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Use the Samba Variant of the DocBook DTD rather then
[Samba.git] / source / libsmb / cliconnect.c
blob7d3d246da507dbce25fada49e21438d1d2ab1977
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 /* For ucs2 passwords clistr_push calls ucs2_align, which causes
252 * the space taken by the unicode password to be one byte too
253 * long (as we're on an odd byte boundary here). Reduce the
254 * count by 1 to cope with this. Fixes smbclient against NetApp
255 * servers which can't cope. Fix from
256 * bryan.kolodziej@allenlund.com in bug #3840.
257 */
258 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
259 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf))-1);
260 }
261
262 p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
263 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
264 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
265 p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
266 cli_setup_bcc(cli, p);
267
268 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
269 return cli_nt_error(cli);
270 }
271
272 show_msg(cli->inbuf);
273
274 if (cli_is_error(cli)) {
275 return cli_nt_error(cli);
276 }
277
278 cli->vuid = SVAL(cli->inbuf,smb_uid);
279 p = smb_buf(cli->inbuf);
280 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
281 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
282 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
283 fstrcpy(cli->user_name, user);
284
285 if (strstr(cli->server_type, "Samba")) {
286 cli->is_samba = True;
287 }
288
289 return NT_STATUS_OK;
290 }
291
292 /****************************************************************************
293 do a NT1 NTLM/LM encrypted session setup - for when extended security
294 is not negotiated.
295 @param cli client state to create do session setup on
296 @param user username
297 @param pass *either* cleartext password (passlen !=24) or LM response.
298 @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
299 @param workgroup The user's domain.
300 ****************************************************************************/
301
302 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
303 const char *pass, size_t passlen,
304 const char *ntpass, size_t ntpasslen,
305 const char *workgroup)
306 {
307 uint32 capabilities = cli_session_setup_capabilities(cli);
308 DATA_BLOB lm_response = data_blob_null;
309 DATA_BLOB nt_response = data_blob_null;
310 DATA_BLOB session_key = data_blob_null;
311 NTSTATUS result;
312 char *p;
313
314 if (passlen == 0) {
315 /* do nothing - guest login */
316 } else if (passlen != 24) {
317 if (lp_client_ntlmv2_auth()) {
318 DATA_BLOB server_chal;
319 DATA_BLOB names_blob;
320 server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
321
322 /* note that the 'workgroup' here is a best guess - we don't know
323 the server's domain at this point. The 'server name' is also
324 dodgy...
325 */
326 names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
327
328 if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
329 &names_blob,
330 &lm_response, &nt_response, &session_key)) {
331 data_blob_free(&names_blob);
332 data_blob_free(&server_chal);
333 return NT_STATUS_ACCESS_DENIED;
334 }
335 data_blob_free(&names_blob);
336 data_blob_free(&server_chal);
337
338 } else {
339 uchar nt_hash[16];
340 E_md4hash(pass, nt_hash);
341
342 #ifdef LANMAN_ONLY
343 nt_response = data_blob_null;
344 #else
345 nt_response = data_blob(NULL, 24);
346 SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
347 #endif
348 /* non encrypted password supplied. Ignore ntpass. */
349 if (lp_client_lanman_auth()) {
350 lm_response = data_blob(NULL, 24);
351 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
352 /* Oops, the LM response is invalid, just put
353 the NT response there instead */
354 data_blob_free(&lm_response);
355 lm_response = data_blob(nt_response.data, nt_response.length);
356 }
357 } else {
358 /* LM disabled, place NT# in LM field instead */
359 lm_response = data_blob(nt_response.data, nt_response.length);
360 }
361
362 session_key = data_blob(NULL, 16);
363 #ifdef LANMAN_ONLY
364 E_deshash(pass, session_key.data);
365 memset(&session_key.data[8], '\0', 8);
366 #else
367 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
368 #endif
369 }
370 #ifdef LANMAN_ONLY
371 cli_simple_set_signing(cli, session_key, lm_response);
372 #else
373 cli_simple_set_signing(cli, session_key, nt_response);
374 #endif
375 } else {
376 /* pre-encrypted password supplied. Only used for
377 security=server, can't do
378 signing because we don't have original key */
379
380 lm_response = data_blob(pass, passlen);
381 nt_response = data_blob(ntpass, ntpasslen);
382 }
383
384 /* send a session setup command */
385 memset(cli->outbuf,'\0',smb_size);
386
387 cli_set_message(cli->outbuf,13,0,True);
388 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
389 cli_setup_packet(cli);
390
391 SCVAL(cli->outbuf,smb_vwv0,0xFF);
392 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
393 SSVAL(cli->outbuf,smb_vwv3,2);
394 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
395 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
396 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
397 SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
398 SIVAL(cli->outbuf,smb_vwv11,capabilities);
399 p = smb_buf(cli->outbuf);
400 if (lm_response.length) {
401 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
402 }
403 if (nt_response.length) {
404 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
405 }
406 p += clistr_push(cli, p, user, -1, STR_TERMINATE);
407
408 /* Upper case here might help some NTLMv2 implementations */
409 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
410 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
411 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
412 cli_setup_bcc(cli, p);
413
414 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
415 result = cli_nt_error(cli);
416 goto end;
417 }
418
419 /* show_msg(cli->inbuf); */
420
421 if (cli_is_error(cli)) {
422 result = cli_nt_error(cli);
423 goto end;
424 }
425
426 /* use the returned vuid from now on */
427 cli->vuid = SVAL(cli->inbuf,smb_uid);
428
429 p = smb_buf(cli->inbuf);
430 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
431 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
432 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
433
434 if (strstr(cli->server_type, "Samba")) {
435 cli->is_samba = True;
436 }
437
438 fstrcpy(cli->user_name, user);
439
440 if (session_key.data) {
441 /* Have plaintext orginal */
442 cli_set_session_key(cli, session_key);
443 }
444
445 result = NT_STATUS_OK;
446 end:
447 data_blob_free(&lm_response);
448 data_blob_free(&nt_response);
449 data_blob_free(&session_key);
450 return result;
451 }
452
453 /****************************************************************************
454 Send a extended security session setup blob
455 ****************************************************************************/
456
457 static bool cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
458 {
459 uint32 capabilities = cli_session_setup_capabilities(cli);
460 char *p;
461
462 capabilities |= CAP_EXTENDED_SECURITY;
463
464 /* send a session setup command */
465 memset(cli->outbuf,'\0',smb_size);
466
467 cli_set_message(cli->outbuf,12,0,True);
468 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
469
470 cli_setup_packet(cli);
471
472 SCVAL(cli->outbuf,smb_vwv0,0xFF);
473 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
474 SSVAL(cli->outbuf,smb_vwv3,2);
475 SSVAL(cli->outbuf,smb_vwv4,1);
476 SIVAL(cli->outbuf,smb_vwv5,0);
477 SSVAL(cli->outbuf,smb_vwv7,blob.length);
478 SIVAL(cli->outbuf,smb_vwv10,capabilities);
479 p = smb_buf(cli->outbuf);
480 memcpy(p, blob.data, blob.length);
481 p += blob.length;
482 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
483 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
484 cli_setup_bcc(cli, p);
485 return cli_send_smb(cli);
486 }
487
488 /****************************************************************************
