1 /* $NetBSD: trace.c,v 1.27 2002/11/30 04:04:24 christos 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 acknowledgment: 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 #define RIPCMDS 37 #include "defs.h" 38 #include "pathnames.h" 39 #include <sys/stat.h> 40 #include <sys/signal.h> 41 #include <fcntl.h> 42 43 #ifdef __NetBSD__ 44 __RCSID("$NetBSD: trace.c,v 1.27 2002/11/30 04:04:24 christos Exp $"); 45 #elif defined(__FreeBSD__) 46 __RCSID("$FreeBSD$"); 47 #else 48 __RCSID("Revision: 2.27 "); 49 #ident "Revision: 2.27 " 50 #endif 51 52 53 #ifdef sgi 54 /* use *stat64 for files on large filesystems */ 55 #define stat stat64 56 #endif 57 58 #define NRECORDS 50 /* size of circular trace buffer */ 59 60 int tracelevel, new_tracelevel; 61 FILE *ftrace = stdout; /* output trace file */ 62 static const char *sigtrace_pat = "%s"; 63 static char savetracename[MAXPATHLEN+1]; 64 char inittracename[MAXPATHLEN+1]; 65 int file_trace; /* 1=tracing to file, not stdout */ 66 67 static void trace_dump(void); 68 static void tmsg(const char *, ...) PATTRIB(1,2); 69 70 71 /* convert string to printable characters 72 */ 73 static char * 74 qstring(u_char *s, int len) 75 { 76 static char buf[8*20+1]; 77 char *p; 78 u_char *s2, c; 79 80 81 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 82 c = *s++; 83 if (c == '\0') { 84 for (s2 = s+1; s2 < &s[len]; s2++) { 85 if (*s2 != '\0') 86 break; 87 } 88 if (s2 >= &s[len]) 89 goto exit; 90 } 91 92 if (c >= ' ' && c < 0x7f && c != '\\') { 93 *p++ = c; 94 continue; 95 } 96 *p++ = '\\'; 97 switch (c) { 98 case '\\': 99 *p++ = '\\'; 100 break; 101 case '\n': 102 *p++= 'n'; 103 break; 104 case '\r': 105 *p++= 'r'; 106 break; 107 case '\t': 108 *p++ = 't'; 109 break; 110 case '\b': 111 *p++ = 'b'; 112 break; 113 default: 114 p += sprintf(p,"%o",c); 115 break; 116 } 117 } 118 exit: 119 *p = '\0'; 120 return buf; 121 } 122 123 124 /* convert IP address to a string, but not into a single buffer 125 */ 126 char * 127 naddr_ntoa(naddr a) 128 { 129 #define NUM_BUFS 4 130 static int bufno; 131 static struct { 132 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 133 } bufs[NUM_BUFS]; 134 char *s; 135 struct in_addr addr; 136 137 addr.s_addr = a; 138 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 139 bufno = (bufno+1) % NUM_BUFS; 140 return s; 141 #undef NUM_BUFS 142 } 143 144 145 const char * 146 saddr_ntoa(struct sockaddr *sa) 147 { 148 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 149 } 150 151 152 static char * 153 ts(time_t secs) { 154 static char s[20]; 155 156 secs += epoch.tv_sec; 157 #ifdef sgi 158 (void)cftime(s, "%T", &secs); 159 #else 160 memcpy(s, ctime(&secs)+11, 8); 161 s[8] = '\0'; 162 #endif 163 return s; 164 } 165 166 167 /* On each event, display a time stamp. 168 * This assumes that 'now' is update once for each event, and 169 * that at least now.tv_usec changes. 170 */ 171 static struct timeval lastlog_time; 172 173 void 174 lastlog(void) 175 { 176 if (lastlog_time.tv_sec != now.tv_sec 177 || lastlog_time.tv_usec != now.tv_usec) { 178 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 179 lastlog_time = now; 180 } 181 } 182 183 184 static void 185 tmsg(const char *p, ...) 