datalink.c revision 63484
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 63484 2000-07-19 02:10:35Z 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 "descriptor.h" 49#include "lqr.h" 50#include "hdlc.h" 51#include "lcp.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(LogCHAT, "%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 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND))) 162 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 163 } else { 164 datalink_NewState(dl, DATALINK_OPENING); 165 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 166 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 167 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 168 if (dl->dial.tries < 0) { 169 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout); 170 dl->dial.tries = dl->cfg.dial.max; 171 dl->dial.incs = 0; 172 dl->reconnect_tries--; 173 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n", 174 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries, 175 dl->cfg.reconnect.max); 176 bundle_Notify(dl->bundle, EX_RECONNECT); 177 } else { 178 if (dl->phone.next == NULL) 179 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 180 else 181 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 182 bundle_Notify(dl->bundle, EX_REDIAL); 183 } 184 } 185} 186 187const char * 188datalink_ChoosePhoneNumber(struct datalink *dl) 189{ 190 char *phone; 191 192 if (dl->phone.alt == NULL) { 193 if (dl->phone.next == NULL) { 194 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1); 195 dl->phone.list[sizeof dl->phone.list - 1] = '\0'; 196 if (*dl->phone.list == '\0') 197 return ""; 198 dl->phone.next = dl->phone.list; 199 } 200 dl->phone.alt = strsep(&dl->phone.next, ":"); 201 } 202 phone = strsep(&dl->phone.alt, "|"); 203 dl->phone.chosen = *phone ? phone : "[NONE]"; 204 if (*phone) 205 log_Printf(LogCHAT, "Phone: %s\n", phone); 206 return phone; 207} 208 209static void 210datalink_LoginDone(struct datalink *dl) 211{ 212 chat_Finish(&dl->chat); 213 214 if (!dl->script.packetmode) { 215 dl->dial.tries = -1; 216 dl->dial.incs = 0; 217 datalink_NewState(dl, DATALINK_READY); 218 } else if (!physical_Raw(dl->physical)) { 219 dl->dial.tries = 0; 220 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 221 if (dl->script.run) { 222 datalink_NewState(dl, DATALINK_LOGOUT); 223 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 224 log_Printf(LogWARN, "Invalid logout script\n"); 225 } else { 226 physical_StopDeviceTimer(dl->physical); 227 if (dl->physical->type == PHYS_DEDICATED) 228 /* force a redial timeout */ 229 physical_Close(dl->physical); 230 datalink_HangupDone(dl); 231 } 232 } else { 233 dl->dial.tries = -1; 234 dl->dial.incs = 0; 235 236 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 237 async_Init(&dl->physical->async); 238 239 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 240 0 : dl->physical->link.lcp.cfg.openmode); 241 ccp_Setup(&dl->physical->link.ccp); 242 243 datalink_NewState(dl, DATALINK_LCP); 244 fsm_Up(&dl->physical->link.lcp.fsm); 245 fsm_Open(&dl->physical->link.lcp.fsm); 246 } 247} 248 249static int 250datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 251 int *n) 252{ 253 struct datalink *dl = descriptor2datalink(d); 254 int result; 255 256 result = 0; 257 switch (dl->state) { 258 case DATALINK_CLOSED: 259 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND| 260 PHYS_FOREGROUND|PHYS_DDIAL)) && 261 !dl->bundle->CleaningUp) 262 /* 263 * Our first time in - DEDICATED & DDIAL never come down, and 264 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter 265 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up() 266 * and fall through. 267 */ 268 datalink_Up(dl, 1, 1); 269 else 270 break; 271 /* fall through */ 272 273 case DATALINK_OPENING: 274 if (dl->dial.timer.state != TIMER_RUNNING) { 275 if (--dl->dial.tries < 0) 276 dl->dial.tries = 0; 277 if (physical_Open(dl->physical, dl->bundle) >= 0) { 278 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n" 279 "Type `~?' for help\r\n", dl->name, 280 dl->physical->name.full); 281 if (dl->script.run) { 282 datalink_NewState(dl, DATALINK_DIAL); 283 if (!chat_Setup(&dl->chat, dl->cfg.script.dial, 284 *dl->cfg.script.dial ? 