author | alanb |
Mon, 04 Apr 2011 18:09:53 +0100 | |
changeset 9025 | a72fc1fc4b71 |
parent 7668 | d4a77089c587 |
child 11130 | c7093e306a34 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.util.calendar; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import java.lang.ref.SoftReference; |
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6499
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
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import java.nio.file.FileSystems; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedActionException; |
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import java.security.PrivilegedExceptionAction; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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||
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/** |
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* <code>ZoneInfoFile</code> reads Zone information files in the |
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* <java.home>/lib/zi directory and provides time zone |
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* information in the form of a {@link ZoneInfo} object. Also, it |
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* reads the ZoneInfoMappings file to obtain time zone IDs information |
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* that is used by the {@link ZoneInfo} class. The directory layout |
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* and data file formats are as follows. |
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* |
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* <p><strong>Directory layout</strong><p> |
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* |
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* All zone data files and ZoneInfoMappings are put under the |
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* <java.home>/lib/zi directory. A path name for a given time |
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* zone ID is a concatenation of <java.home>/lib/zi/ and the |
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* time zone ID. (The file separator is replaced with the platform |
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* dependent value. e.g., '\' for Win32.) An example layout will look |
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* like as follows. |
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* <blockquote> |
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* <pre> |
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* <java.home>/lib/zi/Africa/Addis_Ababa |
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* /Africa/Dakar |
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* /America/Los_Angeles |
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* /Asia/Singapore |
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* /EET |
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* /Europe/Oslo |
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* /GMT |
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* /Pacific/Galapagos |
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* ... |
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* /ZoneInfoMappings |
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* </pre> |
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* </blockquote> |
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* |
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* A zone data file has specific information of each zone. |
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* <code>ZoneInfoMappings</code> has global information of zone IDs so |
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* that the information can be obtained without instantiating all time |
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* zones. |
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* |
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* <p><strong>File format</strong><p> |
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* |
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* Two binary-file formats based on a simple Tag-Length-Value format are used |
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* to describe TimeZone information. The generic format of a data file is: |
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* <blockquote> |
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* <pre> |
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* DataFile { |
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* u1 magic[7]; |
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* u1 version; |
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* data_item data[]; |
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* } |
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* </pre> |
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* </blockquote> |
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* where <code>magic</code> is a magic number identifying a file |
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* format, <code>version</code> is the format version number, and |
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* <code>data</code> is one or more <code>data_item</code>s. The |
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* <code>data_item</code> structure is: |
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* <blockquote> |
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* <pre> |
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* data_item { |
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* u1 tag; |
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* u2 length; |
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* u1 value[length]; |
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* } |
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* </pre> |
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* </blockquote> |
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* where <code>tag</code> indicates the data type of the item, |
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* <code>length</code> is a byte count of the following |
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* <code>value</code> that is the content of item data. |
