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## 内容1
### 文件路径：
jboss-seam-remoting/src/main/java/org/jboss/seam/remoting/ExecutionHandler.java
### 代码内容：
package org.jboss.seam.remoting;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.jboss.seam.contexts.RemotingLifecycle;
import org.jboss.seam.core.ConversationPropagation;
import org.jboss.seam.core.Manager;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
import org.jboss.seam.remoting.wrapper.Wrapper;
import org.jboss.seam.servlet.ContextualHttpServletRequest;

/**
 * Unmarshals the calls from an HttpServletRequest, executes them in order and
 * marshals the responses.
 *
 * @author Shane Bryzak
 */
public class ExecutionHandler extends BaseRequestHandler implements RequestHandler
{
   private static final LogProvider log = Logging.getLogProvider(ExecutionHandler.class);

  private static final byte[] HEADER_OPEN = "<header>".getBytes();
  private static final byte[] HEADER_CLOSE = "</header>".getBytes();
  private static final byte[] CONVERSATION_ID_TAG_OPEN = "<conversationId>".getBytes();
  private static final byte[] CONVERSATION_ID_TAG_CLOSE = "</conversationId>".getBytes();

  private static final byte[] CONTEXT_TAG_OPEN = "<context>".getBytes();
  private static final byte[] CONTEXT_TAG_CLOSE = "</context>".getBytes();

  /**
   * The entry point for handling a request.
   *
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @throws Exception
   */
  public void handle(HttpServletRequest request, final HttpServletResponse response)
      throws Exception
  {
      // We're sending an XML response, so set the response content type to text/xml
      response.setContentType("text/xml");

      ByteArrayOutputStream out = new ByteArrayOutputStream();

      byte[] buffer = new byte[256];
      int read = request.getInputStream().read(buffer);
      while (read != -1)
      {
         out.write(buffer, 0, read);
         read = request.getInputStream().read(buffer);
      }

      String requestData = new String(out.toByteArray());
      log.debug("Processing remote request: " + requestData);

      // Parse the incoming request as XML
      SAXReader xmlReader = new SAXReader();
      Document doc = xmlReader.read( new StringReader(requestData) );
      final Element env = doc.getRootElement();
      final RequestContext ctx = unmarshalContext(env);

      // TODO - we really want to extract the page context from our request
      RemotingLifecycle.restorePageContext();

      new ContextualHttpServletRequest(request)
      {
         @Override
         public void process() throws Exception
         {
            // Extract the calls from the request
            List<Call> calls = unmarshalCalls(env);

            // Execute each of the calls
            for (Call call : calls)
            {
               call.execute();
            }

            // Store the conversation ID in the outgoing context
            ctx.setConversationId( Manager.instance().getCurrentConversationId() );

            // Package up the response
            marshalResponse(calls, ctx, response.getOutputStream());
         }

         @Override
         protected void restoreConversationId()
         {
            ConversationPropagation.instance().setConversationId( ctx.getConversationId() );
         }

         @Override
         protected void handleConversationPropagation() {}

      }.run();

  }

  /**
   * Unmarshals the context from the request envelope header.
   *
   * @param env Element
   * @return RequestContext
   */
  private RequestContext unmarshalContext(Element env)
  {
    RequestContext ctx = new RequestContext();

    Element header = env.element("header");
    if (header != null)
    {
      Element context = header.element("context");
      if (context != null)
      {

        Element convId = context.element("conversationId");
        if (convId != null)
        {
          ctx.setConversationId(convId.getText());
        }
      }
    }

    return ctx;
  }

  /**
   * Unmarshal the request into a list of Calls.
   *
   * @param env Element
   * @throws Exception
   */
  private List<Call> unmarshalCalls(Element env) throws Exception
  {
    try
    {
      List<Call> calls = new ArrayList<Call>();

      List<Element> callElements = env.element("body").elements("call");

      for (Element e : callElements)
      {
        Call call = new Call(e.attributeValue("id"),
                             e.attributeValue("component"),
                             e.attributeValue("method"));

        // First reconstruct all the references
        Element refsNode = e.element("refs");

        Iterator iter = refsNode.elementIterator("ref");
        while (iter.hasNext())
        {
          call.getContext().createWrapperFromElement((Element) iter.next());
        }

        // Now unmarshal the ref values
        for (Wrapper w : call.getContext().getInRefs().values())
        {
          w.unmarshal();
        }

        Element paramsNode = e.element("params");

        // Then process the param values
        iter = paramsNode.elementIterator("param");
        while (iter.hasNext())
        {
          Element param = (Element) iter.next();

          call.addParameter(call.getContext().createWrapperFromElement(
            (Element) param.elementIterator().next()));
        }

        calls.add(call);
      }

      return calls;
    }
    catch (Exception ex)
    {
      log.error("Error unmarshalling calls from request", ex);
      throw ex;
    }
  }

  /**
   * Write the results to the output stream.
   *
   * @param calls List The list of calls to write
   * @param out OutputStream The stream to write to
   * @throws IOException
   */
  private void marshalResponse(List<Call> calls, RequestContext ctx, OutputStream out)
      throws IOException
  {
    out.write(ENVELOPE_TAG_OPEN);

    if (ctx.getConversationId() != null)
    {
      out.write(HEADER_OPEN);
      out.write(CONTEXT_TAG_OPEN);
      out.write(CONVERSATION_ID_TAG_OPEN);
      out.write(ctx.getConversationId().getBytes());
      out.write(CONVERSATION_ID_TAG_CLOSE);
      out.write(CONTEXT_TAG_CLOSE);
      out.write(HEADER_CLOSE);
    }

    out.write(BODY_TAG_OPEN);

    for (Call call : calls)
    {
      MarshalUtils.marshalResult(call, out);
    }

    out.write(BODY_TAG_CLOSE);
    out.write(ENVELOPE_TAG_CLOSE);
    out.flush();
  }
}

## 内容2
### 文件路径：
jboss-seam-remoting/src/main/java/org/jboss/seam/remoting/InterfaceGenerator.java
### 代码内容：
package org.jboss.seam.remoting;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jboss.seam.Component;
import org.jboss.seam.ComponentType;
import org.jboss.seam.Seam;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.remoting.WebRemote;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
import org.jboss.seam.servlet.ContextualHttpServletRequest;
import org.jboss.seam.util.EJB;
import org.jboss.seam.util.Reflections;
import org.jboss.seam.web.ServletContexts;

/**
 * Generates JavaScript interface code.
 *
 * @author Shane Bryzak
 */
public class InterfaceGenerator extends BaseRequestHandler implements RequestHandler
{
   private static final LogProvider log = Logging.getLogProvider(InterfaceGenerator.class);

  /**
   * Maintain a cache of the accessible fields
   */
  private static Map<Class,Set<String>> accessibleProperties = new HashMap<Class,Set<String>>();

  /**
   * A cache of component interfaces, keyed by component name.
   */
  private Map<String,byte[]> interfaceCache = new HashMap<String,byte[]>();

  /**
   *
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @throws Exception
   */
  public void handle(final HttpServletRequest request, final HttpServletResponse response)
      throws Exception
  {
     new ContextualHttpServletRequest(request)
     {
        @Override
        public void process() throws Exception
        {
           ServletContexts.instance().setRequest(request);

           if (request.getQueryString() == null)
           {
              throw new ServletException("Invalid request - no component specified");
           }

           Set<Component> components = new HashSet<Component>();
           Set<Type> types = new HashSet<Type>();

           response.setContentType("text/javascript");

           Enumeration e = request.getParameterNames();
           while (e.hasMoreElements())
           {
              String componentName = ((String) e.nextElement()).trim();

              Component component = Component.forName(componentName);
              if (component == null)
              {
                 try
                 {
                    Class c = Reflections.classForName(componentName);
                    appendClassSource(response.getOutputStream(), c, types);
                 }
                 catch (ClassNotFoundException ex)
                 {
                    log.error(String.format("Component not found: [%s]", componentName));
                    throw new ServletException("Invalid request - component not found.");
                 }
              }
              else
              {
                 components.add(component);
              }
           }

           generateComponentInterface(components, response.getOutputStream(), types);
       }
     }.run();
  }

  /**
   * Generates the JavaScript code required to invoke the methods of a component/s.
   *
   * @param components Component[] The components to generate javascript for
   * @param out OutputStream The OutputStream to write the generated javascript to
   * @throws IOException Thrown if there is an error writing to the OutputStream
   */
  public void generateComponentInterface(Set<Component> components, OutputStream out, Set<Type> types)
      throws IOException
  {
    for (Component c : components)
    {
      if (c != null)
      {
        if (!interfaceCache.containsKey(c.getName()))
        {
          synchronized (interfaceCache)
          {
            if (!interfaceCache.containsKey(c.getName()))
            {
              ByteArrayOutputStream bOut = new ByteArrayOutputStream();
              appendComponentSource(bOut, c, types);
              interfaceCache.put(c.getName(), bOut.toByteArray());
            }
          }
        }
        out.write(interfaceCache.get(c.getName()));
      }
    }
  }

  /**
   * A helper method, used internally by InterfaceGenerator and also when
   * serializing responses.  Returns a list of the property names for the specified
   * class which should be included in the generated interface for the type.
   *
   * @param cls Class
   * @return List
   */
  public static Set<String> getAccessibleProperties(Class cls)
  {
    /** @todo This is a hack to get the "real" class - find out if there is
              an API method in CGLIB that can be used instead */
    if (cls.getName().contains("EnhancerByCGLIB"))
      cls = cls.getSuperclass();

    if (!accessibleProperties.containsKey(cls))
    {
      synchronized(accessibleProperties)
      {
        if (!accessibleProperties.containsKey(cls))
        {
          Set<String> properties = new HashSet<String>();

          Class c = cls;
          while (c != null && !c.equals(Object.class))
          {
            for (Field f : c.getDeclaredFields())
            {
              if (!Modifier.isTransient(f.getModifiers()) &&
                  !Modifier.isStatic(f.getModifiers()))
              {
                String fieldName = f.getName().substring(0, 1).toUpperCase() +
                    f.getName().substring(1);
                String getterName = String.format("get%s", fieldName);
                String setterName = String.format("set%s", fieldName);
                Method getMethod = null;
                Method setMethod = null;

                try
                {
                  getMethod = c.getMethod(getterName);
                }
                catch (SecurityException ex)
                {}
                catch (NoSuchMethodException ex)
                {
                  // it might be an "is" method...
                  getterName = String.format("is%s", fieldName);
                  try
                  {
                    getMethod = c.getMethod(getterName);
                  }
                  catch (NoSuchMethodException ex2)
                  { /* don't care */}
                }

                try
                {
                  setMethod = c.getMethod(setterName, new Class[] {f.getType()});
                }
                catch (SecurityException ex)
                {}
                catch (NoSuchMethodException ex)
                { /* don't care */}

                if (Modifier.isPublic(f.getModifiers()) ||
                    (getMethod != null &&
                     Modifier.isPublic(getMethod.getModifiers()) ||
                     (setMethod != null &&
                      Modifier.isPublic(setMethod.getModifiers()))))
                {
                  properties.add(f.getName());
                }
              }
            }

