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Move initialize_async_io_handler() inside of smbd/aio.c.
[Samba.git] / source3 / libsmb / cliconnect.c
blob9ac3551d7ca81a2fb9bc7bf8a615e37738a215cf
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,
1004 global_myname(),
1005 lp_workgroup(),
1006 lp_client_ntlmv2_auth(),
1007 &state->ntlmssp_state);
1008 if (!NT_STATUS_IS_OK(status)) {
1009 goto fail;
1010 }
1011 ntlmssp_want_feature(state->ntlmssp_state,
1012 NTLMSSP_FEATURE_SESSION_KEY);
1013 if (cli->use_ccache) {
1014 ntlmssp_want_feature(state->ntlmssp_state,
1015 NTLMSSP_FEATURE_CCACHE);
1016 }
1017 status = ntlmssp_set_username(state->ntlmssp_state, user);
1018 if (!NT_STATUS_IS_OK(status)) {
1019 goto fail;
1020 }
1021 status = ntlmssp_set_domain(state->ntlmssp_state, domain);
1022 if (!NT_STATUS_IS_OK(status)) {
1023 goto fail;
1024 }
1025 status = ntlmssp_set_password(state->ntlmssp_state, pass);
1026 if (!NT_STATUS_IS_OK(status)) {
1027 goto fail;
1028 }
1029 status = ntlmssp_update(state->ntlmssp_state, data_blob_null,
1030 &blob_out);
1031 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1032 goto fail;
1033 }
1034
1035 state->blob_out = gen_negTokenInit(OID_NTLMSSP, blob_out);
1036 data_blob_free(&blob_out);
1037
1038 subreq = cli_sesssetup_blob_send(state, ev, cli, state->blob_out);
1039 if (tevent_req_nomem(subreq, req)) {
1040 return tevent_req_post(req, ev);
1041 }
1042 tevent_req_set_callback(subreq, cli_session_setup_ntlmssp_done, req);
1043 return req;
1044 fail:
1045 tevent_req_nterror(req, status);
1046 return tevent_req_post(req, ev);
1047 }
1048
1049 static void cli_session_setup_ntlmssp_done(struct tevent_req *subreq)
1050 {
1051 struct tevent_req *req = tevent_req_callback_data(
1052 subreq, struct tevent_req);
1053 struct cli_session_setup_ntlmssp_state *state = tevent_req_data(
1054 req, struct cli_session_setup_ntlmssp_state);
1055 DATA_BLOB blob_in, msg_in, blob_out;
1056 char *inbuf = NULL;
1057 bool parse_ret;
1058 NTSTATUS status;
1059
1060 status = cli_sesssetup_blob_recv(subreq, talloc_tos(), &blob_in,
1061 &inbuf);
1062 TALLOC_FREE(subreq);
1063 data_blob_free(&state->blob_out);
1064
1065 if (NT_STATUS_IS_OK(status)) {
1066 if (state->cli->server_domain[0] == '\0') {
1067 fstrcpy(state->cli->server_domain,
1068 state->ntlmssp_state->server.netbios_domain);
1069 }
1070 cli_set_session_key(
1071 state->cli, state->ntlmssp_state->session_key);
1072
1073 if (cli_simple_set_signing(
1074 state->cli, state->ntlmssp_state->session_key,
1075 data_blob_null)
1076 && !cli_check_sign_mac(state->cli, inbuf, 1)) {
1077 TALLOC_FREE(subreq);
1078 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1079 return;
1080 }
1081 TALLOC_FREE(subreq);
1082 ntlmssp_end(&state->ntlmssp_state);
1083 tevent_req_done(req);
1084 return;
1085 }
1086 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1087 tevent_req_nterror(req, status);
1088 return;
1089 }
1090
1091 if (blob_in.length == 0) {
1092 tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
1093 return;
1094 }
1095
1096 if ((state->turn == 1)
1097 && NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1098 DATA_BLOB tmp_blob = data_blob_null;
1099 /* the server might give us back two challenges */
1100 parse_ret = spnego_parse_challenge(blob_in, &msg_in,
1101 &tmp_blob);
1102 data_blob_free(&tmp_blob);
1103 } else {
1104 parse_ret = spnego_parse_auth_response(blob_in, status,
1105 OID_NTLMSSP, &msg_in);
1106 }
1107 state->turn += 1;
1108
1109 if (!parse_ret) {
1110 DEBUG(3,("Failed to parse auth response\n"));
1111 if (NT_STATUS_IS_OK(status)
1112 || NT_STATUS_EQUAL(status,
1113 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1114 tevent_req_nterror(
1115 req, NT_STATUS_INVALID_NETWORK_RESPONSE);
1116 return;
1117 }
1118 }
1119
1120 status = ntlmssp_update(state->ntlmssp_state, msg_in, &blob_out);
1121
1122 if (!NT_STATUS_IS_OK(status)
1123 && !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1124 TALLOC_FREE(subreq);
1125 ntlmssp_end(&state->ntlmssp_state);
1126 tevent_req_nterror(req, status);
1127 return;
1128 }
1129
1130 state->blob_out = spnego_gen_auth(blob_out);
1131 TALLOC_FREE(subreq);
1132 if (tevent_req_nomem(state->blob_out.data, req)) {
1133 return;
1134 }
1135
1136 subreq = cli_sesssetup_blob_send(state, state->ev, state->cli,
1137 state->blob_out);
1138 if (tevent_req_nomem(subreq, req)) {
1139 return;
1140 }
1141 tevent_req_set_callback(subreq, cli_session_setup_ntlmssp_done, req);
1142 }
1143
1144 static NTSTATUS cli_session_setup_ntlmssp_recv(struct tevent_req *req)
1145 {
1146 struct cli_session_setup_ntlmssp_state *state = tevent_req_data(
1147 req, struct cli_session_setup_ntlmssp_state);
1148 NTSTATUS status;
1149
1150 if (tevent_req_is_nterror(req, &status)) {
1151 state->cli->vuid = 0;
1152 return status;
1153 }
1154 return NT_STATUS_OK;
1155 }
1156
1157 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli,
1158 const char *user,
1159 const char *pass,
1160 const char *domain)
1161 {
1162 struct tevent_context *ev;
1163 struct tevent_req *req;
1164 NTSTATUS status = NT_STATUS_NO_MEMORY;
1165
1166 if (cli_has_async_calls(cli)) {
1167 return NT_STATUS_INVALID_PARAMETER;
1168 }
1169 ev = tevent_context_init(talloc_tos());
1170 if (ev == NULL) {
1171 goto fail;
1172 }
1173 req = cli_session_setup_ntlmssp_send(ev, ev, cli, user, pass, domain);
1174 if (req == NULL) {
1175 goto fail;
1176 }
1177 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1178 goto fail;
1179 }
1180 status = cli_session_setup_ntlmssp_recv(req);
1181 fail:
1182 TALLOC_FREE(ev);
1183 if (!NT_STATUS_IS_OK(status)) {
1184 cli_set_error(cli, status);
1185 }
1186 return status;
1187 }
1188
1189 /****************************************************************************
1190 Do a spnego encrypted session setup.
1191
1192 user_domain: The shortname of the domain the user/machine is a member of.
1193 dest_realm: The realm we're connecting to, if NULL we use our default realm.
