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/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 76 static void datalink_LoginDone(struct datalink *); 77 static void datalink_NewState(struct datalink *, int); 78 79 static void 80 datalink_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 89 static int 90 datalink_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 result = (random() % DIAL_TIMEOUT) + 1; 98 dl->dial.timer.load = result * SECTICKS; 99 dl->dial.timer.func = datalink_OpenTimeout; 100 dl->dial.timer.name = "dial"; 101 dl->dial.timer.arg = dl; 102 timer_Start(&dl->dial.timer); 103 if (dl->state == DATALINK_OPENING) 104 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n", 105 dl->name, result); 106 } 107 return result; 108 } 109 110 static void 111 datalink_HangupDone(struct datalink *dl) 112 { 113 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp && 114 dl->physical->fd != -1) { 115 /* Don't close our device if the link is dedicated */ 116 datalink_LoginDone(dl); 117 return; 118 } 119 120 chat_Finish(&dl->chat); 121 physical_Close(dl->physical); 122 dl->phone.chosen = "N/A"; 123 124 if (dl->cbcp.required) { 125 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone); 126 dl->cfg.callback.opmask = 0; 127 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone, 128 sizeof dl->cfg.phone.list - 1); 129 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0'; 130 dl->phone.alt = dl->phone.next = NULL; 131 dl->reconnect_tries = dl->cfg.reconnect.max; 132 dl->dial.tries = dl->cfg.dial.max; 133 dl->dial.incs = 0; 134 dl->script.run = 1; 135 dl->script.packetmode = 1; 136 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND)) 137 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n"); 138 bundle_LinksRemoved(dl->bundle); 139 /* if dial.timeout is < 0 (random), we don't override fsm.delay */ 140 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout) 141 dl->cbcp.fsm.delay = dl->cfg.dial.timeout; 142 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay); 143 cbcp_Down(&dl->cbcp); 144 datalink_NewState(dl, DATALINK_OPENING); 145 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 146 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 147 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 148 } else if (dl->bundle->CleaningUp || 149 (dl->physical->type == PHYS_DIRECT) || 150 ((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) && 151 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) { 152 datalink_NewState(dl, DATALINK_CLOSED); 153 dl->dial.tries = -1; 154 dl->dial.incs = 0; 155 dl->reconnect_tries = 0; 156 bundle_LinkClosed(dl->bundle, dl); 157 if (!dl->bundle->CleaningUp && 158 !(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND))) 159 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 160 } else { 161 datalink_NewState(dl, DATALINK_OPENING); 162 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 163 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 164 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 165 if (dl->dial.tries < 0) { 166 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout); 167 dl->dial.tries = dl->cfg.dial.max; 168 dl->dial.incs = 0; 169 dl->reconnect_tries--; 170 log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n", 171 dl->name, dl->cfg.reconnect.max - dl->reconnect_tries, 172 dl->cfg.reconnect.max); 173 bundle_Notify(dl->bundle, EX_RECONNECT); 174 } else { 175 if (dl->phone.next == NULL) 176 datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 177 else 178 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 179 bundle_Notify(dl->bundle, EX_REDIAL); 180 } 181 } 182 } 183 184 const char * 185 datalink_ChoosePhoneNumber(struct datalink *dl) 186 { 187 char *phone; 188 189 if (dl->phone.alt == NULL) { 190 if (dl->phone.next == NULL) { 191 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1); 192 dl->phone.list[sizeof dl->phone.list - 1] = '\0'; 193 if (*dl->phone.list == '\0') 