trace.c revision 1.1.1.6
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: trace.c,v 1.1.1.6 1998/06/02 17:41:27 thorpej Exp $"; 38 #endif 39 #ident "$Revision: 1.1.1.6 $" 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"; 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 (void)fputc('\n',ftrace); 189 fflush(ftrace); 190 } 191 } 192 193 194 void 195 trace_close(int zap_stdio) 196 { 197 int fd; 198 199 200 fflush(stdout); 201 fflush(stderr); 202 203 if (ftrace != 0 && zap_stdio) { 204 if (ftrace != stdout) 205 fclose(ftrace); 206 ftrace = 0; 207 fd = open(_PATH_DEVNULL, O_RDWR); 208 if (isatty(STDIN_FILENO)) 209 (void)dup2(fd, STDIN_FILENO); 210 if (isatty(STDOUT_FILENO)) 211 (void)dup2(fd, STDOUT_FILENO); 212 if (isatty(STDERR_FILENO)) 213 (void)dup2(fd, STDERR_FILENO); 214 (void)close(fd); 215 } 216 lastlog_time.tv_sec = 0; 217 } 218 219 220 void 221 trace_flush(void) 222 { 223 if (ftrace != 0) { 224 fflush(ftrace); 225 if (ferror(ftrace)) 226 trace_off("tracing off: ", strerror(ferror(ftrace))); 227 } 228 } 229 230 231 void 232 trace_off(char *p, ...) 233 { 234 va_list args; 235 236 237 if (ftrace != 0) { 238 lastlog(); 239 va_start(args, p); 240 vfprintf(ftrace, p, args); 241 (void)fputc('\n',ftrace); 242 } 243 trace_close(file_trace); 244 245 new_tracelevel = tracelevel = 0; 246 } 247 248 249 /* log a change in tracing 250 */ 251 void 252 tracelevel_msg(char *pat, 253 int dump) /* -1=no dump, 0=default, 1=force */ 254 { 255 static char *off_msgs[MAX_TRACELEVEL] = { 256 "Tracing actions stopped", 257 "Tracing packets stopped", 258 "Tracing packet contents stopped", 259 "Tracing kernel changes stopped", 260 }; 261 static char *on_msgs[MAX_TRACELEVEL] = { 262 "Tracing actions started", 263 "Tracing packets started", 264 "Tracing packet contents started", 265 "Tracing kernel changes started", 266 }; 267 u_int old_tracelevel = tracelevel; 268 269 270 if (new_tracelevel < 0) 271 new_tracelevel = 0; 272 else if (new_tracelevel > MAX_TRACELEVEL) 273 new_tracelevel = MAX_TRACELEVEL; 274 275 if (new_tracelevel < tracelevel) { 276 if (new_tracelevel <= 0) { 277 trace_off(pat, off_msgs[0]); 278 } else do { 279 tmsg(pat, off_msgs[tracelevel]); 280 } 281 while (--tracelevel != new_tracelevel); 282 283 } else if (new_tracelevel > tracelevel) { 284 do { 285 tmsg(pat, on_msgs[tracelevel++]); 286 } while (tracelevel != new_tracelevel); 287 } 288 289 if (dump > 0 290 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 291 trace_dump(); 292 } 293 294 295 void 296 set_tracefile(char *filename, 297 char *pat, 298 int dump) /* -1=no dump, 0=default, 1=force */ 299 { 300 struct stat stbuf; 301 FILE *n_ftrace; 302 char *fn; 303 304 305 /* Allow a null filename to increase the level if the trace file 306 * is already open or if coming from a trusted source, such as 307 * a signal or the command line. 308 */ 309 if (filename == 0 || filename[0] == '\0') { 310 filename = 0; 311 if (ftrace == 0) { 312 if (inittracename[0] == '\0') { 313 msglog("missing trace file name"); 314 return; 315 } 316 fn = inittracename; 317 } else { 318 fn = 0; 319 } 320 321 } else if (!strcmp(filename,"dump/../table")) { 322 trace_dump(); 323 return; 324 325 } else { 326 /* Allow the file specified with "-T file" to be reopened, 327 * but require all other names specified over the net to 328 * match the official path. The path can specify a directory 329 * in which the file is to be created. 