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(LogPHASE, "%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 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
163 datalink_NewState(dl, DATALINK_OPENING);
164 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
165 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
166 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
167 if (dl->dial.tries < 0) {
168 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
169 dl->dial.tries = dl->cfg.dial.max;
171 dl->reconnect_tries--;
173 if (dl->phone.next == NULL)
174 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
176 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
182 datalink_ChoosePhoneNumber(struct datalink *dl)
186 if (dl->phone.alt == NULL) {
187 if (dl->phone.next == NULL) {
188 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
189 dl->phone.list[sizeof dl->phone.list - 1] = '\0';
190 if (*dl->phone.list == '\0')
192 dl->phone.next = dl->phone.list;
194 dl->phone.alt = strsep(&dl->phone.next, ":");
196 phone = strsep(&dl->phone.alt, "|");
197 dl->phone.chosen = *phone ? phone : "[NONE]";
199 log_Printf(LogPHASE, "Phone: %s\n", phone);
204 datalink_LoginDone(struct datalink *dl)
206 chat_Finish(&dl->chat);
208 if (!dl->script.packetmode) {
211 datalink_NewState(dl, DATALINK_READY);
212 } else if (!physical_Raw(dl->physical)) {
214 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
215 if (dl->script.run) {
216 datalink_NewState(dl, DATALINK_LOGOUT);
217 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
218 log_Printf(LogWARN, "Invalid logout script\n");
220 physical_StopDeviceTimer(dl->physical);
221 if (dl->physical->type == PHYS_DEDICATED)
222 /* force a redial timeout */
223 physical_Close(dl->physical);
224 datalink_HangupDone(dl);
230 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
231 async_Init(&dl->physical->async);
233 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
234 0 : dl->physical->link.lcp.cfg.openmode);
235 ccp_Setup(&dl->physical->link.ccp);
237 datalink_NewState(dl, DATALINK_LCP);
238 fsm_Up(&dl->physical->link.lcp.fsm);
239 fsm_Open(&dl->physical->link.lcp.fsm);
244 datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e,
247 struct datalink *dl = descriptor2datalink(d);
252 case DATALINK_CLOSED:
253 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
254 PHYS_FOREGROUND|PHYS_DDIAL)) &&
255 !dl->bundle->CleaningUp)
257 * Our first time in - DEDICATED & DDIAL never come down, and
258 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
259 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
262 datalink_Up(dl, 1, 1);
267 case DATALINK_OPENING:
268 if (dl->dial.timer.state != TIMER_RUNNING) {
269 if (--dl->dial.tries < 0)
271 if (physical_Open(dl->physical, dl->bundle) >= 0) {
272 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
273 "Type `~?' for help\r\n", dl->name,
274 dl->physical->name.full);
275 if (dl->script.run) {
276 datalink_NewState(dl, DATALINK_DIAL);
277 if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
278 *dl->cfg.script.dial ?
