chrome/android/java/src/org/chromium/chrome/browser/CertificateViewer.java - chromium/src - Git at Google

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 package org.chromium.chrome.browser;

 import android.app.Dialog;
 import android.content.Context;
 import android.graphics.Typeface;
 import android.net.http.SslCertificate;
 import android.text.format.DateFormat;
 import android.util.Log;
 import android.view.View;
 import android.view.Window;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemSelectedListener;
 import android.widget.ArrayAdapter;
 import android.widget.LinearLayout;
 import android.widget.ScrollView;
 import android.widget.Spinner;
 import android.widget.TextView;

 import org.chromium.chrome.R;

 import java.io.ByteArrayInputStream;
 import java.security.MessageDigest;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;

 /**
  * UI component for displaying certificate information.
  */
 class CertificateViewer implements OnItemSelectedListener {
     private static final String X_509 = "X.509";
     private final Context mContext;
     private final ArrayList<LinearLayout> mViews;
     private final ArrayList<String> mTitles;
     private final int mPadding;
     private CertificateFactory mCertificateFactory;

     /**
      * Show a dialog with the provided certificate information.
      *
      * @param context The context this view should display in.
      * @param derData DER-encoded data representing a X509 certificate chain.
      */
     public static void showCertificateChain(Context context, byte[][] derData) {
         CertificateViewer viewer = new CertificateViewer(context);
         viewer.showCertificateChain(derData);
     }

     private CertificateViewer(Context context) {
         mContext = context;
         mViews = new ArrayList<LinearLayout>();
         mTitles = new ArrayList<String>();
         mPadding = (int) context.getResources().getDimension(
                 R.dimen.connection_info_padding_wide) / 2;
     }

     // Show information about an array of DER-encoded data representing a X509 certificate chain.
     // A spinner will be displayed allowing the user to select which certificate to display.
     private void showCertificateChain(byte[][] derData) {
         for (int i = 0; i < derData.length; i++) {
             addCertificate(derData[i]);
         }
         ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(mContext,
                 android.R.layout.simple_spinner_item,
                 mTitles);
         arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

         LinearLayout dialogContainer = new LinearLayout(mContext);
         dialogContainer.setOrientation(LinearLayout.VERTICAL);

         TextView title = new TextView(mContext);
         title.setText(R.string.certtitle);
         title.setTextAppearance(mContext, android.R.style.TextAppearance_Large);
         title.setTypeface(title.getTypeface(), Typeface.BOLD);
         title.setPadding(mPadding, mPadding, mPadding, mPadding / 2);
         dialogContainer.addView(title);

         Spinner spinner = new Spinner(mContext);
         spinner.setAdapter(arrayAdapter);
         spinner.setOnItemSelectedListener(this);
         spinner.setPadding(0, 0, mPadding / 2, mPadding);
         dialogContainer.addView(spinner);

         LinearLayout certContainer = new LinearLayout(mContext);
         certContainer.setOrientation(LinearLayout.VERTICAL);
         for (int i = 0; i < mViews.size(); ++i) {
             LinearLayout certificateView = mViews.get(i);
             if (i != 0) {
                 certificateView.setVisibility(LinearLayout.GONE);
             }
             certContainer.addView(certificateView);
         }
         ScrollView scrollView = new ScrollView(mContext);
         scrollView.addView(certContainer);
         dialogContainer.addView(scrollView);

         showDialogForView(dialogContainer);
     }

     // Displays a dialog with scrolling for the given view.
     private void showDialogForView(View view) {
         Dialog dialog = new Dialog(mContext);
         dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
         dialog.addContentView(view,
                 new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
                         LinearLayout.LayoutParams.MATCH_PARENT));
         dialog.show();
     }

     private void addCertificate(byte[] derData) {
         try {
             if (mCertificateFactory == null) {
                 mCertificateFactory = CertificateFactory.getInstance(X_509);
             }
             Certificate cert = mCertificateFactory.generateCertificate(
                     new ByteArrayInputStream(derData));
             addCertificateDetails(cert, getDigest(derData, "SHA-256"), getDigest(derData, "SHA-1"));
         } catch (CertificateException e) {
             Log.e("CertViewer", "Error parsing certificate" + e.toString());
         }
     }

     private void addCertificateDetails(Certificate cert, byte[] sha256Digest, byte[] sha1Digest) {
         LinearLayout certificateView = new LinearLayout(mContext);
         mViews.add(certificateView);
         certificateView.setOrientation(LinearLayout.VERTICAL);

