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 * $FreeBSD$ 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/socket.h> 34 #include <sys/un.h> 35 36 #include <ctype.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <sys/uio.h> 41 #include <termios.h> 42 43 #include "layer.h" 44 #include "mbuf.h" 45 #include "log.h" 46 #include "defs.h" 47 #include "timer.h" 48 #include "fsm.h" 49 #include "descriptor.h" 50 #include "lqr.h" 51 #include "hdlc.h" 52 #include "lcp.h" 53 #include "async.h" 54 #include "throughput.h" 55 #include "ccp.h" 56 #include "link.h" 57 #include "physical.h" 58 #include "iplist.h" 59 #include "slcompress.h" 60 #include "ncpaddr.h" 61 #include "ipcp.h" 62 #include "filter.h" 63 #include "mp.h" 64 #ifndef NORADIUS 65 #include "radius.h" 66 #endif 67 #include "ipv6cp.h" 68 #include "ncp.h" 69 #include "bundle.h" 70 #include "chat.h" 71 #include "auth.h" 72 #include "prompt.h" 73 #include "proto.h" 74 #include "pap.h" 75 #include "chap.h" 76 #include "command.h" 77 #include "cbcp.h" 78 #include "datalink.h" 79 80 static void datalink_LoginDone(struct datalink *); 81 static void datalink_NewState(struct datalink *, int); 82 83 static void 84 datalink_OpenTimeout(void *v) 85 { 86 struct datalink *dl = (struct datalink *)v; 87 88 timer_Stop(&dl->dial.timer); 89 if (dl->state == DATALINK_OPENING) 90 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name); 91 } 92 93 static int 94 datalink_StartDialTimer(struct datalink *dl, int Timeout) 95 { 96 int result = Timeout; 97 98 timer_Stop(&dl->dial.timer); 99 if (Timeout < 0) 100 result = (random() % DIAL_TIMEOUT) + 1; 101 dl->dial.timer.load = result ? result * SECTICKS : 1; 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, result); 109 return result; 110 } 111 112 static void 113 datalink_HangupDone(struct datalink *dl) 114 { 115 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp && 116 dl->physical->fd != -1) { 117 /* Don't close our device if the link is dedicated */ 118 datalink_LoginDone(dl); 119 return; 120 } 121 122 chat_Finish(&dl->chat); 123 physical_Close(dl->physical); 124 dl->phone.chosen = "N/A"; 125 126 if (dl->cbcp.required) { 127 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone); 128 dl->cfg.callback.opmask = 0; 129 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone, 130 sizeof dl->cfg.phone.list - 1); 131 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0'; 132 dl->phone.alt = dl->phone.next = NULL; 133 dl->reconnect_tries = dl->cfg.reconnect.max; 134 dl->dial.tries = dl->cfg.dial.max; 135 dl->dial.incs = 0; 136 dl->script.run = 1; 137 dl->script.packetmode = 1; 138 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND)) 139 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n"); 140 bundle_LinksRemoved(dl->bundle); 141 /* if dial.timeout is < 0 (random), we don't override fsm.delay */ 142 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout) 143 dl->cbcp.fsm.delay = dl->cfg.dial.timeout; 144 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay); 145 cbcp_Down(&dl->cbcp); 146 datalink_NewState(dl, DATALINK_OPENING); 147 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 148 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 149 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 150 } else if (dl->bundle->CleaningUp || 151 (dl->physical->type == PHYS_DIRECT) || 152 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) && 153 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) { 154 datalink_NewState(dl, DATALINK_CLOSED); 155 dl->dial.tries = -1; 156 dl->dial.incs = 0; 157 dl->reconnect_tries = 0; 158 bundle_LinkClosed(dl->bundle, dl); 159 if (!dl->bundle->CleaningUp && 160 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND))) 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 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n", 173 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries, 174 dl->cfg.reconnect.max); 175 bundle_Notify(dl->bundle, EX_RECONNECT); 176 } else { 177 if (dl->phone.next == NULL) 178 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 179 else 180 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 181 bundle_Notify(dl->bundle, EX_REDIAL); 182 } 183 } 184 } 185 186 const char * 187 datalink_ChoosePhoneNumber(struct datalink *dl) 188 { 189 char *phone; 190 191 if (dl->phone.alt == NULL) { 192 if (dl->phone.next == NULL) { 193 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1); 194 dl->phone.list[sizeof dl->phone.list - 1] = '\0'; 195 if (*dl->phone.list == '\0') 196 return ""; 197 dl->phone.next = dl->phone.list; 198 } 199 dl->phone.alt = strsep(&dl->phone.next, ":"); 200 } 201 phone = strsep(&dl->phone.alt, "|"); 202 dl->phone.chosen = *phone ? phone : "[NONE]"; 203 if (*phone) 204 log_Printf(LogCHAT, "Phone: %s\n", phone); 205 return phone; 206 } 207 208 static void 209 datalink_LoginDone(struct datalink *dl) 210 { 211 chat_Finish(&dl->chat); 212 213 if (!dl->script.packetmode) { 214 dl->dial.tries = -1; 215 dl->dial.incs = 0; 216 datalink_NewState(dl, DATALINK_READY); 