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From "Sebb (Closed) (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (COMMONSSITE-70) org.apache.harmony.security.asn1 throwing null pointer exception
Date Thu, 22 Mar 2012 09:46:22 GMT

     [ https://issues.apache.org/jira/browse/COMMONSSITE-70?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebb closed COMMONSSITE-70.
---------------------------

    
> org.apache.harmony.security.asn1 throwing null pointer exception
> ----------------------------------------------------------------
>
>                 Key: COMMONSSITE-70
>                 URL: https://issues.apache.org/jira/browse/COMMONSSITE-70
>             Project: Commons All
>          Issue Type: Bug
>          Components: Commons Build
>    Affects Versions: 19
>         Environment: Android application development.
>            Reporter: Srijan Basu
>              Labels: mentor
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> I am trying to parse a .cer certificate issued by Thwate(find it attacthed).I am getting
a null pointer exception while parsing the certificate.But I am able to parse other .cer certificates
without any problem.
> package com.ams;
> import android.app.Activity;
> import android.os.Bundle;
> import android.util.Log;
> import com.ams.certparser.CertificateParserUtil;
> public class CertificateParserTestActivity extends Activity {
> 	/** Called when the activity is first created. */
> 	private static String TAG = "CertificateParserTestActivity";
> 	@Override
> 	public void onCreate(Bundle savedInstanceState) {
> 		super.onCreate(savedInstanceState);
> 		setContentView(R.layout.main);
> 		CertificateParserUtil certParserUtil = new CertificateParserUtil(
> 				"sdcard/Thwate.cer","null");
> 		certParserUtil.parse(); 
> 	//	Log.i(TAG, "Type:" + certParserUtil.getCertType());
> 		Log.i(TAG, "Version:" + certParserUtil.getVersion());
> 		Log.i(TAG, "Basic Constraint Extensions:" + certParserUtil.getBasicConstraints());
> 		Log.i(TAG, "IssuerUniqueID:" + certParserUtil.getIssuerUniqueID());
> 		Log.i(TAG, "IssuerName:" + certParserUtil.getIssuerX500Principal());
> 		Log.i(TAG, "Public Key:"+ certParserUtil.getPublicKey());
> 		Log.i(TAG, "Issuer DN:" + certParserUtil.getIssuerDN());
> 		Log.i(TAG, "Subject:" + certParserUtil.getSubjectDN());
> 		Log.i(TAG, "Valid From:" + certParserUtil.getValidFrom());
> 		Log.i(TAG, "Valid Till:" + certParserUtil.getValidTill());
> 		Log.i(TAG, "Public Key:" + certParserUtil.getPublicKey().getAlgorithm());
> 		Log.i(TAG, "Serial Number:" + certParserUtil.getSerialNumber());
> 		Log.i(TAG, "Key:" + certParserUtil.getKeyUsage());
> 		Log.i(TAG, "Signature:" + certParserUtil.getSignature());
> 		Log.i(TAG, "SignSlgoName:" + certParserUtil.getSigAlgName());
> 		
> 			//Log.i(TAG, "Signature:" + certParserUtil.getTBSCertificate());
> 	}
> }
> package com.ams.certparser;
> import java.io.BufferedInputStream;
> import java.io.File;
> import java.io.FileInputStream;
> import java.io.FileNotFoundException;
> import java.io.IOException;
> import java.math.BigInteger;
> import java.security.KeyStore;
> import java.security.KeyStoreException;
> import java.security.NoSuchAlgorithmException;
> import java.security.Principal;
> import java.security.PublicKey;
> import java.security.cert.CertificateEncodingException;
> import java.security.cert.CertificateException;
> import java.security.cert.CertificateFactory;
> import java.security.cert.X509Certificate;
> import java.util.Date;
> import java.util.Enumeration;
> import javax.security.auth.x500.X500Principal;
> import android.os.Environment;
>  
> import android.util.Log;
> public class CertificateParserUtil {
> 	private static final String TAG = "CertificateParserUtil";
> 	public static final String PFX = "PFX";
> 	public static final String CER = "CER";
> 	FileInputStream fin = null;
> 	private String filePath;
> 	private String password;
> 	X509Certificate cert;
> 	public CertificateParserUtil(String filePath, String password) {
> 		this.filePath = filePath;
> 		this.password = password;
> 	}
> 	private String getExtension() {
> 		String ext = "";
> 		int mid = filePath.lastIndexOf(".");
> 		ext = filePath.substring(mid + 1, filePath.length());
> 		return ext;
> 	}
> 	public void parse() {
> 		String ext = getExtension();
> 		File file = new File(filePath);
> 		if (PFX.equalsIgnoreCase(ext)) {
> 			
> 			KeyStore ks = null;
> 			try {
> 				ks = KeyStore.getInstance("PKCS12");
> 				 
> 				//fin = new FileInputStream(file);
> 				ks.load(fin, password.toCharArray());
