-/* $Id$ */
-
/***
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
#include <config.h>
#endif
+#include <sys/types.h>
#include <sys/socket.h>
+#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <sys/utsname.h>
#include <errno.h>
#include <stdio.h>
#include <assert.h>
+#include <stdlib.h>
#include <avahi-common/domain.h>
#include <avahi-common/timeval.h>
#include <avahi-common/malloc.h>
#include <avahi-common/error.h>
-#include "server.h"
+#include "internal.h"
#include "iface.h"
#include "socket.h"
#include "browse.h"
#include "log.h"
#include "util.h"
+#include "dns-srv-rr.h"
+#include "addr-util.h"
+#include "domain-util.h"
+#include "rr-util.h"
-#define AVAHI_RR_HOLDOFF_MSEC 1000
-#define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000
-#define AVAHI_RR_RATE_LIMIT_COUNT 15
-
-static void free_entry(AvahiServer*s, AvahiEntry *e) {
- AvahiEntry *t;
-
- assert(s);
- assert(e);
-
- avahi_goodbye_entry(s, e, 1);
-
- /* Remove from linked list */
- AVAHI_LLIST_REMOVE(AvahiEntry, entries, s->entries, e);
-
- /* Remove from hash table indexed by name */
- t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
- AVAHI_LLIST_REMOVE(AvahiEntry, by_key, t, e);
- if (t)
- avahi_hashmap_replace(s->entries_by_key, t->record->key, t);
- else
- avahi_hashmap_remove(s->entries_by_key, e->record->key);
-
- /* Remove from associated group */
- if (e->group)
- AVAHI_LLIST_REMOVE(AvahiEntry, by_group, e->group->entries, e);
-
- avahi_record_unref(e->record);
- avahi_free(e);
-}
-
-static void free_group(AvahiServer *s, AvahiSEntryGroup *g) {
- assert(s);
- assert(g);
-
- while (g->entries)
- free_entry(s, g->entries);
-
- if (g->register_time_event)
- avahi_time_event_free(g->register_time_event);
-
- AVAHI_LLIST_REMOVE(AvahiSEntryGroup, groups, s->groups, g);
- avahi_free(g);
-}
-
-static void cleanup_dead(AvahiServer *s) {
- assert(s);
-
- if (s->need_group_cleanup) {
- AvahiSEntryGroup *g, *next;
-
- for (g = s->groups; g; g = next) {
- next = g->groups_next;
-
- if (g->dead)
- free_group(s, g);
- }
-
- s->need_group_cleanup = 0;
- }
-
- if (s->need_entry_cleanup) {
- AvahiEntry *e, *next;
-
- for (e = s->entries; e; e = next) {
- next = e->entries_next;
-
- if (e->dead)
- free_entry(s, e);
- }
-
- s->need_entry_cleanup = 0;
- }
-
- if (s->need_browser_cleanup)
- avahi_browser_cleanup(s);
-}
+#define AVAHI_DEFAULT_CACHE_ENTRIES_MAX 4096
static void enum_aux_records(AvahiServer *s, AvahiInterface *i, const char *name, uint16_t type, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata) {
- AvahiKey *k;
- AvahiEntry *e;
-
assert(s);
assert(i);
assert(name);
assert(callback);
- assert(type != AVAHI_DNS_TYPE_ANY);
+ if (type == AVAHI_DNS_TYPE_ANY) {
+ AvahiEntry *e;
+
+ for (e = s->entries; e; e = e->entries_next)
+ if (!e->dead &&
+ avahi_entry_is_registered(s, e, i) &&
+ e->record->key->clazz == AVAHI_DNS_CLASS_IN &&
+ avahi_domain_equal(name, e->record->key->name))
+ callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata);
+
+ } else {
+ AvahiEntry *e;
+ AvahiKey *k;
- if (!(k = avahi_key_new(name, AVAHI_DNS_CLASS_IN, type)))
- return; /** OOM */
+ if (!(k = avahi_key_new(name, AVAHI_DNS_CLASS_IN, type)))
+ return; /** OOM */
- for (e = avahi_hashmap_lookup(s->entries_by_key, k); e; e = e->by_key_next)
- if (!e->dead && avahi_entry_is_registered(s, e, i))
- callback(s, e->record, e->flags & AVAHI_ENTRY_UNIQUE, userdata);
+ for (e = avahi_hashmap_lookup(s->entries_by_key, k); e; e = e->by_key_next)
+ if (!e->dead && avahi_entry_is_registered(s, e, i))
+ callback(s, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, userdata);
- avahi_key_unref(k);
+ avahi_key_unref(k);
+ }
}
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) {
assert(i);
assert(r);
assert(callback);
-
+
+ /* Call the specified callback far all records referenced by the one specified in *r */
+
if (r->key->clazz == AVAHI_DNS_CLASS_IN) {
if (r->key->type == AVAHI_DNS_TYPE_PTR) {
enum_aux_records(s, i, r->data.ptr.name, AVAHI_DNS_TYPE_SRV, callback, userdata);
} else if (r->key->type == AVAHI_DNS_TYPE_SRV) {
enum_aux_records(s, i, r->data.srv.name, AVAHI_DNS_TYPE_A, callback, userdata);
enum_aux_records(s, i, r->data.srv.name, AVAHI_DNS_TYPE_AAAA, callback, userdata);
- }
+ } else if (r->key->type == AVAHI_DNS_TYPE_CNAME)
+ enum_aux_records(s, i, r->data.cname.name, AVAHI_DNS_TYPE_ANY, callback, userdata);
}
}
assert(i);
assert(e);
- avahi_record_list_push(s->record_list, e->record, e->flags & AVAHI_ENTRY_UNIQUE, unicast_response, auxiliary);
+ avahi_record_list_push(s->record_list, e->record, e->flags & AVAHI_PUBLISH_UNIQUE, unicast_response, auxiliary);
}
void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response) {
- AvahiEntry *e;
-/* char *txt; */
-
assert(s);
assert(i);
assert(k);
-/* avahi_log_debug("Posting responses matching [%s]", txt = avahi_key_to_string(k)); */
-/* avahi_free(txt); */
+ /* Push all records that match the specified key to the record list */
if (avahi_key_is_pattern(k)) {
+ AvahiEntry *e;
/* Handle ANY query */
-
+
for (e = s->entries; e; e = e->entries_next)
if (!e->dead && avahi_key_pattern_match(k, e->record->key) && avahi_entry_is_registered(s, e, i))
avahi_server_prepare_response(s, i, e, unicast_response, 0);
} else {
+ AvahiEntry *e;
/* Handle all other queries */
-
+
for (e = avahi_hashmap_lookup(s->entries_by_key, k); e; e = e->by_key_next)
if (!e->dead && avahi_entry_is_registered(s, e, i))
avahi_server_prepare_response(s, i, e, unicast_response, 0);
}
+
+ /* Look for CNAME records */
+
+ if ((k->clazz == AVAHI_DNS_CLASS_IN || k->clazz == AVAHI_DNS_CLASS_ANY)
+ && k->type != AVAHI_DNS_TYPE_CNAME && k->type != AVAHI_DNS_TYPE_ANY) {
+
+ AvahiKey *cname_key;
+
+ if (!(cname_key = avahi_key_new(k->name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_CNAME)))
+ return;
+
+ avahi_server_prepare_matching_responses(s, i, cname_key, unicast_response);
+ avahi_key_unref(cname_key);
+ }
}
static void withdraw_entry(AvahiServer *s, AvahiEntry *e) {
assert(s);
assert(e);
-
+
+ /* Withdraw the specified entry, and if is part of an entry group,
+ * put that into COLLISION state */
+
+ if (e->dead)
+ return;
+
if (e->group) {
AvahiEntry *k;
-
- for (k = e->group->entries; k; k = k->by_group_next) {
+
+ for (k = e->group->entries; k; k = k->by_group_next)
if (!k->dead) {
- avahi_goodbye_entry(s, k, 0);
+ avahi_goodbye_entry(s, k, 0, 1);
k->dead = 1;
}
- }
e->group->n_probing = 0;
avahi_s_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION);
} else {
- avahi_goodbye_entry(s, e, 0);
+ avahi_goodbye_entry(s, e, 0, 1);
e->dead = 1;
}
static void withdraw_rrset(AvahiServer *s, AvahiKey *key) {
AvahiEntry *e;
-
+
assert(s);
assert(key);
- for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next)
- if (!e->dead)
- withdraw_entry(s, e);
+ /* Withdraw an entry RRSset */
+
+ for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next)
+ withdraw_entry(s, e);
}
static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
AvahiEntry *e, *n;
- char *t;
int ours = 0, won = 0, lost = 0;
-
+
assert(s);
assert(record);
assert(i);
- t = avahi_record_to_string(record);
-
-/* avahi_log_debug("incoming_probe()"); */
+ /* Handle incoming probes and check if they conflict our own probes */
for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = n) {
int cmp;
if (e->dead)
continue;
-
+
if ((cmp = avahi_record_lexicographical_compare(e->record, record)) == 0) {
ours = 1;
break;
} else {
-
+
if (avahi_entry_is_probing(s, e, i)) {
if (cmp > 0)
won = 1;
}
}
-
if (!ours) {
+ char *t = avahi_record_to_string(record);
if (won)
- avahi_log_debug("Recieved conflicting probe [%s]. Local host won.", t);
+ avahi_log_debug("Received conflicting probe [%s]. Local host won.", t);
else if (lost) {
- avahi_log_debug("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
+ avahi_log_debug("Received conflicting probe [%s]. Local host lost. Withdrawing.", t);
withdraw_rrset(s, record->key);
- }/* else */
-/* avahi_log_debug("Not conflicting probe"); */
- }
+ }
- avahi_free(t);
+ avahi_free(t);
+ }
}
-static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, int unique, const AvahiAddress *a) {
+static int handle_conflict(AvahiServer *s, AvahiInterface *i, AvahiRecord *record, int unique) {
int valid = 1, ours = 0, conflict = 0, withdraw_immediately = 0;
AvahiEntry *e, *n, *conflicting_entry = NULL;
-
+
assert(s);
assert(i);
assert(record);
-
-/* avahi_log_debug("CHECKING FOR CONFLICT: [%s]", t); */
+ /* Check whether an incoming record conflicts with one of our own */
for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = n) {
n = e->by_key_next;
- if (e->dead || (!(e->flags & AVAHI_ENTRY_UNIQUE) && !unique))
+ if (e->dead)
+ continue;
+
+ /* Check if the incoming is a goodbye record */
+ if (avahi_record_is_goodbye(record)) {
+
+ if (avahi_record_equal_no_ttl(e->record, record)) {
+ char *t;
+
+ /* Refresh */
+ t = avahi_record_to_string(record);
+ avahi_log_debug("Received goodbye record for one of our records [%s]. Refreshing.", t);
+ avahi_server_prepare_matching_responses(s, i, e->record->key, 0);
+
+ valid = 0;
+ avahi_free(t);
+ break;
+ }
+
+ /* If the goodybe packet doesn't match one of our own RRs, we simply ignore it. */
+ continue;
+ }
+
+ if (!(e->flags & AVAHI_PUBLISH_UNIQUE) && !unique)
continue;
/* Either our entry or the other is intended to be unique, so let's check */
