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The following commit(s) were added to refs/heads/master by this push:
new 483b83ca62 Sign file upload resource constraints
483b83ca62 is described below
commit 483b83ca62a606ae4a9fd3ad01c93691105acf5c
Author: mundur <[email protected]>
AuthorDate: Tue Jul 14 22:46:09 2026 +0800
Sign file upload resource constraints
---
...loadToResourceFieldSecurityTest$UploadPage.html | 5 +
.../FileUploadToResourceFieldSecurityTest.java | 188 +++++++++++++++++++++
.../resource/AbstractFileUploadResource.java | 71 +++++++-
.../upload/resource/FileUploadToResourceField.java | 2 +
.../upload/resource/FileUploadToResourceField.js | 9 +-
5 files changed, 268 insertions(+), 7 deletions(-)
diff --git
a/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest$UploadPage.html
b/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest$UploadPage.html
new file mode 100644
index 0000000000..2658b563d3
--- /dev/null
+++
b/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest$UploadPage.html
@@ -0,0 +1,5 @@
+<html xmlns:wicket="http://wicket.apache.org";>
+<body>
+ <input type="file" wicket:id="upload"/>
+</body>
+</html>
diff --git
a/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest.java
b/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest.java
new file mode 100644
index 0000000000..0251ba071a
--- /dev/null
+++
b/wicket-core-tests/src/test/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceFieldSecurityTest.java
@@ -0,0 +1,188 @@
+/*
+ * 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.wicket.markup.html.form.upload.resource;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
+import java.util.List;
+import org.apache.wicket.ajax.AjaxRequestTarget;
+import org.apache.wicket.markup.html.WebPage;
+import org.apache.wicket.request.mapper.parameter.PageParameters;
+import org.apache.wicket.util.lang.Bytes;
+import org.apache.wicket.util.file.File;
+import org.apache.wicket.util.tester.WicketTestCase;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+
+class FileUploadToResourceFieldSecurityTest extends WicketTestCase
+{
+ private Path tempDir;
+
+ @AfterEach
+ void tearDown() throws IOException
+ {
+ if (tempDir != null)
+ {
+ try (var paths = Files.walk(tempDir))
+ {
+
paths.sorted(Comparator.reverseOrder()).forEach(path ->
+ {
+ try
+ {
+ Files.deleteIfExists(path);
+ }
+ catch (IOException e)
+ {
+ throw new RuntimeException(e);
+ }
+ });
+ }
+ }
+ }
+
+ @Test
+ void acceptsUploadWithRenderedLimits() throws Exception
+ {
+ FolderUploadsFileManager fileManager = newFileManager();
+ UploadPage page = new UploadPage(new
TestFileUploadResourceReference(fileManager));
+ tester.startPage(page);
+
+ File upload = createUploadFile("allowed.txt", 256);
+ submitUpload(page.field.buildUploadUrl(), upload);
+
+ File storedFile = fileManager.getFile(page.field.getMarkupId(),
upload.getName());
+ assertTrue(storedFile.exists());
+ assertEquals(upload.length(), storedFile.length());
+ }
+
+ @Test
+ void rejectsTamperedUploadLimits() throws Exception
+ {
+ FolderUploadsFileManager fileManager = newFileManager();
+ UploadPage page = new UploadPage(new
TestFileUploadResourceReference(fileManager));
+ tester.startPage(page);
+
+ File upload = createUploadFile("oversized.txt", 4096);
+ String validToken =
AbstractFileUploadResource.createUploadToken(page.field.getMarkupId(),
+ page.field.getMaxSize(), page.field.getFileMaxSize(),
page.field.getFileCountMax());
+ String tamperedUrl = page.field.getResourceUrl() + '?' +
+ AbstractFileUploadResource.UPLOAD_ID + '=' +
page.field.getMarkupId() + '&' +
+ AbstractFileUploadResource.MAX_SIZE + '=' +
Bytes.kilobytes(64).bytes() + '&' +
+ AbstractFileUploadResource.FILE_COUNT_MAX + '=' +
page.field.getFileCountMax() + '&' +
+ AbstractFileUploadResource.UPLOAD_TOKEN + '=' +
validToken;
+
+ submitUpload(tamperedUrl, upload);
+
+ File storedFile = fileManager.getFile(page.field.getMarkupId(),
upload.getName());
+ assertFalse(storedFile.exists());
+
assertTrue(tester.getLastResponseAsString().contains("uploadFailed"));
+ }
+
+ private FolderUploadsFileManager newFileManager() throws IOException
+ {
+ tempDir = Files.createTempDirectory("wicket-upload-security");
+ return new FolderUploadsFileManager(new File(tempDir.toFile()));
+ }
+
+ private File createUploadFile(String fileName, int size) throws
IOException
+ {
+ Path filePath = tempDir.resolve(fileName);
+ Files.write(filePath, new byte[size]);
+ return new File(filePath.toFile());
+ }
+
+ private void submitUpload(String url, File upload)
+ {
