2 * Copyright © 2017-2021 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.Dialog
24 import android.content.Context
25 import android.content.DialogInterface
26 import android.content.res.Configuration
27 import android.graphics.drawable.BitmapDrawable
28 import android.graphics.drawable.Drawable
29 import android.os.Bundle
30 import android.view.WindowManager
32 import androidx.appcompat.app.AlertDialog
33 import androidx.core.content.ContextCompat
34 import androidx.fragment.app.DialogFragment
35 import androidx.preference.PreferenceManager
36 import androidx.viewpager.widget.ViewPager
38 import com.google.android.material.tabs.TabLayout
40 import com.stoutner.privacybrowser.R
41 import com.stoutner.privacybrowser.activities.MainWebViewActivity
42 import com.stoutner.privacybrowser.adapters.PinnedMismatchPagerAdapter
43 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper
44 import com.stoutner.privacybrowser.views.NestedScrollWebView
46 // Define the class constants.
47 private const val WEBVIEW_FRAGMENT_ID = "webview_fragment_id"
49 class PinnedMismatchDialog : DialogFragment() {
50 // Declare the class variables.
51 private lateinit var pinnedMismatchListener: PinnedMismatchListener
53 // The public interface is used to send information back to the parent activity.
54 interface PinnedMismatchListener {
55 fun pinnedErrorGoBack()
58 override fun onAttach(context: Context) {
59 // Run the default commands.
60 super.onAttach(context)
62 // Get a handle for the listener from the launching context.
63 pinnedMismatchListener = context as PinnedMismatchListener
67 // `@JvmStatic` will no longer be required once all the code has transitioned to Kotlin. Also, the function can then be moved out of a companion object and just become a package-level function.
69 fun displayDialog(webViewFragmentId: Long): PinnedMismatchDialog {
70 // Create an arguments bundle.
71 val argumentsBundle = Bundle()
73 // Store the WebView fragment ID in the bundle.
74 argumentsBundle.putLong(WEBVIEW_FRAGMENT_ID, webViewFragmentId)
76 // Create a new instance of the pinned mismatch dialog.
77 val pinnedMismatchDialog = PinnedMismatchDialog()
79 // Add the arguments bundle to the new instance.
80 pinnedMismatchDialog.arguments = argumentsBundle
83 return pinnedMismatchDialog
87 // `@SuppressLint("InflateParams")` removes the warning about using `null` as the parent view group when inflating the alert dialog.
88 @SuppressLint("InflateParams")
89 override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
90 // Get the WebView fragment ID.
91 val webViewFragmentId = requireArguments().getLong(WEBVIEW_FRAGMENT_ID)
93 // Get the current position of this WebView fragment.
94 val webViewPosition = MainWebViewActivity.webViewPagerAdapter.getPositionForId(webViewFragmentId)
96 // Get the WebView tab fragment.
97 val webViewTabFragment = MainWebViewActivity.webViewPagerAdapter.getPageFragment(webViewPosition)
99 // Get the fragment view.
100 val fragmentView = webViewTabFragment.requireView()
102 // Get a handle for the current WebView.
103 val nestedScrollWebView = fragmentView.findViewById<NestedScrollWebView>(R.id.nestedscroll_webview)!!
105 // Use an alert dialog builder to create the alert dialog.
106 val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
108 // Get the favorite icon.
109 val favoriteIconBitmap = nestedScrollWebView.favoriteOrDefaultIcon
111 // Get the default favorite icon drawable. `ContextCompat` must be used until API >= 21.
112 val defaultFavoriteIconDrawable = ContextCompat.getDrawable(requireContext(), R.drawable.world)
114 // Cast the favorite icon drawable to a bitmap drawable.
115 val defaultFavoriteIconBitmapDrawable = (defaultFavoriteIconDrawable as BitmapDrawable)
117 // Store the default icon bitmap.
118 val defaultFavoriteIconBitmap = defaultFavoriteIconBitmapDrawable.bitmap
120 // Set the favorite icon as the dialog icon if it exists.
121 if (favoriteIconBitmap.sameAs(defaultFavoriteIconBitmap)) { // There is no website favorite icon.
122 // Get the current theme status.
123 val currentThemeStatus = resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK
125 // Set the icon according to the theme.
126 if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
127 dialogBuilder.setIcon(R.drawable.ssl_certificate_enabled_day)
129 dialogBuilder.setIcon(R.drawable.ssl_certificate_enabled_night)
131 } else { // There is a favorite icon.
132 // Create a drawable version of the favorite icon.
