Hack federation resolver so TLS check passes (#7)

As per comment. I don't yet know what the right way of doing this is.

main.go

@@ -22,6 +22,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"strings"
 
 	"time"
 
@@ -70,10 +71,15 @@ func exchangeOIDCToken(
 		return nil, errors.New("No results returned from server name resolution!")
 	}
 
+	// XXX: Remove trailing :443 from the hostname, otherwise the TLS cert will fail to verify
+	// because it will include the port number. This clearly is not the right way of doing this
+	// but right now I don't know what is.
+	hackHostName := spec.ServerName(strings.TrimSuffix(string(resolveResults[0].Host), ":443"))
+
 	client := fclient.NewClient()
 	// validate the openid token by getting the user's ID
 	userinfo, err := client.LookupUserInfo(
-		ctx, resolveResults[0].Host, token.AccessToken,
+		ctx, hackHostName, token.AccessToken,
 	)
 	if err != nil {
 		log.Printf("Failed to look up user info: %v", err)