C -Code zum Java -Konverter
#include <stdio.h>
Tumbling Helmet
#include <stdio.h>#include<stdio.h>[email protected]decode_rfc3397(char *out, ssize_t len, int pl, const uint8_t *p)
{
const uint8_t *r, *q = p;
int count = 0, l, hops;
uint8_t ltype;
while (q - p < pl) {
r = NULL;
hops = 0;
/* We check we are inside our length again incase
* the data is NOT terminated correctly. */
while ((l = *q++) && q - p < pl) {
ltype = l & 0xc0;
if (ltype == 0x80 || ltype == 0x40)
return 0;
else if (ltype == 0xc0) { /* pointer */
l = (l & 0x3f) << 8;
l |= *q++;
/* save source of first jump. */
if (!r)
r = q;
hops++;
if (hops > 255)
return 0;
q = p + l;
if (q - p >= pl)
return 0;
} else {
/* straightforward name segment, add with '.' */
count += l + 1;
if (out) {
if ((ssize_t)l + 1 > len) {
errno = ENOBUFS;
return -1;
}
memcpy(out, q, l);
out += l;
*out++ = '.';
len -= l;
len--;
}
q += l;
}
}
/* change last dot to space */
if (out)
*(out - 1) = ' ';
if (r)
q = r;
}
/* change last space to zero terminator */
if (out)
*(out - 1) = 0;
return count;
}