-
+
if (avahi_record_equal_no_ttl(e->record, record)) {
ours = 1; /* We have an identical record, so this is no conflict */
-
+
/* Check wheter there is a TTL conflict */
if (record->ttl <= e->record->ttl/2 &&
avahi_entry_is_registered(s, e, i)) {
char *t;
/* Refresh */
- t = avahi_record_to_string(record);
-
- avahi_log_debug("Recieved record with bad TTL [%s]. Refreshing.", t);
+ t = avahi_record_to_string(record);
+
+ avahi_log_debug("Received record with bad TTL [%s]. Refreshing.", t);
avahi_server_prepare_matching_responses(s, i, e->record->key, 0);
valid = 0;
-
+
avahi_free(t);
}
-
+
/* There's no need to check the other entries of this RRset */
break;
} else {
-
+
if (avahi_entry_is_registered(s, e, i)) {
-
+
/* A conflict => we have to return to probe mode */
conflict = 1;
conflicting_entry = e;
}
}
-/* avahi_log_debug("ours=%i conflict=%i", ours, conflict); */
-
if (!ours && conflict) {
char *t;
-
+
valid = 0;
- t = avahi_record_to_string(record);
-
+ t = avahi_record_to_string(record);
+
if (withdraw_immediately) {
- avahi_log_debug("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
+ avahi_log_debug("Received conflicting record [%s] with local record to be. Withdrawing.", t);
withdraw_rrset(s, record->key);
} else {
assert(conflicting_entry);
- avahi_log_debug("Recieved conflicting record [%s]. Resetting our record.", t);
+ avahi_log_debug("Received conflicting record [%s]. Resetting our record.", t);
avahi_entry_return_to_initial_state(s, conflicting_entry, i);
/* Local unique records are returned to probing
assert(s);
assert(r);
assert(unicast_response);
-
+
avahi_record_list_push(s->record_list, r, flush_cache, *unicast_response, 1);
}
AvahiDnsPacket *reply;
AvahiRecord *r;
- if (!(reply = avahi_dns_packet_new_reply(p, 512 /* unicast DNS maximum packet size is 512 */ , 1, 1)))
+ if (!(reply = avahi_dns_packet_new_reply(p, 512 + AVAHI_DNS_PACKET_EXTRA_SIZE /* unicast DNS maximum packet size is 512 */ , 1, 1)))
return; /* OOM */
-
+
while ((r = avahi_record_list_next(s->record_list, NULL, NULL, NULL))) {
append_aux_records_to_list(s, i, r, 0);
-
+
if (avahi_dns_packet_append_record(reply, r, 0, 10))
avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
else {
immediately, because known answer suppression records might be
contained in later packets */
int tc = p && !!(avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_FLAGS) & AVAHI_DNS_FLAG_TC);
-
+
while ((r = avahi_record_list_next(s->record_list, &flush_cache, &unicast_response, &auxiliary))) {
-
- if (!avahi_interface_post_response(i, r, flush_cache, a, immediately || (flush_cache && !tc && !auxiliary)) && unicast_response) {
- append_aux_records_to_list(s, i, r, unicast_response);
-
+ int im = immediately;
+
+ /* Only send the response immediately if it contains a
+ * unique entry AND it is not in reply to a truncated
+ * packet AND it is not an auxiliary record AND all other
+ * responses for this record are unique too. */
+
+ if (flush_cache && !tc && !auxiliary && avahi_record_list_all_flush_cache(s->record_list))
+ im = 1;
+
+ if (!avahi_interface_post_response(i, r, flush_cache, a, im) && unicast_response) {
+
/* Due to some reasons the record has not been scheduled.
* The client requested an unicast response in that
* case. Therefore we prepare such a response */
+ append_aux_records_to_list(s, i, r, unicast_response);
+
for (;;) {
-
+
if (!reply) {
assert(p);
if (!(reply = avahi_dns_packet_new_reply(p, i->hardware->mtu, 0, 0)))
break; /* OOM */
}
-
+
if (avahi_dns_packet_append_record(reply, r, flush_cache, 0)) {
/* Appending this record succeeded, so incremeant
* the specific header field, and return to the caller */
-
- avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
+ avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
break;
}
avahi_dns_packet_free(reply);
size = avahi_record_get_estimate_size(r) + AVAHI_DNS_PACKET_HEADER_SIZE;
- if (size > AVAHI_DNS_PACKET_MAX_SIZE)
- size = AVAHI_DNS_PACKET_MAX_SIZE;
- if (!(reply = avahi_dns_packet_new_reply(p, size, 0, 1)))
+ if (!(reply = avahi_dns_packet_new_reply(p, size + AVAHI_DNS_PACKET_EXTRA_SIZE, 0, 1)))
break; /* OOM */
- if (!avahi_dns_packet_append_record(reply, r, flush_cache, 0)) {
+ if (avahi_dns_packet_append_record(reply, r, flush_cache, 0)) {
+
+ /* Appending this record succeeded, so incremeant
+ * the specific header field, and return to the caller */
+
+ avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
+ break;
+
+ } else {
+
+ /* We completely fucked up, there's
+ * nothing we can do. The RR just doesn't
+ * fit in. Let's ignore it. */
+
char *t;
avahi_dns_packet_free(reply);
+ reply = NULL;
t = avahi_record_to_string(r);
avahi_log_warn("Record [%s] too large, doesn't fit in any packet!", t);
avahi_free(t);
break;
- } else
- avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
+ }
}
/* Appending the record didn't succeeed, so let's send this packet, and create a new one */
}
if (reply) {
- if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0)
+ if (avahi_dns_packet_get_field(reply, AVAHI_DNS_FIELD_ANCOUNT) != 0)
avahi_interface_send_packet_unicast(i, reply, a, port);
avahi_dns_packet_free(reply);
}
avahi_record_list_flush(s->record_list);
}
-
static void reflect_response(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, int flush_cache) {
AvahiInterface *j;
-
+
assert(s);
assert(i);
assert(r);
static void* reflect_cache_walk_callback(AvahiCache *c, AvahiKey *pattern, AvahiCacheEntry *e, void* userdata) {
AvahiServer *s = userdata;
+ AvahiRecord* r;
assert(c);
assert(pattern);
assert(e);
assert(s);
+ /* Don't reflect cache entry with ipv6 link-local addresses. */
+ r = e->record;
+ if ((r->key->type == AVAHI_DNS_TYPE_AAAA) &&
+ (r->data.aaaa.address.address[0] == 0xFE) &&
+ (r->data.aaaa.address.address[1] == 0x80))
+ return NULL;
+
avahi_record_list_push(s->record_list, e->record, e->cache_flush, 0, 0);
return NULL;
}
static void reflect_query(AvahiServer *s, AvahiInterface *i, AvahiKey *k) {
AvahiInterface *j;
-
+
assert(s);
assert(i);
assert(k);
for (j = s->monitor->interfaces; j; j = j->interface_next)
if (j != i && (s->config.reflect_ipv || j->protocol == i->protocol)) {
/* Post the query to other networks */
- avahi_interface_post_query(j, k, 1);
+ avahi_interface_post_query(j, k, 1, NULL);
/* Reply from caches of other network. This is needed to
* "work around" known answer suppression. */
static void reflect_probe(AvahiServer *s, AvahiInterface *i, AvahiRecord *r) {
AvahiInterface *j;
-
+
assert(s);
assert(i);
assert(r);
avahi_interface_post_probe(j, r, 1);
}
-static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, uint16_t port, int legacy_unicast) {
+static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, uint16_t port, int legacy_unicast, int from_local_iface) {
size_t n;
int is_probe;
-
+
assert(s);
assert(p);
assert(i);
assert(a);
-/* avahi_log_debug("query"); */
-
assert(avahi_record_list_is_empty(s->record_list));
is_probe = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) > 0;
-
+
/* Handle the questions */
for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT); n > 0; n --) {
AvahiKey *key;
int unicast_response = 0;
if (!(key = avahi_dns_packet_consume_key(p, &unicast_response))) {
- avahi_log_warn("Packet too short (1)");
+ avahi_log_warn(__FILE__": Packet too short or invalid while reading question key. (Maybe a UTF-8 problem?)");
goto fail;
}
- if (!legacy_unicast)
+ if (!legacy_unicast && !from_local_iface) {
reflect_query(s, i, key);
+ if (!unicast_response)
+ avahi_cache_start_poof(i->cache, key, a);
+ }
if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 &&
!(avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_FLAGS) & AVAHI_DNS_FLAG_TC))
/* Allow our own queries to be suppressed by incoming
* queries only when they do not include known answers */
avahi_query_scheduler_incoming(i->query_scheduler, key);
-
+
avahi_server_prepare_matching_responses(s, i, key, unicast_response);
avahi_key_unref(key);
}
- /* Known Answer Suppression */
- for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) {
- AvahiRecord *record;
- int unique = 0;
+ if (!legacy_unicast) {
- if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
- avahi_log_warn("Packet too short (2)");
- goto fail;
- }
+ /* Known Answer Suppression */
+ for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT); n > 0; n --) {
+ AvahiRecord *record;
+ int unique = 0;
+
+ if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
+ avahi_log_warn(__FILE__": Packet too short or invalid while reading known answer record. (Maybe a UTF-8 problem?)");
+ goto fail;
+ }
- if (handle_conflict(s, i, record, unique, a)) {
avahi_response_scheduler_suppress(i->response_scheduler, record, a);
avahi_record_list_drop(s->record_list, record);
+ avahi_cache_stop_poof(i->cache, record, a);
+
+ avahi_record_unref(record);
}
-
- avahi_record_unref(record);
- }
- /* Probe record */
- for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) {
- AvahiRecord *record;
- int unique = 0;
+ /* Probe record */
+ for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT); n > 0; n --) {
+ AvahiRecord *record;
+ int unique = 0;
- if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
- avahi_log_warn("Packet too short (3)");
- goto fail;
- }
+ if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
