Partial additional action button icons implementation.
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / SslCertificateError.java
1 /**
2  * Copyright 2015-2016 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.app.Activity;
23 import android.app.AlertDialog;
24 import android.app.Dialog;
25 import android.app.DialogFragment;
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.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 public class SslCertificateError extends DialogFragment{
39     private String primaryError;
40     private String urlWithError;
41     private String issuedToCName;
42     private String issuedToOName;
43     private String issuedToUName;
44     private String issuedByCName;
45     private String issuedByOName;
46     private String issuedByUName;
47     private String startDate;
48     private String endDate;
49
50     public static SslCertificateError displayDialog(SslError error) {
51         // Get the various components of the SSL error message.
52         int primaryErrorIntForBundle = error.getPrimaryError();
53         String urlWithErrorForBundle = error.getUrl();
54         SslCertificate sslCertificate = error.getCertificate();
55         String issuedToCNameForBundle = sslCertificate.getIssuedTo().getCName();
56         String issuedToONameForBundle = sslCertificate.getIssuedTo().getOName();
57         String issuedToUNameForBundle = sslCertificate.getIssuedTo().getUName();
58         String issuedByCNameForBundle = sslCertificate.getIssuedBy().getCName();
59         String issuedByONameForBundle = sslCertificate.getIssuedBy().getOName();
60         String issuedByUNameForBundle = sslCertificate.getIssuedBy().getUName();
61         Date startDateForBundle = sslCertificate.getValidNotBeforeDate();
62         Date endDateForBundle = sslCertificate.getValidNotAfterDate();
63
64         // Store the SSL error message components in a `Bundle`.
65         Bundle argumentsBundle = new Bundle();
66         argumentsBundle.putInt("PrimaryErrorInt", primaryErrorIntForBundle);
67         argumentsBundle.putString("UrlWithError", urlWithErrorForBundle);
68         argumentsBundle.putString("IssuedToCName", issuedToCNameForBundle);
69         argumentsBundle.putString("IssuedToOName", issuedToONameForBundle);
70         argumentsBundle.putString("IssuedToUName", issuedToUNameForBundle);
71         argumentsBundle.putString("IssuedByCName", issuedByCNameForBundle);
72         argumentsBundle.putString("IssuedByOName", issuedByONameForBundle);
73         argumentsBundle.putString("IssuedByUName", issuedByUNameForBundle);
74         argumentsBundle.putString("StartDate", startDateForBundle.toString());
75         argumentsBundle.putString("EndDate", endDateForBundle.toString());
76
77         // Add the `Bundle` to this instance of `SslCertificateError`.
78         SslCertificateError thisSslCertificateErrorDialog = new SslCertificateError();
79         thisSslCertificateErrorDialog.setArguments(argumentsBundle);
80         return thisSslCertificateErrorDialog;
81     }
82
83     public void onCreate(Bundle savedInstanceState) {
84         super.onCreate(savedInstanceState);
85
86         // Save the components of the SSL error message in class variables.
87         urlWithError = getArguments().getString("UrlWithError");
88         issuedToCName = getArguments().getString("IssuedToCName");
89         issuedToOName = getArguments().getString("IssuedToOName");
90         issuedToUName = getArguments().getString("IssuedToUName");
91         issuedByCName = getArguments().getString("IssuedByCName");
92         issuedByOName = getArguments().getString("IssuedByOName");
93         issuedByUName = getArguments().getString("IssuedByUName");
94         startDate = getArguments().getString("StartDate");
95         endDate = getArguments().getString("EndDate");
96
97         // Get the appropriate string for `primaryError.
98         int primaryErrorInt = getArguments().getInt("PrimaryErrorInt");
99         switch (primaryErrorInt) {
100             case SslError.SSL_NOTYETVALID:
101                 primaryError = getString(R.string.future_certificate);
102                 break;
103
104             case SslError.SSL_EXPIRED:
105                 primaryError = getString(R.string.expired_certificate);
106                 break;
107
108             case SslError.SSL_IDMISMATCH:
109                 primaryError = getString(R.string.cn_mismatch);
110                 break;
111
112             case SslError.SSL_UNTRUSTED:
113                 primaryError = getString(R.string.untrusted);
114                 break;
115
116             case SslError.SSL_DATE_INVALID:
117                 primaryError = getString(R.string.invalid_date);
118                 break;
119
120             case SslError.SSL_INVALID:
121                 primaryError = getString(R.string.invalid_certificate);
122                 break;
123         }
124     }
125
126     // The public interface is used to send information back to the parent activity.
127     public interface SslCertificateErrorListener {
128         void onSslErrorCancel();
129
130         void onSslErrorProceed();
131     }
132
133     // `sslCertificateErrorListener` is used in `onAttach` and `onCreateDialog`.
134     private SslCertificateErrorListener sslCertificateErrorListener;
135
136     // Check to make sure that the parent activity implements the listener.
137     public void onAttach(Activity parentActivity) {
138         super.onAttach(parentActivity);
139
140         try {
141             sslCertificateErrorListener = (SslCertificateErrorListener) parentActivity;
142         } catch(ClassCastException exception) {
143             throw new ClassCastException(parentActivity.toString() + " must implement SslCertificateErrorListener");
144         }
145     }
146
147     @Override
148     public Dialog onCreateDialog(Bundle savedInstanceState) {
149         // Get the activity's layout inflater.
