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Posted to commits@solr.apache.org by ja...@apache.org on 2023/12/13 22:08:04 UTC

(solr) branch main updated: SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets

This is an automated email from the ASF dual-hosted git repository.

janhoy pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/solr.git


The following commit(s) were added to refs/heads/main by this push:
     new 15534754f49 SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
15534754f49 is described below

commit 15534754f492079e52288dd11abaf1c4261b3ea4
Author: Jan Høydahl <ja...@apache.org>
AuthorDate: Wed Dec 13 22:49:23 2023 +0100

    SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
---
 solr/CHANGES.txt                                   |   2 +
 solr/core/build.gradle                             |   2 +
 .../org/apache/solr/cli/ConfigSetUploadTool.java   |   2 +
 .../org/apache/solr/cloud/ZkConfigSetService.java  |  21 ++-
 .../solr/core/FileSystemConfigSetService.java      |  28 +++-
 .../org/apache/solr/core/backup/BackupManager.java |  23 ++-
 .../handler/configsets/UploadConfigSetFileAPI.java |   8 +-
 .../org/apache/solr/util/FileTypeMagicUtil.java    | 166 +++++++++++++++++++++
 solr/core/src/resources/magic/executables          |  74 +++++++++
 solr/core/src/test-files/magic/HelloWorld.java.txt |   5 +
 .../test-files/magic/HelloWorldJavaClass.class.bin | Bin 0 -> 426 bytes
 solr/core/src/test-files/magic/README.md           |  29 ++++
 solr/core/src/test-files/magic/hello.tar.bin       | Bin 0 -> 4096 bytes
 solr/core/src/test-files/magic/plain.txt           |   1 +
 solr/core/src/test-files/magic/shell.sh.txt        |   2 +
 .../org/apache/solr/cloud/TestConfigSetsAPI.java   | 141 +++++++++++------
 .../apache/solr/util/FileTypeMagicUtilTest.java    |  54 +++++++
 solr/licenses/simplemagic-1.17.jar.sha1            |   1 +
 solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt     |  15 ++
 solr/licenses/simplemagic-NOTICE.txt               |   0
 .../solr/common/cloud/ZkMaintenanceUtils.java      |   2 +
 versions.lock                                      |   1 +
 versions.props                                     |   1 +
 23 files changed, 522 insertions(+), 56 deletions(-)

diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 40da8c435ac..2fd94304a24 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -169,6 +169,8 @@ Other Changes
 * SOLR-17091: dev tools script cloud.sh became broken after changes in 9.3 added a new -slim.tgz file it was not expecting
   cloud.sh has been updated to ignore the -slim.tgz version of the tarball.
 
+* SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets (janhoy, Houston Putman)
+
 ==================  9.4.0 ==================
 New Features
 ---------------------
diff --git a/solr/core/build.gradle b/solr/core/build.gradle
index 61ecd1713af..ed2c8a370ae 100644
--- a/solr/core/build.gradle
+++ b/solr/core/build.gradle
@@ -159,6 +159,8 @@ dependencies {
 
   compileOnly 'com.github.stephenc.jcip:jcip-annotations'
 
+  implementation 'com.j256.simplemagic:simplemagic'
+
   // -- Test Dependencies
 
   testRuntimeOnly 'org.slf4j:jcl-over-slf4j'
diff --git a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
index 5fd4a538bd7..6576742a195 100644
--- a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
+++ b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
@@ -27,6 +27,7 @@ import org.apache.solr.client.solrj.impl.SolrZkClientTimeout;
 import org.apache.solr.common.cloud.SolrZkClient;
 import org.apache.solr.common.cloud.ZkMaintenanceUtils;
 import org.apache.solr.core.ConfigSetService;
+import org.apache.solr.util.FileTypeMagicUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -101,6 +102,7 @@ public class ConfigSetUploadTool extends ToolBase {
               + cli.getOptionValue("confname")
               + " to ZooKeeper at "
               + zkHost);
+      FileTypeMagicUtil.assertConfigSetFolderLegal(confPath);
       ZkMaintenanceUtils.uploadToZK(
           zkClient,
           confPath,
diff --git a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
index f02404d636d..9abde098e1c 100644
--- a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
+++ b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
@@ -22,6 +22,7 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import org.apache.solr.client.solrj.cloud.SolrCloudManager;
@@ -39,6 +40,7 @@ import org.apache.solr.core.CoreContainer;
 import org.apache.solr.core.CoreDescriptor;
 import org.apache.solr.core.SolrConfig;
 import org.apache.solr.core.SolrResourceLoader;
+import org.apache.solr.util.FileTypeMagicUtil;
 import org.apache.zookeeper.CreateMode;
 import org.apache.zookeeper.KeeperException;
 import org.apache.zookeeper.data.Stat;
@@ -199,6 +201,15 @@ public class ZkConfigSetService extends ConfigSetService {
     try {
       if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
         log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
+      } else if (FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
+        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
+        throw new SolrException(
+            SolrException.ErrorCode.BAD_REQUEST,
+            String.format(
+                Locale.ROOT,
+                "Not uploading file %s to config, as it matched the MAGIC signature of a forbidden mime type %s",
+                fileName,
+                mimeType));
       } else {
         // if overwriteOnExists is true then zkClient#makePath failOnExists is set to false
         zkClient.makePath(filePath, data, CreateMode.PERSISTENT, null, !overwriteOnExists, true);
@@ -340,7 +351,15 @@ public class ZkConfigSetService extends ConfigSetService {
     } else {
       log.debug("Copying zk node {} to {}", fromZkFilePath, toZkFilePath);
       byte[] data = zkClient.getData(fromZkFilePath, null, null, true);
-      zkClient.makePath(toZkFilePath, data, true);
+      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
+        zkClient.makePath(toZkFilePath, data, true);
+      } else {
+        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
+        log.warn(
+            "Skipping copy of file {} in ZK, as it matched the MAGIC signature of a forbidden mime type {}",
+            fromZkFilePath,
+            mimeType);
+      }
     }
   }
 
diff --git a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
index 1f1a42b15e1..4b041252211 100644
--- a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
+++ b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
@@ -37,6 +37,7 @@ import java.util.stream.Stream;
 import org.apache.solr.common.SolrException;
 import org.apache.solr.common.cloud.ZkMaintenanceUtils;
 import org.apache.solr.common.util.Utils;
+import org.apache.solr.util.FileTypeMagicUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -150,9 +151,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
     if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
       log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
     } else {
-      Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
-      if (!Files.exists(filePath) || overwriteOnExists) {
-        Files.write(filePath, data);
+      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
+        Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
+        if (!Files.exists(filePath) || overwriteOnExists) {
+          Files.write(filePath, data);
+        }
+      } else {
+        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
+        log.warn(
+            "Not including uploading file {}, as it matched the MAGIC signature of a forbidden mime type {}",
+            fileName,
+            mimeType);
       }
     }
   }
@@ -205,8 +214,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
                     "Not including uploading file to config, as it is a forbidden type: {}",
                     file.getFileName());
               } else {
-                Files.copy(
-                    file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
+                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(Files.newInputStream(file))) {
+                  Files.copy(
+                      file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
+                } else {
+                  String mimeType =
+                      FileTypeMagicUtil.INSTANCE.guessMimeType(Files.newInputStream(file));
+                  log.warn(
+                      "Not copying file {}, as it matched the MAGIC signature of a forbidden mime type {}",
+                      file.getFileName(),
+                      mimeType);
+                }
               }
               return FileVisitResult.CONTINUE;
             }
diff --git a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
index be6a1a83c2f..8ff78b27e08 100644
--- a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
+++ b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
@@ -40,6 +40,7 @@ import org.apache.solr.common.cloud.ZkStateReader;
 import org.apache.solr.common.util.Utils;
 import org.apache.solr.core.ConfigSetService;
 import org.apache.solr.core.backup.repository.BackupRepository;
+import org.apache.solr.util.FileTypeMagicUtil;
 import org.apache.zookeeper.CreateMode;
 import org.apache.zookeeper.KeeperException;
 import org.slf4j.Logger;
@@ -349,8 +350,16 @@ public class BackupManager {
           if (data == null) {
             data = new byte[0];
           }
-          try (OutputStream os = repository.createOutput(uri)) {
-            os.write(data);
+          if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
+            try (OutputStream os = repository.createOutput(uri)) {
+              os.write(data);
+            }
+          } else {
+            String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
+            log.warn(
+                "Not including zookeeper file {} in backup, as it matched the MAGIC signature of a forbidden mime type {}",
+                filePath,
+                mimeType);
           }
         }
       } else {
@@ -379,7 +388,15 @@ public class BackupManager {
                 // probably ok since the config file should be small.
                 byte[] arr = new byte[(int) is.length()];
                 is.readBytes(arr, 0, (int) is.length());
-                configSetService.uploadFileToConfig(configName, filePath, arr, false);
+                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(arr)) {
+                  configSetService.uploadFileToConfig(configName, filePath, arr, false);
+                } else {
+                  String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(arr);
+                  log.warn(
+                      "Not including zookeeper file {} in restore, as it matched the MAGIC signature of a forbidden mime type {}",
+                      filePath,
+                      mimeType);
+                }
               }
             }
             break;
diff --git a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
index 98889aff563..2380a79a92b 100644
--- a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
+++ b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
@@ -27,6 +27,7 @@ import org.apache.solr.common.params.ConfigSetParams;
 import org.apache.solr.core.CoreContainer;
 import org.apache.solr.request.SolrQueryRequest;
 import org.apache.solr.response.SolrQueryResponse;
+import org.apache.solr.util.FileTypeMagicUtil;
 
 /**
  * V2 API for adding or updating a single file within a configset.
@@ -67,11 +68,13 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
     if (fixedSingleFilePath.charAt(0) == '/') {
       fixedSingleFilePath = fixedSingleFilePath.substring(1);
     }
+    byte[] data = inputStream.readAllBytes();
     if (fixedSingleFilePath.isEmpty()) {
       throw new SolrException(
           SolrException.ErrorCode.BAD_REQUEST,
           "The file path provided for upload, '" + singleFilePath + "', is not valid.");
-    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)) {
+    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)
+        || FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
       throw new SolrException(
           SolrException.ErrorCode.BAD_REQUEST,
           "The file type provided for upload, '"
@@ -87,8 +90,7 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
       // For creating the baseNode, the cleanup parameter is only allowed to be true when
       // singleFilePath is not passed.
       createBaseNode(configSetService, overwritesExisting, requestIsTrusted, configSetName);
-      configSetService.uploadFileToConfig(
-          configSetName, fixedSingleFilePath, inputStream.readAllBytes(), allowOverwrite);
+      configSetService.uploadFileToConfig(configSetName, fixedSingleFilePath, data, allowOverwrite);
     }
   }
 }
diff --git a/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
new file mode 100644
index 00000000000..cfb6c9fa0af
--- /dev/null
+++ b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
@@ -0,0 +1,166 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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.
+ */
+
+package org.apache.solr.util;
+
+import com.j256.simplemagic.ContentInfo;
+import com.j256.simplemagic.ContentInfoUtil;
+import com.j256.simplemagic.ContentType;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+import org.apache.solr.common.SolrException;
+
+/** Utility class to guess the mime type of file based on its magic number. */
+public class FileTypeMagicUtil implements ContentInfoUtil.ErrorCallBack {
+  private final ContentInfoUtil util;
+  private static final Set<String> SKIP_FOLDERS = new HashSet<>(Arrays.asList(".", ".."));
+
+  public static FileTypeMagicUtil INSTANCE = new FileTypeMagicUtil();
+
+  FileTypeMagicUtil() {
+    try {
+      util = new ContentInfoUtil("/magic/executables", this);
+    } catch (IOException e) {
+      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error parsing magic file", e);
+    }
+  }
+
+  /**
+   * Asserts that an entire configset folder is legal to upload.
+   *
+   * @param confPath the path to the folder
+   * @throws SolrException if an illegal file is found in the folder structure
+   */
+  public static void assertConfigSetFolderLegal(Path confPath) throws IOException {
+    Files.walkFileTree(
+        confPath,
+        new SimpleFileVisitor<Path>() {
+          @Override
+          public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
+              throws IOException {
+            // Read first 100 bytes of the file to determine the mime type
+            try (InputStream fileStream = Files.newInputStream(file)) {
+              byte[] bytes = new byte[100];
+              fileStream.read(bytes);
+              if (FileTypeMagicUtil.isFileForbiddenInConfigset(bytes)) {
+                throw new SolrException(
+                    SolrException.ErrorCode.BAD_REQUEST,
+                    String.format(
+                        Locale.ROOT,
+                        "Not uploading file %s to configset, as it matched the MAGIC signature of a forbidden mime type %s",
+                        file,
+                        FileTypeMagicUtil.INSTANCE.guessMimeType(bytes)));
+              }
+              return FileVisitResult.CONTINUE;
+            }
+          }
+
+          @Override
+          public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
+              throws IOException {
+            if (SKIP_FOLDERS.contains(dir.getFileName().toString()))
+              return FileVisitResult.SKIP_SUBTREE;
+
+            return FileVisitResult.CONTINUE;
+          }
+        });
+  }
+
+  /**
+   * Guess the mime type of file based on its magic number.
+   *
+   * @param stream input stream of the file
+   * @return string with content-type or "application/octet-stream" if unknown
+   */
+  public String guessMimeType(InputStream stream) {
+    try {
+      ContentInfo info = util.findMatch(stream);
+      if (info == null) {
+        return ContentType.OTHER.getMimeType();
+      }
+      return info.getContentType().getMimeType();
+    } catch (IOException e) {
+      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
+    }
+  }
+
+  /**
+   * Guess the mime type of file bytes based on its magic number.
+   *
+   * @param bytes the first bytes at start of the file
+   * @return string with content-type or "application/octet-stream" if unknown
+   */
+  public String guessMimeType(byte[] bytes) {
+    return guessMimeType(new ByteArrayInputStream(bytes));
+  }
+
+  @Override
+  public void error(String line, String details, Exception e) {
+    throw new SolrException(
+        SolrException.ErrorCode.SERVER_ERROR,
+        String.format(Locale.ROOT, "%s: %s", line, details),
+        e);
+  }
+
+  /**
+   * Determine forbidden file type based on magic bytes matching of the file itself. Forbidden types
+   * are:
+   *
+   * <ul>
+   *   <li><code>application/x-java-applet</code>: java class file
+   *   <li><code>application/zip</code>: jar or zip archives
+   *   <li><code>application/x-tar</code>: tar archives
+   *   <li><code>text/x-shellscript</code>: shell or bash script
+   * </ul>
+   *
+   * @param fileStream stream from the file content
+   * @return true if file is among the forbidden mime-types
+   */
+  public static boolean isFileForbiddenInConfigset(InputStream fileStream) {
+    return forbiddenTypes.contains(FileTypeMagicUtil.INSTANCE.guessMimeType(fileStream));
+  }
+
+  /**
+   * Determine forbidden file type based on magic bytes matching of the first bytes of the file.
+   *
+   * @param bytes byte array of the file content
+   * @return true if file is among the forbidden mime-types
+   */
+  public static boolean isFileForbiddenInConfigset(byte[] bytes) {
+    if (bytes == null || bytes.length == 0)
+      return false; // A ZK znode may be a folder with no content
+    return isFileForbiddenInConfigset(new ByteArrayInputStream(bytes));
+  }
+
+  private static final Set<String> forbiddenTypes =
+      new HashSet<>(
+          Arrays.asList(
+              System.getProperty(
+                      "solr.configset.upload.mimetypes.forbidden",
+                      "application/x-java-applet,application/zip,application/x-tar,text/x-shellscript")
+                  .split(",")));
+}
diff --git a/solr/core/src/resources/magic/executables b/solr/core/src/resources/magic/executables
new file mode 100644
index 00000000000..04094eaf797
--- /dev/null
+++ b/solr/core/src/resources/magic/executables
@@ -0,0 +1,74 @@
+#  Licensed to the Apache Software Foundation (ASF) under one or more
+#  contributor license agreements.  See the NOTICE file distributed with
+#  this work for additional information regarding copyright ownership.
+#  The ASF 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.
+
+# POSIX tar archives
+# URL: https://en.wikipedia.org/wiki/Tar_(computing)
+# Reference: https://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5&manpath=FreeBSD+8-current
+# header mainly padded with nul bytes
+500	quad		0
+!:strength /2
+# filename or extended attribute printable strings in range space null til umlaut ue
+>0	ubeshort	>0x1F00
+>>0	ubeshort	<0xFCFD
+# last 4 header bytes often null but tar\0 in gtarfail2.tar gtarfail.tar-bad
+# at https://sourceforge.net/projects/s-tar/files/testscripts/
+>>>508	ubelong&0x8B9E8DFF	0
+# nul, space or ascii digit 0-7 at start of mode
+>>>>100	ubyte&0xC8	=0
+>>>>>101 ubyte&0xC8	=0
+# nul, space at end of check sum
+>>>>>>155 ubyte&0xDF	=0
+# space or ascii digit 0 at start of check sum
+>>>>>>>148	ubyte&0xEF	=0x20
+# check for specific 1st member name that indicates other mime type and file name suffix
+>>>>>>>>0	string		TpmEmuTpms/permall
+!:mime	application/x-tar
+!:ext	tar
+# other stuff in padding
+# some implementations add new fields to the blank area at the end of the header record
+# created for example by DOS TAR 3.20g 1994 Tim V.Shapore with -j option
+>>257	ulong		!0		tar archive (old)
+!:mime	application/x-tar
+!:ext	tar
+# magic in newer, GNU, posix variants
+>257	string		=ustar
+# 2 last char of magic and UStar version because string expression does not work
+# 2 space characters followed by a null for GNU variant
+>>261	ubelong		=0x72202000	POSIX tar archive (GNU)
+!:mime	application/x-gtar
+!:ext	tar/gtar
+
+
+# Zip archives (Greg Roelofs, c/o zip-bugs@wkuvx1.wku.edu)
+0	string		PK\005\006	Zip archive data (empty)
+0	string		PK\003\004  Zip archive data
+!:strength +1
+!:mime application/zip
+!:ext zip/cbz
+
+
+# JAVA
+0	belong		0xcafebabe
+>4	ubelong		>30		compiled Java class data,
+!:mime	application/x-java-applet
+#!:mime	application/java-byte-code
+!:ext	class
+
+
+# SHELL scripts
+#0	string/w	:			shell archive or script for antique kernel text
+0	regex	\^#!\\s?(/bin/|/usr/)		POSIX shell script text executable
+!:mime	text/x-shellscript
+!:ext	sh/bash
\ No newline at end of file
diff --git a/solr/core/src/test-files/magic/HelloWorld.java.txt b/solr/core/src/test-files/magic/HelloWorld.java.txt
new file mode 100644
index 00000000000..ca9518d2afa
--- /dev/null
+++ b/solr/core/src/test-files/magic/HelloWorld.java.txt
@@ -0,0 +1,5 @@
+class HelloWorld {
+  public static void main(String[] args) {
+    System.out.println("Hellow world");
+  }
+}
\ No newline at end of file
diff --git a/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin
new file mode 100644
index 00000000000..e15d0a6c5b9
Binary files /dev/null and b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin differ
diff --git a/solr/core/src/test-files/magic/README.md b/solr/core/src/test-files/magic/README.md
new file mode 100644
index 00000000000..6e499a2f711
--- /dev/null
+++ b/solr/core/src/test-files/magic/README.md
@@ -0,0 +1,29 @@
+<!--
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF 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.
+ -->
+
+The two binary files were created by the following commands:
+
+```bash
+echo "Hello" > hello.txt && \
+  tar -cvf hello.tar.bin hello.txt && \
+  rm hello.txt
+
+cp HelloWorld.java.txt HelloWorld.java && \
+  javac HelloWorld.java && \
+  mv HelloWorld.class HelloWorldJavaClass.class.bin && \
+  rm HelloWorld.java
+```
\ No newline at end of file
diff --git a/solr/core/src/test-files/magic/hello.tar.bin b/solr/core/src/test-files/magic/hello.tar.bin
new file mode 100644
index 00000000000..68ca23c362a
Binary files /dev/null and b/solr/core/src/test-files/magic/hello.tar.bin differ
diff --git a/solr/core/src/test-files/magic/plain.txt b/solr/core/src/test-files/magic/plain.txt
new file mode 100644
index 00000000000..70c379b63ff
--- /dev/null
+++ b/solr/core/src/test-files/magic/plain.txt
@@ -0,0 +1 @@
+Hello world
\ No newline at end of file
diff --git a/solr/core/src/test-files/magic/shell.sh.txt b/solr/core/src/test-files/magic/shell.sh.txt
new file mode 100644
index 00000000000..9ea411e111d
--- /dev/null
+++ b/solr/core/src/test-files/magic/shell.sh.txt
@@ -0,0 +1,2 @@
+#! /usr/bin/env bash
+echo Hello
\ No newline at end of file
diff --git a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
index 1da60d85ff9..f7c9431c296 100644
--- a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
+++ b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
@@ -45,6 +45,7 @@ import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Properties;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
@@ -592,14 +593,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
       assertEquals(
           "Can't overwrite an existing configset unless the overwrite parameter is set",
           400,
-          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false));
+          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false, false));
       unIgnoreException("The configuration regulartestOverwrite-1 already exists in zookeeper");
       assertEquals(
           "Expecting version to remain equal",
           solrconfigZkVersion,
           getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml"));
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
+          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -638,13 +639,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
         zkClient.makePath(f, true);
       }
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
+          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
       for (String f : extraFiles) {
         assertTrue(
             "Expecting file " + f + " to exist in ConfigSet but it's gone",
             zkClient.exists(f, true));
       }
-      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
+      assertEquals(
+          0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
       for (String f : extraFiles) {
         assertFalse(
             "Expecting file " + f + " to be deleted from ConfigSet but it wasn't",
@@ -675,7 +677,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
             .withConnTimeOut(45000, TimeUnit.MILLISECONDS)
             .build()) {
       String configPath = "/configs/" + configsetName + configsetSuffix;
-      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true));
+      assertEquals(
+          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true, false));
       for (String fileEnding : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
         String f = configPath + "/test." + fileEnding;
         assertFalse(
@@ -710,7 +713,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
           getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml");
       // Was untrusted, overwrite with untrusted
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
+          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -721,7 +724,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
 
