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s3: Explicitly handle inbuf in cli_sesssetup_blob_done
[Samba/kamenim.git] / source3 / libsmb / cliconnect.c
blob53d46be58502d0cdee362baeb60d314d01722d58
1 /*
2 Unix SMB/CIFS implementation.
3 client connect/disconnect routines
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Andrew Bartlett 2001-2003
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "includes.h"
22 #include "../libcli/auth/libcli_auth.h"
23 #include "../libcli/auth/spnego.h"
24 #include "smb_krb5.h"
25 #include "ntlmssp.h"
26
27 static const struct {
28 int prot;
29 const char name[24];
30 } prots[10] = {
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, "LANMAN2.1"},
38 {PROTOCOL_LANMAN2, "Samba"},
39 {PROTOCOL_NT1, "NT LANMAN 1.0"},
40 {PROTOCOL_NT1, "NT LM 0.12"},
41 };
42
43 #define STAR_SMBSERVER "*SMBSERVER"
44
45 /**
46 * Set the user session key for a connection
47 * @param cli The cli structure to add it too
48 * @param session_key The session key used. (A copy of this is taken for the cli struct)
49 *
50 */
51
52 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
53 {
54 cli->user_session_key = data_blob(session_key.data, session_key.length);
55 }
56
57 /****************************************************************************
58 Do an old lanman2 style session setup.
59 ****************************************************************************/
60
61 static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
62 const char *user,
63 const char *pass, size_t passlen,
64 const char *workgroup)
65 {
66 DATA_BLOB session_key = data_blob_null;
67 DATA_BLOB lm_response = data_blob_null;
68 NTSTATUS status;
69 fstring pword;
70 char *p;
71
72 if (passlen > sizeof(pword)-1) {
73 return NT_STATUS_INVALID_PARAMETER;
74 }
75
76 /* LANMAN servers predate NT status codes and Unicode and ignore those
77 smb flags so we must disable the corresponding default capabilities
78 that would otherwise cause the Unicode and NT Status flags to be
79 set (and even returned by the server) */
80
81 cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
82
83 /* if in share level security then don't send a password now */
84 if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
85 passlen = 0;
86
87 if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
88 /* Encrypted mode needed, and non encrypted password supplied. */
89 lm_response = data_blob(NULL, 24);
90 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
91 DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
92 return NT_STATUS_ACCESS_DENIED;
93 }
94 } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
95 /* Encrypted mode needed, and encrypted password supplied. */
96 lm_response = data_blob(pass, passlen);
97 } else if (passlen > 0) {
98 /* Plaintext mode needed, assume plaintext supplied. */
99 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
100 lm_response = data_blob(pass, passlen);
101 }
102
103 /* send a session setup command */
104 memset(cli->outbuf,'\0',smb_size);
105 cli_set_message(cli->outbuf,10, 0, True);
106 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
107 cli_setup_packet(cli);
108
109 SCVAL(cli->outbuf,smb_vwv0,0xFF);
110 SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
111 SSVAL(cli->outbuf,smb_vwv3,2);
112 SSVAL(cli->outbuf,smb_vwv4,1);
113 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
114 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
115
116 p = smb_buf(cli->outbuf);
117 memcpy(p,lm_response.data,lm_response.length);
118 p += lm_response.length;
119 p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
120 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
121 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
122 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
123 cli_setup_bcc(cli, p);
124
125 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
126 return cli_nt_error(cli);
127 }
128
129 show_msg(cli->inbuf);
130
131 if (cli_is_error(cli)) {
132 return cli_nt_error(cli);
133 }
134
135 /* use the returned vuid from now on */
136 cli->vuid = SVAL(cli->inbuf,smb_uid);
137 status = cli_set_username(cli, user);
138 if (!NT_STATUS_IS_OK(status)) {
139 return status;
140 }
141
142 if (session_key.data) {
143 /* Have plaintext orginal */
144 cli_set_session_key(cli, session_key);
145 }
146
147 return NT_STATUS_OK;
148 }
149
150 /****************************************************************************
151 Work out suitable capabilities to offer the server.
152 ****************************************************************************/
153
154 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
155 {
156 uint32 capabilities = CAP_NT_SMBS;
157
158 if (!cli->force_dos_errors)
159 capabilities |= CAP_STATUS32;
160
161 if (cli->use_level_II_oplocks)
162 capabilities |= CAP_LEVEL_II_OPLOCKS;
163
164 capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
165 return capabilities;
166 }
167
168 /****************************************************************************
169 Do a NT1 guest session setup.
170 ****************************************************************************/
171
172 struct cli_session_setup_guest_state {
173 struct cli_state *cli;
174 uint16_t vwv[16];
175 struct iovec bytes;
176 };
177
178 static void cli_session_setup_guest_done(struct tevent_req *subreq);
179
180 struct tevent_req *cli_session_setup_guest_create(TALLOC_CTX *mem_ctx,
181 struct event_context *ev,
182 struct cli_state *cli,
183 struct tevent_req **psmbreq)
184 {
185 struct tevent_req *req, *subreq;
186 struct cli_session_setup_guest_state *state;
187 uint16_t *vwv;
188 uint8_t *bytes;
189
190 req = tevent_req_create(mem_ctx, &state,
191 struct cli_session_setup_guest_state);
192 if (req == NULL) {
193 return NULL;
194 }
195 state->cli = cli;
196 vwv = state->vwv;
197
198 SCVAL(vwv+0, 0, 0xFF);
199 SCVAL(vwv+0, 1, 0);
200 SSVAL(vwv+1, 0, 0);
201 SSVAL(vwv+2, 0, CLI_BUFFER_SIZE);
202 SSVAL(vwv+3, 0, 2);
203 SSVAL(vwv+4, 0, cli->pid);
204 SIVAL(vwv+5, 0, cli->sesskey);
205 SSVAL(vwv+7, 0, 0);
206 SSVAL(vwv+8, 0, 0);
207 SSVAL(vwv+9, 0, 0);
208 SSVAL(vwv+10, 0, 0);
209 SIVAL(vwv+11, 0, cli_session_setup_capabilities(cli));
210
211 bytes = talloc_array(state, uint8_t, 0);
212
213 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "", 1, /* username */
214 NULL);
215 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "", 1, /* workgroup */
216 NULL);
217 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Unix", 5, NULL);
218 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Samba", 6, NULL);
219
220 if (bytes == NULL) {
221 TALLOC_FREE(req);
222 return NULL;
223 }
224
225 state->bytes.iov_base = (void *)bytes;
226 state->bytes.iov_len = talloc_get_size(bytes);
227
228 subreq = cli_smb_req_create(state, ev, cli, SMBsesssetupX, 0, 13, vwv,
229 1, &state->bytes);
230 if (subreq == NULL) {
231 TALLOC_FREE(req);
232 return NULL;
233 }
234 tevent_req_set_callback(subreq, cli_session_setup_guest_done, req);
235 *psmbreq = subreq;
236 return req;
237 }
238
239 struct tevent_req *cli_session_setup_guest_send(TALLOC_CTX *mem_ctx,
240 struct event_context *ev,
241 struct cli_state *cli)
242 {
243 struct tevent_req *req, *subreq;
244 NTSTATUS status;
245
246 req = cli_session_setup_guest_create(mem_ctx, ev, cli, &subreq);
247 if (req == NULL) {
248 return NULL;
249 }
250
251 status = cli_smb_req_send(subreq);
252 if (NT_STATUS_IS_OK(status)) {
253 tevent_req_nterror(req, status);
254 return tevent_req_post(req, ev);
255 }
256 return req;
257 }
258
259 static void cli_session_setup_guest_done(struct tevent_req *subreq)
260 {
261 struct tevent_req *req = tevent_req_callback_data(
262 subreq, struct tevent_req);
263 struct cli_session_setup_guest_state *state = tevent_req_data(
264 req, struct cli_session_setup_guest_state);
265 struct cli_state *cli = state->cli;
266 uint32_t num_bytes;
267 uint8_t *in;
268 char *inbuf;
269 uint8_t *bytes;
270 uint8_t *p;
271 NTSTATUS status;
272
273 status = cli_smb_recv(subreq, state, &in, 0, NULL, NULL,
274 &num_bytes, &bytes);
275 TALLOC_FREE(subreq);
276 if (!NT_STATUS_IS_OK(status)) {
277 tevent_req_nterror(req, status);
278 return;
279 }
280
281 inbuf = (char *)in;
282 p = bytes;
283
284 cli->vuid = SVAL(inbuf, smb_uid);
285
286 p += clistr_pull(inbuf, cli->server_os, (char *)p, sizeof(fstring),
287 bytes+num_bytes-p, STR_TERMINATE);
288 p += clistr_pull(inbuf, cli->server_type, (char *)p, sizeof(fstring),
289 bytes+num_bytes-p, STR_TERMINATE);
290 p += clistr_pull(inbuf, cli->server_domain, (char *)p, sizeof(fstring),
291 bytes+num_bytes-p, STR_TERMINATE);
292
293 if (strstr(cli->server_type, "Samba")) {
294 cli->is_samba = True;
295 }
296
297 status = cli_set_username(cli, "");
298 if (!NT_STATUS_IS_OK(status)) {
299 tevent_req_nterror(req, status);
300 return;
301 }
302 tevent_req_done(req);
303 }
304
305 NTSTATUS cli_session_setup_guest_recv(struct tevent_req *req)
306 {
307 return tevent_req_simple_recv_ntstatus(req);
308 }
309
310 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
311 {
312 TALLOC_CTX *frame = talloc_stackframe();
313 struct event_context *ev;
314 struct tevent_req *req;
315 NTSTATUS status = NT_STATUS_OK;
316
317 if (cli_has_async_calls(cli)) {
318 /*
319 * Can't use sync call while an async call is in flight
320 */
321 status = NT_STATUS_INVALID_PARAMETER;
322 goto fail;
323 }
324
325 ev = event_context_init(frame);
326 if (ev == NULL) {
327 status = NT_STATUS_NO_MEMORY;
328 goto fail;
329 }
330
331 req = cli_session_setup_guest_send(frame, ev, cli);
332 if (req == NULL) {
333 status = NT_STATUS_NO_MEMORY;
334 goto fail;
335 }
336
337 if (!tevent_req_poll(req, ev)) {
338 status = map_nt_error_from_unix(errno);
339 goto fail;
340 }
341
342 status = cli_session_setup_guest_recv(req);
343 fail:
344 TALLOC_FREE(frame);
345 if (!NT_STATUS_IS_OK(status)) {
346 cli_set_error(cli, status);
347 }
348 return status;
349 }
350
351 /****************************************************************************
352 Do a NT1 plaintext session setup.
353 ****************************************************************************/
354
355 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
356 const char *user, const char *pass,
357 const char *workgroup)
358 {
359 uint32 capabilities = cli_session_setup_capabilities(cli);
360 char *p;
361 NTSTATUS status;
362 fstring lanman;
363
364 fstr_sprintf( lanman, "Samba %s", samba_version_string());
365
366 memset(cli->outbuf, '\0', smb_size);
367 cli_set_message(cli->outbuf,13,0,True);
368 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
369 cli_setup_packet(cli);
370
371 SCVAL(cli->outbuf,smb_vwv0,0xFF);
372 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
373 SSVAL(cli->outbuf,smb_vwv3,2);
374 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
375 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
376 SSVAL(cli->outbuf,smb_vwv8,0);
377 SIVAL(cli->outbuf,smb_vwv11,capabilities);
378 p = smb_buf(cli->outbuf);
379
380 /* check wether to send the ASCII or UNICODE version of the password */
381
382 if ( (capabilities & CAP_UNICODE) == 0 ) {
383 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
384 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
385 }
386 else {
387 /* For ucs2 passwords clistr_push calls ucs2_align, which causes
388 * the space taken by the unicode password to be one byte too
389 * long (as we're on an odd byte boundary here). Reduce the
390 * count by 1 to cope with this. Fixes smbclient against NetApp
391 * servers which can't cope. Fix from
392 * bryan.kolodziej@allenlund.com in bug #3840.
