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Support W3DM game client login #22

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Support W3DM game client login #22

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ccfbb89
Handle the BNFTP version 2 request sequence
wjlafrance Oct 9, 2026
f87ddfa
Send SID_NEWS_INFO timestamps as Unix time
wjlafrance Oct 9, 2026
36fc981
Add a script that checks BNFTP versions 1 and 2
wjlafrance Oct 9, 2026
065d9ce
Handle SID_NETGAMEPORT
wjlafrance Oct 9, 2026
c57febb
Support the name-only logon of the Warcraft III demo
wjlafrance Oct 9, 2026
b019960
Acknowledge game searches and cancels from the Warcraft III demo
wjlafrance Oct 9, 2026
6540b27
Add a terms of service file for the Warcraft III demo
wjlafrance Oct 9, 2026
ce02012
Add the Warcraft III demo's game type list and its generator
wjlafrance Oct 9, 2026
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1 change: 1 addition & 0 deletions .gitattributes
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Original file line number Diff line number Diff line change
Expand Up @@ -66,3 +66,4 @@
# systemd cannot be trusted with CRLF unit files; keep LF on every platform.
###############################################################################
etc/atlasd.service text eol=lf
src/make-matchmaking.sh text eol=lf
8 changes: 8 additions & 0 deletions etc/atlasd.sample.json
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Expand Up @@ -108,6 +108,9 @@
"mask_admins_in_broadcasts": false,
"mask_admins_in_ban_message": true,
"mask_admins_in_kick_message": true,
"name_only_logon": {
"W3DM": true
},
"required_game_key_count": {
"D2DV": 1,
"D2XP": 2,
Expand All @@ -118,6 +121,11 @@
"W3XP": 2,
"WAR3": 1
},
"server_signature": {
"modulus": "",
"private_exponent": "",
"address": ""
},
"statstring_updates": {
"D2DV": true,
"D2XP": true,
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2 changes: 2 additions & 0 deletions src/Atlasd/Battlenet/Account.cs
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Expand Up @@ -18,6 +18,7 @@ class Account
public const string IPAddressKey = "System\\IP";
public const string LastLogoffKey = "System\\Last Logoff";
public const string LastLogonKey = "System\\Last Logon";
public const string NameOnlyKey = "System\\Name Only";
public const string PasswordKey = "System\\Password Digest";
public const string PortKey = "System\\Port";
public const string ProfileAgeKey = "profile\\age";
Expand Down Expand Up @@ -73,6 +74,7 @@ private Account()
{ new AccountKeyValue(IPAddressKey, IPAddress.Any, AccountKeyValue.ReadLevel.Internal, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(LastLogoffKey, DateTime.Now, AccountKeyValue.ReadLevel.Owner, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(LastLogonKey, DateTime.Now, AccountKeyValue.ReadLevel.Owner, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(NameOnlyKey, 0, AccountKeyValue.ReadLevel.Internal, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(PortKey, 0, AccountKeyValue.ReadLevel.Internal, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(PasswordKey, new byte[0], AccountKeyValue.ReadLevel.Internal, AccountKeyValue.WriteLevel.Internal) },
{ new AccountKeyValue(ProfileAgeKey, "", AccountKeyValue.ReadLevel.Any, AccountKeyValue.WriteLevel.Owner) },
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3 changes: 2 additions & 1 deletion src/Atlasd/Battlenet/ClientState.cs
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Expand Up @@ -280,7 +280,8 @@ protected void ReceiveProtocolBNFTP(SocketAsyncEventArgs e)
lock (_receiveLock)
{
if (ReceiveBuffer.Length == 0) return;
BNFTPState.Receive(ReceiveBuffer);
var consumed = BNFTPState.Receive(ReceiveBuffer);
ReceiveBuffer = ReceiveBuffer[Math.Min(consumed, ReceiveBuffer.Length)..];
}
}

Expand Down
231 changes: 116 additions & 115 deletions src/Atlasd/Battlenet/Protocols/BNFTP/BNFTPState.cs
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Expand Up @@ -27,17 +27,48 @@ class BNFTPState
public UInt32 ClientToken = 0;
public GameKey GameKey = null;

private bool AwaitingVersion2Request = false;

public BNFTPState(ClientState client)
{
Client = client;
ServerToken = (uint)new Random().Next(0, 0x7FFFFFFF);
}

public void Receive(byte[] buffer)
public int Receive(byte[] buffer)
{
using var m = new MemoryStream(buffer);
using var r = new BinaryReader(m);

if (AwaitingVersion2Request)
{
/**
* ## VERSION 2 <-- ##
* ## Client -> Server ##
*
* (TYPE) (FIELD) (DESCRIPTION)
* UINT32 Starting position Facilitates resuming
* FILETIME Local filetime
* UINT32 Client Token
* UINT32 Key Length
* UINT32 Key's product value
* UINT32 Key's public value
* UINT32 Unknown (Always 0)
* UINT32 [5] CD key hash
* STRING Filename
*/

