Mercurial > prosody-modules
annotate mod_mam_muc/mod_mam_muc.lua @ 1140:402cb9b604eb
mod_mam_muc: Send proper error reply when one is not allowed to query archive
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sat, 10 Aug 2013 21:10:03 +0200 |
| parents | b32d65e41755 |
| children | 1091be1c3aba |
| rev | line source |
|---|---|
| 820 | 1 -- XEP-0313: Message Archive Management for Prosody |
| 2 -- Copyright (C) 2011-2012 Kim Alvefur | |
| 3 -- | |
| 4 -- This file is MIT/X11 licensed. | |
| 5 | |
| 6 local xmlns_mam = "urn:xmpp:mam:tmp"; | |
| 7 local xmlns_delay = "urn:xmpp:delay"; | |
| 8 local xmlns_forward = "urn:xmpp:forward:0"; | |
| 9 | |
| 10 local st = require "util.stanza"; | |
| 11 local rsm = module:require "mod_mam/rsm"; | |
| 12 local jid_bare = require "util.jid".bare; | |
| 13 local jid_split = require "util.jid".split; | |
| 14 local jid_prep = require "util.jid".prep; | |
| 15 local host = module.host; | |
| 16 | |
| 17 local dm_list_load = require "util.datamanager".list_load; | |
| 18 local dm_list_append = require "util.datamanager".list_append; | |
| 19 | |
| 20 local tostring = tostring; | |
| 21 local time_now = os.time; | |
| 22 local m_min = math.min; | |
| 23 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse; | |
| 24 local uuid = require "util.uuid".generate; | |
| 25 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50); | |
| 26 --local rooms_to_archive = module:get_option_set("rooms_to_archive",{}); | |
| 27 -- TODO Should be possible to enforce it too | |
| 28 | |
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29 local rooms = hosts[module.host].modules.muc.rooms; |
| 820 | 30 local archive_store = "archive2"; |
| 31 | |
| 32 -- Handle archive queries | |
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33 module:hook("iq-get/bare/"..xmlns_mam..":query", function(event) |
| 820 | 34 local origin, stanza = event.origin, event.stanza; |
| 35 local room = jid_split(stanza.attr.to); | |
| 36 local query = stanza.tags[1]; | |
| 37 | |
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38 local room_obj = rooms[room]; |
| 820 | 39 if not room_obj then |
| 40 return -- FIXME not found | |
| 41 end | |
| 42 local from = jid_bare(stanza.attr.from); | |
| 43 | |
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44 -- Banned or not a member of a members-only room? |
| 820 | 45 if room_obj._affiliations[from] == "outcast" |
| 46 or room_obj._data.members_only and not room_obj._affiliations[from] then | |
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47 return origin.send(st.error_reply(stanza, "auth", "forbidden")) |
| 820 | 48 end |
| 49 | |
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50 local qid = query.attr.queryid; |
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51 |
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52 -- Search query parameters |
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53 local qwith = query:get_child_text("with"); |
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54 local qstart = query:get_child_text("start"); |
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55 local qend = query:get_child_text("end"); |
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56 local qset = rsm.get(query); |
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57 module:log("debug", "Archive query, id %s with %s from %s until %s)", |
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58 tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now"); |
| 820 | 59 |
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60 if qstart or qend then -- Validate timestamps |
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61 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)) |
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62 if (qstart and not vstart) or (qend and not vend) then |
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63 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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64 return true |
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65 end |
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66 qstart, qend = vstart, vend; |
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67 end |
| 820 | 68 |
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69 local qres; |
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70 if qwith then -- Validate the 'with' jid |
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71 local pwith = qwith and jid_prep(qwith); |
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72 if pwith and not qwith then -- it failed prepping |
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73 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID")) |
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74 return true |
| 820 | 75 end |
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76 local _, _, resource = jid_split(qwith); |
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77 qwith = jid_bare(pwith); |
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78 qres = resource; |
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79 end |
| 820 | 80 |
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81 -- Load all the data! |
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82 local data, err = dm_list_load(room, module.host, archive_store); |
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83 if not data then |
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84 if (not err) then |
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85 module:log("debug", "The archive was empty."); |
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86 origin.send(st.reply(stanza)); |
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87 else |
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88 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error loading archive: "..tostring(err))); |
| 820 | 89 end |
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90 return true |
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91 end |
| 820 | 92 |
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93 -- RSM stuff |
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94 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
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95 local qset_matches = not (qset and qset.after); |
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96 local first, last, index; |
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97 local n = 0; |
