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 1.4 2003/07/19 21:14:45 dillon 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/socket.h>
51 #include <sys/socketvar.h>
52 #include <sys/protosw.h>
53 #include <sys/kernel.h>
55 #include <sys/syslog.h>
57 #include <net/route.h>
60 #include <netipx/ipx.h>
61 #include <netipx/ipx_pcb.h>
64 #include <netncp/ncp.h>
65 #include <netncp/ncp_conn.h>
66 #include <netncp/ncp_sock.h>
67 #include <netncp/ncp_subr.h>
68 #include <netncp/ncp_rq.h>
71 #define ipx_setnullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0);
72 #define ipx_setnullhost(x) ((x).x_host.s_host[0] = 0); \
73 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0);
76 /*int ncp_poll(struct socket *so, int events);*/
77 /*static int ncp_getsockname(struct socket *so, caddr_t asa, int *alen);*/
78 static int ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *p);
81 /* This will need only if native IP used, or (unlikely) NCP will be
82 * implemented on the socket level
85 ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *td) {
88 error = soconnect(so, (struct sockaddr*)target, td);
92 * Wait for the connection to complete. Cribbed from the
93 * connect system call but with the wait timing out so
94 * that interruptible mounts don't hang here for a long time.
98 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
99 (void) tsleep((caddr_t)&so->so_timeo, 0, "ncpcon", 2 * hz);
100 if ((so->so_state & SS_ISCONNECTING) &&
101 so->so_error == 0 /*&& rep &&*/) {
102 so->so_state &= ~SS_ISCONNECTING;
108 error = so->so_error;
120 ncp_getsockname(struct socket *so, caddr_t asa, int *alen) {
125 error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, &sa);
128 len = min(len, sa->sa_len);
129 bcopy(sa, (caddr_t)asa, (u_int)len);
138 int ncp_sock_recv(struct socket *so, struct mbuf **mp, int *rlen)
141 struct thread *td = curthread; /* XXX */
144 auio.uio_resid = len = 1000000;
146 flags = MSG_DONTWAIT;
148 /* error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, &auio,
149 (struct mbuf **)0, (struct mbuf **)0, &flags);*/
150 error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, &auio,
151 mp, (struct mbuf **)0, &flags);
152 *rlen = len - auio.uio_resid;
157 #ifdef NCP_SOCKET_DEBUG
159 printf("ncp_recv: err=%d\n", error);
165 ncp_sock_send(struct socket *so, struct mbuf *top, struct ncp_rq *rqp)
167 struct thread *td = curthread; /* XXX */
168 struct sockaddr *to = 0;
169 struct ncp_conn *conn = rqp->conn;
175 m = m_copym(top, 0, M_COPYALL, M_WAIT);
177 error = so->so_proto->pr_usrreqs->pru_sosend(so, to, 0, m, 0, flags, td);
178 if (error == 0 || error == EINTR || error == ENETDOWN)
180 if (rqp->rexmit == 0) break;
182 tsleep(&sendwait, 0, "ncprsn", conn->li.timeout * hz);
183 error = ncp_chkintr(conn, td);
184 if (error == EINTR) break;
187 log(LOG_INFO, "ncp_send: error %d for server %s", error, conn->li.server);
193 ncp_poll(struct socket *so, int events){
194 struct thread *td = curthread; /* XXX */
195 struct ucred *cred=NULL;
196 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, td);
200 ncp_sock_rselect(struct socket *so, struct thread *td,
201 struct timeval *tv, int events)
203 struct timeval atv,rtv,ttv;
204 struct proc *p = td->td_proc;
211 if (itimerfix(&atv)) {
215 getmicrouptime(&rtv);
216 timevaladd(&atv, &rtv);
220 p->p_flag |= P_SELECT;
221 error = ncp_poll(so, events);
227 getmicrouptime(&rtv);
228 if (timevalcmp(&rtv, &atv, >=))
231 timevalsub(&ttv, &rtv);
235 if ((p->p_flag & P_SELECT) == 0) {
239 p->p_flag &= ~P_SELECT;
240 error = tsleep((caddr_t)&selwait, 0, "ncpslt", timo);
243 p->p_flag &= ~P_SELECT;
244 if (error == ERESTART) {
245 /* printf("Signal: %x", CURSIG(p));*/
253 * Connect to specified server via IPX
256 ncp_sock_connect_ipx(struct ncp_conn *conn) {
