Mercurial > prosody-modules
annotate mod_carbons/mod_carbons.lua @ 3931:2e8b284ac8b3
mod_rest: Add an XML error formatter (fixes #1499)
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 07 Mar 2020 17:35:09 +0100 |
parents | 704e4845267b |
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521
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1 -- XEP-0280: Message Carbons implementation for Prosody |
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2 -- Copyright (C) 2011-2016 Kim Alvefur |
521
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3 -- |
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4 -- This file is MIT/X11 licensed. |
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5 |
462 | 6 local st = require "util.stanza"; |
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"; |
462 | 11 local xmlns_forward = "urn:xmpp:forward:0"; |
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12 local full_sessions, bare_sessions = prosody.full_sessions, prosody.bare_sessions; |
462 | 13 |
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14 local function toggle_carbons(event) |
462 | 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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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); |
462 | 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); |
884
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29 |
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30 local function message_handler(event, c2s) |
462 | 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; |
462 | 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 |
462 | 38 end |
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 |
462 | 57 end |
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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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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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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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 |
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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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mod_carbons: Support the pre-forwarding version of Carbons. Please don't implement this.
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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
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114 or carbon; |
832
9087431d35f6
mod_carbons: Add comments and rename some variables to make it clearer
Kim Alvefur <zash@zash.se>
parents:
804
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115 session.send(carbon); |
462 | 116 end |
117 end | |
118 end | |
119 | |
480
0cef5be669de
mod_carbons: Consolidate message handlers
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120 local function c2s_message_handler(event) |
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mod_carbons: Consolidate message handlers
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121 return message_handler(event, true) |
462 | 122 end |
123 | |
124 -- Stanzas sent by local clients | |
2373
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) |
2371
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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); |
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mod_carbons: Adjust event hook priorities to be between mod_message and mod_firewall (see #669)
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parents:
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127 module:hook("pre-message/full", c2s_message_handler, 0.05); |
510
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 |
2371
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)
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parents:
2338
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130 module:hook("message/full", message_handler, 0.05); |
462 | 131 |
132 module:add_feature(xmlns_carbons); | |
854
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); |
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
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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
diff
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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
diff
changeset
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136 end |