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diff --git a/source/objects/CalDAV/CalDAV.h b/source/objects/CalDAV/CalDAV.h
index 0413429..148f2d0 100644
--- a/source/objects/CalDAV/CalDAV.h
+++ b/source/objects/CalDAV/CalDAV.h
@@ -1,15 +1,201 @@
+// CalDAV.h - CalDAV Connection Object header.
+//
+// (c) 2016-2017 Xestia Software Development.
+//
+// This file is part of Xestia Calendar.
+//
+// Xestia Calendar is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by the
+// Free Software Foundation, version 3 of the license.
+//
+// Xestia Calendar is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with Xestia Calendar. If not, see <http://www.gnu.org/licenses/>
+
 #ifndef __OBJECTS_CALDAV_CALDAV_H__
 #define __OBJECTS_CALDAV_CALDAV_H__
 
 #include <curl/curl.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
 #include <string>
+#include <iostream>
+#include <vector>
+#include <stdexcept>
+#include <map>
+#include "../../common/colour.h"
+#include "../../common/text.h"
+#include "../../common/uuid.h"
 
 using namespace std;
 
+// CalDAVConnectionData: used for
+// connecting to the server.
+
+enum CalDAVQueryResult {
+	CALDAVQUERYRESULT_UNITTESTFAIL = -1,
+	CALDAVQUERYRESULT_OK,
+	CALDAVQUERYRESULT_NOTRUN,
+	CALDAVQUERYRESULT_SERVERERROR
+};
+
+struct CalDAVCalendarList {
+
+	map<int,string> name;
+	map<int,string> href;
+	map<int,int> order;
+	map<int,string> description;
+	map<int,Colour> calColour;
+	map<int,string> tag;
+	map<int,string> tagURL;
+	
+};
+
+struct CalDAVEntryList {
+	
+	map<int,string> href;
+	map<int,string> data;
+	map<int,string> tag;
+	
+};
+
+struct CalDAVConnectionData{
+	
+	string hostname = "";
+	int port = 8008;
+	string username = "";
+	string password = "";
+	string prefix = "";
+	bool useSSL = true;
+	int timeout = 60;
+	
+};
+
+// CalDAVStatusData: used for
+// getting the current server
+// settings for the CalDAV
+// object.
+
+struct CalDAVStatus{
+
+	string hostname;
+	int port;
+	string username;
+	string prefix;
+	bool useSSL;	
+	int timeout;
+
+};
+
+// CalDAVServerSupport: used for
+// getting what the server supports
+// from the CalDAV specification.
+
+struct CalDAVServerSupport{
+	
+	// Variable name.			   Name in CalDAV header.
+	
+	bool basicSupport = false;		// calendar-access
+	
+};
+
+// CalDAVServerResult: used for
+// getting the result of the
+// request made via the CalDAV
+// object.
+
+struct CalDAVServerResult{
+
+	CalDAVQueryResult result = CALDAVQUERYRESULT_NOTRUN;
+	CURLcode code = CURLE_OK;
+	long httpCode = 0;
+	
+};
+
+// CalDAVSendData: used for
+// sending data to the CaLDAV
+// server.
+
+struct CalDAVSendData{
+	string *readptr;
+	long sizeleft;
+	int seek = 0;
+};
+
 class CalDAV{
 
+	private:
+		string ProcessXMLUserPrincipal();
+		string ProcessXMLCalendarHome();
+		CalDAVCalendarList ProcessXMLCalendarList();
+		CalDAVEntryList ProcessXMLEntryList();
+		CalDAVEntryList ProcessXMLSyncTokenList();
+		string ProcessXMLEntryETag();
+		bool MatchXMLNameTransverse(xmlNodePtr *nodePtr, string nodeName);
+		bool MatchXMLName(xmlNodePtr *nodePtrOriginal, string nodeName);
+		string FetchXMLData(xmlNodePtr *nodePtr);
+		CalDAVServerResult EditCalendarProcess(string *calendarHREF,
+			string *calendarName,
+			Colour *calendarColour,
+			string *calendarDescription,
+			int *calendarOrder);
+	
+		CalDAVConnectionData connectionData;
+		CalDAVServerResult connectionServerResult;
+		CURL *connectionHandle = nullptr;
+		string serverData = "";
+		string serverHeader = "";
 	
+	public:
+		CalDAV();
+		~CalDAV();
+		void SetupConnectionData(CalDAVConnectionData *connData);
+		CalDAVStatus GetConnectionData();
+		CalDAVServerResult Connect();
+		CalDAVServerResult GetServerResult();
+		CalDAVServerSupport GetServerSupport();
+		CalDAVCalendarList GetCalendars();
+		CalDAVEntryList GetEntryList(string *calendarHREF);
+		CalDAVEntryList GetEntryList(string *calendarHREF, string *calendarTag);
+	
+		CalDAVServerResult AddCalendar(string calendarName);
+		CalDAVServerResult AddCalendar(string *calendarName, string *calendarShortName);
+	
+		CalDAVServerResult EditCalendar(string *calendarHREF,
+			string *calendarName,
+			Colour *calendarColour,
+			string *calendarDescription,
+			int *calendarOrder);
+		CalDAVServerResult EditCalendar(string *calendarHREF,
+			Colour *calendarColour);
+		CalDAVServerResult EditCalendar(string *calendarHREF,
+			string *calendarName);
+		CalDAVServerResult EditCalendar(string *calendarHREF,
+			int *calendarOrder);
+		CalDAVServerResult EditCalendarDescription(string *calendarHREF,
+			string *calendarDescription);
+		
+		CalDAVServerResult DeleteCalendar(string *calendarHREF);
+		
+		CalDAVServerResult AddEntry(string *calendarEntryHREF, string *entryData);
+		CalDAVServerResult EditEntry(string *calendarEntryHREF, string *entryData, string *entryETag);
+		CalDAVServerResult DeleteEntry(string *calendarEntryHREF);
+	
+		string GetUserPrincipal();
+		string GetCalendarHome(string userPrincipalURI);
+		
+		CalDAVServerResult GetEntryETag(string *calendarEntryHREF, string *eTagValue);
 	
 };
 
+// Subroutines that are used with the 
+// CalDAVConnectionData struct.
+
+bool CalDAVObjectValidSettings(CalDAVConnectionData *connData);
+string BuildServerAddress(CalDAVConnectionData *connData, string uriAddress);
+
 #endif