257 struct sockaddr_ipx sipx;
259 struct thread *td = conn->td;
260 int addrlen, error, count;
262 sipx.sipx_port = htons(0);
264 for (count = 0;;count++) {
265 if (count > (IPXPORT_WELLKNOWN-IPXPORT_RESERVED)*2) {
269 conn->ncp_so = conn->wdg_so = NULL;
270 checkbad(socreate(AF_IPX, &conn->ncp_so, SOCK_DGRAM, 0, td));
271 if (conn->li.opt & NCP_OPT_WDOG)
272 checkbad(socreate(AF_IPX, &conn->wdg_so, SOCK_DGRAM,0,td));
273 addrlen = sizeof(sipx);
274 sipx.sipx_family = AF_IPX;
275 ipx_setnullnet(sipx.sipx_addr);
276 ipx_setnullhost(sipx.sipx_addr);
277 sipx.sipx_len = addrlen;
278 error = sobind(conn->ncp_so, (struct sockaddr *)&sipx, td);
280 if ((conn->li.opt & NCP_OPT_WDOG) == 0)
282 sipx.sipx_addr = sotoipxpcb(conn->ncp_so)->ipxp_laddr;
283 sipx.sipx_port = htons(ntohs(sipx.sipx_port) + 1);
284 ipx_setnullnet(sipx.sipx_addr);
285 ipx_setnullhost(sipx.sipx_addr);
286 error = sobind(conn->wdg_so, (struct sockaddr *)&sipx, td);
289 if (error != EADDRINUSE) goto bad;
290 sipx.sipx_port = htons((ntohs(sipx.sipx_port)+4) & 0xfff8);
291 soclose(conn->ncp_so);
293 soclose(conn->wdg_so);
295 npcb = sotoipxpcb(conn->ncp_so);
296 npcb->ipxp_dpt = IPXPROTO_NCP;
297 /* IPXrouted must be running, i.e. route must be presented */
298 conn->li.ipxaddr.sipx_len = sizeof(struct sockaddr_ipx);
299 checkbad(ncp_soconnect(conn->ncp_so, &conn->li.saddr, td));
301 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_net = npcb->ipxp_laddr.x_net;
302 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_host= npcb->ipxp_laddr.x_host;
305 conn->flags |= NCPFL_SOCONN;
308 if (ncp_burst_enabled) {
309 checkbad(socreate(AF_IPX, &conn->bc_so, SOCK_DGRAM, 0, td));
310 bzero(&sipx, sizeof(sipx));
311 sipx.sipx_len = sizeof(sipx);
312 checkbad(sobind(conn->bc_so, (struct sockaddr *)&sipx, td));
313 checkbad(ncp_soconnect(conn->bc_so, &conn->li.saddr, td));
317 conn->flags |= NCPFL_SOCONN;
318 ncp_sock_checksum(conn, 0);
322 ncp_sock_disconnect(conn);
327 ncp_sock_checksum(struct ncp_conn *conn, int enable) {
329 #ifdef SO_IPX_CHECKSUM
331 sotoipxpcb(conn->ncp_so)->ipxp_flags |= IPXP_CHECKSUM;
333 sotoipxpcb(conn->ncp_so)->ipxp_flags &= ~IPXP_CHECKSUM;
342 * Connect to specified server via IP
345 ncp_sock_connect_in(struct ncp_conn *conn) {
346 struct sockaddr_in sin;
347 struct thread *td = conn->td;
348 int addrlen=sizeof(sin), error;
352 conn->ncp_so = conn->wdg_so = NULL;
353 checkbad(socreate(AF_INET, &conn->ncp_so, SOCK_DGRAM, IPPROTO_UDP, td));
354 sin.sin_family = AF_INET;
355 sin.sin_len = addrlen;
356 checkbad(sobind(conn->ncp_so, (struct sockaddr *)&sin, td));
357 checkbad(ncp_soconnect(conn->ncp_so,(struct sockaddr*)&conn->li.addr, td));
359 conn->flags |= NCPFL_SOCONN;
362 ncp_sock_disconnect(conn);
369 * Connection expected to be locked
372 ncp_sock_disconnect(struct ncp_conn *conn) {
373 register struct socket *so;
374 conn->flags &= ~(NCPFL_SOCONN | NCPFL_ATTACHED | NCPFL_LOGGED);
377 conn->ncp_so = (struct socket *)0;
383 conn->wdg_so = (struct socket *)0;
390 conn->bc_so = (struct socket *)NULL;
400 ncp_watchdog(struct ncp_conn *conn) {
403 int error, len, flags;
409 while (conn->wdg_so) { /* not a loop */
411 auio.uio_resid = len = 1000000;
412 auio.uio_td = curthread;
413 flags = MSG_DONTWAIT;
414 error = so->so_proto->pr_usrreqs->pru_soreceive(so,
415 (struct sockaddr**)&sa, &auio, &m, (struct mbuf**)0, &flags);
417 len -= auio.uio_resid;
418 NCPSDEBUG("got watch dog %d\n",len);
420 buf = mtod(m, char*);
421 if (buf[1] != '?') break;
423 error = so->so_proto->pr_usrreqs->pru_sosend(so, (struct sockaddr*)sa, 0, m, 0, 0, curthread);
424 NCPSDEBUG("send watch dog %d\n",error);
427 if (sa) FREE(sa, M_SONAME);
433 ncp_check_conn(struct ncp_conn *conn) {
436 if (conn == NULL || !(conn->flags & NCPFL_ATTACHED))