X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Ffragments%2FAboutTabFragment.java;h=5c811e8d42ef1e6202f0e1adbd8f3dfb41054976;hp=b3e9e5a44fa4c44bbf25cf14401db0351b5ac409;hb=af807cce079aaae9cbf0430e7da946fcbe0c99c3;hpb=61a76e491469916f2f30aebb47b98cda7cceb557 diff --git a/app/src/main/java/com/stoutner/privacybrowser/fragments/AboutTabFragment.java b/app/src/main/java/com/stoutner/privacybrowser/fragments/AboutTabFragment.java index b3e9e5a4..5c811e8d 100644 --- a/app/src/main/java/com/stoutner/privacybrowser/fragments/AboutTabFragment.java +++ b/app/src/main/java/com/stoutner/privacybrowser/fragments/AboutTabFragment.java @@ -1,5 +1,5 @@ /* - * Copyright 2016-2017 Soren Stoutner . + * Copyright © 2016-2019 Soren Stoutner . * * This file is part of Privacy Browser . * @@ -19,9 +19,12 @@ package com.stoutner.privacybrowser.fragments; +import android.annotation.SuppressLint; +import android.content.Context; +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 android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.style.ForegroundColorSpan; @@ -31,53 +34,95 @@ import android.view.ViewGroup; import android.webkit.WebView; import android.widget.TextView; +import androidx.annotation.NonNull; +import androidx.fragment.app.Fragment; + import com.stoutner.privacybrowser.BuildConfig; import com.stoutner.privacybrowser.R; +import com.stoutner.privacybrowser.activities.MainWebViewActivity; + +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 { + // Track the current tab number. private int tabNumber; - // AboutTabFragment.createTab stores the tab number in the bundle arguments so it can be referenced from onCreate(). + // Store the tab number in the arguments bundle. public static AboutTabFragment createTab(int tab) { - Bundle thisTabArguments = new Bundle(); - thisTabArguments.putInt("Tab", tab); + // Create a bundle. + Bundle bundle = new Bundle(); + + // Store the tab number in the bundle. + bundle.putInt("Tab", tab); + + // Add the bundle to the fragment. + AboutTabFragment aboutTabFragment = new AboutTabFragment(); + aboutTabFragment.setArguments(bundle); - AboutTabFragment thisTab = new AboutTabFragment(); - thisTab.setArguments(thisTabArguments); - return thisTab; + // Return the new fragment. + return aboutTabFragment; } @Override public void onCreate(Bundle savedInstanceState) { + // Run the default commands. super.onCreate(savedInstanceState); - // Store the tab number in tabNumber. + // Remove the lint warning that `getArguments()` might be null. + assert getArguments() != null; + + // Store the tab number in a class variable. tabNumber = getArguments().getInt("Tab"); } @Override - public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { + public View onCreateView(@NonNull LayoutInflater layoutInflater, ViewGroup container, Bundle savedInstanceState) { + // Create a tab layout view. View tabLayout; + // Get a handle for the context and assert that it isn't null. + Context context = getContext(); + assert context != null; + // Load the tabs. Tab numbers start at 0. if (tabNumber == 0) { // Load the about tab. - // 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. - tabLayout = inflater.inflate(R.layout.about_tab_version, container, false); + // 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. + tabLayout = layoutInflater.inflate(R.layout.about_tab_version, container, false); // Get handles for the `TextViews`. - TextView versionNumberTextView = (TextView) tabLayout.findViewById(R.id.about_version_number); - TextView versionBrandTextView = (TextView) tabLayout.findViewById(R.id.about_version_brand); - TextView versionManufacturerTextView = (TextView) tabLayout.findViewById(R.id.about_version_manufacturer); - TextView versionModelTextView = (TextView) tabLayout.findViewById(R.id.about_version_model); - TextView versionDeviceTextView = (TextView) tabLayout.findViewById(R.id.about_version_device); - TextView versionBootloaderTextView = (TextView) tabLayout.findViewById(R.id.about_version_bootloader); - TextView versionRadioTextView = (TextView) tabLayout.findViewById(R.id.about_version_radio); - TextView versionAndroidTextView = (TextView) tabLayout.findViewById(R.id.about_version_android); - 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 versionTextView = tabLayout.findViewById(R.id.version); + TextView brandTextView = tabLayout.findViewById(R.id.brand); + TextView manufacturerTextView = tabLayout.findViewById(R.id.manufacturer); + TextView modelTextView = tabLayout.findViewById(R.id.model); + TextView deviceTextView = tabLayout.findViewById(R.id.device); + TextView bootloaderTextView = tabLayout.findViewById(R.id.bootloader); + TextView radioTextView = tabLayout.findViewById(R.id.radio); + TextView androidTextView = tabLayout.findViewById(R.id.android); + TextView securityPatchTextView = tabLayout.findViewById(R.id.security_patch); + TextView