1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #define RIPCMDS 33 #include "defs.h" 34 #include "pathnames.h" 35 #include <sys/stat.h> 36 #include <sys/signal.h> 37 #include <fcntl.h> 38 39 #ifdef __NetBSD__ 40 __RCSID("$NetBSD$"); 41 #elif defined(__FreeBSD__) 42 __RCSID("$FreeBSD$"); 43 #else 44 __RCSID("$Revision: 2.27 $"); 45 #ident "$Revision: 2.27 $" 46 #endif 47 48 49 #ifdef sgi 50 /* use *stat64 for files on large file systems */ 51 #define stat stat64 52 #endif 53 54 #define NRECORDS 50 /* size of circular trace buffer */ 55 56 int tracelevel, new_tracelevel; 57 FILE *ftrace; /* output trace file */ 58 static const char *sigtrace_pat = "%s"; 59 static char savetracename[PATH_MAX]; 60 char inittracename[PATH_MAX]; 61 int file_trace; /* 1=tracing to file, not stdout */ 62 63 static void trace_dump(void); 64 static void tmsg(const char *, ...) PATTRIB(1,2); 65 66 67 /* convert string to printable characters 68 */ 69 static char * 70 qstring(u_char *s, int len) 71 { 72 static char buf[8*20+1]; 73 char *p; 74 u_char *s2, c; 75 76 77 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 78 c = *s++; 79 if (c == '\0') { 80 for (s2 = s+1; s2 < &s[len]; s2++) { 81 if (*s2 != '\0') 82 break; 83 } 84 if (s2 >= &s[len]) 85 goto exit; 86 } 87 88 if (c >= ' ' && c < 0x7f && c != '\\') { 89 *p++ = c; 90 continue; 91 } 92 *p++ = '\\'; 93 switch (c) { 94 case '\\': 95 *p++ = '\\'; 96 break; 97 case '\n': 98 *p++= 'n'; 99 break; 100 case '\r': 101 *p++= 'r'; 102 break; 103 case '\t': 104 *p++ = 't'; 105 break; 106 case '\b': 107 *p++ = 'b'; 108 break; 109 default: 110 p += sprintf(p,"%o",c); 111 break; 112 } 113 } 114 exit: 115 *p = '\0'; 116 return buf; 117 } 118 119 120 /* convert IP address to a string, but not into a single buffer 121 */ 122 char * 123 naddr_ntoa(naddr a) 124 { 125 #define NUM_BUFS 4 126 static int bufno; 127 static struct { 128 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 129 } bufs[NUM_BUFS]; 130 char *s; 131 struct in_addr addr; 132 133 addr.s_addr = a; 134 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 135 bufno = (bufno+1) % NUM_BUFS; 136 return s; 137 #undef NUM_BUFS 138 } 139 140 141 const char * 142 saddr_ntoa(struct sockaddr *sa) 143 { 144 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 145 } 146 147 148 static char * 149 ts(time_t secs) { 150 static char s[20]; 151 152 secs += epoch.tv_sec; 153 #ifdef sgi 154 (void)cftime(s, "%T", &secs); 155 #else 156 memcpy(s, ctime(&secs)+11, 8); 157 s[8] = '\0'; 158 #endif 159 return s; 160 } 161 162 163 /* On each event, display a time stamp. 164 * This assumes that 'now' is update once for each event, and 165 * that at least now.tv_usec changes. 166 */ 167 static struct timeval lastlog_time; 168 169 void 170 lastlog(void) 171 { 172 if (lastlog_time.tv_sec != now.tv_sec 173 || lastlog_time.tv_usec != now.tv_usec) { 174 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 175 lastlog_time = now; 176 } 177 } 178 179 180 static void 181 tmsg(const char *p, ...) 