2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/param.h>
30 #include <netinet/in.h>
31 #include <netinet/in_systm.h>
32 #include <netinet/ip.h>
49 #include "descriptor.h"
53 #include "throughput.h"
58 #include "slcompress.h"
76 static void datalink_LoginDone(struct datalink *);
77 static void datalink_NewState(struct datalink *, int);
80 datalink_OpenTimeout(void *v)
82 struct datalink *dl = (struct datalink *)v;
84 timer_Stop(&dl->dial.timer);
85 if (dl->state == DATALINK_OPENING)
86 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
90 datalink_StartDialTimer(struct datalink *dl, int Timeout)
94 timer_Stop(&dl->dial.timer);
97 dl->dial.timer.load = Timeout * SECTICKS;
99 result = (random() % DIAL_TIMEOUT) + 1;
100 dl->dial.timer.load = result * SECTICKS;
102 dl->dial.timer.func = datalink_OpenTimeout;
103 dl->dial.timer.name = "dial";
104 dl->dial.timer.arg = dl;
105 timer_Start(&dl->dial.timer);
106 if (dl->state == DATALINK_OPENING)
107 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
114 datalink_HangupDone(struct datalink *dl)
116 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
117 dl->physical->fd != -1) {
118 /* Don't close our device if the link is dedicated */
119 datalink_LoginDone(dl);
123 chat_Finish(&dl->chat);
124 physical_Close(dl->physical);
125 dl->phone.chosen = "N/A";
127 if (dl->cbcp.required) {
128 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
129 dl->cfg.callback.opmask = 0;
130 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
131 sizeof dl->cfg.phone.list - 1);
132 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
133 dl->phone.alt = dl->phone.next = NULL;
134 dl->reconnect_tries = dl->cfg.reconnect.max;
135 dl->dial.tries = dl->cfg.dial.max;
138 dl->script.packetmode = 1;
139 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
140 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
141 bundle_LinksRemoved(dl->bundle);
142 /* if dial.timeout is < 0 (random), we don't override fsm.delay */
143 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
144 dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
145 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
146 cbcp_Down(&dl->cbcp);
147 datalink_NewState(dl, DATALINK_OPENING);
148 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
149 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
150 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
151 } else if (dl->bundle->CleaningUp ||
152 (dl->physical->type == PHYS_DIRECT) ||
153 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
154 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
155 datalink_NewState(dl, DATALINK_CLOSED);
158 dl->reconnect_tries = 0;
159 bundle_LinkClosed(dl->bundle, dl);
160 if (!dl->bundle->CleaningUp &&
161 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
162 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
164 datalink_NewState(dl, DATALINK_OPENING);
165 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
166 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
167 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
168 if (dl->dial.tries < 0) {
169 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
170 dl->dial.tries = dl->cfg.dial.max;
172 dl->reconnect_tries--;
173 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
174 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
175 dl->cfg.reconnect.max);
176 bundle_Notify(dl->bundle, EX_RECONNECT);
178 if (dl->phone.next == NULL)
179 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
181 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
182 bundle_Notify(dl->bundle, EX_REDIAL);
188 datalink_ChoosePhoneNumber(struct datalink *dl)
192 if (dl->phone.alt == NULL) {
193 if (dl->phone.next == NULL) {
194 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
195 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
196 if (*dl->phone.list == '\0')
198 dl->phone.next = dl->phone.list;
200 dl->phone.alt = strsep(&dl->phone.next, ":");
202 phone = strsep(&dl->phone.alt, "|");
