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1
28 package net.sf.jguard.example.swing.dialog;
29
30 import java.awt.BorderLayout  ;
31 import java.awt.Dimension ;
32 import java.awt.Frame ;
33 import java.awt.GridLayout ;
34 import java.awt.event.ActionEvent ;
35 import java.awt.event.ActionListener ;
36 import java.io.BufferedReader ;
37 import java.io.FileReader ;
38 import java.io.IOException ;
39 import java.security.AccessController ;
40 import java.security.PrivilegedActionException ;
41 import java.security.PrivilegedExceptionAction ;
42
43 import javax.security.auth.Subject ;
44 import javax.swing.JButton ;
45 import javax.swing.JDialog ;
46 import javax.swing.JFileChooser ;
47 import javax.swing.JLabel ;
48 import javax.swing.JOptionPane ;
49 import javax.swing.JPanel ;
50 import javax.swing.JTextField ;
51
52 import net.sf.jguard.core.authorization.policy.AccessControlContextUtils;
53
54 import org.apache.log4j.Logger;
55
56
61 public class CheckPermissionDialog extends JDialog {
62
63 private static final Logger logger = Logger
64 .getLogger(CheckPermissionDialog.class);
65
66 private static final long serialVersionUID = -7641435710653804135L;
67
68 private Subject subject;
69
70 private JTextField fileTxtField;
71
72 public CheckPermissionDialog(Frame parentFrame,Subject subject){
73 super(parentFrame,"Check Permission Dialog",true);
74 this.subject = subject;
75
76 this.setLayout(new BorderLayout ());
77
78 JPanel informationPanel = new JPanel ();
79 GridLayout informationLayout = new GridLayout (1,3);
80 informationPanel.setLayout(informationLayout);
81
82 JLabel fileLabel = new JLabel (" filepath :");
83 fileTxtField = new JTextField (100);
84 fileTxtField.setColumns(100);
85
86 JButton browseButton = new JButton ("browse ...");
87 browseButton.addActionListener(new ActionListener (){
88 public void actionPerformed(ActionEvent evt){
89 handleBrowse();
90 }
91 });
92 informationPanel.add(fileLabel);
93 informationPanel.add(fileTxtField);
94 informationPanel.add(browseButton);
95
96 informationPanel.setPreferredSize(new Dimension (450,20));
97
98 JPanel validationPanel=new JPanel ();
99
100 JButton tryButton = new JButton ("try");
101 tryButton.addActionListener(new ActionListener (){
102 public void actionPerformed(ActionEvent e){
103 handleTry();
104 }
105 });
106
107 validationPanel.add(tryButton);
108
109
110 this.add(informationPanel,BorderLayout.CENTER);
111 this.add(validationPanel,BorderLayout.SOUTH);
112
113 this.pack();
114 this.setResizable(false);
115 this.setLocation(parentFrame.getLocation().x,parentFrame.getLocation().y);
116 this.setVisible(true);
117 }
118
119
120 private void handleTry(){
121
122 final String filePath = fileTxtField.getText();
123 try{
124 AccessController.doPrivileged(new PrivilegedExceptionAction () {
127 public Object run() throws SecurityException , IOException {
128
129 BufferedReader br = new BufferedReader (new FileReader (filePath));
130 br.readLine();
131 br.close();
132
133 return null;
134 }
135 },AccessControlContextUtils.getStackSubjectAccessControlContext(subject));
136
137 JOptionPane.showMessageDialog(this,"You have the permissions to do that","permission allowed",JOptionPane.INFORMATION_MESSAGE);
138
139 }catch(SecurityException e){
140 logger.error("Logged subject has no permission to read this file",e);
141 JOptionPane.showMessageDialog(this,"You don't have the permissions to do that ","permission denied",JOptionPane.ERROR_MESSAGE);
142 } catch (PrivilegedActionException e) {
143 logger.error("PrivilegedActionException ioException",e);
144 JOptionPane.showMessageDialog(this,"You don't have the permissions to do that ","permission denied",JOptionPane.ERROR_MESSAGE);
145 }
146 }
147
148
149 private void handleBrowse(){
150
151 JFileChooser fileChooser = new JFileChooser ();
152 int state = fileChooser.showOpenDialog(this);
153 if(state == JFileChooser.APPROVE_OPTION){
154 String selectedPath = fileChooser.getSelectedFile().getAbsolutePath();
155 fileTxtField.setText(selectedPath);
156 }
157
158 }
159 }
160 |
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