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 1.21 2008/01/05 14:02:40 swildner 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/resourcevar.h>
43 #include <sys/socket.h>
44 #include <sys/socketvar.h>
45 #include <sys/socketops.h>
48 #include <sys/fcntl.h>
49 #include <sys/sysctl.h>
50 #include <sys/thread2.h>
53 #include <net/route.h>
55 #include <netinet/in.h>
56 #include <netinet/tcp.h>
58 #include <sys/mchain.h>
65 #include "smb_trantcp.h"
68 #define M_NBDATA M_PCB
70 static int smb_tcpsndbuf = 10 * 1024;
71 static int smb_tcprcvbuf = 10 * 1024;
73 SYSCTL_DECL(_net_smb);
74 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
75 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
77 #define nb_sosend(so,m,flags,p) \
78 so_pru_sosend(so, NULL, NULL, m, NULL, 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_poll(struct nbpcb *nbp, int events, struct thread *td)
100 return so_pru_sopoll(nbp->nbp_tso, events, NULL);
104 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct thread *td)
106 struct lwp *lp = td->td_lwp;
107 struct timeval atv, rtv, ttv;
112 if (itimerfix(&atv)) {
116 getmicrouptime(&rtv);
117 timevaladd(&atv, &rtv);
122 lp->lwp_flag |= LWP_SELECT;
123 error = nb_poll(nbp, events, td);
129 getmicrouptime(&rtv);
130 if (timevalcmp(&rtv, &atv, >=))
133 timevalsub(&ttv, &rtv);
134 timo = tvtohz_high(&ttv);
137 if ((lp->lwp_flag & LWP_SELECT) == 0) {
141 lp->lwp_flag &= ~LWP_SELECT;
142 error = tsleep((caddr_t)&selwait, 0, "nbsel", timo);
145 lp->lwp_flag &= ~LWP_SELECT;
146 if (error == ERESTART)
152 nb_intr(struct nbpcb *nbp, struct thread *td)
158 nb_upcall(struct socket *so, void *arg, int waitflag)
160 struct nbpcb *nbp = arg;
162 if (arg == NULL || nbp->nbp_selectid == NULL)
164 wakeup(nbp->nbp_selectid);
168 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
170 u_int32_t *p = mtod(m, u_int32_t *);
172 *p = htonl((len & 0x1FFFF) | (type << 24));
177 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
185 NBDEBUG("[%s]\n", cp);
188 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
199 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
204 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
208 so->so_upcallarg = (caddr_t)nbp;
209 so->so_upcall = nb_upcall;
210 so->so_rcv.ssb_flags |= SSB_UPCALL;
211 so->so_rcv.ssb_timeo = (5 * hz);
212 so->so_snd.ssb_timeo = (5 * hz);
213 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf,
214 &td->td_proc->p_rlimit[RLIMIT_SBSIZE]);
217 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
218 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
219 so->so_rcv.ssb_flags &= ~SSB_NOINTR;
220 so->so_snd.ssb_flags &= ~SSB_NOINTR;
221 error = soconnect(so, (struct sockaddr*)to, td);
224 * If signals are allowed nbssn_recv() can wind up in a hard loop
227 so->so_rcv.ssb_flags |= SSB_NOINTR;
228 so->so_snd.ssb_flags |= SSB_NOINTR;
232 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
233 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
234 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
235 (error = nb_intr(nbp, td)) != 0) {
236 so->so_state &= ~SS_ISCONNECTING;
242 error = so->so_error;
250 smb_nbst_disconnect(nbp->nbp_vc, td);
255 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
257 struct mbchain mb, *mbp = &mb;
258 struct mdchain md, *mdp = &md;
261 struct sockaddr_in sin;
266 error = mb_init(mbp);
269 mb_put_uint32le(mbp, 0);
270 nb_put_name(mbp, nbp->nbp_paddr);
271 nb_put_name(mbp, nbp->nbp_laddr);
272 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
273 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
275 nbp->nbp_state = NBST_RQSENT;
281 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
282 error = nbssn_rselect(nbp, &tv, POLLIN, td);
283 if (error == EWOULDBLOCK) { /* Timeout */
284 NBDEBUG("initial request timeout\n");
287 if (error) /* restart or interrupt */
