public static string GetString(this ExchangeServerVersion version)
{
switch (version)
{
case ExchangeServerVersion.Exchange2007_SP1:
return("2007");
case ExchangeServerVersion.Exchange2010:
case ExchangeServerVersion.Exchange2010_SP1:
case ExchangeServerVersion.Exchange2010_SP2:
return("2010");
case ExchangeServerVersion.Exchange2013:
return("2013");
case ExchangeServerVersion.ExchangeOffice365:
return("Office 365");
default:
return("2010");
}
}
public async Task <AutoDiscoverEngineResult> AutoDiscoverAsync(string email, string username, string password, ExchangeServerVersion version)
{
if (!email.Contains("@"))
{
throw new ArgumentException("Invalid email format");
}
var split = email.Split('@');
if (split.Length != 2)
{
throw new ArgumentException("Invalid email format");
}
string domain = split[1];
var result = await this.SmartGuessAsync(email, username, password, domain, version);
if (result != null)
{
return(result);
}
result = await this.EwsAutoDiscoverAsync(email, username, password, domain, version);
return(result);
}
private async Task <AutoDiscoverEngineResult> SmartGuessAsync(string email, string username, string password, string domain, ExchangeServerVersion version, string endpoint = null)
{
List <string> endpoints;
if (endpoint == null)
{
endpoints = ewsEndpoints;
if (version == ExchangeServerVersion.ExchangeOffice365)
{
endpoints.Insert(0, Office365Endpoint);
}
}
else
{
endpoints = new List <string> {
endpoint
};
}
var result = await this.ExecuteCommand(
"smart guess",
endpoints,
domain,
uri => new GetFolderIdentifiersCommand(new GetFolderIdentifiersParameter(), CreateRequestSettings(email, username, password, uri)));
if (result != null && result.Data != null && !string.IsNullOrWhiteSpace(result.Uri))
{
var uri = TryCreateUri(result.Uri);
if (uri != null)
{
return(new AutoDiscoverEngineResult(uri, null));
}
}
return(null);
}
private async Task <AutoDiscoverEngineResult> EwsAutoDiscoverAsync(string email, string username, string password, string domain, ExchangeServerVersion version)
{
var commandResult = await this.ExecuteCommand(
"ews auto discover",
autoDiscoverEndpoints,
domain,
uri => new AutoDiscoverCommand(new AutoDiscoverParameter(email), CreateRequestSettings(email, username, password, uri)));
if (commandResult != null && commandResult.Data != null)
{
var data = commandResult.Data;
// external
if (!string.IsNullOrWhiteSpace(data.ExternalEwsUrl))
{
LogService.Log("AutoDiscover", "Trying with external ews url: " + data.ExternalEwsUrl);
var result = await this.SmartGuessAsync(email, username, password, domain, version, data.ExternalEwsUrl);
if (result != null)
{
return(result);
}
}
// internal
if (!string.IsNullOrWhiteSpace(data.InternalEwsUrl))
{
LogService.Log("AutoDiscover", "Trying with internal ews url: " + data.InternalEwsUrl);
var result = await this.SmartGuessAsync(email, username, password, domain, version, data.InternalEwsUrl);
if (result != null)
{
return(result);
}
}
// redirect addr
if (!string.IsNullOrWhiteSpace(data.RedirectEmailAddress))
{
LogService.Log("AutoDiscover", "Trying with email redirect: " + data.RedirectEmailAddress);
var result = await this.SmartGuessAsync(data.RedirectEmailAddress, username, password, domain, version);
if (result != null)
{
return(new AutoDiscoverEngineResult(result.ServerUri, data.RedirectEmailAddress));
}
}
}
return(null);
}
