AuthSignaturesGeneratorRequestToken.java

package com.socioboard.t_board_pro.twitterapi;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.Key;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import com.socioboard.t_board_pro.util.MainSingleTon;

public class AuthSignaturesGeneratorRequestToken {

	public final String ENCODING = "UTF-8";

	public final String VERSION_1_0 = "1.0";

	public final String FORM_ENCODED = "application/x-www-form-urlencoded";

	public final String OAUTH_CONSUMER_KEY = "oauth_consumer_key";
	public final String OAUTH_TOKEN_SECRET = "oauth_token_secret";
	public final String OAUTH_SIGNATURE_METHOD = "oauth_signature_method";
	public final String OAUTH_SIGNATURE = "oauth_signature";
	public final String OAUTH_TIMESTAMP = "oauth_timestamp";
	public final String OAUTH_NONCE = "oauth_nonce";
	public final String OAUTH_VERSION = "oauth_version";
	public final String OAUTH_CALLBACK = "oauth_callback";
	public final String OAUTH_CALLBACK_CONFIRMED = "oauth_callback_confirmed";
	public final String OAUTH_VERIFIER = "oauth_verifier";

	public final String HMAC_SHA1 = "HMAC-SHA1";

	public final String RSA_SHA1 = "RSA-SHA1";

	public String cKey, cSecret;
	public String url, method;
	public String currentTimeStamp, currentOnonce;

	public AuthSignaturesGeneratorRequestToken(String cKey, String cSecret,
			String method) {

		super();

		this.cKey = cKey;
		this.method = method;
		this.cSecret = cSecret;

	}

	public String getOauthSignature() {

		String oAuthSignature = null;

		// * * * 1 * * * *

		String GeneratedPerams = gentratedPerams();

		// * * * 2 * * * *

		String baseString = generateBaseString(GeneratedPerams);

		// * * * 3 * * * *

		String singningKey = genrateSigningKey();

		// * * * 4 * * * *

		oAuthSignature = getCalcShaHash(baseString, singningKey);

		// * * * Done * * * *

		return oAuthSignature;
	}

	String gentratedPerams() {

		String GeneratedPerams = null;

		try {

			GeneratedPerams = OAUTH_CALLBACK
					+ "="
					+ URLEncoder.encode(MainSingleTon.oauth_callbackURL,
							"ISO-8859-1") + "&" + OAUTH_CONSUMER_KEY + "="
					+ URLEncoder.encode(getcKey(), "ISO-8859-1") + "&"
					+ OAUTH_NONCE + "="
					+ URLEncoder.encode(currentOnonce, "ISO-8859-1") + "&"
					+ OAUTH_SIGNATURE_METHOD + "="
					+ URLEncoder.encode(HMAC_SHA1, "ISO-8859-1") + "&"
					+ OAUTH_TIMESTAMP + "="
					+ URLEncoder.encode(currentTimeStamp, "ISO-8859-1") + "&"
					+ OAUTH_VERSION + "="
					+ URLEncoder.encode(VERSION_1_0, "ISO-8859-1");

		} catch (UnsupportedEncodingException e) {

			e.printStackTrace();
		}

		myprint("GeneratedPerams = " + GeneratedPerams);

		return GeneratedPerams;
	}

	String generateBaseString(String peramsUrl) {

		String baseString = null;

		try {

			myprint("URLEncoder.encode(" + url + ") = "
					+ URLEncoder.encode(url, "ISO-8859-1"));

			baseString = method + "&" + URLEncoder.encode(url, "ISO-8859-1")
					+ "&" + URLEncoder.encode(peramsUrl, "ISO-8859-1");

		} catch (UnsupportedEncodingException e) {

			e.printStackTrace();
		}

		myprint("baseString = " + baseString);

		return baseString;
	}

	String genrateSigningKey() {

		String singningKey = null;

		try {

			singningKey = URLEncoder.encode(cSecret, "ISO-8859-1") + "&";

			myprint("genrateSigningKey = " + singningKey);

		} catch (UnsupportedEncodingException e) {

			e.printStackTrace();
		}

		return singningKey;
	}

	public String getcKey() {
		return cKey;
	}

	public void setcKey(String cKey) {
		this.cKey = cKey;
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {

		currentTimeStamp = calcTstamp();

		currentOnonce = calcOnonce();

		this.url = url;
	}

	public String calcTstamp() {
		return new String("" + System.currentTimeMillis() / 1000);
	}

	public String calcOnonce() {

		String oNonce = new String("" + (System.currentTimeMillis()) / 1000
				* 55);

		myprint("getOnonce = " + oNonce);

		return oNonce;
	}

	public String getCalcShaHash(String data, String key) {

		String oAuthSignature = null;

		try {

			Key signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1);

			Mac mac = Mac.getInstance(HMAC_SHA1);

			mac.init(signingKey);

			byte[] rawHmac = mac.doFinal(data.getBytes());

			// Done
			String noUrlEncoding = Base64.encodeBytes(rawHmac);

			// Dircet
			oAuthSignature = noUrlEncoding;

			// perencoded
			// oAuthSignature = URLEncoder.encode(noUrlEncoding,"ISO-8859-1");

			myprint("getCalcShaHash = " + oAuthSignature);

		} catch (Exception e) {

			e.printStackTrace();

			myprint("Exception = " + e);

		}

		return oAuthSignature;
	}

	public void myprint(Object msg) {

		// System.out.println(msg.toString());

	}

}