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 * $Id: datalink.c,v 1.22 1998/12/15 19:12:24 brian Exp $ 27 */ 28 29 #include <sys/types.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 "mbuf.h" 43 #include "log.h" 44 #include "defs.h" 45 #include "timer.h" 46 #include "fsm.h" 47 #include "lcp.h" 48 #include "descriptor.h" 49 #include "lqr.h" 50 #include "hdlc.h" 51 #include "async.h" 52 #include "throughput.h" 53 #include "ccp.h" 54 #include "link.h" 55 #include "physical.h" 56 #include "iplist.h" 57 #include "slcompress.h" 58 #include "ipcp.h" 59 #include "filter.h" 60 #include "mp.h" 61 #include "bundle.h" 62 #include "chat.h" 63 #include "auth.h" 64 #include "modem.h" 65 #include "prompt.h" 66 #include "lcpproto.h" 67 #include "pap.h" 68 #include "chap.h" 69 #include "command.h" 70 #include "cbcp.h" 71 #include "datalink.h" 72 73 static void datalink_LoginDone(struct datalink *); 74 static void datalink_NewState(struct datalink *, int); 75 76 static void 77 datalink_OpenTimeout(void *v) 78 { 79 struct datalink *dl = (struct datalink *)v; 80 81 timer_Stop(&dl->dial_timer); 82 if (dl->state == DATALINK_OPENING) 83 log_Printf(LogPHASE, "%s: Redial timer expired.\n", dl->name); 84 } 85 86 static void 87 datalink_StartDialTimer(struct datalink *dl, int Timeout) 88 { 89 timer_Stop(&dl->dial_timer); 90 91 if (Timeout) { 92 if (Timeout > 0) 93 dl->dial_timer.load = Timeout * SECTICKS; 94 else 95 dl->dial_timer.load = (random() % DIAL_TIMEOUT) * SECTICKS; 96 dl->dial_timer.func = datalink_OpenTimeout; 97 dl->dial_timer.name = "dial"; 98 dl->dial_timer.arg = dl; 99 timer_Start(&dl->dial_timer); 100 if (dl->state == DATALINK_OPENING) 101 log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n", 102 dl->name, Timeout); 103 } 104 } 105 106 static void 107 datalink_HangupDone(struct datalink *dl) 108 { 109 if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp && 110 physical_GetFD(dl->physical) != -1) { 111 /* Don't close our modem if the link is dedicated */ 112 datalink_LoginDone(dl); 113 return; 114 } 115 116 modem_Close(dl->physical); 117 dl->phone.chosen = "N/A"; 118 119 if (dl->cbcp.required) { 120 log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone); 121 dl->cfg.callback.opmask = 0; 122 strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone, 123 sizeof dl->cfg.phone.list - 1); 124 dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0'; 125 dl->phone.alt = dl->phone.next = NULL; 126 dl->reconnect_tries = dl->cfg.reconnect.max; 127 dl->dial_tries = dl->cfg.dial.max; 128 dl->script.run = 1; 129 dl->script.packetmode = 1; 130 if (!physical_SetMode(dl->physical, PHYS_BACKGROUND)) 131 log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n"); 132 bundle_LinksRemoved(dl->bundle); 133 if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout) 134 dl->cbcp.fsm.delay = dl->cfg.dial.timeout; 135 datalink_StartDialTimer(dl, dl->cbcp.fsm.delay); 136 cbcp_Down(&dl->cbcp); 137 datalink_NewState(dl, DATALINK_OPENING); 138 } else if (dl->bundle->CleaningUp || 139 (dl->physical->type == PHYS_DIRECT) || 140 ((!dl->dial_tries || (dl->dial_tries < 0 && !dl->reconnect_tries)) && 141 !(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) { 142 datalink_NewState(dl, DATALINK_CLOSED); 143 dl->dial_tries = -1; 144 dl->reconnect_tries = 0; 145 bundle_LinkClosed(dl->bundle, dl); 146 if (!dl->bundle->CleaningUp) 147 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 148 } else { 149 datalink_NewState(dl, DATALINK_OPENING); 150 if (dl->dial_tries < 0) { 151 datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout); 152 dl->dial_tries = dl->cfg.dial.max; 153 dl->reconnect_tries--; 154 } else { 155 if (dl->phone.next == NULL) 156 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 157 else 158 datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout); 159 } 160 } 161 } 162 163 static const char * 164 datalink_ChoosePhoneNumber(struct datalink *dl) 165 { 166 char *phone; 167 168 if (dl->phone.alt == NULL) { 169 if (dl->phone.next == NULL) { 170 strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1); 171 dl->phone.list[sizeof dl->phone.list - 1] = '\0'; 172 dl->phone.next = dl->phone.list; 173 } 174 dl->phone.alt = strsep(&dl->phone.next, ":"); 175 } 176 phone = strsep(&dl->phone.alt, "|"); 177 dl->phone.chosen = *phone ? phone : "[NONE]"; 178 if (*phone) 179 log_Printf(LogPHASE, "Phone: %s\n", phone); 180 return phone; 181 } 182 183 static void 184 datalink_LoginDone(struct