1/*
2 * System-dependent procedures for pppd under Solaris 2.
3 *
4 * Parts re-written by Adi Masputra <adi.masputra@sun.com>, based on
5 * the original sys-svr4.c
6 *
7 * Copyright (c) 2000 by Sun Microsystems, Inc.
8 * All rights reserved.
9 *
10 * Permission to use, copy, modify, and distribute this software and its
11 * documentation is hereby granted, provided that the above copyright
12 * notice appears in all copies.
13 *
14 * SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF
15 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
16 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
17 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT.  SUN SHALL NOT BE LIABLE FOR
18 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
19 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES
20 *
21 * Copyright (c) 1995-2002 Paul Mackerras. All rights reserved.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 *
27 * 1. Redistributions of source code must retain the above copyright
28 *    notice, this list of conditions and the following disclaimer.
29 *
30 * 2. The name(s) of the authors of this software must not be used to
31 *    endorse or promote products derived from this software without
32 *    prior written permission.
33 *
34 * 3. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by Paul Mackerras
37 *     <paulus@samba.org>".
38 *
39 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
40 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
41 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
42 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
43 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
44 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
45 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
46 *
47 * Derived from main.c and pppd.h, which are:
48 *
49 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
50 *
51 * Redistribution and use in source and binary forms, with or without
52 * modification, are permitted provided that the following conditions
53 * are met:
54 *
55 * 1. Redistributions of source code must retain the above copyright
56 *    notice, this list of conditions and the following disclaimer.
57 *
58 * 2. Redistributions in binary form must reproduce the above copyright
59 *    notice, this list of conditions and the following disclaimer in
60 *    the documentation and/or other materials provided with the
61 *    distribution.
62 *
63 * 3. The name "Carnegie Mellon University" must not be used to
64 *    endorse or promote products derived from this software without
65 *    prior written permission. For permission or any legal
66 *    details, please contact
67 *      Office of Technology Transfer
68 *      Carnegie Mellon University
69 *      5000 Forbes Avenue
70 *      Pittsburgh, PA  15213-3890
71 *      (412) 268-4387, fax: (412) 268-7395
72 *      tech-transfer@andrew.cmu.edu
73 *
74 * 4. Redistributions of any form whatsoever must retain the following
75 *    acknowledgment:
76 *    "This product includes software developed by Computing Services
77 *     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
78 *
79 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
80 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
81 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
82 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
83 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
84 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
85 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
86 */
87
88#define RCSID	"$Id: sys-solaris.c,v 1.16 2008/01/30 14:26:53 carlsonj Exp $"
89
90#include <limits.h>
91#include <stdio.h>
92#include <stddef.h>
93#include <stdlib.h>
94#include <string.h>
95#include <ctype.h>
96#include <errno.h>
97#include <fcntl.h>
98#include <unistd.h>
99#include <termios.h>
100#ifndef CRTSCTS
101#include <sys/termiox.h>
102#endif
103#include <signal.h>
104#include <utmpx.h>
105#include <stropts.h>
106#include <sys/types.h>
107#include <sys/ioccom.h>
108#include <sys/stream.h>
109#include <sys/stropts.h>
110#include <sys/socket.h>
111#include <sys/sockio.h>
112#include <sys/sysmacros.h>
113#include <sys/systeminfo.h>
114#include <sys/dlpi.h>
115#include <sys/stat.h>
116#include <sys/mkdev.h>
117#include <net/if.h>
118#include <net/if_arp.h>
119#include <net/route.h>
120#include <net/ppp_defs.h>
121#include <net/pppio.h>
122#include <netinet/in.h>
123#ifdef SOL2
124#include <sys/tihdr.h>
125#include <sys/tiuser.h>
126#include <inet/common.h>
127#include <inet/mib2.h>
128#include <sys/ethernet.h>
129#endif
130
131#include "pppd.h"
132#include "fsm.h"
133#include "lcp.h"
134#include "ipcp.h"
135#include "ccp.h"
136
137#if !defined(PPP_DRV_NAME)
138#define PPP_DRV_NAME	"ppp"
139#endif /* !defined(PPP_DRV_NAME) */
140
141#if !defined(PPP_DEV_NAME)
142#define PPP_DEV_NAME	"/dev/" PPP_DRV_NAME
143#endif /* !defined(PPP_DEV_NAME) */
144
145#if !defined(AHDLC_MOD_NAME)
146#define AHDLC_MOD_NAME	"ppp_ahdl"
147#endif /* !defined(AHDLC_MOD_NAME) */
148
149#if !defined(COMP_MOD_NAME)
150#define COMP_MOD_NAME	"ppp_comp"
151#endif /* !defined(COMP_MOD_NAME) */
152
153#if !defined(IP_DEV_NAME)
154#define	IP_DEV_NAME	"/dev/ip"
155#endif /* !defined(IP_DEV_NAME) */
156
157#if !defined(IP_MOD_NAME)
158#define	IP_MOD_NAME	"ip"
159#endif /* !defined(IP_MOD_NAME) */
160
161#if !defined(UDP_DEV_NAME) && defined(SOL2)
162#define	UDP_DEV_NAME	"/dev/udp"
163#endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
164
165#if !defined(UDP6_DEV_NAME) && defined(SOL2)
166#define	UDP6_DEV_NAME	"/dev/udp6"
167#endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
168
169static const char rcsid[] = RCSID;
170
171#if defined(SOL2)
172/*
173 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
174 * under. It is used in place of "/dev/ip" since STREAMS will not let
175 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
176 * driver at the bottom of the tunneling interfaces stream.
177 */
178static char *mux_dev_name = UDP_DEV_NAME;
179#else
180static char *mux_dev_name = IP_DEV_NAME;
181#endif
182static int	pppfd;
183static int	fdmuxid = -1;
184static int	ipfd;
185static int	ipmuxid = -1;
186
187#if defined(INET6) && defined(SOL2)
188static int	ip6fd;		/* IP file descriptor */
189static int	ip6muxid = -1;	/* Multiplexer file descriptor */
190static int	if6_is_up = 0;	/* IPv6 interface has been marked up */
191
192#define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do {	\
193	s->sin6_addr.s6_addr32[0] = htonl(as); 	\
194	eui64_copy(eui64, s->sin6_addr.s6_addr32[2]);	\
195	s->sin6_family = AF_INET6;		\
196	l.lifr_addr.ss_family = AF_INET6;	\
197	l.lifr_addrlen = 64;			\
198	l.lifr_addr = laddr;			\
199	} while (0)
200
201#define IN6_LLADDR_FROM_EUI64(l, s, eui64)  \
202    _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
203
204#define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
205    _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
206
207#endif /* defined(INET6) && defined(SOL2) */
208
209#if defined(INET6) && defined(SOL2)
210static char	first_ether_name[LIFNAMSIZ];	/* Solaris 8 and above */
211#else
212static char	first_ether_name[IFNAMSIZ];	/* Before Solaris 8 */
213#define MAXIFS		256			/* Max # of interfaces */
214#endif /* defined(INET6) && defined(SOL2) */
215
216static int	restore_term;
217static struct termios inittermios;
218#ifndef CRTSCTS
219static struct termiox inittermiox;
220static int	termiox_ok;
221#endif
222static struct winsize wsinfo;	/* Initial window size info */
223static pid_t	tty_sid;	/* original session ID for terminal */
224
225extern u_char	inpacket_buf[];	/* borrowed from main.c */
226
227#define MAX_POLLFDS	32
228static struct pollfd pollfds[MAX_POLLFDS];
229static int n_pollfds;
230
231static int	link_mtu, link_mru;
232
233#define NMODULES	32
234static int	tty_nmodules;
235static char	tty_modules[NMODULES][FMNAMESZ+1];
236static int	tty_npushed;
237
238static int	if_is_up;	/* Interface has been marked up */
239static u_int32_t remote_addr;		/* IP address of peer */
240static u_int32_t default_route_gateway;	/* Gateway for default route added */
241static u_int32_t proxy_arp_addr;	/* Addr for proxy arp entry added */
242
243/* Prototypes for procedures local to this file. */
244static int translate_speed __P((int));
245static int baud_rate_of __P((int));
246static int get_ether_addr __P((u_int32_t, struct sockaddr *));
247static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
248static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
249static int dlpi_attach __P((int, int));
250static int dlpi_info_req __P((int));
251static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
252static int strioctl __P((int, int, void *, int, int));
253
254#ifdef SOL2
255/*
256 * sifppa - Sets interface ppa
257 *
258 * without setting the ppa, ip module will return EINVAL upon setting the
259 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
260 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
261 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
262 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
263 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
264 * is required because the ppp DLPI provider advertises itself as
265 * a DLPI style 2 type, which requires a point of attachment to be
266 * specified. The only way the user can specify a point of attachment
267 * is via SIOCSLIFNAME or IF_UNITSEL.
268 *
269 * Such changes in the behavior of ip module was made to meet new or
270 * evolving standards requirements.
