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 * $FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $ 34 * $DragonFly: src/sbin/routed/trace.c,v 1.3 2004/12/18 21:43:40 swildner Exp $ 35 */ 36 37 #define RIPCMDS 38 #include "defs.h" 39 #include "pathnames.h" 40 #include <sys/stat.h> 41 #include <sys/signal.h> 42 #include <fcntl.h> 43 44 #if !defined(sgi) && !defined(__NetBSD__) 45 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 46 #elif defined(__NetBSD__) 47 __RCSID("$NetBSD$"); 48 #endif 49 #ident "$FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $" 50 51 52 #ifdef sgi 53 /* use *stat64 for files on large filesystems */ 54 #define stat stat64 55 #endif 56 57 #define NRECORDS 50 /* size of circular trace buffer */ 58 59 int tracelevel, new_tracelevel; 60 FILE *ftrace; /* output trace file */ 61 static const char *sigtrace_pat = "%s"; 62 static char savetracename[MAXPATHLEN+1]; 63 char inittracename[MAXPATHLEN+1]; 64 int file_trace; /* 1=tracing to file, not stdout */ 65 66 static void trace_dump(void); 67 static void tmsg(const char *, ...) PATTRIB(1,2); 68 69 70 /* convert string to printable characters 71 */ 72 static char * 73 qstring(u_char *s, int len) 74 { 75 static char buf[8*20+1]; 76 char *p; 77 u_char *s2, c; 78 79 80 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 81 c = *s++; 82 if (c == '\0') { 83 for (s2 = s+1; s2 < &s[len]; s2++) { 84 if (*s2 != '\0') 85 break; 86 } 87 if (s2 >= &s[len]) 88 goto exit; 89 } 90 91 if (c >= ' ' && c < 0x7f && c != '\\') { 92 *p++ = c; 93 continue; 94 } 95 *p++ = '\\'; 96 switch (c) { 97 case '\\': 98 *p++ = '\\'; 99 break; 100 case '\n': 101 *p++= 'n'; 102 break; 103 case '\r': 104 *p++= 'r'; 105 break; 106 case '\t': 107 *p++ = 't'; 108 break; 109 case '\b': 110 *p++ = 'b'; 111 break; 112 default: 113 p += sprintf(p,"%o",c); 114 break; 115 } 116 } 117 exit: 118 *p = '\0'; 119 return buf; 120 } 121 122 123 /* convert IP address to a string, but not into a single buffer 124 */ 125 char * 126 naddr_ntoa(naddr a) 127 { 128 #define NUM_BUFS 4 129 static int bufno; 130 static struct { 131 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 132 } bufs[NUM_BUFS]; 133 char *s; 134 struct in_addr addr; 135 136 addr.s_addr = a; 137 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 138 bufno = (bufno+1) % NUM_BUFS; 139 return s; 140 #undef NUM_BUFS 141 } 142 143 144 const char * 145 saddr_ntoa(struct sockaddr *sa) 146 { 147 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 148 } 149 150 151 static char * 152 ts(time_t secs) { 153 static char s[20]; 154 155 secs += epoch.tv_sec; 156 #ifdef sgi 157 cftime(s, "%T", &secs); 158 #else 159 memcpy(s, ctime(&secs)+11, 8); 160 s[8] = '\0'; 161 #endif 162 return s; 163 } 164 165 166 /* On each event, display a time stamp. 167 * This assumes that 'now' is update once for each event, and 168 * that at least now.tv_usec changes. 169 */ 170 static struct timeval lastlog_time; 171 172 void 173 lastlog(void) 174 { 175 if (lastlog_time.tv_sec != now.tv_sec 176 || lastlog_time.tv_usec != now.tv_usec) { 177 fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 178 lastlog_time = now; 179 } 180 } 181 182 183 static void 184 tmsg(const char *p, ...) 