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--[[
LuCI - Lua Configuration Interface
Copyright 2008 Steven Barth <steven@midlink.org>
Copyright 2008-2011 Jo-Philipp Wich <xm@subsignal.org>
Copyright 2012 Daniel Golle <dgolle@allnet.de>
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
$Id$
]]--
module("luci.controller.failsafe.failsafe", package.seeall)
function index()
local root = node()
if not root.target then
root.target = alias("failsafe")
root.index = true
end
page = node()
page.lock = true
page.target = alias("failsafe")
page.subindex = true
page.index = false
page = node("failsafe")
page.title = _("Fail-safe")
page.target = alias("failsafe", "flashops")
page.order = 5
page.setuser = "root"
page.setgroup = "root"
page.index = true
entry({"failsafe", "flashops"}, call("action_flashops"), _("Flash Firmware"), 70).index = true
entry({"failsafe", "reboot"}, call("action_reboot"), _("Reboot"), 90)
end
function action_flashops()
local sys = require "luci.sys"
local fs = require "luci.fs"
local upgrade_avail = nixio.fs.access("/lib/upgrade/platform.sh")
local reset_avail = os.execute([[grep '"rootfs_data"' /proc/mtd >/dev/null 2>&1]]) == 0
local image_tmp = "/tmp/firmware.img"
local function image_supported()
-- XXX: yay...
return ( 0 == os.execute(
". /lib/functions.sh; " ..
"include /lib/upgrade; " ..
"platform_check_image %q >/dev/null"
% image_tmp
) )
end
local function image_checksum()
return (luci.sys.exec("md5sum %q" % image_tmp):match("^([^%s]+)"))
end
local function storage_size()
local size = 0
if nixio.fs.access("/proc/mtd") then
for l in io.lines("/proc/mtd") do
local d, s, e, n = l:match('^([^%s]+)%s+([^%s]+)%s+([^%s]+)%s+"([^%s]+)"')
if n == "linux" or n == "firmware" then
size = tonumber(s, 16)
break
end
end
elseif nixio.fs.access("/proc/partitions") then
for l in io.lines("/proc/partitions") do
local x, y, b, n = l:match('^%s*(%d+)%s+(%d+)%s+([^%s]+)%s+([^%s]+)')
if b and n and not n:match('[0-9]') then
size = tonumber(b) * 1024
break
end
end
end
return size
end
local fp
luci.http.setfilehandler(
function(meta, chunk, eof)
if not fp then
if meta and meta.name == "image" then
fp = io.open(image_tmp, "w")
end
end
if chunk then
fp:write(chunk)
end
if eof then
fp:close()
end
end
)
if luci.http.formvalue("image") or luci.http.formvalue("step") then
--
-- Initiate firmware flash
--
local step = tonumber(luci.http.formvalue("step") or 1)
if step == 1 then
if image_supported() then
luci.template.render("failsafe/upgrade", {
checksum = image_checksum(),
storage = storage_size(),
size = nixio.fs.stat(image_tmp).size,
keep = false
})
else
nixio.fs.unlink(image_tmp)
luci.template.render("failsafe/flashops", {
reset_avail = reset_avail,
upgrade_avail = upgrade_avail,
image_invalid = true
})
end
--
-- Start sysupgrade flash
--
elseif step == 2 then
local keep = (luci.http.formvalue("keep") == "1") and "" or "-n"
luci.template.render("failsafe/applyreboot", {
title = luci.i18n.translate("Flashing..."),
msg = luci.i18n.translate("The system is flashing now.<br /> DO NOT POWER OFF THE DEVICE!<br /> Wait a few minutes before you try to reconnect. It might be necessary to renew the address of your computer to reach the device again, depending on your settings."),
addr = (#keep > 0) and "192.168.1.1" or nil
})
fork_exec("killall dropbear uhttpd; sleep 1; /sbin/sysupgrade %s %q" %{ keep, image_tmp })
end
else
--
-- Overview
--
luci.template.render("failsafe/flashops", {
reset_avail = reset_avail,
upgrade_avail = upgrade_avail
})
end
end
function action_reboot()
local reboot = luci.http.formvalue("reboot")
luci.template.render("failsafe/reboot", {reboot=reboot})
if reboot then
luci.sys.reboot()
end
end
function fork_exec(command)
local pid = nixio.fork()
if pid > 0 then
return
elseif pid == 0 then
-- change to root dir
nixio.chdir("/")
-- patch stdin, out, err to /dev/null
local null = nixio.open("/dev/null", "w+")
if null then
nixio.dup(null, nixio.stderr)
nixio.dup(null, nixio.stdout)
nixio.dup(null, nixio.stdin)
if null:fileno() > 2 then
null:close()
end
end
-- replace with target command
nixio.exec("/bin/sh", "-c", command)
end
end
function ltn12_popen(command)
local fdi, fdo = nixio.pipe()
local pid = nixio.fork()
if pid > 0 then
fdo:close()
local close
return function()
local buffer = fdi:read(2048)
local wpid, stat = nixio.waitpid(pid, "nohang")
if not close and wpid and stat == "exited" then
close = true
end
if buffer and #buffer > 0 then
return buffer
elseif close then
fdi:close()
return nil
end
end
elseif pid == 0 then
nixio.dup(fdo, nixio.stdout)
fdi:close()
fdo:close()
nixio.exec("/bin/sh", "-c", command)
end
end
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