            //
            for (Method m : c.getDeclaredMethods())
            {
              if (m.getName().startsWith("get") || m.getName().startsWith("is"))
              {
                int startIdx = m.getName().startsWith("get") ? 3 : 2;

                try
                {
                  c.getMethod(String.format("set%s",
                                            m.getName().substring(startIdx)), m.getReturnType());
                }
                catch (NoSuchMethodException ex)
                {
                  continue;
                }

                String propertyName = String.format("%s%s",
                    Character.toLowerCase(m.getName().charAt(startIdx)),
                    m.getName().substring(startIdx + 1));

                if (!properties.contains(propertyName))
                  properties.add(propertyName);
              }
            }

            c = c.getSuperclass();
          }

          accessibleProperties.put(cls, properties);
        }
      }
    }

    return accessibleProperties.get(cls);
  }

  /**
   * Appends component interface code to an outputstream for a specified component.
   *
   * @param out OutputStream The OutputStream to write to
   * @param component Component The component to generate an interface for
   * @param types Set A list of types that have already been generated for this
   * request.  If this component has already been generated (i.e. it is in the list)
   * then it won't be generated again
   * @throws IOException If there is an error writing to the OutputStream.
   */
  private void appendComponentSource(OutputStream out, Component component, Set<Type> types)
      throws IOException
  {
    StringBuilder componentSrc = new StringBuilder();

    Set<Class> componentTypes = new HashSet<Class>();

    if (component.getType().isSessionBean() &&
        component.getBusinessInterfaces().size() > 0)
    {
      for (Class c : component.getBusinessInterfaces())
      {
         // Use the Local interface
         if (c.isAnnotationPresent(EJB.LOCAL))
         {
            componentTypes.add(c);
            break;
         }
      }

      if (componentTypes.isEmpty())
        throw new RuntimeException(String.format(
        "Type cannot be determined for component [%s]. Please ensure that it has a local interface.", component));
    }
    else if (component.getType().equals(ComponentType.ENTITY_BEAN))
    {
      appendTypeSource(out, component.getBeanClass(), types);
      return;
    }
    else if (component.getType().equals(ComponentType.JAVA_BEAN))
    {
      // Check if any of the methods are annotated with @WebRemote, and if so
      // treat it as an "action" component instead of a type component
      for (Method m : component.getBeanClass().getDeclaredMethods())
      {
        if (m.getAnnotation(WebRemote.class) != null)
        {
          componentTypes.add(component.getBeanClass());
          break;
        }
      }

      if (componentTypes.isEmpty())
      {
        appendTypeSource(out, component.getBeanClass(), types);
        return;
      }
    }
    else
    {
      componentTypes.add(component.getBeanClass());
    }

    // If types already contains all the component types, then return
    boolean foundNew = false;
    for (Class type : componentTypes)
    {
      if (!types.contains(type))
      {
         foundNew = true;
         break;
      }
    }
    if (!foundNew) return;

    if (component.getName().contains("."))
    {
       componentSrc.append("Seam.Remoting.createNamespace('");
       componentSrc.append(component.getName().substring(0, component.getName().lastIndexOf('.')));
       componentSrc.append("');\n");

    }

    componentSrc.append("Seam.Remoting.type.");
    componentSrc.append(component.getName());
    componentSrc.append(" = function() {\n");
    componentSrc.append("  this.__callback = new Object();\n");

    for (Class type : componentTypes)
    {
       if (types.contains(type))
       {
          break;
       }
       else
       {
          types.add(type);

          for (Method m : type.getDeclaredMethods())
          {
            if (m.getAnnotation(WebRemote.class) == null) continue;

            // Append the return type to the source block
            appendTypeSource(out, m.getGenericReturnType(), types);

            componentSrc.append("  Seam.Remoting.type.");
            componentSrc.append(component.getName());
            componentSrc.append(".prototype.");
            componentSrc.append(m.getName());
            componentSrc.append(" = function(");

            // Insert parameters p0..pN
            for (int i = 0; i < m.getGenericParameterTypes().length; i++)
            {
              appendTypeSource(out, m.getGenericParameterTypes()[i], types);

              if (i > 0) componentSrc.append(", ");
              componentSrc.append("p");
              componentSrc.append(i);
            }

            if (m.getGenericParameterTypes().length > 0) componentSrc.append(", ");
            componentSrc.append("callback, exceptionHandler) {\n");

            componentSrc.append("    return Seam.Remoting.execute(this, \"");
            componentSrc.append(m.getName());
            componentSrc.append("\", [");

            for (int i = 0; i < m.getParameterTypes().length; i++)
            {
              if (i > 0) componentSrc.append(", ");
              componentSrc.append("p");
              componentSrc.append(i);
            }

            componentSrc.append("], callback, exceptionHandler);\n");

            componentSrc.append("  }\n");
          }
       }
       componentSrc.append("}\n");

       // Set the component name
       componentSrc.append("Seam.Remoting.type.");
       componentSrc.append(component.getName());
       componentSrc.append(".__name = \"");
       componentSrc.append(component.getName());
       componentSrc.append("\";\n\n");

       // Register the component
       componentSrc.append("Seam.Component.register(Seam.Remoting.type.");
       componentSrc.append(component.getName());
       componentSrc.append(");\n\n");

       out.write(componentSrc.toString().getBytes());
    }
  }

  /**
   * Append Javascript interface code for a specified class to a block of code.
   *
   * @param source StringBuilder The code block to append to
   * @param type Class The type to generate a Javascript interface for
   * @param types Set A list of the types already generated (only include each type once).
   */
  private void appendTypeSource(OutputStream out, Type type, Set<Type> types)
      throws IOException
  {
    if (type instanceof Class)
    {
      Class classType = (Class) type;

      if (classType.isArray())
      {
        appendTypeSource(out, classType.getComponentType(), types);
        return;
      }

      if (classType.getName().startsWith("java.") ||
          types.contains(type) || classType.isPrimitive())
      return;

      // Keep track of which types we've already added
      types.add(type);

      appendClassSource(out, classType, types);
    }
    else if (type instanceof ParameterizedType)
    {
      for (Type t : ((ParameterizedType) type).getActualTypeArguments())
        appendTypeSource(out, t, types);
    }
  }

  /**
   * Appends the interface code for a non-component class to an OutputStream.
   *
   * @param out OutputStream
   * @param classType Class
   * @param types Set
   * @throws IOException
   */
  private void appendClassSource(OutputStream out, Class classType, Set<Type> types)
      throws IOException
  {
    // Don't generate interfaces for enums
    if (classType.isEnum())
      return;

    StringBuilder typeSource = new StringBuilder();

    // Determine whether this class is a component; if so, use its name
    // otherwise use its class name.
    String componentName = Seam.getComponentName(classType);
    if (componentName == null)
      componentName = classType.getName();

    String typeName = componentName.replace('.', '$');

    typeSource.append("Seam.Remoting.type.");
    typeSource.append(typeName);
    typeSource.append(" = function() {\n");

    StringBuilder fields = new StringBuilder();
    StringBuilder accessors = new StringBuilder();
    StringBuilder mutators = new StringBuilder();
    Map<String,String> metadata = new HashMap<String,String>();

    String getMethodName = null;
    String setMethodName = null;

    for ( String propertyName : getAccessibleProperties(classType) )
    {
      Type propertyType = null;

      Field f = null;
      try
      {
        f = classType.getDeclaredField(propertyName);
        propertyType = f.getGenericType();
      }
      catch (NoSuchFieldException ex)
      {
        setMethodName = String.format("set%s%s",
            Character.toUpperCase(propertyName.charAt(0)),
              propertyName.substring(1));

        try
        {
          getMethodName = String.format("get%s%s",
              Character.toUpperCase(propertyName.charAt(0)),
              propertyName.substring(1));
          propertyType = classType.getMethod(getMethodName).getGenericReturnType();
        }
        catch (NoSuchMethodException ex2)
        {
          try
          {
            getMethodName = String.format("is%s%s",
                Character.toUpperCase(propertyName.charAt(0)),
                propertyName.substring(1));

            propertyType = classType.getMethod(getMethodName).getGenericReturnType();
          }
          catch (NoSuchMethodException ex3)
          {
            // ???
            continue;
          }
        }
      }

      appendTypeSource(out, propertyType, types);

      // Include types referenced by generic declarations
      if (propertyType instanceof ParameterizedType)
      {
        for (Type t : ((ParameterizedType) propertyType).getActualTypeArguments())
        {
          if (t instanceof Class)
            appendTypeSource(out, t, types);
        }
      }

      if (f != null)
      {
        String fieldName = propertyName.substring(0, 1).toUpperCase() +
            propertyName.substring(1);
        String getterName = String.format("get%s", fieldName);
        String setterName = String.format("set%s", fieldName);

        try
        {
          classType.getMethod(getterName);
          getMethodName = getterName;
        }
        catch (SecurityException ex){}
        catch (NoSuchMethodException ex)
        {
          getterName = String.format("is%s", fieldName);
          try
          {
            if (Modifier.isPublic(classType.getMethod(getterName).getModifiers()))
              getMethodName = getterName;
          }
          catch (NoSuchMethodException ex2)
          { /* don't care */}
        }

        try
        {
          if (Modifier.isPublic(classType.getMethod(setterName, f.getType()).getModifiers()))
            setMethodName = setterName;
        }
        catch (SecurityException ex) {}
        catch (NoSuchMethodException ex) { /* don't care */}
      }

