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: src/usr.sbin/ppp/datalink.c,v 1.57.2.11 2002/09/01 02:12:26 brian Exp $
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 <stdarg.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <sys/uio.h>
42 #include <termios.h>
43
44 #include "layer.h"
45 #include "mbuf.h"
46 #include "log.h"
47 #include "defs.h"
48 #include "timer.h"
49 #include "fsm.h"
50 #include "descriptor.h"
51 #include "lqr.h"
52 #include "hdlc.h"
53 #include "lcp.h"
54 #include "async.h"
55 #include "throughput.h"
56 #include "ccp.h"
57 #include "link.h"
58 #include "physical.h"
59 #include "iplist.h"
60 #include "slcompress.h"
61 #include "ncpaddr.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
81 static void datalink_LoginDone(struct datalink *);
82 static void datalink_NewState(struct datalink *, unsigned);
83
84 static void
datalink_OpenTimeout(void * v)85 datalink_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
94 static int
datalink_StartDialTimer(struct datalink * dl,int Timeout)95 datalink_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
113 static void
datalink_HangupDone(struct datalink * dl)114 datalink_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
187 const char *
datalink_ChoosePhoneNumber(struct datalink * dl)188 datalink_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
209 static void
datalink_LoginDone(struct datalink * dl)210 datalink_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
249 static int
datalink_UpdateSet(struct fdescriptor * d,fd_set * r,fd_set * w,fd_set * e,int * n)250 datalink_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 /* FALLTHROUGH */
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) >= 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
413 int
datalink_RemoveFromSet(struct datalink * dl,fd_set * r,fd_set * w,fd_set * e)414 datalink_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
419 static int
datalink_IsSet(struct fdescriptor * d,const fd_set * fdset)420 datalink_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
446 static void
datalink_Read(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)447 datalink_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
476 static int
datalink_Write(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)477 datalink_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 if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) {
493 datalink_ComeDown(dl, CLOSE_NORMAL);
494 result = 0;
495 }
496 break;
497
498 case DATALINK_READY:
499 case DATALINK_LCP:
500 case DATALINK_AUTH:
501 case DATALINK_CBCP:
502 case DATALINK_OPEN:
503 if (descriptor_IsSet(&dl->chap.desc, fdset))
504 switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) {
505 case -1:
506 datalink_ComeDown(dl, CLOSE_NORMAL);
507 break;
508 case 1:
509 result++;
510 }
511 if (descriptor_IsSet(&dl->physical->desc, fdset))
512 switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) {
513 case -1:
514 datalink_ComeDown(dl, CLOSE_NORMAL);
515 break;
516 case 1:
517 result++;
518 }
519 break;
520 }
521
522 return result;
523 }
524
525 void
datalink_ComeDown(struct datalink * dl,int how)526 datalink_ComeDown(struct datalink *dl, int how)
527 {
528 int stayonline;
529
530 if (how == CLOSE_LCP)
531 datalink_DontHangup(dl);
532 else if (how == CLOSE_STAYDOWN)
533 datalink_StayDown(dl);
534
535 stayonline = dl->stayonline;
536 dl->stayonline = 0;
537
538 if (dl->state >= DATALINK_READY && stayonline) {
539 physical_StopDeviceTimer(dl->physical);
540 datalink_NewState(dl, DATALINK_READY);
541 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
542 physical_Offline(dl->physical);
543 if (dl->script.run && dl->state != DATALINK_OPENING) {
544 if (dl->state == DATALINK_LOGOUT) {
545 datalink_NewState(dl, DATALINK_HANGUP);
546 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
547 log_Printf(LogWARN, "Invalid hangup script\n");