279 datalink_ChoosePhoneNumber(dl) : ""))
280 log_Printf(LogWARN, "Invalid dial script\n");
281 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
283 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
284 dl->name, dl->cfg.dial.max - dl->dial.tries,
287 datalink_NewState(dl, DATALINK_CARRIER);
288 return datalink_UpdateSet(d, r, w, e, n);
290 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
292 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
293 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
295 log_Printf(LogCHAT, "Failed to open device\n");
297 if (dl->bundle->CleaningUp ||
298 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
299 dl->cfg.dial.max && dl->dial.tries == 0)) {
300 datalink_NewState(dl, DATALINK_CLOSED);
301 dl->reconnect_tries = 0;
303 log_WritePrompts(dl, "Failed to open %s\n",
304 dl->physical->name.full);
305 bundle_LinkClosed(dl->bundle, dl);
307 if (!dl->bundle->CleaningUp) {
310 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
311 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
312 dl->physical->name.full, timeout);
318 case DATALINK_CARRIER:
319 /* Wait for carrier on the device */
320 switch (physical_AwaitCarrier(dl->physical)) {
321 case CARRIER_PENDING:
322 log_Printf(LogDEBUG, "Waiting for carrier\n");
323 return 0; /* A device timer is running to wake us up again */
326 if (dl->script.run) {
327 datalink_NewState(dl, DATALINK_LOGIN);
328 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
329 log_Printf(LogWARN, "Invalid login script\n");
331 datalink_LoginDone(dl);
332 return datalink_UpdateSet(d, r, w, e, n);
335 physical_Offline(dl->physical); /* Is this required ? */
336 if (dl->script.run) {
337 datalink_NewState(dl, DATALINK_HANGUP);
338 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
339 log_Printf(LogWARN, "Invalid hangup script\n");
340 return datalink_UpdateSet(d, r, w, e, n);
342 datalink_HangupDone(dl);
343 return 0; /* Maybe bundle_CleanDatalinks() has something to do */
347 case DATALINK_HANGUP:
349 case DATALINK_LOGOUT:
351 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
352 switch (dl->chat.state) {
354 /* script succeeded */
356 case DATALINK_HANGUP:
357 datalink_HangupDone(dl);
360 datalink_NewState(dl, DATALINK_CARRIER);
361 return datalink_UpdateSet(d, r, w, e, n);
362 case DATALINK_LOGOUT:
363 datalink_NewState(dl, DATALINK_HANGUP);
364 physical_Offline(dl->physical);
365 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
366 log_Printf(LogWARN, "Invalid hangup script\n");
367 return datalink_UpdateSet(d, r, w, e, n);
369 dl->phone.alt = NULL;
370 datalink_LoginDone(dl);
371 return datalink_UpdateSet(d, r, w, e, n);
375 /* Going down - script failed */
376 log_Printf(LogWARN, "Chat script failed\n");
378 case DATALINK_HANGUP:
379 datalink_HangupDone(dl);
382 case DATALINK_LOGOUT:
384 datalink_NewState(dl, DATALINK_HANGUP);
385 physical_Offline(dl->physical);
386 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
387 log_Printf(LogWARN, "Invalid hangup script\n");
388 return datalink_UpdateSet(d, r, w, e, n);
399 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
400 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
407 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
409 return physical_RemoveFromSet(dl->physical, r, w, e);
413 datalink_IsSet(struct descriptor *d, const fd_set *fdset)
415 struct datalink *dl = descriptor2datalink(d);
418 case DATALINK_CLOSED:
419 case DATALINK_OPENING:
422 case DATALINK_HANGUP:
424 case DATALINK_LOGOUT:
426 return descriptor_IsSet(&dl->chat.desc, fdset);
433 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
434 descriptor_IsSet(&dl->physical->desc, fdset);
