/*
  Copyright (c) 1990-2009 Info-ZIP.  All rights reserved.

  See the accompanying file LICENSE, version 2009-Jan-02 or later
  (the contents of which are also included in unzip.h) for terms of use.
  If, for some reason, all these files are missing, the Info-ZIP license
  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
*/
/* Windows Info-ZIP Unzip DLL module
 *
 * Author: Mike White
 *
 * Original: 1996
 *
 * This module has the entry points for "unzipping" a zip file.
 */

/*---------------------------------------------------------------------------

  This file is the WINDLL replacement for the generic ``main program source
  file'' unzip.c.

  See the general comments in the header part of unzip.c.

  Copyrights:  see accompanying file "COPYING" in UnZip source distribution.
               (This software is free but NOT IN THE PUBLIC DOMAIN.  There
               are some restrictions on commercial use.)

  ---------------------------------------------------------------------------*/

#define __WINDLL_C      /* identifies this source module */

#define WIN32_LEAN_AND_MEAN
#define UNZIP_INTERNAL
#include "../unzip.h"
#include "../crypt.h"
#include "../unzvers.h"
#include "../windll/windll.h"
#include "../windll/structs.h"
#include "../consts.h"
#include <malloc.h>

/* Added type casts to prevent potential "type mismatch" error messages. */
#ifdef REENTRANT
#  undef __G
#  undef __G__
#  define __G                 (Uz_Globs *)pG
#  define __G__               (Uz_Globs *)pG,
#endif

HANDLE hwildZipFN;
HANDLE hInst;               /* current instance */
HANDLE hDCL;
int fNoPrinting = 0;
extern jmp_buf dll_error_return;

/* Helper function to release memory allocated by Wiz_SetOpts() */
static void FreeDllMem(__GPRO);

/* For displaying status messages and error messages */
static int UZ_EXP DllMessagePrint(zvoid *pG, uch *buf, ulg size, int flag);

#if 0 /* currently unused */
/* For displaying files extracted to the display window */
int DllDisplayPrint(zvoid *pG, uch *buf, ulg size, int flag);
#endif /* never */

/* Callback function for status report and/or user interception */
static int UZ_EXP Wiz_StatReportCB(zvoid *pG, int fnflag, ZCONST char *zfn,
                                   ZCONST char *efn, ZCONST zvoid *details);

/* Dummy sound function for those applications that don't use sound */
static void WINAPI DummySound(void);

static int UnzipAllocMemory(unsigned, char *, char *, char ***, unsigned *);
static int UnzipParseString(LPCSTR, unsigned *, char ***);
static void UnzipFreeArguments(unsigned, char ***);

#ifndef UNZIPLIB
/*  DLL Entry Point */

#ifdef __BORLANDC__
#pragma argsused
/* Borland seems to want DllEntryPoint instead of DllMain like MSVC */
#define DllMain DllEntryPoint
#endif
#ifdef WIN32
BOOL WINAPI DllMain( HINSTANCE hInstance,
                     DWORD dwReason,
                     LPVOID plvReserved)
#else
int FAR PASCAL LibMain( HINSTANCE hInstance,
                        WORD wDataSegment,
                        WORD wHeapSize,
                        LPSTR lpszCmdLine )
#endif
{
#ifndef WIN32
   /* The startup code for the DLL initializes the local heap(if there is one)
    * with a call to LocalInit which locks the data segment.
    */

   if ( wHeapSize != 0 )
      {
      UnlockData( 0 );
      }
   hInst = hInstance;
   return 1;   /* Indicate that the DLL was initialized successfully. */
#else
   BOOL rc = TRUE;
   switch( dwReason )
      {
      case DLL_PROCESS_ATTACH:
         // DLL is loaded. Do your initialization here.
         // If cannot init, set rc to FALSE.
         hInst = hInstance;
         break;

      case DLL_PROCESS_DETACH:
         // DLL is unloaded. Do your cleanup here.
         break;
      default:
         break;
      }
   return rc;
#endif
}