+ tester.getRequest().setMethod("POST");
+
tester.getRequest().addFile(AbstractFileUploadResource.PARAM_NAME, upload,
"text/plain");
+ tester.executeUrl(url);
+ }
+
+ static class UploadPage extends WebPage
+ {
+ private static final long serialVersionUID = 1L;
+
+ final TestField field;
+
+ UploadPage(TestFileUploadResourceReference resourceReference)
+ {
+ field = new TestField("upload", resourceReference);
+ field.setMaxSize(Bytes.kilobytes(1));
+ add(field);
+ }
+ }
+
+ static class TestField extends FileUploadToResourceField
+ {
+ private static final long serialVersionUID = 1L;
+
+ private final TestFileUploadResourceReference resourceReference;
+
+ TestField(String id, TestFileUploadResourceReference
resourceReference)
+ {
+ super(id);
+ this.resourceReference = resourceReference;
+ }
+
+ @Override
+ protected FileUploadResourceReference
getFileUploadResourceReference()
+ {
+ return resourceReference;
+ }
+
+ @Override
+ protected void onUploadSuccess(AjaxRequestTarget target,
List<UploadInfo> fileInfos)
+ {
+ }
+
+ String buildUploadUrl()
+ {
+ StringBuilder url = new StringBuilder(getResourceUrl());
+
url.append('?').append(AbstractFileUploadResource.UPLOAD_ID).append('=')
+ .append(getMarkupId());
+
url.append('&').append(AbstractFileUploadResource.MAX_SIZE).append('=')
+ .append(getMaxSize().bytes());
+
url.append('&').append(AbstractFileUploadResource.FILE_COUNT_MAX).append('=')
+ .append(getFileCountMax());
+
url.append('&').append(AbstractFileUploadResource.UPLOAD_TOKEN).append('=')
+
.append(AbstractFileUploadResource.createUploadToken(getMarkupId(),
getMaxSize(),
+ getFileMaxSize(), getFileCountMax()));
+ return url.toString();
+ }
+
+ String getResourceUrl()
+ {
+ return urlFor(resourceReference, new
PageParameters()).toString();
+ }
+ }
+
+ static class TestFileUploadResourceReference extends
FileUploadResourceReference
+ {
+ private static final long serialVersionUID = 1L;
+
+ TestFileUploadResourceReference(IUploadsFileManager
uploadFileManager)
+ {
+ super(uploadFileManager);
+ }
+ }
+}
diff --git
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/AbstractFileUploadResource.java
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/AbstractFileUploadResource.java
index 50cf91ff85..dea29a3494 100644
---
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/AbstractFileUploadResource.java
+++
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/AbstractFileUploadResource.java
@@ -17,6 +17,8 @@
package org.apache.wicket.markup.html.form.upload.resource;
import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@@ -60,6 +62,10 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
private static final Logger LOG =
LoggerFactory.getLogger(AbstractFileUploadResource.class);
public static final String PARAM_NAME = "WICKET-FILE-UPLOAD";
+ public static final String MAX_SIZE = "maxSize";
+ public static final String FILE_MAX_SIZE = "fileMaxSize";
+ public static final String FILE_COUNT_MAX = "fileCountMax";
+ public static final String UPLOAD_TOKEN = "uploadToken";
/**
* This resource is usually an application singleton. Thus, client side
pass
@@ -81,6 +87,14 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
this.fileManager = fileManager;
}
+ static String createUploadToken(String uploadId, Bytes maxSize, Bytes
fileMaxSize,
+ long fileCountMax)
+ {
+ String plainText = serializeUploadSettings(uploadId, maxSize,
fileMaxSize, fileCountMax);
+ return
Application.get().getSecuritySettings().getCryptFactory().newCrypt()
+ .encryptUrlSafe(plainText);
+ }
+
/**
* Reads and stores the uploaded files
*
@@ -101,6 +115,12 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
Bytes maxSize = getMaxSize(webRequest);
Bytes fileMaxSize = getFileMaxSize(webRequest);
long fileCountMax = getFileCountMax(webRequest);
+ if (!hasValidUploadToken(webRequest, uploadId, maxSize,
fileMaxSize, fileCountMax))
+ {
+ LOG.warn("Rejected upload for '{}' because the signed
upload settings were invalid",
+ uploadId);
+ return createErrorResponse(resourceResponse,
Form.UPLOAD_FAILED_RESOURCE_KEY);
+ }
try
{
MultipartServletWebRequest multiPartRequest =
webRequest.newMultipartWebRequest(maxSize, uploadId);
@@ -186,6 +206,51 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
return resourceResponse;
}
+ private static String serializeUploadSettings(String uploadId, Bytes
maxSize, Bytes fileMaxSize,
+ long fileCountMax)
+ {
+ return uploadId + '\n' + bytesValue(maxSize) + '\n' +
bytesValue(fileMaxSize) + '\n' +
+ fileCountMax;
+ }
+
+ private static String bytesValue(Bytes value)
+ {
