trace.c revision 1.1.1.7
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 acknowledgment: 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(sgi) && !defined(__NetBSD__) 35 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 36 #elif defined(__NetBSD__) 37 __RCSID("$NetBSD: trace.c,v 1.1.1.7 1999/02/23 09:56:53 christos Exp $"); 38 #endif 39 40 #define RIPCMDS 41 #include "defs.h" 42 #include "pathnames.h" 43 #include <sys/stat.h> 44 #include <sys/signal.h> 45 #include <fcntl.h> 46 47 48 #ifdef sgi 49 /* use *stat64 for files on large filesystems */ 50 #define stat stat64 51 #endif 52 53 #define NRECORDS 50 /* size of circular trace buffer */ 54 55 int tracelevel, new_tracelevel; 56 FILE *ftrace = stdout; /* output trace file */ 57 static const char *sigtrace_pat = "%s"; 58 static char savetracename[MAXPATHLEN+1]; 59 char inittracename[MAXPATHLEN+1]; 60 int file_trace; /* 1=tracing to file, not stdout */ 61 62 static void trace_dump(void); 63 static void tmsg(const char *, ...) PATTRIB(1,2); 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 const 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 memcpy(s, ctime(&secs)+11, 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(const 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: %s", strerror(ferror(ftrace))); 227 } 228 } 229 230 231 void 232 trace_off(const 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(const char *pat, 253 int dump) /* -1=no dump, 0=default, 1=force */ 254 { 255 static const 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 const 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(const char *filename, 297 const char *pat, 298 int dump) /* -1=no dump, 0=default, 1=force */ 299 { 300 struct stat stbuf; 301 FILE *n_ftrace; 302 const 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 && !S_ISREG(stbuf.st_mode)) { 345 msglog("wrong type (%#x) of trace file \"%s\"", 346 stbuf.st_mode, filename); 347 return; 348 } 349 350 fn = filename; 351 } 352 353 if (fn != 0) { 354 n_ftrace = fopen(fn, "a"); 355 if (n_ftrace == 0) { 356 msglog("failed to open trace file \"%s\" %s", 357 fn, strerror(errno)); 358 if (fn == inittracename) 359 inittracename[0] = '\0'; 360 return; 361 } 362 363 tmsg("switch to trace file %s", fn); 364 365 trace_close(file_trace = 1); 366 367 if (fn != savetracename) 368 strncpy(savetracename, fn, sizeof(savetracename)-1); 369 ftrace = n_ftrace; 370 371 fflush(stdout); 372 fflush(stderr); 373 dup2(fileno(ftrace), STDOUT_FILENO); 374 dup2(fileno(ftrace), STDERR_FILENO); 375 } 376 377 if (new_tracelevel == 0 || filename == 0) 378 new_tracelevel++; 379 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 380 } 381 382 383 /* ARGSUSED */ 384 void 385 sigtrace_on(int s UNUSED) 386 { 387 new_tracelevel++; 388 sigtrace_pat = "SIGUSR1: %s"; 389 } 390 391 392 /* ARGSUSED */ 393 void 394 sigtrace_off(int s UNUSED) 395 { 396 new_tracelevel--; 397 sigtrace_pat = "SIGUSR2: %s"; 398 } 399 400 401 /* Set tracing after a signal. 