app/src/main/java/com/stoutner/privacybrowser/dialogs/ViewSslCertificateDialog.java

   1 /*
   2  * Copyright 2016-2017 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.dialogs;
  21
  22 import android.annotation.SuppressLint;
  23 import android.app.AlertDialog;
  24 import android.app.Dialog;
  25 import android.app.DialogFragment;
  26 import android.graphics.drawable.BitmapDrawable;
  27 import android.graphics.drawable.Drawable;
  28 import android.net.http.SslCertificate;
  29 import android.os.Bundle;
  30 import android.text.SpannableStringBuilder;
  31 import android.text.Spanned;
  32 import android.text.style.ForegroundColorSpan;
  33 import android.view.LayoutInflater;
  34 import android.widget.TextView;
  35
  36 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
  37 import com.stoutner.privacybrowser.R;
  38
  39 import java.text.DateFormat;
  40 import java.util.Date;
  41
  42 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
  43 @SuppressLint("InflateParams")
  44 public class ViewSslCertificateDialog extends DialogFragment {
  45     public Dialog onCreateDialog(Bundle savedInstanceState) {
  46         // Get the activity's layout inflater.
  47         LayoutInflater layoutInflater   = getActivity().getLayoutInflater();
  48
  49         // Create a drawable version of the favorite icon.
  50         Drawable favoriteIconDrawable = new BitmapDrawable(getResources(), MainWebViewActivity.favoriteIconBitmap);
  51
  52         // Use `AlertDialog.Builder` to create the `AlertDialog`.  `R.style.LightAlertDialog` formats the color of the button text.
  53         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
  54         dialogBuilder.setIcon(favoriteIconDrawable);
  55
  56         // Set an `onClick` listener on the negative button.  Using `null` closes the dialog without doing anything else.
  57         dialogBuilder.setNegativeButton(R.string.close, null);
  58
  59         // Check to see if the website is encrypted.
  60         if (MainWebViewActivity.sslCertificate == null) {  // The website is not encrypted.
  61             // Set the title.
  62             dialogBuilder.setTitle(R.string.unencrypted_website);
  63
  64             // Set the Layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  65             dialogBuilder.setView(layoutInflater.inflate(R.layout.unencrypted_website, null));
  66
  67             // Create an `AlertDialog` from the `AlertDialog.Builder`
  68             final AlertDialog alertDialog = dialogBuilder.create();
  69
  70             // Show `alertDialog`.
  71             alertDialog.show();
  72
  73             // `onCreateDialog` requires the return of an `AlertDialog`.
  74             return alertDialog;
  75
  76         } else {  // Display the SSL certificate information
  77             // Set the title.
  78             dialogBuilder.setTitle(R.string.ssl_certificate);
  79
  80             // Set the layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  81             dialogBuilder.setView(layoutInflater.inflate(R.layout.view_ssl_certificate, null));
  82
  83             // Create an `AlertDialog` from the `AlertDialog.Builder`
  84             final AlertDialog alertDialog = dialogBuilder.create();
  85
  86             // We need to show the `AlertDialog` before we can modify items in the layout.
  87             alertDialog.show();
  88
  89             // Get handles for the `TextViews`.
  90             TextView issuedToCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_cname);
  91             TextView issuedToONameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_oname);
  92             TextView issuedToUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_uname);
  93             TextView issuedByCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_cname);
  94             TextView issuedByONameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_oname);
  95             TextView issuedByUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_uname);
  96             TextView startDateTextView = (TextView) alertDialog.findViewById(R.id.start_date);
  97             TextView endDateTextView = (TextView) alertDialog.findViewById(R.id.end_date);
  98
  99             // Setup the labels.
 100             String cNameLabel = getString(R.string.common_name) + "  ";
 101             String oNameLabel = getString(R.string.organization) + "  ";
 102             String uNameLabel = getString(R.string.organizational_unit) + "  ";
 103             String startDateLabel = getString(R.string.start_date) + "  ";
 104             String endDateLabel = getString(R.string.end_date) + "  ";
 105
 106             // Get the SSL certificate.
 107             SslCertificate sslCertificate = MainWebViewActivity.sslCertificate;
 108
 109             // Get the strings from the SSL certificate.
 110             String issuedToCNameString = sslCertificate.getIssuedTo().getCName();
 111             String issuedToONameString = sslCertificate.getIssuedTo().getOName();
 112             String issuedToUNameString = sslCertificate.getIssuedTo().getUName();
 113             String issuedByCNameString = sslCertificate.getIssuedBy().getCName();
 114             String issuedByONameString = sslCertificate.getIssuedBy().getOName();
 115             String issuedByUNameString = sslCertificate.getIssuedBy().getUName();
 116             Date startDate = sslCertificate.getValidNotBeforeDate();
 117             Date endDate = sslCertificate.getValidNotAfterDate();
 118
 119             // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
 120             SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCNameString);
 121             SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToONameString);
 122             SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUNameString);
 123             SpannableStringBuilder issuedByCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedByCNameString);
 124             SpannableStringBuilder issuedByONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedByONameString);
 125             SpannableStringBuilder issuedByUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedByUNameString);
 126             SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate));
 127             SpannableStringBuilder endDateStringBuilder = new SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate));
 128
 129             // Create a blue `ForegroundColorSpan`.  We have to use the deprecated `getColor` until API >= 23.
 130             @SuppressWarnings("deprecation") ForegroundColorSpan blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
 131
 132             // Setup the spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 133             issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 134             issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 135             issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 136             issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 137             issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 138             issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 139             startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 140             endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 141
 142             // Display the strings.
 143             issuedToCNameTextView.setText(issuedToCNameStringBuilder);
 144             issuedToONameTextView.setText(issuedToONameStringBuilder);
 145             issuedToUNameTextView.setText(issuedToUNameStringBuilder);
 146             issuedByCNameTextView.setText(issuedByCNameStringBuilder);
 147             issuedByONameTextView.setText(issuedByONameStringBuilder);
 148             issuedByUNameTextView.setText(issuedByUNameStringBuilder);
 149             startDateTextView.setText(startDateStringBuilder);
 150             endDateTextView.setText(endDateStringBuilder);
 151
 152             // `onCreateDialog` requires the return of an `AlertDialog`.
 153             return alertDialog;
 154         }
 155     }
 156 }