2 * Copyright (c) 2000-2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/sys/netsmb/smb_trantcp.c,v 1.3.2.1 2001/05/22 08:32:34 bp Exp $
33 * $DragonFly: src/sys/netproto/smb/smb_trantcp.c,v 1.2 2003/06/17 04:28:54 dillon Exp $
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
41 #include <sys/protosw.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
46 #include <sys/sysctl.h>
49 #include <net/route.h>
51 #include <netinet/in.h>
52 #include <netinet/tcp.h>
54 #include <sys/mchain.h>
56 #include <netsmb/netbios.h>
58 #include <netsmb/smb.h>
59 #include <netsmb/smb_conn.h>
60 #include <netsmb/smb_tran.h>
61 #include <netsmb/smb_trantcp.h>
62 #include <netsmb/smb_subr.h>
64 #define M_NBDATA M_PCB
66 static int smb_tcpsndbuf = 10 * 1024;
67 static int smb_tcprcvbuf = 10 * 1024;
69 SYSCTL_DECL(_net_smb);
70 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
71 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
73 #define nb_sosend(so,m,flags,p) (so)->so_proto->pr_usrreqs->pru_sosend( \
74 so, NULL, 0, m, 0, flags, p)
76 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
77 u_int8_t *rpcodep, struct proc *p);
78 static int smb_nbst_disconnect(struct smb_vc *vcp, struct proc *p);
81 nb_setsockopt_int(struct socket *so, int level, int name, int val)
85 bzero(&sopt, sizeof(sopt));
86 sopt.sopt_level = level;
87 sopt.sopt_name = name;
89 sopt.sopt_valsize = sizeof(val);
90 return sosetopt(so, &sopt);
94 nb_poll(struct nbpcb *nbp, int events, struct proc *p)
96 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso,
101 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct proc *p)
103 struct timeval atv, rtv, ttv;
108 if (itimerfix(&atv)) {
112 getmicrouptime(&rtv);
113 timevaladd(&atv, &rtv);
117 p->p_flag |= P_SELECT;
118 error = nb_poll(nbp, events, p);
124 getmicrouptime(&rtv);
125 if (timevalcmp(&rtv, &atv, >=))
128 timevalsub(&ttv, &rtv);
132 if ((p->p_flag & P_SELECT) == 0) {
136 p->p_flag &= ~P_SELECT;
137 error = tsleep((caddr_t)&selwait, PSOCK, "nbsel", timo);
140 p->p_flag &= ~P_SELECT;
141 if (error == ERESTART)
147 nb_intr(struct nbpcb *nbp, struct proc *p)
153 nb_upcall(struct socket *so, void *arg, int waitflag)
155 struct nbpcb *nbp = arg;
157 if (arg == NULL || nbp->nbp_selectid == NULL)
159 wakeup(nbp->nbp_selectid);
163 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
165 u_int32_t *p = mtod(m, u_int32_t *);
167 *p = htonl((len & 0x1FFFF) | (type << 24));
172 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
180 NBDEBUG("[%s]\n", cp);
183 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
194 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct proc *p)
199 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, p);
203 so->so_upcallarg = (caddr_t)nbp;
204 so->so_upcall = nb_upcall;
205 so->so_rcv.sb_flags |= SB_UPCALL;
206 so->so_rcv.sb_timeo = (5 * hz);
207 so->so_snd.sb_timeo = (5 * hz);
208 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
211 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
212 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
213 so->so_rcv.sb_flags &= ~SB_NOINTR;
214 so->so_snd.sb_flags &= ~SB_NOINTR;
215 error = soconnect(so, (struct sockaddr*)to, p);
219 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
220 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
221 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
222 (error = nb_intr(nbp, p)) != 0) {
223 so->so_state &= ~SS_ISCONNECTING;
229 error = so->so_error;
237 smb_nbst_disconnect(nbp->nbp_vc, p);
242 nbssn_rq_request(struct nbpcb *nbp, struct proc *p)