440 datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
442 struct datalink *dl = descriptor2datalink(d);
445 case DATALINK_CLOSED:
446 case DATALINK_OPENING:
449 case DATALINK_HANGUP:
451 case DATALINK_LOGOUT:
453 descriptor_Read(&dl->chat.desc, bundle, fdset);
461 if (descriptor_IsSet(&dl->chap.desc, fdset))
462 descriptor_Read(&dl->chap.desc, bundle, fdset);
463 if (descriptor_IsSet(&dl->physical->desc, fdset))
464 descriptor_Read(&dl->physical->desc, bundle, fdset);
470 datalink_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
472 struct datalink *dl = descriptor2datalink(d);
476 case DATALINK_CLOSED:
477 case DATALINK_OPENING:
480 case DATALINK_HANGUP:
482 case DATALINK_LOGOUT:
484 result = descriptor_Write(&dl->chat.desc, bundle, fdset);
492 if (descriptor_IsSet(&dl->chap.desc, fdset))
493 result += descriptor_Write(&dl->chap.desc, bundle, fdset);
494 if (descriptor_IsSet(&dl->physical->desc, fdset))
495 result += descriptor_Write(&dl->physical->desc, bundle, fdset);
503 datalink_ComeDown(struct datalink *dl, int how)
505 if (how != CLOSE_NORMAL) {
507 dl->reconnect_tries = 0;
508 if (dl->state >= DATALINK_READY && how == CLOSE_LCP)
512 if (dl->state >= DATALINK_READY && dl->stayonline) {
514 physical_StopDeviceTimer(dl->physical);
515 datalink_NewState(dl, DATALINK_READY);
516 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
517 physical_Offline(dl->physical);
518 if (dl->script.run && dl->state != DATALINK_OPENING) {
519 if (dl->state == DATALINK_LOGOUT) {
520 datalink_NewState(dl, DATALINK_HANGUP);
521 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
522 log_Printf(LogWARN, "Invalid hangup script\n");
524 datalink_NewState(dl, DATALINK_LOGOUT);
525 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
526 log_Printf(LogWARN, "Invalid logout script\n");
529 datalink_HangupDone(dl);
534 datalink_LayerStart(void *v, struct fsm *fp)
536 /* The given FSM is about to start up ! */
537 struct datalink *dl = (struct datalink *)v;
539 if (fp->proto == PROTO_LCP)
540 (*dl->parent->LayerStart)(dl->parent->object, fp);
544 datalink_LayerUp(void *v, struct fsm *fp)
546 /* The given fsm is now up */
547 struct datalink *dl = (struct datalink *)v;
548 struct lcp *lcp = &dl->physical->link.lcp;
550 if (fp->proto == PROTO_LCP) {
551 datalink_GotAuthname(dl, "");
552 lcp->auth_ineed = lcp->want_auth;
553 lcp->auth_iwait = lcp->his_auth;
554 if (lcp->his_auth || lcp->want_auth) {
555 if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
556 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
557 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
558 Auth2Nam(lcp->his_auth, lcp->his_authtype),
559 Auth2Nam(lcp->want_auth, lcp->want_authtype));
560 if (lcp->his_auth == PROTO_PAP)
561 auth_StartReq(&dl->pap);
562 if (lcp->want_auth == PROTO_CHAP)
563 auth_StartReq(&dl->chap.auth);
570 datalink_AuthReInit(struct datalink *dl)
572 auth_StopTimer(&dl->pap);
573 auth_StopTimer(&dl->chap.auth);
574 chap_ReInit(&dl->chap);
578 datalink_GotAuthname(struct datalink *dl, const char *name)
580 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
581 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
585 datalink_NCPUp(struct datalink *dl)
587 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
589 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
590 /* we've authenticated in multilink mode ! */
591 switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
593 /* We've handed the link off to another ppp (well, we will soon) ! */
596 /* First link in the bundle */
597 auth_Select(dl->bundle, dl->peer.authname);
598 bundle_CalculateBandwidth(dl->bundle);
601 /* We're in multilink mode ! */
602 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
