From 564e55385fd147d45e88d96a5a8e925d46fc59d3 Mon Sep 17 00:00:00 2001
From: DF1E <dnielfe@gmail.com>
Date: Thu, 2 Oct 2014 18:25:12 +0200
Subject: [PATCH] update LinuxShell from SimpleExplorer

https://github.com/DF1E/SimpleExplorer/blob/master/src/com/dnielfe/manager/commands/RootCommands.java
---
 .../turboeditor/util/LinuxShell.java          | 104 +++++-------------
 .../turboeditor/util/RootUtils.java           |   3 +-
 2 files changed, 28 insertions(+), 79 deletions(-)

diff --git a/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/LinuxShell.java b/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/LinuxShell.java
index f9cfe8a..6e65d7e 100644
--- a/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/LinuxShell.java
+++ b/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/LinuxShell.java
@@ -38,35 +38,40 @@ import java.io.BufferedReader;
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import android.util.Log;
 
 public class LinuxShell {
-    public static String getCmdPath(String path) {
-        return path.replace(" ", "\\ ").replace("'", "\\'");
+
+    private static final String UNIX_ESCAPE_EXPRESSION = "(\\(|\\)|\\[|\\]|\\s|\'|\"|`|\\{|\\}|&|\\\\|\\?)";
+
+    public static String getCommandLineString(String input) {
+        return input.replaceAll(UNIX_ESCAPE_EXPRESSION, "\\\\$1");
     }
 
-    /**
-     * 返回执行完��?的结果
-     *
-     * @param cmd 命令内容
-     * @return
-     */
     public static BufferedReader execute(String cmd) {
-        BufferedReader reader = null; //errReader = null;
+        BufferedReader reader = null;
         try {
             Process process = Runtime.getRuntime().exec("su");
-            DataOutputStream os = new DataOutputStream(process.getOutputStream());
-            //os.writeBytes("mount -oremount,rw /dev/block/mtdblock3 /system\n");
-            //os.writeBytes("busybox cp /data/data/com.koushikdutta.superuser/su /system/bin/su\n");
+            DataOutputStream os = new DataOutputStream(
+                    process.getOutputStream());
             os.writeBytes(cmd + "\n");
             os.writeBytes("exit\n");
-            reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
-            String err = (new BufferedReader(new InputStreamReader(process.getErrorStream()))).readLine();
+            reader = new BufferedReader(new InputStreamReader(
+                    process.getInputStream()));
+            String err = (new BufferedReader(new InputStreamReader(
+                    process.getErrorStream()))).readLine();
             os.flush();
 
-            if (process.waitFor() != 0 || (!"".equals(err) && null != err)) {
+            if (process.waitFor() != 0 || (!"".equals(err) && null != err)
+                    && containsIllegals(err) != true) {
+                Log.e("Root Error, cmd: " + cmd, err);
                 return null;
             }
             return reader;
+
         } catch (IOException e) {
             e.printStackTrace();
         } catch (InterruptedException e) {
@@ -74,69 +79,14 @@ public class LinuxShell {
         } catch (Exception e) {
             e.printStackTrace();
         }
-
         return null;
     }
-    
-    /*public static boolean isRoot()
-    {
-        boolean retval = false;
-        Process suProcess;
-        
-        try
-        {
-          suProcess = Runtime.getRuntime().exec("su");
-          
-          DataOutputStream os = 
-              new DataOutputStream(suProcess.getOutputStream());
-          DataInputStream osRes = 
-              new DataInputStream(suProcess.getInputStream());
-          
-          if (null != os && null != osRes)
-          {
-            // Getting the id of the current user to check if this is root
-            os.writeBytes("id\n");
-            os.flush();
 
-            String currUid = osRes.readLine();
-            boolean exitSu = false;
-            if (null == currUid)
-            {
-              retval = false;
-              exitSu = false;
-              Log.e("ROOT", "Can't get root access or denied by user");
-            }
-            else if (true == currUid.contains("uid=0"))
-            {
-              retval = true;
-              exitSu = true;
-            }
-            else
-            {
-              retval = false;
-              exitSu = true;
-              Log.e("ROOT", "Root access rejected: " + currUid);
-            }
-
-            if (exitSu)
-            {
-              os.writeBytes("exit\n");
-              os.flush();
-            }
-          }
-        }
-        catch (Exception e)
-        {
-          // Can't get root !
-          // Probably broken pipe exception on trying to write to output
-          // stream after su failed, meaning that the device is not rooted
-          
-          retval = false;
-          Log.d("ROOT", "Root access rejected [" +
-                e.getClass().getName() + "] : " + e.getMessage());
-        }
-
-        return retval;
-    }*/
+    public static boolean containsIllegals(String toExamine) {
+        // checks for "+" sign so the program doesn't throw an error when its
+        // not erroring.
+        Pattern pattern = Pattern.compile("[+]");
+        Matcher matcher = pattern.matcher(toExamine);
+        return matcher.find();
+    }
 }
-
diff --git a/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/RootUtils.java b/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/RootUtils.java
index e60f59d..b1d7654 100644
--- a/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/RootUtils.java
+++ b/libraries/sharedCode/src/main/java/sharedcode/turboeditor/util/RootUtils.java
@@ -80,8 +80,7 @@ public class RootUtils {
         } else {
             BufferedReader reader = null; //errReader = null;
             try {
-
-                reader = LinuxShell.execute("IFS='\n';CURDIR='" + LinuxShell.getCmdPath(path) + "';for i in `ls $CURDIR`; do if [ -d $CURDIR/$i ]; then echo \"d $CURDIR/$i\";else echo \"f $CURDIR/$i\"; fi; done");
+                LinuxShell.execute("ls -a " + LinuxShell.getCommandLineString(path));
                 if (reader == null)
                     return null;