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* <p> |
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* All data is stored in the big-endian order. There is no boundary |
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* alignment between date items. |
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* |
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* <p><strong>1. ZoneInfo data file</strong><p> |
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* |
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* Each ZoneInfo data file consists of the following members. |
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* <br> |
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* <blockquote> |
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* <pre> |
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* ZoneInfoDataFile { |
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* u1 magic[7]; |
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* u1 version; |
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* SET OF<sup>1</sup> { |
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* transition transitions<sup>2</sup>; |
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* offset_table offsets<sup>2</sup>; |
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* simpletimezone stzparams<sup>2</sup>; |
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* raw_offset rawoffset; |
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* dstsaving dst; |
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* checksum crc32; |
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* gmtoffsetwillchange gmtflag<sup>2</sup>; |
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* } |
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* } |
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* 1: an unordered collection of zero or one occurrences of each item |
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* 2: optional item |
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* </pre> |
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* </blockquote> |
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* <code>magic</code> is a byte-string constant identifying the |
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* ZoneInfo data file. This field must be <code>"javazi\0"</code> |
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* defined as {@link #JAVAZI_LABEL}. |
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* <p> |
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* <code>version</code> is the version number of the file format. This |
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* will be used for compatibility check. This field must be |
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* <code>0x01</code> in this version. |
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* <p> |
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* <code>transition</code>, <code>offset_table</code> and |
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* <code>simpletimezone</code> have information of time transition |
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* from the past to the future. Therefore, these structures don't |
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* exist if the zone didn't change zone names and haven't applied DST in |
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* the past, and haven't planned to apply it. (e.g. Asia/Tokyo zone) |
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* <p> |
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* <code>raw_offset</code>, <code>dstsaving</code> and <code>checksum</code> |
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* exist in every zoneinfo file. They are used by TimeZone.class indirectly. |
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* |
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* <p><strong>1.1 <code>transition</code> structure</strong><p><a name="transition"></a> |
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* <blockquote> |
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* <pre> |
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* transition { |
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* u1 tag; // 0x04 : constant |
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* u2 length; // byte length of whole values |
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* s8 value[length/8]; // transitions in `long' |
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* } |
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* </pre> |
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* </blockquote> |
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* See {@link ZoneInfo#transitions ZoneInfo.transitions} about the value. |
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* |
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* <p><strong>1.2 <code>offset_table</code> structure</strong><p> |
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* <blockquote> |
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* <pre> |
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* offset_table { |
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* u1 tag; // 0x05 : constant |
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* u2 length; // byte length of whole values |
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* s4 value[length/4]; // offset values in `int' |
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* } |
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* </pre> |
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* </blockquote> |
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* |
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* <p><strong>1.3 <code>simpletimezone</code> structure</strong><p> |
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* See {@link ZoneInfo#simpleTimeZoneParams ZoneInfo.simpleTimeZoneParams} |
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* about the value. |
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* <blockquote> |
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* <pre> |
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* simpletimezone { |
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* u1 tag; // 0x06 : constant |
