1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD$
29 */
30
31 #include <sys/param.h>
32 #include <netinet/in.h>
33 #include <netinet/in_systm.h>
34 #include <netinet/ip.h>
35 #include <sys/socket.h>
36 #include <sys/un.h>
37
38 #include <ctype.h>
39 #include <stdarg.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <sys/uio.h>
44 #include <termios.h>
45
46 #include "layer.h"
47 #include "mbuf.h"
48 #include "log.h"
49 #include "defs.h"
50 #include "timer.h"
51 #include "fsm.h"
52 #include "descriptor.h"
53 #include "lqr.h"
54 #include "hdlc.h"
55 #include "lcp.h"
56 #include "async.h"
57 #include "throughput.h"
58 #include "ccp.h"
59 #include "link.h"
60 #include "physical.h"
61 #include "iplist.h"
62 #include "slcompress.h"
63 #include "ncpaddr.h"
64 #include "ipcp.h"
65 #include "filter.h"
66 #include "mp.h"
67 #ifndef NORADIUS
68 #include "radius.h"
69 #endif
70 #include "ipv6cp.h"
71 #include "ncp.h"
72 #include "bundle.h"
73 #include "chat.h"
74 #include "auth.h"
75 #include "prompt.h"
76 #include "proto.h"
77 #include "pap.h"
78 #include "chap.h"
79 #include "command.h"
80 #include "cbcp.h"
81 #include "datalink.h"
82
83 static void datalink_LoginDone(struct datalink *);
84 static void datalink_NewState(struct datalink *, unsigned);
85 static char *datalink_NextName(struct datalink *);
86
87 static void
datalink_OpenTimeout(void * v)88 datalink_OpenTimeout(void *v)
89 {
90 struct datalink *dl = (struct datalink *)v;
91
92 timer_Stop(&dl->dial.timer);
93 if (dl->state == DATALINK_OPENING)
94 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
95 }
96
97 static int
datalink_StartDialTimer(struct datalink * dl,int Timeout)98 datalink_StartDialTimer(struct datalink *dl, int Timeout)
99 {
100 int result = Timeout;
101
102 timer_Stop(&dl->dial.timer);
103 if (Timeout < 0)
104 result = (random() % DIAL_TIMEOUT) + 1;
105 dl->dial.timer.load = result ? result * SECTICKS : 1;
106 dl->dial.timer.func = datalink_OpenTimeout;
107 dl->dial.timer.name = "dial";
108 dl->dial.timer.arg = dl;
109 timer_Start(&dl->dial.timer);
110 if (dl->state == DATALINK_OPENING)
111 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
112 dl->name, result);
113 return result;
114 }
115
116 static void
datalink_HangupDone(struct datalink * dl)117 datalink_HangupDone(struct datalink *dl)
118 {
119 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
120 dl->physical->fd != -1) {
121 /* Don't close our device if the link is dedicated */
122 datalink_LoginDone(dl);
123 return;
124 }
125
126 chat_Finish(&dl->chat);
127 physical_Close(dl->physical);
128 dl->phone.chosen = "N/A";
129
130 if (dl->cbcp.required) {
131 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
132 dl->cfg.callback.opmask = 0;
133 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
134 sizeof dl->cfg.phone.list - 1);
135 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
136 dl->phone.alt = dl->phone.next = NULL;
137 dl->reconnect_tries = dl->cfg.reconnect.max;
138 dl->dial.tries = dl->cfg.dial.max;
139 dl->dial.incs = 0;
140 dl->script.run = 1;
141 dl->script.packetmode = 1;
142 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
143 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
144 bundle_LinksRemoved(dl->bundle);
145 /* if dial.timeout is < 0 (random), we don't override fsm.delay */
146 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
147 dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
148 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
149 cbcp_Down(&dl->cbcp);
150 datalink_NewState(dl, DATALINK_OPENING);
151 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
152 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
153 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
154 } else if (dl->bundle->CleaningUp ||
155 (dl->physical->type == PHYS_DIRECT) ||
156 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
157 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
158 datalink_NewState(dl, DATALINK_CLOSED);
159 dl->dial.tries = -1;
160 dl->dial.incs = 0;
161 dl->reconnect_tries = 0;
162 bundle_LinkClosed(dl->bundle, dl);
163 if (!dl->bundle->CleaningUp &&
164 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
165 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
166 } else {
167 datalink_NewState(dl, DATALINK_OPENING);
168 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
169 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
170 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
171 if (dl->dial.tries < 0) {
172 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
173 dl->dial.tries = dl->cfg.dial.max;
174 dl->dial.incs = 0;
175 dl->reconnect_tries--;
176 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
177 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
178 dl->cfg.reconnect.max);
179 bundle_Notify(dl->bundle, EX_RECONNECT);
180 } else {
181 if (dl->phone.next == NULL)
182 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
183 else
184 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
185 bundle_Notify(dl->bundle, EX_REDIAL);
186 }
187 }
188 }
189
190 const char *
datalink_ChoosePhoneNumber(struct datalink * dl)191 datalink_ChoosePhoneNumber(struct datalink *dl)
192 {
193 char *phone;
194
195 if (dl->phone.alt == NULL) {
196 if (dl->phone.next == NULL) {
197 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
198 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
199 if (*dl->phone.list == '\0')
200 return "";
201 dl->phone.next = dl->phone.list;
202 }
203 dl->phone.alt = strsep(&dl->phone.next, ":");
204 }
205 phone = strsep(&dl->phone.alt, "|");
206 dl->phone.chosen = *phone ? phone : "[NONE]";
207 if (*phone)
208 log_Printf(LogCHAT, "Phone: %s\n", phone);
209 return phone;
210 }
211
212 static void
datalink_LoginDone(struct datalink * dl)213 datalink_LoginDone(struct datalink *dl)
214 {
215 chat_Finish(&dl->chat);
216
217 if (!dl->script.packetmode) {
218 dl->dial.tries = -1;
219 dl->dial.incs = 0;
220 datalink_NewState(dl, DATALINK_READY);
221 } else if (!physical_Raw(dl->physical)) {
222 dl->dial.tries = 0;
223 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
224 if (dl->script.run) {
225 datalink_NewState(dl, DATALINK_LOGOUT);
226 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
227 log_Printf(LogWARN, "Invalid logout script\n");
228 } else {
229 physical_StopDeviceTimer(dl->physical);
230 if (dl->physical->type == PHYS_DEDICATED)
231 /* force a redial timeout */
232 physical_Close(dl->physical);
233 datalink_HangupDone(dl);
234 }
235 } else {
236 dl->dial.tries = -1;
237 dl->dial.incs = 0;
238
239 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
240 async_Setup(&dl->physical->async);
241
242 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
243 0 : dl->physical->link.lcp.cfg.openmode);
244 ccp_Setup(&dl->physical->link.ccp);
245
246 datalink_NewState(dl, DATALINK_LCP);
247 fsm_Up(&dl->physical->link.lcp.fsm);
248 fsm_Open(&dl->physical->link.lcp.fsm);
249 }
250 }
251
252 static int
datalink_UpdateSet(struct fdescriptor * d,fd_set * r,fd_set * w,fd_set * e,int * n)253 datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
254 int *n)
255 {
256 struct datalink *dl = descriptor2datalink(d);
257 int result;
258
259 result = 0;
260 switch (dl->state) {
261 case DATALINK_CLOSED:
262 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
263 PHYS_FOREGROUND|PHYS_DDIAL)) &&
264 !dl->bundle->CleaningUp)
265 /*
266 * Our first time in - DEDICATED & DDIAL never come down, and
267 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
268 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
269 * and fall through.
