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net.dns: Syntesize type names for the full range

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Otherwise unknown records are identified as A records. This also fixes
various tracebacks unearthed by previous commits and mis-identified
records.

Related to #1056 #976 #819
This commit is contained in:
Kim Alvefur 2018-06-09 15:34:00 +02:00
parent fb63de9331
commit 5ae35f54cc
1 changed files with 5 additions and 4 deletions
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9
net/dns.lua
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@ -86,9 +86,10 @@ local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte
end
local function augment (t) -- - - - - - - - - - - - - - - - - - - - augment
local function augment (t, prefix) -- - - - - - - - - - - - - - - - - augment
local a = {};
for i,s in pairs(t) do
for i = 1, 0xffff do
local s = t[i] or ("%s%d"):format(prefix, i);
a[i] = s;
a[s] = s;
a[string.lower(s)] = s;
@ -119,8 +120,8 @@ dns.types = {
dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' };
dns.type = augment (dns.types);
dns.class = augment (dns.classes);
dns.type = augment (dns.types, "TYPE");
dns.class = augment (dns.classes, "CLASS");
dns.typecode = encode (dns.types);
dns.classcode = encode (dns.classes);