#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: nsap_addr.c,v 1.3.18.2 2005/07/28 07:38:08 marka Exp $";
#define USE_ASCII
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/inet/nsap_addr.c,v 1.3 2007/06/03 17:20:26 ume Exp $");
#include "port_before.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <ctype.h>
#include <resolv.h>
#include "port_after.h"
#include <stdlib.h>
static char
xtob(int c) {
return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
}
u_int
inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) {
u_char c, nib;
u_int len = 0;
if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X'))
return (0);
ascii += 2;
while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
if (c == '.' || c == '+' || c == '/')
continue;
if (!isascii(c))
return (0);
if (islower(c))
c = toupper(c);
if (isxdigit(c)) {
nib = xtob(c);
c = *ascii++;
if (c != '\0') {
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(int binlen, const u_char *binary, char *ascii) {
int nib;
int i;
char *tmpbuf = NULL;
char *start;
if (tmpbuf == NULL) {
tmpbuf = malloc(255*3);
if (tmpbuf == NULL) return NULL;
}
if (ascii)
start = ascii;
else {
ascii = tmpbuf;
start = tmpbuf;
}
*ascii++ = '0';
*ascii++ = 'x';
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);
}
#undef inet_nsap_addr
__weak_reference(__inet_nsap_addr, inet_nsap_addr);
#undef inet_nsap_ntoa
__weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa);