/* * Copyright (c) 1985 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)res_debug.c 8.1 (Berkeley) 6/4/93 * $FreeBSD: src/lib/libc/net/res_debug.c,v 1.18.2.1 2001/06/15 22:08:28 ume Exp $ * $DragonFly: src/lib/libc/net/res_debug.c,v 1.4 2005/11/13 02:04:47 swildner Exp $ */ /* * Portions Copyright (c) 1993 by Digital Equipment Corporation. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies, and that * the name of Digital Equipment Corporation not be used in advertising or * publicity pertaining to distribution of the document or software without * specific, written prior permission. * * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ /* * Portions Copyright (c) 1995 by International Business Machines, Inc. * * International Business Machines, Inc. (hereinafter called IBM) grants * permission under its copyrights to use, copy, modify, and distribute this * Software with or without fee, provided that the above copyright notice and * all paragraphs of this notice appear in all copies, and that the name of IBM * not be used in connection with the marketing of any product incorporating * the Software or modifications thereof, without specific, written prior * permission. * * To the extent it has a right to do so, IBM grants an immunity from suit * under its patents, if any, for the use, sale or manufacture of products to * the extent that such products are used for performing Domain Name System * dynamic updates in TCP/IP networks by means of the Software. No immunity is * granted for any product per se or for any other function of any product. * * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. */ /* * Portions Copyright (c) 1996 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define SPRINTF(x) sprintf x extern const char *_res_opcodes[]; extern const char *_res_resultcodes[]; extern const char *_res_sectioncodes[]; /* * Print the current options. */ void fp_resstat(struct __res_state *statp, FILE *file) { u_long mask; fprintf(file, ";; res options:"); if (!statp) statp = &_res; for (mask = 1; mask != 0; mask <<= 1) if (statp->options & mask) fprintf(file, " %s", p_option(mask)); putc('\n', file); } static void do_section(ns_msg *handle, ns_sect section, int pflag, FILE *file) { int n, sflag, rrnum; char buf[2048]; /* XXX need to malloc */ ns_opcode opcode; ns_rr rr; /* * Print answer records. */ sflag = (_res.pfcode & pflag); if (_res.pfcode && !sflag) return; opcode = ns_msg_getflag(*handle, ns_f_opcode); rrnum = 0; for (;;) { if (ns_parserr(handle, section, rrnum, &rr)) { if (errno != ENODEV) fprintf(file, ";; ns_parserr: %s\n", strerror(errno)); else if (rrnum > 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1)) putc('\n', file); return; } if (rrnum == 0 && sflag != 0 && (_res.pfcode & RES_PRF_HEAD1)) fprintf(file, ";; %s SECTION:\n", p_section(section, opcode)); if (section == ns_s_qd) fprintf(file, ";;\t%s, type = %s, class = %s\n", ns_rr_name(rr), p_type(ns_rr_type(rr)), p_class(ns_rr_class(rr))); else { n = ns_sprintrr(handle, &rr, NULL, NULL, buf, sizeof buf); if (n < 0) { fprintf(file, ";; ns_sprintrr: %s\n", strerror(errno)); return; } fputs(buf, file); fputc('\n', file); } rrnum++; } } void p_query(const u_char *msg) { fp_query(msg, stdout); } void fp_query(const u_char *msg, FILE *file) { fp_nquery(msg, PACKETSZ, file); } /* * Print the contents of a query. * This is intended to be primarily a debugging routine. */ void fp_nquery(const