Software / code / prosody
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net/xmppserver_listener.lua @ 2956:15a145a67044
util.stanza: Fixed some more nil global accesses.
| author | Waqas Hussain <waqas20@gmail.com> |
|---|---|
| date | Thu, 01 Apr 2010 19:12:08 +0500 |
| parent | 2950:0250fba6be72 |
| child | 2951:294c359a05f5 |
| rev | line source |
|---|---|
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 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\1stream", |
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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 if b.attr.xmlns == "jabber:client" then --COMPAT: Prosody pre-0.6.2 may send jabber:client |
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36 b.attr.xmlns = nil; |
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37 end |
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38 xpcall(function () core_process_stanza(a, b) end, handleerr); |
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39 end |
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40 |
| 148 | 41 local connlisteners_register = require "net.connlisteners".register; |
| 42 | |
| 43 local t_insert = table.insert; | |
| 44 local t_concat = table.concat; | |
| 45 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 | |
| 46 local m_random = math.random; | |
| 47 local format = string.format; | |
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48 local sessionmanager = require "core.sessionmanager"; |
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49 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; |
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50 local st = require "util.stanza"; |
| 148 | 51 |
| 52 local sessions = {}; | |
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53 local xmppserver = { default_port = 5269, default_mode = "*a" }; |
| 148 | 54 |
| 55 -- These are session methods -- | |
| 56 | |
| 57 local function session_reset_stream(session) | |
| 58 -- Reset stream | |
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59 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "\1"); |
| 148 | 60 session.parser = parser; |
| 61 | |
| 62 session.notopen = true; | |
| 63 | |
| 64 function session.data(conn, data) | |
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65 local ok, err = parser:parse(data); |
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66 if ok then return; end |
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67 (session.log or log)("warn", "Received invalid XML: %s", data); |
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68 (session.log or log)("warn", "Problem was: %s", err); |
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69 session:close("xml-not-well-formed"); |
| 148 | 70 end |
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71 |
| 148 | 72 return true; |
| 73 end | |
| 74 | |
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75 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; |
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76 local default_stream_attr = { ["xmlns:stream"] = stream_callbacks.stream_tag:match("[^\1]*"), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" }; |
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77 local function session_close(session, reason) |
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78 local log = session.log or log; |
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79 if session.conn then |
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80 if session.notopen then |
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81 session.sends2s("<?xml version='1.0'?>"); |
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82 session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag()); |
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83 end |
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84 if reason then |
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85 if type(reason) == "string" then -- assume stream error |
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86 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason); |
| 331 | 87 session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' })); |
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88 elseif type(reason) == "table" then |
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89 if reason.condition then |
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90 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up(); |
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91 if reason.text then |
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92 stanza:tag("text", stream_xmlns_attr):text(reason.text):up(); |
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93 end |
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94 if reason.extra then |
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95 stanza:add_child(reason.extra); |
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96 end |
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97 log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza)); |
| 331 | 98 session.sends2s(stanza); |
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99 elseif reason.name then -- a stanza |
| 331 | 100 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)); |
| 101 session.sends2s(reason); | |
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102 end |
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103 end |
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104 end |
| 331 | 105 session.sends2s("</stream:stream>"); |
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106 if session.notopen or not session.conn.close() then |
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107 session.conn.close(true); -- Force FIXME: timer? |
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108 end |
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109 session.conn.close(); |
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110 xmppserver.disconnect(session.conn, "stream error"); |
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111 end |
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112 end |
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113 |
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114 |
| 148 | 115 -- End of session methods -- |
| 116 | |
| 117 function xmppserver.listener(conn, data) | |
| 118 local session = sessions[conn]; | |
| 119 if not session then | |
| 120 session = s2s_new_incoming(conn); | |
| 121 sessions[conn] = session; | |
| 122 | |
| 123 -- Logging functions -- | |
| 124 | |
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125 |
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126 local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$"); |
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127 session.log = logger.init(conn_name); |
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128 |
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129 session.log("info", "Incoming s2s connection"); |
| 148 | 130 |
| 131 session.reset_stream = session_reset_stream; | |
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132 session.close = session_close; |
| 148 | 133 |
| 134 session_reset_stream(session); -- Initialise, ready for use | |
| 135 | |
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136 session.dispatch_stanza = stream_callbacks.handlestanza; |
| 148 | 137 end |
| 138 if data then | |
| 139 session.data(conn, data); | |
| 140 end | |
| 141 end | |
| 142 | |
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143 function xmppserver.status(conn, status) |
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144 if status == "ssl-handshake-complete" then |
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145 local session = sessions[conn]; |
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146 if session and session.direction == "outgoing" then |
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147 local format, to_host, from_host = string.format, session.to_host, session.from_host; |
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148 session.log("debug", "Sending stream header..."); |
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149 session.sends2s(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0'>]], from_host, to_host)); |
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150 end |
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151 end |
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152 end |
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153 |
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154 function xmppserver.disconnect(conn, err) |
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155 local session = sessions[conn]; |
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156 if session then |
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157 if err and err ~= "closed" and session.srv_hosts then |
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158 (session.log or log)("debug", "s2s connection attempt failed: %s", err); |
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159 if s2s_attempt_connect(session, err) then |
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160 (session.log or log)("debug", "...so we're going to try another target"); |
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161 return; -- Session lives for now |
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162 end |
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163 end |
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164 (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err)); |
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165 s2s_destroy_session(session, err); |
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166 sessions[conn] = nil; |
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167 session = nil; |
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168 end |
| 148 | 169 end |
| 170 | |
| 171 function xmppserver.register_outgoing(conn, session) | |
| 172 session.direction = "outgoing"; | |
| 173 sessions[conn] = session; | |
| 174 | |
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175 session.reset_stream = session_reset_stream; |
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176 session.close = session_close; |
| 148 | 177 session_reset_stream(session); -- Initialise, ready for use |
| 178 | |
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179 --local function handleerr(err) print("Traceback:", err, debug.traceback()); end |
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180 --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end |
| 148 | 181 end |
| 182 | |
| 183 connlisteners_register("xmppserver", xmppserver); | |
| 184 | |
| 185 | |
| 186 -- We need to perform some initialisation when a connection is created | |
| 187 -- We also need to perform that same initialisation at other points (SASL, TLS, ...) | |
| 188 | |
| 189 -- ...and we need to handle data | |
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190 -- ...and record all sessions associated with connections |
