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 $
34 * Low level socket routines
40 #if !defined(INET) && !defined(IPX)
41 #error "NCP requeires either INET of IPX protocol family"
44 #include <sys/param.h>
45 #include <sys/errno.h>
46 #include <sys/malloc.h>
47 #include <sys/systm.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/protosw.h>
52 #include <sys/kernel.h>
54 #include <sys/syslog.h>
56 #include <net/route.h>
59 #include <netipx/ipx.h>
60 #include <netipx/ipx_pcb.h>
63 #include <netncp/ncp.h>
64 #include <netncp/ncp_conn.h>
65 #include <netncp/ncp_sock.h>
66 #include <netncp/ncp_subr.h>
67 #include <netncp/ncp_rq.h>
70 #define ipx_setnullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0);
71 #define ipx_setnullhost(x) ((x).x_host.s_host[0] = 0); \
72 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0);
75 /*int ncp_poll(struct socket *so, int events);*/
76 /*static int ncp_getsockname(struct socket *so, caddr_t asa, int *alen);*/
77 static int ncp_soconnect(struct socket *so,struct sockaddr *target, struct proc *p);
80 /* This will need only if native IP used, or (unlikely) NCP will be
81 * implemented on the socket level
84 ncp_soconnect(struct socket *so,struct sockaddr *target, struct proc *p) {
87 error = soconnect(so, (struct sockaddr*)target, p);
91 * Wait for the connection to complete. Cribbed from the
92 * connect system call but with the wait timing out so
93 * that interruptible mounts don't hang here for a long time.
97 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
98 (void) tsleep((caddr_t)&so->so_timeo, PSOCK, "ncpcon", 2 * hz);
99 if ((so->so_state & SS_ISCONNECTING) &&
100 so->so_error == 0 /*&& rep &&*/) {
101 so->so_state &= ~SS_ISCONNECTING;
107 error = so->so_error;
119 ncp_getsockname(struct socket *so, caddr_t asa, int *alen) {
124 error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, &sa);
127 len = min(len, sa->sa_len);
128 bcopy(sa, (caddr_t)asa, (u_int)len);
137 int ncp_sock_recv(struct socket *so, struct mbuf **mp, int *rlen)
140 struct proc *p=curproc; /* XXX */
143 auio.uio_resid = len = 1000000;
145 flags = MSG_DONTWAIT;
147 /* error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, &auio,
148 (struct mbuf **)0, (struct mbuf **)0, &flags);*/
149 error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, &auio,
150 mp, (struct mbuf **)0, &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 proc *p = curproc; /* 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->so_proto->pr_usrreqs->pru_sosend(so, to, 0, m, 0, flags, p);
177 if (error == 0 || error == EINTR || error == ENETDOWN)
179 if (rqp->rexmit == 0) break;
181 tsleep(&sendwait, PWAIT, "ncprsn", conn->li.timeout * hz);
182 error = ncp_chkintr(conn, p);
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 proc *p = curproc;
194 struct ucred *cred=NULL;
195 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p);
199 ncp_sock_rselect(struct socket *so,struct proc *p, struct timeval *tv, int events)
201 struct timeval atv,rtv,ttv;
206 if (itimerfix(&atv)) {
210 getmicrouptime(&rtv);
211 timevaladd(&atv, &rtv);
215 p->p_flag |= P_SELECT;
216 error = ncp_poll(so, events);
222 getmicrouptime(&rtv);
223 if (timevalcmp(&rtv, &atv, >=))
226 timevalsub(&ttv, &rtv);
230 if ((p->p_flag & P_SELECT) == 0) {
234 p->p_flag &= ~P_SELECT;
235 error = tsleep((caddr_t)&selwait, PSOCK, "ncpslt", timo);
238 p->p_flag &= ~P_SELECT;
239 if (error == ERESTART) {
240 /* printf("Signal: %x", CURSIG(p));*/
248 * Connect to specified server via IPX
251 ncp_sock_connect_ipx(struct ncp_conn *conn) {
252 struct sockaddr_ipx sipx;
254 struct proc *p = conn->procp;
255 int addrlen, error, count;
