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source: branches/samba-3.0/source/libsmb/cliconnect.c@ 104

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Last change on this file since 104 was 62, checked in by Paul Smedley, 18 years ago
Update source to 3.0.25c level
File size: 56.1 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 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20	*/
21
22	#include "includes.h"
23
24	extern pstring user_socket_options;
25
26	static const struct {
27	int prot;
28	const char *name;
29	} prots[] = {
30	{PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
31	{PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
32	{PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
33	{PROTOCOL_LANMAN1,"LANMAN1.0"},
34	{PROTOCOL_LANMAN2,"LM1.2X002"},
35	{PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
36	{PROTOCOL_LANMAN2,"LANMAN2.1"},
37	{PROTOCOL_LANMAN2,"Samba"},
38	{PROTOCOL_NT1,"NT LANMAN 1.0"},
39	{PROTOCOL_NT1,"NT LM 0.12"},
40	{-1,NULL}
41	};
42
43	/**
44	* Set the user session key for a connection
45	* @param cli The cli structure to add it too
46	* @param session_key The session key used. (A copy of this is taken for the cli struct)
47	*
48	*/
49
50	static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
51	{
52	cli->user_session_key = data_blob(session_key.data, session_key.length);
53	}
54
55	/****************************************************************************
56	Do an old lanman2 style session setup.
57	****************************************************************************/
58
59	static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
60	const char *user,
61	const char *pass, size_t passlen,
62	const char *workgroup)
63	{
64	DATA_BLOB session_key = data_blob(NULL, 0);
65	DATA_BLOB lm_response = data_blob(NULL, 0);
66	fstring pword;
67	char *p;
68
69	if (passlen > sizeof(pword)-1) {
70	return NT_STATUS_INVALID_PARAMETER;
71	}
72
73	/* LANMAN servers predate NT status codes and Unicode and ignore those
74	smb flags so we must disable the corresponding default capabilities
75	that would otherwise cause the Unicode and NT Status flags to be
76	set (and even returned by the server) */
77
78	cli->capabilities &= ~(CAP_UNICODE \| CAP_STATUS32);
79
80	/* if in share level security then don't send a password now */
81	if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
82	passlen = 0;
83
84	if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
85	/* Encrypted mode needed, and non encrypted password supplied. */
86	lm_response = data_blob(NULL, 24);
87	if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
88	DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
89	return NT_STATUS_ACCESS_DENIED;
90	}
91	} else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
92	/* Encrypted mode needed, and encrypted password supplied. */
93	lm_response = data_blob(pass, passlen);
94	} else if (passlen > 0) {
95	/* Plaintext mode needed, assume plaintext supplied. */
96	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
97	lm_response = data_blob(pass, passlen);
98	}
99
100	/* send a session setup command */
101	memset(cli->outbuf,'\0',smb_size);
102	set_message(cli->outbuf,10, 0, True);
103	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
104	cli_setup_packet(cli);
105
106	SCVAL(cli->outbuf,smb_vwv0,0xFF);
107	SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
108	SSVAL(cli->outbuf,smb_vwv3,2);
109	SSVAL(cli->outbuf,smb_vwv4,1);
110	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
111	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
112
113	p = smb_buf(cli->outbuf);
114	memcpy(p,lm_response.data,lm_response.length);
115	p += lm_response.length;
116	p += clistr_push(cli, p, user, -1, STR_TERMINATE\|STR_UPPER);
117	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
118	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
119	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
120	cli_setup_bcc(cli, p);
121
122	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
123	return cli_nt_error(cli);
124	}
125
126	show_msg(cli->inbuf);
127
128	if (cli_is_error(cli)) {
129	return cli_nt_error(cli);
130	}
131
132	/* use the returned vuid from now on */
133	cli->vuid = SVAL(cli->inbuf,smb_uid);
134	fstrcpy(cli->user_name, user);
135
136	if (session_key.data) {
137	/* Have plaintext orginal */
138	cli_set_session_key(cli, session_key);
139	}
140
141	return NT_STATUS_OK;
142	}
143
144	/****************************************************************************
145	Work out suitable capabilities to offer the server.
146	****************************************************************************/
147
148	static uint32 cli_session_setup_capabilities(struct cli_state *cli)
149	{
150	uint32 capabilities = CAP_NT_SMBS;
151
152	if (!cli->force_dos_errors)
153	capabilities \|= CAP_STATUS32;
154
155	if (cli->use_level_II_oplocks)
156	capabilities \|= CAP_LEVEL_II_OPLOCKS;
157
158	capabilities \|= (cli->capabilities & (CAP_UNICODE\|CAP_LARGE_FILES\|CAP_LARGE_READX\|CAP_LARGE_WRITEX\|CAP_DFS));
159	return capabilities;
160	}
161
162	/****************************************************************************
163	Do a NT1 guest session setup.
164	****************************************************************************/
165
166	static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
167	{
168	char *p;
169	uint32 capabilities = cli_session_setup_capabilities(cli);
170
171	memset(cli->outbuf, '\0', smb_size);
172	set_message(cli->outbuf,13,0,True);
173	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
174	cli_setup_packet(cli);
175
176	SCVAL(cli->outbuf,smb_vwv0,0xFF);
177	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
178	SSVAL(cli->outbuf,smb_vwv3,2);
179	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
180	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
181	SSVAL(cli->outbuf,smb_vwv7,0);
182	SSVAL(cli->outbuf,smb_vwv8,0);
183	SIVAL(cli->outbuf,smb_vwv11,capabilities);
184	p = smb_buf(cli->outbuf);
185	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
186	p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
187	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
188	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
189	cli_setup_bcc(cli, p);
190
191	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
192	return cli_nt_error(cli);
193	}
194
195	show_msg(cli->inbuf);
196
197	if (cli_is_error(cli)) {
198	return cli_nt_error(cli);
199	}
200
201	cli->vuid = SVAL(cli->inbuf,smb_uid);
202
203	p = smb_buf(cli->inbuf);
204	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
205	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
206	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
207
208	if (strstr(cli->server_type, "Samba")) {
209	cli->is_samba = True;
210	}
211
212	fstrcpy(cli->user_name, "");
213
214	return NT_STATUS_OK;
215	}
216
217	/****************************************************************************
218	Do a NT1 plaintext session setup.
219	****************************************************************************/
220
221	static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
222	const char user, const char pass,
223	const char *workgroup)
224	{
225	uint32 capabilities = cli_session_setup_capabilities(cli);
226	char *p;
227	fstring lanman;
228
229	fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
230
231	memset(cli->outbuf, '\0', smb_size);
232	set_message(cli->outbuf,13,0,True);
233	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
234	cli_setup_packet(cli);
235
236	SCVAL(cli->outbuf,smb_vwv0,0xFF);
237	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
238	SSVAL(cli->outbuf,smb_vwv3,2);
239	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
240	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
241	SSVAL(cli->outbuf,smb_vwv8,0);
242	SIVAL(cli->outbuf,smb_vwv11,capabilities);
243	p = smb_buf(cli->outbuf);
244
245	/* check wether to send the ASCII or UNICODE version of the password */
246
247	if ( (capabilities & CAP_UNICODE) == 0 ) {
248	p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
249	SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
250	}
251	else {
252	p += clistr_push(cli, p, pass, -1, STR_UNICODE\|STR_TERMINATE); /* unicode password */
253	SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
254	}
255
256	p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
257	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
258	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
259	p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
260	cli_setup_bcc(cli, p);
261
262	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
263	return cli_nt_error(cli);
264	}
265
266	show_msg(cli->inbuf);
267
268	if (cli_is_error(cli)) {
269	return cli_nt_error(cli);
270	}
271
272	cli->vuid = SVAL(cli->inbuf,smb_uid);
273	p = smb_buf(cli->inbuf);
274	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
275	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
276	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
277	fstrcpy(cli->user_name, user);
278
279	if (strstr(cli->server_type, "Samba")) {
280	cli->is_samba = True;
281	}
282
283	return NT_STATUS_OK;
284	}
285
286	/****************************************************************************
287	do a NT1 NTLM/LM encrypted session setup - for when extended security
288	is not negotiated.
