1 #ifndef __INKJAR_JAR_H_
2 #define __INKJAR_JAR_H_
3 /*
4 * Copyright (C) 1999 Bryan Burns
5 * Copyright (C) 2004 Johan Ceuppens
6 * Released under GNU GPL, read the file 'COPYING' for more information
7 */
9 #ifdef HAVE_CONFIG_H
10 # include "config.h"
11 #endif
13 #ifdef HAVE_ZLIB_H
14 # include <zlib.h>
15 #endif
17 #ifdef HAVE_STDINT_H
18 # include <stdint.h>
19 #else
20 # include <inttypes.h>
21 #endif
23 #include <glib/garray.h>
24 #include <glib/gtypes.h>
26 namespace Inkjar {
28 unsigned const RDSZ = 4096;
30 //#define DEBUG 1 //uncommment for debug messages
32 enum JarFileReaderState {CLOSED, OPEN};
34 //fixme: The following will be removed
35 typedef uint8_t ub1;
36 typedef uint16_t ub2;
37 typedef uint32_t ub4;
39 #define LOC_EXTRA 6 /* extra bytes */
40 #define LOC_COMP 8 /* compression method */
41 #define LOC_MODTIME 10 /* last modification time */
42 #define LOC_MODDATE 12 /* last modification date */
43 #define LOC_CRC 14 /* CRC */
44 #define LOC_CSIZE 18 /* compressed size */
45 #define LOC_USIZE 22 /* uncompressed size */
46 #define LOC_FNLEN 26 /* filename length */
47 #define LOC_EFLEN 28 /* extra-field length */
49 #define CEN_COMP 10 /* compression method */
50 #define CEN_MODTIME 12
51 #define CEN_MODDATE 14
52 #define CEN_CRC 16
53 #define CEN_CSIZE 20
54 #define CEN_USIZE 24
55 #define CEN_FNLEN 28
56 #define CEN_EFLEN 30
57 #define CEN_COMLEN 32
58 #define CEN_OFFSET 42
61 /* macros */
62 #define PACK_UB4(d, o, v) d[o] = (ub1)((v) & 0x000000ff); \
63 d[o + 1] = (ub1)(((v) & 0x0000ff00) >> 8); \
64 d[o + 2] = (ub1)(((v) & 0x00ff0000) >> 16); \
65 d[o + 3] = (ub1)(((v) & 0xff000000) >> 24)
67 #define PACK_UB2(d, o, v) d[o] = (ub1)((v) & 0x00ff); \
68 d[o + 1] = (ub1)(((v) & 0xff00) >> 8)
70 #define UNPACK_UB4(s, o) (ub4)s[o] + (((ub4)s[o + 1]) << 8) +\
71 (((ub4)s[o + 2]) << 16) + (((ub4)s[o + 3]) << 24)
73 #define UNPACK_UB2(s, o) (ub2)s[o] + (((ub2)s[o + 1]) << 8)
77 /*
78 * JarFile:
79 *
80 * This is a wrapper class for canonical jarfile functions like reading,
81 * writing, seeking etc. JarFile is a dumb class with no state information.
82 *
83 * All memory allocations are done with g_malloc.
84 */
86 class JarFile {
87 public:
89 JarFile() : fd(-1), _filename(NULL), _last_filename(NULL) {}
90 virtual ~JarFile();
91 JarFile(gchar const *new_filename);
93 GByteArray *get_next_file_contents();
94 gchar *get_last_filename() const;
95 bool open();
96 bool close();
97 int read(guint8 *buf, int count);
99 JarFile(JarFile const &rhs);
100 JarFile &operator=(JarFile const &rhs);
102 private:
104 int fd;
105 gchar *_filename;
106 z_stream _zs;
107 gchar *_last_filename;
109 bool init_inflation();
110 bool read_signature();
111 guint32 get_crc(guint8 *bytes, guint16 flags);
112 guint8 *read_filename(guint16 filename_length);
113 bool check_compression_method(guint16 method, guint16 flags);
114 bool check_crc(guint32 oldcrc, guint32 crc, guint16 flags);
115 guint8 *get_compressed_file(guint32 compressed_size,
116 unsigned int &file_length,
117 guint32 oldcrc, guint16 flags);
118 guint8 *get_uncompressed_file(guint32 compressed_szie, guint32 crc,
119 guint16 eflen, guint16 flags);
120 }; // class JarFile
123 /*
124 * JarFileReader:
125 *
126 * This provides some smarter functions for operating on a jarfile object
127 * It should be able to grep for files or return the contents of a specific
128 * file.
129 */
131 class JarFileReader {
132 public:
134 JarFileReader(gchar const *new_filename)
135 : _state(CLOSED), _jarfile(new_filename) {}
136 JarFileReader() : _state(CLOSED) {}
137 virtual ~JarFileReader() { if (_state == OPEN) _jarfile.close(); }
138 //fixme return types are incorrect
139 GByteArray *get_next_file();//fixme clean up return type
140 void set_filename(gchar const *new_filename);
141 void set_jarfile(JarFile const &new_jarfile);
142 gchar *get_last_filename() const { return _jarfile.get_last_filename(); };
143 JarFileReader(JarFileReader const &rhs);
144 JarFileReader &operator=(JarFileReader const &rhs);
145 private:
146 JarFileReaderState _state;
147 JarFile _jarfile;
149 }; // class JarFileReader
151 } // namespace Inkjar
152 #endif // header guard
154 /*
155 Local Variables:
156 mode:c++
157 c-file-style:"stroustrup"
158 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
159 indent-tabs-mode:nil
160 fill-column:99
161 End:
162 */
163 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :