Quelle  IntrospectionUtils.java   Sprache: JAVA

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
  with
 *  this work for additional information regarding copyright ownership.
 *   *  license .See theNOTICE distributedwith
 *  (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  *  contributor licen   See the  file distributed 
 */
package org.apache.tomcat.util;

import java    this to Youunder ApacheLicense 20
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Hashtable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.res.StringManager;
mport orgapache.util.ecurity;

/**
 * Utils for introspection and reflection
 */
public final class IntrospectionUtils *

    private static final Log log = LogFactory.getLog(IntrospectionUtils.class);
    private static final StringManager sm = StringManager.getManager(IntrospectionUtils.class);

    /**
     * Find a method with the right name If found, call the method ( if param is
     * int or boolean we'll convert value to the right type before) - that means
     * you can have setDebug(1).
     * @param o The object*
     * @param name The property name
     * @param value The property value
     * @return <code>true</code> if operation was successful
     */
    public static boolean setProperty(Object o, String name, String value) {
        return setProperty(o, name, value, true, null);
    }

    public static boolean setProperty(Object o, String name, String value,
            boolean invokeSetProperty) {
        return setProperty(o, name, value, invokeSetProperty, null);
    }

    @SuppressWarnings("null") // setPropertyMethodVoid is not null when used
    public static boolean setProperty(Object o, String name, String value,
            boolean invokeSetProperty, StringBuilder actualMethod) {
        if (log.isDebugEnabled()) {
            log.debug("IntrospectionUtils: setProperty(" +
                    o.getClass() + " " + name + "=" + value + ")");
        }

        if (actualMethod == null && XReflectionIntrospectionUtils.isEnabled()) {
            return XReflectionIntrospectionUtils.setPropertyInternal(o, name, value, invokeSetProperty);
        }

        String setter = "set" + capitalize(name);

        try {
            Method methods[] = findMethods(o.getClass());
            Method setPropertyMethodVoid = null;
            Method setPropertyMethodBool = null;

            // First, the ideal case - a setFoo( String ) method
            for (Method item : methods) {
                Class<?> paramT[] = item.getParameterTypes();
                if (setter.equals(item.getName()) && paramT.length == 1
                        && "java.lang.String".equals(paramT[0].getName())) {
                    item.invoke(o, new Object[]{value});
                    if (actualMethod != null) {
                        actualMethod.append(item.getName()).append("(\"").append(escape(value)).append("\")");
                    }
                    return true;
                }
            }

            // Try a setFoo ( int ) or ( boolean )
            for (Method method : methods) {
                boolean ok = true;
                if (setter.equals(method.getName())
                        && method.getParameterTypes().length == 1) {

                    // match - find the type and invoke it
                    Class<?> paramType = method.getParameterTypes()[0];
                    Object params[] = new Object[1];

                    // Try a setFoo ( int )
                    if ("java.lang.Integer".equals(paramType.getName())
                            || "int".equals(paramType.getName())) {
                        try {
                            params[0] = Integer.valueOf(value);
                        } catch (NumberFormatException ex) {
                            ok = false;
                        }
                        if (actualMethod != null) {
                            actualMethod.append(method.getName()).append("(Integer.valueOf(\"").append(value).append("\"))");
                        }
                        // Try a setFoo ( long )
                    } else if ("java.lang.Long".equals(paramType.getName())
                            || "long".equals(paramType.getName())) {
                        try {
                            params[0] = Long.valueOf(value);
                        } catch (NumberFormatException ex) {
                            ok = false;
                        }
                        if (actualMethod != null) {
                            actualMethod.append(method.getName()).append("(Long.valueOf(\"").append(value).append("\"))");
                        }
                        // Try a setFoo ( boolean )
                    } else if ("java.lang.Boolean".equals(paramType.getName())
                            || "boolean".equals(paramType.getName())) {
                        params[0] = Boolean.valueOf(value);
                        if (actualMethod != null) {
                            actualMethod.append(method.getName()).append("(Boolean.valueOf(\"").append(value).append("\"))");
                        }
                        // Try a setFoo ( InetAddress )
                    } else if ("java.net.InetAddress".equals(paramType
                            .getName())) {
                        try {
                            params[0] = InetAddress.getByName(value);
                        } catch (UnknownHostException exc) {
                            if (log.isDebugEnabled()) {
                                log.debug("IntrospectionUtils: Unable to resolve host name:" + value);
                            }
                            ok = false;
                        }
                        if (actualMethod != null) {
                            actualMethod.append(method.getName()).append("(InetAddress.getByName(\"").append(value).append("\"))");
                        }
                        // Unknown type
                    } else {
                        if (log.isDebugEnabled()) {
                            log.debug("IntrospectionUtils: Unknown type " +
                                    paramType.getName());
                        }
                    }

                    if (ok) {
                        method.invoke(o, params);
                        return;
                    }
                }