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* u2 length; // byte length of whole values |
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* s4 value[length/4]; // SimpleTimeZone parameters |
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* } |
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* </pre> |
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* </blockquote> |
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* See {@link ZoneInfo#offsets ZoneInfo.offsets} about the value. |
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* |
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* <p><strong>1.4 <code>raw_offset</code> structure</strong><p> |
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* <blockquote> |
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* <pre> |
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* raw_offset { |
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* u1 tag; // 0x01 : constant |
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* u2 length; // must be 4. |
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* s4 value; // raw GMT offset [millisecond] |
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* } |
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* </pre> |
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* </blockquote> |
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* See {@link ZoneInfo#rawOffset ZoneInfo.rawOffset} about the value. |
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* |
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* <p><strong>1.5 <code>dstsaving</code> structure</strong><p> |
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* Value has dstSaving in seconds. |
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* <blockquote> |
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* <pre> |
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* dstsaving { |
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* u1 tag; // 0x02 : constant |
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* u2 length; // must be 2. |
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* s2 value; // DST save value [second] |
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* } |
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* </pre> |
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* </blockquote> |
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* See {@link ZoneInfo#dstSavings ZoneInfo.dstSavings} about value. |
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* |
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* <p><strong>1.6 <code>checksum</code> structure</strong><p> |
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* <blockquote> |
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* <pre> |
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* checksum { |
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* u1 tag; // 0x03 : constant |
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* u2 length; // must be 4. |
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* s4 value; // CRC32 value of transitions |
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* } |
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* </pre> |
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* </blockquote> |
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* See {@link ZoneInfo#checksum ZoneInfo.checksum}. |
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* |
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* <p><strong>1.7 <code>gmtoffsetwillchange</code> structure</strong><p> |
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* This record has a flag value for {@link ZoneInfo#rawOffsetWillChange}. |
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* If this record is not present in a zoneinfo file, 0 is assumed for |
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* the value. |
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* <blockquote> |
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* <pre> |
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* gmtoffsetwillchange { |
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* u1 tag; // 0x07 : constant |
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* u2 length; // must be 1. |
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* u1 value; // 1: if the GMT raw offset will change |
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* // in the future, 0, otherwise. |
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* } |
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* </pre> |
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* </blockquote> |
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* |
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* |
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* <p><strong>2. ZoneInfoMappings file</strong><p> |
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* |
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* The ZoneInfoMappings file consists of the following members. |
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* <br> |
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* <blockquote> |
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* <pre> |
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* ZoneInfoMappings { |
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* u1 magic[7]; |
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* u1 version; |
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* SET OF { |
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* versionName version; |
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* zone_id_table zoneIDs; |
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* raw_offset_table rawoffsets; |
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* raw_offset_index_table rawoffsetindices; |
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* alias_table aliases; |
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* excluded_list excludedList; |
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* } |
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* } |
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* </pre> |
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* </blockquote> |
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* |
