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plugins/mod_mam/mod_mam.lua @ 8931:ae84911c1441
MUC: Avoid sending error for unavailable presence in GC 1.0 check
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 26 Jun 2018 16:27:07 +0200 |
parent | 8905:65d1a80d3565 |
child | 9553:9a5485550bfd |
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 = require "util.datetime".datetime, require "util.datetime".parse; |
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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 archive.name == "null" or not archive.find then |
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44 if not archive.find then |
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45 module:log("debug", "Attempt to open archive storage returned a valid driver but it does not seem to implement the storage API"); |
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46 module:log("debug", "mod_%s does not support archiving", archive._provided_by or archive.name and "storage_"..archive.name.."(?)" or "<unknown>"); |
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47 else |
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48 module:log("debug", "Attempt to open archive storage returned null driver"); |
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49 end |
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50 module:log("debug", "See https://prosody.im/doc/storage and https://prosody.im/doc/archiving for more information"); |
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51 module:log("info", "Using in-memory fallback archive driver"); |
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52 archive = module:require "fallback_archive"; |
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53 end |
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54 |
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55 local use_total = module:get_option_boolean("mam_include_total", true); |
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56 |
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57 local cleanup; |
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58 |
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59 local function schedule_cleanup(username) |
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60 if cleanup and not cleanup[username] then |
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61 table.insert(cleanup, username); |
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62 cleanup[username] = true; |
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63 end |
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64 end |
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65 |
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66 -- Handle prefs. |
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67 module:hook("iq/self/"..xmlns_mam..":prefs", function(event) |
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68 local origin, stanza = event.origin, event.stanza; |
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69 local user = origin.username; |
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70 if stanza.attr.type == "set" then |
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71 local new_prefs = stanza:get_child("prefs", xmlns_mam); |
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72 local prefs = prefs_from_stanza(new_prefs); |
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73 local ok, err = set_prefs(user, prefs); |
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74 if not ok then |
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75 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err))); |
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76 return true; |
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77 end |
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78 end |
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79 local prefs = prefs_to_stanza(get_prefs(user, true)); |
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80 local reply = st.reply(stanza):add_child(prefs); |
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81 origin.send(reply); |
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82 return true; |
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83 end); |
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84 |
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85 local query_form = dataform { |
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86 { name = "FORM_TYPE"; type = "hidden"; value = xmlns_mam; }; |
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87 { name = "with"; type = "jid-single"; }; |
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88 { name = "start"; type = "text-single" }; |
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89 { name = "end"; type = "text-single"; }; |
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90 }; |
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91 |
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92 -- Serve form |
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93 module:hook("iq-get/self/"..xmlns_mam..":query", function(event) |
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94 local origin, stanza = event.origin, event.stanza; |
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95 get_prefs(origin.username, true); |
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96 origin.send(st.reply(stanza):query(xmlns_mam):add_child(query_form:form())); |
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97 return true; |
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98 end); |
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99 |
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100 -- Handle archive queries |
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101 module:hook("iq-set/self/"..xmlns_mam..":query", function(event) |
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102 local origin, stanza = event.origin, event.stanza; |
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103 local query = stanza.tags[1]; |
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104 local qid = query.attr.queryid; |
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105 |
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106 get_prefs(origin.username, true); |
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107 schedule_cleanup(origin.username); |
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108 |
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109 -- Search query parameters |
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110 local qwith, qstart, qend; |
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111 local form = query:get_child("x", "jabber:x:data"); |
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112 if form then |
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113 local err; |
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114 form, err = query_form:data(form); |
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115 if err then |
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116 origin.send(st.error_reply(stanza, "modify", "bad-request", select(2, next(err)))); |
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117 return true; |
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118 end |
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119 qwith, qstart, qend = form["with"], form["start"], form["end"]; |
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120 qwith = qwith and jid_bare(qwith); -- dataforms does jidprep |
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121 end |
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122 |
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123 if qstart or qend then -- Validate timestamps |
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124 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)); |
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125 if (qstart and not vstart) or (qend and not vend) then |