#ifdef __BORLANDC__
#pragma argsused
#endif
int FAR PASCAL WEP ( int bSystemExit )
{
   return 1;
}
#endif /* !UNZIPLIB */

static int UnzipAllocMemory(unsigned int i, char *cmd, char *str,
                            char ***pargVee, unsigned int *pargCee)
{
    if (((*pargVee)[i] = (char *)malloc(sizeof(char) * strlen(cmd)+1 ))
        == NULL)
    {
        if (pargCee != NULL)
            (*pargCee)++;
        UnzipFreeArguments(*pargCee, pargVee);
        fprintf(stdout, "Unable to allocate memory in unzip library at %s\n",
                str);
        return PK_MEM;
    }
    strcpy((*pargVee)[i], cmd);
    (*pargCee)++;
    return PK_OK;
}

static void UnzipFreeArguments(unsigned int argCee, char ***pargVee)
{
    unsigned i;

    /* Free the arguments in the arrays */
    for (i = 0; i < argCee; i++)
    {
        free ((*pargVee)[i]);
        (*pargVee)[i] = NULL;
    }

    /* Then free the arrays themselves */
    free(*pargVee);
}


static int UnzipParseString(LPCSTR s, unsigned int *pargCee, char ***pargVee)
{
    unsigned int i = 0;
    char *str1, *str2, *str3;
    size_t size;

    str1 = (char *) malloc(lstrlen(s)+4);
    lstrcpy(str1, s);
    lstrcat(str1, " @");

    str2 = strchr(str1, '\"'); // get first occurance of double quote

    while ((str3 = strchr(str1, '\t')) != NULL)
    {
        str3[0] = ' '; // Change tabs into a single space
    }

    /* Note that if a quoted string contains multiple adjacent spaces, they
       will not be removed, because they could well point to a valid
       folder/file name.
     */
    while ((str2 = strchr(str1, '\"')) != NULL)
    {
        // Found an opening double quote; get the corresponding closing quote
        str3 = strchr(str2+1, '\"');
        if (str3 == NULL)
        {
            free(str1);
            return PK_PARAM; /* Something is screwy with the
                                string, bail out */
        }
        str3[0] = '\0';  // terminate str2 with a NULL

        size = _msize(*pargVee);
        if ((*pargVee = (char **)realloc(*pargVee, size + sizeof(char *)))
            == NULL)
        {
            fprintf(stdout, "Unable to allocate memory in unzip dll\n");
            return PK_MEM;
        }
        // argCee is incremented in UnzipAllocMemory
        if (UnzipAllocMemory(i, str2+1, "Creating file list from string",
                             pargVee, pargCee) != PK_OK)
        {
            free(str1);
            return PK_MEM;
        }
        i++;
        str3+=2;  // Point past the whitespace character
        str2[0] = '\0'; // Terminate str1
        lstrcat(str1, str3);
    }    // end while

    /* points to first occurance of a space */
    str2 = strchr(str1, ' ');

    /*  Go through the string character by character, looking for instances
        of two spaces together. Terminate when you find the trailing @
    */
    while ((str2[0] != '\0') && (str2[0] != '@'))
    {
        while ((str2[0] == ' ') && (str2[1] == ' '))
        {
            str3 = &str2[1];
            str2[0] = '\0';
            lstrcat(str1, str3);
        }
        str2++;
    }

    /* Do we still have a leading space? */
    if (str1[0] == ' ')
    {
        str3 = &str1[1];
        lstrcpy(str1, str3); // Dump the leading space
    }


    /* Okay, now we have gotten rid of any tabs and replaced them with
       spaces, and have replaced multiple spaces with a single space. We
       couldn't do this before because the folder names could have actually
       contained these characters.
    */

    str2 = str3 = str1;

    while ((str2[0] != '\0') && (str3[0] != '@'))
    {
        str3 = strchr(str2+1, ' ');
        str3[0] = '\0';
        size = _msize(pargVee);
        if ((*pargVee = (char **)realloc(*pargVee, size + sizeof(char *)))
            == NULL)
        {
            fprintf(stdout, "Unable to allocate memory in unzip dll\n");
            return PK_MEM;
        }
        if (UnzipAllocMemory(i, str2, "Creating file list from string",
                             pargVee, pargCee) != PK_OK)
        {
            free(str1);
            return PK_MEM;
        }
        i++;
        str3++;
        str2 = str3;
    }
    free(str1);
    return PK_OK;
}

/* DLL calls */

BOOL WINAPI Wiz_Init(pG, lpUserFunc)
zvoid *pG;
LPUSERFUNCTIONS lpUserFunc;
{
    G.message = DllMessagePrint;
    G.statreportcb = Wiz_StatReportCB;
    if (lpUserFunc->sound == NULL)
       lpUserFunc->sound = DummySound;
    G.lpUserFunctions = lpUserFunc;

