#include <string.h>
#include <sys/utsname.h>
#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
#include "server.h"
#include "util.h"
#include "iface.h"
#include "socket.h"
#include "browse.h"
+#include "log.h"
-#define AVAHI_HOST_RR_HOLDOFF_MSEC 1000
+#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;
while (g->entries)
free_entry(s, g->entries);
+ if (g->register_time_event)
+ avahi_time_event_queue_remove(s->time_event_queue, g->register_time_event);
+
AVAHI_LLIST_REMOVE(AvahiEntryGroup, groups, s->groups, g);
g_free(g);
}
g_assert(r);
g_assert(callback);
- if (r->key->class == AVAHI_DNS_CLASS_IN) {
+ 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);
enum_aux_records(s, i, r->data.ptr.name, AVAHI_DNS_TYPE_TXT, callback, userdata);
g_assert(i);
g_assert(k);
-/* g_message("Posting responses matching [%s]", txt = avahi_key_to_string(k)); */
+/* avahi_log_debug("Posting responses matching [%s]", txt = avahi_key_to_string(k)); */
/* g_free(txt); */
if (avahi_key_is_pattern(k)) {
AvahiEntry *k;
for (k = e->group->entries; k; k = k->by_group_next) {
- avahi_goodbye_entry(s, k, FALSE);
- k->dead = TRUE;
+ if (!k->dead) {
+ avahi_goodbye_entry(s, k, FALSE);
+ k->dead = TRUE;
+ }
}
-
+
+ e->group->n_probing = 0;
+
avahi_entry_group_change_state(e->group, AVAHI_ENTRY_GROUP_COLLISION);
} else {
avahi_goodbye_entry(s, e, FALSE);
g_assert(record);
g_assert(i);
+ t = avahi_record_to_string(record);
+
+/* avahi_log_debug("incoming_probe()"); */
+
for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
gint cmp;
n = e->by_key_next;
- if (e->dead || !avahi_entry_probing(s, e, i))
+ if (e->dead)
continue;
if ((cmp = avahi_record_lexicographical_compare(e->record, record)) == 0) {
ours = TRUE;
break;
- } else if (cmp > 0)
- won = TRUE;
- else /* cmp < 0 */
- lost = TRUE;
+ } else {
+
+ if (avahi_entry_probing(s, e, i)) {
+ if (cmp > 0)
+ won = TRUE;
+ else /* cmp < 0 */
+ lost = TRUE;
+ }
+ }
}
- t = avahi_record_to_string(record);
-
if (!ours) {
if (won)
- g_message("Recieved conflicting probe [%s]. Local host won.", t);
+ avahi_log_debug("Recieved conflicting probe [%s]. Local host won.", t);
else if (lost) {
- g_message("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
+ avahi_log_debug("Recieved conflicting probe [%s]. Local host lost. Withdrawing.", t);
withdraw_rrset(s, record->key);
- }
+ }/* else */
+/* avahi_log_debug("Not conflicting probe"); */
}
g_free(t);
g_assert(record);
-/* g_message("CHECKING FOR CONFLICT: [%s]", t); */
+/* avahi_log_debug("CHECKING FOR CONFLICT: [%s]", t); */
for (e = g_hash_table_lookup(s->entries_by_key, record->key); e; e = n) {
n = e->by_key_next;
/* Either our entry or the other is intended to be unique, so let's check */
- if (avahi_entry_registered(s, e, i)) {
-
- if (avahi_record_equal_no_ttl(e->record, record)) {
- ours = TRUE; /* We have an identical record, so this is no conflict */
+ if (avahi_record_equal_no_ttl(e->record, record)) {
+ ours = TRUE; /* 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_registered(s, e, i)) {
+ gchar *t;
+ /* Refresh */
+ t = avahi_record_to_string(record);
- /* Check wheter there is a TTL conflict */
- if (record->ttl <= e->record->ttl/2) {
- gchar *t;
- /* Refresh */
- t = avahi_record_to_string(record);
-
- g_message("Recieved record with bad TTL [%s]. Refreshing.", t);
- avahi_server_prepare_matching_responses(s, i, e->record->key, FALSE);
- valid = FALSE;
-
- g_free(t);
- }
+ avahi_log_debug("Recieved record with bad TTL [%s]. Refreshing.", t);
+ avahi_server_prepare_matching_responses(s, i, e->record->key, FALSE);
+ valid = FALSE;
+
+ g_free(t);
+ }
+
+ /* There's no need to check the other entries of this RRset */
+ break;
+
+ } else {
+
+ if (avahi_entry_registered(s, e, i)) {
- /* There's no need to check the other entries of this RRset */
- break;
- } else {
/* A conflict => we have to return to probe mode */
conflict = TRUE;
conflicting_entry = e;
- }
- } else if (avahi_entry_probing(s, e, i)) {
+ } else if (avahi_entry_probing(s, e, i)) {
- if (!avahi_record_equal_no_ttl(record, e->record)) {
-
/* We are currently registering a matching record, but
* someone else already claimed it, so let's
* withdraw */
}
}
-/* g_message("ours=%i conflict=%i", ours, conflict); */
+/* avahi_log_debug("ours=%i conflict=%i", ours, conflict); */
if (!ours && conflict) {
gchar *t;
t = avahi_record_to_string(record);
if (withdraw_immediately) {
- g_message("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
+ avahi_log_debug("Recieved conflicting record [%s] with local record to be. Withdrawing.", t);
withdraw_rrset(s, record->key);
} else {
g_assert(conflicting_entry);
- g_message("Recieved conflicting record [%s]. Resetting our record.", t);
+ avahi_log_debug("Recieved conflicting record [%s]. Resetting our record.", t);
avahi_entry_return_to_initial_state(s, conflicting_entry, i);
- /* Local unique records are returned to probin
+ /* Local unique records are returned to probing
* state. Local shared records are reannounced. */
}
avahi_server_enumerate_aux_records(s, i, r, append_aux_callback, &unicast_response);
}
-void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
+void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, guint16 port, gboolean legacy_unicast, gboolean immediately) {
g_assert(s);
g_assert(i);
avahi_dns_packet_inc_field(reply, AVAHI_DNS_FIELD_ANCOUNT);
else {
gchar *t = avahi_record_to_string(r);
- g_warning("Record [%s] not fitting in legacy unicast packet, dropping.", t);
+ avahi_log_warn("Record [%s] not fitting in legacy unicast packet, dropping.", t);
g_free(t);
}
while ((r = avahi_record_list_next(s->record_list, &flush_cache, &unicast_response, &auxiliary))) {
