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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if !defined(lint) && !defined(sgi) && !defined(__NetBSD__) 35 static char sccsid[] = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 36 #elif defined(__NetBSD__) 37 static char rcsid[] = "$NetBSD$"; 38 #endif 39 #ident "$Revision: 1.16 $" 40 41 #define RIPCMDS 42 #include "defs.h" 43 #include "pathnames.h" 44 #include <sys/stat.h> 45 #include <sys/signal.h> 46 #include <fcntl.h> 47 48 49 #ifdef sgi 50 /* use *stat64 for files on large filesystems */ 51 #define stat stat64 52 #endif 53 54 #define NRECORDS 50 /* size of circular trace buffer */ 55 56 int tracelevel, new_tracelevel; 57 FILE *ftrace = stdout; /* output trace file */ 58 static char *sigtrace_pat = "%s\n"; 59 static char savetracename[MAXPATHLEN+1]; 60 char inittracename[MAXPATHLEN+1]; 61 int file_trace; /* 1=tracing to file, not stdout */ 62 63 static void trace_dump(void); 64 65 66 /* convert string to printable characters 67 */ 68 static char * 69 qstring(u_char *s, int len) 70 { 71 static char buf[8*20+1]; 72 char *p; 73 u_char *s2, c; 74 75 76 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 77 c = *s++; 78 if (c == '\0') { 79 for (s2 = s+1; s2 < &s[len]; s2++) { 80 if (*s2 != '\0') 81 break; 82 } 83 if (s2 >= &s[len]) 84 goto exit; 85 } 86 87 if (c >= ' ' && c < 0x7f && c != '\\') { 88 *p++ = c; 89 continue; 90 } 91 *p++ = '\\'; 92 switch (c) { 93 case '\\': 94 *p++ = '\\'; 95 break; 96 case '\n': 97 *p++= 'n'; 98 break; 99 case '\r': 100 *p++= 'r'; 101 break; 102 case '\t': 103 *p++ = 't'; 104 break; 105 case '\b': 106 *p++ = 'b'; 107 break; 108 default: 109 p += sprintf(p,"%o",c); 110 break; 111 } 112 } 113 exit: 114 *p = '\0'; 115 return buf; 116 } 117 118 119 /* convert IP address to a string, but not into a single buffer 120 */ 121 char * 122 naddr_ntoa(naddr a) 123 { 124 #define NUM_BUFS 4 125 static int bufno; 126 static struct { 127 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 128 } bufs[NUM_BUFS]; 129 char *s; 130 struct in_addr addr; 131 132 addr.s_addr = a; 133 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 134 bufno = (bufno+1) % NUM_BUFS; 135 return s; 136 #undef NUM_BUFS 137 } 138 139 140 char * 141 saddr_ntoa(struct sockaddr *sa) 142 { 143 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 144 } 145 146 147 static char * 148 ts(time_t secs) { 149 static char s[20]; 150 151 secs += epoch.tv_sec; 152 #ifdef sgi 153 (void)cftime(s, "%T", &secs); 154 #else 155 bcopy(ctime(&secs)+11, s, 8); 156 s[8] = '\0'; 157 #endif 158 return s; 159 } 160 161 162 /* On each event, display a time stamp. 163 * This assumes that 'now' is update once for each event, and 164 * that at least now.tv_usec changes. 165 */ 166 static struct timeval lastlog_time; 167 168 void 169 lastlog(void) 170 { 171 if (lastlog_time.tv_sec != now.tv_sec 172 || lastlog_time.tv_usec != now.tv_usec) { 173 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 174 lastlog_time = now; 175 } 176 } 177 178 179 static void 180 tmsg(char *p, ...) 