185 { 186 va_list args; 187 188 if (ftrace != 0) { 189 lastlog(); 190 va_start(args, p); 191 vfprintf(ftrace, p, args); 192 fputc('\n',ftrace); 193 fflush(ftrace); 194 } 195 } 196 197 198 void 199 trace_close(int zap_stdio) 200 { 201 int fd; 202 203 204 fflush(stdout); 205 fflush(stderr); 206 207 if (ftrace != 0 && zap_stdio) { 208 if (ftrace != stdout) 209 fclose(ftrace); 210 ftrace = 0; 211 fd = open(_PATH_DEVNULL, O_RDWR); 212 if (isatty(STDIN_FILENO)) 213 dup2(fd, STDIN_FILENO); 214 if (isatty(STDOUT_FILENO)) 215 dup2(fd, STDOUT_FILENO); 216 if (isatty(STDERR_FILENO)) 217 dup2(fd, STDERR_FILENO); 218 close(fd); 219 } 220 lastlog_time.tv_sec = 0; 221 } 222 223 224 void 225 trace_flush(void) 226 { 227 if (ftrace != 0) { 228 fflush(ftrace); 229 if (ferror(ftrace)) 230 trace_off("tracing off: %s", strerror(ferror(ftrace))); 231 } 232 } 233 234 235 void 236 trace_off(const char *p, ...) 237 { 238 va_list args; 239 240 241 if (ftrace != 0) { 242 lastlog(); 243 va_start(args, p); 244 vfprintf(ftrace, p, args); 245 fputc('\n',ftrace); 246 } 247 trace_close(file_trace); 248 249 new_tracelevel = tracelevel = 0; 250 } 251 252 253 /* log a change in tracing 254 */ 255 void 256 tracelevel_msg(const char *pat, 257 int dump) /* -1=no dump, 0=default, 1=force */ 258 { 259 static const char *off_msgs[MAX_TRACELEVEL] = { 260 "Tracing actions stopped", 261 "Tracing packets stopped", 262 "Tracing packet contents stopped", 263 "Tracing kernel changes stopped", 264 }; 265 static const char *on_msgs[MAX_TRACELEVEL] = { 266 "Tracing actions started", 267 "Tracing packets started", 268 "Tracing packet contents started", 269 "Tracing kernel changes started", 270 }; 271 u_int old_tracelevel = tracelevel; 272 273 274 if (new_tracelevel < 0) 275 new_tracelevel = 0; 276 else if (new_tracelevel > MAX_TRACELEVEL) 277 new_tracelevel = MAX_TRACELEVEL; 278 279 if (new_tracelevel < tracelevel) { 280 if (new_tracelevel <= 0) { 281 trace_off(pat, off_msgs[0]); 282 } else do { 283 tmsg(pat, off_msgs[tracelevel]); 284 } 285 while (--tracelevel != new_tracelevel); 286 287 } else if (new_tracelevel > tracelevel) { 288 do { 289 tmsg(pat, on_msgs[tracelevel++]); 290 } while (tracelevel != new_tracelevel); 291 } 292 293 if (dump > 0 294 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 295 trace_dump(); 296 } 297 298 299 void 300 set_tracefile(const char *filename, 301 const char *pat, 302 int dump) /* -1=no dump, 0=default, 1=force */ 303 { 304 struct stat stbuf; 305 FILE *n_ftrace; 306 const char *fn; 307 308 309 /* Allow a null filename to increase the level if the trace file 310 * is already open or if coming from a trusted source, such as 311 * a signal or the command line. 312 */ 313 if (filename == 0 || filename[0] == '\0') { 314 filename = 0; 315 if (ftrace == 0) { 316 if (inittracename[0] == '\0') { 317 msglog("missing trace file name"); 318 return; 319 } 320 fn = inittracename; 321 } else { 322 fn = 0; 323 } 324 325 } else if (!strcmp(filename,"dump/../table")) { 326 trace_dump(); 327 return; 328 329 } else { 330 /* Allow the file specified with "-T file" to be reopened, 331 * but require all other names specified over the net to 332 * match the official path. The path can specify a directory 333 * in which the file is to be created. 334 */ 335 if (strcmp(filename, inittracename) 336 #ifdef _PATH_TRACE 337 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 338 || strstr(filename,"../") 339 || 0 > stat(_PATH_TRACE, &stbuf)) 340 #endif 341 ) { 342 msglog("wrong trace file \"%s\"", filename); 343 return; 344 } 345 346 /* If the new tracefile exists, it must be a regular file. 347 */ 348 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 349 msglog("wrong type (%#x) of trace file \"%s\"", 350 stbuf.st_mode, filename); 351 return; 352 } 353 354 fn = filename; 355 } 356 357 if (fn != 0) { 358 n_ftrace = fopen(fn, "a"); 359 if (n_ftrace == 0) { 360 msglog("failed to open trace file \"%s\" %s", 361 fn, strerror(errno)); 362 if (fn == inittracename) 