1/*-
2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/ppp/datalink.c 91623 2002-03-04 10:08:57Z brian $
27 */
28
29#include <sys/param.h>
30#include <netinet/in.h>
31#include <netinet/in_systm.h>
32#include <netinet/ip.h>
33#include <sys/socket.h>
34#include <sys/un.h>
35
36#include <ctype.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <sys/uio.h>
41#include <termios.h>
42
43#include "layer.h"
44#include "mbuf.h"
45#include "log.h"
46#include "defs.h"
47#include "timer.h"
48#include "fsm.h"
49#include "descriptor.h"
50#include "lqr.h"
51#include "hdlc.h"
52#include "lcp.h"
53#include "async.h"
54#include "throughput.h"
55#include "ccp.h"
56#include "link.h"
57#include "physical.h"
58#include "iplist.h"
59#include "slcompress.h"
60#include "ncpaddr.h"
61#include "ip.h"
62#include "ipcp.h"
63#include "filter.h"
64#include "mp.h"
65#ifndef NORADIUS
66#include "radius.h"
67#endif
68#include "ipv6cp.h"
69#include "ncp.h"
70#include "bundle.h"
71#include "chat.h"
72#include "auth.h"
73#include "prompt.h"
74#include "proto.h"
75#include "pap.h"
76#include "chap.h"
77#include "command.h"
78#include "cbcp.h"
79#include "datalink.h"
80
81static void datalink_LoginDone(struct datalink *);
82static void datalink_NewState(struct datalink *, int);
83
84static void
85datalink_OpenTimeout(void *v)
86{
87 struct datalink *dl = (struct datalink *)v;
88
89 timer_Stop(&dl->dial.timer);
90 if (dl->state == DATALINK_OPENING)
91 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
92}
93
94static int
95datalink_StartDialTimer(struct datalink *dl, int Timeout)
96{
97 int result = Timeout;
98
99 timer_Stop(&dl->dial.timer);
100 if (Timeout < 0)
101 result = (random() % DIAL_TIMEOUT) + 1;
102 dl->dial.timer.load = result ? result * SECTICKS : 1;
103 dl->dial.timer.func = datalink_OpenTimeout;
104 dl->dial.timer.name = "dial";
105 dl->dial.timer.arg = dl;
106 timer_Start(&dl->dial.timer);
107 if (dl->state == DATALINK_OPENING)
108 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
109 dl->name, result);
110 return result;
111}
112
113static void
114datalink_HangupDone(struct datalink *dl)
115{
116 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
117 dl->physical->fd != -1) {
118 /* Don't close our device if the link is dedicated */
119 datalink_LoginDone(dl);
120 return;
121 }
122
123 chat_Finish(&dl->chat);
124 physical_Close(dl->physical);
125 dl->phone.chosen = "N/A";
126
127 if (dl->cbcp.required) {
128 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
129 dl->cfg.callback.opmask = 0;
130 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
131 sizeof dl->cfg.phone.list - 1);
132 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
133 dl->phone.alt = dl->phone.next = NULL;
134 dl->reconnect_tries = dl->cfg.reconnect.max;
135 dl->dial.tries = dl->cfg.dial.max;
136 dl->dial.incs = 0;
137 dl->script.run = 1;
138 dl->script.packetmode = 1;
139 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
140 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
141 bundle_LinksRemoved(dl->bundle);
142 /* if dial.timeout is < 0 (random), we don't override fsm.delay */
143 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
144 dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
145 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
146 cbcp_Down(&dl->cbcp);
147 datalink_NewState(dl, DATALINK_OPENING);
148 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
149 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
150 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
151 } else if (dl->bundle->CleaningUp ||
152 (dl->physical->type == PHYS_DIRECT) ||
153 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
154 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
155 datalink_NewState(dl, DATALINK_CLOSED);
156 dl->dial.tries = -1;
157 dl->dial.incs = 0;
158 dl->reconnect_tries = 0;
159 bundle_LinkClosed(dl->bundle, dl);
160 if (!dl->bundle->CleaningUp &&
161 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
162 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
163 } else {
164 datalink_NewState(dl, DATALINK_OPENING);
165 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
166 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
167 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
168 if (dl->dial.tries < 0) {
169 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
170 dl->dial.tries = dl->cfg.dial.max;
171 dl->dial.incs = 0;
172 dl->reconnect_tries--;
173 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
174 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
175 dl->cfg.reconnect.max);
176 bundle_Notify(dl->bundle, EX_RECONNECT);
177 } else {
178 if (dl->phone.next == NULL)
179 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
180 else
181 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
182 bundle_Notify(dl->bundle, EX_REDIAL);
183 }
184 }
185}
186
187const char *
188datalink_ChoosePhoneNumber(struct datalink *dl)
189{
190 char *phone;
191
192 if (dl->phone.alt == NULL) {
193 if (dl->phone.next == NULL) {
194 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
195 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
196 if (*dl->phone.list == '\0')
197 return "";
198 dl->phone.next = dl->phone.list;
199 }
200 dl->phone.alt = strsep(&dl->phone.next, ":");
201 }
202 phone = strsep(&dl->phone.alt, "|");
203 dl->phone.chosen = *phone ? phone : "[NONE]";
204 if (*phone)
205 log_Printf(LogCHAT, "Phone: %s\n", phone);
206 return phone;
207}
208
209static void
210datalink_LoginDone(struct datalink *dl)
211{
212 chat_Finish(&dl->chat);
213
214 if (!dl->script.packetmode) {
215 dl->dial.tries = -1;
216 dl->dial.incs = 0;
217 datalink_NewState(dl, DATALINK_READY);
218 } else if (!physical_Raw(dl->physical)) {
219 dl->dial.tries = 0;
220 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
221 if (dl->script.run) {
222 datalink_NewState(dl, DATALINK_LOGOUT);
223 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
224 log_Printf(LogWARN, "Invalid logout script\n");
225 } else {
226 physical_StopDeviceTimer(dl->physical);
227 if (dl->physical->type == PHYS_DEDICATED)
228 /* force a redial timeout */
229 physical_Close(dl->physical);
230 datalink_HangupDone(dl);
231 }
232 } else {
233 dl->dial.tries = -1;
234 dl->dial.incs = 0;
235
236 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
237 async_Setup(&dl->physical->async);
238
239 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
240 0 : dl->physical->link.lcp.cfg.openmode);
241 ccp_Setup(&dl->physical->link.ccp);
242
243 datalink_NewState(dl, DATALINK_LCP);
244 fsm_Up(&dl->physical->link.lcp.fsm);
245 fsm_Open(&dl->physical->link.lcp.fsm);
246 }
247}
248
249static int
250datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
251 int *n)
252{
253 struct datalink *dl = descriptor2datalink(d);
254 int result;
255
256 result = 0;
257 switch (dl->state) {
258 case DATALINK_CLOSED:
259 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
260 PHYS_FOREGROUND|PHYS_DDIAL)) &&
261 !dl->bundle->CleaningUp)
262 /*
263 * Our first time in - DEDICATED & DDIAL never come down, and
264 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
265 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
266 * and fall through.
267 */
268 datalink_Up(dl, 1, 1);
269 else
270 break;
271 /* fall through */
272
273 case DATALINK_OPENING:
274 if (dl->dial.timer.state != TIMER_RUNNING) {
275 if (--dl->dial.tries < 0)
276 dl->dial.tries = 0;
277 if (physical_Open(dl->physical, dl->bundle) >= 0) {
278 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
279 "Type `~?' for help\r\n", dl->name,
280 dl->physical->name.full);
281 if (dl->script.run) {
282 datalink_NewState(dl, DATALINK_DIAL);
283 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
284 *dl->cfg.script.dial ?
285 datalink_ChoosePhoneNumber(dl) : ""))
286 log_Printf(LogWARN, "Invalid dial script\n");
287 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
288 dl->cfg.dial.max)
289 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
290 dl->name, dl->cfg.dial.max - dl->dial.tries,
291 dl->cfg.dial.max);
292 } else
293 datalink_NewState(dl, DATALINK_CARRIER);
294 return datalink_UpdateSet(d, r, w, e, n);
295 } else {
296 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
297 dl->cfg.dial.max)
298 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
299 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
300 else
301 log_Printf(LogCHAT, "Failed to open device\n");
302
303 if (dl->bundle->CleaningUp ||
304 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
305 dl->cfg.dial.max && dl->dial.tries == 0)) {
306 datalink_NewState(dl, DATALINK_CLOSED);
307 dl->reconnect_tries = 0;
308 dl->dial.tries = -1;
309 log_WritePrompts(dl, "Failed to open %s\n",
310 dl->physical->name.full);
311 bundle_LinkClosed(dl->bundle, dl);
312 }
313 if (!dl->bundle->CleaningUp) {
314 int timeout;
315
316 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
317 bundle_Notify(dl->bundle, EX_REDIAL);
318 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
319 dl->physical->name.full, timeout);
320 }
321 }
322 }
323 break;
324
325 case DATALINK_CARRIER:
326 /* Wait for carrier on the device */
327 switch (physical_AwaitCarrier(dl->physical)) {
328 case CARRIER_PENDING:
329 log_Printf(LogDEBUG, "Waiting for carrier\n");
330 return 0; /* A device timer is running to wake us up again */
331
332 case CARRIER_OK:
333 if (dl->script.run) {
334 datalink_NewState(dl, DATALINK_LOGIN);
335 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
336 log_Printf(LogWARN, "Invalid login script\n");
337 } else
338 datalink_LoginDone(dl);
339 return datalink_UpdateSet(d, r, w, e, n);
340
341 case CARRIER_LOST:
342 physical_Offline(dl->physical); /* Is this required ? */
343 if (dl->script.run) {
344 datalink_NewState(dl, DATALINK_HANGUP);
345 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
346 log_Printf(LogWARN, "Invalid hangup script\n");
347 return datalink_UpdateSet(d, r, w, e, n);
348 } else {
349 datalink_HangupDone(dl);
350 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
351 }
352 }
353
354 case DATALINK_HANGUP:
355 case DATALINK_DIAL:
356 case DATALINK_LOGOUT:
357 case DATALINK_LOGIN:
358 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
359 switch (dl->chat.state) {
360 case CHAT_DONE:
361 /* script succeeded */
362 switch(dl->state) {
363 case DATALINK_HANGUP:
364 datalink_HangupDone(dl);
365 break;
366 case DATALINK_DIAL:
367 datalink_NewState(dl, DATALINK_CARRIER);
368 return datalink_UpdateSet(d, r, w, e, n);
369 case DATALINK_LOGOUT:
370 datalink_NewState(dl, DATALINK_HANGUP);
371 physical_Offline(dl->physical);
372 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
373 log_Printf(LogWARN, "Invalid hangup script\n");
374 return datalink_UpdateSet(d, r, w, e, n);
375 case DATALINK_LOGIN:
376 dl->phone.alt = NULL;
377 datalink_LoginDone(dl);
378 return datalink_UpdateSet(d, r, w, e, n);
379 }
380 break;
381 case CHAT_FAILED:
382 /* Going down - script failed */
383 log_Printf(LogWARN, "Chat script failed\n");
384 switch(dl->state) {
385 case DATALINK_HANGUP:
386 datalink_HangupDone(dl);
387 break;
388 case DATALINK_DIAL:
389 case DATALINK_LOGOUT:
390 case DATALINK_LOGIN:
391 datalink_NewState(dl, DATALINK_HANGUP);
392 physical_Offline(dl->physical);
393 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
394 log_Printf(LogWARN, "Invalid hangup script\n");
395 return datalink_UpdateSet(d, r, w, e, n);
396 }
397 break;
398 }
399 break;
400
401 case DATALINK_READY:
402 case DATALINK_LCP:
403 case DATALINK_AUTH:
404 case DATALINK_CBCP:
405 case DATALINK_OPEN:
406 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
407 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
408 break;
409 }
410 return result;
411}
412
413int
414datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
415{
416 return physical_RemoveFromSet(dl->physical, r, w, e);
417}
418
419static int
420datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
421{
422 struct datalink *dl = descriptor2datalink(d);
423
424 switch (dl->state) {
425 case DATALINK_CLOSED:
426 case DATALINK_OPENING:
427 break;
428
429 case DATALINK_HANGUP:
430 case DATALINK_DIAL:
431 case DATALINK_LOGOUT:
432 case DATALINK_LOGIN:
433 return descriptor_IsSet(&dl->chat.desc, fdset);
434
435 case DATALINK_READY:
436 case DATALINK_LCP:
437 case DATALINK_AUTH:
438 case DATALINK_CBCP:
439 case DATALINK_OPEN:
440 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
441 descriptor_IsSet(&dl->physical->desc, fdset);
442 }
443 return 0;
444}
445
446static void
447datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
448{
449 struct datalink *dl = descriptor2datalink(d);
450
451 switch (dl->state) {
452 case DATALINK_CLOSED:
453 case DATALINK_OPENING:
454 break;
455
456 case DATALINK_HANGUP:
457 case DATALINK_DIAL:
458 case DATALINK_LOGOUT:
459 case DATALINK_LOGIN:
460 descriptor_Read(&dl->chat.desc, bundle, fdset);
461 break;
462
463 case DATALINK_READY:
464 case DATALINK_LCP:
465 case DATALINK_AUTH:
466 case DATALINK_CBCP:
467 case DATALINK_OPEN:
468 if (descriptor_IsSet(&dl->chap.desc, fdset))
469 descriptor_Read(&dl->chap.desc, bundle, fdset);
470 if (descriptor_IsSet(&dl->physical->desc, fdset))
471 descriptor_Read(&dl->physical->desc, bundle, fdset);
472 break;
473 }
474}
475
476static int
477datalink_Write(struct fdescriptor *d, struct bundle *bundle,
478 const fd_set *fdset)
479{
480 struct datalink *dl = descriptor2datalink(d);
481 int result = 0;
482
483 switch (dl->state) {
484 case DATALINK_CLOSED:
485 case DATALINK_OPENING:
486 break;
487
488 case DATALINK_HANGUP:
489 case DATALINK_DIAL:
490 case DATALINK_LOGOUT:
491 case DATALINK_LOGIN:
492 result = descriptor_Write(&dl->chat.desc, bundle, fdset);
493 break;
494
495 case DATALINK_READY:
496 case DATALINK_LCP:
497 case DATALINK_AUTH:
498 case DATALINK_CBCP:
499 case DATALINK_OPEN:
500 if (descriptor_IsSet(&dl->chap.desc, fdset))
501 result += descriptor_Write(&dl->chap.desc, bundle, fdset);
502 if (descriptor_IsSet(&dl->physical->desc, fdset))
503 result += descriptor_Write(&dl->physical->desc, bundle, fdset);
504 break;
505 }
506
507 return result;
508}
509
510static void
511datalink_ComeDown(struct datalink *dl, int how)
512{
513 int stayonline;
514
515 if (how == CLOSE_LCP)
516 datalink_DontHangup(dl);
517 else if (how == CLOSE_STAYDOWN)
518 datalink_StayDown(dl);
519
520 stayonline = dl->stayonline;
521 dl->stayonline = 0;
522
523 if (dl->state >= DATALINK_READY && stayonline) {
524 physical_StopDeviceTimer(dl->physical);
525 datalink_NewState(dl, DATALINK_READY);
526 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
527 physical_Offline(dl->physical);
528 if (dl->script.run && dl->state != DATALINK_OPENING) {
529 if (dl->state == DATALINK_LOGOUT) {
530 datalink_NewState(dl, DATALINK_HANGUP);
531 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
532 log_Printf(LogWARN, "Invalid hangup script\n");
533 } else {
534 datalink_NewState(dl, DATALINK_LOGOUT);
535 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
536 log_Printf(LogWARN, "Invalid logout script\n");
537 }
538 } else
539 datalink_HangupDone(dl);
540 }
541}
542
543static void
544datalink_LayerStart(void *v, struct fsm *fp)
545{
546 /* The given FSM is about to start up ! */
547 struct datalink *dl = (struct datalink *)v;
548
549 if (fp->proto == PROTO_LCP)
550 (*dl->parent->LayerStart)(dl->parent->object, fp);
551}
552
553static void
554datalink_LayerUp(void *v, struct fsm *fp)
555{
556 /* The given fsm is now up */
557 struct datalink *dl = (struct datalink *)v;
558 struct lcp *lcp = &dl->physical->link.lcp;
559
560 if (fp->proto == PROTO_LCP) {
561 datalink_GotAuthname(dl, "");
562 lcp->auth_ineed = lcp->want_auth;
563 lcp->auth_iwait = lcp->his_auth;
564 if (lcp->his_auth || lcp->want_auth) {
565 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
566 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
567 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
568 Auth2Nam(lcp->his_auth, lcp->his_authtype),
569 Auth2Nam(lcp->want_auth, lcp->want_authtype));
570 if (lcp->his_auth == PROTO_PAP)
571 auth_StartReq(&dl->pap);
572 if (lcp->want_auth == PROTO_CHAP)
573 auth_StartReq(&dl->chap.auth);
574 } else
575 datalink_AuthOk(dl);
576 } else if (fp->proto == PROTO_CCP)
577 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
578}
579
580static void
581datalink_AuthReInit(struct datalink *dl)
582{
583 auth_StopTimer(&dl->pap);
584 auth_StopTimer(&dl->chap.auth);
585 chap_ReInit(&dl->chap);
586}
587
588void
589datalink_GotAuthname(struct datalink *dl, const char *name)
590{
591 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
592 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
593}
594
595void
596datalink_NCPUp(struct datalink *dl)
597{
598 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
599
600 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
601 /* we've authenticated in multilink mode ! */
602 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
603 case MP_LINKSENT:
604 /* We've handed the link off to another ppp (well, we will soon) ! */
605 return;
606 case MP_UP:
607 /* First link in the bundle */
608 auth_Select(dl->bundle, dl->peer.authname);
609 bundle_CalculateBandwidth(dl->bundle);
610 /* fall through */
611 case MP_ADDED:
612 /* We're in multilink mode ! */
613 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
614 bundle_CalculateBandwidth(dl->bundle);
615 break;
616 case MP_FAILED:
617 datalink_AuthNotOk(dl);
618 return;
619 }
620 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
621 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
622 datalink_NewState(dl, DATALINK_OPEN);
623 bundle_CalculateBandwidth(dl->bundle);
624 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
625 return;
626 } else {
627 dl->bundle->ncp.mp.peer = dl->peer;
628 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
629 auth_Select(dl->bundle, dl->peer.authname);
630 }
631
632 if (ccpok) {
633 fsm_Up(&dl->physical->link.ccp.fsm);
634 fsm_Open(&dl->physical->link.ccp.fsm);
635 }
636 datalink_NewState(dl, DATALINK_OPEN);
637 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
638 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
639}
640
641void
642datalink_CBCPComplete(struct datalink *dl)
643{
644 datalink_NewState(dl, DATALINK_LCP);
645 datalink_AuthReInit(dl);
646 fsm_Close(&dl->physical->link.lcp.fsm);
647}
648
649void
650datalink_CBCPFailed(struct datalink *dl)
651{
652 cbcp_Down(&dl->cbcp);
653 datalink_CBCPComplete(dl);
654}
655
656void
657datalink_AuthOk(struct datalink *dl)
658{
659 if ((dl->physical->link.lcp.his_callback.opmask &
660 CALLBACK_BIT(CALLBACK_CBCP) ||
661 dl->physical->link.lcp.want_callback.opmask &
662 CALLBACK_BIT(CALLBACK_CBCP)) &&
663 !(dl->physical->link.lcp.want_callback.opmask &
664 CALLBACK_BIT(CALLBACK_AUTH))) {
665 /* We must have agreed CBCP if AUTH isn't there any more */
666 datalink_NewState(dl, DATALINK_CBCP);
667 cbcp_Up(&dl->cbcp);
668 } else if (dl->physical->link.lcp.want_callback.opmask) {
669 /* It's not CBCP */
670 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
671 datalink_NewState(dl, DATALINK_LCP);
672 datalink_AuthReInit(dl);
673 fsm_Close(&dl->physical->link.lcp.fsm);
674 } else
675 switch (dl->physical->link.lcp.his_callback.opmask) {
676 case 0:
677 datalink_NCPUp(dl);
678 break;
679
680 case CALLBACK_BIT(CALLBACK_AUTH):
681 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
682 sizeof dl->cbcp.fsm.phone);
683 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
684 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
685 dl->peer.authname);
686 *dl->cbcp.fsm.phone = '\0';
687 } else {
688 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
689 if (ptr)
690 *ptr = '\0'; /* Call back on the first number */
691 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
692 dl->cbcp.fsm.phone);
693 dl->cbcp.required = 1;
694 }
695 dl->cbcp.fsm.delay = 0;
696 datalink_NewState(dl, DATALINK_LCP);
697 datalink_AuthReInit(dl);
698 fsm_Close(&dl->physical->link.lcp.fsm);
699 break;
700
701 case CALLBACK_BIT(CALLBACK_E164):
702 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
703 sizeof dl->cbcp.fsm.phone - 1);
704 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
705 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
706 dl->cbcp.fsm.phone);
707 dl->cbcp.required = 1;
