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 *
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26 * $Id: datalink.c,v 1.3 1998/05/23 13:38:06 brian Exp $
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26 * $Id: datalink.c,v 1.4 1998/05/23 22:24:33 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#include <unistd.h> 42 43#include "mbuf.h" 44#include "log.h" 45#include "defs.h" 46#include "timer.h" 47#include "fsm.h" 48#include "lcp.h" 49#include "descriptor.h" 50#include "lqr.h" 51#include "hdlc.h" 52#include "async.h" 53#include "throughput.h" 54#include "ccp.h" 55#include "link.h" 56#include "physical.h" 57#include "iplist.h" 58#include "slcompress.h" 59#include "ipcp.h" 60#include "filter.h" 61#include "mp.h" 62#include "bundle.h" 63#include "chat.h" 64#include "auth.h" 65#include "modem.h" 66#include "prompt.h" 67#include "lcpproto.h" 68#include "pap.h" 69#include "chap.h" 70#include "command.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->bundle->CleaningUp || 120 (dl->physical->type == PHYS_DIRECT) || 121 ((!dl->dial_tries || (dl->dial_tries < 0 && !dl->reconnect_tries)) && 122 !(dl->physical->type & (PHYS_PERM|PHYS_DEDICATED)))) { 123 datalink_NewState(dl, DATALINK_CLOSED); 124 dl->dial_tries = -1; 125 dl->reconnect_tries = 0; 126 bundle_LinkClosed(dl->bundle, dl); 127 if (!dl->bundle->CleaningUp) 128 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 129 } else { 130 datalink_NewState(dl, DATALINK_OPENING); 131 if (dl->dial_tries < 0) { 132 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout); 133 dl->dial_tries = dl->cfg.dial.max; 134 dl->reconnect_tries--; 135 } else { 136 if (dl->phone.next == NULL) 137 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 138 else 139 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 140 } 141 } 142} 143 144static const char * 145datalink_ChoosePhoneNumber(struct datalink *dl) 146{ 147 char *phone; 148 149 if (dl->phone.alt == NULL) { 150 if (dl->phone.next == NULL) { 151 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1); 152 dl->phone.list[sizeof dl->phone.list - 1] = '\0'; 153 dl->phone.next = dl->phone.list; 154 } 155 dl->phone.alt = strsep(&dl->phone.next, ":"); 156 } 157 phone = strsep(&dl->phone.alt, "|"); 158 dl->phone.chosen = *phone ? phone : "[NONE]"; 159 if (*phone) 160 log_Printf(LogPHASE, "Phone: %s\n", phone); 161 return phone; 162} 163 164static void 165datalink_LoginDone(struct datalink *dl) 166{ 167 if (!dl->script.packetmode) { 168 dl->dial_tries = -1; 169 datalink_NewState(dl, DATALINK_READY); 170 } else if (modem_Raw(dl->physical, dl->bundle) < 0) { 171 dl->dial_tries = 0; 172 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 173 if (dl->script.run) { 174 datalink_NewState(dl, DATALINK_HANGUP); 175 modem_Offline(dl->physical); 176 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 177 } else { 178 if (dl->physical->type == PHYS_DEDICATED) 179 /* force a redial timeout */ 180 modem_Close(dl->physical); 181 datalink_HangupDone(dl); 182 } 183 } else { 184 dl->dial_tries = -1; 185 186 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 187 async_Init(&dl->physical->async); 188 189 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 190 0 : dl->physical->link.lcp.cfg.openmode); 191 ccp_Setup(&dl->physical->link.ccp); 192 193 datalink_NewState(dl, DATALINK_LCP); 194 fsm_Up(&dl->physical->link.lcp.fsm); 195 fsm_Open(&dl->physical->link.lcp.fsm); 196 } 197} 198 199static int 200datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, 201 int *n) 202{ 203 struct datalink *dl = descriptor2datalink(d); 204 int result; 205 206 result = 0; 207 switch (dl->state) { 208 case DATALINK_CLOSED: 209 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_1OFF)) && 210 !bundle_IsDead(dl->bundle)) 211 /* 212 * Our first time in - DEDICATED never comes down, and STDIN & 1OFF 213 * get deleted when they enter DATALINK_CLOSED. Go to 214 * DATALINK_OPENING via datalink_Up() and fall through. 