203 dl->phone.chosen = *phone ? phone : "[NONE]";
205 log_Printf(LogCHAT, "Phone: %s\n", phone);
210 datalink_LoginDone(struct datalink *dl)
212 chat_Finish(&dl->chat);
214 if (!dl->script.packetmode) {
217 datalink_NewState(dl, DATALINK_READY);
218 } else if (!physical_Raw(dl->physical)) {
220 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
221 if (dl->script.run) {
222 datalink_NewState(dl, DATALINK_LOGOUT);
223 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
224 log_Printf(LogWARN, "Invalid logout script\n");
226 physical_StopDeviceTimer(dl->physical);
227 if (dl->physical->type == PHYS_DEDICATED)
228 /* force a redial timeout */
229 physical_Close(dl->physical);
230 datalink_HangupDone(dl);
236 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
237 async_Init(&dl->physical->async);
239 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
240 0 : dl->physical->link.lcp.cfg.openmode);
241 ccp_Setup(&dl->physical->link.ccp);
243 datalink_NewState(dl, DATALINK_LCP);
244 fsm_Up(&dl->physical->link.lcp.fsm);
245 fsm_Open(&dl->physical->link.lcp.fsm);
250 datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
253 struct datalink *dl = descriptor2datalink(d);
258 case DATALINK_CLOSED:
259 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
260 PHYS_FOREGROUND|PHYS_DDIAL)) &&
261 !dl->bundle->CleaningUp)
263 * Our first time in - DEDICATED & DDIAL never come down, and
264 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
265 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
268 datalink_Up(dl, 1, 1);
273 case DATALINK_OPENING:
274 if (dl->dial.timer.state != TIMER_RUNNING) {
275 if (--dl->dial.tries < 0)
277 if (physical_Open(dl->physical, dl->bundle) >= 0) {
278 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
279 "Type `~?' for help\r\n", dl->name,
280 dl->physical->name.full);
281 if (dl->script.run) {
282 datalink_NewState(dl, DATALINK_DIAL);
283 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
284 *dl->cfg.script.dial ?
285 datalink_ChoosePhoneNumber(dl) : ""))
286 log_Printf(LogWARN, "Invalid dial script\n");
287 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
289 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
290 dl->name, dl->cfg.dial.max - dl->dial.tries,
293 datalink_NewState(dl, DATALINK_CARRIER);
294 return datalink_UpdateSet(d, r, w, e, n);
296 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
298 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
299 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
301 log_Printf(LogCHAT, "Failed to open device\n");
303 if (dl->bundle->CleaningUp ||
304 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
305 dl->cfg.dial.max && dl->dial.tries == 0)) {
306 datalink_NewState(dl, DATALINK_CLOSED);
307 dl->reconnect_tries = 0;
309 log_WritePrompts(dl, "Failed to open %s\n",
310 dl->physical->name.full);
311 bundle_LinkClosed(dl->bundle, dl);
313 if (!dl->bundle->CleaningUp) {
316 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
317 bundle_Notify(dl->bundle, EX_REDIAL);
318 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
319 dl->physical->name.full, timeout);
325 case DATALINK_CARRIER:
326 /* Wait for carrier on the device */
327 switch (physical_AwaitCarrier(dl->physical)) {
328 case CARRIER_PENDING:
329 log_Printf(LogDEBUG, "Waiting for carrier\n");
330 return 0; /* A device timer is running to wake us up again */
333 if (dl->script.run) {
334 datalink_NewState(dl, DATALINK_LOGIN);
335 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
336 log_Printf(LogWARN, "Invalid login script\n");
338 datalink_LoginDone(dl);
339 return datalink_UpdateSet(d, r, w, e, n);
342 physical_Offline(dl->physical); /* Is this required ? */
343 if (dl->script.run) {
344 datalink_NewState(dl, DATALINK_HANGUP);
345 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
346 log_Printf(LogWARN, "Invalid hangup script\n");
347 return datalink_UpdateSet(d, r, w, e, n);
349 datalink_HangupDone(dl);