+ avahi_log_warn(__FILE__": Packet too short or invalid while reading probe record. (Maybe a UTF-8 problem?)");
+ goto fail;
+ }
- if (!avahi_key_is_pattern(record->key)) {
- reflect_probe(s, i, record);
- incoming_probe(s, record, i);
+ if (!avahi_key_is_pattern(record->key)) {
+ if (!from_local_iface)
+ reflect_probe(s, i, record);
+ incoming_probe(s, record, i);
+ }
+
+ avahi_record_unref(record);
}
-
- avahi_record_unref(record);
}
if (!avahi_record_list_is_empty(s->record_list))
avahi_server_generate_response(s, i, p, a, port, legacy_unicast, is_probe);
return;
-
+
fail:
avahi_record_list_flush(s->record_list);
}
-static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
+static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, int from_local_iface) {
unsigned n;
-
+
assert(s);
assert(p);
assert(i);
assert(a);
-/* avahi_log_debug("response"); */
-
for (n = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) +
avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT); n > 0; n--) {
AvahiRecord *record;
int cache_flush = 0;
-/* char *txt; */
-
+
if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) {
- avahi_log_warn("Packet too short (4)");
+ avahi_log_warn(__FILE__": Packet too short or invalid while reading response record. (Maybe a UTF-8 problem?)");
break;
}
if (!avahi_key_is_pattern(record->key)) {
-/* avahi_log_debug("Handling response: %s", txt = avahi_record_to_string(record)); */
-/* avahi_free(txt); */
-
- if (handle_conflict(s, i, record, cache_flush, a)) {
- reflect_response(s, i, record, cache_flush);
+ if (handle_conflict(s, i, record, cache_flush)) {
+ if (!from_local_iface && !avahi_record_is_link_local_address(record))
+ reflect_response(s, i, record, cache_flush);
avahi_cache_update(i->cache, record, cache_flush, a);
avahi_response_scheduler_incoming(i->response_scheduler, record, cache_flush);
}
}
-
+
avahi_record_unref(record);
}
/* If the incoming response contained a conflicting record, some
- records have been scheduling for sending. We need to flush them
+ records have been scheduled for sending. We need to flush them
here. */
if (!avahi_record_list_is_empty(s->record_list))
avahi_server_generate_response(s, i, NULL, NULL, 0, 0, 1);
static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) {
unsigned n, idx = (unsigned) -1;
AvahiLegacyUnicastReflectSlot *slot;
-
+
assert(s);
if (!s->legacy_unicast_reflect_slots)
- s->legacy_unicast_reflect_slots = avahi_new0(AvahiLegacyUnicastReflectSlot*, AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS);
+ s->legacy_unicast_reflect_slots = avahi_new0(AvahiLegacyUnicastReflectSlot*, AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX);
+
+ for (n = 0; n < AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; n++, s->legacy_unicast_reflect_id++) {
+ idx = s->legacy_unicast_reflect_id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX;
- for (n = 0; n < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; n++, s->legacy_unicast_reflect_id++) {
- idx = s->legacy_unicast_reflect_id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
-
if (!s->legacy_unicast_reflect_slots[idx])
break;
}
if (!(slot = avahi_new(AvahiLegacyUnicastReflectSlot, 1)))
return NULL; /* OOM */
- slot = s->legacy_unicast_reflect_slots[idx];
+ s->legacy_unicast_reflect_slots[idx] = slot;
slot->id = s->legacy_unicast_reflect_id++;
slot->server = s;
+
return slot;
}
assert(s);
assert(slot);
- idx = slot->id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+ idx = slot->id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX;
assert(s->legacy_unicast_reflect_slots[idx] == slot);
avahi_time_event_free(slot->time_event);
-
+
avahi_free(slot);
s->legacy_unicast_reflect_slots[idx] = NULL;
}
if (!s->legacy_unicast_reflect_slots)
return;
- for (idx = 0; idx < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; idx ++)
+ for (idx = 0; idx < AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX; idx ++)
if (s->legacy_unicast_reflect_slots[idx])
deallocate_slot(s, s->legacy_unicast_reflect_slots[idx]);
static AvahiLegacyUnicastReflectSlot* find_slot(AvahiServer *s, uint16_t id) {
unsigned idx;
-
+
assert(s);
if (!s->legacy_unicast_reflect_slots)
return NULL;
-
- idx = id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+
+ idx = id % AVAHI_LEGACY_UNICAST_REFLECT_SLOTS_MAX;
if (!s->legacy_unicast_reflect_slots[idx] || s->legacy_unicast_reflect_slots[idx]->id != id)
return NULL;
assert(i);
assert(a);
assert(port > 0);
- assert(i->protocol == a->family);
-
+ assert(i->protocol == a->proto);
+
if (!s->config.enable_reflector)
return;
-/* avahi_log_debug("legacy unicast reflector"); */
-
/* Reflecting legacy unicast queries is a little more complicated
than reflecting normal queries, since we must route the
responses back to the right client. Therefore we must store
avahi_elapse_time(&slot->elapse_time, 2000, 0);
slot->time_event = avahi_time_event_new(s->time_event_queue, &slot->elapse_time, legacy_unicast_reflect_slot_timeout, slot);
- /* Patch the packet with our new locally generatedt id */
+ /* Patch the packet with our new locally generatet id */
avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id);
-
+
for (j = s->monitor->interfaces; j; j = j->interface_next)
- if (avahi_interface_relevant(j) &&
+ if (j->announcing &&
j != i &&
(s->config.reflect_ipv || j->protocol == i->protocol)) {
if (j->protocol == AVAHI_PROTO_INET && s->fd_legacy_unicast_ipv4 >= 0) {
- avahi_send_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, j->hardware->index, p, NULL, 0);
- } else if (j->protocol == AVAHI_PROTO_INET6 && s->fd_legacy_unicast_ipv6 >= 0)
- avahi_send_dns_packet_ipv6(s->fd_legacy_unicast_ipv6, j->hardware->index, p, NULL, 0);
+ avahi_send_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, j->hardware->index, p, NULL, NULL, 0);
+ } else if (j->protocol == AVAHI_PROTO_INET6 && s->fd_legacy_unicast_ipv6 >= 0)
+ avahi_send_dns_packet_ipv6(s->fd_legacy_unicast_ipv6, j->hardware->index, p, NULL, NULL, 0);
}
/* Reset the id */
avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->original_id);
}
-static int originates_from_local_legacy_unicast_socket(AvahiServer *s, const struct sockaddr *sa) {
- AvahiAddress a;
+static int originates_from_local_legacy_unicast_socket(AvahiServer *s, const AvahiAddress *address, uint16_t port) {
assert(s);
- assert(sa);
+ assert(address);
+ assert(port > 0);
if (!s->config.enable_reflector)
return 0;
-
- avahi_address_from_sockaddr(sa, &a);
- if (!avahi_address_is_local(s->monitor, &a))
+ if (!avahi_address_is_local(s->monitor, address))
return 0;
-
- if (sa->sa_family == AF_INET && s->fd_legacy_unicast_ipv4 >= 0) {
+
+ if (address->proto == AVAHI_PROTO_INET && s->fd_legacy_unicast_ipv4 >= 0) {
struct sockaddr_in lsa;
socklen_t l = sizeof(lsa);
-
- if (getsockname(s->fd_legacy_unicast_ipv4, &lsa, &l) != 0)
+
+ if (getsockname(s->fd_legacy_unicast_ipv4, (struct sockaddr*) &lsa, &l) != 0)
avahi_log_warn("getsockname(): %s", strerror(errno));
else
- return lsa.sin_port == ((const struct sockaddr_in*) sa)->sin_port;
+ return avahi_port_from_sockaddr((struct sockaddr*) &lsa) == port;
}
- if (sa->sa_family == AF_INET6 && s->fd_legacy_unicast_ipv6 >= 0) {
+ if (address->proto == AVAHI_PROTO_INET6 && s->fd_legacy_unicast_ipv6 >= 0) {
struct sockaddr_in6 lsa;
socklen_t l = sizeof(lsa);
- if (getsockname(s->fd_legacy_unicast_ipv6, &lsa, &l) != 0)
+ if (getsockname(s->fd_legacy_unicast_ipv6, (struct sockaddr*) &lsa, &l) != 0)
avahi_log_warn("getsockname(): %s", strerror(errno));
else
- return lsa.sin6_port == ((const struct sockaddr_in6*) sa)->sin6_port;
+ return avahi_port_from_sockaddr((struct sockaddr*) &lsa) == port;
}
return 0;
AvahiAddress b;
assert(a);
- avahi_address_parse(a->family == AVAHI_PROTO_INET ? AVAHI_IPV4_MCAST_GROUP : AVAHI_IPV6_MCAST_GROUP, a->family, &b);
+ avahi_address_parse(a->proto == AVAHI_PROTO_INET ? AVAHI_IPV4_MCAST_GROUP : AVAHI_IPV6_MCAST_GROUP, a->proto, &b);
return avahi_address_cmp(a, &b) == 0;
}
-static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, AvahiAddress *dest, AvahiIfIndex iface, int ttl) {
+static int originates_from_local_iface(AvahiServer *s, AvahiIfIndex iface, const AvahiAddress *a, uint16_t port) {
+ assert(s);
+ assert(iface != AVAHI_IF_UNSPEC);
+ assert(a);
+
+ /* If it isn't the MDNS port it can't be generated by us */
+ if (port != AVAHI_MDNS_PORT)
+ return 0;
+
+ return avahi_interface_has_address(s->monitor, iface, a);
+}
+
+static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const AvahiAddress *src_address, uint16_t port, const AvahiAddress *dst_address, AvahiIfIndex iface, int ttl) {
AvahiInterface *i;
- AvahiAddress a;
- uint16_t port;
-
+ int from_local_iface = 0;
+
assert(s);
assert(p);
- assert(sa);
- assert(dest);
+ assert(src_address);
+ assert(dst_address);
assert(iface > 0);
+ assert(src_address->proto == dst_address->proto);
- if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family)) ||
- !avahi_interface_relevant(i)) {
- avahi_log_warn("Recieved packet from invalid interface.");
+ if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, src_address->proto)) ||
+ !i->announcing) {
+ avahi_log_warn("Received packet from invalid interface.");
return;
}
-/* avahi_log_debug("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */
+ if (port <= 0) {
+ /* This fixes RHBZ #475394 */
