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r4348: syncing up for 3.0.11pre1
[Samba.git] / source / libsmb / cliconnect.c
blob29a9533bd24a305f90d36e027a9185d72a449111
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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #define NO_SYSLOG
23
24 #include "includes.h"
25
26
27 static const struct {
28 int prot;
29 const char *name;
30 } prots[] = {
31 {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
32 {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
33 {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
34 {PROTOCOL_LANMAN1,"LANMAN1.0"},
35 {PROTOCOL_LANMAN2,"LM1.2X002"},
36 {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
37 {PROTOCOL_LANMAN2,"Samba"},
38 {PROTOCOL_NT1,"NT LANMAN 1.0"},
39 {PROTOCOL_NT1,"NT LM 0.12"},
40 {-1,NULL}
41 };
42
43 /**
44 * Set the user session key for a connection
45 * @param cli The cli structure to add it too
46 * @param session_key The session key used. (A copy of this is taken for the cli struct)
47 *
48 */
49
50 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
51 {
52 cli->user_session_key = data_blob(session_key.data, session_key.length);
53 }
54
55 /****************************************************************************
56 Do an old lanman2 style session setup.
57 ****************************************************************************/
58
59 static BOOL cli_session_setup_lanman2(struct cli_state *cli, const char *user,
60 const char *pass, size_t passlen, const char *workgroup)
61 {
62 DATA_BLOB session_key = data_blob(NULL, 0);
63 DATA_BLOB lm_response = data_blob(NULL, 0);
64 fstring pword;
65 char *p;
66
67 if (passlen > sizeof(pword)-1)
68 return False;
69
70 /* LANMAN servers predate NT status codes and Unicode and ignore those
71 smb flags so we must disable the corresponding default capabilities
72 that would otherwise cause the Unicode and NT Status flags to be
73 set (and even returned by the server) */
74
75 cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
76
77 /* if in share level security then don't send a password now */
78 if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
79 passlen = 0;
80
81 if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
82 /* Encrypted mode needed, and non encrypted password supplied. */
83 lm_response = data_blob(NULL, 24);
84 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
85 DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
86 return False;
87 }
88 } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
89 /* Encrypted mode needed, and encrypted password supplied. */
90 lm_response = data_blob(pass, passlen);
91 } else if (passlen > 0) {
92 /* Plaintext mode needed, assume plaintext supplied. */
93 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
94 lm_response = data_blob(pass, passlen);
95 }
96
97 /* send a session setup command */
98 memset(cli->outbuf,'\0',smb_size);
99 set_message(cli->outbuf,10, 0, True);
100 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
101 cli_setup_packet(cli);
102
103 SCVAL(cli->outbuf,smb_vwv0,0xFF);
104 SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
105 SSVAL(cli->outbuf,smb_vwv3,2);
106 SSVAL(cli->outbuf,smb_vwv4,1);
107 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
108 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
109
110 p = smb_buf(cli->outbuf);
111 memcpy(p,lm_response.data,lm_response.length);
112 p += lm_response.length;
113 p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
114 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
115 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
116 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
117 cli_setup_bcc(cli, p);
118
119 cli_send_smb(cli);
120 if (!cli_receive_smb(cli))
121 return False;
122
123 show_msg(cli->inbuf);
124
125 if (cli_is_error(cli))
126 return False;
127
128 /* use the returned vuid from now on */
129 cli->vuid = SVAL(cli->inbuf,smb_uid);
130 fstrcpy(cli->user_name, user);
131
132 if (session_key.data) {
133 /* Have plaintext orginal */
134 cli_set_session_key(cli, session_key);
135 }
136
137 return True;
138 }
139
140 /****************************************************************************
141 Work out suitable capabilities to offer the server.
142 ****************************************************************************/
143
144 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
145 {
146 uint32 capabilities = CAP_NT_SMBS;
147
148 if (!cli->force_dos_errors)
149 capabilities |= CAP_STATUS32;
150
151 if (cli->use_level_II_oplocks)
152 capabilities |= CAP_LEVEL_II_OPLOCKS;
153
154 capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX));
155 return capabilities;
156 }
157
158 /****************************************************************************
159 Do a NT1 guest session setup.
160 ****************************************************************************/
161
162 static BOOL cli_session_setup_guest(struct cli_state *cli)
163 {
164 char *p;
165 uint32 capabilities = cli_session_setup_capabilities(cli);
166
167 set_message(cli->outbuf,13,0,True);
168 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
169 cli_setup_packet(cli);
170
171 SCVAL(cli->outbuf,smb_vwv0,0xFF);
172 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
173 SSVAL(cli->outbuf,smb_vwv3,2);
174 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
175 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
176 SSVAL(cli->outbuf,smb_vwv7,0);
177 SSVAL(cli->outbuf,smb_vwv8,0);
178 SIVAL(cli->outbuf,smb_vwv11,capabilities);
179 p = smb_buf(cli->outbuf);
180 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
181 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
182 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
183 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
184 cli_setup_bcc(cli, p);
185
186 cli_send_smb(cli);
187 if (!cli_receive_smb(cli))
188 return False;
189
190 show_msg(cli->inbuf);
191
192 if (cli_is_error(cli))
193 return False;
194
195 cli->vuid = SVAL(cli->inbuf,smb_uid);
196
197 p = smb_buf(cli->inbuf);
198 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
199 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
200 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
201
202 fstrcpy(cli->user_name, "");
203
204 return True;
205 }
206
207 /****************************************************************************