         X509Certificate x509 = (X509Certificate) cert;
         SslCertificate sslCert = new SslCertificate(x509);

         mTitles.add(sslCert.getIssuedTo().getCName());

         addSectionTitle(certificateView, nativeGetCertIssuedToText());
         addItem(certificateView, nativeGetCertInfoCommonNameText(),
                 sslCert.getIssuedTo().getCName());
         addItem(certificateView, nativeGetCertInfoOrganizationText(),
                 sslCert.getIssuedTo().getOName());
         addItem(certificateView, nativeGetCertInfoOrganizationUnitText(),
                 sslCert.getIssuedTo().getUName());
         addItem(certificateView, nativeGetCertInfoSerialNumberText(),
                 formatBytes(x509.getSerialNumber().toByteArray(), ':'));

         addSectionTitle(certificateView, nativeGetCertIssuedByText());
         addItem(certificateView, nativeGetCertInfoCommonNameText(),
                 sslCert.getIssuedBy().getCName());
         addItem(certificateView, nativeGetCertInfoOrganizationText(),
                 sslCert.getIssuedBy().getOName());
         addItem(certificateView, nativeGetCertInfoOrganizationUnitText(),
                 sslCert.getIssuedBy().getUName());

         addSectionTitle(certificateView, nativeGetCertValidityText());
         java.text.DateFormat dateFormat = DateFormat.getDateFormat(mContext);
         addItem(certificateView, nativeGetCertIssuedOnText(),
                 dateFormat.format(sslCert.getValidNotBeforeDate()));
         addItem(certificateView, nativeGetCertExpiresOnText(),
                 dateFormat.format(sslCert.getValidNotAfterDate()));

         addSectionTitle(certificateView, nativeGetCertFingerprintsText());
         addItem(certificateView, nativeGetCertSHA256FingerprintText(),
                 formatBytes(sha256Digest, ' '));
         addItem(certificateView, nativeGetCertSHA1FingerprintText(),
                 formatBytes(sha1Digest, ' '));
     }

     private void addSectionTitle(LinearLayout certificateView, String label) {
         TextView title = addLabel(certificateView, label);
         title.setAllCaps(true);
     }

     private void addItem(LinearLayout certificateView, String label, String value) {
         if (value.isEmpty()) return;

         addLabel(certificateView, label);
         addValue(certificateView, value);
     }

     private TextView addLabel(LinearLayout certificateView, String label) {
         TextView t = new TextView(mContext);
         t.setPadding(mPadding, mPadding / 2, mPadding, 0);
         t.setText(label);
         t.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
         t.setTextColor(mContext.getResources().getColor(R.color.connection_info_popup_text));
         certificateView.addView(t);
         return t;
     }

     private void addValue(LinearLayout certificateView, String value) {
         TextView t = new TextView(mContext);
         t.setText(value);
         t.setPadding(mPadding, 0, mPadding, mPadding / 2);
         t.setTextColor(mContext.getResources().getColor(R.color.connection_info_popup_text));
         certificateView.addView(t);
     }

     private static String formatBytes(byte[] bytes, char separator) {
         StringBuilder sb = new StringBuilder();
         for (int i = 0; i < bytes.length; i++) {
             sb.append(String.format("%02X", bytes[i]));
             if (i != bytes.length - 1) {
                 sb.append(separator);
             }
         }
         return sb.toString();
     }

     private static byte[] getDigest(byte[] bytes, String algorithm) {
         try {
             MessageDigest md = MessageDigest.getInstance(algorithm);
             md.update(bytes);
             return md.digest();
         } catch (java.security.NoSuchAlgorithmException e) {
             return null;
         }
     }

     @Override
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
         for (int i = 0; i < mViews.size(); ++i) {
             mViews.get(i).setVisibility(
                     i == position ? LinearLayout.VISIBLE : LinearLayout.GONE);
         }
     }

     @Override
     public void onNothingSelected(AdapterView<?> parent) {
     }

     private static native String nativeGetCertIssuedToText();
     private static native String nativeGetCertInfoCommonNameText();
     private static native String nativeGetCertInfoOrganizationText();
     private static native String nativeGetCertInfoSerialNumberText();
     private static native String nativeGetCertInfoOrganizationUnitText();
     private static native String nativeGetCertIssuedByText();
     private static native String nativeGetCertValidityText();
     private static native String nativeGetCertIssuedOnText();
     private static native String nativeGetCertExpiresOnText();
     private static native String nativeGetCertFingerprintsText();
     private static native String nativeGetCertSHA256FingerprintText();
     private static native String nativeGetCertSHA1FingerprintText();
 }
	// Copyright 2015 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	package org.chromium.chrome.browser;