datalink *dl) 185 { 186 if (!dl->script.packetmode) { 187 dl->dial_tries = -1; 188 datalink_NewState(dl, DATALINK_READY); 189 } else if (modem_Raw(dl->physical, dl->bundle) < 0) { 190 dl->dial_tries = 0; 191 log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n"); 192 if (dl->script.run) { 193 datalink_NewState(dl, DATALINK_HANGUP); 194 modem_Offline(dl->physical); 195 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 196 } else { 197 timer_Stop(&dl->physical->Timer); 198 if (dl->physical->type == PHYS_DEDICATED) 199 /* force a redial timeout */ 200 modem_Close(dl->physical); 201 datalink_HangupDone(dl); 202 } 203 } else { 204 dl->dial_tries = -1; 205 206 hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp); 207 async_Init(&dl->physical->async); 208 209 lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ? 210 0 : dl->physical->link.lcp.cfg.openmode); 211 ccp_Setup(&dl->physical->link.ccp); 212 213 datalink_NewState(dl, DATALINK_LCP); 214 fsm_Up(&dl->physical->link.lcp.fsm); 215 fsm_Open(&dl->physical->link.lcp.fsm); 216 } 217 } 218 219 static int 220 datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, 221 int *n) 222 { 223 struct datalink *dl = descriptor2datalink(d); 224 int result; 225 226 result = 0; 227 switch (dl->state) { 228 case DATALINK_CLOSED: 229 if ((dl->physical->type & 230 (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|PHYS_DDIAL)) && 231 !bundle_IsDead(dl->bundle)) 232 /* 233 * Our first time in - DEDICATED & DDIAL never come down, and 234 * DIRECT & BACKGROUND get deleted when they enter DATALINK_CLOSED. 235 * Go to DATALINK_OPENING via datalink_Up() and fall through. 236 */ 237 datalink_Up(dl, 1, 1); 238 else 239 break; 240 /* fall through */ 241 242 case DATALINK_OPENING: 243 if (dl->dial_timer.state != TIMER_RUNNING) { 244 if (--dl->dial_tries < 0) 245 dl->dial_tries = 0; 246 if (modem_Open(dl->physical, dl->bundle) >= 0) { 247 log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n" 248 "Type `~?' for help\r\n", dl->name, 249 dl->physical->name.full); 250 if (dl->script.run) { 251 datalink_NewState(dl, DATALINK_DIAL); 252 chat_Init(&dl->chat, dl->physical, dl->cfg.script.dial, 1, 253 datalink_ChoosePhoneNumber(dl)); 254 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 255 dl->cfg.dial.max) 256 log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n", 257 dl->name, dl->cfg.dial.max - dl->dial_tries, 258 dl->cfg.dial.max); 259 } else 260 datalink_LoginDone(dl); 261 return datalink_UpdateSet(d, r, w, e, n); 262 } else { 263 if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 264 dl->cfg.dial.max) 265 log_Printf(LogCHAT, "Failed to open modem (attempt %u of %d)\n", 266 dl->cfg.dial.max - dl->dial_tries, dl->cfg.dial.max); 267 else 268 log_Printf(LogCHAT, "Failed to open modem\n"); 269 270 if (dl->bundle->CleaningUp || 271 (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) && 272 dl->cfg.dial.max && dl->dial_tries == 0)) { 273 datalink_NewState(dl, DATALINK_CLOSED); 274 dl->reconnect_tries = 0; 275 dl->dial_tries = -1; 276 log_WritePrompts(dl, "Failed to open %s\n", 277 dl->physical->name.full); 278 bundle_LinkClosed(dl->bundle, dl); 279 } 280 if (!dl->bundle->CleaningUp) { 281 log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n", 282 dl->physical->name.full, dl->cfg.dial.timeout); 283 datalink_StartDialTimer(dl, dl->cfg.dial.timeout); 284 } 285 } 286 } 287 break; 288 289 case DATALINK_HANGUP: 290 case DATALINK_DIAL: 291 case DATALINK_LOGIN: 292 result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n); 293 switch (dl->chat.state) { 294 case CHAT_DONE: 295 /* script succeeded */ 296 chat_Destroy(&dl->chat); 297 switch(dl->state) { 298 case DATALINK_HANGUP: 299 datalink_HangupDone(dl); 300 break; 301 case DATALINK_DIAL: 302 datalink_NewState(dl, DATALINK_LOGIN); 303 chat_Init(&dl->chat, dl->physical, dl->cfg.script.login, 0, NULL); 304 return datalink_UpdateSet(d, r, w, e, n); 305 case DATALINK_LOGIN: 306 dl->phone.alt = NULL; 307 datalink_LoginDone(dl); 308 break; 309 } 310 break; 311 case CHAT_FAILED: 312 /* Going down - script failed */ 313 log_Printf(LogWARN, "Chat script failed\n"); 314 chat_Destroy(&dl->chat); 315 switch(dl->state) { 316 case DATALINK_HANGUP: 317 datalink_HangupDone(dl); 318 break; 319 case DATALINK_DIAL: 320 case DATALINK_LOGIN: 321 datalink_NewState(dl, DATALINK_HANGUP); 322 modem_Offline(dl->physical); /* Is this required ? */ 323 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 