1194 ****************************************************************************/
1195
1196 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
1197 const char *pass, const char *user_domain,
1198 const char * dest_realm)
1199 {
1200 char *principal = NULL;
1201 char *OIDs[ASN1_MAX_OIDS];
1202 int i;
1203 DATA_BLOB blob;
1204 const char *p = NULL;
1205 char *account = NULL;
1206 NTSTATUS status;
1207
1208 DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
1209
1210 /* the server might not even do spnego */
1211 if (cli->secblob.length <= 16) {
1212 DEBUG(3,("server didn't supply a full spnego negprot\n"));
1213 goto ntlmssp;
1214 }
1215
1216 #if 0
1217 file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
1218 #endif
1219
1220 /* there is 16 bytes of GUID before the real spnego packet starts */
1221 blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
1222
1223 /* The server sent us the first part of the SPNEGO exchange in the
1224 * negprot reply. It is WRONG to depend on the principal sent in the
1225 * negprot reply, but right now we do it. If we don't receive one,
1226 * we try to best guess, then fall back to NTLM. */
1227 if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
1228 data_blob_free(&blob);
1229 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
1230 }
1231 data_blob_free(&blob);
1232
1233 /* make sure the server understands kerberos */
1234 for (i=0;OIDs[i];i++) {
1235 if (i == 0)
1236 DEBUG(3,("got OID=%s\n", OIDs[i]));
1237 else
1238 DEBUGADD(3,("got OID=%s\n", OIDs[i]));
1239 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
1240 strcmp(OIDs[i], OID_KERBEROS5) == 0) {
1241 cli->got_kerberos_mechanism = True;
1242 }
1243 talloc_free(OIDs[i]);
1244 }
1245
1246 DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
1247
1248 status = cli_set_username(cli, user);
1249 if (!NT_STATUS_IS_OK(status)) {
1250 return ADS_ERROR_NT(status);
1251 }
1252
1253 #ifdef HAVE_KRB5
1254 /* If password is set we reauthenticate to kerberos server
1255 * and do not store results */
1256
1257 if (cli->got_kerberos_mechanism && cli->use_kerberos) {
1258 ADS_STATUS rc;
1259
1260 if (pass && *pass) {
1261 int ret;
1262
1263 use_in_memory_ccache();
1264 ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
1265
1266 if (ret){
1267 TALLOC_FREE(principal);
1268 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
1269 if (cli->fallback_after_kerberos)
1270 goto ntlmssp;
1271 return ADS_ERROR_KRB5(ret);
1272 }
1273 }
1274
1275 /* If we get a bad principal, try to guess it if
1276 we have a valid host NetBIOS name.
1277 */
1278 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
1279 TALLOC_FREE(principal);
1280 }
1281
1282 if (principal == NULL &&
1283 !is_ipaddress(cli->desthost) &&
1284 !strequal(STAR_SMBSERVER,
1285 cli->desthost)) {
1286 char *realm = NULL;
1287 char *machine = NULL;
1288 char *host = NULL;
1289 DEBUG(3,("cli_session_setup_spnego: got a "
1290 "bad server principal, trying to guess ...\n"));
1291
1292 host = strchr_m(cli->desthost, '.');
1293 if (host) {
1294 /* We had a '.' in the name. */
1295 machine = SMB_STRNDUP(cli->desthost,
1296 host - cli->desthost);
1297 } else {
1298 machine = SMB_STRDUP(cli->desthost);
1299 }
1300 if (machine == NULL) {
1301 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1302 }
1303
1304 if (dest_realm) {
1305 realm = SMB_STRDUP(dest_realm);
1306 strupper_m(realm);
1307 } else {
1308 if (host) {
1309 /* DNS name. */
1310 realm = kerberos_get_realm_from_hostname(cli->desthost);
1311 } else {
1312 /* NetBIOS name - use our realm. */
1313 realm = kerberos_get_default_realm_from_ccache();
1314 }
1315 }
1316
1317 if (realm && *realm) {
1318 if (host) {
1319 /* DNS name. */
1320 principal = talloc_asprintf(talloc_tos(),
1321 "cifs/%s@%s",
1322 cli->desthost,
1323 realm);
1324 } else {
1325 /* NetBIOS name, use machine account. */
1326 principal = talloc_asprintf(talloc_tos(),
1327 "%s$@%s",
1328 machine,
1329 realm);
1330 }
1331 if (!principal) {
1332 SAFE_FREE(machine);
1333 SAFE_FREE(realm);
1334 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1335 }
1336 DEBUG(3,("cli_session_setup_spnego: guessed "
1337 "server principal=%s\n",
1338 principal ? principal : "<null>"));
1339 }
1340 SAFE_FREE(machine);
1341 SAFE_FREE(realm);
1342 }
1343
1344 if (principal) {
1345 rc = cli_session_setup_kerberos(cli, principal,
1346 dest_realm);
1347 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
1348 TALLOC_FREE(principal);
1349 return rc;
1350 }
1351 }
1352 }
1353 #endif
1354
1355 TALLOC_FREE(principal);
1356
1357 ntlmssp:
1358
1359 account = talloc_strdup(talloc_tos(), user);
1360 if (!account) {
1361 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1362 }
1363
1364 /* when falling back to ntlmssp while authenticating with a machine
1365 * account strip off the realm - gd */
1366
1367 if ((p = strchr_m(user, '@')) != NULL) {
1368 account[PTR_DIFF(p,user)] = '\0';
1369 }
1370
1371 return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, account, pass, user_domain));
1372 }
1373
1374 /****************************************************************************
1375 Send a session setup. The username and workgroup is in UNIX character
1376 format and must be converted to DOS codepage format before sending. If the
1377 password is in plaintext, the same should be done.
1378 ****************************************************************************/
1379
1380 NTSTATUS cli_session_setup(struct cli_state *cli,
1381 const char *user,
1382 const char *pass, int passlen,
1383 const char *ntpass, int ntpasslen,
1384 const char *workgroup)
1385 {
1386 char *p;
1387 fstring user2;
1388
1389 if (user) {
1390 fstrcpy(user2, user);
1391 } else {
1392 user2[0] ='\0';
1393 }
1394
1395 if (!workgroup) {
1396 workgroup = "";
1397 }
1398
1399 /* allow for workgroups as part of the username */
1400 if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
1401 (p=strchr_m(user2,*lp_winbind_separator()))) {
1402 *p = 0;
1403 user = p+1;
1404 workgroup = user2;
1405 }
1406
1407 if (cli->protocol < PROTOCOL_LANMAN1) {
1408 return NT_STATUS_OK;
1409 }
1410
1411 /* now work out what sort of session setup we are going to
1412 do. I have split this into separate functions to make the
1413 flow a bit easier to understand (tridge) */
1414
1415 /* if its an older server then we have to use the older request format */
1416
1417 if (cli->protocol < PROTOCOL_NT1) {
1418 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
1419 DEBUG(1, ("Server requested LM password but 'client lanman auth'"
1420 " is disabled\n"));
1421 return NT_STATUS_ACCESS_DENIED;
1422 }
1423
1424 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
1425 !lp_client_plaintext_auth() && (*pass)) {
1426 DEBUG(1, ("Server requested plaintext password but "
1427 "'client plaintext auth' is disabled\n"));
1428 return NT_STATUS_ACCESS_DENIED;
1429 }
1430
1431 return cli_session_setup_lanman2(cli, user, pass, passlen,
1432 workgroup);
1433 }
1434
1435 /* if no user is supplied then we have to do an anonymous connection.
1436 passwords are ignored */
1437
1438 if (!user || !*user)
1439 return cli_session_setup_guest(cli);
1440
1441 /* if the server is share level then send a plaintext null
1442 password at this point. The password is sent in the tree
1443 connect */
1444
1445 if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1446 return cli_session_setup_plaintext(cli, user, "", workgroup);
1447
1448 /* if the server doesn't support encryption then we have to use
1449 plaintext. The second password is ignored */
1450
1451 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1452 if (!lp_client_plaintext_auth() && (*pass)) {
1453 DEBUG(1, ("Server requested plaintext password but "
1454 "'client plaintext auth' is disabled\n"));
1455 return NT_STATUS_ACCESS_DENIED;
1456 }
1457 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1458 }
1459
1460 /* if the server supports extended security then use SPNEGO */
1461
1462 if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1463 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass,
1464 workgroup, NULL);
1465 if (!ADS_ERR_OK(status)) {
1466 DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1467 return ads_ntstatus(status);
1468 }
1469 } else {
1470 NTSTATUS status;
1471
1472 /* otherwise do a NT1 style session setup */
1473 status = cli_session_setup_nt1(cli, user, pass, passlen,
1474 ntpass, ntpasslen, workgroup);
1475 if (!NT_STATUS_IS_OK(status)) {
1476 DEBUG(3,("cli_session_setup: NT1 session setup "
1477 "failed: %s\n", nt_errstr(status)));
1478 return status;
1479 }
1480 }
1481
1482 if (strstr(cli->server_type, "Samba")) {
1483 cli->is_samba = True;
1484 }
1485
1486 return NT_STATUS_OK;
1487 }
1488
1489 /****************************************************************************
