1 /* $NetBSD: trace.c,v 1.32 2009/04/06 12:36:27 lukem 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 1.32 2009/04/06 12:36:27 lukem 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 int n; 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 n = snprintf(p, sizeof(buf) - (p - buf), "%o", c); 115 if (n <= 0) 116 goto exit; 117 p += n; 118 break; 119 } 120 } 121 exit: 122 *p = '\0'; 123 return buf; 124 } 125 126 127 /* convert IP address to a string, but not into a single buffer 128 */ 129 char * 130 naddr_ntoa(naddr a) 131 { 132 #define NUM_BUFS 4 133 static int bufno; 134 static struct { 135 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 136 } bufs[NUM_BUFS]; 137 char *s; 138 struct in_addr addr; 139 140 addr.s_addr = a; 141 strlcpy(bufs[bufno].str, inet_ntoa(addr), sizeof(bufs[bufno].str)); 142 s = bufs[bufno].str; 143 bufno = (bufno+1) % NUM_BUFS; 144 return s; 145 #undef NUM_BUFS 146 } 147 148 149 const char * 150 saddr_ntoa(const struct sockaddr *sa) 151 { 152 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 153 } 154 155 156 static char * 157 ts(time_t secs) { 158 static char s[20]; 159 160 secs += epoch.tv_sec; 161 #ifdef sgi 162 (void)cftime(s, "%T", &secs); 163 #else 164 memcpy(s, ctime(&secs)+11, 8); 165 s[8] = '\0'; 166 #endif 167 return s; 168 } 169 170 171 /* On each event, display a time stamp. 172 * This assumes that 'now' is update once for each event, and 173 * that at least now.tv_usec changes. 174 */ 175 static struct timeval lastlog_time; 176 177 void 178 lastlog(void) 179 { 180 if (lastlog_time.tv_sec != now.tv_sec 181 || lastlog_time.tv_usec != now.tv_usec) { 182 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 183 lastlog_time = now; 184 } 185 } 186 187 188 static void 189 tmsg(const char *p, ...) 190 { 191 va_list args; 192 193 if (ftrace != 0) { 194 lastlog(); 195 va_start(args, p); 196 vfprintf(ftrace, p, args); 197 va_end(args); 198 (void)fputc('\n',ftrace); 199 fflush(ftrace); 200 } 201 } 202 203 204 void 205 trace_close(int zap_stdio) 206 { 207 int fd; 208 209 210 fflush(stdout); 211 fflush(stderr); 212 213 if (ftrace != 0 && zap_stdio) { 214 if (ftrace != stdout) 215 fclose(ftrace); 216 ftrace = 0; 217 fd = open(_PATH_DEVNULL, O_RDWR); 218 if (fd == -1) 219 return; 220 if (isatty(STDIN_FILENO)) 221 (void)dup2(fd, STDIN_FILENO); 222 if (isatty(STDOUT_FILENO)) 223 (void)dup2(fd, STDOUT_FILENO); 224 if (isatty(STDERR_FILENO)) 225 (void)dup2(fd, STDERR_FILENO); 226 (void)close(fd); 227 } 228 lastlog_time.tv_sec = 0; 229 } 230 231 232 void 233 trace_flush(void) 234 { 235 if (ftrace != 0) { 236 fflush(ftrace); 237 if (ferror(ftrace)) 238 trace_off("tracing off: %s", strerror(ferror(ftrace))); 239 } 240 } 241 242 243 void 244 trace_off(const char *p, ...) 245 { 246 va_list args; 247 248 249 if (ftrace != 0) { 250 lastlog(); 251 va_start(args, p); 252 vfprintf(ftrace, p, args); 253 va_end(args); 254 (void)fputc('\n',ftrace); 255 } 256 trace_close(file_trace); 257 258 new_tracelevel = tracelevel = 0; 259 } 260 261 262 /* log a change in tracing 263 */ 264 void 265 tracelevel_msg(const char *pat, 266 int dump) /* -1=no dump, 0=default, 1=force */ 267 { 268 static const char *off_msgs[MAX_TRACELEVEL] = { 269 "Tracing actions stopped", 270 "Tracing packets