freebsd-dev/sys/netsmb/smb_rq.h
Tim J. Robbins 190b2c4f8a Add support for SMB request signing, which prevents "man in the middle"
attacks and is required to connect to Windows 2003 servers in their
default configuration. This adds an extra field to the SMB header
containing the truncated 64-bit MD5 digest of a key (a function of the
user's password and the server's authentication challenge), an implicit
sequence number, and the message data itself. As signing each message
imposes a significant performance penalty, we only enable it if the
server will not let us connect without it; this should eventually become
an option to mount_smbfs.
2004-01-02 22:38:42 +00:00

156 lines
5.6 KiB
C

/*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _NETSMB_SMB_RQ_H_
#define _NETSMB_SMB_RQ_H_
#ifndef MB_MSYSTEM
#include <sys/mchain.h>
#endif
#define SMBR_ALLOCED 0x0001 /* structure was malloced */
#define SMBR_SENT 0x0002 /* request successfully transmitted */
#define SMBR_REXMIT 0x0004 /* request should be retransmitted */
#define SMBR_INTR 0x0008 /* request interrupted */
#define SMBR_RESTART 0x0010 /* request should be repeated if possible */
#define SMBR_NORESTART 0x0020 /* request is not restartable */
#define SMBR_MULTIPACKET 0x0040 /* multiple packets can be sent and received */
#define SMBR_INTERNAL 0x0080 /* request is internal to smbrqd */
#define SMBR_XLOCK 0x0100 /* request locked and can't be moved */
#define SMBR_XLOCKWANT 0x0200 /* waiter on XLOCK */
#define SMBT2_ALLSENT 0x0001 /* all data and params are sent */
#define SMBT2_ALLRECV 0x0002 /* all data and params are received */
#define SMBT2_ALLOCED 0x0004
#define SMBT2_RESTART 0x0008
#define SMBT2_NORESTART 0x0010
#define SMBT2_SECONDARY 0x0020 /* secondary request */
#define SMBRQ_SLOCK(rqp) smb_sl_lock(&(rqp)->sr_slock)
#define SMBRQ_SUNLOCK(rqp) smb_sl_unlock(&(rqp)->sr_slock)
#define SMBRQ_SLOCKPTR(rqp) (&(rqp)->sr_slock)
enum smbrq_state {
SMBRQ_NOTSENT, /* rq have data to send */
SMBRQ_SENT, /* send procedure completed */
SMBRQ_REPLYRECEIVED,
SMBRQ_NOTIFIED /* owner notified about completion */
};
struct smb_vc;
struct smb_t2rq;
struct smb_rq {
enum smbrq_state sr_state;
struct smb_vc * sr_vc;
struct smb_share* sr_share;
u_short sr_mid;
u_int32_t sr_seqno;
u_int32_t sr_rseqno;
struct mbchain sr_rq;
u_int8_t sr_rqflags;
u_int16_t sr_rqflags2;
u_char * sr_wcount;
u_short * sr_bcount;
struct mdchain sr_rp;
int sr_rpgen;
int sr_rplast;
int sr_flags; /* SMBR_* */
int sr_rpsize;
struct smb_cred * sr_cred;
int sr_timo;
int sr_rexmit;
int sr_sendcnt;
struct timespec sr_timesent;
int sr_lerror;
u_int8_t * sr_rqsig;
u_int16_t * sr_rqtid;
u_int16_t * sr_rquid;
u_int8_t sr_errclass;
u_int16_t sr_serror;
u_int32_t sr_error;
u_int8_t sr_rpflags;
u_int16_t sr_rpflags2;
u_int16_t sr_rptid;
u_int16_t sr_rppid;
u_int16_t sr_rpuid;
u_int16_t sr_rpmid;
struct smb_slock sr_slock; /* short term locks */
struct smb_t2rq * sr_t2;
TAILQ_ENTRY(smb_rq) sr_link;
};
struct smb_t2rq {
u_int16_t t2_setupcount;
u_int16_t * t2_setupdata;
u_int16_t t2_setup[2]; /* most of rqs has setupcount of 1 */
u_int8_t t2_maxscount; /* max setup words to return */
u_int16_t t2_maxpcount; /* max param bytes to return */
u_int16_t t2_maxdcount; /* max data bytes to return */
u_int16_t t2_fid; /* for T2 request */
char * t_name; /* for T request, should be zero for T2 */
int t2_flags; /* SMBT2_ */
struct mbchain t2_tparam; /* parameters to transmit */
struct mbchain t2_tdata; /* data to transmit */
struct mdchain t2_rparam; /* received parameters */
struct mdchain t2_rdata; /* received data */
struct smb_cred*t2_cred;
struct smb_connobj *t2_source;
struct smb_rq * t2_rq;
struct smb_vc * t2_vc;
};
int smb_rq_alloc(struct smb_connobj *layer, u_char cmd,
struct smb_cred *scred, struct smb_rq **rqpp);
int smb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd,
struct smb_cred *scred);
void smb_rq_done(struct smb_rq *rqp);
int smb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp);
int smb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp);
void smb_rq_wstart(struct smb_rq *rqp);
void smb_rq_wend(struct smb_rq *rqp);
void smb_rq_bstart(struct smb_rq *rqp);
void smb_rq_bend(struct smb_rq *rqp);
int smb_rq_intr(struct smb_rq *rqp);
int smb_rq_simple(struct smb_rq *rqp);
int smb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred,
struct smb_t2rq **rqpp);
int smb_t2_init(struct smb_t2rq *rqp, struct smb_connobj *layer, u_short setup,
struct smb_cred *scred);
void smb_t2_done(struct smb_t2rq *t2p);
int smb_t2_request(struct smb_t2rq *t2p);
#endif /* !_NETSMB_SMB_RQ_H_ */