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
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
40 #include <sys/protosw.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
45 #include <sys/sysctl.h>
46 #include <sys/condvar.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,td) (so)->so_proto->pr_usrreqs->pru_sosend( \
74 so, NULL, 0, m, 0, flags, td)
76 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
77 u_int8_t *rpcodep, struct thread *td);
78 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
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 thread *td)
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,
104 struct timeval atv, rtv, ttv;
105 int ncoll, timo, error;
109 if (itimerfix(&atv)) {
111 goto done_noproclock;
113 getmicrouptime(&rtv);
114 timevaladd(&atv, &rtv);
121 mtx_lock_spin(&sched_lock);
122 td->td_flags |= TDF_SELECT;
123 mtx_unlock_spin(&sched_lock);
124 mtx_unlock(&sellock);
125 error = nb_poll(nbp, events, td);
132 getmicrouptime(&rtv);
133 if (timevalcmp(&rtv, &atv, >=))
136 timevalsub(&ttv, &rtv);
140 * An event of our interest may occur during locking a process.
141 * In order to avoid missing the event that occurred during locking
142 * the process, test P_SELECT and rescan file descriptors if
145 mtx_lock_spin(&sched_lock);
146 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) {
147 mtx_unlock_spin(&sched_lock);
150 mtx_unlock_spin(&sched_lock);
153 error = cv_timedwait(&selwait, &sellock, timo);
155 cv_wait(&selwait, &sellock);
160 clear_selinfo_list(td);
162 mtx_lock_spin(&sched_lock);
163 td->td_flags &= ~TDF_SELECT;
164 mtx_unlock_spin(&sched_lock);
165 mtx_unlock(&sellock);
168 if (error == ERESTART)
174 nb_intr(struct nbpcb *nbp, struct proc *p)
180 nb_upcall(struct socket *so, void *arg, int waitflag)
182 struct nbpcb *nbp = arg;
184 if (arg == NULL || nbp->nbp_selectid == NULL)
186 wakeup(nbp->nbp_selectid);
190 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
192 u_int32_t *p = mtod(m, u_int32_t *);
194 *p = htonl((len & 0x1FFFF) | (type << 24));
199 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
207 NBDEBUG("[%s]\n", cp);
210 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
221 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
226 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
231 so->so_upcallarg = (caddr_t)nbp;
232 so->so_upcall = nb_upcall;
233 so->so_rcv.sb_flags |= SB_UPCALL;
234 so->so_rcv.sb_timeo = (5 * hz);
235 so->so_snd.sb_timeo = (5 * hz);
236 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
239 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
240 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
241 so->so_rcv.sb_flags &= ~SB_NOINTR;
242 so->so_snd.sb_flags &= ~SB_NOINTR;
243 error = soconnect(so, (struct sockaddr*)to, td);
247 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
248 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
249 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
250 (error = nb_intr(nbp, td->td_proc)) != 0) {
251 so->so_state &= ~SS_ISCONNECTING;
257 error = so->so_error;
265 smb_nbst_disconnect(nbp->nbp_vc, td);
270 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
272 struct mbchain mb, *mbp = &mb;
273 struct mdchain md, *mdp = &md;
276 struct sockaddr_in sin;
281 error = mb_init(mbp);
284 mb_put_uint32le(mbp, 0);
285 nb_put_name(mbp, nbp->nbp_paddr);
286 nb_put_name(mbp, nbp->nbp_laddr);
287 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
288 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
290 nbp->nbp_state = NBST_RQSENT;
296 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
297 error = nbssn_rselect(nbp, &tv, POLLIN, td);
298 if (error == EWOULDBLOCK) { /* Timeout */
299 NBDEBUG("initial request timeout\n");
302 if (error) /* restart or interrupt */
304 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
306 NBDEBUG("recv() error %d\n", error);
310 * Process NETBIOS reply
316 if (rpcode == NB_SSN_POSRESP) {
317 nbp->nbp_state = NBST_SESSION;
318 nbp->nbp_flags |= NBF_CONNECTED;
321 if (rpcode != NB_SSN_RTGRESP) {
322 error = ECONNABORTED;
326 error = ECONNABORTED;
329 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
330 md_get_uint16(mdp, &port);
332 nbp->nbp_state = NBST_RETARGET;
333 smb_nbst_disconnect(nbp->nbp_vc, td);
334 error = nb_connect_in(nbp, &sin, td);
336 error = nbssn_rq_request(nbp, td);
338 smb_nbst_disconnect(nbp->nbp_vc, td);
348 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
349 u_int8_t *rpcodep, int flags, struct thread *td)
351 struct socket *so = nbp->nbp_tso;
357 aio.iov_base = (caddr_t)&len;
358 aio.iov_len = sizeof(len);
361 auio.uio_segflg = UIO_SYSSPACE;
362 auio.uio_rw = UIO_READ;
364 auio.uio_resid = sizeof(len);
