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r22950: Fix the issue Volker reported here :
[Samba/bb.git] / source3 / libsmb / cliconnect.c
blob86834ad081b6fd7508d0ba60c20d442d8a5adf25
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 #include "includes.h"
23
24 extern pstring user_socket_options;
25
26 static const struct {
27 int prot;
28 const char *name;
29 } prots[] = {
30 {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
31 {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
32 {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
33 {PROTOCOL_LANMAN1,"LANMAN1.0"},
34 {PROTOCOL_LANMAN2,"LM1.2X002"},
35 {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
36 {PROTOCOL_LANMAN2,"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 NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
60 const char *user,
61 const char *pass, size_t passlen,
62 const char *workgroup)
63 {
64 DATA_BLOB session_key = data_blob_null;
65 DATA_BLOB lm_response = data_blob_null;
66 fstring pword;
67 char *p;
68
69 if (passlen > sizeof(pword)-1) {
70 return NT_STATUS_INVALID_PARAMETER;
71 }
72
73 /* LANMAN servers predate NT status codes and Unicode and ignore those
74 smb flags so we must disable the corresponding default capabilities
75 that would otherwise cause the Unicode and NT Status flags to be
76 set (and even returned by the server) */
77
78 cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
79
80 /* if in share level security then don't send a password now */
81 if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
82 passlen = 0;
83
84 if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
85 /* Encrypted mode needed, and non encrypted password supplied. */
86 lm_response = data_blob(NULL, 24);
87 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
88 DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
89 return NT_STATUS_ACCESS_DENIED;
90 }
91 } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
92 /* Encrypted mode needed, and encrypted password supplied. */
93 lm_response = data_blob(pass, passlen);
94 } else if (passlen > 0) {
95 /* Plaintext mode needed, assume plaintext supplied. */
96 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
97 lm_response = data_blob(pass, passlen);
98 }
99
100 /* send a session setup command */
101 memset(cli->outbuf,'\0',smb_size);
102 set_message(NULL,cli->outbuf,10, 0, True);
103 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
104 cli_setup_packet(cli);
105
106 SCVAL(cli->outbuf,smb_vwv0,0xFF);
107 SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
108 SSVAL(cli->outbuf,smb_vwv3,2);
109 SSVAL(cli->outbuf,smb_vwv4,1);
110 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
111 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
112
113 p = smb_buf(cli->outbuf);
114 memcpy(p,lm_response.data,lm_response.length);
115 p += lm_response.length;
116 p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
117 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
118 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
119 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
120 cli_setup_bcc(cli, p);
121
122 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
123 return cli_nt_error(cli);
124 }
125
126 show_msg(cli->inbuf);
127
128 if (cli_is_error(cli)) {
129 return cli_nt_error(cli);
130 }
131
132 /* use the returned vuid from now on */
133 cli->vuid = SVAL(cli->inbuf,smb_uid);
134 fstrcpy(cli->user_name, user);
135
136 if (session_key.data) {
137 /* Have plaintext orginal */
138 cli_set_session_key(cli, session_key);
139 }
140
141 return NT_STATUS_OK;
142 }
143
144 /****************************************************************************
145 Work out suitable capabilities to offer the server.
146 ****************************************************************************/
147
148 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
149 {
150 uint32 capabilities = CAP_NT_SMBS;
151
152 if (!cli->force_dos_errors)
153 capabilities |= CAP_STATUS32;
154
155 if (cli->use_level_II_oplocks)
156 capabilities |= CAP_LEVEL_II_OPLOCKS;
157
158 capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
159 return capabilities;
160 }
161
162 /****************************************************************************
163 Do a NT1 guest session setup.
164 ****************************************************************************/
165
166 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
167 {
168 char *p;
169 uint32 capabilities = cli_session_setup_capabilities(cli);
170
171 memset(cli->outbuf, '\0', smb_size);
172 set_message(NULL,cli->outbuf,13,0,True);
173 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
174 cli_setup_packet(cli);
175
176 SCVAL(cli->outbuf,smb_vwv0,0xFF);
177 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
178 SSVAL(cli->outbuf,smb_vwv3,2);
179 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
180 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
181 SSVAL(cli->outbuf,smb_vwv7,0);
182 SSVAL(cli->outbuf,smb_vwv8,0);
183 SIVAL(cli->outbuf,smb_vwv11,capabilities);
184 p = smb_buf(cli->outbuf);
185 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
186 p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
187 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
188 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
189 cli_setup_bcc(cli, p);
190
191 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
192 return cli_nt_error(cli);
193 }
194
195 show_msg(cli->inbuf);
196
197 if (cli_is_error(cli)) {
198 return cli_nt_error(cli);
199 }
200
201 cli->vuid = SVAL(cli->inbuf,smb_uid);
202
203 p = smb_buf(cli->inbuf);
204 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
205 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
206 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
207
208 if (strstr(cli->server_type, "Samba")) {
209 cli->is_samba = True;
210 }
211
212 fstrcpy(cli->user_name, "");
213
214 return NT_STATUS_OK;
215 }
216
217 /****************************************************************************
218 Do a NT1 plaintext session setup.
219 ****************************************************************************/
220
221 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
222 const char *user, const char *pass,
223 const char *workgroup)
224 {
225 uint32 capabilities = cli_session_setup_capabilities(cli);
226 char *p;
227 fstring lanman;
228
229 fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
230
231 memset(cli->outbuf, '\0', smb_size);
232 set_message(NULL,cli->outbuf,13,0,True);
233 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
234 cli_setup_packet(cli);
235
236 SCVAL(cli->outbuf,smb_vwv0,0xFF);
237 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
238 SSVAL(cli->outbuf,smb_vwv3,2);
239 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
240 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
241 SSVAL(cli->outbuf,smb_vwv8,0);
242 SIVAL(cli->outbuf,smb_vwv11,capabilities);
243 p = smb_buf(cli->outbuf);
244
245 /* check wether to send the ASCII or UNICODE version of the password */
246
247 if ( (capabilities & CAP_UNICODE) == 0 ) {
248 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
249 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
250 }
251 else {
252 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
253 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
254 }
255
256 p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
257 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
258 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
259 p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
260 cli_setup_bcc(cli, p);
261
262 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
263 return cli_nt_error(cli);
264 }
265
266 show_msg(cli->inbuf);
267
268 if (cli_is_error(cli)) {
269 return cli_nt_error(cli);
270 }
271
272 cli->vuid = SVAL(cli->inbuf,smb_uid);
273 p = smb_buf(cli->inbuf);
274 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
275 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
276 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
277 fstrcpy(cli->user_name, user);
278
279 if (strstr(cli->server_type, "Samba")) {
280 cli->is_samba = True;
281 }
282
283 return NT_STATUS_OK;
284 }
285
286 /****************************************************************************
287 do a NT1 NTLM/LM encrypted session setup - for when extended security
288 is not negotiated.