271 *
272 */
273static int
274sifppa(fd, ppa)
275    int fd;
276    int ppa;
277{
278    return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
279}
280#endif /* SOL2 */
281
282#if defined(SOL2) && defined(INET6)
283/*
284 * get_first_ethernet - returns the first Ethernet interface name found in
285 * the system, or NULL if none is found
286 *
287 * NOTE: This is the lifreq version (Solaris 8 and above)
288 */
289char *
290get_first_ethernet()
291{
292    struct lifnum lifn;
293    struct lifconf lifc;
294    struct lifreq *plifreq;
295    struct lifreq lifr;
296    int	fd, num_ifs, i, found;
297    uint_t fl, req_size;
298    char *req;
299
300    fd = socket(AF_INET, SOCK_DGRAM, 0);
301    if (fd < 0) {
302	return 0;
303    }
304
305    /*
306     * Find out how many interfaces are running
307     */
308    lifn.lifn_family = AF_UNSPEC;
309    lifn.lifn_flags = LIFC_NOXMIT;
310    if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
311	close(fd);
312	error("could not determine number of interfaces: %m");
313	return 0;
314    }
315
316    num_ifs = lifn.lifn_count;
317    req_size = num_ifs * sizeof(struct lifreq);
318    req = malloc(req_size);
319    if (req == NULL) {
320	close(fd);
321	error("out of memory");
322	return 0;
323    }
324
325    /*
326     * Get interface configuration info for all interfaces
327     */
328    lifc.lifc_family = AF_UNSPEC;
329    lifc.lifc_flags = LIFC_NOXMIT;
330    lifc.lifc_len = req_size;
331    lifc.lifc_buf = req;
332    if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
333	close(fd);
334	free(req);
335	error("SIOCGLIFCONF: %m");
336	return 0;
337    }
338
339    /*
340     * And traverse each interface to look specifically for the first
341     * occurence of an Ethernet interface which has been marked up
342     */
343    plifreq = lifc.lifc_req;
344    found = 0;
345    for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) {
346
347	if (strchr(plifreq->lifr_name, ':') != NULL)
348	    continue;
349
350	memset(&lifr, 0, sizeof(lifr));
351	strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
352	if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
353	    close(fd);
354	    free(req);
355	    error("SIOCGLIFFLAGS: %m");
356	    return 0;
357	}
358	fl = lifr.lifr_flags;
359
360	if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
361		!= (IFF_UP | IFF_BROADCAST))
362	    continue;
363
364	found = 1;
365	break;
366    }
367    free(req);
368    close(fd);
369
370    if (found) {
371	strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name));
372	return (char *)first_ether_name;
373    } else
374	return NULL;
375}
376#else
377/*
378 * get_first_ethernet - returns the first Ethernet interface name found in
379 * the system, or NULL if none is found
380 *
381 * NOTE: This is the ifreq version (before Solaris 8).
382 */
383char *
384get_first_ethernet()
385{
386    struct ifconf ifc;
387    struct ifreq *pifreq;
388    struct ifreq ifr;
389    int	fd, num_ifs, i, found;
390    uint_t fl, req_size;
391    char *req;
392
393    fd = socket(AF_INET, SOCK_DGRAM, 0);
394    if (fd < 0) {
395	return 0;
396    }
397
398    /*
399     * Find out how many interfaces are running
400     */
401    if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) {
402	num_ifs = MAXIFS;
403    }
404
405    req_size = num_ifs * sizeof(struct ifreq);
406    req = malloc(req_size);
407    if (req == NULL) {
408	close(fd);
409	error("out of memory");
410	return 0;
411    }
412
413    /*
414     * Get interface configuration info for all interfaces
415     */
416    ifc.ifc_len = req_size;
417    ifc.ifc_buf = req;
418    if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
419	close(fd);
420	free(req);
421	error("SIOCGIFCONF: %m");
422	return 0;
423    }
424
425    /*
426     * And traverse each interface to look specifically for the first
427     * occurence of an Ethernet interface which has been marked up
428     */
429    pifreq = ifc.ifc_req;
430    found = 0;
431    for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) {
432
433	if (strchr(pifreq->ifr_name, ':') != NULL)
434	    continue;
435
436	memset(&ifr, 0, sizeof(ifr));
437	strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name));
438	if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
439	    close(fd);
440	    free(req);
441	    error("SIOCGIFFLAGS: %m");
442	    return 0;
443	}
444	fl = ifr.ifr_flags;
445
446	if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
447		!= (IFF_UP | IFF_BROADCAST))
448	    continue;
449
450	found = 1;
451	break;
452    }
453    free(req);
454    close(fd);
455
456    if (found) {
457	strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name));
458	return (char *)first_ether_name;
459    } else
460	return NULL;
461}
462#endif /* defined(SOL2) && defined(INET6) */
463
464#if defined(SOL2)
465/*
466 * get_if_hwaddr - get the hardware address for the specified
467 * network interface device.
468 */
469int
470get_if_hwaddr(u_char *addr, char *if_name)
471{
472    struct sockaddr s_eth_addr;
473    struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
474
475    if (if_name == NULL)
476	return -1;
477
478    /*
479     * Send DL_INFO_REQ to the driver to solicit its MAC address
480     */
481    if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
482	error("could not obtain hardware address for %s", if_name);
483	return -1;
484    }
485
486    memcpy(addr, eth_addr->ether_addr_octet, 6);
487    return 1;
488}
489#endif /* SOL2 */
490
491#if defined(SOL2) && defined(INET6)
492/*
493 * slifname - Sets interface ppa and flags
494 *
495 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
496 * be set in order to declare this as an IPv6 interface
497 */
498static int
499slifname(fd, ppa)
500    int fd;
501    int ppa;
502{
503    struct  lifreq lifr;
504    int	    ret;
505
506    memset(&lifr, 0, sizeof(lifr));
507    ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
508    if (ret < 0)
509	goto slifname_done;
510
511    lifr.lifr_flags |= IFF_IPV6;
512    lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
513    lifr.lifr_ppa = ppa;
514    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
515
516    ret = ioctl(fd, SIOCSLIFNAME, &lifr);
517
518slifname_done:
519    return ret;
520
521
522}
523
524
525/*
526 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
527 *
528 * walks the list of valid ethernet interfaces, and convert the first
529 * found 48-bit MAC address into EUI 64. caller also assumes that
530 * the system has a properly configured Ethernet interface for this
531 * function to return non-zero.
532 */
533int
534ether_to_eui64(eui64_t *p_eui64)
535{
536    struct sockaddr s_eth_addr;
537    struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
538    char *if_name;
539
540    if ((if_name = get_first_ethernet()) == NULL) {
541	error("no persistent id can be found");
542	return 0;
543    }
544
545    /*
546     * Send DL_INFO_REQ to the driver to solicit its MAC address
547     */
548    if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
549	error("could not obtain hardware address for %s", if_name);
550	return 0;
551    }
552
553    /*
554     * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
555     */
556    p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
557    p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
558    p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
559    p_eui64->e8[3] = 0xFF;
560    p_eui64->e8[4] = 0xFE;
561    p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
562    p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
563    p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
564
565    return 1;
566}
567#endif /* defined(SOL2) && defined(INET6) */
568
569/*
570 * sys_init - System-dependent initialization.
571 */
572void
573sys_init()
574{
575    int ifd, x;
576    struct ifreq ifr;
577#if defined(INET6) && defined(SOL2)
578    int i6fd;
579    struct lifreq lifr;
580#endif /* defined(INET6) && defined(SOL2) */
581#if !defined(SOL2)
582    struct {
583	union DL_primitives prim;
584	char space[64];
585    } reply;
586#endif /* !defined(SOL2) */
587
588    ipfd = open(mux_dev_name, O_RDWR, 0);
589    if (ipfd < 0)
590	fatal("Couldn't open IP device: %m");
591
592#if defined(INET6) && defined(SOL2)
593    ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
594    if (ip6fd < 0)
595	fatal("Couldn't open IP device (2): %m");
596#endif /* defined(INET6) && defined(SOL2) */
597
598    if (default_device && !notty)
599	tty_sid = getsid((pid_t)0);
600
601    pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
602    if (pppfd < 0)
603	fatal("Can't open %s: %m", PPP_DEV_NAME);
604    if (kdebugflag & 1) {
605	x = PPPDBG_LOG + PPPDBG_DRIVER;
606	strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
607    }
608
609    /* Assign a new PPA and get its unit number. */
610    if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
611	fatal("Can't create new PPP interface: %m");
612
613#if defined(SOL2)
614    /*
615     * Since sys_init() is called prior to ifname being set in main(),
616     * we need to get the ifname now, otherwise slifname(), and others,
617     * will fail, or maybe, I should move them to a later point ?
618     * <adi.masputra@sun.com>
619     */
620    sprintf(ifname, PPP_DRV_NAME "%d", ifunit);
621#endif /* defined(SOL2) */
622    /*
623     * Open the ppp device again and link it under the ip multiplexor.
624     * IP will assign a unit number which hopefully is the same as ifunit.
625     * I don't know any way to be certain they will be the same. :-(
626     */
627    ifd = open(PPP_DEV_NAME, O_RDWR, 0);
628    if (ifd < 0)
629	fatal("Can't open %s (2): %m", PPP_DEV_NAME);
630    if (kdebugflag & 1) {
631	x = PPPDBG_LOG + PPPDBG_DRIVER;
632	strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
633    }
634
635#if defined(INET6) && defined(SOL2)
636    i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
637    if (i6fd < 0) {
638	close(ifd);
639	fatal("Can't open %s (3): %m", PPP_DEV_NAME);
640    }
641    if (kdebugflag & 1) {
642	x = PPPDBG_LOG + PPPDBG_DRIVER;
643	strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
644    }
645#endif /* defined(INET6) && defined(SOL2) */
646
647#if defined(SOL2)
648    if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
649	close(ifd);
650#if defined(INET6)
651	close(i6fd);
652#endif /* defined(INET6) */
653	fatal("Can't push IP module: %m");
654    }
655
656    /*
657     * Assign ppa according to the unit number returned by ppp device
658     * after plumbing is completed above.
659     */
660    if (sifppa(ifd, ifunit) < 0) {
661        close (ifd);
662#if defined(INET6)
663	close(i6fd);
664#endif /* defined(INET6) */
665        fatal("Can't set ppa for unit %d: %m", ifunit);
666    }
667
668#if defined(INET6)
669    /*
670     * An IPv6 interface is created anyway, even when the user does not
671     * explicitly enable it. Note that the interface will be marked
672     * IPv6 during slifname().
673     */
674    if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
675	close(ifd);
676	close(i6fd);
677	fatal("Can't push IP module (2): %m");
678    }
679
680    /*
681     * Assign ppa according to the unit number returned by ppp device
682     * after plumbing is completed above. In addition, mark the interface
683     * as an IPv6 interface.
