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-- deets: file.lua
-- Copyright (C) 2009-2012 Clint Adams
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 3 of the License, or
-- (at your option) any later version.
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
--
require("deets")
-- require("lfs")
require("md5")
require("resource")
require("cosmo")
local ipairs = ipairs
local register_resource = register_resource
local deets = deets
local table = table
local string = string
local io = io
local md5 = md5
local cosmo = cosmo
local tempdir = tempdir
local print = print -- delete this soonish
module("file")
function checksum(filename)
local f, x
if (not filename) then return nil end
f = io.open(filename,"rb")
if (f) then
x = f:read("*a")
f:close()
return md5.sumhexa(x)
else
return nil
end
end
function file_or_dir(files, gota)
if (gota.mode and string.find(gota.mode, "[^0-7]")) then
print("Invalid mode "..gota.mode..", ignoring requirement.")
gota.mode = nil
end
for _,y in ipairs(files) do
if (not register_resource("file", y, gota)) then
print("Registration error", y)
end
end
end
function file(files, gota)
gota.fileordir = "file"
file_or_dir(files, gota)
end
function directory(files, gota)
gota.fileordir = "directory"
file_or_dir(files, gota)
end
function iscompliant(file, gota)
-- stat = lfs.symlinkattributes(file)
local stat = nil
type, sm, su, sg = deets.tempstat(file)
if (type) then
stat = {}
stat.mode = sm
stat.uid = su
stat.gid = sg
end
if (gota.ensure == "present") then
if (not stat) then return false end
if (type~= gota.fileordir) then return false end
if (gota.mode and stat.mode ~= gota.mode) then return false end
if (gota.owner and gota.owner ~= deets.username(stat.uid)) then return false end
if (gota.group and gota.group ~= deets.groupname(stat.gid)) then return false end
if (gota.source and (checksum(file) ~= checksum(gota.source))) then
return false
end
elseif (gota.ensure == "absent") then
if (stat) then return false end
end
return true
end
function rectify(file, gota)
-- stat = lfs.symlinkattributes(file)
local stat = nil
local steps = {}
type, sm, su, sg = deets.tempstat(file)
if (type) then
stat = {}
stat.mode = sm
stat.uid = su
stat.gid = sg
end
if (gota.ensure == "present") then
if (stat and type~=gota.fileordir) then
if (gota.fileordir == "file") then
if (type == "directory") then
table.insert(steps,"rmdir "..gota.name.."; touch "..gota.name)
else
table.insert(steps,"rm -f "..gota.name.."; touch "..gota.name)
end
elseif (gota.fileordir == "directory") then
table.insert(steps,"rm -f "..gota.name.."; mkdir "..gota.name)
end
elseif (type == nil) then
stat = {}
stat.mode = "fake"
stat.uid = "fake"
stat.gid = "fake"
if (gota.fileordir == "directory") then
table.insert(steps,"mkdir "..gota.name)
end
end
if (gota.source and (checksum(file) ~= checksum(gota.source))) then
table.insert(steps,"cp "..gota.source.." "..file)
end
if (gota.mode and stat.mode ~= gota.mode) then table.insert(steps,"chmod "..gota.mode.." "..gota.name) end
if ((not type) or (gota.owner and gota.owner ~= deets.username(stat.uid))) then table.insert(steps,"chown "..gota.owner.." ".. gota.name) end
if ((not type) or (gota.group and gota.group ~= deets.groupname(stat.gid))) then table.insert(steps,"chgrp "..gota.group.." ".. gota.name) end
elseif (stat and gota.ensure == "absent") then
if (type == "directory") then table.insert(steps, "rmdir "..gota.name)
elseif (type == "file") then table.insert(steps, "rm -f "..gota.name) end
end
return table.concat(steps, "\n")
end
function cosmotemplate(filename, addlvars)
local f, x, fill, newname, newfile
f = io.open(filename,"rb")
if (f) then
x = f:read("*a")
f:close()
fill = cosmo.fill(x, {systeminfo = deets.systeminfo, map=cosmo.map, inject=cosmo.inject, ["if"] = cosmo.cif, v=addlvars})
newname = tempdir..string.sub(filename, string.find (filename, "/[^/]+$"))
newfile = io.open(newname,"wb")
newfile:write(fill)
newfile:close()
return newname
else
return nil
end
end
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