minix/external/bsd/bind/dist/lib/isc/include/isc/hex.h
David van Moolenbroek 00b67f09dd Import NetBSD named(8)
Also known as ISC bind.  This import adds utilities such as host(1),
dig(1), and nslookup(1), as well as many other tools and libraries.

Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
2017-03-21 22:00:06 +00:00

101 lines
2.9 KiB
C

/* $NetBSD: hex.h,v 1.4 2014/12/10 04:38:00 christos Exp $ */
/*
* Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or 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.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
/* Id: hex.h,v 1.13 2008/09/25 04:02:39 tbox Exp */
#ifndef ISC_HEX_H
#define ISC_HEX_H 1
/*! \file isc/hex.h */
#include <isc/lang.h>
#include <isc/types.h>
ISC_LANG_BEGINDECLS
/***
*** Functions
***/
isc_result_t
isc_hex_totext(isc_region_t *source, int wordlength,
const char *wordbreak, isc_buffer_t *target);
/*!<
* \brief Convert data into hex encoded text.
*
* Notes:
*\li The hex encoded text in 'target' will be divided into
* words of at most 'wordlength' characters, separated by
* the 'wordbreak' string. No parentheses will surround
* the text.
*
* Requires:
*\li 'source' is a region containing binary data
*\li 'target' is a text buffer containing available space
*\li 'wordbreak' points to a null-terminated string of
* zero or more whitespace characters
*
* Ensures:
*\li target will contain the hex encoded version of the data
* in source. The 'used' pointer in target will be advanced as
* necessary.
*/
isc_result_t
isc_hex_decodestring(const char *cstr, isc_buffer_t *target);
/*!<
* \brief Decode a null-terminated hex string.
*
* Requires:
*\li 'cstr' is non-null.
*\li 'target' is a valid buffer.
*
* Returns:
*\li #ISC_R_SUCCESS -- the entire decoded representation of 'cstring'
* fit in 'target'.
*\li #ISC_R_BADHEX -- 'cstr' is not a valid hex encoding.
*
* Other error returns are any possible error code from:
* isc_lex_create(),
* isc_lex_openbuffer(),
* isc_hex_tobuffer().
*/
isc_result_t
isc_hex_tobuffer(isc_lex_t *lexer, isc_buffer_t *target, int length);
/*!<
* \brief Convert hex encoded text from a lexer context into data.
*
* Requires:
*\li 'lex' is a valid lexer context
*\li 'target' is a buffer containing binary data
*\li 'length' is an integer
*
* Ensures:
*\li target will contain the data represented by the hex encoded
* string parsed by the lexer. No more than length bytes will be read,
* if length is positive. The 'used' pointer in target will be
* advanced as necessary.
*/
ISC_LANG_ENDDECLS
#endif /* ISC_HEX_H */