Support for silent retrieval of tokens from Token Store in Direct Line Speech scenarios

lib/csharp/microsoft.bot.builder.solutions/microsoft.bot.builder.solutions/Authentication/AuthenticationResponses.cs

@@ -17,5 +17,6 @@ public class AuthenticationResponses : IResponseIdCollection
         public const string AuthProvidersPrompt = "AuthProvidersPrompt";
         public const string ConfiguredAuthProvidersPrompt = "ConfiguredAuthProvidersPrompt";
         public const string ErrorMessageAuthFailure = "ErrorMessageAuthFailure";
+        public const string NoLinkedAccount = "NoLinkedAccount";
     }
 }

lib/csharp/microsoft.bot.builder.solutions/microsoft.bot.builder.solutions/Authentication/AuthenticationResponses.json

@@ -43,5 +43,14 @@
       }
     ],
     "inputHint": "acceptingInput"
+  },
+  "NoLinkedAccount": {
+    "replies": [
+      {
+        "text": "A token could not be retrieved for {authType}, please link your account to your Assistant and try again",
+        "speak": "A token could not be retrieved for {authType}, please link your account to your Assistant and try again"
+      }
+    ],
+    "inputHint": "acceptingInput"
   }
 }

lib/csharp/microsoft.bot.builder.solutions/microsoft.bot.builder.solutions/Authentication/AuthenticationResponses.zh.json

@@ -43,5 +43,14 @@
       }
     ],
     "inputHint": "expectingInput"
+  },
+  "NoLinkedAccount": {
+    "replies": [
+      {
+        "text": "无法为 {authType} 检索令牌, 请将您的帐户链接到您的助手, 然后重试",
+        "speak": "无法为 {authType} 检索令牌, 请将您的帐户链接到您的助手, 然后重试"
+      }
+    ],
+    "inputHint": "acceptingInput"
   }
 }

lib/csharp/microsoft.bot.builder.solutions/microsoft.bot.builder.solutions/Authentication/MultiProviderAuthDialog.cs

@@ -1,11 +1,13 @@
 using System;
 using System.Collections.Generic;
+using System.Collections.Specialized;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Bot.Builder.Dialogs;
 using Microsoft.Bot.Builder.Dialogs.Choices;
 using Microsoft.Bot.Builder.Solutions.Responses;
+using Microsoft.Bot.Connector;
 using Microsoft.Bot.Schema;
 using Microsoft.Rest.Serialization;
 
@@ -105,6 +107,51 @@ private async Task<DialogTurnResult> FirstStepAsync(WaterfallStepContext stepCon
             {
                 return await stepContext.BeginDialogAsync(DialogIds.RemoteAuthPrompt).ConfigureAwait(false);
             }
+            else if (!string.IsNullOrEmpty(stepContext.Context.Activity.ChannelId) && stepContext.Context.Activity.ChannelId == "directlinespeech")
+            {
+                // Speech channel doesn't support OAuthPrompt./OAuthCards so we rely on tokens being set by the Linked Accounts technique
+                // Therefore we don't use OAuthPrompt and instead attempt to directly retrieve the token from the store.
+                if (stepContext.Context.Activity.From == null || string.IsNullOrWhiteSpace(stepContext.Context.Activity.From.Id))
+                {
+                    throw new ArgumentNullException("Missing From or From.Id which is required for token retrieval.");
+                }
+
+                var connectorClient = stepContext.Context.TurnState.Get<IConnectorClient>();
+                if (connectorClient == null)
+                {
+                    throw new InvalidOperationException("An IConnectorClient is required in TurnState for this operation.");
+                }
+
+                var client = new OAuthClient(new Uri(OAuthClientConfig.OAuthEndpoint), connectorClient.Credentials);
+
+                // Attempt to retrieve the token directly, we can't prompt the user for which Token to use so go with the first
+                // Moving forward we expect to have a "default" choice as part of Linked Accounts,.
+                var tokenResponse = await client.UserToken.GetTokenWithHttpMessagesAsync(
+                    stepContext.Context.Activity.From.Id,
+                    _authenticationConnections.First().Name,
+                    stepContext.Context.Activity.ChannelId,
+                    null,
+                    null,
+                    canellationToken).ConfigureAwait(false);
+
+                if (tokenResponse != null && tokenResponse.Body != null && !string.IsNullOrEmpty(tokenResponse.Body.Token))
+                {
+                    var providerTokenResponse = await CreateProviderTokenResponseAsync(stepContext.Context, tokenResponse.Body).ConfigureAwait(false);
+                    return await stepContext.EndDialogAsync(providerTokenResponse).ConfigureAwait(false);
+                }
+                else
+                {
+                    TelemetryClient.TrackEvent("DirectLineSpeechTokenRetrievalFailure");
+
+                    var noLinkedAccountResponse = _responseManager.GetResponse(
+                        AuthenticationResponses.NoLinkedAccount,
+                        new StringDictionary() { { "authType", _authenticationConnections.First().Name } });
+
+                    await stepContext.Context.SendActivityAsync(noLinkedAccountResponse).ConfigureAwait(false);
+
+                    return new DialogTurnResult(DialogTurnStatus.Cancelled);
+                }
+            }
             else
             {
                 if (localAuthConfigured)

lib/csharp/microsoft.bot.builder.solutions/microsoft.bot.builder.solutions/Microsoft.Bot.Builder.Solutions.csproj

@@ -64,6 +64,11 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Compile Update="Authentication\AuthenticationResponses.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>AuthenticationResponses.tt</DependentUpon>
+    </Compile>
     <Compile Update="Resources\CommonStrings.Designer.cs">
       <DesignTime>True</DesignTime>
       <AutoGen>True</AutoGen>
@@ -77,5 +82,17 @@
       <LastGenOutput>CommonStrings.Designer.cs</LastGenOutput>
     </EmbeddedResource>
   </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Authentication\AuthenticationResponses.tt">
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+      <Generator>TextTemplatingFileGenerator</Generator>
+      <LastGenOutput>AuthenticationResponses.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Service Include="{508349b6-6b84-4df5-91f0-309beebad82d}" />
+  </ItemGroup>
 
 </Project>