aboutsummaryrefslogtreecommitdiffstats
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/adns.lua20
-rw-r--r--net/connlisteners.lua15
-rw-r--r--net/dns.lua17
-rw-r--r--net/http.lua79
-rw-r--r--net/http/codes.lua12
-rw-r--r--net/http/server.lua40
-rw-r--r--net/httpserver.lua11
-rw-r--r--net/server.lua2
-rw-r--r--net/server_event.lua285
-rw-r--r--net/server_select.lua97
-rw-r--r--net/websocket.lua272
-rw-r--r--net/websocket/frames.lua220
12 files changed, 778 insertions, 292 deletions
diff --git a/net/adns.lua b/net/adns.lua
index 3fc958f4..d3da2065 100644
--- a/net/adns.lua
+++ b/net/adns.lua
@@ -1,7 +1,7 @@
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
@@ -16,9 +16,9 @@ local coroutine, tostring, pcall = coroutine, tostring, pcall;
local function dummy_send(sock, data, i, j) return (j-i)+1; end
-module "adns"
+local _ENV = nil;
-function lookup(handler, qname, qtype, qclass)
+local function lookup(handler, qname, qtype, qclass)
return coroutine.wrap(function (peek)
if peek then
log("debug", "Records for %s already cached, using those...", qname);
@@ -43,12 +43,12 @@ function lookup(handler, qname, qtype, qclass)
end)(dns.peek(qname, qtype, qclass));
end
-function cancel(handle, call_handler, reason)
+local function cancel(handle, call_handler, reason)
log("warn", "Cancelling DNS lookup for %s", tostring(handle[3]));
dns.cancel(handle[1], handle[2], handle[3], handle[4], call_handler);
end
-function new_async_socket(sock, resolver)
+local function new_async_socket(sock, resolver)
local peername = "<unknown>";
local listener = {};
local handler = {};
@@ -65,7 +65,7 @@ function new_async_socket(sock, resolver)
if resolver.socketset[conn] == resolver.best_server and resolver.best_server == #servers then
log("error", "Exhausted all %d configured DNS servers, next lookup will try %s again", #servers, servers[1]);
end
-
+
resolver:servfail(conn); -- Let the magic commence
end
end
@@ -73,7 +73,7 @@ function new_async_socket(sock, resolver)
if not handler then
return nil, err;
end
-
+
handler.settimeout = function () end
handler.setsockname = function (_, ...) return sock:setsockname(...); end
handler.setpeername = function (_, ...) peername = (...); local ret, err = sock:setpeername(...); _:set_send(dummy_send); return ret, err; end
@@ -88,4 +88,8 @@ end
dns.socket_wrapper_set(new_async_socket);
-return _M;
+return {
+ lookup = lookup;
+ cancel = cancel;
+ new_async_socket = new_async_socket;
+};
diff --git a/net/connlisteners.lua b/net/connlisteners.lua
index 99ddc720..000bfa63 100644
--- a/net/connlisteners.lua
+++ b/net/connlisteners.lua
@@ -2,14 +2,17 @@
local log = require "util.logger".init("net.connlisteners");
local traceback = debug.traceback;
-module "httpserver"
+local _ENV = nil;
-function fail()
+local function fail()
log("error", "Attempt to use legacy connlisteners API. For more info see http://prosody.im/doc/developers/network");
log("error", "Legacy connlisteners API usage, %s", traceback("", 2));
end
-register, deregister = fail, fail;
-get, start = fail, fail, epic_fail;
-
-return _M;
+return {
+ register = fail;
+ register = fail;
+ get = fail;
+ start = fail;
+ -- epic fail
+};
diff --git a/net/dns.lua b/net/dns.lua
index d123731c..b047ec54 100644
--- a/net/dns.lua
+++ b/net/dns.lua
@@ -71,8 +71,8 @@ local get, set = ztact.get, ztact.set;
local default_timeout = 15;
-------------------------------------------------- module dns
-module('dns')
-local dns = _M;
+local _ENV = nil;
+local dns = {};
-- dns type & class codes ------------------------------ dns type & class codes
@@ -213,15 +213,6 @@ function cache_metatable.__tostring(cache)
end
-function resolver:new() -- - - - - - - - - - - - - - - - - - - - - resolver
- local r = { active = {}, cache = {}, unsorted = {} };
- setmetatable(r, resolver);
- setmetatable(r.cache, cache_metatable);
- setmetatable(r.unsorted, { __mode = 'kv' });
- return r;
-end
-
-
-- packet layer -------------------------------------------------- packet layer
@@ -629,7 +620,7 @@ function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket
if peer:find(":") then
sock, err = socket.udp6();
else
- sock, err = socket.udp();
+ sock, err = (socket.udp4 or socket.udp)();
end
if sock and self.socket_wrapper then sock, err = self.socket_wrapper(sock, self); end
if not sock then
@@ -1054,8 +1045,6 @@ end
function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver
- -- this function seems to be redundant with resolver.new ()
-
local r = { active = {}, cache = {}, unsorted = {}, wanted = {}, best_server = 1 };
setmetatable (r, resolver);
setmetatable (r.cache, cache_metatable);
diff --git a/net/http.lua b/net/http.lua
index 8ce47494..b78f8438 100644
--- a/net/http.lua
+++ b/net/http.lua
@@ -1,12 +1,11 @@
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
-local socket = require "socket"
local b64 = require "util.encodings".base64.encode;
local url = require "socket.url"
local httpstream_new = require "net.http.parser".new;
@@ -24,7 +23,7 @@ local assert, error = assert, error
local log = require "util.logger".init("http");
-module "http"
+local _ENV = nil;
local requests = {}; -- Open requests
@@ -37,7 +36,7 @@ function listener.onconnect(conn)
if req.query then
t_insert(request_line, 4, "?"..req.query);
end
-
+
conn:write(t_concat(request_line));
local t = { [2] = ": ", [4] = "\r\n" };
for k, v in pairs(req.headers) do
@@ -45,7 +44,7 @@ function listener.onconnect(conn)
conn:write(t_concat(t));
end
conn:write("\r\n");
-
+
if req.body then
conn:write(req.body);
end
@@ -76,6 +75,13 @@ function listener.ondetach(conn)
requests[conn] = nil;
end
+local function destroy_request(request)
+ if request.conn then
+ request.conn = nil;
+ request.handler:close()
+ end
+end
+
local function request_reader(request, data, err)
if not request.parser then
local function error_cb(reason)
@@ -85,12 +91,12 @@ local function request_reader(request, data, err)
end
destroy_request(request);
end
-
+
if not data then
error_cb(err);
return;
end
-
+
local function success_cb(r)
if request.callback then
request.callback(r.body, r.code, r, request);
@@ -107,20 +113,20 @@ local function request_reader(request, data, err)
end
local function handleerr(err) log("error", "Traceback[http]: %s", traceback(tostring(err), 2)); end
-function request(u, ex, callback)
+local function request(u, ex, callback)
local req = url.parse(u);
-
+
if not (req and req.host) then
callback(nil, 0, req);
return nil, "invalid-url";
end
-
+
if not req.path then
req.path = "/";
end
-
+
local method, headers, body;
-
+
local host, port = req.host, req.port;
local host_header = host;
if (port == "80" and req.scheme == "http")