217 } else if (!physical_Raw(dl->physical)) { 218 dl->dial.tries = 0; 219 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 220 if (dl->script.run) { 221 datalink_NewState(dl, DATALINK_LOGOUT); 222 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 223 log_Printf(LogWARN, "Invalid logout script\n"); 224 } else { 225 physical_StopDeviceTimer(dl->physical); 226 if (dl->physical->type == PHYS_DEDICATED) 227 /* force a redial timeout */ 228 physical_Close(dl->physical); 229 datalink_HangupDone(dl); 230 } 231 } else { 232 dl->dial.tries = -1; 233 dl->dial.incs = 0; 234 235 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 236 async_Setup(&dl->physical->async); 237 238 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 239 0 : dl->physical->link.lcp.cfg.openmode); 240 ccp_Setup(&dl->physical->link.ccp); 241 242 datalink_NewState(dl, DATALINK_LCP); 243 fsm_Up(&dl->physical->link.lcp.fsm); 244 fsm_Open(&dl->physical->link.lcp.fsm); 245 } 246 } 247 248 static int 249 datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 250 int *n) 251 { 252 struct datalink *dl = descriptor2datalink(d); 253 int result; 254 255 result = 0; 256 switch (dl->state) { 257 case DATALINK_CLOSED: 258 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND| 259 PHYS_FOREGROUND|PHYS_DDIAL)) && 260 !dl->bundle->CleaningUp) 261 /* 262 * Our first time in - DEDICATED & DDIAL never come down, and 263 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter 264 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up() 265 * and fall through. 266 */ 267 datalink_Up(dl, 1, 1); 268 else 269 break; 270 /* fall through */ 271 272 case DATALINK_OPENING: 273 if (dl->dial.timer.state != TIMER_RUNNING) { 274 if (--dl->dial.tries < 0) 275 dl->dial.tries = 0; 276 if (physical_Open(dl->physical, dl->bundle) >= 0) { 277 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n" 278 "Type `~?' for help\r\n", dl->name, 279 dl->physical->name.full); 280 if (dl->script.run) { 281 datalink_NewState(dl, DATALINK_DIAL); 282 if (!chat_Setup(&dl->chat, dl->cfg.script.dial, 283 *dl->cfg.script.dial ? 284 datalink_ChoosePhoneNumber(dl) : "")) 285 log_Printf(LogWARN, "Invalid dial script\n"); 286 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 287 dl->cfg.dial.max) 288 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 289 dl->name, dl->cfg.dial.max - dl->dial.tries, 290 dl->cfg.dial.max); 291 } else 292 datalink_NewState(dl, DATALINK_CARRIER); 293 return datalink_UpdateSet(d, r, w, e, n); 294 } else { 295 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 296 dl->cfg.dial.max) 297 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n", 298 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max); 299 else 300 log_Printf(LogCHAT, "Failed to open device\n"); 301 302 if (dl->bundle->CleaningUp || 303 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 304 dl->cfg.dial.max && dl->dial.tries == 0)) { 305 datalink_NewState(dl, DATALINK_CLOSED); 306 dl->reconnect_tries = 0; 307 dl->dial.tries = -1; 308 log_WritePrompts(dl, "Failed to open %s\n", 309 dl->physical->name.full); 310 bundle_LinkClosed(dl->bundle, dl); 311 } 312 if (!dl->bundle->CleaningUp) { 313 int timeout; 314 315 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 316 bundle_Notify(dl->bundle, EX_REDIAL); 317 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n", 318 dl->physical->name.full, timeout); 319 } 320 } 321 } 322 break; 323 324 case DATALINK_CARRIER: 325 /* Wait for carrier on the device */ 326 switch (physical_AwaitCarrier(dl->physical)) { 327 case CARRIER_PENDING: 328 log_Printf(LogDEBUG, "Waiting for carrier\n"); 329 return 0; /* A device timer is running to wake us up again */ 330 331 case CARRIER_OK: 332 if (dl->script.run) { 333 datalink_NewState(dl, DATALINK_LOGIN); 334 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL)) 335 log_Printf(LogWARN, "Invalid login script\n"); 336 } else 337 datalink_LoginDone(dl); 338 return datalink_UpdateSet(d, r, w, e, n); 339 340 case CARRIER_LOST: 341 physical_Offline(dl->physical); /* Is this required ? */ 342 if (dl->script.run) { 343 datalink_NewState(dl, DATALINK_HANGUP); 344 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 345 log_Printf(LogWARN, "Invalid hangup script\n"); 346 return datalink_UpdateSet(d, r, w, e, n); 347 } else { 348 datalink_HangupDone(dl); 349 return 0; /* Maybe bundle_CleanDatalinks() has something to do */ 350 } 351 } 352 353 case DATALINK_HANGUP: 354 case DATALINK_DIAL: 355 case DATALINK_LOGOUT: 356 case DATALINK_LOGIN: 357 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 358 switch (dl->chat.state) { 359 case CHAT_DONE: 360 /* script succeeded */ 361 switch(dl->state) { 362 case DATALINK_HANGUP: 363 datalink_HangupDone(dl); 364 break; 365 case DATALINK_DIAL: 366 datalink_NewState(dl, DATALINK_CARRIER); 367 return datalink_UpdateSet(d, r, w, e, n); 368 case DATALINK_LOGOUT: 369 datalink_NewState(dl, DATALINK_HANGUP); 370 physical_Offline(dl->physical); 371 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 372 