-/* $Id$ */
-
/***
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
if (g->register_time_event)
avahi_time_event_free(g->register_time_event);
-
+
AVAHI_LLIST_REMOVE(AvahiSEntryGroup, groups, s->groups, g);
avahi_free(g);
}
if (s->need_group_cleanup) {
AvahiSEntryGroup *g, *next;
-
+
for (g = s->groups; g; g = next) {
next = g->groups_next;
-
+
if (g->dead)
avahi_entry_group_free(s, g);
}
if (s->need_entry_cleanup) {
AvahiEntry *e, *next;
-
+
for (e = s->entries; e; e = next) {
next = e->entries_next;
-
+
if (e->dead)
avahi_entry_free(s, e);
}
if (s->need_browser_cleanup)
avahi_browser_cleanup(s);
+
+ if (s->cleanup_time_event) {
+ avahi_time_event_free(s->cleanup_time_event);
+ s->cleanup_time_event = NULL;
+ }
}
static int check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiPublishFlags flags) {
AvahiEntry *e;
-
+
assert(s);
assert(r);
if (!(flags & AVAHI_PUBLISH_UNIQUE) && !(e->flags & AVAHI_PUBLISH_UNIQUE))
continue;
-
+
if ((flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) && (e->flags & AVAHI_PUBLISH_ALLOW_MULTIPLE) )
continue;
+ if (avahi_record_equal_no_ttl(r, e->record)) {
+ /* The records are the same, not a conflict in any case */
+ continue;
+ }
+
if ((interface <= 0 ||
e->interface <= 0 ||
e->interface == interface) &&
AvahiRecord *r) {
AvahiEntry *e;
-
+
assert(s);
assert(r);
transport_flags_from_domain(s, &flags, r->key->name);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !s->config.disable_publishing, AVAHI_ERR_NOT_PERMITTED);
- AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !g || (g->state != AVAHI_ENTRY_GROUP_ESTABLISHED && g->state != AVAHI_ENTRY_GROUP_REGISTERING), AVAHI_ERR_BAD_STATE);
-
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(s,
+ !g ||
+ (g->state != AVAHI_ENTRY_GROUP_ESTABLISHED && g->state != AVAHI_ENTRY_GROUP_REGISTERING) ||
+ (flags & AVAHI_PUBLISH_UPDATE), AVAHI_ERR_BAD_STATE);
+
if (flags & AVAHI_PUBLISH_UPDATE) {
AvahiRecord *old_record;
int is_first = 1;
-
+
/* Update and existing record */
/* Find the first matching entry */
/* If we were the first entry in the list, we need to update the key */
if (is_first)
avahi_hashmap_replace(s->entries_by_key, e->record->key, e);
-
+
avahi_record_unref(old_record);
} else {
AvahiEntry *t;
/* Add a new record */
-
+
if (check_record_conflict(s, interface, protocol, r, flags) < 0) {
avahi_server_set_errno(s, AVAHI_ERR_COLLISION);
return NULL;
avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
return NULL;
}
-
+
e->server = s;
e->record = avahi_record_ref(r);
e->group = g;
e->protocol = protocol;
e->flags = flags;
e->dead = 0;
-
+
AVAHI_LLIST_HEAD_INIT(AvahiAnnouncer, e->announcers);
-
+
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_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
+
avahi_announce_entry(s, 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;
int avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, void* userdata) {
AvahiEntry *e;
-
+
assert(s);
assert(callback);
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);
AvahiRecord *r;
AvahiEntry *e;
-
+
assert(s);
assert(dest);
avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
return NULL;
}
-
+
r->data.ptr.name = avahi_normalize_name_strdup(dest);
e = server_add_internal(s, g, interface, protocol, flags, r);
avahi_record_unref(r);
return e;
}
-
+
int avahi_server_add_ptr(
AvahiServer *s,
AvahiSEntryGroup *g,
int ret = AVAHI_OK;
AvahiEntry *entry = NULL, *reverse = NULL;
AvahiRecord *r;
-
+
assert(s);
assert(a);
AVAHI_PUBLISH_UPDATE|
AVAHI_PUBLISH_USE_WIDE_AREA|
AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
- AVAHI_CHECK_VALIDITY(s, !name || avahi_is_valid_domain_name(name), AVAHI_ERR_INVALID_HOST_NAME);
+ AVAHI_CHECK_VALIDITY(s, !name || avahi_is_valid_fqdn(name), AVAHI_ERR_INVALID_HOST_NAME);
/* Prepare the host naem */
-
+
if (!name)
name = s->host_name_fqdn;
else {
transport_flags_from_domain(s, &flags, name);
AVAHI_CHECK_VALIDITY(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
-
+
/* Create the A/AAAA record */
-
+
if (a->proto == AVAHI_PROTO_INET) {
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 finish;
}
-
+
r->data.a.address = a->data.ipv4;
-
+
} else {
assert(a->proto == 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 finish;
}
-
+
r->data.aaaa.address = a->data.ipv6;
}
-
+
entry = server_add_internal(s, g, interface, protocol, (flags & ~ AVAHI_PUBLISH_NO_REVERSE) | AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
