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_host_name_resolver_free(AsyncHostNameResolverInfo * i)34 void avahi_dbus_async_host_name_resolver_free(AsyncHostNameResolverInfo *i) {
35 assert(i);
36
37 if (i->host_name_resolver)
38 avahi_s_host_name_resolver_free(i->host_name_resolver);
39
40 if (i->path) {
41 dbus_connection_unregister_object_path(server->bus, i->path);
42 avahi_free(i->path);
43 }
44 AVAHI_LLIST_REMOVE(AsyncHostNameResolverInfo, async_host_name_resolvers, i->client->async_host_name_resolvers, i);
45
46 assert(i->client->n_objects >= 1);
47 i->client->n_objects--;
48
49 avahi_free(i);
50 }
51
avahi_dbus_async_host_name_resolver_callback(AvahiSHostNameResolver * r,AvahiIfIndex interface,AvahiProtocol protocol,AvahiResolverEvent event,const char * host_name,const AvahiAddress * a,AvahiLookupResultFlags flags,void * userdata)52 void avahi_dbus_async_host_name_resolver_callback(AvahiSHostNameResolver *r, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *host_name, const AvahiAddress *a, AvahiLookupResultFlags flags, void* userdata) {
53 AsyncHostNameResolverInfo *i = userdata;
54 DBusMessage *reply;
55
56 assert(r);
57 assert(i);
58
59 reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, avahi_dbus_map_resolve_signal_name(event));
60
61 if (!reply) {
62 avahi_log_error("Failed allocate message");
63 return;
64 }
65
66 if (event == AVAHI_RESOLVER_FOUND) {
67 char t[AVAHI_ADDRESS_STR_MAX], *pt = t;
68 int32_t i_interface, i_protocol, i_aprotocol;
69 uint32_t u_flags;
70
71 assert(a);
72 assert(host_name);
73 avahi_address_snprint(t, sizeof(t), a);
74
75 i_interface = (int32_t) interface;
76 i_protocol = (int32_t) protocol;
77 i_aprotocol = (int32_t) a->proto;
78 u_flags = (uint32_t) flags;
79
80 dbus_message_append_args(
81 reply,
82 DBUS_TYPE_INT32, &i_interface,
83 DBUS_TYPE_INT32, &i_protocol,
84 DBUS_TYPE_STRING, &host_name,
85 DBUS_TYPE_INT32, &i_aprotocol,
86 DBUS_TYPE_STRING, &pt,
87 DBUS_TYPE_UINT32, &u_flags,
88 DBUS_TYPE_INVALID);
89 } else {
90 assert(event == AVAHI_RESOLVER_FAILURE);
91 avahi_dbus_append_server_error(reply);
92 }
93
94 dbus_message_set_destination(reply, i->client->name);
95 dbus_connection_send(server->bus, reply, NULL);
96 dbus_message_unref(reply);
97 }
98
avahi_dbus_msg_async_host_name_resolver_impl(DBusConnection * c,DBusMessage * m,void * userdata)99 DBusHandlerResult avahi_dbus_msg_async_host_name_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
100 DBusError error;
101 AsyncHostNameResolverInfo *i = userdata;
102
103 assert(c);
104 assert(m);
105 assert(i);
106
107 dbus_error_init(&error);
108
109 avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
110 dbus_message_get_interface(m),
111 dbus_message_get_path(m),
112 dbus_message_get_member(m));
113
114 /* Introspection */
115 if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
116 return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.HostNameResolver.xml");
117
118 /* Access control */
119 if (strcmp(dbus_message_get_sender(m), i->client->name))
120 return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
121
122 if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_HOST_NAME_RESOLVER, "Free")) {
123
124 if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
125 avahi_log_warn("Error parsing HostNameResolver::Free message");
126 goto fail;
127 }
128
129 avahi_dbus_async_host_name_resolver_free(i);
130 return avahi_dbus_respond_ok(c, m);
131 }
132
133 avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
134
135 fail:
136 if (dbus_error_is_set(&error))
137 dbus_error_free(&error);
138
139 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
140 }
141