log_Printf(LogWARN, "Invalid hangup script\n"); 373 return datalink_UpdateSet(d, r, w, e, n); 374 case DATALINK_LOGIN: 375 dl->phone.alt = NULL; 376 datalink_LoginDone(dl); 377 return datalink_UpdateSet(d, r, w, e, n); 378 } 379 break; 380 case CHAT_FAILED: 381 /* Going down - script failed */ 382 log_Printf(LogWARN, "Chat script failed\n"); 383 switch(dl->state) { 384 case DATALINK_HANGUP: 385 datalink_HangupDone(dl); 386 break; 387 case DATALINK_DIAL: 388 case DATALINK_LOGOUT: 389 case DATALINK_LOGIN: 390 datalink_NewState(dl, DATALINK_HANGUP); 391 physical_Offline(dl->physical); 392 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 393 log_Printf(LogWARN, "Invalid hangup script\n"); 394 return datalink_UpdateSet(d, r, w, e, n); 395 } 396 break; 397 } 398 break; 399 400 case DATALINK_READY: 401 case DATALINK_LCP: 402 case DATALINK_AUTH: 403 case DATALINK_CBCP: 404 case DATALINK_OPEN: 405 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) + 406 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 407 break; 408 } 409 return result; 410 } 411 412 int 413 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 414 { 415 return physical_RemoveFromSet(dl->physical, r, w, e); 416 } 417 418 static int 419 datalink_IsSet(struct fdescriptor *d, const fd_set *fdset) 420 { 421 struct datalink *dl = descriptor2datalink(d); 422 423 switch (dl->state) { 424 case DATALINK_CLOSED: 425 case DATALINK_OPENING: 426 break; 427 428 case DATALINK_HANGUP: 429 case DATALINK_DIAL: 430 case DATALINK_LOGOUT: 431 case DATALINK_LOGIN: 432 return descriptor_IsSet(&dl->chat.desc, fdset); 433 434 case DATALINK_READY: 435 case DATALINK_LCP: 436 case DATALINK_AUTH: 437 case DATALINK_CBCP: 438 case DATALINK_OPEN: 439 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 : 440 descriptor_IsSet(&dl->physical->desc, fdset); 441 } 442 return 0; 443 } 444 445 static void 446 datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset) 447 { 448 struct datalink *dl = descriptor2datalink(d); 449 450 switch (dl->state) { 451 case DATALINK_CLOSED: 452 case DATALINK_OPENING: 453 break; 454 455 case DATALINK_HANGUP: 456 case DATALINK_DIAL: 457 case DATALINK_LOGOUT: 458 case DATALINK_LOGIN: 459 descriptor_Read(&dl->chat.desc, bundle, fdset); 460 break; 461 462 case DATALINK_READY: 463 case DATALINK_LCP: 464 case DATALINK_AUTH: 465 case DATALINK_CBCP: 466 case DATALINK_OPEN: 467 if (descriptor_IsSet(&dl->chap.desc, fdset)) 468 descriptor_Read(&dl->chap.desc, bundle, fdset); 469 if (descriptor_IsSet(&dl->physical->desc, fdset)) 470 descriptor_Read(&dl->physical->desc, bundle, fdset); 471 break; 472 } 473 } 474 475 static int 476 datalink_Write(struct fdescriptor *d, struct bundle *bundle, 477 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 if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) { 492 datalink_ComeDown(dl, CLOSE_NORMAL); 493 result = 0; 494 } 495 break; 496 497 case DATALINK_READY: 498 case DATALINK_LCP: 499 case DATALINK_AUTH: 500 case DATALINK_CBCP: 501 case DATALINK_OPEN: 502 if (descriptor_IsSet(&dl->chap.desc, fdset)) 503 switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) { 504 case -1: 505 datalink_ComeDown(dl, CLOSE_NORMAL); 506 break; 507 case 1: 508 result++; 509 } 510 if (descriptor_IsSet(&dl->physical->desc, fdset)) 511 switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) { 512 case -1: 513 datalink_ComeDown(dl, CLOSE_NORMAL); 514 break; 515 case 1: 516 result++; 517 } 518 break; 519 } 520 521 return result; 522 } 523 524 void 525 datalink_ComeDown(struct datalink *dl, int how) 526 { 527 int stayonline; 528 529 if (how == CLOSE_LCP) 530 datalink_DontHangup(dl); 531 else if (how == CLOSE_STAYDOWN) 532 datalink_StayDown(dl); 533 534 stayonline = dl->stayonline; 535 dl->stayonline = 0; 536 537 if (dl->state >= DATALINK_READY && stayonline) { 538 physical_StopDeviceTimer(dl->physical); 539 datalink_NewState(dl, DATALINK_READY); 540 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 541 physical_Offline(dl->physical); 542 if (dl->script.run && dl->state != DATALINK_OPENING) { 543 if (dl->state == DATALINK_LOGOUT) { 544 datalink_NewState(dl, DATALINK_HANGUP); 545 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 546 log_Printf(LogWARN, "Invalid hangup script\n"); 547 } else { 548 datalink_NewState(dl, DATALINK_LOGOUT); 549 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 550 log_Printf(LogWARN, "Invalid logout script\n"); 551 } 552 } else 553 datalink_HangupDone(dl); 554 } 555 } 556 557 static void 558 datalink_LayerStart(void *v, struct fsm *fp) 559 { 560 /* The given FSM is about to start up ! */ 561 struct datalink *dl = (struct datalink *)v; 562 563 if (fp->proto == PROTO_LCP) 564 (*dl->parent->LayerStart)(dl->parent->object, fp); 565 } 566 567 static void 568 datalink_LayerUp(void *v, struct fsm *fp) 569 { 570 /* The given fsm is now up */ 571 struct datalink *dl = (struct datalink *)v; 572 struct lcp *lcp = &dl->physical->link.lcp; 573 574 if (fp->proto == PROTO_LCP) { 575 datalink_GotAuthname(dl, ""); 576 lcp->auth_ineed = lcp->want_auth; 