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-rw-r--r--net/adns.lua50
-rw-r--r--net/connlisteners.lua18
-rw-r--r--net/dns.lua59
-rw-r--r--net/http.lua47
-rw-r--r--net/httpclient_listener.lua6
-rw-r--r--net/httpserver.lua71
-rw-r--r--net/httpserver_listener.lua6
-rw-r--r--net/multiplex_listener.lua46
-rw-r--r--net/server.lua963
-rw-r--r--net/server_event.lua845
-rw-r--r--net/server_select.lua891
-rw-r--r--net/xmppclient_listener.lua24
-rw-r--r--net/xmppcomponent_listener.lua15
-rw-r--r--net/xmppserver_listener.lua49
14 files changed, 2022 insertions, 1068 deletions
diff --git a/net/adns.lua b/net/adns.lua
index bc38040b..0121881a 100644
--- a/net/adns.lua
+++ b/net/adns.lua
@@ -14,6 +14,8 @@ 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)
@@ -43,35 +45,39 @@ function cancel(handle, call_handler)
end
function new_async_socket(sock, resolver)
- local newconn, peername = {}, "<unknown>";
+ local peername = "<unknown>";
local listener = {};
- function listener.incoming(conn, data)
- dns.feed(sock, data);
- end
- function listener.disconnect(conn, err)
- log("warn", "DNS socket for %s disconnected: %s", peername, err);
- local servers = resolver.server;
- if resolver.socketset[newconn.handler] == 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]);
+ local handler = {};
+ 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
+ resolver:servfail(conn); -- Let the magic commence
+ end
end
- newconn.handler, newconn._socket = server.wrapclient(sock, "dns", 53, listener);
- if not newconn.handler then
+ handler = server.wrapclient(sock, "dns", 53, listener);
+ if not handler then
log("warn", "handler is nil");
end
- if not newconn._socket then
- log("warn", "socket is nil");
- end
- newconn.handler.settimeout = function () end
- newconn.handler.setsockname = function (_, ...) return sock:setsockname(...); end
- newconn.handler.setpeername = function (_, ...) peername = (...); local ret = sock:setpeername(...); _.setsend(sock.send); return ret; end
- newconn.handler.connect = function (_, ...) return sock:connect(...) end
- newconn.handler.send = function (_, data) _.write(data); return _.sendbuffer(); end
- return newconn.handler;
+
+ handler.settimeout = function () end
+ handler.setsockname = function (_, ...) return sock:setsockname(...); end
+ handler.setpeername = function (_, ...) peername = (...); local ret = sock:setpeername(...); _:set_send(dummy_send); return ret; end
+ handler.connect = function (_, ...) return sock:connect(...) end
+ --handler.send = function (_, data) _:write(data); return _.sendbuffer and _.sendbuffer(); end
+ handler.send = function (_, data) return sock:send(data); end
+ return handler;
end
-dns:socket_wrapper_set(new_async_socket);
+dns.socket_wrapper_set(new_async_socket);
return _M;
diff --git a/net/connlisteners.lua b/net/connlisteners.lua
index 230d92a4..ee54f049 100644
--- a/net/connlisteners.lua
+++ b/net/connlisteners.lua
@@ -53,17 +53,17 @@ function start(name, udata)
error("No such connection module: "..name.. (err and (" ("..err..")") or ""), 0);
end
- if udata then
- if (udata.type == "ssl" or udata.type == "tls") and not udata.ssl then
- error("No SSL context supplied for a "..tostring(udata.type):upper().." connection!", 0);
- elseif udata.ssl and udata.type == "tcp" then
- error("SSL context supplied for a TCP connection!", 0);
- end
+ local interface = (udata and udata.interface) or h.default_interface or "*";
+ local port = (udata and udata.port) or h.default_port or error("Can't start listener "..name.." because no port was specified, and it has no default port", 0);
+ local mode = (udata and udata.mode) or h.default_mode or 1;
+ local ssl = (udata and udata.ssl) or nil;
+ local autossl = udata and udata.type == "ssl";
+
+ if autossl and not ssl then
+ return nil, "no ssl context";
end
- return server.addserver(h,
- (udata and udata.port) or h.default_port or error("Can't start listener "..name.." because no port was specified, and it has no default port", 0),
- (udata and udata.interface) or h.default_interface or "*", (udata and udata.mode) or h.default_mode or 1, (udata and udata.ssl) or nil, 99999999, udata and udata.type == "ssl");
+ return server.addserver(interface, port, h, mode, autossl and ssl or nil);
end
return _M;
diff --git a/net/dns.lua b/net/dns.lua
index c50e893c..ca5f3c62 100644
--- a/net/dns.lua
+++ b/net/dns.lua
@@ -183,7 +183,7 @@ end
function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random
- math.randomseed(10000*socket.gettime());
+ math.randomseed(math.floor(10000*socket.gettime()));
dns.random = math.random;
return dns.random(...);
end
@@ -594,17 +594,18 @@ end
function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember
--print ('remember', type, rr.class, rr.type, rr.name)
+ local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class);
if type ~= '*' then
- type = rr.type;
- local all = get(self.cache, rr.class, '*', rr.name);
+ type = qtype;
+ local all = get(self.cache, qclass, '*', qname);
--print('remember all', all);
if all then append(all, rr); end
end
self.cache = self.cache or setmetatable({}, cache_metatable);
- local rrs = get(self.cache, rr.class, type, rr.name) or
- set(self.cache, rr.class, type, rr.name, setmetatable({}, rrs_metatable));
+ local rrs = get(self.cache, qclass, type, qname) or
+ set(self.cache, qclass, type, qname, setmetatable({}, rrs_metatable));
append(rrs, rr);
if type == 'MX' then self.unsorted[rrs] = true; end
@@ -726,7 +727,7 @@ function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive
local packet = sock:receive();
if packet then
response = self:decode(packet);
- if response and self.active[response.header.id]
+ if response and self.active[response.header.id]
and self.active[response.header.id][response.question.raw] then
--print('received response');
--self.print(response);
@@ -745,7 +746,7 @@ function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive
if not next(self.active) then self:closeall(); end
-- was the query on the wanted list?
- local q = response.question;
+ local q = response.question[1];
local cos = get(self.wanted, q.class, q.type, q.name);
if cos then
for co in pairs(cos) do
@@ -768,21 +769,18 @@ function resolver:feed(sock, packet)
self.time = socket.gettime();
local response = self:decode(packet);
- if response then
+ if response and self.active[response.header.id]
+ and self.active[response.header.id][response.question.raw] then
--print('received response');
--self.print(response);
- for i,section in pairs({ 'answer', 'authority', 'additional' }) do
- for j,rr in pairs(response[section]) do
- self:remember(rr, response.question[1].type);
- end
+ for j,rr in pairs(response.answer) do
+ self:remember(rr, response.question[1].type);
end
-- retire the query
local queries = self.active[response.header.id];
- if queries[response.question.raw] then
- queries[response.question.raw] = nil;
- end
+ queries[response.question.raw] = nil;
if not next(queries) then self.active[response.header.id] = nil; end
if not next(self.active) then self:closeall(); end
@@ -915,11 +913,6 @@ end
-- module api ------------------------------------------------------ module api
-local function resolve(func, ...) -- - - - - - - - - - - - - - resolver_get
- return func(dns._resolver, ...);
-end
-
-
function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver
-- this function seems to be redundant with resolver.new ()
@@ -930,37 +923,35 @@ function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver
return r;
end
+local _resolver = dns.resolver();
+dns._resolver = _resolver;
function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup
- return resolve(resolver.lookup, ...);
+ return _resolver:lookup(...);
end
-
function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge
- return resolve(resolver.purge, ...);
+ return _resolver:purge(...);
end
function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek
- return resolve(resolver.peek, ...);
+ return _resolver:peek(...);
end
-
function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query
- return resolve(resolver.query, ...);
+ return _resolver:query(...);
end
-function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - feed
- return resolve(resolver.feed, ...);
+function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed
+ return _resolver:feed(...);
end
-function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel
- return resolve(resolver.cancel, ...);
+function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel
+ return _resolver:cancel(...);
end
-function dns:socket_wrapper_set(...) -- - - - - - - - - socket_wrapper_set
- return resolve(resolver.socket_wrapper_set, ...);
+function dns.socket_wrapper_set(...) -- - - - - - - - - socket_wrapper_set
+ return _resolver:socket_wrapper_set(...);
end
-dns._resolver = dns.resolver();
-
return dns;
diff --git a/net/http.lua b/net/http.lua
index 9d2f9b96..cd969209 100644
--- a/net/http.lua
+++ b/net/http.lua
@@ -17,11 +17,10 @@ local connlisteners_get = require "net.connlisteners".get;
local listener = connlisteners_get("httpclient") or error("No httpclient listener!");
local t_insert, t_concat = table.insert, table.concat;
-local tonumber, tostring, pairs, xpcall, select, debug_traceback, char, format =
+local tonumber, tostring, pairs, xpcall, select, debug_traceback, char, format =
tonumber, tostring, pairs, xpcall, select, debug.traceback, string.char, string.format;
local log = require "util.logger".init("http");
-local print = function () end
module "http"
@@ -30,7 +29,7 @@ function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return char(
local function expectbody(reqt, code)
if reqt.method == "HEAD" then return nil end
- if code == 204 or code == 304 then return nil end
+ if code == 204 or code == 304 or code == 301 then return nil end
if code >= 100 and code < 200 then return nil end
return 1
end
@@ -43,6 +42,7 @@ local function request_reader(request, data, startpos)
elseif request.state ~= "completed" then
-- Error.. connection was closed prematurely
request.callback("connection-closed", 0, request);
+ return;
end
destroy_request(request);
request.body = nil;
@@ -50,7 +50,7 @@ local function request_reader(request, data, startpos)
return;
end
if request.state == "body" and request.state ~= "completed" then
- print("Reading body...")
+ log("debug", "Reading body...")
if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.responseheaders["content-length"]); end
if startpos then
data = data:sub(startpos, -1)
@@ -67,42 +67,54 @@ local function request_reader(request, data, startpos)
request.body = nil;
request.state = "completed";
else
- print("", "Have "..request.havebodylength.." bytes out of "..request.bodylength);
+ log("debug", "Have "..request.havebodylength.." bytes out of "..request.bodylength);
end
end
elseif request.state == "headers" then
- print("Reading headers...")
+ log("debug", "Reading headers...")
local pos = startpos;
- local headers = request.responseheaders or {};
+ local headers, headers_complete = request.responseheaders;
+ if not headers then
+ headers = {};
+ request.responseheaders = headers;
+ end
for line in data:sub(startpos, -1):gmatch("(.-)\r\n") do
startpos = startpos + #line + 2;
local k, v = line:match("(%S+): (.+)");
if k and v then
headers[k:lower()] = v;
- print("Header: "..k:lower().." = "..v);
+ --log("debug", "Header: "..k:lower().." = "..v);
elseif #line == 0 then
- request.responseheaders = headers;
+ headers_complete = true;
break;
else
- print("Unhandled header line: "..line);
+ log("warn", "Unhandled header line: "..line);
end
end
+ if not headers_complete then return; end
-- Reached the end of the headers
- request.state = "body";
+ if not expectbody(request, request.code) then
+ request.callback(nil, request.code, request);
+ return;
+ end
+ request.state = "body";
if #data > startpos then
return request_reader(request, data, startpos);
end
elseif request.state == "status" then
- print("Reading status...")
+ log("debug", "Reading status...")
local http, code, text, linelen = data:match("^HTTP/(%S+) (%d+) (.-)\r\n()", startpos);
code = tonumber(code);
if not code then
- return request.callback("invalid-status-line", 0, request);
+ log("warn", "Invalid HTTP status line, telling callback then closing");
+ local ret = request.callback("invalid-status-line", 0, request);
+ destroy_request(request);
+ return ret;
end
request.code, request.responseversion = code, http;
- if request.onlystatus or not expectbody(request, code) then
+ if request.onlystatus then
if request.callback then
request.callback(nil, code, request);
end
@@ -152,7 +164,7 @@ function request(u, ex, callback)
end
req.handler, req.conn = server.wrapclient(socket.tcp(), req.host, req.port or 80, listener, "*a");
- req.write = req.handler.write;
+ req.write = function (...) return req.handler:write(...); end
req.conn:settimeout(0);
local ok, err = req.conn:connect(req.host, req.port or 80);
if not ok and err ~= "timeout" then
@@ -199,8 +211,9 @@ end
function destroy_request(request)
if request.conn then
- request.handler.close()
- listener.disconnect(request.conn, "closed");
+ request.conn = nil;
+ request.handler:close()
+ listener.ondisconnect(request.handler, "closed");
end
end
diff --git a/net/httpclient_listener.lua b/net/httpclient_listener.lua
index 69b7946b..5bed461d 100644
--- a/net/httpclient_listener.lua
+++ b/net/httpclient_listener.lua
@@ -15,7 +15,7 @@ local buffers = {}; -- Buffers of partial lines
local httpclient = { default_port = 80, default_mode = "*a" };
-function httpclient.listener(conn, data)
+function httpclient.onincoming(conn, data)
local request = requests[conn];
if not request then
@@ -28,9 +28,9 @@ function httpclient.listener(conn, data)
end
end
-function httpclient.disconnect(conn, err)
+function httpclient.ondisconnect(conn, err)
local request = requests[conn];
- if request then
+ if request and err ~= "closed" then
request:reader(nil);
end
requests[conn] = nil;
diff --git a/net/httpserver.lua b/net/httpserver.lua
index ddb4475c..79705e6f 100644
--- a/net/httpserver.lua
+++ b/net/httpserver.lua
@@ -36,42 +36,38 @@ end
local function send_response(request, response)
-- Write status line
local resp;
- if response.body then
- local body = tostring(response.body);
+ if response.body or response.headers then
+ local body = response.body and tostring(response.body);
log("debug", "Sending response to %s", request.id);
- resp = { "HTTP/1.0 ", response.status or "200 OK", "\r\n"};
+ resp = { "HTTP/1.0 "..(response.status or "200 OK").."\r\n" };
local h = response.headers;
if h then
for k, v in pairs(h) do
- t_insert(resp, k);
- t_insert(resp, ": ");
- t_insert(resp, v);
- t_insert(resp, "\r\n");
+ t_insert(resp, k..": "..v.."\r\n");
end
end
- if not (h and h["Content-Length"]) then
- t_insert(resp, "Content-Length: ");
- t_insert(resp, #body);
- t_insert(resp, "\r\n");
+ if body and not (h and h["Content-Length"]) then
+ t_insert(resp, "Content-Length: "..#body.."\r\n");
end
t_insert(resp, "\r\n");
- if request.method ~= "HEAD" then
+ if body and request.method ~= "HEAD" then
t_insert(resp, body);
end
+ request.write(t_concat(resp));
else
-- Response we have is just a string (the body)
log("debug", "Sending 200 response to %s", request.id or "<none>");
- resp = { "HTTP/1.0 200 OK\r\n" };
- t_insert(resp, "Connection: close\r\n");
- t_insert(resp, "Content-Length: ");
- t_insert(resp, #response);
- t_insert(resp, "\r\n\r\n");
+ local resp = "HTTP/1.0 200 OK\r\n"
+ .. "Connection: close\r\n"
+ .. "Content-Type: text/html\r\n"
+ .. "Content-Length: "..#response.."\r\n"
+ .. "\r\n"
+ .. response;
- t_insert(resp, response);
+ request.write(resp);
end
- request.write(t_concat(resp));
if not request.stayopen then
request:destroy();
end
@@ -146,22 +142,29 @@ local function request_reader(request, data, startpos)
elseif request.state == "headers" then
log("debug", "Reading headers...")
