1/* 2 * Copyright (c) 1985 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 --- 77 unchanged lines hidden (view full) --- 86 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 87 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 88 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 89 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 90 */ 91 92#if defined(LIBC_SCCS) && !defined(lint) 93static const char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; |
94static const char rcsid[] = "$Id: res_debug.c,v 1.10.18.5 2005/07/28 07:38:11 marka Exp $"; |
95#endif /* LIBC_SCCS and not lint */ 96#include <sys/cdefs.h> |
97__FBSDID("$FreeBSD: head/lib/libc/resolv/res_debug.c 170244 2007-06-03 17:20:27Z ume $"); |
98 99#include "port_before.h" 100 101#include <sys/types.h> 102#include <sys/param.h> 103#include <sys/socket.h> 104 105#include <netinet/in.h> --- 17 unchanged lines hidden (view full) --- 123# define SPRINTF(x) strlen(sprintf/**/x) 124#else 125# define SPRINTF(x) sprintf x 126#endif 127 128extern const char *_res_opcodes[]; 129extern const char *_res_sectioncodes[]; 130 |
131/*% |
132 * Print the current options. 133 */ 134void 135fp_resstat(const res_state statp, FILE *file) { 136 u_long mask; 137 138 fprintf(file, ";; res options:"); 139 for (mask = 1; mask != 0U; mask <<= 1) --- 76 unchanged lines hidden (view full) --- 216 } 217 rrnum++; 218 } 219 cleanup: 220 if (buf != NULL) 221 free(buf); 222} 223 |
224/*% |
225 * Print the contents of a query. 226 * This is intended to be primarily a debugging routine. 227 */ 228void 229res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) { 230 ns_msg handle; 231 int qdcount, ancount, nscount, arcount; 232 u_int opcode, rcode, id; --- 78 unchanged lines hidden (view full) --- 311 return (cp + n); 312} 313 314const u_char * 315p_cdname(const u_char *cp, const u_char *msg, FILE *file) { 316 return (p_cdnname(cp, msg, PACKETSZ, file)); 317} 318 |
319/*% 320 * Return a fully-qualified domain name from a compressed name (with |
321 length supplied). */ 322 323const u_char * 324p_fqnname(cp, msg, msglen, name, namelen) 325 const u_char *cp, *msg; 326 int msglen; 327 char *name; 328 int namelen; 329{ 330 int n, newlen; 331 332 if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) 333 return (NULL); 334 newlen = strlen(name); 335 if (newlen == 0 || name[newlen - 1] != '.') { |
336 if (newlen + 1 >= namelen) /*%< Lack space for final dot */ |
337 return (NULL); 338 else 339 strcpy(name + newlen, "."); 340 } 341 return (cp + n); 342} 343 344/* XXX: the rest of these functions need to become length-limited, too. */ --- 5 unchanged lines hidden (view full) --- 350 351 n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); 352 if (n == NULL) 353 return (NULL); 354 fputs(name, file); 355 return (n); 356} 357 |
358/*% |
359 * Names of RR classes and qclasses. Classes and qclasses are the same, except 360 * that C_ANY is a qclass but not a class. (You can ask for records of class 361 * C_ANY, but you can't have any records of that class in the database.) 362 */ 363const struct res_sym __p_class_syms[] = { 364 {C_IN, "IN", (char *)0}, 365 {C_CHAOS, "CH", (char *)0}, 366 {C_CHAOS, "CHAOS", (char *)0}, 367 {C_HS, "HS", (char *)0}, 368 {C_HS, "HESIOD", (char *)0}, 369 {C_ANY, "ANY", (char *)0}, 370 {C_NONE, "NONE", (char *)0}, 371 {C_IN, (char *)0, (char *)0} 372}; 373 |
374/*% |
