+++ /dev/null
-/*
- * Utils.java
- *
- * Copyright (C) 2011 Eric Butler
- *
- * Authors:
- * Eric Butler <eric@codebutler.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.codebutler.farebot;
-
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.content.DialogInterface;
-import android.util.Log;
-import android.view.WindowManager;
-
-import com.codebutler.farebot.card.desfire.DesfireException;
-import com.codebutler.farebot.card.desfire.DesfireFileSettings;
-import com.codebutler.farebot.card.desfire.DesfireProtocol;
-
-import org.w3c.dom.Node;
-
-import java.io.StringWriter;
-import java.util.List;
-
-import javax.xml.transform.OutputKeys;
-import javax.xml.transform.Result;
-import javax.xml.transform.Source;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.stream.StreamResult;
-
-public class Utils {
-
- private static final String TAG = Utils.class.getName();
-
- public static void showError (final Activity activity, Exception ex) {
- Log.e(activity.getClass().getName(), ex.getMessage(), ex);
- new AlertDialog.Builder(activity)
- .setMessage(Utils.getErrorMessage(ex))
- .show();
- }
-
- public static void showErrorAndFinish (final Activity activity, Exception ex) {
- try {
- Log.e(activity.getClass().getName(), Utils.getErrorMessage(ex));
- ex.printStackTrace();
-
- new AlertDialog.Builder(activity)
- .setMessage(Utils.getErrorMessage(ex))
- .setCancelable(false)
- .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
- public void onClick(DialogInterface arg0, int arg1) {
- activity.finish();
- }
- })
- .show();
- } catch (WindowManager.BadTokenException unused) {
- /* Ignore... happens if the activity was destroyed */
- }
- }
-
- public static String getHexString (byte[] b) throws Exception {
- String result = "";
- for (int i=0; i < b.length; i++) {
- result += Integer.toString( ( b[i] & 0xff ) + 0x100, 16).substring( 1 );
- }
- return result;
- }
-
- public static String getHexString (byte[] b, String defaultResult) {
- try {
- return getHexString(b);
- } catch (Exception ex) {
- return defaultResult;
- }
- }
-
- public static byte[] hexStringToByteArray (String s) {
- if ((s.length() % 2) != 0) {
- throw new IllegalArgumentException("Bad input string: " + s);
- }
-
- int len = s.length();
- byte[] data = new byte[len / 2];
- for (int i = 0; i < len; i += 2) {
- data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
- + Character.digit(s.charAt(i+1), 16));
- }
- return data;
- }
-
- /*
- public static byte[] intToByteArray(int value) {
- return new byte[] {
- (byte)(value >>> 24),
- (byte)(value >>> 16),
- (byte)(value >>> 8),
- (byte)value};
- }
- */
-
- public static int byteArrayToInt(byte[] b) {
- return byteArrayToInt(b, 0);
- }
-
- public static int byteArrayToInt(byte[] b, int offset) {
- return byteArrayToInt(b, offset, b.length);
- }
-
- public static int byteArrayToInt(byte[] b, int offset, int length) {
- return (int) byteArrayToLong(b, offset, length);
- }
-
- public static long byteArrayToLong(byte[] b, int offset, int length) {
- if (b.length < length)
- throw new IllegalArgumentException("length must be less than or equal to b.length");
-
- long value = 0;
- for (int i = 0; i < length; i++) {
- int shift = (length - 1 - i) * 8;
- value += (b[i + offset] & 0x000000FF) << shift;
- }
- return value;
- }
-
- public static byte[] byteArraySlice(byte[] b, int offset, int length) {
- byte[] ret = new byte[length];
- for (int i = 0; i < length; i++)
- ret[i] = b[offset+i];
- return ret;
- }
-
- public static String xmlNodeToString (Node node) throws Exception {
- // The amount of code required to do simple things in Java is incredible.
