nameser.h

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	ns_t_srv = 33,		/*%< Server Selection. */
	ns_t_atma = 34,		/*%< ATM Address */
	ns_t_naptr = 35,	/*%< Naming Authority PoinTeR */
	ns_t_kx = 36,		/*%< Key Exchange */
	ns_t_cert = 37,		/*%< Certification record */
	ns_t_a6 = 38,		/*%< IPv6 address (deprecates AAAA) */
	ns_t_dname = 39,	/*%< Non-terminal DNAME (for IPv6) */
	ns_t_sink = 40,		/*%< Kitchen sink (experimentatl) */
	ns_t_opt = 41,		/*%< EDNS0 option (meta-RR) */
	ns_t_apl = 42,		/*%< Address prefix list (RFC3123) */
	ns_t_tkey = 249,	/*%< Transaction key */
	ns_t_tsig = 250,	/*%< Transaction signature. */
	ns_t_ixfr = 251,	/*%< Incremental zone transfer. */
	ns_t_axfr = 252,	/*%< Transfer zone of authority. */
	ns_t_mailb = 253,	/*%< Transfer mailbox records. */
	ns_t_maila = 254,	/*%< Transfer mail agent records. */
	ns_t_any = 255,		/*%< Wildcard match. */
	ns_t_zxfr = 256,	/*%< BIND-specific, nonstandard. */
	ns_t_max = 65536
} ns_type;

/* Exclusively a QTYPE? (not also an RTYPE) */
#define	ns_t_qt_p(t) (ns_t_xfr_p(t) || (t) == ns_t_any || \
		      (t) == ns_t_mailb || (t) == ns_t_maila)
/* Some kind of meta-RR? (not a QTYPE, but also not an RTYPE) */
#define	ns_t_mrr_p(t) ((t) == ns_t_tsig || (t) == ns_t_opt)
/* Exclusively an RTYPE? (not also a QTYPE or a meta-RR) */
#define ns_t_rr_p(t) (!ns_t_qt_p(t) && !ns_t_mrr_p(t))
#define ns_t_udp_p(t) ((t) != ns_t_axfr && (t) != ns_t_zxfr)
#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
		       (t) == ns_t_zxfr)

/*%
 * Values for class field
 */
typedef enum __ns_class {
	ns_c_invalid = 0,	/*%< Cookie. */
	ns_c_in = 1,		/*%< Internet. */
	ns_c_2 = 2,		/*%< unallocated/unsupported. */
	ns_c_chaos = 3,		/*%< MIT Chaos-net. */
	ns_c_hs = 4,		/*%< MIT Hesiod. */
	/* Query class values which do not appear in resource records */
	ns_c_none = 254,	/*%< for prereq. sections in update requests */
	ns_c_any = 255,		/*%< Wildcard match. */
	ns_c_max = 65536
} ns_class;

/* DNSSEC constants. */

typedef enum __ns_key_types {
	ns_kt_rsa = 1,		/*%< key type RSA/MD5 */
	ns_kt_dh  = 2,		/*%< Diffie Hellman */
	ns_kt_dsa = 3,		/*%< Digital Signature Standard (MANDATORY) */
	ns_kt_private = 254	/*%< Private key type starts with OID */
} ns_key_types;

typedef enum __ns_cert_types {
	cert_t_pkix = 1,	/*%< PKIX (X.509v3) */
	cert_t_spki = 2,	/*%< SPKI */
	cert_t_pgp  = 3,	/*%< PGP */
	cert_t_url  = 253,	/*%< URL private type */
	cert_t_oid  = 254	/*%< OID private type */
} ns_cert_types;