548 } else {
549 datalink_NewState(dl, DATALINK_LOGOUT);
550 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
551 log_Printf(LogWARN, "Invalid logout script\n");
552 }
553 } else
554 datalink_HangupDone(dl);
555 }
556 }
557
558 static void
datalink_LayerStart(void * v,struct fsm * fp)559 datalink_LayerStart(void *v, struct fsm *fp)
560 {
561 /* The given FSM is about to start up ! */
562 struct datalink *dl = (struct datalink *)v;
563
564 if (fp->proto == PROTO_LCP)
565 (*dl->parent->LayerStart)(dl->parent->object, fp);
566 }
567
568 static void
datalink_LayerUp(void * v,struct fsm * fp)569 datalink_LayerUp(void *v, struct fsm *fp)
570 {
571 /* The given fsm is now up */
572 struct datalink *dl = (struct datalink *)v;
573 struct lcp *lcp = &dl->physical->link.lcp;
574
575 if (fp->proto == PROTO_LCP) {
576 datalink_GotAuthname(dl, "");
577 lcp->auth_ineed = lcp->want_auth;
578 lcp->auth_iwait = lcp->his_auth;
579 if (lcp->his_auth || lcp->want_auth) {
580 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
581 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
582 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
583 Auth2Nam(lcp->his_auth, lcp->his_authtype),
584 Auth2Nam(lcp->want_auth, lcp->want_authtype));
585 if (lcp->his_auth == PROTO_PAP)
586 auth_StartReq(&dl->pap);
587 if (lcp->want_auth == PROTO_CHAP)
588 auth_StartReq(&dl->chap.auth);
589 } else
590 datalink_AuthOk(dl);
591 } else if (fp->proto == PROTO_CCP)
592 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
593 }
594
595 static void
datalink_AuthReInit(struct datalink * dl)596 datalink_AuthReInit(struct datalink *dl)
597 {
598 auth_StopTimer(&dl->pap);
599 auth_StopTimer(&dl->chap.auth);
600 chap_ReInit(&dl->chap);
601 }
602
603 void
datalink_GotAuthname(struct datalink * dl,const char * name)604 datalink_GotAuthname(struct datalink *dl, const char *name)
605 {
606 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
607 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
608 }
609
610 void
datalink_NCPUp(struct datalink * dl)611 datalink_NCPUp(struct datalink *dl)
612 {
613 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
614
615 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
616 /* we've authenticated in multilink mode ! */
617 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
618 case MP_LINKSENT:
619 /* We've handed the link off to another ppp (well, we will soon) ! */
620 return;
621 case MP_UP:
622 /* First link in the bundle */
623 auth_Select(dl->bundle, dl->peer.authname);
624 bundle_CalculateBandwidth(dl->bundle);
625 /* FALLTHROUGH */
626 case MP_ADDED:
627 /* We're in multilink mode ! */
628 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
629 bundle_CalculateBandwidth(dl->bundle);
630 break;
631 case MP_FAILED:
632 datalink_AuthNotOk(dl);
633 return;
634 }
635 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
636 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
637 datalink_NewState(dl, DATALINK_OPEN);
638 bundle_CalculateBandwidth(dl->bundle);
639 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
640 return;
641 } else {
642 dl->bundle->ncp.mp.peer = dl->peer;
643 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
644 auth_Select(dl->bundle, dl->peer.authname);
645 }
646
647 if (ccpok) {
648 fsm_Up(&dl->physical->link.ccp.fsm);
649 fsm_Open(&dl->physical->link.ccp.fsm);
650 }
651 datalink_NewState(dl, DATALINK_OPEN);
652 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
653 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
654 }
655
656 void
datalink_CBCPComplete(struct datalink * dl)657 datalink_CBCPComplete(struct datalink *dl)
658 {
659 datalink_NewState(dl, DATALINK_LCP);
660 datalink_AuthReInit(dl);
661 fsm_Close(&dl->physical->link.lcp.fsm);
662 }
663
664 void
datalink_CBCPFailed(struct datalink * dl)665 datalink_CBCPFailed(struct datalink *dl)
666 {
667 cbcp_Down(&dl->cbcp);