FileStartPosition = r.ReadUInt32();
FileTime = r.ReadUInt64();
ClientToken = r.ReadUInt32();
r.ReadBytes(16);
r.ReadBytes(20);
FileName = Encoding.UTF8.GetString(r.ReadByteString());

ServeFile();
return (int)m.Position;
}

/**
* ## VERSION 1 <-- ##
* ## Client -> Server ##
Expand Down Expand Up @@ -76,82 +107,8 @@ public void Receive(byte[] buffer)
FileTime = r.ReadUInt64();
FileName = Encoding.UTF8.GetString(r.ReadByteString());

/**
* ## VERSION 1 --> ##
* ## Server -> Client ##
*
* (TYPE) (FIELD) (DESCRIPTION)
* UINT16 Header Length Does not include the file length
* UINT16 Type
* UINT32 File size
* UINT32 Ad Banner ID 0 unless downloading an ad banner
* UINT32 Ad Banner File Extension 0 unless downloading an ad banner
* FILETIME Filetime
* STRING Filename
* VOID File data
*/

var file = new BNFTP.File(FileName);
if (file == null)
{
Client.Disconnect();
}

BinaryReader stream = null;

bool uploaded = false;
try
{
if (!file.OpenStream())
{
Client.Disconnect();
break;
}

stream = new BinaryReader(file.StreamReader.BaseStream);
stream.BaseStream.Position = Math.Min(stream.BaseStream.Length, FileStartPosition);

var fileLength = (int)(stream.BaseStream.Length - stream.BaseStream.Position);
HeaderLength = (UInt16)(25 + Encoding.UTF8.GetByteCount(FileName));
var outBuf = new byte[HeaderLength];
using var wm = new MemoryStream(outBuf);
using var w = new BinaryWriter(wm);

w.Write((UInt16)HeaderLength);
w.Write((UInt16)0); // "Type" ???
w.Write((UInt32)fileLength);
w.Write((UInt32)AdId);
w.Write((UInt32)AdFileExtension);
w.Write((UInt64)new FileInfo(file.Path).LastWriteTimeUtc.ToFileTimeUtc());
w.Write((string)FileName);

Write(outBuf);
Write(stream.ReadBytes(fileLength));

uploaded = true;
}
catch (Exception ex)
{
if (!(ex is IOException || ex is FileNotFoundException || ex is UnauthorizedAccessException || ex is PathTooLongException)) throw;

Logging.WriteLine(Logging.LogLevel.Warning, Logging.LogType.Client_BNFTP, Client.RemoteEndPoint, $"{ex.GetType().Name} error encountered for requested file [{FileName}]" + (string.IsNullOrEmpty(ex.Message) ? "" : $"; message: {ex.Message}"));
}
finally
{
if (uploaded)
{
Logging.WriteLine(Logging.LogLevel.Info, Logging.LogType.Client_BNFTP, Client.RemoteEndPoint, $"Uploaded file [{FileName}] ({file.Length} bytes)");
}

if (stream != null)
{
stream.Close();
}

Client.Disconnect();
}

break;
ServeFile();
return (int)m.Position;
}
case 0x0200:
{
Expand All @@ -164,18 +121,12 @@ public void Receive(byte[] buffer)
* UINT32 Product ID See Product Identification
* UINT32 Ad Banner ID 0 unless downloading an ad banner
* UINT32 Ad Banner File Extension 0 unless downloading an ad banner
* UINT32 File start position For resuming an incomplete download
* FILETIME Filetime
* STRING Filename
*/

PlatformId = (Platform.PlatformCode)r.ReadUInt32();
ProductId = (Product.ProductCode)r.ReadUInt32();
AdId = r.ReadUInt32();
AdFileExtension = r.ReadUInt32();
FileStartPosition = r.ReadUInt32();
FileTime = r.ReadUInt64();
FileName = Encoding.UTF8.GetString(r.ReadByteString());

/**
* ## VERSION 2 --> ##
Expand All @@ -185,47 +136,97 @@ public void Receive(byte[] buffer)
* UINT32 Server Token
*/

/**
* ## VERSION 2 <-- ##
* ## Client -> Server ##
*
* (TYPE) (FIELD) (DESCRIPTION)
* UINT32 Starting position Facilitates resuming
* FILETIME Local filetime
* UINT32 Client Token
* UINT32 Key Length
* UINT32 Key's product value
* UINT32 Key's public value
* UINT32 Unknown (Always 0)
* UINT32 [5] CD key hash
* STRING Filename
*/

