/* * 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 */