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1   /*
2    * Copyright (C) 2010, Google Inc.
3    * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
4    * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> and others
5    *
6    * This program and the accompanying materials are made available under the
7    * terms of the Eclipse Distribution License v. 1.0 which is available at
8    * https://www.eclipse.org/org/documents/edl-v10.php.
9    *
10   * SPDX-License-Identifier: BSD-3-Clause
11   */
12  
13  package org.eclipse.jgit.awtui;
14  
15  import java.awt.GridBagConstraints;
16  import java.awt.GridBagLayout;
17  import java.awt.Insets;
18  
19  import javax.swing.JLabel;
20  import javax.swing.JOptionPane;
21  import javax.swing.JPanel;
22  import javax.swing.JPasswordField;
23  import javax.swing.JTextField;
24  
25  import org.eclipse.jgit.errors.UnsupportedCredentialItem;
26  import org.eclipse.jgit.transport.ChainingCredentialsProvider;
27  import org.eclipse.jgit.transport.CredentialItem;
28  import org.eclipse.jgit.transport.CredentialsProvider;
29  import org.eclipse.jgit.transport.NetRCCredentialsProvider;
30  import org.eclipse.jgit.transport.URIish;
31  
32  /**
33   * Interacts with the user during authentication by using AWT/Swing dialogs.
34   */
35  public class AwtCredentialsProvider extends CredentialsProvider {
36  	/**
37  	 * Install this implementation as the default.
38  	 */
39  	public static void install() {
40  		final AwtCredentialsProvider c = new AwtCredentialsProvider();
41  		CredentialsProvider cp = new ChainingCredentialsProvider(
42  				new NetRCCredentialsProvider(), c);
43  		CredentialsProvider.setDefault(cp);
44  	}
45  
46  	/** {@inheritDoc} */
47  	@Override
48  	public boolean isInteractive() {
49  		return true;
50  	}
51  
52  	/** {@inheritDoc} */
53  	@Override
54  	public boolean supports(CredentialItem... items) {
55  		for (CredentialItem i : items) {
56  			if (i instanceof CredentialItem.StringType)
57  				continue;
58  
59  			else if (i instanceof CredentialItem.CharArrayType)
60  				continue;
61  
62  			else if (i instanceof CredentialItem.YesNoType)
63  				continue;
64  
65  			else if (i instanceof CredentialItem.InformationalMessage)
66  				continue;
67  
68  			else
69  				return false;
70  		}
71  		return true;
72  	}
73  
74  	/** {@inheritDoc} */
75  	@Override
76  	public boolean get(URIish uri, CredentialItem... items)
77  			throws UnsupportedCredentialItem {
78  		switch (items.length) {
79  		case 0:
80  			return true;
81  		case 1:
82  			final CredentialItem item = items[0];
83  
84  			if (item instanceof CredentialItem.InformationalMessage) {
85  				JOptionPane.showMessageDialog(null, item.getPromptText(),
86  						UIText.get().warning, JOptionPane.INFORMATION_MESSAGE);
87  				return true;
88  
89  			} else if (item instanceof CredentialItem.YesNoType) {
90  				CredentialItem.YesNoType v = (CredentialItem.YesNoType) item;
91  				int r = JOptionPane.showConfirmDialog(null, v.getPromptText(),
92  						UIText.get().warning, JOptionPane.YES_NO_OPTION);
93  				switch (r) {
94  				case JOptionPane.YES_OPTION:
95  					v.setValue(true);
96  					return true;
97  
98  				case JOptionPane.NO_OPTION:
99  					v.setValue(false);
100 					return true;
101 
102 				case JOptionPane.CANCEL_OPTION:
103 				case JOptionPane.CLOSED_OPTION:
104 				default:
105 					return false;
106 				}
107 
108 			} else {
109 				return interactive(uri, items);
110 			}
111 		default:
112 			return interactive(uri, items);
113 		}
114 	}
115 
116 	private static boolean interactive(URIish uri, CredentialItem[] items) {
117 		final GridBagConstraints gbc = new GridBagConstraints(0, 0, 1, 1, 1, 1,
118 				GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
119 				new Insets(0, 0, 0, 0), 0, 0);
120 		final JPanel panel = new JPanel();
121 		panel.setLayout(new GridBagLayout());
122 
123 		final JTextField[] texts = new JTextField[items.length];
124 		for (int i = 0; i < items.length; i++) {
125 			CredentialItem item = items[i];
126 
127 			if (item instanceof CredentialItem.StringType
128 					|| item instanceof CredentialItem.CharArrayType) {
129 				gbc.fill = GridBagConstraints.NONE;
130 				gbc.gridwidth = GridBagConstraints.RELATIVE;
131 				gbc.gridx = 0;
132 				panel.add(new JLabel(item.getPromptText()), gbc);
133 
134 				gbc.fill = GridBagConstraints.HORIZONTAL;
135 				gbc.gridwidth = GridBagConstraints.RELATIVE;
136 				gbc.gridx = 1;
137 				if (item.isValueSecure())
138 					texts[i] = new JPasswordField(20);
139 				else
140 					texts[i] = new JTextField(20);
141 				panel.add(texts[i], gbc);
142 				gbc.gridy++;
143 
144 			} else if (item instanceof CredentialItem.InformationalMessage) {
145 				gbc.fill = GridBagConstraints.NONE;
146 				gbc.gridwidth = GridBagConstraints.REMAINDER;
147 				gbc.gridx = 0;
148 				panel.add(new JLabel(item.getPromptText()), gbc);
149 				gbc.gridy++;
150 
151 			} else {
152 				throw new UnsupportedCredentialItem(uri, item.getPromptText());
153 			}
154 		}
155 
156 		if (JOptionPane.showConfirmDialog(null, panel,
157 				UIText.get().authenticationRequired,
158 				JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE) != JOptionPane.OK_OPTION)
159 			return false; // cancel
160 
161 		for (int i = 0; i < items.length; i++) {
162 			CredentialItem item = items[i];
163 			JTextField f = texts[i];
164 
165 			if (item instanceof CredentialItem.StringType) {
166 				CredentialItem.StringType v = (CredentialItem.StringType) item;
167 				if (f instanceof JPasswordField)
168 					v.setValue(new String(((JPasswordField) f).getPassword()));
169 				else
170 					v.setValue(f.getText());
171 
172 			} else if (item instanceof CredentialItem.CharArrayType) {
173 				CredentialItem.CharArrayType v = (CredentialItem.CharArrayType) item;
174 				if (f instanceof JPasswordField)
175 					v.setValueNoCopy(((JPasswordField) f).getPassword());
176 				else
177 					v.setValueNoCopy(f.getText().toCharArray());
178 			}
179 		}
180 		return true;
181 	}
182 }