Add connection info popup within Page Info on Android.

chrome/android/java/src/org/chromium/chrome/browser/CertificateViewer.java

+// 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();
+}