603 bundle_CalculateBandwidth(dl->bundle);
606 datalink_AuthNotOk(dl);
609 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
610 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
611 datalink_NewState(dl, DATALINK_OPEN);
612 bundle_CalculateBandwidth(dl->bundle);
613 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
616 dl->bundle->ncp.mp.peer = dl->peer;
617 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link);
618 auth_Select(dl->bundle, dl->peer.authname);
622 fsm_Up(&dl->physical->link.ccp.fsm);
623 fsm_Open(&dl->physical->link.ccp.fsm);
625 datalink_NewState(dl, DATALINK_OPEN);
626 bundle_NewPhase(dl->bundle, PHASE_NETWORK);
627 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
631 datalink_CBCPComplete(struct datalink *dl)
633 datalink_NewState(dl, DATALINK_LCP);
634 datalink_AuthReInit(dl);
635 fsm_Close(&dl->physical->link.lcp.fsm);
639 datalink_CBCPFailed(struct datalink *dl)
641 cbcp_Down(&dl->cbcp);
642 datalink_CBCPComplete(dl);
646 datalink_AuthOk(struct datalink *dl)
648 if ((dl->physical->link.lcp.his_callback.opmask &
649 CALLBACK_BIT(CALLBACK_CBCP) ||
650 dl->physical->link.lcp.want_callback.opmask &
651 CALLBACK_BIT(CALLBACK_CBCP)) &&
652 !(dl->physical->link.lcp.want_callback.opmask &
653 CALLBACK_BIT(CALLBACK_AUTH))) {
654 /* We must have agreed CBCP if AUTH isn't there any more */
655 datalink_NewState(dl, DATALINK_CBCP);
657 } else if (dl->physical->link.lcp.want_callback.opmask) {
659 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
660 datalink_NewState(dl, DATALINK_LCP);
661 datalink_AuthReInit(dl);
662 fsm_Close(&dl->physical->link.lcp.fsm);
664 switch (dl->physical->link.lcp.his_callback.opmask) {
669 case CALLBACK_BIT(CALLBACK_AUTH):
670 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
671 sizeof dl->cbcp.fsm.phone);
672 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
673 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
675 *dl->cbcp.fsm.phone = '\0';
677 char *ptr = strchr(dl->cbcp.fsm.phone, ',');
679 *ptr = '\0'; /* Call back on the first number */
680 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
682 dl->cbcp.required = 1;
684 dl->cbcp.fsm.delay = 0;
685 datalink_NewState(dl, DATALINK_LCP);
686 datalink_AuthReInit(dl);
687 fsm_Close(&dl->physical->link.lcp.fsm);
690 case CALLBACK_BIT(CALLBACK_E164):
691 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
692 sizeof dl->cbcp.fsm.phone - 1);
693 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
694 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
696 dl->cbcp.required = 1;
697 dl->cbcp.fsm.delay = 0;
698 datalink_NewState(dl, DATALINK_LCP);
699 datalink_AuthReInit(dl);
700 fsm_Close(&dl->physical->link.lcp.fsm);
704 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
706 datalink_NewState(dl, DATALINK_LCP);
707 datalink_AuthReInit(dl);
708 fsm_Close(&dl->physical->link.lcp.fsm);
714 datalink_AuthNotOk(struct datalink *dl)
716 datalink_NewState(dl, DATALINK_LCP);
717 datalink_AuthReInit(dl);
718 fsm_Close(&dl->physical->link.lcp.fsm);
722 datalink_LayerDown(void *v, struct fsm *fp)
724 /* The given FSM has been told to come down */
725 struct datalink *dl = (struct datalink *)v;
727 if (fp->proto == PROTO_LCP) {
730 peerid_Init(&dl->peer);
731 fsm2initial(&dl->physical->link.ccp.fsm);
732 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
733 (*dl->parent->LayerDown)(dl->parent->object, fp);
734 /* fall through (just in case) */
737 if (!dl->cbcp.required)
738 cbcp_Down(&dl->cbcp);
739 /* fall through (just in case) */
742 timer_Stop(&dl->pap.authtimer);
743 timer_Stop(&dl->chap.auth.authtimer);
745 datalink_NewState(dl, DATALINK_LCP);
746 datalink_AuthReInit(dl);
