47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "capwap.h"
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/*
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* for each capwap message element in msgelems call the callback function
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*/
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int cw_foreach_msgelem(uint8_t * msgelems, int len,
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int (*callback)(void*,int,uint8_t*,int),void *arg )
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{
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uint32_t val;
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int type;
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int elen;
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int i=0;
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do {
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val = ntohl(*(uint32_t*)(msgelems+i));
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type=(val>>16) & 0xFFFF;
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elen = val & 0xffff;
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if (i+elen+4>len) {
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return 0;
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}
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callback(arg,type,msgelems+i+4,elen);
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i+=elen+4;
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} while (i<len);
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return 1;
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}
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