--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipConstants.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,253 @@
+/*
+ * Copyright (c) 2009, 2014, 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 jdk.nio.zipfs;
+
+/**
+ *
+ * @author Xueming Shen
+ */
+
+class ZipConstants {
+ /*
+ * Compression methods
+ */
+ static final int METHOD_STORED = 0;
+ static final int METHOD_DEFLATED = 8;
+ static final int METHOD_DEFLATED64 = 9;
+ static final int METHOD_BZIP2 = 12;
+ static final int METHOD_LZMA = 14;
+ static final int METHOD_LZ77 = 19;
+ static final int METHOD_AES = 99;
+
+ /*
+ * General purpose big flag
+ */
+ static final int FLAG_ENCRYPTED = 0x01;
+ static final int FLAG_DATADESCR = 0x08; // crc, size and csize in dd
+ static final int FLAG_EFS = 0x800; // If this bit is set the filename and
+ // comment fields for this file must be
+ // encoded using UTF-8.
+ /*
+ * Header signatures
+ */
+ static long LOCSIG = 0x04034b50L; // "PK\003\004"
+ static long EXTSIG = 0x08074b50L; // "PK\007\008"
+ static long CENSIG = 0x02014b50L; // "PK\001\002"
+ static long ENDSIG = 0x06054b50L; // "PK\005\006"
+
+ /*
+ * Header sizes in bytes (including signatures)
+ */
+ static final int LOCHDR = 30; // LOC header size
+ static final int EXTHDR = 16; // EXT header size
+ static final int CENHDR = 46; // CEN header size
+ static final int ENDHDR = 22; // END header size
+
+ /*
+ * Local file (LOC) header field offsets
+ */
+ static final int LOCVER = 4; // version needed to extract
+ static final int LOCFLG = 6; // general purpose bit flag
+ static final int LOCHOW = 8; // compression method
+ static final int LOCTIM = 10; // modification time
+ static final int LOCCRC = 14; // uncompressed file crc-32 value
+ static final int LOCSIZ = 18; // compressed size
+ static final int LOCLEN = 22; // uncompressed size
+ static final int LOCNAM = 26; // filename length
+ static final int LOCEXT = 28; // extra field length
+
+ /*
+ * Extra local (EXT) header field offsets
+ */
+ static final int EXTCRC = 4; // uncompressed file crc-32 value
+ static final int EXTSIZ = 8; // compressed size
+ static final int EXTLEN = 12; // uncompressed size
+
+ /*
+ * Central directory (CEN) header field offsets
+ */
+ static final int CENVEM = 4; // version made by
+ static final int CENVER = 6; // version needed to extract
+ static final int CENFLG = 8; // encrypt, decrypt flags
+ static final int CENHOW = 10; // compression method
+ static final int CENTIM = 12; // modification time
+ static final int CENCRC = 16; // uncompressed file crc-32 value
+ static final int CENSIZ = 20; // compressed size
+ static final int CENLEN = 24; // uncompressed size
+ static final int CENNAM = 28; // filename length
+ static final int CENEXT = 30; // extra field length
+ static final int CENCOM = 32; // comment length
+ static final int CENDSK = 34; // disk number start
+ static final int CENATT = 36; // internal file attributes
+ static final int CENATX = 38; // external file attributes
+ static final int CENOFF = 42; // LOC header offset
+
+ /*
+ * End of central directory (END) header field offsets
+ */
+ static final int ENDSUB = 8; // number of entries on this disk
+ static final int ENDTOT = 10; // total number of entries
+ static final int ENDSIZ = 12; // central directory size in bytes
+ static final int ENDOFF = 16; // offset of first CEN header
+ static final int ENDCOM = 20; // zip file comment length
