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Install a security manager on startup #21716

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Merged
merged 1 commit into from
Nov 22, 2016
Merged

Install a security manager on startup #21716

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9 changes: 9 additions & 0 deletions core/src/main/java/org/elasticsearch/bootstrap/Elasticsearch.java
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@

import java.io.IOException;
import java.nio.file.Path;
import java.security.Permission;
import java.util.Arrays;
import java.util.Map;

Expand Down Expand Up @@ -69,6 +70,14 @@ class Elasticsearch extends SettingCommand {
* Main entry point for starting elasticsearch
*/
public static void main(final String[] args) throws Exception {
// we want the JVM to think there is a security manager installed so that if internal policy decisions that would be based on the
// presence of a security manager or lack thereof act as if there is a security manager present (e.g., DNS cache policy)
System.setSecurityManager(new SecurityManager() {
@Override
public void checkPermission(Permission perm) {
// grant all permissions so that we can later set the security manager to the one that we want
}
});
final Elasticsearch elasticsearch = new Elasticsearch();
int status = main(args, elasticsearch, Terminal.DEFAULT);
if (status != ExitCodes.OK) {
Expand Down