668 datalink_CBCPComplete(dl);
669 }
670
671 void
datalink_AuthOk(struct datalink * dl)672 datalink_AuthOk(struct datalink *dl)
673 {
674 if ((dl->physical->link.lcp.his_callback.opmask &
675 CALLBACK_BIT(CALLBACK_CBCP) ||
676 dl->physical->link.lcp.want_callback.opmask &
677 CALLBACK_BIT(CALLBACK_CBCP)) &&
678 !(dl->physical->link.lcp.want_callback.opmask &
679 CALLBACK_BIT(CALLBACK_AUTH))) {
680 /* We must have agreed CBCP if AUTH isn't there any more */
681 datalink_NewState(dl, DATALINK_CBCP);
682 cbcp_Up(&dl->cbcp);
683 } else if (dl->physical->link.lcp.want_callback.opmask) {
684 /* It's not CBCP */
685 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
686 datalink_NewState(dl, DATALINK_LCP);
687 datalink_AuthReInit(dl);
688 fsm_Close(&dl->physical->link.lcp.fsm);
689 } else
690 switch (dl->physical->link.lcp.his_callback.opmask) {
691 case 0:
692 datalink_NCPUp(dl);
693 break;
694
695 case CALLBACK_BIT(CALLBACK_AUTH):
696 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
697 sizeof dl->cbcp.fsm.phone);
698 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
699 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
700 dl->peer.authname);
701 *dl->cbcp.fsm.phone = '\0';
702 } else {
703 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
704 if (ptr)
705 *ptr = '\0'; /* Call back on the first number */
706 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
707 dl->cbcp.fsm.phone);
708 dl->cbcp.required = 1;
709 }
710 dl->cbcp.fsm.delay = 0;
711 datalink_NewState(dl, DATALINK_LCP);
712 datalink_AuthReInit(dl);
713 fsm_Close(&dl->physical->link.lcp.fsm);
714 break;
715
716 case CALLBACK_BIT(CALLBACK_E164):
717 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
718 sizeof dl->cbcp.fsm.phone - 1);
719 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
720 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
721 dl->cbcp.fsm.phone);
722 dl->cbcp.required = 1;
723 dl->cbcp.fsm.delay = 0;
724 datalink_NewState(dl, DATALINK_LCP);
725 datalink_AuthReInit(dl);
726 fsm_Close(&dl->physical->link.lcp.fsm);
727 break;
728
729 default:
730 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
731 dl->name);
732 datalink_NewState(dl, DATALINK_LCP);
733 datalink_AuthReInit(dl);
734 fsm_Close(&dl->physical->link.lcp.fsm);
735 break;
736 }
737 }
738
739 void
datalink_AuthNotOk(struct datalink * dl)740 datalink_AuthNotOk(struct datalink *dl)
741 {
742 datalink_NewState(dl, DATALINK_LCP);
743 datalink_AuthReInit(dl);
744 fsm_Close(&dl->physical->link.lcp.fsm);
745 }
746
747 static void
datalink_LayerDown(void * v,struct fsm * fp)748 datalink_LayerDown(void *v, struct fsm *fp)
749 {
750 /* The given FSM has been told to come down */
751 struct datalink *dl = (struct datalink *)v;
752
753 if (fp->proto == PROTO_LCP) {
754 switch (dl->state) {
755 case DATALINK_OPEN:
756 peerid_Init(&dl->peer);
757 fsm2initial(&dl->physical->link.ccp.fsm);
758 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
759 (*dl->parent->LayerDown)(dl->parent->object, fp);
760 /* FALLTHROUGH */
761
762 case DATALINK_CBCP:
763 if (!dl->cbcp.required)
764 cbcp_Down(&dl->cbcp);
765 /* FALLTHROUGH */
766
767 case DATALINK_AUTH:
768 timer_Stop(&dl->pap.authtimer);
769 timer_Stop(&dl->chap.auth.authtimer);
770 }
771 datalink_NewState(dl, DATALINK_LCP);
772 datalink_AuthReInit(dl);
773 }
774 }
775
776 static void
datalink_LayerFinish(void * v,struct fsm * fp)777 datalink_LayerFinish(void *v, struct fsm *fp)
778 {
779 /* The given fsm is now down */
780 struct datalink *dl = (struct datalink *)v;
781
782 if (fp->proto == PROTO_LCP) {
783 fsm2initial(fp);
784 (*dl->parent->LayerFinish)(dl->parent->object, fp);
785 datalink_ComeDown(dl, CLOSE_NORMAL);
786 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
787 fsm_Open(fp); /* CCP goes to ST_STOPPED */
788 }
789
790 struct datalink *
datalink_Create(const char * name,struct bundle * bundle,int type)791 datalink_Create(const char *name, struct bundle *bundle, int type)
