app/src/main/java/com/stoutner/privacybrowser/ViewSslCertificate.java

   1 /**
   2  * Copyright 2016 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;
  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 java.util.Date;
  37
  38 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
  39 @SuppressLint("InflateParams")
  40 public class ViewSslCertificate extends DialogFragment {
  41     public Dialog onCreateDialog(Bundle savedInstanceState) {
  42         // Get the activity's layout inflater.
  43         LayoutInflater layoutInflater   = getActivity().getLayoutInflater();
  44
  45         // Create a drawable version of the favorite icon.
  46         Drawable favoriteIconDrawable = new BitmapDrawable(getResources(), MainWebViewActivity.favoriteIcon);
  47
  48         // Use `AlertDialog.Builder` to create the `AlertDialog`.  `R.style.LightAlertDialog` formats the color of the button text.
  49         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
  50         dialogBuilder.setIcon(favoriteIconDrawable);
  51
  52         // Set an `onClick` listener on the negative button.  Using `null` closes the dialog without doing anything else.
  53         dialogBuilder.setNegativeButton(R.string.close, null);
  54
  55         // Check to see if the website is encrypted.
  56         if (MainWebViewActivity.sslCertificate == null) {  // The website is not encrypted.
  57             // Set the title.
  58             dialogBuilder.setTitle(R.string.unencrypted_website);
  59
  60             // Set the Layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  61             dialogBuilder.setView(layoutInflater.inflate(R.layout.unencrypted_website, null));
  62
  63             // Create an `AlertDialog` from the `AlertDialog.Builder`
  64             final AlertDialog alertDialog = dialogBuilder.create();
  65
  66             // Show `alertDialog`.
  67             alertDialog.show();
  68
  69             // `onCreateDialog` requires the return of an `AlertDialog`.
  70             return alertDialog;
  71
  72         } else {  // Display the SSL certificate information
  73             // Set the title.
  74             dialogBuilder.setTitle(R.string.ssl_certificate);
  75
  76             // Set the layout.  The parent view is `null` because it will be assigned by `AlertDialog`.
  77             dialogBuilder.setView(layoutInflater.inflate(R.layout.view_ssl_certificate, null));
  78
  79             // Create an `AlertDialog` from the `AlertDialog.Builder`
  80             final AlertDialog alertDialog = dialogBuilder.create();
  81
  82             // We need to show the `AlertDialog` before we can modify items in the layout.
  83             alertDialog.show();
  84
  85             // Get handles for the `TextViews`.
  86             TextView issuedToCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_cname);
  87             TextView issuedToONameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_oname);
  88             TextView issuedToUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_uname);
  89             TextView issuedByCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_cname);
  90             TextView issuedByONameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_oname);
  91             TextView issuedByUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_uname);
  92             TextView startDateTextView = (TextView) alertDialog.findViewById(R.id.start_date);
  93             TextView endDateTextView = (TextView) alertDialog.findViewById(R.id.end_date);
  94
  95             // Setup the labels.
  96             String cNameLabel = getString(R.string.common_name) + "  ";
  97             String oNameLabel = getString(R.string.organization) + "  ";
  98             String uNameLabel = getString(R.string.organizational_unit) + "  ";
  99             String startDateLabel = getString(R.string.start_date) + "  ";
 100             String endDateLabel = getString(R.string.end_date) + "  ";
 101
 102             // Get the SSL certificate.
 103             SslCertificate sslCertificate = MainWebViewActivity.sslCertificate;
 104
 105             // Get the strings from the SSL certificate.
 106             String issuedToCNameString = sslCertificate.getIssuedTo().getCName();
 107             String issuedToONameString = sslCertificate.getIssuedTo().getOName();
 108             String issuedToUNameString = sslCertificate.getIssuedTo().getUName();
 109             String issuedByCNameString = sslCertificate.getIssuedBy().getCName();
 110             String issuedByONameString = sslCertificate.getIssuedBy().getOName();
 111             String issuedByUNameString = sslCertificate.getIssuedBy().getUName();
 112             Date startDate = sslCertificate.getValidNotBeforeDate();
 113             Date endDate = sslCertificate.getValidNotAfterDate();
 114
 115             // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
 116             SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCNameString);
 117             SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToONameString);
 118             SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUNameString);
 119             SpannableStringBuilder issuedByCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedByCNameString);
 120             SpannableStringBuilder issuedByONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedByONameString);
 121             SpannableStringBuilder issuedByUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedByUNameString);
 122             SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + startDate.toString());
 123             SpannableStringBuilder endDateStringBuilder = new SpannableStringBuilder(endDateLabel + endDate.toString());
 124
 125             // Create a blue `ForegroundColorSpan`.  We have to use the deprecated `getColor` until API >= 23.
 126             @SuppressWarnings("deprecation") ForegroundColorSpan blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
 127
 128             // Setup the spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 129             issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 130             issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 131             issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 132             issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 133             issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 134             issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 135             startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 136             endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 137
 138             // Display the strings.
 139             issuedToCNameTextView.setText(issuedToCNameStringBuilder);
 140             issuedToONameTextView.setText(issuedToONameStringBuilder);
 141             issuedToUNameTextView.setText(issuedToUNameStringBuilder);
 142             issuedByCNameTextView.setText(issuedByCNameStringBuilder);
 143             issuedByONameTextView.setText(issuedByONameStringBuilder);
 144             issuedByUNameTextView.setText(issuedByUNameStringBuilder);
 145             startDateTextView.setText(startDateStringBuilder);
 146             endDateTextView.setText(endDateStringBuilder);
 147
 148             // `onCreateDialog` requires the return of an `AlertDialog`.
 149             return alertDialog;
 150         }
 151     }
 152 }