393 */
394 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
395 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf))-1);
396 }
397
398 p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
399 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
400 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
401 p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
402 cli_setup_bcc(cli, p);
403
404 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
405 return cli_nt_error(cli);
406 }
407
408 show_msg(cli->inbuf);
409
410 if (cli_is_error(cli)) {
411 return cli_nt_error(cli);
412 }
413
414 cli->vuid = SVAL(cli->inbuf,smb_uid);
415 p = smb_buf(cli->inbuf);
416 p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
417 -1, STR_TERMINATE);
418 p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
419 -1, STR_TERMINATE);
420 p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
421 -1, STR_TERMINATE);
422 status = cli_set_username(cli, user);
423 if (!NT_STATUS_IS_OK(status)) {
424 return status;
425 }
426 if (strstr(cli->server_type, "Samba")) {
427 cli->is_samba = True;
428 }
429
430 return NT_STATUS_OK;
431 }
432
433 /****************************************************************************
434 do a NT1 NTLM/LM encrypted session setup - for when extended security
435 is not negotiated.
436 @param cli client state to create do session setup on
437 @param user username
438 @param pass *either* cleartext password (passlen !=24) or LM response.
439 @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
440 @param workgroup The user's domain.
441 ****************************************************************************/
442
443 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
444 const char *pass, size_t passlen,
445 const char *ntpass, size_t ntpasslen,
446 const char *workgroup)
447 {
448 uint32 capabilities = cli_session_setup_capabilities(cli);
449 DATA_BLOB lm_response = data_blob_null;
450 DATA_BLOB nt_response = data_blob_null;
451 DATA_BLOB session_key = data_blob_null;
452 NTSTATUS result;
453 char *p;
454 bool ok;
455
456 if (passlen == 0) {
457 /* do nothing - guest login */
458 } else if (passlen != 24) {
459 if (lp_client_ntlmv2_auth()) {
460 DATA_BLOB server_chal;
461 DATA_BLOB names_blob;
462 server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
463
464 /* note that the 'workgroup' here is a best guess - we don't know
465 the server's domain at this point. The 'server name' is also
466 dodgy...
467 */
468 names_blob = NTLMv2_generate_names_blob(NULL, cli->called.name, workgroup);
469
470 if (!SMBNTLMv2encrypt(NULL, user, workgroup, pass, &server_chal,
471 &names_blob,
472 &lm_response, &nt_response, NULL, &session_key)) {
473 data_blob_free(&names_blob);
474 data_blob_free(&server_chal);
475 return NT_STATUS_ACCESS_DENIED;
476 }
477 data_blob_free(&names_blob);
478 data_blob_free(&server_chal);
479
480 } else {
481 uchar nt_hash[16];
482 E_md4hash(pass, nt_hash);
483
484 #ifdef LANMAN_ONLY
485 nt_response = data_blob_null;
486 #else
487 nt_response = data_blob(NULL, 24);
488 SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
489 #endif
490 /* non encrypted password supplied. Ignore ntpass. */
491 if (lp_client_lanman_auth()) {
492 lm_response = data_blob(NULL, 24);
493 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
494 /* Oops, the LM response is invalid, just put
495 the NT response there instead */
496 data_blob_free(&lm_response);
497 lm_response = data_blob(nt_response.data, nt_response.length);
498 }
499 } else {
500 /* LM disabled, place NT# in LM field instead */
501 lm_response = data_blob(nt_response.data, nt_response.length);
502 }
503
504 session_key = data_blob(NULL, 16);
505 #ifdef LANMAN_ONLY
506 E_deshash(pass, session_key.data);
507 memset(&session_key.data[8], '\0', 8);
508 #else
509 SMBsesskeygen_ntv1(nt_hash, session_key.data);
510 #endif
511 }
512 cli_temp_set_signing(cli);
513 } else {
514 /* pre-encrypted password supplied. Only used for
515 security=server, can't do
516 signing because we don't have original key */
517
518 lm_response = data_blob(pass, passlen);
519 nt_response = data_blob(ntpass, ntpasslen);
520 }
521
522 /* send a session setup command */
523 memset(cli->outbuf,'\0',smb_size);
524
525 cli_set_message(cli->outbuf,13,0,True);
526 SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
527 cli_setup_packet(cli);
528
529 SCVAL(cli->outbuf,smb_vwv0,0xFF);
530 SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
531 SSVAL(cli->outbuf,smb_vwv3,2);
532 SSVAL(cli->outbuf,smb_vwv4,cli->pid);
533 SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
534 SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
535 SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
536 SIVAL(cli->outbuf,smb_vwv11,capabilities);
537 p = smb_buf(cli->outbuf);
538 if (lm_response.length) {
539 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
540 }
541 if (nt_response.length) {
542 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
543 }
544 p += clistr_push(cli, p, user, -1, STR_TERMINATE);
545
546 /* Upper case here might help some NTLMv2 implementations */
547 p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
548 p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
549 p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
550 cli_setup_bcc(cli, p);
551
552 if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
553 result = cli_nt_error(cli);
554 goto end;
555 }
556
557 /* show_msg(cli->inbuf); */
558
559 if (cli_is_error(cli)) {
560 result = cli_nt_error(cli);
561 goto end;
562 }
563
564 #ifdef LANMAN_ONLY
565 ok = cli_simple_set_signing(cli, session_key, lm_response);
566 #else
567 ok = cli_simple_set_signing(cli, session_key, nt_response);
568 #endif
569 if (ok) {
570 if (!cli_check_sign_mac(cli, cli->inbuf, 1)) {
571 result = NT_STATUS_ACCESS_DENIED;
572 goto end;
573 }
574 }
575
576 /* use the returned vuid from now on */
577 cli->vuid = SVAL(cli->inbuf,smb_uid);
578
579 p = smb_buf(cli->inbuf);
580 p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
581 -1, STR_TERMINATE);
582 p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
583 -1, STR_TERMINATE);
584 p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
585 -1, STR_TERMINATE);
586
587 if (strstr(cli->server_type, "Samba")) {
588 cli->is_samba = True;
589 }
590
591 result = cli_set_username(cli, user);
592 if (!NT_STATUS_IS_OK(result)) {
593 goto end;
594 }
595
596 if (session_key.data) {
597 /* Have plaintext orginal */
598 cli_set_session_key(cli, session_key);
599 }
600
601 result = NT_STATUS_OK;
602 end:
603 data_blob_free(&lm_response);
604 data_blob_free(&nt_response);
605 data_blob_free(&session_key);
606 return result;
607 }
608
609 /* The following is calculated from :
610 * (smb_size-4) = 35
611 * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
612 * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
613 * end of packet.
614 */
615
616 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
617
618 struct cli_sesssetup_blob_state {
619 struct tevent_context *ev;
620 struct cli_state *cli;
621 DATA_BLOB blob;
622 uint16_t max_blob_size;
623 uint16_t vwv[12];
624 uint8_t *buf;
625
626 NTSTATUS status;
627 char *inbuf;
628 DATA_BLOB ret_blob;
629 };
630
631 static bool cli_sesssetup_blob_next(struct cli_sesssetup_blob_state *state,
632 struct tevent_req **psubreq);
633 static void cli_sesssetup_blob_done(struct tevent_req *subreq);
634
635 static struct tevent_req *cli_sesssetup_blob_send(TALLOC_CTX *mem_ctx,
636 struct tevent_context *ev,
637 struct cli_state *cli,
638 DATA_BLOB blob)
639 {
640 struct tevent_req *req, *subreq;
641 struct cli_sesssetup_blob_state *state;
642
643 req = tevent_req_create(mem_ctx, &state,
644 struct cli_sesssetup_blob_state);
645 if (req == NULL) {
646 return NULL;
647 }
648 state->ev = ev;
649 state->blob = blob;
650 state->cli = cli;
651
652 if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
653 DEBUG(1, ("cli_session_setup_blob: cli->max_xmit too small "
654 "(was %u, need minimum %u)\n",
655 (unsigned int)cli->max_xmit,
656 BASE_SESSSETUP_BLOB_PACKET_SIZE));
657 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
658 return tevent_req_post(req, ev);
659 }
660 state->max_blob_size =
661 MIN(cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE, 0xFFFF);
662
663 if (!cli_sesssetup_blob_next(state, &subreq)) {
664 tevent_req_nomem(NULL, req);
665 return tevent_req_post(req, ev);
666 }
667 tevent_req_set_callback(subreq, cli_sesssetup_blob_done, req);
668 return req;
669 }
670
671 static bool cli_sesssetup_blob_next(struct cli_sesssetup_blob_state *state,
672 struct tevent_req **psubreq)
673 {
674 struct tevent_req *subreq;
675 uint16_t thistime;
676
677 SCVAL(state->vwv+0, 0, 0xFF);
678 SCVAL(state->vwv+0, 1, 0);
679 SSVAL(state->vwv+1, 0, 0);
680 SSVAL(state->vwv+2, 0, CLI_BUFFER_SIZE);
681 SSVAL(state->vwv+3, 0, 2);
682 SSVAL(state->vwv+4, 0, 1);
683 SIVAL(state->vwv+5, 0, 0);
684
685 thistime = MIN(state->blob.length, state->max_blob_size);
686 SSVAL(state->vwv+7, 0, thistime);
687
688 SSVAL(state->vwv+8, 0, 0);
689 SSVAL(state->vwv+9, 0, 0);
690 SIVAL(state->vwv+10, 0,
691 cli_session_setup_capabilities(state->cli)
692 | CAP_EXTENDED_SECURITY);
693
694 state->buf = (uint8_t *)talloc_memdup(state, state->blob.data,
695 thistime);
696 if (state->buf == NULL) {
697 return false;
698 }
699 state->blob.data += thistime;
700 state->blob.length -= thistime;
701
702 state->buf = smb_bytes_push_str(state->buf, cli_ucs2(state->cli),
703 "Unix", 5, NULL);
704 state->buf = smb_bytes_push_str(state->buf, cli_ucs2(state->cli),
705 "Samba", 6, NULL);
706 if (state->buf == NULL) {
707 return false;
708 }
709 subreq = cli_smb_send(state, state->ev, state->cli, SMBsesssetupX, 0,
710 12, state->vwv,
711 talloc_get_size(state->buf), state->buf);
712 if (subreq == NULL) {
713 return false;
714 }
715 *psubreq = subreq;
716 return true;
717 }
718
719 static void cli_sesssetup_blob_done(struct tevent_req *subreq)
720 {
721 struct tevent_req *req = tevent_req_callback_data(
722 subreq, struct tevent_req);
723 struct cli_sesssetup_blob_state *state = tevent_req_data(
724 req, struct cli_sesssetup_blob_state);
725 struct cli_state *cli = state->cli;
726 uint8_t wct;
727 uint16_t *vwv;
728 uint32_t num_bytes;
729 uint8_t *bytes;
730 NTSTATUS status;
731 uint8_t *p;
732 uint16_t blob_length;
733 uint8_t *inbuf;
734
735 status = cli_smb_recv(subreq, state, &inbuf, 1, &wct, &vwv,
736 &num_bytes, &bytes);
737 TALLOC_FREE(subreq);
738 if (!NT_STATUS_IS_OK(status)
739 && !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
740 tevent_req_nterror(req, status);
741 return;
742 }
743
744 state->status = status;
745 TALLOC_FREE(state->buf);
746
747 state->inbuf = (char *)inbuf;
748 cli->vuid = SVAL(state->inbuf, smb_uid);
749
750 blob_length = SVAL(vwv+3, 0);
751 if (blob_length > num_bytes) {
752 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
753 return;
754 }
755 state->ret_blob = data_blob_const(bytes, blob_length);
756
757 p = bytes + blob_length;
758
759 p += clistr_pull(state->inbuf, cli->server_os,
760 (char *)p, sizeof(fstring),
761 bytes+num_bytes-p, STR_TERMINATE);
762 p += clistr_pull(state->inbuf, cli->server_type,
763 (char *)p, sizeof(fstring),
764 bytes+num_bytes-p, STR_TERMINATE);
765 p += clistr_pull(state->inbuf, cli->server_domain,
766 (char *)p, sizeof(fstring),
767 bytes+num_bytes-p, STR_TERMINATE);
768
769 if (strstr(cli->server_type, "Samba")) {
770 cli->is_samba = True;
771 }
772
773 if (state->blob.length != 0) {
774 /*
775 * More to send
776 */
777 if (!cli_sesssetup_blob_next(state, &subreq)) {
778 tevent_req_nomem(NULL, req);
779 return;
780 }
781 tevent_req_set_callback(subreq, cli_sesssetup_blob_done, req);
782 return;
783 }
784 tevent_req_done(req);
785 }
786
787 static NTSTATUS cli_sesssetup_blob_recv(struct tevent_req *req,
788 TALLOC_CTX *mem_ctx,
789 DATA_BLOB *pblob,
790 char **pinbuf)
791 {
792 struct cli_sesssetup_blob_state *state = tevent_req_data(
793 req, struct cli_sesssetup_blob_state);
794 NTSTATUS status;
795 char *inbuf;
796
797 if (tevent_req_is_nterror(req, &status)) {
798 state->cli->vuid = 0;
799 return status;
800 }
801
802 inbuf = talloc_move(mem_ctx, &state->inbuf);
803 if (pblob != NULL) {
804 *pblob = state->ret_blob;
805 }
806 if (pinbuf != NULL) {
807 *pinbuf = inbuf;
808 }
809 /* could be NT_STATUS_MORE_PROCESSING_REQUIRED */
810 return state->status;
811 }
812
813 #ifdef HAVE_KRB5
814
815 /****************************************************************************
816 Use in-memory credentials cache
817 ****************************************************************************/
818
819 static void use_in_memory_ccache(void) {
820 setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
821 }
822
823 /****************************************************************************
