001: /*
002: *
003: *
004: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006: *
007: * This program is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU General Public License version
009: * 2 only, as published by the Free Software Foundation.
010: *
011: * This program is distributed in the hope that it will be useful, but
012: * WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * General Public License version 2 for more details (a copy is
015: * included at /legal/license.txt).
016: *
017: * You should have received a copy of the GNU General Public License
018: * version 2 along with this work; if not, write to the Free Software
019: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020: * 02110-1301 USA
021: *
022: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023: * Clara, CA 95054 or visit www.sun.com if you need additional
024: * information or have any questions.
025: */
026:
027: package com.sun.midp.publickeystore;
028:
029: import java.io.*;
030: import java.util.*;
031:
032: /**
033: * A read-only public keystore for use with MIDP.
034: */
035: public class PublicKeyStore {
036:
037: /** Holds the all the keys as {@link PublicKeyInfo} objects. */
038: private Vector keyList = null;
039:
040: /**
041: * Constructor for subclasses.
042: */
043: protected PublicKeyStore() {
044: };
045:
046: /**
047: * Constructs a read-only keystore from a serialized keystore created
048: * by {@link PublicKeyStoreBuilder}.
049: * @param in stream to read a keystore serialized by
050: * {@link PublicKeyStoreBuilder#serialize(OutputStream)} from
051: * @exception IOException if the key storage was corrupted
052: */
053: public PublicKeyStore(InputStream in) throws IOException {
054: initPublicKeyStore(in, new Vector());
055: }
056:
057: /**
058: * Constructs a read-only keystore from a serialized keystore created
059: * by {@link PublicKeyStoreBuilder}.
060: * @param in stream to read a keystore serialized by
061: * {@link PublicKeyStoreBuilder#serialize(OutputStream)} from
062: * @param sharedKeyList key list of a subclass
063: * @exception IOException if the key storage was corrupted
064: */
065: public PublicKeyStore(InputStream in, Vector sharedKeyList)
066: throws IOException {
067: initPublicKeyStore(in, sharedKeyList);
068: }
069:
070: /**
071: * Lets this class work with a writeable key list of a subclass.
072: * This is needed because we cannot make the key list in this
073: * class protected for security reasons. This method will only
074: * work if the PublicKeyStore has not been initialized.
075: * @param sharedKeyList key list of a subclass
076: */
077: protected void initPublicKeyStore(Vector sharedKeyList) {
078: if (keyList != null) {
079: return;
080: }
081:
082: keyList = sharedKeyList;
083: }
084:
085: /**
086: * Lets this class work with a writeable key list of a subclass and
087: * initialized that key list from a serialized key list.
088: * This is needed because we cannot make the key list in this
089: * class protected for security reasons. This method will only
090: * work if the PublicKeyStore has not been initialized.
091: * @param sharedKeyList key list of a subclass
092: * @param in stream to read the serialized keystore
093: * @exception IOException if the key storage was corrupted
094: */
095: protected void initPublicKeyStore(InputStream in,
096: Vector sharedKeyList) throws IOException {
097: InputStorage storage = new InputStorage(in);
098: PublicKeyInfo keyInfo;
099:
100: if (keyList != null) {
101: return;
102: }
103:
104: keyList = sharedKeyList;
105: for (;;) {
106: keyInfo = PublicKeyInfo.getKeyFromStorage(storage);
107: if (keyInfo == null)
108: return;
109:
110: keyList.addElement(keyInfo);
111: }
112: }
113:
114: /**
115: * Gets a by number from the keystore. 0 is the first key.
116: *
117: * @param number number of key
118: *
119: * @return public key information of the key
120: *
121: * @exception ArrayIndexOutOfBoundsException if an invalid number was
122: * given.
123: */
124: public synchronized PublicKeyInfo getKey(int number) {
125: return (PublicKeyInfo) keyList.elementAt(number);
126: }
127:
128: /**
129: * Finds a CAs Public keys based on the distinguished name.
130: *
131: * @param owner distinguished name of keys' owner
132: * @return public key information of the keys
133: */
134: public synchronized Vector findKeys(String owner) {
135: PublicKeyInfo keyInfo;
136: Vector keys = null;
137:
138: for (int i = 0; i < keyList.size(); i++) {
139: keyInfo = (PublicKeyInfo) keyList.elementAt(i);
140: if (keyInfo.getOwner().compareTo(owner) == 0) {
141: if (keys == null) {
142: keys = new Vector();
143: }
144:
145: keys.addElement(keyInfo);
146: }
147: }
148:
149: return keys;
150: }
151:
152: /**
153: * Gets the number of keys in the store.
154: * @return number of keys in the keystore
155: */
156: public synchronized int numberOfKeys() {
157: return keyList.size();
158: }
159: }
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