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
avahi_dbus_async_address_resolver_free(AsyncAddressResolverInfo * i)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
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)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
avahi_dbus_msg_async_address_resolver_impl(DBusConnection * c,DBusMessage * m,void * userdata)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 }
143