📄 fingerprint.jsp
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<%@ 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></html>⌨️ 快捷键说明
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