Added more error code to Packet class

include/Engine/Network/Package.h

@@ -20,6 +20,10 @@ public:
     template<typename T>
     void AddPrimitive(T val)
     {
+        // Check if we are trying to add more than the package can fit.
+        if (m_MaxPacketSize < m_Offset + sizeof(T)) {
+            LOG_WARNING("Packet AddPrimitive(): You are trying to add more than we have allocated for!");
+        }
         memcpy(m_Data + m_Offset, &val, sizeof(T));
         m_Offset += sizeof(T);
     }
@@ -28,7 +32,7 @@ public:
     T PopFrontPrimitive()
     {
         if (m_Offset < m_ReturnDataOffset + sizeof(T)) {
-            LOG_WARNING("Package PopFrontPrimitive(): You are trying to remove more than what exists in this package!");
+            LOG_WARNING("Packet PopFrontPrimitive(): You are trying to remove more than what exists in this package!");
             return -1;
         }
         T returnValue;
@@ -51,6 +55,7 @@ private:
     char* m_Data;
     unsigned int m_ReturnDataOffset = 0;
     int m_Offset = 0;
+    unsigned int m_MaxPacketSize = 128;
 };
 
 #endif

src/Engine/Network/Package.cpp

@@ -16,7 +16,11 @@ Package::Package(MessageType type, unsigned int& packageID)
 Package::Package(char* data, const int sizeOfPackage)
 {
     // Create message
+
+    // Resize message
+    m_MaxPacketSize = sizeOfPackage;
     m_Data = new char[sizeOfPackage];
+    // Copy data newly allocated memory
     memcpy(m_Data, data, sizeOfPackage);
     m_Offset = sizeOfPackage;
 }
@@ -29,14 +33,18 @@ Package::~Package()
 void Package::AddString(std::string str)
 {
     // Message, add one extra byte for null terminator
-    memcpy(m_Data + m_Offset, str.data(), (str.size() + 1) * sizeof(char));
-    m_Offset += (str.size() + 1) * sizeof(char);
+    int sizeOfString = str.size() + 1;
+    if (m_Offset + sizeOfString > m_MaxPacketSize) {
+        LOG_WARNING("Package::AddString(): Data size in packet exceeded maximum package size.\n");
+    }
+    memcpy(m_Data + m_Offset, str.data(), sizeOfString * sizeof(char));
+    m_Offset += sizeOfString * sizeof(char);
 }
 
 void Package::AddData(char * data, int sizeOfData)
 { 
-    if (m_Offset + sizeOfData > 128) {
-        LOG_WARNING("Package::AddData(): Data size in package exceeded maximum package size.\n");
+    if (m_Offset + sizeOfData > m_MaxPacketSize) {
+        LOG_WARNING("Package::AddData(): Data size in packet exceeded maximum package size.\n");
     }
     memcpy(m_Data + m_Offset, data, sizeOfData);
     m_Offset += sizeOfData;
@@ -46,7 +54,7 @@ std::string Package::PopFrontString()
 {
     std::string returnValue(m_Data + m_ReturnDataOffset);
     if (m_Offset < m_ReturnDataOffset + returnValue.size()){
-        LOG_WARNING("Package PopFrontString(): Oh no! You are trying to remove things outside my memory kingdom");
+        LOG_WARNING("packet PopFrontString(): Oh no! You are trying to remove things outside my memory kingdom");
         return "PopFrontString Failed";
     }   
     // +1 for null terminator.
@@ -56,6 +64,10 @@ std::string Package::PopFrontString()
 
 char * Package::PopData(int SizeOfData)
 {
+    if (m_Offset < m_ReturnDataOffset + SizeOfData) {
+        LOG_WARNING("packet PopData(): Oh no! You are trying to remove things outside my memory kingdom");
+        return nullptr;
+    }
     unsigned int oldReturnDataOffset = m_ReturnDataOffset;
     m_ReturnDataOffset += SizeOfData;
     return (m_Data + oldReturnDataOffset);