1 /*
2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javax.smartcardio;
27
28 import java.util.*;
29
30 /**
31 * A Smart Card terminal, sometimes referred to as a Smart Card Reader.
32 * A CardTerminal object can be obtained by calling
33 * {@linkplain CardTerminals#list}
34 * or {@linkplain CardTerminals#getTerminal CardTerminals.getTerminal()}.
35 *
36 * <p>Note that physical card readers with slots for multiple cards are
37 * represented by one <code>CardTerminal</code> object per such slot.
38 *
39 * @see CardTerminals
40 * @see TerminalFactory
41 *
42 * @since 1.6
43 * @author Andreas Sterbenz
44 * @author JSR 268 Expert Group
45 */
46 public abstract class CardTerminal {
47
48 /**
49 * Constructs a new CardTerminal object.
50 *
51 * <p>This constructor is called by subclasses only. Application should
52 * call {@linkplain CardTerminals#list list()}
53 * or {@linkplain CardTerminals#getTerminal getTerminal()}
54 * to obtain a CardTerminal object.
55 */
56 protected CardTerminal() {
57 // empty
58 }
59
60 /**
61 * Returns the unique name of this terminal.
62 *
63 * @return the unique name of this terminal.
64 */
65 public abstract String getName();
66
67 /**
68 * Establishes a connection to the card.
69 * If a connection has previously established using
70 * the specified protocol, this method returns the same Card object as
71 * the previous call.
72 *
73 * @param protocol the protocol to use ("T=0", "T=1", or "T=CL"), or "*" to
74 * connect using any available protocol.
75 *
76 * @throws NullPointerException if protocol is null
77 * @throws IllegalArgumentException if protocol is an invalid protocol
78 * specification
79 * @throws CardNotPresentException if no card is present in this terminal
80 * @throws CardException if a connection could not be established
81 * using the specified protocol or if a connection has previously been
82 * established using a different protocol
83 * @throws SecurityException if a SecurityManager exists and the
84 * caller does not have the required
85 * {@linkplain CardPermission permission}
86 */
87 public abstract Card connect(String protocol) throws CardException;
88
89 /**
90 * Returns whether a card is present in this terminal.
91 *
92 * @return whether a card is present in this terminal.
93 *
94 * @throws CardException if the status could not be determined
95 */
96 public abstract boolean isCardPresent() throws CardException;
97
98 /**
99 * Waits until a card is present in this terminal or the timeout
100 * expires. If the method returns due to an expired timeout, it returns
101 * false. Otherwise it return true.
102 *
103 * <P>If a card is present in this terminal when this
104 * method is called, it returns immediately.
105 *
106 * @param timeout if positive, block for up to <code>timeout</code>
107 * milliseconds; if zero, block indefinitely; must not be negative
108 * @return false if the method returns due to an expired timeout,
109 * true otherwise.
110 *
111 * @throws IllegalArgumentException if timeout is negative
112 * @throws CardException if the operation failed
113 */
114 public abstract boolean waitForCardPresent(long timeout) throws CardException;
115
116 /**
117 * Waits until a card is absent in this terminal or the timeout
118 * expires. If the method returns due to an expired timeout, it returns
119 * false. Otherwise it return true.
120 *
121 * <P>If no card is present in this terminal when this
122 * method is called, it returns immediately.
123 *
124 * @param timeout if positive, block for up to <code>timeout</code>
125 * milliseconds; if zero, block indefinitely; must not be negative
126 * @return false if the method returns due to an expired timeout,
127 * true otherwise.
128 *
129 * @throws IllegalArgumentException if timeout is negative
130 * @throws CardException if the operation failed
131 */
132 public abstract boolean waitForCardAbsent(long timeout) throws CardException;
133
134 }