From 23fafb58424165a22f0c37dee093b6312ce6acef Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Mon, 15 Feb 2016 13:57:32 +0100
Subject: QR placeholder generation servlet
---
.../gv/egiz/pdfas/web/config/WebConfiguration.java | 12 ++
.../web/servlets/PlaceholderGeneratorServlet.java | 174 +++++++++++++++++++++
.../src/main/resources/img/PLACEHOLDER-SIG_EN.png | Bin 0 -> 30364 bytes
.../src/main/resources/img/PLATZHALTER-SIG.png | Bin 0 -> 33495 bytes
pdf-as-web/src/main/webapp/WEB-INF/web.xml | 10 ++
5 files changed, 196 insertions(+)
create mode 100644 pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/servlets/PlaceholderGeneratorServlet.java
create mode 100644 pdf-as-web/src/main/resources/img/PLACEHOLDER-SIG_EN.png
create mode 100644 pdf-as-web/src/main/resources/img/PLATZHALTER-SIG.png
diff --git a/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/config/WebConfiguration.java b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/config/WebConfiguration.java
index 0ad96b04..4ef320a1 100644
--- a/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/config/WebConfiguration.java
+++ b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/config/WebConfiguration.java
@@ -93,6 +93,8 @@ public class WebConfiguration implements IConfigurationConstants {
public static final String UPLOAD_MAX_FILESIZE = "web.upload.filesizeMax";
public static final String UPLOAD_MAX_REQUESTSIZE = "web.upload.RequestsizeMax";
+ public static final String PLACEHOLDER_GENERATOR_ENABLED = "qr.placeholder.generator.enabled";
+
private static final int THRESHOLD_SIZE = 1024 * 1024 * 3; // 3MB
private static final int MAX_FILE_SIZE = 1024 * 1024 * 40; // 40MB
private static final int MAX_REQUEST_SIZE = 1024 * 1024 * 50; // 50MB
@@ -308,6 +310,16 @@ public class WebConfiguration implements IConfigurationConstants {
return false;
}
+ public static boolean isQRPlaceholderGenerator() {
+ String value = properties.getProperty(PLACEHOLDER_GENERATOR_ENABLED);
+ if (value != null) {
+ if (value.equals("true")) {
+ return true;
+ }
+ }
+ return false;
+ }
+
public static String getMoaURL(String keyIdentifier) {
return properties.getProperty(MOA_LIST + "." + keyIdentifier + "." + MOA_URL);
}
diff --git a/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/servlets/PlaceholderGeneratorServlet.java b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/servlets/PlaceholderGeneratorServlet.java
new file mode 100644
index 00000000..bd64c75d
--- /dev/null
+++ b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/servlets/PlaceholderGeneratorServlet.java
@@ -0,0 +1,174 @@
+package at.gv.egiz.pdfas.web.servlets;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.imageio.ImageIO;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.http.HttpStatus;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.zxing.WriterException;
+
+import at.gv.egiz.pdfas.lib.impl.placeholder.PlaceholderExtractorConstants;
+import at.gv.egiz.pdfas.lib.impl.placeholder.SignaturePlaceholderData;
+import at.gv.egiz.pdfas.web.config.WebConfiguration;
+import at.gv.egiz.pdfas.web.helper.QRCodeGenerator;
+
+public class PlaceholderGeneratorServlet extends HttpServlet implements PlaceholderExtractorConstants {
+
+ /**
+ *
+ */
+ private static final long serialVersionUID = -5854130802422496977L;
+
+ public static final String PARAM_ID = "id";
+ public static final String PARAM_PROFILE = "profile";
+
+ private static final Logger logger = LoggerFactory
+ .getLogger(ExternSignServlet.class);
+
+ @Override
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ this.doProcess(req, resp);
+ }
+
+ @Override
+ protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ this.doProcess(req, resp);
+ }
+
+ protected void doProcess(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+
+ if(!WebConfiguration.isQRPlaceholderGenerator()) {
+ logger.info("QR Placeholder is disabled by configuration (see {})" + WebConfiguration.PLACEHOLDER_GENERATOR_ENABLED);
+ resp.sendError(HttpStatus.SC_NOT_FOUND);
+ return;
+ }
+
+ String baseImage = "/img/PLATZHALTER-SIG.png";
+
+ String id = req.getParameter(PARAM_ID);
+ String profile = req.getParameter(PARAM_PROFILE);
+
+ String buildString = QR_PLACEHOLDER_IDENTIFIER;
+
+ String filename = "placeholder";
+
+ if(id != null && !id.isEmpty()) {
+ id = id.replaceAll("[^a-zA-Z0-9]", "_");
+ buildString = buildString + ";" + SignaturePlaceholderData.ID_KEY + "=" + id;
+ filename = filename + "_" + id;
+ }
+
+ if(profile != null && !profile.isEmpty()) {
+ buildString = buildString + ";" + SignaturePlaceholderData.PROFILE_KEY + "=" + profile;
+
+ if(profile.endsWith("_EN")) {
+ baseImage = "/img/PLACEHOLDER-SIG_EN.png";
+ filename = filename + "_en";
+ } else {
