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/socketvar2.h>
46 #include <sys/socketops.h>
49 #include <sys/fcntl.h>
50 #include <sys/sysctl.h>
51 #include <sys/thread2.h>
54 #include <net/route.h>
56 #include <netinet/in.h>
57 #include <netinet/tcp.h>
59 #include <sys/mchain.h>
66 #include "smb_trantcp.h"
69 #define M_NBDATA M_PCB
71 static int smb_tcpsndbuf = 10 * 1024;
72 static int smb_tcprcvbuf = 10 * 1024;
74 SYSCTL_DECL(_net_smb);
75 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
76 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
78 #define nb_sosend(so,m,flags,p) \
79 so_pru_sosend(so, NULL, NULL, m, NULL, flags, td)
81 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
82 u_int8_t *rpcodep, struct thread *td);
83 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
86 nb_setsockopt_int(struct socket *so, int level, int name, int val)
90 bzero(&sopt, sizeof(sopt));
91 sopt.sopt_level = level;
92 sopt.sopt_name = name;
94 sopt.sopt_valsize = sizeof(val);
95 return sosetopt(so, &sopt);
99 nb_intr(struct nbpcb *nbp, struct thread *td)
105 nb_upcall(struct socket *so, void *arg, int waitflag)
107 struct nbpcb *nbp = arg;
109 if (arg == NULL || nbp->nbp_selectid == NULL)
111 wakeup(nbp->nbp_selectid);
115 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
117 u_int32_t *p = mtod(m, u_int32_t *);
119 *p = htonl((len & 0x1FFFF) | (type << 24));
124 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
132 NBDEBUG("[%s]\n", cp);
135 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
146 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
151 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
155 so->so_upcallarg = (caddr_t)nbp;
156 so->so_upcall = nb_upcall;
157 atomic_set_int(&so->so_rcv.ssb_flags, SSB_UPCALL);
158 so->so_rcv.ssb_timeo = (5 * hz);
159 so->so_snd.ssb_timeo = (5 * hz);
160 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf,
161 &td->td_proc->p_rlimit[RLIMIT_SBSIZE]);
164 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
165 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
166 atomic_clear_int(&so->so_rcv.ssb_flags, SSB_NOINTR);
167 atomic_clear_int(&so->so_snd.ssb_flags, SSB_NOINTR);
168 error = soconnect(so, (struct sockaddr*)to, td);
171 * If signals are allowed nbssn_recv() can wind up in a hard loop
174 atomic_set_int(&so->so_rcv.ssb_flags, SSB_NOINTR);
175 atomic_set_int(&so->so_snd.ssb_flags, SSB_NOINTR);
179 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
180 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
181 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
182 (error = nb_intr(nbp, td)) != 0) {
183 soclrstate(so, SS_ISCONNECTING);
189 error = so->so_error;
197 smb_nbst_disconnect(nbp->nbp_vc, td);
202 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
204 struct mbchain mb, *mbp = &mb;
205 struct mdchain md, *mdp = &md;
207 struct sockaddr_in sin;
210 int error, rplen, res;
212 error = mb_init(mbp);
215 mb_put_uint32le(mbp, 0);
216 nb_put_name(mbp, nbp->nbp_paddr);
217 nb_put_name(mbp, nbp->nbp_laddr);
218 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
219 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
221 nbp->nbp_state = NBST_RQSENT;
227 error = socket_wait(nbp->nbp_tso, &nbp->nbp_timo, &res);
228 if (error == EWOULDBLOCK) { /* Timeout */
229 NBDEBUG("initial request timeout\n");
232 if (error) /* restart or interrupt */
234 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
236 NBDEBUG("recv() error %d\n", error);
240 * Process NETBIOS reply
246 if (rpcode == NB_SSN_POSRESP) {
247 nbp->nbp_state = NBST_SESSION;
248 nbp->nbp_flags |= NBF_CONNECTED;
251 if (rpcode != NB_SSN_RTGRESP) {
252 error = ECONNABORTED;
256 error = ECONNABORTED;
259 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
260 md_get_uint16(mdp, &port);
262 nbp->nbp_state = NBST_RETARGET;
263 smb_nbst_disconnect(nbp->nbp_vc, td);
264 error = nb_connect_in(nbp, &sin, td);
266 error = nbssn_rq_request(nbp, td);
268 smb_nbst_disconnect(nbp->nbp_vc, td);
278 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
279 u_int8_t *rpcodep, int flags, struct thread *td)
281 struct socket *so = nbp->nbp_tso;
287 aio.iov_base = (caddr_t)&len;
288 aio.iov_len = sizeof(len);
291 auio.uio_segflg = UIO_SYSSPACE;
292 auio.uio_rw = UIO_READ;
294 auio.uio_resid = sizeof(len);
296 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
299 if (auio.uio_resid > 0) {
300 SMBSDEBUG("short reply\n");
