diff options
Diffstat (limited to 'lib/libc/net/res_debug.c')
| -rw-r--r-- | lib/libc/net/res_debug.c | 1208 |
1 files changed, 1208 insertions, 0 deletions
diff --git a/lib/libc/net/res_debug.c b/lib/libc/net/res_debug.c new file mode 100644 index 0000000..8af5287 --- /dev/null +++ b/lib/libc/net/res_debug.c @@ -0,0 +1,1208 @@ +/* + * ++Copyright++ 1985, 1990, 1993 + * - + * Copyright (c) 1985, 1990, 1993 + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + * - + * 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. + * - + * --Copyright-- + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; +static char rcsid[] = "$Id: res_debug.c,v 8.12 1996/08/05 08:31:35 vixie Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include "res_config.h" +#include <arpa/nameser.h> + +#include <stdio.h> +#include <netdb.h> +#include <resolv.h> +#include <ctype.h> +#include <string.h> + + +extern const char *_res_opcodes[]; +extern const char *_res_resultcodes[]; + +/* XXX: we should use getservbyport() instead. */ +static const char * +dewks(wks) + int wks; +{ + static char nbuf[20]; + + switch (wks) { + case 5: return "rje"; + case 7: return "echo"; + case 9: return "discard"; + case 11: return "systat"; + case 13: return "daytime"; + case 15: return "netstat"; + case 17: return "qotd"; + case 19: return "chargen"; + case 20: return "ftp-data"; + case 21: return "ftp"; + case 23: return "telnet"; + case 25: return "smtp"; + case 37: return "time"; + case 39: return "rlp"; + case 42: return "name"; + case 43: return "whois"; + case 53: return "domain"; + case 57: return "apts"; + case 59: return "apfs"; + case 67: return "bootps"; + case 68: return "bootpc"; + case 69: return "tftp"; + case 77: return "rje"; + case 79: return "finger"; + case 87: return "link"; + case 95: return "supdup"; + case 100: return "newacct"; + case 101: return "hostnames"; + case 102: return "iso-tsap"; + case 103: return "x400"; + case 104: return "x400-snd"; + case 105: return "csnet-ns"; + case 109: return "pop-2"; + case 111: return "sunrpc"; + case 113: return "auth"; + case 115: return "sftp"; + case 117: return "uucp-path"; + case 119: return "nntp"; + case 121: return "erpc"; + case 123: return "ntp"; + case 133: return "statsrv"; + case 136: return "profile"; + case 144: return "NeWS"; + case 161: return "snmp"; + case 162: return "snmp-trap"; + case 170: return "print-srv"; + default: (void) sprintf(nbuf, "%d", wks); return (nbuf); + } +} + +/* XXX: we should use getprotobynumber() instead. */ +static const char * +deproto(protonum) + int protonum; +{ + static char nbuf[20]; + + switch (protonum) { + case 1: return "icmp"; + case 2: return "igmp"; + case 3: return "ggp"; + case 5: return "st"; + case 6: return "tcp"; + case 7: return "ucl"; + case 8: return "egp"; + case 9: return "igp"; + case 11: return "nvp-II"; + case 12: return "pup"; + case 16: return "chaos"; + case 17: return "udp"; + default: (void) sprintf(nbuf, "%d", protonum); return (nbuf); + } +} + +static const u_char * +do_rrset(msg, len, cp, cnt, pflag, file, hs) + int cnt, pflag, len; + const u_char *cp, *msg; + const char *hs; + FILE *file; +{ + int n; + int sflag; + + /* + * Print answer records. + */ + sflag = (_res.pfcode & pflag); + if ( (n = ntohs(cnt)) ) { + if ((!_res.pfcode) || + ((sflag) && (_res.pfcode & RES_PRF_HEAD1))) + fprintf(file, hs); + while (--n >= 0) { + if ((!_res.pfcode) || sflag) { + cp = p_rr(cp, msg, file); + } else { + unsigned int dlen; + cp += __dn_skipname(cp, cp + MAXCDNAME); + cp += INT16SZ; + cp += INT16SZ; + cp += INT32SZ; + dlen = _getshort((u_char*)cp); + cp += INT16SZ; + cp += dlen; + } + if ((cp - msg) > len) + return (NULL); + } + if ((!