1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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 static char *datalink_NextName(struct datalink *);
84
85 static void
datalink_OpenTimeout(void * v)86 datalink_OpenTimeout(void *v)
87 {
88 struct datalink *dl = (struct datalink *)v;
89
90 timer_Stop(&dl->dial.timer);
91 if (dl->state == DATALINK_OPENING)
92 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
93 }
94
95 static int
datalink_StartDialTimer(struct datalink * dl,int Timeout)96 datalink_StartDialTimer(struct datalink *dl, int Timeout)
97 {
98 int result = Timeout;
99
100 timer_Stop(&dl->dial.timer);
101 if (Timeout < 0)
102 result = (random() % DIAL_TIMEOUT) + 1;
103 dl->dial.timer.load = result ? result * SECTICKS : 1;
104 dl->dial.timer.func = datalink_OpenTimeout;
105 dl->dial.timer.name = "dial";
106 dl->dial.timer.arg = dl;
107 timer_Start(&dl->dial.timer);
108 if (dl->state == DATALINK_OPENING)
109 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
110 dl->name, result);
111 return result;
112 }
113
114 static void
datalink_HangupDone(struct datalink * dl)115 datalink_HangupDone(struct datalink *dl)
116 {
117 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
118 dl->physical->fd != -1) {
119 /* Don't close our device if the link is dedicated */
120 datalink_LoginDone(dl);
121 return;
122 }
123
124 chat_Finish(&dl->chat);
125 physical_Close(dl->physical);
126 dl->phone.chosen = "N/A";
127
128 if (dl->cbcp.required) {
129 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
130 dl->cfg.callback.opmask = 0;
131 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
132 sizeof dl->cfg.phone.list - 1);
133 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
134 dl->phone.alt = dl->phone.next = NULL;
135 dl->reconnect_tries = dl->cfg.reconnect.max;
136 dl->dial.tries = dl->cfg.dial.max;
137 dl->dial.incs = 0;
138 dl->script.run = 1;
139 dl->script.packetmode = 1;
140 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
141 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
142 bundle_LinksRemoved(dl->bundle);
143 /* if dial.timeout is < 0 (random), we don't override fsm.delay */
144 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
145 dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
146 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
147 cbcp_Down(&dl->cbcp);
148 datalink_NewState(dl, DATALINK_OPENING);
149 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
150 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
151 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
152 } else if (dl->bundle->CleaningUp ||
153 (dl->physical->type == PHYS_DIRECT) ||
154 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
155 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
156 datalink_NewState(dl, DATALINK_CLOSED);
157 dl->dial.tries = -1;
158 dl->dial.incs = 0;
159 dl->reconnect_tries = 0;
160 bundle_LinkClosed(dl->bundle, dl);
161 if (!dl->bundle->CleaningUp &&
162 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
163 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
164 } else {
165 datalink_NewState(dl, DATALINK_OPENING);
166 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
167 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
168 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
169 if (dl->dial.tries < 0) {
170 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
171 dl->dial.tries = dl->cfg.dial.max;
172 dl->dial.incs = 0;
173 dl->reconnect_tries--;
174 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
175 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
176 dl->cfg.reconnect.max);
177 bundle_Notify(dl->bundle, EX_RECONNECT);
178 } else {
179 if (dl->phone.next == NULL)
180 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
181 else
182 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
183 bundle_Notify(dl->bundle, EX_REDIAL);
184 }
185 }
186 }
187
188 const char *
datalink_ChoosePhoneNumber(struct datalink * dl)189 datalink_ChoosePhoneNumber(struct datalink *dl)
190 {
191 char *phone;
192
193 if (dl->phone.alt == NULL) {
194 if (dl->phone.next == NULL) {
195 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
196 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
197 if (*dl->phone.list == '\0')
198 return "";
199 dl->phone.next = dl->phone.list;
200 }
201 dl->phone.alt = strsep(&dl->phone.next, ":");
202 }
203 phone = strsep(&dl->phone.alt, "|");
204 dl->phone.chosen = *phone ? phone : "[NONE]";
205 if (*phone)
206 log_Printf(LogCHAT, "Phone: %s\n", phone);
207 return phone;
208 }
209
210 static void
datalink_LoginDone(struct datalink * dl)211 datalink_LoginDone(struct datalink *dl)
212 {
213 chat_Finish(&dl->chat);
214
215 if (!dl->script.packetmode) {
216 dl->dial.tries = -1;
217 dl->dial.incs = 0;
218 datalink_NewState(dl, DATALINK_READY);
219 } else if (!physical_Raw(dl->physical)) {
220 dl->dial.tries = 0;
221 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
222 if (dl->script.run) {
223 datalink_NewState(dl, DATALINK_LOGOUT);
224 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
225 log_Printf(LogWARN, "Invalid logout script\n");
226 } else {
227 physical_StopDeviceTimer(dl->physical);
228 if (dl->physical->type == PHYS_DEDICATED)
229 /* force a redial timeout */
230 physical_Close(dl->physical);
231 datalink_HangupDone(dl);
232 }
233 } else {
234 dl->dial.tries = -1;
235 dl->dial.incs = 0;
236
237 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
238 async_Setup(&dl->physical->async);
239
240 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
241 0 : dl->physical->link.lcp.cfg.openmode);
242 ccp_Setup(&dl->physical->link.ccp);
243
244 datalink_NewState(dl, DATALINK_LCP);
245 fsm_Up(&dl->physical->link.lcp.fsm);
246 fsm_Open(&dl->physical->link.lcp.fsm);
247 }
248 }
249
250 static int
datalink_UpdateSet(struct fdescriptor * d,fd_set * r,fd_set * w,fd_set * e,int * n)251 datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
252 int *n)
253 {
254 struct datalink *dl = descriptor2datalink(d);
255 int result;
256
257 result = 0;
258 switch (dl->state) {
259 case DATALINK_CLOSED:
260 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
261 PHYS_FOREGROUND|PHYS_DDIAL)) &&
262 !dl->bundle->CleaningUp)
263 /*
264 * Our first time in - DEDICATED & DDIAL never come down, and
265 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
266 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
267 * and fall through.