751 datalink_LayerFinish(void *v, struct fsm *fp)
753 /* The given fsm is now down */
754 struct datalink *dl = (struct datalink *)v;
756 if (fp->proto == PROTO_LCP) {
758 (*dl->parent->LayerFinish)(dl->parent->object, fp);
759 datalink_ComeDown(dl, CLOSE_NORMAL);
760 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
761 fsm_Open(fp); /* CCP goes to ST_STOPPED */
765 datalink_Create(const char *name, struct bundle *bundle, int type)
769 dl = (struct datalink *)malloc(sizeof(struct datalink));
773 dl->desc.type = DATALINK_DESCRIPTOR;
774 dl->desc.UpdateSet = datalink_UpdateSet;
775 dl->desc.IsSet = datalink_IsSet;
776 dl->desc.Read = datalink_Read;
777 dl->desc.Write = datalink_Write;
779 dl->state = DATALINK_CLOSED;
781 *dl->cfg.script.dial = '\0';
782 *dl->cfg.script.login = '\0';
783 *dl->cfg.script.logout = '\0';
784 *dl->cfg.script.hangup = '\0';
785 *dl->cfg.phone.list = '\0';
786 *dl->phone.list = '\0';
787 dl->phone.next = NULL;
788 dl->phone.alt = NULL;
789 dl->phone.chosen = "N/A";
792 dl->script.packetmode = 1;
793 mp_linkInit(&dl->mp);
798 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
801 dl->cfg.dial.max = 1;
802 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
803 dl->cfg.dial.timeout = DIAL_TIMEOUT;
804 dl->cfg.dial.inc = 0;
805 dl->cfg.dial.maxinc = 10;
807 dl->reconnect_tries = 0;
808 dl->cfg.reconnect.max = 0;
809 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
811 dl->cfg.callback.opmask = 0;
812 dl->cfg.cbcp.delay = 0;
813 *dl->cfg.cbcp.phone = '\0';
814 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
816 dl->name = strdup(name);
817 peerid_Init(&dl->peer);
818 dl->parent = &bundle->fsm;
819 dl->fsmp.LayerStart = datalink_LayerStart;
820 dl->fsmp.LayerUp = datalink_LayerUp;
821 dl->fsmp.LayerDown = datalink_LayerDown;
822 dl->fsmp.LayerFinish = datalink_LayerFinish;
823 dl->fsmp.object = dl;
825 if ((dl->physical = physical_Create(dl, type)) == NULL) {
831 pap_Init(&dl->pap, dl->physical);
832 chap_Init(&dl->chap, dl->physical);
833 cbcp_Init(&dl->cbcp, dl->physical);
835 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
836 chat_Init(&dl->chat, dl->physical);
838 log_Printf(LogPHASE, "%s: Created in %s state\n",
839 dl->name, datalink_State(dl));
845 datalink_Clone(struct datalink *odl, const char *name)
849 dl = (struct datalink *)malloc(sizeof(struct datalink));
853 dl->desc.type = DATALINK_DESCRIPTOR;
854 dl->desc.UpdateSet = datalink_UpdateSet;
855 dl->desc.IsSet = datalink_IsSet;
856 dl->desc.Read = datalink_Read;
857 dl->desc.Write = datalink_Write;
859 dl->state = DATALINK_CLOSED;
861 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
862 mp_linkInit(&dl->mp);
863 *dl->phone.list = '\0';
864 dl->phone.next = NULL;
865 dl->phone.alt = NULL;
866 dl->phone.chosen = "N/A";
867 dl->bundle = odl->bundle;
869 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
871 dl->reconnect_tries = 0;
872 dl->name = strdup(name);
873 peerid_Init(&dl->peer);
874 dl->parent = odl->parent;
875 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
876 dl->fsmp.object = dl;
878 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
883 pap_Init(&dl->pap, dl->physical);
884 dl->pap.cfg = odl->pap.cfg;
886 chap_Init(&dl->chap, dl->physical);
887 dl->chap.auth.cfg = odl->chap.auth.cfg;
889 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
890 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
891 sizeof dl->physical->link.lcp.cfg);
892 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
893 sizeof dl->physical->link.ccp.cfg);
894 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
895 sizeof dl->physical->async.cfg);
897 cbcp_Init(&dl->cbcp, dl->physical);
899 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
