1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $ 30 */ 31 32 #define RIPCMDS 33 #include "defs.h" 34 #include "pathnames.h" 35 #include <sys/stat.h> 36 #include <sys/signal.h> 37 #include <fcntl.h> 38 39 #if !defined(sgi) && !defined(__NetBSD__) 40 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 41 #elif defined(__NetBSD__) 42 __RCSID("$NetBSD$"); 43 #endif 44 45 46 #ifdef sgi 47 /* use *stat64 for files on large filesystems */ 48 #define stat stat64 49 #endif 50 51 #define NRECORDS 50 /* size of circular trace buffer */ 52 53 int tracelevel, new_tracelevel; 54 FILE *ftrace; /* output trace file */ 55 static const char *sigtrace_pat = "%s"; 56 static char savetracename[MAXPATHLEN+1]; 57 char inittracename[MAXPATHLEN+1]; 58 int file_trace; /* 1=tracing to file, not stdout */ 59 60 static void trace_dump(void); 61 static void tmsg(const char *, ...) PATTRIB(1,2); 62 63 64 /* convert string to printable characters 65 */ 66 static char * 67 qstring(u_char *s, int len) 68 { 69 static char buf[8*20+1]; 70 char *p; 71 u_char *s2, c; 72 73 74 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 75 c = *s++; 76 if (c == '\0') { 77 for (s2 = s+1; s2 < &s[len]; s2++) { 78 if (*s2 != '\0') 79 break; 80 } 81 if (s2 >= &s[len]) 82 goto exit; 83 } 84 85 if (c >= ' ' && c < 0x7f && c != '\\') { 86 *p++ = c; 87 continue; 88 } 89 *p++ = '\\'; 90 switch (c) { 91 case '\\': 92 *p++ = '\\'; 93 break; 94 case '\n': 95 *p++= 'n'; 96 break; 97 case '\r': 98 *p++= 'r'; 99 break; 100 case '\t': 101 *p++ = 't'; 102 break; 103 case '\b': 104 *p++ = 'b'; 105 break; 106 default: 107 p += sprintf(p,"%o",c); 108 break; 109 } 110 } 111 exit: 112 *p = '\0'; 113 return buf; 114 } 115 116 117 /* convert IP address to a string, but not into a single buffer 118 */ 119 char * 120 naddr_ntoa(naddr a) 121 { 122 #define NUM_BUFS 4 123 static int bufno; 124 static struct { 125 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 126 } bufs[NUM_BUFS]; 127 char *s; 128 struct in_addr addr; 129 130 addr.s_addr = a; 131 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 132 bufno = (bufno+1) % NUM_BUFS; 133 return s; 134 #undef NUM_BUFS 135 } 136 137 138 const char * 139 saddr_ntoa(struct sockaddr *sa) 140 { 141 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa)); 142 } 143 144 145 static char * 146 ts(time_t secs) { 147 static char s[20]; 148 149 secs += epoch.tv_sec; 150 #ifdef sgi 151 cftime(s, "%T", &secs); 152 #else 153 memcpy(s, ctime(&secs)+11, 8); 154 s[8] = '\0'; 155 #endif 156 return s; 157 } 158 159 160 /* On each event, display a time stamp. 161 * This assumes that 'now' is update once for each event, and 162 * that at least now.tv_usec changes. 163 */ 164 static struct timeval lastlog_time; 165 166 void 167 lastlog(void) 168 { 169 if (lastlog_time.tv_sec != now.tv_sec 170 || lastlog_time.tv_usec != now.tv_usec) { 171 fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 172 lastlog_time = now; 173 } 174 } 175 176 177 static void 178 tmsg(const char *p, ...) 