spring security LdapUserDetailsManager 源码
spring security LdapUserDetailsManager 代码
文件路径：/ldap/src/main/java/org/springframework/security/ldap/userdetails/LdapUserDetailsManager.java
/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.ldap.userdetails;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import javax.naming.Context;
import javax.naming.NameNotFoundException;
import javax.naming.NamingEnumeration;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.DirContext;
import javax.naming.directory.ModificationItem;
import javax.naming.directory.SearchControls;
import javax.naming.ldap.ExtendedRequest;
import javax.naming.ldap.ExtendedResponse;
import javax.naming.ldap.LdapContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.log.LogMessage;
import org.springframework.ldap.core.AttributesMapper;
import org.springframework.ldap.core.AttributesMapperCallbackHandler;
import org.springframework.ldap.core.ContextExecutor;
import org.springframework.ldap.core.ContextSource;
import org.springframework.ldap.core.DirContextAdapter;
import org.springframework.ldap.core.DistinguishedName;
import org.springframework.ldap.core.LdapTemplate;
import org.springframework.ldap.core.SearchExecutor;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.context.SecurityContextHolderStrategy;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.ldap.DefaultLdapUsernameToDnMapper;
import org.springframework.security.ldap.LdapUsernameToDnMapper;
import org.springframework.security.ldap.LdapUtils;
import org.springframework.security.provisioning.UserDetailsManager;
import org.springframework.util.Assert;
/**
* An Ldap implementation of UserDetailsManager.
* <p>
* It is designed around a standard setup where users and groups/roles are stored under
* separate contexts, defined by the "userDnBase" and "groupSearchBase" properties
* respectively.
* <p>
* In this case, LDAP is being used purely to retrieve information and this class can be
* used in place of any other UserDetailsService for authentication. Authentication isn't
* performed directly against the directory, unlike with the LDAP authentication provider
* setup.
*
* @author Luke Taylor
* @author Josh Cummings
* @since 2.0
*/
public class LdapUserDetailsManager implements UserDetailsManager {
private final Log logger = LogFactory.getLog(LdapUserDetailsManager.class);
private SecurityContextHolderStrategy securityContextHolderStrategy = SecurityContextHolder
.getContextHolderStrategy();
/**
* The strategy for mapping usernames to LDAP distinguished names. This will be used
* when building DNs for creating new users etc.
*/
LdapUsernameToDnMapper usernameMapper = new DefaultLdapUsernameToDnMapper("cn=users", "uid");
/** The DN under which groups are stored */
private DistinguishedName groupSearchBase = new DistinguishedName("cn=groups");
/** Password attribute name */
private String passwordAttributeName = "userPassword";
/** The attribute which corresponds to the role name of a group. */
private String groupRoleAttributeName = "cn";
/** The attribute which contains members of a group */
private String groupMemberAttributeName = "uniquemember";
private final String rolePrefix = "ROLE_";
/** The pattern to be used for the user search. {0} is the user's DN */
private String groupSearchFilter = "(uniquemember={0})";
/**
* The strategy used to create a UserDetails object from the LDAP context, username
* and list of authorities. This should be set to match the required UserDetails
* implementation.
