physical.c revision 65862
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 65862 2000-09-14 22:02:54Z 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#ifdef NOSUID 33#include <signal.h> 34#endif 35#include <stdio.h> 36#include <stdlib.h> 37#include <string.h> 38#include <sys/tty.h> /* TIOCOUTQ */ 39#include <sys/uio.h> 40#include <time.h> 41#include <unistd.h> 42#include <utmp.h> 43#if defined(__OpenBSD__) || defined(__NetBSD__) 44#include <sys/ioctl.h> 45#include <util.h> 46#else 47#include <libutil.h> 48#endif 49 50#include "layer.h" 51#ifndef NONAT 52#include "nat_cmd.h" 53#endif 54#include "proto.h" 55#include "acf.h" 56#include "vjcomp.h" 57#include "defs.h" 58#include "command.h" 59#include "mbuf.h" 60#include "log.h" 61#include "id.h" 62#include "timer.h" 63#include "fsm.h" 64#include "lqr.h" 65#include "hdlc.h" 66#include "lcp.h" 67#include "throughput.h" 68#include "sync.h" 69#include "async.h" 70#include "iplist.h" 71#include "slcompress.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 "bundle.h" 83#include "prompt.h" 84#include "chat.h" 85#include "auth.h" 86#include "chap.h" 87#include "cbcp.h" 88#include "datalink.h" 89#include "tcp.h" 90#include "udp.h" 91#include "exec.h" 92#include "tty.h" 93#ifndef NOI4B 94#include "i4b.h" 95#endif 96#ifndef NONETGRAPH 97#include "ether.h" 98#endif 99#ifndef NOATM 100#include "atm.h" 101#endif 102 103#define PPPOTCPLINE "ppp" 104 105static int physical_DescriptorWrite(struct fdescriptor *, struct bundle *, 106 const fd_set *); 107 108static int 109physical_DeviceSize(void) 110{ 111 return sizeof(struct device); 112} 113 114struct { 115 struct device *(*create)(struct physical *); 116 struct device *(*iov2device)(int, struct physical *, struct iovec *, 117 int *, int, int *, int *); 118 int (*DeviceSize)(void); 119} devices[] = { 120#ifndef NOI4B 121 { i4b_Create, i4b_iov2device, i4b_DeviceSize }, 122#endif 123 { tty_Create, tty_iov2device, tty_DeviceSize }, 124#ifndef NONETGRAPH 125 /* This must come before ``udp'' & ``tcp'' */ 126 { ether_Create, ether_iov2device, ether_DeviceSize }, 127#endif 128#ifndef NOATM 129 /* and so must this */ 130 { atm_Create, atm_iov2device, atm_DeviceSize }, 131#endif 132 { tcp_Create, tcp_iov2device, tcp_DeviceSize }, 133 { udp_Create, udp_iov2device, udp_DeviceSize }, 134 { exec_Create, exec_iov2device, exec_DeviceSize } 135}; 136 137#define NDEVICES (sizeof devices / sizeof devices[0]) 138 139static int 140physical_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 141 int *n) 142{ 143 return physical_doUpdateSet(d, r, w, e, n, 0); 144} 145 146void 147physical_SetDescriptor(struct physical *p) 148{ 149 p->desc.type = PHYSICAL_DESCRIPTOR; 150 p->desc.UpdateSet = physical_UpdateSet; 151 p->desc.IsSet = physical_IsSet; 152 p->desc.Read = physical_DescriptorRead; 153 p->desc.Write = physical_DescriptorWrite; 154} 155 156struct physical * 157physical_Create(struct datalink *dl, int type) 158{ 159 struct physical *p; 160 161 p = (struct physical *)malloc(sizeof(struct physical)); 162 if (!p) 163 return NULL; 164 165 p->link.type = PHYSICAL_LINK; 166 p->link.name = dl->name; 167 p->link.len = sizeof *p; 168 169 /* The sample period is fixed - see physical2iov() & iov2physical() */ 170 throughput_init(&p->link.stats.total, SAMPLE_PERIOD); 171 p->link.stats.parent = dl->bundle->ncp.mp.active ? 172 &dl->bundle->ncp.mp.link.stats.total : NULL; 173 p->link.stats.gather = 1; 174 175 memset(p->link.Queue, '\0', sizeof p->link.Queue); 176 memset(p->link.proto_in, '\0', sizeof p->link.proto_in); 177 memset(p->link.proto_out, '\0', sizeof p->link.proto_out); 178 link_EmptyStack(&p->link); 179 180 p->handler = NULL; 181 physical_SetDescriptor(p); 182 p->type = type; 183 184 hdlc_Init(&p->hdlc, &p->link.lcp); 185 async_Init(&p->async); 186 187 p->fd = -1; 188 p->out = NULL; 189 p->connect_count = 0; 190 p->dl = dl; 191 p->input.sz = 0; 192 *p->name.full = '\0'; 193 p->name.base = p->name.full; 194 195 p->Utmp = 0; 196 p->session_owner = (pid_t)-1; 197 198 p->cfg.rts_cts = MODEM_CTSRTS; 199 p->cfg.speed = MODEM_SPEED; 200 p->cfg.parity = CS8; 201 memcpy(p->cfg.devlist, MODEM_LIST, sizeof MODEM_LIST); 202 p->cfg.ndev = NMODEMS; 203 p->cfg.cd.necessity = CD_DEFAULT; 204 p->cfg.cd.delay = 0; /* reconfigured or device specific default */ 205 206 lcp_Init(&p->link.lcp, dl->bundle, &p->link, &dl->fsmp); 207 ccp_Init(&p->link.ccp, dl->bundle, &p->link, &dl->fsmp); 208 209 return p; 210} 211 212static const struct parity { 213 const char *name; 214 const char *name1; 215 int set; 216} validparity[] = { 217 { "even", "P_EVEN", CS7 | PARENB }, 218 { "odd", "P_ODD", CS7 | PARENB | PARODD }, 219 { "none", "P_ZERO", CS8 }, 220 { NULL, 0 }, 221}; 222 223static int 224GetParityValue(const char *str) 225{ 226 const struct parity *pp; 227 228 for (pp = validparity; pp->name; pp++) { 229 if (strcasecmp(pp->name, str) == 0 || 230 strcasecmp(pp->name1, str) == 0) { 231 return pp->set; 232 } 233 } 234 return (-1); 235} 236 237int 238physical_SetParity(struct physical *p, const char *str) 239{ 240 struct termios rstio; 241 int val; 242 243 val = GetParityValue(str); 244 if (val > 0) { 245 p->cfg.parity = val; 246 if (p->fd >= 0) { 247 tcgetattr(p->fd, &rstio); 248 rstio.c_cflag &= ~(CSIZE | PARODD | PARENB); 249 rstio.c_cflag |= val; 250 tcsetattr(p->fd, TCSADRAIN, &rstio); 251 } 252 return 0; 253 } 254 log_Printf(LogWARN, "%s: %s: Invalid parity\n", p->link.name, str); 255 return -1; 256} 257 258int 259physical_GetSpeed(struct physical *p) 260{ 261 if (p->handler && p->handler->speed) 262 return (*p->handler->speed)(p); 263 264 return 0; 265} 266 267int 268physical_SetSpeed(struct physical *p, int speed) 269{ 270 if (IntToSpeed(speed) != B0) { 271 p->cfg.speed = speed; 272 return 1; 273 } 274 275 return 0; 276} 277 278int 279physical_Raw(struct physical *p) 280{ 281 if (p->handler && p->handler->raw) 282 return (*p->handler->raw)(p); 283 284 return 1; 285} 286 287void 288physical_Offline(struct physical *p) 289{ 290 if (p->handler && p->handler->offline) 291 (*p->handler->offline)(p); 292 log_Printf(LogPHASE, "%s: Disconnected!\n", p->link.name); 293} 294 295static int 296physical_Lock(struct physical *p) 297{ 298 int res; 299 300 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 301 (res = ID0uu_lock(p->name.base)) != UU_LOCK_OK) { 302 if (res == UU_LOCK_INUSE) 303 log_Printf(LogPHASE, "%s: %s is in use\n", p->link.name, p->name.full); 304 else 305 log_Printf(LogPHASE, "%s: %s is in use: uu_lock: %s\n", 306 p->link.name, p->name.full, uu_lockerr(res)); 307 return 0; 308 } 309 310 return 1; 311} 312 313static void 314physical_Unlock(struct physical *p) 315{ 316 char fn[MAXPATHLEN]; 317 if (*p->name.full == '/' && p->type != PHYS_DIRECT && 318 ID0uu_unlock(p->name.base) == -1) 319 log_Printf(LogALERT, "%s: Can't uu_unlock %s\n", p->link.name, fn); 320} 321 322void 323physical_Close(struct physical *p) 324{ 325 int newsid; 326 char fn[MAXPATHLEN]; 327 328 if (p->fd < 0) 329 return; 330 331 log_Printf(LogDEBUG, "%s: Close\n", p->link.name); 