Software / code / prosody-modules
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mod_mam_muc/mod_mam_muc.lua @ 1547:e98c335c6554
mod_mam_muc: Limit search to groupchat messages (we use the internal 'with' field stanza types)
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sat, 08 Nov 2014 15:46:47 +0100 |
| parent | 1546:fff2858c554f |
| child | 1548:d3c847070618 |
| rev | line source |
|---|---|
| 1313 | 1 -- XEP-0313: Message Archive Management for Prosody MUC |
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2 -- Copyright (C) 2011-2014 Kim Alvefur |
| 820 | 3 -- |
| 4 -- This file is MIT/X11 licensed. | |
| 5 | |
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6 local xmlns_mam = "urn:xmpp:mam:0"; |
| 820 | 7 local xmlns_delay = "urn:xmpp:delay"; |
| 8 local xmlns_forward = "urn:xmpp:forward:0"; | |
| 1313 | 9 local muc_form_enable_logging = "muc#roomconfig_enablelogging" |
| 820 | 10 |
| 11 local st = require "util.stanza"; | |
| 12 local rsm = module:require "mod_mam/rsm"; | |
| 13 local jid_bare = require "util.jid".bare; | |
| 14 local jid_split = require "util.jid".split; | |
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15 local dataform = require "util.dataforms".new; |
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16 |
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17 local mod_muc = module:depends"muc"; |
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18 local room_mt = mod_muc.room_mt; |
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19 local rooms = rawget(mod_muc, "rooms"); |
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20 local new_muc = not rooms; |
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21 if new_muc then |
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22 rooms = module:shared"muc/rooms"; |
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23 end |
| 820 | 24 |
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25 local getmetatable = getmetatable; |
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26 local function is_stanza(x) |
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27 return getmetatable(x) == st.stanza_mt; |
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28 end |
| 820 | 29 |
| 30 local tostring = tostring; | |
| 31 local time_now = os.time; | |
| 32 local m_min = math.min; | |
| 33 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse; | |
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34 local max_history_length = module:get_option_number("max_history_messages", 1000); |
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35 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", max_history_length); |
| 820 | 36 |
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37 local log_all_rooms = module:get_option_boolean("muc_log_all_rooms", false); |
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38 local log_by_default = module:get_option_boolean("muc_log_by_default", true); |
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39 |
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40 local archive_store = "archive2"; |
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41 local archive = module:open_store(archive_store, "archive"); |
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42 if not archive or archive.name == "null" then |
| 1541 | 43 module:log("error", "Could not open archive storage"); |
| 44 return | |
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45 elseif not archive.find then |
| 1541 | 46 module:log("error", "mod_%s does not support archiving, switch to mod_storage_sql2", archive._provided_by); |
| 47 return | |
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48 end |
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49 |
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50 local function logging_enabled(room) |
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51 if log_all_rooms then |
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52 return true; |
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53 end |
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54 local enabled = room._data.logging; |
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55 if enabled == nil then |
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56 return log_by_default; |
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57 end |
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58 return enabled; |
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59 end |
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60 |
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61 local send_history, save_to_history; |
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62 |
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63 -- Override history methods for all rooms. |
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64 if not new_muc then -- 0.10 or older |
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65 module:hook("muc-room-created", function (event) |
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66 local room = event.room; |
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67 if logging_enabled(room) then |
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68 room.send_history = send_history; |
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69 room.save_to_history = save_to_history; |
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70 end |
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71 end); |
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72 |
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73 function module.load() |
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74 for _, room in pairs(rooms) do |
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75 if logging_enabled(room) then |
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76 room.send_history = send_history; |
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77 room.save_to_history = save_to_history; |
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78 end |
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79 end |
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80 end |
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81 function module.unload() |
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82 for _, room in pairs(rooms) do |
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83 if room.send_history == send_history then |
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84 room.send_history = nil; |
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85 room.save_to_history = nil; |
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86 end |
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87 end |
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88 end |
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89 end |
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90 |
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91 if not log_all_rooms then |
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92 module:hook("muc-config-form", function(event) |
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93 local room, form = event.room, event.form; |
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94 table.insert(form, |
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95 { |
| 1313 | 96 name = muc_form_enable_logging, |
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97 type = "boolean", |
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98 label = "Enable Logging?", |
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99 value = logging_enabled(room), |
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100 } |
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101 ); |
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102 end); |
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103 |
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104 module:hook("muc-config-submitted", function(event) |
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105 local room, fields, changed = event.room, event.fields, event.changed; |
| 1313 | 106 local new = fields[muc_form_enable_logging]; |
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107 if new ~= room._data.logging then |
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108 room._data.logging = new; |
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109 if type(changed) == "table" then |
| 1313 | 110 changed[muc_form_enable_logging] = true; |
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111 else |
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112 event.changed = true; |
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113 end |
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114 if new then |
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115 room.send_history = send_history; |
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116 room.save_to_history = save_to_history; |
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117 else |
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118 room.send_history = nil; |
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119 room.save_to_history = nil; |
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120 end |
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121 end |
