datalink.c revision 54055
1/*- 2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/usr.sbin/ppp/datalink.c 54055 1999-12-03 06:33:10Z brian $ 27 */ 28 29#include <sys/param.h> 30#include <netinet/in.h> 31#include <netinet/in_systm.h> 32#include <netinet/ip.h> 33#include <sys/un.h> 34 35#include <ctype.h> 36#include <stdio.h> 37#include <stdlib.h> 38#include <string.h> 39#include <sys/uio.h> 40#include <termios.h> 41 42#include "layer.h" 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#ifndef NORADIUS 63#include "radius.h" 64#endif 65#include "bundle.h" 66#include "chat.h" 67#include "auth.h" 68#include "prompt.h" 69#include "proto.h" 70#include "pap.h" 71#include "chap.h" 72#include "command.h" 73#include "cbcp.h" 74#include "datalink.h" 75 76static void datalink_LoginDone(struct datalink *); 77static void datalink_NewState(struct datalink *, int); 78 79static void 80datalink_OpenTimeout(void *v) 81{ 82 struct datalink *dl = (struct datalink *)v; 83 84 timer_Stop(&dl->dial.timer); 85 if (dl->state == DATALINK_OPENING) 86 log_Printf(LogPHASE, "%s: Redial timer expired.\n", dl->name); 87} 88 89static int 90datalink_StartDialTimer(struct datalink *dl, int Timeout) 91{ 92 int result = Timeout; 93 94 timer_Stop(&dl->dial.timer); 95 if (Timeout) { 96 if (Timeout > 0) 97 dl->dial.timer.load = Timeout * SECTICKS; 98 else { 99 result = (random() % DIAL_TIMEOUT) + 1; 100 dl->dial.timer.load = result * SECTICKS; 101 } 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", 108 dl->name, Timeout); 109 } 110 return result; 111} 112 113static void 114datalink_HangupDone(struct datalink *dl) 115{ 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); 120 return; 121 } 122 123 chat_Finish(&dl->chat); 124 physical_Close(dl->physical); 125 dl->phone.chosen = "N/A"; 126 127 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; 136 dl->dial.incs = 0; 137 dl->script.run = 1; 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); 156 dl->dial.tries = -1; 157 dl->dial.incs = 0; 158 dl->reconnect_tries = 0; 159 bundle_LinkClosed(dl->bundle, dl); 160 if (!dl->bundle->CleaningUp) 161 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 162 } else { 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; 170 dl->dial.incs = 0; 171 dl->reconnect_tries--; 172 } else { 173 if (dl->phone.next == NULL) 174 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 175 else 176 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 177 } 178 } 179} 180 181const char * 182datalink_ChoosePhoneNumber(struct datalink *dl) 183{ 184 char *phone; 185 186 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') 191 return ""; 192 dl->phone.next = dl->phone.list; 193 } 194 dl->phone.alt = strsep(&dl->phone.next, ":"); 195 } 196 phone = strsep(&dl->phone.alt, "|"); 197 dl->phone.chosen = *phone ? phone : "[NONE]"; 198 if (*phone) 199 log_Printf(LogPHASE, "Phone: %s\n", phone); 200 return phone; 201} 202 203static void 204datalink_LoginDone(struct datalink *dl) 205{ 206 chat_Finish(&dl->chat); 207 208 if (!dl->script.packetmode) { 209 dl->dial.tries = -1; 210 dl->dial.incs = 0; 211 datalink_NewState(dl, DATALINK_READY); 212 } else if (!physical_Raw(dl->physical)) { 213 dl->dial.tries = 0; 214 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 215 if (dl->script.run) { 216 datalink_NewState(dl, DATALINK_LOGOUT); 217 chat_Setup(&dl->chat, dl->cfg.script.logout, NULL); 218 } else { 219 physical_StopDeviceTimer(dl->physical); 220 if (dl->physical->type == PHYS_DEDICATED) 221 /* force a redial timeout */ 222 physical_Close(dl->physical); 223 datalink_HangupDone(dl); 224 } 225 } else { 226 dl->dial.tries = -1; 227 dl->dial.incs = 0; 228 229 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 230 async_Init(&dl->physical->async); 231 232 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 233 0 : dl->physical->link.lcp.cfg.openmode); 234 ccp_Setup(&dl->physical->link.ccp); 235 236 datalink_NewState(dl, DATALINK_LCP); 237 fsm_Up(&dl->physical->link.lcp.fsm); 238 fsm_Open(&dl->physical->link.lcp.fsm); 239 } 240} 241 242static int 243datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, 244 int *n) 245{ 246 struct datalink *dl = descriptor2datalink(d); 247 int result; 248 249 result = 0; 250 switch (dl->state) { 251 case DATALINK_CLOSED: 252 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND| 253 PHYS_FOREGROUND|PHYS_DDIAL)) && 254 !dl->bundle->CleaningUp) 255 /* 256 * Our first time in - DEDICATED & DDIAL never come down, and 257 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter 258 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up() 259 * and fall through. 