module:load("proxy65", <proxy65_jid>);
]]--
-if module:get_host_type() ~= "component" then
- error("proxy65 should be loaded as a component, please see http://prosody.im/doc/components", 0);
-end
-local jid_split, jid_join = require "util.jid".split, require "util.jid".join;
+local module = module;
+local tostring = tostring;
+local jid_split, jid_join, jid_compare = require "util.jid".split, require "util.jid".join, require "util.jid".compare;
local st = require "util.stanza";
-local componentmanager = require "core.componentmanager";
-local config_get = require "core.configmanager".get;
local connlisteners = require "net.connlisteners";
local sha1 = require "util.hashes".sha1;
+local server = require "net.server";
local host, name = module:get_host(), "SOCKS5 Bytestreams Service";
-local sessions, transfers, component, replies_cache = {}, {}, nil, {};
+local sessions, transfers, replies_cache = {}, {}, {};
-local proxy_port = config_get(host, "core", "proxy65_port") or 5000;
-local proxy_interface = config_get(host, "core", "proxy65_interface") or "*";
-local proxy_address = config_get(host, "core", "proxy65_address") or (proxy_interface ~= "*" and proxy_interface) or host;
-local proxy_acl = config_get(host, "core", "proxy65_acl");
+local proxy_port = module:get_option("proxy65_port") or 5000;
+local proxy_interface = module:get_option("proxy65_interface") or "*";
+local proxy_address = module:get_option("proxy65_address") or (proxy_interface ~= "*" and proxy_interface) or host;
+local proxy_acl = module:get_option("proxy65_acl");
+local max_buffer_size = 4096;
local connlistener = { default_port = proxy_port, default_interface = proxy_interface, default_mode = "*a" };
function connlistener.onincoming(conn, data)
local session = sessions[conn] or {};
- if session.setup == nil and data ~= nil and data:sub(1):byte() == 0x05 and data:len() > 2 then
- local nmethods = data:sub(2):byte();
+ if session.setup == nil and data ~= nil and data:byte(1) == 0x05 and #data > 2 then
+ local nmethods = data:byte(2);
local methods = data:sub(3);
local supported = false;
for i=1, nmethods, 1 do
- if(methods:sub(i):byte() == 0x00) then -- 0x00 == method: NO AUTH
+ if(methods:byte(i) == 0x00) then -- 0x00 == method: NO AUTH
supported = true;
break;
end
return;
end
end
- if data ~= nil and data:len() == 0x2F and -- 40 == length of SHA1 HASH, and 7 other bytes => 47 => 0x2F
- data:sub(1):byte() == 0x05 and -- SOCKS5 has 5 in first byte
- data:sub(2):byte() == 0x01 and -- CMD must be 1
- data:sub(3):byte() == 0x00 and -- RSV must be 0
- data:sub(4):byte() == 0x03 and -- ATYP must be 3
- data:sub(5):byte() == 40 and -- SHA1 HASH length must be 40 (0x28)
- data:sub(-2):byte() == 0x00 and -- PORT must be 0, size 2 byte
- data:sub(-1):byte() == 0x00
+ if data ~= nil and #data == 0x2F and -- 40 == length of SHA1 HASH, and 7 other bytes => 47 => 0x2F
+ data:byte(1) == 0x05 and -- SOCKS5 has 5 in first byte
+ data:byte(2) == 0x01 and -- CMD must be 1
+ data:byte(3) == 0x00 and -- RSV must be 0
+ data:byte(4) == 0x03 and -- ATYP must be 3
+ data:byte(5) == 40 and -- SHA1 HASH length must be 40 (0x28)
+ data:byte(-2) == 0x00 and -- PORT must be 0, size 2 byte
+ data:byte(-1) == 0x00
then
local sha = data:sub(6, 45); -- second param is not count! it's the ending index (included!)
