/* * Copyright 2017-2023 Soren Stoutner . * * This file is part of Privacy Browser Android . * * Privacy Browser Android is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Privacy Browser Android is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Privacy Browser Android. If not, see . */ package com.stoutner.privacybrowser.dialogs import android.app.Dialog import android.content.Context import android.content.DialogInterface import android.os.Bundle import android.view.WindowManager import androidx.appcompat.app.AlertDialog import androidx.fragment.app.DialogFragment import androidx.preference.PreferenceManager import androidx.viewpager.widget.ViewPager import com.google.android.material.tabs.TabLayout import com.stoutner.privacybrowser.R import com.stoutner.privacybrowser.activities.MainWebViewActivity import com.stoutner.privacybrowser.adapters.PinnedMismatchPagerAdapter import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper import com.stoutner.privacybrowser.views.NestedScrollWebView // Define the class constants. private const val WEBVIEW_FRAGMENT_ID = "webview_fragment_id" class PinnedMismatchDialog : DialogFragment() { companion object { fun displayDialog(webViewFragmentId: Long): PinnedMismatchDialog { // Create an arguments bundle. val argumentsBundle = Bundle() // Store the WebView fragment ID in the bundle. argumentsBundle.putLong(WEBVIEW_FRAGMENT_ID, webViewFragmentId) // Create a new instance of the pinned mismatch dialog. val pinnedMismatchDialog = PinnedMismatchDialog() // Add the arguments bundle to the new instance. pinnedMismatchDialog.arguments = argumentsBundle // Make it so. return pinnedMismatchDialog } } // Declare the class variables. private lateinit var pinnedMismatchListener: PinnedMismatchListener // The public interface is used to send information back to the parent activity. interface PinnedMismatchListener { fun pinnedErrorGoBack() } override fun onAttach(context: Context) { // Run the default commands. super.onAttach(context) // Get a handle for the listener from the launching context. pinnedMismatchListener = context as PinnedMismatchListener } override fun onCreateDialog(savedInstanceState: Bundle?): Dialog { // Try to create the dialog. This will fail if the app was restarted while the dialog is shown because the WebView view pager will not have been populated yet. try { // Get the WebView fragment ID. val webViewFragmentId = requireArguments().getLong(WEBVIEW_FRAGMENT_ID) // Get the current position of this WebView fragment. val webViewPosition = MainWebViewActivity.webViewStateAdapter!!.getPositionForId(webViewFragmentId) // Get the WebView tab fragment. val webViewTabFragment = MainWebViewActivity.webViewStateAdapter!!.getPageFragment(webViewPosition) // Get the fragment view. val fragmentView = webViewTabFragment.requireView() // Get a handle for the current WebView. val nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview)!! // Use an alert dialog builder to create the alert dialog. val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog) // Set the icon. dialogBuilder.setIcon(R.drawable.ssl_certificate) // Set the title. dialogBuilder.setTitle(R.string.pinned_mismatch) // Set the layout. dialogBuilder.setView(R.layout.pinned_mismatch_linearlayout) // Set the update button listener. dialogBuilder.setNeutralButton(R.string.update) { _: DialogInterface?, _: Int -> // Get the current SSL certificate. val currentSslCertificate = nestedScrollWebView.certificate!! // Get the dates from the certificate. val currentSslStartDate = currentSslCertificate.validNotBeforeDate val currentSslEndDate = currentSslCertificate.validNotAfterDate // Convert the dates into longs. If the date is null, a long value of `0` will be stored in the domains database entry. val currentSslStartDateLong: Long = currentSslStartDate?.time ?: 0 val currentSslEndDateLong: Long = currentSslEndDate?.time ?: 0 // Initialize the database handler. val domainsDatabaseHelper = DomainsDatabaseHelper(requireContext()) // Update the SSL certificate if it is pinned. if (nestedScrollWebView.hasPinnedSslCertificate()) { // Update the pinned SSL certificate in the domain database. domainsDatabaseHelper.updatePinnedSslCertificate(nestedScrollWebView.domainSettingsDatabaseId, currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName, currentSslCertificate.issuedTo.uName, currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDateLong, currentSslEndDateLong) // Update the pinned SSL certificate in the nested scroll WebView. nestedScrollWebView.setPinnedSslCertificate(currentSslCertificate.issuedTo.cName, currentSslCertificate.issuedTo.oName, currentSslCertificate.issuedTo.uName, currentSslCertificate.issuedBy.cName, currentSslCertificate.issuedBy.oName, currentSslCertificate.issuedBy.uName, currentSslStartDate, currentSslEndDate) } // Update the IP addresses if they are pinned. if (nestedScrollWebView.pinnedIpAddresses != "") { // Update the pinned IP addresses in the domain database. domainsDatabaseHelper.updatePinnedIpAddresses(nestedScrollWebView.domainSettingsDatabaseId, nestedScrollWebView.currentIpAddresses) // Update the pinned IP addresses in the nested scroll WebView. nestedScrollWebView.pinnedIpAddresses = nestedScrollWebView.currentIpAddresses } } // Set the back button listener. dialogBuilder.setNegativeButton(R.string.back) { _: DialogInterface?, _: Int -> if (nestedScrollWebView.canGoBack()) { // There is a back page in the history. // Invoke the navigate history listener in the calling activity. These commands cannot be run here because they need access to `applyDomainSettings()`. pinnedMismatchListener.pinnedErrorGoBack() } else { // There are no pages to go back to. // Load a blank page nestedScrollWebView.loadUrl("") } } // Set the proceed button listener. dialogBuilder.setPositiveButton(R.string.proceed) { _: DialogInterface?, _: Int -> // Do not check the pinned information for this domain again until the domain changes. nestedScrollWebView.ignorePinnedDomainInformation = true } // Create an alert dialog from the alert dialog builder. val alertDialog = dialogBuilder.create() // Get a handle for the shared preferences. val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(requireContext()) // Get the screenshot preference. val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false) // Disable screenshots if not allowed. if (!allowScreenshots) { // Disable screenshots. alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE) } // The alert dialog must be shown before items in the layout can be modified. alertDialog.show() // Get handles for the views. val viewPager = alertDialog.findViewById(R.id.pinned_ssl_certificate_mismatch_viewpager)!! val tabLayout = alertDialog.findViewById(R.id.pinned_ssl_certificate_mismatch_tablayout)!! // Initialize the pinned mismatch pager adapter. val pinnedMismatchPagerAdapter = PinnedMismatchPagerAdapter(requireContext(), layoutInflater, webViewFragmentId) // Set the view pager adapter. viewPager.adapter = pinnedMismatchPagerAdapter // Connect the tab layout to the view pager. tabLayout.setupWithViewPager(viewPager) // Return the alert dialog. return alertDialog } catch (exception: Exception) { // The app was restarted while the dialog was displayed. // Dismiss this new instance of the dialog. Amazingly, the old instance will be restored by Android and, even more amazingly, will be fully functional. dismiss() // Use an alert dialog builder to create an empty alert dialog. val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog) // Return the empty alert dialog. return dialogBuilder.create() } } }