268 */
269 datalink_Up(dl, 1, 1);
270 else
271 break;
272 /* FALLTHROUGH */
273
274 case DATALINK_OPENING:
275 if (dl->dial.timer.state != TIMER_RUNNING) {
276 if (--dl->dial.tries < 0)
277 dl->dial.tries = 0;
278 if (physical_Open(dl->physical) >= 0) {
279 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
280 "Type `~?' for help\r\n", dl->name,
281 dl->physical->name.full);
282 if (dl->script.run) {
283 datalink_NewState(dl, DATALINK_DIAL);
284 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
285 *dl->cfg.script.dial ?
286 datalink_ChoosePhoneNumber(dl) : ""))
287 log_Printf(LogWARN, "Invalid dial script\n");
288 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
289 dl->cfg.dial.max)
290 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
291 dl->name, dl->cfg.dial.max - dl->dial.tries,
292 dl->cfg.dial.max);
293 } else
294 datalink_NewState(dl, DATALINK_CARRIER);
295 return datalink_UpdateSet(d, r, w, e, n);
296 } else {
297 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
298 dl->cfg.dial.max)
299 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
300 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
301 else
302 log_Printf(LogCHAT, "Failed to open device\n");
303
304 if (dl->bundle->CleaningUp ||
305 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
306 dl->cfg.dial.max && dl->dial.tries == 0)) {
307 datalink_NewState(dl, DATALINK_CLOSED);
308 dl->reconnect_tries = 0;
309 dl->dial.tries = -1;
310 log_WritePrompts(dl, "Failed to open %s\n",
311 dl->physical->name.full);
312 bundle_LinkClosed(dl->bundle, dl);
313 }
314 if (!dl->bundle->CleaningUp) {
315 int timeout;
316
317 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
318 bundle_Notify(dl->bundle, EX_REDIAL);
319 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
320 dl->physical->name.full, timeout);
321 }
322 }
323 }
324 break;
325
326 case DATALINK_CARRIER:
327 /* Wait for carrier on the device */
328 switch (physical_AwaitCarrier(dl->physical)) {
329 case CARRIER_PENDING:
330 log_Printf(LogDEBUG, "Waiting for carrier\n");
331 return 0; /* A device timer is running to wake us up again */
332
333 case CARRIER_OK:
334 if (dl->script.run) {
335 datalink_NewState(dl, DATALINK_LOGIN);
336 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
337 log_Printf(LogWARN, "Invalid login script\n");
338 } else
339 datalink_LoginDone(dl);
340 return datalink_UpdateSet(d, r, w, e, n);
341
342 case CARRIER_LOST:
343 physical_Offline(dl->physical); /* Is this required ? */
344 if (dl->script.run) {
345 datalink_NewState(dl, DATALINK_HANGUP);
346 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
347 log_Printf(LogWARN, "Invalid hangup script\n");
348 return datalink_UpdateSet(d, r, w, e, n);
349 } else {
350 datalink_HangupDone(dl);
351 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
352 }
353 }
354
355 case DATALINK_HANGUP:
356 case DATALINK_DIAL:
357 case DATALINK_LOGOUT:
358 case DATALINK_LOGIN:
359 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
360 switch (dl->chat.state) {
361 case CHAT_DONE:
362 /* script succeeded */
363 switch(dl->state) {
364 case DATALINK_HANGUP:
365 datalink_HangupDone(dl);
366 break;
367 case DATALINK_DIAL:
368 datalink_NewState(dl, DATALINK_CARRIER);
369 return datalink_UpdateSet(d, r, w, e, n);
370 case DATALINK_LOGOUT:
371 datalink_NewState(dl, DATALINK_HANGUP);
372 physical_Offline(dl->physical);
373 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
374 log_Printf(LogWARN, "Invalid hangup script\n");
375 return datalink_UpdateSet(d, r, w, e, n);
376 case DATALINK_LOGIN:
377 dl->phone.alt = NULL;
378 datalink_LoginDone(dl);
379 return datalink_UpdateSet(d, r, w, e, n);
380 }
381 break;
382 case CHAT_FAILED:
383 /* Going down - script failed */
384 log_Printf(LogWARN, "Chat script failed\n");
385 switch(dl->state) {
386 case DATALINK_HANGUP:
387 datalink_HangupDone(dl);
388 break;
389 case DATALINK_DIAL:
390 case DATALINK_LOGOUT:
391 case DATALINK_LOGIN:
392 datalink_NewState(dl, DATALINK_HANGUP);
393 physical_Offline(dl->physical);
394 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
395 log_Printf(LogWARN, "Invalid hangup script\n");
396 return datalink_UpdateSet(d, r, w, e, n);
397 }
398 break;
399 }
400 break;
401
402 case DATALINK_READY:
403 case DATALINK_LCP:
404 case DATALINK_AUTH:
405 case DATALINK_CBCP:
406 case DATALINK_OPEN:
407 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
408 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
409 break;
410 }
411 return result;
412 }
413
414 int
datalink_RemoveFromSet(struct datalink * dl,fd_set * r,fd_set * w,fd_set * e)415 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
416 {
417 return physical_RemoveFromSet(dl->physical, r, w, e);
418 }
419
420 static int
datalink_IsSet(struct fdescriptor * d,const fd_set * fdset)421 datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
422 {
423 struct datalink *dl = descriptor2datalink(d);
424
425 switch (dl->state) {
426 case DATALINK_CLOSED:
427 case DATALINK_OPENING:
428 break;
429
430 case DATALINK_HANGUP:
431 case DATALINK_DIAL:
432 case DATALINK_LOGOUT:
433 case DATALINK_LOGIN:
434 return descriptor_IsSet(&dl->chat.desc, fdset);
435
436 case DATALINK_READY:
437 case DATALINK_LCP:
438 case DATALINK_AUTH:
439 case DATALINK_CBCP:
440 case DATALINK_OPEN:
441 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
442 descriptor_IsSet(&dl->physical->desc, fdset);
443 }
444 return 0;
445 }
446
447 static void
datalink_Read(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)448 datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
449 {
450 struct datalink *dl = descriptor2datalink(d);
451
452 switch (dl->state) {
453 case DATALINK_CLOSED:
454 case DATALINK_OPENING:
455 break;
456
457 case DATALINK_HANGUP:
458 case DATALINK_DIAL:
459 case DATALINK_LOGOUT:
460 case DATALINK_LOGIN:
461 descriptor_Read(&dl->chat.desc, bundle, fdset);
462 break;
463
464 case DATALINK_READY:
465 case DATALINK_LCP:
466 case DATALINK_AUTH:
467 case DATALINK_CBCP:
468 case DATALINK_OPEN:
469 if (descriptor_IsSet(&dl->chap.desc, fdset))
470 descriptor_Read(&dl->chap.desc, bundle, fdset);
471 if (descriptor_IsSet(&dl->physical->desc, fdset))
472 descriptor_Read(&dl->physical->desc, bundle, fdset);
473 break;
474 }
475 }
476
477 static int
datalink_Write(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)478 datalink_Write(struct fdescriptor *d, struct bundle *bundle,
479 const fd_set *fdset)
480 {
481 struct datalink *dl = descriptor2datalink(d);
482 int result = 0;
483
484 switch (dl->state) {
485 case DATALINK_CLOSED:
486 case DATALINK_OPENING:
487 break;
488
489 case DATALINK_HANGUP:
490 case DATALINK_DIAL:
491 case DATALINK_LOGOUT:
492 case DATALINK_LOGIN:
493 if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) {
494 datalink_ComeDown(dl, CLOSE_NORMAL);
495 result = 0;
496 }
497 break;
498
499 case DATALINK_READY:
500 case DATALINK_LCP:
501 case DATALINK_AUTH:
502 case DATALINK_CBCP:
503 case DATALINK_OPEN:
504 if (descriptor_IsSet(&dl->chap.desc, fdset))
505 switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) {
506 case -1:
507 datalink_ComeDown(dl, CLOSE_NORMAL);
508 break;
509 case 1:
510 result++;
511 }
512 if (descriptor_IsSet(&dl->physical->desc, fdset))
513 switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) {
514 case -1:
515 datalink_ComeDown(dl, CLOSE_NORMAL);
516 break;
517 case 1:
518 result++;
519 }
520 break;
521 }
522
523 return result;
524 }
525
526 void
datalink_ComeDown(struct datalink * dl,int how)527 datalink_ComeDown(struct datalink *dl, int how)
528 {
529 int stayonline;
530
531 if (how == CLOSE_LCP)
532 datalink_DontHangup(dl);
533 else if (how == CLOSE_STAYDOWN)
534 datalink_StayDown(dl);
535
536 stayonline = dl->stayonline;
537 dl->stayonline = 0;
538
539 if (dl->state >= DATALINK_READY && stayonline) {
540 physical_StopDeviceTimer(dl->physical);
541 datalink_NewState(dl, DATALINK_READY);
542 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
543 physical_Offline(dl->physical);
544 if (dl->script.run && dl->state != DATALINK_OPENING) {
545 if (dl->state == DATALINK_LOGOUT) {
546 datalink_NewState(dl, DATALINK_HANGUP);
547 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
548 log_Printf(LogWARN, "Invalid hangup script\n");
549 } else {
550 datalink_NewState(dl, DATALINK_LOGOUT);
551 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
552 log_Printf(LogWARN, "Invalid logout script\n");
553 }
554 } else
555 datalink_HangupDone(dl);
556 }
557 }
558
559 static void
datalink_LayerStart(void * v,struct fsm * fp)560 datalink_LayerStart(void *v, struct fsm *fp)
561 {
562 /* The given FSM is about to start up ! */
563 struct datalink *dl = (struct datalink *)v;
564
565 if (fp->proto == PROTO_LCP)
566 (*dl->parent->LayerStart)(dl->parent->object, fp);
567 }
568
569 static void
datalink_LayerUp(void * v,struct fsm * fp)570 datalink_LayerUp(void *v, struct fsm *fp)
571 {
572 /* The given fsm is now up */
573 struct datalink *dl = (struct datalink *)v;
574 struct lcp *lcp = &dl->physical->link.lcp;
575
576 if (fp->proto == PROTO_LCP) {
577 datalink_GotAuthname(dl, "");
578 lcp->auth_ineed = lcp->want_auth;
579 lcp->auth_iwait = lcp->his_auth;
580 if (lcp->his_auth || lcp->want_auth) {
581 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
582 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
583 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
584 Auth2Nam(lcp->his_auth, lcp->his_authtype),
585 Auth2Nam(lcp->want_auth, lcp->want_authtype));
586 if (lcp->his_auth == PROTO_PAP)
587 auth_StartReq(&dl->pap);
588 if (lcp->want_auth == PROTO_CHAP)
589 auth_StartReq(&dl->chap.auth);
590 } else
591 datalink_AuthOk(dl);
592 } else if (fp->proto == PROTO_CCP)
593 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
594 }
595
596 static void
datalink_AuthReInit(struct datalink * dl)597 datalink_AuthReInit(struct datalink *dl)
598 {
599 auth_StopTimer(&dl->pap);
600 auth_StopTimer(&dl->chap.auth);
601 chap_ReInit(&dl->chap);
602 }
603
604 void
datalink_GotAuthname(struct datalink * dl,const char * name)605 datalink_GotAuthname(struct datalink *dl, const char *name)
606 {
607 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
608 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
609 }
610
611 void
