Detection of armel/armhf

[cjaentsch]

Just a quick question: Right now the respective client library only has to be downloaded and works with it's given filename. But when using an ARMel or ARMhf device the SDK searches for "arm". This is not a problem as we can rename the "armhf" to "arm". I just wanted to ask if this behaviour will stay like that in the future so we'll build an ARM mode detection ourselves which takes the armhf file an renames it.

[cjaentsch]

This is how we implemented ARM detection:

private static Boolean fiskalyDetectArmMode(String mode) {
    Boolean detected = false;

    ProcessBuilder processBuilder = new ProcessBuilder();
    processBuilder.command("bash", "-c", "readelf -a /usr/bin/readelf | grep " + mode);

    try {
        Process process = processBuilder.start();
        StringBuilder output = new StringBuilder();
        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));

        String line;
        while ((line = reader.readLine()) != null) {
            output.append(line + "\n");
        }

        int exitVal = process.waitFor();
        if (exitVal == 0) {
            if (output.toString().contains(mode)) {
                detected = true;
            }
        } else {
            //abnormal...
        }
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    return detected;
}

Called like that:

if (libArchitecture.equals("arm")) {
    if (fiskalyDetectArmMode("armel")) {
        libArchitecture = "armel";
    } else if (fiskalyDetectArmMode("armhf")) {
        libArchitecture = "armhf";
    }
}