186 { 187 va_list args; 188 189 if (ftrace != 0) { 190 lastlog(); 191 va_start(args, p); 192 vfprintf(ftrace, p, args); 193 va_end(args); 194 (void)fputc('\n',ftrace); 195 fflush(ftrace); 196 } 197 } 198 199 200 void 201 trace_close(int zap_stdio) 202 { 203 int fd; 204 205 206 fflush(stdout); 207 fflush(stderr); 208 209 if (ftrace != 0 && zap_stdio) { 210 if (ftrace != stdout) 211 fclose(ftrace); 212 ftrace = 0; 213 fd = open(_PATH_DEVNULL, O_RDWR); 214 if (isatty(STDIN_FILENO)) 215 (void)dup2(fd, STDIN_FILENO); 216 if (isatty(STDOUT_FILENO)) 217 (void)dup2(fd, STDOUT_FILENO); 218 if (isatty(STDERR_FILENO)) 219 (void)dup2(fd, STDERR_FILENO); 220 (void)close(fd); 221 } 222 lastlog_time.tv_sec = 0; 223 } 224 225 226 void 227 trace_flush(void) 228 { 229 if (ftrace != 0) { 230 fflush(ftrace); 231 if (ferror(ftrace)) 232 trace_off("tracing off: %s", strerror(ferror(ftrace))); 233 } 234 } 235 236 237 void 238 trace_off(const char *p, ...) 239 { 240 va_list args; 241 242 243 if (ftrace != 0) { 244 lastlog(); 245 va_start(args, p); 246 vfprintf(ftrace, p, args); 247 va_end(args); 248 (void)fputc('\n',ftrace); 249 } 250 trace_close(file_trace); 251 252 new_tracelevel = tracelevel = 0; 253 } 254 255 256 /* log a change in tracing 257 */ 258 void 259 tracelevel_msg(const char *pat, 260 int dump) /* -1=no dump, 0=default, 1=force */ 261 { 262 static const char *off_msgs[MAX_TRACELEVEL] = { 263 "Tracing actions stopped", 264 "Tracing packets stopped", 265 "Tracing packet contents stopped", 266 "Tracing kernel changes stopped", 267 }; 268 static const char *on_msgs[MAX_TRACELEVEL] = { 269 "Tracing actions started", 270 "Tracing packets started", 271 "Tracing packet contents started", 272 "Tracing kernel changes started", 273 }; 274 u_int old_tracelevel = tracelevel; 275 276 277 if (new_tracelevel < 0) 278 new_tracelevel = 0; 279 else if (new_tracelevel > MAX_TRACELEVEL) 280 new_tracelevel = MAX_TRACELEVEL; 281 282 if (new_tracelevel < tracelevel) { 283 if (new_tracelevel <= 0) { 284 trace_off(pat, off_msgs[0]); 285 } else do { 286 tmsg(pat, off_msgs[tracelevel]); 287 } 288 while (--tracelevel != new_tracelevel); 289 290 } else if (new_tracelevel > tracelevel) { 291 do { 292 tmsg(pat, on_msgs[tracelevel++]); 293 } while (tracelevel != new_tracelevel); 294 } 295 296 if (dump > 0 297 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 298 trace_dump(); 299 } 300 301 302 void 303 set_tracefile(const char *filename, 304 const char *pat, 305 int dump) /* -1=no dump, 0=default, 1=force */ 306 { 307 struct stat stbuf; 308 FILE *n_ftrace; 309 const char *fn; 310 311 312 /* Allow a null filename to increase the level if the trace file 313 * is already open or if coming from a trusted source, such as 314 * a signal or the command line. 315 */ 316 if (filename == 0 || filename[0] == '\0') { 317 filename = 0; 318 if (ftrace == 0) { 319 if (inittracename[0] == '\0') { 320 msglog("missing trace file name"); 321 return; 322 } 323 fn = inittracename; 324 } else { 325 fn = 0; 326 } 327 328 } else if (!strcmp(filename,"dump/../table")) { 329 trace_dump(); 330 return; 331 332 } else { 333 /* Allow the file specified with "-T file" to be reopened, 334 * but require all other names specified over the net to 335 * match the official path. The path can specify a directory 336 * in which the file is to be created. 