modules/niu/luasrc/controller/niu/system.lua

   1 --[[
   2 LuCI - Lua Development Framework
   3
   4 Copyright 2009 Steven Barth <steven@midlink.org>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 $Id$
  13 ]]--
  14
  15 local require, pairs, unpack, tonumber = require, pairs, unpack, tonumber
  16 module "luci.controller.niu.system"
  17
  18 function index()
  19         local toniu = {on_success_to={"niu"}}
  20
  21         local e = entry({"niu", "system"}, alias("niu"), "System", 40)
  22         e.niu_dbtemplate = "niu/system"
  23         e.niu_dbtasks = true
  24         e.niu_dbicon = "icons32/preferences-system.png"
  25
  26         entry({"niu", "system", "general"},
  27         cbi("niu/system/general", toniu), "Configure Device", 1)
  28
  29         entry({"niu", "system", "backup"}, call("backup"), "Backup or Restore Settings", 2)
  30         entry({"niu", "system", "upgrade"}, call("upgrade"), "Upgrade Firmware", 30)
  31 end
  32
  33 function backup()
  34         local dsp = require "luci.dispatcher"
  35         local os, io = require "os", require "io"
  36         local uci = require "luci.model.uci".inst
  37         local nixio, nutl = require "nixio", require "nixio.util"
  38         local fs = require "nixio.fs"
  39         local http = require "luci.http"
  40         local tpl = require "luci.template"
  41
  42         local restore_fpi
  43         http.setfilehandler(
  44                 function(meta, chunk, eof)
  45                         if not restore_fpi then
  46                                 restore_fpi = io.popen("tar -xzC/ >/dev/null 2>&1", "w")
  47                         end
  48                         if chunk then
  49                                 restore_fpi:write(chunk)
  50                         end
  51                         if eof then
  52                                 restore_fpi:close()
  53                         end
  54                 end
  55         )
  56
  57         local reset_avail = (fs.readfile("/proc/mtd") or ""):find('"rootfs_data"')
  58         local upload = http.formvalue("archive")
  59         local backup = http.formvalue("backup")
  60         local reset  = reset_avail and http.formvalue("reset")
  61         local backup_cmd  = "tar -cz %s 2>/dev/null"
  62
  63         if http.formvalue("cancel") then
  64                 return http.redirect(dsp.build_url("niu"))
  65         end
  66
  67         if backup then
  68                 local call = {"/bin/tar", "-cz"}
  69                 for k, v in pairs(uci:get_all("luci", "flash_keep")) do
  70                         if k:byte() ~= 46 then  -- k[1] ~= "."
  71                                 nutl.consume(fs.glob(v), call)
  72                         end
  73                 end
  74
  75
  76                 http.header(
  77                         'Content-Disposition', 'attachment; filename="backup-%s-%s.tar.gz"' % {
  78                                 nixio.uname().nodename, os.date("%Y-%m-%d")
  79                         }
  80                 )
  81                 http.prepare_content("application/x-targz")
  82
  83
  84                 local fdin, fdout = nixio.pipe()
  85                 local devnull = nixio.open("/dev/null", "r+")
  86                 local proc = nixio.fork()
  87
  88                 if proc == 0 then
  89                         fdin:close()
  90                         nixio.dup(devnull, nixio.stdin)
  91                         nixio.dup(devnull, nixio.stderr)
  92                         nixio.dup(fdout, nixio.stdout)
  93                         nixio.exec(unpack(call))
  94                         os.exit(1)
  95                 end
  96
  97                 fdout:close()
  98                 http.splice(fdin)
  99                 http.close()
 100         elseif (upload and #upload > 0) or reset then
 101                 tpl.render("niu/system/reboot")
 102                 if nixio.fork() == 0 then
 103                         nixio.nanosleep(1)
 104                         if reset then
 105                                 nixio.execp("mtd", "-r", "erase", "rootfs_data")
 106                         else
 107                                 nixio.execp("reboot")
 108                         end
 109                         os.exit(1)
 110                 end
 111         else
 112                 tpl.render("niu/system/backup", {reset_avail = reset_avail})
 113         end
 114 end
 115
 116 function upgrade()
 117         local io, os, table = require "io", require "os", require "table"
 118         local uci = require "luci.store".uci_state
 119         local http = require "luci.http"
 120         local util = require "luci.util"
 121         local tpl = require "luci.template"
 122         local nixio = require "nixio", require "nixio.util", require "nixio.fs"
 123
 124
 125         local tmpfile = "/tmp/firmware.img"
 126
 127         local function image_supported()
 128                 -- XXX: yay...
 129                 return ( 0 == os.execute(
 130                         ". /etc/functions.sh; " ..
 131                         "include /lib/upgrade; " ..