289 @param cli client state to create do session setup on
290 @param user username
291 @param pass *either* cleartext password (passlen !=24) or LM response.
292 @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
293 @param workgroup The user's domain.
294 ****************************************************************************/
295
296 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
297 const char *pass, size_t passlen,
298 const char *ntpass, size_t ntpasslen,
299 const char *workgroup)
300 {
301 uint32 capabilities = cli_session_setup_capabilities(cli);
302 DATA_BLOB lm_response = data_blob_null;
303 DATA_BLOB nt_response = data_blob_null;
304 DATA_BLOB session_key = data_blob_null;
305 NTSTATUS result;
306 char *p;
307
308 if (passlen == 0) {
309 /* do nothing - guest login */
310 } else if (passlen != 24) {
311 if (lp_client_ntlmv2_auth()) {
312 DATA_BLOB server_chal;
313 DATA_BLOB names_blob;
314 server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
315
316 /* note that the 'workgroup' here is a best guess - we don't know
317 the server's domain at this point. The 'server name' is also
318 dodgy...
319 */
320 names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
321
322 if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
323 &names_blob,
324 &lm_response, &nt_response, &session_key)) {
325 data_blob_free(&names_blob);
326 data_blob_free(&server_chal);
327 return NT_STATUS_ACCESS_DENIED;
328 }
329 data_blob_free(&names_blob);
330 data_blob_free(&server_chal);
331
332 } else {
333 uchar nt_hash[16];
334 E_md4hash(pass, nt_hash);
335
336 #ifdef LANMAN_ONLY
337 nt_response = data_blob_null;
338 #else
339 nt_response = data_blob(NULL, 24);
340 SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
341 #endif
342 /* non encrypted password supplied. Ignore ntpass. */
343 if (lp_client_lanman_auth()) {
344 lm_response = data_blob(NULL, 24);
345 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
346 /* Oops, the LM response is invalid, just put
347 the NT response there instead */
348 data_blob_free(&lm_response);
349 lm_response = data_blob(nt_response.data, nt_response.length);
350 }
351 } else {
352 /* LM disabled, place NT# in LM field instead */
353 lm_response = data_blob(nt_response.data, nt_response.length);
354 }
355
356 session_key = data_blob(NULL, 16);
357 #ifdef LANMAN_ONLY
358 E_deshash(pass, session_key.data);
359 memset(&session_key.data[8], '\0', 8);
360 #else
361 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
362 #endif
363 }
364 #ifdef LANMAN_ONLY
365 cli_simple_set_signing(cli, session_key, lm_response);
366 #else
367 cli_simple_set_signing(cli, session_key, nt_response);
368 #endif
369 } else {
370 /* pre-encrypted password supplied. Only used for
371 security=server, can't do
372 signing because we don't have original key */
373
374 lm_response = data_blob(pass, passlen);
375 nt_response = data_blob(ntpass, ntpasslen);
376 }
377
378 /* send a session setup command */
379 memset(cli->outbuf,'\0',smb_size);
380
381 set_message(NULL,cli->outbuf,13,0,True);
382 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
383 cli_setup_packet(cli);
384
385 SCVAL(cli->outbuf,smb_vwv0,0xFF);
386 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
387 SSVAL(cli->outbuf,smb_vwv3,2);
388 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
389 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
390 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
391 SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
392 SIVAL(cli->outbuf,smb_vwv11,capabilities);
393 p = smb_buf(cli->outbuf);
394 if (lm_response.length) {
395 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
396 }
397 if (nt_response.length) {
398 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
399 }
400 p += clistr_push(cli, p, user, -1, STR_TERMINATE);
401
402 /* Upper case here might help some NTLMv2 implementations */
403 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
404 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
405 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
406 cli_setup_bcc(cli, p);
407
408 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
409 result = cli_nt_error(cli);
410 goto end;
411 }
412
413 /* show_msg(cli->inbuf); */
414
415 if (cli_is_error(cli)) {
416 result = cli_nt_error(cli);
417 goto end;
418 }
419
420 /* use the returned vuid from now on */
421 cli->vuid = SVAL(cli->inbuf,smb_uid);
422
423 p = smb_buf(cli->inbuf);
424 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
425 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
426 p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
427
428 if (strstr(cli->server_type, "Samba")) {
429 cli->is_samba = True;
430 }
431
432 fstrcpy(cli->user_name, user);
433
434 if (session_key.data) {
435 /* Have plaintext orginal */
436 cli_set_session_key(cli, session_key);
437 }
438
439 result = NT_STATUS_OK;
440 end:
441 data_blob_free(&lm_response);
442 data_blob_free(&nt_response);
443 data_blob_free(&session_key);
444 return result;
445 }
446
447 /****************************************************************************
448 Send a extended security session setup blob
449 ****************************************************************************/
450
451 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
452 {
453 uint32 capabilities = cli_session_setup_capabilities(cli);
454 char *p;
455
456 capabilities |= CAP_EXTENDED_SECURITY;
457
458 /* send a session setup command */
459 memset(cli->outbuf,'\0',smb_size);
460
461 set_message(NULL,cli->outbuf,12,0,True);
462 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
463
464 cli_setup_packet(cli);
465
466 SCVAL(cli->outbuf,smb_vwv0,0xFF);
467 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
468 SSVAL(cli->outbuf,smb_vwv3,2);
469 SSVAL(cli->outbuf,smb_vwv4,1);
470 SIVAL(cli->outbuf,smb_vwv5,0);
471 SSVAL(cli->outbuf,smb_vwv7,blob.length);
472 SIVAL(cli->outbuf,smb_vwv10,capabilities);
473 p = smb_buf(cli->outbuf);
474 memcpy(p, blob.data, blob.length);
475 p += blob.length;
476 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
477 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
478 cli_setup_bcc(cli, p);
479 return cli_send_smb(cli);
480 }
481
482 /****************************************************************************
483 Send a extended security session setup blob, returning a reply blob.
484 ****************************************************************************/
485
486 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
487 {
488 DATA_BLOB blob2 = data_blob_null;
489 char *p;
490 size_t len;
491
492 if (!cli_receive_smb(cli))
493 return blob2;
494
495 show_msg(cli->inbuf);
496
497 if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
498 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
499 return blob2;
500 }
501
502 /* use the returned vuid from now on */
503 cli->vuid = SVAL(cli->inbuf,smb_uid);
504
505 p = smb_buf(cli->inbuf);
506
507 blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
508
509 p += blob2.length;
510 p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
511
512 /* w2k with kerberos doesn't properly null terminate this field */
513 len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
514 p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
515
516 return blob2;
517 }
518
519 #ifdef HAVE_KRB5
520 /****************************************************************************
521 Send a extended security session setup blob, returning a reply blob.
522 ****************************************************************************/
523
524 /* The following is calculated from :
525 * (smb_size-4) = 35
526 * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
527 * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
528 * end of packet.
