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 1.13 2004/11/04 10:02:26 paulus 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
169 static 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 */
178 static char *mux_dev_name = UDP_DEV_NAME;
179 #else
180 static char *mux_dev_name = IP_DEV_NAME;
181 #endif
182 static int pppfd;
183 static int fdmuxid = -1;
184 static int ipfd;
185 static int ipmuxid = -1;
186
187 #if defined(INET6) && defined(SOL2)
188 static int ip6fd; /* IP file descriptor */
189 static int ip6muxid = -1; /* Multiplexer file descriptor */
190 static 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 = 10; \
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)
210 static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */
211 #else
212 static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */
213 #define MAXIFS 256 /* Max # of interfaces */
214 #endif /* defined(INET6) && defined(SOL2) */
215
216 static int restore_term;
217 static struct termios inittermios;
218 #ifndef CRTSCTS
219 static struct termiox inittermiox;
220 static int termiox_ok;
221 #endif
222 static struct winsize wsinfo; /* Initial window size info */
223 static pid_t tty_sid; /* original session ID for terminal */
224
225 extern u_char inpacket_buf[]; /* borrowed from main.c */
226
227 #define MAX_POLLFDS 32
228 static struct pollfd pollfds[MAX_POLLFDS];
229 static int n_pollfds;
230
231 static int link_mtu, link_mru;
232
233 #define NMODULES 32
234 static int tty_nmodules;
235 static char tty_modules[NMODULES][FMNAMESZ+1];
236 static int tty_npushed;
237
238 static int if_is_up; /* Interface has been marked up */
239 static u_int32_t remote_addr; /* IP address of peer */
240 static u_int32_t default_route_gateway; /* Gateway for default route added */
241 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
242
243 /* Prototypes for procedures local to this file. */
244 static int translate_speed __P((int));
245 static int baud_rate_of __P((int));
246 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
247 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
248 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
249 static int dlpi_attach __P((int, int));
250 static int dlpi_info_req __P((int));
251 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
252 static 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 */
273 static int
sifppa(fd,ppa)274 sifppa(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 */
289 char *
get_first_ethernet()290 get_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 */
383 char *
get_first_ethernet()384 get_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 */
469 int
get_if_hwaddr(u_char * addr,char * if_name)470 get_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 */
498 static int
slifname(fd,ppa)499 slifname(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
518 slifname_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 */
533 int
ether_to_eui64(eui64_t * p_eui64)534 ether_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 */
572 void
sys_init()573 sys_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 */
772 void
sys_cleanup()773 sys_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 */
844 void
sys_close()845 sys_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 */
858 int
sys_check_options()859 sys_check_options()
860 {
861 return 1;
862 }
863
864 #if 0
865 /*
866 * daemon - Detach us from controlling terminal session.
867 */
868 int
869 daemon(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 */
893 int
ppp_available()894 ppp_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 */
910 static int
any_compressions()911 any_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 */
925 int
tty_establish_ppp(fd)926 tty_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 */
985 void
tty_disestablish_ppp(fd)986 tty_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 */
1022 void
clean_check()1023 clean_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 */
1054 struct 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 */
1144 static int
translate_speed(bps)1145 translate_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 */
1162 static int
baud_rate_of(speed)1163 baud_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 */
1181 void
set_up_tty(fd,local)1182 set_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 tios.c_cflag |= CS8 | CREAD | HUPCL;
1229 if (local || !modem)
1230 tios.c_cflag |= CLOCAL;
1231 tios.c_iflag = IGNBRK | IGNPAR;
1232 tios.c_oflag = 0;
1233 tios.c_lflag = 0;
1234 tios.c_cc[VMIN] = 1;
1235 tios.c_cc[VTIME] = 0;
1236
1237 if (crtscts == -2) {
1238 tios.c_iflag |= IXON | IXOFF;
1239 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1240 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1241 }
1242
1243 speed = translate_speed(inspeed);
1244 if (speed) {
1245 cfsetospeed(&tios, speed);
1246 cfsetispeed(&tios, speed);
1247 } else {
1248 speed = cfgetospeed(&tios);
1249 /*
1250 * We can't proceed if the serial port speed is 0,
1251 * since that implies that the serial port is disabled.
1252 */
1253 if ((speed == B0) && !sync_serial)
1254 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1255 }
1256
1257 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1258 fatal("tcsetattr: %m");
1259
1260 #ifndef CRTSCTS
1261 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1262 error("TCSETXF: %m");
1263 }
1264 #endif
1265
1266 baud_rate = inspeed = baud_rate_of(speed);
1267 if (!sync_serial)
1268 restore_term = 1;
1269 }
1270
1271 /*
1272 * restore_tty - restore the terminal to the saved settings.
1273 */
1274 void
restore_tty(fd)1275 restore_tty(fd)
1276 int fd;
1277 {
1278 if (restore_term) {
1279 if (!default_device) {
1280 /*
1281 * Turn off echoing, because otherwise we can get into
1282 * a loop with the tty and the modem echoing to each other.
1283 * We presume we are the sole user of this tty device, so
1284 * when we close it, it will revert to its defaults anyway.
1285 */
1286 inittermios.c_lflag &= ~(ECHO | ECHONL);
1287 }
1288 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1289 if (!hungup && errno != ENXIO)
1290 warn("tcsetattr: %m");
1291 #ifndef CRTSCTS
1292 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1293 if (!hungup && errno != ENXIO)
1294 error("TCSETXF: %m");
1295 }
1296 #endif
1297 if (!sync_serial)
1298 ioctl(fd, TIOCSWINSZ, &wsinfo);
1299 restore_term = 0;
1300 }
1301 }
1302
1303 /*
1304 * setdtr - control the DTR line on the serial port.
1305 * This is called from die(), so it shouldn't call die().
1306 */
1307 void
setdtr(fd,on)1308 setdtr(fd, on)
1309 int fd, on;
1310 {
1311 int modembits = TIOCM_DTR;
1312
1313 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1314 }
1315
1316 /*
1317 * open_loopback - open the device we use for getting packets
1318 * in demand mode. Under Solaris 2, we use our existing fd
1319 * to the ppp driver.