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* <code>magic</code> is a byte-string constant which has the file type. |
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* This field must be <code>"javazm\0"</code> defined as {@link #JAVAZM_LABEL}. |
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* <p> |
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* <code>version</code> is the version number of this file |
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* format. This will be used for compatibility check. This field must |
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* be <code>0x01</code> in this version. |
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* <p> |
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* <code>versionName</code> shows which version of Olson's data has been used |
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* to generate this ZoneInfoMappings. (e.g. <code>tzdata2000g</code>) <br> |
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* This field is for trouble-shooting and isn't usually used in runtime. |
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* <p> |
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* <code>zone_id_table</code>, <code>raw_offset_index_table</code> and |
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* <code>alias_table</code> are general information of supported |
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* zones. |
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* |
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* <p><strong>2.1 <code>zone_id_table</code> structure</strong><p> |
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* The list of zone IDs included in the zi database. The list does |
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* <em>not</em> include zone IDs, if any, listed in excludedList. |
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* <br> |
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* <blockquote> |
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* <pre> |
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* zone_id_table { |
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* u1 tag; // 0x40 : constant |
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* u2 length; // byte length of whole values |
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* u2 zone_id_count; |
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* zone_id value[zone_id_count]; |
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* } |
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* |
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* zone_id { |
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* u1 byte_length; // byte length of id |
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* u1 id[byte_length]; // zone name string |
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* } |
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* </pre> |
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* </blockquote> |
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* |
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* <p><strong>2.2 <code>raw_offset_table</code> structure</strong><p> |
|
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* <br> |
|
300 |
* <blockquote> |
|
301 |
* <pre> |
|
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* raw_offset_table { |
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* u1 tag; // 0x41 : constant |
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* u2 length; // byte length of whole values |
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* s4 value[length/4]; // raw GMT offset in milliseconds |
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* } |
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* </pre> |
|
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* </blockquote> |
|
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* |
|
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* <p><strong>2.3 <code>raw_offset_index_table</code> structure</strong><p> |
|
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* <br> |
|
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* <blockquote> |
|
313 |
* <pre> |
|
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* raw_offset_index_table { |
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* u1 tag; // 0x42 : constant |
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* u2 length; // byte length of whole values |
|
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* u1 value[length]; |
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* } |
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* </pre> |
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* </blockquote> |
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321 |
* |
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* <p><strong>2.4 <code>alias_table</code> structure</strong><p> |
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* <br> |
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* <blockquote> |
|
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* <pre> |
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* alias_table { |
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* u1 tag; // 0x43 : constant |
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* u2 length; // byte length of whole values |
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* u2 nentries; // number of id-pairs |
|
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* id_pair value[nentries]; |
|
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* } |
|
332 |
* |
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* id_pair { |
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* zone_id aliasname; |
|
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* zone_id ID; |
|
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* } |
|
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* </pre> |
|
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* </blockquote> |
|
339 |
* |
|
340 |
* <p><strong>2.5 <code>versionName</code> structure</strong><p> |
|
341 |
* <br> |
|
342 |
* <blockquote> |
|
343 |
* <pre> |
|
344 |
* versionName { |
|
345 |
* u1 tag; // 0x44 : constant |
|