u_char *msg, int len, FILE *file) { ns_msg handle; int qdcount, ancount, nscount, arcount; u_int opcode, rcode, id; if ((_res.options & RES_INIT) == 0 && res_init() == -1) return; if (ns_initparse(msg, len, &handle) < 0) { fprintf(file, ";; ns_initparse: %s\n", strerror(errno)); return; } opcode = ns_msg_getflag(handle, ns_f_opcode); rcode = ns_msg_getflag(handle, ns_f_rcode); id = ns_msg_id(handle); qdcount = ns_msg_count(handle, ns_s_qd); ancount = ns_msg_count(handle, ns_s_an); nscount = ns_msg_count(handle, ns_s_ns); arcount = ns_msg_count(handle, ns_s_ar); /* * Print header fields. */ if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || rcode) fprintf(file, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", _res_opcodes[opcode], _res_resultcodes[rcode], id); if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX)) putc(';', file); if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) { fprintf(file, "; flags:"); if (ns_msg_getflag(handle, ns_f_qr)) fprintf(file, " qr"); if (ns_msg_getflag(handle, ns_f_aa)) fprintf(file, " aa"); if (ns_msg_getflag(handle, ns_f_tc)) fprintf(file, " tc"); if (ns_msg_getflag(handle, ns_f_rd)) fprintf(file, " rd"); if (ns_msg_getflag(handle, ns_f_ra)) fprintf(file, " ra"); if (ns_msg_getflag(handle, ns_f_z)) fprintf(file, " ??"); if (ns_msg_getflag(handle, ns_f_ad)) fprintf(file, " ad"); if (ns_msg_getflag(handle, ns_f_cd)) fprintf(file, " cd"); } if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) { fprintf(file, "; %s: %d", p_section(ns_s_qd, opcode), qdcount); fprintf(file, ", %s: %d", p_section(ns_s_an, opcode), ancount); fprintf(file, ", %s: %d", p_section(ns_s_ns, opcode), nscount); fprintf(file, ", %s: %d", p_section(ns_s_ar, opcode), arcount); } if ((!_res.pfcode) || (_res.pfcode & (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { putc('\n',file); } /* * Print the various sections. */ do_section(&handle, ns_s_qd, RES_PRF_QUES, file); do_section(&handle, ns_s_an, RES_PRF_ANS, file); do_section(&handle, ns_s_ns, RES_PRF_AUTH, file); do_section(&handle, ns_s_ar, RES_PRF_ADD, file); if (qdcount == 0 && ancount == 0 && nscount == 0 && arcount == 0) putc('\n', file); } const u_char * p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) { char name[MAXDNAME]; int n; if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0) return (NULL); if (name[0] == '\0') putc('.', file); else fputs(name, file); return (cp + n); } const u_char * p_cdname(const u_char *cp, const u_char *msg, FILE *file) { return (p_cdnname(cp, msg, PACKETSZ, file)); } /* Return a fully-qualified domain name from a compressed name (with length supplied). */ const u_char * p_fqnname(const u_char *cp, const u_char *msg, int msglen, char *name, int namelen) { int n, newlen; if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) return (NULL); newlen = strlen(name); if (newlen == 0 || name[newlen - 1] != '.') { if (newlen + 1 >= namelen) /* Lack space for final dot */ return (NULL); else strcpy(name + newlen, "."); } return (cp + n); } /* XXX: the rest of these functions need to become length-limited, too. */ const u_char * p_fqname(const u_char *cp, const u_char *msg, FILE *file) { char name[MAXDNAME]; const u_char *n; n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); if (n == NULL) return (NULL); fputs(name, file); return (n); } /* * Names of RR classes and qclasses. Classes and qclasses are the same, except * that C_ANY is a qclass but