285 datalink_ChoosePhoneNumber(dl) : "")) 286 log_Printf(LogWARN, "Invalid dial script\n"); 287 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 288 dl->cfg.dial.max) 289 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 290 dl->name, dl->cfg.dial.max - dl->dial.tries, 291 dl->cfg.dial.max); 292 } else 293 datalink_NewState(dl, DATALINK_CARRIER); 294 return datalink_UpdateSet(d, r, w, e, n); 295 } else { 296 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 297 dl->cfg.dial.max) 298 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n", 299 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max); 300 else 301 log_Printf(LogCHAT, "Failed to open device\n"); 302 303 if (dl->bundle->CleaningUp || 304 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 305 dl->cfg.dial.max && dl->dial.tries == 0)) { 306 datalink_NewState(dl, DATALINK_CLOSED); 307 dl->reconnect_tries = 0; 308 dl->dial.tries = -1; 309 log_WritePrompts(dl, "Failed to open %s\n", 310 dl->physical->name.full); 311 bundle_LinkClosed(dl->bundle, dl); 312 } 313 if (!dl->bundle->CleaningUp) { 314 int timeout; 315 316 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 317 bundle_Notify(dl->bundle, EX_REDIAL); 318 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n", 319 dl->physical->name.full, timeout); 320 } 321 } 322 } 323 break; 324 325 case DATALINK_CARRIER: 326 /* Wait for carrier on the device */ 327 switch (physical_AwaitCarrier(dl->physical)) { 328 case CARRIER_PENDING: 329 log_Printf(LogDEBUG, "Waiting for carrier\n"); 330 return 0; /* A device timer is running to wake us up again */ 331 332 case CARRIER_OK: 333 if (dl->script.run) { 334 datalink_NewState(dl, DATALINK_LOGIN); 335 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL)) 336 log_Printf(LogWARN, "Invalid login script\n"); 337 } else 338 datalink_LoginDone(dl); 339 return datalink_UpdateSet(d, r, w, e, n); 340 341 case CARRIER_LOST: 342 physical_Offline(dl->physical); /* Is this required ? */ 343 if (dl->script.run) { 344 datalink_NewState(dl, DATALINK_HANGUP); 345 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 346 log_Printf(LogWARN, "Invalid hangup script\n"); 347 return datalink_UpdateSet(d, r, w, e, n); 348 } else { 349 datalink_HangupDone(dl); 350 return 0; /* Maybe bundle_CleanDatalinks() has something to do */ 351 } 352 } 353 354 case DATALINK_HANGUP: 355 case DATALINK_DIAL: 356 case DATALINK_LOGOUT: 357 case DATALINK_LOGIN: 358 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 359 switch (dl->chat.state) { 360 case CHAT_DONE: 361 /* script succeeded */ 362 switch(dl->state) { 363 case DATALINK_HANGUP: 364 datalink_HangupDone(dl); 365 break; 366 case DATALINK_DIAL: 367 datalink_NewState(dl, DATALINK_CARRIER); 368 return datalink_UpdateSet(d, r, w, e, n); 369 case DATALINK_LOGOUT: 370 datalink_NewState(dl, DATALINK_HANGUP); 371 physical_Offline(dl->physical); 372 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 373 log_Printf(LogWARN, "Invalid hangup script\n"); 374 return datalink_UpdateSet(d, r, w, e, n); 375 case DATALINK_LOGIN: 376 dl->phone.alt = NULL; 377 datalink_LoginDone(dl); 378 return datalink_UpdateSet(d, r, w, e, n); 379 } 380 break; 381 case CHAT_FAILED: 382 /* Going down - script failed */ 383 log_Printf(LogWARN, "Chat script failed\n"); 384 switch(dl->state) { 385 case DATALINK_HANGUP: 386 datalink_HangupDone(dl); 387 break; 388 case DATALINK_DIAL: 389 case DATALINK_LOGOUT: 390 case DATALINK_LOGIN: 391 datalink_NewState(dl, DATALINK_HANGUP); 392 physical_Offline(dl->physical); 393 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 394 log_Printf(LogWARN, "Invalid hangup script\n"); 395 return datalink_UpdateSet(d, r, w, e, n); 396 } 397 break; 398 } 399 break; 400 401 case DATALINK_READY: 402 case DATALINK_LCP: 403 case DATALINK_AUTH: 404 case DATALINK_CBCP: 405 case DATALINK_OPEN: 406 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) + 407 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 408 break; 409 } 410 return result; 411} 412 413int 414datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 415{ 416 return physical_RemoveFromSet(dl->physical, r, w, e); 417} 418 419static int 420datalink_IsSet(struct fdescriptor *d, const fd_set *fdset) 421{ 422 struct datalink *dl = descriptor2datalink(d); 423 424 switch (dl->state) { 425 case DATALINK_CLOSED: 426 case DATALINK_OPENING: 427 break; 428 429 case DATALINK_HANGUP: 430 case DATALINK_DIAL: 431 case DATALINK_LOGOUT: 432 case DATALINK_LOGIN: 433 return descriptor_IsSet(&dl->chat.desc, fdset); 434 435 case DATALINK_READY: 436 case DATALINK_LCP: 437 case DATALINK_AUTH: 438 case DATALINK_CBCP: 439 case DATALINK_OPEN: 440 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 : 441 descriptor_IsSet(&dl->physical->desc, fdset); 442 } 443 return 0; 444} 445 446static void 447datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset) 448{ 449 struct datalink *dl = descriptor2datalink(d); 450 451 switch (dl->state) { 452 case DATALINK_CLOSED: 453 case DATALINK_OPENING: 454 break; 455 456 case DATALINK_HANGUP: 