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 <stdarg.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <sys/uio.h> 42 #include <termios.h> 43 44 #include "layer.h" 45 #include "mbuf.h" 46 #include "log.h" 47 #include "defs.h" 48 #include "timer.h" 49 #include "fsm.h" 50 #include "descriptor.h" 51 #include "lqr.h" 52 #include "hdlc.h" 53 #include "lcp.h" 54 #include "async.h" 55 #include "throughput.h" 56 #include "ccp.h" 57 #include "link.h" 58 #include "physical.h" 59 #include "iplist.h" 60 #include "slcompress.h" 61 #include "ncpaddr.h" 62 #include "ipcp.h" 63 #include "filter.h" 64 #include "mp.h" 65 #ifndef NORADIUS 66 #include "radius.h" 67 #endif 68 #include "ipv6cp.h" 69 #include "ncp.h" 70 #include "bundle.h" 71 #include "chat.h" 72 #include "auth.h" 73 #include "prompt.h" 74 #include "proto.h" 75 #include "pap.h" 76 #include "chap.h" 77 #include "command.h" 78 #include "cbcp.h" 79 #include "datalink.h" 80 81 static void datalink_LoginDone(struct datalink *); 82 static void datalink_NewState(struct datalink *, int); 83 84 static void 85 datalink_OpenTimeout(void *v) 86 { 87 struct datalink *dl = (struct datalink *)v; 88 89 timer_Stop(&dl->dial.timer); 90 if (dl->state == DATALINK_OPENING) 91 log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name); 92 } 93 94 static int 95 datalink_StartDialTimer(struct datalink *dl, int Timeout) 96 { 97 int result = Timeout; 98 99 timer_Stop(&dl->dial.timer); 100 if (Timeout < 0) 101 result = (random() % DIAL_TIMEOUT) + 1; 102 dl->dial.timer.load = result ? result * SECTICKS : 1; 103 dl->dial.timer.func = datalink_OpenTimeout; 104 dl->dial.timer.name = "dial"; 105 dl->dial.timer.arg = dl; 106 timer_Start(&dl->dial.timer); 107 if (dl->state == DATALINK_OPENING) 108 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n", 109 dl->name, result); 110 return result; 111 } 112 113 static void 114 datalink_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 } 186 187 const char * 188 datalink_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 } 208 209 static void 210 datalink_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_Setup(&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 } 248 249 static int 250 datalink_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 /* FALLTHROUGH */ 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 } 412 413 int 414 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 415 { 416 return physical_RemoveFromSet(dl->physical, r, w, e); 417 } 418 419 static int 420 datalink_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 } 445 446 static void 447 datalink_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 } 475 476 static int 477 datalink_Write(struct fdescriptor *d, struct bundle *bundle, 478 const fd_set *fdset) 479 { 480 struct datalink *dl = descriptor2datalink(d); 481 int result = 0; 482 483 switch (dl->state) { 484 case DATALINK_CLOSED: 485 case DATALINK_OPENING: 486 break; 487 488 case DATALINK_HANGUP: 489 case DATALINK_DIAL: 490 case DATALINK_LOGOUT: 491 case DATALINK_LOGIN: 492 if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) { 493 datalink_ComeDown(dl, CLOSE_NORMAL); 494 result = 0; 495 } 496 break; 497 498 case DATALINK_READY: 499 case DATALINK_LCP: 500 case DATALINK_AUTH: 501 case DATALINK_CBCP: 502 case DATALINK_OPEN: 503 if (descriptor_IsSet(&dl->chap.desc, fdset)) 504 switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) { 505 case -1: 506 datalink_ComeDown(dl, CLOSE_NORMAL); 507 break; 508 case 1: 509 result++; 510 } 511 if (descriptor_IsSet(&dl->physical->desc, fdset)) 512 switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) { 513 case -1: 514 datalink_ComeDown(dl, CLOSE_NORMAL); 515 break; 516 case 1: 517 result++; 518 } 519 break; 520 } 521 522 return result; 523 } 524 525 void 526 datalink_ComeDown(struct