181 { 182 va_list args; 183 184 if (ftrace != 0) { 185 lastlog(); 186 va_start(args, p); 187 vfprintf(ftrace, p, args); 188 fflush(ftrace); 189 } 190 } 191 192 193 static void 194 trace_close(void) 195 { 196 int fd; 197 198 199 fflush(stdout); 200 fflush(stderr); 201 202 if (ftrace != 0 && file_trace) { 203 if (ftrace != stdout) 204 fclose(ftrace); 205 ftrace = 0; 206 fd = open(_PATH_DEVNULL, O_RDWR); 207 (void)dup2(fd, STDIN_FILENO); 208 (void)dup2(fd, STDOUT_FILENO); 209 (void)dup2(fd, STDERR_FILENO); 210 (void)close(fd); 211 } 212 lastlog_time.tv_sec = 0; 213 } 214 215 216 void 217 trace_flush(void) 218 { 219 if (ftrace != 0) { 220 fflush(ftrace); 221 if (ferror(ftrace)) 222 trace_off("tracing off: ", strerror(ferror(ftrace))); 223 } 224 } 225 226 227 void 228 trace_off(char *p, ...) 229 { 230 va_list args; 231 232 233 if (ftrace != 0) { 234 lastlog(); 235 va_start(args, p); 236 vfprintf(ftrace, p, args); 237 } 238 trace_close(); 239 240 new_tracelevel = tracelevel = 0; 241 } 242 243 244 /* log a change in tracing 245 */ 246 void 247 tracelevel_msg(char *pat, 248 int dump) /* -1=no dump, 0=default, 1=force */ 249 { 250 static char *off_msgs[MAX_TRACELEVEL] = { 251 "Tracing actions stopped", 252 "Tracing packets stopped", 253 "Tracing packet contents stopped", 254 "Tracing kernel changes stopped", 255 }; 256 static char *on_msgs[MAX_TRACELEVEL] = { 257 "Tracing actions started", 258 "Tracing packets started", 259 "Tracing packet contents started", 260 "Tracing kernel changes started", 261 }; 262 u_int old_tracelevel = tracelevel; 263 264 265 if (new_tracelevel < 0) 266 new_tracelevel = 0; 267 else if (new_tracelevel > MAX_TRACELEVEL) 268 new_tracelevel = MAX_TRACELEVEL; 269 270 if (new_tracelevel < tracelevel) { 271 if (new_tracelevel <= 0) { 272 trace_off(pat, off_msgs[0]); 273 } else do { 274 tmsg(pat, off_msgs[tracelevel]); 275 } 276 while (--tracelevel != new_tracelevel); 277 278 } else if (new_tracelevel > tracelevel) { 279 do { 280 tmsg(pat, on_msgs[tracelevel++]); 281 } while (tracelevel != new_tracelevel); 282 } 283 284 if (dump > 0 285 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 286 trace_dump(); 287 } 288 289 290 void 291 set_tracefile(char *filename, 292 char *pat, 293 int dump) /* -1=no dump, 0=default, 1=force */ 294 { 295 struct stat stbuf; 296 FILE *n_ftrace; 297 char *fn; 298 299 300 /* Allow a null filename to increase the level if the trace file 301 * is already open or if coming from a trusted source, such as 302 * a signal or the command line. 303 */ 304 if (filename == 0 || filename[0] == '\0') { 305 filename = 0; 306 if (ftrace == 0) { 307 if (inittracename[0] == '\0') { 308 msglog("missing trace file name"); 309 return; 310 } 311 fn = inittracename; 312 } else { 313 fn = 0; 314 } 315 316 } else if (!strcmp(filename,"dump/../table")) { 317 trace_dump(); 318 return; 319 320 } else { 321 /* Allow the file specified with "-T file" to be reopened, 322 * but require all other names specified over the net to 323 * match the official path. The path can specify a directory 324 * in which the file is to be created. 