2 * Copyright 2017-2023 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
6 * Privacy Browser Android 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 Android 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 Android. If not, see <http://www.gnu.org/licenses/>.
20 package com.stoutner.privacybrowser.dialogs
22 import android.app.Dialog
23 import android.content.Context
24 import android.content.DialogInterface
25 import android.graphics.drawable.BitmapDrawable
26 import android.graphics.drawable.Drawable
27 import android.os.Bundle
28 import android.view.WindowManager
30 import androidx.appcompat.app.AlertDialog
31 import androidx.core.content.ContextCompat
32 import androidx.fragment.app.DialogFragment
33 import androidx.preference.PreferenceManager
34 import androidx.viewpager.widget.ViewPager
36 import com.google.android.material.tabs.TabLayout
38 import com.stoutner.privacybrowser.R
39 import com.stoutner.privacybrowser.activities.MainWebViewActivity
40 import com.stoutner.privacybrowser.adapters.PinnedMismatchPagerAdapter
41 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper
42 import com.stoutner.privacybrowser.views.NestedScrollWebView
44 // Define the class constants.
45 private const val WEBVIEW_FRAGMENT_ID = "webview_fragment_id"
47 class PinnedMismatchDialog : DialogFragment() {
49 fun displayDialog(webViewFragmentId: Long): PinnedMismatchDialog {
50 // Create an arguments bundle.
51 val argumentsBundle = Bundle()
53 // Store the WebView fragment ID in the bundle.
54 argumentsBundle.putLong(WEBVIEW_FRAGMENT_ID, webViewFragmentId)
56 // Create a new instance of the pinned mismatch dialog.
57 val pinnedMismatchDialog = PinnedMismatchDialog()
59 // Add the arguments bundle to the new instance.
60 pinnedMismatchDialog.arguments = argumentsBundle
63 return pinnedMismatchDialog
67 // Declare the class variables.
68 private lateinit var pinnedMismatchListener: PinnedMismatchListener
70 // The public interface is used to send information back to the parent activity.
71 interface PinnedMismatchListener {
72 fun pinnedErrorGoBack()
75 override fun onAttach(context: Context) {
76 // Run the default commands.
77 super.onAttach(context)
79 // Get a handle for the listener from the launching context.
80 pinnedMismatchListener = context as PinnedMismatchListener
83 override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
84 // Get the WebView fragment ID.
85 val webViewFragmentId = requireArguments().getLong(WEBVIEW_FRAGMENT_ID)
87 // Get the current position of this WebView fragment.
88 val webViewPosition = MainWebViewActivity.webViewStateAdapter!!.getPositionForId(webViewFragmentId)
90 // Get the WebView tab fragment.
91 val webViewTabFragment = MainWebViewActivity.webViewStateAdapter!!.getPageFragment(webViewPosition)
93 // Get the fragment view.
94 val fragmentView = webViewTabFragment.requireView()
96 // Get a handle for the current WebView.
97 val nestedScrollWebView = fragmentView.findViewById<NestedScrollWebView>(R.id.nestedscroll_webview)!!
99 // Use an alert dialog builder to create the alert dialog.
100 val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
102 // Get the favorite icon.
103 val favoriteIconBitmap = nestedScrollWebView.getFavoriteIcon()
105 // Get the default favorite icon drawable. `ContextCompat` must be used until API >= 21.
106 val defaultFavoriteIconDrawable = ContextCompat.getDrawable(requireContext(), R.drawable.world)
108 // Cast the favorite icon drawable to a bitmap drawable.
109 val defaultFavoriteIconBitmapDrawable = (defaultFavoriteIconDrawable as BitmapDrawable)
111 // Store the default icon bitmap.
112 val defaultFavoriteIconBitmap = defaultFavoriteIconBitmapDrawable.bitmap
114 // Set the favorite icon as the dialog icon if it exists.
115 if (favoriteIconBitmap.sameAs(defaultFavoriteIconBitmap)) { // There is no website favorite icon.
117 dialogBuilder.setIcon(R.drawable.ssl_certificate)
118 } else { // There is a favorite icon.
119 // Create a drawable version of the favorite icon.
120 val favoriteIconDrawable: Drawable = BitmapDrawable(resources, favoriteIconBitmap)
123 dialogBuilder.setIcon(favoriteIconDrawable)
127 dialogBuilder.setTitle(R.string.pinned_mismatch)
130 dialogBuilder.setView(R.layout.pinned_mismatch_linearlayout)
132 // Set the update button listener.
133 dialogBuilder.setNeutralButton(R.string.update) { _: DialogInterface?, _: Int ->
134 // Get the current SSL certificate.
135 val currentSslCertificate = nestedScrollWebView.certificate!!
137 // Get the dates from the certificate.
138 val currentSslStartDate = currentSslCertificate.validNotBeforeDate
139 val currentSslEndDate = currentSslCertificate.validNotAfterDate
141 // Convert the dates into longs. If the date is null, a long value of `0` will be stored in the domains database entry.
142 val currentSslStartDateLong: Long = currentSslStartDate?.time ?: 0
143 val currentSslEndDateLong: Long = currentSslEndDate?.time ?: 0
145 // Initialize the database handler.
146 val domainsDatabaseHelper = DomainsDatabaseHelper(requireContext())
148 // Update the SSL certificate if it is pinned.
149 if (nestedScrollWebView.hasPinnedSslCertificate()) {
150 // Update the pinned SSL certificate in the domain database.
151 domainsDatabaseHelper.updatePinnedSslCertificate(nestedScrollWebView.domainSettingsDatabaseId, currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName,
152 currentSslCertificate.issuedTo.uName, currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDateLong,
153 currentSslEndDateLong)
155 // Update the pinned SSL certificate in the nested scroll WebView.
156 nestedScrollWebView.setPinnedSslCertificate(currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName, currentSslCertificate.issuedTo.uName,
157 currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDate, currentSslEndDate)
160 // Update the IP addresses if they are pinned.
161 if (nestedScrollWebView.pinnedIpAddresses != "") {
162 // Update the pinned IP addresses in the domain database.
163 domainsDatabaseHelper.updatePinnedIpAddresses(nestedScrollWebView.domainSettingsDatabaseId, nestedScrollWebView. currentIpAddresses)
165 // Update the pinned IP addresses in the nested scroll WebView.
166 nestedScrollWebView.pinnedIpAddresses = nestedScrollWebView.currentIpAddresses
170 // Set the back button listener.
171 dialogBuilder.setNegativeButton(R.string.back) { _: DialogInterface?, _: Int ->
172 if (nestedScrollWebView.canGoBack()) { // There is a back page in the history.
173 // Invoke the navigate history listener in the calling activity. These commands cannot be run here because they need access to `applyDomainSettings()`.
174 pinnedMismatchListener.pinnedErrorGoBack()
175 } else { // There are no pages to go back to.
177 nestedScrollWebView.loadUrl("")
181 // Set the proceed button listener.
182 dialogBuilder.setPositiveButton(R.string.proceed) { _: DialogInterface?, _: Int ->
183 // Do not check the pinned information for this domain again until the domain changes.
184 nestedScrollWebView.ignorePinnedDomainInformation = true
187 // Create an alert dialog from the alert dialog builder.
188 val alertDialog = dialogBuilder.create()
190 // Get a handle for the shared preferences.
191 val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireContext())
193 // Get the screenshot preference.
194 val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false)
196 // Disable screenshots if not allowed.
197 if (!allowScreenshots) {
198 // Disable screenshots.
199 alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
202 // The alert dialog must be shown before items in the layout can be modified.
205 // Get handles for the views.
206 val viewPager = alertDialog.findViewById<ViewPager>(R.id.pinned_ssl_certificate_mismatch_viewpager)!!
207 val tabLayout = alertDialog.findViewById<TabLayout>(R.id.pinned_ssl_certificate_mismatch_tablayout)!!
209 // Initialize the pinned mismatch pager adapter.
210 val pinnedMismatchPagerAdapter = PinnedMismatchPagerAdapter(requireContext(), layoutInflater, webViewFragmentId)
212 // Set the view pager adapter.
213 viewPager.adapter = pinnedMismatchPagerAdapter
215 // Connect the tab layout to the view pager.
216 tabLayout.setupWithViewPager(viewPager)
218 // Return the alert dialog.