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annotate mod_smacks/mod_smacks.lua @ 1703:a53385a78a64

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mod_smacks: Add stanza counting filter when resuming session
author Kim Alvefur <zash@zash.se>
date Wed, 06 May 2015 00:58:55 +0200
parents 5f5ff061b316
children 97291a4b17bd
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5f5ff061b316 mod_smacks: Add license header
Kim Alvefur <zash@zash.se>
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1 -- XEP-0198: Stream Management for Prosody IM
5f5ff061b316 mod_smacks: Add license header
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2 --
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3 -- Copyright (C) 2010-2015 Matthew Wild
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Kim Alvefur <zash@zash.se>
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4 -- Copyright (C) 2010 Waqas Hussain
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Kim Alvefur <zash@zash.se>
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5 -- Copyright (C) 2012-2015 Kim Alvefur
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Kim Alvefur <zash@zash.se>
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6 -- Copyright (C) 2012 Thijs Alkemade
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Kim Alvefur <zash@zash.se>
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7 -- Copyright (C) 2014 Florian Zeitz
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8 --
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Kim Alvefur <zash@zash.se>
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9 -- This project is MIT/X11 licensed. Please see the
5f5ff061b316 mod_smacks: Add license header
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10 -- COPYING file in the source package for more information.
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11 --
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12
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parents:
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13 local st = require "util.stanza";
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14 local uuid_generate = require "util.uuid".generate;
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16 local t_insert, t_remove = table.insert, table.remove;
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17 local math_min = math.min;
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18 local os_time = os.time;
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19 local tonumber, tostring = tonumber, tostring;
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bc24f58a0d39 mod_smacks: Use filters for catching incoming stanzas (more reliable and efficient), also add some logic to make compatible with the stream resumption module (coming soon)
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20 local add_filter = require "util.filters".add_filter;
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
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21 local timer = require "util.timer";
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db2a40cbd6ef Add a <delay> to stanzas that are queued (and don't have one already), so clients can show them with the original timestamp.
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22 local datetime = require "util.datetime";
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23
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24 local xmlns_sm2 = "urn:xmpp:sm:2";
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25 local xmlns_sm3 = "urn:xmpp:sm:3";
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26 local xmlns_errors = "urn:ietf:params:xml:ns:xmpp-stanzas";
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27 local xmlns_delay = "urn:xmpp:delay";
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29 local sm2_attr = { xmlns = xmlns_sm2 };
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30 local sm3_attr = { xmlns = xmlns_sm3 };
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31
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32 local resume_timeout = module:get_option_number("smacks_hibernation_time", 300);
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33 local s2s_smacks = module:get_option_boolean("smacks_enabled_s2s", false);
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34 local max_unacked_stanzas = module:get_option_number("smacks_max_unacked_stanzas", 0);
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713c6791fbcc mod_smacks: Import prosody.core_process_stanza()
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35 local core_process_stanza = prosody.core_process_stanza;
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36 local sessionmanager = require"core.sessionmanager";
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37
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d87131b29bbd mod_smacks: Remove dependency on connlisteners (use sessions table shared by mod_c2s directly)
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38 local c2s_sessions = module:shared("/*/c2s/sessions");
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parents: 263
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39 local session_registry = {};
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40
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36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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41 local function can_do_smacks(session, advertise_only)
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42 if session.smacks then return false, "unexpected-request", "Stream management is already enabled"; end
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43
591
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44 local session_type = session.type;
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45 if session_type == "c2s" then
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46 if not(advertise_only) and not(session.resource) then -- Fail unless we're only advertising sm
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47 return false, "unexpected-request", "Client must bind a resource before enabling stream management";
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parents: 590
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48 end
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49 return true;
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50 elseif s2s_smacks and (session_type == "s2sin" or session_type == "s2sout") then
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parents: 590
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51 return true;
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parents: 590
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52 end
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
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53 return false, "service-unavailable", "Stream management is not available for this stream";
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parents: 590
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54 end
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parents: 590
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55
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56 module:hook("stream-features",
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57 function (event)
591
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parents: 590
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58 if can_do_smacks(event.origin, true) then
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59 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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60 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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61 end
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62 end);
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64 module:hook("s2s-stream-features",
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65 function (event)
591
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parents: 590
