86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
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/*
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* testcode/readhex.c - read hex data.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* Declarations useful for the unit tests.
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*/
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#include "config.h"
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#include <ctype.h>
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#include "testcode/readhex.h"
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#include "util/log.h"
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#include "ldns/sbuffer.h"
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#include "ldns/parseutil.h"
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/** skip whitespace */
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static void
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skip_whites(const char** p)
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{
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while(1) {
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while(isspace((int)**p))
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(*p)++;
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if(**p == ';') {
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/* comment, skip until newline */
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while(**p && **p != '\n')
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(*p)++;
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if(**p == '\n')
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(*p)++;
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} else return;
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}
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}
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/* takes a hex string and puts into buffer */
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void hex_to_buf(sldns_buffer* pkt, const char* hex)
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{
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const char* p = hex;
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int val;
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sldns_buffer_clear(pkt);
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while(*p) {
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skip_whites(&p);
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if(sldns_buffer_position(pkt) == sldns_buffer_limit(pkt))
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fatal_exit("hex_to_buf: buffer too small");
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if(!isalnum((int)*p))
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break;
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val = sldns_hexdigit_to_int(*p++) << 4;
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skip_whites(&p);
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log_assert(*p && isalnum((int)*p));
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val |= sldns_hexdigit_to_int(*p++);
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sldns_buffer_write_u8(pkt, (uint8_t)val);
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skip_whites(&p);
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}
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sldns_buffer_flip(pkt);
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}
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