194 return ""; 195 dl->phone.next = dl->phone.list; 196 } 197 dl->phone.alt = strsep(&dl->phone.next, ":"); 198 } 199 phone = strsep(&dl->phone.alt, "|"); 200 dl->phone.chosen = *phone ? phone : "[NONE]"; 201 if (*phone) 202 log_Printf(LogCHAT, "Phone: %s\n", phone); 203 return phone; 204 } 205 206 static void 207 datalink_LoginDone(struct datalink *dl) 208 { 209 chat_Finish(&dl->chat); 210 211 if (!dl->script.packetmode) { 212 dl->dial.tries = -1; 213 dl->dial.incs = 0; 214 datalink_NewState(dl, DATALINK_READY); 215 } else if (!physical_Raw(dl->physical)) { 216 dl->dial.tries = 0; 217 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 218 if (dl->script.run) { 219 datalink_NewState(dl, DATALINK_LOGOUT); 220 if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL)) 221 log_Printf(LogWARN, "Invalid logout script\n"); 222 } else { 223 physical_StopDeviceTimer(dl->physical); 224 if (dl->physical->type == PHYS_DEDICATED) 225 /* force a redial timeout */ 226 physical_Close(dl->physical); 227 datalink_HangupDone(dl); 228 } 229 } else { 230 dl->dial.tries = -1; 231 dl->dial.incs = 0; 232 233 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 234 async_Init(&dl->physical->async); 235 236 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 237 0 : dl->physical->link.lcp.cfg.openmode); 238 ccp_Setup(&dl->physical->link.ccp); 239 240 datalink_NewState(dl, DATALINK_LCP); 241 fsm_Up(&dl->physical->link.lcp.fsm); 242 fsm_Open(&dl->physical->link.lcp.fsm); 243 } 244 } 245 246 static int 247 datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 248 int *n) 249 { 250 struct datalink *dl = descriptor2datalink(d); 251 int result; 252 253 result = 0; 254 switch (dl->state) { 255 case DATALINK_CLOSED: 256 if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND| 257 PHYS_FOREGROUND|PHYS_DDIAL)) && 258 !dl->bundle->CleaningUp) 259 /* 260 * Our first time in - DEDICATED & DDIAL never come down, and 261 * DIRECT, FOREGROUND & BACKGROUND get deleted when they enter 262 * DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up() 263 * and fall through. 264 */ 265 datalink_Up(dl, 1, 1); 266 else 267 break; 268 /* fall through */ 269 270 case DATALINK_OPENING: 271 if (dl->dial.timer.state != TIMER_RUNNING) { 272 if (--dl->dial.tries < 0) 273 dl->dial.tries = 0; 274 if (physical_Open(dl->physical, dl->bundle) >= 0) { 275 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n" 276 "Type `~?' for help\r\n", dl->name, 277 dl->physical->name.full); 278 if (dl->script.run) { 279 datalink_NewState(dl, DATALINK_DIAL); 280 if (!chat_Setup(&dl->chat, dl->cfg.script.dial, 281 *dl->cfg.script.dial ? 282 datalink_ChoosePhoneNumber(dl) : "")) 283 log_Printf(LogWARN, "Invalid dial script\n"); 284 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 285 dl->cfg.dial.max) 286 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 287 dl->name, dl->cfg.dial.max - dl->dial.tries, 288 dl->cfg.dial.max); 289 } else 290 datalink_NewState(dl, DATALINK_CARRIER); 291 return datalink_UpdateSet(d, r, w, e, n); 292 } else { 293 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 294 dl->cfg.dial.max) 295 log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n", 296 dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max); 297 else 298 log_Printf(LogCHAT, "Failed to open device\n"); 299 300 if (dl->bundle->CleaningUp || 301 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 302 dl->cfg.dial.max && dl->dial.tries == 0)) { 303 datalink_NewState(dl, DATALINK_CLOSED); 304 dl->reconnect_tries = 0; 305 dl->dial.tries = -1; 306 log_WritePrompts(dl, "Failed to open %s\n", 307 dl->physical->name.full); 308 bundle_LinkClosed(dl->bundle, dl); 309 } 310 if (!dl->bundle->CleaningUp) { 311 int timeout; 312 313 timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl)); 314 bundle_Notify(dl->bundle, EX_REDIAL); 315 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n", 316 dl->physical->name.full, timeout); 317 } 318 } 319 } 320 