Mercurial > prosody-modules
annotate mod_carbons/mod_carbons.lua @ 989:7c04c5856daa
mod_register_json: major code overhaul into a token based registration & verification system.
author | Marco Cirillo <maranda@lightwitch.org> |
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date | Mon, 29 Apr 2013 22:53:39 +0200 |
parents | aca1c5eb0508 |
children | 28d4b58bcc3b |
rev | line source |
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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 Kim Alvefur |
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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 = full_sessions, bare_sessions; |
462 | 13 |
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14 local function toggle_carbons(event) |
462 | 15 local origin, stanza = event.origin, event.stanza; |
16 if stanza.attr.type == "set" then | |
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17 local state = stanza.tags[1].name; |
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18 module:log("debug", "%s %sd carbons", origin.full_jid, state); |
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19 origin.want_carbons = state == "enable" and stanza.tags[1].attr.xmlns; |
462 | 20 origin.send(st.reply(stanza)); |
21 return true | |
22 end | |
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23 end |
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24 module:hook("iq/self/"..xmlns_carbons..":disable", toggle_carbons); |
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25 module:hook("iq/self/"..xmlns_carbons..":enable", toggle_carbons); |
462 | 26 |
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27 -- COMPAT |
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28 module:hook("iq/self/"..xmlns_carbons_old..":disable", toggle_carbons); |
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29 module:hook("iq/self/"..xmlns_carbons_old..":enable", toggle_carbons); |
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30 |
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31 -- COMPAT :( |
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32 if module:get_option_boolean("carbons_v0") then |
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33 module:hook("iq/self/"..xmlns_carbons_really_old..":carbons", function(event) |
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34 local origin, stanza = event.origin, event.stanza; |
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35 if stanza.attr.type == "set" then |
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36 local state = stanza.tags[1].attr.mode; |
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37 origin.want_carbons = state == "enable" and xmlns_carbons_really_old; |
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38 origin.send(st.reply(stanza)); |
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39 return true; |
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40 end |
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41 end); |
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42 end |
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43 |
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44 local function message_handler(event, c2s) |
462 | 45 local origin, stanza = event.origin, event.stanza; |
46 local orig_type = stanza.attr.type; | |
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47 local orig_from = stanza.attr.from; |
462 | 48 local orig_to = stanza.attr.to; |
49 | |
50 if not (orig_type == nil | |
51 or orig_type == "normal" | |
52 or orig_type == "chat") then | |
480
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53 return -- No carbons for messages of type error or headline |
462 | 54 end |
55 | |
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56 -- Stanza sent by a local client |
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57 local bare_jid = jid_bare(orig_from); |
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58 local target_session = origin; |
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59 local top_priority = false; |
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60 local user_sessions = bare_sessions[bare_jid]; |
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61 |
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62 -- Stanza about to be delivered to a local client |
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63 if not c2s then |
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64 bare_jid = jid_bare(orig_to); |
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65 target_session = full_sessions[orig_to]; |
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66 user_sessions = bare_sessions[bare_jid]; |
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67 if not target_session and user_sessions then |
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68 -- The top resources will already receive this message per normal routing rules, |
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69 -- so we are going to skip them in order to avoid sending duplicated messages. |
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70 local top_resources = user_sessions.top_resources; |
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71 top_priority = top_resources and top_resources[1].priority |
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72 end |
462 | 73 end |
74 | |
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75 if not user_sessions then |
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76 module:log("debug", "Skip carbons for offline user"); |
585
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77 return -- No use in sending carbons to an offline user |
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78 end |
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79 |
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80 if not c2s and stanza:get_child("private", xmlns_carbons) then |
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81 stanza:maptags(function(tag) |
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82 return tag.attr.xmlns == xmlns_carbons |
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83 and tag.name == "private" and tag or nil; |
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84 end); |
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85 module:log("debug", "Message tagged private, ignoring"); |
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86 return |
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87 end |
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88 |
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89 -- Create the carbon copy and wrap it as per the Stanza Forwarding XEP |
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90 local copy = st.clone(stanza); |
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91 copy.attr.xmlns = "jabber:client"; |
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92 local carbon = st.message{ from = bare_jid, type = orig_type, } |
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93 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons }) |
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94 :tag("forwarded", { xmlns = xmlns_forward }) |
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95 :add_child(copy):reset(); |
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96 |
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97 -- COMPAT |
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98 local carbon_old = st.message{ from = bare_jid, type = orig_type, } |
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99 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons_old }):up() |
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100 :tag("forwarded", { xmlns = xmlns_forward }) |
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101 :add_child(copy):reset(); |
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102 |
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103 -- COMPAT |
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104 local carbon_really_old = st.clone(stanza) |
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105 :tag(c2s and "sent" or "received", { xmlns = xmlns_carbons_really_old }):up() |
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106 |
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107 user_sessions = user_sessions and user_sessions.sessions; |
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108 for _, session in pairs(user_sessions) do |
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109 -- Carbons are sent to resources that have enabled it |
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110 if session.want_carbons |
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111 -- but not the resource that sent the message, or the one that it's directed to |
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112 and session ~= target_session |
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113 -- and isn't among the top resources that would receive the message per standard routing rules |
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114 and (c2s or session.priority ~= top_priority) |
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115 -- don't send v0 carbons (or copies) for c2s |
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116 and (not c2s or session.want_carbons ~= xmlns_carbons_really_old) then |
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117 carbon.attr.to = session.full_jid; |
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118 module:log("debug", "Sending carbon to %s", session.full_jid); |
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119 local carbon = session.want_carbons == xmlns_carbons_old and carbon_old -- COMPAT |
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120 or session.want_carbons == xmlns_carbons_really_old and carbon_really_old -- COMPAT |
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121 or carbon; |
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122 session.send(carbon); |
462 | 123 end |
124 end | |
125 end | |
126 | |
480
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127 local function c2s_message_handler(event) |
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128 return message_handler(event, true) |
462 | 129 end |
130 | |
131 -- Stanzas sent by local clients | |
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132 module:hook("pre-message/host", c2s_message_handler, 1); |
462 | 133 module:hook("pre-message/bare", c2s_message_handler, 1); |
134 module:hook("pre-message/full", c2s_message_handler, 1); | |
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mod_carbons: Fix a typo and unindent a line.
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parents:
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135 -- Stanzas to local clients |
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136 module:hook("message/bare", message_handler, 1); |
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137 module:hook("message/full", message_handler, 1); |
462 | 138 |
139 module:add_feature(xmlns_carbons); | |
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mod_carbons: Advertise support for the previous version
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850
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140 module:add_feature(xmlns_carbons_old); |
888
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mod_carbons: Make support for v0 disabled by default, don't send v0 carbons for c2s
Michael Holzt <kju@fqdn.org>
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141 if module:get_option_boolean("carbons_v0") then |
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142 module:add_feature(xmlns_carbons_really_old); |
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Michael Holzt <kju@fqdn.org>
parents:
884
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143 end |