Add a servlet which does not validate upload files

src/main/java/org/t246osslab/easybuggy/troubles/UnrestrictedUploadServlet.java

@@ -0,0 +1,126 @@
+package org.t246osslab.easybuggy.troubles;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Locale;
+
+import javax.imageio.ImageIO;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.MultipartConfig;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.Part;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.t246osslab.easybuggy.utils.Closer;
+import org.t246osslab.easybuggy.utils.HTTPResponseCreator;
+import org.t246osslab.easybuggy.utils.MessageUtils;
+
+@SuppressWarnings("serial")
+@WebServlet(urlPatterns = { "/urupload" })
+// 2MB, 10MB, 50MB
+// @MultipartConfig(fileSizeThreshold = 1024 * 1024 * 2, maxFileSize = 1024 * 1024 * 10, maxRequestSize = 1024 * 1024 *
+// 50)
+@MultipartConfig
+public class UnrestrictedUploadServlet extends HttpServlet {
+
+    private static Logger log = LoggerFactory.getLogger(DBConnectionLeakServlet.class);
+
+    // Name of the directory where uploaded files is saved
+    private static final String SAVE_DIR = "uploadFiles";
+
+    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
+        StringBuilder bodyHtml = new StringBuilder();
+        bodyHtml.append("<form method=\"post\" action=\"urupload\" enctype=\"multipart/form-data\">");
+        bodyHtml.append("Select file to upload: <input type=\"file\" name=\"file\" size=\"60\" /><br>");
+        bodyHtml.append("<br><input type=\"submit\" value=\"Upload\" />");
+        bodyHtml.append("</form>");
+        HTTPResponseCreator.createSimpleResponse(res, "File Upload", bodyHtml.toString());
+    }
+
+    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
+
+        Locale locale = req.getLocale();
+
+        // Get absolute path of the web application
+        String appPath = req.getServletContext().getRealPath("");
+
+        // Create directory to save uploaded file if it does not exists
+        String savePath = appPath + File.separator + SAVE_DIR;
+        File fileSaveDir = new File(savePath);
+        if (!fileSaveDir.exists()) {
+            fileSaveDir.mkdir();
+        }
+
+        OutputStream out = null;
+        InputStream in = null;
+        final Part filePart = req.getPart("file");
+        try {
+            String fileName = getFileName(filePart);
+            out = new FileOutputStream(savePath + File.separator + fileName);
+            in = filePart.getInputStream();
+            int read = 0;
+            final byte[] bytes = new byte[1024];
+            while ((read = in.read(bytes)) != -1) {
+                out.write(bytes, 0, read);
+            }
+
+            // Revere color of the upload image
+            revereColor(new File(savePath + File.separator + fileName).getAbsolutePath());
+
+            StringBuilder bodyHtml = new StringBuilder();
+            bodyHtml.append(MessageUtils.getMsg("msg.reverse.color.complete", locale));
+            bodyHtml.append("<br><br>");
+            bodyHtml.append("<img src=\"" + SAVE_DIR + "/" + fileName + "\">");
+            bodyHtml.append("<br><br>");
+            bodyHtml.append("<INPUT type=\"button\" onClick='history.back();' value=\""
+                    + MessageUtils.getMsg("label.history.back", locale) + "\">");
+            HTTPResponseCreator.createSimpleResponse(res, "Upload", bodyHtml.toString());
+
+        } catch (Exception e) {
+            log.error("Exception occurs: ", e);
+        } finally {
+            Closer.close(out, in);
+        }
+    }
+
+    private String getFileName(final Part part) {
+        for (String content : part.getHeader("content-disposition").split(";")) {
+            if (content.trim().startsWith("filename")) {
+                return content.substring(content.indexOf('=') + 1).trim().replace("\"", "");
+            }
+        }
+        return null;
+    }
+
+    // Revere color of the image file
+    private void revereColor(String fileName) throws IOException {
+        try {
+            BufferedImage image = ImageIO.read(new File(fileName));
+            WritableRaster raster = image.getRaster();
+            int[] pixelBuffer = new int[raster.getNumDataElements()];
+            for (int y = 0; y < raster.getHeight(); y++) {
+                for (int x = 0; x < raster.getWidth(); x++) {
+                    raster.getPixel(x, y, pixelBuffer);
+                    pixelBuffer[0] = ~pixelBuffer[0];
+                    pixelBuffer[1] = ~pixelBuffer[1];
+                    pixelBuffer[2] = ~pixelBuffer[2];
+                    raster.setPixel(x, y, pixelBuffer);
+                }
+            }
+            // Output the image
+            ImageIO.write(image, "png", new File(fileName));
+        } catch (Exception e) {
+            // Log and ignore the exception
+            log.error("Exception occurs: ", e);
+        }
+    }
+}