489 Send a extended security session setup blob, returning a reply blob.
490 ****************************************************************************/
491
492 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
493 {
494 DATA_BLOB blob2 = data_blob_null;
495 char *p;
496 size_t len;
497
498 if (!cli_receive_smb(cli))
499 return blob2;
500
501 show_msg(cli->inbuf);
502
503 if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
504 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
505 return blob2;
506 }
507
508 /* use the returned vuid from now on */
509 cli->vuid = SVAL(cli->inbuf,smb_uid);
510
511 p = smb_buf(cli->inbuf);
512
513 blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
514
515 p += blob2.length;
516 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
517
518 /* w2k with kerberos doesn't properly null terminate this field */
519 len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
520 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
521
522 return blob2;
523 }
524
525 #ifdef HAVE_KRB5
526 /****************************************************************************
527 Send a extended security session setup blob, returning a reply blob.
528 ****************************************************************************/
529
530 /* The following is calculated from :
531 * (smb_size-4) = 35
532 * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
533 * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
534 * end of packet.
535 */
536
537 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
538
539 static bool cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob, DATA_BLOB session_key_krb5)
540 {
541 int32 remaining = blob.length;
542 int32 cur = 0;
543 DATA_BLOB send_blob = data_blob_null;
544 int32 max_blob_size = 0;
545 DATA_BLOB receive_blob = data_blob_null;
546
547 if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
548 DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
549 "(was %u, need minimum %u)\n",
550 (unsigned int)cli->max_xmit,
551 BASE_SESSSETUP_BLOB_PACKET_SIZE));
552 cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
553 return False;
554 }
555
556 max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
557
558 while ( remaining > 0) {
559 if (remaining >= max_blob_size) {
560 send_blob.length = max_blob_size;
561 remaining -= max_blob_size;
562 } else {
563 DATA_BLOB null_blob = data_blob_null;
564
565 send_blob.length = remaining;
566 remaining = 0;
567
568 /* This is the last packet in the sequence - turn signing on. */
569 cli_simple_set_signing(cli, session_key_krb5, null_blob);
570 }
571
572 send_blob.data = &blob.data[cur];
573 cur += send_blob.length;
574
575 DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
576 (unsigned int)remaining,
577 (unsigned int)send_blob.length,
578 (unsigned int)cur ));
579
580 if (!cli_session_setup_blob_send(cli, send_blob)) {
581 DEBUG(0, ("cli_session_setup_blob: send failed\n"));
582 return False;
583 }
584
585 receive_blob = cli_session_setup_blob_receive(cli);
586 data_blob_free(&receive_blob);
587
588 if (cli_is_error(cli) &&
589 !NT_STATUS_EQUAL( cli_get_nt_error(cli),
590 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
591 DEBUG(0, ("cli_session_setup_blob: receive failed "
592 "(%s)\n", nt_errstr(cli_get_nt_error(cli))));
593 cli->vuid = 0;
594 return False;
595 }
596 }
597
598 return True;
599 }
600
601 /****************************************************************************
602 Use in-memory credentials cache
603 ****************************************************************************/
604
605 static void use_in_memory_ccache(void) {
606 setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
607 }
608
609 /****************************************************************************
610 Do a spnego/kerberos encrypted session setup.
611 ****************************************************************************/
612
613 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
614 {
615 DATA_BLOB negTokenTarg;
616 DATA_BLOB session_key_krb5;
617 int rc;
618
619 DEBUG(2,("Doing kerberos session setup\n"));
620
621 /* generate the encapsulated kerberos5 ticket */
622 rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
623
624 if (rc) {
625 DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
626 error_message(rc)));
627 return ADS_ERROR_KRB5(rc);
628 }
629
630 #if 0
631 file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
632 #endif
633
634 if (!cli_session_setup_blob(cli, negTokenTarg, session_key_krb5)) {
635 data_blob_free(&negTokenTarg);
636 data_blob_free(&session_key_krb5);
637 return ADS_ERROR_NT(cli_nt_error(cli));
638 }
639
640 cli_set_session_key(cli, session_key_krb5);
641
642 data_blob_free(&negTokenTarg);
643 data_blob_free(&session_key_krb5);
644
645 if (cli_is_error(cli)) {
646 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
647 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
648 }
649 }
650 return ADS_ERROR_NT(cli_nt_error(cli));
651 }
652 #endif /* HAVE_KRB5 */
653
654
655 /****************************************************************************
