Removed feature to auto fix corrupted cards and added it as the user selectable option because it conflicts with the newly discovered FreePSXBoot exploit

Author: ShendoXT

.vs/MemcardRex/v16/.suo

@@ -72,6 +72,7 @@ public struct programSettings
             public int backupMemcards;             //Backup Memory Card settings
             public int warningMessage;             //Warning message settings
             public int restoreWindowPosition;      //Restore window position
+            public int fixCorruptedCards;          //Try to fix corrupted memory cards
             public int glassStatusBar;             //Vista glass status bar
             public int formatType;                 //Type of formatting for hardware interfaces
             public string listFont;                //List font
@@ -207,6 +208,9 @@ private void loadProgramSettings()
                 //Load format type
                 mainSettings.formatType = xmlAppSettings.readXmlEntryInt("HardwareFormatType", 0, 1);
 
+                //Load fix corrupted cards value
+                mainSettings.fixCorruptedCards = xmlAppSettings.readXmlEntryInt("FixCorruptedCards", 0, 1);
+
                 //Check if window position should be read
                 if (mainSettings.restoreWindowPosition == 1)
                 {
@@ -266,6 +270,9 @@ private void saveProgramSettings()
             //Set format type
             xmlAppSettings.writeXmlEntry("HardwareFormatType", mainSettings.formatType.ToString());
 
+            //Set fix corrupted cards value
+            xmlAppSettings.writeXmlEntry("FixCorruptedCards", mainSettings.fixCorruptedCards.ToString());
+
             //Set window X coordinate
             xmlAppSettings.writeXmlEntry("WindowX", this.Location.X.ToString());
 
@@ -276,6 +283,12 @@ private void saveProgramSettings()
             xmlAppSettings.closeXmlWriter();
         }
 
+        //Quick and dirty settings bool converter
+        private bool getSettingsBool(int intValue)
+        {
+            return (intValue == 1) ? true : false;
+        }
+
         //Backup a Memory Card
         private void backupMemcard(string fileName)
         {
@@ -356,7 +369,7 @@ private void openCard(string fileName)
             PScard.Add(new ps1card());
 
             //Try to open card
-            errorMsg = PScard[PScard.Count - 1].openMemoryCard(fileName);
+            errorMsg = PScard[PScard.Count - 1].openMemoryCard(fileName, getSettingsBool(mainSettings.fixCorruptedCards));
 
             //If card is sucesfully opened proceed further, else destroy it
             if (errorMsg == null)
@@ -449,7 +462,7 @@ private void saveCardDialog(int listIndex)
         //Save a Memory Card to a given filename
         private void saveMemoryCard(int listIndex, string fileName, byte memoryCardType)
         {
-            if (PScard[listIndex].saveMemoryCard(fileName, memoryCardType))
+            if (PScard[listIndex].saveMemoryCard(fileName, memoryCardType, getSettingsBool(mainSettings.fixCorruptedCards)))
             {
                 refreshListView(listIndex, cardList[listIndex].SelectedIndices[0]);
                 refreshStatusStrip();
@@ -1660,7 +1673,7 @@ private void cardReaderRead(byte[] readData)
                 PScard.Add(new ps1card());
 
                 //Fill the card with the new data
-                PScard[PScard.Count - 1].openMemoryCardStream(readData);
+                PScard[PScard.Count - 1].openMemoryCardStream(readData, getSettingsBool(mainSettings.fixCorruptedCards));
 
                 //Temporary set a bogus file location (to fool filterNullCard function)
                 PScard[PScard.Count - 1].cardLocation = "\0";
@@ -2054,7 +2067,7 @@ private void dexDriveMenuWrite_Click(object sender, EventArgs e)
             if (PScard.Count > 0)
             {
                 //Open a DexDrive communication window
-                new cardReaderWindow().writeMemoryCardDexDrive(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(), 1024);
+                new cardReaderWindow().writeMemoryCardDexDrive(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(getSettingsBool(mainSettings.fixCorruptedCards)), 1024);
             }
         }
 