	import android.app.Dialog;
	import android.content.Context;
	import android.graphics.Typeface;
	import android.net.http.SslCertificate;
	import android.text.format.DateFormat;
	import android.util.Log;
	import android.view.View;
	import android.view.Window;
	import android.widget.AdapterView;
	import android.widget.AdapterView.OnItemSelectedListener;
	import android.widget.ArrayAdapter;
	import android.widget.LinearLayout;
	import android.widget.ScrollView;
	import android.widget.Spinner;
	import android.widget.TextView;

	import org.chromium.chrome.R;

	import java.io.ByteArrayInputStream;
	import java.security.MessageDigest;
	import java.security.cert.Certificate;
	import java.security.cert.CertificateException;
	import java.security.cert.CertificateFactory;
	import java.security.cert.X509Certificate;
	import java.util.ArrayList;

	/**
	* UI component for displaying certificate information.
	*/
	class CertificateViewer implements OnItemSelectedListener {
	private static final String X_509 = "X.509";
	private final Context mContext;
	private final ArrayList<LinearLayout> mViews;
	private final ArrayList<String> mTitles;
	private final int mPadding;
	private CertificateFactory mCertificateFactory;

	/**
	* Show a dialog with the provided certificate information.
	*
	* @param context The context this view should display in.
	* @param derData DER-encoded data representing a X509 certificate chain.
	*/
	public static void showCertificateChain(Context context, byte[][] derData) {
	CertificateViewer viewer = new CertificateViewer(context);
	viewer.showCertificateChain(derData);
	}

	private CertificateViewer(Context context) {
	mContext = context;
	mViews = new ArrayList<LinearLayout>();
	mTitles = new ArrayList<String>();
	mPadding = (int) context.getResources().getDimension(
	R.dimen.connection_info_padding_wide) / 2;
	}

	// Show information about an array of DER-encoded data representing a X509 certificate chain.
	// A spinner will be displayed allowing the user to select which certificate to display.
	private void showCertificateChain(byte[][] derData) {
	for (int i = 0; i < derData.length; i++) {
	addCertificate(derData[i]);
	}
	ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(mContext,
	android.R.layout.simple_spinner_item,
	mTitles);
	arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

	LinearLayout dialogContainer = new LinearLayout(mContext);
	dialogContainer.setOrientation(LinearLayout.VERTICAL);

	TextView title = new TextView(mContext);
	title.setText(R.string.certtitle);
	title.setTextAppearance(mContext, android.R.style.TextAppearance_Large);
	title.setTypeface(title.getTypeface(), Typeface.BOLD);
	title.setPadding(mPadding, mPadding, mPadding, mPadding / 2);
	dialogContainer.addView(title);

	Spinner spinner = new Spinner(mContext);
	spinner.setAdapter(arrayAdapter);
	spinner.setOnItemSelectedListener(this);
	spinner.setPadding(0, 0, mPadding / 2, mPadding);
	dialogContainer.addView(spinner);

	LinearLayout certContainer = new LinearLayout(mContext);
	certContainer.setOrientation(LinearLayout.VERTICAL);
	for (int i = 0; i < mViews.size(); ++i) {
	LinearLayout certificateView = mViews.get(i);
	if (i != 0) {
	certificateView.setVisibility(LinearLayout.GONE);
	}
	certContainer.addView(certificateView);
	}
	ScrollView scrollView = new ScrollView(mContext);
	scrollView.addView(certContainer);
	dialogContainer.addView(scrollView);

	showDialogForView(dialogContainer);
	}

	// Displays a dialog with scrolling for the given view.
	private void showDialogForView(View view) {
	Dialog dialog = new Dialog(mContext);
	dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
	dialog.addContentView(view,
	new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
	LinearLayout.LayoutParams.MATCH_PARENT));
	dialog.show();
	}

	private void addCertificate(byte[] derData) {
	try {
	if (mCertificateFactory == null) {
	mCertificateFactory = CertificateFactory.getInstance(X_509);
	}
	Certificate cert = mCertificateFactory.generateCertificate(
	new ByteArrayInputStream(derData));
	addCertificateDetails(cert, getDigest(derData, "SHA-256"), getDigest(derData, "SHA-1"));
	} catch (CertificateException e) {
	Log.e("CertViewer", "Error parsing certificate" + e.toString());
	}
	}

	private void addCertificateDetails(Certificate cert, byte[] sha256Digest, byte[] sha1Digest) {
	LinearLayout certificateView = new LinearLayout(mContext);
	mViews.add(certificateView);
	certificateView.setOrientation(LinearLayout.VERTICAL);