datalink *dl, int how) 527 { 528 int stayonline; 529 530 if (how == CLOSE_LCP) 531 datalink_DontHangup(dl); 532 else if (how == CLOSE_STAYDOWN) 533 datalink_StayDown(dl); 534 535 stayonline = dl->stayonline; 536 dl->stayonline = 0; 537 538 if (dl->state >= DATALINK_READY && stayonline) { 539 physical_StopDeviceTimer(dl->physical); 540 datalink_NewState(dl, DATALINK_READY); 541 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 542 physical_Offline(dl->physical); 543 if (dl->script.run && dl->state != DATALINK_OPENING) { 544 if (dl->state == DATALINK_LOGOUT) { 545 datalink_NewState(dl, DATALINK_HANGUP); 546 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 547 log_Printf(LogWARN, "Invalid hangup script\n"); 548 } else { 549 datalink_NewState(dl, DATALINK_LOGOUT); 550 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 551 log_Printf(LogWARN, "Invalid logout script\n"); 552 } 553 } else 554 datalink_HangupDone(dl); 555 } 556 } 557 558 static void 559 datalink_LayerStart(void *v, struct fsm *fp) 560 { 561 /* The given FSM is about to start up ! */ 562 struct datalink *dl = (struct datalink *)v; 563 564 if (fp->proto == PROTO_LCP) 565 (*dl->parent->LayerStart)(dl->parent->object, fp); 566 } 567 568 static void 569 datalink_LayerUp(void *v, struct fsm *fp) 570 { 571 /* The given fsm is now up */ 572 struct datalink *dl = (struct datalink *)v; 573 struct lcp *lcp = &dl->physical->link.lcp; 574 575 if (fp->proto == PROTO_LCP) { 576 datalink_GotAuthname(dl, ""); 577 lcp->auth_ineed = lcp->want_auth; 578 lcp->auth_iwait = lcp->his_auth; 579 if (lcp->his_auth || lcp->want_auth) { 580 if (bundle_Phase(dl->bundle) != PHASE_NETWORK) 581 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 582 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 583 Auth2Nam(lcp->his_auth, lcp->his_authtype), 584 Auth2Nam(lcp->want_auth, lcp->want_authtype)); 585 if (lcp->his_auth == PROTO_PAP) 586 auth_StartReq(&dl->pap); 587 if (lcp->want_auth == PROTO_CHAP) 588 auth_StartReq(&dl->chap.auth); 589 } else 590 datalink_AuthOk(dl); 591 } else if (fp->proto == PROTO_CCP) 592 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm); 593 } 594 595 static void 596 datalink_AuthReInit(struct datalink *dl) 597 { 598 auth_StopTimer(&dl->pap); 599 auth_StopTimer(&dl->chap.auth); 600 chap_ReInit(&dl->chap); 601 } 602 603 void 604 datalink_GotAuthname(struct datalink *dl, const char *name) 605 { 606 strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1); 607 dl->peer.authname[sizeof dl->peer.authname - 1] = '\0'; 608 } 609 610 void 611 datalink_NCPUp(struct datalink *dl) 612 { 613 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp); 614 615 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 616 /* we've authenticated in multilink mode ! */ 617 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 618 case MP_LINKSENT: 619 /* We've handed the link off to another ppp (well, we will soon) ! */ 620 return; 621 case MP_UP: 622 /* First link in the bundle */ 623 auth_Select(dl->bundle, dl->peer.authname); 624 bundle_CalculateBandwidth(dl->bundle); 625 /* FALLTHROUGH */ 626 case MP_ADDED: 627 /* We're in multilink mode ! */ 628 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 629 bundle_CalculateBandwidth(dl->bundle); 630 break; 631 case MP_FAILED: 632 datalink_AuthNotOk(dl); 633 return; 634 } 635 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 636 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 637 datalink_NewState(dl, DATALINK_OPEN); 638 bundle_CalculateBandwidth(dl->bundle); 639 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 640 return; 641 } else { 642 dl->bundle->ncp.mp.peer = dl->peer; 643 ncp_SetLink(&dl->bundle->ncp, &dl->physical->link); 644 auth_Select(dl->bundle, dl->peer.authname); 645 } 646 647 if (ccpok) { 648 fsm_Up(&dl->physical->link.ccp.fsm); 