private bool CheckOwnerFileValidity(string username, string filename, int incCount)
{
//Database functionality
FileDB.PrimaryKey pk = new FileDB.PrimaryKey(filename, username, incCount);
if (FileDB.GetFileByKey(pk) == null)//FileDB.GetFileByKey(pk).Equals(null)
{
return(false);
}
return(true);
}
private bool CopyCommand(Socket client, string commandMessage, string username, string filename)
{
string ackMessage;
bool checkFileValid = CheckOwnerFileValidity(GetUsernameFromFilename(filename), GetOriginalFileName(filename), GetCopyIdFromFileName(filename));
string directoryFileName = GetDirectoryFilename(GetUsernameFromFilename(filename), GetOriginalFileName(filename), GetCopyIdFromFileName(filename));
bool checkFileExist = System.IO.File.Exists(directoryFileName);
if (checkFileValid && checkFileExist && username == GetUsernameFromFilename(filename))
{
ackMessage = "ACK " + commandMessage;
SendClientMessage(client, ackMessage);
try
{
FileDB.PrimaryKey originalPk = new FileDB.PrimaryKey(GetOriginalFileName(filename), username, GetCopyIdFromFileName(filename));
FileDB.PrimaryKey copyPk = new FileDB.PrimaryKey(GetOriginalFileName(filename), username);
File originalFile = FileDB.GetFileByKey(originalPk);
string originalFileName = Path.Combine(fileDirectory, originalPk.ToString());
string copyFileName = Path.Combine(fileDirectory, copyPk.ToString());
System.IO.File.Copy(originalFileName, copyFileName);
FileDB.InsertFile(copyPk, Path.Combine(fileDirectory, copyFileName), originalFile.FileAccessType);
string outMessage = "File Copy Finished";
logBox.AppendText("Server: " + outMessage + "\n");
SendClientMessage(client, outMessage);
}
catch (Exception except)
{
logBox.AppendText("Error: during file copy operation.\n");
logBox.AppendText("Connection Stopped\n");
client.Close();
return(false);
}
}
else
{
if (!checkFileValid)
{
ackMessage = "ERR " + filename + " does not exist in database!";
}
else if (!checkFileExist)
{
ackMessage = "ERR " + filename + " does not exist in directory!";
}
else
{
ackMessage = "ERR " + filename + " belonged to someone else!";
}
SendClientMessage(client, ackMessage);
logBox.AppendText("Server: " + ackMessage + "\n");
}
return(true);
}
private bool DeleteCommand(Socket client, string commandMessage, string username, string filename)
{
string ackMessage;
bool checkFileValid = CheckOwnerFileValidity(GetUsernameFromFilename(filename), GetOriginalFileName(filename), GetCopyIdFromFileName(filename));
string directoryFileName = GetDirectoryFilename(GetUsernameFromFilename(filename), GetOriginalFileName(filename), GetCopyIdFromFileName(filename));
bool checkFileExist = System.IO.File.Exists(directoryFileName);
if (checkFileValid && checkFileExist && username == GetUsernameFromFilename(filename))
{
ackMessage = "ACK " + commandMessage;
SendClientMessage(client, ackMessage);
try
{
System.IO.File.Delete(directoryFileName);
FileDB.PrimaryKey pk = new FileDB.PrimaryKey(GetOriginalFileName(filename), username, GetCopyIdFromFileName(filename));
FileDB.DeleteFile(pk);
string outMessage = "File Delete Finished";
logBox.AppendText("Server: " + outMessage + "\n");
SendClientMessage(client, outMessage);
}
catch (Exception except)
{
logBox.AppendText("Error: during file delete operation.\n");
logBox.AppendText("Connection Stopped\n");
client.Close();
return(false);
}
}
else
{
if (!checkFileValid)
{
ackMessage = "ERR " + filename + " does not exist in database!";
}
else if (!checkFileExist)
{
ackMessage = "ERR " + filename + " does not exist in directory!";
}
else
{
ackMessage = "ERR " + filename + " belonged to someone else!";
}
SendClientMessage(client, ackMessage);