824 Do a spnego/kerberos encrypted session setup.
825 ****************************************************************************/
826
827 struct cli_session_setup_kerberos_state {
828 struct cli_state *cli;
829 DATA_BLOB negTokenTarg;
830 DATA_BLOB session_key_krb5;
831 ADS_STATUS ads_status;
832 };
833
834 static void cli_session_setup_kerberos_done(struct tevent_req *subreq);
835
836 static struct tevent_req *cli_session_setup_kerberos_send(
837 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
838 const char *principal, const char *workgroup)
839 {
840 struct tevent_req *req, *subreq;
841 struct cli_session_setup_kerberos_state *state;
842 int rc;
843
844 DEBUG(2,("Doing kerberos session setup\n"));
845
846 req = tevent_req_create(mem_ctx, &state,
847 struct cli_session_setup_kerberos_state);
848 if (req == NULL) {
849 return NULL;
850 }
851 state->cli = cli;
852 state->ads_status = ADS_SUCCESS;
853
854 cli_temp_set_signing(cli);
855
856 /*
857 * Ok, this is cheated: spnego_gen_negTokenTarg can block if
858 * we have to acquire a ticket. To be fixed later :-)
859 */
860 rc = spnego_gen_negTokenTarg(principal, 0, &state->negTokenTarg,
861 &state->session_key_krb5, 0, NULL);
862 if (rc) {
863 DEBUG(1, ("cli_session_setup_kerberos: "
864 "spnego_gen_negTokenTarg failed: %s\n",
865 error_message(rc)));
866 state->ads_status = ADS_ERROR_KRB5(rc);
867 tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
868 return tevent_req_post(req, ev);
869 }
870
871 #if 0
872 file_save("negTokenTarg.dat", state->negTokenTarg.data,
873 state->negTokenTarg.length);
874 #endif
875
876 subreq = cli_sesssetup_blob_send(state, ev, cli, state->negTokenTarg);
877 if (tevent_req_nomem(subreq, req)) {
878 return tevent_req_post(req, ev);
879 }
880 tevent_req_set_callback(subreq, cli_session_setup_kerberos_done, req);
881 return req;
882 }
883
884 static void cli_session_setup_kerberos_done(struct tevent_req *subreq)
885 {
886 struct tevent_req *req = tevent_req_callback_data(
887 subreq, struct tevent_req);
888 struct cli_session_setup_kerberos_state *state = tevent_req_data(
889 req, struct cli_session_setup_kerberos_state);
890 char *inbuf = NULL;
891 NTSTATUS status;
892
893 status = cli_sesssetup_blob_recv(subreq, talloc_tos(), NULL, &inbuf);
894 if (!NT_STATUS_IS_OK(status)) {
895 TALLOC_FREE(subreq);
896 tevent_req_nterror(req, status);
897 return;
898 }
899
900 cli_set_session_key(state->cli, state->session_key_krb5);
901
902 if (cli_simple_set_signing(state->cli, state->session_key_krb5,
903 data_blob_null)
904 && !cli_check_sign_mac(state->cli, inbuf, 1)) {
905 TALLOC_FREE(subreq);
906 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
907 return;
908 }
909 TALLOC_FREE(subreq);
910 tevent_req_done(req);
911 }
912
913 static ADS_STATUS cli_session_setup_kerberos_recv(struct tevent_req *req)
914 {
915 struct cli_session_setup_kerberos_state *state = tevent_req_data(
916 req, struct cli_session_setup_kerberos_state);
917 NTSTATUS status;
918
919 if (tevent_req_is_nterror(req, &status)) {
920 return ADS_ERROR_NT(status);
921 }
922 return state->ads_status;
923 }
924
925 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli,
926 const char *principal,
927 const char *workgroup)
928 {
929 struct tevent_context *ev;
930 struct tevent_req *req;
931 ADS_STATUS status = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
932
933 if (cli_has_async_calls(cli)) {
934 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
935 }
936 ev = tevent_context_init(talloc_tos());
937 if (ev == NULL) {
938 goto fail;
939 }
940 req = cli_session_setup_kerberos_send(ev, ev, cli, principal,
941 workgroup);
942 if (req == NULL) {
943 goto fail;
944 }
945 if (!tevent_req_poll(req, ev)) {
946 status = ADS_ERROR_SYSTEM(errno);
947 goto fail;
948 }
949 status = cli_session_setup_kerberos_recv(req);
950 fail:
951 TALLOC_FREE(ev);
952 return status;
953 }
954 #endif /* HAVE_KRB5 */
955
956 /****************************************************************************
957 Do a spnego/NTLMSSP encrypted session setup.
958 ****************************************************************************/
959
960 struct cli_session_setup_ntlmssp_state {
961 struct tevent_context *ev;
962 struct cli_state *cli;
963 struct ntlmssp_state *ntlmssp_state;
964 int turn;
965 DATA_BLOB blob_out;
966 };
967
968 static int cli_session_setup_ntlmssp_state_destructor(
969 struct cli_session_setup_ntlmssp_state *state)
970 {
971 if (state->ntlmssp_state != NULL) {
972 ntlmssp_end(&state->ntlmssp_state);
973 }
974 return 0;
975 }
976
977 static void cli_session_setup_ntlmssp_done(struct tevent_req *req);
978
979 static struct tevent_req *cli_session_setup_ntlmssp_send(
980 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
981 const char *user, const char *pass, const char *domain)
982 {
983 struct tevent_req *req, *subreq;
984 struct cli_session_setup_ntlmssp_state *state;
985 NTSTATUS status;
986 DATA_BLOB blob_out;
987
988 req = tevent_req_create(mem_ctx, &state,
989 struct cli_session_setup_ntlmssp_state);
990 if (req == NULL) {
991 return NULL;
992 }
993 state->ev = ev;
994 state->cli = cli;
995 state->turn = 1;
996
997 state->ntlmssp_state = NULL;
998 talloc_set_destructor(
999 state, cli_session_setup_ntlmssp_state_destructor);
1000
1001 cli_temp_set_signing(cli);
1002
1003 status = ntlmssp_client_start(&state->ntlmssp_state);
1004 if (!NT_STATUS_IS_OK(status)) {
1005 goto fail;
1006 }
1007 ntlmssp_want_feature(state->ntlmssp_state,
1008 NTLMSSP_FEATURE_SESSION_KEY);
1009 if (cli->use_ccache) {
1010 ntlmssp_want_feature(state->ntlmssp_state,
1011 NTLMSSP_FEATURE_CCACHE);
1012 }
1013 status = ntlmssp_set_username(state->ntlmssp_state, user);
1014 if (!NT_STATUS_IS_OK(status)) {
1015 goto fail;
1016 }
1017 status = ntlmssp_set_domain(state->ntlmssp_state, domain);
1018 if (!NT_STATUS_IS_OK(status)) {
1019 goto fail;
1020 }
1021 status = ntlmssp_set_password(state->ntlmssp_state, pass);
1022 if (!NT_STATUS_IS_OK(status)) {
1023 goto fail;
1024 }
1025 status = ntlmssp_update(state->ntlmssp_state, data_blob_null,
1026 &blob_out);
1027 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1028 goto fail;
1029 }
1030
1031 state->blob_out = gen_negTokenInit(OID_NTLMSSP, blob_out);
1032 data_blob_free(&blob_out);
1033
1034 subreq = cli_sesssetup_blob_send(state, ev, cli, state->blob_out);
1035 if (tevent_req_nomem(subreq, req)) {
1036 return tevent_req_post(req, ev);
1037 }
1038 tevent_req_set_callback(subreq, cli_session_setup_ntlmssp_done, req);
1039 return req;
1040 fail:
1041 tevent_req_nterror(req, status);
1042 return tevent_req_post(req, ev);
1043 }
1044
1045 static void cli_session_setup_ntlmssp_done(struct tevent_req *subreq)
1046 {
1047 struct tevent_req *req = tevent_req_callback_data(
1048 subreq, struct tevent_req);
1049 struct cli_session_setup_ntlmssp_state *state = tevent_req_data(
1050 req, struct cli_session_setup_ntlmssp_state);
1051 DATA_BLOB blob_in, msg_in, blob_out;
1052 char *inbuf = NULL;
1053 bool parse_ret;
1054 NTSTATUS status;
1055
1056 status = cli_sesssetup_blob_recv(subreq, talloc_tos(), &blob_in,
1057 &inbuf);
1058 TALLOC_FREE(subreq);
1059 data_blob_free(&state->blob_out);
1060
1061 if (NT_STATUS_IS_OK(status)) {
1062 if (state->cli->server_domain[0] == '\0') {
1063 fstrcpy(state->cli->server_domain,
1064 state->ntlmssp_state->server_domain);
1065 }
1066 cli_set_session_key(
1067 state->cli, state->ntlmssp_state->session_key);
1068
1069 if (cli_simple_set_signing(
1070 state->cli, state->ntlmssp_state->session_key,
1071 data_blob_null)
1072 && !cli_check_sign_mac(state->cli, inbuf, 1)) {
1073 TALLOC_FREE(subreq);
1074 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1075 return;
1076 }
1077 TALLOC_FREE(subreq);
1078 ntlmssp_end(&state->ntlmssp_state);
1079 tevent_req_done(req);
1080 return;
1081 }
1082 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1083 tevent_req_nterror(req, status);
1084 return;
1085 }
1086
1087 if (blob_in.length == 0) {
1088 tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
1089 return;
1090 }
1091
1092 if ((state->turn == 1)
1093 && NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1094 DATA_BLOB tmp_blob = data_blob_null;
1095 /* the server might give us back two challenges */
1096 parse_ret = spnego_parse_challenge(blob_in, &msg_in,
1097 &tmp_blob);
1098 data_blob_free(&tmp_blob);
1099 } else {
1100 parse_ret = spnego_parse_auth_response(blob_in, status,
1101 OID_NTLMSSP, &msg_in);
1102 }
1103 state->turn += 1;
1104
1105 if (!parse_ret) {
1106 DEBUG(3,("Failed to parse auth response\n"));
1107 if (NT_STATUS_IS_OK(status)
1108 || NT_STATUS_EQUAL(status,
1109 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1110 tevent_req_nterror(
1111 req, NT_STATUS_INVALID_NETWORK_RESPONSE);
1112 return;
1113 }
1114 }
1115
1116 status = ntlmssp_update(state->ntlmssp_state, msg_in, &blob_out);
1117
1118 if (!NT_STATUS_IS_OK(status)
1119 && !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1120 TALLOC_FREE(subreq);
1121 ntlmssp_end(&state->ntlmssp_state);
1122 tevent_req_nterror(req, status);
1123 return;
1124 }
1125
1126 state->blob_out = spnego_gen_auth(blob_out);
1127 TALLOC_FREE(subreq);
1128 if (tevent_req_nomem(state->blob_out.data, req)) {
1129 return;
1130 }
1131
1132 subreq = cli_sesssetup_blob_send(state, state->ev, state->cli,
1133 state->blob_out);
1134 if (tevent_req_nomem(subreq, req)) {
1135 return;
1136 }
1137 tevent_req_set_callback(subreq, cli_session_setup_ntlmssp_done, req);
1138 }
1139
1140 static NTSTATUS cli_session_setup_ntlmssp_recv(struct tevent_req *req)
1141 {
1142 struct cli_session_setup_ntlmssp_state *state = tevent_req_data(
1143 req, struct cli_session_setup_ntlmssp_state);
1144 NTSTATUS status;
1145
1146 if (tevent_req_is_nterror(req, &status)) {
1147 state->cli->vuid = 0;
1148 return status;
1149 }
1150 return NT_STATUS_OK;
1151 }
1152
1153 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli,
1154 const char *user,
1155 const char *pass,
1156 const char *domain)
1157 {
1158 struct tevent_context *ev;
1159 struct tevent_req *req;
1160 NTSTATUS status = NT_STATUS_NO_MEMORY;
1161
1162 if (cli_has_async_calls(cli)) {
1163 return NT_STATUS_INVALID_PARAMETER;
1164 }
1165 ev = tevent_context_init(talloc_tos());
1166 if (ev == NULL) {
1167 goto fail;
1168 }
1169 req = cli_session_setup_ntlmssp_send(ev, ev, cli, user, pass, domain);
1170 if (req == NULL) {
1171 goto fail;
1172 }
1173 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1174 goto fail;
1175 }
1176 status = cli_session_setup_ntlmssp_recv(req);
1177 fail:
1178 TALLOC_FREE(ev);
1179 if (!NT_STATUS_IS_OK(status)) {
1180 cli_set_error(cli, status);
1181 }
1182 return status;
1183 }
1184
1185 /****************************************************************************
1186 Do a spnego encrypted session setup.
1187
1188 user_domain: The shortname of the domain the user/machine is a member of.
1189 dest_realm: The realm we're connecting to, if NULL we use our default realm.
1190 ****************************************************************************/
1191
1192 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
1193 const char *pass, const char *user_domain,
1194 const char * dest_realm)
1195 {
1196 char *principal = NULL;
1197 char *OIDs[ASN1_MAX_OIDS];
1198 int i;
1199 DATA_BLOB blob;
1200 const char *p = NULL;
1201 char *account = NULL;
1202 NTSTATUS status;
1203
1204 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
1205
1206 /* the server might not even do spnego */
1207 if (cli->secblob.length <= 16) {
1208 DEBUG(3,("server didn't supply a full spnego negprot\n"));
1209 goto ntlmssp;
1210 }
1211
1212 #if 0
1213 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
1214 #endif
1215
1216 /* there is 16 bytes of GUID before the real spnego packet starts */
1217 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
1218
1219 /* The server sent us the first part of the SPNEGO exchange in the
1220 * negprot reply. It is WRONG to depend on the principal sent in the
1221 * negprot reply, but right now we do it. If we don't receive one,
1222 * we try to best guess, then fall back to NTLM. */
1223 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
1224 data_blob_free(&blob);
1225 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
1226 }
1227 data_blob_free(&blob);
1228
1229 /* make sure the server understands kerberos */
1230 for (i=0;OIDs[i];i++) {
1231 if (i == 0)
1232 DEBUG(3,("got OID=%s\n", OIDs[i]));
1233 else
1234 DEBUGADD(3,("got OID=%s\n", OIDs[i]));
1235 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
1236 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
1237 cli->got_kerberos_mechanism = True;
1238 }
1239 talloc_free(OIDs[i]);
1240 }
1241
1242 DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
1243
1244 status = cli_set_username(cli, user);
1245 if (!NT_STATUS_IS_OK(status)) {
1246 return ADS_ERROR_NT(status);
1247 }
1248
1249 #ifdef HAVE_KRB5
1250 /* If password is set we reauthenticate to kerberos server
1251 * and do not store results */
1252
1253 if (cli->got_kerberos_mechanism && cli->use_kerberos) {
1254 ADS_STATUS rc;
1255
1256 if (pass && *pass) {
1257 int ret;
1258
1259 use_in_memory_ccache();
1260 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
1261
1262 if (ret){
1263 TALLOC_FREE(principal);
1264 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
1265 if (cli->fallback_after_kerberos)
1266 goto ntlmssp;
1267 return ADS_ERROR_KRB5(ret);
1268 }
1269 }
1270
1271 /* If we get a bad principal, try to guess it if
1272 we have a valid host NetBIOS name.
1273 */
1274 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
1275 TALLOC_FREE(principal);
1276 }
1277
1278 if (principal == NULL &&
1279 !is_ipaddress(cli->desthost) &&
1280 !strequal(STAR_SMBSERVER,
1281 cli->desthost)) {
1282 char *realm = NULL;
1283 char *machine = NULL;
1284 char *host = NULL;
1285 DEBUG(3,("cli_session_setup_spnego: got a "
1286 "bad server principal, trying to guess ...\n"));
1287
1288 host = strchr_m(cli->desthost, '.');
1289 if (host) {
1290 /* We had a '.' in the name. */
1291 machine = SMB_STRNDUP(cli->desthost,
1292 host - cli->desthost);
1293 } else {
1294 machine = SMB_STRDUP(cli->desthost);
1295 }
1296 if (machine == NULL) {
1297 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1298 }
1299
1300 if (dest_realm) {
1301 realm = SMB_STRDUP(dest_realm);
1302 strupper_m(realm);
1303 } else {
1304 if (host) {
1305 /* DNS name. */
1306 realm = kerberos_get_realm_from_hostname(cli->desthost);
1307 } else {
1308 /* NetBIOS name - use our realm. */
1309 realm = kerberos_get_default_realm_from_ccache();
1310 }
1311 }
1312
1313 if (realm && *realm) {
1314 if (host) {
1315 /* DNS name. */
1316 principal = talloc_asprintf(talloc_tos(),
1317 "cifs/%s@%s",
1318 cli->desthost,
1319 realm);
1320 } else {
1321 /* NetBIOS name, use machine account. */
1322 principal = talloc_asprintf(talloc_tos(),
1323 "%s$@%s",
1324 machine,
1325 realm);
1326 }
1327 if (!principal) {
1328 SAFE_FREE(machine);
1329 SAFE_FREE(realm);
1330 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1331 }
1332 DEBUG(3,("cli_session_setup_spnego: guessed "
1333 "server principal=%s\n",
1334 principal ? principal : "<null>"));
1335 }
1336 SAFE_FREE(machine);
1337 SAFE_FREE(realm);
1338 }
1339
1340 if (principal) {
1341 rc = cli_session_setup_kerberos(cli, principal,
1342 dest_realm);
1343 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
1344 TALLOC_FREE(principal);
1345 return rc;
1346 }
1347 }
1348 }
1349 #endif
1350
1351 TALLOC_FREE(principal);
1352
1353 ntlmssp:
1354
1355 account = talloc_strdup(talloc_tos(), user);
1356 if (!account) {
1357 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1358 }
1359
1360 /* when falling back to ntlmssp while authenticating with a machine
1361 * account strip off the realm - gd */
1362
1363 if ((p = strchr_m(user, '@')) != NULL) {
1364 account[PTR_DIFF(p,user)] = '\0';
1365 }
1366
1367 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, account, pass, user_domain));
1368 }
1369
1370 /****************************************************************************
1371 Send a session setup. The username and workgroup is in UNIX character
1372 format and must be converted to DOS codepage format before sending. If the
1373 password is in plaintext, the same should be done.
1374 ****************************************************************************/
1375
1376 NTSTATUS cli_session_setup(struct cli_state *cli,
1377 const char *user,
1378 const char *pass, int passlen,
1379 const char *ntpass, int ntpasslen,
1380 const char *workgroup)
1381 {
1382 char *p;
1383 fstring user2;
1384
1385 if (user) {
1386 fstrcpy(user2, user);
1387 } else {
1388 user2[0] ='\0';
1389 }
1390
1391 if (!workgroup) {
1392 workgroup = "";
1393 }
1394
1395 /* allow for workgroups as part of the username */
1396 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
1397 (p=strchr_m(user2,*lp_winbind_separator()))) {
1398 *p = 0;
1399 user = p+1;
1400 workgroup = user2;
1401 }
1402
1403 if (cli->protocol < PROTOCOL_LANMAN1) {
1404 return NT_STATUS_OK;
1405 }
1406
1407 /* now work out what sort of session setup we are going to
1408 do. I have split this into separate functions to make the
1409 flow a bit easier to understand (tridge) */
1410
1411 /* if its an older server then we have to use the older request format */
1412
1413 if (cli->protocol < PROTOCOL_NT1) {
1414 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
1415 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
1416 " is disabled\n"));
1417 return NT_STATUS_ACCESS_DENIED;
1418 }
1419
1420 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
1421 !lp_client_plaintext_auth() && (*pass)) {
1422 DEBUG(1, ("Server requested plaintext password but "
1423 "'client plaintext auth' is disabled\n"));
1424 return NT_STATUS_ACCESS_DENIED;
1425 }
1426
1427 return cli_session_setup_lanman2(cli, user, pass, passlen,
1428 workgroup);
1429 }
1430
1431 /* if no user is supplied then we have to do an anonymous connection.
1432 passwords are ignored */
1433
1434 if (!user || !*user)
1435 return cli_session_setup_guest(cli);
1436
1437 /* if the server is share level then send a plaintext null
1438 password at this point. The password is sent in the tree
1439 connect */
1440
1441 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1442 return cli_session_setup_plaintext(cli, user, "", workgroup);
1443
1444 /* if the server doesn't support encryption then we have to use
1445 plaintext. The second password is ignored */
1446
1447 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1448 if (!lp_client_plaintext_auth() && (*pass)) {
1449 DEBUG(1, ("Server requested plaintext password but "
1450 "'client plaintext auth' is disabled\n"));
1451 return NT_STATUS_ACCESS_DENIED;
1452 }
1453 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1454 }
1455
1456 /* if the server supports extended security then use SPNEGO */
1457
1458 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1459 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass,
1460 workgroup, NULL);
1461 if (!ADS_ERR_OK(status)) {
1462 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1463 return ads_ntstatus(status);
1464 }
1465 } else {
1466 NTSTATUS status;
1467
1468 /* otherwise do a NT1 style session setup */
1469 status = cli_session_setup_nt1(cli, user, pass, passlen,
1470 ntpass, ntpasslen, workgroup);
1471 if (!NT_STATUS_IS_OK(status)) {
1472 DEBUG(3,("cli_session_setup: NT1 session setup "
1473 "failed: %s\n", nt_errstr(status)));
1474 return status;
1475 }
1476 }
1477
1478 if (strstr(cli->server_type, "Samba")) {
1479 cli->is_samba = True;
1480 }
1481
1482 return NT_STATUS_OK;
1483 }
1484
1485 /****************************************************************************
