?? fingerprint.jsp
字號:
<%@ page import="java.io.File,
java.io.IOException,
java.util.Date"
session="false" %>
<html>
<head>
<title>System Fingerprint</title>
</head>
<body bgcolor=#ffffff>
<%!
/*
* Fingerprint the users system. This is mainly for use in
* diagnosing classpath problems. It is intended to dump out
* a copy of the environment this webapp is running in,
* and additionally attempt to identify versions of each jar
* in the classpath.
*
* @author Brian Ewins
*/
private java.util.Properties versionProps=new java.util.Properties();
/**
* Identify the version of a jar file. This uses a properties file
* containing known names and sizes in the format
* 'name(size)=version'. Version strings should be like 'xerces-1.4'
* ie they should include the name of the library.
*/
public String getFileVersion(File file) throws IOException {
String key="<td>"+file.getName()+"</td>";
key+= "<td>"+file.length()+"</td>";
Date timestamp=new Date(file.lastModified());
key+= "<td>"+timestamp.toString()+"</td>";
return key;
/* TODO: implement
String value=versionProps.getProperty(key);
if (value==null) {
// make it possible to have jars without version nos
value=versionProps.getProperty(file.getName());
}
if (value==null) {
// fall back on something obvious
value=key;
Date timestamp=new Date(file.lastModified());
value+=" / "+timestamp.toString();
}
return value;
*/
}
/**
* Split up a classpath-like variable. Returns a list of files.
* TODO: this can't cope with relative paths. I think theres code in BCEL that
* can be used for this?
*/
File[] splitClasspath(String path) throws IOException {
java.util.StringTokenizer st=
new java.util.StringTokenizer(path,
System.getProperty("path.separator"));
int toks=st.countTokens();
File[] files=new File[toks];
for(int i=0;i<toks;i++) {
files[i]=new File(st.nextToken());
}
return files;
}
/** given a list of files, return a list of jars which actually exist */
File[] scanFiles(File[] files) throws IOException {
File[] jars=new File[files.length];
int found=0;
for (int i=0; i<files.length; i++) {
if (files[i].getName().toLowerCase().endsWith(".jar")
&& files[i].exists()) {
jars[found]=files[i];
found++;
}
}
if (found<files.length) {
File[] temp=new File[found];
System.arraycopy(jars,0,temp,0,found);
jars=temp;
}
return jars;
}
private static final File[] NO_FILES=new File[0];
/** scan a directory for jars */
public File[] scanDir(String dir) throws IOException
{
return scanDir(new File(dir));
}
public File[] scanDir(File dir) throws IOException {
if (!dir.exists() || !dir.isDirectory()) {
return NO_FILES;
}
return scanFiles(dir.listFiles());
}
/** scan a classpath for jars */
public File[] scanClasspath(String path) throws IOException {
if (path==null) {
return NO_FILES;
}
return scanFiles(splitClasspath(path));
}
/**
* scan a 'dirpath' (like the java.ext.dirs system property) for jars
*/
public File[] scanDirpath(String path) throws IOException {
if (path==null) {
return NO_FILES;
}
File[] current=new File[0];
File[] dirs=splitClasspath(path);
for(int i=0; i<dirs.length; i++) {
File[] jars=scanDir(dirs[i]);
File[] temp=new File[current.length+jars.length];
System.arraycopy(current,0,temp,0,current.length);
System.arraycopy(jars,0,temp,current.length,jars.length);
current=temp;
}
return scanFiles(current);
}
/** print out the jar versions for a directory */
public void listDirectory(String title, JspWriter out,String dir, String comment) throws IOException {
listVersions(title, out,scanDir(dir), comment);
}
/** print out the jar versions for a directory-like system property */
public void listDirProperty(String title, JspWriter out,String key, String comment) throws IOException {
listVersions(title, out,scanDir(System.getProperty(key)), comment);
}
/** print out the jar versions for a classpath-like system property */
public void listClasspathProperty(String title, JspWriter out,String key, String comment) throws IOException {