402 */ 403 void 404 set_tracelevel(void) 405 { 406 if (new_tracelevel == tracelevel) 407 return; 408 409 /* If tracing entirely off, and there was no tracefile specified 410 * on the command line, then leave it off. 411 */ 412 if (new_tracelevel > tracelevel && ftrace == 0) { 413 if (savetracename[0] != '\0') { 414 set_tracefile(savetracename,sigtrace_pat,0); 415 } else if (inittracename[0] != '\0') { 416 set_tracefile(inittracename,sigtrace_pat,0); 417 } else { 418 new_tracelevel = 0; 419 return; 420 } 421 } else { 422 tracelevel_msg(sigtrace_pat, 0); 423 } 424 } 425 426 427 /* display an address 428 */ 429 char * 430 addrname(naddr addr, /* in network byte order */ 431 naddr mask, 432 int force) /* 0=show mask if nonstandard, */ 433 { /* 1=always show mask, 2=never */ 434 #define NUM_BUFS 4 435 static int bufno; 436 static struct { 437 char str[15+20]; 438 } bufs[NUM_BUFS]; 439 char *s, *sp; 440 naddr dmask; 441 int i; 442 443 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 444 bufno = (bufno+1) % NUM_BUFS; 445 446 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 447 sp = &s[strlen(s)]; 448 449 dmask = mask & -mask; 450 if (mask + dmask == 0) { 451 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 452 continue; 453 (void)sprintf(sp, "/%d", 32-i); 454 455 } else { 456 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 457 } 458 } 459 460 return s; 461 #undef NUM_BUFS 462 } 463 464 465 /* display a bit-field 466 */ 467 struct bits { 468 u_int bits_mask; 469 u_int bits_clear; 470 const char *bits_name; 471 }; 472 473 static struct bits if_bits[] = { 474 { IFF_LOOPBACK, 0, "LOOPBACK" }, 475 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 476 { 0, 0, 0} 477 }; 478 479 static struct bits is_bits[] = { 480 { IS_ALIAS, 0, "ALIAS" }, 481 { IS_SUBNET, 0, "" }, 482 { IS_REMOTE, (IS_NO_RDISC 483 | IS_BCAST_RDISC), "REMOTE" }, 484 { IS_PASSIVE, (IS_NO_RDISC 485 | IS_NO_RIP 486 | IS_NO_SUPER_AG 487 | IS_PM_RDISC 488 | IS_NO_AG), "PASSIVE" }, 489 { IS_EXTERNAL, 0, "EXTERNAL" }, 490 { IS_CHECKED, 0, "" }, 491 { IS_ALL_HOSTS, 0, "" }, 492 { IS_ALL_ROUTERS, 0, "" }, 493 { IS_DISTRUST, 0, "DISTRUST" }, 494 { IS_BROKE, IS_SICK, "BROKEN" }, 495 { IS_SICK, 0, "SICK" }, 496 { IS_DUP, 0, "DUPLICATE" }, 497 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 498 { IS_NEED_NET_SYN, 0, "" }, 499 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 500 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 501 { (IS_NO_RIPV1_IN 502 | IS_NO_RIPV2_IN 503 | IS_NO_RIPV1_OUT 504 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 505 { (IS_NO_RIPV1_IN 506 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 507 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 508 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 509 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 510 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 511 { (IS_NO_ADV_IN 512 | IS_NO_SOL_OUT 513 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 514 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 515 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 516 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 517 { IS_ADV_OUT, 0, "RDISC_ADV" }, 518 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 519 { IS_PM_RDISC, 0, "" }, 520 { 0, 0, "%#x"} 521 }; 522 523 static struct bits rs_bits[] = { 524 { RS_IF, 0, "IF" }, 525 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 526 { RS_NET_SYN, 0, "NET_SYN" }, 527 { RS_SUBNET, 0, "" }, 528 { RS_LOCAL, 0, "LOCAL" }, 529 { RS_MHOME, 0, "MHOME" }, 530 { RS_STATIC, 0, "STATIC" }, 531 { RS_RDISC, 0, "RDISC" }, 532 { 0, 0, "%#x"} 533 }; 534 535 536 static void 537 trace_bits(const struct bits *tbl, 538 u_int field, 539 int force) 540 { 541 u_int b; 542 char c; 543 544 if (force) { 545 (void)putc('<', ftrace); 546 c = 0; 547 } else { 548 c = '<'; 549 } 550 551 while (field != 0 552 && (b = tbl->bits_mask) != 0) { 553 if ((b & field) == b) { 554 if (tbl->bits_name[0] != '\0') { 