1 /*** 2 This file is part of avahi. 3 4 avahi is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 avahi is distributed in the hope that it will be useful, but WITHOUT 10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 12 Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with avahi; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 17 USA. 18 ***/ 19 20 #ifdef HAVE_CONFIG_H 21 #include <config.h> 22 #endif 23 24 #include <string.h> 25 26 #include "avahi-common/avahi-malloc.h" 27 #include <avahi-common/dbus.h> 28 #include <avahi-common/error.h> 29 #include <avahi-core/log.h> 30 31 #include "dbus-util.h" 32 #include "dbus-internal.h" 33 34 void avahi_dbus_async_service_resolver_free(AsyncServiceResolverInfo *i) { 35 assert(i); 36 37 if (i->service_resolver) 38 avahi_s_service_resolver_free(i->service_resolver); 39 40 if (i->path) { 41 dbus_connection_unregister_object_path(server->bus, i->path); 42 avahi_free(i->path); 43 } 44 45 AVAHI_LLIST_REMOVE(AsyncServiceResolverInfo, async_service_resolvers, i->client->async_service_resolvers, i); 46 47 assert(i->client->n_objects >= 1); 48 i->client->n_objects--; 49 50 avahi_free(i); 51 } 52 53 void avahi_dbus_async_service_resolver_callback( 54 AvahiSServiceResolver *r, 55 AvahiIfIndex interface, 56 AvahiProtocol protocol, 57 AvahiResolverEvent event, 58 const char *name, 59 const char *type, 60 const char *domain, 61 const char *host_name, 62 const AvahiAddress *a, 63 uint16_t port, 64 AvahiStringList *txt, 65 AvahiLookupResultFlags flags, 66 void* userdata) { 67 68 AsyncServiceResolverInfo *i = userdata; 69 DBusMessage *reply; 70 71 assert(r); 72 assert(i); 73 74 reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, avahi_dbus_map_resolve_signal_name(event)); 75 76 if (!reply) { 77 avahi_log_error("Failed allocate message"); 78 return; 79 } 80 81 if (event == AVAHI_RESOLVER_FOUND) { 82 char t[AVAHI_ADDRESS_STR_MAX], *pt = t; 83 int32_t i_interface, i_protocol, i_aprotocol; 84 uint32_t u_flags; 85 86 assert(host_name); 87 88 /* avahi_log_debug(__FILE__": [%s] Successfully resolved service <%s.%s.%s>", i->path, name, type, domain); */ 89 90 if (a) 91 avahi_address_snprint(t, sizeof(t), a); 92 else 93 t[0] = 0; 94 95 if (!name) 96 name = ""; 97 98 if (avahi_dbus_is_our_own_service(i->client, interface, protocol, name, type, domain) > 0) 99 flags |= AVAHI_LOOKUP_RESULT_OUR_OWN; 100 101 i_interface = (int32_t) interface; 102 i_protocol = (int32_t) protocol; 103 if (a) 104 i_aprotocol = (int32_t) a->proto; 105 else 106 i_aprotocol = AVAHI_PROTO_UNSPEC; 107 u_flags = (uint32_t) flags; 108 109 dbus_message_append_args( 110 reply, 111 DBUS_TYPE_INT32, &i_interface, 112 DBUS_TYPE_INT32, &i_protocol, 113 DBUS_TYPE_STRING, &name, 114 DBUS_TYPE_STRING, &type, 115 DBUS_TYPE_STRING, &domain, 116 DBUS_TYPE_STRING, &host_name, 117 DBUS_TYPE_INT32, &i_aprotocol, 118 DBUS_TYPE_STRING, &pt, 119 DBUS_TYPE_UINT16, &port, 120 DBUS_TYPE_INVALID); 121 122 avahi_dbus_append_string_list(reply, txt); 123 124 dbus_message_append_args( 125 reply, 126 DBUS_TYPE_UINT32, &u_flags, 127 DBUS_TYPE_INVALID); 128 } else { 129 assert(event == AVAHI_RESOLVER_FAILURE); 130 avahi_dbus_append_server_error(reply); 131 } 132 133 dbus_message_set_destination(reply, i->client->name); 134 dbus_connection_send(server->bus, reply, NULL); 135 dbus_message_unref(reply); 136 } 137 138 DBusHandlerResult avahi_dbus_msg_async_service_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) { 139 DBusError error; 140 AsyncServiceResolverInfo *i = userdata; 141 142 assert(c); 143 assert(m); 144 assert(i); 145 146 dbus_error_init(&error); 147 148 avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s", 149 dbus_message_get_interface(m), 150 dbus_message_get_path(m), 151 dbus_message_get_member(m)); 152 153 /* Introspection */ 154 if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect")) 155 return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.ServiceResolver.xml"); 156 157 /* Access control */ 158 if (strcmp(dbus_message_get_sender(m), i->client->name)) 159 return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL); 160 161 if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Free")) { 162 163 if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) { 164 avahi_log_warn("Error parsing ServiceResolver::Free message"); 165 goto fail; 166 } 167 168 avahi_dbus_async_service_resolver_free(i); 169 return avahi_dbus_respond_ok(c, m); 170 } 171 172 avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m)); 173 174 fail: 175 if (dbus_error_is_set(&error)) 176 dbus_error_free(&error); 177 178 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; 179 } 180
