/*   miniunz.c   Version 1.01e, February 12th, 2005   Copyright (C) 1998-2005 Gilles Vollant*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <time.h>#include <errno.h>#include <fcntl.h>#ifdef unix# include <unistd.h># include <utime.h>#else# include <direct.h># include <io.h>#endif#include "unzip.h"#define CASESENSITIVITY (0)#define WRITEBUFFERSIZE (8192)#define MAXFILENAME (256)#ifdef WIN32#define USEWIN32IOAPI#include "iowin32.h"#endif/*  mini unzip, demo of unzip package  usage :  Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]  list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT    if it exists*//* change_file_date : change the date/time of a file    filename : the filename of the file where date/time must be modified    dosdate : the new date at the MSDos format (4 bytes)    tmu_date : the SAME new date at the tm_unz format */void change_file_date(filename,dosdate,tmu_date)    const char *filename;    uLong dosdate;    tm_unz tmu_date;{#ifdef WIN32  HANDLE hFile;  FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;  hFile = CreateFile(filename,GENERIC_READ | GENERIC_WRITE,                      0,NULL,OPEN_EXISTING,0,NULL);  GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);  DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);  LocalFileTimeToFileTime(&ftLocal,&ftm);  SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);  CloseHandle(hFile);#else#ifdef unix  struct utimbuf ut;  struct tm newdate;  newdate.tm_sec = tmu_date.tm_sec;  newdate.tm_min=tmu_date.tm_min;  newdate.tm_hour=tmu_date.tm_hour;  newdate.tm_mday=tmu_date.tm_mday;  newdate.tm_mon=tmu_date.tm_mon;  if (tmu_date.tm_year > 1900)      newdate.tm_year=tmu_date.tm_year - 1900;  else      newdate.tm_year=tmu_date.tm_year ;  newdate.tm_isdst=-1;  ut.actime=ut.modtime=mktime(&newdate);  utime(filename,&ut);#endif#endif}/* mymkdir and change_file_date are not 100 % portable   As I don't know well Unix, I wait feedback for the unix portion */int mymkdir(dirname)    const char* dirname;{    int ret=0;#ifdef WIN32    ret = mkdir(dirname);#else#ifdef unix    ret = mkdir (dirname,0775);#endif#endif    return ret;}int makedir (newdir)    char *newdir;{  char *buffer ;  char *p;  int  len = (int)strlen(newdir);  if (len <= 0)    return 0;  buffer = (char*)malloc(len+1);  strcpy(buffer,newdir);  if (buffer[len-1] == '/') {    buffer[len-1] = '\0';  }  if (mymkdir(buffer) == 0)    {      free(buffer);      return 1;    }  p = buffer+1;  while (1)    {      char hold;      while(*p && *p != '\\' && *p != '/')        p++;      hold = *p;      *p = 0;      if ((mymkdir(buffer) == -1) && (errno == ENOENT))        {          printf("couldn't create directory %s\n",buffer);          free(buffer);          return 0;        }      if (hold == 0)        break;      *p++ = hold;    }  free(buffer);  return 1;}void do_banner(){    printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");}void do_help(){    printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \           "  -e  Extract without pathname (junk paths)\n" \           "  -x  Extract with pathname\n" \           "  -v  list files\n" \           "  -l  list files\n" \           "  -d  directory to extract into\n" \           "  -o  overwrite files without prompting\n" \           "  -p  extract crypted file using password\n\n");}int do_list(uf)    unzFile uf;{    uLong i;    unz_global_info gi;    int err;    err = unzGetGlobalInfo (uf,&gi);    if (err!=UNZ_OK)        printf("error %d with zipfile in unzGetGlobalInfo \n",err);    printf(" Length  Method   Size  Ratio   Date    Time   CRC-32     Name\n");    printf(" ------  ------   ----  -----   ----    ----   ------     ----\n");    for (i=0;i<gi.number_entry;i++)    {        char filename_inzip[256];        unz_file_info file_info;        uLong ratio=0;        const char *string_method;        char charCrypt=' ';        err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);        if (err!=UNZ_OK)        {            printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);            break;        }        if (file_info.uncompressed_size>0)            ratio = (file_info.compressed_size*100)/file_info.uncompressed_size;        /* display a '*' if the file is crypted */        if ((file_info.flag & 1) != 0)            charCrypt='*';        if (file_info.compression_method==0)            string_method="Stored";        else        if (file_info.compression_method==Z_DEFLATED)        {            uInt iLevel=(uInt)((file_info.flag & 0x6)/2);            if (iLevel==0)              string_method="Defl:N";            else if (iLevel==1)              string_method="Defl:X";            else if ((iLevel==2) || (iLevel==3))              string_method="Defl:F"; /* 2:fast , 3 : extra fast*/        }        else            string_method="Unkn. ";        printf("%7lu  %6s%c%7lu %3lu%%  %2.2lu-%2.2lu-%2.2lu  %2.2lu:%2.2lu  %8.8lx   %s\n",                file_info.uncompressed_size,string_method,                charCrypt,                file_info.compressed_size,                ratio,                (uLong)file_info.tmu_date.tm_mon + 1,                (uLong)file_info.tmu_date.tm_mday,                (uLong)file_info.tmu_date.tm_year % 100,                (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,                (uLong)file_info.crc,filename_inzip);        if ((i+1)<gi.number_entry)        {            err = unzGoToNextFile(uf);            if (err!=UNZ_OK)            {                printf("error %d with zipfile in unzGoToNextFile\n",err);                break;            }        }    }    return 0;}int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)    unzFile uf;    const int* popt_extract_without_path;    int* popt_overwrite;    const char* password;{    char filename_inzip[256];    char* filename_withoutpath;    char* p;    int err=UNZ_OK;    FILE *fout=NULL;    void* buf;    uInt size_buf;    unz_file_info file_info;    uLong ratio=0;    err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);    if (err!=UNZ_OK)    {        printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);        return err;    }    size_buf = WRITEBUFFERSIZE;    buf = (void*)malloc(size_buf);    if (buf==NULL)    {        printf("Error allocating memory\n");        return UNZ_INTERNALERROR;    }    p = filename_withoutpath = filename_inzip;    while ((*p) != '\0')    {        if (((*p)=='/') || ((*p)=='\\'))            filename_withoutpath = p+1;        p++;    }    if ((*filename_withoutpath)=='\0')    {        if ((*popt_extract_without_path)==0)        {            printf("creating directory: %s\n",filename_inzip);            mymkdir(filename_inzip);        }    }    else    {        const char* write_filename;        int skip=0;