@@ -134,7 +140,7 @@ function request(u, ex, callback)
["Host"] = host_header;
["User-Agent"] = "Prosody XMPP Server";
};
-
+
if req.userinfo then
headers["Authorization"] = "Basic "..b64(req.userinfo);
end
@@ -154,33 +160,29 @@ function request(u, ex, callback)
end
end
end
-
+
-- Attach to request object
req.method, req.headers, req.body = method, headers, body;
-
+
local using_https = req.scheme == "https";
if using_https and not ssl_available then
error("SSL not available, unable to contact https URL");
end
local port_number = port and tonumber(port) or (using_https and 443 or 80);
-
- -- Connect the socket, and wrap it with net.server
- local conn = socket.tcp();
- conn:settimeout(10);
- local ok, err = conn:connect(host, port_number);
- if not ok and err ~= "timeout" then
- callback(nil, 0, req);
- return nil, err;
- end
-
+
local sslctx = false;
if using_https then
sslctx = ex and ex.sslctx or { mode = "client", protocol = "sslv23", options = { "no_sslv2", "no_sslv3" } };
end
- req.handler, req.conn = assert(server.wrapclient(conn, host, port_number, listener, "*a", sslctx));
+ local handler, conn = server.addclient(host, port_number, listener, "*a", sslctx)
+ if not handler then
+ callback(nil, 0, req);
+ return nil, conn;
+ end
+ req.handler, req.conn = handler, conn
req.write = function (...) return req.handler:write(...); end
-
+
req.callback = function (content, code, request, response) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request, response) end, handleerr)); end
req.reader = request_reader;
req.state = "status";
@@ -189,17 +191,12 @@ function request(u, ex, callback)
return req;
end
-function destroy_request(request)
- if request.conn then
- request.conn = nil;
- request.handler:close()
- end
-end
-
-local urlencode, urldecode = util_http.urlencode, util_http.urldecode;
-local formencode, formdecode = util_http.formencode, util_http.formdecode;
-
-_M.urlencode, _M.urldecode = urlencode, urldecode;
-_M.formencode, _M.formdecode = formencode, formdecode;
-
-return _M;
+return {
+ request = request;
+
+ -- COMPAT
+ urlencode = util_http.urlencode;
+ urldecode = util_http.urldecode;
+ formencode = util_http.formencode;
+ formdecode = util_http.formdecode;
+};
diff --git a/net/http/codes.lua b/net/http/codes.lua
index 0cadd079..bc31c7dd 100644
--- a/net/http/codes.lua
+++ b/net/http/codes.lua
@@ -25,6 +25,7 @@ local response_codes = {
[305] = "Use Proxy";
-- The 306 status code was used in a previous version of [RFC2616], is no longer used, and the code is reserved.
[307] = "Temporary Redirect";
+ [308] = "Permanent Redirect";
[400] = "Bad Request";
[401] = "Unauthorized";
@@ -39,17 +40,21 @@ local response_codes = {
[410] = "Gone";
[411] = "Length Required";
[412] = "Precondition Failed";
- [413] = "Request Entity Too Large";
- [414] = "Request-URI Too Long";
+ [413] = "Payload Too Large";
+ [414] = "URI Too Long";
[415] = "Unsupported Media Type";
- [416] = "Requested Range Not Satisfiable";
+ [416] = "Range Not Satisfiable";
[417] = "Expectation Failed";
[418] = "I'm a teapot";
+ [421] = "Misdirected Request";
[422] = "Unprocessable Entity";
[423] = "Locked";
[424] = "Failed Dependency";
-- The 425 status code is reserved for the WebDAV advanced collections expired proposal [RFC2817]
[426] = "Upgrade Required";
+ [428] = "Precondition Required";
+ [429] = "Too Many Requests";
+ [431] = "Request Header Fields Too Large";
[500] = "Internal Server Error";
[501] = "Not Implemented";
@@ -61,6 +66,7 @@ local response_codes = {
[507] = "Insufficient Storage";
[508] = "Loop Detected";
[510] = "Not Extended";
+ [511] = "Network Authentication Required";
};
for k,v in pairs(response_codes) do response_codes[k] = k.." "..v; end
diff --git a/net/http/server.lua b/net/http/server.lua
index f091595c..aeaa7416 100644
--- a/net/http/server.lua
+++ b/net/http/server.lua
@@ -11,6 +11,7 @@ local setmetatable = setmetatable;
local xpcall = xpcall;
local traceback = debug.traceback;
local tostring = tostring;
+local cache = require "util.cache";
local codes = require "net.http.codes";
local _M = {};
@@ -27,7 +28,10 @@ local function is_wildcard_match(wildcard_event, event)
return wildcard_event:sub(1, -2) == event:sub(1, #wildcard_event-1);
end
-local recent_wildcard_events, max_cached_wildcard_events = {}, 10000;
+local _handlers = events._handlers;
+local recent_wildcard_events = cache.new(10000, function (key, value)
+ rawset(_handlers, key, nil);
+end);
local event_map = events._event_map;
setmetatable(events._handlers, {
@@ -62,10 +66,7 @@ setmetatable(events._handlers, {
end
rawset(handlers, curr_event, handlers_array);
if not event_map[curr_event] then -- Only wildcard handlers match, if any
- table.insert(recent_wildcard_events, curr_event);
- if #recent_wildcard_events > max_cached_wildcard_events then
- rawset(handlers, table.remove(recent_wildcard_events, 1), nil);
- end
+ recent_wildcard_events:set(curr_event, true);
end
return handlers_array;
end;
@@ -189,6 +190,7 @@ function handle_request(conn, request, finish_cb)
persistent = persistent;
conn = conn;
send = _M.send_response;
+ done = _M.finish_response;
finish_cb = finish_cb;
};
conn._http_open_response = response;
@@ -208,7 +210,7 @@ function handle_request(conn, request, finish_cb)
err_code, err = 400, "Missing or invalid 'Host' header";
end
end
-
+
if err then
response.status_code = err_code;
response:send(events.fire_event("http-error", { code = err_code, message = err }));
@@ -250,24 +252,30 @@ function handle_request(conn, request, finish_cb)
response.status_code = 404;
response:send(events.fire_event("http-error", { code = 404 }));
end
-function _M.send_response(response, body)
- if response.finished then return; end
- response.finished = true;
- response.conn._http_open_response = nil;
-
+local function prepare_header(response)
local status_line = "HTTP/"..response.request.httpversion.." "..(response.status or codes[response.status_code]);
local headers = response.headers;
- body = body or response.body or "";
- headers.content_length = #body;
-
local output = { status_line };
for k,v in pairs(headers) do
t_insert(output, headerfix[k]..v);
end
t_insert(output, "\r\n\r\n");
+ return output;
+end
+_M.prepare_header = prepare_header;
+function _M.send_response(response, body)
+ if response.finished then return; end
+ body = body or response.body or "";
+ response.headers.content_length = #body;
+ local output = prepare_header(response);
t_insert(output, body);
-
response.conn:write(t_concat(output));
+ response:done();
+end
+function _M.finish_response(response)
+ if response.finished then return; end
+ response.finished = true;
