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source: branches/samba-3.0/source/libsmb/cliconnect.c@ 124

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Last change on this file since 124 was 124, checked in by Paul Smedley, 17 years ago
Update source to 3.0.28a
File size: 57.4 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 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20	*/
21
22	#include "includes.h"
23
24	extern pstring user_socket_options;
25
26	static const struct {
27	int prot;
28	const char *name;
29	} prots[] = {
30	{PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
31	{PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
32	{PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
33	{PROTOCOL_LANMAN1,"LANMAN1.0"},
34	{PROTOCOL_LANMAN2,"LM1.2X002"},
35	{PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
36	{PROTOCOL_LANMAN2,"LANMAN2.1"},
37	{PROTOCOL_LANMAN2,"Samba"},
38	{PROTOCOL_NT1,"NT LANMAN 1.0"},
39	{PROTOCOL_NT1,"NT LM 0.12"},
40	{-1,NULL}
41	};
42
43	static const char star_smbserver_name = "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, 0);
67	DATA_BLOB lm_response = data_blob(NULL, 0);
68	fstring pword;
69	char *p;
70
71	if (passlen > sizeof(pword)-1) {
72	return NT_STATUS_INVALID_PARAMETER;
73	}
74
75	/* LANMAN servers predate NT status codes and Unicode and ignore those
76	smb flags so we must disable the corresponding default capabilities
77	that would otherwise cause the Unicode and NT Status flags to be
78	set (and even returned by the server) */
79
80	cli->capabilities &= ~(CAP_UNICODE \| CAP_STATUS32);
81
82	/* if in share level security then don't send a password now */
83	if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
84	passlen = 0;
85
86	if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
87	/* Encrypted mode needed, and non encrypted password supplied. */
88	lm_response = data_blob(NULL, 24);
89	if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
90	DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
91	return NT_STATUS_ACCESS_DENIED;
92	}
93	} else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
94	/* Encrypted mode needed, and encrypted password supplied. */
95	lm_response = data_blob(pass, passlen);
96	} else if (passlen > 0) {
97	/* Plaintext mode needed, assume plaintext supplied. */
98	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
99	lm_response = data_blob(pass, passlen);
100	}
101
102	/* send a session setup command */
103	memset(cli->outbuf,'\0',smb_size);
104	set_message(cli->outbuf,10, 0, True);
105	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
106	cli_setup_packet(cli);
107
108	SCVAL(cli->outbuf,smb_vwv0,0xFF);
109	SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
110	SSVAL(cli->outbuf,smb_vwv3,2);
111	SSVAL(cli->outbuf,smb_vwv4,1);
112	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
113	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
114
115	p = smb_buf(cli->outbuf);
116	memcpy(p,lm_response.data,lm_response.length);
117	p += lm_response.length;
118	p += clistr_push(cli, p, user, -1, STR_TERMINATE\|STR_UPPER);
119	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
120	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
121	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
122	cli_setup_bcc(cli, p);
123
124	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
125	return cli_nt_error(cli);
126	}
127
128	show_msg(cli->inbuf);
129
130	if (cli_is_error(cli)) {
131	return cli_nt_error(cli);
132	}
133
134	/* use the returned vuid from now on */
135	cli->vuid = SVAL(cli->inbuf,smb_uid);
136	fstrcpy(cli->user_name, user);
137
138	if (session_key.data) {
139	/* Have plaintext orginal */
140	cli_set_session_key(cli, session_key);
141	}
142
143	return NT_STATUS_OK;
144	}
145
146	/****************************************************************************
147	Work out suitable capabilities to offer the server.
148	****************************************************************************/
149
150	static uint32 cli_session_setup_capabilities(struct cli_state *cli)
151	{
152	uint32 capabilities = CAP_NT_SMBS;
153
154	if (!cli->force_dos_errors)
155	capabilities \|= CAP_STATUS32;
156
157	if (cli->use_level_II_oplocks)
158	capabilities \|= CAP_LEVEL_II_OPLOCKS;
159
160	capabilities \|= (cli->capabilities & (CAP_UNICODE\|CAP_LARGE_FILES\|CAP_LARGE_READX\|CAP_LARGE_WRITEX\|CAP_DFS));
161	return capabilities;
162	}
163
164	/****************************************************************************
165	Do a NT1 guest session setup.
166	****************************************************************************/
167
168	static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
169	{
170	char *p;
171	uint32 capabilities = cli_session_setup_capabilities(cli);
172
173	memset(cli->outbuf, '\0', smb_size);
174	set_message(cli->outbuf,13,0,True);
175	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
176	cli_setup_packet(cli);
177
178	SCVAL(cli->outbuf,smb_vwv0,0xFF);
179	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
180	SSVAL(cli->outbuf,smb_vwv3,2);
181	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
182	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
183	SSVAL(cli->outbuf,smb_vwv7,0);
184	SSVAL(cli->outbuf,smb_vwv8,0);
185	SIVAL(cli->outbuf,smb_vwv11,capabilities);
186	p = smb_buf(cli->outbuf);
187	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
188	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
189	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
190	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
191	cli_setup_bcc(cli, p);
192
193	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
194	return cli_nt_error(cli);
195	}
196
197	show_msg(cli->inbuf);
198
199	if (cli_is_error(cli)) {
200	return cli_nt_error(cli);
201	}
202
203	cli->vuid = SVAL(cli->inbuf,smb_uid);
204
205	p = smb_buf(cli->inbuf);
206	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
207	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
208	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
209
210	if (strstr(cli->server_type, "Samba")) {
211	cli->is_samba = True;
212	}
213
214	fstrcpy(cli->user_name, "");
215
216	return NT_STATUS_OK;
217	}
218
219	/****************************************************************************
220	Do a NT1 plaintext session setup.
221	****************************************************************************/
222
223	static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
224	const char user, const char pass,
225	const char *workgroup)
226	{
227	uint32 capabilities = cli_session_setup_capabilities(cli);
228	char *p;
229	fstring lanman;
230
231	fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
232
233	memset(cli->outbuf, '\0', smb_size);
234	set_message(cli->outbuf,13,0,True);
235	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
236	cli_setup_packet(cli);
237
238	SCVAL(cli->outbuf,smb_vwv0,0xFF);
239	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
240	SSVAL(cli->outbuf,smb_vwv3,2);
241	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
242	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
243	SSVAL(cli->outbuf,smb_vwv8,0);
244	SIVAL(cli->outbuf,smb_vwv11,capabilities);
245	p = smb_buf(cli->outbuf);
246
247	/* check wether to send the ASCII or UNICODE version of the password */
248
249	if ( (capabilities & CAP_UNICODE) == 0 ) {
250	p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
251	SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
252	}
253	else {
254	p += clistr_push(cli, p, pass, -1, STR_UNICODE\|STR_TERMINATE); /* unicode password */
255	SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
256	}
257
258	p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
259	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
260	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
261	p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
262	cli_setup_bcc(cli, p);
263
264	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
265	return cli_nt_error(cli);
266	}
267
268	show_msg(cli->inbuf);
269
270	if (cli_is_error(cli)) {
271	return cli_nt_error(cli);
272	}
273
274	cli->vuid = SVAL(cli->inbuf,smb_uid);
275	p = smb_buf(cli->inbuf);
276	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
277	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
278	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
279	fstrcpy(cli->user_name, user);
280
281	if (strstr(cli->server_type, "Samba")) {
282	cli->is_samba = True;
283	}
284
285	return NT_STATUS_OK;
286	}
287
288	/****************************************************************************
289	do a NT1 NTLM/LM encrypted session setup - for when extended security
290	is not negotiated.