- Source source = new DOMSource(node);
- StringWriter stringWriter = new StringWriter();
- Result result = new StreamResult(stringWriter);
- TransformerFactory factory = TransformerFactory.newInstance();
- Transformer transformer = factory.newTransformer();
- transformer.setOutputProperty(OutputKeys.INDENT, "yes");
- transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
- transformer.setURIResolver(null);
- transformer.transform(source, result);
- return stringWriter.getBuffer().toString();
- }
-
- public static String getErrorMessage (Throwable ex) {
- String errorMessage = ex.getLocalizedMessage();
- if (errorMessage == null)
- errorMessage = ex.getMessage();
- if (errorMessage == null)
- errorMessage = ex.toString();
-
- if (ex.getCause() != null) {
- String causeMessage = ex.getCause().getLocalizedMessage();
- if (causeMessage == null)
- causeMessage = ex.getCause().getMessage();
- if (causeMessage == null)
- causeMessage = ex.getCause().toString();
-
- if (causeMessage != null)
- errorMessage += ": " + causeMessage;
- }
-
- return errorMessage;
- }
-
-
- public static <T> T findInList(List<T> list, Matcher<T> matcher) {
- for (T item : list) {
- if (matcher.matches(item)) {
- return item;
- }
- }
- return null;
- }
-
- public static interface Matcher<T> {
- public boolean matches(T t);
- }
-
- public static int convertBCDtoInteger(byte data) {
- return (((data & (char)0xF0) >> 4) * 10) + ((data & (char)0x0F));
- }
-
- public static int getBitsFromInteger(int buffer, int iStartBit, int iLength) {
- return (buffer >> (iStartBit)) & ((char)0xFF >> (8 - iLength));
- }
-
- /* Based on function from mfocGUI by 'Huuf' (http://www.huuf.info/OV/) */
- public static int getBitsFromBuffer(byte[] buffer, int iStartBit, int iLength) {
- int iEndBit = iStartBit + iLength - 1;
- int iSByte = iStartBit / 8;
- int iSBit = iStartBit % 8;
- int iEByte = iEndBit / 8;
- int iEBit = iEndBit % 8;
-
- if (iSByte == iEByte) {
- return (int)(((char)buffer[iEByte] >> (7 - iEBit)) & ((char)0xFF >> (8 - iLength)));
- } else {
- int uRet = (((char)buffer[iSByte] & (char)((char)0xFF >> iSBit)) << (((iEByte - iSByte - 1) * 8) + (iEBit + 1)));
-
- for (int i = iSByte + 1; i < iEByte; i++) {
- uRet |= (((char)buffer[i] & (char)0xFF) << (((iEByte - i - 1) * 8) + (iEBit + 1)));
- }
-
- uRet |= (((char)buffer[iEByte] & (char)0xFF)) >> (7 - iEBit);
-
- return uRet;
- }
- }
-
-
- public static DesfireFileSettings selectAppFile(DesfireProtocol tag, int appID, int fileID) {
- try {
- tag.selectApp(appID);
- } catch (DesfireException e) {
- Log.w(TAG,"App not found");
- return null;
- }
- try {
- return tag.getFileSettings(fileID);
- } catch (DesfireException e) {
- Log.w(TAG,"File not found");
- return null;
- }
- }
-
- public static boolean arrayContains(int[] arr, int item) {
- for (int i: arr)
- if (i==item)
- return true;
- return false;
- }
-
- public static boolean containsAppFile(DesfireProtocol tag, int appID, int fileID) {
- try {
- tag.selectApp(appID);
- } catch (DesfireException e) {
- Log.w(TAG,"App not found");
- Log.w(TAG, e);
- return false;
- }
- try {
- return arrayContains(tag.getFileList(),fileID);
- } catch (DesfireException e) {
- Log.w(TAG,"File not found");
- Log.w(TAG, e);
- return false;
- }
- }
-}
projects / DHBWCampusApp.git / blobdiff