-/* find option 'code' in opt_list */
-struct option_set *find_option(struct option_set *opt_list, char code)
-{
- while (opt_list && opt_list->data[OPT_CODE] < code)
- opt_list = opt_list->next;
-
- if (opt_list && opt_list->data[OPT_CODE] == code) return opt_list;
- else return NULL;
-}
-
-
-/* add an option to the opt_list */
-void attach_option(struct option_set **opt_list, struct dhcp_option *option, char *buffer, int length)
-{
- struct option_set *existing, *new, **curr;
-
- /* add it to an existing option */
- if ((existing = find_option(*opt_list, option->code))) {
- DEBUG(LOG_INFO, "Attaching option %s to existing member of list", option->name);
- if (option->flags & OPTION_LIST) {
- if (existing->data[OPT_LEN] + length <= 255) {
- existing->data = realloc(existing->data,
- existing->data[OPT_LEN] + length + 2);
- memcpy(existing->data + existing->data[OPT_LEN] + 2, buffer, length);
- existing->data[OPT_LEN] += length;
- } /* else, ignore the data, we could put this in a second option in the future */
- } /* else, ignore the new data */
- } else {
- DEBUG(LOG_INFO, "Attaching option %s to list", option->name);
-
- /* make a new option */
- new = xmalloc(sizeof(struct option_set));
- new->data = xmalloc(length + 2);
- new->data[OPT_CODE] = option->code;
- new->data[OPT_LEN] = length;
- memcpy(new->data + 2, buffer, length);
-
- curr = opt_list;
- while (*curr && (*curr)->data[OPT_CODE] < option->code)
- curr = &(*curr)->next;
-
- new->next = *curr;
- *curr = new;
- }