257 sipx.sipx_port = htons(0);
259 for (count = 0;;count++) {
260 if (count > (IPXPORT_WELLKNOWN-IPXPORT_RESERVED)*2) {
264 conn->ncp_so = conn->wdg_so = NULL;
265 checkbad(socreate(AF_IPX, &conn->ncp_so, SOCK_DGRAM, 0, p));
266 if (conn->li.opt & NCP_OPT_WDOG)
267 checkbad(socreate(AF_IPX, &conn->wdg_so, SOCK_DGRAM,0,p));
268 addrlen = sizeof(sipx);
269 sipx.sipx_family = AF_IPX;
270 ipx_setnullnet(sipx.sipx_addr);
271 ipx_setnullhost(sipx.sipx_addr);
272 sipx.sipx_len = addrlen;
273 error = sobind(conn->ncp_so, (struct sockaddr *)&sipx, p);
275 if ((conn->li.opt & NCP_OPT_WDOG) == 0)
277 sipx.sipx_addr = sotoipxpcb(conn->ncp_so)->ipxp_laddr;
278 sipx.sipx_port = htons(ntohs(sipx.sipx_port) + 1);
279 ipx_setnullnet(sipx.sipx_addr);
280 ipx_setnullhost(sipx.sipx_addr);
281 error = sobind(conn->wdg_so, (struct sockaddr *)&sipx, p);
284 if (error != EADDRINUSE) goto bad;
285 sipx.sipx_port = htons((ntohs(sipx.sipx_port)+4) & 0xfff8);
286 soclose(conn->ncp_so);
288 soclose(conn->wdg_so);
290 npcb = sotoipxpcb(conn->ncp_so);
291 npcb->ipxp_dpt = IPXPROTO_NCP;
292 /* IPXrouted must be running, i.e. route must be presented */
293 conn->li.ipxaddr.sipx_len = sizeof(struct sockaddr_ipx);
294 checkbad(ncp_soconnect(conn->ncp_so, &conn->li.saddr, p));
296 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_net = npcb->ipxp_laddr.x_net;
297 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_host= npcb->ipxp_laddr.x_host;
300 conn->flags |= NCPFL_SOCONN;
303 if (ncp_burst_enabled) {
304 checkbad(socreate(AF_IPX, &conn->bc_so, SOCK_DGRAM, 0, p));
305 bzero(&sipx, sizeof(sipx));
306 sipx.sipx_len = sizeof(sipx);
307 checkbad(sobind(conn->bc_so, (struct sockaddr *)&sipx, p));
308 checkbad(ncp_soconnect(conn->bc_so, &conn->li.saddr, p));
312 conn->flags |= NCPFL_SOCONN;
313 ncp_sock_checksum(conn, 0);
317 ncp_sock_disconnect(conn);
322 ncp_sock_checksum(struct ncp_conn *conn, int enable) {
324 #ifdef SO_IPX_CHECKSUM
326 sotoipxpcb(conn->ncp_so)->ipxp_flags |= IPXP_CHECKSUM;
328 sotoipxpcb(conn->ncp_so)->ipxp_flags &= ~IPXP_CHECKSUM;
337 * Connect to specified server via IP
340 ncp_sock_connect_in(struct ncp_conn *conn) {
341 struct sockaddr_in sin;
342 struct proc *p=conn->procp;
343 int addrlen=sizeof(sin), error;
347 conn->ncp_so = conn->wdg_so = NULL;
348 checkbad(socreate(AF_INET, &conn->ncp_so, SOCK_DGRAM, IPPROTO_UDP, p));
349 sin.sin_family = AF_INET;
350 sin.sin_len = addrlen;
351 checkbad(sobind(conn->ncp_so, (struct sockaddr *)&sin, p));
352 checkbad(ncp_soconnect(conn->ncp_so,(struct sockaddr*)&conn->li.addr, p));
354 conn->flags |= NCPFL_SOCONN;
357 ncp_sock_disconnect(conn);
364 * Connection expected to be locked
367 ncp_sock_disconnect(struct ncp_conn *conn) {
368 register struct socket *so;
369 conn->flags &= ~(NCPFL_SOCONN | NCPFL_ATTACHED | NCPFL_LOGGED);
372 conn->ncp_so = (struct socket *)0;
378 conn->wdg_so = (struct socket *)0;
385 conn->bc_so = (struct socket *)NULL;
395 ncp_watchdog(struct ncp_conn *conn) {
398 int error, len, flags;
404 while (conn->wdg_so) { /* not a loop */
406 auio.uio_resid = len = 1000000;
407 auio.uio_procp = curproc;
408 flags = MSG_DONTWAIT;
409 error = so->so_proto->pr_usrreqs->pru_soreceive(so,
410 (struct sockaddr**)&sa, &auio, &m, (struct mbuf**)0, &flags);
412 len -= auio.uio_resid;
413 NCPSDEBUG("got watch dog %d\n",len);
415 buf = mtod(m, char*);
416 if (buf[1] != '?') break;
418 error = so->so_proto->pr_usrreqs->pru_sosend(so, (struct sockaddr*)sa, 0, m, 0, 0, curproc);
419 NCPSDEBUG("send watch dog %d\n",error);
422 if (sa) FREE(sa, M_SONAME);
428 ncp_check_conn(struct ncp_conn *conn) {
431 if (conn == NULL || !(conn->flags & NCPFL_ATTACHED))