listVersions(title, out,scanClasspath(System.getProperty(key)), comment);
}
/** print out the jar versions for a 'java.ext.dirs'-like system property */
public void listDirpathProperty(String title, JspWriter out,String key, String comment) throws IOException {
listVersions(title, out,scanDirpath(System.getProperty(key)), comment);
}
/** print out the jar versions for a context-relative directory */
public void listContextPath(String title, JspWriter out, String path, String comment) throws IOException {
listVersions(title, out,scanDir(getServletConfig().getServletContext().getRealPath(path)), comment);
}
/** print out the jar versions for a given list of files */
public void listVersions(String title, JspWriter out,File[] jars, String comment) throws IOException {
out.print("<h2>");
out.print(title);
out.println("</h2>");
out.println("<table>");
for (int i=0; i<jars.length; i++) {
out.println("<tr>"+getFileVersion(jars[i])+"</tr>");
}
out.println("</table>");
if(comment!=null && comment.length()>0) {
out.println("<p>");
out.println(comment);
out.println("<p>");
}
}
%>
<h1>System Fingerprint</h1>
<h2>JVM and Server Version</h2>
<table>
<tr>
<td>Servlet Engine</td>
<td><%= getServletConfig().getServletContext().getServerInfo() %></td>
<td><%= getServletConfig().getServletContext().getMajorVersion() %></td>
<td><%= getServletConfig().getServletContext().getMinorVersion() %></td>
</tr>
<tr>
<td>Java VM</td>
<td><%= System.getProperty("java.vm.vendor") %></td>
<td><%= System.getProperty("java.vm.name") %></td>
<td><%= System.getProperty("java.vm.version") %></td>
</tr>
<tr>
<td>Java RE</td>
<td><%= System.getProperty("java.vendor") %></td>
<td><%= System.getProperty("java.version") %></td>
<td> </td>
</tr>
<tr>
<td>Platform</td>
<td><%= System.getProperty("os.name") %></td>
<td><%= System.getProperty("os.arch") %></td>
<td><%= System.getProperty("os.version") %></td>
</tr>
</table>
<%
listClasspathProperty("Boot jars", out,"sun.boot.class.path", "Only valid on a sun jvm");
listClasspathProperty("System jars", out,"java.class.path", null);
listDirpathProperty("Extra system jars", out,"java.ext.dirs", null);
listContextPath("Webapp jars", out, "/WEB-INF/lib", null);
// identify the container...
String container=getServletConfig().getServletContext().getServerInfo();
if (container.startsWith("Tomcat Web Server/3.2")) {
String home=System.getProperty("tomcat.home");
if(home!=null) {
listDirectory("Tomcat 3.2 Common Jars", out,
home+File.separator
+"lib",
null);
}
} else if (container.startsWith("Tomcat Web Server/3.3")) {
String home=System.getProperty("tomcat.home");
if(home!=null) {
listDirectory("Tomcat 3.3 Container Jars", out,
home+File.separator
+"lib"+File.separator
+"container",
null);
listDirectory("Tomcat 3.3 Common Jars", out,
home+File.separator
+"lib"+File.separator
+"common",
null);
}
} else if (container.startsWith("Apache Tomcat/4.0")) {
//handle catalina common dir
String home=System.getProperty("catalina.home");
if(home!=null) {
listDirectory("Tomcat 4.0 Common Jars", out,
home+File.separator
+"common"+File.separator
+"lib",
null);
}
} else if (container.startsWith("Apache Tomcat/4.1")) {
//handle catalina common dir
String home=System.getProperty("catalina.home");
if(home!=null) {
listDirectory("Tomcat 4.1 Common Jars", out,
home+File.separator
+"shared"+File.separator
+"lib",
null);
}
} else if (System.getProperty("resin.home")!=null) {
String home=System.getProperty("resin.home");
if(home!=null) {
listDirectory("Resin Common Jars", out,
home+File.separator
+"lib",
null);
}
} else if (System.getProperty("weblogic.httpd.servlet.classpath")!=null) {
listClasspathProperty("Weblogic Servlet Jars", out,
"weblogic.httpd.servlet.classpath",
null);
} else {
//TODO: identify more servlet engine classpaths.
}
%>
</body>
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