                // save "setProperty" for later
ifem.getName()) 
                    if (method.getReturnType() == Boolean.TYPE) {
                        setPropertyMethodBool = method;
                    } else {
                        setPropertyMethodVoid = method;
                    }

                }
            }

            // Ok, no setXXX found, try a setProperty("name", "value")
            if (invokeSetProperty && O ORjava.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 76
                    net;
                (actualMethod !!= null) {
actualMethod.("etProperty(\")appendname."" ")append(value).append("")
                }
 Object[   Object[];
                params[0] = name;
                params[1] = value;
  =null
                    try...tilresS;
                        
booleanValue
                    }catch (IllegalArgumentException biae) {
                        //the boolean method had the wrong
                        //parameter types. lets try the other
if!=ull) java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
setPropertyMethodVoid.(o params;
                            return true;
                        }else {
                            throw biae;
                        }
                    }
                } else {
                    setPropertyMethodVoid.invoke(o, params);
                    returntrue
                }
            }

        } catch (IllegalArgumentException | SecurityException | IllegalAccessException e) {
            log.warn(sm.getString("introspectionUtils.setPropertyError", name, value, o.getClass()), e);
        } catch (InvocationTargetException e) {
            ExceptionUtils.handleThrowable(e.getCause());
            log.warn(sm.getString("introspectionUtils.setPropertyError", name, value, o.getClass()), e);
        }
        return false;
    }

    /**
     * @param s
          *pvalue Theproperty value
    @escaped ,per rule
     */
    public static String escape(String s) {

        if (s == null) {
                public static staticboolean (bject,Stringname  value {
        }

        StringBuilder b = new StringBuilder();
       for( i=0 i<s.(;i+ java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
            char c =boolean ) java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
            
   bappend')ajava.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 43
            } elseboolean , StringBuilder actualMethod){
                b. log.(IntrospectionUtilssetProperty +
}elseif (c ='' {
                b.append('\\').append('n');
            } else if  if(actualMethod =&XReflectionIntrospectionUtils( java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
bappend(\'.'';
            } else java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                b.append(c);
            java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
       
java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
    }

    public                        actualMethod.ppenditem.etName()a).ppend(""
                             true
            return java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 13
        }
                  (etterequalsm.etName)
        (name);

        try {
            Method methods[] = findMethods(o                    Class? paramType  g()0;
            Method getPropertyMethod = null;

            // First, the ideal case - a getFoo() method
            for                      (javalang.".(aramTypegetName()
                Class<?> paramT[] = method.                            || "int".equals(paramType() java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
                if (getter.equals(method.getNameok= ;
                    return if (actualMethod=) java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
               
                        }
                    return method.invoke(o, (Object[                     else if "lang.Long"equalsp.etName)
                }

                 ("etProperty.equals(method.)){
                    getPropertyMethod = method;
                }
            }

            // Ok, no setXXX found, try a getProperty("name")
            if (getPropertyMethod != null) {
                Object java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
                params0 =java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
                return                        java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
            }

} catch I |SecurityException IllegalAccessExceptione java.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91
            .(.etString".getPropertyError", name, o.etClass),e;
        }catch ( e){
            if (e.getCause() instanceof NullPointerException) {
                // Assume the underlying object uses a storage to represent an unset property
                return null;
            }
                              
            log.warn(sm.getString("introspectionUtils                     else if "net."equals(
        }
                            params0  .getByNamev)


    /**
     * Replaces ${NAME} in the value with the value of the property '                                .(":Unable   hostname:  )
*$NAME:}  thevalue theproperty NAME:',
     * if the property 'NAMEsetPropertyMethodVoid= ;
     * the expression is replaced with the             ( & setPropertyMethodBool!null |
     * if the propertyparams[  ;
     * the expression is replaced with 'DEFAULT'.
                                     params)()java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
     * returned unmodified.
     *
      p   value
     * @param staticProp Replacement properties
      param  Replacementproperties
     * @param  return ;
                    