1320 */
1321 int
open_ppp_loopback()1322 open_ppp_loopback()
1323 {
1324 return pppfd;
1325 }
1326
1327 /*
1328 * output - Output PPP packet.
1329 */
1330 void
output(unit,p,len)1331 output(unit, p, len)
1332 int unit;
1333 u_char *p;
1334 int len;
1335 {
1336 struct strbuf data;
1337 int retries;
1338 struct pollfd pfd;
1339
1340 dump_packet("sent", p, len);
1341 if (snoop_send_hook) snoop_send_hook(p, len);
1342
1343 data.len = len;
1344 data.buf = (caddr_t) p;
1345 retries = 4;
1346 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1347 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1348 if (errno != ENXIO)
1349 error("Couldn't send packet: %m");
1350 break;
1351 }
1352 pfd.fd = pppfd;
1353 pfd.events = POLLOUT;
1354 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1355 }
1356 }
1357
1358
1359 /*
1360 * wait_input - wait until there is data available,
1361 * for the length of time specified by *timo (indefinite
1362 * if timo is NULL).
1363 */
1364 void
wait_input(timo)1365 wait_input(timo)
1366 struct timeval *timo;
1367 {
1368 int t;
1369
1370 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1371 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1372 fatal("poll: %m");
1373 }
1374
1375 /*
1376 * add_fd - add an fd to the set that wait_input waits for.
1377 */
add_fd(fd)1378 void add_fd(fd)
1379 int fd;
1380 {
1381 int n;
1382
1383 for (n = 0; n < n_pollfds; ++n)
1384 if (pollfds[n].fd == fd)
1385 return;
1386 if (n_pollfds < MAX_POLLFDS) {
1387 pollfds[n_pollfds].fd = fd;
1388 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1389 ++n_pollfds;
1390 } else
1391 error("Too many inputs!");
1392 }
1393
1394 /*
1395 * remove_fd - remove an fd from the set that wait_input waits for.
1396 */
remove_fd(fd)1397 void remove_fd(fd)
1398 int fd;
1399 {
1400 int n;
1401
1402 for (n = 0; n < n_pollfds; ++n) {
1403 if (pollfds[n].fd == fd) {
1404 while (++n < n_pollfds)
1405 pollfds[n-1] = pollfds[n];
1406 --n_pollfds;
1407 break;
1408 }
1409 }
1410 }
1411
1412 #if 0
1413 /*
1414 * wait_loop_output - wait until there is data available on the
1415 * loopback, for the length of time specified by *timo (indefinite
1416 * if timo is NULL).
1417 */
1418 void
1419 wait_loop_output(timo)
1420 struct timeval *timo;
1421 {
1422 wait_input(timo);
1423 }
1424
1425 /*
1426 * wait_time - wait for a given length of time or until a
1427 * signal is received.
1428 */
1429 void
1430 wait_time(timo)
1431 struct timeval *timo;
1432 {
1433 int n;
1434
1435 n = select(0, NULL, NULL, NULL, timo);
1436 if (n < 0 && errno != EINTR)
1437 fatal("select: %m");
1438 }
1439 #endif
1440
1441
1442 /*
1443 * read_packet - get a PPP packet from the serial device.
1444 */
1445 int
read_packet(buf)1446 read_packet(buf)
1447 u_char *buf;
1448 {
1449 struct strbuf ctrl, data;
1450 int flags, len;
1451 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1452
1453 for (;;) {
1454 data.maxlen = PPP_MRU + PPP_HDRLEN;
1455 data.buf = (caddr_t) buf;
1456 ctrl.maxlen = sizeof(ctrlbuf);
1457 ctrl.buf = (caddr_t) ctrlbuf;
1458 flags = 0;
1459 len = getmsg(pppfd, &ctrl, &data, &flags);
1460 if (len < 0) {
1461 if (errno == EAGAIN || errno == EINTR)
1462 return -1;
1463 fatal("Error reading packet: %m");
1464 }
1465
1466 if (ctrl.len <= 0)
1467 return data.len;
1468
1469 /*
1470 * Got a M_PROTO or M_PCPROTO message. Interpret it
1471 * as a DLPI primitive??
1472 */
1473 if (debug)
1474 dbglog("got dlpi prim 0x%x, len=%d",
1475 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1476
1477 }
1478 }
1479
1480 /*
1481 * get_loop_output - get outgoing packets from the ppp device,
1482 * and detect when we want to bring the real link up.
1483 * Return value is 1 if we need to bring up the link, 0 otherwise.
1484 */
1485 int
get_loop_output()1486 get_loop_output()
1487 {
1488 int len;
1489 int rv = 0;
1490
1491 while ((len = read_packet(inpacket_buf)) > 0) {
1492 if (loop_frame(inpacket_buf, len))
1493 rv = 1;
1494 }
1495 return rv;
1496 }
1497
1498 /*
1499 * netif_set_mtu - set the MTU on the PPP network interface.
1500 */
1501 void
netif_set_mtu(unit,mtu)1502 netif_set_mtu(unit, mtu)
1503 int unit, mtu;
1504 {
1505 struct ifreq ifr;
1506 #if defined(INET6) && defined(SOL2)
1507 struct lifreq lifr;
1508 int fd;
1509 #endif /* defined(INET6) && defined(SOL2) */
1510
1511 memset(&ifr, 0, sizeof(ifr));
1512 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1513 ifr.ifr_metric = link_mtu;
1514 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1515 error("Couldn't set IP MTU (%s): %m", ifr.ifr_name);
1516 }
1517
1518 #if defined(INET6) && defined(SOL2)
1519 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1520 if (fd < 0)
1521 error("Couldn't open IPv6 socket: %m");
1522
1523 memset(&lifr, 0, sizeof(lifr));
1524 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1525 lifr.lifr_mtu = link_mtu;
1526 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1527 close(fd);
1528 error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name);
1529 }
1530 close(fd);
1531 #endif /* defined(INET6) && defined(SOL2) */
1532 }
1533
1534 /*
1535 * tty_send_config - configure the transmit characteristics of
1536 * the ppp interface.