buildTextView = tabLayout.findViewById(R.id.build); + TextView webViewTextView = tabLayout.findViewById(R.id.webview); + TextView orbotTextView = tabLayout.findViewById(R.id.orbot); + TextView openKeychainTextView = tabLayout.findViewById(R.id.open_keychain); + TextView easyListTextView = tabLayout.findViewById(R.id.easylist); + TextView easyPrivacyTextView = tabLayout.findViewById(R.id.easyprivacy); + TextView fanboyAnnoyanceTextView = tabLayout.findViewById(R.id.fanboy_annoyance); + TextView fanboySocialTextView = tabLayout.findViewById(R.id.fanboy_social); + TextView ultraPrivacyTextView = tabLayout.findViewById(R.id.ultraprivacy); + TextView certificateIssuerDNTextView = tabLayout.findViewById(R.id.certificate_issuer_dn); + TextView certificateSubjectDNTextView = tabLayout.findViewById(R.id.certificate_subject_dn); + TextView certificateStartDateTextView = tabLayout.findViewById(R.id.certificate_start_date); + TextView certificateEndDateTextView = tabLayout.findViewById(R.id.certificate_end_date); + TextView certificateVersionTextView = tabLayout.findViewById(R.id.certificate_version); + TextView certificateSerialNumberTextView = tabLayout.findViewById(R.id.certificate_serial_number); + TextView certificateSignatureAlgorithmTextView = tabLayout.findViewById(R.id.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) + ")"; @@ -88,12 +133,23 @@ public class AboutTabFragment extends Fragment { String bootloaderLabel = getString(R.string.bootloader) + " "; String androidLabel = getString(R.string.android) + " "; String buildLabel = getString(R.string.build) + " "; - String webKitLabel = getString(R.string.webkit) + " "; - String chromeLabel = getString(R.string.chrome) + " "; + String webViewLabel = getString(R.string.webview) + " "; + String easyListLabel = getString(R.string.easylist_label) + " "; + String easyPrivacyLabel = getString(R.string.easyprivacy_label) + " "; + String fanboyAnnoyanceLabel = getString(R.string.fanboy_annoyance_label) + " "; + String fanboySocialLabel = getString(R.string.fanboy_social_label) + " "; + String ultraPrivacyLabel = getString(R.string.ultraprivacy_label) + " "; + 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); - WebView tabLayoutWebView = (WebView) webViewLayout.findViewById(R.id.bare_webview); + View webViewLayout = layoutInflater.inflate(R.layout.bare_webview, container, false); + WebView tabLayoutWebView = webViewLayout.findViewById(R.id.bare_webview); String userAgentString = tabLayoutWebView.getSettings().getUserAgentString(); // Get the device's information and store it in strings. @@ -105,12 +161,28 @@ public class AboutTabFragment extends Fragment { String radio = Build.getRadioVersion(); String android = Build.VERSION.RELEASE + " (" + getString(R.string.api) + " " + Integer.toString(Build.VERSION.SDK_INT) + ")"; String build = Build.DISPLAY; - // Select the substring that begins after "Safari/" and goes to the end of the string. - String webKit = userAgentString.substring(userAgentString.indexOf("Safari/") + 7); - // Select the substring that begins after "Chrome/" and goes until the next " ". - String chrome = userAgentString.substring(userAgentString.indexOf("Chrome/") + 7, userAgentString.indexOf(" ", userAgentString.indexOf("Chrome/"))); + // Select the substring that begins after `Chrome/` and goes until the next ` `. + String webView = userAgentString.substring(userAgentString.indexOf("Chrome/") + 7, userAgentString.indexOf(" ", userAgentString.indexOf("Chrome/"))); + + // Get the Orbot version name if Orbot is installed. + String orbot; + try { + // Store the version name. + orbot = context.getPackageManager().getPackageInfo("org.torproject.android", 0).versionName; + } catch (PackageManager.NameNotFoundException exception) { // Orbot is not installed. + orbot = ""; + } - // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text. + // Get the OpenKeychain version name if it is installed. + String openKeychain; + try { + // Store the version name. + openKeychain = context.getPackageManager().getPackageInfo("org.sufficientlysecure.keychain", 0).versionName; + } catch (PackageManager.NameNotFoundException exception) { // OpenKeychain is not installed. + openKeychain = ""; + } + + // Create a `SpannableStringBuilder` for the hardware and software `TextViews` that needs multiple colors of text. SpannableStringBuilder brandStringBuilder = new SpannableStringBuilder(brandLabel + brand); SpannableStringBuilder manufacturerStringBuilder = new SpannableStringBuilder(manufacturerLabel + manufacturer); SpannableStringBuilder modelStringBuilder = new SpannableStringBuilder(modelLabel + model); @@ -118,11 +190,24 @@ public class AboutTabFragment extends Fragment { SpannableStringBuilder bootloaderStringBuilder = new SpannableStringBuilder(bootloaderLabel + bootloader); SpannableStringBuilder