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                 elseif luci.fs.access("/proc/partitions") then
 110                         for l in io.lines("/proc/partitions") do
 111                                 local x, y, b, n = l:match('^%s*(%d+)%s+(%d+)%s+([^%s]+)%s+([^%s]+)')
 112                                 if b and n and not n:match('[0-9]') then
 113                                         size = tonumber(b) * 1024
 114                                         break
 115                                 end
 116                         end
 117                 end
 118                 return size
 119         end
 120
 121
 122         -- Install upload handler
 123         local file
 124         luci.http.setfilehandler(
 125                 function(meta, chunk, eof)
 126                         if not luci.fs.access(tmpfile) and not file and chunk and #chunk > 0 then
 127                                 file = io.open(tmpfile, "w")
 128                         end
 129                         if file and chunk then
 130                                 file:write(chunk)
 131                         end
 132                         if file and eof then
 133                                 file:close()
 134                         end
 135                 end
 136         )
 137
 138
 139         -- Determine state
 140         local keep_avail   = true
 141         local step         = tonumber(luci.http.formvalue("step") or 1)
 142         local has_image    = luci.fs.access(tmpfile)
 143         local has_support  = image_supported()
 144         local has_platform = luci.fs.access("/lib/upgrade/platform.sh")
 145         local has_upload   = luci.http.formvalue("image")
 146
 147         -- This does the actual flashing which is invoked inside an iframe
 148         -- so don't produce meaningful errors here because the the
 149         -- previous pages should arrange the stuff as required.
 150         if step == 4 then
 151                 if has_platform and has_image and has_support then
 152                         -- Now invoke sysupgrade
 153                         local keepcfg = keep_avail and luci.http.formvalue("keepcfg") == "1"
 154                         local fd = io.popen("/sbin/luci-flash %s %q" %{
 155                                 keepcfg and "-k %q" % _keep_pattern() or "", tmpfile
 156                         })
 157
 158                         if fd then
 159                                 while true do
 160                                         local ln = fd:read("*l")
 161                                         if not ln then break end
 162                                         luci.http.write(ln)
 163                                 end
 164                                 fd:close()
 165                         end
 166
 167                         -- Make sure the device is rebooted
 168                         luci.sys.reboot()
 169                 end
 170
 171
 172         --
 173         -- This is step 1-3, which does the user interaction and
 174         -- image upload.
 175         --
 176
 177         -- Step 1: file upload, error on unsupported image format
 178         elseif not has_image or not has_support or step == 1 then
 179                 -- If there is an image but user has requested step 1
 180                 -- or type is not supported, then remove it.
 181                 if has_image then
 182                         luci.fs.unlink(tmpfile)
 183                 end
 184
 185                 luci.template.render("admin_system/upgrade", {
 186                         step=1,
 187                         bad_image=(has_image and not has_support or false),
 188                         keepavail=keep_avail,
 189                         supported=has_platform
 190                 } )
 191
 192         -- Step 2: present uploaded file, show checksum, confirmation
 193         elseif step == 2 then
 194                 luci.template.render("admin_system/upgrade", {
 195                         step=2,
 196                         checksum=image_checksum(),
 197                         filesize=luci.fs.stat(tmpfile).size,
 198                         flashsize=storage_size(),
 199                         keepconfig=(keep_avail and luci.http.formvalue("keepcfg") == "1")
 200                 } )
 201
 202         -- Step 3: load iframe which calls the actual flash procedure
 203         elseif step == 3 then
 204                 luci.template.render("admin_system/upgrade", {
 205                         step=3,
 206                         keepconfig=(keep_avail and luci.http.formvalue("keepcfg") == "1")
 207                 } )
 208         end
 209 end
 210
 211 function _keep_pattern()
 212         local kpattern = ""
 213         local files = luci.model.uci.cursor():get_all("luci", "flash_keep")
 214         if files then
 215                 kpattern = ""
 216                 for k, v in pairs(files) do
 217                         if k:sub(1,1) ~= "." and luci.fs.glob(v) then
 218                                 kpattern = kpattern .. " " ..  v
 219                         end
 220                 end
 221         end
 222         return kpattern
 223 end