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820
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1 -- XEP-0313: Message Archive Management for Prosody
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2 -- Copyright (C) 2011-2012 Kim Alvefur
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3 --
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4 -- This file is MIT/X11 licensed.
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5
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6 local xmlns_mam = "urn:xmpp:mam:tmp";
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7 local xmlns_delay = "urn:xmpp:delay";
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8 local xmlns_forward = "urn:xmpp:forward:0";
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9
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10 local st = require "util.stanza";
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11 local rsm = module:require "mod_mam/rsm";
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12 local jid_bare = require "util.jid".bare;
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13 local jid_split = require "util.jid".split;
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14 local jid_prep = require "util.jid".prep;
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15 local host = module.host;
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16
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17 local dm_list_load = require "util.datamanager".list_load;
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18 local dm_list_append = require "util.datamanager".list_append;
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19
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20 local tostring = tostring;
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21 local time_now = os.time;
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22 local m_min = math.min;
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23 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse;
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24 local uuid = require "util.uuid".generate;
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25 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50);
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26 --local rooms_to_archive = module:get_option_set("rooms_to_archive",{});
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27 -- TODO Should be possible to enforce it too
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28
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29 local archive_store = "archive2";
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30
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31 -- Handle archive queries
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32 module:hook("iq/bare/"..xmlns_mam..":query", function(event)
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33 local origin, stanza = event.origin, event.stanza;
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34 local room = jid_split(stanza.attr.to);
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35 local query = stanza.tags[1];
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36
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37 local room_obj = hosts[module.host].modules.muc.rooms[jid_bare(stanza.attr.to)];
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38 if not room_obj then
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39 return -- FIXME not found
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40 end
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41 local from = jid_bare(stanza.attr.from);
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42
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43 if room_obj._affiliations[from] == "outcast"
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44 or room_obj._data.members_only and not room_obj._affiliations[from] then
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45 return -- FIXME unauth
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46 end
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47
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48 if stanza.attr.type == "get" then
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49 local qid = query.attr.queryid;
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50
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51 -- Search query parameters
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52 local qwith = query:get_child_text("with");
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53 local qstart = query:get_child_text("start");
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54 local qend = query:get_child_text("end");
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55 local qset = rsm.get(query);
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56 module:log("debug", "Archive query, id %s with %s from %s until %s)",
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57 tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now");
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58
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59 if qstart or qend then -- Validate timestamps
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60 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend))
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61 if (qstart and not vstart) or (qend and not vend) then
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62 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp"))
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63 return true
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64 end
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65 qstart, qend = vstart, vend;
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66 end
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67
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68 local qres;
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69 if qwith then -- Validate the 'with' jid
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70 local pwith = qwith and jid_prep(qwith);
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71 if pwith and not qwith then -- it failed prepping
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72 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID"))
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73 return true
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74 end
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75 local _, _, resource = jid_split(qwith);
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76 qwith = jid_bare(pwith);
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77 qres = resource;
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78 end
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79
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80 -- Load all the data!
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81 local data, err = dm_list_load(room, module.host, archive_store);
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82 if not data then
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83 if (not err) then
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84 module:log("debug", "The archive was empty.");
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85 origin.send(st.reply(stanza));
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86 else
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87 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error loading archive: "..tostring(err)));
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88 end
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89 return true
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90 end
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91
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92 -- RSM stuff
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93 local qmax = m_min(qset and qset.max or default_max_items, max_max_items);
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94 local qset_matches = not (qset and qset.after);
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95 local first, last, index;
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96 local n = 0;
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97 local start = qset and qset.index or 1;
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98
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99 module:log("debug", "Loaded %d items, about to filter", #data);
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100 for i=start,#data do
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101 local item = data[i];
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102 local when, nick = item.when, item.resource;
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103 local id = item.id;
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104 --module:log("debug", "id is %s", id);
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105
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106 -- RSM pre-send-checking
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107 if qset then
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108 if qset.before == id then
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109 module:log("debug", "End of matching range found");
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110 qset_matches = false;
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111 break;
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112 end
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113 end
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114
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115 --module:log("debug", "message with %s at %s", with, when or "???");
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116 -- Apply query filter
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117 if (not qres or (qres == nick))
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118 and (not qstart or when >= qstart)
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119 and (not qend or when <= qend)
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120 and (not qset or qset_matches) then
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121 local fwd_st = st.message{ to = stanza.attr.from }
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122 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }):up()
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123 :tag("forwarded", { xmlns = xmlns_forward })
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124 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up();
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125 local orig_stanza = st.deserialize(item.stanza);
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126 orig_stanza.attr.xmlns = "jabber:client";
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127 fwd_st:add_child(orig_stanza);
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128 origin.send(fwd_st);
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129 if not first then
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130 index = i;
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131 first = id;
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132 end
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133 last = id;
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134 n = n + 1;
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135 elseif (qend and when > qend) then
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136 module:log("debug", "We have passed into messages more recent than requested");
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137 break -- We have passed into messages more recent than requested
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138 end
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139
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140 -- RSM post-send-checking
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141 if qset then
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142 if qset.after == id then
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143 module:log("debug", "Start of matching range found");
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144 qset_matches = true;
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145 end
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146 end
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147 if n >= qmax then
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148 module:log("debug", "Max number of items matched");
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149 break
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150 end
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151 end
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152 -- That's all folks!
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153 module:log("debug", "Archive query %s completed", tostring(qid));
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154
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155 local reply = st.reply(stanza);
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156 if last then
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157 -- This is a bit redundant, isn't it?
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158 reply:query(xmlns_mam):add_child(rsm.generate{first = first, last = last, count = n});
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159 end
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160 origin.send(reply);
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161 return true
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162 end
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163 end);
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164
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165 -- Handle messages
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166 local function message_handler(event)
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167 local origin, stanza = event.origin, event.stanza;
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168 local orig_type = stanza.attr.type or "normal";
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169 local orig_to = stanza.attr.to;
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170 local orig_from = stanza.attr.from;
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171
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172 -- Still needed?
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173 if not orig_from then
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174 orig_from = origin.full_jid;
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175 end
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176
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177 -- Only store groupchat messages
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178 if not (orig_type == "groupchat" and (stanza:get_child("body") or stanza:get_child("subject"))) then
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179 return;
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180 end
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181
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182 local room = jid_split(orig_to);
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183 local room_obj = hosts[host].modules.muc.rooms[orig_to]
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184 if not room_obj then return end
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185
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186 local id = uuid();
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187 local when = time_now();
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188 local stanza = st.clone(stanza); -- Private copy
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189 --stanza.attr.to = nil;
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190 local nick = room_obj._jid_nick[orig_from];
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191 if not nick then return end
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192 stanza.attr.from = nick;
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193 local _, _, nick = jid_split(nick);
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194 -- And stash it
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195 local ok, err = dm_list_append(room, host, archive_store, {
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196 -- WARNING This format may change.
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197 id = id,
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198 when = when,
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199 resource = nick,
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200 stanza = st.preserialize(stanza)
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201 });
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202 --[[ This was dropped from the spec
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203 if ok then
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204 stanza:tag("archived", { xmlns = xmlns_mam, by = host, id = id }):up();
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205 end
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206 --]]
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207 end
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208
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209 module:hook("message/bare", message_handler, 2);
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210
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211 module:add_feature(xmlns_mam);
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