physical.c revision 132423
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 132423 2004-07-20 01:42:30Z 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/socket.h> 28#include <sys/un.h> 29 30#include <errno.h> 31#include <fcntl.h> 32#include <paths.h> 33#include <stdarg.h> 34#include <stdio.h> 35#include <stdlib.h> 36#include <string.h> 37#include <sys/tty.h> /* TIOCOUTQ */ 38#include <sys/uio.h> 39#include <time.h> 40#include <unistd.h> 41#include <utmp.h> 42#if defined(__OpenBSD__) || defined(__NetBSD__) 43#include <sys/ioctl.h> 44#include <util.h> 45#else 46#include <libutil.h> 47#endif 48 49#include "layer.h" 50#ifndef NONAT 51#include "nat_cmd.h" 52#endif 53#include "proto.h" 54#include "acf.h" 55#include "vjcomp.h" 56#include "defs.h" 57#include "command.h" 58#include "mbuf.h" 59#include "log.h" 60#include "id.h" 61#include "timer.h" 62#include "fsm.h" 63#include "lqr.h" 64#include "hdlc.h" 65#include "lcp.h" 66#include "throughput.h" 67#include "sync.h" 68#include "async.h" 69#include "iplist.h" 70#include "slcompress.h" 71#include "ncpaddr.h" 72#include "ipcp.h" 73#include "filter.h" 74#include "descriptor.h" 75#include "ccp.h" 76#include "link.h" 77#include "physical.h" 78#include "mp.h" 79#ifndef NORADIUS 80#include "radius.h" 81#endif 82#include "ipv6cp.h" 83#include "ncp.h" 84#include "bundle.h" 85#include "prompt.h" 86#include "chat.h" 87#include "auth.h" 88#include "chap.h" 89#include "cbcp.h" 90#include "datalink.h" 91#include "tcp.h" 92#include "udp.h" 93#include "exec.h" 94#include "tty.h" 95#ifndef NOI4B 96#include "i4b.h" 97#endif 98#ifndef NONETGRAPH 99#include "ether.h" 100#include "netgraph.h" 101#endif 102#ifndef NOATM 103#include "atm.h" 104#endif 105#include "tcpmss.h" 106 107#define PPPOTCPLINE "ppp" 108 109static int physical_DescriptorWrite(struct fdescriptor *, struct bundle *, 110 const fd_set *); 111 112static int 113physical_DeviceSize(void) 114{ 115 return sizeof(struct device); 116} 117 118struct { 119 struct device *(*create)(struct physical *); 120 struct device *(*iov2device)(int, struct physical *, struct iovec *, 121 int *, int, int *, int *); 122 int (*DeviceSize)(void); 123} devices[] = { 124#ifndef NOI4B 125 /* 126 * This must come before ``tty'' so that the probe routine is 127 * able to identify it as a more specific type of terminal device. 128 */ 129 { i4b_Create, i4b_iov2device, i4b_DeviceSize }, 130#endif 131 { tty_Create, tty_iov2device, tty_DeviceSize }, 132#ifndef NONETGRAPH 133 /* 134 * This must come before ``udp'' so that the probe routine is 135 * able to identify it as a more specific type of SOCK_DGRAM. 136 */ 137 { ether_Create, ether_iov2device, ether_DeviceSize }, 138#ifdef EXPERIMENTAL_NETGRAPH 139 { ng_Create, ng_iov2device, ng_DeviceSize }, 140#endif 141#endif 142#ifndef NOATM 143 /* Ditto for ATM devices */ 144 { atm_Create, atm_iov2device, atm_DeviceSize }, 145#endif 146 { tcp_Create, tcp_iov2device, tcp_DeviceSize }, 147 { udp_Create, udp_iov2device, udp_DeviceSize }, 148 { exec_Create, exec_iov2device, exec_DeviceSize } 149}; 150 151#define NDEVICES (sizeof devices / sizeof devices[0]) 152 153static int 154physical_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 155 int *n) 156{ 157 return physical_doUpdateSet(d, r, w, e, n, 0); 158} 159 160void 161physical_SetDescriptor(struct physical *p) 162{ 163 p->desc.type = PHYSICAL_DESCRIPTOR; 164 p->desc.UpdateSet = physical_UpdateSet; 165 p->desc.IsSet = physical_IsSet; 166 p->desc.Read = physical_DescriptorRead; 167 p->desc.Write = physical_DescriptorWrite; 168} 169 170struct physical * 171physical_Create(struct datalink *dl, int type) 172{ 173 struct physical *p; 174 175 p = (struct physical *)malloc(sizeof(struct physical)); 176 if (!p) 177 return NULL; 178 179 p->link.type = PHYSICAL_LINK; 180 p->link.name = dl->name; 181 p->link.len = sizeof *p; 182 183 /* The sample period is fixed - see physical2iov() & iov2physical() */ 184 throughput_init(&p->link.stats.total, SAMPLE_PERIOD); 185 p->link.stats.parent = dl->bundle->ncp.mp.active ? 