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* u2 length; // byte length of whole values |
|
347 |
* u1 value[length]; |
|
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* } |
|
349 |
* </pre> |
|
350 |
* </blockquote> |
|
351 |
* |
|
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* <p><strong>2.6 <code>excludeList</code> structure</strong><p> |
|
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* The list of zone IDs whose zones will change their GMT offsets |
|
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* (a.k.a. raw offsets) some time in the future. Those IDs must be |
|
355 |
* added to the list of zone IDs for getAvailableIDs(). Also they must |
|
356 |
* be examined for getAvailableIDs(int) to determine the |
|
357 |
* <em>current</em> GMT offsets. |
|
358 |
* <br> |
|
359 |
* <blockquote> |
|
360 |
* <pre> |
|
361 |
* excluded_list { |
|
362 |
* u1 tag; // 0x45 : constant |
|
363 |
* u2 length; // byte length of whole values |
|
364 |
* u2 nentries; // number of zone_ids |
|
365 |
* zone_id value[nentries]; // excluded zone IDs |
|
366 |
* } |
|
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* </pre> |
|
368 |
* </blockquote> |
|
369 |
* |
|
370 |
* @since 1.4 |
|
371 |
*/ |
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372 |
||
373 |
public class ZoneInfoFile { |
|
374 |
||
375 |
/** |
|
376 |
* The magic number for the ZoneInfo data file format. |
|
377 |
*/ |
|
378 |
public static final byte[] JAVAZI_LABEL = { |
|
379 |
(byte)'j', (byte)'a', (byte)'v', (byte)'a', (byte)'z', (byte)'i', (byte)'\0' |
|
380 |
}; |
|
381 |
private static final int JAVAZI_LABEL_LENGTH = JAVAZI_LABEL.length; |
|
382 |
||
383 |
/** |
|
384 |
* The ZoneInfo data file format version number. Must increase |
|
385 |
* one when any incompatible change has been made. |
|
386 |
*/ |
|
387 |
public static final byte JAVAZI_VERSION = 0x01; |
|
388 |
||
389 |
/** |
|
390 |
* Raw offset data item tag. |
|
391 |
*/ |
|
392 |
public static final byte TAG_RawOffset = 1; |
|
393 |
||
394 |
/** |
|
395 |
* Known last Daylight Saving Time save value data item tag. |
|
396 |
*/ |
|
397 |
public static final byte TAG_LastDSTSaving = 2; |
|
398 |
||
399 |
/** |
|
400 |
* Checksum data item tag. |
|
401 |
*/ |
|
402 |
public static final byte TAG_CRC32 = 3; |
|
403 |
||
404 |
/** |
|
405 |
* Transition data item tag. |
|
406 |
*/ |
|
407 |
public static final byte TAG_Transition = 4; |
|
408 |
||
409 |
/** |
|
410 |
* Offset table data item tag. |
|
411 |
*/ |
|
412 |
public static final byte TAG_Offset = 5; |
|
413 |
||
414 |
/** |
|
415 |
* SimpleTimeZone parameters data item tag. |
|
416 |
*/ |
|
417 |
public static final byte TAG_SimpleTimeZone = 6; |
|
418 |
||
419 |
/** |
|
420 |
* Raw GMT offset will change in the future. |
|
421 |
*/ |
|
422 |
public static final byte TAG_GMTOffsetWillChange = 7; |
|
423 |
||
424 |
||
425 |
/** |
|
426 |
* The ZoneInfoMappings file name. |
|
427 |
*/ |
|
428 |
public static final String JAVAZM_FILE_NAME = "ZoneInfoMappings"; |
|
429 |
||
430 |
/** |
|
431 |
* The magic number for the ZoneInfoMappings file format. |
|
432 |
*/ |
|
433 |
public static final byte[] JAVAZM_LABEL = { |
|
434 |
(byte)'j', (byte)'a', (byte)'v', (byte)'a', (byte)'z', (byte)'m', (byte)'\0' |
|
435 |
}; |
|
436 |
private static final int JAVAZM_LABEL_LENGTH = JAVAZM_LABEL.length; |
|
437 |
||
438 |
/** |
|
439 |
* The ZoneInfoMappings file format version number. Must increase |
|
440 |
* one when any incompatible change has been made. |
|
441 |
*/ |
|
442 |
public static final byte JAVAZM_VERSION = 0x01; |
|
443 |
||
444 |
/** |
|
445 |
* Time zone IDs data item tag. |
|
446 |
*/ |
|
447 |
public static final byte TAG_ZoneIDs = 64; |
|
448 |
||
449 |
/** |
|
450 |
* Raw GMT offsets table data item tag. |
|
451 |
*/ |
|
452 |
public static final byte TAG_RawOffsets = 65; |
|
453 |
||
454 |
/** |
|
455 |
* Indices to the raw GMT offset table data item tag. |
|
456 |
*/ |
|
457 |
public static final byte TAG_RawOffsetIndices = 66; |
|
458 |
||
459 |
/** |
|
460 |
* Time zone aliases table data item tag. |
|
461 |
*/ |
|
462 |
public static final byte TAG_ZoneAliases = 67; |
|
463 |
||
464 |
/** |
|
465 |
* Olson's public zone information version tag. |
|
466 |
*/ |
|
467 |
public static final byte TAG_TZDataVersion = 68; |
|
468 |
||
469 |
/** |
|
470 |
* Excluded zones item tag. (Added in Mustang) |
|
471 |
*/ |
|
472 |
public static final byte TAG_ExcludedZones = 69; |
|
473 |
||
474 |
private static Map<String, ZoneInfo> zoneInfoObjects = null; |
|
475 |
||
6499
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
476 |
private static final String ziDir = AccessController.doPrivileged( |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
477 |
new PrivilegedAction<String>() { |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
478 |
public String run() { |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
479 |
String zi = System.getProperty("java.home") + |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
480 |
File.separator + "lib" + File.separator + "zi"; |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
481 |
try { |
9025
a72fc1fc4b71
7029979: (fs) Path.toRealPath(boolean) should be toRealPath(LinkOption...)
alanb
parents:
7668
diff
changeset
|
482 |
zi = FileSystems.getDefault().getPath(zi).toRealPath().toString(); |
6499
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
483 |
} catch(Exception e) { |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
484 |
} |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
485 |
return zi; |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
486 |
} |
7d8804ed110b
6912560: Timezone is not set correctly on Win Vista when Security manager is present.
okutsu
parents:
5506
diff
changeset
|
487 |
}); |
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
488 |
|
2 | 489 |
/** |
490 |
* Converts the given time zone ID to a platform dependent path |
|
491 |
* name. For example, "America/Los_Angeles" is converted to |
|
492 |
* "America\Los_Angeles" on Win32. |
|
493 |
* @return a modified ID replacing '/' with {@link |
|
494 |
* java.io.File#separatorChar File.separatorChar} if needed. |
|
495 |
*/ |
|
496 |
public static String getFileName(String ID) { |
|
497 |
if (File.separatorChar == '/') { |
|
498 |
return ID; |
|
499 |
} |
|
500 |
return ID.replace('/', File.separatorChar); |
|
501 |
} |
|
