trace.c revision 1.21
1 /* $NetBSD: trace.c,v 1.21 1998/06/02 18:02:56 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if !defined(lint) && !defined(sgi) && !defined(__NetBSD__) 37 static char sccsid[] = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 38 #elif defined(__NetBSD__) 39 #include <sys/cdefs.h> 40 __RCSID("$NetBSD: trace.c,v 1.21 1998/06/02 18:02:56 thorpej Exp $"); 41 #endif 42 43 #define RIPCMDS 44 #include "defs.h" 45 #include "pathnames.h" 46 #include <sys/stat.h> 47 #include <sys/signal.h> 48 #include <fcntl.h> 49 50 51 #ifdef sgi 52 /* use *stat64 for files on large filesystems */ 53 #define stat stat64 54 #endif 55 56 #define NRECORDS 50 /* size of circular trace buffer */ 57 58 int tracelevel, new_tracelevel; 59 FILE *ftrace = stdout; /* output trace file */ 60 static char *sigtrace_pat = "%s"; 61 static char savetracename[MAXPATHLEN+1]; 62 char inittracename[MAXPATHLEN+1]; 63 int file_trace; /* 1=tracing to file, not stdout */ 64 65 static void trace_dump(void); 66 67 68 /* convert string to printable characters 69 */ 70 static char * 71 qstring(u_char *s, int len) 72 { 73 static char buf[8*20+1]; 74 char *p; 75 u_char *s2, c; 76 77 78 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 79 c = *s++; 80 if (c == '\0') { 81 for (s2 = s+1; s2 < &s[len]; s2++) { 82 if (*s2 != '\0') 83 break; 84 } 85 if (s2 >= &s[len]) 86 goto exit; 87 } 88 89 if (c >= ' ' && c < 0x7f && c != '\\') { 90 *p++ = c; 91 continue; 92 } 93 *p++ = '\\'; 94 switch (c) { 95 case '\\': 96 *p++ = '\\'; 97 break; 98 case '\n': 99 *p++= 'n'; 100 break; 101 case '\r': 102 *p++= 'r'; 103 break; 104 case '\t': 105 *p++ = 't'; 106 break; 107 case '\b': 108 *p++ = 'b'; 109 break; 110 default: 111 p += sprintf(p,"%o",c); 112 break; 113 } 114 } 115 exit: 116 *p = '\0'; 117 return buf; 118 } 119 120 121 /* convert IP address to a string, but not into a single buffer 122 */ 123 char * 124 naddr_ntoa(naddr a) 125 { 126 #define NUM_BUFS 4 127 static int bufno; 128 static struct { 129 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 130 } bufs[NUM_BUFS]; 131 char *s; 132 struct in_addr addr; 133 134 addr.s_addr = a; 135 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 136 bufno = (bufno+1) % NUM_BUFS; 137 return s; 138 #undef NUM_BUFS 139 } 140 141 142 char * 143 saddr_ntoa(struct sockaddr *sa) 144 { 145 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 146 } 147 148 149 static char * 150 ts(time_t secs) { 151 static char s[20]; 152 153 secs += epoch.tv_sec; 154 #ifdef sgi 155 (void)cftime(s, "%T", &secs); 156 #else 157 memmove(s, ctime(&secs)+11, 8); 158 s[8] = '\0'; 159 #endif 160 return s; 161 } 162 163 164 /* On each event, display a time stamp. 165 * This assumes that 'now' is update once for each event, and 166 * that at least now.tv_usec changes. 167 */ 168 static struct timeval lastlog_time; 169 170 void 171 lastlog(void) 172 { 173 if (lastlog_time.tv_sec != now.tv_sec 174 || lastlog_time.tv_usec != now.tv_usec) { 175 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 176 lastlog_time = now; 177 } 178 } 179 180 181 static void 182 tmsg(char *p, ...) 