350 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
354 case DATALINK_HANGUP:
356 case DATALINK_LOGOUT:
358 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
359 switch (dl->chat.state) {
361 /* script succeeded */
363 case DATALINK_HANGUP:
364 datalink_HangupDone(dl);
367 datalink_NewState(dl, DATALINK_CARRIER);
368 return datalink_UpdateSet(d, r, w, e, n);
369 case DATALINK_LOGOUT:
370 datalink_NewState(dl, DATALINK_HANGUP);
371 physical_Offline(dl->physical);
372 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
373 log_Printf(LogWARN, "Invalid hangup script\n");
374 return datalink_UpdateSet(d, r, w, e, n);
376 dl->phone.alt = NULL;
377 datalink_LoginDone(dl);
378 return datalink_UpdateSet(d, r, w, e, n);
382 /* Going down - script failed */
383 log_Printf(LogWARN, "Chat script failed\n");
385 case DATALINK_HANGUP:
386 datalink_HangupDone(dl);
389 case DATALINK_LOGOUT:
391 datalink_NewState(dl, DATALINK_HANGUP);
392 physical_Offline(dl->physical);
393 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
394 log_Printf(LogWARN, "Invalid hangup script\n");
395 return datalink_UpdateSet(d, r, w, e, n);
406 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
407 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
414 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
416 return physical_RemoveFromSet(dl->physical, r, w, e);
420 datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
422 struct datalink *dl = descriptor2datalink(d);
425 case DATALINK_CLOSED:
426 case DATALINK_OPENING:
429 case DATALINK_HANGUP:
431 case DATALINK_LOGOUT:
433 return descriptor_IsSet(&dl->chat.desc, fdset);
440 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
441 descriptor_IsSet(&dl->physical->desc, fdset);
447 datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
449 struct datalink *dl = descriptor2datalink(d);
452 case DATALINK_CLOSED:
453 case DATALINK_OPENING:
456 case DATALINK_HANGUP:
458 case DATALINK_LOGOUT:
460 descriptor_Read(&dl->chat.desc, bundle, fdset);
468 if (descriptor_IsSet(&dl->chap.desc, fdset))
469 descriptor_Read(&dl->chap.desc, bundle, fdset);
470 if (descriptor_IsSet(&dl->physical->desc, fdset))
471 descriptor_Read(&dl->physical->desc, bundle, fdset);
477 datalink_Write(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
479 struct datalink *dl = descriptor2datalink(d);
483 case DATALINK_CLOSED:
484 case DATALINK_OPENING:
487 case DATALINK_HANGUP:
489 case DATALINK_LOGOUT:
491 result = descriptor_Write(&dl->chat.desc, bundle, fdset);
499 if (descriptor_IsSet(&dl->chap.desc, fdset))
500 result += descriptor_Write(&dl->chap.desc, bundle, fdset);
501 if (descriptor_IsSet(&dl->physical->desc, fdset))
502 result += descriptor_Write(&dl->physical->desc, bundle, fdset);
510 datalink_ComeDown(struct datalink *dl, int how)
512 if (how != CLOSE_NORMAL) {
514 dl->reconnect_tries = 0;
515 if (dl->state >= DATALINK_READY && how == CLOSE_LCP)
519 if (dl->state >= DATALINK_READY && dl->stayonline) {
521 physical_StopDeviceTimer(dl->physical);
522 datalink_NewState(dl, DATALINK_READY);
523 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
524 physical_Offline(dl->physical);
525 if (dl->script.run && dl->state != DATALINK_OPENING) {
526 if (dl->state == DATALINK_LOGOUT) {
527 datalink_NewState(dl, DATALINK_HANGUP);
528 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
529 log_Printf(LogWARN, "Invalid hangup script\n");
531 datalink_NewState(dl, DATALINK_LOGOUT);
532 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
533 log_Printf(LogWARN, "Invalid logout script\n");
536 datalink_HangupDone(dl);
541 datalink_LayerStart(void *v, struct fsm *fp)
543 /* The given FSM is about to start up ! */
544 struct datalink *dl = (struct datalink *)v;
546 if (fp->proto == PROTO_LCP)
547 (*dl->parent->LayerStart)(dl->parent->object, fp);
551 datalink_LayerUp(void *v, struct fsm *fp)
553 /* The given fsm is now up */
554 struct datalink *dl = (struct datalink *)v;
555 struct lcp *lcp = &dl->physical->link.lcp;
557 if (fp->proto == PROTO_LCP) {