792 {
793 struct datalink *dl;
794
795 dl = (struct datalink *)malloc(sizeof(struct datalink));
796 if (dl == NULL)
797 return dl;
798
799 dl->desc.type = DATALINK_DESCRIPTOR;
800 dl->desc.UpdateSet = datalink_UpdateSet;
801 dl->desc.IsSet = datalink_IsSet;
802 dl->desc.Read = datalink_Read;
803 dl->desc.Write = datalink_Write;
804
805 dl->state = DATALINK_CLOSED;
806
807 *dl->cfg.script.dial = '\0';
808 *dl->cfg.script.login = '\0';
809 *dl->cfg.script.logout = '\0';
810 *dl->cfg.script.hangup = '\0';
811 *dl->cfg.phone.list = '\0';
812 *dl->phone.list = '\0';
813 dl->phone.next = NULL;
814 dl->phone.alt = NULL;
815 dl->phone.chosen = "N/A";
816 dl->stayonline = 0;
817 dl->script.run = 1;
818 dl->script.packetmode = 1;
819 mp_linkInit(&dl->mp);
820
821 dl->bundle = bundle;
822 dl->next = NULL;
823
824 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
825
826 dl->dial.tries = 0;
827 dl->cfg.dial.max = 1;
828 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
829 dl->cfg.dial.timeout = DIAL_TIMEOUT;
830 dl->cfg.dial.inc = 0;
831 dl->cfg.dial.maxinc = 10;
832
833 dl->reconnect_tries = 0;
834 dl->cfg.reconnect.max = 0;
835 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
836
837 dl->cfg.callback.opmask = 0;
838 dl->cfg.cbcp.delay = 0;
839 *dl->cfg.cbcp.phone = '\0';
840 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
841
842 dl->name = strdup(name);
843 peerid_Init(&dl->peer);
844 dl->parent = &bundle->fsm;
845 dl->fsmp.LayerStart = datalink_LayerStart;
846 dl->fsmp.LayerUp = datalink_LayerUp;
847 dl->fsmp.LayerDown = datalink_LayerDown;
848 dl->fsmp.LayerFinish = datalink_LayerFinish;
849 dl->fsmp.object = dl;
850
851 if ((dl->physical = physical_Create(dl, type)) == NULL) {
852 free(dl->name);
853 free(dl);
854 return NULL;
855 }
856
857 pap_Init(&dl->pap, dl->physical);
858 chap_Init(&dl->chap, dl->physical);
859 cbcp_Init(&dl->cbcp, dl->physical);
860
861 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
862 chat_Init(&dl->chat, dl->physical);
863
864 log_Printf(LogPHASE, "%s: Created in %s state\n",
865 dl->name, datalink_State(dl));
866
867 return dl;
868 }
869
870 struct datalink *
datalink_Clone(struct datalink * odl,const char * name)871 datalink_Clone(struct datalink *odl, const char *name)
872 {
873 struct datalink *dl;
874
875 dl = (struct datalink *)malloc(sizeof(struct datalink));
876 if (dl == NULL)
877 return dl;
878
879 dl->desc.type = DATALINK_DESCRIPTOR;
880 dl->desc.UpdateSet = datalink_UpdateSet;
881 dl->desc.IsSet = datalink_IsSet;
882 dl->desc.Read = datalink_Read;
883 dl->desc.Write = datalink_Write;
884
885 dl->state = DATALINK_CLOSED;
886
887 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
888 mp_linkInit(&dl->mp);
889 *dl->phone.list = '\0';
890 dl->phone.next = NULL;
891 dl->phone.alt = NULL;
892 dl->phone.chosen = "N/A";
893 dl->bundle = odl->bundle;
894 dl->next = NULL;
895 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
896 dl->dial.tries = 0;
897 dl->reconnect_tries = 0;
898 dl->name = strdup(name);
899 peerid_Init(&dl->peer);
900 dl->parent = odl->parent;
901 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
902 dl->fsmp.object = dl;
903
904 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
905 free(dl->name);
906 free(dl);
907 return NULL;
908 }
909 pap_Init(&dl->pap, dl->physical);
910 dl->pap.cfg = odl->pap.cfg;
911
912 chap_Init(&dl->chap, dl->physical);
913 dl->chap.auth.cfg = odl->chap.auth.cfg;
914
915 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
916 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
917 sizeof dl->physical->link.lcp.cfg);
918 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
919 sizeof dl->physical->link.ccp.cfg);
920 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
921 sizeof dl->physical->async.cfg);
922
923 cbcp_Init(&dl->cbcp, dl->physical);
924
