2 * Copyright 2016 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
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.
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.
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/>.
20 package com.stoutner.privacybrowser.dialogs;
22 import android.annotation.SuppressLint;
23 import android.app.AlertDialog;
24 import android.app.Dialog;
25 import android.content.Context;
26 import android.content.DialogInterface;
27 import android.net.http.SslCertificate;
28 import android.net.http.SslError;
29 import android.os.Bundle;
30 import android.support.annotation.NonNull;
31 import android.support.v7.app.AppCompatDialogFragment;
32 import android.text.SpannableStringBuilder;
33 import android.text.Spanned;
34 import android.text.style.ForegroundColorSpan;
35 import android.view.LayoutInflater;
36 import android.widget.TextView;
38 import com.stoutner.privacybrowser.R;
40 import java.util.Date;
42 public class SslCertificateError extends AppCompatDialogFragment {
44 private String primaryError;
45 private String urlWithError;
46 private String issuedToCName;
47 private String issuedToOName;
48 private String issuedToUName;
49 private String issuedByCName;
50 private String issuedByOName;
51 private String issuedByUName;
52 private String startDate;
53 private String endDate;
55 public static SslCertificateError displayDialog(SslError error) {
56 // Get the various components of the SSL error message.
57 int primaryErrorIntForBundle = error.getPrimaryError();
58 String urlWithErrorForBundle = error.getUrl();
59 SslCertificate sslCertificate = error.getCertificate();
60 String issuedToCNameForBundle = sslCertificate.getIssuedTo().getCName();
61 String issuedToONameForBundle = sslCertificate.getIssuedTo().getOName();
62 String issuedToUNameForBundle = sslCertificate.getIssuedTo().getUName();
63 String issuedByCNameForBundle = sslCertificate.getIssuedBy().getCName();
64 String issuedByONameForBundle = sslCertificate.getIssuedBy().getOName();
65 String issuedByUNameForBundle = sslCertificate.getIssuedBy().getUName();
66 Date startDateForBundle = sslCertificate.getValidNotBeforeDate();
67 Date endDateForBundle = sslCertificate.getValidNotAfterDate();
69 // Store the SSL error message components in a `Bundle`.
70 Bundle argumentsBundle = new Bundle();
71 argumentsBundle.putInt("PrimaryErrorInt", primaryErrorIntForBundle);
72 argumentsBundle.putString("UrlWithError", urlWithErrorForBundle);
73 argumentsBundle.putString("IssuedToCName", issuedToCNameForBundle);
74 argumentsBundle.putString("IssuedToOName", issuedToONameForBundle);
75 argumentsBundle.putString("IssuedToUName", issuedToUNameForBundle);
76 argumentsBundle.putString("IssuedByCName", issuedByCNameForBundle);
77 argumentsBundle.putString("IssuedByOName", issuedByONameForBundle);
78 argumentsBundle.putString("IssuedByUName", issuedByUNameForBundle);
79 argumentsBundle.putString("StartDate", startDateForBundle.toString());
80 argumentsBundle.putString("EndDate", endDateForBundle.toString());
82 // Add `argumentsBundle` to this instance of `SslCertificateError`.
83 SslCertificateError thisSslCertificateErrorDialog = new SslCertificateError();
84 thisSslCertificateErrorDialog.setArguments(argumentsBundle);
85 return thisSslCertificateErrorDialog;
89 public void onCreate(Bundle savedInstanceState) {
90 super.onCreate(savedInstanceState);
92 // Save the components of the SSL error message in class variables.
93 urlWithError = getArguments().getString("UrlWithError");
94 issuedToCName = getArguments().getString("IssuedToCName");
95 issuedToOName = getArguments().getString("IssuedToOName");
96 issuedToUName = getArguments().getString("IssuedToUName");
97 issuedByCName = getArguments().getString("IssuedByCName");
98 issuedByOName = getArguments().getString("IssuedByOName");
99 issuedByUName = getArguments().getString("IssuedByUName");
100 startDate = getArguments().getString("StartDate");
101 endDate = getArguments().getString("EndDate");
103 // Get the appropriate string for `primaryError.
104 int primaryErrorInt = getArguments().getInt("PrimaryErrorInt");
105 switch (primaryErrorInt) {
106 case SslError.SSL_NOTYETVALID:
107 primaryError = getString(R.string.future_certificate);
110 case SslError.SSL_EXPIRED:
111 primaryError = getString(R.string.expired_certificate);
114 case SslError.SSL_IDMISMATCH:
115 primaryError = getString(R.string.cn_mismatch);
118 case SslError.SSL_UNTRUSTED:
119 primaryError = getString(R.string.untrusted);
122 case SslError.SSL_DATE_INVALID:
123 primaryError = getString(R.string.invalid_date);
126 case SslError.SSL_INVALID:
127 primaryError = getString(R.string.invalid_certificate);
132 // The public interface is used to send information back to the parent activity.
