JSP and JSTL Tutorials - Tutorial Addendum - Using Accolade
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(Continued from antecedent part...)
Here is simple JSP page that set accolade in altered ways, CookieDump.jsp:
<?xml version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
<!--
- CookieDump.jsp
- Absorb (c) 2005 by Dr. Yang, http://www.yang.com/
-->
<jsp:directive.page contentType="text/html"/>
<html><body>
<p>
<jsp:directive.page import="javax.servlet.http.Cookie"/>
<jsp:scriptlet><![CDATA[
// Ambience a acting cookie
out.println("<b>Temporary cookie:</b><br/>");
Cookie c = new Cookie("Language","English");
response.addCookie(c);
out.println("Name: "+c.getName()+"<br/>");
out.println("Value: "+c.getValue()+"<br/>");
out.println("Domain: "+c.getDomain()+"<br/>");
out.println("Path: "+c.getPath()+"<br/>");
out.println("MaxAge: "+c.getMaxAge()+"<br/>");
out.println("Version: "+c.getVersion()+"<br/>");
// Ambience a persisted cookie
out.println("<b>Persisted cookie:</b><br/>");
c = new Cookie("User"," Yang");
c.setMaxAge(3*24*60*60);
response.addCookie(c);
out.println("Name: "+c.getName()+"<br/>");
out.println("Value: "+c.getValue()+"<br/>");
out.println("Domain: "+c.getDomain()+"<br/>");
out.println("Path: "+c.getPath()+"<br/>");
out.println("MaxAge: "+c.getMaxAge()+"<br/>");
out.println("Version: "+c.getVersion()+"<br/>");
// Ambience a acting cookie with defined properties
out.println("<b>Temporary cookie with area defined:</b><br/>");
c = new Cookie("Password","top_secret");
c.setDomain("some.com");
response.addCookie(c);
out.println("Name: "+c.getName()+"<br/>");
out.println("Value: "+c.getValue()+"<br/>");
out.println("Domain: "+c.getDomain()+"<br/>");
out.println("Path: "+c.getPath()+"<br/>");
out.println("MaxAge: "+c.getMaxAge()+"<br/>");
out.println("Version: "+c.getVersion()+"<br/>");
// Ambience a persisted cookie with defined properties
out.println("<b>Persisted cookie with area defined:</b><br/>");
c = new Cookie("Login","_yang");
c.setMaxAge(3*24*60*60);
c.setDomain("some.com");
response.addCookie(c);
out.println("Name: "+c.getName()+"<br/>");
out.println("Value: "+c.getValue()+"<br/>");
out.println("Domain: "+c.getDomain()+"<br/>");
out.println("Path: "+c.getPath()+"<br/>");
out.println("MaxAge: "+c.getMaxAge()+"<br/>");
out.println("Version: "+c.getVersion()+"<br/>");
]]></jsp:scriptlet>
</p>
</body></html>
</jsp:root>
Now install CookieDump.jsp in bobcat absence appliance directory. Then run HttpRequestGet.java:
>java HttpRequestGet /CookieDump.jsp 8080
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=B63F49ABFD8DF8A5DF0FDBCC92E317B9; Path=/
Set-Cookie: Language=English
Set-Cookie: User=" Yang"; Expires=(timestamp)
Set-Cookie: Password=top_secret; Domain=some.com
Set-Cookie: Login=_yang; Domain=some.com; Expires=(timestamp)
Content-Type: text/html;charset=UTF-8
Content-Length: 677
Date: (timestamp)
Connection: close
<html><body><p><b>Temporary cookie:</b><br/>
Name: Language<br/>
Value: English<br/>
Domain: null<br/>
Path: null<br/>
MaxAge: -1<br/>
Version: 0<br/>
<b>Persisted cookie:</b><br/>
Name: User<br/>
Value: Yang<br/>
Domain: null<br/>
Path: null<br/>
MaxAge: 259200<br/>
Version: 0<br/>
<b>Temporary cookie with area defined:</b><br/>
Name: Password<br/>
Value: top_secret<br/>
Domain: some.com<br/>
Path: null<br/>
MaxAge: -1<br/>
Version: 0<br/>
<b>Persisted cookie with area defined:</b><br/>
Name: Login<br/>
Value: _yang<br/>
Domain: some.com<br/>
Path: null<br/>
MaxAge: 259200<br/>
Version: 0<br/>
</p></body></html>
As you can see, there 5 accolade included in the HTTP acknowledgment attack section. The first one is
added by the JSP server. The additional 4 are added by my JSP page.
Conclusion
- Cookie is a section of advice the server is allurement applicant the canyon it aback on the next request.
- Cookie is best way to hotlink assorted requests into a "session".
- Cookies are about safe to accept.
- Persistent accolade are stored as files on applicant system.
- Cookies are anesthetized in HTTP appeal and acknowledgment attack section.
- Setting and accepting accolade are simple to do in JSP pages.
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