package se.leap.leapclient; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.math.BigInteger; import java.io.InputStream; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.cert.CertificateException; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import org.json.JSONException; import org.json.JSONObject; import android.content.Context; import android.content.SharedPreferences; import android.os.Environment; /** * Stores constants, and implements auxiliary methods used across all LEAP Android classes. * * @author parmegv * @author MeanderingCode * */ public class ConfigHelper { public static SharedPreferences shared_preferences; private static KeyStore keystore_trusted; final public static String DOWNLOAD_JSON_FILES_BUNDLE_EXTRA = "downloadJSONFiles", UPDATE_PROVIDER_DOTJSON = "updateProviderDotJSON", DOWNLOAD_NEW_PROVIDER_DOTJSON = "downloadNewProviderDotJSON", LOG_IN_DIALOG = "logInDialog", NEW_PROVIDER_DIALOG = "logInDialog", SRP_REGISTER = "srpRegister", SRP_AUTH = "srpAuth", M1_KEY = "M1", M2_KEY = "M2", LOG_IN = "logIn", LOG_OUT = "logOut", DOWNLOAD_CERTIFICATE = "downloadUserAuthedCertificate", API_VERSION_KEY = "api_version", RESULT_KEY = "result", RECEIVER_KEY = "receiver", PROVIDER_KEY = "provider", SERVICE_KEY = "service", ALLOWED_ANON = "allow_anonymous", MAIN_CERT_KEY = "main_cert", CERT_KEY = "cert", KEY_KEY = "key", EIP_SERVICE_KEY = "eip", TYPE_OF_CERTIFICATE = "type_of_certificate", ANON_CERTIFICATE = "anon_certificate", AUTHED_CERTIFICATE = "authed_certificate", SALT_KEY = "salt", SESSION_ID_COOKIE_KEY = "session_id_cookie_key", SESSION_ID_KEY = "session_id", PREFERENCES_KEY = "LEAPPreferences", USER_DIRECTORY = "leap_android", PROVIDER_NAME = "provider_name", PROVIDER_MAIN_URL = "provider_main_url", PROVIDER_JSON_URL = "provider_json_url", CUSTOM = "custom", DANGER_ON = "danger_on", API_URL_KEY = "api_uri", USERNAME_KEY = "username", PASSWORD_KEY = "password", ALLOW_REGISTRATION_KEY = "allow_registration", EIP_SERVICE_API_PATH = "config/eip-service.json", ERRORS_KEY = "errors", RECEIVER_TAG = "receiverTag", REQUEST_TAG = "requestTag"; ; final public static String NG_1024 = "eeaf0ab9adb38dd69c33f80afa8fc5e86072618775ff3c0b9ea2314c9c256576d674df7496ea81d3383b4813d692c6e0e0d5d8e250b98be48e495c1d6089dad15dc7d7b46154d6b6ce8ef4ad69b15d4982559b297bcf1885c529f566660e57ec68edbc3c05726cc02fd4cbf4976eaa9afd5138fe8376435b9fc61d2fc0eb06e3"; final public static BigInteger G = new BigInteger("2"); final public static int CUSTOM_PROVIDER_ADDED = 0, CORRECTLY_DOWNLOADED_JSON_FILES = 1, INCORRECTLY_DOWNLOADED_JSON_FILES = 2, SRP_AUTHENTICATION_SUCCESSFUL = 3, SRP_AUTHENTICATION_FAILED = 4, SRP_REGISTRATION_SUCCESSFUL = 5, SRP_REGISTRATION_FAILED = 6, LOGOUT_SUCCESSFUL = 7, LOGOUT_FAILED = 8, CORRECTLY_DOWNLOADED_CERTIFICATE = 9, INCORRECTLY_DOWNLOADED_CERTIFICATE = 10, CORRECTLY_UPDATED_PROVIDER_DOT_JSON = 11, INCORRECTLY_UPDATED_PROVIDER_DOT_JSON = 12, CORRECTLY_DOWNLOADED_ANON_CERTIFICATE = 13, INCORRECTLY_DOWNLOADED_ANON_CERTIFICATE = 14 ; private static boolean checkSharedPrefs() { try { shared_preferences = Dashboard.getAppContext().getSharedPreferences(PREFERENCES_KEY,Context.MODE_PRIVATE); } catch (Exception e) { return false; } return true; } /** * Saves a JSON object into class scope Shared Preferences * @param shared_preferences_key * @param content */ public static void saveSharedPref(String shared_preferences_key, JSONObject content) { SharedPreferences.Editor shared_preferences_editor = shared_preferences .edit(); shared_preferences_editor.putString(shared_preferences_key, content.toString()); shared_preferences_editor.commit(); } /** * Saves a String object into class scope Shared Preferences * @param shared_preferences_key * @param content */ public static void saveSharedPref(String shared_preferences_key, String content) { SharedPreferences.Editor shared_preferences_editor = shared_preferences .edit(); shared_preferences_editor.putString(shared_preferences_key, content); shared_preferences_editor.commit(); } /** * Saves a boolean object into class scope Shared Preferences * @param shared_preferences_key * @param content */ public static void saveSharedPref(String shared_preferences_key, boolean