Don't crash if a DNS-RR mirror fails to resolve.

1 files changed, 16 insertions, 14 deletions

diff --git a/apt-panopticon.lua b/apt-panopticon.lua
index 06a051e..a524260 100755
--- a/apt-panopticon.lua
+++ b/apt-panopticon.lua
@@ -199,24 +199,26 @@ gatherIPs = function (host)
                 gatherIPs(m.FQDN)
                 IP[host][m.FQDN] = IP[m.FQDN]
                 -- Strip them out so we don't test them twice.
-                for l, n in pairs(IP[m.FQDN]) do
-                    if type(n) == 'table' then
-                        for h, p in pairs(n) do
+                if nil ~= IP[m.FQDN] then
+                    for l, n in pairs(IP[m.FQDN]) do
+                        if type(n) == 'table' then
+                            for h, p in pairs(n) do
+                                for j, o in pairs(IP[host]['deb.roundr.devuan.org']) do
+                                    if h == j then IP[host][m.FQDN][l][h] = nil end
+                                end
+                                o = 0
+                                for j in pairs(IP[host][m.FQDN][l]) do o = o + 1 end
+                                if 0 == o then IP[host][m.FQDN][l] = nil end
+                            end
+                        else
                             for j, o in pairs(IP[host]['deb.roundr.devuan.org']) do
-                                if h == j then IP[host][m.FQDN][l][h] = nil end
+                                if l == j then IP[host][m.FQDN][l] = nil end
                             end
-                            o = 0
-                            for j in pairs(IP[host][m.FQDN][l]) do o = o + 1 end
-                            if 0 == o then IP[host][m.FQDN][l] = nil end
-                        end
-                    else
-                        for j, o in pairs(IP[host]['deb.roundr.devuan.org']) do
-                            if l == j then IP[host][m.FQDN][l] = nil end
                         end
+                        o = 0
+                        for j in pairs(IP[host][m.FQDN]) do o = o + 1 end
+                        if 0 == o then IP[host][m.FQDN] = nil end
                     end
-                    o = 0
-                    for j in pairs(IP[host][m.FQDN]) do o = o + 1 end
-                    if 0 == o then IP[host][m.FQDN] = nil end
                 end
             end
         end