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--[[
LuCI - Lua Configuration Interface
(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
$Id$
]]--
local os = require "os"
local io = require "io"
local util = require "luci.util"
local type = type
local pairs = pairs
local error = error
local ipkg = "opkg"
--- LuCI IPKG/OPKG call abstraction library
module "luci.model.ipkg"
-- Internal action function
local function _action(cmd, ...)
local pkg = ""
arg.n = nil
for k, v in pairs(arg) do
pkg = pkg .. " '" .. v:gsub("'", "") .. "'"
end
local c = ipkg.." "..cmd.." "..pkg.." >/dev/null 2>&1"
local r = os.execute(c)
return (r == 0), r
end
-- Internal parser function
local function _parselist(rawdata)
if type(rawdata) ~= "function" then
error("IPKG: Invalid rawdata given")
end
local data = {}
local c = {}
local l = nil
for line in rawdata do
if line:sub(1, 1) ~= " " then
local key, val = line:match("(.-): ?(.*)%s*")
if key and val then
if key == "Package" then
c = {Package = val}
data[val] = c
elseif key == "Status" then
c.Status = {}
for j in val:gmatch("([^ ]+)") do
c.Status[j] = true
end
else
c[key] = val
end
l = key
end
else
-- Multi-line field
c[l] = c[l] .. "\n" .. line
end
end
return data
end
-- Internal lookup function
local function _lookup(act, pkg)
local cmd = ipkg .. " " .. act
if pkg then
cmd = cmd .. " '" .. pkg:gsub("'", "") .. "'"
end
-- IPKG sometimes kills the whole machine because it sucks
-- Therefore we have to use a sucky approach too and use
-- tmpfiles instead of directly reading the output
local tmpfile = os.tmpname()
os.execute(cmd .. (" >%s 2>/dev/null" % tmpfile))
local data = _parselist(io.lines(tmpfile))
os.remove(tmpfile)
return data
end
--- Return information about installed and available packages.
-- @param pkg Limit output to a (set of) packages
-- @return Table containing package information
function info(pkg)
return _lookup("info", pkg)
end
--- Return the package status of one or more packages.
-- @param pkg Limit output to a (set of) packages
-- @return Table containing package status information
function status(pkg)
return _lookup("status", pkg)
end
--- Install one or more packages.
-- @param ... List of packages to install
-- @return Boolean indicating the status of the action
-- @return IPKG return code
function install(...)
return _action("install", ...)
end
--- Determine whether a given package is installed.
-- @param pkg Package
-- @return Boolean
function installed(pkg)
local p = status(pkg)[pkg]
return (p and p.Status and p.Status.installed)
end
--- Remove one or more packages.
-- @param ... List of packages to install
-- @return Boolean indicating the status of the action
-- @return IPKG return code
function remove(...)
return _action("remove", ...)
end
--- Update package lists.
-- @return Boolean indicating the status of the action
-- @return IPKG return code
function update()
return _action("update")
end
--- Upgrades all installed packages.
-- @return Boolean indicating the status of the action
-- @return IPKG return code
function upgrade()
return _action("upgrade")
end
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