- ip_mask_t *ip;
- int masker;
- char *q, *p;
- struct hostent *h;
-
- p = str;
- if((q = strchr(p, '/')))
- {
- *q = '\0';
- q++; /* q now points to netmask part, or NULL if no mask */
- }
-
- if(!(h = gethostbyname(p)))
- {
- fprintf(stderr, "Error looking up `%s': %s\n", p, sys_errlist[h_errno]);
- return NULL;
- }
-
- masker = 0;
- if(q)
- {
- masker = strtol(q, &p, 10);
- if(q == p || (*p))
- return NULL;
- }
-
- ip = xmalloc(sizeof(ip_mask_t));
- ip->ip = ntohl(*((ip_t*)(h->h_addr_list[0])));
-
- ip->mask = masker ? ~((1 << (32 - masker)) - 1) : 0;
-
- return ip;
+ int i, m;
+ char *a = va;
+ const char *b = vb;
+
+ cp();
+
+ for(m = masklen, i = 0; m >= 8; m -= 8, i++)
+ a[i] = b[i];
+
+ if(m) {
+ a[i] = b[i] & (0x100 - (1 << m));
+ i++;
+ }
+
+ for(; i < len; i++)
+ a[i] = 0;