1537 */
1538 void
tty_send_config(mtu,asyncmap,pcomp,accomp)1539 tty_send_config(mtu, asyncmap, pcomp, accomp)
1540 int mtu;
1541 u_int32_t asyncmap;
1542 int pcomp, accomp;
1543 {
1544 int cf[2];
1545
1546 link_mtu = mtu;
1547 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1548 if (hungup && errno == ENXIO) {
1549 ++error_count;
1550 return;
1551 }
1552 error("Couldn't set MTU: %m");
1553 }
1554 if (fdmuxid >= 0) {
1555 if (!sync_serial) {
1556 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
1557 error("Couldn't set transmit ACCM: %m");
1558 }
1559 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1560 cf[1] = COMP_PROT | COMP_AC;
1561 if (any_compressions() &&
1562 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
1563 error("Couldn't set prot/AC compression: %m");
1564 }
1565 }
1566
1567 /*
1568 * tty_set_xaccm - set the extended transmit ACCM for the interface.
1569 */
1570 void
tty_set_xaccm(accm)1571 tty_set_xaccm(accm)
1572 ext_accm accm;
1573 {
1574 if (sync_serial)
1575 return;
1576
1577 if (fdmuxid >= 0
1578 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1579 if (!hungup || errno != ENXIO)
1580 warn("Couldn't set extended ACCM: %m");
1581 }
1582 }
1583
1584 /*
1585 * tty_recv_config - configure the receive-side characteristics of
1586 * the ppp interface.
1587 */
1588 void
tty_recv_config(mru,asyncmap,pcomp,accomp)1589 tty_recv_config(mru, asyncmap, pcomp, accomp)
1590 int mru;
1591 u_int32_t asyncmap;
1592 int pcomp, accomp;
1593 {
1594 int cf[2];
1595
1596 link_mru = mru;
1597 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1598 if (hungup && errno == ENXIO) {
1599 ++error_count;
1600 return;
1601 }
1602 error("Couldn't set MRU: %m");
1603 }
1604 if (fdmuxid >= 0) {
1605 if (!sync_serial) {
1606 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
1607 error("Couldn't set receive ACCM: %m");
1608 }
1609 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1610 cf[1] = DECOMP_PROT | DECOMP_AC;
1611 if (any_compressions() &&
1612 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
1613 error("Couldn't set prot/AC decompression: %m");
1614 }
1615 }
1616
1617 /*
1618 * ccp_test - ask kernel whether a given compression method
1619 * is acceptable for use.
1620 */
1621 int
ccp_test(unit,opt_ptr,opt_len,for_transmit)1622 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1623 int unit, opt_len, for_transmit;
1624 u_char *opt_ptr;
1625 {
1626 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1627 opt_ptr, opt_len, 0) >= 0)
1628 return 1;
1629 return (errno == ENOSR)? 0: -1;
1630 }
1631
1632 /*
1633 * ccp_flags_set - inform kernel about the current state of CCP.
1634 */
1635 void
ccp_flags_set(unit,isopen,isup)1636 ccp_flags_set(unit, isopen, isup)
1637 int unit, isopen, isup;
1638 {
1639 int cf[2];
1640
1641 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1642 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1643 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1644 if (!hungup || errno != ENXIO)
1645 error("Couldn't set kernel CCP state: %m");
1646 }
1647 }
1648
1649 /*
1650 * get_idle_time - return how long the link has been idle.
1651 */
1652 int
get_idle_time(u,ip)1653 get_idle_time(u, ip)
1654 int u;
1655 struct ppp_idle *ip;
1656 {
1657 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1658 }
1659
1660 /*
1661 * get_ppp_stats - return statistics for the link.
1662 */
1663 int
get_ppp_stats(u,stats)1664 get_ppp_stats(u, stats)
1665 int u;
1666 struct pppd_stats *stats;
1667 {
1668 struct ppp_stats s;
1669
1670 if (!sync_serial &&
1671 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1672 error("Couldn't get link statistics: %m");
1673 return 0;
1674 }
1675 stats->bytes_in = s.p.ppp_ibytes;
1676 stats->bytes_out = s.p.ppp_obytes;
1677 stats->pkts_in = s.p.ppp_ipackets;
1678 stats->pkts_out = s.p.ppp_opackets;
1679 return 1;
1680 }
1681
1682 #if 0
1683 /*
1684 * set_filters - transfer the pass and active filters to the kernel.
1685 */
1686 int
1687 set_filters(pass, active)
1688 struct bpf_program *pass, *active;
1689 {
1690 int ret = 1;
1691
1692 if (pass->bf_len > 0) {
1693 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1694 sizeof(struct bpf_program), 0) < 0) {
1695 error("Couldn't set pass-filter in kernel: %m");
1696 ret = 0;
1697 }
1698 }
1699 if (active->bf_len > 0) {
1700 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1701 sizeof(struct bpf_program), 0) < 0) {
1702 error("Couldn't set active-filter in kernel: %m");
1703 ret = 0;
1704 }
1705 }
1706 return ret;
1707 }
1708 #endif
1709
1710 /*
1711 * ccp_fatal_error - returns 1 if decompression was disabled as a
1712 * result of an error detected after decompression of a packet,
1713 * 0 otherwise. This is necessary because of patent nonsense.
