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

   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/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_address_resolver_free(AsyncAddressResolverInfo *i) {
  35     assert(i);
  36
  37     if (i->address_resolver)
  38         avahi_s_address_resolver_free(i->address_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(AsyncAddressResolverInfo, async_address_resolvers, i->client->async_address_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_address_resolver_callback(AvahiSAddressResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const AvahiAddress *address, const char *host_name, AvahiLookupResultFlags flags, void* userdata) {
  54     AsyncAddressResolverInfo *i = userdata;
  55     DBusMessage *reply;
  56
  57     assert(r);
  58     assert(i);
  59
  60     reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, avahi_dbus_map_resolve_signal_name(event));
  61
  62     if (!reply) {
  63         avahi_log_error("Failed allocate message");
  64         return;
  65     }
  66
  67     if (event == AVAHI_RESOLVER_FOUND) {
  68         char t[AVAHI_ADDRESS_STR_MAX], *pt = t;
  69         int32_t i_interface, i_protocol, i_aprotocol;
  70         uint32_t u_flags;
  71
  72         assert(address);
  73         assert(host_name);
  74         avahi_address_snprint(t, sizeof(t), address);
  75
  76         i_interface = (int32_t) interface;
  77         i_protocol = (int32_t) protocol;
  78         i_aprotocol = (int32_t) address->proto;
  79         u_flags = (uint32_t) flags;
  80
  81         dbus_message_append_args(
  82             reply,
  83             DBUS_TYPE_INT32, &i_interface,
  84             DBUS_TYPE_INT32, &i_protocol,
  85             DBUS_TYPE_INT32, &i_aprotocol,
  86             DBUS_TYPE_STRING, &pt,
  87             DBUS_TYPE_STRING, &host_name,
  88             DBUS_TYPE_UINT32, &u_flags,
  89             DBUS_TYPE_INVALID);
  90
  91     }  else {
  92         assert(event == AVAHI_RESOLVER_FAILURE);
  93         avahi_dbus_append_server_error(reply);
  94     }
  95
  96     dbus_message_set_destination(reply, i->client->name);
  97     dbus_connection_send(server->bus, reply, NULL);
  98     dbus_message_unref(reply);
  99 }
 100
 101 DBusHandlerResult avahi_dbus_msg_async_address_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
 102     DBusError error;
 103     AsyncAddressResolverInfo *i = userdata;
 104
 105     assert(c);
 106     assert(m);
 107     assert(i);
 108
 109     dbus_error_init(&error);
 110
 111     avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
 112                     dbus_message_get_interface(m),
 113                     dbus_message_get_path(m),
 114                     dbus_message_get_member(m));
 115
 116     /* Introspection */
 117     if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
 118         return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.AddressResolver.xml");
 119
 120     /* Access control */
 121     if (strcmp(dbus_message_get_sender(m), i->client->name))
 122         return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
 123
 124     if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_ADDRESS_RESOLVER, "Free")) {
 125
 126         if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
 127             avahi_log_warn("Error parsing AddressResolver::Free message");
 128             goto fail;
 129         }
 130
 131         avahi_dbus_async_address_resolver_free(i);
 132         return avahi_dbus_respond_ok(c, m);
 133     }
 134
 135     avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
 136
 137 fail:
 138     if (dbus_error_is_set(&error))
 139         dbus_error_free(&error);
 140
 141     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 142 }