1486 Send a uloggoff.
1487 *****************************************************************************/
1488
1489 struct cli_ulogoff_state {
1490 struct cli_state *cli;
1491 uint16_t vwv[2];
1492 };
1493
1494 static void cli_ulogoff_done(struct tevent_req *subreq);
1495
1496 struct tevent_req *cli_ulogoff_send(TALLOC_CTX *mem_ctx,
1497 struct tevent_context *ev,
1498 struct cli_state *cli)
1499 {
1500 struct tevent_req *req, *subreq;
1501 struct cli_ulogoff_state *state;
1502
1503 req = tevent_req_create(mem_ctx, &state, struct cli_ulogoff_state);
1504 if (req == NULL) {
1505 return NULL;
1506 }
1507 state->cli = cli;
1508
1509 SCVAL(state->vwv+0, 0, 0xFF);
1510 SCVAL(state->vwv+1, 0, 0);
1511 SSVAL(state->vwv+2, 0, 0);
1512
1513 subreq = cli_smb_send(state, ev, cli, SMBulogoffX, 0, 2, state->vwv,
1514 0, NULL);
1515 if (tevent_req_nomem(subreq, req)) {
1516 return tevent_req_post(req, ev);
1517 }
1518 tevent_req_set_callback(subreq, cli_ulogoff_done, req);
1519 return req;
1520 }
1521
1522 static void cli_ulogoff_done(struct tevent_req *subreq)
1523 {
1524 struct tevent_req *req = tevent_req_callback_data(
1525 subreq, struct tevent_req);
1526 struct cli_ulogoff_state *state = tevent_req_data(
1527 req, struct cli_ulogoff_state);
1528 NTSTATUS status;
1529
1530 status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
1531 if (!NT_STATUS_IS_OK(status)) {
1532 tevent_req_nterror(req, status);
1533 return;
1534 }
1535 state->cli->vuid = -1;
1536 tevent_req_done(req);
1537 }
1538
1539 NTSTATUS cli_ulogoff_recv(struct tevent_req *req)
1540 {
1541 return tevent_req_simple_recv_ntstatus(req);
1542 }
1543
1544 NTSTATUS cli_ulogoff(struct cli_state *cli)
1545 {
1546 struct tevent_context *ev;
1547 struct tevent_req *req;
1548 NTSTATUS status = NT_STATUS_NO_MEMORY;
1549
1550 if (cli_has_async_calls(cli)) {
1551 return NT_STATUS_INVALID_PARAMETER;
1552 }
1553 ev = tevent_context_init(talloc_tos());
1554 if (ev == NULL) {
1555 goto fail;
1556 }
1557 req = cli_ulogoff_send(ev, ev, cli);
1558 if (req == NULL) {
1559 goto fail;
1560 }
1561 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1562 goto fail;
1563 }
1564 status = cli_ulogoff_recv(req);
1565 fail:
1566 TALLOC_FREE(ev);
1567 if (!NT_STATUS_IS_OK(status)) {
1568 cli_set_error(cli, status);
1569 }
1570 return status;
1571 }
1572
1573 /****************************************************************************
1574 Send a tconX.
1575 ****************************************************************************/
1576
1577 struct cli_tcon_andx_state {
1578 struct cli_state *cli;
1579 uint16_t vwv[4];
1580 struct iovec bytes;
1581 };
1582
1583 static void cli_tcon_andx_done(struct tevent_req *subreq);
1584
1585 struct tevent_req *cli_tcon_andx_create(TALLOC_CTX *mem_ctx,
1586 struct event_context *ev,
1587 struct cli_state *cli,
1588 const char *share, const char *dev,
1589 const char *pass, int passlen,
1590 struct tevent_req **psmbreq)
1591 {
1592 struct tevent_req *req, *subreq;
1593 struct cli_tcon_andx_state *state;
1594 fstring pword;
1595 uint16_t *vwv;
1596 char *tmp = NULL;
1597 uint8_t *bytes;
1598
1599 *psmbreq = NULL;
1600
1601 req = tevent_req_create(mem_ctx, &state, struct cli_tcon_andx_state);
1602 if (req == NULL) {
1603 return NULL;
1604 }
1605 state->cli = cli;
1606 vwv = state->vwv;
1607
1608 fstrcpy(cli->share, share);
1609
1610 /* in user level security don't send a password now */
1611 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1612 passlen = 1;
1613 pass = "";
1614 } else if (pass == NULL) {
1615 DEBUG(1, ("Server not using user level security and no "
1616 "password supplied.\n"));
1617 goto access_denied;
1618 }
1619
1620 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1621 *pass && passlen != 24) {
1622 if (!lp_client_lanman_auth()) {
1623 DEBUG(1, ("Server requested LANMAN password "
1624 "(share-level security) but "
1625 "'client lanman auth' is disabled\n"));
1626 goto access_denied;
1627 }
1628
1629 /*
1630 * Non-encrypted passwords - convert to DOS codepage before
1631 * encryption.
1632 */
1633 passlen = 24;
1634 SMBencrypt(pass, cli->secblob.data, (uchar *)pword);
1635 } else {
1636 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL
1637 |NEGOTIATE_SECURITY_CHALLENGE_RESPONSE))
1638 == 0) {
1639 if (!lp_client_plaintext_auth() && (*pass)) {
1640 DEBUG(1, ("Server requested plaintext "
1641 "password but 'client plaintext "
1642 "auth' is disabled\n"));
1643 goto access_denied;
1644 }
1645
1646 /*
1647 * Non-encrypted passwords - convert to DOS codepage
1648 * before using.
1649 */
1650 passlen = clistr_push(cli, pword, pass, sizeof(pword),
1651 STR_TERMINATE);
1652 if (passlen == -1) {
1653 DEBUG(1, ("clistr_push(pword) failed\n"));
1654 goto access_denied;
1655 }
1656 } else {
1657 if (passlen) {
1658 memcpy(pword, pass, passlen);
1659 }
1660 }
1661 }
1662
1663 SCVAL(vwv+0, 0, 0xFF);
1664 SCVAL(vwv+0, 1, 0);
1665 SSVAL(vwv+1, 0, 0);
1666 SSVAL(vwv+2, 0, TCONX_FLAG_EXTENDED_RESPONSE);
1667 SSVAL(vwv+3, 0, passlen);
1668
1669 if (passlen) {
1670 bytes = (uint8_t *)talloc_memdup(state, pword, passlen);
1671 } else {
1672 bytes = talloc_array(state, uint8_t, 0);
1673 }
1674
1675 /*
1676 * Add the sharename
1677 */
1678 tmp = talloc_asprintf_strupper_m(talloc_tos(), "\\\\%s\\%s",
1679 cli->desthost, share);
1680 if (tmp == NULL) {
1681 TALLOC_FREE(req);
1682 return NULL;
1683 }
1684 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), tmp, strlen(tmp)+1,
1685 NULL);
1686 TALLOC_FREE(tmp);
1687
1688 /*
1689 * Add the devicetype
1690 */
1691 tmp = talloc_strdup_upper(talloc_tos(), dev);
1692 if (tmp == NULL) {
1693 TALLOC_FREE(req);
1694 return NULL;
1695 }
1696 bytes = smb_bytes_push_str(bytes, false, tmp, strlen(tmp)+1, NULL);
1697 TALLOC_FREE(tmp);
1698
1699 if (bytes == NULL) {
1700 TALLOC_FREE(req);
1701 return NULL;
1702 }
1703
1704 state->bytes.iov_base = (void *)bytes;
1705 state->bytes.iov_len = talloc_get_size(bytes);
1706
1707 subreq = cli_smb_req_create(state, ev, cli, SMBtconX, 0, 4, vwv,
1708 1, &state->bytes);
1709 if (subreq == NULL) {
1710 TALLOC_FREE(req);
1711 return NULL;
1712 }
1713 tevent_req_set_callback(subreq, cli_tcon_andx_done, req);
1714 *psmbreq = subreq;
1715 return req;
1716
1717 access_denied:
1718 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1719 return tevent_req_post(req, ev);
1720 }
1721
1722 struct tevent_req *cli_tcon_andx_send(TALLOC_CTX *mem_ctx,
1723 struct event_context *ev,
1724 struct cli_state *cli,
1725 const char *share, const char *dev,
1726 const char *pass, int passlen)
1727 {
1728 struct tevent_req *req, *subreq;
1729 NTSTATUS status;
1730
1731 req = cli_tcon_andx_create(mem_ctx, ev, cli, share, dev, pass, passlen,
1732 &subreq);
1733 if (req == NULL) {
1734 return NULL;
1735 }
1736 if (subreq == NULL) {
1737 return req;
1738 }
1739 status = cli_smb_req_send(subreq);
1740 if (!NT_STATUS_IS_OK(status)) {
1741 tevent_req_nterror(req, status);
1742 return tevent_req_post(req, ev);
1743 }
1744 return req;
1745 }
1746
1747 static void cli_tcon_andx_done(struct tevent_req *subreq)
1748 {
1749 struct tevent_req *req = tevent_req_callback_data(
1750 subreq, struct tevent_req);
1751 struct cli_tcon_andx_state *state = tevent_req_data(
1752 req, struct cli_tcon_andx_state);
1753 struct cli_state *cli = state->cli;
1754 char *inbuf = (char *)cli_smb_inbuf(subreq);
1755 uint8_t wct;
1756 uint16_t *vwv;
1757 uint32_t num_bytes;
1758 uint8_t *bytes;
1759 NTSTATUS status;
1760
1761 status = cli_smb_recv(subreq, NULL, NULL, 0, &wct, &vwv,
1762 &num_bytes, &bytes);
1763 if (!NT_STATUS_IS_OK(status)) {
1764 TALLOC_FREE(subreq);
1765 tevent_req_nterror(req, status);
1766 return;
1767 }
1768
1769 clistr_pull(inbuf, cli->dev, bytes, sizeof(fstring), num_bytes,
1770 STR_TERMINATE|STR_ASCII);
1771
1772 if ((cli->protocol >= PROTOCOL_NT1) && (num_bytes == 3)) {
1773 /* almost certainly win95 - enable bug fixes */
1774 cli->win95 = True;
1775 }
1776
1777 /*
1778 * Make sure that we have the optional support 16-bit field. WCT > 2.
1779 * Avoids issues when connecting to Win9x boxes sharing files
1780 */
1781
1782 cli->dfsroot = false;
1783
1784 if ((wct > 2) && (cli->protocol >= PROTOCOL_LANMAN2)) {
1785 cli->dfsroot = ((SVAL(vwv+2, 0) & SMB_SHARE_IN_DFS) != 0);
1786 }
1787
1788 cli->cnum = SVAL(inbuf,smb_tid);
1789 tevent_req_done(req);
1790 }
1791
1792 NTSTATUS cli_tcon_andx_recv(struct tevent_req *req)
1793 {
1794 return tevent_req_simple_recv_ntstatus(req);
1795 }
1796
1797 NTSTATUS cli_tcon_andx(struct cli_state *cli, const char *share,
1798 const char *dev, const char *pass, int passlen)
1799 {
1800 TALLOC_CTX *frame = talloc_stackframe();
1801 struct event_context *ev;
1802 struct tevent_req *req;
1803 NTSTATUS status = NT_STATUS_OK;
1804
1805 if (cli_has_async_calls(cli)) {
1806 /*
1807 * Can't use sync call while an async call is in flight
1808 */
1809 status = NT_STATUS_INVALID_PARAMETER;
1810 goto fail;
1811 }
1812
1813 ev = event_context_init(frame);
1814 if (ev == NULL) {
1815 status = NT_STATUS_NO_MEMORY;
1816 goto fail;
1817 }
1818
1819 req = cli_tcon_andx_send(frame, ev, cli, share, dev, pass, passlen);
1820 if (req == NULL) {
1821 status = NT_STATUS_NO_MEMORY;
1822 goto fail;
1823 }
1824
1825 if (!tevent_req_poll(req, ev)) {
1826 status = map_nt_error_from_unix(errno);
1827 goto fail;
1828 }
1829
1830 status = cli_tcon_andx_recv(req);
1831 fail:
1832 TALLOC_FREE(frame);
1833 if (!NT_STATUS_IS_OK(status)) {
1834 cli_set_error(cli, status);
1835 }
1836 return status;
1837 }
1838
1839 /****************************************************************************
