trace.c revision 1.29
1 /* $NetBSD: trace.c,v 1.29 2003/07/12 14:36:07 itojun 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 1.29 2003/07/12 14:36:07 itojun 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(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 (isatty(STDIN_FILENO)) 219 (void)dup2(fd, STDIN_FILENO); 220 if (isatty(STDOUT_FILENO)) 221 (void)dup2(fd, STDOUT_FILENO); 222 if (isatty(STDERR_FILENO)) 223 (void)dup2(fd, STDERR_FILENO); 224 (void)close(fd); 225 } 226 lastlog_time.tv_sec = 0; 227 } 228 229 230 void 231 trace_flush(void) 232 { 233 if (ftrace != 0) { 234 fflush(ftrace); 235 if (ferror(ftrace)) 236 trace_off("tracing off: %s", strerror(ferror(ftrace))); 237 } 238 } 239 240 241 void 242 trace_off(const char *p, ...) 243 { 244 va_list args; 245 246 247 if (ftrace != 0) { 248 lastlog(); 249 va_start(args, p); 250 vfprintf(ftrace, p, args); 251 va_end(args); 252 (void)fputc('\n',ftrace); 253 } 254 trace_close(file_trace); 255 256 new_tracelevel = tracelevel = 0; 257 } 258 259 260 /* log a change in tracing 261 */ 262 void 263 tracelevel_msg(const char *pat, 264 int dump) /* -1=no dump, 0=default, 1=force */ 265 { 266 static const char *off_msgs[MAX_TRACELEVEL] = { 267 "Tracing actions stopped", 268 "Tracing packets stopped", 269 "Tracing packet contents stopped", 270 "Tracing kernel changes stopped", 271 }; 272 static const char *on_msgs[MAX_TRACELEVEL] = { 273 "Tracing actions started", 274 "Tracing packets started", 275 "Tracing packet contents started", 276 "Tracing kernel changes started", 277 }; 278 u_int old_tracelevel = tracelevel; 279 280 281 if (new_tracelevel < 0) 282 new_tracelevel = 0; 283 else if (new_tracelevel > MAX_TRACELEVEL) 284 new_tracelevel = MAX_TRACELEVEL; 285 286 if (new_tracelevel < tracelevel) { 287 if (new_tracelevel <= 0) { 288 trace_off(pat, off_msgs[0]); 289 } else do { 290 tmsg(pat, off_msgs[tracelevel]); 291 } 292 while (--tracelevel != new_tracelevel); 293 294 } else if (new_tracelevel > tracelevel) { 295 do { 296 tmsg(pat, on_msgs[tracelevel++]); 297 } while (tracelevel != new_tracelevel); 298 } 299 300 if (dump > 0 301 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 302 trace_dump(); 303 } 304 305 306 void 307 set_tracefile(const char *filename, 308 const char *pat, 309 int dump) /* -1=no dump, 0=default, 1=force */ 310 { 311 struct stat stbuf; 312 FILE *n_ftrace; 313 const char *fn; 314 315 316 /* Allow a null filename to increase the level if the trace file 317 * is already open or if coming from a trusted source, such as 318 * a signal or the command line. 319 */ 320 if (filename == 0 || filename[0] == '\0') { 321 filename = 0; 322 if (ftrace == 0) { 323 if (inittracename[0] == '\0') { 324 msglog("missing trace file name"); 325 return; 326 } 327 fn = inittracename; 328 } else { 329 fn = 0; 330 } 331 332 } else if (!strcmp(filename,"dump/../table")) { 333 trace_dump(); 334 return; 335 336 } else { 337 /* Allow the file specified with "-T file" to be reopened, 338 * but require all other names specified over the net to 339 * match the official path. The path can specify a directory 340 * in which the file is to be created. 