215 */ 216 datalink_Up(dl, 1, 1); 217 else 218 break; 219 /* fall through */ 220 221 case DATALINK_OPENING: 222 if (dl->dial_timer.state != TIMER_RUNNING) { 223 if (--dl->dial_tries < 0) 224 dl->dial_tries = 0; 225 if (modem_Open(dl->physical, dl->bundle) >= 0) { 226 if (dl->script.run) { 227 datalink_NewState(dl, DATALINK_DIAL); 228 chat_Init(&dl->chat, dl->physical, dl->cfg.script.dial, 1, 229 datalink_ChoosePhoneNumber(dl)); 230 if (!(dl->physical->type & (PHYS_PERM|PHYS_DEDICATED)) && 231 dl->cfg.dial.max) 232 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 233 dl->name, dl->cfg.dial.max - dl->dial_tries, 234 dl->cfg.dial.max); 235 return datalink_UpdateSet(d, r, w, e, n); 236 } else 237 datalink_LoginDone(dl); 238 } else { 239 if (!(dl->physical->type & (PHYS_PERM|PHYS_DEDICATED)) && 240 dl->cfg.dial.max) 241 log_Printf(LogCHAT, "Failed to open modem (attempt %u of %d)\n", 242 dl->cfg.dial.max - dl->dial_tries, dl->cfg.dial.max); 243 else 244 log_Printf(LogCHAT, "Failed to open modem\n"); 245 246 if (dl->bundle->CleaningUp || 247 (!(dl->physical->type & (PHYS_PERM|PHYS_DEDICATED)) && 248 dl->cfg.dial.max && dl->dial_tries == 0)) { 249 datalink_NewState(dl, DATALINK_CLOSED); 250 dl->reconnect_tries = 0; 251 dl->dial_tries = -1; 252 bundle_LinkClosed(dl->bundle, dl); 253 } 254 if (!dl->bundle->CleaningUp) 255 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 256 } 257 } 258 break; 259 260 case DATALINK_HANGUP: 261 case DATALINK_DIAL: 262 case DATALINK_LOGIN: 263 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 264 switch (dl->chat.state) { 265 case CHAT_DONE: 266 /* script succeeded */ 267 chat_Destroy(&dl->chat); 268 switch(dl->state) { 269 case DATALINK_HANGUP: 270 datalink_HangupDone(dl); 271 break; 272 case DATALINK_DIAL: 273 datalink_NewState(dl, DATALINK_LOGIN); 274 chat_Init(&dl->chat, dl->physical, dl->cfg.script.login, 0, NULL); 275 return datalink_UpdateSet(d, r, w, e, n); 276 case DATALINK_LOGIN: 277 datalink_LoginDone(dl); 278 break; 279 } 280 break; 281 case CHAT_FAILED: 282 /* Going down - script failed */ 283 log_Printf(LogWARN, "Chat script failed\n"); 284 chat_Destroy(&dl->chat); 285 switch(dl->state) { 286 case DATALINK_HANGUP: 287 datalink_HangupDone(dl); 288 break; 289 case DATALINK_DIAL: 290 case DATALINK_LOGIN: 291 datalink_NewState(dl, DATALINK_HANGUP); 292 modem_Offline(dl->physical); 293 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 294 return datalink_UpdateSet(d, r, w, e, n); 295 } 296 break; 297 } 298 break; 299 300 case DATALINK_READY: 301 case DATALINK_LCP: 302 case DATALINK_AUTH: 303 case DATALINK_OPEN: 304 result = descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 305 break; 306 } 307 return result; 308} 309 310int 311datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 312{ 313 return physical_RemoveFromSet(dl->physical, r, w, e); 314} 315 316static int 317datalink_IsSet(struct descriptor *d, const fd_set *fdset) 318{ 319 struct datalink *dl = descriptor2datalink(d); 320 321 switch (dl->state) { 322 case DATALINK_CLOSED: 323 case DATALINK_OPENING: 324 break; 325 326 case DATALINK_HANGUP: 327 case DATALINK_DIAL: 328 case DATALINK_LOGIN: 329 return