457 case DATALINK_DIAL: 458 case DATALINK_LOGOUT: 459 case DATALINK_LOGIN: 460 descriptor_Read(&dl->chat.desc, bundle, fdset); 461 break; 462 463 case DATALINK_READY: 464 case DATALINK_LCP: 465 case DATALINK_AUTH: 466 case DATALINK_CBCP: 467 case DATALINK_OPEN: 468 if (descriptor_IsSet(&dl->chap.desc, fdset)) 469 descriptor_Read(&dl->chap.desc, bundle, fdset); 470 if (descriptor_IsSet(&dl->physical->desc, fdset)) 471 descriptor_Read(&dl->physical->desc, bundle, fdset); 472 break; 473 } 474} 475 476static int 477datalink_Write(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset) 478{ 479 struct datalink *dl = descriptor2datalink(d); 480 int result = 0; 481 482 switch (dl->state) { 483 case DATALINK_CLOSED: 484 case DATALINK_OPENING: 485 break; 486 487 case DATALINK_HANGUP: 488 case DATALINK_DIAL: 489 case DATALINK_LOGOUT: 490 case DATALINK_LOGIN: 491 result = descriptor_Write(&dl->chat.desc, bundle, fdset); 492 break; 493 494 case DATALINK_READY: 495 case DATALINK_LCP: 496 case DATALINK_AUTH: 497 case DATALINK_CBCP: 498 case DATALINK_OPEN: 499 if (descriptor_IsSet(&dl->chap.desc, fdset)) 500 result += descriptor_Write(&dl->chap.desc, bundle, fdset); 501 if (descriptor_IsSet(&dl->physical->desc, fdset)) 502 result += descriptor_Write(&dl->physical->desc, bundle, fdset); 503 break; 504 } 505 506 return result; 507} 508 509static void 510datalink_ComeDown(struct datalink *dl, int how) 511{ 512 if (how != CLOSE_NORMAL) { 513 dl->dial.tries = -1; 514 dl->reconnect_tries = 0; 515 if (dl->state >= DATALINK_READY && how == CLOSE_LCP) 516 dl->stayonline = 1; 517 } 518 519 if (dl->state >= DATALINK_READY && dl->stayonline) { 520 dl->stayonline = 0; 521 physical_StopDeviceTimer(dl->physical); 522 datalink_NewState(dl, DATALINK_READY); 523 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 524 physical_Offline(dl->physical); 525 if (dl->script.run && dl->state != DATALINK_OPENING) { 526 if (dl->state == DATALINK_LOGOUT) { 527 datalink_NewState(dl, DATALINK_HANGUP); 528 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 529 log_Printf(LogWARN, "Invalid hangup script\n"); 530 } else { 531 datalink_NewState(dl, DATALINK_LOGOUT); 532 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 533 log_Printf(LogWARN, "Invalid logout script\n"); 534 } 535 } else 536 datalink_HangupDone(dl); 537 } 538} 539 540static void 541datalink_LayerStart(void *v, struct fsm *fp) 542{ 543 /* The given FSM is about to start up ! */ 544 struct datalink *dl = (struct datalink *)v; 545 546 if (fp->proto == PROTO_LCP) 547 (*dl->parent->LayerStart)(dl->parent->object, fp); 548} 549 550static void 551datalink_LayerUp(void *v, struct fsm *fp) 552{ 553 /* The given fsm is now up */ 554 struct datalink *dl = (struct datalink *)v; 555 struct lcp *lcp = &dl->physical->link.lcp; 556 557 if (fp->proto == PROTO_LCP) { 558 datalink_GotAuthname(dl, ""); 559 lcp->auth_ineed = lcp->want_auth; 560 lcp->auth_iwait = lcp->his_auth; 561 if (lcp->his_auth || lcp->want_auth) { 562 if (bundle_Phase(dl->bundle) != PHASE_NETWORK) 563 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 564 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 565 Auth2Nam(lcp->his_auth, lcp->his_authtype), 566 Auth2Nam(lcp->want_auth, lcp->want_authtype)); 567 if (lcp->his_auth == PROTO_PAP) 568 auth_StartReq(&dl->pap); 569 if (lcp->want_auth == PROTO_CHAP) 570 auth_StartReq(&dl->chap.auth); 571 } else 572 datalink_AuthOk(dl); 573 } 574} 575 576static void 577datalink_AuthReInit(struct datalink *dl) 578{ 579 auth_StopTimer(&dl->pap); 580 auth_StopTimer(&dl->chap.auth); 581 chap_ReInit(&dl->chap); 582} 583 584void 585datalink_GotAuthname(struct datalink *dl, const char *name) 586{ 587 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1); 588 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0'; 589} 590 591void 592datalink_NCPUp(struct datalink *dl) 593{ 594 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp); 595 596 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 597 /* we've authenticated in multilink mode ! */ 598 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 599 case MP_LINKSENT: 600 /* We've handed the link off to another ppp (well, we will soon) ! */ 601 return; 602 case MP_UP: 603 /* First link in the bundle */ 604 auth_Select(dl->bundle, dl->peer.authname); 605 bundle_CalculateBandwidth(dl->bundle); 606 /* fall through */ 607 case MP_ADDED: 608 /* We're in multilink mode ! */ 609 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 610 bundle_CalculateBandwidth(dl->bundle); 611 break; 612 case MP_FAILED: 613 datalink_AuthNotOk(dl); 614 return; 615 } 616 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 