From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../classpath/java/util/jar/JarInputStream.java | 200 +++++++++++++++++++++ 1 file changed, 200 insertions(+) create mode 100644 libjava/classpath/java/util/jar/JarInputStream.java (limited to 'libjava/classpath/java/util/jar/JarInputStream.java') diff --git a/libjava/classpath/java/util/jar/JarInputStream.java b/libjava/classpath/java/util/jar/JarInputStream.java new file mode 100644 index 000000000..4de6609a5 --- /dev/null +++ b/libjava/classpath/java/util/jar/JarInputStream.java @@ -0,0 +1,200 @@ +/* JarInputStream.java - InputStream for reading jar files + Copyright (C) 2000, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.util.jar; + +import java.io.IOException; +import java.io.InputStream; +import java.util.zip.ZipEntry; +import java.util.zip.ZipInputStream; + +/** + * InputStream for reading jar files. + * XXX - verification of the signatures in the Manifest file is not yet + * implemented. + * + * @since 1.2 + * @author Mark Wielaard (mark@klomp.org) + */ + +public class JarInputStream extends ZipInputStream +{ + // Fields + + /** The manifest for this file or null when there was no manifest. */ + private Manifest manifest; + + /** The first real JarEntry for this file. Used by readManifest() to store + an entry that isn't the manifest but that should be returned by + getNextEntry next time it is called. Null when no firstEntry was read + while searching for the manifest entry, or when it has already been + returned by getNextEntry(). */ + private JarEntry firstEntry; + + // Constructors + + /** + * Creates a new JarInputStream and tries to read the manifest. + * If such a manifest is present the JarInputStream tries to verify all + * the entry signatures while reading. + * + * @param in InputStream to read the jar from + * @exception IOException when an error occurs when opening or reading + */ + public JarInputStream(InputStream in) throws IOException + { + this(in, true); + } + + /** + * Creates a new JarInputStream and tries to read the manifest. + * If such a manifest is present and verify is true, the JarInputStream + * tries to verify all the entry signatures while reading. + * + * @param in InputStream to read the jar from + * @param verify whether or not to verify the manifest entries + * @exception IOException when an error occurs when opening or reading + */ + public JarInputStream(InputStream in, boolean verify) throws IOException + { + super(in); + readManifest(verify); + } + + // Methods + + /** + * Set the manifest if found. Skips all entries that start with "META-INF/" + * + * @param verify when true (and a Manifest is found) checks the Manifest, + * when false no check is performed + * @exception IOException if an error occurs while reading + */ + private void readManifest(boolean verify) throws IOException + { + firstEntry = (JarEntry) super.getNextEntry(); + while ((firstEntry != null) && + firstEntry.getName().startsWith("META-INF/")) + { + if (firstEntry.getName().equals(JarFile.MANIFEST_NAME)) + { + manifest = new Manifest(this); + } + firstEntry = (JarEntry) super.getNextEntry(); + } + + if (verify) + { + // XXX + } + } + + /** + * Creates a JarEntry for a particular name and consults the manifest + * for the Attributes of the entry. + * Used by ZipEntry.getNextEntry() + * + * @param name the name of the new entry + */ + protected ZipEntry createZipEntry(String name) + { + ZipEntry zipEntry = super.createZipEntry(name); + JarEntry jarEntry = new JarEntry(zipEntry); + if (manifest != null) + { + jarEntry.attr = manifest.getAttributes(name); + } + return jarEntry; + } + + /** + * Returns the Manifest for the jar file or null if there was no Manifest. + */ + public Manifest getManifest() + { + return manifest; + } + + /** + * Returns the next entry or null when there are no more entries. + * Does actually return a JarEntry, if you don't want to cast it yourself + * use getNextJarEntry(). Does not return any entries found + * at the beginning of the ZipFile that are special + * (those that start with "META-INF/"). + * + * @exception IOException if an IO error occurs when reading the entry + */ + public ZipEntry getNextEntry() throws IOException + { + ZipEntry entry; + if (firstEntry != null) + { + entry = firstEntry; + firstEntry = null; + } + else + { + entry = super.getNextEntry(); + } + return entry; + } + + /** + * Returns the next jar entry or null when there are no more entries. + * + * @exception IOException if an IO error occurs when reading the entry + */ + public JarEntry getNextJarEntry() throws IOException + { + return (JarEntry) getNextEntry(); + } + + /** + * XXX + * + * @param buf XXX + * @param off XXX + * @param len XXX + * @return XXX + * @exception IOException XXX + */ + public int read(byte[]buf, int off, int len) throws IOException + { + // XXX if (verify) {} + return super.read(buf, off, len); + } +} -- cgit v1.2.3