+ avahi_log_warn("Received packet from invalid source port %u.", (unsigned) port);
+ return;
+ }
- port = avahi_port_from_sockaddr(sa);
- avahi_address_from_sockaddr(sa, &a);
-
- if (avahi_address_is_ipv4_in_ipv6(&a))
+ if (avahi_address_is_ipv4_in_ipv6(src_address))
/* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
return;
- if (originates_from_local_legacy_unicast_socket(s, sa))
+ if (originates_from_local_legacy_unicast_socket(s, src_address, port))
/* This originates from our local reflector, so let's ignore it */
return;
- if (avahi_dns_packet_is_valid(p) < 0) {
- avahi_log_warn("Recieved invalid packet.");
+ /* We don't want to reflect local traffic, so we check if this packet is generated locally. */
+ if (s->config.enable_reflector)
+ from_local_iface = originates_from_local_iface(s, iface, src_address, port);
+
+ if (avahi_dns_packet_check_valid_multicast(p) < 0) {
+ avahi_log_warn("Received invalid packet.");
return;
}
if (avahi_dns_packet_is_query(p)) {
int legacy_unicast = 0;
- if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT) != 0) {
- avahi_log_warn("Invalid query packet.");
- return;
- }
+ /* For queries EDNS0 might allow ARCOUNT != 0. We ignore the
+ * AR section completely here, so far. Until the day we add
+ * EDNS0 support. */
if (port != AVAHI_MDNS_PORT) {
/* Legacy Unicast */
avahi_log_warn("Invalid legacy unicast query packet.");
return;
}
-
+
legacy_unicast = 1;
}
if (legacy_unicast)
- reflect_legacy_unicast_query_packet(s, p, i, &a, port);
-
- handle_query_packet(s, p, i, &a, port, legacy_unicast);
-
-/* avahi_log_debug("Handled query"); */
+ reflect_legacy_unicast_query_packet(s, p, i, src_address, port);
+
+ handle_query_packet(s, p, i, src_address, port, legacy_unicast, from_local_iface);
+
} else {
+ char t[AVAHI_ADDRESS_STR_MAX];
+
if (port != AVAHI_MDNS_PORT) {
- avahi_log_warn("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
+ avahi_log_warn("Received response from host %s with invalid source port %u on interface '%s.%i'", avahi_address_snprint(t, sizeof(t), src_address), port, i->hardware->name, i->protocol);
return;
}
if (ttl != 255 && s->config.check_response_ttl) {
- avahi_log_warn("Recieved response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol);
+ avahi_log_warn("Received response from host %s with invalid TTL %u on interface '%s.%i'.", avahi_address_snprint(t, sizeof(t), src_address), ttl, i->hardware->name, i->protocol);
return;
}
- if (!is_mdns_mcast_address(dest) &&
- !avahi_interface_address_on_link(i, &a)) {
- avahi_log_warn("Recivied non-local response on interface '%s.%i'.", i->hardware->name, i->protocol);
+ if (!is_mdns_mcast_address(dst_address) &&
+ !avahi_interface_address_on_link(i, src_address)) {
+
+ avahi_log_warn("Received non-local response from host %s on interface '%s.%i'.", avahi_address_snprint(t, sizeof(t), src_address), i->hardware->name, i->protocol);
return;
}
-
+
if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_QDCOUNT) != 0 ||
avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) == 0 ||
avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0) {
- avahi_log_warn("Invalid response packet.");
+
+ avahi_log_warn("Invalid response packet from host %s.", avahi_address_snprint(t, sizeof(t), src_address));
return;
}
- handle_response_packet(s, p, i, &a);
-/* avahi_log_debug("Handled response"); */
+ handle_response_packet(s, p, i, src_address, from_local_iface);
}
}
-static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, AvahiIfIndex iface, int ttl) {
- AvahiInterface *i, *j;
- AvahiAddress a;
- uint16_t port;
+static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p) {
+ AvahiInterface *j;
AvahiLegacyUnicastReflectSlot *slot;
-
+
assert(s);
assert(p);
- assert(sa);
- assert(iface > 0);
-
- if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family)) ||
- !avahi_interface_relevant(i)) {
- avahi_log_warn("Recieved packet from invalid interface.");
- return;
- }
-
-/* avahi_log_debug("new legacy unicast packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */
-
- port = avahi_port_from_sockaddr(sa);
- avahi_address_from_sockaddr(sa, &a);
-
- if (avahi_address_is_ipv4_in_ipv6(&a))
- /* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
- return;
- if (avahi_dns_packet_is_valid(p) < 0 || avahi_dns_packet_is_query(p)) {
- avahi_log_warn("Recieved invalid packet.");
+ if (avahi_dns_packet_check_valid(p) < 0 || avahi_dns_packet_is_query(p)) {
+ avahi_log_warn("Received invalid packet.");
return;
}
if (!(slot = find_slot(s, avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ID)))) {
- avahi_log_warn("Recieved legacy unicast response with unknown id");
+ avahi_log_warn("Received legacy unicast response with unknown id");
return;
}
- if (!(j = avahi_interface_monitor_get_interface(s->monitor, slot->interface, slot->address.family)) ||
- !avahi_interface_relevant(j))
+ if (!(j = avahi_interface_monitor_get_interface(s->monitor, slot->interface, slot->address.proto)) ||
+ !j->announcing)
return;
/* Patch the original ID into this response */
avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id);
}
-static void socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, void *userdata) {
+static void mcast_socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, void *userdata) {
AvahiServer *s = userdata;
- AvahiAddress dest;
- AvahiDnsPacket *p;
+ AvahiAddress dest, src;
+ AvahiDnsPacket *p = NULL;
AvahiIfIndex iface;
+ uint16_t port;
uint8_t ttl;
- struct sockaddr_in sa;
- struct sockaddr_in6 sa6;
assert(w);
assert(fd >= 0);
+ assert(events & AVAHI_WATCH_IN);
- if (events & AVAHI_WATCH_IN) {
-
- if (fd == s->fd_ipv4) {
- dest.family = AVAHI_PROTO_INET;
- if ((p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &dest.data.ipv4, &iface, &ttl))) {
- dispatch_packet(s, p, (struct sockaddr*) &sa, &dest, iface, ttl);
- avahi_dns_packet_free(p);
- }
- } else if (fd == s->fd_ipv6) {
- dest.family = AVAHI_PROTO_INET6;
+ if (fd == s->fd_ipv4) {
+ dest.proto = src.proto = AVAHI_PROTO_INET;
+ p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &src.data.ipv4, &port, &dest.data.ipv4, &iface, &ttl);
+ } else {
+ assert(fd == s->fd_ipv6);
+ dest.proto = src.proto = AVAHI_PROTO_INET6;
+ p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &src.data.ipv6, &port, &dest.data.ipv6, &iface, &ttl);
+ }
- if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &dest.data.ipv6, &iface, &ttl))) {
- dispatch_packet(s, p, (struct sockaddr*) &sa6, &dest, iface, ttl);
- avahi_dns_packet_free(p);
- }
- } else if (fd == s->fd_legacy_unicast_ipv4) {
- dest.family = AVAHI_PROTO_INET;
-
- if ((p = avahi_recv_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, &sa, &dest.data.ipv4, &iface, &ttl))) {
- dispatch_legacy_unicast_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
- avahi_dns_packet_free(p);
- }
- } else if (fd == s->fd_legacy_unicast_ipv6) {
- dest.family = AVAHI_PROTO_INET6;
-
- if ((p = avahi_recv_dns_packet_ipv6(s->fd_legacy_unicast_ipv6, &sa6, &dest.data.ipv6, &iface, &ttl))) {
- dispatch_legacy_unicast_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
- avahi_dns_packet_free(p);
- }
- }
+ if (p) {
+ if (iface == AVAHI_IF_UNSPEC)
+ iface = avahi_find_interface_for_address(s->monitor, &dest);
- cleanup_dead(s);
- } else {
- assert(0);
+ if (iface != AVAHI_IF_UNSPEC)
+ dispatch_packet(s, p, &src, port, &dest, iface, ttl);
+ else
+ avahi_log_error("Incoming packet received on address that isn't local.");
+
+ avahi_dns_packet_free(p);
+
+ avahi_cleanup_dead_entries(s);
+ }
+}
+
+static void legacy_unicast_socket_event(AvahiWatch *w, int fd, AvahiWatchEvent events, void *userdata) {
+ AvahiServer *s = userdata;
+ AvahiDnsPacket *p = NULL;
+
+ assert(w);
+ assert(fd >= 0);
+ assert(events & AVAHI_WATCH_IN);
+
+ if (fd == s->fd_legacy_unicast_ipv4)
+ p = avahi_recv_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, NULL, NULL, NULL, NULL, NULL);
+ else {
+ assert(fd == s->fd_legacy_unicast_ipv6);
+ p = avahi_recv_dns_packet_ipv6(s->fd_legacy_unicast_ipv6, NULL, NULL, NULL, NULL, NULL);
+ }
+
+ if (p) {
+ dispatch_legacy_unicast_packet(s, p);
+ avahi_dns_packet_free(p);
+
+ avahi_cleanup_dead_entries(s);
}
}
if (s->state == state)
return;
-
+
s->state = state;
+ avahi_interface_monitor_update_rrs(s->monitor, 0);
+
if (s->callback)
s->callback(s, state, s->userdata);
}
if (s->browse_domain_entry_group)
avahi_s_entry_group_reset(s->browse_domain_entry_group);
- avahi_update_host_rrs(s->monitor, 1);
+ avahi_interface_monitor_update_rrs(s->monitor, 1);
s->n_host_rr_pending = 0;
}
void avahi_server_decrease_host_rr_pending(AvahiServer *s) {
assert(s);
-
+
assert(s->n_host_rr_pending > 0);
if (--s->n_host_rr_pending == 0)
server_set_state(s, AVAHI_SERVER_RUNNING);
}
-void avahi_server_increase_host_rr_pending(AvahiServer *s) {
- assert(s);
-
- s->n_host_rr_pending ++;
-}
-
-void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata) {
+void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, AVAHI_GCC_UNUSED void *userdata) {
assert(s);
assert(g);
if (state == AVAHI_ENTRY_GROUP_REGISTERING &&
s->state == AVAHI_SERVER_REGISTERING)
- avahi_server_increase_host_rr_pending(s);
-
+ s->n_host_rr_pending ++;
+
else if (state == AVAHI_ENTRY_GROUP_COLLISION &&
(s->state == AVAHI_SERVER_REGISTERING || s->state == AVAHI_SERVER_RUNNING)) {
withdraw_host_rrs(s);
server_set_state(s, AVAHI_SERVER_COLLISION);
