datalink.c revision 38200 
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 *	$Id: datalink.c,v 1.17 1998/08/07 18:42:48 brian Exp $
27 */
28
29#include <sys/types.h>
30#include <netinet/in.h>
31#include <netinet/in_systm.h>
32#include <netinet/ip.h>
33#include <sys/un.h>
34
35#include <ctype.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <sys/uio.h>
40#include <termios.h>
41
42#include "mbuf.h"
43#include "log.h"
44#include "defs.h"
45#include "timer.h"
46#include "fsm.h"
47#include "lcp.h"
48#include "descriptor.h"
49#include "lqr.h"
50#include "hdlc.h"
51#include "async.h"
52#include "throughput.h"
53#include "ccp.h"
54#include "link.h"
55#include "physical.h"
56#include "iplist.h"
57#include "slcompress.h"
58#include "ipcp.h"
59#include "filter.h"
60#include "mp.h"
61#include "bundle.h"
62#include "chat.h"
63#include "auth.h"
64#include "modem.h"
65#include "prompt.h"
66#include "lcpproto.h"
67#include "pap.h"
68#include "chap.h"
69#include "command.h"
70#include "cbcp.h"
71#include "datalink.h"
72
73static void datalink_LoginDone(struct datalink *);
74static void datalink_NewState(struct datalink *, int);
75
76static void
77datalink_OpenTimeout(void *v)
78{
79  struct datalink *dl = (struct datalink *)v;
80
81  timer_Stop(&dl->dial_timer);
82  if (dl->state == DATALINK_OPENING)
83    log_Printf(LogPHASE, "%s: Redial timer expired.\n", dl->name);
84}
85
86static void
87datalink_StartDialTimer(struct datalink *dl, int Timeout)
88{
89  timer_Stop(&dl->dial_timer);
90
91  if (Timeout) {
92    if (Timeout > 0)
93      dl->dial_timer.load = Timeout * SECTICKS;
94    else
95      dl->dial_timer.load = (random() % DIAL_TIMEOUT) * SECTICKS;
96    dl->dial_timer.func = datalink_OpenTimeout;
97    dl->dial_timer.name = "dial";
98    dl->dial_timer.arg = dl;
99    timer_Start(&dl->dial_timer);
100    if (dl->state == DATALINK_OPENING)
101      log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
102                dl->name, Timeout);
103  }
104}
105
106static void
107datalink_HangupDone(struct datalink *dl)
108{
109  if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
110      physical_GetFD(dl->physical) != -1) {
111    /* Don't close our modem if the link is dedicated */
112    datalink_LoginDone(dl);
113    return;
114  }
115
116  modem_Close(dl->physical);
117  dl->phone.chosen = "N/A";
118
119  if (dl->cbcp.required) {
120    log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
121    dl->cfg.callback.opmask = 0;
122    strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
123            sizeof dl->cfg.phone.list - 1);
124    dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
125    dl->phone.alt = dl->phone.next = NULL;
126    dl->reconnect_tries = dl->cfg.reconnect.max;
127    dl->dial_tries = dl->cfg.dial.max;
128    dl->script.run = 1;
129    dl->script.packetmode = 1;
130    if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
131      log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
132    bundle_LinksRemoved(dl->bundle);
133    if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
134      dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
135    datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
136    cbcp_Down(&dl->cbcp);
137    datalink_NewState(dl, DATALINK_OPENING);
138  } else if (dl->bundle->CleaningUp ||
139      (dl->physical->type == PHYS_DIRECT) ||
140      ((!dl->dial_tries || (dl->dial_tries < 0 && !dl->reconnect_tries)) &&
141       !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
142    datalink_NewState(dl, DATALINK_CLOSED);
143    dl->dial_tries = -1;
144    dl->reconnect_tries = 0;
145    bundle_LinkClosed(dl->bundle, dl);
146    if (!dl->bundle->CleaningUp)
147      datalink_StartDialTimer(dl, dl->cfg.dial.timeout);
148  } else {
149    datalink_NewState(dl, DATALINK_OPENING);
150    if (dl->dial_tries < 0) {
151      datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
152      dl->dial_tries = dl->cfg.dial.max;
153      dl->reconnect_tries--;
154    } else {
155      if (dl->phone.next == NULL)
156        datalink_StartDialTimer(dl, dl->cfg.dial.timeout);
157      else
158        datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
159    }
160  }
161}
162
163static const char *
164datalink_ChoosePhoneNumber(struct datalink *dl)
165{
166  char *phone;
167
168  if (dl->phone.alt == NULL) {
169    if (dl->phone.next == NULL) {
170      strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
171      dl->phone.list[sizeof dl->phone.list - 1] = '\0';
172      dl->phone.next = dl->phone.list;
173    }
174    dl->phone.alt = strsep(&dl->phone.next, ":");
175  }
176  phone = strsep(&dl->phone.alt, "|");
177  dl->phone.chosen = *phone ? phone : "[NONE]";
178  if (*phone)
179    log_Printf(LogPHASE, "Phone: %s\n", phone);
180  return phone;
181}
182
183static void
184datalink_LoginDone(struct datalink *dl)
185{