182 { 183 va_list args; 184 185 if (ftrace != 0) { 186 lastlog(); 187 va_start(args, p); 188 vfprintf(ftrace, p, args); 189 va_end(args); 190 (void)fputc('\n',ftrace); 191 fflush(ftrace); 192 } 193 } 194 195 196 void 197 trace_close(int zap_stdio) 198 { 199 int fd; 200 201 202 fflush(stdout); 203 fflush(stderr); 204 205 if (ftrace != 0 && zap_stdio) { 206 if (ftrace != stdout) 207 fclose(ftrace); 208 ftrace = 0; 209 fd = open(_PATH_DEVNULL, O_RDWR); 210 if (isatty(STDIN_FILENO)) 211 (void)dup2(fd, STDIN_FILENO); 212 if (isatty(STDOUT_FILENO)) 213 (void)dup2(fd, STDOUT_FILENO); 214 if (isatty(STDERR_FILENO)) 215 (void)dup2(fd, STDERR_FILENO); 216 (void)close(fd); 217 } 218 lastlog_time.tv_sec = 0; 219 } 220 221 222 void 223 trace_flush(void) 224 { 225 if (ftrace != 0) { 226 fflush(ftrace); 227 if (ferror(ftrace)) 228 trace_off("tracing off: %s", strerror(ferror(ftrace))); 229 } 230 } 231 232 233 void 234 trace_off(const char *p, ...) 235 { 236 va_list args; 237 238 239 if (ftrace != 0) { 240 lastlog(); 241 va_start(args, p); 242 vfprintf(ftrace, p, args); 243 va_end(args); 244 (void)fputc('\n',ftrace); 245 } 246 trace_close(file_trace); 247 248 new_tracelevel = tracelevel = 0; 249 } 250 251 252 /* log a change in tracing 253 */ 254 void 255 tracelevel_msg(const char *pat, 256 int dump) /* -1=no dump, 0=default, 1=force */ 257 { 258 static const char *off_msgs[MAX_TRACELEVEL] = { 259 "Tracing actions stopped", 260 "Tracing packets stopped", 261 "Tracing packet contents stopped", 262 "Tracing kernel changes stopped", 263 }; 264 static const char *on_msgs[MAX_TRACELEVEL] = { 265 "Tracing actions started", 266 "Tracing packets started", 267 "Tracing packet contents started", 268 "Tracing kernel changes started", 269 }; 270 u_int old_tracelevel = tracelevel; 271 272 273 if (new_tracelevel < 0) 274 new_tracelevel = 0; 275 else if (new_tracelevel > MAX_TRACELEVEL) 276 new_tracelevel = MAX_TRACELEVEL; 277 278 if (new_tracelevel < tracelevel) { 279 if (new_tracelevel <= 0) { 280 trace_off(pat, off_msgs[0]); 281 } else do { 282 tmsg(pat, off_msgs[tracelevel]); 283 } 284 while (--tracelevel != new_tracelevel); 285 286 } else if (new_tracelevel > tracelevel) { 287 do { 288 tmsg(pat, on_msgs[tracelevel++]); 289 } while (tracelevel != new_tracelevel); 290 } 291 292 if (dump > 0 293 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 294 trace_dump(); 295 } 296 297 298 void 299 set_tracefile(const char *filename, 300 const char *pat, 301 int dump) /* -1=no dump, 0=default, 1=force */ 302 { 303 struct stat stbuf; 304 FILE *n_ftrace; 305 const char *fn; 306 307 308 /* Allow a null filename to increase the level if the trace file 309 * is already open or if coming from a trusted source, such as 310 * a signal or the command line. 311 */ 312 if (filename == 0 || filename[0] == '\0') { 313 filename = 0; 314 if (ftrace == 0) { 315 if (inittracename[0] == '\0') { 316 msglog("missing trace file name"); 317 return; 318 } 319 fn = inittracename; 320 } else { 321 fn = 0; 322 } 323 324 } else if (!strcmp(filename,"dump/../table")) { 325 trace_dump(); 326 return; 327 328 } else { 329 /* Allow the file specified with "-T file" to be reopened, 330 * but require all other names specified over the net to 331 * match the official path. The path can specify a directory 332 * in which the file is to be created. 