trace.c revision 1.28
1 /* $NetBSD: trace.c,v 1.28 2003/04/21 08:54:42 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 1.28 2003/04/21 08:54:42 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 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 strlcpy(bufs[bufno].str, inet_ntoa(addr), sizeof(bufs[bufno].str)); 139 s = bufs[bufno].str; 140 bufno = (bufno+1) % NUM_BUFS; 141 return s; 142 #undef NUM_BUFS 143 } 144 145 146 const char * 147 saddr_ntoa(struct sockaddr *sa) 148 { 149 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 150 } 151 152 153 static char * 154 ts(time_t secs) { 155 static char s[20]; 156 157 secs += epoch.tv_sec; 158 #ifdef sgi 159 (void)cftime(s, "%T", &secs); 160 #else 161 memcpy(s, ctime(&secs)+11, 8); 162 s[8] = '\0'; 163 #endif 164 return s; 165 } 166 167 168 /* On each event, display a time stamp. 169 * This assumes that 'now' is update once for each event, and 170 * that at least now.tv_usec changes. 171 */ 172 static struct timeval lastlog_time; 173 174 void 175 lastlog(void) 176 { 177 if (lastlog_time.tv_sec != now.tv_sec 178 || lastlog_time.tv_usec != now.tv_usec) { 179 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 180 lastlog_time = now; 181 } 182 } 183 184 185 static void 186 tmsg(const char *p, ...) 187 { 188 va_list args; 189 190 if (ftrace != 0) { 191 lastlog(); 192 va_start(args, p); 193 vfprintf(ftrace, p, args); 194 va_end(args); 195 (void)fputc('\n',ftrace); 196 fflush(ftrace); 197 } 198 } 199 200 201 void 202 trace_close(int zap_stdio) 203 { 204 int fd; 205 206 207 fflush(stdout); 208 fflush(stderr); 209 210 if (ftrace != 0 && zap_stdio) { 211 if (ftrace != stdout) 212 fclose(ftrace); 213 ftrace = 0; 214 fd = open(_PATH_DEVNULL, O_RDWR); 215 if (isatty(STDIN_FILENO)) 216 (void)dup2(fd, STDIN_FILENO); 217 if (isatty(STDOUT_FILENO)) 218 (void)dup2(fd, STDOUT_FILENO); 219 if (isatty(STDERR_FILENO)) 220 (void)dup2(fd, STDERR_FILENO); 221 (void)close(fd); 222 } 223 lastlog_time.tv_sec = 0; 224 } 225 226 227 void 228 trace_flush(void) 229 { 230 if (ftrace != 0) { 231 fflush(ftrace); 232 if (ferror(ftrace)) 233 trace_off("tracing off: %s", strerror(ferror(ftrace))); 234 } 235 } 236 237 238 void 239 trace_off(const char *p, ...) 240 { 241 va_list args; 242 243 244 if (ftrace != 0) { 245 lastlog(); 246 va_start(args, p); 247 vfprintf(ftrace, p, args); 248 va_end(args); 249 (void)fputc('\n',ftrace); 250 } 251 trace_close(file_trace); 252 253 new_tracelevel = tracelevel = 0; 254 } 255 256 257 /* log a change in tracing 258 */ 259 void 260 tracelevel_msg(const char *pat, 261 int dump) /* -1=no dump, 0=default, 1=force */ 262 { 263 static const char *off_msgs[MAX_TRACELEVEL] = { 264 "Tracing actions stopped", 265 "Tracing packets stopped", 266 "Tracing packet contents stopped", 267 "Tracing kernel changes stopped", 268 }; 269 static const char *on_msgs[MAX_TRACELEVEL] = { 270 "Tracing actions started", 271 "Tracing packets started", 272 "Tracing packet contents started", 273 "Tracing kernel changes started", 274 }; 275 u_int old_tracelevel = tracelevel; 276 277 278 if (new_tracelevel < 0) 279 new_tracelevel = 0; 280 else if (new_tracelevel > MAX_TRACELEVEL) 281 new_tracelevel = MAX_TRACELEVEL; 282 283 if (new_tracelevel < tracelevel) { 284 if (new_tracelevel <= 0) { 285 trace_off(pat, off_msgs[0]); 286 } else do { 287 tmsg(pat, off_msgs[tracelevel]); 288 } 289 while (--tracelevel != new_tracelevel); 290 291 } else if (new_tracelevel > tracelevel) { 292 do { 293 tmsg(pat, on_msgs[tracelevel++]); 294 } while (tracelevel != new_tracelevel); 295 } 296 297 if (dump > 0 298 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 299 trace_dump(); 300 } 301 302 303 void 304 set_tracefile(const char *filename, 305 const char *pat, 306 int dump) /* -1=no dump, 0=default, 1=force */ 307 { 308 struct stat stbuf; 309 FILE *n_ftrace; 310 const char *fn; 311 312 313 /* Allow a null filename to increase the level if the trace file 314 * is already open or if coming from a trusted source, such as 315 * a signal or the command line. 316 */ 317 if (filename == 0 || filename[0] == '\0') { 318 filename = 0; 319 if (ftrace == 0) { 320 if (inittracename[0] == '\0') { 321 msglog("missing trace file name"); 322 return; 323 } 324 fn = inittracename; 325 } else { 326 fn = 0; 327 } 328 329 } else if (!strcmp(filename,"dump/../table")) { 330 trace_dump(); 331 return; 332 333 } else { 334 /* Allow the file specified with "-T file" to be reopened, 335 * but require all other names specified over the net to 336 * match the official path. The path can specify a directory 337 * in which the file is to be created. 338 */ 339 if (strcmp(filename, inittracename) 340 #ifdef _PATH_TRACE 341 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 342 || strstr(filename,"../") 343 || 0 > stat(_PATH_TRACE, &stbuf)) 344 #endif 345 ) { 346 msglog("wrong trace file \"%s\"", filename); 347 return; 348 } 349 350 /* If the new tracefile exists, it must be a regular file. 351 */ 352 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 353 msglog("wrong type (%#x) of trace file \"%s\"", 354 stbuf.st_mode, filename); 355 return; 356 } 357 358 fn = filename; 359 } 360 361 if (fn != 0) { 362 n_ftrace = fopen(fn, "a"); 363 if (n_ftrace == 0) { 364 msglog("failed to open trace file \"%s\" %s", 365 fn, strerror(errno)); 366 if (fn == inittracename) 367 inittracename[0] = '\0'; 368 return; 369 } 370 371 tmsg("switch to trace file %s", fn); 372 373 trace_close(file_trace = 1); 374 375 if (fn != savetracename) 376 strlcpy(savetracename, fn, sizeof(savetracename)); 377 ftrace = n_ftrace; 378 379 fflush(stdout); 380 fflush(stderr); 381 dup2(fileno(ftrace), STDOUT_FILENO); 382 dup2(fileno(ftrace), STDERR_FILENO); 383 } 384 385 if (new_tracelevel == 0 || filename == 0) 386 new_tracelevel++; 387 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 388 } 389 390 391 /* ARGSUSED */ 392 void 393 sigtrace_on(int s UNUSED) 394 { 395 new_tracelevel++; 396 sigtrace_pat = "SIGUSR1: %s"; 397 } 398 399 400 /* ARGSUSED */ 401 void 402 sigtrace_off(int s UNUSED) 403 { 404 new_tracelevel--; 405 sigtrace_pat = "SIGUSR2: %s"; 406 } 407 408 409 /* Set tracing after a signal. 