local pos = startpos;
- local headers = request.headers or {};
+ local headers, headers_complete = request.headers;
+ if not headers then
+ headers = {};
+ request.headers = headers;
+ end
+
for line in data:gmatch("(.-)\r\n") do
startpos = (startpos or 1) + #line + 2;
local k, v = line:match("(%S+): (.+)");
if k and v then
headers[k:lower()] = v;
--- log("debug", "Header: "..k:lower().." = "..v);
+ --log("debug", "Header: '"..k:lower().."' = '"..v.."'");
elseif #line == 0 then
- request.headers = headers;
+ headers_complete = true;
break;
else
log("debug", "Unhandled header line: "..line);
end
end
- if not expectbody(request) then
+ if not headers_complete then return; end
+
+ if not expectbody(request) then
call_callback(request);
return;
end
@@ -175,14 +178,17 @@ local function request_reader(request, data, startpos)
log("debug", "Reading request line...")
local method, path, http, linelen = data:match("^(%S+) (%S+) HTTP/(%S+)\r\n()", startpos);
if not method then
- return call_callback(request, "invalid-status-line");
+ log("warn", "Invalid HTTP status line, telling callback then closing");
+ local ret = call_callback(request, "invalid-status-line");
+ request:destroy();
+ return ret;
end
request.method, request.path, request.httpversion = method, path, http;
request.url = url_parse(request.path);
- log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
+ log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler:serverport());
if request.onlystatus then
if not call_callback(request) then
@@ -200,17 +206,17 @@ end
-- The default handler for requests
default_handler = function (method, body, request)
- log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
- return { status = "404 Not Found",
+ log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler:serverport());
+ return { status = "404 Not Found",
headers = { ["Content-Type"] = "text/html" },
body = "<html><head><title>Page Not Found</title></head><body>Not here :(</body></html>" };
end
function new_request(handler)
- return { handler = handler, conn = handler.socket,
- write = handler.write, state = "request",
- server = http_servers[handler.serverport()],
+ return { handler = handler, conn = handler,
+ write = function (...) return handler:write(...); end, state = "request",
+ server = http_servers[handler:serverport()],
send = send_response,
destroy = destroy_request,
id = tostring{}:match("%x+$")
@@ -228,9 +234,9 @@ function destroy_request(request)
else
log("debug", "Request has no destroy callback");
end
- request.handler.close()
+ request.handler:close()
if request.conn then
- listener.disconnect(request.handler, "closed");
+ listener.ondisconnect(request.conn, "closed");
end
end
end
@@ -276,6 +282,7 @@ function new_from_config(ports, handle_request, default_options)
if ssl then
ssl.mode = "server";
ssl.protocol = "sslv23";
+ ssl.options = "no_sslv2";
end
new{ port = port, interface = interface,
diff --git a/net/httpserver_listener.lua b/net/httpserver_listener.lua
index 455191fb..6933b4fe 100644
--- a/net/httpserver_listener.lua
+++ b/net/httpserver_listener.lua
@@ -16,7 +16,7 @@ local requests = {}; -- Open requests
local httpserver = { default_port = 80, default_mode = "*a" };
-function httpserver.listener(conn, data)
+function httpserver.onincoming(conn, data)
local request = requests[conn];
if not request then
@@ -24,7 +24,7 @@ function httpserver.listener(conn, data)
requests[conn] = request;
-- If using HTTPS, request is secure
- if conn.ssl() then
+ if conn:ssl() then
request.secure = true;
end
end
@@ -34,7 +34,7 @@ function httpserver.listener(conn, data)
end
end
-function httpserver.disconnect(conn, err)
+function httpserver.ondisconnect(conn, err)
local request = requests[conn];
if request and not request.destroyed then
request.conn = nil;
diff --git a/net/multiplex_listener.lua b/net/multiplex_listener.lua
new file mode 100644
index 00000000..bf193ad8
--- /dev/null
+++ b/net/multiplex_listener.lua
@@ -0,0 +1,46 @@
+
+local connlisteners_register = require "net.connlisteners".register;
+local connlisteners_get = require "net.connlisteners".get;
+
+local httpserver_listener = connlisteners_get("httpserver");
+local xmppserver_listener = connlisteners_get("xmppserver");
+local xmppclient_listener = connlisteners_get("xmppclient");
+local xmppcomponent_listener = connlisteners_get("xmppcomponent");
+
+local server = { default_mode = "*a" };
+
+local buffer = {};
+
+function server.onincoming(conn, data)
+ if not data then return; end
+ local buf = buffer[conn];
+ buffer[conn] = nil;
+ buf = buf and buf..data or data;
+ if buf:match("^[a-zA-Z]") then
+ local listener = httpserver_listener;
+ conn:setlistener(listener);
+ listener.onincoming(conn, buf);
+ elseif buf:match(">") then
+ local listener;
+ local xmlns = buf:match("%sxmlns%s*=%s*['\"]([^'\"]*)");
+ if xmlns == "jabber:server" then
+ listener = xmppserver_listener;
+ elseif xmlns == "jabber:component:accept" then
+ listener = xmppcomponent_listener;
+ else
+ listener = xmppclient_listener;
+ end
+ conn:setlistener(listener);
+ listener.onincoming(conn, buf);
+ elseif #buf > 1024 then
+ conn:close();
+ else
+ buffer[conn] = buf;
+ end
+end
+
+function server.ondisconnect(conn, err)
+ buffer[conn] = nil; -- warn if no buffer?
+end
+
+connlisteners_register("multiplex", server);
diff --git a/net/server.lua b/net/server.lua
index 6ab8ce91..971e1766 100644
--- a/net/server.lua
+++ b/net/server.lua
@@ -1,914 +1,49 @@
---
--- server.lua by blastbeat of the luadch project
--- Re-used here under the MIT/X Consortium License
---
--- Modifications (C) 2008-2009 Matthew Wild, Waqas Hussain
---
-
--- // wrapping luadch stuff // --
-
-local use = function( what )
- return _G[ what ]
-end
-local clean = function( tbl )
- for i, k in pairs( tbl ) do
- tbl[ i ] = nil
- end
-end
-
-local log, table_concat = require ("util.logger").init("socket"), table.concat;
-local out_put = function (...) return log("debug", table_concat{...}); end
-local out_error = function (...) return log("warn", table_concat{...}); end
-local mem_free = collectgarbage
-
-----------------------------------// DECLARATION //--
-
---// constants //--
-
-local STAT_UNIT = 1 -- byte
-
---// lua functions //--
-
-local type = use "type"
-local pairs = use "pairs"
-local ipairs = use "ipairs"
-local tostring = use "tostring"
-local collectgarbage = use "collectgarbage"
-
---// lua libs //--
-
-local os = use "os"
-local table = use "table"
-local string = use "string"
-local coroutine = use "coroutine"
-
---// lua lib methods //--
-
-local os_time = os.time
-local os_difftime = os.difftime
-local table_concat = table.concat
-local table_remove = table.remove
-local string_len = string.len
-local string_sub = string.sub
-local coroutine_wrap = coroutine.wrap
-local coroutine_yield = coroutine.yield
-
---// extern libs //--
-
-local luasec = select( 2, pcall( require, "ssl" ) )
-local luasocket = require "socket"
-
---// extern lib methods //--
-
-local ssl_wrap = ( luasec and luasec.wrap )
-local socket_bind = luasocket.bind
-local socket_sleep = luasocket.sleep
-local socket_select = luasocket.select
-local ssl_newcontext = ( luasec and luasec.newcontext )
-
---// functions //--
-
-local id
-local loop
-local stats
-local idfalse
-local addtimer
-local closeall
-local addserver
-local getserver
-local wrapserver
-local getsettings
-local closesocket
-local removesocket
-local removeserver
-local changetimeout
-local wrapconnection
-local changesettings
-
---// tables //--
-
-local _server
-local _readlist
-local _timerlist
-local _sendlist
-local _socketlist
-local _closelist
-local _readtimes
-local _writetimes
-
---// simple data types //--
-
-local _
-local _readlistlen
-local _sendlistlen
-local _timerlistlen
-
-local _sendtraffic
-local _readtraffic
-
-local _selecttimeout
-local _sleeptime
-
-local _starttime
-local _currenttime
-
-local _maxsendlen
-local _maxreadlen
-
-local _checkinterval
-local _sendtimeout
-local _readtimeout
-
-local _cleanqueue
-
-local _timer
-
-local _maxclientsperserver
-
-----------------------------------// DEFINITION //--
-
-_server = { } -- key = port, value = table; list of listening servers
-_readlist = { } -- array with sockets to read from
-_sendlist = { } -- arrary with sockets to write to
-_timerlist = { } -- array of timer functions
-_socketlist = { } -- key = socket, value = wrapped socket (handlers)
-_readtimes = { } -- key = handler, value = timestamp of last data reading
-_writetimes = { } -- key = handler, value = timestamp of last data writing/sending
-_closelist = { } -- handlers to close
-
-_readlistlen = 0 -- length of readlist
-_sendlistlen = 0 -- length of sendlist
-_timerlistlen = 0 -- lenght of timerlist
-
-_sendtraffic = 0 -- some stats
-_readtraffic = 0
-
-_selecttimeout = 1 -- timeout of socket.select
-_sleeptime = 0 -- time to wait at the end of every loop
-
-_maxsendlen = 51000 * 1024 -- max len of send buffer
-_maxreadlen = 25000 * 1024 -- max len of read buffer
-
-_checkinterval = 1200000 -- interval in secs to check idle clients
-_sendtimeout = 60000 -- allowed send idle time in secs
-_readtimeout = 6 * 60 * 60 -- allowed read idle time in secs
-
-_cleanqueue = false -- clean bufferqueue after using
-
-_maxclientsperserver = 1000
-
-_maxsslhandshake = 30 -- max handshake round-trips
-----------------------------------// PRIVATE //--
-
-wrapserver = function( listeners, socket, ip, serverport, pattern, sslctx, maxconnections, startssl ) -- this function wraps a server
-
- maxconnections = maxconnections or _maxclientsperserver
-
- local connections = 0
-
- local dispatch, disconnect = listeners.incoming or listeners.listener, listeners.disconnect
-
- local err
-
- local ssl = false
-
- if sslctx then
- ssl = true
- if not ssl_newcontext then
- out_error "luasec not found"
- ssl = false
- end
- if type( sslctx ) ~= "table" then
- out_error "server.lua: wrong server sslctx"
- ssl = false
- end
- local ctx;
- ctx, err = ssl_newcontext( sslctx )
- if not ctx then
- err = err or "wrong sslctx parameters"
- local file;
- file = err:match("^error loading (.-) %(");
- if file then
- if file == "private key" then
- file = sslctx.key or "your private key";
- elseif file == "certificate" then
- file = sslctx.certificate or "your certificate file";
- end
- local reason = err:match("%((.+)%)$") or "some reason";
- if reason == "Permission denied" then
- reason = "Check that the permissions allow Prosody to read this file.";
- elseif reason == "No such file or directory" then
- reason = "Check that the path is correct, and the file exists.";
- elseif reason == "system lib" then
- reason = "Previous error (see logs), or other system error.";
- else
- reason = "Reason: "..tostring(reason or "unknown"):lower();
- end
- log("error", "SSL/TLS: Failed to load %s: %s", file, reason);
- else
- log("error", "SSL/TLS: Error initialising for port %d: %s", serverport, err );
- end
- ssl = false
- end
- sslctx = ctx;
- end
- if not ssl then
- sslctx = false;
- if startssl then
- log("error", "Failed to listen on port %d due to SSL/TLS to SSL/TLS initialisation errors (see logs)", serverport )
- return nil, "Cannot start ssl, see log for details"
- end
- end
-
- local accept = socket.accept
-
- --// public methods of the object //--
-
- local handler = { }
-
- handler.shutdown = function( ) end
-
- handler.ssl = function( )
- return ssl
- end
- handler.sslctx = function( )
- return sslctx
- end
- handler.remove = function( )
- connections = connections - 1
- end
- handler.close = function( )
- for _, handler in pairs( _socketlist ) do
- if handler.serverport == serverport then
- handler.disconnect( handler, "server closed" )
- handler.close( true )
- end
- end
- socket:close( )
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
- _readlistlen = removesocket( _readlist, socket, _readlistlen )
- _socketlist[ socket ] = nil
- handler = nil
- socket = nil
- --mem_free( )
- out_put "server.lua: closed server handler and removed sockets from list"
- end
- handler.ip = function( )
- return ip
- end
- handler.serverport = function( )
- return serverport
- end
- handler.socket = function( )
- return socket
- end
- handler.readbuffer = function( )
- if connections > maxconnections then
- out_put( "server.lua: refused new client connection: server full" )
- return false
- end
- local client, err = accept( socket ) -- try to accept
- if client then
- local ip, clientport = client:getpeername( )
- client:settimeout( 0 )
- local handler, client, err = wrapconnection( handler, listeners, client, ip, serverport, clientport, pattern, sslctx, startssl ) -- wrap new client socket
- if err then -- error while wrapping ssl socket
- return false
- end
- connections = connections + 1
- out_put( "server.lua: accepted new client connection from ", tostring(ip), ":", tostring(clientport), " to ", tostring(serverport))
- return dispatch( handler )
- elseif err then -- maybe timeout or something else
- out_put( "server.lua: error with new client connection: ", tostring(err) )
- return false
- end
- end
- return handler
-end
-
-wrapconnection = function( server, listeners, socket, ip, serverport, clientport, pattern, sslctx, startssl ) -- this function wraps a client to a handler object
-
- socket:settimeout( 0 )
-
- --// local import of socket methods //--
-
- local send
- local receive
- local shutdown
-
- --// private closures of the object //--
-
- local ssl
-
- local dispatch = listeners.incoming or listeners.listener
- local status = listeners.status
- local disconnect = listeners.disconnect
-
- local bufferqueue = { } -- buffer array
- local bufferqueuelen = 0 -- end of buffer array
-
- local toclose
- local fatalerror
- local needtls
-
- local bufferlen = 0
-
- local noread = false
- local nosend = false
-
- local sendtraffic, readtraffic = 0, 0
-
- local maxsendlen = _maxsendlen
- local maxreadlen = _maxreadlen
-
- --// public methods of the object //--
-
- local handler = bufferqueue -- saves a table ^_^
-
- handler.dispatch = function( )
- return dispatch
- end
- handler.disconnect = function( )
- return disconnect
- end
- handler.setlistener = function( listeners )
- dispatch = listeners.incoming
- disconnect = listeners.disconnect
- end
- handler.getstats = function( )
- return readtraffic, sendtraffic
- end
- handler.ssl = function( )
- return ssl
- end
- handler.sslctx = function ( )
- return sslctx
- end
- handler.send = function( _, data, i, j )
- return send( socket, data, i, j )
- end
- handler.receive = function( pattern, prefix )
- return receive( socket, pattern, prefix )
- end
- handler.shutdown = function( pattern )
- return shutdown( socket, pattern )
- end
- handler.close = function( forced )
- if not handler then return true; end
- _readlistlen = removesocket( _readlist, socket, _readlistlen )
- _readtimes[ handler ] = nil
- if bufferqueuelen ~= 0 then
- if not ( forced or fatalerror ) then
- handler.sendbuffer( )
- if bufferqueuelen ~= 0 then -- try again...