375 * Names of message sections. 376 */ 377static const struct res_sym __p_default_section_syms[] = { 378 {ns_s_qd, "QUERY", (char *)0}, 379 {ns_s_an, "ANSWER", (char *)0}, 380 {ns_s_ns, "AUTHORITY", (char *)0}, 381 {ns_s_ar, "ADDITIONAL", (char *)0}, 382 {0, (char *)0, (char *)0} --- 20 unchanged lines hidden (view full) --- 403 {cert_t_pkix, "PKIX", "PKIX (X.509v3) Certificate"}, 404 {cert_t_spki, "SPKI", "SPKI certificate"}, 405 {cert_t_pgp, "PGP", "PGP certificate"}, 406 {cert_t_url, "URL", "URL Private"}, 407 {cert_t_oid, "OID", "OID Private"}, 408 {0, NULL, NULL} 409}; 410 |
411/*% |
412 * Names of RR types and qtypes. Types and qtypes are the same, except 413 * that T_ANY is a qtype but not a type. (You can ask for records of type 414 * T_ANY, but you can't have any records of that type in the database.) 415 */ 416const struct res_sym __p_type_syms[] = { 417 {ns_t_a, "A", "address"}, 418 {ns_t_ns, "NS", "name server"}, 419 {ns_t_md, "MD", "mail destination (deprecated)"}, --- 41 unchanged lines hidden (view full) --- 461 {ns_t_a6, "A6", "IPv6 Address"}, 462 {ns_t_dname, "DNAME", "dname"}, 463 {ns_t_sink, "SINK", "Kitchen Sink (experimental)"}, 464 {ns_t_opt, "OPT", "EDNS Options"}, 465 {ns_t_any, "ANY", "\"any\""}, 466 {0, NULL, NULL} 467}; 468 |
469/*% |
470 * Names of DNS rcodes. 471 */ 472const struct res_sym __p_rcode_syms[] = { 473 {ns_r_noerror, "NOERROR", "no error"}, 474 {ns_r_formerr, "FORMERR", "format error"}, 475 {ns_r_servfail, "SERVFAIL", "server failed"}, 476 {ns_r_nxdomain, "NXDOMAIN", "no such domain name"}, 477 {ns_r_notimpl, "NOTIMP", "not implemented"}, --- 16 unchanged lines hidden (view full) --- 494 if (strcasecmp (name, syms->name) == 0) { 495 if (success) 496 *success = 1; 497 return (syms->number); 498 } 499 } 500 if (success) 501 *success = 0; |
502 return (syms->number); /*%< The default value. */ |
503} 504 505const char * 506sym_ntos(const struct res_sym *syms, int number, int *success) { 507 char *unname = sym_ntos_unname; 508 509 for ((void)NULL; syms->name != 0; syms++) { 510 if (number == syms->number) { 511 if (success) 512 *success = 1; 513 return (syms->name); 514 } 515 } 516 |
517 sprintf(unname, "%d", number); /*%< XXX nonreentrant */ |
518 if (success) 519 *success = 0; 520 return (unname); 521} 522 523const char * 524sym_ntop(const struct res_sym *syms, int number, int *success) { 525 char *unname = sym_ntop_unname; 526 527 for ((void)NULL; syms->name != 0; syms++) { 528 if (number == syms->number) { 529 if (success) 530 *success = 1; 531 return (syms->humanname); 532 } 533 } |
534 sprintf(unname, "%d", number); /*%< XXX nonreentrant */ |
535 if (success) 536 *success = 0; 537 return (unname); 538} 539 |
540/*% |
541 * Return a string for the type. 542 */ 543const char * 544p_type(int type) { 545 int success; 546 const char *result; 547 static char typebuf[20]; 548 549 result = sym_ntos(__p_type_syms, type, &success); 550 if (success) 551 return (result); 552 if (type < 0 || type > 0xffff) 553 return ("BADTYPE"); 554 sprintf(typebuf, "TYPE%d", type); 555 return (typebuf); 556} 557 |
558/*% |
559 * Return a string for the type. 560 */ 561const char * 562p_section(int section, int opcode) { 563 const struct res_sym *symbols; 564 565 switch (opcode) { 566 case ns_o_update: 567 symbols = __p_update_section_syms; 568 break; 569 default: 570 symbols = __p_default_section_syms; 571 break; 572 } 573 return (sym_ntos(symbols, section, (int *)0)); 574} 575 |
576/*% |