558 datalink_GotAuthname(dl, "");
559 lcp->auth_ineed = lcp->want_auth;
560 lcp->auth_iwait = lcp->his_auth;
561 if (lcp->his_auth || lcp->want_auth) {
562 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
563 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
564 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
565 Auth2Nam(lcp->his_auth, lcp->his_authtype),
566 Auth2Nam(lcp->want_auth, lcp->want_authtype));
567 if (lcp->his_auth == PROTO_PAP)
568 auth_StartReq(&dl->pap);
569 if (lcp->want_auth == PROTO_CHAP)
570 auth_StartReq(&dl->chap.auth);
577 datalink_AuthReInit(struct datalink *dl)
579 auth_StopTimer(&dl->pap);
580 auth_StopTimer(&dl->chap.auth);
581 chap_ReInit(&dl->chap);
585 datalink_GotAuthname(struct datalink *dl, const char *name)
587 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
588 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
592 datalink_NCPUp(struct datalink *dl)
594 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
596 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
597 /* we've authenticated in multilink mode ! */
598 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
600 /* We've handed the link off to another ppp (well, we will soon) ! */
603 /* First link in the bundle */
604 auth_Select(dl->bundle, dl->peer.authname);
605 bundle_CalculateBandwidth(dl->bundle);
608 /* We're in multilink mode ! */
609 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
610 bundle_CalculateBandwidth(dl->bundle);
613 datalink_AuthNotOk(dl);
616 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
617 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
618 datalink_NewState(dl, DATALINK_OPEN);
619 bundle_CalculateBandwidth(dl->bundle);
620 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
623 dl->bundle->ncp.mp.peer = dl->peer;
624 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link);
625 auth_Select(dl->bundle, dl->peer.authname);
629 fsm_Up(&dl->physical->link.ccp.fsm);
630 fsm_Open(&dl->physical->link.ccp.fsm);
632 datalink_NewState(dl, DATALINK_OPEN);
633 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
634 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
638 datalink_CBCPComplete(struct datalink *dl)
640 datalink_NewState(dl, DATALINK_LCP);
641 datalink_AuthReInit(dl);
642 fsm_Close(&dl->physical->link.lcp.fsm);
646 datalink_CBCPFailed(struct datalink *dl)
648 cbcp_Down(&dl->cbcp);
649 datalink_CBCPComplete(dl);
653 datalink_AuthOk(struct datalink *dl)
655 if ((dl->physical->link.lcp.his_callback.opmask &
656 CALLBACK_BIT(CALLBACK_CBCP) ||
657 dl->physical->link.lcp.want_callback.opmask &
658 CALLBACK_BIT(CALLBACK_CBCP)) &&
659 !(dl->physical->link.lcp.want_callback.opmask &
660 CALLBACK_BIT(CALLBACK_AUTH))) {
661 /* We must have agreed CBCP if AUTH isn't there any more */
662 datalink_NewState(dl, DATALINK_CBCP);
664 } else if (dl->physical->link.lcp.want_callback.opmask) {
666 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
667 datalink_NewState(dl, DATALINK_LCP);
668 datalink_AuthReInit(dl);
669 fsm_Close(&dl->physical->link.lcp.fsm);
671 switch (dl->physical->link.lcp.his_callback.opmask) {
676 case CALLBACK_BIT(CALLBACK_AUTH):
677 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
678 sizeof dl->cbcp.fsm.phone);
679 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
680 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
682 *dl->cbcp.fsm.phone = '\0';
684 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
686 *ptr = '\0'; /* Call back on the first number */
687 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
689 dl->cbcp.required = 1;
691 dl->cbcp.fsm.delay = 0;
692 datalink_NewState(dl, DATALINK_LCP);
693 datalink_AuthReInit(dl);
694 fsm_Close(&dl->physical->link.lcp.fsm);
697 case CALLBACK_BIT(CALLBACK_E164):
698 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
699 sizeof dl->cbcp.fsm.phone - 1);
700 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
701 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