- if (!avahi_interface_post_response(i, r, flush_cache, a, !tc && flush_cache && !auxiliary) && unicast_response) {
+ 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);
avahi_dns_packet_free(reply);
gchar *t = avahi_record_to_string(r);
- g_warning("Record [%s] too large, doesn't fit in any packet!", t);
+ avahi_log_warn("Record [%s] too large, doesn't fit in any packet!", t);
g_free(t);
break;
} else
avahi_record_list_flush(s->record_list);
}
-static void handle_query(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
+
+static void reflect_response(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, gboolean flush_cache) {
+ AvahiInterface *j;
+
+ g_assert(s);
+ g_assert(i);
+ g_assert(r);
+
+ if (!s->config.enable_reflector)
+ return;
+
+ for (j = s->monitor->interfaces; j; j = j->interface_next)
+ if (j != i && (s->config.reflect_ipv || j->protocol == i->protocol))
+ avahi_interface_post_response(j, r, flush_cache, NULL, TRUE);
+}
+
+static gpointer reflect_cache_walk_callback(AvahiCache *c, AvahiKey *pattern, AvahiCacheEntry *e, gpointer userdata) {
+ AvahiServer *s = userdata;
+
+ g_assert(c);
+ g_assert(pattern);
+ g_assert(e);
+ g_assert(s);
+
+ avahi_record_list_push(s->record_list, e->record, e->cache_flush, FALSE, FALSE);
+ return NULL;
+}
+
+static void reflect_query(AvahiServer *s, AvahiInterface *i, AvahiKey *k) {
+ AvahiInterface *j;
+
+ g_assert(s);
+ g_assert(i);
+ g_assert(k);
+
+ if (!s->config.enable_reflector)
+ return;
+
+ 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, TRUE);
+
+ /* Reply from caches of other network. This is needed to
+ * "work around" known answer suppression. */
+
+ avahi_cache_walk(j->cache, k, reflect_cache_walk_callback, s);
+ }
+}
+
+static void reflect_probe(AvahiServer *s, AvahiInterface *i, AvahiRecord *r) {
+ AvahiInterface *j;
+
+ g_assert(s);
+ g_assert(i);
+ g_assert(r);
+
+ if (!s->config.enable_reflector)
+ return;
+
+ for (j = s->monitor->interfaces; j; j = j->interface_next)
+ if (j != i && (s->config.reflect_ipv || j->protocol == i->protocol))
+ avahi_interface_post_probe(j, r, TRUE);
+}
+
+static void handle_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port, gboolean legacy_unicast) {
guint n;
+ gboolean is_probe;
g_assert(s);
g_assert(p);
g_assert(i);
g_assert(a);
-/* g_message("query"); */
+/* avahi_log_debug("query"); */
g_assert(avahi_record_list_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 --) {
gboolean unicast_response = FALSE;
if (!(key = avahi_dns_packet_consume_key(p, &unicast_response))) {
- g_warning("Packet too short (1)");
+ avahi_log_warn("Packet too short (1)");
goto fail;
}
- avahi_query_scheduler_incoming(i->query_scheduler, key);
+ if (!legacy_unicast)
+ reflect_query(s, i, key);
+
+ 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);
}
gboolean unique = FALSE;
if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
- g_warning("Packet too short (2)");
+ avahi_log_warn("Packet too short (2)");
goto fail;
}
gboolean unique = FALSE;
if (!(record = avahi_dns_packet_consume_record(p, &unique))) {
- g_warning("Packet too short (3)");
+ avahi_log_warn("Packet too short (3)");
goto fail;
}
- if (record->key->type != AVAHI_DNS_TYPE_ANY)
+ if (!avahi_key_is_pattern(record->key)) {
+ reflect_probe(s, i, record);
incoming_probe(s, record, i);
+ }
avahi_record_unref(record);
}
if (!avahi_record_list_empty(s->record_list))
- avahi_server_generate_response(s, i, p, a, port, legacy_unicast);
+ 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(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
+static void handle_response_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
guint n;
g_assert(s);
g_assert(i);
g_assert(a);
-/* g_message("response"); */
+/* 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--) {
/* gchar *txt; */
if (!(record = avahi_dns_packet_consume_record(p, &cache_flush))) {
- g_warning("Packet too short (4)");
+ avahi_log_warn("Packet too short (4)");
break;
}
- if (record->key->type != AVAHI_DNS_TYPE_ANY) {
+ if (!avahi_key_is_pattern(record->key)) {
-/* g_message("Handling response: %s", txt = avahi_record_to_string(record)); */
+/* avahi_log_debug("Handling response: %s", txt = avahi_record_to_string(record)); */
/* g_free(txt); */
if (handle_conflict(s, i, record, cache_flush, a)) {
+ 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
+ here. */
+ if (!avahi_record_list_empty(s->record_list))
+ avahi_server_generate_response(s, i, NULL, NULL, 0, FALSE, TRUE);
+}
+
+static AvahiLegacyUnicastReflectSlot* allocate_slot(AvahiServer *s) {
+ guint n, idx = (guint) -1;
+ AvahiLegacyUnicastReflectSlot *slot;
+
+ g_assert(s);
+
+ if (!s->legacy_unicast_reflect_slots)
+ s->legacy_unicast_reflect_slots = g_new0(AvahiLegacyUnicastReflectSlot*, AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS);
+
+ 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 (idx == (guint) -1 || s->legacy_unicast_reflect_slots[idx])
+ return NULL;
+
+ slot = s->legacy_unicast_reflect_slots[idx] = g_new(AvahiLegacyUnicastReflectSlot, 1);
+ slot->id = s->legacy_unicast_reflect_id++;
+ slot->server = s;
+ return slot;
+}
+
+static void deallocate_slot(AvahiServer *s, AvahiLegacyUnicastReflectSlot *slot) {
+ guint idx;
+
+ g_assert(s);
+ g_assert(slot);
+
+ idx = slot->id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+
+ g_assert(s->legacy_unicast_reflect_slots[idx] == slot);
+
+ avahi_time_event_queue_remove(s->time_event_queue, slot->time_event);
+
+ g_free(slot);
+ s->legacy_unicast_reflect_slots[idx] = NULL;
+}
+
+static void free_slots(AvahiServer *s) {
+ guint idx;
+ g_assert(s);
+
+ if (!s->legacy_unicast_reflect_slots)
+ return;
+
+ for (idx = 0; idx < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; idx ++)