925 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
926 chat_Init(&dl->chat, dl->physical);
927
928 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
929 dl->name, datalink_State(dl));
930
931 return dl;
932 }
933
934 struct datalink *
datalink_Destroy(struct datalink * dl)935 datalink_Destroy(struct datalink *dl)
936 {
937 struct datalink *result;
938
939 if (dl->state != DATALINK_CLOSED) {
940 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
941 datalink_State(dl));
942 switch (dl->state) {
943 case DATALINK_HANGUP:
944 case DATALINK_DIAL:
945 case DATALINK_LOGIN:
946 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
947 break;
948 }
949 }
950
951 chat_Destroy(&dl->chat);
952 timer_Stop(&dl->dial.timer);
953 result = dl->next;
954 physical_Destroy(dl->physical);
955 free(dl->name);
956 free(dl);
957
958 return result;
959 }
960
961 void
datalink_Up(struct datalink * dl,int runscripts,int packetmode)962 datalink_Up(struct datalink *dl, int runscripts, int packetmode)
963 {
964 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
965 /* Ignore scripts */
966 runscripts = 0;
967
968 switch (dl->state) {
969 case DATALINK_CLOSED:
970 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
971 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
972 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
973 datalink_NewState(dl, DATALINK_OPENING);
974 dl->reconnect_tries =
975 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
976 dl->dial.tries = dl->cfg.dial.max;
977 dl->script.run = runscripts;
978 dl->script.packetmode = packetmode;
979 break;
980
981 case DATALINK_OPENING:
982 if (!dl->script.run && runscripts)
983 dl->script.run = 1;
984 /* FALLTHROUGH */
985
986 case DATALINK_DIAL:
987 case DATALINK_LOGIN:
988 case DATALINK_READY:
989 if (!dl->script.packetmode && packetmode) {
990 dl->script.packetmode = 1;
991 if (dl->state == DATALINK_READY) {
992 dl->script.run = 0;
993 datalink_NewState(dl, DATALINK_CARRIER);
994 }
995 }
996 break;
997 }
998 }
999
1000 void
datalink_Close(struct datalink * dl,int how)1001 datalink_Close(struct datalink *dl, int how)
1002 {
1003 /* Please close */
1004 switch (dl->state) {
1005 case DATALINK_OPEN:
1006 peerid_Init(&dl->peer);
1007 fsm2initial(&dl->physical->link.ccp.fsm);
1008 /* FALLTHROUGH */
1009
1010 case DATALINK_CBCP:
1011 case DATALINK_AUTH:
1012 case DATALINK_LCP:
1013 datalink_AuthReInit(dl);
1014 if (how == CLOSE_LCP)
1015 datalink_DontHangup(dl);
1016 else if (how == CLOSE_STAYDOWN)
1017 datalink_StayDown(dl);
1018 fsm_Close(&dl->physical->link.lcp.fsm);
1019 break;
1020
1021 default:
1022 datalink_ComeDown(dl, how);
1023 }
1024 }
1025
1026 void
datalink_Down(struct datalink * dl,int how)1027 datalink_Down(struct datalink *dl, int how)
1028 {
1029 /* Carrier is lost */
1030 switch (dl->state) {
1031 case DATALINK_OPEN:
1032 peerid_Init(&dl->peer);
1033 fsm2initial(&dl->physical->link.ccp.fsm);
1034 /* FALLTHROUGH */
1035
1036 case DATALINK_CBCP:
1037 case DATALINK_AUTH:
1038 case DATALINK_LCP:
1039 fsm2initial(&dl->physical->link.lcp.fsm);
1040 if (dl->state == DATALINK_OPENING)
1041 return; /* we're doing a callback... */
1042 /* FALLTHROUGH */
1043
1044 default:
1045 datalink_ComeDown(dl, how);
1046 }
1047 }
1048
1049 void
datalink_StayDown(struct datalink * dl)1050 datalink_StayDown(struct datalink *dl)
1051 {
1052 dl->dial.tries = -1;
1053 dl->reconnect_tries = 0;
1054 dl->stayonline = 0;
1055 }
1056
1057 void
datalink_DontHangup(struct datalink * dl)1058 datalink_DontHangup(struct datalink *dl)
1059 {
1060 dl->dial.tries = -1;
1061 dl->reconnect_tries = 0;
1062 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
1063 }
1064
1065 int
datalink_Show(struct cmdargs const * arg)1066 datalink_Show(struct cmdargs const *arg)
1067 {
1068 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1069 prompt_Printf(arg->prompt, " State: %s\n",
1070 datalink_State(arg->cx));