291	@param cli client state to create do session setup on
292	@param user username
293	@param pass either cleartext password (passlen !=24) or LM response.
294	@param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
295	@param workgroup The user's domain.
296	****************************************************************************/
297
298	static NTSTATUS cli_session_setup_nt1(struct cli_state cli, const char user,
299	const char *pass, size_t passlen,
300	const char *ntpass, size_t ntpasslen,
301	const char *workgroup)
302	{
303	uint32 capabilities = cli_session_setup_capabilities(cli);
304	DATA_BLOB lm_response = data_blob(NULL, 0);
305	DATA_BLOB nt_response = data_blob(NULL, 0);
306	DATA_BLOB session_key = data_blob(NULL, 0);
307	NTSTATUS result;
308	char *p;
309
310	if (passlen == 0) {
311	/* do nothing - guest login */
312	} else if (passlen != 24) {
313	if (lp_client_ntlmv2_auth()) {
314	DATA_BLOB server_chal;
315	DATA_BLOB names_blob;
316	server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
317
318	/* note that the 'workgroup' here is a best guess - we don't know
319	the server's domain at this point. The 'server name' is also
320	dodgy...
321	*/
322	names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
323
324	if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
325	&names_blob,
326	&lm_response, &nt_response, &session_key)) {
327	data_blob_free(&names_blob);
328	data_blob_free(&server_chal);
329	return NT_STATUS_ACCESS_DENIED;
330	}
331	data_blob_free(&names_blob);
332	data_blob_free(&server_chal);
333
334	} else {
335	uchar nt_hash[16];
336	E_md4hash(pass, nt_hash);
337
338	#ifdef LANMAN_ONLY
339	nt_response = data_blob(NULL, 0);
340	#else
341	nt_response = data_blob(NULL, 24);
342	SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
343	#endif
344	/* non encrypted password supplied. Ignore ntpass. */
345	if (lp_client_lanman_auth()) {
346	lm_response = data_blob(NULL, 24);
347	if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
348	/* Oops, the LM response is invalid, just put
349	the NT response there instead */
350	data_blob_free(&lm_response);
351	lm_response = data_blob(nt_response.data, nt_response.length);
352	}
353	} else {
354	/* LM disabled, place NT# in LM field instead */
355	lm_response = data_blob(nt_response.data, nt_response.length);
356	}
357
358	session_key = data_blob(NULL, 16);
359	#ifdef LANMAN_ONLY
360	E_deshash(pass, session_key.data);
361	memset(&session_key.data[8], '\0', 8);
362	#else
363	SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
364	#endif
365	}
366	#ifdef LANMAN_ONLY
367	cli_simple_set_signing(cli, session_key, lm_response);
368	#else
369	cli_simple_set_signing(cli, session_key, nt_response);
370	#endif
371	} else {
372	/* pre-encrypted password supplied. Only used for
373	security=server, can't do
374	signing because we don't have original key */
375
376	lm_response = data_blob(pass, passlen);
377	nt_response = data_blob(ntpass, ntpasslen);
378	}
379
380	/* send a session setup command */
381	memset(cli->outbuf,'\0',smb_size);
382
383	set_message(cli->outbuf,13,0,True);
384	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
385	cli_setup_packet(cli);
386
387	SCVAL(cli->outbuf,smb_vwv0,0xFF);
388	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
389	SSVAL(cli->outbuf,smb_vwv3,2);
390	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
391	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
392	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
393	SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
394	SIVAL(cli->outbuf,smb_vwv11,capabilities);
395	p = smb_buf(cli->outbuf);
396	if (lm_response.length) {
397	memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
398	}
399	if (nt_response.length) {
400	memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
401	}
402	p += clistr_push(cli, p, user, -1, STR_TERMINATE);
403
404	/* Upper case here might help some NTLMv2 implementations */
405	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
406	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
407	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
408	cli_setup_bcc(cli, p);
409
410	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
411	result = cli_nt_error(cli);
412	goto end;
413	}
414
415	/* show_msg(cli->inbuf); */
416
417	if (cli_is_error(cli)) {
418	result = cli_nt_error(cli);
419	goto end;
420	}
421
422	/* use the returned vuid from now on */
423	cli->vuid = SVAL(cli->inbuf,smb_uid);
424
425	p = smb_buf(cli->inbuf);
426	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
427	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
428	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
429
430	if (strstr(cli->server_type, "Samba")) {
431	cli->is_samba = True;
432	}
433
434	fstrcpy(cli->user_name, user);
435
436	if (session_key.data) {
437	/* Have plaintext orginal */
438	cli_set_session_key(cli, session_key);
439	}
440
441	result = NT_STATUS_OK;
442	end:
443	data_blob_free(&lm_response);
444	data_blob_free(&nt_response);
445	data_blob_free(&session_key);
446	return result;
447	}
448
449	/****************************************************************************
450	Send a extended security session setup blob
451	****************************************************************************/
452
453	static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
454	{
455	uint32 capabilities = cli_session_setup_capabilities(cli);
456	char *p;
457
458	capabilities \|= CAP_EXTENDED_SECURITY;
459
460	/* send a session setup command */
461	memset(cli->outbuf,'\0',smb_size);
462
463	set_message(cli->outbuf,12,0,True);
464	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
465
466	cli_setup_packet(cli);
467
468	SCVAL(cli->outbuf,smb_vwv0,0xFF);
469	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
470	SSVAL(cli->outbuf,smb_vwv3,2);
471	SSVAL(cli->outbuf,smb_vwv4,1);
472	SIVAL(cli->outbuf,smb_vwv5,0);
473	SSVAL(cli->outbuf,smb_vwv7,blob.length);
474	SIVAL(cli->outbuf,smb_vwv10,capabilities);
475	p = smb_buf(cli->outbuf);
476	memcpy(p, blob.data, blob.length);
477	p += blob.length;
478	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
479	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
480	cli_setup_bcc(cli, p);
481	return cli_send_smb(cli);
482	}
483
484	/****************************************************************************
485	Send a extended security session setup blob, returning a reply blob.
486	****************************************************************************/
487
488	static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
489	{
490	DATA_BLOB blob2 = data_blob(NULL, 0);
491	char *p;
492	size_t len;
493
494	if (!cli_receive_smb(cli))
495	return blob2;
496
497	show_msg(cli->inbuf);
498
499	if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
500	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
501	return blob2;
502	}
503
504	/* use the returned vuid from now on */
505	cli->vuid = SVAL(cli->inbuf,smb_uid);
506
507	p = smb_buf(cli->inbuf);
508
509	blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
510
511	p += blob2.length;
512	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
513
514	/* w2k with kerberos doesn't properly null terminate this field */
515	len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
516	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
517
518	return blob2;
519	}
520
521	#ifdef HAVE_KRB5
522	/****************************************************************************
523	Send a extended security session setup blob, returning a reply blob.
524	****************************************************************************/
525
526	/* The following is calculated from :
527	* (smb_size-4) = 35
528	* (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
529	* (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
530	* end of packet.
