--- a/net/adns.lua Mon Jan 04 12:00:03 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,91 +0,0 @@
--- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
---
--- This project is MIT/X11 licensed. Please see the
--- COPYING file in the source package for more information.
---
-
-local server = require "net.server";
-local dns = require "net.dns";
-
-local log = require "util.logger".init("adns");
-
-local t_insert, t_remove = table.insert, table.remove;
-local coroutine, tostring, pcall = coroutine, tostring, pcall;
-
-local function dummy_send(sock, data, i, j) return (j-i)+1; end
-
-module "adns"
-
-function lookup(handler, qname, qtype, qclass)
- return coroutine.wrap(function (peek)
- if peek then
- log("debug", "Records for %s already cached, using those...", qname);
- handler(peek);
- return;
- end
- log("debug", "Records for %s not in cache, sending query (%s)...", qname, tostring(coroutine.running()));
- local ok, err = dns.query(qname, qtype, qclass);
- if ok then
- coroutine.yield({ qclass or "IN", qtype or "A", qname, coroutine.running()}); -- Wait for reply
- log("debug", "Reply for %s (%s)", qname, tostring(coroutine.running()));
- end
- if ok then
- ok, err = pcall(handler, dns.peek(qname, qtype, qclass));
- else
- log("error", "Error sending DNS query: %s", err);
- ok, err = pcall(handler, nil, err);
- end
- if not ok then
- log("error", "Error in DNS response handler: %s", tostring(err));
- end
- end)(dns.peek(qname, qtype, qclass));
-end
-
-function cancel(handle, call_handler, reason)
- log("warn", "Cancelling DNS lookup for %s", tostring(handle[3]));
- dns.cancel(handle[1], handle[2], handle[3], handle[4], call_handler);
-end
-
-function new_async_socket(sock, resolver)
- local peername = "<unknown>";
- local listener = {};
- local handler = {};
- local err;
- function listener.onincoming(conn, data)
- if data then
- dns.feed(handler, data);
- end
- end
- function listener.ondisconnect(conn, err)
- if err then
- log("warn", "DNS socket for %s disconnected: %s", peername, err);
- local servers = resolver.server;
- if resolver.socketset[conn] == resolver.best_server and resolver.best_server == #servers then
- log("error", "Exhausted all %d configured DNS servers, next lookup will try %s again", #servers, servers[1]);
- end
-
- resolver:servfail(conn); -- Let the magic commence
- end
- end
- handler, err = server.wrapclient(sock, "dns", 53, listener);
- if not handler then
- return nil, err;
- end
-
- handler.settimeout = function () end
- handler.setsockname = function (_, ...) return sock:setsockname(...); end
- handler.setpeername = function (_, ...) peername = (...); local ret, err = sock:setpeername(...); _:set_send(dummy_send); return ret, err; end
- handler.connect = function (_, ...) return sock:connect(...) end
- --handler.send = function (_, data) _:write(data); return _.sendbuffer and _.sendbuffer(); end
- handler.send = function (_, data)
- log("debug", "Sending DNS query to %s", peername);
- return sock:send(data);
- end
- return handler;
-end
-
-dns.socket_wrapper_set(new_async_socket);
-
-return _M;