577 lcp->auth_iwait = lcp->his_auth; 578 if (lcp->his_auth || lcp->want_auth) { 579 if (bundle_Phase(dl->bundle) != PHASE_NETWORK) 580 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 581 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 582 Auth2Nam(lcp->his_auth, lcp->his_authtype), 583 Auth2Nam(lcp->want_auth, lcp->want_authtype)); 584 if (lcp->his_auth == PROTO_PAP) 585 auth_StartReq(&dl->pap); 586 if (lcp->want_auth == PROTO_CHAP) 587 auth_StartReq(&dl->chap.auth); 588 } else 589 datalink_AuthOk(dl); 590 } else if (fp->proto == PROTO_CCP) 591 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm); 592 } 593 594 static void 595 datalink_AuthReInit(struct datalink *dl) 596 { 597 auth_StopTimer(&dl->pap); 598 auth_StopTimer(&dl->chap.auth); 599 chap_ReInit(&dl->chap); 600 } 601 602 void 603 datalink_GotAuthname(struct datalink *dl, const char *name) 604 { 605 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1); 606 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0'; 607 } 608 609 void 610 datalink_NCPUp(struct datalink *dl) 611 { 612 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp); 613 614 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 615 /* we've authenticated in multilink mode ! */ 616 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 617 case MP_LINKSENT: 618 /* We've handed the link off to another ppp (well, we will soon) ! */ 619 return; 620 case MP_UP: 621 /* First link in the bundle */ 622 auth_Select(dl->bundle, dl->peer.authname); 623 bundle_CalculateBandwidth(dl->bundle); 624 /* fall through */ 625 case MP_ADDED: 626 /* We're in multilink mode ! */ 627 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 628 bundle_CalculateBandwidth(dl->bundle); 629 break; 630 case MP_FAILED: 631 datalink_AuthNotOk(dl); 632 return; 633 } 634 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 635 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 636 datalink_NewState(dl, DATALINK_OPEN); 637 bundle_CalculateBandwidth(dl->bundle); 638 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 639 return; 640 } else { 641 dl->bundle->ncp.mp.peer = dl->peer; 642 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link); 643 auth_Select(dl->bundle, dl->peer.authname); 644 } 645 646 if (ccpok) { 647 fsm_Up(&dl->physical->link.ccp.fsm); 648 fsm_Open(&dl->physical->link.ccp.fsm); 649 } 650 datalink_NewState(dl, DATALINK_OPEN); 651 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 652 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 653 } 654 655 void 656 datalink_CBCPComplete(struct datalink *dl) 657 { 658 datalink_NewState(dl, DATALINK_LCP); 659 datalink_AuthReInit(dl); 660 fsm_Close(&dl->physical->link.lcp.fsm); 661 } 662 663 void 664 datalink_CBCPFailed(struct datalink *dl) 665 { 666 cbcp_Down(&dl->cbcp); 667 datalink_CBCPComplete(dl); 668 } 669 670 void 671 datalink_AuthOk(struct datalink *dl) 672 { 673 if ((dl->physical->link.lcp.his_callback.opmask & 674 CALLBACK_BIT(CALLBACK_CBCP) || 675 dl->physical->link.lcp.want_callback.opmask & 676 CALLBACK_BIT(CALLBACK_CBCP)) && 677 !(dl->physical->link.lcp.want_callback.opmask & 678 CALLBACK_BIT(CALLBACK_AUTH))) { 679 /* We must have agreed CBCP if AUTH isn't there any more */ 680 datalink_NewState(dl, DATALINK_CBCP); 681 cbcp_Up(&dl->cbcp); 682 } else if (dl->physical->link.lcp.want_callback.opmask) { 683 /* It's not CBCP */ 684 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name); 685 datalink_NewState(dl, DATALINK_LCP); 686 datalink_AuthReInit(dl); 687 fsm_Close(&dl->physical->link.lcp.fsm); 688 } else 689 switch (dl->physical->link.lcp.his_callback.opmask) { 690 case 0: 691 datalink_NCPUp(dl); 692 break; 693 694 case CALLBACK_BIT(CALLBACK_AUTH): 695 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone, 696 sizeof dl->cbcp.fsm.phone); 697 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) { 698 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name, 699 dl->peer.authname); 700 *dl->cbcp.fsm.phone = '\0'; 701 } else { 702 char *ptr = strchr(dl->cbcp.fsm.phone, ','); 703 if (ptr) 704 *ptr = '\0'; /* Call back on the first number */ 705 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 706 dl->cbcp.fsm.phone); 707 dl->cbcp.required = 1; 708 } 709 dl->cbcp.fsm.delay = 0; 710 datalink_NewState(dl, DATALINK_LCP); 711 datalink_AuthReInit(dl); 712 fsm_Close(&dl->physical->link.lcp.fsm); 713 break; 714 715 case CALLBACK_BIT(CALLBACK_E164): 716 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg, 717 sizeof dl->cbcp.fsm.phone - 1); 718 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0'; 719 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 720 dl->cbcp.fsm.phone); 721 dl->cbcp.required = 1; 722 dl->cbcp.fsm.delay = 0; 723 datalink_NewState(dl, DATALINK_LCP); 724 datalink_AuthReInit(dl); 725 fsm_Close(&dl->physical->link.lcp.fsm); 726 break; 727 728 default: 729 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n", 730 dl->name); 731 datalink_NewState(dl, DATALINK_LCP); 732 datalink_AuthReInit(dl); 733 fsm_Close(&dl->physical->link.lcp.fsm); 