531	*/
532
533	#define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
534
535	static BOOL cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob, DATA_BLOB session_key_krb5)
536	{
537	int32 remaining = blob.length;
538	int32 cur = 0;
539	DATA_BLOB send_blob = data_blob(NULL, 0);
540	int32 max_blob_size = 0;
541	DATA_BLOB receive_blob = data_blob(NULL, 0);
542
543	if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
544	DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
545	"(was %u, need minimum %u)\n",
546	(unsigned int)cli->max_xmit,
547	BASE_SESSSETUP_BLOB_PACKET_SIZE));
548	cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
549	return False;
550	}
551
552	max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
553
554	while ( remaining > 0) {
555	if (remaining >= max_blob_size) {
556	send_blob.length = max_blob_size;
557	remaining -= max_blob_size;
558	} else {
559	DATA_BLOB null_blob = data_blob(NULL, 0);
560
561	send_blob.length = remaining;
562	remaining = 0;
563
564	/* This is the last packet in the sequence - turn signing on. */
565	cli_simple_set_signing(cli, session_key_krb5, null_blob);
566	}
567
568	send_blob.data = &blob.data[cur];
569	cur += send_blob.length;
570
571	DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
572	(unsigned int)remaining,
573	(unsigned int)send_blob.length,
574	(unsigned int)cur ));
575
576	if (!cli_session_setup_blob_send(cli, send_blob)) {
577	DEBUG(0, ("cli_session_setup_blob: send failed\n"));
578	return False;
579	}
580
581	receive_blob = cli_session_setup_blob_receive(cli);
582	data_blob_free(&receive_blob);
583
584	if (cli_is_error(cli) &&
585	!NT_STATUS_EQUAL( cli_get_nt_error(cli),
586	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
587	DEBUG(0, ("cli_session_setup_blob: recieve failed (%s)\n",
588	nt_errstr(cli_get_nt_error(cli)) ));
589	cli->vuid = 0;
590	return False;
591	}
592	}
593
594	return True;
595	}
596
597	/****************************************************************************
598	Use in-memory credentials cache
599	****************************************************************************/
600
601	static void use_in_memory_ccache(void) {
602	setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
603	}
604
605	/****************************************************************************
606	Do a spnego/kerberos encrypted session setup.
607	****************************************************************************/
608
609	static ADS_STATUS cli_session_setup_kerberos(struct cli_state cli, const char principal, const char *workgroup)
610	{
611	DATA_BLOB negTokenTarg;
612	DATA_BLOB session_key_krb5;
613	int rc;
614
615	DEBUG(2,("Doing kerberos session setup\n"));
616
617	/* generate the encapsulated kerberos5 ticket */
618	rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
619
620	if (rc) {
621	DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
622	error_message(rc)));
623	return ADS_ERROR_KRB5(rc);
624	}
625
626	#if 0
627	file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
628	#endif
629
630	if (!cli_session_setup_blob(cli, negTokenTarg, session_key_krb5)) {
631	data_blob_free(&negTokenTarg);
632	data_blob_free(&session_key_krb5);
633	return ADS_ERROR_NT(cli_nt_error(cli));
634	}
635
636	cli_set_session_key(cli, session_key_krb5);
637
638	data_blob_free(&negTokenTarg);
639	data_blob_free(&session_key_krb5);
640
641	if (cli_is_error(cli)) {
642	if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
643	return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
644	}
645	}
646	return ADS_ERROR_NT(cli_nt_error(cli));
647	}
648	#endif /* HAVE_KRB5 */
649
650
651	/****************************************************************************
652	Do a spnego/NTLMSSP encrypted session setup.
653	****************************************************************************/
654
655	static NTSTATUS cli_session_setup_ntlmssp(struct cli_state cli, const char user,
656	const char pass, const char domain)
657	{
658	struct ntlmssp_state *ntlmssp_state;
659	NTSTATUS nt_status;
660	int turn = 1;
661	DATA_BLOB msg1;
662	DATA_BLOB blob = data_blob(NULL, 0);
663	DATA_BLOB blob_in = data_blob(NULL, 0);
664	DATA_BLOB blob_out = data_blob(NULL, 0);
665
666	cli_temp_set_signing(cli);
667
668	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
669	return nt_status;
670	}
671	ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
672
673	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
674	return nt_status;
675	}
676	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
677	return nt_status;
678	}
679	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
680	return nt_status;
681	}
682
683	do {
684	nt_status = ntlmssp_update(ntlmssp_state,
685	blob_in, &blob_out);
686	data_blob_free(&blob_in);
687	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) \|\| NT_STATUS_IS_OK(nt_status)) {
688	if (turn == 1) {
689	/* and wrap it in a SPNEGO wrapper */
690	msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
691	} else {
692	/* wrap it in SPNEGO */
693	msg1 = spnego_gen_auth(blob_out);
694	}
695
696	/* now send that blob on its way */
697	if (!cli_session_setup_blob_send(cli, msg1)) {
698	DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
699	nt_status = NT_STATUS_UNSUCCESSFUL;
700	} else {
701	blob = cli_session_setup_blob_receive(cli);
702
703	nt_status = cli_nt_error(cli);
704	if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
705	if (cli->smb_rw_error == READ_BAD_SIG) {
706	nt_status = NT_STATUS_ACCESS_DENIED;
707	} else {
708	nt_status = NT_STATUS_UNSUCCESSFUL;
709	}
710	}
711	}
712	data_blob_free(&msg1);
713	}
714
715	if (!blob.length) {
716	if (NT_STATUS_IS_OK(nt_status)) {
717	nt_status = NT_STATUS_UNSUCCESSFUL;
718	}
719	} else if ((turn == 1) &&
720	NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
721	DATA_BLOB tmp_blob = data_blob(NULL, 0);
722	/* the server might give us back two challenges */
723	if (!spnego_parse_challenge(blob, &blob_in,
724	&tmp_blob)) {
725	DEBUG(3,("Failed to parse challenges\n"));
726	nt_status = NT_STATUS_INVALID_PARAMETER;
727	}
728	data_blob_free(&tmp_blob);
729	} else {
730	if (!spnego_parse_auth_response(blob, nt_status,
731	&blob_in)) {
732	DEBUG(3,("Failed to parse auth response\n"));
733	if (NT_STATUS_IS_OK(nt_status)
734	\|\| NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
735	nt_status = NT_STATUS_INVALID_PARAMETER;
736	}
737	}
738	data_blob_free(&blob);
739	data_blob_free(&blob_out);
740	turn++;
741	} while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
742
743	data_blob_free(&blob_in);
744
745	if (NT_STATUS_IS_OK(nt_status)) {
746
747	DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
748	ntlmssp_state->session_key.length);
749	DATA_BLOB null_blob = data_blob(NULL, 0);
750	BOOL res;
751
752	fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
753	cli_set_session_key(cli, ntlmssp_state->session_key);
754
755	res = cli_simple_set_signing(cli, key, null_blob);
756
757	data_blob_free(&key);
758
759	if (res) {
760
761	/* 'resign' the last message, so we get the right sequence numbers
762	for checking the first reply from the server */
763	cli_calculate_sign_mac(cli);
764
765	if (!cli_check_sign_mac(cli)) {
766	nt_status = NT_STATUS_ACCESS_DENIED;
767	}
768	}
769	}
770
771	/* we have a reference conter on ntlmssp_state, if we are signing
772	then the state will be kept by the signing engine */
773
774	ntlmssp_end(&ntlmssp_state);
775
776	if (!NT_STATUS_IS_OK(nt_status)) {
777	cli->vuid = 0;
778	}
779	return nt_status;
780	}
781
782	/****************************************************************************
