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
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/condvar.h>
38 #include <sys/kernel.h>
40 #include <sys/malloc.h>
44 #include <sys/protosw.h>
45 #include <sys/signalvar.h>
46 #include <sys/socket.h>
47 #include <sys/socketvar.h>
49 #include <sys/sysctl.h>
50 #include <sys/systm.h>
54 #include <net/route.h>
56 #include <netinet/in.h>
57 #include <netinet/tcp.h>
59 #include <sys/mchain.h>
61 #include <netsmb/netbios.h>
63 #include <netsmb/smb.h>
64 #include <netsmb/smb_conn.h>
65 #include <netsmb/smb_tran.h>
66 #include <netsmb/smb_trantcp.h>
67 #include <netsmb/smb_subr.h>
69 #define M_NBDATA M_PCB
71 static int smb_tcpsndbuf = NB_SNDQ - 1;
72 static int smb_tcprcvbuf = NB_RCVQ - 1;
74 SYSCTL_DECL(_net_smb);
75 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
76 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
78 #define nb_sosend(so,m,flags,td) sosend(so, NULL, 0, m, 0, flags, td)
80 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
81 u_int8_t *rpcodep, struct thread *td);
82 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
85 nb_setsockopt_int(struct socket *so, int level, int name, int val)
89 bzero(&sopt, sizeof(sopt));
90 sopt.sopt_level = level;
91 sopt.sopt_name = name;
93 sopt.sopt_valsize = sizeof(val);
94 return sosetopt(so, &sopt);
98 nb_intr(struct nbpcb *nbp, struct proc *p)
104 nb_upcall(struct socket *so, void *arg, int waitflag)
106 struct nbpcb *nbp = arg;
108 if (arg == NULL || nbp->nbp_selectid == NULL)
110 wakeup(nbp->nbp_selectid);
114 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
116 u_int32_t *p = mtod(m, u_int32_t *);
118 *p = htonl((len & 0x1FFFF) | (type << 24));
123 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
131 NBDEBUG("[%s]\n", cp);
134 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
145 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
150 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
155 so->so_upcallarg = (caddr_t)nbp;
156 so->so_upcall = nb_upcall;
157 SOCKBUF_LOCK(&so->so_rcv);
158 so->so_rcv.sb_flags |= SB_UPCALL;
159 SOCKBUF_UNLOCK(&so->so_rcv);
160 so->so_rcv.sb_timeo = (5 * hz);
161 so->so_snd.sb_timeo = (5 * hz);
162 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
165 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
166 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
167 SOCKBUF_LOCK(&so->so_rcv);
168 so->so_rcv.sb_flags &= ~SB_NOINTR;
169 SOCKBUF_UNLOCK(&so->so_rcv);
170 SOCKBUF_LOCK(&so->so_snd);
171 so->so_snd.sb_flags &= ~SB_NOINTR;
172 SOCKBUF_UNLOCK(&so->so_snd);
173 error = soconnect(so, (struct sockaddr*)to, td);
177 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
178 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
179 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
180 (error = nb_intr(nbp, td->td_proc)) != 0) {
181 so->so_state &= ~SS_ISCONNECTING;
187 error = so->so_error;
195 smb_nbst_disconnect(nbp->nbp_vc, td);
200 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
202 struct mbchain mb, *mbp = &mb;
203 struct mdchain md, *mdp = &md;
206 struct sockaddr_in sin;
211 error = mb_init(mbp);
214 mb_put_uint32le(mbp, 0);
215 nb_put_name(mbp, nbp->nbp_paddr);
216 nb_put_name(mbp, nbp->nbp_laddr);
217 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