*/
private UserDetailsContextMapper userDetailsMapper = new InetOrgPersonContextMapper();
private final LdapTemplate template;
/** Default context mapper used to create a set of roles from a list of attributes */
private AttributesMapper roleMapper = (attributes) -> {
Attribute roleAttr = attributes.get(this.groupRoleAttributeName);
NamingEnumeration<?> ne = roleAttr.getAll();
Object group = ne.next();
String role = group.toString();
return new SimpleGrantedAuthority(this.rolePrefix + role.toUpperCase());
};
private String[] attributesToRetrieve;
private boolean usePasswordModifyExtensionOperation = false;
public LdapUserDetailsManager(ContextSource contextSource) {
this.template = new LdapTemplate(contextSource);
}
@Override
public UserDetails loadUserByUsername(String username) {
DistinguishedName dn = this.usernameMapper.buildDn(username);
List<GrantedAuthority> authorities = getUserAuthorities(dn, username);
this.logger.debug(LogMessage.format("Loading user '%s' with DN '%s'", username, dn));
DirContextAdapter userCtx = loadUserAsContext(dn, username);
return this.userDetailsMapper.mapUserFromContext(userCtx, username, authorities);
}
private DirContextAdapter loadUserAsContext(final DistinguishedName dn, final String username) {
return (DirContextAdapter) this.template.executeReadOnly((ContextExecutor) (ctx) -> {
try {
Attributes attrs = ctx.getAttributes(dn, this.attributesToRetrieve);
return new DirContextAdapter(attrs, LdapUtils.getFullDn(dn, ctx));
}
catch (NameNotFoundException ex) {
throw new UsernameNotFoundException("User " + username + " not found", ex);
}
});
}
/**
* Changes the password for the current user. The username is obtained from the
* security context.
*
* There are two supported strategies for modifying the user's password depending on
* the capabilities of the corresponding LDAP server.
*
* <p>
* Configured one way, this method will modify the user's password via the
* <a target="_blank" href="https://tools.ietf.org/html/rfc3062"> LDAP Password Modify
* Extended Operation </a>.
*
* See {@link LdapUserDetailsManager#setUsePasswordModifyExtensionOperation(boolean)}
* for details.
* </p>
*
* <p>
* By default, though, if the old password is supplied, the update will be made by
* rebinding as the user, thus modifying the password using the user's permissions. If
* <code>oldPassword</code> is null, the update will be attempted using a standard
* read/write context supplied by the context source.
* </p>
* @param oldPassword the old password
* @param newPassword the new value of the password.
*/
@Override
public void changePassword(final String oldPassword, final String newPassword) {
Authentication authentication = this.securityContextHolderStrategy.getContext().getAuthentication();
Assert.notNull(authentication,
"No authentication object found in security context. Can't change current user's password!");
String username = authentication.getName();
this.logger.debug(LogMessage.format("Changing password for user '%s'", username));
DistinguishedName userDn = this.usernameMapper.buildDn(username);
if (this.usePasswordModifyExtensionOperation) {
changePasswordUsingExtensionOperation(userDn, oldPassword, newPassword);
}
else {
changePasswordUsingAttributeModification(userDn, oldPassword, newPassword);
}
}
/**
* @param dn the distinguished name of the entry - may be either relative to the base
* context or a complete DN including the name of the context (either is supported).
* @param username the user whose roles are required.
* @return the granted authorities returned by the group search
*/
@SuppressWarnings("unchecked")
List<GrantedAuthority> getUserAuthorities(final DistinguishedName dn, final String username) {
SearchExecutor se = (ctx) -> {
DistinguishedName fullDn = LdapUtils.getFullDn(dn, ctx);
SearchControls ctrls = new SearchControls();
ctrls.setReturningAttributes(new String[] { this.groupRoleAttributeName });
return ctx.search(this.groupSearchBase, this.groupSearchFilter, new String[] { fullDn.toUrl(), username },
ctrls);
};
AttributesMapperCallbackHandler roleCollector = new AttributesMapperCallbackHandler(this.roleMapper);
this.template.search(se, roleCollector);
return roleCollector.getList();
}
@Override
public void createUser(UserDetails user) {
DirContextAdapter ctx = new DirContextAdapter();
copyToContext(user, ctx);
DistinguishedName dn = this.usernameMapper.buildDn(user.getUsername());
this.logger.debug(LogMessage.format("Creating new user '%s' with DN '%s'", user.getUsername(), dn));
this.template.bind(dn, ctx, null);
// Check for any existing authorities which might be set for this
// DN and remove them
List<GrantedAuthority> authorities = getUserAuthorities(dn, user.getUsername());
if (authorities.size() > 0) {
removeAuthorities(dn, authorities);
}
addAuthorities(dn, user.getAuthorities());
}
@Override
public void updateUser(UserDetails user) {
DistinguishedName dn = this.usernameMapper.buildDn(user.getUsername());
this.logger.debug(LogMessage.format("Updating new user '%s' with DN '%s'", user.getUsername(), dn));
List<GrantedAuthority> authorities = getUserAuthorities(dn, user.getUsername());
DirContextAdapter ctx = loadUserAsContext(dn, user.getUsername());
ctx.setUpdateMode(true);
copyToContext(user, ctx);
// Remove the objectclass attribute from the list of mods (if present).
