#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 2000
+#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(key);
for (e = g_hash_table_lookup(s->entries_by_key, key); e; e = e->by_key_next)
- withdraw_entry(s, e);
+ if (!e->dead)
+ withdraw_entry(s, e);
}
static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
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;
}
}
- t = avahi_record_to_string(record);
if (!ours) {
if (won)
- g_message("xxx Recieved conflicting probe [%s]. Local host won.", t);
+ avahi_log_debug("Recieved conflicting probe [%s]. Local host won.", t);
else if (lost) {
- g_message("yyy 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;
/* Refresh */
t = avahi_record_to_string(record);
- g_message("Recieved record with bad TTL [%s]. Refreshing.", 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_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
return;
for (j = s->monitor->interfaces; j; j = j->interface_next)
- if (j != i && (s->config.ipv_reflect || j->protocol == i->protocol))
+ if (j != i && (s->config.reflect_ipv || j->protocol == i->protocol))
avahi_interface_post_response(j, r, flush_cache, NULL, TRUE);
}
return;
for (j = s->monitor->interfaces; j; j = j->interface_next)
- if (j != i && (s->config.ipv_reflect || j->protocol == i->protocol)) {
+ if (j != i && (s->config.reflect_ipv || j->protocol == i->protocol)) {
/* Post the query to other networks */
avahi_interface_post_query(j, k, TRUE);
return;
for (j = s->monitor->interfaces; j; j = j->interface_next)
- if (j != i && (s->config.ipv_reflect || j->protocol == i->protocol))
+ 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;
}
if (!legacy_unicast)
reflect_query(s, i, key);
- avahi_query_scheduler_incoming(i->query_scheduler, 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);
}
}
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_packet(AvahiServer *s, AvahiDnsPacket *p, AvahiInterface *i, const AvahiAddress *a) {
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)) {
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, index = (guint) -1;
+ guint n, idx = (guint) -1;
AvahiLegacyUnicastReflectSlot *slot;
g_assert(s);
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++) {
- index = s->legacy_unicast_reflect_id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+ idx = s->legacy_unicast_reflect_id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
- if (!s->legacy_unicast_reflect_slots[index])
+ if (!s->legacy_unicast_reflect_slots[idx])
break;
}
- if (index == (guint) -1 || s->legacy_unicast_reflect_slots[index])
+ if (idx == (guint) -1 || s->legacy_unicast_reflect_slots[idx])
return NULL;
- slot = s->legacy_unicast_reflect_slots[index] = g_new(AvahiLegacyUnicastReflectSlot, 1);
+ 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 index;
+ guint idx;
g_assert(s);
g_assert(slot);
- index = slot->id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+ idx = slot->id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
- g_assert(s->legacy_unicast_reflect_slots[index] == slot);
+ 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[index] = NULL;
+ s->legacy_unicast_reflect_slots[idx] = NULL;
}
static void free_slots(AvahiServer *s) {
- guint index;
+ guint idx;
g_assert(s);
if (!s->legacy_unicast_reflect_slots)
return;
- for (index = 0; index < AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS; index ++)
- if (s->legacy_unicast_reflect_slots[index])
- deallocate_slot(s, s->legacy_unicast_reflect_slots[index]);
+ 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 index;
+ guint idx;
g_assert(s);
if (!s->legacy_unicast_reflect_slots)
return NULL;
- index = id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
+ idx = id % AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS;
- if (!s->legacy_unicast_reflect_slots[index] || s->legacy_unicast_reflect_slots[index]->id != id)
+ if (!s->legacy_unicast_reflect_slots[idx] || s->legacy_unicast_reflect_slots[idx]->id != id)
return NULL;
- return s->legacy_unicast_reflect_slots[index];
+ return s->legacy_unicast_reflect_slots[idx];
}
static void legacy_unicast_reflect_slot_timeout(AvahiTimeEvent *e, void *userdata) {
if (!s->config.enable_reflector)
return;
-/* g_message("legacy unicast reflectr"); */
+/* avahi_log_debug("legacy unicast reflector"); */
/* Reflecting legacy unicast queries is a little more complicated
than reflecting normal queries, since we must route the
if (!(slot = allocate_slot(s))) {
