2 * Copyright (c) 1999, 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/netncp/ncp_sock.c,v 1.2 1999/10/12 10:36:59 bp Exp $
33 * $DragonFly: src/sys/netproto/ncp/ncp_sock.c,v 1.9 2004/03/04 10:29:23 hsu Exp $
35 * Low level socket routines
41 #if !defined(INET) && !defined(IPX)
42 #error "NCP requeires either INET of IPX protocol family"
45 #include <sys/param.h>
46 #include <sys/errno.h>
47 #include <sys/malloc.h>
48 #include <sys/systm.h>
50 #include <sys/protosw.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/socketops.h>
54 #include <sys/kernel.h>
56 #include <sys/syslog.h>
58 #include <net/route.h>
61 #include <netproto/ipx/ipx.h>
62 #include <netproto/ipx/ipx_pcb.h>
72 #define ipx_setnullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0);
73 #define ipx_setnullhost(x) ((x).x_host.s_host[0] = 0); \
74 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0);
77 /*int ncp_poll(struct socket *so, int events);*/
78 /*static int ncp_getsockname(struct socket *so, caddr_t asa, int *alen);*/
79 static int ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *p);
82 /* This will need only if native IP used, or (unlikely) NCP will be
83 * implemented on the socket level
86 ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *td) {
89 error = soconnect(so, (struct sockaddr*)target, td);
93 * Wait for the connection to complete. Cribbed from the
94 * connect system call but with the wait timing out so
95 * that interruptible mounts don't hang here for a long time.
99 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
100 (void) tsleep((caddr_t)&so->so_timeo, 0, "ncpcon", 2 * hz);
101 if ((so->so_state & SS_ISCONNECTING) &&
102 so->so_error == 0 /*&& rep &&*/) {
103 so->so_state &= ~SS_ISCONNECTING;
109 error = so->so_error;
121 ncp_getsockname(struct socket *so, caddr_t asa, int *alen) {
126 error = so_pru_sockaddr(so, &sa);
129 len = min(len, sa->sa_len);
130 bcopy(sa, (caddr_t)asa, (u_int)len);
139 int ncp_sock_recv(struct socket *so, struct mbuf **mp, int *rlen)
142 struct thread *td = curthread; /* XXX */
145 auio.uio_resid = len = 1000000;
147 flags = MSG_DONTWAIT;
149 /* error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags); */
150 error = so_pru_soreceive(so, NULL, &auio, mp, NULL, &flags);
151 *rlen = len - auio.uio_resid;
156 #ifdef NCP_SOCKET_DEBUG
158 printf("ncp_recv: err=%d\n", error);
164 ncp_sock_send(struct socket *so, struct mbuf *top, struct ncp_rq *rqp)
166 struct thread *td = curthread; /* XXX */
167 struct sockaddr *to = 0;
168 struct ncp_conn *conn = rqp->conn;
174 m = m_copym(top, 0, M_COPYALL, M_WAIT);
176 error = so_pru_sosend(so, to, NULL, m, NULL, flags, td);
177 if (error == 0 || error == EINTR || error == ENETDOWN)
179 if (rqp->rexmit == 0) break;
181 tsleep(&sendwait, 0, "ncprsn", conn->li.timeout * hz);
182 error = ncp_chkintr(conn, td);
183 if (error == EINTR) break;
186 log(LOG_INFO, "ncp_send: error %d for server %s", error, conn->li.server);
192 ncp_poll(struct socket *so, int events){
193 struct thread *td = curthread; /* XXX */
194 struct ucred *cred=NULL;
195 return so_pru_sopoll(so, events, cred, td);
199 ncp_sock_rselect(struct socket *so, struct thread *td,
200 struct timeval *tv, int events)
202 struct timeval atv,rtv,ttv;
203 struct proc *p = td->td_proc;
210 if (itimerfix(&atv)) {
214 getmicrouptime(&rtv);
215 timevaladd(&atv, &rtv);
219 p->p_flag |= P_SELECT;
220 error = ncp_poll(so, events);
226 getmicrouptime(&rtv);
227 if (timevalcmp(&rtv, &atv, >=))
230 timevalsub(&ttv, &rtv);
231 timo = tvtohz_high(&ttv);
234 if ((p->p_flag & P_SELECT) == 0) {
238 p->p_flag &= ~P_SELECT;
239 error = tsleep((caddr_t)&selwait, 0, "ncpslt", timo);
242 p->p_flag &= ~P_SELECT;
243 if (error == ERESTART) {
244 /* printf("Signal: %x", CURSIG(p));*/