289	@param cli client state to create do session setup on
290	@param user username
291	@param pass either cleartext password (passlen !=24) or LM response.
292	@param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
293	@param workgroup The user's domain.
294	****************************************************************************/
295
296	static NTSTATUS cli_session_setup_nt1(struct cli_state cli, const char user,
297	const char *pass, size_t passlen,
298	const char *ntpass, size_t ntpasslen,
299	const char *workgroup)
300	{
301	uint32 capabilities = cli_session_setup_capabilities(cli);
302	DATA_BLOB lm_response = data_blob(NULL, 0);
303	DATA_BLOB nt_response = data_blob(NULL, 0);
304	DATA_BLOB session_key = data_blob(NULL, 0);
305	NTSTATUS result;
306	char *p;
307
308	if (passlen == 0) {
309	/* do nothing - guest login */
310	} else if (passlen != 24) {
311	if (lp_client_ntlmv2_auth()) {
312	DATA_BLOB server_chal;
313	DATA_BLOB names_blob;
314	server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
315
316	/* note that the 'workgroup' here is a best guess - we don't know
317	the server's domain at this point. The 'server name' is also
318	dodgy...
319	*/
320	names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
321
322	if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
323	&names_blob,
324	&lm_response, &nt_response, &session_key)) {
325	data_blob_free(&names_blob);
326	data_blob_free(&server_chal);
327	return NT_STATUS_ACCESS_DENIED;
328	}
329	data_blob_free(&names_blob);
330	data_blob_free(&server_chal);
331
332	} else {
333	uchar nt_hash[16];
334	E_md4hash(pass, nt_hash);
335
336	#ifdef LANMAN_ONLY
337	nt_response = data_blob(NULL, 0);
338	#else
339	nt_response = data_blob(NULL, 24);
340	SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
341	#endif
342	/* non encrypted password supplied. Ignore ntpass. */
343	if (lp_client_lanman_auth()) {
344	lm_response = data_blob(NULL, 24);
345	if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
346	/* Oops, the LM response is invalid, just put
347	the NT response there instead */
348	data_blob_free(&lm_response);
349	lm_response = data_blob(nt_response.data, nt_response.length);
350	}
351	} else {
352	/* LM disabled, place NT# in LM field instead */
353	lm_response = data_blob(nt_response.data, nt_response.length);
354	}
355
356	session_key = data_blob(NULL, 16);
357	#ifdef LANMAN_ONLY
358	E_deshash(pass, session_key.data);
359	memset(&session_key.data[8], '\0', 8);
360	#else
361	SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
362	#endif
363	}
364	#ifdef LANMAN_ONLY
365	cli_simple_set_signing(cli, session_key, lm_response);
366	#else
367	cli_simple_set_signing(cli, session_key, nt_response);
368	#endif
369	} else {
370	/* pre-encrypted password supplied. Only used for
371	security=server, can't do
372	signing because we don't have original key */
373
374	lm_response = data_blob(pass, passlen);
375	nt_response = data_blob(ntpass, ntpasslen);
376	}
377
378	/* send a session setup command */
379	memset(cli->outbuf,'\0',smb_size);
380
381	set_message(cli->outbuf,13,0,True);
382	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
383	cli_setup_packet(cli);
384
385	SCVAL(cli->outbuf,smb_vwv0,0xFF);
386	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
387	SSVAL(cli->outbuf,smb_vwv3,2);
388	SSVAL(cli->outbuf,smb_vwv4,cli->pid);
389	SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
390	SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
391	SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
392	SIVAL(cli->outbuf,smb_vwv11,capabilities);
393	p = smb_buf(cli->outbuf);
394	if (lm_response.length) {
395	memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
396	}
397	if (nt_response.length) {
398	memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
399	}
400	p += clistr_push(cli, p, user, -1, STR_TERMINATE);
401
402	/* Upper case here might help some NTLMv2 implementations */
403	p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE\|STR_UPPER);
404	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
405	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
406	cli_setup_bcc(cli, p);
407
408	if (!cli_send_smb(cli) \|\| !cli_receive_smb(cli)) {
409	result = cli_nt_error(cli);
410	goto end;
411	}
412
413	/* show_msg(cli->inbuf); */
414
415	if (cli_is_error(cli)) {
416	result = cli_nt_error(cli);
417	goto end;
418	}
419
420	/* use the returned vuid from now on */
421	cli->vuid = SVAL(cli->inbuf,smb_uid);
422
423	p = smb_buf(cli->inbuf);
424	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
425	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
426	p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
427
428	if (strstr(cli->server_type, "Samba")) {
429	cli->is_samba = True;
430	}
431
432	fstrcpy(cli->user_name, user);
433
434	if (session_key.data) {
435	/* Have plaintext orginal */
436	cli_set_session_key(cli, session_key);
437	}
438
439	result = NT_STATUS_OK;
440	end:
441	data_blob_free(&lm_response);
442	data_blob_free(&nt_response);
443	data_blob_free(&session_key);
444	return result;
445	}
446
447	/****************************************************************************
448	Send a extended security session setup blob
449	****************************************************************************/
450
451	static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
452	{
453	uint32 capabilities = cli_session_setup_capabilities(cli);
454	char *p;
455
456	capabilities \|= CAP_EXTENDED_SECURITY;
457
458	/* send a session setup command */
459	memset(cli->outbuf,'\0',smb_size);
460
461	set_message(cli->outbuf,12,0,True);
462	SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
463
464	cli_setup_packet(cli);
465
466	SCVAL(cli->outbuf,smb_vwv0,0xFF);
467	SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
468	SSVAL(cli->outbuf,smb_vwv3,2);
469	SSVAL(cli->outbuf,smb_vwv4,1);
470	SIVAL(cli->outbuf,smb_vwv5,0);
471	SSVAL(cli->outbuf,smb_vwv7,blob.length);
472	SIVAL(cli->outbuf,smb_vwv10,capabilities);
473	p = smb_buf(cli->outbuf);
474	memcpy(p, blob.data, blob.length);
475	p += blob.length;
476	p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
477	p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
478	cli_setup_bcc(cli, p);
479	return cli_send_smb(cli);
480	}
481
482	/****************************************************************************