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66 if can_do_smacks(event.origin, true) then
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67 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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68 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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parents: 478
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69 end
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70 end);
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71
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72 local function outgoing_stanza_filter(stanza, session)
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73 local is_stanza = stanza.attr and not stanza.attr.xmlns and not stanza.name:find":";
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74 if is_stanza and not stanza._cached then -- Stanza in default stream namespace
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75 local queue = session.outgoing_stanza_queue;
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76 local cached_stanza = st.clone(stanza);
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77 cached_stanza._cached = true;
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78
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79 if cached_stanza and cached_stanza.name ~= "iq" and cached_stanza:get_child("delay", xmlns_delay) == nil then
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80 cached_stanza = cached_stanza:tag("delay", { xmlns = xmlns_delay, from = session.host, stamp = datetime.datetime()});
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81 end
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82
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83 queue[#queue+1] = cached_stanza;
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84 session.log("debug", "#queue = %d", #queue);
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85 if session.hibernating then
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86 session.log("debug", "hibernating, stanza queued");
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87 return ""; -- Hack to make session.send() not return nil
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88 end
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05fa54404012 mod_smacks: Send ack requests by serializing and concatenating them to outgoing stanzas, using a timer might cause high CPU usage
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89 if #queue > max_unacked_stanzas and not session.awaiting_ack then
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90 session.awaiting_ack = true;
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91 return tostring(stanza)..tostring(st.stanza("r", { xmlns = session.smacks }));
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92 end
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93 end
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94 return stanza;
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95 end
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96
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97 local function count_incoming_stanzas(stanza, session)
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98 if not stanza.attr.xmlns then
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99 session.handled_stanza_count = session.handled_stanza_count + 1;
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100 session.log("debug", "Handled %d incoming stanzas", session.handled_stanza_count);
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101 end
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102 return stanza;
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103 end
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parents: 1518
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104
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105 local function wrap_session_out(session, resume)
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parents: 263
diff changeset
106 if not resume then
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107 session.outgoing_stanza_queue = {};
345
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diff changeset
108 session.last_acknowledged_stanza = 0;
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parents: 263
diff changeset
109 end
1343
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1325
diff changeset
110
1520
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parents: 1518
diff changeset
111 add_filter(session, "stanzas/out", outgoing_stanza_filter, -1000);
988
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
112
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
113 local session_close = session.close;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
114 function session.close(...)
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
115 if session.resumption_token then
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
116 session_registry[session.resumption_token] = nil;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
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parents: 987
diff changeset
117 session.resumption_token = nil;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
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parents: 987
diff changeset
118 end
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
119 return session_close(...);
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parents: 987
diff changeset
120 end
1529
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diff changeset
121 return session;
16893646a458 mod_smacks: Move wrap_session() contents into separate direction-specific routines
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parents: 1528
diff changeset
122 end
1343
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parents: 1325
diff changeset
123
1529
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diff changeset
124 local function wrap_session_in(session, resume)
345
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diff changeset
125 if not resume then
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diff changeset
126 session.handled_stanza_count = 0;
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diff changeset
127 end
1703
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parents: 1670
diff changeset
128 add_filter(session, "stanzas/in", count_incoming_stanzas, 1000);
345
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diff changeset
129
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diff changeset
130 return session;
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131 end
201
bc24f58a0d39 mod_smacks: Use filters for catching incoming stanzas (more reliable and efficient), also add some logic to make compatible with the stream resumption module (coming soon)
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parents: 200
diff changeset
132
1529
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diff changeset
133 local function wrap_session(session, resume)
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134 wrap_session_out(session, resume);
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diff changeset
135 wrap_session_in(session, resume);
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diff changeset
136 return session;
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parents: 1528
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137 end
16893646a458 mod_smacks: Move wrap_session() contents into separate direction-specific routines
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parents: 1528
diff changeset
138
1298
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diff changeset
139 function handle_enable(session, stanza, xmlns_sm)
591
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
diff changeset
140 local ok, err, err_text = can_do_smacks(session);
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
diff changeset
141 if not ok then
590
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
142 session.log("warn", "Failed to enable smacks: %s", err_text); -- TODO: XEP doesn't say we can send error text, should it?