332 333 if (p->handler && p->handler->cooked) 334 (*p->handler->cooked)(p); 335 336 physical_StopDeviceTimer(p); 337 if (p->Utmp) { 338 if (p->handler && (p->handler->type == TCP_DEVICE || 339 p->handler->type == UDP_DEVICE)) 340 /* Careful - we logged in on line ``ppp'' with IP as our host */ 341 ID0logout(PPPOTCPLINE, 1); 342 else 343 ID0logout(p->name.base, 0); 344 p->Utmp = 0; 345 } 346 newsid = tcgetpgrp(p->fd) == getpgrp(); 347 close(p->fd); 348 p->fd = -1; 349 log_SetTtyCommandMode(p->dl); 350 351 throughput_stop(&p->link.stats.total); 352 throughput_log(&p->link.stats.total, LogPHASE, p->link.name); 353 354 if (p->session_owner != (pid_t)-1) { 355 log_Printf(LogPHASE, "%s: HUPing %d\n", p->link.name, 356 (int)p->session_owner); 357 ID0kill(p->session_owner, SIGHUP); 358 p->session_owner = (pid_t)-1; 359 } 360 361 if (newsid) 362 bundle_setsid(p->dl->bundle, 0); 363 364 if (*p->name.full == '/') { 365 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 366#ifndef RELEASE_CRUNCH 367 if (ID0unlink(fn) == -1) 368 log_Printf(LogALERT, "%s: Can't remove %s: %s\n", 369 p->link.name, fn, strerror(errno)); 370#else 371 ID0unlink(fn); 372#endif 373 } 374 physical_Unlock(p); 375 if (p->handler && p->handler->destroy) 376 (*p->handler->destroy)(p); 377 p->handler = NULL; 378 p->name.base = p->name.full; 379 *p->name.full = '\0'; 380} 381 382void 383physical_Destroy(struct physical *p) 384{ 385 physical_Close(p); 386 throughput_destroy(&p->link.stats.total); 387 free(p); 388} 389 390static int 391physical_DescriptorWrite(struct fdescriptor *d, struct bundle *bundle, 392 const fd_set *fdset) 393{ 394 struct physical *p = descriptor2physical(d); 395 int nw, result = 0; 396 397 if (p->out == NULL) 398 p->out = link_Dequeue(&p->link); 399 400 if (p->out) { 401 nw = physical_Write(p, MBUF_CTOP(p->out), p->out->m_len); 402 log_Printf(LogDEBUG, "%s: DescriptorWrite: wrote %d(%lu) to %d\n", 403 p->link.name, nw, (unsigned long)p->out->m_len, p->fd); 404 if (nw > 0) { 405 p->out->m_len -= nw; 406 p->out->m_offset += nw; 407 if (p->out->m_len == 0) 408 p->out = m_free(p->out); 409 result = 1; 410 } else if (nw < 0) { 411 if (errno != EAGAIN) { 412 log_Printf(LogPHASE, "%s: write (%d): %s\n", p->link.name, 413 p->fd, strerror(errno)); 414 datalink_Down(p->dl, CLOSE_NORMAL); 415 } 416 result = 1; 417 } 418 /* else we shouldn't really have been called ! select() is broken ! */ 419 } 420 421 return result; 422} 423 424int 425physical_ShowStatus(struct cmdargs const *arg) 426{ 427 struct physical *p = arg->cx->physical; 428 struct cd *cd; 429 const char *dev; 430 int n; 431 432 prompt_Printf(arg->prompt, "Name: %s\n", p->link.name); 433 prompt_Printf(arg->prompt, " State: "); 434 if (p->fd < 0) 435 prompt_Printf(arg->prompt, "closed\n"); 436 else if (p->handler && p->handler->openinfo) 437 prompt_Printf(arg->prompt, "open (%s)\n", (*p->handler->openinfo)(p)); 438 else 439 prompt_Printf(arg->prompt, "open\n"); 440 441 prompt_Printf(arg->prompt, " Device: %s", 442 *p->name.full ? p->name.full : 443 p->type == PHYS_DIRECT ? "unknown" : "N/A"); 444 if (p->session_owner != (pid_t)-1) 445 prompt_Printf(arg->prompt, " (session owner: %d)", (int)p->session_owner); 446 447 prompt_Printf(arg->prompt, "\n Link Type: %s\n", mode2Nam(p->type)); 448 prompt_Printf(arg->prompt, " Connect Count: %d\n", p->connect_count); 449#ifdef TIOCOUTQ 450 if (p->fd >= 0 && ioctl(p->fd, TIOCOUTQ, &n) >= 0) 451 prompt_Printf(arg->prompt, " Physical outq: %d\n", n); 452#endif 453 454 