684     */
685    if (slifname(i6fd, ifunit) < 0) {
686	close(ifd);
687	close(i6fd);
688	fatal("Can't set ifname for unit %d: %m", ifunit);
689    }
690#endif /* defined(INET6) */
691
692    ipmuxid = ioctl(ipfd, I_PLINK, ifd);
693    close(ifd);
694    if (ipmuxid < 0) {
695#if defined(INET6)
696	close(i6fd);
697#endif /* defined(INET6) */
698	fatal("Can't I_PLINK PPP device to IP: %m");
699    }
700
701    memset(&ifr, 0, sizeof(ifr));
702    sprintf(ifr.ifr_name, "%s", ifname);
703    ifr.ifr_ip_muxid = ipmuxid;
704
705    /*
706     * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
707     * This is so that an arbitrary module can be inserted, or deleted,
708     * between ip module and the device driver without tearing down the
709     * existing stream. Such feature requires the mux ids, which is set
710     * by SIOCSIFMUXID (or SIOCLSIFMUXID).
711     */
712    if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
713	ioctl(ipfd, I_PUNLINK, ipmuxid);
714#if defined(INET6)
715	close(i6fd);
716#endif /* defined(INET6) */
717	fatal("SIOCSIFMUXID: %m");
718    }
719
720#else /* else if !defined(SOL2) */
721
722    if (dlpi_attach(ifd, ifunit) < 0 ||
723	dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
724	close(ifd);
725	fatal("Can't attach to ppp%d: %m", ifunit);
726    }
727
728    ipmuxid = ioctl(ipfd, I_LINK, ifd);
729    close(ifd);
730    if (ipmuxid < 0)
731	fatal("Can't link PPP device to IP: %m");
732#endif /* defined(SOL2) */
733
734#if defined(INET6) && defined(SOL2)
735    ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
736    close(i6fd);
737    if (ip6muxid < 0) {
738	ioctl(ipfd, I_PUNLINK, ipmuxid);
739	fatal("Can't I_PLINK PPP device to IP (2): %m");
740    }
741
742    memset(&lifr, 0, sizeof(lifr));
743    sprintf(lifr.lifr_name, "%s", ifname);
744    lifr.lifr_ip_muxid = ip6muxid;
745
746    /*
747     * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
748     */
749    if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
750	ioctl(ipfd, I_PUNLINK, ipmuxid);
751	ioctl(ip6fd, I_PUNLINK, ip6muxid);
752	fatal("Can't link PPP device to IP (2): %m");
753    }
754#endif /* defined(INET6) && defined(SOL2) */
755
756#if !defined(SOL2)
757    /* Set the interface name for the link. */
758    slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), PPP_DRV_NAME "%d", ifunit);
759    ifr.ifr_metric = ipmuxid;
760    if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
761	fatal("Can't set interface name %s: %m", ifr.ifr_name);
762#endif /* !defined(SOL2) */
763
764    n_pollfds = 0;
765}
766
767/*
768 * sys_cleanup - restore any system state we modified before exiting:
769 * mark the interface down, delete default route and/or proxy arp entry.
770 * This should call die() because it's called from die().
771 */
772void
773sys_cleanup()
774{
775#if defined(SOL2)
776    struct ifreq ifr;
777#if defined(INET6)
778    struct lifreq lifr;
779#endif /* defined(INET6) */
780#endif /* defined(SOL2) */
781
782#if defined(SOL2) && defined(INET6)
783    if (if6_is_up)
784	sif6down(0);
785#endif /* defined(SOL2) && defined(INET6) */
786    if (if_is_up)
787	sifdown(0);
788    if (default_route_gateway)
789	cifdefaultroute(0, default_route_gateway, default_route_gateway);
790    if (proxy_arp_addr)
791	cifproxyarp(0, proxy_arp_addr);
792#if defined(SOL2)
793    /*
794     * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
795     * unlink and re-link the modules, causing the muxid to change.
796     */
797    memset(&ifr, 0, sizeof(ifr));
798    sprintf(ifr.ifr_name, "%s", ifname);
799    if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
800	error("SIOCGIFFLAGS: %m");
801	return;
802    }
803
804    if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
805	error("SIOCGIFMUXID: %m");
806	return;
807    }
808
809    ipmuxid = ifr.ifr_ip_muxid;
810
811    if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
812	error("Can't I_PUNLINK PPP from IP: %m");
813	return;
814    }
815#if defined(INET6)
816    /*
817     * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
818     * unlink and re-link the modules, causing the muxid to change.
819     */
820    memset(&lifr, 0, sizeof(lifr));
821    sprintf(lifr.lifr_name, "%s", ifname);
822    if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
823	error("SIOCGLIFFLAGS: %m");
824	return;
825    }
826
827    if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
828	error("SIOCGLIFMUXID: %m");
829	return;
830    }
831
832    ip6muxid = lifr.lifr_ip_muxid;
833
834    if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
835	error("Can't I_PUNLINK PPP from IP (2): %m");
836    }
837#endif /* defined(INET6) */
838#endif /* defined(SOL2) */
839}
840
841/*
842 * sys_close - Clean up in a child process before execing.
843 */
844void
845sys_close()
846{
847    close(ipfd);
848#if defined(INET6) && defined(SOL2)
849    close(ip6fd);
850#endif /* defined(INET6) && defined(SOL2) */
851    if (pppfd >= 0)
852	close(pppfd);
853}
854
855/*
856 * sys_check_options - check the options that the user specified
857 */
858int
859sys_check_options()
860{
861    return 1;
862}
863
864#if 0
865/*
866 * daemon - Detach us from controlling terminal session.
867 */
868int
869daemon(nochdir, noclose)
870    int nochdir, noclose;
871{
872    int pid;
873
874    if ((pid = fork()) < 0)
875	return -1;
876    if (pid != 0)
877	exit(0);		/* parent dies */
878    setsid();
879    if (!nochdir)
880	chdir("/");
881    if (!noclose) {
882	fclose(stdin);		/* don't need stdin, stdout, stderr */
883	fclose(stdout);
884	fclose(stderr);
885    }
886    return 0;
887}
888#endif
889
890/*
891 * ppp_available - check whether the system has any ppp interfaces
892 */
893int
894ppp_available()
895{
896    struct stat buf;
897
898    return stat(PPP_DEV_NAME, &buf) >= 0;
899}
900
901/*
902 * any_compressions - see if compression is enabled or not
903 *
904 * In the STREAMS implementation of kernel-portion pppd,
905 * the comp STREAMS module performs the ACFC, PFC, as well
906 * CCP and VJ compressions. However, if the user has explicitly
907 * declare to not enable them from the command line, there is
908 * no point of having the comp module be pushed on the stream.
909 */
910static int
911any_compressions()
912{
913    if ((!lcp_wantoptions[0].neg_accompression) &&
914	(!lcp_wantoptions[0].neg_pcompression) &&
915	(!ccp_protent.enabled_flag) &&
916	(!ipcp_wantoptions[0].neg_vj)) {
917	    return 0;
918    }
919    return 1;
920}
921
922/*
923 * tty_establish_ppp - Turn the serial port into a ppp interface.
924 */
925int
926tty_establish_ppp(fd)
927    int fd;
928{
929    int i;
930
931    /* Pop any existing modules off the tty stream. */
932    for (i = 0;; ++i)
933	if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
934	    || strcmp(tty_modules[i], "ptem") == 0
935	    || ioctl(fd, I_POP, 0) < 0)
936	    break;
937    tty_nmodules = i;
938
939    /* Push the async hdlc module and the compressor module. */
940    tty_npushed = 0;
941
942    if(!sync_serial) {
943        if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
944            error("Couldn't push PPP Async HDLC module: %m");
945	    return -1;
946        }
947        ++tty_npushed;
948    }
949    if (kdebugflag & 4) {
950	i = PPPDBG_LOG + PPPDBG_AHDLC;
951	strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
952    }
953    /*
954     * There's no need to push comp module if we don't intend
955     * to compress anything
956     */
957    if (any_compressions()) {
958        if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
959	    error("Couldn't push PPP compression module: %m");
960	else
961	    ++tty_npushed;
962    }
963
964    if (kdebugflag & 2) {
965	i = PPPDBG_LOG;
966	if (any_compressions())
967	    i += PPPDBG_COMP;
968	strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
969    }
970
971    /* Link the serial port under the PPP multiplexor. */
972    if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
973	error("Can't link tty to PPP mux: %m");
974	return -1;
975    }
976
977    return pppfd;
978}
979
980/*
981 * tty_disestablish_ppp - Restore the serial port to normal operation.
982 * It attempts to reconstruct the stream with the previously popped
983 * modules.  This shouldn't call die() because it's called from die().
984 */
985void
986tty_disestablish_ppp(fd)
987    int fd;
988{
989    int i;
990
991    if (fdmuxid >= 0) {
992	if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
993	    if (!hungup)
994		error("Can't unlink tty from PPP mux: %m");
995	}
996	fdmuxid = -1;
997
998	if (!hungup) {
999	    while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
1000		--tty_npushed;
1001	    for (i = tty_nmodules - 1; i >= 0; --i)
1002		if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
1003		    error("Couldn't restore tty module %s: %m",
1004			   tty_modules[i]);
1005	}
1006	if (hungup && default_device && tty_sid > 0) {
1007	    /*
1008	     * If we have received a hangup, we need to send a SIGHUP
1009	     * to the terminal's controlling process.  The reason is
1010	     * that the original stream head for the terminal hasn't
1011	     * seen the M_HANGUP message (it went up through the ppp
1012	     * driver to the stream head for our fd to /dev/ppp).
1013	     */
1014	    kill(tty_sid, SIGHUP);
1015	}
1016    }
1017}
1018
1019/*
1020 * Check whether the link seems not to be 8-bit clean.