179 { 180 va_list args; 181 182 if (ftrace != NULL) { 183 lastlog(); 184 va_start(args, p); 185 vfprintf(ftrace, p, args); 186 fputc('\n',ftrace); 187 fflush(ftrace); 188 } 189 } 190 191 192 void 193 trace_close(int zap_stdio) 194 { 195 int fd; 196 197 198 fflush(stdout); 199 fflush(stderr); 200 201 if (ftrace != NULL && zap_stdio) { 202 if (ftrace != stdout) 203 fclose(ftrace); 204 ftrace = NULL; 205 fd = open(_PATH_DEVNULL, O_RDWR); 206 if (isatty(STDIN_FILENO)) 207 dup2(fd, STDIN_FILENO); 208 if (isatty(STDOUT_FILENO)) 209 dup2(fd, STDOUT_FILENO); 210 if (isatty(STDERR_FILENO)) 211 dup2(fd, STDERR_FILENO); 212 close(fd); 213 } 214 lastlog_time.tv_sec = 0; 215 } 216 217 218 void 219 trace_flush(void) 220 { 221 if (ftrace != NULL) { 222 fflush(ftrace); 223 if (ferror(ftrace)) 224 trace_off("tracing off: %s", strerror(ferror(ftrace))); 225 } 226 } 227 228 229 void 230 trace_off(const char *p, ...) 231 { 232 va_list args; 233 234 235 if (ftrace != NULL) { 236 lastlog(); 237 va_start(args, p); 238 vfprintf(ftrace, p, args); 239 fputc('\n',ftrace); 240 } 241 trace_close(file_trace); 242 243 new_tracelevel = tracelevel = 0; 244 } 245 246 247 /* log a change in tracing 248 */ 249 void 250 tracelevel_msg(const char *pat, 251 int dump) /* -1=no dump, 0=default, 1=force */ 252 { 253 static const char *off_msgs[MAX_TRACELEVEL] = { 254 "Tracing actions stopped", 255 "Tracing packets stopped", 256 "Tracing packet contents stopped", 257 "Tracing kernel changes stopped", 258 }; 259 static const char *on_msgs[MAX_TRACELEVEL] = { 260 "Tracing actions started", 261 "Tracing packets started", 262 "Tracing packet contents started", 263 "Tracing kernel changes started", 264 }; 265 u_int old_tracelevel = tracelevel; 266 267 268 if (new_tracelevel < 0) 269 new_tracelevel = 0; 270 else if (new_tracelevel > MAX_TRACELEVEL) 271 new_tracelevel = MAX_TRACELEVEL; 272 273 if (new_tracelevel < tracelevel) { 274 if (new_tracelevel <= 0) { 275 trace_off(pat, off_msgs[0]); 276 } else do { 277 tmsg(pat, off_msgs[tracelevel]); 278 } 279 while (--tracelevel != new_tracelevel); 280 281 } else if (new_tracelevel > tracelevel) { 282 do { 283 tmsg(pat, on_msgs[tracelevel++]); 284 } while (tracelevel != new_tracelevel); 285 } 286 287 if (dump > 0 288 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 289 trace_dump(); 290 } 291 292 293 void 294 set_tracefile(const char *filename, 295 const char *pat, 296 int dump) /* -1=no dump, 0=default, 1=force */ 297 { 298 struct stat stbuf; 299 FILE *n_ftrace; 300 const char *fn; 301 302 303 /* Allow a null filename to increase the level if the trace file 304 * is already open or if coming from a trusted source, such as 305 * a signal or the command line. 306 */ 307 if (filename == NULL || filename[0] == '\0') { 308 filename = NULL; 309 if (ftrace == NULL) { 310 if (inittracename[0] == '\0') { 311 msglog("missing trace file name"); 312 return; 313 } 314 fn = inittracename; 315 } else { 316 fn = NULL; 317 } 318 319 } else if (!strcmp(filename,"dump/../table")) { 320 trace_dump(); 321 return; 322 323 } else { 324 /* Allow the file specified with "-T file" to be reopened, 325 * but require all other names specified over the net to 326 * match the official path. The path can specify a directory 327 * in which the file is to be created. 