1714 */
1715 int
ccp_fatal_error(unit)1716 ccp_fatal_error(unit)
1717 int unit;
1718 {
1719 int cf[2];
1720
1721 cf[0] = cf[1] = 0;
1722 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1723 if (errno != ENXIO && errno != EINVAL)
1724 error("Couldn't get compression flags: %m");
1725 return 0;
1726 }
1727 return cf[0] & CCP_FATALERROR;
1728 }
1729
1730 /*
1731 * sifvjcomp - config tcp header compression
1732 */
1733 int
sifvjcomp(u,vjcomp,xcidcomp,xmaxcid)1734 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1735 int u, vjcomp, xcidcomp, xmaxcid;
1736 {
1737 int cf[2];
1738 char maxcid[2];
1739
1740 if (vjcomp) {
1741 maxcid[0] = xcidcomp;
1742 maxcid[1] = 15; /* XXX should be rmaxcid */
1743 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1744 error("Couldn't initialize VJ compression: %m");
1745 }
1746 }
1747
1748 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1749 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1750 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1751 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1752 if (vjcomp)
1753 error("Couldn't enable VJ compression: %m");
1754 }
1755
1756 return 1;
1757 }
1758
1759 /*
1760 * sifup - Config the interface up and enable IP packets to pass.
1761 */
1762 int
sifup(u)1763 sifup(u)
1764 int u;
1765 {
1766 struct ifreq ifr;
1767
1768 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1769 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1770 error("Couldn't mark interface up (get): %m");
1771 return 0;
1772 }
1773 ifr.ifr_flags |= IFF_UP;
1774 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1775 error("Couldn't mark interface up (set): %m");
1776 return 0;
1777 }
1778 if_is_up = 1;
1779 return 1;
1780 }
1781
1782 /*
1783 * sifdown - Config the interface down and disable IP.
1784 */
1785 int
sifdown(u)1786 sifdown(u)
1787 int u;
1788 {
1789 struct ifreq ifr;
1790
1791 if (ipmuxid < 0)
1792 return 1;
1793 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1794 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1795 error("Couldn't mark interface down (get): %m");
1796 return 0;
1797 }
1798 ifr.ifr_flags &= ~IFF_UP;
1799 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1800 error("Couldn't mark interface down (set): %m");
1801 return 0;
1802 }
1803 if_is_up = 0;
1804 return 1;
1805 }
1806
1807 /*
1808 * sifnpmode - Set the mode for handling packets for a given NP.
1809 */
1810 int
sifnpmode(u,proto,mode)1811 sifnpmode(u, proto, mode)
1812 int u;
1813 int proto;
1814 enum NPmode mode;
1815 {
1816 int npi[2];
1817
1818 npi[0] = proto;
1819 npi[1] = (int) mode;
1820 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1821 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1822 return 0;
1823 }
1824 return 1;
1825 }
1826
1827 #if defined(SOL2) && defined(INET6)
1828 /*
1829 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1830 */
1831 int
sif6up(u)1832 sif6up(u)
1833 int u;
1834 {
1835 struct lifreq lifr;
1836 int fd;
1837
1838 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1839 if (fd < 0) {
1840 return 0;
1841 }
1842
1843 memset(&lifr, 0, sizeof(lifr));
1844 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1845 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1846 close(fd);
1847 return 0;
1848 }
1849
1850 lifr.lifr_flags |= IFF_UP;
1851 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1852 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1853 close(fd);
1854 return 0;
1855 }
1856
1857 if6_is_up = 1;
1858 close(fd);
1859 return 1;
1860 }
1861
1862 /*
1863 * sifdown - Config the IPv6 interface down and disable IPv6.
1864 */
1865 int
sif6down(u)1866 sif6down(u)
1867 int u;
1868 {
1869 struct lifreq lifr;
1870 int fd;
1871
1872 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1873 if (fd < 0)
1874 return 0;
1875
1876 memset(&lifr, 0, sizeof(lifr));
1877 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1878 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1879 close(fd);
1880 return 0;
1881 }
1882
1883 lifr.lifr_flags &= ~IFF_UP;
1884 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1885 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1886 close(fd);
1887 return 0;
1888 }
1889
1890 if6_is_up = 0;
1891 close(fd);
1892 return 1;
1893 }
1894
1895 /*
1896 * sif6addr - Config the interface with an IPv6 link-local address
1897 */
1898 int
sif6addr(u,o,h)1899 sif6addr(u, o, h)
1900 int u;
1901 eui64_t o, h;
1902 {
1903 struct lifreq lifr;
1904 struct sockaddr_storage laddr;
1905 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1906 int fd;
1907
1908 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1909 if (fd < 0)
1910 return 0;
1911
1912 memset(&lifr, 0, sizeof(lifr));
1913 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1914
1915 /*
1916 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1917 * zero values, hence the interface token came to be zero too,
1918 * and without this, in.ndpd will complain
1919 */
1920 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1921 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1922 close(fd);
1923 return 0;
1924 }
1925
1926 /*
1927 * Set the interface address and destination address
1928 */
1929 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1930 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1931 close(fd);
1932 return 0;
1933 }
1934
1935 memset(&lifr, 0, sizeof(lifr));
1936 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1937 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1938 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1939 close(fd);
1940 return 0;
1941 }
1942
1943 return 1;
1944 }
1945
1946 /*
1947 * cif6addr - Remove the IPv6 address from interface
1948 */
1949 int
cif6addr(u,o,h)1950 cif6addr(u, o, h)
1951 int u;
1952 eui64_t o, h;
1953 {
1954 return 1;
1955 }
1956
1957 #endif /* defined(SOL2) && defined(INET6) */
1958
1959
1960 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1961
1962 /*
1963 * sifaddr - Config the interface IP addresses and netmask.
1964 */
1965 int
sifaddr(u,o,h,m)1966 sifaddr(u, o, h, m)
1967 int u;
1968 u_int32_t o, h, m;
1969 {
1970 struct ifreq ifr;
1971 int ret = 1;
1972
1973 memset(&ifr, 0, sizeof(ifr));
1974 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1975 ifr.ifr_addr.sa_family = AF_INET;
1976 INET_ADDR(ifr.ifr_addr) = m;
1977 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1978 error("Couldn't set IP netmask: %m");
1979 ret = 0;
1980 }
1981 ifr.ifr_addr.sa_family = AF_INET;
1982 INET_ADDR(ifr.ifr_addr) = o;
1983 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1984 error("Couldn't set local IP address: %m");
1985 ret = 0;
1986 }
1987
1988 /*
1989 * On some systems, we have to explicitly set the point-to-point
1990 * flag bit before we can set a destination address.