341 */ 342 if (strcmp(filename, inittracename) 343 #ifdef _PATH_TRACE 344 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 345 || strstr(filename,"../") 346 || 0 > stat(_PATH_TRACE, &stbuf)) 347 #endif 348 ) { 349 msglog("wrong trace file \"%s\"", filename); 350 return; 351 } 352 353 /* If the new tracefile exists, it must be a regular file. 354 */ 355 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 356 msglog("wrong type (%#x) of trace file \"%s\"", 357 stbuf.st_mode, filename); 358 return; 359 } 360 361 fn = filename; 362 } 363 364 if (fn != 0) { 365 n_ftrace = fopen(fn, "a"); 366 if (n_ftrace == 0) { 367 msglog("failed to open trace file \"%s\" %s", 368 fn, strerror(errno)); 369 if (fn == inittracename) 370 inittracename[0] = '\0'; 371 return; 372 } 373 374 tmsg("switch to trace file %s", fn); 375 376 trace_close(file_trace = 1); 377 378 if (fn != savetracename) 379 strlcpy(savetracename, fn, sizeof(savetracename)); 380 ftrace = n_ftrace; 381 382 fflush(stdout); 383 fflush(stderr); 384 dup2(fileno(ftrace), STDOUT_FILENO); 385 dup2(fileno(ftrace), STDERR_FILENO); 386 } 387 388 if (new_tracelevel == 0 || filename == 0) 389 new_tracelevel++; 390 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 391 } 392 393 394 /* ARGSUSED */ 395 void 396 sigtrace_on(int s UNUSED) 397 { 398 new_tracelevel++; 399 sigtrace_pat = "SIGUSR1: %s"; 400 } 401 402 403 /* ARGSUSED */ 404 void 405 sigtrace_off(int s UNUSED) 406 { 407 new_tracelevel--; 408 sigtrace_pat = "SIGUSR2: %s"; 409 } 410 411 412 /* Set tracing after a signal. 413 */ 414 void 415 set_tracelevel(void) 416 { 417 if (new_tracelevel == tracelevel) 418 return; 419 420 /* If tracing entirely off, and there was no tracefile specified 421 * on the command line, then leave it off. 422 */ 423 if (new_tracelevel > tracelevel && ftrace == 0) { 424 if (savetracename[0] != '\0') { 425 set_tracefile(savetracename,sigtrace_pat,0); 426 } else if (inittracename[0] != '\0') { 427 set_tracefile(inittracename,sigtrace_pat,0); 428 } else { 429 new_tracelevel = 0; 430 return; 431 } 432 } else { 433 tracelevel_msg(sigtrace_pat, 0); 434 } 435 } 436 437 438 /* display an address 439 */ 440 char * 441 addrname(naddr addr, /* in network byte order */ 442 naddr mask, 443 int force) /* 0=show mask if nonstandard, */ 444 { /* 1=always show mask, 2=never */ 445 #define NUM_BUFS 4 446 static int bufno; 447 static struct { 448 char str[15+20]; 449 } bufs[NUM_BUFS]; 450 char *s, *sp; 451 naddr dmask; 452 size_t l; 453 int i; 454 455 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str)); 456 s = bufs[bufno].str; 457 l = sizeof(bufs[bufno].str); 458 bufno = (bufno+1) % NUM_BUFS; 459 460 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 461 sp = &s[strlen(s)]; 462 463 dmask = mask & -mask; 464 if (mask + dmask == 0) { 465 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 466 continue; 467 (void)snprintf(sp, s + l - sp, "/%d", 32-i); 468 469 } else { 470 (void)snprintf(sp, s + l - sp, " (mask %#x)", 471 (u_int)mask); 472 } 473 } 474 475 return s; 476 #undef NUM_BUFS 477 } 478 479 480 /* display a bit-field 481 */ 482 struct bits { 483 u_int bits_mask; 484 u_int bits_clear; 485 const char *bits_name; 486 }; 487 488 static struct bits if_bits[] = { 489 { IFF_LOOPBACK, 0, "LOOPBACK" }, 490 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 491 { 0, 0, 0} 492 }; 493 494 static struct bits is_bits[] = { 495 { IS_ALIAS, 0, "ALIAS" }, 496 { IS_SUBNET, 0, "" }, 497 { IS_REMOTE, (IS_NO_RDISC 498 | IS_BCAST_RDISC), "REMOTE" }, 499 { IS_PASSIVE, (IS_NO_RDISC 500 | IS_NO_RIP 501 | IS_NO_SUPER_AG 502 | IS_PM_RDISC 503 | IS_NO_AG), "PASSIVE" }, 504 { IS_EXTERNAL, 0, "EXTERNAL" }, 505 { IS_CHECKED, 0, "" }, 506 { IS_ALL_HOSTS, 0, "" }, 507 { IS_ALL_ROUTERS, 0, "" }, 508 { IS_DISTRUST, 0, "DISTRUST" }, 509 { IS_BROKE, IS_SICK, "BROKEN" }, 510 { IS_SICK, 0, "SICK" }, 511 { IS_DUP, 0, "DUPLICATE" }, 512 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 513 { IS_NEED_NET_SYN, 0, "" }, 514 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 515 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 516 { (IS_NO_RIPV1_IN 517 | IS_NO_RIPV2_IN 518 | IS_NO_RIPV1_OUT 519 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 520 { (IS_NO_RIPV1_IN 521 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 522 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 523 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 524 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 525 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 526 { (IS_NO_ADV_IN 527 | IS_NO_SOL_OUT 528 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 529 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 530 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 531 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 532 { IS_ADV_OUT, 0, "RDISC_ADV" }, 533 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 534 { IS_PM_RDISC, 0, "" }, 535 { 0, 0, "%#x"} 536 }; 537 538 static struct bits rs_bits[] = { 539 { RS_IF, 0, "IF" }, 540 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 541 { RS_NET_SYN, 0, "NET_SYN" }, 542 { RS_SUBNET, 0, "" }, 543 { RS_LOCAL, 0, "LOCAL" }, 544 { RS_MHOME, 0, "MHOME" }, 545 { RS_STATIC, 0, "STATIC" }, 546 { RS_RDISC, 0, "RDISC" }, 547 { 0, 0, "%#x"} 548 }; 549 550 551 static void 552 trace_bits(const struct bits *tbl, 553 u_int field, 554 int force) 555 { 556 u_int b; 557 char c; 558 559 if (force) { 560 (void)putc('<', ftrace); 561 c = 0; 562 } else { 563 c = '<'; 564 } 565 566 while (field != 0 567 && (b = tbl->bits_mask) != 0) { 568 if ((b & field) == b) { 569 if (tbl->bits_name[0] != '\0') { 570 if (c) 571 (void)putc(c, ftrace); 572 (void)fprintf(ftrace, "%s", tbl->bits_name); 573 c = '|'; 574 } 575 if (0 == (field &= ~(b | tbl->bits_clear))) 576 break; 577 } 578 tbl++; 579 } 580 if (field != 0 && tbl->bits_name != 0) { 581 if (c) 582 (void)putc(c, ftrace); 583 (void)fprintf(ftrace, tbl->bits_name, field); 584 c = '|'; 585 } 586 587 if (c != '<' || force) 588 (void)fputs("> ", ftrace); 589 } 590 591 592 char * 593 rtname(naddr dst, 594 naddr mask, 595 naddr gate) 596 { 597 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 598 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 599 int i; 600 601 i = snprintf(buf, sizeof(buf), "%-16s-->", addrname(dst, mask, 0)); 602 if (i >= sizeof(buf) || i < 0) 603 return buf; 604 (void)snprintf(&buf[i], sizeof(buf) - i, "%-*s", 15+20-MAX(20, i), 605 naddr_ntoa(gate)); 606 return buf; 607 } 608 609 610 static void 611 print_rts(struct rt_spare *rts, 612 int force_metric, /* -1=suppress, 0=default */ 613 int force_ifp, /* -1=suppress, 0=default */ 614 int force_router, /* -1=suppress, 0=default, 1=display */ 615 int force_tag, /* -1=suppress, 0=default, 1=display */ 616 int force_time) /* 0=suppress, 1=display */ 617 { 618 int i; 619 620 621 if (force_metric >= 0) 622 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 623 if (force_ifp >= 0) 624 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 625 "if?" : rts->rts_ifp->int_name)); 626 if (force_router > 0 627 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 628 (void)fprintf(ftrace, "router=%s ", 629 naddr_ntoa(rts->rts_router)); 630 if (force_time > 0) 631 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 