900 chat_Init(&dl->chat, dl->physical);
902 log_Printf(LogPHASE, "%s: Cloned in %s state\n",
903 dl->name, datalink_State(dl));
909 datalink_Destroy(struct datalink *dl)
911 struct datalink *result;
913 if (dl->state != DATALINK_CLOSED) {
914 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
917 case DATALINK_HANGUP:
920 chat_Finish(&dl->chat); /* Gotta blat the timers ! */
925 chat_Destroy(&dl->chat);
926 timer_Stop(&dl->dial.timer);
928 physical_Destroy(dl->physical);
936 datalink_Up(struct datalink *dl, int runscripts, int packetmode)
938 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
943 case DATALINK_CLOSED:
944 if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
945 bundle_Phase(dl->bundle) == PHASE_TERMINATE)
946 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
947 datalink_NewState(dl, DATALINK_OPENING);
948 dl->reconnect_tries =
949 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
950 dl->dial.tries = dl->cfg.dial.max;
951 dl->script.run = runscripts;
952 dl->script.packetmode = packetmode;
955 case DATALINK_OPENING:
956 if (!dl->script.run && runscripts)
963 if (!dl->script.packetmode && packetmode) {
964 dl->script.packetmode = 1;
965 if (dl->state == DATALINK_READY)
966 datalink_LoginDone(dl);
973 datalink_Close(struct datalink *dl, int how)
978 peerid_Init(&dl->peer);
979 fsm2initial(&dl->physical->link.ccp.fsm);
985 datalink_AuthReInit(dl);
986 fsm_Close(&dl->physical->link.lcp.fsm);
987 if (how != CLOSE_NORMAL) {
989 dl->reconnect_tries = 0;
990 if (how == CLOSE_LCP)
996 datalink_ComeDown(dl, how);
1001 datalink_Down(struct datalink *dl, int how)
1003 /* Carrier is lost */
1004 switch (dl->state) {
1006 peerid_Init(&dl->peer);
1007 fsm2initial(&dl->physical->link.ccp.fsm);
1013 fsm2initial(&dl->physical->link.lcp.fsm);
1017 datalink_ComeDown(dl, how);
1022 datalink_StayDown(struct datalink *dl)
1024 dl->reconnect_tries = 0;
1028 datalink_DontHangup(struct datalink *dl)
1030 if (dl->state >= DATALINK_LCP)
1035 datalink_Show(struct cmdargs const *arg)
1037 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
1038 prompt_Printf(arg->prompt, " State: %s\n",
1039 datalink_State(arg->cx));
1040 prompt_Printf(arg->prompt, " Peer name: ");
1041 if (*arg->cx->peer.authname)
1042 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
1043 else if (arg->cx->state == DATALINK_OPEN)
1044 prompt_Printf(arg->prompt, "None requested\n");
1046 prompt_Printf(arg->prompt, "N/A\n");
1047 prompt_Printf(arg->prompt, " Discriminator: %s\n",
1048 mp_Enddisc(arg->cx->peer.enddisc.class,
1049 arg->cx->peer.enddisc.address,
1050 arg->cx->peer.enddisc.len));
1052 prompt_Printf(arg->prompt, "\nDefaults:\n");
1053 prompt_Printf(arg->prompt, " Phone List: %s\n",
1054 arg->cx->cfg.phone.list);
1055 if (arg->cx->cfg.dial.max)
1056 prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
1057 arg->cx->cfg.dial.max);
1059 prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
1060 if (arg->cx->cfg.dial.next_timeout >= 0)
1061 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
1063 prompt_Printf(arg->prompt, "random/");
1064 if (arg->cx->cfg.dial.timeout >= 0)
1065 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
1067 prompt_Printf(arg->prompt, "random\n");
1068 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
1069 arg->cx->cfg.reconnect.max);
1070 if (arg->cx->cfg.reconnect.timeout > 0)
1071 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
1073 prompt_Printf(arg->prompt, "random\n");
1074 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
1075 PHYS_DIRECT ? "accepted: " : "requested:");
1076 if (!arg->cx->cfg.callback.opmask)
1077 prompt_Printf(arg->prompt, "none\n");