if transfers[sha] == nil then
transfers[sha].initiator = conn;
session.sha = sha;
module:log("debug", "initiator connected ... ");
- throttle_sending(conn, transfers[sha].target);
- throttle_sending(transfers[sha].target, conn);
+ server.link(conn, transfers[sha].target, max_buffer_size);
+ server.link(transfers[sha].target, conn, max_buffer_size);
end
- conn:write(string.char(5, 0, 0, 3, sha:len()) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
+ conn:write(string.char(5, 0, 0, 3, #sha) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
conn:lock_read(true)
else
module:log("warn", "Neither data transfer nor initial connect of a participator of a transfer.")
end
end
-local function get_disco_info(stanza)
+module:add_identity("proxy", "bytestreams", name);
+module:add_feature("http://jabber.org/protocol/bytestreams");
+
+module:hook("iq-get/host/http://jabber.org/protocol/disco#info:query", function(event)
+ local origin, stanza = event.origin, event.stanza;
local reply = replies_cache.disco_info;
if reply == nil then
reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#info")
reply.attr.id = stanza.attr.id;
reply.attr.to = stanza.attr.from;
- return reply;
-end
+ origin.send(reply);
+ return true;
+end, -1);
-local function get_disco_items(stanza)
+module:hook("iq-get/host/http://jabber.org/protocol/disco#items:query", function(event)
+ local origin, stanza = event.origin, event.stanza;
local reply = replies_cache.disco_items;
if reply == nil then
reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#items");
reply.attr.id = stanza.attr.id;
reply.attr.to = stanza.attr.from;
- return reply;
-end
+ origin.send(reply);
+ return true;
+end, -1);
-local function get_stream_host(origin, stanza)
+module:hook("iq-get/host/http://jabber.org/protocol/bytestreams:query", function(event)
+ local origin, stanza = event.origin, event.stanza;
local reply = replies_cache.stream_host;
local err_reply = replies_cache.stream_host_err;
local sid = stanza.tags[1].attr.sid;
local allow = false;
- local jid_node, jid_host, jid_resource = jid_split(stanza.attr.from);
-
- if stanza.attr.from == nil then
- jid_node = origin.username;
- jid_host = origin.host;
- jid_resource = origin.resource;
- end
+ local jid = stanza.attr.from;
if proxy_acl and #proxy_acl > 0 then
- if host ~= nil then -- at least a domain is needed.
- for _, acl in ipairs(proxy_acl) do
- local acl_node, acl_host, acl_resource = jid_split(acl);
- if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
- ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
- ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
- allow = true;
- end
- end
+ for _, acl in ipairs(proxy_acl) do
+ if jid_compare(jid, acl) then allow = true; end
end
else
allow = true;
replies_cache.stream_host = reply;
end
else
- module:log("warn", "Denying use of proxy for %s", tostring(jid_join(jid_node, jid_host, jid_resource)));
+ module:log("warn", "Denying use of proxy for %s", tostring(jid));
if err_reply == nil then
err_reply = st.iq({type="error", from=host})
:query("http://jabber.org/protocol/bytestreams")
reply.attr.id = stanza.attr.id;
reply.attr.to = stanza.attr.from;
reply.tags[1].attr.sid = sid;
- return reply;
-end
+ origin.send(reply);
+ return true;
+end);
module.unload = function()
- componentmanager.deregister_component(host);
connlisteners.deregister(module.host .. ':proxy65');
end
local function set_activation(stanza)
- local from, to, sid, reply = nil;
- from = stanza.attr.from;
- if stanza.tags[1] ~= nil and tostring(stanza.tags[1].name) == "query" then
- if stanza.tags[1].attr ~= nil then
- sid = stanza.tags[1].attr.sid;
- end
- if stanza.tags[1].tags[1] ~= nil and tostring(stanza.tags[1].tags[1].name) == "activate" then
- to = stanza.tags[1].tags[1][1];
- end
+ local to, reply;
+ local from = stanza.attr.from;
