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/Item.java
### 代码内容：
package hudson.model;

import hudson.Functions;
import hudson.security.PermissionScope;
import org.kohsuke.stapler.StaplerRequest;

import java.io.IOException;
import java.util.Collection;

import hudson.search.SearchableModelObject;
import hudson.security.Permission;
import hudson.security.PermissionGroup;
import hudson.security.AccessControlled;
import hudson.util.Secret;

/**
 * Basic configuration unit in Hudson.
 *
 *

 * Every {@link Item} is hosted in an {@link ItemGroup} called "parent",
 * and some {@link Item}s are {@link ItemGroup}s. This form a tree
 * structure, which is rooted at {@link jenkins.model.Jenkins}.
 *
 *

 * Unlike file systems, where a file can be moved from one directory
 * to another, {@link Item} inherently belongs to a single {@link ItemGroup}
 * and that relationship will not change.
 * Think of
 * Windows device manager
 * — an HDD always show up under 'Disk drives' and it can never be moved to another parent.
 *
 * Similarly, {@link ItemGroup} is not a generic container. Each subclass
 * of {@link ItemGroup} can usually only host a certain limited kinds of
 * {@link Item}s.
 *
 *

 * {@link Item}s have unique {@link #getName() name}s that distinguish themselves
 * among their siblings uniquely. The names can be combined by '/' to form an
 * item full name, which uniquely identifies an {@link Item} inside the whole {@link jenkins.model.Jenkins}.
 *
 * @author Kohsuke Kawaguchi
 * @see Items
 * @see ItemVisitor
 */
public interface Item extends PersistenceRoot, SearchableModelObject, AccessControlled {
    /**
     * Gets the parent that contains this item.
     */
    ItemGroup<? extends Item> getParent();

    /**
     * Gets all the jobs that this {@link Item} contains as descendants.
     */
    Collection<? extends Job> getAllJobs();

    /**
     * Gets the name of the item.
     *
     *

     * The name must be unique among other {@link Item}s that belong
     * to the same parent.
     *
     *

     * This name is also used for directory name, so it cannot contain
     * any character that's not allowed on the file system.
     *
     * @see #getFullName()
     */
    String getName();

    /**
     * Gets the full name of this item, like "abc/def/ghi".
     *
     *

     * Full name consists of {@link #getName() name}s of {@link Item}s
     * that lead from the root {@link jenkins.model.Jenkins} to this {@link Item},
     * separated by '/'. This is the unique name that identifies this
     * {@link Item} inside the whole {@link jenkins.model.Jenkins}.
     *
     * @see jenkins.model.Jenkins#getItemByFullName(String,Class)
     */
    String getFullName();

    /**
     * Gets the human readable short name of this item.
     *
     *

     * This method should try to return a short concise human
     * readable string that describes this item.
     * The string need not be unique.
     *
     *

     * The returned string should not include the display names
     * of {@link #getParent() ancestor items}.
     */
    String getDisplayName();

    /**
     * Works like {@link #getDisplayName()} but return
     * the full path that includes all the display names
     * of the ancestors.
     */
    String getFullDisplayName();

    /**
     * Gets the relative name to this item from the specified group.
     *
     * @since 1.419
     * @return
     *      String like "../foo/bar"
     */
    String getRelativeNameFrom(ItemGroup g);

    /**
     * Short for {@code getRelativeNameFrom(item.getParent())}
     *
     * @since 1.419
     */
    String getRelativeNameFrom(Item item);

    /**
     * Returns the URL of this item relative to the context root of the application.
     *
     * @see AbstractItem#getUrl() for how to implement this.
     *
     * @return
     *      URL that ends with '/'.
     */
    String getUrl();

    /**
     * Returns the URL of this item relative to the parent {@link ItemGroup}.
     * @see AbstractItem#getShortUrl() for how to implement this.
     *
     * @return
     *      URL that ends with '/'.
     */
    String getShortUrl();

    /**
     * Returns the absolute URL of this item. This relies on the current
     * {@link StaplerRequest} to figure out what the host name is,
     * so can be used only during processing client requests.
     *
     * @return
     *      absolute URL.
     * @throws IllegalStateException
     *      if the method is invoked outside the HTTP request processing.
     *
     * @deprecated
     *      This method shall NEVER be used during HTML page rendering, as it won't work with
     *      network set up like Apache reverse proxy.
     *      This method is only intended for the remote API clients who cannot resolve relative references
     *      (even this won't work for the same reason, which should be fixed.)
     */
    @Deprecated
    String getAbsoluteUrl();

    /**
     * Called right after when a {@link Item} is loaded from disk.
     * This is an opportunity to do a post load processing.
     *
     * @param name
     *      Name of the directory (not a path --- just the name portion) from
     *      which the configuration was loaded. This usually becomes the
     *      {@link #getName() name} of this item.
     */
    void onLoad(ItemGroup<? extends Item> parent, String name) throws IOException;

    /**
     * When a {@link Item} is copied from existing one,
     * the files are first copied on the file system,
     * then it will be loaded, then this method will be invoked
     * to perform any implementation-specific work.
     */
    void onCopiedFrom(Item src);

    /**
     * When an item is created from scratch (instead of copied),
     * this method will be invoked. Used as the post-construction initialization.
     *
     * @since 1.374
      */
    void onCreatedFromScratch();

    /**
     * Save the settings to a file.
     *
     * Use {@link Items#getConfigFile(Item)}
     * or {@link AbstractItem#getConfigFile()} to obtain the file
     * to save the data.
     */
    void save() throws IOException;

    /**
     * Deletes this item.
     */
    void delete() throws IOException, InterruptedException;

    PermissionGroup PERMISSIONS = new PermissionGroup(Item.class,Messages._Item_Permissions_Title());
    Permission CREATE = new Permission(PERMISSIONS, "Create", Messages._Item_CREATE_description(), Permission.CREATE, PermissionScope.ITEM_GROUP);
    Permission DELETE = new Permission(PERMISSIONS, "Delete", Messages._Item_DELETE_description(), Permission.DELETE, PermissionScope.ITEM);
    Permission CONFIGURE = new Permission(PERMISSIONS, "Configure", Messages._Item_CONFIGURE_description(), Permission.CONFIGURE, PermissionScope.ITEM);
    Permission READ = new Permission(PERMISSIONS, "Read", Messages._Item_READ_description(), Permission.READ, PermissionScope.ITEM);
    Permission DISCOVER = new Permission(PERMISSIONS, "Discover", Messages._AbstractProject_DiscoverPermission_Description(), READ, PermissionScope.ITEM);
    /**
     * Ability to view configuration details.
     * If the user lacks {@link CONFIGURE} then any {@link Secret}s must be masked out, even in encrypted form.
     * @see Secret#ENCRYPTED_VALUE_PATTERN
     */
    Permission EXTENDED_READ = new Permission(PERMISSIONS,"ExtendedRead", Messages._AbstractProject_ExtendedReadPermission_Description(), CONFIGURE, Boolean.getBoolean("hudson.security.ExtendedReadPermission"), new PermissionScope[]{PermissionScope.ITEM});
    // TODO the following really belong in Job, not Item, but too late to move since the owner.name is encoded in the ID:
    Permission BUILD = new Permission(PERMISSIONS, "Build", Messages._AbstractProject_BuildPermission_Description(),  Permission.UPDATE, PermissionScope.ITEM);
    Permission WORKSPACE = new Permission(PERMISSIONS, "Workspace", Messages._AbstractProject_WorkspacePermission_Description(), Permission.READ, PermissionScope.ITEM);
    Permission WIPEOUT = new Permission(PERMISSIONS, "WipeOut", Messages._AbstractProject_WipeOutPermission_Description(), null, Functions.isWipeOutPermissionEnabled(), new PermissionScope[]{PermissionScope.ITEM});
    Permission CANCEL = new Permission(PERMISSIONS, "Cancel", Messages._AbstractProject_CancelPermission_Description(), BUILD, PermissionScope.ITEM);
}

## 内容2
### 文件路径：
core/src/main/java/hudson/util/Secret.java
### 代码内容：
package hudson.util;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.trilead.ssh2.crypto.Base64;
import jenkins.model.Jenkins;
import hudson.Util;
import jenkins.security.CryptoConfidentialKey;
import org.kohsuke.stapler.Stapler;

import javax.crypto.SecretKey;
import javax.crypto.Cipher;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.regex.Pattern;
import org.kohsuke.accmod.Restricted;
import org.kohsuke.accmod.restrictions.NoExternalUse;

/**
 * Glorified {@link String} that uses encryption in the persisted form, to avoid accidental exposure of a secret.
 *
 *

 * This is not meant as a protection against code running in the same VM, nor against an attacker
 * who has local file system access on Jenkins master.
 *
 *

 * {@link Secret}s can correctly read-in plain text password, so this allows the existing
 * String field to be updated to {@link Secret}.
 *
 * @author Kohsuke Kawaguchi
 */
public final class Secret implements Serializable {
    /**
     * Unencrypted secret text.
     */
    private final String value;

    private Secret(String value) {
        this.value = value;
    }

    /**
     * Obtains the secret in a plain text.
     *
     * @see #getEncryptedValue()
     * @deprecated as of 1.356
     *      Use {@link #toString(Secret)} to avoid NPE in case Secret is null.
     *      Or if you really know what you are doing, use the {@link #getPlainText()} method.
     */
    @Override
    @Deprecated
    public String toString() {
        return value;
    }

    /**
     * Obtains the plain text password.
     * Before using this method, ask yourself if you'd be better off using {@link Secret#toString(Secret)}
     * to avoid NPE.
     */
    public String getPlainText() {
        return value;
    }

    @Override
    public boolean equals(Object that) {
        return that instanceof Secret && value.equals(((Secret)that).value);
    }

    @Override
    public int hashCode() {
        return value.hashCode();
    }

    /**
     * Turns {@link Jenkins#getSecretKey()} into an AES key.
     *
     * @deprecated
     * This is no longer the key we use to encrypt new information, but we still need this
     * to be able to decrypt what's already persisted.
     */
    @Deprecated
    /*package*/ static SecretKey getLegacyKey() throws GeneralSecurityException {
        String secret = SECRET;
        if(secret==null)    return Jenkins.getInstance().getSecretKeyAsAES128();
        return Util.toAes128Key(secret);
    }

    /**
     * Encrypts {@link #value} and returns it in an encoded printable form.
     *
     * @see #toString()
     */
    public String getEncryptedValue() {
        try {
            Cipher cipher = KEY.encrypt();
            // add the magic suffix which works like a check sum.
            return new String(Base64.encode(cipher.doFinal((value+MAGIC).getBytes("UTF-8"))));
        } catch (GeneralSecurityException e) {
            throw new Error(e); // impossible
        } catch (UnsupportedEncodingException e) {
            throw new Error(e); // impossible
        }
    }