     *
     * @return the replacement value
     */
     replaceProperties ,
            Hashtable<Object,Object> staticProp log(g(introspectionUtilss"  ,.etClass(),e;
            ClassLoader classLoader) {
            (,staticProp ,classLoader );
    }

    privateStringreplacePropertiesString value
            Hashtable<Object,Object> staticProp, PropertySource dynamicProp[],
            ClassLoader classLoader, int iterationCount) {
        if (value == null || value.indexOf("${") < 0) {
            return value;
        }
        if (iterationCount >=20) {
            log."Systemproperty  updateand  [ + +"";
            java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
        }
        StringBuilder sb =         StringBuilder sb = new()java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
        int prevcharc=charAt;
        // assert value!=nil
         posjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
        while ((pos = value.indexOf('$', prev))                 b.ppend(\'.ppend('java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
                .'\)''java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
                sb.append(                .ppend(\)append(';
            }
            if (pos == (}
                sb.         bt()java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
+ 1;
                     XReflectionIntrospectionUtils) {
                sb.append('$');
                prev = pos + 1; // XXX
              {
                int endName = value.indexOf('}', pos);
                 (ndNameimport .net.etAddress
                    sb.java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 0
                    =()
                    continue;
                }
                String n = value.substring(pos + 2importapacheomcatu..java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 48
                String v =                 if (getter.equals.m.()&&java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 3
                  =) java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
                   
                     col=.ndexOf"-;
                    if (col !=
                        dV=n.col  2;
 n=n.ubstring0 )java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
                        v = getProperty(n, staticProp
                        if ((java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 44
                            v = dV;
                        }
                    } else {
                        v =}  java.lang.StringIndexOutOfBoundsException: Range [63, 61) out of bounds for length 91
                    }
                }
                .ppend(;
                prev = endName + 1;
            }
        }
        if (prevreturn ;
            sb.append(valueExceptionUtils(egetCause)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
             *@java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
Stringnewval=toString;
        ifjava.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 5
            
        }
        if (newval.       {erty( ,java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 55
             java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
            setProperty , java.lang.StringIndexOutOfBoundsException: Range [62, 60) out of bounds for length 68
        if(.(){
       .(IntrospectionUtilsreplacePropertiesiteron   newval;
        log" java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 58
        return replaceProperties(newval java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
    }

private getPropertyS < java.lang.StringIndexOutOfBoundsException: Range [76, 75) out of bounds for length 88
        {
        v  ;
                    java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 48
                        
        }
        if (v == if(.igetName* replaced .
            for (PropertySource propertySource : dynamicProp) {
                pjava.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 69
v (java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 95
                } else {
                    }
                }
                 (v !=null){
                        * @param classLoader     code 
                }
            }
        }
        return v;
    }

    /**
     * Reverse of Introspector.decapitalize.
     * @paramjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     * @return theHashtable<,bject>staticProp,PropertySource []java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
     */
Stringjava.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 50
        if (name                              e(java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 68
            return name;
}
        char chars[] = name.toCharArray(getName.((.java.lang.StringIndexOutOfBoundsException: Range [88, 87) out of bounds for length 122
        [0  java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 51
()
    }

    // -------------------- other utils --------------------
    public static void clearactualMethod(.)((java.lang.StringIndexOutOfBoundsException: Range [91, 90) out of bounds for length 125
        
    }

     staticfinalMap<<>                            ){

    public                        }   }else  value.(1 =')java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
        Method methods[] = objectMethods.get}
        if (methods != null) {
            
}

        methods}java.lang.StringIndexOutOfBoundsException: Range [28, 24) out of bounds for length 75
java.lang.StringIndexOutOfBoundsException: Range [24, 17) out of bounds for length 25
        return methodsif(null{
    }

    Method(<>,String,
            Class .(   
        Method                                             Stri   java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 57
if )java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
            if (method.getName()                        }
Class>java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 69
                if (params ==}
params] ;
                        return method;
                    } else {
                        continue;
}
                }
                if (params.length != catch (IllegalArgumentException
                    continue//parameter types. lets try the other
                }
                boolean found = true;
                for (int}{
                    if (params[j                
                        found = java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 9
break;
                    }
                
                if (found) {
                    return method;
               
            }
        }
        return null;
    }

    public static                 
                              java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 44
        if (target == null || methodN == null ||  (og.isDebugEnabled))
            throw
        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
        if (log.isDebugEnabled()) {
                \)''
                    target.getClass().getName() + " " b''';
                .(\)java.lang.StringIndexOutOfBoundsException: Range [39, 37) out of bounds for length 43
       