656 Do a spnego/NTLMSSP encrypted session setup.
657 ****************************************************************************/
658
659 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
660 const char *pass, const char *domain)
661 {
662 struct ntlmssp_state *ntlmssp_state;
663 NTSTATUS nt_status;
664 int turn = 1;
665 DATA_BLOB msg1;
666 DATA_BLOB blob = data_blob_null;
667 DATA_BLOB blob_in = data_blob_null;
668 DATA_BLOB blob_out = data_blob_null;
669
670 cli_temp_set_signing(cli);
671
672 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
673 return nt_status;
674 }
675 ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
676
677 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
678 return nt_status;
679 }
680 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
681 return nt_status;
682 }
683 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
684 return nt_status;
685 }
686
687 do {
688 nt_status = ntlmssp_update(ntlmssp_state,
689 blob_in, &blob_out);
690 data_blob_free(&blob_in);
691 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
692 if (turn == 1) {
693 /* and wrap it in a SPNEGO wrapper */
694 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
695 } else {
696 /* wrap it in SPNEGO */
697 msg1 = spnego_gen_auth(blob_out);
698 }
699
700 /* now send that blob on its way */
701 if (!cli_session_setup_blob_send(cli, msg1)) {
702 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
703 nt_status = NT_STATUS_UNSUCCESSFUL;
704 } else {
705 blob = cli_session_setup_blob_receive(cli);
706
707 nt_status = cli_nt_error(cli);
708 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
709 if (cli->smb_rw_error == SMB_READ_BAD_SIG) {
710 nt_status = NT_STATUS_ACCESS_DENIED;
711 } else {
712 nt_status = NT_STATUS_UNSUCCESSFUL;
713 }
714 }
715 }
716 data_blob_free(&msg1);
717 }
718
719 if (!blob.length) {
720 if (NT_STATUS_IS_OK(nt_status)) {
721 nt_status = NT_STATUS_UNSUCCESSFUL;
722 }
723 } else if ((turn == 1) &&
724 NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
725 DATA_BLOB tmp_blob = data_blob_null;
726 /* the server might give us back two challenges */
727 if (!spnego_parse_challenge(blob, &blob_in,
728 &tmp_blob)) {
729 DEBUG(3,("Failed to parse challenges\n"));
730 nt_status = NT_STATUS_INVALID_PARAMETER;
731 }
732 data_blob_free(&tmp_blob);
733 } else {
734 if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
735 &blob_in)) {
736 DEBUG(3,("Failed to parse auth response\n"));
737 if (NT_STATUS_IS_OK(nt_status)
738 || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
739 nt_status = NT_STATUS_INVALID_PARAMETER;
740 }
741 }
742 data_blob_free(&blob);
743 data_blob_free(&blob_out);
744 turn++;
745 } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
746
747 data_blob_free(&blob_in);
748
749 if (NT_STATUS_IS_OK(nt_status)) {
750
751 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
752 ntlmssp_state->session_key.length);
753 DATA_BLOB null_blob = data_blob_null;
754 bool res;
755
756 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
757 cli_set_session_key(cli, ntlmssp_state->session_key);
758
759 res = cli_simple_set_signing(cli, key, null_blob);
760
761 data_blob_free(&key);
762
763 if (res) {
764
765 /* 'resign' the last message, so we get the right sequence numbers
766 for checking the first reply from the server */
767 cli_calculate_sign_mac(cli, cli->outbuf);
768
769 if (!cli_check_sign_mac(cli, cli->inbuf)) {
770 nt_status = NT_STATUS_ACCESS_DENIED;
771 }
772 }
773 }
774
775 /* we have a reference conter on ntlmssp_state, if we are signing
776 then the state will be kept by the signing engine */
777
778 ntlmssp_end(&ntlmssp_state);
779
780 if (!NT_STATUS_IS_OK(nt_status)) {
781 cli->vuid = 0;
782 }
783 return nt_status;
784 }
785
786 /****************************************************************************
787 Do a spnego encrypted session setup.
788 ****************************************************************************/
789
790 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
791 const char *pass, const char *domain)
792 {
793 char *principal;
794 char *OIDs[ASN1_MAX_OIDS];
795 int i;
796 bool got_kerberos_mechanism = False;
797 DATA_BLOB blob;
798
799 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
800
801 /* the server might not even do spnego */
802 if (cli->secblob.length <= 16) {
803 DEBUG(3,("server didn't supply a full spnego negprot\n"));
804 goto ntlmssp;
805 }
806
807 #if 0
808 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
809 #endif
810
811 /* there is 16 bytes of GUID before the real spnego packet starts */
812 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
813
814 /* the server sent us the first part of the SPNEGO exchange in the negprot
815 reply */
816 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
817 data_blob_free(&blob);
818 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
819 }
820 data_blob_free(&blob);
821
822 /* make sure the server understands kerberos */
823 for (i=0;OIDs[i];i++) {
824 DEBUG(3,("got OID=%s\n", OIDs[i]));
825 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
826 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
827 got_kerberos_mechanism = True;
828 }
829 free(OIDs[i]);
830 }
831
832 DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
833
834 if (got_kerberos_mechanism && (principal == NULL)) {
835 /*
836 * It is WRONG to depend on the principal sent in the negprot
837 * reply, but right now we do it. So for safety (don't
838 * segfault later) disable Kerberos when no principal was
839 * sent. -- VL
840 */
841 DEBUG(1, ("Kerberos mech was offered, but no principal was "
842 "sent, disabling Kerberos\n"));
843 cli->use_kerberos = False;
844 }
845
846 fstrcpy(cli->user_name, user);
847
848 #ifdef HAVE_KRB5
849 /* If password is set we reauthenticate to kerberos server
850 * and do not store results */
851
852 if (got_kerberos_mechanism && cli->use_kerberos) {
853 ADS_STATUS rc;
854
855 if (pass && *pass) {
856 int ret;
857
858 use_in_memory_ccache();
859 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
860
861 if (ret){
862 SAFE_FREE(principal);
863 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
864 if (cli->fallback_after_kerberos)
865 goto ntlmssp;
866 return ADS_ERROR_KRB5(ret);
867 }
868 }
869
870 /* If we get a bad principal, try to guess it if
871 we have a valid host NetBIOS name.
872 */
873 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
874 SAFE_FREE(principal);
875 }
876
877 if (principal == NULL &&
878 !is_ipaddress(cli->desthost) &&
879 !strequal(star_smbserver_name,
880 cli->desthost)) {
881 char *realm = NULL;
882 char *machine = NULL;
883 char *host = NULL;
884 DEBUG(3,("cli_session_setup_spnego: got a "
885 "bad server principal, trying to guess ...\n"));
886
887 host = strchr_m(cli->desthost, '.');
888 if (host) {
889 machine = SMB_STRNDUP(cli->desthost,
890 host - cli->desthost);
891 } else {
892 machine = SMB_STRDUP(cli->desthost);
893 }
894 if (machine == NULL) {
895 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
896 }
897
898 realm = kerberos_get_default_realm_from_ccache();
899 if (realm && *realm) {
900 if (asprintf(&principal, "%s$@%s",
901 machine, realm) < 0) {
902 SAFE_FREE(machine);
903 SAFE_FREE(realm);
904 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
905 }
906 DEBUG(3,("cli_session_setup_spnego: guessed "
907 "server principal=%s\n",
908 principal ? principal : "<null>"));
909 }
910 SAFE_FREE(machine);
911 SAFE_FREE(realm);
912 }
913
914 if (principal) {
915 rc = cli_session_setup_kerberos(cli, principal, domain);
916 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
917 SAFE_FREE(principal);
918 return rc;
919 }
920 }
921 }
922 #endif
923
924 SAFE_FREE(principal);
925
926 ntlmssp:
927
928 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
929 }
930
931 /****************************************************************************
932 Send a session setup. The username and workgroup is in UNIX character
933 format and must be converted to DOS codepage format before sending. If the
934 password is in plaintext, the same should be done.
