[platform] support node upgrade from sdcard

- can upgrade node js from /sdcard/.nodebase/.bin/node

Author: dna2github

app/src/main/java/seven/drawalive/nodebase/NodeBase.java

@@ -3,6 +3,7 @@
 import android.Manifest;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.pm.PermissionInfo;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AlertDialog;
@@ -22,6 +23,7 @@
 import android.widget.Toast;
 
 import java.io.File;
+import java.io.FileInputStream;
 import java.net.InterfaceAddress;
 import java.net.NetworkInterface;
 import java.util.ArrayList;
@@ -55,7 +57,9 @@ protected void onDestroy() {
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
       menu.add(Menu.NONE, 101, Menu.NONE, "NICs");
-      menu.add(Menu.NONE, 102, Menu.NONE, "Reset");
+      menu.add(Menu.NONE, 102, Menu.NONE, "Node Version");
+      menu.add(Menu.NONE, 103, Menu.NONE, "Node Upgrade");
+      menu.add(Menu.NONE, 199, Menu.NONE, "Reset");
       return true;
    }
 
@@ -94,7 +98,13 @@ public boolean onOptionsItemSelected(MenuItem item) {
             builder.setMessage(text).setTitle("NetworkInterface(s)");
             builder.create().show();
             break;
-         case 102: // reset
+         case 102: // Show NodeJS Version
+            show_node_version();
+            break;
+         case 103: // Upgrade NodeJS
+            copy_bin_node_from_nodebase_workdir();
+            break;
+         case 199: // reset
             Log.i("UI:ActionButton", "Update node js binary ...");
             Utils.resetNodeJS(NodeBase.this, getApplicationInfo().dataDir);
             refreshAppList();
@@ -287,6 +297,41 @@ public void stop() {
       private NodeBase _nodebase;
    }
 
+   private void copy_bin_node_from_nodebase_workdir() {
+      String dirname = _txtAppRootDir.getText().toString();
+      String upgrade_node_filename = String.format("%s/.bin/node", dirname);
+      File f = new File(upgrade_node_filename);
+      if (!f.exists()) {
+         AlertDialog.Builder builder = new AlertDialog.Builder(this);
+         builder.setMessage(
+                 String.format("%s does not exists.", upgrade_node_filename)
+         ).setTitle("Upgrade Failed");
+         builder.create().show();
+         return;
+      }
+      try {
+         FileInputStream fr = new FileInputStream(f);
+         Utils.prepareNode(getApplicationInfo().dataDir, fr, true);
+         fr.close();
+      } catch (Exception e) {
+         Log.e("NodeBase:upgrade_node",
+                 "Cannot copy binary file of \"node\"");
+      }
+   }
+
+   private void show_node_version() {
+      String version = NodeBaseServer.nodeVersion(getApplicationInfo().dataDir);
+      String text = null;
+      if (version == null) {
+         text = "NodeJS: (not found)";
+      } else {
+         text = String.format("NodeJS: %s", version);
+      }
+      AlertDialog.Builder builder = new AlertDialog.Builder(this);
+      builder.setMessage(text).setTitle("Node Version");
+      builder.create().show();
+   }
+
    private boolean _permissionSdcard;
 
    // state

app/src/main/java/seven/drawalive/nodebase/NodeBaseServer.java

@@ -5,6 +5,8 @@
 import android.os.IBinder;
 import android.util.Log;
 
+import java.io.InputStream;
+
 
 public class NodeBaseServer extends Service {
 
@@ -83,6 +85,34 @@ private void prepareEnvironment() {
       Utils.resetNodeJS(this, _workdir);
    }
 
+   public static String nodeVersion(String _workdir) {
+      // e.g. cd "/sdcard/.nodebase/apps/test" &&
+      //      /data/seven.drawalive.nodebase/node/node "index.js"
+      String[] cmd;
+      cmd = new String[] {
+              String.format("%s/node/node", _workdir),
+              "--version",
+      };
+      Log.i("Server:NodeVersion", String.format("Command - %s", cmd));
+      try {
+         Process p = Runtime.getRuntime().exec(cmd);
+         p.waitFor();
+         InputStream is = p.getInputStream();
+         byte[] b = new byte[1024];
+         int len = 0;
+         len = is.read(b);
+         is.close();
+         char[] chs = new char[len];
+         for(int i = len-1; i>=0; i--) {
+            chs[i] = (char)b[i];
+         }
+         return String.valueOf(chs);
+      } catch (Exception e) {
+         Log.e("Server:NodeVersion", "Cannot get the version of \"node\"", e);
+         return null;
+      }
+   }
+
    public int startNode(String appdir, String appentry, String appparams) {
       if (!_valid) return -1;
       int result = 0;

app/src/main/java/seven/drawalive/nodebase/Utils.java

@@ -37,10 +37,14 @@ public static boolean prepareNodeDirectories(String workdir) {
    }
 
    public static boolean prepareNode(String workdir, InputStream node_binary) {
+      return prepareNode(workdir, node_binary, false);
+   }
+
+   public static boolean prepareNode(String workdir, InputStream node_binary, boolean force) {
       try {
          String node_filename = String.format("%s/node/node", workdir);
          File node_file = new File(node_filename);
-         if (node_file.exists()) {
+         if (node_file.exists() && !force) {
             return true;
          }
          node_file.createNewFile();