502 |
||
503 |
/** |
|
504 |
* Gets a ZoneInfo with the given GMT offset. The object |
|
505 |
* has its ID in the format of GMT{+|-}hh:mm. |
|
506 |
* |
|
507 |
* @param originalId the given custom id (before normalized such as "GMT+9") |
|
508 |
* @param gmtOffset GMT offset <em>in milliseconds</em> |
|
509 |
* @return a ZoneInfo constructed with the given GMT offset |
|
510 |
*/ |
|
511 |
public static ZoneInfo getCustomTimeZone(String originalId, int gmtOffset) { |
|
512 |
String id = toCustomID(gmtOffset); |
|
513 |
||
514 |
ZoneInfo zi = getFromCache(id); |
|
515 |
if (zi == null) { |
|
516 |
zi = new ZoneInfo(id, gmtOffset); |
|
517 |
zi = addToCache(id, zi); |
|
518 |
if (!id.equals(originalId)) { |
|
519 |
zi = addToCache(originalId, zi); |
|
520 |
} |
|
521 |
} |
|
522 |
return (ZoneInfo) zi.clone(); |
|
523 |
} |
|
524 |
||
525 |
public static String toCustomID(int gmtOffset) { |
|
526 |
char sign; |
|
527 |
int offset = gmtOffset / 60000; |
|
528 |
||
529 |
if (offset >= 0) { |
|
530 |
sign = '+'; |
|
531 |
} else { |
|
532 |
sign = '-'; |
|
533 |
offset = -offset; |
|
534 |
} |
|
535 |
int hh = offset / 60; |
|
536 |
int mm = offset % 60; |
|
537 |
||
538 |
char[] buf = new char[] { 'G', 'M', 'T', sign, '0', '0', ':', '0', '0' }; |
|
539 |
if (hh >= 10) { |
|
540 |
buf[4] += hh / 10; |
|
541 |
} |
|
542 |
buf[5] += hh % 10; |
|
543 |
if (mm != 0) { |
|
544 |
buf[7] += mm / 10; |
|
545 |
buf[8] += mm % 10; |
|
546 |
} |
|
547 |
return new String(buf); |
|
548 |
} |
|
549 |
||
550 |
/** |
|
551 |
* @return a ZoneInfo instance created for the specified id, or |
|
552 |
* null if there is no time zone data file found for the specified |
|
553 |
* id. |
|
554 |
*/ |
|
555 |
public static ZoneInfo getZoneInfo(String id) { |
|
556 |
ZoneInfo zi = getFromCache(id); |
|
557 |
if (zi == null) { |
|
558 |
zi = createZoneInfo(id); |
|
559 |
if (zi == null) { |
|
560 |
return null; |
|
561 |
} |
|
562 |
zi = addToCache(id, zi); |
|
563 |
} |
|
564 |
return (ZoneInfo) zi.clone(); |
|
565 |
} |
|
566 |
||
567 |
synchronized static ZoneInfo getFromCache(String id) { |
|
568 |
if (zoneInfoObjects == null) { |
|
569 |
return null; |
|
570 |
} |
|
571 |
return zoneInfoObjects.get(id); |
|
572 |
} |
|
573 |
||
574 |
synchronized static ZoneInfo addToCache(String id, ZoneInfo zi) { |
|
575 |
if (zoneInfoObjects == null) { |
|
576 |
zoneInfoObjects = new HashMap<String, ZoneInfo>(); |
|
577 |
} else { |
|
578 |
ZoneInfo zone = zoneInfoObjects.get(id); |
|
579 |
if (zone != null) { |
|
580 |
return zone; |
|
581 |
} |
|
582 |
} |
|
583 |
zoneInfoObjects.put(id, zi); |
|
584 |
return zi; |
|
585 |
} |
|
586 |
||
587 |
private static ZoneInfo createZoneInfo(String id) { |
|
588 |
byte[] buf = readZoneInfoFile(getFileName(id)); |
|
589 |
if (buf == null) { |
|
590 |
return null; |
|
591 |
} |
|
592 |
||
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
593 |
int index = 0; |
2 | 594 |
int filesize = buf.length; |
595 |
int rawOffset = 0; |
|
596 |
int dstSavings = 0; |
|
597 |
int checksum = 0; |
|
598 |
boolean willGMTOffsetChange = false; |
|
599 |
long[] transitions = null; |
|
600 |
int[] offsets = null; |
|
601 |
int[] simpleTimeZoneParams = null; |
|
602 |
||
603 |
try { |
|
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
604 |
for (index = 0; index < JAVAZI_LABEL.length; index++) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
605 |
if (buf[index] != JAVAZI_LABEL[index]) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
606 |
System.err.println("ZoneInfo: wrong magic number: " + id); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
607 |
return null; |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
608 |
} |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
609 |
} |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
610 |
if (buf[index++] > JAVAZI_VERSION) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
611 |
System.err.println("ZoneInfo: incompatible version (" |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
612 |
+ buf[index - 1] + "): " + id); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
613 |
return null; |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
614 |
} |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
615 |
|
2 | 616 |
while (index < filesize) { |
617 |
byte tag = buf[index++]; |
|
618 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
619 |
||
620 |
if (filesize < index+len) { |
|
621 |
break; |
|
622 |
} |
|
623 |
||
624 |
switch (tag) { |
|
625 |
case TAG_CRC32: |
|
626 |
{ |
|
627 |
int val = buf[index++] & 0xff; |
|
628 |
val = (val << 8) + (buf[index++] & 0xff); |
|
629 |
val = (val << 8) + (buf[index++] & 0xff); |
|
630 |
val = (val << 8) + (buf[index++] & 0xff); |
|
631 |
checksum = val; |
|
632 |
} |
|
633 |
break; |
|
634 |
||
635 |
case TAG_LastDSTSaving: |
|
636 |
{ |
|
637 |
short val = (short)(buf[index++] & 0xff); |
|
638 |
val = (short)((val << 8) + (buf[index++] & 0xff)); |
|
639 |
dstSavings = val * 1000; |
|
640 |
} |
|
641 |
break; |
|
642 |
||
643 |
case TAG_RawOffset: |
|
644 |
{ |
|
645 |
int val = buf[index++] & 0xff; |
|
646 |
val = (val << 8) + (buf[index++] & 0xff); |
|
647 |
val = (val << 8) + (buf[index++] & 0xff); |
|
648 |
val = (val << 8) + (buf[index++] & 0xff); |
|
649 |
rawOffset = val; |
|
650 |
} |
|
651 |
break; |
|
652 |
||
653 |
case TAG_Transition: |
|
654 |
{ |
|
655 |
int n = len / 8; |
|
656 |
transitions = new long[n]; |
|
657 |
for (int i = 0; i < n; i ++) { |
|
658 |
long val = buf[index++] & 0xff; |
|
659 |
val = (val << 8) + (buf[index++] & 0xff); |
|
660 |
val = (val << 8) + (buf[index++] & 0xff); |
|
661 |
val = (val << 8) + (buf[index++] & 0xff); |
|
662 |
val = (val << 8) + (buf[index++] & 0xff); |
|
663 |
val = (val << 8) + (buf[index++] & 0xff); |
|
664 |
val = (val << 8) + (buf[index++] & 0xff); |
|
665 |
val = (val << 8) + (buf[index++] & 0xff); |
|
666 |
transitions[i] = val; |
|
667 |
} |
|
668 |
} |
|
669 |
break; |
|
670 |
||
671 |
case TAG_Offset: |
|
672 |
{ |
|
673 |
int n = len / 4; |
|
674 |
offsets = new int[n]; |
|
675 |
for (int i = 0; i < n; i ++) { |
|
676 |
int val = buf[index++] & 0xff; |
|
677 |
val = (val << 8) + (buf[index++] & 0xff); |
|
678 |
val = (val << 8) + (buf[index++] & 0xff); |
|
679 |
val = (val << 8) + (buf[index++] & 0xff); |
|
680 |
offsets[i] = val; |
|
681 |
} |
|
682 |
} |
|
683 |
break; |
|
