Source Code Cross Referenced for JUMPFileInstaller.java in  » 6.0-JDK-Modules » j2me » com » sun » midp » jump » installer » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.midp.jump.installer 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
004:         * 
005:         * This program is free software; you can redistribute it and/or
006:         * modify it under the terms of the GNU General Public License version
007:         * 2 only, as published by the Free Software Foundation.
008:         * 
009:         * This program is distributed in the hope that it will be useful, but
010:         * WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012:         * General Public License version 2 for more details (a copy is
013:         * included at /legal/license.txt).
014:         * 
015:         * You should have received a copy of the GNU General Public License
016:         * version 2 along with this work; if not, write to the Free Software
017:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
018:         * 02110-1301 USA
019:         * 
020:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
021:         * Clara, CA 95054 or visit www.sun.com if you need additional
022:         * information or have any questions.
023:         */
024:
025:        package com.sun.midp.jump.installer;
026:
027:        import java.io.ByteArrayOutputStream;
028:        import java.io.IOException;
029:        import javax.microedition.io.ConnectionNotFoundException;
030:        import javax.microedition.io.Connector;
031:        import com.sun.midp.configurator.Constants;
032:        import com.sun.midp.installer.InvalidJadException;
033:        import com.sun.midp.io.j2me.storage.RandomAccessStream;
034:        import com.sun.midp.midletsuite.MIDletSuiteLockedException;
035:        import com.sun.midp.security.SecurityToken;
036:        import com.sun.midp.jump.installer.JUMPInstallerInterface;
037:
038:        /**
039:         * An Installer allowing to install a midlet suite from a file.
040:         * If the midlet suite is given by a descriptor file, the jar
041:         * URL specified in the descriptor must have a "file" scheme.
042:         */
043:        public class JUMPFileInstaller extends JUMPInstaller implements 
044:                JUMPInstallerInterface {
045:
046:            /** Number of bytes to read at one time when copying a file. */
047:            private static final int CHUNK_SIZE = 10 * 1024;
048:
049:            /**
050:             * Downloads an application descriptor file from the given URL.
051:             *
052:             * @return a byte array representation of the file or null if not found
053:             *
054:             * @exception IOException is thrown if any error prevents the download
055:             *            of the JAD
056:             */
057:            protected byte[] downloadJAD() throws IOException {
058:                RandomAccessStream jadInputStream;
059:                ByteArrayOutputStream bos = new ByteArrayOutputStream(
060:                        CHUNK_SIZE);
061:                String jadFilename = getUrlPath(state.localJadUrl);
062:
063:                state.beginTransferDataStatus = DOWNLOADING_JAD;
064:                state.transferStatus = DOWNLOADED_1K_OF_JAD;
065:
066:                jadInputStream = new RandomAccessStream();
067:                jadInputStream.connect(jadFilename, Connector.READ);
068:
069:                transferData(jadInputStream.openInputStream(), bos, CHUNK_SIZE);
070:
071:                jadInputStream.close();
072:
073:                return bos.toByteArray();
074:            }
075:
076:            /**
077:             * Downloads an application archive file from the given URL into the
078:             * given file. Automatically handle re-tries.
079:             *
080:             * @param filename name of the file to write. This file resides
081:             *          in the storage area of the given application
082:             *
083:             * @return size of the JAR
084:             *
085:             * @exception IOException is thrown if any error prevents the download
086:             *   of the JAR
087:             */
088:            protected int downloadJAR(String filename) throws IOException {
089:                int jarSize;
090:                RandomAccessStream jarInputStream, jarOutputStream;
091:                String jarFilename = getUrlPath(state.localJarUrl);
092:
093:                // Open source (jar) file
094:                jarInputStream = new RandomAccessStream();
095:                jarInputStream.connect(jarFilename, Connector.READ);
096:
097:                // Open destination (temporary) file
098:                jarOutputStream = new RandomAccessStream();
099:                jarOutputStream.connect(filename,
100:                        RandomAccessStream.READ_WRITE_TRUNCATE);
101:
102:                // transfer data
103:                state.beginTransferDataStatus = DOWNLOADING_JAR;
104:                state.transferStatus = DOWNLOADED_1K_OF_JAR;
105:
106:                jarSize = transferData(jarInputStream.openInputStream(),
107:                        jarOutputStream.openOutputStream(), CHUNK_SIZE);
108:
109:                jarInputStream.close();
110:
111:                return jarSize;
112:            }
113:
114:            /**
115:             * Compares two URLs for equality in sense that they have the same
116:             * scheme, host and path.
117:             *
118:             * @param url1 the first URL for comparision
119:             * @param url2 the second URL for comparision
120:             *
121:             * @return true if the scheme, host and path of the first given url
122:             *              is identical to the scheme, host and path of the second
123:             *              given url; false otherwise
124:             */
125:            protected boolean isSameUrl(String url1, String url2) {
126:                try {
127:                    String defaultScheme = "file";
128:                    String scheme1 = getUrlScheme(url1, defaultScheme);
129:                    String scheme2 = getUrlScheme(url2, defaultScheme);
130:
131:                    if (url1.equals(url2)) {
132:                        return true;
133:                    }
134:                } catch (NullPointerException npe) {
135:                    // no match, fall through
136:                }
137:
138:                return true;
139:            }
140:
141:            /**
142:             * Stops the installation. If installer is not installing then this
143:             * method has no effect. This will cause the install method to
144:             * throw an IOException if the install is not writing the suite
145:             * to storage which is the point of no return.
146:             *
147:             * @return true if the install will stop, false if it is too late
148:             */
149:            public boolean stopInstalling() {
150:
151:                boolean res = super .stopInstalling();
152:                if (!res) {
153:                    return res;
154:                }
155:
156:                /* some additional actions can be added here */
157:
158:                return true;
159:            }
160:
161:            public int verifyAndStoreSuite(String jadSourceUrl,
162:                    String encoding, String tempJadFileName,
163:                    String tempJarFileName, boolean isUpdate)
164:                    throws IOException, InvalidJadException,
165:                    MIDletSuiteLockedException, SecurityException {
166:
167:                return installJad(jadSourceUrl, tempJadFileName,
168:                        tempJarFileName, encoding,
169:                        Constants.INTERNAL_STORAGE_ID, isUpdate, false, null);
170:            }
171:
172:            public int verifyAndStoreSuite(String jarSourceUrl,
173:                    String tempJarFileName, String suiteName, boolean isUpdate)
174:                    throws IOException, InvalidJadException,
175:                    MIDletSuiteLockedException, SecurityException {
176:
177:                return installJar(jarSourceUrl, tempJarFileName, suiteName,
178:                        Constants.INTERNAL_STORAGE_ID, isUpdate, false, null);
179:            }
180:        }
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