Php implements simple ACL.

Finally, I have finished a simple implementation. For more information about php learning, see. Copy codeThe code is as follows:
-- ACL Tables
-- Table structure '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;
-- Table structure 'aclroles'
Drop table if exists 'aclroes ';
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;
-- Table structure '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;
-- Table structure '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;
-- Table structure '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
Copy codeThe code is as follows:
/**
* Simple ACL permission control
*
* 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)
*
* Dependent db. php sqlobject. php
*
* @ Author vb2005xu.iteye.com
*/
Class AclBase {
// --- ACL access authorization

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

/**
* Allow access by anyone
*/
Const EVERYONE = 1;

/**
* Allow access by users with roles
*/
Const HAS_ROLE = 2;

/**
* Allow access by a user without a role
*/
Const NO_ROLE = 3;
/**
* A resource-role associated with a defined role can be accessed.
*/
Const ALLOCATE_ROLES = 4;

// Define the relevant table name
Public $ tbResources = 'aclresources ';
Public $ tbRoles = 'aclroles ';
Public $ tbRefResourcesRoles = 'ref _ aclresources_aclroles ';
Public $ tbRefUsersRoles = 'ref _ users_aclroles ';

/**
* Format the resource access permission 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 );
}

/**
* Modify the resource and return the successful status.
*
* @ 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 ');
}

/**
* Deleting a 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 successful 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 a 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 a role for the resource. each time, all relevant records in the table are removed before being inserted.
*
* @ Param int $ rsid
* @ Param mixed $ roleIds
* @ Param boolean $ setNull whether to clear resources from the associated table if the role id does not exist
*/
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 ($ defaaccess access! =-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 the role. each time, all relevant records in the table are removed before being inserted.
*
* @ 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;
}

/**
* Assign a role to the user. each time, all relevant records in the table are removed before being inserted.
*
* In this case, many users may have performance problems... 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 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 a 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 codeThe code is as follows:
/**
* Perform acl verification on resources
*
* @ Param string $ rsid resource ID
* @ Param array $ user specific user. If this parameter is not specified, the current user is verified.
*
* @ Return boolean
*/
Function aclVerity ($ rsid, array $ user = null ){

If (empty ($ rsid) return false;
If (! CoreApp: $ defaacl ACL ){
CoreApp: $ defaacl ACL = new AclFlat ();
}

$ RsRow = aclGetResource ($ rsid );

// No default resource access policy defined
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;

// No one is allowed to access
If (AclBase: NOBODY = $ rsRow ['access']) return false;

// Obtain user information
If (empty ($ user) $ user = isset ($ _ SESSION ['si-sysuser'])? $ _ SESSION ['si-sysuser']: null;

// If the user is not logged on, the user is deemed to have no access permission.
If (empty ($ user) return false;

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

$ UserHasRoles =! Empty ($ user ['roles ']);

/**
* Allow access by a user without a role
*/
If (AclBase: NO_ROLE = $ rsRow ['access']) return $ userHasRoles? False: true;

/**
* Allow access by users with roles
*/
If (AclBase: HAS_ROLE = $ rsRow ['access']) return $ userHasRoles? True: false;

// --- Perform resource verification for the user <-> role
If ($ userHasRoles ){
Foreach ($ user ['roles '] as $ role_id ){
If (aclGetRefResourcesRoles ($ rsid, $ role_id ))
Return true;
}
Dump ($ user );
}
Return false;
}

Copy codeThe code is as follows:
/**
* Perform acl verification on resources
*
* @ Param string $ rsid resource ID
* @ Param array $ user specific user. If this parameter is not specified, the current user is verified.
*
* @ Return boolean
*/
Function aclVerity ($ rsid, array $ user = null ){

If (empty ($ rsid) return false;
If (! CoreApp: $ defaacl ACL ){
CoreApp: $ defaacl ACL = new AclFlat ();
}

$ RsRow = aclGetResource ($ rsid );

// No default resource access policy defined
If (! $ RsRow) return false;

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

/*
* The verification procedure is as follows:
*
* 1. verify the access attribute of the resource.
* EVERYONE => true, NOBODY => false * verify other attributes below
* 2. obtain the role id set from the session (or user session table ).
* 3. if a user has a role, HAS_ROLE => true, NO_ROLE => false; and vice versa.
* 4. if resource access = ALLOCATE_ROLES
* 1. obtain the role id set corresponding to the resource from the cache (or $ tbRefResourcesRoles)
* 2. intersection the user's role id set with 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;

// No one is allowed to access
If (AclBase: NOBODY = $ rsRow ['access']) return false;

// Obtain user information
If (empty ($ user) $ user = isset ($ _ SESSION ['si-sysuser'])? $ _ SESSION ['si-sysuser']: null;

// If the user is not logged on, the user is deemed to have no access permission.
If (empty ($ user) return false;

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

$ UserHasRoles =! Empty ($ user ['roles ']);

/**
* Allow access by a user without a role
*/
If (AclBase: NO_ROLE = $ rsRow ['access']) return $ userHasRoles? False: true;

/**
* Allow access by users with roles
*/
If (AclBase: HAS_ROLE = $ rsRow ['access']) return $ userHasRoles? True: false;

// --- Perform resource verification for the user <-> role
If ($ userHasRoles ){
Foreach ($ user ['roles '] as $ role_id ){
If (aclGetRefResourcesRoles ($ rsid, $ role_id ))
Return true;
}
Dump ($ user );
}
Return false;
}
/**
* Regenerate the role resource access control table
*
* @ 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 ::$ defaacl ACL-> tbResources );
// Convert it into a hash table structure
If ($ rst ){
$ Rst = array_to_hashmap ($ rst, 'rsid ');
}
Break;
Case CoreApp: $ defaultAcl-> tbRoles:
$ CacheId = 'acl-roles ';
$ Rst = SingleTableCRUD: findAll (CoreApp ::$ defaacl ACL-> tbRoles );
// Convert it into a 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 ::$ defaacl ACL-> 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 table 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];
}
/**
* Retrieve resource records
*
* @ Param string $ rsid
*
* @ Return array
*/
Function aclGetResource ($ rsid ){
Static $ rst = null;
If (! $ Rst ){
$ Rst = aclGetACT (CoreApp: $ defaacl ACL-> tbResources );
If (! $ Rst) $ rst = array ();
}
Return isset ($ rst [$ rsid])? $ Rst [$ rsid]: null;
}
/**
* Get role Records
*
* @ Param int $ role_id
*
* @ Return array
*/
Function aclGetRole ($ role_id ){
Static $ rst = null;
If (! $ Rst ){
$ Rst = aclGetACT (CoreApp: $ defaacl ACL-> tbRoles );
If (! $ Rst) $ rst = array ();
}
Return isset ($ rst [$ role_id])? $ Rst [$ role_id]: null;
}
/**
* Obtains the user role Association record. this method can be used to check whether resources 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: $ defaacl ACL-> 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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