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);
115 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
117 u_int32_t *p = mtod(m, u_int32_t *);
119 *p = htonl((len & 0x1FFFF) | (type << 24));
124 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
132 NBDEBUG("[%s]\n", cp);
135 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
146 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
151 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
156 SOCKBUF_LOCK(&so->so_rcv);
157 soupcall_set(so, SO_RCV, nb_upcall, nbp);
158 SOCKBUF_UNLOCK(&so->so_rcv);
159 so->so_rcv.sb_timeo = (5 * hz);
160 so->so_snd.sb_timeo = (5 * hz);
161 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
164 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
165 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
166 SOCKBUF_LOCK(&so->so_rcv);
167 so->so_rcv.sb_flags &= ~SB_NOINTR;
168 SOCKBUF_UNLOCK(&so->so_rcv);
169 SOCKBUF_LOCK(&so->so_snd);
170 so->so_snd.sb_flags &= ~SB_NOINTR;
171 SOCKBUF_UNLOCK(&so->so_snd);
172 error = soconnect(so, (struct sockaddr*)to, td);
176 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
177 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
178 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
179 (error = nb_intr(nbp, td->td_proc)) != 0) {
180 so->so_state &= ~SS_ISCONNECTING;
186 error = so->so_error;
194 smb_nbst_disconnect(nbp->nbp_vc, td);
199 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
201 struct mbchain mb, *mbp = &mb;
202 struct mdchain md, *mdp = &md;
205 struct sockaddr_in sin;
210 error = mb_init(mbp);
213 mb_put_uint32le(mbp, 0);
214 nb_put_name(mbp, nbp->nbp_paddr);
215 nb_put_name(mbp, nbp->nbp_laddr);
216 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
217 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
219 nbp->nbp_state = NBST_RQSENT;
225 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
226 error = selsocket(nbp->nbp_tso, POLLIN, &tv, td);
227 if (error == EWOULDBLOCK) { /* Timeout */
228 NBDEBUG("initial request timeout\n");
231 if (error) /* restart or interrupt */
233 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
235 NBDEBUG("recv() error %d\n", error);
239 * Process NETBIOS reply
245 if (rpcode == NB_SSN_POSRESP) {
246 nbp->nbp_state = NBST_SESSION;
247 nbp->nbp_flags |= NBF_CONNECTED;
250 if (rpcode != NB_SSN_RTGRESP) {
251 error = ECONNABORTED;
255 error = ECONNABORTED;
258 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
259 md_get_uint16(mdp, &port);
261 nbp->nbp_state = NBST_RETARGET;
262 smb_nbst_disconnect(nbp->nbp_vc, td);
263 error = nb_connect_in(nbp, &sin, td);
265 error = nbssn_rq_request(nbp, td);
267 smb_nbst_disconnect(nbp->nbp_vc, td);
277 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
278 u_int8_t *rpcodep, int flags, struct thread *td)
280 struct socket *so = nbp->nbp_tso;
286 aio.iov_base = (caddr_t)&len;
287 aio.iov_len = sizeof(len);
290 auio.uio_segflg = UIO_SYSSPACE;
291 auio.uio_rw = UIO_READ;
293 auio.uio_resid = sizeof(len);
295 error = soreceive(so, (struct sockaddr **)NULL, &auio,
296 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
299 if (auio.uio_resid > 0) {
300 SMBSDEBUG("short reply\n");
304 *rpcodep = (len >> 24) & 0xFF;
306 if (len > SMB_MAXPKTLEN) {
307 SMBERROR("packet too long (%d)\n", len);
315 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
316 u_int8_t *rpcodep, struct thread *td)
318 struct socket *so = nbp->nbp_tso;
320 struct mbuf *m, *tm, *im;
333 * Poll for a response header.
334 * If we don't have one waiting, return.
338 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
339 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
340 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
341 nbp->nbp_state = NBST_CLOSED;
342 NBDEBUG("session closed by peer\n");
347 if (len == 0 && nbp->nbp_state != NBST_SESSION)
349 /* no data, try again */
350 if (rpcode == NB_SSN_KEEPALIVE)
354 * Loop, blocking, for data following the response header.
356 * Note that we can't simply block here with MSG_WAITALL for the
357 * entire response size, as it may be larger than the TCP
358 * slow-start window that the sender employs. This will result
359 * in the sender stalling until the delayed ACK is sent, then
360 * resuming slow-start, resulting in very poor performance.
362 * Instead, we never request more than NB_SORECEIVE_CHUNK
363 * bytes at a time, resulting in an ack being pushed by
364 * the TCP code at the completion of each call.