783	Do a spnego encrypted session setup.
784	****************************************************************************/
785
786	ADS_STATUS cli_session_setup_spnego(struct cli_state cli, const char user,
787	const char pass, const char domain)
788	{
789	char *principal;
790	char *OIDs[ASN1_MAX_OIDS];
791	int i;
792	BOOL got_kerberos_mechanism = False;
793	DATA_BLOB blob;
794
795	DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
796
797	/* the server might not even do spnego */
798	if (cli->secblob.length <= 16) {
799	DEBUG(3,("server didn't supply a full spnego negprot\n"));
800	goto ntlmssp;
801	}
802
803	#if 0
804	file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
805	#endif
806
807	/* there is 16 bytes of GUID before the real spnego packet starts */
808	blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
809
810	/* the server sent us the first part of the SPNEGO exchange in the negprot
811	reply */
812	if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
813	data_blob_free(&blob);
814	return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
815	}
816	data_blob_free(&blob);
817
818	/* make sure the server understands kerberos */
819	for (i=0;OIDs[i];i++) {
820	DEBUG(3,("got OID=%s\n", OIDs[i]));
821	if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 \|\|
822	strcmp(OIDs[i], OID_KERBEROS5) == 0) {
823	got_kerberos_mechanism = True;
824	}
825	free(OIDs[i]);
826	}
827
828	DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
829
830	if (got_kerberos_mechanism && (principal == NULL)) {
831	/*
832	* It is WRONG to depend on the principal sent in the negprot
833	* reply, but right now we do it. So for safety (don't
834	* segfault later) disable Kerberos when no principal was
835	* sent. -- VL
836	*/
837	DEBUG(1, ("Kerberos mech was offered, but no principal was "
838	"sent, disabling Kerberos\n"));
839	cli->use_kerberos = False;
840	}
841
842	fstrcpy(cli->user_name, user);
843
844	#ifdef HAVE_KRB5
845	/* If password is set we reauthenticate to kerberos server
846	* and do not store results */
847
848	if (got_kerberos_mechanism && cli->use_kerberos) {
849	ADS_STATUS rc;
850
851	if (pass && *pass) {
852	int ret;
853
854	use_in_memory_ccache();
855	ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
856
857	if (ret){
858	SAFE_FREE(principal);
859	DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
860	if (cli->fallback_after_kerberos)
861	goto ntlmssp;
862	return ADS_ERROR_KRB5(ret);
863	}
864	}
865
866	/* If we get a bad principal, try to guess it if
867	we have a valid host NetBIOS name.
868	*/
869	if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
870	SAFE_FREE(principal);
871	}
872	if (principal == NULL &&
873	!is_ipaddress(cli->desthost) &&
874	!strequal(star_smbserver_name,
875	cli->desthost)) {
876	char *realm = NULL;
877	char *machine = NULL;
878	char *host = NULL;
879	DEBUG(3,("cli_session_setup_spnego: got a "
880	"bad server principal, trying to guess ...\n"));
881
882	host = strchr_m(cli->desthost, '.');
883	if (host) {
884	machine = SMB_STRNDUP(cli->desthost,
885	host - cli->desthost);
886	} else {
887	machine = SMB_STRDUP(cli->desthost);
888	}
889	if (machine == NULL) {
890	return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
891	}
892
893	realm = kerberos_get_default_realm_from_ccache();
894	if (realm && *realm) {
895	if (asprintf(&principal, "%s$@%s",
896	machine, realm) < 0) {
897	SAFE_FREE(machine);
898	SAFE_FREE(realm);
899	return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
900	}
901	DEBUG(3,("cli_session_setup_spnego: guessed "
902	"server principal=%s\n",
903	principal ? principal : "<null>"));
904	}
905	SAFE_FREE(machine);
906	SAFE_FREE(realm);
907	}
908
909	if (principal) {
910	rc = cli_session_setup_kerberos(cli, principal, domain);
911	if (ADS_ERR_OK(rc) \|\| !cli->fallback_after_kerberos) {
912	SAFE_FREE(principal);
913	return rc;
914	}
915	}
916	}
917	#endif
918
919	SAFE_FREE(principal);
920
921	ntlmssp:
922
923	return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
924	}
925
926	/****************************************************************************
927	Send a session setup. The username and workgroup is in UNIX character
928	format and must be converted to DOS codepage format before sending. If the
929	password is in plaintext, the same should be done.
930	****************************************************************************/
931
932	NTSTATUS cli_session_setup(struct cli_state *cli,
933	const char *user,
934	const char *pass, int passlen,
935	const char *ntpass, int ntpasslen,
936	const char *workgroup)
937	{
938	char *p;
939	fstring user2;
940
941	/* allow for workgroups as part of the username */
942	fstrcpy(user2, user);
943	if ((p=strchr_m(user2,'\\')) \|\| (p=strchr_m(user2,'/')) \|\|
944	(p=strchr_m(user2,*lp_winbind_separator()))) {
945	*p = 0;
946	user = p+1;
947	workgroup = user2;
948	}
949
950	if (cli->protocol < PROTOCOL_LANMAN1) {
951	return NT_STATUS_OK;
952	}
953
954	/* now work out what sort of session setup we are going to
955	do. I have split this into separate functions to make the
956	flow a bit easier to understand (tridge) */
957
958	/* if its an older server then we have to use the older request format */
959
960	if (cli->protocol < PROTOCOL_NT1) {
961	if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
962	DEBUG(1, ("Server requested LM password but 'client lanman auth'"
963	" is disabled\n"));
964	return NT_STATUS_ACCESS_DENIED;
965	}
966
967	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
968	!lp_client_plaintext_auth() && (*pass)) {
969	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
970	" is disabled\n"));
971	return NT_STATUS_ACCESS_DENIED;
972	}
973
974	return cli_session_setup_lanman2(cli, user, pass, passlen,
975	workgroup);
976	}
977
978	/* if no user is supplied then we have to do an anonymous connection.
