+ char buf[256];
+ FILE *in = fopen(filename, "r");
+ if (in == NULL) {
+ perror(filename);
+ exit(1);
+ }
+
+ for ( ;; ) {
+ char *ptr;
+ struct in_addr addr;
+ struct hostent *he;
+
+ if (fgets(buf, 256, in) == NULL)
+ break;
+
+ ptr = strchr(buf, '\n');
+ if (ptr != NULL)
+ *ptr = 0;
+
+ ptr = strchr(buf, '\r');
+ if (ptr != NULL)
+ *ptr = 0;
+
+ ptr = buf + strspn(buf, " \t");
+
+ if (ptr[0] == '#' || ptr[0] == 0)
+ continue;
+
+ he = gethostbyname(ptr);
+ if (he == NULL) {
+ perror(ptr);
+ exit(1);
+ }
+
+ // just pick the first for now
+ memcpy(&addr.s_addr, he->h_addr_list[0], sizeof(addr.s_addr));
+
+ if (*num >= *room) {
+ if (*room == 0) {
+ *room = 16;
+ } else {
+ *room <<= 1;
+ }
+ *addr_list = (struct in_addr *)realloc(*addr_list, *room * sizeof(struct in_addr));
+ }
+
+ (*addr_list)[*num] = addr;
+ ++*num;
+ }
+
+ fclose(in);