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i have the following function which should to return content of the wpa_supplicant.conf file.

I tried read file by this way:

public static String readTextFile() {
        aBuffer = "";
        try
        {
            Runtime.getRuntime().exec("su");
            Runtime.getRuntime().exec("chmod +x /data/misc/wifi/wpa_supplicant.conf");
            File path= Environment.getDataDirectory();
            File myFile = new File("/data/misc/wifi/wpa_supplicant.conf");
            FileInputStream fIn = new FileInputStream(myFile);
            BufferedReader myReader = new BufferedReader(
                    new InputStreamReader(fIn));
            String aDataRow = "";
            aBuffer = "";
            while ((aDataRow = myReader.readLine()) != null) {
                aBuffer += aDataRow + "\n";
            }
            myReader.close();

        }
        catch (Exception e)
        {
            Logger.e("Cannot read the file");
            Logger.e(e.getMessage());
        }
        return aBuffer;
    }

And i added into manifest file too:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

But when i trying to read the content of the file placed in the:

/data/misc/wifi/wpa_supplicant.conf

I always get the following exception:

 /data/misc/wifi/wpa_supplicant.conf: open failed: EACCES (Permission denied)

Should i use instead of the inputStream Output stred of the shell command? Fxp: 

tail /data/misc/wifi/wpa_supplicant.conf

How can i solve this issue please?

Many thanks for any advice.

redrom
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1 Answers1

-1

Is there a reason you're trying to do it by writing an application?

You're doing su, but that command elevates the privileges in a shell- of which you're not instantiating.. You'd have to run the code AS root. Read the file normally at that point.

Mark S.
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