+ if (s->legacy_unicast_reflect_slots[idx])
+ deallocate_slot(s, s->legacy_unicast_reflect_slots[idx]);
+
+ g_free(s->legacy_unicast_reflect_slots);
+ s->legacy_unicast_reflect_slots = NULL;
+}
+
+static AvahiLegacyUnicastReflectSlot* find_slot(AvahiServer *s, guint16 id) {
+ guint idx;
+
+ g_assert(s);
+
+ if (!s->legacy_unicast_reflect_slots)
+ return NULL;
+
+ idx = id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+
+ if (!s->legacy_unicast_reflect_slots[idx] || s->legacy_unicast_reflect_slots[idx]->id != id)
+ return NULL;
+
+ return s->legacy_unicast_reflect_slots[idx];
+}
+
+static void legacy_unicast_reflect_slot_timeout(AvahiTimeEvent *e, void *userdata) {
+ AvahiLegacyUnicastReflectSlot *slot = userdata;
+
+ g_assert(e);
+ g_assert(slot);
+ g_assert(slot->time_event == e);
+
+ deallocate_slot(slot->server, slot);
+}
+
+static void reflect_legacy_unicast_query_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a, guint16 port) {
+ AvahiLegacyUnicastReflectSlot *slot;
+ AvahiInterface *j;
+
+ g_assert(s);
+ g_assert(p);
+ g_assert(i);
+ g_assert(a);
+ g_assert(port > 0);
+ g_assert(i->protocol == a->family);
+
+ 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
+ some information for finding the right client contact data for
+ response packets. In contrast to normal queries legacy
+ unicast query and response packets are reflected untouched and
+ are not reassembled into larger packets */
+
+ if (!(slot = allocate_slot(s))) {
+ /* No slot available, we drop this legacy unicast query */
+ avahi_log_warn("No slot available for legacy unicast reflection, dropping query packet.");
+ return;
+ }
+
+ slot->original_id = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ID);
+ slot->address = *a;
+ slot->port = port;
+ slot->interface = i->hardware->index;
+
+ avahi_elapse_time(&slot->elapse_time, 2000, 0);
+ slot->time_event = avahi_time_event_queue_add(s->time_event_queue, &slot->elapse_time, legacy_unicast_reflect_slot_timeout, slot);
+
+ /* Patch the packet with our new locally generatedt 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) &&
+ 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);
+ }
+
+ /* Reset the id */
+ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->original_id);
+}
+
+static gboolean originates_from_local_legacy_unicast_socket(AvahiServer *s, const struct sockaddr *sa) {
+ AvahiAddress a;
+ g_assert(s);
+ g_assert(sa);
+
+ if (!s->config.enable_reflector)
+ return FALSE;
+
+ avahi_address_from_sockaddr(sa, &a);
+
+ if (!avahi_address_is_local(s->monitor, &a))
+ return FALSE;
+
+ if (sa->sa_family == AF_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)
+ avahi_log_warn("getsockname(): %s", strerror(errno));
+ else
+ return lsa.sin_port == ((const struct sockaddr_in*) sa)->sin_port;
+
+ }
+
+ if (sa->sa_family == AF_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)
+ avahi_log_warn("getsockname(): %s", strerror(errno));
+ else
+ return lsa.sin6_port == ((const struct sockaddr_in6*) sa)->sin6_port;
+ }
+
+ return FALSE;
+}
+
+static gboolean is_mdns_mcast_address(const AvahiAddress *a) {
+ AvahiAddress b;
+ g_assert(a);
+
+ avahi_address_parse(a->family == AVAHI_PROTO_INET ? AVAHI_IPV4_MCAST_GROUP : AVAHI_IPV6_MCAST_GROUP, a->family, &b);
+ return avahi_address_cmp(a, &b) == 0;
}
-static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, struct sockaddr *sa, gint iface, gint ttl) {
+static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, AvahiAddress *dest, AvahiIfIndex iface, gint ttl) {
AvahiInterface *i;
AvahiAddress a;
guint16 port;
g_assert(s);
g_assert(p);
g_assert(sa);
+ g_assert(dest);
g_assert(iface > 0);
if (!(i = avahi_interface_monitor_get_interface(s->monitor, iface, sa->sa_family)) ||
!avahi_interface_relevant(i)) {
- g_warning("Recieved packet from invalid interface.");
+ avahi_log_warn("Recieved packet from invalid interface.");
return;
}
-/* g_message("new packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */
-
- if (sa->sa_family == AF_INET6) {
- static const guint8 ipv4_in_ipv6[] = {
- 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- 0xFF, 0xFF, 0xFF, 0xFF };
+/* avahi_log_debug("new 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 (memcmp(((struct sockaddr_in6*) sa)->sin6_addr.s6_addr, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0)
- return;
- }
+ if (originates_from_local_legacy_unicast_socket(s, sa))
+ /* This originates from our local reflector, so let's ignore it */
+ return;
if (avahi_dns_packet_check_valid(p) < 0) {
- g_warning("Recieved invalid packet.");
+ avahi_log_warn("Recieved invalid packet.");
return;
}
- port = avahi_port_from_sockaddr(sa);
- avahi_address_from_sockaddr(sa, &a);
-
if (avahi_dns_packet_is_query(p)) {
gboolean legacy_unicast = FALSE;
if (avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ARCOUNT) != 0) {
- g_warning("Invalid query packet.");
+ avahi_log_warn("Invalid query packet.");
return;
}
if ((avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ANCOUNT) != 0 ||
avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_NSCOUNT) != 0)) {
- g_warning("Invalid legacy unicast query packet.");
+ avahi_log_warn("Invalid legacy unicast query packet.");
return;
}
legacy_unicast = TRUE;
}
- handle_query(s, p, i, &a, port, legacy_unicast);
+ if (legacy_unicast)
+ reflect_legacy_unicast_query_packet(s, p, i, &a, port);
+
+ handle_query_packet(s, p, i, &a, port, legacy_unicast);
-/* g_message("Handled query"); */
+/* avahi_log_debug("Handled query"); */
} else {
-
if (port != AVAHI_MDNS_PORT) {
- g_warning("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
+ avahi_log_warn("Recieved repsonse with invalid source port %u on interface '%s.%i'", port, i->hardware->name, i->protocol);