/* No slot available, we drop this legacy unicast query */
- g_warning("No slot available for legacy unicast reflection, dropping query packet.");
+ avahi_log_warn("No slot available for legacy unicast reflection, dropping query packet.");
return;
}
for (j = s->monitor->interfaces; j; j = j->interface_next)
if (avahi_interface_relevant(j) &&
j != i &&
- (s->config.ipv_reflect || j->protocol == i->protocol)) {
+ (s->config.reflect_ipv || j->protocol == i->protocol)) {
- if (j->protocol == AF_INET && s->fd_legacy_unicast_ipv4 >= 0) {
+ 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 == AF_INET6 && s->fd_legacy_unicast_ipv6 >= 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);
}
socklen_t l = sizeof(lsa);
if (getsockname(s->fd_legacy_unicast_ipv4, &lsa, &l) != 0)
- g_warning("getsockname(): %s", strerror(errno));
+ avahi_log_warn("getsockname(): %s", strerror(errno));
else
- return lsa.sin_port == ((struct sockaddr_in*) sa)->sin_port;
+ return lsa.sin_port == ((const struct sockaddr_in*) sa)->sin_port;
}
socklen_t l = sizeof(lsa);
if (getsockname(s->fd_legacy_unicast_ipv6, &lsa, &l) != 0)
- g_warning("getsockname(): %s", strerror(errno));
+ avahi_log_warn("getsockname(): %s", strerror(errno));
else
- return lsa.sin6_port == ((struct sockaddr_in6*) sa)->sin6_port;
+ return lsa.sin6_port == ((const struct sockaddr_in6*) sa)->sin6_port;
}
return FALSE;
}
-static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, gint iface, gint ttl) {
+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, 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); */
+/* 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);
return;
if (avahi_dns_packet_check_valid(p) < 0) {
- g_warning("Recieved invalid packet.");
+ avahi_log_warn("Recieved invalid packet.");
return;
}
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;
}
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_packet(s, p, i, &a);
-/* g_message("Handled response"); */
+/* avahi_log_debug("Handled response"); */
}
}
-static void dispatch_legacy_unicast_packet(AvahiServer *s, AvahiDnsPacket *p, const struct sockaddr *sa, gint iface, gint ttl) {
+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;
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 legacy unicast packet recieved on interface '%s.%i'.", i->hardware->name, i->protocol); */
+/* 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);
return;
if (avahi_dns_packet_check_valid(p) < 0 || avahi_dns_packet_is_query(p)) {
- g_warning("Recieved invalid packet.");
+ avahi_log_warn("Recieved invalid packet.");
return;
}
if (!(slot = find_slot(s, avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_ID)))) {
- g_warning("Recieved legacy unicast response with unknown id");
+ avahi_log_warn("Recieved legacy unicast response with unknown id");
return;
}
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->fd_ipv4 >= 0 && (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);
+ 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)) {
- if ((p = avahi_recv_dns_packet_ipv6(s->fd_ipv6, &sa6, &iface, &ttl))) {
- dispatch_packet(s, p, (struct sockaddr*) &sa6, iface, ttl);
+ 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->fd_legacy_unicast_ipv4 >= 0 && (s->pollfd_legacy_unicast_ipv4.revents & G_IO_IN)) {
- if ((p = avahi_recv_dns_packet_ipv4(s->fd_legacy_unicast_ipv4, &sa, &iface, &ttl))) {
+ 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)) {
- if ((p = avahi_recv_dns_packet_ipv6(s->fd_legacy_unicast_ipv6, &sa6, &iface, &ttl))) {
+ 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 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;
if (state == AVAHI_ENTRY_GROUP_REGISTERING &&
s->state == AVAHI_SERVER_REGISTERING)
avahi_server_increase_host_rr_pending(s);
+
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);
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);
-}
-
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);
+ if (host_name && !avahi_valid_host_name(host_name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
withdraw_host_rrs(s);
g_free(s->host_name);
s->host_name[strcspn(s->host_name, ".")] = 0;
update_fqdn(s);
- delayed_register_stuff(s);
- return 0;
+ register_stuff(s);
+ return AVAHI_OK;
}
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);
+ if (domain_name && !avahi_valid_domain_name(domain_name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
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);
- return 0;
+ register_stuff(s);
+ return AVAHI_OK;
}
-