186  if (!dl->script.packetmode) {
187    dl->dial_tries = -1;
188    datalink_NewState(dl, DATALINK_READY);
189  } else if (modem_Raw(dl->physical, dl->bundle) < 0) {
190    dl->dial_tries = 0;
191    log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
192    if (dl->script.run) {
193      datalink_NewState(dl, DATALINK_HANGUP);
194      modem_Offline(dl->physical);
195      chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL);
196    } else {
197      timer_Stop(&dl->physical->Timer);
198      if (dl->physical->type == PHYS_DEDICATED)
199        /* force a redial timeout */
200        modem_Close(dl->physical);
201      datalink_HangupDone(dl);
202    }
203  } else {
204    dl->dial_tries = -1;
205
206    hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
207    async_Init(&dl->physical->async);
208
209    lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
210              0 : dl->physical->link.lcp.cfg.openmode);
211    ccp_Setup(&dl->physical->link.ccp);
212
213    datalink_NewState(dl, DATALINK_LCP);
214    fsm_Up(&dl->physical->link.lcp.fsm);
215    fsm_Open(&dl->physical->link.lcp.fsm);
216  }
217}
218
219static int
220datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e,
221                   int *n)
222{
223  struct datalink *dl = descriptor2datalink(d);
224  int result;
225
226  result = 0;
227  switch (dl->state) {
228    case DATALINK_CLOSED:
229      if ((dl->physical->type &
230           (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|PHYS_DDIAL)) &&
231          !bundle_IsDead(dl->bundle))
232        /*
233         * Our first time in - DEDICATED & DDIAL never come down, and
234         * DIRECT & BACKGROUND get deleted when they enter DATALINK_CLOSED.
235         * Go to DATALINK_OPENING via datalink_Up() and fall through.
236         */
237        datalink_Up(dl, 1, 1);
238      else
239        break;
240      /* fall through */
241
242    case DATALINK_OPENING:
243      if (dl->dial_timer.state != TIMER_RUNNING) {
244        if (--dl->dial_tries < 0)
245          dl->dial_tries = 0;
246        if (modem_Open(dl->physical, dl->bundle) >= 0) {
247          log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
248                           "Type `~?' for help\r\n", dl->name,
249                           dl->physical->name.full);
250          if (dl->script.run) {
251            datalink_NewState(dl, DATALINK_DIAL);
252            chat_Init(&dl->chat, dl->physical, dl->cfg.script.dial, 1,
253                      datalink_ChoosePhoneNumber(dl));
254            if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
255                dl->cfg.dial.max)
256              log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
257                        dl->name, dl->cfg.dial.max - dl->dial_tries,
258                        dl->cfg.dial.max);
259            return datalink_UpdateSet(d, r, w, e, n);
260          } else
261            datalink_LoginDone(dl);
262        } else {
263          if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
264              dl->cfg.dial.max)
265            log_Printf(LogCHAT, "Failed to open modem (attempt %u of %d)\n",
266                       dl->cfg.dial.max - dl->dial_tries, dl->cfg.dial.max);
267          else
268            log_Printf(LogCHAT, "Failed to open modem\n");
269
270          if (dl->bundle->CleaningUp ||
271              (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
272               dl->cfg.dial.max && dl->dial_tries == 0)) {
273            datalink_NewState(dl, DATALINK_CLOSED);
274            dl->reconnect_tries = 0;
275            dl->dial_tries = -1;
276            log_WritePrompts(dl, "Failed to open %s\n",
277                             dl->physical->name.full);
278            bundle_LinkClosed(dl->bundle, dl);
279          }
280          if (!dl->bundle->CleaningUp) {
281            log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
282                             dl->physical->name.full, dl->cfg.dial.timeout);
283            datalink_StartDialTimer(dl, dl->cfg.dial.timeout);
284          }
285        }
286      }
287      break;
288
289    case DATALINK_HANGUP:
290    case DATALINK_DIAL:
291    case DATALINK_LOGIN:
292      result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
293      switch (dl->chat.state) {
294        case CHAT_DONE:
295          /* script succeeded */
296          chat_Destroy(&dl->chat);
297          switch(dl->state) {
298            case DATALINK_HANGUP:
299              datalink_HangupDone(dl);
300              break;
301            case DATALINK_DIAL:
302              datalink_NewState(dl, DATALINK_LOGIN);
303              chat_Init(&dl->chat, dl->physical, dl->cfg.script.login, 0, NULL);
304              return datalink_UpdateSet(d, r, w, e, n);
305            case DATALINK_LOGIN:
306              datalink_LoginDone(dl);
307              break;