330 */ 331 if (strcmp(filename, inittracename) 332 #ifdef _PATH_TRACE 333 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 334 || strstr(filename,"../") 335 || 0 > stat(_PATH_TRACE, &stbuf)) 336 #endif 337 ) { 338 msglog("wrong trace file \"%s\"", filename); 339 return; 340 } 341 342 /* If the new tracefile exists, it must be a regular file. 343 */ 344 if (stat(filename, &stbuf) >= 0 345 && (stbuf.st_mode & S_IFMT) != S_IFREG) { 346 msglog("wrong type (%#x) of trace file \"%s\"", 347 stbuf.st_mode, filename); 348 return; 349 } 350 351 fn = filename; 352 } 353 354 if (fn != 0) { 355 n_ftrace = fopen(fn, "a"); 356 if (n_ftrace == 0) { 357 msglog("failed to open trace file \"%s\" %s", 358 fn, strerror(errno)); 359 if (fn == inittracename) 360 inittracename[0] = '\0'; 361 return; 362 } 363 364 tmsg("switch to trace file %s", fn); 365 366 trace_close(file_trace = 1); 367 368 if (fn != savetracename) 369 strncpy(savetracename, fn, sizeof(savetracename)-1); 370 ftrace = n_ftrace; 371 372 fflush(stdout); 373 fflush(stderr); 374 dup2(fileno(ftrace), STDOUT_FILENO); 375 dup2(fileno(ftrace), STDERR_FILENO); 376 } 377 378 if (new_tracelevel == 0 || filename == 0) 379 new_tracelevel++; 380 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 381 } 382 383 384 /* ARGSUSED */ 385 void 386 sigtrace_on(int s) 387 { 388 new_tracelevel++; 389 sigtrace_pat = "SIGUSR1: %s"; 390 } 391 392 393 /* ARGSUSED */ 394 void 395 sigtrace_off(int s) 396 { 397 new_tracelevel--; 398 sigtrace_pat = "SIGUSR2: %s"; 399 } 400 401 402 /* Set tracing after a signal. 403 */ 404 void 405 set_tracelevel(void) 406 { 407 if (new_tracelevel == tracelevel) 408 return; 409 410 /* If tracing entirely off, and there was no tracefile specified 411 * on the command line, then leave it off. 412 */ 413 if (new_tracelevel > tracelevel && ftrace == 0) { 414 if (savetracename[0] != '\0') { 415 set_tracefile(savetracename,sigtrace_pat,0); 416 } else if (inittracename[0] != '\0') { 417 set_tracefile(inittracename,sigtrace_pat,0); 418 } else { 419 new_tracelevel = 0; 420 return; 421 } 422 } else { 423 tracelevel_msg(sigtrace_pat, 0); 424 } 425 } 426 427 428 /* display an address 429 */ 430 char * 431 addrname(naddr addr, /* in network byte order */ 432 naddr mask, 433 int force) /* 0=show mask if nonstandard, */ 434 { /* 1=always show mask, 2=never */ 435 #define NUM_BUFS 4 436 static int bufno; 437 static struct { 438 char str[15+20]; 439 } bufs[NUM_BUFS]; 440 char *s, *sp; 441 naddr dmask; 442 int i; 443 444 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 445 bufno = (bufno+1) % NUM_BUFS; 446 447 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 448 sp = &s[strlen(s)]; 449 450 dmask = mask & -mask; 451 if (mask + dmask == 0) { 452 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 453 continue; 454 (void)sprintf(sp, "/%d", 32-i); 455 456 } else { 457 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 458 } 459 } 460 461 return s; 462 #undef NUM_BUFS 463 } 464 465 466 /* display a bit-field 467 */ 468 struct bits { 469 int bits_mask; 470 int bits_clear; 471 char *bits_name; 472 }; 473 474 static struct bits if_bits[] = { 475 { IFF_LOOPBACK, 0, "LOOPBACK" }, 476 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 477 { 0, 0, 0} 478 }; 479 480 static struct bits is_bits[] = { 481 { IS_ALIAS, 0, "ALIAS" }, 482 { IS_SUBNET, 0, "" }, 483 { IS_REMOTE, (IS_NO_RDISC 484 | IS_BCAST_RDISC), "REMOTE" }, 485 { IS_PASSIVE, (IS_NO_RDISC 486 | IS_NO_RIP 487 | IS_NO_SUPER_AG 488 | IS_PM_RDISC 489 | IS_NO_AG), "PASSIVE" }, 490 { IS_EXTERNAL, 0, "EXTERNAL" }, 491 { IS_CHECKED, 0, "" }, 492 { IS_ALL_HOSTS, 0, "" }, 493 { IS_ALL_ROUTERS, 0, "" }, 494 { IS_DISTRUST, 0, "DISTRUST" }, 495 { IS_BROKE, IS_SICK, "BROKEN" }, 496 { IS_SICK, 0, "SICK" }, 497 { IS_DUP, 0, "DUPLICATE" }, 498 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 499 { IS_NEED_NET_SYN, 0, "" }, 500 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 501 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 502 { (IS_NO_RIPV1_IN 503 | IS_NO_RIPV2_IN 504 | IS_NO_RIPV1_OUT 505 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 506 { (IS_NO_RIPV1_IN 507 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 508 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 509 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 510 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 511 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 512 { (IS_NO_ADV_IN 513 | IS_NO_SOL_OUT 514 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 515 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 516 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 517 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 518 { IS_ADV_OUT, 0, "RDISC_ADV" }, 519 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 520 { IS_PM_RDISC, 0, "" }, 521 { 0, 0, "%#x"} 522 }; 523 524 static struct bits rs_bits[] = { 525 { RS_IF, 0, "IF" }, 526 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 527 { RS_NET_SYN, 0, "NET_SYN" }, 528 { RS_SUBNET, 0, "" }, 529 { RS_LOCAL, 0, "LOCAL" }, 530 { RS_MHOME, 0, "MHOME" }, 531 { RS_STATIC, 0, "STATIC" }, 532 { RS_RDISC, 0, "RDISC" }, 533 { 0, 0, "%#x"} 534 }; 535 536 537 static void 538 trace_bits(struct bits *tbl, 539 u_int field, 540 int force) 541 { 542 int b; 543 char c; 544 545 if (force) { 546 (void)putc('<', ftrace); 547 c = 0; 548 } else { 549 c = '<'; 550 } 551 552 while (field != 0 553 && (b = tbl->bits_mask) != 0) { 554 if ((b & field) == b) { 555 if (tbl->bits_name[0] != '\0') { 556 if (c) 557 (void)putc(c, ftrace); 558 (void)fprintf(ftrace, "%s", tbl->bits_name); 559 c = '|'; 560 } 561 if (0 == (field &= ~(b | tbl->bits_clear))) 562 break; 563 } 564 tbl++; 565 } 566 if (field != 0 && tbl->bits_name != 0) { 567 if (c) 568 (void)putc(c, ftrace); 569 (void)fprintf(ftrace, tbl->bits_name, field); 570 c = '|'; 571 } 572 573 if (c != '<' || force) 574 (void)fputs("> ", ftrace); 575 } 576 577 578 char * 579 rtname(naddr dst, 580 naddr mask, 581 naddr gate) 582 { 583 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 584 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 585 int i; 586 587 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 588 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 589 return buf; 590 } 591 592 593 static void 594 print_rts(struct rt_spare *rts, 595 int force_metric, /* -1=suppress, 0=default */ 596 int force_ifp, /* -1=suppress, 0=default */ 597 int force_router, /* -1=suppress, 0=default, 1=display */ 598 int force_tag, /* -1=suppress, 0=default, 1=display */ 599 int force_time) /* 0=suppress, 1=display */ 600 { 601 int i; 602 603 604 if (force_metric >= 0) 605 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 606 if (force_ifp >= 0) 607 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 608 "if?" : rts->rts_ifp->int_name)); 609 if (force_router > 0 610 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 611 (void)fprintf(ftrace, "router=%s ", 612 naddr_ntoa(rts->rts_router)); 613 if (force_time > 0) 614 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 615 if (force_tag > 0 616 || (force_tag == 0 && rts->rts_tag != 0)) 617 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 618 if (rts->rts_de_ag != 0) { 619 for (i = 1; (1 << i) <= rts->rts_de_ag; i++) 620 continue; 621 (void)fprintf(ftrace, "de_ag=%d ", i); 622 } 623 624 } 625 626 627 void 628 trace_if(char *act, 629 struct interface *ifp) 630 { 631 if (!TRACEACTIONS || ftrace == 0) 632 return; 633 634 lastlog(); 635 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 636 (void)fprintf(ftrace, "%-15s-->%-15s ", 637 naddr_ntoa(ifp->int_addr), 638 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 639 ? ifp->int_dstaddr 640 : htonl(ifp->int_net)), 641 ifp->int_mask, 1)); 642 if (ifp->int_metric != 0) 643 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 644 if (!IS_RIP_OUT_OFF(ifp->int_state) 645 && ifp->int_d_metric != 0) 646 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 647 trace_bits(if_bits, ifp->int_if_flags, 0); 648 trace_bits(is_bits, ifp->int_state, 0); 649 (void)fputc('\n',ftrace); 650 } 651 652 653 void 654 trace_upslot(struct rt_entry *rt, 655 struct rt_spare *rts, 656 struct rt_spare *new) 657 { 658 if (!TRACEACTIONS || ftrace == 0) 659 return; 660 661 if (rts->rts_gate == new->rts_gate 662 && rts->rts_router == new->rts_router 663 && rts->rts_metric == new->rts_metric 664 && rts->rts_tag == new->rts_tag 665 && rts->rts_de_ag == new->rts_de_ag) 666 return; 667 668 lastlog(); 669 if (new->rts_gate == 0) { 670 (void)fprintf(ftrace, "Del #%d %-35s ", 671 rts - rt->rt_spares, 672 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 673 print_rts(rts, 0,0,0,0, 674 (rts != rt->rt_spares 675 || AGE_RT(rt->rt_state,new->rts_ifp))); 676 677 } else if (rts->rts_gate != RIP_DEFAULT) { 678 (void)fprintf(ftrace, "Chg #%d %-35s ", 679 rts - rt->rt_spares, 680 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 681 print_rts(rts, 0,0, 682 rts->rts_gate != new->rts_gate, 683 rts->rts_tag != new->rts_tag, 684 rts != rt->rt_spares || AGE_RT(rt->rt_state, 685 rt->rt_ifp)); 686 687 (void)fprintf(ftrace, "\n %19s%-16s ", "", 688 (new->rts_gate != rts->rts_gate 689 ? naddr_ntoa(new->rts_gate) : "")); 690 print_rts(new, 691 -(new->rts_metric == rts->rts_metric), 692 -(new->rts_ifp == rts->rts_ifp), 693 0, 694 rts->rts_tag != new->rts_tag, 695 (new->rts_time != rts->rts_time 696 && (rts != rt->rt_spares 697 || AGE_RT(rt->rt_state, new->rts_ifp)))); 698 699 } else { 700 (void)fprintf(ftrace, "Add #%d %-35s ", 701 rts - rt->rt_spares, 702 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 703 print_rts(new, 0,0,0,0, 704 (rts != rt->rt_spares 705 || AGE_RT(rt->rt_state,new->rts_ifp))); 706 } 707 (void)fputc('\n',ftrace); 708 } 709 710 711 /* miscellaneous message checked by the caller 712 */ 713 void 714 trace_misc(char *p, ...) 715 { 716 va_list args; 717 718 if (ftrace == 0) 719 return; 720 721 lastlog(); 722 va_start(args, p); 723 vfprintf(ftrace, p, args); 724 (void)fputc('\n',ftrace); 725 } 726 727 728 /* display a message if tracing actions 729 */ 730 void 731 trace_act(char *p, ...) 