1840 Send a tree disconnect.
1841 ****************************************************************************/
1842
1843 struct cli_tdis_state {
1844 struct cli_state *cli;
1845 };
1846
1847 static void cli_tdis_done(struct tevent_req *subreq);
1848
1849 struct tevent_req *cli_tdis_send(TALLOC_CTX *mem_ctx,
1850 struct tevent_context *ev,
1851 struct cli_state *cli)
1852 {
1853 struct tevent_req *req, *subreq;
1854 struct cli_tdis_state *state;
1855
1856 req = tevent_req_create(mem_ctx, &state, struct cli_tdis_state);
1857 if (req == NULL) {
1858 return NULL;
1859 }
1860 state->cli = cli;
1861
1862 subreq = cli_smb_send(state, ev, cli, SMBtdis, 0, 0, NULL, 0, NULL);
1863 if (tevent_req_nomem(subreq, req)) {
1864 return tevent_req_post(req, ev);
1865 }
1866 tevent_req_set_callback(subreq, cli_tdis_done, req);
1867 return req;
1868 }
1869
1870 static void cli_tdis_done(struct tevent_req *subreq)
1871 {
1872 struct tevent_req *req = tevent_req_callback_data(
1873 subreq, struct tevent_req);
1874 struct cli_tdis_state *state = tevent_req_data(
1875 req, struct cli_tdis_state);
1876 NTSTATUS status;
1877
1878 status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
1879 TALLOC_FREE(subreq);
1880 if (!NT_STATUS_IS_OK(status)) {
1881 tevent_req_nterror(req, status);
1882 return;
1883 }
1884 state->cli->cnum = -1;
1885 tevent_req_done(req);
1886 }
1887
1888 NTSTATUS cli_tdis_recv(struct tevent_req *req)
1889 {
1890 return tevent_req_simple_recv_ntstatus(req);
1891 }
1892
1893 NTSTATUS cli_tdis(struct cli_state *cli)
1894 {
1895 struct tevent_context *ev;
1896 struct tevent_req *req;
1897 NTSTATUS status = NT_STATUS_NO_MEMORY;
1898
1899 if (cli_has_async_calls(cli)) {
1900 return NT_STATUS_INVALID_PARAMETER;
1901 }
1902 ev = tevent_context_init(talloc_tos());
1903 if (ev == NULL) {
1904 goto fail;
1905 }
1906 req = cli_tdis_send(ev, ev, cli);
1907 if (req == NULL) {
1908 goto fail;
1909 }
1910 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1911 goto fail;
1912 }
1913 status = cli_tdis_recv(req);
1914 fail:
1915 TALLOC_FREE(ev);
1916 if (!NT_STATUS_IS_OK(status)) {
1917 cli_set_error(cli, status);
1918 }
1919 return status;
1920 }
1921
1922 /****************************************************************************
1923 Send a negprot command.
1924 ****************************************************************************/
1925
1926 void cli_negprot_sendsync(struct cli_state *cli)
1927 {
1928 char *p;
1929 int numprots;
1930
1931 if (cli->protocol < PROTOCOL_NT1)
1932 cli->use_spnego = False;
1933
1934 memset(cli->outbuf,'\0',smb_size);
1935
1936 /* setup the protocol strings */
1937 cli_set_message(cli->outbuf,0,0,True);
1938
1939 p = smb_buf(cli->outbuf);
1940 for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1941 if (prots[numprots].prot > cli->protocol) {
1942 break;
1943 }
1944 *p++ = 2;
1945 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1946 }
1947
1948 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1949 cli_setup_bcc(cli, p);
1950 cli_setup_packet(cli);
1951
1952 SCVAL(smb_buf(cli->outbuf),0,2);
1953
1954 cli_send_smb(cli);
1955 }
1956
1957 /****************************************************************************
1958 Send a negprot command.
1959 ****************************************************************************/
1960
1961 struct cli_negprot_state {
1962 struct cli_state *cli;
1963 };
1964
1965 static void cli_negprot_done(struct tevent_req *subreq);
1966
1967 struct tevent_req *cli_negprot_send(TALLOC_CTX *mem_ctx,
1968 struct event_context *ev,
1969 struct cli_state *cli)
1970 {
1971 struct tevent_req *req, *subreq;
1972 struct cli_negprot_state *state;
1973 uint8_t *bytes = NULL;
1974 int numprots;
1975 uint16_t cnum;
1976
1977 req = tevent_req_create(mem_ctx, &state, struct cli_negprot_state);
1978 if (req == NULL) {
1979 return NULL;
1980 }
1981 state->cli = cli;
1982
1983 if (cli->protocol < PROTOCOL_NT1)
1984 cli->use_spnego = False;
1985
1986 /* setup the protocol strings */
1987 for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1988 uint8_t c = 2;
1989 if (prots[numprots].prot > cli->protocol) {
1990 break;
1991 }
1992 bytes = (uint8_t *)talloc_append_blob(
1993 state, bytes, data_blob_const(&c, sizeof(c)));
1994 if (tevent_req_nomem(bytes, req)) {
1995 return tevent_req_post(req, ev);
1996 }
1997 bytes = smb_bytes_push_str(bytes, false,
1998 prots[numprots].name,
1999 strlen(prots[numprots].name)+1,
2000 NULL);
2001 if (tevent_req_nomem(bytes, req)) {
2002 return tevent_req_post(req, ev);
2003 }
2004 }
2005
2006 cnum = cli->cnum;
2007
2008 cli->cnum = 0;
2009 subreq = cli_smb_send(state, ev, cli, SMBnegprot, 0, 0, NULL,
2010 talloc_get_size(bytes), bytes);
2011 cli->cnum = cnum;
2012
2013 if (tevent_req_nomem(subreq, req)) {
2014 return tevent_req_post(req, ev);
2015 }
2016 tevent_req_set_callback(subreq, cli_negprot_done, req);
2017 return req;
2018 }
2019
2020 static void cli_negprot_done(struct tevent_req *subreq)
2021 {
2022 struct tevent_req *req = tevent_req_callback_data(
2023 subreq, struct tevent_req);
2024 struct cli_negprot_state *state = tevent_req_data(
2025 req, struct cli_negprot_state);
2026 struct cli_state *cli = state->cli;
2027 uint8_t wct;
2028 uint16_t *vwv;
2029 uint32_t num_bytes;
2030 uint8_t *bytes;
2031 NTSTATUS status;
2032 uint16_t protnum;
2033
2034 status = cli_smb_recv(subreq, NULL, NULL, 1, &wct, &vwv,
2035 &num_bytes, &bytes);
2036 if (!NT_STATUS_IS_OK(status)) {
2037 TALLOC_FREE(subreq);
2038 tevent_req_nterror(req, status);
2039 return;
2040 }
2041
2042 protnum = SVAL(vwv, 0);
2043
2044 if ((protnum >= ARRAY_SIZE(prots))
2045 || (prots[protnum].prot > cli->protocol)) {
2046 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
2047 return;
2048 }
2049
2050 cli->protocol = prots[protnum].prot;
2051
2052 if ((cli->protocol < PROTOCOL_NT1) &&
2053 client_is_signing_mandatory(cli)) {
2054 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
2055 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
2056 return;
2057 }
2058
2059 if (cli->protocol >= PROTOCOL_NT1) {
2060 struct timespec ts;
2061 bool negotiated_smb_signing = false;
2062
2063 /* NT protocol */
2064 cli->sec_mode = CVAL(vwv + 1, 0);
2065 cli->max_mux = SVAL(vwv + 1, 1);
2066 cli->max_xmit = IVAL(vwv + 3, 1);
2067 cli->sesskey = IVAL(vwv + 7, 1);
2068 cli->serverzone = SVALS(vwv + 15, 1);
2069 cli->serverzone *= 60;
2070 /* this time arrives in real GMT */
2071 ts = interpret_long_date(((char *)(vwv+11))+1);
2072 cli->servertime = ts.tv_sec;
2073 cli->secblob = data_blob(bytes, num_bytes);
2074 cli->capabilities = IVAL(vwv + 9, 1);
2075 if (cli->capabilities & CAP_RAW_MODE) {
2076 cli->readbraw_supported = True;
2077 cli->writebraw_supported = True;
2078 }
2079 /* work out if they sent us a workgroup */
2080 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
2081 smb_buflen(cli->inbuf) > 8) {
2082 clistr_pull(cli->inbuf, cli->server_domain,
2083 bytes+8, sizeof(cli->server_domain),
2084 num_bytes-8,
2085 STR_UNICODE|STR_NOALIGN);
2086 }
2087
2088 /*
2089 * As signing is slow we only turn it on if either the client or
2090 * the server require it. JRA.
2091 */
2092
2093 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
2094 /* Fail if server says signing is mandatory and we don't want to support it. */
2095 if (!client_is_signing_allowed(cli)) {
2096 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
2097 tevent_req_nterror(req,
2098 NT_STATUS_ACCESS_DENIED);
2099 return;
2100 }
2101 negotiated_smb_signing = true;
2102 } else if (client_is_signing_mandatory(cli) && client_is_signing_allowed(cli)) {
2103 /* Fail if client says signing is mandatory and the server doesn't support it. */
2104 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
2105 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
2106 tevent_req_nterror(req,
2107 NT_STATUS_ACCESS_DENIED);
2108 return;
2109 }
2110 negotiated_smb_signing = true;
2111 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
2112 negotiated_smb_signing = true;
2113 }
2114
2115 if (negotiated_smb_signing) {
2116 cli_set_signing_negotiated(cli);
2117 }
2118
2119 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
2120 SAFE_FREE(cli->outbuf);
2121 SAFE_FREE(cli->inbuf);
2122 cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
2123 cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
2124 cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE + LARGE_WRITEX_HDR_SIZE;
2125 }
2126
2127 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
2128 cli->use_spnego = False;
2129 cli->sec_mode = SVAL(vwv + 1, 0);
2130 cli->max_xmit = SVAL(vwv + 2, 0);
2131 cli->max_mux = SVAL(vwv + 3, 0);
2132 cli->sesskey = IVAL(vwv + 6, 0);
2133 cli->serverzone = SVALS(vwv + 10, 0);
2134 cli->serverzone *= 60;
2135 /* this time is converted to GMT by make_unix_date */
2136 cli->servertime = cli_make_unix_date(
2137 cli, (char *)(vwv + 8));
2138 cli->readbraw_supported = ((SVAL(vwv + 5, 0) & 0x1) != 0);
2139 cli->writebraw_supported = ((SVAL(vwv + 5, 0) & 0x2) != 0);
2140 cli->secblob = data_blob(bytes, num_bytes);
2141 } else {
2142 /* the old core protocol */
2143 cli->use_spnego = False;
2144 cli->sec_mode = 0;
2145 cli->serverzone = get_time_zone(time(NULL));
2146 }
2147
2148 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
2149
2150 /* a way to force ascii SMB */
2151 if (getenv("CLI_FORCE_ASCII"))
2152 cli->capabilities &= ~CAP_UNICODE;
2153
2154 tevent_req_done(req);
2155 }
2156
2157 NTSTATUS cli_negprot_recv(struct tevent_req *req)
2158 {
2159 return tevent_req_simple_recv_ntstatus(req);
2160 }
2161
2162 NTSTATUS cli_negprot(struct cli_state *cli)
2163 {
2164 TALLOC_CTX *frame = talloc_stackframe();
2165 struct event_context *ev;
2166 struct tevent_req *req;
2167 NTSTATUS status = NT_STATUS_OK;
2168
2169 if (cli_has_async_calls(cli)) {
2170 /*
2171 * Can't use sync call while an async call is in flight
2172 */
2173 status = NT_STATUS_INVALID_PARAMETER;
2174 goto fail;
2175 }
2176
2177 ev = event_context_init(frame);
2178 if (ev == NULL) {
2179 status = NT_STATUS_NO_MEMORY;
2180 goto fail;
2181 }
2182
2183 req = cli_negprot_send(frame, ev, cli);
2184 if (req == NULL) {
2185 status = NT_STATUS_NO_MEMORY;
2186 goto fail;
2187 }
2188
2189 if (!tevent_req_poll(req, ev)) {
2190 status = map_nt_error_from_unix(errno);
2191 goto fail;
2192 }
2193
2194 status = cli_negprot_recv(req);
2195 fail:
2196 TALLOC_FREE(frame);
2197 if (!NT_STATUS_IS_OK(status)) {
2198 cli_set_error(cli, status);
2199 }
2200 return status;
2201 }
2202
2203 /****************************************************************************
2204 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
2205 ****************************************************************************/
2206
2207 bool cli_session_request(struct cli_state *cli,
2208 struct nmb_name *calling, struct nmb_name *called)
2209 {
2210 char *p;
2211 int len = 4;
2212 char *tmp;
2213
2214 /* 445 doesn't have session request */
2215 if (cli->port == 445)
2216 return True;
2217
2218 memcpy(&(cli->calling), calling, sizeof(*calling));
2219 memcpy(&(cli->called ), called , sizeof(*called ));
2220
2221 /* put in the destination name */
2222
2223 tmp = name_mangle(talloc_tos(), cli->called.name,
2224 cli->called.name_type);
2225 if (tmp == NULL) {
2226 return false;
2227 }
2228
2229 p = cli->outbuf+len;
2230 memcpy(p, tmp, name_len(tmp));
2231 len += name_len(tmp);
2232 TALLOC_FREE(tmp);
2233
2234 /* and my name */
2235
2236 tmp = name_mangle(talloc_tos(), cli->calling.name,
2237 cli->calling.name_type);
2238 if (tmp == NULL) {
2239 return false;
2240 }
2241
2242 p = cli->outbuf+len;
2243 memcpy(p, tmp, name_len(tmp));
2244 len += name_len(tmp);
2245 TALLOC_FREE(tmp);
2246
2247 /* send a session request (RFC 1002) */
2248 /* setup the packet length
2249 * Remove four bytes from the length count, since the length
2250 * field in the NBT Session Service header counts the number
2251 * of bytes which follow. The cli_send_smb() function knows
2252 * about this and accounts for those four bytes.
