modules/admin-mini/luasrc/controller/mini/system.lua

   1 --[[
   2 LuCI - Lua Configuration Interface
   3
   4 Copyright 2008 Steven Barth <steven@midlink.org>
   5 Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
   6
   7 Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 $Id$
  14 ]]--
  15
  16 module("luci.controller.mini.system", package.seeall)
  17
  18 function index()
  19         luci.i18n.loadc("admin-core")
  20         local i18n = luci.i18n.translate
  21
  22         entry({"mini", "system"}, alias("mini", "system", "index"), i18n("system"), 40).index = true
  23         entry({"mini", "system", "index"}, cbi("mini/system", {autoapply=true}), i18n("general"), 1)
  24         entry({"mini", "system", "passwd"}, form("mini/passwd"), i18n("a_s_changepw"), 10)
  25         entry({"mini", "system", "backup"}, call("action_backup"), i18n("a_s_backup"), 80)
  26         entry({"mini", "system", "upgrade"}, call("action_upgrade"), i18n("admin_upgrade"), 90)
  27         entry({"mini", "system", "reboot"}, call("action_reboot"), i18n("reboot"), 100)
  28 end
  29
  30 function action_backup()
  31         local reset_avail = os.execute([[grep '"rootfs_data"' /proc/mtd >/dev/null 2>&1]]) == 0
  32         local restore_cmd = "gunzip | tar -xC/ >/dev/null 2>&1"
  33         local backup_cmd  = "tar -c %s | gzip 2>/dev/null"
  34
  35         local restore_fpi
  36         luci.http.setfilehandler(
  37                 function(meta, chunk, eof)
  38                         if not restore_fpi then
  39                                 restore_fpi = io.popen(restore_cmd, "w")
  40                         end
  41                         if chunk then
  42                                 restore_fpi:write(chunk)
  43                         end
  44                         if eof then
  45                                 restore_fpi:close()
  46                         end
  47                 end
  48         )
  49
  50         local upload = luci.http.formvalue("archive")
  51         local backup = luci.http.formvalue("backup")
  52         local reset  = reset_avail and luci.http.formvalue("reset")
  53
  54         if upload and #upload > 0 then
  55                 luci.template.render("mini/applyreboot")
  56                 luci.sys.reboot()
  57         elseif backup then
  58                 luci.util.perror(backup_cmd:format(_keep_pattern()))
  59                 local backup_fpi = io.popen(backup_cmd:format(_keep_pattern()), "r")
  60                 luci.http.header('Content-Disposition', 'attachment; filename="backup-%s-%s.tar.gz"' % {
  61                         luci.sys.hostname(), os.date("%Y-%m-%d")})
  62                 luci.http.prepare_content("application/x-targz")
  63                 luci.ltn12.pump.all(luci.ltn12.source.file(backup_fpi), luci.http.write)
  64         elseif reset then
  65                 luci.template.render("mini/applyreboot")
  66                 luci.util.exec("mtd -r erase rootfs_data")
  67         else
  68                 luci.template.render("mini/backup", {reset_avail = reset_avail})
  69         end
  70 end
  71
  72 function action_reboot()
  73         local reboot = luci.http.formvalue("reboot")
  74         luci.template.render("mini/reboot", {reboot=reboot})
  75         if reboot then
  76                 luci.sys.reboot()
  77         end
  78 end
  79
  80 function action_upgrade()
  81         require("luci.model.uci")
  82
  83         local tmpfile = "/tmp/firmware.img"
  84
  85         local function image_supported()
  86                 -- XXX: yay...
  87                 return ( 0 == os.execute(
  88                         ". /etc/functions.sh; " ..
  89                         "include /lib/upgrade; " ..
