From d04f667383ec2894a5ecefde7ad9284d07563a67 Mon Sep 17 00:00:00 2001 From: Hannu Nyman Date: Wed, 10 May 2017 19:06:10 +0300 Subject: luci-app-statistics: check that uci config sections exist A missing or faulty luci_statistics config file may prevent LuCI access completely already at the login phase as the statistics config is parsed already then. The error is like: .../statistics/datatree.lua:16: attempt to index upvalue 'sections' (a nil value) User may be completely locked out of LuCI until he figures out the need to have a proper luci_statistics config file. Prevent the error by checking for the existence of the uci config sections before trying to use values from them. Signed-off-by: Hannu Nyman --- .../luci-app-statistics/luasrc/statistics/datatree.lua | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'applications') diff --git a/applications/luci-app-statistics/luasrc/statistics/datatree.lua b/applications/luci-app-statistics/luasrc/statistics/datatree.lua index 806b054cb..5176a19a2 100644 --- a/applications/luci-app-statistics/luasrc/statistics/datatree.lua +++ b/applications/luci-app-statistics/luasrc/statistics/datatree.lua @@ -13,9 +13,17 @@ local sections = uci:get_all("luci_statistics") Instance = util.class() function Instance.__init__( self, host ) - self._host = host or sections.collectd.Hostname or sys.hostname() - self._libdir = sections.collectd.PluginDir or "/usr/lib/collectd" - self._rrddir = sections.collectd_rrdtool.DataDir or "/tmp/rrd" + self._host = host or sys.hostname() + self._libdir = "/usr/lib/collectd" + self._rrddir = "/tmp/rrd" + + if sections and sections.collectd then + self._host = host or sections.collectd.Hostname or sys.hostname() + self._libdir = sections.collectd.PluginDir or "/usr/lib/collectd" + end + if sections and sections.collectd_rrdtool then + self._rrddir = sections.collectd_rrdtool.DataDir or "/tmp/rrd" + end self._libdir = self._libdir:gsub("/$","") self._rrddir = self._rrddir:gsub("/$","") -- cgit v1.2.3