      // Construct the list of fields.
      if (getMethodName != null || setMethodName != null)
      {
        metadata.put(propertyName, getFieldType(propertyType));

        fields.append("  this.");
        fields.append(propertyName);
        fields.append(" = undefined;\n");

        if (getMethodName != null)
        {
          accessors.append("  Seam.Remoting.type.");
          accessors.append(typeName);
          accessors.append(".prototype.");
          accessors.append(getMethodName);
          accessors.append(" = function() { return this.");
          accessors.append(propertyName);
          accessors.append("; }\n");
        }

        if (setMethodName != null)
        {
          mutators.append("  Seam.Remoting.type.");
          mutators.append(typeName);
          mutators.append(".prototype.");
          mutators.append(setMethodName);
          mutators.append(" = function(");
          mutators.append(propertyName);
          mutators.append(") { this.");
          mutators.append(propertyName);
          mutators.append(" = ");
          mutators.append(propertyName);
          mutators.append("; }\n");
        }
      }
    }

    typeSource.append(fields);
    typeSource.append(accessors);
    typeSource.append(mutators);

    typeSource.append("}\n\n");

    // Append the type name
    typeSource.append("Seam.Remoting.type.");
    typeSource.append(typeName);
    typeSource.append(".__name = \"");
    typeSource.append(componentName);
    typeSource.append("\";\n");

    // Append the metadata
    typeSource.append("Seam.Remoting.type.");
    typeSource.append(typeName);
    typeSource.append(".__metadata = [\n");

    boolean first = true;

    for (String key : metadata.keySet())
    {
      if (!first)
        typeSource.append(",\n");

      typeSource.append("  {field: \"");
      typeSource.append(key);
      typeSource.append("\", type: \"");
      typeSource.append(metadata.get(key));
      typeSource.append("\"}");

      first = false;
    }

    typeSource.append("];\n\n");

    // Register the type under Seam.Component if it is a component, otherwise
    // register it under Seam.Remoting

    if (classType.isAnnotationPresent(Name.class))
      typeSource.append("Seam.Component.register(Seam.Remoting.type.");
    else
      typeSource.append("Seam.Remoting.registerType(Seam.Remoting.type.");

    typeSource.append(typeName);
    typeSource.append(");\n\n");

    out.write(typeSource.toString().getBytes());
  }

  /**
   * Returns the remoting "type" for a specified class.
   *
   * @param type Class
   * @return String
   */
  protected String getFieldType(Type type)
  {
    if (type.equals(String.class) ||
        (type instanceof Class && ( (Class) type).isEnum()) ||
        type.equals(BigInteger.class) || type.equals(BigDecimal.class))
      return "str";
    else if (type.equals(Boolean.class) || type.equals(Boolean.TYPE))
      return "bool";
    else if (type.equals(Short.class) || type.equals(Short.TYPE) ||
             type.equals(Integer.class) || type.equals(Integer.TYPE) ||
             type.equals(Long.class) || type.equals(Long.TYPE) ||
             type.equals(Float.class) || type.equals(Float.TYPE) ||
             type.equals(Double.class) || type.equals(Double.TYPE) ||
             type.equals(Byte.class) || type.equals(Byte.TYPE))
      return "number";
    else if (type instanceof Class)
    {
      Class cls = (Class) type;
      if (Date.class.isAssignableFrom(cls) || Calendar.class.isAssignableFrom(cls))
        return "date";
      else if (cls.isArray())
        return "bag";
      else if (cls.isAssignableFrom(Map.class))
        return "map";
      else if (cls.isAssignableFrom(Collection.class))
        return "bag";
    }
    else if (type instanceof ParameterizedType)
    {
      ParameterizedType pt = (ParameterizedType) type;

      if (pt.getRawType() instanceof Class && Map.class.isAssignableFrom((Class) pt.getRawType()))
        return "map";
      else if (pt.getRawType() instanceof Class && Collection.class.isAssignableFrom((Class) pt.getRawType()))
        return "bag";
    }

    return "bean";
  }
}

## 内容3
### 文件路径：
jboss-seam-remoting/src/main/java/org/jboss/seam/remoting/PollHandler.java
### 代码内容：
package org.jboss.seam.remoting;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.ObjectMessage;
import javax.jms.TextMessage;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
import org.jboss.seam.remoting.messaging.PollError;
import org.jboss.seam.remoting.messaging.PollRequest;
import org.jboss.seam.remoting.wrapper.Wrapper;
import org.jboss.seam.servlet.ContextualHttpServletRequest;

/**
 * Handles JMS Message poll requests.
 *
 * @author Shane Bryzak
 */
public class PollHandler extends BaseRequestHandler implements RequestHandler
{
  private static final LogProvider log = Logging.getLogProvider(SubscriptionHandler.class);

  private static final byte[] ERRORS_TAG_OPEN_START = "<errors token=\"".getBytes();
  private static final byte[] ERRORS_TAG_OPEN_END = "\">".getBytes();

  private static final byte[] ERROR_TAG_OPEN_START = "<error code=\"".getBytes();
  private static final byte[] ERROR_TAG_OPEN_END = "\">".getBytes();
  private static final byte[] ERROR_TAG_CLOSE = "</error>".getBytes();

  private static final byte[] MESSAGES_TAG_OPEN_START = "<messages token=\"".getBytes();
  private static final byte[] MESSAGES_TAG_OPEN_END = "\">".getBytes();
  private static final byte[] MESSAGES_TAG_CLOSE = "</messages>".getBytes();

  private static final byte[] MESSAGE_TAG_OPEN_START = "<message type=\"".getBytes();
  private static final byte[] MESSAGE_TAG_OPEN_END = "\">".getBytes();
  private static final byte[] MESSAGE_TAG_CLOSE = "</message>".getBytes();

  private static final byte[] VALUE_TAG_OPEN = "<value>".getBytes();
  private static final byte[] VALUE_TAG_CLOSE = "</value>".getBytes();

  public void handle(HttpServletRequest request, final HttpServletResponse response)
      throws Exception
  {
    // We're sending an XML response, so set the response content type to text/xml
    response.setContentType("text/xml");

    // Parse the incoming request as XML
    SAXReader xmlReader = new SAXReader();
    Document doc = xmlReader.read(request.getInputStream());
    Element env = doc.getRootElement();

    final List<PollRequest> polls = unmarshalRequests(env);

    new ContextualHttpServletRequest(request)
    {
       @Override
       public void process() throws Exception
       {
          for (PollRequest req : polls)
          {
             req.poll();
          }

          // Package up the response
          marshalResponse(polls, response.getOutputStream());
       }
    }.run();
  }

  private List<PollRequest> unmarshalRequests(Element env)
      throws Exception
  {
    try
    {
      List<PollRequest> requests = new ArrayList<PollRequest>();

      List<Element> requestElements = env.element("body").elements("poll");
      for (Element e : requestElements)
      {
        requests.add(new PollRequest(e.attributeValue("token"),
                                     Integer.parseInt(e.attributeValue("timeout"))));
      }

      return requests;
    }
    catch (Exception ex)
    {
      log.error("Error unmarshalling subscriptions from request", ex);
      throw ex;
    }
  }

  private void marshalResponse(List<PollRequest> reqs, OutputStream out)
      throws IOException
  {
    out.write(ENVELOPE_TAG_OPEN);
    out.write(BODY_TAG_OPEN);

    for (PollRequest req : reqs)
    {
      if (req.getErrors() != null && req.getErrors().size() > 0)
      {
        out.write(ERRORS_TAG_OPEN_START);
        out.write(req.getToken().getBytes());
        out.write(ERRORS_TAG_OPEN_END);
        for (PollError err : req.getErrors())
        {
          writeError(err, out);
        }
      }
      else  if (req.getMessages() != null && req.getMessages().size() > 0)
      {
        out.write(MESSAGES_TAG_OPEN_START);
        out.write(req.getToken().getBytes());
        out.write(MESSAGES_TAG_OPEN_END);
        for (Message m : req.getMessages()) {
          try {
            writeMessage(m, out);
          }
          catch (JMSException ex) {
          }
          catch (IOException ex) {
          }
        }
        out.write(MESSAGES_TAG_CLOSE);
      }
    }

    out.write(BODY_TAG_CLOSE);
    out.write(ENVELOPE_TAG_CLOSE);
    out.flush();
  }

  private void writeMessage(Message m, OutputStream out)
      throws IOException, JMSException
  {
    out.write(MESSAGE_TAG_OPEN_START);

    // We need one of these to maintain a list of outbound references
    CallContext ctx = new CallContext();
    Object value = null;

    if (m instanceof TextMessage)
    {
      out.write("text".getBytes());
      value = ((TextMessage) m).getText();
    }
    else if (m instanceof ObjectMessage)
    {
      out.write("object".getBytes());
      value = ((ObjectMessage) m).getObject();
    }

    out.write(MESSAGE_TAG_OPEN_END);

    out.write(VALUE_TAG_OPEN);
    ctx.createWrapperFromObject(value, "").marshal(out);
    out.write(VALUE_TAG_CLOSE);

    out.write(REFS_TAG_OPEN);

    // Using a for-loop, because stuff can get added to outRefs as we recurse the object graph
    for (int i = 0; i < ctx.getOutRefs().size(); i++)
    {
      Wrapper wrapper = ctx.getOutRefs().get(i);

      out.write(REF_TAG_OPEN_START);
      out.write(Integer.toString(i).getBytes());
      out.write(REF_TAG_OPEN_END);

      wrapper.serialize(out);

      out.write(REF_TAG_CLOSE);
    }

    out.write(REFS_TAG_CLOSE);

    out.write(MESSAGE_TAG_CLOSE);
  }

  private void writeError(PollError error, OutputStream out)
      throws IOException
  {
    out.write(ERROR_TAG_OPEN_START);
    out.write(error.getCode().getBytes());
    out.write(ERROR_TAG_OPEN_END);
    out.write(error.getMessage().getBytes());
    out.write(ERROR_TAG_CLOSE);
  }
}

## 内容4
### 文件路径：
jboss-seam-remoting/src/main/java/org/jboss/seam/remoting/SubscriptionHandler.java
### 代码内容：
package org.jboss.seam.remoting;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.jboss.seam.contexts.Lifecycle;
import org.jboss.seam.contexts.ServletLifecycle;
import org.jboss.seam.core.Manager;
import org.jboss.seam.remoting.messaging.RemoteSubscriber;
import org.jboss.seam.remoting.messaging.SubscriptionRegistry;
import org.jboss.seam.remoting.messaging.SubscriptionRequest;
import org.jboss.seam.web.ServletContexts;

/**
 *
 * @author Shane Bryzak
 */
public class SubscriptionHandler extends BaseRequestHandler implements RequestHandler
{

  /**
   * The entry point for handling a request.
   *
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @throws Exception
   */
  public void handle(HttpServletRequest request, HttpServletResponse response)
      throws Exception
  {
    // We're sending an XML response, so set the response content type to text/xml
    response.setContentType("text/xml");