325 */ 326 if (strcmp(filename, inittracename) 327 #ifdef _PATH_TRACE 328 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 329 || strstr(filename,"../") 330 || 0 > stat(_PATH_TRACE, &stbuf)) 331 #endif 332 ) { 333 msglog("wrong trace file \"%s\"", filename); 334 return; 335 } 336 337 /* If the new tracefile exists, it must be a regular file. 338 */ 339 if (stat(filename, &stbuf) >= 0 340 && (stbuf.st_mode & S_IFMT) != S_IFREG) { 341 msglog("wrong type (%#x) of trace file \"%s\"", 342 stbuf.st_mode, filename); 343 return; 344 } 345 346 fn = filename; 347 } 348 349 if (fn != 0) { 350 n_ftrace = fopen(fn, "a"); 351 if (n_ftrace == 0) { 352 msglog("failed to open trace file \"%s\" %s", 353 fn, strerror(errno)); 354 if (fn == inittracename) 355 inittracename[0] = '\0'; 356 return; 357 } 358 359 tmsg("switch to trace file %s\n", fn); 360 361 file_trace = 1; 362 trace_close(); 363 364 if (fn != savetracename) 365 strncpy(savetracename, fn, sizeof(savetracename)-1); 366 ftrace = n_ftrace; 367 368 fflush(stdout); 369 fflush(stderr); 370 dup2(fileno(ftrace), STDOUT_FILENO); 371 dup2(fileno(ftrace), STDERR_FILENO); 372 } 373 374 if (new_tracelevel == 0 || filename == 0) 375 new_tracelevel++; 376 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 377 } 378 379 380 /* ARGSUSED */ 381 void 382 sigtrace_on(int s) 383 { 384 new_tracelevel++; 385 sigtrace_pat = "SIGUSR1: %s\n"; 386 } 387 388 389 /* ARGSUSED */ 390 void 391 sigtrace_off(int s) 392 { 393 new_tracelevel--; 394 sigtrace_pat = "SIGUSR2: %s\n"; 395 } 396 397 398 /* Set tracing after a signal. 399 */ 400 void 401 set_tracelevel(void) 402 { 403 if (new_tracelevel == tracelevel) 404 return; 405 406 /* If tracing entirely off, and there was no tracefile specified 407 * on the command line, then leave it off. 408 */ 409 if (new_tracelevel > tracelevel && ftrace == 0) { 410 if (savetracename[0] != '\0') { 411 set_tracefile(savetracename,sigtrace_pat,0); 412 } else if (inittracename[0] != '\0') { 413 set_tracefile(inittracename,sigtrace_pat,0); 414 } else { 415 new_tracelevel = 0; 416 return; 417 } 418 } else { 419 tracelevel_msg(sigtrace_pat, 0); 420 } 421 } 422 423 424 /* display an address 425 */ 426 char * 427 addrname(naddr addr, /* in network byte order */ 428 naddr mask, 429 int force) /* 0=show mask if nonstandard, */ 430 { /* 1=always show mask, 2=never */ 431 #define NUM_BUFS 4 432 static int bufno; 433 static struct { 434 char str[15+20]; 435 } bufs[NUM_BUFS]; 436 char *s, *sp; 437 naddr dmask; 438 int i; 439 440 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 441 bufno = (bufno+1) % NUM_BUFS; 442 443 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 444 sp = &s[strlen(s)]; 445 446 dmask = mask & -mask; 447 if (mask + dmask == 0) { 448 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 449 continue; 450 (void)sprintf(sp, "/%d", 32-i); 451 452 } else { 453 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 454 } 455 } 456 457 return s; 458 #undef NUM_BUFS 459 } 460 461 462 /* display a bit-field 463 */ 464 struct bits { 465 int bits_mask; 466 int bits_clear; 467 char *bits_name; 468 }; 469 470 static struct bits if_bits[] = { 471 { IFF_LOOPBACK, 0, "LOOPBACK" }, 472 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 473 { 0, 0, 0} 474 }; 475 476 static struct bits is_bits[] = { 477 { IS_ALIAS, 0, "ALIAS" }, 478 { IS_SUBNET, 0, "" }, 479 { IS_REMOTE, (IS_NO_RDISC 480 | IS_BCAST_RDISC), "REMOTE" }, 481 { IS_PASSIVE, (IS_NO_RDISC 482 | IS_NO_RIP 483 | IS_NO_SUPER_AG 484 | IS_PM_RDISC 485 | IS_NO_AG), "PASSIVE" }, 486 { IS_EXTERNAL, 0, "EXTERNAL" }, 487 { IS_CHECKED, 0, "" }, 488 { IS_ALL_HOSTS, 0, "" }, 489 { IS_ALL_ROUTERS, 0, "" }, 490 { IS_DISTRUST, 0, "DISTRUST" }, 491 { IS_BROKE, IS_SICK, "BROKEN" }, 492 { IS_SICK, 0, "SICK" }, 493 { IS_DUP, 0, "DUPLICATE" }, 494 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 495 { IS_NEED_NET_SYN, 0, "" }, 496 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 497 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 498 { (IS_NO_RIPV1_IN 499 | IS_NO_RIPV2_IN 500 | IS_NO_RIPV1_OUT 501 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 502 { (IS_NO_RIPV1_IN 503 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 504 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 505 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 506 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 507 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 508 { (IS_NO_ADV_IN 509 | IS_NO_SOL_OUT 510 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 511 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 512 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 513 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 514 { IS_ADV_OUT, 0, "RDISC_ADV" }, 515 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 516 { IS_PM_RDISC, 0, "" }, 517 { 0, 0, "%#x"} 518 }; 519 520 static struct bits rs_bits[] = { 521 { RS_IF, 0, "IF" }, 522 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 523 { RS_NET_SYN, 0, "NET_SYN" }, 524 { RS_SUBNET, 0, "" }, 525 { RS_LOCAL, 0, "LOCAL" }, 526 { RS_MHOME, 0, "MHOME" }, 527 { RS_STATIC, 0, "STATIC" }, 528 { RS_RDISC, 0, "RDISC" }, 529 { 0, 0, "%#x"} 530 }; 531 532 533 static void 534 trace_bits(struct bits *tbl, 535 u_int field, 536 int force) 537 { 538 int b; 539 char c; 540 541 if (force) { 542 (void)putc('<', ftrace); 543 c = 0; 544 } else { 545 c = '<'; 546 } 547 548 while (field != 0 549 && (b = tbl->bits_mask) != 0) { 550 if ((b & field) == b) { 551 if (tbl->bits_name[0] != '\0') { 552 if (c) 553 (void)putc(c, ftrace); 554 (void)fprintf(ftrace, "%s", tbl->bits_name); 555 c = '|'; 556 } 557 if (0 == (field &= ~(b | tbl->bits_clear))) 558 break; 559 } 560 tbl++; 561 } 562 if (field != 0 && tbl->bits_name != 0) { 563 if (c) 564 (void)putc(c, ftrace); 565 (void)fprintf(ftrace, tbl->bits_name, field); 566 c = '|'; 567 } 568 569 if (c != '<' || force) 570 (void)fputs("> ", ftrace); 571 } 572 573 574 static char * 575 trace_pair(naddr dst, 576 naddr mask, 577 char *gate) 578 { 579 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 580 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 581 int i; 582 583 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 584 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), gate); 585 return buf; 586 } 587 588 589 static void 590 print_rts(struct rt_spare *rts, 591 int force_metric, /* -1=suppress, 0=default */ 592 int force_ifp, /* -1=suppress, 0=default */ 593 int force_router, /* -1=suppress, 0=default, 1=display */ 594 int force_tag, /* -1=suppress, 0=default, 1=display */ 595 int force_time) /* 0=suppress, 1=display */ 596 { 597 if (force_metric >= 0) 598 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 599 if (force_ifp >= 0) 600 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 601 "if?" : rts->rts_ifp->int_name)); 602 if (force_router > 0 603 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 604 (void)fprintf(ftrace, "router=%s ", 605 naddr_ntoa(rts->rts_router)); 606 if (force_time > 0) 607 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 608 if (force_tag > 0 609 || (force_tag == 0 && rts->rts_tag != 0)) 610 (void)fprintf(ftrace, "tag=%#x ", 611 ntohs(rts->rts_tag)); 612 } 613 614 615 void 616 trace_if(char *act, 617 struct interface *ifp) 618 { 619 if (!TRACEACTIONS || ftrace == 0) 620 return; 621 622 lastlog(); 623 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 624 (void)fprintf(ftrace, "%-15s-->%-15s ", 625 naddr_ntoa(ifp->int_addr), 626 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 627 ? ifp->int_dstaddr 628 : htonl(ifp->int_net)), 629 ifp->int_mask, 1)); 630 if (ifp->int_metric != 0) 631 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 632 if (!IS_RIP_OUT_OFF(ifp->int_state) 633 && ifp->int_d_metric != 0) 634 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 635 trace_bits(if_bits, ifp->int_if_flags, 0); 636 trace_bits(is_bits, ifp->int_state, 0); 637 (void)fputc('\n',ftrace); 638 } 639 640 641 void 642 trace_upslot(struct rt_entry *rt, 643 struct rt_spare *rts, 644 naddr gate, 645 naddr router, 646 struct interface *ifp, 647 int metric, 648 u_short tag, 649 time_t new_time) 650 { 651 struct rt_spare new; 652 653 if (!TRACEACTIONS || ftrace == 0) 654 return; 655 656 if (rts->rts_gate == gate 657 && rts->rts_router == router 658 && rts->rts_metric == metric 659 && rts->rts_tag == tag) 660 return; 661 new.rts_ifp = ifp; 662 new.rts_gate = gate; 663 new.rts_router = router; 664 new.rts_metric = metric; 665 new.rts_time = new_time; 666 new.rts_tag = tag; 667 668 lastlog(); 669 if (rts->rts_gate != RIP_DEFAULT) { 670 (void)fprintf(ftrace, "Chg #%d %-35s ", 671 rts - rt->rt_spares, 672 trace_pair(rt->rt_dst, rt->rt_mask, 673 naddr_ntoa(rts->rts_gate))); 674 print_rts(rts, 0,0, 675 rts->rts_gate != gate, 676 rts->rts_tag != tag, 677 rts != rt->rt_spares || AGE_RT(rt->rt_state, 678 rt->rt_ifp)); 679 680 (void)fprintf(ftrace, "\n %19s%-16s ", "", 681 gate != rts->rts_gate ? naddr_ntoa(gate) : ""); 682 print_rts(&new, 683 -(metric == rts->rts_metric), 684 -(ifp == rts->rts_ifp), 685 0, 686 rts->rts_tag != tag, 687 new_time != rts->rts_time && (rts != rt->rt_spares 688 || AGE_RT(rt->rt_state, 689 ifp))); 690 691 } else { 692 (void)fprintf(ftrace, "Add #%d %-35s ", 693 rts - rt->rt_spares, 694 trace_pair(rt->rt_dst, rt->rt_mask, 695 naddr_ntoa(gate))); 696 print_rts(&new, 0,0,0,0, 697 rts != rt->rt_spares || AGE_RT(rt->rt_state,ifp)); 698 } 699 (void)fputc('\n',ftrace); 700 } 701 702 703 /* talk about a change made to the kernel table 704 */ 705 void 706 trace_kernel(char *p, ...) 707 { 708 va_list args; 709 710 if (!TRACEKERNEL || ftrace == 0) 711 return; 712 713 lastlog(); 714 va_start(args, p); 715 vfprintf(ftrace, p, args); 716 } 717 718 719 /* display a message if tracing actions 720 */ 721 void 722 trace_act(char *p, ...) 723 { 724 va_list args; 725 726 if (!TRACEACTIONS || ftrace == 0) 727 return; 728 729 lastlog(); 730 va_start(args, p); 731 vfprintf(ftrace, p, args); 732 (void)fputc('\n',ftrace); 733 } 734 735 736 /* display a message if tracing packets 737 */ 738 void 739 trace_pkt(char *p, ...) 