- if handler then
- handler.write = nil -- ... but no further writing allowed
- end
- toclose = true
- return false
- end
- else
- send( socket, table_concat( bufferqueue, "", 1, bufferqueuelen ), 1, bufferlen ) -- forced send
- end
- end
- if socket then
- _ = shutdown and shutdown( socket )
- socket:close( )
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
- _socketlist[ socket ] = nil
- socket = nil
- else
- out_put "server.lua: socket already closed"
- end
- if handler then
- _writetimes[ handler ] = nil
- _closelist[ handler ] = nil
- handler = nil
- end
- if server then
- server.remove( )
- end
- out_put "server.lua: closed client handler and removed socket from list"
- return true
- end
- handler.ip = function( )
- return ip
- end
- handler.serverport = function( )
- return serverport
- end
- handler.clientport = function( )
- return clientport
- end
- local write = function( data )
- bufferlen = bufferlen + string_len( data )
- if bufferlen > maxsendlen then
- _closelist[ handler ] = "send buffer exceeded" -- cannot close the client at the moment, have to wait to the end of the cycle
- handler.write = idfalse -- dont write anymore
- return false
- elseif socket and not _sendlist[ socket ] then
- _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
- end
- bufferqueuelen = bufferqueuelen + 1
- bufferqueue[ bufferqueuelen ] = data
- if handler then
- _writetimes[ handler ] = _writetimes[ handler ] or _currenttime
- end
- return true
- end
- handler.write = write
- handler.bufferqueue = function( )
- return bufferqueue
- end
- handler.socket = function( )
- return socket
- end
- handler.pattern = function( new )
- pattern = new or pattern
- return pattern
- end
- handler.setsend = function ( newsend )
- send = newsend or send
- return send
- end
- handler.bufferlen = function( readlen, sendlen )
- maxsendlen = sendlen or maxsendlen
- maxreadlen = readlen or maxreadlen
- return maxreadlen, maxsendlen
- end
- handler.lock = function( switch )
- if switch == true then
- handler.write = idfalse
- local tmp = _sendlistlen
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
- _writetimes[ handler ] = nil
- if _sendlistlen ~= tmp then
- nosend = true
- end
- tmp = _readlistlen
- _readlistlen = removesocket( _readlist, socket, _readlistlen )
- _readtimes[ handler ] = nil
- if _readlistlen ~= tmp then
- noread = true
- end
- elseif switch == false then
- handler.write = write
- if noread then
- noread = false
- _readlistlen = addsocket(_readlist, socket, _readlistlen)
- _readtimes[ handler ] = _currenttime
- end
- if nosend then
- nosend = false
- write( "" )
- end
- end
- return noread, nosend
- end
- local _readbuffer = function( ) -- this function reads data
- local buffer, err, part = receive( socket, pattern ) -- receive buffer with "pattern"
- if not err or ( err == "timeout" or err == "wantread" ) then -- received something
- local buffer = buffer or part or ""
- local len = string_len( buffer )
- if len > maxreadlen then
- disconnect( handler, "receive buffer exceeded" )
- handler.close( true )
- return false
- end
- local count = len * STAT_UNIT
- readtraffic = readtraffic + count
- _readtraffic = _readtraffic + count
- _readtimes[ handler ] = _currenttime
- --out_put( "server.lua: read data '", buffer:gsub("[^%w%p ]", "."), "', error: ", err )
- return dispatch( handler, buffer, err )
- else -- connections was closed or fatal error
- out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) )
- fatalerror = true
- disconnect( handler, err )
- _ = handler and handler.close( )
- return false
- end
- end
- local _sendbuffer = function( ) -- this function sends data
- local succ, err, byte, buffer, count;
- local count;
- if socket then
- buffer = table_concat( bufferqueue, "", 1, bufferqueuelen )
- succ, err, byte = send( socket, buffer, 1, bufferlen )
- count = ( succ or byte or 0 ) * STAT_UNIT
- sendtraffic = sendtraffic + count
- _sendtraffic = _sendtraffic + count
- _ = _cleanqueue and clean( bufferqueue )
- --out_put( "server.lua: sended '", buffer, "', bytes: ", tostring(succ), ", error: ", tostring(err), ", part: ", tostring(byte), ", to: ", tostring(ip), ":", tostring(clientport) )
- else
- succ, err, count = false, "closed", 0;
- end
- if succ then -- sending succesful
- bufferqueuelen = 0
- bufferlen = 0
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) -- delete socket from writelist
- _ = needtls and handler.starttls(true)
- _writetimes[ handler ] = nil
- _ = toclose and handler.close( )
- return true
- elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write
- buffer = string_sub( buffer, byte + 1, bufferlen ) -- new buffer
- bufferqueue[ 1 ] = buffer -- insert new buffer in queue
- bufferqueuelen = 1
- bufferlen = bufferlen - byte
- _writetimes[ handler ] = _currenttime
- return true
- else -- connection was closed during sending or fatal error
- out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) )
- fatalerror = true
- disconnect( handler, err )
- _ = handler and handler.close( )
- return false
- end
- end
-
- -- Set the sslctx
- local handshake;
- function handler.set_sslctx(new_sslctx)
- ssl = true
- sslctx = new_sslctx;
- local wrote
- local read
- handshake = coroutine_wrap( function( client ) -- create handshake coroutine
- local err
- for i = 1, _maxsslhandshake do
- _sendlistlen = ( wrote and removesocket( _sendlist, client, _sendlistlen ) ) or _sendlistlen
- _readlistlen = ( read and removesocket( _readlist, client, _readlistlen ) ) or _readlistlen
- read, wrote = nil, nil
- _, err = client:dohandshake( )
- if not err then
- out_put( "server.lua: ssl handshake done" )
- handler.readbuffer = _readbuffer -- when handshake is done, replace the handshake function with regular functions
- handler.sendbuffer = _sendbuffer
- _ = status and status( handler, "ssl-handshake-complete" )
- _readlistlen = addsocket(_readlist, client, _readlistlen)
- return true
- else
- out_put( "server.lua: error during ssl handshake: ", tostring(err) )
- if err == "wantwrite" and not wrote then
- _sendlistlen = addsocket(_sendlist, client, _sendlistlen)
- wrote = true
- elseif err == "wantread" and not read then
- _readlistlen = addsocket(_readlist, client, _readlistlen)
- read = true
- else
- break;
- end
- --coroutine_yield( handler, nil, err ) -- handshake not finished
- coroutine_yield( )
- end
- end
- disconnect( handler, "ssl handshake failed" )
- _ = handler and handler.close( true ) -- forced disconnect
- return false -- handshake failed
- end
- )
- end
- if sslctx then -- ssl?
- handler.set_sslctx(sslctx);
- if startssl then -- ssl now?
- --out_put("server.lua: ", "starting ssl handshake")
- local err
- socket, err = ssl_wrap( socket, sslctx ) -- wrap socket
- if err then
- out_put( "server.lua: ssl error: ", tostring(err) )
- --mem_free( )
- return nil, nil, err -- fatal error
- end
- socket:settimeout( 0 )
- handler.readbuffer = handshake
- handler.sendbuffer = handshake
- handshake( socket ) -- do handshake
- if not socket then
- return nil, nil, "ssl handshake failed";
- end
- else
- -- We're not automatically doing SSL, so we're not secure (yet)
- ssl = false
- handler.starttls = function( now )
- if not now then
- --out_put "server.lua: we need to do tls, but delaying until later"
- needtls = true
- return
- end
- --out_put( "server.lua: attempting to start tls on " .. tostring( socket ) )
- local oldsocket, err = socket
- socket, err = ssl_wrap( socket, sslctx ) -- wrap socket
- --out_put( "server.lua: sslwrapped socket is " .. tostring( socket ) )
- if err then
- out_put( "server.lua: error while starting tls on client: ", tostring(err) )
- return nil, err -- fatal error
- end
-
- socket:settimeout( 0 )
-
- -- add the new socket to our system
-
- send = socket.send
- receive = socket.receive
- shutdown = id
-
- _socketlist[ socket ] = handler
- _readlistlen = addsocket(_readlist, socket, _readlistlen)
-
- -- remove traces of the old socket
-
- _readlistlen = removesocket( _readlist, oldsocket, _readlistlen )
- _sendlistlen = removesocket( _sendlist, oldsocket, _sendlistlen )
- _socketlist[ oldsocket ] = nil
-
- handler.starttls = nil
- needtls = nil
-
- -- Secure now
- ssl = true
-
- handler.readbuffer = handshake
- handler.sendbuffer = handshake
- handshake( socket ) -- do handshake
- end
- handler.readbuffer = _readbuffer
- handler.sendbuffer = _sendbuffer
- end
- else -- normal connection
- ssl = false
- handler.readbuffer = _readbuffer
- handler.sendbuffer = _sendbuffer
- end
-
- send = socket.send
- receive = socket.receive
- shutdown = ( ssl and id ) or socket.shutdown
-
- _socketlist[ socket ] = handler
- _readlistlen = addsocket(_readlist, socket, _readlistlen)
-
- return handler, socket
-end
-
-id = function( )
-end
-
-idfalse = function( )
- return false
-end
-
-addsocket = function( list, socket, len )
- if not list[ socket ] then
- len = len + 1
- list[ len ] = socket
- list[ socket ] = len
- end
- return len;
-end
-
-removesocket = function( list, socket, len ) -- this function removes sockets from a list ( copied from copas )
- local pos = list[ socket ]
- if pos then
- list[ socket ] = nil
- local last = list[ len ]
- list[ len ] = nil
- if last ~= socket then
- list[ last ] = pos
- list[ pos ] = last
- end
- return len - 1
- end
- return len
-end
-
-closesocket = function( socket )
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
- _readlistlen = removesocket( _readlist, socket, _readlistlen )
- _socketlist[ socket ] = nil
- socket:close( )
- --mem_free( )
-end
-
-----------------------------------// PUBLIC //--
-
-addserver = function( listeners, port, addr, pattern, sslctx, maxconnections, startssl ) -- this function provides a way for other scripts to reg a server
- local err
- --out_put("server.lua: autossl on ", port, " is ", startssl)
- if type( listeners ) ~= "table" then
- err = "invalid listener table"
- end
- if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then
- err = "invalid port"
- elseif _server[ port ] then
- err = "listeners on port '" .. port .. "' already exist"
- elseif sslctx and not luasec then
- err = "luasec not found"
- end
- if err then
- out_error( "server.lua, port ", port, ": ", err )
- return nil, err
- end
- addr = addr or "*"
- local server, err = socket_bind( addr, port )
- if err then
- out_error( "server.lua, port ", port, ": ", err )
- return nil, err
- end
- local handler, err = wrapserver( listeners, server, addr, port, pattern, sslctx, maxconnections, startssl ) -- wrap new server socket
- if not handler then
- server:close( )
- return nil, err
- end
- server:settimeout( 0 )
- _readlistlen = addsocket(_readlist, server, _readlistlen)
- _server[ port ] = handler
- _socketlist[ server ] = handler
- out_put( "server.lua: new server listener on '", addr, ":", port, "'" )
- return handler
-end
-
-getserver = function ( port )
- return _server[ port ];
-end
-
-removeserver = function( port )
- local handler = _server[ port ]
- if not handler then
- return nil, "no server found on port '" .. tostring( port ) .. "'"
- end
- handler.close( )
- _server[ port ] = nil
- return true
-end
-
-closeall = function( )
- for _, handler in pairs( _socketlist ) do
- handler.close( )
- _socketlist[ _ ] = nil
- end
- _readlistlen = 0
- _sendlistlen = 0
- _timerlistlen = 0
- _server = { }
- _readlist = { }
- _sendlist = { }
- _timerlist = { }
- _socketlist = { }
- --mem_free( )
-end
-
-getsettings = function( )
- return _selecttimeout, _sleeptime, _maxsendlen, _maxreadlen, _checkinterval, _sendtimeout, _readtimeout, _cleanqueue, _maxclientsperserver, _maxsslhandshake
-end
-
-changesettings = function( new )
- if type( new ) ~= "table" then
- return nil, "invalid settings table"
- end
- _selecttimeout = tonumber( new.timeout ) or _selecttimeout
- _sleeptime = tonumber( new.sleeptime ) or _sleeptime
- _maxsendlen = tonumber( new.maxsendlen ) or _maxsendlen
- _maxreadlen = tonumber( new.maxreadlen ) or _maxreadlen
- _checkinterval = tonumber( new.checkinterval ) or _checkinterval
- _sendtimeout = tonumber( new.sendtimeout ) or _sendtimeout
- _readtimeout = tonumber( new.readtimeout ) or _readtimeout
- _cleanqueue = new.cleanqueue
- _maxclientsperserver = new._maxclientsperserver or _maxclientsperserver
- _maxsslhandshake = new._maxsslhandshake or _maxsslhandshake
- return true
-end
-
-addtimer = function( listener )
- if type( listener ) ~= "function" then
- return nil, "invalid listener function"
- end
- _timerlistlen = _timerlistlen + 1
- _timerlist[ _timerlistlen ] = listener
- return true
-end
-
-stats = function( )
- return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen
-end
-
-local dontstop = true; -- thinking about tomorrow, ...
