mirror of
https://github.com/esiur/esiur-dart.git
synced 2025-09-30 19:13:19 +00:00
null-safety
This commit is contained in:
@@ -26,276 +26,215 @@ import 'IIPAuthPacketAction.dart';
|
||||
import 'IIPAuthPacketCommand.dart';
|
||||
import '../../Security/Authority/AuthenticationMethod.dart';
|
||||
|
||||
class IIPAuthPacket
|
||||
{
|
||||
class IIPAuthPacket {
|
||||
int command = 0;
|
||||
int action = 0;
|
||||
|
||||
int command;
|
||||
int action;
|
||||
int errorCode = 0;
|
||||
String errorMessage = "";
|
||||
|
||||
int errorCode;
|
||||
String errorMessage;
|
||||
AuthenticationMethod localMethod = AuthenticationMethod.None;
|
||||
|
||||
AuthenticationMethod localMethod;
|
||||
DC? sourceInfo;
|
||||
|
||||
DC sourceInfo;
|
||||
DC? hash;
|
||||
|
||||
DC hash;
|
||||
DC? sessionId;
|
||||
|
||||
DC sessionId;
|
||||
AuthenticationMethod remoteMethod = AuthenticationMethod.None;
|
||||
|
||||
AuthenticationMethod remoteMethod;
|
||||
String? domain;
|
||||
|
||||
String domain;
|
||||
int certificateId = 0;
|
||||
|
||||
int certificateId;
|
||||
String? localUsername;
|
||||
|
||||
String localUsername;
|
||||
String? remoteUsername;
|
||||
|
||||
String remoteUsername;
|
||||
DC? localPassword;
|
||||
|
||||
DC localPassword;
|
||||
DC? remotePassword;
|
||||
|
||||
DC remotePassword;
|
||||
DC? localToken;
|
||||
|
||||
DC localToken;
|
||||
DC? remoteToken;
|
||||
|
||||
DC remoteToken;
|
||||
DC? asymetricEncryptionKey;
|
||||
|
||||
DC asymetricEncryptionKey;
|
||||
DC? localNonce;
|
||||
|
||||
DC localNonce;
|
||||
DC? remoteNonce;
|
||||
|
||||
DC remoteNonce;
|
||||
int remoteTokenIndex = 0;
|
||||
|
||||
int remoteTokenIndex;
|
||||
int _dataLengthNeeded = 0;
|
||||
|
||||
int _dataLengthNeeded;
|
||||
bool _notEnough(int offset, int ends, int needed) {
|
||||
if (offset + needed > ends) {
|
||||
_dataLengthNeeded = needed - (ends - offset);
|
||||
return true;
|
||||
} else
|
||||
return false;
|
||||
}
|
||||
|
||||
bool _notEnough(int offset, int ends, int needed)
|
||||
{
|
||||
if (offset + needed > ends)
|
||||
{
|
||||
_dataLengthNeeded = needed - (ends - offset);
|
||||
return true;
|
||||
toString() {
|
||||
return command.toString() + " " + action.toString();
|
||||
}
|
||||
|
||||
int parse(DC data, int offset, int ends) {
|
||||
var oOffset = offset;
|
||||
|
||||
if (_notEnough(offset, ends, 1)) return -_dataLengthNeeded;
|
||||
|
||||
command = (data[offset] >> 6);
|
||||
|
||||
if (command == IIPAuthPacketCommand.Action) {
|
||||
action = (data[offset++] & 0x3f);
|
||||
|
||||
if (action == IIPAuthPacketAction.AuthenticateHash) {
|
||||
if (_notEnough(offset, ends, 32)) return -_dataLengthNeeded;
|
||||
|
||||
hash = data.clip(offset, 32);
|
||||
|
||||
//var hash = new byte[32];
|
||||
//Buffer.BlockCopy(data, (int)offset, hash, 0, 32);
|
||||
//Hash = hash;
|
||||
|
||||
offset += 32;
|
||||
} else if (action == IIPAuthPacketAction.NewConnection) {
|
||||
if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
|
||||
|
||||
var length = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, length)) return -_dataLengthNeeded;
|
||||
|
||||
sourceInfo = data.clip(offset, length);
|
||||
|
||||
//var sourceInfo = new byte[length];
|
||||
//Buffer.BlockCopy(data, (int)offset, sourceInfo, 0, length);
|
||||
//SourceInfo = sourceInfo;
|
||||
|
||||
offset += 32;
|
||||
} else if (action == IIPAuthPacketAction.ResumeConnection ||
|
||||
action == IIPAuthPacketAction.ConnectionEstablished) {
|
||||
//var sessionId = new byte[32];
|
||||
|
||||
if (_notEnough(offset, ends, 32)) return -_dataLengthNeeded;
|
||||
|
||||
sessionId = data.clip(offset, 32);
|
||||
|
||||
//Buffer.BlockCopy(data, (int)offset, sessionId, 0, 32);
|
||||
//SessionId = sessionId;
|
||||
|
||||
offset += 32;
|
||||
}
|
||||
} else if (command == IIPAuthPacketCommand.Declare) {
|
||||
remoteMethod = AuthenticationMethod.values[((data[offset] >> 4) & 0x3)];
|
||||
localMethod = AuthenticationMethod.values[((data[offset] >> 2) & 0x3)];
|
||||
var encrypt = ((data[offset++] & 0x2) == 0x2);
|
||||
|
||||
if (_notEnough(offset, ends, 1)) return -_dataLengthNeeded;
|
||||
|
||||
var domainLength = data[offset++];
|
||||