708 dl->cbcp.fsm.delay = 0;
709 datalink_NewState(dl, DATALINK_LCP);
710 datalink_AuthReInit(dl);
711 fsm_Close(&dl->physical->link.lcp.fsm);
712 break;
713
714 default:
715 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
716 dl->name);
717 datalink_NewState(dl, DATALINK_LCP);
718 datalink_AuthReInit(dl);
719 fsm_Close(&dl->physical->link.lcp.fsm);
720 break;
721 }
722}
723
724void
725datalink_AuthNotOk(struct datalink *dl)
726{
727 datalink_NewState(dl, DATALINK_LCP);
728 datalink_AuthReInit(dl);
729 fsm_Close(&dl->physical->link.lcp.fsm);
730}
731
732static void
733datalink_LayerDown(void *v, struct fsm *fp)
734{
735 /* The given FSM has been told to come down */
736 struct datalink *dl = (struct datalink *)v;
737
738 if (fp->proto == PROTO_LCP) {
739 switch (dl->state) {
740 case DATALINK_OPEN:
741 peerid_Init(&dl->peer);
742 fsm2initial(&dl->physical->link.ccp.fsm);
743 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
744 (*dl->parent->LayerDown)(dl->parent->object, fp);
745 /* fall through (just in case) */
746
747 case DATALINK_CBCP:
748 if (!dl->cbcp.required)
749 cbcp_Down(&dl->cbcp);
750 /* fall through (just in case) */
751
752 case DATALINK_AUTH:
753 timer_Stop(&dl->pap.authtimer);
754 timer_Stop(&dl->chap.auth.authtimer);
755 }
756 datalink_NewState(dl, DATALINK_LCP);
757 datalink_AuthReInit(dl);
758 }
759}
760
761static void
762datalink_LayerFinish(void *v, struct fsm *fp)
763{
764 /* The given fsm is now down */
765 struct datalink *dl = (struct datalink *)v;
766
767 if (fp->proto == PROTO_LCP) {
768 fsm2initial(fp);
769 (*dl->parent->LayerFinish)(dl->parent->object, fp);
770 datalink_ComeDown(dl, CLOSE_NORMAL);
771 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
772 fsm_Open(fp); /* CCP goes to ST_STOPPED */
773}
774
775struct datalink *
776datalink_Create(const char *name, struct bundle *bundle, int type)
777{
778 struct datalink *dl;
779
780 dl = (struct datalink *)malloc(sizeof(struct datalink));
781 if (dl == NULL)
782 return dl;
783
784 dl->desc.type = DATALINK_DESCRIPTOR;
785 dl->desc.UpdateSet = datalink_UpdateSet;
786 dl->desc.IsSet = datalink_IsSet;
787 dl->desc.Read = datalink_Read;
788 dl->desc.Write = datalink_Write;
789
790 dl->state = DATALINK_CLOSED;
791
792 *dl->cfg.script.dial = '\0';
793 *dl->cfg.script.login = '\0';
794 *dl->cfg.script.logout = '\0';
795 *dl->cfg.script.hangup = '\0';
796 *dl->cfg.phone.list = '\0';
797 *dl->phone.list = '\0';
798 dl->phone.next = NULL;
799 dl->phone.alt = NULL;
800 dl->phone.chosen = "N/A";
801 dl->stayonline = 0;
802 dl->script.run = 1;
803 dl->script.packetmode = 1;
804 mp_linkInit(&dl->mp);
805
806 dl->bundle = bundle;
807 dl->next = NULL;
808
809 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
810
811 dl->dial.tries = 0;
812 dl->cfg.dial.max = 1;
813 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
814 dl->cfg.dial.timeout = DIAL_TIMEOUT;
815 dl->cfg.dial.inc = 0;
816 dl->cfg.dial.maxinc = 10;
817
818 dl->reconnect_tries = 0;
819 dl->cfg.reconnect.max = 0;
820 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
821
822 dl->cfg.callback.opmask = 0;
823 dl->cfg.cbcp.delay = 0;
824 *dl->cfg.cbcp.phone = '\0';
825 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
826
827 dl->name = strdup(name);
828 peerid_Init(&dl->peer);
829 dl->parent = &bundle->fsm;
830 dl->fsmp.LayerStart = datalink_LayerStart;
831 dl->fsmp.LayerUp = datalink_LayerUp;
832 dl->fsmp.LayerDown = datalink_LayerDown;
833 dl->fsmp.LayerFinish = datalink_LayerFinish;
834 dl->fsmp.object = dl;
835
836 if ((dl->physical = physical_Create(dl, type)) == NULL) {
837 free(dl->name);
838 free(dl);
839 return NULL;
840 }
841
842 pap_Init(&dl->pap, dl->physical);
843 chap_Init(&dl->chap, dl->physical);
844 cbcp_Init(&dl->cbcp, dl->physical);
845
846 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
847 chat_Init(&dl->chat, dl->physical);
848
849 log_Printf(LogPHASE, "%s: Created in %s state\n",
850 dl->name, datalink_State(dl));
851
852 return dl;
853}
854
855struct datalink *
856datalink_Clone(struct datalink *odl, const char *name)
857{
858 struct datalink *dl;
859
860 dl = (struct datalink *)malloc(sizeof(struct datalink));
861 if (dl == NULL)
862 return dl;
863
864 dl->desc.type = DATALINK_DESCRIPTOR;
865 dl->desc.UpdateSet = datalink_UpdateSet;
866 dl->desc.IsSet = datalink_IsSet;
867 dl->desc.Read = datalink_Read;
868 dl->desc.Write = datalink_Write;
869
870 dl->state = DATALINK_CLOSED;
871
872 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
873 mp_linkInit(&dl->mp);
874 *dl->phone.list = '\0';
875 dl->phone.next = NULL;
876 dl->phone.alt = NULL;
877 dl->phone.chosen = "N/A";
878 dl->bundle = odl->bundle;
879 dl->next = NULL;
880 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
881 dl->dial.tries = 0;
882 dl->reconnect_tries = 0;
883 dl->name = strdup(name);
884 peerid_Init(&dl->peer);
885 dl->parent = odl->parent;
886 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
887 dl->fsmp.object = dl;
888
889 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
890 free(dl->name);
891 free(dl);
892 return NULL;
893 }
894 pap_Init(&dl->pap, dl->physical);
895 dl->pap.cfg = odl->pap.cfg;
896
897 chap_Init(&dl->chap, dl->physical);
898 dl->chap.auth.cfg = odl->chap.auth.cfg;
899
900 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
901 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
902 sizeof dl->physical->link.lcp.cfg);
903 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
904 sizeof dl->physical->link.ccp.cfg);
905 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
906 sizeof dl->physical->async.cfg);
907
908 cbcp_Init(&dl->cbcp, dl->physical);
909
910 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
911 chat_Init(&dl->chat, dl->physical);
912
913 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
914 dl->name, datalink_State(dl));
915
916 return dl;
917}
918
919struct datalink *
920datalink_Destroy(struct datalink *dl)
921{
922 struct datalink *result;
923
924 if (dl->state != DATALINK_CLOSED) {
925 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
926 datalink_State(dl));
927 switch (dl->state) {
928 case DATALINK_HANGUP:
929 case DATALINK_DIAL:
930 case DATALINK_LOGIN:
931 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
932 break;
933 }
934 }
935
936 chat_Destroy(&dl->chat);
937 timer_Stop(&dl->dial.timer);
938 result = dl->next;
939 physical_Destroy(dl->physical);
940 free(dl->name);
941 free(dl);
942
943 return result;
944}
945
946void
947datalink_Up(struct datalink *dl, int runscripts, int packetmode)
948{
949 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
950 /* Ignore scripts */
951 runscripts = 0;
952
953 switch (dl->state) {
954 case DATALINK_CLOSED:
955 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
956 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
957 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
958 datalink_NewState(dl, DATALINK_OPENING);
959 dl->reconnect_tries =
960 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
961 dl->dial.tries = dl->cfg.dial.max;
962 dl->script.run = runscripts;
963 dl->script.packetmode = packetmode;
964 break;
965
966 case DATALINK_OPENING:
967 if (!dl->script.run && runscripts)
968 dl->script.run = 1;
969 /* fall through */
970
971 case DATALINK_DIAL:
972 case DATALINK_LOGIN:
973 case DATALINK_READY:
974 if (!dl->script.packetmode && packetmode) {
975 dl->script.packetmode = 1;
976 if (dl->state == DATALINK_READY) {
977 dl->script.run = 0;
978 datalink_NewState(dl, DATALINK_CARRIER);
979 }
980 }
981 break;
982 }
983}
984
985void
986datalink_Close(struct datalink *dl, int how)
987{
988 /* Please close */
989 switch (dl->state) {
990 case DATALINK_OPEN:
991 peerid_Init(&dl->peer);
992 fsm2initial(&dl->physical->link.ccp.fsm);
993 /* fall through */
994
995 case DATALINK_CBCP:
996 case DATALINK_AUTH:
997 case DATALINK_LCP:
998 datalink_AuthReInit(dl);
999 if (how == CLOSE_LCP)
1000 datalink_DontHangup(dl);
1001 else if (how == CLOSE_STAYDOWN)
1002 datalink_StayDown(dl);
1003 fsm_Close(&dl->physical->link.lcp.fsm);
1004 break;
1005
1006 default:
1007 datalink_ComeDown(dl, how);
1008 }
1009}
1010
1011void
1012datalink_Down(struct datalink *dl, int how)
1013{
1014 /* Carrier is lost */
1015 switch (dl->state) {
1016 case DATALINK_OPEN:
1017 peerid_Init(&dl->peer);
1018 fsm2initial(&dl->physical->link.ccp.fsm);
1019 /* fall through */
1020
1021 case DATALINK_CBCP:
1022 case DATALINK_AUTH:
1023 case DATALINK_LCP:
1024 fsm2initial(&dl->physical->link.lcp.fsm);
1025 if (dl->state == DATALINK_OPENING)
1026 return; /* we're doing a callback... */
1027 /* fall through */
1028
1029 default:
1030 datalink_ComeDown(dl, how);
1031 }
1032}
1033
1034void
1035datalink_StayDown(struct datalink *dl)
1036{
1037 dl->dial.tries = -1;
1038 dl->reconnect_tries = 0;
1039 dl->stayonline = 0;
1040}
1041
1042void
1043datalink_DontHangup(struct datalink *dl)
1044{
1045 dl->dial.tries = -1;
1046 dl->reconnect_tries = 0;
1047 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
1048}
1049
1050int
1051datalink_Show(struct cmdargs const *arg)
1052{
1053 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1054 prompt_Printf(arg->prompt, " State: %s\n",
1055 datalink_State(arg->cx));
1056 prompt_Printf(arg->prompt, " Peer name: ");
1057 if (*arg->cx->peer.authname)
1058 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1059 else if (arg->cx->state == DATALINK_OPEN)
1060 prompt_Printf(arg->prompt, "None requested\n");
1061 else
1062 prompt_Printf(arg->prompt, "N/A\n");
1063 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1064 mp_Enddisc(arg->cx->peer.enddisc.class,
1065 arg->cx->peer.enddisc.address,
1066 arg->cx->peer.enddisc.len));
1067
1068 prompt_Printf(arg->prompt, "\nDefaults:\n");
1069 prompt_Printf(arg->prompt, " Phone List: %s\n",
1070 arg->cx->cfg.phone.list);
1071 if (arg->cx->cfg.dial.max)
1072 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1073 arg->cx->cfg.dial.max);
1074 else
1075 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1076 if (arg->cx->cfg.dial.next_timeout >= 0)
1077 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1078 else
1079 prompt_Printf(arg->prompt, "random/");