183 { 184 va_list args; 185 186 if (ftrace != 0) { 187 lastlog(); 188 va_start(args, p); 189 vfprintf(ftrace, p, args); 190 (void)fputc('\n',ftrace); 191 fflush(ftrace); 192 } 193 } 194 195 196 void 197 trace_close(int zap_stdio) 198 { 199 int fd; 200 201 202 fflush(stdout); 203 fflush(stderr); 204 205 if (ftrace != 0 && zap_stdio) { 206 if (ftrace != stdout) 207 fclose(ftrace); 208 ftrace = 0; 209 fd = open(_PATH_DEVNULL, O_RDWR); 210 if (isatty(STDIN_FILENO)) 211 (void)dup2(fd, STDIN_FILENO); 212 if (isatty(STDOUT_FILENO)) 213 (void)dup2(fd, STDOUT_FILENO); 214 if (isatty(STDERR_FILENO)) 215 (void)dup2(fd, STDERR_FILENO); 216 (void)close(fd); 217 } 218 lastlog_time.tv_sec = 0; 219 } 220 221 222 void 223 trace_flush(void) 224 { 225 if (ftrace != 0) { 226 fflush(ftrace); 227 if (ferror(ftrace)) 228 trace_off("tracing off: ", strerror(ferror(ftrace))); 229 } 230 } 231 232 233 void 234 trace_off(char *p, ...) 235 { 236 va_list args; 237 238 239 if (ftrace != 0) { 240 lastlog(); 241 va_start(args, p); 242 vfprintf(ftrace, p, args); 243 (void)fputc('\n',ftrace); 244 } 245 trace_close(file_trace); 246 247 new_tracelevel = tracelevel = 0; 248 } 249 250 251 /* log a change in tracing 252 */ 253 void 254 tracelevel_msg(char *pat, 255 int dump) /* -1=no dump, 0=default, 1=force */ 256 { 257 static char *off_msgs[MAX_TRACELEVEL] = { 258 "Tracing actions stopped", 259 "Tracing packets stopped", 260 "Tracing packet contents stopped", 261 "Tracing kernel changes stopped", 262 }; 263 static char *on_msgs[MAX_TRACELEVEL] = { 264 "Tracing actions started", 265 "Tracing packets started", 266 "Tracing packet contents started", 267 "Tracing kernel changes started", 268 }; 269 u_int old_tracelevel = tracelevel; 270 271 272 if (new_tracelevel < 0) 273 new_tracelevel = 0; 274 else if (new_tracelevel > MAX_TRACELEVEL) 275 new_tracelevel = MAX_TRACELEVEL; 276 277 if (new_tracelevel < tracelevel) { 278 if (new_tracelevel <= 0) { 279 trace_off(pat, off_msgs[0]); 280 } else do { 281 tmsg(pat, off_msgs[tracelevel]); 282 } 283 while (--tracelevel != new_tracelevel); 284 285 } else if (new_tracelevel > tracelevel) { 286 do { 287 tmsg(pat, on_msgs[tracelevel++]); 288 } while (tracelevel != new_tracelevel); 289 } 290 291 if (dump > 0 292 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 293 trace_dump(); 294 } 295 296 297 void 298 set_tracefile(char *filename, 299 char *pat, 300 int dump) /* -1=no dump, 0=default, 1=force */ 301 { 302 struct stat stbuf; 303 FILE *n_ftrace; 304 char *fn; 305 306 307 /* Allow a null filename to increase the level if the trace file 308 * is already open or if coming from a trusted source, such as 309 * a signal or the command line. 310 */ 311 if (filename == 0 || filename[0] == '\0') { 312 filename = 0; 313 if (ftrace == 0) { 314 if (inittracename[0] == '\0') { 315 msglog("missing trace file name"); 316 return; 317 } 318 fn = inittracename; 319 } else { 320 fn = 0; 321 } 322 323 } else if (!strcmp(filename,"dump/../table")) { 324 trace_dump(); 325 return; 326 327 } else { 328 /* Allow the file specified with "-T file" to be reopened, 329 * but require all other names specified over the net to 330 * match the official path. The path can specify a directory 331 * in which the file is to be created. 