org.zaproxy.zap.extension.httppanel.view.hex.HttpPanelHexModel Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of zap Show documentation
Show all versions of zap Show documentation
The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing. ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.
/*
* Zed Attack Proxy (ZAP) and its related class files.
*
* ZAP is an HTTP/HTTPS proxy for assessing web application security.
*
* Copyright 2011 The ZAP Development Team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.zaproxy.zap.extension.httppanel.view.hex;
import java.util.ArrayList;
import java.util.List;
import javax.swing.table.AbstractTableModel;
import org.zaproxy.zap.utils.ByteBuilder;
public class HttpPanelHexModel extends AbstractTableModel {
private static final String[] hexSymbols = {
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"
};
private static final int BITS_PER_HEX_DIGIT = 4;
private static final int COLUMN_COUNT = 34;
private static final long serialVersionUID = 1L;
private List listRow = new ArrayList<>();
private boolean editable = false;
private boolean changed = false;
public boolean isEditable() {
return editable;
}
public void setEditable(boolean editable) {
this.editable = editable;
}
public HttpPanelHexModel() {
super();
}
@Override
public int getColumnCount() {
return COLUMN_COUNT;
}
@Override
public int getRowCount() {
return listRow.size();
}
@Override
public Object getValueAt(int row, int col) {
return listRow.get(row)[col];
}
private boolean isHexColumn(int col) {
return col > 0 && col <= 16;
}
private boolean isCharColumn(int col) {
return col > 17;
}
@Override
public String getColumnName(int col) {
if (isHexColumn(col)) {
return Integer.toHexString(col - 1);
} else if (isCharColumn(col)) {
return Integer.toHexString(col - 18);
}
return "";
}
public static String toHexFromByte(final byte b) {
byte leftSymbol = (byte) ((b >>> BITS_PER_HEX_DIGIT) & 0x0f);
byte rightSymbol = (byte) (b & 0x0f);
return (hexSymbols[leftSymbol] + hexSymbols[rightSymbol]);
}
private String[] newRow() {
String[] row = new String[COLUMN_COUNT];
row[0] = String.format("%08x", (listRow.size() * 16));
return row;
}
private void setHex(String[] row, int index, byte b) {
row[index] = toHexFromByte(b);
row[index + 17] = String.valueOf((char) b);
}
private void setChar(String[] row, int index, char c) {
row[index - 17] = toHexFromByte((byte) c);
row[index] = String.valueOf(c);
}
public synchronized void setData(byte[] body) {
listRow.clear();
if (body.length != 0 || isEditable()) {
int index = 0;
int rowIndex = 0;
String[] row = newRow();
listRow.add(row);
while (index < body.length) {
setHex(row, rowIndex + 1, body[index]);
rowIndex++;
if (rowIndex >= 16) {
row = newRow();
listRow.add(row);
rowIndex = 0;
}
index++;
}
}
this.fireTableDataChanged();
changed = false;
}
public synchronized byte[] getData() {
// Need to implement if/when edit supported
ByteBuilder bb = new ByteBuilder();
for (String[] row : listRow) {
for (int i = 1; i < 17; i++) {
if (row[i] == null || row[i].length() == 0) {
break;
}
bb.append((char) Integer.parseInt(row[i], 16));
}
}
return bb.toByteArray();
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
if (!isEditable()) {
return false;
}
if (!(isHexColumn(columnIndex) || isCharColumn(columnIndex))) {
// Either the index or spacer column
return false;
}
if (rowIndex < listRow.size() - 1) {
// Not the last row, so no problem
return true;
}
String[] row = listRow.get(rowIndex);
if (!isCharColumn(columnIndex)) {
// Previous cell is null - can only edit the first null cell
return (row[columnIndex - 1] != null);
} else if (row[columnIndex - 1] == null && columnIndex != 18) {
// Previous cell is null and it's not the first text cell
return false;
}
return true;
}
@Override
public void setValueAt(Object value, int row, int col) {
String val = (String) value;
byte byteVal = -1;
char charVal = (char) 0;
if (isHexColumn(col)) {
if (val.length() > 2) {
return;
}
try {
byteVal = (byte) Integer.parseInt(val, 16);
} catch (NumberFormatException e) {
return;
}
} else if (isCharColumn(col)) {
if (val.length() != 1) {
return;
}
charVal = val.charAt(0);
} else {
return;
}
String[] cell = listRow.get(row);
if (isHexColumn(col)) {
setHex(cell, col, byteVal);
} else {
setChar(cell, col, charVal);
}
int lastRowChanged = row;
if ((row == listRow.size() - 1) && cell[16] != null) {
// Last cell on last line is used, add a new row
listRow.add(newRow());
lastRowChanged++;
}
fireTableRowsUpdated(row, lastRowChanged);
changed = true;
}
public boolean hasChanged() {
return changed;
}
}