core: add groups to users

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

outpost/pkg/ldap/utils.go

@@ -1,7 +1,10 @@
 package ldap
 
 import (
+	"fmt"
+
 	"github.com/nmcclain/ldap"
+	"goauthentik.io/outpost/pkg/models"
 )
 
 func AKAttrsToLDAP(attrs interface{}) []*ldap.EntryAttribute {
@@ -18,3 +21,15 @@ func AKAttrsToLDAP(attrs interface{}) []*ldap.EntryAttribute {
 	}
 	return attrList
 }
+
+func (pi *ProviderInstance) GroupsForUser(user *models.User) []string {
+	groups := make([]string, len(user.Groups))
+	for i, group := range user.Groups {
+		groups[i] = pi.GetGroupDN(group)
+	}
+	return groups
+}
+
+func (pi *ProviderInstance) GetGroupDN(group *models.Group) string {
+	return fmt.Sprintf("cn=%s,%s", *group.Name, pi.GroupDN)
+}