Mercurial > prosody-modules

annotate mod_carbons/mod_carbons.lua @ 4047:36b6e3e3f9e2

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mod_conversejs: Disable automatic BOSH/WS endpoint discovery Converse.js 7.0 will enable this by default, but when using this module the BOSH and WebSocket endpoints are provided in the generated HTML, so automatic discovery is not needed and unlikely to work without an additional module.
author Kim Alvefur <zash@zash.se>
date Thu, 18 Jun 2020 15:24:34 +0200
parents 704e4845267b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
1 -- XEP-0280: Message Carbons implementation for Prosody
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2 -- Copyright (C) 2011-2016 Kim Alvefur
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3 --
6d0d2673f95e mod_carbons: Add MIT license statement.
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4 -- This file is MIT/X11 licensed.
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5
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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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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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10 local xmlns_carbons_really_old = "urn:xmpp:carbons:0";
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11 local xmlns_forward = "urn:xmpp:forward:0";
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12 local full_sessions, bare_sessions = prosody.full_sessions, prosody.bare_sessions;
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13
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14 local function toggle_carbons(event)
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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
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19 origin.send(st.reply(stanza));
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20 return true;
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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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24
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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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27 module:hook("iq-set/self/"..xmlns_carbons_old..":enable", toggle_carbons);
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28 module:hook("iq-set/self/"..xmlns_carbons_really_old..":carbons", toggle_carbons);
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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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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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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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40 -- Stanza sent by a local client
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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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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
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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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63
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64 if stanza:get_child("private", xmlns_carbons) then
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65 if not c2s then
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66 stanza:maptags(function(tag)
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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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70 end);
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71 end
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72 module:log("debug", "Message tagged private, ignoring");
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73 return
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74 elseif stanza:get_child("no-copy", "urn:xmpp:hints") then
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75 module:log("debug", "Message has no-copy hint, ignoring");
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76 return
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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
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78 module:log("debug", "MUC PM, ignoring");
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79 return
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80 end
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81
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82 -- Create the carbon copy and wrap it as per the Stanza Forwarding XEP
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83 local copy = st.clone(stanza);
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84 copy.attr.xmlns = "jabber:client";
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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/>
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86 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons })
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87 :tag("forwarded", { xmlns = xmlns_forward })
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88 :add_child(copy):reset();
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89
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90 -- COMPAT
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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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93 :tag("forwarded", { xmlns = xmlns_forward })
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94 :add_child(copy):reset();
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95
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96 -- COMPAT
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97 local carbon_really_old = st.clone(stanza)
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98 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons_really_old }):up()
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99
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100 user_sessions = user_sessions and user_sessions.sessions;
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101 for _, session in pairs(user_sessions) do
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102 -- Carbons are sent to resources that have enabled it
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103 if session.want_carbons
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104 -- but not the resource that sent the message, or the one that it's directed to
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105 and session ~= target_session
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106 -- and isn't among the top resources that would receive the message per standard routing rules
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f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
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parents: 884
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107 and (c2s or session.priority ~= top_priority)
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108 -- don't send v0 carbons (or copies) for c2s
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109 and (not c2s or session.want_carbons ~= xmlns_carbons_really_old) then
833
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110 carbon.attr.to = session.full_jid;
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111 module:log("debug", "Sending carbon to %s", session.full_jid);
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112 local carbon = session.want_carbons == xmlns_carbons_old and carbon_old -- COMPAT
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113 or session.want_carbons == xmlns_carbons_really_old and carbon_really_old -- COMPAT
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114 or carbon;
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115 session.send(carbon);
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116 end
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117 end
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118 end
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119
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0cef5be669de mod_carbons: Consolidate message handlers
Kim Alvefur <zash@zash.se>
parents: 463
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120 local function c2s_message_handler(event)
0cef5be669de mod_carbons: Consolidate message handlers
Kim Alvefur <zash@zash.se>
parents: 463
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121 return message_handler(event, true)
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f28a3f260fc2 mod_carbons: Initial commit.
Kim Alvefur <zash@zash.se>
parents:
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122 end
f28a3f260fc2 mod_carbons: Initial commit.
Kim Alvefur <zash@zash.se>
parents:
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123
f28a3f260fc2 mod_carbons: Initial commit.
Kim Alvefur <zash@zash.se>
parents:
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124 -- Stanzas sent by local clients
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704e4845267b mod_carbons: Comment about the priority
Kim Alvefur <zash@zash.se>
parents: 2371
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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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b41957bf4fd3 mod_carbons: Adjust event hook priorities to be between mod_message and mod_firewall (see #669)
Kim Alvefur <zash@zash.se>
parents: 2338
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126 module:hook("pre-message/bare", c2s_message_handler, 0.05);
b41957bf4fd3 mod_carbons: Adjust event hook priorities to be between mod_message and mod_firewall (see #669)
Kim Alvefur <zash@zash.se>
parents: 2338
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127 module:hook("pre-message/full", c2s_message_handler, 0.05);
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59e80326f2b3 mod_carbons: Fix a typo and unindent a line.
Kim Alvefur <zash@zash.se>
parents: 480
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128 -- Stanzas to local clients
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b41957bf4fd3 mod_carbons: Adjust event hook priorities to be between mod_message and mod_firewall (see #669)
Kim Alvefur <zash@zash.se>
parents: 2338
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129 module:hook("message/bare", message_handler, 0.05);
b41957bf4fd3 mod_carbons: Adjust event hook priorities to be between mod_message and mod_firewall (see #669)
Kim Alvefur <zash@zash.se>
parents: 2338
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130 module:hook("message/full", message_handler, 0.05);
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f28a3f260fc2 mod_carbons: Initial commit.
Kim Alvefur <zash@zash.se>
parents:
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131
f28a3f260fc2 mod_carbons: Initial commit.
Kim Alvefur <zash@zash.se>
parents:
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132 module:add_feature(xmlns_carbons);
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1c64ab8ae374 mod_carbons: Advertise support for the previous version
Kim Alvefur <zash@zash.se>
parents: 850
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133 module:add_feature(xmlns_carbons_old);
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f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
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134 if module:get_option_boolean("carbons_v0") then
f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
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135 module:add_feature(xmlns_carbons_really_old);
f8d08f8ed7de mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
parents: 884
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136 end