private static void SendLocalResoures(Socket handler, string address)
{
byte[] msg_bytes = { 0x20 };
string msg_text = StatusCode200;
switch (address)
{
case "/favicon.ico":
msg_bytes = System.IO.File.ReadAllBytes(@FaviconPath);
break;
case "/style.css":
msg_text += File.ReadAllText(@CssPath);
msg_bytes = Encoding.UTF8.GetBytes(msg_text);
break;
case "/scripts.js":
msg_text += File.ReadAllText(@JsPath);
msg_bytes = Encoding.UTF8.GetBytes(msg_text);
break;
}
handler.Send(msg_bytes);
Logmsg = "File " + address + " was sent to client" + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
private static void SendAnswer(Socket handler, FileInfo[] Files, DirectoryInfo[] Dirs, string BackButton)
{
string html = StatusCode200;
string FolderList = "<h3>Folders</h3><ul style='list-style-type:circle'>";
string FilesList = "<h3>Files</h3><ul style='list-style-type:circle'>";
int i = 0;
foreach (FileInfo file in Files) // make list of files with popups
{
string PrettySize = PrettySizeClass.ToPrettySize(file.Length);
FilesList += "<li> <div class='popup' id='" + i + "' onclick='myFunction(this.id)'>" + file.Name + " <span class='popuptext' id='myPopup" + i + "'>" + PrettySize + "</span> </div> </li>";
i++;
}
foreach (DirectoryInfo dir in Dirs) // make list of folders with links
{
string url = "http://" + ServerAddress + "?adress=" + Uri.EscapeDataString(dir.FullName);
FolderList += "<li>" + "<a href='" + url + "'>" + dir.Name + "</a>" + "</li>";
}
FolderList += "</ul>";
FilesList += "</ul>";
html += HtmlParts[0] + "<body>" + GoToRoot + BackButton + FolderList + FilesList + HtmlParts[1]; //make final html
byte[] msg = Encoding.UTF8.GetBytes(html);
handler.Send(msg);
Logmsg = "Answer was sent to client" + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
private static void CloseConnection(Socket handler)
{
Logmsg = "Connection closed.";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
handler.Shutdown(SocketShutdown.Both);
handler.Close();
}
private static void CheckHtml()
{
if (HtmlParts.Length != 2)
{
Logmsg = "Exeption: Wrong html, something wrong with <body> tag" + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
throw new Exception();
}
}
private static (string, int) ParseRequest(string data)
{
Logmsg = "REQUEST: " + data + "\n\n";
Console.Write(Logmsg);
LoggingClass.Log(Logmsg);
string address = DefaultDir;
int ErrorCode = 0;
if (data.Length > 0)
{
string ParamsLine = data.Split('\n')[0];
string ParamsString = ParamsLine.Split(" ")[1];
if (ParamsString != "/") // in case "/" address = DefaultDir
{
address = ParamsString.Replace("/?adress=", "");
address = Uri.UnescapeDataString(address);
}
}
Logmsg = "ADDRESS: " + address + "\n\n";
Console.Write(Logmsg);
LoggingClass.Log(Logmsg);
return(address, ErrorCode);
}
public void StartListening()
{
try
{
IPHostEntry ipHost = Dns.GetHostEntry(Host);
IPAddress ipAddr = ipHost.AddressList[0];
IPEndPoint ipEndPoint = new IPEndPoint(ipAddr, Port);
Socket sListener = new Socket(ipAddr.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
sListener.Bind(ipEndPoint);
sListener.Listen(ClientLimit);
while (true)
{
Logmsg = "Waiting for connection at " + ipEndPoint.ToString();
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
Socket handler = sListener.Accept();
try // Now, after connection with client, we can catch errors and send answer about specific type of errors to client
{
string data = null;
byte[] bytes = new byte[BufferSize];
while (handler.Connected)
{
int bytesRec = handler.Receive(bytes);
//Enable this for debug
//Logmsg = "Reading " + bytesRec + " bytes \n\n";
//Console.WriteLine(Logmsg);
//LoggingClass.Log(Logmsg);
data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
if (Regex.IsMatch(@data, @EndOfRequestPattern) || bytesRec < 1)
{
break;
}
}
(string address, int Error) = ParseRequest(data);
BackButton = GetBackButton(address);
ErrorCode = Error;
if (address == "/favicon.ico" || address == "/style.css" || address == "/scripts.js")
{
SendLocalResoures(handler, address);
}
else
{
CheckHtml();
(FileInfo[] Files, DirectoryInfo[] Dirs) = GetFilesAndDirs(address);
SendAnswer(handler, Files, Dirs, BackButton);
}
}
catch (System.UnauthorizedAccessException ex)
{
ErrorCode = 1;
Logmsg = "Exeption: " + ex.ToString() + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
catch (System.IO.DirectoryNotFoundException ex)
{
ErrorCode = 2;
Logmsg = "Exeption: " + ex.ToString() + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
catch (Exception ex)
{
ErrorCode = 3; //there we can also just answer with 500 code.
Logmsg = "Exeption: " + ex.ToString() + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
if (ErrorCode > 0)
{
SendWarnAnswer(handler, ErrorCode, BackButton);
} //make and send html with error message to client
CloseConnection(handler);
}
}
catch (Exception ex)
{
Logmsg = "Exeption: " + ex.ToString() + "\n\n";
Console.WriteLine(Logmsg);
LoggingClass.Log(Logmsg);
}
}