483	Send a extended security session setup blob, returning a reply blob.
484	****************************************************************************/
485
486	static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
487	{
488	DATA_BLOB blob2 = data_blob(NULL, 0);
489	char *p;
490	size_t len;
491
492	if (!cli_receive_smb(cli))
493	return blob2;
494
495	show_msg(cli->inbuf);
496
497	if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
498	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
499	return blob2;
500	}
501
502	/* use the returned vuid from now on */
503	cli->vuid = SVAL(cli->inbuf,smb_uid);
504
505	p = smb_buf(cli->inbuf);
506
507	blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
508
509	p += blob2.length;
510	p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
511
512	/* w2k with kerberos doesn't properly null terminate this field */
513	len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
514	p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
515
516	return blob2;
517	}
518
519	#ifdef HAVE_KRB5
520	/****************************************************************************
521	Send a extended security session setup blob, returning a reply blob.
522	****************************************************************************/
523
524	/* The following is calculated from :
525	* (smb_size-4) = 35
526	* (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
527	* (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
528	* end of packet.
529	*/
530
531	#define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
532
533	static BOOL cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob, DATA_BLOB session_key_krb5)
534	{
535	int32 remaining = blob.length;
536	int32 cur = 0;
537	DATA_BLOB send_blob = data_blob(NULL, 0);
538	int32 max_blob_size = 0;
539	DATA_BLOB receive_blob = data_blob(NULL, 0);
540
541	if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
542	DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
543	"(was %u, need minimum %u)\n",
544	(unsigned int)cli->max_xmit,
545	BASE_SESSSETUP_BLOB_PACKET_SIZE));
546	cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
547	return False;
548	}
549
550	max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
551
552	while ( remaining > 0) {
553	if (remaining >= max_blob_size) {
554	send_blob.length = max_blob_size;
555	remaining -= max_blob_size;
556	} else {
557	DATA_BLOB null_blob = data_blob(NULL, 0);
558
559	send_blob.length = remaining;
560	remaining = 0;
561
562	/* This is the last packet in the sequence - turn signing on. */
563	cli_simple_set_signing(cli, session_key_krb5, null_blob);
564	}
565
566	send_blob.data = &blob.data[cur];
567	cur += send_blob.length;
568
569	DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
570	(unsigned int)remaining,
571	(unsigned int)send_blob.length,
572	(unsigned int)cur ));
573
574	if (!cli_session_setup_blob_send(cli, send_blob)) {
575	DEBUG(0, ("cli_session_setup_blob: send failed\n"));
576	return False;
577	}
578
579	receive_blob = cli_session_setup_blob_receive(cli);
580	data_blob_free(&receive_blob);
581
582	if (cli_is_error(cli) &&
583	!NT_STATUS_EQUAL( cli_get_nt_error(cli),
584	NT_STATUS_MORE_PROCESSING_REQUIRED)) {
585	DEBUG(0, ("cli_session_setup_blob: recieve failed (%s)\n",
586	nt_errstr(cli_get_nt_error(cli)) ));
587	cli->vuid = 0;
588	return False;
589	}
590	}
591
592	return True;
593	}
594
595	/****************************************************************************
596	Use in-memory credentials cache
597	****************************************************************************/
598
599	static void use_in_memory_ccache(void) {
600	setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
601	}
602
603	/****************************************************************************
604	Do a spnego/kerberos encrypted session setup.
605	****************************************************************************/
606
607	static ADS_STATUS cli_session_setup_kerberos(struct cli_state cli, const char principal, const char *workgroup)
608	{
609	DATA_BLOB negTokenTarg;
610	DATA_BLOB session_key_krb5;
611	int rc;
612
613	DEBUG(2,("Doing kerberos session setup\n"));
614
615	/* generate the encapsulated kerberos5 ticket */
616	rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
617
618	if (rc) {
619	DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
620	error_message(rc)));
621	return ADS_ERROR_KRB5(rc);
622	}
623
624	#if 0
625	file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
626	#endif
627
628	if (!cli_session_setup_blob(cli, negTokenTarg, session_key_krb5)) {
629	data_blob_free(&negTokenTarg);
630	data_blob_free(&session_key_krb5);
631	ADS_ERROR_NT(cli_nt_error(cli));
632	}
633
634	cli_set_session_key(cli, session_key_krb5);
635
636	data_blob_free(&negTokenTarg);
637	data_blob_free(&session_key_krb5);
638
639	if (cli_is_error(cli)) {
640	if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
641	return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
642	}
643	}
644	return ADS_ERROR_NT(cli_nt_error(cli));
645	}
646	#endif /* HAVE_KRB5 */
647
648
649	/****************************************************************************
650	Do a spnego/NTLMSSP encrypted session setup.
651	****************************************************************************/
652
653	static NTSTATUS cli_session_setup_ntlmssp(struct cli_state cli, const char user,
654	const char pass, const char domain)
655	{
656	struct ntlmssp_state *ntlmssp_state;
657	NTSTATUS nt_status;
658	int turn = 1;
659	DATA_BLOB msg1;
660	DATA_BLOB blob = data_blob(NULL, 0);
661	DATA_BLOB blob_in = data_blob(NULL, 0);
662	DATA_BLOB blob_out = data_blob(NULL, 0);
663
664	cli_temp_set_signing(cli);
665
666	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
667	return nt_status;
668	}
669	ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
670
671	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
672	return nt_status;
673	}
674	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
675	return nt_status;
676	}
677	if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
678	return nt_status;
679	}
680
681	do {
682	nt_status = ntlmssp_update(ntlmssp_state,
683	blob_in, &blob_out);
684	data_blob_free(&blob_in);
685	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) \|\| NT_STATUS_IS_OK(nt_status)) {
686	if (turn == 1) {
687	/* and wrap it in a SPNEGO wrapper */
688	msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
689	} else {
690	/* wrap it in SPNEGO */
691	msg1 = spnego_gen_auth(blob_out);
692	}
693
694	/* now send that blob on its way */
695	if (!cli_session_setup_blob_send(cli, msg1)) {
696	DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
697	nt_status = NT_STATUS_UNSUCCESSFUL;
698	} else {
699	blob = cli_session_setup_blob_receive(cli);
700
701	nt_status = cli_nt_error(cli);
702	if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
703	if (cli->smb_rw_error == READ_BAD_SIG) {
704	nt_status = NT_STATUS_ACCESS_DENIED;
705	} else {
706	nt_status = NT_STATUS_UNSUCCESSFUL;
707	}
708	}
709	}
710	data_blob_free(&msg1);
711	}
712
713	if (!blob.length) {
714	if (NT_STATUS_IS_OK(nt_status)) {
715	nt_status = NT_STATUS_UNSUCCESSFUL;
716	}
717	} else if ((turn == 1) &&
718	NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
719	DATA_BLOB tmp_blob = data_blob(NULL, 0);
720	/* the server might give us back two challenges */
721	if (!spnego_parse_challenge(blob, &blob_in,
722	&tmp_blob)) {
723	DEBUG(3,("Failed to parse challenges\n"));
724	nt_status = NT_STATUS_INVALID_PARAMETER;
725	}
726	data_blob_free(&tmp_blob);
727	} else {
728	if (!spnego_parse_auth_response(blob, nt_status,
729	&blob_in)) {
730	DEBUG(3,("Failed to parse auth response\n"));
731	if (NT_STATUS_IS_OK(nt_status)
732	\|\| NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
733	nt_status = NT_STATUS_INVALID_PARAMETER;
734	}
735	}
736	data_blob_free(&blob);
737	data_blob_free(&blob_out);
738	turn++;
739	} while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
740
741	data_blob_free(&blob_in);
742
743	if (NT_STATUS_IS_OK(nt_status)) {
744
745	DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
746	ntlmssp_state->session_key.length);
747	DATA_BLOB null_blob = data_blob(NULL, 0);
748	BOOL res;
749
750	fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
751	cli_set_session_key(cli, ntlmssp_state->session_key);
752
753	res = cli_simple_set_signing(cli, key, null_blob);
754
755	data_blob_free(&key);
756
757	if (res) {
758
759	/* 'resign' the last message, so we get the right sequence numbers
760	for checking the first reply from the server */
761	cli_calculate_sign_mac(cli);
762
763	if (!cli_check_sign_mac(cli)) {
764	nt_status = NT_STATUS_ACCESS_DENIED;
765	}
766	}
767	}
768
769	/* we have a reference conter on ntlmssp_state, if we are signing
770	then the state will be kept by the signing engine */
771
772	ntlmssp_end(&ntlmssp_state);
773
774	if (!NT_STATUS_IS_OK(nt_status)) {
775	cli->vuid = 0;
776	}
777	return nt_status;
778	}
779
780	/****************************************************************************