1527
06ecc5b3ca46 mod_smacks: Send failure correctly on s2s
Kim Alvefur <zash@zash.se>
parents: 1526
diff changeset
143 (session.sends2s or session.send)(st.stanza("failed", { xmlns = xmlns_sm }):tag(err, { xmlns = xmlns_errors}));
590
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
144 return true;
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
145 end
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
146
345
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diff changeset
147 module:log("debug", "Enabling stream management");
1520
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diff changeset
148 session.smacks = xmlns_sm;
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diff changeset
149
1520
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diff changeset
150 wrap_session(session, false);
1343
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diff changeset
151
345
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diff changeset
152 local resume_token;
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diff changeset
153 local resume = stanza.attr.resume;
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parents: 263
diff changeset
154 if resume == "true" or resume == "1" then
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parents: 263
diff changeset
155 resume_token = uuid_generate();
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diff changeset
156 session_registry[resume_token] = session;
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parents: 263
diff changeset
157 session.resumption_token = resume_token;
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parents: 263
diff changeset
158 end
576
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parents: 478
diff changeset
159 (session.sends2s or session.send)(st.stanza("enabled", { xmlns = xmlns_sm, id = resume_token, resume = resume }));
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parents: 478
diff changeset
160 return true;
1298
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diff changeset
161 end
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diff changeset
162 module:hook_stanza(xmlns_sm2, "enable", function (session, stanza) return handle_enable(session, stanza, xmlns_sm2); end, 100);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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diff changeset
163 module:hook_stanza(xmlns_sm3, "enable", function (session, stanza) return handle_enable(session, stanza, xmlns_sm3); end, 100);
576
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parents: 478
diff changeset
164
1530
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parents: 1529
diff changeset
165 module:hook_stanza("http://etherx.jabber.org/streams", "features",
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parents: 1529
diff changeset
166 function (session, stanza)
1531
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diff changeset
167 module:add_timer(0, function ()
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
168 if can_do_smacks(session) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
169 if stanza:get_child("sm", xmlns_sm3) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
170 session.sends2s(st.stanza("enable", sm3_attr));
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
171 session.smacks = xmlns_sm3;
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parents: 1530
diff changeset
172 elseif stanza:get_child("sm", xmlns_sm2) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
173 session.sends2s(st.stanza("enable", sm2_attr));
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parents: 1530
diff changeset
174 session.smacks = xmlns_sm2;
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
175 else
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
176 return;
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
177 end
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
178 wrap_session_out(session, false);
1530
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parents: 1529
diff changeset
179 end
1531
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diff changeset
180 end);
1530
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parents: 1529
diff changeset
181 end);
fb7cd669f41b mod_smacks: Initiate outgoing smacks on s2s when sending request and incoming when the remote says enabled
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parents: 1529
diff changeset
182
1298
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diff changeset
183 function handle_enabled(session, stanza, xmlns_sm)
576
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Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
184 module:log("debug", "Enabling stream management");
1520
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parents: 1518
diff changeset
185 session.smacks = xmlns_sm;
1343
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diff changeset
186
1530
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parents: 1529
diff changeset
187 wrap_session_in(session, false);
576
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Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
188
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
189 -- FIXME Resume?