337 */ 338 if (strcmp(filename, inittracename) 339 #ifdef _PATH_TRACE 340 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 341 || strstr(filename,"../") 342 || 0 > stat(_PATH_TRACE, &stbuf)) 343 #endif 344 ) { 345 msglog("wrong trace file \"%s\"", filename); 346 return; 347 } 348 349 /* If the new tracefile exists, it must be a regular file. 350 */ 351 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 352 msglog("wrong type (%#x) of trace file \"%s\"", 353 stbuf.st_mode, filename); 354 return; 355 } 356 357 fn = filename; 358 } 359 360 if (fn != 0) { 361 n_ftrace = fopen(fn, "a"); 362 if (n_ftrace == 0) { 363 msglog("failed to open trace file \"%s\" %s", 364 fn, strerror(errno)); 365 if (fn == inittracename) 366 inittracename[0] = '\0'; 367 return; 368 } 369 370 tmsg("switch to trace file %s", fn); 371 372 trace_close(file_trace = 1); 373 374 if (fn != savetracename) 375 strncpy(savetracename, fn, sizeof(savetracename)-1); 376 ftrace = n_ftrace; 377 378 fflush(stdout); 379 fflush(stderr); 380 dup2(fileno(ftrace), STDOUT_FILENO); 381 dup2(fileno(ftrace), STDERR_FILENO); 382 } 383 384 if (new_tracelevel == 0 || filename == 0) 385 new_tracelevel++; 386 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 387 } 388 389 390 /* ARGSUSED */ 391 void 392 sigtrace_on(int s UNUSED) 393 { 394 new_tracelevel++; 395 sigtrace_pat = "SIGUSR1: %s"; 396 } 397 398 399 /* ARGSUSED */ 400 void 401 sigtrace_off(int s UNUSED) 402 { 403 new_tracelevel--; 404 sigtrace_pat = "SIGUSR2: %s"; 405 } 406 407 408 /* Set tracing after a signal. 409 */ 410 void 411 set_tracelevel(void) 412 { 413 if (new_tracelevel == tracelevel) 414 return; 415 416 /* If tracing entirely off, and there was no tracefile specified 417 * on the command line, then leave it off. 418 */ 419 if (new_tracelevel > tracelevel && ftrace == 0) { 420 if (savetracename[0] != '\0') { 421 set_tracefile(savetracename,sigtrace_pat,0); 422 } else if (inittracename[0] != '\0') { 423 set_tracefile(inittracename,sigtrace_pat,0); 424 } else { 425 new_tracelevel = 0; 426 return; 427 } 428 } else { 429 tracelevel_msg(sigtrace_pat, 0); 430 } 431 } 432 433 434 /* display an address 435 */ 436 char * 437 addrname(naddr addr, /* in network byte order */ 438 naddr mask, 439 int force) /* 0=show mask if nonstandard, */ 440 { /* 1=always show mask, 2=never */ 441 #define NUM_BUFS 4 442 static int bufno; 443 static struct { 444 char str[15+20]; 445 } bufs[NUM_BUFS]; 446 char *s, *sp; 447 naddr dmask; 448 int i; 449 450 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 451 bufno = (bufno+1) % NUM_BUFS; 452 453 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 454 sp = &s[strlen(s)]; 455 456 dmask = mask & -mask; 457 if (mask + dmask == 0) { 458 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 459 continue; 460 (void)sprintf(sp, "/%d", 32-i); 461 462 } else { 463 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 464 } 465 } 466 467 return s; 468 #undef NUM_BUFS 469 } 470 471 472 /* display a bit-field 473 */ 474 struct bits { 475 u_int bits_mask; 476 u_int bits_clear; 477 const char *bits_name; 478 }; 479 480 static struct bits if_bits[] = { 481 { IFF_LOOPBACK, 0, "LOOPBACK" }, 482 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 483 { 0, 0, 0} 484 }; 485 486 static struct bits is_bits[] = { 487 { IS_ALIAS, 0, "ALIAS" }, 488 { IS_SUBNET, 0, "" }, 489 { IS_REMOTE, (IS_NO_RDISC 490 | IS_BCAST_RDISC), "REMOTE" }, 491 { IS_PASSIVE, (IS_NO_RDISC 492 | IS_NO_RIP 493 | IS_NO_SUPER_AG 494 | IS_PM_RDISC 495 | IS_NO_AG), "PASSIVE" }, 496 { IS_EXTERNAL, 0, "EXTERNAL" }, 497 { IS_CHECKED, 0, "" }, 498 { IS_ALL_HOSTS, 0, "" }, 499 { IS_ALL_ROUTERS, 0, "" }, 500 { IS_DISTRUST, 0, "DISTRUST" }, 501 { IS_BROKE, IS_SICK, "BROKEN" }, 502 { IS_SICK, 