prosody
9719316c854e
net/xmppcomponent_listener.lua

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net/xmppcomponent_listener.lua @ 3746:9719316c854e

net.dns: Add resolver:tohostname() and dns.tohostname()
author Matthew Wild <mwild1@gmail.com>
date Tue, 14 Dec 2010 18:28:42 +0000
parent 3706:b758e4ad30a0
child 3751:46edbc8339b1
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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 --
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5 -- This project is MIT/X11 licensed. Please see the
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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
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10 local hosts = _G.hosts;
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11
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12 local t_concat = table.concat;
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13
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14 local lxp = require "lxp";
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15 local logger = require "util.logger";
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16 local config = require "core.configmanager";
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17 local connlisteners = require "net.connlisteners";
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18 local uuid_gen = require "util.uuid".generate;
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19 local jid_split = require "util.jid".split;
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20 local sha1 = require "util.hashes".sha1;
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21 local st = require "util.stanza";
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22 local new_xmpp_stream = require "util.xmppstream".new;
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23
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24 local sessions = {};
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25
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26 local log = logger.init("componentlistener");
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27
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28 local component_listener = { default_port = 5347; default_mode = "*a"; default_interface = config.get("*", "core", "component_interface") or "127.0.0.1" };
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29
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30 local xmlns_component = 'jabber:component:accept';
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31
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32 --- Callbacks/data for xmppstream to handle streams for us ---
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33
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34 local stream_callbacks = { default_ns = xmlns_component };
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35
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36 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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37
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38 function stream_callbacks.error(session, error, data, data2)
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39 if session.destroyed then return; end
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40 log("warn", "Error processing component stream: "..tostring(error));
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41 if error == "no-stream" then
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42 session:close("invalid-namespace");
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43 elseif error == "parse-error" then
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44 session.log("warn", "External component %s XML parse error: %s", tostring(session.host), tostring(data));
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45 session:close("not-well-formed");
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46 elseif error == "stream-error" then
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47 local condition, text = "undefined-condition";
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48 for child in data:children() do
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49 if child.attr.xmlns == xmlns_xmpp_streams then
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50 if child.name ~= "text" then
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51 condition = child.name;
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52 else
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53 text = child:get_text();
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54 end
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55 if condition ~= "undefined-condition" and text then
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56 break;
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57 end
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58 end
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59 end
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60 text = condition .. (text and (" ("..text..")") or "");
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61 session.log("info", "Session closed by remote with error: %s", text);
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62 session:close(nil, text);
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63 end
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64 end
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65
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66 function stream_callbacks.streamopened(session, attr)
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67 if config.get(attr.to, "core", "component_module") ~= "component" then
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68 -- Trying to act as a component domain which
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69 -- hasn't been configured
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70 session:close{ condition = "host-unknown", text = tostring(attr.to).." does not match any configured external components" };
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71 return;
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72 end
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73
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74 -- Note that we don't create the internal component
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75 -- until after the external component auths successfully
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76
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77 session.host = attr.to;
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78 session.streamid = uuid_gen();
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79 session.notopen = nil;
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80
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81 session.send(st.stanza("stream:stream", { xmlns=xmlns_component,
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82 ["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.host }):top_tag());
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83
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84 end
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85
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86 function stream_callbacks.streamclosed(session)
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87 session.log("debug", "Received </stream:stream>");
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88 session:close();
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89 end
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90
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91 local core_process_stanza = core_process_stanza;
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92
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93 function stream_callbacks.handlestanza(session, stanza)
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94 -- Namespaces are icky.
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95 if not stanza.attr.xmlns and stanza.name == "handshake" then
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96 stanza.attr.xmlns = xmlns_component;
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97 end
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98 if not stanza.attr.xmlns or stanza.attr.xmlns == "jabber:client" then
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99 local from = stanza.attr.from;
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100 if from then
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101 if session.component_validate_from then
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102 local _, domain = jid_split(stanza.attr.from);
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103 if domain ~= session.host then
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104 -- Return error
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105 session.log("warn", "Component sent stanza with missing or invalid 'from' address");
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106 session:close{
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107 condition = "invalid-from";
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108 text = "Component tried to send from address <"..tostring(from)
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109 .."> which is not in domain <"..tostring(session.host)..">";
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110 };
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111 return;
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112 end
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113 end
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114 else
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115 stanza.attr.from = session.host;
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116 end
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117 if not stanza.attr.to then
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118 session.log("warn", "Rejecting stanza with no 'to' address");
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119 session.send(st.error_reply(stanza, "modify", "bad-request", "Components MUST specify a 'to' address on stanzas"));
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120 return;
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121 end
3315
f4d2de6ac22e xmppcomponent_listener: Validate to/from on components, fixes #104 and #162
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parents: 2925
diff changeset
122 end
1106