935 ****************************************************************************/
936
937 NTSTATUS cli_session_setup(struct cli_state *cli,
938 const char *user,
939 const char *pass, int passlen,
940 const char *ntpass, int ntpasslen,
941 const char *workgroup)
942 {
943 char *p;
944 fstring user2;
945
946 if (user) {
947 fstrcpy(user2, user);
948 } else {
949 user2[0] ='\0';
950 }
951
952 if (!workgroup) {
953 workgroup = "";
954 }
955
956 /* allow for workgroups as part of the username */
957 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
958 (p=strchr_m(user2,*lp_winbind_separator()))) {
959 *p = 0;
960 user = p+1;
961 workgroup = user2;
962 }
963
964 if (cli->protocol < PROTOCOL_LANMAN1) {
965 return NT_STATUS_OK;
966 }
967
968 /* now work out what sort of session setup we are going to
969 do. I have split this into separate functions to make the
970 flow a bit easier to understand (tridge) */
971
972 /* if its an older server then we have to use the older request format */
973
974 if (cli->protocol < PROTOCOL_NT1) {
975 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
976 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
977 " is disabled\n"));
978 return NT_STATUS_ACCESS_DENIED;
979 }
980
981 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
982 !lp_client_plaintext_auth() && (*pass)) {
983 DEBUG(1, ("Server requested plaintext password but "
984 "'client plaintext auth' is disabled\n"));
985 return NT_STATUS_ACCESS_DENIED;
986 }
987
988 return cli_session_setup_lanman2(cli, user, pass, passlen,
989 workgroup);
990 }
991
992 /* if no user is supplied then we have to do an anonymous connection.
993 passwords are ignored */
994
995 if (!user || !*user)
996 return cli_session_setup_guest(cli);
997
998 /* if the server is share level then send a plaintext null
999 password at this point. The password is sent in the tree
1000 connect */
1001
1002 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1003 return cli_session_setup_plaintext(cli, user, "", workgroup);
1004
1005 /* if the server doesn't support encryption then we have to use
1006 plaintext. The second password is ignored */
1007
1008 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1009 if (!lp_client_plaintext_auth() && (*pass)) {
1010 DEBUG(1, ("Server requested plaintext password but "
1011 "'client plaintext auth' is disabled\n"));
1012 return NT_STATUS_ACCESS_DENIED;
1013 }
1014 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1015 }
1016
1017 /* if the server supports extended security then use SPNEGO */
1018
1019 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1020 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
1021 if (!ADS_ERR_OK(status)) {
1022 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1023 return ads_ntstatus(status);
1024 }
1025 } else {
1026 NTSTATUS status;
1027
1028 /* otherwise do a NT1 style session setup */
1029 status = cli_session_setup_nt1(cli, user, pass, passlen,
1030 ntpass, ntpasslen, workgroup);
1031 if (!NT_STATUS_IS_OK(status)) {
1032 DEBUG(3,("cli_session_setup: NT1 session setup "
1033 "failed: %s\n", nt_errstr(status)));
1034 return status;
1035 }
1036 }
1037
1038 if (strstr(cli->server_type, "Samba")) {
1039 cli->is_samba = True;
1040 }
1041
1042 return NT_STATUS_OK;
1043 }
1044
1045 /****************************************************************************
1046 Send a uloggoff.
1047 *****************************************************************************/
1048
1049 bool cli_ulogoff(struct cli_state *cli)
1050 {
1051 memset(cli->outbuf,'\0',smb_size);
1052 cli_set_message(cli->outbuf,2,0,True);
1053 SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1054 cli_setup_packet(cli);
1055 SSVAL(cli->outbuf,smb_vwv0,0xFF);
1056 SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
1057
1058 cli_send_smb(cli);
1059 if (!cli_receive_smb(cli))
1060 return False;
1061
1062 if (cli_is_error(cli)) {
1063 return False;
1064 }
1065
1066 cli->cnum = -1;
1067 return True;
1068 }
1069
1070 /****************************************************************************
1071 Send a tconX.
1072 ****************************************************************************/
1073
1074 bool cli_send_tconX(struct cli_state *cli,
1075 const char *share, const char *dev, const char *pass, int passlen)
1076 {
1077 fstring fullshare, pword;
1078 char *p;
1079 memset(cli->outbuf,'\0',smb_size);
1080 memset(cli->inbuf,'\0',smb_size);
1081
1082 fstrcpy(cli->share, share);
1083
1084 /* in user level security don't send a password now */
1085 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1086 passlen = 1;
1087 pass = "";
1088 } else if (!pass) {
1089 DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1090 return False;
1091 }
1092
1093 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1094 *pass && passlen != 24) {
1095 if (!lp_client_lanman_auth()) {
1096 DEBUG(1, ("Server requested LANMAN password "
1097 "(share-level security) but "
1098 "'client lanman auth' is disabled\n"));
1099 return False;
1100 }
1101
1102 /*
1103 * Non-encrypted passwords - convert to DOS codepage before encryption.
1104 */
1105 passlen = 24;
1106 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1107 } else {
1108 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1109 if (!lp_client_plaintext_auth() && (*pass)) {
1110 DEBUG(1, ("Server requested plaintext "
1111 "password but 'client plaintext "
1112 "auth' is disabled\n"));
1113 return False;
1114 }
1115
1116 /*
1117 * Non-encrypted passwords - convert to DOS codepage before using.