734 break; 735 } 736 } 737 738 void 739 datalink_AuthNotOk(struct datalink *dl) 740 { 741 datalink_NewState(dl, DATALINK_LCP); 742 datalink_AuthReInit(dl); 743 fsm_Close(&dl->physical->link.lcp.fsm); 744 } 745 746 static void 747 datalink_LayerDown(void *v, struct fsm *fp) 748 { 749 /* The given FSM has been told to come down */ 750 struct datalink *dl = (struct datalink *)v; 751 752 if (fp->proto == PROTO_LCP) { 753 switch (dl->state) { 754 case DATALINK_OPEN: 755 peerid_Init(&dl->peer); 756 fsm2initial(&dl->physical->link.ccp.fsm); 757 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */ 758 (*dl->parent->LayerDown)(dl->parent->object, fp); 759 /* fall through (just in case) */ 760 761 case DATALINK_CBCP: 762 if (!dl->cbcp.required) 763 cbcp_Down(&dl->cbcp); 764 /* fall through (just in case) */ 765 766 case DATALINK_AUTH: 767 timer_Stop(&dl->pap.authtimer); 768 timer_Stop(&dl->chap.auth.authtimer); 769 } 770 datalink_NewState(dl, DATALINK_LCP); 771 datalink_AuthReInit(dl); 772 } 773 } 774 775 static void 776 datalink_LayerFinish(void *v, struct fsm *fp) 777 { 778 /* The given fsm is now down */ 779 struct datalink *dl = (struct datalink *)v; 780 781 if (fp->proto == PROTO_LCP) { 782 fsm2initial(fp); 783 (*dl->parent->LayerFinish)(dl->parent->object, fp); 784 datalink_ComeDown(dl, CLOSE_NORMAL); 785 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 786 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 787 } 788 789 struct datalink * 790 datalink_Create(const char *name, struct bundle *bundle, int type) 791 { 792 struct datalink *dl; 793 794 dl = (struct datalink *)malloc(sizeof(struct datalink)); 795 if (dl == NULL) 796 return dl; 797 798 dl->desc.type = DATALINK_DESCRIPTOR; 799 dl->desc.UpdateSet = datalink_UpdateSet; 800 dl->desc.IsSet = datalink_IsSet; 801 dl->desc.Read = datalink_Read; 802 dl->desc.Write = datalink_Write; 803 804 dl->state = DATALINK_CLOSED; 805 806 *dl->cfg.script.dial = '\0'; 807 *dl->cfg.script.login = '\0'; 808 *dl->cfg.script.logout = '\0'; 809 *dl->cfg.script.hangup = '\0'; 810 *dl->cfg.phone.list = '\0'; 811 *dl->phone.list = '\0'; 812 dl->phone.next = NULL; 813 dl->phone.alt = NULL; 814 dl->phone.chosen = "N/A"; 815 dl->stayonline = 0; 816 dl->script.run = 1; 817 dl->script.packetmode = 1; 818 mp_linkInit(&dl->mp); 819 820 dl->bundle = bundle; 821 dl->next = NULL; 822 823 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 824 825 dl->dial.tries = 0; 826 dl->cfg.dial.max = 1; 827 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 828 dl->cfg.dial.timeout = DIAL_TIMEOUT; 829 dl->cfg.dial.inc = 0; 830 dl->cfg.dial.maxinc = 10; 831 832 dl->reconnect_tries = 0; 833 dl->cfg.reconnect.max = 0; 834 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 835 836 dl->cfg.callback.opmask = 0; 837 dl->cfg.cbcp.delay = 0; 838 *dl->cfg.cbcp.phone = '\0'; 839 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY; 840 841 dl->name = strdup(name); 842 peerid_Init(&dl->peer); 843 dl->parent = &bundle->fsm; 844 dl->fsmp.LayerStart = datalink_LayerStart; 845 dl->fsmp.LayerUp = datalink_LayerUp; 846 dl->fsmp.LayerDown = datalink_LayerDown; 847 dl->fsmp.LayerFinish = datalink_LayerFinish; 848 dl->fsmp.object = dl; 849 850 if ((dl->physical = physical_Create(dl, type)) == NULL) { 851 free(dl->name); 852 free(dl); 853 return NULL; 854 } 855 856 pap_Init(&dl->pap, dl->physical); 857 chap_Init(&dl->chap, dl->physical); 858 cbcp_Init(&dl->cbcp, dl->physical); 859 860 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 861 chat_Init(&dl->chat, dl->physical); 862 863 log_Printf(LogPHASE, "%s: Created in %s state\n", 864 dl->name, datalink_State(dl)); 865 866 return dl; 867 } 868 869 struct datalink * 870 datalink_Clone(struct datalink *odl, const char *name) 871 { 872 struct datalink *dl; 873 874 dl = (struct datalink *)malloc(sizeof(struct datalink)); 875 if (dl == NULL) 876 return dl; 877 878 dl->desc.type = DATALINK_DESCRIPTOR; 879 dl->desc.UpdateSet = datalink_UpdateSet; 880 dl->desc.IsSet = datalink_IsSet; 881 dl->desc.Read = datalink_Read; 882 dl->desc.Write = datalink_Write; 883 884 dl->state = DATALINK_CLOSED; 885 886 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 887 mp_linkInit(&dl->mp); 888 *dl->phone.list = '\0'; 889 dl->phone.next = NULL; 890 dl->phone.alt = NULL; 891 dl->phone.chosen = "N/A"; 892 dl->bundle = odl->bundle; 893 dl->next = NULL; 894 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 895 dl->dial.tries = 0; 896 dl->reconnect_tries = 0; 897 dl->name = strdup(name); 898 peerid_Init(&dl->peer); 899 dl->parent = odl->parent; 900 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 901 dl->fsmp.object = dl; 902 903 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) { 904 free(dl->name); 905 free(dl); 906 return NULL; 907 } 908 pap_Init(&dl->pap, dl->physical); 909 dl->pap.cfg = odl->pap.cfg; 910 911 chap_Init(&dl->chap, dl->physical); 912 dl->chap.auth.cfg = odl->chap.auth.cfg; 913 914 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 915 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 