    // Parse the incoming request as XML
    SAXReader xmlReader = new SAXReader();
    Document doc = xmlReader.read(request.getInputStream());
    Element env = doc.getRootElement();

    Element body = env.element("body");

    // First handle any new subscriptions
    List<SubscriptionRequest> requests = new ArrayList<SubscriptionRequest>();

    List<Element> elements = body.elements("subscribe");
    for (Element e : elements)
    {
      requests.add(new SubscriptionRequest(e.attributeValue("topic")));
    }

    ServletLifecycle.beginRequest(request);
    try
    {
      ServletContexts.instance().setRequest(request);

      Manager.instance().initializeTemporaryConversation();
      ServletLifecycle.resumeConversation(request);

      for (SubscriptionRequest req : requests)
      {
        req.subscribe();
      }

      // Then handle any unsubscriptions
      List<String> unsubscribeTokens = new ArrayList<String>();

      elements = body.elements("unsubscribe");
      for (Element e : elements)
      {
        unsubscribeTokens.add(e.attributeValue("token"));
      }

      for (String token : unsubscribeTokens)
      {
        RemoteSubscriber subscriber = SubscriptionRegistry.instance().
                                      getSubscription(token);
        if (subscriber != null)
        {
          subscriber.unsubscribe();
        }
      }
    }
    finally
    {
      Lifecycle.endRequest();
    }

    // Package up the response
    marshalResponse(requests, response.getOutputStream());
  }

  private void marshalResponse(List<SubscriptionRequest> requests, OutputStream out)
      throws IOException
  {
    out.write(ENVELOPE_TAG_OPEN);
    out.write(BODY_TAG_OPEN);

    for (SubscriptionRequest req : requests)
    {
      req.marshal(out);
    }

    out.write(BODY_TAG_CLOSE);
    out.write(ENVELOPE_TAG_CLOSE);
    out.flush();
  }

}

## 内容5
### 文件路径：
jboss-seam/src/main/java/org/jboss/seam/util/XML.java
### 代码内容：
package org.jboss.seam.util;

import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.UnknownHostException;

import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class XML
{
    public static Element getRootElement(InputStream stream) throws DocumentException
    {
        try {
            SAXReader saxReader = new SAXReader();
            saxReader.setEntityResolver(new DTDEntityResolver());
            saxReader.setMergeAdjacentText(true);
            return saxReader.read(stream).getRootElement();
        } catch (DocumentException e) {
            Throwable nested = e.getNestedException();
            if (nested!= null) {
                if (nested instanceof FileNotFoundException) {
                    throw new RuntimeException("Can't find schema/DTD reference: " +
                            nested.getMessage(), e);
                } else if (nested instanceof UnknownHostException) {
                    throw new RuntimeException("Cannot connect to host from schema/DTD reference: " +
                            nested.getMessage() +
                            " - check that your schema/DTD reference is current", e);
                }
            }
            throw e;
        }
    }

   /**
    * Parses an XML document safely, as to not resolve any external DTDs
    */
   public static Element getRootElementSafely(InputStream stream)
       throws DocumentException
   {
       SAXReader saxReader = new SAXReader();
       saxReader.setEntityResolver(new NullEntityResolver());
       saxReader.setMergeAdjacentText(true);
       return saxReader.read(stream).getRootElement();
   }

   public static class NullEntityResolver
       implements EntityResolver
   {
       private static final byte[] empty = new byte[0];

       public InputSource resolveEntity(String systemId, String publicId)
           throws SAXException,
                  IOException
       {
           return new InputSource(new ByteArrayInputStream(empty));
       }

   }
}

Output:
【漏洞类型】XML外部实体（XXE）攻击
【严重性】High
【漏洞摘要】此代码中的XML解析器在处理用户输入的XML数据时，没有禁用外部实体解析功能。这种情况下，攻击者可以利用XXE攻击读取或写入服务器上的任意文件，甚至发起远程代码执行攻击，导致严重的安全问题。
【关键代码模式】SAXReader xmlReader = new SAXReader();
xmlReader.read(new StringReader(requestData));
【修复方法说明】通过调用XML.getSafeSaxReader()方法来禁用XXE攻击，确保SAXReader实例在解析XML时不会解析外部实体。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
core/src/main/java/hudson/cli/CreateJobCommand.java
### 代码内容：
package hudson.cli;

import hudson.model.ModifiableItemGroup;
import hudson.model.TopLevelItem;
import jenkins.model.Jenkins;
import hudson.Extension;
import hudson.model.Item;
import jenkins.model.ModifiableTopLevelItemGroup;
import org.kohsuke.args4j.Argument;

/**
 * Creates a new job by reading stdin as a configuration XML file.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class CreateJobCommand extends CLICommand {
    @Override
    public String getShortDescription() {
        return Messages.CreateJobCommand_ShortDescription();
    }

    @Argument(metaVar="NAME",usage="Name of the job to create",required=true)
    public String name;

    protected int run() throws Exception {
        Jenkins h = Jenkins.getInstance();
        h.checkPermission(Item.CREATE);

        if (h.getItemByFullName(name)!=null) {
            stderr.println("Job '"+name+"' already exists");
            return -1;
        }

        ModifiableTopLevelItemGroup ig = h;
        int i = name.lastIndexOf('/');
        if (i > 0) {
            String group = name.substring(0, i);
            Item item = h.getItemByFullName(group);
            if (item == null) {
                throw new IllegalArgumentException("Unknown ItemGroup " + group);
            }

            if (item instanceof ModifiableTopLevelItemGroup) {
                ig = (ModifiableTopLevelItemGroup) item;
            } else {
                throw new IllegalArgumentException("Can't create job from CLI in " + group);
            }
            name = name.substring(i + 1);
        }

        ig.createProjectFromXML(name, stdin);
        return 0;
    }
}

Output:
【漏洞类型】未验证的用户输入
【严重性】Medium
【漏洞摘要】此代码允许通过命令行接口（CLI）创建一个新作业，但未对输入的作业名称进行安全性验证。攻击者可以通过提交恶意的作业名称来利用此漏洞，可能导致路径遍历攻击或其他形式的目录遍历攻击。问题出现在代码的第72行，即`ig.createProjectFromXML(name, stdin);`之前，攻击者可以利用未验证的作业名称参数进行恶意操作。
【关键代码模式】未验证的用户输入、XML配置文件读取、路径遍历攻击。
【修复方法说明】修复方法通过调用`Jenkins.checkGoodName(name);`来验证用户输入的作业名称，确保其符合Jenkins的安全标准。这有助于防止路径遍历攻击和其他形式的目录遍历攻击。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
core/src/main/java/hudson/model/Cause.java
### 代码内容：
package hudson.model;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import hudson.console.ModelHyperlinkNote;
import hudson.diagnosis.OldDataMonitor;
import hudson.util.XStream2;
import jenkins.model.Jenkins;
import org.kohsuke.stapler.export.Exported;
import org.kohsuke.stapler.export.ExportedBean;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;

/**
 * Cause object base class.  This class hierarchy is used to keep track of why
 * a given build was started. This object encapsulates the UI rendering of the cause,
 * as well as providing more useful information in respective subypes.
 *
 * The Cause object is connected to a build via the {@link CauseAction} object.
 *
 *
Views

 *

 *
description.jelly
 *
Renders the cause to HTML. By default, it puts the short description.
 *

 *
 * @author Michael Donohue
 * @see Run#getCauses()
 * @see Queue.Item#getCauses()
 */
@ExportedBean
public abstract class Cause {
    /**
     * One-line human-readable text of the cause.
     *
     *

     * By default, this method is used to render HTML as well.
     */
    @Exported(visibility=3)
    public abstract String getShortDescription();

    /**
     * Called when the cause is registered to {@link AbstractBuild}.
     *
     * @param build
     *      never null
     * @since 1.376
     */
    public void onAddedTo(AbstractBuild build) {}

    /**
     * Report a line to the listener about this cause.
     * @since 1.362
     */
    public void print(TaskListener listener) {
        listener.getLogger().println(getShortDescription());
    }

    /**
     * Fall back implementation when no other type is available.
     * @deprecated since 2009-02-08
     */
    public static class LegacyCodeCause extends Cause {
        private StackTraceElement [] stackTrace;
        public LegacyCodeCause() {
            stackTrace = new Exception().getStackTrace();
        }

        @Override
        public String getShortDescription() {
            return Messages.Cause_LegacyCodeCause_ShortDescription();
        }
    }

    /**
     * A build is triggered by the completion of another build (AKA upstream build.)
     */
    public static class UpstreamCause extends Cause {

        /**
         * Maximum depth of transitive upstream causes we want to record.
         */
        private static final int MAX_DEPTH = 10;
        /**
         * Maximum number of transitive upstream causes we want to record.
         */
        private static final int MAX_LEAF = 25;
        private String upstreamProject, upstreamUrl;
        private int upstreamBuild;
        /**
         * @deprecated since 2009-02-28
         */
        @Deprecated
        private transient Cause upstreamCause;
        private @Nonnull List<Cause> upstreamCauses;

        /**
         * @deprecated since 2009-02-28
         */
        // for backward bytecode compatibility
        public UpstreamCause(AbstractBuild<?,?> up) {
            this((Run<?,?>)up);
        }

        public UpstreamCause(Run<?, ?> up) {
            upstreamBuild = up.getNumber();
            upstreamProject = up.getParent().getFullName();
            upstreamUrl = up.getParent().getUrl();
            upstreamCauses = new ArrayList<Cause>();
            Set<String> traversed = new HashSet<String>();
            for (Cause c : up.getCauses()) {
                upstreamCauses.add(trim(c, MAX_DEPTH, traversed));
            }
        }

        private UpstreamCause(String upstreamProject, int upstreamBuild, String upstreamUrl, @Nonnull List<Cause> upstreamCauses) {
            this.upstreamProject = upstreamProject;
            this.upstreamBuild = upstreamBuild;
            this.upstreamUrl = upstreamUrl;
            this.upstreamCauses = upstreamCauses;
        }

        private @Nonnull Cause trim(@Nonnull Cause c, int depth, Set<String> traversed) {
            if (!(c instanceof UpstreamCause)) {
                return c;
            }
            UpstreamCause uc = (UpstreamCause) c;
            List<Cause> cs = new ArrayList<Cause>();
            if (depth > 0) {
                if (traversed.add(uc.upstreamUrl + uc.upstreamBuild)) {
                    for (Cause c2 : uc.upstreamCauses) {
                        cs.add(trim(c2, depth - 1, traversed));
                    }
                }
            } else if (traversed.size() < MAX_LEAF) {
                cs.add(new DeeplyNestedUpstreamCause());
            }
            return new UpstreamCause(uc.upstreamProject, uc.upstreamBuild, uc.upstreamUrl, cs);
        }