186 &dl->bundle->ncp.mp.link.stats.total : NULL; 187 p->link.stats.gather = 1; 188 189 memset(p->link.Queue, '\0', sizeof p->link.Queue); 190 memset(p->link.proto_in, '\0', sizeof p->link.proto_in); 191 memset(p->link.proto_out, '\0', sizeof p->link.proto_out); 192 link_EmptyStack(&p->link); 193 194 p->handler = NULL; 195 physical_SetDescriptor(p); 196 p->type = type; 197 198 hdlc_Init(&p->hdlc, &p->link.lcp); 199 async_Init(&p->async); 200 201 p->fd = -1; 202 p->out = NULL; 203 p->connect_count = 0; 204 p->dl = dl; 205 p->input.sz = 0; 206 *p->name.full = '\0'; 207 p->name.base = p->name.full; 208 209 p->Utmp = 0; 210 p->session_owner = (pid_t)-1; 211 212 p->cfg.rts_cts = MODEM_CTSRTS; 213 p->cfg.speed = MODEM_SPEED; 214 p->cfg.parity = CS8; 215 memcpy(p->cfg.devlist, MODEM_LIST, sizeof MODEM_LIST); 216 p->cfg.ndev = NMODEMS; 217 p->cfg.cd.necessity = CD_DEFAULT; 218 p->cfg.cd.delay = 0; /* reconfigured or device specific default */ 219 220 lcp_Init(&p->link.lcp, dl->bundle, &p->link, &dl->fsmp); 221 ccp_Init(&p->link.ccp, dl->bundle, &p->link, &dl->fsmp); 222 223 return p; 224} 225 226static const struct parity { 227 const char *name; 228 const char *name1; 229 int set; 230} validparity[] = { 231 { "even", "P_EVEN", CS7 | PARENB }, 232 { "odd", "P_ODD", CS7 | PARENB | PARODD }, 233 { "none", "P_ZERO", CS8 }, 234 { NULL, 0 }, 235}; 236 237static int 238GetParityValue(const char *str) 239{ 240 const struct parity *pp; 241 242 for (pp = validparity; pp->name; pp++) { 243 if (strcasecmp(pp->name, str) == 0 || 244 strcasecmp(pp->name1, str) == 0) { 245 return pp->set; 246 } 247 } 248 return (-1); 249} 250 251int 252physical_SetParity(struct physical *p, const char *str) 253{ 254 struct termios rstio; 255 int val; 256 257 val = GetParityValue(str); 258 if (val > 0) { 259 p->cfg.parity = val; 260 if (p->fd >= 0) { 261 tcgetattr(p->fd, &rstio); 262 rstio.c_cflag &= ~(CSIZE | PARODD | PARENB); 263 rstio.c_cflag |= val; 264 tcsetattr(p->fd, TCSADRAIN, &rstio); 265 } 266 return 0; 267 } 268 log_Printf(LogWARN, "%s: %s: Invalid parity\n", p->link.name, str); 269 return -1; 270} 271 272int 273physical_GetSpeed(struct physical *p) 274{ 275 if (p->handler && p->handler->speed) 276 return (*p->handler->speed)(p); 277 278 return 0; 279} 280 281int 282physical_SetSpeed(struct physical *p, int speed) 283{ 284 if (IntToSpeed(speed) != B0) { 285 p->cfg.speed = speed; 286 return 1; 287 } 288 289 return 0; 290} 291 292int 293physical_Raw(struct physical *p) 294{ 295 if (p->handler && p->handler->raw) 296 return (*p->handler->raw)(p); 297 298 return 1; 299} 300 301void 302physical_Offline(struct physical *p) 303{ 304 if (p->handler && p->handler->offline) 305 (*p->handler->offline)(p); 306 log_Printf(LogPHASE, "%s: Disconnected!\n", p->link.name); 307} 308 309static int 310physical_Lock(struct physical *p) 311{ 312 int res; 313 314 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 315 (res = ID0uu_lock(p->name.base)) != UU_LOCK_OK) { 316 if (res == UU_LOCK_INUSE) 317 log_Printf(LogPHASE, "%s: %s is in use\n", p->link.name, p->name.full); 318 else 319 log_Printf(LogPHASE, "%s: %s is in use: uu_lock: %s\n", 320 p->link.name, p->name.full, uu_lockerr(res)); 321 return 0; 322 } 323 324 return 1; 325} 326 327static void 328physical_Unlock(struct physical *p) 329{ 330 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 331 ID0uu_unlock(p->name.base) == -1) 332 log_Printf(LogALERT, "%s: Can't uu_unlock %s\n", p->link.name, 333 p->name.base); 334} 335 336void 337physical_Close(struct physical *p) 338{ 339 int newsid; 340 char fn[PATH_MAX]; 341 342 if (p->fd < 0) 343 return; 344 345 log_Printf(LogDEBUG, "%s: Close\n", p->link.name); 346 347 if (p->handler && p->handler->cooked) 348 (*p->handler->cooked)(p); 349 350 physical_StopDeviceTimer(p); 351 if (p->Utmp) { 352 if (p->handler && (p->handler->type == TCP_DEVICE || 353 p->handler->type == UDP_DEVICE)) 354 /* Careful - we logged in on line ``ppp'' with IP as our host */ 355 ID0logout(PPPOTCPLINE, 1); 356 else 357 ID0logout(p->name.base, 0); 358 p->Utmp = 0; 359 } 360 newsid = tcgetpgrp(p->fd) == getpgrp(); 361 close(p->fd); 362 p->fd = -1; 363 log_SetTtyCommandMode(p->dl); 364 365 throughput_stop(&p->link.stats.total); 366 throughput_log(&p->link.stats.total, LogPHASE, p->link.name); 367 368 if (p->session_owner != (pid_t)-1) { 369 log_Printf(LogPHASE, "%s: HUPing %ld\n", p->link.name, 370 (long)p->session_owner); 371 ID0kill(p->session_owner, SIGHUP); 372 p->session_owner = (pid_t)-1; 373 } 374 375 if (newsid) 376 bundle_setsid(p->dl->bundle, 0); 377 378 if (*p->name.full == '/') { 379 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 380#ifndef RELEASE_CRUNCH 381 if (ID0unlink(fn) == -1) 382 log_Printf(LogALERT, "%s: Can't remove %s: %s\n", 383 p->link.name, fn, strerror(errno)); 384#else 385 ID0unlink(fn); 386#endif 387 } 388 physical_Unlock(p); 389 if (p->handler && p->handler->destroy) 390 (*p->handler->destroy)(p); 391 p->handler = NULL; 392 p->name.base = p->name.full; 393 *p->name.full = '\0'; 394} 395 396void 397physical_Destroy(struct physical *p) 398{ 399 physical_Close(p); 400 throughput_destroy(&p->link.stats.total); 401 free(p); 402} 403 404static int 405physical_DescriptorWrite(struct fdescriptor *d, struct bundle *bundle, 406 const fd_set *fdset) 407{ 408 struct physical *p = descriptor2physical(d); 409 int nw, result = 0; 410 411 if (p->out == NULL) 412 p->out = link_Dequeue(&p->link); 413 414 if (p->out) { 415 nw = physical_Write(p, MBUF_CTOP(p->out), p->out->m_len); 416 log_Printf(LogDEBUG, "%s: DescriptorWrite: wrote %d(%lu) to %d\n", 417 p->link.name, nw, (unsigned long)p->out->m_len, p->fd); 418 if (nw > 0) { 419 p->out->m_len -= nw; 420 p->out->m_offset += nw; 421 if (p->out->m_len == 0) 422 p->out = m_free(p->out); 423 result = 1; 424 } else if (nw < 0) { 425 if (errno == EAGAIN) 426 result = 1; 427 else if (errno != ENOBUFS) { 428 log_Printf(LogPHASE, "%s: write (fd %d, len %d): %s\n", p->link.name, 429 p->fd, p->out->m_len, strerror(errno)); 430 datalink_Down(p->dl, CLOSE_NORMAL); 431 } 432 } 433 /* else we shouldn't really have been called ! select() is broken ! */ 434 } 435 436 return result; 437} 438 439int 440physical_ShowStatus(struct cmdargs const *arg) 441{ 442 struct physical *p = arg->cx->physical; 443 struct cd *cd; 444 const char *dev; 445 int n, slot; 446 447 prompt_Printf(arg->prompt, "Name: %s\n", p->link.name); 448 prompt_Printf(arg->prompt, " State: "); 449 if (p->fd < 0) 450 prompt_Printf(arg->prompt, "closed\n"); 451 else { 452 slot = physical_Slot(p); 453 if (p->handler && p->handler->openinfo) { 454 if (slot == -1) 455 prompt_Printf(arg->prompt, "open (%s)\n", (*p->handler->openinfo)(p)); 456 else 457 prompt_Printf(arg->prompt, "open (%s, port %d)\n", 458 (*p->handler->openinfo)(p), slot); 459 } else if (slot == -1) 460 prompt_Printf(arg->prompt, "open\n"); 461 else 462 prompt_Printf(arg->prompt, "open (port %d)\n", slot); 463 } 464 465 prompt_Printf(arg->prompt, " Device: %s", 466 *p->name.full ? p->name.full : 467 p->type == PHYS_DIRECT ? "unknown" : "N/A"); 468 if (p->session_owner != (pid_t)-1) 