916 sizeof dl->physical->link.lcp.cfg); 917 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 918 sizeof dl->physical->link.ccp.cfg); 919 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 920 sizeof dl->physical->async.cfg); 921 922 cbcp_Init(&dl->cbcp, dl->physical); 923 924 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 925 chat_Init(&dl->chat, dl->physical); 926 927 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 928 dl->name, datalink_State(dl)); 929 930 return dl; 931 } 932 933 struct datalink * 934 datalink_Destroy(struct datalink *dl) 935 { 936 struct datalink *result; 937 938 if (dl->state != DATALINK_CLOSED) { 939 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 940 datalink_State(dl)); 941 switch (dl->state) { 942 case DATALINK_HANGUP: 943 case DATALINK_DIAL: 944 case DATALINK_LOGIN: 945 chat_Finish(&dl->chat); /* Gotta blat the timers ! */ 946 break; 947 } 948 } 949 950 chat_Destroy(&dl->chat); 951 timer_Stop(&dl->dial.timer); 952 result = dl->next; 953 physical_Destroy(dl->physical); 954 free(dl->name); 955 free(dl); 956 957 return result; 958 } 959 960 void 961 datalink_Up(struct datalink *dl, int runscripts, int packetmode) 962 { 963 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 964 /* Ignore scripts */ 965 runscripts = 0; 966 967 switch (dl->state) { 968 case DATALINK_CLOSED: 969 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 970 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 971 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 972 datalink_NewState(dl, DATALINK_OPENING); 973 dl->reconnect_tries = 974 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 975 dl->dial.tries = dl->cfg.dial.max; 976 dl->script.run = runscripts; 977 dl->script.packetmode = packetmode; 978 break; 979 980 case DATALINK_OPENING: 981 if (!dl->script.run && runscripts) 982 dl->script.run = 1; 983 /* fall through */ 984 985 case DATALINK_DIAL: 986 case DATALINK_LOGIN: 987 case DATALINK_READY: 988 if (!dl->script.packetmode && packetmode) { 989 dl->script.packetmode = 1; 990 if (dl->state == DATALINK_READY) { 991 dl->script.run = 0; 992 datalink_NewState(dl, DATALINK_CARRIER); 993 } 994 } 995 break; 996 } 997 } 998 999 void 1000 datalink_Close(struct datalink *dl, int how) 1001 { 1002 /* Please close */ 1003 switch (dl->state) { 1004 case DATALINK_OPEN: 1005 peerid_Init(&dl->peer); 1006 fsm2initial(&dl->physical->link.ccp.fsm); 1007 /* fall through */ 1008 1009 case DATALINK_CBCP: 1010 case DATALINK_AUTH: 1011 case DATALINK_LCP: 1012 datalink_AuthReInit(dl); 1013 if (how == CLOSE_LCP) 1014 datalink_DontHangup(dl); 1015 else if (how == CLOSE_STAYDOWN) 1016 datalink_StayDown(dl); 1017 fsm_Close(&dl->physical->link.lcp.fsm); 1018 break; 1019 1020 default: 1021 datalink_ComeDown(dl, how); 1022 } 1023 } 1024 1025 void 1026 datalink_Down(struct datalink *dl, int how) 1027 { 1028 /* Carrier is lost */ 1029 switch (dl->state) { 1030 case DATALINK_OPEN: 1031 peerid_Init(&dl->peer); 1032 fsm2initial(&dl->physical->link.ccp.fsm); 1033 /* fall through */ 1034 1035 case DATALINK_CBCP: 1036 case DATALINK_AUTH: 1037 case DATALINK_LCP: 1038 fsm2initial(&dl->physical->link.lcp.fsm); 1039 if (dl->state == DATALINK_OPENING) 1040 return; /* we're doing a callback... */ 1041 /* fall through */ 1042 1043 default: 1044 datalink_ComeDown(dl, how); 1045 } 1046 } 1047 1048 void 1049 datalink_StayDown(struct datalink *dl) 1050 { 1051 dl->dial.tries = -1; 1052 dl->reconnect_tries = 0; 1053 dl->stayonline = 0; 1054 } 1055 1056 void 1057 datalink_DontHangup(struct datalink *dl) 1058 { 1059 dl->dial.tries = -1; 1060 dl->reconnect_tries = 0; 1061 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0; 1062 } 1063 1064 int 1065 datalink_Show(struct cmdargs const *arg) 1066 { 1067 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 1068 prompt_Printf(arg->prompt, " State: %s\n", 1069 datalink_State(arg->cx)); 1070 prompt_Printf(arg->prompt, " Peer name: "); 1071 if (*arg->cx->peer.authname) 1072 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 1073 else if (arg->cx->state == DATALINK_OPEN) 1074 prompt_Printf(arg->prompt, "None requested\n"); 1075 else 1076 prompt_Printf(arg->prompt, "N/A\n"); 1077 prompt_Printf(arg->prompt, " Discriminator: %s\n", 1078 mp_Enddisc(arg->cx->peer.enddisc.class, 1079 arg->cx->peer.enddisc.address, 1080 arg->cx->peer.enddisc.len)); 1081 1082 prompt_Printf(arg->prompt, "\nDefaults:\n"); 1083 prompt_Printf(arg->prompt, " Phone List: %s\n", 1084 arg->cx->cfg.phone.list); 1085 if (arg->cx->cfg.dial.max) 1086 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 1087 arg->cx->cfg.dial.max); 1088 else 1089 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 1090 if (arg->cx->cfg.dial.next_timeout >= 0) 1091 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 1092 else 1093 prompt_Printf(arg->prompt, "random/"); 1094 if (arg->cx->cfg.dial.timeout >= 0) 1095 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 1096 else 1097 prompt_Printf(arg->prompt, "random\n"); 1098 