529 */
530
531 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
532
533 static BOOL cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob, DATA_BLOB session_key_krb5)
534 {
535 int32 remaining = blob.length;
536 int32 cur = 0;
537 DATA_BLOB send_blob = data_blob_null;
538 int32 max_blob_size = 0;
539 DATA_BLOB receive_blob = data_blob_null;
540
541 if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
542 DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
543 "(was %u, need minimum %u)\n",
544 (unsigned int)cli->max_xmit,
545 BASE_SESSSETUP_BLOB_PACKET_SIZE));
546 cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
547 return False;
548 }
549
550 max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
551
552 while ( remaining > 0) {
553 if (remaining >= max_blob_size) {
554 send_blob.length = max_blob_size;
555 remaining -= max_blob_size;
556 } else {
557 DATA_BLOB null_blob = data_blob_null;
558
559 send_blob.length = remaining;
560 remaining = 0;
561
562 /* This is the last packet in the sequence - turn signing on. */
563 cli_simple_set_signing(cli, session_key_krb5, null_blob);
564 }
565
566 send_blob.data = &blob.data[cur];
567 cur += send_blob.length;
568
569 DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
570 (unsigned int)remaining,
571 (unsigned int)send_blob.length,
572 (unsigned int)cur ));
573
574 if (!cli_session_setup_blob_send(cli, send_blob)) {
575 DEBUG(0, ("cli_session_setup_blob: send failed\n"));
576 return False;
577 }
578
579 receive_blob = cli_session_setup_blob_receive(cli);
580 data_blob_free(&receive_blob);
581
582 if (cli_is_error(cli) &&
583 !NT_STATUS_EQUAL( cli_get_nt_error(cli),
584 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
585 DEBUG(0, ("cli_session_setup_blob: recieve failed (%s)\n",
586 nt_errstr(cli_get_nt_error(cli)) ));
587 return False;
588 }
589 }
590
591 return True;
592 }
593
594 /****************************************************************************
595 Use in-memory credentials cache
596 ****************************************************************************/
597
598 static void use_in_memory_ccache(void) {
599 setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
600 }
601
602 /****************************************************************************
603 Do a spnego/kerberos encrypted session setup.
604 ****************************************************************************/
605
606 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
607 {
608 DATA_BLOB negTokenTarg;
609 DATA_BLOB session_key_krb5;
610 int rc;
611
612 DEBUG(2,("Doing kerberos session setup\n"));
613
614 /* generate the encapsulated kerberos5 ticket */
615 rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
616
617 if (rc) {
618 DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
619 error_message(rc)));
620 return ADS_ERROR_KRB5(rc);
621 }
622
623 #if 0
624 file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
625 #endif
626
627 if (!cli_session_setup_blob(cli, negTokenTarg, session_key_krb5)) {
628 data_blob_free(&negTokenTarg);
629 data_blob_free(&session_key_krb5);
630 ADS_ERROR_NT(cli_nt_error(cli));
631 }
632
633 cli_set_session_key(cli, session_key_krb5);
634
635 data_blob_free(&negTokenTarg);
636 data_blob_free(&session_key_krb5);
637
638 if (cli_is_error(cli)) {
639 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
640 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
641 }
642 }
643 return ADS_ERROR_NT(cli_nt_error(cli));
644 }
645 #endif /* HAVE_KRB5 */
646
647
648 /****************************************************************************
649 Do a spnego/NTLMSSP encrypted session setup.
650 ****************************************************************************/
651
652 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
653 const char *pass, const char *domain)
654 {
655 struct ntlmssp_state *ntlmssp_state;
656 NTSTATUS nt_status;
657 int turn = 1;
658 DATA_BLOB msg1;
659 DATA_BLOB blob = data_blob_null;
660 DATA_BLOB blob_in = data_blob_null;
661 DATA_BLOB blob_out = data_blob_null;
662
663 cli_temp_set_signing(cli);
664
665 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
666 return nt_status;
667 }
668 ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
669
670 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
671 return nt_status;
672 }
673 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
674 return nt_status;
675 }
676 if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
677 return nt_status;
678 }
679
680 do {
681 nt_status = ntlmssp_update(ntlmssp_state,
682 blob_in, &blob_out);
683 data_blob_free(&blob_in);
684 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
685 if (turn == 1) {
686 /* and wrap it in a SPNEGO wrapper */
687 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
688 } else {
689 /* wrap it in SPNEGO */
690 msg1 = spnego_gen_auth(blob_out);
691 }
692
693 /* now send that blob on its way */
694 if (!cli_session_setup_blob_send(cli, msg1)) {
695 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
696 nt_status = NT_STATUS_UNSUCCESSFUL;
697 } else {
698 blob = cli_session_setup_blob_receive(cli);
699
700 nt_status = cli_nt_error(cli);
701 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
702 if (cli->smb_rw_error == READ_BAD_SIG) {
703 nt_status = NT_STATUS_ACCESS_DENIED;
704 } else {
705 nt_status = NT_STATUS_UNSUCCESSFUL;
706 }
707 }
708 }
709 data_blob_free(&msg1);
710 }
711
712 if (!blob.length) {
713 if (NT_STATUS_IS_OK(nt_status)) {
714 nt_status = NT_STATUS_UNSUCCESSFUL;
715 }
716 } else if ((turn == 1) &&
717 NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
718 DATA_BLOB tmp_blob = data_blob_null;
719 /* the server might give us back two challenges */
720 if (!spnego_parse_challenge(blob, &blob_in,
721 &tmp_blob)) {
722 DEBUG(3,("Failed to parse challenges\n"));
723 nt_status = NT_STATUS_INVALID_PARAMETER;
724 }
725 data_blob_free(&tmp_blob);
726 } else {
727 if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
728 &blob_in)) {
729 DEBUG(3,("Failed to parse auth response\n"));
730 if (NT_STATUS_IS_OK(nt_status)
731 || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
732 nt_status = NT_STATUS_INVALID_PARAMETER;
733 }
734 }
735 data_blob_free(&blob);
736 data_blob_free(&blob_out);
737 turn++;
738 } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
739
740 data_blob_free(&blob_in);
741
742 if (NT_STATUS_IS_OK(nt_status)) {
743
744 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
745 ntlmssp_state->session_key.length);
746 DATA_BLOB null_blob = data_blob_null;
747 BOOL res;
748
749 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
750 cli_set_session_key(cli, ntlmssp_state->session_key);
751
752 res = cli_simple_set_signing(cli, key, null_blob);
753
754 data_blob_free(&key);
755
756 if (res) {
757
758 /* 'resign' the last message, so we get the right sequence numbers
759 for checking the first reply from the server */
760 cli_calculate_sign_mac(cli);
761
762 if (!cli_check_sign_mac(cli)) {
763 nt_status = NT_STATUS_ACCESS_DENIED;
764 }
765 }
766 }
767
768 /* we have a reference counter on ntlmssp_state, if we are signing
769 then the state will be kept by the signing engine */
770
771 ntlmssp_end(&ntlmssp_state);
772
773 return nt_status;
774 }
775
776 /****************************************************************************