617 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 618 datalink_NewState(dl, DATALINK_OPEN); 619 bundle_CalculateBandwidth(dl->bundle); 620 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 621 return; 622 } else { 623 dl->bundle->ncp.mp.peer = dl->peer; 624 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link); 625 auth_Select(dl->bundle, dl->peer.authname); 626 } 627 628 if (ccpok) { 629 fsm_Up(&dl->physical->link.ccp.fsm); 630 fsm_Open(&dl->physical->link.ccp.fsm); 631 } 632 datalink_NewState(dl, DATALINK_OPEN); 633 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 634 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 635} 636 637void 638datalink_CBCPComplete(struct datalink *dl) 639{ 640 datalink_NewState(dl, DATALINK_LCP); 641 datalink_AuthReInit(dl); 642 fsm_Close(&dl->physical->link.lcp.fsm); 643} 644 645void 646datalink_CBCPFailed(struct datalink *dl) 647{ 648 cbcp_Down(&dl->cbcp); 649 datalink_CBCPComplete(dl); 650} 651 652void 653datalink_AuthOk(struct datalink *dl) 654{ 655 if ((dl->physical->link.lcp.his_callback.opmask & 656 CALLBACK_BIT(CALLBACK_CBCP) || 657 dl->physical->link.lcp.want_callback.opmask & 658 CALLBACK_BIT(CALLBACK_CBCP)) && 659 !(dl->physical->link.lcp.want_callback.opmask & 660 CALLBACK_BIT(CALLBACK_AUTH))) { 661 /* We must have agreed CBCP if AUTH isn't there any more */ 662 datalink_NewState(dl, DATALINK_CBCP); 663 cbcp_Up(&dl->cbcp); 664 } else if (dl->physical->link.lcp.want_callback.opmask) { 665 /* It's not CBCP */ 666 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name); 667 datalink_NewState(dl, DATALINK_LCP); 668 datalink_AuthReInit(dl); 669 fsm_Close(&dl->physical->link.lcp.fsm); 670 } else 671 switch (dl->physical->link.lcp.his_callback.opmask) { 672 case 0: 673 datalink_NCPUp(dl); 674 break; 675 676 case CALLBACK_BIT(CALLBACK_AUTH): 677 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone, 678 sizeof dl->cbcp.fsm.phone); 679 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) { 680 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name, 681 dl->peer.authname); 682 *dl->cbcp.fsm.phone = '\0'; 683 } else { 684 char *ptr = strchr(dl->cbcp.fsm.phone, ','); 685 if (ptr) 686 *ptr = '\0'; /* Call back on the first number */ 687 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 688 dl->cbcp.fsm.phone); 689 dl->cbcp.required = 1; 690 } 691 dl->cbcp.fsm.delay = 0; 692 datalink_NewState(dl, DATALINK_LCP); 693 datalink_AuthReInit(dl); 694 fsm_Close(&dl->physical->link.lcp.fsm); 695 break; 696 697 case CALLBACK_BIT(CALLBACK_E164): 698 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg, 699 sizeof dl->cbcp.fsm.phone - 1); 700 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0'; 701 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 702 dl->cbcp.fsm.phone); 703 dl->cbcp.required = 1; 704 dl->cbcp.fsm.delay = 0; 705 datalink_NewState(dl, DATALINK_LCP); 706 datalink_AuthReInit(dl); 707 fsm_Close(&dl->physical->link.lcp.fsm); 708 break; 709 710 default: 711 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n", 712 dl->name); 713 datalink_NewState(dl, DATALINK_LCP); 714 datalink_AuthReInit(dl); 715 fsm_Close(&dl->physical->link.lcp.fsm); 716 break; 717 } 718} 719 720void 721datalink_AuthNotOk(struct datalink *dl) 722{ 723 datalink_NewState(dl, DATALINK_LCP); 724 datalink_AuthReInit(dl); 725 fsm_Close(&dl->physical->link.lcp.fsm); 726} 727 728static void 729datalink_LayerDown(void *v, struct fsm *fp) 730{ 731 /* The given FSM has been told to come down */ 732 struct datalink *dl = (struct datalink *)v; 733 734 if (fp->proto == PROTO_LCP) { 735 switch (dl->state) { 736 case DATALINK_OPEN: 737 peerid_Init(&dl->peer); 738 fsm2initial(&dl->physical->link.ccp.fsm); 739 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */ 740 (*dl->parent->LayerDown)(dl->parent->object, fp); 741 /* fall through (just in case) */ 742 743 case DATALINK_CBCP: 744 if (!dl->cbcp.required) 745 cbcp_Down(&dl->cbcp); 746 /* fall through (just in case) */ 747 748 case DATALINK_AUTH: 749 timer_Stop(&dl->pap.authtimer); 750 timer_Stop(&dl->chap.auth.authtimer); 751 } 752 datalink_NewState(dl, DATALINK_LCP); 753 datalink_AuthReInit(dl); 754 } 755} 756 757static void 758datalink_LayerFinish(void *v, struct fsm *fp) 759{ 760 /* The given fsm is now down */ 761 struct datalink *dl = (struct datalink *)v; 762 763 if (fp->proto == PROTO_LCP) { 764 fsm2initial(fp); 765 (*dl->parent->LayerFinish)(dl->parent->object, fp); 766 datalink_ComeDown(dl, CLOSE_NORMAL); 767 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 768 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 769} 770 