prompt_Printf(arg->prompt, " Queued Packets: %lu\n", 455 (u_long)link_QueueLen(&p->link)); 456 prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen); 457 458 prompt_Printf(arg->prompt, "\nDefaults:\n"); 459 460 prompt_Printf(arg->prompt, " Device List: "); 461 dev = p->cfg.devlist; 462 for (n = 0; n < p->cfg.ndev; n++) { 463 if (n) 464 prompt_Printf(arg->prompt, ", "); 465 prompt_Printf(arg->prompt, "\"%s\"", dev); 466 dev += strlen(dev) + 1; 467 } 468 469 prompt_Printf(arg->prompt, "\n Characteristics: "); 470 if (physical_IsSync(arg->cx->physical)) 471 prompt_Printf(arg->prompt, "sync"); 472 else 473 prompt_Printf(arg->prompt, "%dbps", p->cfg.speed); 474 475 switch (p->cfg.parity & CSIZE) { 476 case CS7: 477 prompt_Printf(arg->prompt, ", cs7"); 478 break; 479 case CS8: 480 prompt_Printf(arg->prompt, ", cs8"); 481 break; 482 } 483 if (p->cfg.parity & PARENB) { 484 if (p->cfg.parity & PARODD) 485 prompt_Printf(arg->prompt, ", odd parity"); 486 else 487 prompt_Printf(arg->prompt, ", even parity"); 488 } else 489 prompt_Printf(arg->prompt, ", no parity"); 490 491 prompt_Printf(arg->prompt, ", CTS/RTS %s\n", (p->cfg.rts_cts ? "on" : "off")); 492 493 prompt_Printf(arg->prompt, " CD check delay: "); 494 cd = p->handler ? &p->handler->cd : &p->cfg.cd; 495 if (cd->necessity == CD_NOTREQUIRED) 496 prompt_Printf(arg->prompt, "no cd"); 497 else if (p->cfg.cd.necessity == CD_DEFAULT) { 498 prompt_Printf(arg->prompt, "device specific"); 499 } else { 500 prompt_Printf(arg->prompt, "%d second%s", p->cfg.cd.delay, 501 p->cfg.cd.delay == 1 ? "" : "s"); 502 if (p->cfg.cd.necessity == CD_REQUIRED) 503 prompt_Printf(arg->prompt, " (required!)"); 504 } 505 prompt_Printf(arg->prompt, "\n\n"); 506 507 throughput_disp(&p->link.stats.total, arg->prompt); 508 509 return 0; 510} 511 512void 513physical_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 514 const fd_set *fdset) 515{ 516 struct physical *p = descriptor2physical(d); 517 u_char *rbuff; 518 int n, found; 519 520 rbuff = p->input.buf + p->input.sz; 521 522 /* something to read */ 523 n = physical_Read(p, rbuff, sizeof p->input.buf - p->input.sz); 524 log_Printf(LogDEBUG, "%s: DescriptorRead: read %d/%d from %d\n", 525 p->link.name, n, (int)(sizeof p->input.buf - p->input.sz), p->fd); 526 if (n <= 0) { 527 if (n < 0) 528 log_Printf(LogPHASE, "%s: read (%d): %s\n", p->link.name, p->fd, 529 strerror(errno)); 530 else 531 log_Printf(LogPHASE, "%s: read (%d): Got zero bytes\n", 532 p->link.name, p->fd); 533 datalink_Down(p->dl, CLOSE_NORMAL); 534 return; 535 } 536 537 rbuff -= p->input.sz; 538 n += p->input.sz; 539 540 if (p->link.lcp.fsm.state <= ST_CLOSED) { 541 if (p->type != PHYS_DEDICATED) { 542 found = hdlc_Detect((u_char const **)&rbuff, n, physical_IsSync(p)); 543 if (rbuff != p->input.buf) 544 log_WritePrompts(p->dl, "%.*s", (int)(rbuff - p->input.buf), 545 p->input.buf); 546 p->input.sz = n - (rbuff - p->input.buf); 547 548 if (found) { 549 /* LCP packet is detected. Turn ourselves into packet mode */ 550 log_Printf(LogPHASE, "%s: PPP packet detected, coming up\n", 551 p->link.name); 552 log_SetTtyCommandMode(p->dl); 553 datalink_Up(p->dl, 0, 1); 554 link_PullPacket(&p->link, rbuff, p->input.sz, bundle); 555 p->input.sz = 0; 556 } else 557 bcopy(rbuff, p->input.buf, p->input.sz); 558 } else 559 /* In -dedicated mode, we just discard input until LCP is started */ 560 p->input.sz = 0; 561 } else if (n > 0) 562 link_PullPacket(&p->link, rbuff, n, bundle); 563} 564 565struct physical * 566iov2physical(struct datalink *dl, struct iovec *iov, int *niov, int maxiov, 567 int fd, int *auxfd, int *nauxfd) 568{ 569 struct physical *p; 570 int len, h, type; 571 572 p = (struct physical *)iov[(*niov)++].iov_base; 573 p->link.name = dl->name; 574 memset(p->link.Queue, '\0', sizeof p->link.Queue); 575 576 p->desc.UpdateSet = physical_UpdateSet; 577 p->desc.IsSet = physical_IsSet; 578 p->desc.Read = physical_DescriptorRead; 579 p->desc.Write = physical_DescriptorWrite; 580 p->type = PHYS_DIRECT; 581 p->dl = dl; 582 len = strlen(_PATH_DEV); 583 p->out = NULL; 584 p->connect_count = 1; 585 586 physical_SetDevice(p, p->name.full); 587 588 p->link.lcp.fsm.bundle = dl->bundle; 589 p->link.lcp.fsm.link = &p->link; 590 memset(&p->link.lcp.fsm.FsmTimer, '\0', sizeof p->link.lcp.fsm.FsmTimer); 591 memset(&p->link.lcp.fsm.OpenTimer, '\0', sizeof p->link.lcp.fsm.OpenTimer); 592 memset(&p->link.lcp.fsm.StoppedTimer, '\0', 593 sizeof p->link.lcp.fsm.StoppedTimer); 594 p->link.lcp.fsm.parent = &dl->fsmp; 595 lcp_SetupCallbacks(&p->link.lcp); 596 597 p->link.ccp.fsm.bundle = dl->bundle; 598 p->link.ccp.fsm.link = &p->link; 599 /* Our in.state & out.state are NULL (no link-level ccp yet) */ 600 memset(&p->link.ccp.fsm.FsmTimer, '\0', sizeof p->link.ccp.fsm.FsmTimer); 601 memset(&p->link.ccp.fsm.OpenTimer, '\0', sizeof p->link.ccp.fsm.OpenTimer); 602 memset(&p->link.ccp.fsm.StoppedTimer, '\0', 603 sizeof p->link.ccp.fsm.StoppedTimer); 604 p->link.ccp.fsm.parent = &dl->fsmp; 605 ccp_SetupCallbacks(&p->link.ccp); 606 607 p->hdlc.lqm.owner = &p->link.lcp; 608 p->hdlc.ReportTimer.state = TIMER_STOPPED; 609 p->hdlc.lqm.timer.state = TIMER_STOPPED; 610 611 p->fd = fd; 612 p->link.stats.total.in.SampleOctets = (long long *)iov[(*niov)++].iov_base; 613 p->link.stats.total.out.SampleOctets = (long long *)iov[(*niov)++].iov_base; 614 p->link.stats.parent = dl->bundle->ncp.mp.active ? 615 &dl->bundle->ncp.mp.link.stats.total : NULL; 616 p->link.stats.gather = 1; 617 618 type = (long)p->handler; 619 p->handler = NULL; 620 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 621 p->handler = (*devices[h].iov2device)(type, p, iov, niov, maxiov, 622 auxfd, nauxfd); 623 if (p->handler == NULL) { 624 log_Printf(LogPHASE, "%s: Unknown link type\n", p->link.name); 625 free(iov[(*niov)++].iov_base); 626 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 627 } else 628 log_Printf(LogPHASE, "%s: Device %s, link type is %s\n", 629 p->link.name, p->name.full, p->handler->name); 630 631 if (p->hdlc.lqm.method && p->hdlc.lqm.timer.load) 632 lqr_reStart(&p->link.lcp); 633 hdlc_StartTimer(&p->hdlc); 634 635 throughput_restart(&p->link.stats.total, "physical throughput", 636 Enabled(dl->bundle, OPT_THROUGHPUT)); 637 638 return p; 639} 640 641int 642physical_MaxDeviceSize() 643{ 644 int biggest, sz, n; 645 646 biggest = sizeof(struct device); 647 for (sz = n = 0; n < NDEVICES; n++) 648 if (devices[n].DeviceSize) { 649 sz = (*devices[n].DeviceSize)(); 650 if (biggest < sz) 651 biggest = sz; 652 } 653 654 return biggest; 655} 656 657int 658physical2iov(struct physical *p, struct iovec *iov, int *niov, int maxiov, 659 int *auxfd, int *nauxfd) 660{ 661 struct device *h; 662 int sz; 663 664 h = NULL; 665 if (p) { 666 hdlc_StopTimer(&p->hdlc); 667 lqr_StopTimer(p); 668 timer_Stop(&p->link.lcp.fsm.FsmTimer); 669 timer_Stop(&p->link.ccp.fsm.FsmTimer); 670 timer_Stop(&p->link.lcp.fsm.OpenTimer); 671 timer_Stop(&p->link.ccp.fsm.OpenTimer); 672 timer_Stop(&p->link.lcp.fsm.StoppedTimer); 673 timer_Stop(&p->link.ccp.fsm.StoppedTimer); 674 if (p->handler) { 675 h = p->handler; 676 p->handler = (struct device *)(long)p->handler->type; 677 } 678 679 if (Enabled(p->dl->bundle, OPT_KEEPSESSION) || 680 tcgetpgrp(p->fd) == getpgrp()) 681 p->session_owner = getpid(); /* So I'll eventually get HUP'd */ 682 else 683 p->session_owner = (pid_t)-1; 684 timer_Stop(&p->link.stats.total.Timer); 685 } 686 687 if (*niov + 2 >= maxiov) { 688 log_Printf(LogERROR, "physical2iov: No room for physical + throughput" 689 " + device !