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Enable securitymanager #10717
Enable securitymanager #10717
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@@ -26,7 +26,6 @@ | |
import org.elasticsearch.common.collect.Tuple; | ||
import org.elasticsearch.common.inject.CreationException; | ||
import org.elasticsearch.common.inject.spi.Message; | ||
import org.elasticsearch.common.io.FileSystemUtils; | ||
import org.elasticsearch.common.io.PathUtils; | ||
import org.elasticsearch.common.jna.Natives; | ||
import org.elasticsearch.common.logging.ESLogger; | ||
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@@ -40,7 +39,6 @@ | |
import org.elasticsearch.node.NodeBuilder; | ||
import org.elasticsearch.node.internal.InternalSettingsPreparer; | ||
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import java.nio.file.Paths; | ||
import java.util.Locale; | ||
import java.util.Set; | ||
import java.util.concurrent.CountDownLatch; | ||
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@@ -61,6 +59,7 @@ public class Bootstrap { | |
private static Bootstrap bootstrap; | ||
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private void setup(boolean addShutdownHook, Tuple<Settings, Environment> tuple) throws Exception { | ||
setupSecurity(tuple.v1(), tuple.v2()); | ||
if (tuple.v1().getAsBoolean("bootstrap.mlockall", false)) { | ||
Natives.tryMlockall(); | ||
} | ||
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@@ -92,6 +91,16 @@ public boolean handle(int code) { | |
}); | ||
} | ||
} | ||
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private void setupSecurity(Settings settings, Environment environment) throws Exception { | ||
ESLogger logger = Loggers.getLogger(Bootstrap.class); | ||
if (settings.getAsBoolean("security.enabled", true)) { | ||
Security.configure(environment); | ||
logger.info("security enabled"); | ||
} else { | ||
logger.info("security disabled"); | ||
} | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. can we debug log the default? also leaning to have info the "non default" setting, thats what we try to do most times in other components to try and keep the startup logs clean and informative. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This is officially back and forth at this point. I started at info and went to warn based on feedback. Guys get your shit together, im not playing this game. |
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} | ||
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@SuppressForbidden(reason = "Exception#printStackTrace()") | ||
private static void setupLogging(Tuple<Settings, Environment> tuple) { | ||
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@@ -0,0 +1,160 @@ | ||
/* | ||
* Licensed to Elasticsearch under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch licenses this file to you 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. | ||
*/ | ||
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package org.elasticsearch.bootstrap; | ||
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import org.apache.lucene.util.Constants; | ||
import org.elasticsearch.common.io.PathUtils; | ||
import org.elasticsearch.common.logging.Loggers; | ||
import org.elasticsearch.env.Environment; | ||
import org.elasticsearch.env.NodeEnvironment; | ||
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import java.io.BufferedOutputStream; | ||
import java.io.ByteArrayOutputStream; | ||
import java.io.IOException; | ||
import java.io.OutputStream; | ||
import java.io.OutputStreamWriter; | ||
import java.io.Writer; | ||
import java.nio.charset.StandardCharsets; | ||
import java.nio.file.FileStore; | ||
import java.nio.file.Files; | ||
import java.nio.file.Path; | ||
import java.util.HashSet; | ||
import java.util.Set; | ||
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/** | ||
* Initializes securitymanager with necessary permissions. | ||
* <p> | ||
* We use a template file (the one we test with), and add additional | ||
* permissions based on the environment (data paths, etc) | ||
*/ | ||
class Security { | ||
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/** | ||
* Initializes securitymanager for the environment | ||
* Can only happen once! | ||
*/ | ||
static void configure(Environment environment) throws IOException { | ||
Path newConfig = processTemplate(environment.configFile().resolve("security.policy"), environment); | ||
System.setProperty("java.security.policy", newConfig.toString()); | ||
System.setSecurityManager(new SecurityManager()); | ||
try { | ||
Files.delete(newConfig); | ||
} catch (Exception e) { | ||
Loggers.getLogger(Security.class).warn("unable to remove temporary file: " + newConfig, e); | ||
} | ||
