physical.c revision 58028
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 58028 2000-03-14 01:46:09Z 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 fdescriptor *, 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 fdescriptor *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_DEFAULT; 192 p->cfg.cd.delay = 0; /* reconfigured or device specific default */ 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 fdescriptor *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->m_len); 388 log_Printf(LogDEBUG, "%s: DescriptorWrite: wrote %d(%d) to %d\n", 389 p->link.name, nw, p->out->m_len, p->fd); 390 if (nw > 0) { 391 p->out->m_len -= nw; 392 p->out->m_offset += nw; 393 if (p->out->m_len == 0) 394 p->out = m_free(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 struct cd *cd; 415 const char *dev; 416 int n; 417 418 prompt_Printf(arg->prompt, "Name: %s\n", p->link.name); 419 prompt_Printf(arg->prompt, " State: "); 420 if (p->fd < 0) 421 prompt_Printf(arg->prompt, "closed\n"); 422 else if (p->handler && p->handler->openinfo) 423 prompt_Printf(arg->prompt, "open (%s)\n", (*p->handler->openinfo)(p)); 424 else 425 prompt_Printf(arg->prompt, "open\n"); 426 427 prompt_Printf(arg->prompt, " Device: %s", 428 *p->name.full ? p->name.full : 429 p->type == PHYS_DIRECT ? "unknown" : "N/A"); 430 if (p->session_owner != (pid_t)-1) 431 prompt_Printf(arg->prompt, " (session owner: %d)", (int)p->session_owner); 432 433 prompt_Printf(arg->prompt, "\n Link Type: %s\n", mode2Nam(p->type)); 434 prompt_Printf(arg->prompt, " Connect Count: %d\n", p->connect_count); 435#ifdef TIOCOUTQ 436 if (p->fd >= 0 && ioctl(p->fd, TIOCOUTQ, &n) >= 0) 437 prompt_Printf(arg->prompt, " Physical outq: %d\n", n); 438#endif 439 440 prompt_Printf(arg->prompt, " Queued Packets: %lu\n", 441 (u_long)link_QueueLen(&p->link)); 442 prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen); 443 444 prompt_Printf(arg->prompt, "\nDefaults:\n"); 445 446 prompt_Printf(arg->prompt, " Device List: "); 447 dev = p->cfg.devlist; 448 for (n = 0; n < p->cfg.ndev; n++) { 449 if (n) 450 prompt_Printf(arg->prompt, ", "); 451 prompt_Printf(arg->prompt, "\"%s\"", dev); 452 dev += strlen(dev) + 1; 453 } 454 455 prompt_Printf(arg->prompt, "\n Characteristics: "); 456 if (physical_IsSync(arg->cx->physical)) 457 prompt_Printf(arg->prompt, "sync"); 458 else 459 prompt_Printf(arg->prompt, "%dbps", p->cfg.speed); 460 461 switch (p->cfg.parity & CSIZE) { 462 case CS7: 463 prompt_Printf(arg->prompt, ", cs7"); 464 break; 465 case CS8: 466 prompt_Printf(arg->prompt, ", cs8"); 467 break; 468 } 469 if (p->cfg.parity & PARENB) { 470 if (p->cfg.parity & PARODD) 471 prompt_Printf(arg->prompt, ", odd parity"); 472 else 473 prompt_Printf(arg->prompt, ", even parity"); 474 } else 475 prompt_Printf(arg->prompt, ", no parity"); 476 477 prompt_Printf(arg->prompt, ", CTS/RTS %s\n", (p->cfg.rts_cts ? "on" : "off")); 478 479 prompt_Printf(arg->prompt, " CD check delay: "); 480 cd = p->handler ? &p->handler->cd : &p->cfg.cd; 481 if (cd->necessity == CD_NOTREQUIRED) 482 prompt_Printf(arg->prompt, "no cd"); 483 else if (p->cfg.cd.necessity == CD_DEFAULT) { 484 