1080 if (arg->cx->cfg.dial.timeout >= 0)
1081 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1082 else
1083 prompt_Printf(arg->prompt, "random\n");
1084 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1085 arg->cx->cfg.reconnect.max);
1086 if (arg->cx->cfg.reconnect.timeout > 0)
1087 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1088 else
1089 prompt_Printf(arg->prompt, "random\n");
1090 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1091 PHYS_DIRECT ? "accepted: " : "requested:");
1092 if (!arg->cx->cfg.callback.opmask)
1093 prompt_Printf(arg->prompt, "none\n");
1094 else {
1095 int comma = 0;
1096
1097 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1098 prompt_Printf(arg->prompt, "none");
1099 comma = 1;
1100 }
1101 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1102 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1103 comma = 1;
1104 }
1105 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1106 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1107 if (arg->cx->physical->type != PHYS_DIRECT)
1108 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1109 comma = 1;
1110 }
1111 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1112 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1113 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1114 arg->cx->cfg.cbcp.delay);
1115 prompt_Printf(arg->prompt, " phone: ");
1116 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1117 if (arg->cx->physical->type & PHYS_DIRECT)
1118 prompt_Printf(arg->prompt, "Caller decides\n");
1119 else
1120 prompt_Printf(arg->prompt, "Dialback server decides\n");
1121 } else
1122 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1123 prompt_Printf(arg->prompt, " timeout: %lds\n",
1124 arg->cx->cfg.cbcp.fsmretry);
1125 } else
1126 prompt_Printf(arg->prompt, "\n");
1127 }
1128
1129 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1130 arg->cx->cfg.script.dial);
1131 prompt_Printf(arg->prompt, " Login Script: %s\n",
1132 arg->cx->cfg.script.login);
1133 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1134 arg->cx->cfg.script.logout);
1135 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1136 arg->cx->cfg.script.hangup);
1137 return 0;
1138}
1139
1140int
1141datalink_SetReconnect(struct cmdargs const *arg)
1142{
1143 if (arg->argc == arg->argn+2) {
1144 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1145 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1146 return 0;
1147 }
1148 return -1;
1149}
1150
1151int
1152datalink_SetRedial(struct cmdargs const *arg)
1153{
1154 const char *sep, *osep;
1155 int timeout, inc, maxinc, tries;
1156
1157 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1158 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1159 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1160 arg->cx->cfg.dial.timeout = -1;
1161 randinit();
1162 } else {
1163 timeout = atoi(arg->argv[arg->argn]);
1164
1165 if (timeout >= 0)
1166 arg->cx->cfg.dial.timeout = timeout;
1167 else {
1168 log_Printf(LogWARN, "Invalid redial timeout\n");
1169 return -1;
1170 }
1171 }
1172
1173 sep = strchr(arg->argv[arg->argn], '+');
1174 if (sep) {
1175 inc = atoi(++sep);
1176 osep = sep;
1177 if (inc >= 0)
1178 arg->cx->cfg.dial.inc = inc;
1179 else {
1180 log_Printf(LogWARN, "Invalid timeout increment\n");
1181 return -1;
1182 }
1183 sep = strchr(sep, '-');
1184 if (sep) {
1185 maxinc = atoi(++sep);
1186 if (maxinc >= 0)
1187 arg->cx->cfg.dial.maxinc = maxinc;
1188 else {
1189 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1190 return -1;
1191 }
1192 } else {
1193 /* Default timeout increment */
1194 arg->cx->cfg.dial.maxinc = 10;
1195 sep = osep;
1196 }
1197 } else {
1198 /* Default timeout increment & max increment */
1199 arg->cx->cfg.dial.inc = 0;
1200 arg->cx->cfg.dial.maxinc = 10;
1201 sep = arg->argv[arg->argn];
1202 }
1203
1204 sep = strchr(sep, '.');
1205 if (sep) {
1206 if (strcasecmp(++sep, "random") == 0) {
1207 arg->cx->cfg.dial.next_timeout = -1;
1208 randinit();
1209 } else {
1210 timeout = atoi(sep);
1211 if (timeout >= 0)
1212 arg->cx->cfg.dial.next_timeout = timeout;
1213 else {
1214 log_Printf(LogWARN, "Invalid next redial timeout\n");
1215 return -1;
1216 }
1217 }
1218 } else
1219 /* Default next timeout */
1220 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1221
1222 if (arg->argc == arg->argn+2) {
1223 tries = atoi(arg->argv[arg->argn+1]);
1224
1225 if (tries >= 0) {
1226 arg->cx->cfg.dial.max = tries;
1227 } else {
1228 log_Printf(LogWARN, "Invalid retry value\n");
1229 return 1;
1230 }
1231 }
1232 return 0;
1233 }
1234
1235 return -1;
1236}
1237
1238static const char * const states[] = {
1239 "closed",
1240 "opening",
1241 "hangup",
1242 "dial",
1243 "carrier",
1244 "logout",
1245 "login",
1246 "ready",
1247 "lcp",
1248 "auth",
1249 "cbcp",
1250 "open"
1251};
1252
1253const char *
1254datalink_State(struct datalink *dl)
1255{
1256 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
1257 return "unknown";
1258 return states[dl->state];
1259}
1260
1261static void
1262datalink_NewState(struct datalink *dl, int state)
1263{
1264 if (state != dl->state) {
1265 if (state >= 0 && state < sizeof states / sizeof states[0]) {
1266 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1267 states[state]);
1268 dl->state = state;
1269 } else
1270 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1271 }
1272}
1273
1274struct datalink *
1275iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1276 int fd, int *auxfd, int *nauxfd)
1277{
1278 struct datalink *dl, *cdl;
1279 struct fsm_retry copy;
1280 char *oname;
1281
1282 dl = (struct datalink *)iov[(*niov)++].iov_base;
1283 dl->name = iov[*niov].iov_base;
1284
1285 if (dl->name[DATALINK_MAXNAME-1]) {
1286 dl->name[DATALINK_MAXNAME-1] = '\0';
1287 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1288 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1289 }
1290
1291 /* Make sure the name is unique ! */
1292 oname = NULL;
1293 do {
1294 for (cdl = bundle->links; cdl; cdl = cdl->next)
1295 if (!strcasecmp(dl->name, cdl->name)) {
1296 if (oname)
1297 free(datalink_NextName(dl));
1298 else
1299 oname = datalink_NextName(dl);
1300 break; /* Keep renaming 'till we have no conflicts */
1301 }
1302 } while (cdl);
1303
1304 if (oname) {
1305 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1306 free(oname);
1307 } else {
1308 dl->name = strdup(dl->name);
1309 free(iov[*niov].iov_base);
1310 }
1311 (*niov)++;
1312
1313 dl->desc.type = DATALINK_DESCRIPTOR;
1314 dl->desc.UpdateSet = datalink_UpdateSet;
1315 dl->desc.IsSet = datalink_IsSet;
1316 dl->desc.Read = datalink_Read;
1317 dl->desc.Write = datalink_Write;
1318
1319 mp_linkInit(&dl->mp);
1320 *dl->phone.list = '\0';
1321 dl->phone.next = NULL;
1322 dl->phone.alt = NULL;
1323 dl->phone.chosen = "N/A";
1324
1325 dl->bundle = bundle;
1326 dl->next = NULL;
1327 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1328 dl->dial.tries = 0;
1329 dl->reconnect_tries = 0;
1330 dl->parent = &bundle->fsm;
1331 dl->fsmp.LayerStart = datalink_LayerStart;
1332 dl->fsmp.LayerUp = datalink_LayerUp;
1333 dl->fsmp.LayerDown = datalink_LayerDown;
1334 dl->fsmp.LayerFinish = datalink_LayerFinish;
1335 dl->fsmp.object = dl;
1336
1337 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1338
1339 if (!dl->physical) {
1340 free(dl->name);
1341 free(dl);
1342 dl = NULL;
1343 } else {
1344 copy = dl->pap.cfg.fsm;
1345 pap_Init(&dl->pap, dl->physical);
1346 dl->pap.cfg.fsm = copy;
1347
1348 copy = dl->chap.auth.cfg.fsm;
1349 chap_Init(&dl->chap, dl->physical);
1350 dl->chap.auth.cfg.fsm = copy;
1351
1352 cbcp_Init(&dl->cbcp, dl->physical);
1353
1354 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1355 chat_Init(&dl->chat, dl->physical);
1356
1357 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1358 dl->name, datalink_State(dl));
1359 }
1360
1361 return dl;
1362}
1363
1364int
1365datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1366 int *auxfd, int *nauxfd)
1367{
1368 /* If `dl' is NULL, we're allocating before a Fromiov() */
1369 int link_fd;
1370
1371 if (dl) {
1372 timer_Stop(&dl->dial.timer);
1373 /* The following is purely for the sake of paranoia */
1374 cbcp_Down(&dl->cbcp);
1375 timer_Stop(&dl->pap.authtimer);
1376 timer_Stop(&dl->chap.auth.authtimer);
1377 }
1378
1379 if (*niov >= maxiov - 1) {
1380 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1381 if (dl) {
1382 free(dl->name);
1383 free(dl);
1384 }
1385 return -1;
1386 }
1387
1388 iov[*niov].iov_base = (void *)dl;
1389 iov[(*niov)++].iov_len = sizeof *dl;
1390 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1391 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1392
1393 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1394 nauxfd);
1395
1396 if (link_fd == -1 && dl) {
1397 free(dl->name);
1398 free(dl);
1399 }
1400
1401 return link_fd;
1402}
1403
1404void
1405datalink_Rename(struct datalink *dl, const char *name)
1406{
1407 free(dl->name);
1408 dl->physical->link.name = dl->name = strdup(name);
1409}
1410
1411char *
1412datalink_NextName(struct datalink *dl)
1413{
1414 int f, n;
1415 char *name, *oname;
1416
1417 n = strlen(dl->name);
1418 name = (char *)malloc(n+3);
1419 for (f = n - 1; f >= 0; f--)
1420 if (!isdigit(dl->name[f]))
1421 break;
1422 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1423 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1424 oname = dl->name;
1425 dl->name = name;
1426 /* our physical link name isn't updated (it probably isn't created yet) */
1427 return oname;
1428}
1429
1430int
1431datalink_SetMode(struct datalink *dl, int mode)
1432{
1433 if (!physical_SetMode(dl->physical, mode))
1434 return 0;
1435 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1436 dl->script.run = 0;
1437 if (dl->physical->type == PHYS_DIRECT)
1438 dl->reconnect_tries = 0;
1439 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1440 dl->state <= DATALINK_READY)
1441 datalink_Up(dl, 1, 1);
1442 return 1;
1443}
1444
1445int
1446datalink_GetDialTimeout(struct datalink *dl)
1447{
1448 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1449
1450 if (dl->dial.incs < dl->cfg.dial.maxinc)
1451 dl->dial.incs++;
1452
1453 return result;
