Merge pull request #32: Support AAD in MSA

Support AAD in MSA

Author: jeschu1

src/shared/Microsoft.AzureRepos.Tests/AzureDevOpsApiTests.cs

@@ -18,6 +18,7 @@ public class AzureDevOpsApiTests
     {
         private const string ExpectedLocationServicePath = "_apis/ServiceDefinitions/LocationService2/951917AC-A960-4999-8464-E3F0AA25B381?api-version=1.0";
         private const string ExpectedIdentityServicePath = "_apis/token/sessiontokens?api-version=1.0&tokentype=compact";
+        private const string CommonAuthority = "https://login.microsoftonline.com/common";
 
         [Fact]
         public async Task AzureDevOpsRestApi_GetAuthorityAsync_NullUri_ThrowsException()
@@ -47,7 +48,7 @@ public async Task AzureDevOpsRestApi_GetAuthorityAsync_NoHeaders_ReturnsCommonAu
             var context = new TestCommandContext();
             var uri = new Uri("https://example.com");
 
-            const string expectedAuthority = "https://login.microsoftonline.com/common";
+            const string expectedAuthority = CommonAuthority;
 
             var httpResponse = new HttpResponseMessage(HttpStatusCode.Unauthorized);
 
@@ -166,13 +167,13 @@ public async Task AzureDevOpsRestApi_GetAuthorityAsync_VssResourceTenantMultiple
         }
 
         [Fact]
-        public async Task AzureDevOpsRestApi_GetAuthorityAsync_VssResourceTenantMsa_ReturnsMsaAuthority()
+        public async Task AzureDevOpsRestApi_GetAuthorityAsync_VssResourceTenantMsa_ReturnsCommonAuthority()
         {
             var context = new TestCommandContext();
             var uri = new Uri("https://example.com");
             var msaTenantId = Guid.Empty;
 
-            const string expectedAuthority = "https://login.microsoftonline.com/live.com";
+            const string expectedAuthority = CommonAuthority;
 
             var httpResponse = new HttpResponseMessage(HttpStatusCode.Unauthorized)
             {

src/shared/Microsoft.AzureRepos/AzureDevOpsRestApi.cs

@@ -41,7 +41,6 @@ public async Task<string> GetAuthorityAsync(Uri organizationUri)
 
             const string authorityBase = "https://login.microsoftonline.com/";
             const string commonAuthority = authorityBase + "common";
-            const string msaAuthority = authorityBase + "live.com";
 
             _context.Trace.WriteLine($"HTTP: HEAD {organizationUri}");
             using (HttpResponseMessage response = await HttpClient.HeadAsync(organizationUri))
@@ -80,7 +79,7 @@ public async Task<string> GetAuthorityAsync(Uri organizationUri)
                         if (tenantIds.Length == 1 && Guid.TryParse(tenantIds[0], out guid) && guid == Guid.Empty)
                         {
                             _context.Trace.WriteLine($"Found {AzureDevOpsConstants.VssResourceTenantHeader} header with MSA tenant ID (empty GUID).");
-                            return msaAuthority;
+                            return commonAuthority;
                         }
                     }
                 }