0, "SICK" }, 503 { IS_DUP, 0, "DUPLICATE" }, 504 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 505 { IS_NEED_NET_SYN, 0, "" }, 506 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 507 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 508 { (IS_NO_RIPV1_IN 509 | IS_NO_RIPV2_IN 510 | IS_NO_RIPV1_OUT 511 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 512 { (IS_NO_RIPV1_IN 513 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 514 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 515 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 516 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 517 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 518 { (IS_NO_ADV_IN 519 | IS_NO_SOL_OUT 520 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 521 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 522 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 523 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 524 { IS_ADV_OUT, 0, "RDISC_ADV" }, 525 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 526 { IS_PM_RDISC, 0, "" }, 527 { 0, 0, "%#x"} 528 }; 529 530 static struct bits rs_bits[] = { 531 { RS_IF, 0, "IF" }, 532 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 533 { RS_NET_SYN, 0, "NET_SYN" }, 534 { RS_SUBNET, 0, "" }, 535 { RS_LOCAL, 0, "LOCAL" }, 536 { RS_MHOME, 0, "MHOME" }, 537 { RS_STATIC, 0, "STATIC" }, 538 { RS_RDISC, 0, "RDISC" }, 539 { 0, 0, "%#x"} 540 }; 541 542 543 static void 544 trace_bits(const struct bits *tbl, 545 u_int field, 546 int force) 547 { 548 u_int b; 549 char c; 550 551 if (force) { 552 (void)putc('<', ftrace); 553 c = 0; 554 } else { 555 c = '<'; 556 } 557 558 while (field != 0 559 && (b = tbl->bits_mask) != 0) { 560 if ((b & field) == b) { 561 if (tbl->bits_name[0] != '\0') { 562 if (c) 563 (void)putc(c, ftrace); 564 (void)fprintf(ftrace, "%s", tbl->bits_name); 565 c = '|'; 566 } 567 if (0 == (field &= ~(b | tbl->bits_clear))) 568 break; 569 } 570 tbl++; 571 } 572 if (field != 0 && tbl->bits_name != 0) { 573 if (c) 574 (void)putc(c, ftrace); 575 (void)fprintf(ftrace, tbl->bits_name, field); 576 c = '|'; 577 } 578 579 if (c != '<' || force) 580 (void)fputs("> ", ftrace); 581 } 582 583 584 char * 585 rtname(naddr dst, 586 naddr mask, 587 naddr gate) 588 { 589 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 590 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 591 int i; 592 593 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 594 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 595 return buf; 596 } 597 598 599 static void 600 print_rts(struct rt_spare *rts, 601 int force_metric, /* -1=suppress, 0=default */ 602 int force_ifp, /* -1=suppress, 0=default */ 603 int force_router, /* -1=suppress, 0=default, 1=display */ 604 int force_tag, /* -1=suppress, 0=default, 1=display */ 605 int force_time) /* 0=suppress, 1=display */ 606 { 607 int i; 608 609 610 if (force_metric >= 0) 611 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 612 if (force_ifp >= 0) 613 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 614 "if?" : rts->rts_ifp->int_name)); 615 if (force_router > 0 616 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 617 (void)fprintf(ftrace, "router=%s ", 618 naddr_ntoa(rts->rts_router)); 619 if (force_time > 0) 620 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 621 if (force_tag > 0 622 || (force_tag == 0 && rts->rts_tag != 0)) 623 