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--[[
Copyright (c) 2012-2014 Kaarle Ritvanen
See LICENSE file for license details
--]]
local M = require('acf2.model')
local object = require('acf2.object')
local digest = require('crypto').digest
local Role = M.new()
Role.permissions = M.Set{type=M.Reference{scope='../../../permissions'}}
local function hash_password(algorithm, salt, password)
return algorithm..'$'..salt..'$'..digest(algorithm, salt..password)
end
local hash_pattern = '^(%w+)%$(%w+)%$%x+$'
local Password = object.class(M.String)
function Password:init() object.super(self, Password):init{detail=true} end
function Password:normalize(context, value)
if value:find(hash_pattern) then return value end
local salt = ''
for i = 1,12 do
local c = math.random(48, 109)
if c > 57 then c = c + 7 end
if c > 90 then c = c + 6 end
salt = salt..string.char(c)
end
return hash_password('sha256', salt, value)
end
local User = M.new()
User.password = Password
User.real_name = M.String
User.superuser = M.Boolean{default=false}
User.roles = M.Set{type=M.Reference{scope='../../../roles'}}
function User:check_password(password)
if not self.password then return false end
local _, _, algorithm, salt = self.password:find(hash_pattern)
if not salt then return false end
return hash_password(algorithm, salt, password) == self.password
end
function User:check_permission(permission)
-- TODO audit trail
print('check permission', permission)
if self.superuser then return true end
assert(getmetatable(self).txn:fetch('/auth/permissions')[permission])
for _, role in M.node.pairs(self.roles, true) do
for _, p in M.node.pairs(role.permissions, true) do
if p == permission then return true end
end
end
return false
end
local Authentication = M.new()
Authentication.users = M.Collection{type=User}
Authentication.roles = M.Collection{type=Role}
Authentication.permissions = M.Set{
type=M.String,
addr='/volatile/aaa/permissions'
}
M.register(
'auth',
Authentication,
{
addr='/json'..require('posix').getcwd()..'/config/aaa.json',
ui_name='Authentication'
}
)
M.permission.defaults('/auth')
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