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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "crack.h"
u8 pw[MAX_PW + 1] = "aaaaaa";
u8 *pw_end; /* must point to the trailing zero byte. */
u8 files[MAX_FILES * HEADER_SIZE];
const char *file_path[MAX_FILES];
int file_count;
u8 bf_next[256];
u8 bf_last;
int verbosity;
static u8 mult_tab[16384];
static u32
fgetu32 (FILE * f)
{
return (fgetc (f) << 0) |
(fgetc (f) << 8) |
(fgetc (f) << 16) |
(fgetc (f) << 24);
}
static u32
fgetu16 (FILE * f)
{
return (fgetc (f) << 0) |
(fgetc (f) << 8);
}
static void
load_zip (const char *path)
{
FILE *f = fopen (path, "rb");
if (!f)
{
fprintf (stderr, "skipping '%s': %s\n", path, strerror (errno));
return;
}
while (!feof (f))
{
u32 id = fgetu32 (f);
if (id == 0x04034b50UL)
{
u16 version = fgetu16 (f);
u16 flags = fgetu16 (f);
u16 compression_method = fgetu16 (f);
u16 lastmodtime = fgetu16 (f);
u16 lastmoddate = fgetu16 (f);
u32 crc32 = fgetu32 (f);
u32 compr_size = fgetu32 (f);
u32 uncompr_size = fgetu32 (f);
u16 name_len = fgetu16 (f);
u16 extra_field_len = fgetu16 (f);
char zip_path[1024];
/* these are unused. */
(void) lastmoddate;
(void) lastmodtime;
(void) compression_method;
(void) version;
if (name_len < 1024)
{
fread (zip_path, name_len, 1, f);
zip_path[name_len] = 0;
}
else
{
fprintf (stderr, "filename too long (>1023 bytes), skipping zipfile\n");
goto out;
}
fseek (f, extra_field_len, SEEK_CUR);
if (flags & 1)
{
if (compr_size >= 12)
{
u8 *file = files + HEADER_SIZE * file_count;
fread (file, FILE_SIZE, 1, f);
if (flags & 8)
{
/* extended header format? */
file[FILE_SIZE] = lastmodtime >> 8;
file[FILE_SIZE + 1] = lastmodtime;
}
else
{
file[FILE_SIZE] = crc32 >> 24;
file[FILE_SIZE + 1] = crc32 >> 16;
}
file_path[file_count] = strdup (path);
if (verbosity)
printf ("found file '%s', (size cp/uc %6lu/%6lu, flags %lx, chk %02x%02x)\n",
zip_path, (unsigned long) compr_size, (unsigned long) uncompr_size, (unsigned long) flags,
file[FILE_SIZE], file[FILE_SIZE+1]);
if (++file_count >= MAX_FILES)
{
if (verbosity)
printf ("%d file maximum reached, skipping further files\n", MAX_FILES);
goto out;
}
compr_size -= 12;
}
else
{
fprintf (stderr, "'%s' is corrupted, skipping zipfile\n", zip_path);
goto out;
}
}
else if (verbosity)
printf ("'%s' is not encrypted, skipping\n", zip_path);
fseek (f, compr_size, SEEK_CUR);
}
else if (id == 0x08074b50UL) /* extended local sig (?) */
{
fseek (f, 12, SEEK_CUR);
}
else if (id == 0x30304b50UL)
{
/* ignore */
}
else if (id == 0x02014b50UL || id == 0x06054b50UL)
{
goto out;
}
else
{
fprintf (stderr, "found id %08lx, '%s' is not a zipfile ver 2.xx, skipping\n",
(unsigned long) id, path);
goto out;
}
}
out:
fclose (f);
}
#include "cpmask.c"
#include "crackdef.c"
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