-
+
} else if (state == AVAHI_ENTRY_GROUP_ESTABLISHED &&
s->state == AVAHI_SERVER_REGISTERING)
avahi_server_decrease_host_rr_pending(s);
static void register_hinfo(AvahiServer *s) {
struct utsname utsname;
AvahiRecord *r;
-
+
assert(s);
-
+
if (!s->config.publish_hinfo)
return;
avahi_log_warn("Failed to create HINFO entry group: %s", avahi_strerror(s->error));
return;
}
-
+
/* Fill in HINFO rr */
if ((r = avahi_record_new_full(s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- uname(&utsname);
- r->data.hinfo.cpu = avahi_strdup(avahi_strup(utsname.machine));
- r->data.hinfo.os = avahi_strdup(avahi_strup(utsname.sysname));
- if (avahi_server_add(s, s->hinfo_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_ENTRY_UNIQUE, r) < 0) {
- avahi_log_warn("Failed to add HINFO RR: %s", avahi_strerror(s->error));
- return;
+ if (uname(&utsname) < 0)
+ avahi_log_warn("uname() failed: %s\n", avahi_strerror(errno));
+ else {
+
+ r->data.hinfo.cpu = avahi_strdup(avahi_strup(utsname.machine));
+ r->data.hinfo.os = avahi_strdup(avahi_strup(utsname.sysname));
+
+ avahi_log_info("Registering HINFO record with values '%s'/'%s'.", r->data.hinfo.cpu, r->data.hinfo.os);
+
+ if (avahi_server_add(s, s->hinfo_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_PUBLISH_UNIQUE, r) < 0) {
+ avahi_log_warn("Failed to add HINFO RR: %s", avahi_strerror(s->error));
+ return;
+ }
}
avahi_record_unref(r);
static void register_localhost(AvahiServer *s) {
AvahiAddress a;
assert(s);
-
+
/* Add localhost entries */
avahi_address_parse("127.0.0.1", AVAHI_PROTO_INET, &a);
- avahi_server_add_address(s, NULL, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "localhost", &a);
+ avahi_server_add_address(s, NULL, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_NO_ANNOUNCE, "localhost", &a);
avahi_address_parse("::1", AVAHI_PROTO_INET6, &a);
- avahi_server_add_address(s, NULL, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "ip6-localhost", &a);
+ avahi_server_add_address(s, NULL, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_PUBLISH_NO_PROBE|AVAHI_PUBLISH_NO_ANNOUNCE, "ip6-localhost", &a);
}
static void register_browse_domain(AvahiServer *s) {
if (!s->config.publish_domain)
return;
+ if (avahi_domain_equal(s->domain_name, "local"))
+ return;
+
if (s->browse_domain_entry_group)
assert(avahi_s_entry_group_is_empty(s->browse_domain_entry_group));
else
avahi_log_warn("Failed to create browse domain entry group: %s", avahi_strerror(s->error));
return;
}
-
+
if (avahi_server_add_ptr(s, s->browse_domain_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, 0, AVAHI_DEFAULT_TTL, "b._dns-sd._udp.local", s->domain_name) < 0) {
avahi_log_warn("Failed to add browse domain RR: %s", avahi_strerror(s->error));
return;
assert(s);
server_set_state(s, AVAHI_SERVER_REGISTERING);
- s->n_host_rr_pending ++; /** Make sure that the state isn't changed tp AVAHI_SERVER_RUNNING too early */
+ s->n_host_rr_pending ++; /** Make sure that the state isn't changed tp AVAHI_SERVER_RUNNING too early */
register_hinfo(s);
register_browse_domain(s);
- avahi_update_host_rrs(s->monitor, 0);
+ avahi_interface_monitor_update_rrs(s->monitor, 0);
+ assert(s->n_host_rr_pending > 0);
s->n_host_rr_pending --;
-
+
if (s->n_host_rr_pending == 0)
server_set_state(s, AVAHI_SERVER_RUNNING);
}
static void update_fqdn(AvahiServer *s) {
char *n;
-
+
assert(s);
assert(s->host_name);
assert(s->domain_name);
}
int avahi_server_set_host_name(AvahiServer *s, const char *host_name) {
+ char *hn = NULL;
assert(s);
- assert(host_name);
- if (host_name && !avahi_is_valid_host_name(host_name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+ AVAHI_CHECK_VALIDITY(s, !host_name || avahi_is_valid_host_name(host_name), AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (!host_name)
+ hn = avahi_get_host_name_strdup();
+ else
+ hn = avahi_normalize_name_strdup(host_name);
+
+ hn[strcspn(hn, ".")] = 0;
+
+ if (avahi_domain_equal(s->host_name, hn) && s->state != AVAHI_SERVER_COLLISION) {
+ avahi_free(hn);
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_CHANGE);
+ }
withdraw_host_rrs(s);
avahi_free(s->host_name);
- s->host_name = host_name ? avahi_normalize_name(host_name) : avahi_get_host_name();
- s->host_name[strcspn(s->host_name, ".")] = 0;
+ s->host_name = hn;
+
update_fqdn(s);
register_stuff(s);
}
int avahi_server_set_domain_name(AvahiServer *s, const char *domain_name) {
+ char *dn = NULL;
assert(s);
- assert(domain_name);
- if (domain_name && !avahi_is_valid_domain_name(domain_name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+ AVAHI_CHECK_VALIDITY(s, !domain_name || avahi_is_valid_domain_name(domain_name), AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (!domain_name)
+ dn = avahi_strdup("local");
+ else
+ dn = avahi_normalize_name_strdup(domain_name);
+
+ if (avahi_domain_equal(s->domain_name, domain_name)) {
+ avahi_free(dn);
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_CHANGE);
+ }
withdraw_host_rrs(s);
avahi_free(s->domain_name);
- s->domain_name = domain_name ? avahi_normalize_name(domain_name) : avahi_strdup("local");
+ s->domain_name = dn;
update_fqdn(s);
register_stuff(s);
+
+ avahi_free(dn);
return AVAHI_OK;
}
static int valid_server_config(const AvahiServerConfig *sc) {
+ AvahiStringList *l;
+
+ assert(sc);
+
+ if (sc->n_wide_area_servers > AVAHI_WIDE_AREA_SERVERS_MAX)
+ return AVAHI_ERR_INVALID_CONFIG;
if (sc->host_name && !avahi_is_valid_host_name(sc->host_name))
return AVAHI_ERR_INVALID_HOST_NAME;
-
+
if (sc->domain_name && !avahi_is_valid_domain_name(sc->domain_name))
return AVAHI_ERR_INVALID_DOMAIN_NAME;
+ for (l = sc->browse_domains; l; l = l->next)
+ if (!avahi_is_valid_domain_name((char*) l->text))
+ return AVAHI_ERR_INVALID_DOMAIN_NAME;
+
return AVAHI_OK;
}
static int setup_sockets(AvahiServer *s) {
assert(s);
-
- s->fd_ipv4 = s->config.use_ipv4 ? avahi_open_socket_ipv4() : -1;
- s->fd_ipv6 = s->config.use_ipv6 ? avahi_open_socket_ipv6() : -1;
-
+
+ s->fd_ipv4 = s->config.use_ipv4 ? avahi_open_socket_ipv4(s->config.disallow_other_stacks) : -1;
+ s->fd_ipv6 = s->config.use_ipv6 ? avahi_open_socket_ipv6(s->config.disallow_other_stacks) : -1;
+
if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0)
return AVAHI_ERR_NO_NETWORK;
else if (s->fd_ipv6 < 0 && s->config.use_ipv6)
avahi_log_notice("Failed to create IPv6 socket, proceeding in IPv4 only mode");
- s->fd_legacy_unicast_ipv4 = s->fd_ipv4 >= 0 && s->config.enable_reflector ? avahi_open_legacy_unicast_socket_ipv4() : -1;
- s->fd_legacy_unicast_ipv6 = s->fd_ipv6 >= 0 && s->config.enable_reflector ? avahi_open_legacy_unicast_socket_ipv6() : -1;
+ s->fd_legacy_unicast_ipv4 = s->fd_ipv4 >= 0 && s->config.enable_reflector ? avahi_open_unicast_socket_ipv4() : -1;
+ s->fd_legacy_unicast_ipv6 = s->fd_ipv6 >= 0 && s->config.enable_reflector ? avahi_open_unicast_socket_ipv6() : -1;
+
+ s->watch_ipv4 =
+ s->watch_ipv6 =
+ s->watch_legacy_unicast_ipv4 =
+ s->watch_legacy_unicast_ipv6 = NULL;
- s->watch_ipv4 = s->watch_ipv6 = s->watch_legacy_unicast_ipv4 = s->watch_legacy_unicast_ipv6 = NULL;
-
if (s->fd_ipv4 >= 0)
- s->watch_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_ipv4, AVAHI_WATCH_IN, socket_event, s);
+ s->watch_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_ipv4, AVAHI_WATCH_IN, mcast_socket_event, s);
if (s->fd_ipv6 >= 0)
- s->watch_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_ipv6, AVAHI_WATCH_IN, socket_event, s);
+ s->watch_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_ipv6, AVAHI_WATCH_IN, mcast_socket_event, s);
+
if (s->fd_legacy_unicast_ipv4 >= 0)
- s->watch_legacy_unicast_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv4, AVAHI_WATCH_IN, socket_event, s);
+ s->watch_legacy_unicast_ipv4 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv4, AVAHI_WATCH_IN, legacy_unicast_socket_event, s);
if (s->fd_legacy_unicast_ipv6 >= 0)
- s->watch_legacy_unicast_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv6, AVAHI_WATCH_IN, socket_event, s);
+ s->watch_legacy_unicast_ipv6 = s->poll_api->watch_new(s->poll_api, s->fd_legacy_unicast_ipv6, AVAHI_WATCH_IN, legacy_unicast_socket_event, s);
return 0;
}
AvahiServer *avahi_server_new(const AvahiPoll *poll_api, const AvahiServerConfig *sc, AvahiServerCallback callback, void* userdata, int *error) {
AvahiServer *s;
int e;
-
- if ((e = valid_server_config(sc)) < 0) {
+
+ if (sc && (e = valid_server_config(sc)) < 0) {
if (error)
*error = e;
return NULL;
}
-
+
if (!(s = avahi_new(AvahiServer, 1))) {
if (error)
*error = AVAHI_ERR_NO_MEMORY;
avahi_server_config_free(&s->config);
avahi_free(s);
-
+
return NULL;
}
s->need_entry_cleanup = 0;
s->need_group_cleanup = 0;
s->need_browser_cleanup = 0;
-
- s->time_event_queue = avahi_time_event_queue_new(poll_api);
-
+ s->cleanup_time_event = NULL;
+ s->hinfo_entry_group = NULL;
+ s->browse_domain_entry_group = NULL;
+ s->error = AVAHI_OK;
+ s->state = AVAHI_SERVER_INVALID;
+
s->callback = callback;
s->userdata = userdata;
-
+
+ s->time_event_queue = avahi_time_event_queue_new(poll_api);
+
s->entries_by_key = avahi_hashmap_new((AvahiHashFunc) avahi_key_hash, (AvahiEqualFunc) avahi_key_equal, NULL, NULL);
AVAHI_LLIST_HEAD_INIT(AvahiEntry, s->entries);
AVAHI_LLIST_HEAD_INIT(AvahiGroup, s->groups);
s->legacy_unicast_reflect_slots = NULL;
s->legacy_unicast_reflect_id = 0;
-
+
+ s->record_list = avahi_record_list_new();
+