+
+ /*
+ * ZIP64 constants
+ */
+ static final long ZIP64_ENDSIG = 0x06064b50L; // "PK\006\006"
+ static final long ZIP64_LOCSIG = 0x07064b50L; // "PK\006\007"
+ static final int ZIP64_ENDHDR = 56; // ZIP64 end header size
+ static final int ZIP64_LOCHDR = 20; // ZIP64 end loc header size
+ static final int ZIP64_EXTHDR = 24; // EXT header size
+ static final int ZIP64_EXTID = 0x0001; // Extra field Zip64 header ID
+
+ static final int ZIP64_MINVAL32 = 0xFFFF;
+ static final long ZIP64_MINVAL = 0xFFFFFFFFL;
+
+ /*
+ * Zip64 End of central directory (END) header field offsets
+ */
+ static final int ZIP64_ENDLEN = 4; // size of zip64 end of central dir
+ static final int ZIP64_ENDVEM = 12; // version made by
+ static final int ZIP64_ENDVER = 14; // version needed to extract
+ static final int ZIP64_ENDNMD = 16; // number of this disk
+ static final int ZIP64_ENDDSK = 20; // disk number of start
+ static final int ZIP64_ENDTOD = 24; // total number of entries on this disk
+ static final int ZIP64_ENDTOT = 32; // total number of entries
+ static final int ZIP64_ENDSIZ = 40; // central directory size in bytes
+ static final int ZIP64_ENDOFF = 48; // offset of first CEN header
+ static final int ZIP64_ENDEXT = 56; // zip64 extensible data sector
+
+ /*
+ * Zip64 End of central directory locator field offsets
+ */
+ static final int ZIP64_LOCDSK = 4; // disk number start
+ static final int ZIP64_LOCOFF = 8; // offset of zip64 end
+ static final int ZIP64_LOCTOT = 16; // total number of disks
+
+ /*
+ * Zip64 Extra local (EXT) header field offsets
+ */
+ static final int ZIP64_EXTCRC = 4; // uncompressed file crc-32 value
+ static final int ZIP64_EXTSIZ = 8; // compressed size, 8-byte
+ static final int ZIP64_EXTLEN = 16; // uncompressed size, 8-byte
+
+ /*
+ * Extra field header ID
+ */
+ static final int EXTID_ZIP64 = 0x0001; // ZIP64
+ static final int EXTID_NTFS = 0x000a; // NTFS
+ static final int EXTID_UNIX = 0x000d; // UNIX
+ static final int EXTID_EFS = 0x0017; // Strong Encryption
+ static final int EXTID_EXTT = 0x5455; // Info-ZIP Extended Timestamp
+
+ /*
+ * fields access methods
+ */
+ ///////////////////////////////////////////////////////
+ static final int CH(byte[] b, int n) {
+ return Byte.toUnsignedInt(b[n]);
+ }
+
+ static final int SH(byte[] b, int n) {
+ return Byte.toUnsignedInt(b[n]) | (Byte.toUnsignedInt(b[n + 1]) << 8);
+ }
+
+ static final long LG(byte[] b, int n) {
+ return ((SH(b, n)) | (SH(b, n + 2) << 16)) & 0xffffffffL;
+ }
+
+ static final long LL(byte[] b, int n) {
+ return (LG(b, n)) | (LG(b, n + 4) << 32);
+ }
+
+ static long getSig(byte[] b, int n) { return LG(b, n); }
+
+ private static boolean pkSigAt(byte[] b, int n, int b1, int b2) {
+ return b[n] == 'P' & b[n + 1] == 'K' & b[n + 2] == b1 & b[n + 3] == b2;
+ }
+
+ static boolean cenSigAt(byte[] b, int n) { return pkSigAt(b, n, 1, 2); }
+ static boolean locSigAt(byte[] b, int n) { return pkSigAt(b, n, 3, 4); }
+ static boolean endSigAt(byte[] b, int n) { return pkSigAt(b, n, 5, 6); }
+ static boolean extSigAt(byte[] b, int n) { return pkSigAt(b, n, 7, 8); }
+ static boolean end64SigAt(byte[] b, int n) { return pkSigAt(b, n, 6, 6); }
+ static boolean locator64SigAt(byte[] b, int n) { return pkSigAt(b, n, 6, 7); }
+
+ // local file (LOC) header fields
+ static final long LOCSIG(byte[] b) { return LG(b, 0); } // signature
