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source: branches/samba-3.2.x/source/libsmb/cliconnect.c@ 411

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Last change on this file since 411 was 235, checked in by Herwig Bauernfeind, 16 years ago
Update 3.2 branch to 3.2.11
File size: 60.1 KB

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1	/*
2	Unix SMB/CIFS implementation.
3	client connect/disconnect routines
4	Copyright (C) Andrew Tridgell 1994-1998
5	Copyright (C) Andrew Bartlett 2001-2003
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 3 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program. If not, see <http://www.gnu.org/licenses/>.
19	*/
20
21	#include "includes.h"
22
23	static const struct {
24	int prot;
25	const char *name;
26	} prots[] = {
27	{PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
28	{PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
29	{PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
30	{PROTOCOL_LANMAN1,"LANMAN1.0"},
31	{PROTOCOL_LANMAN2,"LM1.2X002"},
32	{PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
33	{PROTOCOL_LANMAN2,"LANMAN2.1"},
34	{PROTOCOL_LANMAN2,"Samba"},
35	{PROTOCOL_NT1,"NT LANMAN 1.0"},
36	{PROTOCOL_NT1,"NT LM 0.12"},
37	{-1,NULL}
38	};
39
40	static const char star_smbserver_name = "SMBSERVER";
41
42	/**
43	* Set the user session key for a connection
44	* @param cli The cli structure to add it too
45	* @param session_key The session key used. (A copy of this is taken for the cli struct)
46	*
47	*/
48
49	static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
50	{
51	cli->user_session_key = data_blob(session_key.data, session_key.length);
52	}
53
54	/****************************************************************************
55	Do an old lanman2 style session setup.
56	****************************************************************************/
57
58	static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
59	const char *user,
60	const char *pass, size_t passlen,
61	const char *workgroup)
62	{
63	DATA_BLOB session_key = data_blob_null;
64	DATA_BLOB lm_response = data_blob_null;
65	fstring pword;
66	char *p;
67
68	if (passlen > sizeof(pword)-1) {
69	return NT_STATUS_INVALID_PARAMETER;
70	}
71
72	/* LANMAN servers predate NT status codes and Unicode and ignore those
73	smb flags so we must disable the corresponding default capabilities
74	that would otherwise cause the Unicode and NT Status flags to be
75	set (and even returned by the server) */
76
77	cli->capabilities &= ~(CAP_UNICODE \| CAP_STATUS32);
78
79	/* if in share level security then don't send a password now */
80	if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
81	passlen = 0;
82
83	if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
84	/* Encrypted mode needed, and non encrypted password supplied. */
85	lm_response = data_blob(NULL, 24);
86	if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
87	DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
88	return NT_STATUS_ACCESS_DENIED;
89	}
90	} else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
91	/* Encrypted mode needed, and encrypted password supplied. */
92	lm_response = data_blob(pass, passlen);
93	} else if (passlen > 0) {
94	/* Plaintext mode needed, assume plaintext supplied. */
95	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
96	lm_response = data_blob(pass, passlen);
97	}
98
99	/* send a session setup command */
100	memset(cli->outbuf,'\0',smb_size);
101	cli_set_message(cli->outbuf,10, 0, True);
102	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
103	cli_setup_packet(cli);
104
105	SCVAL(cli->outbuf,smb_vwv0,0xFF);
106	SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
107	SSVAL(cli->outbuf,smb_vwv3,2);
108	SSVAL(cli->outbuf,smb_vwv4,1);
109	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
110	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
111
112	p = smb_buf(cli->outbuf);
113	memcpy(p,lm_response.data,lm_response.length);
114	p += lm_response.length;
115	p += clistr_push(cli, p, user, -1, STR_TERMINATE\|STR_UPPER);
116	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
117	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
118	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
119	cli_setup_bcc(cli, p);
120
121	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
122	return cli_nt_error(cli);
123	}
124
125	show_msg(cli->inbuf);
126
127	if (cli_is_error(cli)) {
128	return cli_nt_error(cli);
129	}
130
131	/* use the returned vuid from now on */
132	cli->vuid = SVAL(cli->inbuf,smb_uid);
133	fstrcpy(cli->user_name, user);
134
135	if (session_key.data) {
136	/* Have plaintext orginal */
137	cli_set_session_key(cli, session_key);
138	}
139
140	return NT_STATUS_OK;
141	}
142
143	/****************************************************************************
144	Work out suitable capabilities to offer the server.
145	****************************************************************************/
146
147	static uint32 cli_session_setup_capabilities(struct cli_state *cli)
148	{
149	uint32 capabilities = CAP_NT_SMBS;
150
151	if (!cli->force_dos_errors)
152	capabilities \|= CAP_STATUS32;
153
154	if (cli->use_level_II_oplocks)
155	capabilities \|= CAP_LEVEL_II_OPLOCKS;
156
157	capabilities \|= (cli->capabilities & (CAP_UNICODE\|CAP_LARGE_FILES\|CAP_LARGE_READX\|CAP_LARGE_WRITEX\|CAP_DFS));
158	return capabilities;
159	}
160
161	/****************************************************************************
162	Do a NT1 guest session setup.
163	****************************************************************************/
164
165	static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
166	{
167	char *p;
168	uint32 capabilities = cli_session_setup_capabilities(cli);
169
170	memset(cli->outbuf, '\0', smb_size);
171	cli_set_message(cli->outbuf,13,0,True);
172	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
173	cli_setup_packet(cli);
174
175	SCVAL(cli->outbuf,smb_vwv0,0xFF);
176	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
177	SSVAL(cli->outbuf,smb_vwv3,2);
178	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
179	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
180	SSVAL(cli->outbuf,smb_vwv7,0);
181	SSVAL(cli->outbuf,smb_vwv8,0);
182	SIVAL(cli->outbuf,smb_vwv11,capabilities);
183	p = smb_buf(cli->outbuf);
184	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
185	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
186	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
187	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
188	cli_setup_bcc(cli, p);
189
190	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
191	return cli_nt_error(cli);
192	}
193
194	show_msg(cli->inbuf);
195
196	if (cli_is_error(cli)) {
197	return cli_nt_error(cli);
198	}
199
200	cli->vuid = SVAL(cli->inbuf,smb_uid);
201
202	p = smb_buf(cli->inbuf);
203	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
204	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
205	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
206
207	if (strstr(cli->server_type, "Samba")) {
208	cli->is_samba = True;
209	}
210
211	fstrcpy(cli->user_name, "");
212
213	return NT_STATUS_OK;
214	}
215
216	/****************************************************************************
217	Do a NT1 plaintext session setup.
218	****************************************************************************/
219
220	static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
221	const char user, const char pass,
222	const char *workgroup)
223	{
224	uint32 capabilities = cli_session_setup_capabilities(cli);
225	char *p;
226	fstring lanman;
227
228	fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
229
230	memset(cli->outbuf, '\0', smb_size);
231	cli_set_message(cli->outbuf,13,0,True);
232	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
233	cli_setup_packet(cli);
234
235	SCVAL(cli->outbuf,smb_vwv0,0xFF);
236	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
237	SSVAL(cli->outbuf,smb_vwv3,2);
238	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
239	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
240	SSVAL(cli->outbuf,smb_vwv8,0);
241	SIVAL(cli->outbuf,smb_vwv11,capabilities);
242	p = smb_buf(cli->outbuf);
243
244	/* check wether to send the ASCII or UNICODE version of the password */
245
246	if ( (capabilities & CAP_UNICODE) == 0 ) {
247	p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
248	SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
249	}
250	else {
251	/* For ucs2 passwords clistr_push calls ucs2_align, which causes
252	* the space taken by the unicode password to be one byte too
253	* long (as we're on an odd byte boundary here). Reduce the
254	* count by 1 to cope with this. Fixes smbclient against NetApp
255	* servers which can't cope. Fix from
256	* bryan.kolodziej@allenlund.com in bug #3840.