    SETLOCALE(LC_CTYPE, "");

    if (!G.lpUserFunctions->print ||
        !G.lpUserFunctions->sound ||
        !G.lpUserFunctions->replace)
        return FALSE;

    return TRUE;
}

/*
    StructVersID      = version of this structure (= UZ_DCL_STRUCTVER)
    ExtractOnlyNewer  = TRUE for "update" without interaction
                        (extract only newer/new files, without queries)
    SpaceToUnderscore = TRUE if convert space to underscore
    PromptToOverwrite = TRUE if prompt to overwrite is wanted
    fQuiet            = quiet flag:
                         0 = all messages, 1 = few messages, 2 = no messages
    ncflag            = write to stdout if TRUE
    ntflag            = test zip file
    nvflag            = verbose listing
    nfflag            = "freshen" (replace existing files by newer versions)
    nzflag            = display zip file comment
    ndflag            = controls (sub)directory recreation during extraction
                        0 = junk paths from filenames
                        1 = "safe" usage of paths in filenames (skip "../")
                        2 = allow also unsafe path components (dir traversal)
    noflag            = always overwriting existing files if TRUE
    naflag            = do end-of-line translation
    nZIflag           = get ZipInfo if TRUE
    B_flag            = backup existing files if TRUE
    C_flag            = be case insensitive if TRUE
    D_flag            = controls restoration of timestamps
                        0 = restore all timestamps (default)
                        1 = skip restoration of timestamps for folders
                            created on behalf of directory entries in the
                            Zip archive
                        2 = do not restore any timestamps; extracted files
                            and directories get stamped with the current time
    U_flag            = controls UTF-8 filename coding support
                        0 = automatic UTF-8 translation enabled (default)
                        1 = recognize UTF-8 coded names, but all non-ASCII
                            characters are "escaped" into "#Uxxxx"
                        2 = UTF-8 support is disabled, filename handling
                            works exactly as in previous UnZip versions
    fPrivilege        = 1 => restore ACLs in user mode,
                        2 => try to use privileges for restoring ACLs
    lpszZipFN         = zip file name
    lpszExtractDir    = directory to extract to. This should be NULL if you
                        are extracting to the current directory.
 */

BOOL WINAPI Wiz_SetOpts(pG, lpDCL)
zvoid *pG;
LPDCL lpDCL;
{
    if (lpDCL->StructVersID != UZ_DCL_STRUCTVER)
        return FALSE;

    uO.qflag = lpDCL->fQuiet;  /* Quiet flag */
    G.pfnames = (char **)&fnames[0];    /* assign default file name vector */
    G.pxnames = (char **)&fnames[1];

    uO.jflag = (lpDCL->ndflag == 0);
    uO.ddotflag = (lpDCL->ndflag >= 2);
    uO.cflag = lpDCL->ncflag;
    uO.tflag = lpDCL->ntflag;
    uO.vflag = lpDCL->nvflag;
    uO.zflag = lpDCL->nzflag;
    uO.aflag = lpDCL->naflag;
#ifdef UNIXBACKUP
    uO.B_flag = lpDCL->B_flag;
#endif
    uO.C_flag = lpDCL->C_flag;
    uO.D_flag = lpDCL->D_flag;
    uO.U_flag = lpDCL->U_flag;
    uO.overwrite_all = lpDCL->noflag;
    uO.overwrite_none = !(lpDCL->noflag || lpDCL->PromptToOverwrite);
    uO.uflag = lpDCL->ExtractOnlyNewer || lpDCL->nfflag;
    uO.fflag = lpDCL->nfflag;
#ifdef WIN32
    uO.X_flag = lpDCL->fPrivilege;
#endif
    uO.sflag = lpDCL->SpaceToUnderscore; /* Translate spaces to underscores? */
    if (lpDCL->nZIflag)
      {
      uO.zipinfo_mode = TRUE;
      uO.hflag = TRUE;
      uO.lflag = 10;
      uO.qflag = 2;
      }
    else
      {
      uO.zipinfo_mode = FALSE;
      }

