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_service_browser_free(ServiceBrowserInfo * i)34 void avahi_dbus_service_browser_free(ServiceBrowserInfo *i) {
35 assert(i);
36
37 if (i->service_browser)
38 avahi_s_service_browser_free(i->service_browser);
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(ServiceBrowserInfo, service_browsers, i->client->service_browsers, i);
46
47 assert(i->client->n_objects >= 1);
48 i->client->n_objects--;
49
50 avahi_free(i);
51 }
52
avahi_dbus_msg_service_browser_impl(DBusConnection * c,DBusMessage * m,void * userdata)53 DBusHandlerResult avahi_dbus_msg_service_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
54 DBusError error;
55 ServiceBrowserInfo *i = userdata;
56
57 assert(c);
58 assert(m);
59 assert(i);
60
61 dbus_error_init(&error);
62
63 avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
64 dbus_message_get_interface(m),
65 dbus_message_get_path(m),
66 dbus_message_get_member(m));
67
68 /* Introspection */
69 if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
70 return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.ServiceBrowser.xml");
71
72 /* Access control */
73 if (strcmp(dbus_message_get_sender(m), i->client->name))
74 return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
75
76 if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, "Free")) {
77
78 if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
79 avahi_log_warn("Error parsing ServiceBrowser::Free message");
80 goto fail;
81 }
82
83 avahi_dbus_service_browser_free(i);
84 return avahi_dbus_respond_ok(c, m);
85
86 }
87
88 avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
89
90 fail:
91 if (dbus_error_is_set(&error))
92 dbus_error_free(&error);
93
94 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
95 }
96
avahi_dbus_service_browser_callback(AvahiSServiceBrowser * b,AvahiIfIndex interface,AvahiProtocol protocol,AvahiBrowserEvent event,const char * name,const char * type,const char * domain,AvahiLookupResultFlags flags,void * userdata)97 void avahi_dbus_service_browser_callback(AvahiSServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *name, const char *type, const char *domain, AvahiLookupResultFlags flags, void* userdata) {
98 ServiceBrowserInfo *i = userdata;
99 DBusMessage *m;
100 int32_t i_interface, i_protocol;
101 uint32_t u_flags;
102
103 assert(b);
104 assert(i);
105
106 m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_SERVICE_BROWSER, avahi_dbus_map_browse_signal_name(event));
107
108 if (!m) {
109 avahi_log_error("Failed allocate message");
110 return;
111 }
112
113 if (event == AVAHI_BROWSER_NEW) {
114 /* Patch in AVAHI_LOOKUP_RESULT_OUR_OWN */
115
116 if (avahi_dbus_is_our_own_service(i->client, interface, protocol, name, type, domain) > 0)
117 flags |= AVAHI_LOOKUP_RESULT_OUR_OWN;
118 }
119
120 i_interface = (int32_t) interface;
121 i_protocol = (int32_t) protocol;
122 u_flags = (uint32_t) flags;
123
124 if (event == AVAHI_BROWSER_NEW || event == AVAHI_BROWSER_REMOVE) {
125 assert(name);
126 assert(type);
127 assert(domain);
128
129 dbus_message_append_args(
130 m,
131 DBUS_TYPE_INT32, &i_interface,
132 DBUS_TYPE_INT32, &i_protocol,
133 DBUS_TYPE_STRING, &name,
134 DBUS_TYPE_STRING, &type,
135 DBUS_TYPE_STRING, &domain,
136 DBUS_TYPE_UINT32, &u_flags,
137 DBUS_TYPE_INVALID);
138 } else if (event == AVAHI_BROWSER_FAILURE)
139 avahi_dbus_append_server_error(m);
140
141 dbus_message_set_destination(m, i->client->name);
142 dbus_connection_send(server->bus, m, NULL);
143 dbus_message_unref(m);
144 }
145