/* Get host name */
- s->host_name = s->config.host_name ? avahi_normalize_name(s->config.host_name) : avahi_get_host_name();
+ s->host_name = s->config.host_name ? avahi_normalize_name_strdup(s->config.host_name) : avahi_get_host_name_strdup();
s->host_name[strcspn(s->host_name, ".")] = 0;
- s->domain_name = s->config.domain_name ? avahi_normalize_name(s->config.domain_name) : avahi_strdup("local");
+ s->domain_name = s->config.domain_name ? avahi_normalize_name_strdup(s->config.domain_name) : avahi_strdup("local");
s->host_name_fqdn = NULL;
update_fqdn(s);
- s->record_list = avahi_record_list_new();
+ do {
+ s->local_service_cookie = (uint32_t) rand() * (uint32_t) rand();
+ } while (s->local_service_cookie == AVAHI_SERVICE_COOKIE_INVALID);
- s->state = AVAHI_SERVER_INVALID;
+ if (s->config.enable_wide_area) {
+ s->wide_area_lookup_engine = avahi_wide_area_engine_new(s);
+ avahi_wide_area_set_servers(s->wide_area_lookup_engine, s->config.wide_area_servers, s->config.n_wide_area_servers);
+ } else
+ s->wide_area_lookup_engine = NULL;
+
+ s->multicast_lookup_engine = avahi_multicast_lookup_engine_new(s);
s->monitor = avahi_interface_monitor_new(s);
avahi_interface_monitor_sync(s->monitor);
register_localhost(s);
-
- s->hinfo_entry_group = NULL;
- s->browse_domain_entry_group = NULL;
register_stuff(s);
- s->error = AVAHI_OK;
-
return s;
}
void avahi_server_free(AvahiServer* s) {
assert(s);
- while(s->entries)
- free_entry(s, s->entries);
-
- avahi_interface_monitor_free(s->monitor);
-
- while (s->groups)
- free_group(s, s->groups);
-
- free_slots(s);
+ /* Remove all browsers */
while (s->dns_server_browsers)
avahi_s_dns_server_browser_free(s->dns_server_browsers);
avahi_s_service_resolver_free(s->service_resolvers);
while (s->record_browsers)
avahi_s_record_browser_destroy(s->record_browsers);
-
- avahi_hashmap_free(s->record_browser_hashmap);
+
+ /* Remove all locally rgeistered stuff */
+
+ while(s->entries)
+ avahi_entry_free(s, s->entries);
+
+ avahi_interface_monitor_free(s->monitor);
+
+ while (s->groups)
+ avahi_entry_group_free(s, s->groups);
+
+ free_slots(s);
+
avahi_hashmap_free(s->entries_by_key);
+ avahi_record_list_free(s->record_list);
+ avahi_hashmap_free(s->record_browser_hashmap);
+
+ if (s->wide_area_lookup_engine)
+ avahi_wide_area_engine_free(s->wide_area_lookup_engine);
+ avahi_multicast_lookup_engine_free(s->multicast_lookup_engine);
+
+ if (s->cleanup_time_event)
+ avahi_time_event_free(s->cleanup_time_event);
avahi_time_event_queue_free(s->time_event_queue);
- avahi_record_list_free(s->record_list);
+ /* Free watches */
if (s->watch_ipv4)
s->poll_api->watch_free(s->watch_ipv4);
if (s->watch_ipv6)
s->poll_api->watch_free(s->watch_ipv6);
+
if (s->watch_legacy_unicast_ipv4)
s->poll_api->watch_free(s->watch_legacy_unicast_ipv4);
if (s->watch_legacy_unicast_ipv6)
s->poll_api->watch_free(s->watch_legacy_unicast_ipv6);
-
+
+ /* Free sockets */
+
if (s->fd_ipv4 >= 0)
close(s->fd_ipv4);
if (s->fd_ipv6 >= 0)
close(s->fd_ipv6);
+
if (s->fd_legacy_unicast_ipv4 >= 0)
close(s->fd_legacy_unicast_ipv4);
if (s->fd_legacy_unicast_ipv6 >= 0)
close(s->fd_legacy_unicast_ipv6);
+ /* Free other stuff */
+
avahi_free(s->host_name);
avahi_free(s->domain_name);
avahi_free(s->host_name_fqdn);
avahi_free(s);
}
-static int check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiEntryFlags flags) {
- AvahiEntry *e;
-
- assert(s);
- assert(r);
-
- for (e = avahi_hashmap_lookup(s->entries_by_key, r->key); e; e = e->by_key_next) {
- if (e->dead)
- continue;
-
- if (!(flags & AVAHI_ENTRY_UNIQUE) && !(e->flags & AVAHI_ENTRY_UNIQUE))
- continue;
-
- if ((flags & AVAHI_ENTRY_ALLOWMUTIPLE) && (e->flags & AVAHI_ENTRY_ALLOWMUTIPLE) )
- continue;
-
- if ((interface <= 0 ||
- e->interface <= 0 ||
- e->interface == interface) &&
- (protocol == AVAHI_PROTO_UNSPEC ||
- e->protocol == AVAHI_PROTO_UNSPEC ||
- e->protocol == protocol))
-
- return -1;
- }
-
- return 0;
-}
-
-int avahi_server_add(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- AvahiRecord *r) {
-
- AvahiEntry *e, *t;
-
- assert(s);
- assert(r);
-
- if (r->ttl == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_TTL);
-
- if (avahi_key_is_pattern(r->key))
- return avahi_server_set_errno(s, AVAHI_ERR_IS_PATTERN);
-
- if (!avahi_record_is_valid(r))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_RECORD);
-
- if (check_record_conflict(s, interface, protocol, r, flags) < 0)
- return avahi_server_set_errno(s, AVAHI_ERR_LOCAL_COLLISION);
-
- if (!(e = avahi_new(AvahiEntry, 1)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_NETWORK);
-
- e->server = s;
- e->record = avahi_record_ref(r);
- e->group = g;
- e->interface = interface;
- e->protocol = protocol;
- e->flags = flags;
- e->dead = 0;
-
- AVAHI_LLIST_HEAD_INIT(AvahiAnnouncement, e->announcements);
-
- AVAHI_LLIST_PREPEND(AvahiEntry, entries, s->entries, e);
-
- /* Insert into hash table indexed by name */
- t = avahi_hashmap_lookup(s->entries_by_key, e->record->key);
- AVAHI_LLIST_PREPEND(AvahiEntry, by_key, t, e);
- avahi_hashmap_replace(s->entries_by_key, e->record->key, t);
-
- /* Insert into group list */
- if (g)
- AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
-
- avahi_announce_entry(s, e);
-
- return 0;
-}
-
-const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiSEntryGroup *g, void **state) {
- AvahiEntry **e = (AvahiEntry**) state;
+const char* avahi_server_get_domain_name(AvahiServer *s) {
assert(s);
- assert(e);
-
- if (!*e)
- *e = g ? g->entries : s->entries;
-
- while (*e && (*e)->dead)
- *e = g ? (*e)->by_group_next : (*e)->entries_next;
-
- if (!*e)
- return NULL;
- return avahi_record_ref((*e)->record);
+ return s->domain_name;
}
-int avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, void* userdata) {
- AvahiEntry *e;
-
+const char* avahi_server_get_host_name(AvahiServer *s) {
assert(s);
- assert(callback);
- callback(";;; ZONE DUMP FOLLOWS ;;;", userdata);
-
- for (e = s->entries; e; e = e->entries_next) {
- char *t;
- char ln[256];
-
- if (e->dead)
- continue;
-
- if (!(t = avahi_record_to_string(e->record)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- snprintf(ln, sizeof(ln), "%s ; iface=%i proto=%i", t, e->interface, e->protocol);
- avahi_free(t);
-
- callback(ln, userdata);
- }
-
- avahi_dump_caches(s->monitor, callback, userdata);
- return AVAHI_OK;
+ return s->host_name;
}
-int avahi_server_add_ptr(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- uint32_t ttl,
- const char *name,
- const char *dest) {
-
- AvahiRecord *r;
- int ret;
-
+const char* avahi_server_get_host_name_fqdn(AvahiServer *s) {
assert(s);
- assert(dest);
- if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- r->data.ptr.name = avahi_normalize_name(dest);
- ret = avahi_server_add(s, g, interface, protocol, flags, r);
- avahi_record_unref(r);
- return ret;
+ return s->host_name_fqdn;
}
-int avahi_server_add_address(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- const char *name,
- AvahiAddress *a) {
-
- char *n = NULL;
- int ret = AVAHI_OK;
+void* avahi_server_get_data(AvahiServer *s) {
assert(s);
- assert(a);
-
- if (name) {
- if (!(n = avahi_normalize_name(name)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- name = n;
- } else
- name = s->host_name_fqdn;
-
- if (!avahi_is_valid_domain_name(name)) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
- goto fail;
- }
-
- if (a->family == AVAHI_PROTO_INET) {
- char *reverse;
- AvahiRecord *r;
- if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- r->data.a.address = a->data.ipv4;
- ret = avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
-
- } else {
- char *reverse;
- AvahiRecord *r;
-
- assert(a->family == AVAHI_PROTO_INET6);
-
- if (!(r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- r->data.aaaa.address = a->data.ipv6;
- ret = avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
-
- if (ret < 0)
- goto fail;
-
- if (!(reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
- }
-
- ret = avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
- avahi_free(reverse);
- }
-
-fail:
-
- avahi_free(n);
-
- return ret;
+ return s->userdata;
}
-static int server_add_txt_strlst_nocopy(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- uint32_t ttl,
- const char *name,
- AvahiStringList *strlst) {
-
- AvahiRecord *r;
- int ret;
-
+void avahi_server_set_data(AvahiServer *s, void* userdata) {
assert(s);
-
- if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl)))
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- r->data.txt.string_list = strlst;
- ret = avahi_server_add(s, g, interface, protocol, flags, r);
- avahi_record_unref(r);
- return ret;
+ s->userdata = userdata;
}
-int avahi_server_add_txt_strlst(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- uint32_t ttl,
- const char *name,
- AvahiStringList *strlst) {
-
+AvahiServerState avahi_server_get_state(AvahiServer *s) {
assert(s);
- return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst));
+ return s->state;
}
-int avahi_server_add_txt_va(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- uint32_t ttl,
- const char *name,
- va_list va) {
+AvahiServerConfig* avahi_server_config_init(AvahiServerConfig *c) {
+ assert(c);
- assert(s);
+ memset(c, 0, sizeof(AvahiServerConfig));
+ c->use_ipv6 = 1;
+ c->use_ipv4 = 1;
+ c->allow_interfaces = NULL;
+ c->deny_interfaces = NULL;