    /**
     * Pattern matching a possible output of {@link #getEncryptedValue}.
     * Basically, any Base64-encoded value.
     * You must then call {@link #decrypt} to eliminate false positives.
     */
    @Restricted(NoExternalUse.class)
    public static final Pattern ENCRYPTED_VALUE_PATTERN = Pattern.compile("[A-Za-z0-9+/]+={0,2}");

    /**
     * Reverse operation of {@link #getEncryptedValue()}. Returns null
     * if the given cipher text was invalid.
     */
    public static Secret decrypt(String data) {
        if(data==null)      return null;
        try {
            byte[] in = Base64.decode(data.toCharArray());
            Secret s = tryDecrypt(KEY.decrypt(), in);
            if (s!=null)    return s;

            // try our historical key for backward compatibility
            Cipher cipher = getCipher("AES");
            cipher.init(Cipher.DECRYPT_MODE, getLegacyKey());
            return tryDecrypt(cipher, in);
        } catch (GeneralSecurityException e) {
            return null;
        } catch (UnsupportedEncodingException e) {
            throw new Error(e); // impossible
        } catch (IOException e) {
            return null;
        }
    }

    /*package*/ static Secret tryDecrypt(Cipher cipher, byte[] in) throws UnsupportedEncodingException {
        try {
            String plainText = new String(cipher.doFinal(in), "UTF-8");
            if(plainText.endsWith(MAGIC))
                return new Secret(plainText.substring(0,plainText.length()-MAGIC.length()));
            return null;
        } catch (GeneralSecurityException e) {
            return null; // if the key doesn't match with the bytes, it can result in BadPaddingException
        }
    }

    /**
     * Workaround for JENKINS-6459 / http://java.net/jira/browse/GLASSFISH-11862
     * This method uses specific provider selected via hudson.util.Secret.provider system property
     * to provide a workaround for the above bug where default provide gives an unusable instance.
     * (Glassfish Enterprise users should set value of this property to "SunJCE")
     */
    public static Cipher getCipher(String algorithm) throws GeneralSecurityException {
        return PROVIDER != null ? Cipher.getInstance(algorithm, PROVIDER)
                                : Cipher.getInstance(algorithm);
    }

    /**
     * Attempts to treat the given string first as a cipher text, and if it doesn't work,
     * treat the given string as the unencrypted secret value.
     *
     *

     * Useful for recovering a value from a form field.
     *
     * @return never null
     */
    public static Secret fromString(String data) {
        data = Util.fixNull(data);
        Secret s = decrypt(data);
        if(s==null) s=new Secret(data);
        return s;
    }

    /**
     * Works just like {@link Secret#toString()} but avoids NPE when the secret is null.
     * To be consistent with {@link #fromString(String)}, this method doesn't distinguish
     * empty password and null password.
     */
    public static String toString(Secret s) {
        return s==null ? "" : s.value;
    }

    public static final class ConverterImpl implements Converter {
        public ConverterImpl() {
        }

        public boolean canConvert(Class type) {
            return type==Secret.class;
        }

        public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
            Secret src = (Secret) source;
            writer.setValue(src.getEncryptedValue());
        }

        public Object unmarshal(HierarchicalStreamReader reader, final UnmarshallingContext context) {
            return fromString(reader.getValue());
        }
    }

    private static final String MAGIC = "::::MAGIC::::";

    /**
     * Workaround for JENKINS-6459 / http://java.net/jira/browse/GLASSFISH-11862
     * @see #getCipher(String)
     */
    private static final String PROVIDER = System.getProperty(Secret.class.getName()+".provider");

    /**
     * For testing only. Override the secret key so that we can test this class without {@link Jenkins}.
     */
    /*package*/ static String SECRET = null;

    /**
     * The key that encrypts the data on disk.
     */
    private static final CryptoConfidentialKey KEY = new CryptoConfidentialKey(Secret.class.getName());

    private static final long serialVersionUID = 1L;

    static {
        Stapler.CONVERT_UTILS.register(new org.apache.commons.beanutils.Converter() {
            public Secret convert(Class type, Object value) {
                return Secret.fromString(value.toString());
            }
        }, Secret.class);
    }
}

## 内容3
### 文件路径：
core/src/main/java/hudson/util/SecretRewriter.java
### 代码内容：
package hudson.util;

import com.trilead.ssh2.crypto.Base64;
import hudson.model.TaskListener;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.security.GeneralSecurityException;
import java.security.InvalidKeyException;
import java.util.HashSet;
import java.util.Set;

/**
 * Rewrites XML files by looking for Secrets that are stored with the old key and replaces them
 * by the new encrypted values.
 *
 * @author Kohsuke Kawaguchi
 */
public class SecretRewriter {
    private final Cipher cipher;
    private final SecretKey key;

    /**
     * How many files have been scanned?
     */
    private int count;

    /**
     * Canonical paths of the directories we are recursing to protect
     * against symlink induced cycles.
     */
    private Set<String> callstack = new HashSet<String>();

    public SecretRewriter() throws GeneralSecurityException {
        cipher = Secret.getCipher("AES");
        key = Secret.getLegacyKey();
    }

    /** @deprecated SECURITY-376: {@code backupDirectory} is ignored */
    @Deprecated
    public SecretRewriter(File backupDirectory) throws GeneralSecurityException {
        this();
    }

    private String tryRewrite(String s) throws IOException, InvalidKeyException {
        if (s.length()<24)
            return s;   // Encrypting "" in Secret produces 24-letter characters, so this must be the minimum length
        if (!isBase64(s))
            return s;   // decode throws IOException if the input is not base64, and this is also a very quick way to filter

        byte[] in;
        try {
            in = Base64.decode(s.toCharArray());
        } catch (IOException e) {
            return s;   // not a valid base64
        }
        cipher.init(Cipher.DECRYPT_MODE, key);
        Secret sec = Secret.tryDecrypt(cipher, in);
        if(sec!=null) // matched
            return sec.getEncryptedValue(); // replace by the new encrypted value
        else // not encrypted with the legacy key. leave it unmodified
            return s;
    }

    /** @deprecated SECURITY-376: {@code backup} is ignored */
    @Deprecated
    public boolean rewrite(File f, File backup) throws InvalidKeyException, IOException {
        return rewrite(f);
    }

    public boolean rewrite(File f) throws InvalidKeyException, IOException {

        AtomicFileWriter w = new AtomicFileWriter(f, "UTF-8");
        try {
            PrintWriter out = new PrintWriter(new BufferedWriter(w));

            boolean modified = false; // did we actually change anything?
            try {
                FileInputStream fin = new FileInputStream(f);
                try {
                    BufferedReader r = new BufferedReader(new InputStreamReader(fin, "UTF-8"));
                    String line;
                    StringBuilder buf = new StringBuilder();

                    while ((line=r.readLine())!=null) {
                        int copied=0;
                        buf.setLength(0);
                        while (true) {
                            int sidx = line.indexOf('>',copied);
                            if (sidx<0) break;
                            int eidx = line.indexOf('<',sidx);
                            if (eidx<0) break;

                            String elementText = line.substring(sidx+1,eidx);
                            String replacement = tryRewrite(elementText);
                            if (!replacement.equals(elementText))
                                modified = true;

                            buf.append(line.substring(copied,sidx+1));
                            buf.append(replacement);
                            copied = eidx;
                        }
                        buf.append(line.substring(copied));
                        out.println(buf.toString());
                    }
                } finally {
                    fin.close();
                }
            } finally {
                out.close();
            }

            if (modified) {
                w.commit();
            }
            return modified;
        } finally {
            w.abort();
        }
    }

    /**
     * Recursively scans and rewrites a directory.
     *
     * This method shouldn't abort just because one file fails to rewrite.
     *
     * @return
     *      Number of files that were actually rewritten.
     */
    // synchronized to prevent accidental concurrent use. this instance is not thread safe
    public synchronized int rewriteRecursive(File dir, TaskListener listener) throws InvalidKeyException {
        return rewriteRecursive(dir,"",listener);
    }
    private int rewriteRecursive(File dir, String relative, TaskListener listener) throws InvalidKeyException {
        String canonical;
        try {
            canonical = dir.getCanonicalPath();
        } catch (IOException e) {
            canonical = dir.getAbsolutePath(); //
        }
        if (!callstack.add(canonical)) {
            listener.getLogger().println("Cycle detected: "+dir);
            return 0;
        }

        try {
            File[] children = dir.listFiles();
            if (children==null)     return 0;

            int rewritten=0;
            for (File child : children) {
                String cn = child.getName();
                if (cn.endsWith(".xml")) {
                    if ((count++)%100==0)
                        listener.getLogger().println("Scanning "+child);
                    try {
                        if (rewrite(child)) {
                            listener.getLogger().println("Rewritten "+child);
                            rewritten++;
                        }
                    } catch (IOException e) {
                        e.printStackTrace(listener.error("Failed to rewrite "+child));
                    }
                }
                if (child.isDirectory()) {
                    if (!isIgnoredDir(child))
                        rewritten += rewriteRecursive(child,
                                relative.length()==0 ? cn : relative+'/'+ cn,
                                listener);
                }
            }
            return rewritten;
        } finally {
            callstack.remove(canonical);
        }
    }

    /**
     * Decides if this directory is worth visiting or not.
     */
    protected boolean isIgnoredDir(File dir) {
        // ignoring the workspace and the artifacts directories. Both of them
        // are potentially large and they do not store any secrets.
        String n = dir.getName();
        return n.equals("workspace") || n.equals("artifacts")
            || n.equals("plugins") // no mutable data here
            || n.equals(".") || n.equals("..");
    }

    private static boolean isBase64(char ch) {
        return 0<=ch && ch<128 && IS_BASE64[ch];
    }

    private static boolean isBase64(String s) {
        for (int i=0; i<s.length(); i++)
            if (!isBase64(s.charAt(i)))
                return false;
        return true;
    }

    private static final boolean[] IS_BASE64 = new boolean[128];
    static {
        String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
        for (int i=0; i<chars.length();i++)
            IS_BASE64[chars.charAt(i)] = true;
    }
}

## 内容4
### 文件路径：
core/src/main/java/jenkins/security/CryptoConfidentialKey.java
### 代码内容：
package jenkins.security;

import hudson.util.Secret;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.security.GeneralSecurityException;

