Software / code / prosody
Annotate
plugins/mod_mam/mod_mam.lua @ 12181:783056b4e448 0.11 0.11.12
util.xml: Do not allow doctypes, comments or processing instructions
Yes. This is as bad as it sounds. CVE pending.
In Prosody itself, this only affects mod_websocket, which uses util.xml
to parse the <open/> frame, thus allowing unauthenticated remote DoS
using Billion Laughs. However, third-party modules using util.xml may
also be affected by this.
This commit installs handlers which disallow the use of doctype
declarations and processing instructions without any escape hatch. It,
by default, also introduces such a handler for comments, however, there
is a way to enable comments nontheless.
This is because util.xml is used to parse human-facing data, where
comments are generally a desirable feature, and also because comments
are generally harmless.
| author | Jonas Schäfer <jonas@wielicki.name> |
|---|---|
| date | Mon, 10 Jan 2022 18:23:54 +0100 |
| parent | 10682:62ef68f95b6f |
| child | 10683:2f0b7f1d5e75 |
| 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 origin.mam_requested = true; |
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94 |
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95 get_prefs(origin.username, true); |
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96 |
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97 -- Search query parameters |
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98 local qwith, qstart, qend; |
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99 local form = query:get_child("x", "jabber:x:data"); |
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100 if form then |
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101 local err; |
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102 form, err = query_form:data(form); |
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103 if err then |
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104 origin.send(st.error_reply(stanza, "modify", "bad-request", select(2, next(err)))); |
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105 return true; |
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106 end |
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107 qwith, qstart, qend = form["with"], form["start"], form["end"]; |
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108 qwith = qwith and jid_bare(qwith); -- dataforms does jidprep |
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109 end |
|
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110 |
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111 if qstart or qend then -- Validate timestamps |
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112 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)); |
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113 if (qstart and not vstart) or (qend and not vend) then |
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114 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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115 return true; |
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116 end |
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117 qstart, qend = vstart, vend; |
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118 end |
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119 |
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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", |
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122 qstart and timestamp(qstart) or "the dawn of time", |
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123 qend and timestamp(qend) or "now"); |
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124 |
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125 -- RSM stuff |
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126 local qset = rsm.get(query); |
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127 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
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128 local reverse = qset and qset.before or false; |
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129 local before, after = qset and qset.before, qset and qset.after; |
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130 if type(before) ~= "string" then before = nil; end |
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131 |
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132 -- Load all the data! |
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133 local data, err = archive:find(origin.username, { |
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134 start = qstart; ["end"] = qend; -- Time range |
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135 with = qwith; |
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136 limit = qmax == 0 and 0 or qmax + 1; |
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137 before = before; after = after; |
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138 reverse = reverse; |
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139 total = use_total or qmax == 0; |
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140 }); |
|
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141 |
|
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142 if not data then |
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143 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", err)); |
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144 return true; |
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145 end |
|
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146 local total = tonumber(err); |
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147 |
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148 local msg_reply_attr = { to = stanza.attr.from, from = stanza.attr.to }; |
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149 |
|
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150 local results = {}; |
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151 |
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152 -- Wrap it in stuff and deliver |
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153 local first, last; |
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154 local count = 0; |
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155 local complete = "true"; |
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156 for id, item, when in data do |
|
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157 count = count + 1; |
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158 if count > qmax then |
|
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65d1a80d3565
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159 -- We requested qmax+1 items. If that many items are retrieved then |
|
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160 -- there are more results to page through, so: |
|
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161 complete = nil; |
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162 break; |
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163 end |
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164 local fwd_st = st.message(msg_reply_attr) |
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165 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) |
|
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166 :tag("forwarded", { xmlns = xmlns_forward }) |
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167 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); |
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168 |
|
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169 if not is_stanza(item) then |
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170 item = st.deserialize(item); |
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171 end |
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172 item.attr.xmlns = "jabber:client"; |
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173 fwd_st:add_child(item); |
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174 |
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175 if not first then first = id; end |
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176 last = id; |
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|
177 |
|
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|
178 if reverse then |
|
