| /*** |
| This file is part of avahi. |
| |
| avahi is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as |
| published by the Free Software Foundation; either version 2.1 of the |
| License, or (at your option) any later version. |
| |
| avahi is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General |
| Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with avahi; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| USA. |
| ***/ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| #include <avahi-common/llist.h> |
| #include <avahi-common/malloc.h> |
| |
| #include "rrlist.h" |
| #include "log.h" |
| |
| typedef struct AvahiRecordListItem AvahiRecordListItem; |
| |
| struct AvahiRecordListItem { |
| int read; |
| AvahiRecord *record; |
| int unicast_response; |
| int flush_cache; |
| int auxiliary; |
| AVAHI_LLIST_FIELDS(AvahiRecordListItem, items); |
| }; |
| |
| struct AvahiRecordList { |
| AVAHI_LLIST_HEAD(AvahiRecordListItem, read); |
| AVAHI_LLIST_HEAD(AvahiRecordListItem, unread); |
| |
| int all_flush_cache; |
| }; |
| |
| AvahiRecordList *avahi_record_list_new(void) { |
| AvahiRecordList *l; |
| |
| if (!(l = avahi_new(AvahiRecordList, 1))) { |
| avahi_log_error("avahi_new() failed."); |
| return NULL; |
| } |
| |
| AVAHI_LLIST_HEAD_INIT(AvahiRecordListItem, l->read); |
| AVAHI_LLIST_HEAD_INIT(AvahiRecordListItem, l->unread); |
| |
| l->all_flush_cache = 1; |
| return l; |
| } |
| |
| void avahi_record_list_free(AvahiRecordList *l) { |
| assert(l); |
| |
| avahi_record_list_flush(l); |
| avahi_free(l); |
| } |
| |
| static void item_free(AvahiRecordList *l, AvahiRecordListItem *i) { |
| assert(l); |
| assert(i); |
| |
| if (i->read) |
| AVAHI_LLIST_REMOVE(AvahiRecordListItem, items, l->read, i); |
| else |
| AVAHI_LLIST_REMOVE(AvahiRecordListItem, items, l->unread, i); |
| |
| avahi_record_unref(i->record); |
| avahi_free(i); |
| } |
| |
| void avahi_record_list_flush(AvahiRecordList *l) { |
| assert(l); |
| |
| while (l->read) |
| item_free(l, l->read); |
| while (l->unread) |
| item_free(l, l->unread); |
| |
| l->all_flush_cache = 1; |
| } |
| |
| AvahiRecord* avahi_record_list_next(AvahiRecordList *l, int *ret_flush_cache, int *ret_unicast_response, int *ret_auxiliary) { |
| AvahiRecord *r; |
| AvahiRecordListItem *i; |
| |
| if (!(i = l->unread)) |
| return NULL; |
| |
| assert(!i->read); |
| |
| r = avahi_record_ref(i->record); |
| if (ret_unicast_response) |
| *ret_unicast_response = i->unicast_response; |
| if (ret_flush_cache) |
| *ret_flush_cache = i->flush_cache; |
| if (ret_auxiliary) |
| *ret_auxiliary = i->auxiliary; |
| |
| AVAHI_LLIST_REMOVE(AvahiRecordListItem, items, l->unread, i); |
| AVAHI_LLIST_PREPEND(AvahiRecordListItem, items, l->read, i); |
| |
| i->read = 1; |
| |
| return r; |
| } |
| |
| static AvahiRecordListItem *get(AvahiRecordList *l, AvahiRecord *r) { |
| AvahiRecordListItem *i; |
| |
| assert(l); |
| assert(r); |
| |
| for (i = l->read; i; i = i->items_next) |
| if (avahi_record_equal_no_ttl(i->record, r)) |
| return i; |
| |
| for (i = l->unread; i; i = i->items_next) |
| if (avahi_record_equal_no_ttl(i->record, r)) |
| return i; |
| |
| return NULL; |
| } |
| |
| void avahi_record_list_push(AvahiRecordList *l, AvahiRecord *r, int flush_cache, int unicast_response, int auxiliary) { |
| AvahiRecordListItem *i; |
| |
| assert(l); |
| assert(r); |
| |
| if (get(l, r)) |
| return; |
| |
| if (!(i = avahi_new(AvahiRecordListItem, 1))) { |
| avahi_log_error("avahi_new() failed."); |
| return; |
| } |
| |
| i->unicast_response = unicast_response; |
| i->flush_cache = flush_cache; |
| i->auxiliary = auxiliary; |
| i->record = avahi_record_ref(r); |
| i->read = 0; |
| |
| l->all_flush_cache = l->all_flush_cache && flush_cache; |
| |
| AVAHI_LLIST_PREPEND(AvahiRecordListItem, items, l->unread, i); |
| } |
| |
| void avahi_record_list_drop(AvahiRecordList *l, AvahiRecord *r) { |
| AvahiRecordListItem *i; |
| |
| assert(l); |
| assert(r); |
| |
| if (!(i = get(l, r))) |
| return; |
| |
| item_free(l, i); |
| } |
| |
| int avahi_record_list_is_empty(AvahiRecordList *l) { |
| assert(l); |
| |
| return !l->unread && !l->read; |
| } |
| |
| int avahi_record_list_all_flush_cache(AvahiRecordList *l) { |
| assert(l); |
| |
| /* Return TRUE if all entries in this list have flush_cache set */ |
| |
| return l->all_flush_cache; |
| } |