From 9b15cd609c0e8291e1eb0a21566af111252b7dfd Mon Sep 17 00:00:00 2001
From: Sergey Matvienko <smatvienko@thingsboard.io>
Date: Thu, 31 Aug 2023 14:17:23 +0200
Subject: [PATCH] StringUtils: contains0x00 implemented to prevent
 org.postgresql.util.PSQLException: ERROR: invalid byte sequence for encoding
 "UTF8": 0x00

---
 .../server/common/data/StringUtils.java       |  7 ++++
 .../server/common/data/StringUtilsTest.java   | 40 +++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 common/data/src/test/java/org/thingsboard/server/common/data/StringUtilsTest.java

diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/StringUtils.java b/common/data/src/main/java/org/thingsboard/server/common/data/StringUtils.java
index a7671f4327..7360f9b8ab 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/StringUtils.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/StringUtils.java
@@ -181,6 +181,13 @@ public class StringUtils {
         return org.apache.commons.lang3.StringUtils.contains(seq, searchSeq);
     }
 
+    /**
+     * Use this to prevent org.postgresql.util.PSQLException: ERROR: invalid byte sequence for encoding "UTF8": 0x00
+     **/
+    public static boolean contains0x00(final String s) {
+        return s != null && s.contains("\u0000");
+    }
+
     public static String randomNumeric(int length) {
         return RandomStringUtils.randomNumeric(length);
     }
diff --git a/common/data/src/test/java/org/thingsboard/server/common/data/StringUtilsTest.java b/common/data/src/test/java/org/thingsboard/server/common/data/StringUtilsTest.java
new file mode 100644
index 0000000000..4cf21baa99
--- /dev/null
+++ b/common/data/src/test/java/org/thingsboard/server/common/data/StringUtilsTest.java
@@ -0,0 +1,40 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class StringUtilsTest {
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "\000", "\u0000", " \000", " \000 ", "\000 ", "\000\000", "\000 \000",
+            "世\000界", "F0929906\000\000\000\000\000\000\000\000\000",
+    })
+    void testContains0x00_thenTrue(String sample) {
+        assertThat(StringUtils.contains0x00(sample)).isTrue();
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {"", "  ", "abc", "世界", "\001", "\uD83D\uDC0C"})
+    void testContains0x00_thenFalse(String sample) {
+        assertThat(StringUtils.contains0x00(sample)).isFalse();
+    }
+
+}