physical.c revision 52942
1/* 2 * Written by Eivind Eklund <eivind@yes.no> 3 * for Yes Interactive 4 * 5 * Copyright (C) 1998, Yes Interactive. All rights reserved. 6 * 7 * Redistribution and use in any form is permitted. Redistribution in 8 * source form should include the above copyright and this set of 9 * conditions, because large sections american law seems to have been 10 * created by a bunch of jerks on drugs that are now illegal, forcing 11 * me to include this copyright-stuff instead of placing this in the 12 * public domain. The name of of 'Yes Interactive' or 'Eivind Eklund' 13 * may not be used to endorse or promote products derived from this 14 * software without specific prior written permission. 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 18 * 19 * $FreeBSD: head/usr.sbin/ppp/physical.c 52942 1999-11-06 22:50:59Z brian $ 20 * 21 */ 22 23#include <sys/param.h> 24#include <netinet/in.h> 25#include <netinet/in_systm.h> 26#include <netinet/ip.h> 27#include <sys/un.h> 28 29#include <errno.h> 30#include <fcntl.h> 31#include <paths.h> 32#include <stdio.h> 33#include <stdlib.h> 34#include <string.h> 35#include <sys/tty.h> /* TIOCOUTQ */ 36#include <sys/uio.h> 37#include <time.h> 38#include <unistd.h> 39#include <utmp.h> 40#if defined(__OpenBSD__) || defined(__NetBSD__) 41#include <sys/ioctl.h> 42#include <util.h> 43#else 44#include <libutil.h> 45#endif 46 47#include "layer.h" 48#ifndef NONAT 49#include "nat_cmd.h" 50#endif 51#include "proto.h" 52#include "acf.h" 53#include "vjcomp.h" 54#include "defs.h" 55#include "command.h" 56#include "mbuf.h" 57#include "log.h" 58#include "id.h" 59#include "timer.h" 60#include "fsm.h" 61#include "lqr.h" 62#include "hdlc.h" 63#include "lcp.h" 64#include "throughput.h" 65#include "sync.h" 66#include "async.h" 67#include "iplist.h" 68#include "slcompress.h" 69#include "ipcp.h" 70#include "filter.h" 71#include "descriptor.h" 72#include "ccp.h" 73#include "link.h" 74#include "physical.h" 75#include "mp.h" 76#ifndef NORADIUS 77#include "radius.h" 78#endif 79#include "bundle.h" 80#include "prompt.h" 81#include "chat.h" 82#include "auth.h" 83#include "chap.h" 84#include "cbcp.h" 85#include "datalink.h" 86#include "tcp.h" 87#include "udp.h" 88#include "exec.h" 89#include "tty.h" 90#ifndef NOI4B 91#include "i4b.h" 92#endif 93#ifndef NONETGRAPH 94#include "ether.h" 95#endif 96 97 98#define PPPOTCPLINE "ppp" 99 100static int physical_DescriptorWrite(struct descriptor *, struct bundle *, 101 const fd_set *); 102 103static int 104physical_DeviceSize(void) 105{ 106 return sizeof(struct device); 107} 108 109struct { 110 struct device *(*create)(struct physical *); 111 struct device *(*iov2device)(int, struct physical *, struct iovec *, 112 int *, int, int *, int *); 113 int (*DeviceSize)(void); 114} devices[] = { 115#ifndef NOI4B 116 { i4b_Create, i4b_iov2device, i4b_DeviceSize }, 117#endif 118 { tty_Create, tty_iov2device, tty_DeviceSize }, 119#ifndef NONETGRAPH 120 /* This must come before ``udp'' & ``tcp'' */ 121 { ether_Create, ether_iov2device, ether_DeviceSize }, 122#endif 123 { tcp_Create, tcp_iov2device, tcp_DeviceSize }, 124 { udp_Create, udp_iov2device, udp_DeviceSize }, 125 { exec_Create, exec_iov2device, exec_DeviceSize } 126}; 127 128#define NDEVICES (sizeof devices / sizeof devices[0]) 129 130static int 131physical_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, 132 int *n) 133{ 134 return physical_doUpdateSet(d, r, w, e, n, 0); 135} 136 137void 138physical_SetDescriptor(struct physical *p) 139{ 140 p->desc.type = PHYSICAL_DESCRIPTOR; 141 p->desc.UpdateSet = physical_UpdateSet; 142 p->desc.IsSet = physical_IsSet; 143 p->desc.Read = physical_DescriptorRead; 144 p->desc.Write = physical_DescriptorWrite; 145} 146 147struct physical * 148physical_Create(struct datalink *dl, int type) 149{ 150 struct physical *p; 151 152 p = (struct physical *)malloc(sizeof(struct physical)); 153 if (!p) 154 return NULL; 155 156 p->link.type = PHYSICAL_LINK; 157 p->link.name = dl->name; 158 p->link.len = sizeof *p; 159 160 /* The sample period is fixed - see physical2iov() & iov2physical() */ 161 throughput_init(&p->link.throughput, SAMPLE_PERIOD); 162 163 memset(p->link.Queue, '\0', sizeof p->link.Queue); 164 memset(p->link.proto_in, '\0', sizeof p->link.proto_in); 165 memset(p->link.proto_out, '\0', sizeof p->link.proto_out); 166 link_EmptyStack(&p->link); 167 168 p->handler = NULL; 169 physical_SetDescriptor(p); 170 p->type = type; 171 172 hdlc_Init(&p->hdlc, &p->link.lcp); 173 async_Init(&p->async); 174 175 p->fd = -1; 176 p->out = NULL; 177 p->connect_count = 0; 178 p->dl = dl; 179 p->input.sz = 0; 180 *p->name.full = '\0'; 181 p->name.base = p->name.full; 182 183 p->Utmp = 0; 184 p->session_owner = (pid_t)-1; 185 186 p->cfg.rts_cts = MODEM_CTSRTS; 187 p->cfg.speed = MODEM_SPEED; 188 p->cfg.parity = CS8; 189 memcpy(p->cfg.devlist, MODEM_LIST, sizeof MODEM_LIST); 190 p->cfg.ndev = NMODEMS; 191 p->cfg.cd.necessity = CD_VARIABLE; 192 p->cfg.cd.delay = DEF_CDDELAY; 193 194 lcp_Init(&p->link.lcp, dl->bundle, &p->link, &dl->fsmp); 195 ccp_Init(&p->link.ccp, dl->bundle, &p->link, &dl->fsmp); 196 197 return p; 198} 199 200static const struct parity { 201 const char *name; 202 const char *name1; 203 int set; 204} validparity[] = { 205 { "even", "P_EVEN", CS7 | PARENB }, 206 { "odd", "P_ODD", CS7 | PARENB | PARODD }, 207 { "none", "P_ZERO", CS8 }, 208 { NULL, 0 }, 209}; 210 211static int 212GetParityValue(const char *str) 213{ 214 const struct parity *pp; 215 216 for (pp = validparity; pp->name; pp++) { 217 if (strcasecmp(pp->name, str) == 0 || 218 strcasecmp(pp->name1, str) == 0) { 219 return pp->set; 220 } 221 } 222 return (-1); 223} 224 225int 226physical_SetParity(struct physical *p, const char *str) 227{ 228 struct termios rstio; 229 int val; 230 231 val = GetParityValue(str); 232 if (val > 0) { 233 p->cfg.parity = val; 234 if (p->fd >= 0) { 235 tcgetattr(p->fd, &rstio); 236 rstio.c_cflag &= ~(CSIZE | PARODD | PARENB); 237 rstio.c_cflag |= val; 238 tcsetattr(p->fd, TCSADRAIN, &rstio); 239 } 240 return 0; 241 } 242 log_Printf(LogWARN, "%s: %s: Invalid parity\n", p->link.name, str); 243 return -1; 244} 245 246int 247physical_GetSpeed(struct physical *p) 248{ 249 if (p->handler && p->handler->speed) 250 return (*p->handler->speed)(p); 251 252 return 0; 253} 254 255int 256physical_SetSpeed(struct physical *p, int speed) 257{ 258 if (IntToSpeed(speed) != B0) { 259 p->cfg.speed = speed; 260 return 1; 261 } 262 263 return 0; 264} 265 266int 267physical_Raw(struct physical *p) 268{ 269 if (p->handler && p->handler->raw) 270 return (*p->handler->raw)(p); 271 272 return 1; 273} 274 275void 276physical_Offline(struct physical *p) 277{ 278 if (p->handler && p->handler->offline) 279 (*p->handler->offline)(p); 280 log_Printf(LogPHASE, "%s: Disconnected!