410 */ 411 void 412 set_tracelevel(void) 413 { 414 if (new_tracelevel == tracelevel) 415 return; 416 417 /* If tracing entirely off, and there was no tracefile specified 418 * on the command line, then leave it off. 419 */ 420 if (new_tracelevel > tracelevel && ftrace == 0) { 421 if (savetracename[0] != '\0') { 422 set_tracefile(savetracename,sigtrace_pat,0); 423 } else if (inittracename[0] != '\0') { 424 set_tracefile(inittracename,sigtrace_pat,0); 425 } else { 426 new_tracelevel = 0; 427 return; 428 } 429 } else { 430 tracelevel_msg(sigtrace_pat, 0); 431 } 432 } 433 434 435 /* display an address 436 */ 437 char * 438 addrname(naddr addr, /* in network byte order */ 439 naddr mask, 440 int force) /* 0=show mask if nonstandard, */ 441 { /* 1=always show mask, 2=never */ 442 #define NUM_BUFS 4 443 static int bufno; 444 static struct { 445 char str[15+20]; 446 } bufs[NUM_BUFS]; 447 char *s, *sp; 448 naddr dmask; 449 size_t l; 450 int i; 451 452 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str)); 453 s = bufs[bufno].str; 454 l = sizeof(bufs[bufno].str); 455 bufno = (bufno+1) % NUM_BUFS; 456 457 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 458 sp = &s[strlen(s)]; 459 460 dmask = mask & -mask; 461 if (mask + dmask == 0) { 462 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 463 continue; 464 (void)snprintf(sp, s + l - sp, "/%d", 32-i); 465 466 } else { 467 (void)snprintf(sp, s + l - sp, " (mask %#x)", 468 (u_int)mask); 469 } 470 } 471 472 return s; 473 #undef NUM_BUFS 474 } 475 476 477 /* display a bit-field 478 */ 479 struct bits { 480 u_int bits_mask; 481 u_int bits_clear; 482 const char *bits_name; 483 }; 484 485 static struct bits if_bits[] = { 486 { IFF_LOOPBACK, 0, "LOOPBACK" }, 487 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 488 { 0, 0, 0} 489 }; 490 491 static struct bits is_bits[] = { 492 { IS_ALIAS, 0, "ALIAS" }, 493 { IS_SUBNET, 0, "" }, 494 { IS_REMOTE, (IS_NO_RDISC 495 | IS_BCAST_RDISC), "REMOTE" }, 496 { IS_PASSIVE, (IS_NO_RDISC 497 | IS_NO_RIP 498 | IS_NO_SUPER_AG 499 | IS_PM_RDISC 500 | IS_NO_AG), "PASSIVE" }, 501 { IS_EXTERNAL, 0, "EXTERNAL" }, 502 { IS_CHECKED, 0, "" }, 503 { IS_ALL_HOSTS, 0, "" }, 504 { IS_ALL_ROUTERS, 0, "" }, 505 { IS_DISTRUST, 0, "DISTRUST" }, 506 { IS_BROKE, IS_SICK, "BROKEN" }, 507 { IS_SICK, 0, "SICK" }, 508 { IS_DUP, 0, "DUPLICATE" }, 509 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 510 { IS_NEED_NET_SYN, 0, "" }, 511 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 512 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 513 { (IS_NO_RIPV1_IN 514 | IS_NO_RIPV2_IN 515 | IS_NO_RIPV1_OUT 516 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 517 { (IS_NO_RIPV1_IN 518 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 519 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 520 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 521 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 522 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 523 { (IS_NO_ADV_IN 524 | IS_NO_SOL_OUT 525 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 526 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 527 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 528 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 529 { IS_ADV_OUT, 0, "RDISC_ADV" }, 530 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 531 { IS_PM_RDISC, 0, "" }, 532 { 0, 0, "%#x"} 533 }; 