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/*
* Copyright (c) 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* J.Q. Johnson.
*
* Portions copyright (c) 1999, 2000
* Intel Corporation.
* 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 the University of
* California, Berkeley, Intel Corporation, and its contributors.
*
* 4. Neither the name of University, Intel Corporation, or their respective
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND
* CONTRIBUTORS ``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 REGENTS,
* INTEL CORPORATION OR CONTRIBUTORS 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.
*
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)ns_addr.c 8.1 (Berkeley) 6/7/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
#include <netns/ns.h>
#include <stdio.h>
#include <string.h>
static struct ns_addr addr, zero_addr;
static void Field (char *buf, u_char *out, int len);
static void cvtbase (long oldbase, int newbase, int input[], int inlen, unsigned char result[], int reslen);
struct ns_addr
ns_addr(
const char *name
)
{
char separator;
char *hostname, *socketname, *cp;
char buf[50];
(void)strncpy(buf, name, sizeof(buf) - 1);
buf[sizeof(buf) - 1] = '\0';
/*
* First, figure out what he intends as a field separtor.
* Despite the way this routine is written, the prefered
* form 2-272.AA001234H.01777, i.e. XDE standard.
* Great efforts are made to insure backward compatability.
*/
if ((hostname = strchr(buf, '#')) != NULL)
separator = '#';
else {
hostname = strchr(buf, '.');
if ((cp = strchr(buf, ':')) &&
((hostname && cp < hostname) || (hostname == 0))) {
hostname = cp;
separator = ':';
} else
separator = '.';
}
if (hostname)
*hostname++ = 0;
addr = zero_addr;
Field(buf, addr.x_net.c_net, 4);
if (hostname == 0)
return (addr); /* No separator means net only */
socketname = strchr(hostname, separator);
if (socketname) {
*socketname++ = 0;
Field(socketname, (u_char *)&addr.x_port, 2);
}
Field(hostname, addr.x_host.c_host, 6);
return (addr);
}
static void
Field(
char *buf,
u_char *out,
int len
)
{
register char *bp = buf;
int i, ibase, base16 = 0, base10 = 0, clen = 0;
int hb[6], *hp;
char *fmt;
/*
* first try 2-273#2-852-151-014#socket
*/
if ((*buf != '-') &&
(1 < (i = sscanf(buf, "%d-%d-%d-%d-%d",
&hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) {
cvtbase(1000L, 256, hb, i, out, len);
return;
}
/*
* try form 8E1#0.0.AA.0.5E.E6#socket
*/
if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x",
&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
cvtbase(256L, 256, hb, i, out, len);
return;
}
/*
* try form 8E1#0:0:AA:0:5E:E6#socket
*/
if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x",
&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
cvtbase(256L, 256, hb, i, out, len);
return;
}
/*
* This is REALLY stretching it but there was a
* comma notation separting shorts -- definitely non standard
*/
if (1 < (i = sscanf(buf,"%x,%x,%x",
&hb[0], &hb[1], &hb[2]))) {
hb[0] = htons(hb[0]); hb[1] = htons(hb[1]);
hb[2] = htons(hb[2]);
cvtbase(65536L, 256, hb, i, out, len);
return;
}
/* Need to decide if base 10, 16 or 8 */
while (*bp) switch (*bp++) {
case '0': case '1': case '2': case '3': case '4': case '5':
case '6': case '7': case '-':
break;
case '8': case '9':
base10 = 1;
break;
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
base16 = 1;
break;
case 'x': case 'X':
*--bp = '0';
base16 = 1;
break;
case 'h': case 'H':
base16 = 1;
/* fall into */
default:
*--bp = 0; /* Ends Loop */
}
if (base16) {
fmt = "%3x";
ibase = 4096;
} else if (base10 == 0 && *buf == '0') {
fmt = "%3o";
ibase = 512;
} else {
fmt = "%3d";
ibase = 1000;
}
for (bp = buf; *bp++; ) clen++;
if (clen == 0) clen++;
if (clen > 18) clen = 18;
i = ((clen - 1) / 3) + 1;
bp = clen + buf - 3;
hp = hb + i - 1;
while (hp > hb) {
(void)sscanf(bp, fmt, hp);
bp[0] = 0;
hp--;
bp -= 3;
}
(void)sscanf(buf, fmt, hp);
cvtbase((long)ibase, 256, hb, i, out, len);
}
static void
cvtbase(
long oldbase,
int newbase,
int input[],
int inlen,
unsigned char result[],
int reslen
)
{
int d, e;
long sum;
e = 1;
while (e > 0 && reslen > 0) {
d = 0; e = 0; sum = 0;
/* long division: input=input/newbase */
while (d < inlen) {
sum = sum*oldbase + (long) input[d];
e += (sum > 0);
input[d++] = sum / newbase;
sum %= newbase;
}
result[--reslen] = (u_char)sum; /* accumulate remainder */
}
for (d=0; d < reslen; d++)
result[d] = 0;
}
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