break; 321 322 case DATALINK_CARRIER: 323 /* Wait for carrier on the device */ 324 switch (physical_AwaitCarrier(dl->physical)) { 325 case CARRIER_PENDING: 326 log_Printf(LogDEBUG, "Waiting for carrier\n"); 327 return 0; /* A device timer is running to wake us up again */ 328 329 case CARRIER_OK: 330 if (dl->script.run) { 331 datalink_NewState(dl, DATALINK_LOGIN); 332 if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL)) 333 log_Printf(LogWARN, "Invalid login script\n"); 334 } else 335 datalink_LoginDone(dl); 336 return datalink_UpdateSet(d, r, w, e, n); 337 338 case CARRIER_LOST: 339 physical_Offline(dl->physical); /* Is this required ? */ 340 if (dl->script.run) { 341 datalink_NewState(dl, DATALINK_HANGUP); 342 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 343 log_Printf(LogWARN, "Invalid hangup script\n"); 344 return datalink_UpdateSet(d, r, w, e, n); 345 } else { 346 datalink_HangupDone(dl); 347 return 0; /* Maybe bundle_CleanDatalinks() has something to do */ 348 } 349 } 350 351 case DATALINK_HANGUP: 352 case DATALINK_DIAL: 353 case DATALINK_LOGOUT: 354 case DATALINK_LOGIN: 355 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 356 switch (dl->chat.state) { 357 case CHAT_DONE: 358 /* script succeeded */ 359 switch(dl->state) { 360 case DATALINK_HANGUP: 361 datalink_HangupDone(dl); 362 break; 363 case DATALINK_DIAL: 364 datalink_NewState(dl, DATALINK_CARRIER); 365 return datalink_UpdateSet(d, r, w, e, n); 366 case DATALINK_LOGOUT: 367 datalink_NewState(dl, DATALINK_HANGUP); 368 physical_Offline(dl->physical); 369 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 370 log_Printf(LogWARN, "Invalid hangup script\n"); 371 return datalink_UpdateSet(d, r, w, e, n); 372 case DATALINK_LOGIN: 373 dl->phone.alt = NULL; 374 datalink_LoginDone(dl); 375 return datalink_UpdateSet(d, r, w, e, n); 376 } 377 break; 378 case CHAT_FAILED: 379 /* Going down - script failed */ 380 log_Printf(LogWARN, "Chat script failed\n"); 381 switch(dl->state) { 382 case DATALINK_HANGUP: 383 datalink_HangupDone(dl); 384 break; 385 case DATALINK_DIAL: 386 case DATALINK_LOGOUT: 387 case DATALINK_LOGIN: 388 datalink_NewState(dl, DATALINK_HANGUP); 389 physical_Offline(dl->physical); 390 if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL)) 391 log_Printf(LogWARN, "Invalid hangup script\n"); 392 return datalink_UpdateSet(d, r, w, e, n); 393 } 394 break; 395 } 396 break; 397 398 case DATALINK_READY: 399 case DATALINK_LCP: 400 case DATALINK_AUTH: 401 case DATALINK_CBCP: 402 case DATALINK_OPEN: 403 result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) + 404 descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 405 break; 406 } 407 return result; 408 } 409 410 int 411 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 412 { 413 return physical_RemoveFromSet(dl->physical, r, w, e); 414 } 415 416 static int 417 datalink_IsSet(struct fdescriptor *d, const fd_set *fdset) 418 { 419 struct datalink *dl = descriptor2datalink(d); 420 421 switch (dl->state) { 422 case DATALINK_CLOSED: 423 case DATALINK_OPENING: 424 break; 425 426 case DATALINK_HANGUP: 427 case DATALINK_DIAL: 428 case DATALINK_LOGOUT: 429 case DATALINK_LOGIN: 430 return descriptor_IsSet(&dl->chat.desc, fdset); 431 432 case DATALINK_READY: 433 case DATALINK_LCP: 434 case DATALINK_AUTH: 435 case DATALINK_CBCP: 436 case DATALINK_OPEN: 437 return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 : 438 descriptor_IsSet(&dl->physical->desc, fdset); 439 } 440 return 0; 441 } 442 443 static void 444 datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset) 445 { 446 struct datalink *dl = descriptor2datalink(d); 447 448 switch (dl->state) { 449 case DATALINK_CLOSED: 450 case DATALINK_OPENING: 451 break; 452 453 case DATALINK_HANGUP: 454 case DATALINK_DIAL: 455 case DATALINK_LOGOUT: 456 case DATALINK_LOGIN: 457 descriptor_Read(&dl->chat.desc, bundle, fdset); 458 break; 459 460 case DATALINK_READY: 461 case DATALINK_LCP: 462 case DATALINK_AUTH: 463 case DATALINK_CBCP: 464 case DATALINK_OPEN: 465 if (descriptor_IsSet(&dl->chap.desc, fdset)) 466 descriptor_Read(&dl->chap.desc, bundle, fdset); 467 if (descriptor_IsSet(&dl->physical->desc, fdset)) 468 descriptor_Read(&dl->physical->desc, bundle, fdset); 469 break; 470 } 471 } 472 473 static int 474 datalink_Write(struct fdescriptor *d, struct bundle *bundle, 475 const fd_set *fdset) 476 { 477 struct datalink *dl = descriptor2datalink(d); 478 int result = 0; 479 480 switch (dl->state) { 481 case DATALINK_CLOSED: 482 case DATALINK_OPENING: 483 break; 484 485 case DATALINK_HANGUP: 486 case DATALINK_DIAL: 487 case DATALINK_LOGOUT: 488 case DATALINK_LOGIN: 489 result = descriptor_Write(&dl->chat.desc, bundle, fdset); 490 break; 491 492 case DATALINK_READY: 493 case DATALINK_LCP: 494 case DATALINK_AUTH: 495 case DATALINK_CBCP: 496 case DATALINK_OPEN: 497 if (descriptor_IsSet(&dl->chap.desc, fdset)) 498 result += descriptor_Write(&dl->chap.desc, bundle, fdset); 499 if (descriptor_IsSet(&dl->physical->desc, fdset)) 500 result += descriptor_Write(&dl->physical->desc, bundle, fdset); 501 break; 502 } 503 504 return result; 505 } 506 507 static void 508 datalink_ComeDown(struct datalink *dl, int how) 509 { 510 int stayonline; 511 512 if (how == CLOSE_LCP) 513 datalink_DontHangup(dl); 514 else if (how == CLOSE_STAYDOWN) 515 datalink_StayDown(dl); 516 517 stayonline = dl->stayonline; 518 dl->stayonline = 0; 519 520 if (dl->state >= DATALINK_READY && stayonline) { 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 } 539 540 static void 541 datalink_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 } 549 550 static void 551 datalink_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 } 575 576 static void 577 datalink_AuthReInit(struct datalink *dl) 578 { 579 auth_StopTimer(&dl->pap); 580 auth_StopTimer(&dl->chap.auth); 581 chap_ReInit(&dl->chap); 582 } 583 584 void 585 datalink_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 } 590 591 void 592 datalink_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 } 636 637 void 638 datalink_CBCPComplete(struct datalink *dl) 639 { 640 datalink_NewState(dl, DATALINK_LCP); 641 datalink_AuthReInit(dl); 642 fsm_Close(&dl->physical->link.lcp.fsm); 643 } 644 645 void 646 datalink_CBCPFailed(struct datalink *dl) 647 { 648 cbcp_Down(&dl->cbcp); 649 datalink_CBCPComplete(dl); 650 } 651 652 void 653 datalink_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 } 719 720 void 721 datalink_AuthNotOk(struct datalink *dl) 722 { 723 datalink_NewState(dl, DATALINK_LCP); 724 datalink_AuthReInit(dl); 725 fsm_Close(&dl->physical->link.lcp.fsm); 726 } 727 728 static void 729 datalink_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 } 756 757 static void 758 datalink_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 } 770 771 struct datalink * 772 datalink_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 } 850 851 struct datalink * 852 datalink_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 } 914 915 struct datalink * 916 datalink_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 } 941 942 void 943 datalink_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 } 980 981 void 982 datalink_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 if (how == CLOSE_LCP) 996 datalink_DontHangup(dl); 997 else if (how == CLOSE_STAYDOWN) 998 datalink_StayDown(dl); 999 fsm_Close(&dl->physical->link.lcp.fsm); 1000 break; 1001 1002 default: 1003 datalink_ComeDown(dl, how); 1004 } 1005 } 1006 1007 void 1008 datalink_Down(struct datalink *dl, int how) 1009 { 1010 /* Carrier is lost */ 1011 switch (dl->state) { 1012 case DATALINK_OPEN: 1013 peerid_Init(&dl->peer); 1014 fsm2initial(&dl->physical->link.ccp.fsm); 1015 /* fall through */ 1016 1017 case DATALINK_CBCP: 1018 case DATALINK_AUTH: 1019 case DATALINK_LCP: 1020 fsm2initial(&dl->physical->link.lcp.fsm); 1021 if (dl->state == DATALINK_OPENING) 1022 return; /* we're doing a callback... */ 