781	Do a spnego encrypted session setup.
782	****************************************************************************/
783
784	ADS_STATUS cli_session_setup_spnego(struct cli_state cli, const char user,
785	const char pass, const char domain)
786	{
787	char *principal;
788	char *OIDs[ASN1_MAX_OIDS];
789	int i;
790	BOOL got_kerberos_mechanism = False;
791	DATA_BLOB blob;
792
793	DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
794
795	/* the server might not even do spnego */
796	if (cli->secblob.length <= 16) {
797	DEBUG(3,("server didn't supply a full spnego negprot\n"));
798	goto ntlmssp;
799	}
800
801	#if 0
802	file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
803	#endif
804
805	/* there is 16 bytes of GUID before the real spnego packet starts */
806	blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
807
808	/* the server sent us the first part of the SPNEGO exchange in the negprot
809	reply */
810	if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
811	data_blob_free(&blob);
812	return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
813	}
814	data_blob_free(&blob);
815
816	/* make sure the server understands kerberos */
817	for (i=0;OIDs[i];i++) {
818	DEBUG(3,("got OID=%s\n", OIDs[i]));
819	if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 \|\|
820	strcmp(OIDs[i], OID_KERBEROS5) == 0) {
821	got_kerberos_mechanism = True;
822	}
823	free(OIDs[i]);
824	}
825
826	DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
827
828	if (got_kerberos_mechanism && (principal == NULL)) {
829	/*
830	* It is WRONG to depend on the principal sent in the negprot
831	* reply, but right now we do it. So for safety (don't
832	* segfault later) disable Kerberos when no principal was
833	* sent. -- VL
834	*/
835	DEBUG(1, ("Kerberos mech was offered, but no principal was "
836	"sent, disabling Kerberos\n"));
837	cli->use_kerberos = False;
838	}
839
840	fstrcpy(cli->user_name, user);
841
842	#ifdef HAVE_KRB5
843	/* If password is set we reauthenticate to kerberos server
844	* and do not store results */
845
846	if (got_kerberos_mechanism && cli->use_kerberos) {
847	ADS_STATUS rc;
848
849	if (pass && *pass) {
850	int ret;
851
852	use_in_memory_ccache();
853	ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
854
855	if (ret){
856	SAFE_FREE(principal);
857	DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
858	if (cli->fallback_after_kerberos)
859	goto ntlmssp;
860	return ADS_ERROR_KRB5(ret);
861	}
862	}
863
864	rc = cli_session_setup_kerberos(cli, principal, domain);
865	if (ADS_ERR_OK(rc) \|\| !cli->fallback_after_kerberos) {
866	SAFE_FREE(principal);
867	return rc;
868	}
869	}
870	#endif
871
872	SAFE_FREE(principal);
873
874	ntlmssp:
875
876	return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
877	}
878
879	/****************************************************************************
880	Send a session setup. The username and workgroup is in UNIX character
881	format and must be converted to DOS codepage format before sending. If the
882	password is in plaintext, the same should be done.
883	****************************************************************************/
884
885	NTSTATUS cli_session_setup(struct cli_state *cli,
886	const char *user,
887	const char *pass, int passlen,
888	const char *ntpass, int ntpasslen,
889	const char *workgroup)
890	{
891	char *p;
892	fstring user2;
893
894	/* allow for workgroups as part of the username */
895	fstrcpy(user2, user);
896	if ((p=strchr_m(user2,'\\')) \|\| (p=strchr_m(user2,'/')) \|\|
897	(p=strchr_m(user2,*lp_winbind_separator()))) {
898	*p = 0;
899	user = p+1;
900	workgroup = user2;
901	}
902
903	if (cli->protocol < PROTOCOL_LANMAN1) {
904	return NT_STATUS_OK;
905	}
906
907	/* now work out what sort of session setup we are going to
908	do. I have split this into separate functions to make the
909	flow a bit easier to understand (tridge) */
910
911	/* if its an older server then we have to use the older request format */
912
913	if (cli->protocol < PROTOCOL_NT1) {
914	if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
915	DEBUG(1, ("Server requested LM password but 'client lanman auth'"
916	" is disabled\n"));
917	return NT_STATUS_ACCESS_DENIED;
918	}
919
920	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
921	!lp_client_plaintext_auth() && (*pass)) {
922	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
923	" is disabled\n"));
924	return NT_STATUS_ACCESS_DENIED;
925	}
926
927	return cli_session_setup_lanman2(cli, user, pass, passlen,
928	workgroup);
929	}
930
931	/* if no user is supplied then we have to do an anonymous connection.
