dlls/cabinet/cabinet_main.c

   1 /*
   2  * cabinet.dll main
   3  *
   4  * Copyright 2002 Patrik Stridvall
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winerror.h"
  26
  27 #include <assert.h>
  28
  29 #define NO_SHLWAPI_REG
  30 #include "shlwapi.h"
  31 #undef NO_SHLWAPI_REG
  32
  33 #include <string.h>
  34
  35 #include "cabinet.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(cabinet);
  40
  41 /***********************************************************************
  42  * DllGetVersion (CABINET.2)
  43  *
  44  * Retrieves version information of the 'CABINET.DLL'
  45  *
  46  * PARAMS
  47  *     pdvi [O] pointer to version information structure.
  48  *
  49  * RETURNS
  50  *     Success: S_OK
  51  *     Failure: E_INVALIDARG
  52  *
  53  * NOTES
  54  *     Supposedly returns version from IE6SP1RP1
  55  */
  56 HRESULT WINAPI CABINET_DllGetVersion (DLLVERSIONINFO *pdvi)
  57 {
  58   WARN("hmmm... not right version number \"5.1.1106.1\"?\n");
  59
  60   if (pdvi->cbSize != sizeof(DLLVERSIONINFO)) return E_INVALIDARG;
  61
  62   pdvi->dwMajorVersion = 5;
  63   pdvi->dwMinorVersion = 1;
  64   pdvi->dwBuildNumber = 1106;
  65   pdvi->dwPlatformID = 1;
  66
  67   return S_OK;
  68 }
  69
  70 /***********************************************************************
  71  * Extract (CABINET.3)
  72  *
  73  * Apparently an undocumented function, presumably to extract a CAB file
  74  * to somewhere...
  75  *
  76  * PARAMS
  77  *   unknown [IO] unknown pointer
  78  *   what    [I]  char* describing what to uncompress, I guess.
  79  *
  80  * RETURNS
  81  *     Success: S_OK
  82  *     Failure: E_OUTOFMEMORY (?)
  83  */
  84 HRESULT WINAPI Extract(DWORD unknown, LPCSTR what)
  85 {
  86   LPCSTR whatx;
  87   LPSTR dir, dirx, lastoption, x;
  88   BOOL updatelastoption;
  89
  90   TRACE("(unknown == %0lx, what == %s)\n", unknown, debugstr_a(what));
  91
  92   dir = LocalAlloc(LPTR, strlen(what));
  93   if (!dir) return E_OUTOFMEMORY;
  94
  95   /* copy the filename up to the last pathsep to construct the dirname */
  96   whatx = what;
  97   dirx = dir;
  98   lastoption = NULL;
  99   while (*whatx) {
 100     if ((*whatx == '\\') || (*whatx == '/')) {
 101       /* unless all chars between *dirx and lastoption are pathsep's, we
 102          remember our location in dir as lastoption */
 103       if (lastoption) {
 104         updatelastoption = FALSE;
 105         for (x = lastoption; x < dirx; x++)
 106           if ((*dirx != '\\') && (*dirx != '/')) {
 107             updatelastoption = TRUE;
 108             break;
 109           }
 110         if (updatelastoption) lastoption = dirx;
 111       } else
 112         lastoption = dirx;
 113     }
 114     *dirx++ = *whatx++;
 115   }
 116
 117   if (!lastoption) {
 118     /* FIXME: I guess use the cwd or something? */
 119     assert(FALSE);
 120   } else {
 121     *lastoption = '\0';
 122   }
 123
 124   TRACE("extracting to dir: %s\n", debugstr_a(dir));
 125
 126   /* FIXME: what to do on failure? */
 127   if (!process_cabinet(what, dir, FALSE, FALSE))
 128     return E_OUTOFMEMORY;
 129
 130   LocalFree(dir);
 131
 132   return S_OK;
 133 }