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/*
* Copyright (c) 2008-2024 OARC, Inc.
* Copyright (c) 2007-2008, Internet Systems Consortium, Inc.
* Copyright (c) 2003-2007, The Measurement Factory, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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
* COPYRIGHT HOLDER 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.
*/
#include "config.h"
#include "edns_bufsiz_index.h"
int edns_bufsiz_max = 0;
int edns_bufsiz_indexer(const dns_message* m)
{
int index;
if (m->malformed)
return -1;
if (0 == m->edns.found)
return 0;
index = (int)(m->edns.bufsiz >> 9) + 1;
if (index > edns_bufsiz_max)
edns_bufsiz_max = index;
return index;
}
int edns_bufsiz_iterator(const char** label)
{
static int next_iter = 0;
static char buf[20];
if (NULL == label) {
next_iter = 0;
return 0;
}
if (next_iter > edns_bufsiz_max) {
return -1;
} else if (0 == next_iter) {
*label = "None";
} else {
snprintf(buf, sizeof(buf), "%d-%d", (next_iter - 1) << 9, (next_iter << 9) - 1);
*label = buf;
}
return next_iter++;
}
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