aboutsummaryrefslogtreecommitdiff
path: root/sys/netsmb/smb_conn.h
blob: 1ce8e3b623ac397e67ead0334ec2a930dcf5928f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2000-2001 Boris Popov
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

/*
 * Two levels of connection hierarchy
 */
#define	SMBL_SM		0
#define SMBL_VC		1
#define SMBL_SHARE	2
#define SMBL_NUM	3
#define SMBL_NONE	(-1)

#define	SMB_CS_NONE	0x0000
#define	SMB_CS_UPPER	0x0001		/* convert passed string to upper case */
#define	SMB_CS_LOWER	0x0002		/* convert passed string to lower case */

/*
 * Common object flags
 */
#define SMBO_GONE		0x1000000

/*
 * access modes
 */
#define	SMBM_READ		0400	/* read conn attrs.(like list shares) */
#define	SMBM_WRITE		0200	/* modify conn attrs */
#define	SMBM_EXEC		0100	/* can send SMB requests */
#define	SMBM_READGRP		0040
#define	SMBM_WRITEGRP		0020
#define	SMBM_EXECGRP		0010
#define	SMBM_READOTH		0004
#define	SMBM_WRITEOTH		0002
#define	SMBM_EXECOTH		0001
#define	SMBM_MASK		0777
#define	SMBM_EXACT		010000	/* check for specified mode exactly */
#define	SMBM_ALL		(SMBM_READ | SMBM_WRITE | SMBM_EXEC)
#define	SMBM_DEFAULT		(SMBM_READ | SMBM_WRITE | SMBM_EXEC)
#define	SMBM_ANY_OWNER		((uid_t)-1)
#define	SMBM_ANY_GROUP		((gid_t)-1)

/*
 * VC flags
 */
#define SMBV_PERMANENT		0x0002
#define SMBV_LONGNAMES		0x0004	/* connection is configured to use long names */
#define	SMBV_ENCRYPT		0x0008	/* server asked for encrypted password */
#define	SMBV_WIN95		0x0010	/* used to apply bugfixes for this OS */
#define	SMBV_PRIVATE		0x0020	/* connection can be used only by creator */
#define	SMBV_RECONNECTING	0x0040	/* conn is in the process of reconnection */
#define SMBV_SINGLESHARE	0x0080	/* only one share connecting should be allowed */
#define SMBV_CREATE		0x0100	/* lookup for create operation */
/*#define SMBV_FAILED		0x0200*/	/* last reconnect attempt has failed */
#define SMBV_UNICODE		0x0400	/* connection is configured to use Unicode */

/*
 * smb_share flags
 */
#define SMBS_PERMANENT		0x0001
#define SMBS_RECONNECTING	0x0002
#define SMBS_CONNECTED		0x0004

/*
 * share types
 */
#define	SMB_ST_DISK		0x0	/* A: */
#define	SMB_ST_PRINTER		0x1	/* LPT: */
#define	SMB_ST_PIPE		0x2	/* IPC */
#define	SMB_ST_COMM		0x3	/* COMM */
#define	SMB_ST_ANY		0x4
#define	SMB_ST_MAX		0x4
#define SMB_ST_NONE		0xff	/* not a part of protocol */

/*
 * Negotiated protocol parameters
 */
struct smb_sopt {
	int		sv_proto;
	int16_t		sv_tz;		/* offset in min relative to UTC */
	u_int32_t	sv_maxtx;	/* maximum transmit buf size */
	u_char		sv_sm;		/* security mode */
	u_int16_t	sv_maxmux;	/* max number of outstanding rq's */
	u_int16_t 	sv_maxvcs;	/* max number of VCs */
	u_int16_t	sv_rawmode;
	u_int32_t	sv_maxraw;	/* maximum raw-buffer size */
	u_int32_t	sv_skey;	/* session key */
	u_int32_t	sv_caps;	/* capabilities SMB_CAP_ */
};

/*
 * network IO daemon states
 */
enum smbiod_state {
	SMBIOD_ST_NOTCONN,	/* no connect request was made */
	SMBIOD_ST_RECONNECT,	/* a [re]connect attempt is in progress */
	SMBIOD_ST_TRANACTIVE,	/* transport level is up */
	SMBIOD_ST_VCACTIVE,	/* session established */
	SMBIOD_ST_DEAD		/* connection broken, transport is down */
};