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 624 if (rts->rts_de_ag != 0) { 625 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 626 continue; 627 (void)fprintf(ftrace, "de_ag=%d ", i); 628 } 629 630 } 631 632 633 void 634 trace_if(const char *act, 635 struct interface *ifp) 636 { 637 if (!TRACEACTIONS || ftrace == 0) 638 return; 639 640 lastlog(); 641 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 642 (void)fprintf(ftrace, "%-15s-->%-15s ", 643 naddr_ntoa(ifp->int_addr), 644 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 645 ? ifp->int_dstaddr 646 : htonl(ifp->int_net)), 647 ifp->int_mask, 1)); 648 if (ifp->int_metric != 0) 649 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 650 if (ifp->int_adj_inmetric != 0) 651 (void)fprintf(ftrace, "adj_inmetric=%u ", 652 ifp->int_adj_inmetric); 653 if (ifp->int_adj_outmetric != 0) 654 (void)fprintf(ftrace, "adj_outmetric=%u ", 655 ifp->int_adj_outmetric); 656 if (!IS_RIP_OUT_OFF(ifp->int_state) 657 && ifp->int_d_metric != 0) 658 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 659 trace_bits(if_bits, ifp->int_if_flags, 0); 660 trace_bits(is_bits, ifp->int_state, 0); 661 (void)fputc('\n',ftrace); 662 } 663 664 665 void 666 trace_upslot(struct rt_entry *rt, 667 struct rt_spare *rts, 668 struct rt_spare *new) 669 { 670 if (!TRACEACTIONS || ftrace == 0) 671 return; 672 673 if (rts->rts_gate == new->rts_gate 674 && rts->rts_router == new->rts_router 675 && rts->rts_metric == new->rts_metric 676 && rts->rts_tag == new->rts_tag 677 && rts->rts_de_ag == new->rts_de_ag) 678 return; 679 680 lastlog(); 681 if (new->rts_gate == 0) { 682 (void)fprintf(ftrace, "Del #%d %-35s ", 683 (int)(rts - rt->rt_spares), 684 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 685 print_rts(rts, 0,0,0,0, 686 (rts != rt->rt_spares 687 || AGE_RT(rt->rt_state,new->rts_ifp))); 688 689 } else if (rts->rts_gate != RIP_DEFAULT) { 690 (void)fprintf(ftrace, "Chg #%d %-35s ", 691 (int)(rts - rt->rt_spares), 692 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 693 print_rts(rts, 0,0, 694 rts->rts_gate != new->rts_gate, 695 rts->rts_tag != new->rts_tag, 696 rts != rt->rt_spares || AGE_RT(rt->rt_state, 697 rt->rt_ifp)); 698 699 (void)fprintf(ftrace, "\n %19s%-16s ", "", 700 (new->rts_gate != rts->rts_gate 701 ? naddr_ntoa(new->rts_gate) : "")); 702 print_rts(new, 703 -(new->rts_metric == rts->rts_metric), 704 -(new->rts_ifp == rts->rts_ifp), 705 0, 706 rts->rts_tag != new->rts_tag, 707 (new->rts_time != rts->rts_time 708 && (rts != rt->rt_spares 709 || AGE_RT(rt->rt_state, new->rts_ifp)))); 710 711 } else { 712 (void)fprintf(ftrace, "Add #%d %-35s ", 713 (int)(rts - rt->rt_spares), 714 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 715 print_rts(new, 0,0,0,0, 716 (rts != rt->rt_spares 717 || AGE_RT(rt->rt_state,new->rts_ifp))); 718 } 719 (void)fputc('\n',ftrace); 720 } 721 722 723 /* miscellaneous message checked by the caller 724 */ 725 void 726 trace_misc(const char *p, ...) 727 { 728 va_list args; 729 730 if (ftrace == 0) 731 return; 732 733 lastlog(); 734 va_start(args, p); 735 vfprintf(ftrace, p, args); 736 va_end(args); 737 (void)fputc('\n',ftrace); 738 } 739 740 741 /* display a message if tracing actions 742 */ 743 void 744 trace_act(const char *p, ...) 745 { 746 va_list args; 747 748 if (!TRACEACTIONS || ftrace == 0) 749 return; 750 751 lastlog(); 752 va_start(args, p); 753 vfprintf(ftrace, p, args); 754 va_end(args); 755 (void)fputc('\n',ftrace); 756 } 757 758 759 /* display a message if tracing packets 760 */ 761 void 762 trace_pkt(const char *p, ...) 