333 */ 334 if (strcmp(filename, inittracename) 335 #ifdef _PATH_TRACE 336 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 337 || strstr(filename,"../") 338 || 0 > stat(_PATH_TRACE, &stbuf)) 339 #endif 340 ) { 341 msglog("wrong trace file \"%s\"", filename); 342 return; 343 } 344 345 /* If the new tracefile exists, it must be a regular file. 346 */ 347 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 348 msglog("wrong type (%#x) of trace file \"%s\"", 349 stbuf.st_mode, filename); 350 return; 351 } 352 353 fn = filename; 354 } 355 356 if (fn != 0) { 357 n_ftrace = fopen(fn, "a"); 358 if (n_ftrace == 0) { 359 msglog("failed to open trace file \"%s\" %s", 360 fn, strerror(errno)); 361 if (fn == inittracename) 362 inittracename[0] = '\0'; 363 return; 364 } 365 366 tmsg("switch to trace file %s", fn); 367 368 trace_close(file_trace = 1); 369 370 if (fn != savetracename) 371 strncpy(savetracename, fn, sizeof(savetracename)-1); 372 ftrace = n_ftrace; 373 374 fflush(stdout); 375 fflush(stderr); 376 dup2(fileno(ftrace), STDOUT_FILENO); 377 dup2(fileno(ftrace), STDERR_FILENO); 378 } 379 380 if (new_tracelevel == 0 || filename == 0) 381 new_tracelevel++; 382 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 383 } 384 385 386 /* ARGSUSED */ 387 void 388 sigtrace_on(int s UNUSED) 389 { 390 new_tracelevel++; 391 sigtrace_pat = "SIGUSR1: %s"; 392 } 393 394 395 /* ARGSUSED */ 396 void 397 sigtrace_off(int s UNUSED) 398 { 399 new_tracelevel--; 400 sigtrace_pat = "SIGUSR2: %s"; 401 } 402 403 404 /* Set tracing after a signal. 405 */ 406 void 407 set_tracelevel(void) 408 { 409 if (new_tracelevel == tracelevel) 410 return; 411 412 /* If tracing entirely off, and there was no tracefile specified 413 * on the command line, then leave it off. 414 */ 415 if (new_tracelevel > tracelevel && ftrace == 0) { 416 if (savetracename[0] != '\0') { 417 set_tracefile(savetracename,sigtrace_pat,0); 418 } else if (inittracename[0] != '\0') { 419 set_tracefile(inittracename,sigtrace_pat,0); 420 } else { 421 new_tracelevel = 0; 422 return; 423 } 424 } else { 425 tracelevel_msg(sigtrace_pat, 0); 426 } 427 } 428 429 430 /* display an address 431 */ 432 char * 433 addrname(naddr addr, /* in network byte order */ 434 naddr mask, 435 int force) /* 0=show mask if nonstandard, */ 436 { /* 1=always show mask, 2=never */ 437 #define NUM_BUFS 4 438 static int bufno; 439 static struct { 440 char str[15+20]; 441 } bufs[NUM_BUFS]; 442 char *s, *sp; 443 naddr dmask; 444 int i; 445 446 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 447 bufno = (bufno+1) % NUM_BUFS; 448 449 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 450 sp = &s[strlen(s)]; 451 452 dmask = mask & -mask; 453 if (mask + dmask == 0) { 454 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 455 continue; 456 (void)sprintf(sp, "/%d", 32-i); 457 458 } else { 459 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 460 } 461 } 462 463 return s; 464 #undef NUM_BUFS 465 } 466 467 468 /* display a bit-field 469 */ 470 struct bits { 471 u_int bits_mask; 472 u_int bits_clear; 473 const char *bits_name; 474 }; 475 476 static struct bits if_bits[] = { 477 { IFF_LOOPBACK, 0, "LOOPBACK" }, 478 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 479 { 0, 0, 0} 480 }; 481 482 static struct bits is_bits[] = { 483 { IS_ALIAS, 0, "ALIAS" }, 484 { IS_SUBNET, 0, "" }, 485 { IS_REMOTE, (IS_NO_RDISC 486 | IS_BCAST_RDISC), "REMOTE" }, 487 { IS_PASSIVE, (IS_NO_RDISC 488 | IS_NO_RIP 489 | IS_NO_SUPER_AG 490 | IS_PM_RDISC 491 | IS_NO_AG), "PASSIVE" }, 492 { IS_EXTERNAL, 0, "EXTERNAL" }, 493 { IS_CHECKED, 0, "" }, 494 { IS_ALL_HOSTS, 0, "" }, 495 { IS_ALL_ROUTERS, 0, "" }, 496 { IS_DISTRUST, 0, "DISTRUST" }, 497 { IS_BROKE, IS_SICK, "BROKEN" }, 498 { IS_SICK, 0, "SICK" }, 499 { IS_DUP, 0, "DUPLICATE" }, 500 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 