public static async Task <string> GetSharePointAccessToken(this IBotContext context, string resource)
{
SharePointSettings sharepointSettings = SharePointSettings.GetFromAppSettings();
AuthenticationResult authenticationResult;
if (context.UserData.TryGetValue(AuthenticationConstants.AuthResultKey, out authenticationResult))
{
try
{
// here needs to come an implementation that automatically renews the refresh token we get from SharePoint
}
catch (Exception ex)
{
Trace.TraceError("Failed to renew token: " + ex.Message);
await context.PostAsync("Your credentials expired and could not be renewed automatically!");
await context.Logout(sharepointSettings);
return(null);
}
return(authenticationResult.AccessToken);
}
return(null);
}
public static async Task Logout(this IBotContext context, SharePointSettings sharePointSettings)
{
context.UserData.RemoveValue(AuthenticationConstants.AuthResultKey + '_' + SharePointAuthDialog.DialogId);
context.UserData.RemoveValue(AuthenticationConstants.MagicNumberKey + '_' + SharePointAuthDialog.DialogId);
context.UserData.RemoveValue(AuthenticationConstants.MagicNumberValidated + '_' + SharePointAuthDialog.DialogId);
string signoutURl = "https://login.microsoftonline.com/common/oauth2/logout?post_logout_redirect_uri=" + System.Net.WebUtility.UrlEncode(sharePointSettings.RedirectUrl);
await context.PostAsync($"In order to finish the sign out, please click at this [link]({signoutURl}).");
}
internal static Task <string> GetAuthUrlAsync(ResumptionCookie resumptionCookie, string siteRelativeUrl, string authScope)
{
// https://mstackbv.sharepoint.com/sites/processes/?client_id=f485755d-217f-4d4f-a3ba-395af4d73d3e&scope=AllSites.Read&response_type=code&redirect_uri=https%3A%2F%2Flocalhost%3A3978%2Fapi%2Foauth
SharePointSettings settings = SharePointSettings.GetFromAppSettings();
string authUri = $"{settings.TenantUrl}{siteRelativeUrl}/_layouts/15/OAuthAuthorize.aspx";
var state = AuthUtilities.EncodeResumptionCookie(resumptionCookie);
NameValueCollection queryParams = new NameValueCollection();
queryParams.Add("client_id", settings.ClientId);
queryParams.Add("scope", authScope);
queryParams.Add("response_type", "code");
queryParams.Add("redirect_uri", settings.RedirectUrl);
queryParams.Add("state", state);
authUri += AuthUtilities.ToQueryString(queryParams);
return(Task.FromResult(authUri));
}
//internal static async Task<AuthenticationResult> GetRefreshToken(IDialogContext context, string refreshToken)
//{
// SharePointSettings settings = SharePointSettings.GetFromAppSettings();
// string spPrinciple = "00000003-0000-0ff1-ce00-000000000000";
// string spAuthUrl = "https://accounts.accesscontrol.windows.net/" + settings.TenantId + "/tokens/OAuth/2";
// KeyValuePair<string, string>[] body = new KeyValuePair<string, string>[]
// {
// new KeyValuePair<string, string>("grant_type", "refresh_token"),
// new KeyValuePair<string, string>("client_id", $"{settings.ClientId}@{settings.TenantId}"),
// new KeyValuePair<string, string>("resource", $"{spPrinciple}/{settings.TenantUrl}@{settings.TenantId}".Replace("https://", "")),
// new KeyValuePair<string, string>("client_secret", settings.ClientSecret),
// new KeyValuePair<string, string>("refresh_token", refreshToken),
// new KeyValuePair<string, string>("redirect_uri", settings.RedirectUrl)
// };
// var content = new FormUrlEncodedContent(body);
// var contentLength = content.ToString().Length;
// AuthenticationResult result = new AuthenticationResult();
// HttpClient client = new HttpClient();
// using (HttpResponseMessage response = await client.PostAsync(spAuthUrl, content))
// {
// if (response.Content != null)
// {
// string responseString = await response.Content.ReadAsStringAsync();
// JObject data = JObject.Parse(responseString);
// result.AccessToken = data.Value<string>("access_token");
// result.ExpiresOnUtcTicks = data.Value<long>("expires_on");
// result.Resource = data.Value<string>("resource");
// TODO: need to extend the result with more fields when available
// }
// }
// return result;
//}
public static async Task <AuthenticationResult> GetTokenByAuthCodeAsync(string code)
{
SharePointSettings settings = SharePointSettings.GetFromAppSettings();
string spPrinciple = "00000003-0000-0ff1-ce00-000000000000";
string spAuthUrl = "https://accounts.accesscontrol.windows.net/" + settings.TenantId + "/tokens/OAuth/2";
KeyValuePair <string, string>[] body = new KeyValuePair <string, string>[]
{
new KeyValuePair <string, string>("grant_type", "client_credentials"),
new KeyValuePair <string, string>("client_id", $"{settings.ClientId}@{settings.TenantId}"),
new KeyValuePair <string, string>("resource", $"{spPrinciple}/{settings.TenantUrl}@{settings.TenantId}".Replace("https://", "")),
new KeyValuePair <string, string>("client_secret", settings.ClientSecret),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("redirect_uri", settings.RedirectUrl)
};
var content = new FormUrlEncodedContent(body);
var contentLength = content.ToString().Length;
AuthenticationResult result = new AuthenticationResult();
HttpClient client = new HttpClient();
using (HttpResponseMessage response = await client.PostAsync(spAuthUrl, content))
{
if (response.Content != null)
{
string responseString = await response.Content.ReadAsStringAsync();
JObject data = JObject.Parse(responseString);
result.AccessToken = data.Value <string>("access_token");
result.RefreshToken = data.Value <string>("refresh_token");
result.ExpiresOnUtcTicks = data.Value <long>("expires_on");
// TODO: need to extend the result with more fields when available
}
}
return(result);
}