369 rcvflg = MSG_WAITALL;
370 bzero(&auio, sizeof(auio));
371 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
373 resid -= auio.uio_resid;
375 * Spin until we have collected everything in
379 rcvflg = MSG_WAITALL;
380 error = soreceive(so, (struct sockaddr **)NULL,
381 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
382 } while (error == EWOULDBLOCK || error == EINTR ||
386 /* short return guarantees unhappiness */
387 if (auio.uio_resid > 0) {
388 SMBERROR("packet is shorter than expected\n");
392 /* append received chunk to previous chunk(s) */
397 * Just glue the new chain on the end.
398 * Consumer will pullup as required.
400 for (im = m; im->m_next != NULL; im = im->m_next)
405 /* got a session/message packet? */
406 if (nbp->nbp_state == NBST_SESSION &&
407 rpcode == NB_SSN_MESSAGE)
409 /* drop packet and try for another */
410 NBDEBUG("non-session packet %x\n", rpcode);
433 * SMB transport interface
436 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
440 nbp = malloc(sizeof *nbp, M_NBDATA, M_WAITOK);
441 bzero(nbp, sizeof *nbp);
442 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
443 nbp->nbp_state = NBST_CLOSED;
445 nbp->nbp_sndbuf = smb_tcpsndbuf;
446 nbp->nbp_rcvbuf = smb_tcprcvbuf;
452 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
454 struct nbpcb *nbp = vcp->vc_tdata;
458 smb_nbst_disconnect(vcp, td);
460 free(nbp->nbp_laddr, M_SONAME);
462 free(nbp->nbp_paddr, M_SONAME);
468 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
470 struct nbpcb *nbp = vcp->vc_tdata;
471 struct sockaddr_nb *snb;
477 if (nbp->nbp_flags & NBF_LOCADDR)
480 * It is possible to create NETBIOS name in the kernel,
481 * but nothing prevents us to do it in the user space.
486 if (slen < NB_MINSALEN)
488 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
493 nbp->nbp_laddr = snb;
494 nbp->nbp_flags |= NBF_LOCADDR;
501 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
503 struct nbpcb *nbp = vcp->vc_tdata;
504 struct sockaddr_in sin;
505 struct sockaddr_nb *snb;
506 struct timespec ts1, ts2;
510 if (nbp->nbp_tso != NULL)
512 if (nbp->nbp_laddr == NULL)
515 if (slen < NB_MINSALEN)
517 if (nbp->nbp_paddr) {
518 free(nbp->nbp_paddr, M_SONAME);
519 nbp->nbp_paddr = NULL;
521 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
524 nbp->nbp_paddr = snb;
525 sin = snb->snb_addrin;
527 error = nb_connect_in(nbp, &sin, td);
531 timespecsub(&ts2, &ts1);
532 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
535 timespecadd(&nbp->nbp_timo, &ts2);
536 timespecadd(&nbp->nbp_timo, &ts2);
537 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
538 error = nbssn_rq_request(nbp, td);
540 smb_nbst_disconnect(vcp, td);
545 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
547 struct nbpcb *nbp = vcp->vc_tdata;
550 if (nbp == NULL || nbp->nbp_tso == NULL)
552 if ((so = nbp->nbp_tso) != NULL) {
553 nbp->nbp_flags &= ~NBF_CONNECTED;
554 nbp->nbp_tso = (struct socket *)NULL;
558 if (nbp->nbp_state != NBST_RETARGET) {
559 nbp->nbp_state = NBST_CLOSED;
565 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
567 struct nbpcb *nbp = vcp->vc_tdata;
570 if (nbp->nbp_state != NBST_SESSION) {
574 M_PREPEND(m0, 4, M_WAIT);
575 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
576 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
586 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
588 struct nbpcb *nbp = vcp->vc_tdata;
592 nbp->nbp_flags |= NBF_RECVLOCK;
593 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
594 nbp->nbp_flags &= ~NBF_RECVLOCK;
599 smb_nbst_timo(struct smb_vc *vcp)
605 smb_nbst_intr(struct smb_vc *vcp)
607 struct nbpcb *nbp = vcp->vc_tdata;
609 if (nbp == NULL || nbp->nbp_tso == NULL)
611 sorwakeup(nbp->nbp_tso);
612 sowwakeup(nbp->nbp_tso);
616 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
618 struct nbpcb *nbp = vcp->vc_tdata;
622 *(int*)data = nbp->nbp_sndbuf;
625 *(int*)data = nbp->nbp_rcvbuf;
628 *(struct timespec*)data = nbp->nbp_timo;
637 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
639 struct nbpcb *nbp = vcp->vc_tdata;
643 nbp->nbp_selectid = data;
652 * Check for fatal errors
655 smb_nbst_fatal(struct smb_vc *vcp, int error)
667 struct smb_tran_desc smb_tran_nbtcp_desc = {
669 smb_nbst_create, smb_nbst_done,
670 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
671 smb_nbst_send, smb_nbst_recv,
672 smb_nbst_timo, smb_nbst_intr,
673 smb_nbst_getparam, smb_nbst_setparam,