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);
126 /* XXX: Should be done when the thread is initialized. */
127 TAILQ_INIT(&td->td_selq);
128 error = nb_poll(nbp, events, td);
135 getmicrouptime(&rtv);
136 if (timevalcmp(&rtv, &atv, >=))
139 timevalsub(&ttv, &rtv);
143 * An event of our interest may occur during locking a process.
144 * In order to avoid missing the event that occurred during locking
145 * the process, test P_SELECT and rescan file descriptors if
148 mtx_lock_spin(&sched_lock);
149 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) {
150 mtx_unlock_spin(&sched_lock);
153 mtx_unlock_spin(&sched_lock);
156 error = cv_timedwait(&selwait, &sellock, timo);
158 cv_wait(&selwait, &sellock);
163 clear_selinfo_list(td);
165 mtx_lock_spin(&sched_lock);
166 td->td_flags &= ~TDF_SELECT;
167 mtx_unlock_spin(&sched_lock);
168 mtx_unlock(&sellock);
171 if (error == ERESTART)
177 nb_intr(struct nbpcb *nbp, struct proc *p)
183 nb_upcall(struct socket *so, void *arg, int waitflag)
185 struct nbpcb *nbp = arg;
187 if (arg == NULL || nbp->nbp_selectid == NULL)
189 wakeup(nbp->nbp_selectid);
193 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
195 u_int32_t *p = mtod(m, u_int32_t *);
197 *p = htonl((len & 0x1FFFF) | (type << 24));
202 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
210 NBDEBUG("[%s]\n", cp);
213 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
224 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
229 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
234 so->so_upcallarg = (caddr_t)nbp;
235 so->so_upcall = nb_upcall;
236 so->so_rcv.sb_flags |= SB_UPCALL;
237 so->so_rcv.sb_timeo = (5 * hz);
238 so->so_snd.sb_timeo = (5 * hz);
239 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
242 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
243 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
244 so->so_rcv.sb_flags &= ~SB_NOINTR;
245 so->so_snd.sb_flags &= ~SB_NOINTR;
246 error = soconnect(so, (struct sockaddr*)to, td);
250 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
251 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
252 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
253 (error = nb_intr(nbp, td->td_proc)) != 0) {
254 so->so_state &= ~SS_ISCONNECTING;
260 error = so->so_error;
268 smb_nbst_disconnect(nbp->nbp_vc, td);
273 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
275 struct mbchain mb, *mbp = &mb;
276 struct mdchain md, *mdp = &md;
279 struct sockaddr_in sin;
284 error = mb_init(mbp);
287 mb_put_uint32le(mbp, 0);
288 nb_put_name(mbp, nbp->nbp_paddr);
289 nb_put_name(mbp, nbp->nbp_laddr);
290 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
291 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
293 nbp->nbp_state = NBST_RQSENT;
299 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
300 error = nbssn_rselect(nbp, &tv, POLLIN, td);
301 if (error == EWOULDBLOCK) { /* Timeout */
302 NBDEBUG("initial request timeout\n");
305 if (error) /* restart or interrupt */
307 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
309 NBDEBUG("recv() error %d\n", error);
313 * Process NETBIOS reply
319 if (rpcode == NB_SSN_POSRESP) {
320 nbp->nbp_state = NBST_SESSION;
321 nbp->nbp_flags |= NBF_CONNECTED;
324 if (rpcode != NB_SSN_RTGRESP) {
325 error = ECONNABORTED;
329 error = ECONNABORTED;
332 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
333 md_get_uint16(mdp, &port);
335 nbp->nbp_state = NBST_RETARGET;
336 smb_nbst_disconnect(nbp->nbp_vc, td);
337 error = nb_connect_in(nbp, &sin, td);
339 error = nbssn_rq_request(nbp, td);
341 smb_nbst_disconnect(nbp->nbp_vc, td);
351 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
352 u_int8_t *rpcodep, int flags, struct thread *td)
354 struct socket *so = nbp->nbp_tso;
360 aio.iov_base = (caddr_t)&len;
361 aio.iov_len = sizeof(len);
364 auio.uio_segflg = UIO_SYSSPACE;
365 auio.uio_rw = UIO_READ;
367 auio.uio_resid = sizeof(len);
369 error = so->so_proto->pr_usrreqs->pru_soreceive
370 (so, (struct sockaddr **)NULL, &auio,
371 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
374 if (auio.uio_resid > 0) {
375 SMBSDEBUG("short reply\n");
379 *rpcodep = (len >> 24) & 0xFF;
381 if (len > SMB_MAXPKTLEN) {
382 SMBERROR("packet too long (%d)\n", len);
390 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