1454}
2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/ppp/datalink.c 91623 2002-03-04 10:08:57Z brian $
27 */
28
29#include <sys/param.h>
30#include <netinet/in.h>
31#include <netinet/in_systm.h>
32#include <netinet/ip.h>
33#include <sys/socket.h>
34#include <sys/un.h>
35
36#include <ctype.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <sys/uio.h>
41#include <termios.h>
42
43#include "layer.h"
44#include "mbuf.h"
45#include "log.h"
46#include "defs.h"
47#include "timer.h"
48#include "fsm.h"
49#include "descriptor.h"
50#include "lqr.h"
51#include "hdlc.h"
52#include "lcp.h"
53#include "async.h"
54#include "throughput.h"
55#include "ccp.h"
56#include "link.h"
57#include "physical.h"
58#include "iplist.h"
59#include "slcompress.h"
60#include "ncpaddr.h"
61#include "ip.h"
62#include "ipcp.h"
63#include "filter.h"
64#include "mp.h"
65#ifndef NORADIUS
66#include "radius.h"
67#endif
68#include "ipv6cp.h"
69#include "ncp.h"
70#include "bundle.h"
71#include "chat.h"
72#include "auth.h"
73#include "prompt.h"
74#include "proto.h"
75#include "pap.h"
76#include "chap.h"
77#include "command.h"
78#include "cbcp.h"
79#include "datalink.h"
80
81static void datalink_LoginDone(struct datalink *);
82static void datalink_NewState(struct datalink *, int);
83
84static void
85datalink_OpenTimeout(void *v)
86{
87 struct datalink *dl = (struct datalink *)v;
88
89 timer_Stop(&dl->dial.timer);
90 if (dl->state == DATALINK_OPENING)
91 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
92}
93
94static int
95datalink_StartDialTimer(struct datalink *dl, int Timeout)
96{
97 int result = Timeout;
98
99 timer_Stop(&dl->dial.timer);
100 if (Timeout < 0)
101 result = (random() % DIAL_TIMEOUT) + 1;
102 dl->dial.timer.load = result ? result * SECTICKS : 1;
103 dl->dial.timer.func = datalink_OpenTimeout;
104 dl->dial.timer.name = "dial";
105 dl->dial.timer.arg = dl;
106 timer_Start(&dl->dial.timer);
107 if (dl->state == DATALINK_OPENING)
108 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
109 dl->name, result);
110 return result;
111}
112
113static void
114datalink_HangupDone(struct datalink *dl)
115{
116 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
117 dl->physical->fd != -1) {
118 /* Don't close our device if the link is dedicated */
119 datalink_LoginDone(dl);
120 return;
121 }
122
123 chat_Finish(&dl->chat);
124 physical_Close(dl->physical);
125 dl->phone.chosen = "N/A";
126
127 if (dl->cbcp.required) {
128 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
129 dl->cfg.callback.opmask = 0;
130 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
131 sizeof dl->cfg.phone.list - 1);
132 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
133 dl->phone.alt = dl->phone.next = NULL;
134 dl->reconnect_tries = dl->cfg.reconnect.max;
135 dl->dial.tries = dl->cfg.dial.max;
136 dl->dial.incs = 0;
137 dl->script.run = 1;
138 dl->script.packetmode = 1;
139 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
140 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
141 bundle_LinksRemoved(dl->bundle);
142 /* if dial.timeout is < 0 (random), we don't override fsm.delay */
143 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
144 dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
145 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
146 cbcp_Down(&dl->cbcp);
147 datalink_NewState(dl, DATALINK_OPENING);
148 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
149 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
150 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
151 } else if (dl->bundle->CleaningUp ||
152 (dl->physical->type == PHYS_DIRECT) ||
153 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
154 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
155 datalink_NewState(dl, DATALINK_CLOSED);
156 dl->dial.tries = -1;
157 dl->dial.incs = 0;
158 dl->reconnect_tries = 0;
159 bundle_LinkClosed(dl->bundle, dl);
160 if (!dl->bundle->CleaningUp &&
161 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
162 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
163 } else {
164 datalink_NewState(dl, DATALINK_OPENING);
165 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
166 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
167 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
168 if (dl->dial.tries < 0) {
169 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
170 dl->dial.tries = dl->cfg.dial.max;
171 dl->dial.incs = 0;
172 dl->reconnect_tries--;
173 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
174 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
175 dl->cfg.reconnect.max);
176 bundle_Notify(dl->bundle, EX_RECONNECT);
177 } else {
178 if (dl->phone.next == NULL)
179 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
180 else
181 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
182 bundle_Notify(dl->bundle, EX_REDIAL);
183 }
184 }
185}
186
187const char *
188datalink_ChoosePhoneNumber(struct datalink *dl)
189{
190 char *phone;
191
192 if (dl->phone.alt == NULL) {
193 if (dl->phone.next == NULL) {
194 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
195 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
196 if (*dl->phone.list == '\0')
197 return "";
198 dl->phone.next = dl->phone.list;
199 }
200 dl->phone.alt = strsep(&dl->phone.next, ":");
201 }
202 phone = strsep(&dl->phone.alt, "|");
203 dl->phone.chosen = *phone ? phone : "[NONE]";
204 if (*phone)
205 log_Printf(LogCHAT, "Phone: %s\n", phone);
206 return phone;
207}
208
209static void
210datalink_LoginDone(struct datalink *dl)
211{
212 chat_Finish(&dl->chat);
213
214 if (!dl->script.packetmode) {
215 dl->dial.tries = -1;
216 dl->dial.incs = 0;
217 datalink_NewState(dl, DATALINK_READY);
218 } else if (!physical_Raw(dl->physical)) {
219 dl->dial.tries = 0;
220 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
221 if (dl->script.run) {
222 datalink_NewState(dl, DATALINK_LOGOUT);
223 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
224 log_Printf(LogWARN, "Invalid logout script\n");
225 } else {
226 physical_StopDeviceTimer(dl->physical);
227 if (dl->physical->type == PHYS_DEDICATED)
228 /* force a redial timeout */
229 physical_Close(dl->physical);
230 datalink_HangupDone(dl);
231 }
232 } else {
233 dl->dial.tries = -1;
234 dl->dial.incs = 0;
235
236 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
237 async_Setup(&dl->physical->async);
238
239 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
240 0 : dl->physical->link.lcp.cfg.openmode);
241 ccp_Setup(&dl->physical->link.ccp);
242
243 datalink_NewState(dl, DATALINK_LCP);
244 fsm_Up(&dl->physical->link.lcp.fsm);
245 fsm_Open(&dl->physical->link.lcp.fsm);
246 }
247}
248
249static int
250datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
251 int *n)
252{
253 struct datalink *dl = descriptor2datalink(d);
254 int result;
255
256 result = 0;
257 switch (dl->state) {
258 case DATALINK_CLOSED:
259 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
260 PHYS_FOREGROUND|PHYS_DDIAL)) &&
261 !dl->bundle->CleaningUp)
262 /*
263 * Our first time in - DEDICATED & DDIAL never come down, and
264 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
265 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
266 * and fall through.
267 */
268 datalink_Up(dl, 1, 1);
269 else
270 break;
271 /* fall through */
272
273 case DATALINK_OPENING:
274 if (dl->dial.timer.state != TIMER_RUNNING) {
275 if (--dl->dial.tries < 0)
276 dl->dial.tries = 0;
277 if (physical_Open(dl->physical, dl->bundle) >= 0) {
278 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
279 "Type `~?' for help\r\n", dl->name,
280 dl->physical->name.full);
281 if (dl->script.run) {
282 datalink_NewState(dl, DATALINK_DIAL);
283 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
284 *dl->cfg.script.dial ?
285 datalink_ChoosePhoneNumber(dl) : ""))
286 log_Printf(LogWARN, "Invalid dial script\n");
287 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
288 dl->cfg.dial.max)
289 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
290 dl->name, dl->cfg.dial.max - dl->dial.tries,
291 dl->cfg.dial.max);
292 } else
293 datalink_NewState(dl, DATALINK_CARRIER);
294 return datalink_UpdateSet(d, r, w, e, n);
295 } else {
296 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
297 dl->cfg.dial.max)
298 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
299 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
300 else
301 log_Printf(LogCHAT, "Failed to open device\n");
302
303 if (dl->bundle->CleaningUp ||
304 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
305 dl->cfg.dial.max && dl->dial.tries == 0)) {
306 datalink_NewState(dl, DATALINK_CLOSED);
307 dl->reconnect_tries = 0;
308 dl->dial.tries = -1;
309 log_WritePrompts(dl, "Failed to open %s\n",
310 dl->physical->name.full);
311 bundle_LinkClosed(dl->bundle, dl);
312 }
313 if (!dl->bundle->CleaningUp) {
314 int timeout;
315
316 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
317 bundle_Notify(dl->bundle, EX_REDIAL);
318 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
319 dl->physical->name.full, timeout);
320 }
321 }
322 }
323 break;
324
325 case DATALINK_CARRIER:
326 /* Wait for carrier on the device */
327 switch (physical_AwaitCarrier(dl->physical)) {
328 case CARRIER_PENDING:
329 log_Printf(LogDEBUG, "Waiting for carrier\n");
330 return 0; /* A device timer is running to wake us up again */
331
332 case CARRIER_OK:
333 if (dl->script.run) {
334 datalink_NewState(dl, DATALINK_LOGIN);
335 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
336 log_Printf(LogWARN, "Invalid login script\n");
337 } else
338 datalink_LoginDone(dl);
339 return datalink_UpdateSet(d, r, w, e, n);
340
341 case CARRIER_LOST:
342 physical_Offline(dl->physical); /* Is this required ? */
343 if (dl->script.run) {
344 datalink_NewState(dl, DATALINK_HANGUP);
345 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
346 log_Printf(LogWARN, "Invalid hangup script\n");
347 return datalink_UpdateSet(d, r, w, e, n);
348 } else {
349 datalink_HangupDone(dl);
350 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
351 }
352 }
353
354 case DATALINK_HANGUP:
355 case DATALINK_DIAL:
356 case DATALINK_LOGOUT:
357 case DATALINK_LOGIN:
358 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
359 switch (dl->chat.state) {
360 case CHAT_DONE:
361 /* script succeeded */
362 switch(dl->state) {
363 case DATALINK_HANGUP:
364 datalink_HangupDone(dl);
365 break;
366 case DATALINK_DIAL:
367 datalink_NewState(dl, DATALINK_CARRIER);
368 return datalink_UpdateSet(d, r, w, e, n);
369 case DATALINK_LOGOUT:
370 datalink_NewState(dl, DATALINK_HANGUP);
371 physical_Offline(dl->physical);
372 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
373 log_Printf(LogWARN, "Invalid hangup script\n");
374 return datalink_UpdateSet(d, r, w, e, n);
375 case DATALINK_LOGIN:
376 dl->phone.alt = NULL;
377 datalink_LoginDone(dl);
378 return datalink_UpdateSet(d, r, w, e, n);
379 }
380 break;
381 case CHAT_FAILED:
382 /* Going down - script failed */
383 log_Printf(LogWARN, "Chat script failed\n");
384 switch(dl->state) {
385 case DATALINK_HANGUP:
386 datalink_HangupDone(dl);
387 break;
388 case DATALINK_DIAL:
389 case DATALINK_LOGOUT:
390 case DATALINK_LOGIN:
391 datalink_NewState(dl, DATALINK_HANGUP);
392 physical_Offline(dl->physical);
393 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
394 log_Printf(LogWARN, "Invalid hangup script\n");
395 return datalink_UpdateSet(d, r, w, e, n);
396 }
397 break;
398 }
399 break;
400
401 case DATALINK_READY:
402 case DATALINK_LCP:
403 case DATALINK_AUTH:
404 case DATALINK_CBCP:
405 case DATALINK_OPEN:
406 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
407 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
408 break;
409 }
410 return result;
411}
412
413int
414datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
415{
416 return physical_RemoveFromSet(dl->physical, r, w, e);
417}
418
419static int
420datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
421{
422 struct datalink *dl = descriptor2datalink(d);
423
424 switch (dl->state) {
425 case DATALINK_CLOSED:
426 case DATALINK_OPENING:
427 break;
428
429 case DATALINK_HANGUP:
430 case DATALINK_DIAL:
431 case DATALINK_LOGOUT:
432 case DATALINK_LOGIN:
433 return descriptor_IsSet(&dl->chat.desc, fdset);
434
435 case DATALINK_READY:
436 case DATALINK_LCP:
437 case DATALINK_AUTH:
438 case DATALINK_CBCP:
439 case DATALINK_OPEN:
440 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
441 descriptor_IsSet(&dl->physical->desc, fdset);
442 }
443 return 0;
444}
445
446static void
447datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
448{
449 struct datalink *dl = descriptor2datalink(d);
450
451 switch (dl->state) {
452 case DATALINK_CLOSED:
453 case DATALINK_OPENING:
454 break;
455
456 case DATALINK_HANGUP:
457 case DATALINK_DIAL:
458 case DATALINK_LOGOUT:
459 case DATALINK_LOGIN:
460 descriptor_Read(&dl->chat.desc, bundle, fdset);
461 break;
462
463 case DATALINK_READY:
464 case DATALINK_LCP:
465 case DATALINK_AUTH:
466 case DATALINK_CBCP:
467 case DATALINK_OPEN:
468 if (descriptor_IsSet(&dl->chap.desc, fdset))
469 descriptor_Read(&dl->chap.desc, bundle, fdset);
470 if (descriptor_IsSet(&dl->physical->desc, fdset))
471 descriptor_Read(&dl->physical->desc, bundle, fdset);
472 break;
473 }
474}
475
476static int
477datalink_Write(struct fdescriptor *d, struct bundle *bundle,
478 const fd_set *fdset)
479{
480 struct datalink *dl = descriptor2datalink(d);
481 int result = 0;
482
483 switch (dl->state) {
484 case DATALINK_CLOSED:
485 case DATALINK_OPENING:
486 break;
487
488 case DATALINK_HANGUP:
489 case DATALINK_DIAL:
490 case DATALINK_LOGOUT:
491 case DATALINK_LOGIN:
492 result = descriptor_Write(&dl->chat.desc, bundle, fdset);
493 break;
494
495 case DATALINK_READY:
496 case DATALINK_LCP:
497 case DATALINK_AUTH:
498 case DATALINK_CBCP:
499 case DATALINK_OPEN:
500 if (descriptor_IsSet(&dl->chap.desc, fdset))
501 result += descriptor_Write(&dl->chap.desc, bundle, fdset);
502 if (descriptor_IsSet(&dl->physical->desc, fdset))
503 result += descriptor_Write(&dl->physical->desc, bundle, fdset);
504 break;
505 }
506
507 return result;
508}
509
510static void
511datalink_ComeDown(struct datalink *dl, int how)
512{
513 int stayonline;
514
515 if (how == CLOSE_LCP)
516 datalink_DontHangup(dl);
517 else if (how == CLOSE_STAYDOWN)
518 datalink_StayDown(dl);
519
520 stayonline = dl->stayonline;
521 dl->stayonline = 0;
522
523 if (dl->state >= DATALINK_READY && stayonline) {
524 physical_StopDeviceTimer(dl->physical);
525 datalink_NewState(dl, DATALINK_READY);
526 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
527 physical_Offline(dl->physical);
528 if (dl->script.run && dl->state != DATALINK_OPENING) {
529 if (dl->state == DATALINK_LOGOUT) {
530 datalink_NewState(dl, DATALINK_HANGUP);
531 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
532 log_Printf(LogWARN, "Invalid hangup script\n");
533 } else {
534 datalink_NewState(dl, DATALINK_LOGOUT);
535 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
536 log_Printf(LogWARN, "Invalid logout script\n");
537 }
538 } else
539 datalink_HangupDone(dl);
540 }
541}
542
543static void
544datalink_LayerStart(void *v, struct fsm *fp)
545{
546 /* The given FSM is about to start up ! */
547 struct datalink *dl = (struct datalink *)v;
548
549 if (fp->proto == PROTO_LCP)
550 (*dl->parent->LayerStart)(dl->parent->object, fp);
551}
552
553static void
554datalink_LayerUp(void *v, struct fsm *fp)
555{
556 /* The given fsm is now up */
557 struct datalink *dl = (struct datalink *)v;
558 struct lcp *lcp = &dl->physical->link.lcp;
559
560 if (fp->proto == PROTO_LCP) {
561 datalink_GotAuthname(dl, "");
562 lcp->auth_ineed = lcp->want_auth;
563 lcp->auth_iwait = lcp->his_auth;
564 if (lcp->his_auth || lcp->want_auth) {
565 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
566 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
567 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
568 Auth2Nam(lcp->his_auth, lcp->his_authtype),
569 Auth2Nam(lcp->want_auth, lcp->want_authtype));
570 if (lcp->his_auth == PROTO_PAP)
571 auth_StartReq(&dl->pap);
572 if (lcp->want_auth == PROTO_CHAP)
573 auth_StartReq(&dl->chap.auth);
574 } else
575 datalink_AuthOk(dl);
576 } else if (fp->proto == PROTO_CCP)
577 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
578}
579
580static void
581datalink_AuthReInit(struct datalink *dl)
582{
583 auth_StopTimer(&dl->pap);
584 auth_StopTimer(&dl->chap.auth);
585 chap_ReInit(&dl->chap);
586}
587
588void
589datalink_GotAuthname(struct datalink *dl, const char *name)
590{
591 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
592 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
593}
594
595void
596datalink_NCPUp(struct datalink *dl)
597{
598 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
599
600 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
601 /* we've authenticated in multilink mode ! */
602 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
603 case MP_LINKSENT:
604 /* We've handed the link off to another ppp (well, we will soon) ! */
605 return;
606 case MP_UP:
607 /* First link in the bundle */
608 auth_Select(dl->bundle, dl->peer.authname);
609 bundle_CalculateBandwidth(dl->bundle);
610 /* fall through */
611 case MP_ADDED:
612 /* We're in multilink mode ! */
613 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
614 bundle_CalculateBandwidth(dl->bundle);
615 break;
616 case MP_FAILED:
617 datalink_AuthNotOk(dl);
618 return;
619 }
620 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
621 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
622 datalink_NewState(dl, DATALINK_OPEN);
623 bundle_CalculateBandwidth(dl->bundle);
624 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
625 return;
626 } else {
627 dl->bundle->ncp.mp.peer = dl->peer;
628 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
629 auth_Select(dl->bundle, dl->peer.authname);
630 }
631
632 if (ccpok) {
633 fsm_Up(&dl->physical->link.ccp.fsm);
634 fsm_Open(&dl->physical->link.ccp.fsm);
635 }
636 datalink_NewState(dl, DATALINK_OPEN);
637 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
638 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
639}
640
641void
642datalink_CBCPComplete(struct datalink *dl)
643{
644 datalink_NewState(dl, DATALINK_LCP);
645 datalink_AuthReInit(dl);
646 fsm_Close(&dl->physical->link.lcp.fsm);
647}
648
649void
650datalink_CBCPFailed(struct datalink *dl)
651{
652 cbcp_Down(&dl->cbcp);
653 datalink_CBCPComplete(dl);
654}
655
656void
657datalink_AuthOk(struct datalink *dl)
658{
659 if ((dl->physical->link.lcp.his_callback.opmask &
660 CALLBACK_BIT(CALLBACK_CBCP) ||
661 dl->physical->link.lcp.want_callback.opmask &
662 CALLBACK_BIT(CALLBACK_CBCP)) &&
663 !(dl->physical->link.lcp.want_callback.opmask &
664 CALLBACK_BIT(CALLBACK_AUTH))) {
665 /* We must have agreed CBCP if AUTH isn't there any more */
666 datalink_NewState(dl, DATALINK_CBCP);
667 cbcp_Up(&dl->cbcp);
668 } else if (dl->physical->link.lcp.want_callback.opmask) {
669 /* It's not CBCP */
670 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
671 datalink_NewState(dl, DATALINK_LCP);
672 datalink_AuthReInit(dl);
673 fsm_Close(&dl->physical->link.lcp.fsm);
674 } else
675 switch (dl->physical->link.lcp.his_callback.opmask) {
676 case 0:
677 datalink_NCPUp(dl);
678 break;
679
680 case CALLBACK_BIT(CALLBACK_AUTH):
681 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
682 sizeof dl->cbcp.fsm.phone);
683 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
684 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
685 dl->peer.authname);
686 *dl->cbcp.fsm.phone = '\0';
687 } else {
688 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
689 if (ptr)
690 *ptr = '\0'; /* Call back on the first number */
691 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
692 dl->cbcp.fsm.phone);
693 dl->cbcp.required = 1;
694 }
695 dl->cbcp.fsm.delay = 0;
696 datalink_NewState(dl, DATALINK_LCP);
697 datalink_AuthReInit(dl);
698 fsm_Close(&dl->physical->link.lcp.fsm);
699 break;
700
701 case CALLBACK_BIT(CALLBACK_E164):
702 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
703 sizeof dl->cbcp.fsm.phone - 1);
704 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
705 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
706 dl->cbcp.fsm.phone);
707 dl->cbcp.required = 1;