+ response.conn._http_open_response = nil;
if response.on_destroy then
response:on_destroy();
response.on_destroy = nil;
@@ -286,7 +294,7 @@ function _M.remove_handler(event, handler)
end
function _M.listen_on(port, interface, ssl)
- addserver(interface or "*", port, listener, "*a", ssl);
+ return addserver(interface or "*", port, listener, "*a", ssl);
end
function _M.add_host(host)
hosts[host] = true;
diff --git a/net/httpserver.lua b/net/httpserver.lua
index 7d574788..6e2e31b9 100644
--- a/net/httpserver.lua
+++ b/net/httpserver.lua
@@ -2,14 +2,15 @@
local log = require "util.logger".init("net.httpserver");
local traceback = debug.traceback;
-module "httpserver"
+local _ENV = nil;
function fail()
log("error", "Attempt to use legacy HTTP API. For more info see http://prosody.im/doc/developers/legacy_http");
log("error", "Legacy HTTP API usage, %s", traceback("", 2));
end
-new, new_from_config = fail, fail;
-set_default_handler = fail;
-
-return _M;
+return {
+ new = fail;
+ new_from_config = fail;
+ set_default_handler = fail;
+};
diff --git a/net/server.lua b/net/server.lua
index 9b0d27e1..41e180fa 100644
--- a/net/server.lua
+++ b/net/server.lua
@@ -1,7 +1,7 @@
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
diff --git a/net/server_event.lua b/net/server_event.lua
index d505825d..70a6dc37 100644
--- a/net/server_event.lua
+++ b/net/server_event.lua
@@ -11,6 +11,7 @@
-- when using luasec, there are 4 cases of timeout errors: wantread or wantwrite during reading or writing
--]]
+-- luacheck: ignore 212/self 431/err 211/ret
local SCRIPT_NAME = "server_event.lua"
local SCRIPT_VERSION = "0.05"
@@ -32,27 +33,32 @@ local cfg = {
DEBUG = true, -- show debug messages
}
-local function use(x) return rawget(_G, x); end
-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 pairs = pairs
+local select = select
+local require = require
+local tostring = tostring
+local setmetatable = setmetatable
local t_insert = table.insert
local t_concat = table.concat
+local s_sub = string.sub
-local ssl = use "ssl"
-local socket = use "socket" or require "socket"
+local coroutine_wrap = coroutine.wrap
+local coroutine_yield = coroutine.yield
+
+local has_luasec, ssl = pcall ( require , "ssl" )
+local socket = require "socket"
+local levent = require "luaevent.core"
+
+local socket_gettime = socket.gettime
+local getaddrinfo = socket.dns.getaddrinfo
local log = require ("util.logger").init("socket")
local function debug(...)
return log("debug", ("%s "):rep(select('#', ...)), ...)
end
-local vdebug = debug;
+-- local vdebug = debug;
local bitor = ( function( ) -- thx Rici Lake
local hasbit = function( x, p )
@@ -72,62 +78,25 @@ local bitor = ( function( ) -- thx Rici Lake
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 base = levent.new( )
+local addevent = base.addevent
+local EV_READ = levent.EV_READ
+local EV_WRITE = levent.EV_WRITE
+local EV_TIMEOUT = levent.EV_TIMEOUT
+local EV_SIGNAL = levent.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 )( )
+local interfacelist = { }
-- 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 interface_mt = {}; interface_mt.__index = interface_mt;
+
-- Private methods
- function interface_mt:_position(new_position)
- self.position = new_position or self.position
- return self.position;
- end
function interface_mt:_close()
return self:_destroy();
end
-
+
function interface_mt:_start_connection(plainssl) -- should be called from addclient
local callback = function( event )
if EV_TIMEOUT == event then -- timeout during connection
@@ -136,7 +105,7 @@ do
self:_close()
debug( "new connection failed. id:", self.id, "error:", self.fatalerror )
else
- if plainssl and ssl then -- start ssl session
+ if plainssl and has_luasec then -- start ssl session
self:starttls(self._sslctx, true)
else -- normal connection
self:_start_session(true)
@@ -188,8 +157,7 @@ do
return false
end
self.conn:settimeout( 0 ) -- set non blocking
- local handshakecallback = coroutine_wrap(
- function( event )
+ local handshakecallback = coroutine_wrap(function( event )
local _, err
local attempt = 0
local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPTS
@@ -265,15 +233,15 @@ do
self.eventread, self.eventclose = nil, nil
self.interface, self.readcallback = nil, nil
end
- interfacelist( "delete", self )
+ interfacelist[ self ] = nil
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
-
+
--TODO: Deprecate
function interface_mt:lock_read(switch)
if switch then
@@ -301,7 +269,7 @@ do
end
return self._connections
end
-
+
-- Public methods
function interface_mt:write(data)
if self.nowriting then return nil, "locked" end
@@ -344,27 +312,27 @@ do
return true
end
end
-
+
function interface_mt:socket()
return self.conn
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
@@ -373,15 +341,15 @@ do
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
@@ -397,11 +365,11 @@ do
end
return self._pattern;
end
-
- function interface_mt:set_send(new_send)
+
+function interface_mt:set_send(new_send) -- luacheck: ignore 212
-- No-op, we always use the underlying connection's send
end
-
+
function interface_mt:starttls(sslctx, call_onconnect)
debug( "try to start ssl at client id:", self.id )
local err
@@ -430,22 +398,22 @@ do
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:ondetach(); -- Notify listener that it is no longer responsible for this connection
- self.onconnect, self.ondisconnect, self.onincoming,
- self.ontimeout, self.onstatus, self.ondetach
- = listener.onconnect, listener.ondisconnect, listener.onincoming,
- listener.ontimeout, listener.onstatus, listener.ondetach;
+ self.onconnect, self.ondisconnect, self.onincoming, self.ontimeout,
+ self.onreadtimeout, self.onstatus, self.ondetach
+ = listener.onconnect, listener.ondisconnect, listener.onincoming, listener.ontimeout,
+ listener.onreadtimeout, listener.onstatus, listener.ondetach;
end
-
+
-- Stub handlers
function interface_mt:onconnect()
end
@@ -455,22 +423,22 @@ do
end
function interface_mt:ontimeout()
end
+function interface_mt:onreadtimeout()
+ self.fatalerror = "timeout during receiving"
+ debug( "connection failed:", self.fatalerror )
+ self:_close()
+ self.eventread = nil
+end
function interface_mt:ondrain()
end
function interface_mt:ondetach()
end
function interface_mt:onstatus()
end
-end
-- End of client interface methods
-local handleclient;
-do
- local string_sub = string.sub -- caching table lookups
- local addevent = base.addevent
- local socket_gettime = socket.gettime
- function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface
+local function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface
--vdebug("creating client interfacce...")