1343
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diff changeset
190
345
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parents: 263
diff changeset
191 return true;
1298
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parents: 1293
diff changeset
192 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
193 module:hook_stanza(xmlns_sm2, "enabled", function (session, stanza) return handle_enabled(session, stanza, xmlns_sm2); end, 100);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
194 module:hook_stanza(xmlns_sm3, "enabled", function (session, stanza) return handle_enabled(session, stanza, xmlns_sm3); end, 100);
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
195
1298
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diff changeset
196 function handle_r(origin, stanza, xmlns_sm)
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
197 if not origin.smacks then
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
198 module:log("debug", "Received ack request from non-smack-enabled session");
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
199 return;
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
200 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
201 module:log("debug", "Received ack request, acking for %d", origin.handled_stanza_count);
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
202 -- Reply with <a>
255
9b9b089407b1 mod_smacks: Fix to reply to stream for s2s sessions
Matthew Wild <mwild1@gmail.com>
parents: 220
diff changeset
203 (origin.sends2s or origin.send)(st.stanza("a", { xmlns = xmlns_sm, h = tostring(origin.handled_stanza_count) }));
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
204 return true;
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
205 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
206 module:hook_stanza(xmlns_sm2, "r", function (origin, stanza) return handle_r(origin, stanza, xmlns_sm2); end);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
207 module:hook_stanza(xmlns_sm3, "r", function (origin, stanza) return handle_r(origin, stanza, xmlns_sm3); end);
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
208
1298
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diff changeset
209 function handle_a(origin, stanza)
160
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parents:
diff changeset
210 if not origin.smacks then return; end
200
64a573203c20 mod_smacks: Better logic for deciding what is a stanza and what is not, and deciding when to send ack requests
Matthew Wild <mwild1@gmail.com>
parents: 160
diff changeset
211 origin.awaiting_ack = nil;
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
212 -- Remove handled stanzas from outgoing_stanza_queue
258
36648205b10a mod_smacks: Add commented log statement for future debugging
Matthew Wild <mwild1@gmail.com>
parents: 257
diff changeset
213 --log("debug", "ACK: h=%s, last=%s", stanza.attr.h or "", origin.last_acknowledged_stanza or "");
1407
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
214 local h = tonumber(stanza.attr.h);
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
215 if not h then
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
216 origin:close{ condition = "invalid-xml"; text = "Missing or invalid 'h' attribute"; };
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
217 end
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
218 local handled_stanza_count = h-origin.last_acknowledged_stanza;
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
219 local queue = origin.outgoing_stanza_queue;
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
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parents: 202
diff changeset
220 if handled_stanza_count > #queue then
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
221 origin.log("warn", "The client says it handled %d new stanzas, but we only sent %d :)",
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
222 handled_stanza_count, #queue);
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
223 origin.log("debug", "Client h: %d, our h: %d", tonumber(stanza.attr.h), origin.last_acknowledged_stanza);
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
224 for i=1,#queue do
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
225 origin.log("debug", "Q item %d: %s", i, tostring(queue[i]));
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
226 end
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
227 end
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
228 for i=1,math_min(handled_stanza_count,#queue) do
160
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parents:
diff changeset
229 t_remove(origin.outgoing_stanza_queue, 1);
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parents:
diff changeset
230 end
1406
7d76dd2310ef mod_smacks: Add more debug logging
Kim Alvefur <zash@zash.se>
parents: 1405
diff changeset
231 origin.log("debug", "#queue = %d", #queue);
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
232 origin.last_acknowledged_stanza = origin.last_acknowledged_stanza + handled_stanza_count;
160
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parents:
diff changeset
233 return true;
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
234 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
235 module:hook_stanza(xmlns_sm2, "a", handle_a);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
236 module:hook_stanza(xmlns_sm3, "a", handle_a);
160
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parents:
diff changeset
237
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
238 --TODO: Optimise... incoming stanzas should be handled by a per-session
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parents:
diff changeset
239 -- function that has a counter as an upvalue (no table indexing for increments,
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