932	passwords are ignored */
933
934	if (!user \|\| !*user)
935	return cli_session_setup_guest(cli);
936
937	/* if the server is share level then send a plaintext null
938	password at this point. The password is sent in the tree
939	connect */
940
941	if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
942	return cli_session_setup_plaintext(cli, user, "", workgroup);
943
944	/* if the server doesn't support encryption then we have to use
945	plaintext. The second password is ignored */
946
947	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
948	if (!lp_client_plaintext_auth() && (*pass)) {
949	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
950	" is disabled\n"));
951	return NT_STATUS_ACCESS_DENIED;
952	}
953	return cli_session_setup_plaintext(cli, user, pass, workgroup);
954	}
955
956	/* if the server supports extended security then use SPNEGO */
957
958	if (cli->capabilities & CAP_EXTENDED_SECURITY) {
959	ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
960	if (!ADS_ERR_OK(status)) {
961	DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
962	return ads_ntstatus(status);
963	}
964	} else {
965	NTSTATUS status;
966
967	/* otherwise do a NT1 style session setup */
968	status = cli_session_setup_nt1(cli, user, pass, passlen,
969	ntpass, ntpasslen, workgroup);
970	if (!NT_STATUS_IS_OK(status)) {
971	DEBUG(3,("cli_session_setup: NT1 session setup "
972	"failed: %s\n", nt_errstr(status)));
973	return status;
974	}
975	}
976
977	if (strstr(cli->server_type, "Samba")) {
978	cli->is_samba = True;
979	}
980
981	return NT_STATUS_OK;
982
983	}
984
985	/****************************************************************************
986	Send a uloggoff.
987	*****************************************************************************/
988
989	BOOL cli_ulogoff(struct cli_state *cli)
990	{
991	memset(cli->outbuf,'\0',smb_size);
992	set_message(cli->outbuf,2,0,True);
993	SCVAL(cli->outbuf,smb_com,SMBulogoffX);
994	cli_setup_packet(cli);
995	SSVAL(cli->outbuf,smb_vwv0,0xFF);
996	SSVAL(cli->outbuf,smb_vwv2,0); /* no additional info */
997
998	cli_send_smb(cli);
999	if (!cli_receive_smb(cli))
1000	return False;
1001
1002	if (cli_is_error(cli)) {
1003	return False;
1004	}
1005
1006	cli->cnum = -1;
1007	return True;
1008	}
1009
1010	/****************************************************************************
1011	Send a tconX.
1012	****************************************************************************/
1013
1014	BOOL cli_send_tconX(struct cli_state *cli,
1015	const char share, const char dev, const char *pass, int passlen)
1016	{
1017	fstring fullshare, pword;
1018	char *p;
1019	memset(cli->outbuf,'\0',smb_size);
1020	memset(cli->inbuf,'\0',smb_size);
1021
1022	fstrcpy(cli->share, share);
1023
1024	/* in user level security don't send a password now */
1025	if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1026	passlen = 1;
1027	pass = "";
1028	} else if (!pass) {
1029	DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1030	return False;
1031	}
1032
1033	if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1034	*pass && passlen != 24) {
1035	if (!lp_client_lanman_auth()) {
1036	DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
1037	" is disabled\n"));
1038	return False;
1039	}
1040
1041	/*
1042	* Non-encrypted passwords - convert to DOS codepage before encryption.
1043	*/
1044	passlen = 24;
1045	SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1046	} else {
1047	if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL\|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1048	if (!lp_client_plaintext_auth() && (*pass)) {
1049	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1050	" is disabled\n"));
1051	return False;
1052	}
1053
1054	/*
1055	* Non-encrypted passwords - convert to DOS codepage before using.
1056	*/
1057	passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1058
1059	} else {
1060	if (passlen) {
1061	memcpy(pword, pass, passlen);
1062	}
1063	}
1064	}
1065
1066	slprintf(fullshare, sizeof(fullshare)-1,
1067	"\\\\%s\\%s", cli->desthost, share);
1068
1069	set_message(cli->outbuf,4, 0, True);
1070	SCVAL(cli->outbuf,smb_com,SMBtconX);
1071	cli_setup_packet(cli);
1072
1073	SSVAL(cli->outbuf,smb_vwv0,0xFF);
1074	SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1075	SSVAL(cli->outbuf,smb_vwv3,passlen);
1076
1077	p = smb_buf(cli->outbuf);
1078	if (passlen) {
1079	memcpy(p,pword,passlen);
1080	}
1081	p += passlen;
1082	p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE \|STR_UPPER);
1083	p += clistr_push(cli, p, dev, -1, STR_TERMINATE \|STR_UPPER \| STR_ASCII);
1084
1085	cli_setup_bcc(cli, p);
1086
1087	cli_send_smb(cli);
1088	if (!cli_receive_smb(cli))
1089	return False;
1090
1091	if (cli_is_error(cli))
1092	return False;
1093
1094	clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE\|STR_ASCII);
1095
1096	if (cli->protocol >= PROTOCOL_NT1 &&
1097	smb_buflen(cli->inbuf) == 3) {
1098	/* almost certainly win95 - enable bug fixes */
1099	cli->win95 = True;
1100	}
1101
1102	/* Make sure that we have the optional support 16-bit field. WCT > 2 */
1103	/* Avoids issues when connecting to Win9x boxes sharing files */
1104
1105	cli->dfsroot = False;
1106	if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1107	cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1108
1109	cli->cnum = SVAL(cli->inbuf,smb_tid);
1110	return True;
1111	}
1112
1113	/****************************************************************************
1114	Send a tree disconnect.
1115	****************************************************************************/
1116
1117	BOOL cli_tdis(struct cli_state *cli)
1118	{
1119	memset(cli->outbuf,'\0',smb_size);
1120	set_message(cli->outbuf,0,0,True);
1121	SCVAL(cli->outbuf,smb_com,SMBtdis);
1122	SSVAL(cli->outbuf,smb_tid,cli->cnum);
1123	cli_setup_packet(cli);
1124
1125	cli_send_smb(cli);
1126	if (!cli_receive_smb(cli))
1127	return False;
1128
1129	if (cli_is_error(cli)) {
1130	return False;
1131	}
1132
1133	cli->cnum = -1;
1134	return True;
1135	}
1136
1137	/****************************************************************************
1138	Send a negprot command.
1139	****************************************************************************/
1140
1141	void cli_negprot_send(struct cli_state *cli)
1142	{
1143	char *p;
1144	int numprots;
1145
1146	if (cli->protocol < PROTOCOL_NT1)
1147	cli->use_spnego = False;
1148
1149	memset(cli->outbuf,'\0',smb_size);
1150
1151	/* setup the protocol strings */
1152	set_message(cli->outbuf,0,0,True);
1153
1154	p = smb_buf(cli->outbuf);
1155	for (numprots=0;
1156	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1157	numprots++) {
1158	*p++ = 2;
1159	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1160	}
1161
1162	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1163	cli_setup_bcc(cli, p);
1164	cli_setup_packet(cli);
1165
1166	SCVAL(smb_buf(cli->outbuf),0,2);
1167
1168	cli_send_smb(cli);
1169	}
1170
1171	/****************************************************************************