@@ -2087,7 +2100,7 @@ private void memCARDuinoMenuWrite_Click(object sender, EventArgs e)
             if (PScard.Count > 0)
             {
                 //Open a DexDrive communication window
-                new cardReaderWindow().writeMemoryCardCARDuino(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(), 1024);
+                new cardReaderWindow().writeMemoryCardCARDuino(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(getSettingsBool(mainSettings.fixCorruptedCards)), 1024);
             }
         }
 
@@ -2108,7 +2121,7 @@ private void pS1CardLinkMenuWrite_Click(object sender, EventArgs e)
             if (PScard.Count > 0)
             {
                 //Open a DexDrive communication window
-                new cardReaderWindow().writeMemoryCardPS1CLnk(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(), 1024);
+                new cardReaderWindow().writeMemoryCardPS1CLnk(this, appName, mainSettings.communicationPort, PScard[listIndex].saveMemoryCardStream(getSettingsBool(mainSettings.fixCorruptedCards)), 1024);
             }
         }
 
@@ -2143,21 +2156,21 @@ private void formatHardwareCard(int hardDevice)
             if (mainSettings.formatType == 0) frameNumber = 64;
 
             //Create a new card by giving a null path
-            blankCard.openMemoryCard(null);
+            blankCard.openMemoryCard(null, true);
 
             //Check what device to use
             switch (hardDevice)
             {
                 case 0:         //DexDrive
-                    new cardReaderWindow().writeMemoryCardDexDrive(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(), frameNumber);
+                    new cardReaderWindow().writeMemoryCardDexDrive(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(true), frameNumber);
                     break;
 
                 case 1:         //MemCARDuino
-                    new cardReaderWindow().writeMemoryCardCARDuino(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(), frameNumber);
+                    new cardReaderWindow().writeMemoryCardCARDuino(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(true), frameNumber);
                     break;
 
                 case 2:         //PS1CardLink
-                    new cardReaderWindow().writeMemoryCardPS1CLnk(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(), frameNumber);
+                    new cardReaderWindow().writeMemoryCardPS1CLnk(this, appName, mainSettings.communicationPort, blankCard.saveMemoryCardStream(true), frameNumber);
                     break;
             }
         }

MemcardRex/GUI/mainWindow.cs

@@ -36,6 +36,7 @@ public void initializeDialog(mainWindow.programSettings progSettings)
             if (progSettings.glassStatusBar == 1) glassCheckbox.Checked = true; else glassCheckbox.Checked = false;
             if (progSettings.warningMessage == 1) backupWarningCheckBox.Checked = true; else backupWarningCheckBox.Checked = false;
             if (progSettings.restoreWindowPosition == 1) restorePositionCheckbox.Checked = true; else restorePositionCheckbox.Checked = false;
+            if (progSettings.fixCorruptedCards == 1) fixCorruptedCardsCheckbox.Checked = true; else fixCorruptedCardsCheckbox.Checked = false;
 
             //Load all COM ports found on the system
             foreach (string port in SerialPort.GetPortNames())
@@ -77,6 +78,7 @@ private void applySettings()
             if (glassCheckbox.Checked == true) progSettings.glassStatusBar = 1; else progSettings.glassStatusBar = 0;
             if (backupWarningCheckBox.Checked == true) progSettings.warningMessage = 1; else progSettings.warningMessage = 0;
             if (restorePositionCheckbox.Checked == true) progSettings.restoreWindowPosition = 1; else progSettings.restoreWindowPosition = 0;
+            if (fixCorruptedCardsCheckbox.Checked == true) progSettings.fixCorruptedCards = 1; else progSettings.fixCorruptedCards = 0;
             if (fontCombo.SelectedIndex != -1) progSettings.listFont = fontCombo.SelectedItem.ToString();
 
             hostWindow.applyProgramSettings(progSettings);

MemcardRex/GUI/preferencesWindow.Designer.cs

@@ -112,9 +112,9 @@
     <value>2.0</value>
   </resheader>
   <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
 </root>

MemcardRex/GUI/preferencesWindow.cs

@@ -1,5 +1,5 @@
 //PS1 Memory Card class
-//Shendo 2009-2013
+//Shendo 2009-2021
 
 using System;
 using System.Collections.Generic;
@@ -88,20 +88,25 @@ private void loadDataFromRawCard()
         }
 
