From 57f221d95525dd1c09ff1bfd3f66e97ac974c7d5 Mon Sep 17 00:00:00 2001
From: Pablo RUTH <contact@pablo-ruth.fr>
Date: Tue, 20 Jun 2023 17:08:46 +0200
Subject: [PATCH] Make OU parsing case insensitive in ldap_group

---
 ldap/resource_ldap_group.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/ldap/resource_ldap_group.go b/ldap/resource_ldap_group.go
index f9b7d35..0c235f1 100644
--- a/ldap/resource_ldap_group.go
+++ b/ldap/resource_ldap_group.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"regexp"
-	"strings"
 
 	"github.com/Ouest-France/goldap"
 	"github.com/go-ldap/ldap/v3"
@@ -139,9 +138,14 @@ func resourceLDAPGroupRead(ctx context.Context, d *schema.ResourceData, m interf
 		return diag.FromErr(err)
 	}
 
-	// Remove the `CN=<group-name>,` from the DN to get the OU
-	ou := strings.ReplaceAll(dn, fmt.Sprintf("CN=%s,", attributes["name"][0]), "")
-	if err := d.Set("ou", ou); err != nil {
+	// Remove the `CN=<group-name>` from the DN to get the OU
+	// using the regex `^cn=.*?,(.*)$` in case insensitive mode
+	reg := regexp.MustCompile(`(?i)^cn=.*?,(.*)$`)
+	match := reg.FindStringSubmatch(dn)
+	if len(match) != 2 {
+		return diag.Errorf("Failed parsing OU from DN (must match regex `^cn=.*?,(.*)$`): %s", dn)
+	}
+	if err := d.Set("ou", match[1]); err != nil {
 		return diag.FromErr(err)
 	}