577 * Return a mnemonic for class. 578 */ 579const char * 580p_class(int class) { 581 int success; 582 const char *result; 583 static char classbuf[20]; 584 585 result = sym_ntos(__p_class_syms, class, &success); 586 if (success) 587 return (result); 588 if (class < 0 || class > 0xffff) 589 return ("BADCLASS"); 590 sprintf(classbuf, "CLASS%d", class); 591 return (classbuf); 592} 593 |
594/*% |
595 * Return a mnemonic for an option 596 */ 597const char * 598p_option(u_long option) { 599 char *nbuf = p_option_nbuf; 600 601 switch (option) { 602 case RES_INIT: return "init"; --- 5 unchanged lines hidden (view full) --- 608 case RES_RECURSE: return "recurs"; 609 case RES_DEFNAMES: return "defnam"; 610 case RES_STAYOPEN: return "styopn"; 611 case RES_DNSRCH: return "dnsrch"; 612 case RES_INSECURE1: return "insecure1"; 613 case RES_INSECURE2: return "insecure2"; 614 case RES_NOALIASES: return "noaliases"; 615 case RES_USE_INET6: return "inet6"; |
616#ifdef RES_USE_EDNS0 /*%< KAME extension */ |
617 case RES_USE_EDNS0: return "edns0"; 618#endif 619#ifdef RES_USE_DNAME 620 case RES_USE_DNAME: return "dname"; 621#endif 622#ifdef RES_USE_DNSSEC 623 case RES_USE_DNSSEC: return "dnssec"; 624#endif --- 4 unchanged lines hidden (view full) --- 629 case RES_NO_NIBBLE2: return "no-nibble2"; 630#endif 631 /* XXX nonreentrant */ 632 default: sprintf(nbuf, "?0x%lx?", (u_long)option); 633 return (nbuf); 634 } 635} 636 |
637/*% |
638 * Return a mnemonic for a time to live. 639 */ 640const char * 641p_time(u_int32_t value) { 642 char *nbuf = p_time_nbuf; 643 644 if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) 645 sprintf(nbuf, "%u", value); 646 return (nbuf); 647} 648 |
649/*% |
650 * Return a string for the rcode. 651 */ 652const char * 653p_rcode(int rcode) { 654 return (sym_ntos(__p_rcode_syms, rcode, (int *)0)); 655} 656 |
657/*% |
658 * Return a string for a res_sockaddr_union. 659 */ 660const char * 661p_sockun(union res_sockaddr_union u, char *buf, size_t size) { 662 char ret[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:123.123.123.123"]; 663 664 switch (u.sin.sin_family) { 665 case AF_INET: --- 10 unchanged lines hidden (view full) --- 676 } 677 if (size > 0U) { 678 strncpy(buf, ret, size - 1); 679 buf[size - 1] = '0'; 680 } 681 return (buf); 682} 683 |
684/*% |
685 * routines to convert between on-the-wire RR format and zone file format. 686 * Does not contain conversion to/from decimal degrees; divide or multiply 687 * by 60*60*1000 for that. 688 */ 689 690static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000, 691 1000000,10000000,100000000,1000000000}; 692 |
693/*% takes an XeY precision/size value, returns a string representation. */ |
694static const char * 695precsize_ntoa(prec) 696 u_int8_t prec; 697{ 698 char *retbuf = precsize_ntoa_retbuf; 699 unsigned long val; 700 int mantissa, exponent; 701 702 mantissa = (int)((prec >> 4) & 0x0f) % 10; 703 exponent = (int)((prec >> 0) & 0x0f) % 10; 704 705 val = mantissa * poweroften[exponent]; 706 707 (void) sprintf(retbuf, "%lu.%.2lu", val/100, val%100); 708 return (retbuf); 709} 710 |
711/*% converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ |
712static u_int8_t 713precsize_aton(const char **strptr) { 714 unsigned int mval = 0, cmval = 0; 715 u_int8_t retval = 0; 716 const char *cp; 717 int exponent; 718 int mantissa; 719 720 cp = *strptr; 721 722 while (isdigit((unsigned char)*cp)) 723 mval = mval * 10 + (*cp++ - '0'); 724 |
725 if (*cp == '.') { /*%< centimeters */ |
