74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
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/*
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* Copyright (c) 2008-2024 OARC, Inc.
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* Copyright (c) 2007-2008, Internet Systems Consortium, Inc.
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* Copyright (c) 2003-2007, The Measurement Factory, Inc.
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* All rights reserved.
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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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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without 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
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "edns_bufsiz_index.h"
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int edns_bufsiz_max = 0;
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int edns_bufsiz_indexer(const dns_message* m)
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{
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int index;
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if (m->malformed)
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return -1;
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if (0 == m->edns.found)
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return 0;
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index = (int)(m->edns.bufsiz >> 9) + 1;
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if (index > edns_bufsiz_max)
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edns_bufsiz_max = index;
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return index;
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}
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int edns_bufsiz_iterator(const char** label)
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{
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static int next_iter = 0;
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static char buf[20];
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if (NULL == label) {
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next_iter = 0;
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return 0;
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}
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if (next_iter > edns_bufsiz_max) {
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return -1;
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} else if (0 == next_iter) {
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*label = "None";
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} else {
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snprintf(buf, sizeof(buf), "%d-%d", (next_iter - 1) << 9, (next_iter << 9) - 1);
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*label = buf;
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}
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return next_iter++;
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}
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