270 */
271 datalink_Up(dl, 1, 1);
272 else
273 break;
274 /* FALLTHROUGH */
275
276 case DATALINK_OPENING:
277 if (dl->dial.timer.state != TIMER_RUNNING) {
278 if (--dl->dial.tries < 0)
279 dl->dial.tries = 0;
280 if (physical_Open(dl->physical) >= 0) {
281 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
282 "Type `~?' for help\r\n", dl->name,
283 dl->physical->name.full);
284 if (dl->script.run) {
285 datalink_NewState(dl, DATALINK_DIAL);
286 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
287 *dl->cfg.script.dial ?
288 datalink_ChoosePhoneNumber(dl) : ""))
289 log_Printf(LogWARN, "Invalid dial script\n");
290 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
291 dl->cfg.dial.max)
292 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
293 dl->name, dl->cfg.dial.max - dl->dial.tries,
294 dl->cfg.dial.max);
295 } else
296 datalink_NewState(dl, DATALINK_CARRIER);
297 return datalink_UpdateSet(d, r, w, e, n);
298 } else {
299 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
300 dl->cfg.dial.max)
301 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
302 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
303 else
304 log_Printf(LogCHAT, "Failed to open device\n");
305
306 if (dl->bundle->CleaningUp ||
307 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
308 dl->cfg.dial.max && dl->dial.tries == 0)) {
309 datalink_NewState(dl, DATALINK_CLOSED);
310 dl->reconnect_tries = 0;
311 dl->dial.tries = -1;
312 log_WritePrompts(dl, "Failed to open %s\n",
313 dl->physical->name.full);
314 bundle_LinkClosed(dl->bundle, dl);
315 }
316 if (!dl->bundle->CleaningUp) {
317 int timeout;
318
319 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
320 bundle_Notify(dl->bundle, EX_REDIAL);
321 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
322 dl->physical->name.full, timeout);
323 }
324 }
325 }
326 break;
327
328 case DATALINK_CARRIER:
329 /* Wait for carrier on the device */
330 switch (physical_AwaitCarrier(dl->physical)) {
331 case CARRIER_PENDING:
332 log_Printf(LogDEBUG, "Waiting for carrier\n");
333 return 0; /* A device timer is running to wake us up again */
334
335 case CARRIER_OK:
336 if (dl->script.run) {
337 datalink_NewState(dl, DATALINK_LOGIN);
338 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
339 log_Printf(LogWARN, "Invalid login script\n");
340 } else
341 datalink_LoginDone(dl);
342 return datalink_UpdateSet(d, r, w, e, n);
343
344 case CARRIER_LOST:
345 physical_Offline(dl->physical); /* Is this required ? */
346 if (dl->script.run) {
347 datalink_NewState(dl, DATALINK_HANGUP);
348 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
349 log_Printf(LogWARN, "Invalid hangup script\n");
350 return datalink_UpdateSet(d, r, w, e, n);
351 } else {
352 datalink_HangupDone(dl);
353 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
354 }
355 }
356
357 case DATALINK_HANGUP:
358 case DATALINK_DIAL:
359 case DATALINK_LOGOUT:
360 case DATALINK_LOGIN:
361 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
362 switch (dl->chat.state) {
363 case CHAT_DONE:
364 /* script succeeded */
365 switch(dl->state) {
366 case DATALINK_HANGUP:
367 datalink_HangupDone(dl);
368 break;
369 case DATALINK_DIAL:
370 datalink_NewState(dl, DATALINK_CARRIER);
371 return datalink_UpdateSet(d, r, w, e, n);
372 case DATALINK_LOGOUT:
373 datalink_NewState(dl, DATALINK_HANGUP);
374 physical_Offline(dl->physical);
375 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
376 log_Printf(LogWARN, "Invalid hangup script\n");
377 return datalink_UpdateSet(d, r, w, e, n);
378 case DATALINK_LOGIN:
379 dl->phone.alt = NULL;
380 datalink_LoginDone(dl);
381 return datalink_UpdateSet(d, r, w, e, n);
382 }
383 break;
384 case CHAT_FAILED:
385 /* Going down - script failed */
386 log_Printf(LogWARN, "Chat script failed\n");
387 switch(dl->state) {
388 case DATALINK_HANGUP:
389 datalink_HangupDone(dl);
390 break;
391 case DATALINK_DIAL:
392 case DATALINK_LOGOUT:
393 case DATALINK_LOGIN:
394 datalink_NewState(dl, DATALINK_HANGUP);
395 physical_Offline(dl->physical);
396 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
397 log_Printf(LogWARN, "Invalid hangup script\n");
398 return datalink_UpdateSet(d, r, w, e, n);
399 }
400 break;
401 }
402 break;
403
404 case DATALINK_READY:
405 case DATALINK_LCP:
406 case DATALINK_AUTH:
407 case DATALINK_CBCP:
408 case DATALINK_OPEN:
409 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
410 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
411 break;
412 }
413 return result;
414 }
415
416 int
datalink_RemoveFromSet(struct datalink * dl,fd_set * r,fd_set * w,fd_set * e)417 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
418 {
419 return physical_RemoveFromSet(dl->physical, r, w, e);
420 }
421
422 static int
datalink_IsSet(struct fdescriptor * d,const fd_set * fdset)423 datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
424 {
425 struct datalink *dl = descriptor2datalink(d);
426
427 switch (dl->state) {
428 case DATALINK_CLOSED:
429 case DATALINK_OPENING:
430 break;
431
432 case DATALINK_HANGUP:
433 case DATALINK_DIAL:
434 case DATALINK_LOGOUT:
435 case DATALINK_LOGIN:
436 return descriptor_IsSet(&dl->chat.desc, fdset);
437
438 case DATALINK_READY:
439 case DATALINK_LCP:
440 case DATALINK_AUTH:
441 case DATALINK_CBCP:
442 case DATALINK_OPEN:
443 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
444 descriptor_IsSet(&dl->physical->desc, fdset);
445 }
446 return 0;
447 }
448
449 static void
datalink_Read(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)450 datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
451 {
452 struct datalink *dl = descriptor2datalink(d);
453
454 switch (dl->state) {
455 case DATALINK_CLOSED:
456 case DATALINK_OPENING:
457 break;
458
459 case DATALINK_HANGUP:
460 case DATALINK_DIAL:
461 case DATALINK_LOGOUT:
462 case DATALINK_LOGIN:
463 descriptor_Read(&dl->chat.desc, bundle, fdset);
464 break;
465
466 case DATALINK_READY:
467 case DATALINK_LCP:
468 case DATALINK_AUTH:
469 case DATALINK_CBCP:
470 case DATALINK_OPEN:
471 if (descriptor_IsSet(&dl->chap.desc, fdset))
472 descriptor_Read(&dl->chap.desc, bundle, fdset);
473 if (descriptor_IsSet(&dl->physical->desc, fdset))
474 descriptor_Read(&dl->physical->desc, bundle, fdset);
475 break;
476 }
477 }
478
479 static int
datalink_Write(struct fdescriptor * d,struct bundle * bundle,const fd_set * fdset)480 datalink_Write(struct fdescriptor *d, struct bundle *bundle,
481 const fd_set *fdset)
482 {
483 struct datalink *dl = descriptor2datalink(d);
484 int result = 0;
485
486 switch (dl->state) {
487 case DATALINK_CLOSED:
488 case DATALINK_OPENING:
489 break;
490
491 case DATALINK_HANGUP:
492 case DATALINK_DIAL:
493 case DATALINK_LOGOUT:
494 case DATALINK_LOGIN:
495 if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) {
496 datalink_ComeDown(dl, CLOSE_NORMAL);
497 result = 0;
498 }
499 break;
500
501 case DATALINK_READY:
502 case DATALINK_LCP:
503 case DATALINK_AUTH:
504 case DATALINK_CBCP:
505 case DATALINK_OPEN:
506 if (descriptor_IsSet(&dl->chap.desc, fdset))
507 switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) {
508 case -1:
509 datalink_ComeDown(dl, CLOSE_NORMAL);
510 break;
511 case 1:
512 result++;
513 }
514 if (descriptor_IsSet(&dl->physical->desc, fdset))
515 switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) {
516 case -1:
517 datalink_ComeDown(dl, CLOSE_NORMAL);
518 break;
519 case 1:
520 result++;
521 }
522 break;
523 }
524
525 return result;
526 }
527
528 void
datalink_ComeDown(struct datalink * dl,int how)529 datalink_ComeDown(struct datalink *dl, int how)
530 {
531 int stayonline;
532
533 if (how == CLOSE_LCP)
534 datalink_DontHangup(dl);
535 else if (how == CLOSE_STAYDOWN)
536 datalink_StayDown(dl);
537
538 stayonline = dl->stayonline;
539 dl->stayonline = 0;
540
541 if (dl->state >= DATALINK_READY && stayonline) {
542 physical_StopDeviceTimer(dl->physical);
543 datalink_NewState(dl, DATALINK_READY);
544 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
545 physical_Offline(dl->physical);
546 if (dl->script.run && dl->state != DATALINK_OPENING) {
547 if (dl->state == DATALINK_LOGOUT) {
548 datalink_NewState(dl, DATALINK_HANGUP);
549 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
550 log_Printf(LogWARN, "Invalid hangup script\n");
551 } else {
552 datalink_NewState(dl, DATALINK_LOGOUT);
553 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
554 log_Printf(LogWARN, "Invalid logout script\n");
555 }
556 } else
557 datalink_HangupDone(dl);
558 }
559 }
560
561 static void
datalink_LayerStart(void * v,struct fsm * fp)562 datalink_LayerStart(void *v, struct fsm *fp)
563 {
564 /* The given FSM is about to start up ! */
565 struct datalink *dl = (struct datalink *)v;
566
567 if (fp->proto == PROTO_LCP)
568 (*dl->parent->LayerStart)(dl->parent->object, fp);
569 }
570
571 static void
datalink_LayerUp(void * v,struct fsm * fp)572 datalink_LayerUp(void *v, struct fsm *fp)
573 {
574 /* The given fsm is now up */
575 struct datalink *dl = (struct datalink *)v;
576 struct lcp *lcp = &dl->physical->link.lcp;
577
578 if (fp->proto == PROTO_LCP) {
579 datalink_GotAuthname(dl, "");
580 lcp->auth_ineed = lcp->want_auth;
581 lcp->auth_iwait = lcp->his_auth;
582 if (lcp->his_auth || lcp->want_auth) {
583 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
584 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
585 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
586 Auth2Nam(lcp->his_auth, lcp->his_authtype),
587 Auth2Nam(lcp->want_auth, lcp->want_authtype));
588 if (lcp->his_auth == PROTO_PAP)
589 auth_StartReq(&dl->pap);
590 if (lcp->want_auth == PROTO_CHAP)
591 auth_StartReq(&dl->chap.auth);
592 } else
593 datalink_AuthOk(dl);
594 } else if (fp->proto == PROTO_CCP)
595 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
596 }
597
598 static void
datalink_AuthReInit(struct datalink * dl)599 datalink_AuthReInit(struct datalink *dl)
600 {
601 auth_StopTimer(&dl->pap);
602 auth_StopTimer(&dl->chap.auth);
603 chap_ReInit(&dl->chap);
604 }
605
606 void
datalink_GotAuthname(struct datalink * dl,const char * name)607 datalink_GotAuthname(struct datalink *dl, const char *name)
608 {
609 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
610 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
611 }
612
613 void