240 -- and won't slow non-198 sessions). We can also then remove the .handled flag
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
241 -- on stanzas
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
242
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 function handle_unacked_stanzas(session)
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parents:
diff changeset
244 local queue = session.outgoing_stanza_queue;
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parents:
diff changeset
245 local error_attr = { type = "cancel" };
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parents:
diff changeset
246 if #queue > 0 then
202
d11478ae374e mod_smacks: Clean outgoing stanza queue correctly on session close
Matthew Wild <mwild1@gmail.com>
parents: 201
diff changeset
247 session.outgoing_stanza_queue = {};
160
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parents:
diff changeset
248 for i=1,#queue do
256
57de4a7840ef mod_smacks: Fixes for storing the unacked stanzas so that they can be properly replayed to clients on stream resume
Matthew Wild <mwild1@gmail.com>
parents: 255
diff changeset
249 local reply = st.reply(queue[i]);
160
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parents:
diff changeset
250 if reply.attr.to ~= session.full_jid then
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
251 reply.attr.type = "error";
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parents:
diff changeset
252 reply:tag("error", error_attr)
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parents:
diff changeset
253 :tag("recipient-unavailable", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"});
256
57de4a7840ef mod_smacks: Fixes for storing the unacked stanzas so that they can be properly replayed to clients on stream resume
Matthew Wild <mwild1@gmail.com>
parents: 255
diff changeset
254 core_process_stanza(session, reply);
160
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parents:
diff changeset
255 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
256 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
257 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
258 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
259
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
260 module:hook("pre-resource-unbind", function (event)
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
261 local session, err = event.session, event.error;
1024
d7655e634c30 mod_smacks: Allow resumption if the TCP connection is closed from our end, c15cea87036f ensures distinction from cleanly closed streams (thanks Lance)
Kim Alvefur <zash@zash.se>
parents: 994
diff changeset
262 if session.smacks then
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
263 if not session.resumption_token then
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
264 local queue = session.outgoing_stanza_queue;
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
265 if #queue > 0 then
1405
26a2092e289f mod_smacks: Log things attached to sessions instead of the module
Kim Alvefur <zash@zash.se>
parents: 1343
diff changeset
266 session.log("warn", "Destroying session with %d unacked stanzas", #queue);
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
267 handle_unacked_stanzas(session);
160
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parents:
diff changeset
268 end
257
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Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
269 else
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
270 session.log("debug", "mod_smacks hibernating session for up to %d seconds", resume_timeout);
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
271 local hibernate_time = os_time(); -- Track the time we went into hibernation
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parents: 263
diff changeset
272 session.hibernating = hibernate_time;
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
273 local resumption_token = session.resumption_token;
257
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parents: 256
diff changeset
274 timer.add_task(resume_timeout, function ()
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
275 session.log("debug", "mod_smacks hibernation timeout reached...");
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
276 -- We need to check the current resumption token for this resource
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
277 -- matches the smacks session this timer is for in case it changed
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
278 -- (for example, the client may have bound a new resource and
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
279 -- started a new smacks session, or not be using smacks)
810
464ed063a8f2 mod_smacks: Less table indexing!
Kim Alvefur <zash@zash.se>
parents: 757
diff changeset
280 local curr_session = full_sessions[session.full_jid];
1598
043d08448d87 mod_smacks: Remove negation of condition, most likely a leftover from debugging
Kim Alvefur <zash@zash.se>
parents: 1597
diff changeset
281 if session.destroyed then
987
fabff75bfc3f mod_smacks: If a hibernating session was destroyed before the timeout, don't destroy it again or say that it was resumed
Kim Alvefur <zash@zash.se>
parents: 925
diff changeset
282 session.log("debug", "The session has already been destroyed");
fabff75bfc3f mod_smacks: If a hibernating session was destroyed before the timeout, don't destroy it again or say that it was resumed
Kim Alvefur <zash@zash.se>
parents: 925
diff changeset
283 elseif curr_session and curr_session.resumption_token == resumption_token
345
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parents: 263
diff changeset
284 -- Check the hibernate time still matches what we think it is,
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
285 -- otherwise the session resumed and re-hibernated.
