Implemented safe CString buffer creation with a guard byte at the end.

git-svn-id: https://svn.microneil.com/svn/CodeDweller/trunk@75 d34b734f-a00e-4b39-a726-e4eeb87269ab

configuration.cpp

 
 //// Configuratino Data ////////////////////////////////////////////////////////
 
+char* newCStringBuffer(size_t requestedSize) {
+    const char NullTerminator = 0;
+    size_t safeSize = requestedSize + 1;
+    char* theBufferPointer = new char[safeSize];
+    theBufferPointer[requestedSize] = NullTerminator;
+    return theBufferPointer;
+}
+
 ConfigurationData::ConfigurationData(const char* Data, int Length) :            // Raw constructor from buffer.
   myBufferSize(Length),                                                         // and it's length.
   myIndex(0),                                                                   // Our Index is zero
   myLine(1) {                                                                   // We start on line 1
-    myDataBuffer = new char[myBufferSize];                                      // Allocate a buffer.
+    myDataBuffer = newCStringBuffer(myBufferSize);                              // Allocate a buffer.
     memcpy(myDataBuffer, Data, myBufferSize);                                   // Copy the data.
 }
 
         ifstream CFGFile(FileName);                                             // Open the file.
         CFGFile.seekg(0,ios::end);                                              // Seek to the end
         myBufferSize = CFGFile.tellg();                                         // to find out what size it is.
-        myDataBuffer = new char[myBufferSize];                                  // Make a new buffer the right size.
+        myDataBuffer = newCStringBuffer(myBufferSize);                          // Make a new buffer the right size.
         CFGFile.seekg(0,ios::beg);                                              // Seek to the beginning and
         CFGFile.read(myDataBuffer, myBufferSize);                               // read the file into the buffer.
         if(CFGFile.bad()) {                                                     // If the read failed, we're unusable!
         ifstream CFGFile(FileName.c_str());                                     // Open the file.
         CFGFile.seekg(0,ios::end);                                              // Seek to the end
         myBufferSize = CFGFile.tellg();                                         // to find out what size it is.
-        myDataBuffer = new char[myBufferSize];                                  // Make a new buffer the right size.
+        myDataBuffer = newCStringBuffer(myBufferSize);                          // Make a new buffer the right size.
         CFGFile.seekg(0,ios::beg);                                              // Seek to the beginning and
         CFGFile.read(myDataBuffer, myBufferSize);                               // read the file into the buffer.
         if(CFGFile.bad()) {                                                     // If the read failed, we're unusable!