1071 prompt_Printf(arg->prompt, " Peer name: ");
1072 if (*arg->cx->peer.authname)
1073 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1074 else if (arg->cx->state == DATALINK_OPEN)
1075 prompt_Printf(arg->prompt, "None requested\n");
1076 else
1077 prompt_Printf(arg->prompt, "N/A\n");
1078 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1079 mp_Enddisc(arg->cx->peer.enddisc.class,
1080 arg->cx->peer.enddisc.address,
1081 arg->cx->peer.enddisc.len));
1082
1083 prompt_Printf(arg->prompt, "\nDefaults:\n");
1084 prompt_Printf(arg->prompt, " Phone List: %s\n",
1085 arg->cx->cfg.phone.list);
1086 if (arg->cx->cfg.dial.max)
1087 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1088 arg->cx->cfg.dial.max);
1089 else
1090 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1091 if (arg->cx->cfg.dial.next_timeout >= 0)
1092 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1093 else
1094 prompt_Printf(arg->prompt, "random/");
1095 if (arg->cx->cfg.dial.timeout >= 0)
1096 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1097 else
1098 prompt_Printf(arg->prompt, "random\n");
1099 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1100 arg->cx->cfg.reconnect.max);
1101 if (arg->cx->cfg.reconnect.timeout > 0)
1102 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1103 else
1104 prompt_Printf(arg->prompt, "random\n");
1105 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1106 PHYS_DIRECT ? "accepted: " : "requested:");
1107 if (!arg->cx->cfg.callback.opmask)
1108 prompt_Printf(arg->prompt, "none\n");
1109 else {
1110 int comma = 0;
1111
1112 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1113 prompt_Printf(arg->prompt, "none");
1114 comma = 1;
1115 }
1116 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1117 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1118 comma = 1;
1119 }
1120 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1121 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1122 if (arg->cx->physical->type != PHYS_DIRECT)
1123 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1124 comma = 1;
1125 }
1126 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1127 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1128 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1129 arg->cx->cfg.cbcp.delay);
1130 prompt_Printf(arg->prompt, " phone: ");
1131 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1132 if (arg->cx->physical->type & PHYS_DIRECT)
1133 prompt_Printf(arg->prompt, "Caller decides\n");
1134 else
1135 prompt_Printf(arg->prompt, "Dialback server decides\n");
1136 } else
1137 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1138 prompt_Printf(arg->prompt, " timeout: %lds\n",
1139 arg->cx->cfg.cbcp.fsmretry);
1140 } else
1141 prompt_Printf(arg->prompt, "\n");
1142 }
1143
1144 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1145 arg->cx->cfg.script.dial);
1146 prompt_Printf(arg->prompt, " Login Script: %s\n",
1147 arg->cx->cfg.script.login);
1148 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1149 arg->cx->cfg.script.logout);
1150 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1151 arg->cx->cfg.script.hangup);
1152 return 0;
1153 }
1154
1155 int
datalink_SetReconnect(struct cmdargs const * arg)1156 datalink_SetReconnect(struct cmdargs const *arg)
1157 {
1158 if (arg->argc == arg->argn+2) {
1159 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1160 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1161 return 0;
1162 }
1163 return -1;
1164 }
1165
1166 int
datalink_SetRedial(struct cmdargs const * arg)1167 datalink_SetRedial(struct cmdargs const *arg)
1168 {
1169 const char *sep, *osep;
1170 int timeout, inc, maxinc, tries;
1171
1172 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1173 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1174 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1175 arg->cx->cfg.dial.timeout = -1;
1176 randinit();