local interface = {
type = "client";
@@ -484,6 +452,7 @@ do
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
+ onreadtimeout = listener.onreadtimeout; -- called when socket inactivity timeout occurs
ondrain = listener.ondrain; -- called when writebuffer is empty
ondetach = listener.ondetach; -- called when disassociating this listener from this connection
onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS)
@@ -499,14 +468,14 @@ do
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
+ if not has_luasec 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 )
@@ -552,7 +521,7 @@ do
return -1
elseif byte and (err == "timeout" or err == "wantwrite") then -- want write again
--vdebug( "writebuffer is not empty:", err )
- interface.writebuffer[1] = string_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer
+ interface.writebuffer[1] = s_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer
interface.writebufferlen = interface.writebufferlen - byte
if "wantread" == err then -- happens only with luasec
local callback = function( )
@@ -575,7 +544,7 @@ do
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
@@ -583,13 +552,9 @@ do
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 EV_TIMEOUT == event and interface:onreadtimeout() ~= true then
+ return -1 -- took too long to get some data from client -> disconnect
+ end
if interface._usingssl then -- handle luasec
if interface.eventwritetimeout then -- ok, in the past writecallback was regged
local ret = interface.writecallback( ) -- call it
@@ -638,22 +603,19 @@ do
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
+ interfacelist[ interface ] = true -- add to interfacelist
return interface
end
-end
-local handleserver
-do
- function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface
+local function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface
debug "creating server interface..."
local interface = {
_connections = 0;
-
+
+ type = "server";
conn = server;
onconnect = listener.onconnect; -- will be called when new client connected
eventread = false; -- read event handler
@@ -661,7 +623,7 @@ do
readcallback = false; -- read event callback
fatalerror = false; -- error message
nointerface = true; -- lock/unlock parameter
-
+
_ip = addr, _port = port, _pattern = pattern,
_sslctx = sslctx;
}
@@ -694,92 +656,77 @@ do
interface._connections = interface._connections + 1 -- increase connection count
local clientinterface = handleclient( client, client_ip, client_port, interface, pattern, listener, sslctx )
--vdebug( "client id:", clientinterface, "startssl:", startssl )
- if ssl and sslctx then
+ if has_luasec and sslctx then
clientinterface:starttls(sslctx, true)
else
clientinterface:_start_session( true )
end
debug( "accepted incoming client connection from:", client_ip or "<unknown IP>", client_port or "<unknown port>", "to", port or "<unknown port>");
-
+
client, err = server:accept() -- try to accept again
end
return EV_READ
end
-
+
server:settimeout( 0 )
setmetatable(interface, interface_mt)
- interfacelist( "add", interface )
+ interfacelist[ interface ] = true
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 function addserver( addr, port, listener, pattern, sslctx, startssl ) -- TODO: check arguments
+ --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslctx or "nil", startssl or "nil")
+ if sslctx and not has_luasec then
+ debug "fatal error: luasec not found"
+ return nil, "luasec not found"
+end
local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket
if not server then
debug( "creating server socket on "..addr.." port "..port.." failed:", 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 )
+local function wrapclient( client, ip, port, listeners, pattern, sslctx )
local interface = handleclient( client, ip, port, nil, pattern, listeners, sslctx )
interface:_start_connection(sslctx)
return interface, client
--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
+
+local function addclient( addr, serverport, listener, pattern, sslctx, typ )
+ if sslctx and not has_luasec then
+ debug "need luasec, but not available"
+ return nil, "luasec not found"
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
+ if not typ then
+ local addrinfo, err = getaddrinfo(addr)
+ if not addrinfo then return nil, err end
+ if addrinfo[1] and addrinfo[1].family == "inet6" then
+ typ = "tcp6"
+ else
+ typ = "tcp"
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"
+ local create = socket[typ]
+ if type( create ) ~= "function" then
+ return nil, "invalid socket type"
end
- sslctx, err = sslcfg
- if err then
- debug( "cannot create new ssl context:", err )
+ local client, err = create() -- creating new socket
+ if not client then
+ debug( "cannot create socket:", err )
return nil, err
end
- end
+ client:settimeout( 0 ) -- set nonblocking
local res, err = client:connect( addr, serverport ) -- connect
if res or ( err == "timeout" ) then
local ip, port = client:getsockname( )
- local interface = wrapclient( client, ip, serverport, listener, pattern, sslctx, startssl )
- interface:_start_connection( startssl )
+ local interface = wrapclient( client, ip, serverport, listener, pattern, sslctx )
+ interface:_start_connection( sslctx )
debug( "new connection id:", interface.id )
return interface, err
else
@@ -787,23 +734,18 @@ do
return nil, err
end
end
-end
-
-local loop = function( ) -- starts the event loop
+local function loop( ) -- starts the event loop
base:loop( )
return "quitting";
end
-local newevent = ( function( )
- local add = base.addevent
- return function( ... )
- return add( base, ... )
+local function newevent( ... )
+ return addevent( base, ... )
end
-end )( )
-local closeallservers = function( arg )
- for _, item in ipairs( interfacelist( ) ) do
+local function closeallservers ( arg )
+ for item in pairs( interfacelist ) do
if item.type == "server" then
item:close( arg )
end
@@ -826,7 +768,7 @@ end
-- being garbage-collected
local signal_events = {}; -- [signal_num] -> event object
local function hook_signal(signal_num, handler)
- local function _handler(event)
+ local function _handler()
local ret = handler();
if ret ~= false then -- Continue handling this signal?