684 |
||
685 |
case TAG_SimpleTimeZone: |
|
686 |
{ |
|
687 |
if (len != 32 && len != 40) { |
|
688 |
System.err.println("ZoneInfo: wrong SimpleTimeZone parameter size"); |
|
689 |
return null; |
|
690 |
} |
|
691 |
int n = len / 4; |
|
692 |
simpleTimeZoneParams = new int[n]; |
|
693 |
for (int i = 0; i < n; i++) { |
|
694 |
int val = buf[index++] & 0xff; |
|
695 |
val = (val << 8) + (buf[index++] & 0xff); |
|
696 |
val = (val << 8) + (buf[index++] & 0xff); |
|
697 |
val = (val << 8) + (buf[index++] & 0xff); |
|
698 |
simpleTimeZoneParams[i] = val; |
|
699 |
} |
|
700 |
} |
|
701 |
break; |
|
702 |
||
703 |
case TAG_GMTOffsetWillChange: |
|
704 |
{ |
|
705 |
if (len != 1) { |
|
706 |
System.err.println("ZoneInfo: wrong byte length for TAG_GMTOffsetWillChange"); |
|
707 |
} |
|
708 |
willGMTOffsetChange = buf[index++] == 1; |
|
709 |
} |
|
710 |
break; |
|
711 |
||
712 |
default: |
|
713 |
System.err.println("ZoneInfo: unknown tag < " + tag + ">. ignored."); |
|
714 |
index += len; |
|
715 |
break; |
|
716 |
} |
|
717 |
} |
|
718 |
} catch (Exception e) { |
|
719 |
System.err.println("ZoneInfo: corrupted zoneinfo file: " + id); |
|
720 |
return null; |
|
721 |
} |
|
722 |
||
723 |
if (index != filesize) { |
|
724 |
System.err.println("ZoneInfo: wrong file size: " + id); |
|
725 |
return null; |
|
726 |
} |
|
727 |
||
728 |
return new ZoneInfo(id, rawOffset, dstSavings, checksum, |
|
729 |
transitions, offsets, simpleTimeZoneParams, |
|
730 |
willGMTOffsetChange); |
|
731 |
} |
|
732 |
||
733 |
private volatile static SoftReference<List<String>> zoneIDs = null; |
|
734 |
||
735 |
static List<String> getZoneIDs() { |
|
736 |
List<String> ids = null; |
|
737 |
||
738 |
SoftReference<List<String>> cache = zoneIDs; |
|
739 |
if (cache != null) { |
|
740 |
ids = cache.get(); |
|
741 |
if (ids != null) { |
|
742 |
return ids; |
|
743 |
} |
|
744 |
} |
|
745 |
||
746 |
byte[] buf = null; |
|
747 |
buf = getZoneInfoMappings(); |
|
748 |
int index = JAVAZM_LABEL_LENGTH + 1; |
|
749 |
int filesize = buf.length; |
|
750 |
||
751 |
try { |
|
752 |
loop: |
|
753 |
while (index < filesize) { |
|
754 |
byte tag = buf[index++]; |
|
755 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
756 |
||
757 |
switch (tag) { |
|
758 |
case TAG_ZoneIDs: |
|
759 |
{ |
|
760 |
int n = (buf[index++] << 8) + (buf[index++] & 0xFF); |
|
761 |
ids = new ArrayList<String>(n); |
|
762 |
||
763 |
for (int i = 0; i < n; i++) { |
|
764 |
byte m = buf[index++]; |
|
765 |
ids.add(new String(buf, index, m, "UTF-8")); |
|
766 |
index += m; |
|
767 |
} |
|
768 |
} |
|
769 |
break loop; |
|
770 |
||
771 |
default: |
|
772 |
index += len; |
|
773 |
break; |
|
774 |
} |
|
775 |
} |
|
776 |
} catch (Exception e) { |
|
777 |
System.err.println("ZoneInfo: corrupted " + JAVAZM_FILE_NAME); |
|
778 |
} |
|
779 |
||
780 |
zoneIDs = new SoftReference<List<String>>(ids); |
|
781 |
return ids; |
|
782 |
} |
|
783 |
||
784 |
/** |
|
785 |
* @return an alias table in HashMap where a key is an alias ID |
|
786 |
* (e.g., "PST") and its value is a real time zone ID (e.g., |
|
787 |
* "America/Los_Angeles"). |
|
788 |
*/ |
|
789 |
static Map<String, String> getZoneAliases() { |
|
790 |
byte[] buf = getZoneInfoMappings(); |
|
791 |
int index = JAVAZM_LABEL_LENGTH + 1; |
|
792 |
int filesize = buf.length; |
|
793 |
Map<String, String> aliases = null; |
|
794 |
||
795 |
try { |
|
796 |
loop: |
|
797 |
while (index < filesize) { |
|
798 |
byte tag = buf[index++]; |
|
799 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
800 |
||
801 |
switch (tag) { |
|
802 |
case TAG_ZoneAliases: |
|
803 |
{ |
|
804 |
int n = (buf[index++] << 8) + (buf[index++] & 0xFF); |
|
805 |
aliases = new HashMap<String, String>(n); |
|
806 |
for (int i = 0; i < n; i++) { |
|
807 |
byte m = buf[index++]; |
|
808 |
String name = new String(buf, index, m, "UTF-8"); |
|
809 |
index += m; |
|
810 |
m = buf[index++]; |
|
811 |
String realName = new String(buf, index, m, "UTF-8"); |
|
812 |
index += m; |
|
813 |
aliases.put(name, realName); |
|
814 |
} |
|
815 |
} |
|
816 |
break loop; |
|
817 |
||
818 |
default: |
|
819 |
index += len; |
|
820 |
break; |
|
821 |
} |
|
822 |
} |
|
823 |
} catch (Exception e) { |
|
824 |
System.err.println("ZoneInfo: corrupted " + JAVAZM_FILE_NAME); |
|
825 |
return null; |
|
826 |
} |
|
827 |
return aliases; |
|
828 |
} |
|
829 |
||
830 |
private volatile static SoftReference<List<String>> excludedIDs = null; |
|
831 |
private volatile static boolean hasNoExcludeList = false; |
|
832 |
||
833 |
/** |
|
834 |
* @return a List of zone IDs for zones that will change their GMT |
|
835 |
* offsets in some future time. |
|
836 |
* |
|
837 |
* @since 1.6 |
|
838 |
*/ |
|
839 |
static List<String> getExcludedZones() { |
|
840 |
if (hasNoExcludeList) { |
|
841 |
return null; |
|
842 |
} |
|
843 |
||
844 |
List<String> excludeList = null; |
|
845 |
||
846 |
SoftReference<List<String>> cache = excludedIDs; |
|
847 |
if (cache != null) { |
|
848 |
excludeList = cache.get(); |
|
849 |
if (excludeList != null) { |
|
850 |
return excludeList; |
|
851 |
} |
|
852 |
} |
|
853 |
||
854 |
byte[] buf = getZoneInfoMappings(); |
|
855 |
int index = JAVAZM_LABEL_LENGTH + 1; |
|
856 |
int filesize = buf.length; |
|
857 |
||
858 |
try { |
|
859 |
loop: |
|
860 |
while (index < filesize) { |
|
861 |
byte tag = buf[index++]; |
|
862 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
863 |
||
864 |
switch (tag) { |
|
865 |
case TAG_ExcludedZones: |
|
866 |
{ |
|
867 |
int n = (buf[index++] << 8) + (buf[index++] & 0xFF); |
|
868 |
excludeList = new ArrayList<String>(); |
|
869 |
for (int i = 0; i < n; i++) { |
|
870 |
byte m = buf[index++]; |
|
871 |
String name = new String(buf, index, m, "UTF-8"); |
|
872 |
index += m; |
|
873 |
excludeList.add(name); |
|
874 |
} |
|
875 |
} |
|
876 |
break loop; |
|
877 |
||
878 |
default: |
|
879 |
index += len; |
|
880 |
break; |
|
881 |
} |
|
882 |
} |
|
883 |
} catch (Exception e) { |
|
884 |
System.err.println("ZoneInfo: corrupted " + JAVAZM_FILE_NAME); |
|
885 |
return null; |
|
886 |
} |
|
887 |
||
888 |
if (excludeList != null) { |
|
889 |
excludedIDs = new SoftReference<List<String>>(excludeList); |
|
890 |
} else { |
|
891 |
hasNoExcludeList = true; |
|
892 |
} |
|
893 |
return excludeList; |
|
894 |
} |
|
895 |
||
896 |
private volatile static SoftReference<byte[]> rawOffsetIndices = null; |
|
