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/***
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.
***/
using System;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
using Mono.Unix;
namespace Avahi
{
[Flags]
public enum PublishFlags {
None = 0,
Unique = 1,
NoProbe = 2,
NoAnnounce = 4,
AllowMultiple = 8,
NoReverse = 16,
NoCookie = 32,
Update = 64,
UseWideArea = 128,
UseMulticast = 256
}
public enum EntryGroupState {
Uncommited,
Registering,
Established,
Collision,
Failure
}
public class EntryGroupStateArgs : EventArgs
{
private EntryGroupState state;
public EntryGroupState State
{
get { return state; }
}
public EntryGroupStateArgs (EntryGroupState state)
{
this.state = state;
}
}
internal delegate void EntryGroupCallback (IntPtr group, EntryGroupState state, IntPtr userdata);
public delegate void EntryGroupStateHandler (object o, EntryGroupStateArgs args);
public class EntryGroup : IDisposable
{
private Client client;
private IntPtr handle;
private EntryGroupCallback cb;
[DllImport ("avahi-client")]
private static extern IntPtr avahi_entry_group_new (IntPtr client, EntryGroupCallback cb, IntPtr userdata);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_commit (IntPtr group);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_reset (IntPtr group);
[DllImport ("avahi-client")]
private static extern EntryGroupState avahi_entry_group_get_state (IntPtr group);
[DllImport ("avahi-client")]
private static extern bool avahi_entry_group_is_empty (IntPtr group);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_add_service_strlst (IntPtr group, int iface, Protocol proto,
PublishFlags flags, byte[] name, byte[] type,
byte[] domain, byte[] host, UInt16 port,
IntPtr strlst);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_update_service_strlst (IntPtr group, int iface, Protocol proto,
PublishFlags flags, byte[] name,
byte[] type, byte[] domain, IntPtr strlst);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_add_service_subtype (IntPtr group, int iface, Protocol proto,
PublishFlags flags, byte[] name, byte[] type,
byte[] domain, byte[] subtype);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_add_address (IntPtr group, int iface, Protocol proto,
PublishFlags flags, byte[] name, IntPtr address);
[DllImport ("avahi-client")]
private static extern int avahi_entry_group_add_record (IntPtr group, int iface, Protocol proto,
PublishFlags flags, byte[] name, RecordClass clazz,
RecordType type, uint ttl, byte[] rdata, int size);
[DllImport ("avahi-client")]
private static extern void avahi_entry_group_free (IntPtr group);
[DllImport ("avahi-common")]
private static extern IntPtr avahi_string_list_new (IntPtr txt);
[DllImport ("avahi-common")]
private static extern IntPtr avahi_string_list_add (IntPtr list, byte[] txt);
[DllImport ("avahi-common")]
private static extern void avahi_string_list_free (IntPtr list);
[DllImport ("avahi-common")]
private static extern IntPtr avahi_alternative_service_name (byte[] name);
public event EntryGroupStateHandler StateChanged;
public EntryGroupState State
{
get {
lock (client) {
return avahi_entry_group_get_state (handle);
}
}
}
public bool IsEmpty
{
get {
lock (client) {
return avahi_entry_group_is_empty (handle);
}
}
}
public EntryGroup (Client client)
{
this.client = client;
cb = OnEntryGroupCallback;
lock (client) {
handle = avahi_entry_group_new (client.Handle, cb, IntPtr.Zero);
if (handle == IntPtr.Zero)
client.ThrowError ();
}
}
~EntryGroup ()
{
Dispose ();
}
public void Dispose ()
{
if (client.Handle != IntPtr.Zero && handle != IntPtr.Zero) {
lock (client) {
avahi_entry_group_free (handle);
handle = IntPtr.Zero;
}
}
}
public void Commit ()
{
lock (client) {
if (avahi_entry_group_commit (handle) < 0)
client.ThrowError ();
}
}
public void Reset ()
{
lock (client) {
if (avahi_entry_group_reset (handle) < 0)
client.ThrowError ();
}
}
public void AddService (string name, string type, string domain,
UInt16 port, params string[] txt)
{
AddService (PublishFlags.None, name, type, domain, port, txt);
}
public void AddService (PublishFlags flags, string name, string type, string domain,
UInt16 port, params string[] txt)
{
AddService (-1, Protocol.Unspecified, flags, name, type, domain, null, port, txt);
}
public void AddService (int iface, Protocol proto, PublishFlags flags, string name, string type, string domain,
string host, UInt16 port, params string[] txt)
{
