Android - EU Cookie Law

Question

The upcoming Google policy changes, compel us to implement a dialog to notify EU users about cookie/device identifier usage for advertising and analytics. I'd like to show this dialog only to EU users. I don't want to use additional permissions (e.g. android.permission.ACCESS_COARSE_LOCATION). Therefore I have created a function to test for EU users:

Android

boolean showCookieHint()
{
    final SharedPreferences settings = getSharedPreferences("localPreferences", Context.MODE_PRIVATE);
    if (settings.getBoolean("termsAccepted", true)  == false) return false;

    List<String> list = new ArrayList<String>();
    list.add("AT"); //Austria
    list.add("BE"); //Belgium
    list.add("BG"); //Bulgaria
    list.add("HR"); //Croatia
    list.add("CY"); //Cyprus
    list.add("CZ"); //Czech Republic
    list.add("DK"); //Denmark
    list.add("EE"); //Estonia
    list.add("FI"); //Finland
    list.add("FR"); //France
    list.add("GF"); //French Guiana
    list.add("PF"); //French Polynesia
    list.add("TF"); //French Southern Territories
    list.add("DE"); //Germany
    list.add("GR"); //Greece
    list.add("HU"); //Hungary
    list.add("IE"); //Ireland
    list.add("IT"); //Italy
    list.add("LV"); //Latvia
    list.add("LT"); //Lithuania
    list.add("LU"); //Luxembourg
    list.add("MT"); //Malta
    list.add("NL"); //Netherlands
    list.add("PL"); //Poland
    list.add("PT"); //Portugal
    list.add("RO"); //Romania
    list.add("SK"); //Slovakia
    list.add("SI"); //Slovenia
    list.add("ES"); //Spain
    list.add("SE"); //Sweden
    list.add("ES"); //Spain
    list.add("GB"); //United Kingdom of Great Britain and Northern Ireland

    boolean error = false;

    /* is eu sim ? */
    try {
        final TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        String simCountry = tm.getSimCountryIso();
        if (simCountry != null && simCountry.length() == 2) { 
            simCountry = simCountry.toUpperCase();
            for (int i = 0; i < list.size(); ++i) {
                if (list.get(i).equalsIgnoreCase(simCountry) == true) {
                    ASCore.log(TAG, "is EU User (sim)");
                    return true;
                }
            }
        }
    }
    catch (Exception e) { error = true; }


    /* is eu network */
    try {  
        final TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        if (tm.getPhoneType() != TelephonyManager.PHONE_TYPE_CDMA) {
            String networkCountry = tm.getNetworkCountryIso();
            if (networkCountry != null && networkCountry.length() == 2) {
                networkCountry = networkCountry.toUpperCase();
                for (int i = 0; i < list.size(); ++i) {
                    if (list.get(i).equalsIgnoreCase(networkCountry) == true) {
                        ASCore.log(TAG, "is EU User (net)");
                        return true;
                    }
                }
            }
        }
    }
    catch (Exception e) { error = true; }

    /* is eu time zone id */
    try {
        String tz = TimeZone.getDefault().getID().toLowerCase();
        if (tz.length() < 10) {
            error = true;
        } else if (tz.contains("euro") == true) {
            ASCore.log(TAG, "is EU User (time)");
            return true;
        }
    } catch (Exception e) {
        error = true;
    }

    /* is eu time zone id */
    try {
        String tz = TimeZone.getDefault().getID().toLowerCase();
        if (tz.length() < 10) {
            error = true;
        } else if (tz.contains("europe") == true) {
            ASCore.log(TAG, "is EU User (time) ");
            return true;
        }
    } catch (Exception e) {
        error = true;
    }


    if (error == true) {
        ASCore.log(TAG, "is EU User (err)");
        return true;
    }

    return false;
}

iOS

-(bool) showCookieHint {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults boolForKey:@"termsAccepted"]) return false;

CTTelephonyNetworkInfo *network_Info = [CTTelephonyNetworkInfo new];
CTCarrier *carrier = network_Info.subscriberCellularProvider;


std::vector<NSString*> list;
list.push_back(@"AT"); //Austria
list.push_back(@"BE"); //Belgium
list.push_back(@"BG"); //Bulgaria
list.push_back(@"HR"); //Croatia
list.push_back(@"CY"); //Cyprus
list.push_back(@"CZ"); //Czech Republic
list.push_back(@"DK"); //Denmark
list.push_back(@"EE"); //Estonia
list.push_back(@"FI"); //Finland
list.push_back(@"FR"); //France
list.push_back(@"GF"); //French Guiana
list.push_back(@"PF"); //French Polynesia
list.push_back(@"TF"); //French Southern Territories
list.push_back(@"DE"); //Germany
list.push_back(@"GR"); //Greece
list.push_back(@"HU"); //Hungary
list.push_back(@"IE"); //Ireland
list.push_back(@"IT"); //Italy
list.push_back(@"LV"); //Latvia
list.push_back(@"LT"); //Lithuania
list.push_back(@"LU"); //Luxembourg
list.push_back(@"MT"); //Malta
list.push_back(@"NL"); //Netherlands
list.push_back(@"PL"); //Poland
list.push_back(@"PT"); //Portugal
list.push_back(@"RO"); //Romania
list.push_back(@"SK"); //Slovakia
list.push_back(@"SI"); //Slovenia
list.push_back(@"ES"); //Spain
list.push_back(@"SE"); //Sweden
list.push_back(@"ES"); //Spain
list.push_back(@"GB"); //United Kingdom of Great Britain and Northern Ireland

