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 1.20 2007/05/18 17:05:12 dillon Exp $
35 * Low level socket routines
41 #if !defined(INET) && !defined(IPX)
42 #error "NCP requires 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/fcntl.h>
57 #include <sys/syslog.h>
59 #include <net/route.h>
60 #include <sys/thread2.h>
63 #include <netproto/ipx/ipx.h>
64 #include <netproto/ipx/ipx_pcb.h>
74 #define ipx_setnullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0);
75 #define ipx_setnullhost(x) ((x).x_host.s_host[0] = 0); \
76 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0);
79 /*int ncp_poll(struct socket *so, int events);*/
80 /*static int ncp_getsockname(struct socket *so, caddr_t asa, int *alen);*/
81 static int ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *p);
84 /* This will need only if native IP used, or (unlikely) NCP will be
85 * implemented on the socket level
88 ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *td) {
91 error = soconnect(so, (struct sockaddr*)target, td);
95 * Wait for the connection to complete. Cribbed from the
96 * connect system call but with the wait timing out so
97 * that interruptible mounts don't hang here for a long time.
101 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
102 tsleep((caddr_t)&so->so_timeo, 0, "ncpcon", 2 * hz);
103 if ((so->so_state & SS_ISCONNECTING) &&
104 so->so_error == 0 /*&& rep &&*/) {
105 so->so_state &= ~SS_ISCONNECTING;
111 error = so->so_error;
123 ncp_getsockname(struct socket *so, caddr_t asa, int *alen) {
128 error = so_pru_sockaddr(so, &sa);
131 len = min(len, sa->sa_len);
132 bcopy(sa, (caddr_t)asa, (u_int)len);
142 ncp_sock_recv(struct socket *so, struct sockbuf *sio)
146 sbinit(sio, 1000000); /* limit data returned (inexact, hint only) */
147 flags = MSG_DONTWAIT;
149 error = so_pru_soreceive(so, NULL, NULL, sio, NULL, &flags);
150 #ifdef NCP_SOCKET_DEBUG
152 kprintf("ncp_recv: err=%d\n", error);
158 ncp_sock_send(struct socket *so, struct mbuf *top, struct ncp_rq *rqp)
160 struct thread *td = curthread; /* XXX */
161 struct sockaddr *to = 0;
162 struct ncp_conn *conn = rqp->conn;
168 m = m_copym(top, 0, M_COPYALL, MB_WAIT);
170 error = so_pru_sosend(so, to, NULL, m, NULL, flags, td);
171 if (error == 0 || error == EINTR || error == ENETDOWN)
173 if (rqp->rexmit == 0) break;
175 tsleep(&sendwait, 0, "ncprsn", conn->li.timeout * hz);
176 error = ncp_chkintr(conn, td);
177 if (error == EINTR) break;
180 log(LOG_INFO, "ncp_send: error %d for server %s", error, conn->li.server);
186 ncp_poll(struct socket *so, int events)
188 return (so_pru_sopoll(so, events, NULL));
192 ncp_sock_rselect(struct socket *so, struct thread *td,
193 struct timeval *tv, int events)
195 struct timeval atv,rtv,ttv;
196 struct lwp *lp = td->td_lwp;
203 if (itimerfix(&atv)) {
207 getmicrouptime(&rtv);
208 timevaladd(&atv, &rtv);
212 lp->lwp_flag |= LWP_SELECT;
213 error = ncp_poll(so, events);
219 getmicrouptime(&rtv);
220 if (timevalcmp(&rtv, &atv, >=))
223 timevalsub(&ttv, &rtv);
224 timo = tvtohz_high(&ttv);
227 if ((lp->lwp_flag & LWP_SELECT) == 0) {
231 lp->lwp_flag &= ~LWP_SELECT;
232 error = tsleep((caddr_t)&selwait, 0, "ncpslt", timo);
235 lp->lwp_flag &= ~LWP_SELECT;
236 if (error == ERESTART) {
237 /* kprintf("Signal: %x", CURSIG(p));*/
245 * Connect to specified server via IPX
248 ncp_sock_connect_ipx(struct ncp_conn *conn) {
249 struct sockaddr_ipx sipx;
251 struct thread *td = conn->td;
252 int addrlen, error, count;
254 sipx.sipx_port = htons(0);