777 Do a spnego encrypted session setup.
778 ****************************************************************************/
779
780 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
781 const char *pass, const char *domain)
782 {
783 char *principal;
784 char *OIDs[ASN1_MAX_OIDS];
785 int i;
786 BOOL got_kerberos_mechanism = False;
787 DATA_BLOB blob;
788
789 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
790
791 /* the server might not even do spnego */
792 if (cli->secblob.length <= 16) {
793 DEBUG(3,("server didn't supply a full spnego negprot\n"));
794 goto ntlmssp;
795 }
796
797 #if 0
798 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
799 #endif
800
801 /* there is 16 bytes of GUID before the real spnego packet starts */
802 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
803
804 /* the server sent us the first part of the SPNEGO exchange in the negprot
805 reply */
806 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
807 data_blob_free(&blob);
808 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
809 }
810 data_blob_free(&blob);
811
812 /* make sure the server understands kerberos */
813 for (i=0;OIDs[i];i++) {
814 DEBUG(3,("got OID=%s\n", OIDs[i]));
815 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
816 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
817 got_kerberos_mechanism = True;
818 }
819 free(OIDs[i]);
820 }
821
822 DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
823
824 if (got_kerberos_mechanism && (principal == NULL)) {
825 /*
826 * It is WRONG to depend on the principal sent in the negprot
827 * reply, but right now we do it. So for safety (don't
828 * segfault later) disable Kerberos when no principal was
829 * sent. -- VL
830 */
831 DEBUG(1, ("Kerberos mech was offered, but no principal was "
832 "sent, disabling Kerberos\n"));
833 cli->use_kerberos = False;
834 }
835
836 fstrcpy(cli->user_name, user);
837
838 #ifdef HAVE_KRB5
839 /* If password is set we reauthenticate to kerberos server
840 * and do not store results */
841
842 if (got_kerberos_mechanism && cli->use_kerberos) {
843 ADS_STATUS rc;
844
845 if (pass && *pass) {
846 int ret;
847
848 use_in_memory_ccache();
849 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
850
851 if (ret){
852 SAFE_FREE(principal);
853 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
854 if (cli->fallback_after_kerberos)
855 goto ntlmssp;
856 return ADS_ERROR_KRB5(ret);
857 }
858 }
859
860 rc = cli_session_setup_kerberos(cli, principal, domain);
861 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
862 SAFE_FREE(principal);
863 return rc;
864 }
865 }
866 #endif
867
868 SAFE_FREE(principal);
869
870 ntlmssp:
871
872 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
873 }
874
875 /****************************************************************************
876 Send a session setup. The username and workgroup is in UNIX character
877 format and must be converted to DOS codepage format before sending. If the
878 password is in plaintext, the same should be done.
879 ****************************************************************************/
880
881 NTSTATUS cli_session_setup(struct cli_state *cli,
882 const char *user,
883 const char *pass, int passlen,
884 const char *ntpass, int ntpasslen,
885 const char *workgroup)
886 {
887 char *p;
888 fstring user2;
889
890 /* allow for workgroups as part of the username */
891 fstrcpy(user2, user);
892 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
893 (p=strchr_m(user2,*lp_winbind_separator()))) {
894 *p = 0;
895 user = p+1;
896 workgroup = user2;
897 }
898
899 if (cli->protocol < PROTOCOL_LANMAN1) {
900 return NT_STATUS_OK;
901 }
902
903 /* now work out what sort of session setup we are going to
904 do. I have split this into separate functions to make the
905 flow a bit easier to understand (tridge) */
906
907 /* if its an older server then we have to use the older request format */
908
909 if (cli->protocol < PROTOCOL_NT1) {
910 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
911 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
912 " is disabled\n"));
913 return NT_STATUS_ACCESS_DENIED;
914 }
915
916 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
917 !lp_client_plaintext_auth() && (*pass)) {
918 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
919 " is disabled\n"));
920 return NT_STATUS_ACCESS_DENIED;
921 }
922
923 return cli_session_setup_lanman2(cli, user, pass, passlen,
924 workgroup);
925 }
926
927 /* if no user is supplied then we have to do an anonymous connection.
928 passwords are ignored */
929
930 if (!user || !*user)
931 return cli_session_setup_guest(cli);
932
933 /* if the server is share level then send a plaintext null
934 password at this point. The password is sent in the tree
935 connect */
936
937 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
938 return cli_session_setup_plaintext(cli, user, "", workgroup);
939
940 /* if the server doesn't support encryption then we have to use
941 plaintext. The second password is ignored */
942
943 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
944 if (!lp_client_plaintext_auth() && (*pass)) {
945 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
946 " is disabled\n"));
947 return NT_STATUS_ACCESS_DENIED;
948 }
949 return cli_session_setup_plaintext(cli, user, pass, workgroup);
950 }
951
952 /* if the server supports extended security then use SPNEGO */
953
954 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
955 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
956 if (!ADS_ERR_OK(status)) {
957 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
958 return ads_ntstatus(status);
959 }
960 } else {
961 NTSTATUS status;
962
963 /* otherwise do a NT1 style session setup */
964 status = cli_session_setup_nt1(cli, user, pass, passlen,
965 ntpass, ntpasslen, workgroup);
966 if (!NT_STATUS_IS_OK(status)) {
967 DEBUG(3,("cli_session_setup: NT1 session setup "
968 "failed: %s\n", nt_errstr(status)));
969 return status;
970 }
971 }
972
973 if (strstr(cli->server_type, "Samba")) {
974 cli->is_samba = True;
975 }
976
977 return NT_STATUS_OK;
978 }
979
980 /****************************************************************************