208 Do a NT1 plaintext session setup.
209 ****************************************************************************/
210
211 static BOOL cli_session_setup_plaintext(struct cli_state *cli, const char *user,
212 const char *pass, const char *workgroup)
213 {
214 uint32 capabilities = cli_session_setup_capabilities(cli);
215 char *p;
216 fstring lanman;
217
218 fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
219
220 set_message(cli->outbuf,13,0,True);
221 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
222 cli_setup_packet(cli);
223
224 SCVAL(cli->outbuf,smb_vwv0,0xFF);
225 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
226 SSVAL(cli->outbuf,smb_vwv3,2);
227 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
228 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
229 SSVAL(cli->outbuf,smb_vwv8,0);
230 SIVAL(cli->outbuf,smb_vwv11,capabilities);
231 p = smb_buf(cli->outbuf);
232
233 /* check wether to send the ASCII or UNICODE version of the password */
234
235 if ( (capabilities & CAP_UNICODE) == 0 ) {
236 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
237 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
238 }
239 else {
240 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
241 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
242 }
243
244 p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
245 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
246 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
247 p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
248 cli_setup_bcc(cli, p);
249
250 cli_send_smb(cli);
251 if (!cli_receive_smb(cli))
252 return False;
253
254 show_msg(cli->inbuf);
255
256 if (cli_is_error(cli))
257 return False;
258
259 cli->vuid = SVAL(cli->inbuf,smb_uid);
260 p = smb_buf(cli->inbuf);
261 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
262 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
263 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
264 fstrcpy(cli->user_name, user);
265
266 return True;
267 }
268
269 /****************************************************************************
270 do a NT1 NTLM/LM encrypted session setup - for when extended security
271 is not negotiated.
272 @param cli client state to create do session setup on
273 @param user username
274 @param pass *either* cleartext password (passlen !=24) or LM response.
275 @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
276 @param workgroup The user's domain.
277 ****************************************************************************/
278
279 static BOOL cli_session_setup_nt1(struct cli_state *cli, const char *user,
280 const char *pass, size_t passlen,
281 const char *ntpass, size_t ntpasslen,
282 const char *workgroup)
283 {
284 uint32 capabilities = cli_session_setup_capabilities(cli);
285 DATA_BLOB lm_response = data_blob(NULL, 0);
286 DATA_BLOB nt_response = data_blob(NULL, 0);
287 DATA_BLOB session_key = data_blob(NULL, 0);
288 BOOL ret = False;
289 char *p;
290
291 if (passlen == 0) {
292 /* do nothing - guest login */
293 } else if (passlen != 24) {
294 if (lp_client_ntlmv2_auth()) {
295 DATA_BLOB server_chal;
296 DATA_BLOB names_blob;
297 server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
298
299 /* note that the 'workgroup' here is a best guess - we don't know
300 the server's domain at this point. The 'server name' is also
301 dodgy...
302 */
303 names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
304
305 if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
306 &names_blob,
307 &lm_response, &nt_response, &session_key)) {
308 data_blob_free(&names_blob);
309 data_blob_free(&server_chal);
310 return False;
311 }
312 data_blob_free(&names_blob);
313 data_blob_free(&server_chal);
314
315 } else {
316 uchar nt_hash[16];
317 E_md4hash(pass, nt_hash);
318
319 #ifdef LANMAN_ONLY
320 nt_response = data_blob(NULL, 0);
321 #else
322 nt_response = data_blob(NULL, 24);
323 SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
324 #endif
325 /* non encrypted password supplied. Ignore ntpass. */
326 if (lp_client_lanman_auth()) {
327 lm_response = data_blob(NULL, 24);
328 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
329 /* Oops, the LM response is invalid, just put
330 the NT response there instead */
331 data_blob_free(&lm_response);
332 lm_response = data_blob(nt_response.data, nt_response.length);
333 }
334 } else {
335 /* LM disabled, place NT# in LM field instead */
336 lm_response = data_blob(nt_response.data, nt_response.length);
337 }
338
339 session_key = data_blob(NULL, 16);
340 #ifdef LANMAN_ONLY
341 E_deshash(pass, session_key.data);
342 memset(&session_key.data[8], '\0', 8);
343 #else
344 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
345 #endif
346 }
347 #ifdef LANMAN_ONLY
348 cli_simple_set_signing(cli, session_key, lm_response);
349 #else
350 cli_simple_set_signing(cli, session_key, nt_response);
351 #endif
352 } else {
353 /* pre-encrypted password supplied. Only used for
354 security=server, can't do
355 signing because we don't have original key */
356
357 lm_response = data_blob(pass, passlen);
358 nt_response = data_blob(ntpass, ntpasslen);
359 }
360
361 /* send a session setup command */
362 memset(cli->outbuf,'\0',smb_size);
363
364 set_message(cli->outbuf,13,0,True);
365 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
366 cli_setup_packet(cli);
367
368 SCVAL(cli->outbuf,smb_vwv0,0xFF);
369 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
370 SSVAL(cli->outbuf,smb_vwv3,2);
371 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
372 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
373 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
374 SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
375 SIVAL(cli->outbuf,smb_vwv11,capabilities);
376 p = smb_buf(cli->outbuf);
377 if (lm_response.length) {
378 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
379 }
380 if (nt_response.length) {
381 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
382 }
383 p += clistr_push(cli, p, user, -1, STR_TERMINATE);
384
385 /* Upper case here might help some NTLMv2 implementations */
386 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
387 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
388 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
389 cli_setup_bcc(cli, p);
390
391 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
392 ret = False;
393 goto end;
394 }
395
396 /* show_msg(cli->inbuf); */
397
398 if (cli_is_error(cli)) {
399 ret = False;
400 goto end;
401 }
402
403 /* use the returned vuid from now on */
404 cli->vuid = SVAL(cli->inbuf,smb_uid);
405
406 p = smb_buf(cli->inbuf);
407 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
408 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
409 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
410
411 fstrcpy(cli->user_name, user);
412
413 if (session_key.data) {
414 /* Have plaintext orginal */
415 cli_set_session_key(cli, session_key);
416 }
417
418 ret = True;
419 end:
420 data_blob_free(&lm_response);
421 data_blob_free(&nt_response);
422 data_blob_free(&session_key);
423 return ret;
424 }
425
426 /****************************************************************************
427 Send a extended security session setup blob
428 ****************************************************************************/
429
430 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
431 {
432 uint32 capabilities = cli_session_setup_capabilities(cli);
433 char *p;
434
435 capabilities |= CAP_EXTENDED_SECURITY;
436
437 /* send a session setup command */
438 memset(cli->outbuf,'\0',smb_size);
439
440 set_message(cli->outbuf,12,0,True);
441 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
442
443 cli_setup_packet(cli);
444
445 SCVAL(cli->outbuf,smb_vwv0,0xFF);
446 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
447 SSVAL(cli->outbuf,smb_vwv3,2);
448 SSVAL(cli->outbuf,smb_vwv4,1);
449 SIVAL(cli->outbuf,smb_vwv5,0);
450 SSVAL(cli->outbuf,smb_vwv7,blob.length);
451 SIVAL(cli->outbuf,smb_vwv10,capabilities);
452 p = smb_buf(cli->outbuf);
453 memcpy(p, blob.data, blob.length);
454 p += blob.length;
455 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
456 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
457 cli_setup_bcc(cli, p);
458 return cli_send_smb(cli);
459 }
460
461 /****************************************************************************
