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 1.12 2005/06/10 22:44:02 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, td);
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);
224 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
225 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
226 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
227 (error = nb_intr(nbp, td)) != 0) {
228 so->so_state &= ~SS_ISCONNECTING;
234 error = so->so_error;
242 smb_nbst_disconnect(nbp->nbp_vc, td);
247 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
249 struct mbchain mb, *mbp = &mb;
250 struct mdchain md, *mdp = &md;
253 struct sockaddr_in sin;
258 error = mb_init(mbp);
261 mb_put_uint32le(mbp, 0);
262 nb_put_name(mbp, nbp->nbp_paddr);
263 nb_put_name(mbp, nbp->nbp_laddr);
264 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
265 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
267 nbp->nbp_state = NBST_RQSENT;
273 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
274 error = nbssn_rselect(nbp, &tv, POLLIN, td);
275 if (error == EWOULDBLOCK) { /* Timeout */
276 NBDEBUG("initial request timeout\n");
279 if (error) /* restart or interrupt */
281 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
283 NBDEBUG("recv() error %d\n", error);
287 * Process NETBIOS reply
293 if (rpcode == NB_SSN_POSRESP) {
294 nbp->nbp_state = NBST_SESSION;
295 nbp->nbp_flags |= NBF_CONNECTED;
298 if (rpcode != NB_SSN_RTGRESP) {
299 error = ECONNABORTED;
303 error = ECONNABORTED;
306 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
307 md_get_uint16(mdp, &port);
309 nbp->nbp_state = NBST_RETARGET;
310 smb_nbst_disconnect(nbp->nbp_vc, td);
311 error = nb_connect_in(nbp, &sin, td);
313 error = nbssn_rq_request(nbp, td);
315 smb_nbst_disconnect(nbp->nbp_vc, td);
325 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
326 u_int8_t *rpcodep, int flags, struct thread *td)
328 struct socket *so = nbp->nbp_tso;
334 aio.iov_base = (caddr_t)&len;
335 aio.iov_len = sizeof(len);
338 auio.uio_segflg = UIO_SYSSPACE;
339 auio.uio_rw = UIO_READ;
341 auio.uio_resid = sizeof(len);
343 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
346 if (auio.uio_resid > 0) {
347 SMBSDEBUG("short reply\n");
351 *rpcodep = (len >> 24) & 0xFF;
353 if (len > SMB_MAXPKTLEN) {
354 SMBERROR("packet too long (%d)\n", len);
362 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
363 u_int8_t *rpcodep, struct thread *td)
365 struct socket *so = nbp->nbp_tso;
379 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
381 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
382 nbp->nbp_state = NBST_CLOSED;
383 NBDEBUG("session closed by peer\n");
388 if (len == 0 && nbp->nbp_state != NBST_SESSION)
390 if (rpcode == NB_SSN_KEEPALIVE)
392 bzero(&auio, sizeof(auio));
393 auio.uio_resid = len;
396 rcvflg = MSG_WAITALL;
397 error = so_pru_soreceive(so, NULL, &auio, &m, NULL,
399 } while (error == EWOULDBLOCK || error == EINTR ||
403 if (auio.uio_resid > 0) {
404 SMBERROR("packet is shorter than expected\n");
408 if (nbp->nbp_state == NBST_SESSION &&
409 rpcode == NB_SSN_MESSAGE)
411 NBDEBUG("non-session packet %x\n", rpcode);
430 * SMB transport interface
433 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
437 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
438 bzero(nbp, sizeof *nbp);
439 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
440 nbp->nbp_state = NBST_CLOSED;
442 nbp->nbp_sndbuf = smb_tcpsndbuf;
443 nbp->nbp_rcvbuf = smb_tcprcvbuf;
449 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
451 struct nbpcb *nbp = vcp->vc_tdata;
455 smb_nbst_disconnect(vcp, td);
457 free(nbp->nbp_laddr, M_SONAME);
459 free(nbp->nbp_paddr, M_SONAME);
465 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
467 struct nbpcb *nbp = vcp->vc_tdata;
468 struct sockaddr_nb *snb;
474 if (nbp->nbp_flags & NBF_LOCADDR)
477 * It is possible to create NETBIOS name in the kernel,
478 * but nothing prevents us to do it in the user space.
483 if (slen < NB_MINSALEN)
485 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
490 nbp->nbp_laddr = snb;
491 nbp->nbp_flags |= NBF_LOCADDR;
498 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
500 struct nbpcb *nbp = vcp->vc_tdata;
501 struct sockaddr_in sin;
502 struct sockaddr_nb *snb;
503 struct timespec ts1, ts2;
507 if (nbp->nbp_tso != NULL)
509 if (nbp->nbp_laddr == NULL)
512 if (slen < NB_MINSALEN)
514 if (nbp->nbp_paddr) {
515 free(nbp->nbp_paddr, M_SONAME);
516 nbp->nbp_paddr = NULL;
518 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
521 nbp->nbp_paddr = snb;
522 sin = snb->snb_addrin;
524 error = nb_connect_in(nbp, &sin, td);
528 timespecsub(&ts2, &ts1);
529 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
532 timespecadd(&nbp->nbp_timo, &ts2);
533 timespecadd(&nbp->nbp_timo, &ts2);
534 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
535 error = nbssn_rq_request(nbp, td);
537 smb_nbst_disconnect(vcp, td);
542 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
544 struct nbpcb *nbp = vcp->vc_tdata;
547 if (nbp == NULL || nbp->nbp_tso == NULL)
549 if ((so = nbp->nbp_tso) != NULL) {
550 nbp->nbp_flags &= ~NBF_CONNECTED;
551 nbp->nbp_tso = (struct socket *)NULL;
555 if (nbp->nbp_state != NBST_RETARGET) {
556 nbp->nbp_state = NBST_CLOSED;
562 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
564 struct nbpcb *nbp = vcp->vc_tdata;
567 if (nbp->nbp_state != NBST_SESSION) {
571 M_PREPEND(m0, 4, MB_TRYWAIT);
574 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
575 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
585 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
587 struct nbpcb *nbp = vcp->vc_tdata;
591 nbp->nbp_flags |= NBF_RECVLOCK;
592 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
593 nbp->nbp_flags &= ~NBF_RECVLOCK;
598 smb_nbst_timo(struct smb_vc *vcp)
604 smb_nbst_intr(struct smb_vc *vcp)
606 struct nbpcb *nbp = vcp->vc_tdata;
608 if (nbp == NULL || nbp->nbp_tso == NULL)
610 sorwakeup(nbp->nbp_tso);
611 sowwakeup(nbp->nbp_tso);
615 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
617 struct nbpcb *nbp = vcp->vc_tdata;
621 *(int*)data = nbp->nbp_sndbuf;
624 *(int*)data = nbp->nbp_rcvbuf;
627 *(struct timespec*)data = nbp->nbp_timo;
636 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
638 struct nbpcb *nbp = vcp->vc_tdata;
642 nbp->nbp_selectid = data;
651 * Check for fatal errors
654 smb_nbst_fatal(struct smb_vc *vcp, int error)
666 struct smb_tran_desc smb_tran_nbtcp_desc = {
668 smb_nbst_create, smb_nbst_done,
669 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
670 smb_nbst_send, smb_nbst_recv,
671 smb_nbst_timo, smb_nbst_intr,
672 smb_nbst_getparam, smb_nbst_setparam,