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126 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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127 return true; |
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128 end |
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129 qstart, qend = vstart, vend; |
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130 end |
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131 |
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132 module:log("debug", "Archive query, id %s with %s from %s until %s", |
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133 tostring(qid), qwith or "anyone", |
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134 qstart and timestamp(qstart) or "the dawn of time", |
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135 qend and timestamp(qend) or "now"); |
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136 |
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137 -- RSM stuff |
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138 local qset = rsm.get(query); |
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139 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
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140 local reverse = qset and qset.before or false; |
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141 local before, after = qset and qset.before, qset and qset.after; |
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142 if type(before) ~= "string" then before = nil; end |
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143 |
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144 -- Load all the data! |
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145 local data, err = archive:find(origin.username, { |
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146 start = qstart; ["end"] = qend; -- Time range |
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147 with = qwith; |
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148 limit = qmax == 0 and 0 or qmax + 1; |
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149 before = before; after = after; |
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150 reverse = reverse; |
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151 total = use_total or qmax == 0; |
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152 }); |
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153 |
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154 if not data then |
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155 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", err)); |
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156 return true; |
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157 end |
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158 local total = tonumber(err); |
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159 |
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160 local msg_reply_attr = { to = stanza.attr.from, from = stanza.attr.to }; |
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161 |
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162 local results = {}; |
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163 |
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164 -- Wrap it in stuff and deliver |
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165 local first, last; |
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166 local count = 0; |
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167 local complete = "true"; |
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168 for id, item, when in data do |
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169 count = count + 1; |
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170 if count > qmax then |
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171 -- We requested qmax+1 items. If that many items are retrieved then |
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172 -- there are more results to page through, so: |
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173 complete = nil; |
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174 break; |
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175 end |
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176 local fwd_st = st.message(msg_reply_attr) |
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177 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) |
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178 :tag("forwarded", { xmlns = xmlns_forward }) |
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179 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); |
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180 |
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181 if not is_stanza(item) then |
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182 item = st.deserialize(item); |
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183 end |
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184 item.attr.xmlns = "jabber:client"; |
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185 fwd_st:add_child(item); |
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186 |
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187 if not first then first = id; end |
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188 last = id; |
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189 |
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190 if reverse then |
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191 results[count] = fwd_st; |
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192 else |
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193 origin.send(fwd_st); |
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194 end |
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195 end |
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196 |
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197 if reverse then |
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198 for i = #results, 1, -1 do |
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199 origin.send(results[i]); |
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|
200 end |
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201 first, last = last, first; |
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202 end |
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|
203 |
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204 -- That's all folks! |
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205 module:log("debug", "Archive query %s completed", tostring(qid)); |
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|
206 |
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207 origin.send(st.reply(stanza) |
7836
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208 :tag("fin", { xmlns = xmlns_mam, queryid = qid, complete = complete }) |
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209 :add_child(rsm.generate { |
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210 first = first, last = last, count = total })); |
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211 return true; |
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|
212 end); |
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|
213 |
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214 local function has_in_roster(user, who) |
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215 local roster = rm_load_roster(user, host); |
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216 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no"); |
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217 return roster[who]; |
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|
218 end |
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|
219 |
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|
220 local function shall_store(user, who) |
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|
221 -- TODO Cache this? |
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|
222 if not um.user_exists(user, host) then |
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|
