#593 doc - Added HOW-TO doc

Roberto Sánchez

2014-02-25 bc372a688bf2062ba1e7e2ef2f9e69123d7873db

 src/main/java/net/curisit/securis/LicenseManager.java
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@@ -2,20 +2,30 @@
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 import java.io.File;
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 import java.io.IOException;
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+import java.io.UnsupportedEncodingException;
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+import java.nio.file.Files;
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+import java.nio.file.Paths;
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+import java.nio.file.StandardOpenOption;
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 import net.curisit.securis.beans.LicenseBean;
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 import net.curisit.securis.beans.RequestBean;
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+import net.curisit.securis.beans.SignedLicenseBean;
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 import net.curisit.securis.utils.JsonUtils;
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 import net.curisit.securis.utils.Params;
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+import net.curisit.securis.utils.SignatureHelper;
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 import org.apache.commons.io.FileUtils;
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+import org.apache.logging.log4j.LogManager;
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+import org.apache.logging.log4j.Logger;
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 /**
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- * Manage all licenses tasks, just like, validation, sync, requesting, ...
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+ * Manage all licenses tasks, just like validation, renew, requesting, ...
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  * 
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  * @author roberto <roberto.sanchez@curisit.net>
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  */
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 public class LicenseManager {
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+
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+	private static final Logger log = LogManager.getLogger(License.class);
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 	private static LicenseManager singleton = new LicenseManager();
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@@ -24,6 +34,23 @@
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 	public static LicenseManager getInstance() {
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 		return singleton;
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+	}
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+
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+	/**
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+	 * Loads a license from file
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+	 * 
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+	 * @param licFile
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+	 * @return The license bean
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+	 * @throws SeCurisException
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+	 */
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+	public LicenseBean load(File licFile) throws SeCurisException {
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+		LicenseBean licBean;
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+		try {
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+			licBean = JsonUtils.json2object(FileUtils.readFileToString(licFile), LicenseBean.class);
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+		} catch (IOException e) {
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+			throw new SeCurisException("Error getting license data from file: " + licFile, e);
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+		}
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+		return licBean;
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 	}
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 	/**
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@@ -42,17 +69,56 @@
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 	 * @throws SeCurisException
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 	 */
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 	public LicenseBean validateLicense(File licFile) throws SeCurisException {
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-		LicenseBean licBean;
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-		try {
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-			licBean = JsonUtils.json2object(FileUtils.readFileToString(licFile), LicenseBean.class);
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-		} catch (IOException e) {
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-			throw new SeCurisException("Error getting license data from file: " + licFile, e);
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-		}
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+		LicenseBean licBean = load(licFile);
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 		SignatureHelper.getInstance().validateSignature(licBean);
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 		LicenseValidator.getInstance().validateHW(licBean, Params.get(Params.KEYS.APPLICATION_CODE), Params.get(Params.KEYS.CUSTOMER_CODE));
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 		LicenseValidator.getInstance().validateLogo(licBean);
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 		return licBean;
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+	}
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+
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+	/**
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+	 * Request to server for a valid license
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+	 * 
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+	 * @return The license bean returned by the server
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+	 * @throws SeCurisException
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+	 */
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+	public LicenseBean requestLicense() throws SeCurisException {
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+		RequestBean req = ReqGenerator.getInstance().createRequest(Params.get(Params.KEYS.APPLICATION_CODE), Params.get(Params.KEYS.CUSTOMER_CODE));
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+		if (true)
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+			throw new SeCurisException("Action not implemented yet");
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+		LicenseBean lic = requestLicenseToServer(req);
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+		return lic;
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+	}
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+
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+	/**
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+	 * Generate a license file using a {@link LicenseBean}
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+	 * 
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+	 * @param license
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+	 * @param file
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+	 * @throws SeCurisException
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+	 */
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+	public void save(LicenseBean license, File file) throws SeCurisException {
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+		SignedLicenseBean signedLic = new SignedLicenseBean(license);
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+		byte[] json;
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+		try {
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+			json = JsonUtils.toJSON(signedLic, true).getBytes("utf-8");
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+			Files.write(Paths.get(file.toURI()), json, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
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+		} catch (UnsupportedEncodingException e) {
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+			log.error("Error creating json doc from license: " + license, e);
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+			throw new SeCurisException("Error creating json doc from license: " + license, e);
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+		} catch (IOException e) {
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+			log.error("Error creating license file: " + file, e);
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+			throw new SeCurisException("Error creating json doc from license: " + license, e);
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+		}
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+
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+		log.debug("License saved in {}", file);
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+
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+	}
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+
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+	private LicenseBean requestLicenseToServer(RequestBean req) {
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+		// TODO Prepare call to server sending the request bean to get a valid license
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+		return null;
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 	}
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 	/**
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 	 * @return New license bean if server creates a new one, otherwise the same current License bean will be returned
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 	 * @throws SeCurisException
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 	 */
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-	public LicenseBean sync(File licenseFile) throws SeCurisException {
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+	public LicenseBean renew(File licenseFile) throws SeCurisException {
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 		LicenseBean lic = validateLicense(licenseFile);
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 		if (true)
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 			throw new SeCurisException("Action not implemented yet");