descriptor_IsSet(&dl->chat.desc, fdset); 330 331 case DATALINK_READY: 332 case DATALINK_LCP: 333 case DATALINK_AUTH: 334 case DATALINK_OPEN: 335 return descriptor_IsSet(&dl->physical->desc, fdset); 336 } 337 return 0; 338} 339 340static void 341datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 342{ 343 struct datalink *dl = descriptor2datalink(d); 344 345 switch (dl->state) { 346 case DATALINK_CLOSED: 347 case DATALINK_OPENING: 348 break; 349 350 case DATALINK_HANGUP: 351 case DATALINK_DIAL: 352 case DATALINK_LOGIN: 353 descriptor_Read(&dl->chat.desc, bundle, fdset); 354 break; 355 356 case DATALINK_READY: 357 case DATALINK_LCP: 358 case DATALINK_AUTH: 359 case DATALINK_OPEN: 360 descriptor_Read(&dl->physical->desc, bundle, fdset); 361 break; 362 } 363} 364 365static void 366datalink_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 367{ 368 struct datalink *dl = descriptor2datalink(d); 369 370 switch (dl->state) { 371 case DATALINK_CLOSED: 372 case DATALINK_OPENING: 373 break; 374 375 case DATALINK_HANGUP: 376 case DATALINK_DIAL: 377 case DATALINK_LOGIN: 378 descriptor_Write(&dl->chat.desc, bundle, fdset); 379 break; 380 381 case DATALINK_READY: 382 case DATALINK_LCP: 383 case DATALINK_AUTH: 384 case DATALINK_OPEN: 385 descriptor_Write(&dl->physical->desc, bundle, fdset); 386 break; 387 } 388} 389 390static void 391datalink_ComeDown(struct datalink *dl, int stay) 392{ 393 if (stay) { 394 dl->dial_tries = -1; 395 dl->reconnect_tries = 0; 396 } 397 398 if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 399 modem_Offline(dl->physical); 400 if (dl->script.run && dl->state != DATALINK_OPENING) { 401 datalink_NewState(dl, DATALINK_HANGUP); 402 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 403 } else 404 datalink_HangupDone(dl); 405 } 406} 407 408static void 409datalink_LayerStart(void *v, struct fsm *fp) 410{ 411 /* The given FSM is about to start up ! */ 412 struct datalink *dl = (struct datalink *)v; 413 414 if (fp->proto == PROTO_LCP) 415 (*dl->parent->LayerStart)(dl->parent->object, fp); 416} 417 418static void 419datalink_LayerUp(void *v, struct fsm *fp) 420{ 421 /* The given fsm is now up */ 422 struct datalink *dl = (struct datalink *)v; 423 424 if (fp->proto == PROTO_LCP) { 425 datalink_GotAuthname(dl, "", 0); 426 dl->physical->link.lcp.auth_ineed = dl->physical->link.lcp.want_auth; 427 dl->physical->link.lcp.auth_iwait = dl->physical->link.lcp.his_auth; 428 if (dl->physical->link.lcp.his_auth || dl->physical->link.lcp.want_auth) { 429 if (bundle_Phase(dl->bundle) == PHASE_ESTABLISH) 430 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 431 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 432 Auth2Nam(dl->physical->link.lcp.his_auth), 433 Auth2Nam(dl->physical->link.lcp.want_auth)); 434 if (dl->physical->link.lcp.his_auth == PROTO_PAP) 435 auth_StartChallenge(&dl->pap, dl->physical, pap_SendChallenge); 436 if (dl->physical->link.lcp.want_auth == PROTO_CHAP) 437 auth_StartChallenge(&dl->chap.auth, dl->physical, chap_SendChallenge); 438 } else 439 datalink_AuthOk(dl); 440 } 441} 442 443void 444datalink_GotAuthname(struct datalink *dl, const char *name, int len) 445{ 446 if (len >= sizeof dl->peer.authname) 447 len = sizeof dl->peer.authname - 1; 448 strncpy(dl->peer.authname, name, len); 449 dl->peer.authname[len] = '\0'; 450} 451 452void 453datalink_AuthOk(struct datalink *dl) 454{ 455 ccp_SetOpenMode(&dl->physical->link.ccp); 456 457 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 458 /* we've authenticated in multilink mode ! */ 459 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 