1172	Send a negprot command.
1173	****************************************************************************/
1174
1175	BOOL cli_negprot(struct cli_state *cli)
1176	{
1177	char *p;
1178	int numprots;
1179	int plength;
1180
1181	if (cli->protocol < PROTOCOL_NT1)
1182	cli->use_spnego = False;
1183
1184	memset(cli->outbuf,'\0',smb_size);
1185
1186	/* setup the protocol strings */
1187	for (plength=0,numprots=0;
1188	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1189	numprots++)
1190	plength += strlen(prots[numprots].name)+2;
1191
1192	set_message(cli->outbuf,0,plength,True);
1193
1194	p = smb_buf(cli->outbuf);
1195	for (numprots=0;
1196	prots[numprots].name && prots[numprots].prot<=cli->protocol;
1197	numprots++) {
1198	*p++ = 2;
1199	p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1200	}
1201
1202	SCVAL(cli->outbuf,smb_com,SMBnegprot);
1203	cli_setup_packet(cli);
1204
1205	SCVAL(smb_buf(cli->outbuf),0,2);
1206
1207	cli_send_smb(cli);
1208	if (!cli_receive_smb(cli))
1209	return False;
1210
1211	show_msg(cli->inbuf);
1212
1213	if (cli_is_error(cli) \|\|
1214	((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1215	return(False);
1216	}
1217
1218	cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1219
1220	if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1221	DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1222	return False;
1223	}
1224
1225	if (cli->protocol >= PROTOCOL_NT1) {
1226	struct timespec ts;
1227	/* NT protocol */
1228	cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1229	cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1230	cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1231	cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1232	cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1233	cli->serverzone *= 60;
1234	/* this time arrives in real GMT */
1235	ts = interpret_long_date(cli->inbuf+smb_vwv11+1);
1236	cli->servertime = ts.tv_sec;
1237	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1238	cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1239	if (cli->capabilities & CAP_RAW_MODE) {
1240	cli->readbraw_supported = True;
1241	cli->writebraw_supported = True;
1242	}
1243	/* work out if they sent us a workgroup */
1244	if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1245	smb_buflen(cli->inbuf) > 8) {
1246	clistr_pull(cli, cli->server_domain,
1247	smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1248	smb_buflen(cli->inbuf)-8, STR_UNICODE\|STR_NOALIGN);
1249	}
1250
1251	/*
1252	* As signing is slow we only turn it on if either the client or
1253	* the server require it. JRA.
1254	*/
1255
1256	if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1257	/* Fail if server says signing is mandatory and we don't want to support it. */
1258	if (!cli->sign_info.allow_smb_signing) {
1259	DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1260	return False;
1261	}
1262	cli->sign_info.negotiated_smb_signing = True;
1263	cli->sign_info.mandatory_signing = True;
1264	} else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1265	/* Fail if client says signing is mandatory and the server doesn't support it. */
1266	if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1267	DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1268	return False;
1269	}
1270	cli->sign_info.negotiated_smb_signing = True;
1271	cli->sign_info.mandatory_signing = True;
1272	} else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1273	cli->sign_info.negotiated_smb_signing = True;
1274	}
1275
1276	if (cli->capabilities & (CAP_LARGE_READX\|CAP_LARGE_WRITEX)) {
1277	SAFE_FREE(cli->outbuf);
1278	SAFE_FREE(cli->inbuf);
1279	cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1280	cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1281	cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1282	}
1283
1284	} else if (cli->protocol >= PROTOCOL_LANMAN1) {
1285	cli->use_spnego = False;
1286	cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1287	cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1288	cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1289	cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1290	cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1291	cli->serverzone *= 60;
1292	/* this time is converted to GMT by make_unix_date */
1293	cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1294	cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1295	cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1296	cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1297	} else {
1298	/* the old core protocol */
1299	cli->use_spnego = False;
1300	cli->sec_mode = 0;
1301	cli->serverzone = get_time_zone(time(NULL));
1302	}
1303
1304	cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1305
1306	/* a way to force ascii SMB */
1307	if (getenv("CLI_FORCE_ASCII"))
1308	cli->capabilities &= ~CAP_UNICODE;
1309
1310	return True;
1311	}
1312
1313	/****************************************************************************
1314	Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1315	****************************************************************************/
1316
1317	BOOL cli_session_request(struct cli_state *cli,
1318	struct nmb_name calling, struct nmb_name called)
1319	{
1320	char *p;
1321	int len = 4;
1322
1323	memcpy(&(cli->calling), calling, sizeof(*calling));
1324	memcpy(&(cli->called ), called , sizeof(*called ));
1325
1326	/* put in the destination name */
1327	p = cli->outbuf+len;
1328	name_mangle(cli->called .name, p, cli->called .name_type);
1329	len += name_len(p);
1330
1331	/* and my name */
1332	p = cli->outbuf+len;
1333	name_mangle(cli->calling.name, p, cli->calling.name_type);
1334	len += name_len(p);
1335
1336	/* 445 doesn't have session request */
1337	if (cli->port == 445)
1338	return True;
1339
1340	/* send a session request (RFC 1002) */
1341	/* setup the packet length
1342	* Remove four bytes from the length count, since the length
1343	* field in the NBT Session Service header counts the number
1344	* of bytes which follow. The cli_send_smb() function knows
1345	* about this and accounts for those four bytes.
1346	* CRH.
1347	*/
1348	len -= 4;
1349	_smb_setlen(cli->outbuf,len);
1350	SCVAL(cli->outbuf,0,0x81);
1351
1352	cli_send_smb(cli);
1353	DEBUG(5,("Sent session request\n"));
1354
1355	if (!cli_receive_smb(cli))
1356	return False;
1357
1358	if (CVAL(cli->inbuf,0) == 0x84) {
1359	/* C. Hoch 9/14/95 Start */
1360	/* For information, here is the response structure.
1361	* We do the byte-twiddling to for portability.
1362	struct RetargetResponse{
1363	unsigned char type;
1364	unsigned char flags;
1365	int16 length;
1366	int32 ip_addr;
1367	int16 port;
1368	};
1369	*/
1370	int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1371	/* SESSION RETARGET */
1372	putip((char *)&cli->dest_ip,cli->inbuf+4);
1373
1374	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1375	if (cli->fd == -1)
1376	return False;
1377
1378	DEBUG(3,("Retargeted\n"));
1379
1380	set_socket_options(cli->fd,user_socket_options);
1381
1382	/* Try again */
1383	{
1384	static int depth;
1385	BOOL ret;
1386	if (depth > 4) {
1387	DEBUG(0,("Retarget recursion - failing\n"));
1388	return False;
1389	}
1390	depth++;
1391	ret = cli_session_request(cli, calling, called);
1392	depth--;
1393	return ret;
1394	}
1395	} /* C. Hoch 9/14/95 End */
1396
1397	if (CVAL(cli->inbuf,0) != 0x82) {
1398	/* This is the wrong place to put the error... JRA. */
1399	cli->rap_error = CVAL(cli->inbuf,4);
1400	return False;
1401	}
1402	return(True);
1403	}
1404
1405	/****************************************************************************