2253 * CRH.
2254 */
2255 len -= 4;
2256 _smb_setlen(cli->outbuf,len);
2257 SCVAL(cli->outbuf,0,0x81);
2258
2259 cli_send_smb(cli);
2260 DEBUG(5,("Sent session request\n"));
2261
2262 if (!cli_receive_smb(cli))
2263 return False;
2264
2265 if (CVAL(cli->inbuf,0) == 0x84) {
2266 /* C. Hoch 9/14/95 Start */
2267 /* For information, here is the response structure.
2268 * We do the byte-twiddling to for portability.
2269 struct RetargetResponse{
2270 unsigned char type;
2271 unsigned char flags;
2272 int16 length;
2273 int32 ip_addr;
2274 int16 port;
2275 };
2276 */
2277 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
2278 struct in_addr dest_ip;
2279 NTSTATUS status;
2280
2281 /* SESSION RETARGET */
2282 putip((char *)&dest_ip,cli->inbuf+4);
2283 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
2284
2285 status = open_socket_out(&cli->dest_ss, port,
2286 LONG_CONNECT_TIMEOUT, &cli->fd);
2287 if (!NT_STATUS_IS_OK(status)) {
2288 return False;
2289 }
2290
2291 DEBUG(3,("Retargeted\n"));
2292
2293 set_socket_options(cli->fd, lp_socket_options());
2294
2295 /* Try again */
2296 {
2297 static int depth;
2298 bool ret;
2299 if (depth > 4) {
2300 DEBUG(0,("Retarget recursion - failing\n"));
2301 return False;
2302 }
2303 depth++;
2304 ret = cli_session_request(cli, calling, called);
2305 depth--;
2306 return ret;
2307 }
2308 } /* C. Hoch 9/14/95 End */
2309
2310 if (CVAL(cli->inbuf,0) != 0x82) {
2311 /* This is the wrong place to put the error... JRA. */
2312 cli->rap_error = CVAL(cli->inbuf,4);
2313 return False;
2314 }
2315 return(True);
2316 }
2317
2318 struct fd_struct {
2319 int fd;
2320 };
2321
2322 static void smb_sock_connected(struct tevent_req *req)
2323 {
2324 struct fd_struct *pfd = tevent_req_callback_data(
2325 req, struct fd_struct);
2326 int fd;
2327 NTSTATUS status;
2328
2329 status = open_socket_out_defer_recv(req, &fd);
2330 if (NT_STATUS_IS_OK(status)) {
2331 pfd->fd = fd;
2332 }
2333 }
2334
2335 static NTSTATUS open_smb_socket(const struct sockaddr_storage *pss,
2336 uint16_t *port, int timeout, int *pfd)
2337 {
2338 struct event_context *ev;
2339 struct tevent_req *r139, *r445;
2340 struct fd_struct *fd139, *fd445;
2341 NTSTATUS status = NT_STATUS_NO_MEMORY;
2342
2343 if (*port != 0) {
2344 return open_socket_out(pss, *port, timeout, pfd);
2345 }
2346
2347 ev = event_context_init(talloc_tos());
2348 if (ev == NULL) {
2349 return NT_STATUS_NO_MEMORY;
2350 }
2351
2352 fd139 = talloc(ev, struct fd_struct);
2353 if (fd139 == NULL) {
2354 goto done;
2355 }
2356 fd139->fd = -1;
2357
2358 fd445 = talloc(ev, struct fd_struct);
2359 if (fd445 == NULL) {
2360 goto done;
2361 }
2362 fd445->fd = -1;
2363
2364 r445 = open_socket_out_defer_send(ev, ev, timeval_set(0, 0),
2365 pss, 445, timeout);
2366 r139 = open_socket_out_defer_send(ev, ev, timeval_set(0, 3000),
2367 pss, 139, timeout);
2368 if ((r445 == NULL) || (r139 == NULL)) {
2369 goto done;
2370 }
2371 tevent_req_set_callback(r445, smb_sock_connected, fd445);
2372 tevent_req_set_callback(r139, smb_sock_connected, fd139);
2373
2374 while ((fd445->fd == -1) && (fd139->fd == -1)
2375 && (tevent_req_is_in_progress(r139)
2376 || tevent_req_is_in_progress(r445))) {
2377 event_loop_once(ev);
2378 }
2379
2380 if ((fd139->fd != -1) && (fd445->fd != -1)) {
2381 close(fd139->fd);
2382 fd139->fd = -1;
2383 }
2384
2385 if (fd445->fd != -1) {
2386 *port = 445;
2387 *pfd = fd445->fd;
2388 status = NT_STATUS_OK;
2389 goto done;
2390 }
2391 if (fd139->fd != -1) {
2392 *port = 139;
2393 *pfd = fd139->fd;
2394 status = NT_STATUS_OK;
2395 goto done;
2396 }
2397
2398 status = open_socket_out_defer_recv(r445, &fd445->fd);
2399 done:
2400 TALLOC_FREE(ev);
2401 return status;
2402 }
2403
2404 /****************************************************************************
2405 Open the client sockets.
2406 ****************************************************************************/
2407
2408 NTSTATUS cli_connect(struct cli_state *cli,
2409 const char *host,
2410 struct sockaddr_storage *dest_ss)
2411
2412 {
2413 int name_type = 0x20;
2414 TALLOC_CTX *frame = talloc_stackframe();
2415 unsigned int num_addrs = 0;
2416 unsigned int i = 0;
2417 struct sockaddr_storage *ss_arr = NULL;
2418 char *p = NULL;
2419
2420 /* reasonable default hostname */
2421 if (!host) {
2422 host = STAR_SMBSERVER;
2423 }
2424
2425 fstrcpy(cli->desthost, host);
2426
2427 /* allow hostnames of the form NAME#xx and do a netbios lookup */
2428 if ((p = strchr(cli->desthost, '#'))) {
2429 name_type = strtol(p+1, NULL, 16);
2430 *p = 0;
2431 }
2432
2433 if (!dest_ss || is_zero_addr((struct sockaddr *)dest_ss)) {
2434 NTSTATUS status =resolve_name_list(frame,
2435 cli->desthost,
2436 name_type,
2437 &ss_arr,
2438 &num_addrs);
2439 if (!NT_STATUS_IS_OK(status)) {
2440 TALLOC_FREE(frame);
2441 return NT_STATUS_BAD_NETWORK_NAME;
2442 }
2443 } else {
2444 num_addrs = 1;
2445 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
2446 if (!ss_arr) {
2447 TALLOC_FREE(frame);
2448 return NT_STATUS_NO_MEMORY;
2449 }
2450 *ss_arr = *dest_ss;
2451 }
2452
2453 for (i = 0; i < num_addrs; i++) {
2454 cli->dest_ss = ss_arr[i];
2455 if (getenv("LIBSMB_PROG")) {
2456 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
2457 } else {
2458 uint16_t port = cli->port;
2459 NTSTATUS status;
2460 status = open_smb_socket(&cli->dest_ss, &port,
2461 cli->timeout, &cli->fd);
2462 if (NT_STATUS_IS_OK(status)) {
2463 cli->port = port;
2464 }
2465 }
2466 if (cli->fd == -1) {
2467 char addr[INET6_ADDRSTRLEN];
2468 print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
2469 DEBUG(2,("Error connecting to %s (%s)\n",
2470 dest_ss?addr:host,strerror(errno)));
2471 } else {
2472 /* Exit from loop on first connection. */
2473 break;
2474 }
2475 }
2476
2477 if (cli->fd == -1) {
2478 TALLOC_FREE(frame);
2479 return map_nt_error_from_unix(errno);
2480 }
2481
2482 if (dest_ss) {
2483 *dest_ss = cli->dest_ss;
2484 }
2485
2486 set_socket_options(cli->fd, lp_socket_options());
2487
2488 TALLOC_FREE(frame);
2489 return NT_STATUS_OK;
2490 }
2491
2492 /**
2493 establishes a connection to after the negprot.
2494 @param output_cli A fully initialised cli structure, non-null only on success
2495 @param dest_host The netbios name of the remote host
2496 @param dest_ss (optional) The the destination IP, NULL for name based lookup
2497 @param port (optional) The destination port (0 for default)
2498 @param retry bool. Did this connection fail with a retryable error ?
2499
2500 */
2501 NTSTATUS cli_start_connection(struct cli_state **output_cli,
2502 const char *my_name,
2503 const char *dest_host,
2504 struct sockaddr_storage *dest_ss, int port,
2505 int signing_state, int flags,
2506 bool *retry)
2507 {
2508 NTSTATUS nt_status;
2509 struct nmb_name calling;
2510 struct nmb_name called;
2511 struct cli_state *cli;
2512 struct sockaddr_storage ss;
2513
2514 if (retry)
2515 *retry = False;
2516
2517 if (!my_name)
2518 my_name = global_myname();
2519
2520 if (!(cli = cli_initialise_ex(signing_state))) {
2521 return NT_STATUS_NO_MEMORY;
2522 }
2523
2524 make_nmb_name(&calling, my_name, 0x0);
2525 make_nmb_name(&called , dest_host, 0x20);
2526
2527 cli_set_port(cli, port);
2528 cli_set_timeout(cli, 10000); /* 10 seconds. */
2529
2530 if (dest_ss) {
2531 ss = *dest_ss;
2532 } else {
2533 zero_sockaddr(&ss);
2534 }
2535
2536 again:
2537
2538 DEBUG(3,("Connecting to host=%s\n", dest_host));
2539
2540 nt_status = cli_connect(cli, dest_host, &ss);
2541 if (!NT_STATUS_IS_OK(nt_status)) {
2542 char addr[INET6_ADDRSTRLEN];
2543 print_sockaddr(addr, sizeof(addr), &ss);
2544 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
2545 nmb_namestr(&called), addr, nt_errstr(nt_status) ));
2546 cli_shutdown(cli);
2547 return nt_status;
2548 }
2549
2550 if (retry)
2551 *retry = True;
2552
2553 if (!cli_session_request(cli, &calling, &called)) {
2554 char *p;
2555 DEBUG(1,("session request to %s failed (%s)\n",
2556 called.name, cli_errstr(cli)));
2557 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
2558 *p = 0;
2559 goto again;
2560 }
2561 if (strcmp(called.name, STAR_SMBSERVER)) {
2562 make_nmb_name(&called , STAR_SMBSERVER, 0x20);
2563 goto again;
2564 }
2565 return NT_STATUS_BAD_NETWORK_NAME;
2566 }
2567
2568 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
2569 cli->use_spnego = False;
2570 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
2571 cli->use_kerberos = True;
2572
2573 if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
2574 cli->use_kerberos) {
2575 cli->fallback_after_kerberos = true;
2576 }
2577 if (flags & CLI_FULL_CONNECTION_USE_CCACHE) {
2578 cli->use_ccache = true;
2579 }
2580
2581 nt_status = cli_negprot(cli);
2582 if (!NT_STATUS_IS_OK(nt_status)) {
2583 DEBUG(1, ("failed negprot: %s\n", nt_errstr(nt_status)));
2584 cli_shutdown(cli);
2585 return nt_status;
2586 }
2587
2588 *output_cli = cli;
2589 return NT_STATUS_OK;
2590 }
2591
2592
2593 /**
2594 establishes a connection right up to doing tconX, password specified.
