Annotate

mod_mam/mod_mam.lua @ 635:30be50d2537f

mod_mam: Update header
author Kim Alvefur <zash@zash.se>
date Sun, 22 Apr 2012 13:29:57 +0200
parent 634:061584efe82f
child 666:b42b75f3bda0
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1 -- XEP-0313: Message Archive Management for Prosody
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2 -- Copyright (C) 2011-2012 Kim Alvefur
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3 --
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4 -- This file is MIT/X11 licensed.
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5
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6 local xmlns_mam = "urn:xmpp:mam:tmp";
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7 local xmlns_delay = "urn:xmpp:delay";
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8 local xmlns_forward = "urn:xmpp:forward:0";
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9
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10 local st = require "util.stanza";
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11 local jid_bare = require "util.jid".bare;
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12 local jid_split = require "util.jid".split;
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13 local host = module.host;
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14 local host_sessions = hosts[host].sessions;
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15
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16 local dm_load = require "util.datamanager".load;
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17 local dm_store = require "util.datamanager".store;
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18 local dm_list_load = require "util.datamanager".list_load;
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19 local dm_list_append = require "util.datamanager".list_append;
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20 local rm_load_roster = require "core.rostermanager".load_roster;
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21
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22 local time_now = os.time;
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23 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse;
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24 local uuid = require "util.uuid".generate;
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25 local global_default_policy = module:get_option("default_archive_policy", false);
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26 -- TODO Should be possible to enforce it too
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27
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28 local default_attrs = {
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29 always = true, [true] = "always",
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30 never = false, [false] = "never",
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31 roster = "roster",
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32 }
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33
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34 do
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35 local prefs_format = {
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36 [false] = "roster",
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37 -- default ::= true | false | "roster"
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38 -- true = always, false = never, nil = global default
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39 ["romeo@montague.net"] = true, -- always
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40 ["montague@montague.net"] = false, -- newer
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41 };
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42 end
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43
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44 local prefs_store = "archive2_prefs";
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45 local function get_prefs(user)
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46 return dm_load(user, host, prefs_store) or
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47 { [false] = global_default_policy };
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48 end
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49 local function set_prefs(user, prefs)
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50 return dm_store(user, host, prefs_store, prefs);
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51 end
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52
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53
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54 -- Handle prefs.
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55 module:hook("iq/self/"..xmlns_mam..":prefs", function(event)
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56 local origin, stanza = event.origin, event.stanza;
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57 local user = origin.username;
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58 if stanza.attr.type == "get" then
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59 local prefs = get_prefs(user);
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60 local default = prefs[false];
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61 default = default ~= nil and default_attrs[default] or global_default_policy;
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62 local reply = st.reply(stanza):tag("prefs", { xmlns = xmlns_mam, default = default })
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63 --module:log("debug", "get_prefs(%q) => %s", user, require"util.serialization".serialize(prefs));
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64 local always = st.stanza("always");
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65 local never = st.stanza("never");
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66 for k,v in pairs(prefs) do
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67 if k then
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68 (v and always or never):tag("jid"):text(k):up();
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69 end
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70 end
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71 reply:add_child(always):add_child(never);
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72 origin.send(reply);
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73 return true
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74 else -- type == "set"
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75 local prefs = {};
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76 local new_prefs = stanza:get_child("prefs", xmlns_mam);
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77 local new_default = new_prefs.attr.default;
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78 if new_default then
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79 prefs[false] = default_attrs[new_default];
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80 end
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81
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82 local always = new_prefs:get_child("always");
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83 if always then
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84 for rule in always:childtags("jid") do
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85 local jid = rule:get_text();
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86 prefs[jid] = true;
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87 end
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88 end
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89
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90 local never = new_prefs:get_child("never");
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91 if never then
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92 for rule in never:childtags("jid") do
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93 local jid = rule:get_text();
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94 prefs[jid] = false;
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95 end
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96 end
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97
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98 --module:log("debug", "set_prefs(%q, %s)", user, require"util.serialization".serialize(prefs));
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99 local ok, err = set_prefs(user, prefs);
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100 if not ok then
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101 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err)));
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102 else
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103 origin.send(st.reply(stanza));
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104 end
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105 return true
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106 end
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107 end);
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108
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109 -- Handle archive queries
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110 module:hook("iq/self/"..xmlns_mam..":query", function(event)
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111 local origin, stanza = event.origin, event.stanza;
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112 local query = stanza.tags[1];
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113 if stanza.attr.type == "get" then
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114 local qid = query.attr.queryid;
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115
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116 -- Search query parameters
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117 local qwith = query:get_child_text("with");
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118 local qstart = query:get_child_text("start");
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119 local qend = query:get_child_text("end");
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120 module:log("debug", "Archive query, id %s with %s from %s until %s)",
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121 tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now");
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122
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123 qstart, qend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend))
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124
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125 -- Load all the data!