328 */ 329 if (strcmp(filename, inittracename) 330 #ifdef _PATH_TRACE 331 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 332 || strstr(filename,"../") 333 || 0 > stat(_PATH_TRACE, &stbuf)) 334 #endif 335 ) { 336 msglog("wrong trace file \"%s\"", filename); 337 return; 338 } 339 340 /* If the new tracefile exists, it must be a regular file. 341 */ 342 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 343 msglog("wrong type (%#x) of trace file \"%s\"", 344 stbuf.st_mode, filename); 345 return; 346 } 347 348 fn = filename; 349 } 350 351 if (fn != NULL) { 352 n_ftrace = fopen(fn, "a"); 353 if (n_ftrace == NULL) { 354 msglog("failed to open trace file \"%s\" %s", 355 fn, strerror(errno)); 356 if (fn == inittracename) 357 inittracename[0] = '\0'; 358 return; 359 } 360 361 tmsg("switch to trace file %s", fn); 362 363 trace_close(file_trace = 1); 364 365 if (fn != savetracename) 366 strncpy(savetracename, fn, sizeof(savetracename)-1); 367 ftrace = n_ftrace; 368 369 fflush(stdout); 370 fflush(stderr); 371 dup2(fileno(ftrace), STDOUT_FILENO); 372 dup2(fileno(ftrace), STDERR_FILENO); 373 } 374 375 if (new_tracelevel == 0 || filename == NULL) 376 new_tracelevel++; 377 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL)); 378 } 379 380 381 /* ARGSUSED */ 382 void 383 sigtrace_on(int s UNUSED) 384 { 385 new_tracelevel++; 386 sigtrace_pat = "SIGUSR1: %s"; 387 } 388 389 390 /* ARGSUSED */ 391 void 392 sigtrace_off(int s UNUSED) 393 { 394 new_tracelevel--; 395 sigtrace_pat = "SIGUSR2: %s"; 396 } 397 398 399 /* Set tracing after a signal. 400 */ 401 void 402 set_tracelevel(void) 403 { 404 if (new_tracelevel == tracelevel) 405 return; 406 407 /* If tracing entirely off, and there was no tracefile specified 408 * on the command line, then leave it off. 409 */ 410 if (new_tracelevel > tracelevel && ftrace == NULL) { 411 if (savetracename[0] != '\0') { 412 set_tracefile(savetracename,sigtrace_pat,0); 413 } else if (inittracename[0] != '\0') { 414 set_tracefile(inittracename,sigtrace_pat,0); 415 } else { 416 new_tracelevel = 0; 417 return; 418 } 419 } else { 420 tracelevel_msg(sigtrace_pat, 0); 421 } 422 } 423 424 425 /* display an address 426 */ 427 char * 428 addrname(naddr addr, /* in network byte order */ 429 naddr mask, 430 int force) /* 0=show mask if nonstandard, */ 431 { /* 1=always show mask, 2=never */ 432 #define NUM_BUFS 4 433 static int bufno; 434 static struct { 435 char str[15+20]; 436 } bufs[NUM_BUFS]; 437 char *s, *sp; 438 naddr dmask; 439 int i; 440 441 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 442 bufno = (bufno+1) % NUM_BUFS; 443 444 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 445 sp = &s[strlen(s)]; 446 447 dmask = mask & -mask; 448 if (mask + dmask == 0) { 449 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 450 continue; 451 sprintf(sp, "/%d", 32-i); 452 453 } else { 454 sprintf(sp, " (mask %#x)", (u_int)mask); 455 } 456 } 457 458 return s; 459 #undef NUM_BUFS 460 } 461 462 463 /* display a bit-field 464 */ 465 struct bits { 466 u_int bits_mask; 467 u_int bits_clear; 468 const char *bits_name; 469 }; 470 471 static struct bits if_bits[] = { 472 { IFF_LOOPBACK, 0, "LOOPBACK" }, 473 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 474 { 0, 0, 0} 475 }; 476 477 static struct bits is_bits[] = { 478 { IS_ALIAS, 0, "ALIAS" }, 479 { IS_SUBNET, 0, "" }, 480 { IS_REMOTE, (IS_NO_RDISC 481 | IS_BCAST_RDISC), "REMOTE" }, 482 { IS_PASSIVE, (IS_NO_RDISC 483 | IS_NO_RIP 484 | IS_NO_SUPER_AG 485 | IS_PM_RDISC 486 | IS_NO_AG), "PASSIVE" }, 487 { IS_EXTERNAL, 0, "EXTERNAL" }, 488 { IS_CHECKED, 0, "" }, 489 { IS_ALL_HOSTS, 0, "" }, 