469 prompt_Printf(arg->prompt, " (session owner: %ld)", (long)p->session_owner); 470 471 prompt_Printf(arg->prompt, "\n Link Type: %s\n", mode2Nam(p->type)); 472 prompt_Printf(arg->prompt, " Connect Count: %d\n", p->connect_count); 473#ifdef TIOCOUTQ 474 if (p->fd >= 0 && ioctl(p->fd, TIOCOUTQ, &n) >= 0) 475 prompt_Printf(arg->prompt, " Physical outq: %d\n", n); 476#endif 477 478 prompt_Printf(arg->prompt, " Queued Packets: %lu\n", 479 (u_long)link_QueueLen(&p->link)); 480 prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen); 481 482 prompt_Printf(arg->prompt, "\nDefaults:\n"); 483 484 prompt_Printf(arg->prompt, " Device List: "); 485 dev = p->cfg.devlist; 486 for (n = 0; n < p->cfg.ndev; n++) { 487 if (n) 488 prompt_Printf(arg->prompt, ", "); 489 prompt_Printf(arg->prompt, "\"%s\"", dev); 490 dev += strlen(dev) + 1; 491 } 492 493 prompt_Printf(arg->prompt, "\n Characteristics: "); 494 if (physical_IsSync(arg->cx->physical)) 495 prompt_Printf(arg->prompt, "sync"); 496 else 497 prompt_Printf(arg->prompt, "%dbps", p->cfg.speed); 498 499 switch (p->cfg.parity & CSIZE) { 500 case CS7: 501 prompt_Printf(arg->prompt, ", cs7"); 502 break; 503 case CS8: 504 prompt_Printf(arg->prompt, ", cs8"); 505 break; 506 } 507 if (p->cfg.parity & PARENB) { 508 if (p->cfg.parity & PARODD) 509 prompt_Printf(arg->prompt, ", odd parity"); 510 else 511 prompt_Printf(arg->prompt, ", even parity"); 512 } else 513 prompt_Printf(arg->prompt, ", no parity"); 514 515 prompt_Printf(arg->prompt, ", CTS/RTS %s\n", (p->cfg.rts_cts ? "on" : "off")); 516 517 prompt_Printf(arg->prompt, " CD check delay: "); 518 cd = p->handler ? &p->handler->cd : &p->cfg.cd; 519 if (cd->necessity == CD_NOTREQUIRED) 520 prompt_Printf(arg->prompt, "no cd"); 521 else if (p->cfg.cd.necessity == CD_DEFAULT) { 522 prompt_Printf(arg->prompt, "device specific"); 523 } else { 524 prompt_Printf(arg->prompt, "%d second%s", p->cfg.cd.delay, 525 p->cfg.cd.delay == 1 ? "" : "s"); 526 if (p->cfg.cd.necessity == CD_REQUIRED) 527 prompt_Printf(arg->prompt, " (required!)"); 528 } 529 prompt_Printf(arg->prompt, "\n\n"); 530 531 throughput_disp(&p->link.stats.total, arg->prompt); 532 533 return 0; 534} 535 536void 537physical_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 538 const fd_set *fdset) 539{ 540 struct physical *p = descriptor2physical(d); 541 u_char *rbuff; 542 int n, found; 543 544 rbuff = p->input.buf + p->input.sz; 545 546 /* something to read */ 547 n = physical_Read(p, rbuff, sizeof p->input.buf - p->input.sz); 548 log_Printf(LogDEBUG, "%s: DescriptorRead: read %d/%d from %d\n", 549 p->link.name, n, (int)(sizeof p->input.buf - p->input.sz), p->fd); 550 if (n <= 0) { 551 if (n < 0) 552 log_Printf(LogPHASE, "%s: read (%d): %s\n", p->link.name, p->fd, 553 strerror(errno)); 554 else 555 log_Printf(LogPHASE, "%s: read (%d): Got zero bytes\n", 556 p->link.name, p->fd); 557 datalink_Down(p->dl, CLOSE_NORMAL); 558 return; 559 } 560 561 rbuff -= p->input.sz; 562 n += p->input.sz; 563 564 if (p->link.lcp.fsm.state <= ST_CLOSED) { 565 if (p->type != PHYS_DEDICATED) { 566 found = hdlc_Detect((u_char const **)&rbuff, n, physical_IsSync(p)); 567 if (rbuff != p->input.buf) 568 log_WritePrompts(p->dl, "%.