avahi_record_unref(r);
}
/* Create the reverse lookup entry */
-
+
if (!(flags & AVAHI_PUBLISH_NO_REVERSE)) {
char reverse_n[AVAHI_DOMAIN_NAME_MAX];
avahi_reverse_lookup_name(a, reverse_n, sizeof(reverse_n));
-
+
if (!(reverse = server_add_ptr_internal(s, g, interface, protocol, flags | AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse_n, name))) {
ret = avahi_server_errno(s);
goto finish;
}
}
-
+
finish:
if (ret != AVAHI_OK && !(flags & AVAHI_PUBLISH_UPDATE)) {
AvahiRecord *r;
AvahiEntry *e;
-
+
assert(s);
if (!(r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl))) {
avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
return NULL;
}
-
+
r->data.txt.string_list = strlst;
e = server_add_internal(s, g, interface, protocol, flags, r);
avahi_record_unref(r);
AvahiRecord *r = NULL;
int ret = AVAHI_OK;
AvahiEntry *srv_entry = NULL, *txt_entry = NULL, *ptr_entry = NULL, *enum_entry = NULL;
-
+
assert(s);
assert(type);
assert(name);
AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_name(name), AVAHI_ERR_INVALID_SERVICE_NAME);
AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, avahi_is_valid_service_type_strict(type), AVAHI_ERR_INVALID_SERVICE_TYPE);
AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
- AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_domain_name(host), AVAHI_ERR_INVALID_HOST_NAME);
+ AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, !host || avahi_is_valid_fqdn(host), AVAHI_ERR_INVALID_HOST_NAME);
if (!domain)
domain = s->domain_name;
transport_flags_from_domain(s, &flags, domain);
AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
-
+
if (!(h = avahi_normalize_name_strdup(host))) {
ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
goto fail;
}
/* Add service enumeration PTR record */
-
+
if (!(ptr_entry = server_add_ptr_internal(s, g, interface, protocol, 0, AVAHI_DEFAULT_TTL, ptr_name, svc_name))) {
ret = avahi_server_errno(s);
goto fail;
}
/* Add SRV record */
-
+
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;
}
-
+
r->data.srv.priority = 0;
r->data.srv.weight = 0;
r->data.srv.port = port;
if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
strlst = add_magic_cookie(s, strlst);
-
+
txt_entry = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
strlst = NULL;
}
/* Add service type enumeration record */
-
+
if (!(enum_entry = server_add_ptr_internal(s, g, interface, protocol, 0, AVAHI_DEFAULT_TTL, enum_ptr, ptr_name))) {
ret = avahi_server_errno(s);
goto fail;
if (enum_entry)
avahi_entry_free(s, enum_entry);
}
-
+
avahi_string_list_free(strlst);
avahi_free(h);
-
+
return ret;
}
va_list va;
int ret;
-
+
va_start(va, port);
ret = server_add_service_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, host, port, avahi_string_list_new_va(va));
va_end(va);
-
+
return ret;
}
AvahiIfIndex interface,
AvahiProtocol protocol,
AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
+ const char *name,
+ const char *type,
+ const char *domain,
AvahiStringList *strlst) {
char svc_name[AVAHI_DOMAIN_NAME_MAX];
int ret = AVAHI_OK;
AvahiEntry *e;
-
+
assert(s);
assert(type);
assert(name);
/* Add TXT record */
if (!(flags & AVAHI_PUBLISH_NO_COOKIE))
strlst = add_magic_cookie(s, strlst);
-
+
e = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_UPDATE, AVAHI_DEFAULT_TTL, svc_name, strlst);
strlst = NULL;
if (!e)
ret = avahi_server_errno(s);
-
+
fail:
-
+
avahi_string_list_free(strlst);
-
+
return ret;
}
AvahiIfIndex interface,
AvahiProtocol protocol,
AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
+ const char *name,
+ const char *type,
+ const char *domain,
AvahiStringList *strlst) {
return server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_copy(strlst));
AvahiIfIndex interface,
AvahiProtocol protocol,
AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
+ const char *name,
+ const char *type,
+ const char *domain,
...) {
va_list va;
int ret;
-
+
va_start(va, domain);
ret = server_update_service_txt_strlst_nocopy(s, g, interface, protocol, flags, name, type, domain, avahi_string_list_new_va(va));
va_end(va);
-
+
return ret;
}
AvahiIfIndex interface,
AvahiProtocol protocol,
AvahiPublishFlags flags,
- const char *name,
- const char *type,
- const char *domain,
+ const char *name,
+ const char *type,
+ const char *domain,
const char *subtype) {
int ret = AVAHI_OK;
char svc_name[AVAHI_DOMAIN_NAME_MAX], ptr_name[AVAHI_DOMAIN_NAME_MAX];