prompt_Printf(arg->prompt, "device specific"); 485 } else { 486 prompt_Printf(arg->prompt, "%d second%s", p->cfg.cd.delay, 487 p->cfg.cd.delay == 1 ? "" : "s"); 488 if (p->cfg.cd.necessity == CD_REQUIRED) 489 prompt_Printf(arg->prompt, " (required!)"); 490 } 491 prompt_Printf(arg->prompt, "\n\n"); 492 493 throughput_disp(&p->link.throughput, arg->prompt); 494 495 return 0; 496} 497 498void 499physical_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 500 const fd_set *fdset) 501{ 502 struct physical *p = descriptor2physical(d); 503 u_char *rbuff; 504 int n, found; 505 506 rbuff = p->input.buf + p->input.sz; 507 508 /* something to read */ 509 n = physical_Read(p, rbuff, sizeof p->input.buf - p->input.sz); 510 log_Printf(LogDEBUG, "%s: DescriptorRead: read %d/%d from %d\n", 511 p->link.name, n, (int)(sizeof p->input.buf - p->input.sz), p->fd); 512 if (n <= 0) { 513 if (n < 0) 514 log_Printf(LogPHASE, "%s: read (%d): %s\n", p->link.name, p->fd, 515 strerror(errno)); 516 else 517 log_Printf(LogPHASE, "%s: read (%d): Got zero bytes\n", 518 p->link.name, p->fd); 519 datalink_Down(p->dl, CLOSE_NORMAL); 520 return; 521 } 522 523 rbuff -= p->input.sz; 524 n += p->input.sz; 525 526 if (p->link.lcp.fsm.state <= ST_CLOSED) { 527 if (p->type != PHYS_DEDICATED) { 528 found = hdlc_Detect((u_char const **)&rbuff, n, physical_IsSync(p)); 529 if (rbuff != p->input.buf) 530 log_WritePrompts(p->dl, "%.*s", (int)(rbuff - p->input.buf), 531 p->input.buf); 532 p->input.sz = n - (rbuff - p->input.buf); 533 534 if (found) { 535 /* LCP packet is detected. Turn ourselves into packet mode */ 536 log_Printf(LogPHASE, "%s: PPP packet detected, coming up\n", 537 p->link.name); 538 log_SetTtyCommandMode(p->dl); 539 datalink_Up(p->dl, 0, 1); 540 link_PullPacket(&p->link, rbuff, p->input.sz, bundle); 541 p->input.sz = 0; 542 } else 543 bcopy(rbuff, p->input.buf, p->input.sz); 544 } else 545 /* In -dedicated mode, we just discard input until LCP is started */ 546 p->input.sz = 0; 547 } else if (n > 0) 548 link_PullPacket(&p->link, rbuff, n, bundle); 549} 550 551struct physical * 552iov2physical(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 553 int fd, int *auxfd, int *nauxfd) 554{ 555 struct physical *p; 556 int len, h, type; 557 558 p = (struct physical *)iov[(*niov)++].iov_base; 559 p->link.name = dl->name; 560 memset(p->link.Queue, '\0', sizeof p->link.Queue); 561 562 p->desc.UpdateSet = physical_UpdateSet; 563 p->desc.IsSet = physical_IsSet; 564 p->desc.Read = physical_DescriptorRead; 565 p->desc.Write = physical_DescriptorWrite; 566 p->type = PHYS_DIRECT; 567 p->dl = dl; 568 len = strlen(_PATH_DEV); 569 p->out = NULL; 570 p->connect_count = 1; 571 572 physical_SetDevice(p, p->name.full); 573 574 p->link.lcp.fsm.bundle = dl->bundle; 575 p->link.lcp.fsm.link = &p->link; 576 memset(&p->link.lcp.fsm.FsmTimer, '\0', sizeof p->link.lcp.fsm.FsmTimer); 577 memset(&p->link.lcp.fsm.OpenTimer, '\0', sizeof p->link.lcp.fsm.OpenTimer); 578 memset(&p->link.lcp.fsm.StoppedTimer, '\0', 579 sizeof p->link.lcp.fsm.StoppedTimer); 580 p->link.lcp.fsm.parent = &dl->fsmp; 581 lcp_SetupCallbacks(&p->link.lcp); 582 583 p->link.ccp.fsm.bundle = dl->bundle; 584 p->link.ccp.fsm.link = &p->link; 585 /* Our in.state & out.state are NULL (no link-level ccp yet) */ 586 memset(&p->link.ccp.fsm.FsmTimer, '\0', sizeof p->link.ccp.fsm.FsmTimer); 587 memset(&p->link.ccp.fsm.OpenTimer, '\0', sizeof p->link.ccp.fsm.OpenTimer); 588 memset(&p->link.ccp.fsm.StoppedTimer, '\0', 589 sizeof p->link.ccp.fsm.StoppedTimer); 590 p->link.ccp.fsm.parent = &dl->fsmp; 591 ccp_SetupCallbacks(&p->link.ccp); 592 593 p->hdlc.lqm.owner = &p->link.lcp; 594 p->hdlc.ReportTimer.state = TIMER_STOPPED; 595 p->hdlc.lqm.timer.state = TIMER_STOPPED; 596 597 p->fd = fd; 598 p->link.throughput.SampleOctets = (long long *)iov[(*niov)++].iov_base; 599 600 type = (long)p->handler; 601 p->handler = NULL; 602 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 603 p->handler = (*devices[h].iov2device)(type, p, iov, niov, maxiov, 604 auxfd, nauxfd); 605 if (p->handler == NULL) { 606 log_Printf(LogPHASE, "%s: Unknown link type\n", p->link.name); 607 free(iov[(*niov)++].iov_base); 608 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 609 } else 610 log_Printf(LogPHASE, "%s: Device %s, link type is %s\n", 611 p->link.name, p->name.full, p->handler->name); 612 613 if (p->hdlc.lqm.method && p->hdlc.lqm.timer.load) 614 lqr_reStart(&p->link.lcp); 615 hdlc_StartTimer(&p->hdlc); 616 617 throughput_restart(&p->link.throughput, "physical throughput", 618 Enabled(dl->bundle, OPT_THROUGHPUT)); 619 620 return p; 621} 622 623int 624physical_MaxDeviceSize() 625{ 626 int biggest, sz, n; 627 628 biggest = sizeof(struct device); 629 for (sz = n = 0; n < NDEVICES; n++) 630 if (devices[n].DeviceSize) { 631 sz = (*devices[n].DeviceSize)(); 632 if (biggest < sz) 633 biggest = sz; 634 } 635 636 return biggest; 637} 638 639int 640physical2iov(struct physical *p, struct iovec *iov, int *niov, int maxiov, 641 int *auxfd, int *nauxfd) 642{ 643 struct device *h; 644 int sz; 645 646 h = NULL; 647 if (p) { 648 hdlc_StopTimer(&p->hdlc); 649 lqr_StopTimer(p); 650 timer_Stop(&p->link.lcp.fsm.FsmTimer); 651 timer_Stop(&p->link.ccp.fsm.FsmTimer); 652 timer_Stop(&p->link.lcp.fsm.OpenTimer); 653 timer_Stop(&p->link.ccp.fsm.OpenTimer); 654 timer_Stop(&p->link.lcp.fsm.StoppedTimer); 655 timer_Stop(&p->link.ccp.fsm.StoppedTimer); 656 if (p->handler) { 657 h = p->handler; 658 p->handler = (struct device *)(long)p->handler->type; 659 } 660 661 if (Enabled(p->dl->bundle, OPT_KEEPSESSION) || 662 tcgetpgrp(p->fd) == getpgrp()) 663 p->session_owner = getpid(); /* So I'll eventually get HUP'd */ 664 else 665 p->session_owner = (pid_t)-1; 666 timer_Stop(&p->link.throughput.Timer); 667 } 668 669 if (*niov + 2 >= maxiov) { 670 log_Printf(LogERROR, "physical2iov: No room for physical + throughput" 671 " + device !