462 Send a extended security session setup blob, returning a reply blob.
463 ****************************************************************************/
464
465 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
466 {
467 DATA_BLOB blob2 = data_blob(NULL, 0);
468 char *p;
469 size_t len;
470
471 if (!cli_receive_smb(cli))
472 return blob2;
473
474 show_msg(cli->inbuf);
475
476 if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
477 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
478 return blob2;
479 }
480
481 /* use the returned vuid from now on */
482 cli->vuid = SVAL(cli->inbuf,smb_uid);
483
484 p = smb_buf(cli->inbuf);
485
486 blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
487
488 p += blob2.length;
489 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
490
491 /* w2k with kerberos doesn't properly null terminate this field */
492 len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
493 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
494
495 return blob2;
496 }
497
498 #ifdef HAVE_KRB5
499
500 /****************************************************************************
501 Send a extended security session setup blob, returning a reply blob.
502 ****************************************************************************/
503
504 static DATA_BLOB cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
505 {
506 DATA_BLOB blob2 = data_blob(NULL, 0);
507 if (!cli_session_setup_blob_send(cli, blob)) {
508 return blob2;
509 }
510
511 return cli_session_setup_blob_receive(cli);
512 }
513
514 /****************************************************************************
515 Use in-memory credentials cache
516 ****************************************************************************/
517
518 static void use_in_memory_ccache(void) {
519 setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
520 }
521
522 /****************************************************************************
523 Do a spnego/kerberos encrypted session setup.
524 ****************************************************************************/
525
526 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
527 {
528 DATA_BLOB blob2, negTokenTarg;
529 DATA_BLOB session_key_krb5;
530 DATA_BLOB null_blob = data_blob(NULL, 0);
531 int rc;
532
533 DEBUG(2,("Doing kerberos session setup\n"));
534
535 /* generate the encapsulated kerberos5 ticket */
536 rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5);
537
538 if (rc) {
539 DEBUG(1, ("spnego_gen_negTokenTarg failed: %s\n", error_message(rc)));
540 return ADS_ERROR_KRB5(rc);
541 }
542
543 #if 0
544 file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
545 #endif
546
547 cli_simple_set_signing(cli, session_key_krb5, null_blob);
548
549 blob2 = cli_session_setup_blob(cli, negTokenTarg);
550
551 /* we don't need this blob for kerberos */
552 data_blob_free(&blob2);
553
554 cli_set_session_key(cli, session_key_krb5);
555
556 data_blob_free(&negTokenTarg);
557 data_blob_free(&session_key_krb5);
558
559 if (cli_is_error(cli)) {
560 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
561 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
562 }
563 }
564 return ADS_ERROR_NT(cli_nt_error(cli));
565 }
566 #endif /* HAVE_KRB5 */
567
568
569 /****************************************************************************
570 Do a spnego/NTLMSSP encrypted session setup.
571 ****************************************************************************/
572
573 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
574 const char *pass, const char *domain)
575 {
576 struct ntlmssp_state *ntlmssp_state;
577 NTSTATUS nt_status;
578 int turn = 1;
579 DATA_BLOB msg1;
580 DATA_BLOB blob = data_blob(NULL, 0);
581 DATA_BLOB blob_in = data_blob(NULL, 0);
582 DATA_BLOB blob_out = data_blob(NULL, 0);
583
584 cli_temp_set_signing(cli);
585
586 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
587 return nt_status;
588 }
589
590 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
591 return nt_status;
592 }
593 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
594 return nt_status;
595 }
596 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
597 return nt_status;
598 }
599
600 do {
601 nt_status = ntlmssp_update(ntlmssp_state,
602 blob_in, &blob_out);
603 data_blob_free(&blob_in);
604 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
605 if (turn == 1) {
606 /* and wrap it in a SPNEGO wrapper */
607 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
608 } else {
609 /* wrap it in SPNEGO */
610 msg1 = spnego_gen_auth(blob_out);
611 }
612
613 /* now send that blob on its way */
614 if (!cli_session_setup_blob_send(cli, msg1)) {
615 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
616 nt_status = NT_STATUS_UNSUCCESSFUL;
617 } else {
618 data_blob_free(&msg1);
619
620 blob = cli_session_setup_blob_receive(cli);
621
622 nt_status = cli_nt_error(cli);
623 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
624 if (cli->smb_rw_error == READ_BAD_SIG) {
625 nt_status = NT_STATUS_ACCESS_DENIED;
626 } else {
627 nt_status = NT_STATUS_UNSUCCESSFUL;
628 }
629 }
630 }
631 }
632
633 if (!blob.length) {
634 if (NT_STATUS_IS_OK(nt_status)) {
635 nt_status = NT_STATUS_UNSUCCESSFUL;
636 }
637 } else if ((turn == 1) &&
638 NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
639 DATA_BLOB tmp_blob = data_blob(NULL, 0);
640 /* the server might give us back two challenges */
641 if (!spnego_parse_challenge(blob, &blob_in,
642 &tmp_blob)) {
643 DEBUG(3,("Failed to parse challenges\n"));
644 nt_status = NT_STATUS_INVALID_PARAMETER;
645 }
646 data_blob_free(&tmp_blob);
647 } else {
648 if (!spnego_parse_auth_response(blob, nt_status,
649 &blob_in)) {
650 DEBUG(3,("Failed to parse auth response\n"));
651 if (NT_STATUS_IS_OK(nt_status)
652 || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
653 nt_status = NT_STATUS_INVALID_PARAMETER;
654 }
655 }
656 data_blob_free(&blob);
657 data_blob_free(&blob_out);
658 turn++;
659 } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
660
661 if (NT_STATUS_IS_OK(nt_status)) {
662
663 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
664 ntlmssp_state->session_key.length);
665 DATA_BLOB null_blob = data_blob(NULL, 0);
666 BOOL res;
667
668 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
669 cli_set_session_key(cli, ntlmssp_state->session_key);
670
671 res = cli_simple_set_signing(cli, key, null_blob);
672
673 data_blob_free(&key);
674
675 if (res) {
676
677 /* 'resign' the last message, so we get the right sequence numbers
678 for checking the first reply from the server */
679 cli_calculate_sign_mac(cli);
680
681 if (!cli_check_sign_mac(cli)) {
682 nt_status = NT_STATUS_ACCESS_DENIED;
683 }
684 }
685 }
686
687 /* we have a reference conter on ntlmssp_state, if we are signing
688 then the state will be kept by the signing engine */
689
690 ntlmssp_end(&ntlmssp_state);
691
692 return nt_status;
693 }
694
695 /****************************************************************************
