prosody
c9b8ec3eb1e9
plugins/mod_c2s.lua

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plugins/mod_c2s.lua @ 4964:c9b8ec3eb1e9

mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
author Matthew Wild <mwild1@gmail.com>
date Sun, 22 Jul 2012 16:59:12 +0100
parent 4852:9cc934f49df0
child 4986:9da430b69f13
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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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9 module:set_global();
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11 local add_task = require "util.timer".add_task;
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12 local new_xmpp_stream = require "util.xmppstream".new;
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13 local nameprep = require "util.encodings".stringprep.nameprep;
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14 local sessionmanager = require "core.sessionmanager";
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15 local st = require "util.stanza";
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16 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session;
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17 local uuid_generate = require "util.uuid".generate;
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19 local xpcall, tostring, type = xpcall, tostring, type;
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20 local traceback = debug.traceback;
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22 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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24 local log = module._log;
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26 local c2s_timeout = module:get_option_number("c2s_timeout");
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27 local stream_close_timeout = module:get_option_number("c2s_close_timeout", 5);
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28 local opt_keepalives = module:get_option_boolean("tcp_keepalives", false);
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30 local sessions = module:shared("sessions");
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31
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32 local stream_callbacks = { default_ns = "jabber:client", handlestanza = core_process_stanza };
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33 local listener = {};
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34
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35 --- Stream events handlers
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36 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
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37 local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
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38
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39 function stream_callbacks.streamopened(session, attr)
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40 local send = session.send;
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41 session.host = nameprep(attr.to);
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42 if not session.host then
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43 session:close{ condition = "improper-addressing",
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44 text = "A valid 'to' attribute is required on stream headers" };
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45 return;
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46 end
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47 session.version = tonumber(attr.version) or 0;
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48 session.streamid = uuid_generate();
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49 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
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51 if not hosts[session.host] then
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52 -- We don't serve this host...
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53 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
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54 return;
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55 end
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56
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57 send("<?xml version='1.0'?>"..st.stanza("stream:stream", {
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58 xmlns = 'jabber:client', ["xmlns:stream"] = 'http://etherx.jabber.org/streams';
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59 id = session.streamid, from = session.host, version = '1.0', ["xml:lang"] = 'en' }):top_tag());
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60
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61 (session.log or log)("debug", "Sent reply <stream:stream> to client");
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62 session.notopen = nil;
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63
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64 -- If session.secure is *false* (not nil) then it means we /were/ encrypting
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65 -- since we now have a new stream header, session is secured
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66 if session.secure == false then
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67 session.secure = true;
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68 end
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69
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70 local features = st.stanza("stream:features");
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71 hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
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72 module:fire_event("stream-features", session, features);
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73
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74 send(features);
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75 end
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76
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77 function stream_callbacks.streamclosed(session)
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78 session.log("debug", "Received </stream:stream>");
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79 session:close();
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80 end
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81
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82 function stream_callbacks.error(session, error, data)
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83 if error == "no-stream" then
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84 session.log("debug", "Invalid opening stream header");
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85 session:close("invalid-namespace");
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86 elseif error == "parse-error" then
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87 (session.log or log)("debug", "Client XML parse error: %s", tostring(data));
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88 session:close("not-well-formed");
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89 elseif error == "stream-error" then
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90 local condition, text = "undefined-condition";
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91 for child in data:children() do
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92 if child.attr.xmlns == xmlns_xmpp_streams then
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93 if child.name ~= "text" then
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94 condition = child.name;
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95 else
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96 text = child:get_text();
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97 end
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diff changeset
98 if condition ~= "undefined-condition" and text then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
99 break;
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
100 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
101 end
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
102 end
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parents:
diff changeset
103 text = condition .. (text and (" ("..text..")") or "");
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
104 session.log("info", "Session closed by remote with error: %s", text);
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
diff changeset
105 session:close(nil, text);
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
106 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
107 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
108
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
109 local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), traceback()); end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
110 function stream_callbacks.handlestanza(session, stanza)
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parents:
diff changeset
111 stanza = session.filter("stanzas/in", stanza);
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
112 if stanza then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
113 return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
114 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
115 end
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
116
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
117 --- Session methods
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diff changeset
118 local function session_close(session, reason)
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119 local log = session.log or log;
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diff changeset
120 if session.conn then
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parents:
diff changeset
121 if session.notopen then
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122 session.send("<?xml version='1.0'?>");
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123 session.send(st.stanza("stream:stream", default_stream_attr):top_tag());
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
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124 end
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Matthew Wild <mwild1@gmail.com>
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diff changeset
125 if reason then
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parents:
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126 if type(reason) == "string" then -- assume stream error
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127 log("info", "Disconnecting client, <stream:error> is: %s", reason);
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128 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
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129 elseif type(reason) == "table" then
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130 if reason.condition then
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131 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
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132 if reason.text then
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133 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
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134 end
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parents:
diff changeset
135 if reason.extra then
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diff changeset
136 stanza:add_child(reason.extra);
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diff changeset
137 end
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138 log("info", "Disconnecting client, <stream:error> is: %s", tostring(stanza));
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diff changeset
