109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/*
|
|
*
|
|
* ===================================
|
|
* HARP | Host ATM Research Platform
|
|
* ===================================
|
|
*
|
|
*
|
|
* This Host ATM Research Platform ("HARP") file (the "Software") is
|
|
* made available by Network Computing Services, Inc. ("NetworkCS")
|
|
* "AS IS". NetworkCS does not provide maintenance, improvements or
|
|
* support of any kind.
|
|
*
|
|
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
|
|
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
|
|
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
|
|
* In no event shall NetworkCS be responsible for any damages, including
|
|
* but not limited to consequential damages, arising from or relating to
|
|
* any use of the Software or related support.
|
|
*
|
|
* Copyright 1994-1998 Network Computing Services, Inc.
|
|
*
|
|
* Copies of this Software may be made, however, the above copyright
|
|
* notice must be reproduced on all copies.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* User Space Library Functions
|
|
* ----------------------------
|
|
*
|
|
* SCSP cache key computation
|
|
*
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netatm/port.h>
|
|
#include <netatm/atm.h>
|
|
#include <netatm/atm_if.h>
|
|
#include <netatm/atm_sap.h>
|
|
#include <netatm/atm_sys.h>
|
|
#include <netatm/atm_ioctl.h>
|
|
|
|
#include <md5.h>
|
|
#include <string.h>
|
|
|
|
#include "libatm.h"
|
|
|
|
/*
|
|
* Compute an SCSP cache key
|
|
*
|
|
* Arguments:
|
|
* ap pointer to an Atm_addr with the ATM address
|
|
* ip pointer to a struct in_addr with the IP address
|
|
* ol the required length of the cache key
|
|
* op pointer to receive cache key
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
scsp_cache_key(ap, ip, ol, op)
|
|
Atm_addr *ap;
|
|
struct in_addr *ip;
|
|
int ol;
|
|
char *op;
|
|
{
|
|
int i, len;
|
|
char buff[32], digest[16];
|
|
MD5_CTX context;
|
|
|
|
/*
|
|
* Initialize
|
|
*/
|
|
bzero(buff, sizeof(buff));
|
|
|
|
/*
|
|
* Copy the addresses into a buffer for MD5 computation
|
|
*/
|
|
len = sizeof(struct in_addr) + ap->address_length;
|
|
if (len > sizeof(buff))
|
|
len = sizeof(buff);
|
|
bcopy(ip, buff, sizeof(struct in_addr));
|
|
bcopy(ap->address, &buff[sizeof(struct in_addr)],
|
|
len - sizeof(struct in_addr));
|
|
|
|
/*
|
|
* Compute the MD5 digest of the combined IP and ATM addresses
|
|
*/
|
|
MD5Init(&context);
|
|
MD5Update(&context, buff, len);
|
|
MD5Final(digest, &context);
|
|
|
|
/*
|
|
* Fold the 16-byte digest to the required length
|
|
*/
|
|
bzero((caddr_t)op, ol);
|
|
for (i = 0; i < 16; i++) {
|
|
op[i % ol] = op[i % ol] ^ digest[i];
|
|
}
|
|
}
|