datalink_NCPUp(struct datalink * dl)614 datalink_NCPUp(struct datalink *dl)
615 {
616 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
617
618 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
619 /* we've authenticated in multilink mode ! */
620 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
621 case MP_LINKSENT:
622 /* We've handed the link off to another ppp (well, we will soon) ! */
623 return;
624 case MP_UP:
625 /* First link in the bundle */
626 auth_Select(dl->bundle, dl->peer.authname);
627 bundle_CalculateBandwidth(dl->bundle);
628 /* FALLTHROUGH */
629 case MP_ADDED:
630 /* We're in multilink mode ! */
631 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
632 bundle_CalculateBandwidth(dl->bundle);
633 break;
634 case MP_FAILED:
635 datalink_AuthNotOk(dl);
636 return;
637 }
638 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
639 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
640 datalink_NewState(dl, DATALINK_OPEN);
641 bundle_CalculateBandwidth(dl->bundle);
642 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
643 return;
644 } else {
645 dl->bundle->ncp.mp.peer = dl->peer;
646 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
647 auth_Select(dl->bundle, dl->peer.authname);
648 }
649
650 if (ccpok) {
651 fsm_Up(&dl->physical->link.ccp.fsm);
652 fsm_Open(&dl->physical->link.ccp.fsm);
653 }
654 datalink_NewState(dl, DATALINK_OPEN);
655 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
656 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
657 }
658
659 void
datalink_CBCPComplete(struct datalink * dl)660 datalink_CBCPComplete(struct datalink *dl)
661 {
662 datalink_NewState(dl, DATALINK_LCP);
663 datalink_AuthReInit(dl);
664 fsm_Close(&dl->physical->link.lcp.fsm);
665 }
666
667 void
datalink_CBCPFailed(struct datalink * dl)668 datalink_CBCPFailed(struct datalink *dl)
669 {
670 cbcp_Down(&dl->cbcp);
671 datalink_CBCPComplete(dl);
672 }
673
674 void
datalink_AuthOk(struct datalink * dl)675 datalink_AuthOk(struct datalink *dl)
676 {
677 if ((dl->physical->link.lcp.his_callback.opmask &
678 CALLBACK_BIT(CALLBACK_CBCP) ||
679 dl->physical->link.lcp.want_callback.opmask &
680 CALLBACK_BIT(CALLBACK_CBCP)) &&
681 !(dl->physical->link.lcp.want_callback.opmask &
682 CALLBACK_BIT(CALLBACK_AUTH))) {
683 /* We must have agreed CBCP if AUTH isn't there any more */
684 datalink_NewState(dl, DATALINK_CBCP);
685 cbcp_Up(&dl->cbcp);
686 } else if (dl->physical->link.lcp.want_callback.opmask) {
687 /* It's not CBCP */
688 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
689 datalink_NewState(dl, DATALINK_LCP);
690 datalink_AuthReInit(dl);
691 fsm_Close(&dl->physical->link.lcp.fsm);
692 } else
693 switch (dl->physical->link.lcp.his_callback.opmask) {
694 case 0:
695 datalink_NCPUp(dl);
696 break;
697
698 case CALLBACK_BIT(CALLBACK_AUTH):
699 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
700 sizeof dl->cbcp.fsm.phone);
701 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
702 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
703 dl->peer.authname);
704 *dl->cbcp.fsm.phone = '\0';
705 } else {
706 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
707 if (ptr)
708 *ptr = '\0'; /* Call back on the first number */
709 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
710 dl->cbcp.fsm.phone);
711 dl->cbcp.required = 1;
712 }
713 dl->cbcp.fsm.delay = 0;
714 datalink_NewState(dl, DATALINK_LCP);
715 datalink_AuthReInit(dl);
716 fsm_Close(&dl->physical->link.lcp.fsm);
717 break;
718
719 case CALLBACK_BIT(CALLBACK_E164):
720 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
721 sizeof dl->cbcp.fsm.phone - 1);
722 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
723 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
724 dl->cbcp.fsm.phone);
725 dl->cbcp.required = 1;
726 dl->cbcp.fsm.delay = 0;
727 datalink_NewState(dl, DATALINK_LCP);
728 datalink_AuthReInit(dl);
729 fsm_Close(&dl->physical->link.lcp.fsm);
730 break;
731
732 default:
733 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
734 dl->name);
735 datalink_NewState(dl, DATALINK_LCP);
736 datalink_AuthReInit(dl);
737 fsm_Close(&dl->physical->link.lcp.fsm);
738 break;
739 }
740 }
741
742 void
datalink_AuthNotOk(struct datalink * dl)743 datalink_AuthNotOk(struct datalink *dl)
744 {
745 datalink_NewState(dl, DATALINK_LCP);
746 datalink_AuthReInit(dl);
747 fsm_Close(&dl->physical->link.lcp.fsm);
748 }
749
750 static void
datalink_LayerDown(void * v,struct fsm * fp)751 datalink_LayerDown(void *v, struct fsm *fp)
752 {
753 /* The given FSM has been told to come down */
754 struct datalink *dl = (struct datalink *)v;
755
756 if (fp->proto == PROTO_LCP) {
757 switch (dl->state) {
758 case DATALINK_OPEN:
759 peerid_Init(&dl->peer);
760 fsm2initial(&dl->physical->link.ccp.fsm);
761 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
762 (*dl->parent->LayerDown)(dl->parent->object, fp);
763 /* FALLTHROUGH (just in case) */
764
765 case DATALINK_CBCP:
766 if (!dl->cbcp.required)
767 cbcp_Down(&dl->cbcp);
768 /* FALLTHROUGH (just in case) */
769
770 case DATALINK_AUTH:
771 timer_Stop(&dl->pap.authtimer);
772 timer_Stop(&dl->chap.auth.authtimer);
