1 /* 2 * Copyright (c) 2003, 2018, 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 #ifndef _MANIFEST_INFO_H 27 #define _MANIFEST_INFO_H 28 29 #include <sys/types.h> 30 #include "jni.h" 31 32 /* 33 * Zip file header signatures 34 */ 35 #define SIGSIZ 4 /* size of all header signatures */ 36 37 #define PKZIP_SIGNATURE_AT(p, b2, b3) \ 38 (((p)[0] == 'P') & ((p)[1] == 'K') & ((p)[2] == b2) & ((p)[3] == b3)) 39 #define CENSIG_AT(p) PKZIP_SIGNATURE_AT(p, 1, 2) 40 #define LOCSIG_AT(p) PKZIP_SIGNATURE_AT(p, 3, 4) 41 #define ENDSIG_AT(p) PKZIP_SIGNATURE_AT(p, 5, 6) 42 #define EXTSIG_AT(p) PKZIP_SIGNATURE_AT(p, 7, 8) 43 #define ZIP64_ENDSIG_AT(p) PKZIP_SIGNATURE_AT(p, 6, 6) 44 #define ZIP64_LOCSIG_AT(p) PKZIP_SIGNATURE_AT(p, 6, 7) 45 46 /* 47 * Header sizes including signatures 48 */ 49 #define LOCHDR 30 50 #define EXTHDR 16 51 #define CENHDR 46 52 #define ENDHDR 22 53 54 #define ZIP64_ENDHDR 56 // ZIP64 end header size 55 #define ZIP64_LOCHDR 20 // ZIP64 end loc header size 56 #define ZIP64_EXTHDR 24 // EXT header size 57 #define ZIP64_EXTID 1 // Extra field Zip64 header ID 58 59 #define ZIP64_MAGICVAL 0xffffffffLL 60 #define ZIP64_MAGICCOUNT 0xffff 61 62 /* 63 * Header field access macros 64 */ 65 #define CH(b, n) (((unsigned char *)(b))[n]) 66 #define SH(b, n) (CH(b, n) | (CH(b, n+1) << 8)) 67 #define LG(b, n) ((SH(b, n) | (SH(b, n+2) << 16)) &0xffffffffUL) 68 #define LL(b, n) (((jlong)LG(b, n)) | (((jlong)LG(b, n+4)) << 32)) 69 #define GETSIG(b) LG(b, 0) 70 71 /* 72 * Macros for getting local file (LOC) header fields 73 */ 74 #define LOCVER(b) SH(b, 4) /* version needed to extract */ 75 #define LOCFLG(b) SH(b, 6) /* general purpose bit flags */ 76 #define LOCHOW(b) SH(b, 8) /* compression method */ 77 #define LOCTIM(b) LG(b, 10) /* modification time */ 78 #define LOCCRC(b) LG(b, 14) /* crc of uncompressed data */ 79 #define LOCSIZ(b) LG(b, 18) /* compressed data size */ 80 #define LOCLEN(b) LG(b, 22) /* uncompressed data size */ 81 #define LOCNAM(b) SH(b, 26) /* filename length */ 82 #define LOCEXT(b) SH(b, 28) /* extra field length */ 83 84 /* 85 * Macros for getting extra local (EXT) header fields 86 */ 87 #define EXTCRC(b) LG(b, 4) /* crc of uncompressed data */ 88 #define EXTSIZ(b) LG(b, 8) /* compressed size */ 89 #define EXTLEN(b) LG(b, 12) /* uncompressed size */ 90 91 /* 92 * Macros for getting central directory header (CEN) fields 93 */ 94 #define CENVEM(b) SH(b, 4) /* version made by */ 95 #define CENVER(b) SH(b, 6) /* version needed to extract */ 96 #define CENFLG(b) SH(b, 8) /* general purpose bit flags */ 97 #define CENHOW(b) SH(b, 10) /* compression method */ 98 #define CENTIM(b) LG(b, 12) /* modification time */ 99 #define CENCRC(b) LG(b, 16) /* crc of uncompressed data */ 100 #define CENSIZ(b) LG(b, 20) /* compressed size */ 101 #define CENLEN(b) LG(b, 24) /* uncompressed size */ 102 #define CENNAM(b) SH(b, 28) /* length of filename */ 103 #define CENEXT(b) SH(b, 30) /* length of extra field */ 104 #define CENCOM(b) SH(b, 32) /* file comment length */ 105 #define CENDSK(b) SH(b, 34) /* disk number start */ 106 #define CENATT(b) SH(b, 36) /* internal file attributes */ 107 #define CENATX(b) LG(b, 38) /* external file attributes */ 108 #define CENOFF(b) LG(b, 42) /* offset of local header */ 109 110 /* 111 * Macros for getting end of central directory