/**
 * {@link ConfidentialKey} that stores a {@link SecretKey} for shared-secret cryptography (AES).
 *
 * @author Kohsuke Kawaguchi
 * @since 1.498
 */
public class CryptoConfidentialKey extends ConfidentialKey {
    private volatile SecretKey secret;
    public CryptoConfidentialKey(String id) {
        super(id);
    }

    public CryptoConfidentialKey(Class owner, String shortName) {
        this(owner.getName()+'.'+shortName);
    }

    private SecretKey getKey() {
        try {
            if (secret==null) {
                synchronized (this) {
                    if (secret==null) {
                        byte[] payload = load();
                        if (payload==null) {
                            payload = ConfidentialStore.get().randomBytes(256);
                            store(payload);
                        }
                        // Due to the stupid US export restriction JDK only ships 128bit version.
                        secret = new SecretKeySpec(payload,0,128/8, ALGORITHM);
                    }
                }
            }
            return secret;
        } catch (IOException e) {
            throw new Error("Failed to load the key: "+getId(),e);
        }
    }

    /**
     * Returns a {@link Cipher} object for encrypting with this key.
     */
    public Cipher encrypt() {
        try {
            Cipher cipher = Secret.getCipher(ALGORITHM);
            cipher.init(Cipher.ENCRYPT_MODE, getKey());
            return cipher;
        } catch (GeneralSecurityException e) {
            throw new AssertionError(e);
        }
    }

    /**
     * Returns a {@link Cipher} object for decrypting with this key.
     */
    public Cipher decrypt() {
        try {
            Cipher cipher = Secret.getCipher(ALGORITHM);
            cipher.init(Cipher.DECRYPT_MODE, getKey());
            return cipher;
        } catch (GeneralSecurityException e) {
            throw new AssertionError(e);
        }
    }

    private static final String ALGORITHM = "AES";
}

Output:
【漏洞类型】弱加密
【严重性】High
【漏洞摘要】原始代码使用ECB模式进行AES加密，而不使用初始化向量（IV），这使得同一明文在多处加密时会产生相同的密文，从而降低了密文的安全性。具体来说，`Secret`类中的`getEncryptedValue`方法使用ECB模式加密`value`字段，并且没有使用IV，这可能导致密文被攻击者通过已知的明文进行攻击，从而解密出敏感信息。
【关键代码模式】
- `Secret`类中的`getEncryptedValue`方法使用ECB模式进行AES加密。
- `CryptoConfidentialKey`类中的`encrypt`方法初始化Cipher对象时没有使用IV。
【修复方法说明】修复方法引入了CBC加密模式，并在加密时使用随机生成的IV，从而提高了密文的安全性。


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/resources/jenkins/security/s2m/filepath-filter.conf
### 代码内容：
# GENERATED FILE. DO NOT MODIFY.
#
# This file is for Jenkins core developers to list what we think are the best filtering rules
# for apparently harmless accesses to files on the Jenkins master from slaves.
#
# To override these rules, place *.conf files by other names into this folder. Files are sorted
# before parsed, so using a lower number allows you to override what we have here. This file
# gets overwritten every time Jenkins starts.
#
# See http://jenkins-ci.org/security-144 for more details.

# This directory contains credentials, master encryption keys, and other sensitive information
# that slaves have absolutely no business with.
# Unless there are rules in other files allowing access to other portions of $JENKINS_HOME,
# this rule as it stands here has no effect, because anything left unspecified is rejected.
deny all <JENKINS_HOME>/secrets($|/.*)

# User content is publicly readable, so quite safe for slaves to read, too.
# (The xunit plugin is known to read from here.)
# https://wiki.jenkins-ci.org/display/JENKINS/User+Content
allow read,stat <JENKINS_HOME>/userContent($|/.*)

# In the next rule we grant general access under build directories, so first we protect
# the actual build record that Jenkins core reads, which nothing should be touching.
deny all <BUILDDIR>/build.xml
# Similarly for Pipeline build (WorkflowRun) metadata:
deny all <BUILDDIR>/program.dat
deny all <BUILDDIR>/workflow($|/.*)

# Various plugins read/write files under build directories, so allow them all.
# - git 1.x writes changelog.xml from the slave (2.x writes from the master so need not be listed)
# - analysis-core and plugins based on it write reports to workspace-files/
# - cobertura writes coverage.xml
# - violations writes violations.xml and other content under violations/
# - dependency-check writes archive/artifacts.txt
# But not allowing deletion to prevent data loss and symlink to prevent jailbreaking.
allow create,mkdirs,read,stat,write <BUILDDIR>/.+

# cobertura also writes out annotated sources to a dir under the job:
allow create,mkdirs,read,stat,write <JENKINS_HOME>/jobs/.+/cobertura.*

# all the other accesses that aren't specified here will be left upto other rules in this directory.
# if no rules in those other files matches, then the access will be rejected.

Output:
【漏洞类型】文件访问控制漏洞
【严重性】High
【漏洞摘要】原始代码中存在文件访问控制漏洞。具体表现为，对`<BUILDDIR>/workflow($|/.*))`的访问控制规则未被明确添加，导致该目录下的所有文件和子目录可能被从Jenkins的从节点（slave）访问。这可能允许未授权的从节点访问和操作敏感的WorkflowRun元数据，从而引发信息泄露或数据破坏的风险。
【关键代码模式】
- `deny all <BUILDDIR>/build.xml`
- `deny all <BUILDDIR>/program.dat`
- 未定义的`<BUILDDIR>/workflow($|/.*))`访问控制规则
【修复方法说明】修复方法通过在`<BUILDDIR>/workflow($|/.*))`目录上添加明确的`deny all`规则，防止从节点访问和操作该目录及其内容，从而解决问题。最佳实践是确保所有敏感目录都有明确的访问控制规则，以防止未授权的访问和操作。


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/slaves/OfflineCause.java
### 代码内容：
package hudson.slaves;

import jenkins.model.Jenkins;
import hudson.Functions;
import hudson.model.Computer;
import hudson.model.User;

import org.jvnet.localizer.Localizable;
import org.kohsuke.stapler.export.ExportedBean;
import org.kohsuke.stapler.export.Exported;

import javax.annotation.Nonnull;
import java.util.Date;

/**
 * Represents a cause that puts a {@linkplain Computer#isOffline() computer offline}.
 *
 *
Views

 *

 * {@link OfflineCause} must have <tt>cause.jelly</tt> that renders a cause
 * into HTML. This is used to tell users why the node is put offline.
 * This view should render a block element like DIV.
 *
 * @author Kohsuke Kawaguchi
 * @since 1.320
 */
@ExportedBean
public abstract class OfflineCause {
    protected final long timestamp = System.currentTimeMillis();

    /**
     * Timestamp in which the event happened.
     *
     * @since 1.612
     */
    @Exported
    public long getTimestamp() {
        return timestamp;
    }

    /**
     * Same as {@link #getTimestamp()} but in a different type.
     *
     * @since 1.612
     */
    public final @Nonnull Date getTime() {
        return new Date(timestamp);
    }

    /**
     * {@link OfflineCause} that renders a static text,
     * but without any further UI.
     */
    public static class SimpleOfflineCause extends OfflineCause {
        public final Localizable description;

        /**
         * @since 1.571
         */
        protected SimpleOfflineCause(Localizable description) {
            this.description = description;
        }

        @Exported(name="description") @Override
        public String toString() {
            return description.toString();
        }
    }

    public static OfflineCause create(Localizable d) {
        if (d==null)    return null;
        return new SimpleOfflineCause(d);
    }

    /**
     * Caused by unexpected channel termination.
     */
    public static class ChannelTermination extends OfflineCause {
        @Exported
        public final Exception cause;

        public ChannelTermination(Exception cause) {
            this.cause = cause;
        }

        public String getShortDescription() {
            return cause.toString();
        }

        @Override public String toString() {
            return Messages.OfflineCause_connection_was_broken_(Functions.printThrowable(cause));
        }
    }

    /**
     * Caused by failure to launch.
     */
    public static class LaunchFailed extends OfflineCause {
        @Override
        public String toString() {
            return Messages.OfflineCause_LaunchFailed();
        }
    }

    /**
     * Taken offline by user.
     * @since 1.551
     */
    public static class UserCause extends SimpleOfflineCause {
        private final User user;

        public UserCause(User user, String message) {
            super(hudson.slaves.Messages._SlaveComputer_DisconnectedBy(
                    user!=null ? user.getId() : Jenkins.ANONYMOUS.getName(),
                    message != null ? " : " + message : ""
            ));
            this.user = user;
        }

        public User getUser() {
            return user;
        }
    }

    public static class ByCLI extends UserCause {
        @Exported
        public final String message;

        public ByCLI(String message) {
            super(User.current(), message);
            this.message = message;
        }
    }
}

Output:
【漏洞类型】对象反序列化漏洞
【严重性】High
【漏洞摘要】原始代码中的`UserCause`类存储了一个`User`对象，该对象在反序列化时可能导致安全问题。具体来说，如果攻击者能够控制`User`对象的序列化数据，他们可以在反序列化过程中执行任意代码，这是由于Java的反序列化机制允许在对象被反序列化时调用`readObject`方法。
【关键代码模式】`User`对象的存储和反序列化。
【修复方法说明】修复方法通过移除`User`对象的存储，改为存储用户的ID，并在需要时通过ID查找用户。这避免了直接反序列化`User`对象的风险。


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/diagnosis/HudsonHomeDiskUsageMonitor.java
### 代码内容：
package hudson.diagnosis;

import hudson.model.AdministrativeMonitor;
import hudson.model.AbstractModelObject;
import hudson.Extension;
import hudson.ExtensionPoint;
import hudson.ExtensionList;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.HttpResponses;
import org.kohsuke.stapler.QueryParameter;
import org.kohsuke.stapler.interceptor.RequirePOST;

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

/**
 * Monitors the disk usage of <tt>JENKINS_HOME</tt>, and if it's almost filled up, warn the user.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public final class HudsonHomeDiskUsageMonitor extends AdministrativeMonitor {
    /**
     * Value updated by {@link HudsonHomeDiskUsageChecker}.
     */
    /*package*/ boolean activated;

    public HudsonHomeDiskUsageMonitor() {
        super("hudsonHomeIsFull");
    }

    public boolean isActivated() {
        return activated;
    }

    @Override
    public String getDisplayName() {
    	return Messages.HudsonHomeDiskUsageMonitor_DisplayName();
    }

    /**
     * Depending on whether the user said "yes" or "no", send him to the right place.
     */
    @RequirePOST
    public HttpResponse doAct(@QueryParameter String no) throws IOException {
        if(no!=null) {
            disable(true);
            return HttpResponses.redirectViaContextPath("/manage");
        } else {
            return HttpResponses.redirectToDot();
        }
    }

    public List<Solution> getSolutions() {
        return Solution.all();
    }

    /**
     * Binds a solution to the URL.
     */
    public Solution getSolution(String id) {
        for( Solution s : Solution.all() )
            if(s.id.equals(id))
                return s;
        return null;
    }