632 if (force_tag > 0 633 || (force_tag == 0 && rts->rts_tag != 0)) 634 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 635 if (rts->rts_de_ag != 0) { 636 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 637 continue; 638 (void)fprintf(ftrace, "de_ag=%d ", i); 639 } 640 641 } 642 643 644 void 645 trace_if(const char *act, 646 struct interface *ifp) 647 { 648 if (!TRACEACTIONS || ftrace == 0) 649 return; 650 651 lastlog(); 652 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 653 (void)fprintf(ftrace, "%-15s-->%-15s ", 654 naddr_ntoa(ifp->int_addr), 655 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 656 ? ifp->int_dstaddr 657 : htonl(ifp->int_net)), 658 ifp->int_mask, 1)); 659 if (ifp->int_metric != 0) 660 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 661 if (ifp->int_adj_inmetric != 0) 662 (void)fprintf(ftrace, "adj_inmetric=%u ", 663 ifp->int_adj_inmetric); 664 if (ifp->int_adj_outmetric != 0) 665 (void)fprintf(ftrace, "adj_outmetric=%u ", 666 ifp->int_adj_outmetric); 667 if (!IS_RIP_OUT_OFF(ifp->int_state) 668 && ifp->int_d_metric != 0) 669 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 670 trace_bits(if_bits, ifp->int_if_flags, 0); 671 trace_bits(is_bits, ifp->int_state, 0); 672 (void)fputc('\n',ftrace); 673 } 674 675 676 void 677 trace_upslot(struct rt_entry *rt, 678 struct rt_spare *rts, 679 struct rt_spare *new) 680 { 681 if (!TRACEACTIONS || ftrace == 0) 682 return; 683 684 if (rts->rts_gate == new->rts_gate 685 && rts->rts_router == new->rts_router 686 && rts->rts_metric == new->rts_metric 687 && rts->rts_tag == new->rts_tag 688 && rts->rts_de_ag == new->rts_de_ag) 689 return; 690 691 lastlog(); 692 if (new->rts_gate == 0) { 693 (void)fprintf(ftrace, "Del #%d %-35s ", 694 (int)(rts - rt->rt_spares), 695 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 696 print_rts(rts, 0,0,0,0, 697 (rts != rt->rt_spares 698 || AGE_RT(rt->rt_state,new->rts_ifp))); 699 700 } else if (rts->rts_gate != RIP_DEFAULT) { 701 (void)fprintf(ftrace, "Chg #%d %-35s ", 702 (int)(rts - rt->rt_spares), 703 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 704 print_rts(rts, 0,0, 705 rts->rts_gate != new->rts_gate, 706 rts->rts_tag != new->rts_tag, 707 rts != rt->rt_spares || AGE_RT(rt->rt_state, 708 rt->rt_ifp)); 709 710 (void)fprintf(ftrace, "\n %19s%-16s ", "", 711 (new->rts_gate != rts->rts_gate 712 ? naddr_ntoa(new->rts_gate) : "")); 713 print_rts(new, 714 -(new->rts_metric == rts->rts_metric), 715 -(new->rts_ifp == rts->rts_ifp), 716 0, 717 rts->rts_tag != new->rts_tag, 718 (new->rts_time != rts->rts_time 719 && (rts != rt->rt_spares 720 || AGE_RT(rt->rt_state, new->rts_ifp)))); 721 722 } else { 723 (void)fprintf(ftrace, "Add #%d %-35s ", 724 (int)(rts - rt->rt_spares), 725 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 726 print_rts(new, 0,0,0,0, 727 (rts != rt->rt_spares 728 || AGE_RT(rt->rt_state,new->rts_ifp))); 729 } 730 (void)fputc('\n',ftrace); 731 } 732 733 734 /* miscellaneous message checked by the caller 735 */ 736 void 737 trace_misc(const char *p, ...) 738 { 739 va_list args; 740 741 if (ftrace == 0) 742 return; 743 744 lastlog(); 745 va_start(args, p); 746 vfprintf(ftrace, p, args); 747 va_end(args); 748 (void)fputc('\n',ftrace); 749 } 750 751 752 /* display a message if tracing actions 753 */ 754 void 755 trace_act(const char *p, ...) 