package com.stoutner.privacybrowser.fragments;
+import android.annotation.SuppressLint;
+import android.content.pm.PackageManager;
+import android.content.pm.Signature;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import com.stoutner.privacybrowser.BuildConfig;
import com.stoutner.privacybrowser.R;
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.math.BigInteger;
+import java.security.Principal;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.text.DateFormat;
+import java.util.Date;
+
public class AboutTabFragment extends Fragment {
private int tabNumber;
TextView versionBuildTextView = (TextView) tabLayout.findViewById(R.id.about_version_build);
TextView versionSecurityPatchTextView = (TextView) tabLayout.findViewById(R.id.about_version_securitypatch);
TextView versionWebKitTextView = (TextView) tabLayout.findViewById(R.id.about_version_webkit);
- TextView versionChromeText = (TextView) tabLayout.findViewById(R.id.about_version_chrome);
+ TextView versionChromeTextView = (TextView) tabLayout.findViewById(R.id.about_version_chrome);
+ TextView certificateIssuerDNTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_issuer_dn);
+ TextView certificateSubjectDNTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_subject_dn);
+ TextView certificateStartDateTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_start_date);
+ TextView certificateEndDateTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_end_date);
+ TextView certificateVersionTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_version);
+ TextView certificateSerialNumberTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_serial_number);
+ TextView certificateSignatureAlgorithmTextView = (TextView) tabLayout.findViewById(R.id.about_version_certificate_signature_algorithm);
// Setup the labels.
String version = getString(R.string.version) + " " + BuildConfig.VERSION_NAME + " (" + getString(R.string.version_code) + " " + Integer.toString(BuildConfig.VERSION_CODE) + ")";
String buildLabel = getString(R.string.build) + " ";
String webKitLabel = getString(R.string.webkit) + " ";
String chromeLabel = getString(R.string.chrome) + " ";
+ String issuerDNLabel = getString(R.string.issuer_dn) + " ";
+ String subjectDNLabel = getString(R.string.subject_dn) + " ";
+ String startDateLabel = getString(R.string.start_date) + " ";
+ String endDateLabel = getString(R.string.end_date) + " ";
+ String certificateVersionLabel = getString(R.string.certificate_version) + " ";
+ String serialNumberLabel = getString(R.string.serial_number) + " ";
+ String signatureAlgorithmLabel = getString(R.string.signature_algorithm) + " ";
// `webViewLayout` is only used to get the default user agent from `bare_webview`. It is not used to render content on the screen.
View webViewLayout = inflater.inflate(R.layout.bare_webview, container, false);
webKitStringBuilder.setSpan(blueColorSpan, webKitLabel.length(), webKitStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
chromeStringBuilder.setSpan(blueColorSpan, chromeLabel.length(), chromeStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
- // Display the strings.
+ // Display the strings in the text boxes.
versionNumberTextView.setText(version);
versionBrandTextView.setText(brandStringBuilder);
versionManufacturerTextView.setText(manufacturerStringBuilder);
versionAndroidTextView.setText(androidStringBuilder);
versionBuildTextView.setText(buildStringBuilder);
versionWebKitTextView.setText(webKitStringBuilder);
- versionChromeText.setText(chromeStringBuilder);
+ versionChromeTextView.setText(chromeStringBuilder);
// Build.VERSION.SECURITY_PATCH is only available for SDK_INT >= 23.
if (Build.VERSION.SDK_INT >= 23) {
} else { // Hide `versionRadioTextView`.
versionRadioTextView.setVisibility(View.GONE);
}
+
+ // Display the package signature.
+ try {
+ // Get the first package signature. Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
+ @SuppressLint("PackageManagerGetSignatures") Signature packageSignature = getContext().getPackageManager().getPackageInfo(getContext().getPackageName(), PackageManager.GET_SIGNATURES).signatures[0];
+
+ // Convert the signature to a `byte[]` `InputStream`.