773 }
774 datalink_NewState(dl, DATALINK_LCP);
775 datalink_AuthReInit(dl);
776 }
777 }
778
779 static void
datalink_LayerFinish(void * v,struct fsm * fp)780 datalink_LayerFinish(void *v, struct fsm *fp)
781 {
782 /* The given fsm is now down */
783 struct datalink *dl = (struct datalink *)v;
784
785 if (fp->proto == PROTO_LCP) {
786 fsm2initial(fp);
787 (*dl->parent->LayerFinish)(dl->parent->object, fp);
788 datalink_ComeDown(dl, CLOSE_NORMAL);
789 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
790 fsm_Open(fp); /* CCP goes to ST_STOPPED */
791 }
792
793 struct datalink *
datalink_Create(const char * name,struct bundle * bundle,int type)794 datalink_Create(const char *name, struct bundle *bundle, int type)
795 {
796 struct datalink *dl;
797
798 dl = (struct datalink *)malloc(sizeof(struct datalink));
799 if (dl == NULL)
800 return dl;
801
802 dl->desc.type = DATALINK_DESCRIPTOR;
803 dl->desc.UpdateSet = datalink_UpdateSet;
804 dl->desc.IsSet = datalink_IsSet;
805 dl->desc.Read = datalink_Read;
806 dl->desc.Write = datalink_Write;
807
808 dl->state = DATALINK_CLOSED;
809
810 *dl->cfg.script.dial = '\0';
811 *dl->cfg.script.login = '\0';
812 *dl->cfg.script.logout = '\0';
813 *dl->cfg.script.hangup = '\0';
814 *dl->cfg.phone.list = '\0';
815 *dl->phone.list = '\0';
816 dl->phone.next = NULL;
817 dl->phone.alt = NULL;
818 dl->phone.chosen = "N/A";
819 dl->stayonline = 0;
820 dl->script.run = 1;
821 dl->script.packetmode = 1;
822 mp_linkInit(&dl->mp);
823
824 dl->bundle = bundle;
825 dl->next = NULL;
826
827 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
828
829 dl->dial.tries = 0;
830 dl->cfg.dial.max = 1;
831 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
832 dl->cfg.dial.timeout = DIAL_TIMEOUT;
833 dl->cfg.dial.inc = 0;
834 dl->cfg.dial.maxinc = 10;
835
836 dl->reconnect_tries = 0;
837 dl->cfg.reconnect.max = 0;
838 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
839
840 dl->cfg.callback.opmask = 0;
841 dl->cfg.cbcp.delay = 0;
842 *dl->cfg.cbcp.phone = '\0';
843 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
844
845 dl->name = strdup(name);
846 peerid_Init(&dl->peer);
847 dl->parent = &bundle->fsm;
848 dl->fsmp.LayerStart = datalink_LayerStart;
849 dl->fsmp.LayerUp = datalink_LayerUp;
850 dl->fsmp.LayerDown = datalink_LayerDown;
851 dl->fsmp.LayerFinish = datalink_LayerFinish;
852 dl->fsmp.object = dl;
853
854 if ((dl->physical = physical_Create(dl, type)) == NULL) {
855 free(dl->name);
856 free(dl);
857 return NULL;
858 }
859
860 pap_Init(&dl->pap, dl->physical);
861 chap_Init(&dl->chap, dl->physical);
862 cbcp_Init(&dl->cbcp, dl->physical);
863
864 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
865 chat_Init(&dl->chat, dl->physical);
866
867 log_Printf(LogPHASE, "%s: Created in %s state\n",
868 dl->name, datalink_State(dl));
869
870 return dl;
871 }
872
873 struct datalink *
datalink_Clone(struct datalink * odl,const char * name)874 datalink_Clone(struct datalink *odl, const char *name)
875 {
876 struct datalink *dl;
877
878 dl = (struct datalink *)malloc(sizeof(struct datalink));
879 if (dl == NULL)
880 return dl;
881
882 dl->desc.type = DATALINK_DESCRIPTOR;
883 dl->desc.UpdateSet = datalink_UpdateSet;
884 dl->desc.IsSet = datalink_IsSet;
885 dl->desc.Read = datalink_Read;
886 dl->desc.Write = datalink_Write;
887
888 dl->state = DATALINK_CLOSED;
889
890 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
891 mp_linkInit(&dl->mp);
892 *dl->phone.list = '\0';
893 dl->phone.next = NULL;
894 dl->phone.alt = NULL;
895 dl->phone.chosen = "N/A";
896 dl->bundle = odl->bundle;
897 dl->next = NULL;
898 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
899 dl->dial.tries = 0;
900 dl->reconnect_tries = 0;
901 dl->name = strdup(name);
902 peerid_Init(&dl->peer);
903 dl->parent = odl->parent;
904 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
905 dl->fsmp.object = dl;
906
907 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
908 free(dl->name);
909 free(dl);
910 return NULL;
911 }
912 pap_Init(&dl->pap, dl->physical);
913 dl->pap.cfg = odl->pap.cfg;
914
915 chap_Init(&dl->chap, dl->physical);
916 dl->chap.auth.cfg = odl->chap.auth.cfg;
917
918 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
919 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
920 sizeof dl->physical->link.lcp.cfg);
921 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
922 sizeof dl->physical->link.ccp.cfg);
923 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
924 sizeof dl->physical->async.cfg);
925
926 cbcp_Init(&dl->cbcp, dl->physical);
927
928 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
929 chat_Init(&dl->chat, dl->physical);
930
931 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
932 dl->name, datalink_State(dl));
933
934 return dl;
935 }
936
937 struct datalink *
datalink_Destroy(struct datalink * dl)938 datalink_Destroy(struct datalink *dl)
939 {
940 struct datalink *result;
941
942 if (dl->state != DATALINK_CLOSED) {
943 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
944 datalink_State(dl));
945 switch (dl->state) {
946 case DATALINK_HANGUP:
947 case DATALINK_DIAL:
948 case DATALINK_LOGIN:
949 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
950 break;
951 }
952 }
953
954 chat_Destroy(&dl->chat);
955 timer_Stop(&dl->dial.timer);
956 result = dl->next;
957 physical_Destroy(dl->physical);
958 free(dl->name);
959 free(dl);
960
961 return result;
962 }
963
964 void
datalink_Up(struct datalink * dl,int runscripts,int packetmode)965 datalink_Up(struct datalink *dl, int runscripts, int packetmode)
966 {
967 if (!Enabled(dl->bundle, OPT_FORCE_SCRIPTS) &&
968 (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)))
969 /* Ignore scripts */
970 runscripts = 0;
971
972 switch (dl->state) {
973 case DATALINK_CLOSED:
974 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
975 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
976 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
977 datalink_NewState(dl, DATALINK_OPENING);
978 dl->reconnect_tries =
979 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
980 dl->dial.tries = dl->cfg.dial.max;
981 dl->script.run = runscripts;
982 dl->script.packetmode = packetmode;
983 break;
984
985 case DATALINK_OPENING:
986 if (!dl->script.run && runscripts)
987 dl->script.run = 1;
988 /* FALLTHROUGH */
989
990 case DATALINK_DIAL:
991 case DATALINK_LOGIN:
992 case DATALINK_READY:
993 if (!dl->script.packetmode && packetmode) {
994 dl->script.packetmode = 1;
995 if (dl->state == DATALINK_READY) {
996 dl->script.run = 0;
997 datalink_NewState(dl, DATALINK_CARRIER);
998 }
999 }
1000 break;
1001 }
1002 }
1003
1004 void
datalink_Close(struct datalink * dl,int how)1005 datalink_Close(struct datalink *dl, int how)
1006 {
1007 /* Please close */
1008 switch (dl->state) {
1009 case DATALINK_OPEN:
1010 peerid_Init(&dl->peer);
1011 fsm2initial(&dl->physical->link.ccp.fsm);
1012 /* FALLTHROUGH */
1013
1014 case DATALINK_CBCP:
1015 case DATALINK_AUTH:
1016 case DATALINK_LCP:
1017 datalink_AuthReInit(dl);
1018 if (how == CLOSE_LCP)
1019 datalink_DontHangup(dl);
1020 else if (how == CLOSE_STAYDOWN)
1021 datalink_StayDown(dl);
1022 fsm_Close(&dl->physical->link.lcp.fsm);
1023 break;
1024
1025 default:
1026 datalink_ComeDown(dl, how);
1027 }
1028 }
1029
1030 void
datalink_Down(struct datalink * dl,int how)1031 datalink_Down(struct datalink *dl, int how)
1032 {
1033 /* Carrier is lost */
1034 switch (dl->state) {
1035 case DATALINK_OPEN:
1036 peerid_Init(&dl->peer);
1037 fsm2initial(&dl->physical->link.ccp.fsm);
1038 /* FALLTHROUGH */
1039
1040 case DATALINK_CBCP:
1041 case DATALINK_AUTH:
1042 case DATALINK_LCP:
1043 fsm2initial(&dl->physical->link.lcp.fsm);
1044 if (dl->state == DATALINK_OPENING)
1045 return; /* we're doing a callback... */
1046 /* FALLTHROUGH */
1047
1048 default:
1049 datalink_ComeDown(dl, how);
1050 }
1051 }
1052
1053 void
datalink_StayDown(struct datalink * dl)1054 datalink_StayDown(struct datalink *dl)
1055 {
1056 dl->dial.tries = -1;
1057 dl->reconnect_tries = 0;
1058 dl->stayonline = 0;
1059 }
1060
1061 void
datalink_DontHangup(struct datalink * dl)1062 datalink_DontHangup(struct datalink *dl)
1063 {
1064 dl->dial.tries = -1;
1065 dl->reconnect_tries = 0;
1066 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
1067 }
1068
1069 int
datalink_Show(struct cmdargs const * arg)1070 datalink_Show(struct cmdargs const *arg)
1071 {
1072 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1073 prompt_Printf(arg->prompt, " State: %s\n",
1074 datalink_State(arg->cx));
1075 prompt_Printf(arg->prompt, " Peer name: ");
1076 if (*arg->cx->peer.authname)
1077 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1078 else if (arg->cx->state == DATALINK_OPEN)
1079 prompt_Printf(arg->prompt, "None requested\n");
1080 else
1081 prompt_Printf(arg->prompt, "N/A\n");
1082 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1083 mp_Enddisc(arg->cx->peer.enddisc.class,
1084 arg->cx->peer.enddisc.address,
1085 arg->cx->peer.enddisc.len));
1086
1087 prompt_Printf(arg->prompt, "\nDefaults:\n");
1088 prompt_Printf(arg->prompt, " Phone List: %s\n",
1089 arg->cx->cfg.phone.list);
1090 if (arg->cx->cfg.dial.max)
1091 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1092 arg->cx->cfg.dial.max);
1093 else
1094 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1095 if (arg->cx->cfg.dial.next_timeout >= 0)
1096 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1097 else
1098 prompt_Printf(arg->prompt, "random/");
1099 if (arg->cx->cfg.dial.timeout >= 0)
1100 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1101 else
1102 prompt_Printf(arg->prompt, "random\n");
1103 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1104 arg->cx->cfg.reconnect.max);
1105 if (arg->cx->cfg.reconnect.timeout > 0)
1106 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1107 else
1108 prompt_Printf(arg->prompt, "random\n");
1109 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1110 PHYS_DIRECT ? "accepted: " : "requested:");
1111 if (!arg->cx->cfg.callback.opmask)
1112 prompt_Printf(arg->prompt, "none\n");
1113 else {
1114 int comma = 0;
1115
1116 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1117 prompt_Printf(arg->prompt, "none");
1118 comma = 1;
1119 }
