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module (..., package.seeall)
require("fs")
require("format")
require("getopts")
require("daemoncontrol")
local configfile = "/etc/lbu/lbu.conf"
-- ################################################################################
-- LOCAL FUNCTIONS
local function get_version ()
local f,error = io.popen("/sbin/lbu 2>&1")
local programversion = f:read("*l")
f:close()
return programversion
end
local function getLbuStatus()
local ret = {}
local f = io.popen("/sbin/lbu status -v 2>&1", "r")
if not (f) then return ret end
for line in f:lines() do
if (string.match(line, "^Include files")) then break end
if (string.match(line, "^Exclude files")) then break end
local status, name = string.match(line, "^(%S+)%s+(.+)$")
if (status) and (name) then
ret[string.gsub('/' .. name, "/+", "/")] = status
end
end
f:close()
return ret
end
local function getLbuCommit(flag)
local err = {}
local ret = ""
local f = io.popen("/sbin/lbu commit " .. flag .. " 2>&1", "r")
-- local ret = f:read("*a")
for line in f:lines() do
ret = ret .. line .. "\n"
--Look for error messages in output
local searchrow, search = string.match(line, "^(lbu.*(%-%a).*)")
if (search) then err[search] = searchrow end
end
f:close()
return ret, err
end
local function getciphers()
local opensslciphers = {}
local watchdog = nil
local f = io.popen("/usr/bin/openssl -v 2>&1", "r")
if not (f) then return ciphers end
for line in f:lines() do
if (watchdog) then
for cipher in string.gmatch(line, "(%S+)") do
table.insert(opensslciphers,tostring(cipher))
end
end
if (string.match(line, "^Cipher commands")) then watchdog="yes" end
end
f:close()
return opensslciphers
end
local function getincexl(state)
local incexl = {}
if (string.lower(state) == "include") or (string.lower(state) == "exclude") then
local f = io.popen("/sbin/lbu " .. string.lower(state) .. " -l 2>&1", "r")
if not (f) then return incexl end
for line in f:lines() do
table.insert(incexl,tostring(line))
end
f:close()
end
return incexl
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function getstatus ()
local path = configfile
local status = {}
local statustxt = nil
if (#list() == 0) then
statustxt = "OK! (There is no uncommited files)"
else
statustxt = "WARNING! (Until you commit, you will lose your changes at next reboot/shutdown!)"
end
local config, errors = getconfig()
status["LBU_MEDIA"] = config["LBU_MEDIA"]
status["ENCRYPTION"] = config["ENCRYPTION"]
status["DEFAULT_CIPHER"] = config["DEFAULT_CIPHER"]
status["version"] = get_version()
status["status"] = statustxt
return status, errors
end
function list(self)
local ret = {}
local lbuStatus = getLbuStatus()
for k,v in pairs(lbuStatus) do
ret[#ret + 1] = { name=k, status=v }
end
table.sort(ret, function(a,b) return (a.name < b.name) end)
return ret
end
function getcommit(self, flag)
--See to that only allowed flags are passed to the process
flag = string.match(flag or "", "%-%a") or ""
return getLbuCommit("-v " .. flag)
end
function getsimulate(self, flag)
--See to that only allowed flags are passed to the process
flag = string.match(flag or "", "%-%a") or ""
return getLbuCommit("-n " .. flag)
end
function getconfig ()
local path = configfile
local config = {}
local errors = {}
local lbumedias = {}
table.insert(lbumedias, {name="floppy", value="floppy"})
table.insert(lbumedias, {name="usb", value="usb"})
if (fs.is_file(path)) then
config = getopts.getoptsfromfile(path) or {}
end
config["lbu_included"]= getincexl("include") or {}
config["lbu_excluded"]= getincexl("exclude") or {}
config["LBU_MEDIA_LIST"]= lbumedias or {}
config["DEFAULT_CIPHER_LIST"]= getciphers() or {}
-- Next section is to set/show default values when a option is not configured in the configfile
config["LBU_MEDIA"] = config["LBU_MEDIA"] or ""
config["DEFAULT_CIPHER"] = config["DEFAULT_CIPHER"] or ""
-- Next section is to print errormessages when configs are wrong
if (config["LBU_MEDIA"] == "") or (config["LBU_MEDIA"] == nil) then
errors["LBU_MEDIA"] = "'Media' needs to be configured!"
end
if (config["PASSWORD"] == nil) and (config["ENCRYPTION"] ~= nil) then
errors["PASSWORD"] = "Encryption without password is not allowed!<BR> Deactivate 'Password protection' or configure a password!"
end
for k,v in pairs(errors) do
errors["last"] = v
end
return config, errors
end
function lbuincexcl(self,state,value,addremove)
local incexl = nil
if (string.lower(addremove or "") == "add") then
addremove = ""
elseif (string.lower(addremove or "") == "remove") then
addremove = "-r"
else
return "Function setincexl() - Invalid option! Use add|remove when calling this function!"
end
if (string.lower(state) == "include") or (string.lower(state) == "exclude") then
local f = io.popen("/sbin/lbu " .. string.lower(state) .. " " .. addremove .. " -v " .. value .." 2>&1", "r")
if not (f) then return incexl end
incexl = f:read("*a")
f:close()
else
return "Function setincexl() - Invalid command! Use include|exclude when calling this function!"
end
return incexl
end
function editconfig (self,variable,value)
local configfilecontent = nil
local path = configfile
local cmdoutput = nil
if not (fs.is_file(path)) then
fs.write_file(path,"")
end
local deactivate = ""
if not (value) or (value == "") then
deactivate = "#"
end
-- Hardcode some parameters (e.g for some checkboxes)
if (variable == "ENCRYPTION") then value = "$DEFAULT_CIPHER" end
configfilecontent = fs.read_file_as_array(path) or {}
-- Search if the variable is defined in the file
for k,v in pairs(configfilecontent) do
if (string.match(v,"^%s*%#*%s*" .. variable)) then
cmdoutput = format.search_replace(configfilecontent,"^%s*%#*%s*" .. variable .. ".*$", deactivate .. variable .. "=" .. value)
break
end
end
--If variable is not changed (didn't exist) then create a new row with this variable
if not (cmdoutput) then
cmdoutput = configfilecontent
table.insert(cmdoutput,deactivate .. variable .. "=" .. (value or ""))
end
-- Write changes to file
fs.write_file(path,table.concat(cmdoutput,"\n"))
return cmdoutput
end
function get_filedetails()
local filedetails = {}
local path = configfile
filedetails.details = {path=path, size="0",mtime=""}
filedetails.content = ""
if (fs.is_file(path)) then
filedetails.details = fs.stat(path)
filedetails.content = fs.read_file(path)
end
return filedetails
end
function update_filecontent (self, modifications)
local path = configfile
local file_result,err = fs.write_file(path, format.dostounix(modifications))
return file_result, err
end
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