GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/mopd/mopd/../common/get.c Lines: 0 36 0.0 %
Date: 2017-11-07 Branches: 0 12 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: get.c,v 1.8 2009/10/27 23:59:52 deraadt Exp $ */
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/*
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 * Copyright (c) 1993-2006 Mats O Jansson.  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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 * 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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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include "common/mopdef.h"
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u_char
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mopGetChar(u_char *pkt, int *idx)
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{
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	u_char ret;
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	ret = pkt[*idx];
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	*idx = *idx + 1;
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	return (ret);
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}
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u_short
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mopGetShort(u_char *pkt, int *idx)
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{
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	u_short ret;
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	ret = pkt[*idx] + pkt[*idx+1]*256;
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	*idx = *idx + 2;
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	return (ret);
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}
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u_short
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mopGetNShort(u_char *pkt, int *idx)
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{
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	u_short ret;
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	ret = pkt[*idx]*256 + pkt[*idx+1];
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	*idx = *idx + 2;
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	return (ret);
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}
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u_long
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mopGetLong(u_char *pkt, int *idx)
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{
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	u_long ret;
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	ret = pkt[*idx] + pkt[*idx+1]*0x100 + pkt[*idx+2]*0x10000 +
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	    pkt[*idx+3]*0x1000000;
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	*idx = *idx + 4;
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	return (ret);
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}
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void
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mopGetMulti(u_char *pkt, int *idx, u_char *dest, int size)
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{
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	int i;
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	for (i = 0; i < size; i++)
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		dest[i] = pkt[*idx+i];
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	*idx = *idx + size;
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}
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int
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mopGetTrans(u_char *pkt, int trans)
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{
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	u_short	ptype;
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	if (trans == 0) {
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		ptype = pkt[12]*256 + pkt[13];
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		if (ptype < 1600)
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			trans = TRANS_8023;
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		else
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			trans = TRANS_ETHER;
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	}
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	return (trans);
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}
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void
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mopGetHeader(u_char *pkt, int *idx, u_char **dst, u_char **src,
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    u_short *proto, int *len, int trans)
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{
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	*dst = pkt;
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	*src = pkt + 6;
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	*idx = *idx + 12;
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	switch (trans) {
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	case TRANS_ETHER:
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		*proto = mopGetNShort(pkt, idx);
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		*len   = (int)mopGetShort(pkt, idx);
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		break;
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	case TRANS_8023:
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		*len   = (int)mopGetNShort(pkt, idx);
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		*idx   = *idx + 6;
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		*proto = mopGetNShort(pkt, idx);
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		break;
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	}
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}
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u_short
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mopGetLength(u_char *pkt, int trans)
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{
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	switch (trans) {
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	case TRANS_ETHER:
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		return (pkt[14] + pkt[15]*256);
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	case TRANS_8023:
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		return (pkt[12]*256 + pkt[13]);
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	}
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	return (0);
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}