1490 Send a uloggoff.
1491 *****************************************************************************/
1492
1493 struct cli_ulogoff_state {
1494 struct cli_state *cli;
1495 uint16_t vwv[2];
1496 };
1497
1498 static void cli_ulogoff_done(struct tevent_req *subreq);
1499
1500 struct tevent_req *cli_ulogoff_send(TALLOC_CTX *mem_ctx,
1501 struct tevent_context *ev,
1502 struct cli_state *cli)
1503 {
1504 struct tevent_req *req, *subreq;
1505 struct cli_ulogoff_state *state;
1506
1507 req = tevent_req_create(mem_ctx, &state, struct cli_ulogoff_state);
1508 if (req == NULL) {
1509 return NULL;
1510 }
1511 state->cli = cli;
1512
1513 SCVAL(state->vwv+0, 0, 0xFF);
1514 SCVAL(state->vwv+1, 0, 0);
1515 SSVAL(state->vwv+2, 0, 0);
1516
1517 subreq = cli_smb_send(state, ev, cli, SMBulogoffX, 0, 2, state->vwv,
1518 0, NULL);
1519 if (tevent_req_nomem(subreq, req)) {
1520 return tevent_req_post(req, ev);
1521 }
1522 tevent_req_set_callback(subreq, cli_ulogoff_done, req);
1523 return req;
1524 }
1525
1526 static void cli_ulogoff_done(struct tevent_req *subreq)
1527 {
1528 struct tevent_req *req = tevent_req_callback_data(
1529 subreq, struct tevent_req);
1530 struct cli_ulogoff_state *state = tevent_req_data(
1531 req, struct cli_ulogoff_state);
1532 NTSTATUS status;
1533
1534 status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
1535 if (!NT_STATUS_IS_OK(status)) {
1536 tevent_req_nterror(req, status);
1537 return;
1538 }
1539 state->cli->vuid = -1;
1540 tevent_req_done(req);
1541 }
1542
1543 NTSTATUS cli_ulogoff_recv(struct tevent_req *req)
1544 {
1545 return tevent_req_simple_recv_ntstatus(req);
1546 }
1547
1548 NTSTATUS cli_ulogoff(struct cli_state *cli)
1549 {
1550 struct tevent_context *ev;
1551 struct tevent_req *req;
1552 NTSTATUS status = NT_STATUS_NO_MEMORY;
1553
1554 if (cli_has_async_calls(cli)) {
1555 return NT_STATUS_INVALID_PARAMETER;
1556 }
1557 ev = tevent_context_init(talloc_tos());
1558 if (ev == NULL) {
1559 goto fail;
1560 }
1561 req = cli_ulogoff_send(ev, ev, cli);
1562 if (req == NULL) {
1563 goto fail;
1564 }
1565 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1566 goto fail;
1567 }
1568 status = cli_ulogoff_recv(req);
1569 fail:
1570 TALLOC_FREE(ev);
1571 if (!NT_STATUS_IS_OK(status)) {
1572 cli_set_error(cli, status);
1573 }
1574 return status;
1575 }
1576
1577 /****************************************************************************
1578 Send a tconX.
1579 ****************************************************************************/
1580
1581 struct cli_tcon_andx_state {
1582 struct cli_state *cli;
1583 uint16_t vwv[4];
1584 struct iovec bytes;
1585 };
1586
1587 static void cli_tcon_andx_done(struct tevent_req *subreq);
1588
1589 struct tevent_req *cli_tcon_andx_create(TALLOC_CTX *mem_ctx,
1590 struct event_context *ev,
1591 struct cli_state *cli,
1592 const char *share, const char *dev,
1593 const char *pass, int passlen,
1594 struct tevent_req **psmbreq)
1595 {
1596 struct tevent_req *req, *subreq;
1597 struct cli_tcon_andx_state *state;
1598 fstring pword;
1599 uint16_t *vwv;
1600 char *tmp = NULL;
1601 uint8_t *bytes;
1602
1603 *psmbreq = NULL;
1604
1605 req = tevent_req_create(mem_ctx, &state, struct cli_tcon_andx_state);
1606 if (req == NULL) {
1607 return NULL;
1608 }
1609 state->cli = cli;
1610 vwv = state->vwv;
1611
1612 fstrcpy(cli->share, share);
1613
1614 /* in user level security don't send a password now */
1615 if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1616 passlen = 1;
1617 pass = "";
1618 } else if (pass == NULL) {
1619 DEBUG(1, ("Server not using user level security and no "
1620 "password supplied.\n"));
1621 goto access_denied;
1622 }
1623
1624 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1625 *pass && passlen != 24) {
1626 if (!lp_client_lanman_auth()) {
1627 DEBUG(1, ("Server requested LANMAN password "
1628 "(share-level security) but "
1629 "'client lanman auth' is disabled\n"));
1630 goto access_denied;
1631 }
1632
1633 /*
1634 * Non-encrypted passwords - convert to DOS codepage before
1635 * encryption.
1636 */
1637 passlen = 24;
1638 SMBencrypt(pass, cli->secblob.data, (uchar *)pword);
1639 } else {
1640 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL
1641 |NEGOTIATE_SECURITY_CHALLENGE_RESPONSE))
1642 == 0) {
1643 if (!lp_client_plaintext_auth() && (*pass)) {
1644 DEBUG(1, ("Server requested plaintext "
1645 "password but 'client plaintext "
1646 "auth' is disabled\n"));
1647 goto access_denied;
1648 }
1649
1650 /*
1651 * Non-encrypted passwords - convert to DOS codepage
1652 * before using.
1653 */
1654 passlen = clistr_push(cli, pword, pass, sizeof(pword),
1655 STR_TERMINATE);
1656 if (passlen == -1) {
1657 DEBUG(1, ("clistr_push(pword) failed\n"));
1658 goto access_denied;
1659 }
1660 } else {
1661 if (passlen) {
1662 memcpy(pword, pass, passlen);
1663 }
1664 }
1665 }
1666
1667 SCVAL(vwv+0, 0, 0xFF);
1668 SCVAL(vwv+0, 1, 0);
1669 SSVAL(vwv+1, 0, 0);
1670 SSVAL(vwv+2, 0, TCONX_FLAG_EXTENDED_RESPONSE);
1671 SSVAL(vwv+3, 0, passlen);
1672
1673 if (passlen) {
1674 bytes = (uint8_t *)talloc_memdup(state, pword, passlen);
1675 } else {
1676 bytes = talloc_array(state, uint8_t, 0);
1677 }
1678
1679 /*
1680 * Add the sharename
1681 */
1682 tmp = talloc_asprintf_strupper_m(talloc_tos(), "\\\\%s\\%s",
1683 cli->desthost, share);
1684 if (tmp == NULL) {
1685 TALLOC_FREE(req);
1686 return NULL;
1687 }
1688 bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), tmp, strlen(tmp)+1,
1689 NULL);
1690 TALLOC_FREE(tmp);
1691
1692 /*
1693 * Add the devicetype
1694 */
1695 tmp = talloc_strdup_upper(talloc_tos(), dev);
1696 if (tmp == NULL) {
1697 TALLOC_FREE(req);
1698 return NULL;
1699 }
1700 bytes = smb_bytes_push_str(bytes, false, tmp, strlen(tmp)+1, NULL);
1701 TALLOC_FREE(tmp);
1702
1703 if (bytes == NULL) {
1704 TALLOC_FREE(req);
1705 return NULL;
1706 }
1707
1708 state->bytes.iov_base = (void *)bytes;
1709 state->bytes.iov_len = talloc_get_size(bytes);
1710
1711 subreq = cli_smb_req_create(state, ev, cli, SMBtconX, 0, 4, vwv,
1712 1, &state->bytes);
1713 if (subreq == NULL) {
1714 TALLOC_FREE(req);
1715 return NULL;
1716 }
1717 tevent_req_set_callback(subreq, cli_tcon_andx_done, req);
1718 *psmbreq = subreq;
1719 return req;
1720
1721 access_denied:
1722 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
1723 return tevent_req_post(req, ev);
1724 }
1725
1726 struct tevent_req *cli_tcon_andx_send(TALLOC_CTX *mem_ctx,
1727 struct event_context *ev,
1728 struct cli_state *cli,
1729 const char *share, const char *dev,
1730 const char *pass, int passlen)
1731 {
1732 struct tevent_req *req, *subreq;
1733 NTSTATUS status;
1734
1735 req = cli_tcon_andx_create(mem_ctx, ev, cli, share, dev, pass, passlen,
1736 &subreq);
1737 if (req == NULL) {
1738 return NULL;
1739 }
1740 if (subreq == NULL) {
1741 return req;
1742 }
1743 status = cli_smb_req_send(subreq);
1744 if (!NT_STATUS_IS_OK(status)) {
1745 tevent_req_nterror(req, status);
1746 return tevent_req_post(req, ev);
1747 }
1748 return req;
1749 }
1750
1751 static void cli_tcon_andx_done(struct tevent_req *subreq)
1752 {
1753 struct tevent_req *req = tevent_req_callback_data(
1754 subreq, struct tevent_req);
1755 struct cli_tcon_andx_state *state = tevent_req_data(
1756 req, struct cli_tcon_andx_state);
1757 struct cli_state *cli = state->cli;
1758 uint8_t *in;
1759 char *inbuf;
1760 uint8_t wct;
1761 uint16_t *vwv;
1762 uint32_t num_bytes;
1763 uint8_t *bytes;
1764 NTSTATUS status;
1765
1766 status = cli_smb_recv(subreq, state, &in, 0, &wct, &vwv,
1767 &num_bytes, &bytes);
1768 TALLOC_FREE(subreq);
1769 if (!NT_STATUS_IS_OK(status)) {
1770 tevent_req_nterror(req, status);
1771 return;
1772 }
1773
1774 inbuf = (char *)in;
1775
1776 clistr_pull(inbuf, cli->dev, bytes, sizeof(fstring), num_bytes,
1777 STR_TERMINATE|STR_ASCII);
1778
1779 if ((cli->protocol >= PROTOCOL_NT1) && (num_bytes == 3)) {
1780 /* almost certainly win95 - enable bug fixes */
1781 cli->win95 = True;
1782 }
1783
1784 /*
1785 * Make sure that we have the optional support 16-bit field. WCT > 2.