555 if (c) 556 (void)putc(c, ftrace); 557 (void)fprintf(ftrace, "%s", tbl->bits_name); 558 c = '|'; 559 } 560 if (0 == (field &= ~(b | tbl->bits_clear))) 561 break; 562 } 563 tbl++; 564 } 565 if (field != 0 && tbl->bits_name != 0) { 566 if (c) 567 (void)putc(c, ftrace); 568 (void)fprintf(ftrace, tbl->bits_name, field); 569 c = '|'; 570 } 571 572 if (c != '<' || force) 573 (void)fputs("> ", ftrace); 574 } 575 576 577 char * 578 rtname(naddr dst, 579 naddr mask, 580 naddr gate) 581 { 582 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 583 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 584 int i; 585 586 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 587 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 588 return buf; 589 } 590 591 592 static void 593 print_rts(struct rt_spare *rts, 594 int force_metric, /* -1=suppress, 0=default */ 595 int force_ifp, /* -1=suppress, 0=default */ 596 int force_router, /* -1=suppress, 0=default, 1=display */ 597 int force_tag, /* -1=suppress, 0=default, 1=display */ 598 int force_time) /* 0=suppress, 1=display */ 599 { 600 int i; 601 602 603 if (force_metric >= 0) 604 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 605 if (force_ifp >= 0) 606 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 607 "if?" : rts->rts_ifp->int_name)); 608 if (force_router > 0 609 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 610 (void)fprintf(ftrace, "router=%s ", 611 naddr_ntoa(rts->rts_router)); 612 if (force_time > 0) 613 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 614 if (force_tag > 0 615 || (force_tag == 0 && rts->rts_tag != 0)) 616 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 617 if (rts->rts_de_ag != 0) { 618 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 619 continue; 620 (void)fprintf(ftrace, "de_ag=%d ", i); 621 } 622 623 } 624 625 626 void 627 trace_if(const char *act, 628 struct interface *ifp) 629 { 630 if (!TRACEACTIONS || ftrace == 0) 631 return; 632 633 lastlog(); 634 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 635 (void)fprintf(ftrace, "%-15s-->%-15s ", 636 naddr_ntoa(ifp->int_addr), 637 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 638 ? ifp->int_dstaddr 639 : htonl(ifp->int_net)), 640 ifp->int_mask, 1)); 641 if (ifp->int_metric != 0) 642 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 643 if (!IS_RIP_OUT_OFF(ifp->int_state) 644 && ifp->int_d_metric != 0) 645 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 646 trace_bits(if_bits, ifp->int_if_flags, 0); 647 trace_bits(is_bits, ifp->int_state, 0); 648 (void)fputc('\n',ftrace); 649 } 650 651 652 void 653 trace_upslot(struct rt_entry *rt, 654 struct rt_spare *rts, 655 struct rt_spare *new) 656 { 657 if (!TRACEACTIONS || ftrace == 0) 658 return; 659 660 if (rts->rts_gate == new->rts_gate 661 && rts->rts_router == new->rts_router 662 && rts->rts_metric == new->rts_metric 663 && rts->rts_tag == new->rts_tag 664 && rts->rts_de_ag == new->rts_de_ag) 665 return; 666 667 lastlog(); 668 if (new->rts_gate == 0) { 669 (void)fprintf(ftrace, "Del #%d %-35s ", 670 (int)(rts - rt->rt_spares), 671 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 672 print_rts(rts, 0,0,0,0, 673 (rts != rt->rt_spares 674 || AGE_RT(rt->rt_state,new->rts_ifp))); 675 676 } else if (rts->rts_gate != RIP_DEFAULT) { 677 (void)fprintf(ftrace, "Chg #%d %-35s ", 678 (int)(rts - rt->rt_spares), 679 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 680 print_rts(rts, 0,0, 681 rts->rts_gate != new->rts_gate, 682 rts->rts_tag != new->rts_tag, 683 rts != rt->rt_spares || AGE_RT(rt->rt_state, 684 rt->rt_ifp)); 685 686 (void)fprintf(ftrace, "\n %19s%-16s ", "", 687 (new->rts_gate != rts->rts_gate 688 ? naddr_ntoa(new->rts_gate) : "")); 689 print_rts(new, 690 -(new->rts_metric == rts->rts_metric), 691 -(new->rts_ifp == rts->rts_ifp), 692 0, 693 rts->rts_tag != new->rts_tag, 694 (new->rts_time != rts->rts_time 695 && (rts != rt->rt_spares 696 || AGE_RT(rt->rt_state, new->rts_ifp)))); 697 698 } else { 699 (void)fprintf(ftrace, "Add #%d %-35s ", 700 (int)(rts - rt->rt_spares), 701 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 702 print_rts(new, 0,0,0,0, 703 (rts != rt->rt_spares 704 || AGE_RT(rt->rt_state,new->rts_ifp))); 705 } 706 (void)fputc('\n',ftrace); 707 } 708 709 710 /* miscellaneous message checked by the caller 711 */ 712 void 713 trace_misc(const char *p, ...) 714 { 715 va_list args; 716 717 if (ftrace == 0) 718 return; 719 720 lastlog(); 721 va_start(args, p); 722 vfprintf(ftrace, p, args); 723 (void)fputc('\n',ftrace); 724 } 725 726 727 /* display a message if tracing actions 728 */ 729 void 730 trace_act(const char *p, ...) 731 { 732 va_list args; 733 734 if (!TRACEACTIONS || ftrace == 0) 735 return; 736 737 lastlog(); 738 va_start(args, p); 739 vfprintf(ftrace, p, args); 740 (void)fputc('\n',ftrace); 741 } 742 743 744 /* display a message if tracing packets 745 */ 746 void 747 trace_pkt(const char *p, ...) 748 { 749 va_list args; 750 751 if (!TRACEPACKETS || ftrace == 0) 752 return; 753 754 lastlog(); 755 va_start(args, p); 756 vfprintf(ftrace, p, args); 757 (void)fputc('\n',ftrace); 758 } 759 760 761 void 762 trace_change(struct rt_entry *rt, 763 u_int state, 764 struct rt_spare *new, 765 const char *label) 766 { 767 if (ftrace == 0) 768 return; 769 770 if (rt->rt_metric == new->rts_metric 771 && rt->rt_gate == new->rts_gate 772 && rt->rt_router == new->rts_router 773 && rt->rt_state == state 774 && rt->rt_tag == new->rts_tag 775 && rt->rt_de_ag == new->rts_de_ag) 776 return; 777 778 lastlog(); 779 (void)fprintf(ftrace, "%s %-35s ", 780 label, 781 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 782 print_rts(rt->rt_spares, 783 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 784 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 785 786 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 787 (int)strlen(label), "", "", 788 (rt->rt_gate != new->rts_gate 789 ? naddr_ntoa(new->rts_gate) : "")); 790 print_rts(new, 791 -(new->rts_metric == rt->rt_metric), 792 -(new->rts_ifp == rt->rt_ifp), 793 0, 794 rt->rt_tag != new->rts_tag, 795 (rt->rt_time != new->rts_time 796 && AGE_RT(rt->rt_state,new->rts_ifp))); 797 if (rt->rt_state != state) 798 trace_bits(rs_bits, state, 1); 799 (void)fputc('\n',ftrace); 800 } 801 802 803 void 804 trace_add_del(const char * action, struct rt_entry *rt) 805 { 806 if (ftrace == 0) 807 return; 808 809 lastlog(); 810 (void)fprintf(ftrace, "%s %-35s ", 811 action, 812 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 813 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 814 trace_bits(rs_bits, rt->rt_state, 0); 815 (void)fputc('\n',ftrace); 816 } 817 818 819 /* ARGSUSED */ 820 static int 821 walk_trace(struct radix_node *rn, 822 struct walkarg *w UNUSED) 823 { 824 #define RT ((struct rt_entry *)rn) 825 struct rt_spare *rts; 826 int i; 827 828 (void)fprintf(ftrace, " %-35s ", 829 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 830 