460 case MP_LINKSENT: 461 /* We've handed the link off to another ppp (well, we will soon) ! */ 462 return; 463 case MP_UP: 464 /* First link in the bundle */ 465 auth_Select(dl->bundle, dl->peer.authname, dl->physical); 466 /* fall through */ 467 case MP_ADDED: 468 /* We're in multilink mode ! */ 469 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 470 break; 471 case MP_FAILED: 472 datalink_AuthNotOk(dl); 473 return; 474 } 475 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 476 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 477 datalink_AuthNotOk(dl); 478 return; 479 } else { 480 dl->bundle->ncp.mp.peer = dl->peer; 481 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link); 482 auth_Select(dl->bundle, dl->peer.authname, dl->physical); 483 } 484 485 fsm_Up(&dl->physical->link.ccp.fsm); 486 fsm_Open(&dl->physical->link.ccp.fsm); 487 datalink_NewState(dl, DATALINK_OPEN); 488 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 489 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 490} 491 492void 493datalink_AuthNotOk(struct datalink *dl) 494{ 495 datalink_NewState(dl, DATALINK_LCP); 496 fsm_Close(&dl->physical->link.lcp.fsm); 497} 498 499static void 500datalink_LayerDown(void *v, struct fsm *fp) 501{ 502 /* The given FSM has been told to come down */ 503 struct datalink *dl = (struct datalink *)v; 504 505 if (fp->proto == PROTO_LCP) { 506 switch (dl->state) { 507 case DATALINK_OPEN: 508 peerid_Init(&dl->peer); 509 fsm_Down(&dl->physical->link.ccp.fsm); 510 fsm_Close(&dl->physical->link.ccp.fsm); 511 (*dl->parent->LayerDown)(dl->parent->object, fp); 512 /* fall through */ 513 514 case DATALINK_AUTH: 515 timer_Stop(&dl->pap.authtimer); 516 timer_Stop(&dl->chap.auth.authtimer); 517 } 518 datalink_NewState(dl, DATALINK_LCP); 519 } 520} 521 522static void 523datalink_LayerFinish(void *v, struct fsm *fp) 524{ 525 /* The given fsm is now down */ 526 struct datalink *dl = (struct datalink *)v; 527 528 if (fp->proto == PROTO_LCP) {
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529 fsm_Down(fp); /* Bring us to INITIAL or STARTING */
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529 if (fp->state == ST_STOPPED) 530 fsm_Close(fp); /* back to CLOSED */ 531 fsm_Down(fp); /* Bring us to INITIAL or STARTING */ |
532 (*dl->parent->LayerFinish)(dl->parent->object, fp); 533 datalink_ComeDown(dl, 0); 534 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 535 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 536} 537 538struct datalink * 539datalink_Create(const char *name, struct bundle *bundle, int type) 540{ 541 struct datalink *dl; 542 543 dl = (struct datalink *)malloc(sizeof(struct datalink)); 544 if (dl == NULL) 545 return dl; 546 547 dl->desc.type = DATALINK_DESCRIPTOR; 548 dl->desc.UpdateSet = datalink_UpdateSet; 549 dl->desc.IsSet = datalink_IsSet; 550 dl->desc.Read = datalink_Read; 551 dl->desc.Write = datalink_Write; 552 553 dl->state = DATALINK_CLOSED; 554 555 *dl->cfg.script.dial = '\0'; 556 *dl->cfg.script.login = '\0'; 557 *dl->cfg.script.hangup = '\0'; 558 *dl->cfg.phone.list = '\0'; 559 *dl->phone.list = '\0'; 560 dl->phone.next = NULL; 561 dl->phone.alt = NULL; 562 dl->phone.chosen = "N/A"; 563 dl->script.run = 1; 564 dl->script.packetmode = 1; 565 mp_linkInit(&dl->mp); 566 567 dl->bundle = bundle; 568 dl->next = NULL; 569 570 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 571 572 dl->dial_tries = 0; 573 dl->cfg.dial.max = 1; 574 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 575 dl->cfg.dial.timeout = DIAL_TIMEOUT; 576 577 dl->reconnect_tries = 0; 578 