1786 * Avoids issues when connecting to Win9x boxes sharing files
1787 */
1788
1789 cli->dfsroot = false;
1790
1791 if ((wct > 2) && (cli->protocol >= PROTOCOL_LANMAN2)) {
1792 cli->dfsroot = ((SVAL(vwv+2, 0) & SMB_SHARE_IN_DFS) != 0);
1793 }
1794
1795 cli->cnum = SVAL(inbuf,smb_tid);
1796 tevent_req_done(req);
1797 }
1798
1799 NTSTATUS cli_tcon_andx_recv(struct tevent_req *req)
1800 {
1801 return tevent_req_simple_recv_ntstatus(req);
1802 }
1803
1804 NTSTATUS cli_tcon_andx(struct cli_state *cli, const char *share,
1805 const char *dev, const char *pass, int passlen)
1806 {
1807 TALLOC_CTX *frame = talloc_stackframe();
1808 struct event_context *ev;
1809 struct tevent_req *req;
1810 NTSTATUS status = NT_STATUS_OK;
1811
1812 if (cli_has_async_calls(cli)) {
1813 /*
1814 * Can't use sync call while an async call is in flight
1815 */
1816 status = NT_STATUS_INVALID_PARAMETER;
1817 goto fail;
1818 }
1819
1820 ev = event_context_init(frame);
1821 if (ev == NULL) {
1822 status = NT_STATUS_NO_MEMORY;
1823 goto fail;
1824 }
1825
1826 req = cli_tcon_andx_send(frame, ev, cli, share, dev, pass, passlen);
1827 if (req == NULL) {
1828 status = NT_STATUS_NO_MEMORY;
1829 goto fail;
1830 }
1831
1832 if (!tevent_req_poll(req, ev)) {
1833 status = map_nt_error_from_unix(errno);
1834 goto fail;
1835 }
1836
1837 status = cli_tcon_andx_recv(req);
1838 fail:
1839 TALLOC_FREE(frame);
1840 if (!NT_STATUS_IS_OK(status)) {
1841 cli_set_error(cli, status);
1842 }
1843 return status;
1844 }
1845
1846 /****************************************************************************
1847 Send a tree disconnect.
1848 ****************************************************************************/
1849
1850 struct cli_tdis_state {
1851 struct cli_state *cli;
1852 };
1853
1854 static void cli_tdis_done(struct tevent_req *subreq);
1855
1856 struct tevent_req *cli_tdis_send(TALLOC_CTX *mem_ctx,
1857 struct tevent_context *ev,
1858 struct cli_state *cli)
1859 {
1860 struct tevent_req *req, *subreq;
1861 struct cli_tdis_state *state;
1862
1863 req = tevent_req_create(mem_ctx, &state, struct cli_tdis_state);
1864 if (req == NULL) {
1865 return NULL;
1866 }
1867 state->cli = cli;
1868
1869 subreq = cli_smb_send(state, ev, cli, SMBtdis, 0, 0, NULL, 0, NULL);
1870 if (tevent_req_nomem(subreq, req)) {
1871 return tevent_req_post(req, ev);
1872 }
1873 tevent_req_set_callback(subreq, cli_tdis_done, req);
1874 return req;
1875 }
1876
1877 static void cli_tdis_done(struct tevent_req *subreq)
1878 {
1879 struct tevent_req *req = tevent_req_callback_data(
1880 subreq, struct tevent_req);
1881 struct cli_tdis_state *state = tevent_req_data(
1882 req, struct cli_tdis_state);
1883 NTSTATUS status;
1884
1885 status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
1886 TALLOC_FREE(subreq);
1887 if (!NT_STATUS_IS_OK(status)) {
1888 tevent_req_nterror(req, status);
1889 return;
1890 }
1891 state->cli->cnum = -1;
1892 tevent_req_done(req);
1893 }
1894
1895 NTSTATUS cli_tdis_recv(struct tevent_req *req)
1896 {
1897 return tevent_req_simple_recv_ntstatus(req);
1898 }
1899
1900 NTSTATUS cli_tdis(struct cli_state *cli)
1901 {
1902 struct tevent_context *ev;
1903 struct tevent_req *req;
1904 NTSTATUS status = NT_STATUS_NO_MEMORY;
1905
1906 if (cli_has_async_calls(cli)) {
1907 return NT_STATUS_INVALID_PARAMETER;
1908 }
1909 ev = tevent_context_init(talloc_tos());
1910 if (ev == NULL) {
1911 goto fail;
1912 }
1913 req = cli_tdis_send(ev, ev, cli);
1914 if (req == NULL) {
1915 goto fail;
1916 }
1917 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
1918 goto fail;
1919 }
1920 status = cli_tdis_recv(req);
1921 fail:
1922 TALLOC_FREE(ev);
1923 if (!NT_STATUS_IS_OK(status)) {
1924 cli_set_error(cli, status);
1925 }
1926 return status;
1927 }
1928
1929 /****************************************************************************
1930 Send a negprot command.
1931 ****************************************************************************/
1932
1933 void cli_negprot_sendsync(struct cli_state *cli)
1934 {
1935 char *p;
1936 int numprots;
1937
1938 if (cli->protocol < PROTOCOL_NT1)
1939 cli->use_spnego = False;
1940
1941 memset(cli->outbuf,'\0',smb_size);
1942
1943 /* setup the protocol strings */
1944 cli_set_message(cli->outbuf,0,0,True);
1945
1946 p = smb_buf(cli->outbuf);
1947 for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1948 if (prots[numprots].prot > cli->protocol) {
1949 break;
1950 }
1951 *p++ = 2;
1952 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1953 }
1954
1955 SCVAL(cli->outbuf,smb_com,SMBnegprot);
1956 cli_setup_bcc(cli, p);
1957 cli_setup_packet(cli);
1958
1959 SCVAL(smb_buf(cli->outbuf),0,2);
1960
1961 cli_send_smb(cli);
1962 }
1963
1964 /****************************************************************************