332 */ 333 if (strcmp(filename, inittracename) 334 #ifdef _PATH_TRACE 335 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 336 || strstr(filename,"../") 337 || 0 > stat(_PATH_TRACE, &stbuf)) 338 #endif 339 ) { 340 msglog("wrong trace file \"%s\"", filename); 341 return; 342 } 343 344 /* If the new tracefile exists, it must be a regular file. 345 */ 346 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 347 msglog("wrong type (%#x) of trace file \"%s\"", 348 stbuf.st_mode, filename); 349 return; 350 } 351 352 fn = filename; 353 } 354 355 if (fn != 0) { 356 n_ftrace = fopen(fn, "a"); 357 if (n_ftrace == 0) { 358 msglog("failed to open trace file \"%s\" %s", 359 fn, strerror(errno)); 360 if (fn == inittracename) 361 inittracename[0] = '\0'; 362 return; 363 } 364 365 tmsg("switch to trace file %s", fn); 366 367 trace_close(file_trace = 1); 368 369 if (fn != savetracename) 370 strncpy(savetracename, fn, sizeof(savetracename)-1); 371 ftrace = n_ftrace; 372 373 fflush(stdout); 374 fflush(stderr); 375 dup2(fileno(ftrace), STDOUT_FILENO); 376 dup2(fileno(ftrace), STDERR_FILENO); 377 } 378 379 if (new_tracelevel == 0 || filename == 0) 380 new_tracelevel++; 381 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 382 } 383 384 385 /* ARGSUSED */ 386 void 387 sigtrace_on(int s) 388 { 389 new_tracelevel++; 390 sigtrace_pat = "SIGUSR1: %s"; 391 } 392 393 394 /* ARGSUSED */ 395 void 396 sigtrace_off(int s) 397 { 398 new_tracelevel--; 399 sigtrace_pat = "SIGUSR2: %s"; 400 } 401 402 403 /* Set tracing after a signal. 404 */ 405 void 406 set_tracelevel(void) 407 { 408 if (new_tracelevel == tracelevel) 409 return; 410 411 /* If tracing entirely off, and there was no tracefile specified 412 * on the command line, then leave it off. 413 */ 414 if (new_tracelevel > tracelevel && ftrace == 0) { 415 if (savetracename[0] != '\0') { 416 set_tracefile(savetracename,sigtrace_pat,0); 417 } else if (inittracename[0] != '\0') { 418 set_tracefile(inittracename,sigtrace_pat,0); 419 } else { 420 new_tracelevel = 0; 421 return; 422 } 423 } else { 424 tracelevel_msg(sigtrace_pat, 0); 425 } 426 } 427 428 429 /* display an address 430 */ 431 char * 432 addrname(naddr addr, /* in network byte order */ 433 naddr mask, 434 int force) /* 0=show mask if nonstandard, */ 435 { /* 1=always show mask, 2=never */ 436 #define NUM_BUFS 4 437 static int bufno; 438 static struct { 439 char str[15+20]; 440 } bufs[NUM_BUFS]; 441 char *s, *sp; 442 naddr dmask; 443 int i; 444 445 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 446 bufno = (bufno+1) % NUM_BUFS; 447 448 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 449 sp = &s[strlen(s)]; 450 451 dmask = mask & -mask; 452 if (mask + dmask == 0) { 453 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 454 continue; 455 (void)sprintf(sp, "/%d", 32-i); 456 457 } else { 458 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 459 } 460 } 461 462 return s; 463 #undef NUM_BUFS 464 } 465 466 467 /* display a bit-field 468 */ 469 struct bits { 470 int bits_mask; 471 int bits_clear; 472 char *bits_name; 473 }; 474 475 static struct bits if_bits[] = { 476 { IFF_LOOPBACK, 0, "LOOPBACK" }, 477 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 478 { 0, 0, 0} 479 }; 480 481 static struct bits is_bits[] = { 482 { IS_ALIAS, 0, "ALIAS" }, 483 { IS_SUBNET, 0, "" }, 484 { IS_REMOTE, (IS_NO_RDISC 485 | IS_BCAST_RDISC), "REMOTE" }, 486 { IS_PASSIVE, (IS_NO_RDISC 487 | IS_NO_RIP 488 | IS_NO_SUPER_AG 489 | IS_PM_RDISC 490 | IS_NO_AG), "PASSIVE" }, 491 { IS_EXTERNAL, 0, "EXTERNAL" }, 492 { IS_CHECKED, 0, "" }, 493 { IS_ALL_HOSTS, 0, "" }, 494 { IS_ALL_ROUTERS, 0, "" }, 495 { IS_DISTRUST, 0, "DISTRUST" }, 