+ static final int LOCVER(byte[] b) { return SH(b, 4); } // version needed to extract
+ static final int LOCFLG(byte[] b) { return SH(b, 6); } // general purpose bit flags
+ static final int LOCHOW(byte[] b) { return SH(b, 8); } // compression method
+ static final long LOCTIM(byte[] b) { return LG(b, 10);} // modification time
+ static final long LOCCRC(byte[] b) { return LG(b, 14);} // crc of uncompressed data
+ static final long LOCSIZ(byte[] b) { return LG(b, 18);} // compressed data size
+ static final long LOCLEN(byte[] b) { return LG(b, 22);} // uncompressed data size
+ static final int LOCNAM(byte[] b) { return SH(b, 26);} // filename length
+ static final int LOCEXT(byte[] b) { return SH(b, 28);} // extra field length
+
+ // extra local (EXT) header fields
+ static final long EXTCRC(byte[] b) { return LG(b, 4);} // crc of uncompressed data
+ static final long EXTSIZ(byte[] b) { return LG(b, 8);} // compressed size
+ static final long EXTLEN(byte[] b) { return LG(b, 12);} // uncompressed size
+
+ // end of central directory header (END) fields
+ static final int ENDSUB(byte[] b) { return SH(b, 8); } // number of entries on this disk
+ static final int ENDTOT(byte[] b) { return SH(b, 10);} // total number of entries
+ static final long ENDSIZ(byte[] b) { return LG(b, 12);} // central directory size
+ static final long ENDOFF(byte[] b) { return LG(b, 16);} // central directory offset
+ static final int ENDCOM(byte[] b) { return SH(b, 20);} // size of zip file comment
+ static final int ENDCOM(byte[] b, int off) { return SH(b, off + 20);}
+
+ // zip64 end of central directory recoder fields
+ static final long ZIP64_ENDTOD(byte[] b) { return LL(b, 24);} // total number of entries on disk
+ static final long ZIP64_ENDTOT(byte[] b) { return LL(b, 32);} // total number of entries
+ static final long ZIP64_ENDSIZ(byte[] b) { return LL(b, 40);} // central directory size
+ static final long ZIP64_ENDOFF(byte[] b) { return LL(b, 48);} // central directory offset
+ static final long ZIP64_LOCOFF(byte[] b) { return LL(b, 8);} // zip64 end offset
+
+ // central directory header (CEN) fields
+ static final long CENSIG(byte[] b, int pos) { return LG(b, pos + 0); }
+ static final int CENVEM(byte[] b, int pos) { return SH(b, pos + 4); }
+ static final int CENVER(byte[] b, int pos) { return SH(b, pos + 6); }
+ static final int CENFLG(byte[] b, int pos) { return SH(b, pos + 8); }
+ static final int CENHOW(byte[] b, int pos) { return SH(b, pos + 10);}
+ static final long CENTIM(byte[] b, int pos) { return LG(b, pos + 12);}
+ static final long CENCRC(byte[] b, int pos) { return LG(b, pos + 16);}
+ static final long CENSIZ(byte[] b, int pos) { return LG(b, pos + 20);}
+ static final long CENLEN(byte[] b, int pos) { return LG(b, pos + 24);}
+ static final int CENNAM(byte[] b, int pos) { return SH(b, pos + 28);}
+ static final int CENEXT(byte[] b, int pos) { return SH(b, pos + 30);}
+ static final int CENCOM(byte[] b, int pos) { return SH(b, pos + 32);}
+ static final int CENDSK(byte[] b, int pos) { return SH(b, pos + 34);}
+ static final int CENATT(byte[] b, int pos) { return SH(b, pos + 36);}
+ static final long CENATX(byte[] b, int pos) { return LG(b, pos + 38);}
+ static final long CENOFF(byte[] b, int pos) { return LG(b, pos + 42);}
+
+ /* The END header is followed by a variable length comment of size < 64k. */
+ static final long END_MAXLEN = 0xFFFF + ENDHDR;
+ static final int READBLOCKSZ = 128;
+}