763 { 764 va_list args; 765 766 if (!TRACEPACKETS || ftrace == 0) 767 return; 768 769 lastlog(); 770 va_start(args, p); 771 vfprintf(ftrace, p, args); 772 va_end(args); 773 (void)fputc('\n',ftrace); 774 } 775 776 777 void 778 trace_change(struct rt_entry *rt, 779 u_int state, 780 struct rt_spare *new, 781 const char *label) 782 { 783 if (ftrace == 0) 784 return; 785 786 if (rt->rt_metric == new->rts_metric 787 && rt->rt_gate == new->rts_gate 788 && rt->rt_router == new->rts_router 789 && rt->rt_state == state 790 && rt->rt_tag == new->rts_tag 791 && rt->rt_de_ag == new->rts_de_ag) 792 return; 793 794 lastlog(); 795 (void)fprintf(ftrace, "%s %-35s ", 796 label, 797 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 798 print_rts(rt->rt_spares, 799 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 800 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 801 802 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 803 (int)strlen(label), "", "", 804 (rt->rt_gate != new->rts_gate 805 ? naddr_ntoa(new->rts_gate) : "")); 806 print_rts(new, 807 -(new->rts_metric == rt->rt_metric), 808 -(new->rts_ifp == rt->rt_ifp), 809 0, 810 rt->rt_tag != new->rts_tag, 811 (rt->rt_time != new->rts_time 812 && AGE_RT(rt->rt_state,new->rts_ifp))); 813 if (rt->rt_state != state) 814 trace_bits(rs_bits, state, 1); 815 (void)fputc('\n',ftrace); 816 } 817 818 819 void 820 trace_add_del(const char * action, struct rt_entry *rt) 821 { 822 if (ftrace == 0) 823 return; 824 825 lastlog(); 826 (void)fprintf(ftrace, "%s %-35s ", 827 action, 828 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 829 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 830 trace_bits(rs_bits, rt->rt_state, 0); 831 (void)fputc('\n',ftrace); 832 } 833 834 835 /* ARGSUSED */ 836 static int 837 walk_trace(struct radix_node *rn, 838 struct walkarg *w UNUSED) 839 { 840 #define RT ((struct rt_entry *)rn) 841 struct rt_spare *rts; 842 int i; 843 844 (void)fprintf(ftrace, " %-35s ", 845 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 846 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 847 trace_bits(rs_bits, RT->rt_state, 0); 848 if (RT->rt_poison_time >= now_garbage 849 && RT->rt_poison_metric < RT->rt_metric) 850 (void)fprintf(ftrace, "pm=%d@%s", 851 RT->rt_poison_metric, ts(RT->rt_poison_time)); 852 853 rts = &RT->rt_spares[1]; 854 for (i = 1; i < NUM_SPARES; i++, rts++) { 855 if (rts->rts_gate != RIP_DEFAULT) { 856 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 857 i, "", naddr_ntoa(rts->rts_gate)); 858 print_rts(rts, 0,0,0,0,1); 859 } 860 } 861 (void)fputc('\n',ftrace); 862 863 return 0; 864 } 865 866 867 static void 868 trace_dump(void) 869 { 870 struct interface *ifp; 871 872 if (ftrace == 0) 873 return; 874 lastlog(); 875 876 (void)fputs("current daemon state:\n", ftrace); 877 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 878 trace_if("", ifp); 879 (void)rn_walktree(rhead, walk_trace, 0); 880 } 881 882 883 void 884 trace_rip(const char *dir1, const char *dir2, 885 struct sockaddr_in *who, 886 struct interface *ifp, 887 struct rip *msg, 888 int size) /* total size of message */ 889 { 890 struct netinfo *n, *lim; 891 # define NA ((struct netauth*)n) 892 int i, seen_route; 893 894 if (!TRACEPACKETS || ftrace == 0) 895 return; 896 897 lastlog(); 898 if (msg->rip_cmd >= RIPCMD_MAX 899 || msg->rip_vers == 0) { 900 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 901 " %s.