OO means by which to specifiy all the criteria used to search for a user.

sandbox/src/main/java/org/acegisecurity/providers/dao/ldap/UserSearchBean.java

@@ -0,0 +1,207 @@
+/**
+ * 
+ */
+package net.sf.acegisecurity.providers.dao.ldap;
+
+import javax.naming.NamingEnumeration;
+import javax.naming.NamingException;
+import javax.naming.directory.DirContext;
+import javax.naming.directory.SearchControls;
+import javax.naming.directory.SearchResult;
+
+import org.springframework.beans.factory.InitializingBean;
+
+/**
+ * @author robert.sanders
+ *
+ */
+public class UserSearchBean implements InitializingBean {
+
+    /** Context relative to the rootContext to which the directory is connected. */
+    private String subContext;
+    
+    /** If true then searches the entire subtree as idenified by context, 
+     *  if false (the default) then only search the level identified by the context.
+     */
+    private boolean searchSubtree = false;
+    
+    /** The name and any associate information of the 
+     *  ldap attribute used to match the username. 
+     *  Expected in the form "uid={0}", or "uid={0}@company.com" 
+     *  where {0} is the username that the user attempted to login with.
+     */
+    private String usernameFilter;
+    
+    /** LDAP Search Filter (@see 'RFC 2255').  NOTE: you can 
+     *  use <b>either</b> searchFilter <b>or</b> filters, but <b>not</b> 
+     *  both in a given LdapSearchBean.  
+     */
+    private String searchFilter = "objectClass=*";
+    
+    /** The attribute used when attempting to log the 
+     *  user in to the LDAP server, if not set it defaults 
+     *  to the attribute identified by usernameAttr.  
+     *  For some LDAP systems this may need to be something like "sAMAccountName" (MS ActiveDirectory).
+     */
+    private String loginAttr;
+    
+    /** The time (in milliseconds) which to wait before the search fails; 
+     *  the default is zero, meaning forever.
+     */
+    private int searchTimeLimit = 0;
+    
+    /** Attributes of the User's LDAP Object that contain role name information. */
+    private String[] roleAttributes;
+    
+    /** Internal state - initialized at startup by combining the base searchFilter with the usernameFilter. */
+    private String searchFilterInternal;
+    
+    /** Internal state - initialized at startup based on the values of the JavaBean properties. */
+    private SearchControls searchControls;
+    
+    /** Return the JNDI SearchResult containing the user's information, or null if no SearchResult is found. 
+     * 
+     * @param ctx        The context in which the search will be based (note that subContext property refines this).
+     * @param username   The username to search for.
+     * @return           The JNDI SearchResult containing the user's information, or null if no SearchResult is found.
+     * @throws NamingException  Passes on the Exception if a JNDI Exception occurs.
+     */
+    public UserSearchResults searchForUser(DirContext ctx, String username) throws NamingException {
+        //System.out.println("searchFilterInternal [" + searchFilterInternal + "]");
+        NamingEnumeration enm = ctx.search(subContext, searchFilterInternal, new String[]{username}, searchControls);
+        if (!enm.hasMore()) {
+            return null;    // user not found.
+        }
+        SearchResult searchResult = (SearchResult)enm.next();
+        UserSearchResults userSearchResults = new UserSearchResults(searchResult);
+        
+        String userDN = searchResult.getName();
+        if (searchResult.isRelative()) {
+            userDN = userDN + "," +  subContext + "," + ctx.getNameInNamespace();
+        }
+        userSearchResults.setLdapName( userDN );
+        
+        String loginName;
+        if (null != loginAttr) {
+            loginName = (String)userSearchResults.getAttributes().get(loginAttr).get();
+        } else {
+            loginName = userDN;
+        }
+        userSearchResults.setUserLoginName(loginName);
+        
+        return userSearchResults;
+    }
+
+    public void afterPropertiesSet() throws Exception {
+        searchControls = new SearchControls();
+        if (searchSubtree) {
+            searchControls.setSearchScope( SearchControls.SUBTREE_SCOPE );
+        } else {
+            searchControls.setSearchScope( SearchControls.ONELEVEL_SCOPE );
+        }
+        searchControls.setTimeLimit( searchTimeLimit );
+        
+        String baseFilter = (null != searchFilter) ? searchFilter : "";
+        searchFilterInternal = "(&(" + baseFilter + ")(" + usernameFilter + "))";
+    }
+
+    /**
+     * @return Returns the loginAttr.
+     */
+    public String getLoginAttr() {
+        return loginAttr;
+    }
+
+    /**
+     * @param loginAttr The loginAttr to set.
+     */
+    public void setLoginAttr(String loginAttr) {
+        this.loginAttr = loginAttr;
+    }
+
+    /**
+     * @return Returns the roleAttributes.
+     */
+    public String[] getRoleAttributes() {
+        return roleAttributes;
+    }
+
+    /**
+     * @param roleAttributes The roleAttributes to set.
+     */
+    public void setRoleAttributes(String[] roleAttributes) {
+        this.roleAttributes = roleAttributes;
+    }
+
+    /**
+     * @return Returns the searchFilter.
+     */
+    public String getSearchFilter() {
+        return searchFilter;
+    }
+
+    /**
+     * @param searchFilter The searchFilter to set.
+     */
+    public void setSearchFilter(String searchFilter) {
+        this.searchFilter = searchFilter;
+    }
+
+    /**
+     * @return Returns the searchSubtree.
+     */
+    public boolean isSearchSubtree() {
+        return searchSubtree;
+    }
+
+    /**
+     * @param searchSubtree The searchSubtree to set.
+     */
+    public void setSearchSubtree(boolean searchSubtree) {
+        this.searchSubtree = searchSubtree;
+    }
+
+    /**
+     * @return Returns the searchTimeLimit.
+     */
+    public int getSearchTimeLimit() {
+        return searchTimeLimit;
+    }
+
+    /**
+     * @param searchTimeLimit The searchTimeLimit to set.
+     */
+    public void setSearchTimeLimit(int searchTimeLimit) {
+        this.searchTimeLimit = searchTimeLimit;
+    }
+
+    /**
+     * @return Returns the subContext.
+     */
+    public String getSubContext() {
+        return subContext;
+    }
+
+    /**
+     * @param subContext The subContext to set.
+     */
+    public void setSubContext(String subContext) {
+        this.subContext = subContext;
+    }
+
+    /**
+     * @return Returns the usernameFilter.
+     */
+    public String getUsernameFilter() {
+        return usernameFilter;
+    }
+
+    /**
+     * @param usernameFilter The usernameFilter to set.
+     */
+    public void setUsernameFilter(String usernameFilter) {
+        this.usernameFilter = usernameFilter;
+    }
+    
+    
+}