1081 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
1082 prompt_Printf(arg->prompt, "none");
1085 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
1086 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
1089 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
1090 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
1091 if (arg->cx->physical->type != PHYS_DIRECT)
1092 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
1095 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
1096 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
1097 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
1098 arg->cx->cfg.cbcp.delay);
1099 prompt_Printf(arg->prompt, " phone: ");
1100 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
1101 if (arg->cx->physical->type & PHYS_DIRECT)
1102 prompt_Printf(arg->prompt, "Caller decides\n");
1104 prompt_Printf(arg->prompt, "Dialback server decides\n");
1106 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
1107 prompt_Printf(arg->prompt, " timeout: %lds\n",
1108 arg->cx->cfg.cbcp.fsmretry);
1110 prompt_Printf(arg->prompt, "\n");
1113 prompt_Printf(arg->prompt, " Dial Script: %s\n",
1114 arg->cx->cfg.script.dial);
1115 prompt_Printf(arg->prompt, " Login Script: %s\n",
1116 arg->cx->cfg.script.login);
1117 prompt_Printf(arg->prompt, " Logout Script: %s\n",
1118 arg->cx->cfg.script.logout);
1119 prompt_Printf(arg->prompt, " Hangup Script: %s\n",
1120 arg->cx->cfg.script.hangup);
1125 datalink_SetReconnect(struct cmdargs const *arg)
1127 if (arg->argc == arg->argn+2) {
1128 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
1129 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
1136 datalink_SetRedial(struct cmdargs const *arg)
1138 const char *sep, *osep;
1139 int timeout, inc, maxinc, tries;
1141 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
1142 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
1143 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
1144 arg->cx->cfg.dial.timeout = -1;
1147 timeout = atoi(arg->argv[arg->argn]);
1150 arg->cx->cfg.dial.timeout = timeout;
1152 log_Printf(LogWARN, "Invalid redial timeout\n");
1157 sep = strchr(arg->argv[arg->argn], '+');
1162 arg->cx->cfg.dial.inc = inc;
1164 log_Printf(LogWARN, "Invalid timeout increment\n");
1167 sep = strchr(sep, '-');
1169 maxinc = atoi(++sep);
1171 arg->cx->cfg.dial.maxinc = maxinc;
1173 log_Printf(LogWARN, "Invalid maximum timeout increments\n");
1177 /* Default timeout increment */
1178 arg->cx->cfg.dial.maxinc = 10;
1182 /* Default timeout increment & max increment */
1183 arg->cx->cfg.dial.inc = 0;
1184 arg->cx->cfg.dial.maxinc = 10;
1185 sep = arg->argv[arg->argn];
1188 sep = strchr(sep, '.');
1190 if (strcasecmp(++sep, "random") == 0) {
1191 arg->cx->cfg.dial.next_timeout = -1;
1194 timeout = atoi(sep);
1196 arg->cx->cfg.dial.next_timeout = timeout;
1198 log_Printf(LogWARN, "Invalid next redial timeout\n");
1203 /* Default next timeout */
1204 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
1206 if (arg->argc == arg->argn+2) {
1207 tries = atoi(arg->argv[arg->argn+1]);
1210 arg->cx->cfg.dial.max = tries;
1212 log_Printf(LogWARN, "Invalid retry value\n");
1222 static const char * const states[] = {
1238 datalink_State(struct datalink *dl)
1240 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
1242 return states[dl->state];
1246 datalink_NewState(struct datalink *dl, int state)
1248 if (state != dl->state) {
1249 if (state >= 0 && state < sizeof states / sizeof states[0]) {
1250 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
1254 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
1259 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
1260 int fd, int *auxfd, int *nauxfd)
