| /* |
| * Copyright (c) 1995, 2010, 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. |
| */ |
| |
| /* |
| * Prototypes for zip file support |
| */ |
| |
| #ifndef _ZIP_H_ |
| #define _ZIP_H_ |
| |
| /* |
| * Header signatures |
| */ |
| #define LOCSIG 0x04034b50L /* "PK\003\004" */ |
| #define EXTSIG 0x08074b50L /* "PK\007\008" */ |
| #define CENSIG 0x02014b50L /* "PK\001\002" */ |
| #define ENDSIG 0x06054b50L /* "PK\005\006" */ |
| |
| #define ZIP64_ENDSIG 0x06064b50L /* "PK\006\006" */ |
| #define ZIP64_LOCSIG 0x07064b50L /* "PK\006\007" */ |
| |
| /* |
| * Header sizes including signatures |
| */ |
| |
| #define LOCHDR 30 |
| #define EXTHDR 16 |
| #define CENHDR 46 |
| #define ENDHDR 22 |
| |
| #define ZIP64_ENDHDR 56 // ZIP64 end header size |
| #define ZIP64_LOCHDR 20 // ZIP64 end loc header size |
| #define ZIP64_EXTHDR 24 // EXT header size |
| #define ZIP64_EXTID 1 // Extra field Zip64 header ID |
| |
| #define ZIP64_MAGICVAL 0xffffffffLL |
| #define ZIP64_MAGICCOUNT 0xffff |
| |
| |
| /* |
| * Header field access macros |
| */ |
| #define CH(b, n) (((unsigned char *)(b))[n]) |
| #define SH(b, n) (CH(b, n) | (CH(b, n+1) << 8)) |
| #define LG(b, n) ((SH(b, n) | (SH(b, n+2) << 16)) &0xffffffffUL) |
| #define LL(b, n) (((jlong)LG(b, n)) | (((jlong)LG(b, n+4)) << 32)) |
| #define GETSIG(b) LG(b, 0) |
| |
| /* |
| * Macros for getting local file (LOC) header fields |
| */ |
| #define LOCVER(b) SH(b, 4) /* version needed to extract */ |
| #define LOCFLG(b) SH(b, 6) /* general purpose bit flags */ |
| #define LOCHOW(b) SH(b, 8) /* compression method */ |
| #define LOCTIM(b) LG(b, 10) /* modification time */ |
| #define LOCCRC(b) LG(b, 14) /* crc of uncompressed data */ |
| #define LOCSIZ(b) LG(b, 18) /* compressed data size */ |
| #define LOCLEN(b) LG(b, 22) /* uncompressed data size */ |
| #define LOCNAM(b) SH(b, 26) /* filename length */ |
| #define LOCEXT(b) SH(b, 28) /* extra field length */ |
| |
| /* |
| * Macros for getting extra local (EXT) header fields |
| */ |
| #define EXTCRC(b) LG(b, 4) /* crc of uncompressed data */ |
| #define EXTSIZ(b) LG(b, 8) /* compressed size */ |
| #define EXTLEN(b) LG(b, 12) /* uncompressed size */ |
| |
| /* |
| * Macros for getting central directory header (CEN) fields |
| */ |
| #define CENVEM(b) SH(b, 4) /* version made by */ |
| #define CENVER(b) SH(b, 6) /* version needed to extract */ |
| #define CENFLG(b) SH(b, 8) /* general purpose bit flags */ |
| #define CENHOW(b) SH(b, 10) /* compression method */ |
| #define CENTIM(b) LG(b, 12) /* modification time */ |
| #define CENCRC(b) LG(b, 16) /* crc of uncompressed data */ |
| #define CENSIZ(b) LG(b, 20) /* compressed size */ |
| #define CENLEN(b) LG(b, 24) /* uncompressed size */ |
| #define CENNAM(b) SH(b, 28) /* length of filename */ |
| #define CENEXT(b) SH(b, 30) /* length of extra field */ |
| #define CENCOM(b) SH(b, 32) /* file comment length */ |
| #define CENDSK(b) SH(b, 34) /* disk number start */ |
| #define CENATT(b) SH(b, 36) /* internal file attributes */ |
| #define CENATX(b) LG(b, 38) /* external file attributes */ |
| #define CENOFF(b) LG(b, 42) /* offset of local header */ |