1021 */
1022void
1023clean_check()
1024{
1025    int x;
1026    char *s;
1027
1028    if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
1029	return;
1030    s = NULL;
1031    switch (~x) {
1032    case RCV_B7_0:
1033	s = "bit 7 set to 1";
1034	break;
1035    case RCV_B7_1:
1036	s = "bit 7 set to 0";
1037	break;
1038    case RCV_EVNP:
1039	s = "odd parity";
1040	break;
1041    case RCV_ODDP:
1042	s = "even parity";
1043	break;
1044    }
1045    if (s != NULL) {
1046	warn("Serial link is not 8-bit clean:");
1047	warn("All received characters had %s", s);
1048    }
1049}
1050
1051/*
1052 * List of valid speeds.
1053 */
1054struct speed {
1055    int speed_int, speed_val;
1056} speeds[] = {
1057#ifdef B50
1058    { 50, B50 },
1059#endif
1060#ifdef B75
1061    { 75, B75 },
1062#endif
1063#ifdef B110
1064    { 110, B110 },
1065#endif
1066#ifdef B134
1067    { 134, B134 },
1068#endif
1069#ifdef B150
1070    { 150, B150 },
1071#endif
1072#ifdef B200
1073    { 200, B200 },
1074#endif
1075#ifdef B300
1076    { 300, B300 },
1077#endif
1078#ifdef B600
1079    { 600, B600 },
1080#endif
1081#ifdef B1200
1082    { 1200, B1200 },
1083#endif
1084#ifdef B1800
1085    { 1800, B1800 },
1086#endif
1087#ifdef B2000
1088    { 2000, B2000 },
1089#endif
1090#ifdef B2400
1091    { 2400, B2400 },
1092#endif
1093#ifdef B3600
1094    { 3600, B3600 },
1095#endif
1096#ifdef B4800
1097    { 4800, B4800 },
1098#endif
1099#ifdef B7200
1100    { 7200, B7200 },
1101#endif
1102#ifdef B9600
1103    { 9600, B9600 },
1104#endif
1105#ifdef B19200
1106    { 19200, B19200 },
1107#endif
1108#ifdef B38400
1109    { 38400, B38400 },
1110#endif
1111#ifdef EXTA
1112    { 19200, EXTA },
1113#endif
1114#ifdef EXTB
1115    { 38400, EXTB },
1116#endif
1117#ifdef B57600
1118    { 57600, B57600 },
1119#endif
1120#ifdef B76800
1121    { 76800, B76800 },
1122#endif
1123#ifdef B115200
1124    { 115200, B115200 },
1125#endif
1126#ifdef B153600
1127    { 153600, B153600 },
1128#endif
1129#ifdef B230400
1130    { 230400, B230400 },
1131#endif
1132#ifdef B307200
1133    { 307200, B307200 },
1134#endif
1135#ifdef B460800
1136    { 460800, B460800 },
1137#endif
1138    { 0, 0 }
1139};
1140
1141/*
1142 * Translate from bits/second to a speed_t.
1143 */
1144static int
1145translate_speed(bps)
1146    int bps;
1147{
1148    struct speed *speedp;
1149
1150    if (bps == 0)
1151	return 0;
1152    for (speedp = speeds; speedp->speed_int; speedp++)
1153	if (bps == speedp->speed_int)
1154	    return speedp->speed_val;
1155    warn("speed %d not supported", bps);
1156    return 0;
1157}
1158
1159/*
1160 * Translate from a speed_t to bits/second.
1161 */
1162static int
1163baud_rate_of(speed)
1164    int speed;
1165{
1166    struct speed *speedp;
1167
1168    if (speed == 0)
1169	return 0;
1170    for (speedp = speeds; speedp->speed_int; speedp++)
1171	if (speed == speedp->speed_val)
1172	    return speedp->speed_int;
1173    return 0;
1174}
1175
1176/*
1177 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
1178 * at the requested speed, etc.  If `local' is true, set CLOCAL
1179 * regardless of whether the modem option was specified.
1180 */
1181void
1182set_up_tty(fd, local)
1183    int fd, local;
1184{
1185    int speed;
1186    struct termios tios;
1187#if !defined (CRTSCTS)
1188    struct termiox tiox;
1189#endif
1190
1191    if (!sync_serial && tcgetattr(fd, &tios) < 0)
1192	fatal("tcgetattr: %m");
1193
1194#ifndef CRTSCTS
1195    termiox_ok = 1;
1196    if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1197	termiox_ok = 0;
1198	if (errno != ENOTTY)
1199	    error("TCGETX: %m");
1200    }
1201#endif
1202
1203    if (!restore_term) {
1204	inittermios = tios;
1205#ifndef CRTSCTS
1206	inittermiox = tiox;
1207#endif
1208	if (!sync_serial)
1209	    ioctl(fd, TIOCGWINSZ, &wsinfo);
1210    }
1211
1212    tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1213#ifdef CRTSCTS
1214    if (crtscts > 0)
1215	tios.c_cflag |= CRTSCTS;
1216    else if (crtscts < 0)
1217	tios.c_cflag &= ~CRTSCTS;
1218#else
1219    if (crtscts != 0 && !termiox_ok) {
1220	error("Can't set RTS/CTS flow control");
1221    } else if (crtscts > 0) {
1222	tiox.x_hflag |= RTSXOFF|CTSXON;
1223    } else if (crtscts < 0) {
1224	tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1225    }
1226#endif
1227
1228    if (stop_bits >= 2)
1229	tios.c_cflag |= CSTOPB;
1230
1231    tios.c_cflag |= CS8 | CREAD | HUPCL;
1232    if (local || !modem)
1233	tios.c_cflag |= CLOCAL;
1234    tios.c_iflag = IGNBRK | IGNPAR;
1235    tios.c_oflag = 0;
1236    tios.c_lflag = 0;
1237    tios.c_cc[VMIN] = 1;
1238    tios.c_cc[VTIME] = 0;
1239
1240    if (crtscts == -2) {
1241	tios.c_iflag |= IXON | IXOFF;
1242	tios.c_cc[VSTOP] = 0x13;	/* DC3 = XOFF = ^S */
1243	tios.c_cc[VSTART] = 0x11;	/* DC1 = XON  = ^Q */
1244    }
1245
1246    speed = translate_speed(inspeed);
1247    if (speed) {
1248	cfsetospeed(&tios, speed);
1249	cfsetispeed(&tios, speed);
1250    } else {
1251	speed = cfgetospeed(&tios);
1252	/*
1253	 * We can't proceed if the serial port speed is 0,
1254	 * since that implies that the serial port is disabled.
1255	 */
1256	if ((speed == B0) && !sync_serial)
1257	    fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1258    }
1259
1260    if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1261	fatal("tcsetattr: %m");
1262
1263#ifndef CRTSCTS
1264    if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1265	error("TCSETXF: %m");
1266    }
1267#endif
1268
1269    baud_rate = inspeed = baud_rate_of(speed);
1270    if (!sync_serial)
1271	restore_term = 1;
1272}
1273
1274/*
1275 * restore_tty - restore the terminal to the saved settings.
1276 */
1277void
1278restore_tty(fd)
1279    int fd;
1280{
1281    if (restore_term) {
1282	if (!default_device) {
1283	    /*
1284	     * Turn off echoing, because otherwise we can get into
1285	     * a loop with the tty and the modem echoing to each other.
1286	     * We presume we are the sole user of this tty device, so
1287	     * when we close it, it will revert to its defaults anyway.
1288	     */
1289	    inittermios.c_lflag &= ~(ECHO | ECHONL);
1290	}
1291	if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1292	    if (!hungup && errno != ENXIO)
1293		warn("tcsetattr: %m");
1294#ifndef CRTSCTS
1295	if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1296	    if (!hungup && errno != ENXIO)
1297		error("TCSETXF: %m");
1298	}
1299#endif
1300	if (!sync_serial)
1301	    ioctl(fd, TIOCSWINSZ, &wsinfo);
1302	restore_term = 0;
1303    }
1304}
1305
1306/*
1307 * setdtr - control the DTR line on the serial port.
1308 * This is called from die(), so it shouldn't call die().
1309 */
1310void
1311setdtr(fd, on)
1312int fd, on;
1313{
1314    int modembits = TIOCM_DTR;
1315
1316    ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1317}
1318
1319/*
1320 * open_loopback - open the device we use for getting packets
1321 * in demand mode.  Under Solaris 2, we use our existing fd
1322 * to the ppp driver.
1323 */
1324int
1325open_ppp_loopback()
1326{
1327    return pppfd;
1328}
1329
1330/*
1331 * output - Output PPP packet.
1332 */
1333void
1334output(unit, p, len)
1335    int unit;
1336    u_char *p;
1337    int len;
1338{
1339    struct strbuf data;
1340    int retries;
1341    struct pollfd pfd;
1342
1343    dump_packet("sent", p, len);
1344    if (snoop_send_hook) snoop_send_hook(p, len);
1345
1346    data.len = len;
1347    data.buf = (caddr_t) p;
1348    retries = 4;
1349    while (putmsg(pppfd, NULL, &data, 0) < 0) {
1350	if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1351	    if (errno != ENXIO)
1352		error("Couldn't send packet: %m");
1353	    break;
1354	}
1355	pfd.fd = pppfd;
1356	pfd.events = POLLOUT;
1357	poll(&pfd, 1, 250);	/* wait for up to 0.25 seconds */
1358    }
1359}
1360
1361
1362/*
1363 * wait_input - wait until there is data available,
1364 * for the length of time specified by *timo (indefinite
1365 * if timo is NULL).
1366 */
1367void
1368wait_input(timo)
1369    struct timeval *timo;
1370{
1371    int t;
1372
1373    t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1374    if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1375	fatal("poll: %m");
1376}
1377
1378/*
1379 * add_fd - add an fd to the set that wait_input waits for.
1380 */
1381void add_fd(fd)
1382    int fd;
1383{
1384    int n;
1385
1386    for (n = 0; n < n_pollfds; ++n)
1387	if (pollfds[n].fd == fd)
1388	    return;
1389    if (n_pollfds < MAX_POLLFDS) {
1390	pollfds[n_pollfds].fd = fd;
1391	pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1392	++n_pollfds;
1393    } else
1394	error("Too many inputs!");
1395}
1396
1397/*
1398 * remove_fd - remove an fd from the set that wait_input waits for.
