Implement simple ACL in php

代码如下: 
-- 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 类 
 代码如下: 
/**
* Simple ACL permission control function
*
* Table definition
*
* 1. Resource definition (rsid, access, desc, created_at, updated_at)
* 2. Role definition (id, rolename, desc, created_at, updated_at)
* 3. Resource-role association (rsid, role_id)
* 4. User-role association (user_id, role_id)
*
* Depends on db.php sqlobject.php
*
* @author vb2005xu.iteye.com
*/ 
class AclBase { 
// --- ACL 访问授权 

/**
* No one is allowed to access
*/ 
const NOBODY = 0; 

/**
* Allow anyone to access
*/ 
const EVERYONE = 1; 

/**
* Allow users with roles to access
*/ 
const HAS_ROLE = 2; 

/**
* Allow users without roles to access
*/ 
const NO_ROLE = 3; 
/**
* Only roles defined in the resource-role association can access
*/ 
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'; 

/**
* Format resource access rights and return
*
* @return int
*/ 
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; 
} 

/**
* Create a resource and return the primary key of the resource record
*
* @param string $rsid
* @param int $access
* @param string $desc
*
* @return int
*/ 
function createResource($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); 
} 

/** 
* 修改资源,返回成功状态 
* 
* @param array $resource 
* @return int 
*/ 
function updateResource(array $resource){ 
if (!isset($resource['rsid'])) return false; 

$resource['updated_at'] = CURRENT_TIMESTAMP; 

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

/**
* Delete resource
*
* @param string $rsid
* @return int
*/ 
function deleteResource($rsid){ 
if (empty($rsid)) return false; 
return SingleTableCRUD::delete($this->tbResources,array('rsid'=>$rsid)); 
} 

/**
* Create a role and return the primary key of the role record
*
* @param string $rolename
* @param string $desc
*
* @return int
*/ 
function createRole($rolename,$desc){ 
if (empty($rolename)) return false; 

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

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

/**
* Modify the role and return the success status
*
* @param array $role
* @return int
*/ 
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'); 
} 

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

/**
* Specify roles for resources, and remove all relevant records in the table each time before inserting
*
* @param int $rsid
* @param mixed $roleIds
* @param boolean $setNull When the role id does not exist, Whether to clear resources from the association table
*/ 
function allocateRolesForResource($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)); 
} 

/**
* Allocate resources to roles, remove all relevant records in the table each time and then insert them
*
* @param int $role_id
* @param mixed $rsids
*
* @return boolean
*/ 
function allocateResourcesForRole($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; 
} 

/** 
* 为用户指派角色,每次均先全部移除表中相关记录再插入 
* 
* There may be performance issues here when there are many users... We will think about how to optimize it later
*
* @param int $user_id
* @param mixed $roleIds
*
* @return boolean
*/
function allocateRolesForUser ($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 ;
}

/**
* Clear user’s role information
*
* @param int $user_id
*
* @return boolean
*/
function cleanRolesForUser($user_id){
if (empty($user_id)) return false;
return SingleTableCRUD::delete($this->tbRefUsersRoles,array(' user_id'=>(int) $user_id));
}

/**
* Clear the user association of the role
*
* @param int $role_id
*
* @return boolean
*/
function cleanUsersForRole($role_id){
if (empty($role_id)) return false;
return SingleTableCRUD:: delete($this->tbRefUsersRoles,array('role_id'=>(int) $role_id));
}

}

The specific detection code is as follows:
Copy code The code is as follows:
/**
* Perform acl verification on resources
*
* @param string $rsid resource identifier
* @param array $user specific user, if not specified, verify the current user
*
* @return boolean
*/
function aclVerity($rsid ,array $user = null){

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

$rsRow = aclGetResource($rsid);

// Default access policy for undefined resources
if (!$rsRow) return false;

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

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

// Allow anyone to access
if (AclBase::EVERYONE == $rsRow['access' ]) return true;

// Do not allow anyone to access
if (AclBase::NOBODY == $rsRow['access']) return false;