/*
 * Info structures
 */
#define	SMB_INFO_NONE		0
#define	SMB_INFO_VC		2
#define	SMB_INFO_SHARE		3

struct smb_vc_info {
	int		itype;
	int		usecount;
	uid_t		uid;		/* user id of connection */
	gid_t		gid;		/* group of connection */
	mode_t		mode;		/* access mode */
	int		flags;
	enum smbiod_state iodstate;
	struct smb_sopt	sopt;
	char		srvname[SMB_MAXSRVNAMELEN + 1];
	char		vcname[128];
};

struct smb_share_info {
	int		itype;
	int		usecount;
	u_short		tid;		/* TID */
	int		type;		/* share type */
	uid_t		uid;		/* user id of connection */
	gid_t		gid;		/* group of connection */
	mode_t		mode;		/* access mode */
	int		flags;
	char		sname[128];
};

#ifdef _KERNEL

#include <netsmb/smb_subr.h>
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/condvar.h>
#include <sys/sx.h>

#define CONNADDREQ(a1,a2)	((a1)->sa_len == (a2)->sa_len && \
				 bcmp(a1, a2, (a1)->sa_len) == 0)

struct smb_vc;
struct smb_share;
struct smb_cred;
struct smb_rq;
struct mbdata;
struct smbioc_oshare;
struct smbioc_ossn;
struct uio;

TAILQ_HEAD(smb_rqhead, smb_rq);

#define SMB_DEFRQTIMO	5

#define SMB_DIALECT(vcp)	((vcp)->vc_sopt.sv_proto)

struct smb_tran_desc;

/*
 * Connection object
 */
struct smb_connobj;

typedef void smb_co_gone_t (struct smb_connobj *cp, struct smb_cred *scred);
typedef void smb_co_free_t (struct smb_connobj *cp);

struct smb_connobj {
	struct cv		co_lock;
	struct thread		*co_locker;
	struct sx		co_interlock;
	int			co_lockcnt;
	int			co_level;	/* SMBL_ */
	int			co_flags;
	int			co_usecount;
	struct smb_connobj *	co_parent;
	SLIST_HEAD(,smb_connobj)co_children;
	SLIST_ENTRY(smb_connobj)co_next;
	smb_co_gone_t *		co_gone;
	smb_co_free_t *		co_free;
};

#define	SMBCO_FOREACH(var, cp)	SLIST_FOREACH((var), &(cp)->co_children, co_next)

/*
 * Virtual Circuit (session) to a server.
 * This is the most (over)complicated part of SMB protocol.
 * For the user security level (usl), each session with different remote
 * user name has its own VC.
 * It is unclear however, should share security level (ssl) allow additional
 * VCs, because user name is not used and can be the same. On other hand,
 * multiple VCs allows us to create separate sessions to server on a per
 * user basis.
 */

/*
 * This lock protects vc_flags
 */
#define	SMBC_ST_LOCK(vcp)	smb_sl_lock(&(vcp)->vc_stlock)
#define	SMBC_ST_UNLOCK(vcp)	smb_sl_unlock(&(vcp)->vc_stlock)

struct smb_vc {
	struct smb_connobj obj;
	char *		vc_srvname;
	struct sockaddr*vc_paddr;	/* server addr */
	struct sockaddr*vc_laddr;	/* local addr, if any */
	char *		vc_username;
	char *		vc_pass;	/* password for usl case */
	char *		vc_domain;	/* workgroup/primary domain */

	u_int		vc_timo;	/* default request timeout */
	int		vc_maxvcs;	/* maximum number of VC per connection */

	void *		vc_tolower;	/* local charset */
	void *		vc_toupper;	/* local charset */
	void *		vc_toserver;	/* local charset to server one */
	void *		vc_tolocal;	/* server charset to local one */
	void *		vc_cp_toserver;	/* local charset to server one (using CodePage) */
	void *		vc_cp_tolocal;	/* server charset to local one (using CodePage) */
	void *		vc_ucs_toserver; /* local charset to server one (using UCS-2) */
	void *		vc_ucs_tolocal;	/* server charset to local one (using UCS-2) */
	int		vc_number;	/* number of this VC from the client side */
	int		vc_genid;
	uid_t		vc_uid;		/* user id of connection */
	gid_t		vc_grp;		/* group of connection */
	mode_t		vc_mode;	/* access mode */
	u_short		vc_smbuid;	/* unique vc id assigned by server */