260 */ 261 datalink_Up(dl, 1, 1); 262 else 263 break; 264 /* fall through */ 265 266 case DATALINK_OPENING: 267 if (dl->dial.timer.state != TIMER_RUNNING) { 268 if (--dl->dial.tries < 0) 269 dl->dial.tries = 0; 270 if (physical_Open(dl->physical, dl->bundle) >= 0) { 271 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n" 272 "Type `~?' for help\r\n", dl->name, 273 dl->physical->name.full); 274 if (dl->script.run) { 275 datalink_NewState(dl, DATALINK_DIAL); 276 chat_Setup(&dl->chat, dl->cfg.script.dial, *dl->cfg.script.dial ? 277 datalink_ChoosePhoneNumber(dl) : ""); 278 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 279 dl->cfg.dial.max) 280 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 281 dl->name, dl->cfg.dial.max - dl->dial.tries, 282 dl->cfg.dial.max); 283 } else 284 datalink_NewState(dl, DATALINK_CARRIER); 285 return datalink_UpdateSet(d, r, w, e, n); 286 } else { 287 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 288 dl->cfg.dial.max) 289 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n", 290 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max); 291 else 292 log_Printf(LogCHAT, "Failed to open device\n"); 293 294 if (dl->bundle->CleaningUp || 295 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 296 dl->cfg.dial.max && dl->dial.tries == 0)) { 297 datalink_NewState(dl, DATALINK_CLOSED); 298 dl->reconnect_tries = 0; 299 dl->dial.tries = -1; 300 log_WritePrompts(dl, "Failed to open %s\n", 301 dl->physical->name.full); 302 bundle_LinkClosed(dl->bundle, dl); 303 } 304 if (!dl->bundle->CleaningUp) { 305 int timeout; 306 307 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 308 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n", 309 dl->physical->name.full, timeout); 310 } 311 } 312 } 313 break; 314 315 case DATALINK_CARRIER: 316 /* Wait for carrier on the device */ 317 switch (physical_AwaitCarrier(dl->physical)) { 318 case CARRIER_PENDING: 319 log_Printf(LogDEBUG, "Waiting for carrier\n"); 320 return 0; /* A device timer is running to wake us up again */ 321 322 case CARRIER_OK: 323 if (dl->script.run) { 324 datalink_NewState(dl, DATALINK_LOGIN); 325 chat_Setup(&dl->chat, dl->cfg.script.login, NULL); 326 } else 327 datalink_LoginDone(dl); 328 return datalink_UpdateSet(d, r, w, e, n); 329 330 case CARRIER_LOST: 331 physical_Offline(dl->physical); /* Is this required ? */ 332 if (dl->script.run) { 333 datalink_NewState(dl, DATALINK_HANGUP); 334 chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL); 335 return datalink_UpdateSet(d, r, w, e, n); 336 } else { 337 datalink_HangupDone(dl); 338 return 0; /* Maybe bundle_CleanDatalinks() has something to do */ 339 } 340 } 341 342 case DATALINK_HANGUP: 343 case DATALINK_DIAL: 344 case DATALINK_LOGOUT: 345 case DATALINK_LOGIN: 346 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 347 switch (dl->chat.state) { 348 case CHAT_DONE: 349 /* script succeeded */ 350 switch(dl->state) { 351 case DATALINK_HANGUP: 352 datalink_HangupDone(dl); 353 break; 354 case DATALINK_DIAL: 355 datalink_NewState(dl, DATALINK_CARRIER); 356 return datalink_UpdateSet(d, r, w, e, n); 357 case DATALINK_LOGOUT: 358 datalink_NewState(dl, DATALINK_HANGUP); 359 physical_Offline(dl->physical); 360 chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL); 361 return datalink_UpdateSet(d, r, w, e, n); 362 case DATALINK_LOGIN: 363 dl->phone.alt = NULL; 364 datalink_LoginDone(dl); 365 return datalink_UpdateSet(d, r, w, e, n); 366 } 367 break; 368 case CHAT_FAILED: 369 /* Going down - script failed */ 370 log_Printf(LogWARN, "Chat script failed\n"); 371 switch(dl->state) { 372 case DATALINK_HANGUP: 373 datalink_HangupDone(dl); 374 break; 375 case DATALINK_DIAL: 376 case DATALINK_LOGOUT: 377 case DATALINK_LOGIN: 378 datalink_NewState(dl, DATALINK_HANGUP); 379 physical_Offline(dl->physical); 380 chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL); 381 return datalink_UpdateSet(d, r, w, e, n); 382 } 383 break; 384 } 385 break; 386 387 case DATALINK_READY: 388 case DATALINK_LCP: 389 case DATALINK_AUTH: 390 case DATALINK_CBCP: 391 case DATALINK_OPEN: 392 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) + 393 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 394 break; 395 } 396 return result; 397} 398 399int 400datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 401{ 402 return physical_RemoveFromSet(dl->physical, r, w, e); 403} 404 405static int 406datalink_IsSet(struct descriptor *d, const fd_set *fdset) 407{ 408 struct datalink *dl = descriptor2datalink(d); 409 410 switch (dl->state) { 411 case DATALINK_CLOSED: 412 case DATALINK_OPENING: 413 break; 414 415 case DATALINK_HANGUP: 416 case DATALINK_DIAL: 417 case DATALINK_LOGOUT: 418 case DATALINK_LOGIN: 419 return