150         LayoutInflater layoutInflater = getActivity().getLayoutInflater();
151
152         // Use `AlertDialog.Builder` to create the `AlertDialog`.  `R.style.LightAlertDialog` formats the color of the button text.
153         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
154         dialogBuilder.setTitle(R.string.ssl_certificate_error);
155         // The parent view is `null` because it will be assigned by `AlertDialog`.
156         dialogBuilder.setView(layoutInflater.inflate(R.layout.ssl_certificate_error, null));
157
158         // Set an `onClick` listener on the negative button.  `null` doesn't do anything extra when the button is pressed.  The `Dialog` will automatically close.
159         dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
160             @Override
161             public void onClick(DialogInterface dialog, int which) {
162                 sslCertificateErrorListener.onSslErrorCancel();
163             }
164         });
165
166         // Set an `onClick` listener on the positive button.
167         dialogBuilder.setPositiveButton(R.string.proceed, new DialogInterface.OnClickListener() {
168             @Override
169             public void onClick(DialogInterface dialog, int which) {
170                 sslCertificateErrorListener.onSslErrorProceed();
171             }
172         });
173
174
175         // Create an `AlertDialog` from the `AlertDialog.Builder`.
176         AlertDialog alertDialog = dialogBuilder.create();
177
178         // We have to show the `AlertDialog` before we can modify the content.
179         alertDialog.show();
180
181         // Get handles for the `TextViews`
182         TextView primaryErrorTextView = (TextView) alertDialog.findViewById(R.id.primary_error);
183         TextView urlTextView = (TextView) alertDialog.findViewById(R.id.url_error_dialog);
184         TextView issuedToCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_cname_error_dialog);
185         TextView issuedToONameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_oname_error_dialog);
186         TextView issuedToUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_to_uname_error_dialog);
187         TextView issuedByCNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_cname_error_dialog);
188         TextView issuedByONameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_oname_error_dialog);
189         TextView issuedByUNameTextView = (TextView) alertDialog.findViewById(R.id.issued_by_uname_error_dialog);
190         TextView startDateTextView = (TextView) alertDialog.findViewById(R.id.start_date_error_dialog);
191         TextView endDateTextView = (TextView) alertDialog.findViewById(R.id.end_date_error_dialog);
192
193         // Setup the common strings.
194         String urlLabel = getString(R.string.url_label) + "  ";
195         String cNameLabel = getString(R.string.common_name) + "  ";
196         String oNameLabel = getString(R.string.organization) + "  ";
197         String uNameLabel = getString(R.string.organizational_unit) + "  ";
198         String startDateLabel = getString(R.string.start_date) + "  ";
199         String endDateLabel = getString(R.string.end_date) + "  ";
200
201         // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
202         SpannableStringBuilder urlStringBuilder = new SpannableStringBuilder(urlLabel + urlWithError);
203         SpannableStringBuilder issuedToCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedToCName);
204         SpannableStringBuilder issuedToONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedToOName);
205         SpannableStringBuilder issuedToUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedToUName);
206         SpannableStringBuilder issuedByCNameStringBuilder = new SpannableStringBuilder(cNameLabel + issuedByCName);
207         SpannableStringBuilder issuedByONameStringBuilder = new SpannableStringBuilder(oNameLabel + issuedByOName);
208         SpannableStringBuilder issuedByUNameStringBuilder = new SpannableStringBuilder(uNameLabel + issuedByUName);
209         SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + startDate);
210         SpannableStringBuilder endDateStringBuilder = new SpannableStringBuilder((endDateLabel + endDate));
211
212         // Create a blue `ForegroundColorSpan`.  We have to use the deprecated `getColor` until API >= 23.
213         ForegroundColorSpan blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue));
214
215         // Setup the spans to display the certificate information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
216         urlStringBuilder.setSpan(blueColorSpan, urlLabel.length(), urlStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
217         issuedToCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedToCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
218         issuedToONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedToONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
219         issuedToUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedToUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
220         issuedByCNameStringBuilder.setSpan(blueColorSpan, cNameLabel.length(), issuedByCNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
221         issuedByONameStringBuilder.setSpan(blueColorSpan, oNameLabel.length(), issuedByONameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
222         issuedByUNameStringBuilder.setSpan(blueColorSpan, uNameLabel.length(), issuedByUNameStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
223         startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
224         endDateStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
225
226
227         // Display the strings.
228         primaryErrorTextView.setText(primaryError);
229         urlTextView.setText(urlStringBuilder);
230         issuedToCNameTextView.setText(issuedToCNameStringBuilder);
231         issuedToONameTextView.setText(issuedToONameStringBuilder);
232         issuedToUNameTextView.setText(issuedToUNameStringBuilder);
233         issuedByCNameTextView.setText(issuedByCNameStringBuilder);
234         issuedByONameTextView.setText(issuedByONameStringBuilder);
235         issuedByUNameTextView.setText(issuedByUNameStringBuilder);
236         startDateTextView.setText(startDateStringBuilder);
237         endDateTextView.setText(endDateStringBuilder);
238
239         // `onCreateDialog` requires the return of an `AlertDialog`.
240         return alertDialog;
241     }
242 }