139 session.send(stanza);
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140 elseif reason.name then -- a stanza
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141 log("info", "Disconnecting client, <stream:error> is: %s", tostring(reason));
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diff changeset
142 session.send(reason);
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parents:
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143 end
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Matthew Wild <mwild1@gmail.com>
parents:
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144 end
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Matthew Wild <mwild1@gmail.com>
parents:
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145 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
146 session.send("</stream:stream>");
4964
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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147
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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148 function session.send() return false; end
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
diff changeset
149
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parents: 4852
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150 local reason = (reason and (reason.text or reason.condition)) or reason or "session closed";
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
diff changeset
151 session.log("info", "c2s stream for %s closed: %s", session.full_jid or ("<"..session.ip..">"), reason);
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
diff changeset
152
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
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153 -- Authenticated incoming stream may still be sending us stanzas, so wait for </stream:stream> from remote
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
diff changeset
154 local conn = session.conn;
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
155 if reason == "session closed" and not session.notopen and session.type == "c2s" then
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
diff changeset
156 -- Grace time to process data from authenticated cleanly-closed stream
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
157 add_task(stream_close_timeout, function ()
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
158 if not session.destroyed then
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
159 session.log("warn", "Failed to receive a stream close response, closing connection anyway...");
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
160 sm_destroy_session(session, reason);
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
161 conn:close();
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
162 end
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
163 end);
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
164 else
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
165 sm_destroy_session(session, reason);
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
166 conn:close();
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
Matthew Wild <mwild1@gmail.com>
parents: 4852
diff changeset
167 end
4543
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parents:
diff changeset
168 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
169 end
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parents:
diff changeset
170
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parents:
diff changeset
171 --- Port listener
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parents:
diff changeset
172 function listener.onconnect(conn)
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parents:
diff changeset
173 local session = sm_new_session(conn);
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parents:
diff changeset
174 sessions[conn] = session;
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
diff changeset
175
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parents:
diff changeset
176 session.log("info", "Client connected");
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
diff changeset
177
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diff changeset
178 -- Client is using legacy SSL (otherwise mod_tls sets this flag)
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parents:
diff changeset
179 if conn:ssl() then
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
diff changeset
180 session.secure = true;
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parents:
diff changeset
181 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 if opt_keepalives then
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
diff changeset
184 conn:setoption("keepalive", opt_keepalives);
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 end
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186
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parents:
diff changeset
187 session.close = session_close;
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
Matthew Wild <mwild1@gmail.com>
parents:
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188
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189 local stream = new_xmpp_stream(session, stream_callbacks);
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190 session.stream = stream;
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191 session.notopen = true;
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192
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193 function session.reset_stream()
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194 session.notopen = true;
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195 session.stream:reset();
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196 end
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197
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198 local filter = session.filter;
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199 function session.data(data)
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200 data = filter("bytes/in", data);
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201 if data then
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202 local ok, err = stream:feed(data);
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203 if ok then return; end
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204 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
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205 session:close("not-well-formed");
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206 end
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207 end
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208
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209
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210 if c2s_timeout then
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211 add_task(c2s_timeout, function ()
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212 if session.type == "c2s_unauthed" then
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213 session:close("connection-timeout");
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214 end
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215 end);
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216 end
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217
4543
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218 session.dispatch_stanza = stream_callbacks.handlestanza;
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219 end
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220
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221 function listener.onincoming(conn, data)
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222 local session = sessions[conn];
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223 if session then
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224 session.data(data);
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225 end
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226 end
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227
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228 function listener.ondisconnect(conn, err)
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229 local session = sessions[conn];
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230 if session then
4964
c9b8ec3eb1e9 mod_c2s: Don't call ondisconnect manually on close, it is now called by net.server. Replace with inline code for destroying the session, and also waiting for a reply </stream:stream> if there is a chance of further data sent by the client. session.send() on a half-closed stream returns false (and does not deliver the data).
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parents: 4852
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231 (session.log or log)("info", "Client disconnected: %s", err or "connection closed");
4543
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232 sm_destroy_session(session, err);
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233 sessions[conn] = nil;
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234 end
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235 end
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236
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237 function listener.associate_session(conn, session)
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238 sessions[conn] = session;
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239 end
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240
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parents: 4551
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241 module:add_item("net-provider", {
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242 name = "c2s";
4543
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243 listener = listener;
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244 default_port = 5222;
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245 encryption = "starttls";
4626
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Kim Alvefur <zash@zash.se>
parents: 4625
diff changeset
246 multiplex = {
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parents: 4625
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247 pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>";
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parents: 4625
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248 };
4543
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249 });
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250
4610
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parents: 4551
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251 module:add_item("net-provider", {
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252 name = "legacy_ssl";
4543
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253 listener = listener;
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254 encryption = "ssl";
4620
e9dc6ae68c69 mod_c2s, mod_s2s: Add multiplex support
Matthew Wild <mwild1@gmail.com>
parents: 4610
diff changeset
255 multiplex = {
e9dc6ae68c69 mod_c2s, mod_s2s: Add multiplex support
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parents: 4610
diff changeset
256 pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>";
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parents: 4610
diff changeset
257 };
4543
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diff changeset
258 });
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parents:
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259
db27a4c18b6a mod_c2s, sessionmanager, xmppclient_listener: Move all c2s network and stream logic into a new module, mod_c2s
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parents:
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260