1 /*
2 * Copyright (c) 1995, 2020, 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 /**
38 * Local file (LOC) header signature.
39 */
40 static long LOCSIG = 0x04034b50L; // "PK\003\004"
41
42 /**
43 * Extra local (EXT) header signature.
44 */
45 static long EXTSIG = 0x08074b50L; // "PK\007\008"
46
47 /**
48 * Central directory (CEN) header signature.
49 */
50 static long CENSIG = 0x02014b50L; // "PK\001\002"
51
52 /**
53 * End of central directory (END) header signature.
54 */
55 static long ENDSIG = 0x06054b50L; // "PK\005\006"
56
57 /**
58 * Local file (LOC) header size in bytes (including signature).
59 */
60 static final int LOCHDR = 30;
61
62 /**
63 * Extra local (EXT) header size in bytes (including signature).
64 */
65 static final int EXTHDR = 16;
66
67 /**
68 * Central directory (CEN) header size in bytes (including signature).
69 */
70 static final int CENHDR = 46;
71
72 /**
73 * End of central directory (END) header size in bytes (including signature).
74 */
75 static final int ENDHDR = 22;
76
77 /**
78 * Local file (LOC) header version needed to extract field offset.
79 */
80 static final int LOCVER = 4;
81
82 /**
83 * Local file (LOC) header general purpose bit flag field offset.
84 */
85 static final int LOCFLG = 6;
86
87 /**
88 * Local file (LOC) header compression method field offset.
89 */
90 static final int LOCHOW = 8;
91
92 /**
93 * Local file (LOC) header modification time field offset.
94 */
95 static final int LOCTIM = 10;
96
97 /**
98 * Local file (LOC) header uncompressed file crc-32 value field offset.
99 */
100 static final int LOCCRC = 14;
101
102 /**
103 * Local file (LOC) header compressed size field offset.
104 */
105 static final int LOCSIZ = 18;
106
107 /**
108 * Local file (LOC) header uncompressed size field offset.
109 */
110 static final int LOCLEN = 22;
111
112 /**
113 * Local file (LOC) header filename length field offset.
114 */
115 static final int LOCNAM = 26;
116
117 /**
118 * Local file (LOC) header extra field length field offset.
119 */
120 static final int LOCEXT = 28;
121
122 /**
123 * Extra local (EXT) header uncompressed file crc-32 value field offset.
124 */
125 static final int EXTCRC = 4;
126
127 /**
128 * Extra local (EXT) header compressed size field offset
129 */
130 static final int EXTSIZ = 8;
131
132 /**
133 * Extra local (EXT) header uncompressed size field offset
134 */
135 static final int EXTLEN = 12;
136
137 /**
138 * Central directory (CEN) header version made by field offset.
139 */
140 static final int CENVEM = 4;
141
142 /**
143 * Central directory (CEN) header version needed to extract field offset.
144 */
145 static final int CENVER = 6;
146
147 /**
148 * Central directory (CEN) header encrypt, decrypt flags field offset.
149 */
150 static final int CENFLG = 8;
151
152 /**
153 * Central directory (CEN) header compression method field offset.
154 */
155 static final int CENHOW = 10;
156
157 /**
158 * Central directory (CEN) header modification time field offset.
159 */
160 static final int CENTIM = 12;
161
162 /**
163 * Central directory (CEN) header uncompressed file crc-32 value field offset.
164 */
165 static final int CENCRC = 16;
166
167 /**
168 * Central directory (CEN) header compressed size field offset.
169 */
170 static final int CENSIZ = 20;
171
172 /**
173 * Central directory (CEN) header uncompressed size field offset.
174 */
175 static final int CENLEN = 24;
176
177 /**
178 * Central directory (CEN) header filename length field offset.
179 */
180 static final int CENNAM = 28;
181
182 /**
183 * Central directory (CEN) header extra field length field offset.
184 */
185 static final int CENEXT = 30;
186
187 /**
188 * Central directory (CEN) header comment length field offset.
189 */
190 static final int CENCOM = 32;
191
192 /**
193 * Central directory (CEN) header disk number start field offset.
194 */
195 static final int CENDSK = 34;
196
197 /**
198 * Central directory (CEN) header internal file attributes field offset.
199 */
200 static final int CENATT = 36;
201
202 /**
203 * Central directory (CEN) header external file attributes field offset.
204 */
205 static final int CENATX = 38;
206
207 /**
208 * Central directory (CEN) header LOC header offset field offset.
209 */
210 static final int CENOFF = 42;
211
212 /**
213 * End of central directory (END) header number of entries on this disk field offset.
214 */
215 static final int ENDSUB = 8;
216
217 /**
218 * End of central directory (END) header total number of entries field offset.
219 */
220 static final int ENDTOT = 10;
221
222 /**
223 * End of central directory (END) header central directory size in bytes field offset.
224 */
225 static final int ENDSIZ = 12;
226
227 /**
228 * End of central directory (END) header offset for the first CEN header field offset.
229 */
230 static final int ENDOFF = 16;
231
232 /**
233 * End of central directory (END) header zip file comment length field offset.
234 */
235 static final int ENDCOM = 20;
236 }