726 cp++; 727 if (isdigit((unsigned char)*cp)) { 728 cmval = (*cp++ - '0') * 10; 729 if (isdigit((unsigned char)*cp)) { 730 cmval += (*cp++ - '0'); 731 } 732 } 733 } --- 9 unchanged lines hidden (view full) --- 743 744 retval = (mantissa << 4) | exponent; 745 746 *strptr = cp; 747 748 return (retval); 749} 750 |
751/*% converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ |
752static u_int32_t 753latlon2ul(const char **latlonstrptr, int *which) { 754 const char *cp; 755 u_int32_t retval; 756 int deg = 0, min = 0, secs = 0, secsfrac = 0; 757 758 cp = *latlonstrptr; 759 --- 13 unchanged lines hidden (view full) --- 773 cp++; 774 775 if (!(isdigit((unsigned char)*cp))) 776 goto fndhemi; 777 778 while (isdigit((unsigned char)*cp)) 779 secs = secs * 10 + (*cp++ - '0'); 780 |
781 if (*cp == '.') { /*%< decimal seconds */ |
782 cp++; 783 if (isdigit((unsigned char)*cp)) { 784 secsfrac = (*cp++ - '0') * 100; 785 if (isdigit((unsigned char)*cp)) { 786 secsfrac += (*cp++ - '0') * 10; 787 if (isdigit((unsigned char)*cp)) { 788 secsfrac += (*cp++ - '0'); 789 } 790 } 791 } 792 } 793 |
794 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */ |
795 cp++; 796 797 while (isspace((unsigned char)*cp)) 798 cp++; 799 800 fndhemi: 801 switch (*cp) { 802 case 'N': case 'n': --- 4 unchanged lines hidden (view full) --- 807 break; 808 case 'S': case 's': 809 case 'W': case 'w': 810 retval = ((unsigned)1<<31) 811 - (((((deg * 60) + min) * 60) + secs) * 1000) 812 - secsfrac; 813 break; 814 default: |
815 retval = 0; /*%< invalid value -- indicates error */ |
816 break; 817 } 818 819 switch (*cp) { 820 case 'N': case 'n': 821 case 'S': case 's': |
822 *which = 1; /*%< latitude */ |
823 break; 824 case 'E': case 'e': 825 case 'W': case 'w': |
826 *which = 2; /*%< longitude */ |
827 break; 828 default: |
829 *which = 0; /*%< error */ |
830 break; 831 } 832 |
833 cp++; /*%< skip the hemisphere */ 834 while (!isspace((unsigned char)*cp)) /*%< if any trailing garbage */ |
835 cp++; 836 |
837 while (isspace((unsigned char)*cp)) /*%< move to next field */ |
838 cp++; 839 840 *latlonstrptr = cp; 841 842 return (retval); 843} 844 |
845/*% 846 * converts a zone file representation in a string to an RDATA on-the-wire |
847 * representation. */ 848int 849loc_aton(ascii, binary) 850 const char *ascii; 851 u_char *binary; 852{ 853 const char *cp, *maxcp; 854 u_char *bcp; 855 856 u_int32_t latit = 0, longit = 0, alt = 0; 857 u_int32_t lltemp1 = 0, lltemp2 = 0; 858 int altmeters = 0, altfrac = 0, altsign = 1; |
859 u_int8_t hp = 0x16; /*%< default = 1e6 cm = 10000.00m = 10km */ 860 u_int8_t vp = 0x13; /*%< default = 1e3 cm = 10.00m */ 861 u_int8_t siz = 0x12; /*%< default = 1e2 cm = 1.00m */ |
862 int which1 = 0, which2 = 0; 863 864 cp = ascii; 865 maxcp = cp + strlen(ascii); 866 867 lltemp1 = latlon2ul(&cp, &which1); 868 869 lltemp2 = latlon2ul(&cp, &which2); 870 871 switch (which1 + which2) { |
872 case 3: /*%< 1 + 2, the only valid combination */ 873 if ((which1 == 1) && (which2 == 2)) { /*%< normal case */ |
874 latit = lltemp1; 875 longit = lltemp2; |
876 } else if ((which1 == 2) && (which2 == 1)) { /*%< reversed */ |
877 longit = lltemp1; 878 latit = lltemp2; |
879 } else { /*%< some kind of brokenness */ |
880 return (0); 881 } 882 break; |
883 default: /*%< we didn't get one of each */ |
884 return (0); 885 } 886 887 /* altitude */ 888 if (*cp == '-') { 889 altsign = -1; 890 cp++; 891 } 892 893 if (*cp == '+') 894 cp++; 895 896 while (isdigit((unsigned char)*cp)) 897 altmeters = altmeters * 10 + (*cp++ - '0'); 898 |
