git.meshlink.io Git - catta/blob - avahi-daemon/dbus-async-service-resolver.c

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