218 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
220 nbp->nbp_state = NBST_RQSENT;
226 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
227 error = selsocket(nbp->nbp_tso, POLLIN, &tv, td);
228 if (error == EWOULDBLOCK) { /* Timeout */
229 NBDEBUG("initial request timeout\n");
232 if (error) /* restart or interrupt */
234 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
236 NBDEBUG("recv() error %d\n", error);
240 * Process NETBIOS reply
246 if (rpcode == NB_SSN_POSRESP) {
247 nbp->nbp_state = NBST_SESSION;
248 nbp->nbp_flags |= NBF_CONNECTED;
251 if (rpcode != NB_SSN_RTGRESP) {
252 error = ECONNABORTED;
256 error = ECONNABORTED;
259 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
260 md_get_uint16(mdp, &port);
262 nbp->nbp_state = NBST_RETARGET;
263 smb_nbst_disconnect(nbp->nbp_vc, td);
264 error = nb_connect_in(nbp, &sin, td);
266 error = nbssn_rq_request(nbp, td);
268 smb_nbst_disconnect(nbp->nbp_vc, td);
278 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
279 u_int8_t *rpcodep, int flags, struct thread *td)
281 struct socket *so = nbp->nbp_tso;
287 aio.iov_base = (caddr_t)&len;
288 aio.iov_len = sizeof(len);
291 auio.uio_segflg = UIO_SYSSPACE;
292 auio.uio_rw = UIO_READ;
294 auio.uio_resid = sizeof(len);
296 error = soreceive(so, (struct sockaddr **)NULL, &auio,
297 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
300 if (auio.uio_resid > 0) {
301 SMBSDEBUG("short reply\n");
305 *rpcodep = (len >> 24) & 0xFF;
307 if (len > SMB_MAXPKTLEN) {
308 SMBERROR("packet too long (%d)\n", len);
316 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
317 u_int8_t *rpcodep, struct thread *td)
319 struct socket *so = nbp->nbp_tso;
321 struct mbuf *m, *tm, *im;
334 * Poll for a response header.
335 * If we don't have one waiting, return.
339 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
340 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
341 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
342 nbp->nbp_state = NBST_CLOSED;
343 NBDEBUG("session closed by peer\n");
348 if (len == 0 && nbp->nbp_state != NBST_SESSION)
350 /* no data, try again */
351 if (rpcode == NB_SSN_KEEPALIVE)
355 * Loop, blocking, for data following the response header.
357 * Note that we can't simply block here with MSG_WAITALL for the
358 * entire response size, as it may be larger than the TCP
359 * slow-start window that the sender employs. This will result
360 * in the sender stalling until the delayed ACK is sent, then
361 * resuming slow-start, resulting in very poor performance.
363 * Instead, we never request more than NB_SORECEIVE_CHUNK
364 * bytes at a time, resulting in an ack being pushed by
365 * the TCP code at the completion of each call.
370 rcvflg = MSG_WAITALL;
371 bzero(&auio, sizeof(auio));
372 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
374 resid -= auio.uio_resid;
376 * Spin until we have collected everything in
380 rcvflg = MSG_WAITALL;
381 error = soreceive(so, (struct sockaddr **)NULL,
382 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
383 } while (error == EWOULDBLOCK || error == EINTR ||
387 /* short return guarantees unhappiness */
388 if (auio.uio_resid > 0) {
389 SMBERROR("packet is shorter than expected\n");
393 /* append received chunk to previous chunk(s) */
398 * Just glue the new chain on the end.
399 * Consumer will pullup as required.