       // Was untrusted, overwrite with trusted but no cleanup
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
+          0,
+          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -747,7 +751,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
 
       // Was untrusted, overwrite with trusted with cleanup
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
+          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -761,7 +765,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
       assertEquals(
           "Can't upload a trusted configset with an untrusted request",
           400,
-          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
+          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
       assertEquals(
           "Expecting version to remain equal",
           solrconfigZkVersion,
@@ -773,7 +777,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
       assertEquals(
           "Can't upload a trusted configset with an untrusted request",
           400,
-          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
+          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
       assertEquals(
           "Expecting version to remain equal",
           solrconfigZkVersion,
@@ -783,7 +787,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
 
       // Was trusted, overwrite with trusted no cleanup
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
+          0,
+          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -794,7 +799,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
 
       // Was trusted, overwrite with trusted with cleanup
       assertEquals(
-          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
+          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
       assertTrue(
           "Expecting version bump",
           solrconfigZkVersion
@@ -1457,6 +1462,13 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
             .get("id"));
   }
 
+  @Test
+  public void testUploadWithForbiddenContent() throws Exception {
+    // Uploads a config set containing a script, a class file and jar file, will return 400 error
+    long res = uploadConfigSet("forbidden", "suffix", "foo", true, false, true, false, true);
+    assertEquals(400, res);
+  }
+
   private static String getSecurityJson() {
     return "{\n"
         + "  'authentication':{\n"
@@ -1511,7 +1523,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
       String configSetName, String suffix, String username, SolrZkClient zkClient, boolean v2)
       throws IOException {
     assertFalse(getConfigSetService().checkConfigExists(configSetName + suffix));
-    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false);
+    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false, false);
   }
 
   private long uploadConfigSet(
@@ -1521,21 +1533,25 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
       boolean overwrite,
       boolean cleanup,
       boolean v2,
-      boolean forbiddenTypes)
+      boolean forbiddenTypes,
+      boolean forbiddenContent)
       throws IOException {
 
+    File zipFile;
+    if (forbiddenTypes) {
+      log.info("Uploading configset with forbidden file endings");
+      zipFile =
+          createTempZipFileWithForbiddenTypes(
+              "solr/configsets/upload/" + configSetName + "/solrconfig.xml");
+    } else if (forbiddenContent) {
+      log.info("Uploading configset with forbidden file content");
+      zipFile = createTempZipFileWithForbiddenContent("magic");
+    } else {
+      zipFile = createTempZipFile("solr/configsets/upload/" + configSetName);
+    }
+
     // Read zipped sample config
-    return uploadGivenConfigSet(
-        forbiddenTypes
-            ? createTempZipFileWithForbiddenTypes(
-                "solr/configsets/upload/" + configSetName + "/solrconfig.xml")
-            : createTempZipFile("solr/configsets/upload/" + configSetName),
-        configSetName,
-        suffix,
-        username,
-        overwrite,
-        cleanup,
-        v2);
+    return uploadGivenConfigSet(zipFile, configSetName, suffix, username, overwrite, cleanup, v2);
   }
 
   private long uploadBadConfigSet(String configSetName, String suffix, String username, boolean v2)
@@ -1702,31 +1718,68 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
     }
   }
 
-  private static void zipWithForbiddenEndings(File file, File zipfile) throws IOException {
-    OutputStream out = new FileOutputStream(zipfile);
-    ZipOutputStream zout = new ZipOutputStream(out);
+  /** Create a zip file (in the temp directory) containing files with forbidden content */
+  private File createTempZipFileWithForbiddenContent(String resourcePath) {
     try {
-      for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
-        zout.putNextEntry(new ZipEntry("test." + fileType));
+      final File zipFile = createTempFile("configset", "zip").toFile();
+      final File directory = SolrTestCaseJ4.getFile(resourcePath);
+      if (log.isInfoEnabled()) {
+        log.info("Directory: {}", directory.getAbsolutePath());
+      }
+      zipWithForbiddenContent(directory, zipFile);
+      if (log.isInfoEnabled()) {
+        log.info("Zipfile: {}", zipFile.getAbsolutePath());
+      }
+      return zipFile;
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
 
-        InputStream in = new FileInputStream(file);
-        try {
-          byte[] buffer = new byte[1024];
-          while (true) {
-            int readCount = in.read(buffer);
-            if (readCount < 0) {
-              break;
+  private static void zipWithForbiddenContent(File directory, File zipfile) throws IOException {
+    OutputStream out = Files.newOutputStream(zipfile.toPath());
+    assertTrue(directory.isDirectory());
+    try (ZipOutputStream zout = new ZipOutputStream(out)) {
+      // Copy in all files from the directory
+      for (File file : Objects.requireNonNull(directory.listFiles())) {
+        zout.putNextEntry(new ZipEntry(file.getName()));
+        zout.write(Files.readAllBytes(file.toPath()));
+        zout.closeEntry();
+      }
+    }
+  }
+
+  private static void zipWithForbiddenEndings(File fileOrDirectory, File zipfile)
+      throws IOException {
+    OutputStream out = new FileOutputStream(zipfile);
+    try (ZipOutputStream zout = new ZipOutputStream(out)) {
+      if (fileOrDirectory.isFile()) {
+        // Create entries with given file, one for each forbidden endding
+        for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
+          zout.putNextEntry(new ZipEntry("test." + fileType));
+
+          try (InputStream in = new FileInputStream(fileOrDirectory)) {
+            byte[] buffer = new byte[1024];
+            while (true) {
+              int readCount = in.read(buffer);
+              if (readCount < 0) {
+                break;
+              }
+              zout.write(buffer, 0, readCount);
             }
-            zout.write(buffer, 0, readCount);
           }
-        } finally {
-          in.close();
-        }
 
-        zout.closeEntry();
+          zout.closeEntry();
+        }
+      }
+      if (fileOrDirectory.isDirectory()) {
+        // Copy in all files from the directory
+        for (File file : Objects.requireNonNull(fileOrDirectory.listFiles())) {
+          zout.putNextEntry(new ZipEntry(file.getName()));
+          zout.write(Files.readAllBytes(file.toPath()));
+          zout.closeEntry();
+        }
       }
-    } finally {
-      zout.close();
     }
   }
 
diff --git a/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
new file mode 100644
index 00000000000..b8e9a35a3d9
--- /dev/null
+++ b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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.
+ */
+
+package org.apache.solr.util;
+
+import org.apache.solr.SolrTestCaseJ4;
+
+public class FileTypeMagicUtilTest extends SolrTestCaseJ4 {
+  public void testGuessMimeType() {
+    assertEquals(
+        "application/x-java-applet",
+        FileTypeMagicUtil.INSTANCE.guessMimeType(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
+    assertEquals(
+        "application/zip",
+        FileTypeMagicUtil.INSTANCE.guessMimeType(
+            FileTypeMagicUtil.class.getResourceAsStream(
+                "/runtimecode/containerplugin.v.1.jar.bin")));
+    assertEquals(
+        "application/x-tar",
+        FileTypeMagicUtil.INSTANCE.guessMimeType(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/hello.tar.bin")));
+    assertEquals(
+        "text/x-shellscript",
+        FileTypeMagicUtil.INSTANCE.guessMimeType(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
+  }
+
+  public void testIsFileForbiddenInConfigset() {
+    assertTrue(
+        FileTypeMagicUtil.isFileForbiddenInConfigset(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
+    assertTrue(
+        FileTypeMagicUtil.isFileForbiddenInConfigset(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
+    assertFalse(
+        FileTypeMagicUtil.isFileForbiddenInConfigset(
+            FileTypeMagicUtil.class.getResourceAsStream("/magic/plain.txt")));
+  }
+}
diff --git a/solr/licenses/simplemagic-1.17.jar.sha1 b/solr/licenses/simplemagic-1.17.jar.sha1
new file mode 100644
index 00000000000..cf101094cc8
--- /dev/null
+++ b/solr/licenses/simplemagic-1.17.jar.sha1
@@ -0,0 +1 @@
+b6e2d1e47d7172e57fa858a2e3940c09a590e61e
diff --git a/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
new file mode 100644
index 00000000000..9228230f933
--- /dev/null
+++ b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
@@ -0,0 +1,15 @@
+ISC License (https://opensource.org/licenses/ISC)
+
+Copyright 2021, Gray Watson
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
\ No newline at end of file
diff --git a/solr/licenses/simplemagic-NOTICE.txt b/solr/licenses/simplemagic-NOTICE.txt
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
index d571339880c..e40294a6683 100644
--- a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
+++ b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
@@ -348,6 +348,7 @@ public class ZkMaintenanceUtils {
                   USE_FORBIDDEN_FILE_TYPES);
               return FileVisitResult.CONTINUE;
             }
+            // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
             String zkNode = createZkNodeName(zkPath, rootPath, file);
             try {
               // if the path exists (and presumably we're uploading data to it) just set its data
@@ -437,6 +438,7 @@ public class ZkMaintenanceUtils {
         if (isFileForbiddenInConfigSets(zkPath)) {
           log.warn("Skipping download of file from ZK, as it is a forbidden type: {}", zkPath);
         } else {
+          // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
           if (copyDataDown(zkClient, zkPath, file) == 0) {
             Files.createFile(file);
           }
diff --git a/versions.lock b/versions.lock
index 9c0f9ef53d4..6b6ea467e0d 100644
--- a/versions.lock
+++ b/versions.lock
@@ -62,6 +62,7 @@ com.googlecode.plist:dd-plist:1.24 (1 constraints: 300c84f5)
 com.healthmarketscience.jackcess:jackcess:4.0.2 (1 constraints: 5d0cf201)
 com.healthmarketscience.jackcess:jackcess-encrypt:4.0.1 (1 constraints: 5c0cf101)
 com.ibm.icu:icu4j:70.1 (1 constraints: a90f1784)
+com.j256.simplemagic:simplemagic:1.17 (1 constraints: dd04f830)
 com.jayway.jsonpath:json-path:2.8.0 (2 constraints: 6c12952c)
 com.lmax:disruptor:3.4.4 (1 constraints: 0d050a36)
 com.mchange:c3p0:0.9.5.5 (1 constraints: c80c571b)
diff --git a/versions.props b/versions.props
index 10b583c43e2..cfa127e1094 100644
--- a/versions.props
+++ b/versions.props
@@ -13,6 +13,7 @@ com.google.cloud:google-cloud-bom=0.204.0
 com.google.errorprone:*=2.23.0
 com.google.guava:guava=32.1.3-jre
 com.google.re2j:re2j=1.7
+com.j256.simplemagic:simplemagic=1.17
 com.jayway.jsonpath:json-path=2.8.0
 com.lmax:disruptor=3.4.4
 com.tdunning:t-digest=3.1


Re: (solr) branch main updated: SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets

Posted by Jan Høydahl <ja...@cominvent.com>.
Sorry 'bout that, I'm on it.