not a class. (You can ask for records of class * C_ANY, but you can't have any records of that class in the database.) */ const struct res_sym __p_class_syms[] = { {C_IN, "IN"}, {C_CHAOS, "CHAOS"}, {C_HS, "HS"}, {C_HS, "HESIOD"}, {C_ANY, "ANY"}, {C_NONE, "NONE"}, {C_IN, (char *)0} }; /* * Names of message sections. */ const struct res_sym __p_default_section_syms[] = { {ns_s_qd, "QUERY"}, {ns_s_an, "ANSWER"}, {ns_s_ns, "AUTHORITY"}, {ns_s_ar, "ADDITIONAL"}, {0, (char *)0} }; const struct res_sym __p_update_section_syms[] = { {S_ZONE, "ZONE"}, {S_PREREQ, "PREREQUISITE"}, {S_UPDATE, "UPDATE"}, {S_ADDT, "ADDITIONAL"}, {0, (char *)0} }; /* * Names of RR types and qtypes. Types and qtypes are the same, except * that T_ANY is a qtype but not a type. (You can ask for records of type * T_ANY, but you can't have any records of that type in the database.) */ const struct res_sym __p_type_syms[] = { {T_A, "A", "address"}, {T_NS, "NS", "name server"}, {T_MD, "MD", "mail destination (deprecated)"}, {T_MF, "MF", "mail forwarder (deprecated)"}, {T_CNAME, "CNAME", "canonical name"}, {T_SOA, "SOA", "start of authority"}, {T_MB, "MB", "mailbox"}, {T_MG, "MG", "mail group member"}, {T_MR, "MR", "mail rename"}, {T_NULL, "NULL", "null"}, {T_WKS, "WKS", "well-known service (deprecated)"}, {T_PTR, "PTR", "domain name pointer"}, {T_HINFO, "HINFO", "host information"}, {T_MINFO, "MINFO", "mailbox information"}, {T_MX, "MX", "mail exchanger"}, {T_TXT, "TXT", "text"}, {T_RP, "RP", "responsible person"}, {T_AFSDB, "AFSDB", "DCE or AFS server"}, {T_X25, "X25", "X25 address"}, {T_ISDN, "ISDN", "ISDN address"}, {T_RT, "RT", "router"}, {T_NSAP, "NSAP", "nsap address"}, {T_NSAP_PTR, "NSAP_PTR", "domain name pointer"}, {T_SIG, "SIG", "signature"}, {T_KEY, "KEY", "key"}, {T_PX, "PX", "mapping information"}, {T_GPOS, "GPOS", "geographical position (withdrawn)"}, {T_AAAA, "AAAA", "IPv6 address"}, {T_LOC, "LOC", "location"}, {T_NXT, "NXT", "next valid name (unimplemented)"}, {T_EID, "EID", "endpoint identifier (unimplemented)"}, {T_NIMLOC, "NIMLOC", "NIMROD locator (unimplemented)"}, {T_SRV, "SRV", "server selection"}, {T_ATMA, "ATMA", "ATM address (unimplemented)"}, {T_IXFR, "IXFR", "incremental zone transfer"}, {T_AXFR, "AXFR", "zone transfer"}, {T_MAILB, "MAILB", "mailbox-related data (deprecated)"}, {T_MAILA, "MAILA", "mail agent (deprecated)"}, {T_NAPTR, "NAPTR", "URN Naming Authority"}, {T_ANY, "ANY", "\"any\""}, {0, NULL, NULL} }; int sym_ston(const struct res_sym *syms, const char *name, int *success) { for (; syms->name != 0; syms++) { if (strcasecmp (name, syms->name) == 0) { if (success) *success = 1; return (syms->number); } } if (success) *success = 0; return (syms->number); /* The default value. */ } const char * sym_ntos(const struct res_sym *syms, int number, int *success) { static char unname[20]; for (; syms->name != 0; syms++) { if (number == syms->number) { if (success) *success = 1; return (syms->name); } } sprintf(unname, "%d", number); if (success) *success = 0; return (unname); } const char * sym_ntop(const struct res_sym *syms, int number, int *success) { static char unname[20]; for (; syms->name != 0; syms++) { if (number == syms->number) { if (success) *success = 1; return (syms->humanname); } } sprintf(unname, "%d", number); if (success) *success = 0; return (unname); } /* * Return a string for the type. */ const char * p_type(int type) { return (sym_ntos(__p_type_syms, type, (int *)0)); } /* * Return a string for the type. */ const char * p_section(int section, int opcode) { const struct res_sym *symbols; switch (opcode) { case ns_o_update: symbols = __p_update_section_syms; break; default: symbols = __p_default_section_syms; break; } return (sym_ntos(symbols, section, (int *)0)); } /* * Return a mnemonic for class. */ const char * p_class(int class) { return (sym_ntos(__p_class_syms, class, (int *)0)); } /* * Return a mnemonic for an option */ const char * p_option(u_long option) { static char nbuf[40]; switch (option) { case RES_INIT: return "init"; case RES_DEBUG: return "debug"; case RES_AAONLY: return "aaonly(unimpl)"; case RES_USEVC: return "usevc"; case RES_PRIMARY: return "primry(unimpl)"; case RES_IGNTC: return "igntc"; case RES_RECURSE: return "recurs"; case RES_DEFNAMES: return "defnam"; case RES_STAYOPEN: return "styopn"; case RES_DNSRCH: return "dnsrch"; case RES_INSECURE1: return "insecure1"; case RES_INSECURE2: return "insecure2"; case RES_NOALIASES: return "noaliases"; case RES_USE_INET6: return "inet6"; case RES_NOTLDQUERY: return "no-tld-query"; case RES_USE_EDNS0: return "edns0"; default: sprintf(nbuf, "?0x%lx?", (u_long)option); return (nbuf); } } /* * Return a mnemonic for a time to live. */ const char * p_time(u_int32_t value) { static char nbuf[40]; if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) sprintf(nbuf, "%u", value); return (nbuf); } /* * routines to convert between on-the-wire RR format and zone file format. * Does not contain conversion to/from decimal degrees; divide or multiply * by 60*60*1000 for that. */ static unsigned int poweroften[10] = {1, 10, 100, 1000, 10000, 100000, 1000000,10000000,100000000,1000000000}; /* takes an XeY precision/size value, returns a string representation. */ static const char * precsize_ntoa(u_int8_t prec) { static char retbuf[sizeof "90000000.00"]; unsigned long val; int mantissa, exponent; mantissa = (int)((prec >> 4) & 0x0f) % 10; exponent = (int)((prec >> 0) & 0x0f) % 10; val = mantissa * poweroften[exponent]; sprintf(retbuf, "%ld.%.2ld", val/100, val%100); return (retbuf); } /* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ static u_int8_t precsize_aton(char **strptr) { unsigned int mval = 0, cmval = 0; u_int8_t retval = 0; char *cp; int exponent; int mantissa; cp = *strptr; while (isdigit((unsigned char)*cp)) mval = mval * 10 + (*cp++ - '0'); if (*cp == '.') { /* centimeters */ cp++; if (isdigit((unsigned char)*cp)) { cmval = (*cp++ - '0') * 10; if (isdigit((unsigned char)*cp)) { cmval += (*cp++ - '0'); } } } cmval = (mval * 100) + cmval; for (exponent = 0; exponent < 9; exponent++) if (cmval < poweroften[exponent+1]) break; mantissa = cmval / poweroften[exponent]; if (mantissa > 9) mantissa = 9; retval = (mantissa << 4) | exponent; *strptr = cp; return (retval); } /* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ static u_int32_t latlon2ul(char **latlonstrptr, int *which) { char *cp; u_int32_t retval; int deg = 0, min = 0, secs = 0, secsfrac = 0; cp = *latlonstrptr; while (isdigit((unsigned char)*cp)) deg = deg * 10 + (*cp++ - '0'); while (isspace((unsigned char)*cp)) cp++; if (!(isdigit((unsigned char)*cp))) goto fndhemi; while (isdigit((unsigned char)*cp)) min = min * 10 + (*cp++ - '0'); while (isspace((unsigned char)*cp)) cp++; if (!(isdigit((unsigned char)*cp))) goto fndhemi; while (isdigit((unsigned char)*cp)) secs = secs * 10 + (*cp++ - '0'); if (*cp == '.') { /* decimal seconds */ cp++; if (isdigit((unsigned char)*cp)) { secsfrac = (*cp++ - '0') * 100; if (isdigit((unsigned char)*cp)) { secsfrac += (*cp++ - '0') * 10; if (isdigit((unsigned char)*cp)) { secsfrac += (*cp++ - '0'); } } } } while (!isspace((unsigned char)*cp)) /* if any trailing garbage */ cp++; while (isspace((unsigned char)*cp)) cp++; fndhemi: switch (*cp) { case 'N': case 'n': case 'E': case 'e': retval = ((unsigned)1<<31) + (((((deg * 60) + min) * 60) + secs) * 1000) + secsfrac; break; case 'S': case 's': case 'W': case 'w': retval = ((unsigned)1<<31) - (((((deg * 60) + min) * 60) + secs) * 1000) - secsfrac; break; default: retval = 0; /* invalid value -- indicates error */ break; } switch (*cp) { case 'N': case 'n': case 'S': case 's': *which = 1; /* latitude */ break; case 'E': case 'e': case 'W': case 'w': *which = 2; /* longitude */ break; default: *which = 0; /* error */ break; } cp++; /* skip the hemisphere */ while (!isspace((unsigned char)*cp)) /* if any trailing garbage */ cp++; while (isspace((unsigned char)*cp)) /* move to next field */ cp++; *latlonstrptr = cp; return (retval); } /* converts a zone file representation in a string to an RDATA on-the-wire * representation. */ int loc_aton(const char *ascii, u_char *binary) { const char *cp, *maxcp; u_char *bcp; u_int32_t latit = 0, longit = 0, alt = 0; u_int32_t lltemp1 = 0, lltemp2 = 0; int altmeters = 0, altfrac = 0, altsign = 1; u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */ u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */ u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */ int which1 = 0, which2 = 0; cp = ascii; maxcp = cp + strlen(ascii); lltemp1 = latlon2ul(&cp, &which1); lltemp2 = latlon2ul(&cp, &which2); switch (which1 + which2) { case 3: /* 1 + 2, the only valid combination */ if ((which1 == 1) && (which2 == 2)) { /* normal case */ latit = lltemp1; longit = lltemp2; } else if ((which1 == 2) && (which2 == 1)) { /* reversed */ longit = lltemp1; latit = lltemp2; } else { /* some kind of brokenness */ return (0); } break; default: /* we didn't get one of each */ return (0); } /* altitude */ if (*cp == '-') { altsign = -1; cp++; } if (*cp == '+') cp++; while (isdigit((unsigned char)*cp)) altmeters = altmeters * 10 + (*cp++ - '0'); if (*cp == '.') { /* decimal meters */ cp++; if (isdigit((unsigned char)*cp)) { altfrac = (*cp++ - '0') * 10; if (isdigit((unsigned char)*cp)) { altfrac += (*cp++ - '0'); } } } alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ cp++; while (isspace((unsigned char)*cp) && (cp < maxcp)) cp++; if (cp >= maxcp) goto defaults; siz = precsize_aton(&cp); while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ cp++; while (isspace((unsigned char)*cp) && (cp < maxcp)) cp++; if (cp >= maxcp) goto defaults; hp = precsize_aton(&cp); while (!isspace((unsigned char)*cp) && (cp < maxcp)) /* if trailing garbage or m */ cp++; while (isspace((unsigned char)*cp) && (cp < maxcp)) cp++; if (cp >= maxcp) goto defaults; vp = precsize_aton(&cp); defaults: bcp = binary; *bcp++ = (u_int8_t) 0; /* version byte */ *bcp++ = siz; *bcp++ = hp; *bcp++ = vp; PUTLONG(latit,bcp); PUTLONG(longit,bcp); PUTLONG(alt,bcp); return (16); /* size of RR in octets */ } /* takes an on-the-wire LOC RR and formats it in a human readable format. */ const char * loc_ntoa(const u_char *binary, char *ascii) { static char *error = "?"; const u_char *cp = binary; int latdeg, latmin, latsec, latsecfrac; int