501 { IS_NEED_NET_SYN, 0, "" }, 502 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 503 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 504 { (IS_NO_RIPV1_IN 505 | IS_NO_RIPV2_IN 506 | IS_NO_RIPV1_OUT 507 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 508 { (IS_NO_RIPV1_IN 509 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 510 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 511 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 512 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 513 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 514 { (IS_NO_ADV_IN 515 | IS_NO_SOL_OUT 516 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 517 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 518 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 519 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 520 { IS_ADV_OUT, 0, "RDISC_ADV" }, 521 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 522 { IS_PM_RDISC, 0, "" }, 523 { 0, 0, "%#x"} 524 }; 525 526 static struct bits rs_bits[] = { 527 { RS_IF, 0, "IF" }, 528 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 529 { RS_NET_SYN, 0, "NET_SYN" }, 530 { RS_SUBNET, 0, "" }, 531 { RS_LOCAL, 0, "LOCAL" }, 532 { RS_MHOME, 0, "MHOME" }, 533 { RS_STATIC, 0, "STATIC" }, 534 { RS_RDISC, 0, "RDISC" }, 535 { 0, 0, "%#x"} 536 }; 537 538 539 static void 540 trace_bits(const struct bits *tbl, 541 u_int field, 542 int force) 543 { 544 u_int b; 545 char c; 546 547 if (force) { 548 (void)putc('<', ftrace); 549 c = 0; 550 } else { 551 c = '<'; 552 } 553 554 while (field != 0 555 && (b = tbl->bits_mask) != 0) { 556 if ((b & field) == b) { 557 if (tbl->bits_name[0] != '\0') { 558 if (c) 559 (void)putc(c, ftrace); 560 (void)fprintf(ftrace, "%s", tbl->bits_name); 561 c = '|'; 562 } 563 if (0 == (field &= ~(b | tbl->bits_clear))) 564 break; 565 } 566 tbl++; 567 } 568 if (field != 0 && tbl->bits_name != 0) { 569 if (c) 570 (void)putc(c, ftrace); 571 (void)fprintf(ftrace, tbl->bits_name, field); 572 c = '|'; 573 } 574 575 if (c != '<' || force) 576 (void)fputs("> ", ftrace); 577 } 578 579 580 char * 581 rtname(naddr dst, 582 naddr mask, 583 naddr gate) 584 { 585 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 586 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 587 int i; 588 589 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 590 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 591 return buf; 592 } 593 594 595 static void 596 print_rts(struct rt_spare *rts, 597 int force_metric, /* -1=suppress, 0=default */ 598 int force_ifp, /* -1=suppress, 0=default */ 599 int force_router, /* -1=suppress, 0=default, 1=display */ 600 int force_tag, /* -1=suppress, 0=default, 1=display */ 601 int force_time) /* 0=suppress, 1=display */ 602 { 603 int i; 604 605 606 if (force_metric >= 0) 607 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 608 if (force_ifp >= 0) 609 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 610 "if?" : rts->rts_ifp->int_name)); 611 if (force_router > 0 612 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 613 (void)fprintf(ftrace, "router=%s ", 614 naddr_ntoa(rts->rts_router)); 615 if (force_time > 0) 616 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 617 if (force_tag > 0 618 || (force_tag == 0 && rts->rts_tag != 0)) 619 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 620 if (rts->rts_de_ag != 0) { 621 