+ return value != null ? Long.toString(value.bytes()) : "";
+ }
+
+ private boolean hasValidUploadToken(ServletWebRequest webRequest,
String uploadId, Bytes maxSize,
+ Bytes fileMaxSize, long fileCountMax)
+ {
+ String actualToken = getParameterValue(webRequest,
UPLOAD_TOKEN).toOptionalString();
+ if (actualToken == null)
+ {
+ return false;
+ }
+
+ String expectedToken = createUploadToken(uploadId, maxSize,
fileMaxSize, fileCountMax);
+ return
MessageDigest.isEqual(expectedToken.getBytes(StandardCharsets.UTF_8),
+ actualToken.getBytes(StandardCharsets.UTF_8));
+ }
+
+ private ResourceResponse createErrorResponse(ResourceResponse
resourceResponse, String errorMessage)
+ {
+ resourceResponse.setContentType("application/json");
+ resourceResponse.setStatusCode(HttpServletResponse.SC_OK);
+ JSONObject json = new JSONObject();
+ json.put("error", true);
+ json.put("errorMessage", errorMessage);
+ String error = json.toString();
+ resourceResponse.setWriteCallback(new WriteCallback()
+ {
+ @Override
+ public void writeData(Attributes attributes) throws
IOException
+ {
+ attributes.getResponse().write(error);
+ }
+ });
+ return resourceResponse;
+ }
+
protected String getFileUploadExceptionKey(final FileUploadException e)
{
@@ -263,7 +328,7 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
{
try
{
- return Bytes.bytes(getParameterValue(webRequest,
"maxSize").toLong());
+ return Bytes.bytes(getParameterValue(webRequest,
MAX_SIZE).toLong());
}
catch (StringValueConversionException e)
{
@@ -279,7 +344,7 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
*/
private Bytes getFileMaxSize(ServletWebRequest webRequest)
{
- long fileMaxSize = getParameterValue(webRequest,
"fileMaxSize").toLong(-1);
+ long fileMaxSize = getParameterValue(webRequest,
FILE_MAX_SIZE).toLong(-1);
return fileMaxSize > 0 ? Bytes.bytes(fileMaxSize) : null;
}
@@ -300,7 +365,7 @@ public abstract class AbstractFileUploadResource extends
AbstractResource
*/
private long getFileCountMax(ServletWebRequest webRequest)
{
- return getParameterValue(webRequest, "fileCountMax").toLong(-1);
+ return getParameterValue(webRequest, FILE_COUNT_MAX).toLong(-1);
}
/**
diff --git
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.java
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.java
index fbff4d91e0..47d10fae0e 100644
---
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.java
+++
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.java
@@ -373,6 +373,8 @@ public abstract class FileUploadToResourceField extends
FileUploadField
jsonObject.put("fileMaxSize", fileMaxSize.bytes());
}
jsonObject.put("fileCountMax", getFileCountMax());
+ jsonObject.put("uploadToken",
AbstractFileUploadResource.createUploadToken(getMarkupId(),
+ getMaxSize(), fileMaxSize, getFileCountMax()));
response.render(OnDomReadyHeaderItem.forScript("Wicket.Timer."
+ getMarkupId() + " = new Wicket.FileUploadToResourceField("
+ jsonObject + ","
diff --git
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.js
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.js
index 815e66912f..1ed5e0808b 100644
---
a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.js
+++
b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/resource/FileUploadToResourceField.js
@@ -28,13 +28,14 @@
this.settings = settings;
this.inputName = settings.inputName;
this.input = document.getElementById(this.inputName);
- this.resourceUrl = settings.resourceUrl + "?uploadId=" +
this.inputName + "&maxSize=" + this.settings.maxSize;
+ this.resourceUrl = settings.resourceUrl + "?uploadId=" +
encodeURIComponent(this.inputName) + "&maxSize=" +
encodeURIComponent(this.settings.maxSize);
if (this.settings.fileMaxSize != null) {
- this.resourceUrl = this.resourceUrl + "&fileMaxSize=" +
this.settings.fileMaxSize;
+ this.resourceUrl = this.resourceUrl + "&fileMaxSize=" +
encodeURIComponent(this.settings.fileMaxSize);
}
if (this.settings.fileCountMax != null) {
- this.resourceUrl = this.resourceUrl + "&fileCountMax=" +
this.settings.fileCountMax;
+ this.resourceUrl = this.resourceUrl + "&fileCountMax=" +
encodeURIComponent(this.settings.fileCountMax);
}
+ this.resourceUrl = this.resourceUrl + "&uploadToken=" +
encodeURIComponent(this.settings.uploadToken);
this.ajaxCallBackUrl = settings.ajaxCallBackUrl;
this.clientBeforeSendCallBack = clientBeforeSendCallBack;
this.clientSideSuccessCallBack = clientSideSuccessCallBack;
@@ -106,4 +107,4 @@
Wicket.Log.log("Too late to cancel upload for field '" +
this.inputName + "': the upload has already finished.");
}
}
-})();
\ No newline at end of file
+})();