496 { IS_BROKE, IS_SICK, "BROKEN" }, 497 { IS_SICK, 0, "SICK" }, 498 { IS_DUP, 0, "DUPLICATE" }, 499 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 500 { IS_NEED_NET_SYN, 0, "" }, 501 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 502 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 503 { (IS_NO_RIPV1_IN 504 | IS_NO_RIPV2_IN 505 | IS_NO_RIPV1_OUT 506 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 507 { (IS_NO_RIPV1_IN 508 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 509 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 510 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 511 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 512 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 513 { (IS_NO_ADV_IN 514 | IS_NO_SOL_OUT 515 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 516 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 517 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 518 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 519 { IS_ADV_OUT, 0, "RDISC_ADV" }, 520 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 521 { IS_PM_RDISC, 0, "" }, 522 { 0, 0, "%#x"} 523 }; 524 525 static struct bits rs_bits[] = { 526 { RS_IF, 0, "IF" }, 527 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 528 { RS_NET_SYN, 0, "NET_SYN" }, 529 { RS_SUBNET, 0, "" }, 530 { RS_LOCAL, 0, "LOCAL" }, 531 { RS_MHOME, 0, "MHOME" }, 532 { RS_STATIC, 0, "STATIC" }, 533 { RS_RDISC, 0, "RDISC" }, 534 { 0, 0, "%#x"} 535 }; 536 537 538 static void 539 trace_bits(struct bits *tbl, 540 u_int field, 541 int force) 542 { 543 int b; 544 char c; 545 546 if (force) { 547 (void)putc('<', ftrace); 548 c = 0; 549 } else { 550 c = '<'; 551 } 552 553 while (field != 0 554 && (b = tbl->bits_mask) != 0) { 555 if ((b & field) == b) { 556 if (tbl->bits_name[0] != '\0') { 557 if (c) 558 (void)putc(c, ftrace); 559 (void)fprintf(ftrace, "%s", tbl->bits_name); 560 c = '|'; 561 } 562 if (0 == (field &= ~(b | tbl->bits_clear))) 563 break; 564 } 565 tbl++; 566 } 567 if (field != 0 && tbl->bits_name != 0) { 568 if (c) 569 (void)putc(c, ftrace); 570 (void)fprintf(ftrace, tbl->bits_name, field); 571 c = '|'; 572 } 573 574 if (c != '<' || force) 575 (void)fputs("> ", ftrace); 576 } 577 578 579 char * 580 rtname(naddr dst, 581 naddr mask, 582 naddr gate) 583 { 584 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 585 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 586 int i; 587 588 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 589 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 590 return buf; 591 } 592 593 594 static void 595 print_rts(struct rt_spare *rts, 596 int force_metric, /* -1=suppress, 0=default */ 597 int force_ifp, /* -1=suppress, 0=default */ 598 int force_router, /* -1=suppress, 0=default, 1=display */ 599 int force_tag, /* -1=suppress, 0=default, 1=display */ 600 int force_time) /* 0=suppress, 1=display */ 601 { 602 int i; 603 604 605 if (force_metric >= 0) 606 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 607 if (force_ifp >= 0) 608 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 609 "if?" : rts->rts_ifp->int_name)); 610 if (force_router > 0 611 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 612 (void)fprintf(ftrace, "router=%s ", 613 naddr_ntoa(rts->rts_router)); 614 if (force_time > 0) 615 