Software / code / prosody
Annotate
plugins/mod_mam/mod_mam.lua @ 9751:39ee70fbb009
mod_mam: Perform message expiry based on building an index by date
For each day, store a set of users that have new messages. To expire
messages, we collect the union of sets of users from dates that fall
outside the cleanup range.
The previous algoritm did not work well with many users, especially with
the default settings.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Thu, 03 Jan 2019 17:25:43 +0100 |
| parent | 9555:ed5a5ddcef17 |
| child | 9752:5cc2765c3ce4 |
| rev | line source |
|---|---|
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2017 Matthew Wild |
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3 -- Copyright (C) 2008-2017 Waqas Hussain |
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4 -- Copyright (C) 2011-2017 Kim Alvefur |
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5 -- |
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6 -- This project is MIT/X11 licensed. Please see the |
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7 -- COPYING file in the source package for more information. |
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8 -- |
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9 -- XEP-0313: Message Archive Management for Prosody |
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10 -- |
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11 |
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12 local xmlns_mam = "urn:xmpp:mam:2"; |
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13 local xmlns_delay = "urn:xmpp:delay"; |
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14 local xmlns_forward = "urn:xmpp:forward:0"; |
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15 local xmlns_st_id = "urn:xmpp:sid:0"; |
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16 |
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17 local um = require "core.usermanager"; |
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18 local st = require "util.stanza"; |
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19 local rsm = require "util.rsm"; |
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20 local get_prefs = module:require"mamprefs".get; |
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21 local set_prefs = module:require"mamprefs".set; |
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22 local prefs_to_stanza = module:require"mamprefsxml".tostanza; |
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23 local prefs_from_stanza = module:require"mamprefsxml".fromstanza; |
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24 local jid_bare = require "util.jid".bare; |
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25 local jid_split = require "util.jid".split; |
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26 local jid_prepped_split = require "util.jid".prepped_split; |
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27 local dataform = require "util.dataforms".new; |
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28 local host = module.host; |
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29 |
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30 local rm_load_roster = require "core.rostermanager".load_roster; |
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31 |
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32 local is_stanza = st.is_stanza; |
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33 local tostring = tostring; |
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34 local time_now = os.time; |
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35 local m_min = math.min; |
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36 local timestamp, timestamp_parse, datestamp = import( "util.datetime", "datetime", "parse", "date"); |
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37 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50); |
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38 local strip_tags = module:get_option_set("dont_archive_namespaces", { "http://jabber.org/protocol/chatstates" }); |
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39 |
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40 local archive_store = module:get_option_string("archive_store", "archive"); |
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41 local archive = module:open_store(archive_store, "archive"); |
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42 |
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43 if not archive.find then |
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44 error("mod_"..(archive._provided_by or archive.name and "storage_"..archive.name).." does not support archiving\n" |
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45 .."See https://prosody.im/doc/storage and https://prosody.im/doc/archiving for more information"); |
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46 end |
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47 local use_total = module:get_option_boolean("mam_include_total", true); |
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48 |
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49 function schedule_cleanup() |
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50 -- replaced by non-noop later if cleanup is enabled |
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51 end |
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52 |
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53 -- Handle prefs. |
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54 module:hook("iq/self/"..xmlns_mam..":prefs", function(event) |
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55 local origin, stanza = event.origin, event.stanza; |
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56 local user = origin.username; |
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57 if stanza.attr.type == "set" then |
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58 local new_prefs = stanza:get_child("prefs", xmlns_mam); |
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59 local prefs = prefs_from_stanza(new_prefs); |
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60 local ok, err = set_prefs(user, prefs); |
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61 if not ok then |
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62 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err))); |
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63 return true; |
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64 end |
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65 end |
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66 local prefs = prefs_to_stanza(get_prefs(user, true)); |
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67 local reply = st.reply(stanza):add_child(prefs); |
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68 origin.send(reply); |
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69 return true; |
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70 end); |
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71 |
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72 local query_form = dataform { |
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73 { name = "FORM_TYPE"; type = "hidden"; value = xmlns_mam; }; |
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74 { name = "with"; type = "jid-single"; }; |
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75 { name = "start"; type = "text-single" }; |
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76 { name = "end"; type = "text-single"; }; |
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77 }; |
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78 |
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79 -- Serve form |
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80 module:hook("iq-get/self/"..xmlns_mam..":query", function(event) |
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81 local origin, stanza = event.origin, event.stanza; |
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82 get_prefs(origin.username, true); |