	u_char		vc_hflags;	/* or'ed with flags in the smb header */
	u_short		vc_hflags2;	/* or'ed with flags in the smb header */
	void *		vc_tdata;	/* transport control block */
	struct smb_tran_desc *vc_tdesc;
	int		vc_chlen;	/* actual challenge length */
	u_char 		vc_ch[SMB_MAXCHALLENGELEN];
	u_short		vc_mid;		/* multiplex id */
	struct smb_sopt	vc_sopt;	/* server options */
	int		vc_txmax;	/* max tx/rx packet size */
	int		vc_rxmax;	/* max readx data size */
	int		vc_wxmax;	/* max writex data size */
	struct smbiod *	vc_iod;
	struct smb_slock vc_stlock;
	u_int32_t	vc_seqno;	/* my next sequence number */
	u_int8_t	*vc_mackey;	/* MAC key */
	int		vc_mackeylen;	/* length of MAC key */
};

#define vc_maxmux	vc_sopt.sv_maxmux
#define	vc_flags	obj.co_flags

#define SMB_UNICODE_STRINGS(vcp)	((vcp)->vc_hflags2 & SMB_FLAGS2_UNICODE)

#define	SMB_UNICODE_NAME	"UCS-2LE"

/*
 * smb_share structure describes connection to the given SMB share (tree).
 * Connection to share is always built on top of the VC.
 */

/*
 * This lock protects ss_flags
 */
#define	SMBS_ST_LOCK(ssp)	smb_sl_lock(&(ssp)->ss_stlock)
#define	SMBS_ST_LOCKPTR(ssp)	(&(ssp)->ss_stlock)
#define	SMBS_ST_UNLOCK(ssp)	smb_sl_unlock(&(ssp)->ss_stlock)

struct smb_share {
	struct smb_connobj obj;
	char *		ss_name;
	u_short		ss_tid;		/* TID */
	int		ss_type;	/* share type */
	uid_t		ss_uid;		/* user id of connection */
	gid_t		ss_grp;		/* group of connection */
	mode_t		ss_mode;	/* access mode */
	int		ss_vcgenid;
	char *		ss_pass;	/* password to a share, can be null */
	struct smb_slock ss_stlock;
};

#define	ss_flags	obj.co_flags

#define CPTOVC(cp)	((struct smb_vc*)(cp))
#define VCTOCP(vcp)	(&(vcp)->obj)
#define CPTOSS(cp)	((struct smb_share*)(cp))
#define	SSTOVC(ssp)	CPTOVC(((ssp)->obj.co_parent))
#define SSTOCP(ssp)	(&(ssp)->obj)

struct smb_vcspec {
	char *		srvname;
	struct sockaddr*sap;
	struct sockaddr*lap;
	int		flags;
	char *		username;
	char *		pass;
	char *		domain;
	mode_t		mode;
	mode_t		rights;
	uid_t		owner;
	gid_t		group;
	char *		localcs;
	char *		servercs;
	struct smb_sharespec *shspec;
	struct smb_share *ssp;		/* returned */
	/*
	 * The rest is an internal data
	 */
	struct smb_cred *scred;
};

struct smb_sharespec {
	char *		name;
	char *		pass;
	mode_t		mode;
	mode_t		rights;
	uid_t		owner;
	gid_t		group;
	int		stype;
	/*
	 * The rest is an internal data
	 */
	struct smb_cred *scred;
};

/*
 * Session level functions
 */
int  smb_sm_init(void);
int  smb_sm_done(void);
int  smb_sm_lookup(struct smb_vcspec *vcspec,
	struct smb_sharespec *shspec, struct smb_cred *scred,
	struct smb_vc **vcpp);

/*
 * Connection object
 */
void smb_co_ref(struct smb_connobj *cp);
void smb_co_rele(struct smb_connobj *cp, struct smb_cred *scred);
int  smb_co_get(struct smb_connobj *cp, struct smb_cred *scred);
void smb_co_put(struct smb_connobj *cp, struct smb_cred *scred);
int  smb_co_lock(struct smb_connobj *cp);
void smb_co_unlock(struct smb_connobj *cp);

