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net/xmppserver_listener.lua @ 1617:c6e175a0d83b
xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 28 Jul 2009 19:15:29 +0100 |
parent | 1523:841d61be198f |
child | 1618:ba2a92230b77 |
child | 1951:632039101699 |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2009 Matthew Wild |
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3 -- Copyright (C) 2008-2009 Waqas Hussain |
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4 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
6 -- COPYING file in the source package for more information. | |
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7 -- |
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8 |
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9 |
148 | 10 |
11 local logger = require "logger"; | |
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12 local log = logger.init("xmppserver_listener"); |
148 | 13 local lxp = require "lxp" |
14 local init_xmlhandlers = require "core.xmlhandlers" | |
15 local s2s_new_incoming = require "core.s2smanager".new_incoming; | |
16 local s2s_streamopened = require "core.s2smanager".streamopened; | |
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17 local s2s_streamclosed = require "core.s2smanager".streamclosed; |
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18 local s2s_destroy_session = require "core.s2smanager".destroy_session; |
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19 local s2s_attempt_connect = require "core.s2smanager".attempt_connection; |
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20 local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream", |
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21 default_ns = "jabber:server", |
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22 streamopened = s2s_streamopened, streamclosed = s2s_streamclosed, handlestanza = core_process_stanza }; |
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23 |
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24 function stream_callbacks.error(session, error, data) |
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25 if error == "no-stream" then |
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26 session:close("invalid-namespace"); |
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27 else |
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28 session.log("debug", "Server-to-server XML parse error: %s", tostring(error)); |
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29 session:close("xml-not-well-formed"); |
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30 end |
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31 end |
331 | 32 |
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33 local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), debug.traceback()); end |
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34 function stream_callbacks.handlestanza(a, b) |
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35 xpcall(function () core_process_stanza(a, b) end, handleerr); |
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36 end |
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37 |
148 | 38 local connlisteners_register = require "net.connlisteners".register; |
39 | |
40 local t_insert = table.insert; | |
41 local t_concat = table.concat; | |
42 local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end | |
43 local m_random = math.random; | |
44 local format = string.format; | |
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45 local sessionmanager = require "core.sessionmanager"; |
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46 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; |
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47 local st = require "util.stanza"; |
148 | 48 |
49 local sessions = {}; | |
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50 local xmppserver = { default_port = 5269, default_mode = "*a" }; |
148 | 51 |
52 -- These are session methods -- | |
53 | |
54 local function session_reset_stream(session) | |
55 -- Reset stream | |
331 | 56 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|"); |
148 | 57 session.parser = parser; |
58 | |
59 session.notopen = true; | |
60 | |
61 function session.data(conn, data) | |
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62 local ok, err = parser:parse(data); |
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63 if ok then return; end |
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64 session:close("xml-not-well-formed"); |
148 | 65 end |
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66 |
148 | 67 return true; |
68 end | |
69 | |
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70 |
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71 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; |
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72 local default_stream_attr = { ["xmlns:stream"] = stream_callbacks.stream_tag:gsub("%|[^|]+$", ""), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" }; |
333
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73 local function session_close(session, reason) |
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74 local log = session.log or log; |
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75 if session.conn then |
1617
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76 if session.notopen then |
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77 session.sends2s("<?xml version='1.0'?>"); |
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78 session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag()); |
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79 end |
330
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80 if reason then |
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81 if type(reason) == "string" then -- assume stream error |
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82 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason); |
331 | 83 session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' })); |
330
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84 elseif type(reason) == "table" then |
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85 if reason.condition then |
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86 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up(); |
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87 if reason.text then |
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88 stanza:tag("text", stream_xmlns_attr):text(reason.text):up(); |
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89 end |
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90 if reason.extra then |
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91 stanza:add_child(reason.extra); |
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92 end |
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93 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza)); |
331 | 94 session.sends2s(stanza); |
330
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95 elseif reason.name then -- a stanza |
331 | 96 log("info", "Disconnecting %s->%s[%s], <stream:error> is: %s", session.from_host or "(unknown host)", session.to_host or "(unknown host)", session.type, tostring(reason)); |
97 session.sends2s(reason); | |
330
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98 end |
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99 end |
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100 end |
331 | 101 session.sends2s("</stream:stream>"); |
330
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102 session.conn.close(); |
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103 xmppserver.disconnect(session.conn, "stream error"); |
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104 end |
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105 end |
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106 |
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107 |
148 | 108 -- End of session methods -- |
109 | |
110 function xmppserver.listener(conn, data) | |
111 local session = sessions[conn]; | |
112 if not session then | |
113 session = s2s_new_incoming(conn); | |
114 sessions[conn] = session; | |
115 | |
116 -- Logging functions -- | |
117 | |
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118 |
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119 local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$"); |
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120 session.log = logger.init(conn_name); |
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121 |
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122 session.log("info", "Incoming s2s connection"); |
148 | 123 |
124 session.reset_stream = session_reset_stream; | |
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125 session.close = session_close; |
148 | 126 |
127 session_reset_stream(session); -- Initialise, ready for use | |
128 | |
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129 session.dispatch_stanza = stream_callbacks.handlestanza; |
148 | 130 end |
131 if data then | |
132 session.data(conn, data); | |
133 end | |
134 end | |
135 | |
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136 function xmppserver.disconnect(conn, err) |
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137 local session = sessions[conn]; |
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138 if session then |
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139 if err and err ~= "closed" and session.srv_hosts then |
974 | 140 (session.log or log)("debug", "s2s connection closed unexpectedly"); |
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141 if s2s_attempt_connect(session, err) then |
974 | 142 (session.log or log)("debug", "...so we're going to try again"); |
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143 return; -- Session lives for now |
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144 end |
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145 end |
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146 (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err)); |
163
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147 s2s_destroy_session(session); |
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148 sessions[conn] = nil; |
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149 session = nil; |
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150 collectgarbage("collect"); |
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151 end |
148 | 152 end |
153 | |
154 function xmppserver.register_outgoing(conn, session) | |
155 session.direction = "outgoing"; | |
156 sessions[conn] = session; | |
157 | |
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158 session.reset_stream = session_reset_stream; |
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159 session.close = session_close; |
148 | 160 session_reset_stream(session); -- Initialise, ready for use |
161 | |
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162 --local function handleerr(err) print("Traceback:", err, debug.traceback()); end |
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163 --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end |
148 | 164 end |
165 | |
166 connlisteners_register("xmppserver", xmppserver); | |
167 | |
168 | |
169 -- We need to perform some initialisation when a connection is created | |
170 -- We also need to perform that same initialisation at other points (SASL, TLS, ...) | |
171 | |
172 -- ...and we need to handle data | |
226
ba4711c4e8d2
Committing code to get nicer tracebacks for errors, also we no longer consider such errors fatal (probably a bad thing, I know...)
Matthew Wild <mwild1@gmail.com>
parents:
163
diff
changeset
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173 -- ...and record all sessions associated with connections |