1 files changed, 53 insertions, 0 deletions
diff --git a/certServiceClient/src/main/java/org/onap/oom/certservice/client/configuration/validation/csr/CommonNameValidator.java b/certServiceClient/src/main/java/org/onap/oom/certservice/client/configuration/validation/csr/CommonNameValidator.java
new file mode 100644
index 00000000..a5244466
--- /dev/null
+++ b/certServiceClient/src/main/java/org/onap/oom/certservice/client/configuration/validation/csr/CommonNameValidator.java
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START=======================================================
+ * oom-certservice-client
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.oom.certservice.client.configuration.validation.csr;
+
+import static org.onap.oom.certservice.client.configuration.validation.csr.CsrEnvsValueValidators.isSpecialCharPresent;
+
+import java.util.function.Predicate;
+import java.util.regex.Pattern;
+
+public final class CommonNameValidator implements Predicate<String> {
+
+    private static final String PORT_POSTFIX_REGEX = ":[0-9]{1,5}";
+    private static final String IPV4_ADDRESS_REGEX = "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}";
+    private static final String HTTP_HTTPS_SCHEME_REGEX = "[h][t][t][p][:][/][/]|[h][t][t][p][s][:][/][/]";
+
+    public boolean test(String commonName) {
+        return !isSpecialCharPresent(commonName)
+            && !isHttpProtocolsPresent(commonName)
+            && !isIpAddressPresent(commonName)
+            && !isPortNumberPresent(commonName);
+    }
+
+    private boolean isPortNumberPresent(String stringToCheck) {
+        return Pattern.compile(PORT_POSTFIX_REGEX).matcher(stringToCheck).find();
+    }
+
+    private boolean isIpAddressPresent(String stringToCheck) {
+        return Pattern.compile(IPV4_ADDRESS_REGEX).matcher(stringToCheck).find();
+    }
+
+    private boolean isHttpProtocolsPresent(String stringToCheck) {
+        return Pattern.compile(HTTP_HTTPS_SCHEME_REGEX).matcher(stringToCheck).find();
+    }
+
+}