771struct datalink * 772datalink_Create(const char *name, struct bundle *bundle, int type) 773{ 774 struct datalink *dl; 775 776 dl = (struct datalink *)malloc(sizeof(struct datalink)); 777 if (dl == NULL) 778 return dl; 779 780 dl->desc.type = DATALINK_DESCRIPTOR; 781 dl->desc.UpdateSet = datalink_UpdateSet; 782 dl->desc.IsSet = datalink_IsSet; 783 dl->desc.Read = datalink_Read; 784 dl->desc.Write = datalink_Write; 785 786 dl->state = DATALINK_CLOSED; 787 788 *dl->cfg.script.dial = '\0'; 789 *dl->cfg.script.login = '\0'; 790 *dl->cfg.script.logout = '\0'; 791 *dl->cfg.script.hangup = '\0'; 792 *dl->cfg.phone.list = '\0'; 793 *dl->phone.list = '\0'; 794 dl->phone.next = NULL; 795 dl->phone.alt = NULL; 796 dl->phone.chosen = "N/A"; 797 dl->stayonline = 0; 798 dl->script.run = 1; 799 dl->script.packetmode = 1; 800 mp_linkInit(&dl->mp); 801 802 dl->bundle = bundle; 803 dl->next = NULL; 804 805 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 806 807 dl->dial.tries = 0; 808 dl->cfg.dial.max = 1; 809 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 810 dl->cfg.dial.timeout = DIAL_TIMEOUT; 811 dl->cfg.dial.inc = 0; 812 dl->cfg.dial.maxinc = 10; 813 814 dl->reconnect_tries = 0; 815 dl->cfg.reconnect.max = 0; 816 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 817 818 dl->cfg.callback.opmask = 0; 819 dl->cfg.cbcp.delay = 0; 820 *dl->cfg.cbcp.phone = '\0'; 821 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY; 822 823 dl->name = strdup(name); 824 peerid_Init(&dl->peer); 825 dl->parent = &bundle->fsm; 826 dl->fsmp.LayerStart = datalink_LayerStart; 827 dl->fsmp.LayerUp = datalink_LayerUp; 828 dl->fsmp.LayerDown = datalink_LayerDown; 829 dl->fsmp.LayerFinish = datalink_LayerFinish; 830 dl->fsmp.object = dl; 831 832 if ((dl->physical = physical_Create(dl, type)) == NULL) { 833 free(dl->name); 834 free(dl); 835 return NULL; 836 } 837 838 pap_Init(&dl->pap, dl->physical); 839 chap_Init(&dl->chap, dl->physical); 840 cbcp_Init(&dl->cbcp, dl->physical); 841 842 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 843 chat_Init(&dl->chat, dl->physical); 844 845 log_Printf(LogPHASE, "%s: Created in %s state\n", 846 dl->name, datalink_State(dl)); 847 848 return dl; 849} 850 851struct datalink * 852datalink_Clone(struct datalink *odl, const char *name) 853{ 854 struct datalink *dl; 855 856 dl = (struct datalink *)malloc(sizeof(struct datalink)); 857 if (dl == NULL) 858 return dl; 859 860 dl->desc.type = DATALINK_DESCRIPTOR; 861 dl->desc.UpdateSet = datalink_UpdateSet; 862 dl->desc.IsSet = datalink_IsSet; 863 dl->desc.Read = datalink_Read; 864 dl->desc.Write = datalink_Write; 865 866 dl->state = DATALINK_CLOSED; 867 868 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 869 mp_linkInit(&dl->mp); 870 *dl->phone.list = '\0'; 871 dl->phone.next = NULL; 872 dl->phone.alt = NULL; 873 dl->phone.chosen = "N/A"; 874 dl->bundle = odl->bundle; 875 dl->next = NULL; 876 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 877 dl->dial.tries = 0; 878 dl->reconnect_tries = 0; 879 dl->name = strdup(name); 880 peerid_Init(&dl->peer); 881 dl->parent = odl->parent; 882 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 883 dl->fsmp.object = dl; 884 885 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) { 886 free(dl->name); 887 free(dl); 888 return NULL; 889 } 890 pap_Init(&dl->pap, dl->physical); 891 dl->pap.cfg = odl->pap.cfg; 892 893 chap_Init(&dl->chap, dl->physical); 894 dl->chap.auth.cfg = odl->chap.auth.cfg; 895 896 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 897 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 898 sizeof dl->physical->link.lcp.cfg); 899 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 900 sizeof dl->physical->link.ccp.cfg); 901 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 902 sizeof dl->physical->async.cfg); 903 904 cbcp_Init(&dl->cbcp, dl->physical); 905 906 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 907 chat_Init(&dl->chat, dl->physical); 908 909 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 910 dl->name, datalink_State(dl)); 911 912 return dl; 913} 914 915struct datalink * 916datalink_Destroy(struct datalink *dl) 917{ 918 struct datalink *result; 919 920 if (dl->state != DATALINK_CLOSED) { 921 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 922 datalink_State(dl)); 923 switch (dl->state) { 924 case DATALINK_HANGUP: 925 case DATALINK_DIAL: 926 case DATALINK_LOGIN: 927 chat_Finish(&dl->chat); /* Gotta blat the timers ! */ 928 break; 929 } 930 } 931 932 chat_Destroy(&dl->chat); 933 timer_Stop(&dl->dial.timer); 934 result = dl->next; 935 physical_Destroy(dl->physical); 936 