1120 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1121 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1122 comma = 1;
1123 }
1124 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1125 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1126 if (arg->cx->physical->type != PHYS_DIRECT)
1127 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1128 comma = 1;
1129 }
1130 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1131 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1132 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1133 arg->cx->cfg.cbcp.delay);
1134 prompt_Printf(arg->prompt, " phone: ");
1135 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1136 if (arg->cx->physical->type & PHYS_DIRECT)
1137 prompt_Printf(arg->prompt, "Caller decides\n");
1138 else
1139 prompt_Printf(arg->prompt, "Dialback server decides\n");
1140 } else
1141 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1142 prompt_Printf(arg->prompt, " timeout: %lds\n",
1143 arg->cx->cfg.cbcp.fsmretry);
1144 } else
1145 prompt_Printf(arg->prompt, "\n");
1146 }
1147
1148 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1149 arg->cx->cfg.script.dial);
1150 prompt_Printf(arg->prompt, " Login Script: %s\n",
1151 arg->cx->cfg.script.login);
1152 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1153 arg->cx->cfg.script.logout);
1154 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1155 arg->cx->cfg.script.hangup);
1156 return 0;
1157 }
1158
1159 int
datalink_SetReconnect(struct cmdargs const * arg)1160 datalink_SetReconnect(struct cmdargs const *arg)
1161 {
1162 if (arg->argc == arg->argn+2) {
1163 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1164 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1165 return 0;
1166 }
1167 return -1;
1168 }
1169
1170 int
datalink_SetRedial(struct cmdargs const * arg)1171 datalink_SetRedial(struct cmdargs const *arg)
1172 {
1173 const char *sep, *osep;
1174 int timeout, inc, maxinc, tries;
1175
1176 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1177 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1178 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1179 arg->cx->cfg.dial.timeout = -1;
1180 randinit();
1181 } else {
1182 timeout = atoi(arg->argv[arg->argn]);
1183
1184 if (timeout >= 0)
1185 arg->cx->cfg.dial.timeout = timeout;
1186 else {
1187 log_Printf(LogWARN, "Invalid redial timeout\n");
1188 return -1;
1189 }
1190 }
1191
1192 sep = strchr(arg->argv[arg->argn], '+');
1193 if (sep) {
1194 inc = atoi(++sep);
1195 osep = sep;
1196 if (inc >= 0)
1197 arg->cx->cfg.dial.inc = inc;
1198 else {
1199 log_Printf(LogWARN, "Invalid timeout increment\n");
1200 return -1;
1201 }
1202 sep = strchr(sep, '-');
1203 if (sep) {
1204 maxinc = atoi(++sep);
1205 if (maxinc >= 0)
1206 arg->cx->cfg.dial.maxinc = maxinc;
1207 else {
1208 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1209 return -1;
1210 }
1211 } else {
1212 /* Default timeout increment */
1213 arg->cx->cfg.dial.maxinc = 10;
1214 sep = osep;
1215 }
1216 } else {
1217 /* Default timeout increment & max increment */
1218 arg->cx->cfg.dial.inc = 0;
1219 arg->cx->cfg.dial.maxinc = 10;
1220 sep = arg->argv[arg->argn];
1221 }
1222
1223 sep = strchr(sep, '.');
1224 if (sep) {
1225 if (strcasecmp(++sep, "random") == 0) {
1226 arg->cx->cfg.dial.next_timeout = -1;
1227 randinit();
1228 } else {
1229 timeout = atoi(sep);
1230 if (timeout >= 0)
1231 arg->cx->cfg.dial.next_timeout = timeout;
1232 else {
1233 log_Printf(LogWARN, "Invalid next redial timeout\n");
1234 return -1;
1235 }
1236 }
1237 } else
1238 /* Default next timeout */
1239 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1240
1241 if (arg->argc == arg->argn+2) {
1242 tries = atoi(arg->argv[arg->argn+1]);
1243
1244 if (tries >= 0) {
1245 arg->cx->cfg.dial.max = tries;
1246 } else {
1247 log_Printf(LogWARN, "Invalid retry value\n");
1248 return 1;
1249 }
1250 }
1251 return 0;
1252 }
1253
1254 return -1;
1255 }
1256
1257 static const char * const states[] = {
1258 "closed",
1259 "opening",
1260 "hangup",
1261 "dial",
1262 "carrier",
1263 "logout",
1264 "login",
1265 "ready",
1266 "lcp",
1267 "auth",
1268 "cbcp",
1269 "open"
1270 };
1271
1272 const char *
datalink_State(struct datalink * dl)1273 datalink_State(struct datalink *dl)
1274 {
1275 if (dl->state >= sizeof states / sizeof states[0])
1276 return "unknown";
1277 return states[dl->state];
1278 }
1279
1280 static void
datalink_NewState(struct datalink * dl,unsigned state)1281 datalink_NewState(struct datalink *dl, unsigned state)
1282 {
1283 if (state != dl->state) {
1284 if (state < sizeof states / sizeof states[0]) {
1285 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1286 states[state]);
1287 dl->state = state;
1288 } else
1289 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1290 }
1291 }
1292
1293 struct datalink *
iov2datalink(struct bundle * bundle,struct iovec * iov,int * niov,int maxiov,int fd,int * auxfd,int * nauxfd)1294 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1295 int fd, int *auxfd, int *nauxfd)
1296 {
1297 struct datalink *dl, *cdl;
1298 struct fsm_retry copy;
1299 char *oname, *pname;
1300