List<ModificationItem> mods = new LinkedList<>(Arrays.asList(ctx.getModificationItems()));
ListIterator<ModificationItem> modIt = mods.listIterator();
while (modIt.hasNext()) {
ModificationItem mod = modIt.next();
Attribute a = mod.getAttribute();
if ("objectclass".equalsIgnoreCase(a.getID())) {
modIt.remove();
}
}
this.template.modifyAttributes(dn, mods.toArray(new ModificationItem[0]));
// template.rebind(dn, ctx, null);
// Remove the old authorities and replace them with the new one
removeAuthorities(dn, authorities);
addAuthorities(dn, user.getAuthorities());
}
@Override
public void deleteUser(String username) {
DistinguishedName dn = this.usernameMapper.buildDn(username);
removeAuthorities(dn, getUserAuthorities(dn, username));
this.template.unbind(dn);
}
@Override
public boolean userExists(String username) {
DistinguishedName dn = this.usernameMapper.buildDn(username);
try {
Object obj = this.template.lookup(dn);
if (obj instanceof Context) {
LdapUtils.closeContext((Context) obj);
}
return true;
}
catch (org.springframework.ldap.NameNotFoundException ex) {
return false;
}
}
/**
* Creates a DN from a group name.
* @param group the name of the group
* @return the DN of the corresponding group, including the groupSearchBase
*/
protected DistinguishedName buildGroupDn(String group) {
DistinguishedName dn = new DistinguishedName(this.groupSearchBase);
dn.add(this.groupRoleAttributeName, group.toLowerCase());
return dn;
}
protected void copyToContext(UserDetails user, DirContextAdapter ctx) {
this.userDetailsMapper.mapUserToContext(user, ctx);
}
protected void addAuthorities(DistinguishedName userDn, Collection<? extends GrantedAuthority> authorities) {
modifyAuthorities(userDn, authorities, DirContext.ADD_ATTRIBUTE);
}
protected void removeAuthorities(DistinguishedName userDn, Collection<? extends GrantedAuthority> authorities) {
modifyAuthorities(userDn, authorities, DirContext.REMOVE_ATTRIBUTE);
}
private void modifyAuthorities(final DistinguishedName userDn,
final Collection<? extends GrantedAuthority> authorities, final int modType) {
this.template.executeReadWrite((ContextExecutor) (ctx) -> {
for (GrantedAuthority authority : authorities) {
String group = convertAuthorityToGroup(authority);
DistinguishedName fullDn = LdapUtils.getFullDn(userDn, ctx);
ModificationItem addGroup = new ModificationItem(modType,
new BasicAttribute(this.groupMemberAttributeName, fullDn.toUrl()));
ctx.modifyAttributes(buildGroupDn(group), new ModificationItem[] { addGroup });
}
return null;
});
}
private String convertAuthorityToGroup(GrantedAuthority authority) {
String group = authority.getAuthority();
if (group.startsWith(this.rolePrefix)) {
group = group.substring(this.rolePrefix.length());
}
return group;
}
public void setUsernameMapper(LdapUsernameToDnMapper usernameMapper) {
this.usernameMapper = usernameMapper;
}
public void setPasswordAttributeName(String passwordAttributeName) {
this.passwordAttributeName = passwordAttributeName;
}
public void setGroupSearchBase(String groupSearchBase) {
this.groupSearchBase = new DistinguishedName(groupSearchBase);
}
public void setGroupRoleAttributeName(String groupRoleAttributeName) {
this.groupRoleAttributeName = groupRoleAttributeName;
}
public void setAttributesToRetrieve(String[] attributesToRetrieve) {
Assert.notNull(attributesToRetrieve, "attributesToRetrieve cannot be null");
this.attributesToRetrieve = attributesToRetrieve;
}
public void setUserDetailsMapper(UserDetailsContextMapper userDetailsMapper) {
this.userDetailsMapper = userDetailsMapper;
}
/**
* Sets the name of the multi-valued attribute which holds the DNs of users who are
* members of a group.
