/// <summary>
/// This method permit to get back the real ip behind a proxy and check the list of banned IP.
/// </summary>
private bool GetAndCheckForwardedIp(string packet)
{
var splitPacket = packet.Split(new[] { "\n" }, StringSplitOptions.None);
foreach (var packetEach in splitPacket)
{
if (packetEach != null)
{
if (!string.IsNullOrEmpty(packetEach))
{
if (packetEach.ToLower().Contains("x-forwarded-for: "))
{
string newIp = packetEach.ToLower().Replace("x-forwarded-for: ", "");
_ip = newIp;
ClassLog.Log("HTTP/HTTPS API - X-Forwarded-For ip of the client is: " + newIp, 7, 2);
var checkBanResult = ClassApiBan.FilterCheckIp(_ip);
if (!checkBanResult) // Is Banned
{
return(false);
}
else
{
if (!string.IsNullOrEmpty(newIp))
{
ClassApiBan.FilterInsertIp(newIp);
}
return(true);
}
}
}
}
}
return(true);
}
/// <summary>
/// Handle get request received from client.
/// </summary>
/// <param name="packet"></param>
/// <returns></returns>
private async Task HandlePacketHttpAsync(string packet)
{
long selectedIndex = 0;
string selectedHash = string.Empty;
if (packet.Contains("="))
{
var splitPacket = packet.Split(new[] { "=" }, StringSplitOptions.None);
if (!long.TryParse(splitPacket[1], out selectedIndex))
{
selectedHash = splitPacket[1]; // Hash
}
packet = splitPacket[0];
}
switch (packet)
{
case ClassApiHttpRequestEnumeration.GetCoinName:
await BuildAndSendHttpPacketAsync(ClassConnectorSetting.CoinName);
break;
case ClassApiHttpRequestEnumeration.GetCoinMinName:
await BuildAndSendHttpPacketAsync(ClassConnectorSetting.CoinNameMin);
break;
case ClassApiHttpRequestEnumeration.GetCoinMaxSupply:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CoinMaxSupply);
break;
case ClassApiHttpRequestEnumeration.GetCoinCirculating:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CoinCirculating);
break;
case ClassApiHttpRequestEnumeration.GetCoinTotalFee:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CurrentTotalFee);
break;
case ClassApiHttpRequestEnumeration.GetCoinTotalMined:
await BuildAndSendHttpPacketAsync("" + (ClassRemoteNodeSync.ListOfBlock.Count * 10));
break;
case ClassApiHttpRequestEnumeration.GetCoinBlockchainHeight:
await BuildAndSendHttpPacketAsync("" + (ClassRemoteNodeSync.ListOfBlock.Count + 1));
break;
case ClassApiHttpRequestEnumeration.GetCoinTotalBlockMined:
await BuildAndSendHttpPacketAsync("" + (ClassRemoteNodeSync.ListOfBlock.Count));
break;
case ClassApiHttpRequestEnumeration.GetCoinTotalBlockLeft:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CurrentBlockLeft);
break;
case ClassApiHttpRequestEnumeration.GetCoinNetworkDifficulty:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CurrentDifficulty);
break;
case ClassApiHttpRequestEnumeration.GetCoinNetworkHashrate:
await BuildAndSendHttpPacketAsync(ClassRemoteNodeSync.CurrentHashrate);
break;
case ClassApiHttpRequestEnumeration.GetCoinBlockPerId:
if (selectedIndex > 0)
{
selectedIndex -= 1;
if (ClassRemoteNodeSync.ListOfBlock.Count - 1 >= selectedIndex)
{
if (ClassRemoteNodeSync.ListOfBlock.ContainsKey((int)selectedIndex))
{
var splitBlock = ClassRemoteNodeSync.ListOfBlock[(int)selectedIndex].Split(new[] { "#" }, StringSplitOptions.None);
Dictionary <string, string> blockContent = new Dictionary <string, string>
{