descriptor_IsSet(&dl->chat.desc, fdset); 420 421 case DATALINK_READY: 422 case DATALINK_LCP: 423 case DATALINK_AUTH: 424 case DATALINK_CBCP: 425 case DATALINK_OPEN: 426 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 : 427 descriptor_IsSet(&dl->physical->desc, fdset); 428 } 429 return 0; 430} 431 432static void 433datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 434{ 435 struct datalink *dl = descriptor2datalink(d); 436 437 switch (dl->state) { 438 case DATALINK_CLOSED: 439 case DATALINK_OPENING: 440 break; 441 442 case DATALINK_HANGUP: 443 case DATALINK_DIAL: 444 case DATALINK_LOGOUT: 445 case DATALINK_LOGIN: 446 descriptor_Read(&dl->chat.desc, bundle, fdset); 447 break; 448 449 case DATALINK_READY: 450 case DATALINK_LCP: 451 case DATALINK_AUTH: 452 case DATALINK_CBCP: 453 case DATALINK_OPEN: 454 if (descriptor_IsSet(&dl->chap.desc, fdset)) 455 descriptor_Read(&dl->chap.desc, bundle, fdset); 456 if (descriptor_IsSet(&dl->physical->desc, fdset)) 457 descriptor_Read(&dl->physical->desc, bundle, fdset); 458 break; 459 } 460} 461 462static int 463datalink_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 464{ 465 struct datalink *dl = descriptor2datalink(d); 466 int result = 0; 467 468 switch (dl->state) { 469 case DATALINK_CLOSED: 470 case DATALINK_OPENING: 471 break; 472 473 case DATALINK_HANGUP: 474 case DATALINK_DIAL: 475 case DATALINK_LOGOUT: 476 case DATALINK_LOGIN: 477 result = descriptor_Write(&dl->chat.desc, bundle, fdset); 478 break; 479 480 case DATALINK_READY: 481 case DATALINK_LCP: 482 case DATALINK_AUTH: 483 case DATALINK_CBCP: 484 case DATALINK_OPEN: 485 if (descriptor_IsSet(&dl->chap.desc, fdset)) 486 result += descriptor_Write(&dl->chap.desc, bundle, fdset); 487 if (descriptor_IsSet(&dl->physical->desc, fdset)) 488 result += descriptor_Write(&dl->physical->desc, bundle, fdset); 489 break; 490 } 491 492 return result; 493} 494 495static void 496datalink_ComeDown(struct datalink *dl, int how) 497{ 498 if (how != CLOSE_NORMAL) { 499 dl->dial.tries = -1; 500 dl->reconnect_tries = 0; 501 if (dl->state >= DATALINK_READY && how == CLOSE_LCP) 502 dl->stayonline = 1; 503 } 504 505 if (dl->state >= DATALINK_READY && dl->stayonline) { 506 dl->stayonline = 0; 507 physical_StopDeviceTimer(dl->physical); 508 datalink_NewState(dl, DATALINK_READY); 509 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 510 physical_Offline(dl->physical); 511 if (dl->script.run && dl->state != DATALINK_OPENING) { 512 if (dl->state == DATALINK_LOGOUT) { 513 datalink_NewState(dl, DATALINK_HANGUP); 514 chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL); 515 } else { 516 datalink_NewState(dl, DATALINK_LOGOUT); 517 chat_Setup(&dl->chat, dl->cfg.script.logout, NULL); 518 } 519 } else 520 datalink_HangupDone(dl); 521 } 522} 523 524static void 525datalink_LayerStart(void *v, struct fsm *fp) 526{ 527 /* The given FSM is about to start up ! */ 528 struct datalink *dl = (struct datalink *)v; 529 530 if (fp->proto == PROTO_LCP) 531 (*dl->parent->LayerStart)(dl->parent->object, fp); 532} 533 534static void 535datalink_LayerUp(void *v, struct fsm *fp) 536{ 537 /* The given fsm is now up */ 538 struct datalink *dl = (struct datalink *)v; 539 struct lcp *lcp = &dl->physical->link.lcp; 540 541 if (fp->proto == PROTO_LCP) { 542 datalink_GotAuthname(dl, ""); 543 lcp->auth_ineed = lcp->want_auth; 544 lcp->auth_iwait = lcp->his_auth; 545 if (lcp->his_auth || lcp->want_auth) { 546 if (bundle_Phase(dl->bundle) != PHASE_NETWORK) 547 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 548 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 549 Auth2Nam(lcp->his_auth, lcp->his_authtype), 550 Auth2Nam(lcp->want_auth, lcp->want_authtype)); 551 if (lcp->his_auth == PROTO_PAP) 552 auth_StartReq(&dl->pap); 553 if (lcp->want_auth == PROTO_CHAP) 554 auth_StartReq(&dl->chap.auth); 555 } else 556 datalink_AuthOk(dl); 557 } 558} 559 560static void 561datalink_AuthReInit(struct datalink *dl) 562{ 563 auth_StopTimer(&dl->pap); 564 auth_StopTimer(&dl->chap.auth); 565 chap_ReInit(&dl->chap); 566} 567 568void 569datalink_GotAuthname(struct datalink *dl, const char *name) 570{ 571 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1); 572 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0'; 573} 574 575void 576datalink_NCPUp(struct datalink *dl) 577{ 578 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp); 579 580 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 581 /* we've authenticated in multilink mode ! */ 582 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 583 case MP_LINKSENT: 584 /* We've handed the link off to another ppp (well, we will soon) ! */ 585 return; 586 case MP_UP: 587 /* First link in