4 int __dn_expand(const unsigned char *base, const unsigned char *end, const unsigned char *src, char *dest, int space)
6 const unsigned char *p = src;
7 char *dend = dest + (space > 254 ? 254 : space);
9 if (p==end || !*p) return -1;
10 /* detect reference loop using an iteration counter */
11 for (i=0; i < end-base; i+=2) {
13 if (p+1==end) return -1;
14 j = ((p[0] & 0x3f) << 8) | p[1];
15 if (len < 0) len = p+2-src;
16 if (j >= end-base) return -1;
20 if (j>=end-p || j>dend-dest) return -1;
21 while (--j) *dest++ = *++p;
22 *dest++ = *++p ? '.' : 0;
24 if (len < 0) len = p+1-src;
31 weak_alias(__dn_expand, dn_expand);