732 { 733 va_list args; 734 735 if (!TRACEACTIONS || ftrace == 0) 736 return; 737 738 lastlog(); 739 va_start(args, p); 740 vfprintf(ftrace, p, args); 741 (void)fputc('\n',ftrace); 742 } 743 744 745 /* display a message if tracing packets 746 */ 747 void 748 trace_pkt(char *p, ...) 749 { 750 va_list args; 751 752 if (!TRACEPACKETS || ftrace == 0) 753 return; 754 755 lastlog(); 756 va_start(args, p); 757 vfprintf(ftrace, p, args); 758 (void)fputc('\n',ftrace); 759 } 760 761 762 void 763 trace_change(struct rt_entry *rt, 764 u_int state, 765 struct rt_spare *new, 766 char *label) 767 { 768 if (ftrace == 0) 769 return; 770 771 if (rt->rt_metric == new->rts_metric 772 && rt->rt_gate == new->rts_gate 773 && rt->rt_router == new->rts_router 774 && rt->rt_state == state 775 && rt->rt_tag == new->rts_tag 776 && rt->rt_de_ag == new->rts_de_ag) 777 return; 778 779 lastlog(); 780 (void)fprintf(ftrace, "%s %-35s ", 781 label, 782 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 783 print_rts(rt->rt_spares, 784 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 785 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 786 787 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 788 strlen(label), "", "", 789 (rt->rt_gate != new->rts_gate 790 ? naddr_ntoa(new->rts_gate) : "")); 791 print_rts(new, 792 -(new->rts_metric == rt->rt_metric), 793 -(new->rts_ifp == rt->rt_ifp), 794 0, 795 rt->rt_tag != new->rts_tag, 796 (rt->rt_time != new->rts_time 797 && AGE_RT(rt->rt_state,new->rts_ifp))); 798 if (rt->rt_state != state) 799 trace_bits(rs_bits, state, 1); 800 (void)fputc('\n',ftrace); 801 } 802 803 804 void 805 trace_add_del(char * action, struct rt_entry *rt) 806 { 807 if (ftrace == 0) 808 return; 809 810 lastlog(); 811 (void)fprintf(ftrace, "%s %-35s ", 812 action, 813 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 814 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 815 trace_bits(rs_bits, rt->rt_state, 0); 816 (void)fputc('\n',ftrace); 817 } 818 819 820 /* ARGSUSED */ 821 static int 822 walk_trace(struct radix_node *rn, 823 struct walkarg *w) 824 { 825 #define RT ((struct rt_entry *)rn) 826 struct rt_spare *rts; 827 int i, age = AGE_RT(RT->rt_state, RT->rt_ifp); 828 829 (void)fprintf(ftrace, " %-35s ", 830 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 831 print_rts(&RT->rt_spares[0], 0,0,0,0,age); 832 trace_bits(rs_bits, RT->rt_state, 0); 833 if (RT->rt_poison_time >= now_garbage 834 && RT->rt_poison_metric < RT->rt_metric) 835 (void)fprintf(ftrace, "pm=%d@%s", 836 RT->rt_poison_metric, ts(RT->rt_poison_time)); 837 838 rts = &RT->rt_spares[1]; 839 for (i = 1; i < NUM_SPARES; i++, rts++) { 840 if (rts->rts_gate != RIP_DEFAULT) { 841 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 842 i, "", naddr_ntoa(rts->rts_gate)); 843 print_rts(rts, 0,0,0,0,1); 844 } 845 } 846 (void)fputc('\n',ftrace); 847 848 return 0; 849 } 850 851 852 static void 853 trace_dump(void) 854 { 855 struct interface *ifp; 856 857 if (ftrace == 0) 858 return; 859 lastlog(); 860 861 (void)fputs("current daemon state:\n", ftrace); 862 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 863 trace_if("", ifp); 864 (void)rn_walktree(rhead, walk_trace, 0); 865 } 866 867 868 void 869 trace_rip(char *dir1, char *dir2, 870 struct sockaddr_in *who, 871 struct interface *ifp, 872 struct rip *msg, 873 int size) /* total size of message */ 874 { 875 struct netinfo *n, *lim; 876 # define NA (msg->rip_auths) 877 int i, seen_route; 878 879 if (!TRACEPACKETS || ftrace == 0) 880 return; 881 882 lastlog(); 883 if (msg->rip_cmd >= RIPCMD_MAX 884 || msg->rip_vers == 0) { 885 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 886 " %s.