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
34void 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
52void 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
99DBusHandlerResult 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
135fail:
136    if (dbus_error_is_set(&error))
137        dbus_error_free(&error);
138
139    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
140}
141