| 1 |
#ifdef HAVE_CONFIG_H |
| 2 |
#include "config.h" |
| 3 |
#endif |
| 4 |
|
| 5 |
#include <stdio.h> |
| 6 |
#include <errno.h> |
| 7 |
#include <string.h> |
| 8 |
#include "crack.h" |
| 9 |
|
| 10 |
u8 pw[MAX_PW + 1] = "aaaaaa"; |
| 11 |
u8 *pw_end; /* must point to the trailing zero byte. */ |
| 12 |
|
| 13 |
u8 files[MAX_FILES * HEADER_SIZE]; |
| 14 |
const char *file_path[MAX_FILES]; |
| 15 |
int file_count; |
| 16 |
|
| 17 |
u8 bf_next[256]; |
| 18 |
u8 bf_last; |
| 19 |
|
| 20 |
int verbosity; |
| 21 |
|
| 22 |
static u8 mult_tab[16384]; |
| 23 |
|
| 24 |
static u32 |
| 25 |
fgetu32 (FILE * f) |
| 26 |
{ |
| 27 |
register u32 r; |
| 28 |
|
| 29 |
r = fgetc(f) << 0; |
| 30 |
r |= fgetc(f) << 8; |
| 31 |
r |= fgetc(f) << 16; |
| 32 |
r |= fgetc(f) << 24; |
| 33 |
|
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return r; |
| 35 |
} |
| 36 |
|
| 37 |
static u32 |
| 38 |
fgetu16 (FILE * f) |
| 39 |
{ |
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register u32 r; |
| 41 |
|
| 42 |
r = fgetc(f) << 0; |
| 43 |
r |= fgetc(f) << 8; |
| 44 |
|
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return r; |
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} |
| 47 |
|
| 48 |
static void |
| 49 |
load_zip (const char *path) |
| 50 |
{ |
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FILE *f = fopen (path, "rb"); |
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|
| 53 |
if (!f) |
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{ |
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fprintf (stderr, "skipping '%s': %s\n", path, strerror (errno)); |
| 56 |
return; |
| 57 |
} |
| 58 |
|
| 59 |
while (!feof (f)) |
| 60 |
{ |
| 61 |
u32 id = fgetu32 (f); |
| 62 |
|
| 63 |
if (id == 0x04034b50UL) |
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{ |
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u16 version = fgetu16 (f); |
| 66 |
u16 flags = fgetu16 (f); |
| 67 |
u16 compression_method = fgetu16 (f); |
| 68 |
u16 lastmodtime = fgetu16 (f); |
| 69 |
u16 lastmoddate = fgetu16 (f); |
| 70 |
u32 crc32 = fgetu32 (f); |
| 71 |
u32 compr_size = fgetu32 (f); |
| 72 |
u32 uncompr_size = fgetu32 (f); |
| 73 |
u16 name_len = fgetu16 (f); |
| 74 |
u16 extra_field_len = fgetu16 (f); |
| 75 |
|
| 76 |
char zip_path[1024]; |
| 77 |
|
| 78 |
/* these are unused. */ |
| 79 |
(void) lastmoddate; |
| 80 |
(void) lastmodtime; |
| 81 |
(void) compression_method; |
| 82 |
(void) version; |
| 83 |
|
| 84 |
if (name_len < 1024) |
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{ |
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fread (zip_path, name_len, 1, f); |
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zip_path[name_len] = 0; |
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} |
| 89 |
else |
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{ |
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fprintf (stderr, "filename too long (>1023 bytes), skipping zipfile\n"); |
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goto out; |
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} |
| 94 |
|
| 95 |
fseek (f, extra_field_len, SEEK_CUR); |
| 96 |
|
| 97 |
if (flags & 1) |
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{ |
| 99 |
if (compr_size >= 12) |
| 100 |
{ |
| 101 |
u8 *file = files + HEADER_SIZE * file_count; |
| 102 |
fread (file, FILE_SIZE, 1, f); |
| 103 |
|
| 104 |
if (flags & 8) |
| 105 |
{ |
| 106 |
/* extended header format? */ |
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file[FILE_SIZE] = lastmodtime >> 8; |
| 108 |
file[FILE_SIZE + 1] = lastmodtime; |
| 109 |
} |
| 110 |
else |
| 111 |
{ |
| 112 |
file[FILE_SIZE] = crc32 >> 24; |
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file[FILE_SIZE + 1] = crc32 >> 16; |
| 114 |
} |
| 115 |
|
| 116 |
file_path[file_count] = strdup (path); |
| 117 |
|
| 118 |
if (verbosity) |
| 119 |
printf ("found file '%s', (size cp/uc %6lu/%6lu, flags %lx, chk %02x%02x)\n", |
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zip_path, (unsigned long) compr_size, (unsigned long) uncompr_size, (unsigned long) flags, |
| 121 |
file[FILE_SIZE], file[FILE_SIZE+1]); |
| 122 |
|
| 123 |
if (++file_count >= MAX_FILES) |
| 124 |
{ |
| 125 |
if (verbosity) |
| 126 |
printf ("%d file maximum reached, skipping further files\n", MAX_FILES); |
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|
| 128 |
goto out; |
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} |
| 130 |
|
| 131 |
compr_size -= 12; |
| 132 |
} |
| 133 |
else |
| 134 |
{ |
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fprintf (stderr, "'%s' is corrupted, skipping zipfile\n", zip_path); |
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goto out; |
| 137 |
} |
| 138 |
} |
| 139 |
else if (verbosity) |
| 140 |
printf ("'%s' is not encrypted, skipping\n", zip_path); |
| 141 |
|
| 142 |
fseek (f, compr_size, SEEK_CUR); |
| 143 |
} |
| 144 |
else if (id == 0x08074b50UL) /* extended local sig (?) */ |
| 145 |
{ |
| 146 |
fseek (f, 12, SEEK_CUR); |
| 147 |
} |
| 148 |
else if (id == 0x30304b50UL) |
| 149 |
{ |
| 150 |
/* ignore */ |
| 151 |
} |
| 152 |
else if (id == 0x02014b50UL || id == 0x06054b50UL) |
| 153 |
{ |
| 154 |
goto out; |
| 155 |
} |
| 156 |
else |
| 157 |
{ |
| 158 |
fprintf (stderr, "found id %08lx, '%s' is not a zipfile ver 2.xx, skipping\n", |
| 159 |
(unsigned long) id, path); |
| 160 |
goto out; |
| 161 |
} |
| 162 |
} |
| 163 |
|
| 164 |
out: |
| 165 |
fclose (f); |
| 166 |
} |
| 167 |
|
| 168 |
#include "cpmask.c" |
| 169 |
#include "crackdef.c" |
