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 1.11 2004/06/06 19:16:14 dillon 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/sysctl.h>
51 #include <net/route.h>
53 #include <netinet/in.h>
54 #include <netinet/tcp.h>
56 #include <sys/mchain.h>
63 #include "smb_trantcp.h"
66 #define M_NBDATA M_PCB
68 static int smb_tcpsndbuf = 10 * 1024;
69 static int smb_tcprcvbuf = 10 * 1024;
71 SYSCTL_DECL(_net_smb);
72 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
73 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
75 #define nb_sosend(so,m,flags,p) \
76 so_pru_sosend(so, NULL, NULL, m, NULL, flags, td)
78 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
79 u_int8_t *rpcodep, struct thread *td);
80 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
83 nb_setsockopt_int(struct socket *so, int level, int name, int val)
87 bzero(&sopt, sizeof(sopt));
88 sopt.sopt_level = level;
89 sopt.sopt_name = name;
91 sopt.sopt_valsize = sizeof(val);
92 return sosetopt(so, &sopt);
96 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
98 return so_pru_sopoll(nbp->nbp_tso, events, NULL, td);
102 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct thread *td)
104 struct proc *p = td->td_proc;
105 struct timeval atv, rtv, ttv;
110 if (itimerfix(&atv)) {
114 getmicrouptime(&rtv);
115 timevaladd(&atv, &rtv);
120 p->p_flag |= P_SELECT;
121 error = nb_poll(nbp, events, td);
127 getmicrouptime(&rtv);
128 if (timevalcmp(&rtv, &atv, >=))
131 timevalsub(&ttv, &rtv);
132 timo = tvtohz_high(&ttv);
135 if ((p->p_flag & P_SELECT) == 0) {
139 p->p_flag &= ~P_SELECT;
140 error = tsleep((caddr_t)&selwait, 0, "nbsel", timo);
143 p->p_flag &= ~P_SELECT;
144 if (error == ERESTART)
150 nb_intr(struct nbpcb *nbp, struct thread *td)
156 nb_upcall(struct socket *so, void *arg, int waitflag)
158 struct nbpcb *nbp = arg;
160 if (arg == NULL || nbp->nbp_selectid == NULL)
162 wakeup(nbp->nbp_selectid);
166 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
168 u_int32_t *p = mtod(m, u_int32_t *);
170 *p = htonl((len & 0x1FFFF) | (type << 24));
175 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
183 NBDEBUG("[%s]\n", cp);
186 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
197 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
202 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
206 so->so_upcallarg = (caddr_t)nbp;
207 so->so_upcall = nb_upcall;
208 so->so_rcv.sb_flags |= SB_UPCALL;
209 so->so_rcv.sb_timeo = (5 * hz);
210 so->so_snd.sb_timeo = (5 * hz);
211 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf,
212 &td->td_proc->p_rlimit[RLIMIT_SBSIZE]);
215 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
216 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
217 so->so_rcv.sb_flags &= ~SB_NOINTR;
218 so->so_snd.sb_flags &= ~SB_NOINTR;
219 error = soconnect(so, (struct sockaddr*)to, td);
223 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
224 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
225 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
226 (error = nb_intr(nbp, td)) != 0) {
227 so->so_state &= ~SS_ISCONNECTING;
233 error = so->so_error;
241 smb_nbst_disconnect(nbp->nbp_vc, td);
246 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
248 struct mbchain mb, *mbp = &mb;
249 struct mdchain md, *mdp = &md;
252 struct sockaddr_in sin;
257 error = mb_init(mbp);
260 mb_put_uint32le(mbp, 0);
261 nb_put_name(mbp, nbp->nbp_paddr);
262 nb_put_name(mbp, nbp->nbp_laddr);
263 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
264 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
266 nbp->nbp_state = NBST_RQSENT;
272 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
273 error = nbssn_rselect(nbp, &tv, POLLIN, td);
274 if (error == EWOULDBLOCK) { /* Timeout */
275 NBDEBUG("initial request timeout\n");
278 if (error) /* restart or interrupt */
280 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
282 NBDEBUG("recv() error %d\n", error);
286 * Process NETBIOS reply
292 if (rpcode == NB_SSN_POSRESP) {
293 nbp->nbp_state = NBST_SESSION;
294 nbp->nbp_flags |= NBF_CONNECTED;
297 if (rpcode != NB_SSN_RTGRESP) {
298 error = ECONNABORTED;
302 error = ECONNABORTED;
305 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
306 md_get_uint16(mdp, &port);
308 nbp->nbp_state = NBST_RETARGET;
309 smb_nbst_disconnect(nbp->nbp_vc, td);
310 error = nb_connect_in(nbp, &sin, td);
312 error = nbssn_rq_request(nbp, td);
314 smb_nbst_disconnect(nbp->nbp_vc, td);
324 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
325 u_int8_t *rpcodep, int flags, struct thread *td)
327 struct socket *so = nbp->nbp_tso;
333 aio.iov_base = (caddr_t)&len;
334 aio.iov_len = sizeof(len);