363 inittracename[0] = '\0'; 364 return; 365 } 366 367 tmsg("switch to trace file %s", fn); 368 369 trace_close(file_trace = 1); 370 371 if (fn != savetracename) 372 strncpy(savetracename, fn, sizeof(savetracename)-1); 373 ftrace = n_ftrace; 374 375 fflush(stdout); 376 fflush(stderr); 377 dup2(fileno(ftrace), STDOUT_FILENO); 378 dup2(fileno(ftrace), STDERR_FILENO); 379 } 380 381 if (new_tracelevel == 0 || filename == 0) 382 new_tracelevel++; 383 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 384 } 385 386 387 /* ARGSUSED */ 388 void 389 sigtrace_on(int s UNUSED) 390 { 391 new_tracelevel++; 392 sigtrace_pat = "SIGUSR1: %s"; 393 } 394 395 396 /* ARGSUSED */ 397 void 398 sigtrace_off(int s UNUSED) 399 { 400 new_tracelevel--; 401 sigtrace_pat = "SIGUSR2: %s"; 402 } 403 404 405 /* Set tracing after a signal. 406 */ 407 void 408 set_tracelevel(void) 409 { 410 if (new_tracelevel == tracelevel) 411 return; 412 413 /* If tracing entirely off, and there was no tracefile specified 414 * on the command line, then leave it off. 415 */ 416 if (new_tracelevel > tracelevel && ftrace == 0) { 417 if (savetracename[0] != '\0') { 418 set_tracefile(savetracename,sigtrace_pat,0); 419 } else if (inittracename[0] != '\0') { 420 set_tracefile(inittracename,sigtrace_pat,0); 421 } else { 422 new_tracelevel = 0; 423 return; 424 } 425 } else { 426 tracelevel_msg(sigtrace_pat, 0); 427 } 428 } 429 430 431 /* display an address 432 */ 433 char * 434 addrname(naddr addr, /* in network byte order */ 435 naddr mask, 436 int force) /* 0=show mask if nonstandard, */ 437 { /* 1=always show mask, 2=never */ 438 #define NUM_BUFS 4 439 static int bufno; 440 static struct { 441 char str[15+20]; 442 } bufs[NUM_BUFS]; 443 char *s, *sp; 444 naddr dmask; 445 int i; 446 447 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 448 bufno = (bufno+1) % NUM_BUFS; 449 450 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 451 sp = &s[strlen(s)]; 452 453 dmask = mask & -mask; 454 if (mask + dmask == 0) { 455 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 456 continue; 457 sprintf(sp, "/%d", 32-i); 458 459 } else { 460 sprintf(sp, " (mask %#x)", (u_int)mask); 461 } 462 } 463 464 return s; 465 #undef NUM_BUFS 466 } 467 468 469 /* display a bit-field 470 */ 471 struct bits { 472 u_int bits_mask; 473 u_int bits_clear; 474 const char *bits_name; 475 }; 476 477 static struct bits if_bits[] = { 478 { IFF_LOOPBACK, 0, "LOOPBACK" }, 479 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 480 { 0, 0, 0} 481 }; 482 483 static struct bits is_bits[] = { 484 { IS_ALIAS, 0, "ALIAS" }, 485 { IS_SUBNET, 0, "" }, 486 { IS_REMOTE, (IS_NO_RDISC 487 | IS_BCAST_RDISC), "REMOTE" }, 488 { IS_PASSIVE, (IS_NO_RDISC 489 | IS_NO_RIP 490 | IS_NO_SUPER_AG 491 | IS_PM_RDISC 492 | IS_NO_AG), "PASSIVE" }, 493 { IS_EXTERNAL, 0, "EXTERNAL" }, 494 { IS_CHECKED, 0, "" }, 495 { IS_ALL_HOSTS, 0, "" }, 496 { IS_ALL_ROUTERS, 0, "" }, 497 { IS_DISTRUST, 0, "DISTRUST" }, 498 { IS_BROKE, IS_SICK, "BROKEN" }, 499 { IS_SICK, 0, "SICK" }, 500 { IS_DUP, 0, "DUPLICATE" }, 501 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 502 { IS_NEED_NET_SYN, 0, "" }, 503 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 504 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 505 { (IS_NO_RIPV1_IN 506 | IS_NO_RIPV2_IN 507 | IS_NO_RIPV1_OUT 508 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 509 { (IS_NO_RIPV1_IN 510 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 511 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 512 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 513 