+ InputStream certificateByteArrayInputStream = new ByteArrayInputStream(packageSignature.toByteArray());
+
+ // Display the certificate information on the screen.
+ try {
+ // Instantiate a `CertificateFactory`.
+ CertificateFactory certificateFactory = CertificateFactory.getInstance("X509");
+
+ // Generate an `X509Certificate`.
+ X509Certificate x509Certificate = (X509Certificate) certificateFactory.generateCertificate(certificateByteArrayInputStream);
+
+ // Store the individual sections of the certificate that we are interested in.
+ Principal issuerDNPrincipal = x509Certificate.getIssuerDN();
+ Principal subjectDNPrincipal = x509Certificate.getSubjectDN();
+ Date startDate = x509Certificate.getNotBefore();
+ Date endDate = x509Certificate.getNotAfter();
+ int certificateVersion = x509Certificate.getVersion();
+ BigInteger serialNumberBigInteger = x509Certificate.getSerialNumber();
+ String signatureAlgorithmNameString = x509Certificate.getSigAlgName();
+
+ // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
+ SpannableStringBuilder issuerDNStringBuilder = new SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString());
+ SpannableStringBuilder subjectDNStringBuilder = new SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString());
+ SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate));
+ SpannableStringBuilder endDataStringBuilder = new SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate));
+ SpannableStringBuilder certificateVersionStringBuilder = new SpannableStringBuilder(certificateVersionLabel + certificateVersion);
+ SpannableStringBuilder serialNumberStringBuilder = new SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger);
+ SpannableStringBuilder signatureAlgorithmStringBuilder = new SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString);
+
+ // Setup the spans to display the device information in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
+ issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length(), issuerDNStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length(), subjectDNStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDataStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length(), certificateVersionStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length(), serialNumberStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length(), signatureAlgorithmStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+
+ // Display the strings in the text boxes.
+ certificateIssuerDNTextView.setText(issuerDNStringBuilder);
+ certificateSubjectDNTextView.setText(subjectDNStringBuilder);
+ certificateStartDateTextView.setText(startDateStringBuilder);
+ certificateEndDateTextView.setText(endDataStringBuilder);
+ certificateVersionTextView.setText(certificateVersionStringBuilder);
+ certificateSerialNumberTextView.setText(serialNumberStringBuilder);
+ certificateSignatureAlgorithmTextView.setText(signatureAlgorithmStringBuilder);
+ } catch (CertificateException e) {
+ // Do nothing if there is a certificate error.
+ }
+ } catch (PackageManager.NameNotFoundException e) {
+ // Do nothing if `PackageManager` says Privacy Browser isn't installed.
+ }
} else { // load a WebView for all the other tabs. Tab numbers start at 0.
// Setting false at the end of inflater.inflate does not attach the inflated layout as a child of container.
// The fragment will take care of attaching the root automatically.
<?xml version="1.0" encoding="utf-8"?>
<!--
- Copyright 2016 Soren Stoutner <soren@stoutner.com>.
+ Copyright 2016-2017 Soren Stoutner <soren@stoutner.com>.
This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
android:id="@+id/about_version_chrome"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
+
+ <!-- Package Signature. -->
+ <TextView
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"
+ android:text="@string/package_signature"
+ android:textStyle="bold"
+ android:textSize="18sp"
+ android:textColor="@color/blue_900"
+ android:paddingTop="12dp" />
+
+ <TextView
+ android:id="@+id/about_version_certificate_issuer_dn"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_subject_dn"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_start_date"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_end_date"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_version"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_serial_number"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
+
+ <TextView
+ android:id="@+id/about_version_certificate_signature_algorithm"
+ android:layout_height="wrap_content"
+ android:layout_width="wrap_content"/>
</LinearLayout>
</LinearLayout>
</ScrollView>
\ No newline at end of file
projects / PrivacyBrowserAndroid.git / commitdiff