1399 */
1400void remove_fd(fd)
1401    int fd;
1402{
1403    int n;
1404
1405    for (n = 0; n < n_pollfds; ++n) {
1406	if (pollfds[n].fd == fd) {
1407	    while (++n < n_pollfds)
1408		pollfds[n-1] = pollfds[n];
1409	    --n_pollfds;
1410	    break;
1411	}
1412    }
1413}
1414
1415#if 0
1416/*
1417 * wait_loop_output - wait until there is data available on the
1418 * loopback, for the length of time specified by *timo (indefinite
1419 * if timo is NULL).
1420 */
1421void
1422wait_loop_output(timo)
1423    struct timeval *timo;
1424{
1425    wait_input(timo);
1426}
1427
1428/*
1429 * wait_time - wait for a given length of time or until a
1430 * signal is received.
1431 */
1432void
1433wait_time(timo)
1434    struct timeval *timo;
1435{
1436    int n;
1437
1438    n = select(0, NULL, NULL, NULL, timo);
1439    if (n < 0 && errno != EINTR)
1440	fatal("select: %m");
1441}
1442#endif
1443
1444
1445/*
1446 * read_packet - get a PPP packet from the serial device.
1447 */
1448int
1449read_packet(buf)
1450    u_char *buf;
1451{
1452    struct strbuf ctrl, data;
1453    int flags, len;
1454    unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1455
1456    for (;;) {
1457	data.maxlen = PPP_MRU + PPP_HDRLEN;
1458	data.buf = (caddr_t) buf;
1459	ctrl.maxlen = sizeof(ctrlbuf);
1460	ctrl.buf = (caddr_t) ctrlbuf;
1461	flags = 0;
1462	len = getmsg(pppfd, &ctrl, &data, &flags);
1463	if (len < 0) {
1464	    if (errno == EAGAIN || errno == EINTR)
1465		return -1;
1466	    fatal("Error reading packet: %m");
1467	}
1468
1469	if (ctrl.len <= 0)
1470	    return data.len;
1471
1472	/*
1473	 * Got a M_PROTO or M_PCPROTO message.  Interpret it
1474	 * as a DLPI primitive??
1475	 */
1476	if (debug)
1477	    dbglog("got dlpi prim 0x%x, len=%d",
1478		   ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1479
1480    }
1481}
1482
1483/*
1484 * get_loop_output - get outgoing packets from the ppp device,
1485 * and detect when we want to bring the real link up.
1486 * Return value is 1 if we need to bring up the link, 0 otherwise.
1487 */
1488int
1489get_loop_output()
1490{
1491    int len;
1492    int rv = 0;
1493
1494    while ((len = read_packet(inpacket_buf)) > 0) {
1495	if (loop_frame(inpacket_buf, len))
1496	    rv = 1;
1497    }
1498    return rv;
1499}
1500
1501/*
1502 * netif_set_mtu - set the MTU on the PPP network interface.
1503 */
1504void
1505netif_set_mtu(unit, mtu)
1506    int unit, mtu;
1507{
1508    struct ifreq ifr;
1509#if defined(INET6) && defined(SOL2)
1510    struct lifreq lifr;
1511    int	fd;
1512#endif /* defined(INET6) && defined(SOL2) */
1513
1514    memset(&ifr, 0, sizeof(ifr));
1515    strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1516    ifr.ifr_metric = link_mtu;
1517    if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1518	error("Couldn't set IP MTU (%s): %m", ifr.ifr_name);
1519    }
1520
1521#if defined(INET6) && defined(SOL2)
1522    fd = socket(AF_INET6, SOCK_DGRAM, 0);
1523    if (fd < 0)
1524	error("Couldn't open IPv6 socket: %m");
1525
1526    memset(&lifr, 0, sizeof(lifr));
1527    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1528    lifr.lifr_mtu = link_mtu;
1529    if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1530	close(fd);
1531	error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name);
1532    }
1533    close(fd);
1534#endif /* defined(INET6) && defined(SOL2) */
1535}
1536
1537/*
1538 * tty_send_config - configure the transmit characteristics of
1539 * the ppp interface.
1540 */
1541void
1542tty_send_config(mtu, asyncmap, pcomp, accomp)
1543    int mtu;
1544    u_int32_t asyncmap;
1545    int pcomp, accomp;
1546{
1547    int cf[2];
1548
1549    link_mtu = mtu;
1550    if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1551	if (hungup && errno == ENXIO) {
1552	    ++error_count;
1553	    return;
1554	}
1555	error("Couldn't set MTU: %m");
1556    }
1557    if (fdmuxid >= 0) {
1558	if (!sync_serial) {
1559	    if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
1560		error("Couldn't set transmit ACCM: %m");
1561	}
1562	cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1563	cf[1] = COMP_PROT | COMP_AC;
1564	if (any_compressions() &&
1565	    strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
1566	    error("Couldn't set prot/AC compression: %m");
1567    }
1568}
1569
1570/*
1571 * tty_set_xaccm - set the extended transmit ACCM for the interface.
1572 */
1573void
1574tty_set_xaccm(accm)
1575    ext_accm accm;
1576{
1577    if (sync_serial)
1578	return;
1579
1580    if (fdmuxid >= 0
1581	&& strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1582	if (!hungup || errno != ENXIO)
1583	    warn("Couldn't set extended ACCM: %m");
1584    }
1585}
1586
1587/*
1588 * tty_recv_config - configure the receive-side characteristics of
1589 * the ppp interface.
1590 */
1591void
1592tty_recv_config(mru, asyncmap, pcomp, accomp)
1593    int mru;
1594    u_int32_t asyncmap;
1595    int pcomp, accomp;
1596{
1597    int cf[2];
1598
1599    link_mru = mru;
1600    if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1601	if (hungup && errno == ENXIO) {
1602	    ++error_count;
1603	    return;
1604	}
1605	error("Couldn't set MRU: %m");
1606    }
1607    if (fdmuxid >= 0) {
1608	if (!sync_serial) {
1609	    if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
1610		error("Couldn't set receive ACCM: %m");
1611	}
1612	cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1613	cf[1] = DECOMP_PROT | DECOMP_AC;
1614	if (any_compressions() &&
1615	    strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
1616	    error("Couldn't set prot/AC decompression: %m");
1617    }
1618}
1619
1620/*
1621 * ccp_test - ask kernel whether a given compression method
1622 * is acceptable for use.
1623 */
1624int
1625ccp_test(unit, opt_ptr, opt_len, for_transmit)
1626    int unit, opt_len, for_transmit;
1627    u_char *opt_ptr;
1628{
1629    if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1630		 opt_ptr, opt_len, 0) >= 0)
1631	return 1;
1632    return (errno == ENOSR)? 0: -1;
1633}
1634
1635/*
1636 * ccp_flags_set - inform kernel about the current state of CCP.
1637 */
1638void
1639ccp_flags_set(unit, isopen, isup)
1640    int unit, isopen, isup;
1641{
1642    int cf[2];
1643
1644    cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1645    cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1646    if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1647	if (!hungup || errno != ENXIO)
1648	    error("Couldn't set kernel CCP state: %m");
1649    }
1650}
1651
1652/*
1653 * get_idle_time - return how long the link has been idle.
1654 */
1655int
1656get_idle_time(u, ip)
1657    int u;
1658    struct ppp_idle *ip;
1659{
1660    return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1661}
1662
1663/*
1664 * get_ppp_stats - return statistics for the link.
1665 */
1666int
1667get_ppp_stats(u, stats)
1668    int u;
1669    struct pppd_stats *stats;
1670{
1671    struct ppp_stats s;
1672
1673    if (!sync_serial &&
1674	strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1675	error("Couldn't get link statistics: %m");
1676	return 0;
1677    }
1678    stats->bytes_in = s.p.ppp_ibytes;
1679    stats->bytes_out = s.p.ppp_obytes;
1680    stats->pkts_in = s.p.ppp_ipackets;
1681    stats->pkts_out = s.p.ppp_opackets;
1682    return 1;
1683}
1684
1685#if 0
1686/*
1687 * set_filters - transfer the pass and active filters to the kernel.
1688 */
1689int
1690set_filters(pass, active)
1691    struct bpf_program *pass, *active;
1692{
1693    int ret = 1;
1694
1695    if (pass->bf_len > 0) {
1696	if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1697		     sizeof(struct bpf_program), 0) < 0) {
1698	    error("Couldn't set pass-filter in kernel: %m");
1699	    ret = 0;
1700	}
1701    }
1702    if (active->bf_len > 0) {
1703	if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1704		     sizeof(struct bpf_program), 0) < 0) {
1705	    error("Couldn't set active-filter in kernel: %m");
1706	    ret = 0;
1707	}
1708    }
1709    return ret;
1710}
1711#endif
1712
1713/*
1714 * ccp_fatal_error - returns 1 if decompression was disabled as a
1715 * result of an error detected after decompression of a packet,
1716 * 0 otherwise.  This is necessary because of patent nonsense.
1717 */
1718int
1719ccp_fatal_error(unit)
1720    int unit;
1721{
1722    int cf[2];
1723
1724    cf[0] = cf[1] = 0;
1725    if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1726	if (errno != ENXIO && errno != EINVAL)
1727	    error("Couldn't get compression flags: %m");
1728	return 0;
1729    }
1730    return cf[0] & CCP_FATALERROR;
1731}
1732
1733/*
1734 * sifvjcomp - config tcp header compression
1735 */
1736int
1737sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1738    int u, vjcomp, xcidcomp, xmaxcid;
1739{
1740    int cf[2];
1741    char maxcid[2];
1742
1743    if (vjcomp) {
1744	maxcid[0] = xcidcomp;
1745	maxcid[1] = 15;		/* XXX should be rmaxcid */
1746	if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1747	    error("Couldn't initialize VJ compression: %m");
1748	}
1749    }
1750
1751    cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0)	/* XXX this is wrong */
1752	+ (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1753    cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1754    if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1755	if (vjcomp)
1756	    error("Couldn't enable VJ compression: %m");
1757    }
1758
1759    return 1;
1760}
1761
1762/*
1763 * sifup - Config the interface up and enable IP packets to pass.
