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_service_resolver_free(AsyncServiceResolverInfo * i)34 void avahi_dbus_async_service_resolver_free(AsyncServiceResolverInfo *i) {
35 assert(i);
36
37 if (i->service_resolver)
38 avahi_s_service_resolver_free(i->service_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(AsyncServiceResolverInfo, async_service_resolvers, i->client->async_service_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_service_resolver_callback(AvahiSServiceResolver * r,AvahiIfIndex interface,AvahiProtocol protocol,AvahiResolverEvent event,const char * name,const char * type,const char * domain,const char * host_name,const AvahiAddress * a,uint16_t port,AvahiStringList * txt,AvahiLookupResultFlags flags,void * userdata)53 void avahi_dbus_async_service_resolver_callback(
54 AvahiSServiceResolver *r,
55 AvahiIfIndex interface,
56 AvahiProtocol protocol,
57 AvahiResolverEvent event,
58 const char *name,
59 const char *type,
60 const char *domain,
61 const char *host_name,
62 const AvahiAddress *a,
63 uint16_t port,
64 AvahiStringList *txt,
65 AvahiLookupResultFlags flags,
66 void* userdata) {
67
68 AsyncServiceResolverInfo *i = userdata;
69 DBusMessage *reply;
70
71 assert(r);
72 assert(i);
73
74 reply = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, avahi_dbus_map_resolve_signal_name(event));
75
76 if (!reply) {
77 avahi_log_error("Failed allocate message");
78 return;
79 }
80
81 if (event == AVAHI_RESOLVER_FOUND) {
82 char t[AVAHI_ADDRESS_STR_MAX], *pt = t;
83 int32_t i_interface, i_protocol, i_aprotocol;
84 uint32_t u_flags;
85
86 assert(host_name);
87
88 /* avahi_log_debug(__FILE__": [%s] Successfully resolved service <%s.%s.%s>", i->path, name, type, domain); */
89
90 if (a)
91 avahi_address_snprint(t, sizeof(t), a);
92 else
93 t[0] = 0;
94
95 if (!name)
96 name = "";
97
98 if (avahi_dbus_is_our_own_service(i->client, interface, protocol, name, type, domain) > 0)
99 flags |= AVAHI_LOOKUP_RESULT_OUR_OWN;
100
101 i_interface = (int32_t) interface;
102 i_protocol = (int32_t) protocol;
103 if (a)
104 i_aprotocol = (int32_t) a->proto;
105 else
106 i_aprotocol = AVAHI_PROTO_UNSPEC;
107 u_flags = (uint32_t) flags;
108
109 dbus_message_append_args(
110 reply,
111 DBUS_TYPE_INT32, &i_interface,
112 DBUS_TYPE_INT32, &i_protocol,
113 DBUS_TYPE_STRING, &name,
114 DBUS_TYPE_STRING, &type,
115 DBUS_TYPE_STRING, &domain,
116 DBUS_TYPE_STRING, &host_name,
117 DBUS_TYPE_INT32, &i_aprotocol,
118 DBUS_TYPE_STRING, &pt,
119 DBUS_TYPE_UINT16, &port,
120 DBUS_TYPE_INVALID);
121
122 avahi_dbus_append_string_list(reply, txt);
123
124 dbus_message_append_args(
125 reply,
126 DBUS_TYPE_UINT32, &u_flags,
127 DBUS_TYPE_INVALID);
128 } else {
129 assert(event == AVAHI_RESOLVER_FAILURE);
130 avahi_dbus_append_server_error(reply);
131 }
132
133 dbus_message_set_destination(reply, i->client->name);
134 dbus_connection_send(server->bus, reply, NULL);
135 dbus_message_unref(reply);
136 }
137
avahi_dbus_msg_async_service_resolver_impl(DBusConnection * c,DBusMessage * m,void * userdata)138 DBusHandlerResult avahi_dbus_msg_async_service_resolver_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
139 DBusError error;
140 AsyncServiceResolverInfo *i = userdata;
141
142 assert(c);
143 assert(m);
144 assert(i);
145
146 dbus_error_init(&error);
147
148 avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
149 dbus_message_get_interface(m),
150 dbus_message_get_path(m),
151 dbus_message_get_member(m));
152
153 /* Introspection */
154 if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
155 return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.ServiceResolver.xml");
156
157 /* Access control */
158 if (strcmp(dbus_message_get_sender(m), i->client->name))
159 return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
160
161 if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_RESOLVER, "Free")) {
162
163 if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
164 avahi_log_warn("Error parsing ServiceResolver::Free message");
165 goto fail;
166 }
167
168 avahi_dbus_async_service_resolver_free(i);
169 return avahi_dbus_respond_ok(c, m);
170 }
171
172 avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
173
174 fail:
175 if (dbus_error_is_set(&error))
176 dbus_error_free(&error);
177
178 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
179 }
180