        /**
         * Returns true if this cause points to a build in the specified job.
         */
        public boolean pointsTo(Job<?,?> j) {
            return j.getFullName().equals(upstreamProject);
        }

        /**
         * Returns true if this cause points to the specified build.
         */
        public boolean pointsTo(Run<?,?> r) {
            return r.getNumber()==upstreamBuild && pointsTo(r.getParent());
        }

        @Exported(visibility=3)
        public String getUpstreamProject() {
            return upstreamProject;
        }

        @Exported(visibility=3)
        public int getUpstreamBuild() {
            return upstreamBuild;
        }

        /**
         * @since 1.505
         */
        public @CheckForNull Run<?,?> getUpstreamRun() {
            Job<?,?> job = Jenkins.getInstance().getItemByFullName(upstreamProject, Job.class);
            return job != null ? job.getBuildByNumber(upstreamBuild) : null;
        }

        @Exported(visibility=3)
        public String getUpstreamUrl() {
            return upstreamUrl;
        }

        public List<Cause> getUpstreamCauses() {
            return upstreamCauses;
        }

        @Override
        public String getShortDescription() {
            return Messages.Cause_UpstreamCause_ShortDescription(upstreamProject, upstreamBuild);
        }

        @Override
        public void print(TaskListener listener) {
            print(listener, 0);
        }

        private void indent(TaskListener listener, int depth) {
            for (int i = 0; i < depth; i++) {
                listener.getLogger().print(' ');
            }
        }

        private void print(TaskListener listener, int depth) {
            indent(listener, depth);
            listener.getLogger().println(
                Messages.Cause_UpstreamCause_ShortDescription(
                    ModelHyperlinkNote.encodeTo('/' + upstreamUrl, upstreamProject),
                    ModelHyperlinkNote.encodeTo('/'+upstreamUrl+upstreamBuild, Integer.toString(upstreamBuild)))
            );
            if (upstreamCauses != null && !upstreamCauses.isEmpty()) {
                indent(listener, depth);
                listener.getLogger().println(Messages.Cause_UpstreamCause_CausedBy());
                for (Cause cause : upstreamCauses) {
                    if (cause instanceof UpstreamCause) {
                        ((UpstreamCause) cause).print(listener, depth + 1);
                    } else {
                        indent(listener, depth + 1);
                        cause.print(listener);
                    }
                }
            }
        }

        @Override public String toString() {
            return upstreamUrl + upstreamBuild + upstreamCauses;
        }

        public static class ConverterImpl extends XStream2.PassthruConverter<UpstreamCause> {
            public ConverterImpl(XStream2 xstream) { super(xstream); }
            @Override protected void callback(UpstreamCause uc, UnmarshallingContext context) {
                if (uc.upstreamCause != null) {
                    if (uc.upstreamCauses == null) uc.upstreamCauses = new ArrayList<Cause>();
                    uc.upstreamCauses.add(uc.upstreamCause);
                    uc.upstreamCause = null;
                    OldDataMonitor.report(context, "1.288");
                }
            }
        }

        public static class DeeplyNestedUpstreamCause extends Cause {
            @Override public String getShortDescription() {
                return "(deeply nested causes)";
            }
            @Override public String toString() {
                return "JENKINS-14814";
            }
        }

    }

    /**
     * A build is started by an user action.
     *
     * @deprecated 1.428
     *   use {@link UserIdCause}
     */
    public static class UserCause extends Cause {
        private String authenticationName;
        public UserCause() {
            this.authenticationName = Jenkins.getAuthentication().getName();
        }

        @Exported(visibility=3)
        public String getUserName() {
        	User u = User.get(authenticationName, false);
            return u != null ? u.getDisplayName() : authenticationName;
        }

        @Override
        public String getShortDescription() {
            return Messages.Cause_UserCause_ShortDescription(authenticationName);
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof UserCause && Arrays.equals(new Object[] {authenticationName},
                    new Object[] {((UserCause)o).authenticationName});
        }

        @Override
        public int hashCode() {
            return 295 + (this.authenticationName != null ? this.authenticationName.hashCode() : 0);
        }
    }

    /**
     * A build is started by an user action.
     *
     * @since 1.427
     */
    public static class UserIdCause extends Cause {

        private String userId;

        public UserIdCause() {
            User user = User.current();
            this.userId = (user == null) ? null : user.getId();
        }

        @Exported(visibility = 3)
        public String getUserId() {
            return userId;
        }

        @Exported(visibility = 3)
        public String getUserName() {
            String userName = "anonymous";
            if (userId != null) {
                User user = User.get(userId, false);
                if (user != null)
                    userName = user.getDisplayName();
            }
            return userName;
        }

        @Override
        public String getShortDescription() {
            return Messages.Cause_UserIdCause_ShortDescription(getUserName());
        }

        @Override
        public void print(TaskListener listener) {
            listener.getLogger().println(Messages.Cause_UserIdCause_ShortDescription(
                    ModelHyperlinkNote.encodeTo("/user/"+getUserId(), getUserName())));
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof UserIdCause && Arrays.equals(new Object[]{userId},
                    new Object[]{((UserIdCause) o).userId});
        }

        @Override
        public int hashCode() {
            return 295 + (this.userId != null ? this.userId.hashCode() : 0);
        }
    }

    public static class RemoteCause extends Cause {
        private String addr;
        private String note;

        public RemoteCause(String host, String note) {
            this.addr = host;
            this.note = note;
        }

        @Override
        public String getShortDescription() {
            if(note != null) {
                return Messages.Cause_RemoteCause_ShortDescriptionWithNote(addr, note);
            } else {
                return Messages.Cause_RemoteCause_ShortDescription(addr);
            }
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof RemoteCause && Arrays.equals(new Object[] {addr, note},
                    new Object[] {((RemoteCause)o).addr, ((RemoteCause)o).note});
        }

        @Override
        public int hashCode() {
            int hash = 5;
            hash = 83 * hash + (this.addr != null ? this.addr.hashCode() : 0);
            hash = 83 * hash + (this.note != null ? this.note.hashCode() : 0);
            return hash;
        }
    }
}


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
impl/src/main/java/org/richfaces/webapp/PushHandlerFilter.java
### 代码内容：
package org.richfaces.webapp;

import java.io.IOException;
import java.io.Serializable;
import java.text.MessageFormat;
import java.util.Collections;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.atmosphere.cpr.BroadcastFilter;
import org.atmosphere.cpr.Broadcaster.SCOPE;
import org.atmosphere.cpr.Meteor;
import org.richfaces.application.push.PushContext;
import org.richfaces.application.push.Request;
import org.richfaces.application.push.Session;
import org.richfaces.application.push.impl.RequestImpl;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;

/**
 * Serves as delegate for Atmposphere servlets - should not be used directly
 *
 * @author Nick Belaevski
 *
 */
public class PushHandlerFilter implements Filter, Serializable {
    public static final String SESSION_ATTRIBUTE_NAME = Session.class.getName();
    public static final String REQUEST_ATTRIBUTE_NAME = Request.class.getName();
    private static final long serialVersionUID = 5724886106704391903L;
    public static final String PUSH_SESSION_ID_PARAM = "pushSessionId";
    private static final Logger LOGGER = RichfacesLogger.WEBAPP.getLogger();

    private int servletMajorVersion;
    private transient ServletContext servletContext;

    public void init(FilterConfig filterConfig) throws ServletException {
        servletContext = filterConfig.getServletContext();
        servletMajorVersion = servletContext.getMajorVersion();
    }

    /**
     * Note: Filter does not delegate to chain, since it would lead into cycle by calling
     * {@link PushServlet#service(ServletRequest, ServletResponse)}.
     */
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
            ServletException {
        if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
            HttpServletRequest httpReq = (HttpServletRequest) request;
            HttpServletResponse httpResp = (HttpServletResponse) response;

            if ("GET".equals(httpReq.getMethod())) {
                Meteor meteor = Meteor.build(httpReq, SCOPE.REQUEST, Collections.<BroadcastFilter>emptyList(), null);

                String pushSessionId = httpReq.getParameter(PUSH_SESSION_ID_PARAM);

                Session session = null;

                if (pushSessionId != null) {
                    ensureServletContextAvailable(request);
                    PushContext pushContext = (PushContext) servletContext.getAttribute(PushContext.INSTANCE_KEY_NAME);
                    session = pushContext.getSessionManager().getPushSession(pushSessionId);
                }

                if (session == null) {
                    if (LOGGER.isDebugEnabled()) {
                        LOGGER.debug(MessageFormat.format("Session {0} was not found", pushSessionId));
                    }
                    httpResp.sendError(HttpServletResponse.SC_BAD_REQUEST);
                    return;
                }

                httpResp.setContentType("text/plain");

                try {
                    Request pushRequest = new RequestImpl(meteor, session);

                    httpReq.setAttribute(SESSION_ATTRIBUTE_NAME, session);
                    httpReq.setAttribute(REQUEST_ATTRIBUTE_NAME, pushRequest);

                    pushRequest.suspend();
                } catch (Exception e) {
                    LOGGER.error(e.getMessage(), e);
                }

                return;
            }
        }
    }

    /**
     * Ensures that servletContext instance is available, or throws exception.
     *
     * This method ensures compatibility with Servlet <3.0, which doesn't support obtaining {@link ServletContext} from
     * {@link ServletRequest}.
     *
     * @param request {@link ServletRequest}
     * @throws {@link IllegalStateException} when {@link ServletContext} won't be available in Servlets <3.0 environments.
     *         This can happen when this filter was serialized.
     */
    private void ensureServletContextAvailable(ServletRequest request) {
        if (servletContext == null) {
            if (servletMajorVersion >= 3) {
                servletContext = request.getServletContext();
            } else {
                throw new IllegalStateException(
                        "ServletContext is not available (you are using Servlets API <3.0; it might be caused by "
                                + PushHandlerFilter.class.getName() + " in distributed environment)");
            }
        }
    }

    public void destroy() {
        servletContext = null;
    }
}

Output:
【漏洞类型】未验证的用户输入
【严重性】Medium
【漏洞摘要】原始代码中存在未验证的用户输入漏洞。具体表现为`doFilter`方法中的`pushSessionId`参数未经过任何形式的验证或过滤，直接用于从`PushContext`中获取`PushSession`对象。如果攻击者能够控制`pushSessionId`的值，可能会导致访问无效的会话或触发意外行为。
【关键代码模式】`pushSessionId = httpReq.getParameter(PUSH_SESSION_ID_PARAM);`
【修复方法说明】修复方法通过将`Meteor`的创建移到`try`块之前来解决问题，确保即使在创建`Meteor`对象时发生异常，也不会执行后续的敏感操作。此外，应考虑在获取`PushSession`之前对`pushSessionId`进行验证。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
spring-webmvc/src/main/java/org/springframework/web/servlet/tags/form/FormTag.java
### 代码内容：
package org.springframework.web.servlet.tags.form;

import java.util.Map;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;

import org.springframework.beans.PropertyAccessor;
import org.springframework.core.Conventions;
import org.springframework.http.HttpMethod;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.support.RequestDataValueProcessor;
import org.springframework.web.util.HtmlUtils;