708 dl->cbcp.fsm.delay = 0;
709 datalink_NewState(dl, DATALINK_LCP);
710 datalink_AuthReInit(dl);
711 fsm_Close(&dl->physical->link.lcp.fsm);
712 break;
713
714 default:
715 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
716 dl->name);
717 datalink_NewState(dl, DATALINK_LCP);
718 datalink_AuthReInit(dl);
719 fsm_Close(&dl->physical->link.lcp.fsm);
720 break;
721 }
722}
723
724void
725datalink_AuthNotOk(struct datalink *dl)
726{
727 datalink_NewState(dl, DATALINK_LCP);
728 datalink_AuthReInit(dl);
729 fsm_Close(&dl->physical->link.lcp.fsm);
730}
731
732static void
733datalink_LayerDown(void *v, struct fsm *fp)
734{
735 /* The given FSM has been told to come down */
736 struct datalink *dl = (struct datalink *)v;
737
738 if (fp->proto == PROTO_LCP) {
739 switch (dl->state) {
740 case DATALINK_OPEN:
741 peerid_Init(&dl->peer);
742 fsm2initial(&dl->physical->link.ccp.fsm);
743 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
744 (*dl->parent->LayerDown)(dl->parent->object, fp);
745 /* fall through (just in case) */
746
747 case DATALINK_CBCP:
748 if (!dl->cbcp.required)
749 cbcp_Down(&dl->cbcp);
750 /* fall through (just in case) */
751
752 case DATALINK_AUTH:
753 timer_Stop(&dl->pap.authtimer);
754 timer_Stop(&dl->chap.auth.authtimer);
755 }
756 datalink_NewState(dl, DATALINK_LCP);
757 datalink_AuthReInit(dl);
758 }
759}
760
761static void
762datalink_LayerFinish(void *v, struct fsm *fp)
763{
764 /* The given fsm is now down */
765 struct datalink *dl = (struct datalink *)v;
766
767 if (fp->proto == PROTO_LCP) {
768 fsm2initial(fp);
769 (*dl->parent->LayerFinish)(dl->parent->object, fp);
770 datalink_ComeDown(dl, CLOSE_NORMAL);
771 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
772 fsm_Open(fp); /* CCP goes to ST_STOPPED */
773}
774
775struct datalink *
776datalink_Create(const char *name, struct bundle *bundle, int type)
777{
778 struct datalink *dl;
779
780 dl = (struct datalink *)malloc(sizeof(struct datalink));
781 if (dl == NULL)
782 return dl;
783
784 dl->desc.type = DATALINK_DESCRIPTOR;
785 dl->desc.UpdateSet = datalink_UpdateSet;
786 dl->desc.IsSet = datalink_IsSet;
787 dl->desc.Read = datalink_Read;
788 dl->desc.Write = datalink_Write;
789
790 dl->state = DATALINK_CLOSED;
791
792 *dl->cfg.script.dial = '\0';
793 *dl->cfg.script.login = '\0';
794 *dl->cfg.script.logout = '\0';
795 *dl->cfg.script.hangup = '\0';
796 *dl->cfg.phone.list = '\0';
797 *dl->phone.list = '\0';
798 dl->phone.next = NULL;
799 dl->phone.alt = NULL;
800 dl->phone.chosen = "N/A";
801 dl->stayonline = 0;
802 dl->script.run = 1;
803 dl->script.packetmode = 1;
804 mp_linkInit(&dl->mp);
805
806 dl->bundle = bundle;
807 dl->next = NULL;
808
809 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
810
811 dl->dial.tries = 0;
812 dl->cfg.dial.max = 1;
813 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
814 dl->cfg.dial.timeout = DIAL_TIMEOUT;
815 dl->cfg.dial.inc = 0;
816 dl->cfg.dial.maxinc = 10;
817
818 dl->reconnect_tries = 0;
819 dl->cfg.reconnect.max = 0;
820 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
821
822 dl->cfg.callback.opmask = 0;
823 dl->cfg.cbcp.delay = 0;
824 *dl->cfg.cbcp.phone = '\0';
825 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
826
827 dl->name = strdup(name);
828 peerid_Init(&dl->peer);
829 dl->parent = &bundle->fsm;
830 dl->fsmp.LayerStart = datalink_LayerStart;
831 dl->fsmp.LayerUp = datalink_LayerUp;
832 dl->fsmp.LayerDown = datalink_LayerDown;
833 dl->fsmp.LayerFinish = datalink_LayerFinish;
834 dl->fsmp.object = dl;
835
836 if ((dl->physical = physical_Create(dl, type)) == NULL) {
837 free(dl->name);
838 free(dl);
839 return NULL;
840 }
841
842 pap_Init(&dl->pap, dl->physical);
843 chap_Init(&dl->chap, dl->physical);
844 cbcp_Init(&dl->cbcp, dl->physical);
845
846 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
847 chat_Init(&dl->chat, dl->physical);
848
849 log_Printf(LogPHASE, "%s: Created in %s state\n",
850 dl->name, datalink_State(dl));
851
852 return dl;
853}
854
855struct datalink *
856datalink_Clone(struct datalink *odl, const char *name)
857{
858 struct datalink *dl;
859
860 dl = (struct datalink *)malloc(sizeof(struct datalink));
861 if (dl == NULL)
862 return dl;
863
864 dl->desc.type = DATALINK_DESCRIPTOR;
865 dl->desc.UpdateSet = datalink_UpdateSet;
866 dl->desc.IsSet = datalink_IsSet;
867 dl->desc.Read = datalink_Read;
868 dl->desc.Write = datalink_Write;
869
870 dl->state = DATALINK_CLOSED;
871
872 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
873 mp_linkInit(&dl->mp);
874 *dl->phone.list = '\0';
875 dl->phone.next = NULL;
876 dl->phone.alt = NULL;
877 dl->phone.chosen = "N/A";
878 dl->bundle = odl->bundle;
879 dl->next = NULL;
880 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
881 dl->dial.tries = 0;
882 dl->reconnect_tries = 0;
883 dl->name = strdup(name);
884 peerid_Init(&dl->peer);
885 dl->parent = odl->parent;
886 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
887 dl->fsmp.object = dl;
888
889 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
890 free(dl->name);
891 free(dl);
892 return NULL;
893 }
894 pap_Init(&dl->pap, dl->physical);
895 dl->pap.cfg = odl->pap.cfg;
896
897 chap_Init(&dl->chap, dl->physical);
898 dl->chap.auth.cfg = odl->chap.auth.cfg;
899
900 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
901 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
902 sizeof dl->physical->link.lcp.cfg);
903 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
904 sizeof dl->physical->link.ccp.cfg);
905 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
906 sizeof dl->physical->async.cfg);
907
908 cbcp_Init(&dl->cbcp, dl->physical);
909
910 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
911 chat_Init(&dl->chat, dl->physical);
912
913 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
914 dl->name, datalink_State(dl));
915
916 return dl;
917}
918
919struct datalink *
920datalink_Destroy(struct datalink *dl)
921{
922 struct datalink *result;
923
924 if (dl->state != DATALINK_CLOSED) {
925 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
926 datalink_State(dl));
927 switch (dl->state) {
928 case DATALINK_HANGUP:
929 case DATALINK_DIAL:
930 case DATALINK_LOGIN:
931 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
932 break;
933 }
934 }
935
936 chat_Destroy(&dl->chat);
937 timer_Stop(&dl->dial.timer);
938 result = dl->next;
939 physical_Destroy(dl->physical);
940 free(dl->name);
941 free(dl);
942
943 return result;
944}
945
946void
947datalink_Up(struct datalink *dl, int runscripts, int packetmode)
948{
949 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
950 /* Ignore scripts */
951 runscripts = 0;
952
953 switch (dl->state) {
954 case DATALINK_CLOSED:
955 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
956 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
957 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
958 datalink_NewState(dl, DATALINK_OPENING);
959 dl->reconnect_tries =
960 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
961 dl->dial.tries = dl->cfg.dial.max;
962 dl->script.run = runscripts;
963 dl->script.packetmode = packetmode;
964 break;
965
966 case DATALINK_OPENING:
967 if (!dl->script.run && runscripts)
968 dl->script.run = 1;
969 /* fall through */
970
971 case DATALINK_DIAL:
972 case DATALINK_LOGIN:
973 case DATALINK_READY:
974 if (!dl->script.packetmode && packetmode) {
975 dl->script.packetmode = 1;
976 if (dl->state == DATALINK_READY) {
977 dl->script.run = 0;
978 datalink_NewState(dl, DATALINK_CARRIER);
979 }
980 }
981 break;
982 }
983}
984
985void
986datalink_Close(struct datalink *dl, int how)
987{
988 /* Please close */
989 switch (dl->state) {
990 case DATALINK_OPEN:
991 peerid_Init(&dl->peer);
992 fsm2initial(&dl->physical->link.ccp.fsm);
993 /* fall through */
994
995 case DATALINK_CBCP:
996 case DATALINK_AUTH:
997 case DATALINK_LCP:
998 datalink_AuthReInit(dl);
999 if (how == CLOSE_LCP)
1000 datalink_DontHangup(dl);
1001 else if (how == CLOSE_STAYDOWN)
1002 datalink_StayDown(dl);
1003 fsm_Close(&dl->physical->link.lcp.fsm);
1004 break;
1005
1006 default:
1007 datalink_ComeDown(dl, how);
1008 }
1009}
1010
1011void
1012datalink_Down(struct datalink *dl, int how)
1013{
1014 /* Carrier is lost */
1015 switch (dl->state) {
1016 case DATALINK_OPEN:
1017 peerid_Init(&dl->peer);
1018 fsm2initial(&dl->physical->link.ccp.fsm);
1019 /* fall through */
1020
1021 case DATALINK_CBCP:
1022 case DATALINK_AUTH:
1023 case DATALINK_LCP:
1024 fsm2initial(&dl->physical->link.lcp.fsm);
1025 if (dl->state == DATALINK_OPENING)
1026 return; /* we're doing a callback... */
1027 /* fall through */
1028
1029 default:
1030 datalink_ComeDown(dl, how);
1031 }
1032}
1033
1034void
1035datalink_StayDown(struct datalink *dl)
1036{
1037 dl->dial.tries = -1;
1038 dl->reconnect_tries = 0;
1039 dl->stayonline = 0;
1040}
1041
1042void
1043datalink_DontHangup(struct datalink *dl)
1044{
1045 dl->dial.tries = -1;
1046 dl->reconnect_tries = 0;
1047 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
1048}
1049
1050int
1051datalink_Show(struct cmdargs const *arg)
1052{
1053 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1054 prompt_Printf(arg->prompt, " State: %s\n",
1055 datalink_State(arg->cx));
1056 prompt_Printf(arg->prompt, " Peer name: ");
1057 if (*arg->cx->peer.authname)
1058 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1059 else if (arg->cx->state == DATALINK_OPEN)
1060 prompt_Printf(arg->prompt, "None requested\n");
1061 else
1062 prompt_Printf(arg->prompt, "N/A\n");
1063 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1064 mp_Enddisc(arg->cx->peer.enddisc.class,
1065 arg->cx->peer.enddisc.address,
1066 arg->cx->peer.enddisc.len));
1067
1068 prompt_Printf(arg->prompt, "\nDefaults:\n");
1069 prompt_Printf(arg->prompt, " Phone List: %s\n",
1070 arg->cx->cfg.phone.list);
1071 if (arg->cx->cfg.dial.max)
1072 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1073 arg->cx->cfg.dial.max);
1074 else
1075 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1076 if (arg->cx->cfg.dial.next_timeout >= 0)
1077 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1078 else
1079 prompt_Printf(arg->prompt, "random/");
1080 if (arg->cx->cfg.dial.timeout >= 0)