+ c->host_name = NULL;
+ c->domain_name = NULL;
+ c->check_response_ttl = 0;
+ c->publish_hinfo = 0;
+ c->publish_addresses = 1;
+ c->publish_no_reverse = 0;
+ c->publish_workstation = 0;
+ c->publish_domain = 1;
+ c->use_iff_running = 0;
+ c->enable_reflector = 0;
+ c->reflect_ipv = 0;
+ c->add_service_cookie = 0;
+ c->enable_wide_area = 0;
+ c->n_wide_area_servers = 0;
+ c->disallow_other_stacks = 0;
+ c->browse_domains = NULL;
+ c->disable_publishing = 0;
+ c->allow_point_to_point = 0;
+ c->publish_aaaa_on_ipv4 = 1;
+ c->publish_a_on_ipv6 = 0;
+ c->n_cache_entries_max = AVAHI_DEFAULT_CACHE_ENTRIES_MAX;
+ c->ratelimit_interval = 0;
+ c->ratelimit_burst = 0;
- return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va));
+ return c;
}
-int avahi_server_add_txt(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiEntryFlags flags,
- uint32_t ttl,
- const char *name,
- ...) {
-
- va_list va;
- int ret;
-
- assert(s);
-
- va_start(va, name);
- ret = avahi_server_add_txt_va(s, g, interface, protocol, flags, ttl, name, va);
- va_end(va);
+void avahi_server_config_free(AvahiServerConfig *c) {
+ assert(c);
- return ret;
+ avahi_free(c->host_name);
+ avahi_free(c->domain_name);
+ avahi_string_list_free(c->browse_domains);
+ avahi_string_list_free(c->allow_interfaces);
+ avahi_string_list_free(c->deny_interfaces);
}
-static void escape_service_name(char *d, size_t size, const char *s) {
- assert(d);
- assert(size);
- assert(s);
+AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiServerConfig *c) {
+ char *d = NULL, *h = NULL;
+ AvahiStringList *browse = NULL, *allow = NULL, *deny = NULL;
+ assert(ret);
+ assert(c);
- while (*s && size >= 2) {
- if (*s == '.' || *s == '\\') {
- if (size < 3)
- break;
+ if (c->host_name)
+ if (!(h = avahi_strdup(c->host_name)))
+ return NULL;
- *(d++) = '\\';
- size--;
+ if (c->domain_name)
+ if (!(d = avahi_strdup(c->domain_name))) {
+ avahi_free(h);
+ return NULL;
}
-
- *(d++) = *(s++);
- size--;
- }
-
- assert(size > 0);
- *(d++) = 0;
-}
-
-static int server_add_service_strlst_nocopy(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- AvahiStringList *strlst) {
-
- char ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
- char *t = NULL, *d = NULL, *h = NULL;
- AvahiRecord *r = NULL;
- int ret = AVAHI_OK;
-
- assert(s);
- assert(type);
- assert(name);
-
- if (!avahi_is_valid_service_name(name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_NAME);
-
- if (!avahi_is_valid_service_type(type))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_TYPE);
-
- if (domain && !avahi_is_valid_domain_name(domain))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
-
- if (host && !avahi_is_valid_domain_name(host))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- escape_service_name(ename, sizeof(ename), name);
- if (!domain)
- domain = s->domain_name;
-
- if (!host)
- host = s->host_name_fqdn;
-
- if (!(d = avahi_normalize_name(domain)) ||
- !(t = avahi_normalize_name(type)) ||
- !(h = avahi_normalize_name(host))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
+ if (!(browse = avahi_string_list_copy(c->browse_domains)) && c->browse_domains) {
+ avahi_free(h);
+ avahi_free(d);
+ return NULL;
}
- snprintf(ptr_name, sizeof(ptr_name), "%s.%s", t, d);
- snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, t, d);
-
- if ((ret = avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
- goto fail;
-
- if (!(r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- goto fail;
+ if (!(allow = avahi_string_list_copy(c->allow_interfaces)) && c->allow_interfaces) {
+ avahi_string_list_free(browse);
+ avahi_free(h);
+ avahi_free(d);
+ return NULL;
}
-
- r->data.srv.priority = 0;
- r->data.srv.weight = 0;
- r->data.srv.port = port;
- r->data.srv.name = h;
- h = NULL;
- ret = avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- goto fail;
-
- ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
- strlst = NULL;
-
- if (ret < 0)
- goto fail;
- snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", d);
- ret = avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, AVAHI_DEFAULT_TTL, enum_ptr, ptr_name);
+ if (!(deny = avahi_string_list_copy(c->deny_interfaces)) && c->deny_interfaces) {
+ avahi_string_list_free(allow);
+ avahi_string_list_free(browse);
+ avahi_free(h);
+ avahi_free(d);
+ return NULL;
+ }
-fail:
-
- avahi_free(d);
- avahi_free(t);
- avahi_free(h);
+ *ret = *c;
+ ret->host_name = h;
+ ret->domain_name = d;
+ ret->browse_domains = browse;
+ ret->allow_interfaces = allow;
+ ret->deny_interfaces = deny;
- avahi_string_list_free(strlst);
-
return ret;
}
-int avahi_server_add_service_strlst(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- AvahiStringList *strlst) {
-
+int avahi_server_errno(AvahiServer *s) {
assert(s);
- assert(type);
- assert(name);
-
- return server_add_service_strlst_nocopy(s, g, interface, protocol, name, type, domain, host, port, avahi_string_list_copy(strlst));
-}
-
-int avahi_server_add_service_va(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- va_list va){
- assert(s);
- assert(type);
- assert(name);
-
- return server_add_service_strlst_nocopy(s, g, interface, protocol, name, type, domain, host, port, avahi_string_list_new_va(va));
+ return s->error;
}
-int avahi_server_add_service(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *name,
- const char *type,
- const char *domain,
- const char *host,
- uint16_t port,
- ... ){
-
- va_list va;
- int ret;
-
+/* Just for internal use */
+int avahi_server_set_errno(AvahiServer *s, int error) {
assert(s);
- assert(type);
- assert(name);
-
- va_start(va, port);
- ret = avahi_server_add_service_va(s, g, interface, protocol, name, type, domain, host, port, va);
- va_end(va);
- return ret;
-}
-static void hexstring(char *s, size_t sl, const void *p, size_t pl) {
- static const char hex[] = "0123456789abcdef";
- int b = 0;
- const uint8_t *k = p;
-
- while (sl > 1 && pl > 0) {
- *(s++) = hex[(b ? *k : *k >> 4) & 0xF];
-
- if (b) {
- k++;
- pl--;
- }
-
- b = !b;
-
- sl--;
- }
-
- if (sl > 0)
- *s = 0;
+ return s->error = error;
}
-int avahi_server_add_dns_server_address(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *domain,
- AvahiDNSServerType type,
- const AvahiAddress *address,
- uint16_t port /** should be 53 */) {
-
- AvahiRecord *r;
- int ret;
- char n[64] = "ip-";
-
- assert(s);
- assert(address);
- assert(type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE);
- assert(address->family == AVAHI_PROTO_INET || address->family == AVAHI_PROTO_INET6);
-
- if (port == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
-
- if (domain && !avahi_is_valid_domain_name(domain))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
-
- if (address->family == AVAHI_PROTO_INET) {
- hexstring(n+3, sizeof(n)-3, &address->data, 4);
- r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME);
- r->data.a.address = address->data.ipv4;
- } else {
- hexstring(n+3, sizeof(n)-3, &address->data, 6);
- r = avahi_record_new_full(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME);
- r->data.aaaa.address = address->data.ipv6;
- }
-
- if (!r)
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
- ret = avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
- avahi_record_unref(r);
-
- if (ret < 0)
- return ret;
-
- return avahi_server_add_dns_server_name(s, g, interface, protocol, domain, type, n, port);
-}
-
-int avahi_server_add_dns_server_name(
- AvahiServer *s,
- AvahiSEntryGroup *g,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- const char *domain,
- AvahiDNSServerType type,
- const char *name,
- uint16_t port /** should be 53 */) {
-
- int ret = -1;
- char t[256], *d = NULL, *n = NULL;
- AvahiRecord *r;
-
+uint32_t avahi_server_get_local_service_cookie(AvahiServer *s) {
assert(s);
- assert(name);
- assert(type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE);
-
- if (port == 0)
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
-
- if (!avahi_is_valid_domain_name(name))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
-
- if (domain && !avahi_is_valid_domain_name(domain))
- return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
-
-
- if (!domain)
- domain = s->domain_name;
-
- if (!(n = avahi_normalize_name(name)) ||
- !(d = avahi_normalize_name(domain))) {
- avahi_free(n);
- avahi_free(d);
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- }
-
- snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", d);
- avahi_free(d);
-
- if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
- avahi_free(n);
- return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- }
-
- r->data.srv.priority = 0;
- r->data.srv.weight = 0;
- r->data.srv.port = port;
- r->data.srv.name = n;
- ret = avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_NULL, r);
- avahi_record_unref(r);
- return ret;
+ return s->local_service_cookie;
}
-static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, void* userdata) {
- AvahiKey *k = userdata;
-
- assert(m);
- assert(i);
- assert(k);
-
- avahi_interface_post_query(i, k, 0);
-}
+static AvahiEntry *find_entry(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) {
+ AvahiEntry *e;
-void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) {
assert(s);
assert(key);
- avahi_interface_monitor_walk(s->monitor, interface, protocol, post_query_callback, key);
-}
-