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
286 and session.hibernating == hibernate_time then
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
287 session.log("debug", "Destroying session for hibernating too long");
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
288 session_registry[session.resumption_token] = nil;
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
289 session.resumption_token = nil;
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
290 sessionmanager.destroy_session(session);
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
291 else
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
292 session.log("debug", "Session resumed before hibernation timeout, all is well")
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
293 end
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
294 end);
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
295 return true; -- Postpone destruction for now
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
296 end
1343
7dbde05b48a9 all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1325
diff changeset
297
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
298 end
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
299 end);
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
300
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
301 function handle_resume(session, stanza, xmlns_sm)
925
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
302 if session.full_jid then
994
487cd02aada0 mod_smacks: Complain a little louder about clients trying to resume after resource binding
Kim Alvefur <zash@zash.se>
parents: 988
diff changeset
303 session.log("warn", "Tried to resume after resource binding");
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
304 session.send(st.stanza("failed", { xmlns = xmlns_sm })
925
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
305 :tag("unexpected-request", { xmlns = xmlns_errors })
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
306 );
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
307 return true;
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
308 end
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
309
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
310 local id = stanza.attr.previd;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
311 local original_session = session_registry[id];
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
312 if not original_session then
588
8042558336b6 mod_smacks: Log message when client tries to resume unknown session
Matthew Wild <mwild1@gmail.com>
parents: 587
diff changeset
313 session.log("debug", "Tried to resume non-existent session with id %s", id);
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
314 session.send(st.stanza("failed", { xmlns = xmlns_sm })
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
315 :tag("item-not-found", { xmlns = xmlns_errors })
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
316 );
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
317 elseif session.username == original_session.username
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
318 and session.host == original_session.host then
587
322a14acd974 mod_smacks: Add log message on resume
Matthew Wild <mwild1@gmail.com>
parents: 586
diff changeset
319 session.log("debug", "mod_smacks resuming existing session...");
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
320 -- TODO: All this should move to sessionmanager (e.g. session:replace(new_session))
623
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
321 if original_session.conn then
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
322 session.log("debug", "mod_smacks closing an old connection for this session");
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
323 local conn = original_session.conn;
640
d87131b29bbd mod_smacks: Remove dependency on connlisteners (use sessions table shared by mod_c2s directly)
Matthew Wild <mwild1@gmail.com>
parents: 625
diff changeset
324 c2s_sessions[conn] = nil;
623
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
325 conn:close();
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
326 end
345
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327 original_session.ip = session.ip;
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328 original_session.conn = session.conn;
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329 original_session.send = session.send;
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330 original_session.filter = session.filter;
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331 original_session.send.filter = session.filter;
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332 original_session.data.filter = session.filter;
345
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333 original_session.stream = session.stream;
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334 original_session.secure = session.secure;
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335 original_session.hibernating = nil;
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336 wrap_session(original_session, true);
345
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337 -- Inform xmppstream of the new session (passed to its callbacks)
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338 original_session.stream:set_session(original_session);
345
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339 -- Similar for connlisteners
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340 c2s_sessions[session.conn] = original_session;
345
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341
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342 session.send(st.stanza("resumed", { xmlns = xmlns_sm,
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343 h = original_session.handled_stanza_count, previd = id }));
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344
345
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345 -- Fake an <a> with the h of the <resume/> from the client
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346 original_session:dispatch_stanza(st.stanza("a", { xmlns = xmlns_sm,
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347 h = stanza.attr.h }));
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348
345
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349 -- Ok, we need to re-send any stanzas that the client didn't see
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350 -- ...they are what is now left in the outgoing stanza queue
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351 local queue = original_session.outgoing_stanza_queue;
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352 session.log("debug", "#queue = %d", #queue);
345
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353 for i=1,#queue do
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354 session.send(queue[i]);
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355 end
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356 session.log("debug", "#queue = %d -- after send", #queue);
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357 else
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358 module:log("warn", "Client %s@%s[%s] tried to resume stream for %s@%s[%s]",
345
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359 session.username or "?", session.host or "?", session.type,
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360 original_session.username or "?", original_session.host or "?", original_session.type);
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361 session.send(st.stanza("failed", { xmlns = xmlns_sm })
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362 :tag("not-authorized", { xmlns = xmlns_errors }));
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363 end
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364 return true;
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365 end
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366 module:hook_stanza(xmlns_sm2, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm2); end);
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367 module:hook_stanza(xmlns_sm3, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm3); end);