2595 @param output_cli A fully initialised cli structure, non-null only on success
2596 @param dest_host The netbios name of the remote host
2597 @param dest_ip (optional) The the destination IP, NULL for name based lookup
2598 @param port (optional) The destination port (0 for default)
2599 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
2600 @param service_type The 'type' of serivice.
2601 @param user Username, unix string
2602 @param domain User's domain
2603 @param password User's password, unencrypted unix string.
2604 @param retry bool. Did this connection fail with a retryable error ?
2605 */
2606
2607 NTSTATUS cli_full_connection(struct cli_state **output_cli,
2608 const char *my_name,
2609 const char *dest_host,
2610 struct sockaddr_storage *dest_ss, int port,
2611 const char *service, const char *service_type,
2612 const char *user, const char *domain,
2613 const char *password, int flags,
2614 int signing_state,
2615 bool *retry)
2616 {
2617 NTSTATUS nt_status;
2618 struct cli_state *cli = NULL;
2619 int pw_len = password ? strlen(password)+1 : 0;
2620
2621 *output_cli = NULL;
2622
2623 if (password == NULL) {
2624 password = "";
2625 }
2626
2627 nt_status = cli_start_connection(&cli, my_name, dest_host,
2628 dest_ss, port, signing_state,
2629 flags, retry);
2630
2631 if (!NT_STATUS_IS_OK(nt_status)) {
2632 return nt_status;
2633 }
2634
2635 cli->use_oplocks = ((flags & CLI_FULL_CONNECTION_OPLOCKS) != 0);
2636 cli->use_level_II_oplocks =
2637 ((flags & CLI_FULL_CONNECTION_LEVEL_II_OPLOCKS) != 0);
2638
2639 nt_status = cli_session_setup(cli, user, password, pw_len, password,
2640 pw_len, domain);
2641 if (!NT_STATUS_IS_OK(nt_status)) {
2642
2643 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
2644 DEBUG(1,("failed session setup with %s\n",
2645 nt_errstr(nt_status)));
2646 cli_shutdown(cli);
2647 return nt_status;
2648 }
2649
2650 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
2651 if (!NT_STATUS_IS_OK(nt_status)) {
2652 DEBUG(1,("anonymous failed session setup with %s\n",
2653 nt_errstr(nt_status)));
2654 cli_shutdown(cli);
2655 return nt_status;
2656 }
2657 }
2658
2659 if (service) {
2660 nt_status = cli_tcon_andx(cli, service, service_type, password,
2661 pw_len);
2662 if (!NT_STATUS_IS_OK(nt_status)) {
2663 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
2664 cli_shutdown(cli);
2665 if (NT_STATUS_IS_OK(nt_status)) {
2666 nt_status = NT_STATUS_UNSUCCESSFUL;
2667 }
2668 return nt_status;
2669 }
2670 }
2671
2672 nt_status = cli_init_creds(cli, user, domain, password);
2673 if (!NT_STATUS_IS_OK(nt_status)) {
2674 cli_shutdown(cli);
2675 return nt_status;
2676 }
2677
2678 *output_cli = cli;
2679 return NT_STATUS_OK;
2680 }
2681
2682 /****************************************************************************
2683 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
2684 ****************************************************************************/
2685
2686 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
2687 struct sockaddr_storage *pdest_ss)
2688 {
2689 struct nmb_name calling, called;
2690
2691 make_nmb_name(&calling, srchost, 0x0);
2692
2693 /*
2694 * If the called name is an IP address
2695 * then use *SMBSERVER immediately.
2696 */
2697
2698 if(is_ipaddress(desthost)) {
2699 make_nmb_name(&called, STAR_SMBSERVER, 0x20);
2700 } else {
2701 make_nmb_name(&called, desthost, 0x20);
2702 }
2703
2704 if (!cli_session_request(*ppcli, &calling, &called)) {
2705 NTSTATUS status;
2706 struct nmb_name smbservername;
2707
2708 make_nmb_name(&smbservername, STAR_SMBSERVER, 0x20);
2709
2710 /*
2711 * If the name wasn't *SMBSERVER then
2712 * try with *SMBSERVER if the first name fails.
2713 */
2714
2715 if (nmb_name_equal(&called, &smbservername)) {
2716
2717 /*
2718 * The name used was *SMBSERVER, don't bother with another name.
2719 */
2720
2721 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
2722 with error %s.\n", desthost, cli_errstr(*ppcli) ));
2723 return False;
2724 }
2725
2726 /* Try again... */
2727 cli_shutdown(*ppcli);
2728
2729 *ppcli = cli_initialise();
2730 if (!*ppcli) {
2731 /* Out of memory... */
2732 return False;
2733 }
2734
2735 status = cli_connect(*ppcli, desthost, pdest_ss);
2736 if (!NT_STATUS_IS_OK(status) ||
2737 !cli_session_request(*ppcli, &calling, &smbservername)) {
2738 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
2739 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
2740 return False;
2741 }
2742 }
2743
2744 return True;
2745 }
2746
2747 /****************************************************************************
2748 Send an old style tcon.
2749 ****************************************************************************/
2750 NTSTATUS cli_raw_tcon(struct cli_state *cli,
2751 const char *service, const char *pass, const char *dev,
2752 uint16 *max_xmit, uint16 *tid)
2753 {
2754 char *p;
2755
2756 if (!lp_client_plaintext_auth() && (*pass)) {
2757 DEBUG(1, ("Server requested plaintext password but 'client "
2758 "plaintext auth' is disabled\n"));
2759 return NT_STATUS_ACCESS_DENIED;
2760 }
2761
2762 memset(cli->outbuf,'\0',smb_size);
2763 memset(cli->inbuf,'\0',smb_size);
2764
2765 cli_set_message(cli->outbuf, 0, 0, True);
2766 SCVAL(cli->outbuf,smb_com,SMBtcon);
2767 cli_setup_packet(cli);
2768
2769 p = smb_buf(cli->outbuf);
2770 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
2771 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
2772 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
2773
2774 cli_setup_bcc(cli, p);
2775
2776 cli_send_smb(cli);
2777 if (!cli_receive_smb(cli)) {
2778 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
2779 }
2780
2781 if (cli_is_error(cli)) {
2782 return cli_nt_error(cli);
2783 }
2784
2785 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
2786 *tid = SVAL(cli->inbuf, smb_vwv1);
2787
2788 return NT_STATUS_OK;
2789 }
2790
2791 /* Return a cli_state pointing at the IPC$ share for the given server */
2792
2793 struct cli_state *get_ipc_connect(char *server,
2794 struct sockaddr_storage *server_ss,
2795 const struct user_auth_info *user_info)
2796 {
2797 struct cli_state *cli;
2798 NTSTATUS nt_status;
2799 uint32_t flags = CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK;
2800
2801 if (user_info->use_kerberos) {
2802 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
2803 }
2804
2805 nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
2806 user_info->username ? user_info->username : "",
2807 lp_workgroup(),
2808 user_info->password ? user_info->password : "",
2809 flags,
2810 Undefined, NULL);
2811
2812 if (NT_STATUS_IS_OK(nt_status)) {
2813 return cli;
2814 } else if (is_ipaddress(server)) {
2815 /* windows 9* needs a correct NMB name for connections */
2816 fstring remote_name;
2817
2818 if (name_status_find("*", 0, 0, server_ss, remote_name)) {
2819 cli = get_ipc_connect(remote_name, server_ss, user_info);
2820 if (cli)
2821 return cli;
2822 }
2823 }
2824 return NULL;
2825 }
2826
2827 /*
2828 * Given the IP address of a master browser on the network, return its
2829 * workgroup and connect to it.
2830 *
2831 * This function is provided to allow additional processing beyond what
2832 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
2833 * browsers and obtain each master browsers' list of domains (in case the
2834 * first master browser is recently on the network and has not yet
2835 * synchronized with other master browsers and therefore does not yet have the
2836 * entire network browse list)
2837 */
2838
2839 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
2840 struct ip_service *mb_ip,
2841 const struct user_auth_info *user_info,
2842 char **pp_workgroup_out)
2843 {
2844 char addr[INET6_ADDRSTRLEN];
2845 fstring name;
2846 struct cli_state *cli;
2847 struct sockaddr_storage server_ss;
2848
2849 *pp_workgroup_out = NULL;
2850
2851 print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
2852 DEBUG(99, ("Looking up name of master browser %s\n",
2853 addr));
2854
2855 /*
2856 * Do a name status query to find out the name of the master browser.
2857 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
2858 * master browser will not respond to a wildcard query (or, at least,
2859 * an NT4 server acting as the domain master browser will not).
2860 *
2861 * We might be able to use ONLY the query on MSBROWSE, but that's not
2862 * yet been tested with all Windows versions, so until it is, leave
2863 * the original wildcard query as the first choice and fall back to
2864 * MSBROWSE if the wildcard query fails.
2865 */
2866 if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
2867 !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
2868
2869 DEBUG(99, ("Could not retrieve name status for %s\n",
2870 addr));
2871 return NULL;
2872 }
2873
2874 if (!find_master_ip(name, &server_ss)) {
2875 DEBUG(99, ("Could not find master ip for %s\n", name));
2876 return NULL;
2877 }
2878
2879 *pp_workgroup_out = talloc_strdup(ctx, name);
2880
2881 DEBUG(4, ("found master browser %s, %s\n", name, addr));
2882
2883 print_sockaddr(addr, sizeof(addr), &server_ss);
2884 cli = get_ipc_connect(addr, &server_ss, user_info);
2885
2886 return cli;
2887 }
2888
2889 /*
2890 * Return the IP address and workgroup of a master browser on the network, and
2891 * connect to it.
2892 */
2893
2894 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
2895 const struct user_auth_info *user_info,
2896 char **pp_workgroup_out)
2897 {
2898 struct ip_service *ip_list;
2899 struct cli_state *cli;
2900 int i, count;
2901
2902 *pp_workgroup_out = NULL;
2903
2904 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
2905
2906 /* Go looking for workgroups by broadcasting on the local network */
2907
2908 if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
2909 &count))) {
2910 DEBUG(99, ("No master browsers responded\n"));
2911 return False;
2912 }
2913
2914 for (i = 0; i < count; i++) {
2915 char addr[INET6_ADDRSTRLEN];
2916 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
2917 DEBUG(99, ("Found master browser %s\n", addr));
2918
2919 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
2920 user_info, pp_workgroup_out);
2921 if (cli)
2922 return(cli);
2923 }
2924
2925 return NULL;
2926 }
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