dl->cfg.reconnect.max = 0; 579 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 580 581 dl->name = strdup(name); 582 peerid_Init(&dl->peer); 583 dl->parent = &bundle->fsm; 584 dl->fsmp.LayerStart = datalink_LayerStart; 585 dl->fsmp.LayerUp = datalink_LayerUp; 586 dl->fsmp.LayerDown = datalink_LayerDown; 587 dl->fsmp.LayerFinish = datalink_LayerFinish; 588 dl->fsmp.object = dl; 589 590 auth_Init(&dl->pap); 591 auth_Init(&dl->chap.auth); 592 593 if ((dl->physical = modem_Create(dl, type)) == NULL) { 594 free(dl->name); 595 free(dl); 596 return NULL; 597 } 598 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 599 600 log_Printf(LogPHASE, "%s: Created in %s state\n", 601 dl->name, datalink_State(dl)); 602 603 return dl; 604} 605 606struct datalink * 607datalink_Clone(struct datalink *odl, const char *name) 608{ 609 struct datalink *dl; 610 611 dl = (struct datalink *)malloc(sizeof(struct datalink)); 612 if (dl == NULL) 613 return dl; 614 615 dl->desc.type = DATALINK_DESCRIPTOR; 616 dl->desc.UpdateSet = datalink_UpdateSet; 617 dl->desc.IsSet = datalink_IsSet; 618 dl->desc.Read = datalink_Read; 619 dl->desc.Write = datalink_Write; 620 621 dl->state = DATALINK_CLOSED; 622 623 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 624 mp_linkInit(&dl->mp); 625 *dl->phone.list = '\0'; 626 dl->phone.next = NULL; 627 dl->phone.alt = NULL; 628 dl->phone.chosen = "N/A"; 629 dl->bundle = odl->bundle; 630 dl->next = NULL; 631 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 632 dl->dial_tries = 0; 633 dl->reconnect_tries = 0; 634 dl->name = strdup(name); 635 peerid_Init(&dl->peer); 636 dl->parent = odl->parent; 637 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 638 dl->fsmp.object = dl; 639 auth_Init(&dl->pap); 640 dl->pap.cfg.fsmretry = odl->pap.cfg.fsmretry; 641 642 auth_Init(&dl->chap.auth); 643 dl->chap.auth.cfg.fsmretry = odl->chap.auth.cfg.fsmretry; 644 645 if ((dl->physical = modem_Create(dl, PHYS_MANUAL)) == NULL) { 646 free(dl->name); 647 free(dl); 648 return NULL; 649 } 650 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 651 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 652 sizeof dl->physical->link.lcp.cfg); 653 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 654 sizeof dl->physical->link.ccp.cfg); 655 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 656 sizeof dl->physical->async.cfg); 657 658 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 659 660 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 661 dl->name, datalink_State(dl)); 662 663 return dl; 664} 665 666struct datalink * 667datalink_Destroy(struct datalink *dl) 668{ 669 struct datalink *result; 670 671 if (dl->state != DATALINK_CLOSED) { 672 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 673 datalink_State(dl)); 674 switch (dl->state) { 675 case DATALINK_HANGUP: 676 case DATALINK_DIAL: 677 case DATALINK_LOGIN: 678 chat_Destroy(&dl->chat); /* Gotta blat the timers ! */ 679 break; 680 } 681 } 682 683 result = dl->next; 684 modem_Destroy(dl->physical); 685 free(dl->name); 686 free(dl); 687 688 return result; 689} 690 691void 692datalink_Up(struct datalink *dl, int runscripts, int packetmode) 693{ 694 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 695 /* Ignore scripts */ 696 runscripts = 0; 697 698 switch (dl->state) { 699 case DATALINK_CLOSED: 700 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 701 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 702 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 703 datalink_NewState(dl, DATALINK_OPENING); 704 dl->reconnect_tries = 705 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 706 dl->dial_tries = dl->cfg.dial.max; 707 dl->script.run = runscripts; 708 dl->script.packetmode = packetmode; 709 break; 710 711 case DATALINK_OPENING: 712 if (!dl->script.run && runscripts) 713 dl->script.run = 1; 714 /* fall through */ 715 716 case DATALINK_DIAL: 717 case DATALINK_LOGIN: 718 case DATALINK_READY: 719 if (!dl->script.packetmode && packetmode) { 720 dl->script.packetmode = 1; 721 if (dl->state == DATALINK_READY) 722 datalink_LoginDone(dl); 723 } 724 break; 725 } 726} 727 728void 729datalink_Close(struct datalink *dl, int stay) 730{ 731 /* Please close */ 732 switch (dl->state) { 733 case DATALINK_OPEN: 734 peerid_Init(&dl->peer); 735 fsm_Down(&dl->physical->link.ccp.fsm); 736 fsm_Close(&dl->physical->link.ccp.fsm); 737 /* fall through */ 738 739 case DATALINK_AUTH: 740 case DATALINK_LCP: 741 fsm_Close(&dl->physical->link.lcp.fsm); 742 if (stay) { 743 dl->dial_tries = -1; 744 dl->reconnect_tries = 0; 745 } 746 break; 747 748 default: 749 datalink_ComeDown(dl, stay); 750 } 751} 752 753void 754datalink_Down(struct datalink *dl, int stay) 755{ 756 /* Carrier is lost */ 757 switch (dl->state) { 758 case DATALINK_OPEN: 759 peerid_Init(&dl->peer); 760 fsm_Down(&dl->physical->link.ccp.fsm); 761 fsm_Close(&dl->physical->link.ccp.fsm); 762 /* fall through */ 763 764 case DATALINK_AUTH: 765 case DATALINK_LCP:
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766 if (dl->physical->link.lcp.fsm.state == ST_STOPPED) 767 fsm_Close(&dl->physical->link.lcp.fsm); /* back to CLOSED */ |
768 fsm_Down(&dl->physical->link.lcp.fsm); 769 if (stay) 770 fsm_Close(&dl->physical->link.lcp.fsm); 771 else 772 fsm_Open(&dl->physical->link.ccp.fsm); 773 /* fall through */ 774 775 default: 776 datalink_ComeDown(dl, stay); 777 } 778} 779 780void 781datalink_StayDown(struct datalink *dl) 782{ 783 dl->reconnect_tries = 0; 784} 785 786int 787datalink_Show(struct cmdargs const *arg) 788{ 789 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 790 prompt_Printf(arg->prompt, " State: %s\n", 791 datalink_State(arg->cx)); 792 prompt_Printf(arg->prompt, " CHAP Encryption: %s\n", 793 arg->cx->chap.using_MSChap ? "MSChap" : "MD5" ); 794 prompt_Printf(arg->prompt, " Peer name: "); 795 if (*arg->cx->peer.authname) 796 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 797 else if (arg->cx->state == DATALINK_OPEN) 798 prompt_Printf(arg->prompt, "None requested\n"); 799 else 800 prompt_Printf(arg->prompt, "N/A\n"); 801 prompt_Printf(arg->prompt, " Discriminator: %s\n", 802 mp_Enddisc(arg->cx->peer.enddisc.class, 803 arg->cx->peer.enddisc.address, 804 arg->cx->peer.enddisc.len)); 805 806 prompt_Printf(arg->prompt, "\nDefaults:\n"); 807 prompt_Printf(arg->prompt, " Phone List: %s\n", 808 arg->cx->cfg.phone.list); 809 if (arg->cx->cfg.dial.max) 810 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 811 arg->cx->cfg.dial.max); 812 else 813 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 814 if (arg->cx->cfg.dial.next_timeout > 0) 815 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 816 else 817 prompt_Printf(arg->prompt, "random/"); 818 if (arg->cx->cfg.dial.timeout > 0) 819 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 820 else 821 prompt_Printf(arg->prompt, "random\n"); 822 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 823 arg->cx->cfg.reconnect.max); 824 if (arg->cx->cfg.reconnect.timeout > 0) 825 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 826 else 827 prompt_Printf(arg->prompt, "random\n"); 828 prompt_Printf(arg->prompt, " Dial Script: %s\n", 