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 1099 arg->cx->cfg.reconnect.max); 1100 if (arg->cx->cfg.reconnect.timeout > 0) 1101 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 1102 else 1103 prompt_Printf(arg->prompt, "random\n"); 1104 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 1105 PHYS_DIRECT ? "accepted: " : "requested:"); 1106 if (!arg->cx->cfg.callback.opmask) 1107 prompt_Printf(arg->prompt, "none\n"); 1108 else { 1109 int comma = 0; 1110 1111 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 1112 prompt_Printf(arg->prompt, "none"); 1113 comma = 1; 1114 } 1115 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 1116 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 1117 comma = 1; 1118 } 1119 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 1120 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 1121 if (arg->cx->physical->type != PHYS_DIRECT) 1122 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 1123 comma = 1; 1124 } 1125 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 1126 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 1127 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 1128 arg->cx->cfg.cbcp.delay); 1129 prompt_Printf(arg->prompt, " phone: "); 1130 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 1131 if (arg->cx->physical->type & PHYS_DIRECT) 1132 prompt_Printf(arg->prompt, "Caller decides\n"); 1133 else 1134 prompt_Printf(arg->prompt, "Dialback server decides\n"); 1135 } else 1136 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 1137 prompt_Printf(arg->prompt, " timeout: %lds\n", 1138 arg->cx->cfg.cbcp.fsmretry); 1139 } else 1140 prompt_Printf(arg->prompt, "\n"); 1141 } 1142 1143 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1144 arg->cx->cfg.script.dial); 1145 prompt_Printf(arg->prompt, " Login Script: %s\n", 1146 arg->cx->cfg.script.login); 1147 prompt_Printf(arg->prompt, " Logout Script: %s\n", 1148 arg->cx->cfg.script.logout); 1149 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1150 arg->cx->cfg.script.hangup); 1151 return 0; 1152 } 1153 1154 int 1155 datalink_SetReconnect(struct cmdargs const *arg) 1156 { 1157 if (arg->argc == arg->argn+2) { 1158 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1159 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1160 return 0; 1161 } 1162 return -1; 1163 } 1164 1165 int 1166 datalink_SetRedial(struct cmdargs const *arg) 1167 { 1168 const char *sep, *osep; 1169 int timeout, inc, maxinc, tries; 1170 1171 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1172 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1173 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1174 arg->cx->cfg.dial.timeout = -1; 1175 randinit(); 1176 } else { 1177 timeout = atoi(arg->argv[arg->argn]); 1178 1179 if (timeout >= 0) 1180 arg->cx->cfg.dial.timeout = timeout; 1181 else { 1182 log_Printf(LogWARN, "Invalid redial timeout\n"); 1183 return -1; 1184 } 1185 } 1186 1187 sep = strchr(arg->argv[arg->argn], '+'); 1188 if (sep) { 1189 inc = atoi(++sep); 1190 osep = sep; 1191 if (inc >= 0) 1192 arg->cx->cfg.dial.inc = inc; 1193 else { 1194 log_Printf(LogWARN, "Invalid timeout increment\n"); 1195 return -1; 1196 } 1197 sep = strchr(sep, '-'); 1198 if (sep) { 1199 maxinc = atoi(++sep); 1200 if (maxinc >= 0) 1201 arg->cx->cfg.dial.maxinc = maxinc; 1202 else { 1203 log_Printf(LogWARN, "Invalid maximum timeout increments\n"); 1204 return -1; 1205 } 1206 } else { 1207 /* Default timeout increment */ 1208 arg->cx->cfg.dial.maxinc = 10; 1209 sep = osep; 1210 } 1211 } else { 1212 /* Default timeout increment & max increment */ 1213 arg->cx->cfg.dial.inc = 0; 1214 arg->cx->cfg.dial.maxinc = 10; 1215 sep = arg->argv[arg->argn]; 1216 } 1217 1218 sep = strchr(sep, '.'); 1219 if (sep) { 1220 if (strcasecmp(++sep, "random") == 0) { 1221 arg->cx->cfg.dial.next_timeout = -1; 1222 randinit(); 1223 } else { 1224 timeout = atoi(sep); 1225 if (timeout >= 0) 1226 arg->cx->cfg.dial.next_timeout = timeout; 1227 else { 1228 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1229 return -1; 1230 } 1231 } 1232 } else 1233 /* Default next timeout */ 1234 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1235 1236 if (arg->argc == arg->argn+2) { 1237 tries = atoi(arg->argv[arg->argn+1]); 1238 1239 if (tries >= 0) { 1240 arg->cx->cfg.dial.max = tries; 1241 } else { 1242 log_Printf(LogWARN, "Invalid retry value\n"); 1243 return 1; 1244 } 1245 } 1246 return 0; 1247 } 1248 1249 return -1; 1250 } 1251 1252 static const char * const states[] = { 1253 "closed", 1254 "opening", 1255 "hangup", 1256 "dial", 1257 "carrier", 1258 "logout", 1259 "login", 1260 "ready", 1261 "lcp", 1262 "auth", 1263 "cbcp", 1264 "open" 1265 }; 1266 1267 const char * 1268 datalink_State(struct datalink *dl) 1269 { 1270 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1271 return "unknown"; 1272 return states[dl->state]; 1273 } 1274 1275 static void 1276 datalink_NewState(struct datalink *dl, int state) 1277 { 1278 if (state != dl->state) { 1279 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1280 