740 { 741 va_list args; 742 743 if (!TRACEPACKETS || ftrace == 0) 744 return; 745 746 lastlog(); 747 va_start(args, p); 748 vfprintf(ftrace, p, args); 749 (void)fputc('\n',ftrace); 750 } 751 752 753 void 754 trace_change(struct rt_entry *rt, 755 u_int state, 756 naddr gate, /* forward packets here */ 757 naddr router, /* on the authority of this router */ 758 int metric, 759 u_short tag, 760 struct interface *ifp, 761 time_t new_time, 762 char *label) 763 { 764 struct rt_spare new; 765 766 if (ftrace == 0) 767 return; 768 769 if (rt->rt_metric == metric 770 && rt->rt_gate == gate 771 && rt->rt_router == router 772 && rt->rt_state == state 773 && rt->rt_tag == tag) 774 return; 775 new.rts_ifp = ifp; 776 new.rts_gate = gate; 777 new.rts_router = router; 778 new.rts_metric = metric; 779 new.rts_time = new_time; 780 new.rts_tag = tag; 781 782 lastlog(); 783 (void)fprintf(ftrace, "%s %-35s ", 784 label, 785 trace_pair(rt->rt_dst, rt->rt_mask, 786 naddr_ntoa(rt->rt_gate))); 787 print_rts(rt->rt_spares, 788 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 789 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 790 791 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 792 strlen(label), "", "", 793 rt->rt_gate != gate ? naddr_ntoa(gate) : ""); 794 print_rts(&new, 795 -(metric == rt->rt_metric), 796 -(ifp == rt->rt_ifp), 797 0, 798 rt->rt_tag != tag, 799 rt->rt_time != new_time && AGE_RT(rt->rt_state,ifp)); 800 if (rt->rt_state != state) 801 trace_bits(rs_bits, state, 1); 802 (void)fputc('\n',ftrace); 803 } 804 805 806 void 807 trace_add_del(char * action, struct rt_entry *rt) 808 { 809 if (ftrace == 0) 810 return; 811 812 lastlog(); 813 (void)fprintf(ftrace, "%s %-35s ", 814 action, 815 trace_pair(rt->rt_dst, rt->rt_mask, 816 naddr_ntoa(rt->rt_gate))); 817 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 818 trace_bits(rs_bits, rt->rt_state, 0); 819 (void)fputc('\n',ftrace); 820 } 821 822 823 /* ARGSUSED */ 824 static int 825 walk_trace(struct radix_node *rn, 826 struct walkarg *w) 827 { 828 #define RT ((struct rt_entry *)rn) 829 struct rt_spare *rts; 830 int i, age = AGE_RT(RT->rt_state, RT->rt_ifp); 831 832 (void)fprintf(ftrace, " %-35s ", trace_pair(RT->rt_dst, RT->rt_mask, 833 naddr_ntoa(RT->rt_gate))); 834 print_rts(&RT->rt_spares[0], 0,0,0,0,age); 835 trace_bits(rs_bits, RT->rt_state, 0); 836 if (RT->rt_poison_time >= now_garbage 837 && RT->rt_poison_metric < RT->rt_metric) 838 (void)fprintf(ftrace, "pm=%d@%s", 839 RT->rt_poison_metric, 840 ts(RT->rt_poison_time)); 841 842 rts = &RT->rt_spares[1]; 843 for (i = 1; i < NUM_SPARES; i++, rts++) { 844 if (rts->rts_gate != RIP_DEFAULT) { 845 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 846 i, "", naddr_ntoa(rts->rts_gate)); 847 print_rts(rts, 0,0,0,0,1); 848 } 849 } 850 (void)fputc('\n',ftrace); 851 852 return 0; 853 } 854 855 856 static void 857 trace_dump(void) 858 { 859 struct interface *ifp; 860 861 if (ftrace == 0) 862 return; 863 lastlog(); 864 865 (void)fputs("current daemon state:\n", ftrace); 866 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 867 trace_if("", ifp); 868 (void)rn_walktree(rhead, walk_trace, 0); 869 } 870 871 872 void 873 trace_rip(char *dir1, char *dir2, 874 struct sockaddr_in *who, 875 struct interface *ifp, 876 struct rip *msg, 877 int size) /* total size of message */ 878 { 879 struct netinfo *n, *lim; 880 # define NA (msg->rip_auths) 881 int i, seen_route; 882 883 if (!TRACEPACKETS || ftrace == 0) 884 return; 885 886 lastlog(); 887 if (msg->rip_cmd >= RIPCMD_MAX 888 || msg->rip_vers == 0) { 889 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 890 " %s.%d size=%d\n", 891 dir1, msg->rip_vers, msg->rip_cmd, dir2, 892 naddr_ntoa(who->sin_addr.s_addr), 893 ntohs(who->sin_port), 894 size); 895 return; 896 } 897 898 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 899 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 900 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 901 ifp ? " via " : "", ifp ? ifp->int_name : ""); 902 if (!TRACECONTENTS) 903 return; 904 905 seen_route = 0; 906 switch (msg->rip_cmd) { 907 case RIPCMD_REQUEST: 908 case RIPCMD_RESPONSE: 909 n = msg->rip_nets; 910 lim = (struct netinfo *)((char*)msg + size); 911 for (; n < lim; n++) { 912 if (!seen_route 913 && n->n_family == RIP_AF_UNSPEC 914 && ntohl(n->n_metric) == HOPCNT_INFINITY 915 && msg->rip_cmd == RIPCMD_REQUEST 916 && (n+1 == lim 917 || (n+2 == lim 918 && (n+1)->n_family == RIP_AF_AUTH))) { 919 (void)fputs("\tQUERY ", ftrace); 920 if (n->n_dst != 0) 921 (void)fprintf(ftrace, "%s ", 922 naddr_ntoa(n->n_dst)); 923 if (n->n_mask != 0) 924 (void)fprintf(ftrace, "mask=%#x ", 925 (u_int)ntohl(n->n_mask)); 926 if (n->n_nhop != 0) 927 (void)fprintf(ftrace, "nhop=%s ", 928 naddr_ntoa(n->n_nhop)); 929 if (n->n_tag != 0) 930 (void)fprintf(ftrace, "tag=%#x ", 931 ntohs(n->n_tag)); 932 (void)fputc('\n',ftrace); 933 continue; 934 } 935 936 if (n->n_family == RIP_AF_AUTH) { 937 if (NA->a_type == RIP_AUTH_PW 938 && n == msg->rip_nets) { 939 (void)fprintf(ftrace, "\tPassword" 940 " Authentication:" 941 " \"%s\"\n", 942 qstring(NA->au.au_pw, 943 RIP_AUTH_PW_LEN)); 944 continue; 945 } 946 947 if (NA->a_type == RIP_AUTH_MD5 948 && n == msg->rip_nets) { 949 (void)fprintf(ftrace, 950 "\tMD5 Authentication" 951 " len=%d KeyID=%u" 952 " seqno=%u" 953 " rsvd=%#x,%#x\n", 954 NA->au.a_md5.md5_pkt_len, 955 NA->au.a_md5.md5_keyid, 956 NA->au.a_md5.md5_seqno, 957 NA->au.a_md5.rsvd[0], 958 NA->au.a_md5.rsvd[1]); 959 continue; 960 } 961 (void)fprintf(ftrace, 962 "\tAuthentication" 963 " type %d: ", 964 ntohs(NA->a_type)); 965 for (i = 0; 966 i < sizeof(NA->au.au_pw); 967 i++) 968 (void)fprintf(ftrace, "%02x ", 969 NA->au.au_pw[i]); 970 (void)fputc('\n',ftrace); 971 continue; 972 } 973 974 seen_route = 1; 975 if (n->n_family != RIP_AF_INET) { 976 (void)fprintf(ftrace, 977 "\t(af %d) %-18s mask=%#x ", 978 ntohs(n->n_family), 979 naddr_ntoa(n->n_dst), 980 (u_int)ntohl(n->n_mask)); 981 } else if (msg->rip_vers == RIPv1) { 982 (void)fprintf(ftrace, "\t%-18s ", 983 addrname(n->n_dst, 984 ntohl(n->n_mask), 985 n->n_mask==0 ? 2 : 1)); 986 } else { 987 (void)fprintf(ftrace, "\t%-18s ", 988 addrname(n->n_dst, 989 ntohl(n->n_mask), 990 n->n_mask==0 ? 2 : 0)); 991 } 992 (void)fprintf(ftrace, "metric=%-2d ", 993 (u_int)ntohl(n->n_metric)); 994 if (n->n_nhop != 0) 995 (void)fprintf(ftrace, " nhop=%s ", 996 naddr_ntoa(n->n_nhop)); 997 if (n->n_tag != 0) 998 (void)fprintf(ftrace, "tag=%#x", 999 ntohs(n->n_tag)); 1000 (void)fputc('\n',ftrace); 1001 } 1002 if (size != (char *)n - (char *)msg) 1003 (void)fprintf(ftrace, "truncated record, len %d\n", 1004 size); 1005 break; 1006 1007 case RIPCMD_TRACEON: 1008 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1009 msg->rip_tracefile); 1010 break; 1011 1012 case RIPCMD_TRACEOFF: 1013 break; 1014 } 1015 } 1016