stopped", 271 "Tracing packet contents stopped", 272 "Tracing kernel changes stopped", 273 }; 274 static const char *on_msgs[MAX_TRACELEVEL] = { 275 "Tracing actions started", 276 "Tracing packets started", 277 "Tracing packet contents started", 278 "Tracing kernel changes started", 279 }; 280 u_int old_tracelevel = tracelevel; 281 282 283 if (new_tracelevel < 0) 284 new_tracelevel = 0; 285 else if (new_tracelevel > MAX_TRACELEVEL) 286 new_tracelevel = MAX_TRACELEVEL; 287 288 if (new_tracelevel < tracelevel) { 289 if (new_tracelevel <= 0) { 290 trace_off(pat, off_msgs[0]); 291 } else do { 292 tmsg(pat, off_msgs[tracelevel]); 293 } 294 while (--tracelevel != new_tracelevel); 295 296 } else if (new_tracelevel > tracelevel) { 297 do { 298 tmsg(pat, on_msgs[tracelevel++]); 299 } while (tracelevel != new_tracelevel); 300 } 301 302 if (dump > 0 303 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 304 trace_dump(); 305 } 306 307 308 void 309 set_tracefile(const char *filename, 310 const char *pat, 311 int dump) /* -1=no dump, 0=default, 1=force */ 312 { 313 struct stat stbuf; 314 FILE *n_ftrace; 315 const char *fn; 316 317 318 /* Allow a null filename to increase the level if the trace file 319 * is already open or if coming from a trusted source, such as 320 * a signal or the command line. 321 */ 322 if (filename == 0 || filename[0] == '\0') { 323 filename = 0; 324 if (ftrace == 0) { 325 if (inittracename[0] == '\0') { 326 msglog("missing trace file name"); 327 return; 328 } 329 fn = inittracename; 330 } else { 331 fn = 0; 332 } 333 334 } else if (!strcmp(filename,"dump/../table")) { 335 trace_dump(); 336 return; 337 338 } else { 339 /* Allow the file specified with "-T file" to be reopened, 340 * but require all other names specified over the net to 341 * match the official path. The path can specify a directory 342 * in which the file is to be created. 343 */ 344 if (strcmp(filename, inittracename) 345 #ifdef _PATH_TRACE 346 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 347 || strstr(filename,"../") 348 || 0 > stat(_PATH_TRACE, &stbuf)) 349 #endif 350 ) { 351 msglog("wrong trace file \"%s\"", filename); 352 return; 353 } 354 355 /* If the new tracefile exists, it must be a regular file. 356 */ 357 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 358 msglog("wrong type (%#x) of trace file \"%s\"", 359 stbuf.st_mode, filename); 360 return; 361 } 362 363 fn = filename; 364 } 365 366 if (fn != 0) { 367 n_ftrace = fopen(fn, "a"); 368 if (n_ftrace == 0) { 369 msglog("failed to open trace file \"%s\" %s", 370 fn, strerror(errno)); 371 if (fn == inittracename) 372 inittracename[0] = '\0'; 373 return; 374 } 375 376 tmsg("switch to trace file %s", fn); 377 378 trace_close(file_trace = 1); 379 380 if (fn != savetracename) 381 strlcpy(savetracename, fn, sizeof(savetracename)); 382 ftrace = n_ftrace; 383 384 fflush(stdout); 385 fflush(stderr); 386 dup2(fileno(ftrace), STDOUT_FILENO); 387 dup2(fileno(ftrace), STDERR_FILENO); 388 } 389 390 if (new_tracelevel == 0 || filename == 0) 391 new_tracelevel++; 392 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 393 } 394 395 396 /* ARGSUSED */ 397 void 398 sigtrace_on(int s UNUSED) 399 { 400 new_tracelevel++; 401 sigtrace_pat = "SIGUSR1: %s"; 402 } 403 404 405 /* ARGSUSED */ 406 void 407 sigtrace_off(int s UNUSED) 408 { 409 new_tracelevel--; 410 sigtrace_pat = "SIGUSR2: %s"; 411 } 412 413 414 /* Set tracing after a signal. 