Jan

> 15. des. 2023 kl. 23:32 skrev Chris Hostetter <ho...@fucit.org>:
> 
> 
> This change, and it's associated backports, seem to have broken 
> TestConfigSetService (regardless of seed?) due to leaked files.
> 
> https://ci-builds.apache.org/job/Solr/job/Solr-Check-main/8576/consoleText
> https://jenkins.thetaphi.de/view/Solr/job/Solr-main-Windows/3706/consoleText
> https://ci-builds.apache.org/job/Solr/job/Solr-Check-9.x/39/consoleText
> https://ci-builds.apache.org/job/Solr/job/Solr-check-9.4/1208/consoleText
> 
> 
> 
> : Date: Wed, 13 Dec 2023 22:08:04 +0000
> : From: janhoy@apache.org
> : Reply-To: dev@solr.apache.org
> : To: "commits@solr.apache.org" <co...@solr.apache.org>
> : Subject: (solr) branch main updated: SOLR-16949: Restrict certain file types
> :     from being uploaded to or downloaded from Config Sets
> : 
> : This is an automated email from the ASF dual-hosted git repository.
> : 
> : janhoy pushed a commit to branch main
> : in repository https://gitbox.apache.org/repos/asf/solr.git
> : 
> : 
> : The following commit(s) were added to refs/heads/main by this push:
> :      new 15534754f49 SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
> : 15534754f49 is described below
> : 
> : commit 15534754f492079e52288dd11abaf1c4261b3ea4
> : Author: Jan Høydahl <ja...@apache.org>
> : AuthorDate: Wed Dec 13 22:49:23 2023 +0100
> : 
> :     SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
> : ---
> :  solr/CHANGES.txt                                   |   2 +
> :  solr/core/build.gradle                             |   2 +
> :  .../org/apache/solr/cli/ConfigSetUploadTool.java   |   2 +
> :  .../org/apache/solr/cloud/ZkConfigSetService.java  |  21 ++-
> :  .../solr/core/FileSystemConfigSetService.java      |  28 +++-
> :  .../org/apache/solr/core/backup/BackupManager.java |  23 ++-
> :  .../handler/configsets/UploadConfigSetFileAPI.java |   8 +-
> :  .../org/apache/solr/util/FileTypeMagicUtil.java    | 166 +++++++++++++++++++++
> :  solr/core/src/resources/magic/executables          |  74 +++++++++
> :  solr/core/src/test-files/magic/HelloWorld.java.txt |   5 +
> :  .../test-files/magic/HelloWorldJavaClass.class.bin | Bin 0 -> 426 bytes
> :  solr/core/src/test-files/magic/README.md           |  29 ++++
> :  solr/core/src/test-files/magic/hello.tar.bin       | Bin 0 -> 4096 bytes
> :  solr/core/src/test-files/magic/plain.txt           |   1 +
> :  solr/core/src/test-files/magic/shell.sh.txt        |   2 +
> :  .../org/apache/solr/cloud/TestConfigSetsAPI.java   | 141 +++++++++++------
> :  .../apache/solr/util/FileTypeMagicUtilTest.java    |  54 +++++++
> :  solr/licenses/simplemagic-1.17.jar.sha1            |   1 +
> :  solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt     |  15 ++
> :  solr/licenses/simplemagic-NOTICE.txt               |   0
> :  .../solr/common/cloud/ZkMaintenanceUtils.java      |   2 +
> :  versions.lock                                      |   1 +
> :  versions.props                                     |   1 +
> :  23 files changed, 522 insertions(+), 56 deletions(-)
> : 
> : diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
> : index 40da8c435ac..2fd94304a24 100644
> : --- a/solr/CHANGES.txt
> : +++ b/solr/CHANGES.txt
> : @@ -169,6 +169,8 @@ Other Changes
> :  * SOLR-17091: dev tools script cloud.sh became broken after changes in 9.3 added a new -slim.tgz file it was not expecting
> :    cloud.sh has been updated to ignore the -slim.tgz version of the tarball.
> :  
> : +* SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets (janhoy, Houston Putman)
> : +
> :  ==================  9.4.0 ==================
> :  New Features
> :  ---------------------
> : diff --git a/solr/core/build.gradle b/solr/core/build.gradle
> : index 61ecd1713af..ed2c8a370ae 100644
> : --- a/solr/core/build.gradle
> : +++ b/solr/core/build.gradle
> : @@ -159,6 +159,8 @@ dependencies {
> :  
> :    compileOnly 'com.github.stephenc.jcip:jcip-annotations'
> :  
> : +  implementation 'com.j256.simplemagic:simplemagic'
> : +
> :    // -- Test Dependencies
> :  
> :    testRuntimeOnly 'org.slf4j:jcl-over-slf4j'
> : diff --git a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : index 5fd4a538bd7..6576742a195 100644
> : --- a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : +++ b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : @@ -27,6 +27,7 @@ import org.apache.solr.client.solrj.impl.SolrZkClientTimeout;
> :  import org.apache.solr.common.cloud.SolrZkClient;
> :  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
> :  import org.apache.solr.core.ConfigSetService;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.slf4j.Logger;
> :  import org.slf4j.LoggerFactory;
> :  
> : @@ -101,6 +102,7 @@ public class ConfigSetUploadTool extends ToolBase {
> :                + cli.getOptionValue("confname")
> :                + " to ZooKeeper at "
> :                + zkHost);
> : +      FileTypeMagicUtil.assertConfigSetFolderLegal(confPath);
> :        ZkMaintenanceUtils.uploadToZK(
> :            zkClient,
> :            confPath,
> : diff --git a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : index f02404d636d..9abde098e1c 100644
> : --- a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : +++ b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : @@ -22,6 +22,7 @@ import java.nio.file.Path;
> :  import java.util.ArrayList;
> :  import java.util.Collections;
> :  import java.util.List;
> : +import java.util.Locale;
> :  import java.util.Map;
> :  import java.util.Objects;
> :  import org.apache.solr.client.solrj.cloud.SolrCloudManager;
> : @@ -39,6 +40,7 @@ import org.apache.solr.core.CoreContainer;
> :  import org.apache.solr.core.CoreDescriptor;
> :  import org.apache.solr.core.SolrConfig;
> :  import org.apache.solr.core.SolrResourceLoader;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.apache.zookeeper.CreateMode;
> :  import org.apache.zookeeper.KeeperException;
> :  import org.apache.zookeeper.data.Stat;
> : @@ -199,6 +201,15 @@ public class ZkConfigSetService extends ConfigSetService {
> :      try {
> :        if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
> :          log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
> : +      } else if (FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        throw new SolrException(
> : +            SolrException.ErrorCode.BAD_REQUEST,
> : +            String.format(
> : +                Locale.ROOT,
> : +                "Not uploading file %s to config, as it matched the MAGIC signature of a forbidden mime type %s",
> : +                fileName,
> : +                mimeType));
> :        } else {
> :          // if overwriteOnExists is true then zkClient#makePath failOnExists is set to false
> :          zkClient.makePath(filePath, data, CreateMode.PERSISTENT, null, !overwriteOnExists, true);
> : @@ -340,7 +351,15 @@ public class ZkConfigSetService extends ConfigSetService {
> :      } else {
> :        log.debug("Copying zk node {} to {}", fromZkFilePath, toZkFilePath);
> :        byte[] data = zkClient.getData(fromZkFilePath, null, null, true);
> : -      zkClient.makePath(toZkFilePath, data, true);
> : +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        zkClient.makePath(toZkFilePath, data, true);
> : +      } else {
> : +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        log.warn(
> : +            "Skipping copy of file {} in ZK, as it matched the MAGIC signature of a forbidden mime type {}",
> : +            fromZkFilePath,
> : +            mimeType);
> : +      }
> :      }
> :    }
> :  
> : diff --git a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : index 1f1a42b15e1..4b041252211 100644
> : --- a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : +++ b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : @@ -37,6 +37,7 @@ import java.util.stream.Stream;
> :  import org.apache.solr.common.SolrException;
> :  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
> :  import org.apache.solr.common.util.Utils;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.slf4j.Logger;
> :  import org.slf4j.LoggerFactory;
> :  
> : @@ -150,9 +151,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
> :      if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
> :        log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
> :      } else {
> : -      Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
> : -      if (!Files.exists(filePath) || overwriteOnExists) {
> : -        Files.write(filePath, data);
> : +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
> : +        if (!Files.exists(filePath) || overwriteOnExists) {
> : +          Files.write(filePath, data);
> : +        }
> : +      } else {
> : +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        log.warn(
> : +            "Not including uploading file {}, as it matched the MAGIC signature of a forbidden mime type {}",
> : +            fileName,
> : +            mimeType);
> :        }
> :      }
> :    }
> : @@ -205,8 +214,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
> :                      "Not including uploading file to config, as it is a forbidden type: {}",
> :                      file.getFileName());
> :                } else {
> : -                Files.copy(
> : -                    file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
> : +                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(Files.newInputStream(file))) {
> : +                  Files.copy(
> : +                      file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
> : +                } else {
> : +                  String mimeType =
> : +                      FileTypeMagicUtil.INSTANCE.guessMimeType(Files.newInputStream(file));
> : +                  log.warn(
> : +                      "Not copying file {}, as it matched the MAGIC signature of a forbidden mime type {}",
> : +                      file.getFileName(),
> : +                      mimeType);
> : +                }
> :                }
> :                return FileVisitResult.CONTINUE;
> :              }
> : diff --git a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : index be6a1a83c2f..8ff78b27e08 100644
> : --- a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : +++ b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : @@ -40,6 +40,7 @@ import org.apache.solr.common.cloud.ZkStateReader;
> :  import org.apache.solr.common.util.Utils;
> :  import org.apache.solr.core.ConfigSetService;
> :  import org.apache.solr.core.backup.repository.BackupRepository;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.apache.zookeeper.CreateMode;
> :  import org.apache.zookeeper.KeeperException;
> :  import org.slf4j.Logger;
> : @@ -349,8 +350,16 @@ public class BackupManager {
> :            if (data == null) {
> :              data = new byte[0];
> :            }
> : -          try (OutputStream os = repository.createOutput(uri)) {
> : -            os.write(data);
> : +          if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +            try (OutputStream os = repository.createOutput(uri)) {
> : +              os.write(data);
> : +            }
> : +          } else {
> : +            String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +            log.warn(
> : +                "Not including zookeeper file {} in backup, as it matched the MAGIC signature of a forbidden mime type {}",
> : +                filePath,
> : +                mimeType);
> :            }
> :          }
> :        } else {
> : @@ -379,7 +388,15 @@ public class BackupManager {
> :                  // probably ok since the config file should be small.
> :                  byte[] arr = new byte[(int) is.length()];
> :                  is.readBytes(arr, 0, (int) is.length());
> : -                configSetService.uploadFileToConfig(configName, filePath, arr, false);
> : +                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(arr)) {
> : +                  configSetService.uploadFileToConfig(configName, filePath, arr, false);
> : +                } else {
> : +                  String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(arr);
> : +                  log.warn(
> : +                      "Not including zookeeper file {} in restore, as it matched the MAGIC signature of a forbidden mime type {}",
> : +                      filePath,
> : +                      mimeType);
> : +                }
> :                }
> :              }
> :              break;
> : diff --git a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : index 98889aff563..2380a79a92b 100644
> : --- a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : +++ b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : @@ -27,6 +27,7 @@ import org.apache.solr.common.params.ConfigSetParams;
> :  import org.apache.solr.core.CoreContainer;
> :  import org.apache.solr.request.SolrQueryRequest;
> :  import org.apache.solr.response.SolrQueryResponse;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  
> :  /**
> :   * V2 API for adding or updating a single file within a configset.
> : @@ -67,11 +68,13 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
> :      if (fixedSingleFilePath.charAt(0) == '/') {
> :        fixedSingleFilePath = fixedSingleFilePath.substring(1);
> :      }
> : +    byte[] data = inputStream.readAllBytes();
> :      if (fixedSingleFilePath.isEmpty()) {
> :        throw new SolrException(
> :            SolrException.ErrorCode.BAD_REQUEST,
> :            "The file path provided for upload, '" + singleFilePath + "', is not valid.");
> : -    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)) {
> : +    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)
> : +        || FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> :        throw new SolrException(
> :            SolrException.ErrorCode.BAD_REQUEST,
> :            "The file type provided for upload, '"
> : @@ -87,8 +90,7 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
> :        // For creating the baseNode, the cleanup parameter is only allowed to be true when
> :        // singleFilePath is not passed.
> :        createBaseNode(configSetService, overwritesExisting, requestIsTrusted, configSetName);
> : -      configSetService.uploadFileToConfig(
> : -          configSetName, fixedSingleFilePath, inputStream.readAllBytes(), allowOverwrite);
> : +      configSetService.uploadFileToConfig(configSetName, fixedSingleFilePath, data, allowOverwrite);
> :      }
> :    }
> :  }
> : diff --git a/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
> : new file mode 100644
> : index 00000000000..cfb6c9fa0af
> : --- /dev/null
> : +++ b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
> : @@ -0,0 +1,166 @@
> : +/*
> : + * Licensed to the Apache Software Foundation (ASF) under one or more
> : + * contributor license agreements.  See the NOTICE file distributed with
> : + * this work for additional information regarding copyright ownership.
> : + * The ASF 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.
> : + */
> : +
> : +package org.apache.solr.util;
> : +
> : +import com.j256.simplemagic.ContentInfo;
> : +import com.j256.simplemagic.ContentInfoUtil;
> : +import com.j256.simplemagic.ContentType;
> : +import java.io.ByteArrayInputStream;
> : +import java.io.IOException;
> : +import java.io.InputStream;
> : +import java.nio.file.FileVisitResult;
> : +import java.nio.file.Files;
> : +import java.nio.file.Path;
> : +import java.nio.file.SimpleFileVisitor;
> : +import java.nio.file.attribute.BasicFileAttributes;
> : +import java.util.Arrays;
> : +import java.util.HashSet;
> : +import java.util.Locale;
> : +import java.util.Set;
> : +import org.apache.solr.common.SolrException;
> : +
> : +/** Utility class to guess the mime type of file based on its magic number. */
> : +public class FileTypeMagicUtil implements ContentInfoUtil.ErrorCallBack {
> : +  private final ContentInfoUtil util;
> : +  private static final Set<String> SKIP_FOLDERS = new HashSet<>(Arrays.asList(".", ".."));
> : +
> : +  public static FileTypeMagicUtil INSTANCE = new FileTypeMagicUtil();
> : +
> : +  FileTypeMagicUtil() {
> : +    try {
> : +      util = new ContentInfoUtil("/magic/executables", this);
> : +    } catch (IOException e) {
> : +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error parsing magic file", e);
> : +    }
> : +  }
> : +
> : +  /**
> : +   * Asserts that an entire configset folder is legal to upload.
> : +   *
> : +   * @param confPath the path to the folder
> : +   * @throws SolrException if an illegal file is found in the folder structure
> : +   */
> : +  public static void assertConfigSetFolderLegal(Path confPath) throws IOException {
> : +    Files.walkFileTree(
> : +        confPath,
> : +        new SimpleFileVisitor<Path>() {
> : +          @Override
> : +          public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
> : +              throws IOException {
> : +            // Read first 100 bytes of the file to determine the mime type
> : +            try (InputStream fileStream = Files.newInputStream(file)) {
> : +              byte[] bytes = new byte[100];
> : +              fileStream.read(bytes);
> : +              if (FileTypeMagicUtil.isFileForbiddenInConfigset(bytes)) {
> : +                throw new SolrException(
> : +                    SolrException.ErrorCode.BAD_REQUEST,
> : +                    String.format(
> : +                        Locale.ROOT,
> : +                        "Not uploading file %s to configset, as it matched the MAGIC signature of a forbidden mime type %s",
> : +                        file,
> : +                        FileTypeMagicUtil.INSTANCE.guessMimeType(bytes)));
> : +              }
> : +              return FileVisitResult.CONTINUE;
> : +            }
> : +          }
> : +
> : +          @Override
> : +          public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
> : +              throws IOException {
> : +            if (SKIP_FOLDERS.contains(dir.getFileName().toString()))
> : +              return FileVisitResult.SKIP_SUBTREE;
> : +
> : +            return FileVisitResult.CONTINUE;
> : +          }
> : +        });
> : +  }
> : +
> : +  /**
> : +   * Guess the mime type of file based on its magic number.
> : +   *
> : +   * @param stream input stream of the file
> : +   * @return string with content-type or "application/octet-stream" if unknown
> : +   */
> : +  public String guessMimeType(InputStream stream) {
> : +    try {
> : +      ContentInfo info = util.findMatch(stream);
> : +      if (info == null) {
> : +        return ContentType.OTHER.getMimeType();
> : +      }
> : +      return info.getContentType().getMimeType();
> : +    } catch (IOException e) {
> : +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
> : +    }
> : +  }
> : +
> : +  /**
> : +   * Guess the mime type of file bytes based on its magic number.
> : +   *
> : +   * @param bytes the first bytes at start of the file
> : +   * @return string with content-type or "application/octet-stream" if unknown
> : +   */
> : +  public String guessMimeType(byte[] bytes) {
> : +    return guessMimeType(new ByteArrayInputStream(bytes));
> : +  }
> : +
> : +  @Override
> : +  public void error(String line, String details, Exception e) {
> : +    throw new SolrException(
> : +        SolrException.ErrorCode.SERVER_ERROR,
> : +        String.format(Locale.ROOT, "%s: %s", line, details),
> : +        e);
> : +  }
> : +
> : +  /**
> : +   * Determine forbidden file type based on magic bytes matching of the file itself. Forbidden types
> : +   * are:
> : +   *
> : +   * <ul>
> : +   *   <li><code>application/x-java-applet</code>: java class file
> : +   *   <li><code>application/zip</code>: jar or zip archives
> : +   *   <li><code>application/x-tar</code>: tar archives
> : +   *   <li><code>text/x-shellscript</code>: shell or bash script
> : +   * </ul>
> : +   *
> : +   * @param fileStream stream from the file content
> : +   * @return true if file is among the forbidden mime-types
> : +   */
> : +  public static boolean isFileForbiddenInConfigset(InputStream fileStream) {
> : +    return forbiddenTypes.contains(FileTypeMagicUtil.INSTANCE.guessMimeType(fileStream));
> : +  }
> : +
> : +  /**
> : +   * Determine forbidden file type based on magic bytes matching of the first bytes of the file.
> : +   *
> : +   * @param bytes byte array of the file content
> : +   * @return true if file is among the forbidden mime-types
> : +   */
> : +  public static boolean isFileForbiddenInConfigset(byte[] bytes) {
> : +    if (bytes == null || bytes.length == 0)
> : +      return false; // A ZK znode may be a folder with no content
> : +    return isFileForbiddenInConfigset(new ByteArrayInputStream(bytes));
> : +  }
> : +
> : +  private static final Set<String> forbiddenTypes =
> : +      new HashSet<>(
> : +          Arrays.asList(
> : +              System.getProperty(
> : +                      "solr.configset.upload.mimetypes.forbidden",
> : +                      "application/x-java-applet,application/zip,application/x-tar,text/x-shellscript")