366 error = so->so_proto->pr_usrreqs->pru_soreceive
367 (so, (struct sockaddr **)NULL, &auio,
368 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
371 if (auio.uio_resid > 0) {
372 SMBSDEBUG("short reply\n");
376 *rpcodep = (len >> 24) & 0xFF;
378 if (len > SMB_MAXPKTLEN) {
379 SMBERROR("packet too long (%d)\n", len);
387 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
388 u_int8_t *rpcodep, struct thread *td)
390 struct socket *so = nbp->nbp_tso;
404 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
406 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
407 nbp->nbp_state = NBST_CLOSED;
408 NBDEBUG("session closed by peer\n");
413 if (len == 0 && nbp->nbp_state != NBST_SESSION)
415 if (rpcode == NB_SSN_KEEPALIVE)
417 bzero(&auio, sizeof(auio));
418 auio.uio_resid = len;
421 rcvflg = MSG_WAITALL;
422 error = so->so_proto->pr_usrreqs->pru_soreceive
423 (so, (struct sockaddr **)NULL,
424 &auio, &m, (struct mbuf **)NULL, &rcvflg);
425 } while (error == EWOULDBLOCK || error == EINTR ||
429 if (auio.uio_resid > 0) {
430 SMBERROR("packet is shorter than expected\n");
434 if (nbp->nbp_state == NBST_SESSION &&
435 rpcode == NB_SSN_MESSAGE)
437 NBDEBUG("non-session packet %x\n", rpcode);
456 * SMB transport interface
459 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
463 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
464 bzero(nbp, sizeof *nbp);
465 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
466 nbp->nbp_state = NBST_CLOSED;
468 nbp->nbp_sndbuf = smb_tcpsndbuf;
469 nbp->nbp_rcvbuf = smb_tcprcvbuf;
475 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
477 struct nbpcb *nbp = vcp->vc_tdata;
481 smb_nbst_disconnect(vcp, td);
483 free(nbp->nbp_laddr, M_SONAME);
485 free(nbp->nbp_paddr, M_SONAME);
491 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
493 struct nbpcb *nbp = vcp->vc_tdata;
494 struct sockaddr_nb *snb;
500 if (nbp->nbp_flags & NBF_LOCADDR)
503 * It is possible to create NETBIOS name in the kernel,
504 * but nothing prevents us to do it in the user space.
509 if (slen < NB_MINSALEN)
511 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
516 nbp->nbp_laddr = snb;
517 nbp->nbp_flags |= NBF_LOCADDR;
524 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
526 struct nbpcb *nbp = vcp->vc_tdata;
527 struct sockaddr_in sin;
528 struct sockaddr_nb *snb;
529 struct timespec ts1, ts2;
533 if (nbp->nbp_tso != NULL)
535 if (nbp->nbp_laddr == NULL)
538 if (slen < NB_MINSALEN)
540 if (nbp->nbp_paddr) {
541 free(nbp->nbp_paddr, M_SONAME);
542 nbp->nbp_paddr = NULL;
544 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
547 nbp->nbp_paddr = snb;
548 sin = snb->snb_addrin;
550 error = nb_connect_in(nbp, &sin, td);
554 timespecsub(&ts2, &ts1);
555 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
558 timespecadd(&nbp->nbp_timo, &ts2);
559 timespecadd(&nbp->nbp_timo, &ts2);
560 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
561 error = nbssn_rq_request(nbp, td);
563 smb_nbst_disconnect(vcp, td);
568 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
570 struct nbpcb *nbp = vcp->vc_tdata;
573 if (nbp == NULL || nbp->nbp_tso == NULL)
575 if ((so = nbp->nbp_tso) != NULL) {
576 nbp->nbp_flags &= ~NBF_CONNECTED;
577 nbp->nbp_tso = (struct socket *)NULL;
581 if (nbp->nbp_state != NBST_RETARGET) {
582 nbp->nbp_state = NBST_CLOSED;
588 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
590 struct nbpcb *nbp = vcp->vc_tdata;
593 if (nbp->nbp_state != NBST_SESSION) {
597 M_PREPEND(m0, 4, M_WAITOK);
600 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
601 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
611 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
613 struct nbpcb *nbp = vcp->vc_tdata;
617 nbp->nbp_flags |= NBF_RECVLOCK;
618 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
619 nbp->nbp_flags &= ~NBF_RECVLOCK;
624 smb_nbst_timo(struct smb_vc *vcp)
630 smb_nbst_intr(struct smb_vc *vcp)
632 struct nbpcb *nbp = vcp->vc_tdata;
634 if (nbp == NULL || nbp->nbp_tso == NULL)
636 sorwakeup(nbp->nbp_tso);
637 sowwakeup(nbp->nbp_tso);
641 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
643 struct nbpcb *nbp = vcp->vc_tdata;
647 *(int*)data = nbp->nbp_sndbuf;
650 *(int*)data = nbp->nbp_rcvbuf;
653 *(struct timespec*)data = nbp->nbp_timo;
662 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
664 struct nbpcb *nbp = vcp->vc_tdata;
668 nbp->nbp_selectid = data;
677 * Check for fatal errors
680 smb_nbst_fatal(struct smb_vc *vcp, int error)
692 struct smb_tran_desc smb_tran_nbtcp_desc = {
694 smb_nbst_create, smb_nbst_done,
695 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
696 smb_nbst_send, smb_nbst_recv,
697 smb_nbst_timo, smb_nbst_intr,
698 smb_nbst_getparam, smb_nbst_setparam,