 132                         "platform_check_image %q >/dev/null"
 133                                 % tmpfile
 134                 ) )
 135         end
 136
 137         local function image_checksum()
 138                 return (util.exec("md5sum %q" % tmpfile):match("^([^%s]+)"))
 139         end
 140
 141         local function storage_size()
 142                 local size = 0
 143                 if nixio.fs.access("/proc/mtd") then
 144                         for l in io.lines("/proc/mtd") do
 145                                 local d, s, e, n = l:match('^([^%s]+)%s+([^%s]+)%s+([^%s]+)%s+"([^%s]+)"')
 146                                 if n == "linux" then
 147                                         size = tonumber(s, 16)
 148                                         break
 149                                 end
 150                         end
 151                 elseif nixio.fs.access("/proc/partitions") then
 152                         for l in io.lines("/proc/partitions") do
 153                                 local x, y, b, n = l:match('^%s*(%d+)%s+(%d+)%s+([^%s]+)%s+([^%s]+)')
 154                                 if b and n and not n:match('[0-9]') then
 155                                         size = tonumber(b) * 1024
 156                                         break
 157                                 end
 158                         end
 159                 end
 160                 return size
 161         end
 162
 163
 164         -- Install upload handler
 165         local file
 166         http.setfilehandler(
 167                 function(meta, chunk, eof)
 168                         if not nixio.fs.access(tmpfile) and not file and chunk and #chunk > 0 then
 169                                 file = io.open(tmpfile, "w")
 170                         end
 171                         if file and chunk then
 172                                 file:write(chunk)
 173                         end
 174                         if file and eof then
 175                                 file:close()
 176                         end
 177                 end
 178         )
 179
 180
 181         -- Determine state
 182         local keep_avail   = true
 183         local step         = tonumber(http.formvalue("step") or 1)
 184         local has_image    = nixio.fs.access(tmpfile)
 185         local has_support  = image_supported()
 186         local has_platform = nixio.fs.access("/lib/upgrade/platform.sh")
 187         local has_upload   = http.formvalue("image")
 188
 189         -- This does the actual flashing which is invoked inside an iframe
 190         -- so don't produce meaningful errors here because the the
 191         -- previous pages should arrange the stuff as required.
 192         if step == 4 then
 193                 if has_platform and has_image and has_support then
 194                         -- Mimetype text/plain
 195                         http.prepare_content("text/plain")
 196
 197                         local call = {}
 198                         for k, v in pairs(uci:get_all("luci", "flash_keep")) do
 199                                 if k:byte() ~= 46 then  -- k[1] ~= "."
 200                                         nixio.util.consume(nixio.fs.glob(v), call)
 201                                 end
 202                         end
 203
 204                         -- Now invoke sysupgrade
 205                         local keepcfg = keep_avail and http.formvalue("keepcfg") == "1"
 206                         local fd = io.popen("/sbin/luci-flash %s %q" %{
 207                                 keepcfg and "-k %q" % table.concat(call, " ") or "", tmpfile
 208                         })
 209
 210                         if fd then
 211                                 while true do
 212                                         local ln = fd:read("*l")
 213                                         if not ln then break end
 214                                         http.write(ln .. "\n")
 215                                 end
 216                                 fd:close()
 217                         end
 218
 219                         -- Make sure the device is rebooted
 220                         if nixio.fork() == 0 then
 221                                 nixio.nanosleep(1)
 222                                 nixio.execp("reboot")
 223                                 os.exit(1)
 224                         end
 225                 end
 226
 227
 228         --
 229         -- This is step 1-3, which does the user interaction and
 230         -- image upload.
 231         --
 232
 233         -- Step 1: file upload, error on unsupported image format
 234         elseif not has_image or not has_support or step == 1 then
 235                 -- If there is an image but user has requested step 1
 236                 -- or type is not supported, then remove it.
 237                 if has_image then
 238                         nixio.fs.unlink(tmpfile)
 239                 end
 240
 241                 tpl.render("niu/system/upgrade", {
 242                         step=1,
 243                         bad_image=(has_image and not has_support or false),
 244                         keepavail=keep_avail,
 245                         supported=has_platform
 246                 } )
 247
 248         -- Step 2: present uploaded file, show checksum, confirmation
 249         elseif step == 2 then
 250                 tpl.render("niu/system/upgrade", {
 251                         step=2,
 252                         checksum=image_checksum(),
 253                         filesize=nixio.fs.stat(tmpfile).size,
 254                         flashsize=storage_size(),
 255                         keepconfig=(keep_avail and http.formvalue("keepcfg") == "1")
 256                 } )
 257
 258         -- Step 3: load iframe which calls the actual flash procedure
 259         elseif step == 3 then
 260                 tpl.render("niu/system/upgrade", {
 261                         step=3,
 262                         keepconfig=(keep_avail and http.formvalue("keepcfg") == "1")
 263                 } )
 264         end
 265 end