244 struct mbchain mb, *mbp = &mb;
245 struct mdchain md, *mdp = &md;
248 struct sockaddr_in sin;
253 error = mb_init(mbp);
256 mb_put_uint32le(mbp, 0);
257 nb_put_name(mbp, nbp->nbp_paddr);
258 nb_put_name(mbp, nbp->nbp_laddr);
259 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
260 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, p);
262 nbp->nbp_state = NBST_RQSENT;
268 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
269 error = nbssn_rselect(nbp, &tv, POLLIN, p);
270 if (error == EWOULDBLOCK) { /* Timeout */
271 NBDEBUG("initial request timeout\n");
274 if (error) /* restart or interrupt */
276 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, p);
278 NBDEBUG("recv() error %d\n", error);
282 * Process NETBIOS reply
288 if (rpcode == NB_SSN_POSRESP) {
289 nbp->nbp_state = NBST_SESSION;
290 nbp->nbp_flags |= NBF_CONNECTED;
293 if (rpcode != NB_SSN_RTGRESP) {
294 error = ECONNABORTED;
298 error = ECONNABORTED;
301 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
302 md_get_uint16(mdp, &port);
304 nbp->nbp_state = NBST_RETARGET;
305 smb_nbst_disconnect(nbp->nbp_vc, p);
306 error = nb_connect_in(nbp, &sin, p);
308 error = nbssn_rq_request(nbp, p);
310 smb_nbst_disconnect(nbp->nbp_vc, p);
320 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
321 u_int8_t *rpcodep, int flags, struct proc *p)
323 struct socket *so = nbp->nbp_tso;
329 aio.iov_base = (caddr_t)&len;
330 aio.iov_len = sizeof(len);
333 auio.uio_segflg = UIO_SYSSPACE;
334 auio.uio_rw = UIO_READ;
336 auio.uio_resid = sizeof(len);
338 error = so->so_proto->pr_usrreqs->pru_soreceive
339 (so, (struct sockaddr **)NULL, &auio,
340 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
343 if (auio.uio_resid > 0) {
344 SMBSDEBUG("short reply\n");
348 *rpcodep = (len >> 24) & 0xFF;
350 if (len > SMB_MAXPKTLEN) {
351 SMBERROR("packet too long (%d)\n", len);
359 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
360 u_int8_t *rpcodep, struct proc *p)
362 struct socket *so = nbp->nbp_tso;
376 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, p);
378 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
379 nbp->nbp_state = NBST_CLOSED;
380 NBDEBUG("session closed by peer\n");
385 if (len == 0 && nbp->nbp_state != NBST_SESSION)
387 if (rpcode == NB_SSN_KEEPALIVE)
389 bzero(&auio, sizeof(auio));
390 auio.uio_resid = len;
393 rcvflg = MSG_WAITALL;
394 error = so->so_proto->pr_usrreqs->pru_soreceive
395 (so, (struct sockaddr **)NULL,
396 &auio, &m, (struct mbuf **)NULL, &rcvflg);
397 } while (error == EWOULDBLOCK || error == EINTR ||
401 if (auio.uio_resid > 0) {
402 SMBERROR("packet is shorter than expected\n");
406 if (nbp->nbp_state == NBST_SESSION &&
407 rpcode == NB_SSN_MESSAGE)
409 NBDEBUG("non-session packet %x\n", rpcode);
428 * SMB transport interface
431 smb_nbst_create(struct smb_vc *vcp, struct proc *p)
435 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
436 bzero(nbp, sizeof *nbp);
437 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
438 nbp->nbp_state = NBST_CLOSED;
440 nbp->nbp_sndbuf = smb_tcpsndbuf;
441 nbp->nbp_rcvbuf = smb_tcprcvbuf;
447 smb_nbst_done(struct smb_vc *vcp, struct proc *p)
449 struct nbpcb *nbp = vcp->vc_tdata;
453 smb_nbst_disconnect(vcp, p);
455 free(nbp->nbp_laddr, M_SONAME);
457 free(nbp->nbp_paddr, M_SONAME);
463 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct proc *p)
465 struct nbpcb *nbp = vcp->vc_tdata;
466 struct sockaddr_nb *snb;
472 if (nbp->nbp_flags & NBF_LOCADDR)
475 * It is possible to create NETBIOS name in the kernel,
476 * but nothing prevents us to do it in the user space.
