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-- Copyright 2008-2011 Jo-Philipp Wich <xm@subsignal.org>
-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Licensed to the public under the Apache License 2.0.
local os = require "os"
local io = require "io"
local fs = require "nixio.fs"
local util = require "luci.util"
local type = type
local pairs = pairs
local error = error
local table = table
local ipkg = "opkg --force-removal-of-dependent-packages --force-overwrite --nocase"
local icfg = "/etc/opkg.conf"
--- LuCI OPKG call abstraction library
module "luci.model.ipkg"
-- Internal action function
local function _action(cmd, ...)
local pkg = ""
for k, v in pairs({...}) do
pkg = pkg .. " '" .. v:gsub("'", "") .. "'"
end
local c = "%s %s %s >/tmp/opkg.stdout 2>/tmp/opkg.stderr" %{ ipkg, cmd, pkg }
local r = os.execute(c)
local e = fs.readfile("/tmp/opkg.stderr")
local o = fs.readfile("/tmp/opkg.stdout")
fs.unlink("/tmp/opkg.stderr")
fs.unlink("/tmp/opkg.stdout")
return r, o or "", e or ""
end
-- Internal parser function
local function _parselist(rawdata)
if type(rawdata) ~= "function" then
error("OPKG: 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
-- OPKG 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 OPKG return code, STDOUT and STDERR
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 OPKG return code, STDOUT and STDERR
function remove(...)
return _action("remove", ...)
end
--- Update package lists.
-- @return Boolean indicating the status of the action
-- @return OPKG return code, STDOUT and STDERR
function update()
return _action("update")
end
--- Upgrades all installed packages.
-- @return Boolean indicating the status of the action
-- @return OPKG return code, STDOUT and STDERR
function upgrade()
return _action("upgrade")
end
-- List helper
function _list(action, pat, cb)
local fd = io.popen(ipkg .. " " .. action ..
(pat and (" '%s'" % pat:gsub("'", "")) or ""))
if fd then
local name, version, desc
while true do
local line = fd:read("*l")
if not line then break end
name, version, desc = line:match("^(.-) %- (.-) %- (.+)")
if not name then
name, version = line:match("^(.-) %- (.+)")
desc = ""
end
cb(name, version, desc)
name = nil
version = nil
desc = nil
end
fd:close()
end
end
--- List all packages known to opkg.
-- @param pat Only find packages matching this pattern, nil lists all packages
-- @param cb Callback function invoked for each package, receives name, version and description as arguments
-- @return nothing
function list_all(pat, cb)
_list("list", pat, cb)
end
--- List installed packages.
-- @param pat Only find packages matching this pattern, nil lists all packages
-- @param cb Callback function invoked for each package, receives name, version and description as arguments
-- @return nothing
function list_installed(pat, cb)
_list("list_installed", pat, cb)
end
--- Find packages that match the given pattern.
-- @param pat Find packages whose names or descriptions match this pattern, nil results in zero results
-- @param cb Callback function invoked for each patckage, receives name, version and description as arguments
-- @return nothing
function find(pat, cb)
_list("find", pat, cb)
end
--- Determines the overlay root used by opkg.
-- @return String containing the directory path of the overlay root.
function overlay_root()
local od = "/"
local fd = io.open(icfg, "r")
if fd then
local ln
repeat
ln = fd:read("*l")
if ln and ln:match("^%s*option%s+overlay_root%s+") then
od = ln:match("^%s*option%s+overlay_root%s+(%S+)")
local s = fs.stat(od)
if not s or s.type ~= "dir" then
od = "/"
end
break
end
until not ln
fd:close()
end
return od
end
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