649 fsm_Open(&dl->physical->link.ccp.fsm); 650 } 651 datalink_NewState(dl, DATALINK_OPEN); 652 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 653 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 654 } 655 656 void 657 datalink_CBCPComplete(struct datalink *dl) 658 { 659 datalink_NewState(dl, DATALINK_LCP); 660 datalink_AuthReInit(dl); 661 fsm_Close(&dl->physical->link.lcp.fsm); 662 } 663 664 void 665 datalink_CBCPFailed(struct datalink *dl) 666 { 667 cbcp_Down(&dl->cbcp); 668 datalink_CBCPComplete(dl); 669 } 670 671 void 672 datalink_AuthOk(struct datalink *dl) 673 { 674 if ((dl->physical->link.lcp.his_callback.opmask & 675 CALLBACK_BIT(CALLBACK_CBCP) || 676 dl->physical->link.lcp.want_callback.opmask & 677 CALLBACK_BIT(CALLBACK_CBCP)) && 678 !(dl->physical->link.lcp.want_callback.opmask & 679 CALLBACK_BIT(CALLBACK_AUTH))) { 680 /* We must have agreed CBCP if AUTH isn't there any more */ 681 datalink_NewState(dl, DATALINK_CBCP); 682 cbcp_Up(&dl->cbcp); 683 } else if (dl->physical->link.lcp.want_callback.opmask) { 684 /* It's not CBCP */ 685 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name); 686 datalink_NewState(dl, DATALINK_LCP); 687 datalink_AuthReInit(dl); 688 fsm_Close(&dl->physical->link.lcp.fsm); 689 } else 690 switch (dl->physical->link.lcp.his_callback.opmask) { 691 case 0: 692 datalink_NCPUp(dl); 693 break; 694 695 case CALLBACK_BIT(CALLBACK_AUTH): 696 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone, 697 sizeof dl->cbcp.fsm.phone); 698 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) { 699 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name, 700 dl->peer.authname); 701 *dl->cbcp.fsm.phone = '\0'; 702 } else { 703 char *ptr = strchr(dl->cbcp.fsm.phone, ','); 704 if (ptr) 705 *ptr = '\0'; /* Call back on the first number */ 706 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 707 dl->cbcp.fsm.phone); 708 dl->cbcp.required = 1; 709 } 710 dl->cbcp.fsm.delay = 0; 711 datalink_NewState(dl, DATALINK_LCP); 712 datalink_AuthReInit(dl); 713 fsm_Close(&dl->physical->link.lcp.fsm); 714 break; 715 716 case CALLBACK_BIT(CALLBACK_E164): 717 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg, 718 sizeof dl->cbcp.fsm.phone - 1); 719 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0'; 720 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 721 dl->cbcp.fsm.phone); 722 dl->cbcp.required = 1; 723 dl->cbcp.fsm.delay = 0; 724 datalink_NewState(dl, DATALINK_LCP); 725 datalink_AuthReInit(dl); 726 fsm_Close(&dl->physical->link.lcp.fsm); 727 break; 728 729 default: 730 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n", 731 dl->name); 732 datalink_NewState(dl, DATALINK_LCP); 733 datalink_AuthReInit(dl); 734 fsm_Close(&dl->physical->link.lcp.fsm); 735 break; 736 } 737 } 738 739 void 740 datalink_AuthNotOk(struct datalink *dl) 741 { 742 datalink_NewState(dl, DATALINK_LCP); 743 datalink_AuthReInit(dl); 744 fsm_Close(&dl->physical->link.lcp.fsm); 745 } 746 747 static void 748 datalink_LayerDown(void *v, struct fsm *fp) 749 { 750 /* The given FSM has been told to come down */ 751 struct datalink *dl = (struct datalink *)v; 752 753 if (fp->proto == PROTO_LCP) { 754 switch (dl->state) { 755 case DATALINK_OPEN: 756 peerid_Init(&dl->peer); 757 fsm2initial(&dl->physical->link.ccp.fsm); 758 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */ 759 (*dl->parent->LayerDown)(dl->parent->object, fp); 760 /* FALLTHROUGH (just in case) */ 761 762 case DATALINK_CBCP: 763 if (!dl->cbcp.required) 764 cbcp_Down(&dl->cbcp); 765 /* FALLTHROUGH (just in case) */ 766 767 case DATALINK_AUTH: 768 timer_Stop(&dl->pap.authtimer); 769 timer_Stop(&dl->chap.auth.authtimer); 770 } 771 datalink_NewState(dl, DATALINK_LCP); 772 datalink_AuthReInit(dl); 773 } 774 } 775 776 static void 777 datalink_LayerFinish(void *v, struct