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 514 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 515 { (IS_NO_ADV_IN 516 | IS_NO_SOL_OUT 517 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 518 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 519 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 520 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 521 { IS_ADV_OUT, 0, "RDISC_ADV" }, 522 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 523 { IS_PM_RDISC, 0, "" }, 524 { 0, 0, "%#x"} 525 }; 526 527 static struct bits rs_bits[] = { 528 { RS_IF, 0, "IF" }, 529 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 530 { RS_NET_SYN, 0, "NET_SYN" }, 531 { RS_SUBNET, 0, "" }, 532 { RS_LOCAL, 0, "LOCAL" }, 533 { RS_MHOME, 0, "MHOME" }, 534 { RS_STATIC, 0, "STATIC" }, 535 { RS_RDISC, 0, "RDISC" }, 536 { 0, 0, "%#x"} 537 }; 538 539 540 static void 541 trace_bits(const struct bits *tbl, 542 u_int field, 543 int force) 544 { 545 u_int b; 546 char c; 547 548 if (force) { 549 putc('<', ftrace); 550 c = 0; 551 } else { 552 c = '<'; 553 } 554 555 while (field != 0 556 && (b = tbl->bits_mask) != 0) { 557 if ((b & field) == b) { 558 if (tbl->bits_name[0] != '\0') { 559 if (c) 560 putc(c, ftrace); 561 fprintf(ftrace, "%s", tbl->bits_name); 562 c = '|'; 563 } 564 if (0 == (field &= ~(b | tbl->bits_clear))) 565 break; 566 } 567 tbl++; 568 } 569 if (field != 0 && tbl->bits_name != 0) { 570 if (c) 571 putc(c, ftrace); 572 fprintf(ftrace, tbl->bits_name, field); 573 c = '|'; 574 } 575 576 if (c != '<' || force) 577 fputs("> ", ftrace); 578 } 579 580 581 char * 582 rtname(naddr dst, 583 naddr mask, 584 naddr gate) 585 { 586 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 587 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 588 int i; 589 590 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 591 sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 592 return buf; 593 } 594 595 596 static void 597 print_rts(struct rt_spare *rts, 598 int force_metric, /* -1=suppress, 0=default */ 599 int force_ifp, /* -1=suppress, 0=default */ 600 int force_router, /* -1=suppress, 0=default, 1=display */ 601 int force_tag, /* -1=suppress, 0=default, 1=display */ 602 int force_time) /* 0=suppress, 1=display */ 603 { 604 int i; 605 606 607 if (force_metric >= 0) 608 fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 609 if (force_ifp >= 0) 610 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 611 "if?" : rts->rts_ifp->int_name)); 612 if (force_router > 0 613 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 614 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router)); 615 if (force_time > 0) 616 fprintf(ftrace, "%s ", ts(rts->rts_time)); 617 if (force_tag > 0 618 || (force_tag == 0 && rts->rts_tag != 0)) 619 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 620 if (rts->rts_de_ag != 0) { 621 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 622 continue; 623 fprintf(ftrace, "de_ag=%d ", i); 624 } 625 626 } 627 628 629 void 630 trace_if(const char *act, 631 struct interface *ifp) 632 { 633 if (!TRACEACTIONS || ftrace == 0) 634 return; 635 636 lastlog(); 637 fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 638 fprintf(ftrace, "%-15s-->%-15s ", 639 naddr_ntoa(ifp->int_addr), 640 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 641 ? ifp->int_dstaddr : htonl(ifp->int_net)), 642 ifp->int_mask, 1)); 643 if (ifp->int_metric != 0) 644 fprintf(ftrace, "metric=%d ", ifp->int_metric); 645 if (!IS_RIP_OUT_OFF(ifp->int_state) 646 && ifp->int_d_metric != 0) 647 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 