696 Do a spnego encrypted session setup.
697 ****************************************************************************/
698
699 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
700 const char *pass, const char *domain)
701 {
702 char *principal;
703 char *OIDs[ASN1_MAX_OIDS];
704 int i;
705 BOOL got_kerberos_mechanism = False;
706 DATA_BLOB blob;
707
708 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
709
710 /* the server might not even do spnego */
711 if (cli->secblob.length <= 16) {
712 DEBUG(3,("server didn't supply a full spnego negprot\n"));
713 goto ntlmssp;
714 }
715
716 #if 0
717 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
718 #endif
719
720 /* there is 16 bytes of GUID before the real spnego packet starts */
721 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
722
723 /* the server sent us the first part of the SPNEGO exchange in the negprot
724 reply */
725 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
726 data_blob_free(&blob);
727 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
728 }
729 data_blob_free(&blob);
730
731 /* make sure the server understands kerberos */
732 for (i=0;OIDs[i];i++) {
733 DEBUG(3,("got OID=%s\n", OIDs[i]));
734 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
735 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
736 got_kerberos_mechanism = True;
737 }
738 free(OIDs[i]);
739 }
740 DEBUG(3,("got principal=%s\n", principal));
741
742 fstrcpy(cli->user_name, user);
743
744 #ifdef HAVE_KRB5
745 /* If password is set we reauthenticate to kerberos server
746 * and do not store results */
747
748 if (got_kerberos_mechanism && cli->use_kerberos) {
749 ADS_STATUS rc;
750
751 if (pass && *pass) {
752 int ret;
753
754 use_in_memory_ccache();
755 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL, NULL);
756
757 if (ret){
758 SAFE_FREE(principal);
759 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
760 return ADS_ERROR_KRB5(ret);
761 }
762 }
763
764 rc = cli_session_setup_kerberos(cli, principal, domain);
765 SAFE_FREE(principal);
766 return rc;
767 }
768 #endif
769
770 SAFE_FREE(principal);
771
772 ntlmssp:
773
774 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
775 }
776
777 /****************************************************************************
778 Send a session setup. The username and workgroup is in UNIX character
779 format and must be converted to DOS codepage format before sending. If the
780 password is in plaintext, the same should be done.
781 ****************************************************************************/
782
783 BOOL cli_session_setup(struct cli_state *cli,
784 const char *user,
785 const char *pass, int passlen,
786 const char *ntpass, int ntpasslen,
787 const char *workgroup)
788 {
789 char *p;
790 fstring user2;
791
792 /* allow for workgroups as part of the username */
793 fstrcpy(user2, user);
794 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
795 (p=strchr_m(user2,*lp_winbind_separator()))) {
796 *p = 0;
797 user = p+1;
798 workgroup = user2;
799 }
800
801 if (cli->protocol < PROTOCOL_LANMAN1)
802 return True;
803
804 /* now work out what sort of session setup we are going to
805 do. I have split this into separate functions to make the
806 flow a bit easier to understand (tridge) */
807
808 /* if its an older server then we have to use the older request format */
809
810 if (cli->protocol < PROTOCOL_NT1) {
811 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
812 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
813 " is disabled\n"));
814 return False;
815 }
816
817 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
818 !lp_client_plaintext_auth() && (*pass)) {
819 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
820 " is disabled\n"));
821 return False;
822 }
823
824 return cli_session_setup_lanman2(cli, user, pass, passlen, workgroup);
825 }
826
827 /* if no user is supplied then we have to do an anonymous connection.
828 passwords are ignored */
829
830 if (!user || !*user)
831 return cli_session_setup_guest(cli);
832
833 /* if the server is share level then send a plaintext null
834 password at this point. The password is sent in the tree
835 connect */
836
837 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
838 return cli_session_setup_plaintext(cli, user, "", workgroup);
839
840 /* if the server doesn't support encryption then we have to use
841 plaintext. The second password is ignored */
842
843 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
844 if (!lp_client_plaintext_auth() && (*pass)) {
845 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
846 " is disabled\n"));
847 return False;
848 }
849 return cli_session_setup_plaintext(cli, user, pass, workgroup);
850 }
851
852 /* if the server supports extended security then use SPNEGO */
853
854 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
855 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
856 if (!ADS_ERR_OK(status)) {
857 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
858 return False;
859 }
860 return True;
861 }
862
863 /* otherwise do a NT1 style session setup */
864
865 return cli_session_setup_nt1(cli, user,
866 pass, passlen, ntpass, ntpasslen,
867 workgroup);
868 }
869
870 /****************************************************************************
871 Send a uloggoff.
872 *****************************************************************************/
873
874 BOOL cli_ulogoff(struct cli_state *cli)
875 {
876 memset(cli->outbuf,'\0',smb_size);
877 set_message(cli->outbuf,2,0,True);
878 SCVAL(cli->outbuf,smb_com,SMBulogoffX);
879 cli_setup_packet(cli);
880 SSVAL(cli->outbuf,smb_vwv0,0xFF);
881 SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
882
883 cli_send_smb(cli);
884 if (!cli_receive_smb(cli))
885 return False;
886
887 return !cli_is_error(cli);
888 }
889
890 /****************************************************************************
891 Send a tconX.
892 ****************************************************************************/
893 BOOL cli_send_tconX(struct cli_state *cli,
894 const char *share, const char *dev, const char *pass, int passlen)
895 {
896 fstring fullshare, pword;
897 char *p;
898 memset(cli->outbuf,'\0',smb_size);
899 memset(cli->inbuf,'\0',smb_size);
900
901 fstrcpy(cli->share, share);
902
903 /* in user level security don't send a password now */
904 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
905 passlen = 1;
906 pass = "";
907 }
908
909 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && *pass && passlen != 24) {
910 if (!lp_client_lanman_auth()) {
911 DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
912 " is disabled\n"));
913 return False;
914 }
915
916 /*
917 * Non-encrypted passwords - convert to DOS codepage before encryption.