1965 Send a negprot command.
1966 ****************************************************************************/
1967
1968 struct cli_negprot_state {
1969 struct cli_state *cli;
1970 };
1971
1972 static void cli_negprot_done(struct tevent_req *subreq);
1973
1974 struct tevent_req *cli_negprot_send(TALLOC_CTX *mem_ctx,
1975 struct event_context *ev,
1976 struct cli_state *cli)
1977 {
1978 struct tevent_req *req, *subreq;
1979 struct cli_negprot_state *state;
1980 uint8_t *bytes = NULL;
1981 int numprots;
1982 uint16_t cnum;
1983
1984 req = tevent_req_create(mem_ctx, &state, struct cli_negprot_state);
1985 if (req == NULL) {
1986 return NULL;
1987 }
1988 state->cli = cli;
1989
1990 if (cli->protocol < PROTOCOL_NT1)
1991 cli->use_spnego = False;
1992
1993 /* setup the protocol strings */
1994 for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1995 uint8_t c = 2;
1996 if (prots[numprots].prot > cli->protocol) {
1997 break;
1998 }
1999 bytes = (uint8_t *)talloc_append_blob(
2000 state, bytes, data_blob_const(&c, sizeof(c)));
2001 if (tevent_req_nomem(bytes, req)) {
2002 return tevent_req_post(req, ev);
2003 }
2004 bytes = smb_bytes_push_str(bytes, false,
2005 prots[numprots].name,
2006 strlen(prots[numprots].name)+1,
2007 NULL);
2008 if (tevent_req_nomem(bytes, req)) {
2009 return tevent_req_post(req, ev);
2010 }
2011 }
2012
2013 cnum = cli->cnum;
2014
2015 cli->cnum = 0;
2016 subreq = cli_smb_send(state, ev, cli, SMBnegprot, 0, 0, NULL,
2017 talloc_get_size(bytes), bytes);
2018 cli->cnum = cnum;
2019
2020 if (tevent_req_nomem(subreq, req)) {
2021 return tevent_req_post(req, ev);
2022 }
2023 tevent_req_set_callback(subreq, cli_negprot_done, req);
2024 return req;
2025 }
2026
2027 static void cli_negprot_done(struct tevent_req *subreq)
2028 {
2029 struct tevent_req *req = tevent_req_callback_data(
2030 subreq, struct tevent_req);
2031 struct cli_negprot_state *state = tevent_req_data(
2032 req, struct cli_negprot_state);
2033 struct cli_state *cli = state->cli;
2034 uint8_t wct;
2035 uint16_t *vwv;
2036 uint32_t num_bytes;
2037 uint8_t *bytes;
2038 NTSTATUS status;
2039 uint16_t protnum;
2040 uint8_t *inbuf;
2041
2042 status = cli_smb_recv(subreq, state, &inbuf, 1, &wct, &vwv,
2043 &num_bytes, &bytes);
2044 TALLOC_FREE(subreq);
2045 if (!NT_STATUS_IS_OK(status)) {
2046 tevent_req_nterror(req, status);
2047 return;
2048 }
2049
2050 protnum = SVAL(vwv, 0);
2051
2052 if ((protnum >= ARRAY_SIZE(prots))
2053 || (prots[protnum].prot > cli->protocol)) {
2054 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
2055 return;
2056 }
2057
2058 cli->protocol = prots[protnum].prot;
2059
2060 if ((cli->protocol < PROTOCOL_NT1) &&
2061 client_is_signing_mandatory(cli)) {
2062 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
2063 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
2064 return;
2065 }
2066
2067 if (cli->protocol >= PROTOCOL_NT1) {
2068 struct timespec ts;
2069 bool negotiated_smb_signing = false;
2070
2071 /* NT protocol */
2072 cli->sec_mode = CVAL(vwv + 1, 0);
2073 cli->max_mux = SVAL(vwv + 1, 1);
2074 cli->max_xmit = IVAL(vwv + 3, 1);
2075 cli->sesskey = IVAL(vwv + 7, 1);
2076 cli->serverzone = SVALS(vwv + 15, 1);
2077 cli->serverzone *= 60;
2078 /* this time arrives in real GMT */
2079 ts = interpret_long_date(((char *)(vwv+11))+1);
2080 cli->servertime = ts.tv_sec;
2081 cli->secblob = data_blob(bytes, num_bytes);
2082 cli->capabilities = IVAL(vwv + 9, 1);
2083 if (cli->capabilities & CAP_RAW_MODE) {
2084 cli->readbraw_supported = True;
2085 cli->writebraw_supported = True;
2086 }
2087 /* work out if they sent us a workgroup */
2088 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
2089 smb_buflen(cli->inbuf) > 8) {
2090 clistr_pull(cli->inbuf, cli->server_domain,
2091 bytes+8, sizeof(cli->server_domain),
2092 num_bytes-8,
2093 STR_UNICODE|STR_NOALIGN);
2094 }
2095
2096 /*
2097 * As signing is slow we only turn it on if either the client or
2098 * the server require it. JRA.
2099 */
2100
2101 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
2102 /* Fail if server says signing is mandatory and we don't want to support it. */
2103 if (!client_is_signing_allowed(cli)) {
2104 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
2105 tevent_req_nterror(req,
2106 NT_STATUS_ACCESS_DENIED);
2107 return;
2108 }
2109 negotiated_smb_signing = true;
2110 } else if (client_is_signing_mandatory(cli) && client_is_signing_allowed(cli)) {
2111 /* Fail if client says signing is mandatory and the server doesn't support it. */
2112 if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
2113 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
2114 tevent_req_nterror(req,
2115 NT_STATUS_ACCESS_DENIED);
2116 return;
2117 }
2118 negotiated_smb_signing = true;
2119 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
2120 negotiated_smb_signing = true;
2121 }
2122
2123 if (negotiated_smb_signing) {
2124 cli_set_signing_negotiated(cli);
2125 }
2126
2127 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
2128 SAFE_FREE(cli->outbuf);
2129 SAFE_FREE(cli->inbuf);
2130 cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
2131 cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
2132 cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE + LARGE_WRITEX_HDR_SIZE;
2133 }
2134
2135 } else if (cli->protocol >= PROTOCOL_LANMAN1) {
2136 cli->use_spnego = False;
2137 cli->sec_mode = SVAL(vwv + 1, 0);
2138 cli->max_xmit = SVAL(vwv + 2, 0);
2139 cli->max_mux = SVAL(vwv + 3, 0);
2140 cli->sesskey = IVAL(vwv + 6, 0);
2141 cli->serverzone = SVALS(vwv + 10, 0);
2142 cli->serverzone *= 60;
2143 /* this time is converted to GMT by make_unix_date */
2144 cli->servertime = cli_make_unix_date(
2145 cli, (char *)(vwv + 8));
2146 cli->readbraw_supported = ((SVAL(vwv + 5, 0) & 0x1) != 0);
2147 cli->writebraw_supported = ((SVAL(vwv + 5, 0) & 0x2) != 0);
2148 cli->secblob = data_blob(bytes, num_bytes);
2149 } else {
2150 /* the old core protocol */
2151 cli->use_spnego = False;
2152 cli->sec_mode = 0;
2153 cli->serverzone = get_time_zone(time(NULL));
2154 }
2155
2156 cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
2157
2158 /* a way to force ascii SMB */
2159 if (getenv("CLI_FORCE_ASCII"))
2160 cli->capabilities &= ~CAP_UNICODE;
2161
2162 tevent_req_done(req);
2163 }
2164
2165 NTSTATUS cli_negprot_recv(struct tevent_req *req)
2166 {
2167 return tevent_req_simple_recv_ntstatus(req);
2168 }
2169
2170 NTSTATUS cli_negprot(struct cli_state *cli)
2171 {
2172 TALLOC_CTX *frame = talloc_stackframe();
2173 struct event_context *ev;
2174 struct tevent_req *req;
2175 NTSTATUS status = NT_STATUS_OK;
2176
2177 if (cli_has_async_calls(cli)) {
2178 /*
2179 * Can't use sync call while an async call is in flight
2180 */
2181 status = NT_STATUS_INVALID_PARAMETER;
2182 goto fail;
2183 }
2184
2185 ev = event_context_init(frame);
2186 if (ev == NULL) {
2187 status = NT_STATUS_NO_MEMORY;
2188 goto fail;
2189 }
2190
2191 req = cli_negprot_send(frame, ev, cli);
2192 if (req == NULL) {
2193 status = NT_STATUS_NO_MEMORY;
2194 goto fail;
2195 }
2196
2197 if (!tevent_req_poll(req, ev)) {
2198 status = map_nt_error_from_unix(errno);
2199 goto fail;
2200 }
2201
2202 status = cli_negprot_recv(req);
2203 fail:
2204 TALLOC_FREE(frame);
2205 if (!NT_STATUS_IS_OK(status)) {
2206 cli_set_error(cli, status);
2207 }
2208 return status;
2209 }
2210
2211 /****************************************************************************