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 622 continue; 623 (void)fprintf(ftrace, "de_ag=%d ", i); 624 } 625 626 } 627 628 629 void 630 trace_if(const char *act, 631 struct interface *ifp) 632 { 633 if (!TRACEACTIONS || ftrace == 0) 634 return; 635 636 lastlog(); 637 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 638 (void)fprintf(ftrace, "%-15s-->%-15s ", 639 naddr_ntoa(ifp->int_addr), 640 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 641 ? ifp->int_dstaddr 642 : htonl(ifp->int_net)), 643 ifp->int_mask, 1)); 644 if (ifp->int_metric != 0) 645 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 646 if (ifp->int_adj_inmetric != 0) 647 (void)fprintf(ftrace, "adj_inmetric=%u ", 648 ifp->int_adj_inmetric); 649 if (ifp->int_adj_outmetric != 0) 650 (void)fprintf(ftrace, "adj_outmetric=%u ", 651 ifp->int_adj_outmetric); 652 if (!IS_RIP_OUT_OFF(ifp->int_state) 653 && ifp->int_d_metric != 0) 654 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 655 trace_bits(if_bits, ifp->int_if_flags, 0); 656 trace_bits(is_bits, ifp->int_state, 0); 657 (void)fputc('\n',ftrace); 658 } 659 660 661 void 662 trace_upslot(struct rt_entry *rt, 663 struct rt_spare *rts, 664 struct rt_spare *new) 665 { 666 if (!TRACEACTIONS || ftrace == 0) 667 return; 668 669 if (rts->rts_gate == new->rts_gate 670 && rts->rts_router == new->rts_router 671 && rts->rts_metric == new->rts_metric 672 && rts->rts_tag == new->rts_tag 673 && rts->rts_de_ag == new->rts_de_ag) 674 return; 675 676 lastlog(); 677 if (new->rts_gate == 0) { 678 (void)fprintf(ftrace, "Del #%d %-35s ", 679 (int)(rts - rt->rt_spares), 680 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 681 print_rts(rts, 0,0,0,0, 682 (rts != rt->rt_spares 683 || AGE_RT(rt->rt_state,new->rts_ifp))); 684 685 } else if (rts->rts_gate != RIP_DEFAULT) { 686 (void)fprintf(ftrace, "Chg #%d %-35s ", 687 (int)(rts - rt->rt_spares), 688 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 689 print_rts(rts, 0,0, 690 rts->rts_gate != new->rts_gate, 691 rts->rts_tag != new->rts_tag, 692 rts != rt->rt_spares || AGE_RT(rt->rt_state, 693 rt->rt_ifp)); 694 695 (void)fprintf(ftrace, "\n %19s%-16s ", "", 696 (new->rts_gate != rts->rts_gate 697 ? naddr_ntoa(new->rts_gate) : "")); 698 print_rts(new, 699 -(new->rts_metric == rts->rts_metric), 700 -(new->rts_ifp == rts->rts_ifp), 701 0, 702 rts->rts_tag != new->rts_tag, 703 (new->rts_time != rts->rts_time 704 && (rts != rt->rt_spares 705 || AGE_RT(rt->rt_state, new->rts_ifp)))); 706 707 } else { 708 (void)fprintf(ftrace, "Add #%d %-35s ", 709 (int)(rts - rt->rt_spares), 710 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 711 print_rts(new, 0,0,0,0, 712 (rts != rt->rt_spares 713 || AGE_RT(rt->rt_state,new->rts_ifp))); 714 } 715 (void)fputc('\n',ftrace); 716 } 717 718 719 /* miscellaneous message checked by the caller 720 */ 721 void 722 trace_misc(const char *p, ...) 723 { 724 va_list args; 725 726 if (ftrace == 0) 727 return; 728 729 lastlog(); 730 va_start(args, p); 731 vfprintf(ftrace, p, args); 732 va_end(args); 733 (void)fputc('\n',ftrace); 734 } 735 736 737 /* display a message if tracing actions 738 */ 739 void 740 trace_act(const char *p, ...) 741 { 742 va_list args; 743 744 if (!TRACEACTIONS || ftrace == 0) 745 return; 746 747 lastlog(); 748 va_start(args, p); 749 vfprintf(ftrace, p, args); 750 va_end(args); 751 (void)fputc('\n',ftrace); 752 } 753 754 755 /* display a message if tracing packets 756 */ 757 void 758 trace_pkt(const char *p, ...) 