Display SSL information in View Headers. https://redmine.stoutner.com/issues/706

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

diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/ViewHeadersDetailDialog.kt b/app/src/main/java/com/stoutner/privacybrowser/dialogs/ViewHeadersDetailDialog.kt
new file mode 100644 (file)
index 0000000..11d2e75
--- /dev/null
+++ b/app/src/main/java/com/stoutner/privacybrowser/dialogs/ViewHeadersDetailDialog.kt
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2023 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser Android <https://www.stoutner.com/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 <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.dialogs
+
+import android.app.Dialog
+import android.graphics.Typeface
+import android.os.Bundle
+import android.text.SpannableStringBuilder
+import android.text.Spanned
+import android.text.style.StyleSpan
+import android.view.WindowManager
+
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+import androidx.preference.PreferenceManager
+
+import com.stoutner.privacybrowser.R
+
+// Define the public class constants.
+const val AVAILABLE_CIPHERS = 0
+const val SSL_CERTIFICATE = 1
+
+// Define the private class constants.
+private const val DIALOG_TYPE = "A"
+private const val MESSAGE = "B"
+private const val APPLIED_CIPHER_STRING = "C"
+
+class ViewHeadersDetailDialog : DialogFragment() {
+    companion object {
+        fun displayDialog(dialogType: Int, message: String, appliedCipherString: String = ""): ViewHeadersDetailDialog {
+            // Create an arguments bundle.
+            val argumentsBundle = Bundle()
+
+            // Store the SSL error message components in the bundle.
+            argumentsBundle.putInt(DIALOG_TYPE, dialogType)
+            argumentsBundle.putString(MESSAGE, message)
+            argumentsBundle.putString(APPLIED_CIPHER_STRING, appliedCipherString)
+
+            // Create a new instance of the SSL certificate error dialog.
+            val thisHeadersSslCertificateDialog = ViewHeadersDetailDialog()
+
+            // Add the arguments bundle to the new dialog.
+            thisHeadersSslCertificateDialog.arguments = argumentsBundle
+
+            // Return the new dialog.
+            return thisHeadersSslCertificateDialog
+        }
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        // Get the arguments from the bundle.
+        val dialogType = requireArguments().getInt(DIALOG_TYPE)
+        val message = requireArguments().getString(MESSAGE)!!
+        val appliedCipherString = requireArguments().getString(APPLIED_CIPHER_STRING)!!
+
+        // Use a builder to create the alert dialog.
+        val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
+
+        // Set the icon according to the theme.
+        dialogBuilder.setIcon(R.drawable.ssl_certificate)
+
+        // Set the title and message according to the type.
+        if (dialogType == AVAILABLE_CIPHERS) {  // A cipher suite dialog is displayed.
+            // Set the title
+            dialogBuilder.setTitle(R.string.available_ciphers)
+
+            // Create a message spannable string builder with the applied cipher bolded.
+            val messageSpannableStringBuilder = SpannableStringBuilder(message)
+
+            // Get the applied cipher index.
+            val appliedCipherIndex = message.indexOf(appliedCipherString)
+
+            // Set the applied cipher to be bold.
+            messageSpannableStringBuilder.setSpan(StyleSpan(Typeface.BOLD), appliedCipherIndex, appliedCipherIndex + appliedCipherString.length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+
+            // Set the message.
+            dialogBuilder.setMessage(messageSpannableStringBuilder)
+        } else {  // An SSL certificate dialog is displayed.
+            // Set the title and message.
+            dialogBuilder.setTitle(R.string.ssl_certificate)
+            dialogBuilder.setMessage(message)
+        }
+
+        // Set the close button listener.  Using `null` as the listener closes the dialog without doing anything else.
+        dialogBuilder.setNegativeButton(R.string.close, null)
+
+        // 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) {
+            alertDialog.window!!.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
+        }
+
+        // Return the alert dialog.
+        return alertDialog
+    }
+}