1406	Open the client sockets.
1407	****************************************************************************/
1408
1409	NTSTATUS cli_connect(struct cli_state cli, const char host, struct in_addr *ip)
1410	{
1411	int name_type = 0x20;
1412	char *p;
1413
1414	/* reasonable default hostname */
1415	if (!host) host = "*SMBSERVER";
1416
1417	fstrcpy(cli->desthost, host);
1418
1419	/* allow hostnames of the form NAME#xx and do a netbios lookup */
1420	if ((p = strchr(cli->desthost, '#'))) {
1421	name_type = strtol(p+1, NULL, 16);
1422	*p = 0;
1423	}
1424
1425	if (!ip \|\| is_zero_ip(*ip)) {
1426	if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1427	return NT_STATUS_BAD_NETWORK_NAME;
1428	}
1429	if (ip) *ip = cli->dest_ip;
1430	} else {
1431	cli->dest_ip = *ip;
1432	}
1433
1434	if (getenv("LIBSMB_PROG")) {
1435	cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1436	} else {
1437	/* try 445 first, then 139 */
1438	int port = cli->port?cli->port:445;
1439	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1440	port, cli->timeout);
1441	if (cli->fd == -1 && cli->port == 0) {
1442	port = 139;
1443	cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1444	port, cli->timeout);
1445	}
1446	if (cli->fd != -1)
1447	cli->port = port;
1448	}
1449	if (cli->fd == -1) {
1450	DEBUG(1,("Error connecting to %s (%s)\n",
1451	ip?inet_ntoa(*ip):host,strerror(errno)));
1452	return map_nt_error_from_unix(errno);
1453	}
1454
1455	set_socket_options(cli->fd,user_socket_options);
1456
1457	return NT_STATUS_OK;
1458	}
1459
1460	/**
1461	establishes a connection to after the negprot.
1462	@param output_cli A fully initialised cli structure, non-null only on success
1463	@param dest_host The netbios name of the remote host
1464	@param dest_ip (optional) The the destination IP, NULL for name based lookup
1465	@param port (optional) The destination port (0 for default)
1466	@param retry BOOL. Did this connection fail with a retryable error ?
1467
1468	*/
1469	NTSTATUS cli_start_connection(struct cli_state **output_cli,
1470	const char *my_name,
1471	const char *dest_host,
1472	struct in_addr *dest_ip, int port,
1473	int signing_state, int flags,
1474	BOOL *retry)
1475	{
1476	NTSTATUS nt_status;
1477	struct nmb_name calling;
1478	struct nmb_name called;
1479	struct cli_state *cli;
1480	struct in_addr ip;
1481
1482	if (retry)
1483	*retry = False;
1484
1485	if (!my_name)
1486	my_name = global_myname();
1487
1488	if (!(cli = cli_initialise())) {
1489	return NT_STATUS_NO_MEMORY;
1490	}
1491
1492	make_nmb_name(&calling, my_name, 0x0);
1493	make_nmb_name(&called , dest_host, 0x20);
1494
1495	if (cli_set_port(cli, port) != port) {
1496	cli_shutdown(cli);
1497	return NT_STATUS_UNSUCCESSFUL;
1498	}
1499
1500	cli_set_timeout(cli, 10000); /* 10 seconds. */
1501
1502	if (dest_ip)
1503	ip = *dest_ip;
1504	else
1505	ZERO_STRUCT(ip);
1506
1507	again:
1508
1509	DEBUG(3,("Connecting to host=%s\n", dest_host));
1510
1511	nt_status = cli_connect(cli, dest_host, &ip);
1512	if (!NT_STATUS_IS_OK(nt_status)) {
1513	DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1514	nmb_namestr(&called), inet_ntoa(ip), nt_errstr(nt_status) ));
1515	cli_shutdown(cli);
1516	return nt_status;
1517	}
1518
1519	if (retry)
1520	*retry = True;
1521
1522	if (!cli_session_request(cli, &calling, &called)) {
1523	char *p;
1524	DEBUG(1,("session request to %s failed (%s)\n",
1525	called.name, cli_errstr(cli)));
1526	if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1527	*p = 0;
1528	goto again;
1529	}
1530	if (strcmp(called.name, "*SMBSERVER")) {
1531	make_nmb_name(&called , "*SMBSERVER", 0x20);
1532	goto again;
1533	}
1534	return NT_STATUS_BAD_NETWORK_NAME;
1535	}
1536
1537	cli_setup_signing_state(cli, signing_state);
1538
1539	if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1540	cli->use_spnego = False;
1541	else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1542	cli->use_kerberos = True;
1543
1544	if (!cli_negprot(cli)) {
1545	DEBUG(1,("failed negprot\n"));
1546	nt_status = cli_nt_error(cli);
1547	if (NT_STATUS_IS_OK(nt_status)) {
1548	nt_status = NT_STATUS_UNSUCCESSFUL;
1549	}
1550	cli_shutdown(cli);
1551	return nt_status;
1552	}
1553
1554	*output_cli = cli;
1555	return NT_STATUS_OK;
1556	}
1557
1558
1559	/**
1560	establishes a connection right up to doing tconX, password specified.
1561	@param output_cli A fully initialised cli structure, non-null only on success
1562	@param dest_host The netbios name of the remote host
1563	@param dest_ip (optional) The the destination IP, NULL for name based lookup
1564	@param port (optional) The destination port (0 for default)
1565	@param service (optional) The share to make the connection to. Should be 'unqualified' in any way.
1566	@param service_type The 'type' of serivice.
1567	@param user Username, unix string
1568	@param domain User's domain
1569	@param password User's password, unencrypted unix string.
1570	@param retry BOOL. Did this connection fail with a retryable error ?
1571	*/
1572
1573	NTSTATUS cli_full_connection(struct cli_state **output_cli,
1574	const char *my_name,
1575	const char *dest_host,
1576	struct in_addr *dest_ip, int port,
1577	const char service, const char service_type,
1578	const char user, const char domain,
1579	const char *password, int flags,
1580	int signing_state,
1581	BOOL *retry)
1582	{
1583	NTSTATUS nt_status;
1584	struct cli_state *cli = NULL;
1585	int pw_len = password ? strlen(password)+1 : 0;
1586
1587	*output_cli = NULL;
1588
1589	if (password == NULL) {
1590	password = "";
1591	}
1592
1593	nt_status = cli_start_connection(&cli, my_name, dest_host,
1594	dest_ip, port, signing_state, flags, retry);
1595
1596	if (!NT_STATUS_IS_OK(nt_status)) {
1597	return nt_status;
1598	}
1599
1600	nt_status = cli_session_setup(cli, user, password, pw_len, password,
1601	pw_len, domain);
1602	if (!NT_STATUS_IS_OK(nt_status)) {
1603
1604	if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1605	DEBUG(1,("failed session setup with %s\n",
1606	nt_errstr(nt_status)));
1607	cli_shutdown(cli);
1608	return nt_status;
1609	}
1610
1611	nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1612	if (!NT_STATUS_IS_OK(nt_status)) {
1613	DEBUG(1,("anonymous failed session setup with %s\n",
1614	nt_errstr(nt_status)));
1615	cli_shutdown(cli);
1616	return nt_status;
1617	}
1618	}
1619
1620	if (service) {
1621	if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1622	nt_status = cli_nt_error(cli);
1623	DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1624	cli_shutdown(cli);
1625	if (NT_STATUS_IS_OK(nt_status)) {
1626	nt_status = NT_STATUS_UNSUCCESSFUL;
1627	}
1628	return nt_status;
1629	}
1630	}
1631
1632	cli_init_creds(cli, user, domain, password);
1633
1634	*output_cli = cli;
1635	return NT_STATUS_OK;
1636	}
1637
1638	/****************************************************************************
1639	Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1640	****************************************************************************/
1641
1642	BOOL attempt_netbios_session_request(struct cli_state *ppcli, const char srchost, const char *desthost,
1643	struct in_addr *pdest_ip)
1644	{
1645	struct nmb_name calling, called;
1646
1647	make_nmb_name(&calling, srchost, 0x0);
1648
1649	/*
1650	* If the called name is an IP address
1651	* then use *SMBSERVER immediately.