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83 origin.send(st.reply(stanza):query(xmlns_mam):add_child(query_form:form())); |
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84 return true; |
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85 end); |
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86 |
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87 -- Handle archive queries |
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88 module:hook("iq-set/self/"..xmlns_mam..":query", function(event) |
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89 local origin, stanza = event.origin, event.stanza; |
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90 local query = stanza.tags[1]; |
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91 local qid = query.attr.queryid; |
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92 |
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93 get_prefs(origin.username, true); |
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94 |
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95 -- Search query parameters |
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96 local qwith, qstart, qend; |
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97 local form = query:get_child("x", "jabber:x:data"); |
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98 if form then |
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99 local err; |
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100 form, err = query_form:data(form); |
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101 if err then |
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102 origin.send(st.error_reply(stanza, "modify", "bad-request", select(2, next(err)))); |
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103 return true; |
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104 end |
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105 qwith, qstart, qend = form["with"], form["start"], form["end"]; |
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106 qwith = qwith and jid_bare(qwith); -- dataforms does jidprep |
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107 end |
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108 |
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109 if qstart or qend then -- Validate timestamps |
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110 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)); |
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111 if (qstart and not vstart) or (qend and not vend) then |
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112 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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113 return true; |
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114 end |
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115 qstart, qend = vstart, vend; |
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116 end |
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117 |
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118 module:log("debug", "Archive query, id %s with %s from %s until %s", |
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119 tostring(qid), qwith or "anyone", |
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120 qstart and timestamp(qstart) or "the dawn of time", |
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121 qend and timestamp(qend) or "now"); |
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122 |
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123 -- RSM stuff |
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124 local qset = rsm.get(query); |
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125 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
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126 local reverse = qset and qset.before or false; |
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127 local before, after = qset and qset.before, qset and qset.after; |
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128 if type(before) ~= "string" then before = nil; end |
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129 |
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130 -- Load all the data! |
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131 local data, err = archive:find(origin.username, { |
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132 start = qstart; ["end"] = qend; -- Time range |
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133 with = qwith; |
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134 limit = qmax == 0 and 0 or qmax + 1; |
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135 before = before; after = after; |
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136 reverse = reverse; |
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137 total = use_total or qmax == 0; |
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138 }); |
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139 |
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140 if not data then |
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141 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", err)); |
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142 return true; |
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143 end |
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144 local total = tonumber(err); |
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145 |
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146 local msg_reply_attr = { to = stanza.attr.from, from = stanza.attr.to }; |
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147 |
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148 local results = {}; |
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149 |
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150 -- Wrap it in stuff and deliver |
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151 local first, last; |
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152 local count = 0; |
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153 local complete = "true"; |
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154 for id, item, when in data do |
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155 count = count + 1; |
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156 if count > qmax then |
|
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157 -- We requested qmax+1 items. If that many items are retrieved then |
|
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158 -- there are more results to page through, so: |
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159 complete = nil; |
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160 break; |
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161 end |
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162 local fwd_st = st.message(msg_reply_attr) |
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163 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) |
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164 :tag("forwarded", { xmlns = xmlns_forward }) |
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165 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); |
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166 |
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167 if not is_stanza(item) then |
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168 item = st.deserialize(item); |
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169 end |
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170 item.attr.xmlns = "jabber:client"; |
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171 fwd_st:add_child(item); |
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172 |
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173 if not first then first = id; end |
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174 last = id; |
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175 |
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176 if reverse then |
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177 results[count] = fwd_st; |
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178 else |