-
-setquitting = function (quit)
- dontstop = not quit;
- return;
-end
-
-loop = function( ) -- this is the main loop of the program
- while dontstop do
- local read, write, err = socket_select( _readlist, _sendlist, _selecttimeout )
- for i, socket in ipairs( write ) do -- send data waiting in writequeues
- local handler = _socketlist[ socket ]
- if handler then
- handler.sendbuffer( )
- else
- closesocket( socket )
- out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen
- end
- end
- for i, socket in ipairs( read ) do -- receive data
- local handler = _socketlist[ socket ]
- if handler then
- handler.readbuffer( )
- else
- closesocket( socket )
- out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen
- end
- end
- for handler, err in pairs( _closelist ) do
- handler.disconnect( )( handler, err )
- handler.close( true ) -- forced disconnect
- end
- clean( _closelist )
- _currenttime = os_time( )
- if os_difftime( _currenttime - _timer ) >= 1 then
- for i = 1, _timerlistlen do
- _timerlist[ i ]( _currenttime ) -- fire timers
- end
- _timer = _currenttime
- end
- socket_sleep( _sleeptime ) -- wait some time
- --collectgarbage( )
- end
- return "quitting"
-end
-
---// EXPERIMENTAL //--
-
-local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx, startssl )
- local handler = wrapconnection( nil, listeners, socket, ip, serverport, "clientport", pattern, sslctx, startssl )
- _socketlist[ socket ] = handler
- _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
- return handler, socket
-end
-
-local addclient = function( address, port, listeners, pattern, sslctx, startssl )
- local client, err = luasocket.tcp( )
- if err then
- return nil, err
- end
- client:settimeout( 0 )
- _, err = client:connect( address, port )
- if err then -- try again
- local handler = wrapclient( client, address, port, listeners )
- else
- wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx, startssl )
- end
-end
-
---// EXPERIMENTAL //--
-
-----------------------------------// BEGIN //--
-
-use "setmetatable" ( _socketlist, { __mode = "k" } )
-use "setmetatable" ( _readtimes, { __mode = "k" } )
-use "setmetatable" ( _writetimes, { __mode = "k" } )
-
-_timer = os_time( )
-_starttime = os_time( )
-
-addtimer( function( )
- local difftime = os_difftime( _currenttime - _starttime )
- if difftime > _checkinterval then
- _starttime = _currenttime
- for handler, timestamp in pairs( _writetimes ) do
- if os_difftime( _currenttime - timestamp ) > _sendtimeout then
- --_writetimes[ handler ] = nil
- handler.disconnect( )( handler, "send timeout" )
- handler.close( true ) -- forced disconnect
- end
- end
- for handler, timestamp in pairs( _readtimes ) do
- if os_difftime( _currenttime - timestamp ) > _readtimeout then
- --_readtimes[ handler ] = nil
- handler.disconnect( )( handler, "read timeout" )
- handler.close( ) -- forced disconnect?
- end
- end
- end
- end
-)
-
-----------------------------------// PUBLIC INTERFACE //--
-
-return {
-
- addclient = addclient,
- wrapclient = wrapclient,
-
- loop = loop,
- stats = stats,
- closeall = closeall,
- addtimer = addtimer,
- addserver = addserver,
- getserver = getserver,
- getsettings = getsettings,
- setquitting = setquitting,
- removeserver = removeserver,
- changesettings = changesettings,
-}
+
+local use_luaevent = require "core.configmanager".get("*", "core", "use_libevent");
+
+if use_luaevent then
+ use_luaevent = pcall(require, "luaevent.core");
+ if not use_luaevent then
+ log("error", "libevent not found, falling back to select()");
+ end
+end
+
+local server;
+
+if use_luaevent then
+ server = require "net.server_event";
+ -- util.timer requires "net.server", so instead of having
+ -- Lua look for, and load us again (causing a loop) - set this here
+ -- (usually it isn't set until we return, look down there...)
+ package.loaded["net.server"] = server;
+
+ -- Backwards compatibility for timers, addtimer
+ -- called a function roughly every second
+ local add_task = require "util.timer".add_task;
+ function server.addtimer(f)
+ return add_task(1, function (...) f(...); return 1; end);
+ end
+
+ -- Overwrite signal.signal() because we need to ask libevent to
+ -- handle them instead
+ local ok, signal = pcall(require, "util.signal");
+ if ok and signal then
+ local _signal_signal = signal.signal;
+ function signal.signal(signal_id, handler)
+ if type(signal_id) == "string" then
+ signal_id = signal[signal_id:upper()];
+ end
+ if type(signal_id) ~= "number" then
+ return false, "invalid-signal";
+ end
+ return server.hook_signal(signal_id, handler);
+ end
+ end
+else
+ server = require "net.server_select";
+ package.loaded["net.server"] = server;
+end
+
+-- require "net.server" shall now forever return this,
+-- ie. server_select or server_event as chosen above.
+return server;
diff --git a/net/server_event.lua b/net/server_event.lua
new file mode 100644
index 00000000..d041ae43
--- /dev/null
+++ b/net/server_event.lua
@@ -0,0 +1,845 @@
+--[[
+
+
+ server.lua based on lua/libevent by blastbeat
+
+ notes:
+ -- when using luaevent, never register 2 or more EV_READ at one socket, same for EV_WRITE
+ -- you cant even register a new EV_READ/EV_WRITE callback inside another one
+ -- never call eventcallback:close( ) from inside eventcallback
+ -- to do some of the above, use timeout events or something what will called from outside
+ -- dont let garbagecollect eventcallbacks, as long they are running
+ -- when using luasec, there are 4 cases of timeout errors: wantread or wantwrite during reading or writing
+
+--]]
+
+local SCRIPT_NAME = "server_event.lua"
+local SCRIPT_VERSION = "0.05"
+local SCRIPT_AUTHOR = "blastbeat"
+local LAST_MODIFIED = "2009/11/20"
+
+local cfg = {
+ MAX_CONNECTIONS = 100000, -- max per server connections (use "ulimit -n" on *nix)
+ MAX_HANDSHAKE_ATTEMPS = 1000, -- attemps to finish ssl handshake
+ HANDSHAKE_TIMEOUT = 30, -- timout in seconds per handshake attemp
+ MAX_READ_LENGTH = 1024 * 1024 * 1024 * 1024, -- max bytes allowed to read from sockets
+ MAX_SEND_LENGTH = 1024 * 1024 * 1024 * 1024, -- max bytes size of write buffer (for writing on sockets)
+ ACCEPT_DELAY = 10, -- seconds to wait until the next attemp of a full server to accept
+ READ_TIMEOUT = 60 * 30, -- timeout in seconds for read data from socket
+ WRITE_TIMEOUT = 30, -- timeout in seconds for write data on socket
+ CONNECT_TIMEOUT = 20, -- timeout in seconds for connection attemps
+ CLEAR_DELAY = 5, -- seconds to wait for clearing interface list (and calling ondisconnect listeners)
+ DEBUG = true, -- show debug messages
+}
+
+local function use(x) return rawget(_G, x); end
+local print = use "print"
+local pcall = use "pcall"
+local ipairs = use "ipairs"
+local string = use "string"
+local select = use "select"
+local require = use "require"
+local tostring = use "tostring"
+local coroutine = use "coroutine"
+local setmetatable = use "setmetatable"
+
+local ssl = use "ssl"
+local socket = use "socket" or require "socket"
+
+local log = require ("util.logger").init("socket")
+
+local function debug(...)
+ return log("debug", ("%s "):rep(select('#', ...)), ...)
+end
+local vdebug = debug;
+
+local bitor = ( function( ) -- thx Rici Lake
+ local hasbit = function( x, p )
+ return x % ( p + p ) >= p
+ end
+ return function( x, y )
+ local p = 1
+ local z = 0
+ local limit = x > y and x or y
+ while p <= limit do
+ if hasbit( x, p ) or hasbit( y, p ) then
+ z = z + p
+ end
+ p = p + p
+ end
+ return z
+ end
+end )( )
+
+local event = require "luaevent.core"
+local base = event.new( )
+local EV_READ = event.EV_READ
+local EV_WRITE = event.EV_WRITE
+local EV_TIMEOUT = event.EV_TIMEOUT
+local EV_SIGNAL = event.EV_SIGNAL
+
+local EV_READWRITE = bitor( EV_READ, EV_WRITE )
+
+local interfacelist = ( function( ) -- holds the interfaces for sockets
+ local array = { }
+ local len = 0
+ return function( method, arg )
+ if "add" == method then
+ len = len + 1
+ array[ len ] = arg
+ arg:_position( len )
+ return len
+ elseif "delete" == method then
+ if len <= 0 then
+ return nil, "array is already empty"
+ end
+ local position = arg:_position() -- get position in array
+ if position ~= len then
+ local interface = array[ len ] -- get last interface
+ array[ position ] = interface -- copy it into free position
+ array[ len ] = nil -- free last position
+ interface:_position( position ) -- set new position in array
+ else -- free last position
+ array[ len ] = nil
+ end
+ len = len - 1
+ return len
+ else
+ return array
+ end
+ end
+end )( )
+
+-- Client interface methods
+local interface_mt
+do
+ interface_mt = {}; interface_mt.__index = interface_mt;
+
+ local addevent = base.addevent
+ local coroutine_wrap, coroutine_yield = coroutine.wrap,coroutine.yield
+ local string_len = string.len
+
+ -- Private methods
+ function interface_mt:_position(new_position)
+ self.position = new_position or self.position
+ return self.position;
+ end
+ function interface_mt:_close() -- regs event to start self:_destroy()
+ local callback = function( )
+ self:_destroy();
+ self.eventclose = nil
+ return -1
+ end
+ self.eventclose = addevent( base, nil, EV_TIMEOUT, callback, 0 )
+ return true
+ end
+
+ function interface_mt:_start_connection(plainssl) -- should be called from addclient
+ local callback = function( event )
+ if EV_TIMEOUT == event then -- timout during connection
+ self.fatalerror = "connection timeout"
+ self:ontimeout() -- call timeout listener
+ self:_close()
+ debug( "new connection failed. id:", self.id, "error:", self.fatalerror )
+ else
+ if plainssl and ssl then -- start ssl session
+ self:starttls()
+ else -- normal connection
+ self:_start_session( self.listener.onconnect )
+ end
+ debug( "new connection established. id:", self.id )
+ end
+ self.eventconnect = nil
+ return -1
+ end
+ self.eventconnect = addevent( base, self.conn, EV_WRITE, callback, cfg.CONNECT_TIMEOUT )
+ return true
+ end
+ function interface_mt:_start_session(onconnect) -- new session, for example after startssl
+ if self.type == "client" then
+ local callback = function( )
+ self:_lock( false, false, false )
+ --vdebug( "start listening on client socket with id:", self.id )
+ self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ) -- register callback
+ self:onincoming()
+ self.eventsession = nil
+ return -1
+ end
+ self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 )
+ else
+ self:_lock( false )
+ --vdebug( "start listening on server socket with id:", self.id )
+ self.eventread = addevent( base, self.conn, EV_READ, self.readcallback ) -- register callback
+ end
+ return true
+ end
+ function interface_mt:_start_ssl(arg) -- old socket will be destroyed, therefore we have to close read/write events first
+ --vdebug( "starting ssl session with client id:", self.id )
+ local _
+ _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks!