308          }
309          break;
310        case CHAT_FAILED:
311          /* Going down - script failed */
312          log_Printf(LogWARN, "Chat script failed\n");
313          chat_Destroy(&dl->chat);
314          switch(dl->state) {
315            case DATALINK_HANGUP:
316              datalink_HangupDone(dl);
317              break;
318            case DATALINK_DIAL:
319            case DATALINK_LOGIN:
320              datalink_NewState(dl, DATALINK_HANGUP);
321              modem_Offline(dl->physical);	/* Is this required ? */
322              chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL);
323              return datalink_UpdateSet(d, r, w, e, n);
324          }
325          break;
326      }
327      break;
328
329    case DATALINK_READY:
330    case DATALINK_LCP:
331    case DATALINK_AUTH:
332    case DATALINK_CBCP:
333    case DATALINK_OPEN:
334      result = descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
335      break;
336  }
337  return result;
338}
339
340int
341datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
342{
343  return physical_RemoveFromSet(dl->physical, r, w, e);
344}
345
346static int
347datalink_IsSet(struct descriptor *d, const fd_set *fdset)
348{
349  struct datalink *dl = descriptor2datalink(d);
350
351  switch (dl->state) {
352    case DATALINK_CLOSED:
353    case DATALINK_OPENING:
354      break;
355
356    case DATALINK_HANGUP:
357    case DATALINK_DIAL:
358    case DATALINK_LOGIN:
359      return descriptor_IsSet(&dl->chat.desc, fdset);
360
361    case DATALINK_READY:
362    case DATALINK_LCP:
363    case DATALINK_AUTH:
364    case DATALINK_CBCP:
365    case DATALINK_OPEN:
366      return descriptor_IsSet(&dl->physical->desc, fdset);
367  }
368  return 0;
369}
370
371static void
372datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
373{
374  struct datalink *dl = descriptor2datalink(d);
375
376  switch (dl->state) {
377    case DATALINK_CLOSED:
378    case DATALINK_OPENING:
379      break;
380
381    case DATALINK_HANGUP:
382    case DATALINK_DIAL:
383    case DATALINK_LOGIN:
384      descriptor_Read(&dl->chat.desc, bundle, fdset);
385      break;
386
387    case DATALINK_READY:
388    case DATALINK_LCP:
389    case DATALINK_AUTH:
390    case DATALINK_CBCP:
391    case DATALINK_OPEN:
392      descriptor_Read(&dl->physical->desc, bundle, fdset);
393      break;
394  }
395}
396
397static int
398datalink_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
399{
400  struct datalink *dl = descriptor2datalink(d);
401  int result = 0;
402
403  switch (dl->state) {
404    case DATALINK_CLOSED:
405    case DATALINK_OPENING:
406      break;
407
408    case DATALINK_HANGUP:
409    case DATALINK_DIAL:
410    case DATALINK_LOGIN:
411      result = descriptor_Write(&dl->chat.desc, bundle, fdset);
412      break;
413
414    case DATALINK_READY:
415    case DATALINK_LCP:
416    case DATALINK_AUTH:
417    case DATALINK_CBCP:
418    case DATALINK_OPEN:
419      result = descriptor_Write(&dl->physical->desc, bundle, fdset);
420      break;
421  }
422
423  return result;
424}
425
426static void
427datalink_ComeDown(struct datalink *dl, int how)
428{
429  if (how != CLOSE_NORMAL) {
430    dl->dial_tries = -1;
431    dl->reconnect_tries = 0;
432    if (dl->state >= DATALINK_READY && how == CLOSE_LCP)
433      dl->stayonline = 1;
434  }
435
436  if (dl->state >= DATALINK_READY && dl->stayonline) {
437    dl->stayonline = 0;
438    timer_Stop(&dl->physical->Timer);
439    datalink_NewState(dl, DATALINK_READY);
440  } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
441    modem_Offline(dl->physical);
442    if (dl->script.run && dl->state != DATALINK_OPENING) {
443      datalink_NewState(dl, DATALINK_HANGUP);
444      chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL);
445    } else
446      datalink_HangupDone(dl);
447  }
448}
449
450static void
451datalink_LayerStart(void *v, struct fsm *fp)
452{
453  /* The given FSM is about to start up ! */
454  struct datalink *dl = (struct datalink *)v;
455
456  if (fp->proto == PROTO_LCP)
457    (*dl->parent->LayerStart)(dl->parent->object, fp);
458}
459
460static void
461datalink_LayerUp(void *v, struct fsm *fp)
462{
463  /* The given fsm is now up */
464  struct datalink *dl = (struct datalink *)v;
465
466  if (fp->proto == PROTO_LCP) {
467    datalink_GotAuthname(dl, "", 0);
468    dl->physical->link.lcp.auth_ineed = dl->physical->link.lcp.want_auth;
469    dl->physical->link.lcp.auth_iwait = dl->physical->link.lcp.his_auth;
470    if (dl->physical->link.lcp.his_auth || dl->physical->link.lcp.want_auth) {
471      if (bundle_Phase(dl->bundle) == PHASE_ESTABLISH)
472        bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
473      log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
474                Auth2Nam(dl->physical->link.lcp.his_auth),
475                Auth2Nam(dl->physical->link.lcp.want_auth));