return EV_SIGNAL; -- Yes
@@ -839,14 +781,14 @@ end
local function link(sender, receiver, buffersize)
local sender_locked;
-
+
function receiver:ondrain()
if sender_locked then
sender:resume();
sender_locked = nil;
end
end
-
+
function sender:onincoming(data)
receiver:write(data);
if receiver.writebufferlen >= buffersize then
@@ -858,12 +800,11 @@ local function link(sender, receiver, buffersize)
end
return {
-
cfg = cfg,
base = base,
loop = loop,
link = link,
- event = event,
+ event = levent,
event_base = base,
addevent = newevent,
addserver = addserver,
diff --git a/net/server_select.lua b/net/server_select.lua
index c50a6ce1..52a0d5f1 100644
--- a/net/server_select.lua
+++ b/net/server_select.lua
@@ -1,7 +1,7 @@
---
+--
-- server.lua by blastbeat of the luadch project
-- Re-used here under the MIT/X Consortium License
---
+--
-- Modifications (C) 2008-2010 Matthew Wild, Waqas Hussain
--
@@ -48,13 +48,14 @@ local coroutine_yield = coroutine.yield
--// extern libs //--
-local luasec = use "ssl"
+local has_luasec, luasec = pcall ( require , "ssl" )
local luasocket = use "socket" or require "socket"
local luasocket_gettime = luasocket.gettime
+local getaddrinfo = luasocket.dns.getaddrinfo
--// extern lib methods //--
-local ssl_wrap = ( luasec and luasec.wrap )
+local ssl_wrap = ( has_luasec and luasec.wrap )
local socket_bind = luasocket.bind
local socket_sleep = luasocket.sleep
local socket_select = luasocket.select
@@ -149,7 +150,7 @@ _accepretry = 10 -- seconds to wait until the next attempt of a full server to a
_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
+_checkinterval = 30 -- 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
@@ -295,6 +296,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
local status = listeners.onstatus
local disconnect = listeners.ondisconnect
local drain = listeners.ondrain
+ local onreadtimeout = listeners.onreadtimeout;
local detach = listeners.ondetach
local bufferqueue = { } -- buffer array
@@ -324,6 +326,8 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
handler.disconnect = function( )
return disconnect
end
+ handler.onreadtimeout = onreadtimeout;
+
handler.setlistener = function( self, listeners )
if detach then
detach(self) -- Notify listener that it is no longer responsible for this connection
@@ -332,6 +336,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
disconnect = listeners.ondisconnect
status = listeners.onstatus
drain = listeners.ondrain
+ handler.onreadtimeout = listeners.onreadtimeout
detach = listeners.ondetach
end
handler.getstats = function( )
@@ -404,6 +409,9 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
out_put "server.lua: closed client handler and removed socket from list"
return true
end
+ handler.server = function ( )
+ return server
+ end
handler.ip = function( )
return ip
end
@@ -575,6 +583,9 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
_ = status and status( handler, "ssl-handshake-complete" )
if self.autostart_ssl and listeners.onconnect then
listeners.onconnect(self);
+ if bufferqueuelen ~= 0 then
+ _sendlistlen = addsocket(_sendlist, client, _sendlistlen)
+ end
end
_readlistlen = addsocket(_readlist, client, _readlistlen)
return true
@@ -592,13 +603,14 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
coroutine_yield( ) -- handshake not finished
end
end
- out_put( "server.lua: ssl handshake error: ", tostring(err or "handshake too long") )
- _ = handler and handler:force_close("ssl handshake failed")
+ err = "ssl handshake error: " .. ( err or "handshake too long" );
+ out_put( "server.lua: ", err );
+ _ = handler and handler:force_close(err)
return false, err -- handshake failed
end
)
end
- if luasec then
+ if has_luasec then
handler.starttls = function( self, _sslctx)
if _sslctx then
handler:set_sslctx(_sslctx);
@@ -624,7 +636,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
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 )
@@ -651,7 +663,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport
_socketlist[ socket ] = handler
_readlistlen = addsocket(_readlist, socket, _readlistlen)
- if sslctx and luasec then
+ if sslctx and has_luasec then
out_put "server.lua: auto-starting ssl negotiation..."
handler.autostart_ssl = true;
local ok, err = handler:starttls(sslctx);
@@ -712,7 +724,7 @@ local function link(sender, receiver, buffersize)
sender_locked = nil;
end
end
-
+
local _readbuffer = sender.readbuffer;
function sender.readbuffer()
_readbuffer();
@@ -727,22 +739,23 @@ end
----------------------------------// PUBLIC //--
addserver = function( addr, port, listeners, pattern, sslctx ) -- this function provides a way for other scripts to reg a server
+ addr = addr or "*"
local err
if type( listeners ) ~= "table" then
err = "invalid listener table"
- end
- if type( port ) ~= "number" or not ( port >= 0 and port <= 65535 ) then
+ elseif type ( addr ) ~= "string" then
+ err = "invalid address"
+ elseif type( port ) ~= "number" or not ( port >= 0 and port <= 65535 ) then
err = "invalid port"
elseif _server[ addr..":"..port ] then
err = "listeners on '[" .. addr .. "]:" .. port .. "' already exist"
- elseif sslctx and not luasec then
+ elseif sslctx and not has_luasec then
err = "luasec not found"
end
if err then
out_error( "server.lua, [", addr, "]:", port, ": ", err )
return nil, err
end
- addr = addr or "*"
local server, err = socket_bind( addr, port, _tcpbacklog )
if err then
out_error( "server.lua, [", addr, "]:", port, ": ", err )
@@ -883,16 +896,18 @@ loop = function(once) -- this is the main loop of the program
_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:force_close() -- 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?