257	*/
258	p += clistr_push(cli, p, pass, -1, STR_UNICODE\|STR_TERMINATE); /* unicode password */
259	SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf))-1);
260	}
261
262	p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
263	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
264	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
265	p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
266	cli_setup_bcc(cli, p);
267
268	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
269	return cli_nt_error(cli);
270	}
271
272	show_msg(cli->inbuf);
273
274	if (cli_is_error(cli)) {
275	return cli_nt_error(cli);
276	}
277
278	cli->vuid = SVAL(cli->inbuf,smb_uid);
279	p = smb_buf(cli->inbuf);
280	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
281	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
282	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
283	fstrcpy(cli->user_name, user);
284
285	if (strstr(cli->server_type, "Samba")) {
286	cli->is_samba = True;
287	}
288
289	return NT_STATUS_OK;
290	}
291
292	/****************************************************************************
293	do a NT1 NTLM/LM encrypted session setup - for when extended security
294	is not negotiated.
295	@param cli client state to create do session setup on
296	@param user username
297	@param pass either cleartext password (passlen !=24) or LM response.
298	@param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
299	@param workgroup The user's domain.
300	****************************************************************************/
301
302	static NTSTATUS cli_session_setup_nt1(struct cli_state cli, const char user,
303	const char *pass, size_t passlen,
304	const char *ntpass, size_t ntpasslen,
305	const char *workgroup)
306	{
307	uint32 capabilities = cli_session_setup_capabilities(cli);
308	DATA_BLOB lm_response = data_blob_null;
309	DATA_BLOB nt_response = data_blob_null;
310	DATA_BLOB session_key = data_blob_null;
311	NTSTATUS result;
312	char *p;
313
314	if (passlen == 0) {
315	/* do nothing - guest login */
316	} else if (passlen != 24) {
317	if (lp_client_ntlmv2_auth()) {
318	DATA_BLOB server_chal;
319	DATA_BLOB names_blob;
320	server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
321
322	/* note that the 'workgroup' here is a best guess - we don't know
323	the server's domain at this point. The 'server name' is also
324	dodgy...
325	*/
326	names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
327
328	if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
329	&names_blob,
330	&lm_response, &nt_response, &session_key)) {
331	data_blob_free(&names_blob);
332	data_blob_free(&server_chal);
333	return NT_STATUS_ACCESS_DENIED;
334	}
335	data_blob_free(&names_blob);
336	data_blob_free(&server_chal);
337
338	} else {
339	uchar nt_hash[16];
340	E_md4hash(pass, nt_hash);
341
342	#ifdef LANMAN_ONLY
343	nt_response = data_blob_null;
344	#else
345	nt_response = data_blob(NULL, 24);
346	SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
347	#endif
348	/* non encrypted password supplied. Ignore ntpass. */
349	if (lp_client_lanman_auth()) {
350	lm_response = data_blob(NULL, 24);
351	if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
352	/* Oops, the LM response is invalid, just put
353	the NT response there instead */
354	data_blob_free(&lm_response);
355	lm_response = data_blob(nt_response.data, nt_response.length);
356	}
357	} else {
358	/* LM disabled, place NT# in LM field instead */
359	lm_response = data_blob(nt_response.data, nt_response.length);
360	}
361
362	session_key = data_blob(NULL, 16);
363	#ifdef LANMAN_ONLY
364	E_deshash(pass, session_key.data);
365	memset(&session_key.data[8], '\0', 8);
366	#else
367	SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
368	#endif
369	}
370	#ifdef LANMAN_ONLY
371	cli_simple_set_signing(cli, session_key, lm_response);
372	#else
373	cli_simple_set_signing(cli, session_key, nt_response);
374	#endif
375	} else {
376	/* pre-encrypted password supplied. Only used for
377	security=server, can't do
378	signing because we don't have original key */
379
380	lm_response = data_blob(pass, passlen);
381	nt_response = data_blob(ntpass, ntpasslen);
382	}
383
384	/* send a session setup command */
385	memset(cli->outbuf,'\0',smb_size);
386
387	cli_set_message(cli->outbuf,13,0,True);
388	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
389	cli_setup_packet(cli);
390
391	SCVAL(cli->outbuf,smb_vwv0,0xFF);
392	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
393	SSVAL(cli->outbuf,smb_vwv3,2);
394	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
395	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
396	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
397	SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
398	SIVAL(cli->outbuf,smb_vwv11,capabilities);
399	p = smb_buf(cli->outbuf);
400	if (lm_response.length) {
401	memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
402	}
403	if (nt_response.length) {
404	memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
405	}
406	p += clistr_push(cli, p, user, -1, STR_TERMINATE);
407
408	/* Upper case here might help some NTLMv2 implementations */
409	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
410	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
411	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
412	cli_setup_bcc(cli, p);
413
414	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
415	result = cli_nt_error(cli);
416	goto end;
417	}
418
419	/* show_msg(cli->inbuf); */
420
421	if (cli_is_error(cli)) {
422	result = cli_nt_error(cli);
423	goto end;
424	}
425
426	/* use the returned vuid from now on */
427	cli->vuid = SVAL(cli->inbuf,smb_uid);
428
429	p = smb_buf(cli->inbuf);
430	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
431	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
432	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
433
434	if (strstr(cli->server_type, "Samba")) {
435	cli->is_samba = True;
436	}
437
438	fstrcpy(cli->user_name, user);
439
440	if (session_key.data) {
441	/* Have plaintext orginal */
442	cli_set_session_key(cli, session_key);
443	}
444
445	result = NT_STATUS_OK;
446	end:
447	data_blob_free(&lm_response);
448	data_blob_free(&nt_response);
449	data_blob_free(&session_key);
450	return result;
451	}
452
453	/****************************************************************************
454	Send a extended security session setup blob
455	****************************************************************************/
456
457	static bool cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
458	{
459	uint32 capabilities = cli_session_setup_capabilities(cli);
460	char *p;
461
462	capabilities \|= CAP_EXTENDED_SECURITY;
463
464	/* send a session setup command */
465	memset(cli->outbuf,'\0',smb_size);
466
467	cli_set_message(cli->outbuf,12,0,True);
468	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
469
470	cli_setup_packet(cli);
471
472	SCVAL(cli->outbuf,smb_vwv0,0xFF);
473	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
474	SSVAL(cli->outbuf,smb_vwv3,2);
475	SSVAL(cli->outbuf,smb_vwv4,1);
476	SIVAL(cli->outbuf,smb_vwv5,0);
477	SSVAL(cli->outbuf,smb_vwv7,blob.length);
478	SIVAL(cli->outbuf,smb_vwv10,capabilities);
479	p = smb_buf(cli->outbuf);
480	memcpy(p, blob.data, blob.length);
481	p += blob.length;
482	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
483	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
484	cli_setup_bcc(cli, p);
485	return cli_send_smb(cli);
486	}
487
488	/****************************************************************************
489	Send a extended security session setup blob, returning a reply blob.
490	****************************************************************************/
491
492	static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
493	{
494	DATA_BLOB blob2 = data_blob_null;
495	char *p;
496	size_t len;
497
498	if (!cli_receive_smb(cli))
499	return blob2;
500
501	show_msg(cli->inbuf);
502
503	if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
504	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
505	return blob2;
506	}
507
508	/* use the returned vuid from now on */
509	cli->vuid = SVAL(cli->inbuf,smb_uid);
510
511	p = smb_buf(cli->inbuf);
512
513	blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
514
515	p += blob2.length;
516	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
517
518	/* w2k with kerberos doesn't properly null terminate this field */
519	len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
520	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
521
522	return blob2;
523	}
524
525	#ifdef HAVE_KRB5
526	/****************************************************************************
527	Send a extended security session setup blob, returning a reply blob.
528	****************************************************************************/
529
530	/* The following is calculated from :
531	* (smb_size-4) = 35
532	* (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
533	* (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
534	* end of packet.