/**
 * Databinding-aware JSP tag for rendering an HTML '{@code form}' whose
 * inner elements are bound to properties on a form object.
 *
 *
Users should place the form object into the
 * {@link org.springframework.web.servlet.ModelAndView ModelAndView} when
 * populating the data for their view. The name of this form object can be
 * configured using the {@link #setModelAttribute "modelAttribute"} property.
 *
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @author Scott Andrews
 * @author Rossen Stoyanchev
 * @since 2.0
 */
@SuppressWarnings("serial")
public class FormTag extends AbstractHtmlElementTag {

	/** The default HTTP method using which form values are sent to the server: "post" */
	private static final String DEFAULT_METHOD = "post";

	/** The default attribute name: "command" */
	public static final String DEFAULT_COMMAND_NAME = "command";

	/** The name of the '{@code modelAttribute}' setting */
	private static final String MODEL_ATTRIBUTE = "modelAttribute";

	/**
	 * The name of the {@link javax.servlet.jsp.PageContext} attribute under which the
	 * form object name is exposed.
	 */
	public static final String MODEL_ATTRIBUTE_VARIABLE_NAME =
			Conventions.getQualifiedAttributeName(AbstractFormTag.class, MODEL_ATTRIBUTE);

	/** Default method parameter, i.e. {@code _method}. */
	private static final String DEFAULT_METHOD_PARAM = "_method";

	private static final String FORM_TAG = "form";

	private static final String INPUT_TAG = "input";

	private static final String ACTION_ATTRIBUTE = "action";

	private static final String METHOD_ATTRIBUTE = "method";

	private static final String TARGET_ATTRIBUTE = "target";

	private static final String ENCTYPE_ATTRIBUTE = "enctype";

	private static final String ACCEPT_CHARSET_ATTRIBUTE = "accept-charset";

	private static final String ONSUBMIT_ATTRIBUTE = "onsubmit";

	private static final String ONRESET_ATTRIBUTE = "onreset";

	private static final String AUTOCOMPLETE_ATTRIBUTE = "autocomplete";

	private static final String NAME_ATTRIBUTE = "name";

	private static final String VALUE_ATTRIBUTE = "value";

	private static final String TYPE_ATTRIBUTE = "type";

	private TagWriter tagWriter;

	private String modelAttribute = DEFAULT_COMMAND_NAME;

	private String name;

	private String action;

	private String servletRelativeAction;

	private String method = DEFAULT_METHOD;

	private String target;

	private String enctype;

	private String acceptCharset;

	private String onsubmit;

	private String onreset;

	private String autocomplete;

	private String methodParam = DEFAULT_METHOD_PARAM;

	/** Caching a previous nested path, so that it may be reset */
	private String previousNestedPath;

	/**
	 * Set the name of the form attribute in the model.
	 *
May be a runtime expression.
	 */
	public void setModelAttribute(String modelAttribute) {
		this.modelAttribute = modelAttribute;
	}

	/**
	 * Get the name of the form attribute in the model.
	 */
	protected String getModelAttribute() {
		return this.modelAttribute;
	}

	/**
	 * Set the name of the form attribute in the model.
	 *
May be a runtime expression.
	 * @see #setModelAttribute
	 */
	public void setCommandName(String commandName) {
		this.modelAttribute = commandName;
	}

	/**
	 * Get the name of the form attribute in the model.
	 * @see #getModelAttribute
	 */
	protected String getCommandName() {
		return this.modelAttribute;
	}

	/**
	 * Set the value of the '{@code name}' attribute.
	 *
May be a runtime expression.
	 *
Name is not a valid attribute for form on XHTML 1.0. However,
	 * it is sometimes needed for backward compatibility.
	 */
	public void setName(String name) {
		this.name = name;
	}

	/**
	 * Get the value of the '{@code name}' attribute.
	 */
	@Override
	protected String getName() throws JspException {
		return this.name;
	}

	/**
	 * Set the value of the '{@code action}' attribute.
	 *
May be a runtime expression.
	 */
	public void setAction(String action) {
		this.action = (action != null ? action : "");
	}

	/**
	 * Get the value of the '{@code action}' attribute.
	 */
	protected String getAction() {
		return this.action;
	}

	/**
	 * Set the value of the '{@code action}' attribute.
	 *
May be a runtime expression.
	 */
	public void setServletRelativeAction(String servletRelativeaction) {
		this.servletRelativeAction = (servletRelativeaction != null ? servletRelativeaction : "");
	}

	/**
	 * Get the value of the '{@code action}' attribute.
	 */
	protected String getServletRelativeAction() {
		return this.servletRelativeAction;
	}

	/**
	 * Set the value of the '{@code method}' attribute.
	 *
May be a runtime expression.
	 */
	public void setMethod(String method) {
		this.method = method;
	}

	/**
	 * Get the value of the '{@code method}' attribute.
	 */
	protected String getMethod() {
		return this.method;
	}

	/**
	 * Set the value of the '{@code target}' attribute.
	 *
May be a runtime expression.
	 */
	public void setTarget(String target) {
		this.target = target;
	}

	/**
	 * Get the value of the '{@code target}' attribute.
	 */
	public String getTarget() {
		return this.target;
	}

	/**
	 * Set the value of the '{@code enctype}' attribute.
	 *
May be a runtime expression.
	 */
	public void setEnctype(String enctype) {
		this.enctype = enctype;
	}

	/**
	 * Get the value of the '{@code enctype}' attribute.
	 */
	protected String getEnctype() {
		return this.enctype;
	}

	/**
	 * Set the value of the '{@code acceptCharset}' attribute.
	 *
May be a runtime expression.
	 */
	public void setAcceptCharset(String acceptCharset) {
		this.acceptCharset = acceptCharset;
	}

	/**
	 * Get the value of the '{@code acceptCharset}' attribute.
	 */
	protected String getAcceptCharset() {
		return this.acceptCharset;
	}

	/**
	 * Set the value of the '{@code onsubmit}' attribute.
	 *
May be a runtime expression.
	 */
	public void setOnsubmit(String onsubmit) {
		this.onsubmit = onsubmit;
	}

	/**
	 * Get the value of the '{@code onsubmit}' attribute.
	 */
	protected String getOnsubmit() {
		return this.onsubmit;
	}

	/**
	 * Set the value of the '{@code onreset}' attribute.
	 *
May be a runtime expression.
	 */
	public void setOnreset(String onreset) {
		this.onreset = onreset;
	}

	/**
	 * Get the value of the '{@code onreset}' attribute.
	 */
	protected String getOnreset() {
		return this.onreset;
	}

	/**
	 * Set the value of the '{@code autocomplete}' attribute.
	 * May be a runtime expression.
	 */
	public void setAutocomplete(String autocomplete) {
		this.autocomplete = autocomplete;
	}

	/**
	 * Get the value of the '{@code autocomplete}' attribute.
	 */
	protected String getAutocomplete() {
		return this.autocomplete;
	}

	/**
	 * Set the name of the request param for non-browser supported HTTP methods.
	 */
	public void setMethodParam(String methodParam) {
		this.methodParam = methodParam;
	}

	/**
	 * Get the name of the request param for non-browser supported HTTP methods.
	 */
	protected String getMethodParameter() {
		return this.methodParam;
	}

	/**
	 * Determine if the HTTP method is supported by browsers (i.e. GET or POST).
	 */
	protected boolean isMethodBrowserSupported(String method) {
		return ("get".equalsIgnoreCase(method) || "post".equalsIgnoreCase(method));
	}

	/**
	 * Writes the opening part of the block	'{@code form}' tag and exposes
	 * the form object name in the {@link javax.servlet.jsp.PageContext}.
	 * @param tagWriter the {@link TagWriter} to which the form content is to be written
	 * @return {@link javax.servlet.jsp.tagext.Tag#EVAL_BODY_INCLUDE}
	 */
	@Override
	protected int writeTagContent(TagWriter tagWriter) throws JspException {
		this.tagWriter = tagWriter;

		tagWriter.startTag(FORM_TAG);
		writeDefaultAttributes(tagWriter);
		tagWriter.writeAttribute(ACTION_ATTRIBUTE, resolveAction());
		writeOptionalAttribute(tagWriter, METHOD_ATTRIBUTE, getHttpMethod());
		writeOptionalAttribute(tagWriter, TARGET_ATTRIBUTE, getTarget());
		writeOptionalAttribute(tagWriter, ENCTYPE_ATTRIBUTE, getEnctype());
		writeOptionalAttribute(tagWriter, ACCEPT_CHARSET_ATTRIBUTE, getAcceptCharset());
		writeOptionalAttribute(tagWriter, ONSUBMIT_ATTRIBUTE, getOnsubmit());
		writeOptionalAttribute(tagWriter, ONRESET_ATTRIBUTE, getOnreset());
		writeOptionalAttribute(tagWriter, AUTOCOMPLETE_ATTRIBUTE, getAutocomplete());

		tagWriter.forceBlock();

		if (!isMethodBrowserSupported(getMethod())) {
			assertHttpMethod(getMethod());
			String inputName = getMethodParameter();
			String inputType = "hidden";
			tagWriter.startTag(INPUT_TAG);
			writeOptionalAttribute(tagWriter, TYPE_ATTRIBUTE, inputType);
			writeOptionalAttribute(tagWriter, NAME_ATTRIBUTE, inputName);
			writeOptionalAttribute(tagWriter, VALUE_ATTRIBUTE, processFieldValue(inputName, getMethod(), inputType));
			tagWriter.endTag();
		}

		// Expose the form object name for nested tags...
		String modelAttribute = resolveModelAttribute();
		this.pageContext.setAttribute(MODEL_ATTRIBUTE_VARIABLE_NAME, modelAttribute, PageContext.REQUEST_SCOPE);