    /**
     * Short cut for getting the singleton instance.
     */
    public static HudsonHomeDiskUsageMonitor get() {
        return all().get(HudsonHomeDiskUsageMonitor.class);
    }

    /**
     * Extension point for suggesting solutions for full JENKINS_HOME.
     *
     *
Views

     *

     *
message.jelly

     *

     * This view is rendered inside an LI tag as a possible solution to the full JENKINS_HOME problem.
     *

     *

     */
    public static abstract class Solution extends AbstractModelObject implements ExtensionPoint {
        /**
         * Human-readable ID of this monitor, which needs to be unique within the system.
         *
         *

         * This ID is used to remember persisted setting for this monitor,
         * so the ID should remain consistent beyond the Hudson JVM lifespan.
         */
        public final String id;

        protected Solution(String id) {
            this.id = id;
        }

        protected Solution() {
            this.id = this.getClass().getName();
        }

        /**
         * Returns the URL of this monitor, relative to the context path.
         */
        public String getUrl() {
            return HudsonHomeDiskUsageMonitor.get().getUrl()+"/solution/"+id;
        }

        /**
         * All registered {@link Solution}s.
         */
        public static ExtensionList<Solution> all() {
            return ExtensionList.lookup(Solution.class);
        }
    }
}

## 内容2
### 文件路径：
core/src/main/java/hudson/diagnosis/OldDataMonitor.java
### 代码内容：
package hudson.diagnosis;

import com.google.common.base.Predicate;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import hudson.Extension;
import hudson.XmlFile;
import hudson.model.AdministrativeMonitor;
import hudson.model.Item;
import hudson.model.Job;
import hudson.model.ManagementLink;
import hudson.model.Run;
import hudson.model.Saveable;
import hudson.model.listeners.ItemListener;
import hudson.model.listeners.RunListener;
import hudson.model.listeners.SaveableListener;
import hudson.security.ACL;
import hudson.util.RobustReflectionConverter;
import hudson.util.VersionNumber;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.CheckForNull;

import jenkins.model.Jenkins;
import org.acegisecurity.context.SecurityContext;
import org.acegisecurity.context.SecurityContextHolder;
import org.kohsuke.accmod.Restricted;
import org.kohsuke.accmod.restrictions.NoExternalUse;
import org.kohsuke.stapler.HttpRedirect;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.HttpResponses;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.StaplerResponse;
import org.kohsuke.stapler.interceptor.RequirePOST;

/**
 * Tracks whether any data structure changes were corrected when loading XML,
 * that could be resaved to migrate that data to the new format.
 *
 * @author Alan.Harder@Sun.Com
 */
@Extension
public class OldDataMonitor extends AdministrativeMonitor {
    private static final Logger LOGGER = Logger.getLogger(OldDataMonitor.class.getName());

    private ConcurrentMap<SaveableReference,VersionRange> data = new ConcurrentHashMap<SaveableReference,VersionRange>();

    static OldDataMonitor get(Jenkins j) {
        return (OldDataMonitor) j.getAdministrativeMonitor("OldData");
    }

    public OldDataMonitor() {
        super("OldData");
    }

    @Override
    public String getDisplayName() {
        return Messages.OldDataMonitor_DisplayName();
    }

    public boolean isActivated() {
        return !data.isEmpty();
    }

    public Map<Saveable,VersionRange> getData() {
        Map<Saveable,VersionRange> r = new HashMap<Saveable,VersionRange>();
        for (Map.Entry<SaveableReference,VersionRange> entry : this.data.entrySet()) {
            Saveable s = entry.getKey().get();
            if (s != null) {
                r.put(s, entry.getValue());
            }
        }
        return r;
    }

    private static void remove(Saveable obj, boolean isDelete) {
        Jenkins j = Jenkins.getInstance();
        if (j != null) {
            OldDataMonitor odm = get(j);
            SecurityContext oldContext = ACL.impersonate(ACL.SYSTEM);
            try {
                odm.data.remove(referTo(obj));
                if (isDelete && obj instanceof Job<?, ?>) {
                    for (Run r : ((Job<?, ?>) obj).getBuilds()) {
                        odm.data.remove(referTo(r));
                    }
                }
            } finally {
                SecurityContextHolder.setContext(oldContext);
            }
        }
    }

    // Listeners to remove data here if resaved or deleted in regular Hudson usage

    @Extension
    public static final SaveableListener changeListener = new SaveableListener() {
        @Override
        public void onChange(Saveable obj, XmlFile file) {
            remove(obj, false);
        }
    };

    @Extension
    public static final ItemListener itemDeleteListener = new ItemListener() {
        @Override
        public void onDeleted(Item item) {
            remove(item, true);
        }
    };

    @Extension
    public static final RunListener<Run> runDeleteListener = new RunListener<Run>() {
        @Override
        public void onDeleted(Run run) {
            remove(run, true);
        }
    };

    /**
     * Inform monitor that some data in a deprecated format has been loaded,
     * and converted in-memory to a new structure.
     * @param obj Saveable object; calling save() on this object will persist
     *            the data in its new format to disk.
     * @param version Hudson release when the data structure changed.
     */
    public static void report(Saveable obj, String version) {
        OldDataMonitor odm = get(Jenkins.getInstance());
        try {
            SaveableReference ref = referTo(obj);
            while (true) {
                VersionRange vr = odm.data.get(ref);
                if (vr != null && odm.data.replace(ref, vr, new VersionRange(vr, version, null))) {
                    break;
                } else if (odm.data.putIfAbsent(ref, new VersionRange(null, version, null)) == null) {
                    break;
                }
            }
        } catch (IllegalArgumentException ex) {
            LOGGER.log(Level.WARNING, "Bad parameter given to OldDataMonitor", ex);
        }
    }

    /**
     * Inform monitor that some data in a deprecated format has been loaded, during
     * XStream unmarshalling when the Saveable containing this object is not available.
     * @param context XStream unmarshalling context
     * @param version Hudson release when the data structure changed.
     */
    public static void report(UnmarshallingContext context, String version) {
        RobustReflectionConverter.addErrorInContext(context, new ReportException(version));
    }

    private static class ReportException extends Exception {
        private String version;
        private ReportException(String version) {
            this.version = version;
        }
    }

    /**
     * Inform monitor that some unreadable data was found while loading.
     * @param obj Saveable object; calling save() on this object will discard the unreadable data.
     * @param errors Exception(s) thrown while loading, regarding the unreadable classes/fields.
     */
    public static void report(Saveable obj, Collection<Throwable> errors) {
        StringBuilder buf = new StringBuilder();
        int i = 0;
        for (Throwable e : errors) {
            if (e instanceof ReportException) {
                report(obj, ((ReportException)e).version);
            } else {
                if (++i > 1) buf.append(", ");
                buf.append(e.getClass().getSimpleName()).append(": ").append(e.getMessage());
            }
        }
        if (buf.length() == 0) return;
        Jenkins j = Jenkins.getInstance();
        if (j == null) {
            // Startup failed, something is very broken, so report what we can.
            for (Throwable t : errors) {
                LOGGER.log(Level.WARNING, "could not read " + obj + " (and Jenkins did not start up)", t);
            }
            return;
        }
        OldDataMonitor odm = get(j);
        SaveableReference ref = referTo(obj);
        while (true) {
            VersionRange vr = odm.data.get(ref);
            if (vr != null && odm.data.replace(ref, vr, new VersionRange(vr, null, buf.toString()))) {
                break;
            } else if (odm.data.putIfAbsent(ref, new VersionRange(null, null, buf.toString())) == null) {
                break;
            }
        }
    }

    public static class VersionRange {
        private static VersionNumber currentVersion = Jenkins.getVersion();

        final VersionNumber min;
        final VersionNumber max;
        final boolean single;
        final public String extra;

        public VersionRange(VersionRange previous, String version, String extra) {
            if (previous == null) {
                min = max = version != null ? new VersionNumber(version) : null;
                this.single = true;
                this.extra = extra;
            } else if (version == null) {
                min = previous.min;
                max = previous.max;
                single = previous.single;
                this.extra = extra;
            } else {
                VersionNumber ver = new VersionNumber(version);
                if (previous.min == null || ver.isOlderThan(previous.min)) {
                    this.min = ver;
                } else {
                    this.min = previous.min;
                }
                if (previous.max == null || ver.isNewerThan(previous.max)) {
                    this.max = ver;
                } else {
                    this.max = previous.max;
                }
                this.single = this.max.isNewerThan(this.min);
                this.extra = extra;
            }
        }

        @Override
        public String toString() {
            return min==null ? "" : min.toString() + (single ? "" : " - " + max.toString());
        }

        /**
         * Does this version range contain a version more than the given number of releases ago?
         * @param threshold Number of releases
         * @return True if the major version# differs or the minor# differs by >= threshold
         */
        public boolean isOld(int threshold) {
            return currentVersion != null && min != null && (currentVersion.digit(0) > min.digit(0)
                    || (currentVersion.digit(0) == min.digit(0)
                    && currentVersion.digit(1) - min.digit(1) >= threshold));
        }

    }

    /**
     * Sorted list of unique max-versions in the data set.  For select list in jelly.
     */
    @Restricted(NoExternalUse.class)
    public Iterator<VersionNumber> getVersionList() {
        TreeSet<VersionNumber> set = new TreeSet<VersionNumber>();
        for (VersionRange vr : data.values()) {
            if (vr.max != null) {
                set.add(vr.max);
            }
        }
        return set.iterator();
    }

    /**
     * Depending on whether the user said "yes" or "no", send him to the right place.
     */
    @RequirePOST
    public HttpResponse doAct(StaplerRequest req, StaplerResponse rsp) throws IOException {
        if (req.hasParameter("no")) {
            disable(true);
            return HttpResponses.redirectViaContextPath("/manage");
        } else {
            return new HttpRedirect("manage");
        }
    }