1301 dl = (struct datalink *)iov[(*niov)++].iov_base;
1302 dl->name = iov[*niov].iov_base;
1303
1304 if (dl->name[DATALINK_MAXNAME-1]) {
1305 dl->name[DATALINK_MAXNAME-1] = '\0';
1306 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1307 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1308 }
1309
1310 /* Make sure the name is unique ! */
1311 oname = NULL;
1312 do {
1313 for (cdl = bundle->links; cdl; cdl = cdl->next)
1314 if (!strcasecmp(dl->name, cdl->name)) {
1315 if ((pname = datalink_NextName(dl)) == NULL) {
1316 for ((*niov)--; *niov < maxiov; (*niov)++)
1317 free(iov[*niov].iov_base);
1318 return NULL;
1319 } else if (oname)
1320 free(pname);
1321 else
1322 oname = pname;
1323 break; /* Keep renaming 'till we have no conflicts */
1324 }
1325 } while (cdl);
1326
1327 if (oname) {
1328 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1329 free(oname);
1330 } else {
1331 dl->name = strdup(dl->name);
1332 free(iov[*niov].iov_base);
1333 }
1334 (*niov)++;
1335
1336 dl->desc.type = DATALINK_DESCRIPTOR;
1337 dl->desc.UpdateSet = datalink_UpdateSet;
1338 dl->desc.IsSet = datalink_IsSet;
1339 dl->desc.Read = datalink_Read;
1340 dl->desc.Write = datalink_Write;
1341
1342 mp_linkInit(&dl->mp);
1343 *dl->phone.list = '\0';
1344 dl->phone.next = NULL;
1345 dl->phone.alt = NULL;
1346 dl->phone.chosen = "N/A";
1347
1348 dl->bundle = bundle;
1349 dl->next = NULL;
1350 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1351 dl->dial.tries = 0;
1352 dl->reconnect_tries = 0;
1353 dl->parent = &bundle->fsm;
1354 dl->fsmp.LayerStart = datalink_LayerStart;
1355 dl->fsmp.LayerUp = datalink_LayerUp;
1356 dl->fsmp.LayerDown = datalink_LayerDown;
1357 dl->fsmp.LayerFinish = datalink_LayerFinish;
1358 dl->fsmp.object = dl;
1359
1360 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1361
1362 if (!dl->physical) {
1363 free(dl->name);
1364 free(dl);
1365 dl = NULL;
1366 } else {
1367 copy = dl->pap.cfg.fsm;
1368 pap_Init(&dl->pap, dl->physical);
1369 dl->pap.cfg.fsm = copy;
1370
1371 copy = dl->chap.auth.cfg.fsm;
1372 chap_Init(&dl->chap, dl->physical);
1373 dl->chap.auth.cfg.fsm = copy;
1374
1375 cbcp_Init(&dl->cbcp, dl->physical);
1376
1377 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1378 chat_Init(&dl->chat, dl->physical);
1379
1380 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1381 dl->name, datalink_State(dl));
1382 }
1383
1384 return dl;
1385 }
1386
1387 int
datalink2iov(struct datalink * dl,struct iovec * iov,int * niov,int maxiov,int * auxfd,int * nauxfd)1388 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1389 int *auxfd, int *nauxfd)
1390 {
1391 /* If `dl' is NULL, we're allocating before a Fromiov() */
1392 int link_fd;
1393
1394 if (dl) {
1395 timer_Stop(&dl->dial.timer);
1396 /* The following is purely for the sake of paranoia */
1397 cbcp_Down(&dl->cbcp);
1398 timer_Stop(&dl->pap.authtimer);
1399 timer_Stop(&dl->chap.auth.authtimer);
1400 }
1401
1402 if (*niov >= maxiov - 1) {
1403 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1404 if (dl) {
1405 free(dl->name);
1406 free(dl);
1407 }
1408 return -1;
1409 }
1410
1411 iov[*niov].iov_base = (void *)dl;
1412 iov[(*niov)++].iov_len = sizeof *dl;
1413 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1414 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1415
1416 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1417 nauxfd);
1418
1419 if (link_fd == -1 && dl) {
1420 free(dl->name);
1421 free(dl);
1422 }
1423
1424 return link_fd;
1425 }
1426
1427 void
datalink_Rename(struct datalink * dl,const char * name)1428 datalink_Rename(struct datalink *dl, const char *name)
1429 {
1430 free(dl->name);
1431 dl->physical->link.name = dl->name = strdup(name);
1432 }
1433
1434 static char *
datalink_NextName(struct datalink * dl)1435 datalink_NextName(struct datalink *dl)
1436 {
1437 int f, n;
1438 char *name, *oname;
1439
1440 n = strlen(dl->name);
1441 if ((name = (char *)malloc(n+3)) == NULL) {
1442 log_Printf(LogERROR, "datalink_NextName: Out of memory !\n");
1443 return NULL;
1444 }
1445 for (f = n - 1; f >= 0; f--)
1446 if (!isdigit(dl->name[f]))
1447 break;
1448 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1449 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1450 oname = dl->name;
1451 dl->name = name;
1452 /* our physical link name isn't updated (it probably isn't created yet) */
1453 return oname;
1454 }
1455
1456 int
datalink_SetMode(struct datalink * dl,int mode)1457 datalink_SetMode(struct datalink *dl, int mode)
1458 {
1459 if (!physical_SetMode(dl->physical, mode))
1460 return 0;
1461 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1462 dl->script.run = 0;
1463 if (dl->physical->type == PHYS_DIRECT)
1464 dl->reconnect_tries = 0;
1465 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1466 dl->state <= DATALINK_READY)
1467 datalink_Up(dl, 1, 1);
1468 return 1;
1469 }
1470
1471 int
datalink_GetDialTimeout(struct datalink * dl)1472 datalink_GetDialTimeout(struct datalink *dl)
1473 {
1474 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1475
1476 if (dl->dial.incs < dl->cfg.dial.maxinc)
1477 dl->dial.incs++;
1478
1479 return result;
1480 }
1481