From 2dc005ee50bb835a3c6130d3c1b757cf6ad63061 Mon Sep 17 00:00:00 2001
From: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Date: Fri, 27 Mar 2026 10:28:55 +0000
Subject: [PATCH] Fix referential integrity plugin silently bypassing check-references for modify operations

---
 opendj-server-legacy/src/test/java/org/opends/server/plugins/ReferentialIntegrityPluginTestCase.java |   23 +++++++++++++++++++++++
 opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java         |   11 +++++------
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java b/opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java
index c5b74a0..a1995b6 100644
--- a/opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java
+++ b/opendj-server-legacy/src/main/java/org/opends/server/plugins/ReferentialIntegrityPlugin.java
@@ -991,10 +991,9 @@
     }
 
     final List<Modification> mods = modifyOperation.getModifications();
-    final Entry entry = modifyOperation.getModifiedEntry();
 
     /* Make sure the entry belongs to one of the configured naming contexts. */
-    DN entryDN = entry.getName();
+    DN entryDN = modifyOperation.getEntryDN();
     DN entryBaseDN = getEntryBaseDN(entryDN);
     if (entryBaseDN == null)
     {
@@ -1009,14 +1008,14 @@
       if (modType != ModificationType.ADD
           && modType != ModificationType.REPLACE)
       {
-        break;
+        continue;
       }
 
-      Attribute modifiedAttribute = entry.getAttribute(mod.getAttribute().getAttributeDescription());
-      if (modifiedAttribute != null)
+      Attribute modifiedAttribute = mod.getAttribute();
+      if (modifiedAttribute != null && !modifiedAttribute.isEmpty())
       {
         PluginResult.PreOperation result =
-        isIntegrityMaintained(modifiedAttribute, entryDN, entryBaseDN);
+            isIntegrityMaintained(modifiedAttribute, entryDN, entryBaseDN);
         if (result.getResultCode() != ResultCode.SUCCESS)
         {
           return result;
diff --git a/opendj-server-legacy/src/test/java/org/opends/server/plugins/ReferentialIntegrityPluginTestCase.java b/opendj-server-legacy/src/test/java/org/opends/server/plugins/ReferentialIntegrityPluginTestCase.java
index 531e27a..2a6a312 100644
--- a/opendj-server-legacy/src/test/java/org/opends/server/plugins/ReferentialIntegrityPluginTestCase.java
+++ b/opendj-server-legacy/src/test/java/org/opends/server/plugins/ReferentialIntegrityPluginTestCase.java
@@ -1829,4 +1829,27 @@
       "member", "uid=user.1,ou=people,ou=dept,o=test");
     assertEquals(modOperation.getResultCode(), ResultCode.SUCCESS);
   }
+
+  @Test
+  public void testEnforceIntegrityModifyGroupAddMissingUniqueMember() throws Exception
+  {
+    replaceAttrEntry(configDN, "ds-cfg-enabled", "false");
+    replaceAttrEntry(configDN, dsConfigPluginType,
+                               "postoperationdelete",
+                               "postoperationmodifydn",
+                               "subordinatemodifydn",
+                               "subordinatedelete",
+                               "preoperationadd",
+                               "preoperationmodify");
+    addAttrEntry(configDN, dsConfigBaseDN, "dc=example,dc=com");
+    replaceAttrEntry(configDN, dsConfigEnforceIntegrity, "true");
+    replaceAttrEntry(configDN, dsConfigAttrType, "uniquemember");
+    addAttrEntry(configDN, dsConfigAttrFiltMapping,
+                           "uniquemember:(objectclass=person)");
+    replaceAttrEntry(configDN, "ds-cfg-enabled", "true");
+
+    ModifyOperation modOperation = addAttrEntry(DN.valueOf(ugroup),
+      "uniquemember", "uid=user.100,ou=people,ou=dept,dc=example,dc=com");
+    assertEquals(modOperation.getResultCode(), ResultCode.CONSTRAINT_VIOLATION);
+  }
 }

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