\n"); 672 if (p) 673 free(p); 674 return -1; 675 } 676 677 iov[*niov].iov_base = (void *)p; 678 iov[*niov].iov_len = sizeof *p; 679 (*niov)++; 680 681 iov[*niov].iov_base = p ? (void *)p->link.throughput.SampleOctets : NULL; 682 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 683 (*niov)++; 684 685 sz = physical_MaxDeviceSize(); 686 if (p) { 687 if (h && h->device2iov) 688 (*h->device2iov)(h, iov, niov, maxiov, auxfd, nauxfd); 689 else { 690 iov[*niov].iov_base = malloc(sz); 691 if (h) 692 memcpy(iov[*niov].iov_base, h, sizeof *h); 693 iov[*niov].iov_len = sz; 694 (*niov)++; 695 } 696 } else { 697 iov[*niov].iov_base = NULL; 698 iov[*niov].iov_len = sz; 699 (*niov)++; 700 } 701 702 return p ? p->fd : 0; 703} 704 705const char * 706physical_LockedDevice(struct physical *p) 707{ 708 if (p->fd >= 0 && *p->name.full == '/' && p->type != PHYS_DIRECT) 709 return p->name.base; 710 711 return NULL; 712} 713 714void 715physical_ChangedPid(struct physical *p, pid_t newpid) 716{ 717 if (physical_LockedDevice(p)) { 718 int res; 719 720 if ((res = ID0uu_lock_txfr(p->name.base, newpid)) != UU_LOCK_OK) 721 log_Printf(LogPHASE, "uu_lock_txfr: %s\n", uu_lockerr(res)); 722 } 723} 724 725int 726physical_IsSync(struct physical *p) 727{ 728 return p->cfg.speed == 0; 729} 730 731const char *physical_GetDevice(struct physical *p) 732{ 733 return p->name.full; 734} 735 736void 737physical_SetDeviceList(struct physical *p, int argc, const char *const *argv) 738{ 739 int f, pos; 740 741 p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0'; 742 for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) { 743 if (pos) 744 p->cfg.devlist[pos++] = '\0'; 745 strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1); 746 pos += strlen(p->cfg.devlist + pos); 747 } 748 p->cfg.ndev = f; 749} 750 751void 752physical_SetSync(struct physical *p) 753{ 754 p->cfg.speed = 0; 755} 756 757int 758physical_SetRtsCts(struct physical *p, int enable) 759{ 760 p->cfg.rts_cts = enable ? 1 : 0; 761 return 1; 762} 763 764ssize_t 765physical_Read(struct physical *p, void *buf, size_t nbytes) 766{ 767 ssize_t ret; 768 769 if (p->handler && p->handler->read) 770 ret = (*p->handler->read)(p, buf, nbytes); 771 else 772 ret = read(p->fd, buf, nbytes); 773 774 log_DumpBuff(LogPHYSICAL, "read", buf, ret); 775 776 return ret; 777} 778 779ssize_t 780physical_Write(struct physical *p, const void *buf, size_t nbytes) 781{ 782 log_DumpBuff(LogPHYSICAL, "write", buf, nbytes); 783 784 if (p->handler && p->handler->write) 785 return (*p->handler->write)(p, buf, nbytes); 786 787 return write(p->fd, buf, nbytes); 788} 789 790int 791physical_doUpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 792 int *n, int force) 793{ 794 struct physical *p = descriptor2physical(d); 795 int sets; 796 797 sets = 0; 798 if (p->fd >= 0) { 799 if (r) { 800 FD_SET(p->fd, r); 801 log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd); 802 sets++; 803 } 804 if (e) { 805 FD_SET(p->fd, e); 806 log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd); 807 sets++; 808 } 809 if (w && (force || link_QueueLen(&p->link) || p->out)) { 810 FD_SET(p->fd, w); 811 log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd); 812 sets++; 813 } 814 if (sets && *n < p->fd + 1) 815 *n = p->fd + 1; 816 } 817 818 return sets; 819} 820 821int 822physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 823{ 824 if (p->handler && p->handler->removefromset) 825 return (*p->handler->removefromset)(p, r, w, e); 826 else { 827 int sets; 828 829 sets = 0; 830 if (p->fd >= 0) { 831 if (r && FD_ISSET(p->fd, r)) { 832 FD_CLR(p->fd, r); 833 log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd); 834 sets++; 835 } 836 if (e && FD_ISSET(p->fd, e)) { 837 FD_CLR(p->fd, e); 838 log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd); 839 sets++; 840 } 841 if (w && FD_ISSET(p->fd, w)) { 842 FD_CLR(p->fd, w); 843 log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd); 844 sets++; 845 } 846 } 847 848 return sets; 849 } 850} 851 852int 853physical_IsSet(struct fdescriptor *d, const fd_set *fdset) 854{ 855 struct physical *p = descriptor2physical(d); 856 return p->fd >= 0 && FD_ISSET(p->fd, fdset); 857} 858 859void 860physical_Login(struct physical *p, const char *name) 861{ 862 if (p->type == PHYS_DIRECT && *p->name.base && !p->Utmp) { 863 struct utmp ut; 864 const char *connstr; 865 char *colon; 866 867 memset(&ut, 0, sizeof ut); 868 time(&ut.ut_time); 869 strncpy(ut.ut_name, name, sizeof ut.ut_name); 870 if (p->handler && (p->handler->type == TCP_DEVICE || 871 p->handler->type == UDP_DEVICE)) { 872 strncpy(ut.ut_line, PPPOTCPLINE, sizeof ut.ut_line); 873 strncpy(ut.ut_host, p->name.base, sizeof ut.ut_host); 874 colon = memchr(ut.ut_host, ':', sizeof ut.ut_host); 875 if (colon) 876 *colon = '\0'; 877 } else 878 strncpy(ut.ut_line, p->name.base, sizeof ut.ut_line); 879 if ((connstr = getenv("CONNECT"))) 880 /* mgetty sets this to the connection speed */ 881 strncpy(ut.ut_host, connstr, sizeof ut.ut_host); 882 ID0login(&ut); 883 p->Utmp = ut.ut_time; 884 } 885} 886 887int 888physical_SetMode(struct physical *p, int mode) 889{ 890 if ((p->type & (PHYS_DIRECT|PHYS_DEDICATED) || 891 mode & (PHYS_DIRECT|PHYS_DEDICATED)) && 892 (!(p->type & PHYS_DIRECT) || !(mode & PHYS_BACKGROUND))) { 893 /* Note: The -direct -> -background is for callback ! */ 894 log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name, 895 mode2Nam(p->type), mode2Nam(mode)); 896 return 0; 897 } 898 p->type = mode; 899 return 1; 900} 901 902void 903physical_DeleteQueue(struct physical *p) 904{ 905 if (p->out) { 906 m_freem(p->out); 907 p->out = NULL; 908 } 909 link_DeleteQueue(&p->link); 910} 911 912void 913physical_SetDevice(struct physical *p, const char *name) 914{ 915 int len = strlen(_PATH_DEV); 916 917 if (name != p->name.full) { 918 strncpy(p->name.full, name, sizeof p->name.full - 1); 919 p->name.full[sizeof p->name.full - 1] = '\0'; 920 } 921 p->name.base = *p->name.full == '!' ? p->name.full + 1 : 922 strncmp(p->name.full, _PATH_DEV, len) ? 923 p->name.full : p->name.full + len; 924} 925 926static void 927physical_Found(struct physical *p) 928{ 929 FILE *lockfile; 930 char fn[MAXPATHLEN]; 931 932 if (*p->name.full == '/') { 933 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 934 lockfile = ID0fopen(fn, "w"); 935 if (lockfile != NULL) { 936 fprintf(lockfile, "%s%d\n", TUN_NAME, p->dl->bundle->unit); 937 fclose(lockfile); 938 } 939#ifndef RELEASE_CRUNCH 940 else 941 log_Printf(LogALERT, "%s: Can't create %s: %s\n", 942 p->link.name, fn, strerror(errno)); 943#endif 944 } 945 946 throughput_start(&p->link.throughput, "physical throughput", 947 Enabled(p->dl->bundle, OPT_THROUGHPUT)); 948 p->connect_count++; 949 p->input.sz = 0; 950 951 log_Printf(LogPHASE, "%s: Connected!