return;
}
- if (ttl != 255) {
- g_warning("Recieved response with invalid TTL %u on interface '%s.%i'.", ttl, i->hardware->name, i->protocol);
- if (s->config.check_response_ttl)
- 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);
+ 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);
+ 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) {
- g_warning("Invalid response packet.");
+ avahi_log_warn("Invalid response packet.");
return;
}
- handle_response(s, p, i, &a);
-/* g_message("Handled response"); */
+ handle_response_packet(s, p, i, &a);
+/* avahi_log_debug("Handled response"); */
}
}
+static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, AvahiIfIndex iface, gint ttl) {
+ AvahiInterface *i, *j;
+ AvahiAddress a;
+ guint16 port;
+ AvahiLegacyUnicastReflectSlot *slot;
+
+ g_assert(s);
+ g_assert(p);
+ g_assert(sa);
+ g_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_check_valid(p) < 0 || avahi_dns_packet_is_query(p)) {
+ avahi_log_warn("Recieved 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");
+ return;
+ }
+
+ if (!(j = avahi_interface_monitor_get_interface(s->monitor, slot->interface, slot->address.family)) ||
+ !avahi_interface_relevant(j))
+ return;
+
+ /* Patch the original ID into this response */
+ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->original_id);
+
+ /* Forward the response to the correct client */
+ avahi_interface_send_packet_unicast(j, p, &slot->address, slot->port);
+
+ /* Undo changes to packet */
+ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_ID, slot->id);
+}
+
static void work(AvahiServer *s) {
struct sockaddr_in6 sa6;
struct sockaddr_in sa;
+ AvahiAddress dest;
AvahiDnsPacket *p;
gint iface = 0;
guint8 ttl;
g_assert(s);
- if (s->pollfd_ipv4.revents & G_IO_IN) {
- if ((p = avahi_recv_dns_packet_ipv4(s->fd_ipv4, &sa, &iface, &ttl))) {
- dispatch_packet(s, p, (struct sockaddr*) &sa, iface, ttl);
+ if (s->fd_ipv4 >= 0 && (s->pollfd_ipv4.revents & G_IO_IN)) {
+ 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);
+ }
+ }
+
+ if (s->fd_ipv6 >= 0 && (s->pollfd_ipv6.revents & G_IO_IN)) {
+ dest.family = AVAHI_PROTO_INET6;
+ 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);
}
}
- if (s->pollfd_ipv6.revents & G_IO_IN) {
- if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
- dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
+ if (s->fd_legacy_unicast_ipv4 >= 0 && (s->pollfd_legacy_unicast_ipv4.revents & G_IO_IN)) {
+ 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);
+ }
+ }
+
+ if (s->fd_legacy_unicast_ipv6 >= 0 && (s->pollfd_legacy_unicast_ipv6.revents & G_IO_IN)) {
+ 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);
}
}
static gboolean check_func(GSource *source) {
AvahiServer* s;
+ gushort revents = 0;
+
g_assert(source);
s = *((AvahiServer**) (((guint8*) source) + sizeof(GSource)));
g_assert(s);
+
+ if (s->fd_ipv4 >= 0)
+ revents |= s->pollfd_ipv4.revents;
+ if (s->fd_ipv6 >= 0)
+ revents |= s->pollfd_ipv6.revents;
+ if (s->fd_legacy_unicast_ipv4 >= 0)
+ revents |= s->pollfd_legacy_unicast_ipv4.revents;
+ if (s->fd_legacy_unicast_ipv6 >= 0)
+ revents |= s->pollfd_legacy_unicast_ipv6.revents;
- return (s->pollfd_ipv4.revents | s->pollfd_ipv6.revents) & (G_IO_IN | G_IO_HUP | G_IO_ERR);
+ return !!(revents & (G_IO_IN | G_IO_HUP | G_IO_ERR));
}
static gboolean dispatch_func(GSource *source, GSourceFunc callback, gpointer user_data) {
static void withdraw_host_rrs(AvahiServer *s) {
g_assert(s);
- if (s->hinfo_entry_group) {
- avahi_entry_group_free(s->hinfo_entry_group);
- s->hinfo_entry_group = NULL;
- }
+ if (s->hinfo_entry_group)
+ avahi_entry_group_reset(s->hinfo_entry_group);
- if (s->browse_domain_entry_group) {
- avahi_entry_group_free(s->browse_domain_entry_group);
- s->browse_domain_entry_group = NULL;
- }
+ if (s->browse_domain_entry_group)
+ avahi_entry_group_reset(s->browse_domain_entry_group);
avahi_update_host_rrs(s->monitor, TRUE);
s->n_host_rr_pending = 0;
g_assert(s);
- if (!s->config.register_hinfo || s->hinfo_entry_group)
+ if (!s->config.publish_hinfo)
return;
-
- s->hinfo_entry_group = avahi_entry_group_new(s, avahi_host_rr_entry_group_callback, NULL);
+
+ if (s->hinfo_entry_group)
+ g_assert(avahi_entry_group_is_empty(s->hinfo_entry_group));
+ else
+ s->hinfo_entry_group = avahi_entry_group_new(s, avahi_host_rr_entry_group_callback, NULL);
/* Fill in HINFO rr */
- r = avahi_record_new_full(s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_HINFO);
+ 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 = g_strdup(g_strup(utsname.machine));
r->data.hinfo.os = g_strdup(g_strup(utsname.sysname));
- avahi_server_add(s, s->hinfo_entry_group, 0, AF_UNSPEC, AVAHI_ENTRY_UNIQUE, r);
+ avahi_server_add(s, s->hinfo_entry_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, AVAHI_ENTRY_UNIQUE, r);
avahi_record_unref(r);
avahi_entry_group_commit(s->hinfo_entry_group);
g_assert(s);
/* Add localhost entries */
- avahi_address_parse("127.0.0.1", AF_INET, &a);
- avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "localhost", &a);
+ 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_address_parse("::1", AF_INET6, &a);
- avahi_server_add_address(s, NULL, 0, AF_UNSPEC, AVAHI_ENTRY_NOPROBE|AVAHI_ENTRY_NOANNOUNCE, "ip6-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);
}
static void register_browse_domain(AvahiServer *s) {
g_assert(s);
- if (!s->config.announce_domain || s->browse_domain_entry_group)
+ if (!s->config.publish_domain)
return;
- s->browse_domain_entry_group = avahi_entry_group_new(s, NULL, NULL);
- avahi_server_add_ptr(s, s->browse_domain_entry_group, 0, AF_UNSPEC, 0, "_browse._dns-sd._udp.local", s->domain_name);
+ if (s->browse_domain_entry_group)