         //Recreate raw Memory Card
-        private void loadDataToRawCard()
+        private void loadDataToRawCard(bool fixData)
         {
-            //Clear existing data
-            rawMemoryCard = new byte[131072];
+            //Check if data needs to be fixed or left as is (mandatory for FreePSXBoot)
+            if (fixData)
+            {
+                //Clear existing data
+                rawMemoryCard = new byte[131072];
 
-            //Recreate the signature
-            rawMemoryCard[0] = 0x4D;        //M
-            rawMemoryCard[1] = 0x43;        //C
-            rawMemoryCard[127] = 0x0E;      //XOR (precalculated)
+                //Recreate the signature
+                rawMemoryCard[0] = 0x4D;        //M
+                rawMemoryCard[1] = 0x43;        //C
+                rawMemoryCard[127] = 0x0E;      //XOR (precalculated)
 
-            rawMemoryCard[8064] = 0x4D;     //M
-            rawMemoryCard[8065] = 0x43;     //C
-            rawMemoryCard[8191] = 0x0E;     //XOR (precalculated)
+                rawMemoryCard[8064] = 0x4D;     //M
+                rawMemoryCard[8065] = 0x43;     //C
+                rawMemoryCard[8191] = 0x0E;     //XOR (precalculated)
+            }
 
+            //This can be copied freely without fixing
             for (int slotNumber = 0; slotNumber < 15; slotNumber++)
             {
                 //Load header data
@@ -117,6 +122,10 @@ private void loadDataToRawCard()
                 }
             }
 
+
+            //Skip fixing data if it's not needed
+            if (!fixData) return;
+
             //Create authentic data (just for completeness)
             for (int i = 0; i < 20; i++)
             {
@@ -901,7 +910,7 @@ public bool openSingleSave(string fileName, int slotNumber, out int requiredSlot
         }
 
         //Save Memory Card to the given filename
-        public bool saveMemoryCard(string fileName, int memoryCardType)
+        public bool saveMemoryCard(string fileName, int memoryCardType, bool fixData)
         {
             BinaryWriter binWriter = null;
 
@@ -916,7 +925,7 @@ public bool saveMemoryCard(string fileName, int memoryCardType)
             }
 
             //Prepare data for saving
-            loadDataToRawCard();
+            loadDataToRawCard(fixData);
 
             //Check what kind of file to output according to memoryCardType
             switch (memoryCardType)
@@ -953,18 +962,18 @@ public bool saveMemoryCard(string fileName, int memoryCardType)
         }
 
         //Save (export) Memory Card to a given byte stream
-        public byte[] saveMemoryCardStream()
+        public byte[] saveMemoryCardStream(bool fixData)
         {
             //Prepare data for saving
-            loadDataToRawCard();
+            loadDataToRawCard(fixData);
 
             //Return complete Memory Card data
             return rawMemoryCard;
         }
 
 
         //Open memory card from the given byte stream
-        public void openMemoryCardStream(byte[] memCardData)
+        public void openMemoryCardStream(byte[] memCardData, bool fixData)
         {
             //Set the reference for the recieved data
             rawMemoryCard = memCardData;
@@ -974,7 +983,7 @@ public void openMemoryCardStream(byte[] memCardData)
 
             cardName = "Untitled";
 
-            calculateXOR();
+            if(fixData) calculateXOR();
             loadStringData();
             loadGMEComments();
             loadSlotTypes();
@@ -989,7 +998,7 @@ public void openMemoryCardStream(byte[] memCardData)
         }
 
         //Open Memory Card from the given filename (return error message if operation is not sucessfull)
-        public string openMemoryCard(string fileName)
+        public string openMemoryCard(string fileName, bool fixData)
         {
             //Check if the Memory Card should be opened or created
             if (fileName != null)
@@ -1070,7 +1079,7 @@ public string openMemoryCard(string fileName)
             }
 
             //Calculate XOR checksum (in case if any of the saveHeaders have corrputed XOR)
-            calculateXOR();
+            if(fixData) calculateXOR();
 
             //Convert various Memory Card data to strings
             loadStringData();