+ _ = self.eventwrite and self.eventwrite:close( )
+ self.eventread, self.eventwrite = nil, nil
+ local err
+ self.conn, err = ssl.wrap( self.conn, self._sslctx )
+ if err then
+ self.fatalerror = err
+ self.conn = nil -- cannot be used anymore
+ if "onconnect" == arg then
+ self.ondisconnect = nil -- dont call this when client isnt really connected
+ end
+ self:_close()
+ debug( "fatal error while ssl wrapping:", err )
+ return false
+ end
+ self.conn:settimeout( 0 ) -- set non blocking
+ local handshakecallback = coroutine_wrap(
+ function( event )
+ local _, err
+ local attempt = 0
+ local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPS
+ while attempt < maxattempt do -- no endless loop
+ attempt = attempt + 1
+ debug( "ssl handshake of client with id:"..tostring(self).."attemp:"..attempt )
+ if attempt > maxattempt then
+ self.fatalerror = "max handshake attemps exceeded"
+ elseif EV_TIMEOUT == event then
+ self.fatalerror = "timeout during handshake"
+ else
+ _, err = self.conn:dohandshake( )
+ if not err then
+ self:_lock( false, false, false ) -- unlock the interface; sending, closing etc allowed
+ self.send = self.conn.send -- caching table lookups with new client object
+ self.receive = self.conn.receive
+ local onsomething
+ if "onconnect" == arg then -- trigger listener
+ onsomething = self.onconnect
+ else
+ onsomething = self.onsslconnection
+ end
+ self:_start_session( onsomething )
+ debug( "ssl handshake done" )
+ self:onstatus("ssl-handshake-complete");
+ self.eventhandshake = nil
+ return -1
+ end
+ debug( "error during ssl handshake:", err )
+ if err == "wantwrite" then
+ event = EV_WRITE
+ elseif err == "wantread" then
+ event = EV_READ
+ else
+ self.fatalerror = err
+ end
+ end
+ if self.fatalerror then
+ if "onconnect" == arg then
+ self.ondisconnect = nil -- dont call this when client isnt really connected
+ end
+ self:_close()
+ debug( "handshake failed because:", self.fatalerror )
+ self.eventhandshake = nil
+ return -1
+ end
+ event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT ) -- yield this monster...
+ end
+ end
+ )
+ debug "starting handshake..."
+ self:_lock( false, true, true ) -- unlock read/write events, but keep interface locked
+ self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT )
+ return true
+ end
+ function interface_mt:_destroy() -- close this interface + events and call last listener
+ debug( "closing client with id:", self.id )
+ self:_lock( true, true, true ) -- first of all, lock the interface to avoid further actions
+ local _
+ _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks!
+ if self.type == "client" then
+ _ = self.eventwrite and self.eventwrite:close( )
+ _ = self.eventhandshake and self.eventhandshake:close( )
+ _ = self.eventstarthandshake and self.eventstarthandshake:close( )
+ _ = self.eventconnect and self.eventconnect:close( )
+ _ = self.eventsession and self.eventsession:close( )
+ _ = self.eventwritetimeout and self.eventwritetimeout:close( )
+ _ = self.eventreadtimeout and self.eventreadtimeout:close( )
+ _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) -- call ondisconnect listener (wont be the case if handshake failed on connect)
+ _ = self.conn and self.conn:close( ) -- close connection, must also be called outside of any socket registered events!
+ _ = self._server and self._server:counter(-1);
+ self.eventread, self.eventwrite = nil, nil
+ self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil
+ self.readcallback, self.writecallback = nil, nil
+ else
+ self.conn:close( )
+ self.eventread, self.eventclose = nil, nil
+ self.interface, self.readcallback = nil, nil
+ end
+ interfacelist( "delete", self )
+ return true
+ end
+
+ function interface_mt:_lock(nointerface, noreading, nowriting) -- lock or unlock this interface or events
+ self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting
+ return nointerface, noreading, nowriting
+ end
+
+ function interface_mt:lock_read(switch)
+ return self:_lock(self.nointerface, switch, self.nowriting);
+ end
+
+ function interface_mt:counter(c)
+ if c then
+ self._connections = self._connections + c
+ end
+ return self._connections
+ end
+
+ -- Public methods
+ function interface_mt:write(data)
+ if self.nowriting then return nil, "locked" end
+ --vdebug( "try to send data to client, id/data:", self.id, data )
+ data = tostring( data )
+ local len = string_len( data )
+ local total = len + self.writebufferlen
+ if total > cfg.MAX_SEND_LENGTH then -- check buffer length
+ local err = "send buffer exceeded"
+ debug( "error:", err ) -- to much, check your app
+ return nil, err
+ end
+ self.writebuffer = self.writebuffer .. data -- new buffer
+ self.writebufferlen = total
+ if not self.eventwrite then -- register new write event
+ --vdebug( "register new write event" )
+ self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT )
+ end
+ return true
+ end
+ function interface_mt:close(now)
+ if self.nointerface then return nil, "locked"; end
+ debug( "try to close client connection with id:", self.id )
+ if self.type == "client" then
+ self.fatalerror = "client to close"
+ if ( not self.eventwrite ) or now then -- try to close immediately
+ self:_lock( true, true, true )
+ self:_close()
+ return true
+ else -- wait for incomplete write request
+ self:_lock( true, true, false )
+ debug "closing delayed until writebuffer is empty"
+ return nil, "writebuffer not empty, waiting"
+ end
+ else
+ debug( "try to close server with id:", self.id, "args:", now )
+ self.fatalerror = "server to close"
+ self:_lock( true )
+ local count = 0
+ for _, item in ipairs( interfacelist( ) ) do
+ if ( item.type ~= "server" ) and ( item._server == self ) then -- client/server match
+ if item:close( now ) then -- writebuffer was empty
+ count = count + 1
+ end
+ end
+ end
+ local timeout = 0 -- dont wait for unfinished writebuffers of clients...
+ if not now then
+ timeout = cfg.WRITE_TIMEOUT -- ...or wait for it
+ end
+ self:_close( timeout ) -- add new event to remove the server interface
+ debug( "seconds remained until server is closed:", timeout )
+ return count -- returns finished clients with empty writebuffer
+ end
+ end
+
+ function interface_mt:server()
+ return self._server or self;
+ end
+
+ function interface_mt:port()
+ return self._port
+ end
+
+ function interface_mt:serverport()
+ return self._serverport
+ end
+
+ function interface_mt:ip()
+ return self._ip
+ end
+
+ function interface_mt:ssl()
+ return self._usingssl
+ end
+
+ function interface_mt:type()
+ return self._type or "client"
+ end
+
+ function interface_mt:connections()
+ return self._connections
+ end
+
+ function interface_mt:address()
+ return self.addr
+ end
+
+ function interface_mt:set_sslctx(sslctx)
+ self._sslctx = sslctx;
+ if sslctx then
+ self.starttls = nil; -- use starttls() of interface_mt
+ else
+ self.starttls = false; -- prevent starttls()
+ end
+ end
+
+ function interface_mt:set_send(new_send)
+ -- No-op, we always use the underlying connection's send
+ end
+
+ function interface_mt:starttls(sslctx)
+ debug( "try to start ssl at client id:", self.id )
+ local err
+ self._sslctx = sslctx;
+ if self._usingssl then -- startssl was already called
+ err = "ssl already active"
+ end
+ if err then
+ debug( "error:", err )
+ return nil, err
+ end
+ self._usingssl = true
+ self.startsslcallback = function( ) -- we have to start the handshake outside of a read/write event
+ self.startsslcallback = nil
+ self:_start_ssl();
+ self.eventstarthandshake = nil
+ return -1
+ end
+ if not self.eventwrite then
+ self:_lock( true, true, true ) -- lock the interface, to not disturb the handshake
+ self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 ) -- add event to start handshake
+ else -- wait until writebuffer is empty
+ self:_lock( true, true, false )
+ debug "ssl session delayed until writebuffer is empty..."
+ end
+ self.starttls = false;
+ return true
+ end
+
+ function interface_mt:setoption(option, value)
+ if self.conn.setoption then
+ return self.conn:setoption(option, value);
+ end
+ return false, "setoption not implemented";
+ end
+
+ function interface_mt:setlistener(listener)
+ self.onconnect, self.ondisconnect, self.onincoming, self.ontimeout, self.onstatus
+ = listener.onconnect, listener.ondisconnect, listener.onincoming, listener.ontimeout, listener.onstatus;
+ end
+
+ -- Stub handlers
+ function interface_mt:onconnect()
+ end
+ function interface_mt:onincoming()
+ end
+ function interface_mt:ondisconnect()
+ end
+ function interface_mt:ontimeout()
+ end
+ function interface_mt:onstatus()
+ debug("server.lua: Dummy onstatus()")
+ end
+end
+
+-- End of client interface methods
+
+local handleclient;
+do
+ local string_sub = string.sub -- caching table lookups
+ local string_len = string.len
+ local addevent = base.addevent
+ local coroutine_wrap = coroutine.wrap
+ local socket_gettime = socket.gettime
+ local coroutine_yield = coroutine.yield
+ function handleclient( client, ip, port, server, pattern, listener, _, sslctx ) -- creates an client interface
+ --vdebug("creating client interfacce...")
+ local interface = {
+ type = "client";
+ conn = client;
+ currenttime = socket_gettime( ); -- safe the origin
+ writebuffer = ""; -- writebuffer
+ writebufferlen = 0; -- length of writebuffer
+ send = client.send; -- caching table lookups
+ receive = client.receive;
+ onconnect = listener.onconnect; -- will be called when client disconnects
+ ondisconnect = listener.ondisconnect; -- will be called when client disconnects
+ onincoming = listener.onincoming; -- will be called when client sends data
+ ontimeout = listener.ontimeout; -- called when fatal socket timeout occurs
+ onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS)
+ eventread = false, eventwrite = false, eventclose = false,
+ eventhandshake = false, eventstarthandshake = false; -- event handler
+ eventconnect = false, eventsession = false; -- more event handler...
+ eventwritetimeout = false; -- even more event handler...
+ eventreadtimeout = false;
+ fatalerror = false; -- error message
+ writecallback = false; -- will be called on write events
+ readcallback = false; -- will be called on read events
+ nointerface = true; -- lock/unlock parameter of this interface
+ noreading = false, nowriting = false; -- locks of the read/writecallback
+ startsslcallback = false; -- starting handshake callback
+ position = false; -- position of client in interfacelist
+
+ -- Properties
+ _ip = ip, _port = port, _server = server, _pattern = pattern,
+ _serverport = (server and server:port() or nil),
+ _sslctx = sslctx; -- parameters
+ _usingssl = false; -- client is using ssl;
+ }
+ if not ssl then interface.starttls = false; end
+ interface.id = tostring(interface):match("%x+$");
+ interface.writecallback = function( event ) -- called on write events
+ --vdebug( "new client write event, id/ip/port:", interface, ip, port )
+ if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then -- leave this event
+ --vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror )
+ interface.eventwrite = false
+ return -1
+ end
+ if EV_TIMEOUT == event then -- took too long to write some data to socket -> disconnect
+ interface.fatalerror = "timeout during writing"
+ debug( "writing failed:", interface.fatalerror )
+ interface:_close()
+ interface.eventwrite = false
+ return -1
+ else -- can write :)
+ if interface._usingssl then -- handle luasec
+ if interface.eventreadtimeout then -- we have to read first
+ local ret = interface.readcallback( ) -- call readcallback
+ --vdebug( "tried to read in writecallback, result:", ret )
+ end
+ if interface.eventwritetimeout then -- luasec only
+ interface.eventwritetimeout:close( ) -- first we have to close timeout event which where regged after a wantread error
+ interface.eventwritetimeout = false
+ end
+ end
+ local succ, err, byte = interface.conn:send( interface.writebuffer, 1, interface.writebufferlen )
+ --vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte )
+ if succ then -- writing succesful
+ interface.writebuffer = ""
+ interface.writebufferlen = 0
+ if interface.fatalerror then
+ debug "closing client after writing"
+ interface:_close() -- close interface if needed
+ elseif interface.startsslcallback then -- start ssl connection if needed
+ debug "starting ssl handshake after writing"
+ interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 )
+ elseif interface.eventreadtimeout then
+ return EV_WRITE, EV_TIMEOUT
+ end
+ interface.eventwrite = nil
+ return -1
+ elseif byte then -- want write again
+ --vdebug( "writebuffer is not empty:", err )
+ interface.writebuffer = string_sub( interface.writebuffer, byte + 1, interface.writebufferlen ) -- new buffer
+ interface.writebufferlen = interface.writebufferlen - byte
+ if "wantread" == err then -- happens only with luasec
+ local callback = function( )
+ interface:_close()
+ interface.eventwritetimeout = nil
+ return evreturn, evtimeout
+ end
+ interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT ) -- reg a new timeout event
+ debug( "wantread during write attemp, reg it in readcallback but dont know what really happens next..." )
+ -- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent
+ return -1
+ end
+ return EV_WRITE, cfg.WRITE_TIMEOUT
+ else -- connection was closed during writing or fatal error
+ interface.fatalerror = err or "fatal error"
+ debug( "connection failed in write event:", interface.fatalerror )
+ interface:_close()
+ interface.eventwrite = nil
+ return -1
+ end
+ end
+ end
+
+ interface.readcallback = function( event ) -- called on read events
+ --vdebug( "new client read event, id/ip/port:", tostring(interface.id), tostring(ip), tostring(port) )
+ if interface.noreading or interface.fatalerror then -- leave this event
+ --vdebug( "leaving this event because:", tostring(interface.noreading or interface.fatalerror) )
+ interface.eventread = nil
+ return -1
+ end
+ if EV_TIMEOUT == event then -- took too long to get some data from client -> disconnect
+ interface.fatalerror = "timeout during receiving"
+ debug( "connection failed:", interface.fatalerror )
+ interface:_close()
+ interface.eventread = nil
+ return -1
+ else -- can read
+ if interface._usingssl then -- handle luasec
+ if interface.eventwritetimeout then -- ok, in the past writecallback was regged
+ local ret = interface.writecallback( ) -- call it
+ --vdebug( "tried to write in readcallback, result:", tostring(ret) )
+ end
+ if interface.eventreadtimeout then
+ interface.eventreadtimeout:close( )
+ interface.eventreadtimeout = nil
+ end
+ end
+ local buffer, err, part = interface.conn:receive( pattern ) -- receive buffer with "pattern"
+ --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) )
+ buffer = buffer or part or ""
+ local len = string_len( buffer )
+ if len > cfg.MAX_READ_LENGTH then -- check buffer length
+ interface.fatalerror = "receive buffer exceeded"
+ debug( "fatal error:", interface.fatalerror )
+ interface:_close()
+ interface.eventread = nil
+ return -1
+ end
+ interface.onincoming( interface, buffer, err ) -- send new data to listener
+ if err and ( err ~= "timeout" and err ~= "wantread" ) then
+ if "wantwrite" == err then -- need to read on write event
+ if not interface.eventwrite then -- register new write event if needed
+ interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT )
+ end
+ interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT,
+ function( )
+ interface:_close()
+ end, cfg.READ_TIMEOUT
+ )
+ debug( "wantwrite during read attemp, reg it in writecallback but dont know what really happens next..." )
+ -- to be honest i dont know what happens next, if it is allowed to first read, the write etc...