    G.extract_flag = (!uO.zipinfo_mode &&
                      !uO.cflag && !uO.tflag && !uO.vflag && !uO.zflag
#ifdef TIMESTAMP
                      && !uO.T_flag
#endif
                     );

    if (lpDCL->lpszExtractDir != NULL && G.extract_flag)
       {
#ifndef CRTL_CP_IS_ISO
       char *pExDirRoot = (char *)malloc(strlen(lpDCL->lpszExtractDir)+1);

       if (pExDirRoot == NULL)
           return FALSE;
       ISO_TO_INTERN(lpDCL->lpszExtractDir, pExDirRoot);
#else
#  define pExDirRoot lpDCL->lpszExtractDir
#endif
       if (strlen(pExDirRoot) >= FILNAMSIZ)
           {
           /* The supplied extract root path exceed the filename size limit. */
#ifndef CRTL_CP_IS_ISO
           free(pExDirRoot);
#endif
           return FALSE;
           }
       uO.exdir = pExDirRoot;
       }
    else
       {
       uO.exdir = (char *)NULL;
       }

/* G.wildzipfn needs to be initialized so that do_wild does not wind
   up clearing out the zip file name when it returns in process.c
*/
    if (strlen(lpDCL->lpszZipFN) >= FILNAMSIZ)
       /* length of supplied archive name exceed the system's filename limit */
       return FALSE;

    hwildZipFN = GlobalAlloc(GPTR, FILNAMSIZ);
    if (hwildZipFN == (HGLOBAL) NULL)
       return FALSE;

    G.wildzipfn = GlobalLock(hwildZipFN);
    lstrcpy(G.wildzipfn, lpDCL->lpszZipFN);
    _ISO_INTERN(G.wildzipfn);

    return TRUE;    /* set up was OK */
}

static void FreeDllMem(__GPRO)
{
    if (G.wildzipfn) {
        GlobalUnlock(hwildZipFN);
        G.wildzipfn = NULL;
    }
    if (hwildZipFN)
        hwildZipFN = GlobalFree(hwildZipFN);

#ifndef CRTL_CP_IS_ISO
    if (uO.exdir != NULL) {
        free(uO.exdir);
        uO.exdir = NULL;
    }
#endif

    uO.zipinfo_mode = FALSE;
}

int WINAPI Wiz_Unzip(pG, ifnc, ifnv, xfnc, xfnv)
zvoid *pG;
int ifnc;
char **ifnv;
int xfnc;
char **xfnv;
{
    int retcode, f_cnt;
#ifndef CRTL_CP_IS_ISO
    unsigned bufsize;
    char **intern_ifv = NULL, **intern_xfv = NULL;
#endif

    if (ifnv == (char **)NULL && ifnc != 0)
        ifnc = 0;
    else
        for (f_cnt = 0; f_cnt < ifnc; f_cnt++)
            if (ifnv[f_cnt] == (char *)NULL) {
                ifnc = f_cnt;
                break;
            }
    if (xfnv == (char **)NULL && xfnc != 0)
        xfnc = 0;
    else
        for (f_cnt = 0; f_cnt < xfnc; f_cnt++)
            if (xfnv[f_cnt] == (char *)NULL) {
                xfnc = f_cnt;
                break;
            }

    G.process_all_files = (ifnc == 0 && xfnc == 0);         /* for speed */
    G.filespecs = ifnc;
    G.xfilespecs = xfnc;

    if (ifnc > 0) {
        for (f_cnt = ifnc; --f_cnt >= 0;)
            if (strlen(ifnv[f_cnt]) > ((WSIZE>>2) - 160)) {
                /* include filename pattern is too long for internal buffers */
                FreeDllMem(__G);
                return PK_PARAM;
            }

#ifdef CRTL_CP_IS_ISO
        G.pfnames = ifnv;
#else /* !CRTL_CP_IS_ISO */
        intern_ifv = (char **)malloc((ifnc+1)*sizeof(char **));
        if (intern_ifv == (char **)NULL)
        {
            FreeDllMem(__G);
            return PK_BADERR;
        }

        bufsize = 0;
        for (f_cnt = ifnc; --f_cnt >= 0;)
            bufsize += strlen(ifnv[f_cnt]) + 1;
        intern_ifv[0] = (char *)malloc(bufsize);
        if (intern_ifv[0] == (char *)NULL)
        {
            free(intern_ifv);
            FreeDllMem(__G);
            return PK_BADERR;
        }