static void prepare_pollfd(AvahiServer *s, GPollFD *pollfd, gint fd) {
g_assert(s);
g_assert(pollfd);
g_source_add_poll(s->source, pollfd);
}
-AvahiServer *avahi_server_new(GMainContext *c, const AvahiServerConfig *sc, AvahiServerCallback callback, gpointer userdata) {
+static gint valid_server_config(const AvahiServerConfig *sc) {
+
+ if (sc->host_name && !avahi_valid_host_name(sc->host_name))
+ return AVAHI_ERR_INVALID_HOST_NAME;
+
+ if (sc->domain_name && !avahi_valid_domain_name(sc->domain_name))
+ return AVAHI_ERR_INVALID_DOMAIN_NAME;
+
+ return AVAHI_OK;
+}
+
+AvahiServer *avahi_server_new(GMainContext *c, const AvahiServerConfig *sc, AvahiServerCallback callback, gpointer userdata, gint *error) {
AvahiServer *s;
+ gint e;
static GSourceFuncs source_funcs = {
prepare_func,
NULL
};
+ if ((e = valid_server_config(sc)) < 0) {
+ if (error)
+ *error = e;
+ return NULL;
+ }
+
s = g_new(AvahiServer, 1);
s->n_host_rr_pending = 0;
s->need_entry_cleanup = s->need_group_cleanup = s->need_browser_cleanup = FALSE;
s->fd_ipv6 = s->config.use_ipv6 ? avahi_open_socket_ipv6() : -1;
if (s->fd_ipv6 < 0 && s->fd_ipv4 < 0) {
- g_critical("Selected neither IPv6 nor IPv4 support, aborting.\n");
avahi_server_config_free(&s->config);
g_free(s);
+
+ if (error)
+ *error = AVAHI_ERR_NO_NETWORK;
+
return NULL;
}
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");
+ 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;
-
- if (c)
- g_main_context_ref(s->context = c);
- else
- s->context = g_main_context_default();
+
+ 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*));
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;
s->hinfo_entry_group = NULL;
s->browse_domain_entry_group = NULL;
register_stuff(s);
+
+ s->error = AVAHI_OK;
return s;
}
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)
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);
g_free(s);
}
+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 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_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);
e = g_new(AvahiEntry, 1);
e->server = 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);
}
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(s);
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 0;
+ return ret;
}
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 = AVAHI_OK;
g_assert(s);
g_assert(a);
name = name ? (n = avahi_normalize_name(name)) : s->host_name_fqdn;
+
+ if (!avahi_valid_domain_name(name)) {
+ avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+ goto fail;
+ }
- 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);
+
+ if (ret < 0)
+ goto fail;
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);
+ if (ret < 0)
+ goto fail;
+
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);
+
+ if (ret < 0)
+ goto fail;
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);
}
+
+fail:
g_free(n);
- return 0;
+ return ret;
}
-gint 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 0;
+ return ret;
+}
+
+gint avahi_server_add_txt_strlst(
+ AvahiServer *s,
+ AvahiEntryGroup *g,
+ AvahiIfIndex interface,
+ AvahiProtocol protocol,
+ AvahiEntryFlags flags,
+ guint32 ttl,
+ const gchar *name,
+ AvahiStringList *strlst) {
+
+ g_assert(s);
+
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_copy(strlst));
}
-gint avahi_server_add_text_va(
+gint avahi_server_add_txt_va(
AvahiServer *s,
AvahiEntryGroup *g,
- gint interface,
- guchar protocol,
+ 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 0;
+ return server_add_txt_strlst_nocopy(s, g, interface, protocol, flags, ttl, name, avahi_string_list_new_va(va));
}
-gint 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 0;
+ return ret;
}
static void escape_service_name(gchar *d, guint size, const gchar *s) {
*(d++) = 0;
}
-gint 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];
- AvahiRecord *r;
+ gchar *t, *d;
+ AvahiRecord *r = NULL;
+ gint ret = 0;
g_assert(s);
g_assert(type);
g_assert(name);
+ if (!avahi_valid_service_name(name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_NAME);
+
+ if (!avahi_valid_service_type(type))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_TYPE);
+
+ if (domain && !avahi_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (host && !avahi_valid_domain_name(host))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_HOST_NAME);
+
+ if (port == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
+
escape_service_name(ename, sizeof(ename), name);
- if (domain) {
- while (domain[0] == '.')