476      if (dl->physical->link.lcp.his_auth == PROTO_PAP)
477        auth_StartChallenge(&dl->pap, dl->physical, pap_SendChallenge);
478      if (dl->physical->link.lcp.want_auth == PROTO_CHAP)
479        auth_StartChallenge(&dl->chap.auth, dl->physical, chap_SendChallenge);
480    } else
481      datalink_AuthOk(dl);
482  }
483}
484
485void
486datalink_GotAuthname(struct datalink *dl, const char *name, int len)
487{
488  if (len >= sizeof dl->peer.authname)
489    len = sizeof dl->peer.authname - 1;
490  strncpy(dl->peer.authname, name, len);
491  dl->peer.authname[len] = '\0';
492}
493
494void
495datalink_NCPUp(struct datalink *dl)
496{
497  int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
498
499  if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
500    /* we've authenticated in multilink mode ! */
501    switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
502      case MP_LINKSENT:
503        /* We've handed the link off to another ppp (well, we will soon) ! */
504        return;
505      case MP_UP:
506        /* First link in the bundle */
507        auth_Select(dl->bundle, dl->peer.authname);
508        /* fall through */
509      case MP_ADDED:
510        /* We're in multilink mode ! */
511        dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE;	/* override */
512        break;
513      case MP_FAILED:
514        datalink_AuthNotOk(dl);
515        return;
516    }
517  } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
518    log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
519    datalink_NewState(dl, DATALINK_OPEN);
520    (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
521    return;
522  } else {
523    dl->bundle->ncp.mp.peer = dl->peer;
524    ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link);
525    auth_Select(dl->bundle, dl->peer.authname);
526  }
527
528  if (ccpok) {
529    fsm_Up(&dl->physical->link.ccp.fsm);
530    fsm_Open(&dl->physical->link.ccp.fsm);
531  }
532  datalink_NewState(dl, DATALINK_OPEN);
533  bundle_NewPhase(dl->bundle, PHASE_NETWORK);
534  (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
535}
536
537void
538datalink_CBCPComplete(struct datalink *dl)
539{
540  datalink_NewState(dl, DATALINK_LCP);
541  fsm_Close(&dl->physical->link.lcp.fsm);
542}
543
544void
545datalink_CBCPFailed(struct datalink *dl)
546{
547  cbcp_Down(&dl->cbcp);
548  datalink_CBCPComplete(dl);
549}
550
551void
552datalink_AuthOk(struct datalink *dl)
553{
554  if (dl->physical->link.lcp.his_callback.opmask ==
555      CALLBACK_BIT(CALLBACK_CBCP) ||
556      dl->physical->link.lcp.want_callback.opmask ==
557      CALLBACK_BIT(CALLBACK_CBCP)) {
558    datalink_NewState(dl, DATALINK_CBCP);
559    cbcp_Up(&dl->cbcp);
560  } else if (dl->physical->link.lcp.want_callback.opmask) {
561    log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
562    datalink_NewState(dl, DATALINK_LCP);
563    fsm_Close(&dl->physical->link.lcp.fsm);
564  } else
565    switch (dl->physical->link.lcp.his_callback.opmask) {
566      case 0:
567        datalink_NCPUp(dl);
568        break;
569
570      case CALLBACK_BIT(CALLBACK_AUTH):
571        auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
572                          sizeof dl->cbcp.fsm.phone);
573        if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
574          log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
575                     dl->peer.authname);
576          *dl->cbcp.fsm.phone = '\0';
577        } else {
578          char *ptr = strchr(dl->cbcp.fsm.phone, ',');
579          if (ptr)
580            *ptr = '\0';	/* Call back on the first number */
581          log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
582                     dl->cbcp.fsm.phone);
583          dl->cbcp.required = 1;
584        }
585        dl->cbcp.fsm.delay = 0;
586        datalink_NewState(dl, DATALINK_LCP);
587        fsm_Close(&dl->physical->link.lcp.fsm);
588        break;
589
590      case CALLBACK_BIT(CALLBACK_E164):
591        strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
592                sizeof dl->cbcp.fsm.phone - 1);
593        dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
594        log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
595                   dl->cbcp.fsm.phone);
596        dl->cbcp.required = 1;
597        dl->cbcp.fsm.delay = 0;
598        datalink_NewState(dl, DATALINK_LCP);
599        fsm_Close(&dl->physical->link.lcp.fsm);
600        break;
601
602      default:
603        log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
604                   dl->name);
605        datalink_NewState(dl, DATALINK_LCP);
606        fsm_Close(&dl->physical->link.lcp.fsm);
607        break;
608    }
609}
610
611void
612datalink_AuthNotOk(struct datalink *dl)
613{
614  datalink_NewState(dl, DATALINK_LCP);
615  fsm_Close(&dl->physical->link.lcp.fsm);
