libs/sys: workaround broken entries in /proc/net/ipv6_route, observed on brcm-2.4

diff --git a/libs/sys/luasrc/sys.lua b/libs/sys/luasrc/sys.lua
index 573d730245bd6c807701d4d48707b70a545d7d68..b8a1c5041f75b7ada5431fe3ee8287d69ba35feb 100644 (file)
--- a/libs/sys/luasrc/sys.lua
+++ b/libs/sys/luasrc/sys.lua
@@ -451,35 +451,42 @@ function net.routes6(callback)
                                "([a-f0-9]+) +([^%s]+)"
                        )
 
                                "([a-f0-9]+) +([^%s]+)"
                        )
 

-                       src_ip = luci.ip.Hex(
-                               src_ip, tonumber(src_prefix, 16), luci.ip.FAMILY_INET6, false
-                       )
-
-                       dst_ip = luci.ip.Hex(
-                               dst_ip, tonumber(dst_prefix, 16), luci.ip.FAMILY_INET6, false
-                       )
-
-                       nexthop = luci.ip.Hex( nexthop, 128, luci.ip.FAMILY_INET6, false )
-
-                       local rt = {
-                               source   = src_ip,
-                               dest     = dst_ip,
-                               nexthop  = nexthop,
-                               metric   = tonumber(metric, 16),
-                               refcount = tonumber(refcnt, 16),
-                               usecount = tonumber(usecnt, 16),
-                               flags    = tonumber(flags, 16),
-                               device   = dev,
-
-                               -- lua number is too small for storing the metric
-                               -- add a metric_raw field with the original content
-                               metric_raw = metric
-                       }
+                       if dst_ip and dst_prefix and
+                          src_ip and src_prefix and
+                          nexthop and metric and
+                          refcnt and usecnt and
+                          flags and dev
+                       then
+                               src_ip = luci.ip.Hex(
+                                       src_ip, tonumber(src_prefix, 16), luci.ip.FAMILY_INET6, false
+                               )
+
+                               dst_ip = luci.ip.Hex(
+                                       dst_ip, tonumber(dst_prefix, 16), luci.ip.FAMILY_INET6, false
+                               )
+
+                               nexthop = luci.ip.Hex( nexthop, 128, luci.ip.FAMILY_INET6, false )
+
+                               local rt = {
+                                       source   = src_ip,
+                                       dest     = dst_ip,
+                                       nexthop  = nexthop,
+                                       metric   = tonumber(metric, 16),
+                                       refcount = tonumber(refcnt, 16),
+                                       usecount = tonumber(usecnt, 16),
+                                       flags    = tonumber(flags, 16),
+                                       device   = dev,
+
+                                       -- lua number is too small for storing the metric
+                                       -- add a metric_raw field with the original content
+                                       metric_raw = metric
+                               }

 
 

-                       if callback then
-                               callback(rt)
-                       else
-                               routes[#routes+1] = rt
+                               if callback then
+                                       callback(rt)
+                               else
+                                       routes[#routes+1] = rt
+                               end

                        end
                end
 
                        end
                end