* <p>
* Usually this will be <tt>uniquemember</tt> (the default value) or <tt>member</tt>.
* </p>
* @param groupMemberAttributeName the name of the attribute used to store group
* members.
*/
public void setGroupMemberAttributeName(String groupMemberAttributeName) {
Assert.hasText(groupMemberAttributeName, "groupMemberAttributeName should have text");
this.groupMemberAttributeName = groupMemberAttributeName;
this.groupSearchFilter = "(" + groupMemberAttributeName + "={0})";
}
public void setRoleMapper(AttributesMapper roleMapper) {
this.roleMapper = roleMapper;
}
/**
* Sets the method by which a user's password gets modified.
*
* If set to {@code true}, then {@link LdapUserDetailsManager#changePassword} will
* modify the user's password by way of the
* <a target="_blank" href="https://tools.ietf.org/html/rfc3062">Password Modify
* Extension Operation</a>.
*
* If set to {@code false}, then {@link LdapUserDetailsManager#changePassword} will
* modify the user's password by directly modifying attributes on the corresponding
* entry.
*
* Before using this setting, ensure that the corresponding LDAP server supports this
* extended operation.
*
* By default, {@code usePasswordModifyExtensionOperation} is false.
* @param usePasswordModifyExtensionOperation
* @since 4.2.9
*/
public void setUsePasswordModifyExtensionOperation(boolean usePasswordModifyExtensionOperation) {
this.usePasswordModifyExtensionOperation = usePasswordModifyExtensionOperation;
}
/**
* Sets the {@link SecurityContextHolderStrategy} to use. The default action is to use
* the {@link SecurityContextHolderStrategy} stored in {@link SecurityContextHolder}.
*
* @since 5.8
*/
public void setSecurityContextHolderStrategy(SecurityContextHolderStrategy securityContextHolderStrategy) {
Assert.notNull(securityContextHolderStrategy, "securityContextHolderStrategy cannot be null");
this.securityContextHolderStrategy = securityContextHolderStrategy;
}
private void changePasswordUsingAttributeModification(DistinguishedName userDn, String oldPassword,
String newPassword) {
ModificationItem[] passwordChange = new ModificationItem[] { new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
new BasicAttribute(this.passwordAttributeName, newPassword)) };
if (oldPassword == null) {
this.template.modifyAttributes(userDn, passwordChange);
return;
}
this.template.executeReadWrite((dirCtx) -> {
LdapContext ctx = (LdapContext) dirCtx;
ctx.removeFromEnvironment("com.sun.jndi.ldap.connect.pool");
ctx.addToEnvironment(Context.SECURITY_PRINCIPAL, LdapUtils.getFullDn(userDn, ctx).toString());
ctx.addToEnvironment(Context.SECURITY_CREDENTIALS, oldPassword);
// TODO: reconnect doesn't appear to actually change the credentials
try {
ctx.reconnect(null);
}
catch (javax.naming.AuthenticationException ex) {
throw new BadCredentialsException("Authentication for password change failed.");
}
ctx.modifyAttributes(userDn, passwordChange);
return null;
});
}
private void changePasswordUsingExtensionOperation(DistinguishedName userDn, String oldPassword,
String newPassword) {
this.template.executeReadWrite((dirCtx) -> {
LdapContext ctx = (LdapContext) dirCtx;
String userIdentity = LdapUtils.getFullDn(userDn, ctx).encode();
PasswordModifyRequest request = new PasswordModifyRequest(userIdentity, oldPassword, newPassword);
try {
return ctx.extendedOperation(request);
}
catch (javax.naming.AuthenticationException ex) {
throw new BadCredentialsException("Authentication for password change failed.");
}
});
}
/**
* An implementation of the
* <a target="_blank" href="https://tools.ietf.org/html/rfc3062"> LDAP Password Modify
* Extended Operation </a> client request.