481 if (slen < NB_MINSALEN)
483 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
488 nbp->nbp_laddr = snb;
489 nbp->nbp_flags |= NBF_LOCADDR;
496 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct proc *p)
498 struct nbpcb *nbp = vcp->vc_tdata;
499 struct sockaddr_in sin;
500 struct sockaddr_nb *snb;
501 struct timespec ts1, ts2;
505 if (nbp->nbp_tso != NULL)
507 if (nbp->nbp_laddr == NULL)
510 if (slen < NB_MINSALEN)
512 if (nbp->nbp_paddr) {
513 free(nbp->nbp_paddr, M_SONAME);
514 nbp->nbp_paddr = NULL;
516 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
519 nbp->nbp_paddr = snb;
520 sin = snb->snb_addrin;
522 error = nb_connect_in(nbp, &sin, p);
526 timespecsub(&ts2, &ts1);
527 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
530 timespecadd(&nbp->nbp_timo, &ts2);
531 timespecadd(&nbp->nbp_timo, &ts2);
532 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
533 error = nbssn_rq_request(nbp, p);
535 smb_nbst_disconnect(vcp, p);
540 smb_nbst_disconnect(struct smb_vc *vcp, struct proc *p)
542 struct nbpcb *nbp = vcp->vc_tdata;
545 if (nbp == NULL || nbp->nbp_tso == NULL)
547 if ((so = nbp->nbp_tso) != NULL) {
548 nbp->nbp_flags &= ~NBF_CONNECTED;
549 nbp->nbp_tso = (struct socket *)NULL;
553 if (nbp->nbp_state != NBST_RETARGET) {
554 nbp->nbp_state = NBST_CLOSED;
560 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct proc *p)
562 struct nbpcb *nbp = vcp->vc_tdata;
565 if (nbp->nbp_state != NBST_SESSION) {
569 M_PREPEND(m0, 4, M_WAITOK);
572 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
573 error = nb_sosend(nbp->nbp_tso, m0, 0, p);
583 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct proc *p)
585 struct nbpcb *nbp = vcp->vc_tdata;
589 nbp->nbp_flags |= NBF_RECVLOCK;
590 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, p);
591 nbp->nbp_flags &= ~NBF_RECVLOCK;
596 smb_nbst_timo(struct smb_vc *vcp)
602 smb_nbst_intr(struct smb_vc *vcp)
604 struct nbpcb *nbp = vcp->vc_tdata;
606 if (nbp == NULL || nbp->nbp_tso == NULL)
608 sorwakeup(nbp->nbp_tso);
609 sowwakeup(nbp->nbp_tso);
613 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
615 struct nbpcb *nbp = vcp->vc_tdata;
619 *(int*)data = nbp->nbp_sndbuf;
622 *(int*)data = nbp->nbp_rcvbuf;
625 *(struct timespec*)data = nbp->nbp_timo;
634 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
636 struct nbpcb *nbp = vcp->vc_tdata;
640 nbp->nbp_selectid = data;
649 * Check for fatal errors
652 smb_nbst_fatal(struct smb_vc *vcp, int error)
664 struct smb_tran_desc smb_tran_nbtcp_desc = {
666 smb_nbst_create, smb_nbst_done,
667 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
668 smb_nbst_send, smb_nbst_recv,
669 smb_nbst_timo, smb_nbst_intr,
670 smb_nbst_getparam, smb_nbst_setparam,