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 616 if (force_tag > 0 617 || (force_tag == 0 && rts->rts_tag != 0)) 618 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 619 if (rts->rts_de_ag != 0) { 620 for (i = 1; (1 << i) <= rts->rts_de_ag; i++) 621 continue; 622 (void)fprintf(ftrace, "de_ag=%d ", i); 623 } 624 625 } 626 627 628 void 629 trace_if(char *act, 630 struct interface *ifp) 631 { 632 if (!TRACEACTIONS || ftrace == 0) 633 return; 634 635 lastlog(); 636 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 637 (void)fprintf(ftrace, "%-15s-->%-15s ", 638 naddr_ntoa(ifp->int_addr), 639 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 640 ? ifp->int_dstaddr 641 : htonl(ifp->int_net)), 642 ifp->int_mask, 1)); 643 if (ifp->int_metric != 0) 644 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 645 if (!IS_RIP_OUT_OFF(ifp->int_state) 646 && ifp->int_d_metric != 0) 647 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 648 trace_bits(if_bits, ifp->int_if_flags, 0); 649 trace_bits(is_bits, ifp->int_state, 0); 650 (void)fputc('\n',ftrace); 651 } 652 653 654 void 655 trace_upslot(struct rt_entry *rt, 656 struct rt_spare *rts, 657 struct rt_spare *new) 658 { 659 if (!TRACEACTIONS || ftrace == 0) 660 return; 661 662 if (rts->rts_gate == new->rts_gate 663 && rts->rts_router == new->rts_router 664 && rts->rts_metric == new->rts_metric 665 && rts->rts_tag == new->rts_tag 666 && rts->rts_de_ag == new->rts_de_ag) 667 return; 668 669 lastlog(); 670 if (new->rts_gate == 0) { 671 (void)fprintf(ftrace, "Del #%d %-35s ", 672 (int)(rts - rt->rt_spares), 673 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 674 print_rts(rts, 0,0,0,0, 675 (rts != rt->rt_spares 676 || AGE_RT(rt->rt_state,new->rts_ifp))); 677 678 } else if (rts->rts_gate != RIP_DEFAULT) { 679 (void)fprintf(ftrace, "Chg #%d %-35s ", 680 (int)(rts - rt->rt_spares), 681 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 682 print_rts(rts, 0,0, 683 rts->rts_gate != new->rts_gate, 684 rts->rts_tag != new->rts_tag, 685 rts != rt->rt_spares || AGE_RT(rt->rt_state, 686 rt->rt_ifp)); 687 688 (void)fprintf(ftrace, "\n %19s%-16s ", "", 689 (new->rts_gate != rts->rts_gate 690 ? naddr_ntoa(new->rts_gate) : "")); 691 print_rts(new, 692 -(new->rts_metric == rts->rts_metric), 693 -(new->rts_ifp == rts->rts_ifp), 694 0, 695 rts->rts_tag != new->rts_tag, 696 (new->rts_time != rts->rts_time 697 && (rts != rt->rt_spares 698 || AGE_RT(rt->rt_state, new->rts_ifp)))); 699 700 } else { 701 (void)fprintf(ftrace, "Add #%d %-35s ", 702 (int)(rts - rt->rt_spares), 703 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 704 print_rts(new, 0,0,0,0, 705 (rts != rt->rt_spares 706 || AGE_RT(rt->rt_state,new->rts_ifp))); 707 } 708 (void)fputc('\n',ftrace); 709 } 710 711 712 /* miscellaneous message checked by the caller 713 */ 714 void 715 trace_misc(char *p, ...) 716 { 717 va_list args; 718 719 if (ftrace == 0) 720 return; 721 722 lastlog(); 723 va_start(args, p); 724 vfprintf(ftrace, p, args); 725 (void)fputc('\n',ftrace); 726 } 727 728 729 /* display a message if tracing actions 730 */ 731 void 732 trace_act(char *p, ...) 733 { 734 va_list args; 735 736 if (!TRACEACTIONS || ftrace == 0) 737 return; 738 739 lastlog(); 740 va_start(args, p); 741 vfprintf(ftrace, p, args); 742 (void)fputc('\n',ftrace); 743 } 744 745 746 /* display a message if tracing packets 747 */ 748 void 749 trace_pkt(char *p, ...) 