\n", p->link.name); 952} 953 954int 955physical_Open(struct physical *p, struct bundle *bundle) 956{ 957 int devno, h, wasfd, err; 958 char *dev; 959 960 if (p->fd >= 0) 961 log_Printf(LogDEBUG, "%s: Open: Modem is already open!\n", p->link.name); 962 /* We're going back into "term" mode */ 963 else if (p->type == PHYS_DIRECT) { 964 physical_SetDevice(p, ""); 965 p->fd = STDIN_FILENO; 966 for (h = 0; h < NDEVICES && p->handler == NULL && p->fd >= 0; h++) 967 p->handler = (*devices[h].create)(p); 968 if (p->fd >= 0) { 969 if (p->handler == NULL) { 970 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 971 log_Printf(LogDEBUG, "%s: stdin is unidentified\n", p->link.name); 972 } 973 physical_Found(p); 974 } 975 } else { 976 dev = p->cfg.devlist; 977 devno = 0; 978 while (devno < p->cfg.ndev && p->fd < 0) { 979 physical_SetDevice(p, dev); 980 if (physical_Lock(p)) { 981 err = 0; 982 983 if (*p->name.full == '/') { 984 p->fd = ID0open(p->name.full, O_RDWR | O_NONBLOCK); 985 if (p->fd < 0) 986 err = errno; 987 } 988 989 wasfd = p->fd; 990 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 991 if ((p->handler = (*devices[h].create)(p)) == NULL && wasfd != p->fd) 992 break; 993 994 if (p->fd < 0) { 995 if (h == NDEVICES) { 996 if (err) 997 log_Printf(LogWARN, "%s: %s: %s\n", p->link.name, p->name.full, 998 strerror(errno)); 999 else 1000 log_Printf(LogWARN, "%s: Device (%s) must begin with a '/'," 1001 " a '!' or contain at least one ':'\n", p->link.name, 1002 p->name.full); 1003 } 1004 physical_Unlock(p); 1005 } else 1006 physical_Found(p); 1007 } 1008 dev += strlen(dev) + 1; 1009 devno++; 1010 } 1011 } 1012 1013 return p->fd; 1014} 1015 1016void 1017physical_SetupStack(struct physical *p, const char *who, int how) 1018{ 1019 link_EmptyStack(&p->link); 1020 if (how == PHYSICAL_FORCE_SYNC || how == PHYSICAL_FORCE_SYNCNOACF || 1021 (how == PHYSICAL_NOFORCE && physical_IsSync(p))) 1022 link_Stack(&p->link, &synclayer); 1023 else { 1024 link_Stack(&p->link, &asynclayer); 1025 link_Stack(&p->link, &hdlclayer); 1026 } 1027 if (how != PHYSICAL_FORCE_SYNCNOACF) 1028 link_Stack(&p->link, &acflayer); 1029 link_Stack(&p->link, &protolayer); 1030 link_Stack(&p->link, &lqrlayer); 1031 link_Stack(&p->link, &ccplayer); 1032 link_Stack(&p->link, &vjlayer); 1033#ifndef NONAT 1034 link_Stack(&p->link, &natlayer); 1035#endif 1036 if (how == PHYSICAL_FORCE_ASYNC && physical_IsSync(p)) { 1037 log_Printf(LogWARN, "Sync device setting ignored for ``%s'' device\n", who); 1038 p->cfg.speed = MODEM_SPEED; 1039 } else if (how == PHYSICAL_FORCE_SYNC && !physical_IsSync(p)) { 1040 log_Printf(LogWARN, "Async device setting ignored for ``%s'' device\n", 1041 who); 1042 physical_SetSync(p); 1043 } 1044} 1045 1046void 1047physical_StopDeviceTimer(struct physical *p) 1048{ 1049 if (p->handler && p->handler->stoptimer) 1050 (*p->handler->stoptimer)(p); 1051} 1052 1053int 1054physical_AwaitCarrier(struct physical *p) 1055{ 1056 if (p->handler && p->handler->awaitcarrier) 1057 return (*p->handler->awaitcarrier)(p); 1058 1059 return CARRIER_OK; 1060} 1061