+ g_assert(avahi_entry_group_is_empty(s->browse_domain_entry_group));
+ else
+ s->browse_domain_entry_group = avahi_entry_group_new(s, NULL, NULL);
+
+ 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);
avahi_entry_group_commit(s->browse_domain_entry_group);
}
s->host_name_fqdn = g_strdup_printf("%s.%s", s->host_name, s->domain_name);
}
-static void register_time_event_callback(AvahiTimeEvent *e, gpointer userdata) {
- AvahiServer *s = userdata;
-
- g_assert(e);
- g_assert(s);
-
- g_assert(e == s->register_time_event);
- avahi_time_event_queue_remove(s->time_event_queue, s->register_time_event);
- s->register_time_event = NULL;
-
- if (s->state == AVAHI_SERVER_SLEEPING)
- register_stuff(s);
-}
-
-static void delayed_register_stuff(AvahiServer *s) {
- GTimeVal tv;
-
- g_assert(s);
-
- avahi_elapse_time(&tv, AVAHI_HOST_RR_HOLDOFF_MSEC, 0);
-
- if (s->register_time_event)
- avahi_time_event_queue_update(s->time_event_queue, s->register_time_event, &tv);
- else
- s->register_time_event = avahi_time_event_queue_add(s->time_event_queue, &tv, register_time_event_callback, s);
-}
-
-void avahi_server_set_host_name(AvahiServer *s, const gchar *host_name) {
+gint avahi_server_set_host_name(AvahiServer *s, const gchar *host_name) {
g_assert(s);
g_assert(host_name);
- server_set_state(s, AVAHI_SERVER_SLEEPING);
withdraw_host_rrs(s);
g_free(s->host_name);
s->host_name[strcspn(s->host_name, ".")] = 0;
update_fqdn(s);
- delayed_register_stuff(s);
+ register_stuff(s);
+ return AVAHI_OK;
}
-void avahi_server_set_domain_name(AvahiServer *s, const gchar *domain_name) {
+gint avahi_server_set_domain_name(AvahiServer *s, const gchar *domain_name) {
g_assert(s);
g_assert(domain_name);
- server_set_state(s, AVAHI_SERVER_SLEEPING);
withdraw_host_rrs(s);
g_free(s->domain_name);
- s->domain_name = domain_name ? avahi_normalize_name(domain_name) : g_strdup("local.");
+ s->domain_name = domain_name ? avahi_normalize_name(domain_name) : g_strdup("local");
update_fqdn(s);
- delayed_register_stuff(s);
+ register_stuff(s);
+ return AVAHI_OK;
+}
+
+static void prepare_pollfd(AvahiServer *s, GPollFD *pollfd, gint fd) {
+ g_assert(s);
+ g_assert(pollfd);
+ g_assert(fd >= 0);
+
+ memset(pollfd, 0, sizeof(GPollFD));
+ pollfd->fd = fd;
+ pollfd->events = G_IO_IN|G_IO_ERR|G_IO_HUP;
+ g_source_add_poll(s->source, pollfd);
}
AvahiServer *avahi_server_new(GMainContext *c, const AvahiServerConfig *sc, AvahiServerCallback callback, gpointer userdata) {
}
if (s->fd_ipv4 < 0 && s->config.use_ipv4)
- g_message("Failed to create IPv4 socket, proceeding in IPv6 only mode");
+ avahi_log_notice("Failed to create IPv4 socket, proceeding in IPv6 only mode");
else if (s->fd_ipv6 < 0 && s->config.use_ipv6)
- g_message("Failed to create IPv6 socket, proceeding in IPv4 only mode");
-
- if (c)
- g_main_context_ref(s->context = c);
- else
- s->context = g_main_context_default();
+ 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;
+
+ g_main_context_ref(s->context = (c ? c : g_main_context_default()));
/* Prepare IO source registration */
s->source = g_source_new(&source_funcs, sizeof(GSource) + sizeof(AvahiServer*));
*((AvahiServer**) (((guint8*) s->source) + sizeof(GSource))) = s;
- memset(&s->pollfd_ipv4, 0, sizeof(s->pollfd_ipv4));
- s->pollfd_ipv4.fd = s->fd_ipv4;
- s->pollfd_ipv4.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
- g_source_add_poll(s->source, &s->pollfd_ipv4);
+ if (s->fd_ipv4 >= 0)
+ prepare_pollfd(s, &s->pollfd_ipv4, s->fd_ipv4);
+ if (s->fd_ipv6 >= 0)
+ prepare_pollfd(s, &s->pollfd_ipv6, s->fd_ipv6);
+ if (s->fd_legacy_unicast_ipv4 >= 0)
+ prepare_pollfd(s, &s->pollfd_legacy_unicast_ipv4, s->fd_legacy_unicast_ipv4);
+ if (s->fd_legacy_unicast_ipv6 >= 0)
+ prepare_pollfd(s, &s->pollfd_legacy_unicast_ipv6, s->fd_legacy_unicast_ipv6);
- memset(&s->pollfd_ipv6, 0, sizeof(s->pollfd_ipv6));
- s->pollfd_ipv6.fd = s->fd_ipv6;
- s->pollfd_ipv6.events = G_IO_IN|G_IO_ERR|G_IO_HUP;
- g_source_add_poll(s->source, &s->pollfd_ipv6);
-
g_source_attach(s->source, s->context);
s->callback = callback;
AVAHI_LLIST_HEAD_INIT(AvahiHostNameResolver, s->host_name_resolvers);
AVAHI_LLIST_HEAD_INIT(AvahiAddressResolver, s->address_resolvers);
AVAHI_LLIST_HEAD_INIT(AvahiDomainBrowser, s->domain_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceTypeBrowser, s->service_type_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceBrowser, s->service_browsers);
+ AVAHI_LLIST_HEAD_INIT(AvahiServiceResolver, s->service_resolvers);
+ AVAHI_LLIST_HEAD_INIT(AvahiDNSServerBrowser, s->dns_server_browsers);
+ s->legacy_unicast_reflect_slots = NULL;
+ s->legacy_unicast_reflect_id = 0;
+
/* Get host name */
s->host_name = s->config.host_name ? avahi_normalize_name(s->config.host_name) : avahi_get_host_name();
s->host_name[strcspn(s->host_name, ".")] = 0;
- s->domain_name = s->config.domain_name ? avahi_normalize_name(s->config.domain_name) : g_strdup("local.");
+ s->domain_name = s->config.domain_name ? avahi_normalize_name(s->config.domain_name) : g_strdup("local");
s->host_name_fqdn = NULL;
update_fqdn(s);
s->record_list = avahi_record_list_new();
s->time_event_queue = avahi_time_event_queue_new(s->context, G_PRIORITY_DEFAULT+10); /* Slightly less priority than the FDs */
- s->register_time_event = NULL;
s->state = AVAHI_SERVER_INVALID;
while (s->groups)
free_group(s, s->groups);
+ free_slots(s);
+
+ while (s->dns_server_browsers)
+ avahi_dns_server_browser_free(s->dns_server_browsers);
while (s->host_name_resolvers)
avahi_host_name_resolver_free(s->host_name_resolvers);
while (s->address_resolvers)
avahi_address_resolver_free(s->address_resolvers);
while (s->domain_browsers)
avahi_domain_browser_free(s->domain_browsers);
+ while (s->service_type_browsers)
+ avahi_service_type_browser_free(s->service_type_browsers);
+ while (s->service_browsers)
+ avahi_service_browser_free(s->service_browsers);
+ while (s->service_resolvers)
+ avahi_service_resolver_free(s->service_resolvers);
while (s->record_browsers)
avahi_record_browser_destroy(s->record_browsers);
g_hash_table_destroy(s->record_browser_hashtable);
g_hash_table_destroy(s->entries_by_key);
- if (s->register_time_event)
- avahi_time_event_queue_remove(s->time_event_queue, s->register_time_event);
avahi_time_event_queue_free(s->time_event_queue);
avahi_record_list_free(s->record_list);
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);
g_free(s->host_name);
g_free(s->domain_name);
g_free(s);
}
-void avahi_server_add(
+static gint check_record_conflict(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiRecord *r, AvahiEntryFlags flags) {
+ AvahiEntry *e;
+
+ g_assert(s);
+ g_assert(r);
+
+ for (e = g_hash_table_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;
+}
+
+gint avahi_server_add(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
AvahiRecord *r) {
AvahiEntry *e, *t;
+
g_assert(s);
g_assert(r);
- g_assert(r->key->type != AVAHI_DNS_TYPE_ANY);
+ if (r->ttl == 0)
+ return -1;
+
+ if (avahi_key_is_pattern(r->key))
+ return -1;
+
+ if (check_record_conflict(s, interface, protocol, r, flags) < 0)
+ return -1;
e = g_new(AvahiEntry, 1);
e->server = s;
AVAHI_LLIST_PREPEND(AvahiEntry, by_group, g->entries, e);
avahi_announce_entry(s, e);
+
+ return 0;
}
+
const AvahiRecord *avahi_server_iterate(AvahiServer *s, AvahiEntryGroup *g, void **state) {
AvahiEntry **e = (AvahiEntry**) state;
g_assert(s);
return avahi_record_ref((*e)->record);
}
-void avahi_server_dump(AvahiServer *s, FILE *f) {
+void avahi_server_dump(AvahiServer *s, AvahiDumpCallback callback, gpointer userdata) {
AvahiEntry *e;
+
g_assert(s);
- g_assert(f);
+ g_assert(callback);
- fprintf(f, "\n;;; ZONE DUMP FOLLOWS ;;;\n");
+ callback(";;; ZONE DUMP FOLLOWS ;;;", userdata);
for (e = s->entries; e; e = e->entries_next) {
gchar *t;
+ gchar ln[256];
if (e->dead)
continue;
t = avahi_record_to_string(e->record);
- fprintf(f, "%s ; iface=%i proto=%i\n", t, e->interface, e->protocol);
+ g_snprintf(ln, sizeof(ln), "%s ; iface=%i proto=%i", t, e->interface, e->protocol);
g_free(t);
+
+ callback(ln, userdata);
}
- avahi_dump_caches(s->monitor, f);
+ avahi_dump_caches(s->monitor, callback, userdata);
}
-void avahi_server_add_ptr(
+gint avahi_server_add_ptr(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
+ guint32 ttl,
const gchar *name,
const gchar *dest) {
AvahiRecord *r;
+ gint ret;
g_assert(dest);
- r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR);
+ r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_PTR, ttl);
r->data.ptr.name = avahi_normalize_name(dest);
- avahi_server_add(s, g, interface, protocol, flags, r);
+ ret = avahi_server_add(s, g, interface, protocol, flags, r);
avahi_record_unref(r);
+ return ret;
}
-void avahi_server_add_address(
+gint avahi_server_add_address(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
const gchar *name,
AvahiAddress *a) {
gchar *n = NULL;
+ gint ret = 0;
g_assert(s);
g_assert(a);
name = name ? (n = avahi_normalize_name(name)) : s->host_name_fqdn;
- if (a->family == AF_INET) {
+ if (a->family == AVAHI_PROTO_INET) {
gchar *reverse;
AvahiRecord *r;
- r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A);
+ r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, AVAHI_DEFAULT_TTL_HOST_NAME);
r->data.a.address = a->data.ipv4;
- avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, r);
+ ret = avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
avahi_record_unref(r);
reverse = avahi_reverse_lookup_name_ipv4(&a->data.ipv4);
- avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, reverse, name);
+ ret |= avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
g_free(reverse);
} else {
gchar *reverse;
AvahiRecord *r;
- r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA);
+ r = avahi_record_new_full(name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_AAAA, AVAHI_DEFAULT_TTL_HOST_NAME);
r->data.aaaa.address = a->data.ipv6;
- avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, r);
+ ret = avahi_server_add(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
avahi_record_unref(r);
reverse = avahi_reverse_lookup_name_ipv6_arpa(&a->data.ipv6);
- avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, reverse, name);
+ ret |= avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
g_free(reverse);
reverse = avahi_reverse_lookup_name_ipv6_int(&a->data.ipv6);
- avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, reverse, name);
+ ret |= avahi_server_add_ptr(s, g, interface, protocol, flags | AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL_HOST_NAME, reverse, name);
g_free(reverse);
}
g_free(n);
+
+ return ret;
}
-void avahi_server_add_text_strlst(
+static gint server_add_txt_strlst_nocopy(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
+ guint32 ttl,
const gchar *name,
AvahiStringList *strlst) {
AvahiRecord *r;
+ gint ret;
g_assert(s);
- r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT);
+ r = avahi_record_new_full(name ? name : s->host_name_fqdn, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_TXT, ttl);
r->data.txt.string_list = strlst;
- avahi_server_add(s, g, interface, protocol, flags, r);
+ ret = avahi_server_add(s, g, interface, protocol, flags, r);
avahi_record_unref(r);
+
+ return ret;
}
-void avahi_server_add_text_va(
+gint avahi_server_add_txt_strlst(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
+ guint32 ttl,
+ const gchar *name,
+ AvahiStringList *strlst) {
+
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst));