223 return false; |
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|
224 end |
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|
225 local prefs = get_prefs(user); |
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|
226 local rule = prefs[who]; |
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|
227 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule)); |
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|
228 if rule ~= nil then |
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|
229 return rule; |
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|
230 end |
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231 -- Below could be done by a metatable |
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|
232 local default = prefs[false]; |
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|
233 module:log("debug", "%s's default rule is %s", user, tostring(default)); |
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234 if default == "roster" then |
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235 return has_in_roster(user, who); |
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|
236 end |
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|
237 return default; |
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238 end |
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|
239 |
8207
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|
240 local function strip_stanza_id(stanza, user) |
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mod_mam: Factor out <stanza-id> stripping so it can be reused in two places
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|
241 if stanza:get_child("stanza-id", xmlns_st_id) then |
8ea0484871e8
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|
242 stanza = st.clone(stanza); |
8ea0484871e8
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|
243 stanza:maptags(function (tag) |
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8206
diff
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244 if tag.name == "stanza-id" and tag.attr.xmlns == xmlns_st_id then |
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245 local by_user, by_host, res = jid_prepped_split(tag.attr.by); |
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246 if not res and by_host == host and by_user == user then |
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247 return nil; |
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248 end |
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249 end |
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250 return tag; |
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251 end); |
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252 end |
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253 return stanza; |
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254 end |
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255 |
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256 -- Handle messages |
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257 local function message_handler(event, c2s) |
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258 local origin, stanza = event.origin, event.stanza; |
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259 local log = c2s and origin.log or module._log; |
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260 local orig_type = stanza.attr.type or "normal"; |
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261 local orig_from = stanza.attr.from; |
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262 local orig_to = stanza.attr.to or orig_from; |
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263 -- Stanza without 'to' are treated as if it was to their own bare jid |
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264 |
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265 -- Whos storage do we put it in? |
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266 local store_user = c2s and origin.username or jid_split(orig_to); |
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267 -- And who are they chatting with? |
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268 local with = jid_bare(c2s and orig_to or orig_from); |
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269 |
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270 -- Filter out <stanza-id> that claim to be from us |
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271 event.stanza = strip_stanza_id(stanza, store_user); |
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272 |
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273 -- We store chat messages or normal messages that have a body |
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274 if not(orig_type == "chat" or (orig_type == "normal" and stanza:get_child("body")) ) then |
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275 log("debug", "Not archiving stanza: %s (type)", stanza:top_tag()); |
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276 return; |
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277 end |
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278 |
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279 -- or if hints suggest we shouldn't |
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280 if not stanza:get_child("store", "urn:xmpp:hints") then -- No hint telling us we should store |
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281 if stanza:get_child("no-permanent-store", "urn:xmpp:hints") |
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282 or stanza:get_child("no-store", "urn:xmpp:hints") then -- Hint telling us we should NOT store |
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283 log("debug", "Not archiving stanza: %s (hint)", stanza:top_tag()); |
04b09fd144eb
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284 return; |
04b09fd144eb
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|
285 end |
7836
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|
286 end |
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|
287 |
8193
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288 local clone_for_storage; |
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289 if not strip_tags:empty() then |
8193
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290 clone_for_storage = st.clone(stanza); |
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291 clone_for_storage:maptags(function (tag) |
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292 if strip_tags:contains(tag.attr.xmlns) then |
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293 return nil; |
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294 else |
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295 return tag; |
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296 end |
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297 end); |
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298 if #clone_for_storage.tags == 0 then |
8250
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8231
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|
299 log("debug", "Not archiving stanza: %s (empty when stripped)", stanza:top_tag()); |
7849
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300 return; |
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301 end |
8193
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302 else |
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|
303 clone_for_storage = stanza; |
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304 end |
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305 |
7836
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306 -- Check with the users preferences |
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|
307 if shall_store(store_user, with) then |
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308 log("debug", "Archiving stanza: %s", stanza:top_tag()); |
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|
309 |
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310 -- And stash it |