535	*/
536
537	#define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
538
539	static bool cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
540	{
541	int32 remaining = blob.length;
542	int32 cur = 0;
543	DATA_BLOB send_blob = data_blob_null;
544	int32 max_blob_size = 0;
545	DATA_BLOB receive_blob = data_blob_null;
546
547	if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
548	DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
549	"(was %u, need minimum %u)\n",
550	(unsigned int)cli->max_xmit,
551	BASE_SESSSETUP_BLOB_PACKET_SIZE));
552	cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
553	return False;
554	}
555
556	max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
557
558	while ( remaining > 0) {
559	if (remaining >= max_blob_size) {
560	send_blob.length = max_blob_size;
561	remaining -= max_blob_size;
562	} else {
563	send_blob.length = remaining;
564	remaining = 0;
565	}
566
567	send_blob.data = &blob.data[cur];
568	cur += send_blob.length;
569
570	DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
571	(unsigned int)remaining,
572	(unsigned int)send_blob.length,
573	(unsigned int)cur ));
574
575	if (!cli_session_setup_blob_send(cli, send_blob)) {
576	DEBUG(0, ("cli_session_setup_blob: send failed\n"));
577	return False;
578	}
579
580	receive_blob = cli_session_setup_blob_receive(cli);
581	data_blob_free(&receive_blob);
582
583	if (cli_is_error(cli) &&
584	!NT_STATUS_EQUAL( cli_get_nt_error(cli),
585	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
586	DEBUG(0, ("cli_session_setup_blob: receive failed "
587	"(%s)\n", nt_errstr(cli_get_nt_error(cli))));
588	cli->vuid = 0;
589	return False;
590	}
591	}
592
593	return True;
594	}
595
596	/****************************************************************************
597	Use in-memory credentials cache
598	****************************************************************************/
599
600	static void use_in_memory_ccache(void) {
601	setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
602	}
603
604	/****************************************************************************
605	Do a spnego/kerberos encrypted session setup.
606	****************************************************************************/
607
608	static ADS_STATUS cli_session_setup_kerberos(struct cli_state cli, const char principal, const char *workgroup)
609	{
610	DATA_BLOB negTokenTarg;
611	DATA_BLOB session_key_krb5;
612	NTSTATUS nt_status;
613	int rc;
614
615	cli_temp_set_signing(cli);
616
617	DEBUG(2,("Doing kerberos session setup\n"));
618
619	/* generate the encapsulated kerberos5 ticket */
620	rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
621
622	if (rc) {
623	DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
624	error_message(rc)));
625	return ADS_ERROR_KRB5(rc);
626	}
627
628	#if 0
629	file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
630	#endif
631
632	if (!cli_session_setup_blob(cli, negTokenTarg)) {
633	nt_status = cli_nt_error(cli);
634	goto nt_error;
635	}
636
637	if (cli_is_error(cli)) {
638	nt_status = cli_nt_error(cli);
639	if (NT_STATUS_IS_OK(nt_status)) {
640	nt_status = NT_STATUS_UNSUCCESSFUL;
641	}
642	goto nt_error;
643	}
644
645	cli_set_session_key(cli, session_key_krb5);
646
647	if (cli_simple_set_signing(
648	cli, session_key_krb5, data_blob_null)) {
649
650	/* 'resign' the last message, so we get the right sequence numbers
651	for checking the first reply from the server */
652	cli_calculate_sign_mac(cli, cli->outbuf);
653
654	if (!cli_check_sign_mac(cli, cli->inbuf)) {
655	nt_status = NT_STATUS_ACCESS_DENIED;
656	goto nt_error;
657	}
658	}
659
660	data_blob_free(&negTokenTarg);
661	data_blob_free(&session_key_krb5);
662
663	return ADS_ERROR_NT(NT_STATUS_OK);
664
665	nt_error:
666	data_blob_free(&negTokenTarg);
667	data_blob_free(&session_key_krb5);
668	cli->vuid = 0;
669	return ADS_ERROR_NT(nt_status);
670	}
671	#endif /* HAVE_KRB5 */
672
673
674	/****************************************************************************
675	Do a spnego/NTLMSSP encrypted session setup.
676	****************************************************************************/
677
678	static NTSTATUS cli_session_setup_ntlmssp(struct cli_state cli, const char user,
679	const char pass, const char domain)
680	{
681	struct ntlmssp_state *ntlmssp_state;
682	NTSTATUS nt_status;
683	int turn = 1;
684	DATA_BLOB msg1;
685	DATA_BLOB blob = data_blob_null;
686	DATA_BLOB blob_in = data_blob_null;
687	DATA_BLOB blob_out = data_blob_null;
688
689	cli_temp_set_signing(cli);
690
691	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
692	return nt_status;
693	}
694	ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
695
696	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
697	return nt_status;
698	}
699	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
700	return nt_status;
701	}
702	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
703	return nt_status;
704	}
705
706	do {
707	nt_status = ntlmssp_update(ntlmssp_state,
708	blob_in, &blob_out);
709	data_blob_free(&blob_in);
710	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) \|\| NT_STATUS_IS_OK(nt_status)) {
711	if (turn == 1) {
712	/* and wrap it in a SPNEGO wrapper */
713	msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
714	} else {
715	/* wrap it in SPNEGO */
716	msg1 = spnego_gen_auth(blob_out);
717	}
718
719	/* now send that blob on its way */
720	if (!cli_session_setup_blob_send(cli, msg1)) {
721	DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
722	nt_status = NT_STATUS_UNSUCCESSFUL;
723	} else {
724	blob = cli_session_setup_blob_receive(cli);
725
726	nt_status = cli_nt_error(cli);
727	if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
728	if (cli->smb_rw_error == SMB_READ_BAD_SIG) {
729	nt_status = NT_STATUS_ACCESS_DENIED;
730	} else {
731	nt_status = NT_STATUS_UNSUCCESSFUL;
732	}
733	}
734	}
735	data_blob_free(&msg1);
736	}
737
738	if (!blob.length) {
739	if (NT_STATUS_IS_OK(nt_status)) {
740	nt_status = NT_STATUS_UNSUCCESSFUL;
741	}
742	} else if ((turn == 1) &&
743	NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
744	DATA_BLOB tmp_blob = data_blob_null;
745	/* the server might give us back two challenges */
746	if (!spnego_parse_challenge(blob, &blob_in,
747	&tmp_blob)) {
748	DEBUG(3,("Failed to parse challenges\n"));
749	nt_status = NT_STATUS_INVALID_PARAMETER;
750	}
751	data_blob_free(&tmp_blob);
752	} else {
753	if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
754	&blob_in)) {
755	DEBUG(3,("Failed to parse auth response\n"));
756	if (NT_STATUS_IS_OK(nt_status)
757	\|\| NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
758	nt_status = NT_STATUS_INVALID_PARAMETER;
759	}
760	}
761	data_blob_free(&blob);
762	data_blob_free(&blob_out);
763	turn++;
764	} while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
765
766	data_blob_free(&blob_in);
767
768	if (NT_STATUS_IS_OK(nt_status)) {
769
770	DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
771	ntlmssp_state->session_key.length);
772	DATA_BLOB null_blob = data_blob_null;
773	bool res;
774
775	fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
776	cli_set_session_key(cli, ntlmssp_state->session_key);
777
778	res = cli_simple_set_signing(cli, key, null_blob);
779
780	data_blob_free(&key);
781
782	if (res) {
783
784	/* 'resign' the last message, so we get the right sequence numbers
785	for checking the first reply from the server */
786	cli_calculate_sign_mac(cli, cli->outbuf);
787
788	if (!cli_check_sign_mac(cli, cli->inbuf)) {
789	nt_status = NT_STATUS_ACCESS_DENIED;
790	}
791	}
792	}
793
794	/* we have a reference conter on ntlmssp_state, if we are signing
795	then the state will be kept by the signing engine */
796
797	ntlmssp_end(&ntlmssp_state);
798
799	if (!NT_STATUS_IS_OK(nt_status)) {
800	cli->vuid = 0;
801	}
802	return nt_status;
803	}
804
805	/****************************************************************************
806	Do a spnego encrypted session setup.
807
808	user_domain: The shortname of the domain the user/machine is a member of.