703 dl->cbcp.required = 1;
704 dl->cbcp.fsm.delay = 0;
705 datalink_NewState(dl, DATALINK_LCP);
706 datalink_AuthReInit(dl);
707 fsm_Close(&dl->physical->link.lcp.fsm);
711 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
713 datalink_NewState(dl, DATALINK_LCP);
714 datalink_AuthReInit(dl);
715 fsm_Close(&dl->physical->link.lcp.fsm);
721 datalink_AuthNotOk(struct datalink *dl)
723 datalink_NewState(dl, DATALINK_LCP);
724 datalink_AuthReInit(dl);
725 fsm_Close(&dl->physical->link.lcp.fsm);
729 datalink_LayerDown(void *v, struct fsm *fp)
731 /* The given FSM has been told to come down */
732 struct datalink *dl = (struct datalink *)v;
734 if (fp->proto == PROTO_LCP) {
737 peerid_Init(&dl->peer);
738 fsm2initial(&dl->physical->link.ccp.fsm);
739 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
740 (*dl->parent->LayerDown)(dl->parent->object, fp);
741 /* fall through (just in case) */
744 if (!dl->cbcp.required)
745 cbcp_Down(&dl->cbcp);
746 /* fall through (just in case) */
749 timer_Stop(&dl->pap.authtimer);
750 timer_Stop(&dl->chap.auth.authtimer);
752 datalink_NewState(dl, DATALINK_LCP);
753 datalink_AuthReInit(dl);
758 datalink_LayerFinish(void *v, struct fsm *fp)
760 /* The given fsm is now down */
761 struct datalink *dl = (struct datalink *)v;
763 if (fp->proto == PROTO_LCP) {
765 (*dl->parent->LayerFinish)(dl->parent->object, fp);
766 datalink_ComeDown(dl, CLOSE_NORMAL);
767 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
768 fsm_Open(fp); /* CCP goes to ST_STOPPED */
772 datalink_Create(const char *name, struct bundle *bundle, int type)
776 dl = (struct datalink *)malloc(sizeof(struct datalink));
780 dl->desc.type = DATALINK_DESCRIPTOR;
781 dl->desc.UpdateSet = datalink_UpdateSet;
782 dl->desc.IsSet = datalink_IsSet;
783 dl->desc.Read = datalink_Read;
784 dl->desc.Write = datalink_Write;
786 dl->state = DATALINK_CLOSED;
788 *dl->cfg.script.dial = '\0';
789 *dl->cfg.script.login = '\0';
790 *dl->cfg.script.logout = '\0';
791 *dl->cfg.script.hangup = '\0';
792 *dl->cfg.phone.list = '\0';
793 *dl->phone.list = '\0';
794 dl->phone.next = NULL;
795 dl->phone.alt = NULL;
796 dl->phone.chosen = "N/A";
799 dl->script.packetmode = 1;
800 mp_linkInit(&dl->mp);
805 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
808 dl->cfg.dial.max = 1;
809 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
810 dl->cfg.dial.timeout = DIAL_TIMEOUT;
811 dl->cfg.dial.inc = 0;
812 dl->cfg.dial.maxinc = 10;
814 dl->reconnect_tries = 0;
815 dl->cfg.reconnect.max = 0;
816 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
818 dl->cfg.callback.opmask = 0;
819 dl->cfg.cbcp.delay = 0;
820 *dl->cfg.cbcp.phone = '\0';
821 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
823 dl->name = strdup(name);
824 peerid_Init(&dl->peer);
825 dl->parent = &bundle->fsm;
826 dl->fsmp.LayerStart = datalink_LayerStart;
827 dl->fsmp.LayerUp = datalink_LayerUp;
828 dl->fsmp.LayerDown = datalink_LayerDown;
829 dl->fsmp.LayerFinish = datalink_LayerFinish;
830 dl->fsmp.object = dl;
832 if ((dl->physical = physical_Create(dl, type)) == NULL) {
838 pap_Init(&dl->pap, dl->physical);
839 chap_Init(&dl->chap, dl->physical);
840 cbcp_Init(&dl->cbcp, dl->physical);
842 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
843 chat_Init(&dl->chat, dl->physical);
845 log_Printf(LogPHASE, "%s: Created in %s state\n",
846 dl->name, datalink_State(dl));
852 datalink_Clone(struct datalink *odl, const char *name)
856 dl = (struct datalink *)malloc(sizeof(struct datalink));
860 dl->desc.type = DATALINK_DESCRIPTOR;
861 dl->desc.UpdateSet = datalink_UpdateSet;
862 dl->desc.IsSet = datalink_IsSet;
863 dl->desc.Read = datalink_Read;
864 dl->desc.Write = datalink_Write;
866 dl->state = DATALINK_CLOSED;
868 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
869 mp_linkInit(&dl->mp);
870 *dl->phone.list = '\0';
871 dl->phone.next = NULL;
872 dl->phone.alt = NULL;
873 dl->phone.chosen = "N/A";
874 dl->bundle = odl->bundle;
876 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