> : +                  .split(",")));
> : +}
> : diff --git a/solr/core/src/resources/magic/executables b/solr/core/src/resources/magic/executables
> : new file mode 100644
> : index 00000000000..04094eaf797
> : --- /dev/null
> : +++ b/solr/core/src/resources/magic/executables
> : @@ -0,0 +1,74 @@
> : +#  Licensed to the Apache Software Foundation (ASF) under one or more
> : +#  contributor license agreements.  See the NOTICE file distributed with
> : +#  this work for additional information regarding copyright ownership.
> : +#  The ASF 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.
> : +
> : +# POSIX tar archives
> : +# URL: https://en.wikipedia.org/wiki/Tar_(computing)
> : +# Reference: https://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5&manpath=FreeBSD+8-current
> : +# header mainly padded with nul bytes
> : +500	quad		0
> : +!:strength /2
> : +# filename or extended attribute printable strings in range space null til umlaut ue
> : +>0	ubeshort	>0x1F00
> : +>>0	ubeshort	<0xFCFD
> : +# last 4 header bytes often null but tar\0 in gtarfail2.tar gtarfail.tar-bad
> : +# at https://sourceforge.net/projects/s-tar/files/testscripts/
> : +>>>508	ubelong&0x8B9E8DFF	0
> : +# nul, space or ascii digit 0-7 at start of mode
> : +>>>>100	ubyte&0xC8	=0
> : +>>>>>101 ubyte&0xC8	=0
> : +# nul, space at end of check sum
> : +>>>>>>155 ubyte&0xDF	=0
> : +# space or ascii digit 0 at start of check sum
> : +>>>>>>>148	ubyte&0xEF	=0x20
> : +# check for specific 1st member name that indicates other mime type and file name suffix
> : +>>>>>>>>0	string		TpmEmuTpms/permall
> : +!:mime	application/x-tar
> : +!:ext	tar
> : +# other stuff in padding
> : +# some implementations add new fields to the blank area at the end of the header record
> : +# created for example by DOS TAR 3.20g 1994 Tim V.Shapore with -j option
> : +>>257	ulong		!0		tar archive (old)
> : +!:mime	application/x-tar
> : +!:ext	tar
> : +# magic in newer, GNU, posix variants
> : +>257	string		=ustar
> : +# 2 last char of magic and UStar version because string expression does not work
> : +# 2 space characters followed by a null for GNU variant
> : +>>261	ubelong		=0x72202000	POSIX tar archive (GNU)
> : +!:mime	application/x-gtar
> : +!:ext	tar/gtar
> : +
> : +
> : +# Zip archives (Greg Roelofs, c/o zip-bugs@wkuvx1.wku.edu)
> : +0	string		PK\005\006	Zip archive data (empty)
> : +0	string		PK\003\004  Zip archive data
> : +!:strength +1
> : +!:mime application/zip
> : +!:ext zip/cbz
> : +
> : +
> : +# JAVA
> : +0	belong		0xcafebabe
> : +>4	ubelong		>30		compiled Java class data,
> : +!:mime	application/x-java-applet
> : +#!:mime	application/java-byte-code
> : +!:ext	class
> : +
> : +
> : +# SHELL scripts
> : +#0	string/w	:			shell archive or script for antique kernel text
> : +0	regex	\^#!\\s?(/bin/|/usr/)		POSIX shell script text executable
> : +!:mime	text/x-shellscript
> : +!:ext	sh/bash
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/HelloWorld.java.txt b/solr/core/src/test-files/magic/HelloWorld.java.txt
> : new file mode 100644
> : index 00000000000..ca9518d2afa
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/HelloWorld.java.txt
> : @@ -0,0 +1,5 @@
> : +class HelloWorld {
> : +  public static void main(String[] args) {
> : +    System.out.println("Hellow world");
> : +  }
> : +}
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin
> : new file mode 100644
> : index 00000000000..e15d0a6c5b9
> : Binary files /dev/null and b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin differ
> : diff --git a/solr/core/src/test-files/magic/README.md b/solr/core/src/test-files/magic/README.md
> : new file mode 100644
> : index 00000000000..6e499a2f711
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/README.md
> : @@ -0,0 +1,29 @@
> : +<!--
> : +    Licensed to the Apache Software Foundation (ASF) under one or more
> : +    contributor license agreements.  See the NOTICE file distributed with
> : +    this work for additional information regarding copyright ownership.
> : +    The ASF 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.
> : + -->
> : +
> : +The two binary files were created by the following commands:
> : +
> : +```bash
> : +echo "Hello" > hello.txt && \
> : +  tar -cvf hello.tar.bin hello.txt && \
> : +  rm hello.txt
> : +
> : +cp HelloWorld.java.txt HelloWorld.java && \
> : +  javac HelloWorld.java && \
> : +  mv HelloWorld.class HelloWorldJavaClass.class.bin && \
> : +  rm HelloWorld.java
> : +```
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/hello.tar.bin b/solr/core/src/test-files/magic/hello.tar.bin
> : new file mode 100644
> : index 00000000000..68ca23c362a
> : Binary files /dev/null and b/solr/core/src/test-files/magic/hello.tar.bin differ
> : diff --git a/solr/core/src/test-files/magic/plain.txt b/solr/core/src/test-files/magic/plain.txt
> : new file mode 100644
> : index 00000000000..70c379b63ff
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/plain.txt
> : @@ -0,0 +1 @@
> : +Hello world
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/shell.sh.txt b/solr/core/src/test-files/magic/shell.sh.txt
> : new file mode 100644
> : index 00000000000..9ea411e111d
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/shell.sh.txt
> : @@ -0,0 +1,2 @@
> : +#! /usr/bin/env bash
> : +echo Hello
> : \ No newline at end of file
> : diff --git a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : index 1da60d85ff9..f7c9431c296 100644
> : --- a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : +++ b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : @@ -45,6 +45,7 @@ import java.util.LinkedHashMap;
> :  import java.util.List;
> :  import java.util.Locale;
> :  import java.util.Map;
> : +import java.util.Objects;
> :  import java.util.Properties;
> :  import java.util.Set;
> :  import java.util.concurrent.TimeUnit;
> : @@ -592,14 +593,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :        assertEquals(
> :            "Can't overwrite an existing configset unless the overwrite parameter is set",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false, false));
> :        unIgnoreException("The configuration regulartestOverwrite-1 already exists in zookeeper");
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> :            getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml"));
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -638,13 +639,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :          zkClient.makePath(f, true);
> :        }
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
> :        for (String f : extraFiles) {
> :          assertTrue(
> :              "Expecting file " + f + " to exist in ConfigSet but it's gone",
> :              zkClient.exists(f, true));
> :        }
> : -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
> : +      assertEquals(
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
> :        for (String f : extraFiles) {
> :          assertFalse(
> :              "Expecting file " + f + " to be deleted from ConfigSet but it wasn't",
> : @@ -675,7 +677,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :              .withConnTimeOut(45000, TimeUnit.MILLISECONDS)
> :              .build()) {
> :        String configPath = "/configs/" + configsetName + configsetSuffix;
> : -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true));
> : +      assertEquals(
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true, false));
> :        for (String fileEnding : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> :          String f = configPath + "/test." + fileEnding;
> :          assertFalse(
> : @@ -710,7 +713,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :            getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml");
> :        // Was untrusted, overwrite with untrusted
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -721,7 +724,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :  
> :        // Was untrusted, overwrite with trusted but no cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
> : +          0,
> : +          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -747,7 +751,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :  
> :        // Was untrusted, overwrite with trusted with cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -761,7 +765,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :        assertEquals(
> :            "Can't upload a trusted configset with an untrusted request",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> : @@ -773,7 +777,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :        assertEquals(
> :            "Can't upload a trusted configset with an untrusted request",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> : @@ -783,7 +787,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :  
> :        // Was trusted, overwrite with trusted no cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
> : +          0,
> : +          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -794,7 +799,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :  
> :        // Was trusted, overwrite with trusted with cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -1457,6 +1462,13 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :              .get("id"));
> :    }
> :  
> : +  @Test
> : +  public void testUploadWithForbiddenContent() throws Exception {
> : +    // Uploads a config set containing a script, a class file and jar file, will return 400 error
> : +    long res = uploadConfigSet("forbidden", "suffix", "foo", true, false, true, false, true);
> : +    assertEquals(400, res);
> : +  }
> : +
> :    private static String getSecurityJson() {
> :      return "{\n"
> :          + "  'authentication':{\n"
> : @@ -1511,7 +1523,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :        String configSetName, String suffix, String username, SolrZkClient zkClient, boolean v2)
> :        throws IOException {
> :      assertFalse(getConfigSetService().checkConfigExists(configSetName + suffix));
> : -    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false);
> : +    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false, false);
> :    }
> :  
> :    private long uploadConfigSet(
> : @@ -1521,21 +1533,25 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :        boolean overwrite,
> :        boolean cleanup,
> :        boolean v2,
> : -      boolean forbiddenTypes)
> : +      boolean forbiddenTypes,
> : +      boolean forbiddenContent)
> :        throws IOException {
> :  
> : +    File zipFile;
> : +    if (forbiddenTypes) {
> : +      log.info("Uploading configset with forbidden file endings");
> : +      zipFile =
> : +          createTempZipFileWithForbiddenTypes(
> : +              "solr/configsets/upload/" + configSetName + "/solrconfig.xml");
> : +    } else if (forbiddenContent) {
> : +      log.info("Uploading configset with forbidden file content");
> : +      zipFile = createTempZipFileWithForbiddenContent("magic");
> : +    } else {
> : +      zipFile = createTempZipFile("solr/configsets/upload/" + configSetName);
> : +    }
> : +
> :      // Read zipped sample config
> : -    return uploadGivenConfigSet(
> : -        forbiddenTypes
> : -            ? createTempZipFileWithForbiddenTypes(
> : -                "solr/configsets/upload/" + configSetName + "/solrconfig.xml")
> : -            : createTempZipFile("solr/configsets/upload/" + configSetName),
> : -        configSetName,
> : -        suffix,
> : -        username,
> : -        overwrite,
> : -        cleanup,
> : -        v2);
> : +    return uploadGivenConfigSet(zipFile, configSetName, suffix, username, overwrite, cleanup, v2);
> :    }
> :  
> :    private long uploadBadConfigSet(String configSetName, String suffix, String username, boolean v2)
> : @@ -1702,31 +1718,68 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
> :      }
> :    }
> :  
> : -  private static void zipWithForbiddenEndings(File file, File zipfile) throws IOException {
> : -    OutputStream out = new FileOutputStream(zipfile);
> : -    ZipOutputStream zout = new ZipOutputStream(out);
> : +  /** Create a zip file (in the temp directory) containing files with forbidden content */
> : +  private File createTempZipFileWithForbiddenContent(String resourcePath) {
> :      try {
> : -      for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> : -        zout.putNextEntry(new ZipEntry("test." + fileType));
> : +      final File zipFile = createTempFile("configset", "zip").toFile();
> : +      final File directory = SolrTestCaseJ4.getFile(resourcePath);
> : +      if (log.isInfoEnabled()) {
> : +        log.info("Directory: {}", directory.getAbsolutePath());
> : +      }
> : +      zipWithForbiddenContent(directory, zipFile);
> : +      if (log.isInfoEnabled()) {
> : +        log.info("Zipfile: {}", zipFile.getAbsolutePath());
> : +      }
> : +      return zipFile;
> : +    } catch (IOException e) {
> : +      throw new RuntimeException(e);
> : +    }
> : +  }
> :  
> : -        InputStream in = new FileInputStream(file);
> : -        try {
> : -          byte[] buffer = new byte[1024];
> : -          while (true) {
> : -            int readCount = in.read(buffer);
> : -            if (readCount < 0) {
> : -              break;
> : +  private static void zipWithForbiddenContent(File directory, File zipfile) throws IOException {
> : +    OutputStream out = Files.newOutputStream(zipfile.toPath());
> : +    assertTrue(directory.isDirectory());
> : +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
> : +      // Copy in all files from the directory
> : +      for (File file : Objects.requireNonNull(directory.listFiles())) {
> : +        zout.putNextEntry(new ZipEntry(file.getName()));
> : +        zout.write(Files.readAllBytes(file.toPath()));
> : +        zout.closeEntry();
> : +      }
> : +    }
> : +  }
> : +
> : +  private static void zipWithForbiddenEndings(File fileOrDirectory, File zipfile)
> : +      throws IOException {
> : +    OutputStream out = new FileOutputStream(zipfile);
> : +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
> : +      if (fileOrDirectory.isFile()) {
> : +        // Create entries with given file, one for each forbidden endding
> : +        for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> : +          zout.putNextEntry(new ZipEntry("test." + fileType));
> : +
> : +          try (InputStream in = new FileInputStream(fileOrDirectory)) {
> : +            byte[] buffer = new byte[1024];
> : +            while (true) {
> : +              int readCount = in.read(buffer);
> : +              if (readCount < 0) {
> : +                break;
> : +              }
> : +              zout.write(buffer, 0, readCount);
> :              }
> : -            zout.write(buffer, 0, readCount);
> :            }
> : -        } finally {
> : -          in.close();
> : -        }
> :  
> : -        zout.closeEntry();
> : +          zout.closeEntry();
> : +        }
> : +      }
> : +      if (fileOrDirectory.isDirectory()) {
> : +        // Copy in all files from the directory
> : +        for (File file : Objects.requireNonNull(fileOrDirectory.listFiles())) {
> : +          zout.putNextEntry(new ZipEntry(file.getName()));
> : +          zout.write(Files.readAllBytes(file.toPath()));
> : +          zout.closeEntry();
> : +        }
> :        }
> : -    } finally {
> : -      zout.close();
> :      }
> :    }
> :  
> : diff --git a/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
> : new file mode 100644
> : index 00000000000..b8e9a35a3d9
> : --- /dev/null
> : +++ b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
> : @@ -0,0 +1,54 @@
> : +/*
> : + * Licensed to the Apache Software Foundation (ASF) under one or more
> : + * contributor license agreements.  See the NOTICE file distributed with
> : + * this work for additional information regarding copyright ownership.
> : + * The ASF 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.
> : + */
> : +
> : +package org.apache.solr.util;
> : +
> : +import org.apache.solr.SolrTestCaseJ4;
> : +
> : +public class FileTypeMagicUtilTest extends SolrTestCaseJ4 {
> : +  public void testGuessMimeType() {
> : +    assertEquals(
> : +        "application/x-java-applet",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
> : +    assertEquals(
> : +        "application/zip",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +            FileTypeMagicUtil.class.getResourceAsStream(
> : +                "/runtimecode/containerplugin.v.1.jar.bin")));
> : +    assertEquals(
> : +        "application/x-tar",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/hello.tar.bin")));
> : +    assertEquals(
> : +        "text/x-shellscript",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
> : +  }
> : +
> : +  public void testIsFileForbiddenInConfigset() {
> : +    assertTrue(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
> : +    assertTrue(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
> : +    assertFalse(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +            FileTypeMagicUtil.class.getResourceAsStream("/magic/plain.txt")));
> : +  }
> : +}
> : diff --git a/solr/licenses/simplemagic-1.17.jar.sha1 b/solr/licenses/simplemagic-1.17.jar.sha1
> : new file mode 100644
> : index 00000000000..cf101094cc8
> : --- /dev/null
> : +++ b/solr/licenses/simplemagic-1.17.jar.sha1
> : @@ -0,0 +1 @@
> : +b6e2d1e47d7172e57fa858a2e3940c09a590e61e
> : diff --git a/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
> : new file mode 100644
> : index 00000000000..9228230f933
> : --- /dev/null
> : +++ b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
> : @@ -0,0 +1,15 @@
> : +ISC License (https://opensource.org/licenses/ISC)
> : +
> : +Copyright 2021, Gray Watson
> : +
> : +Permission to use, copy, modify, and/or distribute this software for any
> : +purpose with or without fee is hereby granted, provided that the above
> : +copyright notice and this permission notice appear in all copies.
> : +
> : +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> : +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> : +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
> : +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> : +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> : +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> : +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> : \ No newline at end of file
> : diff --git a/solr/licenses/simplemagic-NOTICE.txt b/solr/licenses/simplemagic-NOTICE.txt
> : new file mode 100644
> : index 00000000000..e69de29bb2d
> : diff --git a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : index d571339880c..e40294a6683 100644
> : --- a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : +++ b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : @@ -348,6 +348,7 @@ public class ZkMaintenanceUtils {
> :                    USE_FORBIDDEN_FILE_TYPES);
> :                return FileVisitResult.CONTINUE;
> :              }
> : +            // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
> :              String zkNode = createZkNodeName(zkPath, rootPath, file);
> :              try {
> :                // if the path exists (and presumably we're uploading data to it) just set its data
> : @@ -437,6 +438,7 @@ public class ZkMaintenanceUtils {
> :          if (isFileForbiddenInConfigSets(zkPath)) {
> :            log.warn("Skipping download of file from ZK, as it is a forbidden type: {}", zkPath);
> :          } else {
> : +          // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
> :            if (copyDataDown(zkClient, zkPath, file) == 0) {
> :              Files.createFile(file);
> :            }
> : diff --git a/versions.lock b/versions.lock
> : index 9c0f9ef53d4..6b6ea467e0d 100644
> : --- a/versions.lock
> : +++ b/versions.lock
> : @@ -62,6 +62,7 @@ com.googlecode.plist:dd-plist:1.24 (1 constraints: 300c84f5)
> :  com.healthmarketscience.jackcess:jackcess:4.0.2 (1 constraints: 5d0cf201)
> :  com.healthmarketscience.jackcess:jackcess-encrypt:4.0.1 (1 constraints: 5c0cf101)
> :  com.ibm.icu:icu4j:70.1 (1 constraints: a90f1784)
> : +com.j256.simplemagic:simplemagic:1.17 (1 constraints: dd04f830)
> :  com.jayway.jsonpath:json-path:2.8.0 (2 constraints: 6c12952c)
> :  com.lmax:disruptor:3.4.4 (1 constraints: 0d050a36)
> :  com.mchange:c3p0:0.9.5.5 (1 constraints: c80c571b)
> : diff --git a/versions.props b/versions.props
> : index 10b583c43e2..cfa127e1094 100644
> : --- a/versions.props
> : +++ b/versions.props
> : @@ -13,6 +13,7 @@ com.google.cloud:google-cloud-bom=0.204.0
> :  com.google.errorprone:*=2.23.0
> :  com.google.guava:guava=32.1.3-jre
> :  com.google.re2j:re2j=1.7
> : +com.j256.simplemagic:simplemagic=1.17
> :  com.jayway.jsonpath:json-path=2.8.0
> :  com.lmax:disruptor=3.4.4
> :  com.tdunning:t-digest=3.1
> : 
> : 
> 
> -Hoss
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Re: (solr) branch main updated: SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets

Posted by David Smiley <ds...@apache.org>.
Have we discussed Jenkins/CI configuration to notify who it thinks may have
broken the build?  Even if I *might* have broken the build, I want it to
let me know!

On Fri, Dec 15, 2023 at 7:22 PM Chris Hostetter <ho...@fucit.org> wrote:

>
> This change, and it's associated backports, seem to have broken
> TestConfigSetService (regardless of seed?) due to leaked files.
>
> https://ci-builds.apache.org/job/Solr/job/Solr-Check-main/8576/consoleText
>
> https://jenkins.thetaphi.de/view/Solr/job/Solr-main-Windows/3706/consoleText
> https://ci-builds.apache.org/job/Solr/job/Solr-Check-9.x/39/consoleText
> https://ci-builds.apache.org/job/Solr/job/Solr-check-9.4/1208/consoleText
>
>
>
> : Date: Wed, 13 Dec 2023 22:08:04 +0000
> : From: janhoy@apache.org
> : Reply-To: dev@solr.apache.org
> : To: "commits@solr.apache.org" <co...@solr.apache.org>
> : Subject: (solr) branch main updated: SOLR-16949: Restrict certain file
> types
> :     from being uploaded to or downloaded from Config Sets
> :
> : This is an automated email from the ASF dual-hosted git repository.
> :
> : janhoy pushed a commit to branch main
> : in repository https://gitbox.apache.org/repos/asf/solr.git
> :
> :
> : The following commit(s) were added to refs/heads/main by this push:
> :      new 15534754f49 SOLR-16949: Restrict certain file types from being
> uploaded to or downloaded from Config Sets
> : 15534754f49 is described below
> :
> : commit 15534754f492079e52288dd11abaf1c4261b3ea4
> : Author: Jan Høydahl <ja...@apache.org>
> : AuthorDate: Wed Dec 13 22:49:23 2023 +0100
> :
> :     SOLR-16949: Restrict certain file types from being uploaded to or
> downloaded from Config Sets
> : ---
> :  solr/CHANGES.txt                                   |   2 +
> :  solr/core/build.gradle                             |   2 +
> :  .../org/apache/solr/cli/ConfigSetUploadTool.java   |   2 +
> :  .../org/apache/solr/cloud/ZkConfigSetService.java  |  21 ++-
> :  .../solr/core/FileSystemConfigSetService.java      |  28 +++-
> :  .../org/apache/solr/core/backup/BackupManager.java |  23 ++-
> :  .../handler/configsets/UploadConfigSetFileAPI.java |   8 +-
> :  .../org/apache/solr/util/FileTypeMagicUtil.java    | 166
> +++++++++++++++++++++
> :  solr/core/src/resources/magic/executables          |  74 +++++++++
> :  solr/core/src/test-files/magic/HelloWorld.java.txt |   5 +
> :  .../test-files/magic/HelloWorldJavaClass.class.bin | Bin 0 -> 426 bytes
> :  solr/core/src/test-files/magic/README.md           |  29 ++++
> :  solr/core/src/test-files/magic/hello.tar.bin       | Bin 0 -> 4096 bytes
> :  solr/core/src/test-files/magic/plain.txt           |   1 +
> :  solr/core/src/test-files/magic/shell.sh.txt        |   2 +
> :  .../org/apache/solr/cloud/TestConfigSetsAPI.java   | 141
> +++++++++++------
> :  .../apache/solr/util/FileTypeMagicUtilTest.java    |  54 +++++++
> :  solr/licenses/simplemagic-1.17.jar.sha1            |   1 +
> :  solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt     |  15 ++
> :  solr/licenses/simplemagic-NOTICE.txt               |   0
> :  .../solr/common/cloud/ZkMaintenanceUtils.java      |   2 +
> :  versions.lock                                      |   1 +
> :  versions.props                                     |   1 +
> :  23 files changed, 522 insertions(+), 56 deletions(-)
> :
> : diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
> : index 40da8c435ac..2fd94304a24 100644
> : --- a/solr/CHANGES.txt
> : +++ b/solr/CHANGES.txt
> : @@ -169,6 +169,8 @@ Other Changes
> :  * SOLR-17091: dev tools script cloud.sh became broken after changes in
> 9.3 added a new -slim.tgz file it was not expecting
> :    cloud.sh has been updated to ignore the -slim.tgz version of the
> tarball.
> :
> : +* SOLR-16949: Restrict certain file types from being uploaded to or
> downloaded from Config Sets (janhoy, Houston Putman)
> : +
> :  ==================  9.4.0 ==================
> :  New Features
> :  ---------------------
> : diff --git a/solr/core/build.gradle b/solr/core/build.gradle
> : index 61ecd1713af..ed2c8a370ae 100644
> : --- a/solr/core/build.gradle
> : +++ b/solr/core/build.gradle
> : @@ -159,6 +159,8 @@ dependencies {
> :
> :    compileOnly 'com.github.stephenc.jcip:jcip-annotations'
> :
> : +  implementation 'com.j256.simplemagic:simplemagic'
> : +
> :    // -- Test Dependencies
> :
> :    testRuntimeOnly 'org.slf4j:jcl-over-slf4j'
> : diff --git
> a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : index 5fd4a538bd7..6576742a195 100644
> : --- a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : +++ b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
> : @@ -27,6 +27,7 @@ import
> org.apache.solr.client.solrj.impl.SolrZkClientTimeout;
> :  import org.apache.solr.common.cloud.SolrZkClient;
> :  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
> :  import org.apache.solr.core.ConfigSetService;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.slf4j.Logger;
> :  import org.slf4j.LoggerFactory;
> :
> : @@ -101,6 +102,7 @@ public class ConfigSetUploadTool extends ToolBase {
> :                + cli.getOptionValue("confname")
> :                + " to ZooKeeper at "
> :                + zkHost);
> : +      FileTypeMagicUtil.assertConfigSetFolderLegal(confPath);
> :        ZkMaintenanceUtils.uploadToZK(
> :            zkClient,
> :            confPath,
> : diff --git
> a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : index f02404d636d..9abde098e1c 100644
> : --- a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : +++ b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
> : @@ -22,6 +22,7 @@ import java.nio.file.Path;
> :  import java.util.ArrayList;
> :  import java.util.Collections;
> :  import java.util.List;
> : +import java.util.Locale;
> :  import java.util.Map;
> :  import java.util.Objects;
> :  import org.apache.solr.client.solrj.cloud.SolrCloudManager;
> : @@ -39,6 +40,7 @@ import org.apache.solr.core.CoreContainer;
> :  import org.apache.solr.core.CoreDescriptor;
> :  import org.apache.solr.core.SolrConfig;
> :  import org.apache.solr.core.SolrResourceLoader;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.apache.zookeeper.CreateMode;
> :  import org.apache.zookeeper.KeeperException;
> :  import org.apache.zookeeper.data.Stat;
> : @@ -199,6 +201,15 @@ public class ZkConfigSetService extends
> ConfigSetService {
> :      try {
> :        if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
> :          log.warn("Not including uploading file to config, as it is a
> forbidden type: {}", fileName);
> : +      } else if (FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        String mimeType =
> FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        throw new SolrException(
> : +            SolrException.ErrorCode.BAD_REQUEST,
> : +            String.format(
> : +                Locale.ROOT,
> : +                "Not uploading file %s to config, as it matched the
> MAGIC signature of a forbidden mime type %s",
> : +                fileName,
> : +                mimeType));
> :        } else {
> :          // if overwriteOnExists is true then zkClient#makePath
> failOnExists is set to false
> :          zkClient.makePath(filePath, data, CreateMode.PERSISTENT, null,
> !overwriteOnExists, true);
> : @@ -340,7 +351,15 @@ public class ZkConfigSetService extends
> ConfigSetService {
> :      } else {
> :        log.debug("Copying zk node {} to {}", fromZkFilePath,
> toZkFilePath);
> :        byte[] data = zkClient.getData(fromZkFilePath, null, null, true);
> : -      zkClient.makePath(toZkFilePath, data, true);
> : +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        zkClient.makePath(toZkFilePath, data, true);
> : +      } else {
> : +        String mimeType =
> FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        log.warn(
> : +            "Skipping copy of file {} in ZK, as it matched the MAGIC
> signature of a forbidden mime type {}",
> : +            fromZkFilePath,
> : +            mimeType);
> : +      }
> :      }
> :    }
> :
> : diff --git
> a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : index 1f1a42b15e1..4b041252211 100644
> : ---
> a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : +++
> b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
> : @@ -37,6 +37,7 @@ import java.util.stream.Stream;
> :  import org.apache.solr.common.SolrException;
> :  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
> :  import org.apache.solr.common.util.Utils;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.slf4j.Logger;
> :  import org.slf4j.LoggerFactory;
> :
> : @@ -150,9 +151,17 @@ public class FileSystemConfigSetService extends
> ConfigSetService {
> :      if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
> :        log.warn("Not including uploading file to config, as it is a
> forbidden type: {}", fileName);
> :      } else {
> : -      Path filePath =
> getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
> : -      if (!Files.exists(filePath) || overwriteOnExists) {
> : -        Files.write(filePath, data);
> : +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +        Path filePath =
> getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
> : +        if (!Files.exists(filePath) || overwriteOnExists) {
> : +          Files.write(filePath, data);
> : +        }
> : +      } else {
> : +        String mimeType =
> FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +        log.warn(
> : +            "Not including uploading file {}, as it matched the MAGIC
> signature of a forbidden mime type {}",
> : +            fileName,
> : +            mimeType);
> :        }
> :      }
> :    }
> : @@ -205,8 +214,17 @@ public class FileSystemConfigSetService extends
> ConfigSetService {
> :                      "Not including uploading file to config, as it is a
> forbidden type: {}",
> :                      file.getFileName());
> :                } else {
> : -                Files.copy(
> : -                    file,
> target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
> : +                if
> (!FileTypeMagicUtil.isFileForbiddenInConfigset(Files.newInputStream(file)))
> {
> : +                  Files.copy(
> : +                      file,
> target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
> : +                } else {
> : +                  String mimeType =
> : +
> FileTypeMagicUtil.INSTANCE.guessMimeType(Files.newInputStream(file));
> : +                  log.warn(
> : +                      "Not copying file {}, as it matched the MAGIC
> signature of a forbidden mime type {}",
> : +                      file.getFileName(),
> : +                      mimeType);
> : +                }
> :                }
> :                return FileVisitResult.CONTINUE;
> :              }
> : diff --git
> a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : index be6a1a83c2f..8ff78b27e08 100644
> : --- a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : +++ b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
> : @@ -40,6 +40,7 @@ import org.apache.solr.common.cloud.ZkStateReader;
> :  import org.apache.solr.common.util.Utils;
> :  import org.apache.solr.core.ConfigSetService;
> :  import org.apache.solr.core.backup.repository.BackupRepository;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :  import org.apache.zookeeper.CreateMode;
> :  import org.apache.zookeeper.KeeperException;
> :  import org.slf4j.Logger;
> : @@ -349,8 +350,16 @@ public class BackupManager {
> :            if (data == null) {
> :              data = new byte[0];
> :            }
> : -          try (OutputStream os = repository.createOutput(uri)) {
> : -            os.write(data);
> : +          if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> : +            try (OutputStream os = repository.createOutput(uri)) {
> : +              os.write(data);
> : +            }
> : +          } else {
> : +            String mimeType =
> FileTypeMagicUtil.INSTANCE.guessMimeType(data);
> : +            log.warn(
> : +                "Not including zookeeper file {} in backup, as it
> matched the MAGIC signature of a forbidden mime type {}",
> : +                filePath,
> : +                mimeType);
> :            }
> :          }
> :        } else {
> : @@ -379,7 +388,15 @@ public class BackupManager {
> :                  // probably ok since the config file should be small.
> :                  byte[] arr = new byte[(int) is.length()];
> :                  is.readBytes(arr, 0, (int) is.length());
> : -                configSetService.uploadFileToConfig(configName,
> filePath, arr, false);
> : +                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(arr))
> {
> : +                  configSetService.uploadFileToConfig(configName,
> filePath, arr, false);
> : +                } else {
> : +                  String mimeType =
> FileTypeMagicUtil.INSTANCE.guessMimeType(arr);
> : +                  log.warn(
> : +                      "Not including zookeeper file {} in restore, as
> it matched the MAGIC signature of a forbidden mime type {}",
> : +                      filePath,
> : +                      mimeType);
> : +                }
> :                }
> :              }
> :              break;
> : diff --git
> a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : index 98889aff563..2380a79a92b 100644
> : ---
> a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : +++
> b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
> : @@ -27,6 +27,7 @@ import org.apache.solr.common.params.ConfigSetParams;
> :  import org.apache.solr.core.CoreContainer;
> :  import org.apache.solr.request.SolrQueryRequest;
> :  import org.apache.solr.response.SolrQueryResponse;
> : +import org.apache.solr.util.FileTypeMagicUtil;
> :
> :  /**
> :   * V2 API for adding or updating a single file within a configset.
> : @@ -67,11 +68,13 @@ public class UploadConfigSetFileAPI extends
> ConfigSetAPIBase {
> :      if (fixedSingleFilePath.charAt(0) == '/') {
> :        fixedSingleFilePath = fixedSingleFilePath.substring(1);
> :      }
> : +    byte[] data = inputStream.readAllBytes();
> :      if (fixedSingleFilePath.isEmpty()) {
> :        throw new SolrException(
> :            SolrException.ErrorCode.BAD_REQUEST,
> :            "The file path provided for upload, '" + singleFilePath + "',
> is not valid.");
> : -    } else if
> (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)) {
> : +    } else if
> (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)
> : +        || FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
> :        throw new SolrException(
> :            SolrException.ErrorCode.BAD_REQUEST,
> :            "The file type provided for upload, '"
> : @@ -87,8 +90,7 @@ public class UploadConfigSetFileAPI extends
> ConfigSetAPIBase {
> :        // For creating the baseNode, the cleanup parameter is only
> allowed to be true when
> :        // singleFilePath is not passed.
> :        createBaseNode(configSetService, overwritesExisting,
> requestIsTrusted, configSetName);
> : -      configSetService.uploadFileToConfig(
> : -          configSetName, fixedSingleFilePath,
> inputStream.readAllBytes(), allowOverwrite);
> : +      configSetService.uploadFileToConfig(configSetName,
> fixedSingleFilePath, data, allowOverwrite);
> :      }
> :    }
> :  }
> : diff --git
> a/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
> b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
> : new file mode 100644
> : index 00000000000..cfb6c9fa0af
> : --- /dev/null
> : +++ b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
> : @@ -0,0 +1,166 @@
> : +/*
> : + * Licensed to the Apache Software Foundation (ASF) under one or more
> : + * contributor license agreements.  See the NOTICE file distributed with
> : + * this work for additional information regarding copyright ownership.
> : + * The ASF 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.
> : + */
> : +
> : +package org.apache.solr.util;
> : +
> : +import com.j256.simplemagic.ContentInfo;
> : +import com.j256.simplemagic.ContentInfoUtil;
> : +import com.j256.simplemagic.ContentType;
> : +import java.io.ByteArrayInputStream;
> : +import java.io.IOException;
> : +import java.io.InputStream;
> : +import java.nio.file.FileVisitResult;
> : +import java.nio.file.Files;
> : +import java.nio.file.Path;
> : +import java.nio.file.SimpleFileVisitor;
> : +import java.nio.file.attribute.BasicFileAttributes;
> : +import java.util.Arrays;
> : +import java.util.HashSet;
> : +import java.util.Locale;
> : +import java.util.Set;
> : +import org.apache.solr.common.SolrException;
> : +
> : +/** Utility class to guess the mime type of file based on its magic
> number. */
> : +public class FileTypeMagicUtil implements ContentInfoUtil.ErrorCallBack
> {
> : +  private final ContentInfoUtil util;
> : +  private static final Set<String> SKIP_FOLDERS = new
> HashSet<>(Arrays.asList(".", ".."));
> : +
> : +  public static FileTypeMagicUtil INSTANCE = new FileTypeMagicUtil();
> : +
> : +  FileTypeMagicUtil() {
> : +    try {
> : +      util = new ContentInfoUtil("/magic/executables", this);
> : +    } catch (IOException e) {
> : +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR,
> "Error parsing magic file", e);
> : +    }
> : +  }
> : +
> : +  /**
> : +   * Asserts that an entire configset folder is legal to upload.
> : +   *
> : +   * @param confPath the path to the folder
> : +   * @throws SolrException if an illegal file is found in the folder
> structure
> : +   */
> : +  public static void assertConfigSetFolderLegal(Path confPath) throws
> IOException {
> : +    Files.walkFileTree(
> : +        confPath,
> : +        new SimpleFileVisitor<Path>() {
> : +          @Override
> : +          public FileVisitResult visitFile(Path file,
> BasicFileAttributes attrs)
> : +              throws IOException {
> : +            // Read first 100 bytes of the file to determine the mime
> type
> : +            try (InputStream fileStream = Files.newInputStream(file)) {
> : +              byte[] bytes = new byte[100];
> : +              fileStream.read(bytes);
> : +              if (FileTypeMagicUtil.isFileForbiddenInConfigset(bytes)) {
> : +                throw new SolrException(
> : +                    SolrException.ErrorCode.BAD_REQUEST,
> : +                    String.format(
> : +                        Locale.ROOT,
> : +                        "Not uploading file %s to configset, as it
> matched the MAGIC signature of a forbidden mime type %s",
> : +                        file,
> : +
> FileTypeMagicUtil.INSTANCE.guessMimeType(bytes)));
> : +              }
> : +              return FileVisitResult.CONTINUE;
> : +            }
> : +          }
> : +
> : +          @Override
> : +          public FileVisitResult preVisitDirectory(Path dir,
> BasicFileAttributes attrs)
> : +              throws IOException {
> : +            if (SKIP_FOLDERS.contains(dir.getFileName().toString()))
> : +              return FileVisitResult.SKIP_SUBTREE;
> : +
> : +            return FileVisitResult.CONTINUE;
> : +          }
> : +        });
> : +  }
> : +
> : +  /**
> : +   * Guess the mime type of file based on its magic number.
> : +   *
> : +   * @param stream input stream of the file
> : +   * @return string with content-type or "application/octet-stream" if
> unknown
> : +   */
> : +  public String guessMimeType(InputStream stream) {
> : +    try {
> : +      ContentInfo info = util.findMatch(stream);
> : +      if (info == null) {
> : +        return ContentType.OTHER.getMimeType();
> : +      }
> : +      return info.getContentType().getMimeType();
> : +    } catch (IOException e) {
> : +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
> : +    }
> : +  }
> : +
> : +  /**
> : +   * Guess the mime type of file bytes based on its magic number.
> : +   *
> : +   * @param bytes the first bytes at start of the file
> : +   * @return string with content-type or "application/octet-stream" if
> unknown
> : +   */
> : +  public String guessMimeType(byte[] bytes) {
> : +    return guessMimeType(new ByteArrayInputStream(bytes));
> : +  }
> : +
> : +  @Override
> : +  public void error(String line, String details, Exception e) {
> : +    throw new SolrException(
> : +        SolrException.ErrorCode.SERVER_ERROR,
> : +        String.format(Locale.ROOT, "%s: %s", line, details),
> : +        e);
> : +  }
> : +
> : +  /**
> : +   * Determine forbidden file type based on magic bytes matching of the
> file itself. Forbidden types
> : +   * are:
> : +   *
> : +   * <ul>
> : +   *   <li><code>application/x-java-applet</code>: java class file
> : +   *   <li><code>application/zip</code>: jar or zip archives
> : +   *   <li><code>application/x-tar</code>: tar archives
> : +   *   <li><code>text/x-shellscript</code>: shell or bash script
> : +   * </ul>
> : +   *
> : +   * @param fileStream stream from the file content
> : +   * @return true if file is among the forbidden mime-types
> : +   */
> : +  public static boolean isFileForbiddenInConfigset(InputStream
> fileStream) {
> : +    return
> forbiddenTypes.contains(FileTypeMagicUtil.INSTANCE.guessMimeType(fileStream));
> : +  }
> : +
> : +  /**
> : +   * Determine forbidden file type based on magic bytes matching of the
> first bytes of the file.
> : +   *
> : +   * @param bytes byte array of the file content
> : +   * @return true if file is among the forbidden mime-types
> : +   */
> : +  public static boolean isFileForbiddenInConfigset(byte[] bytes) {
> : +    if (bytes == null || bytes.length == 0)
> : +      return false; // A ZK znode may be a folder with no content
> : +    return isFileForbiddenInConfigset(new ByteArrayInputStream(bytes));
> : +  }
> : +
> : +  private static final Set<String> forbiddenTypes =
> : +      new HashSet<>(
> : +          Arrays.asList(
> : +              System.getProperty(
> : +                      "solr.configset.upload.mimetypes.forbidden",
> : +
> "application/x-java-applet,application/zip,application/x-tar,text/x-shellscript")
> : +                  .split(",")));
> : +}
> : diff --git a/solr/core/src/resources/magic/executables
> b/solr/core/src/resources/magic/executables
> : new file mode 100644
> : index 00000000000..04094eaf797
> : --- /dev/null
> : +++ b/solr/core/src/resources/magic/executables
> : @@ -0,0 +1,74 @@
> : +#  Licensed to the Apache Software Foundation (ASF) under one or more
> : +#  contributor license agreements.  See the NOTICE file distributed with
> : +#  this work for additional information regarding copyright ownership.
> : +#  The ASF 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.