| |
| /* |
| * Macros for getting end of central directory header (END) fields |
| */ |
| #define ENDSUB(b) SH(b, 8) /* number of entries on this disk */ |
| #define ENDTOT(b) SH(b, 10) /* total number of entries */ |
| #define ENDSIZ(b) LG(b, 12) /* central directory size */ |
| #define ENDOFF(b) LG(b, 16) /* central directory offset */ |
| #define ENDCOM(b) SH(b, 20) /* size of zip file comment */ |
| |
| /* |
| * Macros for getting Zip64 end of central directory header fields |
| */ |
| #define ZIP64_ENDLEN(b) LL(b, 4) /* size of zip64 end of central dir */ |
| #define ZIP64_ENDVEM(b) SH(b, 12) /* version made by */ |
| #define ZIP64_ENDVER(b) SH(b, 14) /* version needed to extract */ |
| #define ZIP64_ENDNMD(b) LG(b, 16) /* number of this disk */ |
| #define ZIP64_ENDDSK(b) LG(b, 20) /* disk number of start */ |
| #define ZIP64_ENDTOD(b) LL(b, 24) /* total number of entries on this disk */ |
| #define ZIP64_ENDTOT(b) LL(b, 32) /* total number of entries */ |
| #define ZIP64_ENDSIZ(b) LL(b, 40) /* central directory size in bytes */ |
| #define ZIP64_ENDOFF(b) LL(b, 48) /* offset of first CEN header */ |
| |
| /* |
| * Macros for getting Zip64 end of central directory locator fields |
| */ |
| #define ZIP64_LOCDSK(b) LG(b, 4) /* disk number start */ |
| #define ZIP64_LOCOFF(b) LL(b, 8) /* offset of zip64 end */ |
| #define ZIP64_LOCTOT(b) LG(b, 16) /* total number of disks */ |
| |
| /* |
| * Supported compression methods |
| */ |
| #define STORED 0 |
| #define DEFLATED 8 |
| |
| /* |
| * Support for reading ZIP/JAR files. Some things worth noting: |
| * |
| * - Zip file entries larger than 2**32 bytes are not supported. |
| * - jzentry time and crc fields are signed even though they really |
| * represent unsigned quantities. |
| * - If csize is zero then the entry is uncompressed. |
| * - If extra != 0 then the first two bytes are the length of the extra |
| * data in intel byte order. |
| * - If pos <= 0 then it is the position of entry LOC header. |
| * If pos > 0 then it is the position of entry data. |
| * pos should not be accessed directly, but only by ZIP_GetEntryDataOffset. |
| */ |
| |
| typedef struct jzentry { /* Zip file entry */ |
| char *name; /* entry name */ |
| jlong time; /* modification time */ |
| jlong size; /* size of uncompressed data */ |
| jlong csize; /* size of compressed data (zero if uncompressed) */ |
| jint crc; /* crc of uncompressed data */ |
| char *comment; /* optional zip file comment */ |
| jbyte *extra; /* optional extra data */ |
| jlong pos; /* position of LOC header or entry data */ |
| jint flag; /* general purpose flag */ |
| } jzentry; |
| |
| /* |
| * In-memory hash table cell. |
| * In a typical system we have a *lot* of these, as we have one for |
| * every entry in every active JAR. |
| * Note that in order to save space we don't keep the name in memory, |
| * but merely remember a 32 bit hash. |
| */ |
| typedef struct jzcell { |
| unsigned int hash; /* 32 bit hashcode on name */ |
| unsigned int next; /* hash chain: index into jzfile->entries */ |
| jlong cenpos; /* Offset of central directory file header */ |