// Get user information
if (empty($user)) $user = isset($_SESSION['SI-SysUser']) ? $_SESSION['SI-SysUser'] : null;

// If the user is not logged in, it is regarded as having no access rights
if (empty($user)) return false;

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

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

/**
* Allow users without roles to access
*/
if (AclBase::NO_ROLE == $rsRow['access']) return $userHasRoles ? false : true;

/**
* Allow users with roles to access
*/
if (AclBase::HAS_ROLE == $rsRow['access']) return $userHasRoles ? true : false;

// --- Resource<-> role verification for users
if ( $userHasRoles){
foreach ($user['roles'] as $role_id){
if ( aclGetRefResourcesRoles($rsid,$role_id) )
return true;
}
dump($user);
}
return false;
}

Copy code The code is as follows:
/**
* Perform acl verification on resources
*
* @param string $rsid resource identifier
* @param array $user specific user, if not specified, verify the current user
*
* @return boolean
*/
function aclVerity($rsid ,array $user = null){

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

$rsRow = aclGetResource($rsid);

// Default access policy for undefined resources
if (!$rsRow) return false;

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

/*
* The verification steps are as follows:
*
* 1. First verify the access attribute of the resource itself
* EVERYONE => true, NOBODY => false * Other attributes will continue to be verified below
* 2. Get the role id set from the session (or user session table)
* 3. If the user has a role, HAS_ROLE => true , NO_ROLE => false; vice versa
* 4. If resource access == ALLOCATE_ROLES
* 1. Get the role id set corresponding to the resource from the cache (or $tbRefResourcesRoles)
* 2. Find the intersection between the role id set owned by the user and the role id set corresponding to the resource
* 3. Intersection exists => true; otherwise => false
*/

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

// Allow anyone to access
if (AclBase::EVERYONE == $rsRow ['access']) return true;

//Do not allow anyone to access
if (AclBase::NOBODY == $rsRow['access']) return false;

// Get user information
if (empty( $user)) $user = isset($_SESSION['SI-SysUser']) ? $_SESSION['SI-SysUser'] : null;

// If the user is not logged in, it is regarded as having no access rights
if (empty( $user)) return false;

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

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

/**
* Allow users without roles to access
*/
if (AclBase::NO_ROLE == $rsRow['access']) return $userHasRoles ? false : true;

/ **
* Allow users with roles to access
*/
if (AclBase::HAS_ROLE == $rsRow['access']) return $userHasRoles ? true : false;

// --- Perform resource calibration for users<-> Role calibration Check
if ($userHasRoles){
foreach ($user['roles'] as $role_id){
if ( aclGetRefResourcesRoles($rsid,$role_id) )
return true;
}
dump($user);
}
return false;
}
/**
* Regenerate role resource access control list
*
* @param string $actTable ACL table name
* @param boolean $return Whether to return the regenerated list
*
* @return mixed
*/
function aclRebuildACT($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:: $defaultAcl->tbResources);
//Convert to hash table structure
if ($rst){
$rst = array_to_hashmap($rst,'rsid');
}
break;
case CoreApp::$defaultAcl ->tbRoles:
$cacheId = 'acl-roles';
$rst = SingleTableCRUD::findAll(CoreApp::$defaultAcl->tbRoles);
// Convert to hash table structure
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;
}
/ **
* Get role resource access control list data
*
* @param string $actTable ACL table name
*
* @return mixed
*/
function aclGetACT($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];
}
/**
* Get resource record
*
* @param string $rsid
*
* @return array
*/
function aclGetResource($rsid){
static $rst = null;
if (!$rst){
$rst = aclGetACT(CoreApp::$defaultAcl->tbResources); 
if (!$rst) $rst = array(); 
} 
return isset($rst[$rsid]) ? $rst[$rsid] : null; 
} 
/**
* Get role record
*
* @param int $role_id
*
* @return array
*/ 
function aclGetRole($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; 
} 
/**
* Get the user role association record. This method can verify whether the resource can be called by this role
*
* @param string $rsid
* @param int $role_id
*
* @return array
*/ 
function aclGetRefResourcesRoles($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; 
} 

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