> : +
> : +# POSIX tar archives
> : +# URL: https://en.wikipedia.org/wiki/Tar_(computing)
> : +# Reference:
> https://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5&manpath=FreeBSD+8-current
> : +# header mainly padded with nul bytes
> : +500  quad            0
> : +!:strength /2
> : +# filename or extended attribute printable strings in range space null
> til umlaut ue
> : +>0   ubeshort        >0x1F00
> : +>>0  ubeshort        <0xFCFD
> : +# last 4 header bytes often null but tar\0 in gtarfail2.tar
> gtarfail.tar-bad
> : +# at https://sourceforge.net/projects/s-tar/files/testscripts/
> : +>>>508       ubelong&0x8B9E8DFF      0
> : +# nul, space or ascii digit 0-7 at start of mode
> : +>>>>100      ubyte&0xC8      =0
> : +>>>>>101 ubyte&0xC8  =0
> : +# nul, space at end of check sum
> : +>>>>>>155 ubyte&0xDF =0
> : +# space or ascii digit 0 at start of check sum
> : +>>>>>>>148   ubyte&0xEF      =0x20
> : +# check for specific 1st member name that indicates other mime type and
> file name suffix
> : +>>>>>>>>0    string          TpmEmuTpms/permall
> : +!:mime       application/x-tar
> : +!:ext        tar
> : +# other stuff in padding
> : +# some implementations add new fields to the blank area at the end of
> the header record
> : +# created for example by DOS TAR 3.20g 1994 Tim V.Shapore with -j option
> : +>>257        ulong           !0              tar archive (old)
> : +!:mime       application/x-tar
> : +!:ext        tar
> : +# magic in newer, GNU, posix variants
> : +>257 string          =ustar
> : +# 2 last char of magic and UStar version because string expression does
> not work
> : +# 2 space characters followed by a null for GNU variant
> : +>>261        ubelong         =0x72202000     POSIX tar archive (GNU)
> : +!:mime       application/x-gtar
> : +!:ext        tar/gtar
> : +
> : +
> : +# Zip archives (Greg Roelofs, c/o zip-bugs@wkuvx1.wku.edu)
> : +0    string          PK\005\006      Zip archive data (empty)
> : +0    string          PK\003\004  Zip archive data
> : +!:strength +1
> : +!:mime application/zip
> : +!:ext zip/cbz
> : +
> : +
> : +# JAVA
> : +0    belong          0xcafebabe
> : +>4   ubelong         >30             compiled Java class data,
> : +!:mime       application/x-java-applet
> : +#!:mime      application/java-byte-code
> : +!:ext        class
> : +
> : +
> : +# SHELL scripts
> : +#0   string/w        :                       shell archive or script
> for antique kernel text
> : +0    regex   \^#!\\s?(/bin/|/usr/)           POSIX shell script text
> executable
> : +!:mime       text/x-shellscript
> : +!:ext        sh/bash
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/HelloWorld.java.txt
> b/solr/core/src/test-files/magic/HelloWorld.java.txt
> : new file mode 100644
> : index 00000000000..ca9518d2afa
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/HelloWorld.java.txt
> : @@ -0,0 +1,5 @@
> : +class HelloWorld {
> : +  public static void main(String[] args) {
> : +    System.out.println("Hellow world");
> : +  }
> : +}
> : \ No newline at end of file
> : diff --git
> a/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin
> b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin
> : new file mode 100644
> : index 00000000000..e15d0a6c5b9
> : Binary files /dev/null and
> b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin differ
> : diff --git a/solr/core/src/test-files/magic/README.md
> b/solr/core/src/test-files/magic/README.md
> : new file mode 100644
> : index 00000000000..6e499a2f711
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/README.md
> : @@ -0,0 +1,29 @@
> : +<!--
> : +    Licensed to the Apache Software Foundation (ASF) under one or more
> : +    contributor license agreements.  See the NOTICE file distributed
> with
> : +    this work for additional information regarding copyright ownership.
> : +    The ASF 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.
> : + -->
> : +
> : +The two binary files were created by the following commands:
> : +
> : +```bash
> : +echo "Hello" > hello.txt && \
> : +  tar -cvf hello.tar.bin hello.txt && \
> : +  rm hello.txt
> : +
> : +cp HelloWorld.java.txt HelloWorld.java && \
> : +  javac HelloWorld.java && \
> : +  mv HelloWorld.class HelloWorldJavaClass.class.bin && \
> : +  rm HelloWorld.java
> : +```
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/hello.tar.bin
> b/solr/core/src/test-files/magic/hello.tar.bin
> : new file mode 100644
> : index 00000000000..68ca23c362a
> : Binary files /dev/null and
> b/solr/core/src/test-files/magic/hello.tar.bin differ
> : diff --git a/solr/core/src/test-files/magic/plain.txt
> b/solr/core/src/test-files/magic/plain.txt
> : new file mode 100644
> : index 00000000000..70c379b63ff
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/plain.txt
> : @@ -0,0 +1 @@
> : +Hello world
> : \ No newline at end of file
> : diff --git a/solr/core/src/test-files/magic/shell.sh.txt
> b/solr/core/src/test-files/magic/shell.sh.txt
> : new file mode 100644
> : index 00000000000..9ea411e111d
> : --- /dev/null
> : +++ b/solr/core/src/test-files/magic/shell.sh.txt
> : @@ -0,0 +1,2 @@
> : +#! /usr/bin/env bash
> : +echo Hello
> : \ No newline at end of file
> : diff --git
> a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : index 1da60d85ff9..f7c9431c296 100644
> : --- a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : +++ b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
> : @@ -45,6 +45,7 @@ import java.util.LinkedHashMap;
> :  import java.util.List;
> :  import java.util.Locale;
> :  import java.util.Map;
> : +import java.util.Objects;
> :  import java.util.Properties;
> :  import java.util.Set;
> :  import java.util.concurrent.TimeUnit;
> : @@ -592,14 +593,14 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :        assertEquals(
> :            "Can't overwrite an existing configset unless the overwrite
> parameter is set",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, false,
> false, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, false,
> false, v2, false, false));
> :        unIgnoreException("The configuration regulartestOverwrite-1
> already exists in zookeeper");
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> :            getConfigZNodeVersion(zkClient, configsetName,
> configsetSuffix, "solrconfig.xml"));
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -638,13 +639,14 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :          zkClient.makePath(f, true);
> :        }
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false, false));
> :        for (String f : extraFiles) {
> :          assertTrue(
> :              "Expecting file " + f + " to exist in ConfigSet but it's
> gone",
> :              zkClient.exists(f, true));
> :        }
> : -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix,
> null, true, true, v2, false));
> : +      assertEquals(
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, true, v2, false, false));
> :        for (String f : extraFiles) {
> :          assertFalse(
> :              "Expecting file " + f + " to be deleted from ConfigSet but
> it wasn't",
> : @@ -675,7 +677,8 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :              .withConnTimeOut(45000, TimeUnit.MILLISECONDS)
> :              .build()) {
> :        String configPath = "/configs/" + configsetName + configsetSuffix;
> : -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix,
> null, true, false, v2, true));
> : +      assertEquals(
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, true, false));
> :        for (String fileEnding :
> ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> :          String f = configPath + "/test." + fileEnding;
> :          assertFalse(
> : @@ -710,7 +713,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :            getConfigZNodeVersion(zkClient, configsetName,
> configsetSuffix, "solrconfig.xml");
> :        // Was untrusted, overwrite with untrusted
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, null,
> true, false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -721,7 +724,8 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :
> :        // Was untrusted, overwrite with trusted but no cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, false, v2, false));
> : +          0,
> : +          uploadConfigSet(configsetName, configsetSuffix, "solr", true,
> false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -747,7 +751,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :
> :        // Was untrusted, overwrite with trusted with cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, true, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, true, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -761,7 +765,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :        assertEquals(
> :            "Can't upload a trusted configset with an untrusted request",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, true,
> false, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, true,
> false, v2, false, false));
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> : @@ -773,7 +777,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :        assertEquals(
> :            "Can't upload a trusted configset with an untrusted request",
> :            400,
> : -          uploadConfigSet(configsetName, configsetSuffix, null, true,
> true, v2, false));
> : +          uploadConfigSet(configsetName, configsetSuffix, null, true,
> true, v2, false, false));
> :        assertEquals(
> :            "Expecting version to remain equal",
> :            solrconfigZkVersion,
> : @@ -783,7 +787,8 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :
> :        // Was trusted, overwrite with trusted no cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, false, v2, false));
> : +          0,
> : +          uploadConfigSet(configsetName, configsetSuffix, "solr", true,
> false, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -794,7 +799,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :
> :        // Was trusted, overwrite with trusted with cleanup
> :        assertEquals(
> : -          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, true, v2, false));
> : +          0, uploadConfigSet(configsetName, configsetSuffix, "solr",
> true, true, v2, false, false));
> :        assertTrue(
> :            "Expecting version bump",
> :            solrconfigZkVersion
> : @@ -1457,6 +1462,13 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :              .get("id"));
> :    }
> :
> : +  @Test
> : +  public void testUploadWithForbiddenContent() throws Exception {
> : +    // Uploads a config set containing a script, a class file and jar
> file, will return 400 error
> : +    long res = uploadConfigSet("forbidden", "suffix", "foo", true,
> false, true, false, true);
> : +    assertEquals(400, res);
> : +  }
> : +
> :    private static String getSecurityJson() {
> :      return "{\n"
> :          + "  'authentication':{\n"
> : @@ -1511,7 +1523,7 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :        String configSetName, String suffix, String username,
> SolrZkClient zkClient, boolean v2)
> :        throws IOException {
> :      assertFalse(getConfigSetService().checkConfigExists(configSetName +
> suffix));
> : -    return uploadConfigSet(configSetName, suffix, username, false,
> false, v2, false);
> : +    return uploadConfigSet(configSetName, suffix, username, false,
> false, v2, false, false);
> :    }
> :
> :    private long uploadConfigSet(
> : @@ -1521,21 +1533,25 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :        boolean overwrite,
> :        boolean cleanup,
> :        boolean v2,
> : -      boolean forbiddenTypes)
> : +      boolean forbiddenTypes,
> : +      boolean forbiddenContent)
> :        throws IOException {
> :
> : +    File zipFile;
> : +    if (forbiddenTypes) {
> : +      log.info("Uploading configset with forbidden file endings");
> : +      zipFile =
> : +          createTempZipFileWithForbiddenTypes(
> : +              "solr/configsets/upload/" + configSetName +
> "/solrconfig.xml");
> : +    } else if (forbiddenContent) {
> : +      log.info("Uploading configset with forbidden file content");
> : +      zipFile = createTempZipFileWithForbiddenContent("magic");
> : +    } else {
> : +      zipFile = createTempZipFile("solr/configsets/upload/" +
> configSetName);
> : +    }
> : +
> :      // Read zipped sample config
> : -    return uploadGivenConfigSet(
> : -        forbiddenTypes
> : -            ? createTempZipFileWithForbiddenTypes(
> : -                "solr/configsets/upload/" + configSetName +
> "/solrconfig.xml")
> : -            : createTempZipFile("solr/configsets/upload/" +
> configSetName),
> : -        configSetName,
> : -        suffix,
> : -        username,
> : -        overwrite,
> : -        cleanup,
> : -        v2);
> : +    return uploadGivenConfigSet(zipFile, configSetName, suffix,
> username, overwrite, cleanup, v2);
> :    }
> :
> :    private long uploadBadConfigSet(String configSetName, String suffix,
> String username, boolean v2)
> : @@ -1702,31 +1718,68 @@ public class TestConfigSetsAPI extends
> SolrCloudTestCase {
> :      }
> :    }
> :
> : -  private static void zipWithForbiddenEndings(File file, File zipfile)
> throws IOException {
> : -    OutputStream out = new FileOutputStream(zipfile);
> : -    ZipOutputStream zout = new ZipOutputStream(out);
> : +  /** Create a zip file (in the temp directory) containing files with
> forbidden content */
> : +  private File createTempZipFileWithForbiddenContent(String
> resourcePath) {
> :      try {
> : -      for (String fileType :
> ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> : -        zout.putNextEntry(new ZipEntry("test." + fileType));
> : +      final File zipFile = createTempFile("configset", "zip").toFile();
> : +      final File directory = SolrTestCaseJ4.getFile(resourcePath);
> : +      if (log.isInfoEnabled()) {
> : +        log.info("Directory: {}", directory.getAbsolutePath());
> : +      }
> : +      zipWithForbiddenContent(directory, zipFile);
> : +      if (log.isInfoEnabled()) {
> : +        log.info("Zipfile: {}", zipFile.getAbsolutePath());
> : +      }
> : +      return zipFile;
> : +    } catch (IOException e) {
> : +      throw new RuntimeException(e);
> : +    }
> : +  }
> :
> : -        InputStream in = new FileInputStream(file);
> : -        try {
> : -          byte[] buffer = new byte[1024];
> : -          while (true) {
> : -            int readCount = in.read(buffer);
> : -            if (readCount < 0) {
> : -              break;
> : +  private static void zipWithForbiddenContent(File directory, File
> zipfile) throws IOException {
> : +    OutputStream out = Files.newOutputStream(zipfile.toPath());
> : +    assertTrue(directory.isDirectory());
> : +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
> : +      // Copy in all files from the directory
> : +      for (File file : Objects.requireNonNull(directory.listFiles())) {
> : +        zout.putNextEntry(new ZipEntry(file.getName()));
> : +        zout.write(Files.readAllBytes(file.toPath()));
> : +        zout.closeEntry();
> : +      }
> : +    }
> : +  }
> : +
> : +  private static void zipWithForbiddenEndings(File fileOrDirectory,
> File zipfile)
> : +      throws IOException {
> : +    OutputStream out = new FileOutputStream(zipfile);
> : +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
> : +      if (fileOrDirectory.isFile()) {
> : +        // Create entries with given file, one for each forbidden
> endding
> : +        for (String fileType :
> ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
> : +          zout.putNextEntry(new ZipEntry("test." + fileType));
> : +
> : +          try (InputStream in = new FileInputStream(fileOrDirectory)) {
> : +            byte[] buffer = new byte[1024];
> : +            while (true) {
> : +              int readCount = in.read(buffer);
> : +              if (readCount < 0) {
> : +                break;
> : +              }
> : +              zout.write(buffer, 0, readCount);
> :              }
> : -            zout.write(buffer, 0, readCount);
> :            }
> : -        } finally {
> : -          in.close();
> : -        }
> :
> : -        zout.closeEntry();
> : +          zout.closeEntry();
> : +        }
> : +      }
> : +      if (fileOrDirectory.isDirectory()) {
> : +        // Copy in all files from the directory
> : +        for (File file :
> Objects.requireNonNull(fileOrDirectory.listFiles())) {
> : +          zout.putNextEntry(new ZipEntry(file.getName()));
> : +          zout.write(Files.readAllBytes(file.toPath()));
> : +          zout.closeEntry();
> : +        }
> :        }
> : -    } finally {
> : -      zout.close();
> :      }
> :    }
> :
> : diff --git
> a/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
> b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
> : new file mode 100644
> : index 00000000000..b8e9a35a3d9
> : --- /dev/null
> : +++ b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
> : @@ -0,0 +1,54 @@
> : +/*
> : + * Licensed to the Apache Software Foundation (ASF) under one or more
> : + * contributor license agreements.  See the NOTICE file distributed with
> : + * this work for additional information regarding copyright ownership.
> : + * The ASF 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.
> : + */
> : +
> : +package org.apache.solr.util;
> : +
> : +import org.apache.solr.SolrTestCaseJ4;
> : +
> : +public class FileTypeMagicUtilTest extends SolrTestCaseJ4 {
> : +  public void testGuessMimeType() {
> : +    assertEquals(
> : +        "application/x-java-applet",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
> : +    assertEquals(
> : +        "application/zip",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +            FileTypeMagicUtil.class.getResourceAsStream(
> : +                "/runtimecode/containerplugin.v.1.jar.bin")));
> : +    assertEquals(
> : +        "application/x-tar",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/hello.tar.bin")));
> : +    assertEquals(
> : +        "text/x-shellscript",
> : +        FileTypeMagicUtil.INSTANCE.guessMimeType(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
> : +  }
> : +
> : +  public void testIsFileForbiddenInConfigset() {
> : +    assertTrue(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
> : +    assertTrue(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
> : +    assertFalse(
> : +        FileTypeMagicUtil.isFileForbiddenInConfigset(
> : +
> FileTypeMagicUtil.class.getResourceAsStream("/magic/plain.txt")));
> : +  }
> : +}
> : diff --git a/solr/licenses/simplemagic-1.17.jar.sha1
> b/solr/licenses/simplemagic-1.17.jar.sha1
> : new file mode 100644
> : index 00000000000..cf101094cc8
> : --- /dev/null
> : +++ b/solr/licenses/simplemagic-1.17.jar.sha1
> : @@ -0,0 +1 @@
> : +b6e2d1e47d7172e57fa858a2e3940c09a590e61e
> : diff --git a/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
> b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
> : new file mode 100644
> : index 00000000000..9228230f933
> : --- /dev/null
> : +++ b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
> : @@ -0,0 +1,15 @@
> : +ISC License (https://opensource.org/licenses/ISC)
> : +
> : +Copyright 2021, Gray Watson
> : +
> : +Permission to use, copy, modify, and/or distribute this software for any
> : +purpose with or without fee is hereby granted, provided that the above
> : +copyright notice and this permission notice appear in all copies.
> : +
> : +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> : +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> : +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
> : +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> : +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> : +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> : +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> : \ No newline at end of file
> : diff --git a/solr/licenses/simplemagic-NOTICE.txt
> b/solr/licenses/simplemagic-NOTICE.txt
> : new file mode 100644
> : index 00000000000..e69de29bb2d
> : diff --git
> a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : index d571339880c..e40294a6683 100644
> : ---
> a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : +++
> b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
> : @@ -348,6 +348,7 @@ public class ZkMaintenanceUtils {
> :                    USE_FORBIDDEN_FILE_TYPES);
> :                return FileVisitResult.CONTINUE;
> :              }
> : +            // TODO: Cannot check MAGIC header for file since
> FileTypeGuesser is in core
> :              String zkNode = createZkNodeName(zkPath, rootPath, file);
> :              try {
> :                // if the path exists (and presumably we're uploading
> data to it) just set its data
> : @@ -437,6 +438,7 @@ public class ZkMaintenanceUtils {
> :          if (isFileForbiddenInConfigSets(zkPath)) {
> :            log.warn("Skipping download of file from ZK, as it is a
> forbidden type: {}", zkPath);
> :          } else {
> : +          // TODO: Cannot check MAGIC header for file since
> FileTypeGuesser is in core
> :            if (copyDataDown(zkClient, zkPath, file) == 0) {
> :              Files.createFile(file);
> :            }
> : diff --git a/versions.lock b/versions.lock
> : index 9c0f9ef53d4..6b6ea467e0d 100644
> : --- a/versions.lock
> : +++ b/versions.lock
> : @@ -62,6 +62,7 @@ com.googlecode.plist:dd-plist:1.24 (1 constraints:
> 300c84f5)
> :  com.healthmarketscience.jackcess:jackcess:4.0.2 (1 constraints:
> 5d0cf201)
> :  com.healthmarketscience.jackcess:jackcess-encrypt:4.0.1 (1 constraints:
> 5c0cf101)
> :  com.ibm.icu:icu4j:70.1 (1 constraints: a90f1784)
> : +com.j256.simplemagic:simplemagic:1.17 (1 constraints: dd04f830)
> :  com.jayway.jsonpath:json-path:2.8.0 (2 constraints: 6c12952c)
> :  com.lmax:disruptor:3.4.4 (1 constraints: 0d050a36)
> :  com.mchange:c3p0:0.9.5.5 (1 constraints: c80c571b)
> : diff --git a/versions.props b/versions.props
> : index 10b583c43e2..cfa127e1094 100644
> : --- a/versions.props
> : +++ b/versions.props
> : @@ -13,6 +13,7 @@ com.google.cloud:google-cloud-bom=0.204.0
> :  com.google.errorprone:*=2.23.0
> :  com.google.guava:guava=32.1.3-jre
> :  com.google.re2j:re2j=1.7
> : +com.j256.simplemagic:simplemagic=1.17
> :  com.jayway.jsonpath:json-path=2.8.0
> :  com.lmax:disruptor=3.4.4
> :  com.tdunning:t-digest=3.1
> :
> :
>
> -Hoss
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@solr.apache.org
> For additional commands, e-mail: dev-help@solr.apache.org

