[
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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