    /**
     * Save all or some of the files to persist data in the new forms.
     * Remove those items from the data map.
     */
    @RequirePOST
    public HttpResponse doUpgrade(StaplerRequest req, StaplerResponse rsp) {
        final String thruVerParam = req.getParameter("thruVer");
        final VersionNumber thruVer = thruVerParam.equals("all") ? null : new VersionNumber(thruVerParam);

        saveAndRemoveEntries(new Predicate<Map.Entry<SaveableReference, VersionRange>>() {
            @Override
            public boolean apply(Map.Entry<SaveableReference, VersionRange> entry) {
                VersionNumber version = entry.getValue().max;
                return version != null && (thruVer == null || !version.isNewerThan(thruVer));
            }
        });

        return HttpResponses.forwardToPreviousPage();
    }

    /**
     * Save all files containing only unreadable data (no data upgrades), which discards this data.
     * Remove those items from the data map.
     */
    @RequirePOST
    public HttpResponse doDiscard(StaplerRequest req, StaplerResponse rsp) {
        saveAndRemoveEntries( new Predicate<Map.Entry<SaveableReference,VersionRange>>() {
            @Override
            public boolean apply(Map.Entry<SaveableReference, VersionRange> entry) {
                return entry.getValue().max == null;
            }
        });

        return HttpResponses.forwardToPreviousPage();
    }

    private void saveAndRemoveEntries(Predicate<Map.Entry<SaveableReference, VersionRange>> matchingPredicate) {
        /*
         * Note that there a race condition here: we acquire the lock and get localCopy which includes some
         * project (say); then we go through our loop and save that project; then someone POSTs a new
         * config.xml for the project with some old data, causing remove to be called and the project to be
         * added to data (in the new version); then we hit the end of this method and the project is removed
         * from data again, even though it again has old data.
         *
         * In practice this condition is extremely unlikely, and not a major problem even if it
         * does occur: just means the user will be prompted to discard less than they should have been (and
         * would see the warning again after next restart).
         */
        List<SaveableReference> removed = new ArrayList<SaveableReference>();
        for (Map.Entry<SaveableReference,VersionRange> entry : data.entrySet()) {
            if (matchingPredicate.apply(entry)) {
                Saveable s = entry.getKey().get();
                if (s != null) {
                    try {
                        s.save();
                    } catch (Exception x) {
                        LOGGER.log(Level.WARNING, "failed to save " + s, x);
                    }
                }
                removed.add(entry.getKey());
            }
        }

        data.keySet().removeAll(removed);
    }

    public HttpResponse doIndex(StaplerResponse rsp) throws IOException {
        return new HttpRedirect("manage");
    }

    /** Reference to a saveable object that need not actually hold it in heap. */
    private interface SaveableReference {
        @CheckForNull Saveable get();
        // must also define equals, hashCode
    }

    private static SaveableReference referTo(Saveable s) {
        if (s instanceof Run) {
            Job parent = ((Run) s).getParent();
            if (Jenkins.getInstance().getItemByFullName(parent.getFullName()) == parent) {
                return new RunSaveableReference((Run) s);
            }
        }
        return new SimpleSaveableReference(s);
    }

    private static final class SimpleSaveableReference implements SaveableReference {
        private final Saveable instance;
        SimpleSaveableReference(Saveable instance) {
            this.instance = instance;
        }
        @Override public Saveable get() {
            return instance;
        }
        @Override public int hashCode() {
            return instance.hashCode();
        }
        @Override public boolean equals(Object obj) {
            return obj instanceof SimpleSaveableReference && instance.equals(((SimpleSaveableReference) obj).instance);
        }
    }

    // could easily make an ItemSaveableReference, but Jenkins holds all these strongly, so why bother

    private static final class RunSaveableReference implements SaveableReference {
        private final String id;
        RunSaveableReference(Run<?,?> r) {
            id = r.getExternalizableId();
        }
        @Override public Saveable get() {
            try {
                return Run.fromExternalizableId(id);
            } catch (IllegalArgumentException x) {
                // Typically meaning the job or build was since deleted.
                LOGGER.log(Level.FINE, null, x);
                return null;
            }
        }
        @Override public int hashCode() {
            return id.hashCode();
        }
        @Override public boolean equals(Object obj) {
            return obj instanceof RunSaveableReference && id.equals(((RunSaveableReference) obj).id);
        }
    }

    @Extension
    public static class ManagementLinkImpl extends ManagementLink {
        @Override
        public String getIconFileName() {
            return "document.png";
        }

        @Override
        public String getUrlName() {
            return "administrativeMonitor/OldData/";
        }

        @Override
        public String getDescription() {
            return Messages.OldDataMonitor_Description();
        }

        public String getDisplayName() {
            return Messages.OldDataMonitor_DisplayName();
        }
    }
}

## 内容3
### 文件路径：
core/src/main/java/hudson/diagnosis/ReverseProxySetupMonitor.java
### 代码内容：
package hudson.diagnosis;

import hudson.Extension;
import hudson.Util;
import hudson.model.AdministrativeMonitor;
import org.kohsuke.stapler.HttpRedirect;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.HttpResponses;
import org.kohsuke.stapler.QueryParameter;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import jenkins.model.Jenkins;
import org.kohsuke.stapler.Stapler;
import org.kohsuke.stapler.interceptor.RequirePOST;

/**
 * Looks out for a broken reverse proxy setup that doesn't rewrite the location header correctly.
 *
 *

 * Have the JavaScript make an AJAX call, to which we respond with 302 redirect. If the reverse proxy
 * is done correctly, this will be handled by {@link #doFoo()}, but otherwise we'll report that as an error.
 * Unfortunately, {@code XmlHttpRequest} doesn't expose properties that allow the client-side JavaScript
 * to learn the details of the failure, so we have to make do with limited information.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class ReverseProxySetupMonitor extends AdministrativeMonitor {

    private static final Logger LOGGER = Logger.getLogger(ReverseProxySetupMonitor.class.getName());

    @Override
    public boolean isActivated() {
        // return true to always inject an HTML fragment to perform a test
        return true;
    }

    public HttpResponse doTest() {
        String referer = Stapler.getCurrentRequest().getReferer();
        Jenkins j = Jenkins.getInstance();
        assert j != null;
        // May need to send an absolute URL, since handling of HttpRedirect with a relative URL does not currently honor X-Forwarded-Proto/Port at all.
        String redirect = j.getRootUrl() + "administrativeMonitor/" + id + "/testForReverseProxySetup/" + (referer != null ? Util.rawEncode(referer) : "NO-REFERER") + "/";
        LOGGER.log(Level.FINE, "coming from {0} and redirecting to {1}", new Object[] {referer, redirect});
        return new HttpRedirect(redirect);
    }

    public void getTestForReverseProxySetup(String rest) {
        Jenkins j = Jenkins.getInstance();
        assert j != null;
        String inferred = j.getRootUrlFromRequest() + "manage";
        // TODO this could also verify that j.getRootUrl() has been properly configured, and send a different message if not
        if (rest.startsWith(inferred)) { // not using equals due to JENKINS-24014
            throw HttpResponses.ok();
        } else {
            LOGGER.log(Level.WARNING, "{0} vs. {1}", new Object[] {inferred, rest});
            throw HttpResponses.errorWithoutStack(404, inferred + " vs. " + rest);
        }
    }

    /**
     * Depending on whether the user said "yes" or "no", send him to the right place.
     */
    @RequirePOST
    public HttpResponse doAct(@QueryParameter String no) throws IOException {
        if(no!=null) { // dismiss
            disable(true);
            // of course the irony is that this redirect won't work
            return HttpResponses.redirectViaContextPath("/manage");
        } else {
            return new HttpRedirect("https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+says+my+reverse+proxy+setup+is+broken");
        }
    }
}

## 内容4
### 文件路径：
core/src/main/java/hudson/diagnosis/TooManyJobsButNoView.java
### 代码内容：
package hudson.diagnosis;

import hudson.model.AdministrativeMonitor;
import jenkins.model.Jenkins;
import hudson.Extension;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.StaplerResponse;
import org.kohsuke.stapler.interceptor.RequirePOST;

import java.io.IOException;

/**
 * If Hudson is run with a lot of jobs but no views, suggest the user that they can create views.
 *
 *

 * I noticed at an user visit that some users didn't notice the '+' icon in the tab bar.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class TooManyJobsButNoView extends AdministrativeMonitor {
    public boolean isActivated() {
        Jenkins h = Jenkins.getInstance();
        return h.getViews().size()==1 && h.getItemMap().size()> THRESHOLD;
    }

    /**
     * Depending on whether the user said "yes" or "no", send him to the right place.
     */
    @RequirePOST
    public void doAct(StaplerRequest req, StaplerResponse rsp) throws IOException {
        if(req.hasParameter("no")) {
            disable(true);
            rsp.sendRedirect(req.getContextPath()+"/manage");
        } else {
            rsp.sendRedirect(req.getContextPath()+"/newView");
        }
    }

    public static final int THRESHOLD = 16;
}

## 内容5
### 文件路径：
core/src/main/java/hudson/model/AdministrativeMonitor.java
### 代码内容：
package hudson.model;

import hudson.ExtensionPoint;
import hudson.ExtensionList;
import hudson.Extension;
import hudson.ExtensionPoint.LegacyInstancesAreScopedToHudson;
import hudson.triggers.SCMTrigger;
import hudson.triggers.TimerTrigger;

import java.util.Set;
import java.io.IOException;

import jenkins.model.Jenkins;
import org.kohsuke.accmod.Restricted;
import org.kohsuke.accmod.restrictions.NoExternalUse;
import org.kohsuke.stapler.StaplerProxy;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.StaplerResponse;
import org.kohsuke.stapler.interceptor.RequirePOST;

/**
 * Checks the health of a subsystem of Jenkins and if there's something
 * that requires administrator's attention, notify the administrator.
 *
 *
How to implement?