/* is eu sim ? */
NSString* sim = carrier.isoCountryCode;
if (sim != nil) {
    if ([sim length] == 2) {
        NSString* simU = [sim uppercaseString];
        for (int i = 0; i < list.size(); ++i) {
            if ([list[i] compare:simU] == 0) {
                ASCore::log("Core", "is EU User (sim)");
                return true;
            }
        }
    }
}

/* is eu network */
NSString* net = carrier.mobileCountryCode;
if (net != nil) {
    if ([net length] == 2) {
        NSString* netU = [net uppercaseString];
        for (int i = 0; i < list.size(); ++i) {
            if ([list[i] compare:netU] == 0) {
                ASCore::log("Core", "is EU User (net)");
                return true;
            }
        }
    }
}


bool error = false;
/* is local eu time zone id */
NSTimeZone* timeZoneLocal = [NSTimeZone localTimeZone];
NSString* time1 = [[timeZoneLocal name] lowercaseString];
if ([time1 length] > 10) {
    if ([time1 containsString:@"europe"]) {
        ASCore::log("Core", "is EU User (local time)");
        return true;
    }
} else error = true;


/* is default eu time zone id */
NSTimeZone *timeZoneDefault = [NSTimeZone defaultTimeZone];
NSString *time2 = [[timeZoneDefault name] lowercaseString];
if ([time2 length] > 10) {
    if ([time2 containsString:@"europe"]) {
        ASCore::log("Core", "is EU User (default time)");
        return true;
    }
} else error = true;


if (error == true) {
    ASCore::log("Core", "is EU User (err)");
    return true;
}

return false;
}

Is my function enough to detect EU-Users?

Thanks

Ronald

Answer 1

Below is somewhat improved Android code based on Mr. Betatester's answer using enum. I noted that Finland was missing and Spain was mistakenly entered twice. I also removed duplication of the code under /* is eu time zone id */.

private enum EUCountry {
    AT,BE,BG,HR,CY,CZ,DK,EE,FI,FR,DE,GR,HU,IE,IT,LV,LT,LU,MT,NL,PL,PT,RO,SK,SI,ES,SE,GB, //28 member states
    GF,PF,TF, //French territories French Guiana,Polynesia,Southern Territories
    EL,UK,  //alternative EU names for GR and GB
    ME,IS,AL,RS,TR,MK; //candidate countries

    public static boolean contains(String s)
    {
        for (EUCountry eucountry:values())
            if (eucountry.name().equalsIgnoreCase(s))
                return true;
        return false;
    }

};

public static boolean isEU(Activity activity)
{
    boolean error = false;

/* is eu sim */

    try {
        final TelephonyManager tm = (TelephonyManager) activity.getSystemService(Context.TELEPHONY_SERVICE);
        String simCountry = tm.getSimCountryIso();
        if (simCountry != null && simCountry.length() == 2) {
            simCountry = simCountry.toUpperCase();

            if (EUCountry.contains(simCountry)) {
                Log.v(TAG, "is EU User (sim)");
                return true;
            }
        }
    }
    catch (Exception e) { error = true; }


/* is eu network */
    try {
        final TelephonyManager tm = (TelephonyManager) activity.getSystemService(Context.TELEPHONY_SERVICE);
        if (tm.getPhoneType() != TelephonyManager.PHONE_TYPE_CDMA && tm.getPhoneType()!=TelephonyManager.PHONE_TYPE_NONE) {
            String networkCountry = tm.getNetworkCountryIso();
            if (networkCountry != null && networkCountry.length() == 2) {
                networkCountry = networkCountry.toUpperCase();

                if (EUCountry.contains(networkCountry)) {
                    Log.v(TAG, "is EU User (network)");
                    return true;
                }
            }
        }
    }
    catch (Exception e) { error = true; }

/* is eu time zone id */
    try {
        String tz = TimeZone.getDefault().getID().toLowerCase();
        if (tz.length() < 10) {
            error = true;
        } else if (tz.contains("euro")) {
            Log.v(TAG, "is EU User (time)");
            return true;
        }
    } catch (Exception e) {
        error = true;
    }


    if (error == true) {
        Log.v(TAG, "is EU User (err)");
        return true;
    }

    return false;
}