%d size=%d\n", 902 dir1, msg->rip_vers, msg->rip_cmd, dir2, 903 naddr_ntoa(who->sin_addr.s_addr), 904 ntohs(who->sin_port), 905 size); 906 return; 907 } 908 909 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 910 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 911 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 912 ifp ? " via " : "", ifp ? ifp->int_name : ""); 913 if (!TRACECONTENTS) 914 return; 915 916 seen_route = 0; 917 switch (msg->rip_cmd) { 918 case RIPCMD_REQUEST: 919 case RIPCMD_RESPONSE: 920 n = msg->rip_nets; 921 lim = (struct netinfo *)((char*)msg + size); 922 for (; n < lim; n++) { 923 if (!seen_route 924 && n->n_family == RIP_AF_UNSPEC 925 && ntohl(n->n_metric) == HOPCNT_INFINITY 926 && msg->rip_cmd == RIPCMD_REQUEST 927 && (n+1 == lim 928 || (n+2 == lim 929 && (n+1)->n_family == RIP_AF_AUTH))) { 930 (void)fputs("\tQUERY ", ftrace); 931 if (n->n_dst != 0) 932 (void)fprintf(ftrace, "%s ", 933 naddr_ntoa(n->n_dst)); 934 if (n->n_mask != 0) 935 (void)fprintf(ftrace, "mask=%#x ", 936 (u_int)ntohl(n->n_mask)); 937 if (n->n_nhop != 0) 938 (void)fprintf(ftrace, "nhop=%s ", 939 naddr_ntoa(n->n_nhop)); 940 if (n->n_tag != 0) 941 (void)fprintf(ftrace, "tag=%#x ", 942 ntohs(n->n_tag)); 943 (void)fputc('\n',ftrace); 944 continue; 945 } 946 947 if (n->n_family == RIP_AF_AUTH) { 948 if (NA->a_type == RIP_AUTH_PW 949 && n == msg->rip_nets) { 950 (void)fprintf(ftrace, "\tPassword" 951 " Authentication:" 952 " \"%s\"\n", 953 qstring(NA->au.au_pw, 954 RIP_AUTH_PW_LEN)); 955 continue; 956 } 957 958 if (NA->a_type == RIP_AUTH_MD5 959 && n == msg->rip_nets) { 960 (void)fprintf(ftrace, 961 "\tMD5 Auth" 962 " pkt_len=%d KeyID=%u" 963 " auth_len=%d" 964 " seqno=%#x" 965 " rsvd=%#x,%#x\n", 966 ntohs(NA->au.a_md5.md5_pkt_len), 967 NA->au.a_md5.md5_keyid, 968 NA->au.a_md5.md5_auth_len, 969 (int)ntohl(NA->au.a_md5.md5_seqno), 970 (int)ntohs(NA->au.a_md5.rsvd[0]), 971 (int)ntohs(NA->au.a_md5.rsvd[1])); 972 continue; 973 } 974 (void)fprintf(ftrace, 975 "\tAuthentication type %d: ", 976 ntohs(NA->a_type)); 977 for (i = 0; 978 i < (int)sizeof(NA->au.au_pw); 979 i++) 980 (void)fprintf(ftrace, "%02x ", 981 NA->au.au_pw[i]); 982 (void)fputc('\n',ftrace); 983 continue; 984 } 985 986 seen_route = 1; 987 if (n->n_family != RIP_AF_INET) { 988 (void)fprintf(ftrace, 989 "\t(af %d) %-18s mask=%#x ", 990 ntohs(n->n_family), 991 naddr_ntoa(n->n_dst), 992 (u_int)ntohl(n->n_mask)); 993 } else if (msg->rip_vers == RIPv1) { 994 (void)fprintf(ftrace, "\t%-18s ", 995 addrname(n->n_dst, 996 ntohl(n->n_mask), 997 n->n_mask==0 ? 2 : 1)); 998 } else { 999 (void)fprintf(ftrace, "\t%-18s ", 1000 addrname(n->n_dst, 1001 ntohl(n->n_mask), 1002 n->n_mask==0 ? 2 : 0)); 1003 } 1004 (void)fprintf(ftrace, "metric=%-2d ", 1005 (u_int)ntohl(n->n_metric)); 1006 if (n->n_nhop != 0) 1007 (void)fprintf(ftrace, " nhop=%s ", 1008 naddr_ntoa(n->n_nhop)); 1009 if (n->n_tag != 0) 1010 (void)fprintf(ftrace, "tag=%#x", 1011 ntohs(n->n_tag)); 1012 (void)fputc('\n',ftrace); 1013 } 1014 if (size != (char *)n - (char *)msg) 1015 (void)fprintf(ftrace, "truncated record, len %d\n", 1016 size); 1017 break; 1018 1019 case RIPCMD_TRACEON: 1020 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1021 msg->rip_tracefile); 1022 break; 1023 1024 case RIPCMD_TRACEOFF: 1025 break; 1026 } 1027 } 1028