324 return datalink_UpdateSet(d, r, w, e, n); 325 } 326 break; 327 } 328 break; 329 330 case DATALINK_READY: 331 case DATALINK_LCP: 332 case DATALINK_AUTH: 333 case DATALINK_CBCP: 334 case DATALINK_OPEN: 335 result = descriptor_UpdateSet(&dl->physical->desc, r, w, e, n); 336 break; 337 } 338 return result; 339 } 340 341 int 342 datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e) 343 { 344 return physical_RemoveFromSet(dl->physical, r, w, e); 345 } 346 347 static int 348 datalink_IsSet(struct descriptor *d, const fd_set *fdset) 349 { 350 struct datalink *dl = descriptor2datalink(d); 351 352 switch (dl->state) { 353 case DATALINK_CLOSED: 354 case DATALINK_OPENING: 355 break; 356 357 case DATALINK_HANGUP: 358 case DATALINK_DIAL: 359 case DATALINK_LOGIN: 360 return descriptor_IsSet(&dl->chat.desc, fdset); 361 362 case DATALINK_READY: 363 case DATALINK_LCP: 364 case DATALINK_AUTH: 365 case DATALINK_CBCP: 366 case DATALINK_OPEN: 367 return descriptor_IsSet(&dl->physical->desc, fdset); 368 } 369 return 0; 370 } 371 372 static void 373 datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 374 { 375 struct datalink *dl = descriptor2datalink(d); 376 377 switch (dl->state) { 378 case DATALINK_CLOSED: 379 case DATALINK_OPENING: 380 break; 381 382 case DATALINK_HANGUP: 383 case DATALINK_DIAL: 384 case DATALINK_LOGIN: 385 descriptor_Read(&dl->chat.desc, bundle, fdset); 386 break; 387 388 case DATALINK_READY: 389 case DATALINK_LCP: 390 case DATALINK_AUTH: 391 case DATALINK_CBCP: 392 case DATALINK_OPEN: 393 descriptor_Read(&dl->physical->desc, bundle, fdset); 394 break; 395 } 396 } 397 398 static int 399 datalink_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset) 400 { 401 struct datalink *dl = descriptor2datalink(d); 402 int result = 0; 403 404 switch (dl->state) { 405 case DATALINK_CLOSED: 406 case DATALINK_OPENING: 407 break; 408 409 case DATALINK_HANGUP: 410 case DATALINK_DIAL: 411 case DATALINK_LOGIN: 412 result = descriptor_Write(&dl->chat.desc, bundle, fdset); 413 break; 414 415 case DATALINK_READY: 416 case DATALINK_LCP: 417 case DATALINK_AUTH: 418 case DATALINK_CBCP: 419 case DATALINK_OPEN: 420 result = descriptor_Write(&dl->physical->desc, bundle, fdset); 421 break; 422 } 423 424 return result; 425 } 426 427 static void 428 datalink_ComeDown(struct datalink *dl, int how) 429 { 430 if (how != CLOSE_NORMAL) { 431 dl->dial_tries = -1; 432 dl->reconnect_tries = 0; 433 if (dl->state >= DATALINK_READY && how == CLOSE_LCP) 434 dl->stayonline = 1; 435 } 436 437 if (dl->state >= DATALINK_READY && dl->stayonline) { 438 dl->stayonline = 0; 439 timer_Stop(&dl->physical->Timer); 440 datalink_NewState(dl, DATALINK_READY); 441 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) { 442 modem_Offline(dl->physical); 443 chat_Destroy(&dl->chat); 444 if (dl->script.run && dl->state != DATALINK_OPENING) { 445 datalink_NewState(dl, DATALINK_HANGUP); 446 chat_Init(&dl->chat, dl->physical, dl->cfg.script.hangup, 1, NULL); 447 } else 448 datalink_HangupDone(dl); 449 } 450 } 451 452 static void 453 datalink_LayerStart(void *v, struct fsm *fp) 454 { 455 /* The given FSM is about to start up ! */ 456 struct datalink *dl = (struct datalink *)v; 457 458 if (fp->proto == PROTO_LCP) 459 (*dl->parent->LayerStart)(dl->parent->object, fp); 460 } 461 462 static void 463 datalink_LayerUp(void *v, struct fsm *fp) 464 { 465 /* The given fsm is now up */ 466 struct datalink *dl = (struct datalink *)v; 467 468 if (fp->proto == PROTO_LCP) { 469 datalink_GotAuthname(dl, "", 0); 470 dl->physical->link.lcp.auth_ineed = dl->physical->link.lcp.want_auth; 471 dl->physical->link.lcp.auth_iwait = dl->physical->link.lcp.his_auth; 472 if (dl->physical->link.lcp.his_auth || dl->physical->link.lcp.want_auth) { 473 if (bundle_Phase(dl->bundle) == PHASE_ESTABLISH) 474 bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE); 475 log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name, 476 Auth2Nam(dl->physical->link.lcp.his_auth), 477 Auth2Nam(dl->physical->link.lcp.want_auth)); 478 if (dl->physical->link.lcp.his_auth == PROTO_PAP) 479 auth_StartChallenge(&dl->pap, dl->physical, pap_SendChallenge); 480 if (dl->physical->link.lcp.want_auth == PROTO_CHAP) 481 auth_StartChallenge(&dl->chap.auth, dl->physical, chap_SendChallenge); 482 } else 483 datalink_AuthOk(dl); 484 } 485 } 486 487 void 488 datalink_GotAuthname(struct datalink *dl, const char *name, int len) 489 { 490 if (len >= sizeof dl->peer.authname) 491 len = sizeof