Re: (solr) branch main updated: SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets

Posted by Chris Hostetter <ho...@fucit.org>.
This change, and it's associated backports, seem to have broken 
TestConfigSetService (regardless of seed?) due to leaked files.

https://ci-builds.apache.org/job/Solr/job/Solr-Check-main/8576/consoleText
https://jenkins.thetaphi.de/view/Solr/job/Solr-main-Windows/3706/consoleText
https://ci-builds.apache.org/job/Solr/job/Solr-Check-9.x/39/consoleText
https://ci-builds.apache.org/job/Solr/job/Solr-check-9.4/1208/consoleText



: Date: Wed, 13 Dec 2023 22:08:04 +0000
: From: janhoy@apache.org
: Reply-To: dev@solr.apache.org
: To: "commits@solr.apache.org" <co...@solr.apache.org>
: Subject: (solr) branch main updated: SOLR-16949: Restrict certain file types
:     from being uploaded to or downloaded from Config Sets
: 
: This is an automated email from the ASF dual-hosted git repository.
: 
: janhoy pushed a commit to branch main
: in repository https://gitbox.apache.org/repos/asf/solr.git
: 
: 
: The following commit(s) were added to refs/heads/main by this push:
:      new 15534754f49 SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
: 15534754f49 is described below
: 
: commit 15534754f492079e52288dd11abaf1c4261b3ea4
: Author: Jan Høydahl <ja...@apache.org>
: AuthorDate: Wed Dec 13 22:49:23 2023 +0100
: 
:     SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets
: ---
:  solr/CHANGES.txt                                   |   2 +
:  solr/core/build.gradle                             |   2 +
:  .../org/apache/solr/cli/ConfigSetUploadTool.java   |   2 +
:  .../org/apache/solr/cloud/ZkConfigSetService.java  |  21 ++-
:  .../solr/core/FileSystemConfigSetService.java      |  28 +++-
:  .../org/apache/solr/core/backup/BackupManager.java |  23 ++-
:  .../handler/configsets/UploadConfigSetFileAPI.java |   8 +-
:  .../org/apache/solr/util/FileTypeMagicUtil.java    | 166 +++++++++++++++++++++
:  solr/core/src/resources/magic/executables          |  74 +++++++++
:  solr/core/src/test-files/magic/HelloWorld.java.txt |   5 +
:  .../test-files/magic/HelloWorldJavaClass.class.bin | Bin 0 -> 426 bytes
:  solr/core/src/test-files/magic/README.md           |  29 ++++
:  solr/core/src/test-files/magic/hello.tar.bin       | Bin 0 -> 4096 bytes
:  solr/core/src/test-files/magic/plain.txt           |   1 +
:  solr/core/src/test-files/magic/shell.sh.txt        |   2 +
:  .../org/apache/solr/cloud/TestConfigSetsAPI.java   | 141 +++++++++++------
:  .../apache/solr/util/FileTypeMagicUtilTest.java    |  54 +++++++
:  solr/licenses/simplemagic-1.17.jar.sha1            |   1 +
:  solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt     |  15 ++
:  solr/licenses/simplemagic-NOTICE.txt               |   0
:  .../solr/common/cloud/ZkMaintenanceUtils.java      |   2 +
:  versions.lock                                      |   1 +
:  versions.props                                     |   1 +
:  23 files changed, 522 insertions(+), 56 deletions(-)
: 
: diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
: index 40da8c435ac..2fd94304a24 100644
: --- a/solr/CHANGES.txt
: +++ b/solr/CHANGES.txt
: @@ -169,6 +169,8 @@ Other Changes
:  * SOLR-17091: dev tools script cloud.sh became broken after changes in 9.3 added a new -slim.tgz file it was not expecting
:    cloud.sh has been updated to ignore the -slim.tgz version of the tarball.
:  
: +* SOLR-16949: Restrict certain file types from being uploaded to or downloaded from Config Sets (janhoy, Houston Putman)
: +
:  ==================  9.4.0 ==================
:  New Features
:  ---------------------
: diff --git a/solr/core/build.gradle b/solr/core/build.gradle
: index 61ecd1713af..ed2c8a370ae 100644
: --- a/solr/core/build.gradle
: +++ b/solr/core/build.gradle
: @@ -159,6 +159,8 @@ dependencies {
:  
:    compileOnly 'com.github.stephenc.jcip:jcip-annotations'
:  
: +  implementation 'com.j256.simplemagic:simplemagic'
: +
:    // -- Test Dependencies
:  
:    testRuntimeOnly 'org.slf4j:jcl-over-slf4j'
: diff --git a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
: index 5fd4a538bd7..6576742a195 100644
: --- a/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
: +++ b/solr/core/src/java/org/apache/solr/cli/ConfigSetUploadTool.java
: @@ -27,6 +27,7 @@ import org.apache.solr.client.solrj.impl.SolrZkClientTimeout;
:  import org.apache.solr.common.cloud.SolrZkClient;
:  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
:  import org.apache.solr.core.ConfigSetService;
: +import org.apache.solr.util.FileTypeMagicUtil;
:  import org.slf4j.Logger;
:  import org.slf4j.LoggerFactory;
:  
: @@ -101,6 +102,7 @@ public class ConfigSetUploadTool extends ToolBase {
:                + cli.getOptionValue("confname")
:                + " to ZooKeeper at "
:                + zkHost);
: +      FileTypeMagicUtil.assertConfigSetFolderLegal(confPath);
:        ZkMaintenanceUtils.uploadToZK(
:            zkClient,
:            confPath,
: diff --git a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
: index f02404d636d..9abde098e1c 100644
: --- a/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
: +++ b/solr/core/src/java/org/apache/solr/cloud/ZkConfigSetService.java
: @@ -22,6 +22,7 @@ import java.nio.file.Path;
:  import java.util.ArrayList;
:  import java.util.Collections;
:  import java.util.List;
: +import java.util.Locale;
:  import java.util.Map;
:  import java.util.Objects;
:  import org.apache.solr.client.solrj.cloud.SolrCloudManager;
: @@ -39,6 +40,7 @@ import org.apache.solr.core.CoreContainer;
:  import org.apache.solr.core.CoreDescriptor;
:  import org.apache.solr.core.SolrConfig;
:  import org.apache.solr.core.SolrResourceLoader;
: +import org.apache.solr.util.FileTypeMagicUtil;
:  import org.apache.zookeeper.CreateMode;
:  import org.apache.zookeeper.KeeperException;
:  import org.apache.zookeeper.data.Stat;
: @@ -199,6 +201,15 @@ public class ZkConfigSetService extends ConfigSetService {
:      try {
:        if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
:          log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
: +      } else if (FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
: +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
: +        throw new SolrException(
: +            SolrException.ErrorCode.BAD_REQUEST,
: +            String.format(
: +                Locale.ROOT,
: +                "Not uploading file %s to config, as it matched the MAGIC signature of a forbidden mime type %s",
: +                fileName,
: +                mimeType));
:        } else {
:          // if overwriteOnExists is true then zkClient#makePath failOnExists is set to false
:          zkClient.makePath(filePath, data, CreateMode.PERSISTENT, null, !overwriteOnExists, true);
: @@ -340,7 +351,15 @@ public class ZkConfigSetService extends ConfigSetService {
:      } else {
:        log.debug("Copying zk node {} to {}", fromZkFilePath, toZkFilePath);
:        byte[] data = zkClient.getData(fromZkFilePath, null, null, true);
: -      zkClient.makePath(toZkFilePath, data, true);
: +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
: +        zkClient.makePath(toZkFilePath, data, true);
: +      } else {
: +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
: +        log.warn(
: +            "Skipping copy of file {} in ZK, as it matched the MAGIC signature of a forbidden mime type {}",
: +            fromZkFilePath,
: +            mimeType);
: +      }
:      }
:    }
:  
: diff --git a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
: index 1f1a42b15e1..4b041252211 100644
: --- a/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
: +++ b/solr/core/src/java/org/apache/solr/core/FileSystemConfigSetService.java
: @@ -37,6 +37,7 @@ import java.util.stream.Stream;
:  import org.apache.solr.common.SolrException;
:  import org.apache.solr.common.cloud.ZkMaintenanceUtils;
:  import org.apache.solr.common.util.Utils;
: +import org.apache.solr.util.FileTypeMagicUtil;
:  import org.slf4j.Logger;
:  import org.slf4j.LoggerFactory;
:  
: @@ -150,9 +151,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
:      if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fileName)) {
:        log.warn("Not including uploading file to config, as it is a forbidden type: {}", fileName);
:      } else {
: -      Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
: -      if (!Files.exists(filePath) || overwriteOnExists) {
: -        Files.write(filePath, data);
: +      if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
: +        Path filePath = getConfigDir(configName).resolve(normalizePathToOsSeparator(fileName));
: +        if (!Files.exists(filePath) || overwriteOnExists) {
: +          Files.write(filePath, data);
: +        }
: +      } else {
: +        String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
: +        log.warn(
: +            "Not including uploading file {}, as it matched the MAGIC signature of a forbidden mime type {}",
: +            fileName,
: +            mimeType);
:        }
:      }
:    }
: @@ -205,8 +214,17 @@ public class FileSystemConfigSetService extends ConfigSetService {
:                      "Not including uploading file to config, as it is a forbidden type: {}",
:                      file.getFileName());
:                } else {
: -                Files.copy(
: -                    file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
: +                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(Files.newInputStream(file))) {
: +                  Files.copy(
: +                      file, target.resolve(source.relativize(file).toString()), REPLACE_EXISTING);
: +                } else {
: +                  String mimeType =
: +                      FileTypeMagicUtil.INSTANCE.guessMimeType(Files.newInputStream(file));
: +                  log.warn(
: +                      "Not copying file {}, as it matched the MAGIC signature of a forbidden mime type {}",
: +                      file.getFileName(),
: +                      mimeType);
: +                }
:                }
:                return FileVisitResult.CONTINUE;
:              }
: diff --git a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
: index be6a1a83c2f..8ff78b27e08 100644
: --- a/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
: +++ b/solr/core/src/java/org/apache/solr/core/backup/BackupManager.java
: @@ -40,6 +40,7 @@ import org.apache.solr.common.cloud.ZkStateReader;
:  import org.apache.solr.common.util.Utils;
:  import org.apache.solr.core.ConfigSetService;
:  import org.apache.solr.core.backup.repository.BackupRepository;
: +import org.apache.solr.util.FileTypeMagicUtil;
:  import org.apache.zookeeper.CreateMode;
:  import org.apache.zookeeper.KeeperException;
:  import org.slf4j.Logger;
: @@ -349,8 +350,16 @@ public class BackupManager {
:            if (data == null) {
:              data = new byte[0];
:            }
: -          try (OutputStream os = repository.createOutput(uri)) {
: -            os.write(data);
: +          if (!FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
: +            try (OutputStream os = repository.createOutput(uri)) {
: +              os.write(data);
: +            }
: +          } else {
: +            String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(data);
: +            log.warn(
: +                "Not including zookeeper file {} in backup, as it matched the MAGIC signature of a forbidden mime type {}",
: +                filePath,
: +                mimeType);
:            }
:          }
:        } else {
: @@ -379,7 +388,15 @@ public class BackupManager {
:                  // probably ok since the config file should be small.
:                  byte[] arr = new byte[(int) is.length()];
:                  is.readBytes(arr, 0, (int) is.length());
: -                configSetService.uploadFileToConfig(configName, filePath, arr, false);
: +                if (!FileTypeMagicUtil.isFileForbiddenInConfigset(arr)) {
: +                  configSetService.uploadFileToConfig(configName, filePath, arr, false);
: +                } else {
: +                  String mimeType = FileTypeMagicUtil.INSTANCE.guessMimeType(arr);
: +                  log.warn(
: +                      "Not including zookeeper file {} in restore, as it matched the MAGIC signature of a forbidden mime type {}",
: +                      filePath,
: +                      mimeType);
: +                }
:                }
:              }
:              break;
: diff --git a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
: index 98889aff563..2380a79a92b 100644
: --- a/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
: +++ b/solr/core/src/java/org/apache/solr/handler/configsets/UploadConfigSetFileAPI.java
: @@ -27,6 +27,7 @@ import org.apache.solr.common.params.ConfigSetParams;
:  import org.apache.solr.core.CoreContainer;
:  import org.apache.solr.request.SolrQueryRequest;
:  import org.apache.solr.response.SolrQueryResponse;
: +import org.apache.solr.util.FileTypeMagicUtil;
:  
:  /**
:   * V2 API for adding or updating a single file within a configset.
: @@ -67,11 +68,13 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
:      if (fixedSingleFilePath.charAt(0) == '/') {
:        fixedSingleFilePath = fixedSingleFilePath.substring(1);
:      }
: +    byte[] data = inputStream.readAllBytes();
:      if (fixedSingleFilePath.isEmpty()) {
:        throw new SolrException(
:            SolrException.ErrorCode.BAD_REQUEST,
:            "The file path provided for upload, '" + singleFilePath + "', is not valid.");
: -    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)) {
: +    } else if (ZkMaintenanceUtils.isFileForbiddenInConfigSets(fixedSingleFilePath)
: +        || FileTypeMagicUtil.isFileForbiddenInConfigset(data)) {
:        throw new SolrException(
:            SolrException.ErrorCode.BAD_REQUEST,
:            "The file type provided for upload, '"
: @@ -87,8 +90,7 @@ public class UploadConfigSetFileAPI extends ConfigSetAPIBase {
:        // For creating the baseNode, the cleanup parameter is only allowed to be true when
:        // singleFilePath is not passed.
:        createBaseNode(configSetService, overwritesExisting, requestIsTrusted, configSetName);
: -      configSetService.uploadFileToConfig(
: -          configSetName, fixedSingleFilePath, inputStream.readAllBytes(), allowOverwrite);
: +      configSetService.uploadFileToConfig(configSetName, fixedSingleFilePath, data, allowOverwrite);
:      }
:    }
:  }
: diff --git a/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
: new file mode 100644
: index 00000000000..cfb6c9fa0af
: --- /dev/null
: +++ b/solr/core/src/java/org/apache/solr/util/FileTypeMagicUtil.java
: @@ -0,0 +1,166 @@
: +/*
: + * Licensed to the Apache Software Foundation (ASF) under one or more
: + * contributor license agreements.  See the NOTICE file distributed with
: + * this work for additional information regarding copyright ownership.
: + * The ASF 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.
: + */
: +
: +package org.apache.solr.util;
: +
: +import com.j256.simplemagic.ContentInfo;
: +import com.j256.simplemagic.ContentInfoUtil;
: +import com.j256.simplemagic.ContentType;
: +import java.io.ByteArrayInputStream;
: +import java.io.IOException;
: +import java.io.InputStream;
: +import java.nio.file.FileVisitResult;
: +import java.nio.file.Files;
: +import java.nio.file.Path;
: +import java.nio.file.SimpleFileVisitor;
: +import java.nio.file.attribute.BasicFileAttributes;
: +import java.util.Arrays;
: +import java.util.HashSet;
: +import java.util.Locale;
: +import java.util.Set;
: +import org.apache.solr.common.SolrException;
: +
: +/** Utility class to guess the mime type of file based on its magic number. */
: +public class FileTypeMagicUtil implements ContentInfoUtil.ErrorCallBack {
: +  private final ContentInfoUtil util;
: +  private static final Set<String> SKIP_FOLDERS = new HashSet<>(Arrays.asList(".", ".."));
: +
: +  public static FileTypeMagicUtil INSTANCE = new FileTypeMagicUtil();
: +
: +  FileTypeMagicUtil() {
: +    try {
: +      util = new ContentInfoUtil("/magic/executables", this);
: +    } catch (IOException e) {
: +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error parsing magic file", e);
: +    }
: +  }
: +
: +  /**
: +   * Asserts that an entire configset folder is legal to upload.
: +   *
: +   * @param confPath the path to the folder
: +   * @throws SolrException if an illegal file is found in the folder structure
: +   */
: +  public static void assertConfigSetFolderLegal(Path confPath) throws IOException {
: +    Files.walkFileTree(
: +        confPath,
: +        new SimpleFileVisitor<Path>() {
: +          @Override
: +          public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
: +              throws IOException {
: +            // Read first 100 bytes of the file to determine the mime type
: +            try (InputStream fileStream = Files.newInputStream(file)) {
: +              byte[] bytes = new byte[100];
: +              fileStream.read(bytes);
: +              if (FileTypeMagicUtil.isFileForbiddenInConfigset(bytes)) {
: +                throw new SolrException(
: +                    SolrException.ErrorCode.BAD_REQUEST,
: +                    String.format(
: +                        Locale.ROOT,
: +                        "Not uploading file %s to configset, as it matched the MAGIC signature of a forbidden mime type %s",
: +                        file,
: +                        FileTypeMagicUtil.INSTANCE.guessMimeType(bytes)));
: +              }
: +              return FileVisitResult.CONTINUE;
: +            }
: +          }
: +
: +          @Override
: +          public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
: +              throws IOException {
: +            if (SKIP_FOLDERS.contains(dir.getFileName().toString()))
: +              return FileVisitResult.SKIP_SUBTREE;
: +
: +            return FileVisitResult.CONTINUE;
: +          }
: +        });
: +  }
: +
: +  /**
: +   * Guess the mime type of file based on its magic number.
: +   *
: +   * @param stream input stream of the file
: +   * @return string with content-type or "application/octet-stream" if unknown
: +   */
: +  public String guessMimeType(InputStream stream) {
: +    try {
: +      ContentInfo info = util.findMatch(stream);
: +      if (info == null) {
: +        return ContentType.OTHER.getMimeType();
: +      }
: +      return info.getContentType().getMimeType();
: +    } catch (IOException e) {
: +      throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
: +    }
: +  }
: +
: +  /**
: +   * Guess the mime type of file bytes based on its magic number.
: +   *
: +   * @param bytes the first bytes at start of the file
: +   * @return string with content-type or "application/octet-stream" if unknown
: +   */
: +  public String guessMimeType(byte[] bytes) {
: +    return guessMimeType(new ByteArrayInputStream(bytes));
: +  }
: +
: +  @Override
: +  public void error(String line, String details, Exception e) {
: +    throw new SolrException(
: +        SolrException.ErrorCode.SERVER_ERROR,
: +        String.format(Locale.ROOT, "%s: %s", line, details),
: +        e);
: +  }
: +
: +  /**
: +   * Determine forbidden file type based on magic bytes matching of the file itself. Forbidden types
: +   * are:
: +   *
: +   * <ul>
: +   *   <li><code>application/x-java-applet</code>: java class file
: +   *   <li><code>application/zip</code>: jar or zip archives
: +   *   <li><code>application/x-tar</code>: tar archives
: +   *   <li><code>text/x-shellscript</code>: shell or bash script
: +   * </ul>
: +   *
: +   * @param fileStream stream from the file content
: +   * @return true if file is among the forbidden mime-types
: +   */
: +  public static boolean isFileForbiddenInConfigset(InputStream fileStream) {
: +    return forbiddenTypes.contains(FileTypeMagicUtil.INSTANCE.guessMimeType(fileStream));
: +  }
: +
: +  /**
: +   * Determine forbidden file type based on magic bytes matching of the first bytes of the file.
: +   *
: +   * @param bytes byte array of the file content
: +   * @return true if file is among the forbidden mime-types
: +   */
: +  public static boolean isFileForbiddenInConfigset(byte[] bytes) {
: +    if (bytes == null || bytes.length == 0)
: +      return false; // A ZK znode may be a folder with no content
: +    return isFileForbiddenInConfigset(new ByteArrayInputStream(bytes));
: +  }
: +
: +  private static final Set<String> forbiddenTypes =
: +      new HashSet<>(
: +          Arrays.asList(
: +              System.getProperty(
: +                      "solr.configset.upload.mimetypes.forbidden",
: +                      "application/x-java-applet,application/zip,application/x-tar,text/x-shellscript")
: +                  .split(",")));
: +}
: diff --git a/solr/core/src/resources/magic/executables b/solr/core/src/resources/magic/executables
: new file mode 100644
: index 00000000000..04094eaf797
: --- /dev/null
: +++ b/solr/core/src/resources/magic/executables
: @@ -0,0 +1,74 @@
: +#  Licensed to the Apache Software Foundation (ASF) under one or more
: +#  contributor license agreements.  See the NOTICE file distributed with
: +#  this work for additional information regarding copyright ownership.
: +#  The ASF 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.
