我正在使用Spring Security ACL实现,并且想知道为现有对象标识授予角色/用户(安全标识 - SID)新权限的最佳方法是什么。
例如,假设我有以下内容(我主要省略主键和其他一些列,只是通过字符串值引用以便于阅读):
ROLE_TEST
test_class
1
test_class
someObjectInstanceId
1
ROLE_TEST
CREATE
(这将是db中的整数)现在,我想为WRITE
类的所有未来和现有对象的角色ROLE_TEST
授予权限test_class
。对于将来创建的对象,我只需检查角色的权限并授予它们。但是现有的物体呢?
Spring是否提供了轻松的功能,或者我必须编写自己的自定义代码来执行以下操作(这不会太糟糕但是如果Spring已经提供了这个,我宁愿不自己做):< / p>
object_id_class
的对象标识。答案 0 :(得分:2)
由于我找不到任何内置的Spring支持,我最终得到了以下自定义代码。不是最有效的,但它做我需要做的事情。
如果有人知道更好的解决方案或有改进以下代码的建议,请告诉我们。
自定义JDBC ACL服务,用于按类型(acl_class)检索所有现有对象标识:
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.security.acls.domain.GrantedAuthoritySid;
import org.springframework.security.acls.domain.ObjectIdentityImpl;
import org.springframework.security.acls.domain.PrincipalSid;
import org.springframework.security.acls.model.ObjectIdentity;
import org.springframework.security.acls.model.Sid;
import javax.sql.DataSource;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class CustomJdbcAclService {
private final JdbcTemplate jdbcTemplate;
private final static String SELECT_EXISTING_BY_CLASS_AND_SID =
"SELECT DISTINCT " +
"acl_object_identity.object_id_identity " +
"FROM acl_object_identity " +
"LEFT JOIN acl_entry on acl_entry.acl_object_identity = acl_object_identity.id " +
"LEFT JOIN acl_class on acl_class.id = acl_object_identity.object_id_class " +
"LEFT JOIN acl_sid on acl_entry.sid = acl_sid.id " +
"WHERE acl_class.class = ? && acl_sid.sid = ? && acl_entry.granting = 1";
public CustomJdbcAclService(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
public List<ObjectIdentity> getExistingObjectIdentities(String type, Sid sid) {
String sidName = getSidName(sid);
List<Map<String, Object>> results = jdbcTemplate.queryForList(SELECT_EXISTING_BY_CLASS_AND_SID, type, sidName);
List<ObjectIdentity> oids = new ArrayList<>();
for (Map<String, Object> result : results) {
oids.add(new ObjectIdentityImpl(type, (Serializable) result.get("object_id_identity")));
}
return oids;
}
private String getSidName(Sid sid) {
String sidName;
if (sid instanceof PrincipalSid) {
sidName = ((PrincipalSid) sid).getPrincipal();
} else if (sid instanceof GrantedAuthoritySid) {
sidName = ((GrantedAuthoritySid) sid).getGrantedAuthority();
} else {
throw new IllegalArgumentException("Unsupported implementation of Sid");
}
return sidName;
}
}
我从另一个ACL服务中调用上述内容:
public class MyAclService {
public void grantPermissionsToExisting(String type, Sid securityIdentity, Permission... permissions) {
List<ObjectIdentity> existingOids = customJdbcAclService.getExistingObjectIdentities(type, securityIdentity);
for (ObjectIdentity oid : existingOids) {
// grantPermissions() gets the ACL of the object identity and inserts the new ACEs
grantPermissions(oid, securityIdentity, permissions);
}
}
}