} | ||
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// package-private for testing | ||
static Path processTemplate(Path template, Environment environment) throws IOException { | ||
Path processed = Files.createTempFile(null, null); | ||
try (OutputStream output = new BufferedOutputStream(Files.newOutputStream(processed))) { | ||
// copy the template as-is. | ||
Files.copy(template, output); | ||
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// add permissions for all configured paths. | ||
Set<Path> paths = new HashSet<>(); | ||
paths.add(environment.homeFile()); | ||
paths.add(environment.configFile()); | ||
paths.add(environment.logsFile()); | ||
paths.add(environment.pluginsFile()); | ||
paths.add(environment.workFile()); | ||
paths.add(environment.workWithClusterFile()); | ||
for (Path path : environment.dataFiles()) { | ||
paths.add(path); | ||
} | ||
for (Path path : environment.dataWithClusterFiles()) { | ||
paths.add(path); | ||
} | ||
output.write(createPermissions(paths)); | ||
} | ||
return processed; | ||
} | ||
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// package private for testing | ||
static byte[] createPermissions(Set<Path> paths) throws IOException { | ||
ByteArrayOutputStream stream = new ByteArrayOutputStream(); | ||
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// all policy files are UTF-8: | ||
// https://docs.oracle.com/javase/7/docs/technotes/guides/security/PolicyFiles.html | ||
try (Writer writer = new OutputStreamWriter(stream, StandardCharsets.UTF_8)) { | ||
writer.write(System.lineSeparator()); | ||
writer.write("grant {"); | ||
writer.write(System.lineSeparator()); | ||
for (Path path : paths) { | ||
// add each path twice: once for itself, again for files underneath it | ||
addPath(writer, encode(path), "read,readlink,write,delete"); | ||
addRecursivePath(writer, encode(path), "read,readlink,write,delete"); | ||
} | ||
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// on *nix, try to grant read perms to file stores / SSD detection | ||
if (!Constants.WINDOWS) { | ||
Set<String> stores = new HashSet<>(); | ||
for (FileStore store : PathUtils.getDefaultFileSystem().getFileStores()) { | ||
try { | ||
String mount = NodeEnvironment.getMountPoint(store); | ||
// mount point for fstat() calls against it | ||
if (mount.startsWith("/")) { | ||
stores.add(mount); | ||
} | ||
// block device: add it for SSD detection | ||
if (store.name().startsWith("/")) { | ||
stores.add(store.name()); | ||
} | ||
} catch (Throwable t) { | ||
// these are hacks that are not guaranteed | ||
} | ||
} | ||
for (String store : stores) { | ||
addPath(writer, encode(store), "read,readlink"); | ||
} | ||
addRecursivePath(writer, "/sys/block", "read,readlink"); | ||
addRecursivePath(writer, "/sys/devices", "read,readlink"); | ||
addRecursivePath(writer, "/dev", "read,readlink"); | ||
addRecursivePath(writer, "/devices", "read,readlink"); | ||
} | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I want to nuke this entire terrifying 'if' statement and just have the filestore info in Environment (with the other paths) instead of NodeEnvironment. I will open a separate PR for this. |
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writer.write("};"); | ||
writer.write(System.lineSeparator()); | ||
} | ||
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return stream.toByteArray(); | ||
} | ||
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static void addPath(Writer writer, String path, String permissions) throws IOException { | ||
writer.write("permission java.io.FilePermission \"" + path + "\", \"" + permissions + "\";"); | ||
writer.write(System.lineSeparator()); | ||
} | ||
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static void addRecursivePath(Writer writer, String path, String permissions) throws IOException { | ||
writer.write("permission java.io.FilePermission \"" + path + "${/}-\", \"" + permissions + "\";"); | ||
writer.write(System.lineSeparator()); | ||
} | ||
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// Any backslashes in paths must be escaped, because it is the escape character when parsing. | ||
// See "Note Regarding File Path Specifications on Windows Systems". | ||
// https://docs.oracle.com/javase/7/docs/technotes/guides/security/PolicyFiles.html | ||
static String encode(Path path) { | ||
return encode(path.toString()); | ||
} | ||
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static String encode(String path) { | ||
return path.replace("\\", "\\\\"); | ||
} | ||
} |
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Should it be a warning?
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If its disabled lets issue a warning.