_res.pfcode) || + ((sflag) && (_res.pfcode & RES_PRF_HEAD1))) + putc('\n', file); + } + return (cp); +} + +void +__p_query(msg) + const u_char *msg; +{ + __fp_query(msg, stdout); +} + +/* + * Print the current options. + * This is intended to be primarily a debugging routine. + */ +void +__fp_resstat(statp, file) + struct __res_state *statp; + FILE *file; +{ + register 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); +} + +/* + * Print the contents of a query. + * This is intended to be primarily a debugging routine. + */ +void +__fp_nquery(msg, len, file) + const u_char *msg; + int len; + FILE *file; +{ + register const u_char *cp, *endMark; + register const HEADER *hp; + register int n; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return; + +#define TruncTest(x) if (x >= endMark) goto trunc +#define ErrorTest(x) if (x == NULL) goto error + + /* + * Print header fields. + */ + hp = (HEADER *)msg; + cp = msg + HFIXEDSZ; + endMark = cp + len; + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX) || hp->rcode) { + fprintf(file, ";; ->>HEADER<<- opcode: %s, status: %s, id: %d", + _res_opcodes[hp->opcode], + _res_resultcodes[hp->rcode], + ntohs(hp->id)); + putc('\n', file); + } + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX)) + putc(';', file); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) { + fprintf(file, "; flags:"); + if (hp->qr) + fprintf(file, " qr"); + if (hp->aa) + fprintf(file, " aa"); + if (hp->tc) + fprintf(file, " tc"); + if (hp->rd) + fprintf(file, " rd"); + if (hp->ra) + fprintf(file, " ra"); + } + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD1)) { + fprintf(file, "; Ques: %d", ntohs(hp->qdcount)); + fprintf(file, ", Ans: %d", ntohs(hp->ancount)); + fprintf(file, ", Auth: %d", ntohs(hp->nscount)); + fprintf(file, ", Addit: %d", ntohs(hp->arcount)); + } + if ((!_res.pfcode) || (_res.pfcode & + (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { + putc('\n',file); + } + /* + * Print question records. + */ + if ( (n = ntohs(hp->qdcount)) ) { + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + fprintf(file, ";; QUESTIONS:\n"); + while (--n >= 0) { + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + fprintf(file, ";;\t"); + TruncTest(cp); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + cp = p_cdnname(cp, msg, len, file); + else { + int n; + char name[MAXDNAME]; + + if ((n = dn_expand(msg, msg+len, cp, name, + sizeof name)) < 0) + cp = NULL; + else + cp += n; + } + ErrorTest(cp); + TruncTest(cp); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + fprintf(file, ", type = %s", + __p_type(_getshort((u_char*)cp))); + cp += INT16SZ; + TruncTest(cp); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + fprintf(file, ", class = %s\n", + __p_class(_getshort((u_char*)cp))); + cp += INT16SZ; + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES)) + putc('\n', file); + } + } + /* + * Print authoritative answer records + */ + TruncTest(cp); + cp = do_rrset(msg, len, cp, hp->ancount, RES_PRF_ANS, file, + ";; ANSWERS:\n"); + ErrorTest(cp); + + /* + * print name server records + */ + TruncTest(cp); + cp = do_rrset(msg, len, cp, hp->nscount, RES_PRF_AUTH, file, + ";; AUTHORITY RECORDS:\n"); + ErrorTest(cp); + + TruncTest(cp); + /* + * print additional records + */ + cp = do_rrset(msg, len, cp, hp->arcount, RES_PRF_ADD, file, + ";; ADDITIONAL RECORDS:\n"); + ErrorTest(cp); + return; + trunc: + fprintf(file, "\n;; ...truncated\n"); + return; + error: + fprintf(file, "\n;; ...malformed\n"); +} + +void +__fp_query(msg, file) + const u_char *msg; + FILE *file; +{ + fp_nquery(msg, PACKETSZ, file); +} + +const u_char * +__p_cdnname(cp, msg, len, file) + const u_char *cp, *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(cp, msg, file) + const u_char *cp, *msg; + FILE *file; +{ + return (p_cdnname(cp, msg, PACKETSZ, file)); +} + +/* XXX: the rest of these functions need to become length-limited, too. (vix) + */ + +const