 *

 * Plugins who wish to contribute such notifications can implement this
 * class and put {@link Extension} on it to register it to Jenkins.
 *
 *

 * Once installed, it's the implementer's responsibility to perform
 * monitoring and activate/deactivate the monitor accordingly. Sometimes
 * this can be done by updating a flag from code (see {@link SCMTrigger}
 * for one such example), while other times it's more convenient to do
 * so by running some code periodically (for this, use {@link TimerTrigger#timer})
 *
 *

 * {@link AdministrativeMonitor}s are bound to URL by {@link Jenkins#getAdministrativeMonitor(String)}.
 * See {@link #getUrl()}.
 *
 *
Views

 *

 *
message.jelly

 *

 * If {@link #isActivated()} returns true, Jenkins will use the <tt>message.jelly</tt>
 * view of this object to render the warning text. This happens in the
 * <tt>http://SERVER/jenkins/manage</tt> page. This view should typically render
 * a DIV box with class='error' or class='warning' with a human-readable text
 * inside it. It often also contains a link to a page that provides more details
 * about the problem.
 *

 *

 *
 * @author Kohsuke Kawaguchi
 * @since 1.273
 * @see Jenkins#administrativeMonitors
 */
@LegacyInstancesAreScopedToHudson
public abstract class AdministrativeMonitor extends AbstractModelObject implements ExtensionPoint, StaplerProxy {
    /**
     * Human-readable ID of this monitor, which needs to be unique within the system.
     *
     *

     * This ID is used to remember persisted setting for this monitor,
     * so the ID should remain consistent beyond the Hudson JVM lifespan.
     */
    public final String id;

    protected AdministrativeMonitor(String id) {
        this.id = id;
    }

    protected AdministrativeMonitor() {
        this.id = this.getClass().getName();
    }

    /**
     * Returns the URL of this monitor, relative to the context path, like "administrativeMonitor/foobar".
     */
    public String getUrl() {
        return "administrativeMonitor/"+id;
    }

    public String getDisplayName() {
        return id;
    }

    public final String getSearchUrl() {
        return getUrl();
    }

    /**
     * Mark this monitor as disabled, to prevent this from showing up in the UI.
     */
    public void disable(boolean value) throws IOException {
        AbstractCIBase hudson = Jenkins.getInstance();
        Set<String> set = hudson.disabledAdministrativeMonitors;
        if(value)   set.add(id);
        else        set.remove(id);
        hudson.save();
    }

    /**
     * Returns true if this monitor {@link #disable(boolean) isn't disabled} earlier.
     *
     *

     * This flag implements the ability for the admin to say "no thank you" to the monitor that
     * he wants to ignore.
     */
    public boolean isEnabled() {
        return !((AbstractCIBase)Jenkins.getInstance()).disabledAdministrativeMonitors.contains(id);
    }

    /**
     * Returns true if this monitor is activated and
     * wants to produce a warning message.
     *
     *

     * This method is called from the HTML rendering thread,
     * so it should run efficiently.
     */
    public abstract boolean isActivated();

    /**
     * URL binding to disable this monitor.
     */
    @RequirePOST
    public void doDisable(StaplerRequest req, StaplerResponse rsp) throws IOException {
        disable(true);
        rsp.sendRedirect2(req.getContextPath()+"/manage");
    }

    /**
     * Requires ADMINISTER permission for any operation in here.
     */
    @Restricted(NoExternalUse.class)
    public Object getTarget() {
        Jenkins.getInstance().checkPermission(Jenkins.ADMINISTER);
        return this;
    }

    /**
     * All registered {@link AdministrativeMonitor} instances.
     */
    public static ExtensionList<AdministrativeMonitor> all() {
        return ExtensionList.lookup(AdministrativeMonitor.class);
    }
}

## 内容6
### 文件路径：
core/src/main/java/jenkins/diagnostics/SecurityIsOffMonitor.java
### 代码内容：
package jenkins.diagnostics;

import hudson.Extension;
import hudson.model.AdministrativeMonitor;
import jenkins.model.Jenkins;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.StaplerResponse;
import org.kohsuke.stapler.interceptor.RequirePOST;

import java.io.IOException;

/**
 * Unsecured Jenkins is, well, insecure.
 *
 *

 * Call attention to the fact that Jenkins is not secured, and encourage the administrator
 * to take an action.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class SecurityIsOffMonitor extends AdministrativeMonitor {
    @Override
    public boolean isActivated() {
        return !Jenkins.getInstance().isUseSecurity();
    }

    /**
     * Depending on whether the user said "yes" or "no", send him to the right place.
     */
    @RequirePOST
    public void doAct(StaplerRequest req, StaplerResponse rsp) throws IOException {
        if(req.hasParameter("no")) {
            disable(true);
            rsp.sendRedirect(req.getContextPath()+"/manage");
        } else {
            rsp.sendRedirect(req.getContextPath()+"/configureSecurity");
        }
    }
}

## 内容7
### 文件路径：
core/src/main/java/jenkins/security/RekeySecretAdminMonitor.java
### 代码内容：
package jenkins.security;

import hudson.Extension;
import hudson.init.InitMilestone;
import hudson.init.Initializer;
import hudson.model.TaskListener;
import hudson.util.HttpResponses;
import hudson.util.SecretRewriter;
import hudson.util.VersionNumber;
import jenkins.management.AsynchronousAdministrativeMonitor;
import jenkins.model.Jenkins;
import jenkins.util.io.FileBoolean;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.interceptor.RequirePOST;

import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.security.GeneralSecurityException;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Warns the administrator to run {@link SecretRewriter}
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class RekeySecretAdminMonitor extends AsynchronousAdministrativeMonitor {

    /**
     * Whether we detected a need to run the rewrite program.
     * Once we set it to true, we'll never turn it off.
     *
     * If the admin decides to dismiss this warning, we use {@link #isEnabled()} for that.
     *
     * In this way we can correctly differentiate all the different states.
     */
    private final FileBoolean needed = state("needed");

    /**
     * If the scanning process has run to the completion, we set to this true.
     */
    private final FileBoolean done = state("done");

    /**
     * If the rewrite process is scheduled upon the next boot.
     */
    private final FileBoolean scanOnBoot = state("scanOnBoot");

    public RekeySecretAdminMonitor() throws IOException {
        // if JENKINS_HOME existed <1.497, we need to offer rewrite
        // this computation needs to be done and the value be captured,
        // since $JENKINS_HOME/config.xml can be saved later before the user has
        // actually rewritten XML files.
        Jenkins j = Jenkins.getInstance();
        if (j.isUpgradedFromBefore(new VersionNumber("1.496.*"))
        &&  new FileBoolean(new File(j.getRootDir(),"secret.key.not-so-secret")).isOff())
            needed.on();
    }

    @Override
    public boolean isActivated() {
        return needed.isOn();
    }

    /**
     * Indicates that the re-keying has run to the completion.
     */
    public boolean isDone() {
        return done.isOn();
    }

    public void setNeeded() {
        needed.on();
    }

    public boolean isScanOnBoot() {
        return scanOnBoot.isOn();
    }

    @RequirePOST
    public HttpResponse doScan(StaplerRequest req) throws IOException, GeneralSecurityException {
        if(req.hasParameter("background")) {
            start(false);
        } else
        if(req.hasParameter("schedule")) {
            scanOnBoot.on();
        } else
        if(req.hasParameter("dismiss")) {
            disable(true);
        } else
            throw HttpResponses.error(400,"Invalid request submission: " + req.getParameterMap());

        return HttpResponses.redirectViaContextPath("/manage");
    }

    private FileBoolean state(String name) {
        return new FileBoolean(new File(getBaseDir(),name));
    }

    @Initializer(fatal=false,after=InitMilestone.PLUGINS_STARTED,before=InitMilestone.EXTENSIONS_AUGMENTED)
    // as early as possible, but this needs to be late enough that the ConfidentialStore is available
    public static void scanOnReboot() throws InterruptedException, IOException, GeneralSecurityException {
        RekeySecretAdminMonitor m = new RekeySecretAdminMonitor();  // throw-away instance

        FileBoolean flag = m.scanOnBoot;
        if (flag.isOn()) {
            flag.off();
            m.start(false).join();
            // block the boot until the rewrite process is complete
            // don't let the failure in RekeyThread block Jenkins boot.
        }
    }

    @Override
    public String getDisplayName() {
        return Messages.RekeySecretAdminMonitor_DisplayName();
    }

    /**
     * Rewrite log file.
     */
    @Override
    protected File getLogFile() {
        return new File(getBaseDir(),"rekey.log");
    }

    @Override
    protected void fix(TaskListener listener) throws Exception {
        LOGGER.info("Initiating a re-keying of secrets. See "+getLogFile());

        SecretRewriter rewriter = new SecretRewriter(new File(getBaseDir(),"backups"));

        try {
            PrintStream log = listener.getLogger();
            log.println("Started re-keying " + new Date());
            int count = rewriter.rewriteRecursive(Jenkins.getInstance().getRootDir(), listener);
            log.printf("Completed re-keying %d files on %s\n",count,new Date());
            new RekeySecretAdminMonitor().done.on();
            LOGGER.info("Secret re-keying completed");
        } catch (Exception e) {
            LOGGER.log(Level.SEVERE, "Fatal failure in re-keying secrets",e);
            e.printStackTrace(listener.error("Fatal failure in rewriting secrets"));
        }
    }

    private static final Logger LOGGER = Logger.getLogger(RekeySecretAdminMonitor.class.getName());

}

## 内容8
### 文件路径：
core/src/main/java/jenkins/security/s2m/AdminCallableMonitor.java
### 代码内容：
package jenkins.security.s2m;

import hudson.Extension;
import hudson.FilePath;
import hudson.model.AdministrativeMonitor;
import hudson.remoting.Callable;
import jenkins.model.Jenkins;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.HttpResponses;
import org.kohsuke.stapler.QueryParameter;
import org.kohsuke.stapler.interceptor.RequirePOST;

import javax.inject.Inject;
import java.io.IOException;

/**
 * Report any rejected {@link Callable}s and {@link FilePath} executions and allow
 * admins to whitelist them.
 *
 * @since 1.THU
 * @author Kohsuke Kawaguchi
 */
@Extension
public class AdminCallableMonitor extends AdministrativeMonitor {
    @Inject
    Jenkins jenkins;

    @Inject
    AdminWhitelistRule rule;

    public AdminCallableMonitor() {
        super("slaveToMasterAccessControl");
    }

    @Override
    public boolean isActivated() {
        return !rule.rejected.describe().isEmpty();
    }

    @Override
    public String getDisplayName() {
        return "Slave \u2192 Master Access Control";
    }

    // bind this to URL
    public AdminWhitelistRule getRule() {
        return rule;
    }

    /**
     * Depending on whether the user said "examin" or "dismiss", send him to the right place.
     */
    @RequirePOST
    public HttpResponse doAct(@QueryParameter String dismiss) throws IOException {
        if(dismiss!=null) {
            disable(true);
            return HttpResponses.redirectViaContextPath("/manage");
        } else {
            return HttpResponses.redirectTo("rule/");
        }
    }

    public HttpResponse doIndex() {
        return HttpResponses.redirectTo("rule/");
    }
}

## 内容9
### 文件路径：
core/src/main/java/jenkins/security/s2m/MasterKillSwitchWarning.java
### 代码内容：
package jenkins.security.s2m;

import hudson.Extension;
import hudson.model.AdministrativeMonitor;
import org.kohsuke.stapler.HttpResponse;
import org.kohsuke.stapler.HttpResponses;
import org.kohsuke.stapler.QueryParameter;
import org.kohsuke.stapler.interceptor.RequirePOST;

import javax.inject.Inject;
import java.io.IOException;

