60 lines
886 B
C
60 lines
886 B
C
/*
|
|
* decodenetnum - return a net number (this is crude, but careful)
|
|
*/
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include "ntp_stdlib.h"
|
|
|
|
int
|
|
decodenetnum(
|
|
const char *num,
|
|
u_int32 *netnum
|
|
)
|
|
{
|
|
register const char *cp;
|
|
register char *bp;
|
|
register int i;
|
|
register int temp;
|
|
register int eos;
|
|
char buf[80]; /* will core dump on really stupid stuff */
|
|
|
|
cp = num;
|
|
*netnum = 0;
|
|
|
|
if (*cp == '[') {
|
|
eos = ']';
|
|
cp++;
|
|
} else {
|
|
eos = '\0';
|
|
}
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
bp = buf;
|
|
while (isdigit((int)*cp))
|
|
*bp++ = *cp++;
|
|
if (bp == buf)
|
|
break;
|
|
|
|
if (i < 3) {
|
|
if (*cp++ != '.')
|
|
break;
|
|
} else if (*cp != eos)
|
|
break;
|
|
|
|
*bp = '\0';
|
|
temp = atoi(buf);
|
|
if (temp > 255)
|
|
break;
|
|
*netnum <<= 8;
|
|
*netnum += temp;
|
|
}
|
|
|
|
if (i < 4)
|
|
return 0;
|
|
*netnum = htonl(*netnum);
|
|
return 1;
|
|
}
|