u_char * +__p_fqname(cp, msg, file) + const u_char *cp, *msg; + FILE *file; +{ + char name[MAXDNAME]; + int n; + + if ((n = dn_expand(msg, cp + MAXCDNAME, cp, name, sizeof name)) < 0) + return (NULL); + if (name[0] == '\0') { + putc('.', file); + } else { + fputs(name, file); + if (name[strlen(name) - 1] != '.') + putc('.', file); + } + return (cp + n); +} + +/* + * Print resource record fields in human readable form. + */ +const u_char * +__p_rr(cp, msg, file) + const u_char *cp, *msg; + FILE *file; +{ + int type, class, dlen, n, c; + struct in_addr inaddr; + const u_char *cp1, *cp2; + u_int32_t tmpttl, t; + int lcnt; + + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (NULL); + } + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); /* compression error */ + type = _getshort((u_char*)cp); + cp += INT16SZ; + class = _getshort((u_char*)cp); + cp += INT16SZ; + tmpttl = _getlong((u_char*)cp); + cp += INT32SZ; + dlen = _getshort((u_char*)cp); + cp += INT16SZ; + cp1 = cp; + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_TTLID)) + fprintf(file, "\t%lu", (u_long)tmpttl); + if ((!_res.pfcode) || (_res.pfcode & RES_PRF_CLASS)) + fprintf(file, "\t%s", __p_class(class)); + fprintf(file, "\t%s", __p_type(type)); + /* + * Print type specific data, if appropriate + */ + switch (type) { + case T_A: + switch (class) { + case C_IN: + case C_HS: + bcopy(cp, (char *)&inaddr, INADDRSZ); + if (dlen == 4) { + fprintf(file, "\t%s", inet_ntoa(inaddr)); + cp += dlen; + } else if (dlen == 7) { + char *address; + u_char protocol; + u_short port; + + address = inet_ntoa(inaddr); + cp += INADDRSZ; + protocol = *(u_char*)cp; + cp += sizeof(u_char); + port = _getshort((u_char*)cp); + cp += INT16SZ; + fprintf(file, "\t%s\t; proto %d, port %d", + address, protocol, port); + } + break; + default: + cp += dlen; + } + break; + case T_CNAME: + case T_MB: + case T_MG: + case T_MR: + case T_NS: + case T_PTR: + putc('\t', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + break; + + case T_HINFO: + case T_ISDN: + (void) fputs("\t\"", file); + cp2 = cp + dlen; + if ((n = (unsigned char) *cp++) != 0) { + for (c = n; c > 0 && cp < cp2; c--) { + if (strchr("\n\"\\", *cp)) + (void) putc('\\', file); + (void) putc(*cp++, file); + } + putc('"', file); + } + if (cp < cp2 && (n = (unsigned char) *cp++) != 0) { + (void) fputs ("\t\"", file); + for (c = n; c > 0 && cp < cp2; c--) { + if (strchr("\n\"\\", *cp)) + (void) putc('\\', file); + (void) putc(*cp++, file); + } + putc('"', file); + } else if (type == T_HINFO) { + (void) fputs("\"?\"", file); + fprintf(file, "\n;; *** Warning *** OS-type missing"); + } + break; + + case T_SOA: + putc('\t', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + putc(' ', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + fputs(" (\n", file); + t = _getlong((u_char*)cp); cp += INT32SZ; + fprintf(file, "\t\t\t%lu\t; serial\n", (u_long)t); + t = _getlong((u_char*)cp); cp += INT32SZ; + fprintf(file, "\t\t\t%lu\t; refresh (%s)\n", + (u_long)t, __p_time(t)); + t = _getlong((u_char*)cp); cp += INT32SZ; + fprintf(file, "\t\t\t%lu\t; retry (%s)\n", + (u_long)t, __p_time(t)); + t = _getlong((u_char*)cp); cp += INT32SZ; + fprintf(file, "\t\t\t%lu\t; expire (%s)\n", + (u_long)t, __p_time(t)); + t = _getlong((u_char*)cp); cp += INT32SZ; + fprintf(file, "\t\t\t%lu )\t; minimum (%s)", + (u_long)t, __p_time(t)); + break; + + case T_MX: + case T_AFSDB: + case T_RT: + fprintf(file, "\t%d ", _getshort((u_char*)cp)); + cp += INT16SZ; + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + break; + + case T_PX: + fprintf(file, "\t%d ", _getshort((u_char*)cp)); + cp += INT16SZ; + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + putc(' ', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + break; + + case T_TXT: + case T_X25: + (void) fputs("\t\"", file); + cp2 = cp1 + dlen; + while (cp < cp2) { + if (n = (unsigned char) *cp++) { + for (c = n; c > 0 && cp < cp2; c--) { + if (strchr("\n\"\\", *cp)) + (void) putc('\\', file); + (void) putc(*cp++, file); + } + } + } + putc('"', file); + break; + + case T_NSAP: + (void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL)); + cp += dlen; + break; + + case T_AAAA: { + char t[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"]; + + fprintf(file, "\t%s\n", inet_ntop(AF_INET6, cp, t, sizeof t)); + cp += dlen; + break; + } + + case T_LOC: { + char t[255]; + + (void) fprintf(file, "\t%s\n", loc_ntoa(cp, t)); + cp += dlen; + break; + } + + case T_MINFO: + case T_RP: + putc('\t', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + putc(' ', file); + if ((cp = p_fqname(cp, msg, file)) == NULL) + return (NULL); + break; + + case T_UINFO: + putc('\t', file); + fputs((char *)cp, file); + cp += dlen; + break; + + case T_UID: + case T_GID: + if (dlen == 4) { + fprintf(file, "\t%u", _getlong((u_char*)cp)); + cp += INT32SZ; + } + break; + + case T_WKS: + if (dlen < INT32SZ + 1) + break; + bcopy(cp, (char *)&inaddr, INADDRSZ); + cp += INT32SZ; + fprintf(file, "\t%s %s ( ", + inet_ntoa(inaddr), + deproto((int) *cp)); + cp += sizeof(u_char); + n = 0; + lcnt = 0; + while (cp < cp1 + dlen) { + c = *cp++; + do { + if (c & 0200) { + if (lcnt == 0) { + fputs("\n\t\t\t", file); + lcnt = 5; + } + fputs(dewks(n), file); + putc(' ', file); + lcnt--; + } + c <<= 1; + } while (++n & 07); + } + putc(')', file); + break; + +#ifdef ALLOW_T_UNSPEC + case T_UNSPEC: + { + int NumBytes = 8; + u_char *DataPtr; + int i; + + if (dlen < NumBytes) NumBytes = dlen; + fprintf(file, "\tFirst %d bytes of hex data:", + NumBytes); + for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++) + fprintf(file, " %x", *DataPtr); + cp += dlen; + } + break; +#endif /* ALLOW_T_UNSPEC */ + + default: + fprintf(file, "\t?%d?", type); + cp += dlen; + } +#if 0 + fprintf(file, "\t; dlen=%d, ttl %s\n", dlen, __p_time(tmpttl)); +#else + putc('\n', file); +#endif + if (cp - cp1 != dlen) { + fprintf(file, ";; packet size error (found %d, dlen was %d)\n", + cp - cp1, dlen); + cp = NULL; + } + return (cp); +} + +/* + * Return a string for the type + */ +const char * +__p_type(type) + int type; +{ + static char nbuf[20]; + + switch (type) { + case T_A: return "A"; + case T_NS: return "NS"; + case T_CNAME: return "CNAME"; + case T_SOA: return "SOA"; + case T_MB: return "MB"; + case T_MG: return "MG"; + case T_MR: return "MR"; + case T_NULL: return "NULL"; + case T_WKS: return "WKS"; + case T_PTR: return "PTR"; + case T_HINFO: return "HINFO"; + case T_MINFO: return "MINFO"; + case T_MX: return "MX"; + case T_TXT: return "TXT"; + case T_RP: return "RP"; + case T_AFSDB: return "AFSDB"; + case T_X25: return "X25"; + case T_ISDN: return "ISDN"; + case T_RT: return "RT"; + case T_NSAP: return "NSAP"; + case T_NSAP_PTR: return "NSAP_PTR"; + case T_SIG: return "SIG"; + case T_KEY: return "KEY"; + case T_PX: return "PX"; + case T_GPOS: return "GPOS"; + case T_AAAA: return "AAAA"; + case T_LOC: return "LOC"; + case T_AXFR: return "AXFR"; + case T_MAILB: return "MAILB"; + case T_MAILA: return "MAILA"; + case T_ANY: return "ANY"; + case T_UINFO: return "UINFO"; + case T_UID: return "UID"; + case T_GID: return "GID"; +#ifdef ALLOW_T_UNSPEC + case T_UNSPEC: return "UNSPEC"; +#endif /* ALLOW_T_UNSPEC */ + default: (void)sprintf(nbuf, "%d", type); return (nbuf); + } +} + +/* + * Return a mnemonic for class + */ +const char * +__p_class(class) + int class; +{ + static char nbuf[20]; + + switch (class) { + case C_IN: return "IN"; + case C_HS: return "HS"; + case C_ANY: return "ANY"; + default: (void)sprintf(nbuf, "%d", class); return (nbuf); + } +} + +/* + * Return a mnemonic for an option + */ +const char * +__p_option(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"; + default: sprintf(nbuf, "?0x%lx?", (u_long)option); + return (nbuf); + } +} + +/* + * Return a mnemonic for a time to live + */ +char * +__p_time(value) + u_int32_t value; +{ + static char nbuf[40]; + int secs, mins, hours, days; + register char *p; + + if (value == 0) { + strcpy(nbuf, "0 secs"); + return (nbuf); + } + + secs = value % 60; + value /= 60; + mins = value % 60; + value /= 60; + hours = value % 24; + value /= 24; + days = value; + value = 0; + +#define PLURALIZE(x) x, (x == 1) ? "" : "s" + p = nbuf; + if (days) { + (void)sprintf(p, "%d day%s", PLURALIZE(days)); + while (*++p); + } + if (hours) { + if (days) + *p++ = ' '; + (void)sprintf(p, "%d hour%s", PLURALIZE(hours)); + while (*++p); + } + if (mins) { + if (days || hours) + *p++ = ' '; + (void)sprintf(p, "%d min%s", PLURALIZE(mins)); + while (*++p); + } + if (secs || ! (days || hours || mins)) { + if (days || hours || mins) + *p++ = ' '; + (void)sprintf(p, "%d sec%s", PLURALIZE(secs)); + } + 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(prec) + 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]; + + (void) 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(strptr) + char **strptr; +{ + unsigned int mval = 0, cmval = 0; + u_int8_t retval = 0; + register char *cp; + register int exponent; + register int mantissa; + + cp = *strptr; + + while (isdigit(*cp)) + mval = mval * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* centimeters */ + cp++; + if (isdigit(*cp)) { + cmval = (*cp++ - '0') * 10; + if (isdigit(*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(latlonstrptr,which) + char **latlonstrptr; + int *which; +{ + register char *cp; + u_int32_t retval; + int deg = 0, min = 0, secs = 0, secsfrac = 0; + + cp = *latlonstrptr; + + while (isdigit(*cp)) + deg = deg * 10 + (*cp++ - '0'); + + while (isspace(*cp)) + cp++; + + if (!(isdigit(*cp))) + goto fndhemi; + + while (isdigit(*cp)) + min = min * 10 + (*cp++ - '0'); + + while (isspace(*cp)) + cp++; + + if (!(isdigit(*cp))) + goto fndhemi; + + while (isdigit(*cp)) + secs = secs * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* decimal seconds */ + cp++; + if (isdigit(*cp)) { + secsfrac = (*cp++ - '0') * 100; + if (isdigit(*cp)) { + secsfrac += (*cp++ - '0') * 10; + if (isdigit(*cp)) { + secsfrac += (*cp++ - '0'); + } + } + } + } + + while (!isspace(*cp)) /* if any trailing garbage */ + cp++; + + while (isspace(*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(*cp)) /* if any trailing garbage */ + cp++; + + while (isspace(*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(ascii, binary) + 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(*cp)) + altmeters = altmeters * 10 + (*cp++ - '0'); + + if (*cp == '.') { /* decimal meters */ + cp++; + if (isdigit(*cp)) { + altfrac = (*cp++ - '0') * 10; + if (isdigit(*cp)) { + altfrac += (*cp++ - '0'); + } + } + } + + alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); + + while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace(*cp) && (cp < maxcp)) + cp++; + + if (cp >= maxcp) + goto defaults; + + siz = precsize_aton(&cp); + + while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace(*cp) && (cp < maxcp)) + cp++; + + if (cp >= maxcp) + goto defaults; + + hp = precsize_aton(&cp); + + while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ + cp++; + + while (isspace(*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. */ +char * +loc_ntoa(binary, ascii) + const u_char *binary; + char *ascii; +{ + static char *error = "?"; + register const u_char *cp = binary; + + int latdeg, latmin, latsec, latsecfrac; + int longdeg, longmin, longsec, longsecfrac; + char northsouth, eastwest; + int altmeters, altfrac, altsign; + + const int 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); +} |