878 dl->reconnect_tries = 0;
879 dl->name = strdup(name);
880 peerid_Init(&dl->peer);
881 dl->parent = odl->parent;
882 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
883 dl->fsmp.object = dl;
885 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
890 pap_Init(&dl->pap, dl->physical);
891 dl->pap.cfg = odl->pap.cfg;
893 chap_Init(&dl->chap, dl->physical);
894 dl->chap.auth.cfg = odl->chap.auth.cfg;
896 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
897 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
898 sizeof dl->physical->link.lcp.cfg);
899 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
900 sizeof dl->physical->link.ccp.cfg);
901 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
902 sizeof dl->physical->async.cfg);
904 cbcp_Init(&dl->cbcp, dl->physical);
906 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
907 chat_Init(&dl->chat, dl->physical);
909 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
910 dl->name, datalink_State(dl));
916 datalink_Destroy(struct datalink *dl)
918 struct datalink *result;
920 if (dl->state != DATALINK_CLOSED) {
921 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
924 case DATALINK_HANGUP:
927 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
932 chat_Destroy(&dl->chat);
933 timer_Stop(&dl->dial.timer);
935 physical_Destroy(dl->physical);
943 datalink_Up(struct datalink *dl, int runscripts, int packetmode)
945 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
950 case DATALINK_CLOSED:
951 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
952 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
953 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
954 datalink_NewState(dl, DATALINK_OPENING);
955 dl->reconnect_tries =
956 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
957 dl->dial.tries = dl->cfg.dial.max;
958 dl->script.run = runscripts;
959 dl->script.packetmode = packetmode;
962 case DATALINK_OPENING:
963 if (!dl->script.run && runscripts)
970 if (!dl->script.packetmode && packetmode) {
971 dl->script.packetmode = 1;
972 if (dl->state == DATALINK_READY)
973 datalink_LoginDone(dl);
980 datalink_Close(struct datalink *dl, int how)
985 peerid_Init(&dl->peer);
986 fsm2initial(&dl->physical->link.ccp.fsm);
992 datalink_AuthReInit(dl);
993 fsm_Close(&dl->physical->link.lcp.fsm);
994 if (how != CLOSE_NORMAL) {
996 dl->reconnect_tries = 0;
997 if (how == CLOSE_LCP)
1003 datalink_ComeDown(dl, how);
1008 datalink_Down(struct datalink *dl, int how)
1010 /* Carrier is lost */
1011 switch (dl->state) {
1013 peerid_Init(&dl->peer);
1014 fsm2initial(&dl->physical->link.ccp.fsm);
1020 fsm2initial(&dl->physical->link.lcp.fsm);
1021 if (dl->state == DATALINK_OPENING)
1022 return; /* we're doing a callback... */
1026 datalink_ComeDown(dl, how);
1031 datalink_StayDown(struct datalink *dl)
1033 dl->reconnect_tries = 0;
1037 datalink_DontHangup(struct datalink *dl)
1039 if (dl->state >= DATALINK_LCP)
1044 datalink_Show(struct cmdargs const *arg)
1046 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1047 prompt_Printf(arg->prompt, " State: %s\n",
1048 datalink_State(arg->cx));
1049 prompt_Printf(arg->prompt, " Peer name: ");
1050 if (*arg->cx->peer.authname)
1051 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1052 else if (arg->cx->state == DATALINK_OPEN)
1053 prompt_Printf(arg->prompt, "None requested\n");
1055 prompt_Printf(arg->prompt, "N/A\n");
1056 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1057 mp_Enddisc(arg->cx->peer.enddisc.class,
1058 arg->cx->peer.enddisc.address,
1059 arg->cx->peer.enddisc.len));
1061 prompt_Printf(arg->prompt, "\nDefaults:\n");
1062 prompt_Printf(arg->prompt, " Phone List: %s\n",
1063 arg->cx->cfg.phone.list);
1064 if (arg->cx->cfg.dial.max)
1065 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1066 arg->cx->cfg.dial.max);
1068 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1069 if (arg->cx->cfg.dial.next_timeout >= 0)
1070 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1072 prompt_Printf(arg->prompt, "random/");
