Add a context menu entry to Open in New Tab.
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / dialogs / ViewSslCertificateDialog.java
index c236d3a86e78061a3a581ab2e012fd269de48afd..28f76309e6df23f90c509b5a0e9c89d2227edf50 100644 (file)
 package com.stoutner.privacybrowser.dialogs;
 
 import android.annotation.SuppressLint;
-import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
-import android.app.DialogFragment;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.net.http.SslCertificate;
-import android.os.AsyncTask;
 import android.os.Bundle;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
 import android.text.style.ForegroundColorSpan;
 import android.view.LayoutInflater;
+import android.view.View;
 import android.view.WindowManager;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;  // The AndroidX dialog fragment must be used or an error is produced on API <=22.
+
 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
 import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.fragments.WebViewTabFragment;
+import com.stoutner.privacybrowser.views.NestedScrollWebView;
 
-import java.lang.ref.WeakReference;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
+import java.io.ByteArrayOutputStream;
 import java.text.DateFormat;
 import java.util.Calendar;
 import java.util.Date;
@@ -50,12 +53,51 @@ import java.util.Date;
 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
 @SuppressLint("InflateParams")
 public class ViewSslCertificateDialog extends DialogFragment {
+    public static ViewSslCertificateDialog displayDialog(long webViewFragmentId) {
+        // Create an arguments bundle.
+        Bundle argumentsBundle = new Bundle();
+
+        // Store the WebView fragment ID in the bundle.
+        argumentsBundle.putLong("webview_fragment_id", webViewFragmentId);
+
+        // Create a new instance of the dialog.
+        ViewSslCertificateDialog viewSslCertificateDialog = new ViewSslCertificateDialog();
+
+        // Add the bundle to the dialog.
+        viewSslCertificateDialog.setArguments(argumentsBundle);
+
+        // Return the new dialog.
+        return viewSslCertificateDialog;
+    }
+
+    @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
+        // Remove the incorrect lint warning below that the activity might be null.
+        assert getActivity() != null;
+
         // Get the activity's layout inflater.
-        LayoutInflater layoutInflater   = getActivity().getLayoutInflater();
+        LayoutInflater layoutInflater = getActivity().getLayoutInflater();
 
-        // Create a drawable version of the favorite icon.
-        Drawable favoriteIconDrawable = new BitmapDrawable(getResources(), MainWebViewActivity.favoriteIconBitmap);
+        // Get the arguments.
+        Bundle arguments = getArguments();
+
+        // Remove the incorrect lint warning below that `getArguments().getLong()` might be null.
+        assert arguments != null;
+
+        // Get the current position of this WebView fragment.
+        int webViewPosition = MainWebViewActivity.webViewPagerAdapter.getPositionForId(arguments.getLong("webview_fragment_id"));
+
+        // Get the WebView tab fragment.
+        WebViewTabFragment webViewTabFragment = MainWebViewActivity.webViewPagerAdapter.getPageFragment(webViewPosition);
+
+        // Get the fragment view.
+        View fragmentView = webViewTabFragment.getView();
+
+        // Remove the incorrect lint warning below that the fragment view might be null.
+        assert fragmentView != null;
+
+        // Get a handle for the current WebView.
+        NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
 
         // Use a builder to create the alert dialog.
         AlertDialog.Builder dialogBuilder;
@@ -67,14 +109,20 @@ public class ViewSslCertificateDialog extends DialogFragment {
             dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
         }
 
+        // Create a drawable version of the favorite icon.
+        Drawable favoriteIconDrawable = new BitmapDrawable(getResources(), nestedScrollWebView.getFavoriteOrDefaultIcon());
+
         // Set the icon.
         dialogBuilder.setIcon(favoriteIconDrawable);
 
         // Set a listener on the negative button.  Using `null` as the listener closes the dialog without doing anything else.
         dialogBuilder.setNegativeButton(R.string.close, null);
 
