Mercurial > prosody-modules

annotate mod_carbons/mod_carbons.lua @ 3772:22f02716819f

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mod_s2s_keepalive: Isolate source host of pings The incoming_s2s table is not restricted to the current virtualhost so this prevents opening more connections than what's needed. Also prevents useless double sending of one whitespace per local host.
author Kim Alvefur <zash@zash.se>
date Mon, 23 Dec 2019 01:18:02 +0100
parents 704e4845267b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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6d0d2673f95e mod_carbons: Add MIT license statement.
Kim Alvefur <zash@zash.se>
parents: 520
diff changeset
1 -- XEP-0280: Message Carbons implementation for Prosody
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ad7f87bd30c8 mod_carbons: Make the conditions for ignoring MUC PMs more specific (fixes #744)
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parents: 1865
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2 -- Copyright (C) 2011-2016 Kim Alvefur
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3 --
6d0d2673f95e mod_carbons: Add MIT license statement.
Kim Alvefur <zash@zash.se>
parents: 520
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4 -- This file is MIT/X11 licensed.
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5
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f28a3f260fc2 mod_carbons: Initial commit.
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parents:
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6 local st = require "util.stanza";
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7 local jid_bare = require "util.jid".bare;
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parents: 837
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8 local xmlns_carbons = "urn:xmpp:carbons:2";
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9 local xmlns_carbons_old = "urn:xmpp:carbons:1";
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2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
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parents: 854
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10 local xmlns_carbons_really_old = "urn:xmpp:carbons:0";
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parents:
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11 local xmlns_forward = "urn:xmpp:forward:0";
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parents: 1794
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12 local full_sessions, bare_sessions = prosody.full_sessions, prosody.bare_sessions;
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parents:
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13
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9927d88a1b2a mod_carbons: Merge enable and disable handlers
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14 local function toggle_carbons(event)
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parents:
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15 local origin, stanza = event.origin, event.stanza;
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16 local state = stanza.tags[1].attr.mode or stanza.tags[1].name;
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17 module:log("debug", "%s %sd carbons", origin.full_jid, state);
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18 origin.want_carbons = state == "enable" and stanza.tags[1].attr.xmlns;
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db8b256f51ff mod_admin_web,mod_carbons,mod_csi_compat,mod_mam_muc,mod_tcpproxy: Explicitly return true
Kim Alvefur <zash@zash.se>
parents: 1795
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19 origin.send(st.reply(stanza));
db8b256f51ff mod_admin_web,mod_carbons,mod_csi_compat,mod_mam_muc,mod_tcpproxy: Explicitly return true
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parents: 1795
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20 return true;
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parents: 743
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21 end
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22 module:hook("iq-set/self/"..xmlns_carbons..":disable", toggle_carbons);
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23 module:hook("iq-set/self/"..xmlns_carbons..":enable", toggle_carbons);
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parents:
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24
850
0900ba54991e mod_carbons: Update to latest version of XEP-0280, while supporting the old version.
Kim Alvefur <zash@zash.se>
parents: 837
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25 -- COMPAT
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26 module:hook("iq-set/self/"..xmlns_carbons_old..":disable", toggle_carbons);
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parents: 1183
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27 module:hook("iq-set/self/"..xmlns_carbons_old..":enable", toggle_carbons);
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parents: 1183
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28 module:hook("iq-set/self/"..xmlns_carbons_really_old..":carbons", toggle_carbons);
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parents: 854
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29
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30 local function message_handler(event, c2s)
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31 local origin, stanza = event.origin, event.stanza;
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dbce8a7726ef mod_carbons: Carbon chat messages or normal messages that have a body
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32 local orig_type = stanza.attr.type or "normal";
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33 local orig_from = stanza.attr.from;
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34 local orig_to = stanza.attr.to;
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35
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51beecac93c2 mod_carbons: Fix logic presendence
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36 if not(orig_type == "chat" or (orig_type == "normal" and stanza:get_child("body"))) then
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37 return -- Only chat type messages
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38 end
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39
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30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
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parents: 832
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40 -- Stanza sent by a local client
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a86131581180 mod_carbons: Less complicated assignments (thanks waqas)
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41 local bare_jid = jid_bare(orig_from);
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42 local target_session = origin;
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43 local top_priority = false;
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44 local user_sessions = bare_sessions[bare_jid];
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45
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46 -- Stanza about to be delivered to a local client
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47 if not c2s then
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48 bare_jid = jid_bare(orig_to);
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49 target_session = full_sessions[orig_to];
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50 user_sessions = bare_sessions[bare_jid];
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51 if not target_session and user_sessions then
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parents: 832
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52 -- The top resources will already receive this message per normal routing rules,
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53 -- so we are going to skip them in order to avoid sending duplicated messages.
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54 local top_resources = user_sessions.top_resources;
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55 top_priority = top_resources and top_resources[1].priority
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56 end
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57 end
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58
585
ce2798a1bc56 mod_carbons: Don't try to send carbons for entirely offline users.
