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     struct timeval established_at;
  93
  94     AVAHI_LLIST_FIELDS(AvahiSEntryGroup, groups);
  95     AVAHI_LLIST_HEAD(AvahiEntry, entries);
  96 };
  97
  98 struct AvahiServer {
  99     const AvahiPoll *poll_api;
 100
 101     AvahiInterfaceMonitor *monitor;
 102     AvahiServerConfig config;
 103
 104     AVAHI_LLIST_HEAD(AvahiEntry, entries);
 105     AvahiHashmap *entries_by_key;
 106
 107     AVAHI_LLIST_HEAD(AvahiSEntryGroup, groups);
 108
 109     AVAHI_LLIST_HEAD(AvahiSRecordBrowser, record_browsers);
 110     AvahiHashmap *record_browser_hashmap;
 111     AVAHI_LLIST_HEAD(AvahiSHostNameResolver, host_name_resolvers);
 112     AVAHI_LLIST_HEAD(AvahiSAddressResolver, address_resolvers);
 113     AVAHI_LLIST_HEAD(AvahiSDomainBrowser, domain_browsers);
 114     AVAHI_LLIST_HEAD(AvahiSServiceTypeBrowser, service_type_browsers);
 115     AVAHI_LLIST_HEAD(AvahiSServiceBrowser, service_browsers);
 116     AVAHI_LLIST_HEAD(AvahiSServiceResolver, service_resolvers);
 117     AVAHI_LLIST_HEAD(AvahiSDNSServerBrowser, dns_server_browsers);
 118
 119     int need_entry_cleanup, need_group_cleanup, need_browser_cleanup;
 120
 121     AvahiTimeEventQueue *time_event_queue;
 122
 123     char *host_name, *host_name_fqdn, *domain_name;
 124
 125     int fd_ipv4, fd_ipv6,
 126         /* The following two sockets two are used for reflection only */
 127         fd_legacy_unicast_ipv4, fd_legacy_unicast_ipv6;
 128
 129     AvahiWatch *watch_ipv4, *watch_ipv6,
 130         *watch_legacy_unicast_ipv4, *watch_legacy_unicast_ipv6;
 131
 132     AvahiServerState state;
 133     AvahiServerCallback callback;
 134     void* userdata;
 135
 136     AvahiSEntryGroup *hinfo_entry_group;
 137     AvahiSEntryGroup *browse_domain_entry_group;
 138     unsigned n_host_rr_pending;
 139
 140     /* Used for assembling responses */
 141     AvahiRecordList *record_list;
 142
 143     /* Used for reflection of legacy unicast packets */
 144     AvahiLegacyUnicastReflectSlot **legacy_unicast_reflect_slots;
 145     uint16_t legacy_unicast_reflect_id;
 146
 147     /* The last error code */
 148     int error;
 149
 150     /* The local service cookie */
 151     uint32_t local_service_cookie;
 152
 153     AvahiMulticastLookupEngine *multicast_lookup_engine;
 154     AvahiWideAreaLookupEngine *wide_area_lookup_engine;
 155 };
 156
 157 int avahi_server_entry_match_interface(AvahiEntry *e, AvahiInterface *i);
 158
 159 void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key);
 160
 161 void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, int unicast_response, int auxiliary);
 162 void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response);
 163 void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, uint16_t port, int legacy_unicast, int is_probe);
 164
 165 void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state);
 166
 167 int avahi_entry_is_commited(AvahiEntry *e);
 168
 169 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);
 170
 171 void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata);
 172
 173 void avahi_server_decrease_host_rr_pending(AvahiServer *s);
 174 void avahi_server_increase_host_rr_pending(AvahiServer *s);
 175
 176 int avahi_server_set_errno(AvahiServer *s, int error);
 177
 178 #define AVAHI_CHECK_VALIDITY_RETURN_NULL(server, expression, error) { \
 179         if (!(expression)) { \
 180             avahi_server_set_errno((server), (error)); \
 181             return NULL; \
 182         } \
 183 }
 184
 185 #define AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(server, expression, error) {\
 186     if (!(expression)) { \
 187         ret = avahi_server_set_errno((server), (error)); \
 188         goto fail; \
 189     } \
 190 }
 191
 192 #endif