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  1. /*
  2.     This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop
  3.     Copyright (C) 2003-2009 Toby Thain, toby@telegraphics.com.au
  4.     Copyright (C) 2018-2021 Daniel Marschall, ViaThinkSoft
  5.  
  6.     This program is free software; you can redistribute it and/or modify
  7.     it under the terms of the GNU General Public License as published by
  8.     the Free Software Foundation; either version 2 of the License, or
  9.     (at your option) any later version.
  10.  
  11.     This program 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
  14.     GNU General Public License for more details.
  15.  
  16.     You should have received a copy of the GNU General Public License
  17.     along with this program; if not, write to the Free Software
  18.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19. */
  20.  
  21. #include "ff.h"
  22.  
  23. #include <Resources.h>
  24.  
  25. #include "file_compat.h"
  26.  
  27. Boolean readPARMresource(HMODULE hm,char **reason){
  28.         Boolean res = false;
  29.         Handle h;
  30.  
  31.         if( (h = Get1Resource(PARM_TYPE,PARM_ID_NEW)) ||
  32.             (h = Get1Resource(PARM_TYPE,PARM_ID_OLD)) )
  33.         {
  34.                 HLock(h);
  35.                 if(GetHandleSize(h) == sizeof(PARM_T)) {
  36.                         res = readPARM(*h, &gdata->parm, reason, 0 /*Mac format resource*/);
  37.                         gdata->obfusc = false;
  38.                         ReleaseResource(h);
  39.                 } else {
  40.                         // PARM has wrong size. Should not happen
  41.                         gdata->obfusc = false;
  42.                         ReleaseResource(h);
  43.                         return false;
  44.                 }
  45.         }
  46.         else if( ((h = Get1Resource(OBFUSCDATA_TYPE_NEW,OBFUSCDATA_ID_NEW)) ||
  47.                   (h = Get1Resource(OBFUSCDATA_TYPE_OLD,OBFUSCDATA_ID_OLD))) )
  48.         {
  49.                 HLock(h);
  50.                 if(GetHandleSize(h) == sizeof(PARM_T)) {
  51.                         deobfusc((PARM_T*)*h);
  52.                         res = readPARM(*h, &gdata->parm, reason, 0 /*Mac format resource*/);
  53.                         gdata->obfusc = true;
  54.                         ReleaseResource(h);
  55.                 } else {
  56.                         // Obfuscated PARM has wrong size. Should not happen
  57.                         gdata->obfusc = false;
  58.                         ReleaseResource(h);
  59.                         return false;
  60.                 }
  61.         }
  62.         if (!res) {
  63.                 gdata->obfusc = false;
  64.         }
  65.         return res;
  66. }
  67.  
  68. static Boolean readmacplugin(StandardFileReply *sfr,char **reason){
  69.         Boolean res = false;
  70.         short rrn = FSpOpenResFile(&sfr->sfFile,fsRdPerm);
  71.  
  72.         if(rrn != -1){
  73.                 if(readPARMresource(NULL,reason))
  74.                         res = true;
  75.                 CloseResFile(rrn);
  76.         }else
  77.                 *reason = "Could not open file.";
  78.         return res;
  79. }
  80.  
  81. Boolean loadfile(StandardFileReply *sfr,char **reason){
  82.         Boolean readok = false;
  83.         FInfo fndrInfo;
  84.  
  85.         // The different read-functions will return true if the resource was successfully loaded,
  86.         // or false otherwise. If *reason is set, then the answer is clearly "No". If the result
  87.         // is just false, it means that the program should continue with the next read-function.
  88.         *reason = NULL;
  89.  
  90.         if(FSpGetFInfo(&sfr->sfFile,&fndrInfo) == noErr){
  91.                 // first try to read text parameters (AFS, TXT, PFF)
  92.                 if (*reason == NULL) {
  93.                         if (readfile_afs_pff(sfr,reason)) {
  94.                                 gdata->parmloaded = false;
  95.                                 gdata->obfusc = false;
  96.                                 return true;
  97.                         }
  98.                 }
  99.  
  100.                 // then try "Filters Unlimited" file (FFX)
  101.                 if (*reason == NULL) {
  102.                         if (readfile_ffx(sfr,reason)) {
  103.                                 gdata->parmloaded = true;
  104.                                 gdata->obfusc = false;
  105.                                 return true;
  106.                         }
  107.                 }
  108.  
  109.                 // then try "PluginCommander TXT" file (TXT)
  110.                 if (*reason == NULL) {
  111.                         if (readfile_picotxt(sfr,reason)) {
  112.                                 gdata->parmloaded = true;
  113.                                 gdata->obfusc = false;
  114.                                 return true;
  115.                         }
  116.                 }
  117.  
  118.                 // Try Mac plugin resource
  119.                 if (*reason == NULL) {
  120.                         if (readmacplugin(sfr,reason)) {
  121.                                 if (gdata->parm.iProtected) {
  122.                                         *reason = "The filter is protected.";
  123.                                 } else {
  124.                                         gdata->parmloaded = true;
  125.                                         return true;
  126.                                 }
  127.                         }
  128.                 }
  129.  
  130.                 // Try Windows resources (we need to do a binary scan)
  131.                 // Note that we cannot detect obfuscated filters here!
  132.                 if (*reason == NULL) {
  133.                         if (readfile_8bf(sfr,reason)) {
  134.                                 if (gdata->parm.iProtected) {
  135.                                         *reason = "The filter is protected.";
  136.                                 } else {
  137.                                         gdata->parmloaded = true;
  138.                                         return true;
  139.                                 }
  140.                         }
  141.                 }
  142.  
  143.                 // We didn't had success. If we have a clear reason, return false and the reason.
  144.                 // If we don't have a clear reason, set a generic reason and return false.
  145.                 if (*reason == NULL) {
  146.                         *reason = "It is not a text parameter file, nor a standalone Mac/PC filter created by Filter Factory/Filter Foundry.";
  147.                 }
  148.                 return false;
  149.         } else {
  150.                 *reason = "File cannot be opened";
  151.                 return false;
  152.         }
  153. }
  154.