1991 */
1992 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1993 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1994 ifr.ifr_flags |= IFF_POINTOPOINT;
1995 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1996 error("Couldn't mark interface pt-to-pt: %m");
1997 ret = 0;
1998 }
1999 }
2000 ifr.ifr_dstaddr.sa_family = AF_INET;
2001 INET_ADDR(ifr.ifr_dstaddr) = h;
2002 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
2003 error("Couldn't set remote IP address: %m");
2004 ret = 0;
2005 }
2006
2007 remote_addr = h;
2008 return ret;
2009 }
2010
2011 /*
2012 * cifaddr - Clear the interface IP addresses, and delete routes
2013 * through the interface if possible.
2014 */
2015 int
cifaddr(u,o,h)2016 cifaddr(u, o, h)
2017 int u;
2018 u_int32_t o, h;
2019 {
2020 #if defined(__USLC__) /* was: #if 0 */
2021 cifroute(unit, ouraddr, hisaddr);
2022 if (ipmuxid >= 0) {
2023 notice("Removing ppp interface unit");
2024 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
2025 error("Can't remove ppp interface unit: %m");
2026 return 0;
2027 }
2028 ipmuxid = -1;
2029 }
2030 #endif
2031 remote_addr = 0;
2032 return 1;
2033 }
2034
2035 /*
2036 * sifdefaultroute - assign a default route through the address given.
2037 */
2038 int
sifdefaultroute(u,l,g)2039 sifdefaultroute(u, l, g)
2040 int u;
2041 u_int32_t l, g;
2042 {
2043 struct rtentry rt;
2044
2045 #if defined(__USLC__)
2046 g = l; /* use the local address as gateway */
2047 #endif
2048 memset(&rt, 0, sizeof(rt));
2049 rt.rt_dst.sa_family = AF_INET;
2050 INET_ADDR(rt.rt_dst) = 0;
2051 rt.rt_gateway.sa_family = AF_INET;
2052 INET_ADDR(rt.rt_gateway) = g;
2053 rt.rt_flags = RTF_GATEWAY;
2054
2055 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2056 error("Can't add default route: %m");
2057 return 0;
2058 }
2059
2060 default_route_gateway = g;
2061 return 1;
2062 }
2063
2064 /*
2065 * cifdefaultroute - delete a default route through the address given.
2066 */
2067 int
cifdefaultroute(u,l,g)2068 cifdefaultroute(u, l, g)
2069 int u;
2070 u_int32_t l, g;
2071 {
2072 struct rtentry rt;
2073
2074 #if defined(__USLC__)
2075 g = l; /* use the local address as gateway */
2076 #endif
2077 memset(&rt, 0, sizeof(rt));
2078 rt.rt_dst.sa_family = AF_INET;
2079 INET_ADDR(rt.rt_dst) = 0;
2080 rt.rt_gateway.sa_family = AF_INET;
2081 INET_ADDR(rt.rt_gateway) = g;
2082 rt.rt_flags = RTF_GATEWAY;
2083
2084 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2085 error("Can't delete default route: %m");
2086 return 0;
2087 }
2088
2089 default_route_gateway = 0;
2090 return 1;
2091 }
2092
2093 /*
2094 * sifproxyarp - Make a proxy ARP entry for the peer.
2095 */
2096 int
sifproxyarp(unit,hisaddr)2097 sifproxyarp(unit, hisaddr)
2098 int unit;
2099 u_int32_t hisaddr;
2100 {
2101 struct arpreq arpreq;
2102
2103 memset(&arpreq, 0, sizeof(arpreq));
2104 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2105 return 0;
2106
2107 arpreq.arp_pa.sa_family = AF_INET;
2108 INET_ADDR(arpreq.arp_pa) = hisaddr;
2109 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2110 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2111 error("Couldn't set proxy ARP entry: %m");
2112 return 0;
2113 }
2114
2115 proxy_arp_addr = hisaddr;
2116 return 1;
2117 }
2118
2119 /*
2120 * cifproxyarp - Delete the proxy ARP entry for the peer.
2121 */
2122 int
cifproxyarp(unit,hisaddr)2123 cifproxyarp(unit, hisaddr)
2124 int unit;
2125 u_int32_t hisaddr;
2126 {
2127 struct arpreq arpreq;
2128
2129 memset(&arpreq, 0, sizeof(arpreq));
2130 arpreq.arp_pa.sa_family = AF_INET;
2131 INET_ADDR(arpreq.arp_pa) = hisaddr;
2132 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2133 error("Couldn't delete proxy ARP entry: %m");
2134 return 0;
2135 }
2136
2137 proxy_arp_addr = 0;
2138 return 1;
2139 }
2140
2141 /*
2142 * get_ether_addr - get the hardware address of an interface on the
2143 * the same subnet as ipaddr.
2144 */
2145 #define MAX_IFS 32
2146
2147 static int
get_ether_addr(ipaddr,hwaddr)2148 get_ether_addr(ipaddr, hwaddr)
2149 u_int32_t ipaddr;
2150 struct sockaddr *hwaddr;
2151 {
2152 struct ifreq *ifr, *ifend, ifreq;
2153 int nif;
2154 struct ifconf ifc;
2155 u_int32_t ina, mask;
2156
2157 /*
2158 * Scan through the system's network interfaces.
2159 */
2160 #ifdef SIOCGIFNUM
2161 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2162 #endif
2163 nif = MAX_IFS;
2164 ifc.ifc_len = nif * sizeof(struct ifreq);
2165 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2166 if (ifc.ifc_buf == 0)
2167 return 0;
2168 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2169 warn("Couldn't get system interface list: %m");
2170 free(ifc.ifc_buf);
2171 return 0;
2172 }
2173 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2174 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2175 if (ifr->ifr_addr.sa_family != AF_INET)
2176 continue;
2177 /*
2178 * Check that the interface is up, and not point-to-point or loopback.