1073 if (arg->cx->cfg.dial.timeout >= 0)
1074 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1076 prompt_Printf(arg->prompt, "random\n");
1077 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1078 arg->cx->cfg.reconnect.max);
1079 if (arg->cx->cfg.reconnect.timeout > 0)
1080 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1082 prompt_Printf(arg->prompt, "random\n");
1083 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1084 PHYS_DIRECT ? "accepted: " : "requested:");
1085 if (!arg->cx->cfg.callback.opmask)
1086 prompt_Printf(arg->prompt, "none\n");
1090 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1091 prompt_Printf(arg->prompt, "none");
1094 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1095 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1098 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1099 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1100 if (arg->cx->physical->type != PHYS_DIRECT)
1101 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1104 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1105 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1106 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1107 arg->cx->cfg.cbcp.delay);
1108 prompt_Printf(arg->prompt, " phone: ");
1109 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1110 if (arg->cx->physical->type & PHYS_DIRECT)
1111 prompt_Printf(arg->prompt, "Caller decides\n");
1113 prompt_Printf(arg->prompt, "Dialback server decides\n");
1115 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1116 prompt_Printf(arg->prompt, " timeout: %lds\n",
1117 arg->cx->cfg.cbcp.fsmretry);
1119 prompt_Printf(arg->prompt, "\n");
1122 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1123 arg->cx->cfg.script.dial);
1124 prompt_Printf(arg->prompt, " Login Script: %s\n",
1125 arg->cx->cfg.script.login);
1126 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1127 arg->cx->cfg.script.logout);
1128 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1129 arg->cx->cfg.script.hangup);
1134 datalink_SetReconnect(struct cmdargs const *arg)
1136 if (arg->argc == arg->argn+2) {
1137 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1138 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1145 datalink_SetRedial(struct cmdargs const *arg)
1147 const char *sep, *osep;
1148 int timeout, inc, maxinc, tries;
1150 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1151 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1152 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1153 arg->cx->cfg.dial.timeout = -1;
1156 timeout = atoi(arg->argv[arg->argn]);
1159 arg->cx->cfg.dial.timeout = timeout;
1161 log_Printf(LogWARN, "Invalid redial timeout\n");
1166 sep = strchr(arg->argv[arg->argn], '+');
1171 arg->cx->cfg.dial.inc = inc;
1173 log_Printf(LogWARN, "Invalid timeout increment\n");
1176 sep = strchr(sep, '-');
1178 maxinc = atoi(++sep);
1180 arg->cx->cfg.dial.maxinc = maxinc;
1182 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1186 /* Default timeout increment */
1187 arg->cx->cfg.dial.maxinc = 10;
1191 /* Default timeout increment & max increment */
1192 arg->cx->cfg.dial.inc = 0;
1193 arg->cx->cfg.dial.maxinc = 10;
1194 sep = arg->argv[arg->argn];
1197 sep = strchr(sep, '.');
1199 if (strcasecmp(++sep, "random") == 0) {
1200 arg->cx->cfg.dial.next_timeout = -1;
1203 timeout = atoi(sep);
1205 arg->cx->cfg.dial.next_timeout = timeout;
1207 log_Printf(LogWARN, "Invalid next redial timeout\n");
1212 /* Default next timeout */
1213 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1215 if (arg->argc == arg->argn+2) {
1216 tries = atoi(arg->argv[arg->argn+1]);
1219 arg->cx->cfg.dial.max = tries;
1221 log_Printf(LogWARN, "Invalid retry value\n");
1231 static const char * const states[] = {
1247 datalink_State(struct datalink *dl)
1249 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
1251 return states[dl->state];
1255 datalink_NewState(struct datalink *dl, int state)