+}
+
+gint avahi_server_add_txt_va(
+ AvahiServer *s,
+ AvahiEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiEntryFlags flags,
+ guint32 ttl,
const gchar *name,
va_list va) {
-
+
g_assert(s);
- avahi_server_add_text_strlst(s, g, interface, protocol, flags, name, avahi_string_list_new_va(va));
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va));
}
-void avahi_server_add_text(
+gint avahi_server_add_txt(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
AvahiEntryFlags flags,
+ guint32 ttl,
const gchar *name,
...) {
va_list va;
+ gint ret;
g_assert(s);
va_start(va, name);
- avahi_server_add_text_va(s, g, interface, protocol, flags, name, va);
+ ret = avahi_server_add_txt_va(s, g, interface, protocol, flags, ttl, name, va);
va_end(va);
+
+ return ret;
}
static void escape_service_name(gchar *d, guint size, const gchar *s) {
*(d++) = 0;
}
-void avahi_server_add_service_strlst(
+static gint server_add_service_strlst_nocopy(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
- const gchar *type,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
const gchar *name,
+ const gchar *type,
const gchar *domain,
const gchar *host,
guint16 port,
AvahiStringList *strlst) {
gchar ptr_name[256], svc_name[256], ename[64], enum_ptr[256];
+ gchar *t, *d;
AvahiRecord *r;
+ gint ret = 0;
g_assert(s);
g_assert(type);
if (!host)
host = s->host_name_fqdn;
- snprintf(ptr_name, sizeof(ptr_name), "%s.%s", type, domain);
- snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, type, domain);
+ d = avahi_normalize_name(domain);
+ t = avahi_normalize_name(type);
- avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, ptr_name, svc_name);
+ g_snprintf(ptr_name, sizeof(ptr_name), "%s.%s", t, d);
+ g_snprintf(svc_name, sizeof(svc_name), "%s.%s.%s", ename, t, d);
+
+ ret = avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, AVAHI_DEFAULT_TTL, ptr_name, svc_name);
- r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
+ r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME);
r->data.srv.priority = 0;
r->data.srv.weight = 0;
r->data.srv.port = port;
r->data.srv.name = avahi_normalize_name(host);
- avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
+ ret |= avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, r);
avahi_record_unref(r);
- avahi_server_add_text_strlst(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, svc_name, strlst);
+ ret |= server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
- snprintf(enum_ptr, sizeof(enum_ptr), "_services._dns-sd._udp.%s", domain);
- avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, enum_ptr, ptr_name);
+ g_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);
+
+ g_free(d);
+ g_free(t);
+
+ return ret;
}
-void avahi_server_add_service_va(
+gint avahi_server_add_service_strlst(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ const gchar *name,
const gchar *type,
+ const gchar *domain,
+ const gchar *host,
+ guint16 port,
+ AvahiStringList *strlst) {
+
+ return server_add_service_strlst_nocopy(s, g, interface, protocol, name, type, domain, host, port, avahi_string_list_copy(strlst));
+}
+
+gint avahi_server_add_service_va(
+ AvahiServer *s,
+ AvahiEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
const gchar *name,
+ const gchar *type,
const gchar *domain,
const gchar *host,
guint16 port,
g_assert(type);
g_assert(name);
- avahi_server_add_service_strlst(s, g, interface, protocol, type, name, domain, host, port, avahi_string_list_new_va(va));
+ return server_add_service_strlst_nocopy(s, g, interface, protocol, name, type, domain, host, port, avahi_string_list_new_va(va));
}
-void avahi_server_add_service(
+gint avahi_server_add_service(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
- const gchar *type,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
const gchar *name,
+ const gchar *type,
const gchar *domain,
const gchar *host,
guint16 port,
... ){
va_list va;
+ gint ret;
g_assert(s);
g_assert(type);
g_assert(name);
va_start(va, port);
- avahi_server_add_service_va(s, g, interface, protocol, type, name, domain, host, port, va);
+ ret = avahi_server_add_service_va(s, g, interface, protocol, name, type, domain, host, port, va);
va_end(va);
+ return ret;
+}
+
+static void hexstring(gchar *s, size_t sl, const void *p, size_t pl) {
+ static const gchar hex[] = "0123456789abcdef";
+ gboolean b = FALSE;
+ const guint8 *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;
+}
+
+gint avahi_server_add_dns_server_address(
+ AvahiServer *s,
+ AvahiEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ const gchar *domain,
+ AvahiDNSServerType type,
+ const AvahiAddress *address,
+ guint16 port /** should be 53 */) {
+
+ AvahiRecord *r;
+ gint ret;
+ gchar n[64] = "ip-";
+
+ g_assert(s);
+ g_assert(address);
+ g_assert(type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE);
+ g_assert(address->family == AVAHI_PROTO_INET || address->family == AVAHI_PROTO_INET6);
+
+ 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;
+ }
+
+ ret = avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE | AVAHI_ENTRY_ALLOWMUTIPLE, r);
+ avahi_record_unref(r);
+
+ ret |= avahi_server_add_dns_server_name(s, g, interface, protocol, domain, type, n, port);
+
+ return ret;
+}
+
+gint avahi_server_add_dns_server_name(
+ AvahiServer *s,
+ AvahiEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ const gchar *domain,
+ AvahiDNSServerType type,
+ const gchar *name,
+ guint16 port /** should be 53 */) {
+
+ gint ret = -1;
+ gchar t[256], *d;
+ AvahiRecord *r;
+
+ g_assert(s);
+ g_assert(name);
+ g_assert(type == AVAHI_DNS_SERVER_UPDATE || type == AVAHI_DNS_SERVER_RESOLVE);
+
+ if (domain) {
+ while (domain[0] == '.')