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 831 trace_bits(rs_bits, RT->rt_state, 0); 832 if (RT->rt_poison_time >= now_garbage 833 && RT->rt_poison_metric < RT->rt_metric) 834 (void)fprintf(ftrace, "pm=%d@%s", 835 RT->rt_poison_metric, ts(RT->rt_poison_time)); 836 837 rts = &RT->rt_spares[1]; 838 for (i = 1; i < NUM_SPARES; i++, rts++) { 839 if (rts->rts_gate != RIP_DEFAULT) { 840 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 841 i, "", naddr_ntoa(rts->rts_gate)); 842 print_rts(rts, 0,0,0,0,1); 843 } 844 } 845 (void)fputc('\n',ftrace); 846 847 return 0; 848 } 849 850 851 static void 852 trace_dump(void) 853 { 854 struct interface *ifp; 855 856 if (ftrace == 0) 857 return; 858 lastlog(); 859 860 (void)fputs("current daemon state:\n", ftrace); 861 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 862 trace_if("", ifp); 863 (void)rn_walktree(rhead, walk_trace, 0); 864 } 865 866 867 void 868 trace_rip(const char *dir1, const char *dir2, 869 struct sockaddr_in *who, 870 struct interface *ifp, 871 struct rip *msg, 872 int size) /* total size of message */ 873 { 874 struct netinfo *n, *lim; 875 # define NA ((struct netauth*)n) 876 int i, seen_route; 877 878 if (!TRACEPACKETS || ftrace == 0) 879 return; 880 881 lastlog(); 882 if (msg->rip_cmd >= RIPCMD_MAX 883 || msg->rip_vers == 0) { 884 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 885 " %s.%d size=%d\n", 886 dir1, msg->rip_vers, msg->rip_cmd, dir2, 887 naddr_ntoa(who->sin_addr.s_addr), 888 ntohs(who->sin_port), 889 size); 890 return; 891 } 892 893 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 894 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 895 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 896 ifp ? " via " : "", ifp ? ifp->int_name : ""); 897 if (!TRACECONTENTS) 898 return; 899 900 seen_route = 0; 901 switch (msg->rip_cmd) { 902 case RIPCMD_REQUEST: 903 case RIPCMD_RESPONSE: 904 n = msg->rip_nets; 905 lim = (struct netinfo *)((char*)msg + size); 906 for (; n < lim; n++) { 907 if (!seen_route 908 && n->n_family == RIP_AF_UNSPEC 909 && ntohl(n->n_metric) == HOPCNT_INFINITY 910 && msg->rip_cmd == RIPCMD_REQUEST 911 && (n+1 == lim 912 || (n+2 == lim 913 && (n+1)->n_family == RIP_AF_AUTH))) { 914 (void)fputs("\tQUERY ", ftrace); 915 if (n->n_dst != 0) 916 (void)fprintf(ftrace, "%s ", 917 naddr_ntoa(n->n_dst)); 918 if (n->n_mask != 0) 919 (void)fprintf(ftrace, "mask=%#x ", 920 (u_int)ntohl(n->n_mask)); 921 if (n->n_nhop != 0) 922 (void)fprintf(ftrace, "nhop=%s ", 923 naddr_ntoa(n->n_nhop)); 924 if (n->n_tag != 0) 925 (void)fprintf(ftrace, "tag=%#x ", 926 ntohs(n->n_tag)); 927 (void)fputc('\n',ftrace); 928 continue; 929 } 930 931 if (n->n_family == RIP_AF_AUTH) { 932 if (NA->a_type == RIP_AUTH_PW 933 && n == msg->rip_nets) { 934 (void)fprintf(ftrace, "\tPassword" 935 " Authentication:" 936 " \"%s\"\n", 937 qstring(NA->au.au_pw, 938 RIP_AUTH_PW_LEN)); 939 continue; 940 } 941 942 if (NA->a_type == RIP_AUTH_MD5 943 && n == msg->rip_nets) { 944 (void)fprintf(ftrace, 945 "\tMD5 Auth" 946 " pkt_len=%d KeyID=%u" 947 " auth_len=%d" 948 " seqno=%#x" 949 " rsvd=%#x,%#x\n", 950 ntohs(NA->au.a_md5.md5_pkt_len), 951 NA->au.a_md5.md5_keyid, 952 NA->au.a_md5.md5_auth_len, 953 ntohl(NA->au.a_md5.md5_seqno), 954 ntohs(NA->au.a_md5.rsvd[0]), 955 ntohs(NA->au.a_md5.rsvd[1])); 956 continue; 957 } 958 (void)fprintf(ftrace, 959 "\tAuthentication type %d: ", 960 ntohs(NA->a_type)); 961 for (i = 0; 962 i < (int)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