{ "block_id", splitBlock[0] },
{ "block_hash", splitBlock[1] },
{ "block_transaction_hash", splitBlock[2] },
{ "block_timestamp_create", splitBlock[3] },
{ "block_timestamp_found", splitBlock[4] },
{ "block_difficulty", splitBlock[5] },
{ "block_reward", splitBlock[6] }
};
await BuildAndSendHttpPacketAsync(null, true, blockContent);
blockContent.Clear();
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
break;
case ClassApiHttpRequestEnumeration.GetCoinBlockPerHash:
if (selectedHash != string.Empty)
{
int selectedBlockIndex = ClassRemoteNodeSync.ListOfBlockHash.GetBlockIdFromHash(selectedHash);
if (selectedBlockIndex != -1)
{
var splitBlock = ClassRemoteNodeSync.ListOfBlock[selectedBlockIndex].Split(new[] { "#" }, StringSplitOptions.None);
Dictionary <string, string> blockContent = new Dictionary <string, string>
{
{ "block_id", splitBlock[0] },
{ "block_hash", splitBlock[1] },
{ "block_transaction_hash", splitBlock[2] },
{ "block_timestamp_create", splitBlock[3] },
{ "block_timestamp_found", splitBlock[4] },
{ "block_difficulty", splitBlock[5] },
{ "block_reward", splitBlock[6] }
};
await BuildAndSendHttpPacketAsync(null, true, blockContent);
blockContent.Clear();
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
break;
case ClassApiHttpRequestEnumeration.GetCoinTransactionPerId:
if (selectedIndex > 0)
{
selectedIndex -= 1;
if (ClassRemoteNodeSync.ListOfTransaction.Count - 1 >= selectedIndex)
{
if (ClassRemoteNodeSync.ListOfTransaction.ContainsKey(selectedIndex))
{
var splitTransaction = ClassRemoteNodeSync.ListOfTransaction.GetTransaction(selectedIndex).Split(new[] { "-" }, StringSplitOptions.None);
Dictionary <string, string> transactionContent = new Dictionary <string, string>
{
{ "transaction_id", "" + (selectedIndex + 1) },
{ "transaction_id_sender", splitTransaction[0] },
{ "transaction_fake_amount", splitTransaction[1] },
{ "transaction_fake_fee", splitTransaction[2] },
{ "transaction_id_receiver", splitTransaction[3] },
{ "transaction_timestamp_sended", splitTransaction[4] },
{ "transaction_hash", splitTransaction[5] },
{ "transaction_timestamp_received", splitTransaction[6] }
};
await BuildAndSendHttpPacketAsync(null, true, transactionContent);
transactionContent.Clear();
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
break;
case ClassApiHttpRequestEnumeration.GetCoinTransactionPerHash:
if (selectedHash != string.Empty)
{
long transactionIndex = ClassRemoteNodeSync.ListOfTransactionHash.ContainsKey(selectedHash);
if (transactionIndex != -1)
{
var splitTransaction = ClassRemoteNodeSync.ListOfTransaction.GetTransaction(transactionIndex).Split(new[] { "-" }, StringSplitOptions.None);
Dictionary <string, string> transactionContent = new Dictionary <string, string>
{
{ "transaction_id", "" + (transactionIndex + 1) },
{ "transaction_id_sender", splitTransaction[0] },
{ "transaction_fake_amount", splitTransaction[1] },
{ "transaction_fake_fee", splitTransaction[2] },
{ "transaction_id_receiver", splitTransaction[3] },
{ "transaction_timestamp_sended", splitTransaction[4] },
{ "transaction_hash", splitTransaction[5] },
{ "transaction_timestamp_received", splitTransaction[6] }
};
await BuildAndSendHttpPacketAsync(null, true, transactionContent);
transactionContent.Clear();