the bundle */ 588 auth_Select(dl->bundle, dl->peer.authname); 589 bundle_CalculateBandwidth(dl->bundle); 590 /* fall through */ 591 case MP_ADDED: 592 /* We're in multilink mode ! */ 593 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 594 bundle_CalculateBandwidth(dl->bundle); 595 break; 596 case MP_FAILED: 597 datalink_AuthNotOk(dl); 598 return; 599 } 600 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 601 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 602 datalink_NewState(dl, DATALINK_OPEN); 603 bundle_CalculateBandwidth(dl->bundle); 604 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 605 return; 606 } else { 607 dl->bundle->ncp.mp.peer = dl->peer; 608 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link); 609 auth_Select(dl->bundle, dl->peer.authname); 610 } 611 612 if (ccpok) { 613 fsm_Up(&dl->physical->link.ccp.fsm); 614 fsm_Open(&dl->physical->link.ccp.fsm); 615 } 616 datalink_NewState(dl, DATALINK_OPEN); 617 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 618 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 619} 620 621void 622datalink_CBCPComplete(struct datalink *dl) 623{ 624 datalink_NewState(dl, DATALINK_LCP); 625 datalink_AuthReInit(dl); 626 fsm_Close(&dl->physical->link.lcp.fsm); 627} 628 629void 630datalink_CBCPFailed(struct datalink *dl) 631{ 632 cbcp_Down(&dl->cbcp); 633 datalink_CBCPComplete(dl); 634} 635 636void 637datalink_AuthOk(struct datalink *dl) 638{ 639 if ((dl->physical->link.lcp.his_callback.opmask & 640 CALLBACK_BIT(CALLBACK_CBCP) || 641 dl->physical->link.lcp.want_callback.opmask & 642 CALLBACK_BIT(CALLBACK_CBCP)) && 643 !(dl->physical->link.lcp.want_callback.opmask & 644 CALLBACK_BIT(CALLBACK_AUTH))) { 645 /* We must have agreed CBCP if AUTH isn't there any more */ 646 datalink_NewState(dl, DATALINK_CBCP); 647 cbcp_Up(&dl->cbcp); 648 } else if (dl->physical->link.lcp.want_callback.opmask) { 649 /* It's not CBCP */ 650 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name); 651 datalink_NewState(dl, DATALINK_LCP); 652 datalink_AuthReInit(dl); 653 fsm_Close(&dl->physical->link.lcp.fsm); 654 } else 655 switch (dl->physical->link.lcp.his_callback.opmask) { 656 case 0: 657 datalink_NCPUp(dl); 658 break; 659 660 case CALLBACK_BIT(CALLBACK_AUTH): 661 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone, 662 sizeof dl->cbcp.fsm.phone); 663 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) { 664 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name, 665 dl->peer.authname); 666 *dl->cbcp.fsm.phone = '\0'; 667 } else { 668 char *ptr = strchr(dl->cbcp.fsm.phone, ','); 669 if (ptr) 670 *ptr = '\0'; /* Call back on the first number */ 671 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 672 dl->cbcp.fsm.phone); 673 dl->cbcp.required = 1; 674 } 675 dl->cbcp.fsm.delay = 0; 676 datalink_NewState(dl, DATALINK_LCP); 677 datalink_AuthReInit(dl); 678 fsm_Close(&dl->physical->link.lcp.fsm); 679 break; 680 681 case CALLBACK_BIT(CALLBACK_E164): 682 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg, 683 sizeof dl->cbcp.fsm.phone - 1); 684 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0'; 685 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 686 dl->cbcp.fsm.phone); 687 dl->cbcp.required = 1; 688 dl->cbcp.fsm.delay = 0; 689 datalink_NewState(dl, DATALINK_LCP); 690 datalink_AuthReInit(dl); 691 fsm_Close(&dl->physical->link.lcp.fsm); 692 break; 693 694 default: 695 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n", 696 dl->name); 697 datalink_NewState(dl, DATALINK_LCP); 698 datalink_AuthReInit(dl); 699 fsm_Close(&dl->physical->link.lcp.fsm); 700 break; 701 } 702} 703 704void 705datalink_AuthNotOk(struct datalink *dl) 706{ 707 datalink_NewState(dl, DATALINK_LCP); 708 datalink_AuthReInit(dl); 709 fsm_Close(&dl->physical->link.lcp.fsm); 710} 711 712static void 713datalink_LayerDown(void *v, struct fsm *fp) 714{ 715 /* The given FSM has been told to come down */ 716 struct datalink *dl = (struct datalink *)v; 717 718 if (fp->proto == PROTO_LCP) { 719 switch (dl->state) { 720 case DATALINK_OPEN: 721 peerid_Init(&dl->peer); 722 fsm2initial(&dl->physical->link.ccp.fsm); 723 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */ 724 (*dl->parent->LayerDown)(dl->parent->object, fp); 725 /* fall through (just in case) */ 726 727 case DATALINK_CBCP: 728 if (!dl->cbcp.required) 729 cbcp_Down(&dl->cbcp); 730 /* fall through (just in case) */ 731 732 case DATALINK_AUTH: 733 timer_Stop(&dl->pap.authtimer); 734 timer_Stop(&dl->chap.auth.authtimer); 735 } 736 datalink_NewState(dl, DATALINK_LCP); 737 datalink_AuthReInit(dl); 738 } 739} 740 741static void 742datalink_LayerFinish(void *v, struct fsm *fp) 743{ 744 /* The given