490 { IS_ALL_ROUTERS, 0, "" }, 491 { IS_DISTRUST, 0, "DISTRUST" }, 492 { IS_BROKE, IS_SICK, "BROKEN" }, 493 { IS_SICK, 0, "SICK" }, 494 { IS_DUP, 0, "DUPLICATE" }, 495 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 496 { IS_NEED_NET_SYN, 0, "" }, 497 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 498 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 499 { (IS_NO_RIPV1_IN 500 | IS_NO_RIPV2_IN 501 | IS_NO_RIPV1_OUT 502 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 503 { (IS_NO_RIPV1_IN 504 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 505 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 506 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 507 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 508 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 509 { (IS_NO_ADV_IN 510 | IS_NO_SOL_OUT 511 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 512 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 513 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 514 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 515 { IS_ADV_OUT, 0, "RDISC_ADV" }, 516 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 517 { IS_PM_RDISC, 0, "" }, 518 { 0, 0, "%#x"} 519 }; 520 521 static struct bits rs_bits[] = { 522 { RS_IF, 0, "IF" }, 523 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 524 { RS_NET_SYN, 0, "NET_SYN" }, 525 { RS_SUBNET, 0, "" }, 526 { RS_LOCAL, 0, "LOCAL" }, 527 { RS_MHOME, 0, "MHOME" }, 528 { RS_STATIC, 0, "STATIC" }, 529 { RS_RDISC, 0, "RDISC" }, 530 { 0, 0, "%#x"} 531 }; 532 533 534 static void 535 trace_bits(const struct bits *tbl, 536 u_int field, 537 int force) 538 { 539 u_int b; 540 char c; 541 542 if (force) { 543 putc('<', ftrace); 544 c = 0; 545 } else { 546 c = '<'; 547 } 548 549 while (field != 0 550 && (b = tbl->bits_mask) != 0) { 551 if ((b & field) == b) { 552 if (tbl->bits_name[0] != '\0') { 553 if (c) 554 putc(c, ftrace); 555 fprintf(ftrace, "%s", tbl->bits_name); 556 c = '|'; 557 } 558 if (0 == (field &= ~(b | tbl->bits_clear))) 559 break; 560 } 561 tbl++; 562 } 563 if (field != 0 && tbl->bits_name != NULL) { 564 if (c) 565 putc(c, ftrace); 566 fprintf(ftrace, tbl->bits_name, field); 567 c = '|'; 568 } 569 570 if (c != '<' || force) 571 fputs("> ", ftrace); 572 } 573 574 575 char * 576 rtname(naddr dst, 577 naddr mask, 578 naddr gate) 579 { 580 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 581 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 582 int i; 583 584 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 585 sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 586 return buf; 587 } 588 589 590 static void 591 print_rts(struct rt_spare *rts, 592 int force_metric, /* -1=suppress, 0=default */ 593 int force_ifp, /* -1=suppress, 0=default */ 594 int force_router, /* -1=suppress, 0=default, 1=display */ 595 int force_tag, /* -1=suppress, 0=default, 1=display */ 596 int force_time) /* 0=suppress, 1=display */ 597 { 598 int i; 599 600 601 if (force_metric >= 0) 602 fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 603 if (force_ifp >= 0) 604 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 605 "if?" : rts->rts_ifp->int_name)); 606 if (force_router > 0 607 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 608 