From b89aa14c2cdf4ad39aa2c8411562959121e66ca0 Mon Sep 17 00:00:00 2001
From: rpiazzi <rpiazzi@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Tue, 30 Aug 2011 14:24:46 +0000
Subject: Bug-Fix for EMAIL/EMAILADDRESS problem in ZID documents

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@799 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../wag/egov/egiz/sig/SignatureObject.java         | 83 +++++++++++++++++++---
 1 file changed, 74 insertions(+), 9 deletions(-)

(limited to 'src/main/java/at')

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/sig/SignatureObject.java b/src/main/java/at/knowcenter/wag/egov/egiz/sig/SignatureObject.java
index 6fffa84..8855b86 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/sig/SignatureObject.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/sig/SignatureObject.java
@@ -749,15 +749,26 @@ public class SignatureObject implements Serializable
         }
         // take rdn from textual representation
         RDNValuePair rdnVP = (RDNValuePair) rdnList.get(i);
-        result.append(rdnVP.getRdn()).append("=");
-        // take value from certificate but make sure that we do not have a BER encoding
-        if (rdnVP.getValue().startsWith("#")) {
-           // BER encoding -> take value from text representation
-           result.append(rdnVP.getValue());
-        } else {
-           // no BER encoding -> take value from certificate
-           result.append(values[values.length - 1 - i].getAVA().getValueAsString());
-        }
+        // Note: Do not take RDN from extraction but from certificate
+		// (Bug-Fix for EMAIL/EMAILADDRESS problem in ZID documents)
+
+		// take value from certificate but make sure that we do not have a
+		// BER encoding
+		if (rdnVP.getValue().startsWith("#")) {
+
+			// take rdn from textual representation
+			result.append(rdnVP.getRdn()).append("=");
+			// BER encoding -> take value from text representation
+			result.append(rdnVP.getValue());
+		} else {
+			// no BER encoding -> take value from certificate
+			// also take RDN from certificate if possible				
+			String certValue = values[values.length - 1 - i].getAVA()
+					.getValueAsString();
+			String rdn = resolveRDN(nameFromCertificate, certValue, rdnVP.getRdn());
+			result.append(rdn + "=").append(certValue);
+		}
+        
      }
      String merged = result.toString();
      if (logger_.isDebugEnabled()) {
@@ -775,6 +786,60 @@ public class SignatureObject implements Serializable
      return merged;
   }
   
+  /**
+	 * This method tries to resolve the RDN corresponding to a given value from the certificate String.
+	 * As values might occur multiple times for different RDNs, an unambiguous resolving cannot be assured. 
+	 * In case of ambiguity, the RDN extracted from text is returned by default.
+	 * 
+	 * This method is a bug fix for a problem that caused the verification of ZID documents to fail as the RDN
+	 * from the extracted text ("EMAILADDRESS") was different to the RDN in the certificate ("EMAIL")
+	 *   
+	 * @param certString
+	 * 			The String obtained from the certificate
+	 * @param value
+	 * 			The RDN's value
+	 * @param extractedRDN
+	 * 			The RDN extracted from the given text
+	 * @return
+	 * 			The resolved RDN from the certificate, or the RDN from text extraction
+	 */
+	private static String resolveRDN(String certString, String value, String extractedRDN) {
+		
+		if(!certString.contains(value)) {
+			
+			// given value cannot be found in certificate string
+			return extractedRDN;
+		}
+		
+		if(certString.indexOf(value) != certString.lastIndexOf(value)) {
+			
+			// given value is ambiguous - cannot resolve RDN from certificate string
+			return extractedRDN;
+		}
+		
+		String[] parts = certString.split(",|;");
+		String val = value.trim();
+		
+		for(int i=0; i<parts.length; i++) {
+			
+			String part = parts[i].trim();
+			
+			if(part.endsWith(val)) {
+				
+				// found entry - extract RDN
+				String[] components = part.split("="); 
+				if(components.length != 2) {
+					// unexpected format - return default
+					return extractedRDN;					
+				}			
+				String rdn = components[0].trim();
+				return rdn;				
+			}			
+		}		
+		// default
+		return extractedRDN;
+	}
+  
   /**
    * @return Returns the SignationIssuer.
    */
-- 
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