I am trying to connect to ICloud calendars and parse events I can do that if I use the public calendar url and it works fine. However doing that I cannot update the event for that I need CalDav connection.
I am struggling as most of the examples here return 404 Not Found.
Can anyone please guide me "ICloud Caldav connection to get Calendars " in C# a sample or working example.
Keeping in mind the for the above I will only have Username and Password for the account so with that provided I have to load list of Calendar's.
Found this article very helpful in achieving the task:
Sample code:
static string calendarURI = "https://caldav.icloud.com/";
static string username = "[email protected]";
static string password = "xxxx-xxxx-xxxx-xxxx";
//static string content = "<?xml version=\"1.0\" encoding=\"utf-8\"?><propfind xlmns=\"DAV:\"><allprop/></propfind>";
static string content = "<propfind xmlns='DAV:'><prop><current-user-principal/></prop></propfind>";
public async static void GetCalendars()
{
try
{
ResponseStream = ExectueMethod(username, password, calendarURI, "PROPFIND", null, content, "application/x-www-form-urlencoded","0");
XmlDocument = new XmlDocument();
XmlDocument.Load(ResponseStream);
string xmlInner = XmlDocument.InnerXml;
XmlDocument innerXmlDocument = new XmlDocument();
innerXmlDocument.LoadXml(xmlInner);
XmlNode statusCheck = innerXmlDocument.GetElementsByTagName("status")[0];
if (statusCheck != null)
{
string status = statusCheck.InnerText.Trim();
if (status == "HTTP/1.1 200 OK")
{
XmlNode tag = innerXmlDocument.GetElementsByTagName("current-user-principal")[0];
if (tag != null)
{
XmlNode taghref = tag.ChildNodes[0];
if (taghref != null)
{
string href = taghref.InnerText.Trim();
string baseUrl = "https://caldav.icloud.com" + href;
Console.WriteLine("BASSE URL :" + baseUrl);
content = "<propfind xmlns='DAV:' xmlns:cd='urn:ietf:params:xml:ns:caldav'><prop><cd:calendar-home-set/></prop></propfind>";
ResponseStream = ExectueMethod(username, password, baseUrl, "PROPFIND", null, content, "application/x-www-form-urlencoded","0");
XmlDocument = new XmlDocument();
XmlDocument.Load(ResponseStream);
xmlInner = XmlDocument.InnerXml;
innerXmlDocument = new XmlDocument();
innerXmlDocument.LoadXml(xmlInner);
tag = innerXmlDocument.GetElementsByTagName("calendar-home-set")[0];
if (tag != null)
{
taghref = tag.ChildNodes[0];
if (taghref != null)
{
string calURL = taghref.InnerText.Trim();
Console.WriteLine("CALENDER URL :" + calURL);
content = "<propfind xmlns='DAV:'><prop><displayname/><getctag />calendar-data</prop></propfind>";
ResponseStream = ExectueMethod(username, password, calURL, "PROPFIND", null, content, "application/x-www-form-urlencoded","1");
XmlDocument = new XmlDocument();
XmlDocument.Load(ResponseStream);
xmlInner = XmlDocument.InnerXml;
innerXmlDocument = new XmlDocument();
innerXmlDocument.LoadXml(xmlInner);
int xx = 0;
foreach (XmlNode row in innerXmlDocument.GetElementsByTagName("response"))
{
if (xx > 0)
{
string calhrefUrlfinal = row.InnerXml.Remove(row.InnerXml.IndexOf("</href>"));
calhrefUrlfinal = calhrefUrlfinal.Replace("<href xmlns=\"DAV:\">", "");
string Calname = row.InnerXml.Remove(row.InnerXml.IndexOf("</displayname>"));
Calname = Calname.Remove(0, Calname.IndexOf("<displayname>")).Replace("<displayname>", "").Trim();
string statusx = row.InnerXml.Remove(row.InnerXml.IndexOf("</status>"));
statusx = statusx.Remove(0, statusx.IndexOf("<status>")).Replace("<status>", "").Trim();
if (statusx == "HTTP/1.1 200 OK")
{
Console.Write("THIS IS VALID CAL!");
// ADD THIS CAL TO LIST TO SHOW!
content = "<propfind xmlns='DAV:'><prop><calendar-data/><getctag /></prop></propfind>";
ResponseStream = ExectueMethod(username, password, calhrefUrlfinal, "PROPFIND", null, content, "application/x-www-form-urlencoded", "1");
XmlDocument = new XmlDocument();
XmlDocument.Load(ResponseStream);
xmlInner = XmlDocument.InnerXml;
XmlDocument icsSoc = new XmlDocument();
icsSoc.LoadXml(xmlInner);
foreach (XmlNode ics in icsSoc.GetElementsByTagName("href"))
{
string t = ics.InnerText.Trim();
if (t.Contains(".ics"))
{
DownloadICS(t, Calname + ".ics");
break;
}
}
}
}
xx = xx + 1;
}
}
}
}
}
}
}
}
catch (Exception ex)
{ }
}
private static void DownloadICS(string pathUri, string fileNames)
{
WebClient request = new WebClient();
request.Credentials = new NetworkCredential(username, password);
Byte[] data = request.DownloadData(pathUri);
var str = System.Text.Encoding.Default.GetString(data);
string path = "icloudCalenders\\" + fileNames.Substring(fileNames.LastIndexOf(" / ") + 1);
FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
fs.Write(data, 0, data.Length);
fs.Close();
}
private static Stream ExectueMethod(string username, string password, string caldevURI, string methodName, WebHeaderCollection headers, string content, string contentType,string depth)
{
HttpWebRequest httpGetRequest = (HttpWebRequest)WebRequest.Create(caldevURI);
httpGetRequest.Credentials = new NetworkCredential(username, password);
httpGetRequest.PreAuthenticate = true;
httpGetRequest.Method = methodName;
httpGetRequest.Headers.Add("Depth", depth);
httpGetRequest.Headers.Add("Authorization", username);
//httpGetRequest.UserAgent = "DAVKit/3.0.6 (661); CalendarStore/3.0.8 (860); iCal/3.0.8 (1287); Mac OS X/10.5.8 (9L31a)";
httpGetRequest.UserAgent = "curl/7.37.0";
if (!string.IsNullOrWhiteSpace(contentType))
{
httpGetRequest.ContentType = contentType;
}
using (var streamWriter = new StreamWriter(httpGetRequest.GetRequestStream()))
{
string data = content;
streamWriter.Write(data);
}
//Stream requestStream = httpGetRequest.GetRequestStream();
//requestStream.Write(optionsArray, 0, optionsArray.Length);
//requestStream.Close();
HttpWebResponse httpGetResponse = (HttpWebResponse)httpGetRequest.GetResponse();
Stream responseStream = httpGetResponse.GetResponseStream();
return responseStream;
}