\n", p->link.name); 281} 282 283static int 284physical_Lock(struct physical *p) 285{ 286 int res; 287 288 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 289 (res = ID0uu_lock(p->name.base)) != UU_LOCK_OK) { 290 if (res == UU_LOCK_INUSE) 291 log_Printf(LogPHASE, "%s: %s is in use\n", p->link.name, p->name.full); 292 else 293 log_Printf(LogPHASE, "%s: %s is in use: uu_lock: %s\n", 294 p->link.name, p->name.full, uu_lockerr(res)); 295 return 0; 296 } 297 298 return 1; 299} 300 301static void 302physical_Unlock(struct physical *p) 303{ 304 char fn[MAXPATHLEN]; 305 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 306 ID0uu_unlock(p->name.base) == -1) 307 log_Printf(LogALERT, "%s: Can't uu_unlock %s\n", p->link.name, fn); 308} 309 310void 311physical_Close(struct physical *p) 312{ 313 int newsid; 314 char fn[MAXPATHLEN]; 315 316 if (p->fd < 0) 317 return; 318 319 log_Printf(LogDEBUG, "%s: Close\n", p->link.name); 320 321 if (p->handler && p->handler->cooked) 322 (*p->handler->cooked)(p); 323 324 physical_StopDeviceTimer(p); 325 if (p->Utmp) { 326 if (p->handler && (p->handler->type == TCP_DEVICE || 327 p->handler->type == UDP_DEVICE)) 328 /* Careful - we logged in on line ``ppp'' with IP as our host */ 329 ID0logout(PPPOTCPLINE, 1); 330 else 331 ID0logout(p->name.base, 0); 332 p->Utmp = 0; 333 } 334 newsid = tcgetpgrp(p->fd) == getpgrp(); 335 close(p->fd); 336 p->fd = -1; 337 log_SetTtyCommandMode(p->dl); 338 339 throughput_stop(&p->link.throughput); 340 throughput_log(&p->link.throughput, LogPHASE, p->link.name); 341 342 if (p->session_owner != (pid_t)-1) { 343 ID0kill(p->session_owner, SIGHUP); 344 p->session_owner = (pid_t)-1; 345 } 346 347 if (newsid) 348 bundle_setsid(p->dl->bundle, 0); 349 350 if (*p->name.full == '/') { 351 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 352#ifndef RELEASE_CRUNCH 353 if (ID0unlink(fn) == -1) 354 log_Printf(LogALERT, "%s: Can't remove %s: %s\n", 355 p->link.name, fn, strerror(errno)); 356#else 357 ID0unlink(fn); 358#endif 359 } 360 physical_Unlock(p); 361 if (p->handler && p->handler->destroy) 362 (*p->handler->destroy)(p); 363 p->handler = NULL; 364 p->name.base = p->name.full; 365 *p->name.full = '\0'; 366} 367 368void 369physical_Destroy(struct physical *p) 370{ 371 physical_Close(p); 372 throughput_destroy(&p->link.throughput); 373 free(p); 374} 375 376static int 377physical_DescriptorWrite(struct descriptor *d, struct bundle *bundle, 378 const fd_set *fdset) 379{ 380 struct physical *p = descriptor2physical(d); 381 int nw, result = 0; 382 383 if (p->out == NULL) 384 p->out = link_Dequeue(&p->link); 385 386 if (p->out) { 387 nw = physical_Write(p, MBUF_CTOP(p->out), p->out->cnt); 388 log_Printf(LogDEBUG, "%s: DescriptorWrite: wrote %d(%d) to %d\n", 389 p->link.name, nw, p->out->cnt, p->fd); 390 if (nw > 0) { 391 p->out->cnt -= nw; 392 p->out->offset += nw; 393 if (p->out->cnt == 0) 394 p->out = mbuf_FreeSeg(p->out); 395 result = 1; 396 } else if (nw < 0) { 397 if (errno != EAGAIN) { 398 log_Printf(LogPHASE, "%s: write (%d): %s\n", p->link.name, 399 p->fd, strerror(errno)); 400 datalink_Down(p->dl, CLOSE_NORMAL); 401 } 402 result = 1; 403 } 404 /* else we shouldn't really have been called ! select() is broken ! */ 405 } 406 407 return result; 408} 409 410int 411physical_ShowStatus(struct cmdargs const *arg) 412{ 413 struct physical *p = arg->cx->physical; 414 const char *dev; 415 int n; 416 417 prompt_Printf(arg->prompt, "Name: %s\n", p->link.name); 418 prompt_Printf(arg->prompt, " State: "); 419 if (p->fd < 0) 420 prompt_Printf(arg->prompt, "closed\n"); 421 else if (p->handler && p->handler->openinfo) 422 prompt_Printf(arg->prompt, "open (%s)\n", (*p->handler->openinfo)(p)); 423 else 424 