/*** 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)); } } }