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126 local data, err = dm_list_load(origin.username, origin.host, "archive2");
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127 if not data then
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128 if (not err) then
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129 module:log("debug", "The archive was empty.");
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130 origin.send(st.reply(stanza));
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131 else
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132 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error loading archive: "..tostring(err)));
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133 end
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134 return true
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135 end
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136
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137 module:log("debug", "Loaded %d items, about to filter", #data);
523
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138 for i=1,#data do
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139 local item = data[i];
558
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140 local when, with, with_bare = item.when, item.with, item.with_bare;
523
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141 local ts = item.timestamp;
558
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142 --module:log("debug", "message with %s at %s", with, when or "???");
523
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143 -- Apply query filter
558
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144 if (not qwith or ((qwith == with) or (qwith == with_bare)))
523
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145 and (not qstart or when >= qstart)
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146 and (not qend or when <= qend) then
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147 -- Optimizable? Do this when archiving?
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148 --module:log("debug", "sending");
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149 local fwd_st = st.message{ to = origin.full_jid }
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150 :tag("result", { xmlns = xmlns_mam, queryid = qid }):up()
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151 :tag("forwarded", { xmlns = xmlns_forward })
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152 :tag("delay", { xmlns = xmlns_delay, stamp = ts or timestamp(when) }):up();
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153 local orig_stanza = st.deserialize(item.stanza);
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154 orig_stanza.attr.xmlns = "jabber:client";
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155 fwd_st:add_child(orig_stanza);
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156 origin.send(fwd_st);
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157 end
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158 end
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159 -- That's all folks!
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160 module:log("debug", "Archive query %s completed", tostring(qid));
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161 origin.send(st.reply(stanza));
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162 return true
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163 end
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164 end);
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165
558
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166 local function has_in_roster(user, who)
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167 local roster = rm_load_roster(user, host);
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168 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no");
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169 return roster and roster[who];
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170 end
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171
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172 local function shall_store(user, who)
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173 -- TODO Cache this?
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174 local prefs = get_prefs(user);
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175 local rule = prefs[who];
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176 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule))
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177 if rule ~= nil then
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178 return rule;
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179 else -- Below could be done by a metatable
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180 local default = prefs[false];
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181 module:log("debug", "%s's default rule is %s", user, tostring(default))
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182 if default == nil then
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183 default = global_default_policy;
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184 module:log("debug", "Using global default rule, %s", tostring(default))
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185 end
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186 if default == "roster" then
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187 return has_in_roster(user, who);
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188 end
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189 return default;
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190 end
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191 end
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192
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193 -- Handle messages
523
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194 local function message_handler(event, c2s)
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195 local origin, stanza = event.origin, event.stanza;
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196 local orig_type = stanza.attr.type or "normal";
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197 local orig_to = stanza.attr.to;
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198 local orig_from = stanza.attr.from;
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199
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200 if not orig_from and c2s then
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201 orig_from = origin.full_jid;
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202 end
619
cade7dac6159 mod_mam: Try to not bork when sending a message to your bare jid
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203 orig_to = orig_to or orig_from; -- Weird corner cases
523
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204
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205 -- Don't store messages of these types
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206 if orig_type == "error"
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Kim Alvefur <zash@zash.se>
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207 or orig_type == "headline"
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208 or orig_type == "groupchat" then
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209 return;
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210 -- TODO Maybe headlines should be configurable?
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211 -- TODO Write a mod_mam_muc for groupchat messages.
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212 end
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213
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214 local store_user, store_host = jid_split(c2s and orig_from or orig_to);
558
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215 local target_jid = c2s and orig_to or orig_from;
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216 local target_bare = jid_bare(target_jid);
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217
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218 assert(store_host == host, "This should not happen.");
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219
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220 if shall_store(store_user, target_bare) then
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221 module:log("debug", "Archiving stanza: %s", stanza:top_tag());
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222
559
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Kim Alvefur <zash@zash.se>
parents: 558
diff changeset
223 local id = uuid();
558
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224 local when = time_now();
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225 -- And stash it
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226 dm_list_append(store_user, store_host, "archive2", {
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227 -- WARNING This format may change.
559
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Kim Alvefur <zash@zash.se>
parents: 558
diff changeset
228 id = id,
558
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229 when = when, -- This might be an UNIX timestamp. Probably.
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230 timestamp = timestamp(when), -- Textual timestamp. But I'll assume that comparing numbers is faster and less annoying in case of timezones.
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parents: 523
diff changeset
231 with = target_jid,
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232 with_bare = target_bare, -- Optimization, to avoid loads of jid_bare() calls when filtering.
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diff changeset
233 stanza = st.preserialize(stanza)
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parents: 523
diff changeset
234 });
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diff changeset
235 else
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236 module:log("debug", "Not archiving stanza: %s", stanza:top_tag());
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parents: 523
diff changeset
237 end
523
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Kim Alvefur <zash@zash.se>
parents:
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238 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
239
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
240 local function c2s_message_handler(event)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
241 return message_handler(event, true);
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Kim Alvefur <zash@zash.se>
parents:
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242 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
243
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
244 -- Stanzas sent by local clients
621
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
245 module:hook("pre-message/bare", c2s_message_handler, 2);
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
246 module:hook("pre-message/full", c2s_message_handler, 2);
523
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
247 -- Stanszas to local clients
621
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Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
248 module:hook("message/bare", message_handler, 2);
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Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
249 module:hook("message/full", message_handler, 2);
523
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parents:
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250
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
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251 module:add_feature(xmlns_mam);
558
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
252