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8181323: Better timezone processing

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Reviewed-by: rriggs
This commit is contained in:
Naoto Sato 2017-06-15 09:57:15 -07:00
parent e7fdfdb7e7
commit 89b8d98d19
1 changed files with 14 additions and 6 deletions
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20
src/java.base/share/classes/java/util/SimpleTimeZone.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2017, 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
@ -41,6 +41,7 @@ package java.util;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.io.InvalidObjectException;
import sun.util.calendar.CalendarSystem;
import sun.util.calendar.CalendarUtils;
import sun.util.calendar.BaseCalendar;
@ -1278,6 +1279,9 @@ public class SimpleTimeZone extends TimeZone {
*/
private int serialVersionOnStream = currentSerialVersion;
// Maximum number of rules.
private static final int MAX_RULE_NUM = 6;
private synchronized void invalidateCache() {
cacheYear = startYear - 1;
cacheStart = cacheEnd = 0;
@ -1569,7 +1573,7 @@ public class SimpleTimeZone extends TimeZone {
*/
private byte[] packRules()
{
byte[] rules = new byte[6];
byte[] rules = new byte[MAX_RULE_NUM];
rules[0] = (byte)startDay;
rules[1] = (byte)startDayOfWeek;
rules[2] = (byte)endDay;
@ -1594,7 +1598,7 @@ public class SimpleTimeZone extends TimeZone {
endDayOfWeek = rules[3];
// As of serial version 2, include time modes
if (rules.length >= 6) {
if (rules.length >= MAX_RULE_NUM) {
startTimeMode = rules[4];
endTimeMode = rules[5];
}
@ -1691,9 +1695,13 @@ public class SimpleTimeZone extends TimeZone {
// store the actual rules (which have not be made compatible with 1.1)
// in the optional area. Read them in here and parse them.
int length = stream.readInt();
byte[] rules = new byte[length];
stream.readFully(rules);
unpackRules(rules);
if (length <= MAX_RULE_NUM) {
byte[] rules = new byte[length];
stream.readFully(rules);
unpackRules(rules);
} else {
throw new InvalidObjectException("Too many rules: " + length);
}
}
if (serialVersionOnStream >= 2) {