php如何实现ACL

-- ACL Tables
-- 表的结构 `aclresources`
DROP TABLE IF EXISTS `aclresources`;
CREATE TABLE IF NOT EXISTS `aclresources` (
`rsid` varchar(64) NOT NULL ,
`access` int(4) NOT NULL default 0,
`desc` varchar(240) NOT NULL default '',
`created_at` int(10) unsigned NOT NULL default 1,
`updated_at` int(10) unsigned NOT NULL default 0,
PRIMARY KEY (`rsid`)
)DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
-- 表的结构 `aclroles`
DROP TABLE IF EXISTS `aclroles`;
CREATE TABLE IF NOT EXISTS `aclroles` (
`id` int(10) unsigned NOT NULL auto_increment,
`rolename` varchar(32) NOT NULL ,
`desc` varchar(240) NOT NULL default '',
`created_at` int(10) unsigned NOT NULL default 1,
`updated_at` int(10) unsigned NOT NULL default 0,
PRIMARY KEY (`id`),
UNIQUE KEY `rolename` (`rolename`)
)DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
-- 表的结构 `ref_aclresources_aclroles`
DROP TABLE IF EXISTS `ref_aclresources_aclroles`;
CREATE TABLE IF NOT EXISTS `ref_aclresources_aclroles` (
`rsid` varchar(64) NOT NULL ,
`role_id` int(10) unsigned NOT NULL ,
PRIMARY KEY (`rsid`,`role_id`)
)DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
-- 表的结构 `ref_users_aclroles`
DROP TABLE IF EXISTS `ref_users_aclroles`;
CREATE TABLE IF NOT EXISTS `ref_users_aclroles` (
`user_id` int(10) unsigned NOT NULL auto_increment,
`role_id` int(10) unsigned NOT NULL ,
PRIMARY KEY (`user_id`,`role_id`)
)DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
-- 表的结构 `users`
DROP TABLE IF EXISTS `users`;
CREATE TABLE `users` (
`id` int(10) unsigned NOT NULL auto_increment,
`email` varchar(128) NOT NULL,
`password` varchar(64) NOT NULL,
`nickname` varchar(32) NOT NULL default '',
`roles` varchar(240) NOT NULL default '',
`created_at` int(10) unsigned NOT NULL default 1,
`updated_at` int(10) unsigned NOT NULL default 0,
PRIMARY KEY (`id`),
UNIQUE KEY `user_email` (`email`)
)DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

<?php

class Aclbase {
// --- ACL 访问授权


const NOBODY = 0;


const EVERYONE = 1;


const HAS_ROLE = 2;


const NO_ROLE = 3;

const ALLOCATE_ROLES = 4;

// 定义相关的 表名
public $tbResources = 'aclresources';
public $tbRoles = 'aclroles';
public $tbRefResourcesRoles = 'ref_aclresources_aclroles';
public $tbRefUsersRoles = 'ref_users_aclroles';


static function formatAccessValue($access){
static $arr = array(self::NOBODY,self::EVERYONE,self::HAS_ROLE,self::NO_ROLE,self::ALLOCATE_ROLES);
return in_array($access,$arr) ? $access : self::NOBODY;
}


function createResource($rsid,$access,$desc){
if (empty($rsid)) return false;

$resource = array(
'rsid' => $rsid,
'access' => self::formatAccessValue($access),
'desc' => $desc,
'created_at' => CURRENT_TIMESTAMP
);

return SingleTableCRUD::insert($this->tbResources,$resource);
}


function updateResource(array $resource){
if (!isset($resource['rsid'])) return false;

$resource['updated_at'] = CURRENT_TIMESTAMP;

return SingleTableCRUD::update($this->tbResources,$resource,'rsid');
}


function deleteResource($rsid){
if (empty($rsid)) return false;
return SingleTableCRUD::delete($this->tbResources,array('rsid'=>$rsid));
}


function createRole($rolename,$desc){
if (empty($rolename)) return false;

$role = array(
'rolename' => $rolename,
'desc' => $desc,
'created_at' => CURRENT_TIMESTAMP
);

return SingleTableCRUD::insert($this->tbRoles,$role);
}


function updateRole(array $role){
if (!isset($role['id'])) return false;

if (isset($role['rolename'])) unset($role['rolename']);
$role['updated_at'] = CURRENT_TIMESTAMP;

return SingleTableCRUD::update($this->tbRoles,$role,'id');
}


function deleteRole($role_id){
if (empty($role_id)) return false;
return SingleTableCRUD::delete($this->tbRoles,array('role_id'=>(int) $role_id));
}


function allocateRolesForResource($rsid,$roleIds,$setNull=false,$defaultAccess=-1){
if (empty($rsid)) return false;