+ filename = filename + "_de";
+ }
+ }
+
+ filename = filename + ".png";
+
+ logger.info("generating qr placeholder for '{}' as {}", buildString, filename);
+
+ //if(id != null || profile != null) {
+ // We need to generate the image
+
+ InputStream is = this.getClass().getClassLoader().getResourceAsStream(baseImage);
+ if(is == null) {
+ logger.warn("Cannot open resource {} to generator QR placeholder", baseImage);
+ resp.sendError(HttpStatus.SC_NOT_FOUND);
+ return;
+ }
+
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+ // generate QR code
+ try {
+ QRCodeGenerator.generateQRCode(buildString, baos, 90);
+ } catch (WriterException e) {
+ logger.warn("Failed to generate QR Code for placeholder generationg", e);
+ resp.sendError(HttpStatus.SC_INTERNAL_SERVER_ERROR);
+ return;
+ }
+
+ baos.close();
+
+ BufferedImage base = ImageIO.read(is);
+ BufferedImage qr = ImageIO.read(new ByteArrayInputStream(baos.toByteArray()));
+
+ BufferedImage off_Image =
+ new BufferedImage(250, 98,
+ BufferedImage.TYPE_INT_ARGB);
+
+ Graphics g = off_Image.getGraphics();
+ g.drawImage(base, 0, 0, 250, 98, 0, 0, base.getWidth(), base.getHeight(), null);
+ g.drawImage(qr, 4, 4, 94, 94, 0, 0, qr.getWidth(), qr.getHeight(), null);
+ g.setColor(Color.WHITE);
+ g.fillRect(94, 4, 152, 90);
+ //g.(x, y, width, height);
+ Font writeFont = new Font(Font.SANS_SERIF, Font.BOLD, 14);
+ g.setFont(writeFont);
+ g.setColor(Color.BLACK);
+
+ if(profile != null && profile.endsWith("_EN")) {
+ g.drawString("placeholder for", 102, 13+18);
+ g.drawString("the electronic", 102, 13+18 + 18);
+ g.drawString("signature", 102, 13+18 + 18 + 18);
+ } else {
+ g.drawString("Platzhalter für", 102, 13+18);
+ g.drawString("die elektronische", 102, 13+18 + 18);
+ g.drawString("Signatur", 102, 13+18 + 18 + 18);
+ }
+ if(id != null && !id.isEmpty()) {
+
+ Font nrFont = new Font(Font.SANS_SERIF, Font.BOLD | Font.ITALIC, 14);
+ g.setFont(nrFont);
+
+ g.drawString("NR: " + id, 102, 13+18 + 18 + 18 + 18);
+ }
+
+ logger.info("serving qr placeholder for '{}'", buildString);
+ resp.setContentType("image/png");
+ resp.setHeader("Cache-Control", "private, no-store, no-cache, must-revalidate");
+ resp.setHeader("Pragma", "no-cache");
+ resp.setHeader ("Content-Disposition", "attachment; filename=\""+filename+"\"");
+
+ ImageIO.write(off_Image, "PNG", resp.getOutputStream());
+ return;
+ /*} else {
+ // just use the template
+ InputStream is = this.getClass().getClassLoader().getResourceAsStream(baseImage);
+ if(is == null) {
+ logger.warn("Cannot open resource {} to generator QR placeholder", baseImage);
+ resp.sendError(HttpStatus.SC_NOT_FOUND);
+ return;
+ } else {
+ logger.info("serving default qr placeholder");
+ resp.setContentType("image/png");
+ resp.setHeader("Cache-Control", "private, no-store, no-cache, must-revalidate");
+ resp.setHeader("Pragma", "no-cache");
+ IOUtils.copy(is, resp.getOutputStream());
+ return;
+ }
+ }*/
+ }
+
+}
diff --git a/pdf-as-web/src/main/resources/img/PLACEHOLDER-SIG_EN.png b/pdf-as-web/src/main/resources/img/PLACEHOLDER-SIG_EN.png
new file mode 100644
index 00000000..62211958
Binary files /dev/null and b/pdf-as-web/src/main/resources/img/PLACEHOLDER-SIG_EN.png differ
diff --git a/pdf-as-web/src/main/resources/img/PLATZHALTER-SIG.png b/pdf-as-web/src/main/resources/img/PLATZHALTER-SIG.png
new file mode 100644
index 00000000..fee5e35d
Binary files /dev/null and b/pdf-as-web/src/main/resources/img/PLATZHALTER-SIG.png differ
diff --git a/pdf-as-web/src/main/webapp/WEB-INF/web.xml b/pdf-as-web/src/main/webapp/WEB-INF/web.xml
index 4dd96f5f..eec30639 100644
--- a/pdf-as-web/src/main/webapp/WEB-INF/web.xml
+++ b/pdf-as-web/src/main/webapp/WEB-INF/web.xml
@@ -135,6 +135,12 @@
<description></description>
<servlet-class>at.gv.egiz.pdfas.web.servlets.UIEntryPointServlet</servlet-class>
</servlet>
+ <servlet>
+ <servlet-name>QRPlaceholderGenerator</servlet-name>
+ <display-name>QRPlaceholderGenerator</display-name>
+ <description></description>
+ <servlet-class>at.gv.egiz.pdfas.web.servlets.PlaceholderGeneratorServlet</servlet-class>
+ </servlet>
<!-- Define mappings that are used by the servlet container to translate
a particular request URI (context-relative) to a particular servlet. The
@@ -197,6 +203,10 @@
<servlet-name>UIEntryPointServlet</servlet-name>
<url-pattern>/userentry</url-pattern>
</servlet-mapping>
+ <servlet-mapping>
+ <servlet-name>QRPlaceholderGenerator</servlet-name>
+ <url-pattern>/placeholder</url-pattern>
+ </servlet-mapping>
<!-- Define the default session timeout for your application, in minutes.
From a servlet or JSP page, you can modify the timeout for a particular session
--
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