759 { 760 va_list args; 761 762 if (!TRACEPACKETS || ftrace == 0) 763 return; 764 765 lastlog(); 766 va_start(args, p); 767 vfprintf(ftrace, p, args); 768 va_end(args); 769 (void)fputc('\n',ftrace); 770 } 771 772 773 void 774 trace_change(struct rt_entry *rt, 775 u_int state, 776 struct rt_spare *new, 777 const char *label) 778 { 779 if (ftrace == 0) 780 return; 781 782 if (rt->rt_metric == new->rts_metric 783 && rt->rt_gate == new->rts_gate 784 && rt->rt_router == new->rts_router 785 && rt->rt_state == state 786 && rt->rt_tag == new->rts_tag 787 && rt->rt_de_ag == new->rts_de_ag) 788 return; 789 790 lastlog(); 791 (void)fprintf(ftrace, "%s %-35s ", 792 label, 793 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 794 print_rts(rt->rt_spares, 795 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 796 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 797 798 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 799 (int)strlen(label), "", "", 800 (rt->rt_gate != new->rts_gate 801 ? naddr_ntoa(new->rts_gate) : "")); 802 print_rts(new, 803 -(new->rts_metric == rt->rt_metric), 804 -(new->rts_ifp == rt->rt_ifp), 805 0, 806 rt->rt_tag != new->rts_tag, 807 (rt->rt_time != new->rts_time 808 && AGE_RT(rt->rt_state,new->rts_ifp))); 809 if (rt->rt_state != state) 810 trace_bits(rs_bits, state, 1); 811 (void)fputc('\n',ftrace); 812 } 813 814 815 void 816 trace_add_del(const char * action, struct rt_entry *rt) 817 { 818 if (ftrace == 0) 819 return; 820 821 lastlog(); 822 (void)fprintf(ftrace, "%s %-35s ", 823 action, 824 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 825 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 826 trace_bits(rs_bits, rt->rt_state, 0); 827 (void)fputc('\n',ftrace); 828 } 829 830 831 /* ARGSUSED */ 832 static int 833 walk_trace(struct radix_node *rn, 834 struct walkarg *w UNUSED) 835 { 836 #define RT ((struct rt_entry *)rn) 837 struct rt_spare *rts; 838 int i; 839 840 (void)fprintf(ftrace, " %-35s ", 841 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 842 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 843 trace_bits(rs_bits, RT->rt_state, 0); 844 if (RT->rt_poison_time >= now_garbage 845 && RT->rt_poison_metric < RT->rt_metric) 846 (void)fprintf(ftrace, "pm=%d@%s", 847 RT->rt_poison_metric, ts(RT->rt_poison_time)); 848 849 rts = &RT->rt_spares[1]; 850 for (i = 1; i < NUM_SPARES; i++, rts++) { 851 if (rts->rts_gate != RIP_DEFAULT) { 852 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 853 i, "", naddr_ntoa(rts->rts_gate)); 854 print_rts(rts, 0,0,0,0,1); 855 } 856 } 857 (void)fputc('\n',ftrace); 858 859 return 0; 860 } 861 862 863 static void 864 trace_dump(void) 865 { 866 struct interface *ifp; 867 868 if (ftrace == 0) 869 return; 870 lastlog(); 871 872 (void)fputs("current daemon state:\n", ftrace); 873 LIST_FOREACH(ifp, &ifnet, int_list) 874 trace_if("", ifp); 875 (void)rn_walktree(rhead, walk_trace, 0); 876 } 877 878 879 void 880 trace_rip(const char *dir1, const char *dir2, 881 struct sockaddr_in *who, 882 struct interface *ifp, 883 struct rip *msg, 884 int size) /* total size of message */ 885 { 886 struct netinfo *n, *lim; 887 # define NA ((struct netauth*)n) 888 int i, seen_route; 889 890 if (!TRACEPACKETS || ftrace == 0) 891 return; 892 893 lastlog(); 894 if (msg->rip_cmd >= RIPCMD_MAX 895 || msg->rip_vers == 0) { 896 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 897 " %s.