longdeg, longmin, longsec, longsecfrac; char northsouth, eastwest; int altmeters, altfrac, altsign; const u_int32_t referencealt = 100000 * 100; int32_t latval, longval, altval; u_int32_t templ; u_int8_t sizeval, hpval, vpval, versionval; char *sizestr, *hpstr, *vpstr; versionval = *cp++; if (versionval) { sprintf(ascii, "; error: unknown LOC RR version"); return (ascii); } sizeval = *cp++; hpval = *cp++; vpval = *cp++; GETLONG(templ, cp); latval = (templ - ((unsigned)1<<31)); GETLONG(templ, cp); longval = (templ - ((unsigned)1<<31)); GETLONG(templ, cp); if (templ < referencealt) { /* below WGS 84 spheroid */ altval = referencealt - templ; altsign = -1; } else { altval = templ - referencealt; altsign = 1; } if (latval < 0) { northsouth = 'S'; latval = -latval; } else northsouth = 'N'; latsecfrac = latval % 1000; latval = latval / 1000; latsec = latval % 60; latval = latval / 60; latmin = latval % 60; latval = latval / 60; latdeg = latval; if (longval < 0) { eastwest = 'W'; longval = -longval; } else eastwest = 'E'; longsecfrac = longval % 1000; longval = longval / 1000; longsec = longval % 60; longval = longval / 60; longmin = longval % 60; longval = longval / 60; longdeg = longval; altfrac = altval % 100; altmeters = (altval / 100) * altsign; if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL) sizestr = error; if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL) hpstr = error; if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL) vpstr = error; sprintf(ascii, "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm", latdeg, latmin, latsec, latsecfrac, northsouth, longdeg, longmin, longsec, longsecfrac, eastwest, altmeters, altfrac, sizestr, hpstr, vpstr); if (sizestr != error) free(sizestr); if (hpstr != error) free(hpstr); if (vpstr != error) free(vpstr); return (ascii); } /* Return the number of DNS hierarchy levels in the name. */ int dn_count_labels(const char *name) { int i, len, count; len = strlen(name); for (i = 0, count = 0; i < len; i++) { /* XXX need to check for \. or use named's nlabels(). */ if (name[i] == '.') count++; } /* don't count initial wildcard */ if (name[0] == '*') if (count) count--; /* don't count the null label for root. */ /* if terminating '.' not found, must adjust */ /* count to include last label */ if (len > 0 && name[len-1] != '.') count++; return (count); } /* * Make dates expressed in seconds-since-Jan-1-1970 easy to read. * SIG records are required to be printed like this, by the Secure DNS RFC. */ char * p_secstodate (u_long secs) { static char output[15]; /* YYYYMMDDHHMMSS and null */ time_t clock = secs; struct tm *time; time = gmtime(&clock); time->tm_year += 1900; time->tm_mon += 1; sprintf(output, "%04d%02d%02d%02d%02d%02d", time->tm_year, time->tm_mon, time->tm_mday, time->tm_hour, time->tm_min, time->tm_sec); return (output); } /* * Weak aliases for applications that use certain private entry points, * and fail to include . */ #undef fp_resstat __weak_reference(__fp_resstat, fp_resstat); #undef p_query __weak_reference(__p_query, p_query); #undef p_fqnname __weak_reference(__p_fqnname, p_fqnname); #undef sym_ston __weak_reference(__sym_ston, sym_ston); #undef sym_ntos __weak_reference(__sym_ntos, sym_ntos); #undef sym_ntop __weak_reference(__sym_ntop, sym_ntop); #undef dn_count_labels __weak_reference(__dn_count_labels, dn_count_labels); #undef p_secstodate __weak_reference(__p_secstodate, p_secstodate);