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 1.8 2004/03/04 10:29:24 hsu 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/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/socketops.h>
47 #include <sys/sysctl.h>
50 #include <net/route.h>
52 #include <netinet/in.h>
53 #include <netinet/tcp.h>
55 #include <sys/mchain.h>
62 #include "smb_trantcp.h"
65 #define M_NBDATA M_PCB
67 static int smb_tcpsndbuf = 10 * 1024;
68 static int smb_tcprcvbuf = 10 * 1024;
70 SYSCTL_DECL(_net_smb);
71 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
72 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
74 #define nb_sosend(so,m,flags,p) \
75 so_pru_sosend(so, NULL, NULL, m, NULL, flags, td)
77 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
78 u_int8_t *rpcodep, struct thread *td);
79 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
82 nb_setsockopt_int(struct socket *so, int level, int name, int val)
86 bzero(&sopt, sizeof(sopt));
87 sopt.sopt_level = level;
88 sopt.sopt_name = name;
90 sopt.sopt_valsize = sizeof(val);
91 return sosetopt(so, &sopt);
95 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
97 return so_pru_sopoll(nbp->nbp_tso, events, NULL, td);
101 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct thread *td)
103 struct proc *p = td->td_proc;
104 struct timeval atv, rtv, ttv;
109 if (itimerfix(&atv)) {
113 getmicrouptime(&rtv);
114 timevaladd(&atv, &rtv);
119 p->p_flag |= P_SELECT;
120 error = nb_poll(nbp, events, td);
126 getmicrouptime(&rtv);
127 if (timevalcmp(&rtv, &atv, >=))
130 timevalsub(&ttv, &rtv);
131 timo = tvtohz_high(&ttv);
134 if ((p->p_flag & P_SELECT) == 0) {
138 p->p_flag &= ~P_SELECT;
139 error = tsleep((caddr_t)&selwait, 0, "nbsel", timo);
142 p->p_flag &= ~P_SELECT;
143 if (error == ERESTART)
149 nb_intr(struct nbpcb *nbp, struct thread *td)
155 nb_upcall(struct socket *so, void *arg, int waitflag)
157 struct nbpcb *nbp = arg;
159 if (arg == NULL || nbp->nbp_selectid == NULL)
161 wakeup(nbp->nbp_selectid);
165 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
167 u_int32_t *p = mtod(m, u_int32_t *);
169 *p = htonl((len & 0x1FFFF) | (type << 24));
174 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
182 NBDEBUG("[%s]\n", cp);
185 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
196 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
201 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
205 so->so_upcallarg = (caddr_t)nbp;
206 so->so_upcall = nb_upcall;
207 so->so_rcv.sb_flags |= SB_UPCALL;
208 so->so_rcv.sb_timeo = (5 * hz);
209 so->so_snd.sb_timeo = (5 * hz);
210 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
213 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
214 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
215 so->so_rcv.sb_flags &= ~SB_NOINTR;
216 so->so_snd.sb_flags &= ~SB_NOINTR;
217 error = soconnect(so, (struct sockaddr*)to, td);
221 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
222 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
223 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
224 (error = nb_intr(nbp, td)) != 0) {
225 so->so_state &= ~SS_ISCONNECTING;
231 error = so->so_error;
239 smb_nbst_disconnect(nbp->nbp_vc, td);
244 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
246 struct mbchain mb, *mbp = &mb;
247 struct mdchain md, *mdp = &md;
250 struct sockaddr_in sin;
255 error = mb_init(mbp);
258 mb_put_uint32le(mbp, 0);
259 nb_put_name(mbp, nbp->nbp_paddr);
260 nb_put_name(mbp, nbp->nbp_laddr);
261 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
262 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
264 nbp->nbp_state = NBST_RQSENT;
270 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
271 error = nbssn_rselect(nbp, &tv, POLLIN, td);
272 if (error == EWOULDBLOCK) { /* Timeout */
273 NBDEBUG("initial request timeout\n");
276 if (error) /* restart or interrupt */
278 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
280 NBDEBUG("recv() error %d\n", error);
284 * Process NETBIOS reply
290 if (rpcode == NB_SSN_POSRESP) {
291 nbp->nbp_state = NBST_SESSION;
292 nbp->nbp_flags |= NBF_CONNECTED;
295 if (rpcode != NB_SSN_RTGRESP) {
296 error = ECONNABORTED;
300 error = ECONNABORTED;
303 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
304 md_get_uint16(mdp, &port);
306 nbp->nbp_state = NBST_RETARGET;
307 smb_nbst_disconnect(nbp->nbp_vc, td);
308 error = nb_connect_in(nbp, &sin, td);
310 error = nbssn_rq_request(nbp, td);
312 smb_nbst_disconnect(nbp->nbp_vc, td);
322 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
323 u_int8_t *rpcodep, int flags, struct thread *td)
325 struct socket *so = nbp->nbp_tso;
331 aio.iov_base = (caddr_t)&len;