1257 if (state != dl->state) {
1258 if (state >= 0 && state < sizeof states / sizeof states[0]) {
1259 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1263 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1268 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1269 int fd, int *auxfd, int *nauxfd)
1271 struct datalink *dl, *cdl;
1272 struct fsm_retry copy;
1275 dl = (struct datalink *)iov[(*niov)++].iov_base;
1276 dl->name = iov[*niov].iov_base;
1278 if (dl->name[DATALINK_MAXNAME-1]) {
1279 dl->name[DATALINK_MAXNAME-1] = '\0';
1280 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1281 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1284 /* Make sure the name is unique ! */
1287 for (cdl = bundle->links; cdl; cdl = cdl->next)
1288 if (!strcasecmp(dl->name, cdl->name)) {
1290 free(datalink_NextName(dl));
1292 oname = datalink_NextName(dl);
1293 break; /* Keep renaming 'till we have no conflicts */
1298 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1301 dl->name = strdup(dl->name);
1302 free(iov[*niov].iov_base);
1306 dl->desc.type = DATALINK_DESCRIPTOR;
1307 dl->desc.UpdateSet = datalink_UpdateSet;
1308 dl->desc.IsSet = datalink_IsSet;
1309 dl->desc.Read = datalink_Read;
1310 dl->desc.Write = datalink_Write;
1312 mp_linkInit(&dl->mp);
1313 *dl->phone.list = '\0';
1314 dl->phone.next = NULL;
1315 dl->phone.alt = NULL;
1316 dl->phone.chosen = "N/A";
1318 dl->bundle = bundle;
1320 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1322 dl->reconnect_tries = 0;
1323 dl->parent = &bundle->fsm;
1324 dl->fsmp.LayerStart = datalink_LayerStart;
1325 dl->fsmp.LayerUp = datalink_LayerUp;
1326 dl->fsmp.LayerDown = datalink_LayerDown;
1327 dl->fsmp.LayerFinish = datalink_LayerFinish;
1328 dl->fsmp.object = dl;
1330 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1332 if (!dl->physical) {
1337 copy = dl->pap.cfg.fsm;
1338 pap_Init(&dl->pap, dl->physical);
1339 dl->pap.cfg.fsm = copy;
1341 copy = dl->chap.auth.cfg.fsm;
1342 chap_Init(&dl->chap, dl->physical);
1343 dl->chap.auth.cfg.fsm = copy;
1345 cbcp_Init(&dl->cbcp, dl->physical);
1347 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1348 chat_Init(&dl->chat, dl->physical);
1350 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1351 dl->name, datalink_State(dl));
1358 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1359 int *auxfd, int *nauxfd)
1361 /* If `dl' is NULL, we're allocating before a Fromiov() */
1365 timer_Stop(&dl->dial.timer);
1366 /* The following is purely for the sake of paranoia */
1367 cbcp_Down(&dl->cbcp);
1368 timer_Stop(&dl->pap.authtimer);
1369 timer_Stop(&dl->chap.auth.authtimer);
1372 if (*niov >= maxiov - 1) {
1373 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1381 iov[*niov].iov_base = (void *)dl;
1382 iov[(*niov)++].iov_len = sizeof *dl;
1383 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1384 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1386 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1389 if (link_fd == -1 && dl) {
1398 datalink_Rename(struct datalink *dl, const char *name)
1401 dl->physical->link.name = dl->name = strdup(name);
1405 datalink_NextName(struct datalink *dl)
1410 n = strlen(dl->name);
1411 name = (char *)malloc(n+3);
1412 for (f = n - 1; f >= 0; f--)
1413 if (!isdigit(dl->name[f]))
1415 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1416 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1419 /* our physical link name isn't updated (it probably isn't created yet) */
1424 datalink_SetMode(struct datalink *dl, int mode)
1426 if (!physical_SetMode(dl->physical, mode))
1428 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1430 if (dl->physical->type == PHYS_DIRECT)
1431 dl->reconnect_tries = 0;
1432 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1433 dl->state <= DATALINK_READY)
1434 datalink_Up(dl, 1, 1);
1439 datalink_GetDialTimeout(struct datalink *dl)
1441 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1443 if (dl->dial.incs < dl->cfg.dial.maxinc)