*s", (int)(rbuff - p->input.buf), 569 p->input.buf); 570 p->input.sz = n - (rbuff - p->input.buf); 571 572 if (found) { 573 /* LCP packet is detected. Turn ourselves into packet mode */ 574 log_Printf(LogPHASE, "%s: PPP packet detected, coming up\n", 575 p->link.name); 576 log_SetTtyCommandMode(p->dl); 577 datalink_Up(p->dl, 0, 1); 578 link_PullPacket(&p->link, rbuff, p->input.sz, bundle); 579 p->input.sz = 0; 580 } else 581 bcopy(rbuff, p->input.buf, p->input.sz); 582 } else 583 /* In -dedicated mode, we just discard input until LCP is started */ 584 p->input.sz = 0; 585 } else if (n > 0) 586 link_PullPacket(&p->link, rbuff, n, bundle); 587} 588 589struct physical * 590iov2physical(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 591 int fd, int *auxfd, int *nauxfd) 592{ 593 struct physical *p; 594 int len, h, type; 595 596 p = (struct physical *)iov[(*niov)++].iov_base; 597 p->link.name = dl->name; 598 memset(p->link.Queue, '\0', sizeof p->link.Queue); 599 600 p->desc.UpdateSet = physical_UpdateSet; 601 p->desc.IsSet = physical_IsSet; 602 p->desc.Read = physical_DescriptorRead; 603 p->desc.Write = physical_DescriptorWrite; 604 p->type = PHYS_DIRECT; 605 p->dl = dl; 606 len = strlen(_PATH_DEV); 607 p->out = NULL; 608 p->connect_count = 1; 609 610 physical_SetDevice(p, p->name.full); 611 612 p->link.lcp.fsm.bundle = dl->bundle; 613 p->link.lcp.fsm.link = &p->link; 614 memset(&p->link.lcp.fsm.FsmTimer, '\0', sizeof p->link.lcp.fsm.FsmTimer); 615 memset(&p->link.lcp.fsm.OpenTimer, '\0', sizeof p->link.lcp.fsm.OpenTimer); 616 memset(&p->link.lcp.fsm.StoppedTimer, '\0', 617 sizeof p->link.lcp.fsm.StoppedTimer); 618 p->link.lcp.fsm.parent = &dl->fsmp; 619 lcp_SetupCallbacks(&p->link.lcp); 620 621 p->link.ccp.fsm.bundle = dl->bundle; 622 p->link.ccp.fsm.link = &p->link; 623 /* Our in.state & out.state are NULL (no link-level ccp yet) */ 624 memset(&p->link.ccp.fsm.FsmTimer, '\0', sizeof p->link.ccp.fsm.FsmTimer); 625 memset(&p->link.ccp.fsm.OpenTimer, '\0', sizeof p->link.ccp.fsm.OpenTimer); 626 memset(&p->link.ccp.fsm.StoppedTimer, '\0', 627 sizeof p->link.ccp.fsm.StoppedTimer); 628 p->link.ccp.fsm.parent = &dl->fsmp; 629 ccp_SetupCallbacks(&p->link.ccp); 630 631 p->hdlc.lqm.owner = &p->link.lcp; 632 p->hdlc.ReportTimer.state = TIMER_STOPPED; 633 p->hdlc.lqm.timer.state = TIMER_STOPPED; 634 635 p->fd = fd; 636 p->link.stats.total.in.SampleOctets = (long long *)iov[(*niov)++].iov_base; 637 p->link.stats.total.out.SampleOctets = (long long *)iov[(*niov)++].iov_base; 638 p->link.stats.parent = dl->bundle->ncp.mp.active ? 639 &dl->bundle->ncp.mp.link.stats.total : NULL; 640 p->link.stats.gather = 1; 641 642 type = (long)p->handler; 643 p->handler = NULL; 644 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 645 p->handler = (*devices[h].iov2device)(type, p, iov, niov, maxiov, 646 auxfd, nauxfd); 647 if (p->handler == NULL) { 648 log_Printf(LogPHASE, "%s: Unknown link type\n", p->link.name); 649 free(iov[(*niov)++].iov_base); 650 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 651 } else 652 log_Printf(LogPHASE, "%s: Device %s, link type is %s\n", 653 p->link.name, p->name.full, p->handler->name); 654 655 if (p->hdlc.lqm.method && p->hdlc.lqm.timer.load) 656 lqr_reStart(&p->link.lcp); 657 hdlc_StartTimer(&p->hdlc); 658 659 throughput_restart(&p->link.stats.total, "physical throughput", 660 Enabled(dl->bundle, OPT_THROUGHPUT)); 661 662 return p; 663} 664 665int 666physical_MaxDeviceSize() 667{ 668 int biggest, sz, n; 669 670 biggest = sizeof(struct device); 671 for (sz = n = 0; n < NDEVICES; n++) 672 if (devices[n].DeviceSize) { 673 sz = (*devices[n].DeviceSize)(); 674 if (biggest < sz) 675 biggest = sz; 676 } 677 678 return biggest; 679} 680 681int 682physical2iov(struct physical *p, struct iovec *iov, int *niov, int maxiov, 683 int *auxfd, int *nauxfd) 684{ 685 struct device *h; 686 int sz; 687 688 h = NULL; 689 if (p) { 690 hdlc_StopTimer(&p->hdlc); 691 lqr_StopTimer(p); 692 timer_Stop(&p->link.lcp.fsm.FsmTimer); 693 timer_Stop(&p->link.ccp.fsm.FsmTimer); 694 timer_Stop(&p->link.lcp.fsm.OpenTimer); 695 timer_Stop(&p->link.ccp.fsm.OpenTimer); 696 timer_Stop(&p->link.lcp.fsm.StoppedTimer); 697 timer_Stop(&p->link.ccp.fsm.StoppedTimer); 698 if (p->handler) { 699 h = p->handler; 700 p->handler = (struct device *)(long)p->handler->type; 701 } 702 703 if (Enabled(p->dl->bundle, OPT_KEEPSESSION) || 704 tcgetpgrp(p->fd) == getpgrp()) 705 p->session_owner = getpid(); /* So I'll eventually get HUP'd */ 706 else 707 p->session_owner = (pid_t)-1; 708 timer_Stop(&p->link.stats.total.Timer); 709 } 710 711 if (*niov + 2 >= maxiov) { 712 log_Printf(LogERROR, "physical2iov: No room for physical + throughput" 713 " + device !