androidStringBuilder = new SpannableStringBuilder(androidLabel + android); SpannableStringBuilder buildStringBuilder = new SpannableStringBuilder(buildLabel + build); - SpannableStringBuilder webKitStringBuilder = new SpannableStringBuilder(webKitLabel + webKit); - SpannableStringBuilder chromeStringBuilder = new SpannableStringBuilder(chromeLabel + chrome); + SpannableStringBuilder webViewStringBuilder = new SpannableStringBuilder(webViewLabel + webView); + SpannableStringBuilder easyListStringBuilder = new SpannableStringBuilder(easyListLabel + MainWebViewActivity.easyListVersion); + SpannableStringBuilder easyPrivacyStringBuilder = new SpannableStringBuilder(easyPrivacyLabel + MainWebViewActivity.easyPrivacyVersion); + SpannableStringBuilder fanboyAnnoyanceStringBuilder = new SpannableStringBuilder(fanboyAnnoyanceLabel + MainWebViewActivity.fanboysAnnoyanceVersion); + SpannableStringBuilder fanboySocialStringBuilder = new SpannableStringBuilder(fanboySocialLabel + MainWebViewActivity.fanboysSocialVersion); + SpannableStringBuilder ultraPrivacyStringBuilder = new SpannableStringBuilder(ultraPrivacyLabel + MainWebViewActivity.ultraPrivacyVersion); - // Create a blue `ForegroundColorSpan`. We have to use the deprecated `getColor` until API >= 23. - @SuppressWarnings("deprecation") ForegroundColorSpan blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700)); + // Create the `blueColorSpan` variable. + ForegroundColorSpan blueColorSpan; + + // Set `blueColorSpan` according to the theme. We have to use the deprecated `getColor()` until API >= 23. + if (MainWebViewActivity.darkTheme) { + //noinspection deprecation + blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_400)); + } else { + //noinspection deprecation + blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700)); + } // Setup the spans to display the device information in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction. brandStringBuilder.setSpan(blueColorSpan, brandLabel.length(), brandStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); @@ -132,20 +217,28 @@ public class AboutTabFragment extends Fragment { bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length(), bootloaderStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); androidStringBuilder.setSpan(blueColorSpan, androidLabel.length(), androidStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); buildStringBuilder.setSpan(blueColorSpan, buildLabel.length(), buildStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); - 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. - versionNumberTextView.setText(version); - versionBrandTextView.setText(brandStringBuilder); - versionManufacturerTextView.setText(manufacturerStringBuilder); - versionModelTextView.setText(modelStringBuilder); - versionDeviceTextView.setText(deviceStringBuilder); - versionBootloaderTextView.setText(bootloaderStringBuilder); - versionAndroidTextView.setText(androidStringBuilder); - versionBuildTextView.setText(buildStringBuilder); - versionWebKitTextView.setText(webKitStringBuilder); - versionChromeText.setText(chromeStringBuilder); + webViewStringBuilder.setSpan(blueColorSpan, webViewLabel.length(), webViewStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length(), easyListStringBuilder.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length(), easyPrivacyStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length(), fanboyAnnoyanceStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length(), fanboySocialStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length(), ultraPrivacyStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + + // Display the strings in the text boxes. + versionTextView.setText(version); + brandTextView.setText(brandStringBuilder); + manufacturerTextView.setText(manufacturerStringBuilder); + modelTextView.setText(modelStringBuilder); + deviceTextView.setText(deviceStringBuilder); + bootloaderTextView.setText(bootloaderStringBuilder); + androidTextView.setText(androidStringBuilder); + buildTextView.setText(buildStringBuilder); + webViewTextView.setText(webViewStringBuilder); + easyListTextView.setText(easyListStringBuilder); + easyPrivacyTextView.setText(easyPrivacyStringBuilder); + fanboyAnnoyanceTextView.setText(fanboyAnnoyanceStringBuilder); + fanboySocialTextView.setText(fanboySocialStringBuilder); + ultraPrivacyTextView.setText(ultraPrivacyStringBuilder); // Build.VERSION.SECURITY_PATCH is only available for SDK_INT >= 23. if (Build.VERSION.SDK_INT >= 23) { @@ -153,56 +246,166 @@ public class AboutTabFragment extends Fragment { String securityPatch = Build.VERSION.SECURITY_PATCH; SpannableStringBuilder securityPatchStringBuilder = new SpannableStringBuilder(securityPatchLabel + securityPatch); securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length(), securityPatchStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); - versionSecurityPatchTextView.setText(securityPatchStringBuilder); - } else { // Hide `versionSecurityPatchTextView`. - versionSecurityPatchTextView.setVisibility(View.GONE); + securityPatchTextView.setText(securityPatchStringBuilder); + } else { // SDK_INT < 23. + securityPatchTextView.setVisibility(View.GONE); } - // Only populate `versionRadioTextView` if there is a radio in the device. - if (!radio.equals("")) { + // Only populate the radio text view if there is a radio in the device. + if (!radio.isEmpty()) { String radioLabel = getString(R.string.radio) + " "; SpannableStringBuilder radioStringBuilder = new SpannableStringBuilder(radioLabel + radio); radioStringBuilder.setSpan(blueColorSpan, radioLabel.length(), radioStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); - versionRadioTextView.setText(radioStringBuilder); - } else { // Hide `versionRadioTextView`. - versionRadioTextView.setVisibility(View.GONE); + radioTextView.setText(radioStringBuilder); + } else { // This device does not have a radio. + radioTextView.setVisibility(View.GONE); + } + + // Only populate the Orbot text view if it is installed. + if (!orbot.isEmpty()) { + String orbotLabel = getString(R.string.orbot) + " "; + SpannableStringBuilder orbotStringBuilder = new SpannableStringBuilder(orbotLabel + orbot); + orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length(), orbotStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + orbotTextView.setText(orbotStringBuilder); + } else { // Orbot is not installed. + orbotTextView.setVisibility(View.GONE); + } + + // Only populate the OpenKeychain text view if it is installed. + if (!openKeychain.isEmpty()) { + String openKeychainLabel = getString(R.string.openkeychain) + " "; + SpannableStringBuilder openKeychainStringBuilder = new SpannableStringBuilder(openKeychainLabel + openKeychain); + openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length(), openKeychainStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE); + openKeychainTextView.setText(openKeychainStringBuilder); + } else { //OpenKeychain is not installed. + openKeychainTextView.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. - tabLayout = inflater.inflate(R.layout.bare_webview, container, false); + } 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. + tabLayout = layoutInflater.inflate(R.layout.bare_webview, container, false); + + // Get a handle for `tabWebView`. WebView tabWebView = (WebView) tabLayout; - switch (tabNumber) { - case 1: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_permissions.html"); - break; + // Load the tabs according to the theme. + if (MainWebViewActivity.darkTheme) { // The dark theme is applied. + // Set the background color. The deprecated `.getColor()` must be used until the minimum API >= 23. + //noinspection deprecation + tabWebView.setBackgroundColor(getResources().getColor(R.color.gray_850)); + + switch (tabNumber) { + case 1: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_permissions_dark.html"); + break; + + case 2: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_privacy_policy_dark.html"); + break; + + case 3: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_changelog_dark.html"); + break; + + case 4: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_licenses_dark.html"); + break; + + case 5: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_contributors_dark.html"); + break; - case 2: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_privacy_policy.html"); - break; + case 6: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_links_dark.html"); + break; + } + } else { // The light theme is applied. + switch (tabNumber) { + case 1: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_permissions_light.html"); + break; - case 3: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_changelog.html"); - break; + case 2: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_privacy_policy_light.html"); + break; - case 4: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_licenses.html"); - break; + case 3: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_changelog_light.html"); + break; - case 5: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_contributors.html"); - break; + case 4: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_licenses_light.html"); + break; - case 6: - tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_links.html"); - break; + case 5: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_contributors_light.html"); + break; - default: - break; + case 6: + tabWebView.loadUrl("file:///android_asset/" + getString(R.string.android_asset_path) + "/about_links_light.html"); + break; + } } } + // Return the formatted `tabLayout`. return tabLayout; } } \ No newline at end of file