616}
617
618static void
619datalink_LayerDown(void *v, struct fsm *fp)
620{
621  /* The given FSM has been told to come down */
622  struct datalink *dl = (struct datalink *)v;
623
624  if (fp->proto == PROTO_LCP) {
625    switch (dl->state) {
626      case DATALINK_OPEN:
627        peerid_Init(&dl->peer);
628        fsm2initial(&dl->physical->link.ccp.fsm);
629        datalink_NewState(dl, DATALINK_LCP);  /* before parent TLD */
630        (*dl->parent->LayerDown)(dl->parent->object, fp);
631        /* fall through (just in case) */
632
633      case DATALINK_CBCP:
634        if (!dl->cbcp.required)
635          cbcp_Down(&dl->cbcp);
636        /* fall through (just in case) */
637
638      case DATALINK_AUTH:
639        timer_Stop(&dl->pap.authtimer);
640        timer_Stop(&dl->chap.auth.authtimer);
641    }
642    datalink_NewState(dl, DATALINK_LCP);
643  }
644}
645
646static void
647datalink_LayerFinish(void *v, struct fsm *fp)
648{
649  /* The given fsm is now down */
650  struct datalink *dl = (struct datalink *)v;
651
652  if (fp->proto == PROTO_LCP) {
653    fsm2initial(fp);
654    (*dl->parent->LayerFinish)(dl->parent->object, fp);
655    datalink_ComeDown(dl, CLOSE_NORMAL);
656  } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
657    fsm_Open(fp);		/* CCP goes to ST_STOPPED */
658}
659
660struct datalink *
661datalink_Create(const char *name, struct bundle *bundle, int type)
662{
663  struct datalink *dl;
664
665  dl = (struct datalink *)malloc(sizeof(struct datalink));
666  if (dl == NULL)
667    return dl;
668
669  dl->desc.type = DATALINK_DESCRIPTOR;
670  dl->desc.UpdateSet = datalink_UpdateSet;
671  dl->desc.IsSet = datalink_IsSet;
672  dl->desc.Read = datalink_Read;
673  dl->desc.Write = datalink_Write;
674
675  dl->state = DATALINK_CLOSED;
676
677  *dl->cfg.script.dial = '\0';
678  *dl->cfg.script.login = '\0';
679  *dl->cfg.script.hangup = '\0';
680  *dl->cfg.phone.list = '\0';
681  *dl->phone.list = '\0';
682  dl->phone.next = NULL;
683  dl->phone.alt = NULL;
684  dl->phone.chosen = "N/A";
685  dl->stayonline = 0;
686  dl->script.run = 1;
687  dl->script.packetmode = 1;
688  mp_linkInit(&dl->mp);
689
690  dl->bundle = bundle;
691  dl->next = NULL;
692
693  memset(&dl->dial_timer, '\0', sizeof dl->dial_timer);
694
695  dl->dial_tries = 0;
696  dl->cfg.dial.max = 1;
697  dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
698  dl->cfg.dial.timeout = DIAL_TIMEOUT;
699
700  dl->reconnect_tries = 0;
701  dl->cfg.reconnect.max = 0;
702  dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
703
704  dl->cfg.callback.opmask = 0;
705  dl->cfg.cbcp.delay = 0;
706  *dl->cfg.cbcp.phone = '\0';
707  dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
708
709  dl->name = strdup(name);
710  peerid_Init(&dl->peer);
711  dl->parent = &bundle->fsm;
712  dl->fsmp.LayerStart = datalink_LayerStart;
713  dl->fsmp.LayerUp = datalink_LayerUp;
714  dl->fsmp.LayerDown = datalink_LayerDown;
715  dl->fsmp.LayerFinish = datalink_LayerFinish;
716  dl->fsmp.object = dl;
717
718  auth_Init(&dl->pap);
719  auth_Init(&dl->chap.auth);
720
721  if ((dl->physical = modem_Create(dl, type)) == NULL) {
722    free(dl->name);
723    free(dl);
724    return NULL;
725  }
726  cbcp_Init(&dl->cbcp, dl->physical);
727  chat_Init(&dl->chat, dl->physical, NULL, 1, NULL);
728
729  log_Printf(LogPHASE, "%s: Created in %s state\n",
730             dl->name, datalink_State(dl));
731
732  return dl;
733}
734
735struct datalink *
736datalink_Clone(struct datalink *odl, const char *name)
737{
738  struct datalink *dl;
739
740  dl = (struct datalink *)malloc(sizeof(struct datalink));
741  if (dl == NULL)
742    return dl;
743
744  dl->desc.type = DATALINK_DESCRIPTOR;
745  dl->desc.UpdateSet = datalink_UpdateSet;
746  dl->desc.IsSet = datalink_IsSet;
747  dl->desc.Read = datalink_Read;
748  dl->desc.Write = datalink_Write;
749
750  dl->state = DATALINK_CLOSED;
751
752  memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
753  mp_linkInit(&dl->mp);
754  *dl->phone.list = '\0';
755  dl->phone.next = NULL;
756  dl->phone.alt = NULL;
757  dl->phone.chosen = "N/A";
758  dl->bundle = odl->bundle;
759  dl->next = NULL;
760  memset(&dl->dial_timer, '\0', sizeof dl->dial_timer);
761  dl->dial_tries = 0;
762  dl->reconnect_tries = 0;
763  dl->name = strdup(name);
764  peerid_Init(&dl->peer);
765  dl->parent = odl->parent;
766  memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
767  dl->fsmp.object = dl;
768  auth_Init(&dl->pap);
769  dl->pap.cfg.fsmretry = odl->pap.cfg.fsmretry;
770
771  auth_Init(&dl->chap.auth);
772  dl->chap.auth.cfg.fsmretry = odl->chap.auth.cfg.fsmretry;
773
774  if ((dl->physical = modem_Create(dl, PHYS_INTERACTIVE)) == NULL) {
775    free(dl->name);
776    free(dl);
777    return NULL;
778  }
779  memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
780  memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
