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IdpLogoServlet.java
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IdpLogoServlet.java
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package org.oxLogoServlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@WebServlet(urlPatterns = "/servlet/logo")
public class IdpLogoServlet extends HttpServlet {
private Logger logger;
private static final long serialVersionUID = 5445488800130871634L;
private String defaultLogoFileName = "logo.png";
private static final Logger log = LoggerFactory.getLogger(IdpLogoServlet.class);
public static final String BASE_IDP_LOGO_PATH = "/opt/gluu/jetty/idp/custom/static/logo/";
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) {
logger = LoggerFactory.getLogger(IdpLogoServlet.class);
response.setContentType("image/jpg");
response.setDateHeader("Expires", new Date().getTime() + 1000L * 1800);
boolean hasSucceed = readCustomLogo(response);
if (!hasSucceed) {
readDefaultLogo(response);
}
}
private boolean readDefaultLogo(HttpServletResponse response) {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream in = classLoader.getResourceAsStream(defaultLogoFileName);
OutputStream out = null;
try {
out = response.getOutputStream();
IOUtils.copy(in, out);
return true;
} catch (IOException e) {
logger.debug("Error loading default logo: " + e);
return false;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
private boolean readCustomLogo(HttpServletResponse response) {
File directory = new File(BASE_IDP_LOGO_PATH);
if (!directory.exists()) {
directory.mkdir();
}
File logoPath = new File(BASE_IDP_LOGO_PATH + defaultLogoFileName);
if (!logoPath.exists()) {
return false;
}
InputStream in = null;
OutputStream out = null;
try {
in = new FileInputStream(logoPath);
out = response.getOutputStream();
IOUtils.copy(in, out);
return true;
} catch (Exception e) {
log.debug("Error loading custom logo: " + e);
return false;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
protected static File getResourceFile(String resName) {
ClassLoader classLoader = IdpLogoServlet.class.getClassLoader();
return new File(classLoader.getResource(resName).getFile());
}
}