1118 */
1119 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1120
1121 } else {
1122 if (passlen) {
1123 memcpy(pword, pass, passlen);
1124 }
1125 }
1126 }
1127
1128 slprintf(fullshare, sizeof(fullshare)-1,
1129 "\\\\%s\\%s", cli->desthost, share);
1130
1131 cli_set_message(cli->outbuf,4, 0, True);
1132 SCVAL(cli->outbuf,smb_com,SMBtconX);
1133 cli_setup_packet(cli);
1134
1135 SSVAL(cli->outbuf,smb_vwv0,0xFF);
1136 SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1137 SSVAL(cli->outbuf,smb_vwv3,passlen);
1138
1139 p = smb_buf(cli->outbuf);
1140 if (passlen) {
1141 memcpy(p,pword,passlen);
1142 }
1143 p += passlen;
1144 p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
1145 p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
1146
1147 cli_setup_bcc(cli, p);
1148
1149 cli_send_smb(cli);
1150 if (!cli_receive_smb(cli))
1151 return False;
1152
1153 if (cli_is_error(cli))
1154 return False;
1155
1156 clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
1157
1158 if (cli->protocol >= PROTOCOL_NT1 &&
1159 smb_buflen(cli->inbuf) == 3) {
1160 /* almost certainly win95 - enable bug fixes */
1161 cli->win95 = True;
1162 }
1163
1164 /* Make sure that we have the optional support 16-bit field. WCT > 2 */
1165 /* Avoids issues when connecting to Win9x boxes sharing files */
1166
1167 cli->dfsroot = False;
1168 if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1169 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1170
1171 cli->cnum = SVAL(cli->inbuf,smb_tid);
1172 return True;
1173 }
1174
1175 /****************************************************************************
1176 Send a tree disconnect.
1177 ****************************************************************************/
1178
1179 bool cli_tdis(struct cli_state *cli)
1180 {
1181 memset(cli->outbuf,'\0',smb_size);
1182 cli_set_message(cli->outbuf,0,0,True);
1183 SCVAL(cli->outbuf,smb_com,SMBtdis);
1184 SSVAL(cli->outbuf,smb_tid,cli->cnum);
1185 cli_setup_packet(cli);
1186
1187 cli_send_smb(cli);
1188 if (!cli_receive_smb(cli))
1189 return False;
1190
1191 if (cli_is_error(cli)) {
1192 return False;
1193 }
1194
1195 cli->cnum = -1;
1196 return True;
1197 }
1198
1199 /****************************************************************************
1200 Send a negprot command.
1201 ****************************************************************************/
1202
1203 void cli_negprot_send(struct cli_state *cli)
1204 {
1205 char *p;
1206 int numprots;
1207
1208 if (cli->protocol < PROTOCOL_NT1)
1209 cli->use_spnego = False;
1210
1211 memset(cli->outbuf,'\0',smb_size);
1212
1213 /* setup the protocol strings */
1214 cli_set_message(cli->outbuf,0,0,True);
1215
1216 p = smb_buf(cli->outbuf);
1217 for (numprots=0;
1218 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1219 numprots++) {
1220 *p++ = 2;
1221 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1222 }
1223
1224 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1225 cli_setup_bcc(cli, p);
1226 cli_setup_packet(cli);
1227
1228 SCVAL(smb_buf(cli->outbuf),0,2);
1229
1230 cli_send_smb(cli);
1231 }
1232
1233 /****************************************************************************
1234 Send a negprot command.
1235 ****************************************************************************/
1236
1237 bool cli_negprot(struct cli_state *cli)
1238 {
1239 char *p;
1240 int numprots;
1241 int plength;
1242
1243 if (cli->protocol < PROTOCOL_NT1)
1244 cli->use_spnego = False;
1245
1246 memset(cli->outbuf,'\0',smb_size);
1247
1248 /* setup the protocol strings */
1249 for (plength=0,numprots=0;
1250 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1251 numprots++)
1252 plength += strlen(prots[numprots].name)+2;
1253
1254 cli_set_message(cli->outbuf,0,plength,True);
1255
1256 p = smb_buf(cli->outbuf);
1257 for (numprots=0;
1258 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1259 numprots++) {
1260 *p++ = 2;
1261 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1262 }
1263
1264 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1265 cli_setup_packet(cli);
1266
1267 SCVAL(smb_buf(cli->outbuf),0,2);
1268
1269 cli_send_smb(cli);
1270 if (!cli_receive_smb(cli))
1271 return False;
1272
1273 show_msg(cli->inbuf);
1274
1275 if (cli_is_error(cli) ||
1276 ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1277 return(False);
1278 }
1279
1280 cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1281
1282 if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1283 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1284 return False;
1285 }
1286
1287 if (cli->protocol >= PROTOCOL_NT1) {
1288 struct timespec ts;
1289 /* NT protocol */
1290 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1291 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1292 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1293 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1294 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1295 cli->serverzone *= 60;
1296 /* this time arrives in real GMT */
1297 ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1298 cli->servertime = ts.tv_sec;
1299 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1300 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1301 if (cli->capabilities & CAP_RAW_MODE) {
1302 cli->readbraw_supported = True;
1303 cli->writebraw_supported = True;
1304 }
1305 /* work out if they sent us a workgroup */
1306 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1307 smb_buflen(cli->inbuf) > 8) {
1308 clistr_pull(cli, cli->server_domain,
1309 smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1310 smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1311 }
1312
1313 /*
1314 * As signing is slow we only turn it on if either the client or
1315 * the server require it. JRA.
1316 */
1317
1318 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1319 /* Fail if server says signing is mandatory and we don't want to support it. */
1320 if (!cli->sign_info.allow_smb_signing) {
1321 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1322 return False;
1323 }
1324 cli->sign_info.negotiated_smb_signing = True;
1325 cli->sign_info.mandatory_signing = True;
1326 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1327 /* Fail if client says signing is mandatory and the server doesn't support it. */
1328 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1329 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1330 return False;
1331 }
1332 cli->sign_info.negotiated_smb_signing = True;
1333 cli->sign_info.mandatory_signing = True;
1334 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1335 cli->sign_info.negotiated_smb_signing = True;
1336 }
1337
1338 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1339 SAFE_FREE(cli->outbuf);
1340 SAFE_FREE(cli->inbuf);
1341 cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1342 cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1343 cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1344 }
1345
1346 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1347 cli->use_spnego = False;
1348 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1349 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1350 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1351 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1352 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1353 cli->serverzone *= 60;
1354 /* this time is converted to GMT by make_unix_date */
1355 cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1356 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1357 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1358 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1359 } else {
1360 /* the old core protocol */
1361 cli->use_spnego = False;
1362 cli->sec_mode = 0;
1363 cli->serverzone = get_time_zone(time(NULL));
1364 }
1365
1366 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1367
1368 /* a way to force ascii SMB */
1369 if (getenv("CLI_FORCE_ASCII"))
1370 cli->capabilities &= ~CAP_UNICODE;
1371
1372 return True;
1373 }
1374
1375 /****************************************************************************
1376 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1377 ****************************************************************************/
1378
1379 bool cli_session_request(struct cli_state *cli,
1380 struct nmb_name *calling, struct nmb_name *called)
1381 {
1382 char *p;
1383 int len = 4;
1384
1385 memcpy(&(cli->calling), calling, sizeof(*calling));
1386 memcpy(&(cli->called ), called , sizeof(*called ));
1387
1388 /* put in the destination name */
1389 p = cli->outbuf+len;
1390 name_mangle(cli->called .name, p, cli->called .name_type);
1391 len += name_len(p);
1392
1393 /* and my name */
1394 p = cli->outbuf+len;
1395 name_mangle(cli->calling.name, p, cli->calling.name_type);
1396 len += name_len(p);
1397
1398 /* 445 doesn't have session request */
1399 if (cli->port == 445)
1400 return True;
1401
1402 /* send a session request (RFC 1002) */
1403 /* setup the packet length
1404 * Remove four bytes from the length count, since the length
1405 * field in the NBT Session Service header counts the number
1406 * of bytes which follow. The cli_send_smb() function knows
1407 * about this and accounts for those four bytes.