415 */ 416 void 417 set_tracelevel(void) 418 { 419 if (new_tracelevel == tracelevel) 420 return; 421 422 /* If tracing entirely off, and there was no tracefile specified 423 * on the command line, then leave it off. 424 */ 425 if (new_tracelevel > tracelevel && ftrace == 0) { 426 if (savetracename[0] != '\0') { 427 set_tracefile(savetracename,sigtrace_pat,0); 428 } else if (inittracename[0] != '\0') { 429 set_tracefile(inittracename,sigtrace_pat,0); 430 } else { 431 new_tracelevel = 0; 432 return; 433 } 434 } else { 435 tracelevel_msg(sigtrace_pat, 0); 436 } 437 } 438 439 440 /* display an address 441 */ 442 char * 443 addrname(naddr addr, /* in network byte order */ 444 naddr mask, 445 int force) /* 0=show mask if nonstandard, */ 446 { /* 1=always show mask, 2=never */ 447 #define NUM_BUFS 4 448 static int bufno; 449 static struct { 450 char str[15+20]; 451 } bufs[NUM_BUFS]; 452 char *s, *sp; 453 naddr dmask; 454 size_t l; 455 int i; 456 457 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str)); 458 s = bufs[bufno].str; 459 l = sizeof(bufs[bufno].str); 460 bufno = (bufno+1) % NUM_BUFS; 461 462 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 463 sp = &s[strlen(s)]; 464 465 dmask = mask & -mask; 466 if (mask + dmask == 0) { 467 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 468 continue; 469 (void)snprintf(sp, s + l - sp, "/%d", 32-i); 470 471 } else { 472 (void)snprintf(sp, s + l - sp, " (mask %#x)", 473 (u_int)mask); 474 } 475 } 476 477 return s; 478 #undef NUM_BUFS 479 } 480 481 482 /* display a bit-field 483 */ 484 struct bits { 485 u_int bits_mask; 486 u_int bits_clear; 487 const char *bits_name; 488 }; 489 490 static struct bits if_bits[] = { 491 { IFF_LOOPBACK, 0, "LOOPBACK" }, 492 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 493 { 0, 0, 0} 494 }; 495 496 static struct bits is_bits[] = { 497 { IS_ALIAS, 0, "ALIAS" }, 498 { IS_SUBNET, 0, "" }, 499 { IS_REMOTE, (IS_NO_RDISC 500 | IS_BCAST_RDISC), "REMOTE" }, 501 { IS_PASSIVE, (IS_NO_RDISC 502 | IS_NO_RIP 503 | IS_NO_SUPER_AG 504 | IS_PM_RDISC 505 | IS_NO_AG), "PASSIVE" }, 506 { IS_EXTERNAL, 0, "EXTERNAL" }, 507 { IS_CHECKED, 0, "" }, 508 { IS_ALL_HOSTS, 0, "" }, 509 { IS_ALL_ROUTERS, 0, "" }, 510 { IS_DISTRUST, 0, "DISTRUST" }, 511 { IS_BROKE, IS_SICK, "BROKEN" }, 512 { IS_SICK, 0, "SICK" }, 513 { IS_DUP, 0, "DUPLICATE" }, 514 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 515 { IS_NEED_NET_SYN, 0, "" }, 516 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 517 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 518 { (IS_NO_RIPV1_IN 519 | IS_NO_RIPV2_IN 520 | IS_NO_RIPV1_OUT 521 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 522 { (IS_NO_RIPV1_IN 523 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 524 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 525 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 526 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 527 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 528 { (IS_NO_ADV_IN 529 | IS_NO_SOL_OUT 530 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 531 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 532 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 533 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 534 { IS_ADV_OUT, 0, "RDISC_ADV" }, 535 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 536 { IS_PM_RDISC, 0, "" }, 537 { 0, 0, "%#x"} 538 }; 539 540 static struct bits rs_bits[] = { 541 { RS_IF, 0, "IF" }, 542 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 543 { RS_NET_SYN, 0, "NET_SYN" }, 544 { RS_SUBNET, 0, "" }, 545 { RS_LOCAL, 0, "LOCAL" }, 546 { RS_MHOME, 0, "MHOME" }, 547 { RS_STATIC, 0, "STATIC" }, 548 { RS_RDISC, 0, "RDISC" }, 549 { 0, 0, "%#x"} 550 }; 551 552 553 static void 554 trace_bits(const struct bits *tbl, 555 u_int field, 556 int force) 557 { 558 u_int b; 559 char c; 560 561 if (force) { 562 (void)putc('<', ftrace); 563 c = 0; 564 } else { 565 c = '<'; 566 } 567 568 while (field != 0 569 && (b = tbl->bits_mask) != 0) { 570 if ((b & field) == b) { 571 if (tbl->bits_name[0] != '\0') { 572 if (c) 573 (void)putc(c, ftrace); 574 (void)fprintf(ftrace, "%s", tbl->bits_name); 575 c = '|'; 576 } 577 if (0 == (field &= ~(b | tbl->bits_clear))) 578 break; 579 } 580 tbl++; 581 } 582 if (field != 0 && tbl->bits_name != 0) { 583 if (c) 584 (void)putc(c, ftrace); 585 (void)fprintf(ftrace, tbl->bits_name, field); 586 c = '|'; 587 } 588 589 if (c != '<' || force) 590 (void)fputs("> ", ftrace); 591 } 592 593 594 char * 595 rtname(naddr dst, 596 naddr mask, 597 naddr gate) 598 { 599 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 600 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 601 int i; 602 603 i = snprintf(buf, sizeof(buf), "%-16s-->", addrname(dst, mask, 0)); 604 if (i < 0 || (size_t)i >= sizeof(buf)) 605 return buf; 606 (void)snprintf(&buf[i], sizeof(buf) - i, "%-*s", 15+20-MAX(20, i), 607 naddr_ntoa(gate)); 608 return buf; 609 } 610 611 612 static void 613 print_rts(struct rt_spare *rts, 614 int force_metric, /* -1=suppress, 0=default */ 615 int force_ifp, /* -1=suppress, 0=default */ 616 int force_router, /* -1=suppress, 0=default, 1=display */ 617 int force_tag, /* -1=suppress, 0=default, 1=display */ 618 int force_time) /* 0=suppress, 1=display */ 619 { 620 int i; 621 622 623 if (force_metric >= 0) 624 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 625 if (force_ifp >= 0) 626 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 627 "if?" : rts->rts_ifp->int_name)); 628 if (force_router > 0 629 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 630 (void)fprintf(ftrace, "router=%s ", 631 naddr_ntoa(rts->rts_router)); 632 if (force_time > 0) 633 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 634 if (force_tag > 0 635 || (force_tag == 0 && rts->rts_tag != 0)) 636 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 637 if (rts->rts_de_ag != 0) { 638 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 639 continue; 640 (void)fprintf(ftrace, "de_ag=%d ", i); 641 } 642 643 } 644 645 646 void 647 trace_if(const char *act, 648 struct interface *ifp) 649 { 650 if (!TRACEACTIONS || ftrace == 0) 651 return; 652 653 lastlog(); 654 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 655 (void)fprintf(ftrace, "%-15s-->%-15s ", 656 naddr_ntoa(ifp->int_addr), 657 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 