332 aio.iov_len = sizeof(len);
335 auio.uio_segflg = UIO_SYSSPACE;
336 auio.uio_rw = UIO_READ;
338 auio.uio_resid = sizeof(len);
340 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
343 if (auio.uio_resid > 0) {
344 SMBSDEBUG("short reply\n");
348 *rpcodep = (len >> 24) & 0xFF;
350 if (len > SMB_MAXPKTLEN) {
351 SMBERROR("packet too long (%d)\n", len);
359 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
360 u_int8_t *rpcodep, struct thread *td)
362 struct socket *so = nbp->nbp_tso;
376 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
378 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
379 nbp->nbp_state = NBST_CLOSED;
380 NBDEBUG("session closed by peer\n");
385 if (len == 0 && nbp->nbp_state != NBST_SESSION)
387 if (rpcode == NB_SSN_KEEPALIVE)
389 bzero(&auio, sizeof(auio));
390 auio.uio_resid = len;
393 rcvflg = MSG_WAITALL;
394 error = so_pru_soreceive(so, NULL, &auio, &m, NULL,
396 } while (error == EWOULDBLOCK || error == EINTR ||
400 if (auio.uio_resid > 0) {
401 SMBERROR("packet is shorter than expected\n");
405 if (nbp->nbp_state == NBST_SESSION &&
406 rpcode == NB_SSN_MESSAGE)
408 NBDEBUG("non-session packet %x\n", rpcode);
427 * SMB transport interface
430 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
434 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
435 bzero(nbp, sizeof *nbp);
436 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
437 nbp->nbp_state = NBST_CLOSED;
439 nbp->nbp_sndbuf = smb_tcpsndbuf;
440 nbp->nbp_rcvbuf = smb_tcprcvbuf;
446 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
448 struct nbpcb *nbp = vcp->vc_tdata;
452 smb_nbst_disconnect(vcp, td);
454 free(nbp->nbp_laddr, M_SONAME);
456 free(nbp->nbp_paddr, M_SONAME);
462 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
464 struct nbpcb *nbp = vcp->vc_tdata;
465 struct sockaddr_nb *snb;
471 if (nbp->nbp_flags & NBF_LOCADDR)
474 * It is possible to create NETBIOS name in the kernel,
475 * but nothing prevents us to do it in the user space.
480 if (slen < NB_MINSALEN)
482 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
487 nbp->nbp_laddr = snb;
488 nbp->nbp_flags |= NBF_LOCADDR;
495 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
497 struct nbpcb *nbp = vcp->vc_tdata;
498 struct sockaddr_in sin;
499 struct sockaddr_nb *snb;
500 struct timespec ts1, ts2;
504 if (nbp->nbp_tso != NULL)
506 if (nbp->nbp_laddr == NULL)
509 if (slen < NB_MINSALEN)
511 if (nbp->nbp_paddr) {
512 free(nbp->nbp_paddr, M_SONAME);
513 nbp->nbp_paddr = NULL;
515 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
518 nbp->nbp_paddr = snb;
519 sin = snb->snb_addrin;
521 error = nb_connect_in(nbp, &sin, td);
525 timespecsub(&ts2, &ts1);
526 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
529 timespecadd(&nbp->nbp_timo, &ts2);
530 timespecadd(&nbp->nbp_timo, &ts2);
531 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
532 error = nbssn_rq_request(nbp, td);
534 smb_nbst_disconnect(vcp, td);
539 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
541 struct nbpcb *nbp = vcp->vc_tdata;
544 if (nbp == NULL || nbp->nbp_tso == NULL)
546 if ((so = nbp->nbp_tso) != NULL) {
547 nbp->nbp_flags &= ~NBF_CONNECTED;
548 nbp->nbp_tso = (struct socket *)NULL;
552 if (nbp->nbp_state != NBST_RETARGET) {
553 nbp->nbp_state = NBST_CLOSED;
559 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
561 struct nbpcb *nbp = vcp->vc_tdata;
564 if (nbp->nbp_state != NBST_SESSION) {
568 M_PREPEND(m0, 4, M_TRYWAIT);
571 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
572 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
582 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
584 struct nbpcb *nbp = vcp->vc_tdata;
588 nbp->nbp_flags |= NBF_RECVLOCK;
589 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
590 nbp->nbp_flags &= ~NBF_RECVLOCK;
595 smb_nbst_timo(struct smb_vc *vcp)
601 smb_nbst_intr(struct smb_vc *vcp)
603 struct nbpcb *nbp = vcp->vc_tdata;
605 if (nbp == NULL || nbp->nbp_tso == NULL)
607 sorwakeup(nbp->nbp_tso);
608 sowwakeup(nbp->nbp_tso);
612 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
614 struct nbpcb *nbp = vcp->vc_tdata;
618 *(int*)data = nbp->nbp_sndbuf;
621 *(int*)data = nbp->nbp_rcvbuf;
624 *(struct timespec*)data = nbp->nbp_timo;
633 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
635 struct nbpcb *nbp = vcp->vc_tdata;
639 nbp->nbp_selectid = data;
648 * Check for fatal errors
651 smb_nbst_fatal(struct smb_vc *vcp, int error)
663 struct smb_tran_desc smb_tran_nbtcp_desc = {
665 smb_nbst_create, smb_nbst_done,
666 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
667 smb_nbst_send, smb_nbst_recv,
668 smb_nbst_timo, smb_nbst_intr,
669 smb_nbst_getparam, smb_nbst_setparam,