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-- Copyright 2008-2011 Jo-Philipp Wich <jow@openwrt.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"
module "luci.model.ipkg"
-- Internal action function
local function _action(cmd, ...)
local cmdline = { ipkg, cmd }
local k, v
for k, v in pairs({...}) do
cmdline[#cmdline+1] = util.shellquote(v)
end
local c = "%s >/tmp/opkg.stdout 2>/tmp/opkg.stderr" % table.concat(cmdline, " ")
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(cmd, pkg)
local cmdline = { ipkg, cmd }
if pkg then
cmdline[#cmdline+1] = util.shellquote(pkg)
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("%s >%s 2>/dev/null" %{ table.concat(cmdline, " "), tmpfile })
local data = _parselist(io.lines(tmpfile))
os.remove(tmpfile)
return data
end
function info(pkg)
return _lookup("info", pkg)
end
function status(pkg)
return _lookup("status", pkg)
end
function install(...)
return _action("install", ...)
end
function installed(pkg)
local p = status(pkg)[pkg]
return (p and p.Status and p.Status.installed)
end
function remove(...)
return _action("remove", ...)
end
function update()
return _action("update")
end
function upgrade()
return _action("upgrade")
end
-- List helper
local function _list(action, pat, cb)
local cmdline = { ipkg, action }
if pat then
cmdline[#cmdline+1] = util.shellquote(pat)
end
local fd = io.popen(table.concat(cmdline, " "))
if fd then
local name, version, sz, desc
while true do
local line = fd:read("*l")
if not line then break end
name, version, sz, desc = line:match("^(.-) %- (.-) %- (.-) %- (.+)")
if not name then
name, version, sz = line:match("^(.-) %- (.-) %- (.+)")
desc = ""
end
if name and version then
if #version > 26 then
version = version:sub(1,21) .. ".." .. version:sub(-3,-1)
end
cb(name, version, sz, desc)
end
name = nil
version = nil
sz = nil
desc = nil
end
fd:close()
end
end
function list_all(pat, cb)
_list("list --size", pat, cb)
end
function list_installed(pat, cb)
_list("list_installed --size", pat, cb)
end
function find(pat, cb)
_list("find --size", pat, cb)
end
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
function compare_versions(ver1, comp, ver2)
if not ver1 or not ver2
or not comp or not (#comp > 0) then
error("Invalid parameters")
return nil
end
-- correct compare string
if comp == "<>" or comp == "><" or comp == "!=" or comp == "~=" then comp = "~="
elseif comp == "<=" or comp == "<" or comp == "=<" then comp = "<="
elseif comp == ">=" or comp == ">" or comp == "=>" then comp = ">="
elseif comp == "=" or comp == "==" then comp = "=="
elseif comp == "<<" then comp = "<"
elseif comp == ">>" then comp = ">"
else
error("Invalid compare string")
return nil
end
local av1 = util.split(ver1, "[%.%-]", nil, true)
local av2 = util.split(ver2, "[%.%-]", nil, true)
local max = table.getn(av1)
if (table.getn(av1) < table.getn(av2)) then
max = table.getn(av2)
end
for i = 1, max, 1 do
local s1 = av1[i] or ""
local s2 = av2[i] or ""
-- first "not equal" found return true
if comp == "~=" and (s1 ~= s2) then return true end
-- first "lower" found return true
if (comp == "<" or comp == "<=") and (s1 < s2) then return true end
-- first "greater" found return true
if (comp == ">" or comp == ">=") and (s1 > s2) then return true end
-- not equal then return false
if (s1 ~= s2) then return false end
end
-- all equal and not compare greater or lower then true
return not (comp == "<" or comp == ">")
end
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