289 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
291 NBDEBUG("recv() error %d\n", error);
295 * Process NETBIOS reply
301 if (rpcode == NB_SSN_POSRESP) {
302 nbp->nbp_state = NBST_SESSION;
303 nbp->nbp_flags |= NBF_CONNECTED;
306 if (rpcode != NB_SSN_RTGRESP) {
307 error = ECONNABORTED;
311 error = ECONNABORTED;
314 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
315 md_get_uint16(mdp, &port);
317 nbp->nbp_state = NBST_RETARGET;
318 smb_nbst_disconnect(nbp->nbp_vc, td);
319 error = nb_connect_in(nbp, &sin, td);
321 error = nbssn_rq_request(nbp, td);
323 smb_nbst_disconnect(nbp->nbp_vc, td);
333 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
334 u_int8_t *rpcodep, int flags, struct thread *td)
336 struct socket *so = nbp->nbp_tso;
342 aio.iov_base = (caddr_t)&len;
343 aio.iov_len = sizeof(len);
346 auio.uio_segflg = UIO_SYSSPACE;
347 auio.uio_rw = UIO_READ;
349 auio.uio_resid = sizeof(len);
351 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
354 if (auio.uio_resid > 0) {
355 SMBSDEBUG("short reply\n");
359 *rpcodep = (len >> 24) & 0xFF;
361 if (len > SMB_MAXPKTLEN) {
362 SMBERROR("packet too long (%d)\n", len);
370 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
371 u_int8_t *rpcodep, struct thread *td)
373 struct socket *so = nbp->nbp_tso;
387 error = nbssn_recvhdr(nbp, &savelen, &rpcode, MSG_DONTWAIT, td);
389 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
390 nbp->nbp_state = NBST_CLOSED;
391 NBDEBUG("session closed by peer\n");
397 if (savelen == 0 && nbp->nbp_state != NBST_SESSION)
399 if (rpcode == NB_SSN_KEEPALIVE)
402 sbinit(&sio, savelen);
403 rcvflg = MSG_WAITALL;
404 error = so_pru_soreceive(so, NULL, NULL, &sio,
406 } while (error == EWOULDBLOCK || error == EINTR ||
410 if (sio.sb_cc != savelen) {
411 SMBERROR("packet is shorter than expected\n");
416 if (nbp->nbp_state == NBST_SESSION && rpcode == NB_SSN_MESSAGE)
418 NBDEBUG("non-session packet %x\n", rpcode);
435 * SMB transport interface
438 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
442 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK | M_ZERO);
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 kfree(nbp->nbp_laddr, M_SONAME);
463 kfree(nbp->nbp_paddr, M_SONAME);
464 kfree(nbp, M_NBDATA);
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*)dup_sockaddr(sap);
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 kfree(nbp->nbp_paddr, M_SONAME);
520 nbp->nbp_paddr = NULL;
522 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
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;
556 soshutdown(so, SHUT_RDWR);
557 soclose(so, FNONBLOCK);
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, MB_TRYWAIT);
578 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
579 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
589 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
591 struct nbpcb *nbp = vcp->vc_tdata;
595 nbp->nbp_flags |= NBF_RECVLOCK;
596 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
597 nbp->nbp_flags &= ~NBF_RECVLOCK;
602 smb_nbst_timo(struct smb_vc *vcp)
608 smb_nbst_intr(struct smb_vc *vcp)
610 struct nbpcb *nbp = vcp->vc_tdata;
612 if (nbp == NULL || nbp->nbp_tso == NULL)
614 sorwakeup(nbp->nbp_tso);
615 sowwakeup(nbp->nbp_tso);
619 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
621 struct nbpcb *nbp = vcp->vc_tdata;
625 *(int*)data = nbp->nbp_sndbuf;
628 *(int*)data = nbp->nbp_rcvbuf;
631 *(struct timespec*)data = nbp->nbp_timo;
640 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
642 struct nbpcb *nbp = vcp->vc_tdata;
646 nbp->nbp_selectid = data;
655 * Check for fatal errors
658 smb_nbst_fatal(struct smb_vc *vcp, int error)
670 struct smb_tran_desc smb_tran_nbtcp_desc = {
672 smb_nbst_create, smb_nbst_done,
673 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
674 smb_nbst_send, smb_nbst_recv,
675 smb_nbst_timo, smb_nbst_intr,
676 smb_nbst_getparam, smb_nbst_setparam,