1764 */
1765int
1766sifup(u)
1767    int u;
1768{
1769    struct ifreq ifr;
1770
1771    strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1772    if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1773	error("Couldn't mark interface up (get): %m");
1774	return 0;
1775    }
1776    ifr.ifr_flags |= IFF_UP;
1777    if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1778	error("Couldn't mark interface up (set): %m");
1779	return 0;
1780    }
1781    if_is_up = 1;
1782    return 1;
1783}
1784
1785/*
1786 * sifdown - Config the interface down and disable IP.
1787 */
1788int
1789sifdown(u)
1790    int u;
1791{
1792    struct ifreq ifr;
1793
1794    if (ipmuxid < 0)
1795	return 1;
1796    strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1797    if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1798	error("Couldn't mark interface down (get): %m");
1799	return 0;
1800    }
1801    ifr.ifr_flags &= ~IFF_UP;
1802    if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1803	error("Couldn't mark interface down (set): %m");
1804	return 0;
1805    }
1806    if_is_up = 0;
1807    return 1;
1808}
1809
1810/*
1811 * sifnpmode - Set the mode for handling packets for a given NP.
1812 */
1813int
1814sifnpmode(u, proto, mode)
1815    int u;
1816    int proto;
1817    enum NPmode mode;
1818{
1819    int npi[2];
1820
1821    npi[0] = proto;
1822    npi[1] = (int) mode;
1823    if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1824	error("ioctl(set NP %d mode to %d): %m", proto, mode);
1825	return 0;
1826    }
1827    return 1;
1828}
1829
1830#if defined(SOL2) && defined(INET6)
1831/*
1832 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1833 */
1834int
1835sif6up(u)
1836    int u;
1837{
1838    struct lifreq lifr;
1839    int fd;
1840
1841    fd = socket(AF_INET6, SOCK_DGRAM, 0);
1842    if (fd < 0) {
1843	return 0;
1844    }
1845
1846    memset(&lifr, 0, sizeof(lifr));
1847    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1848    if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1849	close(fd);
1850	return 0;
1851    }
1852
1853    lifr.lifr_flags |= IFF_UP;
1854    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1855    if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1856	close(fd);
1857	return 0;
1858    }
1859
1860    if6_is_up = 1;
1861    close(fd);
1862    return 1;
1863}
1864
1865/*
1866 * sifdown - Config the IPv6 interface down and disable IPv6.
1867 */
1868int
1869sif6down(u)
1870    int u;
1871{
1872    struct lifreq lifr;
1873    int fd;
1874
1875    fd = socket(AF_INET6, SOCK_DGRAM, 0);
1876    if (fd < 0)
1877	return 0;
1878
1879    memset(&lifr, 0, sizeof(lifr));
1880    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1881    if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1882	close(fd);
1883	return 0;
1884    }
1885
1886    lifr.lifr_flags &= ~IFF_UP;
1887    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1888    if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1889	close(fd);
1890	return 0;
1891    }
1892
1893    if6_is_up = 0;
1894    close(fd);
1895    return 1;
1896}
1897
1898/*
1899 * sif6addr - Config the interface with an IPv6 link-local address
1900 */
1901int
1902sif6addr(u, o, h)
1903    int u;
1904    eui64_t o, h;
1905{
1906    struct lifreq lifr;
1907    struct sockaddr_storage laddr;
1908    struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1909    int fd;
1910
1911    fd = socket(AF_INET6, SOCK_DGRAM, 0);
1912    if (fd < 0)
1913	return 0;
1914
1915    memset(&lifr, 0, sizeof(lifr));
1916    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1917
1918    /*
1919     * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1920     * zero values, hence the interface token came to be zero too,
1921     * and without this, in.ndpd will complain
1922     */
1923    IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1924    if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1925	close(fd);
1926	return 0;
1927    }
1928
1929    /*
1930     * Set the interface address and destination address
1931     */
1932    IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1933    if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1934	close(fd);
1935	return 0;
1936    }
1937
1938    memset(&lifr, 0, sizeof(lifr));
1939    strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1940    IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1941    if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1942	close(fd);
1943	return 0;
1944    }
1945
1946    return 1;
1947}
1948
1949/*
1950 * cif6addr - Remove the IPv6 address from interface
1951 */
1952int
1953cif6addr(u, o, h)
1954    int u;
1955    eui64_t o, h;
1956{
1957    return 1;
1958}
1959
1960#endif /* defined(SOL2) && defined(INET6) */
1961
1962
1963#define INET_ADDR(x)	(((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1964
1965/*
1966 * sifaddr - Config the interface IP addresses and netmask.
1967 */
1968int
1969sifaddr(u, o, h, m)
1970    int u;
1971    u_int32_t o, h, m;
1972{
1973    struct ifreq ifr;
1974    int ret = 1;
1975
1976    memset(&ifr, 0, sizeof(ifr));
1977    strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1978    ifr.ifr_addr.sa_family = AF_INET;
1979    INET_ADDR(ifr.ifr_addr) = m;
1980    if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1981	error("Couldn't set IP netmask: %m");
1982	ret = 0;
1983    }
1984    ifr.ifr_addr.sa_family = AF_INET;
1985    INET_ADDR(ifr.ifr_addr) = o;
1986    if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1987	error("Couldn't set local IP address: %m");
1988	ret = 0;
1989    }
1990
1991    /*
1992     * On some systems, we have to explicitly set the point-to-point
1993     * flag bit before we can set a destination address.
1994     */
1995    if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1996	&& (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1997	ifr.ifr_flags |= IFF_POINTOPOINT;
1998	if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1999	    error("Couldn't mark interface pt-to-pt: %m");
2000	    ret = 0;
2001	}
2002    }
2003    ifr.ifr_dstaddr.sa_family = AF_INET;
2004    INET_ADDR(ifr.ifr_dstaddr) = h;
2005    if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
2006	error("Couldn't set remote IP address: %m");
2007	ret = 0;
2008    }
2009
2010    remote_addr = h;
2011    return ret;
2012}
2013
2014/*
2015 * cifaddr - Clear the interface IP addresses, and delete routes
2016 * through the interface if possible.
2017 */
2018int
2019cifaddr(u, o, h)
2020    int u;
2021    u_int32_t o, h;
2022{
2023#if defined(__USLC__)		/* was: #if 0 */
2024    cifroute(unit, ouraddr, hisaddr);
2025    if (ipmuxid >= 0) {
2026	notice("Removing ppp interface unit");
2027	if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
2028	    error("Can't remove ppp interface unit: %m");
2029	    return 0;
2030	}
2031	ipmuxid = -1;
2032    }
2033#endif
2034    remote_addr = 0;
2035    return 1;
2036}
2037
2038/*
2039 * sifdefaultroute - assign a default route through the address given.
2040 */
2041int
2042sifdefaultroute(u, l, g)
2043    int u;
2044    u_int32_t l, g;
2045{
2046    struct rtentry rt;
2047
2048#if defined(__USLC__)
2049    g = l;			/* use the local address as gateway */
2050#endif
2051    memset(&rt, 0, sizeof(rt));
2052    rt.rt_dst.sa_family = AF_INET;
2053    INET_ADDR(rt.rt_dst) = 0;
2054    rt.rt_gateway.sa_family = AF_INET;
2055    INET_ADDR(rt.rt_gateway) = g;
2056    rt.rt_flags = RTF_GATEWAY;
2057
2058    if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2059	error("Can't add default route: %m");
2060	return 0;
2061    }
2062
2063    default_route_gateway = g;
2064    return 1;
2065}
2066
2067/*
2068 * cifdefaultroute - delete a default route through the address given.
2069 */
2070int
2071cifdefaultroute(u, l, g)
2072    int u;
2073    u_int32_t l, g;
2074{
2075    struct rtentry rt;
2076
2077#if defined(__USLC__)
2078    g = l;			/* use the local address as gateway */
2079#endif
2080    memset(&rt, 0, sizeof(rt));
2081    rt.rt_dst.sa_family = AF_INET;
2082    INET_ADDR(rt.rt_dst) = 0;
2083    rt.rt_gateway.sa_family = AF_INET;
2084    INET_ADDR(rt.rt_gateway) = g;
2085    rt.rt_flags = RTF_GATEWAY;
2086
2087    if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2088	error("Can't delete default route: %m");
2089	return 0;
2090    }
2091
2092    default_route_gateway = 0;
2093    return 1;
2094}
2095
2096/*
2097 * sifproxyarp - Make a proxy ARP entry for the peer.
2098 */
2099int
2100sifproxyarp(unit, hisaddr)
2101    int unit;
2102    u_int32_t hisaddr;
2103{
2104    struct arpreq arpreq;
2105
2106    memset(&arpreq, 0, sizeof(arpreq));
2107    if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2108	return 0;
2109
2110    arpreq.arp_pa.sa_family = AF_INET;
2111    INET_ADDR(arpreq.arp_pa) = hisaddr;
2112    arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2113    if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2114	error("Couldn't set proxy ARP entry: %m");
2115	return 0;
2116    }
2117
2118    proxy_arp_addr = hisaddr;
2119    return 1;
2120}
2121
2122/*
2123 * cifproxyarp - Delete the proxy ARP entry for the peer.
2124 */
2125int
2126cifproxyarp(unit, hisaddr)
2127    int unit;
2128    u_int32_t hisaddr;
2129{
2130    struct arpreq arpreq;
2131
2132    memset(&arpreq, 0, sizeof(arpreq));
2133    arpreq.arp_pa.sa_family = AF_INET;
2134    INET_ADDR(arpreq.arp_pa) = hisaddr;
2135    if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2136	error("Couldn't delete proxy ARP entry: %m");
2137	return 0;
2138    }
2139
2140    proxy_arp_addr = 0;
2141    return 1;
2142}
2143
2144/*
2145 * get_ether_addr - get the hardware address of an interface on the
2146 * the same subnet as ipaddr.