304 *rpcodep = (len >> 24) & 0xFF;
306 if (len > SMB_MAXPKTLEN) {
307 SMBERROR("packet too long (%d)\n", len);
315 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
316 u_int8_t *rpcodep, struct thread *td)
318 struct socket *so = nbp->nbp_tso;
332 error = nbssn_recvhdr(nbp, &savelen, &rpcode, MSG_DONTWAIT, td);
334 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
335 nbp->nbp_state = NBST_CLOSED;
336 NBDEBUG("session closed by peer\n");
342 if (savelen == 0 && nbp->nbp_state != NBST_SESSION)
344 if (rpcode == NB_SSN_KEEPALIVE)
347 sbinit(&sio, savelen);
348 rcvflg = MSG_WAITALL;
349 error = so_pru_soreceive(so, NULL, NULL, &sio,
351 } while (error == EWOULDBLOCK || error == EINTR ||
355 if (sio.sb_cc != savelen) {
356 SMBERROR("packet is shorter than expected\n");
361 if (nbp->nbp_state == NBST_SESSION && rpcode == NB_SSN_MESSAGE)
363 NBDEBUG("non-session packet %x\n", rpcode);
380 * SMB transport interface
383 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
387 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK | M_ZERO);
388 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
389 nbp->nbp_state = NBST_CLOSED;
391 nbp->nbp_sndbuf = smb_tcpsndbuf;
392 nbp->nbp_rcvbuf = smb_tcprcvbuf;
398 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
400 struct nbpcb *nbp = vcp->vc_tdata;
404 smb_nbst_disconnect(vcp, td);
406 kfree(nbp->nbp_laddr, M_SONAME);
408 kfree(nbp->nbp_paddr, M_SONAME);
409 kfree(nbp, M_NBDATA);
414 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
416 struct nbpcb *nbp = vcp->vc_tdata;
417 struct sockaddr_nb *snb;
423 if (nbp->nbp_flags & NBF_LOCADDR)
426 * It is possible to create NETBIOS name in the kernel,
427 * but nothing prevents us to do it in the user space.
432 if (slen < NB_MINSALEN)
434 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
439 nbp->nbp_laddr = snb;
440 nbp->nbp_flags |= NBF_LOCADDR;
447 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
449 struct nbpcb *nbp = vcp->vc_tdata;
450 struct sockaddr_in sin;
451 struct sockaddr_nb *snb;
452 struct timespec ts1, ts2;
456 if (nbp->nbp_tso != NULL)
458 if (nbp->nbp_laddr == NULL)
461 if (slen < NB_MINSALEN)
463 if (nbp->nbp_paddr) {
464 kfree(nbp->nbp_paddr, M_SONAME);
465 nbp->nbp_paddr = NULL;
467 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
470 nbp->nbp_paddr = snb;
471 sin = snb->snb_addrin;
473 error = nb_connect_in(nbp, &sin, td);
477 timespecsub(&ts2, &ts1);
478 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
481 timespecadd(&nbp->nbp_timo, &ts2);
482 timespecadd(&nbp->nbp_timo, &ts2);
483 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
484 error = nbssn_rq_request(nbp, td);
486 smb_nbst_disconnect(vcp, td);
491 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
493 struct nbpcb *nbp = vcp->vc_tdata;
496 if (nbp == NULL || nbp->nbp_tso == NULL)
498 if ((so = nbp->nbp_tso) != NULL) {
499 nbp->nbp_flags &= ~NBF_CONNECTED;
501 soshutdown(so, SHUT_RDWR);
502 soclose(so, FNONBLOCK);
504 if (nbp->nbp_state != NBST_RETARGET) {
505 nbp->nbp_state = NBST_CLOSED;
511 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
513 struct nbpcb *nbp = vcp->vc_tdata;
516 if (nbp->nbp_state != NBST_SESSION) {
520 M_PREPEND(m0, 4, MB_TRYWAIT);
523 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
524 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
534 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
536 struct nbpcb *nbp = vcp->vc_tdata;
540 nbp->nbp_flags |= NBF_RECVLOCK;
541 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
542 nbp->nbp_flags &= ~NBF_RECVLOCK;
547 smb_nbst_timo(struct smb_vc *vcp)
553 smb_nbst_intr(struct smb_vc *vcp)
555 struct nbpcb *nbp = vcp->vc_tdata;
557 if (nbp == NULL || nbp->nbp_tso == NULL)
559 sorwakeup(nbp->nbp_tso);
560 sowwakeup(nbp->nbp_tso);
564 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
566 struct nbpcb *nbp = vcp->vc_tdata;
570 *(int*)data = nbp->nbp_sndbuf;
573 *(int*)data = nbp->nbp_rcvbuf;
576 *(struct timespec*)data = nbp->nbp_timo;
585 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
587 struct nbpcb *nbp = vcp->vc_tdata;
591 nbp->nbp_selectid = data;
600 * Check for fatal errors
603 smb_nbst_fatal(struct smb_vc *vcp, int error)
615 struct smb_tran_desc smb_tran_nbtcp_desc = {
617 smb_nbst_create, smb_nbst_done,
618 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
619 smb_nbst_send, smb_nbst_recv,
620 smb_nbst_timo, smb_nbst_intr,
621 smb_nbst_getparam, smb_nbst_setparam,