--- /dev/null
+/*
+ * ++Copyright++ 1983, 1989, 1993
+ * -
+ * 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.
+ * -
+ * 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--
+ */
+
+/*
+ * @(#)nameser.h 8.1 (Berkeley) 6/2/93
+ * $Id: nameser.h,v 8.3 1995/08/21 01:27:12 vixie Exp
+ */
+
+#ifndef _NAMESER_H_
+#define _NAMESER_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 */
+#define HFIXEDSZ 12 /* #/bytes of fixed data in header */
+#define QFIXEDSZ 4 /* #/bytes of fixed data in query */
+#define RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
+#define INT32SZ 4 /* for systems without 32-bit ints */
+#define INT16SZ 2 /* for systems without 16-bit ints */
+#define INADDRSZ 4 /* for sizeof(struct inaddr) != 4 */
+
+/*
+ * 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 */
+#define NS_NOTIFY_OP 0x4 /* notify secondary of SOA change */
+#ifdef ALLOW_UPDATES
+ /* 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 */
+#endif
+
+/*
+ * 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 */
+#ifdef ALLOW_UPDATES
+ /* non standard */
+# define NOCHANGE 0xf /* update failed to change db */
+#endif
+
+/*
+ * 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 /* canonical 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_X25 19 /* X_25 calling address */
+#define T_ISDN 20 /* ISDN calling address */
+#define T_RT 21 /* router */
+#define T_NSAP 22 /* NSAP address */
+#define T_NSAP_PTR 23 /* reverse NSAP lookup (deprecated) */
+#define T_SIG 24 /* security signature */
+#define T_KEY 25 /* security key */
+#define T_PX 26 /* X.400 mail mapping */
+#define T_GPOS 27 /* geographical position (withdrawn) */
+#define T_AAAA 28 /* IP6 Address */
+#define T_LOC 29 /* Location Information */
+ /* 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)
+
+/*
+ * 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 {
+ unsigned id :16; /* query identification number */
+#if BYTE_ORDER == BIG_ENDIAN
+ /* fields in third byte */
+ unsigned qr: 1; /* response flag */
+ unsigned opcode: 4; /* purpose of message */
+ unsigned aa: 1; /* authoritive answer */
+ unsigned tc: 1; /* truncated message */
+ unsigned rd: 1; /* recursion desired */
+ /* fields in fourth byte */
+ unsigned ra: 1; /* recursion available */
+ unsigned pr:1; /* primary server required (non standard) */
+ unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */
+ unsigned rcode :4; /* response code */
+#endif
+#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
+ /* fields in third byte */
+ unsigned rd :1; /* recursion desired */
+ unsigned tc :1; /* truncated message */
+ unsigned aa :1; /* authoritive answer */
+ unsigned opcode :4; /* purpose of message */
+ unsigned qr :1; /* response flag */
+ /* fields in fourth byte */
+ unsigned rcode :4; /* response code */
+ unsigned unused :2; /* unused bits (MBZ as of 4.9.3a3) */
+ unsigned pr:1; /* primary server required (non standard) */
+ unsigned ra :1; /* recursion available */
+#endif
+ /* remaining bytes */
+ unsigned qdcount :16; /* number of question entries */
+ unsigned ancount :16; /* number of answer entries */
+ unsigned nscount :16; /* number of authority entries */
+ unsigned arcount :16; /* 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 */
+};
+
+#endif /* !_NAMESER_H_ */
projects / thirdparty / dhcp.git / commitdiff