981 Send a uloggoff.
982 *****************************************************************************/
983
984 BOOL cli_ulogoff(struct cli_state *cli)
985 {
986 memset(cli->outbuf,'\0',smb_size);
987 set_message(NULL,cli->outbuf,2,0,True);
988 SCVAL(cli->outbuf,smb_com,SMBulogoffX);
989 cli_setup_packet(cli);
990 SSVAL(cli->outbuf,smb_vwv0,0xFF);
991 SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
992
993 cli_send_smb(cli);
994 if (!cli_receive_smb(cli))
995 return False;
996
997 if (cli_is_error(cli)) {
998 return False;
999 }
1000
1001 cli->cnum = -1;
1002 return True;
1003 }
1004
1005 /****************************************************************************
1006 Send a tconX.
1007 ****************************************************************************/
1008
1009 BOOL cli_send_tconX(struct cli_state *cli,
1010 const char *share, const char *dev, const char *pass, int passlen)
1011 {
1012 fstring fullshare, pword;
1013 char *p;
1014 memset(cli->outbuf,'\0',smb_size);
1015 memset(cli->inbuf,'\0',smb_size);
1016
1017 fstrcpy(cli->share, share);
1018
1019 /* in user level security don't send a password now */
1020 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1021 passlen = 1;
1022 pass = "";
1023 } else if (!pass) {
1024 DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1025 return False;
1026 }
1027
1028 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1029 *pass && passlen != 24) {
1030 if (!lp_client_lanman_auth()) {
1031 DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
1032 " is disabled\n"));
1033 return False;
1034 }
1035
1036 /*
1037 * Non-encrypted passwords - convert to DOS codepage before encryption.
1038 */
1039 passlen = 24;
1040 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1041 } else {
1042 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1043 if (!lp_client_plaintext_auth() && (*pass)) {
1044 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1045 " is disabled\n"));
1046 return False;
1047 }
1048
1049 /*
1050 * Non-encrypted passwords - convert to DOS codepage before using.
1051 */
1052 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1053
1054 } else {
1055 if (passlen) {
1056 memcpy(pword, pass, passlen);
1057 }
1058 }
1059 }
1060
1061 slprintf(fullshare, sizeof(fullshare)-1,
1062 "\\\\%s\\%s", cli->desthost, share);
1063
1064 set_message(NULL,cli->outbuf,4, 0, True);
1065 SCVAL(cli->outbuf,smb_com,SMBtconX);
1066 cli_setup_packet(cli);
1067
1068 SSVAL(cli->outbuf,smb_vwv0,0xFF);
1069 SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1070 SSVAL(cli->outbuf,smb_vwv3,passlen);
1071
1072 p = smb_buf(cli->outbuf);
1073 if (passlen) {
1074 memcpy(p,pword,passlen);
1075 }
1076 p += passlen;
1077 p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
1078 p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
1079
1080 cli_setup_bcc(cli, p);
1081
1082 cli_send_smb(cli);
1083 if (!cli_receive_smb(cli))
1084 return False;
1085
1086 if (cli_is_error(cli))
1087 return False;
1088
1089 clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
1090
1091 if (cli->protocol >= PROTOCOL_NT1 &&
1092 smb_buflen(cli->inbuf) == 3) {
1093 /* almost certainly win95 - enable bug fixes */
1094 cli->win95 = True;
1095 }
1096
1097 /* Make sure that we have the optional support 16-bit field. WCT > 2 */
1098 /* Avoids issues when connecting to Win9x boxes sharing files */
1099
1100 cli->dfsroot = False;
1101 if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1102 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1103
1104 cli->cnum = SVAL(cli->inbuf,smb_tid);
1105 return True;
1106 }
1107
1108 /****************************************************************************
1109 Send a tree disconnect.
1110 ****************************************************************************/
1111
1112 BOOL cli_tdis(struct cli_state *cli)
1113 {
1114 memset(cli->outbuf,'\0',smb_size);
1115 set_message(NULL,cli->outbuf,0,0,True);
1116 SCVAL(cli->outbuf,smb_com,SMBtdis);
1117 SSVAL(cli->outbuf,smb_tid,cli->cnum);
1118 cli_setup_packet(cli);
1119
1120 cli_send_smb(cli);
1121 if (!cli_receive_smb(cli))
1122 return False;
1123
1124 if (cli_is_error(cli)) {
1125 return False;
1126 }
1127
1128 cli->cnum = -1;
1129 return True;
1130 }
1131
1132 /****************************************************************************
1133 Send a negprot command.
1134 ****************************************************************************/
1135
1136 void cli_negprot_send(struct cli_state *cli)
1137 {
1138 char *p;
1139 int numprots;
1140
1141 if (cli->protocol < PROTOCOL_NT1)
1142 cli->use_spnego = False;
1143
1144 memset(cli->outbuf,'\0',smb_size);
1145
1146 /* setup the protocol strings */
1147 set_message(NULL,cli->outbuf,0,0,True);
1148
1149 p = smb_buf(cli->outbuf);
1150 for (numprots=0;
1151 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1152 numprots++) {
1153 *p++ = 2;
1154 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1155 }
1156
1157 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1158 cli_setup_bcc(cli, p);
1159 cli_setup_packet(cli);
1160
1161 SCVAL(smb_buf(cli->outbuf),0,2);
1162
1163 cli_send_smb(cli);
1164 }
1165
1166 /****************************************************************************