2212 Send a session request. See rfc1002.txt 4.3 and 4.3.2.
2213 ****************************************************************************/
2214
2215 bool cli_session_request(struct cli_state *cli,
2216 struct nmb_name *calling, struct nmb_name *called)
2217 {
2218 char *p;
2219 int len = 4;
2220 char *tmp;
2221
2222 /* 445 doesn't have session request */
2223 if (cli->port == 445)
2224 return True;
2225
2226 memcpy(&(cli->calling), calling, sizeof(*calling));
2227 memcpy(&(cli->called ), called , sizeof(*called ));
2228
2229 /* put in the destination name */
2230
2231 tmp = name_mangle(talloc_tos(), cli->called.name,
2232 cli->called.name_type);
2233 if (tmp == NULL) {
2234 return false;
2235 }
2236
2237 p = cli->outbuf+len;
2238 memcpy(p, tmp, name_len(tmp));
2239 len += name_len(tmp);
2240 TALLOC_FREE(tmp);
2241
2242 /* and my name */
2243
2244 tmp = name_mangle(talloc_tos(), cli->calling.name,
2245 cli->calling.name_type);
2246 if (tmp == NULL) {
2247 return false;
2248 }
2249
2250 p = cli->outbuf+len;
2251 memcpy(p, tmp, name_len(tmp));
2252 len += name_len(tmp);
2253 TALLOC_FREE(tmp);
2254
2255 /* send a session request (RFC 1002) */
2256 /* setup the packet length
2257 * Remove four bytes from the length count, since the length
2258 * field in the NBT Session Service header counts the number
2259 * of bytes which follow. The cli_send_smb() function knows
2260 * about this and accounts for those four bytes.
2261 * CRH.
2262 */
2263 len -= 4;
2264 _smb_setlen(cli->outbuf,len);
2265 SCVAL(cli->outbuf,0,0x81);
2266
2267 cli_send_smb(cli);
2268 DEBUG(5,("Sent session request\n"));
2269
2270 if (!cli_receive_smb(cli))
2271 return False;
2272
2273 if (CVAL(cli->inbuf,0) == 0x84) {
2274 /* C. Hoch 9/14/95 Start */
2275 /* For information, here is the response structure.
2276 * We do the byte-twiddling to for portability.
2277 struct RetargetResponse{
2278 unsigned char type;
2279 unsigned char flags;
2280 int16 length;
2281 int32 ip_addr;
2282 int16 port;
2283 };
2284 */
2285 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
2286 struct in_addr dest_ip;
2287 NTSTATUS status;
2288
2289 /* SESSION RETARGET */
2290 putip((char *)&dest_ip,cli->inbuf+4);
2291 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
2292
2293 status = open_socket_out(&cli->dest_ss, port,
2294 LONG_CONNECT_TIMEOUT, &cli->fd);
2295 if (!NT_STATUS_IS_OK(status)) {
2296 return False;
2297 }
2298
2299 DEBUG(3,("Retargeted\n"));
2300
2301 set_socket_options(cli->fd, lp_socket_options());
2302
2303 /* Try again */
2304 {
2305 static int depth;
2306 bool ret;
2307 if (depth > 4) {
2308 DEBUG(0,("Retarget recursion - failing\n"));
2309 return False;
2310 }
2311 depth++;
2312 ret = cli_session_request(cli, calling, called);
2313 depth--;
2314 return ret;
2315 }
2316 } /* C. Hoch 9/14/95 End */
2317
2318 if (CVAL(cli->inbuf,0) != 0x82) {
2319 /* This is the wrong place to put the error... JRA. */
2320 cli->rap_error = CVAL(cli->inbuf,4);
2321 return False;
2322 }
2323 return(True);
2324 }
2325
2326 struct fd_struct {
2327 int fd;
2328 };
2329
2330 static void smb_sock_connected(struct tevent_req *req)
2331 {
2332 struct fd_struct *pfd = tevent_req_callback_data(
2333 req, struct fd_struct);
2334 int fd;
2335 NTSTATUS status;
2336
2337 status = open_socket_out_defer_recv(req, &fd);
2338 if (NT_STATUS_IS_OK(status)) {
2339 pfd->fd = fd;
2340 }
2341 }
2342
2343 static NTSTATUS open_smb_socket(const struct sockaddr_storage *pss,
2344 uint16_t *port, int timeout, int *pfd)
2345 {
2346 struct event_context *ev;
2347 struct tevent_req *r139, *r445;
2348 struct fd_struct *fd139, *fd445;
2349 NTSTATUS status = NT_STATUS_NO_MEMORY;
2350
2351 if (*port != 0) {
2352 return open_socket_out(pss, *port, timeout, pfd);
2353 }
2354
2355 ev = event_context_init(talloc_tos());
2356 if (ev == NULL) {
2357 return NT_STATUS_NO_MEMORY;
2358 }
2359
2360 fd139 = talloc(ev, struct fd_struct);
2361 if (fd139 == NULL) {
2362 goto done;
2363 }
2364 fd139->fd = -1;
2365
2366 fd445 = talloc(ev, struct fd_struct);
2367 if (fd445 == NULL) {
2368 goto done;
2369 }
2370 fd445->fd = -1;
2371
2372 r445 = open_socket_out_defer_send(ev, ev, timeval_set(0, 0),
2373 pss, 445, timeout);
2374 r139 = open_socket_out_defer_send(ev, ev, timeval_set(0, 3000),
2375 pss, 139, timeout);
2376 if ((r445 == NULL) || (r139 == NULL)) {
2377 goto done;
2378 }
2379 tevent_req_set_callback(r445, smb_sock_connected, fd445);
2380 tevent_req_set_callback(r139, smb_sock_connected, fd139);
2381
2382 while ((fd445->fd == -1) && (fd139->fd == -1)
2383 && (tevent_req_is_in_progress(r139)
2384 || tevent_req_is_in_progress(r445))) {
2385 event_loop_once(ev);
2386 }
2387
2388 if ((fd139->fd != -1) && (fd445->fd != -1)) {
2389 close(fd139->fd);
2390 fd139->fd = -1;
2391 }
2392
2393 if (fd445->fd != -1) {
2394 *port = 445;
2395 *pfd = fd445->fd;
2396 status = NT_STATUS_OK;
2397 goto done;
2398 }
2399 if (fd139->fd != -1) {
2400 *port = 139;
2401 *pfd = fd139->fd;
2402 status = NT_STATUS_OK;
2403 goto done;
2404 }
2405
2406 status = open_socket_out_defer_recv(r445, &fd445->fd);
2407 done:
2408 TALLOC_FREE(ev);
2409 return status;
2410 }
2411
2412 /****************************************************************************
