#include "config.h"#include <stdio.h>#include <stdlib.h>#ifdef HAVE_STDBOOL_H#include <stdbool.h>#elsetypedef 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){  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 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){  fprintf (stderr, "\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' },  { 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;      }    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;}