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
}
else
{
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
}
break;
case ClassApiHttpRequestEnumeration.GetCoinNetworkFullStats:
Dictionary <string, string> networkStatsContent = new Dictionary <string, string>
{
{ "coin_name", ClassConnectorSetting.CoinName },
{ "coin_min_name", ClassConnectorSetting.CoinNameMin },
{ "coin_max_supply", ClassRemoteNodeSync.CoinMaxSupply },
{ "coin_circulating", decimal.Parse(ClassRemoteNodeSync.CoinCirculating, NumberStyles.Any, Program.GlobalCultureInfo).ToString() },
{ "coin_total_fee", decimal.Parse(ClassRemoteNodeSync.CurrentTotalFee, NumberStyles.Any, Program.GlobalCultureInfo).ToString() },
{ "coin_total_mined", (ClassRemoteNodeSync.ListOfBlock.Count * ClassConnectorSetting.ConstantBlockReward).ToString() },
{ "coin_blockchain_height", "" + (ClassRemoteNodeSync.ListOfBlock.Count + 1) },
{ "coin_total_block_mined", "" + ClassRemoteNodeSync.ListOfBlock.Count },
{ "coin_total_block_left", ClassRemoteNodeSync.CurrentBlockLeft },
{ "coin_network_difficulty", decimal.Parse(ClassRemoteNodeSync.CurrentDifficulty, NumberStyles.Any, Program.GlobalCultureInfo).ToString() },
{ "coin_network_hashrate", decimal.Parse(ClassRemoteNodeSync.CurrentHashrate, NumberStyles.Any, Program.GlobalCultureInfo).ToString() },
{ "coin_total_transaction", "" + ClassRemoteNodeSync.ListOfTransaction.Count }
};
await BuildAndSendHttpPacketAsync(null, true, networkStatsContent);
networkStatsContent.Clear();
break;
case ClassApiHttpRequestEnumeration.PacketFavicon:
ClassLog.Log("HTTP API - packet received from IP: " + _ip + " - favicon request detected and ignored.", 6, 2);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
break;
default:
ClassApiBan.FilterInsertInvalidPacket(_ip);
await BuildAndSendHttpPacketAsync(ClassApiHttpRequestEnumeration.PacketNotExist);
break;
}
}
/// <summary>
/// Start to listen incoming client.
/// </summary>
/// <returns></returns>
public async Task StartHandleClientHttpAsync()
{
try
{
_ip = ((IPEndPoint)(_client.Client.RemoteEndPoint)).Address.ToString();
}
catch
{
CloseClientConnection();
return;
}
var checkBanResult = true;
if (_ip != "127.0.0.1") // Do not check localhost ip.
{
checkBanResult = ClassApiBan.FilterCheckIp(_ip);
}
int totalWhile = 0;
if (checkBanResult)
{
if (_ip != "127.0.0.1")
{
ClassApiBan.FilterInsertIp(_ip);
}
try
{
while (_clientStatus)
{
try
{
byte[] buffer = new byte[ClassConnectorSetting.MaxNetworkPacketSize];
using (NetworkStream clientHttpReader = new NetworkStream(_client.Client))
{
using (var bufferedStreamNetwork = new BufferedStream(clientHttpReader, ClassConnectorSetting.MaxNetworkPacketSize))
{
int received = await bufferedStreamNetwork.ReadAsync(buffer, 0, buffer.Length);
if (received > 0)
{
string packet = Encoding.UTF8.GetString(buffer, 0, received);
try
{
if (!GetAndCheckForwardedIp(packet))
{
break;
}
}
catch
{
}
packet = ClassUtilsNode.GetStringBetween(packet, "GET", "HTTP");
packet = packet.Replace("/", "");
packet = packet.Replace(" ", "");
ClassLog.Log("HTTP API - packet received from IP: " + _ip + " - " + packet, 6, 2);
await HandlePacketHttpAsync(packet);
break;
}
else
{
totalWhile++;
}
if (totalWhile >= 8)
{
break;
}
}
}
}
catch
{
break;
}
}
}
catch
{
}
CloseClientConnection();
}
}