1167 Send a negprot command.
1168 ****************************************************************************/
1169
1170 BOOL cli_negprot(struct cli_state *cli)
1171 {
1172 char *p;
1173 int numprots;
1174 int plength;
1175
1176 if (cli->protocol < PROTOCOL_NT1)
1177 cli->use_spnego = False;
1178
1179 memset(cli->outbuf,'\0',smb_size);
1180
1181 /* setup the protocol strings */
1182 for (plength=0,numprots=0;
1183 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1184 numprots++)
1185 plength += strlen(prots[numprots].name)+2;
1186
1187 set_message(NULL,cli->outbuf,0,plength,True);
1188
1189 p = smb_buf(cli->outbuf);
1190 for (numprots=0;
1191 prots[numprots].name && prots[numprots].prot<=cli->protocol;
1192 numprots++) {
1193 *p++ = 2;
1194 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1195 }
1196
1197 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1198 cli_setup_packet(cli);
1199
1200 SCVAL(smb_buf(cli->outbuf),0,2);
1201
1202 cli_send_smb(cli);
1203 if (!cli_receive_smb(cli))
1204 return False;
1205
1206 show_msg(cli->inbuf);
1207
1208 if (cli_is_error(cli) ||
1209 ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1210 return(False);
1211 }
1212
1213 cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1214
1215 if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1216 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1217 return False;
1218 }
1219
1220 if (cli->protocol >= PROTOCOL_NT1) {
1221 struct timespec ts;
1222 /* NT protocol */
1223 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1224 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1225 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1226 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1227 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1228 cli->serverzone *= 60;
1229 /* this time arrives in real GMT */
1230 ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1231 cli->servertime = ts.tv_sec;
1232 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1233 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1234 if (cli->capabilities & CAP_RAW_MODE) {
1235 cli->readbraw_supported = True;
1236 cli->writebraw_supported = True;
1237 }
1238 /* work out if they sent us a workgroup */
1239 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1240 smb_buflen(cli->inbuf) > 8) {
1241 clistr_pull(cli, cli->server_domain,
1242 smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1243 smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1244 }
1245
1246 /*
1247 * As signing is slow we only turn it on if either the client or
1248 * the server require it. JRA.
1249 */
1250
1251 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1252 /* Fail if server says signing is mandatory and we don't want to support it. */
1253 if (!cli->sign_info.allow_smb_signing) {
1254 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1255 return False;
1256 }
1257 cli->sign_info.negotiated_smb_signing = True;
1258 cli->sign_info.mandatory_signing = True;
1259 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1260 /* Fail if client says signing is mandatory and the server doesn't support it. */
1261 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1262 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1263 return False;
1264 }
1265 cli->sign_info.negotiated_smb_signing = True;
1266 cli->sign_info.mandatory_signing = True;
1267 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1268 cli->sign_info.negotiated_smb_signing = True;
1269 }
1270
1271 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1272 SAFE_FREE(cli->outbuf);
1273 SAFE_FREE(cli->inbuf);
1274 cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1275 cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1276 cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1277 }
1278
1279 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1280 cli->use_spnego = False;
1281 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1282 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1283 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1284 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1285 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1286 cli->serverzone *= 60;
1287 /* this time is converted to GMT by make_unix_date */
1288 cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1289 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1290 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1291 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1292 } else {
1293 /* the old core protocol */
1294 cli->use_spnego = False;
1295 cli->sec_mode = 0;
1296 cli->serverzone = get_time_zone(time(NULL));
1297 }
1298
1299 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1300
1301 /* a way to force ascii SMB */
1302 if (getenv("CLI_FORCE_ASCII"))
1303 cli->capabilities &= ~CAP_UNICODE;
1304
1305 return True;
1306 }
1307
1308 /****************************************************************************
1309 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1310 ****************************************************************************/
1311
1312 BOOL cli_session_request(struct cli_state *cli,
1313 struct nmb_name *calling, struct nmb_name *called)
1314 {
1315 char *p;
1316 int len = 4;
1317
1318 memcpy(&(cli->calling), calling, sizeof(*calling));
1319 memcpy(&(cli->called ), called , sizeof(*called ));
1320
1321 /* put in the destination name */
1322 p = cli->outbuf+len;
1323 name_mangle(cli->called .name, p, cli->called .name_type);
1324 len += name_len(p);
1325
1326 /* and my name */
1327 p = cli->outbuf+len;
1328 name_mangle(cli->calling.name, p, cli->calling.name_type);
1329 len += name_len(p);
1330
1331 /* 445 doesn't have session request */
1332 if (cli->port == 445)
1333 return True;
1334
1335 /* send a session request (RFC 1002) */
1336 /* setup the packet length
1337 * Remove four bytes from the length count, since the length
1338 * field in the NBT Session Service header counts the number
1339 * of bytes which follow. The cli_send_smb() function knows
1340 * about this and accounts for those four bytes.
1341 * CRH.
1342 */
1343 len -= 4;
1344 _smb_setlen(cli->outbuf,len);
1345 SCVAL(cli->outbuf,0,0x81);
1346
1347 cli_send_smb(cli);
1348 DEBUG(5,("Sent session request\n"));
1349
1350 if (!cli_receive_smb(cli))
1351 return False;
1352
1353 if (CVAL(cli->inbuf,0) == 0x84) {
1354 /* C. Hoch 9/14/95 Start */
1355 /* For information, here is the response structure.
1356 * We do the byte-twiddling to for portability.
1357 struct RetargetResponse{
1358 unsigned char type;
1359 unsigned char flags;
1360 int16 length;
1361 int32 ip_addr;
1362 int16 port;
1363 };
1364 */
1365 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1366 /* SESSION RETARGET */
1367 putip((char *)&cli->dest_ip,cli->inbuf+4);
1368
1369 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1370 if (cli->fd == -1)
1371 return False;
1372
1373 DEBUG(3,("Retargeted\n"));
1374
1375 set_socket_options(cli->fd,user_socket_options);
1376
1377 /* Try again */
1378 {
1379 static int depth;
1380 BOOL ret;
1381 if (depth > 4) {
1382 DEBUG(0,("Retarget recursion - failing\n"));
1383 return False;
1384 }
1385 depth++;
1386 ret = cli_session_request(cli, calling, called);
1387 depth--;
1388 return ret;
1389 }
1390 } /* C. Hoch 9/14/95 End */
1391
1392 if (CVAL(cli->inbuf,0) != 0x82) {
1393 /* This is the wrong place to put the error... JRA. */
1394 cli->rap_error = CVAL(cli->inbuf,4);
1395 return False;
1396 }
1397 return(True);
1398 }
1399
1400 /****************************************************************************
