Initial BungeeCord support.

Ref.: #1392

src/Protocol/Protocol17x.cpp

@@ -100,6 +100,15 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 	m_IsEncrypted(false),
 	m_LastSentDimension(dimNotSet)
 {
+	// BungeeCord handling:
+	// If BC is setup with ip_forward == true, it sends additional data in the login packet's ServerAddress field:
+	// hostname\00ip-address\00uuid\00profile-properties-as-json
+	AStringVector Params;
+	if (SplitZeroTerminatedStrings(a_ServerAddress, Params) && (Params.size() == 4))
+	{
+		m_ServerAddress = Params[0];
+	}
+	
 	// Create the comm log file, if so requested:
 	if (g_ShouldLogCommIn || g_ShouldLogCommOut)
 	{

src/Protocol/ProtocolRecognizer.cpp

@@ -27,7 +27,7 @@
 cProtocolRecognizer::cProtocolRecognizer(cClientHandle * a_Client) :
 	super(a_Client),
 	m_Protocol(NULL),
-	m_Buffer(512)
+	m_Buffer(8192)     // We need a larger buffer to support BungeeCord - it sends one huge packet at the start
 {
 }
 

src/StringUtils.cpp

@@ -869,3 +869,31 @@ void SetBEInt(char * a_Mem, Int32 a_Value)
 
 
 
+
+bool SplitZeroTerminatedStrings(const AString & a_Strings, AStringVector & a_Output)
+{
+	a_Output.clear();
+	size_t size = a_Strings.size();
+	size_t start = 0;
+	bool res = false;
+	for (size_t i = 0; i < size; i++)
+	{
+		if (a_Strings[i] == 0)
+		{
+			a_Output.push_back(a_Strings.substr(start, i - start));
+			start = i + 1;
+			res = true;
+		}
+	}
+	if (start < size)
+	{
+		a_Output.push_back(a_Strings.substr(start, size - start));
+		res = true;
+	}
+	
+	return res;
+}
+
+
+
+

src/StringUtils.h

@@ -99,6 +99,11 @@ extern int GetBEInt(const char * a_Mem);
 /// Writes four bytes to the specified memory location so that they interpret as BigEndian int
 extern void SetBEInt(char * a_Mem, Int32 a_Value);
 
+/** Splits a string that has embedded \0 characters, on those characters.
+a_Output is first cleared and then each separate string is pushed back into a_Output.
+Returns true if there are at least two strings in a_Output (there was at least one \0 separator). */
+extern bool SplitZeroTerminatedStrings(const AString & a_Strings, AStringVector & a_Output);
+
 /// Parses any integer type. Checks bounds and returns errors out of band.
 template <class T>
 bool StringToInteger(const AString & a_str, T & a_Num)