+ domain++;
+ } else
+ domain = s->domain_name;
+
+ d = avahi_normalize_name(domain);
+ g_snprintf(t, sizeof(t), "%s.%s", type == AVAHI_DNS_SERVER_RESOLVE ? "_domain._udp" : "_dns-update._udp", d);
+ g_free(d);
+
+ r = avahi_record_new_full(t, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV, AVAHI_DEFAULT_TTL_HOST_NAME);
+ r->data.srv.priority = 0;
+ r->data.srv.weight = 0;
+ r->data.srv.port = port;
+ r->data.srv.name = avahi_normalize_name(name);
+ ret = avahi_server_add(s, g, interface, protocol, AVAHI_ENTRY_NULL, r);
+ avahi_record_unref(r);
+
+ return ret;
}
static void post_query_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
avahi_interface_post_query(i, k, FALSE);
}
-void avahi_server_post_query(AvahiServer *s, gint interface, guchar protocol, AvahiKey *key) {
+void avahi_server_post_query(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, AvahiKey *key) {
g_assert(s);
g_assert(key);
g->dead = FALSE;
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(AvahiEntryGroup, groups, s->groups, g);
g_assert(g->server);
for (e = g->entries; e; e = e->by_group_next) {
- avahi_goodbye_entry(g->server, e, TRUE);
- e->dead = TRUE;
+ if (!e->dead) {
+ avahi_goodbye_entry(g->server, e, TRUE);
+ e->dead = TRUE;
+ }
+ }
+
+ if (g->register_time_event) {
+ avahi_time_event_queue_remove(g->server->time_event_queue, g->register_time_event);
+ g->register_time_event = NULL;
}
g->dead = TRUE;
g->server->need_entry_cleanup = TRUE;
}
-void avahi_entry_group_commit(AvahiEntryGroup *g) {
+static void entry_group_commit_real(AvahiEntryGroup *g) {
g_assert(g);
- g_assert(!g->dead);
-
- if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED)
- return;
avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
avahi_announce_group(g->server, g);
avahi_entry_group_check_probed(g, FALSE);
+
+ g_get_current_time(&g->register_time);
+}
+
+static void entry_group_register_time_event_callback(AvahiTimeEvent *e, gpointer userdata) {
+ AvahiEntryGroup *g = userdata;
+ g_assert(g);
+
+ avahi_log_debug("Holdoff passed, waking up and going on.");
+
+ avahi_time_event_queue_remove(g->server->time_event_queue, g->register_time_event);
+ g->register_time_event = NULL;
+
+ /* Holdoff time passed, so let's start probing */
+ entry_group_commit_real(g);
+}
+
+gint avahi_entry_group_commit(AvahiEntryGroup *g) {
+ GTimeVal now;
+
+ g_assert(g);
+ g_assert(!g->dead);
+
+ if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION)
+ return AVAHI_ERR_BAD_STATE;
+
+ g->n_register_try++;
+
+ 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));
+
+ g_get_current_time(&now);
+
+ 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.");
+
+ entry_group_commit_real(g);
+ } else {
+ avahi_log_debug("Holdoff not passed, sleeping.");
+
+ /* Holdoff time has not yet passed, so let's wait */
+ avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_SLEEPING);
+
+ g_assert(!g->register_time_event);
+ g->register_time_event = avahi_time_event_queue_add(g->server->time_event_queue, &g->register_time, entry_group_register_time_event_callback, g);
+ }
+
+ return AVAHI_OK;
+}
+
+void avahi_entry_group_reset(AvahiEntryGroup *g) {
+ AvahiEntry *e;
+ g_assert(g);
+
+ if (g->register_time_event) {
+ avahi_time_event_queue_remove(g->server->time_event_queue, 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, TRUE);
+ e->dead = TRUE;
+ }
+ }
+
+ g->server->need_entry_cleanup = TRUE;
+ g->n_probing = 0;
+
+ avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_UNCOMMITED);
}
gboolean avahi_entry_commited(AvahiEntry *e) {
return g->userdata;
}
+gboolean avahi_entry_group_is_empty(AvahiEntryGroup *g) {
+ AvahiEntry *e;
+ g_assert(g);
+
+ /* Look for an entry that is not dead */
+ for (e = g->entries; e; e = e->by_group_next)
+ if (!e->dead)
+ return FALSE;
+
+ return TRUE;
+}
+
const gchar* avahi_server_get_domain_name(AvahiServer *s) {
g_assert(s);
g_assert(c);
memset(c, 0, sizeof(AvahiServerConfig));
- c->register_hinfo = TRUE;
- c->register_addresses = TRUE;
c->use_ipv6 = TRUE;
c->use_ipv4 = TRUE;
c->host_name = NULL;
c->domain_name = NULL;
- c->check_response_ttl = TRUE;
- c->announce_domain = TRUE;
+ c->check_response_ttl = FALSE;
+ c->publish_hinfo = TRUE;
+ c->publish_addresses = TRUE;
+ c->publish_workstation = TRUE;
+ c->publish_domain = TRUE;
c->use_iff_running = FALSE;
+ c->enable_reflector = FALSE;
+ c->reflect_ipv = FALSE;
return c;
}
projects / catta / blobdiff