+ else -- connection was closed or fatal error
+ interface.fatalerror = err
+ debug( "connection failed in read event:", interface.fatalerror )
+ interface:_close()
+ interface.eventread = nil
+ return -1
+ end
+ end
+ return EV_READ, cfg.READ_TIMEOUT
+ end
+ end
+
+ client:settimeout( 0 ) -- set non blocking
+ setmetatable(interface, interface_mt)
+ interfacelist( "add", interface ) -- add to interfacelist
+ return interface
+ end
+end
+
+local handleserver
+do
+ function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface
+ debug "creating server interface..."
+ local interface = {
+ _connections = 0;
+
+ conn = server;
+ onconnect = listener.onconnect; -- will be called when new client connected
+ eventread = false; -- read event handler
+ eventclose = false; -- close event handler
+ readcallback = false; -- read event callback
+ fatalerror = false; -- error message
+ nointerface = true; -- lock/unlock parameter
+
+ _ip = addr, _port = port, _pattern = pattern,
+ _sslctx = sslctx;
+ }
+ interface.id = tostring(interface):match("%x+$");
+ interface.readcallback = function( event ) -- server handler, called on incoming connections
+ --vdebug( "server can accept, id/addr/port:", interface, addr, port )
+ if interface.fatalerror then
+ --vdebug( "leaving this event because:", self.fatalerror )
+ interface.eventread = nil
+ return -1
+ end
+ local delay = cfg.ACCEPT_DELAY
+ if EV_TIMEOUT == event then
+ if interface._connections >= cfg.MAX_CONNECTIONS then -- check connection count
+ debug( "to many connections, seconds to wait for next accept:", delay )
+ return EV_TIMEOUT, delay -- timeout...
+ else
+ return EV_READ -- accept again
+ end
+ end
+ --vdebug("max connection check ok, accepting...")
+ local client, err = server:accept() -- try to accept; TODO: check err
+ while client do
+ if interface._connections >= cfg.MAX_CONNECTIONS then
+ client:close( ) -- refuse connection
+ debug( "maximal connections reached, refuse client connection; accept delay:", delay )
+ return EV_TIMEOUT, delay -- delay for next accept attemp
+ end
+ local ip, port = client:getpeername( )
+ interface._connections = interface._connections + 1 -- increase connection count
+ local clientinterface = handleclient( client, ip, port, interface, pattern, listener, nil, sslctx )
+ --vdebug( "client id:", clientinterface, "startssl:", startssl )
+ if ssl and sslctx then
+ clientinterface:starttls(sslctx)
+ else
+ clientinterface:_start_session( clientinterface.onconnect )
+ end
+ debug( "accepted incoming client connection from:", ip, port )
+
+ client, err = server:accept() -- try to accept again
+ end
+ return EV_READ
+ end
+
+ server:settimeout( 0 )
+ setmetatable(interface, interface_mt)
+ interfacelist( "add", interface )
+ interface:_start_session()
+ return interface
+ end
+end
+
+local addserver = ( function( )
+ return function( addr, port, listener, pattern, sslcfg, startssl ) -- TODO: check arguments
+ --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslcfg or "nil", startssl or "nil")
+ local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket
+ if not server then
+ debug( "creating server socket failed because:", err )
+ return nil, err
+ end
+ local sslctx
+ if sslcfg then
+ if not ssl then
+ debug "fatal error: luasec not found"
+ return nil, "luasec not found"
+ end
+ sslctx, err = sslcfg
+ if err then
+ debug( "error while creating new ssl context for server socket:", err )
+ return nil, err
+ end
+ end
+ local interface = handleserver( server, addr, port, pattern, listener, sslctx, startssl ) -- new server handler
+ debug( "new server created with id:", tostring(interface))
+ return interface
+ end
+end )( )
+
+local addclient, wrapclient
+do
+ function wrapclient( client, ip, port, listeners, pattern, sslctx, startssl )
+ local interface = handleclient( client, ip, port, nil, pattern, listeners, sslctx )
+ interface:_start_session()
+ return interface
+ --function handleclient( client, ip, port, server, pattern, listener, _, sslctx ) -- creates an client interface
+ end
+
+ function addclient( addr, serverport, listener, pattern, localaddr, localport, sslcfg, startssl )
+ local client, err = socket.tcp() -- creating new socket
+ if not client then
+ debug( "cannot create socket:", err )
+ return nil, err
+ end
+ client:settimeout( 0 ) -- set nonblocking
+ if localaddr then
+ local res, err = client:bind( localaddr, localport, -1 )
+ if not res then
+ debug( "cannot bind client:", err )
+ return nil, err
+ end
+ end
+ local sslctx
+ if sslcfg then -- handle ssl/new context
+ if not ssl then
+ debug "need luasec, but not available"
+ return nil, "luasec not found"
+ end
+ sslctx, err = sslcfg
+ if err then
+ debug( "cannot create new ssl context:", err )
+ return nil, err
+ end
+ end
+ local res, err = client:connect( addr, serverport ) -- connect
+ if res or ( err == "timeout" ) then
+ local ip, port = client:getsockname( )
+ local server = function( )
+ return nil, "this is a dummy server interface"
+ end
+ local interface = wrapclient( client, ip, serverport, listeners, pattern, sslctx, startssl )
+ interface:_start_connection( startssl )
+ debug( "new connection id:", interface.id )
+ return interface, err
+ else
+ debug( "new connection failed:", err )
+ return nil, err
+ end
+ end
+end
+
+
+local loop = function( ) -- starts the event loop
+ base:loop( )
+ return "quitting";
+end
+
+local newevent = ( function( )
+ local add = base.addevent
+ return function( ... )
+ return add( base, ... )
+ end
+end )( )
+
+local closeallservers = function( arg )
+ for _, item in ipairs( interfacelist( ) ) do
+ if item.type == "server" then
+ item:close( arg )
+ end
+ end
+end
+
+local function setquitting(yes)
+ if yes then
+ -- Quit now
+ closeallservers();
+ base:loopexit();
+ end
+end
+
+function get_backend()
+ return base:method();
+end
+
+-- We need to hold onto the events to stop them
+-- being garbage-collected
+local signal_events = {}; -- [signal_num] -> event object
+function hook_signal(signal_num, handler)
+ local function _handler(event)
+ local ret = handler();
+ if ret ~= false then -- Continue handling this signal?
+ return EV_SIGNAL; -- Yes
+ end
+ return -1; -- Close this event
+ end
+ signal_events[signal_num] = base:addevent(signal_num, EV_SIGNAL, _handler);
+ return signal_events[signal_num];
+end
+
+return {
+
+ cfg = cfg,
+ base = base,
+ loop = loop,
+ event = event,
+ event_base = base,
+ addevent = newevent,
+ addserver = addserver,
+ addclient = addclient,
+ wrapclient = wrapclient,
+ setquitting = setquitting,
+ closeall = closeallservers,
+ get_backend = get_backend,
+ hook_signal = hook_signal,
+
+ __NAME = SCRIPT_NAME,
+ __DATE = LAST_MODIFIED,
+ __AUTHOR = SCRIPT_AUTHOR,
+ __VERSION = SCRIPT_VERSION,
+
+}
diff --git a/net/server_select.lua b/net/server_select.lua
new file mode 100644
index 00000000..685cd13e
--- /dev/null
+++ b/net/server_select.lua
@@ -0,0 +1,891 @@
+--
+-- server.lua by blastbeat of the luadch project
+-- Re-used here under the MIT/X Consortium License
+--
+-- Modifications (C) 2008-2009 Matthew Wild, Waqas Hussain
+--
+
+-- // wrapping luadch stuff // --
+
+local use = function( what )
+ return _G[ what ]
+end
+local clean = function( tbl )
+ for i, k in pairs( tbl ) do
+ tbl[ i ] = nil
+ end
+end
+
+local log, table_concat = require ("util.logger").init("socket"), table.concat;
+local out_put = function (...) return log("debug", table_concat{...}); end
+local out_error = function (...) return log("warn", table_concat{...}); end
+local mem_free = collectgarbage
+
+----------------------------------// DECLARATION //--
+
+--// constants //--
+
+local STAT_UNIT = 1 -- byte
+
+--// lua functions //--
+
+local type = use "type"
+local pairs = use "pairs"
+local ipairs = use "ipairs"
+local tostring = use "tostring"
+local collectgarbage = use "collectgarbage"
+
+--// lua libs //--
+
+local os = use "os"
+local table = use "table"
+local string = use "string"
+local coroutine = use "coroutine"
+
+--// lua lib methods //--
+
+local os_time = os.time
+local os_difftime = os.difftime
+local table_concat = table.concat
+local table_remove = table.remove
+local string_len = string.len
+local string_sub = string.sub
+local coroutine_wrap = coroutine.wrap
+local coroutine_yield = coroutine.yield
+
+--// extern libs //--
+
+local luasec = use "ssl"
+local luasocket = use "socket" or require "socket"
+
+--// extern lib methods //--
+
+local ssl_wrap = ( luasec and luasec.wrap )
+local socket_bind = luasocket.bind
+local socket_sleep = luasocket.sleep
+local socket_select = luasocket.select
+local ssl_newcontext = ( luasec and luasec.newcontext )
+
+--// functions //--
+
+local id
+local loop
+local stats
+local idfalse
+local addtimer
+local closeall
+local addserver
+local getserver
+local wrapserver
+local getsettings
+local closesocket
+local removesocket
+local removeserver
+local changetimeout
+local wrapconnection
+local changesettings
+
+--// tables //--
+
+local _server
+local _readlist
+local _timerlist
+local _sendlist
+local _socketlist
+local _closelist
+local _readtimes
+local _writetimes
+
+--// simple data types //--
+
+local _
+local _readlistlen
+local _sendlistlen
+local _timerlistlen
+
+local _sendtraffic
+local _readtraffic
+
+local _selecttimeout
+local _sleeptime
+
+local _starttime
+local _currenttime
+
+local _maxsendlen
+local _maxreadlen
+
+local _checkinterval
+local _sendtimeout
+local _readtimeout
+
+local _cleanqueue
+
+local _timer
+
+local _maxclientsperserver
+
+----------------------------------// DEFINITION //--
+
+_server = { } -- key = port, value = table; list of listening servers
+_readlist = { } -- array with sockets to read from
+_sendlist = { } -- arrary with sockets to write to
+_timerlist = { } -- array of timer functions
+_socketlist = { } -- key = socket, value = wrapped socket (handlers)
+_readtimes = { } -- key = handler, value = timestamp of last data reading
+_writetimes = { } -- key = handler, value = timestamp of last data writing/sending
+_closelist = { } -- handlers to close
+
+_readlistlen = 0 -- length of readlist
+_sendlistlen = 0 -- length of sendlist
+_timerlistlen = 0 -- lenght of timerlist
+
+_sendtraffic = 0 -- some stats
+_readtraffic = 0
+
+_selecttimeout = 1 -- timeout of socket.select
+_sleeptime = 0 -- time to wait at the end of every loop
+
+_maxsendlen = 51000 * 1024 -- max len of send buffer
+_maxreadlen = 25000 * 1024 -- max len of read buffer
+
+_checkinterval = 1200000 -- interval in secs to check idle clients
+_sendtimeout = 60000 -- allowed send idle time in secs
+_readtimeout = 6 * 60 * 60 -- allowed read idle time in secs
+
+_cleanqueue = false -- clean bufferqueue after using
+
+_maxclientsperserver = 1000
+
+_maxsslhandshake = 30 -- max handshake round-trips
+
+----------------------------------// PRIVATE //--
+
+wrapserver = function( listeners, socket, ip, serverport, pattern, sslctx, maxconnections ) -- this function wraps a server
+
+ maxconnections = maxconnections or _maxclientsperserver
+
+ local connections = 0
+
+ local dispatch, disconnect = listeners.onincoming, listeners.ondisconnect
+
+ local accept = socket.accept
+
+ --// public methods of the object //--
+
+ local handler = { }
+
+ handler.shutdown = function( ) end
+
+ handler.ssl = function( )
+ return sslctx ~= nil
+ end
+ handler.sslctx = function( )
+ return sslctx
+ end
+ handler.remove = function( )
+ connections = connections - 1
+ end
+ handler.close = function( )
+ for _, handler in pairs( _socketlist ) do
+ if handler.serverport == serverport then
+ handler.disconnect( handler, "server closed" )
+ handler:close( true )
+ end
+ end
+ socket:close( )
+ _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+ _readlistlen = removesocket( _readlist, socket, _readlistlen )
+ _socketlist[ socket ] = nil
+ handler = nil
+ socket = nil
+ --mem_free( )
+ out_put "server.lua: closed server handler and removed sockets from list"
+ end
+ handler.ip = function( )
+ return ip
+ end
+ handler.serverport = function( )
+ return serverport
+ end
+ handler.socket = function( )
+ return socket
+ end
+ handler.readbuffer = function( )
+ if connections > maxconnections then
+ out_put( "server.lua: refused new client connection: server full" )
+ return false
+ end
+ local client, err = accept( socket ) -- try to accept
+ if client then
+ local ip, clientport = client:getpeername( )
+ client:settimeout( 0 )
+ local handler, client, err = wrapconnection( handler, listeners, client, ip, serverport, clientport, pattern, sslctx ) -- wrap new client socket
+ if err then -- error while wrapping ssl socket
+ return false
+ end
+ connections = connections + 1
+ out_put( "server.lua: accepted new client connection from ", tostring(ip), ":", tostring(clientport), " to ", tostring(serverport))
+ return dispatch( handler )
+ elseif err then -- maybe timeout or something else
+ out_put( "server.lua: error with new client connection: ", tostring(err) )
+ return false
+ end
+ end
+ return handler
+end
+
+wrapconnection = function( server, listeners, socket, ip, serverport, clientport, pattern, sslctx ) -- this function wraps a client to a handler object
+
+ socket:settimeout( 0 )
+
+ --// local import of socket methods //--
+
+ local send
+ local receive
+ local shutdown
+
+ --// private closures of the object //--
+
+ local ssl
+
+ local dispatch = listeners.onincoming
+ local status = listeners.onstatus
+ local disconnect = listeners.ondisconnect
+
+ local bufferqueue = { } -- buffer array
+ local bufferqueuelen = 0 -- end of buffer array
+
+ local toclose
+ local fatalerror
+ local needtls
+
+ local bufferlen = 0
+
+ local noread = false
+ local nosend = false
+
+ local sendtraffic, readtraffic = 0, 0
+
+ local maxsendlen = _maxsendlen
+ local maxreadlen = _maxreadlen
+
+ --// public methods of the object //--
+
+ local handler = bufferqueue -- saves a table ^_^
+
+ handler.dispatch = function( )
+ return dispatch
+ end
+ handler.disconnect = function( )
+ return disconnect
+ end
+ handler.setlistener = function( self, listeners )
+ dispatch = listeners.onincoming
+ disconnect = listeners.ondisconnect
+ status = listeners.onstatus
+ end
+ handler.getstats = function( )
+ return readtraffic, sendtraffic
+ end
+ handler.ssl = function( )
+ return ssl
+ end
+ handler.sslctx = function ( )
+ return sslctx
+ end
+ handler.send = function( _, data, i, j )
+ return send( socket, data, i, j )
+ end
+ handler.receive = function( pattern, prefix )
+ return receive( socket, pattern, prefix )
+ end
+ handler.shutdown = function( pattern )
+ return shutdown( socket, pattern )
+ end
+ handler.setoption = function (self, option, value)
+ if socket.setoption then
+ return socket:setoption(option, value);
+ end
+ return false, "setoption not implemented";
+ end
+ handler.close = function( self, forced )
+ if not handler then return true; end
+ _readlistlen = removesocket( _readlist, socket, _readlistlen )
+ _readtimes[ handler ] = nil
+ if bufferqueuelen ~= 0 then
+ if not ( forced or fatalerror ) then
+ handler.sendbuffer( )
+ if bufferqueuelen ~= 0 then -- try again...