+        // Get the SSL certificate.
+        SslCertificate sslCertificate = nestedScrollWebView.getCertificate();
+
         // Check to see if the website is encrypted.
-        if (MainWebViewActivity.sslCertificate == null) {  // The website is not encrypted.
+        if (sslCertificate == null) {  // The website is not encrypted.
             // Set the title.
             dialogBuilder.setTitle(R.string.unencrypted_website);
 
@@ -132,6 +180,7 @@ public class ViewSslCertificateDialog extends DialogFragment {
 
             // Setup the labels.
             String domainLabel = getString(R.string.domain_label) + "  ";
+            String ipAddressesLabel = getString(R.string.ip_addresses) + "  ";
             String cNameLabel = getString(R.string.common_name) + "  ";
             String oNameLabel = getString(R.string.organization) + "  ";
             String uNameLabel = getString(R.string.organizational_unit) + "  ";
@@ -139,17 +188,11 @@ public class ViewSslCertificateDialog extends DialogFragment {
             String endDateLabel = getString(R.string.end_date) + "  ";
 
             // Convert the formatted URL string to a URI.
-            Uri uri = Uri.parse(MainWebViewActivity.formattedUrlString);
+            Uri uri = Uri.parse(nestedScrollWebView.getUrl());
 
             // Extract the domain name from the URI.
             String domainString = uri.getHost();
 
-            // Get the IP addresses.
-            new GetIpAddresses(getActivity(), alertDialog).execute(domainString);
-
-            // Get the SSL certificate.
-            SslCertificate sslCertificate = MainWebViewActivity.sslCertificate;
-
             // Get the strings from the SSL certificate.
             String issuedToCName = sslCertificate.getIssuedTo().getCName();
             String issuedToOName = sslCertificate.getIssuedTo().getOName();
@@ -162,6 +205,7 @@ public class ViewSslCertificateDialog extends DialogFragment {
 
             // Create spannable string builders for each text view that needs multiple colors of text.
             SpannableStringBuilder domainStringBuilder = new SpannableStringBuilder(domainLabel + domainString);
+            SpannableStringBuilder ipAddressesStringBuilder = new SpannableStringBuilder(ipAddressesLabel + nestedScrollWebView.getCurrentIpAddresses());
             SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCName);
             SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToOName);
             SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUName);
@@ -189,7 +233,7 @@ public class ViewSslCertificateDialog extends DialogFragment {
             // Remove the incorrect lint error that `.equals` might produce a NullPointerException.
             assert domainString != null;
 
-            // Formet the `domainString` and `issuedToCName` colors.
+            // Formet the domain string and issued to CName colors.
             if (domainString.equals(issuedToCName)) {  // `domainString` and `issuedToCName` match.
                 // Set the strings to be blue.
                 domainStringBuilder.setSpan(blueColorSpan, domainLabel.length(), domainStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
@@ -231,13 +275,15 @@ public class ViewSslCertificateDialog extends DialogFragment {
                 issuedToCNameStringBuilder.setSpan(redColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             }
 
-            // Set the issued to and issued by spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
+            // Set the IP addresses, issued to, and issued by spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
+            ipAddressesStringBuilder.setSpan(blueColorSpan, ipAddressesLabel.length(), ipAddressesStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
             issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 
+            // Get the current date.
             Date currentDate = Calendar.getInstance().getTime();
 
             //  Format the start date color.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
@@ -256,7 +302,7 @@ public class ViewSslCertificateDialog extends DialogFragment {
 
             // Display the strings.
             domainTextView.setText(domainStringBuilder);
-            ipAddressesTextView.setText(getString(R.string.ip_addresses));
+            ipAddressesTextView.setText(ipAddressesStringBuilder);
             issuedToCNameTextView.setText(issuedToCNameStringBuilder);
             issuedToONameTextView.setText(issuedToONameStringBuilder);
             issuedToUNameTextView.setText(issuedToUNameStringBuilder);
@@ -266,101 +312,8 @@ public class ViewSslCertificateDialog extends DialogFragment {
             startDateTextView.setText(startDateStringBuilder);
             endDateTextView.setText(endDateStringBuilder);
 
