--- a/jdk/src/java.base/share/classes/sun/security/ssl/EngineArgs.java Thu Jun 11 00:23:01 2015 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,238 +0,0 @@
-/*
- * Copyright (c) 2004, 2012, 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.ssl;
-
-import java.nio.*;
-
-/*
- * A multi-purpose class which handles all of the SSLEngine arguments.
- * It validates arguments, checks for RO conditions, does space
- * calculations, performs scatter/gather, etc.
- *
- * @author Brad R. Wetmore
- */
-class EngineArgs {
-
- /*
- * Keep track of the input parameters.
- */
- ByteBuffer netData;
- ByteBuffer [] appData;
-
- private int offset; // offset/len for the appData array.
- private int len;
-
- /*
- * The initial pos/limit conditions. This is useful because we can
- * quickly calculate the amount consumed/produced in successful
- * operations, or easily return the buffers to their pre-error
- * conditions.
- */
- private int netPos;
- private int netLim;
-
- private int [] appPoss;
- private int [] appLims;
-
- /*
- * Sum total of the space remaining in all of the appData buffers
- */
- private int appRemaining = 0;
-
- private boolean wrapMethod;
-
- /*
- * Called by the SSLEngine.wrap() method.
- */
- EngineArgs(ByteBuffer [] appData, int offset, int len,
- ByteBuffer netData) {
- this.wrapMethod = true;
- init(netData, appData, offset, len);
- }
-
- /*
- * Called by the SSLEngine.unwrap() method.
- */
- EngineArgs(ByteBuffer netData, ByteBuffer [] appData, int offset,
- int len) {
- this.wrapMethod = false;
- init(netData, appData, offset, len);
- }
-
- /*
- * The main initialization method for the arguments. Most
- * of them are pretty obvious as to what they do.
- *
- * Since we're already iterating over appData array for validity
- * checking, we also keep track of how much remainging space is
- * available. Info is used in both unwrap (to see if there is
- * enough space available in the destination), and in wrap (to
- * determine how much more we can copy into the outgoing data
- * buffer.
- */
- private void init(ByteBuffer netData, ByteBuffer [] appData,
- int offset, int len) {
-
- if ((netData == null) || (appData == null)) {
- throw new IllegalArgumentException("src/dst is null");
- }
-
- if ((offset < 0) || (len < 0) || (offset > appData.length - len)) {
- throw new IndexOutOfBoundsException();
- }
-
- if (wrapMethod && netData.isReadOnly()) {
- throw new ReadOnlyBufferException();
- }
-
- netPos = netData.position();
- netLim = netData.limit();
-
- appPoss = new int [appData.length];
- appLims = new int [appData.length];
-
- for (int i = offset; i < offset + len; i++) {
- if (appData[i] == null) {
- throw new IllegalArgumentException(
- "appData[" + i + "] == null");
- }
-
- /*
- * If we're unwrapping, then check to make sure our
- * destination bufffers are writable.
- */
- if (!wrapMethod && appData[i].isReadOnly()) {
- throw new ReadOnlyBufferException();
- }
-
- appRemaining += appData[i].remaining();
-
- appPoss[i] = appData[i].position();
- appLims[i] = appData[i].limit();
- }
-
- /*
- * Ok, looks like we have a good set of args, let's
- * store the rest of this stuff.
- */
- this.netData = netData;
- this.appData = appData;
- this.offset = offset;
- this.len = len;
- }
-
- /*
- * Given spaceLeft bytes to transfer, gather up that much data
- * from the appData buffers (starting at offset in the array),
- * and transfer it into the netData buffer.
- *
- * The user has already ensured there is enough room.
- */
- void gather(int spaceLeft) {
- for (int i = offset; (i < (offset + len)) && (spaceLeft > 0); i++) {
- int amount = Math.min(appData[i].remaining(), spaceLeft);
- appData[i].limit(appData[i].position() + amount);
- netData.put(appData[i]);
- appRemaining -= amount;
- spaceLeft -= amount;
- }
- }
-
- /*
- * Using the supplied buffer, scatter the data into the appData buffers
- * (starting at offset in the array).
- *
- * The user has already ensured there is enough room.
- */
- void scatter(ByteBuffer readyData) {
- int amountLeft = readyData.remaining();
-
- for (int i = offset; (i < (offset + len)) && (amountLeft > 0);
- i++) {
- int amount = Math.min(appData[i].remaining(), amountLeft);
- readyData.limit(readyData.position() + amount);
- appData[i].put(readyData);
- amountLeft -= amount;
- }
- assert(readyData.remaining() == 0);
- }
-
- int getAppRemaining() {
- return appRemaining;
- }
-
- /*
- * Calculate the bytesConsumed/byteProduced. Aren't you glad
- * we saved this off earlier?
- */
- int deltaNet() {
- return (netData.position() - netPos);
- }
-
- /*
- * Calculate the bytesConsumed/byteProduced. Aren't you glad
- * we saved this off earlier?
- */
- int deltaApp() {
- int sum = 0; // Only calculating 2^14 here, don't need a long.
-
- for (int i = offset; i < offset + len; i++) {
- sum += appData[i].position() - appPoss[i];
- }
-
- return sum;
- }
-
- /*
- * In the case of Exception, we want to reset the positions
- * to appear as though no data has been consumed or produced.
- *
- * Currently, this method is only called as we are preparing to
- * fail out, and thus we don't need to actually recalculate
- * appRemaining. If that assumption changes, that variable should
- * be updated here.
- */
- void resetPos() {
- netData.position(netPos);
- for (int i = offset; i < offset + len; i++) {
- // See comment above about recalculating appRemaining.
- appData[i].position(appPoss[i]);
- }
- }
-
- /*
- * We are doing lots of ByteBuffer manipulations, in which case
- * we need to make sure that the limits get set back correctly.
- * This is one of the last things to get done before returning to
- * the user.
- */
- void resetLim() {
- netData.limit(netLim);
- for (int i = offset; i < offset + len; i++) {
- appData[i].limit(appLims[i]);
- }
- }
-}