prompt_Printf(arg->prompt, "open\n"); 425 426 prompt_Printf(arg->prompt, " Device: %s", 427 *p->name.full ? p->name.full : 428 p->type == PHYS_DIRECT ? "unknown" : "N/A"); 429 if (p->session_owner != (pid_t)-1) 430 prompt_Printf(arg->prompt, " (session owner: %d)", (int)p->session_owner); 431 432 prompt_Printf(arg->prompt, "\n Link Type: %s\n", mode2Nam(p->type)); 433 prompt_Printf(arg->prompt, " Connect Count: %d\n", p->connect_count); 434#ifdef TIOCOUTQ 435 if (p->fd >= 0 && ioctl(p->fd, TIOCOUTQ, &n) >= 0) 436 prompt_Printf(arg->prompt, " Physical outq: %d\n", n); 437#endif 438 439 prompt_Printf(arg->prompt, " Queued Packets: %d\n", 440 link_QueueLen(&p->link)); 441 prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen); 442 443 prompt_Printf(arg->prompt, "\nDefaults:\n"); 444 445 prompt_Printf(arg->prompt, " Device List: "); 446 dev = p->cfg.devlist; 447 for (n = 0; n < p->cfg.ndev; n++) { 448 if (n) 449 prompt_Printf(arg->prompt, ", "); 450 prompt_Printf(arg->prompt, "\"%s\"", dev); 451 dev += strlen(dev) + 1; 452 } 453 454 prompt_Printf(arg->prompt, "\n Characteristics: "); 455 if (physical_IsSync(arg->cx->physical)) 456 prompt_Printf(arg->prompt, "sync"); 457 else 458 prompt_Printf(arg->prompt, "%dbps", p->cfg.speed); 459 460 switch (p->cfg.parity & CSIZE) { 461 case CS7: 462 prompt_Printf(arg->prompt, ", cs7"); 463 break; 464 case CS8: 465 prompt_Printf(arg->prompt, ", cs8"); 466 break; 467 } 468 if (p->cfg.parity & PARENB) { 469 if (p->cfg.parity & PARODD) 470 prompt_Printf(arg->prompt, ", odd parity"); 471 else 472 prompt_Printf(arg->prompt, ", even parity"); 473 } else 474 prompt_Printf(arg->prompt, ", no parity"); 475 476 prompt_Printf(arg->prompt, ", CTS/RTS %s\n", (p->cfg.rts_cts ? "on" : "off")); 477 478 prompt_Printf(arg->prompt, " CD check delay: "); 479 if (p->cfg.cd.necessity == CD_NOTREQUIRED) 480 prompt_Printf(arg->prompt, "no cd"); 481 else { 482 prompt_Printf(arg->prompt, "%d second%s", p->cfg.cd.delay, 483 p->cfg.cd.delay == 1 ? "" : "s"); 484 if (p->cfg.cd.necessity == CD_REQUIRED) 485 prompt_Printf(arg->prompt, " (required!)"); 486 } 487 prompt_Printf(arg->prompt, "\n\n"); 488 489 throughput_disp(&p->link.throughput, arg->prompt); 490 491 return 0; 492} 493 494void 495physical_DescriptorRead(struct descriptor *d, struct bundle *bundle, 496 const fd_set *fdset) 497{ 498 struct physical *p = descriptor2physical(d); 499 u_char *rbuff; 500 int n, found; 501 502 rbuff = p->input.buf + p->input.sz; 503 504 /* something to read */ 505 n = physical_Read(p, rbuff, sizeof p->input.buf - p->input.sz); 506 log_Printf(LogDEBUG, "%s: DescriptorRead: read %d/%d from %d\n", 507 p->link.name, n, (int)(sizeof p->input.buf - p->input.sz), p->fd); 508 if (n <= 0) { 509 if (n < 0) 510 log_Printf(LogPHASE, "%s: read (%d): %s\n", p->link.name, p->fd, 511 strerror(errno)); 512 else 513 log_Printf(LogPHASE, "%s: read (%d): Got zero bytes\n", 514 p->link.name, p->fd); 515 datalink_Down(p->dl, CLOSE_NORMAL); 516 return; 517 } 518 519 rbuff -= p->input.sz; 520 n += p->input.sz; 521 522 if (p->link.lcp.fsm.state <= ST_CLOSED) { 523 if (p->type != PHYS_DEDICATED) { 524 found = hdlc_Detect((u_char const **)&rbuff, n, physical_IsSync(p)); 525 if (rbuff != p->input.buf) 526 log_WritePrompts(p->dl, "%.