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router)); 609 if (force_time > 0) 610 fprintf(ftrace, "%s ", ts(rts->rts_time)); 611 if (force_tag > 0 612 || (force_tag == 0 && rts->rts_tag != 0)) 613 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 614 if (rts->rts_de_ag != 0) { 615 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 616 continue; 617 fprintf(ftrace, "de_ag=%d ", i); 618 } 619 620 } 621 622 623 void 624 trace_if(const char *act, 625 struct interface *ifp) 626 { 627 if (!TRACEACTIONS || ftrace == NULL) 628 return; 629 630 lastlog(); 631 fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 632 fprintf(ftrace, "%-15s-->%-15s ", 633 naddr_ntoa(ifp->int_addr), 634 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 635 ? ifp->int_dstaddr : htonl(ifp->int_net)), 636 ifp->int_mask, 1)); 637 if (ifp->int_metric != 0) 638 fprintf(ftrace, "metric=%d ", ifp->int_metric); 639 if (!IS_RIP_OUT_OFF(ifp->int_state) 640 && ifp->int_d_metric != 0) 641 fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 642 trace_bits(if_bits, ifp->int_if_flags, 0); 643 trace_bits(is_bits, ifp->int_state, 0); 644 fputc('\n',ftrace); 645 } 646 647 648 void 649 trace_upslot(struct rt_entry *rt, 650 struct rt_spare *rts, 651 struct rt_spare *new) 652 { 653 if (!TRACEACTIONS || ftrace == NULL) 654 return; 655 656 if (rts->rts_gate == new->rts_gate 657 && rts->rts_router == new->rts_router 658 && rts->rts_metric == new->rts_metric 659 && rts->rts_tag == new->rts_tag 660 && rts->rts_de_ag == new->rts_de_ag) 661 return; 662 663 lastlog(); 664 if (new->rts_gate == 0) { 665 fprintf(ftrace, "Del #%d %-35s ", 666 (int)(rts - rt->rt_spares), 667 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 668 print_rts(rts, 0,0,0,0, 669 (rts != rt->rt_spares 670 || AGE_RT(rt->rt_state,new->rts_ifp))); 671 672 } else if (rts->rts_gate != RIP_DEFAULT) { 673 fprintf(ftrace, "Chg #%d %-35s ", 674 (int)(rts - rt->rt_spares), 675 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 676 print_rts(rts, 0,0, 677 rts->rts_gate != new->rts_gate, 678 rts->rts_tag != new->rts_tag, 679 rts != rt->rt_spares || AGE_RT(rt->rt_state, 680 rt->rt_ifp)); 681 682 fprintf(ftrace, "\n %19s%-16s ", "", 683 (new->rts_gate != rts->rts_gate 684 ? naddr_ntoa(new->rts_gate) : "")); 685 print_rts(new, 686 -(new->rts_metric == rts->rts_metric), 687 -(new->rts_ifp == rts->rts_ifp), 688 0, 689 rts->rts_tag != new->rts_tag, 690 (new->rts_time != rts->rts_time 691 && (rts != rt->rt_spares 692 || AGE_RT(rt->rt_state, new->rts_ifp)))); 693 694 } else { 695 fprintf(ftrace, "Add #%d %-35s ", 696 (int)(rts - rt->rt_spares), 697 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 698 print_rts(new, 0,0,0,0, 699 (rts != rt->rt_spares 700 || AGE_RT(rt->rt_state,new->rts_ifp))); 701 } 702 fputc('\n',ftrace); 703 } 704 705 706 /* miscellaneous message checked by the caller 707 */ 708 void 709 trace_misc(const char *p, ...) 710 { 711 va_list args; 712 713 if (ftrace == NULL) 714 return; 715 716 lastlog(); 717 va_start(args, p); 718 vfprintf(ftrace, p, args); 719 fputc('\n',ftrace); 720 } 721 722 723 /* display a message if tracing actions 724 */ 725 void 726 trace_act(const char *p, ...) 727 { 728 va_list args; 729 730 if (!TRACEACTIONS || ftrace == NULL) 731 return; 732 733 lastlog(); 734 va_start(args, p); 735 vfprintf(ftrace, p, args); 736 fputc('\n',ftrace); 737 } 738 739 740 /* display a message if tracing packets 741 */ 742 void 743 trace_pkt(const char *p, ...) 