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122 end); |
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123 end |
|
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124 |
|
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125 -- Note: We ignore the 'with' field as this is internally used for stanza types |
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126 local query_form = dataform { |
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127 { name = "FORM_TYPE"; type = "hidden"; value = xmlns_mam; }; |
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128 { name = "with"; type = "jid-single"; }; |
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129 { name = "start"; type = "text-single" }; |
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130 { name = "end"; type = "text-single"; }; |
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131 }; |
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132 |
|
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133 -- Serve form |
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134 module:hook("iq-get/self/"..xmlns_mam..":query", function(event) |
|
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135 local origin, stanza = event.origin, event.stanza; |
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136 return origin.send(st.reply(stanza):add_child(query_form:form())); |
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137 end); |
|
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138 |
| 820 | 139 -- Handle archive queries |
|
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140 module:hook("iq-set/bare/"..xmlns_mam..":query", function(event) |
| 820 | 141 local origin, stanza = event.origin, event.stanza; |
|
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142 local room = stanza.attr.to; |
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143 local room_node = jid_split(room); |
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144 local orig_from = stanza.attr.from; |
| 820 | 145 local query = stanza.tags[1]; |
| 146 | |
|
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147 local room_obj = rooms[room]; |
| 820 | 148 if not room_obj then |
|
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149 return origin.send(st.error_reply(stanza, "cancel", "item-not-found")) |
| 820 | 150 end |
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151 local from = jid_bare(orig_from); |
| 820 | 152 |
|
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153 -- Banned or not a member of a members-only room? |
|
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154 local from_affiliation = room_obj:get_affiliation(from); |
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155 if from_affiliation == "outcast" -- banned |
|
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156 or room_obj:get_members_only() and not from_affiliation then -- members-only, not a member |
|
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157 return origin.send(st.error_reply(stanza, "auth", "forbidden")) |
| 820 | 158 end |
| 159 | |
|
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|
160 local qid = query.attr.queryid; |
|
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|
161 |
|
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162 -- Search query parameters |
|
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163 local qstart, qend; |
|
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164 local form = query:get_child("x", "jabber:x:data"); |
|
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165 if form then |
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166 local err; |
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167 form, err = query_form:data(form); |
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168 if err then |
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169 return origin.send(st.error_reply(stanza, "modify", "bad-request", select(2, next(err)))) |
|
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170 end |
|
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171 qstart, qend = form["start"], form["end"]; |
|
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172 end |
| 820 | 173 |
|
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174 if qstart or qend then -- Validate timestamps |
|
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175 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)) |
|
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176 if (qstart and not vstart) or (qend and not vend) then |
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177 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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178 return true |
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|
179 end |
|
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180 qstart, qend = vstart, vend; |
|
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|
181 end |
| 820 | 182 |
|
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183 -- RSM stuff |
|
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|
184 local qset = rsm.get(query); |
|
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185 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
|
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186 local reverse = qset and qset.before or false; |
|
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187 |
|
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188 local before, after = qset and qset.before, qset and qset.after; |
|
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189 if type(before) ~= "string" then before = nil; end |
| 820 | 190 |
|
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|
191 -- Load all the data! |
|
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|
192 local data, err = archive:find(room_node, { |
|
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193 start = qstart; ["end"] = qend; -- Time range |
|
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|
194 limit = qmax; |
|
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195 before = before; after = after; |
|
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196 reverse = reverse; |
|
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|
197 total = true; |
|
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|
198 with = "message<groupchat"; |
|
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199 }); |
|
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|
200 |
|
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201 if not data then |
|
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|
202 return origin.send(st.error_reply(stanza, "cancel", "internal-server-error")); |
|
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|
203 end |
|
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|
204 local count = err; |
|
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|
205 |
|
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|
206 origin.send(st.reply(stanza)) |
|
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|
207 local msg_reply_attr = { to = stanza.attr.from, from = stanza.attr.to }; |
|
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|
208 |
|
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209 -- Wrap it in stuff and deliver |
|
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|
210 local fwd_st, first, last; |
|
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|
211 for id, item, when in data do |
|
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|
212 fwd_st = st.message(msg_reply_attr) |
|
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213 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) |
|
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|
214 :tag("forwarded", { xmlns = xmlns_forward }) |
|
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|
215 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); |
|
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216 |
|
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217 if not is_stanza(item) then |
|
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|
218 item = st.deserialize(item); |
|
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|
219 end |
|
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220 item.attr.xmlns = "jabber:client"; |
|
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221 fwd_st:add_child(item); |
| 820 | 222 |
|
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223 if not first then first = id; end |
|
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224 last = id; |
|
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225 |
|
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226 origin.send(fwd_st); |
|
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|
227 end |
|
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228 -- That's all folks! |
|
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|
229 module:log("debug", "Archive query %s completed", tostring(qid)); |
| 820 | 230 |
|
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231 if reverse then first, last = last, first; end |
|
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232 return origin.send(st.message(msg_reply_attr) |
|
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233 :tag("fin", { xmlns = xmlns_mam, queryid = qid }) |