1401 Open the client sockets.
1402 ****************************************************************************/
1403
1404 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1405 {
1406 int name_type = 0x20;
1407 char *p;
1408
1409 /* reasonable default hostname */
1410 if (!host) host = "*SMBSERVER";
1411
1412 fstrcpy(cli->desthost, host);
1413
1414 /* allow hostnames of the form NAME#xx and do a netbios lookup */
1415 if ((p = strchr(cli->desthost, '#'))) {
1416 name_type = strtol(p+1, NULL, 16);
1417 *p = 0;
1418 }
1419
1420 if (!ip || is_zero_ip(*ip)) {
1421 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1422 return False;
1423 }
1424 if (ip) *ip = cli->dest_ip;
1425 } else {
1426 cli->dest_ip = *ip;
1427 }
1428
1429 if (getenv("LIBSMB_PROG")) {
1430 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1431 } else {
1432 /* try 445 first, then 139 */
1433 int port = cli->port?cli->port:445;
1434 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1435 port, cli->timeout);
1436 if (cli->fd == -1 && cli->port == 0) {
1437 port = 139;
1438 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1439 port, cli->timeout);
1440 }
1441 if (cli->fd != -1)
1442 cli->port = port;
1443 }
1444 if (cli->fd == -1) {
1445 DEBUG(1,("Error connecting to %s (%s)\n",
1446 ip?inet_ntoa(*ip):host,strerror(errno)));
1447 return False;
1448 }
1449
1450 set_socket_options(cli->fd,user_socket_options);
1451
1452 return True;
1453 }
1454
1455 /**
1456 establishes a connection to after the negprot.
1457 @param output_cli A fully initialised cli structure, non-null only on success
1458 @param dest_host The netbios name of the remote host
1459 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1460 @param port (optional) The destination port (0 for default)
1461 @param retry BOOL. Did this connection fail with a retryable error ?
1462
1463 */
1464 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1465 const char *my_name,
1466 const char *dest_host,
1467 struct in_addr *dest_ip, int port,
1468 int signing_state, int flags,
1469 BOOL *retry)
1470 {
1471 NTSTATUS nt_status;
1472 struct nmb_name calling;
1473 struct nmb_name called;
1474 struct cli_state *cli;
1475 struct in_addr ip;
1476
1477 if (retry)
1478 *retry = False;
1479
1480 if (!my_name)
1481 my_name = global_myname();
1482
1483 if (!(cli = cli_initialise())) {
1484 return NT_STATUS_NO_MEMORY;
1485 }
1486
1487 make_nmb_name(&calling, my_name, 0x0);
1488 make_nmb_name(&called , dest_host, 0x20);
1489
1490 if (cli_set_port(cli, port) != port) {
1491 cli_shutdown(cli);
1492 return NT_STATUS_UNSUCCESSFUL;
1493 }
1494
1495 cli_set_timeout(cli, 10000); /* 10 seconds. */
1496
1497 if (dest_ip)
1498 ip = *dest_ip;
1499 else
1500 ZERO_STRUCT(ip);
1501
1502 again:
1503
1504 DEBUG(3,("Connecting to host=%s\n", dest_host));
1505
1506 if (!cli_connect(cli, dest_host, &ip)) {
1507 DEBUG(1,("cli_start_connection: failed to connect to %s (%s)\n",
1508 nmb_namestr(&called), inet_ntoa(ip)));
1509 cli_shutdown(cli);
1510 if (is_zero_ip(ip)) {
1511 return NT_STATUS_BAD_NETWORK_NAME;
1512 } else {
1513 return NT_STATUS_CONNECTION_REFUSED;
1514 }
1515 }
1516
1517 if (retry)
1518 *retry = True;
1519
1520 if (!cli_session_request(cli, &calling, &called)) {
1521 char *p;
1522 DEBUG(1,("session request to %s failed (%s)\n",
1523 called.name, cli_errstr(cli)));
1524 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1525 *p = 0;
1526 goto again;
1527 }
1528 if (strcmp(called.name, "*SMBSERVER")) {
1529 make_nmb_name(&called , "*SMBSERVER", 0x20);
1530 goto again;
1531 }
1532 return NT_STATUS_BAD_NETWORK_NAME;
1533 }
1534
1535 cli_setup_signing_state(cli, signing_state);
1536
1537 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1538 cli->use_spnego = False;
1539 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1540 cli->use_kerberos = True;
1541
1542 if (!cli_negprot(cli)) {
1543 DEBUG(1,("failed negprot\n"));
1544 nt_status = cli_nt_error(cli);
1545 if (NT_STATUS_IS_OK(nt_status)) {
1546 nt_status = NT_STATUS_UNSUCCESSFUL;
1547 }
1548 cli_shutdown(cli);
1549 return nt_status;
1550 }
1551
1552 *output_cli = cli;
1553 return NT_STATUS_OK;
1554 }
1555
1556
1557 /**
1558 establishes a connection right up to doing tconX, password specified.
1559 @param output_cli A fully initialised cli structure, non-null only on success
1560 @param dest_host The netbios name of the remote host
1561 @param dest_ip (optional) The the destination IP, NULL for name based lookup
1562 @param port (optional) The destination port (0 for default)
1563 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1564 @param service_type The 'type' of serivice.
1565 @param user Username, unix string
1566 @param domain User's domain
1567 @param password User's password, unencrypted unix string.
1568 @param retry BOOL. Did this connection fail with a retryable error ?
1569 */
1570
1571 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1572 const char *my_name,
1573 const char *dest_host,
1574 struct in_addr *dest_ip, int port,
1575 const char *service, const char *service_type,
1576 const char *user, const char *domain,
1577 const char *password, int flags,
1578 int signing_state,
1579 BOOL *retry)
1580 {
1581 NTSTATUS nt_status;
1582 struct cli_state *cli = NULL;
1583 int pw_len = password ? strlen(password)+1 : 0;
1584
1585 *output_cli = NULL;
1586
1587 if (password == NULL) {
1588 password = "";
1589 }
1590
1591 nt_status = cli_start_connection(&cli, my_name, dest_host,
1592 dest_ip, port, signing_state, flags, retry);
1593
1594 if (!NT_STATUS_IS_OK(nt_status)) {
1595 return nt_status;
1596 }
1597
1598 nt_status = cli_session_setup(cli, user, password, pw_len, password,
1599 pw_len, domain);
1600 if (!NT_STATUS_IS_OK(nt_status)) {
1601
1602 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1603 DEBUG(1,("failed session setup with %s\n",
1604 nt_errstr(nt_status)));
1605 cli_shutdown(cli);
1606 return nt_status;
1607 }
1608
1609 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1610 if (!NT_STATUS_IS_OK(nt_status)) {
1611 DEBUG(1,("anonymous failed session setup with %s\n",
1612 nt_errstr(nt_status)));
1613 cli_shutdown(cli);
1614 return nt_status;
1615 }
1616 }
1617
1618 if (service) {
1619 if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1620 nt_status = cli_nt_error(cli);
1621 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1622 cli_shutdown(cli);
1623 if (NT_STATUS_IS_OK(nt_status)) {
1624 nt_status = NT_STATUS_UNSUCCESSFUL;
1625 }
1626 return nt_status;
1627 }
1628 }
1629
1630 cli_init_creds(cli, user, domain, password);
1631
1632 *output_cli = cli;
1633 return NT_STATUS_OK;
1634 }
1635
1636 /****************************************************************************
1637 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1638 ****************************************************************************/
1639
1640 BOOL attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
1641 struct in_addr *pdest_ip)
1642 {
1643 struct nmb_name calling, called;
1644
1645 make_nmb_name(&calling, srchost, 0x0);
1646
1647 /*
1648 * If the called name is an IP address
1649 * then use *SMBSERVER immediately.