*s", (int)(rbuff - p->input.buf), 527 p->input.buf); 528 p->input.sz = n - (rbuff - p->input.buf); 529 530 if (found) { 531 /* LCP packet is detected. Turn ourselves into packet mode */ 532 log_Printf(LogPHASE, "%s: PPP packet detected, coming up\n", 533 p->link.name); 534 log_SetTtyCommandMode(p->dl); 535 datalink_Up(p->dl, 0, 1); 536 link_PullPacket(&p->link, rbuff, p->input.sz, bundle); 537 p->input.sz = 0; 538 } else 539 bcopy(rbuff, p->input.buf, p->input.sz); 540 } else 541 /* In -dedicated mode, we just discard input until LCP is started */ 542 p->input.sz = 0; 543 } else if (n > 0) 544 link_PullPacket(&p->link, rbuff, n, bundle); 545} 546 547struct physical * 548iov2physical(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 549 int fd, int *auxfd, int *nauxfd) 550{ 551 struct physical *p; 552 int len, h, type; 553 554 p = (struct physical *)iov[(*niov)++].iov_base; 555 p->link.name = dl->name; 556 memset(p->link.Queue, '\0', sizeof p->link.Queue); 557 558 p->desc.UpdateSet = physical_UpdateSet; 559 p->desc.IsSet = physical_IsSet; 560 p->desc.Read = physical_DescriptorRead; 561 p->desc.Write = physical_DescriptorWrite; 562 p->type = PHYS_DIRECT; 563 p->dl = dl; 564 len = strlen(_PATH_DEV); 565 p->out = NULL; 566 p->connect_count = 1; 567 568 physical_SetDevice(p, p->name.full); 569 570 p->link.lcp.fsm.bundle = dl->bundle; 571 p->link.lcp.fsm.link = &p->link; 572 memset(&p->link.lcp.fsm.FsmTimer, '\0', sizeof p->link.lcp.fsm.FsmTimer); 573 memset(&p->link.lcp.fsm.OpenTimer, '\0', sizeof p->link.lcp.fsm.OpenTimer); 574 memset(&p->link.lcp.fsm.StoppedTimer, '\0', 575 sizeof p->link.lcp.fsm.StoppedTimer); 576 p->link.lcp.fsm.parent = &dl->fsmp; 577 lcp_SetupCallbacks(&p->link.lcp); 578 579 p->link.ccp.fsm.bundle = dl->bundle; 580 p->link.ccp.fsm.link = &p->link; 581 /* Our in.state & out.state are NULL (no link-level ccp yet) */ 582 memset(&p->link.ccp.fsm.FsmTimer, '\0', sizeof p->link.ccp.fsm.FsmTimer); 583 memset(&p->link.ccp.fsm.OpenTimer, '\0', sizeof p->link.ccp.fsm.OpenTimer); 584 memset(&p->link.ccp.fsm.StoppedTimer, '\0', 585 sizeof p->link.ccp.fsm.StoppedTimer); 586 p->link.ccp.fsm.parent = &dl->fsmp; 587 ccp_SetupCallbacks(&p->link.ccp); 588 589 p->hdlc.lqm.owner = &p->link.lcp; 590 p->hdlc.ReportTimer.state = TIMER_STOPPED; 591 p->hdlc.lqm.timer.state = TIMER_STOPPED; 592 593 p->fd = fd; 594 p->link.throughput.SampleOctets = (long long *)iov[(*niov)++].iov_base; 595 596 type = (long)p->handler; 597 p->handler = NULL; 598 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 599 p->handler = (*devices[h].iov2device)(type, p, iov, niov, maxiov, 600 auxfd, nauxfd); 601 if (p->handler == NULL) { 602 log_Printf(LogPHASE, "%s: Unknown link type\n", p->link.name); 603 free(iov[(*niov)++].iov_base); 604 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 605 } else 606 log_Printf(LogPHASE, "%s: Device %s, link type is %s\n", 607 p->link.name, p->name.full, p->handler->name); 608 609 if (p->hdlc.lqm.method && p->hdlc.lqm.timer.load) 610 lqr_reStart(&p->link.lcp); 611 hdlc_StartTimer(&p->hdlc); 612 613 throughput_restart(&p->link.throughput, "physical throughput", 614 Enabled(dl->bundle, OPT_THROUGHPUT)); 615 616 return p; 617} 618 619int 620physical_MaxDeviceSize() 621{ 622 int biggest, sz, n; 623 624 biggest = sizeof(struct device); 625 for (sz = n = 0; n < NDEVICES; n++) 626 if (devices[n].DeviceSize) { 627 sz = (*devices[n].DeviceSize)(); 628 if (biggest < sz) 629 biggest = sz; 630 } 631 632 return biggest; 633} 634 635int 636physical2iov(struct physical *p, struct iovec *iov, int *niov, int maxiov, 637 int *auxfd, int *nauxfd, pid_t newpid) 638{ 639 struct device *h; 640 int sz; 641 642 h = NULL; 643 if (p) { 644 hdlc_StopTimer(&p->hdlc); 645 lqr_StopTimer(p); 646 