809	dest_realm: The realm we're connecting to, if NULL we use our default realm.
810	****************************************************************************/
811
812	ADS_STATUS cli_session_setup_spnego(struct cli_state cli, const char user,
813	const char pass, const char user_domain,
814	const char * dest_realm)
815	{
816	char *principal = NULL;
817	char *OIDs[ASN1_MAX_OIDS];
818	int i;
819	DATA_BLOB blob;
820	const char *p = NULL;
821	char *account = NULL;
822
823	DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
824
825	/* the server might not even do spnego */
826	if (cli->secblob.length <= 16) {
827	DEBUG(3,("server didn't supply a full spnego negprot\n"));
828	goto ntlmssp;
829	}
830
831	#if 0
832	file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
833	#endif
834
835	/* there is 16 bytes of GUID before the real spnego packet starts */
836	blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
837
838	/* The server sent us the first part of the SPNEGO exchange in the
839	* negprot reply. It is WRONG to depend on the principal sent in the
840	* negprot reply, but right now we do it. If we don't receive one,
841	* we try to best guess, then fall back to NTLM. */
842	if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
843	data_blob_free(&blob);
844	return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
845	}
846	data_blob_free(&blob);
847
848	/* make sure the server understands kerberos */
849	for (i=0;OIDs[i];i++) {
850	DEBUG(3,("got OID=%s\n", OIDs[i]));
851	if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 \|\|
852	strcmp(OIDs[i], OID_KERBEROS5) == 0) {
853	cli->got_kerberos_mechanism = True;
854	}
855	free(OIDs[i]);
856	}
857
858	DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
859
860	fstrcpy(cli->user_name, user);
861
862	#ifdef HAVE_KRB5
863	/* If password is set we reauthenticate to kerberos server
864	* and do not store results */
865
866	if (cli->got_kerberos_mechanism && cli->use_kerberos) {
867	ADS_STATUS rc;
868
869	if (pass && *pass) {
870	int ret;
871
872	use_in_memory_ccache();
873	ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
874
875	if (ret){
876	SAFE_FREE(principal);
877	DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
878	if (cli->fallback_after_kerberos)
879	goto ntlmssp;
880	return ADS_ERROR_KRB5(ret);
881	}
882	}
883
884	/* If we get a bad principal, try to guess it if
885	we have a valid host NetBIOS name.
886	*/
887	if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
888	SAFE_FREE(principal);
889	}
890
891	if (principal == NULL &&
892	!is_ipaddress(cli->desthost) &&
893	!strequal(star_smbserver_name,
894	cli->desthost)) {
895	char *realm = NULL;
896	char *machine = NULL;
897	char *host = NULL;
898	DEBUG(3,("cli_session_setup_spnego: got a "
899	"bad server principal, trying to guess ...\n"));
900
901	host = strchr_m(cli->desthost, '.');
902	if (host) {
903	machine = SMB_STRNDUP(cli->desthost,
904	host - cli->desthost);
905	} else {
906	machine = SMB_STRDUP(cli->desthost);
907	}
908	if (machine == NULL) {
909	return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
910	}
911
912	if (dest_realm) {
913	realm = SMB_STRDUP(dest_realm);
914	strupper_m(realm);
915	} else {
916	realm = kerberos_get_default_realm_from_ccache();
917	}
918	if (realm && *realm) {
919	if (asprintf(&principal, "%s$@%s",
920	machine, realm) < 0) {
921	SAFE_FREE(machine);
922	SAFE_FREE(realm);
923	return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
924	}
925	DEBUG(3,("cli_session_setup_spnego: guessed "
926	"server principal=%s\n",
927	principal ? principal : "<null>"));
928	}
929	SAFE_FREE(machine);
930	SAFE_FREE(realm);
931	}
932
933	if (principal) {
934	rc = cli_session_setup_kerberos(cli, principal,
935	dest_realm);
936	if (ADS_ERR_OK(rc) \|\| !cli->fallback_after_kerberos) {
937	SAFE_FREE(principal);
938	return rc;
939	}
940	}
941	}
942	#endif
943
944	SAFE_FREE(principal);
945
946	ntlmssp:
947
948	account = talloc_strdup(talloc_tos(), user);
949	if (!account) {
950	return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
951	}
952
953	/* when falling back to ntlmssp while authenticating with a machine
954	* account strip off the realm - gd */
955
956	if ((p = strchr_m(user, '@')) != NULL) {
957	account[PTR_DIFF(p,user)] = '\0';
958	}
959
960	return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, account, pass, user_domain));
961	}
962
963	/****************************************************************************
964	Send a session setup. The username and workgroup is in UNIX character
965	format and must be converted to DOS codepage format before sending. If the
966	password is in plaintext, the same should be done.
967	****************************************************************************/
968
969	NTSTATUS cli_session_setup(struct cli_state *cli,
970	const char *user,
971	const char *pass, int passlen,
972	const char *ntpass, int ntpasslen,
973	const char *workgroup)
974	{
975	char *p;
976	fstring user2;
977
978	if (user) {
979	fstrcpy(user2, user);
980	} else {
981	user2[0] ='\0';
982	}
983
984	if (!workgroup) {
985	workgroup = "";
986	}
987
988	/* allow for workgroups as part of the username */
989	if ((p=strchr_m(user2,'\\')) \|\| (p=strchr_m(user2,'/')) \|\|
990	(p=strchr_m(user2,*lp_winbind_separator()))) {
991	*p = 0;
992	user = p+1;
993	workgroup = user2;
994	}
995
996	if (cli->protocol < PROTOCOL_LANMAN1) {
997	return NT_STATUS_OK;
998	}
999
1000	/* now work out what sort of session setup we are going to
1001	do. I have split this into separate functions to make the
1002	flow a bit easier to understand (tridge) */
1003
1004	/* if its an older server then we have to use the older request format */
1005
1006	if (cli->protocol < PROTOCOL_NT1) {
1007	if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
1008	DEBUG(1, ("Server requested LM password but 'client lanman auth'"
1009	" is disabled\n"));
1010	return NT_STATUS_ACCESS_DENIED;
1011	}
1012
1013	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
1014	!lp_client_plaintext_auth() && (*pass)) {
1015	DEBUG(1, ("Server requested plaintext password but "
1016	"'client plaintext auth' is disabled\n"));
1017	return NT_STATUS_ACCESS_DENIED;
1018	}
1019
1020	return cli_session_setup_lanman2(cli, user, pass, passlen,
1021	workgroup);
1022	}
1023
1024	/* if no user is supplied then we have to do an anonymous connection.