+ if not(handler.onreadtimeout) or handler:onreadtimeout() ~= true then
+ handler.disconnect( )( handler, "read timeout" )
+ handler:close( ) -- forced disconnect?
+ else
+ _readtimes[ handler ] = _currenttime -- reset timer
+ end
end
end
end
@@ -920,6 +935,7 @@ loop = function(once) -- this is the main loop of the program
socket_sleep( _sleeptime )
until quitting;
if once and quitting == "once" then quitting = nil; return; end
+ closeall();
return "quitting"
end
@@ -952,17 +968,46 @@ local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx
return handler, socket
end
-local addclient = function( address, port, listeners, pattern, sslctx )
- local client, err = luasocket.tcp( )
+local addclient = function( address, port, listeners, pattern, sslctx, typ )
+ local err
+ if type( listeners ) ~= "table" then
+ err = "invalid listener table"
+ elseif type ( address ) ~= "string" then
+ err = "invalid address"
+ elseif type( port ) ~= "number" or not ( port >= 0 and port <= 65535 ) then
+ err = "invalid port"
+ elseif sslctx and not has_luasec then
+ err = "luasec not found"
+ end
+ if not typ then
+ local addrinfo, err = getaddrinfo(address)
+ if not addrinfo then return nil, err end
+ if addrinfo[1] and addrinfo[1].family == "inet6" then
+ typ = "tcp6"
+ else
+ typ = "tcp"
+ end
+ end
+ local create = luasocket[typ]
+ if type( create ) ~= "function" then
+ err = "invalid socket type"
+ end
+
+ if err then
+ out_error( "server.lua, addclient: ", err )
+ return nil, err
+ end
+
+ local client, err = create( )
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 )
+ local ok, err = client:connect( address, port )
+ if ok or err == "timeout" then
+ return wrapclient( client, address, port, listeners, pattern, sslctx )
else
- wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx )
+ return nil, err
end
end
@@ -992,7 +1037,7 @@ return {
addclient = addclient,
wrapclient = wrapclient,
-
+
loop = loop,
link = link,
step = step,
diff --git a/net/websocket.lua b/net/websocket.lua
new file mode 100644
index 00000000..a4274eec
--- /dev/null
+++ b/net/websocket.lua
@@ -0,0 +1,272 @@
+-- Prosody IM
+-- Copyright (C) 2012 Florian Zeitz
+-- Copyright (C) 2014 Daurnimator
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local t_concat = table.concat;
+
+local http = require "net.http";
+local frames = require "net.websocket.frames";
+local base64 = require "util.encodings".base64;
+local sha1 = require "util.hashes".sha1;
+local random_bytes = require "util.random".bytes;
+local timer = require "util.timer";
+local log = require "util.logger".init "websocket";
+
+local close_timeout = 3; -- Seconds to wait after sending close frame until closing connection.
+
+local websockets = {};
+
+local websocket_listeners = {};
+function websocket_listeners.ondisconnect(handler, err)
+ local s = websockets[handler];
+ websockets[handler] = nil;
+ if s.close_timer then
+ timer.stop(s.close_timer);
+ s.close_timer = nil;
+ end
+ s.readyState = 3;
+ if s.close_code == nil and s.onerror then s:onerror(err); end
+ if s.onclose then s:onclose(s.close_code, s.close_message or err); end
+end
+
+function websocket_listeners.ondetach(handler)
+ websockets[handler] = nil;
+end
+
+local function fail(s, code, reason)
+ module:log("warn", "WebSocket connection failed, closing. %d %s", code, reason);
+ s:close(code, reason);
+ s.handler:close();
+ return false
+end
+
+function websocket_listeners.onincoming(handler, buffer, err)
+ local s = websockets[handler];
+ s.readbuffer = s.readbuffer..buffer;
+ while true do
+ local frame, len = frames.parse(s.readbuffer);
+ if frame == nil then break end
+ s.readbuffer = s.readbuffer:sub(len+1);
+
+ log("debug", "Websocket received frame: opcode=%0x, %i bytes", frame.opcode, #frame.data);
+
+ -- Error cases
+ if frame.RSV1 or frame.RSV2 or frame.RSV3 then -- Reserved bits non zero
+ return fail(s, 1002, "Reserved bits not zero");
+ end
+
+ if frame.opcode < 0x8 then
+ local databuffer = s.databuffer;
+ if frame.opcode == 0x0 then -- Continuation frames
+ if not databuffer then
+ return fail(s, 1002, "Unexpected continuation frame");
+ end
+ databuffer[#databuffer+1] = frame.data;
+ elseif frame.opcode == 0x1 or frame.opcode == 0x2 then -- Text or Binary frame
+ if databuffer then
+ return fail(s, 1002, "Continuation frame expected");
+ end
+ databuffer = {type=frame.opcode, frame.data};
+ s.databuffer = databuffer;
+ else
+ return fail(s, 1002, "Reserved opcode");
+ end
+ if frame.FIN then
+ s.databuffer = nil;
+ if s.onmessage then
+ s:onmessage(t_concat(databuffer), databuffer.type);
+ end
+ end
+ else -- Control frame
+ if frame.length > 125 then -- Control frame with too much payload
+ return fail(s, 1002, "Payload too large");
+ elseif not frame.FIN then -- Fragmented control frame
+ return fail(s, 1002, "Fragmented control frame");
+ end
+ if frame.opcode == 0x8 then -- Close request
+ if frame.length == 1 then
+ return fail(s, 1002, "Close frame with payload, but too short for status code");
+ end
+ local status_code, message = frames.parse_close(frame.data);
+ if status_code == nil then
+ --[[ RFC 6455 7.4.1
+ 1005 is a reserved value and MUST NOT be set as a status code in a
+ Close control frame by an endpoint. It is designated for use in
+ applications expecting a status code to indicate that no status
+ code was actually present.