fsm *fp) 778 { 779 /* The given fsm is now down */ 780 struct datalink *dl = (struct datalink *)v; 781 782 if (fp->proto == PROTO_LCP) { 783 fsm2initial(fp); 784 (*dl->parent->LayerFinish)(dl->parent->object, fp); 785 datalink_ComeDown(dl, CLOSE_NORMAL); 786 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 787 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 788 } 789 790 struct datalink * 791 datalink_Create(const char *name, struct bundle *bundle, int type) 792 { 793 struct datalink *dl; 794 795 dl = (struct datalink *)malloc(sizeof(struct datalink)); 796 if (dl == NULL) 797 return dl; 798 799 dl->desc.type = DATALINK_DESCRIPTOR; 800 dl->desc.UpdateSet = datalink_UpdateSet; 801 dl->desc.IsSet = datalink_IsSet; 802 dl->desc.Read = datalink_Read; 803 dl->desc.Write = datalink_Write; 804 805 dl->state = DATALINK_CLOSED; 806 807 *dl->cfg.script.dial = '\0'; 808 *dl->cfg.script.login = '\0'; 809 *dl->cfg.script.logout = '\0'; 810 *dl->cfg.script.hangup = '\0'; 811 *dl->cfg.phone.list = '\0'; 812 *dl->phone.list = '\0'; 813 dl->phone.next = NULL; 814 dl->phone.alt = NULL; 815 dl->phone.chosen = "N/A"; 816 dl->stayonline = 0; 817 dl->script.run = 1; 818 dl->script.packetmode = 1; 819 mp_linkInit(&dl->mp); 820 821 dl->bundle = bundle; 822 dl->next = NULL; 823 824 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 825 826 dl->dial.tries = 0; 827 dl->cfg.dial.max = 1; 828 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 829 dl->cfg.dial.timeout = DIAL_TIMEOUT; 830 dl->cfg.dial.inc = 0; 831 dl->cfg.dial.maxinc = 10; 832 833 dl->reconnect_tries = 0; 834 dl->cfg.reconnect.max = 0; 835 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 836 837 dl->cfg.callback.opmask = 0; 838 dl->cfg.cbcp.delay = 0; 839 *dl->cfg.cbcp.phone = '\0'; 840 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY; 841 842 dl->name = strdup(name); 843 peerid_Init(&dl->peer); 844 dl->parent = &bundle->fsm; 845 dl->fsmp.LayerStart = datalink_LayerStart; 846 dl->fsmp.LayerUp = datalink_LayerUp; 847 dl->fsmp.LayerDown = datalink_LayerDown; 848 dl->fsmp.LayerFinish = datalink_LayerFinish; 849 dl->fsmp.object = dl; 850 851 if ((dl->physical = physical_Create(dl, type)) == NULL) { 852 free(dl->name); 853 free(dl); 854 return NULL; 855 } 856 857 pap_Init(&dl->pap, dl->physical); 858 chap_Init(&dl->chap, dl->physical); 859 cbcp_Init(&dl->cbcp, dl->physical); 860 861 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 862 chat_Init(&dl->chat, dl->physical); 863 864 log_Printf(LogPHASE, "%s: Created in %s state\n", 865 dl->name, datalink_State(dl)); 866 867 return dl; 868 } 869 870 struct datalink * 871 datalink_Clone(struct datalink *odl, const char *name) 872 { 873 struct datalink *dl; 874 875 dl = (struct datalink *)malloc(sizeof(struct datalink)); 876 if (dl == NULL) 877 return dl; 878 879 dl->desc.type = DATALINK_DESCRIPTOR; 880 dl->desc.UpdateSet = datalink_UpdateSet; 881 dl->desc.IsSet = datalink_IsSet; 882 dl->desc.Read = datalink_Read; 883 dl->desc.Write = datalink_Write; 884 885 dl->state = DATALINK_CLOSED; 886 887 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 888 mp_linkInit(&dl->mp); 889 *dl->phone.list = '\0'; 890 dl->phone.next = NULL; 891 dl->phone.alt = NULL; 892 dl->phone.chosen = "N/A"; 893 dl->bundle = odl->bundle; 894 dl->next = NULL; 895 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 896 dl->dial.tries = 0; 897 dl->reconnect_tries = 0; 898 dl->name = strdup(name); 899 peerid_Init(&dl->peer); 900 dl->parent = odl->parent; 901 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 902 dl->fsmp.object = dl; 903 904 if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) { 905 free(dl->name); 906 free(dl); 907 return NULL; 908 } 909 pap_Init(&dl->pap, dl->physical); 910 dl->pap.cfg = odl->pap.cfg; 911 912 chap_Init(&dl->chap, dl->physical); 913 dl->chap.auth.cfg = odl->chap.auth.cfg; 914 915 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 916 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 917 sizeof dl->physical->link.lcp.cfg); 918 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 919 sizeof dl->physical->link.ccp.cfg); 920 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 921 sizeof dl->physical->async.cfg); 922 923 cbcp_Init(&dl->cbcp, dl->physical); 924 925 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 926 chat_Init(&dl->chat, dl->physical); 927 928 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 929 dl->name, datalink_State(dl)); 930 931 return dl; 932 } 933 934 struct datalink * 935 datalink_Destroy(struct datalink *dl) 936 { 937 struct datalink *result; 938 939 if (dl->state != DATALINK_CLOSED) { 940 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 941 datalink_State(dl)); 942 switch (dl->state) { 943 case DATALINK_HANGUP: 944 case DATALINK_DIAL: 945 case DATALINK_LOGIN: 946 chat_Finish(&dl->chat); /* Gotta blat the timers ! */ 947 break; 948 } 949 } 950 951 chat_Destroy(&dl->chat); 952 timer_Stop(&dl->dial.timer); 953 result = dl->next; 954 physical_Destroy(dl->physical); 955 free(dl->name); 956 free(dl); 957 958 return result; 959 } 960 961 void 962 datalink_Up(struct datalink *dl, int runscripts, int packetmode) 963 { 964 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 965 /* Ignore scripts */ 966 runscripts = 0; 967 968 switch (dl->state) { 969 case DATALINK_CLOSED: 970 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 971 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 972 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 973 datalink_NewState(dl, DATALINK_OPENING); 974 dl->reconnect_tries = 975 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 976 dl->dial.tries = dl->cfg.dial.max; 977 dl->script.run = runscripts; 978 dl->script.packetmode = packetmode; 979 break; 980 981 case DATALINK_OPENING: 982 if (!dl->script.run && runscripts) 983 dl->script.run = 1; 984 /* FALLTHROUGH */ 985 986 case DATALINK_DIAL: 987 case DATALINK_LOGIN: 988 case DATALINK_READY: 989 if (!dl->script.packetmode && packetmode) { 990 dl->script.packetmode = 1; 991 if (dl->state == DATALINK_READY) { 992 dl->script.run = 0; 993 datalink_NewState(dl, DATALINK_CARRIER); 994 } 995 } 996 break; 997 } 998 } 999 1000 void 1001 datalink_Close(struct datalink *dl, int how) 1002 { 1003 /* Please close */ 1004 switch (dl->state) { 1005 case DATALINK_OPEN: 1006 peerid_Init(&dl->peer); 1007 fsm2initial(&dl->physical->link.ccp.fsm); 1008 /* FALLTHROUGH */ 1009 1010 case DATALINK_CBCP: 1011 case DATALINK_AUTH: 1012 case DATALINK_LCP: 1013 datalink_AuthReInit(dl); 1014 if (how == CLOSE_LCP) 1015 datalink_DontHangup(dl); 1016 else if (how == CLOSE_STAYDOWN) 1017 datalink_StayDown(dl); 1018 fsm_Close(&dl->physical->link.lcp.fsm); 1019 break; 1020 1021 default: 1022 datalink_ComeDown(dl, how); 1023 } 1024 } 1025 1026 void 1027 datalink_Down(struct datalink *dl, int how) 1028 { 1029 /* Carrier is lost */ 1030 switch (dl->state) { 1031 case DATALINK_OPEN: 1032 peerid_Init(&dl->peer); 1033 fsm2initial(&dl->physical->link.ccp.fsm); 1034 /* FALLTHROUGH */ 1035 1036 case DATALINK_CBCP: 1037 case DATALINK_AUTH: 1038 case DATALINK_LCP: 1039 fsm2initial(&dl->physical->link.lcp.fsm); 1040 if (dl->state == DATALINK_OPENING) 1041 return; /* we're doing a callback... */ 1042 /* FALLTHROUGH */ 1043 1044 default: 1045 datalink_ComeDown(dl, how); 1046 } 1047 } 1048 1049 void 1050 datalink_StayDown(struct datalink *dl) 1051 { 1052 dl->dial.tries = -1; 1053 dl->reconnect_tries = 0; 1054 dl->stayonline = 0; 1055 } 1056 1057 void 1058 datalink_DontHangup(struct datalink *dl) 1059 { 1060 dl->dial.tries = -1; 1061 dl->reconnect_tries = 0; 1062 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0; 