\n"); 690 if (p) 691 free(p); 692 return -1; 693 } 694 695 iov[*niov].iov_base = (void *)p; 696 iov[*niov].iov_len = sizeof *p; 697 (*niov)++; 698 699 iov[*niov].iov_base = p ? (void *)p->link.stats.total.in.SampleOctets : NULL; 700 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 701 (*niov)++; 702 iov[*niov].iov_base = p ? (void *)p->link.stats.total.out.SampleOctets : NULL; 703 iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long); 704 (*niov)++; 705 706 sz = physical_MaxDeviceSize(); 707 if (p) { 708 if (h && h->device2iov) 709 (*h->device2iov)(h, iov, niov, maxiov, auxfd, nauxfd); 710 else { 711 iov[*niov].iov_base = malloc(sz); 712 if (h) 713 memcpy(iov[*niov].iov_base, h, sizeof *h); 714 iov[*niov].iov_len = sz; 715 (*niov)++; 716 } 717 } else { 718 iov[*niov].iov_base = NULL; 719 iov[*niov].iov_len = sz; 720 (*niov)++; 721 } 722 723 return p ? p->fd : 0; 724} 725 726const char * 727physical_LockedDevice(struct physical *p) 728{ 729 if (p->fd >= 0 && *p->name.full == '/' && p->type != PHYS_DIRECT) 730 return p->name.base; 731 732 return NULL; 733} 734 735void 736physical_ChangedPid(struct physical *p, pid_t newpid) 737{ 738 if (physical_LockedDevice(p)) { 739 int res; 740 741 if ((res = ID0uu_lock_txfr(p->name.base, newpid)) != UU_LOCK_OK) 742 log_Printf(LogPHASE, "uu_lock_txfr: %s\n", uu_lockerr(res)); 743 } 744} 745 746int 747physical_IsSync(struct physical *p) 748{ 749 return p->cfg.speed == 0; 750} 751 752const char *physical_GetDevice(struct physical *p) 753{ 754 return p->name.full; 755} 756 757void 758physical_SetDeviceList(struct physical *p, int argc, const char *const *argv) 759{ 760 int f, pos; 761 762 p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0'; 763 for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) { 764 if (pos) 765 p->cfg.devlist[pos++] = '\0'; 766 strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1); 767 pos += strlen(p->cfg.devlist + pos); 768 } 769 p->cfg.ndev = f; 770} 771 772void 773physical_SetSync(struct physical *p) 774{ 775 p->cfg.speed = 0; 776} 777 778int 779physical_SetRtsCts(struct physical *p, int enable) 780{ 781 p->cfg.rts_cts = enable ? 1 : 0; 782 return 1; 783} 784 785ssize_t 786physical_Read(struct physical *p, void *buf, size_t nbytes) 787{ 788 ssize_t ret; 789 790 if (p->handler && p->handler->read) 791 ret = (*p->handler->read)(p, buf, nbytes); 792 else 793 ret = read(p->fd, buf, nbytes); 794 795 log_DumpBuff(LogPHYSICAL, "read", buf, ret); 796 797 return ret; 798} 799 800ssize_t 801physical_Write(struct physical *p, const void *buf, size_t nbytes) 802{ 803 log_DumpBuff(LogPHYSICAL, "write", buf, nbytes); 804 805 if (p->handler && p->handler->write) 806 return (*p->handler->write)(p, buf, nbytes); 807 808 return write(p->fd, buf, nbytes); 809} 810 811int 812physical_doUpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, 813 int *n, int force) 814{ 815 struct physical *p = descriptor2physical(d); 816 int sets; 817 818 sets = 0; 819 if (p->fd >= 0) { 820 if (r) { 821 FD_SET(p->fd, r); 822 