918 */
919 passlen = 24;
920 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
921 } else {
922 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
923 if (!lp_client_plaintext_auth() && (*pass)) {
924 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
925 " is disabled\n"));
926 return False;
927 }
928
929 /*
930 * Non-encrypted passwords - convert to DOS codepage before using.
931 */
932 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
933
934 } else {
935 memcpy(pword, pass, passlen);
936 }
937 }
938
939 slprintf(fullshare, sizeof(fullshare)-1,
940 "\\\\%s\\%s", cli->desthost, share);
941
942 set_message(cli->outbuf,4, 0, True);
943 SCVAL(cli->outbuf,smb_com,SMBtconX);
944 cli_setup_packet(cli);
945
946 SSVAL(cli->outbuf,smb_vwv0,0xFF);
947 SSVAL(cli->outbuf,smb_vwv3,passlen);
948
949 p = smb_buf(cli->outbuf);
950 memcpy(p,pword,passlen);
951 p += passlen;
952 p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
953 p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
954
955 cli_setup_bcc(cli, p);
956
957 cli_send_smb(cli);
958 if (!cli_receive_smb(cli))
959 return False;
960
961 if (cli_is_error(cli))
962 return False;
963
964 clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
965
966 if (cli->protocol >= PROTOCOL_NT1 &&
967 smb_buflen(cli->inbuf) == 3) {
968 /* almost certainly win95 - enable bug fixes */
969 cli->win95 = True;
970 }
971
972 cli->cnum = SVAL(cli->inbuf,smb_tid);
973 return True;
974 }
975
976 /****************************************************************************
977 Send a tree disconnect.
978 ****************************************************************************/
979
980 BOOL cli_tdis(struct cli_state *cli)
981 {
982 memset(cli->outbuf,'\0',smb_size);
983 set_message(cli->outbuf,0,0,True);
984 SCVAL(cli->outbuf,smb_com,SMBtdis);
985 SSVAL(cli->outbuf,smb_tid,cli->cnum);
986 cli_setup_packet(cli);
987
988 cli_send_smb(cli);
989 if (!cli_receive_smb(cli))
990 return False;
991
992 return !cli_is_error(cli);
993 }
994
995 /****************************************************************************
996 Send a negprot command.
997 ****************************************************************************/
998
999 void cli_negprot_send(struct cli_state *cli)
1000 {
1001 char *p;
1002 int numprots;
1003
1004 if (cli->protocol < PROTOCOL_NT1)
1005 cli->use_spnego = False;
1006
1007 memset(cli->outbuf,'\0',smb_size);
1008
1009 /* setup the protocol strings */
1010 set_message(cli->outbuf,0,0,True);
1011
1012 p = smb_buf(cli->outbuf);
1013 for (numprots=0;
1014 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1015 numprots++) {
1016 *p++ = 2;
1017 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1018 }
1019
1020 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1021 cli_setup_bcc(cli, p);
1022 cli_setup_packet(cli);
1023
1024 SCVAL(smb_buf(cli->outbuf),0,2);
1025
1026 cli_send_smb(cli);
1027 }
1028
1029 /****************************************************************************
1030 Send a negprot command.
1031 ****************************************************************************/
1032
1033 BOOL cli_negprot(struct cli_state *cli)
1034 {
1035 char *p;
1036 int numprots;
1037 int plength;
1038
1039 if (cli->protocol < PROTOCOL_NT1)
1040 cli->use_spnego = False;
1041
1042 memset(cli->outbuf,'\0',smb_size);
1043
1044 /* setup the protocol strings */
1045 for (plength=0,numprots=0;
1046 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1047 numprots++)
1048 plength += strlen(prots[numprots].name)+2;
1049
1050 set_message(cli->outbuf,0,plength,True);
1051
1052 p = smb_buf(cli->outbuf);
1053 for (numprots=0;
1054 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1055 numprots++) {
1056 *p++ = 2;
1057 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1058 }
1059
1060 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1061 cli_setup_packet(cli);
1062
1063 SCVAL(smb_buf(cli->outbuf),0,2);
1064
1065 cli_send_smb(cli);
1066 if (!cli_receive_smb(cli))
1067 return False;
1068
1069 show_msg(cli->inbuf);
1070
1071 if (cli_is_error(cli) ||
1072 ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1073 return(False);
1074 }
1075
1076 cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1077
1078 if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1079 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1080 return False;
1081 }
1082
1083 if (cli->protocol >= PROTOCOL_NT1) {
1084 /* NT protocol */
1085 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1086 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1087 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1088 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1089 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1090 cli->serverzone *= 60;
1091 /* this time arrives in real GMT */
1092 cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
1093 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1094 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1095 if (cli->capabilities & CAP_RAW_MODE) {
1096 cli->readbraw_supported = True;
1097 cli->writebraw_supported = True;
1098 }
1099 /* work out if they sent us a workgroup */
1100 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1101 smb_buflen(cli->inbuf) > 8) {
1102 clistr_pull(cli, cli->server_domain,
1103 smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1104 smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1105 }
1106
1107 /*
1108 * As signing is slow we only turn it on if either the client or
1109 * the server require it. JRA.