\n"); 714 if (p) 715 free(p); 716 return -1; 717 } 718 719 iov[*niov].iov_base = (void *)p; 720 iov[*niov].iov_len = sizeof *p; 721 (*niov)++; 722 723 iov[*niov].iov_base = p ? (void *)p->link.stats.total.in.SampleOctets : NULL; 724 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 725 (*niov)++; 726 iov[*niov].iov_base = p ? (void *)p->link.stats.total.out.SampleOctets : NULL; 727 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 728 (*niov)++; 729 730 sz = physical_MaxDeviceSize(); 731 if (p) { 732 if (h && h->device2iov) 733 (*h->device2iov)(h, iov, niov, maxiov, auxfd, nauxfd); 734 else { 735 iov[*niov].iov_base = malloc(sz); 736 if (h) 737 memcpy(iov[*niov].iov_base, h, sizeof *h); 738 iov[*niov].iov_len = sz; 739 (*niov)++; 740 } 741 } else { 742 iov[*niov].iov_base = NULL; 743 iov[*niov].iov_len = sz; 744 (*niov)++; 745 } 746 747 return p ? p->fd : 0; 748} 749 750const char * 751physical_LockedDevice(struct physical *p) 752{ 753 if (p->fd >= 0 && *p->name.full == '/' && p->type != PHYS_DIRECT) 754 return p->name.base; 755 756 return NULL; 757} 758 759void 760physical_ChangedPid(struct physical *p, pid_t newpid) 761{ 762 if (physical_LockedDevice(p)) { 763 int res; 764 765 if ((res = ID0uu_lock_txfr(p->name.base, newpid)) != UU_LOCK_OK) 766 log_Printf(LogPHASE, "uu_lock_txfr: %s\n", uu_lockerr(res)); 767 } 768} 769 770int 771physical_IsSync(struct physical *p) 772{ 773 return p->cfg.speed == 0; 774} 775 776u_short 777physical_DeviceMTU(struct physical *p) 778{ 779 return p->handler ? p->handler->mtu : 0; 780} 781 782const char *physical_GetDevice(struct physical *p) 783{ 784 return p->name.full; 785} 786 787void 788physical_SetDeviceList(struct physical *p, int argc, const char *const *argv) 789{ 790 int f, pos; 791 792 p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0'; 793 for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) { 794 if (pos) 795 p->cfg.devlist[pos++] = '\0'; 796 strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1); 797 pos += strlen(p->cfg.devlist + pos); 798 } 799 p->cfg.ndev = f; 800} 801 802void 803physical_SetSync(struct physical *p) 804{ 805 p->cfg.speed = 0; 806} 807 808int 809physical_SetRtsCts(struct physical *p, int enable) 810{ 811 p->cfg.rts_cts = enable ? 1 : 0; 812 return 1; 813} 814 815ssize_t 816physical_Read(struct physical *p, void *buf, size_t nbytes) 817{ 818 ssize_t ret; 819 820 if (p->handler && p->handler->read) 821 ret = (*p->handler->read)(p, buf, nbytes); 822 else 823 ret = read(p->fd, buf, nbytes); 824 825 log_DumpBuff(LogPHYSICAL, "read", buf, ret); 826 827 return ret; 828} 829 830ssize_t 831physical_Write(struct physical *p, const void *buf, size_t nbytes) 832{ 833 log_DumpBuff(LogPHYSICAL, "write", buf, nbytes); 834 835 if (p->handler && p->handler->write) 836 return (*p->handler->write)(p, buf, nbytes); 837 838 return write(p->fd, buf, nbytes); 839} 840 841int 842physical_doUpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 843 int *n, int force) 844{ 845 struct physical *p = descriptor2physical(d); 846 int sets; 847 848 sets = 0; 849 if (p->fd >= 0) { 850 if (r) { 851 FD_SET(p->fd, r); 852 log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd); 853 sets++; 854 } 855 if (e) { 856 FD_SET(p->fd, e); 