timer_Stop(&p->link.lcp.fsm.FsmTimer); 647 timer_Stop(&p->link.ccp.fsm.FsmTimer); 648 timer_Stop(&p->link.lcp.fsm.OpenTimer); 649 timer_Stop(&p->link.ccp.fsm.OpenTimer); 650 timer_Stop(&p->link.lcp.fsm.StoppedTimer); 651 timer_Stop(&p->link.ccp.fsm.StoppedTimer); 652 if (p->handler) { 653 if (p->handler->device2iov) 654 h = p->handler; 655 p->handler = (struct device *)(long)p->handler->type; 656 } 657 658 if (Enabled(p->dl->bundle, OPT_KEEPSESSION) || 659 tcgetpgrp(p->fd) == getpgrp()) 660 p->session_owner = getpid(); /* So I'll eventually get HUP'd */ 661 else 662 p->session_owner = (pid_t)-1; 663 timer_Stop(&p->link.throughput.Timer); 664 physical_ChangedPid(p, newpid); 665 } 666 667 if (*niov + 2 >= maxiov) { 668 log_Printf(LogERROR, "physical2iov: No room for physical + throughput" 669 " + device !\n"); 670 if (p) 671 free(p); 672 return -1; 673 } 674 675 iov[*niov].iov_base = p ? (void *)p : malloc(sizeof *p); 676 iov[*niov].iov_len = sizeof *p; 677 (*niov)++; 678 679 iov[*niov].iov_base = p ? (void *)p->link.throughput.SampleOctets : 680 malloc(SAMPLE_PERIOD * sizeof(long long)); 681 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 682 (*niov)++; 683 684 sz = physical_MaxDeviceSize(); 685 if (p) { 686 if (h) 687 (*h->device2iov)(h, iov, niov, maxiov, auxfd, nauxfd, newpid); 688 else { 689 iov[*niov].iov_base = malloc(sz); 690 if (p->handler) 691 memcpy(iov[*niov].iov_base, p->handler, sizeof *p->handler); 692 iov[*niov].iov_len = sz; 693 (*niov)++; 694 } 695 } else { 696 iov[*niov].iov_base = malloc(sz); 697 iov[*niov].iov_len = sz; 698 (*niov)++; 699 } 700 701 return p ? p->fd : 0; 702} 703 704void 705physical_ChangedPid(struct physical *p, pid_t newpid) 706{ 707 if (p->fd >= 0 && *p->name.full == '/' && p->type != PHYS_DIRECT) { 708 int res; 709 710 if ((res = ID0uu_lock_txfr(p->name.base, newpid)) != UU_LOCK_OK) 711 log_Printf(LogPHASE, "uu_lock_txfr: %s\n", uu_lockerr(res)); 712 } 713} 714 715int 716physical_IsSync(struct physical *p) 717{ 718 return p->cfg.speed == 0; 719} 720 721const char *physical_GetDevice(struct physical *p) 722{ 723 return p->name.full; 724} 725 726void 727physical_SetDeviceList(struct physical *p, int argc, const char *const *argv) 728{ 729 int f, pos; 730 731 p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0'; 732 for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) { 733 if (pos) 734 p->cfg.devlist[pos++] = '\0'; 735 strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1); 736 pos += strlen(p->cfg.devlist + pos); 737 } 738 p->cfg.ndev = f; 739} 740 741void 742physical_SetSync(struct physical *p) 743{ 744 p->cfg.speed = 0; 745} 746 747int 748physical_SetRtsCts(struct physical *p, int enable) 749{ 750 p->cfg.rts_cts = enable ? 1 : 0; 751 return 1; 752} 753 754ssize_t 755physical_Read(struct physical *p, void *buf, size_t nbytes) 756{ 757 ssize_t ret; 758 759 if (p->handler && p->handler->read) 760 ret = (*p->handler->read)(p, buf, nbytes); 761 else 762 ret = read(p->fd, buf, nbytes); 763 764 log_DumpBuff(LogPHYSICAL, "read", buf, ret); 765 766 return ret; 767} 768 769ssize_t 770physical_Write(struct physical *p, const void *buf, size_t nbytes) 771{ 772 log_DumpBuff(LogPHYSICAL, "write", buf, nbytes); 773 774 if (p->handler && p->handler->write) 775 return (*p->handler->write)(p, buf, nbytes); 776 777 return write(p->fd, buf, nbytes); 778} 779 780int 781physical_doUpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, 782 int *n, int force) 783{ 784 struct physical *p = descriptor2physical(d); 785 