897 |
||
898 |
static byte[] getRawOffsetIndices() { |
|
899 |
byte[] indices = null; |
|
900 |
||
901 |
SoftReference<byte[]> cache = rawOffsetIndices; |
|
902 |
if (cache != null) { |
|
903 |
indices = cache.get(); |
|
904 |
if (indices != null) { |
|
905 |
return indices; |
|
906 |
} |
|
907 |
} |
|
908 |
||
909 |
byte[] buf = getZoneInfoMappings(); |
|
910 |
int index = JAVAZM_LABEL_LENGTH + 1; |
|
911 |
int filesize = buf.length; |
|
912 |
||
913 |
try { |
|
914 |
loop: |
|
915 |
while (index < filesize) { |
|
916 |
byte tag = buf[index++]; |
|
917 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
918 |
||
919 |
switch (tag) { |
|
920 |
case TAG_RawOffsetIndices: |
|
921 |
{ |
|
922 |
indices = new byte[len]; |
|
923 |
for (int i = 0; i < len; i++) { |
|
924 |
indices[i] = buf[index++]; |
|
925 |
} |
|
926 |
} |
|
927 |
break loop; |
|
928 |
||
929 |
default: |
|
930 |
index += len; |
|
931 |
break; |
|
932 |
} |
|
933 |
} |
|
934 |
} catch (ArrayIndexOutOfBoundsException e) { |
|
935 |
System.err.println("ZoneInfo: corrupted " + JAVAZM_FILE_NAME); |
|
936 |
} |
|
937 |
||
938 |
rawOffsetIndices = new SoftReference<byte[]>(indices); |
|
939 |
return indices; |
|
940 |
} |
|
941 |
||
942 |
private volatile static SoftReference<int[]> rawOffsets = null; |
|
943 |
||
944 |
static int[] getRawOffsets() { |
|
945 |
int[] offsets = null; |
|
946 |
||
947 |
SoftReference<int[]> cache = rawOffsets; |
|
948 |
if (cache != null) { |
|
949 |
offsets = cache.get(); |
|
950 |
if (offsets != null) { |
|
951 |
return offsets; |
|
952 |
} |
|
953 |
} |
|
954 |
||
955 |
byte[] buf = getZoneInfoMappings(); |
|
956 |
int index = JAVAZM_LABEL_LENGTH + 1; |
|
957 |
int filesize = buf.length; |
|
958 |
||
959 |
try { |
|
960 |
loop: |
|
961 |
while (index < filesize) { |
|
962 |
byte tag = buf[index++]; |
|
963 |
int len = ((buf[index++] & 0xFF) << 8) + (buf[index++] & 0xFF); |
|
964 |
||
965 |
switch (tag) { |
|
966 |
case TAG_RawOffsets: |
|
967 |
{ |
|
968 |
int n = len/4; |
|
969 |
offsets = new int[n]; |
|
970 |
for (int i = 0; i < n; i++) { |
|
971 |
int val = buf[index++] & 0xff; |
|
972 |
val = (val << 8) + (buf[index++] & 0xff); |
|
973 |
val = (val << 8) + (buf[index++] & 0xff); |
|
974 |
val = (val << 8) + (buf[index++] & 0xff); |
|
975 |
offsets[i] = val; |
|
976 |
} |
|
977 |
} |
|
978 |
break loop; |
|
979 |
||
980 |
default: |
|
981 |
index += len; |
|
982 |
break; |
|
983 |
} |
|
984 |
} |
|
985 |
} catch (ArrayIndexOutOfBoundsException e) { |
|
986 |
System.err.println("ZoneInfo: corrupted " + JAVAZM_FILE_NAME); |
|
987 |
} |
|
988 |
||
989 |
rawOffsets = new SoftReference<int[]>(offsets); |
|
990 |
return offsets; |
|
991 |
} |
|
992 |
||
993 |
private volatile static SoftReference<byte[]> zoneInfoMappings = null; |
|
994 |
||
995 |
private static byte[] getZoneInfoMappings() { |
|
996 |
byte[] data; |
|
997 |
||
998 |
SoftReference<byte[]> cache = zoneInfoMappings; |
|
999 |
if (cache != null) { |
|
1000 |
data = cache.get(); |
|
1001 |
if (data != null) { |
|
1002 |
return data; |
|
1003 |
} |
|
1004 |
} |
|
1005 |
||
1006 |
data = readZoneInfoFile(JAVAZM_FILE_NAME); |
|
1007 |
||
1008 |
if (data == null) { |
|
1009 |
return null; |
|
1010 |
} |
|
1011 |
||
1012 |
int index; |
|
1013 |
for (index = 0; index < JAVAZM_LABEL.length; index++) { |
|
1014 |
if (data[index] != JAVAZM_LABEL[index]) { |
|
1015 |
System.err.println("ZoneInfo: wrong magic number: " + JAVAZM_FILE_NAME); |
|
1016 |
return null; |
|
1017 |
} |
|
1018 |
} |
|
1019 |
if (data[index++] > JAVAZM_VERSION) { |
|
1020 |
System.err.println("ZoneInfo: incompatible version (" |
|
1021 |
+ data[index - 1] + "): " + JAVAZM_FILE_NAME); |
|
1022 |
return null; |
|
1023 |
} |
|
1024 |
||
1025 |
zoneInfoMappings = new SoftReference<byte[]>(data); |
|
1026 |
return data; |
|
1027 |
} |
|
1028 |
||
1029 |
/** |
|
1030 |
* Reads the specified file under <java.home>/lib/zi into a buffer. |
|
1031 |
* @return the buffer, or null if any I/O error occurred. |
|
1032 |
*/ |
|
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1033 |
private static byte[] readZoneInfoFile(final String fileName) { |
2 | 1034 |
byte[] buffer = null; |
1035 |
||
1036 |
try { |
|
1037 |
buffer = (byte[]) AccessController.doPrivileged(new PrivilegedExceptionAction() { |
|
1038 |
public Object run() throws IOException { |
|
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1039 |
File file = new File(ziDir, fileName); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1040 |
if (!file.exists() || !file.isFile()) { |
2 | 1041 |
return null; |
1042 |
} |
|
4194
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1043 |
file = file.getCanonicalFile(); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1044 |
String path = file.getCanonicalPath(); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1045 |
byte[] buf = null; |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1046 |
if (path != null && path.startsWith(ziDir)) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1047 |
int filesize = (int)file.length(); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1048 |
if (filesize > 0) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1049 |
FileInputStream fis = new FileInputStream(file); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1050 |
buf = new byte[filesize]; |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1051 |
try { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1052 |
if (fis.read(buf) != filesize) { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1053 |
throw new IOException("read error on " + fileName); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1054 |
} |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1055 |
} finally { |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1056 |
fis.close(); |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1057 |
} |
eaf8321acdc1
6824265: (tz) TimeZone.getTimeZone allows probing local filesystem
okutsu
parents:
2
diff
changeset
|
1058 |
} |
2 | 1059 |
} |
1060 |
return buf; |
|
1061 |
} |
|
1062 |
}); |
|
1063 |
} catch (PrivilegedActionException e) { |
|
1064 |
Exception ex = e.getException(); |
|
1065 |
if (!(ex instanceof FileNotFoundException) || JAVAZM_FILE_NAME.equals(fileName)) { |
|
1066 |
System.err.println("ZoneInfo: " + ex.getMessage()); |
|
1067 |
} |
|
1068 |
} |
|
1069 |
return buffer; |
|
1070 |
} |
|
1071 |
} |