337 auio.uio_segflg = UIO_SYSSPACE;
338 auio.uio_rw = UIO_READ;
340 auio.uio_resid = sizeof(len);
342 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
345 if (auio.uio_resid > 0) {
346 SMBSDEBUG("short reply\n");
350 *rpcodep = (len >> 24) & 0xFF;
352 if (len > SMB_MAXPKTLEN) {
353 SMBERROR("packet too long (%d)\n", len);
361 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
362 u_int8_t *rpcodep, struct thread *td)
364 struct socket *so = nbp->nbp_tso;
378 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
380 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
381 nbp->nbp_state = NBST_CLOSED;
382 NBDEBUG("session closed by peer\n");
387 if (len == 0 && nbp->nbp_state != NBST_SESSION)
389 if (rpcode == NB_SSN_KEEPALIVE)
391 bzero(&auio, sizeof(auio));
392 auio.uio_resid = len;
395 rcvflg = MSG_WAITALL;
396 error = so_pru_soreceive(so, NULL, &auio, &m, NULL,
398 } while (error == EWOULDBLOCK || error == EINTR ||
402 if (auio.uio_resid > 0) {
403 SMBERROR("packet is shorter than expected\n");
407 if (nbp->nbp_state == NBST_SESSION &&
408 rpcode == NB_SSN_MESSAGE)
410 NBDEBUG("non-session packet %x\n", rpcode);
429 * SMB transport interface
432 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
436 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
437 bzero(nbp, sizeof *nbp);
438 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
439 nbp->nbp_state = NBST_CLOSED;
441 nbp->nbp_sndbuf = smb_tcpsndbuf;
442 nbp->nbp_rcvbuf = smb_tcprcvbuf;
448 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
450 struct nbpcb *nbp = vcp->vc_tdata;
454 smb_nbst_disconnect(vcp, td);
456 free(nbp->nbp_laddr, M_SONAME);
458 free(nbp->nbp_paddr, M_SONAME);
464 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
466 struct nbpcb *nbp = vcp->vc_tdata;
467 struct sockaddr_nb *snb;
473 if (nbp->nbp_flags & NBF_LOCADDR)
476 * It is possible to create NETBIOS name in the kernel,
477 * but nothing prevents us to do it in the user space.
482 if (slen < NB_MINSALEN)
484 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
489 nbp->nbp_laddr = snb;
490 nbp->nbp_flags |= NBF_LOCADDR;
497 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
499 struct nbpcb *nbp = vcp->vc_tdata;
500 struct sockaddr_in sin;
501 struct sockaddr_nb *snb;
502 struct timespec ts1, ts2;
506 if (nbp->nbp_tso != NULL)
508 if (nbp->nbp_laddr == NULL)
511 if (slen < NB_MINSALEN)
513 if (nbp->nbp_paddr) {
514 free(nbp->nbp_paddr, M_SONAME);
515 nbp->nbp_paddr = NULL;
517 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
520 nbp->nbp_paddr = snb;
521 sin = snb->snb_addrin;
523 error = nb_connect_in(nbp, &sin, td);
527 timespecsub(&ts2, &ts1);
528 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
531 timespecadd(&nbp->nbp_timo, &ts2);
532 timespecadd(&nbp->nbp_timo, &ts2);
533 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
534 error = nbssn_rq_request(nbp, td);
536 smb_nbst_disconnect(vcp, td);
541 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
543 struct nbpcb *nbp = vcp->vc_tdata;
546 if (nbp == NULL || nbp->nbp_tso == NULL)
548 if ((so = nbp->nbp_tso) != NULL) {
549 nbp->nbp_flags &= ~NBF_CONNECTED;
550 nbp->nbp_tso = (struct socket *)NULL;
554 if (nbp->nbp_state != NBST_RETARGET) {
555 nbp->nbp_state = NBST_CLOSED;
561 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
563 struct nbpcb *nbp = vcp->vc_tdata;
566 if (nbp->nbp_state != NBST_SESSION) {
570 M_PREPEND(m0, 4, MB_TRYWAIT);
573 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
574 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
584 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
586 struct nbpcb *nbp = vcp->vc_tdata;
590 nbp->nbp_flags |= NBF_RECVLOCK;
591 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
592 nbp->nbp_flags &= ~NBF_RECVLOCK;
597 smb_nbst_timo(struct smb_vc *vcp)
603 smb_nbst_intr(struct smb_vc *vcp)
605 struct nbpcb *nbp = vcp->vc_tdata;
607 if (nbp == NULL || nbp->nbp_tso == NULL)
609 sorwakeup(nbp->nbp_tso);
610 sowwakeup(nbp->nbp_tso);
614 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
616 struct nbpcb *nbp = vcp->vc_tdata;
620 *(int*)data = nbp->nbp_sndbuf;
623 *(int*)data = nbp->nbp_rcvbuf;
626 *(struct timespec*)data = nbp->nbp_timo;
635 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
637 struct nbpcb *nbp = vcp->vc_tdata;
641 nbp->nbp_selectid = data;
650 * Check for fatal errors
653 smb_nbst_fatal(struct smb_vc *vcp, int error)
665 struct smb_tran_desc smb_tran_nbtcp_desc = {
667 smb_nbst_create, smb_nbst_done,
668 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
669 smb_nbst_send, smb_nbst_recv,
670 smb_nbst_timo, smb_nbst_intr,
671 smb_nbst_getparam, smb_nbst_setparam,