-void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state) {
- assert(g);
+ for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next)
- if (g->state == state)
- return;
+ if ((e->interface == interface || e->interface <= 0 || interface <= 0) &&
+ (e->protocol == protocol || e->protocol == AVAHI_PROTO_UNSPEC || protocol == AVAHI_PROTO_UNSPEC) &&
+ (!e->group || e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED || e->group->state == AVAHI_ENTRY_GROUP_REGISTERING))
- assert(state <= AVAHI_ENTRY_GROUP_COLLISION);
+ return e;
- g->state = state;
-
- if (g->callback)
- g->callback(g->server, g, state, g->userdata);
+ return NULL;
}
-AvahiSEntryGroup *avahi_s_entry_group_new(AvahiServer *s, AvahiSEntryGroupCallback callback, void* userdata) {
- AvahiSEntryGroup *g;
-
- assert(s);
-
- if (!(g = avahi_new(AvahiSEntryGroup, 1))) {
- avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- return NULL;
- }
-
- g->server = s;
- g->callback = callback;
- g->userdata = userdata;
- g->dead = 0;
- g->state = AVAHI_ENTRY_GROUP_UNCOMMITED;
- g->n_probing = 0;
- g->n_register_try = 0;
- g->register_time_event = NULL;
- g->register_time.tv_sec = 0;
- g->register_time.tv_usec = 0;
- AVAHI_LLIST_HEAD_INIT(AvahiEntry, g->entries);
-
- AVAHI_LLIST_PREPEND(AvahiSEntryGroup, groups, s->groups, g);
- return g;
-}
-
-void avahi_s_entry_group_free(AvahiSEntryGroup *g) {
+int avahi_server_get_group_of_service(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char *domain, AvahiSEntryGroup** ret_group) {
+ AvahiKey *key = NULL;
AvahiEntry *e;
-
- assert(g);
- assert(g->server);
-
- for (e = g->entries; e; e = e->by_group_next) {
- if (!e->dead) {
- avahi_goodbye_entry(g->server, e, 1);
- e->dead = 1;
- }
- }
-
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
- g->dead = 1;
-
- g->server->need_group_cleanup = 1;
- g->server->need_entry_cleanup = 1;
-}
-
-static void entry_group_commit_real(AvahiSEntryGroup *g) {
- assert(g);
-
- gettimeofday(&g->register_time, NULL);
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
-
- if (!g->dead) {
- avahi_announce_group(g->server, g);
- avahi_s_entry_group_check_probed(g, 0);
- }
-}
-
-static void entry_group_register_time_event_callback(AvahiTimeEvent *e, void* userdata) {
- AvahiSEntryGroup *g = userdata;
- assert(g);
-
-/* avahi_log_debug("Holdoff passed, waking up and going on."); */
-
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
-
- /* Holdoff time passed, so let's start probing */
- entry_group_commit_real(g);
-}
-
-int avahi_s_entry_group_commit(AvahiSEntryGroup *g) {
- struct timeval now;
-
- assert(g);
- assert(!g->dead);
-
- if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION)
- return avahi_server_set_errno(g->server, AVAHI_ERR_BAD_STATE);
+ int ret;
+ char n[AVAHI_DOMAIN_NAME_MAX];
- g->n_register_try++;
+ assert(s);
+ assert(name);
+ assert(type);
+ assert(ret_group);
- avahi_timeval_add(&g->register_time,
- 1000*(g->n_register_try >= AVAHI_RR_RATE_LIMIT_COUNT ?
- AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT :
- AVAHI_RR_HOLDOFF_MSEC));
+ AVAHI_CHECK_VALIDITY(s, AVAHI_IF_VALID(interface), AVAHI_ERR_INVALID_INTERFACE);
+ AVAHI_CHECK_VALIDITY(s, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
+ AVAHI_CHECK_VALIDITY(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
+ AVAHI_CHECK_VALIDITY(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
+ AVAHI_CHECK_VALIDITY(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
- gettimeofday(&now, NULL);
+ if ((ret = avahi_service_name_join(n, sizeof(n), name, type, domain) < 0))
+ return avahi_server_set_errno(s, ret);
- if (avahi_timeval_compare(&g->register_time, &now) <= 0) {
- /* Holdoff time passed, so let's start probing */
-/* avahi_log_debug("Holdoff passed, directly going on."); */
+ if (!(key = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV)))
+ return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
- entry_group_commit_real(g);
- } else {
-/* avahi_log_debug("Holdoff not passed, sleeping."); */
+ e = find_entry(s, interface, protocol, key);
+ avahi_key_unref(key);
- /* Holdoff time has not yet passed, so let's wait */
- assert(!g->register_time_event);
- g->register_time_event = avahi_time_event_new(g->server->time_event_queue, &g->register_time, entry_group_register_time_event_callback, g);
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
+ if (e) {
+ *ret_group = e->group;
+ return AVAHI_OK;
}
- return AVAHI_OK;
+ return avahi_server_set_errno(s, AVAHI_ERR_NOT_FOUND);
}
-void avahi_s_entry_group_reset(AvahiSEntryGroup *g) {
+int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name) {
+ AvahiKey *key = NULL;
AvahiEntry *e;
- assert(g);
-
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
- for (e = g->entries; e; e = e->by_group_next) {
- if (!e->dead) {
- avahi_goodbye_entry(g->server, e, 1);
- e->dead = 1;
- }
- }
-
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
- g->server->need_entry_cleanup = 1;
- g->n_probing = 0;
-
- avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED);
-}
-
-int avahi_entry_is_commited(AvahiEntry *e) {
- assert(e);
- assert(!e->dead);
-
- return !e->group ||
- e->group->state == AVAHI_ENTRY_GROUP_REGISTERING ||
- e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED;
-}
-AvahiEntryGroupState avahi_s_entry_group_get_state(AvahiSEntryGroup *g) {
- assert(g);
- assert(!g->dead);
+ assert(s);
+ assert(name);
- return g->state;
-}
+ if (!s->host_name_fqdn)
+ return 0;
-void avahi_s_entry_group_set_data(AvahiSEntryGroup *g, void* userdata) {
- assert(g);
+ if (!(key = avahi_key_new(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV)))
+ return 0;
- g->userdata = userdata;
-}
+ e = find_entry(s, interface, protocol, key);
+ avahi_key_unref(key);
-void* avahi_s_entry_group_get_data(AvahiSEntryGroup *g) {
- assert(g);
+ if (!e)
+ return 0;
- return g->userdata;
+ return avahi_domain_equal(s->host_name_fqdn, e->record->data.srv.name);
}
-int avahi_s_entry_group_is_empty(AvahiSEntryGroup *g) {
+int avahi_server_is_record_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *record) {
AvahiEntry *e;
- assert(g);
- /* Look for an entry that is not dead */
- for (e = g->entries; e; e = e->by_group_next)
- if (!e->dead)
- return 0;
-
- return 1;
-}
-
-const char* avahi_server_get_domain_name(AvahiServer *s) {
assert(s);
+ assert(record);
- return s->domain_name;
-}
+ for (e = avahi_hashmap_lookup(s->entries_by_key, record->key); e; e = e->by_key_next)
-const char* avahi_server_get_host_name(AvahiServer *s) {
- assert(s);
+ if ((e->interface == interface || e->interface <= 0 || interface <= 0) &&
+ (e->protocol == protocol || e->protocol == AVAHI_PROTO_UNSPEC || protocol == AVAHI_PROTO_UNSPEC) &&
+ (!e->group || e->group->state == AVAHI_ENTRY_GROUP_ESTABLISHED || e->group->state == AVAHI_ENTRY_GROUP_REGISTERING) &&
+ avahi_record_equal_no_ttl(record, e->record))
+ return 1;
- return s->host_name;
+ return 0;
}
-const char* avahi_server_get_host_name_fqdn(AvahiServer *s) {
+/** Set the wide area DNS servers */
+int avahi_server_set_wide_area_servers(AvahiServer *s, const AvahiAddress *a, unsigned n) {
assert(s);
- return s->host_name_fqdn;
-}
+ if (!s->wide_area_lookup_engine)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_CONFIG);
-void* avahi_server_get_data(AvahiServer *s) {
- assert(s);
-
- return s->userdata;
+ avahi_wide_area_set_servers(s->wide_area_lookup_engine, a, n);
+ return AVAHI_OK;
}
-void avahi_server_set_data(AvahiServer *s, void* userdata) {
+const AvahiServerConfig* avahi_server_get_config(AvahiServer *s) {
assert(s);
- s->userdata = userdata;
+ return &s->config;
}
-AvahiServerState avahi_server_get_state(AvahiServer *s) {
- assert(s);
-
- return s->state;
-}
+/** Set the browsing domains */
+int avahi_server_set_browse_domains(AvahiServer *s, AvahiStringList *domains) {
+ AvahiStringList *l;
-AvahiServerConfig* avahi_server_config_init(AvahiServerConfig *c) {
- assert(c);
-
- memset(c, 0, sizeof(AvahiServerConfig));
- c->use_ipv6 = 1;
- c->use_ipv4 = 1;
- c->host_name = NULL;
- c->domain_name = NULL;
- c->check_response_ttl = 0;
- c->publish_hinfo = 1;
- c->publish_addresses = 1;
- c->publish_workstation = 1;
- c->publish_domain = 1;
- c->use_iff_running = 0;
- c->enable_reflector = 0;
- c->reflect_ipv = 0;
-
- return c;
-}
-
-void avahi_server_config_free(AvahiServerConfig *c) {
- assert(c);
-
- avahi_free(c->host_name);
- avahi_free(c->domain_name);
-}
-
-AvahiServerConfig* avahi_server_config_copy(AvahiServerConfig *ret, const AvahiServerConfig *c) {
- char *d = NULL, *h = NULL;
- assert(ret);
- assert(c);
-
- if (c->host_name)
- if (!(h = avahi_strdup(c->host_name)))
- return NULL;
-
- if (c->domain_name)
- if (!(d = avahi_strdup(c->domain_name))) {
- avahi_free(h);
- return NULL;
- }
-
- *ret = *c;
- ret->host_name = h;
- ret->domain_name = d;
-
- return ret;
-}
-
-int avahi_server_errno(AvahiServer *s) {
assert(s);
-
- return s->error;
-}
-/* Just for internal use */
-int avahi_server_set_errno(AvahiServer *s, int error) {
- assert(s);
+ for (l = s->config.browse_domains; l; l = l->next)
+ if (!avahi_is_valid_domain_name((char*) l->text))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
- return s->error = error;
-}
+ avahi_string_list_free(s->config.browse_domains);
+ s->config.browse_domains = avahi_string_list_copy(domains);
+ return AVAHI_OK;
+}
projects / catta / blobdiff