+ ]]
+ status_code = 1005
+ elseif status_code < 1000 then
+ return fail(s, 1002, "Closed with invalid status code");
+ elseif ((status_code > 1003 and status_code < 1007) or status_code > 1011) and status_code < 3000 then
+ return fail(s, 1002, "Closed with reserved status code");
+ end
+ s.close_code, s.close_message = status_code, message;
+ s:close(1000);
+ return true;
+ elseif frame.opcode == 0x9 then -- Ping frame
+ frame.opcode = 0xA;
+ frame.MASK = true; -- RFC 6455 6.1.5: If the data is being sent by the client, the frame(s) MUST be masked
+ handler:write(frames.build(frame));
+ elseif frame.opcode == 0xA then -- Pong frame
+ log("debug", "Received unexpected pong frame: " .. tostring(frame.data));
+ else
+ return fail(s, 1002, "Reserved opcode");
+ end
+ end
+ end
+ return true;
+end
+
+local websocket_methods = {};
+local function close_timeout_cb(now, timerid, s)
+ s.close_timer = nil;
+ log("warn", "Close timeout waiting for server to close, closing manually.");
+ s.handler:close();
+end
+function websocket_methods:close(code, reason)
+ if self.readyState < 2 then
+ code = code or 1000;
+ log("debug", "closing WebSocket with code %i: %s" , code , tostring(reason));
+ self.readyState = 2;
+ local handler = self.handler;
+ handler:write(frames.build_close(code, reason, true));
+ -- Do not close socket straight away, wait for acknowledgement from server.
+ self.close_timer = timer.add_task(close_timeout, close_timeout_cb, self);
+ elseif self.readyState == 2 then
+ log("debug", "tried to close a closing WebSocket, closing the raw socket.");
+ -- Stop timer
+ if self.close_timer then
+ timer.stop(self.close_timer);
+ self.close_timer = nil;
+ end
+ local handler = self.handler;
+ handler:close();
+ else
+ log("debug", "tried to close a closed WebSocket, ignoring.");
+ end
+end
+function websocket_methods:send(data, opcode)
+ if self.readyState < 1 then
+ return nil, "WebSocket not open yet, unable to send data.";
+ elseif self.readyState >= 2 then
+ return nil, "WebSocket closed, unable to send data.";
+ end
+ if opcode == "text" or opcode == nil then
+ opcode = 0x1;
+ elseif opcode == "binary" then
+ opcode = 0x2;
+ end
+ local frame = {
+ FIN = true;
+ MASK = true; -- RFC 6455 6.1.5: If the data is being sent by the client, the frame(s) MUST be masked
+ opcode = opcode;
+ data = tostring(data);
+ };
+ log("debug", "WebSocket sending frame: opcode=%0x, %i bytes", frame.opcode, #frame.data);
+ return self.handler:write(frames.build(frame));
+end
+
+local websocket_metatable = {
+ __index = websocket_methods;
+};
+
+local function connect(url, ex, listeners)
+ ex = ex or {};
+
+ --[[RFC 6455 4.1.7:
+ The request MUST include a header field with the name
+ |Sec-WebSocket-Key|. The value of this header field MUST be a
+ nonce consisting of a randomly selected 16-byte value that has
+ been base64-encoded (see Section 4 of [RFC4648]). The nonce
+ MUST be selected randomly for each connection.
+ ]]
+ local key = base64.encode(random_bytes(16));
+
+ -- Either a single protocol string or an array of protocol strings.
+ local protocol = ex.protocol;
+ if type(protocol) == "string" then
+ protocol = { protocol, [protocol] = true };
+ elseif type(protocol) == "table" and protocol[1] then
+ for _, v in ipairs(protocol) do
+ protocol[v] = true;
+ end
+ else
+ protocol = nil;
+ end
+
+ local headers = {
+ ["Upgrade"] = "websocket";
+ ["Connection"] = "Upgrade";
+ ["Sec-WebSocket-Key"] = key;
+ ["Sec-WebSocket-Protocol"] = protocol and t_concat(protocol, ", ");
+ ["Sec-WebSocket-Version"] = "13";
+ ["Sec-WebSocket-Extensions"] = ex.extensions;
+ }
+ if ex.headers then
+ for k,v in pairs(ex.headers) do
+ headers[k] = v;
+ end
+ end
+
+ local s = setmetatable({
+ readbuffer = "";
+ databuffer = nil;
+ handler = nil;
+ close_code = nil;
+ close_message = nil;
+ close_timer = nil;
+ readyState = 0;
+ protocol = nil;
+
+ url = url;
+
+ onopen = listeners.onopen;
+ onclose = listeners.onclose;
+ onmessage = listeners.onmessage;
+ onerror = listeners.onerror;
+ }, websocket_metatable);
+
+ local http_url = url:gsub("^(ws)", "http");
+ local http_req = http.request(http_url, {
+ method = "GET";
+ headers = headers;
+ sslctx = ex.sslctx;
+ }, function(b, c, r, http_req)
+ if c ~= 101
+ or r.headers["connection"]:lower() ~= "upgrade"
+ or r.headers["upgrade"] ~= "websocket"
+ or r.headers["sec-websocket-accept"] ~= base64.encode(sha1(key .. "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"))
+ or (protocol and not protocol[r.headers["sec-websocket-protocol"]])
+ then
+ s.readyState = 3;
+ log("warn", "WebSocket connection to %s failed: %s", url, tostring(b));
+ if s.onerror then s:onerror("connecting-failed"); end
+ return;
+ end
+
+ s.protocol = r.headers["sec-websocket-protocol"];
+
+ -- Take possession of socket from http
+ http_req.conn = nil;
+ local handler = http_req.handler;
+ s.handler = handler;
+ websockets[handler] = s;
+ handler:setlistener(websocket_listeners);
+
+ log("debug", "WebSocket connected successfully to %s", url);
+ s.readyState = 1;
+ if s.onopen then s:onopen(); end
+ websocket_listeners.onincoming(handler, b);
+ end);
+
+ return s;
+end
+
+return {
+ connect = connect;
+};
diff --git a/net/websocket/frames.lua b/net/websocket/frames.lua
new file mode 100644
index 00000000..737f46bb
--- /dev/null
+++ b/net/websocket/frames.lua
@@ -0,0 +1,220 @@
+-- Prosody IM
+-- Copyright (C) 2012 Florian Zeitz
+-- Copyright (C) 2014 Daurnimator
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local softreq = require "util.dependencies".softreq;
