diff options
| -rw-r--r-- | modules/luci-mod-system/luasrc/controller/admin/system.lua | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/modules/luci-mod-system/luasrc/controller/admin/system.lua b/modules/luci-mod-system/luasrc/controller/admin/system.lua index 4e83769ee0..8d9305f4fd 100644 --- a/modules/luci-mod-system/luasrc/controller/admin/system.lua +++ b/modules/luci-mod-system/luasrc/controller/admin/system.lua @@ -319,9 +319,13 @@ function action_backup() end function action_backupmtdblock() - local http = require "luci.http" - local mv = http.formvalue("mtdblockname") - local m, s, n = mv:match('^([^%s]+)/([^%s]+)/([^%s]+)') + local mv = luci.http.formvalue("mtdblockname") or "" + local m, n = mv:match('^([^%s%./"]+)/%d+/(%d+)$') + + if not m and n then + luci.http.status(400, "Bad Request") + return + end local reader = ltn12_popen("dd if=/dev/mtd%s conv=fsync,notrunc 2>/dev/null" % n) |