dl->peer.authname - 1; 492 strncpy(dl->peer.authname, name, len); 493 dl->peer.authname[len] = '\0'; 494 } 495 496 void 497 datalink_NCPUp(struct datalink *dl) 498 { 499 int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp); 500 501 if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) { 502 /* we've authenticated in multilink mode ! */ 503 switch (mp_Up(&dl->bundle->ncp.mp, dl)) { 504 case MP_LINKSENT: 505 /* We've handed the link off to another ppp (well, we will soon) ! */ 506 return; 507 case MP_UP: 508 /* First link in the bundle */ 509 auth_Select(dl->bundle, dl->peer.authname); 510 /* fall through */ 511 case MP_ADDED: 512 /* We're in multilink mode ! */ 513 dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */ 514 break; 515 case MP_FAILED: 516 datalink_AuthNotOk(dl); 517 return; 518 } 519 } else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) { 520 log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name); 521 datalink_NewState(dl, DATALINK_OPEN); 522 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 523 return; 524 } else { 525 dl->bundle->ncp.mp.peer = dl->peer; 526 ipcp_SetLink(&dl->bundle->ncp.ipcp, &dl->physical->link); 527 auth_Select(dl->bundle, dl->peer.authname); 528 } 529 530 if (ccpok) { 531 fsm_Up(&dl->physical->link.ccp.fsm); 532 fsm_Open(&dl->physical->link.ccp.fsm); 533 } 534 datalink_NewState(dl, DATALINK_OPEN); 535 bundle_NewPhase(dl->bundle, PHASE_NETWORK); 536 (*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm); 537 } 538 539 void 540 datalink_CBCPComplete(struct datalink *dl) 541 { 542 datalink_NewState(dl, DATALINK_LCP); 543 fsm_Close(&dl->physical->link.lcp.fsm); 544 } 545 546 void 547 datalink_CBCPFailed(struct datalink *dl) 548 { 549 cbcp_Down(&dl->cbcp); 550 datalink_CBCPComplete(dl); 551 } 552 553 void 554 datalink_AuthOk(struct datalink *dl) 555 { 556 if (dl->physical->link.lcp.his_callback.opmask == 557 CALLBACK_BIT(CALLBACK_CBCP) || 558 dl->physical->link.lcp.want_callback.opmask == 559 CALLBACK_BIT(CALLBACK_CBCP)) { 560 datalink_NewState(dl, DATALINK_CBCP); 561 cbcp_Up(&dl->cbcp); 562 } else if (dl->physical->link.lcp.want_callback.opmask) { 563 log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name); 564 datalink_NewState(dl, DATALINK_LCP); 565 fsm_Close(&dl->physical->link.lcp.fsm); 566 } else 567 switch (dl->physical->link.lcp.his_callback.opmask) { 568 case 0: 569 datalink_NCPUp(dl); 570 break; 571 572 case CALLBACK_BIT(CALLBACK_AUTH): 573 auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone, 574 sizeof dl->cbcp.fsm.phone); 575 if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) { 576 log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name, 577 dl->peer.authname); 578 *dl->cbcp.fsm.phone = '\0'; 579 } else { 580 char *ptr = strchr(dl->cbcp.fsm.phone, ','); 581 if (ptr) 582 *ptr = '\0'; /* Call back on the first number */ 583 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 584 dl->cbcp.fsm.phone); 585 dl->cbcp.required = 1; 586 } 587 dl->cbcp.fsm.delay = 0; 588 datalink_NewState(dl, DATALINK_LCP); 589 fsm_Close(&dl->physical->link.lcp.fsm); 590 break; 591 592 case CALLBACK_BIT(CALLBACK_E164): 593 strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg, 594 sizeof dl->cbcp.fsm.phone - 1); 595 dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0'; 596 log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name, 597 dl->cbcp.fsm.phone); 598 dl->cbcp.required = 1; 599 dl->cbcp.fsm.delay = 0; 600 datalink_NewState(dl, DATALINK_LCP); 601 fsm_Close(&dl->physical->link.lcp.fsm); 602 break; 603 604 default: 605 log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n", 606 dl->name); 607 datalink_NewState(dl, DATALINK_LCP); 608 fsm_Close(&dl->physical->link.lcp.fsm); 609 break; 610 } 611 } 612 613 void 614 datalink_AuthNotOk(struct datalink *dl) 615 { 616 datalink_NewState(dl, DATALINK_LCP); 617 fsm_Close(&dl->physical->link.lcp.fsm); 618 } 619 620 static void 621 datalink_LayerDown(void *v, struct fsm *fp) 622 { 623 /* The given FSM has been told to come down */ 624 struct datalink *dl = (struct datalink *)v; 625 626 if (fp->proto == PROTO_LCP) { 627 switch (dl->state) { 628 case DATALINK_OPEN: 629 peerid_Init(&dl->peer); 630 fsm2initial(&dl->physical->link.ccp.fsm); 631 datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */ 632 (*dl->parent->LayerDown)(dl->parent->object, fp); 633 /* fall through (just in case) */ 634 635 case DATALINK_CBCP: 636 if (!dl->cbcp.required) 637 