fcrackzip/zipinfo.c

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#else
typedef enum { FALSE = 0, TRUE = 1 } bool;
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
#include "getopt.h"
#endif

#include <string.h>
#include <errno.h>

static u32 fgetu32 (FILE *f)
{
  register u32 r;

  r  = fgetc(f) <<  0;
  r |= fgetc(f) <<  8;
  r |= fgetc(f) << 16;
  r |= fgetc(f) << 24;

  return r;
}

static u32 fgetu16 (FILE *f)
{
  register u32 r;

  r  = fgetc(f) <<  0;
  r |= fgetc(f) <<  8;

  return r;
}

static void parse_zip (char *path)
{
  FILE *f = fopen (path, "rb");
  
  if (!f)
    {
      fprintf (stderr, "skipping '%s': %s\n", path, strerror (errno));
      goto out;
    }
  
  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];

        (void)crc32; /* suppress warning */
        
        /* 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);
        
        printf ("found file '%s', size %ld (%ld)", zip_path, (long)uncompr_size, (long)compr_size);
        
        if (flags & 1)
          printf (", encrypted");
        
        if (compr_size >= 23)
          {
            u8 file[24];
            fread (file, 24, 1, f);
            
            printf ("\n%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
                    file[0], file[1], file[ 2], file[ 3], 
                    file[4], file[5], file[ 6], file[ 7], 
                    file[8], file[9], file[10], file[11]);
                    
            printf (" : %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
                    file[12], file[13], file[14], file[15], 
                    file[16], file[17], file[18], file[19], 
                    file[20], file[21], file[22], file[23]);
                    
            compr_size -= 24;
          }
        
        printf ("\n");
        
        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);
}

static void usage (int ec)
{
  printf ("\n"
                 PACKAGE " version " VERSION ", zipinfo - tell me about a zip file\n"
                 "written by Marc Lehmann <pcg@goof.com> You can find more info on\n"
                 "http://www.goof.com/pcg/marc/\n"
                 "\n"
                 "USAGE: zipinfo file...                the zipfiles to parse\n"
                 "\n"
          );
  
  exit (ec);
}

static struct option options[] = {
  { "help"              , no_argument           , 0, 'h' },
  { "version"           , no_argument           , 0, 'R' },
  { 0                   , 0                     , 0,  0  },
};

int main (int argc, char *argv[])
{
  int option_index = 0;
  int c;
  
  while ((c = getopt_long (argc, argv, "", options, &option_index)) != -1)
    switch (c)
      {
      case 'h':
        usage (0);
        break;
      case 'R':
        printf ("zipinfo version " VERSION "\n");
        exit (0);
      }
  
  if (optind >= argc)
    {
      fprintf (stderr, "you have to specify one or more zip files (try --help)\n");
      exit (1);
    }
  
  for (; optind < argc; optind++)
    parse_zip (argv[optind]);
  
  return 0;
}
Revision:	1.1
Committed:	Mon Aug 4 07:09:51 2008 UTC (15 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Log Message:	initial check-in, also 1.0 check-in
#	User	Rev	Content
1	root	1.1	#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
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
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
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
144			static void usage (int ec)
145			{
146			printf ("\n"
147			PACKAGE " version " VERSION ", zipinfo - 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: zipinfo 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
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 ("zipinfo 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			}