979	passwords are ignored */
980
981	if (!user \|\| !*user)
982	return cli_session_setup_guest(cli);
983
984	/* if the server is share level then send a plaintext null
985	password at this point. The password is sent in the tree
986	connect */
987
988	if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
989	return cli_session_setup_plaintext(cli, user, "", workgroup);
990
991	/* if the server doesn't support encryption then we have to use
992	plaintext. The second password is ignored */
993
994	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
995	if (!lp_client_plaintext_auth() && (*pass)) {
996	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
997	" is disabled\n"));
998	return NT_STATUS_ACCESS_DENIED;
999	}
1000	return cli_session_setup_plaintext(cli, user, pass, workgroup);
1001	}
1002
1003	/* if the server supports extended security then use SPNEGO */
1004
1005	if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1006	ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
1007	if (!ADS_ERR_OK(status)) {
1008	DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1009	return ads_ntstatus(status);
1010	}
1011	} else {
1012	NTSTATUS status;
1013
1014	/* otherwise do a NT1 style session setup */
1015	status = cli_session_setup_nt1(cli, user, pass, passlen,
1016	ntpass, ntpasslen, workgroup);
1017	if (!NT_STATUS_IS_OK(status)) {
1018	DEBUG(3,("cli_session_setup: NT1 session setup "
1019	"failed: %s\n", nt_errstr(status)));
1020	return status;
1021	}
1022	}
1023
1024	if (strstr(cli->server_type, "Samba")) {
1025	cli->is_samba = True;
1026	}
1027
1028	return NT_STATUS_OK;
1029
1030	}
1031
1032	/****************************************************************************
1033	Send a uloggoff.
1034	*****************************************************************************/
1035
1036	BOOL cli_ulogoff(struct cli_state *cli)
1037	{
1038	memset(cli->outbuf,'\0',smb_size);
1039	set_message(cli->outbuf,2,0,True);
1040	SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1041	cli_setup_packet(cli);
1042	SSVAL(cli->outbuf,smb_vwv0,0xFF);
1043	SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
1044
1045	cli_send_smb(cli);
1046	if (!cli_receive_smb(cli))
1047	return False;
1048
1049	if (cli_is_error(cli)) {
1050	return False;
1051	}
1052
1053	cli->cnum = -1;
1054	return True;
1055	}
1056
1057	/****************************************************************************
1058	Send a tconX.
1059	****************************************************************************/
1060
1061	BOOL cli_send_tconX(struct cli_state *cli,
1062	const char share, const char dev, const char *pass, int passlen)
1063	{
1064	fstring fullshare, pword;
1065	char *p;
1066	memset(cli->outbuf,'\0',smb_size);
1067	memset(cli->inbuf,'\0',smb_size);
1068
1069	fstrcpy(cli->share, share);
1070
1071	/* in user level security don't send a password now */
1072	if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1073	passlen = 1;
1074	pass = "";
1075	} else if (!pass) {
1076	DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1077	return False;
1078	}
1079
1080	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1081	*pass && passlen != 24) {
1082	if (!lp_client_lanman_auth()) {
1083	DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
1084	" is disabled\n"));
1085	return False;
1086	}
1087
1088	/*
1089	* Non-encrypted passwords - convert to DOS codepage before encryption.
1090	*/
1091	passlen = 24;
1092	SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1093	} else {
1094	if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL\|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1095	if (!lp_client_plaintext_auth() && (*pass)) {
1096	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1097	" is disabled\n"));
1098	return False;
1099	}
1100
1101	/*
1102	* Non-encrypted passwords - convert to DOS codepage before using.
1103	*/
1104	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1105
1106	} else {
1107	if (passlen) {
1108	memcpy(pword, pass, passlen);
1109	}
1110	}
1111	}
1112
1113	slprintf(fullshare, sizeof(fullshare)-1,
1114	"\\\\%s\\%s", cli->desthost, share);
1115
1116	set_message(cli->outbuf,4, 0, True);
1117	SCVAL(cli->outbuf,smb_com,SMBtconX);
1118	cli_setup_packet(cli);
1119
1120	SSVAL(cli->outbuf,smb_vwv0,0xFF);
1121	SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1122	SSVAL(cli->outbuf,smb_vwv3,passlen);
1123
1124	p = smb_buf(cli->outbuf);
1125	if (passlen) {
1126	memcpy(p,pword,passlen);
1127	}
1128	p += passlen;
1129	p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE \|STR_UPPER);
1130	p += clistr_push(cli, p, dev, -1, STR_TERMINATE \|STR_UPPER \| STR_ASCII);
1131
1132	cli_setup_bcc(cli, p);
1133
1134	cli_send_smb(cli);
1135	if (!cli_receive_smb(cli))
1136	return False;
1137
1138	if (cli_is_error(cli))
1139	return False;
1140
1141	clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE\|STR_ASCII);
1142
1143	if (cli->protocol >= PROTOCOL_NT1 &&
1144	smb_buflen(cli->inbuf) == 3) {
1145	/* almost certainly win95 - enable bug fixes */
1146	cli->win95 = True;
1147	}
1148
1149	/* Make sure that we have the optional support 16-bit field. WCT > 2 */
1150	/* Avoids issues when connecting to Win9x boxes sharing files */
1151
1152	cli->dfsroot = False;
1153	if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1154	cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1155
1156	cli->cnum = SVAL(cli->inbuf,smb_tid);
1157	return True;
1158	}
1159
1160	/****************************************************************************
1161	Send a tree disconnect.
1162	****************************************************************************/
1163
1164	BOOL cli_tdis(struct cli_state *cli)
1165	{
1166	memset(cli->outbuf,'\0',smb_size);
1167	set_message(cli->outbuf,0,0,True);
1168	SCVAL(cli->outbuf,smb_com,SMBtdis);
1169	SSVAL(cli->outbuf,smb_tid,cli->cnum);
1170	cli_setup_packet(cli);
1171
1172	cli_send_smb(cli);
1173	if (!cli_receive_smb(cli))
1174	return False;
1175
1176	if (cli_is_error(cli)) {
1177	return False;
1178	}
1179
1180	cli->cnum = -1;
1181	return True;
1182	}
1183
1184	/****************************************************************************
1185	Send a negprot command.
1186	****************************************************************************/
1187
1188	void cli_negprot_send(struct cli_state *cli)
1189	{
1190	char *p;
1191	int numprots;
1192
1193	if (cli->protocol < PROTOCOL_NT1)
1194	cli->use_spnego = False;
1195
1196	memset(cli->outbuf,'\0',smb_size);
1197
1198	/* setup the protocol strings */
1199	set_message(cli->outbuf,0,0,True);
1200
1201	p = smb_buf(cli->outbuf);
1202	for (numprots=0;
1203	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1204	numprots++) {
1205	*p++ = 2;
1206	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1207	}
1208
1209	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1210	cli_setup_bcc(cli, p);
1211	cli_setup_packet(cli);
1212
1213	SCVAL(smb_buf(cli->outbuf),0,2);
1214
1215	cli_send_smb(cli);
1216	}
1217
1218	/****************************************************************************