: +
: +# POSIX tar archives
: +# URL: https://en.wikipedia.org/wiki/Tar_(computing)
: +# Reference: https://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5&manpath=FreeBSD+8-current
: +# header mainly padded with nul bytes
: +500	quad		0
: +!:strength /2
: +# filename or extended attribute printable strings in range space null til umlaut ue
: +>0	ubeshort	>0x1F00
: +>>0	ubeshort	<0xFCFD
: +# last 4 header bytes often null but tar\0 in gtarfail2.tar gtarfail.tar-bad
: +# at https://sourceforge.net/projects/s-tar/files/testscripts/
: +>>>508	ubelong&0x8B9E8DFF	0
: +# nul, space or ascii digit 0-7 at start of mode
: +>>>>100	ubyte&0xC8	=0
: +>>>>>101 ubyte&0xC8	=0
: +# nul, space at end of check sum
: +>>>>>>155 ubyte&0xDF	=0
: +# space or ascii digit 0 at start of check sum
: +>>>>>>>148	ubyte&0xEF	=0x20
: +# check for specific 1st member name that indicates other mime type and file name suffix
: +>>>>>>>>0	string		TpmEmuTpms/permall
: +!:mime	application/x-tar
: +!:ext	tar
: +# other stuff in padding
: +# some implementations add new fields to the blank area at the end of the header record
: +# created for example by DOS TAR 3.20g 1994 Tim V.Shapore with -j option
: +>>257	ulong		!0		tar archive (old)
: +!:mime	application/x-tar
: +!:ext	tar
: +# magic in newer, GNU, posix variants
: +>257	string		=ustar
: +# 2 last char of magic and UStar version because string expression does not work
: +# 2 space characters followed by a null for GNU variant
: +>>261	ubelong		=0x72202000	POSIX tar archive (GNU)
: +!:mime	application/x-gtar
: +!:ext	tar/gtar
: +
: +
: +# Zip archives (Greg Roelofs, c/o zip-bugs@wkuvx1.wku.edu)
: +0	string		PK\005\006	Zip archive data (empty)
: +0	string		PK\003\004  Zip archive data
: +!:strength +1
: +!:mime application/zip
: +!:ext zip/cbz
: +
: +
: +# JAVA
: +0	belong		0xcafebabe
: +>4	ubelong		>30		compiled Java class data,
: +!:mime	application/x-java-applet
: +#!:mime	application/java-byte-code
: +!:ext	class
: +
: +
: +# SHELL scripts
: +#0	string/w	:			shell archive or script for antique kernel text
: +0	regex	\^#!\\s?(/bin/|/usr/)		POSIX shell script text executable
: +!:mime	text/x-shellscript
: +!:ext	sh/bash
: \ No newline at end of file
: diff --git a/solr/core/src/test-files/magic/HelloWorld.java.txt b/solr/core/src/test-files/magic/HelloWorld.java.txt
: new file mode 100644
: index 00000000000..ca9518d2afa
: --- /dev/null
: +++ b/solr/core/src/test-files/magic/HelloWorld.java.txt
: @@ -0,0 +1,5 @@
: +class HelloWorld {
: +  public static void main(String[] args) {
: +    System.out.println("Hellow world");
: +  }
: +}
: \ No newline at end of file
: diff --git a/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin
: new file mode 100644
: index 00000000000..e15d0a6c5b9
: Binary files /dev/null and b/solr/core/src/test-files/magic/HelloWorldJavaClass.class.bin differ
: diff --git a/solr/core/src/test-files/magic/README.md b/solr/core/src/test-files/magic/README.md
: new file mode 100644
: index 00000000000..6e499a2f711
: --- /dev/null
: +++ b/solr/core/src/test-files/magic/README.md
: @@ -0,0 +1,29 @@
: +<!--
: +    Licensed to the Apache Software Foundation (ASF) under one or more
: +    contributor license agreements.  See the NOTICE file distributed with
: +    this work for additional information regarding copyright ownership.
: +    The ASF 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.
: + -->
: +
: +The two binary files were created by the following commands:
: +
: +```bash
: +echo "Hello" > hello.txt && \
: +  tar -cvf hello.tar.bin hello.txt && \
: +  rm hello.txt
: +
: +cp HelloWorld.java.txt HelloWorld.java && \
: +  javac HelloWorld.java && \
: +  mv HelloWorld.class HelloWorldJavaClass.class.bin && \
: +  rm HelloWorld.java
: +```
: \ No newline at end of file
: diff --git a/solr/core/src/test-files/magic/hello.tar.bin b/solr/core/src/test-files/magic/hello.tar.bin
: new file mode 100644
: index 00000000000..68ca23c362a
: Binary files /dev/null and b/solr/core/src/test-files/magic/hello.tar.bin differ
: diff --git a/solr/core/src/test-files/magic/plain.txt b/solr/core/src/test-files/magic/plain.txt
: new file mode 100644
: index 00000000000..70c379b63ff
: --- /dev/null
: +++ b/solr/core/src/test-files/magic/plain.txt
: @@ -0,0 +1 @@
: +Hello world
: \ No newline at end of file
: diff --git a/solr/core/src/test-files/magic/shell.sh.txt b/solr/core/src/test-files/magic/shell.sh.txt
: new file mode 100644
: index 00000000000..9ea411e111d
: --- /dev/null
: +++ b/solr/core/src/test-files/magic/shell.sh.txt
: @@ -0,0 +1,2 @@
: +#! /usr/bin/env bash
: +echo Hello
: \ No newline at end of file
: diff --git a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
: index 1da60d85ff9..f7c9431c296 100644
: --- a/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
: +++ b/solr/core/src/test/org/apache/solr/cloud/TestConfigSetsAPI.java
: @@ -45,6 +45,7 @@ import java.util.LinkedHashMap;
:  import java.util.List;
:  import java.util.Locale;
:  import java.util.Map;
: +import java.util.Objects;
:  import java.util.Properties;
:  import java.util.Set;
:  import java.util.concurrent.TimeUnit;
: @@ -592,14 +593,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:        assertEquals(
:            "Can't overwrite an existing configset unless the overwrite parameter is set",
:            400,
: -          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false));
: +          uploadConfigSet(configsetName, configsetSuffix, null, false, false, v2, false, false));
:        unIgnoreException("The configuration regulartestOverwrite-1 already exists in zookeeper");
:        assertEquals(
:            "Expecting version to remain equal",
:            solrconfigZkVersion,
:            getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml"));
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
: +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -638,13 +639,14 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:          zkClient.makePath(f, true);
:        }
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
: +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
:        for (String f : extraFiles) {
:          assertTrue(
:              "Expecting file " + f + " to exist in ConfigSet but it's gone",
:              zkClient.exists(f, true));
:        }
: -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
: +      assertEquals(
: +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
:        for (String f : extraFiles) {
:          assertFalse(
:              "Expecting file " + f + " to be deleted from ConfigSet but it wasn't",
: @@ -675,7 +677,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:              .withConnTimeOut(45000, TimeUnit.MILLISECONDS)
:              .build()) {
:        String configPath = "/configs/" + configsetName + configsetSuffix;
: -      assertEquals(0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true));
: +      assertEquals(
: +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, true, false));
:        for (String fileEnding : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
:          String f = configPath + "/test." + fileEnding;
:          assertFalse(
: @@ -710,7 +713,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:            getConfigZNodeVersion(zkClient, configsetName, configsetSuffix, "solrconfig.xml");
:        // Was untrusted, overwrite with untrusted
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
: +          0, uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -721,7 +724,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:  
:        // Was untrusted, overwrite with trusted but no cleanup
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
: +          0,
: +          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -747,7 +751,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:  
:        // Was untrusted, overwrite with trusted with cleanup
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
: +          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -761,7 +765,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:        assertEquals(
:            "Can't upload a trusted configset with an untrusted request",
:            400,
: -          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false));
: +          uploadConfigSet(configsetName, configsetSuffix, null, true, false, v2, false, false));
:        assertEquals(
:            "Expecting version to remain equal",
:            solrconfigZkVersion,
: @@ -773,7 +777,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:        assertEquals(
:            "Can't upload a trusted configset with an untrusted request",
:            400,
: -          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false));
: +          uploadConfigSet(configsetName, configsetSuffix, null, true, true, v2, false, false));
:        assertEquals(
:            "Expecting version to remain equal",
:            solrconfigZkVersion,
: @@ -783,7 +787,8 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:  
:        // Was trusted, overwrite with trusted no cleanup
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false));
: +          0,
: +          uploadConfigSet(configsetName, configsetSuffix, "solr", true, false, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -794,7 +799,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:  
:        // Was trusted, overwrite with trusted with cleanup
:        assertEquals(
: -          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false));
: +          0, uploadConfigSet(configsetName, configsetSuffix, "solr", true, true, v2, false, false));
:        assertTrue(
:            "Expecting version bump",
:            solrconfigZkVersion
: @@ -1457,6 +1462,13 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:              .get("id"));
:    }
:  
: +  @Test
: +  public void testUploadWithForbiddenContent() throws Exception {
: +    // Uploads a config set containing a script, a class file and jar file, will return 400 error
: +    long res = uploadConfigSet("forbidden", "suffix", "foo", true, false, true, false, true);
: +    assertEquals(400, res);
: +  }
: +
:    private static String getSecurityJson() {
:      return "{\n"
:          + "  'authentication':{\n"
: @@ -1511,7 +1523,7 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:        String configSetName, String suffix, String username, SolrZkClient zkClient, boolean v2)
:        throws IOException {
:      assertFalse(getConfigSetService().checkConfigExists(configSetName + suffix));
: -    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false);
: +    return uploadConfigSet(configSetName, suffix, username, false, false, v2, false, false);
:    }
:  
:    private long uploadConfigSet(
: @@ -1521,21 +1533,25 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:        boolean overwrite,
:        boolean cleanup,
:        boolean v2,
: -      boolean forbiddenTypes)
: +      boolean forbiddenTypes,
: +      boolean forbiddenContent)
:        throws IOException {
:  
: +    File zipFile;
: +    if (forbiddenTypes) {
: +      log.info("Uploading configset with forbidden file endings");
: +      zipFile =
: +          createTempZipFileWithForbiddenTypes(
: +              "solr/configsets/upload/" + configSetName + "/solrconfig.xml");
: +    } else if (forbiddenContent) {
: +      log.info("Uploading configset with forbidden file content");
: +      zipFile = createTempZipFileWithForbiddenContent("magic");
: +    } else {
: +      zipFile = createTempZipFile("solr/configsets/upload/" + configSetName);
: +    }
: +
:      // Read zipped sample config
: -    return uploadGivenConfigSet(
: -        forbiddenTypes
: -            ? createTempZipFileWithForbiddenTypes(
: -                "solr/configsets/upload/" + configSetName + "/solrconfig.xml")
: -            : createTempZipFile("solr/configsets/upload/" + configSetName),
: -        configSetName,
: -        suffix,
: -        username,
: -        overwrite,
: -        cleanup,
: -        v2);
: +    return uploadGivenConfigSet(zipFile, configSetName, suffix, username, overwrite, cleanup, v2);
:    }
:  
:    private long uploadBadConfigSet(String configSetName, String suffix, String username, boolean v2)
: @@ -1702,31 +1718,68 @@ public class TestConfigSetsAPI extends SolrCloudTestCase {
:      }
:    }
:  
: -  private static void zipWithForbiddenEndings(File file, File zipfile) throws IOException {
: -    OutputStream out = new FileOutputStream(zipfile);
: -    ZipOutputStream zout = new ZipOutputStream(out);
: +  /** Create a zip file (in the temp directory) containing files with forbidden content */
: +  private File createTempZipFileWithForbiddenContent(String resourcePath) {
:      try {
: -      for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
: -        zout.putNextEntry(new ZipEntry("test." + fileType));
: +      final File zipFile = createTempFile("configset", "zip").toFile();
: +      final File directory = SolrTestCaseJ4.getFile(resourcePath);
: +      if (log.isInfoEnabled()) {
: +        log.info("Directory: {}", directory.getAbsolutePath());
: +      }
: +      zipWithForbiddenContent(directory, zipFile);
: +      if (log.isInfoEnabled()) {
: +        log.info("Zipfile: {}", zipFile.getAbsolutePath());
: +      }
: +      return zipFile;
: +    } catch (IOException e) {
: +      throw new RuntimeException(e);
: +    }
: +  }
:  
: -        InputStream in = new FileInputStream(file);
: -        try {
: -          byte[] buffer = new byte[1024];
: -          while (true) {
: -            int readCount = in.read(buffer);
: -            if (readCount < 0) {
: -              break;
: +  private static void zipWithForbiddenContent(File directory, File zipfile) throws IOException {
: +    OutputStream out = Files.newOutputStream(zipfile.toPath());
: +    assertTrue(directory.isDirectory());
: +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
: +      // Copy in all files from the directory
: +      for (File file : Objects.requireNonNull(directory.listFiles())) {
: +        zout.putNextEntry(new ZipEntry(file.getName()));
: +        zout.write(Files.readAllBytes(file.toPath()));
: +        zout.closeEntry();
: +      }
: +    }
: +  }
: +
: +  private static void zipWithForbiddenEndings(File fileOrDirectory, File zipfile)
: +      throws IOException {
: +    OutputStream out = new FileOutputStream(zipfile);
: +    try (ZipOutputStream zout = new ZipOutputStream(out)) {
: +      if (fileOrDirectory.isFile()) {
: +        // Create entries with given file, one for each forbidden endding
: +        for (String fileType : ZkMaintenanceUtils.DEFAULT_FORBIDDEN_FILE_TYPES) {
: +          zout.putNextEntry(new ZipEntry("test." + fileType));
: +
: +          try (InputStream in = new FileInputStream(fileOrDirectory)) {
: +            byte[] buffer = new byte[1024];
: +            while (true) {
: +              int readCount = in.read(buffer);
: +              if (readCount < 0) {
: +                break;
: +              }
: +              zout.write(buffer, 0, readCount);
:              }
: -            zout.write(buffer, 0, readCount);
:            }
: -        } finally {
: -          in.close();
: -        }
:  
: -        zout.closeEntry();
: +          zout.closeEntry();
: +        }
: +      }
: +      if (fileOrDirectory.isDirectory()) {
: +        // Copy in all files from the directory
: +        for (File file : Objects.requireNonNull(fileOrDirectory.listFiles())) {
: +          zout.putNextEntry(new ZipEntry(file.getName()));
: +          zout.write(Files.readAllBytes(file.toPath()));
: +          zout.closeEntry();
: +        }
:        }
: -    } finally {
: -      zout.close();
:      }
:    }
:  
: diff --git a/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
: new file mode 100644
: index 00000000000..b8e9a35a3d9
: --- /dev/null
: +++ b/solr/core/src/test/org/apache/solr/util/FileTypeMagicUtilTest.java
: @@ -0,0 +1,54 @@
: +/*
: + * Licensed to the Apache Software Foundation (ASF) under one or more
: + * contributor license agreements.  See the NOTICE file distributed with
: + * this work for additional information regarding copyright ownership.
: + * The ASF 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.
: + */
: +
: +package org.apache.solr.util;
: +
: +import org.apache.solr.SolrTestCaseJ4;
: +
: +public class FileTypeMagicUtilTest extends SolrTestCaseJ4 {
: +  public void testGuessMimeType() {
: +    assertEquals(
: +        "application/x-java-applet",
: +        FileTypeMagicUtil.INSTANCE.guessMimeType(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
: +    assertEquals(
: +        "application/zip",
: +        FileTypeMagicUtil.INSTANCE.guessMimeType(
: +            FileTypeMagicUtil.class.getResourceAsStream(
: +                "/runtimecode/containerplugin.v.1.jar.bin")));
: +    assertEquals(
: +        "application/x-tar",
: +        FileTypeMagicUtil.INSTANCE.guessMimeType(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/hello.tar.bin")));
: +    assertEquals(
: +        "text/x-shellscript",
: +        FileTypeMagicUtil.INSTANCE.guessMimeType(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
: +  }
: +
: +  public void testIsFileForbiddenInConfigset() {
: +    assertTrue(
: +        FileTypeMagicUtil.isFileForbiddenInConfigset(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/HelloWorldJavaClass.class.bin")));
: +    assertTrue(
: +        FileTypeMagicUtil.isFileForbiddenInConfigset(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/shell.sh.txt")));
: +    assertFalse(
: +        FileTypeMagicUtil.isFileForbiddenInConfigset(
: +            FileTypeMagicUtil.class.getResourceAsStream("/magic/plain.txt")));
: +  }
: +}
: diff --git a/solr/licenses/simplemagic-1.17.jar.sha1 b/solr/licenses/simplemagic-1.17.jar.sha1
: new file mode 100644
: index 00000000000..cf101094cc8
: --- /dev/null
: +++ b/solr/licenses/simplemagic-1.17.jar.sha1
: @@ -0,0 +1 @@
: +b6e2d1e47d7172e57fa858a2e3940c09a590e61e
: diff --git a/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
: new file mode 100644
: index 00000000000..9228230f933
: --- /dev/null
: +++ b/solr/licenses/simplemagic-LICENSE-BSD_LIKE.txt
: @@ -0,0 +1,15 @@
: +ISC License (https://opensource.org/licenses/ISC)
: +
: +Copyright 2021, Gray Watson
: +
: +Permission to use, copy, modify, and/or distribute this software for any
: +purpose with or without fee is hereby granted, provided that the above
: +copyright notice and this permission notice appear in all copies.
: +
: +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
: +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
: +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
: +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
: +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
: +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
: +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
: \ No newline at end of file
: diff --git a/solr/licenses/simplemagic-NOTICE.txt b/solr/licenses/simplemagic-NOTICE.txt
: new file mode 100644
: index 00000000000..e69de29bb2d
: diff --git a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
: index d571339880c..e40294a6683 100644
: --- a/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
: +++ b/solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/ZkMaintenanceUtils.java
: @@ -348,6 +348,7 @@ public class ZkMaintenanceUtils {
:                    USE_FORBIDDEN_FILE_TYPES);
:                return FileVisitResult.CONTINUE;
:              }
: +            // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
:              String zkNode = createZkNodeName(zkPath, rootPath, file);
:              try {
:                // if the path exists (and presumably we're uploading data to it) just set its data
: @@ -437,6 +438,7 @@ public class ZkMaintenanceUtils {
:          if (isFileForbiddenInConfigSets(zkPath)) {
:            log.warn("Skipping download of file from ZK, as it is a forbidden type: {}", zkPath);
:          } else {
: +          // TODO: Cannot check MAGIC header for file since FileTypeGuesser is in core
:            if (copyDataDown(zkClient, zkPath, file) == 0) {
:              Files.createFile(file);
:            }
: diff --git a/versions.lock b/versions.lock
: index 9c0f9ef53d4..6b6ea467e0d 100644
: --- a/versions.lock
: +++ b/versions.lock
: @@ -62,6 +62,7 @@ com.googlecode.plist:dd-plist:1.24 (1 constraints: 300c84f5)
:  com.healthmarketscience.jackcess:jackcess:4.0.2 (1 constraints: 5d0cf201)
:  com.healthmarketscience.jackcess:jackcess-encrypt:4.0.1 (1 constraints: 5c0cf101)
:  com.ibm.icu:icu4j:70.1 (1 constraints: a90f1784)
: +com.j256.simplemagic:simplemagic:1.17 (1 constraints: dd04f830)
:  com.jayway.jsonpath:json-path:2.8.0 (2 constraints: 6c12952c)
:  com.lmax:disruptor:3.4.4 (1 constraints: 0d050a36)
:  com.mchange:c3p0:0.9.5.5 (1 constraints: c80c571b)
: diff --git a/versions.props b/versions.props
: index 10b583c43e2..cfa127e1094 100644
: --- a/versions.props
: +++ b/versions.props
: @@ -13,6 +13,7 @@ com.google.cloud:google-cloud-bom=0.204.0
:  com.google.errorprone:*=2.23.0
:  com.google.guava:guava=32.1.3-jre
:  com.google.re2j:re2j=1.7
: +com.j256.simplemagic:simplemagic=1.17
:  com.jayway.jsonpath:json-path=2.8.0
:  com.lmax:disruptor=3.4.4
:  com.tdunning:t-digest=3.1
: 
: 

-Hoss