1652	*/
1653
1654	if(is_ipaddress(desthost)) {
1655	make_nmb_name(&called, "*SMBSERVER", 0x20);
1656	} else {
1657	make_nmb_name(&called, desthost, 0x20);
1658	}
1659
1660	if (!cli_session_request(*ppcli, &calling, &called)) {
1661	NTSTATUS status;
1662	struct nmb_name smbservername;
1663
1664	make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1665
1666	/*
1667	* If the name wasn't *SMBSERVER then
1668	* try with *SMBSERVER if the first name fails.
1669	*/
1670
1671	if (nmb_name_equal(&called, &smbservername)) {
1672
1673	/*
1674	* The name used was *SMBSERVER, don't bother with another name.
1675	*/
1676
1677	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1678	with error %s.\n", desthost, cli_errstr(*ppcli) ));
1679	return False;
1680	}
1681
1682	/* Try again... */
1683	cli_shutdown(*ppcli);
1684
1685	*ppcli = cli_initialise();
1686	if (!*ppcli) {
1687	/* Out of memory... */
1688	return False;
1689	}
1690
1691	status = cli_connect(*ppcli, desthost, pdest_ip);
1692	if (!NT_STATUS_IS_OK(status) \|\|
1693	!cli_session_request(*ppcli, &calling, &smbservername)) {
1694	DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1695	name SMBSERVER with error %s\n", desthost, cli_errstr(ppcli) ));
1696	return False;
1697	}
1698	}
1699
1700	return True;
1701	}
1702
1703
1704
1705
1706
1707	/****************************************************************************
1708	Send an old style tcon.
1709	****************************************************************************/
1710	NTSTATUS cli_raw_tcon(struct cli_state *cli,
1711	const char service, const char pass, const char *dev,
1712	uint16 max_xmit, uint16 tid)
1713	{
1714	char *p;
1715
1716	if (!lp_client_plaintext_auth() && (*pass)) {
1717	DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1718	" is disabled\n"));
1719	return NT_STATUS_ACCESS_DENIED;
1720	}
1721
1722	memset(cli->outbuf,'\0',smb_size);
1723	memset(cli->inbuf,'\0',smb_size);
1724
1725	set_message(cli->outbuf, 0, 0, True);
1726	SCVAL(cli->outbuf,smb_com,SMBtcon);
1727	cli_setup_packet(cli);
1728
1729	p = smb_buf(cli->outbuf);
1730	*p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE \| STR_NOALIGN);
1731	*p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE \| STR_NOALIGN);
1732	*p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE \| STR_NOALIGN);
1733
1734	cli_setup_bcc(cli, p);
1735
1736	cli_send_smb(cli);
1737	if (!cli_receive_smb(cli)) {
1738	return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1739	}
1740
1741	if (cli_is_error(cli)) {
1742	return cli_nt_error(cli);
1743	}
1744
1745	*max_xmit = SVAL(cli->inbuf, smb_vwv0);
1746	*tid = SVAL(cli->inbuf, smb_vwv1);
1747
1748	return NT_STATUS_OK;
1749	}
1750
1751	/* Return a cli_state pointing at the IPC$ share for the given server */
1752
1753	struct cli_state get_ipc_connect(char server, struct in_addr *server_ip,
1754	struct user_auth_info *user_info)
1755	{
1756	struct cli_state *cli;
1757	pstring myname;
1758	NTSTATUS nt_status;
1759
1760	get_myname(myname);
1761
1762	nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1763	user_info->username, lp_workgroup(), user_info->password,
1764	CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK, Undefined, NULL);
1765
1766	if (NT_STATUS_IS_OK(nt_status)) {
1767	return cli;
1768	} else if (is_ipaddress(server)) {
1769	/* windows 9* needs a correct NMB name for connections */
1770	fstring remote_name;
1771
1772	if (name_status_find("", 0, 0, server_ip, remote_name)) {
1773	cli = get_ipc_connect(remote_name, server_ip, user_info);
1774	if (cli)
1775	return cli;
1776	}
1777	}
1778	return NULL;
1779	}
1780
1781	/*
1782	* Given the IP address of a master browser on the network, return its
1783	* workgroup and connect to it.
1784	*
1785	* This function is provided to allow additional processing beyond what
1786	* get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1787	* browsers and obtain each master browsers' list of domains (in case the
1788	* first master browser is recently on the network and has not yet
1789	* synchronized with other master browsers and therefore does not yet have the
1790	* entire network browse list)
1791	*/
1792
1793	struct cli_state get_ipc_connect_master_ip(struct ip_service mb_ip, pstring workgroup, struct user_auth_info *user_info)
1794	{
1795	static fstring name;
1796	struct cli_state *cli;
1797	struct in_addr server_ip;
1798
1799	DEBUG(99, ("Looking up name of master browser %s\n",
1800	inet_ntoa(mb_ip->ip)));
1801
1802	/*
1803	* Do a name status query to find out the name of the master browser.
1804	* We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1805	* master browser will not respond to a wildcard query (or, at least,
1806	* an NT4 server acting as the domain master browser will not).
1807	*
1808	* We might be able to use ONLY the query on MSBROWSE, but that's not
1809	* yet been tested with all Windows versions, so until it is, leave
1810	* the original wildcard query as the first choice and fall back to
1811	* MSBROWSE if the wildcard query fails.
1812	*/
1813	if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1814	!name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1815
1816	DEBUG(99, ("Could not retrieve name status for %s\n",
1817	inet_ntoa(mb_ip->ip)));
1818	return NULL;
1819	}
1820
1821	if (!find_master_ip(name, &server_ip)) {
1822	DEBUG(99, ("Could not find master ip for %s\n", name));
1823	return NULL;
1824	}
1825
1826	pstrcpy(workgroup, name);
1827
1828	DEBUG(4, ("found master browser %s, %s\n",
1829	name, inet_ntoa(mb_ip->ip)));
1830
1831	cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1832
1833	return cli;
1834
1835	}
1836
1837	/*
1838	* Return the IP address and workgroup of a master browser on the network, and
1839	* connect to it.
1840	*/
1841
1842	struct cli_state get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info user_info)
1843	{
1844	struct ip_service *ip_list;
1845	struct cli_state *cli;
1846	int i, count;
1847
1848	DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1849
1850	/* Go looking for workgroups by broadcasting on the local network */
1851
1852	if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1853	DEBUG(99, ("No master browsers responded\n"));
1854	return False;
1855	}
1856
1857	for (i = 0; i < count; i++) {
1858	DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1859
1860	cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1861	if (cli)
1862	return(cli);
1863	}
1864
1865	return NULL;
1866	}

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