datalink_NCPUp(struct datalink * dl)612 datalink_NCPUp(struct datalink *dl)
613 {
614 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
615
616 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
617 /* we've authenticated in multilink mode ! */
618 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
619 case MP_LINKSENT:
620 /* We've handed the link off to another ppp (well, we will soon) ! */
621 return;
622 case MP_UP:
623 /* First link in the bundle */
624 auth_Select(dl->bundle, dl->peer.authname);
625 bundle_CalculateBandwidth(dl->bundle);
626 /* FALLTHROUGH */
627 case MP_ADDED:
628 /* We're in multilink mode ! */
629 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
630 bundle_CalculateBandwidth(dl->bundle);
631 break;
632 case MP_FAILED:
633 datalink_AuthNotOk(dl);
634 return;
635 }
636 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
637 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
638 datalink_NewState(dl, DATALINK_OPEN);
639 bundle_CalculateBandwidth(dl->bundle);
640 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
641 return;
642 } else {
643 dl->bundle->ncp.mp.peer = dl->peer;
644 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
645 auth_Select(dl->bundle, dl->peer.authname);
646 }
647
648 if (ccpok) {
649 fsm_Up(&dl->physical->link.ccp.fsm);
650 fsm_Open(&dl->physical->link.ccp.fsm);
651 }
652 datalink_NewState(dl, DATALINK_OPEN);
653 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
654 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
655 }
656
657 void
datalink_CBCPComplete(struct datalink * dl)658 datalink_CBCPComplete(struct datalink *dl)
659 {
660 datalink_NewState(dl, DATALINK_LCP);
661 datalink_AuthReInit(dl);
662 fsm_Close(&dl->physical->link.lcp.fsm);
663 }
664
665 void
datalink_CBCPFailed(struct datalink * dl)666 datalink_CBCPFailed(struct datalink *dl)
667 {
668 cbcp_Down(&dl->cbcp);
669 datalink_CBCPComplete(dl);
670 }
671
672 void
datalink_AuthOk(struct datalink * dl)673 datalink_AuthOk(struct datalink *dl)
674 {
675 if ((dl->physical->link.lcp.his_callback.opmask &
676 CALLBACK_BIT(CALLBACK_CBCP) ||
677 dl->physical->link.lcp.want_callback.opmask &
678 CALLBACK_BIT(CALLBACK_CBCP)) &&
679 !(dl->physical->link.lcp.want_callback.opmask &
680 CALLBACK_BIT(CALLBACK_AUTH))) {
681 /* We must have agreed CBCP if AUTH isn't there any more */
682 datalink_NewState(dl, DATALINK_CBCP);
683 cbcp_Up(&dl->cbcp);
684 } else if (dl->physical->link.lcp.want_callback.opmask) {
685 /* It's not CBCP */
686 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
687 datalink_NewState(dl, DATALINK_LCP);
688 datalink_AuthReInit(dl);
689 fsm_Close(&dl->physical->link.lcp.fsm);
690 } else
691 switch (dl->physical->link.lcp.his_callback.opmask) {
692 case 0:
693 datalink_NCPUp(dl);
694 break;
695
696 case CALLBACK_BIT(CALLBACK_AUTH):
697 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
698 sizeof dl->cbcp.fsm.phone);
699 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
700 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
701 dl->peer.authname);
702 *dl->cbcp.fsm.phone = '\0';
703 } else {
704 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
705 if (ptr)
706 *ptr = '\0'; /* Call back on the first number */
707 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
708 dl->cbcp.fsm.phone);
709 dl->cbcp.required = 1;
710 }
711 dl->cbcp.fsm.delay = 0;
712 datalink_NewState(dl, DATALINK_LCP);
713 datalink_AuthReInit(dl);
714 fsm_Close(&dl->physical->link.lcp.fsm);
715 break;
716
717 case CALLBACK_BIT(CALLBACK_E164):
718 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
719 sizeof dl->cbcp.fsm.phone - 1);
720 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
721 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
722 dl->cbcp.fsm.phone);
723 dl->cbcp.required = 1;
724 dl->cbcp.fsm.delay = 0;
725 datalink_NewState(dl, DATALINK_LCP);
726 datalink_AuthReInit(dl);
727 fsm_Close(&dl->physical->link.lcp.fsm);
728 break;
729
730 default:
731 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
732 dl->name);
733 datalink_NewState(dl, DATALINK_LCP);
734 datalink_AuthReInit(dl);
735 fsm_Close(&dl->physical->link.lcp.fsm);
736 break;
737 }
738 }
739
740 void
datalink_AuthNotOk(struct datalink * dl)741 datalink_AuthNotOk(struct datalink *dl)
742 {
743 datalink_NewState(dl, DATALINK_LCP);
744 datalink_AuthReInit(dl);
745 fsm_Close(&dl->physical->link.lcp.fsm);
746 }
747
748 static void
datalink_LayerDown(void * v,struct fsm * fp)749 datalink_LayerDown(void *v, struct fsm *fp)
750 {
751 /* The given FSM has been told to come down */
752 struct datalink *dl = (struct datalink *)v;
753
754 if (fp->proto == PROTO_LCP) {
755 switch (dl->state) {
756 case DATALINK_OPEN:
757 peerid_Init(&dl->peer);
758 fsm2initial(&dl->physical->link.ccp.fsm);
759 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
760 (*dl->parent->LayerDown)(dl->parent->object, fp);
761 /* FALLTHROUGH (just in case) */
762
763 case DATALINK_CBCP:
764 if (!dl->cbcp.required)
765 cbcp_Down(&dl->cbcp);
766 /* FALLTHROUGH (just in case) */
767
768 case DATALINK_AUTH:
769 timer_Stop(&dl->pap.authtimer);
770 timer_Stop(&dl->chap.auth.authtimer);
