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package com.earth2me.essentials.update;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.math.BigInteger;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.Charset;
import java.util.Map;
import java.util.Random;
public class PostToUrl
{
private final transient URL url;
private final transient String boundary;
private final transient Random random = new Random();
private final static String CRLF = "\r\n";
private final static Charset UTF8 = Charset.forName("utf-8");
public PostToUrl(final URL url)
{
this.url = url;
final byte[] bytes = new byte[32];
random.nextBytes(bytes);
this.boundary = "----------" + new BigInteger(bytes).toString(Character.MAX_RADIX) + "_$";
}
public String send(final Map<String, Object> data) throws IOException
{
final URLConnection connection = url.openConnection();
connection.setRequestProperty("content-type", "multipart/form-data; boundary=" + boundary);
final StringBuilder dataBuilder = new StringBuilder();
for (Map.Entry<String, Object> entry : data.entrySet())
{
if (entry.getValue() instanceof String)
{
dataBuilder.append("--").append(boundary).append(CRLF);
dataBuilder.append("Content-Disposition: form-data; name=\"").append(entry.getKey()).append('"').append(CRLF);
dataBuilder.append(CRLF);
dataBuilder.append(entry.getValue()).append(CRLF);
}
// TODO: Add support for file upload
}
dataBuilder.append("--").append(boundary).append("--").append(CRLF);
dataBuilder.append(CRLF);
connection.setDoOutput(true);
final byte[] message = dataBuilder.toString().getBytes(UTF8);
connection.setRequestProperty("content-length", Integer.toString(message.length));
connection.connect();
final OutputStream stream = connection.getOutputStream();
stream.write(message);
stream.close();
final BufferedReader page = new BufferedReader(new InputStreamReader(connection.getInputStream(), UTF8));
final StringBuilder input = new StringBuilder();
String line;
while ((line = page.readLine()) != null)
{
input.append(line).append("\n");
}
page.close();
return input.toString();
}
}
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