luci-base: fallback to a simple text editor if uci config cannot be loaded

[project/luci.git] / modules / luci-base / luasrc / cbi.lua

diff --git a/modules/luci-base/luasrc/cbi.lua b/modules/luci-base/luasrc/cbi.lua
index 34de44a..7c5944b 100644 (file)
--- a/modules/luci-base/luasrc/cbi.lua
+++ b/modules/luci-base/luasrc/cbi.lua
@@ -12,6 +12,7 @@ require("luci.http")
 local fs         = require("nixio.fs")
 local uci        = require("luci.model.uci")
 local datatypes  = require("luci.cbi.datatypes")
+local dispatcher = require("luci.dispatcher")
 local class      = util.class
 local instanceof = util.instanceof
 
@@ -307,8 +308,29 @@ function Map.__init__(self, config, ...)
 
        self.changed = false
 
-       if not self.uci:load(self.config) then
-               error("Unable to read UCI data: " .. self.config)
+       local path = "%s/%s" %{ self.uci:get_confdir(), self.config }
+       if fs.stat(path, "type") ~= "reg" then
+               fs.writefile(path, "")
+       end
+
+       local ok, err = self.uci:load(self.config)
+       if not ok then
+               local url = dispatcher.build_url(unpack(dispatcher.context.request))
+               local source = self:formvalue("cbi.source")
+               if type(source) == "string" then
+                       fs.writefile(path, source:gsub("\r\n", "\n"))
+                       ok, err = self.uci:load(self.config)
+                       if ok then
+                               luci.http.redirect(url)
+                       end
+               end
+       end
+
+       if not ok then
+               self.template   = "cbi/error"
+               self.error      = err
+               self.source     = fs.readfile(path) or ""
+               self.pageaction = false
        end
 end