1023 /* fall through */ 1024 1025 default: 1026 datalink_ComeDown(dl, how); 1027 } 1028 } 1029 1030 void 1031 datalink_StayDown(struct datalink *dl) 1032 { 1033 dl->dial.tries = -1; 1034 dl->reconnect_tries = 0; 1035 dl->stayonline = 0; 1036 } 1037 1038 void 1039 datalink_DontHangup(struct datalink *dl) 1040 { 1041 dl->dial.tries = -1; 1042 dl->reconnect_tries = 0; 1043 dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0; 1044 } 1045 1046 int 1047 datalink_Show(struct cmdargs const *arg) 1048 { 1049 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 1050 prompt_Printf(arg->prompt, " State: %s\n", 1051 datalink_State(arg->cx)); 1052 prompt_Printf(arg->prompt, " Peer name: "); 1053 if (*arg->cx->peer.authname) 1054 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 1055 else if (arg->cx->state == DATALINK_OPEN) 1056 prompt_Printf(arg->prompt, "None requested\n"); 1057 else 1058 prompt_Printf(arg->prompt, "N/A\n"); 1059 prompt_Printf(arg->prompt, " Discriminator: %s\n", 1060 mp_Enddisc(arg->cx->peer.enddisc.class, 1061 arg->cx->peer.enddisc.address, 1062 arg->cx->peer.enddisc.len)); 1063 1064 prompt_Printf(arg->prompt, "\nDefaults:\n"); 1065 prompt_Printf(arg->prompt, " Phone List: %s\n", 1066 arg->cx->cfg.phone.list); 1067 if (arg->cx->cfg.dial.max) 1068 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 1069 arg->cx->cfg.dial.max); 1070 else 1071 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 1072 if (arg->cx->cfg.dial.next_timeout >= 0) 1073 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 1074 else 1075 prompt_Printf(arg->prompt, "random/"); 1076 if (arg->cx->cfg.dial.timeout >= 0) 1077 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 1078 else 1079 prompt_Printf(arg->prompt, "random\n"); 1080 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 1081 arg->cx->cfg.reconnect.max); 1082 if (arg->cx->cfg.reconnect.timeout > 0) 1083 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 1084 else 1085 prompt_Printf(arg->prompt, "random\n"); 1086 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 1087 PHYS_DIRECT ? "accepted: " : "requested:"); 1088 if (!arg->cx->cfg.callback.opmask) 1089 prompt_Printf(arg->prompt, "none\n"); 1090 else { 1091 int comma = 0; 1092 1093 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 1094 prompt_Printf(arg->prompt, "none"); 1095 comma = 1; 1096 } 1097 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 1098 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 1099 comma = 1; 1100 } 1101 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 1102 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 1103 if (arg->cx->physical->type != PHYS_DIRECT) 1104 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 1105 comma = 1; 1106 } 1107 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 1108 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 1109 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 1110 arg->cx->cfg.cbcp.delay); 1111 prompt_Printf(arg->prompt, " phone: "); 1112 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 1113 if (arg->cx->physical->type & PHYS_DIRECT) 1114 prompt_Printf(arg->prompt, "Caller decides\n"); 1115 else 1116 prompt_Printf(arg->prompt, "Dialback server decides\n"); 1117 } else 1118 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 1119 prompt_Printf(arg->prompt, " timeout: %lds\n", 1120 arg->cx->cfg.cbcp.fsmretry); 1121 } else 1122 prompt_Printf(arg->prompt, "\n"); 1123 } 1124 1125 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1126 arg->cx->cfg.script.dial); 1127 prompt_Printf(arg->prompt, " Login Script: %s\n", 1128 arg->cx->cfg.script.login); 1129 prompt_Printf(arg->prompt, " Logout Script: %s\n", 1130 arg->cx->cfg.script.logout); 1131 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1132 arg->cx->cfg.script.hangup); 1133 return 0; 1134 } 1135 1136 int 1137 datalink_SetReconnect(struct cmdargs const *arg) 1138 { 1139 if (arg->argc == arg->argn+2) { 1140 