Allow View Source to connect to untrusted SSL certificates. https://redmine.stoutner...

[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / dialogs / UntrustedSslCertificateDialog.kt

diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/UntrustedSslCertificateDialog.kt b/app/src/main/java/com/stoutner/privacybrowser/dialogs/UntrustedSslCertificateDialog.kt
new file mode 100644 (file)
index 0000000..7b71746
--- /dev/null
+++ b/app/src/main/java/com/stoutner/privacybrowser/dialogs/UntrustedSslCertificateDialog.kt
@@ -0,0 +1,116 @@
+/*
+ * Copyright © 2021 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser 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 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.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+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 com.stoutner.privacybrowser.R
+
+class UntrustedSslCertificateDialog : DialogFragment() {
+    // Declare the class variables.
+    private lateinit var untrustedSslCertificateListener: UntrustedSslCertificateListener
+    private var dismissDialog: Boolean = false
+
+    // The public interface is used to send information back to the parent activity.
+    interface UntrustedSslCertificateListener {
+        fun loadAnyway()
+    }
+
+    override fun onAttach(context: Context) {
+        // Run the default commands.
+        super.onAttach(context)
+
+        // Get a handle for the listener form the launching context.
+        untrustedSslCertificateListener = context as UntrustedSslCertificateListener
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        // Check to see if the app has been restarted.
+        if (savedInstanceState == null) {  // The app has not been restarted.
+            // Use a builder to create the alert dialog.
+            val dialogBuilder: AlertDialog.Builder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
+
+            // Set the icon according to the theme.
+            dialogBuilder.setIconAttribute(R.attr.sslCertificateBlueIcon)
+
+            // Set the title.
+            dialogBuilder.setTitle(R.string.ssl_certificate_error)
+
+            // Set the text.
+            dialogBuilder.setMessage(R.string.untrusted_ssl_certificate)
+
+            // Set the cancel button listener.  Using `null` as the listener closes the dialog without doing anything else.
+            dialogBuilder.setNegativeButton(R.string.cancel, null)
+
+            // Set the load anyway button listener.
+            dialogBuilder.setPositiveButton(R.string.load_anyway) { _: DialogInterface, _: Int ->
+                // Instruct the parent activity to load the URL anyway.
+                untrustedSslCertificateListener.loadAnyway()
+            }
+
+            // Create an alert dialog from the builder.
+            val alertDialog = dialogBuilder.create()
+
+            // Get a handle for the shared preferences.
+            val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
+
+            // Get the screenshot preference.
+            val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots), false)
+
+            // Disable screenshots if not allowed.
+            if (!allowScreenshots) {
+                alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
+            }
+
+            // Return the alert dialog.
+            return alertDialog
+        } else {  // The app has been restarted.  Close the dialog as a new one will automatically be created by GetSourceBackgroundTask.
+            // Use an alert dialog builder to create an empty alert dialog.
+            val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
+
+            // Create an empty alert dialog from the alert dialog builder.
+            val alertDialog = dialogBuilder.create()
+
+            // Set the flag to dismiss the dialog as soon as it is resumed.
+            dismissDialog = true
+
+            // Return the alert dialog.
+            return alertDialog
+        }
+    }
+
+    override fun onResume() {
+        // Run the default commands.
+        super.onResume()
+
+        // Dismiss the alert dialog if the activity was restarted as a new one will automatically be created by GetSourceBackgroundTask.
+        if (dismissDialog) {
+            dialog!!.dismiss()
+        }
+    }
+}
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