| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112 | #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.#endregionusing System;using System.Collections.Generic;using System.Linq;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>        public 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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