1025	passwords are ignored */
1026
1027	if (!user \|\| !*user)
1028	return cli_session_setup_guest(cli);
1029
1030	/* if the server is share level then send a plaintext null
1031	password at this point. The password is sent in the tree
1032	connect */
1033
1034	if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1035	return cli_session_setup_plaintext(cli, user, "", workgroup);
1036
1037	/* if the server doesn't support encryption then we have to use
1038	plaintext. The second password is ignored */
1039
1040	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1041	if (!lp_client_plaintext_auth() && (*pass)) {
1042	DEBUG(1, ("Server requested plaintext password but "
1043	"'client plaintext auth' is disabled\n"));
1044	return NT_STATUS_ACCESS_DENIED;
1045	}
1046	return cli_session_setup_plaintext(cli, user, pass, workgroup);
1047	}
1048
1049	/* if the server supports extended security then use SPNEGO */
1050
1051	if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1052	ADS_STATUS status = cli_session_setup_spnego(cli, user, pass,
1053	workgroup, NULL);
1054	if (!ADS_ERR_OK(status)) {
1055	DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1056	return ads_ntstatus(status);
1057	}
1058	} else {
1059	NTSTATUS status;
1060
1061	/* otherwise do a NT1 style session setup */
1062	status = cli_session_setup_nt1(cli, user, pass, passlen,
1063	ntpass, ntpasslen, workgroup);
1064	if (!NT_STATUS_IS_OK(status)) {
1065	DEBUG(3,("cli_session_setup: NT1 session setup "
1066	"failed: %s\n", nt_errstr(status)));
1067	return status;
1068	}
1069	}
1070
1071	if (strstr(cli->server_type, "Samba")) {
1072	cli->is_samba = True;
1073	}
1074
1075	return NT_STATUS_OK;
1076	}
1077
1078	/****************************************************************************
1079	Send a uloggoff.
1080	*****************************************************************************/
1081
1082	bool cli_ulogoff(struct cli_state *cli)
1083	{
1084	memset(cli->outbuf,'\0',smb_size);
1085	cli_set_message(cli->outbuf,2,0,True);
1086	SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1087	cli_setup_packet(cli);
1088	SSVAL(cli->outbuf,smb_vwv0,0xFF);
1089	SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
1090
1091	cli_send_smb(cli);
1092	if (!cli_receive_smb(cli))
1093	return False;
1094
1095	if (cli_is_error(cli)) {
1096	return False;
1097	}
1098
1099	cli->vuid = -1;
1100	return True;
1101	}
1102
1103	/****************************************************************************
1104	Send a tconX.
1105	****************************************************************************/
1106
1107	bool cli_send_tconX(struct cli_state *cli,
1108	const char share, const char dev, const char *pass, int passlen)
1109	{
1110	fstring fullshare, pword;
1111	char *p;
1112	memset(cli->outbuf,'\0',smb_size);
1113	memset(cli->inbuf,'\0',smb_size);
1114
1115	fstrcpy(cli->share, share);
1116
1117	/* in user level security don't send a password now */
1118	if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1119	passlen = 1;
1120	pass = "";
1121	} else if (!pass) {
1122	DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1123	return False;
1124	}
1125
1126	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1127	*pass && passlen != 24) {
1128	if (!lp_client_lanman_auth()) {
1129	DEBUG(1, ("Server requested LANMAN password "
1130	"(share-level security) but "
1131	"'client lanman auth' is disabled\n"));
1132	return False;
1133	}
1134
1135	/*
1136	* Non-encrypted passwords - convert to DOS codepage before encryption.
1137	*/
1138	passlen = 24;
1139	SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1140	} else {
1141	if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL\|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1142	if (!lp_client_plaintext_auth() && (*pass)) {
1143	DEBUG(1, ("Server requested plaintext "
1144	"password but 'client plaintext "
1145	"auth' is disabled\n"));
1146	return False;
1147	}
1148
1149	/*
1150	* Non-encrypted passwords - convert to DOS codepage before using.
1151	*/
1152	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1153
1154	} else {
1155	if (passlen) {
1156	memcpy(pword, pass, passlen);
1157	}
1158	}
1159	}
1160
1161	slprintf(fullshare, sizeof(fullshare)-1,
1162	"\\\\%s\\%s", cli->desthost, share);
1163
1164	cli_set_message(cli->outbuf,4, 0, True);
1165	SCVAL(cli->outbuf,smb_com,SMBtconX);
1166	cli_setup_packet(cli);
1167
1168	SSVAL(cli->outbuf,smb_vwv0,0xFF);
1169	SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1170	SSVAL(cli->outbuf,smb_vwv3,passlen);
1171
1172	p = smb_buf(cli->outbuf);
1173	if (passlen) {
1174	memcpy(p,pword,passlen);
1175	}
1176	p += passlen;
1177	p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE \|STR_UPPER);
1178	p += clistr_push(cli, p, dev, -1, STR_TERMINATE \|STR_UPPER \| STR_ASCII);
1179
1180	cli_setup_bcc(cli, p);
1181
1182	cli_send_smb(cli);
1183	if (!cli_receive_smb(cli))
1184	return False;
1185
1186	if (cli_is_error(cli))
1187	return False;
1188
1189	clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE\|STR_ASCII);
1190
1191	if (cli->protocol >= PROTOCOL_NT1 &&
1192	smb_buflen(cli->inbuf) == 3) {
1193	/* almost certainly win95 - enable bug fixes */
1194	cli->win95 = True;
1195	}
1196
1197	/* Make sure that we have the optional support 16-bit field. WCT > 2 */
1198	/* Avoids issues when connecting to Win9x boxes sharing files */
1199
1200	cli->dfsroot = False;
1201	if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1202	cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1203
1204	cli->cnum = SVAL(cli->inbuf,smb_tid);
1205	return True;
1206	}
1207
1208	/****************************************************************************
1209	Send a tree disconnect.
1210	****************************************************************************/
1211
1212	bool cli_tdis(struct cli_state *cli)
1213	{
1214	memset(cli->outbuf,'\0',smb_size);
1215	cli_set_message(cli->outbuf,0,0,True);
1216	SCVAL(cli->outbuf,smb_com,SMBtdis);
1217	SSVAL(cli->outbuf,smb_tid,cli->cnum);
1218	cli_setup_packet(cli);
1219
1220	cli_send_smb(cli);
1221	if (!cli_receive_smb(cli))
1222	return False;
1223
1224	if (cli_is_error(cli)) {
1225	return False;
1226	}
1227
1228	cli->cnum = -1;
1229	return True;
1230	}
1231
1232	/****************************************************************************
1233	Send a negprot command.
1234	****************************************************************************/
1235
1236	void cli_negprot_send(struct cli_state *cli)
1237	{
1238	char *p;
1239	int numprots;
1240
1241	if (cli->protocol < PROTOCOL_NT1)
1242	cli->use_spnego = False;
1243
1244	memset(cli->outbuf,'\0',smb_size);
1245
1246	/* setup the protocol strings */
1247	cli_set_message(cli->outbuf,0,0,True);
1248
1249	p = smb_buf(cli->outbuf);
1250	for (numprots=0;
1251	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1252	numprots++) {
1253	*p++ = 2;
1254	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1255	}
1256
1257	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1258	cli_setup_bcc(cli, p);
1259	cli_setup_packet(cli);
1260
1261	SCVAL(smb_buf(cli->outbuf),0,2);
1262
1263	cli_send_smb(cli);
1264	}
1265
1266	/****************************************************************************
1267	Send a negprot command.
1268	****************************************************************************/
1269
1270	bool cli_negprot(struct cli_state *cli)
1271	{
1272	char *p;
1273	int numprots;
1274	int plength;
1275
1276	if (cli->protocol < PROTOCOL_NT1)
1277	cli->use_spnego = False;
1278
1279	memset(cli->outbuf,'\0',smb_size);
1280
1281	/* setup the protocol strings */
1282	for (plength=0,numprots=0;
1283	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1284	numprots++)
1285	plength += strlen(prots[numprots].name)+2;
1286
1287	cli_set_message(cli->outbuf,0,plength,True);
1288
1289	p = smb_buf(cli->outbuf);
1290	for (numprots=0;
1291	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1292	numprots++) {
1293	*p++ = 2;
1294	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1295	}
1296
1297	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1298	cli_setup_packet(cli);
1299
1300	SCVAL(smb_buf(cli->outbuf),0,2);
1301
1302	cli_send_smb(cli);
1303	if (!cli_receive_smb(cli))
1304	return False;
1305
1306	show_msg(cli->inbuf);
1307
1308	if (cli_is_error(cli) \|\|
1309	((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1310	return(False);
1311	}
1312
1313	cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1314
1315	if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1316	DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1317	return False;
1318	}
1319
1320	if (cli->protocol >= PROTOCOL_NT1) {
1321	struct timespec ts;
1322	/* NT protocol */
1323	cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1324	cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1325	cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1326	cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1327	cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1328	cli->serverzone *= 60;
1329	/* this time arrives in real GMT */
1330	ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1331	cli->servertime = ts.tv_sec;
1332	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1333	cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1334	if (cli->capabilities & CAP_RAW_MODE) {
1335	cli->readbraw_supported = True;
1336	cli->writebraw_supported = True;
1337	}
1338	/* work out if they sent us a workgroup */
1339	if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1340	smb_buflen(cli->inbuf) > 8) {
1341	clistr_pull(cli, cli->server_domain,
1342	smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1343	smb_buflen(cli->inbuf)-8, STR_UNICODE\|STR_NOALIGN);
1344	}
1345
1346	/*
1347	* As signing is slow we only turn it on if either the client or
1348	* the server require it. JRA.
