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 1.14 2006/05/06 02:43:13 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>
49 #include <sys/thread2.h>
52 #include <net/route.h>
54 #include <netinet/in.h>
55 #include <netinet/tcp.h>
57 #include <sys/mchain.h>
64 #include "smb_trantcp.h"
67 #define M_NBDATA M_PCB
69 static int smb_tcpsndbuf = 10 * 1024;
70 static int smb_tcprcvbuf = 10 * 1024;
72 SYSCTL_DECL(_net_smb);
73 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
74 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
76 #define nb_sosend(so,m,flags,p) \
77 so_pru_sosend(so, NULL, NULL, m, NULL, flags, td)
79 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
80 u_int8_t *rpcodep, struct thread *td);
81 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
84 nb_setsockopt_int(struct socket *so, int level, int name, int val)
88 bzero(&sopt, sizeof(sopt));
89 sopt.sopt_level = level;
90 sopt.sopt_name = name;
92 sopt.sopt_valsize = sizeof(val);
93 return sosetopt(so, &sopt);
97 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
99 return so_pru_sopoll(nbp->nbp_tso, events, NULL);
103 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct thread *td)
105 struct proc *p = td->td_proc;
106 struct timeval atv, rtv, ttv;
111 if (itimerfix(&atv)) {
115 getmicrouptime(&rtv);
116 timevaladd(&atv, &rtv);
121 p->p_flag |= P_SELECT;
122 error = nb_poll(nbp, events, td);
128 getmicrouptime(&rtv);
129 if (timevalcmp(&rtv, &atv, >=))
132 timevalsub(&ttv, &rtv);
133 timo = tvtohz_high(&ttv);
136 if ((p->p_flag & P_SELECT) == 0) {
140 p->p_flag &= ~P_SELECT;
141 error = tsleep((caddr_t)&selwait, 0, "nbsel", timo);
144 p->p_flag &= ~P_SELECT;
145 if (error == ERESTART)
151 nb_intr(struct nbpcb *nbp, struct thread *td)
157 nb_upcall(struct socket *so, void *arg, int waitflag)
159 struct nbpcb *nbp = arg;
161 if (arg == NULL || nbp->nbp_selectid == NULL)
163 wakeup(nbp->nbp_selectid);
167 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
169 u_int32_t *p = mtod(m, u_int32_t *);
171 *p = htonl((len & 0x1FFFF) | (type << 24));
176 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
184 NBDEBUG("[%s]\n", cp);
187 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
198 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
203 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
207 so->so_upcallarg = (caddr_t)nbp;
208 so->so_upcall = nb_upcall;
209 so->so_rcv.sb_flags |= SB_UPCALL;
210 so->so_rcv.sb_timeo = (5 * hz);
211 so->so_snd.sb_timeo = (5 * hz);
212 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf,
213 &td->td_proc->p_rlimit[RLIMIT_SBSIZE]);
216 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
217 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
218 so->so_rcv.sb_flags &= ~SB_NOINTR;
219 so->so_snd.sb_flags &= ~SB_NOINTR;
220 error = soconnect(so, (struct sockaddr*)to, td);
223 * If signals are allowed nbssn_recv() can wind up in a hard loop
226 so->so_rcv.sb_flags |= SB_NOINTR;
227 so->so_snd.sb_flags |= SB_NOINTR;
231 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
232 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
233 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
234 (error = nb_intr(nbp, td)) != 0) {
235 so->so_state &= ~SS_ISCONNECTING;
241 error = so->so_error;
249 smb_nbst_disconnect(nbp->nbp_vc, td);
254 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
256 struct mbchain mb, *mbp = &mb;
257 struct mdchain md, *mdp = &md;
260 struct sockaddr_in sin;
265 error = mb_init(mbp);
268 mb_put_uint32le(mbp, 0);
269 nb_put_name(mbp, nbp->nbp_paddr);
270 nb_put_name(mbp, nbp->nbp_laddr);
271 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
272 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
274 nbp->nbp_state = NBST_RQSENT;
280 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
281 error = nbssn_rselect(nbp, &tv, POLLIN, td);
282 if (error == EWOULDBLOCK) { /* Timeout */
283 NBDEBUG("initial request timeout\n");
286 if (error) /* restart or interrupt */
288 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
290 NBDEBUG("recv() error %d\n", error);
294 * Process NETBIOS reply
300 if (rpcode == NB_SSN_POSRESP) {
301 nbp->nbp_state = NBST_SESSION;
302 nbp->nbp_flags |= NBF_CONNECTED;
305 if (rpcode != NB_SSN_RTGRESP) {
306 error = ECONNABORTED;
310 error = ECONNABORTED;
313 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
314 md_get_uint16(mdp, &port);
316 nbp->nbp_state = NBST_RETARGET;
317 smb_nbst_disconnect(nbp->nbp_vc, td);
318 error = nb_connect_in(nbp, &sin, td);
320 error = nbssn_rq_request(nbp, td);
322 smb_nbst_disconnect(nbp->nbp_vc, td);
332 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
333 u_int8_t *rpcodep, int flags, struct thread *td)
335 struct socket *so = nbp->nbp_tso;