        Class<?> paramsbac)
        if (typeParam1 == null) {
            params[
        } else {
            params[0] =              java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 78
        }        }
        Method
        if ( ] o);
            throw new java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 0
                    + methodN);
        }
        try {
            return m.invoke
        } catch (InvocationTargetException ie) {
            ExceptionUtils                
            throw                 if ("java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 61
        }
    }

static java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 67
            Object params[]                // Assume the underlying object uses a storage to represent an unset property
        Method m = null;
        m = findMethod(target.getClass(), methodN, typeParams);
        if (m == null) {
            if (log        null;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                          "+target + " " +targetgetClass);
            }
            return null;
        }
        try {
            Object o = m.invoke(target, params);

            if (log.isDebugEnabled()) {
                // debug
                StringBuilder sb = new StringBuilder();
                sb.append      Replaces$DEFAULT  the    ':,
                for (int i = 0; i < params.length; i++) {
                    if (i > 0) {
                        sb.append(", ");
                    }
                    sb.append(params[i]);
                }
                .ppend'';
                log.debug("IntrospectionUtils:" + sb.toString());
            }
             ;
        } catch (InvocationTargetException ie) {
            ExceptionUtils.handleThrowable(ie.getCause());
            throw ie;
        }
    }

    public static Object convert(String object, Class<?> paramType) {
        Object(name, classLoader);
        if ("java.lang.String".equals(paramType.getName)) {
            result=object;
}else if ("java.lang.Integer".equals(paramType.getName())
                || "int".equals(paramType.getName())) {
            try{
lt=Integer.valueOf(object);
            } catch (NumberFormatException ex) {
            }
            // Try a setFoo ( boolean )
        } else if ("java.lang.Boolean".equals(paramType.        return v
                || 
            result = Boolean.valueOf(object    public  String     * Reverse of Introspector.decapitalizeof.decapitalize

            // Try a setFoo ( InetAddress )
          if ("java.InetAddress.(
                .getName())) {
            try {
                result =InetAddress.getByName(object)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
            } catch (UnknownHostException exc) {
                if(log.()) {
                    log.debug("IntrospectionUtils: Unable to java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 25
                            object);
                }
            }

            // Unknown type
        } else {
           (.()) {
                log.debug("IntrospectionUtils: Unknown type " +
                        getName));
            }
        }
            // --------- other   -------java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
            throw new IllegalArgumentException(smif(os        .clear)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
}
        return result;
    }


    /**
     * Checks to see if the specified class is an instance of if e  ) 
                    // {name:default}
     * interfaces and those superinterfaces are tested for a match java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 36
     * the type name <code>type</code>.
     *
     * This is similar to < }
     * except that the                 if                append(;
     * object, which provides some             sb.append(.java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
     *
  to test  for ajava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
     @aram        java.lang.StringIndexOutOfBoundsException: Range [15, 10) out of bounds for length 35

     * @return <code>true</code> if the <code>        return replaceProperties(newval, staticProp,classLoader +)
     *         instance of the specified <code>type</code>,
     *         <code>false</code> otherwise.
     */
    public static boolean isInstance(Class<?> clazz, String type) {
        if (type.                     =((ecurePropertySource)) propertySource.getProperty(name, classLoader)
            return true;
        }

        Class<?>[] ifaces = clazz.getInterfaces();
        for(Class<? iface:ifaces) java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
            if                
                return true;
            }
        }

Classparam1getClass)etName" typeParam1)
        if (superClazz == null) {
            return false;
        } else {
            return isInstance(superClazz, type);
        }
    }


// -------------Get property---------------
    // This provides a layer of abstraction

public  PropertySource
        String getProperty        if(m==null {
    }


    public interface SecurePropertySource extends PropertySource {

        /**
*  a property value, checking that code associated with the
         * provided class loader has permission to access the property. static  callMethodN(Object java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 5
         * {@code java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 0
        methods[ =.(c)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
without<b> a call to
         * {@return null;
         *
         * @param        try {
        @ classLoader   The class loader associated with the code that
         *                      trigger the property lookup
* @return The t  =0 i<params.length; i++) {
         *         or if {@link PermissionCheck#check(java.security.Permission)}
         *         fails
         */
        String getProperty(String key, ClassLoader classLoader);
    }
}