cbcp_Down(&dl->cbcp); 638 /* fall through (just in case) */ 639 640 case DATALINK_AUTH: 641 timer_Stop(&dl->pap.authtimer); 642 timer_Stop(&dl->chap.auth.authtimer); 643 } 644 datalink_NewState(dl, DATALINK_LCP); 645 } 646 } 647 648 static void 649 datalink_LayerFinish(void *v, struct fsm *fp) 650 { 651 /* The given fsm is now down */ 652 struct datalink *dl = (struct datalink *)v; 653 654 if (fp->proto == PROTO_LCP) { 655 fsm2initial(fp); 656 (*dl->parent->LayerFinish)(dl->parent->object, fp); 657 datalink_ComeDown(dl, CLOSE_NORMAL); 658 } else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE) 659 fsm_Open(fp); /* CCP goes to ST_STOPPED */ 660 } 661 662 struct datalink * 663 datalink_Create(const char *name, struct bundle *bundle, int type) 664 { 665 struct datalink *dl; 666 667 dl = (struct datalink *)malloc(sizeof(struct datalink)); 668 if (dl == NULL) 669 return dl; 670 671 dl->desc.type = DATALINK_DESCRIPTOR; 672 dl->desc.UpdateSet = datalink_UpdateSet; 673 dl->desc.IsSet = datalink_IsSet; 674 dl->desc.Read = datalink_Read; 675 dl->desc.Write = datalink_Write; 676 677 dl->state = DATALINK_CLOSED; 678 679 *dl->cfg.script.dial = '\0'; 680 *dl->cfg.script.login = '\0'; 681 *dl->cfg.script.hangup = '\0'; 682 *dl->cfg.phone.list = '\0'; 683 *dl->phone.list = '\0'; 684 dl->phone.next = NULL; 685 dl->phone.alt = NULL; 686 dl->phone.chosen = "N/A"; 687 dl->stayonline = 0; 688 dl->script.run = 1; 689 dl->script.packetmode = 1; 690 mp_linkInit(&dl->mp); 691 692 dl->bundle = bundle; 693 dl->next = NULL; 694 695 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 696 697 dl->dial_tries = 0; 698 dl->cfg.dial.max = 1; 699 dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 700 dl->cfg.dial.timeout = DIAL_TIMEOUT; 701 702 dl->reconnect_tries = 0; 703 dl->cfg.reconnect.max = 0; 704 dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT; 705 706 dl->cfg.callback.opmask = 0; 707 dl->cfg.cbcp.delay = 0; 708 *dl->cfg.cbcp.phone = '\0'; 709 dl->cfg.cbcp.fsmretry = DEF_FSMRETRY; 710 711 dl->name = strdup(name); 712 peerid_Init(&dl->peer); 713 dl->parent = &bundle->fsm; 714 dl->fsmp.LayerStart = datalink_LayerStart; 715 dl->fsmp.LayerUp = datalink_LayerUp; 716 dl->fsmp.LayerDown = datalink_LayerDown; 717 dl->fsmp.LayerFinish = datalink_LayerFinish; 718 dl->fsmp.object = dl; 719 720 auth_Init(&dl->pap); 721 auth_Init(&dl->chap.auth); 722 723 if ((dl->physical = modem_Create(dl, type)) == NULL) { 724 free(dl->name); 725 free(dl); 726 return NULL; 727 } 728 cbcp_Init(&dl->cbcp, dl->physical); 729 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 730 731 log_Printf(LogPHASE, "%s: Created in %s state\n", 732 dl->name, datalink_State(dl)); 733 734 return dl; 735 } 736 737 struct datalink * 738 datalink_Clone(struct datalink *odl, const char *name) 739 { 740 struct datalink *dl; 741 742 dl = (struct datalink *)malloc(sizeof(struct datalink)); 743 if (dl == NULL) 744 return dl; 745 746 dl->desc.type = DATALINK_DESCRIPTOR; 747 dl->desc.UpdateSet = datalink_UpdateSet; 748 dl->desc.IsSet = datalink_IsSet; 749 dl->desc.Read = datalink_Read; 750 dl->desc.Write = datalink_Write; 751 752 dl->state = DATALINK_CLOSED; 753 754 memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg); 755 mp_linkInit(&dl->mp); 756 *dl->phone.list = '\0'; 757 dl->phone.next = NULL; 758 dl->phone.alt = NULL; 759 dl->phone.chosen = "N/A"; 760 dl->bundle = odl->bundle; 761 dl->next = NULL; 762 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 763 dl->dial_tries = 0; 764 dl->reconnect_tries = 0; 765 dl->name = strdup(name); 766 peerid_Init(&dl->peer); 767 dl->parent = odl->parent; 768 memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp); 769 dl->fsmp.object = dl; 770 auth_Init(&dl->pap); 771 dl->pap.cfg.fsmretry = odl->pap.cfg.fsmretry; 772 773 auth_Init(&dl->chap.auth); 774 dl->chap.auth.cfg.fsmretry = odl->chap.auth.cfg.fsmretry; 775 776 if ((dl->physical = modem_Create(dl, PHYS_INTERACTIVE)) == NULL) { 777 free(dl->name); 778 free(dl); 779 return NULL; 780 } 781 memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg); 782 memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg, 783 sizeof dl->physical->link.lcp.cfg); 784 memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg, 785 sizeof dl->physical->link.ccp.cfg); 786 memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg, 787 sizeof dl->physical->async.cfg); 788 789 cbcp_Init(&dl->cbcp, dl->physical); 790 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 