133 val favoriteIconDrawable: Drawable = BitmapDrawable(resources, favoriteIconBitmap)
136 dialogBuilder.setIcon(favoriteIconDrawable)
140 dialogBuilder.setTitle(R.string.pinned_mismatch)
142 // Set the layout. The parent view is `null` because it will be assigned by the alert dialog.
143 dialogBuilder.setView(layoutInflater.inflate(R.layout.pinned_mismatch_linearlayout, null))
145 // Set the update button listener.
146 dialogBuilder.setNeutralButton(R.string.update) { _: DialogInterface?, _: Int ->
147 // Get the current SSL certificate.
148 val currentSslCertificate = nestedScrollWebView.certificate!!
150 // Get the dates from the certificate.
151 val currentSslStartDate = currentSslCertificate.validNotBeforeDate
152 val currentSslEndDate = currentSslCertificate.validNotAfterDate
154 // Convert the dates into longs. If the date is null, a long value of `0` will be stored in the domains database entry.
155 val currentSslStartDateLong: Long = currentSslStartDate?.time ?: 0
156 val currentSslEndDateLong: Long = currentSslEndDate?.time ?: 0
158 // Initialize the database handler. The `0` specifies the database version, but that is ignored and set instead using a constant in the domains database helper.
159 val domainsDatabaseHelper = DomainsDatabaseHelper(context, null, null, 0)
161 // Update the SSL certificate if it is pinned.
162 if (nestedScrollWebView.hasPinnedSslCertificate()) {
163 // Update the pinned SSL certificate in the domain database.
164 domainsDatabaseHelper.updatePinnedSslCertificate(nestedScrollWebView.domainSettingsDatabaseId, currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName,
165 currentSslCertificate.issuedTo.uName, currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDateLong,
166 currentSslEndDateLong)
168 // Update the pinned SSL certificate in the nested scroll WebView.
169 nestedScrollWebView.setPinnedSslCertificate(currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName, currentSslCertificate.issuedTo.uName,
170 currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDate, currentSslEndDate)
173 // Update the IP addresses if they are pinned.
174 if (nestedScrollWebView.hasPinnedIpAddresses()) {
175 // Update the pinned IP addresses in the domain database.
176 domainsDatabaseHelper.updatePinnedIpAddresses(nestedScrollWebView.domainSettingsDatabaseId, nestedScrollWebView. currentIpAddresses)
178 // Update the pinned IP addresses in the nested scroll WebView.
179 nestedScrollWebView.pinnedIpAddresses = nestedScrollWebView.currentIpAddresses
183 // Set the back button listener.
184 dialogBuilder.setNegativeButton(R.string.back) { _: DialogInterface?, _: Int ->
185 if (nestedScrollWebView.canGoBack()) { // There is a back page in the history.
186 // Invoke the navigate history listener in the calling activity. These commands cannot be run here because they need access to `applyDomainSettings()`.
187 pinnedMismatchListener.pinnedErrorGoBack()
188 } else { // There are no pages to go back to.
190 nestedScrollWebView.loadUrl("")
194 // Set the proceed button listener.
195 dialogBuilder.setPositiveButton(R.string.proceed) { _: DialogInterface?, _: Int ->
196 // Do not check the pinned information for this domain again until the domain changes.
197 nestedScrollWebView.setIgnorePinnedDomainInformation(true)
200 // Create an alert dialog from the alert dialog builder.
201 val alertDialog = dialogBuilder.create()
203 // Get a handle for the shared preferences.
204 val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
206 // Get the screenshot preference.
207 val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false)
209 // Disable screenshots if not allowed.
210 if (!allowScreenshots) {
211 // Disable screenshots.
212 alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
215 // The alert dialog must be shown before items in the layout can be modified.
218 // Get handles for the views.
219 val viewPager = alertDialog.findViewById<ViewPager>(R.id.pinned_ssl_certificate_mismatch_viewpager)!!
220 val tabLayout = alertDialog.findViewById<TabLayout>(R.id.pinned_ssl_certificate_mismatch_tablayout)!!
222 // Initialize the pinned mismatch pager adapter.
223 val pinnedMismatchPagerAdapter = PinnedMismatchPagerAdapter(requireContext(), layoutInflater, webViewFragmentId)
225 // Set the view pager adapter.
226 viewPager.adapter = pinnedMismatchPagerAdapter
228 // Connect the tab layout to the view pager.
229 tabLayout.setupWithViewPager(viewPager)
231 // Return the alert dialog.