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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using Grpc.Core.Internal;
using Grpc.Core.Utils;
namespace Grpc.Core
{
/// <summary>
/// Authentication context for a call.
/// AuthContext is the only reliable source of truth when it comes to authenticating calls.
/// Using any other call/context properties for authentication purposes is wrong and inherently unsafe.
/// Note: experimental API that can change or be removed without any prior notice.
/// </summary>
public class AuthContext
{
string peerIdentityPropertyName;
Dictionary<string, List<AuthProperty>> properties;
/// <summary>
/// Initializes a new instance of the <see cref="T:Grpc.Core.AuthContext"/> class.
/// </summary>
/// <param name="peerIdentityPropertyName">Peer identity property name.</param>
/// <param name="properties">Multimap of auth properties by name.</param>
internal AuthContext(string peerIdentityPropertyName, Dictionary<string, List<AuthProperty>> properties)
{
this.peerIdentityPropertyName = peerIdentityPropertyName;
this.properties = GrpcPreconditions.CheckNotNull(properties);
}
/// <summary>
/// Returns <c>true</c> if the peer is authenticated.
/// </summary>
public bool IsPeerAuthenticated
{
get
{
return peerIdentityPropertyName != null;
}
}
/// <summary>
/// Gets the name of the property that indicates the peer identity. Returns <c>null</c>
/// if the peer is not authenticated.
/// </summary>
public string PeerIdentityPropertyName
{
get
{
return peerIdentityPropertyName;
}
}
/// <summary>
/// Gets properties that represent the peer identity (there can be more than one). Returns an empty collection
/// if the peer is not authenticated.
/// </summary>
public IEnumerable<AuthProperty> PeerIdentity
{
get
{
if (peerIdentityPropertyName == null)
{
return Enumerable.Empty<AuthProperty>();
}
return properties[peerIdentityPropertyName];
}
}
/// <summary>
/// Gets the auth properties of this context.
/// </summary>
public IEnumerable<AuthProperty> Properties
{
get
{
return properties.Values.SelectMany(v => v);
}
}
/// <summary>
/// Returns the auth properties with given name (there can be more than one).
/// If no properties of given name exist, an empty collection will be returned.
/// </summary>
public IEnumerable<AuthProperty> FindPropertiesByName(string propertyName)
{
List<AuthProperty> result;
if (!properties.TryGetValue(propertyName, out result))
{
return Enumerable.Empty<AuthProperty>();
}
return result;
}
}
}
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