857 log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd); 858 sets++; 859 } 860 if (w && (force || link_QueueLen(&p->link) || p->out)) { 861 FD_SET(p->fd, w); 862 log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd); 863 sets++; 864 } 865 if (sets && *n < p->fd + 1) 866 *n = p->fd + 1; 867 } 868 869 return sets; 870} 871 872int 873physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 874{ 875 if (p->handler && p->handler->removefromset) 876 return (*p->handler->removefromset)(p, r, w, e); 877 else { 878 int sets; 879 880 sets = 0; 881 if (p->fd >= 0) { 882 if (r && FD_ISSET(p->fd, r)) { 883 FD_CLR(p->fd, r); 884 log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd); 885 sets++; 886 } 887 if (e && FD_ISSET(p->fd, e)) { 888 FD_CLR(p->fd, e); 889 log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd); 890 sets++; 891 } 892 if (w && FD_ISSET(p->fd, w)) { 893 FD_CLR(p->fd, w); 894 log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd); 895 sets++; 896 } 897 } 898 899 return sets; 900 } 901} 902 903int 904physical_IsSet(struct fdescriptor *d, const fd_set *fdset) 905{ 906 struct physical *p = descriptor2physical(d); 907 return p->fd >= 0 && FD_ISSET(p->fd, fdset); 908} 909 910void 911physical_Login(struct physical *p, const char *name) 912{ 913 if (p->type == PHYS_DIRECT && *p->name.base && !p->Utmp) { 914 struct utmp ut; 915 const char *connstr; 916 char *colon; 917 918 memset(&ut, 0, sizeof ut); 919 ut.ut_time = time(NULL); 920 strncpy(ut.ut_name, name, sizeof ut.ut_name); 921 if (p->handler && (p->handler->type == TCP_DEVICE || 922 p->handler->type == UDP_DEVICE)) { 923 strncpy(ut.ut_line, PPPOTCPLINE, sizeof ut.ut_line); 924 strncpy(ut.ut_host, p->name.base, sizeof ut.ut_host); 925 colon = memchr(ut.ut_host, ':', sizeof ut.ut_host); 926 if (colon) 927 *colon = '\0'; 928 } else 929 strncpy(ut.ut_line, p->name.base, sizeof ut.ut_line); 930 if ((connstr = getenv("CONNECT"))) 931 /* mgetty sets this to the connection speed */ 932 strncpy(ut.ut_host, connstr, sizeof ut.ut_host); 933 ID0login(&ut); 934 p->Utmp = ut.ut_time; 935 } 936} 937 938int 939physical_SetMode(struct physical *p, int mode) 940{ 941 if ((p->type & (PHYS_DIRECT|PHYS_DEDICATED) || 942 mode & (PHYS_DIRECT|PHYS_DEDICATED)) && 943 (!(p->type & PHYS_DIRECT) || !(mode & PHYS_BACKGROUND))) { 944 /* Note: The -direct -> -background is for callback ! */ 945 log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name, 946 mode2Nam(p->type), mode2Nam(mode)); 947 return 0; 948 } 949 p->type = mode; 950 return 1; 951} 952 953void 954physical_DeleteQueue(struct physical *p) 955{ 956 if (p->out) { 957 m_freem(p->out); 958 p->out = NULL; 959 } 960 link_DeleteQueue(&p->link); 961} 962 963void 964physical_SetDevice(struct physical *p, const char *name) 965{ 966 int len = strlen(_PATH_DEV); 967 968 if (name != p->name.full) { 969 strncpy(p->name.full, name, sizeof p->name.full - 1); 970 p->name.full[sizeof p->name.full - 1] = '\0'; 971 } 972 p->name.base = *p->name.full == '!' ? p->name.full + 1 : 973 strncmp(p->name.full, _PATH_DEV, len) ? 974 p->name.full : p->name.full + len; 975} 976 977static void 978physical_Found(struct physical *p) 979{ 980 FILE *lockfile; 981 char fn[PATH_MAX]; 982 983 if (*p->name.full == '/') { 984 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 985 lockfile = ID0fopen(fn, "w"); 986 if (lockfile != NULL) { 987 fprintf(lockfile, "%s%d\n", TUN_NAME, p->dl->bundle->unit); 988 fclose(lockfile); 989 } 990#ifndef RELEASE_CRUNCH 991 else 992 log_Printf(LogALERT, "%s: Can't create %s: %s\n", 993 p->link.name, fn, strerror(errno)); 994#endif 995 } 996 997 throughput_start(&p->link.stats.total, "physical throughput", 998 Enabled(p->dl->bundle, OPT_THROUGHPUT)); 999 p->connect_count++; 1000 p->input.sz = 0; 1001 1002 log_Printf(LogPHASE, "%s: Connected!