744 { 745 va_list args; 746 747 if (!TRACEPACKETS || ftrace == NULL) 748 return; 749 750 lastlog(); 751 va_start(args, p); 752 vfprintf(ftrace, p, args); 753 fputc('\n',ftrace); 754 } 755 756 757 void 758 trace_change(struct rt_entry *rt, 759 u_int state, 760 struct rt_spare *new, 761 const char *label) 762 { 763 if (ftrace == NULL) 764 return; 765 766 if (rt->rt_metric == new->rts_metric 767 && rt->rt_gate == new->rts_gate 768 && rt->rt_router == new->rts_router 769 && rt->rt_state == state 770 && rt->rt_tag == new->rts_tag 771 && rt->rt_de_ag == new->rts_de_ag) 772 return; 773 774 lastlog(); 775 fprintf(ftrace, "%s %-35s ", 776 label, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 777 print_rts(rt->rt_spares, 778 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 779 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 780 781 fprintf(ftrace, "\n%*s %19s%-16s ", 782 (int)strlen(label), "", "", 783 (rt->rt_gate != new->rts_gate 784 ? naddr_ntoa(new->rts_gate) : "")); 785 print_rts(new, 786 -(new->rts_metric == rt->rt_metric), 787 -(new->rts_ifp == rt->rt_ifp), 788 0, 789 rt->rt_tag != new->rts_tag, 790 (rt->rt_time != new->rts_time 791 && AGE_RT(rt->rt_state,new->rts_ifp))); 792 if (rt->rt_state != state) 793 trace_bits(rs_bits, state, 1); 794 fputc('\n',ftrace); 795 } 796 797 798 void 799 trace_add_del(const char * action, struct rt_entry *rt) 800 { 801 if (ftrace == NULL) 802 return; 803 804 lastlog(); 805 fprintf(ftrace, "%s %-35s ", 806 action, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 807 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 808 trace_bits(rs_bits, rt->rt_state, 0); 809 fputc('\n',ftrace); 810 } 811 812 813 /* ARGSUSED */ 814 static int 815 walk_trace(struct radix_node *rn, 816 struct walkarg *w UNUSED) 817 { 818 #define RT ((struct rt_entry *)rn) 819 struct rt_spare *rts; 820 int i; 821 822 fprintf(ftrace, " %-35s ", 823 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 824 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 825 trace_bits(rs_bits, RT->rt_state, 0); 826 if (RT->rt_poison_time >= now_garbage 827 && RT->rt_poison_metric < RT->rt_metric) 828 fprintf(ftrace, "pm=%d@%s", 829 RT->rt_poison_metric, ts(RT->rt_poison_time)); 830 831 rts = &RT->rt_spares[1]; 832 for (i = 1; i < NUM_SPARES; i++, rts++) { 833 if (rts->rts_gate != RIP_DEFAULT) { 834 fprintf(ftrace,"\n #%d%15s%-16s ", 835 i, "", naddr_ntoa(rts->rts_gate)); 836 print_rts(rts, 0,0,0,0,1); 837 } 838 } 839 fputc('\n',ftrace); 840 841 return 0; 842 } 843 844 845 static void 846 trace_dump(void) 847 { 848 struct interface *ifp; 849 850 if (ftrace == NULL) 851 return; 852 lastlog(); 853 854 fputs("current daemon state:\n", ftrace); 855 for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next) 856 trace_if("", ifp); 857 rn_walktree(rhead, walk_trace, 0); 858 } 859 860 861 void 862 trace_rip(const char *dir1, const char *dir2, 863 struct sockaddr_in *who, 864 struct interface *ifp, 865 struct rip *msg, 866 int size) /* total size of message */ 867 { 868 struct netinfo *n, *lim; 869 # define NA ((struct netauth*)n) 870 int i, seen_route; 871 872 if (!TRACEPACKETS || ftrace == NULL) 873 return; 874 875 lastlog(); 876 if (msg->rip_cmd >= RIPCMD_MAX 877 || msg->rip_vers == 0) { 878 fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 879 " %s.