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_record_browser_free(RecordBrowserInfo * i)34 void avahi_dbus_record_browser_free(RecordBrowserInfo *i) {
35 assert(i);
36
37 if (i->record_browser)
38 avahi_s_record_browser_free(i->record_browser);
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(RecordBrowserInfo, record_browsers, i->client->record_browsers, i);
45
46 assert(i->client->n_objects >= 1);
47 i->client->n_objects--;
48
49 avahi_free(i);
50 }
51
avahi_dbus_msg_record_browser_impl(DBusConnection * c,DBusMessage * m,void * userdata)52 DBusHandlerResult avahi_dbus_msg_record_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
53 DBusError error;
54 RecordBrowserInfo *i = userdata;
55
56 assert(c);
57 assert(m);
58 assert(i);
59
60 dbus_error_init(&error);
61
62 avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
63 dbus_message_get_interface(m),
64 dbus_message_get_path(m),
65 dbus_message_get_member(m));
66
67 /* Introspection */
68 if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
69 return avahi_dbus_handle_introspect(c, m, "org.freedesktop.Avahi.RecordBrowser.xml");
70
71 /* Access control */
72 if (strcmp(dbus_message_get_sender(m), i->client->name))
73 return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
74
75 if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Free")) {
76
77 if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
78 avahi_log_warn("Error parsing RecordBrowser::Free message");
79 goto fail;
80 }
81
82 avahi_dbus_record_browser_free(i);
83 return avahi_dbus_respond_ok(c, m);
84
85 }
86
87 avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));
88
89 fail:
90 if (dbus_error_is_set(&error))
91 dbus_error_free(&error);
92
93 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
94 }
95
avahi_dbus_record_browser_callback(AvahiSRecordBrowser * b,AvahiIfIndex interface,AvahiProtocol protocol,AvahiBrowserEvent event,AvahiRecord * record,AvahiLookupResultFlags flags,void * userdata)96 void avahi_dbus_record_browser_callback(
97 AvahiSRecordBrowser *b,
98 AvahiIfIndex interface,
99 AvahiProtocol protocol,
100 AvahiBrowserEvent event,
101 AvahiRecord *record,
102 AvahiLookupResultFlags flags,
103 void* userdata) {
104
105 RecordBrowserInfo *i = userdata;
106 DBusMessage *m = NULL;
107 int32_t i_interface, i_protocol;
108 uint32_t u_flags;
109
110 assert(b);
111 assert(i);
112
113 i_interface = (int32_t) interface;
114 i_protocol = (int32_t) protocol;
115 u_flags = (uint32_t) flags;
116
117 m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, avahi_dbus_map_browse_signal_name(event));
118
119 if (!m) {
120 avahi_log_error("Failed allocate message");
121 return;
122 }
123
124 if (event == AVAHI_BROWSER_NEW || event == AVAHI_BROWSER_REMOVE) {
125 uint8_t rdata[0xFFFF];
126 size_t size;
127 assert(record);
128
129 if (!(dbus_message_append_args(
130 m,
131 DBUS_TYPE_INT32, &i_interface,
132 DBUS_TYPE_INT32, &i_protocol,
133 DBUS_TYPE_STRING, &record->key->name,
134 DBUS_TYPE_UINT16, &record->key->clazz,
135 DBUS_TYPE_UINT16, &record->key->type,
136 DBUS_TYPE_INVALID)))
137 goto fail;
138
139 if ((size = avahi_rdata_serialize(record, rdata, sizeof(rdata))) == (size_t) -1 ||
140 avahi_dbus_append_rdata(m, rdata, size) < 0) {
141 avahi_log_debug(__FILE__": Failed to append rdata");
142 dbus_message_unref(m);
143 return;
144 }
145
146 dbus_message_append_args(
147 m,
148 DBUS_TYPE_UINT32, &u_flags,
149 DBUS_TYPE_INVALID);
150
151 } else if (event == AVAHI_BROWSER_FAILURE)
152 avahi_dbus_append_server_error(m);
153
154 dbus_message_set_destination(m, i->client->name);
155 dbus_connection_send(server->bus, m, NULL);
156 dbus_message_unref(m);
157
158 return;
159
160 fail:
161
162 if (m)
163 dbus_message_unref(m);
164 }
165