log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd); 823 sets++; 824 } 825 if (e) { 826 FD_SET(p->fd, e); 827 log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd); 828 sets++; 829 } 830 if (w && (force || link_QueueLen(&p->link) || p->out)) { 831 FD_SET(p->fd, w); 832 log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd); 833 sets++; 834 } 835 if (sets && *n < p->fd + 1) 836 *n = p->fd + 1; 837 } 838 839 return sets; 840} 841 842int 843physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 844{ 845 if (p->handler && p->handler->removefromset) 846 return (*p->handler->removefromset)(p, r, w, e); 847 else { 848 int sets; 849 850 sets = 0; 851 if (p->fd >= 0) { 852 if (r && FD_ISSET(p->fd, r)) { 853 FD_CLR(p->fd, r); 854 log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd); 855 sets++; 856 } 857 if (e && FD_ISSET(p->fd, e)) { 858 FD_CLR(p->fd, e); 859 log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd); 860 sets++; 861 } 862 if (w && FD_ISSET(p->fd, w)) { 863 FD_CLR(p->fd, w); 864 log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd); 865 sets++; 866 } 867 } 868 869 return sets; 870 } 871} 872 873int 874physical_IsSet(struct fdescriptor *d, const fd_set *fdset) 875{ 876 struct physical *p = descriptor2physical(d); 877 return p->fd >= 0 && FD_ISSET(p->fd, fdset); 878} 879 880void 881physical_Login(struct physical *p, const char *name) 882{ 883 if (p->type == PHYS_DIRECT && *p->name.base && !p->Utmp) { 884 struct utmp ut; 885 const char *connstr; 886 char *colon; 887 888 memset(&ut, 0, sizeof ut); 889 time(&ut.ut_time); 890 strncpy(ut.ut_name, name, sizeof ut.ut_name); 891 if (p->handler && (p->handler->type == TCP_DEVICE || 892 p->handler->type == UDP_DEVICE)) { 893 strncpy(ut.ut_line, PPPOTCPLINE, sizeof ut.ut_line); 894 strncpy(ut.ut_host, p->name.base, sizeof ut.ut_host); 895 colon = memchr(ut.ut_host, ':', sizeof ut.ut_host); 896 if (colon) 897 *colon = '\0'; 898 } else 899 strncpy(ut.ut_line, p->name.base, sizeof ut.ut_line); 900 if ((connstr = getenv("CONNECT"))) 901 /* mgetty sets this to the connection speed */ 902 strncpy(ut.ut_host, connstr, sizeof ut.ut_host); 903 ID0login(&ut); 904 p->Utmp = ut.ut_time; 905 } 906} 907 908int 909physical_SetMode(struct physical *p, int mode) 910{ 911 if ((p->type & (PHYS_DIRECT|PHYS_DEDICATED) || 912 mode & (PHYS_DIRECT|PHYS_DEDICATED)) && 913 (!(p->type & PHYS_DIRECT) || !(mode & PHYS_BACKGROUND))) { 914 /* Note: The -direct -> -background is for callback ! */ 915 log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name, 916 mode2Nam(p->type), mode2Nam(mode)); 917 return 0; 918 } 919 p->type = mode; 920 return 1; 921} 922 923void 924physical_DeleteQueue(struct physical *p) 925{ 926 if (p->out) { 927 m_freem(p->out); 928 p->out = NULL; 929 } 930 link_DeleteQueue(&p->link); 931} 932 933void 934physical_SetDevice(struct physical *p, const char *name) 935{ 936 int len = strlen(_PATH_DEV); 937 938 if (name != p->name.full) { 939 strncpy(p->name.full, name, sizeof p->name.full - 1); 940 p->name.full[sizeof p->name.full - 1] = '\0'; 941 } 942 p->name.base = *p->name.full == '!' ? p->name.full + 1 : 943 strncmp(p->name.full, _PATH_DEV, len) ? 