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