1349	*/
1350
1351	if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1352	/* Fail if server says signing is mandatory and we don't want to support it. */
1353	if (!cli->sign_info.allow_smb_signing) {
1354	DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1355	return False;
1356	}
1357	cli->sign_info.negotiated_smb_signing = True;
1358	cli->sign_info.mandatory_signing = True;
1359	} else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1360	/* Fail if client says signing is mandatory and the server doesn't support it. */
1361	if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1362	DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1363	return False;
1364	}
1365	cli->sign_info.negotiated_smb_signing = True;
1366	cli->sign_info.mandatory_signing = True;
1367	} else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1368	cli->sign_info.negotiated_smb_signing = True;
1369	}
1370
1371	if (cli->capabilities & (CAP_LARGE_READX\|CAP_LARGE_WRITEX)) {
1372	SAFE_FREE(cli->outbuf);
1373	SAFE_FREE(cli->inbuf);
1374	cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1375	cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1376	cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE + LARGE_WRITEX_HDR_SIZE;
1377	}
1378
1379	} else if (cli->protocol >= PROTOCOL_LANMAN1) {
1380	cli->use_spnego = False;
1381	cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1382	cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1383	cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1384	cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1385	cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1386	cli->serverzone *= 60;
1387	/* this time is converted to GMT by make_unix_date */
1388	cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1389	cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1390	cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1391	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1392	} else {
1393	/* the old core protocol */
1394	cli->use_spnego = False;
1395	cli->sec_mode = 0;
1396	cli->serverzone = get_time_zone(time(NULL));
1397	}
1398
1399	cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1400
1401	/* a way to force ascii SMB */
1402	if (getenv("CLI_FORCE_ASCII"))
1403	cli->capabilities &= ~CAP_UNICODE;
1404
1405	return True;
1406	}
1407
1408	/****************************************************************************
1409	Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1410	****************************************************************************/
1411
1412	bool cli_session_request(struct cli_state *cli,
1413	struct nmb_name calling, struct nmb_name called)
1414	{
1415	char *p;
1416	int len = 4;
1417
1418	memcpy(&(cli->calling), calling, sizeof(*calling));
1419	memcpy(&(cli->called ), called , sizeof(*called ));
1420
1421	/* put in the destination name */
1422	p = cli->outbuf+len;
1423	name_mangle(cli->called .name, p, cli->called .name_type);
1424	len += name_len(p);
1425
1426	/* and my name */
1427	p = cli->outbuf+len;
1428	name_mangle(cli->calling.name, p, cli->calling.name_type);
1429	len += name_len(p);
1430
1431	/* 445 doesn't have session request */
1432	if (cli->port == 445)
1433	return True;
1434
1435	/* send a session request (RFC 1002) */
1436	/* setup the packet length
1437	* Remove four bytes from the length count, since the length
1438	* field in the NBT Session Service header counts the number
1439	* of bytes which follow. The cli_send_smb() function knows
1440	* about this and accounts for those four bytes.
1441	* CRH.
1442	*/
1443	len -= 4;
1444	_smb_setlen(cli->outbuf,len);
1445	SCVAL(cli->outbuf,0,0x81);
1446
1447	cli_send_smb(cli);
1448	DEBUG(5,("Sent session request\n"));
1449
1450	if (!cli_receive_smb(cli))
1451	return False;
1452
1453	if (CVAL(cli->inbuf,0) == 0x84) {
1454	/* C. Hoch 9/14/95 Start */
1455	/* For information, here is the response structure.
1456	* We do the byte-twiddling to for portability.
1457	struct RetargetResponse{
1458	unsigned char type;
1459	unsigned char flags;
1460	int16 length;
1461	int32 ip_addr;
1462	int16 port;
1463	};
1464	*/
1465	uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1466	struct in_addr dest_ip;
1467
1468	/* SESSION RETARGET */
1469	putip((char *)&dest_ip,cli->inbuf+4);
1470	in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
1471
1472	cli->fd = open_socket_out(SOCK_STREAM,
1473	&cli->dest_ss,
1474	port,
1475	LONG_CONNECT_TIMEOUT);
1476	if (cli->fd == -1)
1477	return False;
1478
1479	DEBUG(3,("Retargeted\n"));
1480
1481	set_socket_options(cli->fd, lp_socket_options());
1482
1483	/* Try again */
1484	{
1485	static int depth;
1486	bool ret;
1487	if (depth > 4) {
1488	DEBUG(0,("Retarget recursion - failing\n"));
1489	return False;
1490	}
1491	depth++;
1492	ret = cli_session_request(cli, calling, called);
1493	depth--;
1494	return ret;
1495	}
1496	} /* C. Hoch 9/14/95 End */
1497
1498	if (CVAL(cli->inbuf,0) != 0x82) {
1499	/* This is the wrong place to put the error... JRA. */
1500	cli->rap_error = CVAL(cli->inbuf,4);
1501	return False;
1502	}
1503	return(True);
1504	}
1505
1506	/****************************************************************************
1507	Open the client sockets.
1508	****************************************************************************/
1509
1510	NTSTATUS cli_connect(struct cli_state *cli,
1511	const char *host,
1512	struct sockaddr_storage *dest_ss)
1513
1514	{
1515	int name_type = 0x20;
1516	TALLOC_CTX *frame = talloc_stackframe();
1517	unsigned int num_addrs = 0;
1518	unsigned int i = 0;
1519	struct sockaddr_storage *ss_arr = NULL;
1520	char *p = NULL;
1521
1522	/* reasonable default hostname */
1523	if (!host) {
1524	host = star_smbserver_name;
1525	}
1526
1527	fstrcpy(cli->desthost, host);
1528	fstr_sprintf(cli->srv_name_slash, "\\\\%s", cli->desthost);
1529	strupper_m(cli->srv_name_slash);
1530
1531	/* allow hostnames of the form NAME#xx and do a netbios lookup */
1532	if ((p = strchr(cli->desthost, '#'))) {
1533	name_type = strtol(p+1, NULL, 16);
1534	*p = 0;
1535	}
1536
1537	if (!dest_ss \|\| is_zero_addr(dest_ss)) {
1538	NTSTATUS status =resolve_name_list(frame,
1539	cli->desthost,
1540	name_type,
1541	&ss_arr,
1542	&num_addrs);
1543	if (!NT_STATUS_IS_OK(status)) {
1544	TALLOC_FREE(frame);
1545	return NT_STATUS_BAD_NETWORK_NAME;
1546	}
1547	} else {
1548	num_addrs = 1;
1549	ss_arr = TALLOC_P(frame, struct sockaddr_storage);
1550	if (!ss_arr) {
1551	TALLOC_FREE(frame);
1552	return NT_STATUS_NO_MEMORY;
1553	}
1554	ss_arr = dest_ss;
1555	}
1556
1557	for (i = 0; i < num_addrs; i++) {
1558	cli->dest_ss = ss_arr[i];
1559	if (getenv("LIBSMB_PROG")) {
1560	cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1561	} else {
1562	/* try 445 first, then 139 */
1563	uint16_t port = cli->port?cli->port:445;
1564	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1565	port, cli->timeout);
1566	if (cli->fd == -1 && cli->port == 0) {
1567	port = 139;
1568	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ss,
1569	port, cli->timeout);
1570	}
1571	if (cli->fd != -1) {
1572	cli->port = port;
1573	}
1574	}
1575	if (cli->fd == -1) {
1576	char addr[INET6_ADDRSTRLEN];
1577	print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
1578	DEBUG(2,("Error connecting to %s (%s)\n",
1579	dest_ss?addr:host,strerror(errno)));
1580	} else {
1581	/* Exit from loop on first connection. */
1582	break;
1583	}
1584	}
1585
1586	if (cli->fd == -1) {
1587	TALLOC_FREE(frame);
1588	return map_nt_error_from_unix(errno);
1589	}
1590
1591	if (dest_ss) {
1592	*dest_ss = cli->dest_ss;
1593	}
1594
1595	set_socket_options(cli->fd, lp_socket_options());
1596
1597	TALLOC_FREE(frame);
1598	return NT_STATUS_OK;
1599	}
1600
1601	/**
1602	establishes a connection to after the negprot.
