1 #ifdef HAVE_CONFIG_H
2 #include "config.h"
3 #endif
4
5 #include <stdio.h>
6 #include <stdlib.h>
7 #ifdef HAVE_STDBOOL_H
8 #include <stdbool.h>
9 #else
10 typedef enum { FALSE = 0, TRUE = 1 } bool;
11 #endif
12 #ifdef HAVE_GETOPT_H
13 #include <getopt.h>
14 #else
15 #include "getopt.h"
16 #endif
17
18 #include <string.h>
19 #include <errno.h>
20
fgetu32(FILE * f)21 static u32 fgetu32 (FILE *f)
22 {
23 register u32 r;
24
25 r = fgetc(f) << 0;
26 r |= fgetc(f) << 8;
27 r |= fgetc(f) << 16;
28 r |= fgetc(f) << 24;
29
30 return r;
31 }
32
fgetu16(FILE * f)33 static u32 fgetu16 (FILE *f)
34 {
35 register u32 r;
36
37 r = fgetc(f) << 0;
38 r |= fgetc(f) << 8;
39
40 return r;
41 }
42
parse_zip(char * path)43 static void parse_zip (char *path)
44 {
45 FILE *f = fopen (path, "rb");
46
47 if (!f)
48 {
49 fprintf (stderr, "skipping '%s': %s\n", path, strerror (errno));
50 goto out;
51 }
52
53 while (!feof (f))
54 {
55 u32 id = fgetu32 (f);
56
57 if (id == 0x04034b50UL)
58 {
59 u16 version = fgetu16 (f);
60 u16 flags = fgetu16 (f);
61 u16 compression_method = fgetu16 (f);
62 u16 lastmodtime = fgetu16 (f);
63 u16 lastmoddate = fgetu16 (f);
64 u32 crc32 = fgetu32 (f);
65 u32 compr_size = fgetu32 (f);
66 u32 uncompr_size = fgetu32 (f);
67 u16 name_len = fgetu16 (f);
68 u16 extra_field_len = fgetu16 (f);
69
70 char zip_path [1024];
71
72 (void)crc32; /* suppress warning */
73
74 /* these are unused. */
75 (void) lastmoddate;
76 (void) lastmodtime;
77 (void) compression_method;
78 (void) version;
79
80 if (name_len < 1024)
81 {
82 fread (zip_path, name_len, 1, f);
83 zip_path [name_len] = 0;
84 }
85 else
86 {
87 fprintf (stderr, "filename too long (>1023 bytes), skipping zipfile\n");
88 goto out;
89 }
90
91 fseek (f, extra_field_len, SEEK_CUR);
92
93 printf ("found file '%s', size %ld (%ld)", zip_path, (long)uncompr_size, (long)compr_size);
94
95 if (flags & 1)
96 printf (", encrypted");
97
98 if (compr_size >= 23)
99 {
100 u8 file[24];
101 fread (file, 24, 1, f);
102
103 printf ("\n%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
104 file[0], file[1], file[ 2], file[ 3],
105 file[4], file[5], file[ 6], file[ 7],
106 file[8], file[9], file[10], file[11]);
107
108 printf (" : %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
109 file[12], file[13], file[14], file[15],
110 file[16], file[17], file[18], file[19],
111 file[20], file[21], file[22], file[23]);
112
113 compr_size -= 24;
114 }
115
116 printf ("\n");
117
118 fseek (f, compr_size, SEEK_CUR);
119 }
120 else if (id == 0x08074b50UL) /* extended local sig (?) */
121 {
122 fseek (f, 12, SEEK_CUR);
123 }
124 else if (id == 0x30304b50UL)
125 {
126 /* ignore */
127 }
128 else if (id == 0x02014b50UL || id == 0x06054b50UL)
129 {
130 goto out;
131 }
132 else
133 {
134 fprintf (stderr, "found id %08lx, '%s' is not a zipfile ver 2.xx, skipping\n",
135 (unsigned long)id, path);
136 goto out;
137 }
138 }
139
140 out:
141 fclose (f);
142 }
143
usage(int ec)144 static void usage (int ec)
145 {
146 printf ("\n"
147 PACKAGE " version " VERSION ", fcrackzipinfo - tell me about a zip file\n"
148 "written by Marc Lehmann <pcg@goof.com> You can find more info on\n"
149 "http://www.goof.com/pcg/marc/\n"
150 "\n"
151 "USAGE: fcrackzipinfo file... the zipfiles to parse\n"
152 "\n"
153 );
154
155 exit (ec);
156 }
157
158 static struct option options[] = {
159 { "help" , no_argument , 0, 'h' },
160 { "version" , no_argument , 0, 'R' },
161 { 0 , 0 , 0, 0 },
162 };
163
main(int argc,char * argv[])164 int main (int argc, char *argv[])
165 {
166 int option_index = 0;
167 int c;
168
169 while ((c = getopt_long (argc, argv, "", options, &option_index)) != -1)
170 switch (c)
171 {
172 case 'h':
173 usage (0);
174 break;
175 case 'R':
176 printf ("fcrackzipinfo version " VERSION "\n");
177 exit (0);
178 }
179
180 if (optind >= argc)
181 {
182 fprintf (stderr, "you have to specify one or more zip files (try --help)\n");
183 exit (1);
184 }
185
186 for (; optind < argc; optind++)
187 parse_zip (argv[optind]);
188
189 return 0;
190 }
191