829 arg->cx->cfg.script.dial); 830 prompt_Printf(arg->prompt, " Login Script: %s\n", 831 arg->cx->cfg.script.login); 832 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 833 arg->cx->cfg.script.hangup); 834 return 0; 835} 836 837int 838datalink_SetReconnect(struct cmdargs const *arg) 839{ 840 if (arg->argc == arg->argn+2) { 841 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 842 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 843 return 0; 844 } 845 return -1; 846} 847 848int 849datalink_SetRedial(struct cmdargs const *arg) 850{ 851 int timeout; 852 int tries; 853 char *dot; 854 855 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 856 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 857 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 858 arg->cx->cfg.dial.timeout = -1; 859 randinit(); 860 } else { 861 timeout = atoi(arg->argv[arg->argn]); 862 863 if (timeout >= 0) 864 arg->cx->cfg.dial.timeout = timeout; 865 else { 866 log_Printf(LogWARN, "Invalid redial timeout\n"); 867 return -1; 868 } 869 } 870 871 dot = strchr(arg->argv[arg->argn], '.'); 872 if (dot) { 873 if (strcasecmp(++dot, "random") == 0) { 874 arg->cx->cfg.dial.next_timeout = -1; 875 randinit(); 876 } else { 877 timeout = atoi(dot); 878 if (timeout >= 0) 879 arg->cx->cfg.dial.next_timeout = timeout; 880 else { 881 log_Printf(LogWARN, "Invalid next redial timeout\n"); 882 return -1; 883 } 884 } 885 } else 886 /* Default next timeout */ 887 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 888 889 if (arg->argc == arg->argn+2) { 890 tries = atoi(arg->argv[arg->argn+1]); 891 892 if (tries >= 0) { 893 arg->cx->cfg.dial.max = tries; 894 } else { 895 log_Printf(LogWARN, "Invalid retry value\n"); 896 return 1; 897 } 898 } 899 return 0; 900 } 901 return -1; 902} 903 904static const char *states[] = { 905 "closed", 906 "opening", 907 "hangup", 908 "dial", 909 "login", 910 "ready", 911 "lcp", 912 "auth", 913 "open" 914}; 915 916const char * 917datalink_State(struct datalink *dl) 918{ 919 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 920 return "unknown"; 921 return states[dl->state]; 922} 923 924static void 925datalink_NewState(struct datalink *dl, int state) 926{ 927 if (state != dl->state) { 928 if (state >= 0 && state < sizeof states / sizeof states[0]) { 929 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 930 states[state]); 931 dl->state = state; 932 } else 933 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 934 } 935} 936 937struct datalink * 938iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 939 int fd) 940{ 941 struct datalink *dl, *cdl; 942 u_int retry; 943 char *oname; 944 945 dl = (struct datalink *)iov[(*niov)++].iov_base; 946 dl->name = iov[*niov].iov_base; 947 948 if (dl->name[DATALINK_MAXNAME-1]) { 949 dl->name[DATALINK_MAXNAME-1] = '\0'; 950 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 951 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 952 } 953 954 /* Make sure the name is unique ! */ 955 oname = NULL; 956 do { 957 for (cdl = bundle->links; cdl; cdl = cdl->next) 958 if (!strcasecmp(dl->name, cdl->name)) { 959 if (oname) 960 free(datalink_NextName(dl)); 961 else 962 oname = datalink_NextName(dl); 963 break; /* Keep renaming 'till we have no conflicts */ 964 } 965 } while (cdl); 966 967 if (oname) { 968 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 969 free(oname); 970 } else { 971 dl->name = strdup(dl->name);
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968 dl->physical->link.name = dl->name;