1408 * CRH.
1409 */
1410 len -= 4;
1411 _smb_setlen(cli->outbuf,len);
1412 SCVAL(cli->outbuf,0,0x81);
1413
1414 cli_send_smb(cli);
1415 DEBUG(5,("Sent session request\n"));
1416
1417 if (!cli_receive_smb(cli))
1418 return False;
1419
1420 if (CVAL(cli->inbuf,0) == 0x84) {
1421 /* C. Hoch 9/14/95 Start */
1422 /* For information, here is the response structure.
1423 * We do the byte-twiddling to for portability.
1424 struct RetargetResponse{
1425 unsigned char type;
1426 unsigned char flags;
1427 int16 length;
1428 int32 ip_addr;
1429 int16 port;
1430 };
1431 */
1432 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1433 struct in_addr dest_ip;
1434
1435 /* SESSION RETARGET */
1436 putip((char *)&dest_ip,cli->inbuf+4);
1437 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
1438
1439 cli->fd = open_socket_out(SOCK_STREAM,
1440 &cli->dest_ss,
1441 port,
1442 LONG_CONNECT_TIMEOUT);
1443 if (cli->fd == -1)
1444 return False;
1445
1446 DEBUG(3,("Retargeted\n"));
1447
1448 set_socket_options(cli->fd, lp_socket_options());
1449
1450 /* Try again */
1451 {
1452 static int depth;
1453 bool ret;
1454 if (depth > 4) {
1455 DEBUG(0,("Retarget recursion - failing\n"));
1456 return False;
1457 }
1458 depth++;
1459 ret = cli_session_request(cli, calling, called);
1460 depth--;
1461 return ret;
1462 }
1463 } /* C. Hoch 9/14/95 End */
1464
1465 if (CVAL(cli->inbuf,0) != 0x82) {
1466 /* This is the wrong place to put the error... JRA. */
1467 cli->rap_error = CVAL(cli->inbuf,4);
1468 return False;
1469 }
1470 return(True);
1471 }
1472
1473 /****************************************************************************
1474 Open the client sockets.
1475 ****************************************************************************/
1476
1477 NTSTATUS cli_connect(struct cli_state *cli,
1478 const char *host,
1479 struct sockaddr_storage *dest_ss)
1480
1481 {
1482 int name_type = 0x20;
1483 TALLOC_CTX *frame = talloc_stackframe();
1484 unsigned int num_addrs = 0;
1485 unsigned int i = 0;
1486 struct sockaddr_storage *ss_arr = NULL;
1487 char *p = NULL;
1488
1489 /* reasonable default hostname */
1490 if (!host) {
1491 host = star_smbserver_name;
1492 }
1493
1494 fstrcpy(cli->desthost, host);
1495
1496 /* allow hostnames of the form NAME#xx and do a netbios lookup */
1497 if ((p = strchr(cli->desthost, '#'))) {
1498 name_type = strtol(p+1, NULL, 16);
1499 *p = 0;
1500 }
1501
1502 if (!dest_ss || is_zero_addr(dest_ss)) {
1503 NTSTATUS status =resolve_name_list(frame,
1504 cli->desthost,
1505 name_type,
1506 &ss_arr,
1507 &num_addrs);
1508 if (!NT_STATUS_IS_OK(status)) {
1509 TALLOC_FREE(frame);
1510 return NT_STATUS_BAD_NETWORK_NAME;
1511 }
1512 } else {
1513 num_addrs = 1;
1514 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
1515 if (!ss_arr) {
1516 TALLOC_FREE(frame);
1517 return NT_STATUS_NO_MEMORY;
1518 }
1519 *ss_arr = *dest_ss;
1520 }
1521
1522 for (i = 0; i < num_addrs; i++) {
1523 cli->dest_ss = ss_arr[i];
1524 if (getenv("LIBSMB_PROG")) {
1525 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1526 } else {
1527 /* try 445 first, then 139 */
1528 uint16_t port = cli->port?cli->port:445;
1529 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1530 port, cli->timeout);
1531 if (cli->fd == -1 && cli->port == 0) {
1532 port = 139;
1533 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1534 port, cli->timeout);
1535 }
1536 if (cli->fd != -1) {
1537 cli->port = port;
1538 }
1539 }
1540 if (cli->fd == -1) {
1541 char addr[INET6_ADDRSTRLEN];
1542 print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
1543 DEBUG(2,("Error connecting to %s (%s)\n",
1544 dest_ss?addr:host,strerror(errno)));
1545 } else {
1546 /* Exit from loop on first connection. */
1547 break;
1548 }
1549 }
1550
1551 if (cli->fd == -1) {
1552 TALLOC_FREE(frame);
1553 return map_nt_error_from_unix(errno);
1554 }
1555
1556 if (dest_ss) {
1557 *dest_ss = cli->dest_ss;
1558 }
1559
1560 set_socket_options(cli->fd, lp_socket_options());
1561
1562 TALLOC_FREE(frame);
1563 return NT_STATUS_OK;
1564 }
1565
1566 /**
1567 establishes a connection to after the negprot.
1568 @param output_cli A fully initialised cli structure, non-null only on success
1569 @param dest_host The netbios name of the remote host
1570 @param dest_ss (optional) The the destination IP, NULL for name based lookup
1571 @param port (optional) The destination port (0 for default)
1572 @param retry bool. Did this connection fail with a retryable error ?