2413 Open the client sockets.
2414 ****************************************************************************/
2415
2416 NTSTATUS cli_connect(struct cli_state *cli,
2417 const char *host,
2418 struct sockaddr_storage *dest_ss)
2419
2420 {
2421 int name_type = 0x20;
2422 TALLOC_CTX *frame = talloc_stackframe();
2423 unsigned int num_addrs = 0;
2424 unsigned int i = 0;
2425 struct sockaddr_storage *ss_arr = NULL;
2426 char *p = NULL;
2427
2428 /* reasonable default hostname */
2429 if (!host) {
2430 host = STAR_SMBSERVER;
2431 }
2432
2433 fstrcpy(cli->desthost, host);
2434
2435 /* allow hostnames of the form NAME#xx and do a netbios lookup */
2436 if ((p = strchr(cli->desthost, '#'))) {
2437 name_type = strtol(p+1, NULL, 16);
2438 *p = 0;
2439 }
2440
2441 if (!dest_ss || is_zero_addr((struct sockaddr *)dest_ss)) {
2442 NTSTATUS status =resolve_name_list(frame,
2443 cli->desthost,
2444 name_type,
2445 &ss_arr,
2446 &num_addrs);
2447 if (!NT_STATUS_IS_OK(status)) {
2448 TALLOC_FREE(frame);
2449 return NT_STATUS_BAD_NETWORK_NAME;
2450 }
2451 } else {
2452 num_addrs = 1;
2453 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
2454 if (!ss_arr) {
2455 TALLOC_FREE(frame);
2456 return NT_STATUS_NO_MEMORY;
2457 }
2458 *ss_arr = *dest_ss;
2459 }
2460
2461 for (i = 0; i < num_addrs; i++) {
2462 cli->dest_ss = ss_arr[i];
2463 if (getenv("LIBSMB_PROG")) {
2464 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
2465 } else {
2466 uint16_t port = cli->port;
2467 NTSTATUS status;
2468 status = open_smb_socket(&cli->dest_ss, &port,
2469 cli->timeout, &cli->fd);
2470 if (NT_STATUS_IS_OK(status)) {
2471 cli->port = port;
2472 }
2473 }
2474 if (cli->fd == -1) {
2475 char addr[INET6_ADDRSTRLEN];
2476 print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
2477 DEBUG(2,("Error connecting to %s (%s)\n",
2478 dest_ss?addr:host,strerror(errno)));
2479 } else {
2480 /* Exit from loop on first connection. */
2481 break;
2482 }
2483 }
2484
2485 if (cli->fd == -1) {
2486 TALLOC_FREE(frame);
2487 return map_nt_error_from_unix(errno);
2488 }
2489
2490 if (dest_ss) {
2491 *dest_ss = cli->dest_ss;
2492 }
2493
2494 set_socket_options(cli->fd, lp_socket_options());
2495
2496 TALLOC_FREE(frame);
2497 return NT_STATUS_OK;
2498 }
2499
2500 /**
2501 establishes a connection to after the negprot.
2502 @param output_cli A fully initialised cli structure, non-null only on success
2503 @param dest_host The netbios name of the remote host
2504 @param dest_ss (optional) The the destination IP, NULL for name based lookup
2505 @param port (optional) The destination port (0 for default)
2506 @param retry bool. Did this connection fail with a retryable error ?
2507
2508 */
2509 NTSTATUS cli_start_connection(struct cli_state **output_cli,
2510 const char *my_name,
2511 const char *dest_host,
2512 struct sockaddr_storage *dest_ss, int port,
2513 int signing_state, int flags,
2514 bool *retry)
2515 {
2516 NTSTATUS nt_status;
2517 struct nmb_name calling;
2518 struct nmb_name called;
2519 struct cli_state *cli;
2520 struct sockaddr_storage ss;
2521
2522 if (retry)
2523 *retry = False;
2524
2525 if (!my_name)
2526 my_name = global_myname();
2527
2528 if (!(cli = cli_initialise_ex(signing_state))) {
2529 return NT_STATUS_NO_MEMORY;
2530 }
2531
2532 make_nmb_name(&calling, my_name, 0x0);
2533 make_nmb_name(&called , dest_host, 0x20);
2534
2535 cli_set_port(cli, port);
2536 cli_set_timeout(cli, 10000); /* 10 seconds. */
2537
2538 if (dest_ss) {
2539 ss = *dest_ss;
2540 } else {
2541 zero_sockaddr(&ss);
2542 }
2543
2544 again:
2545
2546 DEBUG(3,("Connecting to host=%s\n", dest_host));
2547
2548 nt_status = cli_connect(cli, dest_host, &ss);
2549 if (!NT_STATUS_IS_OK(nt_status)) {
2550 char addr[INET6_ADDRSTRLEN];
2551 print_sockaddr(addr, sizeof(addr), &ss);
2552 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
2553 nmb_namestr(&called), addr, nt_errstr(nt_status) ));
2554 cli_shutdown(cli);
2555 return nt_status;
2556 }
2557
2558 if (retry)
2559 *retry = True;
2560
2561 if (!cli_session_request(cli, &calling, &called)) {
2562 char *p;
2563 DEBUG(1,("session request to %s failed (%s)\n",
2564 called.name, cli_errstr(cli)));
2565 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
2566 *p = 0;
2567 goto again;
2568 }
2569 if (strcmp(called.name, STAR_SMBSERVER)) {
2570 make_nmb_name(&called , STAR_SMBSERVER, 0x20);
2571 goto again;
2572 }
2573 return NT_STATUS_BAD_NETWORK_NAME;
2574 }
2575
2576 if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
2577 cli->use_spnego = False;
2578 else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
2579 cli->use_kerberos = True;
2580
2581 if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
2582 cli->use_kerberos) {
2583 cli->fallback_after_kerberos = true;
2584 }
2585 if (flags & CLI_FULL_CONNECTION_USE_CCACHE) {
2586 cli->use_ccache = true;
2587 }
2588
2589 nt_status = cli_negprot(cli);
2590 if (!NT_STATUS_IS_OK(nt_status)) {
2591 DEBUG(1, ("failed negprot: %s\n", nt_errstr(nt_status)));
2592 cli_shutdown(cli);
2593 return nt_status;
2594 }
2595
2596 *output_cli = cli;
2597 return NT_STATUS_OK;
2598 }
2599
2600
2601 /**
2602 establishes a connection right up to doing tconX, password specified.
2603 @param output_cli A fully initialised cli structure, non-null only on success
2604 @param dest_host The netbios name of the remote host
2605 @param dest_ip (optional) The the destination IP, NULL for name based lookup
2606 @param port (optional) The destination port (0 for default)
2607 @param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
2608 @param service_type The 'type' of serivice.
2609 @param user Username, unix string
2610 @param domain User's domain
2611 @param password User's password, unencrypted unix string.
2612 @param retry bool. Did this connection fail with a retryable error ?
2613 */
2614
2615 NTSTATUS cli_full_connection(struct cli_state **output_cli,
2616 const char *my_name,
2617 const char *dest_host,
2618 struct sockaddr_storage *dest_ss, int port,
2619 const char *service, const char *service_type,
2620 const char *user, const char *domain,
2621 const char *password, int flags,
2622 int signing_state,
2623 bool *retry)
2624 {
2625 NTSTATUS nt_status;
2626 struct cli_state *cli = NULL;
2627 int pw_len = password ? strlen(password)+1 : 0;
2628
2629 *output_cli = NULL;
2630
2631 if (password == NULL) {
2632 password = "";
2633 }
2634
2635 nt_status = cli_start_connection(&cli, my_name, dest_host,
2636 dest_ss, port, signing_state,
2637 flags, retry);
2638
2639 if (!NT_STATUS_IS_OK(nt_status)) {
2640 return nt_status;
2641 }
2642
2643 cli->use_oplocks = ((flags & CLI_FULL_CONNECTION_OPLOCKS) != 0);
2644 cli->use_level_II_oplocks =
2645 ((flags & CLI_FULL_CONNECTION_LEVEL_II_OPLOCKS) != 0);
2646
2647 nt_status = cli_session_setup(cli, user, password, pw_len, password,
2648 pw_len, domain);
2649 if (!NT_STATUS_IS_OK(nt_status)) {
2650
2651 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
2652 DEBUG(1,("failed session setup with %s\n",
2653 nt_errstr(nt_status)));
2654 cli_shutdown(cli);
2655 return nt_status;
2656 }
2657
2658 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
2659 if (!NT_STATUS_IS_OK(nt_status)) {
2660 DEBUG(1,("anonymous failed session setup with %s\n",
2661 nt_errstr(nt_status)));
2662 cli_shutdown(cli);
2663 return nt_status;
2664 }
2665 }
2666
2667 if (service) {
2668 nt_status = cli_tcon_andx(cli, service, service_type, password,
2669 pw_len);
2670 if (!NT_STATUS_IS_OK(nt_status)) {
2671 DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
2672 cli_shutdown(cli);
2673 if (NT_STATUS_IS_OK(nt_status)) {
2674 nt_status = NT_STATUS_UNSUCCESSFUL;
2675 }
2676 return nt_status;
2677 }
2678 }
2679
2680 nt_status = cli_init_creds(cli, user, domain, password);
2681 if (!NT_STATUS_IS_OK(nt_status)) {
2682 cli_shutdown(cli);
2683 return nt_status;
2684 }
2685
2686 *output_cli = cli;
2687 return NT_STATUS_OK;
2688 }
2689
2690 /****************************************************************************
2691 Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
2692 ****************************************************************************/
2693
2694 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
2695 struct sockaddr_storage *pdest_ss)
2696 {
2697 struct nmb_name calling, called;
2698
2699 make_nmb_name(&calling, srchost, 0x0);
2700
2701 /*
2702 * If the called name is an IP address
2703 * then use *SMBSERVER immediately.
