-static void discovery_resolve_callback(AvahiSServiceResolver *resolver, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *name, const char *type, const char *domain, const char *host_name, const AvahiAddress *address, uint16_t port, AvahiStringList *txt, AvahiLookupResultFlags flags, void* userdata)
-{
- meshlink_handle_t *mesh = userdata;
-
- // asserts
- assert(resolver != NULL);
- assert(mesh != NULL);
- assert(mesh->avahi_server != NULL);
-
- pthread_mutex_lock(&(mesh->mesh_mutex));
-
- /* Called whenever a service has been resolved successfully or timed out */
- switch(event)
- {
- case AVAHI_RESOLVER_FAILURE:
- {
- // asserts
- assert(name != NULL);
- assert(type != NULL);
- assert(domain != NULL);
-
- logger(mesh, MESHLINK_WARNING, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_server_errno(mesh->avahi_server)));
- }
- break;
-
- case AVAHI_RESOLVER_FOUND:
- {
- // asserts
- assert(name != NULL);
- assert(type != NULL);
- assert(domain != NULL);
- assert(host_name != NULL);
- assert(address != NULL);
- assert(txt != NULL);
-
- char straddr[AVAHI_ADDRESS_STR_MAX], *strtxt;
-
- logger(mesh, MESHLINK_DEBUG, "(Resolver) Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
-
- avahi_address_snprint(straddr, sizeof(straddr), address);
- strtxt = avahi_string_list_to_string(txt);
- logger(mesh, MESHLINK_DEBUG,
- "\t%s:%u (%s)\n"
- "\tTXT=%s\n"
- "\tcookie is %u\n"
- "\tis_local: %i\n"
- "\twide_area: %i\n"
- "\tmulticast: %i\n"
- "\tcached: %i\n",
- host_name, port, straddr,
- strtxt,
- avahi_string_list_get_service_cookie(txt),
- !!(flags & AVAHI_LOOKUP_RESULT_LOCAL),
- !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
- !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
- !!(flags & AVAHI_LOOKUP_RESULT_CACHED));
- avahi_free(strtxt);
-
- // retrieve fingerprint
- AvahiStringList *node_name_li = avahi_string_list_find(txt, MESHLINK_MDNS_NAME_KEY);
- AvahiStringList *node_fp_li = avahi_string_list_find(txt, MESHLINK_MDNS_FINGERPRINT_KEY);
-
- if(node_name_li != NULL && node_fp_li != NULL)
- {
- char *node_name = (char*)avahi_string_list_get_text(node_name_li) + strlen(MESHLINK_MDNS_NAME_KEY);
- char *node_fp = (char*)avahi_string_list_get_text(node_fp_li) + strlen(MESHLINK_MDNS_FINGERPRINT_KEY);
-
- if(node_name[0] == '=' && node_fp[0] == '=')
- {
- node_name += 1;
- node_fp += 1;
-
- meshlink_node_t *node = meshlink_get_node(mesh, node_name);
-
- if(node != NULL)
- {
- logger(mesh, MESHLINK_INFO, "Node %s is part of the mesh network.\n", node->name);
-
- sockaddr_t naddress;
- memset(&naddress, 0, sizeof(naddress));
-
- switch(address->proto)
- {
- case AVAHI_PROTO_INET:
- {
- naddress.in.sin_family = AF_INET;
- naddress.in.sin_port = htons(port);
- naddress.in.sin_addr.s_addr = address->data.ipv4.address;
- }
- break;
-
- case AVAHI_PROTO_INET6:
- {
- naddress.in6.sin6_family = AF_INET6;
- naddress.in6.sin6_port = htons(port);
- memcpy(naddress.in6.sin6_addr.s6_addr, address->data.ipv6.address, sizeof(naddress.in6.sin6_addr.s6_addr));
- }
- break;
-
- default:
- naddress.unknown.family = AF_UNKNOWN;
- break;
- }
-
- if(naddress.unknown.family != AF_UNKNOWN)
- {
- meshlink_hint_address(mesh, (meshlink_node_t *)node, (struct sockaddr*)&naddress);
- }
- else
- {
- logger(mesh, MESHLINK_WARNING, "Could not resolve node %s to a known address family type.\n", node->name);
- }
- }
- else
- {
- logger(mesh, MESHLINK_WARNING, "Node %s is not part of the mesh network.\n", node_name);
- }
- }
- else
- {
- logger(mesh, MESHLINK_WARNING, "TXT records invalid.\n");
- }
- }
- else
- {
- logger(mesh, MESHLINK_WARNING, "TXT records missing.\n");
- }
- }
- break;
- }
-
- avahi_s_service_resolver_free(resolver);
-
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ break;
+
+ case CATTA_SERVER_COLLISION: {
+ /* A host name collision happened. Let's pick a new name for the server */
+ char hostname[17];
+ generate_rand_string(mesh, hostname, sizeof(hostname));
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ assert(mesh->catta_server);
+ assert(mesh->catta_poll);
+
+ int result = catta_server_set_host_name(mesh->catta_server, hostname);
+
+ if(result < 0) {
+ catta_simple_poll_quit(mesh->catta_poll);
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+ }
+ break;
+
+ case CATTA_SERVER_REGISTERING:
+ pthread_mutex_lock(&mesh->mutex);
+
+ /* Let's drop our registered services. When the server is back
+ * in CATTA_SERVER_RUNNING state we will register them
+ * again with the new host name. */
+ if(mesh->catta_group) {
+ catta_s_entry_group_reset(mesh->catta_group);
+ mesh->catta_group = NULL;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ break;
+
+ case CATTA_SERVER_FAILURE:
+ pthread_mutex_lock(&mesh->mutex);
+
+ assert(mesh->catta_server);
+ assert(mesh->catta_poll);
+
+ /* Terminate on failure */
+ catta_simple_poll_quit(mesh->catta_poll);
+
+ pthread_mutex_unlock(&mesh->mutex);
+ break;
+
+ case CATTA_SERVER_INVALID:
+ break;
+ }