750 { 751 va_list args; 752 753 if (!TRACEPACKETS || ftrace == 0) 754 return; 755 756 lastlog(); 757 va_start(args, p); 758 vfprintf(ftrace, p, args); 759 (void)fputc('\n',ftrace); 760 } 761 762 763 void 764 trace_change(struct rt_entry *rt, 765 u_int state, 766 struct rt_spare *new, 767 char *label) 768 { 769 if (ftrace == 0) 770 return; 771 772 if (rt->rt_metric == new->rts_metric 773 && rt->rt_gate == new->rts_gate 774 && rt->rt_router == new->rts_router 775 && rt->rt_state == state 776 && rt->rt_tag == new->rts_tag 777 && rt->rt_de_ag == new->rts_de_ag) 778 return; 779 780 lastlog(); 781 (void)fprintf(ftrace, "%s %-35s ", 782 label, 783 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 784 print_rts(rt->rt_spares, 785 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 786 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 787 788 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 789 (int)strlen(label), "", "", 790 (rt->rt_gate != new->rts_gate 791 ? naddr_ntoa(new->rts_gate) : "")); 792 print_rts(new, 793 -(new->rts_metric == rt->rt_metric), 794 -(new->rts_ifp == rt->rt_ifp), 795 0, 796 rt->rt_tag != new->rts_tag, 797 (rt->rt_time != new->rts_time 798 && AGE_RT(rt->rt_state,new->rts_ifp))); 799 if (rt->rt_state != state) 800 trace_bits(rs_bits, state, 1); 801 (void)fputc('\n',ftrace); 802 } 803 804 805 void 806 trace_add_del(char * action, struct rt_entry *rt) 807 { 808 if (ftrace == 0) 809 return; 810 811 lastlog(); 812 (void)fprintf(ftrace, "%s %-35s ", 813 action, 814 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 815 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 816 trace_bits(rs_bits, rt->rt_state, 0); 817 (void)fputc('\n',ftrace); 818 } 819 820 821 /* ARGSUSED */ 822 static int 823 walk_trace(struct radix_node *rn, 824 struct walkarg *w) 825 { 826 #define RT ((struct rt_entry *)rn) 827 struct rt_spare *rts; 828 int i, age = AGE_RT(RT->rt_state, RT->rt_ifp); 829 830 (void)fprintf(ftrace, " %-35s ", 831 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 832 print_rts(&RT->rt_spares[0], 0,0,0,0,age); 833 trace_bits(rs_bits, RT->rt_state, 0); 834 if (RT->rt_poison_time >= now_garbage 835 && RT->rt_poison_metric < RT->rt_metric) 836 (void)fprintf(ftrace, "pm=%d@%s", 837 RT->rt_poison_metric, ts(RT->rt_poison_time)); 838 839 rts = &RT->rt_spares[1]; 840 for (i = 1; i < NUM_SPARES; i++, rts++) { 841 if (rts->rts_gate != RIP_DEFAULT) { 842 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 843 i, "", naddr_ntoa(rts->rts_gate)); 844 print_rts(rts, 0,0,0,0,1); 845 } 846 } 847 (void)fputc('\n',ftrace); 848 849 return 0; 850 } 851 852 853 static void 854 trace_dump(void) 855 { 856 struct interface *ifp; 857 858 if (ftrace == 0) 859 return; 860 lastlog(); 861 862 (void)fputs("current daemon state:\n", ftrace); 863 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 864 trace_if("", ifp); 865 (void)rn_walktree(rhead, walk_trace, 0); 866 } 867 868 869 void 870 trace_rip(char *dir1, char *dir2, 871 struct sockaddr_in *who, 872 struct interface *ifp, 873 struct rip *msg, 874 int size) /* total size of message */ 875 { 876 struct netinfo *n, *lim; 877 # define NA (msg->rip_auths) 878 int i, seen_route; 879 880 if (!TRACEPACKETS || ftrace == 0) 881 return; 882 883 lastlog(); 884 if (msg->rip_cmd >= RIPCMD_MAX 885 || msg->rip_vers == 0) { 886 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 887 " %s.