i, count;
1954
1955 *pp_workgroup_out = NULL;
1956
1957 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1958
1959 /* Go looking for workgroups by broadcasting on the local network */
1960
1961 if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
1962 &count))) {
1963 DEBUG(99, ("No master browsers responded\n"));
1964 return False;
1965 }
1966
1967 for (i = 0; i < count; i++) {
1968 char addr[INET6_ADDRSTRLEN];
1969 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
1970 DEBUG(99, ("Found master browser %s\n", addr));
1971
1972 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
1973 user_info, pp_workgroup_out);
1974 if (cli)
1975 return(cli);
1976 }
1977
1978 return NULL;
1979 }
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