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