function action_flashops()

function action_flashops()
local e=require"luci.sys"
local t=require"nixio.fs"
local i=t.access("/lib/upgrade/platform.sh")
local o=os.execute([[grep '"rootfs_data"' /proc/mtd >/dev/null 2>&1]])==0
local s="tar -xzC/ >/dev/null 2>&1"
local r="sysupgrade --create-backup - 2>/dev/null"
local e="/tmp/firmware.img"
local function n()
return(os.execute("sysupgrade -T %q >/dev/null"%e)==0)
end


local function h()
return(luci.sys.exec("md5sum %q"%e):match("^([^%s]+)"))
end

local function d()

local e=0

if t.access("/proc/mtd")then
for t in io.lines("/proc/mtd")do
local o,a,o,t=t:match('^([^%s]+)%s+([^%s]+)%s+([^%s]+)%s+"([^%s]+)"')

if t=="linux"or t=="firmware"then
e=tonumber(a,16)
break

end

end
elseif t.access("/proc/partitions")then
for t in io.lines("/proc/partitions")do
local o,o,a,t=t:match('^%s*(%d+)%s+(%d+)%s+([^%s]+)%s+([^%s]+)')
if a and t and not t:match('[0-9]')then
e=tonumber(a)*1024
break
end
end
end
return e
end
local a

luci.http.setfilehandler(
function(o,t,i)
if not a then
if o and o.name=="image"then
a=io.open(e,"w")
else
a=io.popen(s,"w")
end
end
if t then
a:write(t)
end
if i then
a:close()
end
end
)

if luci.http.formvalue("backup")then
local e=ltn12_popen(r)
luci.http.header('Content-Disposition','attachment; filename="backup-%s-%s.tar.gz"'%{
luci.sys.hostname(),os.date("%Y-%m-%d")})
luci.http.prepare_content("application/x-targz")
luci.ltn12.pump.all(e,luci.http.write)
elseif luci.http.formvalue("restore")then
local e=luci.http.formvalue("archive")
if e and#e>0 then
luci.template.render("admin_system/applyreboot")
luci.sys.reboot()
end
elseif luci.http.formvalue("image")or luci.http.formvalue("step")then
local a=tonumber(luci.http.formvalue("step")or 1)
if a==1 then
if n()then
luci.template.render("admin_system/upgrade",{
checksum=h(),
storage=d(),
size=(t.stat(e,"size")or 0),
keep=(not not luci.http.formvalue("keep"))
})
else
t.unlink(e)
luci.template.render("admin_system/flashops",{
reset_avail=o,
upgrade_avail=i,
image_invalid=true
})
end
elseif a==2 then
local t=(luci.http.formvalue("keep")=="1")and""or"-n"
luci.template.render("admin_system/applyreboot",{
title=luci.i18n.translate("Flashing..."),
msg=luci.i18n.translate("The system is flashing now. DO NOT POWER OFF THE DEVICE! 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=(#t>0)and"192.168.1.1"or nil
})
fork_exec("killall dropbear uhttpd; sleep 1; /sbin/sysupgrade %s %q"%{t,e})
end
elseif o and luci.http.formvalue("reset")then
luci.template.render("admin_system/applyreboot",{
title=luci.i18n.translate("Erasing..."),
msg=luci.i18n.translate("The system is erasing the configuration partition now and will reboot itself when finished."),
addr="192.168.1.1"
})
fork_exec("killall dropbear uhttpd; sleep 1; mtd -r erase rootfs_data")
else
luci.template.render("admin_system/flashops",{
reset_avail=o,
upgrade_avail=i
})
end
end