$roleIds = normalize($roleIds,',');
if (empty($roleIds)){
if ($setNull){
SingleTableCRUD::delete($this->tbRefResourcesRoles,array('rsid'=>$rsid));

if ($defaultAccess != -1){
$defaultAccess = self::formatAccessValue($defaultAccess);
$this->updateResource(array('rsid'=>$rsid,'access'=>$defaultAccess));
}
return true;
}
return false;
}

SingleTableCRUD::delete($this->tbRefResourcesRoles,array('rsid'=>$rsid));

$roleIds = array_unique($roleIds);

foreach ($roleIds as $role_id){
SingleTableCRUD::insert($this->tbRefResourcesRoles,array('rsid'=>$rsid,'role_id'=>(int)$role_id));
}
return true;
}

function cleanRolesForResource($rsid){
if (empty($rsid)) return false;
return SingleTableCRUD::delete($this->tbRefResourcesRoles,array('rsid'=>$rsid));
}

function cleanResourcesForRole($role_id){
if (empty($role_id)) return false;
return SingleTableCRUD::delete($this->tbRefResourcesRoles,array('role_id'=>(int) $role_id));
}


function allocateResourcesForRole($role_id,$rsids){
if (empty($role_id)) return false;

$role_id = (int) $role_id;
$rsids = normalize($rsids,',');
if (empty($rsids)){
return false;
}

SingleTableCRUD::delete($this->tbRefResourcesRoles,array('role_id'=>$role_id));

$rsids = array_unique($rsids);

foreach ($rsids as $rsid){
SingleTableCRUD::insert($this->tbRefResourcesRoles,array('rsid'=>$rsid,'role_id'=>$role_id));
}
return true;
}


function allocateRolesForUser($user_id,$roleIds){
if (empty($user_id)) return false;

$user_id = (int) $user_id;
$roleIds = normalize($roleIds,',');
if (empty($roleIds)){
return false;
}

SingleTableCRUD::delete($this->tbRefUsersRoles,array('user_id'=>$user_id));

$roleIds = array_unique($roleIds);

foreach ($roleIds as $roleId){
SingleTableCRUD::insert($this->tbRefUsersRoles,array('user_id'=>$user_id,'role_id'=>$role_id));
}
return true;
}


function cleanRolesForUser($user_id){
if (empty($user_id)) return false;
return SingleTableCRUD::delete($this->tbRefUsersRoles,array('user_id'=>(int) $user_id));
}


function cleanUsersForRole($role_id){
if (empty($role_id)) return false;
return SingleTableCRUD::delete($this->tbRefUsersRoles,array('role_id'=>(int) $role_id));
}

}

function aclVerity($rsid ,array $user = null){

if (empty($rsid)) return false;
if (!CoreApp::$defaultAcl) {
CoreApp::$defaultAcl = new AclFlat();
}

$rsRow = aclGetResource($rsid);

// 未定义资源的缺省访问策略
if (!$rsRow) return false;

CoreApp::writeLog($rsRow,'test');

$rsRow['access'] = Aclbase::formatAccessValue($rsRow['access']);

// 允许任何人访问
if (Aclbase::EVERYONE == $rsRow['access']) return true;

// 不允许任何人访问
if (Aclbase::NOBODY == $rsRow['access']) return false;

// 获取用户信息
if (empty($user)) $user = isset($_SESSION['SI-SysUser']) ? $_SESSION['SI-SysUser'] : null;

// 用户未登录,则当成无访问权限
if (empty($user)) return false;

$user['roles'] = empty($user['roles']) ? null : normalize($user['roles'],';');

$userHasRoles = !empty($user['roles']);


if (Aclbase::NO_ROLE == $rsRow['access']) return $userHasRoles ? false : true;


if (Aclbase::HAS_ROLE == $rsRow['access']) return $userHasRoles ? true : false;

// --- 对用户进行 资源 <-> 角色 校验
if ($userHasRoles){
foreach ($user['roles'] as $role_id){
if ( aclGetRefResourcesRoles($rsid,$role_id) )
return true;
}
dump($user);
}
return false;
}

function aclVerity($rsid ,array $user = null){

if (empty($rsid)) return false;
if (!CoreApp::$defaultAcl) {
CoreApp::$defaultAcl = new AclFlat();
}

$rsRow = aclGetResource($rsid);

