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// ========================================================================
// $Id: Main.java,v 1.37 2006/05/27 09:56:58 gregwilkins Exp $
// Copyright 2003-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================
package org.browsermob.proxy.jetty.start;

import java.io.*;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.Policy;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.StringTokenizer;

/*-------------------------------------------*/
/**
 * Main start class. This class is intended to be the main class listed in the MANIFEST.MF of the
 * start.jar archive. It allows an application to be started with the command "java -jar
 * start.jar". The behaviour of Main is controlled by the "org/browsermob/proxy/jetty/start/start.config" file
 * obtained as a resource or file. This can be overridden with the START system property. The
 * format of each line in this file is:
 * 
 * 
 * 
 * SUBJECT [ [!] CONDITION [AND|OR] ]*
 * 
 * 
* * where SUBJECT: * *
 * 
 * ends with ".class" is the Main class to run. ends with ".xml" is a configuration file for the
 * command line ends with "/" is a directory from which add all jar and zip files from. ends with
 * "/*" is a directory from which add all unconsidered jar and zip files from. Containing = are
 * used to assign system properties. all other subjects are treated as files to be added to the
 * classpath.
 * 
 * 
* * Subjects may include system properties with $(propertyname) syntax. File subjects starting with * "/" are considered absolute, all others are relative to the home directory. *