		// Save previous nestedPath value, build and expose current nestedPath value.
		// Use request scope to expose nestedPath to included pages too.
		this.previousNestedPath =
				(String) this.pageContext.getAttribute(NESTED_PATH_VARIABLE_NAME, PageContext.REQUEST_SCOPE);
		this.pageContext.setAttribute(NESTED_PATH_VARIABLE_NAME,
				modelAttribute + PropertyAccessor.NESTED_PROPERTY_SEPARATOR, PageContext.REQUEST_SCOPE);

		return EVAL_BODY_INCLUDE;
	}

	private String getHttpMethod() {
		return isMethodBrowserSupported(getMethod()) ? getMethod() : DEFAULT_METHOD;
	}

	private void assertHttpMethod(String method) {
		for (HttpMethod httpMethod : HttpMethod.values()) {
			if (httpMethod.name().equalsIgnoreCase(method)) {
				return;
			}
		}
		throw new IllegalArgumentException("Invalid HTTP method: " + method);
	}

	/**
	 * Autogenerated IDs correspond to the form object name.
	 */
	@Override
	protected String autogenerateId() throws JspException {
		return resolveModelAttribute();
	}

	/**
	 * {@link #evaluate Resolves} and returns the name of the form object.
	 * @throws IllegalArgumentException if the form object resolves to {@code null}
	 */
	protected String resolveModelAttribute() throws JspException {
		Object resolvedModelAttribute = evaluate(MODEL_ATTRIBUTE, getModelAttribute());
		if (resolvedModelAttribute == null) {
			throw new IllegalArgumentException(MODEL_ATTRIBUTE + " must not be null");
		}
		return (String) resolvedModelAttribute;
	}

	/**
	 * Resolve the value of the '{@code action}' attribute.
	 *
If the user configured an '{@code action}' value then the result of
	 * evaluating this value is used. If the user configured an
	 * '{@code servletRelativeAction}' value then the value is prepended
	 * with the context and servlet paths, and the result is used. Otherwise, the
	 * {@link org.springframework.web.servlet.support.RequestContext#getRequestUri()
	 * originating URI} is used.
	 *
	 * @return the value that is to be used for the '{@code action}' attribute
	 */
	protected String resolveAction() throws JspException {
		String action = getAction();
		String servletRelativeAction = getServletRelativeAction();
		if (StringUtils.hasText(action)) {
			action = getDisplayString(evaluate(ACTION_ATTRIBUTE, action));
			return processAction(action);
		}
		else if (StringUtils.hasText(servletRelativeAction)) {
			String pathToServlet = getRequestContext().getPathToServlet();
			if (servletRelativeAction.startsWith("/") && !servletRelativeAction.startsWith(getRequestContext().getContextPath())) {
				servletRelativeAction = pathToServlet + servletRelativeAction;
			}
			servletRelativeAction = getDisplayString(evaluate(ACTION_ATTRIBUTE, servletRelativeAction));
			return processAction(servletRelativeAction);
		}
		else {
			String requestUri = getRequestContext().getRequestUri();
			ServletResponse response = this.pageContext.getResponse();
			if (response instanceof HttpServletResponse) {
				requestUri = ((HttpServletResponse) response).encodeURL(requestUri);
				String queryString = getRequestContext().getQueryString();
				if (StringUtils.hasText(queryString)) {
					requestUri += "?" + HtmlUtils.htmlEscape(queryString);
				}
			}
			if (StringUtils.hasText(requestUri)) {
				return processAction(requestUri);
			}
			else {
				throw new IllegalArgumentException("Attribute 'action' is required. " +
						"Attempted to resolve against current request URI but request URI was null.");
			}
		}
	}

	/**
	 * Process the action through a {@link RequestDataValueProcessor} instance
	 * if one is configured or otherwise returns the action unmodified.
	 */
	private String processAction(String action) {
		RequestDataValueProcessor processor = getRequestContext().getRequestDataValueProcessor();
		ServletRequest request = this.pageContext.getRequest();
		if ((processor != null) && (request instanceof HttpServletRequest)) {
			action = processor.processAction((HttpServletRequest) request, action, getHttpMethod());
		}
		return action;
	}

	/**
	 * Closes the '{@code form}' block tag and removes the form object name
	 * from the {@link javax.servlet.jsp.PageContext}.
	 */
	@Override
	public int doEndTag() throws JspException {
		RequestDataValueProcessor processor = getRequestContext().getRequestDataValueProcessor();
		ServletRequest request = this.pageContext.getRequest();
		if ((processor != null) && (request instanceof HttpServletRequest)) {
			writeHiddenFields(processor.getExtraHiddenFields((HttpServletRequest) request));
		}
		this.tagWriter.endTag();
		return EVAL_PAGE;
	}

	/**
	 * Writes the given values as hidden fields.
	 */
	private void writeHiddenFields(Map<String, String> hiddenFields) throws JspException {
		if (hiddenFields != null) {
			this.tagWriter.appendValue("
\n");
			for (String name : hiddenFields.keySet()) {
				this.tagWriter.appendValue("<input type=\"hidden\" ");
				this.tagWriter.appendValue("name=\"" + name + "\" value=\"" + hiddenFields.get(name) + "\" ");
				this.tagWriter.appendValue("/>\n");
			}
			this.tagWriter.appendValue("
");
		}
	}

	/**
	 * Clears the stored {@link TagWriter}.
	 */
	@Override
	public void doFinally() {
		super.doFinally();
		this.pageContext.removeAttribute(MODEL_ATTRIBUTE_VARIABLE_NAME, PageContext.REQUEST_SCOPE);
		if (this.previousNestedPath != null) {
			// Expose previous nestedPath value.
			this.pageContext.setAttribute(NESTED_PATH_VARIABLE_NAME, this.previousNestedPath, PageContext.REQUEST_SCOPE);
		}
		else {
			// Remove exposed nestedPath value.
			this.pageContext.removeAttribute(NESTED_PATH_VARIABLE_NAME, PageContext.REQUEST_SCOPE);
		}
		this.tagWriter = null;
		this.previousNestedPath = null;
	}

	/**
	 * Override resolve CSS class since error class is not supported.
	 */
	@Override
	protected String resolveCssClass() throws JspException {
		return ObjectUtils.getDisplayString(evaluate("cssClass", getCssClass()));
	}

	/**
	 * Unsupported for forms.
	 * @throws UnsupportedOperationException always
	 */
	@Override
	public void setPath(String path) {
		throw new UnsupportedOperationException("The 'path' attribute is not supported for forms");
	}

	/**
	 * Unsupported for forms.
	 * @throws UnsupportedOperationException always
	 */
	@Override
	public void setCssErrorClass(String cssErrorClass) {
		throw new UnsupportedOperationException("The 'cssErrorClass' attribute is not supported for forms");
	}

}


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
lib/npm.js
### 代码内容：
;(function(){
// windows: running "npm blah" in this folder will invoke WSH, not node.
if (typeof WScript !== "undefined") {
  WScript.echo("npm does not work when run\n"
              +"with the Windows Scripting Host\n\n"
              +"'cd' to a different directory,\n"
              +"or type 'npm.cmd <args>',\n"
              +"or type 'node npm <args>'.")
  WScript.quit(1)
  return
}

// monkey-patch support for 0.6 child processes
require('child-process-close')

var EventEmitter = require("events").EventEmitter
  , npm = module.exports = new EventEmitter
  , config = require("./config.js")
  , npmconf = require("npmconf")
  , log = require("npmlog")
  , fs = require("graceful-fs")
  , path = require("path")
  , abbrev = require("abbrev")
  , which = require("which")
  , semver = require("semver")
  , findPrefix = require("./utils/find-prefix.js")
  , getUid = require("uid-number")
  , mkdirp = require("mkdirp")
  , slide = require("slide")
  , chain = slide.chain
  , RegClient = require("npm-registry-client")

npm.config = {loaded: false}

// /usr/local is often a read-only fs, which is not
// well handled by node or mkdirp.  Just double-check
// in the case of errors when making the prefix dirs.
function mkdir (p, cb) {
  mkdirp(p, function (er, made) {
    // it could be that we couldn't create it, because it
    // already exists, and is on a read-only fs.
    if (er) {
      return fs.stat(p, function (er2, st) {
        if (er2 || !st.isDirectory()) return cb(er)
        return cb(null, made)
      })
    }
    return cb(er, made)
  })
}

npm.commands = {}

try {
  var pv = process.version.replace(/^v/, '')
  // startup, ok to do this synchronously
  var j = JSON.parse(fs.readFileSync(
    path.join(__dirname, "../package.json"))+"")
  npm.version = j.version
  npm.nodeVersionRequired = j.engines.node
  if (!semver.satisfies(pv, j.engines.node)) {
    log.warn("unsupported version", [""
            ,"npm requires node version: "+j.engines.node
            ,"And you have: "+pv
            ,"which is not satisfactory."
            ,""
            ,"Bad things will likely happen.  You have been warned."
            ,""].join("\n"))
  }
} catch (ex) {
  try {
    log.info("error reading version", ex)
  } catch (er) {}
  npm.version = ex
}

var commandCache = {}
  // short names for common things
  , aliases = { "rm" : "uninstall"
              , "r" : "uninstall"
              , "un" : "uninstall"
              , "unlink" : "uninstall"
              , "remove" : "uninstall"
              , "rb" : "rebuild"
              , "list" : "ls"
              , "la" : "ls"
              , "ll" : "ls"
              , "ln" : "link"
              , "i" : "install"
              , "isntall" : "install"
              , "up" : "update"
              , "c" : "config"
              , "info" : "view"
              , "show" : "view"
              , "find" : "search"
              , "s" : "search"
              , "se" : "search"
              , "author" : "owner"
              , "home" : "docs"
              , "issues": "bugs"
              , "unstar": "star" // same function
              , "apihelp" : "help"
              , "login": "adduser"
              , "add-user": "adduser"
              , "tst": "test"
              , "find-dupes": "dedupe"
              , "ddp": "dedupe"
              }

  , aliasNames = Object.keys(aliases)
  // these are filenames in .
  , cmdList = [ "install"
              , "uninstall"
              , "cache"
              , "config"
              , "set"
              , "get"
              , "update"
              , "outdated"
              , "prune"
              , "submodule"
              , "pack"
              , "dedupe"

              , "rebuild"
              , "link"

              , "publish"
              , "star"
              , "stars"
              , "tag"
              , "adduser"
              , "unpublish"
              , "owner"
              , "deprecate"
              , "shrinkwrap"