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311 local ok = archive:append(store_user, nil, clone_for_storage, time_now(), with); |
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312 if ok then |
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|
313 local clone_for_other_handlers = st.clone(stanza); |
7908
dbdaa8487ecd
mod_mam: Fix to treat first return value from archive:append as assigned ID
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7906
diff
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|
314 local id = ok; |
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315 clone_for_other_handlers:tag("stanza-id", { xmlns = xmlns_st_id, by = store_user.."@"..host, id = id }):up(); |
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|
316 event.stanza = clone_for_other_handlers; |
8230
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mod_mam: Use a FIFO queue for scheduling archive expiry
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|
317 schedule_cleanup(store_user); |
8193
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|
318 module:fire_event("archive-message-added", { origin = origin, stanza = clone_for_storage, for_user = store_user, id = id }); |
7836
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319 end |
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|
320 else |
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|
321 log("debug", "Not archiving stanza: %s (prefs)", stanza:top_tag()); |
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|
322 end |
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|
323 end |
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|
324 |
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|
325 local function c2s_message_handler(event) |
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|
326 return message_handler(event, true); |
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|
327 end |
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|
328 |
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329 -- Filter out <stanza-id> before the message leaves the server to prevent privacy leak. |
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|
330 local function strip_stanza_id_after_other_events(event) |
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|
331 event.stanza = strip_stanza_id(event.stanza, event.origin.username); |
7902
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
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7901
diff
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|
332 end |
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
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7901
diff
changeset
|
333 |
8207
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|
334 module:hook("pre-message/bare", strip_stanza_id_after_other_events, -1); |
8ea0484871e8
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|
335 module:hook("pre-message/full", strip_stanza_id_after_other_events, -1); |
7902
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mod_mam: Strip stanza-id tags after carbons
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parents:
7901
diff
changeset
|
336 |
7836
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diff
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|
337 local cleanup_after = module:get_option_string("archive_expires_after", "1w"); |
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|
338 local cleanup_interval = module:get_option_number("archive_cleanup_interval", 4 * 60 * 60); |
8575
5040c8ce32dd
Backed out changeset 97a094fdf101, interferes with 6ddddfe05a74
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parents:
8538
diff
changeset
|
339 if cleanup_after ~= "never" then |
7836
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|
340 local day = 86400; |
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|
341 local multipliers = { d = day, w = day * 7, m = 31 * day, y = 365.2425 * day }; |
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|
342 local n, m = cleanup_after:lower():match("(%d+)%s*([dwmy]?)"); |
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|
343 if not n then |
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|
344 module:log("error", "Could not parse archive_expires_after string %q", cleanup_after); |
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|
345 return false; |
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|
346 end |
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|
347 |
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|
348 cleanup_after = tonumber(n) * ( multipliers[m] or 1 ); |
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|
349 |
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|
350 module:log("debug", "archive_expires_after = %d -- in seconds", cleanup_after); |
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changeset
|
351 |
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
352 if not archive.delete then |
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changeset
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353 module:log("error", "archive_expires_after set but mod_%s does not support deleting", archive._provided_by); |
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354 return false; |
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355 end |
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356 |
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357 -- Set of known users to do message expiry for |
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358 -- Populated either below or when new messages are added |
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359 cleanup = {}; |
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360 |
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361 -- Iterating over users is not supported by all authentication modules |
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362 -- Catch and ignore error if not supported |
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363 pcall(function () |
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364 -- If this works, then we schedule cleanup for all known users on startup |
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365 for user in um.users(module.host) do |
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366 schedule_cleanup(user); |
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367 end |
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368 end); |
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369 |
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370 -- At odd intervals, delete old messages for one user |
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371 module:add_timer(math.random(10, 60), function() |
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372 local user = table.remove(cleanup, 1); |
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373 if user then |
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374 module:log("debug", "Removing old messages for user %q", user); |
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375 local ok, err = archive:delete(user, { ["end"] = os.time() - cleanup_after; }) |
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376 if not ok then |
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377 module:log("warn", "Could not expire archives for user %s: %s", user, err); |
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378 elseif type(ok) == "number" then |
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379 module:log("debug", "Removed %d messages", ok); |
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380 end |
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381 cleanup[user] = nil; |
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382 end |
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383 return math.random(cleanup_interval, cleanup_interval * 2); |
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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); |
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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 |