+local log = require "util.logger".init "websocket.frames";
+local random_bytes = require "util.random".bytes;
+
+local bit = assert(softreq"bit" or softreq"bit32",
+ "No bit module found. See https://prosody.im/doc/depends#bitop");
+local band = bit.band;
+local bor = bit.bor;
+local bxor = bit.bxor;
+local lshift = bit.lshift;
+local rshift = bit.rshift;
+
+local t_concat = table.concat;
+local s_byte = string.byte;
+local s_char= string.char;
+local s_sub = string.sub;
+local s_pack = string.pack;
+local s_unpack = string.unpack;
+
+if not s_pack and softreq"struct" then
+ s_pack = softreq"struct".pack;
+ s_unpack = softreq"struct".unpack;
+end
+
+local function read_uint16be(str, pos)
+ local l1, l2 = s_byte(str, pos, pos+1);
+ return l1*256 + l2;
+end
+-- FIXME: this may lose precision
+local function read_uint64be(str, pos)
+ local l1, l2, l3, l4, l5, l6, l7, l8 = s_byte(str, pos, pos+7);
+ local h = lshift(l1, 24) + lshift(l2, 16) + lshift(l3, 8) + l4;
+ local l = lshift(l5, 24) + lshift(l6, 16) + lshift(l7, 8) + l8;
+ return h * 2^32 + l;
+end
+local function pack_uint16be(x)
+ return s_char(rshift(x, 8), band(x, 0xFF));
+end
+local function get_byte(x, n)
+ return band(rshift(x, n), 0xFF);
+end
+local function pack_uint64be(x)
+ local h = band(x / 2^32, 2^32-1);
+ return s_char(get_byte(h, 24), get_byte(h, 16), get_byte(h, 8), band(h, 0xFF),
+ get_byte(x, 24), get_byte(x, 16), get_byte(x, 8), band(x, 0xFF));
+end
+
+if s_pack then
+ function pack_uint16be(x)
+ return s_pack(">I2", x);
+ end
+ function pack_uint64be(x)
+ return s_pack(">I8", x);
+ end
+end
+
+if s_unpack then
+ function read_uint16be(str, pos)
+ return s_unpack(">I2", str, pos);
+ end
+ function read_uint64be(str, pos)
+ return s_unpack(">I8", str, pos);
+ end
+end
+
+local function parse_frame_header(frame)
+ if #frame < 2 then return; end
+
+ local byte1, byte2 = s_byte(frame, 1, 2);
+ local result = {
+ FIN = band(byte1, 0x80) > 0;
+ RSV1 = band(byte1, 0x40) > 0;
+ RSV2 = band(byte1, 0x20) > 0;
+ RSV3 = band(byte1, 0x10) > 0;
+ opcode = band(byte1, 0x0F);
+
+ MASK = band(byte2, 0x80) > 0;
+ length = band(byte2, 0x7F);
+ };
+
+ local length_bytes = 0;
+ if result.length == 126 then
+ length_bytes = 2;
+ elseif result.length == 127 then
+ length_bytes = 8;
+ end
+
+ local header_length = 2 + length_bytes + (result.MASK and 4 or 0);
+ if #frame < header_length then return; end
+
+ if length_bytes == 2 then
+ result.length = read_uint16be(frame, 3);
+ elseif length_bytes == 8 then
+ result.length = read_uint64be(frame, 3);
+ end
+
+ if result.MASK then
+ result.key = { s_byte(frame, length_bytes+3, length_bytes+6) };
+ end
+
+ return result, header_length;
+end
+
+-- XORs the string `str` with the array of bytes `key`
+-- TODO: optimize
+local function apply_mask(str, key, from, to)
+ from = from or 1
+ if from < 0 then from = #str + from + 1 end -- negative indicies
+ to = to or #str
+ if to < 0 then to = #str + to + 1 end -- negative indicies
+ local key_len = #key
+ local counter = 0;
+ local data = {};
+ for i = from, to do
+ local key_index = counter%key_len + 1;
+ counter = counter + 1;
+ data[counter] = s_char(bxor(key[key_index], s_byte(str, i)));
+ end
+ return t_concat(data);
+end
+
+local function parse_frame_body(frame, header, pos)
+ if header.MASK then
+ return apply_mask(frame, header.key, pos, pos + header.length - 1);
+ else
+ return frame:sub(pos, pos + header.length - 1);
+ end
+end
+
+local function parse_frame(frame)
+ local result, pos = parse_frame_header(frame);
+ if result == nil or #frame < (pos + result.length) then return; end
+ result.data = parse_frame_body(frame, result, pos+1);
+ return result, pos + result.length;
+end
+
+local function build_frame(desc)
+ local data = desc.data or "";
+
+ assert(desc.opcode and desc.opcode >= 0 and desc.opcode <= 0xF, "Invalid WebSocket opcode");
+ if desc.opcode >= 0x8 then
+ -- RFC 6455 5.5
+ assert(#data <= 125, "WebSocket control frames MUST have a payload length of 125 bytes or less.");
+ end
+
+ local b1 = bor(desc.opcode,
+ desc.FIN and 0x80 or 0,
+ desc.RSV1 and 0x40 or 0,
+ desc.RSV2 and 0x20 or 0,
+ desc.RSV3 and 0x10 or 0);
+
+ local b2 = #data;
+ local length_extra;
+ if b2 <= 125 then -- 7-bit length
+ length_extra = "";
+ elseif b2 <= 0xFFFF then -- 2-byte length
+ b2 = 126;
+ length_extra = pack_uint16be(#data);
+ else -- 8-byte length
+ b2 = 127;
+ length_extra = pack_uint64be(#data);
+ end
+
+ local key = ""
+ if desc.MASK then
+ local key_a = desc.key
+ if key_a then
+ key = s_char(unpack(key_a, 1, 4));
+ else
+ key = random_bytes(4);
+ key_a = {key:byte(1,4)};
+ end
+ b2 = bor(b2, 0x80);
+ data = apply_mask(data, key_a);
+ end
+
+ return s_char(b1, b2) .. length_extra .. key .. data
+end
+
+local function parse_close(data)
+ local code, message
+ if #data >= 2 then
+ code = read_uint16be(data, 1);
+ if #data > 2 then
+ message = s_sub(data, 3);
+ end
+ end
+ return code, message
+end
+
+local function build_close(code, message, mask)
+ local data = pack_uint16be(code);
+ if message then
+ assert(#message<=123, "Close reason must be <=123 bytes");
+ data = data .. message;
+ end
+ return build_frame({
+ opcode = 0x8;
+ FIN = true;
+ MASK = mask;
+ data = data;
+ });
+end
+
+return {
+ parse_header = parse_frame_header;
+ parse_body = parse_frame_body;
+ parse = parse_frame;
+ build = build_frame;
+ parse_close = parse_close;
+ build_close = build_close;
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 08:44:07 +0000