        for (f_cnt = 0; ; f_cnt++)
        {
            ISO_TO_INTERN(ifnv[f_cnt], intern_ifv[f_cnt]);
            if ((f_cnt+1) >= ifnc)
                break;
            intern_ifv[f_cnt+1] = intern_ifv[f_cnt] +
                                  (strlen(intern_ifv[f_cnt]) + 1);
        }
        intern_ifv[ifnc] = (char *)NULL;
        G.pfnames = intern_ifv;
#endif /* ?CRTL_CP_IS_ISO */
    }

    if (xfnc > 0) {
        for (f_cnt = xfnc; --f_cnt >= 0;)
            if (strlen(xfnv[f_cnt]) > ((WSIZE>>2) - 160))
            {
                /* exclude filename pattern is too long for internal buffers */
#ifndef CRTL_CP_IS_ISO
                if (ifnc > 0)
                {
                    free(intern_ifv[0]);
                    free(intern_ifv);
                }
#endif
                FreeDllMem(__G);
                return PK_PARAM;
            }

#ifdef CRTL_CP_IS_ISO
        G.pxnames = xfnv;
#else /* !CRTL_CP_IS_ISO */
        intern_xfv = (char **)malloc((xfnc+1)*sizeof(char **));
        if (intern_xfv == (char **)NULL)
        {
            if (ifnc > 0)
            {
                free(intern_ifv[0]);
                free(intern_ifv);
            }
            FreeDllMem(__G);
            return PK_BADERR;
        }

        bufsize = 0;
        for (f_cnt = xfnc; --f_cnt >= 0;)
            bufsize += strlen(xfnv[f_cnt]) + 1;
        intern_xfv[0] = (char *)malloc(bufsize);
        if (intern_xfv[0] == (char *)NULL)
        {
            free(intern_xfv);
            if (ifnc > 0)
            {
                free(intern_ifv[0]);
                free(intern_ifv);
            }
            FreeDllMem(__G);
            return PK_BADERR;
        }

        for (f_cnt = 0; ; f_cnt++)
        {
            ISO_TO_INTERN(xfnv[f_cnt], intern_xfv[f_cnt]);
            if ((f_cnt+1) >= xfnc)
                break;
            intern_xfv[f_cnt+1] = intern_xfv[f_cnt] +
                                  (strlen(intern_xfv[f_cnt]) + 1);
        }
        intern_xfv[xfnc] = (char *)NULL;
        G.pxnames = intern_xfv;
#endif /* ?CRTL_CP_IS_ISO */
    }

/*---------------------------------------------------------------------------
    Okey dokey, we have everything we need to get started.  Let's roll.
  ---------------------------------------------------------------------------*/

    retcode = setjmp(dll_error_return);
    if (retcode)
    {
#ifndef CRTL_CP_IS_ISO
        if (xfnc > 0)
        {
            free(intern_xfv[0]);
            free(intern_xfv);
        }
        if (ifnc > 0)
        {
            free(intern_ifv[0]);
            free(intern_ifv);
        }
#endif
        FreeDllMem(__G);
        return PK_BADERR;
    }

    retcode = process_zipfiles(__G);
#ifndef CRTL_CP_IS_ISO
    if (xfnc > 0)
    {
        free(intern_xfv[0]);
        free(intern_xfv);
    }
    if (ifnc > 0)
    {
        free(intern_ifv[0]);
        free(intern_ifv);
    }
#endif
    FreeDllMem(__G);
    return retcode;
}


/*
ifnc       = number of file names being passed. If all files are to be
             extracted, then this can be zero.
ifnv       = file names to be unarchived. Wildcard patterns are recognized
             and expanded. If all files are to be extracted, then this can
             be NULL.
xfnc       = number of "file names to be excluded from processing" being
             passed. If all files are to be extracted, set this to zero.
xfnv       = file names to be excluded from the unarchiving process. Wildcard
             characters are allowed and expanded. If all files are to be
             extracted, set this argument to NULL.
lpDCL      = pointer to a structure with the flags for setting the
             various options, as well as the zip file name.
lpUserFunc = pointer to a structure that contains pointers to functions
             in the calling application, as well as sizes passed back to
             the calling application etc.
*/

int WINAPI Wiz_SingleEntryUnzip(int ifnc, char **ifnv, int xfnc, char **xfnv,
   LPDCL lpDCL, LPUSERFUNCTIONS lpUserFunc)
{
   int retcode;
   CONSTRUCTGLOBALS();

   if (!Wiz_Init((zvoid *)&G, lpUserFunc))
   {
      DESTROYGLOBALS();
      return PK_BADERR;
   }

   if (lpDCL->lpszZipFN == NULL)
   {
      /* Something has screwed up, we don't have a filename */
      DESTROYGLOBALS();
      return PK_NOZIP;
   }

   if (!Wiz_SetOpts((zvoid *)&G, lpDCL))
   {
      DESTROYGLOBALS();
      return PK_MEM;
   }

