1 files changed, 65 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/configuration/SubjectMatcher.java b/src/main/java/org/onap/dcae/common/configuration/SubjectMatcher.java
new file mode 100644
index 00000000..9ab42211
--- /dev/null
+++ b/src/main/java/org/onap/dcae/common/configuration/SubjectMatcher.java
@@ -0,0 +1,65 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dcaegen2.collectors.ves
+ * ================================================================================
+ * Copyright (C) 2019 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.dcae.common.configuration;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.security.cert.X509Certificate;
+import java.util.Arrays;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import org.onap.dcae.ApplicationException;
+import org.onap.dcae.ApplicationSettings;
+
+public class SubjectMatcher {
+
+  private final ApplicationSettings properties;
+  private final X509Certificate[] cert;
+
+  public SubjectMatcher(ApplicationSettings properties, X509Certificate[] cert) {
+    this.properties = properties;
+    this.cert = cert;
+  }
+
+  public boolean match(){
+    try {
+      return getLines().anyMatch(element -> Pattern.compile(element).matcher(getSubjectDN(cert)).find());
+    } catch (IOException ex) {
+      throw new ApplicationException("Cannot read file cause: ", ex);
+    }
+  }
+
+  public boolean isCert() {
+    return cert !=null;
+  }
+
+  private Stream<String> getLines() throws IOException {
+    return Files.lines(Paths.get(properties.certSubjectMatcher()));
+  }
+
+  private String getSubjectDN(X509Certificate[] certs) {
+    return Arrays.stream(certs).map(e -> e.getSubjectDN().getName())
+        .map(x -> x.split(",")).flatMap(Arrays::stream)
+        .collect(Collectors.joining(","));
+  }
+}