1177 } else {
1178 timeout = atoi(arg->argv[arg->argn]);
1179
1180 if (timeout >= 0)
1181 arg->cx->cfg.dial.timeout = timeout;
1182 else {
1183 log_Printf(LogWARN, "Invalid redial timeout\n");
1184 return -1;
1185 }
1186 }
1187
1188 sep = strchr(arg->argv[arg->argn], '+');
1189 if (sep) {
1190 inc = atoi(++sep);
1191 osep = sep;
1192 if (inc >= 0)
1193 arg->cx->cfg.dial.inc = inc;
1194 else {
1195 log_Printf(LogWARN, "Invalid timeout increment\n");
1196 return -1;
1197 }
1198 sep = strchr(sep, '-');
1199 if (sep) {
1200 maxinc = atoi(++sep);
1201 if (maxinc >= 0)
1202 arg->cx->cfg.dial.maxinc = maxinc;
1203 else {
1204 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1205 return -1;
1206 }
1207 } else {
1208 /* Default timeout increment */
1209 arg->cx->cfg.dial.maxinc = 10;
1210 sep = osep;
1211 }
1212 } else {
1213 /* Default timeout increment & max increment */
1214 arg->cx->cfg.dial.inc = 0;
1215 arg->cx->cfg.dial.maxinc = 10;
1216 sep = arg->argv[arg->argn];
1217 }
1218
1219 sep = strchr(sep, '.');
1220 if (sep) {
1221 if (strcasecmp(++sep, "random") == 0) {
1222 arg->cx->cfg.dial.next_timeout = -1;
1223 randinit();
1224 } else {
1225 timeout = atoi(sep);
1226 if (timeout >= 0)
1227 arg->cx->cfg.dial.next_timeout = timeout;
1228 else {
1229 log_Printf(LogWARN, "Invalid next redial timeout\n");
1230 return -1;
1231 }
1232 }
1233 } else
1234 /* Default next timeout */
1235 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1236
1237 if (arg->argc == arg->argn+2) {
1238 tries = atoi(arg->argv[arg->argn+1]);
1239
1240 if (tries >= 0) {
1241 arg->cx->cfg.dial.max = tries;
1242 } else {
1243 log_Printf(LogWARN, "Invalid retry value\n");
1244 return 1;
1245 }
1246 }
1247 return 0;
1248 }
1249
1250 return -1;
1251 }
1252
1253 static const char * const states[] = {
1254 "closed",
1255 "opening",
1256 "hangup",
1257 "dial",
1258 "carrier",
1259 "logout",
1260 "login",
1261 "ready",
1262 "lcp",
1263 "auth",
1264 "cbcp",
1265 "open"
1266 };
1267
1268 const char *
datalink_State(struct datalink * dl)1269 datalink_State(struct datalink *dl)
1270 {
1271 if (dl->state >= NELEM(states))
1272 return "unknown";
1273 return states[dl->state];
1274 }
1275
1276 static void
datalink_NewState(struct datalink * dl,unsigned state)1277 datalink_NewState(struct datalink *dl, unsigned state)
1278 {
1279 if (state != dl->state) {
1280 if (state < NELEM(states)) {
1281 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1282 states[state]);
1283 dl->state = state;
1284 } else
1285 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1286 }
1287 }
1288
1289 struct datalink *
iov2datalink(struct bundle * bundle,struct iovec * iov,int * niov,int maxiov,int fd,int * auxfd,int * nauxfd)1290 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1291 int fd, int *auxfd, int *nauxfd)
1292 {
1293 struct datalink *dl, *cdl;
1294 struct fsm_retry copy;
1295 char *oname;
1296
1297 dl = (struct datalink *)iov[(*niov)++].iov_base;
1298 dl->name = iov[*niov].iov_base;
1299
1300 if (dl->name[DATALINK_MAXNAME-1]) {
1301 dl->name[DATALINK_MAXNAME-1] = '\0';
1302 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1303 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1304 }
1305
1306 /* Make sure the name is unique ! */
1307 oname = NULL;
1308 do {
1309 for (cdl = bundle->links; cdl; cdl = cdl->next)
1310 if (!strcasecmp(dl->name, cdl->name)) {
1311 if (oname)
1312 free(datalink_NextName(dl));
1313 else
1314 oname = datalink_NextName(dl);
1315 break; /* Keep renaming 'till we have no conflicts */
1316 }
1317 } while (cdl);
1318
1319 if (oname) {
1320 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1321 free(oname);
1322 } else {
1323 dl->name = strdup(dl->name);
1324 free(iov[*niov].iov_base);
1325 }
1326 (*niov)++;
1327
1328 dl->desc.type = DATALINK_DESCRIPTOR;
1329 dl->desc.UpdateSet = datalink_UpdateSet;
1330 dl->desc.IsSet = datalink_IsSet;