-            // `onCreateDialog` requires the return of an `AlertDialog`.
+            // `onCreateDialog` requires the return of an alert dialog.
             return alertDialog;
         }
     }
-
-    // This must run asynchronously because it involves a network request.  `String` declares the parameters.  `Void` does not declare progress units.  `String` contains the results.
-    private static class GetIpAddresses extends AsyncTask<String, Void, SpannableStringBuilder> {
-        // The weak references are used to determine if the activity or the alert dialog have disappeared while the AsyncTask is running.
-        private WeakReference<Activity> activityWeakReference;
-        private WeakReference<AlertDialog> alertDialogWeakReference;
-
-        GetIpAddresses(Activity activity, AlertDialog alertDialog) {
-            // Populate the weak references.
-            activityWeakReference = new WeakReference<>(activity);
-            alertDialogWeakReference = new WeakReference<>(alertDialog);
-        }
-
-        @Override
-        protected SpannableStringBuilder doInBackground(String... domainName) {
-            // Get handles for the activity and the alert dialog.
-            Activity activity = activityWeakReference.get();
-            AlertDialog alertDialog = alertDialogWeakReference.get();
-
-            // Abort if the activity or the dialog is gone.
-            if ((activity == null) || (activity.isFinishing()) || (alertDialog == null)) {
-                return new SpannableStringBuilder();
-            }
-
-            // Initialize an IP address string builder.
-            StringBuilder ipAddresses = new StringBuilder();
-
-            // Get an array with the IP addresses for the host.
-            try {
-                // Get an array with all the IP addresses for the domain.
-                InetAddress[] inetAddressesArray = InetAddress.getAllByName(domainName[0]);
-
-                // Add each IP address to the string builder.
-                for (InetAddress inetAddress : inetAddressesArray) {
-                    if (ipAddresses.length() == 0) {  // This is the first IP address.
-                        // Add the IP Address to the string builder.
-                        ipAddresses.append(inetAddress.getHostAddress());
-                    } else {  // This is not the first IP address.
-                        // Add a line break to the string builder first.
-                        ipAddresses.append("\n");
-
-                        // Add the IP address to the string builder.
-                        ipAddresses.append(inetAddress.getHostAddress());
-                    }
-                }
-            } catch (UnknownHostException exception) {
-                // Do nothing.
-            }
-
-            // Set the label.
-            String ipAddressesLabel = activity.getString(R.string.ip_addresses) + "  ";
-
-            // Create a spannable string builder.
-            SpannableStringBuilder ipAddressesStringBuilder = new SpannableStringBuilder(ipAddressesLabel + ipAddresses);
-
-            // Create a blue foreground color span.
-            ForegroundColorSpan blueColorSpan;
-
-            // Set the blue color span according to the theme.  The deprecated `getColor()` must be used until the minimum API >= 23.
-            if (MainWebViewActivity.darkTheme) {
-                //noinspection deprecation
-                blueColorSpan = new ForegroundColorSpan(activity.getResources().getColor(R.color.blue_400));
-            } else {
-                //noinspection deprecation
-                blueColorSpan = new ForegroundColorSpan(activity.getResources().getColor(R.color.blue_700));
-            }
-
-            // Set the string builder to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
-            ipAddressesStringBuilder.setSpan(blueColorSpan, ipAddressesLabel.length(), ipAddressesStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
-
-            // Return the formatted string.
-            return ipAddressesStringBuilder;
-        }
-
-        // `onPostExecute()` operates on the UI thread.
-        @Override
-        protected void onPostExecute(SpannableStringBuilder ipAddresses) {
-            // Get handles for the activity and the alert dialog.
-            Activity activity = activityWeakReference.get();
-            AlertDialog alertDialog = alertDialogWeakReference.get();
-
-            // Abort if the activity or the alert dialog is gone.
-            if ((activity == null) || (activity.isFinishing()) || (alertDialog == null)) {
-                return;
-            }
-
-            // Get a handle for the IP addresses text view.
-            TextView ipAddressesTextView = alertDialog.findViewById(R.id.ip_addresses);
-
-            // Populate the IP addresses text view.
-            ipAddressesTextView.setText(ipAddresses);
-        }
-    }
 }
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