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123 return core_process_stanza(session, stanza);
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124 end
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125
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126 --- Closing a component connection
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127 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
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128 local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
1106
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129 local function session_close(session, reason)
2757
c13816e0c546 net.xmppcomponent_listener: Don't allow closing a session that has already been destroyed
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130 if session.destroyed then return; end
1106
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131 local log = session.log or log;
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132 if session.conn then
1617
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
Matthew Wild <mwild1@gmail.com>
parents: 1523
diff changeset
133 if session.notopen then
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
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parents: 1523
diff changeset
134 session.send("<?xml version='1.0'?>");
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
Matthew Wild <mwild1@gmail.com>
parents: 1523
diff changeset
135 session.send(st.stanza("stream:stream", default_stream_attr):top_tag());
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
Matthew Wild <mwild1@gmail.com>
parents: 1523
diff changeset
136 end
1106
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137 if reason then
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138 if type(reason) == "string" then -- assume stream error
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139 log("info", "Disconnecting component, <stream:error> is: %s", reason);
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140 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
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141 elseif type(reason) == "table" then
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142 if reason.condition then
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143 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
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144 if reason.text then
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145 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
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146 end
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147 if reason.extra then
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148 stanza:add_child(reason.extra);
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149 end
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150 log("info", "Disconnecting component, <stream:error> is: %s", tostring(stanza));
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151 session.send(stanza);
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152 elseif reason.name then -- a stanza
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153 log("info", "Disconnecting component, <stream:error> is: %s", tostring(reason));
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154 session.send(reason);
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155 end
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156 end
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157 end
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158 session.send("</stream:stream>");
2489
d8296ab96f55 xmppcomponent_listener: Update for new connection API
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parents: 2466
diff changeset
159 session.conn:close();
2129
fcdcdf00787c *_listener: Update for new net.server API, specifically .listener -> .onincoming, .disconnect -> .ondisconnect
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parents: 2077
diff changeset
160 component_listener.ondisconnect(session.conn, "stream error");
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161 end
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162 end
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163
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164 --- Component connlistener
2129
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parents: 2077
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165 function component_listener.onincoming(conn, data)
1106
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166 local session = sessions[conn];
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167 if not session then
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168 local _send = conn.write;
2135
2119a5d603d8 xmppcomponent_listener: Use new API for writing to components, fixes traceback (thanks Tobias)
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parents: 2129
diff changeset
169 session = { type = "component", conn = conn, send = function (data) return _send(conn, tostring(data)); end };
1106
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170 sessions[conn] = session;
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171
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172 -- Logging functions --
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173
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174 local conn_name = "jcp"..tostring(conn):match("[a-f0-9]+$");
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175 session.log = logger.init(conn_name);
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176 session.close = session_close;
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177
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178 session.log("info", "Incoming Jabber component connection");
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179
3706
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parents: 3634
diff changeset
180 local stream = new_xmpp_stream(session, stream_callbacks);
b758e4ad30a0 xmppcomponent_listener: Switch to util.xmppstream from xmlhandlers
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parents: 3634
diff changeset
181 session.stream = stream;
1106
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182
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183 session.notopen = true;
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184
3706
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diff changeset
185 function session.reset_stream()
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186 session.notopen = true;
b758e4ad30a0 xmppcomponent_listener: Switch to util.xmppstream from xmlhandlers
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187 session.stream:reset();
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188 end
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189
1106
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190 function session.data(conn, data)
3706
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191 local ok, err = stream:feed(data);
1106
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192 if ok then return; end
2758
0476a662dacc net.xmppcomponent_listener: Log invalid XML received from components (as we already do for c2s/s2s)
Matthew Wild <mwild1@gmail.com>
parents: 2757
diff changeset
193 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
3634
0d6b57edb7bd net.xmpp{client,server,component}_listener: s/xml-not-well-formed/not-well-formed/ as per latest bis drafts.
Waqas Hussain <waqas20@gmail.com>
parents: 3604
diff changeset
194 session:close("not-well-formed");
1106
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parents:
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195 end
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196
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diff changeset
197 session.dispatch_stanza = stream_callbacks.handlestanza;
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parents:
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198
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parents:
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199 end
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
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200 if data then
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
diff changeset
201 session.data(conn, data);
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
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202 end
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parents:
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203 end
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204
2129
fcdcdf00787c *_listener: Update for new net.server API, specifically .listener -> .onincoming, .disconnect -> .ondisconnect
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parents: 2077
diff changeset
205 function component_listener.ondisconnect(conn, err)
1106
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206 local session = sessions[conn];
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parents:
diff changeset
207 if session then
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
diff changeset
208 (session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err));
3578
410d2df8a824 net.xmppcomponent_listener: Call session:on_destroy() on session disconnect.
Waqas Hussain <waqas20@gmail.com>
parents: 3540
diff changeset
209 if session.on_destroy then session:on_destroy(err); end
3582
6a14c57b458a net.xmppcomponent_listener: Removed unnecessary and problematic cleanup code.
Waqas Hussain <waqas20@gmail.com>
parents: 3578
diff changeset
210 sessions[conn] = nil;
2759
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
211 for k in pairs(session) do
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
212 if k ~= "log" and k ~= "close" then
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
213 session[k] = nil;
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
214 end
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
215 end
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
216 session.destroyed = true;
1106
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parents:
diff changeset
217 session = nil;
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parents:
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218 end
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
diff changeset
219 end
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parents:
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220
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
diff changeset
221 connlisteners.register('xmppcomponent', component_listener);