+ local query = stanza.tags[1];
+ local sid = query.attr.sid;
+ if query.tags[1] and query.tags[1].name == "activate" then
+ to = query.tags[1][1];
end
if from ~= nil and to ~= nil and sid ~= nil then
reply = st.iq({type="result", from=host, to=from});
return reply, from, to, sid;
end
-function handle_to_domain(origin, stanza)
- local to_node, to_host, to_resource = jid_split(stanza.attr.to);
- if to_node == nil then
- local type = stanza.attr.type;
- if type == "error" or type == "result" then return; end
- if stanza.name == "iq" and type == "get" then
- local xmlns = stanza.tags[1].attr.xmlns
- if xmlns == "http://jabber.org/protocol/disco#info" then
- origin.send(get_disco_info(stanza));
- return true;
- elseif xmlns == "http://jabber.org/protocol/disco#items" then
- origin.send(get_disco_items(stanza));
- return true;
- elseif xmlns == "http://jabber.org/protocol/bytestreams" then
- origin.send(get_stream_host(origin, stanza));
- return true;
- end
- elseif stanza.name == "iq" and type == "set" then
- local reply, from, to, sid = set_activation(stanza);
- if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then
- local sha = sha1(sid .. from .. to, true);
- if transfers[sha] == nil then
- module:log("error", "transfers[sha]: nil");
- elseif(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then
- origin.send(reply);
- transfers[sha].activated = true;
- transfers[sha].target:lock_read(false);
- transfers[sha].initiator:lock_read(false);
- end
- else
- module:log("error", "activation failed: sid: %s, initiator: %s, target: %s", tostring(sid), tostring(from), tostring(to));
+module:hook("iq-set/host/http://jabber.org/protocol/bytestreams:query", function(event)
+ local origin, stanza = event.origin, event.stanza;
+
+ module:log("debug", "Received activation request from %s", stanza.attr.from);
+ local reply, from, to, sid = set_activation(stanza);
+ if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then
+ local sha = sha1(sid .. from .. to, true);
+ if transfers[sha] == nil then
+ module:log("error", "transfers[sha]: nil");
+ elseif(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then
+ origin.send(reply);
+ transfers[sha].activated = true;
+ transfers[sha].target:lock_read(false);
+ transfers[sha].initiator:lock_read(false);
+ else
+ module:log("debug", "Both parties were not yet connected");
+ local message = "Neither party is connected to the proxy";
+ if transfers[sha].initiator then
+ message = "The recipient is not connected to the proxy";
+ elseif transfers[sha].target then
+ message = "The sender (you) is not connected to the proxy";
end
+ origin.send(st.error_reply(stanza, "cancel", "not-allowed", message));
end
+ return true;
+ else
+ module:log("error", "activation failed: sid: %s, initiator: %s, target: %s", tostring(sid), tostring(from), tostring(to));
end
- return;
-end
+end);
if not connlisteners.register(module.host .. ':proxy65', connlistener) then
module:log("error", "mod_proxy65: Could not establish a connection listener. Check your configuration please.");
end
connlisteners.start(module.host .. ':proxy65');
-component = componentmanager.register_component(host, handle_to_domain);
-local sender_lock_threshold = 4096;
-function throttle_sending(sender, receiver)
- sender:pattern(sender_lock_threshold);
- local sender_locked;
- local _sendbuffer = receiver.sendbuffer;
- function receiver.sendbuffer()
- _sendbuffer();
- if sender_locked and receiver.bufferlen() < sender_lock_threshold then
- sender:lock_read(false); -- Unlock now
- sender_locked = nil;
- end
- end
-
- local _readbuffer = sender.readbuffer;
- function sender.readbuffer()
- _readbuffer();
- if not sender_locked and receiver.bufferlen() >= sender_lock_threshold then
- sender_locked = true;
- sender:lock_read(true);
- end
- end
-end
projects / prosody.git / blobdiff