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111 lines
4 KiB
Common Lisp
111 lines
4 KiB
Common Lisp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;; CLOG - The Common Lisp Omnificent GUI ;;;;
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;;;; (c) 2020-2022 David Botton ;;;;
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;;;; License BSD 3 Clause ;;;;
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;;;; ;;;;
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;;;; clog-auth.lisp ;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; CLOG-Auth an authorization abstraction for CLOG
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(mgl-pax:define-package :clog-auth
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(:documentation "CLOG-AUTH an authenticationa and authorization abstraction
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for CLOG")
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(:use #:cl #:clog #:mgl-pax))
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(cl:in-package :clog-auth)
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(defsection @clog-auth (:title "CLOG Auth Objects")
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"CLOG-AUTH - Authentication"
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(get-authentication-token function)
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(store-authentication-token function)
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(remove-authentication-token function)
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(set-on-authentication-change function)
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"CLOG-AUTH - Authorization"
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(add-authorization function)
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(is-authorized-p function))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Implementation - clog-auth - Authenitcation
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defparameter *clog-auth-key* "clog-auth-token"
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"Key used for local storage of authentication token")
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(defparameter *authorization-hash* (make-hash-table* :test #'equalp)
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"Hash table of roles to actions")
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; get-authentication-token ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun get-authentication-token (body &key auth-path)
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"Retrieve the stored authentication token"
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(check-type body clog-body)
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(let ((token (storage-element (window body) :local *clog-auth-key*)))
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(when (equalp token "null")
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(setf token nil))
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(unless token
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(when auth-path
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(url-assign (location body) auth-path)))
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token))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; store-authentication-token ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun store-authentication-token (body token)
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(check-type body clog-body)
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(setf (storage-element (window body) :local *clog-auth-key*) token))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; remove-authentication-token ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun remove-authentication-token (body)
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(check-type body clog-body)
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(storage-remove (window body) :local *clog-auth-key*))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; set-on-authentication-change ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun set-on-authentication-change (body handler)
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(check-type body clog-body)
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(set-on-storage (window body) (lambda (obj data)
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(declare (ignore obj))
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(set-on-storage (window body) nil)
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(when (equalp (getf data :key)
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*clog-auth-key*)
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(funcall handler body)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Implementation - clog-auth - Authorization
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defparameter *authorization-hash* (make-hash-table* :test #'equalp)
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"Hash table of role to action")
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;;;;;;;;;;;;;;;;;;;;;;;
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;; add-authorization ;;
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;;;;;;;;;;;;;;;;;;;;;;;
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(defun add-authorization (role-list action-list)
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"Add to each role in ROLE-LIST every action in ACTION-LIST"
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(dolist (role role-list)
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(dolist (action action-list)
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(setf (gethash role *authorization-hash*)
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(adjoin action (gethash role *authorization-hash*))))))
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;;;;;;;;;;;;;;;;;;;;;
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;; is-authorized-p ;;
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;;;;;;;;;;;;;;;;;;;;;
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(defun is-authorized-p (role-list action)
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"Given ROLE-LIST is action authorized. If action is nil returns t."
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(if action
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(dolist (role role-list nil)
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(when (member action (gethash role *authorization-hash*))
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(return t)))
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t))
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