771 }
772 datalink_NewState(dl, DATALINK_LCP);
773 datalink_AuthReInit(dl);
774 }
775 }
776
777 static void
datalink_LayerFinish(void * v,struct fsm * fp)778 datalink_LayerFinish(void *v, struct fsm *fp)
779 {
780 /* The given fsm is now down */
781 struct datalink *dl = (struct datalink *)v;
782
783 if (fp->proto == PROTO_LCP) {
784 fsm2initial(fp);
785 (*dl->parent->LayerFinish)(dl->parent->object, fp);
786 datalink_ComeDown(dl, CLOSE_NORMAL);
787 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
788 fsm_Open(fp); /* CCP goes to ST_STOPPED */
789 }
790
791 struct datalink *
datalink_Create(const char * name,struct bundle * bundle,int type)792 datalink_Create(const char *name, struct bundle *bundle, int type)
793 {
794 struct datalink *dl;
795
796 dl = (struct datalink *)malloc(sizeof(struct datalink));
797 if (dl == NULL)
798 return dl;
799
800 dl->desc.type = DATALINK_DESCRIPTOR;
801 dl->desc.UpdateSet = datalink_UpdateSet;
802 dl->desc.IsSet = datalink_IsSet;
803 dl->desc.Read = datalink_Read;
804 dl->desc.Write = datalink_Write;
805
806 dl->state = DATALINK_CLOSED;
807
808 *dl->cfg.script.dial = '\0';
809 *dl->cfg.script.login = '\0';
810 *dl->cfg.script.logout = '\0';
811 *dl->cfg.script.hangup = '\0';
812 *dl->cfg.phone.list = '\0';
813 *dl->phone.list = '\0';
814 dl->phone.next = NULL;
815 dl->phone.alt = NULL;
816 dl->phone.chosen = "N/A";
817 dl->stayonline = 0;
818 dl->script.run = 1;
819 dl->script.packetmode = 1;
820 mp_linkInit(&dl->mp);
821
822 dl->bundle = bundle;
823 dl->next = NULL;
824
825 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
826
827 dl->dial.tries = 0;
828 dl->cfg.dial.max = 1;
829 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
830 dl->cfg.dial.timeout = DIAL_TIMEOUT;
831 dl->cfg.dial.inc = 0;
832 dl->cfg.dial.maxinc = 10;
833
834 dl->reconnect_tries = 0;
835 dl->cfg.reconnect.max = 0;
836 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
837
838 dl->cfg.callback.opmask = 0;
839 dl->cfg.cbcp.delay = 0;
840 *dl->cfg.cbcp.phone = '\0';
841 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
842
843 dl->name = strdup(name);
844 peerid_Init(&dl->peer);
845 dl->parent = &bundle->fsm;
846 dl->fsmp.LayerStart = datalink_LayerStart;
847 dl->fsmp.LayerUp = datalink_LayerUp;
848 dl->fsmp.LayerDown = datalink_LayerDown;
849 dl->fsmp.LayerFinish = datalink_LayerFinish;
850 dl->fsmp.object = dl;
851
852 if ((dl->physical = physical_Create(dl, type)) == NULL) {
853 free(dl->name);
854 free(dl);
855 return NULL;
856 }
857
858 pap_Init(&dl->pap, dl->physical);
859 chap_Init(&dl->chap, dl->physical);
860 cbcp_Init(&dl->cbcp, dl->physical);
861
862 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
863 chat_Init(&dl->chat, dl->physical);
864
865 log_Printf(LogPHASE, "%s: Created in %s state\n",
866 dl->name, datalink_State(dl));
867
868 return dl;
869 }
870
871 struct datalink *
datalink_Clone(struct datalink * odl,const char * name)872 datalink_Clone(struct datalink *odl, const char *name)
873 {
874 struct datalink *dl;
875
876 dl = (struct datalink *)malloc(sizeof(struct datalink));
877 if (dl == NULL)
878 return dl;
879
880 dl->desc.type = DATALINK_DESCRIPTOR;
881 dl->desc.UpdateSet = datalink_UpdateSet;
882 dl->desc.IsSet = datalink_IsSet;
883 dl->desc.Read = datalink_Read;
884 dl->desc.Write = datalink_Write;
885
886 dl->state = DATALINK_CLOSED;
887
888 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
889 mp_linkInit(&dl->mp);
890 *dl->phone.list = '\0';
891 dl->phone.next = NULL;
892 dl->phone.alt = NULL;
893 dl->phone.chosen = "N/A";
894 dl->bundle = odl->bundle;
895 dl->next = NULL;
896 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
897 dl->dial.tries = 0;
898 dl->reconnect_tries = 0;
899 dl->name = strdup(name);
900 peerid_Init(&dl->peer);
901 dl->parent = odl->parent;
902 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
903 dl->fsmp.object = dl;
904
905 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
906 free(dl->name);
907 free(dl);
908 return NULL;
909 }
910 pap_Init(&dl->pap, dl->physical);
911 dl->pap.cfg = odl->pap.cfg;
912
913 chap_Init(&dl->chap, dl->physical);
914 dl->chap.auth.cfg = odl->chap.auth.cfg;
915
916 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
917 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
918 sizeof dl->physical->link.lcp.cfg);
919 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
920 sizeof dl->physical->link.ccp.cfg);
921 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
922 sizeof dl->physical->async.cfg);
923
924 cbcp_Init(&dl->cbcp, dl->physical);
925
926 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
927 chat_Init(&dl->chat, dl->physical);
928
929 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
930 dl->name, datalink_State(dl));
931
932 return dl;
933 }
934
935 struct datalink *
datalink_Destroy(struct datalink * dl)936 datalink_Destroy(struct datalink *dl)
937 {
938 struct datalink *result;
939
940 if (dl->state != DATALINK_CLOSED) {
941 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
942 datalink_State(dl));
943 switch (dl->state) {
944 case DATALINK_HANGUP:
945 case DATALINK_DIAL:
946 case DATALINK_LOGIN:
947 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
948 break;
949 }
950 }
951
952 chat_Destroy(&dl->chat);
953 timer_Stop(&dl->dial.timer);
954 result = dl->next;
955 physical_Destroy(dl->physical);
956 free(dl->name);
957 free(dl);
958
959 return result;
960 }
961
962 void
datalink_Up(struct datalink * dl,int runscripts,int packetmode)963 datalink_Up(struct datalink *dl, int runscripts, int packetmode)
964 {
965 if (!Enabled(dl->bundle, OPT_FORCE_SCRIPTS) &&
966 (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)))
967 /* Ignore scripts */
968 runscripts = 0;
969
970 switch (dl->state) {
971 case DATALINK_CLOSED:
972 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
973 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
974 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
975 datalink_NewState(dl, DATALINK_OPENING);
976 dl->reconnect_tries =
977 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
978 dl->dial.tries = dl->cfg.dial.max;
979 dl->script.run = runscripts;
980 dl->script.packetmode = packetmode;
981 break;
982
983 case DATALINK_OPENING:
984 if (!dl->script.run && runscripts)
985 dl->script.run = 1;
986 /* FALLTHROUGH */
987
988 case DATALINK_DIAL:
989 case DATALINK_LOGIN:
990 case DATALINK_READY:
991 if (!dl->script.packetmode && packetmode) {
992 dl->script.packetmode = 1;
993 if (dl->state == DATALINK_READY) {
994 dl->script.run = 0;
995 datalink_NewState(dl, DATALINK_CARRIER);
996 }
997 }
998 break;
999 }
1000 }
1001
1002 void
datalink_Close(struct datalink * dl,int how)1003 datalink_Close(struct datalink *dl, int how)
1004 {
1005 /* Please close */
1006 switch (dl->state) {
1007 case DATALINK_OPEN:
1008 peerid_Init(&dl->peer);
1009 fsm2initial(&dl->physical->link.ccp.fsm);
1010 /* FALLTHROUGH */
1011
1012 case DATALINK_CBCP:
1013 case DATALINK_AUTH:
1014 case DATALINK_LCP:
1015 datalink_AuthReInit(dl);
1016 if (how == CLOSE_LCP)
1017 datalink_DontHangup(dl);
1018 else if (how == CLOSE_STAYDOWN)
1019 datalink_StayDown(dl);
1020 fsm_Close(&dl->physical->link.lcp.fsm);
1021 break;
1022
1023 default:
1024 datalink_ComeDown(dl, how);
1025 }
1026 }
1027
1028 void
datalink_Down(struct datalink * dl,int how)1029 datalink_Down(struct datalink *dl, int how)
1030 {
1031 /* Carrier is lost */
1032 switch (dl->state) {
1033 case DATALINK_OPEN:
1034 peerid_Init(&dl->peer);
1035 fsm2initial(&dl->physical->link.ccp.fsm);
1036 /* FALLTHROUGH */
1037
1038 case DATALINK_CBCP:
1039 case DATALINK_AUTH:
1040 case DATALINK_LCP:
1041 fsm2initial(&dl->physical->link.lcp.fsm);
1042 if (dl->state == DATALINK_OPENING)
1043 return; /* we're doing a callback... */
1044 /* FALLTHROUGH */
1045
1046 default:
1047 datalink_ComeDown(dl, how);
1048 }
1049 }
1050
1051 void
datalink_StayDown(struct datalink * dl)1052 datalink_StayDown(struct datalink *dl)
1053 {
1054 dl->dial.tries = -1;
1055 dl->reconnect_tries = 0;
1056 dl->stayonline = 0;
1057 }
1058
1059 void
datalink_DontHangup(struct datalink * dl)1060 datalink_DontHangup(struct datalink *dl)
1061 {
1062 dl->dial.tries = -1;
1063 dl->reconnect_tries = 0;
1064 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
1065 }
1066
1067 int
datalink_Show(struct cmdargs const * arg)1068 datalink_Show(struct cmdargs const *arg)
1069 {
1070 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1071 prompt_Printf(arg->prompt, " State: %s\n",
1072 datalink_State(arg->cx));
1073 prompt_Printf(arg->prompt, " Peer name: ");
1074 if (*arg->cx->peer.authname)
1075 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1076 else if (arg->cx->state == DATALINK_OPEN)
1077 prompt_Printf(arg->prompt, "None requested\n");
1078 else
1079 prompt_Printf(arg->prompt, "N/A\n");
1080 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1081 mp_Enddisc(arg->cx->peer.enddisc.class,
1082 arg->cx->peer.enddisc.address,
1083 arg->cx->peer.enddisc.len));
1084
1085 prompt_Printf(arg->prompt, "\nDefaults:\n");
1086 prompt_Printf(arg->prompt, " Phone List: %s\n",
1087 arg->cx->cfg.phone.list);
1088 if (arg->cx->cfg.dial.max)
1089 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1090 arg->cx->cfg.dial.max);
1091 else
1092 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1093 if (arg->cx->cfg.dial.next_timeout >= 0)
1094 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1095 else
1096 prompt_Printf(arg->prompt, "random/");
1097 if (arg->cx->cfg.dial.timeout >= 0)
1098 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1099 else
1100 prompt_Printf(arg->prompt, "random\n");
1101 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1102 arg->cx->cfg.reconnect.max);
1103 if (arg->cx->cfg.reconnect.timeout > 0)
1104 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1105 else
1106 prompt_Printf(arg->prompt, "random\n");
1107 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1108 PHYS_DIRECT ? "accepted: " : "requested:");
1109 if (!arg->cx->cfg.callback.opmask)
1110 prompt_Printf(arg->prompt, "none\n");
1111 else {
1112 int comma = 0;
1113
1114 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1115 prompt_Printf(arg->prompt, "none");
1116 comma = 1;
1117 }