> 				Enumeration<String> aliasesEnum = null;
> 				aliasesEnum = ks.aliases();
> 				while (aliasesEnum.hasMoreElements()) {
> 					String alias = (String) aliasesEnum.nextElement();
> 					cert = (X509Certificate) ks.getCertificate(alias);
> 				}
> 			} catch (KeyStoreException e) {
>  		      Log.i(TAG, "KeyStoreException:" + e.getMessage());
> 			} catch (FileNotFoundException e) {
>               Log.i(TAG, "FileNOTFoundException:" + e.getMessage());
> 			} catch (CertificateException e) {
> 				Log.i(TAG, "CertificateException:" + e.getMessage());
> 			} catch (IOException e) {
> 				Log.i(TAG, "IOException:" + e.getMessage());
> 			} catch (NoSuchAlgorithmException e) {
> 				Log.i(TAG, "AlgorithmException:" + e.getMessage());
> 			} catch (Exception e) {
> 				Log.i(TAG, "Exception:" + e.getMessage());
> 			}
> 		} else if (CER.equalsIgnoreCase(ext)) {
> 			try {
> 				fin = new FileInputStream(file);
> 				BufferedInputStream bf = new BufferedInputStream(fin);
> 				CertificateFactory cf = null;
> 				cf = CertificateFactory.getInstance("X.509");
> 				while (bf.available() > 0) {
> 					cert = (X509Certificate) cf.generateCertificate(bf);
> 				}
> 			} catch (FileNotFoundException e) {
> 				Log.i(TAG, "FileNOTFoundException:" + e.getMessage());
> 			} catch (CertificateException e) {
> 				Log.i(TAG, "CertificateException:" + e.getMessage());
> 			} catch (IOException e) {
> 				Log.i(TAG, "IOException:" + e.getMessage());
> 			} catch (Exception e) {
> 				Log.i(TAG, "Exception:" + e.getMessage());
> 			}
> 		}
> 	}
> 	
>  
> 	public String getCertType() {
> 		return cert.getType();
> 	}
> 	public int getVersion() {
> 		return cert.getVersion();
> 	}
> 	public int getBasicConstraints() {
> 		return cert.getBasicConstraints();
> 	}
> 	public boolean[] getIssuerUniqueID() {
> 		return cert.getIssuerUniqueID();
> 	}
> 	public X500Principal getIssuerX500Principal() {
> 		return cert.getIssuerX500Principal();
> 	}
> 	public PublicKey getPublicKey() {
> 		return cert.getPublicKey();
> 	}
> 	public Principal getIssuerDN() {
> 		return cert.getIssuerDN();
> 	}
> 	public Principal getSubjectDN() {
> 		return cert.getSubjectDN();
> 	}
> 	public Date getValidFrom() {
> 		return cert.getNotBefore();
> 	}
> 	public Date getValidTill() {
> 		return cert.getNotAfter();
> 	}
> 	public String getAlgorithm() {
> 		return cert.getPublicKey().getAlgorithm();
> 	}
> 	public BigInteger getSerialNumber() {
> 		return cert.getSerialNumber();
> 	}
> 	public boolean[] getKeyUsage() {
> 		return cert.getKeyUsage();
> 	}
> 	public byte[] getSignature() {
> 		return cert.getSignature();
> 	}
> 	public String getSigAlgName() {
> 		return cert.getSigAlgName();
> 	}
> }
> CertificateException:org.apache.harmony.security.asn1.ASN1Exception: ASN.1 Sequence:
mandatory value is missing at [4].
> The folllowing is the stacktrace for your refrence.
> 03-22 12:16:30.667: W/dalvikvm(1749): threadid=1: thread exiting with uncaught exception
(group=0x409c01f8)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): FATAL EXCEPTION: main
> 03-22 12:16:30.717: E/AndroidRuntime(1749): java.lang.RuntimeException: Unable to start
activity ComponentInfo{com.ams/com.ams.CertificateParserTestActivity}: java.lang.NullPointerException
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread.access$600(ActivityThread.java:123)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.os.Handler.dispatchMessage(Handler.java:99)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.os.Looper.loop(Looper.java:137)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread.main(ActivityThread.java:4424)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at java.lang.reflect.Method.invokeNative(Native
Method)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at java.lang.reflect.Method.invoke(Method.java:511)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at dalvik.system.NativeStart.main(Native
Method)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): Caused by: java.lang.NullPointerException
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at com.ams.certparser.CertificateParserUtil.getVersion(CertificateParserUtil.java:115)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at com.ams.CertificateParserTestActivity.onCreate(CertificateParserTestActivity.java:23)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.Activity.performCreate(Activity.java:4465)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
> 03-22 12:16:30.717: E/AndroidRuntime(1749): 	... 11 more

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