133 public interface SslCertificateErrorListener {
134 void onSslErrorCancel();
136 void onSslErrorProceed();
139 // `sslCertificateErrorListener` is used in `onAttach` and `onCreateDialog`.
140 private SslCertificateErrorListener sslCertificateErrorListener;
142 // Check to make sure that the parent activity implements the listener.
143 public void onAttach(Context context) {
144 super.onAttach(context);
147 sslCertificateErrorListener = (SslCertificateErrorListener) context;
148 } catch(ClassCastException exception) {
149 throw new ClassCastException(context.toString() + " must implement SslCertificateErrorListener");
153 // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
154 @SuppressLint("InflateParams")
157 public Dialog onCreateDialog(Bundle savedInstanceState) {
158 // Get the activity's layout inflater.
159 LayoutInflater layoutInflater = getActivity().getLayoutInflater();
161 // Use `AlertDialog.Builder` to create the `AlertDialog`. `R.style.LightAlertDialog` formats the color of the button text.
162 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
163 dialogBuilder.setTitle(R.string.ssl_certificate_error);
164 // The parent view is `null` because it will be assigned by `AlertDialog`.
165 dialogBuilder.setView(layoutInflater.inflate(R.layout.ssl_certificate_error, null));
167 // Set an `onClick` listener on the negative button. `null` doesn't do anything extra when the button is pressed. The `Dialog` will automatically close.
168 dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
170 public void onClick(DialogInterface dialog, int which) {
171 sslCertificateErrorListener.onSslErrorCancel();
175 // Set an `onClick` listener on the positive button.
176 dialogBuilder.setPositiveButton(R.string.proceed, new DialogInterface.OnClickListener() {
178 public void onClick(DialogInterface dialog, int which) {
179 sslCertificateErrorListener.onSslErrorProceed();
184 // Create an `AlertDialog` from the `AlertDialog.Builder`.
185 AlertDialog alertDialog = dialogBuilder.create();
187 // We have to show the `AlertDialog` before we can modify the content.
190 // Get handles for the `TextViews`
191 TextView primaryErrorTextView = (TextView) alertDialog.findViewById(R.id.primary_error);
192 TextView urlTextView = (TextView) alertDialog.findViewById(R.id.url_error_dialog);
193 TextView issuedToCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_cname_error_dialog);
194 TextView issuedToONameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_oname_error_dialog);
195 TextView issuedToUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_uname_error_dialog);
196 TextView issuedByCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_cname_error_dialog);
197 TextView issuedByONameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_oname_error_dialog);
198 TextView issuedByUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_uname_error_dialog);
199 TextView startDateTextView = (TextView) alertDialog.findViewById(R.id.start_date_error_dialog);
200 TextView endDateTextView = (TextView) alertDialog.findViewById(R.id.end_date_error_dialog);
202 // Setup the common strings.
203 String urlLabel = getString(R.string.url_label) + " ";
204 String cNameLabel = getString(R.string.common_name) + " ";
205 String oNameLabel = getString(R.string.organization) + " ";
206 String uNameLabel = getString(R.string.organizational_unit) + " ";
207 String startDateLabel = getString(R.string.start_date) + " ";
208 String endDateLabel = getString(R.string.end_date) + " ";
210 // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
211 SpannableStringBuilder urlStringBuilder = new SpannableStringBuilder(urlLabel + urlWithError);
212 SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCName);
213 SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToOName);
214 SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUName);
215 SpannableStringBuilder issuedByCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedByCName);
216 SpannableStringBuilder issuedByONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedByOName);
217 SpannableStringBuilder issuedByUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedByUName);
218 SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + startDate);
219 SpannableStringBuilder endDateStringBuilder = new SpannableStringBuilder((endDateLabel + endDate));
221 // Create a blue `ForegroundColorSpan`. We have to use the deprecated `getColor` until API >= 23.
222 @SuppressWarnings("deprecation") ForegroundColorSpan blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
224 // Setup the spans to display the certificate information in blue. `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
225 urlStringBuilder.setSpan(blueColorSpan, urlLabel.length(), urlStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
226 issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
227 issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
228 issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
229 issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
230 issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
231 issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
232 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
233 endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
236 // Display the strings.
237 primaryErrorTextView.setText(primaryError);
238 urlTextView.setText(urlStringBuilder);
239 issuedToCNameTextView.setText(issuedToCNameStringBuilder);
240 issuedToONameTextView.setText(issuedToONameStringBuilder);
241 issuedToUNameTextView.setText(issuedToUNameStringBuilder);
242 issuedByCNameTextView.setText(issuedByCNameStringBuilder);
243 issuedByONameTextView.setText(issuedByONameStringBuilder);
244 issuedByUNameTextView.setText(issuedByUNameStringBuilder);
245 startDateTextView.setText(startDateStringBuilder);
246 endDateTextView.setText(endDateStringBuilder);
248 // `onCreateDialog` requires the return of an `AlertDialog`.