756 { 757 va_list args; 758 759 if (!TRACEACTIONS || ftrace == 0) 760 return; 761 762 lastlog(); 763 va_start(args, p); 764 vfprintf(ftrace, p, args); 765 va_end(args); 766 (void)fputc('\n',ftrace); 767 } 768 769 770 /* display a message if tracing packets 771 */ 772 void 773 trace_pkt(const char *p, ...) 774 { 775 va_list args; 776 777 if (!TRACEPACKETS || ftrace == 0) 778 return; 779 780 lastlog(); 781 va_start(args, p); 782 vfprintf(ftrace, p, args); 783 va_end(args); 784 (void)fputc('\n',ftrace); 785 } 786 787 788 void 789 trace_change(struct rt_entry *rt, 790 u_int state, 791 struct rt_spare *new, 792 const char *label) 793 { 794 if (ftrace == 0) 795 return; 796 797 if (rt->rt_metric == new->rts_metric 798 && rt->rt_gate == new->rts_gate 799 && rt->rt_router == new->rts_router 800 && rt->rt_state == state 801 && rt->rt_tag == new->rts_tag 802 && rt->rt_de_ag == new->rts_de_ag) 803 return; 804 805 lastlog(); 806 (void)fprintf(ftrace, "%s %-35s ", 807 label, 808 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 809 print_rts(rt->rt_spares, 810 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 811 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 812 813 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 814 (int)strlen(label), "", "", 815 (rt->rt_gate != new->rts_gate 816 ? naddr_ntoa(new->rts_gate) : "")); 817 print_rts(new, 818 -(new->rts_metric == rt->rt_metric), 819 -(new->rts_ifp == rt->rt_ifp), 820 0, 821 rt->rt_tag != new->rts_tag, 822 (rt->rt_time != new->rts_time 823 && AGE_RT(rt->rt_state,new->rts_ifp))); 824 if (rt->rt_state != state) 825 trace_bits(rs_bits, state, 1); 826 (void)fputc('\n',ftrace); 827 } 828 829 830 void 831 trace_add_del(const char * action, struct rt_entry *rt) 832 { 833 if (ftrace == 0) 834 return; 835 836 lastlog(); 837 (void)fprintf(ftrace, "%s %-35s ", 838 action, 839 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 840 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 841 trace_bits(rs_bits, rt->rt_state, 0); 842 (void)fputc('\n',ftrace); 843 } 844 845 846 /* ARGSUSED */ 847 static int 848 walk_trace(struct radix_node *rn, 849 struct walkarg *w UNUSED) 850 { 851 #define RT ((struct rt_entry *)rn) 852 struct rt_spare *rts; 853 int i; 854 855 (void)fprintf(ftrace, " %-35s ", 856 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 857 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 858 trace_bits(rs_bits, RT->rt_state, 0); 859 if (RT->rt_poison_time >= now_garbage 860 && RT->rt_poison_metric < RT->rt_metric) 861 (void)fprintf(ftrace, "pm=%d@%s", 862 RT->rt_poison_metric, ts(RT->rt_poison_time)); 863 864 rts = &RT->rt_spares[1]; 865 for (i = 1; i < NUM_SPARES; i++, rts++) { 866 if (rts->rts_gate != RIP_DEFAULT) { 867 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 868 i, "", naddr_ntoa(rts->rts_gate)); 869 print_rts(rts, 0,0,0,0,1); 870 } 871 } 872 (void)fputc('\n',ftrace); 873 874 return 0; 875 } 876 877 878 static void 879 trace_dump(void) 880 { 881 struct interface *ifp; 882 883 if (ftrace == 0) 884 return; 885 lastlog(); 886 887 (void)fputs("current daemon state:\n", ftrace); 888 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 889 trace_if("", ifp); 890 (void)rn_walktree(rhead, walk_trace, 0); 891 } 892 893 894 void 895 trace_rip(const char *dir1, const char *dir2, 896 struct sockaddr_in *who, 897 struct interface *ifp, 898 struct rip *msg, 899 int size) /* total size of message */ 900 { 901 struct netinfo *n, *lim; 902 # define NA ((struct netauth*)n) 903 int i, seen_route; 904 905 if (!TRACEPACKETS || ftrace == 0) 906 return; 907 908 lastlog(); 909 if (msg->rip_cmd >= RIPCMD_MAX 910 || msg->rip_vers == 0) { 911 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 912 " %s.