int sets; 786 787 sets = 0; 788 if (p->fd >= 0) { 789 if (r) { 790 FD_SET(p->fd, r); 791 log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd); 792 sets++; 793 } 794 if (e) { 795 FD_SET(p->fd, e); 796 log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd); 797 sets++; 798 } 799 if (w && (force || link_QueueLen(&p->link) || p->out)) { 800 FD_SET(p->fd, w); 801 log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd); 802 sets++; 803 } 804 if (sets && *n < p->fd + 1) 805 *n = p->fd + 1; 806 } 807 808 return sets; 809} 810 811int 812physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 813{ 814 if (p->handler && p->handler->removefromset) 815 return (*p->handler->removefromset)(p, r, w, e); 816 else { 817 int sets; 818 819 sets = 0; 820 if (p->fd >= 0) { 821 if (r && FD_ISSET(p->fd, r)) { 822 FD_CLR(p->fd, r); 823 log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd); 824 sets++; 825 } 826 if (e && FD_ISSET(p->fd, e)) { 827 FD_CLR(p->fd, e); 828 log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd); 829 sets++; 830 } 831 if (w && FD_ISSET(p->fd, w)) { 832 FD_CLR(p->fd, w); 833 log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd); 834 sets++; 835 } 836 } 837 838 return sets; 839 } 840} 841 842int 843physical_IsSet(struct descriptor *d, const fd_set *fdset) 844{ 845 struct physical *p = descriptor2physical(d); 846 return p->fd >= 0 && FD_ISSET(p->fd, fdset); 847} 848 849void 850physical_Login(struct physical *p, const char *name) 851{ 852 if (p->type == PHYS_DIRECT && *p->name.base && !p->Utmp) { 853 struct utmp ut; 854 const char *connstr; 855 char *colon; 856 857 memset(&ut, 0, sizeof ut); 858 time(&ut.ut_time); 859 strncpy(ut.ut_name, name, sizeof ut.ut_name); 860 if (p->handler && (p->handler->type == TCP_DEVICE || 861 p->handler->type == UDP_DEVICE)) { 862 strncpy(ut.ut_line, PPPOTCPLINE, sizeof ut.ut_line); 863 strncpy(ut.ut_host, p->name.base, sizeof ut.ut_host); 864 colon = memchr(ut.ut_host, ':', sizeof ut.ut_host); 865 if (colon) 866 *colon = '\0'; 867 } else 868 strncpy(ut.ut_line, p->name.base, sizeof ut.ut_line); 869 if ((connstr = getenv("CONNECT"))) 870 /* mgetty sets this to the connection speed */ 871 strncpy(ut.ut_host, connstr, sizeof ut.ut_host); 872 ID0login(&ut); 873 p->Utmp = ut.ut_time; 874 } 875} 876 877int 878physical_SetMode(struct physical *p, int mode) 879{ 880 if ((p->type & (PHYS_DIRECT|PHYS_DEDICATED) || 881 mode & (PHYS_DIRECT|PHYS_DEDICATED)) && 882 (!(p->type & PHYS_DIRECT) || !(mode & PHYS_BACKGROUND))) { 883 log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name, 884 mode2Nam(p->type), mode2Nam(mode)); 885 return 0; 886 } 887 p->type = mode; 888 return 1; 889} 890 891void 892physical_DeleteQueue(struct physical *p) 893{ 894 if (p->out) { 895 mbuf_Free(p->out); 896 p->out = NULL; 897 } 898 link_DeleteQueue(&p->link); 899} 900 901void 902physical_SetDevice(struct physical *p, const char *name) 903{ 904 int len = strlen(_PATH_DEV); 905 906 if (name != p->name.full) { 907 strncpy(p->name.full, name, sizeof p->name.full - 1); 908 p->name.full[sizeof p->name.full - 1] = '\0'; 909 } 910 p->name.base = *p->name.full == '!' ? p->name.full + 1 : 911 strncmp(p->name.full, _PATH_DEV, len) ? 