  90                         "platform_check_image %q >/dev/null"
  91                                 % tmpfile
  92                 ) )
  93         end
  94
  95         local function image_checksum()
  96                 return (luci.sys.exec("md5sum %q" % tmpfile):match("^([^%s]+)"))
  97         end
  98
  99         local function storage_size()
 100                 local size = 0
 101                 if luci.fs.access("/proc/mtd") then
 102                         for l in io.lines("/proc/mtd") do
 103                                 local d, s, e, n = l:match('^([^%s]+)%s+([^%s]+)%s+([^%s]+)%s+"([^%s]+)"')
 104                                 if n == "linux" then
 105                                         size = tonumber(s, 16)
 106                                         break
 107                                 end
 108                         end
 109                 end
 110                 return size
 111         end
 112
 113
 114         -- Install upload handler
 115         local file
 116         luci.http.setfilehandler(
 117                 function(meta, chunk, eof)
 118                         if not luci.fs.access(tmpfile) and not file and chunk and #chunk > 0 then
 119                                 file = io.open(tmpfile, "w")
 120                         end
 121                         if file and chunk then
 122                                 file:write(chunk)
 123                         end
 124                         if file and eof then
 125                                 file:close()
 126                         end
 127                 end
 128         )
 129
 130
 131         -- Determine state
 132         local keep_avail   = true
 133         local step         = tonumber(luci.http.formvalue("step") or 1)
 134         local has_image    = luci.fs.access(tmpfile)
 135         local has_support  = image_supported()
 136         local has_platform = luci.fs.access("/lib/upgrade/platform.sh")
 137         local has_upload   = luci.http.formvalue("image")
 138
 139         -- This does the actual flashing which is invoked inside an iframe
 140         -- so don't produce meaningful errors here because the the
 141         -- previous pages should arrange the stuff as required.
 142         if step == 4 then
 143                 if has_platform and has_image and has_support then
 144                         -- Next line is to bypass luci.http layer
 145                         luci.http.context.eoh = true
 146
 147                         -- Now invoke sysupgrade
 148                         local keepcfg = keep_avail and luci.http.formvalue("keepcfg") == "1"
 149                         os.execute("/sbin/luci-flash %s %q" %{
 150                                 keepcfg and "-k %q" % _keep_pattern() or "", tmpfile
 151                         })
 152
 153                         -- Make sure the device is rebooted
 154                         luci.sys.reboot()
 155                 end
 156
 157
 158         --
 159         -- This is step 1-3, which does the user interaction and
 160         -- image upload.
 161         --
 162
 163         -- Step 1: file upload, error on unsupported image format
 164         elseif not has_image or not has_support or step == 1 then
 165                 -- If there is an image but user has requested step 1
 166                 -- or type is not supported, then remove it.
 167                 if has_image then
 168                         luci.fs.unlink(tmpfile)
 169                 end
 170
 171                 luci.template.render("admin_system/upgrade", {
 172                         step=1,
 173                         bad_image=(has_image and not has_support or false),
 174                         keepavail=keep_avail,
 175                         supported=has_platform
 176                 } )
 177
 178         -- Step 2: present uploaded file, show checksum, confirmation
 179         elseif step == 2 then
 180                 luci.template.render("admin_system/upgrade", {
 181                         step=2,
 182                         checksum=image_checksum(),
 183                         filesize=luci.fs.stat(tmpfile).size,
 184                         flashsize=storage_size(),
 185                         keepconfig=(keep_avail and luci.http.formvalue("keepcfg") == "1")
 186                 } )
 187
 188         -- Step 3: load iframe which calls the actual flash procedure
 189         elseif step == 3 then
 190                 luci.template.render("admin_system/upgrade", {
 191                         step=3,
 192                         keepconfig=(keep_avail and luci.http.formvalue("keepcfg") == "1")
 193                 } )
 194         end
 195 end
 196
 197 function _keep_pattern()
 198         local kpattern = ""
 199         local files = luci.model.uci.cursor():get_all("luci", "flash_keep")
 200         if files then
 201                 kpattern = ""
 202                 for k, v in pairs(files) do
 203                         if k:sub(1,1) ~= "." and luci.fs.glob(v) then
 204                                 kpattern = kpattern .. " " ..  v
 205                         end
 206                 end
 207         end
 208         return kpattern
 209 end