|
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234 :add_child(rsm.generate { |
|
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|
235 first = first, last = last, count = count })); |
| 820 | 236 end); |
| 237 | |
|
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238 module:hook("muc-get-history", function (event) |
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239 local room = event.room; |
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240 if not logging_enabled(room) then return end |
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241 local room_jid = room.jid; |
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242 local maxstanzas = event.maxstanzas; |
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243 local maxchars = event.maxchars; |
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244 local since = event.since; |
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245 local to = event.to; |
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246 |
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247 -- Load all the data! |
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248 local query = { |
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249 limit = m_min(maxstanzas or 20, max_history_length); |
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250 start = since; |
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251 reverse = true; |
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252 with = "message<groupchat"; |
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253 } |
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254 module:log("debug", require"util.serialization".serialize(query)) |
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255 local data, err = archive:find(jid_split(room_jid), query); |
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256 |
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257 if not data then |
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258 module:log("error", "Could not fetch history: %s", tostring(err)); |
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259 return |
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260 end |
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261 |
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262 local chars = 0; |
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263 local history, i = {}, 1; |
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264 |
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265 for id, item, when in data do |
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266 item.attr.to = to; |
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267 item:tag("delay", { xmlns = "urn:xmpp:delay", from = room_jid, stamp = timestamp(when) }):up(); -- XEP-0203 |
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268 if maxchars then |
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269 chars = #tostring(item); |
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270 if chars + charcount > maxchars then |
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271 break |
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272 end |
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273 charcount = charcount + chars; |
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274 end |
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275 history[i], i = item, i+1; |
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276 -- module:log("debug", tostring(item)); |
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277 end |
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278 function event:next_stanza() |
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279 i = i - 1; |
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280 return history[i]; |
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281 end |
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282 return true; |
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283 end, 1); |
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284 |
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285 function send_history(self, to, stanza) |
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286 local maxchars, maxstanzas, seconds, since; |
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287 local history_tag = stanza:find("{http://jabber.org/protocol/muc}x/history") |
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288 if history_tag then |
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289 module:log("debug", tostring(history_tag)); |
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290 local history_attr = history_tag.attr; |
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291 maxchars = tonumber(history_attr.maxchars); |
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292 maxstanzas = tonumber(history_attr.maxstanzas); |
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293 seconds = tonumber(history_attr.seconds); |
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294 since = history_attr.since; |
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295 if since then |
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296 since = timestamp_parse(since); |
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297 end |
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298 if seconds then |
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299 since = math.max(os.time() - seconds, since or 0); |
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300 end |
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301 end |
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302 |
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303 local event = { |
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304 room = self; |
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305 to = to; -- `to` is required to calculate the character count for `maxchars` |
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306 maxchars = maxchars, maxstanzas = maxstanzas, since = since; |
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307 next_stanza = function() end; -- events should define this iterator |
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308 }; |
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309 |
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310 module:fire_event("muc-get-history", event); |
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311 |
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312 for msg in event.next_stanza, event do |
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313 self:_route_stanza(msg); |
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314 end |
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315 end |
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316 |
| 820 | 317 -- Handle messages |
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318 function save_to_history(self, stanza) |
| 820 | 319 local orig_to = stanza.attr.to; |
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320 local room = jid_split(self.jid); |
| 820 | 321 |
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322 -- Policy check |
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323 if not logging_enabled(self) then return end -- Don't log |
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324 |
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325 module:log("debug", "We're logging this") |
| 820 | 326 -- And stash it |
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327 local with = stanza.name |
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328 if stanza.attr.type then |
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329 with = with .. "<" .. stanza.attr.type |
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330 end |
|
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331 archive:append(room, nil, time_now(), with, stanza); |
| 820 | 332 end |
| 333 | |
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334 module:hook("muc-broadcast-message", function (event) |
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335 local room, stanza = event.room, event.stanza; |
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336 if stanza:get_child("body") then |
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337 save_to_history(room, stanza); |
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338 end |
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339 end); |
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340 |
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341 module:hook("muc-room-destroyed", function(event) |
|
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342 local username = jid_split(event.room.jid); |
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343 archive:delete(username); |
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344 end); |
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345 |
|
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346 -- TODO should we perhaps log presence as well? |
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347 -- And role/affiliation changes? |
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348 |
| 820 | 349 module:add_feature(xmlns_mam); |