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59 if not user_sessions then
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60 module:log("debug", "Skip carbons for offline user");
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61 return -- No use in sending carbons to an offline user
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62 end
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parents: 545
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63
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b21236b6b8d8 Backed out changeset 853a382c9bd6
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64 if stanza:get_child("private", xmlns_carbons) then
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35c57db6877f mod_carbons: Ignore messages tagged as private in both directions (thanks hoedlmoser)
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parents: 1316
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65 if not c2s then
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parents: 1316
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66 stanza:maptags(function(tag)
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b21236b6b8d8 Backed out changeset 853a382c9bd6
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parents: 1324
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67 if not ( tag.attr.xmlns == xmlns_carbons and tag.name == "private" ) then
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68 return tag;
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69 end
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parents: 1316
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70 end);
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parents: 1316
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71 end
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parents: 585
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72 module:log("debug", "Message tagged private, ignoring");
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73 return
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parents: 900
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74 elseif stanza:get_child("no-copy", "urn:xmpp:hints") then
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parents: 900
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75 module:log("debug", "Message has no-copy hint, ignoring");
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parents: 900
diff changeset
76 return
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feebb38c670d mod_carbons: Fix inverted logic (Thanks Ge0rg)
Kim Alvefur <zash@zash.se>
parents: 2308
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77 elseif not c2s and bare_jid == orig_from and stanza:get_child("x", "http://jabber.org/protocol/muc#user") then
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d3e75f6dde9b mod_carbons: Ignore MUC PMs if tagged as such
Kim Alvefur <zash@zash.se>
parents: 1184
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78 module:log("debug", "MUC PM, ignoring");
d3e75f6dde9b mod_carbons: Ignore MUC PMs if tagged as such
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parents: 1184
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79 return
480
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80 end
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81
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9087431d35f6 mod_carbons: Add comments and rename some variables to make it clearer
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parents: 804
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82 -- Create the carbon copy and wrap it as per the Stanza Forwarding XEP
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Kim Alvefur <zash@zash.se>
parents: 804
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83 local copy = st.clone(stanza);
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parents: 804
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84 copy.attr.xmlns = "jabber:client";
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parents: 804
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85 local carbon = st.message{ from = bare_jid, type = orig_type, }
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d24d87ca3f5f mod_carbons: <forwarded/> should be nested in <sent/>/<received/>
Florian Zeitz <florob@babelmonkeys.de>
parents: 888
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86 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons })
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Kim Alvefur <zash@zash.se>
parents: 618
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87 :tag("forwarded", { xmlns = xmlns_forward })
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88 :add_child(copy):reset();
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parents: 618
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89
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parents: 837
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90 -- COMPAT
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parents: 837
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91 local carbon_old = st.message{ from = bare_jid, type = orig_type, }
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92 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons_old }):up()
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parents: 837
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93 :tag("forwarded", { xmlns = xmlns_forward })
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parents: 837
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94 :add_child(copy):reset();
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parents: 837
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95
884
2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
Kim Alvefur <zash@zash.se>
parents: 854
diff changeset
96 -- COMPAT
2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
Kim Alvefur <zash@zash.se>
parents: 854
diff changeset
97 local carbon_really_old = st.clone(stanza)
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parents: 854
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98 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons_really_old }):up()
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parents: 854
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99
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267548522810 mod_carbons: Remove useless protection against loop that can't happen
Kim Alvefur <zash@zash.se>
parents: 617
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100 user_sessions = user_sessions and user_sessions.sessions;
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30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
101 for _, session in pairs(user_sessions) do
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
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102 -- Carbons are sent to resources that have enabled it
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
103 if session.want_carbons
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
104 -- but not the resource that sent the message, or the one that it's directed to
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
105 and session ~= target_session
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
106 -- and isn't among the top resources that would receive the message per standard routing rules
888
f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
diff changeset
107 and (c2s or session.priority ~= top_priority)
f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
diff changeset
108 -- don't send v0 carbons (or copies) for c2s
f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
diff changeset
109 and (not c2s or session.want_carbons ~= xmlns_carbons_really_old) then
833
30d49c26d219 mod_carbons: Optimize and clarify (thanks waqas)
Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
110 carbon.attr.to = session.full_jid;
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Kim Alvefur <zash@zash.se>
parents: 832
diff changeset
111 module:log("debug", "Sending carbon to %s", session.full_jid);
884
2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
Kim Alvefur <zash@zash.se>
parents: 854
diff changeset
112 local carbon = session.want_carbons == xmlns_carbons_old and carbon_old -- COMPAT
2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
Kim Alvefur <zash@zash.se>
parents: 854
diff changeset
113 or session.want_carbons == xmlns_carbons_really_old and carbon_really_old -- COMPAT
2ece37bf9cc6 mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
Kim Alvefur <zash@zash.se>
parents: 854
diff changeset
114 or carbon;
832
9087431d35f6 mod_carbons: Add comments and rename some variables to make it clearer
Kim Alvefur <zash@zash.se>
parents: 804
diff changeset
115 session.send(carbon);
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parents:
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116 end
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parents:
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117 end
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parents:
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118 end
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parents:
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119
480
0cef5be669de mod_carbons: Consolidate message handlers
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120 local function c2s_message_handler(event)
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121 return message_handler(event, true)
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122 end
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124 -- Stanzas sent by local clients
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125 module:hook("pre-message/host", c2s_message_handler, 0.05); -- priority between mod_message (0 in 0.9) and mod_firewall (0.1)
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126 module:hook("pre-message/bare", c2s_message_handler, 0.05);
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127 module:hook("pre-message/full", c2s_message_handler, 0.05);
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128 -- Stanzas to local clients
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129 module:hook("message/bare", message_handler, 0.05);
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130 module:hook("message/full", message_handler, 0.05);
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132 module:add_feature(xmlns_carbons);
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133 module:add_feature(xmlns_carbons_old);
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134 if module:get_option_boolean("carbons_v0") then
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135 module:add_feature(xmlns_carbons_really_old);
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136 end