free(dl->name); 937 free(dl); 938 939 return result; 940} 941 942void 943datalink_Up(struct datalink *dl, int runscripts, int packetmode) 944{ 945 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 946 /* Ignore scripts */ 947 runscripts = 0; 948 949 switch (dl->state) { 950 case DATALINK_CLOSED: 951 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 952 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 953 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 954 datalink_NewState(dl, DATALINK_OPENING); 955 dl->reconnect_tries = 956 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 957 dl->dial.tries = dl->cfg.dial.max; 958 dl->script.run = runscripts; 959 dl->script.packetmode = packetmode; 960 break; 961 962 case DATALINK_OPENING: 963 if (!dl->script.run && runscripts) 964 dl->script.run = 1; 965 /* fall through */ 966 967 case DATALINK_DIAL: 968 case DATALINK_LOGIN: 969 case DATALINK_READY: 970 if (!dl->script.packetmode && packetmode) { 971 dl->script.packetmode = 1; 972 if (dl->state == DATALINK_READY) { 973 dl->script.run = 0; 974 datalink_NewState(dl, DATALINK_CARRIER); 975 } 976 } 977 break; 978 } 979} 980 981void 982datalink_Close(struct datalink *dl, int how) 983{ 984 /* Please close */ 985 switch (dl->state) { 986 case DATALINK_OPEN: 987 peerid_Init(&dl->peer); 988 fsm2initial(&dl->physical->link.ccp.fsm); 989 /* fall through */ 990 991 case DATALINK_CBCP: 992 case DATALINK_AUTH: 993 case DATALINK_LCP: 994 datalink_AuthReInit(dl); 995 fsm_Close(&dl->physical->link.lcp.fsm); 996 if (how != CLOSE_NORMAL) { 997 dl->dial.tries = -1; 998 dl->reconnect_tries = 0; 999 if (how == CLOSE_LCP) 1000 dl->stayonline = 1; 1001 } 1002 break; 1003 1004 default: 1005 datalink_ComeDown(dl, how); 1006 } 1007} 1008 1009void 1010datalink_Down(struct datalink *dl, int how) 1011{ 1012 /* Carrier is lost */ 1013 switch (dl->state) { 1014 case DATALINK_OPEN: 1015 peerid_Init(&dl->peer); 1016 fsm2initial(&dl->physical->link.ccp.fsm); 1017 /* fall through */ 1018 1019 case DATALINK_CBCP: 1020 case DATALINK_AUTH: 1021 case DATALINK_LCP: 1022 fsm2initial(&dl->physical->link.lcp.fsm); 1023 if (dl->state == DATALINK_OPENING) 1024 return; /* we're doing a callback... */ 1025 /* fall through */ 1026 1027 default: 1028 datalink_ComeDown(dl, how); 1029 } 1030} 1031 1032void 1033datalink_StayDown(struct datalink *dl) 1034{ 1035 dl->reconnect_tries = 0; 1036} 1037 1038void 1039datalink_DontHangup(struct datalink *dl) 1040{ 1041 if (dl->state >= DATALINK_LCP) 1042 dl->stayonline = 1; 1043} 1044 1045int 1046datalink_Show(struct cmdargs const *arg) 1047{ 1048 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 1049 prompt_Printf(arg->prompt, " State: %s\n", 1050 datalink_State(arg->cx)); 1051 prompt_Printf(arg->prompt, " Peer name: "); 1052 if (*arg->cx->peer.authname) 1053 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 1054 else if (arg->cx->state == DATALINK_OPEN) 1055 prompt_Printf(arg->prompt, "None requested\n"); 1056 else 1057 prompt_Printf(arg->prompt, "N/A\n"); 1058 prompt_Printf(arg->prompt, " Discriminator: %s\n", 1059 mp_Enddisc(arg->cx->peer.enddisc.class, 1060 arg->cx->peer.enddisc.address, 1061 arg->cx->peer.enddisc.len)); 1062 1063 prompt_Printf(arg->prompt, "\nDefaults:\n"); 1064 prompt_Printf(arg->prompt, " Phone List: %s\n", 1065 arg->cx->cfg.phone.list); 1066 if (arg->cx->cfg.dial.max) 1067 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 1068 arg->cx->cfg.dial.max); 1069 else 1070 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 1071 if (arg->cx->cfg.dial.next_timeout >= 0) 1072 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 1073 else 1074 prompt_Printf(arg->prompt, "random/"); 1075 if (arg->cx->cfg.dial.timeout >= 0) 1076 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 1077 else 1078 prompt_Printf(arg->prompt, "random\n"); 1079 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 1080 arg->cx->cfg.reconnect.max); 1081 if (arg->cx->cfg.reconnect.timeout > 0) 1082 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 1083 else 1084 prompt_Printf(arg->prompt, "random\n"); 1085 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 1086 PHYS_DIRECT ? "accepted: " : "requested:"); 1087 if (!arg->cx->cfg.callback.opmask) 1088 prompt_Printf(arg->prompt, "none\n"); 1089 else { 1090 int comma = 0; 1091 1092 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 1093 prompt_Printf(arg->prompt, "none"); 1094 comma = 1; 1095 } 1096 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 1097 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 1098 comma = 1; 1099 } 1100 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 