1650 */
1651
1652 if(is_ipaddress(desthost)) {
1653 make_nmb_name(&called, "*SMBSERVER", 0x20);
1654 } else {
1655 make_nmb_name(&called, desthost, 0x20);
1656 }
1657
1658 if (!cli_session_request(*ppcli, &calling, &called)) {
1659 struct nmb_name smbservername;
1660
1661 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1662
1663 /*
1664 * If the name wasn't *SMBSERVER then
1665 * try with *SMBSERVER if the first name fails.
1666 */
1667
1668 if (nmb_name_equal(&called, &smbservername)) {
1669
1670 /*
1671 * The name used was *SMBSERVER, don't bother with another name.
1672 */
1673
1674 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1675 with error %s.\n", desthost, cli_errstr(*ppcli) ));
1676 return False;
1677 }
1678
1679 /* Try again... */
1680 cli_shutdown(*ppcli);
1681
1682 *ppcli = cli_initialise();
1683 if (!*ppcli) {
1684 /* Out of memory... */
1685 return False;
1686 }
1687
1688 if (!cli_connect(*ppcli, desthost, pdest_ip) ||
1689 !cli_session_request(*ppcli, &calling, &smbservername)) {
1690 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1691 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
1692 return False;
1693 }
1694 }
1695
1696 return True;
1697 }
1698
1699
1700
1701
1702
1703 /****************************************************************************
1704 Send an old style tcon.
1705 ****************************************************************************/
1706 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1707 const char *service, const char *pass, const char *dev,
1708 uint16 *max_xmit, uint16 *tid)
1709 {
1710 char *p;
1711
1712 if (!lp_client_plaintext_auth() && (*pass)) {
1713 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1714 " is disabled\n"));
1715 return NT_STATUS_ACCESS_DENIED;
1716 }
1717
1718 memset(cli->outbuf,'\0',smb_size);
1719 memset(cli->inbuf,'\0',smb_size);
1720
1721 set_message(NULL,cli->outbuf, 0, 0, True);
1722 SCVAL(cli->outbuf,smb_com,SMBtcon);
1723 cli_setup_packet(cli);
1724
1725 p = smb_buf(cli->outbuf);
1726 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1727 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1728 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1729
1730 cli_setup_bcc(cli, p);
1731
1732 cli_send_smb(cli);
1733 if (!cli_receive_smb(cli)) {
1734 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1735 }
1736
1737 if (cli_is_error(cli)) {
1738 return cli_nt_error(cli);
1739 }
1740
1741 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1742 *tid = SVAL(cli->inbuf, smb_vwv1);
1743
1744 return NT_STATUS_OK;
1745 }
1746
1747 /* Return a cli_state pointing at the IPC$ share for the given server */
1748
1749 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1750 struct user_auth_info *user_info)
1751 {
1752 struct cli_state *cli;
1753 pstring myname;
1754 NTSTATUS nt_status;
1755
1756 get_myname(myname);
1757
1758 nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1759 user_info->username, lp_workgroup(), user_info->password,
1760 CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK, Undefined, NULL);
1761
1762 if (NT_STATUS_IS_OK(nt_status)) {
1763 return cli;
1764 } else if (is_ipaddress(server)) {
1765 /* windows 9* needs a correct NMB name for connections */
1766 fstring remote_name;
1767
1768 if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1769 cli = get_ipc_connect(remote_name, server_ip, user_info);
1770 if (cli)
1771 return cli;
1772 }
1773 }
1774 return NULL;
1775 }
1776
1777 /*
1778 * Given the IP address of a master browser on the network, return its
1779 * workgroup and connect to it.
1780 *
1781 * This function is provided to allow additional processing beyond what
1782 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1783 * browsers and obtain each master browsers' list of domains (in case the
1784 * first master browser is recently on the network and has not yet
1785 * synchronized with other master browsers and therefore does not yet have the
1786 * entire network browse list)
1787 */
1788
1789 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1790 {
1791 static fstring name;
1792 struct cli_state *cli;
1793 struct in_addr server_ip;
1794
1795 DEBUG(99, ("Looking up name of master browser %s\n",
1796 inet_ntoa(mb_ip->ip)));
1797
1798 /*
1799 * Do a name status query to find out the name of the master browser.
1800 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1801 * master browser will not respond to a wildcard query (or, at least,
1802 * an NT4 server acting as the domain master browser will not).
1803 *
1804 * We might be able to use ONLY the query on MSBROWSE, but that's not
1805 * yet been tested with all Windows versions, so until it is, leave
1806 * the original wildcard query as the first choice and fall back to
1807 * MSBROWSE if the wildcard query fails.
1808 */
1809 if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1810 !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1811
1812 DEBUG(99, ("Could not retrieve name status for %s\n",
1813 inet_ntoa(mb_ip->ip)));
1814 return NULL;
1815 }
1816
1817 if (!find_master_ip(name, &server_ip)) {
1818 DEBUG(99, ("Could not find master ip for %s\n", name));
1819 return NULL;
1820 }
1821
1822 pstrcpy(workgroup, name);
1823
1824 DEBUG(4, ("found master browser %s, %s\n",
1825 name, inet_ntoa(mb_ip->ip)));
1826
1827 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1828
1829 return cli;
1830
1831 }
1832
1833 /*
1834 * Return the IP address and workgroup of a master browser on the network, and
1835 * connect to it.
1836 */
1837
1838 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1839 {
1840 struct ip_service *ip_list;
1841 struct cli_state *cli;
1842 int i, count;
1843
1844 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1845
1846 /* Go looking for workgroups by broadcasting on the local network */
1847
1848 if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1849 DEBUG(99, ("No master browsers responded\n"));
1850 return False;
1851 }
1852
1853 for (i = 0; i < count; i++) {
1854 DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1855
1856 cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1857 if (cli)
1858 return(cli);
1859 }
1860
1861 return NULL;
1862 }