658 ? ifp->int_dstaddr 659 : htonl(ifp->int_net)), 660 ifp->int_mask, 1)); 661 if (ifp->int_metric != 0) 662 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 663 if (ifp->int_adj_inmetric != 0) 664 (void)fprintf(ftrace, "adj_inmetric=%u ", 665 ifp->int_adj_inmetric); 666 if (ifp->int_adj_outmetric != 0) 667 (void)fprintf(ftrace, "adj_outmetric=%u ", 668 ifp->int_adj_outmetric); 669 if (!IS_RIP_OUT_OFF(ifp->int_state) 670 && ifp->int_d_metric != 0) 671 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 672 trace_bits(if_bits, ifp->int_if_flags, 0); 673 trace_bits(is_bits, ifp->int_state, 0); 674 (void)fputc('\n',ftrace); 675 } 676 677 678 void 679 trace_upslot(struct rt_entry *rt, 680 struct rt_spare *rts, 681 struct rt_spare *new) 682 { 683 if (!TRACEACTIONS || ftrace == 0) 684 return; 685 686 if (rts->rts_gate == new->rts_gate 687 && rts->rts_router == new->rts_router 688 && rts->rts_metric == new->rts_metric 689 && rts->rts_tag == new->rts_tag 690 && rts->rts_de_ag == new->rts_de_ag) 691 return; 692 693 lastlog(); 694 if (new->rts_gate == 0) { 695 (void)fprintf(ftrace, "Del #%d %-35s ", 696 (int)(rts - rt->rt_spares), 697 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 698 print_rts(rts, 0,0,0,0, 699 (rts != rt->rt_spares 700 || AGE_RT(rt->rt_state,new->rts_ifp))); 701 702 } else if (rts->rts_gate != RIP_DEFAULT) { 703 (void)fprintf(ftrace, "Chg #%d %-35s ", 704 (int)(rts - rt->rt_spares), 705 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 706 print_rts(rts, 0,0, 707 rts->rts_gate != new->rts_gate, 708 rts->rts_tag != new->rts_tag, 709 rts != rt->rt_spares || AGE_RT(rt->rt_state, 710 rt->rt_ifp)); 711 712 (void)fprintf(ftrace, "\n %19s%-16s ", "", 713 (new->rts_gate != rts->rts_gate 714 ? naddr_ntoa(new->rts_gate) : "")); 715 print_rts(new, 716 -(new->rts_metric == rts->rts_metric), 717 -(new->rts_ifp == rts->rts_ifp), 718 0, 719 rts->rts_tag != new->rts_tag, 720 (new->rts_time != rts->rts_time 721 && (rts != rt->rt_spares 722 || AGE_RT(rt->rt_state, new->rts_ifp)))); 723 724 } else { 725 (void)fprintf(ftrace, "Add #%d %-35s ", 726 (int)(rts - rt->rt_spares), 727 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 728 print_rts(new, 0,0,0,0, 729 (rts != rt->rt_spares 730 || AGE_RT(rt->rt_state,new->rts_ifp))); 731 } 732 (void)fputc('\n',ftrace); 733 } 734 735 736 /* miscellaneous message checked by the caller 737 */ 738 void 739 trace_misc(const char *p, ...) 740 { 741 va_list args; 742 743 if (ftrace == 0) 744 return; 745 746 lastlog(); 747 va_start(args, p); 748 vfprintf(ftrace, p, args); 749 va_end(args); 750 (void)fputc('\n',ftrace); 751 } 752 753 754 /* display a message if tracing actions 755 */ 756 void 757 trace_act(const char *p, ...) 758 { 759 va_list args; 760 761 if (!TRACEACTIONS || ftrace == 0) 762 return; 763 764 lastlog(); 765 va_start(args, p); 766 vfprintf(ftrace, p, args); 767 va_end(args); 768 (void)fputc('\n',ftrace); 769 } 770 771 772 /* display a message if tracing packets 773 */ 774 void 775 trace_pkt(const char *p, ...) 