1063 } 1064 1065 int 1066 datalink_Show(struct cmdargs const *arg) 1067 { 1068 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 1069 prompt_Printf(arg->prompt, " State: %s\n", 1070 datalink_State(arg->cx)); 1071 prompt_Printf(arg->prompt, " Peer name: "); 1072 if (*arg->cx->peer.authname) 1073 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 1074 else if (arg->cx->state == DATALINK_OPEN) 1075 prompt_Printf(arg->prompt, "None requested\n"); 1076 else 1077 prompt_Printf(arg->prompt, "N/A\n"); 1078 prompt_Printf(arg->prompt, " Discriminator: %s\n", 1079 mp_Enddisc(arg->cx->peer.enddisc.class, 1080 arg->cx->peer.enddisc.address, 1081 arg->cx->peer.enddisc.len)); 1082 1083 prompt_Printf(arg->prompt, "\nDefaults:\n"); 1084 prompt_Printf(arg->prompt, " Phone List: %s\n", 1085 arg->cx->cfg.phone.list); 1086 if (arg->cx->cfg.dial.max) 1087 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 1088 arg->cx->cfg.dial.max); 1089 else 1090 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 1091 if (arg->cx->cfg.dial.next_timeout >= 0) 1092 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 1093 else 1094 prompt_Printf(arg->prompt, "random/"); 1095 if (arg->cx->cfg.dial.timeout >= 0) 1096 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 1097 else 1098 prompt_Printf(arg->prompt, "random\n"); 1099 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 1100 arg->cx->cfg.reconnect.max); 1101 if (arg->cx->cfg.reconnect.timeout > 0) 1102 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 1103 else 1104 prompt_Printf(arg->prompt, "random\n"); 1105 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 1106 PHYS_DIRECT ? "accepted: " : "requested:"); 1107 if (!arg->cx->cfg.callback.opmask) 1108 prompt_Printf(arg->prompt, "none\n"); 1109 else { 1110 int comma = 0; 1111 1112 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 1113 prompt_Printf(arg->prompt, "none"); 1114 comma = 1; 1115 } 1116 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 1117 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 1118 comma = 1; 1119 } 1120 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 1121 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 1122 if (arg->cx->physical->type != PHYS_DIRECT) 1123 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 1124 comma = 1; 1125 } 1126 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 1127 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 1128 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 1129 arg->cx->cfg.cbcp.delay); 1130 prompt_Printf(arg->prompt, " phone: "); 1131 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 1132 if (arg->cx->physical->type & PHYS_DIRECT) 1133 prompt_Printf(arg->prompt, "Caller decides\n"); 1134 else 1135 prompt_Printf(arg->prompt, "Dialback server decides\n"); 1136 } else 1137 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 1138 prompt_Printf(arg->prompt, " timeout: %lds\n", 1139 arg->cx->cfg.cbcp.fsmretry); 1140 } else 1141 prompt_Printf(arg->prompt, "\n"); 1142 } 1143 1144 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1145 arg->cx->cfg.script.dial); 1146 prompt_Printf(arg->prompt, " Login Script: %s\n", 1147 arg->cx->cfg.script.login); 1148 prompt_Printf(arg->prompt, " Logout Script: %s\n", 1149 arg->cx->cfg.script.logout); 1150 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1151 arg->cx->cfg.script.hangup); 1152 return 0; 1153 } 1154 1155 int 1156 datalink_SetReconnect(struct cmdargs const *arg) 1157 { 1158 if (arg->argc == arg->argn+2) { 1159 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1160 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1161 return 0; 1162 } 1163 return -1; 1164 } 1165 1166 int 1167 datalink_SetRedial(struct cmdargs const *arg) 1168 { 1169 const char *sep, *osep; 1170 int