256 for (count = 0;;count++) {
257 if (count > (IPXPORT_WELLKNOWN-IPXPORT_RESERVED)*2) {
261 conn->ncp_so = conn->wdg_so = NULL;
262 checkbad(socreate(AF_IPX, &conn->ncp_so, SOCK_DGRAM, 0, td));
263 if (conn->li.opt & NCP_OPT_WDOG)
264 checkbad(socreate(AF_IPX, &conn->wdg_so, SOCK_DGRAM,0,td));
265 addrlen = sizeof(sipx);
266 sipx.sipx_family = AF_IPX;
267 ipx_setnullnet(sipx.sipx_addr);
268 ipx_setnullhost(sipx.sipx_addr);
269 sipx.sipx_len = addrlen;
270 error = sobind(conn->ncp_so, (struct sockaddr *)&sipx, td);
272 if ((conn->li.opt & NCP_OPT_WDOG) == 0)
274 sipx.sipx_addr = sotoipxpcb(conn->ncp_so)->ipxp_laddr;
275 sipx.sipx_port = htons(ntohs(sipx.sipx_port) + 1);
276 ipx_setnullnet(sipx.sipx_addr);
277 ipx_setnullhost(sipx.sipx_addr);
278 error = sobind(conn->wdg_so, (struct sockaddr *)&sipx, td);
281 if (error != EADDRINUSE) goto bad;
282 sipx.sipx_port = htons((ntohs(sipx.sipx_port)+4) & 0xfff8);
283 soclose(conn->ncp_so, FNONBLOCK);
285 soclose(conn->wdg_so, FNONBLOCK);
287 npcb = sotoipxpcb(conn->ncp_so);
288 npcb->ipxp_dpt = IPXPROTO_NCP;
289 /* IPXrouted must be running, i.e. route must be presented */
290 conn->li.ipxaddr.sipx_len = sizeof(struct sockaddr_ipx);
291 checkbad(ncp_soconnect(conn->ncp_so, &conn->li.saddr, td));
293 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_net = npcb->ipxp_laddr.x_net;
294 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_host= npcb->ipxp_laddr.x_host;
297 conn->flags |= NCPFL_SOCONN;
300 if (ncp_burst_enabled) {
301 checkbad(socreate(AF_IPX, &conn->bc_so, SOCK_DGRAM, 0, td));
302 bzero(&sipx, sizeof(sipx));
303 sipx.sipx_len = sizeof(sipx);
304 checkbad(sobind(conn->bc_so, (struct sockaddr *)&sipx, td));
305 checkbad(ncp_soconnect(conn->bc_so, &conn->li.saddr, td));
309 conn->flags |= NCPFL_SOCONN;
310 ncp_sock_checksum(conn, 0);
314 ncp_sock_disconnect(conn);
319 ncp_sock_checksum(struct ncp_conn *conn, int enable) {
321 #ifdef SO_IPX_CHECKSUM
323 sotoipxpcb(conn->ncp_so)->ipxp_flags |= IPXP_CHECKSUM;
325 sotoipxpcb(conn->ncp_so)->ipxp_flags &= ~IPXP_CHECKSUM;
334 * Connect to specified server via IP
337 ncp_sock_connect_in(struct ncp_conn *conn) {
338 struct sockaddr_in sin;
339 struct thread *td = conn->td;
340 int addrlen=sizeof(sin), error;
344 conn->ncp_so = conn->wdg_so = NULL;
345 checkbad(socreate(AF_INET, &conn->ncp_so, SOCK_DGRAM, IPPROTO_UDP, td));
346 sin.sin_family = AF_INET;
347 sin.sin_len = addrlen;
348 checkbad(sobind(conn->ncp_so, (struct sockaddr *)&sin, td));
349 checkbad(ncp_soconnect(conn->ncp_so,(struct sockaddr*)&conn->li.addr, td));
351 conn->flags |= NCPFL_SOCONN;
354 ncp_sock_disconnect(conn);
361 * Connection expected to be locked
364 ncp_sock_disconnect(struct ncp_conn *conn) {
366 conn->flags &= ~(NCPFL_SOCONN | NCPFL_ATTACHED | NCPFL_LOGGED);
370 soshutdown(so, SHUT_RDWR);
371 soclose(so, FNONBLOCK);
376 soshutdown(so, SHUT_RDWR);
377 soclose(so, FNONBLOCK);
383 soshutdown(so, SHUT_RDWR);
384 soclose(so, FNONBLOCK);
392 ncp_watchdog(struct ncp_conn *conn) {
394 int error, len, flags;
400 while (conn->wdg_so) { /* not a loop */
402 sbinit(&sio, 1000000);
403 flags = MSG_DONTWAIT;
404 error = so_pru_soreceive(so, (struct sockaddr**)&sa,
405 NULL, &sio, NULL, &flags);
409 NCPSDEBUG("got watch dog %d\n",len);
414 buf = mtod(sio.sb_mb, char *);
420 error = so_pru_sosend(so, sa, NULL, sio.sb_mb, NULL, 0, curthread);
421 NCPSDEBUG("send watch dog %d\n",error);
431 ncp_check_conn(struct ncp_conn *conn) {
432 if (conn == NULL || !(conn->flags & NCPFL_ATTACHED))