EssentialsUpdate WIP

EssentialsUpdate/src/com/earth2me/essentials/update/PostToUrl.java

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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();
+	}
+}