1110 */
1111
1112 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1113 /* Fail if server says signing is mandatory and we don't want to support it. */
1114 if (!cli->sign_info.allow_smb_signing) {
1115 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1116 return False;
1117 }
1118 cli->sign_info.negotiated_smb_signing = True;
1119 cli->sign_info.mandatory_signing = True;
1120 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1121 /* Fail if client says signing is mandatory and the server doesn't support it. */
1122 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1123 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1124 return False;
1125 }
1126 cli->sign_info.negotiated_smb_signing = True;
1127 cli->sign_info.mandatory_signing = True;
1128 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1129 cli->sign_info.negotiated_smb_signing = True;
1130 }
1131
1132 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1133 SAFE_FREE(cli->outbuf);
1134 SAFE_FREE(cli->inbuf);
1135 cli->outbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1136 cli->inbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1137 cli->bufsize = CLI_MAX_LARGE_READX_SIZE;
1138 }
1139
1140 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1141 cli->use_spnego = False;
1142 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1143 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1144 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1145 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1146 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1147 cli->serverzone *= 60;
1148 /* this time is converted to GMT by make_unix_date */
1149 cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
1150 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1151 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1152 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1153 } else {
1154 /* the old core protocol */
1155 cli->use_spnego = False;
1156 cli->sec_mode = 0;
1157 cli->serverzone = TimeDiff(time(NULL));
1158 }
1159
1160 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1161
1162 /* a way to force ascii SMB */
1163 if (getenv("CLI_FORCE_ASCII"))
1164 cli->capabilities &= ~CAP_UNICODE;
1165
1166 return True;
1167 }
1168
1169 /****************************************************************************
1170 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1171 ****************************************************************************/
1172
1173 BOOL cli_session_request(struct cli_state *cli,
1174 struct nmb_name *calling, struct nmb_name *called)
1175 {
1176 char *p;
1177 int len = 4;
1178 extern pstring user_socket_options;
1179
1180 memcpy(&(cli->calling), calling, sizeof(*calling));
1181 memcpy(&(cli->called ), called , sizeof(*called ));
1182
1183 /* put in the destination name */
1184 p = cli->outbuf+len;
1185 name_mangle(cli->called .name, p, cli->called .name_type);
1186 len += name_len(p);
1187
1188 /* and my name */
1189 p = cli->outbuf+len;
1190 name_mangle(cli->calling.name, p, cli->calling.name_type);
1191 len += name_len(p);
1192
1193 /* 445 doesn't have session request */
1194 if (cli->port == 445)
1195 return True;
1196
1197 /* send a session request (RFC 1002) */
1198 /* setup the packet length
1199 * Remove four bytes from the length count, since the length
1200 * field in the NBT Session Service header counts the number
1201 * of bytes which follow. The cli_send_smb() function knows
1202 * about this and accounts for those four bytes.
1203 * CRH.
1204 */
1205 len -= 4;
1206 _smb_setlen(cli->outbuf,len);
1207 SCVAL(cli->outbuf,0,0x81);
1208
1209 cli_send_smb(cli);
1210 DEBUG(5,("Sent session request\n"));
1211
1212 if (!cli_receive_smb(cli))
1213 return False;
1214
1215 if (CVAL(cli->inbuf,0) == 0x84) {
1216 /* C. Hoch 9/14/95 Start */
1217 /* For information, here is the response structure.
1218 * We do the byte-twiddling to for portability.
1219 struct RetargetResponse{
1220 unsigned char type;
1221 unsigned char flags;
1222 int16 length;
1223 int32 ip_addr;
1224 int16 port;
1225 };
1226 */
1227 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1228 /* SESSION RETARGET */
1229 putip((char *)&cli->dest_ip,cli->inbuf+4);
1230
1231 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1232 if (cli->fd == -1)
1233 return False;
1234
1235 DEBUG(3,("Retargeted\n"));
1236
1237 set_socket_options(cli->fd,user_socket_options);
1238
1239 /* Try again */
1240 {
1241 static int depth;
1242 BOOL ret;
1243 if (depth > 4) {
1244 DEBUG(0,("Retarget recursion - failing\n"));
1245 return False;
1246 }
1247 depth++;
1248 ret = cli_session_request(cli, calling, called);
1249 depth--;
1250 return ret;
1251 }
1252 } /* C. Hoch 9/14/95 End */
1253
1254 if (CVAL(cli->inbuf,0) != 0x82) {
1255 /* This is the wrong place to put the error... JRA. */
1256 cli->rap_error = CVAL(cli->inbuf,4);
1257 return False;
1258 }
1259 return(True);
1260 }
1261
1262 /****************************************************************************
1263 Open the client sockets.
1264 ****************************************************************************/
1265
1266 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1267 {
1268 extern pstring user_socket_options;
1269 int name_type = 0x20;
1270 char *p;
1271
1272 /* reasonable default hostname */
1273 if (!host) host = "*SMBSERVER";
1274
1275 fstrcpy(cli->desthost, host);
1276
1277 /* allow hostnames of the form NAME#xx and do a netbios lookup */
1278 if ((p = strchr(cli->desthost, '#'))) {
1279 name_type = strtol(p+1, NULL, 16);
1280 *p = 0;
1281 }
1282
1283 if (!ip || is_zero_ip(*ip)) {
1284 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1285 return False;
1286 }
1287 if (ip) *ip = cli->dest_ip;
1288 } else {
1289 cli->dest_ip = *ip;
1290 }
1291
1292 if (getenv("LIBSMB_PROG")) {
1293 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1294 } else {
1295 /* try 445 first, then 139 */
1296 int port = cli->port?cli->port:445;
1297 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1298 port, cli->timeout);
1299 if (cli->fd == -1 && cli->port == 0) {
1300 port = 139;
1301 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1302 port, cli->timeout);
1303 }
1304 if (cli->fd != -1)
1305 cli->port = port;
1306 }
1307 if (cli->fd == -1) {
1308 DEBUG(1,("Error connecting to %s (%s)\n",
1309 ip?inet_ntoa(*ip):host,strerror(errno)));
1310 return False;
1311 }
1312
1313 set_socket_options(cli->fd,user_socket_options);
1314
1315 return True;
1316 }
1317
1318 /****************************************************************************
1319 Initialise client credentials for authenticated pipe access.
1320 ****************************************************************************/
1321
1322 void init_creds(struct ntuser_creds *creds, const char* username,
1323 const char* domain, const char* password)
1324 {
1325 ZERO_STRUCTP(creds);
1326
1327 pwd_set_cleartext(&creds->pwd, password);
1328
1329 fstrcpy(creds->user_name, username);
1330 fstrcpy(creds->domain, domain);
1331
1332 if (!*username) {
1333 creds->pwd.null_pwd = True;
1334 }
1335 }
1336
1337 /**
1338 establishes a connection to after the negprot.