534 535 static struct bits rs_bits[] = { 536 { RS_IF, 0, "IF" }, 537 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 538 { RS_NET_SYN, 0, "NET_SYN" }, 539 { RS_SUBNET, 0, "" }, 540 { RS_LOCAL, 0, "LOCAL" }, 541 { RS_MHOME, 0, "MHOME" }, 542 { RS_STATIC, 0, "STATIC" }, 543 { RS_RDISC, 0, "RDISC" }, 544 { 0, 0, "%#x"} 545 }; 546 547 548 static void 549 trace_bits(const struct bits *tbl, 550 u_int field, 551 int force) 552 { 553 u_int b; 554 char c; 555 556 if (force) { 557 (void)putc('<', ftrace); 558 c = 0; 559 } else { 560 c = '<'; 561 } 562 563 while (field != 0 564 && (b = tbl->bits_mask) != 0) { 565 if ((b & field) == b) { 566 if (tbl->bits_name[0] != '\0') { 567 if (c) 568 (void)putc(c, ftrace); 569 (void)fprintf(ftrace, "%s", tbl->bits_name); 570 c = '|'; 571 } 572 if (0 == (field &= ~(b | tbl->bits_clear))) 573 break; 574 } 575 tbl++; 576 } 577 if (field != 0 && tbl->bits_name != 0) { 578 if (c) 579 (void)putc(c, ftrace); 580 (void)fprintf(ftrace, tbl->bits_name, field); 581 c = '|'; 582 } 583 584 if (c != '<' || force) 585 (void)fputs("> ", ftrace); 586 } 587 588 589 char * 590 rtname(naddr dst, 591 naddr mask, 592 naddr gate) 593 { 594 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 595 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 596 int i; 597 598 i = snprintf(buf, sizeof(buf), "%-16s-->", addrname(dst, mask, 0)); 599 if (i >= sizeof(buf) || i < 0) 600 return buf; 601 (void)snprintf(&buf[i], sizeof(buf) - i, "%-*s", 15+20-MAX(20, i), 602 naddr_ntoa(gate)); 603 return buf; 604 } 605 606 607 static void 608 print_rts(struct rt_spare *rts, 609 int force_metric, /* -1=suppress, 0=default */ 610 int force_ifp, /* -1=suppress, 0=default */ 611 int force_router, /* -1=suppress, 0=default, 1=display */ 612 int force_tag, /* -1=suppress, 0=default, 1=display */ 613 int force_time) /* 0=suppress, 1=display */ 614 { 615 int i; 616 617 618 if (force_metric >= 0) 619 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 620 if (force_ifp >= 0) 621 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 622 "if?" : rts->rts_ifp->int_name)); 623 if (force_router > 0 624 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 625 (void)fprintf(ftrace, "router=%s ", 626 naddr_ntoa(rts->rts_router)); 627 if (force_time > 0) 628 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 629 if (force_tag > 0 630 || (force_tag == 0 && rts->rts_tag != 0)) 631 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 632 if (rts->rts_de_ag != 0) { 633 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 634 continue; 635 (void)fprintf(ftrace, "de_ag=%d ", i); 636 } 637 638 } 639 640 641 void 642 trace_if(const char *act, 643 struct interface *ifp) 644 { 645 if (!TRACEACTIONS || ftrace == 0) 646 return; 647 648 lastlog(); 649 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 650 (void)fprintf(ftrace, "%-15s-->%-15s ", 651 naddr_ntoa(ifp->int_addr), 652 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 653 ? ifp->int_dstaddr 654 : htonl(ifp->int_net)), 655 ifp->int_mask, 1)); 656 if (ifp->int_metric != 0) 657 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 658 if (ifp->int_adj_inmetric != 0) 659 (void)fprintf(ftrace, "adj_inmetric=%u ", 660 ifp->int_adj_inmetric); 661 if (ifp->int_adj_outmetric != 0) 662 (void)fprintf(ftrace, "adj_outmetric=%u ", 663 ifp->int_adj_outmetric); 664 if (!IS_RIP_OUT_OFF(ifp->int_state) 665 && ifp->int_d_metric != 0) 666 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 667 trace_bits(if_bits, ifp->int_if_flags, 0); 668 trace_bits(is_bits, ifp->int_state, 0); 669 (void)fputc('\n',ftrace); 670 } 671 672 673 void 674 trace_upslot(struct rt_entry *rt, 675 struct rt_spare *rts, 676 struct rt_spare *new) 677 { 678 if (!TRACEACTIONS || ftrace == 0) 679 return; 680 681 if (rts->rts_gate == new->rts_gate 682 && rts->rts_router == new->rts_router 683 && rts->rts_metric == new->rts_metric 684 && rts->rts_tag == new->rts_tag 685 && rts->rts_de_ag == new->rts_de_ag) 686 return; 687 688 lastlog(); 689 if (new->rts_gate == 0) { 690 (void)fprintf(ftrace, "Del #%d %-35s ", 691 (int)(rts - rt->rt_spares), 692 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 693 print_rts(rts, 0,0,0,0, 694 (rts != rt->rt_spares 695 || AGE_RT(rt->rt_state,new->rts_ifp))); 696 697 } else if (rts->rts_gate != RIP_DEFAULT) { 698 (void)fprintf(ftrace, "Chg #%d %-35s ", 699 (int)(rts - rt->rt_spares), 700 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 701 print_rts(rts, 0,0, 702 rts->rts_gate != new->rts_gate, 703 rts->rts_tag != new->rts_tag, 704 rts != rt->rt_spares || AGE_RT(rt->rt_state, 705 rt->rt_ifp)); 706 707 (void)fprintf(ftrace, "\n %19s%-16s ", "", 708 (new->rts_gate != rts->rts_gate 709 ? naddr_ntoa(new->rts_gate) : "")); 710 print_rts(new, 711 -(new->rts_metric == rts->rts_metric), 712 -(new->rts_ifp == rts->rts_ifp), 713 0, 714 rts->rts_tag != new->rts_tag, 715 (new->rts_time != rts->rts_time 716 && (rts != rt->rt_spares 717 || AGE_RT(rt->rt_state, new->rts_ifp)))); 718 719 } else { 720 (void)fprintf(ftrace, "Add #%d %-35s ", 721 (int)(rts - rt->rt_spares), 722 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 723 print_rts(new, 0,0,0,0, 724 (rts != rt->rt_spares 725 || AGE_RT(rt->rt_state,new->rts_ifp))); 726 } 727 (void)fputc('\n',ftrace); 728 } 729 730 731 /* miscellaneous message checked by the caller 732 */ 733 void 734 trace_misc(const char *p, ...) 735 { 736 va_list args; 737 738 if (ftrace == 0) 739 return; 740 741 lastlog(); 742 va_start(args, p); 743 vfprintf(ftrace, p, args); 744 va_end(args); 745 (void)fputc('\n',ftrace); 746 } 747 748 749 /* display a message if tracing actions 750 */ 751 void 752 trace_act(const char *p, ...) 753 { 754 va_list args; 755 756 if (!TRACEACTIONS || ftrace == 0) 757 return; 758 759 lastlog(); 760 va_start(args, p); 761 vfprintf(ftrace, p, args); 762 va_end(args); 763 (void)fputc('\n',ftrace); 764 } 765 766 767 /* display a message if tracing packets 768 */ 769 void 770 trace_pkt(const char *p, ...) 