#ifdef SFX
   G.zipfn = lpDCL->lpszZipFN;
   G.argv0 = lpDCL->lpszZipFN;
#endif

   /* Here is the actual call to "unzip" the files (or whatever else you
    * are doing.)
    */
   retcode = Wiz_Unzip((zvoid *)&G, ifnc, ifnv, xfnc, xfnv);

   DESTROYGLOBALS();
   return retcode;
}


/*
This calling wrapper provided a method to pass file lists as plain strings
instead of the usual string arrays. For VB Users only...
ifnc       = number of file names being passed. If all files are to be
             extracted, then this can be zero.
ExtList    = Pointer to a list of file names to be extracted, separated by
             white space. If all files are to be extracted, then this should
             be NULL. Parameter ifnc should have an accurate count of the
             number of filenames being passed in.
xfnc       = number of "file names to be excluded from processing" being
             passed. If all files are to be extracted, set this to zero.
ExcList    = Pointer to a list of file names to be excluded from processing.
             Parameter xfnc should have an accurate count of the number of
             the number of filenames being passed in.
lpDCL      = pointer to a structure with the flags for setting the
             various options, as well as the zip file name.
lpUserFunc = pointer to a structure that contains pointers to functions
             in the calling application, as well as sizes passed back to
             the calling application etc.
*/

int WINAPI Wiz_SingleEntryUnzpList(unsigned int ifnc, LPCSTR ExtList,
   unsigned int xfnc, LPCSTR ExcList,
   LPDCL lpDCL, LPUSERFUNCTIONS lpUserFunc)
{
    int retcode;
    char **argVExt, **argVExc;
    unsigned int argCExt, argCExc;

    argCExt = argCExc = 0;

    if (ExtList != NULL)
    {
        if ((argVExt = (char **)malloc((ifnc)*sizeof(char *))) == NULL)
        {
            fprintf(stdout, "Unable to allocate memory in unzip dll\n");
            return PK_MEM;
        }
        if ((retcode = UnzipParseString(ExtList, &argCExt, &argVExt)) != PK_OK)
            return retcode;
    }

    if (ExcList != NULL)
    {
        if ((argVExc = (char **)malloc((ifnc)*sizeof(char *))) == NULL)
        {
            fprintf(stdout, "Unable to allocate memory in unzip dll\n");
            UnzipFreeArguments(argCExt, &argVExt);
            return PK_MEM;
        }
        if ((retcode = UnzipParseString(ExcList, &argCExc, &argVExc)) != PK_OK)
        {
            UnzipFreeArguments(argCExt, &argVExt);
            return retcode;
        }
    }

    retcode = Wiz_SingleEntryUnzip(argCExt, argVExt, argCExc, argVExc,
                                   lpDCL, lpUserFunc);
    UnzipFreeArguments(argCExc, &argVExc);
    UnzipFreeArguments(argCExt, &argVExt);
    return retcode;
}


int win_fprintf(zvoid *pG, FILE *file, unsigned int size, char far *buffer)
{
   if ((file != stderr) && (file != stdout))
   {
      return write(fileno(file),(char far *)(buffer),size);
   }
   if (!fNoPrinting)
      return G.lpUserFunctions->print((LPSTR)buffer, size);
   return (int)size;
}

/**********************************
 * Function DllMessagePrint()     *
 *                                *
 * Send messages to status window *
 **********************************/
#ifdef __BORLANDC__
#pragma argsused
#endif
static int UZ_EXP DllMessagePrint(pG, buf, size, flag)
    zvoid *pG;      /* globals struct:  always passed */
    uch *buf;       /* preformatted string to be printed */
    ulg size;       /* length of string (may include nulls) */
    int flag;       /* flag bits */
{
    if (!fNoPrinting)
        return G.lpUserFunctions->print((LPSTR)buf, size);
    else
        return (int)size;
}