1219	Send a negprot command.
1220	****************************************************************************/
1221
1222	BOOL cli_negprot(struct cli_state *cli)
1223	{
1224	char *p;
1225	int numprots;
1226	int plength;
1227
1228	if (cli->protocol < PROTOCOL_NT1)
1229	cli->use_spnego = False;
1230
1231	memset(cli->outbuf,'\0',smb_size);
1232
1233	/* setup the protocol strings */
1234	for (plength=0,numprots=0;
1235	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1236	numprots++)
1237	plength += strlen(prots[numprots].name)+2;
1238
1239	set_message(cli->outbuf,0,plength,True);
1240
1241	p = smb_buf(cli->outbuf);
1242	for (numprots=0;
1243	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1244	numprots++) {
1245	*p++ = 2;
1246	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1247	}
1248
1249	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1250	cli_setup_packet(cli);
1251
1252	SCVAL(smb_buf(cli->outbuf),0,2);
1253
1254	cli_send_smb(cli);
1255	if (!cli_receive_smb(cli))
1256	return False;
1257
1258	show_msg(cli->inbuf);
1259
1260	if (cli_is_error(cli) \|\|
1261	((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1262	return(False);
1263	}
1264
1265	cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1266
1267	if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1268	DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1269	return False;
1270	}
1271
1272	if (cli->protocol >= PROTOCOL_NT1) {
1273	struct timespec ts;
1274	/* NT protocol */
1275	cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1276	cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1277	cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1278	cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1279	cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1280	cli->serverzone *= 60;
1281	/* this time arrives in real GMT */
1282	ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1283	cli->servertime = ts.tv_sec;
1284	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1285	cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1286	if (cli->capabilities & CAP_RAW_MODE) {
1287	cli->readbraw_supported = True;
1288	cli->writebraw_supported = True;
1289	}
1290	/* work out if they sent us a workgroup */
1291	if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1292	smb_buflen(cli->inbuf) > 8) {
1293	clistr_pull(cli, cli->server_domain,
1294	smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1295	smb_buflen(cli->inbuf)-8, STR_UNICODE\|STR_NOALIGN);
1296	}
1297
1298	/*
1299	* As signing is slow we only turn it on if either the client or
1300	* the server require it. JRA.
1301	*/
1302
1303	if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1304	/* Fail if server says signing is mandatory and we don't want to support it. */
1305	if (!cli->sign_info.allow_smb_signing) {
1306	DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1307	return False;
1308	}
1309	cli->sign_info.negotiated_smb_signing = True;
1310	cli->sign_info.mandatory_signing = True;
1311	} else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1312	/* Fail if client says signing is mandatory and the server doesn't support it. */
1313	if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1314	DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1315	return False;
1316	}
1317	cli->sign_info.negotiated_smb_signing = True;
1318	cli->sign_info.mandatory_signing = True;
1319	} else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1320	cli->sign_info.negotiated_smb_signing = True;
1321	}
1322
1323	if (cli->capabilities & (CAP_LARGE_READX\|CAP_LARGE_WRITEX)) {
1324	SAFE_FREE(cli->outbuf);
1325	SAFE_FREE(cli->inbuf);
1326	cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1327	cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1328	cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1329	}
1330
1331	} else if (cli->protocol >= PROTOCOL_LANMAN1) {
1332	cli->use_spnego = False;
1333	cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1334	cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1335	cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1336	cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1337	cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1338	cli->serverzone *= 60;
1339	/* this time is converted to GMT by make_unix_date */
1340	cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1341	cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1342	cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1343	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1344	} else {
1345	/* the old core protocol */
1346	cli->use_spnego = False;
1347	cli->sec_mode = 0;
1348	cli->serverzone = get_time_zone(time(NULL));
1349	}
1350
1351	cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1352
1353	/* a way to force ascii SMB */
1354	if (getenv("CLI_FORCE_ASCII"))
1355	cli->capabilities &= ~CAP_UNICODE;
1356
1357	return True;
1358	}
1359
1360	/****************************************************************************
1361	Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1362	****************************************************************************/
1363
1364	BOOL cli_session_request(struct cli_state *cli,
1365	struct nmb_name calling, struct nmb_name called)
1366	{
1367	char *p;
1368	int len = 4;
1369
1370	memcpy(&(cli->calling), calling, sizeof(*calling));
1371	memcpy(&(cli->called ), called , sizeof(*called ));
1372
1373	/* put in the destination name */
1374	p = cli->outbuf+len;
1375	name_mangle(cli->called .name, p, cli->called .name_type);
1376	len += name_len(p);
1377
1378	/* and my name */
1379	p = cli->outbuf+len;
1380	name_mangle(cli->calling.name, p, cli->calling.name_type);
1381	len += name_len(p);
1382
1383	/* 445 doesn't have session request */
1384	if (cli->port == 445)
1385	return True;
1386
1387	/* send a session request (RFC 1002) */
1388	/* setup the packet length
1389	* Remove four bytes from the length count, since the length
1390	* field in the NBT Session Service header counts the number
1391	* of bytes which follow. The cli_send_smb() function knows
1392	* about this and accounts for those four bytes.
1393	* CRH.
1394	*/
1395	len -= 4;
1396	_smb_setlen(cli->outbuf,len);
1397	SCVAL(cli->outbuf,0,0x81);
1398
1399	cli_send_smb(cli);
1400	DEBUG(5,("Sent session request\n"));
1401
1402	if (!cli_receive_smb(cli))
1403	return False;
1404
1405	if (CVAL(cli->inbuf,0) == 0x84) {
1406	/* C. Hoch 9/14/95 Start */
1407	/* For information, here is the response structure.
1408	* We do the byte-twiddling to for portability.
1409	struct RetargetResponse{
1410	unsigned char type;
1411	unsigned char flags;
1412	int16 length;
1413	int32 ip_addr;
1414	int16 port;
1415	};
1416	*/
1417	int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1418	/* SESSION RETARGET */
1419	putip((char *)&cli->dest_ip,cli->inbuf+4);
1420
1421	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1422	if (cli->fd == -1)
1423	return False;
1424
1425	DEBUG(3,("Retargeted\n"));
1426
1427	set_socket_options(cli->fd,user_socket_options);
1428
1429	/* Try again */
1430	{
1431	static int depth;
1432	BOOL ret;
1433	if (depth > 4) {
1434	DEBUG(0,("Retarget recursion - failing\n"));
1435	return False;
1436	}
1437	depth++;
1438	ret = cli_session_request(cli, calling, called);
1439	depth--;
1440	return ret;
1441	}
1442	} /* C. Hoch 9/14/95 End */
1443
1444	if (CVAL(cli->inbuf,0) != 0x82) {
1445	/* This is the wrong place to put the error... JRA. */
1446	cli->rap_error = CVAL(cli->inbuf,4);
1447	return False;
1448	}
1449	return(True);
1450	}
1451
1452	/****************************************************************************
1453	Open the client sockets.
1454	****************************************************************************/
1455
1456	NTSTATUS cli_connect(struct cli_state cli, const char host, struct in_addr *ip)
1457	{
1458	int name_type = 0x20;
1459	char *p;
1460
1461	/* reasonable default hostname */
1462	if (!host) host = star_smbserver_name;
1463
1464	fstrcpy(cli->desthost, host);
1465
1466	/* allow hostnames of the form NAME#xx and do a netbios lookup */
1467	if ((p = strchr(cli->desthost, '#'))) {
1468	name_type = strtol(p+1, NULL, 16);
1469	*p = 0;
1470	}
1471
1472	if (!ip \|\| is_zero_ip(*ip)) {
1473	if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1474	return NT_STATUS_BAD_NETWORK_NAME;
1475	}
1476	if (ip) *ip = cli->dest_ip;
1477	} else {
1478	cli->dest_ip = *ip;
1479	}
1480
1481	if (getenv("LIBSMB_PROG")) {
1482	cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1483	} else {
1484	/* try 445 first, then 139 */
1485	int port = cli->port?cli->port:445;
1486	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1487	port, cli->timeout);
1488	if (cli->fd == -1 && cli->port == 0) {
1489	port = 139;
1490	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1491	port, cli->timeout);
1492	}
1493	if (cli->fd != -1)
1494	cli->port = port;
1495	}
1496	if (cli->fd == -1) {
1497	DEBUG(1,("Error connecting to %s (%s)\n",
1498	ip?inet_ntoa(*ip):host,strerror(errno)));
1499	return map_nt_error_from_unix(errno);
1500	}
1501
1502	set_socket_options(cli->fd,user_socket_options);
1503
1504	return NT_STATUS_OK;
1505	}
1506
1507	/**
1508	establishes a connection to after the negprot.
1509	@param output_cli A fully initialised cli structure, non-null only on success
1510	@param dest_host The netbios name of the remote host
1511	@param dest_ip (optional) The the destination IP, NULL for name based lookup
1512	@param port (optional) The destination port (0 for default)
1513	@param retry BOOL. Did this connection fail with a retryable error ?
1514
1515	*/
1516	NTSTATUS cli_start_connection(struct cli_state **output_cli,
1517	const char *my_name,
1518	const char *dest_host,
1519	struct in_addr *dest_ip, int port,
1520	int signing_state, int flags,
1521	BOOL *retry)
1522	{
1523	NTSTATUS nt_status;
1524	struct nmb_name calling;
1525	struct nmb_name called;
1526	struct cli_state *cli;
1527	struct in_addr ip;
1528
1529	if (retry)
1530	*retry = False;
1531
1532	if (!my_name)
1533	my_name = global_myname();
1534
1535	if (!(cli = cli_initialise())) {
1536	return NT_STATUS_NO_MEMORY;
1537	}
1538
1539	make_nmb_name(&calling, my_name, 0x0);
1540	make_nmb_name(&called , dest_host, 0x20);
1541
1542	if (cli_set_port(cli, port) != port) {
1543	cli_shutdown(cli);
1544	return NT_STATUS_UNSUCCESSFUL;
1545	}
1546
1547	cli_set_timeout(cli, 10000); /* 10 seconds. */
1548
1549	if (dest_ip)
1550	ip = *dest_ip;
1551	else
1552	ZERO_STRUCT(ip);
1553
1554	again:
1555
1556	DEBUG(3,("Connecting to host=%s\n", dest_host));
1557
1558	nt_status = cli_connect(cli, dest_host, &ip);
1559	if (!NT_STATUS_IS_OK(nt_status)) {
1560	DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1561	nmb_namestr(&called), inet_ntoa(ip), nt_errstr(nt_status) ));
1562	cli_shutdown(cli);
1563	return nt_status;
1564	}
1565
1566	if (retry)
1567	*retry = True;
1568
1569	if (!cli_session_request(cli, &calling, &called)) {
1570	char *p;
1571	DEBUG(1,("session request to %s failed (%s)\n",
1572	called.name, cli_errstr(cli)));
1573	if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1574	*p = 0;
1575	goto again;
1576	}
1577	if (strcmp(called.name, star_smbserver_name)) {
1578	make_nmb_name(&called , star_smbserver_name, 0x20);
1579	goto again;
1580	}
1581	return NT_STATUS_BAD_NETWORK_NAME;
1582	}
1583
1584	cli_setup_signing_state(cli, signing_state);
1585
1586	if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1587	cli->use_spnego = False;
1588	else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1589	cli->use_kerberos = True;
1590
1591	if (!cli_negprot(cli)) {
1592	DEBUG(1,("failed negprot\n"));
1593	nt_status = cli_nt_error(cli);
1594	if (NT_STATUS_IS_OK(nt_status)) {
1595	nt_status = NT_STATUS_UNSUCCESSFUL;
1596	}
1597	cli_shutdown(cli);
1598	return nt_status;
1599	}
1600
1601	*output_cli = cli;
1602	return NT_STATUS_OK;
1603	}
1604
1605
1606	/**
1607	establishes a connection right up to doing tconX, password specified.
1608	@param output_cli A fully initialised cli structure, non-null only on success
1609	@param dest_host The netbios name of the remote host
1610	@param dest_ip (optional) The the destination IP, NULL for name based lookup
1611	@param port (optional) The destination port (0 for default)
1612	@param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1613	@param service_type The 'type' of serivice.
1614	@param user Username, unix string
1615	@param domain User's domain
1616	@param password User's password, unencrypted unix string.
1617	@param retry BOOL. Did this connection fail with a retryable error ?
1618	*/
1619
1620	NTSTATUS cli_full_connection(struct cli_state **output_cli,
1621	const char *my_name,
1622	const char *dest_host,
1623	struct in_addr *dest_ip, int port,
1624	const char service, const char service_type,
1625	const char user, const char domain,
1626	const char *password, int flags,
1627	int signing_state,
1628	BOOL *retry)
1629	{
1630	NTSTATUS nt_status;
1631	struct cli_state *cli = NULL;
1632	int pw_len = password ? strlen(password)+1 : 0;
1633
1634	*output_cli = NULL;
1635
1636	if (password == NULL) {
1637	password = "";
1638	}
1639
1640	nt_status = cli_start_connection(&cli, my_name, dest_host,
1641	dest_ip, port, signing_state, flags, retry);
1642
1643	if (!NT_STATUS_IS_OK(nt_status)) {
1644	return nt_status;
1645	}
1646
1647	nt_status = cli_session_setup(cli, user, password, pw_len, password,
1648	pw_len, domain);
1649	if (!NT_STATUS_IS_OK(nt_status)) {
1650
1651	if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1652	DEBUG(1,("failed session setup with %s\n",
1653	nt_errstr(nt_status)));
1654	cli_shutdown(cli);
1655	return nt_status;
1656	}
1657
1658	nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1659	if (!NT_STATUS_IS_OK(nt_status)) {
1660	DEBUG(1,("anonymous failed session setup with %s\n",
1661	nt_errstr(nt_status)));
1662	cli_shutdown(cli);
1663	return nt_status;
1664	}
1665	}
1666
1667	if (service) {
1668	if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1669	nt_status = cli_nt_error(cli);
1670	DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1671	cli_shutdown(cli);
1672	if (NT_STATUS_IS_OK(nt_status)) {
1673	nt_status = NT_STATUS_UNSUCCESSFUL;
1674	}
1675	return nt_status;
1676	}
1677	}
1678
1679	cli_init_creds(cli, user, domain, password);
1680
1681	*output_cli = cli;
1682	return NT_STATUS_OK;
1683	}
1684
1685	/****************************************************************************
1686	Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1687	****************************************************************************/
1688
1689	BOOL attempt_netbios_session_request(struct cli_state *ppcli, const char srchost, const char *desthost,
1690	struct in_addr *pdest_ip)
1691	{
1692	struct nmb_name calling, called;
1693
1694	make_nmb_name(&calling, srchost, 0x0);
1695
1696	/*
1697	* If the called name is an IP address
1698	* then use *SMBSERVER immediately.