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179 origin.send(fwd_st); |
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180 end |
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181 end |
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182 |
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183 if reverse then |
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184 for i = #results, 1, -1 do |
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185 origin.send(results[i]); |
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186 end |
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187 first, last = last, first; |
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188 end |
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189 |
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190 -- That's all folks! |
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191 module:log("debug", "Archive query %s completed", tostring(qid)); |
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192 |
|
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193 origin.send(st.reply(stanza) |
|
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194 :tag("fin", { xmlns = xmlns_mam, queryid = qid, complete = complete }) |
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195 :add_child(rsm.generate { |
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196 first = first, last = last, count = total })); |
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197 return true; |
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198 end); |
|
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|
199 |
|
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200 local function has_in_roster(user, who) |
|
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201 local roster = rm_load_roster(user, host); |
|
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202 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no"); |
|
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203 return roster[who]; |
|
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204 end |
|
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205 |
|
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|
206 local function shall_store(user, who) |
|
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|
207 -- TODO Cache this? |
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|
208 if not um.user_exists(user, host) then |
|
9751
39ee70fbb009
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9555
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209 module:log("debug", "%s@%s does not exist", user, host) |
|
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210 return false; |
|
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211 end |
|
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|
212 local prefs = get_prefs(user); |
|
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|
213 local rule = prefs[who]; |
|
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|
214 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule)); |
|
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|
215 if rule ~= nil then |
|
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|
216 return rule; |
|
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|
217 end |
|
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218 -- Below could be done by a metatable |
|
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219 local default = prefs[false]; |
|
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220 module:log("debug", "%s's default rule is %s", user, tostring(default)); |
|
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|
221 if default == "roster" then |
|
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|
222 return has_in_roster(user, who); |
|
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|
223 end |
|
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|
224 return default; |
|
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225 end |
|
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|
226 |
|
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|
227 local function strip_stanza_id(stanza, user) |
|
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228 if stanza:get_child("stanza-id", xmlns_st_id) then |
|
8ea0484871e8
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diff
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|
229 stanza = st.clone(stanza); |
|
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8206
diff
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|
230 stanza:maptags(function (tag) |
|
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Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
231 if tag.name == "stanza-id" and tag.attr.xmlns == xmlns_st_id then |
|
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|
232 local by_user, by_host, res = jid_prepped_split(tag.attr.by); |
|
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233 if not res and by_host == host and by_user == user then |
|
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|
234 return nil; |
|
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|
235 end |
|
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|
236 end |
|
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|
237 return tag; |
|
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|
238 end); |
|
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|
239 end |
|
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|
240 return stanza; |
|
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|
241 end |
|
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|
242 |
|
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|
243 -- Handle messages |
|
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|
244 local function message_handler(event, c2s) |
|
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245 local origin, stanza = event.origin, event.stanza; |
|
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246 local log = c2s and origin.log or module._log; |
|
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247 local orig_type = stanza.attr.type or "normal"; |
|
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248 local orig_from = stanza.attr.from; |
|
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249 local orig_to = stanza.attr.to or orig_from; |
|
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250 -- Stanza without 'to' are treated as if it was to their own bare jid |
|
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251 |
|
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252 -- Whos storage do we put it in? |
|
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253 local store_user = c2s and origin.username or jid_split(orig_to); |
|
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254 -- And who are they chatting with? |
|
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|
255 local with = jid_bare(c2s and orig_to or orig_from); |
|
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|
256 |
|
7845
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mod_mam: Filter out spoofed XEP-0359 tags
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257 -- Filter out <stanza-id> that claim to be from us |
|
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258 event.stanza = strip_stanza_id(stanza, store_user); |
|
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|
259 |
|
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260 -- We store chat messages or normal messages that have a body |
|
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261 if not(orig_type == "chat" or (orig_type == "normal" and stanza:get_child("body")) ) then |
|
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|
262 log("debug", "Not archiving stanza: %s (type)", stanza:top_tag()); |
|
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263 return; |
|
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|
264 end |
|
7842
9332b43931f5
mod_mam: Add some comments explaining archive expiry
Kim Alvefur <zash@zash.se>
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diff
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|
