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