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#if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$Id: nsap_addr.c,v 1.1.1.1 1998/02/10 21:01:47 mea Exp $";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "arpa/nameser.h"
#include <ctype.h>
#include "resolv.h"
#include "portability.h"
#if !defined(isxdigit) /* XXX - could be a function */
static int
isxdigit(c)
register int c;
{
return ((c >= '0') && (c <= '9')) || ((c >= 'A') && (c <= 'F'));
}
#endif
static char
xtob(c)
register int c;
{
return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
}
u_int
inet_nsap_addr(ascii, binary, maxlen)
const char *ascii;
u_char *binary;
int maxlen;
{
register u_char c, nib;
u_int len = 0;
while ((c = *ascii++) != '\0' && len < maxlen) {
if (c == '.' || c == '+' || c == '/')
continue;
if (!isascii(c))
return (0);
if (islower(c))
c = toupper(c);
if (isxdigit(c)) {
nib = xtob(c);
if (c = *ascii++) {
c = toupper(c);
if (isxdigit(c)) {
*binary++ = (nib << 4) | xtob(c);
len++;
} else
return (0);
}
else
return (0);
}
else
return (0);
}
return (len);
}
char *
inet_nsap_ntoa(binlen, binary, ascii)
int binlen;
register const u_char *binary;
register char *ascii;
{
register int nib;
int i;
static char tmpbuf[255*3];
char *start;
if (ascii)
start = ascii;
else {
ascii = tmpbuf;
start = tmpbuf;
}
if (binlen > 255)
binlen = 255;
for (i = 0; i < binlen; i++) {
nib = *binary >> 4;
*ascii++ = nib + (nib < 10 ? '0' : '7');
nib = *binary++ & 0x0f;
*ascii++ = nib + (nib < 10 ? '0' : '7');
if (((i % 2) == 0 && (i + 1) < binlen))
*ascii++ = '.';
}
*ascii = '\0';
return (start);
}
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