781         sizeof dl->physical->link.lcp.cfg);
782  memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
783         sizeof dl->physical->link.ccp.cfg);
784  memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
785         sizeof dl->physical->async.cfg);
786
787  cbcp_Init(&dl->cbcp, dl->physical);
788  chat_Init(&dl->chat, dl->physical, NULL, 1, NULL);
789
790  log_Printf(LogPHASE, "%s: Cloned in %s state\n",
791             dl->name, datalink_State(dl));
792
793  return dl;
794}
795
796struct datalink *
797datalink_Destroy(struct datalink *dl)
798{
799  struct datalink *result;
800
801  if (dl->state != DATALINK_CLOSED) {
802    log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
803              datalink_State(dl));
804    switch (dl->state) {
805      case DATALINK_HANGUP:
806      case DATALINK_DIAL:
807      case DATALINK_LOGIN:
808        chat_Destroy(&dl->chat);	/* Gotta blat the timers ! */
809        break;
810    }
811  }
812
813  result = dl->next;
814  modem_Destroy(dl->physical);
815  free(dl->name);
816  free(dl);
817
818  return result;
819}
820
821void
822datalink_Up(struct datalink *dl, int runscripts, int packetmode)
823{
824  if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
825    /* Ignore scripts */
826    runscripts = 0;
827
828  switch (dl->state) {
829    case DATALINK_CLOSED:
830      if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
831          bundle_Phase(dl->bundle) == PHASE_TERMINATE)
832        bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
833      datalink_NewState(dl, DATALINK_OPENING);
834      dl->reconnect_tries =
835        dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
836      dl->dial_tries = dl->cfg.dial.max;
837      dl->script.run = runscripts;
838      dl->script.packetmode = packetmode;
839      break;
840
841    case DATALINK_OPENING:
842      if (!dl->script.run && runscripts)
843        dl->script.run = 1;
844      /* fall through */
845
846    case DATALINK_DIAL:
847    case DATALINK_LOGIN:
848    case DATALINK_READY:
849      if (!dl->script.packetmode && packetmode) {
850        dl->script.packetmode = 1;
851        if (dl->state == DATALINK_READY)
852          datalink_LoginDone(dl);
853      }
854      break;
855  }
856}
857
858void
859datalink_Close(struct datalink *dl, int how)
860{
861  /* Please close */
862  switch (dl->state) {
863    case DATALINK_OPEN:
864      peerid_Init(&dl->peer);
865      fsm2initial(&dl->physical->link.ccp.fsm);
866      /* fall through */
867
868    case DATALINK_CBCP:
869    case DATALINK_AUTH:
870    case DATALINK_LCP:
871      fsm_Close(&dl->physical->link.lcp.fsm);
872      if (how != CLOSE_NORMAL) {
873        dl->dial_tries = -1;
874        dl->reconnect_tries = 0;
875        if (how == CLOSE_LCP)
876          dl->stayonline = 1;
877      }
878      break;
879
880    default:
881      datalink_ComeDown(dl, how);
882  }
883}
884
885void
886datalink_Down(struct datalink *dl, int how)
887{
888  /* Carrier is lost */
889  switch (dl->state) {
890    case DATALINK_OPEN:
891      peerid_Init(&dl->peer);
892      fsm2initial(&dl->physical->link.ccp.fsm);
893      /* fall through */
894
895    case DATALINK_CBCP:
896    case DATALINK_AUTH:
897    case DATALINK_LCP:
898      fsm2initial(&dl->physical->link.lcp.fsm);
899      /* fall through */
900
901    default:
902      datalink_ComeDown(dl, how);
903  }
904}
905
906void
907datalink_StayDown(struct datalink *dl)
908{
909  dl->reconnect_tries = 0;
910}
911
912void
913datalink_DontHangup(struct datalink *dl)
914{
915  if (dl->state >= DATALINK_LCP)
916    dl->stayonline = 1;
917}
918
919int
920datalink_Show(struct cmdargs const *arg)
921{
922  prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
923  prompt_Printf(arg->prompt, " State:              %s\n",
924                datalink_State(arg->cx));
925  prompt_Printf(arg->prompt, " CHAP Encryption:    %s\n",
926                arg->cx->chap.using_MSChap ? "MSChap" : "MD5" );
927  prompt_Printf(arg->prompt, " Peer name:          ");
928  if (*arg->cx->peer.authname)
929    prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
930  else if (arg->cx->state == DATALINK_OPEN)
931    prompt_Printf(arg->prompt, "None requested\n");
932  else
933    prompt_Printf(arg->prompt, "N/A\n");
934  prompt_Printf(arg->prompt, " Discriminator:      %s\n",
935                mp_Enddisc(arg->cx->peer.enddisc.class,
936                           arg->cx->peer.enddisc.address,
937                           arg->cx->peer.enddisc.len));
938
939  prompt_Printf(arg->prompt, "\nDefaults:\n");
940  prompt_Printf(arg->prompt, " Phone List:         %s\n",
941                arg->cx->cfg.phone.list);
942  if (arg->cx->cfg.dial.max)
943    prompt_Printf(arg->prompt, " Dial tries:         %d, delay ",
944                  arg->cx->cfg.dial.max);
945  else