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|
179 results[count] = fwd_st; |
|
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|
180 else |
|
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|
181 origin.send(fwd_st); |
|
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182 end |
|
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183 end |
|
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|
184 |
|
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|
185 if reverse then |
|
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|
186 for i = #results, 1, -1 do |
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187 origin.send(results[i]); |
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188 end |
|
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189 first, last = last, first; |
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190 end |
|
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|
191 |
|
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|
192 -- That's all folks! |
|
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|
193 module:log("debug", "Archive query %s completed", tostring(qid)); |
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194 |
|
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mod_mam: Update to XEP-0313 v0.5.1
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|
195 origin.send(st.reply(stanza) |
|
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196 :tag("fin", { xmlns = xmlns_mam, queryid = qid, complete = complete }) |
|
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197 :add_child(rsm.generate { |
|
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198 first = first, last = last, count = total })); |
|
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|
199 return true; |
|
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|
200 end); |
|
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|
201 |
|
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|
202 local function has_in_roster(user, who) |
|
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|
203 local roster = rm_load_roster(user, host); |
|
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|
204 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no"); |
|
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205 return roster[who]; |
|
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|
206 end |
|
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|
207 |
|
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|
208 local function shall_store(user, who) |
|
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|
209 -- TODO Cache this? |
|
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|
210 if not um.user_exists(user, host) then |
|
9879
ddc07fb8dcd4
mod_mam: Perform message expiry based on building an index by date (backport of 39ee70fbb009 from trunk)
Kim Alvefur <zash@zash.se>
parents:
9555
diff
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|
211 module:log("debug", "%s@%s does not exist", user, host) |
|
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|
212 return false; |
|
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|
213 end |
|
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|
214 local prefs = get_prefs(user); |
|
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|
215 local rule = prefs[who]; |
|
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|
216 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule)); |
|
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|
217 if rule ~= nil then |
|
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|
218 return rule; |
|
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|
219 end |
|
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220 -- Below could be done by a metatable |
|
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|
221 local default = prefs[false]; |
|
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|
222 module:log("debug", "%s's default rule is %s", user, tostring(default)); |
|
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|
223 if default == "roster" then |
|
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|
224 return has_in_roster(user, who); |
|
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|
225 end |
|
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|
226 return default; |
|
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|
227 end |
|
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|
228 |
|
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
|
229 local function strip_stanza_id(stanza, user) |
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230 if stanza:get_child("stanza-id", xmlns_st_id) then |
|
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231 stanza = st.clone(stanza); |
|
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232 stanza:maptags(function (tag) |
|
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233 if tag.name == "stanza-id" and tag.attr.xmlns == xmlns_st_id then |
|
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234 local by_user, by_host, res = jid_prepped_split(tag.attr.by); |
|
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235 if not res and by_host == host and by_user == user then |
|
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236 return nil; |
|
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237 end |
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238 end |
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239 return tag; |
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240 end); |
|
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241 end |
|
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|
242 return stanza; |
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243 end |
|
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|
244 |
|
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245 -- Handle messages |
|
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246 local function message_handler(event, c2s) |
|
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247 local origin, stanza = event.origin, event.stanza; |
|
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248 local log = c2s and origin.log or module._log; |
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249 local orig_type = stanza.attr.type or "normal"; |
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250 local orig_from = stanza.attr.from; |
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251 local orig_to = stanza.attr.to or orig_from; |
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252 -- Stanza without 'to' are treated as if it was to their own bare jid |
|
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253 |
|
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254 -- Whos storage do we put it in? |
|
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255 local store_user = c2s and origin.username or jid_split(orig_to); |
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256 -- And who are they chatting with? |
|
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257 local with = jid_bare(c2s and orig_to or orig_from); |
|
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258 |
|
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259 -- Filter out <stanza-id> that claim to be from us |
|
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260 event.stanza = strip_stanza_id(stanza, store_user); |
|
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261 |
|
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262 -- We store chat messages or normal messages that have a body |
|
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263 if not(orig_type == "chat" or (orig_type == "normal" and stanza:get_child("body")) ) then |
|
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264 log("debug", "Not archiving stanza: %s (type)", stanza:top_tag()); |
|
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265 return; |
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266 end |
|
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mod_mam: Add some comments explaining archive expiry
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|
267 |
|
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268 -- or if hints suggest we shouldn't |
|