341 aio.iov_base = (caddr_t)&len;
342 aio.iov_len = sizeof(len);
345 auio.uio_segflg = UIO_SYSSPACE;
346 auio.uio_rw = UIO_READ;
348 auio.uio_resid = sizeof(len);
350 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
353 if (auio.uio_resid > 0) {
354 SMBSDEBUG("short reply\n");
358 *rpcodep = (len >> 24) & 0xFF;
360 if (len > SMB_MAXPKTLEN) {
361 SMBERROR("packet too long (%d)\n", len);
369 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
370 u_int8_t *rpcodep, struct thread *td)
372 struct socket *so = nbp->nbp_tso;
386 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
388 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
389 nbp->nbp_state = NBST_CLOSED;
390 NBDEBUG("session closed by peer\n");
395 if (len == 0 && nbp->nbp_state != NBST_SESSION)
397 if (rpcode == NB_SSN_KEEPALIVE)
399 bzero(&auio, sizeof(auio));
400 auio.uio_resid = len;
403 rcvflg = MSG_WAITALL;
404 error = so_pru_soreceive(so, NULL, &auio, &m, NULL,
406 } while (error == EWOULDBLOCK || error == EINTR ||
410 if (auio.uio_resid > 0) {
411 SMBERROR("packet is shorter than expected\n");
415 if (nbp->nbp_state == NBST_SESSION &&
416 rpcode == NB_SSN_MESSAGE)
418 NBDEBUG("non-session packet %x\n", rpcode);
437 * SMB transport interface
440 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
444 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
445 bzero(nbp, sizeof *nbp);
446 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
447 nbp->nbp_state = NBST_CLOSED;
449 nbp->nbp_sndbuf = smb_tcpsndbuf;
450 nbp->nbp_rcvbuf = smb_tcprcvbuf;
456 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
458 struct nbpcb *nbp = vcp->vc_tdata;
462 smb_nbst_disconnect(vcp, td);
464 free(nbp->nbp_laddr, M_SONAME);
466 free(nbp->nbp_paddr, M_SONAME);
472 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
474 struct nbpcb *nbp = vcp->vc_tdata;
475 struct sockaddr_nb *snb;
481 if (nbp->nbp_flags & NBF_LOCADDR)
484 * It is possible to create NETBIOS name in the kernel,
485 * but nothing prevents us to do it in the user space.
490 if (slen < NB_MINSALEN)
492 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
497 nbp->nbp_laddr = snb;
498 nbp->nbp_flags |= NBF_LOCADDR;
505 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
507 struct nbpcb *nbp = vcp->vc_tdata;
508 struct sockaddr_in sin;
509 struct sockaddr_nb *snb;
510 struct timespec ts1, ts2;
514 if (nbp->nbp_tso != NULL)
516 if (nbp->nbp_laddr == NULL)
519 if (slen < NB_MINSALEN)
521 if (nbp->nbp_paddr) {
522 free(nbp->nbp_paddr, M_SONAME);
523 nbp->nbp_paddr = NULL;
525 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
528 nbp->nbp_paddr = snb;
529 sin = snb->snb_addrin;
531 error = nb_connect_in(nbp, &sin, td);
535 timespecsub(&ts2, &ts1);
536 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
539 timespecadd(&nbp->nbp_timo, &ts2);
540 timespecadd(&nbp->nbp_timo, &ts2);
541 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
542 error = nbssn_rq_request(nbp, td);
544 smb_nbst_disconnect(vcp, td);
549 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
551 struct nbpcb *nbp = vcp->vc_tdata;
554 if (nbp == NULL || nbp->nbp_tso == NULL)
556 if ((so = nbp->nbp_tso) != NULL) {
557 nbp->nbp_flags &= ~NBF_CONNECTED;
558 nbp->nbp_tso = (struct socket *)NULL;
562 if (nbp->nbp_state != NBST_RETARGET) {
563 nbp->nbp_state = NBST_CLOSED;
569 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
571 struct nbpcb *nbp = vcp->vc_tdata;
574 if (nbp->nbp_state != NBST_SESSION) {
578 M_PREPEND(m0, 4, MB_TRYWAIT);
581 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
582 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
592 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
594 struct nbpcb *nbp = vcp->vc_tdata;
598 nbp->nbp_flags |= NBF_RECVLOCK;
599 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
600 nbp->nbp_flags &= ~NBF_RECVLOCK;
605 smb_nbst_timo(struct smb_vc *vcp)
611 smb_nbst_intr(struct smb_vc *vcp)
613 struct nbpcb *nbp = vcp->vc_tdata;
615 if (nbp == NULL || nbp->nbp_tso == NULL)
617 sorwakeup(nbp->nbp_tso);
618 sowwakeup(nbp->nbp_tso);
622 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
624 struct nbpcb *nbp = vcp->vc_tdata;
628 *(int*)data = nbp->nbp_sndbuf;
631 *(int*)data = nbp->nbp_rcvbuf;
634 *(struct timespec*)data = nbp->nbp_timo;
643 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
645 struct nbpcb *nbp = vcp->vc_tdata;
649 nbp->nbp_selectid = data;
658 * Check for fatal errors
661 smb_nbst_fatal(struct smb_vc *vcp, int error)
673 struct smb_tran_desc smb_tran_nbtcp_desc = {
675 smb_nbst_create, smb_nbst_done,
676 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
677 smb_nbst_send, smb_nbst_recv,
678 smb_nbst_timo, smb_nbst_intr,
679 smb_nbst_getparam, smb_nbst_setparam,