946    prompt_Printf(arg->prompt, " Dial tries:         infinite, delay ");
947  if (arg->cx->cfg.dial.next_timeout > 0)
948    prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
949  else
950    prompt_Printf(arg->prompt, "random/");
951  if (arg->cx->cfg.dial.timeout > 0)
952    prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
953  else
954    prompt_Printf(arg->prompt, "random\n");
955  prompt_Printf(arg->prompt, " Reconnect tries:    %d, delay ",
956                arg->cx->cfg.reconnect.max);
957  if (arg->cx->cfg.reconnect.timeout > 0)
958    prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
959  else
960    prompt_Printf(arg->prompt, "random\n");
961  prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
962                PHYS_DIRECT ?  "accepted: " : "requested:");
963  if (!arg->cx->cfg.callback.opmask)
964    prompt_Printf(arg->prompt, "none\n");
965  else {
966    int comma = 0;
967
968    if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
969      prompt_Printf(arg->prompt, "none");
970      comma = 1;
971    }
972    if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
973      prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
974      comma = 1;
975    }
976    if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
977      prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
978      if (arg->cx->physical->type != PHYS_DIRECT)
979        prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
980      comma = 1;
981    }
982    if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
983      prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
984      prompt_Printf(arg->prompt, " CBCP:               delay: %ds\n",
985                    arg->cx->cfg.cbcp.delay);
986      prompt_Printf(arg->prompt, "                     phone: %s\n",
987                    arg->cx->cfg.cbcp.phone);
988      prompt_Printf(arg->prompt, "                     timeout: %lds\n",
989                    arg->cx->cfg.cbcp.fsmretry);
990    } else
991      prompt_Printf(arg->prompt, "\n");
992  }
993
994  prompt_Printf(arg->prompt, " Dial Script:        %s\n",
995                arg->cx->cfg.script.dial);
996  prompt_Printf(arg->prompt, " Login Script:       %s\n",
997                arg->cx->cfg.script.login);
998  prompt_Printf(arg->prompt, " Hangup Script:      %s\n",
999                arg->cx->cfg.script.hangup);
1000  return 0;
1001}
1002
1003int
1004datalink_SetReconnect(struct cmdargs const *arg)
1005{
1006  if (arg->argc == arg->argn+2) {
1007    arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1008    arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1009    return 0;
1010  }
1011  return -1;
1012}
1013
1014int
1015datalink_SetRedial(struct cmdargs const *arg)
1016{
1017  int timeout;
1018  int tries;
1019  char *dot;
1020
1021  if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1022    if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1023	(arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1024      arg->cx->cfg.dial.timeout = -1;
1025      randinit();
1026    } else {
1027      timeout = atoi(arg->argv[arg->argn]);
1028
1029      if (timeout >= 0)
1030	arg->cx->cfg.dial.timeout = timeout;
1031      else {
1032	log_Printf(LogWARN, "Invalid redial timeout\n");
1033	return -1;
1034      }
1035    }
1036
1037    dot = strchr(arg->argv[arg->argn], '.');
1038    if (dot) {
1039      if (strcasecmp(++dot, "random") == 0) {
1040	arg->cx->cfg.dial.next_timeout = -1;
1041	randinit();
1042      } else {
1043	timeout = atoi(dot);
1044	if (timeout >= 0)
1045	  arg->cx->cfg.dial.next_timeout = timeout;
1046	else {
1047	  log_Printf(LogWARN, "Invalid next redial timeout\n");
1048	  return -1;
1049	}
1050      }
1051    } else
1052      /* Default next timeout */
1053      arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1054
1055    if (arg->argc == arg->argn+2) {
1056      tries = atoi(arg->argv[arg->argn+1]);
1057
1058      if (tries >= 0) {
1059	arg->cx->cfg.dial.max = tries;
1060      } else {
1061	log_Printf(LogWARN, "Invalid retry value\n");
1062	return 1;
1063      }
1064    }
1065    return 0;
1066  }
1067  return -1;
1068}
1069
1070static const char *states[] = {
1071  "closed",
1072  "opening",
1073  "hangup",
1074  "dial",
1075  "login",
1076  "ready",
1077  "lcp",
1078  "auth",
1079  "cbcp",
1080  "open"
1081};
1082
1083const char *
1084datalink_State(struct datalink *dl)
1085{
1086  if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
1087    return "unknown";
1088  return states[dl->state];
1089}
1090
1091static void
1092datalink_NewState(struct datalink *dl, int state)
1093{
1094  if (state != dl->state) {
1095    if (state >= 0 && state < sizeof states / sizeof states[0]) {
1096      log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1097                 states[state]);
1098      dl->state = state;
1099    } else