391 u_int8_t *rpcodep, struct thread *td)
393 struct socket *so = nbp->nbp_tso;
407 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
409 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
410 nbp->nbp_state = NBST_CLOSED;
411 NBDEBUG("session closed by peer\n");
416 if (len == 0 && nbp->nbp_state != NBST_SESSION)
418 if (rpcode == NB_SSN_KEEPALIVE)
420 bzero(&auio, sizeof(auio));
421 auio.uio_resid = len;
424 rcvflg = MSG_WAITALL;
425 error = so->so_proto->pr_usrreqs->pru_soreceive
426 (so, (struct sockaddr **)NULL,
427 &auio, &m, (struct mbuf **)NULL, &rcvflg);
428 } while (error == EWOULDBLOCK || error == EINTR ||
432 if (auio.uio_resid > 0) {
433 SMBERROR("packet is shorter than expected\n");
437 if (nbp->nbp_state == NBST_SESSION &&
438 rpcode == NB_SSN_MESSAGE)
440 NBDEBUG("non-session packet %x\n", rpcode);
459 * SMB transport interface
462 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
466 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
467 bzero(nbp, sizeof *nbp);
468 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
469 nbp->nbp_state = NBST_CLOSED;
471 nbp->nbp_sndbuf = smb_tcpsndbuf;
472 nbp->nbp_rcvbuf = smb_tcprcvbuf;
478 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
480 struct nbpcb *nbp = vcp->vc_tdata;
484 smb_nbst_disconnect(vcp, td);
486 free(nbp->nbp_laddr, M_SONAME);
488 free(nbp->nbp_paddr, M_SONAME);
494 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
496 struct nbpcb *nbp = vcp->vc_tdata;
497 struct sockaddr_nb *snb;
503 if (nbp->nbp_flags & NBF_LOCADDR)
506 * It is possible to create NETBIOS name in the kernel,
507 * but nothing prevents us to do it in the user space.
512 if (slen < NB_MINSALEN)
514 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
519 nbp->nbp_laddr = snb;
520 nbp->nbp_flags |= NBF_LOCADDR;
527 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
529 struct nbpcb *nbp = vcp->vc_tdata;
530 struct sockaddr_in sin;
531 struct sockaddr_nb *snb;
532 struct timespec ts1, ts2;
536 if (nbp->nbp_tso != NULL)
538 if (nbp->nbp_laddr == NULL)
541 if (slen < NB_MINSALEN)
543 if (nbp->nbp_paddr) {
544 free(nbp->nbp_paddr, M_SONAME);
545 nbp->nbp_paddr = NULL;
547 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
550 nbp->nbp_paddr = snb;
551 sin = snb->snb_addrin;
553 error = nb_connect_in(nbp, &sin, td);
557 timespecsub(&ts2, &ts1);
558 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
561 timespecadd(&nbp->nbp_timo, &ts2);
562 timespecadd(&nbp->nbp_timo, &ts2);
563 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
564 error = nbssn_rq_request(nbp, td);
566 smb_nbst_disconnect(vcp, td);
571 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
573 struct nbpcb *nbp = vcp->vc_tdata;
576 if (nbp == NULL || nbp->nbp_tso == NULL)
578 if ((so = nbp->nbp_tso) != NULL) {
579 nbp->nbp_flags &= ~NBF_CONNECTED;
580 nbp->nbp_tso = (struct socket *)NULL;
584 if (nbp->nbp_state != NBST_RETARGET) {
585 nbp->nbp_state = NBST_CLOSED;
591 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
593 struct nbpcb *nbp = vcp->vc_tdata;
596 if (nbp->nbp_state != NBST_SESSION) {
600 M_PREPEND(m0, 4, M_WAITOK);
603 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
604 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
614 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
616 struct nbpcb *nbp = vcp->vc_tdata;
620 nbp->nbp_flags |= NBF_RECVLOCK;
621 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
622 nbp->nbp_flags &= ~NBF_RECVLOCK;
627 smb_nbst_timo(struct smb_vc *vcp)
633 smb_nbst_intr(struct smb_vc *vcp)
635 struct nbpcb *nbp = vcp->vc_tdata;
637 if (nbp == NULL || nbp->nbp_tso == NULL)
639 sorwakeup(nbp->nbp_tso);
640 sowwakeup(nbp->nbp_tso);
644 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
646 struct nbpcb *nbp = vcp->vc_tdata;
650 *(int*)data = nbp->nbp_sndbuf;
653 *(int*)data = nbp->nbp_rcvbuf;
656 *(struct timespec*)data = nbp->nbp_timo;
665 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
667 struct nbpcb *nbp = vcp->vc_tdata;
671 nbp->nbp_selectid = data;
680 * Check for fatal errors
683 smb_nbst_fatal(struct smb_vc *vcp, int error)
695 struct smb_tran_desc smb_tran_nbtcp_desc = {
697 smb_nbst_create, smb_nbst_done,
698 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
699 smb_nbst_send, smb_nbst_recv,
700 smb_nbst_timo, smb_nbst_intr,
701 smb_nbst_getparam, smb_nbst_setparam,