265 |
|
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266 -- or if hints suggest we shouldn't |
|
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267 if not stanza:get_child("store", "urn:xmpp:hints") then -- No hint telling us we should store |
|
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|
268 if stanza:get_child("no-permanent-store", "urn:xmpp:hints") |
|
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diff
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|
269 or stanza:get_child("no-store", "urn:xmpp:hints") then -- Hint telling us we should NOT store |
|
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parents:
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diff
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|
270 log("debug", "Not archiving stanza: %s (hint)", stanza:top_tag()); |
|
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diff
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|
271 return; |
|
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parents:
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diff
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|
272 end |
|
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|
273 end |
|
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|
274 |
|
8193
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|
275 local clone_for_storage; |
|
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mod_mam: Allow a set of namespaces to be stripped from stored stanzas, default to chat states (fixes #763)
Kim Alvefur <zash@zash.se>
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|
276 if not strip_tags:empty() then |
|
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277 clone_for_storage = st.clone(stanza); |
|
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diff
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|
278 clone_for_storage:maptags(function (tag) |
|
7849
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|
279 if strip_tags:contains(tag.attr.xmlns) then |
|
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|
280 return nil; |
|
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|
281 else |
|
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|
282 return tag; |
|
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parents:
7848
diff
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|
283 end |
|
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|
284 end); |
|
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
285 if #clone_for_storage.tags == 0 then |
|
8250
9ea5ea53744b
mod_mam: Log a message when not archiving because it only had ignored tags
Kim Alvefur <zash@zash.se>
parents:
8231
diff
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|
286 log("debug", "Not archiving stanza: %s (empty when stripped)", stanza:top_tag()); |
|
7849
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mod_mam: Allow a set of namespaces to be stripped from stored stanzas, default to chat states (fixes #763)
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parents:
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diff
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|
287 return; |
|
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Kim Alvefur <zash@zash.se>
parents:
7848
diff
changeset
|
288 end |
|
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diff
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|
289 else |
|
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parents:
8172
diff
changeset
|
290 clone_for_storage = stanza; |
|
7849
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mod_mam: Allow a set of namespaces to be stripped from stored stanzas, default to chat states (fixes #763)
Kim Alvefur <zash@zash.se>
parents:
7848
diff
changeset
|
291 end |
|
93a068ef4b2c
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parents:
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diff
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|
292 |
|
7836
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diff
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|
293 -- Check with the users preferences |
|
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|
294 if shall_store(store_user, with) then |
|
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diff
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|
295 log("debug", "Archiving stanza: %s", stanza:top_tag()); |
|
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|
296 |
|
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297 -- And stash it |
|
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|
298 local ok = archive:append(store_user, nil, clone_for_storage, time_now(), with); |
|
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|
299 if ok then |
|
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
300 local clone_for_other_handlers = st.clone(stanza); |
|
7908
dbdaa8487ecd
mod_mam: Fix to treat first return value from archive:append as assigned ID
Kim Alvefur <zash@zash.se>
parents:
7906
diff
changeset
|
301 local id = ok; |
|
8193
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mod_mam: Clone stanzas before mutating (thanks waqas) (fixes #961)
Kim Alvefur <zash@zash.se>
parents:
8172
diff
changeset
|
302 clone_for_other_handlers:tag("stanza-id", { xmlns = xmlns_st_id, by = store_user.."@"..host, id = id }):up(); |
|
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mod_mam: Clone stanzas before mutating (thanks waqas) (fixes #961)
Kim Alvefur <zash@zash.se>
parents:
8172
diff
changeset
|
303 event.stanza = clone_for_other_handlers; |
|
8230
154852646095
mod_mam: Use a FIFO queue for scheduling archive expiry
Kim Alvefur <zash@zash.se>
parents:
8207
diff
changeset
|
304 schedule_cleanup(store_user); |
|
8193
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mod_mam: Clone stanzas before mutating (thanks waqas) (fixes #961)
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parents:
8172
diff
changeset
|
305 module:fire_event("archive-message-added", { origin = origin, stanza = clone_for_storage, for_user = store_user, id = id }); |
|
7836
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diff
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|
306 end |
|
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parents:
diff
changeset
|
307 else |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
308 log("debug", "Not archiving stanza: %s (prefs)", stanza:top_tag()); |
|
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parents:
diff
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|
309 end |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
310 end |
|
30fac9154fd4
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
311 |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
312 local function c2s_message_handler(event) |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
313 return message_handler(event, true); |
|
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parents:
diff
changeset
|
314 end |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
315 |
|
8207
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mod_mam: Factor out <stanza-id> stripping so it can be reused in two places
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parents:
8206
diff
changeset
|
316 -- Filter out <stanza-id> before the message leaves the server to prevent privacy leak. |
|
8ea0484871e8
mod_mam: Factor out <stanza-id> stripping so it can be reused in two places
Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
317 local function strip_stanza_id_after_other_events(event) |
|
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Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
318 event.stanza = strip_stanza_id(event.stanza, event.origin.username); |
|
7902
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
Kim Alvefur <zash@zash.se>
parents:
7901
diff
changeset
|
319 end |
|
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
Kim Alvefur <zash@zash.se>
parents:
7901
diff
changeset
|
320 |
|
8207
8ea0484871e8
mod_mam: Factor out <stanza-id> stripping so it can be reused in two places
Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
