private AuthorizationContextDomainDetails GetDomainDetails(SecurityIdentifier sid)
{
if (!domainCache.TryGetValue(sid.AccountDomainSid, out AuthorizationContextDomainDetails value))
{
string domainDnsName = this.discoveryServices.GetDomainNameDns(sid);
value = new AuthorizationContextDomainDetails(sid.AccountDomainSid, domainDnsName, this.discoveryServices)
{
Mapping = this.GetMapping(domainDnsName)
};
this.domainCache.TryAdd(sid.AccountDomainSid, value);
this.logger.LogTrace($"Built AuthorizationContextDomainDetails for domain {domainDnsName}. IsInCurrentForest:{value.IsInCurrentForest} IsRemoteOneWayTrust:{value.IsRemoteOneWayTrust}");
}
return(value);
}
protected bool Equals(AuthorizationContextDomainDetails other)
{
return(Equals(SecurityIdentifier, other.SecurityIdentifier));
}
public AuthorizationContext GetContext(IUser user, SecurityIdentifier resourceDomain, AuthorizationContextDomainDetails domainDetails)
{
AuthorizationServer server = domainDetails.GetServer(false);
Exception lastException = null;
HashSet <string> attemptedServers = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
while (attemptedServers.Add(server.Name))
{
try
{
this.logger.LogTrace("Attempting to create AuthorizationContext against server {server} in domain {domain} for user {user} requesting access to resource in domain {domain} ", server.Name, domainDetails.DomainDnsName, user.MsDsPrincipalName, resourceDomain);
return(new AuthorizationContext(user.Sid, server.Name, domainDetails.Mapping.DoNotRequireS4U ? AuthzInitFlags.Default : AuthzInitFlags.RequireS4ULogon));
}
catch (AuthorizationContextException ex) when(ex.InnerException is Win32Exception we && we.HResult == -2147467259) //RPC_NOT_AVAILABLE
{
lastException = ex;
this.logger.LogWarning(EventIDs.AuthZContextServerCantConnect, ex, "Unable to connect to server {server}", server.Name);
server = domainDetails.GetServer(true);
}
catch (Exception ex)
{
lastException = ex;
this.logger.LogError(EventIDs.AuthZContextCreateError, ex, "Unable to create AuthorizationContext against server {server} in domain {domain}", server.Name, domainDetails.DomainDnsName);
}
}
throw lastException ?? new Exception("Unable to create authorization context");
}