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Package rbac
Short Description This package contains a basic implementation of Role Base Access Control
License Private
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Informations about the package rbac
Description
This package contains a basic implementation of a role-based access control (RBAC) mechanism.
Please note that role-based access control (RBAC) differs from an access control list (ACL).
In general terms:
- An access control list (ACL) specifies which users are granted access to resources, as well as what operations are allowed on given resources. For instance, if a resource has an ACL that contains (Alice: read,write; Bob: read), this would give Alice permission to read and write the file and Bob to only read it.
- Role-based access control (RBAC) is an approach to restricting system access to authorized users. In role based access control, the role hierarchy defines an inheritance relationship among roles. Higher-level roles subsume permissions owned by sub-roles.
Please note that, because Higher-level roles subsume permissions owned by sub-roles, role-based access control is unsuitable to manage individuals' ownerships over resources.
Installation
Form the command line:
composer require dbeurive/rbacOr, from within your file composer.json:
"require": {
"dbeurive/rbac": "*"
}Synopsis
Please note that you can also specify the hierarchy through an array:
NOTE: the key
accessALWAYS points to an array of arrays.
Below, the graphical representation of the tree.
API overview
construct($inHierarchyOrTopRole)
Construct a new hierarchy of roles.
The argument $inHierarchyOrTopRole may be a string or an array.
- If
$inHierarchyOrTopRoleis a string: it represents the name of the role a the top of the hierarchy. - If
$inHierarchyOrTopRoleis an array: it represents the entire hierarchy.
addSubRole($inRole)
Add a role to the level below the current level. The current level becomes the newly added sub level.
up()
Go back one level up from the current role.
canAccessResource($inRole, $inOtherRole)
Test if a given role ($inRole) can access resources managed by another role ($inOtherRole).
If the role $inRole can access the resources managed by the other role ($inOtherRole), then the method
returns the value true. Otherwise it returns the value false.
cmp($inRole, $inOtherRole)
Compare the positions of two roles within the hierarchy.
- if
$inRoleis "above"$inOtherRole, then the method returns the value +1. - If
$inRoleand$inOtherRoleare identical, then the method returns the value 0. - if
$inOtherRoleis "below"$inRole, then the method returns the value -1.
toDot()
Generate the GraphViz representation of the hierarchy of roles.
The method returns a string that represents the DOT representation of the tree.
Assuming that you store this string in the file tree.dot, then you can get the graphical
representation of the tree with the following command:
dot -Tgif -Ograph tree.dot