2179 */
2180 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2181 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2182 continue;
2183 if ((ifreq.ifr_flags &
2184 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2185 != (IFF_UP|IFF_BROADCAST))
2186 continue;
2187 /*
2188 * Get its netmask and check that it's on the right subnet.
2189 */
2190 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2191 continue;
2192 ina = INET_ADDR(ifr->ifr_addr);
2193 mask = INET_ADDR(ifreq.ifr_addr);
2194 if ((ipaddr & mask) == (ina & mask))
2195 break;
2196 }
2197
2198 if (ifr >= ifend) {
2199 warn("No suitable interface found for proxy ARP");
2200 free(ifc.ifc_buf);
2201 return 0;
2202 }
2203
2204 info("found interface %s for proxy ARP", ifr->ifr_name);
2205 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2206 error("Couldn't get hardware address for %s", ifr->ifr_name);
2207 free(ifc.ifc_buf);
2208 return 0;
2209 }
2210
2211 free(ifc.ifc_buf);
2212 return 1;
2213 }
2214
2215 /*
2216 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2217 */
2218 static int
get_hw_addr_dlpi(name,hwaddr)2219 get_hw_addr_dlpi(name, hwaddr)
2220 char *name;
2221 struct sockaddr *hwaddr;
2222 {
2223 char *p, *q;
2224 int unit, iffd, adrlen;
2225 unsigned char *adrp;
2226 char ifdev[24];
2227 struct {
2228 union DL_primitives prim;
2229 char space[64];
2230 } reply;
2231
2232 /*
2233 * We have to open the device and ask it for its hardware address.
2234 * First split apart the device name and unit.
2235 */
2236 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2237 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2238 if (!isdigit(*q))
2239 break;
2240 unit = atoi(q+1);
2241 q[1] = 0;
2242
2243 /*
2244 * Open the device and do a DLPI attach and phys_addr_req.
2245 */
2246 iffd = open(ifdev, O_RDWR);
2247 if (iffd < 0) {
2248 error("Can't open %s: %m", ifdev);
2249 return 0;
2250 }
2251 if (dlpi_attach(iffd, unit) < 0
2252 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2253 || dlpi_info_req(iffd) < 0
2254 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2255 close(iffd);
2256 return 0;
2257 }
2258
2259 adrlen = reply.prim.info_ack.dl_addr_length;
2260 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2261
2262 #if DL_CURRENT_VERSION >= 2
2263 if (reply.prim.info_ack.dl_sap_length < 0)
2264 adrlen += reply.prim.info_ack.dl_sap_length;
2265 else
2266 adrp += reply.prim.info_ack.dl_sap_length;
2267 #endif
2268
2269 hwaddr->sa_family = AF_UNSPEC;
2270 memcpy(hwaddr->sa_data, adrp, adrlen);
2271
2272 return 1;
2273 }
2274 /*
2275 * get_hw_addr - obtain the hardware address for a named interface.
2276 */
2277 static int
get_hw_addr(name,ina,hwaddr)2278 get_hw_addr(name, ina, hwaddr)
2279 char *name;
2280 u_int32_t ina;
2281 struct sockaddr *hwaddr;
2282 {
2283 /* New way - get the address by doing an arp request. */
2284 int s;
2285 struct arpreq req;
2286
2287 s = socket(AF_INET, SOCK_DGRAM, 0);
2288 if (s < 0)
2289 return 0;
2290 memset(&req, 0, sizeof(req));
2291 req.arp_pa.sa_family = AF_INET;
2292 INET_ADDR(req.arp_pa) = ina;
2293 if (ioctl(s, SIOCGARP, &req) < 0) {
2294 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2295 return 0;
2296 }
2297 *hwaddr = req.arp_ha;
2298 hwaddr->sa_family = AF_UNSPEC;
2299
2300 return 1;
2301 }
2302
2303 static int
dlpi_attach(fd,ppa)2304 dlpi_attach(fd, ppa)
2305 int fd, ppa;
2306 {
2307 dl_attach_req_t req;
2308 struct strbuf buf;
2309
2310 req.dl_primitive = DL_ATTACH_REQ;
2311 req.dl_ppa = ppa;
2312 buf.len = sizeof(req);
2313 buf.buf = (void *) &req;
2314 return putmsg(fd, &buf, NULL, RS_HIPRI);
2315 }
2316
2317 static int
dlpi_info_req(fd)2318 dlpi_info_req(fd)
2319 int fd;
2320 {
2321 dl_info_req_t req;
2322 struct strbuf buf;
2323
2324 req.dl_primitive = DL_INFO_REQ;
2325 buf.len = sizeof(req);
2326 buf.buf = (void *) &req;
2327 return putmsg(fd, &buf, NULL, RS_HIPRI);
2328 }
2329
2330 static int
dlpi_get_reply(fd,reply,expected_prim,maxlen)2331 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2332 union DL_primitives *reply;
2333 int fd, expected_prim, maxlen;
2334 {
2335 struct strbuf buf;
2336 int flags, n;
2337 struct pollfd pfd;
2338
2339 /*
2340 * Use poll to wait for a message with a timeout.
2341 */
2342 pfd.fd = fd;
2343 pfd.events = POLLIN | POLLPRI;
2344 do {
2345 n = poll(&pfd, 1, 1000);
2346 } while (n == -1 && errno == EINTR);
2347 if (n <= 0)
2348 return -1;
2349
2350 /*
2351 * Get the reply.
2352 */
2353 buf.maxlen = maxlen;
2354 buf.buf = (void *) reply;
2355 flags = 0;
2356 if (getmsg(fd, &buf, NULL, &flags) < 0)
2357 return -1;
2358
2359 if (buf.len < sizeof(ulong)) {
2360 if (debug)
2361 dbglog("dlpi response short (len=%d)\n", buf.len);
2362 return -1;
2363 }
2364
2365 if (reply->dl_primitive == expected_prim)
2366 return 0;
2367
2368 if (debug) {
2369 if (reply->dl_primitive == DL_ERROR_ACK) {
2370 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2371 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2372 reply->error_ack.dl_error_primitive);
2373 } else {
2374 dbglog("dlpi unexpected response prim %x\n",
2375 reply->dl_primitive);
2376 }
2377 }
2378
2379 return -1;
2380 }
2381
2382 /*
2383 * Return user specified netmask, modified by any mask we might determine
2384 * for address `addr' (in network byte order).