// 未定义资源的缺省访问策略
if (!$rsRow) return false;

CoreApp::writeLog($rsRow,'test');



$rsRow['access'] = Aclbase::formatAccessValue($rsRow['access']);

// 允许任何人访问
if (Aclbase::EVERYONE == $rsRow['access']) return true;

// 不允许任何人访问
if (Aclbase::NOBODY == $rsRow['access']) return false;

// 获取用户信息
if (empty($user)) $user = isset($_SESSION['SI-SysUser']) ? $_SESSION['SI-SysUser'] : null;

// 用户未登录,则当成无访问权限
if (empty($user)) return false;

$user['roles'] = empty($user['roles']) ? null : normalize($user['roles'],';');

$userHasRoles = !empty($user['roles']);


if (Aclbase::NO_ROLE == $rsRow['access']) return $userHasRoles ? false : true;


if (Aclbase::HAS_ROLE == $rsRow['access']) return $userHasRoles ? true : false;

// --- 对用户进行 资源 <-> 角色 校验
if ($userHasRoles){
foreach ($user['roles'] as $role_id){
if ( aclGetRefResourcesRoles($rsid,$role_id) )
return true;
}
dump($user);
}
return false;
}

function aclRebuildACT($actTable ,$return = false){
if (empty($actTable)) return false;

global $globalConf;
$rst = null;
$cacheId = null;

switch($actTable){
case CoreApp::$defaultAcl->tbResources:
$cacheId = 'acl-resources';
$rst = SingleTableCRUD::findAll(CoreApp::$defaultAcl->tbResources);
// 转成 哈希表结构
if ($rst){
$rst = array_to_hashmap($rst,'rsid');
}
break;
case CoreApp::$defaultAcl->tbRoles:
$cacheId = 'acl-roles';
$rst = SingleTableCRUD::findAll(CoreApp::$defaultAcl->tbRoles);
// 转成 哈希表结构
if ($rst){
$rst = array_to_hashmap($rst,'id');
}
break;
case CoreApp::$defaultAcl->tbRefResourcesRoles:
$cacheId = 'acl-roles_has_resources';
$rst = SingleTableCRUD::findAll(CoreApp::$defaultAcl->tbRefResourcesRoles);
if ($rst){
$_ = array();
foreach ($rst as $row) {
$ref_id = "{$row['rsid']}<-|->{$row['role_id']}";
$_[$ref_id] = $row;
}
unset($rst);
$rst = $_;
}
break;
}

if ($cacheId)
writeCache($globalConf['runtime']['cacheDir'] ,$cacheId ,$rst ,true);

if ($return) return $rst;
}

function aclGetACT($actTable){
if (empty($actTable)) return false;

static $rst = array();

$cacheId = null;

switch($actTable){
case CoreApp::$defaultAcl->tbResources:
$cacheId = 'acl-resources';
break;
case CoreApp::$defaultAcl->tbRoles:
$cacheId = 'acl-roles';
break;
case CoreApp::$defaultAcl->tbRefResourcesRoles:
$cacheId = 'acl-roles_has_resources';
break;

}

if (!$cacheId) return null;

if (isset($rst[$cacheId])) return $rst[$cacheId];

global $globalConf;
// 900
$rst[$cacheId] = getCache($globalConf['runtime']['cacheDir'],$cacheId,0);
if ( !$rst[$cacheId] ){
$rst[$cacheId] = aclRebuildACT($actTable,true);
}

return $rst[$cacheId];
}

function aclGetResource($rsid){
static $rst = null;
if (!$rst){
$rst = aclGetACT(CoreApp::$defaultAcl->tbResources);
if (!$rst) $rst = array();
}
return isset($rst[$rsid]) ? $rst[$rsid] : null;
}

function aclGetRole($role_id){
static $rst = null;
if (!$rst){
$rst = aclGetACT(CoreApp::$defaultAcl->tbRoles);
if (!$rst) $rst = array();
}
return isset($rst[$role_id]) ? $rst[$role_id] : null;
}

function aclGetRefResourcesRoles($rsid,$role_id){
static $rst = null;
if (!$rst){
$rst = aclGetACT(CoreApp::$defaultAcl->tbRefResourcesRoles);
if (!$rst) $rst = array();
}
$ref_id = "{$rsid}<-|->{$role_id}";
CoreApp::writeLog(isset($rst[$ref_id])?$rst[$ref_id]:'nodata',$ref_id);
return isset($rst[$ref_id]) ? $rst[$ref_id] : null;
}