1262 struct datalink *dl, *cdl;
1263 struct fsm_retry copy;
1266 dl = (struct datalink *)iov[(*niov)++].iov_base;
1267 dl->name = iov[*niov].iov_base;
1269 if (dl->name[DATALINK_MAXNAME-1]) {
1270 dl->name[DATALINK_MAXNAME-1] = '\0';
1271 if (strlen(dl->name) == DATALINK_MAXNAME - 1)
1272 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
1275 /* Make sure the name is unique ! */
1278 for (cdl = bundle->links; cdl; cdl = cdl->next)
1279 if (!strcasecmp(dl->name, cdl->name)) {
1281 free(datalink_NextName(dl));
1283 oname = datalink_NextName(dl);
1284 break; /* Keep renaming 'till we have no conflicts */
1289 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
1292 dl->name = strdup(dl->name);
1293 free(iov[*niov].iov_base);
1297 dl->desc.type = DATALINK_DESCRIPTOR;
1298 dl->desc.UpdateSet = datalink_UpdateSet;
1299 dl->desc.IsSet = datalink_IsSet;
1300 dl->desc.Read = datalink_Read;
1301 dl->desc.Write = datalink_Write;
1303 mp_linkInit(&dl->mp);
1304 *dl->phone.list = '\0';
1305 dl->phone.next = NULL;
1306 dl->phone.alt = NULL;
1307 dl->phone.chosen = "N/A";
1309 dl->bundle = bundle;
1311 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
1313 dl->reconnect_tries = 0;
1314 dl->parent = &bundle->fsm;
1315 dl->fsmp.LayerStart = datalink_LayerStart;
1316 dl->fsmp.LayerUp = datalink_LayerUp;
1317 dl->fsmp.LayerDown = datalink_LayerDown;
1318 dl->fsmp.LayerFinish = datalink_LayerFinish;
1319 dl->fsmp.object = dl;
1321 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
1323 if (!dl->physical) {
1328 copy = dl->pap.cfg.fsm;
1329 pap_Init(&dl->pap, dl->physical);
1330 dl->pap.cfg.fsm = copy;
1332 copy = dl->chap.auth.cfg.fsm;
1333 chap_Init(&dl->chap, dl->physical);
1334 dl->chap.auth.cfg.fsm = copy;
1336 cbcp_Init(&dl->cbcp, dl->physical);
1338 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
1339 chat_Init(&dl->chat, dl->physical);
1341 log_Printf(LogPHASE, "%s: Transferred in %s state\n",
1342 dl->name, datalink_State(dl));
1349 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
1350 int *auxfd, int *nauxfd)
1352 /* If `dl' is NULL, we're allocating before a Fromiov() */
1356 timer_Stop(&dl->dial.timer);
1357 /* The following is purely for the sake of paranoia */
1358 cbcp_Down(&dl->cbcp);
1359 timer_Stop(&dl->pap.authtimer);
1360 timer_Stop(&dl->chap.auth.authtimer);
1363 if (*niov >= maxiov - 1) {
1364 log_Printf(LogERROR, "Toiov: No room for datalink !\n");
1372 iov[*niov].iov_base = (void *)dl;
1373 iov[(*niov)++].iov_len = sizeof *dl;
1374 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
1375 iov[(*niov)++].iov_len = DATALINK_MAXNAME;
1377 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
1380 if (link_fd == -1 && dl) {
1389 datalink_Rename(struct datalink *dl, const char *name)
1392 dl->physical->link.name = dl->name = strdup(name);
1396 datalink_NextName(struct datalink *dl)
1401 n = strlen(dl->name);
1402 name = (char *)malloc(n+3);
1403 for (f = n - 1; f >= 0; f--)
1404 if (!isdigit(dl->name[f]))
1406 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
1407 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
1410 /* our physical link name isn't updated (it probably isn't created yet) */
1415 datalink_SetMode(struct datalink *dl, int mode)
1417 if (!physical_SetMode(dl->physical, mode))
1419 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
1421 if (dl->physical->type == PHYS_DIRECT)
1422 dl->reconnect_tries = 0;
1423 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
1424 dl->state <= DATALINK_READY)
1425 datalink_Up(dl, 1, 1);
1430 datalink_GetDialTimeout(struct datalink *dl)
1432 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
1434 if (dl->dial.incs < dl->cfg.dial.maxinc)