2385 * Here we scan through the system's list of interfaces, looking for
2386 * any non-point-to-point interfaces which might appear to be on the same
2387 * network as `addr'. If we find any, we OR in their netmask to the
2388 * user-specified netmask.
2389 */
2390 u_int32_t
GetMask(addr)2391 GetMask(addr)
2392 u_int32_t addr;
2393 {
2394 u_int32_t mask, nmask, ina;
2395 struct ifreq *ifr, *ifend, ifreq;
2396 int nif;
2397 struct ifconf ifc;
2398
2399 addr = ntohl(addr);
2400 if (IN_CLASSA(addr)) /* determine network mask for address class */
2401 nmask = IN_CLASSA_NET;
2402 else if (IN_CLASSB(addr))
2403 nmask = IN_CLASSB_NET;
2404 else
2405 nmask = IN_CLASSC_NET;
2406 /* class D nets are disallowed by bad_ip_adrs */
2407 mask = netmask | htonl(nmask);
2408
2409 /*
2410 * Scan through the system's network interfaces.
2411 */
2412 #ifdef SIOCGIFNUM
2413 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2414 #endif
2415 nif = MAX_IFS;
2416 ifc.ifc_len = nif * sizeof(struct ifreq);
2417 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2418 if (ifc.ifc_buf == 0)
2419 return mask;
2420 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2421 warn("Couldn't get system interface list: %m");
2422 free(ifc.ifc_buf);
2423 return mask;
2424 }
2425 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2426 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2427 /*
2428 * Check the interface's internet address.
2429 */
2430 if (ifr->ifr_addr.sa_family != AF_INET)
2431 continue;
2432 ina = INET_ADDR(ifr->ifr_addr);
2433 if ((ntohl(ina) & nmask) != (addr & nmask))
2434 continue;
2435 /*
2436 * Check that the interface is up, and not point-to-point or loopback.
2437 */
2438 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2439 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2440 continue;
2441 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2442 != IFF_UP)
2443 continue;
2444 /*
2445 * Get its netmask and OR it into our mask.
2446 */
2447 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2448 continue;
2449 mask |= INET_ADDR(ifreq.ifr_addr);
2450 }
2451
2452 free(ifc.ifc_buf);
2453 return mask;
2454 }
2455
2456 /*
2457 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2458 */
2459 void
logwtmp(line,name,host)2460 logwtmp(line, name, host)
2461 const char *line, *name, *host;
2462 {
2463 static struct utmpx utmpx;
2464
2465 if (name[0] != 0) {
2466 /* logging in */
2467 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2468 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2469 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2470 utmpx.ut_pid = getpid();
2471 utmpx.ut_type = USER_PROCESS;
2472 } else {
2473 utmpx.ut_type = DEAD_PROCESS;
2474 }
2475 gettimeofday(&utmpx.ut_tv, NULL);
2476 updwtmpx("/var/adm/wtmpx", &utmpx);
2477 }
2478
2479 /*
2480 * get_host_seed - return the serial number of this machine.
2481 */
2482 int
get_host_seed()2483 get_host_seed()
2484 {
2485 char buf[32];
2486
2487 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2488 error("sysinfo: %m");
2489 return 0;
2490 }
2491 return (int) strtoul(buf, NULL, 16);
2492 }
2493
2494 static int
strioctl(fd,cmd,ptr,ilen,olen)2495 strioctl(fd, cmd, ptr, ilen, olen)
2496 int fd, cmd, ilen, olen;
2497 void *ptr;
2498 {
2499 struct strioctl str;
2500
2501 str.ic_cmd = cmd;
2502 str.ic_timout = 0;
2503 str.ic_len = ilen;
2504 str.ic_dp = ptr;
2505 if (ioctl(fd, I_STR, &str) == -1)
2506 return -1;
2507 if (str.ic_len != olen)
2508 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2509 olen, str.ic_len, cmd);
2510 return 0;
2511 }
2512
2513 #if 0
2514 /*
2515 * lock - create a lock file for the named lock device
2516 */
2517
2518 #define LOCK_PREFIX "/var/spool/locks/LK."
2519 static char lock_file[40]; /* name of lock file created */
2520
2521 int
2522 lock(dev)
2523 char *dev;
2524 {
2525 int n, fd, pid;
2526 struct stat sbuf;
2527 char ascii_pid[12];
2528
2529 if (stat(dev, &sbuf) < 0) {
2530 error("Can't get device number for %s: %m", dev);
2531 return -1;
2532 }
2533 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2534 error("Can't lock %s: not a character device", dev);
2535 return -1;
2536 }
2537 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2538 LOCK_PREFIX, major(sbuf.st_dev),
2539 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2540
2541 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2542 if (errno == EEXIST
2543 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2544 /* Read the lock file to find out who has the device locked */
2545 n = read(fd, ascii_pid, 11);
2546 if (n <= 0) {
2547 error("Can't read pid from lock file %s", lock_file);
2548 close(fd);
2549 } else {
2550 ascii_pid[n] = 0;
2551 pid = atoi(ascii_pid);
2552 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2553 /* pid no longer exists - remove the lock file */
2554 if (unlink(lock_file) == 0) {
2555 close(fd);
2556 notice("Removed stale lock on %s (pid %d)",
2557 dev, pid);
2558 continue;
2559 } else
2560 warn("Couldn't remove stale lock on %s",
2561 dev);
2562 } else
2563 notice("Device %s is locked by pid %d",
2564 dev, pid);
2565 }
2566 close(fd);
2567 } else
2568 error("Can't create lock file %s: %m", lock_file);
2569 lock_file[0] = 0;
2570 return -1;
2571 }
2572
2573 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2574 write(fd, ascii_pid, 11);
2575
2576 close(fd);
2577 return 1;
2578 }
2579
2580 /*
2581 * unlock - remove our lockfile
2582 */
2583 void
2584 unlock()
2585 {
2586 if (lock_file[0]) {
2587 unlink(lock_file);
2588 lock_file[0] = 0;
2589 }
2590 }
2591 #endif
2592
2593 /*
2594 * cifroute - delete a route through the addresses given.