1573
1574 */
1575 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1576 const char *my_name,
1577 const char *dest_host,
1578 struct sockaddr_storage *dest_ss, int port,
1579 int signing_state, int flags,
1580 bool *retry)
1581 {
1582 NTSTATUS nt_status;
1583 struct nmb_name calling;
1584 struct nmb_name called;
1585 struct cli_state *cli;
1586 struct sockaddr_storage ss;
1587
1588 if (retry)
1589 *retry = False;
1590
1591 if (!my_name)
1592 my_name = global_myname();
1593
1594 if (!(cli = cli_initialise())) {
1595 return NT_STATUS_NO_MEMORY;
1596 }
1597
1598 make_nmb_name(&calling, my_name, 0x0);
1599 make_nmb_name(&called , dest_host, 0x20);
1600
1601 if (cli_set_port(cli, port) != port) {
1602 cli_shutdown(cli);
1603 return NT_STATUS_UNSUCCESSFUL;
1604 }
1605
1606 cli_set_timeout(cli, 10000); /* 10 seconds. */
1607
1608 if (dest_ss) {
1609 ss = *dest_ss;
1610 } else {
1611 zero_addr(&ss);
1612 }
1613
1614 again:
1615
1616 DEBUG(3,("Connecting to host=%s\n", dest_host));
1617
1618 nt_status = cli_connect(cli, dest_host, &ss);
1619 if (!NT_STATUS_IS_OK(nt_status)) {
1620 char addr[INET6_ADDRSTRLEN];
1621 print_sockaddr(addr, sizeof(addr), &ss);
1622 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1623 nmb_namestr(&called), addr, nt_errstr(nt_status) ));
1624 cli_shutdown(cli);
1625 return nt_status;
1626 }
1627
1628 if (retry)
1629 *retry = True;
1630
1631 if (!cli_session_request(cli, &calling, &called)) {
1632 char *p;
1633 DEBUG(1,("session request to %s failed (%s)\n",
1634 called.name, cli_errstr(cli)));
1635 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1636 *p = 0;
1637 goto again;
1638 }
1639 if (strcmp(called.name, star_smbserver_name)) {
1640 make_nmb_name(&called , star_smbserver_name, 0x20);
1641 goto again;
1642 }
1643 return NT_STATUS_BAD_NETWORK_NAME;
1644 }
1645
1646 cli_setup_signing_state(cli, signing_state);
1647
1648 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1649 cli->use_spnego = False;
1650 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1651 cli->use_kerberos = True;
1652
1653 if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
1654 cli->use_kerberos) {
1655 cli->fallback_after_kerberos = true;
1656 }
1657
1658 if (!cli_negprot(cli)) {
1659 DEBUG(1,("failed negprot\n"));
1660 nt_status = cli_nt_error(cli);
1661 if (NT_STATUS_IS_OK(nt_status)) {
1662 nt_status = NT_STATUS_UNSUCCESSFUL;
1663 }
1664 cli_shutdown(cli);
1665 return nt_status;
1666 }
1667
1668 *output_cli = cli;
1669 return NT_STATUS_OK;
1670 }
1671
1672
1673 /**
1674 establishes a connection right up to doing tconX, password specified.
1675 @param output_cli A fully initialised cli structure, non-null only on success
1676 @param dest_host The netbios name of the remote host
1677 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1678 @param port (optional) The destination port (0 for default)
1679 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1680 @param service_type The 'type' of serivice.
1681 @param user Username, unix string
1682 @param domain User's domain
1683 @param password User's password, unencrypted unix string.
1684 @param retry bool. Did this connection fail with a retryable error ?
1685 */
1686
1687 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1688 const char *my_name,
1689 const char *dest_host,
1690 struct sockaddr_storage *dest_ss, int port,
1691 const char *service, const char *service_type,
1692 const char *user, const char *domain,
1693 const char *password, int flags,
1694 int signing_state,
1695 bool *retry)
1696 {
1697 NTSTATUS nt_status;
1698 struct cli_state *cli = NULL;
1699 int pw_len = password ? strlen(password)+1 : 0;
1700
1701 *output_cli = NULL;
1702
1703 if (password == NULL) {
1704 password = "";
1705 }
1706
1707 nt_status = cli_start_connection(&cli, my_name, dest_host,
1708 dest_ss, port, signing_state,
1709 flags, retry);
1710
1711 if (!NT_STATUS_IS_OK(nt_status)) {
1712 return nt_status;
1713 }
1714
1715 nt_status = cli_session_setup(cli, user, password, pw_len, password,
1716 pw_len, domain);
1717 if (!NT_STATUS_IS_OK(nt_status)) {
1718
1719 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1720 DEBUG(1,("failed session setup with %s\n",
1721 nt_errstr(nt_status)));
1722 cli_shutdown(cli);
1723 return nt_status;
1724 }
1725
1726 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1727 if (!NT_STATUS_IS_OK(nt_status)) {
1728 DEBUG(1,("anonymous failed session setup with %s\n",
1729 nt_errstr(nt_status)));
1730 cli_shutdown(cli);
1731 return nt_status;
1732 }
1733 }
1734
1735 if (service) {
1736 if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1737 nt_status = cli_nt_error(cli);
1738 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1739 cli_shutdown(cli);
1740 if (NT_STATUS_IS_OK(nt_status)) {
1741 nt_status = NT_STATUS_UNSUCCESSFUL;
1742 }
1743 return nt_status;
1744 }
1745 }
1746
1747 cli_init_creds(cli, user, domain, password);
1748
1749 *output_cli = cli;
1750 return NT_STATUS_OK;
1751 }
1752
1753 /****************************************************************************
1754 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1755 ****************************************************************************/
1756
1757 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
1758 struct sockaddr_storage *pdest_ss)
1759 {
1760 struct nmb_name calling, called;
1761
1762 make_nmb_name(&calling, srchost, 0x0);
1763
1764 /*
1765 * If the called name is an IP address
1766 * then use *SMBSERVER immediately.
1767 */
1768
1769 if(is_ipaddress(desthost)) {
1770 make_nmb_name(&called, star_smbserver_name, 0x20);
1771 } else {
1772 make_nmb_name(&called, desthost, 0x20);
1773 }
1774
1775 if (!cli_session_request(*ppcli, &calling, &called)) {
1776 NTSTATUS status;
1777 struct nmb_name smbservername;
1778
1779 make_nmb_name(&smbservername, star_smbserver_name, 0x20);
1780
1781 /*
1782 * If the name wasn't *SMBSERVER then
1783 * try with *SMBSERVER if the first name fails.
