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authorRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-24 09:57:34 +0000
committerRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-24 09:57:34 +0000
commit59deaec541ae8baaa58daf6c5a2196ea7de180c3 (patch)
tree09f0848dc45f73d9ec271a31af87eaf035d17dd2 /include/arpa/nameser.h
parent628b2ef68cdc04f2b5d5ec381ab5bc16f16bb7f6 (diff)
downloadsrc-59deaec541ae8baaa58daf6c5a2196ea7de180c3.tar.gz
src-59deaec541ae8baaa58daf6c5a2196ea7de180c3.zip
BSD 4.4 Lite Include Sources
Notes
Notes: svn path=/head/; revision=1539
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+/*
+ * Copyright (c) 1983, 1989, 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.
+ *
+ * @(#)nameser.h 8.2 (Berkeley) 2/16/94
+ * -
+ * 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--
+ */
+
+#ifndef _NAMESER_H_
+#define _NAMESER_H_
+
+#include <sys/types.h>
+
+/*
+ * Define constants based on rfc883
+ */
+#define PACKETSZ 512 /* maximum packet size */
+#define MAXDNAME 256 /* maximum domain name */
+#define MAXCDNAME 255 /* maximum compressed domain name */
+#define MAXLABEL 63 /* maximum length of domain label */
+ /* Number of bytes of fixed size data in query structure */
+#define QFIXEDSZ 4
+ /* number of bytes of fixed size data in resource record */
+#define RRFIXEDSZ 10
+
+/*
+ * Internet nameserver port number
+ */
+#define NAMESERVER_PORT 53
+
+/*
+ * Currently defined opcodes
+ */
+#define QUERY 0x0 /* standard query */
+#define IQUERY 0x1 /* inverse query */
+#define STATUS 0x2 /* nameserver status query */
+/*#define xxx 0x3 /* 0x3 reserved */
+ /* non standard - supports ALLOW_UPDATES stuff from Mike Schwartz */
+#define UPDATEA 0x9 /* add resource record */
+#define UPDATED 0xa /* delete a specific resource record */
+#define UPDATEDA 0xb /* delete all named resource record */
+#define UPDATEM 0xc /* modify a specific resource record */
+#define UPDATEMA 0xd /* modify all named resource record */
+
+#define ZONEINIT 0xe /* initial zone transfer */
+#define ZONEREF 0xf /* incremental zone referesh */
+
+/*
+ * Currently defined response codes
+ */
+#define NOERROR 0 /* no error */
+#define FORMERR 1 /* format error */
+#define SERVFAIL 2 /* server failure */
+#define NXDOMAIN 3 /* non existent domain */
+#define NOTIMP 4 /* not implemented */
+#define REFUSED 5 /* query refused */
+ /* non standard */
+#define NOCHANGE 0xf /* update failed to change db */
+
+/*
+ * Type values for resources and queries
+ */
+#define T_A 1 /* host address */
+#define T_NS 2 /* authoritative server */
+#define T_MD 3 /* mail destination */
+#define T_MF 4 /* mail forwarder */
+#define T_CNAME 5 /* connonical name */
+#define T_SOA 6 /* start of authority zone */
+#define T_MB 7 /* mailbox domain name */
+#define T_MG 8 /* mail group member */
+#define T_MR 9 /* mail rename name */
+#define T_NULL 10 /* null resource record */
+#define T_WKS 11 /* well known service */
+#define T_PTR 12 /* domain name pointer */
+#define T_HINFO 13 /* host information */
+#define T_MINFO 14 /* mailbox information */
+#define T_MX 15 /* mail routing information */
+#define T_TXT 16 /* text strings */
+#define T_RP 17 /* responsible person */
+#define T_AFSDB 18 /* AFS cell database */
+#define T_NSAP 22 /* NSAP address */
+#define T_NSAP_PTR 23 /* reverse lookup for NSAP */
+ /* non standard */
+#define T_UINFO 100 /* user (finger) information */
+#define T_UID 101 /* user ID */
+#define T_GID 102 /* group ID */
+#define T_UNSPEC 103 /* Unspecified format (binary data) */
+ /* Query type values which do not appear in resource records */
+#define T_AXFR 252 /* transfer zone of authority */
+#define T_MAILB 253 /* transfer mailbox records */
+#define T_MAILA 254 /* transfer mail agent records */
+#define T_ANY 255 /* wildcard match */
+
+/*
+ * Values for class field
+ */
+
+#define C_IN 1 /* the arpa internet */
+#define C_CHAOS 3 /* for chaos net (MIT) */
+#define C_HS 4 /* for Hesiod name server (MIT) (XXX) */
+ /* Query class values which do not appear in resource records */
+#define C_ANY 255 /* wildcard match */
+
+/*
+ * Status return codes for T_UNSPEC conversion routines
+ */
+#define CONV_SUCCESS 0
+#define CONV_OVERFLOW -1
+#define CONV_BADFMT -2
+#define CONV_BADCKSUM -3
+#define CONV_BADBUFLEN -4
+
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */
+#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
+#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/
+
+#if defined(vax) || defined(ns32000) || defined(sun386) || defined(i386) || \
+ defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
+ defined(__alpha__) || defined(__alpha)
+#define BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
+ defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
+ defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || \
+ defined(apollo) || defined(hp9000) || defined(hp9000s300) || \
+ defined (BIT_ZERO_ON_LEFT)
+#define BYTE_ORDER BIG_ENDIAN
+#endif
+#endif /* BYTE_ORDER */
+
+#if !defined(BYTE_ORDER) || \
+ (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \
+ BYTE_ORDER != PDP_ENDIAN)
+ /* you must determine what the correct bit order is for
+ * your compiler - the next line is an intentional error
+ * which will force your compiles to bomb until you fix
+ * the above macros.