- domain++;
- } else
+ if (!domain)
domain = s->domain_name;
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);
- r = avahi_record_new_full(svc_name, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV);
+ if ((ret = avahi_server_add_ptr(s, g, interface, protocol, AVAHI_ENTRY_NULL, AVAHI_DEFAULT_TTL, ptr_name, svc_name)) < 0)
+ goto fail;
+
+ 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);
+ if (ret < 0)
+ goto fail;
- 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);
+ ret = server_add_txt_strlst_nocopy(s, g, interface, protocol, AVAHI_ENTRY_UNIQUE, AVAHI_DEFAULT_TTL, svc_name, strlst);
+ strlst = NULL;
- return 0;
+ if (ret < 0)
+ goto fail;
+
+ 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);
+
+fail:
+
+ g_free(d);
+ g_free(t);
+
+ avahi_string_list_free(strlst);
+
+ return ret;
}
-gint 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) {
+
+ g_assert(s);
+ g_assert(type);
+ g_assert(name);
+
+ 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 0;
+ return server_add_service_strlst_nocopy(s, g, interface, protocol, name, type, domain, host, port, avahi_string_list_new_va(va));
}
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 0;
+ 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 (domain && !avahi_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (port == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
+
+ 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);
+
+ if (ret < 0)
+ return ret;
+
+ return avahi_server_add_dns_server_name(s, g, interface, protocol, domain, type, n, port);
+}
+
+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 && !avahi_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ if (port == 0)
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_PORT);
+
+ if (!domain)
+ 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);
if (g->state == state)
return;
+ g_assert(state >= AVAHI_ENTRY_GROUP_UNCOMMITED && state <= AVAHI_ENTRY_GROUP_COLLISION);
+
g->state = state;
- if (g->callback) {
+ if (g->callback)
g->callback(g->server, g, state, g->userdata);
- return;
- }
}
AvahiEntryGroup *avahi_entry_group_new(AvahiServer *s, AvahiEntryGroupCallback callback, gpointer userdata) {
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;
}
+static void entry_group_commit_real(AvahiEntryGroup *g) {
+ g_assert(g);
+
+ g_get_current_time(&g->register_time);
+
+ avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
+
+ if (!g->dead) {
+ avahi_announce_group(g->server, g);
+ avahi_entry_group_check_probed(g, FALSE);
+ }
+}
+
+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)
- return -1;
+ if (g->state != AVAHI_ENTRY_GROUP_UNCOMMITED && g->state != AVAHI_ENTRY_GROUP_COLLISION)
+ return avahi_server_set_errno(g->server, AVAHI_ERR_BAD_STATE);
- avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
- avahi_announce_group(g->server, g);
- avahi_entry_group_check_probed(g, FALSE);
+ g->n_register_try++;
- return 0;
+ 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 */
+ 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);
+
+ avahi_entry_group_change_state(g, AVAHI_ENTRY_GROUP_REGISTERING);
+ }
+
+ 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;
+ }
+ }
+
+ 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->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->ipv_reflect = FALSE;
- c->register_workstation = TRUE;
+ c->reflect_ipv = FALSE;
return c;
}
return ret;
}
+
+const gchar *avahi_strerror(gint error) {
+ g_assert(-error >= 0 && -error < -AVAHI_ERR_MAX);
+
+ const gchar * const msg[- AVAHI_ERR_MAX] = {
+ "OK",
+ "Operation failed",
+ "Bad state",
+ "Invalid host name",
+ "Invalid domain name",
+ "No suitable network protocol available",
+ "Invalid DNS TTL",
+ "Resource record key is pattern",
+ "Local name collision",
+ "Invalid record",
+ "Invalid service name",
+ "Invalid service type",
+ "Invalid port number",
+ "Invalid record key",
+ "Invalid address",
+ "Timeout reached",
+ "Too many clients",
+ "Too many objects",
+ "Too many entries",
+ "OS Error",
+ "Access denied"
+ };
+
+ return msg[-error];
+}
+
+gint avahi_server_errno(AvahiServer *s) {
+ g_assert(s);
+
+ return s->error;
+}
+
+/* Just for internal use */
+gint avahi_server_set_errno(AvahiServer *s, gint error) {
+ g_assert(s);
+
+ return s->error = error;
+}
+
projects / catta / blobdiff