IntPtr list = avahi_string_list_new (IntPtr.Zero);
if (txt != null) {
foreach (string item in txt) {
list = avahi_string_list_add (list, Utility.StringToBytes (item));
}
}
AddService (iface, proto, flags, name, type, domain, host, port, list);
}
public void AddService (int iface, Protocol proto, PublishFlags flags, string name, string type, string domain,
string host, UInt16 port, params byte[][] txt)
{
IntPtr list = avahi_string_list_new (IntPtr.Zero);
if (txt != null) {
foreach (byte[] item in txt) {
list = avahi_string_list_add (list, item);
}
}
AddService (iface, proto, flags, name, type, domain, host, port, list);
}
private void AddService (int iface, Protocol proto, PublishFlags flags, string name, string type,
string domain, string host, UInt16 port, IntPtr list)
{
int ret;
lock (client) {
ret = avahi_entry_group_add_service_strlst (handle, iface, proto, flags,
Utility.StringToBytes (name),
Utility.StringToBytes (type),
Utility.StringToBytes (domain),
Utility.StringToBytes (host), port, list);
}
avahi_string_list_free (list);
if (ret < 0) {
client.ThrowError ();
}
}
public void UpdateService (string name, string type, string domain, params string[] txt)
{
UpdateService (-1, Protocol.Unspecified, PublishFlags.None, name, type, domain, txt);
}
public void UpdateService (int iface, Protocol proto, PublishFlags flags, string name, string type,
string domain, params string[] txt)
{
IntPtr list = avahi_string_list_new (IntPtr.Zero);
if (txt != null) {
foreach (string item in txt) {
list = avahi_string_list_add (list, Utility.StringToBytes (item));
}
}
UpdateService (iface, proto, flags, name, type, domain, list);
}
public void UpdateService (int iface, Protocol proto, PublishFlags flags, string name, string type,
string domain, params byte[][] txt)
{
IntPtr list = avahi_string_list_new (IntPtr.Zero);
if (txt != null) {
foreach (byte[] item in txt) {
list = avahi_string_list_add (list, item);
}
}
UpdateService (iface, proto, flags, name, type, domain, list);
}
private void UpdateService (int iface, Protocol proto, PublishFlags flags, string name, string type,
string domain, IntPtr list)
{
lock (client) {
int ret = avahi_entry_group_update_service_strlst (handle, iface, proto, flags,
Utility.StringToBytes (name),
Utility.StringToBytes (type),
Utility.StringToBytes (domain),
list);
avahi_string_list_free (list);
if (ret < 0) {
client.ThrowError ();
}
}
}
public void AddServiceSubtype (string name, string type, string domain, string subtype)
{
AddServiceSubtype (-1, Protocol.Unspecified, PublishFlags.None, name, type, domain, subtype);
}
public void AddServiceSubtype (int iface, Protocol proto, PublishFlags flags, string name,
string type, string domain, string subtype)
{
lock (client) {
int ret = avahi_entry_group_add_service_subtype (handle, iface, proto, flags,
Utility.StringToBytes (name),
Utility.StringToBytes (type),
Utility.StringToBytes (domain),
Utility.StringToBytes (subtype));
if (ret < 0) {
client.ThrowError ();
}
}
}
public void AddAddress (string name, IPAddress address)
{
AddAddress (-1, Protocol.Unspecified, PublishFlags.None, name, address);
}
public void AddAddress (int iface, Protocol proto, PublishFlags flags, string name, IPAddress address)
{
IntPtr addressPtr = Utility.AddressToPtr (address);
lock (client) {
int ret = avahi_entry_group_add_address (handle, iface, proto, flags,
Utility.StringToBytes (name), addressPtr);
Utility.Free (addressPtr);
if (ret < 0) {
client.ThrowError ();
}
}
}
public void AddRecord (string name, RecordClass clazz, RecordType type, uint ttl, byte[] rdata, int length)
{
AddRecord (-1, Protocol.Unspecified, PublishFlags.None, name, clazz, type, ttl, rdata, length);
}
public void AddRecord (int iface, Protocol proto, PublishFlags flags, string name,
RecordClass clazz, RecordType type, uint ttl, byte[] rdata, int length)
{
lock (client) {
int ret = avahi_entry_group_add_record (handle, iface, proto, flags,
Utility.StringToBytes (name),
clazz, type, ttl, rdata, length);
if (ret < 0) {
client.ThrowError ();
}
}
}
public static string GetAlternativeServiceName (string name) {
return Utility.PtrToStringFree (avahi_alternative_service_name (Utility.StringToBytes (name)));
}
private void OnEntryGroupCallback (IntPtr group, EntryGroupState state, IntPtr userdata)
{
if (StateChanged != null)
StateChanged (this, new EntryGroupStateArgs (state));
}
}
}
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