/**
* ## VERSION 2 --> ##
* ## Server -> Client ##
*
* (TYPE) (FIELD) (DESCRIPTION)
* UINT16 Header Length Does not include the file length
* UINT32 File size
* UINT32 Ad Banner ID 0 unless downloading an ad banner
* UINT32 Ad Banner File Extension 0 unless downloading an ad banner
* FILETIME Filetime
* STRING Filename
* VOID File data
*/

break;
AwaitingVersion2Request = true;
Write(BitConverter.GetBytes(ServerToken));
return (int)m.Position;
}
default:
{
Logging.WriteLine(Logging.LogLevel.Warning, Logging.LogType.Client_BNFTP, $"Received unknown BNFTP protocol version [0x{ProtocolVersion:X4}]");
Client.Disconnect("Unknown BNFTP protocol version");
break;
return buffer.Length;
}
}
}

private void ServeFile()
{
/**
* ## VERSION 1 and 2 --> ##
* ## Server -> Client ##
*
* (TYPE) (FIELD) (DESCRIPTION)
* UINT16 Header Length Does not include the file length
* UINT16 Type
* UINT32 File size
* UINT32 Ad Banner ID 0 unless downloading an ad banner
* UINT32 Ad Banner File Extension 0 unless downloading an ad banner
* FILETIME Filetime
* STRING Filename
* VOID File data
*/

var file = new BNFTP.File(FileName);
if (file == null)
{
Client.Disconnect();
}

BinaryReader stream = null;

bool uploaded = false;
try
{
if (!file.OpenStream())
{
Client.Disconnect();
return;
}

stream = new BinaryReader(file.StreamReader.BaseStream);
stream.BaseStream.Position = Math.Min(stream.BaseStream.Length, FileStartPosition);

var fileLength = (int)(stream.BaseStream.Length - stream.BaseStream.Position);
HeaderLength = (UInt16)(25 + Encoding.UTF8.GetByteCount(FileName));
var outBuf = new byte[HeaderLength];
using var wm = new MemoryStream(outBuf);
using var w = new BinaryWriter(wm);

w.Write((UInt16)HeaderLength);
w.Write((UInt16)0); // "Type" ???
w.Write((UInt32)fileLength);
w.Write((UInt32)AdId);
w.Write((UInt32)AdFileExtension);
w.Write((UInt64)new FileInfo(file.Path).LastWriteTimeUtc.ToFileTimeUtc());
w.Write((string)FileName);

Write(outBuf);
Write(stream.ReadBytes(fileLength));

uploaded = true;
}
catch (Exception ex)
{
if (!(ex is IOException || ex is FileNotFoundException || ex is UnauthorizedAccessException || ex is PathTooLongException)) throw;

Logging.WriteLine(Logging.LogLevel.Warning, Logging.LogType.Client_BNFTP, Client.RemoteEndPoint, $"{ex.GetType().Name} error encountered for requested file [{FileName}]" + (string.IsNullOrEmpty(ex.Message) ? "" : $"; message: {ex.Message}"));
}
finally
{
if (uploaded)
{
Logging.WriteLine(Logging.LogLevel.Info, Logging.LogType.Client_BNFTP, Client.RemoteEndPoint, $"Uploaded file [{FileName}] ({file.Length} bytes)");
}

if (stream != null)
{
stream.Close();
}

Client.Disconnect();
}
}

public void Write(byte[] buffer)
{
Client.Send(buffer);
Expand Down
1 change: 1 addition & 0 deletions src/Atlasd/Battlenet/Protocols/Game/GameState.cs
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Expand Up @@ -56,6 +56,7 @@ public enum LogonTypes : UInt32
public UInt32 PingToken;
public UInt32 ProtocolId;
public UInt32 ServerToken;
public UInt32 GameSearchCookie;
public bool SpawnKey;
public byte[] Statstring;
public Int32 TimezoneBias;
Expand Down
3 changes: 3 additions & 0 deletions src/Atlasd/Battlenet/Protocols/Game/Message.cs
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Expand Up @@ -79,9 +79,12 @@ public static Message FromByteArray(byte id, byte[] buffer)
MessageIds.SID_QUERYREALMS2 => new SID_QUERYREALMS2(buffer),
MessageIds.SID_QUERYADURL => new SID_QUERYADURL(buffer),
MessageIds.SID_WARCRAFTGENERAL => new SID_WARCRAFTGENERAL(buffer),
MessageIds.SID_NETGAMEPORT => new SID_NETGAMEPORT(buffer),
MessageIds.SID_NEWS_INFO => new SID_NEWS_INFO(buffer),
MessageIds.SID_AUTH_INFO => new SID_AUTH_INFO(buffer),
MessageIds.SID_AUTH_CHECK => new SID_AUTH_CHECK(buffer),
MessageIds.SID_AUTH_ACCOUNTLOGON => new SID_AUTH_ACCOUNTLOGON(buffer),
MessageIds.SID_AUTH_ACCOUNTLOGONPROOF => new SID_AUTH_ACCOUNTLOGONPROOF(buffer),
MessageIds.SID_SETEMAIL => new SID_SETEMAIL(buffer),
MessageIds.SID_FRIENDSLIST => new SID_FRIENDSLIST(buffer),
MessageIds.SID_FRIENDSUPDATE => new SID_FRIENDSUPDATE(buffer),
Expand Down
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