/* Flags field of the KEY RR rdata. */
#define	NS_KEY_TYPEMASK		0xC000	/*%< Mask for "type" bits */
#define	NS_KEY_TYPE_AUTH_CONF	0x0000	/*%< Key usable for both */
#define	NS_KEY_TYPE_CONF_ONLY	0x8000	/*%< Key usable for confidentiality */
#define	NS_KEY_TYPE_AUTH_ONLY	0x4000	/*%< Key usable for authentication */
#define	NS_KEY_TYPE_NO_KEY	0xC000	/*%< No key usable for either; no key */
/* The type bits can also be interpreted independently, as single bits: */
#define	NS_KEY_NO_AUTH		0x8000	/*%< Key unusable for authentication */
#define	NS_KEY_NO_CONF		0x4000	/*%< Key unusable for confidentiality */
#define	NS_KEY_RESERVED2	0x2000	/* Security is *mandatory* if bit=0 */
#define	NS_KEY_EXTENDED_FLAGS	0x1000	/*%< reserved - must be zero */
#define	NS_KEY_RESERVED4	0x0800  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED5	0x0400  /*%< reserved - must be zero */
#define	NS_KEY_NAME_TYPE	0x0300	/*%< these bits determine the type */
#define	NS_KEY_NAME_USER	0x0000	/*%< key is assoc. with user */
#define	NS_KEY_NAME_ENTITY	0x0200	/*%< key is assoc. with entity eg host */
#define	NS_KEY_NAME_ZONE	0x0100	/*%< key is zone key */
#define	NS_KEY_NAME_RESERVED	0x0300	/*%< reserved meaning */
#define	NS_KEY_RESERVED8	0x0080  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED9	0x0040  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED10	0x0020  /*%< reserved - must be zero */
#define	NS_KEY_RESERVED11	0x0010  /*%< reserved - must be zero */
#define	NS_KEY_SIGNATORYMASK	0x000F	/*%< key can sign RR's of same name */
#define	NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
				  NS_KEY_RESERVED4 | \
				  NS_KEY_RESERVED5 | \
				  NS_KEY_RESERVED8 | \
				  NS_KEY_RESERVED9 | \
				  NS_KEY_RESERVED10 | \
				  NS_KEY_RESERVED11 )
#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
#define	NS_ALG_MD5RSA		1	/*%< MD5 with RSA */
#define	NS_ALG_DH               2	/*%< Diffie Hellman KEY */
#define	NS_ALG_DSA              3	/*%< DSA KEY */
#define	NS_ALG_DSS              NS_ALG_DSA
#define	NS_ALG_EXPIRE_ONLY	253	/*%< No alg, no security */
#define	NS_ALG_PRIVATE_OID	254	/*%< Key begins with OID giving alg */
/* Protocol values  */
/* value 0 is reserved */
#define NS_KEY_PROT_TLS         1
#define NS_KEY_PROT_EMAIL       2
#define NS_KEY_PROT_DNSSEC      3
#define NS_KEY_PROT_IPSEC       4
#define NS_KEY_PROT_ANY		255

/* Signatures */
#define	NS_MD5RSA_MIN_BITS	 512	/*%< Size of a mod or exp in bits */
#define	NS_MD5RSA_MAX_BITS	4096
	/* Total of binary mod and exp */
#define	NS_MD5RSA_MAX_BYTES	((NS_MD5RSA_MAX_BITS+7/8)*2+3)
	/* Max length of text sig block */
#define	NS_MD5RSA_MAX_BASE64	(((NS_MD5RSA_MAX_BYTES+2)/3)*4)
#define NS_MD5RSA_MIN_SIZE	((NS_MD5RSA_MIN_BITS+7)/8)
#define NS_MD5RSA_MAX_SIZE	((NS_MD5RSA_MAX_BITS+7)/8)

#define NS_DSA_SIG_SIZE         41
#define NS_DSA_MIN_SIZE         213
#define NS_DSA_MAX_BYTES        405

/* Offsets into SIG record rdata to find various values */
#define	NS_SIG_TYPE	0	/*%< Type flags */
#define	NS_SIG_ALG	2	/*%< Algorithm */
#define	NS_SIG_LABELS	3	/*%< How many labels in name */
#define	NS_SIG_OTTL	4	/*%< Original TTL */
#define	NS_SIG_EXPIR	8	/*%< Expiration time */
#define	NS_SIG_SIGNED	12	/*%< Signature time */
#define	NS_SIG_FOOT	16	/*%< Key footprint */
#define	NS_SIG_SIGNER	18	/*%< Domain name of who signed it */
/* How RR types are represented as bit-flags in NXT records */
#define	NS_NXT_BITS 8
#define	NS_NXT_BIT_SET(  n,p) (p[(n)/NS_NXT_BITS] |=  (0x80>>((n)%NS_NXT_BITS)))
#define	NS_NXT_BIT_CLEAR(n,p) (p[(n)/NS_NXT_BITS] &= ~(0x80>>((n)%NS_NXT_BITS)))
#define	NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] &   (0x80>>((n)%NS_NXT_BITS)))
#define NS_NXT_MAX 127

/*%
 * EDNS0 extended flags, host order.
 */
#define NS_OPT_DNSSEC_OK	0x8000U

/*%
 * Inline versions of get/put short/long.  Pointer is advanced.
 */
#define NS_GET16(s, cp) do { \
	register const u_char *t_cp = (const u_char *)(cp); \
	(s) = ((u_int16_t)t_cp[0] << 8) \
	    | ((u_int16_t)t_cp[1]) \
	    ; \
	(cp) += NS_INT16SZ; \
} while (0)

#define NS_GET32(l, cp) do { \
	register const u_char *t_cp = (const 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) += NS_INT32SZ; \
} while (0)

#define NS_PUT16(s, cp) do { \
	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) += NS_INT16SZ; \
} while (0)

#define NS_PUT32(l, cp) do { \
	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) += NS_INT32SZ; \
} while (0)