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269 if not stanza:get_child("store", "urn:xmpp:hints") then -- No hint telling us we should store |
|
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270 if stanza:get_child("no-permanent-store", "urn:xmpp:hints") |
|
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|
271 or stanza:get_child("no-store", "urn:xmpp:hints") then -- Hint telling us we should NOT store |
|
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|
272 log("debug", "Not archiving stanza: %s (hint)", stanza:top_tag()); |
|
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|
273 return; |
|
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parents:
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diff
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|
274 end |
|
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|
275 end |
|
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276 |
|
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|
277 local clone_for_storage; |
|
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278 if not strip_tags:empty() then |
|
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279 clone_for_storage = st.clone(stanza); |
|
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|
280 clone_for_storage:maptags(function (tag) |
|
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|
281 if strip_tags:contains(tag.attr.xmlns) then |
|
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|
282 return nil; |
|
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|
283 else |
|
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|
284 return tag; |
|
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|
285 end |
|
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|
286 end); |
|
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changeset
|
287 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>
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8231
diff
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|
288 log("debug", "Not archiving stanza: %s (empty when stripped)", stanza:top_tag()); |
|
7849
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|
289 return; |
|
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diff
changeset
|
290 end |
|
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|
291 else |
|
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parents:
8172
diff
changeset
|
292 clone_for_storage = stanza; |
|
7849
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changeset
|
293 end |
|
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|
294 |
|
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|
295 -- Check with the users preferences |
|
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|
296 if shall_store(store_user, with) then |
|
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|
297 log("debug", "Archiving stanza: %s", stanza:top_tag()); |
|
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|
298 |
|
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299 -- And stash it |
|
10567
3df479098696
mod_mam: Fix rebase mistake [luacheck]
Kim Alvefur <zash@zash.se>
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10525
diff
changeset
|
300 local ok, err = archive:append(store_user, nil, clone_for_storage, time_now(), with); |
|
7836
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|
301 if ok then |
|
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diff
changeset
|
302 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
|
303 local id = ok; |
|
8193
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parents:
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diff
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|
304 clone_for_other_handlers:tag("stanza-id", { xmlns = xmlns_st_id, by = store_user.."@"..host, id = id }):up(); |
|
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8172
diff
changeset
|
305 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
|
306 schedule_cleanup(store_user); |
|
8193
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mod_mam: Clone stanzas before mutating (thanks waqas) (fixes #961)
Kim Alvefur <zash@zash.se>
parents:
8172
diff
changeset
|
307 module:fire_event("archive-message-added", { origin = origin, stanza = clone_for_storage, for_user = store_user, id = id }); |
|
10523
86422db90e02
mod_mam: Log error when unable to store stanza (fix #1478)
Kim Alvefur <zash@zash.se>
parents:
10298
diff
changeset
|
308 else |
|
86422db90e02
mod_mam: Log error when unable to store stanza (fix #1478)
Kim Alvefur <zash@zash.se>
parents:
10298
diff
changeset
|
309 log("error", "Could not archive stanza: %s", err); |
|
7836
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diff
changeset
|
310 end |
|
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parents:
diff
changeset
|
311 else |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
312 log("debug", "Not archiving stanza: %s (prefs)", stanza:top_tag()); |
|
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parents:
diff
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|
313 end |
|
30fac9154fd4
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
314 end |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
315 |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
316 local function c2s_message_handler(event) |
|
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diff
changeset
|
317 return message_handler(event, true); |
|
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diff
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|
318 end |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
319 |
|
8207
8ea0484871e8
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parents:
8206
diff
changeset
|
320 -- 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:
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diff
changeset
|
321 local function strip_stanza_id_after_other_events(event) |
|
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 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
|
323 end |
|
92b70a921acb
mod_mam: Strip stanza-id tags after carbons
Kim Alvefur <zash@zash.se>
parents:
7901
diff
changeset
|
324 |
|
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
|
325 module:hook("pre-message/bare", strip_stanza_id_after_other_events, -1); |
|
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Kim Alvefur <zash@zash.se>
parents:
8206
diff
changeset
|
326 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
|
327 |
|
7836
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
328 local cleanup_after = module:get_option_string("archive_expires_after", "1w"); |
|
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
329 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
|
330 if cleanup_after ~= "never" then |
|
9879
ddc07fb8dcd4
mod_mam: Perform message expiry based on building an index by date (backport of 39ee70fbb009 from trunk)
Kim Alvefur <zash@zash.se>
parents:
9555
diff
changeset
|
331 local cleanup_storage = module:open_store("archive_cleanup"); |
|
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332 local cleanup_map = module:open_store("archive_cleanup", "map"); |
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333 |
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334 local day = 86400; |
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335 local multipliers = { d = day, w = day * 7, m = 31 * day, y = 365.2425 * day }; |
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336 local n, m = cleanup_after:lower():match("(%d+)%s*([dwmy]?)"); |
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337 if not n then |
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338 module:log("error", "Could not parse archive_expires_after string %q", cleanup_after); |
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339 return false; |
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340 end |
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341 |
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342 cleanup_after = tonumber(n) * ( multipliers[m] or 1 ); |
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343 |
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344 module:log("debug", "archive_expires_after = %d -- in seconds", cleanup_after); |
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345 |
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346 if not archive.delete then |