1603	@param output_cli A fully initialised cli structure, non-null only on success
1604	@param dest_host The netbios name of the remote host
1605	@param dest_ss (optional) The the destination IP, NULL for name based lookup
1606	@param port (optional) The destination port (0 for default)
1607	@param retry bool. Did this connection fail with a retryable error ?
1608
1609	*/
1610	NTSTATUS cli_start_connection(struct cli_state **output_cli,
1611	const char *my_name,
1612	const char *dest_host,
1613	struct sockaddr_storage *dest_ss, int port,
1614	int signing_state, int flags,
1615	bool *retry)
1616	{
1617	NTSTATUS nt_status;
1618	struct nmb_name calling;
1619	struct nmb_name called;
1620	struct cli_state *cli;
1621	struct sockaddr_storage ss;
1622
1623	if (retry)
1624	*retry = False;
1625
1626	if (!my_name)
1627	my_name = global_myname();
1628
1629	if (!(cli = cli_initialise())) {
1630	return NT_STATUS_NO_MEMORY;
1631	}
1632
1633	make_nmb_name(&calling, my_name, 0x0);
1634	make_nmb_name(&called , dest_host, 0x20);
1635
1636	if (cli_set_port(cli, port) != port) {
1637	cli_shutdown(cli);
1638	return NT_STATUS_UNSUCCESSFUL;
1639	}
1640
1641	cli_set_timeout(cli, 10000); /* 10 seconds. */
1642
1643	if (dest_ss) {
1644	ss = *dest_ss;
1645	} else {
1646	zero_sockaddr(&ss);
1647	}
1648
1649	again:
1650
1651	DEBUG(3,("Connecting to host=%s\n", dest_host));
1652
1653	nt_status = cli_connect(cli, dest_host, &ss);
1654	if (!NT_STATUS_IS_OK(nt_status)) {
1655	char addr[INET6_ADDRSTRLEN];
1656	print_sockaddr(addr, sizeof(addr), &ss);
1657	DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1658	nmb_namestr(&called), addr, nt_errstr(nt_status) ));
1659	cli_shutdown(cli);
1660	return nt_status;
1661	}
1662
1663	if (retry)
1664	*retry = True;
1665
1666	if (!cli_session_request(cli, &calling, &called)) {
1667	char *p;
1668	DEBUG(1,("session request to %s failed (%s)\n",
1669	called.name, cli_errstr(cli)));
1670	if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1671	*p = 0;
1672	goto again;
1673	}
1674	if (strcmp(called.name, star_smbserver_name)) {
1675	make_nmb_name(&called , star_smbserver_name, 0x20);
1676	goto again;
1677	}
1678	return NT_STATUS_BAD_NETWORK_NAME;
1679	}
1680
1681	cli_setup_signing_state(cli, signing_state);
1682
1683	if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1684	cli->use_spnego = False;
1685	else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1686	cli->use_kerberos = True;
1687
1688	if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
1689	cli->use_kerberos) {
1690	cli->fallback_after_kerberos = true;
1691	}
1692
1693	if (!cli_negprot(cli)) {
1694	DEBUG(1,("failed negprot\n"));
1695	nt_status = cli_nt_error(cli);
1696	if (NT_STATUS_IS_OK(nt_status)) {
1697	nt_status = NT_STATUS_UNSUCCESSFUL;
1698	}
1699	cli_shutdown(cli);
1700	return nt_status;
1701	}
1702
1703	*output_cli = cli;
1704	return NT_STATUS_OK;
1705	}
1706
1707
1708	/**
1709	establishes a connection right up to doing tconX, password specified.
1710	@param output_cli A fully initialised cli structure, non-null only on success
1711	@param dest_host The netbios name of the remote host
1712	@param dest_ip (optional) The the destination IP, NULL for name based lookup
1713	@param port (optional) The destination port (0 for default)
1714	@param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1715	@param service_type The 'type' of serivice.
1716	@param user Username, unix string
1717	@param domain User's domain
1718	@param password User's password, unencrypted unix string.
1719	@param retry bool. Did this connection fail with a retryable error ?
1720	*/
1721
1722	NTSTATUS cli_full_connection(struct cli_state **output_cli,
1723	const char *my_name,
1724	const char *dest_host,
1725	struct sockaddr_storage *dest_ss, int port,
1726	const char service, const char service_type,
1727	const char user, const char domain,
1728	const char *password, int flags,
1729	int signing_state,
1730	bool *retry)
1731	{
1732	NTSTATUS nt_status;
1733	struct cli_state *cli = NULL;
1734	int pw_len = password ? strlen(password)+1 : 0;
1735
1736	*output_cli = NULL;
1737
1738	if (password == NULL) {
1739	password = "";
1740	}
1741
1742	nt_status = cli_start_connection(&cli, my_name, dest_host,
1743	dest_ss, port, signing_state,
1744	flags, retry);
1745
1746	if (!NT_STATUS_IS_OK(nt_status)) {
1747	return nt_status;
1748	}
1749
1750	nt_status = cli_session_setup(cli, user, password, pw_len, password,
1751	pw_len, domain);
1752	if (!NT_STATUS_IS_OK(nt_status)) {
1753
1754	if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1755	DEBUG(1,("failed session setup with %s\n",
1756	nt_errstr(nt_status)));
1757	cli_shutdown(cli);
1758	return nt_status;
1759	}
1760
1761	nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1762	if (!NT_STATUS_IS_OK(nt_status)) {
1763	DEBUG(1,("anonymous failed session setup with %s\n",
1764	nt_errstr(nt_status)));
1765	cli_shutdown(cli);
1766	return nt_status;
1767	}
1768	}
1769
1770	if (service) {
1771	if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1772	nt_status = cli_nt_error(cli);
1773	DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1774	cli_shutdown(cli);
1775	if (NT_STATUS_IS_OK(nt_status)) {
1776	nt_status = NT_STATUS_UNSUCCESSFUL;
1777	}
1778	return nt_status;
1779	}
1780	}
1781
1782	cli_init_creds(cli, user, domain, password);
1783
1784	*output_cli = cli;
1785	return NT_STATUS_OK;
1786	}
1787
1788	/****************************************************************************
1789	Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1790	****************************************************************************/
1791
1792	bool attempt_netbios_session_request(struct cli_state *ppcli, const char srchost, const char *desthost,
1793	struct sockaddr_storage *pdest_ss)
1794	{
1795	struct nmb_name calling, called;
1796
1797	make_nmb_name(&calling, srchost, 0x0);
1798
1799	/*
1800	* If the called name is an IP address
1801	* then use *SMBSERVER immediately.