fsm is now down */ 745 struct datalink *dl = (struct datalink *)v; 746 747 if (fp->proto == PROTO_LCP) { 748 fsm2initial(fp); 749 (*dl->parent->LayerFinish)(dl->parent->object, fp); 750 datalink_ComeDown(dl, CLOSE_NORMAL); 751 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 752 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 753} 754 755struct datalink * 756datalink_Create(const char *name, struct bundle *bundle, int type) 757{ 758 struct datalink *dl; 759 760 dl = (struct datalink *)malloc(sizeof(struct datalink)); 761 if (dl == NULL) 762 return dl; 763 764 dl->desc.type = DATALINK_DESCRIPTOR; 765 dl->desc.UpdateSet = datalink_UpdateSet; 766 dl->desc.IsSet = datalink_IsSet; 767 dl->desc.Read = datalink_Read; 768 dl->desc.Write = datalink_Write; 769 770 dl->state = DATALINK_CLOSED; 771 772 *dl->cfg.script.dial = '\0'; 773 *dl->cfg.script.login = '\0'; 774 *dl->cfg.script.logout = '\0'; 775 *dl->cfg.script.hangup = '\0'; 776 *dl->cfg.phone.list = '\0'; 777 *dl->phone.list = '\0'; 778 dl->phone.next = NULL; 779 dl->phone.alt = NULL; 780 dl->phone.chosen = "N/A"; 781 dl->stayonline = 0; 782 dl->script.run = 1; 783 dl->script.packetmode = 1; 784 mp_linkInit(&dl->mp); 785 786 dl->bundle = bundle; 787 dl->next = NULL; 788 789 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 790 791 dl->dial.tries = 0; 792 dl->cfg.dial.max = 1; 793 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 794 dl->cfg.dial.timeout = DIAL_TIMEOUT; 795 dl->cfg.dial.inc = 0; 796 dl->cfg.dial.maxinc = 10; 797 798 dl->reconnect_tries = 0; 799 dl->cfg.reconnect.max = 0; 800 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 801 802 dl->cfg.callback.opmask = 0; 803 dl->cfg.cbcp.delay = 0; 804 *dl->cfg.cbcp.phone = '\0'; 805 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY; 806 807 dl->name = strdup(name); 808 peerid_Init(&dl->peer); 809 dl->parent = &bundle->fsm; 810 dl->fsmp.LayerStart = datalink_LayerStart; 811 dl->fsmp.LayerUp = datalink_LayerUp; 812 dl->fsmp.LayerDown = datalink_LayerDown; 813 dl->fsmp.LayerFinish = datalink_LayerFinish; 814 dl->fsmp.object = dl; 815 816 if ((dl->physical = physical_Create(dl, type)) == NULL) { 817 free(dl->name); 818 free(dl); 819 return NULL; 820 } 821 822 pap_Init(&dl->pap, dl->physical); 823 chap_Init(&dl->chap, dl->physical); 824 cbcp_Init(&dl->cbcp, dl->physical); 825 826 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 827 chat_Init(&dl->chat, dl->physical); 828 829 log_Printf(LogPHASE, "%s: Created in %s state\n", 830 dl->name, datalink_State(dl)); 831 832 return dl; 833} 834 835struct datalink * 836datalink_Clone(struct datalink *odl, const char *name) 837{ 838 struct datalink *dl; 839 840 dl = (struct datalink *)malloc(sizeof(struct datalink)); 841 if (dl == NULL) 842 return dl; 843 844 dl->desc.type = DATALINK_DESCRIPTOR; 845 dl->desc.UpdateSet = datalink_UpdateSet; 846 dl->desc.IsSet = datalink_IsSet; 847 dl->desc.Read = datalink_Read; 848 dl->desc.Write = datalink_Write; 849 850 dl->state = DATALINK_CLOSED; 851 852 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 853 mp_linkInit(&dl->mp); 854 *dl->phone.list = '\0'; 855 dl->phone.next = NULL; 856 dl->phone.alt = NULL; 857 dl->phone.chosen = "N/A"; 858 dl->bundle = odl->bundle; 859 dl->next = NULL; 860 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 861 dl->dial.tries = 0; 862 dl->reconnect_tries = 0; 863 dl->name = strdup(name); 864 peerid_Init(&dl->peer); 865 dl->parent = odl->parent; 866 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 867 dl->fsmp.object = dl; 868 869 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) { 870 free(dl->name); 871 free(dl); 872 return NULL; 873 } 874 pap_Init(&dl->pap, dl->physical); 875 dl->pap.cfg = odl->pap.cfg; 876 877 chap_Init(&dl->chap, dl->physical); 878 dl->chap.auth.cfg = odl->chap.auth.cfg; 879 880 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 881 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 882 sizeof dl->physical->link.lcp.cfg); 883 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 884 sizeof dl->physical->link.ccp.cfg); 885 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 886 sizeof dl->physical->async.cfg); 887 888 cbcp_Init(&dl->cbcp, dl->physical); 889 890 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 891 chat_Init(&dl->chat, dl->physical); 892 893 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 894 dl->name, datalink_State(dl)); 895 896 return dl; 897} 898 899struct datalink * 900datalink_Destroy(struct datalink *dl) 901{ 902 struct datalink *result; 903 904 if (dl->state != DATALINK_CLOSED) { 905 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 906 datalink_State(dl)); 907 switch (dl->state) { 908 case DATALINK_HANGUP: 909 case DATALINK_DIAL: 910 case DATALINK_LOGIN: 911 chat_Finish(&dl->chat); /* Gotta blat the timers ! */ 912 break; 913 } 914 } 915 916 chat_Destroy(&dl->chat); 917 timer_Stop(&dl->dial.timer); 918 result = dl->next; 919 physical_Destroy(dl->physical); 920 free(dl->name); 921 free(dl); 922 923 return result; 924} 925 926void 927datalink_Up(struct datalink *dl, int runscripts, int packetmode) 928{ 929 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 930 /* Ignore scripts */ 931 runscripts = 0; 932 933 switch (dl->state) { 934 case DATALINK_CLOSED: 935 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 936 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 937 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 938 datalink_NewState(dl, DATALINK_OPENING); 939 dl->reconnect_tries = 940 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 941 dl->dial.tries = dl->cfg.dial.max; 942 dl->script.run = runscripts; 943 dl->script.packetmode = packetmode; 944 break; 945 946 case DATALINK_OPENING: 947 if (!dl->script.run && runscripts) 948 dl->script.run = 1; 949 /* fall through */ 950 951 case DATALINK_DIAL: 952 case DATALINK_LOGIN: 953 case DATALINK_READY: 954 if (!dl->script.packetmode && packetmode) { 955 dl->script.packetmode = 1; 956 if (dl->state == DATALINK_READY) 957 datalink_LoginDone(dl); 958 } 959 break; 960 } 961} 962 963void 964datalink_Close(struct datalink *dl, int how) 965{ 966 /* Please close */ 967 switch (dl->state) { 968 case DATALINK_OPEN: 969 peerid_Init(&dl->peer); 970 fsm2initial(&dl->physical->link.ccp.fsm); 971 /* fall through */ 972 973 case DATALINK_CBCP: 974 case DATALINK_AUTH: 975 case DATALINK_LCP: 976 datalink_AuthReInit(dl); 977 fsm_Close(&dl->physical->link.lcp.fsm); 978 if (how != CLOSE_NORMAL) { 979 dl->dial.tries = -1; 980 dl->reconnect_tries = 0; 981 if (how == CLOSE_LCP) 982 dl->stayonline = 1; 983 } 984 break; 985 986 default: 987 datalink_ComeDown(dl, how); 988 } 989} 990 991void 992datalink_Down(struct datalink *dl, int how) 993{ 994 /* Carrier is lost */ 995 switch (dl->state) { 996 case DATALINK_OPEN: 997 peerid_Init(&dl->peer); 998 fsm2initial(&dl->physical->link.ccp.fsm); 999 /* fall through */ 1000 1001 case DATALINK_CBCP: 1002 case DATALINK_AUTH: 1003 case DATALINK_LCP: 1004 fsm2initial(&dl->physical->link.lcp.fsm); 1005 /* fall through */ 1006 1007 default: 1008 datalink_ComeDown(dl, how); 1009 } 1010} 1011 1012void 1013datalink_StayDown(struct datalink *dl) 1014{ 1015 dl->reconnect_tries = 0; 1016} 1017 1018void 1019datalink_DontHangup(struct datalink *dl) 1020{ 1021 if (dl->state >= DATALINK_LCP) 1022 dl->stayonline = 1; 1023} 1024 1025int 1026datalink_Show(struct cmdargs const *arg) 1027{ 1028 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 1029 prompt_Printf(arg->prompt, " State: %s\n", 1030 datalink_State(arg->cx)); 1031 prompt_Printf(arg->prompt, " Peer name: "); 1032 if (*arg->cx->peer.authname) 1033 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 1034 else if (arg->cx->state == DATALINK_OPEN) 1035 prompt_Printf(arg->prompt, "None requested\n"); 1036 else 1037 prompt_Printf(arg->prompt, "N/A\n"); 1038 prompt_Printf(arg->prompt, " Discriminator: %s\n", 1039 mp_Enddisc(arg->cx->peer.enddisc.class, 1040 arg->cx->peer.enddisc.address, 1041 arg->cx->peer.enddisc.len)); 1042 1043 prompt_Printf(arg->prompt, "\nDefaults:\n"); 1044 prompt_Printf(arg->prompt, " Phone List: %s\n", 1045 arg->cx->cfg.phone.list); 1046 if (arg->cx->cfg.dial.max) 1047 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 1048 arg->cx->cfg.dial.max); 1049 else 1050 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 1051 if (arg->cx->cfg.dial.next_timeout >= 0) 1052 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 1053 else 1054 prompt_Printf(arg->prompt, "random/"); 1055 if (arg->cx->cfg.dial.timeout >= 0) 1056 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 1057 else 1058 prompt_Printf(arg->prompt, "random\n"); 1059 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 1060 arg->cx->cfg.reconnect.max); 1061 if (arg->cx->cfg.reconnect.timeout > 0) 1062 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 1063 else 1064 prompt_Printf(arg->prompt, "random\n"); 1065 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 1066 PHYS_DIRECT ? "accepted: " : "requested:"); 1067 if (!arg->cx->cfg.callback.opmask) 1068 prompt_Printf(arg->prompt, "none\n"); 1069 else { 1070 int comma = 0; 1071 1072 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 1073 prompt_Printf(arg->prompt, "none"); 1074 comma = 1; 1075 } 1076 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 1077 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 