1081 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1082 else
1083 prompt_Printf(arg->prompt, "random\n");
1084 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1085 arg->cx->cfg.reconnect.max);
1086 if (arg->cx->cfg.reconnect.timeout > 0)
1087 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1088 else
1089 prompt_Printf(arg->prompt, "random\n");
1090 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1091 PHYS_DIRECT ? "accepted: " : "requested:");
1092 if (!arg->cx->cfg.callback.opmask)
1093 prompt_Printf(arg->prompt, "none\n");
1094 else {
1095 int comma = 0;
1096
1097 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1098 prompt_Printf(arg->prompt, "none");
1099 comma = 1;
1100 }
1101 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1102 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1103 comma = 1;
1104 }
1105 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1106 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1107 if (arg->cx->physical->type != PHYS_DIRECT)
1108 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1109 comma = 1;
1110 }
1111 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1112 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1113 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1114 arg->cx->cfg.cbcp.delay);
1115 prompt_Printf(arg->prompt, " phone: ");
1116 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1117 if (arg->cx->physical->type & PHYS_DIRECT)
1118 prompt_Printf(arg->prompt, "Caller decides\n");
1119 else
1120 prompt_Printf(arg->prompt, "Dialback server decides\n");
1121 } else
1122 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1123 prompt_Printf(arg->prompt, " timeout: %lds\n",
1124 arg->cx->cfg.cbcp.fsmretry);
1125 } else
1126 prompt_Printf(arg->prompt, "\n");
1127 }
1128
1129 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1130 arg->cx->cfg.script.dial);
1131 prompt_Printf(arg->prompt, " Login Script: %s\n",
1132 arg->cx->cfg.script.login);
1133 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1134 arg->cx->cfg.script.logout);
1135 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1136 arg->cx->cfg.script.hangup);
1137 return 0;
1138}
1139
1140int
1141datalink_SetReconnect(struct cmdargs const *arg)
1142{
1143 if (arg->argc == arg->argn+2) {
1144 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1145 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1146 return 0;
1147 }
1148 return -1;
1149}
1150
1151int
1152datalink_SetRedial(struct cmdargs const *arg)
1153{
1154 const char *sep, *osep;
1155 int timeout, inc, maxinc, tries;
1156
1157 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1158 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1159 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1160 arg->cx->cfg.dial.timeout = -1;
1161 randinit();
1162 } else {
1163 timeout = atoi(arg->argv[arg->argn]);
1164
1165 if (timeout >= 0)
1166 arg->cx->cfg.dial.timeout = timeout;
1167 else {
1168 log_Printf(LogWARN, "Invalid redial timeout\n");
1169 return -1;
1170 }
1171 }
1172
1173 sep = strchr(arg->argv[arg->argn], '+');
1174 if (sep) {
1175 inc = atoi(++sep);
1176 osep = sep;
1177 if (inc >= 0)
1178 arg->cx->cfg.dial.inc = inc;
1179 else {
1180 log_Printf(LogWARN, "Invalid timeout increment\n");
1181 return -1;
1182 }
1183 sep = strchr(sep, '-');
1184 if (sep) {
1185 maxinc = atoi(++sep);
1186 if (maxinc >= 0)
1187 arg->cx->cfg.dial.maxinc = maxinc;
1188 else {
1189 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1190 return -1;
1191 }
1192 } else {
1193 /* Default timeout increment */
1194 arg->cx->cfg.dial.maxinc = 10;
1195 sep = osep;
1196 }
1197 } else {
1198 /* Default timeout increment & max increment */
1199 arg->cx->cfg.dial.inc = 0;
1200 arg->cx->cfg.dial.maxinc = 10;
1201 sep = arg->argv[arg->argn];
1202 }
1203
1204 sep = strchr(sep, '.');
1205 if (sep) {
1206 if (strcasecmp(++sep, "random") == 0) {
1207 arg->cx->cfg.dial.next_timeout = -1;
1208 randinit();
1209 } else {
1210 timeout = atoi(sep);
1211 if (timeout >= 0)
1212 arg->cx->cfg.dial.next_timeout = timeout;
1213 else {
1214 log_Printf(LogWARN, "Invalid next redial timeout\n");
1215 return -1;
1216 }
1217 }
1218 } else
1219 /* Default next timeout */
1220 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1221
1222 if (arg->argc == arg->argn+2) {
1223 tries = atoi(arg->argv[arg->argn+1]);
1224
1225 if (tries >= 0) {
1226 arg->cx->cfg.dial.max = tries;
1227 } else {
1228 log_Printf(LogWARN, "Invalid retry value\n");
1229 return 1;
1230 }
1231 }
1232 return 0;
1233 }
1234
1235 return -1;
1236}
1237
1238static const char * const states[] = {
1239 "closed",
1240 "opening",
1241 "hangup",
1242 "dial",
1243 "carrier",
1244 "logout",
1245 "login",
1246 "ready",
1247 "lcp",
1248 "auth",
1249 "cbcp",
1250 "open"
1251};
1252
1253const char *
1254datalink_State(struct datalink *dl)
1255{
1256 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
1257 return "unknown";
1258 return states[dl->state];
1259}
1260
1261static void
1262datalink_NewState(struct datalink *dl, int state)
1263{
1264 if (state != dl->state) {
1265 if (state >= 0 && state < sizeof states / sizeof states[0]) {
1266 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1267 states[state]);
1268 dl->state = state;
1269 } else
1270 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1271 }
1272}
1273
1274struct datalink *
1275iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1276 int fd, int *auxfd, int *nauxfd)
1277{
1278 struct datalink *dl, *cdl;
1279 struct fsm_retry copy;
1280 char *oname;
1281
1282 dl = (struct datalink *)iov[(*niov)++].iov_base;
1283 dl->name = iov[*niov].iov_base;
1284
1285 if (dl->name[DATALINK_MAXNAME-1]) {
1286 dl->name[DATALINK_MAXNAME-1] = '\0';
1287 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1288 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1289 }
1290
1291 /* Make sure the name is unique ! */
1292 oname = NULL;
1293 do {
1294 for (cdl = bundle->links; cdl; cdl = cdl->next)
1295 if (!strcasecmp(dl->name, cdl->name)) {
1296 if (oname)
1297 free(datalink_NextName(dl));
1298 else
1299 oname = datalink_NextName(dl);
1300 break; /* Keep renaming 'till we have no conflicts */
1301 }
1302 } while (cdl);
1303
1304 if (oname) {
1305 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1306 free(oname);
1307 } else {
1308 dl->name = strdup(dl->name);
1309 free(iov[*niov].iov_base);
1310 }
1311 (*niov)++;
1312
1313 dl->desc.type = DATALINK_DESCRIPTOR;
1314 dl->desc.UpdateSet = datalink_UpdateSet;
1315 dl->desc.IsSet = datalink_IsSet;
1316 dl->desc.Read = datalink_Read;
1317 dl->desc.Write = datalink_Write;
1318
1319 mp_linkInit(&dl->mp);
1320 *dl->phone.list = '\0';
1321 dl->phone.next = NULL;
1322 dl->phone.alt = NULL;
1323 dl->phone.chosen = "N/A";
1324
1325 dl->bundle = bundle;
1326 dl->next = NULL;
1327 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1328 dl->dial.tries = 0;
1329 dl->reconnect_tries = 0;
1330 dl->parent = &bundle->fsm;
1331 dl->fsmp.LayerStart = datalink_LayerStart;
1332 dl->fsmp.LayerUp = datalink_LayerUp;
1333 dl->fsmp.LayerDown = datalink_LayerDown;
1334 dl->fsmp.LayerFinish = datalink_LayerFinish;
1335 dl->fsmp.object = dl;
1336
1337 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1338
1339 if (!dl->physical) {
1340 free(dl->name);
1341 free(dl);
1342 dl = NULL;
1343 } else {
1344 copy = dl->pap.cfg.fsm;
1345 pap_Init(&dl->pap, dl->physical);
1346 dl->pap.cfg.fsm = copy;
1347
1348 copy = dl->chap.auth.cfg.fsm;
1349 chap_Init(&dl->chap, dl->physical);
1350 dl->chap.auth.cfg.fsm = copy;
1351
1352 cbcp_Init(&dl->cbcp, dl->physical);
1353
1354 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1355 chat_Init(&dl->chat, dl->physical);
1356
1357 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1358 dl->name, datalink_State(dl));
1359 }
1360
1361 return dl;
1362}
1363
1364int
1365datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1366 int *auxfd, int *nauxfd)
1367{
1368 /* If `dl' is NULL, we're allocating before a Fromiov() */
1369 int link_fd;
1370
1371 if (dl) {
1372 timer_Stop(&dl->dial.timer);
1373 /* The following is purely for the sake of paranoia */
1374 cbcp_Down(&dl->cbcp);
1375 timer_Stop(&dl->pap.authtimer);
1376 timer_Stop(&dl->chap.auth.authtimer);
1377 }
1378
1379 if (*niov >= maxiov - 1) {
1380 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1381 if (dl) {
1382 free(dl->name);
1383 free(dl);
1384 }
1385 return -1;
1386 }
1387
1388 iov[*niov].iov_base = (void *)dl;
1389 iov[(*niov)++].iov_len = sizeof *dl;
1390 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1391 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1392
1393 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1394 nauxfd);
1395
1396 if (link_fd == -1 && dl) {
1397 free(dl->name);
1398 free(dl);
1399 }
1400
1401 return link_fd;
1402}
1403
1404void
1405datalink_Rename(struct datalink *dl, const char *name)
1406{
1407 free(dl->name);
1408 dl->physical->link.name = dl->name = strdup(name);
1409}
1410
1411char *
1412datalink_NextName(struct datalink *dl)
1413{
1414 int f, n;
1415 char *name, *oname;
1416
1417 n = strlen(dl->name);
1418 name = (char *)malloc(n+3);
1419 for (f = n - 1; f >= 0; f--)
1420 if (!isdigit(dl->name[f]))
1421 break;
1422 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1423 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1424 oname = dl->name;
1425 dl->name = name;
1426 /* our physical link name isn't updated (it probably isn't created yet) */
1427 return oname;
1428}
1429
1430int
1431datalink_SetMode(struct datalink *dl, int mode)
1432{
1433 if (!physical_SetMode(dl->physical, mode))
1434 return 0;
1435 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1436 dl->script.run = 0;
1437 if (dl->physical->type == PHYS_DIRECT)
1438 dl->reconnect_tries = 0;
1439 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1440 dl->state <= DATALINK_READY)
1441 datalink_Up(dl, 1, 1);
1442 return 1;
1443}
1444
1445int
1446datalink_GetDialTimeout(struct datalink *dl)
1447{
1448 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1449
1450 if (dl->dial.incs < dl->cfg.dial.maxinc)
1451 dl->dial.incs++;
1452
1453 return result;
1454}