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1281 states[state]); 1282 dl->state = state; 1283 } else 1284 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1285 } 1286 } 1287 1288 struct datalink * 1289 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1290 int fd, int *auxfd, int *nauxfd) 1291 { 1292 struct datalink *dl, *cdl; 1293 struct fsm_retry copy; 1294 char *oname; 1295 1296 dl = (struct datalink *)iov[(*niov)++].iov_base; 1297 dl->name = iov[*niov].iov_base; 1298 1299 if (dl->name[DATALINK_MAXNAME-1]) { 1300 dl->name[DATALINK_MAXNAME-1] = '\0'; 1301 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1302 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1303 } 1304 1305 /* Make sure the name is unique ! */ 1306 oname = NULL; 1307 do { 1308 for (cdl = bundle->links; cdl; cdl = cdl->next) 1309 if (!strcasecmp(dl->name, cdl->name)) { 1310 if (oname) 1311 free(datalink_NextName(dl)); 1312 else 1313 oname = datalink_NextName(dl); 1314 break; /* Keep renaming 'till we have no conflicts */ 1315 } 1316 } while (cdl); 1317 1318 if (oname) { 1319 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1320 free(oname); 1321 } else { 1322 dl->name = strdup(dl->name); 1323 free(iov[*niov].iov_base); 1324 } 1325 (*niov)++; 1326 1327 dl->desc.type = DATALINK_DESCRIPTOR; 1328 dl->desc.UpdateSet = datalink_UpdateSet; 1329 dl->desc.IsSet = datalink_IsSet; 1330 dl->desc.Read = datalink_Read; 1331 dl->desc.Write = datalink_Write; 1332 1333 mp_linkInit(&dl->mp); 1334 *dl->phone.list = '\0'; 1335 dl->phone.next = NULL; 1336 dl->phone.alt = NULL; 1337 dl->phone.chosen = "N/A"; 1338 1339 dl->bundle = bundle; 1340 dl->next = NULL; 1341 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 1342 dl->dial.tries = 0; 1343 dl->reconnect_tries = 0; 1344 dl->parent = &bundle->fsm; 1345 dl->fsmp.LayerStart = datalink_LayerStart; 1346 dl->fsmp.LayerUp = datalink_LayerUp; 1347 dl->fsmp.LayerDown = datalink_LayerDown; 1348 dl->fsmp.LayerFinish = datalink_LayerFinish; 1349 dl->fsmp.object = dl; 1350 1351 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd); 1352 1353 if (!dl->physical) { 1354 free(dl->name); 1355 free(dl); 1356 dl = NULL; 1357 } else { 1358 copy = dl->pap.cfg.fsm; 1359 pap_Init(&dl->pap, dl->physical); 1360 dl->pap.cfg.fsm = copy; 1361 1362 copy = dl->chap.auth.cfg.fsm; 1363 chap_Init(&dl->chap, dl->physical); 1364 dl->chap.auth.cfg.fsm = copy; 1365 1366 cbcp_Init(&dl->cbcp, dl->physical); 1367 1368 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 1369 chat_Init(&dl->chat, dl->physical); 1370 1371 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1372 dl->name, datalink_State(dl)); 1373 } 1374 1375 return dl; 1376 } 1377 1378 int 1379 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1380 int *auxfd, int *nauxfd) 1381 { 1382 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1383 int link_fd; 1384 1385 if (dl) { 1386 timer_Stop(&dl->dial.timer); 1387 /* The following is purely for the sake of paranoia */ 1388 cbcp_Down(&dl->cbcp); 1389 timer_Stop(&dl->pap.authtimer); 1390 timer_Stop(&dl->chap.auth.authtimer); 1391 } 1392 1393 if (*niov >= maxiov - 1) { 1394 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1395 if (dl) { 1396 free(dl->name); 1397 free(dl); 1398 } 1399 return -1; 1400 } 1401 1402 iov[*niov].iov_base = (void *)dl; 1403 iov[(*niov)++].iov_len = sizeof *dl; 1404 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL; 1405 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1406 1407 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd, 1408 nauxfd); 1409 1410 if (link_fd == -1 && dl) { 1411 free(dl->name); 1412 free(dl); 1413 } 1414 1415 return link_fd; 1416 } 1417 1418 void 1419 datalink_Rename(struct datalink *dl, const char *name) 1420 { 1421 free(dl->name); 1422 dl->physical->link.name = dl->name = strdup(name); 1423 } 1424 1425 char * 1426 datalink_NextName(struct datalink *dl) 1427 { 1428 int f, n; 1429 char *name, *oname; 1430 1431 n = strlen(dl->name); 1432 name = (char *)malloc(n+3); 1433 for (f = n - 1; f >= 0; f--) 1434 if (!isdigit(dl->name[f])) 1435 break; 1436 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1437 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1438 oname = dl->name; 1439 dl->name = name; 1440 /* our physical link name isn't updated (it probably isn't created yet) */ 1441 return oname; 1442 } 1443 1444 int 1445 datalink_SetMode(struct datalink *dl, int mode) 1446 { 1447 if (!physical_SetMode(dl->physical, mode)) 1448 return 0; 1449 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1450 dl->script.run = 0; 1451 if (dl->physical->type == PHYS_DIRECT) 1452 dl->reconnect_tries = 0; 1453 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) && 1454 dl->state <= DATALINK_READY) 1455 datalink_Up(dl, 1, 1); 1456 return 1; 1457 } 1458 1459 int 1460 datalink_GetDialTimeout(struct datalink *dl) 1461 { 1462 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc; 1463 1464 if (dl->dial.incs < dl->cfg.dial.maxinc) 1465 dl->dial.incs++; 1466 1467 return result; 1468 } 1469