%d size=%d\n", 880 dir1, msg->rip_vers, msg->rip_cmd, dir2, 881 naddr_ntoa(who->sin_addr.s_addr), 882 ntohs(who->sin_port), 883 size); 884 return; 885 } 886 887 fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 888 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 889 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 890 ifp ? " via " : "", ifp ? ifp->int_name : ""); 891 if (!TRACECONTENTS) 892 return; 893 894 seen_route = 0; 895 switch (msg->rip_cmd) { 896 case RIPCMD_REQUEST: 897 case RIPCMD_RESPONSE: 898 n = msg->rip_nets; 899 lim = (struct netinfo *)((char*)msg + size); 900 for (; n < lim; n++) { 901 if (!seen_route 902 && n->n_family == RIP_AF_UNSPEC 903 && ntohl(n->n_metric) == HOPCNT_INFINITY 904 && msg->rip_cmd == RIPCMD_REQUEST 905 && (n+1 == lim 906 || (n+2 == lim 907 && (n+1)->n_family == RIP_AF_AUTH))) { 908 fputs("\tQUERY ", ftrace); 909 if (n->n_dst != 0) 910 fprintf(ftrace, "%s ", 911 naddr_ntoa(n->n_dst)); 912 if (n->n_mask != 0) 913 fprintf(ftrace, "mask=%#x ", 914 (u_int)ntohl(n->n_mask)); 915 if (n->n_nhop != 0) 916 fprintf(ftrace, "nhop=%s ", 917 naddr_ntoa(n->n_nhop)); 918 if (n->n_tag != 0) 919 fprintf(ftrace, "tag=%#x ", 920 ntohs(n->n_tag)); 921 fputc('\n',ftrace); 922 continue; 923 } 924 925 if (n->n_family == RIP_AF_AUTH) { 926 if (NA->a_type == RIP_AUTH_PW 927 && n == msg->rip_nets) { 928 fprintf(ftrace, "\tPassword" 929 " Authentication:" 930 " \"%s\"\n", 931 qstring(NA->au.au_pw, 932 RIP_AUTH_PW_LEN)); 933 continue; 934 } 935 936 if (NA->a_type == RIP_AUTH_MD5 937 && n == msg->rip_nets) { 938 fprintf(ftrace, 939 "\tMD5 Auth" 940 " pkt_len=%d KeyID=%u" 941 " auth_len=%d" 942 " seqno=%#x" 943 " rsvd=%#x,%#x\n", 944 ntohs(NA->au.a_md5.md5_pkt_len), 945 NA->au.a_md5.md5_keyid, 946 NA->au.a_md5.md5_auth_len, 947 (int)ntohl(NA->au.a_md5.md5_seqno), 948 (int)ntohs(NA->au.a_md5.rsvd[0]), 949 (int)ntohs(NA->au.a_md5.rsvd[1])); 950 continue; 951 } 952 fprintf(ftrace, 953 "\tAuthentication type %d: ", 954 ntohs(NA->a_type)); 955 for (i = 0; 956 i < (int)sizeof(NA->au.au_pw); 957 i++) 958 fprintf(ftrace, "%02x ", 959 NA->au.au_pw[i]); 960 fputc('\n',ftrace); 961 continue; 962 } 963 964 seen_route = 1; 965 if (n->n_family != RIP_AF_INET) { 966 fprintf(ftrace, 967 "\t(af %d) %-18s mask=%#x ", 968 ntohs(n->n_family), 969 naddr_ntoa(n->n_dst), 970 (u_int)ntohl(n->n_mask)); 971 } else if (msg->rip_vers == RIPv1) { 972 fprintf(ftrace, "\t%-18s ", 973 addrname(n->n_dst, ntohl(n->n_mask), 974 n->n_mask==0 ? 2 : 1)); 975 } else { 976 fprintf(ftrace, "\t%-18s ", 977 addrname(n->n_dst, ntohl(n->n_mask), 978 n->n_mask==0 ? 2 : 0)); 979 } 980 fprintf(ftrace, "metric=%-2d ", 981 (u_int)ntohl(n->n_metric)); 982 if (n->n_nhop != 0) 983 fprintf(ftrace, " nhop=%s ", 984 naddr_ntoa(n->n_nhop)); 985 if (n->n_tag != 0) 986 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag)); 987 fputc('\n',ftrace); 988 } 989 if (size != (char *)n - (char *)msg) 990 fprintf(ftrace, "truncated record, len %d\n", size); 991 break; 992 993 case RIPCMD_TRACEON: 994 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 995 msg->rip_tracefile); 996 break; 997 998 case RIPCMD_TRACEOFF: 999 break; 1000 } 1001 } 1002