header (END) fields 112 */ 113 #define ENDNMD(b) SH(b, 4) /* number of this disk */ 114 #define ENDDSK(b) SH(b, 6) /* disk number of start */ 115 #define ENDSUB(b) SH(b, 8) /* number of entries on this disk */ 116 #define ENDTOT(b) SH(b, 10) /* total number of entries */ 117 #define ENDSIZ(b) LG(b, 12) /* central directory size */ 118 #define ENDOFF(b) LG(b, 16) /* central directory offset */ 119 #define ENDCOM(b) SH(b, 20) /* size of zip file comment */ 120 121 /* 122 * Macros for getting Zip64 end of central directory header fields 123 */ 124 #define ZIP64_ENDLEN(b) LL(b, 4) /* size of zip64 end of central dir */ 125 #define ZIP64_ENDVEM(b) SH(b, 12) /* version made by */ 126 #define ZIP64_ENDVER(b) SH(b, 14) /* version needed to extract */ 127 #define ZIP64_ENDNMD(b) LG(b, 16) /* number of this disk */ 128 #define ZIP64_ENDDSK(b) LG(b, 20) /* disk number of start */ 129 #define ZIP64_ENDTOD(b) LL(b, 24) /* total number of entries on this disk */ 130 #define ZIP64_ENDTOT(b) LL(b, 32) /* total number of entries */ 131 #define ZIP64_ENDSIZ(b) LL(b, 40) /* central directory size in bytes */ 132 #define ZIP64_ENDOFF(b) LL(b, 48) /* offset of first CEN header */ 133 134 /* 135 * Macros for getting Zip64 end of central directory locator fields 136 */ 137 #define ZIP64_LOCDSK(b) LG(b, 4) /* disk number start */ 138 #define ZIP64_LOCOFF(b) LL(b, 8) /* offset of zip64 end */ 139 #define ZIP64_LOCTOT(b) LG(b, 16) /* total number of disks */ 140 141 /* 142 * A comment of maximum length of 64kb can follow the END record. This 143 * is the furthest the END record can be from the end of the file. 144 */ 145 #define END_MAXLEN (0xFFFF + ENDHDR) 146 147 /* 148 * Supported compression methods. 149 */ 150 #define STORED 0 151 #define DEFLATED 8 152 153 /* 154 * Information from the CEN entry to inflate a file. 155 */ 156 typedef struct zentry { /* Zip file entry */ 157 size_t isize; /* size of inflated data */ 158 size_t csize; /* size of compressed data (zero if uncompressed) */ 159 jlong offset; /* position of compressed data */ 160 int how; /* compression method (if any) */ 161 } zentry; 162 163 /* 164 * Information returned from the Manifest file by the ParseManifest() routine. 165 * Certainly (much) more could be returned, but this is the information 166 * currently of interest to the C based Java utilities (particularly the 167 * Java launcher). 168 */ 169 typedef struct manifest_info { /* Interesting fields from the Manifest */ 170 char *manifest_version; /* Manifest-Version string */ 171 char *main_class; /* Main-Class entry */ 172 char *jre_version; /* Appropriate J2SE release spec */ 173 char jre_restrict_search; /* Restricted JRE search */ 174 char *splashscreen_image_file_name; /* splashscreen image file */ 175 } manifest_info; 176 177 /* 178 * Attribute closure to provide to manifest_iterate. 179 */ 180 typedef void (*attribute_closure)(const char *name, const char *value, 181 void *user_data); 182 183 /* 184 * Function prototypes. 185 */ 186 int JLI_ParseManifest(char *jarfile, manifest_info *info); 187 void *JLI_JarUnpackFile(const char *jarfile, const char *filename, 188 int *size); 189 void JLI_FreeManifest(void); 190 191 JNIEXPORT int JNICALL 192 JLI_ManifestIterate(const char *jarfile, attribute_closure ac, 193 void *user_data); 194 195 #endif /* _MANIFEST_INFO_H */ 196