+ if handler then
+ handler.write = nil -- ... but no further writing allowed
+ end
+ toclose = true
+ return false
+ end
+ else
+ send( socket, table_concat( bufferqueue, "", 1, bufferqueuelen ), 1, bufferlen ) -- forced send
+ end
+ end
+ if socket then
+ _ = shutdown and shutdown( socket )
+ socket:close( )
+ _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+ _socketlist[ socket ] = nil
+ socket = nil
+ else
+ out_put "server.lua: socket already closed"
+ end
+ if handler then
+ _writetimes[ handler ] = nil
+ _closelist[ handler ] = nil
+ handler = nil
+ end
+ if server then
+ server.remove( )
+ end
+ out_put "server.lua: closed client handler and removed socket from list"
+ return true
+ end
+ handler.ip = function( )
+ return ip
+ end
+ handler.serverport = function( )
+ return serverport
+ end
+ handler.clientport = function( )
+ return clientport
+ end
+ local write = function( self, data )
+ bufferlen = bufferlen + string_len( data )
+ if bufferlen > maxsendlen then
+ _closelist[ handler ] = "send buffer exceeded" -- cannot close the client at the moment, have to wait to the end of the cycle
+ handler.write = idfalse -- dont write anymore
+ return false
+ elseif socket and not _sendlist[ socket ] then
+ _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
+ end
+ bufferqueuelen = bufferqueuelen + 1
+ bufferqueue[ bufferqueuelen ] = data
+ if handler then
+ _writetimes[ handler ] = _writetimes[ handler ] or _currenttime
+ end
+ return true
+ end
+ handler.write = write
+ handler.bufferqueue = function( self )
+ return bufferqueue
+ end
+ handler.socket = function( self )
+ return socket
+ end
+ handler.pattern = function( self, new )
+ pattern = new or pattern
+ return pattern
+ end
+ handler.set_send = function ( self, newsend )
+ send = newsend or send
+ return send
+ end
+ handler.bufferlen = function( self, readlen, sendlen )
+ maxsendlen = sendlen or maxsendlen
+ maxreadlen = readlen or maxreadlen
+ return bufferlen, maxreadlen, maxsendlen
+ end
+ handler.lock_read = function (self, switch)
+ if switch == true then
+ local tmp = _readlistlen
+ _readlistlen = removesocket( _readlist, socket, _readlistlen )
+ _readtimes[ handler ] = nil
+ if _readlistlen ~= tmp then
+ noread = true
+ end
+ elseif switch == false then
+ if noread then
+ noread = false
+ _readlistlen = addsocket(_readlist, socket, _readlistlen)
+ _readtimes[ handler ] = _currenttime
+ end
+ end
+ return noread
+ end
+ handler.lock = function( self, switch )
+ handler.lock_read (switch)
+ if switch == true then
+ handler.write = idfalse
+ local tmp = _sendlistlen
+ _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+ _writetimes[ handler ] = nil
+ if _sendlistlen ~= tmp then
+ nosend = true
+ end
+ elseif switch == false then
+ handler.write = write
+ if nosend then
+ nosend = false
+ write( "" )
+ end
+ end
+ return noread, nosend
+ end
+ local _readbuffer = function( ) -- this function reads data
+ local buffer, err, part = receive( socket, pattern ) -- receive buffer with "pattern"
+ if not err or (err == "wantread" or err == "timeout") or string_len(part) > 0 then -- received something
+ local buffer = buffer or part or ""
+ local len = string_len( buffer )
+ if len > maxreadlen then
+ disconnect( handler, "receive buffer exceeded" )
+ handler.close( true )
+ return false
+ end
+ local count = len * STAT_UNIT
+ readtraffic = readtraffic + count
+ _readtraffic = _readtraffic + count
+ _readtimes[ handler ] = _currenttime
+ --out_put( "server.lua: read data '", buffer:gsub("[^%w%p ]", "."), "', error: ", err )
+ return dispatch( handler, buffer, err )
+ else -- connections was closed or fatal error
+ out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) )
+ fatalerror = true
+ disconnect( handler, err )
+ _ = handler and handler.close( )
+ return false
+ end
+ end
+ local _sendbuffer = function( ) -- this function sends data
+ local succ, err, byte, buffer, count;
+ local count;
+ if socket then
+ buffer = table_concat( bufferqueue, "", 1, bufferqueuelen )
+ succ, err, byte = send( socket, buffer, 1, bufferlen )
+ count = ( succ or byte or 0 ) * STAT_UNIT
+ sendtraffic = sendtraffic + count
+ _sendtraffic = _sendtraffic + count
+ _ = _cleanqueue and clean( bufferqueue )
+ --out_put( "server.lua: sended '", buffer, "', bytes: ", tostring(succ), ", error: ", tostring(err), ", part: ", tostring(byte), ", to: ", tostring(ip), ":", tostring(clientport) )
+ else
+ succ, err, count = false, "closed", 0;
+ end
+ if succ then -- sending succesful
+ bufferqueuelen = 0
+ bufferlen = 0
+ _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) -- delete socket from writelist
+ _ = needtls and handler:starttls(nil, true)
+ _writetimes[ handler ] = nil
+ _ = toclose and handler.close( )
+ return true
+ elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write
+ buffer = string_sub( buffer, byte + 1, bufferlen ) -- new buffer
+ bufferqueue[ 1 ] = buffer -- insert new buffer in queue
+ bufferqueuelen = 1
+ bufferlen = bufferlen - byte
+ _writetimes[ handler ] = _currenttime
+ return true
+ else -- connection was closed during sending or fatal error
+ out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) )
+ fatalerror = true
+ disconnect( handler, err )
+ _ = handler and handler.close( )
+ return false
+ end
+ end
+
+ -- Set the sslctx
+ local handshake;
+ function handler.set_sslctx(self, new_sslctx)
+ ssl = true
+ sslctx = new_sslctx;
+ local wrote
+ local read
+ handshake = coroutine_wrap( function( client ) -- create handshake coroutine
+ local err
+ for i = 1, _maxsslhandshake do
+ _sendlistlen = ( wrote and removesocket( _sendlist, client, _sendlistlen ) ) or _sendlistlen
+ _readlistlen = ( read and removesocket( _readlist, client, _readlistlen ) ) or _readlistlen
+ read, wrote = nil, nil
+ _, err = client:dohandshake( )
+ if not err then
+ out_put( "server.lua: ssl handshake done" )
+ handler.readbuffer = _readbuffer -- when handshake is done, replace the handshake function with regular functions
+ handler.sendbuffer = _sendbuffer
+ _ = status and status( handler, "ssl-handshake-complete" )
+ _readlistlen = addsocket(_readlist, client, _readlistlen)
+ return true
+ else
+ out_put( "server.lua: error during ssl handshake: ", tostring(err) )
+ if err == "wantwrite" and not wrote then
+ _sendlistlen = addsocket(_sendlist, client, _sendlistlen)
+ wrote = true
+ elseif err == "wantread" and not read then
+ _readlistlen = addsocket(_readlist, client, _readlistlen)
+ read = true
+ else
+ break;
+ end
+ --coroutine_yield( handler, nil, err ) -- handshake not finished
+ coroutine_yield( )
+ end
+ end
+ disconnect( handler, "ssl handshake failed" )
+ _ = handler and handler:close( true ) -- forced disconnect
+ return false -- handshake failed
+ end
+ )
+ end
+ if luasec then
+ if sslctx then -- ssl?
+ handler:set_sslctx(sslctx);
+ out_put("server.lua: ", "starting ssl handshake")
+ local err
+ socket, err = ssl_wrap( socket, sslctx ) -- wrap socket
+ if err then
+ out_put( "server.lua: ssl error: ", tostring(err) )
+ --mem_free( )
+ return nil, nil, err -- fatal error
+ end
+ socket:settimeout( 0 )
+ handler.readbuffer = handshake
+ handler.sendbuffer = handshake
+ handshake( socket ) -- do handshake
+ if not socket then
+ return nil, nil, "ssl handshake failed";
+ end
+ else
+ local sslctx;
+ handler.starttls = function( self, _sslctx, now )
+ if _sslctx then
+ sslctx = _sslctx;
+ handler:set_sslctx(sslctx);
+ end
+ if not now then
+ out_put "server.lua: we need to do tls, but delaying until later"
+ needtls = true
+ return
+ end
+ out_put( "server.lua: attempting to start tls on " .. tostring( socket ) )
+ local oldsocket, err = socket
+ socket, err = ssl_wrap( socket, sslctx ) -- wrap socket
+ --out_put( "server.lua: sslwrapped socket is " .. tostring( socket ) )
+ if err then
+ out_put( "server.lua: error while starting tls on client: ", tostring(err) )
+ return nil, err -- fatal error
+ end
+
+ socket:settimeout( 0 )
+
+ -- add the new socket to our system
+
+ send = socket.send
+ receive = socket.receive
+ shutdown = id
+
+ _socketlist[ socket ] = handler
+ _readlistlen = addsocket(_readlist, socket, _readlistlen)
+
+ -- remove traces of the old socket
+
+ _readlistlen = removesocket( _readlist, oldsocket, _readlistlen )
+ _sendlistlen = removesocket( _sendlist, oldsocket, _sendlistlen )
+ _socketlist[ oldsocket ] = nil
+
+ handler.starttls = nil
+ needtls = nil
+
+ -- Secure now
+ ssl = true
+
+ handler.readbuffer = handshake
+ handler.sendbuffer = handshake
+ handshake( socket ) -- do handshake
+ end
+ handler.readbuffer = _readbuffer
+ handler.sendbuffer = _sendbuffer
+ end
+ else
+ handler.readbuffer = _readbuffer
+ handler.sendbuffer = _sendbuffer
+ end
+ send = socket.send
+ receive = socket.receive
+ shutdown = ( ssl and id ) or socket.shutdown
+
+ _socketlist[ socket ] = handler
+ _readlistlen = addsocket(_readlist, socket, _readlistlen)
+
+ return handler, socket
+end
+
+id = function( )
+end
+
+idfalse = function( )
+ return false
+end
+
+addsocket = function( list, socket, len )
+ if not list[ socket ] then
+ len = len + 1
+ list[ len ] = socket
+ list[ socket ] = len
+ end
+ return len;
+end
+
+removesocket = function( list, socket, len ) -- this function removes sockets from a list ( copied from copas )
+ local pos = list[ socket ]
+ if pos then
+ list[ socket ] = nil
+ local last = list[ len ]
+ list[ len ] = nil
+ if last ~= socket then
+ list[ last ] = pos
+ list[ pos ] = last
+ end
+ return len - 1
+ end
+ return len
+end
+
+closesocket = function( socket )
+ _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+ _readlistlen = removesocket( _readlist, socket, _readlistlen )
+ _socketlist[ socket ] = nil
+ socket:close( )
+ --mem_free( )
+end
+
+----------------------------------// PUBLIC //--
+
+addserver = function( addr, port, listeners, pattern, sslctx ) -- this function provides a way for other scripts to reg a server
+ local err
+ if type( listeners ) ~= "table" then
+ err = "invalid listener table"
+ end
+ if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then
+ err = "invalid port"
+ elseif _server[ port ] then
+ err = "listeners on port '" .. port .. "' already exist"
+ elseif sslctx and not luasec then
+ err = "luasec not found"
+ end
+ if err then
+ out_error( "server.lua, port ", port, ": ", err )
+ return nil, err
+ end
+ addr = addr or "*"
+ local server, err = socket_bind( addr, port )
+ if err then
+ out_error( "server.lua, port ", port, ": ", err )
+ return nil, err
+ end
+ local handler, err = wrapserver( listeners, server, addr, port, pattern, sslctx, _maxclientsperserver ) -- wrap new server socket
+ if not handler then
+ server:close( )
+ return nil, err
+ end
+ server:settimeout( 0 )
+ _readlistlen = addsocket(_readlist, server, _readlistlen)
+ _server[ port ] = handler
+ _socketlist[ server ] = handler
+ out_put( "server.lua: new "..(sslctx and "ssl " or "").."server listener on '", addr, ":", port, "'" )
+ return handler
+end
+
+getserver = function ( port )
+ return _server[ port ];
+end
+
+removeserver = function( port )
+ local handler = _server[ port ]
+ if not handler then
+ return nil, "no server found on port '" .. tostring( port ) .. "'"
+ end
+ handler:close( )
+ _server[ port ] = nil
+ return true
+end
+
+closeall = function( )
+ for _, handler in pairs( _socketlist ) do
+ handler:close( )
+ _socketlist[ _ ] = nil
+ end
+ _readlistlen = 0
+ _sendlistlen = 0
+ _timerlistlen = 0
+ _server = { }
+ _readlist = { }
+ _sendlist = { }
+ _timerlist = { }
+ _socketlist = { }
+ --mem_free( )
+end
+
+getsettings = function( )
+ return _selecttimeout, _sleeptime, _maxsendlen, _maxreadlen, _checkinterval, _sendtimeout, _readtimeout, _cleanqueue, _maxclientsperserver, _maxsslhandshake
+end
+
+changesettings = function( new )
+ if type( new ) ~= "table" then
+ return nil, "invalid settings table"
+ end
+ _selecttimeout = tonumber( new.timeout ) or _selecttimeout
+ _sleeptime = tonumber( new.sleeptime ) or _sleeptime
+ _maxsendlen = tonumber( new.maxsendlen ) or _maxsendlen
+ _maxreadlen = tonumber( new.maxreadlen ) or _maxreadlen
+ _checkinterval = tonumber( new.checkinterval ) or _checkinterval
+ _sendtimeout = tonumber( new.sendtimeout ) or _sendtimeout
+ _readtimeout = tonumber( new.readtimeout ) or _readtimeout
+ _cleanqueue = new.cleanqueue
+ _maxclientsperserver = new._maxclientsperserver or _maxclientsperserver
+ _maxsslhandshake = new._maxsslhandshake or _maxsslhandshake
+ return true
+end
+
+addtimer = function( listener )
+ if type( listener ) ~= "function" then
+ return nil, "invalid listener function"
+ end
+ _timerlistlen = _timerlistlen + 1
+ _timerlist[ _timerlistlen ] = listener
+ return true
+end
+
+stats = function( )
+ return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen
+end
+
+local dontstop = true; -- thinking about tomorrow, ...
+
+setquitting = function (quit)
+ dontstop = not quit;
+ return;
+end
+
+loop = function( ) -- this is the main loop of the program
+ while dontstop do
+ local read, write, err = socket_select( _readlist, _sendlist, _selecttimeout )
+ for i, socket in ipairs( write ) do -- send data waiting in writequeues
+ local handler = _socketlist[ socket ]
+ if handler then
+ handler.sendbuffer( )
+ else
+ closesocket( socket )
+ out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen
+ end
+ end
+ for i, socket in ipairs( read ) do -- receive data
+ local handler = _socketlist[ socket ]
+ if handler then
+ handler.readbuffer( )
+ else
+ closesocket( socket )
+ out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen
+ end
+ end
+ for handler, err in pairs( _closelist ) do
+ handler.disconnect( )( handler, err )
+ handler:close( true ) -- forced disconnect
+ end
+ clean( _closelist )
+ _currenttime = os_time( )
+ if os_difftime( _currenttime - _timer ) >= 1 then
+ for i = 1, _timerlistlen do
+ _timerlist[ i ]( _currenttime ) -- fire timers
+ end
+ _timer = _currenttime
+ end
+ socket_sleep( _sleeptime ) -- wait some time
+ --collectgarbage( )
+ end
+ return "quitting"
+end
+
+local function get_backend()
+ return "select";
+end
+
+--// EXPERIMENTAL //--
+
+local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx )
+ local handler = wrapconnection( nil, listeners, socket, ip, serverport, "clientport", pattern, sslctx )
+ _socketlist[ socket ] = handler
+ _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
+ return handler, socket
+end
+
+local addclient = function( address, port, listeners, pattern, sslctx )
+ local client, err = luasocket.tcp( )
+ if err then
+ return nil, err
+ end
+ client:settimeout( 0 )
+ _, err = client:connect( address, port )
+ if err then -- try again
+ local handler = wrapclient( client, address, port, listeners )
+ else
+ wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx )
+ end
+end
+
+--// EXPERIMENTAL //--
+
+----------------------------------// BEGIN //--
+
+use "setmetatable" ( _socketlist, { __mode = "k" } )
+use "setmetatable" ( _readtimes, { __mode = "k" } )
+use "setmetatable" ( _writetimes, { __mode = "k" } )
+
+_timer = os_time( )
+_starttime = os_time( )
+
+addtimer( function( )
+ local difftime = os_difftime( _currenttime - _starttime )
+ if difftime > _checkinterval then
+ _starttime = _currenttime
+ for handler, timestamp in pairs( _writetimes ) do
+ if os_difftime( _currenttime - timestamp ) > _sendtimeout then
+ --_writetimes[ handler ] = nil
+ handler.disconnect( )( handler, "send timeout" )
+ handler:close( true ) -- forced disconnect
+ end
+ end
+ for handler, timestamp in pairs( _readtimes ) do
+ if os_difftime( _currenttime - timestamp ) > _readtimeout then
+ --_readtimes[ handler ] = nil
+ handler.disconnect( )( handler, "read timeout" )
+ handler:close( ) -- forced disconnect?
+ end
+ end
+ end
+ end
+)
+
+local function setlogger(new_logger)
+ local old_logger = log;
+ if new_logger then
+ log = new_logger;
+ end
+ return old_logger;
+end
+
+----------------------------------// PUBLIC INTERFACE //--
+
+return {
+
+ addclient = addclient,
+ wrapclient = wrapclient,
+
+ loop = loop,
+ stats = stats,
+ closeall = closeall,
+ addtimer = addtimer,
+ addserver = addserver,
+ getserver = getserver,
+ setlogger = setlogger,
+ getsettings = getsettings,
+ setquitting = setquitting,
+ removeserver = removeserver,
+ get_backend = get_backend,
+ changesettings = changesettings,
+}
diff --git a/net/xmppclient_listener.lua b/net/xmppclient_listener.lua
index 01d73a36..3a0c65be 100644
--- a/net/xmppclient_listener.lua
+++ b/net/xmppclient_listener.lua
@@ -27,8 +27,10 @@ local sm_streamopened = sessionmanager.streamopened;
local sm_streamclosed = sessionmanager.streamclosed;
local st = require "util.stanza";
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams\1stream",
- default_ns = "jabber:client",
+local config = require "core.configmanager";
+local opt_keepalives = config.get("*", "core", "tcp_keepalives");
+
+local stream_callbacks = { default_ns = "jabber:client",
streamopened = sm_streamopened, streamclosed = sm_streamclosed, handlestanza = core_process_stanza };
function stream_callbacks.error(session, error, data)
@@ -68,9 +70,8 @@ local function session_reset_stream(session)
return true;
end
-
local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
-local default_stream_attr = { ["xmlns:stream"] = stream_callbacks.stream_tag:match("[^\1]*"), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
+local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
local function session_close(session, reason)
local log = session.log or log;
if session.conn then
@@ -100,15 +101,15 @@ local function session_close(session, reason)
end
end
session.send("</stream:stream>");
- session.conn.close();
- xmppclient.disconnect(session.conn, (reason and (reason.text or reason.condition)) or reason or "session closed");
+ session.conn:close();
+ xmppclient.ondisconnect(session.conn, (reason and (reason.text or reason.condition)) or reason or "session closed");
end
end
-- End of session methods --
-function xmppclient.listener(conn, data)
+function xmppclient.onincoming(conn, data)
local session = sessions[conn];
if not session then
session = sm_new_session(conn);
@@ -117,10 +118,14 @@ function xmppclient.listener(conn, data)
session.log("info", "Client connected");
-- Client is using legacy SSL (otherwise mod_tls sets this flag)
- if conn.ssl() then
+ if conn:ssl() then
session.secure = true;
end
+ if opt_keepalives ~= nil then
+ conn:setoption("keepalive", opt_keepalives);
+ end
+
session.reset_stream = session_reset_stream;
session.close = session_close;
@@ -133,14 +138,13 @@ function xmppclient.listener(conn, data)
end
end
-function xmppclient.disconnect(conn, err)
+function xmppclient.ondisconnect(conn, err)
local session = sessions[conn];
if session then
(session.log or log)("info", "Client disconnected: %s", err);
sm_destroy_session(session, err);
sessions[conn] = nil;
session = nil;
- collectgarbage("collect");
end
end
diff --git a/net/xmppcomponent_listener.lua b/net/xmppcomponent_listener.lua
index c16f41a0..0b98b6bc 100644
--- a/net/xmppcomponent_listener.lua
+++ b/net/xmppcomponent_listener.lua
@@ -32,7 +32,7 @@ local xmlns_component = 'jabber:component:accept';
--- Callbacks/data for xmlhandlers to handle streams for us ---
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams\1stream", default_ns = xmlns_component };
+local stream_callbacks = { default_ns = xmlns_component };
function stream_callbacks.error(session, error, data, data2)
log("warn", "Error processing component stream: "..tostring(error));
@@ -87,7 +87,7 @@ end
--- Closing a component connection
local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
-local default_stream_attr = { ["xmlns:stream"] = stream_callbacks.stream_tag:match("[^\1]*"), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
+local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
local function session_close(session, reason)
local log = session.log or log;
if session.conn then
@@ -117,17 +117,17 @@ local function session_close(session, reason)
end
end
session.send("</stream:stream>");
- session.conn.close();
- component_listener.disconnect(session.conn, "stream error");
+ session.conn:close();
+ component_listener.ondisconnect(session.conn, "stream error");
end
end
--- Component connlistener
-function component_listener.listener(conn, data)
+function component_listener.onincoming(conn, data)
local session = sessions[conn];
if not session then
local _send = conn.write;
- session = { type = "component", conn = conn, send = function (data) return _send(tostring(data)); end };
+ session = { type = "component", conn = conn, send = function (data) return _send(conn, tostring(data)); end };
sessions[conn] = session;
-- Logging functions --
@@ -157,7 +157,7 @@ function component_listener.listener(conn, data)
end
end
-function component_listener.disconnect(conn, err)
+function component_listener.ondisconnect(conn, err)
local session = sessions[conn];
if session then
(session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err));
@@ -169,7 +169,6 @@ function component_listener.disconnect(conn, err)
sessions[conn] = nil;
for k in pairs(session) do session[k] = nil; end
session = nil;
- collectgarbage("collect");
end
end
diff --git a/net/xmppserver_listener.lua b/net/xmppserver_listener.lua
index c7e02ec5..c9746ee1 100644
--- a/net/xmppserver_listener.lua
+++ b/net/xmppserver_listener.lua
@@ -17,16 +17,34 @@ local s2s_streamopened = require "core.s2smanager".streamopened;
local s2s_streamclosed = require "core.s2smanager".streamclosed;
local s2s_destroy_session = require "core.s2smanager".destroy_session;
local s2s_attempt_connect = require "core.s2smanager".attempt_connection;
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams\1stream",
- default_ns = "jabber:server",
+local stream_callbacks = { default_ns = "jabber:server",
streamopened = s2s_streamopened, streamclosed = s2s_streamclosed, handlestanza = core_process_stanza };
+local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
+
function stream_callbacks.error(session, error, data)
if error == "no-stream" then
session:close("invalid-namespace");
- else
+ elseif error == "parse-error" then
session.log("debug", "Server-to-server XML parse error: %s", tostring(error));
session:close("xml-not-well-formed");
+ elseif error == "stream-error" then
+ local condition, text = "undefined-condition";
+ for child in data:children() do
+ if child.attr.xmlns == xmlns_xmpp_streams then
+ if child.name ~= "text" then
+ condition = child.name;
+ else
+ text = child:get_text();
+ end
+ if condition ~= "undefined-condition" and text then
+ break;
+ end
+ end
+ end
+ text = condition .. (text and (" ("..text..")") or "");
+ session.log("info", "Session closed by remote with error: %s", text);
+ session:close(nil, text);
end
end
@@ -70,8 +88,8 @@ local function session_reset_stream(session)
end
local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
-local default_stream_attr = { ["xmlns:stream"] = stream_callbacks.stream_tag:match("[^\1]*"), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
-local function session_close(session, reason)
+local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
+local function session_close(session, reason, remote_reason)
local log = session.log or log;
if session.conn then
if session.notopen then
@@ -100,18 +118,18 @@ local function session_close(session, reason)
end
end
session.sends2s("</stream:stream>");
- if session.notopen or not session.conn.close() then
- session.conn.close(true); -- Force FIXME: timer?
+ if session.notopen or not session.conn:close() then
+ session.conn:close(true); -- Force FIXME: timer?
end
- session.conn.close();
- xmppserver.disconnect(session.conn, "stream error");
+ session.conn:close();
+ xmppserver.ondisconnect(session.conn, remote_reason or (reason and (reason.text or reason.condition)) or reason or "stream closed");
end
end
-- End of session methods --
-function xmppserver.listener(conn, data)
+function xmppserver.onincoming(conn, data)
local session = sessions[conn];
if not session then
session = s2s_new_incoming(conn);
@@ -137,7 +155,7 @@ function xmppserver.listener(conn, data)
end
end
-function xmppserver.status(conn, status)
+function xmppserver.onstatus(conn, status)
if status == "ssl-handshake-complete" then
local session = sessions[conn];
if session and session.direction == "outgoing" then
@@ -148,21 +166,20 @@ function xmppserver.status(conn, status)
end
end
-function xmppserver.disconnect(conn, err)
+function xmppserver.ondisconnect(conn, err)
local session = sessions[conn];
if session then
if err and err ~= "closed" and session.srv_hosts then
- (session.log or log)("debug", "s2s connection closed unexpectedly");
+ (session.log or log)("debug", "s2s connection attempt failed: %s", err);
if s2s_attempt_connect(session, err) then
- (session.log or log)("debug", "...so we're going to try again");
+ (session.log or log)("debug", "...so we're going to try another target");
return; -- Session lives for now
end
end
(session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err));
- s2s_destroy_session(session);
+ s2s_destroy_session(session, err);
sessions[conn] = nil;
session = nil;
- collectgarbage("collect");
end
end
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 11:56:57 +0000