2704 */
2705
2706 if(is_ipaddress(desthost)) {
2707 make_nmb_name(&called, STAR_SMBSERVER, 0x20);
2708 } else {
2709 make_nmb_name(&called, desthost, 0x20);
2710 }
2711
2712 if (!cli_session_request(*ppcli, &calling, &called)) {
2713 NTSTATUS status;
2714 struct nmb_name smbservername;
2715
2716 make_nmb_name(&smbservername, STAR_SMBSERVER, 0x20);
2717
2718 /*
2719 * If the name wasn't *SMBSERVER then
2720 * try with *SMBSERVER if the first name fails.
2721 */
2722
2723 if (nmb_name_equal(&called, &smbservername)) {
2724
2725 /*
2726 * The name used was *SMBSERVER, don't bother with another name.
2727 */
2728
2729 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
2730 with error %s.\n", desthost, cli_errstr(*ppcli) ));
2731 return False;
2732 }
2733
2734 /* Try again... */
2735 cli_shutdown(*ppcli);
2736
2737 *ppcli = cli_initialise();
2738 if (!*ppcli) {
2739 /* Out of memory... */
2740 return False;
2741 }
2742
2743 status = cli_connect(*ppcli, desthost, pdest_ss);
2744 if (!NT_STATUS_IS_OK(status) ||
2745 !cli_session_request(*ppcli, &calling, &smbservername)) {
2746 DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
2747 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
2748 return False;
2749 }
2750 }
2751
2752 return True;
2753 }
2754
2755 /****************************************************************************
2756 Send an old style tcon.
2757 ****************************************************************************/
2758 NTSTATUS cli_raw_tcon(struct cli_state *cli,
2759 const char *service, const char *pass, const char *dev,
2760 uint16 *max_xmit, uint16 *tid)
2761 {
2762 char *p;
2763
2764 if (!lp_client_plaintext_auth() && (*pass)) {
2765 DEBUG(1, ("Server requested plaintext password but 'client "
2766 "plaintext auth' is disabled\n"));
2767 return NT_STATUS_ACCESS_DENIED;
2768 }
2769
2770 memset(cli->outbuf,'\0',smb_size);
2771 memset(cli->inbuf,'\0',smb_size);
2772
2773 cli_set_message(cli->outbuf, 0, 0, True);
2774 SCVAL(cli->outbuf,smb_com,SMBtcon);
2775 cli_setup_packet(cli);
2776
2777 p = smb_buf(cli->outbuf);
2778 *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
2779 *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
2780 *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
2781
2782 cli_setup_bcc(cli, p);
2783
2784 cli_send_smb(cli);
2785 if (!cli_receive_smb(cli)) {
2786 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
2787 }
2788
2789 if (cli_is_error(cli)) {
2790 return cli_nt_error(cli);
2791 }
2792
2793 *max_xmit = SVAL(cli->inbuf, smb_vwv0);
2794 *tid = SVAL(cli->inbuf, smb_vwv1);
2795
2796 return NT_STATUS_OK;
2797 }
2798
2799 /* Return a cli_state pointing at the IPC$ share for the given server */
2800
2801 struct cli_state *get_ipc_connect(char *server,
2802 struct sockaddr_storage *server_ss,
2803 const struct user_auth_info *user_info)
2804 {
2805 struct cli_state *cli;
2806 NTSTATUS nt_status;
2807 uint32_t flags = CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK;
2808
2809 if (user_info->use_kerberos) {
2810 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
2811 }
2812
2813 nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
2814 user_info->username ? user_info->username : "",
2815 lp_workgroup(),
2816 user_info->password ? user_info->password : "",
2817 flags,
2818 Undefined, NULL);
2819
2820 if (NT_STATUS_IS_OK(nt_status)) {
2821 return cli;
2822 } else if (is_ipaddress(server)) {
2823 /* windows 9* needs a correct NMB name for connections */
2824 fstring remote_name;
2825
2826 if (name_status_find("*", 0, 0, server_ss, remote_name)) {
2827 cli = get_ipc_connect(remote_name, server_ss, user_info);
2828 if (cli)
2829 return cli;
2830 }
2831 }
2832 return NULL;
2833 }
2834
2835 /*
2836 * Given the IP address of a master browser on the network, return its
2837 * workgroup and connect to it.
2838 *
2839 * This function is provided to allow additional processing beyond what
2840 * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
2841 * browsers and obtain each master browsers' list of domains (in case the
2842 * first master browser is recently on the network and has not yet
2843 * synchronized with other master browsers and therefore does not yet have the
2844 * entire network browse list)
2845 */
2846
2847 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
2848 struct ip_service *mb_ip,
2849 const struct user_auth_info *user_info,
2850 char **pp_workgroup_out)
2851 {
2852 char addr[INET6_ADDRSTRLEN];
2853 fstring name;
2854 struct cli_state *cli;
2855 struct sockaddr_storage server_ss;
2856
2857 *pp_workgroup_out = NULL;
2858
2859 print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
2860 DEBUG(99, ("Looking up name of master browser %s\n",
2861 addr));
2862
2863 /*
2864 * Do a name status query to find out the name of the master browser.
2865 * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
2866 * master browser will not respond to a wildcard query (or, at least,
2867 * an NT4 server acting as the domain master browser will not).
2868 *
2869 * We might be able to use ONLY the query on MSBROWSE, but that's not
2870 * yet been tested with all Windows versions, so until it is, leave
2871 * the original wildcard query as the first choice and fall back to
2872 * MSBROWSE if the wildcard query fails.
2873 */
2874 if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
2875 !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
2876
2877 DEBUG(99, ("Could not retrieve name status for %s\n",
2878 addr));
2879 return NULL;
2880 }
2881
2882 if (!find_master_ip(name, &server_ss)) {
2883 DEBUG(99, ("Could not find master ip for %s\n", name));
2884 return NULL;
2885 }
2886
2887 *pp_workgroup_out = talloc_strdup(ctx, name);
2888
2889 DEBUG(4, ("found master browser %s, %s\n", name, addr));
2890
2891 print_sockaddr(addr, sizeof(addr), &server_ss);
2892 cli = get_ipc_connect(addr, &server_ss, user_info);
2893
2894 return cli;
2895 }
2896
2897 /*
2898 * Return the IP address and workgroup of a master browser on the network, and
2899 * connect to it.
2900 */
2901
2902 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
2903 const struct user_auth_info *user_info,
2904 char **pp_workgroup_out)
2905 {
2906 struct ip_service *ip_list;
2907 struct cli_state *cli;
2908 int i, count;
2909
2910 *pp_workgroup_out = NULL;
2911
2912 DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
2913
2914 /* Go looking for workgroups by broadcasting on the local network */
2915
2916 if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
2917 &count))) {
2918 DEBUG(99, ("No master browsers responded\n"));
2919 return False;
2920 }
2921
2922 for (i = 0; i < count; i++) {
2923 char addr[INET6_ADDRSTRLEN];
2924 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
2925 DEBUG(99, ("Found master browser %s\n", addr));
2926
2927 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
2928 user_info, pp_workgroup_out);
2929 if (cli)
2930 return(cli);
2931 }
2932
2933 return NULL;
2934 }
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