/*%
 * ANSI C identifier hiding for bind's lib/nameser.
 */
#define	ns_msg_getflag		__ns_msg_getflag
#define ns_get16		__ns_get16
#define ns_get32		__ns_get32
#define ns_put16		__ns_put16
#define ns_put32		__ns_put32
#define ns_initparse		__ns_initparse
#define ns_skiprr		__ns_skiprr
#define ns_parserr		__ns_parserr
#define	ns_sprintrr		__ns_sprintrr
#define	ns_sprintrrf		__ns_sprintrrf
#define	ns_format_ttl		__ns_format_ttl
#define	ns_parse_ttl		__ns_parse_ttl
#define ns_datetosecs		__ns_datetosecs
#define	ns_name_ntol		__ns_name_ntol
#define	ns_name_ntop		__ns_name_ntop
#define	ns_name_pton		__ns_name_pton
#define	ns_name_unpack		__ns_name_unpack
#define	ns_name_pack		__ns_name_pack
#define	ns_name_compress	__ns_name_compress
#define	ns_name_uncompress	__ns_name_uncompress
#define	ns_name_skip		__ns_name_skip
#define	ns_name_rollback	__ns_name_rollback
#define	ns_sign			__ns_sign
#define	ns_sign2		__ns_sign2
#define	ns_sign_tcp		__ns_sign_tcp
#define	ns_sign_tcp2		__ns_sign_tcp2
#define	ns_sign_tcp_init	__ns_sign_tcp_init
#define ns_find_tsig		__ns_find_tsig
#define	ns_verify		__ns_verify
#define	ns_verify_tcp		__ns_verify_tcp
#define	ns_verify_tcp_init	__ns_verify_tcp_init
#define	ns_samedomain		__ns_samedomain
#define	ns_subdomain		__ns_subdomain
#define	ns_makecanon		__ns_makecanon
#define	ns_samename		__ns_samename

__BEGIN_DECLS
int		ns_msg_getflag __P((ns_msg, int));
u_int		ns_get16 __P((const u_char *));
u_long		ns_get32 __P((const u_char *));
void		ns_put16 __P((u_int, u_char *));
void		ns_put32 __P((u_long, u_char *));
int		ns_initparse __P((const u_char *, int, ns_msg *));
int		ns_skiprr __P((const u_char *, const u_char *, ns_sect, int));
int		ns_parserr __P((ns_msg *, ns_sect, int, ns_rr *));
int		ns_sprintrr __P((const ns_msg *, const ns_rr *,
				 const char *, const char *, char *, size_t));
int		ns_sprintrrf __P((const u_char *, size_t, const char *,
				  ns_class, ns_type, u_long, const u_char *,
				  size_t, const char *, const char *,
				  char *, size_t));
int		ns_format_ttl __P((u_long, char *, size_t));
int		ns_parse_ttl __P((const char *, u_long *));
u_int32_t	ns_datetosecs __P((const char *cp, int *errp));
int		ns_name_ntol __P((const u_char *, u_char *, size_t));
int		ns_name_ntop __P((const u_char *, char *, size_t));
int		ns_name_pton __P((const char *, u_char *, size_t));
int		ns_name_unpack __P((const u_char *, const u_char *,
				    const u_char *, u_char *, size_t));
int		ns_name_pack __P((const u_char *, u_char *, int,
				  const u_char **, const u_char **));
int		ns_name_uncompress __P((const u_char *, const u_char *,
					const u_char *, char *, size_t));
int		ns_name_compress __P((const char *, u_char *, size_t,
				      const u_char **, const u_char **));
int		ns_name_skip __P((const u_char **, const u_char *));
void		ns_name_rollback __P((const u_char *, const u_char **,
				      const u_char **));
int		ns_sign __P((u_char *, int *, int, int, void *,
			     const u_char *, int, u_char *, int *, time_t));
int		ns_sign2 __P((u_char *, int *, int, int, void *,
			      const u_char *, int, u_char *, int *, time_t,
			      u_char **, u_char **));
int		ns_sign_tcp __P((u_char *, int *, int, int,
				 ns_tcp_tsig_state *, int));
int		ns_sign_tcp2 __P((u_char *, int *, int, int,
				  ns_tcp_tsig_state *, int,
				  u_char **, u_char **));
int		ns_sign_tcp_init __P((void *, const u_char *, int,
					ns_tcp_tsig_state *));
u_char		*ns_find_tsig __P((u_char *, u_char *));
int		ns_verify __P((u_char *, int *, void *,
			       const u_char *, int, u_char *, int *,
			       time_t *, int));
int		ns_verify_tcp __P((u_char *, int *, ns_tcp_tsig_state *, int));
int		ns_verify_tcp_init __P((void *, const u_char *, int,
					ns_tcp_tsig_state *));
int		ns_samedomain __P((const char *, const char *));
int		ns_subdomain __P((const char *, const char *));
int		ns_makecanon __P((const char *, char *, size_t));
int		ns_samename __P((const char *, const char *));
__END_DECLS

#ifdef BIND_4_COMPAT
#include <arpa/nameser_compat.h>
#endif

#endif /* !_ARPA_NAMESER_H_ */
/*! \file */