1699	*/
1700
1701	if(is_ipaddress(desthost)) {
1702	make_nmb_name(&called, star_smbserver_name, 0x20);
1703	} else {
1704	make_nmb_name(&called, desthost, 0x20);
1705	}
1706
1707	if (!cli_session_request(*ppcli, &calling, &called)) {
1708	NTSTATUS status;
1709	struct nmb_name smbservername;
1710
1711	make_nmb_name(&smbservername, star_smbserver_name, 0x20);
1712
1713	/*
1714	* If the name wasn't *SMBSERVER then
1715	* try with *SMBSERVER if the first name fails.
1716	*/
1717
1718	if (nmb_name_equal(&called, &smbservername)) {
1719
1720	/*
1721	* The name used was *SMBSERVER, don't bother with another name.
1722	*/
1723
1724	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1725	with error %s.\n", desthost, cli_errstr(*ppcli) ));
1726	return False;
1727	}
1728
1729	/* Try again... */
1730	cli_shutdown(*ppcli);
1731
1732	*ppcli = cli_initialise();
1733	if (!*ppcli) {
1734	/* Out of memory... */
1735	return False;
1736	}
1737
1738	status = cli_connect(*ppcli, desthost, pdest_ip);
1739	if (!NT_STATUS_IS_OK(status) \|\|
1740	!cli_session_request(*ppcli, &calling, &smbservername)) {
1741	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1742	name SMBSERVER with error %s\n", desthost, cli_errstr(ppcli) ));
1743	return False;
1744	}
1745	}
1746
1747	return True;
1748	}
1749
1750
1751
1752
1753
1754	/****************************************************************************
1755	Send an old style tcon.
1756	****************************************************************************/
1757	NTSTATUS cli_raw_tcon(struct cli_state *cli,
1758	const char service, const char pass, const char *dev,
1759	uint16 max_xmit, uint16 tid)
1760	{
1761	char *p;
1762
1763	if (!lp_client_plaintext_auth() && (*pass)) {
1764	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1765	" is disabled\n"));
1766	return NT_STATUS_ACCESS_DENIED;
1767	}
1768
1769	memset(cli->outbuf,'\0',smb_size);
1770	memset(cli->inbuf,'\0',smb_size);
1771
1772	set_message(cli->outbuf, 0, 0, True);
1773	SCVAL(cli->outbuf,smb_com,SMBtcon);
1774	cli_setup_packet(cli);
1775
1776	p = smb_buf(cli->outbuf);
1777	*p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE \| STR_NOALIGN);
1778	*p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE \| STR_NOALIGN);
1779	*p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE \| STR_NOALIGN);
1780
1781	cli_setup_bcc(cli, p);
1782
1783	cli_send_smb(cli);
1784	if (!cli_receive_smb(cli)) {
1785	return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1786	}
1787
1788	if (cli_is_error(cli)) {
1789	return cli_nt_error(cli);
1790	}
1791
1792	*max_xmit = SVAL(cli->inbuf, smb_vwv0);
1793	*tid = SVAL(cli->inbuf, smb_vwv1);
1794
1795	return NT_STATUS_OK;
1796	}
1797
1798	/* Return a cli_state pointing at the IPC$ share for the given server */
1799
1800	struct cli_state get_ipc_connect(char server, struct in_addr *server_ip,
1801	struct user_auth_info *user_info)
1802	{
1803	struct cli_state *cli;
1804	pstring myname;
1805	NTSTATUS nt_status;
1806
1807	get_myname(myname);
1808
1809	nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1810	user_info->username, lp_workgroup(), user_info->password,
1811	CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK, Undefined, NULL);
1812
1813	if (NT_STATUS_IS_OK(nt_status)) {
1814	return cli;
1815	} else if (is_ipaddress(server)) {
1816	/* windows 9* needs a correct NMB name for connections */
1817	fstring remote_name;
1818
1819	if (name_status_find("", 0, 0, server_ip, remote_name)) {
1820	cli = get_ipc_connect(remote_name, server_ip, user_info);
1821	if (cli)
1822	return cli;
1823	}
1824	}
1825	return NULL;
1826	}
1827
1828	/*
1829	* Given the IP address of a master browser on the network, return its
1830	* workgroup and connect to it.
1831	*
1832	* This function is provided to allow additional processing beyond what
1833	* get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1834	* browsers and obtain each master browsers' list of domains (in case the
1835	* first master browser is recently on the network and has not yet
1836	* synchronized with other master browsers and therefore does not yet have the
1837	* entire network browse list)
1838	*/
1839
1840	struct cli_state get_ipc_connect_master_ip(struct ip_service mb_ip, pstring workgroup, struct user_auth_info *user_info)
1841	{
1842	static fstring name;
1843	struct cli_state *cli;
1844	struct in_addr server_ip;
1845
1846	DEBUG(99, ("Looking up name of master browser %s\n",
1847	inet_ntoa(mb_ip->ip)));
1848
1849	/*
1850	* Do a name status query to find out the name of the master browser.
1851	* We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1852	* master browser will not respond to a wildcard query (or, at least,
1853	* an NT4 server acting as the domain master browser will not).
1854	*
1855	* We might be able to use ONLY the query on MSBROWSE, but that's not
1856	* yet been tested with all Windows versions, so until it is, leave
1857	* the original wildcard query as the first choice and fall back to
1858	* MSBROWSE if the wildcard query fails.
1859	*/
1860	if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1861	!name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1862
1863	DEBUG(99, ("Could not retrieve name status for %s\n",
1864	inet_ntoa(mb_ip->ip)));
1865	return NULL;
1866	}
1867
1868	if (!find_master_ip(name, &server_ip)) {
1869	DEBUG(99, ("Could not find master ip for %s\n", name));
1870	return NULL;
1871	}
1872
1873	pstrcpy(workgroup, name);
1874
1875	DEBUG(4, ("found master browser %s, %s\n",
1876	name, inet_ntoa(mb_ip->ip)));
1877
1878	cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1879
1880	return cli;
1881
1882	}
1883
1884	/*
1885	* Return the IP address and workgroup of a master browser on the network, and
1886	* connect to it.
1887	*/
1888
1889	struct cli_state get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info user_info)
1890	{
1891	struct ip_service *ip_list;
1892	struct cli_state *cli;
1893	int i, count;
1894
1895	DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1896
1897	/* Go looking for workgroups by broadcasting on the local network */
1898
1899	if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1900	DEBUG(99, ("No master browsers responded\n"));
1901	return False;
1902	}
1903
1904	for (i = 0; i < count; i++) {
1905	DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1906
1907	cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1908	if (cli)
1909	return(cli);
1910	}
1911
1912	return NULL;
1913	}

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