/*
 * session level functions
 */
int  smb_vc_create(struct smb_vcspec *vcspec,
	struct smb_cred *scred, struct smb_vc **vcpp);
int  smb_vc_connect(struct smb_vc *vcp, struct smb_cred *scred);
int  smb_vc_access(struct smb_vc *vcp, struct smb_cred *scred, mode_t mode);
int  smb_vc_get(struct smb_vc *vcp, struct smb_cred *scred);
void smb_vc_put(struct smb_vc *vcp, struct smb_cred *scred);
void smb_vc_ref(struct smb_vc *vcp);
void smb_vc_rele(struct smb_vc *vcp, struct smb_cred *scred);
int  smb_vc_lock(struct smb_vc *vcp);
void smb_vc_unlock(struct smb_vc *vcp);
int  smb_vc_lookupshare(struct smb_vc *vcp, struct smb_sharespec *shspec,
	struct smb_cred *scred, struct smb_share **sspp);
const char * smb_vc_getpass(struct smb_vc *vcp);
u_short smb_vc_nextmid(struct smb_vc *vcp);

/*
 * share level functions
 */
int  smb_share_create(struct smb_vc *vcp, struct smb_sharespec *shspec,
	struct smb_cred *scred, struct smb_share **sspp);
int  smb_share_access(struct smb_share *ssp, struct smb_cred *scred, mode_t mode);
void smb_share_ref(struct smb_share *ssp);
void smb_share_rele(struct smb_share *ssp, struct smb_cred *scred);
int  smb_share_get(struct smb_share *ssp, struct smb_cred *scred);
void smb_share_put(struct smb_share *ssp, struct smb_cred *scred);
int  smb_share_lock(struct smb_share *ssp);
void smb_share_unlock(struct smb_share *ssp);
void smb_share_invalidate(struct smb_share *ssp);
int  smb_share_valid(struct smb_share *ssp);
const char * smb_share_getpass(struct smb_share *ssp);

/*
 * SMB protocol level functions
 */
int  smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred);
int  smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred);
int  smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred);
int  smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred);
int  smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred);
int  smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
	struct smb_cred *scred);
int  smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
	struct smb_cred *scred);
int  smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred);

/*
 * smbiod thread
 */

#define	SMBIOD_EV_NEWRQ		0x0001
#define	SMBIOD_EV_SHUTDOWN	0x0002
#define	SMBIOD_EV_CONNECT	0x0003
#define	SMBIOD_EV_DISCONNECT	0x0004
#define	SMBIOD_EV_TREECONNECT	0x0005
#define	SMBIOD_EV_MASK		0x00ff
#define	SMBIOD_EV_SYNC		0x0100
#define	SMBIOD_EV_PROCESSING	0x0200

struct smbiod_event {
	int	ev_type;
	int	ev_error;
	void *	ev_ident;
	STAILQ_ENTRY(smbiod_event)	ev_link;
};

#define	SMBIOD_SHUTDOWN		0x0001

struct smbiod {
	int			iod_id;
	int			iod_flags;
	enum smbiod_state	iod_state;
	int			iod_muxcnt;	/* number of active outstanding requests */
	int			iod_sleeptimo;
	struct smb_vc *		iod_vc;
	struct smb_slock	iod_rqlock;	/* iod_rqlist, iod_muxwant */
	struct smb_rqhead	iod_rqlist;	/* list of outstanding requests */
	int			iod_muxwant;
	struct proc *		iod_p;
	struct thread *		iod_td;
	struct smb_cred		iod_scred;
	struct smb_slock	iod_evlock;	/* iod_evlist */
	STAILQ_HEAD(,smbiod_event) iod_evlist;
	struct timespec 	iod_lastrqsent;
	struct timespec 	iod_pingtimo;
};

int  smb_iod_init(void);
int  smb_iod_done(void);
int  smb_iod_create(struct smb_vc *vcp);
int  smb_iod_destroy(struct smbiod *iod);
int  smb_iod_request(struct smbiod *iod, int event, void *ident);
int  smb_iod_addrq(struct smb_rq *rqp);
int  smb_iod_waitrq(struct smb_rq *rqp);
int  smb_iod_removerq(struct smb_rq *rqp);

#endif /* _KERNEL */