%d size=%d\n", 913 dir1, msg->rip_vers, msg->rip_cmd, dir2, 914 naddr_ntoa(who->sin_addr.s_addr), 915 ntohs(who->sin_port), 916 size); 917 return; 918 } 919 920 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 921 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 922 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 923 ifp ? " via " : "", ifp ? ifp->int_name : ""); 924 if (!TRACECONTENTS) 925 return; 926 927 seen_route = 0; 928 switch (msg->rip_cmd) { 929 case RIPCMD_REQUEST: 930 case RIPCMD_RESPONSE: 931 n = msg->rip_nets; 932 lim = (struct netinfo *)((char*)msg + size); 933 for (; n < lim; n++) { 934 if (!seen_route 935 && n->n_family == RIP_AF_UNSPEC 936 && ntohl(n->n_metric) == HOPCNT_INFINITY 937 && msg->rip_cmd == RIPCMD_REQUEST 938 && (n+1 == lim 939 || (n+2 == lim 940 && (n+1)->n_family == RIP_AF_AUTH))) { 941 (void)fputs("\tQUERY ", ftrace); 942 if (n->n_dst != 0) 943 (void)fprintf(ftrace, "%s ", 944 naddr_ntoa(n->n_dst)); 945 if (n->n_mask != 0) 946 (void)fprintf(ftrace, "mask=%#x ", 947 (u_int)ntohl(n->n_mask)); 948 if (n->n_nhop != 0) 949 (void)fprintf(ftrace, "nhop=%s ", 950 naddr_ntoa(n->n_nhop)); 951 if (n->n_tag != 0) 952 (void)fprintf(ftrace, "tag=%#x ", 953 ntohs(n->n_tag)); 954 (void)fputc('\n',ftrace); 955 continue; 956 } 957 958 if (n->n_family == RIP_AF_AUTH) { 959 if (NA->a_type == RIP_AUTH_PW 960 && n == msg->rip_nets) { 961 (void)fprintf(ftrace, "\tPassword" 962 " Authentication:" 963 " \"%s\"\n", 964 qstring(NA->au.au_pw, 965 RIP_AUTH_PW_LEN)); 966 continue; 967 } 968 969 if (NA->a_type == RIP_AUTH_MD5 970 && n == msg->rip_nets) { 971 (void)fprintf(ftrace, 972 "\tMD5 Auth" 973 " pkt_len=%d KeyID=%u" 974 " auth_len=%d" 975 " seqno=%#x" 976 " rsvd=%#x,%#x\n", 977 ntohs(NA->au.a_md5.md5_pkt_len), 978 NA->au.a_md5.md5_keyid, 979 NA->au.a_md5.md5_auth_len, 980 (int)ntohl(NA->au.a_md5.md5_seqno), 981 (int)ntohs(NA->au.a_md5.rsvd[0]), 982 (int)ntohs(NA->au.a_md5.rsvd[1])); 983 continue; 984 } 985 (void)fprintf(ftrace, 986 "\tAuthentication type %d: ", 987 ntohs(NA->a_type)); 988 for (i = 0; 989 i < (int)sizeof(NA->au.au_pw); 990 i++) 991 (void)fprintf(ftrace, "%02x ", 992 NA->au.au_pw[i]); 993 (void)fputc('\n',ftrace); 994 continue; 995 } 996 997 seen_route = 1; 998 if (n->n_family != RIP_AF_INET) { 999 (void)fprintf(ftrace, 1000 "\t(af %d) %-18s mask=%#x ", 1001 ntohs(n->n_family), 1002 naddr_ntoa(n->n_dst), 1003 (u_int)ntohl(n->n_mask)); 1004 } else if (msg->rip_vers == RIPv1) { 1005 (void)fprintf(ftrace, "\t%-18s ", 1006 addrname(n->n_dst, 1007 ntohl(n->n_mask), 1008 n->n_mask==0 ? 2 : 1)); 1009 } else { 1010 (void)fprintf(ftrace, "\t%-18s ", 1011 addrname(n->n_dst, 1012 ntohl(n->n_mask), 1013 n->n_mask==0 ? 2 : 0)); 1014 } 1015 (void)fprintf(ftrace, "metric=%-2d ", 1016 (u_int)ntohl(n->n_metric)); 1017 if (n->n_nhop != 0) 1018 (void)fprintf(ftrace, " nhop=%s ", 1019 naddr_ntoa(n->n_nhop)); 1020 if (n->n_tag != 0) 1021 (void)fprintf(ftrace, "tag=%#x", 1022 ntohs(n->n_tag)); 1023 (void)fputc('\n',ftrace); 1024 } 1025 if (size != (char *)n - (char *)msg) 1026 (void)fprintf(ftrace, "truncated record, len %d\n", 1027 size); 1028 break; 1029 1030 case RIPCMD_TRACEON: 1031 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1032 msg->rip_tracefile); 1033 break; 1034 1035 case RIPCMD_TRACEOFF: 1036 break; 1037 } 1038 } 1039
Indexes created Mon Sep 22 21:09:42 GMT 2025