timeout, inc, maxinc, tries; 1171 1172 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1173 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1174 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1175 arg->cx->cfg.dial.timeout = -1; 1176 randinit(); 1177 } else { 1178 timeout = atoi(arg->argv[arg->argn]); 1179 1180 if (timeout >= 0) 1181 arg->cx->cfg.dial.timeout = timeout; 1182 else { 1183 log_Printf(LogWARN, "Invalid redial timeout\n"); 1184 return -1; 1185 } 1186 } 1187 1188 sep = strchr(arg->argv[arg->argn], '+'); 1189 if (sep) { 1190 inc = atoi(++sep); 1191 osep = sep; 1192 if (inc >= 0) 1193 arg->cx->cfg.dial.inc = inc; 1194 else { 1195 log_Printf(LogWARN, "Invalid timeout increment\n"); 1196 return -1; 1197 } 1198 sep = strchr(sep, '-'); 1199 if (sep) { 1200 maxinc = atoi(++sep); 1201 if (maxinc >= 0) 1202 arg->cx->cfg.dial.maxinc = maxinc; 1203 else { 1204 log_Printf(LogWARN, "Invalid maximum timeout increments\n"); 1205 return -1; 1206 } 1207 } else { 1208 /* Default timeout increment */ 1209 arg->cx->cfg.dial.maxinc = 10; 1210 sep = osep; 1211 } 1212 } else { 1213 /* Default timeout increment & max increment */ 1214 arg->cx->cfg.dial.inc = 0; 1215 arg->cx->cfg.dial.maxinc = 10; 1216 sep = arg->argv[arg->argn]; 1217 } 1218 1219 sep = strchr(sep, '.'); 1220 if (sep) { 1221 if (strcasecmp(++sep, "random") == 0) { 1222 arg->cx->cfg.dial.next_timeout = -1; 1223 randinit(); 1224 } else { 1225 timeout = atoi(sep); 1226 if (timeout >= 0) 1227 arg->cx->cfg.dial.next_timeout = timeout; 1228 else { 1229 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1230 return -1; 1231 } 1232 } 1233 } else 1234 /* Default next timeout */ 1235 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1236 1237 if (arg->argc == arg->argn+2) { 1238 tries = atoi(arg->argv[arg->argn+1]); 1239 1240 if (tries >= 0) { 1241 arg->cx->cfg.dial.max = tries; 1242 } else { 1243 log_Printf(LogWARN, "Invalid retry value\n"); 1244 return 1; 1245 } 1246 } 1247 return 0; 1248 } 1249 1250 return -1; 1251 } 1252 1253 static const char * const states[] = { 1254 "closed", 1255 "opening", 1256 "hangup", 1257 "dial", 1258 "carrier", 1259 "logout", 1260 "login", 1261 "ready", 1262 "lcp", 1263 "auth", 1264 "cbcp", 1265 "open" 1266 }; 1267 1268 const char * 1269 datalink_State(struct datalink *dl) 1270 { 1271 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1272 return "unknown"; 1273 return states[dl->state]; 1274 } 1275 1276 static void 1277 datalink_NewState(struct datalink *dl, int state) 1278 { 1279 if (state != dl->state) { 1280 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1281 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1282 states[state]); 1283 dl->state = state; 1284 } else 1285 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1286 } 1287 } 1288 1289 struct datalink * 1290 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1291 int fd, int *auxfd, int *nauxfd) 1292 { 1293 struct datalink *dl, *cdl; 1294 struct fsm_retry copy; 1295 char *oname; 1296 1297 dl = (struct datalink *)iov[(*niov)++].iov_base; 1298 dl->name = iov[*niov].iov_base; 1299 1300 if (dl->name[DATALINK_MAXNAME-1]) { 1301 dl->name[DATALINK_MAXNAME-1] = '\0'; 1302 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1303 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1304 } 1305 1306 /* Make sure the name is unique ! */ 1307 oname = NULL; 1308 do { 1309 for (cdl = bundle->links; cdl; cdl = cdl->next) 1310 if (!strcasecmp(dl->name, cdl->name)) { 1311 if (oname) 1312 free(datalink_NextName(dl)); 1313 else 1314 oname = datalink_NextName(dl); 1315 break; /* Keep renaming 'till we have no conflicts */ 1316 } 1317 } while (cdl); 1318 1319 if (oname) { 1320 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1321 free(oname); 1322 } else { 1323 dl->name = strdup(dl->name); 1324 