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  1. /*
  2.     This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop
  3.     Copyright (C) 2003-2019 Toby Thain, toby@telegraphics.com.au
  4.  
  5.     This program is free software; you can redistribute it and/or modify
  6.     it under the terms of the GNU General Public License as published by
  7.     the Free Software Foundation; either version 2 of the License, or
  8.     (at your option) any later version.
  9.  
  10.     This program is distributed in the hope that it will be useful,
  11.     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13.     GNU General Public License for more details.
  14.  
  15.     You should have received a copy of the GNU General Public License
  16.     along with this program; if not, write to the Free Software
  17.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18. */
  19.  
  20. #include "ff.h"
  21.  
  22. #include "file_compat.h"
  23.  
  24. #include <string.h>
  25.  
  26. static UINT16 parm_id;
  27.  
  28. // see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/resources/introductiontoresources/resourcereference/resourcefunctions/findresource.asp
  29. static BOOL CALLBACK enumnames(HMODULE hModule,LPCTSTR lpszType,
  30.                                                            LPTSTR lpszName,LONG_PTR lParam)
  31. {
  32.         if(IS_INTRESOURCE(lpszName))
  33.                 parm_id = (UINT16)((intptr_t)lpszName & 0xFFFF);
  34.         return false; // we only want the first one
  35. }
  36.  
  37. Boolean readPARMresource(HMODULE hm,char **reason,int readobfusc){
  38.         HRSRC resinfo;
  39.         HANDLE h;
  40.         Ptr pparm;
  41.         int res = false;
  42.  
  43.         parm_id = PARM_ID;
  44.         EnumResourceNames(hm,"PARM",enumnames,0);
  45.  
  46.         // load first PARM resource
  47.         if( (resinfo = FindResource(hm,MAKEINTRESOURCE(parm_id),"PARM")) ){
  48.                 if( (h = LoadResource(hm,resinfo)) && (pparm = LockResource(h)) )
  49.                         res = readPARM(pparm,&gdata->parm,reason,1 /*Windows format resource*/);
  50.         }else if( readobfusc && (resinfo = FindResource(hm,MAKEINTRESOURCE(OBFUSCDATA_ID),RT_RCDATA)) ){
  51.                 if( (h = LoadResource(hm,resinfo)) && (pparm = LockResource(h)) ){
  52.                         // Fix by DM, 18 Dec 2018:
  53.                         // We need to copy the information, because the resource data is read-only
  54.                         DWORD resSize = SizeofResource(hm,resinfo);
  55.                         byte* copy = malloc(resSize);
  56.                         memcpy(copy, pparm, resSize);
  57.                         obfusc(copy, resSize);
  58.                         res = readPARM(copy,&gdata->parm,reason,1);
  59.                         free(copy);
  60.                 }
  61.         }
  62.         return res;
  63. }
  64.  
  65. Boolean loadfile(StandardFileReply *sfr,char **reason){
  66.         Boolean readok = false;
  67.         HMODULE hm;
  68.  
  69.         // First, try to read the file as AFS/PFF/TXT file
  70.         if (readok = readfile(sfr,reason)) {
  71.                 gdata->parmloaded = false;
  72.         }
  73.  
  74.         // If that didn't work, try to load as Windows image file (Resource API for 8BF/PRM files)
  75.         if (!readok) {
  76.                 // see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/loadlibraryex.asp
  77.                 if (hm = LoadLibraryEx(myp2cstr(sfr->sfFile.name),NULL,LOAD_LIBRARY_AS_DATAFILE)) {
  78.                         if (readPARMresource(hm,reason,0)) {
  79.                                 if (gdata->parm.iProtected) {
  80.                                         *reason = "The filter is protected.";
  81.                                 } else {
  82.                                         readok = gdata->parmloaded = true;
  83.                                 }
  84.                         } else {
  85.                                 *reason = "It is not a standalone filter made by Filter Factory/Filter Foundry.";
  86.                         }
  87.                         FreeLibrary(hm);
  88.                 }
  89.         }
  90.  
  91.         // If nothing worked, we will try to find a PARM resource (MacOS plugin, or NE executable on Win64)
  92.         if (!readok) {
  93.                 if (readok = read8bfplugin(sfr, reason)) {
  94.                         gdata->parmloaded = true;
  95.                 } else {
  96.                         *reason = "PARM resource was not found in this plugin file, or this is not a standalone plugin.";
  97.                 }
  98.         }
  99.  
  100.         // Check if we had success
  101.         if (!readok) {
  102.                 *reason = "PARM resource was not found in this plugin file, or this is not a standalone plugin.";
  103.         }
  104.  
  105.         return readok;
  106. }
  107.