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/*
* testcode/readhex.c - read hex data.
*
* Copyright (c) 2007, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of the NLNET LABS 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 COPYRIGHT HOLDERS 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.
*
*/
/**
* \file
* Declarations useful for the unit tests.
*/
#include "config.h"
#include <ctype.h>
#include "testcode/readhex.h"
#include "util/log.h"
/** skip whitespace */
static void
skip_whites(const char** p)
{
while(1) {
while(isspace((int)**p))
(*p)++;
if(**p == ';') {
/* comment, skip until newline */
while(**p && **p != '\n')
(*p)++;
if(**p == '\n')
(*p)++;
} else return;
}
}
/* takes a hex string and puts into buffer */
void hex_to_buf(ldns_buffer* pkt, const char* hex)
{
const char* p = hex;
int val;
ldns_buffer_clear(pkt);
while(*p) {
skip_whites(&p);
if(ldns_buffer_position(pkt) == ldns_buffer_limit(pkt))
fatal_exit("hex_to_buf: buffer too small");
if(!isalnum((int)*p))
break;
val = ldns_hexdigit_to_int(*p++) << 4;
skip_whites(&p);
log_assert(*p && isalnum((int)*p));
val |= ldns_hexdigit_to_int(*p++);
ldns_buffer_write_u8(pkt, (uint8_t)val);
skip_whites(&p);
}
ldns_buffer_flip(pkt);
}
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