logBox.AppendText("Server: " + ackMessage + "\n");
}
return(true);
}
private bool GetFileCommand(Socket client, string commandMessage, string username, string filename)
{
string ackMessage = "ACK " + commandMessage;
SendClientMessage(client, ackMessage);
List <File> fileList;
if (filename == "ME")
{
fileList = FileDB.GetFilesByOwner(username);
}
else
{
fileList = FileDB.GetFilesByAccessType();
}
try
{
int n, temp = 0;
int fileCount = fileList.Count();
for (int i = 0; i < fileCount; i++)
{
string fileDirectoryName = fileList[i].FilePath;
if (!System.IO.File.Exists(fileDirectoryName))
{
temp += 1;
}
}
n = fileCount - temp;
Byte[] fileCountBuffer = Encoding.Default.GetBytes(n.ToString());
n = client.Send(fileCountBuffer);
Byte[] clientAckBuffer = new Byte [64];
n = client.Receive(clientAckBuffer);
string clientAck = Encoding.Default.GetString(clientAckBuffer);
clientAck = clientAck.TrimEnd('\0');
string outTemp = "Client: " + clientAck + "\n";
logBox.AppendText(outTemp);
while (temp < fileCount)
{
FileInfo info = new FileInfo(fileList[temp].FilePath);
long length = info.Length;
string tempFilename = "Owner: " + fileList[temp].Owner + " | Name: " + fileList[temp].Counter + "." + fileList[temp].FileName + " | Size: " + length.ToString() + " | Time:" + fileList[temp].UploadDateTime.ToString() + " | Acces: " + fileList[temp].FileAccessType.ToString() + "\n";
Byte[] getFileBuffer = Encoding.Default.GetBytes(tempFilename);
n = client.Send(getFileBuffer);
temp += 1;
}
logBox.AppendText("Server: File List Sending Finished\n");
//Byte[] clientAckBuffer = new Byte[64];
Array.Clear(clientAckBuffer, 0, 64);
int clientAckN = client.Receive(clientAckBuffer);
string clientAckMessage = Encoding.Default.GetString(clientAckBuffer);
clientAckMessage = clientAckMessage.TrimEnd('\0');
logBox.AppendText("Client: " + clientAckMessage + "\n");
}
catch (Exception except)
{
logBox.AppendText("Error: during file list sending.\n");
logBox.AppendText("Connection Stopped \n");
client.Close();
return(false);
}
return(true);
}
private bool UploadCommand(Socket client, string commandMessage, string username, string filename)
{
bool fileUploadError = false;
string ackMessage = "ACK " + commandMessage;
SendClientMessage(client, ackMessage);
//TODO fix naming
FileDB.PrimaryKey tempPk = new FileDB.PrimaryKey(filename, username);
string directoryFileName = Path.Combine(fileDirectory, tempPk.ToString());
FileStream uploadFile = System.IO.File.Create(directoryFileName);
Byte[] uploadFileBuffer = new Byte[MAX_BUF];
Byte[] fileSizeBuffer = new Byte[64];
try
{
int temp = client.Receive(fileSizeBuffer);
}
catch
{
logBox.AppendText("ERROR: During File Upload\n");
fileUploadError = true;
uploadFile.Close();
return(false);
}
ulong fileSize = BitConverter.ToUInt64(fileSizeBuffer, 0);
ulong numBytesRead = 0;
//sendClientMessage(client, "ACK");
while (fileSize > numBytesRead)
{
try
{
int numBytes = client.Receive(uploadFileBuffer);
numBytesRead += (ulong)numBytes;
int index = Array.FindIndex(uploadFileBuffer, CheckEnd);
if (index > -1)
{
uploadFile.Write(uploadFileBuffer, 0, index);
break;
}
else
{
uploadFile.Write(uploadFileBuffer, 0, numBytes);
}
}
catch
{
logBox.AppendText("ERROR: During File Upload\n");
uploadFile.Close();
fileUploadError = false;
break;
}
}
uploadFile.Close();
if (!fileUploadError)
{
FileDB.PrimaryKey newPK = new FileDB.PrimaryKey(filename, username);
FileDB.InsertFile(newPK, Path.Combine(fileDirectory, (newPK.ToString())));
logBox.AppendText($"File {newPK.ToString()} UPLOADED\n");
string message = newPK.IncCount + "." + newPK.FileName + " UPLOADED";
SendClientMessage(client, message);
}
return(true);
}