/**
 * If {@link AdminWhitelistRule#masterKillSwitch} is on, warn the user.
 *
 * @author Kohsuke Kawaguchi
 * @since 1.THU
 */
@Extension
public class MasterKillSwitchWarning extends AdministrativeMonitor {
    @Inject
    AdminWhitelistRule rule;

    @Inject
    MasterKillSwitchConfiguration config;

    @Override
    public boolean isActivated() {
        return rule.getMasterKillSwitch() && config.isRelevant();
    }

    @RequirePOST
    public HttpResponse doAct(@QueryParameter String dismiss) throws IOException {
        if(dismiss!=null) {
            disable(true);
            return HttpResponses.redirectViaContextPath("/manage");
        } else {
            return HttpResponses.redirectViaContextPath("configureSecurity");
        }
    }
}

## 内容10
### 文件路径：
core/src/main/resources/hudson/diagnosis/HudsonHomeDiskUsageMonitor/index.jelly
### 代码内容：

<?jelly escape-by-default='true'?>
<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:i="jelly:fmt">
	<l:layout title="${%JENKINS_HOME is almost full}">
		<l:main-panel>

        <l:icon class="icon-warning icon-xlg"/>
        ${%blurb}

        ${%description.1(app.rootDir)}

        ${%description.2}

          ${%solution.1}

          ${%solution.2}

        <j:forEach var="s" items="${it.solutions}">

            <st:include page="message.jelly" it="${s}" />

        </j:forEach>

    </l:main-panel>
	</l:layout>
</j:jelly>

## 内容11
### 文件路径：
core/src/main/resources/hudson/diagnosis/OldDataMonitor/manage.jelly
### 代码内容：

<?jelly escape-by-default='true'?>
<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
<l:layout title="${%Manage Old Data}">
  <st:include page="sidepanel.jelly" it="${app}"/>
  <l:main-panel>

${%Manage Old Data}

${%blurb.1}

${%blurb.2}

${%Type}	${%Name}	${%Version}

      <j:forEach var="item" items="${it.data.entrySet()}">
        <j:set var="obj" value="${item.key}"/>
        <j:set var="range" value="${item.value}"/>
        <j:choose>
          <j:when test="${range!=''}">
            <j:if test="${range.isOld(150)}"><j:set var="range">${range}</j:set></j:if>

              ${obj.class.name}

              ${obj.fullName?:obj.fullDisplayName?:obj.displayName?:obj.name}
              ${range}
              ${item.value.extra}

          </j:when>
          <j:otherwise>
            <j:if test="${item.value.extra!=null}"><j:set var="hasExtra" value="${true}"/></j:if>
          </j:otherwise>
        </j:choose>
      </j:forEach>

${%blurb.3}

${%blurb.4}

    <j:set var="vers" value="${it.versionList}"/>
    <j:choose>
      <j:when test="${vers.hasNext()}">
        <form action="upgrade" method="POST" name="oldDataUpgrade">
          ${%Resave data files with structure changes no newer than Jenkins}
          <select name="thruVer">
            <j:forEach var="ver" items="${vers}">
              <f:option>${ver}</f:option>
            </j:forEach>
          </select>
          ${%blurb.5}

          <f:submit value="${%Upgrade}"/>
        </form>
      </j:when>
      <j:otherwise>
        ${%No old data was found.}
      </j:otherwise>
    </j:choose>
    <j:if test="${hasExtra}">

${%Unreadable Data}

${%blurb.6}

${%Type}	${%Name}	${%Error}

        <j:forEach var="item" items="${it.data.entrySet()}">
          <j:if test="${item.value.extra!=null and item.value==''}">
            <j:set var="obj" value="${item.key}"/>

              ${obj.class.name}
              ${obj.fullName?:obj.fullDisplayName?:obj.displayName?:obj.name}
              ${item.value.extra}

          </j:if>
        </j:forEach>

      <form action="discard" method="POST" name="discardUnreadable">
        <f:submit value="${%Discard Unreadable Data}"/>
      </form>
    </j:if>
  </l:main-panel>
</l:layout>
</j:jelly>

Output:
【漏洞类型】CSRF（跨站请求伪造）漏洞
【严重性】中等
【漏洞摘要】由于`@RequirePOST`注解的缺失，`doAct`方法在未经用户确认的情况下，直接处理GET请求。例如，在`HudsonHomeDiskUsageMonitor.java`中，`doAct`方法没有使用`@RequirePOST`注解，这可能导致攻击者通过构造一个恶意的GET请求来绕过确认步骤，从而禁用监控或执行其他操作。根本原因在于未对用户操作进行适当的验证，使得应用程序容易受到CSRF攻击。
【关键代码模式】`doAct`方法的定义，特别是未使用`@RequirePOST`注解的方法。
【修复方法说明】通过在`doAct`方法上添加`@RequirePOST`注解，限制了该方法只能通过POST请求调用，从而防止了CSRF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：
war/src/main/webapp/scripts/hudson-behavior.js
### 代码内容：
//
//
// JavaScript for Jenkins
//     See http://www.ibm.com/developerworks/web/library/wa-memleak/?ca=dgr-lnxw97JavascriptLeaks
//     for memory leak patterns and how to prevent them.
//

if (window.isRunAsTest) {
    // Disable postMessage when running in test mode (HtmlUnit).
    window.postMessage = false;
}

// create a new object whose prototype is the given object
function object(o) {
    function F() {}
    F.prototype = o;
    return new F();
}

/**
 * A function that returns false if the page is known to be invisible.
 */
var isPageVisible = (function(){
    // @see https://developer.mozilla.org/en/DOM/Using_the_Page_Visibility_API
    // Set the name of the hidden property and the change event for visibility
    var hidden, visibilityChange;
    if (typeof document.hidden !== "undefined") {
        hidden = "hidden";
        visibilityChange = "visibilitychange";
    } else if (typeof document.mozHidden !== "undefined") {
        hidden = "mozHidden";
        visibilityChange = "mozvisibilitychange";
    } else if (typeof document.msHidden !== "undefined") {
        hidden = "msHidden";
        visibilityChange = "msvisibilitychange";
    } else if (typeof document.webkitHidden !== "undefined") {
        hidden = "webkitHidden";
        visibilityChange = "webkitvisibilitychange";
    }

    // By default, visibility set to true
    var pageIsVisible = true;

    // If the page is hidden, prevent any polling
    // if the page is shown, restore pollings
    function onVisibilityChange() {
        pageIsVisible = !document[hidden];
    }

    // Warn if the browser doesn't support addEventListener or the Page Visibility API
    if (typeof document.addEventListener !== "undefined" && typeof hidden !== "undefined") {
        // Init the value to the real state of the page
        pageIsVisible = !document[hidden];

        // Handle page visibility change
        document.addEventListener(visibilityChange, onVisibilityChange, false);
    }

    return function() {
        return pageIsVisible;
    }
})();

// id generator
var iota = 0;

// crumb information
var crumb = {
    fieldName: null,
    value: null,

    init: function(crumbField, crumbValue) {
        if (crumbField=="") return; // layout.jelly passes in "" whereas it means null.
        this.fieldName = crumbField;
        this.value = crumbValue;
    },

    /**
     * Adds the crumb value into the given hash or array and returns it.
     */
    wrap: function(headers) {
        if (this.fieldName!=null) {
            if (headers instanceof Array)
                // TODO prototype.js only seems to interpret object
                headers.push(this.fieldName, this.value);
            else
                headers[this.fieldName]=this.value;
        }
        // TODO return value unused
        return headers;
    },

    /**
     * Puts a hidden input field to the form so that the form submission will have the crumb value
     */
    appendToForm : function(form) {
        if(this.fieldName==null)    return; // noop
        var div = document.createElement("div");
        div.innerHTML = "<input type=hidden name='"+this.fieldName+"' value='"+this.value+"'>";
        form.appendChild(div);
        if (form.enctype == "multipart/form-data") {
            if (form.action.indexOf("?") != -1) {
                form.action = form.action+"&"+this.fieldName+"="+this.value;
            } else {
                form.action = form.action+"?"+this.fieldName+"="+this.value;
            }
        }
    }
}

// Form check code
//========================================================
var FormChecker = {
    // pending requests
    queue : [],

    // conceptually boolean, but doing so create concurrency problem.
    // that is, during unit tests, the AJAX.send works synchronously, so
    // the onComplete happens before the send method returns. On a real environment,
    // more likely it's the other way around. So setting a boolean flag to true or false
    // won't work.
    inProgress : 0,

    /**
     * Schedules a form field check. Executions are serialized to reduce the bandwidth impact.
     *
     * @param url
     *      Remote doXYZ URL that performs the check. Query string should include the field value.
     * @param method
     *      HTTP method. GET or POST. I haven't confirmed specifics, but some browsers seem to cache GET requests.
     * @param target
     *      HTML element whose innerHTML will be overwritten when the check is completed.
     */
    delayedCheck : function(url, method, target) {
        if(url==null || method==null || target==null)
            return; // don't know whether we should throw an exception or ignore this. some broken plugins have illegal parameters
        this.queue.push({url:url, method:method, target:target});
        this.schedule();
    },

    sendRequest : function(url, params) {
        if (params.method == "post") {
            var idx = url.indexOf('?');
            params.parameters = url.substring(idx + 1);
            url = url.substring(0, idx);
        }
        new Ajax.Request(url, params);
    },

    schedule : function() {
        if (this.inProgress>0)  return;
        if (this.queue.length == 0) return;

        var next = this.queue.shift();
        this.sendRequest(next.url, {
            method : next.method,
            onComplete : function(x) {
                applyErrorMessage(next.target, x);
                FormChecker.inProgress--;
                FormChecker.schedule();
                layoutUpdateCallback.call();
            }
        });
        this.inProgress++;
    }
}

/**
 * Find the sibling (in the sense of the structured form submission) form item of the given name,
 * and returns that DOM node.
 *
 * @param {HTMLElement} e
 * @param {string} name
 *      Name of the control to find. Can include "../../" etc in the prefix.
 *      See @RelativePath.
 *
 *      We assume that the name is normalized and doesn't contain any redundant component.
 *      That is, ".." can only appear as prefix, and "foo/../bar" is not OK (because it can be reduced to "bar")
 */
function findNearBy(e,name) {
    while (name.startsWith("../")) {
        name = name.substring(3);
        e = findFormParent(e,null,true);
    }

    // name="foo/bar/zot"  -> prefixes=["bar","foo"] & name="zot"
    var prefixes = name.split("/");
    name = prefixes.pop();
    prefixes = prefixes.reverse();

