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Diffstat (limited to 'avahi-core/internal.h')
-rw-r--r-- | avahi-core/internal.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/avahi-core/internal.h b/avahi-core/internal.h new file mode 100644 index 0000000..47a9c84 --- /dev/null +++ b/avahi-core/internal.h @@ -0,0 +1,208 @@ +#ifndef foointernalhfoo +#define foointernalhfoo + +/* $Id$ */ + +/*** + 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. +***/ + +/** A locally registered DNS resource record */ +typedef struct AvahiEntry AvahiEntry; + +#include <avahi-common/llist.h> +#include <avahi-common/watch.h> + +#include "core.h" +#include "iface.h" +#include "prioq.h" +#include "timeeventq.h" +#include "announce.h" +#include "browse.h" +#include "dns.h" +#include "rrlist.h" +#include "hashmap.h" +#include "wide-area.h" +#include "multicast-lookup.h" +#include "dns-srv-rr.h" + +#define AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS 100 + +#define AVAHI_FLAGS_VALID(flags, max) (!((flags) & ~(max))) + +#define AVAHI_RR_HOLDOFF_MSEC 1000 +#define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000 +#define AVAHI_RR_RATE_LIMIT_COUNT 15 + +typedef struct AvahiLegacyUnicastReflectSlot AvahiLegacyUnicastReflectSlot; + +struct AvahiLegacyUnicastReflectSlot { + AvahiServer *server; + + uint16_t id, original_id; + AvahiAddress address; + uint16_t port; + int interface; + struct timeval elapse_time; + AvahiTimeEvent *time_event; +}; + +struct AvahiEntry { + AvahiServer *server; + AvahiSEntryGroup *group; + + int dead; + + AvahiPublishFlags flags; + AvahiRecord *record; + AvahiIfIndex interface; + AvahiProtocol protocol; + + AVAHI_LLIST_FIELDS(AvahiEntry, entries); + AVAHI_LLIST_FIELDS(AvahiEntry, by_key); + AVAHI_LLIST_FIELDS(AvahiEntry, by_group); + + AVAHI_LLIST_HEAD(AvahiAnnouncer, announcers); +}; + +struct AvahiSEntryGroup { + AvahiServer *server; + int dead; + + AvahiEntryGroupState state; + void* userdata; + AvahiSEntryGroupCallback callback; + + unsigned n_probing; + + unsigned n_register_try; + struct timeval register_time; + AvahiTimeEvent *register_time_event; + + struct timeval established_at; + + AVAHI_LLIST_FIELDS(AvahiSEntryGroup, groups); + AVAHI_LLIST_HEAD(AvahiEntry, entries); +}; + +struct AvahiServer { + const AvahiPoll *poll_api; + + AvahiInterfaceMonitor *monitor; + AvahiServerConfig config; + + AVAHI_LLIST_HEAD(AvahiEntry, entries); + AvahiHashmap *entries_by_key; + + AVAHI_LLIST_HEAD(AvahiSEntryGroup, groups); + + AVAHI_LLIST_HEAD(AvahiSRecordBrowser, record_browsers); + AvahiHashmap *record_browser_hashmap; + AVAHI_LLIST_HEAD(AvahiSHostNameResolver, host_name_resolvers); + AVAHI_LLIST_HEAD(AvahiSAddressResolver, address_resolvers); + AVAHI_LLIST_HEAD(AvahiSDomainBrowser, domain_browsers); + AVAHI_LLIST_HEAD(AvahiSServiceTypeBrowser, service_type_browsers); + AVAHI_LLIST_HEAD(AvahiSServiceBrowser, service_browsers); + AVAHI_LLIST_HEAD(AvahiSServiceResolver, service_resolvers); + AVAHI_LLIST_HEAD(AvahiSDNSServerBrowser, dns_server_browsers); + + int need_entry_cleanup, need_group_cleanup, need_browser_cleanup; + + AvahiTimeEventQueue *time_event_queue; + + char *host_name, *host_name_fqdn, *domain_name; + + int fd_ipv4, fd_ipv6, + /* The following two sockets two are used for reflection only */ + fd_legacy_unicast_ipv4, fd_legacy_unicast_ipv6; + + AvahiWatch *watch_ipv4, *watch_ipv6, + *watch_legacy_unicast_ipv4, *watch_legacy_unicast_ipv6; + + AvahiServerState state; + AvahiServerCallback callback; + void* userdata; + + AvahiSEntryGroup *hinfo_entry_group; + AvahiSEntryGroup *browse_domain_entry_group; + unsigned n_host_rr_pending; + + /* Used for assembling responses */ + AvahiRecordList *record_list; + + /* Used for reflection of legacy unicast packets */ + AvahiLegacyUnicastReflectSlot **legacy_unicast_reflect_slots; + uint16_t legacy_unicast_reflect_id; + + /* The last error code */ + int error; + + /* The local service cookie */ + uint32_t local_service_cookie; + + AvahiMulticastLookupEngine *multicast_lookup_engine; + AvahiWideAreaLookupEngine *wide_area_lookup_engine; +}; + +void avahi_entry_free(AvahiServer*s, AvahiEntry *e); +void avahi_entry_group_free(AvahiServer *s, AvahiSEntryGroup *g); + +void avahi_cleanup_dead_entries(AvahiServer *s); + +void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, int unicast_response, int auxiliary); +void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response); +void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, uint16_t port, int legacy_unicast, int is_probe); + +void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state); + +int avahi_entry_is_commited(AvahiEntry *e); + +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); + +void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata); + +void avahi_server_decrease_host_rr_pending(AvahiServer *s); + +int avahi_server_set_errno(AvahiServer *s, int error); + +int avahi_server_add_ptr( + AvahiServer *s, + AvahiSEntryGroup *g, + AvahiIfIndex interface, + AvahiProtocol protocol, + AvahiPublishFlags flags, + uint32_t ttl, + const char *name, + const char *dest); + + +#define AVAHI_CHECK_VALIDITY_RETURN_NULL(server, expression, error) { \ + if (!(expression)) { \ + avahi_server_set_errno((server), (error)); \ + return NULL; \ + } \ +} + +#define AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(server, expression, error) {\ + if (!(expression)) { \ + ret = avahi_server_set_errno((server), (error)); \ + goto fail; \ + } \ +} + +#endif |