diff options
| -rw-r--r-- | net/dns.lua | 39 |
1 files changed, 17 insertions, 22 deletions
diff --git a/net/dns.lua b/net/dns.lua index f3d80291..23a453aa 100644 --- a/net/dns.lua +++ b/net/dns.lua @@ -21,8 +21,8 @@ local is_windows = (_ and windows) or os.getenv("WINDIR"); local coroutine, io, math, string, table = coroutine, io, math, string, table; -local ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select = - ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select; +local ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type= + ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type; local ztact = { -- public domain 20080404 lua@ztact.com get = function(parent, ...) @@ -160,29 +160,24 @@ resolver.timeout = default_timeout; local SRV_tostring; +local function default_rr_tostring(rr) + local rr_val = rr.type and rr[rr.type:lower()]; + if type(rr_val) ~= "string" then + return "<UNKNOWN RDATA TYPE>"; + end + return rr_val; +end + +local special_tostrings = { + LOC = resolver.LOC_tostring; + MX = function (rr) return string.format('%2i %s', rr.pref, rr.mx); end; + SRV = SRV_tostring; +}; local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable function rr_metatable.__tostring(rr) - local s0 = string.format('%2s %-5s %6i %-28s', rr.class, rr.type, rr.ttl, rr.name); - local s1 = ''; - if rr.type == 'A' then - s1 = ' '..rr.a; - elseif rr.type == 'MX' then - s1 = string.format(' %2i %s', rr.pref, rr.mx); - elseif rr.type == 'CNAME' then - s1 = ' '..rr.cname; - elseif rr.type == 'LOC' then - s1 = ' '..resolver.LOC_tostring(rr); - elseif rr.type == 'NS' then - s1 = ' '..rr.ns; - elseif rr.type == 'SRV' then - s1 = ' '..SRV_tostring(rr); - elseif rr.type == 'TXT' then - s1 = ' '..rr.txt; - else - s1 = ' <UNKNOWN RDATA TYPE>'; - end - return s0..s1; + local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr); + return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string); end |