#if 0 /* currently unused */
/********************************
 * Function DllDisplayPrint()   *
 *                              *
 * Send files to display window *
 ********************************/
#ifdef __BORLANDC__
#pragma argsused
#endif
int DllDisplayPrint(pG, buf, size, flag)
    zvoid *pG;      /* globals struct:  always passed */
    uch *buf;       /* preformatted string to be printed */
    ulg size;       /* length of string (may include nulls) */
    int flag;       /* flag bits */
{
    return (!fNoPrinting
            ? G.lpUserFunctions->print((LPSTR)buf, size)
            : (int)size);
}
#endif /* never */


/**********************************
 * Function UzpPassword()         *
 *                                *
 * Prompt for decryption password *
 **********************************/
#ifdef __BORLANDC__
#pragma argsused
#endif
int UZ_EXP UzpPassword(pG, rcnt, pwbuf, size, zfn, efn)
    zvoid *pG;          /* globals struct: always passed */
    int *rcnt;          /* retry counter */
    char *pwbuf;        /* buffer for password */
    int size;           /* size of password buffer */
    ZCONST char *zfn;   /* name of zip archiv */
    ZCONST char *efn;   /* name of archiv entry being processed */
{
#if CRYPT
    LPCSTR m;

    if (*rcnt == 0) {
        *rcnt = 2;
        m = "Enter password for: ";
    } else {
        (*rcnt)--;
        m = "Password incorrect--reenter: ";
    }

    return (*G.lpUserFunctions->password)((LPSTR)pwbuf, size, m, (LPCSTR)efn);
#else /* !CRYPT */
    return IZ_PW_ERROR; /* internal error, function should never get called */
#endif /* ?CRYPT */
} /* end function UzpPassword() */

/* Turn off all messages to the calling application */
void WINAPI Wiz_NoPrinting(int f)
{
    fNoPrinting = f;
}

/* Dummy sound function for those applications that don't use sound */
static void WINAPI DummySound(void)
{
}

/* Interface between WINDLL specific service callback functions and the
   generic DLL's "status report & user interception" callback */
#ifdef __BORLANDC__
#pragma argsused
#endif
static int WINAPI Wiz_StatReportCB(zvoid *pG, int fnflag, ZCONST char *zfn,
                    ZCONST char *efn, ZCONST zvoid *details)
{
    int rval = UZ_ST_CONTINUE;

    switch (fnflag) {
      case UZ_ST_START_EXTRACT:
        if (G.lpUserFunctions->sound != NULL)
            (*G.lpUserFunctions->sound)();
        break;
      case UZ_ST_FINISH_MEMBER:
        if ((G.lpUserFunctions->ServCallBk != NULL) &&
            (*G.lpUserFunctions->ServCallBk)(efn,
                                             (details == NULL ? 0L :
#ifdef Z_UINT8_DEFINED
                                              (z_uint8)(*((zusz_t *)details))
#else
                                              *((zusz_t *)details)
#endif
                                             )))
            rval = UZ_ST_BREAK;
        else if (G.lpUserFunctions->ServCallBk_i32 != NULL) {
             unsigned long siz_u4L = 0L;
             unsigned long siz_u4H = 0L;
             if (details != NULL) {
                 siz_u4L = (unsigned long)(*(zusz_t *)details);
#ifdef ZIP64_SUPPORT
                 siz_u4H = (unsigned long)((*(zusz_t *)details) >> 32);
#endif
             }
             if ((*G.lpUserFunctions->ServCallBk_i32)(efn, siz_u4L, siz_u4H))
                 rval = UZ_ST_BREAK;
        }
        break;
      case UZ_ST_IN_PROGRESS:
        break;
      default:
        break;
    }
    return rval;
}


#ifndef SFX
#ifndef __16BIT__

int WINAPI Wiz_UnzipToMemory(LPSTR zip, LPSTR file,
    LPUSERFUNCTIONS lpUserFunctions, UzpBuffer *retstr)
{
    int r;
#ifndef CRTL_CP_IS_ISO
    char *intern_zip, *intern_file;
#endif

    CONSTRUCTGLOBALS();
#ifndef CRTL_CP_IS_ISO
    intern_zip = (char *)malloc(strlen(zip)+1);
    if (intern_zip == NULL) {
       DESTROYGLOBALS();
       return PK_MEM;
    }
    intern_file = (char *)malloc(strlen(file)+1);
    if (intern_file == NULL) {
       DESTROYGLOBALS();
       free(intern_zip);
       return PK_MEM;
    }
    ISO_TO_INTERN(zip, intern_zip);
    ISO_TO_INTERN(file, intern_file);
#   define zip intern_zip
#   define file intern_file
#endif
    if (!Wiz_Init((zvoid *)&G, lpUserFunctions)) {
       DESTROYGLOBALS();
       return PK_BADERR;
    }
    G.redirect_data = 1;

    r = (unzipToMemory(__G__ zip, file, retstr) == PK_COOL);