              , "help"
              , "help-search"
              , "ls"
              , "search"
              , "view"
              , "init"
              , "version"
              , "edit"
              , "explore"
              , "docs"
              , "bugs"
              , "faq"
              , "root"
              , "prefix"
              , "bin"
              , "whoami"

              , "test"
              , "stop"
              , "start"
              , "restart"
              , "run-script"
              , "completion"
              ]
  , plumbing = [ "build"
               , "unbuild"
               , "xmas"
               , "substack"
               , "visnup"
               ]
  , fullList = npm.fullList = cmdList.concat(aliasNames).filter(function (c) {
      return plumbing.indexOf(c) === -1
    })
  , abbrevs = abbrev(fullList)

Object.keys(abbrevs).concat(plumbing).forEach(function addCommand (c) {
  Object.defineProperty(npm.commands, c, { get : function () {
    if (!loaded) throw new Error(
      "Call npm.load(conf, cb) before using this command.\n"+
      "See the README.md or cli.js for example usage.")
    var a = npm.deref(c)
    if (c === "la" || c === "ll") {
      npm.config.set("long", true)
    }
    npm.command = c
    if (commandCache[a]) return commandCache[a]
    var cmd = require(__dirname+"/"+a+".js")
    commandCache[a] = function () {
      var args = Array.prototype.slice.call(arguments, 0)
      if (typeof args[args.length - 1] !== "function") {
        args.push(defaultCb)
      }
      if (args.length === 1) args.unshift([])
      cmd.apply(npm, args)
    }
    Object.keys(cmd).forEach(function (k) {
      commandCache[a][k] = cmd[k]
    })
    return commandCache[a]
  }, enumerable: fullList.indexOf(c) !== -1 })

  // make css-case commands callable via camelCase as well
  if (c.match(/\-([a-z])/)) {
    addCommand(c.replace(/\-([a-z])/g, function (a, b) {
      return b.toUpperCase()
    }))
  }
})

function defaultCb (er, data) {
  if (er) console.error(er.stack || er.message)
  else console.log(data)
}

npm.deref = function (c) {
  if (!c) return ""
  if (c.match(/[A-Z]/)) c = c.replace(/([A-Z])/g, function (m) {
    return "-" + m.toLowerCase()
  })
  if (plumbing.indexOf(c) !== -1) return c
  var a = abbrevs[c]
  if (aliases[a]) a = aliases[a]
  return a
}

var loaded = false
  , loading = false
  , loadErr = null
  , loadListeners = []

function loadCb (er) {
  loadListeners.forEach(function (cb) {
    process.nextTick(cb.bind(npm, er, npm))
  })
  loadListeners.length = 0
}

npm.load = function (cli, cb_) {
  if (!cb_ && typeof cli === "function") cb_ = cli , cli = {}
  if (!cb_) cb_ = function () {}
  if (!cli) cli = {}
  loadListeners.push(cb_)
  if (loaded || loadErr) return cb(loadErr)
  if (loading) return
  loading = true
  var onload = true

  function cb (er) {
    if (loadErr) return
    if (npm.config.get("force")) {
      log.warn("using --force", "I sure hope you know what you are doing.")
    }
    npm.config.loaded = true
    loaded = true
    loadCb(loadErr = er)
    if (onload = onload && npm.config.get("onload-script")) {
      require(onload)
      onload = false
    }
  }

  log.pause()

  load(npm, cli, cb)
}

function load (npm, cli, cb) {
  which(process.argv[0], function (er, node) {
    if (!er && node.toUpperCase() !== process.execPath.toUpperCase()) {
      log.verbose("node symlink", node)
      process.execPath = node
      process.installPrefix = path.resolve(node, "..", "..")
    }

    // look up configs
    //console.error("about to look up configs")

    var builtin = path.resolve(__dirname, "..", "npmrc")
    npmconf.load(cli, builtin, function (er, conf) {
      if (er === conf) er = null

      npm.config = conf

      var color = conf.get("color")

      log.level = conf.get("loglevel")
      log.heading = "npm"
      log.stream = conf.get("logstream")
      switch (color) {
        case "always": log.enableColor(); break
        case false: log.disableColor(); break
      }
      log.resume()

      if (er) return cb(er)

      // see if we need to color normal output
      switch (color) {
        case "always":
          npm.color = true
          break
        case false:
          npm.color = false
          break
        default:
          var tty = require("tty")
          if (process.stdout.isTTY) npm.color = true
          else if (!tty.isatty) npm.color = true
          else if (tty.isatty(1)) npm.color = true
          else npm.color = false
          break
      }

      // at this point the configs are all set.
      // go ahead and spin up the registry client.
      var token = conf.get("_token")
      if (typeof token === "string") {
        try {
          token = JSON.parse(token)
          conf.set("_token", token, "user")
          conf.save("user")
        } catch (e) { token = null }
      }

      npm.registry = new RegClient(npm.config)

      // save the token cookie in the config file
      if (npm.registry.couchLogin) {
        npm.registry.couchLogin.tokenSet = function (tok) {
          npm.config.set("_token", tok, "user")
          // ignore save error.  best effort.
          npm.config.save("user")
        }
      }

      var umask = npm.config.get("umask")
      npm.modes = { exec: 0777 & (~umask)
                  , file: 0666 & (~umask)
                  , umask: umask }

      chain([ [ loadPrefix, npm, cli ]
            , [ setUser, conf, conf.root ]
            , [ loadUid, npm ]
            ], cb)
    })
  })
}

function loadPrefix (npm, conf, cb) {
  // try to guess at a good node_modules location.
  var p
    , gp
  if (!Object.prototype.hasOwnProperty.call(conf, "prefix")) {
    p = process.cwd()
  } else {
    p = npm.config.get("prefix")
  }
  gp = npm.config.get("prefix")

  findPrefix(p, function (er, p) {
    Object.defineProperty(npm, "localPrefix",
      { get : function () { return p }
      , set : function (r) { return p = r }
      , enumerable : true
      })
    // the prefix MUST exist, or else nothing works.
    if (!npm.config.get("global")) {
      mkdir(p, next)
    } else {
      next(er)
    }
  })

  gp = path.resolve(gp)
  Object.defineProperty(npm, "globalPrefix",
    { get : function () { return gp }
    , set : function (r) { return gp = r }
    , enumerable : true
    })
  // the prefix MUST exist, or else nothing works.
  mkdir(gp, next)

  var i = 2
    , errState = null
  function next (er) {
    if (errState) return
    if (er) return cb(errState = er)
    if (--i === 0) return cb()
  }
}

function loadUid (npm, cb) {
  // if we're not in unsafe-perm mode, then figure out who
  // to run stuff as.  Do this first, to support `npm update npm -g`
  if (!npm.config.get("unsafe-perm")) {
    getUid(npm.config.get("user"), npm.config.get("group"), cb)
  } else {
    process.nextTick(cb)
  }
}

function setUser (cl, dc, cb) {
  // If global, leave it as-is.
  // If not global, then set the user to the owner of the prefix folder.
  // Just set the default, so it can be overridden.
  if (cl.get("global")) return cb()
  if (process.env.SUDO_UID) {
    dc.user = +(process.env.SUDO_UID)
    return cb()
  }

  var prefix = path.resolve(cl.get("prefix"))
  mkdir(prefix, function (er) {
    if (er) {
      log.error("could not create prefix dir", prefix)
      return cb(er)
    }
    fs.stat(prefix, function (er, st) {
      dc.user = st && st.uid
      return cb(er)
    })
  })
}

Object.defineProperty(npm, "prefix",
  { get : function () {
      return npm.config.get("global") ? npm.globalPrefix : npm.localPrefix
    }
  , set : function (r) {
      var k = npm.config.get("global") ? "globalPrefix" : "localPrefix"
      return npm[k] = r
    }
  , enumerable : true
  })

Object.defineProperty(npm, "bin",
  { get : function () {
      if (npm.config.get("global")) return npm.globalBin
      return path.resolve(npm.root, ".bin")
    }
  , enumerable : true
  })

Object.defineProperty(npm, "globalBin",
  { get : function () {
      var b = npm.globalPrefix
      if (process.platform !== "win32") b = path.resolve(b, "bin")
      return b
    }
  })

Object.defineProperty(npm, "dir",
  { get : function () {
      if (npm.config.get("global")) return npm.globalDir
      return path.resolve(npm.prefix, "node_modules")
    }
  , enumerable : true
  })

Object.defineProperty(npm, "globalDir",
  { get : function () {
      return (process.platform !== "win32")
           ? path.resolve(npm.globalPrefix, "lib", "node_modules")
           : path.resolve(npm.globalPrefix, "node_modules")
    }
  , enumerable : true
  })

Object.defineProperty(npm, "root",
  { get : function () { return npm.dir } })

Object.defineProperty(npm, "cache",
  { get : function () { return npm.config.get("cache") }
  , set : function (r) { return npm.config.set("cache", r) }
  , enumerable : true
  })

var tmpFolder
Object.defineProperty(npm, "tmp",
  { get : function () {
      if (!tmpFolder) tmpFolder = "npm-" + process.pid
      return path.resolve(npm.config.get("tmp"), tmpFolder)
    }
  , enumerable : true
  })

// the better to repl you with
Object.getOwnPropertyNames(npm.commands).forEach(function (n) {
  if (npm.hasOwnProperty(n) || n === "config") return

  Object.defineProperty(npm, n, { get: function () {
    return function () {
      var args = Array.prototype.slice.call(arguments, 0)
        , cb = defaultCb

      if (args.length === 1 && Array.isArray(args[0])) {
        args = args[0]
      }

      if (typeof args[args.length - 1] === "function") {
        cb = args.pop()
      }

      npm.commands[n](args, cb)
    }
  }, enumerable: false, configurable: true })
})

if (require.main === module) {
  require("../bin/npm-cli.js")
}
})()

Output:
【漏洞类型】临时文件夹路径预测漏洞
【严重性】Medium
【漏洞摘要】原始代码中，临时文件夹的名称是基于当前进程的PID（进程标识符）生成的。由于PID是可预测的，攻击者可以通过预测PID来猜测和访问其他进程的临时文件夹，从而可能访问敏感信息或执行恶意操作。具体问题行在第477行：`if (!tmpFolder) tmpFolder = "npm-" + process.pid`。
【关键代码模式】基于可预测信息生成临时文件夹名称，如进程ID（PID）。
【修复方法说明】修复方法通过在临时文件夹名称中加入6字节的随机字符串，使其无法被轻易预测，从而提高了安全性。