2147 */
2148#define MAX_IFS		32
2149
2150static int
2151get_ether_addr(ipaddr, hwaddr)
2152    u_int32_t ipaddr;
2153    struct sockaddr *hwaddr;
2154{
2155    struct ifreq *ifr, *ifend, ifreq;
2156    int nif;
2157    struct ifconf ifc;
2158    u_int32_t ina, mask;
2159
2160    /*
2161     * Scan through the system's network interfaces.
2162     */
2163#ifdef SIOCGIFNUM
2164    if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2165#endif
2166	nif = MAX_IFS;
2167    ifc.ifc_len = nif * sizeof(struct ifreq);
2168    ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2169    if (ifc.ifc_buf == 0)
2170	return 0;
2171    if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2172	warn("Couldn't get system interface list: %m");
2173	free(ifc.ifc_buf);
2174	return 0;
2175    }
2176    ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2177    for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2178	if (ifr->ifr_addr.sa_family != AF_INET)
2179	    continue;
2180	/*
2181	 * Check that the interface is up, and not point-to-point or loopback.
2182	 */
2183	strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2184	if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2185	    continue;
2186	if ((ifreq.ifr_flags &
2187	     (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2188	    != (IFF_UP|IFF_BROADCAST))
2189	    continue;
2190	/*
2191	 * Get its netmask and check that it's on the right subnet.
2192	 */
2193	if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2194	    continue;
2195	ina = INET_ADDR(ifr->ifr_addr);
2196	mask = INET_ADDR(ifreq.ifr_addr);
2197	if ((ipaddr & mask) == (ina & mask))
2198	    break;
2199    }
2200
2201    if (ifr >= ifend) {
2202	warn("No suitable interface found for proxy ARP");
2203	free(ifc.ifc_buf);
2204	return 0;
2205    }
2206
2207    info("found interface %s for proxy ARP", ifr->ifr_name);
2208    if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2209	error("Couldn't get hardware address for %s", ifr->ifr_name);
2210	free(ifc.ifc_buf);
2211	return 0;
2212    }
2213
2214    free(ifc.ifc_buf);
2215    return 1;
2216}
2217
2218/*
2219 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2220 */
2221static int
2222get_hw_addr_dlpi(name, hwaddr)
2223    char *name;
2224    struct sockaddr *hwaddr;
2225{
2226    char *q;
2227    int unit, iffd, adrlen;
2228    unsigned char *adrp;
2229    char ifdev[24];
2230    struct {
2231	union DL_primitives prim;
2232	char space[64];
2233    } reply;
2234
2235    /*
2236     * We have to open the device and ask it for its hardware address.
2237     * First split apart the device name and unit.
2238     */
2239    slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2240    for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2241	if (!isdigit(*q))
2242	    break;
2243    unit = atoi(q+1);
2244    q[1] = 0;
2245
2246    /*
2247     * Open the device and do a DLPI attach and phys_addr_req.
2248     */
2249    iffd = open(ifdev, O_RDWR);
2250    if (iffd < 0) {
2251	error("Can't open %s: %m", ifdev);
2252	return 0;
2253    }
2254    if (dlpi_attach(iffd, unit) < 0
2255	|| dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2256	|| dlpi_info_req(iffd) < 0
2257	|| dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2258	close(iffd);
2259	return 0;
2260    }
2261
2262    adrlen = reply.prim.info_ack.dl_addr_length;
2263    adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2264
2265#if DL_CURRENT_VERSION >= 2
2266    if (reply.prim.info_ack.dl_sap_length < 0)
2267	adrlen += reply.prim.info_ack.dl_sap_length;
2268    else
2269	adrp += reply.prim.info_ack.dl_sap_length;
2270#endif
2271
2272    hwaddr->sa_family = AF_UNSPEC;
2273    memcpy(hwaddr->sa_data, adrp, adrlen);
2274
2275    return 1;
2276}
2277/*
2278 * get_hw_addr - obtain the hardware address for a named interface.
2279 */
2280static int
2281get_hw_addr(name, ina, hwaddr)
2282    char *name;
2283    u_int32_t ina;
2284    struct sockaddr *hwaddr;
2285{
2286    /* New way - get the address by doing an arp request. */
2287    int s;
2288    struct arpreq req;
2289
2290    s = socket(AF_INET, SOCK_DGRAM, 0);
2291    if (s < 0)
2292	return 0;
2293    memset(&req, 0, sizeof(req));
2294    req.arp_pa.sa_family = AF_INET;
2295    INET_ADDR(req.arp_pa) = ina;
2296    if (ioctl(s, SIOCGARP, &req) < 0) {
2297	error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2298	return 0;
2299    }
2300    *hwaddr = req.arp_ha;
2301    hwaddr->sa_family = AF_UNSPEC;
2302
2303    return 1;
2304}
2305
2306static int
2307dlpi_attach(fd, ppa)
2308    int fd, ppa;
2309{
2310    dl_attach_req_t req;
2311    struct strbuf buf;
2312
2313    req.dl_primitive = DL_ATTACH_REQ;
2314    req.dl_ppa = ppa;
2315    buf.len = sizeof(req);
2316    buf.buf = (void *) &req;
2317    return putmsg(fd, &buf, NULL, RS_HIPRI);
2318}
2319
2320static int
2321dlpi_info_req(fd)
2322    int fd;
2323{
2324    dl_info_req_t req;
2325    struct strbuf buf;
2326
2327    req.dl_primitive = DL_INFO_REQ;
2328    buf.len = sizeof(req);
2329    buf.buf = (void *) &req;
2330    return putmsg(fd, &buf, NULL, RS_HIPRI);
2331}
2332
2333static int
2334dlpi_get_reply(fd, reply, expected_prim, maxlen)
2335    union DL_primitives *reply;
2336    int fd, expected_prim, maxlen;
2337{
2338    struct strbuf buf;
2339    int flags, n;
2340    struct pollfd pfd;
2341
2342    /*
2343     * Use poll to wait for a message with a timeout.
2344     */
2345    pfd.fd = fd;
2346    pfd.events = POLLIN | POLLPRI;
2347    do {
2348	n = poll(&pfd, 1, 1000);
2349    } while (n == -1 && errno == EINTR);
2350    if (n <= 0)
2351	return -1;
2352
2353    /*
2354     * Get the reply.
2355     */
2356    buf.maxlen = maxlen;
2357    buf.buf = (void *) reply;
2358    flags = 0;
2359    if (getmsg(fd, &buf, NULL, &flags) < 0)
2360	return -1;
2361
2362    if (buf.len < sizeof(ulong)) {
2363	if (debug)
2364	    dbglog("dlpi response short (len=%d)\n", buf.len);
2365	return -1;
2366    }
2367
2368    if (reply->dl_primitive == expected_prim)
2369	return 0;
2370
2371    if (debug) {
2372	if (reply->dl_primitive == DL_ERROR_ACK) {
2373	    dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2374		   reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2375		   reply->error_ack.dl_error_primitive);
2376	} else {
2377	    dbglog("dlpi unexpected response prim %x\n",
2378		   reply->dl_primitive);
2379	}
2380    }
2381
2382    return -1;
2383}
2384
2385/*
2386 * Return user specified netmask, modified by any mask we might determine
2387 * for address `addr' (in network byte order).
2388 * Here we scan through the system's list of interfaces, looking for
2389 * any non-point-to-point interfaces which might appear to be on the same
2390 * network as `addr'.  If we find any, we OR in their netmask to the
2391 * user-specified netmask.
2392 */
2393u_int32_t
2394GetMask(addr)
2395    u_int32_t addr;
2396{
2397    u_int32_t mask, nmask, ina;
2398    struct ifreq *ifr, *ifend, ifreq;
2399    int nif;
2400    struct ifconf ifc;
2401
2402    addr = ntohl(addr);
2403    if (IN_CLASSA(addr))	/* determine network mask for address class */
2404	nmask = IN_CLASSA_NET;
2405    else if (IN_CLASSB(addr))
2406	nmask = IN_CLASSB_NET;
2407    else
2408	nmask = IN_CLASSC_NET;
2409    /* class D nets are disallowed by bad_ip_adrs */
2410    mask = netmask | htonl(nmask);
2411
2412    /*
2413     * Scan through the system's network interfaces.
2414     */
2415#ifdef SIOCGIFNUM
2416    if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2417#endif
2418	nif = MAX_IFS;
2419    ifc.ifc_len = nif * sizeof(struct ifreq);
2420    ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2421    if (ifc.ifc_buf == 0)
2422	return mask;
2423    if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2424	warn("Couldn't get system interface list: %m");
2425	free(ifc.ifc_buf);
2426	return mask;
2427    }
2428    ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2429    for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2430	/*
2431	 * Check the interface's internet address.
2432	 */
2433	if (ifr->ifr_addr.sa_family != AF_INET)
2434	    continue;
2435	ina = INET_ADDR(ifr->ifr_addr);
2436	if ((ntohl(ina) & nmask) != (addr & nmask))
2437	    continue;
2438	/*
2439	 * Check that the interface is up, and not point-to-point or loopback.
2440	 */
2441	strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2442	if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2443	    continue;
2444	if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2445	    != IFF_UP)
2446	    continue;
2447	/*
2448	 * Get its netmask and OR it into our mask.