791 792 log_Printf(LogPHASE, "%s: Cloned in %s state\n", 793 dl->name, datalink_State(dl)); 794 795 return dl; 796 } 797 798 struct datalink * 799 datalink_Destroy(struct datalink *dl) 800 { 801 struct datalink *result; 802 803 if (dl->state != DATALINK_CLOSED) { 804 log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n", 805 datalink_State(dl)); 806 switch (dl->state) { 807 case DATALINK_HANGUP: 808 case DATALINK_DIAL: 809 case DATALINK_LOGIN: 810 chat_Destroy(&dl->chat); /* Gotta blat the timers ! */ 811 break; 812 } 813 } 814 815 timer_Stop(&dl->dial_timer); 816 result = dl->next; 817 modem_Destroy(dl->physical); 818 free(dl->name); 819 free(dl); 820 821 return result; 822 } 823 824 void 825 datalink_Up(struct datalink *dl, int runscripts, int packetmode) 826 { 827 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 828 /* Ignore scripts */ 829 runscripts = 0; 830 831 switch (dl->state) { 832 case DATALINK_CLOSED: 833 if (bundle_Phase(dl->bundle) == PHASE_DEAD || 834 bundle_Phase(dl->bundle) == PHASE_TERMINATE) 835 bundle_NewPhase(dl->bundle, PHASE_ESTABLISH); 836 datalink_NewState(dl, DATALINK_OPENING); 837 dl->reconnect_tries = 838 dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max; 839 dl->dial_tries = dl->cfg.dial.max; 840 dl->script.run = runscripts; 841 dl->script.packetmode = packetmode; 842 break; 843 844 case DATALINK_OPENING: 845 if (!dl->script.run && runscripts) 846 dl->script.run = 1; 847 /* fall through */ 848 849 case DATALINK_DIAL: 850 case DATALINK_LOGIN: 851 case DATALINK_READY: 852 if (!dl->script.packetmode && packetmode) { 853 dl->script.packetmode = 1; 854 if (dl->state == DATALINK_READY) 855 datalink_LoginDone(dl); 856 } 857 break; 858 } 859 } 860 861 void 862 datalink_Close(struct datalink *dl, int how) 863 { 864 /* Please close */ 865 switch (dl->state) { 866 case DATALINK_OPEN: 867 peerid_Init(&dl->peer); 868 fsm2initial(&dl->physical->link.ccp.fsm); 869 /* fall through */ 870 871 case DATALINK_CBCP: 872 case DATALINK_AUTH: 873 case DATALINK_LCP: 874 fsm_Close(&dl->physical->link.lcp.fsm); 875 if (how != CLOSE_NORMAL) { 876 dl->dial_tries = -1; 877 dl->reconnect_tries = 0; 878 if (how == CLOSE_LCP) 879 dl->stayonline = 1; 880 } 881 break; 882 883 default: 884 datalink_ComeDown(dl, how); 885 } 886 } 887 888 void 889 datalink_Down(struct datalink *dl, int how) 890 { 891 /* Carrier is lost */ 892 switch (dl->state) { 893 case DATALINK_OPEN: 894 peerid_Init(&dl->peer); 895 fsm2initial(&dl->physical->link.ccp.fsm); 896 /* fall through */ 897 898 case DATALINK_CBCP: 899 case DATALINK_AUTH: 900 case DATALINK_LCP: 901 fsm2initial(&dl->physical->link.lcp.fsm); 902 /* fall through */ 903 904 default: 905 datalink_ComeDown(dl, how); 906 } 907 } 908 909 void 910 datalink_StayDown(struct datalink *dl) 911 { 912 dl->reconnect_tries = 0; 913 } 914 915 void 916 datalink_DontHangup(struct datalink *dl) 917 { 918 if (dl->state >= DATALINK_LCP) 919 dl->stayonline = 1; 920 } 921 922 int 923 datalink_Show(struct cmdargs const *arg) 924 { 925 prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name); 926 prompt_Printf(arg->prompt, " State: %s\n", 927 datalink_State(arg->cx)); 928 prompt_Printf(arg->prompt, " CHAP Encryption: %s\n", 929 arg->cx->chap.using_MSChap ? "MSChap" : "MD5" ); 930 prompt_Printf(arg->prompt, " Peer name: "); 931 if (*arg->cx->peer.authname) 932 prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname); 933 else if (arg->cx->state == DATALINK_OPEN) 934 prompt_Printf(arg->prompt, "None requested\n"); 935 else 936 prompt_Printf(arg->prompt, "N/A\n"); 937 prompt_Printf(arg->prompt, " Discriminator: %s\n", 938 mp_Enddisc(arg->cx->peer.enddisc.class, 939 arg->cx->peer.enddisc.address, 940 arg->cx->peer.enddisc.len)); 941 942 prompt_Printf(arg->prompt, "\nDefaults:\n"); 943 prompt_Printf(arg->prompt, " Phone List: %s\n", 944 arg->cx->cfg.phone.list); 945 if (arg->cx->cfg.dial.max) 946 prompt_Printf(arg->prompt, " Dial tries: %d, delay ", 947 arg->cx->cfg.dial.max); 948 else 949 prompt_Printf(arg->prompt, " Dial tries: infinite, delay "); 950 if (arg->cx->cfg.dial.next_timeout > 0) 951 prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout); 952 else 953 prompt_Printf(arg->prompt, "random/"); 954 if (arg->cx->cfg.dial.timeout > 0) 955 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout); 956 else 957 prompt_Printf(arg->prompt, "random\n"); 958 prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ", 959 arg->cx->cfg.reconnect.max); 960 