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--[[ ACF Logon/Logoff authenticator that uses plaintext files
Copyright (c) 2007 Nathan Angelacos
GPL2 license
Rather than come up with a way to name fields in the plaintext files, we
create a different file for each field.
]]--
module (..., package.seeall)
list_fields = function(self, tabl)
if not self or not tabl or tabl == "" then
return {}
end
local fields = {}
for file in fs.find(".*"..tabl, self.conf.confdir) do
local field = string.match(file, "([^/]*)"..tabl.."$") or ""
if fs.is_file(file) and field ~= "" then
fields[#fields + 1] = field
end
end
return fields
end
read_field = function(self, tabl, field)
if not self or not tabl or tabl == "" or not field then
return nil
end
local row = {}
-- open our password file
local passwd_path = self.conf.confdir .. field .. tabl
local f = io.open(passwd_path)
if f then
local m = (f:read("*all") or "" ).. "\n"
f:close()
for l in string.gmatch(m, "([^\n]+)\n?") do
local a = {}
a.id, a.entry = string.match(l, "^([^:=]*)[:=](.*)")
if a.id then
table.insert(row, a)
end
end
return row
else
return nil
end
end
delete_field = function(self, tabl, field)
if not self or not tabl or tabl == "" or not field then
return false
end
local passwd_path = self.conf.confdir .. field .. tabl
os.remove(passwd_path)
return true
end
write_entry = function(self, tabl, field, id, entry)
if not self or not tabl or tabl == "" or not field or not id or not entry then
return false
end
-- Set path to passwordfile
local passwd_path = self.conf.confdir .. field .. tabl
-- Write the newline into the file
if fs.is_file(passwd_path) == false then fs.create_file(passwd_path) posix.chmod(passwd_path, "rw-------") end
if fs.is_file(passwd_path) == false then return false end
local passwdfilecontent = fs.read_file_as_array(passwd_path) or {}
local output = {id .. ":" .. entry}
for k,v in pairs(passwdfilecontent) do
if not ( string.match(v, "^".. id .. "[:=]") ) and not string.match(v, "^%s*$") then
table.insert(output, v)
end
end
fs.write_file(passwd_path, table.concat(output, "\n"))
return true
end
read_entry = function(self, tabl, field, id)
if not self or not tabl or tabl == "" or not field or not id then
return nil
end
-- Set path to passwordfile
local passwd_path = self.conf.confdir .. field .. tabl
local passwdfilecontent = fs.read_file_as_array(passwd_path) or {}
local entry
for k,v in pairs(passwdfilecontent) do
if string.match(v, "^".. id .. "[:=]") then
return string.match(v, "^"..id.."[:=](.*)")
end
end
return nil
end
delete_entry = function (self, tabl, field, id)
if not self or not tabl or tabl == "" or not field or not id then
return false
end
local result = false
local passwd_path = self.conf.confdir .. field .. tabl
local passwdfilecontent = fs.read_file_as_array(passwd_path) or {}
local output = {}
for k,v in pairs(passwdfilecontent) do
if not ( string.match(v, "^".. id .. "[:=]") ) and not string.match(v, "^%s*$") then
table.insert(output, v)
else
result = true
end
end
--Save the updated table
if result == true then
fs.write_file(passwd_path, table.concat(output,"\n"))
end
-- If deleting the main field, delete all other fields also
if field == "" then
local fields = list_fields(self, tabl)
for i,fld in ipairs(fields) do
delete_entry(self, tabl, fld, id)
end
end
return result
end
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