1100      log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1101  }
1102}
1103
1104struct datalink *
1105iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1106             int fd)
1107{
1108  struct datalink *dl, *cdl;
1109  u_int retry;
1110  char *oname;
1111
1112  dl = (struct datalink *)iov[(*niov)++].iov_base;
1113  dl->name = iov[*niov].iov_base;
1114
1115  if (dl->name[DATALINK_MAXNAME-1]) {
1116    dl->name[DATALINK_MAXNAME-1] = '\0';
1117    if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1118      log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1119  }
1120
1121  /* Make sure the name is unique ! */
1122  oname = NULL;
1123  do {
1124    for (cdl = bundle->links; cdl; cdl = cdl->next)
1125      if (!strcasecmp(dl->name, cdl->name)) {
1126        if (oname)
1127          free(datalink_NextName(dl));
1128        else
1129          oname = datalink_NextName(dl);
1130        break;	/* Keep renaming 'till we have no conflicts */
1131      }
1132  } while (cdl);
1133
1134  if (oname) {
1135    log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1136    free(oname);
1137  } else {
1138    dl->name = strdup(dl->name);
1139    free(iov[*niov].iov_base);
1140  }
1141  (*niov)++;
1142
1143  dl->desc.type = DATALINK_DESCRIPTOR;
1144  dl->desc.UpdateSet = datalink_UpdateSet;
1145  dl->desc.IsSet = datalink_IsSet;
1146  dl->desc.Read = datalink_Read;
1147  dl->desc.Write = datalink_Write;
1148
1149  mp_linkInit(&dl->mp);
1150  *dl->phone.list = '\0';
1151  dl->phone.next = NULL;
1152  dl->phone.alt = NULL;
1153  dl->phone.chosen = "N/A";
1154
1155  dl->bundle = bundle;
1156  dl->next = NULL;
1157  memset(&dl->dial_timer, '\0', sizeof dl->dial_timer);
1158  dl->dial_tries = 0;
1159  dl->reconnect_tries = 0;
1160  dl->parent = &bundle->fsm;
1161  dl->fsmp.LayerStart = datalink_LayerStart;
1162  dl->fsmp.LayerUp = datalink_LayerUp;
1163  dl->fsmp.LayerDown = datalink_LayerDown;
1164  dl->fsmp.LayerFinish = datalink_LayerFinish;
1165  dl->fsmp.object = dl;
1166
1167  retry = dl->pap.cfg.fsmretry;
1168  auth_Init(&dl->pap);
1169  dl->pap.cfg.fsmretry = retry;
1170
1171  retry = dl->chap.auth.cfg.fsmretry;
1172  auth_Init(&dl->chap.auth);
1173  dl->chap.auth.cfg.fsmretry = retry;
1174
1175  dl->physical = iov2modem(dl, iov, niov, maxiov, fd);
1176
1177  if (!dl->physical) {
1178    free(dl->name);
1179    free(dl);
1180    dl = NULL;
1181  } else {
1182    cbcp_Init(&dl->cbcp, dl->physical);
1183    chat_Init(&dl->chat, dl->physical, NULL, 1, NULL);
1184
1185    log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1186              dl->name, datalink_State(dl));
1187  }
1188
1189  return dl;
1190}
1191
1192int
1193datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1194             pid_t newpid)
1195{
1196  /* If `dl' is NULL, we're allocating before a Fromiov() */
1197  int link_fd;
1198
1199  if (dl) {
1200    timer_Stop(&dl->dial_timer);
1201    /* The following is purely for the sake of paranoia */
1202    cbcp_Down(&dl->cbcp);
1203    timer_Stop(&dl->pap.authtimer);
1204    timer_Stop(&dl->chap.auth.authtimer);
1205  }
1206
1207  if (*niov >= maxiov - 1) {
1208    log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1209    if (dl) {
1210      free(dl->name);
1211      free(dl);
1212    }
1213    return -1;
1214  }
1215
1216  iov[*niov].iov_base = dl ? dl : malloc(sizeof *dl);
1217  iov[(*niov)++].iov_len = sizeof *dl;
1218  iov[*niov].iov_base =
1219    dl ? realloc(dl->name, DATALINK_MAXNAME) : malloc(DATALINK_MAXNAME);
1220  iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1221
1222  link_fd = modem2iov(dl ? dl->physical : NULL, iov, niov, maxiov, newpid);
1223
1224  if (link_fd == -1 && dl) {
1225    free(dl->name);
1226    free(dl);
1227  }
1228
1229  return link_fd;
1230}
1231
1232void
1233datalink_Rename(struct datalink *dl, const char *name)
1234{
1235  free(dl->name);
1236  dl->physical->link.name = dl->name = strdup(name);
1237}
1238
1239char *
1240datalink_NextName(struct datalink *dl)
1241{
1242  int f, n;
1243  char *name, *oname;
1244
1245  n = strlen(dl->name);
1246  name = (char *)malloc(n+3);
1247  for (f = n - 1; f >= 0; f--)
1248    if (!isdigit(dl->name[f]))
1249      break;
1250  n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1251  sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1252  oname = dl->name;
1253  dl->name = name;
1254  /* our physical link name isn't updated (it probably isn't created yet) */
1255  return oname;
1256}
1257
1258int
1259datalink_SetMode(struct datalink *dl, int mode)
1260{
1261  if (!physical_SetMode(dl->physical, mode))
1262    return 0;
1263  if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1264    dl->script.run = 0;
1265  if (dl->physical->type == PHYS_DIRECT)
1266    dl->reconnect_tries = 0;
1267  if (mode & (PHYS_DDIAL|PHYS_BACKGROUND) && dl->state <= DATALINK_READY)
1268    datalink_Up(dl, 1, 1);
1269  return 1;
1270}
1271