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1141 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1142 return 0; 1143 } 1144 return -1; 1145 } 1146 1147 int 1148 datalink_SetRedial(struct cmdargs const *arg) 1149 { 1150 const char *sep, *osep; 1151 int timeout, inc, maxinc, tries; 1152 1153 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1154 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1155 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1156 arg->cx->cfg.dial.timeout = -1; 1157 randinit(); 1158 } else { 1159 timeout = atoi(arg->argv[arg->argn]); 1160 1161 if (timeout >= 0) 1162 arg->cx->cfg.dial.timeout = timeout; 1163 else { 1164 log_Printf(LogWARN, "Invalid redial timeout\n"); 1165 return -1; 1166 } 1167 } 1168 1169 sep = strchr(arg->argv[arg->argn], '+'); 1170 if (sep) { 1171 inc = atoi(++sep); 1172 osep = sep; 1173 if (inc >= 0) 1174 arg->cx->cfg.dial.inc = inc; 1175 else { 1176 log_Printf(LogWARN, "Invalid timeout increment\n"); 1177 return -1; 1178 } 1179 sep = strchr(sep, '-'); 1180 if (sep) { 1181 maxinc = atoi(++sep); 1182 if (maxinc >= 0) 1183 arg->cx->cfg.dial.maxinc = maxinc; 1184 else { 1185 log_Printf(LogWARN, "Invalid maximum timeout increments\n"); 1186 return -1; 1187 } 1188 } else { 1189 /* Default timeout increment */ 1190 arg->cx->cfg.dial.maxinc = 10; 1191 sep = osep; 1192 } 1193 } else { 1194 /* Default timeout increment & max increment */ 1195 arg->cx->cfg.dial.inc = 0; 1196 arg->cx->cfg.dial.maxinc = 10; 1197 sep = arg->argv[arg->argn]; 1198 } 1199 1200 sep = strchr(sep, '.'); 1201 if (sep) { 1202 if (strcasecmp(++sep, "random") == 0) { 1203 arg->cx->cfg.dial.next_timeout = -1; 1204 randinit(); 1205 } else { 1206 timeout = atoi(sep); 1207 if (timeout >= 0) 1208 arg->cx->cfg.dial.next_timeout = timeout; 1209 else { 1210 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1211 return -1; 1212 } 1213 } 1214 } else 1215 /* Default next timeout */ 1216 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1217 1218 if (arg->argc == arg->argn+2) { 1219 tries = atoi(arg->argv[arg->argn+1]); 1220 1221 if (tries >= 0) { 1222 arg->cx->cfg.dial.max = tries; 1223 } else { 1224 log_Printf(LogWARN, "Invalid retry value\n"); 1225 return 1; 1226 } 1227 } 1228 return 0; 1229 } 1230 1231 return -1; 1232 } 1233 1234 static const char * const states[] = { 1235 "closed", 1236 "opening", 1237 "hangup", 1238 "dial", 1239 "carrier", 1240 "logout", 1241 "login", 1242 "ready", 1243 "lcp", 1244 "auth", 1245 "cbcp", 1246 "open" 1247 }; 1248 1249 const char * 1250 datalink_State(struct datalink *dl) 1251 { 1252 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1253 return "unknown"; 1254 return states[dl->state]; 1255 } 1256 1257 static void 1258 datalink_NewState(struct datalink *dl, int state) 1259 { 1260 if (state != dl->state) { 1261 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1262 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1263 states[state]); 1264 dl->state = state; 1265 } else 1266 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1267 } 1268 } 1269 1270 struct datalink * 1271 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1272 int fd, int *auxfd, int *nauxfd) 1273 { 1274 struct datalink *dl, *cdl; 1275 struct fsm_retry copy; 1276 char *oname; 1277 1278 dl = (struct datalink *)iov[(*niov)++].iov_base; 1279 dl->name = iov[*niov].iov_base; 1280 1281 if (dl->name[DATALINK_MAXNAME-1]) { 1282 dl->name[DATALINK_MAXNAME-1] = '\0'; 1283 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1284 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1285 } 1286 1287 /* Make sure the name is unique ! */ 1288 oname = NULL; 1289 do { 1290 for (cdl = bundle->links; cdl; cdl = cdl->next) 1291 if (!strcasecmp(dl->name, cdl->name)) { 1292 if (oname) 1293 free(datalink_NextName(dl)); 1294 else 1295 oname = datalink_NextName(dl); 1296 break; /* Keep renaming 'till we have no conflicts */ 1297 } 1298 } while (cdl); 1299 1300 if (oname) { 1301 