    // does 'e' itself match the criteria?
    // as some plugins use the field name as a parameter value, instead of 'value'
    var p = findFormItem(e,name,function(e,filter) {
        return filter(e) ? e : null;
    });
    if (p!=null && prefixes.length==0)    return p;

    var owner = findFormParent(e,null,true);

    function locate(iterator,e) {// keep finding elements until we find the good match
        while (true) {
            e = iterator(e,name);
            if (e==null)    return null;

            // make sure this candidate element 'e' is in the right point in the hierarchy
            var p = e;
            for (var i=0; i<prefixes.length; i++) {
                p = findFormParent(p,null,true);
                if (p.getAttribute("name")!=prefixes[i])
                    return null;
            }
            if (findFormParent(p,null,true)==owner)
                return e;
        }
    }

    return locate(findPreviousFormItem,e) || locate(findNextFormItem,e);
}

function controlValue(e) {
    if (e==null)    return null;
    // compute the form validation value to be sent to the server
    var type = e.getAttribute("type");
    if(type!=null && type.toLowerCase()=="checkbox")
        return e.checked;
    return e.value;
}

function toValue(e) {
    return encodeURIComponent(controlValue(e));
}

/**
 * Builds a query string in a fluent API pattern.
 * @param {HTMLElement} owner
 *      The 'this' control.
 */
function qs(owner) {
    return {
        params : "",

        append : function(s) {
            if (this.params.length==0)  this.params+='?';
            else                        this.params+='&';
            this.params += s;
            return this;
        },

        nearBy : function(name) {
            var e = findNearBy(owner,name);
            if (e==null)    return this;    // skip
            return this.append(Path.tail(name)+'='+toValue(e));
        },

        addThis : function() {
            return this.append("value="+toValue(owner));
        },

        toString : function() {
            return this.params;
        }
    };
}

// find the nearest ancestor node that has the given tag name
function findAncestor(e, tagName) {
    do {
        e = e.parentNode;
    } while (e != null && e.tagName != tagName);
    return e;
}

function findAncestorClass(e, cssClass) {
    do {
        e = e.parentNode;
    } while (e != null && !Element.hasClassName(e,cssClass));
    return e;
}

function findFollowingTR(input, className) {
    // identify the parent TR
    var tr = input;
    while (tr.tagName != "TR")
        tr = tr.parentNode;

    // then next TR that matches the CSS
    do {
        tr = $(tr).next();
    } while (tr != null && (tr.tagName != "TR" || !Element.hasClassName(tr,className)));

    return tr;
}

function find(src,filter,traversalF) {
    while(src!=null) {
        src = traversalF(src);
        if(src!=null && filter(src))
            return src;
    }
    return null;
}

/**
 * Traverses a form in the reverse document order starting from the given element (but excluding it),
 * until the given filter matches, or run out of an element.
 */
function findPrevious(src,filter) {
    return find(src,filter,function (e) {
        var p = e.previousSibling;
        if(p==null) return e.parentNode;
        while(p.lastChild!=null)
            p = p.lastChild;
        return p;
    });
}

function findNext(src,filter) {
    return find(src,filter,function (e) {
        var n = e.nextSibling;
        if(n==null) return e.parentNode;
        while(n.firstChild!=null)
            n = n.firstChild;
        return n;
    });
}

function findFormItem(src,name,directionF) {
    var name2 = "_."+name; // handles <textbox field="..." /> notation silently
    return directionF(src,function(e){ return (e.tagName=="INPUT" || e.tagName=="TEXTAREA" || e.tagName=="SELECT") && (e.name==name || e.name==name2); });
}

/**
 * Traverses a form in the reverse document order and finds an INPUT element that matches the given name.
 */
function findPreviousFormItem(src,name) {
    return findFormItem(src,name,findPrevious);
}

function findNextFormItem(src,name) {
    return findFormItem(src,name,findNext);
}

/**
 * Parse HTML into DOM.
 */
function parseHtml(html) {
    var c = document.createElement("div");
    c.innerHTML = html;
    return c.firstChild;
}

/**
 * Evaluates the script in global context.
 */
function geval(script) {
    // execScript chokes on "" but eval doesn't, so we need to reject it first.
    if (script==null || script=="") return;
    // see http://perfectionkills.com/global-eval-what-are-the-options/
    // note that execScript cannot return value
    (this.execScript || eval)(script);
}

/**
 * Emulate the firing of an event.
 *
 * @param {HTMLElement} element
 *      The element that will fire the event
 * @param {String} event
 *      like 'change', 'blur', etc.
 */
function fireEvent(element,event){
    if (document.createEvent) {
        // dispatch for firefox + others
        var evt = document.createEvent("HTMLEvents");
        evt.initEvent(event, true, true ); // event type,bubbling,cancelable
        return !element.dispatchEvent(evt);
    } else {
        // dispatch for IE
        var evt = document.createEventObject();
        return element.fireEvent('on'+event,evt)
    }
}

// shared tooltip object
var tooltip;

// Behavior rules
//========================================================
// using tag names in CSS selector makes the processing faster
function registerValidator(e) {
    e.targetElement = findFollowingTR(e, "validation-error-area").firstChild.nextSibling;
    e.targetUrl = function() {
        var url = this.getAttribute("checkUrl");
        var depends = this.getAttribute("checkDependsOn");

        if (depends==null) {// legacy behaviour where checkUrl is a JavaScript
            try {
                return eval(url); // need access to 'this', so no 'geval'
            } catch (e) {
                if (window.console!=null)  console.warn("Legacy checkUrl '" + url + "' is not valid Javascript: "+e);
                if (window.YUI!=null)      YUI.log("Legacy checkUrl '" + url + "' is not valid Javascript: "+e,"warn");
                return url; // return plain url as fallback
            }
        } else {
            var q = qs(this).addThis();
            if (depends.length>0)
                depends.split(" ").each(function (n) {
                    q.nearBy(n);
                });
            return url+ q.toString();
        }
    };
    var method = e.getAttribute("checkMethod") || "get";

    var url = e.targetUrl();
    try {
      FormChecker.delayedCheck(url, method, e.targetElement);
    } catch (x) {
        // this happens if the checkUrl refers to a non-existing element.
        // don't let this kill off the entire JavaScript
        YAHOO.log("Failed to register validation method: "+e.getAttribute("checkUrl")+" : "+e);
        return;
    }

    var checker = function() {
        var target = this.targetElement;
        FormChecker.sendRequest(this.targetUrl(), {
            method : method,
            onComplete : function(x) {
                target.innerHTML = x.responseText;
                Behaviour.applySubtree(target);
            }
        });
    }
    var oldOnchange = e.onchange;
    if(typeof oldOnchange=="function") {
        e.onchange = function() { checker.call(this); oldOnchange.call(this); }
    } else
        e.onchange = checker;

    var v = e.getAttribute("checkDependsOn");
    if (v) {
        v.split(" ").each(function (name) {
            var c = findNearBy(e,name);
            if (c==null) {
                if (window.console!=null)  console.warn("Unable to find nearby "+name);
                if (window.YUI!=null)      YUI.log("Unable to find a nearby control of the name "+name,"warn")
                return;
            }
            $(c).observe("change",checker.bind(e));
        });
    }

    e = null; // avoid memory leak
}

function registerRegexpValidator(e,regexp,message) {
    e.targetElement = findFollowingTR(e, "validation-error-area").firstChild.nextSibling;
    var checkMessage = e.getAttribute('checkMessage');
    if (checkMessage) message = checkMessage;
    var oldOnchange = e.onchange;
    e.onchange = function() {
        var set = oldOnchange != null ? oldOnchange.call(this) : false;
        if (this.value.match(regexp)) {
            if (!set) this.targetElement.innerHTML = "";
        } else {
            this.targetElement.innerHTML = "
" + message + "
";
            set = true;
        }
        return set;
    }
    e.onchange.call(e);
    e = null; // avoid memory leak
}

/**
 * Wraps a <button> into YUI button.
 *
 * @param e
 *      button element
 * @param onclick
 *      onclick handler
 * @return
 *      YUI Button widget.
 */
function makeButton(e,onclick) {
    var h = e.onclick;
    var clsName = e.className;
    var n = e.name;
    var btn = new YAHOO.widget.Button(e,{});
    if(onclick!=null)
        btn.addListener("click",onclick);
    if(h!=null)
        btn.addListener("click",h);
    var be = btn.get("element");
    Element.addClassName(be,clsName);
    if(n) // copy the name
        be.setAttribute("name",n);
    return btn;
}

/*
    If we are inside 'to-be-removed' class, some HTML altering behaviors interact badly, because
    the behavior re-executes when the removed master copy gets reinserted later.
 */
function isInsideRemovable(e) {
    return Element.ancestors(e).find(function(f){return f.hasClassName("to-be-removed");});
}

/**
 * Render the template captured by <l:renderOnDemand> at the element 'e' and replace 'e' by the content.
 *
 * @param {HTMLElement} e
 *      The place holder element to be lazy-rendered.
 * @param {boolean} noBehaviour
 *      if specified, skip the application of behaviour rule.
 */
function renderOnDemand(e,callback,noBehaviour) {
    if (!e || !Element.hasClassName(e,"render-on-demand")) return;
    var proxy = eval(e.getAttribute("proxy"));
    proxy.render(function (t) {
        var contextTagName = e.parentNode.tagName;
        var c;
        if (contextTagName=="TBODY") {
            c = document.createElement("DIV");
            c.innerHTML = "

"+t.responseText+"

";
            c = c./*JENKINS-15494*/lastChild.firstChild;
        } else {
            c = document.createElement(contextTagName);
            c.innerHTML = t.responseText;
        }

        var elements = [];
        while (c.firstChild!=null) {
            var n = c.firstChild;
            e.parentNode.insertBefore(n,e);
            if (n.nodeType==1 && !noBehaviour)
                elements.push(n);
        }
        Element.remove(e);

        evalInnerHtmlScripts(t.responseText,function() {
            Behaviour.applySubtree(elements,true);
            if (callback)   callback(t);
        });
    });
}

/**
 * Finds all the script tags
 */
function evalInnerHtmlScripts(text,callback) {
    var q = [];
    var matchAll = new RegExp('

Output:
【漏洞类型】XSS（跨站脚本攻击）
【严重性】High
【漏洞摘要】原始代码中存在一个XSS漏洞。具体表现为在`createSearchBox`函数中，`ac.formatResult`没有被设置，导致用户输入的搜索结果未经转义直接插入到HTML中。这使得攻击者可以通过在搜索框中输入恶意脚本，进而将脚本注入到页面中执行。
【关键代码模式】`createSearchBox`函数中的`ac.formatResult`设置。
【修复方法说明】修复方法通过设置`ac.formatResult = ac.formatEscapedResult`，确保搜索结果中的HTML特殊字符被转义，从而防止XSS攻击。