%d size=%d\n", 888 dir1, msg->rip_vers, msg->rip_cmd, dir2, 889 naddr_ntoa(who->sin_addr.s_addr), 890 ntohs(who->sin_port), 891 size); 892 return; 893 } 894 895 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 896 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 897 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 898 ifp ? " via " : "", ifp ? ifp->int_name : ""); 899 if (!TRACECONTENTS) 900 return; 901 902 seen_route = 0; 903 switch (msg->rip_cmd) { 904 case RIPCMD_REQUEST: 905 case RIPCMD_RESPONSE: 906 n = msg->rip_nets; 907 lim = (struct netinfo *)((char*)msg + size); 908 for (; n < lim; n++) { 909 if (!seen_route 910 && n->n_family == RIP_AF_UNSPEC 911 && ntohl(n->n_metric) == HOPCNT_INFINITY 912 && msg->rip_cmd == RIPCMD_REQUEST 913 && (n+1 == lim 914 || (n+2 == lim 915 && (n+1)->n_family == RIP_AF_AUTH))) { 916 (void)fputs("\tQUERY ", ftrace); 917 if (n->n_dst != 0) 918 (void)fprintf(ftrace, "%s ", 919 naddr_ntoa(n->n_dst)); 920 if (n->n_mask != 0) 921 (void)fprintf(ftrace, "mask=%#x ", 922 (u_int)ntohl(n->n_mask)); 923 if (n->n_nhop != 0) 924 (void)fprintf(ftrace, "nhop=%s ", 925 naddr_ntoa(n->n_nhop)); 926 if (n->n_tag != 0) 927 (void)fprintf(ftrace, "tag=%#x ", 928 ntohs(n->n_tag)); 929 (void)fputc('\n',ftrace); 930 continue; 931 } 932 933 if (n->n_family == RIP_AF_AUTH) { 934 if (NA->a_type == RIP_AUTH_PW 935 && n == msg->rip_nets) { 936 (void)fprintf(ftrace, "\tPassword" 937 " Authentication:" 938 " \"%s\"\n", 939 qstring(NA->au.au_pw, 940 RIP_AUTH_PW_LEN)); 941 continue; 942 } 943 944 if (NA->a_type == RIP_AUTH_MD5 945 && n == msg->rip_nets) { 946 (void)fprintf(ftrace, 947 "\tMD5 Authentication" 948 " len=%d KeyID=%u" 949 " seqno=%u" 950 " rsvd=%#x,%#x\n", 951 NA->au.a_md5.md5_pkt_len, 952 NA->au.a_md5.md5_keyid, 953 NA->au.a_md5.md5_seqno, 954 NA->au.a_md5.rsvd[0], 955 NA->au.a_md5.rsvd[1]); 956 continue; 957 } 958 (void)fprintf(ftrace, 959 "\tAuthentication" 960 " type %d: ", 961 ntohs(NA->a_type)); 962 for (i = 0; 963 i < sizeof(NA->au.au_pw); 964 i++) 965 (void)fprintf(ftrace, "%02x ", 966 NA->au.au_pw[i]); 967 (void)fputc('\n',ftrace); 968 continue; 969 } 970 971 seen_route = 1; 972 if (n->n_family != RIP_AF_INET) { 973 (void)fprintf(ftrace, 974 "\t(af %d) %-18s mask=%#x ", 975 ntohs(n->n_family), 976 naddr_ntoa(n->n_dst), 977 (u_int)ntohl(n->n_mask)); 978 } else if (msg->rip_vers == RIPv1) { 979 (void)fprintf(ftrace, "\t%-18s ", 980 addrname(n->n_dst, 981 ntohl(n->n_mask), 982 n->n_mask==0 ? 2 : 1)); 983 } else { 984 (void)fprintf(ftrace, "\t%-18s ", 985 addrname(n->n_dst, 986 ntohl(n->n_mask), 987 n->n_mask==0 ? 2 : 0)); 988 } 989 (void)fprintf(ftrace, "metric=%-2d ", 990 (u_int)ntohl(n->n_metric)); 991 if (n->n_nhop != 0) 992 (void)fprintf(ftrace, " nhop=%s ", 993 naddr_ntoa(n->n_nhop)); 994 if (n->n_tag != 0) 995 (void)fprintf(ftrace, "tag=%#x", 996 ntohs(n->n_tag)); 997 (void)fputc('\n',ftrace); 998 } 999 if (size != (char *)n - (char *)msg) 1000 (void)fprintf(ftrace, "truncated record, len %d\n", 1001 size); 1002 break; 1003 1004 case RIPCMD_TRACEON: 1005 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1006 msg->rip_tracefile); 1007 break; 1008 1009 case RIPCMD_TRACEOFF: 1010 break; 1011 } 1012 } 1013
Indexes created Tue Sep 23 07:09:52 GMT 2025