--- a/jdk/src/share/classes/sun/security/util/SignatureFileManifest.java Mon May 02 09:36:49 2011 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,251 +0,0 @@
-/*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.security.util;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Arrays;
-import java.util.jar.Attributes;
-import java.util.jar.Manifest;
-
-/**
- * This class provides streaming mode reading of manifest files.
- * Used by {@link SignatureFileVerifier}.
- */
-class SignatureFileManifest extends Manifest {
-
- /*
- * Reading a manifest into this object by calling update(byte[]) on chunks.
- * During the reading, the bytes are saved in (@code current} until a line
- * is complete and the key-value pair is saved in {@code currentAttr}. When
- * a section is complete, {@code consumeAttr} is called to merge
- * {@code currentAttr} into main attributes or a named entry.
- */
-
- // Internal state during update() style reading
- // 0. not in update mode
- // 1, in update mode but main attributes not completed yet
- // 2. main attributes completed, still reading the entries
- private int state = 0;
-
- // The partial line read
- private byte[] current;
-
- // Number of bytes in current
- private int currentPos = 0;
-
- // The current Attribute
- private Attributes currentAttr;
-
- /**
- * Reads a manifest in chunks.
- * <p>
- * This method must be called in a row, reading chunks from a single
- * manifest file by order. After all chunks are read, caller must call
- * {@code update(null)} to fully consume the manifest.
- * <p>
- * The entry names and attributes read will be merged in with the current
- * manifest entries. The {@link #read} method cannot be called inside a
- * row of update calls.
- * <p>
- * Along with the calls, caller can call {@link #getMainAttributes()},
- * {@link #getAttributes(java.lang.String)} or {@link #getEntries()}
- * to get already available contents. However, in order not to return
- * partial result, when the main attributes in the new manifest is not
- * consumed completely, {@link #getMainAttributes()} throws an
- * {@code IllegalStateException}. When a certain named entry is not
- * consumed completely, {@link #getAttributes(java.lang.String)}
- * returns the old {@code Attributes} for the name (if it exists).
- *
- * @param data null for last call, otherwise, feeding chunks
- * @param offset offset into data to begin read
- * @param length length of data after offset to read
- * @exception IOException if an I/O error has occurred
- * @exception IllegalStateException if {@code update(null)} is called
- * without any previous {@code update(non-null)} call
- */
- public void update(byte[] data, int offset, int length) throws IOException {
-
- // The last call
- if (data == null) {
- if (state == 0) {
- throw new IllegalStateException("No data to update");
- }
- // We accept manifest not ended with \n or \n\n
- if (hasLastByte()) {
- consumeCurrent();
- }
- // We accept empty lines at the end
- if (!currentAttr.isEmpty()) {
- consumeAttr();
- }
- state = 0; // back to non-update state
- current = null;
- currentAttr = null;
- return;
- }
-
- // The first call
- if (state == 0) {
- current = new byte[1024];
- currentAttr = super.getMainAttributes(); // the main attribute
- state = 1;
- }
-
- int end = offset + length;
-
- while (offset < end) {
- switch (data[offset]) {
- case '\r':
- break; // always skip
- case '\n':
- if (hasLastByte() && lastByte() == '\n') { // new section
- consumeCurrent();
- consumeAttr();
- if (state == 1) {
- state = 2;
- }
- currentAttr = new Attributes(2);
- } else {
- if (hasLastByte()) {
- // save \n into current but do not parse,
- // there might be a continuation later
- ensureCapacity();
- current[currentPos++] = data[offset];
- } else if (state == 1) {
- // there can be multiple empty lines between
- // sections, but cannot be at the beginning
- throw new IOException("invalid manifest format");
- }
- }
- break;
- case ' ':
- if (!hasLastByte()) {
- throw new IOException("invalid manifest format");
- } else if (lastByte() == '\n') {
- currentPos--; // continuation, remove last \n
- } else { // a very normal ' '
- ensureCapacity();
- current[currentPos++] = data[offset];
- }
- break;
- default:
- if (hasLastByte() && lastByte() == '\n') {
- // The start of a new pair, not continuation
- consumeCurrent(); // the last line read
- }
- ensureCapacity();
- current[currentPos++] = data[offset];
- break;
- }
- offset++;
- }
- }
-
- /**
- * Returns the main Attributes for the Manifest.
- * @exception IllegalStateException the main attributes is being read
- * @return the main Attributes for the Manifest
- */
- public Attributes getMainAttributes() {
- if (state == 1) {
- throw new IllegalStateException();
- }
- return super.getMainAttributes();
- }
-
- /**
- * Reads the Manifest from the specified InputStream. The entry
- * names and attributes read will be merged in with the current
- * manifest entries.
- *
- * @param is the input stream
- * @exception IOException if an I/O error has occurred
- * @exception IllegalStateException if called between two {@link #update}
- * calls
- */
- public void read(InputStream is) throws IOException {
- if (state != 0) {
- throw new IllegalStateException("Cannot call read between updates");
- }
- super.read(is);
- }
-
- /*
- * ---------- Helper methods -----------------
- */
-
- private void ensureCapacity() {
- if (currentPos >= current.length-1) {
- current = Arrays.copyOf(current, current.length*2);
- }
- }
-
- private boolean hasLastByte() {
- return currentPos > 0;
- }
-
- private byte lastByte() {
- return current[currentPos-1];
- }
-
- // Parse current as key:value and save into currentAttr.
- // There MUST be something inside current.
- private void consumeCurrent() throws IOException {
- // current normally has a \n end, except for the last line
- if (current[currentPos-1] == '\n') currentPos--;
- for (int i=0; i<currentPos; i++) {
- if (current[i] == ':') {
- String key = new String(current, 0, 0, i);
- i++;
- while (i < currentPos && current[i] == ' ') { i++; }
- String value = new String(current, i, currentPos-i, "UTF-8");
- currentAttr.putValue(key, value);
- currentPos = 0;
- return;
- }
- }
- throw new IOException("invalid header field");
- }
-
- // Merge currentAttr into Manifest
- private void consumeAttr() throws IOException {
- // Only needed for named entries. For the main attribute, key/value
- // is added into attr directly, but since getMainAttributes() throws
- // an exception, the partial data is not leaked.
- if (state != 1) {
- String name = currentAttr.getValue("Name");
- if (name != null) {
- currentAttr.remove(new Attributes.Name("Name"));
- Attributes old = getAttributes(name);
- if (old != null) old.putAll(currentAttr);
- else getEntries().put(name, currentAttr);
- } else {
- throw new IOException("invalid manifest format");
- }
- }
- }
-}