1339 @param output_cli A fully initialised cli structure, non-null only on success
1340 @param dest_host The netbios name of the remote host
1341 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1342 @param port (optional) The destination port (0 for default)
1343 @param retry BOOL. Did this connection fail with a retryable error ?
1344
1345 */
1346 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1347 const char *my_name,
1348 const char *dest_host,
1349 struct in_addr *dest_ip, int port,
1350 int signing_state, int flags,
1351 BOOL *retry)
1352 {
1353 NTSTATUS nt_status;
1354 struct nmb_name calling;
1355 struct nmb_name called;
1356 struct cli_state *cli;
1357 struct in_addr ip;
1358
1359 if (retry)
1360 *retry = False;
1361
1362 if (!my_name)
1363 my_name = global_myname();
1364
1365 if (!(cli = cli_initialise(NULL)))
1366 return NT_STATUS_NO_MEMORY;
1367
1368 make_nmb_name(&calling, my_name, 0x0);
1369 make_nmb_name(&called , dest_host, 0x20);
1370
1371 if (cli_set_port(cli, port) != port) {
1372 cli_shutdown(cli);
1373 return NT_STATUS_UNSUCCESSFUL;
1374 }
1375
1376 cli_set_timeout(cli, 10000); /* 10 seconds. */
1377
1378 if (dest_ip)
1379 ip = *dest_ip;
1380 else
1381 ZERO_STRUCT(ip);
1382
1383 again:
1384
1385 DEBUG(3,("Connecting to host=%s\n", dest_host));
1386
1387 if (!cli_connect(cli, dest_host, &ip)) {
1388 DEBUG(1,("cli_full_connection: failed to connect to %s (%s)\n",
1389 nmb_namestr(&called), inet_ntoa(ip)));
1390 cli_shutdown(cli);
1391 return NT_STATUS_UNSUCCESSFUL;
1392 }
1393
1394 if (retry)
1395 *retry = True;
1396
1397 if (!cli_session_request(cli, &calling, &called)) {
1398 char *p;
1399 DEBUG(1,("session request to %s failed (%s)\n",
1400 called.name, cli_errstr(cli)));
1401 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1402 *p = 0;
1403 goto again;
1404 }
1405 if (strcmp(called.name, "*SMBSERVER")) {
1406 make_nmb_name(&called , "*SMBSERVER", 0x20);
1407 goto again;
1408 }
1409 return NT_STATUS_UNSUCCESSFUL;
1410 }
1411
1412 cli_setup_signing_state(cli, signing_state);
1413
1414 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1415 cli->use_spnego = False;
1416 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1417 cli->use_kerberos = True;
1418
1419 if (!cli_negprot(cli)) {
1420 DEBUG(1,("failed negprot\n"));
1421 nt_status = NT_STATUS_UNSUCCESSFUL;
1422 cli_shutdown(cli);
1423 return nt_status;
1424 }
1425
1426 *output_cli = cli;
1427 return NT_STATUS_OK;
1428 }
1429
1430
1431 /**
1432 establishes a connection right up to doing tconX, password specified.
1433 @param output_cli A fully initialised cli structure, non-null only on success
1434 @param dest_host The netbios name of the remote host
1435 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1436 @param port (optional) The destination port (0 for default)
1437 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1438 @param service_type The 'type' of serivice.
1439 @param user Username, unix string
1440 @param domain User's domain
1441 @param password User's password, unencrypted unix string.
1442 @param retry BOOL. Did this connection fail with a retryable error ?
1443 */
1444
1445 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1446 const char *my_name,
1447 const char *dest_host,
1448 struct in_addr *dest_ip, int port,
1449 const char *service, const char *service_type,
1450 const char *user, const char *domain,
1451 const char *password, int flags,
1452 int signing_state,
1453 BOOL *retry)
1454 {
1455 struct ntuser_creds creds;
1456 NTSTATUS nt_status;
1457 struct cli_state *cli = NULL;
1458
1459 nt_status = cli_start_connection(&cli, my_name, dest_host,
1460 dest_ip, port, signing_state, flags, retry);
1461
1462 if (!NT_STATUS_IS_OK(nt_status)) {
1463 return nt_status;
1464 }
1465
1466 if (!cli_session_setup(cli, user, password, strlen(password)+1,
1467 password, strlen(password)+1,
1468 domain)) {
1469 if ((flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)
1470 && cli_session_setup(cli, "", "", 0, "", 0, domain)) {
1471 } else {
1472 nt_status = cli_nt_error(cli);
1473 DEBUG(1,("failed session setup with %s\n", nt_errstr(nt_status)));
1474 cli_shutdown(cli);
1475 if (NT_STATUS_IS_OK(nt_status))
1476 nt_status = NT_STATUS_UNSUCCESSFUL;
1477 return nt_status;
1478 }
1479 }
1480
1481 if (service) {
1482 if (!cli_send_tconX(cli, service, service_type,
1483 password, strlen(password)+1)) {
1484 nt_status = cli_nt_error(cli);
1485 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1486 cli_shutdown(cli);
1487 if (NT_STATUS_IS_OK(nt_status)) {
1488 nt_status = NT_STATUS_UNSUCCESSFUL;
1489 }
1490 return nt_status;
1491 }
1492 }
1493
1494 init_creds(&creds, user, domain, password);
1495 cli_init_creds(cli, &creds);
1496
1497 *output_cli = cli;
1498 return NT_STATUS_OK;
1499 }
1500
1501 /****************************************************************************
1502 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1503 ****************************************************************************/
1504
1505 BOOL attempt_netbios_session_request(struct cli_state *cli, const char *srchost, const char *desthost,
1506 struct in_addr *pdest_ip)
1507 {
1508 struct nmb_name calling, called;
1509
1510 make_nmb_name(&calling, srchost, 0x0);
1511
1512 /*
1513 * If the called name is an IP address
1514 * then use *SMBSERVER immediately.