	X509Certificate x509 = (X509Certificate) cert;
	SslCertificate sslCert = new SslCertificate(x509);

	mTitles.add(sslCert.getIssuedTo().getCName());

	addSectionTitle(certificateView, nativeGetCertIssuedToText());
	addItem(certificateView, nativeGetCertInfoCommonNameText(),
	sslCert.getIssuedTo().getCName());
	addItem(certificateView, nativeGetCertInfoOrganizationText(),
	sslCert.getIssuedTo().getOName());
	addItem(certificateView, nativeGetCertInfoOrganizationUnitText(),
	sslCert.getIssuedTo().getUName());
	addItem(certificateView, nativeGetCertInfoSerialNumberText(),
	formatBytes(x509.getSerialNumber().toByteArray(), ':'));

	addSectionTitle(certificateView, nativeGetCertIssuedByText());
	addItem(certificateView, nativeGetCertInfoCommonNameText(),
	sslCert.getIssuedBy().getCName());
	addItem(certificateView, nativeGetCertInfoOrganizationText(),
	sslCert.getIssuedBy().getOName());
	addItem(certificateView, nativeGetCertInfoOrganizationUnitText(),
	sslCert.getIssuedBy().getUName());

	addSectionTitle(certificateView, nativeGetCertValidityText());
	java.text.DateFormat dateFormat = DateFormat.getDateFormat(mContext);
	addItem(certificateView, nativeGetCertIssuedOnText(),
	dateFormat.format(sslCert.getValidNotBeforeDate()));
	addItem(certificateView, nativeGetCertExpiresOnText(),
	dateFormat.format(sslCert.getValidNotAfterDate()));

	addSectionTitle(certificateView, nativeGetCertFingerprintsText());
	addItem(certificateView, nativeGetCertSHA256FingerprintText(),
	formatBytes(sha256Digest, ' '));
	addItem(certificateView, nativeGetCertSHA1FingerprintText(),
	formatBytes(sha1Digest, ' '));
	}

	private void addSectionTitle(LinearLayout certificateView, String label) {
	TextView title = addLabel(certificateView, label);
	title.setAllCaps(true);
	}

	private void addItem(LinearLayout certificateView, String label, String value) {
	if (value.isEmpty()) return;

	addLabel(certificateView, label);
	addValue(certificateView, value);
	}

	private TextView addLabel(LinearLayout certificateView, String label) {
	TextView t = new TextView(mContext);
	t.setPadding(mPadding, mPadding / 2, mPadding, 0);
	t.setText(label);
	t.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
	t.setTextColor(mContext.getResources().getColor(R.color.connection_info_popup_text));
	certificateView.addView(t);
	return t;
	}

	private void addValue(LinearLayout certificateView, String value) {
	TextView t = new TextView(mContext);
	t.setText(value);
	t.setPadding(mPadding, 0, mPadding, mPadding / 2);
	t.setTextColor(mContext.getResources().getColor(R.color.connection_info_popup_text));
	certificateView.addView(t);
	}

	private static String formatBytes(byte[] bytes, char separator) {
	StringBuilder sb = new StringBuilder();
	for (int i = 0; i < bytes.length; i++) {
	sb.append(String.format("%02X", bytes[i]));
	if (i != bytes.length - 1) {
	sb.append(separator);
	}
	}
	return sb.toString();
	}

	private static byte[] getDigest(byte[] bytes, String algorithm) {
	try {
	MessageDigest md = MessageDigest.getInstance(algorithm);
	md.update(bytes);
	return md.digest();
	} catch (java.security.NoSuchAlgorithmException e) {
	return null;
	}
	}

	@Override
	public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
	for (int i = 0; i < mViews.size(); ++i) {
	mViews.get(i).setVisibility(
	i == position ? LinearLayout.VISIBLE : LinearLayout.GONE);
	}
	}

	@Override
	public void onNothingSelected(AdapterView<?> parent) {
	}

	private static native String nativeGetCertIssuedToText();
	private static native String nativeGetCertInfoCommonNameText();
	private static native String nativeGetCertInfoOrganizationText();
	private static native String nativeGetCertInfoSerialNumberText();
	private static native String nativeGetCertInfoOrganizationUnitText();
	private static native String nativeGetCertIssuedByText();
	private static native String nativeGetCertValidityText();
	private static native String nativeGetCertIssuedOnText();
	private static native String nativeGetCertExpiresOnText();
	private static native String nativeGetCertFingerprintsText();
	private static native String nativeGetCertSHA256FingerprintText();
	private static native String nativeGetCertSHA1FingerprintText();
	}