776 { 777 va_list args; 778 779 if (!TRACEPACKETS || ftrace == 0) 780 return; 781 782 lastlog(); 783 va_start(args, p); 784 vfprintf(ftrace, p, args); 785 va_end(args); 786 (void)fputc('\n',ftrace); 787 } 788 789 790 void 791 trace_change(struct rt_entry *rt, 792 u_int state, 793 struct rt_spare *new, 794 const char *label) 795 { 796 if (ftrace == 0) 797 return; 798 799 if (rt->rt_metric == new->rts_metric 800 && rt->rt_gate == new->rts_gate 801 && rt->rt_router == new->rts_router 802 && rt->rt_state == state 803 && rt->rt_tag == new->rts_tag 804 && rt->rt_de_ag == new->rts_de_ag) 805 return; 806 807 lastlog(); 808 (void)fprintf(ftrace, "%s %-35s ", 809 label, 810 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 811 print_rts(rt->rt_spares, 812 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 813 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 814 815 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 816 (int)strlen(label), "", "", 817 (rt->rt_gate != new->rts_gate 818 ? naddr_ntoa(new->rts_gate) : "")); 819 print_rts(new, 820 -(new->rts_metric == rt->rt_metric), 821 -(new->rts_ifp == rt->rt_ifp), 822 0, 823 rt->rt_tag != new->rts_tag, 824 (rt->rt_time != new->rts_time 825 && AGE_RT(rt->rt_state,new->rts_ifp))); 826 if (rt->rt_state != state) 827 trace_bits(rs_bits, state, 1); 828 (void)fputc('\n',ftrace); 829 } 830 831 832 void 833 trace_add_del(const char * action, struct rt_entry *rt) 834 { 835 if (ftrace == 0) 836 return; 837 838 lastlog(); 839 (void)fprintf(ftrace, "%s %-35s ", 840 action, 841 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 842 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 843 trace_bits(rs_bits, rt->rt_state, 0); 844 (void)fputc('\n',ftrace); 845 } 846 847 848 /* ARGSUSED */ 849 static int 850 walk_trace(struct radix_node *rn, 851 struct walkarg *w UNUSED) 852 { 853 #define RT ((struct rt_entry *)rn) 854 struct rt_spare *rts; 855 int i; 856 857 (void)fprintf(ftrace, " %-35s ", 858 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 859 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 860 trace_bits(rs_bits, RT->rt_state, 0); 861 if (RT->rt_poison_time >= now_garbage 862 && RT->rt_poison_metric < RT->rt_metric) 863 (void)fprintf(ftrace, "pm=%d@%s", 864 RT->rt_poison_metric, ts(RT->rt_poison_time)); 865 866 rts = &RT->rt_spares[1]; 867 for (i = 1; i < NUM_SPARES; i++, rts++) { 868 if (rts->rts_gate != RIP_DEFAULT) { 869 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 870 i, "", naddr_ntoa(rts->rts_gate)); 871 print_rts(rts, 0,0,0,0,1); 872 } 873 } 874 (void)fputc('\n',ftrace); 875 876 return 0; 877 } 878 879 880 static void 881 trace_dump(void) 882 { 883 struct interface *ifp; 884 885 if (ftrace == 0) 886 return; 887 lastlog(); 888 889 (void)fputs("current daemon state:\n", ftrace); 890 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 891 trace_if("", ifp); 892 (void)rn_walktree(rhead, walk_trace, 0); 893 } 894 895 896 void 897 trace_rip(const char *dir1, const char *dir2, 898 struct sockaddr_in *who, 899 struct interface *ifp, 900 struct rip *msg, 901 int size) /* total size of message */ 902 { 903 struct netinfo *n, *lim; 904 # define NA ((struct netauth*)n) 905 int i, seen_route; 906 907 if (!TRACEPACKETS || ftrace == 0) 908 return; 909 910 lastlog(); 911 if (msg->rip_cmd >= RIPCMD_MAX 912 || msg->rip_vers == 0) { 913 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 914 " %s.