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Diffstat (limited to 'package/mopd/src/common/get.c')
| -rw-r--r-- | package/mopd/src/common/get.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/package/mopd/src/common/get.c b/package/mopd/src/common/get.c new file mode 100644 index 000000000..995f20a44 --- /dev/null +++ b/package/mopd/src/common/get.c @@ -0,0 +1,152 @@ +/* $NetBSD: get.c,v 1.2 1997/03/25 03:07:15 thorpej Exp $ */ + +/* + * Copyright (c) 1993-95 Mats O Jansson. 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Mats O Jansson. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <sys/cdefs.h> +#ifndef lint +static char rcsid[]="$NetBSD: get.c,v 1.2 1997/03/25 03:07:15 thorpej Exp $"; +#endif + +#include "os.h" +#include "get.h" +#include "mopdef.h" + +u_char +mopGetChar(pkt, index) + u_char *pkt; + int *index; +{ + u_char ret; + + ret = pkt[*index]; + *index = *index + 1; + return(ret); +} + +u_short +mopGetShort(pkt, index) + u_char *pkt; + int *index; +{ + u_short ret; + + ret = pkt[*index] + pkt[*index+1]*256; + *index = *index + 2; + return(ret); +} + +u_int32_t +mopGetLong(pkt, index) + u_char *pkt; + int *index; +{ + u_int32_t ret; + + ret = pkt[*index] + + pkt[*index+1]*0x100 + + pkt[*index+2]*0x10000 + + pkt[*index+3]*0x1000000; + *index = *index + 4; + return(ret); +} + +void +mopGetMulti(pkt, index, dest, size) + u_char *pkt,*dest; + int *index,size; +{ + int i; + + for (i = 0; i < size; i++) { + dest[i] = pkt[*index+i]; + } + *index = *index + size; + +} + +int +mopGetTrans(pkt, trans) + u_char *pkt; + int trans; +{ + u_short *ptype; + + if (trans == 0) { + ptype = (u_short *)(pkt+12); + if (ntohs(*ptype) < 1600) { + trans = TRANS_8023; + } else { + trans = TRANS_ETHER; + } + } + return(trans); +} + +void +mopGetHeader(pkt, index, dst, src, proto, len, trans) + u_char *pkt, **dst, **src; + int *index, *len, trans; + u_short *proto; +{ + *dst = pkt; + *src = pkt + 6; + *index = *index + 12; + + switch(trans) { + case TRANS_ETHER: + *proto = (u_short)(pkt[*index]*256 + pkt[*index+1]); + *index = *index + 2; + *len = (int)(pkt[*index+1]*256 + pkt[*index]); + *index = *index + 2; + break; + case TRANS_8023: + *len = (int)(pkt[*index]*256 + pkt[*index+1]); + *index = *index + 8; + *proto = (u_short)(pkt[*index]*256 + pkt[*index+1]); + *index = *index + 2; + break; + } +} + +u_short +mopGetLength(pkt, trans) + u_char *pkt; + int trans; +{ + switch(trans) { + case TRANS_ETHER: + return(pkt[15]*256 + pkt[14]); + break; + case TRANS_8023: + return(pkt[12]*256 + pkt[13]); + break; + } + return(0); +} |