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/*++
/* NAME
/* dns_strtype 3
/* SUMMARY
/* name service lookup type codes and printable forms
/* SYNOPSIS
/* #include <dns.h>
/*
/* const char *dns_strtype(code)
/* int code;
/*
/* int dns_type(strval)
/* const char *strval;
/* DESCRIPTION
/* dns_strtype() maps a name service lookup type to printable string.
/* The result is for read-only purposes, and unknown codes share a
/* common string buffer.
/*
/* dns_type() converts a name service lookup string value to a numeric
/* code. A null result means the code was not found. The input can be
/* in lower case, upper case or mixed case.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <string.h>
#ifdef STRCASECMP_IN_STRINGS_H
#include <strings.h>
#endif
/* Utility library. */
#include <vstring.h>
/* DNS library. */
#include "dns.h"
/*
* Mapping from type code to printable string. Some names are possibly not
* defined on every platform, so I have #ifdef-ed them all just to be safe.
*/
struct dns_type_map {
unsigned type;
const char *text;
};
static struct dns_type_map dns_type_map[] = {
#ifdef T_A
T_A, "A",
#endif
#ifdef T_AAAA
T_AAAA, "AAAA",
#endif
#ifdef T_NS
T_NS, "NS",
#endif
#ifdef T_MD
T_MD, "MD",
#endif
#ifdef T_MF
T_MF, "MF",
#endif
#ifdef T_CNAME
T_CNAME, "CNAME",
#endif
#ifdef T_SOA
T_SOA, "SOA",
#endif
#ifdef T_MB
T_MB, "MB",
#endif
#ifdef T_MG
T_MG, "MG",
#endif
#ifdef T_MR
T_MR, "MR",
#endif
#ifdef T_NULL
T_NULL, "NULL",
#endif
#ifdef T_WKS
T_WKS, "WKS",
#endif
#ifdef T_PTR
T_PTR, "PTR",
#endif
#ifdef T_HINFO
T_HINFO, "HINFO",
#endif
#ifdef T_MINFO
T_MINFO, "MINFO",
#endif
#ifdef T_MX
T_MX, "MX",
#endif
#ifdef T_TXT
T_TXT, "TXT",
#endif
#ifdef T_RP
T_RP, "RP",
#endif
#ifdef T_AFSDB
T_AFSDB, "AFSDB",
#endif
#ifdef T_X25
T_X25, "X25",
#endif
#ifdef T_ISDN
T_ISDN, "ISDN",
#endif
#ifdef T_RT
T_RT, "RT",
#endif
#ifdef T_NSAP
T_NSAP, "NSAP",
#endif
#ifdef T_NSAP_PTR
T_NSAP_PTR, "NSAP_PTR",
#endif
#ifdef T_SIG
T_SIG, "SIG",
#endif
#ifdef T_KEY
T_KEY, "KEY",
#endif
#ifdef T_PX
T_PX, "PX",
#endif
#ifdef T_GPOS
T_GPOS, "GPOS",
#endif
#ifdef T_AAAA
T_AAAA, "AAAA",
#endif
#ifdef T_LOC
T_LOC, "LOC",
#endif
#ifdef T_UINFO
T_UINFO, "UINFO",
#endif
#ifdef T_UID
T_UID, "UID",
#endif
#ifdef T_GID
T_GID, "GID",
#endif
#ifdef T_UNSPEC
T_UNSPEC, "UNSPEC",
#endif
#ifdef T_AXFR
T_AXFR, "AXFR",
#endif
#ifdef T_MAILB
T_MAILB, "MAILB",
#endif
#ifdef T_MAILA
T_MAILA, "MAILA",
#endif
#ifdef T_TLSA
T_TLSA, "TLSA",
#endif
#ifdef T_RRSIG
T_RRSIG, "RRSIG",
#endif
#ifdef T_DNAME
T_DNAME, "DNAME",
#endif
#ifdef T_ANY
T_ANY, "ANY",
#endif
};
/* dns_strtype - translate DNS query type to string */
const char *dns_strtype(unsigned type)
{
static VSTRING *unknown = 0;
unsigned i;
for (i = 0; i < sizeof(dns_type_map) / sizeof(dns_type_map[0]); i++)
if (dns_type_map[i].type == type)
return (dns_type_map[i].text);
if (unknown == 0)
unknown = vstring_alloc(sizeof("Unknown type XXXXXX"));
vstring_sprintf(unknown, "Unknown type %u", type);
return (vstring_str(unknown));
}
/* dns_type - translate string to DNS query type */
unsigned dns_type(const char *text)
{
unsigned i;
for (i = 0; i < sizeof(dns_type_map) / sizeof(dns_type_map[0]); i++)
if (strcasecmp(dns_type_map[i].text, text) == 0)
return (dns_type_map[i].type);
return (0);
}
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