* CONDITION is one of: * *

 * 
 * always never available package.class java OPERATOR n.n nargs OPERATOR n OPERATOR := one of "
 * <",">"," <=",">=","==","!="
 * 
 * 
* * CONTITIONS can be combined with AND OR or !, with AND being the assume operator for a list of * CONDITIONS. Classpath operations are evaluated on the fly, so once a class or jar is added to * the classpath, subsequent available conditions will see that class. The system parameter * CLASSPATH, if set is given to the start classloader before any paths from the configuration * file. Programs started with start.jar may be stopped with the stop.jar, which connects via a * local port to stop the server. The default port can be set with the STOP.PORT system property (a * port of < 0 disables the stop mechanism). If the STOP.KEY system property is set, then a random * key is generated and written to stdout. This key must be passed to the stop.jar. * * @author Jan Hlavaty ([email protected]) * @author Greg Wilkins * @version $Revision: 1.37 $ */ public class Main { static boolean _debug=System.getProperty("DEBUG",null)!=null; private String _classname=null; private Classpath _classpath=new Classpath(); private String _config=System.getProperty("START","org/browsermob/proxy/jetty/start/start.config"); private ArrayList _xml=new ArrayList(); public static void main(String[] args) { try { new Main().start(args); } catch(Exception e) { e.printStackTrace(); } } static File getDirectory(String name) { try { if(name!=null) { File dir=new File(name).getCanonicalFile(); if(dir.isDirectory()) { return dir; } } } catch(IOException e) {} return null; } boolean isAvailable(String classname) { try { Class.forName(classname); return true; } catch(NoClassDefFoundError e) {} catch(ClassNotFoundException e) {} ClassLoader loader=_classpath.getClassLoader(); try { loader.loadClass(classname); return true; } catch(NoClassDefFoundError e) {} catch(ClassNotFoundException e) {} return false; } public static void invokeMain(ClassLoader classloader,String classname,String[] args) throws IllegalAccessException,InvocationTargetException,NoSuchMethodException,ClassNotFoundException { Class invoked_class=null; invoked_class=classloader.loadClass(classname); Class[] method_param_types=new Class[1]; method_param_types[0]=args.getClass(); Method main=null; main=invoked_class.getDeclaredMethod("main",method_param_types); Object[] method_params=new Object[1]; method_params[0]=args; main.invoke(null,method_params); } /* ------------------------------------------------------------ */ String expand(String s) { int i1=0; int i2=0; while(s!=null) { i1=s.indexOf("$(",i2); if(i1<0) break; i2=s.indexOf(")",i1+2); if(i2<0) break; String property=System.getProperty(s.substring(i1+2,i2),""); s=s.substring(0,i1)+property+s.substring(i2+1); } return s; } /* ------------------------------------------------------------ */ void configure(InputStream config,int nargs) throws Exception { BufferedReader cfg=new BufferedReader(new InputStreamReader(config,"ISO-8859-1")); Version java_version=new Version(System.getProperty("java.version")); Version ver=new Version(); // JAR's already processed java.util.Hashtable done=new Hashtable(); // Initial classpath String classpath=System.getProperty("CLASSPATH"); if(classpath!=null) { StringTokenizer tok=new StringTokenizer(classpath,File.pathSeparator); while(tok.hasMoreTokens()) _classpath.addComponent(tok.nextToken()); } // Handle line by line String line=null; while(true) { line=cfg.readLine(); if(line==null) break; if(line.length()==0||line.startsWith("#")) continue; try { StringTokenizer st=new StringTokenizer(line); String subject=st.nextToken(); subject=expand(subject); boolean expression=true; boolean not=false; String condition=null; // Evaluate all conditions while(st.hasMoreTokens()) { condition=st.nextToken(); if(condition.equalsIgnoreCase("!")) { not=true; continue; } if(condition.equalsIgnoreCase("OR")) { if(expression) break; expression=true; continue; } if(condition.equalsIgnoreCase("AND")) { if(!expression) break; continue; } boolean eval=true; if(condition.equals("true")||condition.equals("always")) { eval=true; } else if(condition.equals("false")||condition.equals("never")) { eval=false; } else if(condition.equals("available")) { String class_to_check=st.nextToken(); eval=isAvailable(class_to_check); } else if(condition.equals("exists")) { try { eval=false; File file=new File(expand(st.nextToken())); eval=file.exists(); } catch(Exception e) { if(_debug) e.printStackTrace(); } } else if(condition.equals("property")) { String property = System.getProperty(st.nextToken()); eval=property!=null && property.length()>0; } else if(condition.equals("java")) { String operator=st.nextToken(); String version=st.nextToken(); ver.parse(version); eval=(operator.equals("<")&&java_version.compare(ver)<0) ||(operator.equals(">")&&java_version.compare(ver)>0) ||(operator.equals("<=")&&java_version.compare(ver)<=0) ||(operator.equals("=<")&&java_version.compare(ver)<=0) ||(operator.equals("=>")&&java_version.compare(ver)>=0) ||(operator.equals(">=")&&java_version.compare(ver)>=0) ||(operator.equals("==")&&java_version.compare(ver)==0) ||(operator.equals("!=")&&java_version.compare(ver)!=0); } else if(condition.equals("nargs")) { String operator=st.nextToken(); int number=Integer.parseInt(st.nextToken()); eval=(operator.equals("<")&&nargs")&&nargs>number) ||(operator.equals("<=")&&nargs<=number)||(operator.equals("=<")&&nargs<=number) ||(operator.equals("=>")&&nargs>=number)||(operator.equals(">=")&&nargs>=number) ||(operator.equals("==")&&nargs==number)||(operator.equals("!=")&&nargs!=number); } else { System.err.println("ERROR: Unknown condition: "+condition); eval=false; } expression&=not?!eval:eval; not=false; } String file=subject.replace('/',File.separatorChar); if(_debug) System.err.println((expression?"T ":"F ")+line+" subject="+subject); if(!expression) { done.put(file,file); continue; } // Handle the subject if(subject.indexOf("=")>0) { int i=file.indexOf("="); String property=file.substring(0,i); String value=file.substring(i+1); if(_debug) System.err.println(" "+property+"="+value); System.setProperty(property,value); } else if(subject.endsWith("/*")) { // directory of JAR files File extdir=new File(file.substring(0,file.length()-1)); File[] jars=extdir.listFiles(new FilenameFilter() { public boolean accept(File dir,String name) { String namelc=name.toLowerCase(); return namelc.endsWith(".jar")||name.endsWith(".zip"); } }); for(int i=0;jars!=null&&i0) { if(_debug) System.err.println(" CLASS="+cn); _classname=cn; } } else if (subject!=null && subject.length()>0) { // single JAR file File f=new File(file); String d=f.getCanonicalPath(); if(!done.containsKey(d)) { done.put(d,d); boolean added=_classpath.addComponent(d); if(!added) { added=_classpath.addClasspath(expand(subject)); if(_debug) System.err.println((added?" CLASSPATH+=":" !")+d); } else if(_debug) System.err.println((added?" CLASSPATH+=":" !")+d); } } } catch(Exception e) { System.err.println("on line: '"+line+"'"); e.printStackTrace(); } } } /* ------------------------------------------------------------ */ public void start(String[] args) { ArrayList al=new ArrayList(); for(int i=0;i-->


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