%d size=%d\n", 887 dir1, msg->rip_vers, msg->rip_cmd, dir2, 888 naddr_ntoa(who->sin_addr.s_addr), 889 ntohs(who->sin_port), 890 size); 891 return; 892 } 893 894 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 895 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 896 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 897 ifp ? " via " : "", ifp ? ifp->int_name : ""); 898 if (!TRACECONTENTS) 899 return; 900 901 seen_route = 0; 902 switch (msg->rip_cmd) { 903 case RIPCMD_REQUEST: 904 case RIPCMD_RESPONSE: 905 n = msg->rip_nets; 906 lim = (struct netinfo *)((char*)msg + size); 907 for (; n < lim; n++) { 908 if (!seen_route 909 && n->n_family == RIP_AF_UNSPEC 910 && ntohl(n->n_metric) == HOPCNT_INFINITY 911 && msg->rip_cmd == RIPCMD_REQUEST 912 && (n+1 == lim 913 || (n+2 == lim 914 && (n+1)->n_family == RIP_AF_AUTH))) { 915 (void)fputs("\tQUERY ", ftrace); 916 if (n->n_dst != 0) 917 (void)fprintf(ftrace, "%s ", 918 naddr_ntoa(n->n_dst)); 919 if (n->n_mask != 0) 920 (void)fprintf(ftrace, "mask=%#x ", 921 (u_int)ntohl(n->n_mask)); 922 if (n->n_nhop != 0) 923 (void)fprintf(ftrace, "nhop=%s ", 924 naddr_ntoa(n->n_nhop)); 925 if (n->n_tag != 0) 926 (void)fprintf(ftrace, "tag=%#x ", 927 ntohs(n->n_tag)); 928 (void)fputc('\n',ftrace); 929 continue; 930 } 931 932 if (n->n_family == RIP_AF_AUTH) { 933 if (NA->a_type == RIP_AUTH_PW 934 && n == msg->rip_nets) { 935 (void)fprintf(ftrace, "\tPassword" 936 " Authentication:" 937 " \"%s\"\n", 938 qstring(NA->au.au_pw, 939 RIP_AUTH_PW_LEN)); 940 continue; 941 } 942 943 if (NA->a_type == RIP_AUTH_MD5 944 && n == msg->rip_nets) { 945 (void)fprintf(ftrace, 946 "\tMD5 Authentication" 947 " len=%d KeyID=%u" 948 " seqno=%u" 949 " rsvd=%#x,%#x\n", 950 NA->au.a_md5.md5_pkt_len, 951 NA->au.a_md5.md5_keyid, 952 NA->au.a_md5.md5_seqno, 953 NA->au.a_md5.rsvd[0], 954 NA->au.a_md5.rsvd[1]); 955 continue; 956 } 957 (void)fprintf(ftrace, 958 "\tAuthentication" 959 " type %d: ", 960 ntohs(NA->a_type)); 961 for (i = 0; 962 i < sizeof(NA->au.au_pw); 963 i++) 964 (void)fprintf(ftrace, "%02x ", 965 NA->au.au_pw[i]); 966 (void)fputc('\n',ftrace); 967 continue; 968 } 969 970 seen_route = 1; 971 if (n->n_family != RIP_AF_INET) { 972 (void)fprintf(ftrace, 973 "\t(af %d) %-18s mask=%#x ", 974 ntohs(n->n_family), 975 naddr_ntoa(n->n_dst), 976 (u_int)ntohl(n->n_mask)); 977 } else if (msg->rip_vers == RIPv1) { 978 (void)fprintf(ftrace, "\t%-18s ", 979 addrname(n->n_dst, 980 ntohl(n->n_mask), 981 n->n_mask==0 ? 2 : 1)); 982 } else { 983 (void)fprintf(ftrace, "\t%-18s ", 984 addrname(n->n_dst, 985 ntohl(n->n_mask), 986 n->n_mask==0 ? 2 : 0)); 987 } 988 (void)fprintf(ftrace, "metric=%-2d ", 989 (u_int)ntohl(n->n_metric)); 990 if (n->n_nhop != 0) 991 (void)fprintf(ftrace, " nhop=%s ", 992 naddr_ntoa(n->n_nhop)); 993 if (n->n_tag != 0) 994 (void)fprintf(ftrace, "tag=%#x", 995 ntohs(n->n_tag)); 996 (void)fputc('\n',ftrace); 997 } 998 if (size != (char *)n - (char *)msg) 999 (void)fprintf(ftrace, "truncated record, len %d\n", 1000 size); 1001 break; 1002 1003 case RIPCMD_TRACEON: 1004 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1005 msg->rip_tracefile); 1006 break; 1007 1008 case RIPCMD_TRACEOFF: 1009 break; 1010 } 1011 } 1012
Indexes created Sun Oct 19 22:09:57 GMT 2025