321 module:hook("pre-message/bare", strip_stanza_id_after_other_events, -1); |
|
8ea0484871e8
mod_mam: Factor out <stanza-id> stripping so it can be reused in two places
Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
322 module:hook("pre-message/full", strip_stanza_id_after_other_events, -1); |
|
7902
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
Kim Alvefur <zash@zash.se>
parents:
7901
diff
changeset
|
323 |
|
7836
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
324 local cleanup_after = module:get_option_string("archive_expires_after", "1w"); |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
325 local cleanup_interval = module:get_option_number("archive_cleanup_interval", 4 * 60 * 60); |
|
8575
5040c8ce32dd
Backed out changeset 97a094fdf101, interferes with 6ddddfe05a74
Kim Alvefur <zash@zash.se>
parents:
8538
diff
changeset
|
326 if cleanup_after ~= "never" then |
|
9751
39ee70fbb009
mod_mam: Perform message expiry based on building an index by date
Kim Alvefur <zash@zash.se>
parents:
9555
diff
changeset
|
327 local cleanup_storage = module:open_store("archive_cleanup"); |
|
39ee70fbb009
mod_mam: Perform message expiry based on building an index by date
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
328 local cleanup_map = module:open_store("archive_cleanup", "map"); |
|
39ee70fbb009
mod_mam: Perform message expiry based on building an index by date
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parents:
9555
diff
changeset
|
329 |
|
7836
30fac9154fd4
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
330 local day = 86400; |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
331 local multipliers = { d = day, w = day * 7, m = 31 * day, y = 365.2425 * day }; |
|
30fac9154fd4
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
332 local n, m = cleanup_after:lower():match("(%d+)%s*([dwmy]?)"); |
|
30fac9154fd4
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
333 if not n then |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
334 module:log("error", "Could not parse archive_expires_after string %q", cleanup_after); |
|
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335 return false; |
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336 end |
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337 |
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338 cleanup_after = tonumber(n) * ( multipliers[m] or 1 ); |
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339 |
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340 module:log("debug", "archive_expires_after = %d -- in seconds", cleanup_after); |
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341 |
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342 if not archive.delete then |
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343 module:log("error", "archive_expires_after set but mod_%s does not support deleting", archive._provided_by); |
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344 return false; |
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345 end |
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346 |
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347 -- For each day, store a set of users that have new messages. To expire |
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348 -- messages, we collect the union of sets of users from dates that fall |
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349 -- outside the cleanup range. |
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350 |
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351 function schedule_cleanup(username, date) |
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352 cleanup_map:set(date or datestamp(), username, true); |
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353 end |
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354 |
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355 cleanup_runner = require "util.async".runner(function () |
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356 local users = {}; |
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357 local cut_off = datestamp(os.time() - cleanup_after); |
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358 for date in cleanup_storage:users() do |
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359 if date < cut_off then |
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360 module:log("debug", "Messages from %q should be expired", date); |
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361 local messages_this_day = cleanup_storage:get(date); |
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362 if messages_this_day then |
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363 for user in pairs(messages_this_day) do |
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364 users[user] = true; |
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365 end |
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366 cleanup_storage:set(date, nil); |
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367 end |
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368 end |
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369 end |
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370 local sum, num_users = 0, 0; |
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371 for user in pairs(users) do |
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372 local ok, err = archive:delete(user, { ["end"] = os.time() - cleanup_after; }) |
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373 if ok then |
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374 num_users = num_users + 1; |
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375 sum = sum + tonumber(ok) or 0; |
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376 end |
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377 end |
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378 module:log("info", "Deleted expired %d messages for %d users", sum, num_users); |
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379 end); |
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380 |
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381 cleanup_task = module:add_timer(1, function () |
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382 cleanup_runner:run(true); |
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383 return cleanup_interval; |
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384 end); |
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385 else |
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386 module:log("debug", "Archive expiry disabled"); |
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387 -- Don't ask the backend to count the potentially unbounded number of items, |
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388 -- it'll get slow. |
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389 use_total = module:get_option_boolean("mam_include_total", false); |
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390 end |
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391 |
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392 -- Stanzas sent by local clients |
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393 module:hook("pre-message/bare", c2s_message_handler, 0); |
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394 module:hook("pre-message/full", c2s_message_handler, 0); |
| 7905 | 395 -- Stanzas to local clients |
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396 module:hook("message/bare", message_handler, 0); |
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397 module:hook("message/full", message_handler, 0); |
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398 |
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399 module:hook("account-disco-info", function(event) |
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400 (event.reply or event.stanza):tag("feature", {var=xmlns_mam}):up(); |
|
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401 (event.reply or event.stanza):tag("feature", {var=xmlns_st_id}):up(); |
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402 end); |
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403 |