content) { SharedPreferences.Editor shared_preferences_editor = shared_preferences .edit(); shared_preferences_editor.putBoolean(shared_preferences_key, content); shared_preferences_editor.commit(); } /** * Gets String object from class scope Shared Preferences * @param shared_preferences_key * @return the string correspondent to the key parameter */ public static String getStringFromSharedPref(String shared_preferences_key) { String content = null; if ( checkSharedPrefs() ) { content = shared_preferences.getString(shared_preferences_key, ""); } return content; } /** * Gets JSON object from class scope Shared Preferences * @param shared_preferences_key * @return the JSON object correspondent to the key parameter */ public static JSONObject getJsonFromSharedPref(String shared_preferences_key) throws JSONException { JSONObject content = null; if ( checkSharedPrefs() ) { content = new JSONObject( shared_preferences.getString(shared_preferences_key, "") ); } return content; } /* * This method defaults to false. * If you use this method, be sure to fail-closed on false! * TODO This is obviously less than ideal...solve it! */ public static boolean getBoolFromSharedPref(String shared_preferences_key) { boolean value = false; if ( checkSharedPrefs() ) { value = shared_preferences.getBoolean(shared_preferences_key, false); } return value; } /** * Opens a FileInputStream from the user directory of the external storage directory. * @param filename * @return a file input stream */ public static FileInputStream openFileInputStream(String filename) { FileInputStream input_stream = null; File root = Environment.getExternalStorageDirectory(); File leap_dir = new File(root.getAbsolutePath() + File.separator + USER_DIRECTORY); try { input_stream = new FileInputStream(leap_dir + File.separator + filename); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } return input_stream; } /** * Treat the input as the MSB representation of a number, * and lop off leading zero elements. For efficiency, the * input is simply returned if no leading zeroes are found. * * @param in array to be trimmed */ public static byte[] trim(byte[] in) { if(in.length == 0 || in[0] != 0) return in; int len = in.length; int i = 1; while(in[i] == 0 && i < len) ++i; byte[] ret = new byte[len - i]; System.arraycopy(in, i, ret, 0, len - i); return ret; } /** * Sets class scope Shared Preferences * @param shared_preferences */ public static void setSharedPreferences( SharedPreferences shared_preferences) { ConfigHelper.shared_preferences = shared_preferences; } /** * Adds a new X509 certificate given its input stream and its provider name * @param provider used to store the certificate in the keystore * @param inputStream from which X509 certificate must be generated. */ public static void addTrustedCertificate(String provider, InputStream inputStream) { CertificateFactory cf; try { cf = CertificateFactory.getInstance("X.509"); X509Certificate cert = (X509Certificate)cf.generateCertificate(inputStream); keystore_trusted.setCertificateEntry(provider, cert); } catch (CertificateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (KeyStoreException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * Adds a new X509 certificate given in its string from and using its provider name * @param provider used to store the certificate in the keystore * @param certificate */ public static void addTrustedCertificate(String provider, String certificate) { String filename_to_save = provider + "_certificate.cer"; CertificateFactory cf; try { cf = CertificateFactory.getInstance("X.509"); X509Certificate cert = (X509Certificate)cf.generateCertificate(openFileInputStream(filename_to_save)); if(keystore_trusted == null) { keystore_trusted = KeyStore.getInstance("BKS"); keystore_trusted.load(null); } keystore_trusted.setCertificateEntry(provider, cert); } catch (CertificateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (KeyStoreException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchAlgorithmException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * @return class wide keystore */ public static KeyStore getKeystore() { return keystore_trusted; } }