src/main/resources/messages_en.properties

@@ -7,6 +7,7 @@ label.calculate=Calculate
 label.character.count=Character Count
 label.desc=desc
 label.execution.result=Execution Result: 
+label.history.back=Back
 label.json.string=JSON String
 label.name=Name
 label.obelus=/
@@ -70,6 +71,7 @@ JavaScript is executed if you set name to >tpircs/<;)\"!SSX\"(trela>tpircs<
 msg.permgen.space.leak.occur=Memory leak occurs in PermGen space every time you load this page.<BR><BR> \
 <span class="glyphicon glyphicon-info-sign"></span>&nbsp; If keeping on loading this page, OutOfMemoryError is finally thrown.
 msg.question.reach.the.moon=How many times would you have to fold a piece of paper (thickness 0.1mm) for it to be thick enough to reach the moon (384,400 km)?
+msg.reverse.color.complete=The color reversal of the image has completed.
 msg.socket.leak.occur=Network socket leak occurs every time you load this page.
 msg.unknown.exception.occur=Unknown exception occurs.
 msg.update.records=Updated {0} records.

src/main/resources/messages_ja.properties

@@ -7,9 +7,10 @@ label.calculate=\u8a08\u7b97\u3059\u308b
 label.character.count=\u6587\u5b57\u6570
 label.desc=\u964d\u9806
 label.execution.result=\u5b9f\u884c\u7d50\u679c: 
+label.history.back=\u623b\u308b
 label.json.string=JSON\u6587\u5b57\u5217
 label.name=\u540d\u524d
-label.obelus=\u00f7
+label.obelus=÷
 label.order=\u9806\u5e8f
 label.password=\u30d1\u30b9\u30ef\u30fc\u30c9
 label.reversed.name=\u9006\u8ee2\u3057\u305f\u540d\u524d
@@ -70,6 +71,7 @@ msg.match.regular.expression=\u5165\u529b\u6587\u5b57\u5217\u306f\u6b63\u898f\u8
 msg.permgen.space.leak.occur=\u3053\u306e\u30da\u30fc\u30b8\u3092\u8aad\u307f\u8fbc\u3080\u305f\u3073\u306b\u3001Permanent\u9818\u57df\u306e\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u304c\u767a\u751f\u3057\u307e\u3059\u3002<BR><BR> \
 <span class="glyphicon glyphicon-info-sign"></span>&nbsp; \u753b\u9762\u3092\u30ed\u30fc\u30c9\u3057\u7d9a\u3051\u308b\u3068\u3001\u6700\u7d42\u7684\u306bOutOfMemoryError\u304c\u30b9\u30ed\u30fc\u3055\u308c\u307e\u3059\u3002
 msg.question.reach.the.moon=0.1mm\u306e\u539a\u3055\u306e\u7d19\u3092\u4f55\u56de\u6298\u308a\u305f\u305f\u3080\u3068\u3001\u5730\u7403\u304b\u3089\u6708\u306e\u8ddd\u96e2(384,400 km)\u306b\u5230\u9054\u3059\u308b\u3067\u3057\u3087\u3046\u304b\uff1f
+msg.reverse.color.complete=\u753b\u50cf\u306e\u8272\u53cd\u8ee2\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f\u3002
 msg.socket.leak.occur=\u3053\u306e\u30da\u30fc\u30b8\u3092\u8aad\u307f\u8fbc\u3080\u305f\u3073\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bd\u30b1\u30c3\u30c8\u30ea\u30fc\u30af\u304c\u767a\u751f\u3057\u307e\u3059\u3002
 msg.unknown.exception.occur=\u4e0d\u660e\u306a\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002
 msg.update.records={0}\u4ef6\u66f4\u65b0\u3057\u307e\u3057\u305f\u3002