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1302 free(oname); 1303 } else { 1304 dl->name = strdup(dl->name); 1305 free(iov[*niov].iov_base); 1306 } 1307 (*niov)++; 1308 1309 dl->desc.type = DATALINK_DESCRIPTOR; 1310 dl->desc.UpdateSet = datalink_UpdateSet; 1311 dl->desc.IsSet = datalink_IsSet; 1312 dl->desc.Read = datalink_Read; 1313 dl->desc.Write = datalink_Write; 1314 1315 mp_linkInit(&dl->mp); 1316 *dl->phone.list = '\0'; 1317 dl->phone.next = NULL; 1318 dl->phone.alt = NULL; 1319 dl->phone.chosen = "N/A"; 1320 1321 dl->bundle = bundle; 1322 dl->next = NULL; 1323 memset(&dl->dial.timer, '\0', sizeof dl->dial.timer); 1324 dl->dial.tries = 0; 1325 dl->reconnect_tries = 0; 1326 dl->parent = &bundle->fsm; 1327 dl->fsmp.LayerStart = datalink_LayerStart; 1328 dl->fsmp.LayerUp = datalink_LayerUp; 1329 dl->fsmp.LayerDown = datalink_LayerDown; 1330 dl->fsmp.LayerFinish = datalink_LayerFinish; 1331 dl->fsmp.object = dl; 1332 1333 dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd); 1334 1335 if (!dl->physical) { 1336 free(dl->name); 1337 free(dl); 1338 dl = NULL; 1339 } else { 1340 copy = dl->pap.cfg.fsm; 1341 pap_Init(&dl->pap, dl->physical); 1342 dl->pap.cfg.fsm = copy; 1343 1344 copy = dl->chap.auth.cfg.fsm; 1345 chap_Init(&dl->chap, dl->physical); 1346 dl->chap.auth.cfg.fsm = copy; 1347 1348 cbcp_Init(&dl->cbcp, dl->physical); 1349 1350 memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */ 1351 chat_Init(&dl->chat, dl->physical); 1352 1353 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1354 dl->name, datalink_State(dl)); 1355 } 1356 1357 return dl; 1358 } 1359 1360 int 1361 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1362 int *auxfd, int *nauxfd) 1363 { 1364 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1365 int link_fd; 1366 1367 if (dl) { 1368 timer_Stop(&dl->dial.timer); 1369 /* The following is purely for the sake of paranoia */ 1370 cbcp_Down(&dl->cbcp); 1371 timer_Stop(&dl->pap.authtimer); 1372 timer_Stop(&dl->chap.auth.authtimer); 1373 } 1374 1375 if (*niov >= maxiov - 1) { 1376 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1377 if (dl) { 1378 free(dl->name); 1379 free(dl); 1380 } 1381 return -1; 1382 } 1383 1384 iov[*niov].iov_base = (void *)dl; 1385 iov[(*niov)++].iov_len = sizeof *dl; 1386 iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL; 1387 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1388 1389 link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd, 1390 nauxfd); 1391 1392 if (link_fd == -1 && dl) { 1393 free(dl->name); 1394 free(dl); 1395 } 1396 1397 return link_fd; 1398 } 1399 1400 void 1401 datalink_Rename(struct datalink *dl, const char *name) 1402 { 1403 free(dl->name); 1404 dl->physical->link.name = dl->name = strdup(name); 1405 } 1406 1407 char * 1408 datalink_NextName(struct datalink *dl) 1409 { 1410 int f, n; 1411 char *name, *oname; 1412 1413 n = strlen(dl->name); 1414 name = (char *)malloc(n+3); 1415 for (f = n - 1; f >= 0; f--) 1416 if (!isdigit(dl->name[f])) 1417 break; 1418 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1419 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1420 oname = dl->name; 1421 dl->name = name; 1422 /* our physical link name isn't updated (it probably isn't created yet) */ 1423 return oname; 1424 } 1425 1426 int 1427 datalink_SetMode(struct datalink *dl, int mode) 1428 { 1429 if (!physical_SetMode(dl->physical, mode)) 1430 return 0; 1431 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1432 dl->script.run = 0; 1433 if (dl->physical->type == PHYS_DIRECT) 1434 dl->reconnect_tries = 0; 1435 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) && 1436 dl->state <= DATALINK_READY) 1437 datalink_Up(dl, 1, 1); 1438 return 1; 1439 } 1440 1441 int 1442 datalink_GetDialTimeout(struct datalink *dl) 1443 { 1444 int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc; 1445 1446 if (dl->dial.incs < dl->cfg.dial.maxinc) 1447 dl->dial.incs++; 1448 1449 return result; 1450 } 1451