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.Calendar;
  41 import java.util.Date;
  42
  43 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
  44 @SuppressLint("InflateParams")
  45 public class ViewSslCertificateDialog extends DialogFragment {
  46     public Dialog onCreateDialog(Bundle savedInstanceState) {
  47         // Get the activity's layout inflater.
  48         LayoutInflater layoutInflater   = getActivity().getLayoutInflater();
  49
  50         // Create a drawable version of the favorite icon.
  51         Drawable favoriteIconDrawable = new BitmapDrawable(getResources(), MainWebViewActivity.favoriteIconBitmap);
  52
  53         // Use `AlertDialog.Builder` to create the `AlertDialog`.
  54         AlertDialog.Builder dialogBuilder;
  55
  56         // Set the style according to the theme.
  57         if (MainWebViewActivity.darkTheme) {
  58             dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
  59         } else {
  60             dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
  61         }
  62
  63         // Set the icon.
  64         dialogBuilder.setIcon(favoriteIconDrawable);
  65
  66         // Set an `onClick` listener on the negative button.  Using `null` closes the dialog without doing anything else.
  67         dialogBuilder.setNegativeButton(R.string.close, null);
  68
  69         // Check to see if the website is encrypted.
  70         if (MainWebViewActivity.sslCertificate == null) {  // The website is not encrypted.
  71             // Set the title.
  72             dialogBuilder.setTitle(R.string.unencrypted_website);
  73
  74             // Set the Layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  75             dialogBuilder.setView(layoutInflater.inflate(R.layout.unencrypted_website, null));
  76
  77             // Create an `AlertDialog` from the `AlertDialog.Builder`
  78             final AlertDialog alertDialog = dialogBuilder.create();
  79
  80             // Show `alertDialog`.
  81             alertDialog.show();
  82
  83             // `onCreateDialog` requires the return of an `AlertDialog`.
  84             return alertDialog;
  85
  86         } else {  // Display the SSL certificate information
  87             // Set the title.
  88             dialogBuilder.setTitle(R.string.ssl_certificate);
  89
  90             // Set the layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  91             dialogBuilder.setView(layoutInflater.inflate(R.layout.view_ssl_certificate, null));
  92
  93             // Create an `AlertDialog` from the `AlertDialog.Builder`
  94             final AlertDialog alertDialog = dialogBuilder.create();
  95
  96             // We need to show the `AlertDialog` before we can modify items in the layout.
  97             alertDialog.show();
  98
  99             // Get handles for the `TextViews`.
 100             TextView issuedToCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_cname);
 101             TextView issuedToONameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_oname);
 102             TextView issuedToUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_uname);
 103             TextView issuedByCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_cname);
 104             TextView issuedByONameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_oname);
 105             TextView issuedByUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_uname);
 106             TextView startDateTextView = (TextView) alertDialog.findViewById(R.id.start_date);
 107             TextView endDateTextView = (TextView) alertDialog.findViewById(R.id.end_date);
 108
 109             // Setup the labels.
 110             String cNameLabel = getString(R.string.common_name) + "  ";
 111             String oNameLabel = getString(R.string.organization) + "  ";
 112             String uNameLabel = getString(R.string.organizational_unit) + "  ";
 113             String startDateLabel = getString(R.string.start_date) + "  ";
 114             String endDateLabel = getString(R.string.end_date) + "  ";
 115
 116             // Get the SSL certificate.
 117             SslCertificate sslCertificate = MainWebViewActivity.sslCertificate;
 118
 119             // Get the strings from the SSL certificate.
 120             String issuedToCNameString = sslCertificate.getIssuedTo().getCName();
 121             String issuedToONameString = sslCertificate.getIssuedTo().getOName();
 122             String issuedToUNameString = sslCertificate.getIssuedTo().getUName();
 123             String issuedByCNameString = sslCertificate.getIssuedBy().getCName();
 124             String issuedByONameString = sslCertificate.getIssuedBy().getOName();
 125             String issuedByUNameString = sslCertificate.getIssuedBy().getUName();
 126             Date startDate = sslCertificate.getValidNotBeforeDate();
 127             Date endDate = sslCertificate.getValidNotAfterDate();
 128
 129             // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
 130             SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCNameString);
 131             SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToONameString);
 132             SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUNameString);
 133             SpannableStringBuilder issuedByCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedByCNameString);
 134             SpannableStringBuilder issuedByONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedByONameString);
 135             SpannableStringBuilder issuedByUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedByUNameString);
 136             SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate));
 137             SpannableStringBuilder endDateStringBuilder = new SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate));
 138
 139             // Create a red `ForegroundColorSpan`.  We have to use the deprecated `getColor` until API >= 23.
 140             @SuppressWarnings("deprecation") ForegroundColorSpan redColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.red_a700));
 141
 142             // Create a blue `ForegroundColorSpan`.
 143             ForegroundColorSpan blueColorSpan;
 144
 145             // Set `blueColorSpan` according to the theme.  We have to use the deprecated `getColor()` until API >= 23.
 146             if (MainWebViewActivity.darkTheme) {
 147                 //noinspection deprecation
 148                 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_400));
 149             } else {
 150                 //noinspection deprecation
 151                 blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
 152             }
 153
 154             // Setup the spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 155             issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 156             issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 157             issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 158             issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 159             issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 160             issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 161
 162             Date currentDate = Calendar.getInstance().getTime();
 163
 164             //  Format the start date color.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 165             if (startDate.after(currentDate)) {  // The certificate start date is in the future.
 166                 startDateStringBuilder.setSpan(redColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 167             } else {  // The certificate start date is in the past.
 168                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 169             }
 170
 171             // Format the end date color.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 172             if (endDate.before(currentDate)) {  // The certificate end date is in the past.
 173                 endDateStringBuilder.setSpan(redColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 174             } else {  // The certificate end date is in the future.
 175                 endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 176             }
 177
 178             // Display the strings.
 179             issuedToCNameTextView.setText(issuedToCNameStringBuilder);
 180             issuedToONameTextView.setText(issuedToONameStringBuilder);
 181             issuedToUNameTextView.setText(issuedToUNameStringBuilder);
 182             issuedByCNameTextView.setText(issuedByCNameStringBuilder);
 183             issuedByONameTextView.setText(issuedByONameStringBuilder);
 184             issuedByUNameTextView.setText(issuedByUNameStringBuilder);
 185             startDateTextView.setText(startDateStringBuilder);
 186             endDateTextView.setText(endDateStringBuilder);
 187
 188             // `onCreateDialog` requires the return of an `AlertDialog`.
 189             return alertDialog;
 190         }
 191     }
 192 }