1118 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1119 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1120 comma = 1;
1121 }
1122 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1123 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1124 if (arg->cx->physical->type != PHYS_DIRECT)
1125 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1126 comma = 1;
1127 }
1128 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1129 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1130 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1131 arg->cx->cfg.cbcp.delay);
1132 prompt_Printf(arg->prompt, " phone: ");
1133 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1134 if (arg->cx->physical->type & PHYS_DIRECT)
1135 prompt_Printf(arg->prompt, "Caller decides\n");
1136 else
1137 prompt_Printf(arg->prompt, "Dialback server decides\n");
1138 } else
1139 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1140 prompt_Printf(arg->prompt, " timeout: %lds\n",
1141 arg->cx->cfg.cbcp.fsmretry);
1142 } else
1143 prompt_Printf(arg->prompt, "\n");
1144 }
1145
1146 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1147 arg->cx->cfg.script.dial);
1148 prompt_Printf(arg->prompt, " Login Script: %s\n",
1149 arg->cx->cfg.script.login);
1150 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1151 arg->cx->cfg.script.logout);
1152 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1153 arg->cx->cfg.script.hangup);
1154 return 0;
1155 }
1156
1157 int
datalink_SetReconnect(struct cmdargs const * arg)1158 datalink_SetReconnect(struct cmdargs const *arg)
1159 {
1160 if (arg->argc == arg->argn+2) {
1161 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1162 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1163 return 0;
1164 }
1165 return -1;
1166 }
1167
1168 int
datalink_SetRedial(struct cmdargs const * arg)1169 datalink_SetRedial(struct cmdargs const *arg)
1170 {
1171 const char *sep, *osep;
1172 int timeout, inc, maxinc, tries;
1173
1174 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1175 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1176 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1177 arg->cx->cfg.dial.timeout = -1;
1178 randinit();
1179 } else {
1180 timeout = atoi(arg->argv[arg->argn]);
1181
1182 if (timeout >= 0)
1183 arg->cx->cfg.dial.timeout = timeout;
1184 else {
1185 log_Printf(LogWARN, "Invalid redial timeout\n");
1186 return -1;
1187 }
1188 }
1189
1190 sep = strchr(arg->argv[arg->argn], '+');
1191 if (sep) {
1192 inc = atoi(++sep);
1193 osep = sep;
1194 if (inc >= 0)
1195 arg->cx->cfg.dial.inc = inc;
1196 else {
1197 log_Printf(LogWARN, "Invalid timeout increment\n");
1198 return -1;
1199 }
1200 sep = strchr(sep, '-');
1201 if (sep) {
1202 maxinc = atoi(++sep);
1203 if (maxinc >= 0)
1204 arg->cx->cfg.dial.maxinc = maxinc;
1205 else {
1206 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1207 return -1;
1208 }
1209 } else {
1210 /* Default timeout increment */
1211 arg->cx->cfg.dial.maxinc = 10;
1212 sep = osep;
1213 }
1214 } else {
1215 /* Default timeout increment & max increment */
1216 arg->cx->cfg.dial.inc = 0;
1217 arg->cx->cfg.dial.maxinc = 10;
1218 sep = arg->argv[arg->argn];
1219 }
1220
1221 sep = strchr(sep, '.');
1222 if (sep) {
1223 if (strcasecmp(++sep, "random") == 0) {
1224 arg->cx->cfg.dial.next_timeout = -1;
1225 randinit();
1226 } else {
1227 timeout = atoi(sep);
1228 if (timeout >= 0)
1229 arg->cx->cfg.dial.next_timeout = timeout;
1230 else {
1231 log_Printf(LogWARN, "Invalid next redial timeout\n");
1232 return -1;
1233 }
1234 }
1235 } else
1236 /* Default next timeout */
1237 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1238
1239 if (arg->argc == arg->argn+2) {
1240 tries = atoi(arg->argv[arg->argn+1]);
1241
1242 if (tries >= 0) {
1243 arg->cx->cfg.dial.max = tries;
1244 } else {
1245 log_Printf(LogWARN, "Invalid retry value\n");
1246 return 1;
1247 }
1248 }
1249 return 0;
1250 }
1251
1252 return -1;
1253 }
1254
1255 static const char * const states[] = {
1256 "closed",
1257 "opening",
1258 "hangup",
1259 "dial",
1260 "carrier",
1261 "logout",
1262 "login",
1263 "ready",
1264 "lcp",
1265 "auth",
1266 "cbcp",
1267 "open"
1268 };
1269
1270 const char *
datalink_State(struct datalink * dl)1271 datalink_State(struct datalink *dl)
1272 {
1273 if (dl->state >= sizeof states / sizeof states[0])
1274 return "unknown";
1275 return states[dl->state];
1276 }
1277
1278 static void
datalink_NewState(struct datalink * dl,unsigned state)1279 datalink_NewState(struct datalink *dl, unsigned state)
1280 {
1281 if (state != dl->state) {
1282 if (state < sizeof states / sizeof states[0]) {
1283 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1284 states[state]);
1285 dl->state = state;
1286 } else
1287 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1288 }
1289 }
1290
1291 struct datalink *
iov2datalink(struct bundle * bundle,struct iovec * iov,int * niov,int maxiov,int fd,int * auxfd,int * nauxfd)1292 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1293 int fd, int *auxfd, int *nauxfd)
1294 {
1295 struct datalink *dl, *cdl;
1296 struct fsm_retry copy;
1297 char *oname, *pname;
1298