if (_notEnough(offset, ends, domainLength)) return -_dataLengthNeeded;
|
||||
|
||||
var domain = data.getString(offset, domainLength);
|
||||
|
||||
this.domain = domain;
|
||||
|
||||
offset += domainLength;
|
||||
|
||||
if (remoteMethod == AuthenticationMethod.Credentials) {
|
||||
if (localMethod == AuthenticationMethod.None) {
|
||||
if (_notEnough(offset, ends, 33)) return -_dataLengthNeeded;
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
|
||||
offset += 32;
|
||||
|
||||
var length = data[offset++];
|
||||
|
||||
if (_notEnough(offset, ends, length)) return -_dataLengthNeeded;
|
||||
|
||||
remoteUsername = data.getString(offset, length);
|
||||
|
||||
offset += length;
|
||||
}
|
||||
else
|
||||
return false;
|
||||
} else if (remoteMethod == AuthenticationMethod.Token) {
|
||||
if (localMethod == AuthenticationMethod.None) {
|
||||
if (_notEnough(offset, ends, 40)) return -_dataLengthNeeded;
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
|
||||
offset += 32;
|
||||
|
||||
remoteTokenIndex = data.getUint64(offset);
|
||||
offset += 8;
|
||||
}
|
||||
}
|
||||
|
||||
if (encrypt) {
|
||||
if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
|
||||
|
||||
var keyLength = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, keyLength)) return -_dataLengthNeeded;
|
||||
|
||||
asymetricEncryptionKey = data.clip(offset, keyLength);
|
||||
|
||||
offset += keyLength;
|
||||
}
|
||||
} else if (command == IIPAuthPacketCommand.Acknowledge) {
|
||||
remoteMethod = AuthenticationMethod.values[((data[offset] >> 4) & 0x3)];
|
||||
localMethod = AuthenticationMethod.values[((data[offset] >> 2) & 0x3)];
|
||||
var encrypt = ((data[offset++] & 0x2) == 0x2);
|
||||
|
||||
if (remoteMethod == AuthenticationMethod.None) {
|
||||
if (localMethod == AuthenticationMethod.None) {
|
||||
// do nothing
|
||||
}
|
||||
} else if (remoteMethod == AuthenticationMethod.Credentials ||
|
||||
remoteMethod == AuthenticationMethod.Token) {
|
||||
if (localMethod == AuthenticationMethod.None) {
|
||||
if (_notEnough(offset, ends, 32)) return -_dataLengthNeeded;
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
offset += 32;
|
||||
}
|
||||
}
|
||||
|
||||
if (encrypt) {
|
||||
if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
|
||||
|
||||
var keyLength = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, keyLength)) return -_dataLengthNeeded;
|
||||
|
||||
asymetricEncryptionKey = data.clip(offset, keyLength);
|
||||
|
||||
offset += keyLength;
|
||||
}
|
||||
} else if (command == IIPAuthPacketCommand.Error) {
|
||||
if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
|
||||
|
||||
offset++;
|
||||
errorCode = data[offset++];
|
||||
|
||||
var cl = data.getUint16(offset);
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, cl)) return -_dataLengthNeeded;
|
||||
|
||||
errorMessage = data.getString(offset, cl);
|
||||
offset += cl;
|
||||
}
|
||||
|
||||
toString()
|
||||
{
|
||||
return command.toString() + " " + action.toString();
|
||||
}
|
||||
|
||||
int parse(DC data, int offset, int ends)
|
||||
{
|
||||
var oOffset = offset;
|
||||
|
||||
if (_notEnough(offset, ends, 1))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
command = (data[offset] >> 6);
|
||||
|
||||
if (command == IIPAuthPacketCommand.Action)
|
||||
{
|
||||
action = (data[offset++] & 0x3f);
|
||||
|
||||
if (action == IIPAuthPacketAction.AuthenticateHash)
|
||||
{
|
||||
if (_notEnough(offset, ends, 32))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
hash = data.clip(offset, 32);
|
||||
|
||||
//var hash = new byte[32];
|
||||
//Buffer.BlockCopy(data, (int)offset, hash, 0, 32);
|
||||
//Hash = hash;
|
||||
|
||||
offset += 32;
|
||||
}
|
||||
else if (action == IIPAuthPacketAction.NewConnection)
|
||||
{
|
||||
if (_notEnough(offset, ends, 2))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
var length = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, length))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
sourceInfo = data.clip(offset, length);
|
||||
|
||||
//var sourceInfo = new byte[length];
|
||||
//Buffer.BlockCopy(data, (int)offset, sourceInfo, 0, length);
|
||||
//SourceInfo = sourceInfo;
|
||||
|
||||
offset += 32;
|
||||
}
|
||||
