summaryrefslogtreecommitdiffstats
path: root/avahi-daemon/dbus-record-browser.c
blob: 0ddd7b85aeacaa5bfbbf9f98d823380031de212a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/* $Id$ */

/***
  This file is part of avahi.
 
  avahi is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2.1 of the
  License, or (at your option) any later version.
 
  avahi is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
  Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with avahi; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

#include <avahi-common/malloc.h>
#include <avahi-common/dbus.h>
#include <avahi-common/error.h>
#include <avahi-core/log.h>

#include "dbus-util.h"
#include "dbus-internal.h"

void avahi_dbus_record_browser_free(RecordBrowserInfo *i) {
    assert(i);

    if (i->record_browser)
        avahi_s_record_browser_free(i->record_browser);
    dbus_connection_unregister_object_path(server->bus, i->path);
    avahi_free(i->path);
    AVAHI_LLIST_REMOVE(RecordBrowserInfo, record_browsers, i->client->record_browsers, i);

    i->client->n_objects--;
    assert(i->client->n_objects >= 0);

    avahi_free(i);
}

DBusHandlerResult avahi_dbus_msg_record_browser_impl(DBusConnection *c, DBusMessage *m, void *userdata) {
    DBusError error;
    RecordBrowserInfo *i = userdata;

    assert(c);
    assert(m);
    assert(i);
    
    dbus_error_init(&error);

    avahi_log_debug(__FILE__": interface=%s, path=%s, member=%s",
                    dbus_message_get_interface(m),
                    dbus_message_get_path(m),
                    dbus_message_get_member(m));

    /* Introspection */
    if (dbus_message_is_method_call(m, DBUS_INTERFACE_INTROSPECTABLE, "Introspect"))
        return avahi_dbus_handle_introspect(c, m, "RecordBrowser.introspect");
    
    /* Access control */
    if (strcmp(dbus_message_get_sender(m), i->client->name)) 
        return avahi_dbus_respond_error(c, m, AVAHI_ERR_ACCESS_DENIED, NULL);
    
    if (dbus_message_is_method_call(m, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, "Free")) {

        if (!dbus_message_get_args(m, &error, DBUS_TYPE_INVALID)) {
            avahi_log_warn("Error parsing RecordBrowser::Free message");
            goto fail;
        }

        avahi_dbus_record_browser_free(i);
        return avahi_dbus_respond_ok(c, m);
        
    }
    
    avahi_log_warn("Missed message %s::%s()", dbus_message_get_interface(m), dbus_message_get_member(m));

fail:
    if (dbus_error_is_set(&error))
        dbus_error_free(&error);
    
    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

void avahi_dbus_record_browser_callback(
    AvahiSRecordBrowser *b,
    AvahiIfIndex interface,
    AvahiProtocol protocol,
    AvahiBrowserEvent event,
    AvahiRecord *record,
    AvahiLookupResultFlags flags,
    void* userdata) {
    
    RecordBrowserInfo *i = userdata;
    DBusMessage *m = NULL;
    int32_t i_interface, i_protocol;
    uint32_t u_flags;
    
    assert(b);
    assert(i);

    i_interface = (int32_t) interface;
    i_protocol = (int32_t) protocol;
    u_flags = (uint32_t) flags;

    m = dbus_message_new_signal(i->path, AVAHI_DBUS_INTERFACE_RECORD_BROWSER, avahi_dbus_map_browse_signal_name(event));

    if (event == AVAHI_BROWSER_NEW || event == AVAHI_BROWSER_REMOVE) {
        uint8_t rdata[0xFFFF];
        size_t size;
        assert(record);
        
        if (!(dbus_message_append_args(
                  m,
                  DBUS_TYPE_INT32, &i_interface,
                  DBUS_TYPE_INT32, &i_protocol,
                  DBUS_TYPE_STRING, &record->key->name,
                  DBUS_TYPE_UINT16, &record->key->clazz,
                  DBUS_TYPE_UINT16, &record->key->type,
                  DBUS_TYPE_INVALID)))
            goto fail;
            
        if ((size = avahi_rdata_serialize(record, rdata, sizeof(rdata))) == (size_t) -1 ||
            avahi_dbus_append_rdata(m, rdata, size) < 0) {
            avahi_log_debug(__FILE__": Failed to append rdata");
            dbus_message_unref(m);
            return;
        }
        
        dbus_message_append_args(
            m,
            DBUS_TYPE_UINT32, &u_flags,
            DBUS_TYPE_INVALID);
        
    } else if (event == AVAHI_BROWSER_FAILURE)
        avahi_dbus_append_server_error(m);
    
    dbus_message_set_destination(m, i->client->name);   
    dbus_connection_send(server->bus, m, NULL);
    dbus_message_unref(m);

    return;
    
fail:

    if (m)
        dbus_message_unref(m);
}