252 * Connect to specified server via IPX
255 ncp_sock_connect_ipx(struct ncp_conn *conn) {
256 struct sockaddr_ipx sipx;
258 struct thread *td = conn->td;
259 int addrlen, error, count;
261 sipx.sipx_port = htons(0);
263 for (count = 0;;count++) {
264 if (count > (IPXPORT_WELLKNOWN-IPXPORT_RESERVED)*2) {
268 conn->ncp_so = conn->wdg_so = NULL;
269 checkbad(socreate(AF_IPX, &conn->ncp_so, SOCK_DGRAM, 0, td));
270 if (conn->li.opt & NCP_OPT_WDOG)
271 checkbad(socreate(AF_IPX, &conn->wdg_so, SOCK_DGRAM,0,td));
272 addrlen = sizeof(sipx);
273 sipx.sipx_family = AF_IPX;
274 ipx_setnullnet(sipx.sipx_addr);
275 ipx_setnullhost(sipx.sipx_addr);
276 sipx.sipx_len = addrlen;
277 error = sobind(conn->ncp_so, (struct sockaddr *)&sipx, td);
279 if ((conn->li.opt & NCP_OPT_WDOG) == 0)
281 sipx.sipx_addr = sotoipxpcb(conn->ncp_so)->ipxp_laddr;
282 sipx.sipx_port = htons(ntohs(sipx.sipx_port) + 1);
283 ipx_setnullnet(sipx.sipx_addr);
284 ipx_setnullhost(sipx.sipx_addr);
285 error = sobind(conn->wdg_so, (struct sockaddr *)&sipx, td);
288 if (error != EADDRINUSE) goto bad;
289 sipx.sipx_port = htons((ntohs(sipx.sipx_port)+4) & 0xfff8);
290 soclose(conn->ncp_so);
292 soclose(conn->wdg_so);
294 npcb = sotoipxpcb(conn->ncp_so);
295 npcb->ipxp_dpt = IPXPROTO_NCP;
296 /* IPXrouted must be running, i.e. route must be presented */
297 conn->li.ipxaddr.sipx_len = sizeof(struct sockaddr_ipx);
298 checkbad(ncp_soconnect(conn->ncp_so, &conn->li.saddr, td));
300 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_net = npcb->ipxp_laddr.x_net;
301 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_host= npcb->ipxp_laddr.x_host;
304 conn->flags |= NCPFL_SOCONN;
307 if (ncp_burst_enabled) {
308 checkbad(socreate(AF_IPX, &conn->bc_so, SOCK_DGRAM, 0, td));
309 bzero(&sipx, sizeof(sipx));
310 sipx.sipx_len = sizeof(sipx);
311 checkbad(sobind(conn->bc_so, (struct sockaddr *)&sipx, td));
312 checkbad(ncp_soconnect(conn->bc_so, &conn->li.saddr, td));
316 conn->flags |= NCPFL_SOCONN;
317 ncp_sock_checksum(conn, 0);
321 ncp_sock_disconnect(conn);
326 ncp_sock_checksum(struct ncp_conn *conn, int enable) {
328 #ifdef SO_IPX_CHECKSUM
330 sotoipxpcb(conn->ncp_so)->ipxp_flags |= IPXP_CHECKSUM;
332 sotoipxpcb(conn->ncp_so)->ipxp_flags &= ~IPXP_CHECKSUM;
341 * Connect to specified server via IP
344 ncp_sock_connect_in(struct ncp_conn *conn) {
345 struct sockaddr_in sin;
346 struct thread *td = conn->td;
347 int addrlen=sizeof(sin), error;
351 conn->ncp_so = conn->wdg_so = NULL;
352 checkbad(socreate(AF_INET, &conn->ncp_so, SOCK_DGRAM, IPPROTO_UDP, td));
353 sin.sin_family = AF_INET;
354 sin.sin_len = addrlen;
355 checkbad(sobind(conn->ncp_so, (struct sockaddr *)&sin, td));
356 checkbad(ncp_soconnect(conn->ncp_so,(struct sockaddr*)&conn->li.addr, td));
358 conn->flags |= NCPFL_SOCONN;
361 ncp_sock_disconnect(conn);
368 * Connection expected to be locked
371 ncp_sock_disconnect(struct ncp_conn *conn) {
373 conn->flags &= ~(NCPFL_SOCONN | NCPFL_ATTACHED | NCPFL_LOGGED);
376 conn->ncp_so = (struct socket *)0;
382 conn->wdg_so = (struct socket *)0;
389 conn->bc_so = (struct socket *)NULL;
399 ncp_watchdog(struct ncp_conn *conn) {
402 int error, len, flags;
408 while (conn->wdg_so) { /* not a loop */
410 auio.uio_resid = len = 1000000;
411 auio.uio_td = curthread;
412 flags = MSG_DONTWAIT;
413 error = so_pru_soreceive(so, (struct sockaddr**)&sa, &auio, &m,
416 len -= auio.uio_resid;
417 NCPSDEBUG("got watch dog %d\n",len);
419 buf = mtod(m, char*);
420 if (buf[1] != '?') break;
422 error = so_pru_sosend(so, sa, NULL, m, NULL, 0, curthread);
423 NCPSDEBUG("send watch dog %d\n",error);
426 if (sa) FREE(sa, M_SONAME);
432 ncp_check_conn(struct ncp_conn *conn) {
435 if (conn == NULL || !(conn->flags & NCPFL_ATTACHED))