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347 module:log("error", "archive_expires_after set but mod_%s does not support deleting", archive._provided_by); |
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348 return false; |
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349 end |
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350 |
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351 -- For each day, store a set of users that have new messages. To expire |
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352 -- messages, we collect the union of sets of users from dates that fall |
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353 -- outside the cleanup range. |
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354 |
|
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355 local last_date = require "util.cache".new(module:get_option_number("archive_cleanup_date_cache_size", 1000)); |
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356 function schedule_cleanup(username, date) |
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357 date = date or datestamp(); |
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358 if last_date:get(username) == date then return end |
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359 local ok = cleanup_map:set(date, username, true); |
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360 if ok then |
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361 last_date:set(username, date); |
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362 end |
|
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363 end |
|
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364 |
|
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365 local async = require "util.async"; |
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366 cleanup_runner = async.runner(function () |
|
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367 local users = {}; |
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368 local cut_off = datestamp(os.time() - cleanup_after); |
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369 for date in cleanup_storage:users() do |
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370 if date <= cut_off then |
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371 module:log("debug", "Messages from %q should be expired", date); |
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372 local messages_this_day = cleanup_storage:get(date); |
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373 if messages_this_day then |
|
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374 for user in pairs(messages_this_day) do |
|
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375 users[user] = true; |
|
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376 end |
|
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377 if date < cut_off then |
|
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378 -- Messages from the same day as the cut-off might not have expired yet, |
|
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379 -- but all earlier will have, so clear storage for those days. |
|
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380 cleanup_storage:set(date, nil); |
|
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381 end |
|
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382 end |
|
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383 end |
|
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|
384 end |
|
9879
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|
385 local sum, num_users = 0, 0; |
|
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|
386 for user in pairs(users) do |
|
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387 local ok, err = archive:delete(user, { ["end"] = os.time() - cleanup_after; }) |
|
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388 if ok then |
|
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389 num_users = num_users + 1; |
|
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|
390 sum = sum + (tonumber(ok) or 0); |
|
10524
7c29a6e652d2
mod_mam: Log error when unable to delete old messages (fix #1479) [luacheck]
Kim Alvefur <zash@zash.se>
parents:
10523
diff
changeset
|
391 else |
|
10525
9cf7d9761ca2
mod_mam: Schedule cleanup again if unable to delete messages
Kim Alvefur <zash@zash.se>
parents:
10524
diff
changeset
|
392 cleanup_map:set(cut_off, user, true); |
|
10524
7c29a6e652d2
mod_mam: Log error when unable to delete old messages (fix #1479) [luacheck]
Kim Alvefur <zash@zash.se>
parents:
10523
diff
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|
393 module:log("error", "Could not delete messages for user '%s': %s", user, err); |
|
9879
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|
394 end |
|
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|
395 local wait, done = async.waiter(); |
|
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|
396 module:add_timer(0.01, done); |
|
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|
397 wait(); |
|
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398 end |
|
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|
399 module:log("info", "Deleted %d expired messages for %d users", sum, num_users); |
|
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|
400 end); |
|
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|
401 |
|
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|
402 cleanup_task = module:add_timer(1, function () |
|
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|
403 cleanup_runner:run(true); |
|
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|
404 return cleanup_interval; |
|
7836
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|
405 end); |
|
8132
6ddddfe05a74
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Kim Alvefur <zash@zash.se>
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diff
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|
406 else |
|
8576
07ff7b8b702b
mod_mam: Log a debug message if archive expiry has been disabled
Kim Alvefur <zash@zash.se>
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8575
diff
changeset
|
407 module:log("debug", "Archive expiry disabled"); |
|
8132
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diff
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|
408 -- Don't ask the backend to count the potentially unbounded number of items, |
|
6ddddfe05a74
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|
409 -- it'll get slow. |
|
8577
75d5eee6fcdf
mod_mam: Add an option for whether to include 'total' counts by default in queries
Kim Alvefur <zash@zash.se>
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diff
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|
410 use_total = module:get_option_boolean("mam_include_total", false); |
|
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|
411 end |
|
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|
412 |
|
30fac9154fd4
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diff
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|
413 -- Stanzas sent by local clients |
|
7840
92b6aa3ea2ce
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7839
diff
changeset
|
414 module:hook("pre-message/bare", c2s_message_handler, 0); |
|
92b6aa3ea2ce
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diff
changeset
|
415 module:hook("pre-message/full", c2s_message_handler, 0); |
| 7905 | 416 -- Stanzas to local clients |
|
7840
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|
417 module:hook("message/bare", message_handler, 0); |
|
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|
418 module:hook("message/full", message_handler, 0); |
|
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|
419 |
|
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|
420 module:hook("account-disco-info", function(event) |
|
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|
421 (event.reply or event.stanza):tag("feature", {var=xmlns_mam}):up(); |
|
7891
01d2a2af3146
mod_mam: Advertise Stanza ID support (XEP-0359) (thanks iNPUTmice)
Kim Alvefur <zash@zash.se>
parents:
7890
diff
changeset
|
422 (event.reply or event.stanza):tag("feature", {var=xmlns_st_id}):up(); |
|
7836
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|
423 end); |
|
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|
424 |