771 { 772 va_list args; 773 774 if (!TRACEPACKETS || ftrace == 0) 775 return; 776 777 lastlog(); 778 va_start(args, p); 779 vfprintf(ftrace, p, args); 780 va_end(args); 781 (void)fputc('\n',ftrace); 782 } 783 784 785 void 786 trace_change(struct rt_entry *rt, 787 u_int state, 788 struct rt_spare *new, 789 const char *label) 790 { 791 if (ftrace == 0) 792 return; 793 794 if (rt->rt_metric == new->rts_metric 795 && rt->rt_gate == new->rts_gate 796 && rt->rt_router == new->rts_router 797 && rt->rt_state == state 798 && rt->rt_tag == new->rts_tag 799 && rt->rt_de_ag == new->rts_de_ag) 800 return; 801 802 lastlog(); 803 (void)fprintf(ftrace, "%s %-35s ", 804 label, 805 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 806 print_rts(rt->rt_spares, 807 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 808 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 809 810 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 811 (int)strlen(label), "", "", 812 (rt->rt_gate != new->rts_gate 813 ? naddr_ntoa(new->rts_gate) : "")); 814 print_rts(new, 815 -(new->rts_metric == rt->rt_metric), 816 -(new->rts_ifp == rt->rt_ifp), 817 0, 818 rt->rt_tag != new->rts_tag, 819 (rt->rt_time != new->rts_time 820 && AGE_RT(rt->rt_state,new->rts_ifp))); 821 if (rt->rt_state != state) 822 trace_bits(rs_bits, state, 1); 823 (void)fputc('\n',ftrace); 824 } 825 826 827 void 828 trace_add_del(const char * action, struct rt_entry *rt) 829 { 830 if (ftrace == 0) 831 return; 832 833 lastlog(); 834 (void)fprintf(ftrace, "%s %-35s ", 835 action, 836 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 837 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 838 trace_bits(rs_bits, rt->rt_state, 0); 839 (void)fputc('\n',ftrace); 840 } 841 842 843 /* ARGSUSED */ 844 static int 845 walk_trace(struct radix_node *rn, 846 struct walkarg *w UNUSED) 847 { 848 #define RT ((struct rt_entry *)rn) 849 struct rt_spare *rts; 850 int i; 851 852 (void)fprintf(ftrace, " %-35s ", 853 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 854 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 855 trace_bits(rs_bits, RT->rt_state, 0); 856 if (RT->rt_poison_time >= now_garbage 857 && RT->rt_poison_metric < RT->rt_metric) 858 (void)fprintf(ftrace, "pm=%d@%s", 859 RT->rt_poison_metric, ts(RT->rt_poison_time)); 860 861 rts = &RT->rt_spares[1]; 862 for (i = 1; i < NUM_SPARES; i++, rts++) { 863 if (rts->rts_gate != RIP_DEFAULT) { 864 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 865 i, "", naddr_ntoa(rts->rts_gate)); 866 print_rts(rts, 0,0,0,0,1); 867 } 868 } 869 (void)fputc('\n',ftrace); 870 871 return 0; 872 } 873 874 875 static void 876 trace_dump(void) 877 { 878 struct interface *ifp; 879 880 if (ftrace == 0) 881 return; 882 lastlog(); 883 884 (void)fputs("current daemon state:\n", ftrace); 885 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 886 trace_if("", ifp); 887 (void)rn_walktree(rhead, walk_trace, 0); 888 } 889 890 891 void 892 trace_rip(const char *dir1, const char *dir2, 893 struct sockaddr_in *who, 894 struct interface *ifp, 895 struct rip *msg, 896 int size) /* total size of message */ 897 { 898 struct netinfo *n, *lim; 899 # define NA ((struct netauth*)n) 900 int i, seen_route; 901 902 if (!TRACEPACKETS || ftrace == 0) 903 return; 904 905 lastlog(); 906 if (msg->rip_cmd >= RIPCMD_MAX 907 || msg->rip_vers == 0) { 908 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 909 " %s.