1299 dl = (struct datalink *)iov[(*niov)++].iov_base;
1300 dl->name = iov[*niov].iov_base;
1301
1302 if (dl->name[DATALINK_MAXNAME-1]) {
1303 dl->name[DATALINK_MAXNAME-1] = '\0';
1304 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1305 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1306 }
1307
1308 /* Make sure the name is unique ! */
1309 oname = NULL;
1310 do {
1311 for (cdl = bundle->links; cdl; cdl = cdl->next)
1312 if (!strcasecmp(dl->name, cdl->name)) {
1313 if ((pname = datalink_NextName(dl)) == NULL) {
1314 for ((*niov)--; *niov < maxiov; (*niov)++)
1315 free(iov[*niov].iov_base);
1316 return NULL;
1317 } else if (oname)
1318 free(pname);
1319 else
1320 oname = pname;
1321 break; /* Keep renaming 'till we have no conflicts */
1322 }
1323 } while (cdl);
1324
1325 if (oname) {
1326 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1327 free(oname);
1328 } else {
1329 dl->name = strdup(dl->name);
1330 free(iov[*niov].iov_base);
1331 }
1332 (*niov)++;
1333
1334 dl->desc.type = DATALINK_DESCRIPTOR;
1335 dl->desc.UpdateSet = datalink_UpdateSet;
1336 dl->desc.IsSet = datalink_IsSet;
1337 dl->desc.Read = datalink_Read;
1338 dl->desc.Write = datalink_Write;
1339
1340 mp_linkInit(&dl->mp);
1341 *dl->phone.list = '\0';
1342 dl->phone.next = NULL;
1343 dl->phone.alt = NULL;
1344 dl->phone.chosen = "N/A";
1345
1346 dl->bundle = bundle;
1347 dl->next = NULL;
1348 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1349 dl->dial.tries = 0;
1350 dl->reconnect_tries = 0;
1351 dl->parent = &bundle->fsm;
1352 dl->fsmp.LayerStart = datalink_LayerStart;
1353 dl->fsmp.LayerUp = datalink_LayerUp;
1354 dl->fsmp.LayerDown = datalink_LayerDown;
1355 dl->fsmp.LayerFinish = datalink_LayerFinish;
1356 dl->fsmp.object = dl;
1357
1358 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1359
1360 if (!dl->physical) {
1361 free(dl->name);
1362 free(dl);
1363 dl = NULL;
1364 } else {
1365 copy = dl->pap.cfg.fsm;
1366 pap_Init(&dl->pap, dl->physical);
1367 dl->pap.cfg.fsm = copy;
1368
1369 copy = dl->chap.auth.cfg.fsm;
1370 chap_Init(&dl->chap, dl->physical);
1371 dl->chap.auth.cfg.fsm = copy;
1372
1373 cbcp_Init(&dl->cbcp, dl->physical);
1374
1375 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1376 chat_Init(&dl->chat, dl->physical);
1377
1378 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1379 dl->name, datalink_State(dl));
1380 }
1381
1382 return dl;
1383 }
1384
1385 int
datalink2iov(struct datalink * dl,struct iovec * iov,int * niov,int maxiov,int * auxfd,int * nauxfd)1386 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1387 int *auxfd, int *nauxfd)
1388 {
1389 /* If `dl' is NULL, we're allocating before a Fromiov() */
1390 int link_fd;
1391
1392 if (dl) {
1393 timer_Stop(&dl->dial.timer);
1394 /* The following is purely for the sake of paranoia */
1395 cbcp_Down(&dl->cbcp);
1396 timer_Stop(&dl->pap.authtimer);
1397 timer_Stop(&dl->chap.auth.authtimer);
1398 }
1399
1400 if (*niov >= maxiov - 1) {
1401 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1402 if (dl) {
1403 free(dl->name);
1404 free(dl);
1405 }
1406 return -1;
1407 }
1408
1409 iov[*niov].iov_base = (void *)dl;
1410 iov[(*niov)++].iov_len = sizeof *dl;
1411 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1412 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1413
1414 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1415 nauxfd);
1416
1417 if (link_fd == -1 && dl) {
1418 free(dl->name);
1419 free(dl);
1420 }
1421
1422 return link_fd;
1423 }
1424
1425 void
datalink_Rename(struct datalink * dl,const char * name)1426 datalink_Rename(struct datalink *dl, const char *name)
1427 {
1428 free(dl->name);
1429 dl->physical->link.name = dl->name = strdup(name);
1430 }
1431
1432 static char *
datalink_NextName(struct datalink * dl)1433 datalink_NextName(struct datalink *dl)
1434 {
1435 int f, n;
1436 char *name, *oname;
1437
1438 n = strlen(dl->name);
1439 if ((name = (char *)malloc(n+3)) == NULL) {
1440 log_Printf(LogERROR, "datalink_NextName: Out of memory !\n");
1441 return NULL;
1442 }
1443 for (f = n - 1; f >= 0; f--)
1444 if (!isdigit(dl->name[f]))
1445 break;
1446 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1447 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1448 oname = dl->name;
1449 dl->name = name;
1450 /* our physical link name isn't updated (it probably isn't created yet) */
1451 return oname;
1452 }
1453
1454 int
datalink_SetMode(struct datalink * dl,int mode)1455 datalink_SetMode(struct datalink *dl, int mode)
1456 {
1457 if (!physical_SetMode(dl->physical, mode))
1458 return 0;
1459 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1460 dl->script.run = 0;
1461 if (dl->physical->type == PHYS_DIRECT)
1462 dl->reconnect_tries = 0;
1463 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1464 dl->state <= DATALINK_READY)
1465 datalink_Up(dl, 1, 1);
1466 return 1;
1467 }
1468
1469 int
datalink_GetDialTimeout(struct datalink * dl)1470 datalink_GetDialTimeout(struct datalink *dl)
1471 {
1472 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1473
1474 if (dl->dial.incs < dl->cfg.dial.maxinc)
1475 dl->dial.incs++;
1476
1477 return result;
1478 }
1479