if (arg->cx->cfg.reconnect.timeout > 0) 961 prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout); 962 else 963 prompt_Printf(arg->prompt, "random\n"); 964 prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type == 965 PHYS_DIRECT ? "accepted: " : "requested:"); 966 if (!arg->cx->cfg.callback.opmask) 967 prompt_Printf(arg->prompt, "none\n"); 968 else { 969 int comma = 0; 970 971 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) { 972 prompt_Printf(arg->prompt, "none"); 973 comma = 1; 974 } 975 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) { 976 prompt_Printf(arg->prompt, "%sauth", comma ? ", " : ""); 977 comma = 1; 978 } 979 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) { 980 prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : ""); 981 if (arg->cx->physical->type != PHYS_DIRECT) 982 prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg); 983 comma = 1; 984 } 985 if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) { 986 prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : ""); 987 prompt_Printf(arg->prompt, " CBCP: delay: %ds\n", 988 arg->cx->cfg.cbcp.delay); 989 prompt_Printf(arg->prompt, " phone: "); 990 if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) { 991 if (arg->cx->physical->type & PHYS_DIRECT) 992 prompt_Printf(arg->prompt, "Caller decides\n"); 993 else 994 prompt_Printf(arg->prompt, "Dialback server decides\n"); 995 } else 996 prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone); 997 prompt_Printf(arg->prompt, " timeout: %lds\n", 998 arg->cx->cfg.cbcp.fsmretry); 999 } else 1000 prompt_Printf(arg->prompt, "\n"); 1001 } 1002 1003 prompt_Printf(arg->prompt, " Dial Script: %s\n", 1004 arg->cx->cfg.script.dial); 1005 prompt_Printf(arg->prompt, " Login Script: %s\n", 1006 arg->cx->cfg.script.login); 1007 prompt_Printf(arg->prompt, " Hangup Script: %s\n", 1008 arg->cx->cfg.script.hangup); 1009 return 0; 1010 } 1011 1012 int 1013 datalink_SetReconnect(struct cmdargs const *arg) 1014 { 1015 if (arg->argc == arg->argn+2) { 1016 arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]); 1017 arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]); 1018 return 0; 1019 } 1020 return -1; 1021 } 1022 1023 int 1024 datalink_SetRedial(struct cmdargs const *arg) 1025 { 1026 int timeout; 1027 int tries; 1028 char *dot; 1029 1030 if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) { 1031 if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 && 1032 (arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) { 1033 arg->cx->cfg.dial.timeout = -1; 1034 randinit(); 1035 } else { 1036 timeout = atoi(arg->argv[arg->argn]); 1037 1038 if (timeout >= 0) 1039 arg->cx->cfg.dial.timeout = timeout; 1040 else { 1041 log_Printf(LogWARN, "Invalid redial timeout\n"); 1042 return -1; 1043 } 1044 } 1045 1046 dot = strchr(arg->argv[arg->argn], '.'); 1047 if (dot) { 1048 if (strcasecmp(++dot, "random") == 0) { 1049 arg->cx->cfg.dial.next_timeout = -1; 1050 randinit(); 1051 } else { 1052 timeout = atoi(dot); 1053 if (timeout >= 0) 1054 arg->cx->cfg.dial.next_timeout = timeout; 1055 else { 1056 log_Printf(LogWARN, "Invalid next redial timeout\n"); 1057 return -1; 1058 } 1059 } 1060 } else 1061 /* Default next timeout */ 1062 arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT; 1063 1064 if (arg->argc == arg->argn+2) { 1065 tries = atoi(arg->argv[arg->argn+1]); 1066 1067 if (tries >= 0) { 1068 arg->cx->cfg.dial.max = tries; 1069 } else { 1070 log_Printf(LogWARN, "Invalid retry value\n"); 1071 return 1; 1072 } 1073 } 1074 return 0; 1075 } 1076 return -1; 1077 } 1078 1079 static const char *states[] = { 1080 "closed", 1081 "opening", 1082 "hangup", 1083 "dial", 1084 "login", 1085 "ready", 1086 "lcp", 1087 "auth", 1088 "cbcp", 1089 "open" 1090 }; 1091 1092 const char * 1093 datalink_State(struct datalink *dl) 1094 { 1095 if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0]) 1096 return "unknown"; 1097 return states[dl->state]; 1098 } 1099 1100 static void 1101 datalink_NewState(struct datalink *dl, int state) 1102 { 1103 if (state != dl->state) { 1104 if (state >= 0 && state < sizeof states / sizeof states[0]) { 1105 log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl), 1106 states[state]); 1107 dl->state = state; 1108 } else 1109 log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state); 1110 } 1111 } 1112 1113 struct datalink * 1114 iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov, 1115 int fd) 1116 { 1117 struct datalink *dl, *cdl; 1118 u_int retry; 1119 char *oname; 1120 1121 dl = (struct datalink *)iov[(*niov)++].iov_base; 1122 dl->name = iov[*niov].iov_base; 1123 1124 if (dl->name[DATALINK_MAXNAME-1]) { 1125 dl->name[DATALINK_MAXNAME-1] = '\0'; 1126 if (strlen(dl->name) == DATALINK_MAXNAME - 1) 1127 log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name); 1128 } 1129 1130 /* Make sure the name is unique ! */ 1131 oname = NULL; 1132 do { 1133 for (cdl = bundle->links; cdl; cdl = cdl->next) 1134 if (!strcasecmp(dl->name, cdl->name)) { 1135 if (oname) 1136 free(datalink_NextName(dl)); 1137 else 1138 oname = datalink_NextName(dl); 1139 break; /* Keep renaming 'till we have no conflicts */ 1140 } 1141 } while (cdl); 1142 1143 if (oname) { 1144 log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name); 1145 free(oname); 1146 } else { 1147 dl->name = strdup(dl->name); 1148 free(iov[*niov].iov_base); 1149 } 1150 (*niov)++; 1151 1152 dl->desc.type = DATALINK_DESCRIPTOR; 1153 dl->desc.UpdateSet = datalink_UpdateSet; 1154 dl->desc.IsSet = datalink_IsSet; 1155 dl->desc.Read = datalink_Read; 1156 dl->desc.Write = datalink_Write; 1157 1158 mp_linkInit(&dl->mp); 1159 *dl->phone.list = '\0'; 1160 dl->phone.next = NULL; 1161 dl->phone.alt = NULL; 1162 dl->phone.chosen = "N/A"; 1163 1164 dl->bundle = bundle; 1165 dl->next = NULL; 1166 memset(&dl->dial_timer, '\0', sizeof dl->dial_timer); 1167 dl->dial_tries = 0; 1168 dl->reconnect_tries = 0; 1169 dl->parent = &bundle->fsm; 1170 dl->fsmp.LayerStart = datalink_LayerStart; 1171 dl->fsmp.LayerUp = datalink_LayerUp; 1172 dl->fsmp.LayerDown = datalink_LayerDown; 1173 dl->fsmp.LayerFinish = datalink_LayerFinish; 1174 dl->fsmp.object = dl; 1175 1176 retry = dl->pap.cfg.fsmretry; 1177 auth_Init(&dl->pap); 1178 dl->pap.cfg.fsmretry = retry; 1179 1180 retry = dl->chap.auth.cfg.fsmretry; 1181 auth_Init(&dl->chap.auth); 1182 dl->chap.auth.cfg.fsmretry = retry; 1183 1184 dl->physical = iov2modem(dl, iov, niov, maxiov, fd); 1185 1186 if (!dl->physical) { 1187 free(dl->name); 1188 free(dl); 1189 dl = NULL; 1190 } else { 1191 cbcp_Init(&dl->cbcp, dl->physical); 1192 chat_Init(&dl->chat, dl->physical, NULL, 1, NULL); 1193 1194 log_Printf(LogPHASE, "%s: Transferred in %s state\n", 1195 dl->name, datalink_State(dl)); 1196 } 1197 1198 return dl; 1199 } 1200 1201 int 1202 datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 1203 pid_t newpid) 1204 { 1205 /* If `dl' is NULL, we're allocating before a Fromiov() */ 1206 int link_fd; 1207 1208 if (dl) { 1209 timer_Stop(&dl->dial_timer); 1210 /* The following is purely for the sake of paranoia */ 1211 cbcp_Down(&dl->cbcp); 1212 timer_Stop(&dl->pap.authtimer); 1213 timer_Stop(&dl->chap.auth.authtimer); 1214 } 1215 1216 if (*niov >= maxiov - 1) { 1217 log_Printf(LogERROR, "Toiov: No room for datalink !\n"); 1218 if (dl) { 1219 free(dl->name); 1220 free(dl); 1221 } 1222 return -1; 1223 } 1224 1225 iov[*niov].iov_base = dl ? dl : malloc(sizeof *dl); 1226 iov[(*niov)++].iov_len = sizeof *dl; 1227 iov[*niov].iov_base = 1228 dl ? realloc(dl->name, DATALINK_MAXNAME) : malloc(DATALINK_MAXNAME); 1229 iov[(*niov)++].iov_len = DATALINK_MAXNAME; 1230 1231 link_fd = modem2iov(dl ? dl->physical : NULL, iov, niov, maxiov, newpid); 1232 1233 if (link_fd == -1 && dl) { 1234 free(dl->name); 1235 free(dl); 1236 } 1237 1238 return link_fd; 1239 } 1240 1241 void 1242 datalink_Rename(struct datalink *dl, const char *name) 1243 { 1244 free(dl->name); 1245 dl->physical->link.name = dl->name = strdup(name); 1246 } 1247 1248 char * 1249 datalink_NextName(struct datalink *dl) 1250 { 1251 int f, n; 1252 char *name, *oname; 1253 1254 n = strlen(dl->name); 1255 name = (char *)malloc(n+3); 1256 for (f = n - 1; f >= 0; f--) 1257 if (!isdigit(dl->name[f])) 1258 break; 1259 n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); 1260 sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); 1261 oname = dl->name; 1262 dl->name = name; 1263 /* our physical link name isn't updated (it probably isn't created yet) */ 1264 return oname; 1265 } 1266 1267 int 1268 datalink_SetMode(struct datalink *dl, int mode) 1269 { 1270 if (!physical_SetMode(dl->physical, mode)) 1271 return 0; 1272 if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)) 1273 dl->script.run = 0; 1274 if (dl->physical->type == PHYS_DIRECT) 1275 dl->reconnect_tries = 0; 1276 if (mode & (PHYS_DDIAL|PHYS_BACKGROUND) && dl->state <= DATALINK_READY) 1277 datalink_Up(dl, 1, 1); 1278 return 1; 1279 } 1280