1331 dl->desc.Read = datalink_Read;
1332 dl->desc.Write = datalink_Write;
1333
1334 mp_linkInit(&dl->mp);
1335 *dl->phone.list = '\0';
1336 dl->phone.next = NULL;
1337 dl->phone.alt = NULL;
1338 dl->phone.chosen = "N/A";
1339
1340 dl->bundle = bundle;
1341 dl->next = NULL;
1342 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1343 dl->dial.tries = 0;
1344 dl->reconnect_tries = 0;
1345 dl->parent = &bundle->fsm;
1346 dl->fsmp.LayerStart = datalink_LayerStart;
1347 dl->fsmp.LayerUp = datalink_LayerUp;
1348 dl->fsmp.LayerDown = datalink_LayerDown;
1349 dl->fsmp.LayerFinish = datalink_LayerFinish;
1350 dl->fsmp.object = dl;
1351
1352 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1353
1354 if (!dl->physical) {
1355 free(dl->name);
1356 free(dl);
1357 dl = NULL;
1358 } else {
1359 copy = dl->pap.cfg.fsm;
1360 pap_Init(&dl->pap, dl->physical);
1361 dl->pap.cfg.fsm = copy;
1362
1363 copy = dl->chap.auth.cfg.fsm;
1364 chap_Init(&dl->chap, dl->physical);
1365 dl->chap.auth.cfg.fsm = copy;
1366
1367 cbcp_Init(&dl->cbcp, dl->physical);
1368
1369 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1370 chat_Init(&dl->chat, dl->physical);
1371
1372 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1373 dl->name, datalink_State(dl));
1374 }
1375
1376 return dl;
1377 }
1378
1379 int
datalink2iov(struct datalink * dl,struct iovec * iov,int * niov,int maxiov,int * auxfd,int * nauxfd)1380 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1381 int *auxfd, int *nauxfd)
1382 {
1383 /* If `dl' is NULL, we're allocating before a Fromiov() */
1384 int link_fd;
1385
1386 if (dl) {
1387 timer_Stop(&dl->dial.timer);
1388 /* The following is purely for the sake of paranoia */
1389 cbcp_Down(&dl->cbcp);
1390 timer_Stop(&dl->pap.authtimer);
1391 timer_Stop(&dl->chap.auth.authtimer);
1392 }
1393
1394 if (*niov >= maxiov - 1) {
1395 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1396 if (dl) {
1397 free(dl->name);
1398 free(dl);
1399 }
1400 return -1;
1401 }
1402
1403 iov[*niov].iov_base = (void *)dl;
1404 iov[(*niov)++].iov_len = sizeof *dl;
1405 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1406 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1407
1408 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1409 nauxfd);
1410
1411 if (link_fd == -1 && dl) {
1412 free(dl->name);
1413 free(dl);
1414 }
1415
1416 return link_fd;
1417 }
1418
1419 void
datalink_Rename(struct datalink * dl,const char * name)1420 datalink_Rename(struct datalink *dl, const char *name)
1421 {
1422 free(dl->name);
1423 dl->physical->link.name = dl->name = strdup(name);
1424 }
1425
1426 char *
datalink_NextName(struct datalink * dl)1427 datalink_NextName(struct datalink *dl)
1428 {
1429 int f, n;
1430 char *name, *oname;
1431
1432 n = strlen(dl->name);
1433 name = (char *)malloc(n+3);
1434 for (f = n - 1; f >= 0; f--)
1435 if (!isdigit(dl->name[f]))
1436 break;
1437 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1438 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1439 oname = dl->name;
1440 dl->name = name;
1441 /* our physical link name isn't updated (it probably isn't created yet) */
1442 return oname;
1443 }
1444
1445 int
datalink_SetMode(struct datalink * dl,int mode)1446 datalink_SetMode(struct datalink *dl, int mode)
1447 {
1448 if (!physical_SetMode(dl->physical, mode))
1449 return 0;
1450 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1451 dl->script.run = 0;
1452 if (dl->physical->type == PHYS_DIRECT)
1453 dl->reconnect_tries = 0;
1454 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1455 dl->state <= DATALINK_READY)
1456 datalink_Up(dl, 1, 1);
1457 return 1;
1458 }
1459
1460 int
datalink_GetDialTimeout(struct datalink * dl)1461 datalink_GetDialTimeout(struct datalink *dl)
1462 {
1463 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1464
1465 if (dl->dial.incs < dl->cfg.dial.maxinc)
1466 dl->dial.incs++;
1467
1468 return result;
1469 }
1470