git.meshlink.io Git - catta/blob - avahi-core/server.h

   1 #ifndef fooserverhfoo
   2 #define fooserverhfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of avahi.
   8
   9   avahi is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as
  11   published by the Free Software Foundation; either version 2.1 of the
  12   License, or (at your option) any later version.
  13
  14   avahi is distributed in the hope that it will be useful, but WITHOUT
  15   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16   or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
  17   Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public
  20   License along with avahi; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <avahi-common/llist.h>
  26 #include <avahi-common/watch.h>
  27
  28 /** A locally registered DNS resource record */
  29 typedef struct AvahiEntry AvahiEntry;
  30
  31 #include "core.h"
  32 #include "iface.h"
  33 #include "prioq.h"
  34 #include "timeeventq.h"
  35 #include "announce.h"
  36 #include "browse.h"
  37 #include "dns.h"
  38 #include "rrlist.h"
  39 #include "hashmap.h"
  40 #include "wide-area.h"
  41 #include "multicast-lookup.h"
  42
  43 #define AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS 100
  44
  45 #define AVAHI_FLAGS_VALID(flags, max) (!((flags) & ~(max)))
  46
  47 typedef struct AvahiLegacyUnicastReflectSlot AvahiLegacyUnicastReflectSlot;
  48
  49 struct AvahiLegacyUnicastReflectSlot {
  50     AvahiServer *server;
  51
  52     uint16_t id, original_id;
  53     AvahiAddress address;
  54     uint16_t port;
  55     int interface;
  56     struct timeval elapse_time;
  57     AvahiTimeEvent *time_event;
  58 };
  59
  60 struct AvahiEntry {
  61     AvahiServer *server;
  62     AvahiSEntryGroup *group;
  63
  64     int dead;
  65
  66     AvahiPublishFlags flags;
  67     AvahiRecord *record;
  68     AvahiIfIndex interface;
  69     AvahiProtocol protocol;
  70
  71     AVAHI_LLIST_FIELDS(AvahiEntry, entries);
  72     AVAHI_LLIST_FIELDS(AvahiEntry, by_key);
  73     AVAHI_LLIST_FIELDS(AvahiEntry, by_group);
  74
  75     AVAHI_LLIST_HEAD(AvahiAnnouncement, announcements);
  76 };
  77
  78 struct AvahiSEntryGroup {
  79     AvahiServer *server;
  80     int dead;
  81
  82     AvahiEntryGroupState state;
  83     void* userdata;
  84     AvahiSEntryGroupCallback callback;
  85
  86     unsigned n_probing;
  87
  88     unsigned n_register_try;
  89     struct timeval register_time;
  90     AvahiTimeEvent *register_time_event;
  91
  92     AVAHI_LLIST_FIELDS(AvahiSEntryGroup, groups);
  93     AVAHI_LLIST_HEAD(AvahiEntry, entries);
  94 };
  95
  96 struct AvahiServer {
  97     const AvahiPoll *poll_api;
  98
  99     AvahiInterfaceMonitor *monitor;
 100     AvahiServerConfig config;
 101
 102     AVAHI_LLIST_HEAD(AvahiEntry, entries);
 103     AvahiHashmap *entries_by_key;
 104
 105     AVAHI_LLIST_HEAD(AvahiSEntryGroup, groups);
 106
 107     AVAHI_LLIST_HEAD(AvahiSRecordBrowser, record_browsers);
 108     AvahiHashmap *record_browser_hashmap;
 109     AVAHI_LLIST_HEAD(AvahiSHostNameResolver, host_name_resolvers);
 110     AVAHI_LLIST_HEAD(AvahiSAddressResolver, address_resolvers);
 111     AVAHI_LLIST_HEAD(AvahiSDomainBrowser, domain_browsers);
 112     AVAHI_LLIST_HEAD(AvahiSServiceTypeBrowser, service_type_browsers);
 113     AVAHI_LLIST_HEAD(AvahiSServiceBrowser, service_browsers);
 114     AVAHI_LLIST_HEAD(AvahiSServiceResolver, service_resolvers);
 115     AVAHI_LLIST_HEAD(AvahiSDNSServerBrowser, dns_server_browsers);
 116
 117     int need_entry_cleanup, need_group_cleanup, need_browser_cleanup;
 118
 119     AvahiTimeEventQueue *time_event_queue;
 120
 121     char *host_name, *host_name_fqdn, *domain_name;
 122
 123     int fd_ipv4, fd_ipv6,
 124         /* The following two sockets two are used for reflection only */
 125         fd_legacy_unicast_ipv4, fd_legacy_unicast_ipv6;
 126
 127     AvahiWatch *watch_ipv4, *watch_ipv6,
 128         *watch_legacy_unicast_ipv4, *watch_legacy_unicast_ipv6;
 129
 130     AvahiServerState state;
 131     AvahiServerCallback callback;
 132     void* userdata;
 133
 134     AvahiSEntryGroup *hinfo_entry_group;
 135     AvahiSEntryGroup *browse_domain_entry_group;
 136     unsigned n_host_rr_pending;
 137
 138     /* Used for assembling responses */
 139     AvahiRecordList *record_list;
 140
 141     /* Used for reflection of legacy unicast packets */
 142     AvahiLegacyUnicastReflectSlot **legacy_unicast_reflect_slots;
 143     uint16_t legacy_unicast_reflect_id;
 144
 145     /* The last error code */
 146     int error;
 147
 148     /* The local service cookie */
 149     uint32_t local_service_cookie;
 150
 151     AvahiMulticastLookupEngine *multicast_lookup_engine;
 152     AvahiWideAreaLookupEngine *wide_area_lookup_engine;
 153 };
 154
 155 int avahi_server_entry_match_interface(AvahiEntry *e, AvahiInterface *i);
 156
 157 void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key);
 158
 159 void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, int unicast_response, int auxiliary);
 160 void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response);
 161 void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, uint16_t port, int legacy_unicast, int is_probe);
 162
 163 void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state);
 164
 165 int avahi_entry_is_commited(AvahiEntry *e);
 166
 167 void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata);
 168
 169 void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata);
 170
 171 void avahi_server_decrease_host_rr_pending(AvahiServer *s);
 172 void avahi_server_increase_host_rr_pending(AvahiServer *s);
 173
 174 int avahi_server_set_errno(AvahiServer *s, int error);
 175
 176 #endif