944 p->name.full : p->name.full + len; 945} 946 947static void 948physical_Found(struct physical *p) 949{ 950 FILE *lockfile; 951 char fn[MAXPATHLEN]; 952 953 if (*p->name.full == '/') { 954 snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base); 955 lockfile = ID0fopen(fn, "w"); 956 if (lockfile != NULL) { 957 fprintf(lockfile, "%s%d\n", TUN_NAME, p->dl->bundle->unit); 958 fclose(lockfile); 959 } 960#ifndef RELEASE_CRUNCH 961 else 962 log_Printf(LogALERT, "%s: Can't create %s: %s\n", 963 p->link.name, fn, strerror(errno)); 964#endif 965 } 966 967 throughput_start(&p->link.stats.total, "physical throughput", 968 Enabled(p->dl->bundle, OPT_THROUGHPUT)); 969 p->connect_count++; 970 p->input.sz = 0; 971 972 log_Printf(LogPHASE, "%s: Connected!\n", p->link.name); 973} 974 975int 976physical_Open(struct physical *p, struct bundle *bundle) 977{ 978 int devno, h, wasfd, err; 979 char *dev; 980 981 if (p->fd >= 0) 982 log_Printf(LogDEBUG, "%s: Open: Modem is already open!\n", p->link.name); 983 /* We're going back into "term" mode */ 984 else if (p->type == PHYS_DIRECT) { 985 physical_SetDevice(p, ""); 986 p->fd = STDIN_FILENO; 987 for (h = 0; h < NDEVICES && p->handler == NULL && p->fd >= 0; h++) 988 p->handler = (*devices[h].create)(p); 989 if (p->fd >= 0) { 990 if (p->handler == NULL) { 991 physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE); 992 log_Printf(LogDEBUG, "%s: stdin is unidentified\n", p->link.name); 993 } 994 physical_Found(p); 995 } 996 } else { 997 dev = p->cfg.devlist; 998 devno = 0; 999 while (devno < p->cfg.ndev && p->fd < 0) { 1000 physical_SetDevice(p, dev); 1001 if (physical_Lock(p)) { 1002 err = 0; 1003 1004 if (*p->name.full == '/') { 1005 p->fd = ID0open(p->name.full, O_RDWR | O_NONBLOCK); 1006 if (p->fd < 0) 1007 err = errno; 1008 } 1009 1010 wasfd = p->fd; 1011 for (h = 0; h < NDEVICES && p->handler == NULL; h++) 1012 if ((p->handler = (*devices[h].create)(p)) == NULL && wasfd != p->fd) 1013 break; 1014 1015 if (p->fd < 0) { 1016 if (h == NDEVICES) { 1017 if (err) 1018 log_Printf(LogWARN, "%s: %s: %s\n", p->link.name, p->name.full, 1019 strerror(errno)); 1020 else 1021 log_Printf(LogWARN, "%s: Device (%s) must begin with a '/'," 1022 " a '!' or contain at least one ':'\n", p->link.name, 1023 p->name.full); 1024 } 1025 physical_Unlock(p); 1026 } else 1027 physical_Found(p); 1028 } 1029 dev += strlen(dev) + 1; 1030 devno++; 1031 } 1032 } 1033 1034 return p->fd; 1035} 1036 1037void 1038physical_SetupStack(struct physical *p, const char *who, int how) 1039{ 1040 link_EmptyStack(&p->link); 1041 if (how == PHYSICAL_FORCE_SYNC || how == PHYSICAL_FORCE_SYNCNOACF || 1042 (how == PHYSICAL_NOFORCE && physical_IsSync(p))) 1043 link_Stack(&p->link, &synclayer); 1044 else { 1045 link_Stack(&p->link, &asynclayer); 1046 link_Stack(&p->link, &hdlclayer); 1047 } 1048 if (how != PHYSICAL_FORCE_SYNCNOACF) 1049 link_Stack(&p->link, &acflayer); 1050 link_Stack(&p->link, &protolayer); 1051 link_Stack(&p->link, &lqrlayer); 1052 link_Stack(&p->link, &ccplayer); 1053 link_Stack(&p->link, &vjlayer); 1054#ifndef NONAT 1055 link_Stack(&p->link, &natlayer); 1056#endif 1057 if (how == PHYSICAL_FORCE_ASYNC && physical_IsSync(p)) { 1058 log_Printf(LogWARN, "Sync device setting ignored for ``%s'' device\n", who); 1059 p->cfg.speed = MODEM_SPEED; 1060 } else if (how == PHYSICAL_FORCE_SYNC && !physical_IsSync(p)) { 1061 log_Printf(LogWARN, "Async device setting ignored for ``%s'' device\n", 1062 who); 1063 physical_SetSync(p); 1064 } 1065} 1066 1067void 1068physical_StopDeviceTimer(struct physical *p) 1069{ 1070 if (p->handler && p->handler->stoptimer) 1071 (*p->handler->stoptimer)(p); 1072} 1073 1074int 1075physical_AwaitCarrier(struct physical *p) 1076{ 1077 if (p->handler && p->handler->awaitcarrier) 1078 return (*p->handler->awaitcarrier)(p); 1079 1080 return CARRIER_OK; 1081} 1082