| } jzcell; |
| |
| typedef struct cencache { |
| char *data; /* A cached page of CEN headers */ |
| jlong pos; /* file offset of data */ |
| } cencache; |
| |
| /* |
| * Use ZFILE to represent access to a file in a platform-indepenent |
| * fashion. |
| */ |
| #ifdef WIN32 |
| #define ZFILE jlong |
| #else |
| #define ZFILE int |
| #endif |
| |
| /* |
| * Descriptor for a ZIP file. |
| */ |
| typedef struct jzfile { /* Zip file */ |
| char *name; /* zip file name */ |
| jint refs; /* number of active references */ |
| jlong len; /* length (in bytes) of zip file */ |
| #ifdef USE_MMAP |
| unsigned char *maddr; /* beginning address of the CEN & ENDHDR */ |
| jlong mlen; /* length (in bytes) mmaped */ |
| jlong offset; /* offset of the mmapped region from the |
| start of the file. */ |
| jboolean usemmap; /* if mmap is used. */ |
| #endif |
| jboolean locsig; /* if zip file starts with LOCSIG */ |
| cencache cencache; /* CEN header cache */ |
| ZFILE zfd; /* open file descriptor */ |
| void *lock; /* read lock */ |
| char *comment; /* zip file comment */ |
| jint clen; /* length of the zip file comment */ |
| char *msg; /* zip error message */ |
| jzcell *entries; /* array of hash cells */ |
| jint total; /* total number of entries */ |
| jint *table; /* Hash chain heads: indexes into entries */ |
| jint tablelen; /* number of hash heads */ |
| struct jzfile *next; /* next zip file in search list */ |
| jzentry *cache; /* we cache the most recently freed jzentry */ |
| /* Information on metadata names in META-INF directory */ |
| char **metanames; /* array of meta names (may have null names) */ |
| jint metacurrent; /* the next empty slot in metanames array */ |
| jint metacount; /* number of slots in metanames array */ |
| jlong lastModified; /* last modified time */ |
| jlong locpos; /* position of first LOC header (usually 0) */ |
| } jzfile; |
| |
| /* |
| * Index representing end of hash chain |
| */ |
| #define ZIP_ENDCHAIN ((jint)-1) |
| |
| jzentry * JNICALL |
| ZIP_FindEntry(jzfile *zip, char *name, jint *sizeP, jint *nameLenP); |
| |
| jboolean JNICALL |
| ZIP_ReadEntry(jzfile *zip, jzentry *entry, unsigned char *buf, char *entrynm); |
| |
| jzentry * JNICALL |
| ZIP_GetNextEntry(jzfile *zip, jint n); |
| |
| jzfile * JNICALL |
| ZIP_Open(const char *name, char **pmsg); |
| |
| jzfile * |
| ZIP_Open_Generic(const char *name, char **pmsg, int mode, jlong lastModified); |
| |
| jzfile * |
| ZIP_Get_From_Cache(const char *name, char **pmsg, jlong lastModified); |
| |
| jzfile * |
| ZIP_Put_In_Cache(const char *name, ZFILE zfd, char **pmsg, jlong lastModified); |
| |
| jzfile * |
| ZIP_Put_In_Cache0(const char *name, ZFILE zfd, char **pmsg, jlong lastModified, jboolean usemmap); |
| |
| void JNICALL |
| ZIP_Close(jzfile *zip); |
| |
| jzentry * ZIP_GetEntry(jzfile *zip, char *name, jint ulen); |
| void ZIP_Lock(jzfile *zip); |
| void ZIP_Unlock(jzfile *zip); |
| jint ZIP_Read(jzfile *zip, jzentry *entry, jlong pos, void *buf, jint len); |
| void ZIP_FreeEntry(jzfile *zip, jzentry *ze); |
| jlong ZIP_GetEntryDataOffset(jzfile *zip, jzentry *entry); |
| |
| #endif /* !_ZIP_H_ */ |