+ */
+ #error "Undefined or invalid BYTE_ORDER";
+#endif
+
+/*
+ * Structure for query header. The order of the fields is machine- and
+ * compiler-dependent, depending on the byte/bit order and the layout
+ * of bit fields. We use bit fields only in int variables, as this
+ * is all ANSI requires. This requires a somewhat confusing rearrangement.
+ */
+
+typedef struct {
+ u_int16_t id; /* query identification number */
+#if BYTE_ORDER == BIG_ENDIAN
+ /* fields in third byte */
+ u_int qr:1; /* response flag */
+ u_int opcode:4; /* purpose of message */
+ u_int aa:1; /* authoritive answer */
+ u_int tc:1; /* truncated message */
+ u_int rd:1; /* recursion desired */
+ /* fields in fourth byte */
+ u_int ra:1; /* recursion available */
+ u_int pr:1; /* primary server required (non standard) */
+ u_int unused:2; /* unused bits */
+ u_int rcode:4; /* response code */
+#endif
+#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
+ /* fields in third byte */
+ u_int rd:1; /* recursion desired */
+ u_int tc:1; /* truncated message */
+ u_int aa:1; /* authoritive answer */
+ u_int opcode:4; /* purpose of message */
+ u_int qr:1; /* response flag */
+ /* fields in fourth byte */
+ u_int rcode:4; /* response code */
+ u_int unused:2; /* unused bits */
+ u_int pr:1; /* primary server required (non standard) */
+ u_int ra:1; /* recursion available */
+#endif
+ /* remaining bytes */
+ u_int16_t qdcount; /* number of question entries */
+ u_int16_t ancount; /* number of answer entries */
+ u_int16_t nscount; /* number of authority entries */
+ u_int16_t arcount; /* number of resource entries */
+} HEADER;
+
+/*
+ * Defines for handling compressed domain names
+ */
+#define INDIR_MASK 0xc0
+
+/*
+ * Structure for passing resource records around.
+ */
+struct rrec {
+ int16_t r_zone; /* zone number */
+ int16_t r_class; /* class number */
+ int16_t r_type; /* type number */
+ u_int32_t r_ttl; /* time to live */
+ int r_size; /* size of data area */
+ char *r_data; /* pointer to data */
+};
+
+extern u_int16_t _getshort();
+extern u_int32_t _getlong();
+
+/*
+ * Inline versions of get/put short/long. Pointer is advanced.
+ * We also assume that a "u_int16_t" holds 2 "chars"
+ * and that a "u_int32_t" holds 4 "chars".
+ *
+ * These macros demonstrate the property of C whereby it can be
+ * portable or it can be elegant but never both.
+ */
+#define GETSHORT(s, cp) { \
+ register u_char *t_cp = (u_char *)(cp); \
+ (s) = ((u_int16_t)t_cp[0] << 8) | (u_int16_t)t_cp[1]; \
+ (cp) += 2; \
+}
+
+#define GETLONG(l, cp) { \
+ register u_char *t_cp = (u_char *)(cp); \
+ (l) = (((u_int32_t)t_cp[0]) << 24) \
+ | (((u_int32_t)t_cp[1]) << 16) \
+ | (((u_int32_t)t_cp[2]) << 8) \
+ | (((u_int32_t)t_cp[3])); \
+ (cp) += 4; \
+}
+
+#define PUTSHORT(s, cp) { \
+ register u_int16_t t_s = (u_int16_t)(s); \
+ register u_char *t_cp = (u_char *)(cp); \
+ *t_cp++ = t_s >> 8; \
+ *t_cp = t_s; \
+ (cp) += 2; \
+}
+
+/*
+ * Warning: PUTLONG --no-longer-- destroys its first argument. if you
+ * were depending on this "feature", you will lose.
+ */
+#define PUTLONG(l, cp) { \
+ register u_int32_t t_l = (u_int32_t)(l); \
+ register u_char *t_cp = (u_char *)(cp); \
+ *t_cp++ = t_l >> 24; \
+ *t_cp++ = t_l >> 16; \
+ *t_cp++ = t_l >> 8; \
+ *t_cp = t_l; \
+ (cp) += 4; \
+}
+
+#endif /* !_NAMESER_H_ */