1784 */
1785
1786 if (nmb_name_equal(&called, &smbservername)) {
1787
1788 /*
1789 * The name used was *SMBSERVER, don't bother with another name.
1790 */
1791
1792 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1793 with error %s.\n", desthost, cli_errstr(*ppcli) ));
1794 return False;
1795 }
1796
1797 /* Try again... */
1798 cli_shutdown(*ppcli);
1799
1800 *ppcli = cli_initialise();
1801 if (!*ppcli) {
1802 /* Out of memory... */
1803 return False;
1804 }
1805
1806 status = cli_connect(*ppcli, desthost, pdest_ss);
1807 if (!NT_STATUS_IS_OK(status) ||
1808 !cli_session_request(*ppcli, &calling, &smbservername)) {
1809 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1810 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
1811 return False;
1812 }
1813 }
1814
1815 return True;
1816 }
1817
1818 /****************************************************************************
1819 Send an old style tcon.
1820 ****************************************************************************/
1821 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1822 const char *service, const char *pass, const char *dev,
1823 uint16 *max_xmit, uint16 *tid)
1824 {
1825 char *p;
1826
1827 if (!lp_client_plaintext_auth() && (*pass)) {
1828 DEBUG(1, ("Server requested plaintext password but 'client "
1829 "plaintext auth' is disabled\n"));
1830 return NT_STATUS_ACCESS_DENIED;
1831 }
1832
1833 memset(cli->outbuf,'\0',smb_size);
1834 memset(cli->inbuf,'\0',smb_size);
1835
1836 cli_set_message(cli->outbuf, 0, 0, True);
1837 SCVAL(cli->outbuf,smb_com,SMBtcon);
1838 cli_setup_packet(cli);
1839
1840 p = smb_buf(cli->outbuf);
1841 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1842 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1843 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1844
1845 cli_setup_bcc(cli, p);
1846
1847 cli_send_smb(cli);
1848 if (!cli_receive_smb(cli)) {
1849 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1850 }
1851
1852 if (cli_is_error(cli)) {
1853 return cli_nt_error(cli);
1854 }
1855
1856 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1857 *tid = SVAL(cli->inbuf, smb_vwv1);
1858
1859 return NT_STATUS_OK;
1860 }
1861
1862 /* Return a cli_state pointing at the IPC$ share for the given server */
1863
1864 struct cli_state *get_ipc_connect(char *server,
1865 struct sockaddr_storage *server_ss,
1866 const struct user_auth_info *user_info)
1867 {
1868 struct cli_state *cli;
1869 NTSTATUS nt_status;
1870
1871 nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
1872 user_info->username ? user_info->username : "",
1873 lp_workgroup(),
1874 user_info->password ? user_info->password : "",
1875 CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK, Undefined, NULL);
1876
1877 if (NT_STATUS_IS_OK(nt_status)) {
1878 return cli;
1879 } else if (is_ipaddress(server)) {
1880 /* windows 9* needs a correct NMB name for connections */
1881 fstring remote_name;
1882
1883 if (name_status_find("*", 0, 0, server_ss, remote_name)) {
1884 cli = get_ipc_connect(remote_name, server_ss, user_info);
1885 if (cli)
1886 return cli;
1887 }
1888 }
1889 return NULL;
1890 }
1891
1892 /*
1893 * Given the IP address of a master browser on the network, return its
1894 * workgroup and connect to it.
1895 *
1896 * This function is provided to allow additional processing beyond what
1897 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1898 * browsers and obtain each master browsers' list of domains (in case the
1899 * first master browser is recently on the network and has not yet
1900 * synchronized with other master browsers and therefore does not yet have the
1901 * entire network browse list)
1902 */
1903
1904 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
1905 struct ip_service *mb_ip,
1906 const struct user_auth_info *user_info,
1907 char **pp_workgroup_out)
1908 {
1909 char addr[INET6_ADDRSTRLEN];
1910 fstring name;
1911 struct cli_state *cli;
1912 struct sockaddr_storage server_ss;
1913
1914 *pp_workgroup_out = NULL;
1915
1916 print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
1917 DEBUG(99, ("Looking up name of master browser %s\n",
1918 addr));
1919
1920 /*
1921 * Do a name status query to find out the name of the master browser.
1922 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1923 * master browser will not respond to a wildcard query (or, at least,
1924 * an NT4 server acting as the domain master browser will not).
1925 *
1926 * We might be able to use ONLY the query on MSBROWSE, but that's not
1927 * yet been tested with all Windows versions, so until it is, leave
1928 * the original wildcard query as the first choice and fall back to
1929 * MSBROWSE if the wildcard query fails.
1930 */
1931 if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
1932 !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
1933
1934 DEBUG(99, ("Could not retrieve name status for %s\n",
1935 addr));
1936 return NULL;
1937 }
1938
1939 if (!find_master_ip(name, &server_ss)) {
1940 DEBUG(99, ("Could not find master ip for %s\n", name));
1941 return NULL;
1942 }
1943
1944 *pp_workgroup_out = talloc_strdup(ctx, name);
1945
1946 DEBUG(4, ("found master browser %s, %s\n", name, addr));
1947
1948 print_sockaddr(addr, sizeof(addr), &server_ss);
1949 cli = get_ipc_connect(addr, &server_ss, user_info);
1950
1951 return cli;
1952 }
1953
1954 /*
1955 * Return the IP address and workgroup of a master browser on the network, and
1956 * connect to it.
1957 */
1958
1959 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
1960 const struct user_auth_info *user_info,
1961 char **pp_workgroup_out)
1962 {
1963 struct ip_service *ip_list;
1964 struct cli_state *cli;
1965 int i, count;
1966
1967 *pp_workgroup_out = NULL;
1968
1969 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1970
1971 /* Go looking for workgroups by broadcasting on the local network */
1972
1973 if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
1974 &count))) {
1975 DEBUG(99, ("No master browsers responded\n"));
1976 return False;
1977 }
1978
1979 for (i = 0; i < count; i++) {
1980 char addr[INET6_ADDRSTRLEN];
1981 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
1982 DEBUG(99, ("Found master browser %s\n", addr));
1983
1984 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
1985 user_info, pp_workgroup_out);
1986 if (cli)
1987 return(cli);
1988 }
1989
1990 return NULL;
1991 }
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