1101 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 1102 if (arg->cx->physical->type != PHYS_DIRECT) 1103 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 1104 comma = 1; 1105 } 1106 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 1107 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 1108 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 1109 arg->cx->cfg.cbcp.delay); 1110 prompt_Printf(arg->prompt, " phone: "); 1111 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 1112 if (arg->cx->physical->type & PHYS_DIRECT) 1113 prompt_Printf(arg->prompt, "Caller decides\n"); 1114 else 1115 prompt_Printf(arg->prompt, "Dialback server decides\n"); 1116 } else 1117 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 1118 prompt_Printf(arg->prompt, " timeout: %lds\n", 1119 arg->cx->cfg.cbcp.fsmretry); 1120 } else 1121 prompt_Printf(arg->prompt, "\n"); 1122 } 1123 1124 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1125 arg->cx->cfg.script.dial); 1126 prompt_Printf(arg->prompt, " Login Script: %s\n", 1127 arg->cx->cfg.script.login); 1128 prompt_Printf(arg->prompt, " Logout Script: %s\n", 1129 arg->cx->cfg.script.logout); 1130 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1131 arg->cx->cfg.script.hangup); 1132 return 0; 1133} 1134 1135int 1136datalink_SetReconnect(struct cmdargs const *arg) 1137{ 1138 if (arg->argc == arg->argn+2) { 1139 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1140 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1141 return 0; 1142 } 1143 return -1; 1144} 1145 1146int 1147datalink_SetRedial(struct cmdargs const *arg) 1148{ 1149 const char *sep, *osep; 1150 int timeout, inc, maxinc, tries; 1151 1152 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1153 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1154 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1155 arg->cx->cfg.dial.timeout = -1; 1156 randinit(); 1157 } else { 1158 timeout = atoi(arg->argv[arg->argn]); 1159 1160 if (timeout >= 0) 1161 arg->cx->cfg.dial.timeout = timeout; 1162 else { 1163 log_Printf(LogWARN, "Invalid redial timeout\n"); 1164 return -1; 1165 } 1166 } 1167 1168 sep = strchr(arg->argv[arg->argn], '+'); 1169 if (sep) { 1170 inc = atoi(++sep); 1171 osep = sep; 1172 if (inc >= 0) 1173 arg->cx->cfg.dial.inc = inc; 1174 else { 1175 log_Printf(LogWARN, "Invalid timeout increment\n"); 1176 return -1; 1177 } 1178 sep = strchr(sep, '-'); 1179 if (sep) { 1180 maxinc = atoi(++sep); 1181 if (maxinc >= 0) 1182 arg->cx->cfg.dial.maxinc = maxinc; 1183 else { 1184 log_Printf(LogWARN, "Invalid maximum timeout increments\n"); 1185 return -1; 1186 } 1187 } else { 1188 /* Default timeout increment */ 1189 arg->cx->cfg.dial.maxinc = 10; 1190 sep = osep; 1191 } 1192 } else { 1193 /* Default timeout increment & max increment */ 1194 arg->cx->cfg.dial.inc = 0; 1195 arg->cx->cfg.dial.maxinc = 10; 1196 sep = arg->argv[arg->argn]; 1197 } 1198 1199 sep = strchr(sep, '.'); 1200 if (sep) { 1201 if (strcasecmp(++sep, "random") == 0) { 1202 arg->cx->cfg.dial.next_timeout = -1; 1203 randinit(); 1204 } else { 1205 timeout = atoi(sep); 1206 if (timeout >= 0) 1207 arg->cx->cfg.dial.next_timeout = timeout; 1208 else { 1209 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1210 return -1; 1211 } 1212 } 1213 } else 1214 /* Default next timeout */ 1215 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1216 1217 if (arg->argc == arg->argn+2) { 1218 tries = atoi(arg->argv[arg->argn+1]); 1219 1220 if (tries >= 0) { 1221 arg->cx->cfg.dial.max = tries; 1222 } else { 1223 log_Printf(LogWARN, "Invalid retry value\n"); 1224 return 1; 1225 } 1226 } 1227 return 0; 1228 } 1229 1230 return -1; 1231} 1232 1233static const char * const states[] = { 1234 "closed", 1235 "opening", 1236 "hangup", 1237 "dial", 1238 "carrier", 1239 "logout", 1240 "login", 1241 "ready", 1242 "lcp", 1243 "auth", 1244 "cbcp", 1245 "open" 1246}; 1247 1248const char * 1249datalink_State(struct datalink *dl) 1250{ 1251 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1252 return "unknown"; 1253 return states[dl->state]; 1254} 1255 1256static void 1257datalink_NewState(struct datalink *dl, int state) 1258{ 1259 if (state != dl->state) { 1260 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1261 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1262 states[state]); 1263 dl->state = state; 1264 } else 1265 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1266 } 1267} 1268 1269struct datalink * 1270iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1271 int fd, int *auxfd, int *nauxfd) 1272{ 1273 struct datalink *dl, *cdl; 1274 struct fsm_retry copy; 1275 char *oname; 1276 1277 dl = (struct datalink *)iov[(*niov)++].iov_base; 1278 dl->name = iov[*niov].iov_base; 1279 1280 if (dl->name[DATALINK_MAXNAME-1]) { 1281 dl->name[DATALINK_MAXNAME-1] = '\0'; 1282 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1283 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1284 } 1285 1286 /* Make sure the name is unique ! */ 1287 oname = NULL; 1288 do { 1289 for (cdl = bundle->links; cdl; cdl = cdl->next) 1290 if (!strcasecmp(dl->name, cdl->name)) { 1291 if (oname) 1292 free(datalink_NextName(dl)); 1293 else 1294 oname = datalink_NextName(dl); 1295 break; /* Keep renaming 'till we have no conflicts */ 1296 } 1297 } while (cdl); 1298 1299 if (oname) { 1300 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1301 free(oname); 1302 } else { 1303 dl->name = strdup(dl->name); 1304 free(iov[*niov].iov_base); 1305 } 1306 (*niov)++; 1307 1308 dl->desc.type = DATALINK_DESCRIPTOR; 1309 dl->desc.UpdateSet = datalink_UpdateSet; 1310 dl->desc.IsSet = datalink_IsSet; 1311 dl->desc.Read = datalink_Read; 1312 dl->desc.Write = datalink_Write; 1313 1314 mp_linkInit(&dl->mp); 1315 *dl->phone.list = '\0'; 1316 dl->phone.next = NULL; 1317 dl->phone.alt = NULL; 1318 dl->phone.chosen = "N/A"; 1319 1320 dl->bundle = bundle; 1321 dl->next = NULL; 1322 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 1323 dl->dial.tries = 0; 1324 dl->reconnect_tries = 0; 1325 dl->parent = &bundle->fsm; 1326 dl->fsmp.LayerStart = datalink_LayerStart; 1327 dl->fsmp.LayerUp = datalink_LayerUp; 1328 dl->fsmp.LayerDown = datalink_LayerDown; 1329 dl->fsmp.LayerFinish = datalink_LayerFinish; 1330 dl->fsmp.object = dl; 1331 1332 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd); 1333 1334 if (!dl->physical) { 1335 free(dl->name); 1336 free(dl); 1337 dl = NULL; 1338 } else { 1339 copy = dl->pap.cfg.fsm; 1340 pap_Init(&dl->pap, dl->physical); 1341 dl->pap.cfg.fsm = copy; 1342 1343 copy = dl->chap.auth.cfg.fsm; 1344 chap_Init(&dl->chap, dl->physical); 1345 dl->chap.auth.cfg.fsm = copy; 1346 1347 cbcp_Init(&dl->cbcp, dl->physical); 1348 1349 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 1350 chat_Init(&dl->chat, dl->physical); 1351 1352 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1353 dl->name, datalink_State(dl)); 1354 } 1355 1356 return dl; 1357} 1358 1359int 1360datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1361 int *auxfd, int *nauxfd) 1362{ 1363 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1364 int link_fd; 1365 1366 if (dl) { 1367 timer_Stop(&dl->dial.timer); 1368 /* The following is purely for the sake of paranoia */ 1369 cbcp_Down(&dl->cbcp); 1370 timer_Stop(&dl->pap.authtimer); 1371 timer_Stop(&dl->chap.auth.authtimer); 1372 } 1373 1374 if (*niov >= maxiov - 1) { 1375 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1376 if (dl) { 1377 free(dl->name); 1378 free(dl); 1379 } 1380 return -1; 1381 } 1382 1383 iov[*niov].iov_base = (void *)dl; 1384 iov[(*niov)++].iov_len = sizeof *dl; 1385 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL; 1386 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1387 1388 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd, 1389 nauxfd); 1390 1391 if (link_fd == -1 && dl) { 1392 free(dl->name); 1393 free(dl); 1394 } 1395 1396 return link_fd; 1397} 1398 1399void 1400datalink_Rename(struct datalink *dl, const char *name) 1401{ 1402 free(dl->name); 1403 dl->physical->link.name = dl->name = strdup(name); 1404} 1405 1406char * 1407datalink_NextName(struct datalink *dl) 1408{ 1409 int f, n; 1410 char *name, *oname; 1411 1412 n = strlen(dl->name); 1413 name = (char *)malloc(n+3); 1414 for (f = n - 1; f >= 0; f--) 1415 if (!isdigit(dl->name[f])) 1416 break; 1417 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1418 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1419 oname = dl->name; 1420 dl->name = name; 1421 /* our physical link name isn't updated (it probably isn't created yet) */ 1422 return oname; 1423} 1424 1425int 1426datalink_SetMode(struct datalink *dl, int mode) 1427{ 1428 if (!physical_SetMode(dl->physical, mode)) 1429 return 0; 1430 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1431 dl->script.run = 0; 1432 if (dl->physical->type == PHYS_DIRECT) 1433 dl->reconnect_tries = 0; 1434 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) && 1435 dl->state <= DATALINK_READY) 1436 datalink_Up(dl, 1, 1); 1437 return 1; 1438} 1439 1440int 1441datalink_GetDialTimeout(struct datalink *dl) 1442{ 1443 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc; 1444 1445 if (dl->dial.incs < dl->cfg.dial.maxinc) 1446 dl->dial.incs++; 1447 1448 return result; 1449} 1450