microsoft: added DeviceAuthURL to AzureADEndpoint

The Microsoft identity platform supports the device authorization grant:

https://learn.microsoft.com/en-us/entra/identity-platform/v2-oauth2-device-code

This PR adds the "https://login.microsoftonline.com/{tenant}/oauth2/v2.0/devicecode" DeviceAuthURL to the AzureADEndpoint.

Fixes #700

Change-Id: I8ca571391e0e0f4d383e3f2f07a66b26edcb4679
GitHub-Last-Rev: 2b953c3
GitHub-Pull-Request: #701
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/564315
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Matt Hickford <matt.hickford@gmail.com>
Run-TryBot: Matt Hickford <matt.hickford@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

endpoints/endpoints.go

@@ -68,8 +68,8 @@ var GitLab = oauth2.Endpoint{
 
 // Google is the endpoint for Google.
 var Google = oauth2.Endpoint{
-	AuthURL:  "https://accounts.google.com/o/oauth2/auth",
-	TokenURL: "https://oauth2.googleapis.com/token",
+	AuthURL:       "https://accounts.google.com/o/oauth2/auth",
+	TokenURL:      "https://oauth2.googleapis.com/token",
 	DeviceAuthURL: "https://oauth2.googleapis.com/device/code",
 }
 
@@ -227,8 +227,9 @@ func AzureAD(tenant string) oauth2.Endpoint {
 		tenant = "common"
 	}
 	return oauth2.Endpoint{
-		AuthURL:  "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/authorize",
-		TokenURL: "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/token",
+		AuthURL:       "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/authorize",
+		TokenURL:      "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/token",
+		DeviceAuthURL: "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/devicecode",
 	}
 }
 

microsoft/microsoft.go

@@ -25,7 +25,8 @@ func AzureADEndpoint(tenant string) oauth2.Endpoint {
 		tenant = "common"
 	}
 	return oauth2.Endpoint{
-		AuthURL:  "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/authorize",
-		TokenURL: "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/token",
+		AuthURL:       "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/authorize",
+		TokenURL:      "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/token",
+		DeviceAuthURL: "https://login.microsoftonline.com/" + tenant + "/oauth2/v2.0/devicecode",
 	}
 }