free(iov[*niov].iov_base); 1325 } 1326 (*niov)++; 1327 1328 dl->desc.type = DATALINK_DESCRIPTOR; 1329 dl->desc.UpdateSet = datalink_UpdateSet; 1330 dl->desc.IsSet = datalink_IsSet; 1331 dl->desc.Read = datalink_Read; 1332 dl->desc.Write = datalink_Write; 1333 1334 mp_linkInit(&dl->mp); 1335 *dl->phone.list = '\0'; 1336 dl->phone.next = NULL; 1337 dl->phone.alt = NULL; 1338 dl->phone.chosen = "N/A"; 1339 1340 dl->bundle = bundle; 1341 dl->next = NULL; 1342 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 1343 dl->dial.tries = 0; 1344 dl->reconnect_tries = 0; 1345 dl->parent = &bundle->fsm; 1346 dl->fsmp.LayerStart = datalink_LayerStart; 1347 dl->fsmp.LayerUp = datalink_LayerUp; 1348 dl->fsmp.LayerDown = datalink_LayerDown; 1349 dl->fsmp.LayerFinish = datalink_LayerFinish; 1350 dl->fsmp.object = dl; 1351 1352 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd); 1353 1354 if (!dl->physical) { 1355 free(dl->name); 1356 free(dl); 1357 dl = NULL; 1358 } else { 1359 copy = dl->pap.cfg.fsm; 1360 pap_Init(&dl->pap, dl->physical); 1361 dl->pap.cfg.fsm = copy; 1362 1363 copy = dl->chap.auth.cfg.fsm; 1364 chap_Init(&dl->chap, dl->physical); 1365 dl->chap.auth.cfg.fsm = copy; 1366 1367 cbcp_Init(&dl->cbcp, dl->physical); 1368 1369 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 1370 chat_Init(&dl->chat, dl->physical); 1371 1372 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1373 dl->name, datalink_State(dl)); 1374 } 1375 1376 return dl; 1377 } 1378 1379 int 1380 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1381 int *auxfd, int *nauxfd) 1382 { 1383 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1384 int link_fd; 1385 1386 if (dl) { 1387 timer_Stop(&dl->dial.timer); 1388 /* The following is purely for the sake of paranoia */ 1389 cbcp_Down(&dl->cbcp); 1390 timer_Stop(&dl->pap.authtimer); 1391 timer_Stop(&dl->chap.auth.authtimer); 1392 } 1393 1394 if (*niov >= maxiov - 1) { 1395 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1396 if (dl) { 1397 free(dl->name); 1398 free(dl); 1399 } 1400 return -1; 1401 } 1402 1403 iov[*niov].iov_base = (void *)dl; 1404 iov[(*niov)++].iov_len = sizeof *dl; 1405 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL; 1406 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1407 1408 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd, 1409 nauxfd); 1410 1411 if (link_fd == -1 && dl) { 1412 free(dl->name); 1413 free(dl); 1414 } 1415 1416 return link_fd; 1417 } 1418 1419 void 1420 datalink_Rename(struct datalink *dl, const char *name) 1421 { 1422 free(dl->name); 1423 dl->physical->link.name = dl->name = strdup(name); 1424 } 1425 1426 char * 1427 datalink_NextName(struct datalink *dl) 1428 { 1429 int f, n; 1430 char *name, *oname; 1431 1432 n = strlen(dl->name); 1433 name = (char *)malloc(n+3); 1434 for (f = n - 1; f >= 0; f--) 1435 if (!isdigit(dl->name[f])) 1436 break; 1437 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1438 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1439 oname = dl->name; 1440 dl->name = name; 1441 /* our physical link name isn't updated (it probably isn't created yet) */ 1442 return oname; 1443 } 1444 1445 int 1446 datalink_SetMode(struct datalink *dl, int mode) 1447 { 1448 if (!physical_SetMode(dl->physical, mode)) 1449 return 0; 1450 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1451 dl->script.run = 0; 1452 if (dl->physical->type == PHYS_DIRECT) 1453 dl->reconnect_tries = 0; 1454 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) && 1455 dl->state <= DATALINK_READY) 1456 datalink_Up(dl, 1, 1); 1457 return 1; 1458 } 1459 1460 int 1461 datalink_GetDialTimeout(struct datalink *dl) 1462 { 1463 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc; 1464 1465 if (dl->dial.incs < dl->cfg.dial.maxinc) 1466 dl->dial.incs++; 1467 1468 return result; 1469 } 1470