1078 comma = 1; 1079 } 1080 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 1081 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 1082 if (arg->cx->physical->type != PHYS_DIRECT) 1083 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 1084 comma = 1; 1085 } 1086 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 1087 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 1088 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 1089 arg->cx->cfg.cbcp.delay); 1090 prompt_Printf(arg->prompt, " phone: "); 1091 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 1092 if (arg->cx->physical->type & PHYS_DIRECT) 1093 prompt_Printf(arg->prompt, "Caller decides\n"); 1094 else 1095 prompt_Printf(arg->prompt, "Dialback server decides\n"); 1096 } else 1097 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 1098 prompt_Printf(arg->prompt, " timeout: %lds\n", 1099 arg->cx->cfg.cbcp.fsmretry); 1100 } else 1101 prompt_Printf(arg->prompt, "\n"); 1102 } 1103 1104 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1105 arg->cx->cfg.script.dial); 1106 prompt_Printf(arg->prompt, " Login Script: %s\n", 1107 arg->cx->cfg.script.login); 1108 prompt_Printf(arg->prompt, " Logout Script: %s\n", 1109 arg->cx->cfg.script.logout); 1110 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1111 arg->cx->cfg.script.hangup); 1112 return 0; 1113} 1114 1115int 1116datalink_SetReconnect(struct cmdargs const *arg) 1117{ 1118 if (arg->argc == arg->argn+2) { 1119 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1120 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1121 return 0; 1122 } 1123 return -1; 1124} 1125 1126int 1127datalink_SetRedial(struct cmdargs const *arg) 1128{ 1129 const char *sep, *osep; 1130 int timeout, inc, maxinc, tries; 1131 1132 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1133 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1134 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1135 arg->cx->cfg.dial.timeout = -1; 1136 randinit(); 1137 } else { 1138 timeout = atoi(arg->argv[arg->argn]); 1139 1140 if (timeout >= 0) 1141 arg->cx->cfg.dial.timeout = timeout; 1142 else { 1143 log_Printf(LogWARN, "Invalid redial timeout\n"); 1144 return -1; 1145 } 1146 } 1147 1148 sep = strchr(arg->argv[arg->argn], '+'); 1149 if (sep) { 1150 inc = atoi(++sep); 1151 osep = sep; 1152 if (inc >= 0) 1153 arg->cx->cfg.dial.inc = inc; 1154 else { 1155 log_Printf(LogWARN, "Invalid timeout increment\n"); 1156 return -1; 1157 } 1158 sep = strchr(sep, '-'); 1159 if (sep) { 1160 maxinc = atoi(++sep); 1161 if (maxinc >= 0) 1162 arg->cx->cfg.dial.maxinc = maxinc; 1163 else { 1164 log_Printf(LogWARN, "Invalid maximum timeout increments\n"); 1165 return -1; 1166 } 1167 } else { 1168 /* Default timeout increment */ 1169 arg->cx->cfg.dial.maxinc = 10; 1170 sep = osep; 1171 } 1172 } else { 1173 /* Default timeout increment & max increment */ 1174 arg->cx->cfg.dial.inc = 0; 1175 arg->cx->cfg.dial.maxinc = 10; 1176 sep = arg->argv[arg->argn]; 1177 } 1178 1179 sep = strchr(sep, '.'); 1180 if (sep) { 1181 if (strcasecmp(++sep, "random") == 0) { 1182 arg->cx->cfg.dial.next_timeout = -1; 1183 randinit(); 1184 } else { 1185 timeout = atoi(sep); 1186 if (timeout >= 0) 1187 arg->cx->cfg.dial.next_timeout = timeout; 1188 else { 1189 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1190 return -1; 1191 } 1192 } 1193 } else 1194 /* Default next timeout */ 1195 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1196 1197 if (arg->argc == arg->argn+2) { 1198 tries = atoi(arg->argv[arg->argn+1]); 1199 1200 if (tries >= 0) { 1201 arg->cx->cfg.dial.max = tries; 1202 } else { 1203 log_Printf(LogWARN, "Invalid retry value\n"); 1204 return 1; 1205 } 1206 } 1207 return 0; 1208 } 1209 1210 return -1; 1211} 1212 1213static const char *states[] = { 1214 "closed", 1215 "opening", 1216 "hangup", 1217 "dial", 1218 "carrier", 1219 "logout", 1220 "login", 1221 "ready", 1222 "lcp", 1223 "auth", 1224 "cbcp", 1225 "open" 1226}; 1227 1228const char * 1229datalink_State(struct datalink *dl) 1230{ 1231 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1232 return "unknown"; 1233 return states[dl->state]; 1234} 1235 1236static void 1237datalink_NewState(struct datalink *dl, int state) 1238{ 1239 if (state != dl->state) { 1240 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1241 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1242 states[state]); 1243 dl->state = state; 1244 } else 1245 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1246 } 1247} 1248 1249struct datalink * 1250iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1251 int fd, int *auxfd, int *nauxfd) 1252{ 1253 struct datalink *dl, *cdl; 1254 struct fsm_retry copy; 1255 char *oname; 1256 1257 dl = (struct datalink *)iov[(*niov)++].iov_base; 1258 dl->name = iov[*niov].iov_base; 1259 1260 if (dl->name[DATALINK_MAXNAME-1]) { 1261 dl->name[DATALINK_MAXNAME-1] = '\0'; 1262 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1263 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1264 } 1265 1266 /* Make sure the name is unique ! */ 1267 oname = NULL; 1268 do { 1269 for (cdl = bundle->links; cdl; cdl = cdl->next) 1270 if (!strcasecmp(dl->name, cdl->name)) { 1271 if (oname) 1272 free(datalink_NextName(dl)); 1273 else 1274 oname = datalink_NextName(dl); 1275 break; /* Keep renaming 'till we have no conflicts */ 1276 } 1277 } while (cdl); 1278 1279 if (oname) { 1280 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1281 free(oname); 1282 } else { 1283 dl->name = strdup(dl->name); 1284 free(iov[*niov].iov_base); 1285 } 1286 (*niov)++; 1287 1288 dl->desc.type = DATALINK_DESCRIPTOR; 1289 dl->desc.UpdateSet = datalink_UpdateSet; 1290 dl->desc.IsSet = datalink_IsSet; 1291 dl->desc.Read = datalink_Read; 1292 dl->desc.Write = datalink_Write; 1293 1294 mp_linkInit(&dl->mp); 1295 *dl->phone.list = '\0'; 1296 dl->phone.next = NULL; 1297 dl->phone.alt = NULL; 1298 dl->phone.chosen = "N/A"; 1299 1300 dl->bundle = bundle; 1301 dl->next = NULL; 1302 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 1303 dl->dial.tries = 0; 1304 dl->reconnect_tries = 0; 1305 dl->parent = &bundle->fsm; 1306 dl->fsmp.LayerStart = datalink_LayerStart; 1307 dl->fsmp.LayerUp = datalink_LayerUp; 1308 dl->fsmp.LayerDown = datalink_LayerDown; 1309 dl->fsmp.LayerFinish = datalink_LayerFinish; 1310 dl->fsmp.object = dl; 1311 1312 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd); 1313 1314 if (!dl->physical) { 1315 free(dl->name); 1316 free(dl); 1317 dl = NULL; 1318 } else { 1319 copy = dl->pap.cfg.fsm; 1320 pap_Init(&dl->pap, dl->physical); 1321 dl->pap.cfg.fsm = copy; 1322 1323 copy = dl->chap.auth.cfg.fsm; 1324 chap_Init(&dl->chap, dl->physical); 1325 dl->chap.auth.cfg.fsm = copy; 1326 1327 cbcp_Init(&dl->cbcp, dl->physical); 1328 1329 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 1330 chat_Init(&dl->chat, dl->physical); 1331 1332 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1333 dl->name, datalink_State(dl)); 1334 } 1335 1336 return dl; 1337} 1338 1339int 1340datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1341 int *auxfd, int *nauxfd) 1342{ 1343 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1344 int link_fd; 1345 1346 if (dl) { 1347 timer_Stop(&dl->dial.timer); 1348 /* The following is purely for the sake of paranoia */ 1349 cbcp_Down(&dl->cbcp); 1350 timer_Stop(&dl->pap.authtimer); 1351 timer_Stop(&dl->chap.auth.authtimer); 1352 } 1353 1354 if (*niov >= maxiov - 1) { 1355 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1356 if (dl) { 1357 free(dl->name); 1358 free(dl); 1359 } 1360 return -1; 1361 } 1362 1363 iov[*niov].iov_base = (void *)dl; 1364 iov[(*niov)++].iov_len = sizeof *dl; 1365 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL; 1366 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1367 1368 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd, 1369 nauxfd); 1370 1371 if (link_fd == -1 && dl) { 1372 free(dl->name); 1373 free(dl); 1374 } 1375 1376 return link_fd; 1377} 1378 1379void 1380datalink_Rename(struct datalink *dl, const char *name) 1381{ 1382 free(dl->name); 1383 dl->physical->link.name = dl->name = strdup(name); 1384} 1385 1386char * 1387datalink_NextName(struct datalink *dl) 1388{ 1389 int f, n; 1390 char *name, *oname; 1391 1392 n = strlen(dl->name); 1393 name = (char *)malloc(n+3); 1394 for (f = n - 1; f >= 0; f--) 1395 if (!isdigit(dl->name[f])) 1396 break; 1397 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1398 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1399 oname = dl->name; 1400 dl->name = name; 1401 /* our physical link name isn't updated (it probably isn't created yet) */ 1402 return oname; 1403} 1404 1405int 1406datalink_SetMode(struct datalink *dl, int mode) 1407{ 1408 if (!physical_SetMode(dl->physical, mode)) 1409 return 0; 1410 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1411 dl->script.run = 0; 1412 if (dl->physical->type == PHYS_DIRECT) 1413 dl->reconnect_tries = 0; 1414 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) && 1415 dl->state <= DATALINK_READY) 1416 datalink_Up(dl, 1, 1); 1417 return 1; 1418} 1419 1420int 1421datalink_GetDialTimeout(struct datalink *dl) 1422{ 1423 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc; 1424 1425 if (dl->dial.incs < dl->cfg.dial.maxinc) 1426 dl->dial.incs++; 1427 1428 return result; 1429} 1430