判断设备是否越狱

- (BOOL) isDeviceJailBroken
{
    BOOL jailbroken = NO;
    NSString *cydiaPath = @"/Applications/Cydia.app";
    NSString *aptPath = @"/private/var/lib/apt/";
    if ([[NSFileManager defaultManager] fileExistsAtPath:cydiaPath]) {
        jailbroken = YES;
    }
    if ([[NSFileManager defaultManager] fileExistsAtPath:aptPath]) {
        jailbroken = YES;
    }
    
    return jailbroken;    
}