912 p->name.full : p->name.full + len; 913} 914 915static void 916physical_Found(struct physical *p) 917{ 918 FILE *lockfile; 919 char fn[MAXPATHLEN]; 920 921 if (*p->name.full == '/') { 922 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 923 lockfile = ID0fopen(fn, "w"); 924 if (lockfile != NULL) { 925 fprintf(lockfile, "%s%d\n", TUN_NAME, p->dl->bundle->unit); 926 fclose(lockfile); 927 } 928#ifndef RELEASE_CRUNCH 929 else 930 log_Printf(LogALERT, "%s: Can't create %s: %s\n", 931 p->link.name, fn, strerror(errno)); 932#endif 933 } 934 935 throughput_start(&p->link.throughput, "physical throughput", 936 Enabled(p->dl->bundle, OPT_THROUGHPUT)); 937 p->connect_count++; 938 p->input.sz = 0; 939 940 log_Printf(LogPHASE, "%s: Connected!\n", p->link.name); 941} 942 943int 944physical_Open(struct physical *p, struct bundle *bundle) 945{ 946 int devno, h, wasfd, err; 947 char *dev; 948 949 if (p->fd >= 0) 950 log_Printf(LogDEBUG, "%s: Open: Modem is already open!\n", p->link.name); 951 /* We're going back into "term" mode */ 952 else if (p->type == PHYS_DIRECT) { 953 physical_SetDevice(p, ""); 954 p->fd = STDIN_FILENO; 955 for (h = 0; h < NDEVICES && p->handler == NULL && p->fd >= 0; h++) 956 p->handler = (*devices[h].create)(p); 957 if (p->fd >= 0) { 958 if (p->handler == NULL) { 959 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 960 log_Printf(LogDEBUG, "%s: stdin is unidentified\n", p->link.name); 961 } 962 physical_Found(p); 963 } 964 } else { 965 dev = p->cfg.devlist; 966 devno = 0; 967 while (devno < p->cfg.ndev && p->fd < 0) { 968 physical_SetDevice(p, dev); 969 if (physical_Lock(p)) { 970 err = 0; 971 972 if (*p->name.full == '/') { 973 p->fd = ID0open(p->name.full, O_RDWR | O_NONBLOCK); 974 if (p->fd < 0) 975 err = errno; 976 } 977 978 wasfd = p->fd; 979 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 980 if ((p->handler = (*devices[h].create)(p)) == NULL && wasfd != p->fd) 981 break; 982 983 if (p->fd < 0) { 984 if (h == NDEVICES) { 985 if (err) 986 log_Printf(LogWARN, "%s: %s: %s\n", p->link.name, p->name.full, 987 strerror(errno)); 988 else 989 log_Printf(LogWARN, "%s: Device (%s) must begin with a '/'," 990 " a '!' or contain at least one ':'\n", p->link.name, 991 p->name.full); 992 } 993 physical_Unlock(p); 994 } else 995 physical_Found(p); 996 } 997 dev += strlen(dev) + 1; 998 devno++; 999 } 1000 } 1001 1002 return p->fd; 1003} 1004 1005void 1006physical_SetupStack(struct physical *p, const char *who, int how) 1007{ 1008 link_EmptyStack(&p->link); 1009 if (how == PHYSICAL_FORCE_SYNC || how == PHYSICAL_FORCE_SYNCNOACF || 1010 (how == PHYSICAL_NOFORCE && physical_IsSync(p))) 1011 link_Stack(&p->link, &synclayer); 1012 else { 1013 link_Stack(&p->link, &asynclayer); 1014 link_Stack(&p->link, &hdlclayer); 1015 } 1016 if (how != PHYSICAL_FORCE_SYNCNOACF) 1017 link_Stack(&p->link, &acflayer); 1018 link_Stack(&p->link, &protolayer); 1019 link_Stack(&p->link, &lqrlayer); 1020 link_Stack(&p->link, &ccplayer); 1021 link_Stack(&p->link, &vjlayer); 1022#ifndef NONAT 1023 link_Stack(&p->link, &natlayer); 1024#endif 1025 if (how == PHYSICAL_FORCE_ASYNC && physical_IsSync(p)) { 1026 log_Printf(LogWARN, "Sync device setting ignored for ``%s'' device\n", who); 1027 p->cfg.speed = MODEM_SPEED; 1028 } else if (how == PHYSICAL_FORCE_SYNC && !physical_IsSync(p)) { 1029 log_Printf(LogWARN, "Async device setting ignored for ``%s'' device\n", 1030 who); 1031 physical_SetSync(p); 1032 } 1033} 1034 1035void 1036physical_StopDeviceTimer(struct physical *p) 1037{ 1038 if (p->handler && p->handler->stoptimer) 1039 (*p->handler->stoptimer)(p); 1040} 1041 1042int 1043physical_AwaitCarrier(struct physical *p) 1044{ 1045 if (p->handler && p->handler->awaitcarrier) 1046 return (*p->handler->awaitcarrier)(p); 1047 1048 return CARRIER_OK; 1049} 1050