401 for (im = m; im->m_next != NULL; im = im->m_next)
406 /* got a session/message packet? */
407 if (nbp->nbp_state == NBST_SESSION &&
408 rpcode == NB_SSN_MESSAGE)
410 /* drop packet and try for another */
411 NBDEBUG("non-session packet %x\n", rpcode);
434 * SMB transport interface
437 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
441 nbp = malloc(sizeof *nbp, M_NBDATA, M_WAITOK);
442 bzero(nbp, sizeof *nbp);
443 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
444 nbp->nbp_state = NBST_CLOSED;
446 nbp->nbp_sndbuf = smb_tcpsndbuf;
447 nbp->nbp_rcvbuf = smb_tcprcvbuf;
453 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
455 struct nbpcb *nbp = vcp->vc_tdata;
459 smb_nbst_disconnect(vcp, td);
461 free(nbp->nbp_laddr, M_SONAME);
463 free(nbp->nbp_paddr, M_SONAME);
469 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
471 struct nbpcb *nbp = vcp->vc_tdata;
472 struct sockaddr_nb *snb;
478 if (nbp->nbp_flags & NBF_LOCADDR)
481 * It is possible to create NETBIOS name in the kernel,
482 * but nothing prevents us to do it in the user space.
487 if (slen < NB_MINSALEN)
489 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
494 nbp->nbp_laddr = snb;
495 nbp->nbp_flags |= NBF_LOCADDR;
502 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
504 struct nbpcb *nbp = vcp->vc_tdata;
505 struct sockaddr_in sin;
506 struct sockaddr_nb *snb;
507 struct timespec ts1, ts2;
511 if (nbp->nbp_tso != NULL)
513 if (nbp->nbp_laddr == NULL)
516 if (slen < NB_MINSALEN)
518 if (nbp->nbp_paddr) {
519 free(nbp->nbp_paddr, M_SONAME);
520 nbp->nbp_paddr = NULL;
522 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
525 nbp->nbp_paddr = snb;
526 sin = snb->snb_addrin;
528 error = nb_connect_in(nbp, &sin, td);
532 timespecsub(&ts2, &ts1);
533 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
536 timespecadd(&nbp->nbp_timo, &ts2);
537 timespecadd(&nbp->nbp_timo, &ts2);
538 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
539 error = nbssn_rq_request(nbp, td);
541 smb_nbst_disconnect(vcp, td);
546 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
548 struct nbpcb *nbp = vcp->vc_tdata;
551 if (nbp == NULL || nbp->nbp_tso == NULL)
553 if ((so = nbp->nbp_tso) != NULL) {
554 nbp->nbp_flags &= ~NBF_CONNECTED;
555 nbp->nbp_tso = (struct socket *)NULL;
559 if (nbp->nbp_state != NBST_RETARGET) {
560 nbp->nbp_state = NBST_CLOSED;
566 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
568 struct nbpcb *nbp = vcp->vc_tdata;
571 if (nbp->nbp_state != NBST_SESSION) {
575 M_PREPEND(m0, 4, M_WAIT);
576 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
577 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
587 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
589 struct nbpcb *nbp = vcp->vc_tdata;
593 nbp->nbp_flags |= NBF_RECVLOCK;
594 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
595 nbp->nbp_flags &= ~NBF_RECVLOCK;
600 smb_nbst_timo(struct smb_vc *vcp)
606 smb_nbst_intr(struct smb_vc *vcp)
608 struct nbpcb *nbp = vcp->vc_tdata;
610 if (nbp == NULL || nbp->nbp_tso == NULL)
612 sorwakeup(nbp->nbp_tso);
613 sowwakeup(nbp->nbp_tso);
617 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
619 struct nbpcb *nbp = vcp->vc_tdata;
623 *(int*)data = nbp->nbp_sndbuf;
626 *(int*)data = nbp->nbp_rcvbuf;
629 *(struct timespec*)data = nbp->nbp_timo;
638 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
640 struct nbpcb *nbp = vcp->vc_tdata;
644 nbp->nbp_selectid = data;
653 * Check for fatal errors
656 smb_nbst_fatal(struct smb_vc *vcp, int error)
668 struct smb_tran_desc smb_tran_nbtcp_desc = {
670 smb_nbst_create, smb_nbst_done,
671 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
672 smb_nbst_send, smb_nbst_recv,
673 smb_nbst_timo, smb_nbst_intr,
674 smb_nbst_getparam, smb_nbst_setparam,