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972 free(iov[*niov].iov_base); 973 } 974 (*niov)++; 975 976 dl->desc.type = DATALINK_DESCRIPTOR; 977 dl->desc.UpdateSet = datalink_UpdateSet; 978 dl->desc.IsSet = datalink_IsSet; 979 dl->desc.Read = datalink_Read; 980 dl->desc.Write = datalink_Write; 981 982 mp_linkInit(&dl->mp); 983 *dl->phone.list = '\0'; 984 dl->phone.next = NULL; 985 dl->phone.alt = NULL; 986 dl->phone.chosen = "N/A"; 987 988 dl->bundle = bundle; 989 dl->next = NULL; 990 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 991 dl->dial_tries = 0; 992 dl->reconnect_tries = 0; 993 dl->parent = &bundle->fsm; 994 dl->fsmp.LayerStart = datalink_LayerStart; 995 dl->fsmp.LayerUp = datalink_LayerUp; 996 dl->fsmp.LayerDown = datalink_LayerDown; 997 dl->fsmp.LayerFinish = datalink_LayerFinish; 998 dl->fsmp.object = dl; 999 1000 retry = dl->pap.cfg.fsmretry; 1001 auth_Init(&dl->pap); 1002 dl->pap.cfg.fsmretry = retry; 1003 1004 retry = dl->chap.auth.cfg.fsmretry; 1005 auth_Init(&dl->chap.auth); 1006 dl->chap.auth.cfg.fsmretry = retry; 1007 1008 dl->physical = iov2modem(dl, iov, niov, maxiov, fd); 1009 1010 if (!dl->physical) { 1011 free(dl->name); 1012 free(dl); 1013 dl = NULL; 1014 } else { 1015 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 1016 1017 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1018 dl->name, datalink_State(dl)); 1019 } 1020 1021 return dl; 1022} 1023 1024int 1025datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov) 1026{ 1027 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1028 int link_fd; 1029 1030 if (dl) { 1031 timer_Stop(&dl->dial_timer); 1032 timer_Stop(&dl->pap.authtimer); 1033 timer_Stop(&dl->chap.auth.authtimer); 1034 } 1035 1036 if (*niov >= maxiov - 1) { 1037 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1038 if (dl) { 1039 free(dl->name); 1040 free(dl); 1041 } 1042 return -1; 1043 } 1044 1045 iov[*niov].iov_base = dl ? dl : malloc(sizeof *dl); 1046 iov[(*niov)++].iov_len = sizeof *dl; 1047 iov[*niov].iov_base = 1048 dl ? realloc(dl->name, DATALINK_MAXNAME) : malloc(DATALINK_MAXNAME); 1049 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1050 1051 link_fd = modem2iov(dl ? dl->physical : NULL, iov, niov, maxiov); 1052 1053 if (link_fd == -1 && dl) { 1054 free(dl->name); 1055 free(dl); 1056 } 1057 1058 return link_fd; 1059} 1060 1061void 1062datalink_Rename(struct datalink *dl, const char *name) 1063{ 1064 free(dl->name); 1065 dl->physical->link.name = dl->name = strdup(name); 1066} 1067 1068char * 1069datalink_NextName(struct datalink *dl) 1070{ 1071 int f, n; 1072 char *name, *oname; 1073 1074 n = strlen(dl->name); 1075 name = (char *)malloc(n+3); 1076 for (f = n - 1; f >= 0; f--) 1077 if (!isdigit(dl->name[f])) 1078 break; 1079 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1080 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1081 oname = dl->name;
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1079 dl->physical->link.name = dl->name = name;
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1082 dl->name = name; 1083 /* our physical link name isn't updated (it probably isn't created yet) */ |
1084 return oname; 1085} 1086 1087int 1088datalink_SetMode(struct datalink *dl, int mode) 1089{ 1090 if (!physical_SetMode(dl->physical, mode)) 1091 return 0; 1092 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1093 dl->script.run = 0; 1094 if (dl->physical->type == PHYS_DIRECT) 1095 dl->reconnect_tries = 0; 1096 if (mode & (PHYS_PERM|PHYS_1OFF) && dl->state <= DATALINK_READY) 1097 datalink_Up(dl, 1, 1); 1098 return 1; 1099}
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