private async Task <bool> AutoLinkAndSignInExternalAccount(ExternalLoginInfo loginInfo, ExternalSignInAutoLinkOptions autoLinkOptions)
{
if (autoLinkOptions == null)
{
return(false);
}
if (autoLinkOptions.ShouldAutoLinkExternalAccount(UmbracoContext, loginInfo) == false)
{
return(true);
}
//we are allowing auto-linking/creating of local accounts
if (loginInfo.Email.IsNullOrWhiteSpace())
{
ViewData.SetExternalSignInProviderErrors(
new BackOfficeExternalLoginProviderErrors(
loginInfo.Login.LoginProvider,
new[] { "The requested provider (" + loginInfo.Login.LoginProvider + ") has not provided an email address, the account cannot be linked." }));
}
else
{
//Now we need to perform the auto-link, so first we need to lookup/create a user with the email address
var autoLinkUser = UserManager.FindByEmail(loginInfo.Email);
if (autoLinkUser != null)
{
try
{
//call the callback if one is assigned
autoLinkOptions.OnAutoLinking?.Invoke(autoLinkUser, loginInfo);
}
catch (Exception ex)
{
var msg = "Could not link login provider " + loginInfo.Login.LoginProvider + ".";
Logger.Error <BackOfficeController>(ex, msg);
ViewData.SetExternalSignInProviderErrors(
new BackOfficeExternalLoginProviderErrors(
loginInfo.Login.LoginProvider,
new[] { msg + " " + ex.Message }));
return(true);
}
await LinkUser(autoLinkUser, loginInfo);
}
else
{
if (loginInfo.Email.IsNullOrWhiteSpace())
{
throw new InvalidOperationException("The Email value cannot be null");
}
if (loginInfo.ExternalIdentity.Name.IsNullOrWhiteSpace())
{
throw new InvalidOperationException("The Name value cannot be null");
}
var groups = Services.UserService.GetUserGroupsByAlias(autoLinkOptions.GetDefaultUserGroups(UmbracoContext, loginInfo));
autoLinkUser = BackOfficeIdentityUser.CreateNew(
loginInfo.Email,
loginInfo.Email,
autoLinkOptions.GetDefaultCulture(UmbracoContext, loginInfo));
autoLinkUser.Name = loginInfo.ExternalIdentity.Name;
foreach (var userGroup in groups)
{
autoLinkUser.AddRole(userGroup.Alias);
}
//call the callback if one is assigned
try
{
autoLinkOptions.OnAutoLinking?.Invoke(autoLinkUser, loginInfo);
}
catch (Exception ex)
{
var msg = "Could not link login provider " + loginInfo.Login.LoginProvider + ".";
Logger.Error <BackOfficeController>(ex, msg);
ViewData.SetExternalSignInProviderErrors(
new BackOfficeExternalLoginProviderErrors(
loginInfo.Login.LoginProvider,
new[] { msg + " " + ex.Message }));
return(true);
}
var userCreationResult = await UserManager.CreateAsync(autoLinkUser);
if (userCreationResult.Succeeded == false)
{
ViewData.SetExternalSignInProviderErrors(
new BackOfficeExternalLoginProviderErrors(
loginInfo.Login.LoginProvider,
userCreationResult.Errors));
}
else
{
await LinkUser(autoLinkUser, loginInfo);
}
}
}
return(true);
}
private async Task<bool> AutoLinkAndSignInExternalAccount(ExternalLoginInfo loginInfo, ExternalSignInAutoLinkOptions autoLinkOptions)
{
if (autoLinkOptions == null)
return false;
if (autoLinkOptions.ShouldAutoLinkExternalAccount(UmbracoContext, loginInfo) == false)
return true;
//we are allowing auto-linking/creating of local accounts
if (loginInfo.Email.IsNullOrWhiteSpace())
{
ViewData.SetExternalSignInError(new[] { "The requested provider (" + loginInfo.Login.LoginProvider + ") has not provided an email address, the account cannot be linked." });
}
else
{
//Now we need to perform the auto-link, so first we need to lookup/create a user with the email address
var foundByEmail = Services.UserService.GetByEmail(loginInfo.Email);
if (foundByEmail != null)
{
ViewData.SetExternalSignInError(new[] { "A user with this email address already exists locally. You will need to login locally to Umbraco and link this external provider: " + loginInfo.Login.LoginProvider });
}
else
{
if (loginInfo.Email.IsNullOrWhiteSpace()) throw new InvalidOperationException("The Email value cannot be null");
if (loginInfo.ExternalIdentity.Name.IsNullOrWhiteSpace()) throw new InvalidOperationException("The Name value cannot be null");
var groups = Services.UserService.GetUserGroupsByAlias(autoLinkOptions.GetDefaultUserGroups(UmbracoContext, loginInfo));
var autoLinkUser = BackOfficeIdentityUser.CreateNew(
loginInfo.Email,
loginInfo.Email,
autoLinkOptions.GetDefaultCulture(UmbracoContext, loginInfo));
autoLinkUser.Name = loginInfo.ExternalIdentity.Name;
foreach (var userGroup in groups)
{
autoLinkUser.AddRole(userGroup.Alias);
}
//call the callback if one is assigned
if (autoLinkOptions.OnAutoLinking != null)
{
autoLinkOptions.OnAutoLinking(autoLinkUser, loginInfo);
}
var userCreationResult = await UserManager.CreateAsync(autoLinkUser);
if (userCreationResult.Succeeded == false)
{
ViewData.SetExternalSignInError(userCreationResult.Errors);
}
else
{
var linkResult = await UserManager.AddLoginAsync(autoLinkUser.Id, loginInfo.Login);
if (linkResult.Succeeded == false)
{
ViewData.SetExternalSignInError(linkResult.Errors);
//If this fails, we should really delete the user since it will be in an inconsistent state!
var deleteResult = await UserManager.DeleteAsync(autoLinkUser);
if (deleteResult.Succeeded == false)
{
//DOH! ... this isn't good, combine all errors to be shown
ViewData.SetExternalSignInError(linkResult.Errors.Concat(deleteResult.Errors));
}
}
else
{
//sign in
await SignInManager.SignInAsync(autoLinkUser, isPersistent: false, rememberBrowser: false);
}
}
}
}
return true;
}