%d size=%d\n", 898 dir1, msg->rip_vers, msg->rip_cmd, dir2, 899 naddr_ntoa(who->sin_addr.s_addr), 900 ntohs(who->sin_port), 901 size); 902 return; 903 } 904 905 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 906 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 907 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 908 ifp ? " via " : "", ifp ? ifp->int_name : ""); 909 if (!TRACECONTENTS) 910 return; 911 912 seen_route = 0; 913 switch (msg->rip_cmd) { 914 case RIPCMD_REQUEST: 915 case RIPCMD_RESPONSE: 916 n = msg->rip_nets; 917 lim = (struct netinfo *)((char*)msg + size); 918 for (; n < lim; n++) { 919 if (!seen_route 920 && n->n_family == RIP_AF_UNSPEC 921 && ntohl(n->n_metric) == HOPCNT_INFINITY 922 && msg->rip_cmd == RIPCMD_REQUEST 923 && (n+1 == lim 924 || (n+2 == lim 925 && (n+1)->n_family == RIP_AF_AUTH))) { 926 (void)fputs("\tQUERY ", ftrace); 927 if (n->n_dst != 0) 928 (void)fprintf(ftrace, "%s ", 929 naddr_ntoa(n->n_dst)); 930 if (n->n_mask != 0) 931 (void)fprintf(ftrace, "mask=%#x ", 932 (u_int)ntohl(n->n_mask)); 933 if (n->n_nhop != 0) 934 (void)fprintf(ftrace, "nhop=%s ", 935 naddr_ntoa(n->n_nhop)); 936 if (n->n_tag != 0) 937 (void)fprintf(ftrace, "tag=%#x ", 938 ntohs(n->n_tag)); 939 (void)fputc('\n',ftrace); 940 continue; 941 } 942 943 if (n->n_family == RIP_AF_AUTH) { 944 if (NA->a_type == RIP_AUTH_PW 945 && n == msg->rip_nets) { 946 (void)fprintf(ftrace, "\tPassword" 947 " Authentication:" 948 " \"%s\"\n", 949 qstring(NA->au.au_pw, 950 RIP_AUTH_PW_LEN)); 951 continue; 952 } 953 954 if (NA->a_type == RIP_AUTH_MD5 955 && n == msg->rip_nets) { 956 (void)fprintf(ftrace, 957 "\tMD5 Auth" 958 " pkt_len=%d KeyID=%u" 959 " auth_len=%d" 960 " seqno=%#x" 961 " rsvd=%#x,%#x\n", 962 ntohs(NA->au.a_md5.md5_pkt_len), 963 NA->au.a_md5.md5_keyid, 964 NA->au.a_md5.md5_auth_len, 965 (int)ntohl(NA->au.a_md5.md5_seqno), 966 (int)ntohs(NA->au.a_md5.rsvd[0]), 967 (int)ntohs(NA->au.a_md5.rsvd[1])); 968 continue; 969 } 970 (void)fprintf(ftrace, 971 "\tAuthentication type %d: ", 972 ntohs(NA->a_type)); 973 for (i = 0; 974 i < (int)sizeof(NA->au.au_pw); 975 i++) 976 (void)fprintf(ftrace, "%02x ", 977 NA->au.au_pw[i]); 978 (void)fputc('\n',ftrace); 979 continue; 980 } 981 982 seen_route = 1; 983 if (n->n_family != RIP_AF_INET) { 984 (void)fprintf(ftrace, 985 "\t(af %d) %-18s mask=%#x ", 986 ntohs(n->n_family), 987 naddr_ntoa(n->n_dst), 988 (u_int)ntohl(n->n_mask)); 989 } else if (msg->rip_vers == RIPv1) { 990 (void)fprintf(ftrace, "\t%-18s ", 991 addrname(n->n_dst, 992 ntohl(n->n_mask), 993 n->n_mask==0 ? 2 : 1)); 994 } else { 995 (void)fprintf(ftrace, "\t%-18s ", 996 addrname(n->n_dst, 997 ntohl(n->n_mask), 998 n->n_mask==0 ? 2 : 0)); 999 } 1000 (void)fprintf(ftrace, "metric=%-2d ", 1001 (u_int)ntohl(n->n_metric)); 1002 if (n->n_nhop != 0) 1003 (void)fprintf(ftrace, " nhop=%s ", 1004 naddr_ntoa(n->n_nhop)); 1005 if (n->n_tag != 0) 1006 (void)fprintf(ftrace, "tag=%#x", 1007 ntohs(n->n_tag)); 1008 (void)fputc('\n',ftrace); 1009 } 1010 if (size != (char *)n - (char *)msg) 1011 (void)fprintf(ftrace, "truncated record, len %d\n", 1012 size); 1013 break; 1014 1015 case RIPCMD_TRACEON: 1016 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1017 msg->rip_tracefile); 1018 break; 1019 1020 case RIPCMD_TRACEOFF: 1021 break; 1022 } 1023 } 1024