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
fgetu32(FILE * f)25 fgetu32 (FILE * f)
26 {
27 return (fgetc (f) << 0) |
28 (fgetc (f) << 8) |
29 (fgetc (f) << 16) |
30 (fgetc (f) << 24);
31 }
32
33 static u32
fgetu16(FILE * f)34 fgetu16 (FILE * f)
35 {
36 return (fgetc (f) << 0) |
37 (fgetc (f) << 8);
38 }
39
40 static void
load_zip(const char * path)41 load_zip (const char *path)
42 {
43 FILE *f = fopen (path, "rb");
44
45 if (!f)
46 {
47 fprintf (stderr, "skipping '%s': %s\n", path, strerror (errno));
48 return;
49 }
50
51 while (!feof (f))
52 {
53 u32 id = fgetu32 (f);
54
55 if (id == 0x04034b50UL)
56 {
57 u16 version = fgetu16 (f);
58 u16 flags = fgetu16 (f);
59 u16 compression_method = fgetu16 (f);
60 u16 lastmodtime = fgetu16 (f);
61 u16 lastmoddate = fgetu16 (f);
62 u32 crc32 = fgetu32 (f);
63 u32 compr_size = fgetu32 (f);
64 u32 uncompr_size = fgetu32 (f);
65 u16 name_len = fgetu16 (f);
66 u16 extra_field_len = fgetu16 (f);
67
68 char zip_path[1024];
69
70 /* these are unused. */
71 (void) lastmoddate;
72 (void) lastmodtime;
73 (void) compression_method;
74 (void) version;
75
76 if (name_len < 1024)
77 {
78 fread (zip_path, name_len, 1, f);
79 zip_path[name_len] = 0;
80 }
81 else
82 {
83 fprintf (stderr, "filename too long (>1023 bytes), skipping zipfile\n");
84 goto out;
85 }
86
87 fseek (f, extra_field_len, SEEK_CUR);
88
89 if (flags & 1)
90 {
91 if (compr_size >= 12)
92 {
93 u8 *file = files + HEADER_SIZE * file_count;
94 fread (file, FILE_SIZE, 1, f);
95
96 if (flags & 8)
97 {
98 /* extended header format? */
99 file[FILE_SIZE] = lastmodtime >> 8;
100 file[FILE_SIZE + 1] = lastmodtime;
101 }
102 else
103 {
104 file[FILE_SIZE] = crc32 >> 24;
105 file[FILE_SIZE + 1] = crc32 >> 16;
106 }
107
108 file_path[file_count] = strdup (path);
109
110 if (verbosity)
111 printf ("found file '%s', (size cp/uc %6lu/%6lu, flags %lx, chk %02x%02x)\n",
112 zip_path, (unsigned long) compr_size, (unsigned long) uncompr_size, (unsigned long) flags,
113 file[FILE_SIZE], file[FILE_SIZE+1]);
114
115 if (++file_count >= MAX_FILES)
116 {
117 if (verbosity)
118 printf ("%d file maximum reached, skipping further files\n", MAX_FILES);
119
120 goto out;
121 }
122
123 compr_size -= 12;
124 }
125 else
126 {
127 fprintf (stderr, "'%s' is corrupted, skipping zipfile\n", zip_path);
128 goto out;
129 }
130 }
131 else if (verbosity)
132 printf ("'%s' is not encrypted, skipping\n", zip_path);
133
134 fseek (f, compr_size, SEEK_CUR);
135 }
136 else if (id == 0x08074b50UL) /* extended local sig (?) */
137 {
138 fseek (f, 12, SEEK_CUR);
139 }
140 else if (id == 0x30304b50UL)
141 {
142 /* ignore */
143 }
144 else if (id == 0x02014b50UL || id == 0x06054b50UL)
145 {
146 goto out;
147 }
148 else
149 {
150 fprintf (stderr, "found id %08lx, '%s' is not a zipfile ver 2.xx, skipping\n",
151 (unsigned long) id, path);
152 goto out;
153 }
154 }
155
156 out:
157 fclose (f);
158 }
159
160 #include "cpmask.c"
161 #include "crackdef.c"
162