From 00b10ed048cc1f6490e7ca3e0530dd4471ca5a40 Mon Sep 17 00:00:00 2001
From: Arne Schwabe <arne@rfc2549.org>
Date: Wed, 27 May 2020 13:39:55 +0200
Subject: Implement internal webview for authenticating when OPEN_URL is used

---
 .../blinkt/openvpn/activities/InternalWebView.kt   | 99 ++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 main/src/ui/java/de/blinkt/openvpn/activities/InternalWebView.kt

(limited to 'main/src/ui/java/de/blinkt/openvpn/activities/InternalWebView.kt')

diff --git a/main/src/ui/java/de/blinkt/openvpn/activities/InternalWebView.kt b/main/src/ui/java/de/blinkt/openvpn/activities/InternalWebView.kt
new file mode 100644
index 00000000..2bad9e81
--- /dev/null
+++ b/main/src/ui/java/de/blinkt/openvpn/activities/InternalWebView.kt
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2012-2020 Arne Schwabe
+ * Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
+ */
+
+package de.blinkt.openvpn.activities
+
+import android.annotation.SuppressLint
+import android.annotation.TargetApi
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import android.util.Log
+import android.webkit.JavascriptInterface
+import android.webkit.WebResourceRequest
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import android.widget.TextView
+import androidx.annotation.RequiresApi
+import androidx.appcompat.app.AppCompatActivity
+import de.blinkt.openvpn.R
+import de.blinkt.openvpn.VpnProfile
+import org.json.JSONObject
+
+class InternalWebView : AppCompatActivity() {
+
+    lateinit var webView: WebView
+    lateinit var urlTextView: TextView
+
+    @SuppressLint("SetJavaScriptEnabled")
+    override fun onCreate(savedInstanceState: Bundle?) {
+
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.webview_internal)
+
+        webView = findViewById(R.id.internal_webview)
+        urlTextView = findViewById(R.id.url_textview)
+
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
+            attachMessageHandler()
+
+        webView.loadUrl(intent.data.toString())
+
+        webView.settings.javaScriptEnabled = true
+        webView.settings.userAgentString = VpnProfile.getVersionEnvString(this)
+
+        webView.webViewClient = object: WebViewClient() {
+            @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
+            override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
+                urlTextView.text = request?.url?.toString();
+                return super.shouldOverrideUrlLoading(view, request)
+            }
+
+        }
+        urlTextView.text =  intent.data.toString()
+
+        setTitle(R.string.internal_web_view)
+
+    }
+
+    @JavascriptInterface
+    fun postMessage(json: String?, transferList: String?): Boolean {
+        val jObejct = JSONObject(json)
+
+        val action = jObejct.getString("type")
+        Log.i("OpenVPN,InternalWebview", json + " ---- " + transferList)
+
+        if (action == "ACTION_REQUIRED") {
+            // Should show the hidden webview, nothing for us to do
+            return true
+        }
+
+        if (action == "CONNECT_SUCCESS" || action == "CONNECT_FAILED") {
+            runOnUiThread({finish()})
+        }
+
+        /* runOnUiThread({
+            Toast.makeText(this, json + " ---- " + transferList, Toast.LENGTH_LONG).show()
+        }) */
+        return true
+    }
+
+
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
+    private fun attachMessageHandler() {
+        webView.addJavascriptInterface(this, "appEvent")
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+
+    }
+}
\ No newline at end of file
-- 
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