1802	*/
1803
1804	if(is_ipaddress(desthost)) {
1805	make_nmb_name(&called, star_smbserver_name, 0x20);
1806	} else {
1807	make_nmb_name(&called, desthost, 0x20);
1808	}
1809
1810	if (!cli_session_request(*ppcli, &calling, &called)) {
1811	NTSTATUS status;
1812	struct nmb_name smbservername;
1813
1814	make_nmb_name(&smbservername, star_smbserver_name, 0x20);
1815
1816	/*
1817	* If the name wasn't *SMBSERVER then
1818	* try with *SMBSERVER if the first name fails.
1819	*/
1820
1821	if (nmb_name_equal(&called, &smbservername)) {
1822
1823	/*
1824	* The name used was *SMBSERVER, don't bother with another name.
1825	*/
1826
1827	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1828	with error %s.\n", desthost, cli_errstr(*ppcli) ));
1829	return False;
1830	}
1831
1832	/* Try again... */
1833	cli_shutdown(*ppcli);
1834
1835	*ppcli = cli_initialise();
1836	if (!*ppcli) {
1837	/* Out of memory... */
1838	return False;
1839	}
1840
1841	status = cli_connect(*ppcli, desthost, pdest_ss);
1842	if (!NT_STATUS_IS_OK(status) \|\|
1843	!cli_session_request(*ppcli, &calling, &smbservername)) {
1844	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1845	name SMBSERVER with error %s\n", desthost, cli_errstr(ppcli) ));
1846	return False;
1847	}
1848	}
1849
1850	return True;
1851	}
1852
1853	/****************************************************************************
1854	Send an old style tcon.
1855	****************************************************************************/
1856	NTSTATUS cli_raw_tcon(struct cli_state *cli,
1857	const char service, const char pass, const char *dev,
1858	uint16 max_xmit, uint16 tid)
1859	{
1860	char *p;
1861
1862	if (!lp_client_plaintext_auth() && (*pass)) {
1863	DEBUG(1, ("Server requested plaintext password but 'client "
1864	"plaintext auth' is disabled\n"));
1865	return NT_STATUS_ACCESS_DENIED;
1866	}
1867
1868	memset(cli->outbuf,'\0',smb_size);
1869	memset(cli->inbuf,'\0',smb_size);
1870
1871	cli_set_message(cli->outbuf, 0, 0, True);
1872	SCVAL(cli->outbuf,smb_com,SMBtcon);
1873	cli_setup_packet(cli);
1874
1875	p = smb_buf(cli->outbuf);
1876	*p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE \| STR_NOALIGN);
1877	*p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE \| STR_NOALIGN);
1878	*p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE \| STR_NOALIGN);
1879
1880	cli_setup_bcc(cli, p);
1881
1882	cli_send_smb(cli);
1883	if (!cli_receive_smb(cli)) {
1884	return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1885	}
1886
1887	if (cli_is_error(cli)) {
1888	return cli_nt_error(cli);
1889	}
1890
1891	*max_xmit = SVAL(cli->inbuf, smb_vwv0);
1892	*tid = SVAL(cli->inbuf, smb_vwv1);
1893
1894	return NT_STATUS_OK;
1895	}
1896
1897	/* Return a cli_state pointing at the IPC$ share for the given server */
1898
1899	struct cli_state get_ipc_connect(char server,
1900	struct sockaddr_storage *server_ss,
1901	const struct user_auth_info *user_info)
1902	{
1903	struct cli_state *cli;
1904	NTSTATUS nt_status;
1905	uint32_t flags = CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK;
1906
1907	if (user_info->use_kerberos) {
1908	flags \|= CLI_FULL_CONNECTION_USE_KERBEROS;
1909	}
1910
1911	nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
1912	user_info->username ? user_info->username : "",
1913	lp_workgroup(),
1914	user_info->password ? user_info->password : "",
1915	flags,
1916	Undefined, NULL);
1917
1918	if (NT_STATUS_IS_OK(nt_status)) {
1919	return cli;
1920	} else if (is_ipaddress(server)) {
1921	/* windows 9* needs a correct NMB name for connections */
1922	fstring remote_name;
1923
1924	if (name_status_find("*", 0, 0, server_ss, remote_name)) {
1925	cli = get_ipc_connect(remote_name, server_ss, user_info);
1926	if (cli)
1927	return cli;
1928	}
1929	}
1930	return NULL;
1931	}
1932
1933	/*
1934	* Given the IP address of a master browser on the network, return its
1935	* workgroup and connect to it.
1936	*
1937	* This function is provided to allow additional processing beyond what
1938	* get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1939	* browsers and obtain each master browsers' list of domains (in case the
1940	* first master browser is recently on the network and has not yet
1941	* synchronized with other master browsers and therefore does not yet have the
1942	* entire network browse list)
1943	*/
1944
1945	struct cli_state get_ipc_connect_master_ip(TALLOC_CTX ctx,
1946	struct ip_service *mb_ip,
1947	const struct user_auth_info *user_info,
1948	char **pp_workgroup_out)
1949	{
1950	char addr[INET6_ADDRSTRLEN];
1951	fstring name;
1952	struct cli_state *cli;
1953	struct sockaddr_storage server_ss;
1954
1955	*pp_workgroup_out = NULL;
1956
1957	print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
1958	DEBUG(99, ("Looking up name of master browser %s\n",
1959	addr));
1960
1961	/*
1962	* Do a name status query to find out the name of the master browser.
1963	* We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1964	* master browser will not respond to a wildcard query (or, at least,
1965	* an NT4 server acting as the domain master browser will not).
1966	*
1967	* We might be able to use ONLY the query on MSBROWSE, but that's not
1968	* yet been tested with all Windows versions, so until it is, leave
1969	* the original wildcard query as the first choice and fall back to
1970	* MSBROWSE if the wildcard query fails.
1971	*/
1972	if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
1973	!name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
1974
1975	DEBUG(99, ("Could not retrieve name status for %s\n",
1976	addr));
1977	return NULL;
1978	}
1979
1980	if (!find_master_ip(name, &server_ss)) {
1981	DEBUG(99, ("Could not find master ip for %s\n", name));
1982	return NULL;
1983	}
1984
1985	*pp_workgroup_out = talloc_strdup(ctx, name);
1986
1987	DEBUG(4, ("found master browser %s, %s\n", name, addr));
1988
1989	print_sockaddr(addr, sizeof(addr), &server_ss);
1990	cli = get_ipc_connect(addr, &server_ss, user_info);
1991
1992	return cli;
1993	}
1994
1995	/*
1996	* Return the IP address and workgroup of a master browser on the network, and
1997	* connect to it.
1998	*/
1999
2000	struct cli_state get_ipc_connect_master_ip_bcast(TALLOC_CTX ctx,
2001	const struct user_auth_info *user_info,
2002	char **pp_workgroup_out)
2003	{
2004	struct ip_service *ip_list;
2005	struct cli_state *cli;
2006	int i, count;
2007
2008	*pp_workgroup_out = NULL;
2009
2010	DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
2011
2012	/* Go looking for workgroups by broadcasting on the local network */
2013
2014	if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
2015	&count))) {
2016	DEBUG(99, ("No master browsers responded\n"));
2017	return False;
2018	}
2019
2020	for (i = 0; i < count; i++) {
2021	char addr[INET6_ADDRSTRLEN];
2022	print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
2023	DEBUG(99, ("Found master browser %s\n", addr));
2024
2025	cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
2026	user_info, pp_workgroup_out);
2027	if (cli)
2028	return(cli);
2029	}
2030
2031	return NULL;
2032	}

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