1 /* 2 * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.util.zip; 27 28 /* 29 * This interface defines the constants that are used by the classes 30 * which manipulate ZIP files. 31 * 32 * @author David Connelly 33 * @since 1.1 34 */ 35 interface ZipConstants { 36 /* 37 * Header signatures 38 */ 39 static long LOCSIG = 0x04034b50L; // "PK\003\004" 40 static long EXTSIG = 0x08074b50L; // "PK\007\008" 41 static long CENSIG = 0x02014b50L; // "PK\001\002" 42 static long ENDSIG = 0x06054b50L; // "PK\005\006" 43 44 /* 45 * Header sizes in bytes (including signatures) 46 */ 47 static final int LOCHDR = 30; // LOC header size 48 static final int EXTHDR = 16; // EXT header size 49 static final int CENHDR = 46; // CEN header size 50 static final int ENDHDR = 22; // END header size 51 52 /* 53 * Local file (LOC) header field offsets 54 */ 55 static final int LOCVER = 4; // version needed to extract 56 static final int LOCFLG = 6; // general purpose bit flag 57 static final int LOCHOW = 8; // compression method 58 static final int LOCTIM = 10; // modification time 59 static final int LOCCRC = 14; // uncompressed file crc-32 value 60 static final int LOCSIZ = 18; // compressed size 61 static final int LOCLEN = 22; // uncompressed size 62 static final int LOCNAM = 26; // filename length 63 static final int LOCEXT = 28; // extra field length 64 65 /* 66 * Extra local (EXT) header field offsets 67 */ 68 static final int EXTCRC = 4; // uncompressed file crc-32 value 69 static final int EXTSIZ = 8; // compressed size 70 static final int EXTLEN = 12; // uncompressed size 71 72 /* 73 * Central directory (CEN) header field offsets 74 */ 75 static final int CENVEM = 4; // version made by 76 static final int CENVER = 6; // version needed to extract 77 static final int CENFLG = 8; // encrypt, decrypt flags 78 static final int CENHOW = 10; // compression method 79 static final int CENTIM = 12; // modification time 80 static final int CENCRC = 16; // uncompressed file crc-32 value 81 static final int CENSIZ = 20; // compressed size 82 static final int CENLEN = 24; // uncompressed size 83 static final int CENNAM = 28; // filename length 84 static final int CENEXT = 30; // extra field length 85 static final int CENCOM = 32; // comment length 86 static final int CENDSK = 34; // disk number start 87 static final int CENATT = 36; // internal file attributes 88 static final int CENATX = 38; // external file attributes 89 static final int CENOFF = 42; // LOC header offset 90 91 /* 92 * End of central directory (END) header field offsets 93 */ 94 static final int ENDSUB = 8; // number of entries on this disk 95 static final int ENDTOT = 10; // total number of entries 96 static final int ENDSIZ = 12; // central directory size in bytes 97 static final int ENDOFF = 16; // offset of first CEN header 98 static final int ENDCOM = 20; // zip file comment length 99 } 100