%d size=%d\n", 910 dir1, msg->rip_vers, msg->rip_cmd, dir2, 911 naddr_ntoa(who->sin_addr.s_addr), 912 ntohs(who->sin_port), 913 size); 914 return; 915 } 916 917 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 918 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 919 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 920 ifp ? " via " : "", ifp ? ifp->int_name : ""); 921 if (!TRACECONTENTS) 922 return; 923 924 seen_route = 0; 925 switch (msg->rip_cmd) { 926 case RIPCMD_REQUEST: 927 case RIPCMD_RESPONSE: 928 n = msg->rip_nets; 929 lim = (struct netinfo *)((char*)msg + size); 930 for (; n < lim; n++) { 931 if (!seen_route 932 && n->n_family == RIP_AF_UNSPEC 933 && ntohl(n->n_metric) == HOPCNT_INFINITY 934 && msg->rip_cmd == RIPCMD_REQUEST 935 && (n+1 == lim 936 || (n+2 == lim 937 && (n+1)->n_family == RIP_AF_AUTH))) { 938 (void)fputs("\tQUERY ", ftrace); 939 if (n->n_dst != 0) 940 (void)fprintf(ftrace, "%s ", 941 naddr_ntoa(n->n_dst)); 942 if (n->n_mask != 0) 943 (void)fprintf(ftrace, "mask=%#x ", 944 (u_int)ntohl(n->n_mask)); 945 if (n->n_nhop != 0) 946 (void)fprintf(ftrace, "nhop=%s ", 947 naddr_ntoa(n->n_nhop)); 948 if (n->n_tag != 0) 949 (void)fprintf(ftrace, "tag=%#x ", 950 ntohs(n->n_tag)); 951 (void)fputc('\n',ftrace); 952 continue; 953 } 954 955 if (n->n_family == RIP_AF_AUTH) { 956 if (NA->a_type == RIP_AUTH_PW 957 && n == msg->rip_nets) { 958 (void)fprintf(ftrace, "\tPassword" 959 " Authentication:" 960 " \"%s\"\n", 961 qstring(NA->au.au_pw, 962 RIP_AUTH_PW_LEN)); 963 continue; 964 } 965 966 if (NA->a_type == RIP_AUTH_MD5 967 && n == msg->rip_nets) { 968 (void)fprintf(ftrace, 969 "\tMD5 Auth" 970 " pkt_len=%d KeyID=%u" 971 " auth_len=%d" 972 " seqno=%#x" 973 " rsvd=%#x,%#x\n", 974 ntohs(NA->au.a_md5.md5_pkt_len), 975 NA->au.a_md5.md5_keyid, 976 NA->au.a_md5.md5_auth_len, 977 (int)ntohl(NA->au.a_md5.md5_seqno), 978 (int)ntohs(NA->au.a_md5.rsvd[0]), 979 (int)ntohs(NA->au.a_md5.rsvd[1])); 980 continue; 981 } 982 (void)fprintf(ftrace, 983 "\tAuthentication type %d: ", 984 ntohs(NA->a_type)); 985 for (i = 0; 986 i < (int)sizeof(NA->au.au_pw); 987 i++) 988 (void)fprintf(ftrace, "%02x ", 989 NA->au.au_pw[i]); 990 (void)fputc('\n',ftrace); 991 continue; 992 } 993 994 seen_route = 1; 995 if (n->n_family != RIP_AF_INET) { 996 (void)fprintf(ftrace, 997 "\t(af %d) %-18s mask=%#x ", 998 ntohs(n->n_family), 999 naddr_ntoa(n->n_dst), 1000 (u_int)ntohl(n->n_mask)); 1001 } else if (msg->rip_vers == RIPv1) { 1002 (void)fprintf(ftrace, "\t%-18s ", 1003 addrname(n->n_dst, 1004 ntohl(n->n_mask), 1005 n->n_mask==0 ? 2 : 1)); 1006 } else { 1007 (void)fprintf(ftrace, "\t%-18s ", 1008 addrname(n->n_dst, 1009 ntohl(n->n_mask), 1010 n->n_mask==0 ? 2 : 0)); 1011 } 1012 (void)fprintf(ftrace, "metric=%-2d ", 1013 (u_int)ntohl(n->n_metric)); 1014 if (n->n_nhop != 0) 1015 (void)fprintf(ftrace, " nhop=%s ", 1016 naddr_ntoa(n->n_nhop)); 1017 if (n->n_tag != 0) 1018 (void)fprintf(ftrace, "tag=%#x", 1019 ntohs(n->n_tag)); 1020 (void)fputc('\n',ftrace); 1021 } 1022 if (size != (char *)n - (char *)msg) 1023 (void)fprintf(ftrace, "truncated record, len %d\n", 1024 size); 1025 break; 1026 1027 case RIPCMD_TRACEON: 1028 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1029 msg->rip_tracefile); 1030 break; 1031 1032 case RIPCMD_TRACEOFF: 1033 break; 1034 } 1035 } 1036
Indexes created Fri Sep 26 08:10:20 GMT 2025