    DESTROYGLOBALS();
#ifndef CRTL_CP_IS_ISO
#  undef file
#  undef zip
    free(intern_file);
    free(intern_zip);
#endif
    if (!r && retstr->strlength) {
       free(retstr->strptr);
       retstr->strptr = NULL;
    }
    return r;
}




/* Purpose: Determine if file in archive contains the string szSearch

   Parameters: archive  = archive name
               file     = file contained in the archive. This cannot be
                          a wildcard to be meaningful
               pattern  = string to search for
               cmd      = 0 - case-insensitive search
                          1 - case-sensitve search
                          2 - case-insensitive, whole words only
                          3 - case-sensitive, whole words only
               SkipBin  = if true, skip any files that have control
                          characters other than CR, LF, or tab in the first
                          100 characters.

   Returns:    TRUE if a match is found
               FALSE if no match is found
               -1 on error

   Comments: This does not pretend to be as useful as the standard
             Unix grep, which returns the strings associated with a
             particular pattern, nor does it search past the first
             matching occurrence of the pattern.
 */

int WINAPI Wiz_Grep(LPSTR archive, LPSTR file, LPSTR pattern, int cmd,
                   int SkipBin, LPUSERFUNCTIONS lpUserFunctions)
{
    int retcode = FALSE, compare;
    ulg i, j, patternLen, buflen;
    char * sz, *p;
    UzpBuffer retstr;

    /* Turn off any windows printing functions, as they may not have been
     * identified yet. There is no requirement that we initialize the
     * dll with printing stuff for this. */
    Wiz_NoPrinting(TRUE);

    if (!Wiz_UnzipToMemory(archive, file, lpUserFunctions, &retstr)) {
       Wiz_NoPrinting(FALSE);
       return -1;   /* not enough memory, file not found, or other error */
    }

    if (SkipBin) {
        if (retstr.strlength < 100)
            buflen = retstr.strlength;
        else
            buflen = 100;
        for (i = 0; i < buflen; i++) {
            if (iscntrl(retstr.strptr[i])) {
                if ((retstr.strptr[i] != 0x0A) &&
                    (retstr.strptr[i] != 0x0D) &&
                    (retstr.strptr[i] != 0x09))
                {
                    /* OK, we now think we have a binary file of some sort */
                    free(retstr.strptr);
                    Wiz_NoPrinting(FALSE);
                    return FALSE;
                }
            }
        }
    }

    patternLen = strlen(pattern);

    if (retstr.strlength < patternLen) {
        free(retstr.strptr);
        Wiz_NoPrinting(FALSE);
        return FALSE;
    }

    sz = malloc(patternLen + 3); /* add two in case doing whole words only */
    if (cmd > 1) {
        strcpy(sz, " ");
        strcat(sz, pattern);
        strcat(sz, " ");
    } else
        strcpy(sz, pattern);

    if ((cmd == 0) || (cmd == 2)) {
        for (i = 0; i < strlen(sz); i++)
            sz[i] = toupper(sz[i]);
        for (i = 0; i < retstr.strlength; i++)
            retstr.strptr[i] = toupper(retstr.strptr[i]);
    }

    for (i = 0; i < (retstr.strlength - patternLen); i++) {
        p = &retstr.strptr[i];
        compare = TRUE;
        for (j = 0; j < patternLen; j++) {
            /* We cannot do strncmp here, as we may be dealing with a
             * "binary" file, such as a word processing file, or perhaps
             * even a true executable of some sort. */
            if (p[j] != sz[j]) {
                compare = FALSE;
                break;
            }
        }
        if (compare == TRUE) {
            retcode = TRUE;
            break;
        }
    }

    free(sz);
    free(retstr.strptr);
    Wiz_NoPrinting(FALSE); /* Turn printing back on */
    return retcode;
}
#endif /* !__16BIT__ */

int WINAPI Wiz_Validate(LPSTR archive, int AllCodes)
{
    return UzpValidate((char *)archive, AllCodes);
}

#endif /* !SFX */