\n", p->link.name); 1003} 1004 1005int 1006physical_Open(struct physical *p, struct bundle *bundle) 1007{ 1008 int devno, h, wasfd, err; 1009 char *dev; 1010 1011 if (p->fd >= 0) 1012 log_Printf(LogDEBUG, "%s: Open: Modem is already open!\n", p->link.name); 1013 /* We're going back into "term" mode */ 1014 else if (p->type == PHYS_DIRECT) { 1015 physical_SetDevice(p, ""); 1016 p->fd = STDIN_FILENO; 1017 for (h = 0; h < NDEVICES && p->handler == NULL && p->fd >= 0; h++) 1018 p->handler = (*devices[h].create)(p); 1019 if (p->fd >= 0) { 1020 if (p->handler == NULL) { 1021 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 1022 log_Printf(LogDEBUG, "%s: stdin is unidentified\n", p->link.name); 1023 } 1024 physical_Found(p); 1025 } 1026 } else { 1027 dev = p->cfg.devlist; 1028 devno = 0; 1029 while (devno < p->cfg.ndev && p->fd < 0) { 1030 physical_SetDevice(p, dev); 1031 if (physical_Lock(p)) { 1032 err = 0; 1033 1034 if (*p->name.full == '/') { 1035 p->fd = ID0open(p->name.full, O_RDWR | O_NONBLOCK); 1036 if (p->fd < 0) 1037 err = errno; 1038 } 1039 1040 wasfd = p->fd; 1041 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 1042 if ((p->handler = (*devices[h].create)(p)) == NULL && wasfd != p->fd) 1043 break; 1044 1045 if (p->fd < 0) { 1046 if (h == NDEVICES) { 1047 if (err) 1048 log_Printf(LogWARN, "%s: %s: %s\n", p->link.name, p->name.full, 1049 strerror(errno)); 1050 else 1051 log_Printf(LogWARN, "%s: Device (%s) must begin with a '/'," 1052 " a '!' or contain at least one ':'\n", p->link.name, 1053 p->name.full); 1054 } 1055 physical_Unlock(p); 1056 } else 1057 physical_Found(p); 1058 } 1059 dev += strlen(dev) + 1; 1060 devno++; 1061 } 1062 } 1063 1064 return p->fd; 1065} 1066 1067void 1068physical_SetupStack(struct physical *p, const char *who, int how) 1069{ 1070 link_EmptyStack(&p->link); 1071 if (how == PHYSICAL_FORCE_SYNC || how == PHYSICAL_FORCE_SYNCNOACF || 1072 (how == PHYSICAL_NOFORCE && physical_IsSync(p))) 1073 link_Stack(&p->link, &synclayer); 1074 else { 1075 link_Stack(&p->link, &asynclayer); 1076 link_Stack(&p->link, &hdlclayer); 1077 } 1078 if (how != PHYSICAL_FORCE_SYNCNOACF) 1079 link_Stack(&p->link, &acflayer); 1080 link_Stack(&p->link, &protolayer); 1081 link_Stack(&p->link, &lqrlayer); 1082 link_Stack(&p->link, &ccplayer); 1083 link_Stack(&p->link, &vjlayer); 1084 link_Stack(&p->link, &tcpmsslayer); 1085#ifndef NONAT 1086 link_Stack(&p->link, &natlayer); 1087#endif 1088 if (how == PHYSICAL_FORCE_ASYNC && physical_IsSync(p)) { 1089 log_Printf(LogWARN, "Sync device setting ignored for ``%s'' device\n", who); 1090 p->cfg.speed = MODEM_SPEED; 1091 } else if (how == PHYSICAL_FORCE_SYNC && !physical_IsSync(p)) { 1092 log_Printf(LogWARN, "Async device setting ignored for ``%s'' device\n", 1093 who); 1094 physical_SetSync(p); 1095 } 1096} 1097 1098void 1099physical_StopDeviceTimer(struct physical *p) 1100{ 1101 if (p->handler && p->handler->stoptimer) 1102 (*p->handler->stoptimer)(p); 1103} 1104 1105int 1106physical_AwaitCarrier(struct physical *p) 1107{ 1108 if (p->handler && p->handler->awaitcarrier) 1109 return (*p->handler->awaitcarrier)(p); 1110 1111 return CARRIER_OK; 1112} 1113 1114 1115void 1116physical_SetAsyncParams(struct physical *p, u_int32_t mymap, u_int32_t hismap) 1117{ 1118 if (p->handler && p->handler->setasyncparams) 1119 return (*p->handler->setasyncparams)(p, mymap, hismap); 1120 1121 async_SetLinkParams(&p->async, mymap, hismap); 1122} 1123 1124int 1125physical_Slot(struct physical *p) 1126{ 1127 if (p->handler && p->handler->slot) 1128 return (*p->handler->slot)(p); 1129 1130 return -1; 1131} 1132