2 files changed, 7 insertions, 0 deletions
diff --git a/Bugzilla/Auth/Login/Env.pm b/Bugzilla/Auth/Login/Env.pm
index f93034ef3..76227f18b 100644
--- a/Bugzilla/Auth/Login/Env.pm
+++ b/Bugzilla/Auth/Login/Env.pm
@@ -32,6 +32,7 @@ use constant can_login  => 0;
 use constant requires_persistence  => 0;
 use constant requires_verification => 0;
 use constant is_automatic => 1;
+use constant extern_id_used => 1;
 
 sub get_login_info {
     my ($self) = @_;
diff --git a/Bugzilla/Auth/Login/Stack.pm b/Bugzilla/Auth/Login/Stack.pm
index f490d243b..0f3661954 100644
--- a/Bugzilla/Auth/Login/Stack.pm
+++ b/Bugzilla/Auth/Login/Stack.pm
@@ -28,6 +28,7 @@ use fields qw(
 );
 use Hash::Util qw(lock_keys);
 use Bugzilla::Hook;
+use List::MoreUtils qw(any);
 
 sub new {
     my $class = shift;
@@ -97,4 +98,9 @@ sub user_can_create_account {
     return 0;
 }
 
+sub extern_id_used {
+    my ($self) = @_;
+    return any { $_->extern_id_used } @{ $self->{_stack} };
+}
+
 1;