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 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 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 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 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 fputc('\n',ftrace); 709 } 710 711 712 /* miscellaneous message checked by the caller 713 */ 714 void 715 trace_misc(const 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 fputc('\n',ftrace); 726 } 727 728 729 /* display a message if tracing actions 730 */ 731 void 732 trace_act(const 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 fputc('\n',ftrace); 743 } 744 745 746 /* display a message if tracing packets 747 */ 748 void 749 trace_pkt(const 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 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 const 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 fprintf(ftrace, "%s %-35s ", 782 label, 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 fprintf(ftrace, "\n%*s %19s%-16s ", 788 (int)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 fputc('\n',ftrace); 801 } 802 803 804 void 805 trace_add_del(const char * action, struct rt_entry *rt) 806 { 807 if (ftrace == 0) 808 return; 809 810 lastlog(); 811 fprintf(ftrace, "%s %-35s ", 812 action, 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 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 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 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 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 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 fputs("current daemon state:\n", ftrace); 861 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 862 trace_if("", ifp); 863 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 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 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 fputs("\tQUERY ", ftrace); 915 if (n->n_dst != 0) 916 fprintf(ftrace, "%s ", 917 naddr_ntoa(n->n_dst)); 918 if (n->n_mask != 0) 919 fprintf(ftrace, "mask=%#x ", 920 (u_int)ntohl(n->n_mask)); 921 if (n->n_nhop != 0) 922 fprintf(ftrace, "nhop=%s ", 923 naddr_ntoa(n->n_nhop)); 924 if (n->n_tag != 0) 925 fprintf(ftrace, "tag=%#x ", 926 ntohs(n->n_tag)); 927 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 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 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 (int)ntohl(NA->au.a_md5.md5_seqno), 954 (int)ntohs(NA->au.a_md5.rsvd[0]), 955 (int)ntohs(NA->au.a_md5.rsvd[1])); 956 continue; 957 } 958 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 fprintf(ftrace, "%02x ", 965 NA->au.au_pw[i]); 966 fputc('\n',ftrace); 967 continue; 968 } 969 970 seen_route = 1; 971 if (n->n_family != RIP_AF_INET) { 972 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 fprintf(ftrace, "\t%-18s ", 979 addrname(n->n_dst, ntohl(n->n_mask), 980 n->n_mask==0 ? 2 : 1)); 981 } else { 982 fprintf(ftrace, "\t%-18s ", 983 addrname(n->n_dst, ntohl(n->n_mask), 984 n->n_mask==0 ? 2 : 0)); 985 } 986 fprintf(ftrace, "metric=%-2d ", 987 (u_int)ntohl(n->n_metric)); 988 if (n->n_nhop != 0) 989 fprintf(ftrace, " nhop=%s ", 990 naddr_ntoa(n->n_nhop)); 991 if (n->n_tag != 0) 992 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag)); 993 fputc('\n',ftrace); 994 } 995 if (size != (char *)n - (char *)msg) 996 fprintf(ftrace, "truncated record, len %d\n", size); 997 break; 998 999 case RIPCMD_TRACEON: 1000 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1001 msg->rip_tracefile); 1002 break; 1003 1004 case RIPCMD_TRACEOFF: 1005 break; 1006 } 1007 } 1008