2595 */
2596 int
cifroute(u,our,his)2597 cifroute(u, our, his)
2598 int u;
2599 u_int32_t our, his;
2600 {
2601 struct rtentry rt;
2602
2603 memset(&rt, 0, sizeof(rt));
2604 rt.rt_dst.sa_family = AF_INET;
2605 INET_ADDR(rt.rt_dst) = his;
2606 rt.rt_gateway.sa_family = AF_INET;
2607 INET_ADDR(rt.rt_gateway) = our;
2608 rt.rt_flags = RTF_HOST;
2609
2610 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2611 error("Can't delete route: %m");
2612 return 0;
2613 }
2614
2615 return 1;
2616 }
2617
2618 /*
2619 * have_route_to - determine if the system has a route to the specified
2620 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2621 * `addr' is in network byte order.
2622 * For demand mode to work properly, we have to ignore routes
2623 * through our own interface.
2624 */
2625 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2626 #define T_CURRENT MI_T_CURRENT
2627 #endif
2628
2629 int
have_route_to(addr)2630 have_route_to(addr)
2631 u_int32_t addr;
2632 {
2633 #ifdef SOL2
2634 int fd, r, flags, i;
2635 struct {
2636 struct T_optmgmt_req req;
2637 struct opthdr hdr;
2638 } req;
2639 union {
2640 struct T_optmgmt_ack ack;
2641 unsigned char space[64];
2642 } ack;
2643 struct opthdr *rh;
2644 struct strbuf cbuf, dbuf;
2645 int nroutes;
2646 mib2_ipRouteEntry_t routes[8];
2647 mib2_ipRouteEntry_t *rp;
2648
2649 fd = open(mux_dev_name, O_RDWR);
2650 if (fd < 0) {
2651 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2652 return -1;
2653 }
2654
2655 req.req.PRIM_type = T_OPTMGMT_REQ;
2656 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2657 req.req.OPT_length = sizeof(req.hdr);
2658 req.req.MGMT_flags = T_CURRENT;
2659
2660 req.hdr.level = MIB2_IP;
2661 req.hdr.name = 0;
2662 req.hdr.len = 0;
2663
2664 cbuf.buf = (char *) &req;
2665 cbuf.len = sizeof(req);
2666
2667 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2668 warn("have_route_to: putmsg: %m");
2669 close(fd);
2670 return -1;
2671 }
2672
2673 for (;;) {
2674 cbuf.buf = (char *) &ack;
2675 cbuf.maxlen = sizeof(ack);
2676 dbuf.buf = (char *) routes;
2677 dbuf.maxlen = sizeof(routes);
2678 flags = 0;
2679 r = getmsg(fd, &cbuf, &dbuf, &flags);
2680 if (r == -1) {
2681 warn("have_route_to: getmsg: %m");
2682 close(fd);
2683 return -1;
2684 }
2685
2686 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2687 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2688 || ack.ack.MGMT_flags != T_SUCCESS
2689 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2690 dbglog("have_route_to: bad message len=%d prim=%d",
2691 cbuf.len, ack.ack.PRIM_type);
2692 close(fd);
2693 return -1;
2694 }
2695
2696 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2697 if (rh->level == 0 && rh->name == 0)
2698 break;
2699 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2700 while (r == MOREDATA)
2701 r = getmsg(fd, NULL, &dbuf, &flags);
2702 continue;
2703 }
2704
2705 for (;;) {
2706 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2707 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2708 if (rp->ipRouteMask != ~0) {
2709 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2710 rp->ipRouteDest, rp->ipRouteNextHop,
2711 rp->ipRouteMask);
2712 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2713 && rp->ipRouteNextHop != remote_addr)
2714 return 1;
2715 }
2716 }
2717 if (r == 0)
2718 break;
2719 r = getmsg(fd, NULL, &dbuf, &flags);
2720 }
2721 }
2722 close(fd);
2723 return 0;
2724 #else
2725 return -1;
2726 #endif /* SOL2 */
2727 }
2728
2729 /*
2730 * get_pty - get a pty master/slave pair and chown the slave side to
2731 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2732 */
2733 int
get_pty(master_fdp,slave_fdp,slave_name,uid)2734 get_pty(master_fdp, slave_fdp, slave_name, uid)
2735 int *master_fdp;
2736 int *slave_fdp;
2737 char *slave_name;
2738 int uid;
2739 {
2740 int mfd, sfd;
2741 char *pty_name;
2742 struct termios tios;
2743
2744 mfd = open("/dev/ptmx", O_RDWR);
2745 if (mfd < 0) {
2746 error("Couldn't open pty master: %m");
2747 return 0;
2748 }
2749
2750 pty_name = ptsname(mfd);
2751 if (pty_name == NULL) {
2752 error("Couldn't get name of pty slave");
2753 close(mfd);
2754 return 0;
2755 }
2756 if (chown(pty_name, uid, -1) < 0)
2757 warn("Couldn't change owner of pty slave: %m");
2758 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2759 warn("Couldn't change permissions on pty slave: %m");
2760 if (unlockpt(mfd) < 0)
2761 warn("Couldn't unlock pty slave: %m");
2762
2763 sfd = open(pty_name, O_RDWR);
2764 if (sfd < 0) {
2765 error("Couldn't open pty slave %s: %m", pty_name);
2766 close(mfd);
2767 return 0;
2768 }
2769 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2770 warn("Couldn't push ptem module on pty slave: %m");
2771
2772 dbglog("Using %s", pty_name);
2773 strlcpy(slave_name, pty_name, MAXPATHLEN);
2774 *master_fdp = mfd;
2775 *slave_fdp = sfd;
2776
2777 return 1;
2778 }
2779