-
+
assert(name);
assert(type);
assert(subtype);
goto fail;
fail:
-
+
return ret;
}
k++;
pl--;
}
-
+
b = !b;
sl--;
AvahiEntry *e;
char t[AVAHI_DOMAIN_NAME_MAX], normalized_d[AVAHI_DOMAIN_NAME_MAX], *n;
-
+
AvahiRecord *r;
-
+
assert(s);
assert(name);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, AVAHI_FLAGS_VALID(flags, AVAHI_PUBLISH_USE_WIDE_AREA|AVAHI_PUBLISH_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE, AVAHI_ERR_INVALID_FLAGS);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, port != 0, AVAHI_ERR_INVALID_PORT);
- AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_is_valid_domain_name(name), AVAHI_ERR_INVALID_HOST_NAME);
+ AVAHI_CHECK_VALIDITY_RETURN_NULL(s, avahi_is_valid_fqdn(name), AVAHI_ERR_INVALID_HOST_NAME);
AVAHI_CHECK_VALIDITY_RETURN_NULL(s, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
-
+
if (!domain)
domain = s->domain_name;
avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
return NULL;
}
-
+
AVAHI_ASSERT_TRUE(avahi_normalize_name(domain, normalized_d, sizeof(normalized_d)));
snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", normalized_d);
-
+
if (!(r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME))) {
avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
avahi_free(n);
return NULL;
}
-
+
r->data.srv.priority = 0;
r->data.srv.weight = 0;
r->data.srv.port = port;
transport_flags_from_domain(s, &flags, domain);
AVAHI_CHECK_VALIDITY(s, flags & AVAHI_PUBLISH_USE_MULTICAST, AVAHI_ERR_NOT_SUPPORTED);
-
+
if (address->proto == AVAHI_PROTO_INET) {
hexstring(h, sizeof(h), &address->data, sizeof(AvahiIPv4Address));
snprintf(n, sizeof(n), "ip-%s.%s", h, domain);
if (!r)
return avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
-
+
a_entry = server_add_internal(s, g, interface, protocol, AVAHI_PUBLISH_UNIQUE | AVAHI_PUBLISH_ALLOW_MULTIPLE, r);
avahi_record_unref(r);
if (!a_entry)
return avahi_server_errno(s);
-
+
if (!(s_entry = server_add_dns_server_name(s, g, interface, protocol, flags, domain, type, n, port))) {
if (!(flags & AVAHI_PUBLISH_UPDATE))
avahi_entry_free(s, a_entry);
/* If the entry group was established for a time longer then
* 5s, reset the establishment trial counter */
-
+
if (avahi_age(&g->established_at) > 5000000)
g->n_register_try = 0;
+ } else if (g->state == AVAHI_ENTRY_GROUP_REGISTERING) {
+ if (g->register_time_event) {
+ avahi_time_event_free(g->register_time_event);
+ g->register_time_event = NULL;
+ }
}
-
+
if (state == AVAHI_ENTRY_GROUP_ESTABLISHED)
/* If the entry group is now established, remember the time
* this happened */
-
+
gettimeofday(&g->established_at, NULL);
-
+
g->state = state;
-
+
if (g->callback)
g->callback(g->server, g, state, g->userdata);
}
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;
return g;
}
+static void cleanup_time_event_callback(AVAHI_GCC_UNUSED AvahiTimeEvent *e, void* userdata) {
+ AvahiServer *s = userdata;
+
+ assert(s);
+
+ avahi_cleanup_dead_entries(s);
+}
+
+static void schedule_cleanup(AvahiServer *s) {
+ struct timeval tv;
+
+ assert(s);
+
+ if (!s->cleanup_time_event)
+ s->cleanup_time_event = avahi_time_event_new(s->time_event_queue, avahi_elapse_time(&tv, 1000, 0), &cleanup_time_event_callback, s);
+}
+
void avahi_s_entry_group_free(AvahiSEntryGroup *g) {
AvahiEntry *e;
-
+
assert(g);
assert(g->server);
}
g->dead = 1;
-
+
g->server->need_group_cleanup = 1;
g->server->need_entry_cleanup = 1;
+
+ schedule_cleanup(g->server);
}
static void entry_group_commit_real(AvahiSEntryGroup *g) {
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);
+ if (avahi_s_entry_group_is_empty(g))
+ return avahi_server_set_errno(g->server, AVAHI_ERR_IS_EMPTY);
+
g->n_register_try++;
avahi_timeval_add(&g->register_time,
/* 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);
}
void avahi_s_entry_group_reset(AvahiSEntryGroup *g) {
AvahiEntry *e;
assert(g);
-
+
for (e = g->entries; e; e = e->by_group_next) {
if (!e->dead) {
avahi_goodbye_entry(g->server, e, 1, 1);
}
g->server->need_entry_cleanup = 1;
- if (g->register_time_event) {
- avahi_time_event_free(g->register_time_event);
- g->register_time_event = NULL;
- }
-
g->n_probing = 0;
- gettimeofday(&g->register_time, NULL);
-
avahi_s_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED);
+
+ schedule_cleanup(g->server);
}
int avahi_entry_is_commited(AvahiEntry *e) {
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