899 if (*cp == '.') { /*%< decimal meters */ |
900 cp++; 901 if (isdigit((unsigned char)*cp)) { 902 altfrac = (*cp++ - '0') * 10; 903 if (isdigit((unsigned char)*cp)) { 904 altfrac += (*cp++ - '0'); 905 } 906 } 907 } 908 909 alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); 910 |
911 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
912 cp++; 913 914 while (isspace((unsigned char)*cp) && (cp < maxcp)) 915 cp++; 916 917 if (cp >= maxcp) 918 goto defaults; 919 920 siz = precsize_aton(&cp); 921 |
922 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
923 cp++; 924 925 while (isspace((unsigned char)*cp) && (cp < maxcp)) 926 cp++; 927 928 if (cp >= maxcp) 929 goto defaults; 930 931 hp = precsize_aton(&cp); 932 |
933 while (!isspace((unsigned char)*cp) && (cp < maxcp)) /*%< if trailing garbage or m */ |
934 cp++; 935 936 while (isspace((unsigned char)*cp) && (cp < maxcp)) 937 cp++; 938 939 if (cp >= maxcp) 940 goto defaults; 941 942 vp = precsize_aton(&cp); 943 944 defaults: 945 946 bcp = binary; |
947 *bcp++ = (u_int8_t) 0; /*%< version byte */ |
948 *bcp++ = siz; 949 *bcp++ = hp; 950 *bcp++ = vp; 951 PUTLONG(latit,bcp); 952 PUTLONG(longit,bcp); 953 PUTLONG(alt,bcp); 954 |
955 return (16); /*%< size of RR in octets */ |
956} 957 |
958/*% takes an on-the-wire LOC RR and formats it in a human readable format. */ |
959const char * 960loc_ntoa(binary, ascii) 961 const u_char *binary; 962 char *ascii; 963{ 964 static const char *error = "?"; 965 static char tmpbuf[sizeof 966"1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"]; --- 30 unchanged lines hidden (view full) --- 997 998 GETLONG(templ, cp); 999 latval = (templ - ((unsigned)1<<31)); 1000 1001 GETLONG(templ, cp); 1002 longval = (templ - ((unsigned)1<<31)); 1003 1004 GETLONG(templ, cp); |
1005 if (templ < referencealt) { /*%< below WGS 84 spheroid */ |
1006 altval = referencealt - templ; 1007 altsign = "-"; 1008 } else { 1009 altval = templ - referencealt; 1010 altsign = ""; 1011 } 1012 1013 if (latval < 0) { --- 46 unchanged lines hidden (view full) --- 1060 free(hpstr); 1061 if (vpstr != NULL) 1062 free(vpstr); 1063 1064 return (ascii); 1065} 1066 1067 |
1068/*% Return the number of DNS hierarchy levels in the name. */ |
1069int 1070dn_count_labels(const char *name) { 1071 int i, len, count; 1072 1073 len = strlen(name); 1074 for (i = 0, count = 0; i < len; i++) { 1075 /* XXX need to check for \. or use named's nlabels(). */ 1076 if (name[i] == '.') --- 8 unchanged lines hidden (view full) --- 1085 /* don't count the null label for root. */ 1086 /* if terminating '.' not found, must adjust */ 1087 /* count to include last label */ 1088 if (len > 0 && name[len-1] != '.') 1089 count++; 1090 return (count); 1091} 1092 |
1093/*% |
1094 * Make dates expressed in seconds-since-Jan-1-1970 easy to read. 1095 * SIG records are required to be printed like this, by the Secure DNS RFC. 1096 */ 1097char * 1098p_secstodate (u_long secs) { 1099 char *output = p_secstodate_output; 1100 time_t clock = secs; 1101 struct tm *time; --- 71 unchanged lines hidden (view full) --- 1173#undef sym_ntos 1174__weak_reference(__sym_ntos, sym_ntos); 1175#undef sym_ntop 1176__weak_reference(__sym_ntop, sym_ntop); 1177#undef dn_count_labels 1178__weak_reference(__dn_count_labels, dn_count_labels); 1179#undef p_secstodate 1180__weak_reference(__p_secstodate, p_secstodate); |
1181 1182/*! \file */ |