*
* Can be directed at any LDAP server that supports the Password Modify Extended
* Operation.
*
* @author Josh Cummings
* @since 4.2.9
*/
private static class PasswordModifyRequest implements ExtendedRequest {
private static final byte SEQUENCE_TYPE = 48;
private static final String PASSWORD_MODIFY_OID = "1.3.6.1.4.1.4203.1.11.1";
private static final byte USER_IDENTITY_OCTET_TYPE = -128;
private static final byte OLD_PASSWORD_OCTET_TYPE = -127;
private static final byte NEW_PASSWORD_OCTET_TYPE = -126;
private final ByteArrayOutputStream value = new ByteArrayOutputStream();
PasswordModifyRequest(String userIdentity, String oldPassword, String newPassword) {
ByteArrayOutputStream elements = new ByteArrayOutputStream();
if (userIdentity != null) {
berEncode(USER_IDENTITY_OCTET_TYPE, userIdentity.getBytes(), elements);
}
if (oldPassword != null) {
berEncode(OLD_PASSWORD_OCTET_TYPE, oldPassword.getBytes(), elements);
}
if (newPassword != null) {
berEncode(NEW_PASSWORD_OCTET_TYPE, newPassword.getBytes(), elements);
}
berEncode(SEQUENCE_TYPE, elements.toByteArray(), this.value);
}
@Override
public String getID() {
return PASSWORD_MODIFY_OID;
}
@Override
public byte[] getEncodedValue() {
return this.value.toByteArray();
}
@Override
public ExtendedResponse createExtendedResponse(String id, byte[] berValue, int offset, int length) {
return null;
}
/**
* Only minimal support for <a target="_blank" href=
* "https://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf"> BER
* encoding </a>; just what is necessary for the Password Modify request.
*
*/
private void berEncode(byte type, byte[] src, ByteArrayOutputStream dest) {
int length = src.length;
dest.write(type);
if (length < 128) {
dest.write(length);
}
else if ((length & 0x0000_00FF) == length) {
dest.write((byte) 0x81);
dest.write((byte) (length & 0xFF));
}
else if ((length & 0x0000_FFFF) == length) {
dest.write((byte) 0x82);
dest.write((byte) ((length >> 8) & 0xFF));
dest.write((byte) (length & 0xFF));
}
else if ((length & 0x00FF_FFFF) == length) {
dest.write((byte) 0x83);
dest.write((byte) ((length >> 16) & 0xFF));
dest.write((byte) ((length >> 8) & 0xFF));
dest.write((byte) (length & 0xFF));
}
else {
dest.write((byte) 0x84);
dest.write((byte) ((length >> 24) & 0xFF));
dest.write((byte) ((length >> 16) & 0xFF));
dest.write((byte) ((length >> 8) & 0xFF));
dest.write((byte) (length & 0xFF));
}
try {
dest.write(src);
}
catch (IOException ex) {
throw new IllegalArgumentException("Failed to BER encode provided value of type: " + type);
}
}
}
}
相关信息
相关文章
spring security DefaultLdapAuthoritiesPopulator 源码
spring security InetOrgPerson 源码
spring security InetOrgPersonContextMapper 源码
spring security LdapAuthoritiesPopulator 源码
spring security LdapAuthority 源码
spring security LdapUserDetails 源码
spring security LdapUserDetailsImpl 源码
spring security LdapUserDetailsMapper 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
8、 openharmony