2449	 */
2450	if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2451	    continue;
2452	mask |= INET_ADDR(ifreq.ifr_addr);
2453    }
2454
2455    free(ifc.ifc_buf);
2456    return mask;
2457}
2458
2459/*
2460 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2461 */
2462void
2463logwtmp(line, name, host)
2464    const char *line, *name, *host;
2465{
2466    static struct utmpx utmpx;
2467
2468    if (name[0] != 0) {
2469	/* logging in */
2470	strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2471	strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2472	strncpy(utmpx.ut_host, host, sizeof(utmpx.ut_host));
2473	if (*host != '\0') {
2474	    utmpx.ut_syslen = strlen(host) + 1;
2475	    if (utmpx.ut_syslen > sizeof(utmpx.ut_host))
2476		utmpx.ut_syslen = sizeof(utmpx.ut_host);
2477	}
2478	utmpx.ut_pid = getpid();
2479	utmpx.ut_type = USER_PROCESS;
2480    } else {
2481	utmpx.ut_type = DEAD_PROCESS;
2482    }
2483    gettimeofday(&utmpx.ut_tv, NULL);
2484    updwtmpx("/var/adm/wtmpx", &utmpx);
2485}
2486
2487/*
2488 * get_host_seed - return the serial number of this machine.
2489 */
2490int
2491get_host_seed()
2492{
2493    char buf[32];
2494
2495    if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2496	error("sysinfo: %m");
2497	return 0;
2498    }
2499    return (int) strtoul(buf, NULL, 16);
2500}
2501
2502static int
2503strioctl(fd, cmd, ptr, ilen, olen)
2504    int fd, cmd, ilen, olen;
2505    void *ptr;
2506{
2507    struct strioctl str;
2508
2509    str.ic_cmd = cmd;
2510    str.ic_timout = 0;
2511    str.ic_len = ilen;
2512    str.ic_dp = ptr;
2513    if (ioctl(fd, I_STR, &str) == -1)
2514	return -1;
2515    if (str.ic_len != olen)
2516	dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2517	       olen, str.ic_len, cmd);
2518    return 0;
2519}
2520
2521#if 0
2522/*
2523 * lock - create a lock file for the named lock device
2524 */
2525
2526#define LOCK_PREFIX	"/var/spool/locks/LK."
2527static char lock_file[40];	/* name of lock file created */
2528
2529int
2530lock(dev)
2531    char *dev;
2532{
2533    int n, fd, pid;
2534    struct stat sbuf;
2535    char ascii_pid[12];
2536
2537    if (stat(dev, &sbuf) < 0) {
2538	error("Can't get device number for %s: %m", dev);
2539	return -1;
2540    }
2541    if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2542	error("Can't lock %s: not a character device", dev);
2543	return -1;
2544    }
2545    slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2546	     LOCK_PREFIX, major(sbuf.st_dev),
2547	     major(sbuf.st_rdev), minor(sbuf.st_rdev));
2548
2549    while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2550	if (errno == EEXIST
2551	    && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2552	    /* Read the lock file to find out who has the device locked */
2553	    n = read(fd, ascii_pid, 11);
2554	    if (n <= 0) {
2555		error("Can't read pid from lock file %s", lock_file);
2556		close(fd);
2557	    } else {
2558		ascii_pid[n] = 0;
2559		pid = atoi(ascii_pid);
2560		if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2561		    /* pid no longer exists - remove the lock file */
2562		    if (unlink(lock_file) == 0) {
2563			close(fd);
2564			notice("Removed stale lock on %s (pid %d)",
2565			       dev, pid);
2566			continue;
2567		    } else
2568			warn("Couldn't remove stale lock on %s",
2569			       dev);
2570		} else
2571		    notice("Device %s is locked by pid %d",
2572			   dev, pid);
2573	    }
2574	    close(fd);
2575	} else
2576	    error("Can't create lock file %s: %m", lock_file);
2577	lock_file[0] = 0;
2578	return -1;
2579    }
2580
2581    slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2582    write(fd, ascii_pid, 11);
2583
2584    close(fd);
2585    return 1;
2586}
2587
2588/*
2589 * unlock - remove our lockfile
2590 */
2591void
2592unlock()
2593{
2594    if (lock_file[0]) {
2595	unlink(lock_file);
2596	lock_file[0] = 0;
2597    }
2598}
2599#endif
2600
2601/*
2602 * cifroute - delete a route through the addresses given.
2603 */
2604int
2605cifroute(u, our, his)
2606    int u;
2607    u_int32_t our, his;
2608{
2609    struct rtentry rt;
2610
2611    memset(&rt, 0, sizeof(rt));
2612    rt.rt_dst.sa_family = AF_INET;
2613    INET_ADDR(rt.rt_dst) = his;
2614    rt.rt_gateway.sa_family = AF_INET;
2615    INET_ADDR(rt.rt_gateway) = our;
2616    rt.rt_flags = RTF_HOST;
2617
2618    if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2619	error("Can't delete route: %m");
2620	return 0;
2621    }
2622
2623    return 1;
2624}
2625
2626/*
2627 * have_route_to - determine if the system has a route to the specified
2628 * IP address.  Returns 0 if not, 1 if so, -1 if we can't tell.
2629 * `addr' is in network byte order.
2630 * For demand mode to work properly, we have to ignore routes
2631 * through our own interface.
2632 */
2633#ifndef T_CURRENT		/* needed for Solaris 2.5 */
2634#define T_CURRENT	MI_T_CURRENT
2635#endif
2636
2637int
2638have_route_to(addr)
2639    u_int32_t addr;
2640{
2641#ifdef SOL2
2642    int fd, r, flags, i;
2643    struct {
2644	struct T_optmgmt_req req;
2645	struct opthdr hdr;
2646    } req;
2647    union {
2648	struct T_optmgmt_ack ack;
2649	unsigned char space[64];
2650    } ack;
2651    struct opthdr *rh;
2652    struct strbuf cbuf, dbuf;
2653    int nroutes;
2654    mib2_ipRouteEntry_t routes[8];
2655    mib2_ipRouteEntry_t *rp;
2656
2657    fd = open(mux_dev_name, O_RDWR);
2658    if (fd < 0) {
2659	warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2660	return -1;
2661    }
2662
2663    req.req.PRIM_type = T_OPTMGMT_REQ;
2664    req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2665    req.req.OPT_length = sizeof(req.hdr);
2666    req.req.MGMT_flags = T_CURRENT;
2667
2668    req.hdr.level = MIB2_IP;
2669    req.hdr.name = 0;
2670    req.hdr.len = 0;
2671
2672    cbuf.buf = (char *) &req;
2673    cbuf.len = sizeof(req);
2674
2675    if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2676	warn("have_route_to: putmsg: %m");
2677	close(fd);
2678	return -1;
2679    }
2680
2681    for (;;) {
2682	cbuf.buf = (char *) &ack;
2683	cbuf.maxlen = sizeof(ack);
2684	dbuf.buf = (char *) routes;
2685	dbuf.maxlen = sizeof(routes);
2686	flags = 0;
2687	r = getmsg(fd, &cbuf, &dbuf, &flags);
2688	if (r == -1) {
2689	    warn("have_route_to: getmsg: %m");
2690	    close(fd);
2691	    return -1;
2692	}
2693
2694	if (cbuf.len < sizeof(struct T_optmgmt_ack)
2695	    || ack.ack.PRIM_type != T_OPTMGMT_ACK
2696	    || ack.ack.MGMT_flags != T_SUCCESS
2697	    || ack.ack.OPT_length < sizeof(struct opthdr)) {
2698	    dbglog("have_route_to: bad message len=%d prim=%d",
2699		   cbuf.len, ack.ack.PRIM_type);
2700	    close(fd);
2701	    return -1;
2702	}
2703
2704	rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2705	if (rh->level == 0 && rh->name == 0)
2706	    break;
2707	if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2708	    while (r == MOREDATA)
2709		r = getmsg(fd, NULL, &dbuf, &flags);
2710	    continue;
2711	}
2712
2713	for (;;) {
2714	    nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2715	    for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2716		if (rp->ipRouteMask != ~0) {
2717		    dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2718			   rp->ipRouteDest, rp->ipRouteNextHop,
2719			   rp->ipRouteMask);
2720		    if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2721			&& rp->ipRouteNextHop != remote_addr)
2722			return 1;
2723		}
2724	    }
2725	    if (r == 0)
2726		break;
2727	    r = getmsg(fd, NULL, &dbuf, &flags);
2728	}
2729    }
2730    close(fd);
2731    return 0;
2732#else
2733    return -1;
2734#endif /* SOL2 */
2735}
2736
2737/*
2738 * get_pty - get a pty master/slave pair and chown the slave side to
2739 * the uid given.  Assumes slave_name points to MAXPATHLEN bytes of space.
2740 */
2741int
2742get_pty(master_fdp, slave_fdp, slave_name, uid)
2743    int *master_fdp;
2744    int *slave_fdp;
2745    char *slave_name;
2746    int uid;
2747{
2748    int mfd, sfd;
2749    char *pty_name;
2750
2751    mfd = open("/dev/ptmx", O_RDWR);
2752    if (mfd < 0) {
2753	error("Couldn't open pty master: %m");
2754	return 0;
2755    }
2756
2757    pty_name = ptsname(mfd);
2758    if (pty_name == NULL) {
2759	error("Couldn't get name of pty slave");
2760	close(mfd);
2761	return 0;
2762    }
2763    if (chown(pty_name, uid, -1) < 0)
2764	warn("Couldn't change owner of pty slave: %m");
2765    if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2766	warn("Couldn't change permissions on pty slave: %m");
2767    if (unlockpt(mfd) < 0)
2768	warn("Couldn't unlock pty slave: %m");
2769
2770    sfd = open(pty_name, O_RDWR);
2771    if (sfd < 0) {
2772	error("Couldn't open pty slave %s: %m", pty_name);
2773	close(mfd);
2774	return 0;
2775    }
2776    if (ioctl(sfd, I_PUSH, "ptem") < 0)
2777	warn("Couldn't push ptem module on pty slave: %m");
2778
2779    dbglog("Using %s", pty_name);
2780    strlcpy(slave_name, pty_name, MAXPATHLEN);
2781    *master_fdp = mfd;
2782    *slave_fdp = sfd;
2783
2784    return 1;
2785}
2786