1515 */
1516
1517 if(is_ipaddress(desthost))
1518 make_nmb_name(&called, "*SMBSERVER", 0x20);
1519 else
1520 make_nmb_name(&called, desthost, 0x20);
1521
1522 if (!cli_session_request(cli, &calling, &called)) {
1523 struct nmb_name smbservername;
1524
1525 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1526
1527 /*
1528 * If the name wasn't *SMBSERVER then
1529 * try with *SMBSERVER if the first name fails.
1530 */
1531
1532 if (nmb_name_equal(&called, &smbservername)) {
1533
1534 /*
1535 * The name used was *SMBSERVER, don't bother with another name.
1536 */
1537
1538 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1539 with error %s.\n", desthost, cli_errstr(cli) ));
1540 return False;
1541 }
1542
1543 /*
1544 * We need to close the connection here but can't call cli_shutdown as
1545 * will free an allocated cli struct. cli_close_connection was invented
1546 * for this purpose. JRA. Based on work by "Kim R. Pedersen" <krp@filanet.dk>.
1547 */
1548
1549 cli_close_connection(cli);
1550
1551 if (!cli_initialise(cli) ||
1552 !cli_connect(cli, desthost, pdest_ip) ||
1553 !cli_session_request(cli, &calling, &smbservername)) {
1554 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1555 name *SMBSERVER with error %s\n", desthost, cli_errstr(cli) ));
1556 return False;
1557 }
1558 }
1559
1560 return True;
1561 }
1562
1563
1564
1565
1566
1567 /****************************************************************************
1568 Send an old style tcon.
1569 ****************************************************************************/
1570 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1571 const char *service, const char *pass, const char *dev,
1572 uint16 *max_xmit, uint16 *tid)
1573 {
1574 char *p;
1575
1576 if (!lp_client_plaintext_auth() && (*pass)) {
1577 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1578 " is disabled\n"));
1579 return NT_STATUS_ACCESS_DENIED;
1580 }
1581
1582 memset(cli->outbuf,'\0',smb_size);
1583 memset(cli->inbuf,'\0',smb_size);
1584
1585 set_message(cli->outbuf, 0, 0, True);
1586 SCVAL(cli->outbuf,smb_com,SMBtcon);
1587 cli_setup_packet(cli);
1588
1589 p = smb_buf(cli->outbuf);
1590 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1591 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1592 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1593
1594 cli_setup_bcc(cli, p);
1595
1596 cli_send_smb(cli);
1597 if (!cli_receive_smb(cli)) {
1598 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1599 }
1600
1601 if (cli_is_error(cli)) {
1602 return cli_nt_error(cli);
1603 }
1604
1605 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1606 *tid = SVAL(cli->inbuf, smb_vwv1);
1607
1608 return NT_STATUS_OK;
1609 }
1610
1611 /* Return a cli_state pointing at the IPC$ share for the given server */
1612
1613 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1614 struct user_auth_info *user_info)
1615 {
1616 struct cli_state *cli;
1617 pstring myname;
1618 NTSTATUS nt_status;
1619
1620 get_myname(myname);
1621
1622 nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1623 user_info->username, lp_workgroup(), user_info->password,
1624 CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1625
1626 if (NT_STATUS_IS_OK(nt_status)) {
1627 return cli;
1628 } else if (is_ipaddress(server)) {
1629 /* windows 9* needs a correct NMB name for connections */
1630 fstring remote_name;
1631
1632 if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1633 cli = get_ipc_connect(remote_name, server_ip, user_info);
1634 if (cli)
1635 return cli;
1636 }
1637 }
1638 return NULL;
1639 }
1640
1641 /*
1642 * Given the IP address of a master browser on the network, return its
1643 * workgroup and connect to it.
1644 *
1645 * This function is provided to allow additional processing beyond what
1646 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1647 * browsers and obtain each master browsers' list of domains (in case the
1648 * first master browser is recently on the network and has not yet
1649 * synchronized with other master browsers and therefore does not yet have the
1650 * entire network browse list)
1651 */
1652
1653 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1654 {
1655 static fstring name;
1656 struct cli_state *cli;
1657 struct in_addr server_ip;
1658
1659 DEBUG(99, ("Looking up name of master browser %s\n",
1660 inet_ntoa(mb_ip->ip)));
1661
1662 /*
1663 * Do a name status query to find out the name of the master browser.
1664 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1665 * master browser will not respond to a wildcard query (or, at least,
1666 * an NT4 server acting as the domain master browser will not).
1667 *
1668 * We might be able to use ONLY the query on MSBROWSE, but that's not
1669 * yet been tested with all Windows versions, so until it is, leave
1670 * the original wildcard query as the first choice and fall back to
1671 * MSBROWSE if the wildcard query fails.
1672 */
1673 if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1674 !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1675
1676 DEBUG(99, ("Could not retrieve name status for %s\n",
1677 inet_ntoa(mb_ip->ip)));
1678 return NULL;
1679 }
1680
1681 if (!find_master_ip(name, &server_ip)) {
1682 DEBUG(99, ("Could not find master ip for %s\n", name));
1683 return NULL;
1684 }
1685
1686 pstrcpy(workgroup, name);
1687
1688 DEBUG(4, ("found master browser %s, %s\n",
1689 name, inet_ntoa(mb_ip->ip)));
1690
1691 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1692
1693 return cli;
1694
1695 }
1696
1697 /*
1698 * Return the IP address and workgroup of a master browser on the network, and
1699 * connect to it.
1700 */
1701
1702 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1703 {
1704 struct ip_service *ip_list;
1705 struct cli_state *cli;
1706 int i, count;
1707
1708 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1709
1710 /* Go looking for workgroups by broadcasting on the local network */
1711
1712 if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1713 DEBUG(99, ("No master browsers responded\n"));
1714 return False;
1715 }
1716
1717 for (i = 0; i < count; i++) {
1718 DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1719
1720 cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1721 if (cli)
1722 return(cli);
1723 }
1724
1725 return NULL;
1726 }
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