1 files changed, 83 insertions, 0 deletions
diff --git a/src/main/java/at/gv/util/client/mis/usp_v2/VDDSRoleGenerationStrategy.java b/src/main/java/at/gv/util/client/mis/usp_v2/VDDSRoleGenerationStrategy.java
new file mode 100644
index 0000000..c5573d3
--- /dev/null
+++ b/src/main/java/at/gv/util/client/mis/usp_v2/VDDSRoleGenerationStrategy.java
@@ -0,0 +1,83 @@
+package at.gv.util.client.mis.usp_v2;
+
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.text.SimpleDateFormat;
+import java.util.Base64;
+import java.util.Date;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.util.MiscUtil;
+import at.gv.util.client.szr.IRoleGenerationStrategy;
+import at.gv.util.ex.EgovUtilException;
+
+public class VDDSRoleGenerationStrategy implements IRoleGenerationStrategy {
+	private static final Logger log = LoggerFactory.getLogger(VDDSRoleGenerationStrategy.class);
+
+	public static final String ROLE_CONSTANT_PARTNERNAME = "partner-name=";
+	public static final String ROLE_CONSTANT_SECRET = "secret=";
+	public static final String ROLE_CONSTANT_CREATIONTS = "creation-ts=";
+	
+	public static final String TS_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
+	private static final SimpleDateFormat tsFormat = new SimpleDateFormat(TS_PATTERN);
+	
+	private String participant;
+	private String authData;
+	
+	public VDDSRoleGenerationStrategy(String participant, String authData) throws EgovUtilException {
+		if (MiscUtil.isEmpty(authData)) {
+			log.error("Secret to generate VDDS role is 'null or 'empty''");
+			throw new EgovUtilException("Secret to generate VDDS role is 'null or 'empty'");
+			
+		}
+		this.authData = authData;
+		
+		if (MiscUtil.isEmpty(participant)) {
+			log.error("Participant to generate VDDS role is 'null or 'empty''");
+			throw new EgovUtilException("Secret to generate VDDS role is 'null or 'empty'");
+			
+		}
+		this.participant = participant;
+				
+		log.trace("VDDSRoleGenerationStrategy uses participant: " + this.participant + " and secret: " + this.authData);
+		
+	}
+
+	@Override
+	public String generateRoleString(String roleString) throws EgovUtilException {
+		
+		 try {
+			 String currentTS = tsFormat.format(new Date());
+			 log.trace("Generate VDDS role at: " + currentTS);
+		     MessageDigest md = MessageDigest.getInstance("SHA-1");
+		     byte[] digistInput = (currentTS + authData).getBytes("UTF-8");		     
+		     log.trace("DigistInput: " + new String(digistInput, "UTF-8"));
+		     byte[] digistOutput = md.digest(digistInput);
+		     String secret = Base64.getEncoder().encodeToString(digistOutput);
+		     
+		     StringBuilder sBuilder = new StringBuilder(roleString);
+		     sBuilder.append("(");
+		     sBuilder.append(ROLE_CONSTANT_PARTNERNAME);
+		     sBuilder.append(participant);
+		     sBuilder.append(",");
+		     sBuilder.append(ROLE_CONSTANT_SECRET);
+		     sBuilder.append(secret);
+		     sBuilder.append(",");
+		     sBuilder.append(ROLE_CONSTANT_CREATIONTS);
+		     sBuilder.append(currentTS);
+		     sBuilder.append(")");
+		     
+		     log.trace("Finale VDDS Role: " + sBuilder.toString());		     
+		     return sBuilder.toString();
+		        
+		 } catch(NoSuchAlgorithmException | UnsupportedEncodingException e) {
+		     log.error("VDDSRoleGeneration FAILED with error: " + e.getMessage(), e);
+		     throw new EgovUtilException("VDDSRoleGeneration FAILED", e);
+		        
+		 } 		
+	}
+
+}