%d size=%d\n", 915 dir1, msg->rip_vers, msg->rip_cmd, dir2, 916 naddr_ntoa(who->sin_addr.s_addr), 917 ntohs(who->sin_port), 918 size); 919 return; 920 } 921 922 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 923 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 924 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 925 ifp ? " via " : "", ifp ? ifp->int_name : ""); 926 if (!TRACECONTENTS) 927 return; 928 929 seen_route = 0; 930 switch (msg->rip_cmd) { 931 case RIPCMD_REQUEST: 932 case RIPCMD_RESPONSE: 933 n = msg->rip_nets; 934 lim = (struct netinfo *)((char*)msg + size); 935 for (; n < lim; n++) { 936 if (!seen_route 937 && n->n_family == RIP_AF_UNSPEC 938 && ntohl(n->n_metric) == HOPCNT_INFINITY 939 && msg->rip_cmd == RIPCMD_REQUEST 940 && (n+1 == lim 941 || (n+2 == lim 942 && (n+1)->n_family == RIP_AF_AUTH))) { 943 (void)fputs("\tQUERY ", ftrace); 944 if (n->n_dst != 0) 945 (void)fprintf(ftrace, "%s ", 946 naddr_ntoa(n->n_dst)); 947 if (n->n_mask != 0) 948 (void)fprintf(ftrace, "mask=%#x ", 949 (u_int)ntohl(n->n_mask)); 950 if (n->n_nhop != 0) 951 (void)fprintf(ftrace, "nhop=%s ", 952 naddr_ntoa(n->n_nhop)); 953 if (n->n_tag != 0) 954 (void)fprintf(ftrace, "tag=%#x ", 955 ntohs(n->n_tag)); 956 (void)fputc('\n',ftrace); 957 continue; 958 } 959 960 if (n->n_family == RIP_AF_AUTH) { 961 if (NA->a_type == RIP_AUTH_PW 962 && n == msg->rip_nets) { 963 (void)fprintf(ftrace, "\tPassword" 964 " Authentication:" 965 " \"%s\"\n", 966 qstring(NA->au.au_pw, 967 RIP_AUTH_PW_LEN)); 968 continue; 969 } 970 971 if (NA->a_type == RIP_AUTH_MD5 972 && n == msg->rip_nets) { 973 (void)fprintf(ftrace, 974 "\tMD5 Auth" 975 " pkt_len=%d KeyID=%u" 976 " auth_len=%d" 977 " seqno=%#x" 978 " rsvd=%#x,%#x\n", 979 ntohs(NA->au.a_md5.md5_pkt_len), 980 NA->au.a_md5.md5_keyid, 981 NA->au.a_md5.md5_auth_len, 982 (int)ntohl(NA->au.a_md5.md5_seqno), 983 (int)ntohs(NA->au.a_md5.rsvd[0]), 984 (int)ntohs(NA->au.a_md5.rsvd[1])); 985 continue; 986 } 987 (void)fprintf(ftrace, 988 "\tAuthentication type %d: ", 989 ntohs(NA->a_type)); 990 for (i = 0; 991 i < (int)sizeof(NA->au.au_pw); 992 i++) 993 (void)fprintf(ftrace, "%02x ", 994 NA->au.au_pw[i]); 995 (void)fputc('\n',ftrace); 996 continue; 997 } 998 999 seen_route = 1; 1000 if (n->n_family != RIP_AF_INET) { 1001 (void)fprintf(ftrace, 1002 "\t(af %d) %-18s mask=%#x ", 1003 ntohs(n->n_family), 1004 naddr_ntoa(n->n_dst), 1005 (u_int)ntohl(n->n_mask)); 1006 } else if (msg->rip_vers == RIPv1) { 1007 (void)fprintf(ftrace, "\t%-18s ", 1008 addrname(n->n_dst, 1009 ntohl(n->n_mask), 1010 n->n_mask==0 ? 2 : 1)); 1011 } else { 1012 (void)fprintf(ftrace, "\t%-18s ", 1013 addrname(n->n_dst, 1014 ntohl(n->n_mask), 1015 n->n_mask==0 ? 2 : 0)); 1016 } 1017 (void)fprintf(ftrace, "metric=%-2d ", 1018 (u_int)ntohl(n->n_metric)); 1019 if (n->n_nhop != 0) 1020 (void)fprintf(ftrace, " nhop=%s ", 1021 naddr_ntoa(n->n_nhop)); 1022 if (n->n_tag != 0) 1023 (void)fprintf(ftrace, "tag=%#x", 1024 ntohs(n->n_tag)); 1025 (void)fputc('\n',ftrace); 1026 } 1027 if (size != (char *)n - (char *)msg) 1028 (void)fprintf(ftrace, "truncated record, len %d\n", 1029 size); 1030 break; 1031 1032 case RIPCMD_TRACEON: 1033 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1034 msg->rip_tracefile); 1035 break; 1036 1037 case RIPCMD_TRACEOFF: 1038 break; 1039 } 1040 } 1041