else if (action == IIPAuthPacketAction.ResumeConnection
|
||||
|| action == IIPAuthPacketAction.ConnectionEstablished)
|
||||
{
|
||||
//var sessionId = new byte[32];
|
||||
|
||||
if (_notEnough(offset, ends, 32))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
sessionId = data.clip(offset, 32);
|
||||
|
||||
//Buffer.BlockCopy(data, (int)offset, sessionId, 0, 32);
|
||||
//SessionId = sessionId;
|
||||
|
||||
offset += 32;
|
||||
}
|
||||
}
|
||||
else if (command == IIPAuthPacketCommand.Declare)
|
||||
{
|
||||
remoteMethod = AuthenticationMethod.values[((data[offset] >> 4) & 0x3)];
|
||||
localMethod = AuthenticationMethod.values[((data[offset] >> 2) & 0x3)];
|
||||
var encrypt = ((data[offset++] & 0x2) == 0x2);
|
||||
|
||||
|
||||
if (_notEnough(offset, ends, 1))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
var domainLength = data[offset++];
|
||||
if (_notEnough(offset, ends, domainLength))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
var domain = data.getString(offset, domainLength);
|
||||
|
||||
this.domain = domain;
|
||||
|
||||
offset += domainLength;
|
||||
|
||||
|
||||
if (remoteMethod == AuthenticationMethod.Credentials)
|
||||
{
|
||||
if (localMethod == AuthenticationMethod.None)
|
||||
{
|
||||
if (_notEnough(offset, ends, 33))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
|
||||
offset += 32;
|
||||
|
||||
var length = data[offset++];
|
||||
|
||||
if (_notEnough(offset, ends, length))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
remoteUsername = data.getString(offset, length);
|
||||
|
||||
|
||||
offset += length;
|
||||
}
|
||||
}
|
||||
else if (remoteMethod == AuthenticationMethod.Token)
|
||||
{
|
||||
if (localMethod == AuthenticationMethod.None)
|
||||
{
|
||||
if (_notEnough(offset, ends, 40))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
|
||||
offset += 32;
|
||||
|
||||
remoteTokenIndex = data.getUint64(offset);
|
||||
offset += 8;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
if (encrypt)
|
||||
{
|
||||
if (_notEnough(offset, ends, 2))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
var keyLength = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, keyLength))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
|
||||
asymetricEncryptionKey = data.clip(offset, keyLength);
|
||||
|
||||
offset += keyLength;
|
||||
}
|
||||
}
|
||||
else if (command == IIPAuthPacketCommand.Acknowledge)
|
||||
{
|
||||
remoteMethod = AuthenticationMethod.values[ ((data[offset] >> 4) & 0x3)];
|
||||
localMethod = AuthenticationMethod.values[ ((data[offset] >> 2) & 0x3)];
|
||||
var encrypt = ((data[offset++] & 0x2) == 0x2);
|
||||
|
||||
if (remoteMethod == AuthenticationMethod.None)
|
||||
{
|
||||
if (localMethod == AuthenticationMethod.None)
|
||||
{
|
||||
// do nothing
|
||||
}
|
||||
}
|
||||
else if (remoteMethod == AuthenticationMethod.Credentials
|
||||
|| remoteMethod == AuthenticationMethod.Token)
|
||||
{
|
||||
if (localMethod == AuthenticationMethod.None)
|
||||
{
|
||||
if (_notEnough(offset, ends, 32))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
remoteNonce = data.clip(offset, 32);
|
||||
offset += 32;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if (encrypt)
|
||||
{
|
||||
if (_notEnough(offset, ends, 2))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
var keyLength = data.getUint16(offset);
|
||||
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, keyLength))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
asymetricEncryptionKey = data.clip(offset, keyLength);
|
||||
|
||||
offset += keyLength;
|
||||
}
|
||||
}
|
||||
else if (command == IIPAuthPacketCommand.Error)
|
||||
{
|
||||
if (_notEnough(offset, ends, 4))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
offset++;
|
||||
errorCode = data[offset++];
|
||||
|
||||
|
||||
var cl = data.getUint16(offset);
|
||||
offset += 2;
|
||||
|
||||
if (_notEnough(offset, ends, cl))
|
||||
return -_dataLengthNeeded;
|
||||
|
||||
errorMessage = data.getString(offset, cl);
|
||||
offset += cl;
|
||||
|
||||
}
|
||||
|
||||
|
||||
return offset - oOffset;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
return offset - oOffset;
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user