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98 local start = qset and qset.index or 1; |
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99 |
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100 module:log("debug", "Loaded %d items, about to filter", #data); |
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101 for i=start,#data do |
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102 local item = data[i]; |
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103 local when, nick = item.when, item.resource; |
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104 local id = item.id; |
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105 --module:log("debug", "id is %s", id); |
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106 |
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107 -- RSM pre-send-checking |
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108 if qset then |
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109 if qset.before == id then |
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110 module:log("debug", "End of matching range found"); |
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111 qset_matches = false; |
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112 break; |
| 820 | 113 end |
| 114 end | |
| 115 | |
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116 --module:log("debug", "message with %s at %s", with, when or "???"); |
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117 -- Apply query filter |
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118 if (not qres or (qres == nick)) |
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119 and (not qstart or when >= qstart) |
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120 and (not qend or when <= qend) |
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121 and (not qset or qset_matches) then |
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122 local fwd_st = st.message{ to = stanza.attr.from } |
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123 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }):up() |
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124 :tag("forwarded", { xmlns = xmlns_forward }) |
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125 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); |
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126 local orig_stanza = st.deserialize(item.stanza); |
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127 orig_stanza.attr.xmlns = "jabber:client"; |
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128 fwd_st:add_child(orig_stanza); |
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129 origin.send(fwd_st); |
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130 if not first then |
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131 index = i; |
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132 first = id; |
| 820 | 133 end |
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134 last = id; |
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135 n = n + 1; |
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136 elseif (qend and when > qend) then |
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137 module:log("debug", "We have passed into messages more recent than requested"); |
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138 break -- We have passed into messages more recent than requested |
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139 end |
| 820 | 140 |
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141 -- RSM post-send-checking |
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142 if qset then |
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143 if qset.after == id then |
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144 module:log("debug", "Start of matching range found"); |
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145 qset_matches = true; |
| 820 | 146 end |
| 147 end | |
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148 if n >= qmax then |
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149 module:log("debug", "Max number of items matched"); |
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150 break |
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151 end |
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152 end |
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153 -- That's all folks! |
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154 module:log("debug", "Archive query %s completed", tostring(qid)); |
| 820 | 155 |
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156 local reply = st.reply(stanza); |
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157 if last then |
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158 -- This is a bit redundant, isn't it? |
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159 reply:query(xmlns_mam):add_child(rsm.generate{first = first, last = last, count = n}); |
| 820 | 160 end |
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161 origin.send(reply); |
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162 return true |
| 820 | 163 end); |
| 164 | |
| 165 -- Handle messages | |
| 166 local function message_handler(event) | |
| 167 local origin, stanza = event.origin, event.stanza; | |
| 168 local orig_type = stanza.attr.type or "normal"; | |
| 169 local orig_to = stanza.attr.to; | |
| 170 local orig_from = stanza.attr.from; | |
| 171 | |
| 172 -- Still needed? | |
| 173 if not orig_from then | |
| 174 orig_from = origin.full_jid; | |
| 175 end | |
| 176 | |
| 177 -- Only store groupchat messages | |
| 178 if not (orig_type == "groupchat" and (stanza:get_child("body") or stanza:get_child("subject"))) then | |
| 179 return; | |
| 180 end | |
| 181 | |
| 182 local room = jid_split(orig_to); | |
| 183 local room_obj = hosts[host].modules.muc.rooms[orig_to] | |
| 184 if not room_obj then return end | |
| 185 | |
| 186 local id = uuid(); | |
| 187 local when = time_now(); | |
| 188 local stanza = st.clone(stanza); -- Private copy | |
| 189 --stanza.attr.to = nil; | |
| 190 local nick = room_obj._jid_nick[orig_from]; | |
| 191 if not nick then return end | |
| 192 stanza.attr.from = nick; | |
| 193 local _, _, nick = jid_split(nick); | |
| 194 -- And stash it | |
| 195 local ok, err = dm_list_append(room, host, archive_store, { | |
| 196 -- WARNING This format may change. | |
| 197 id = id, | |
| 198 when = when, | |
| 199 resource = nick, | |
| 200 stanza = st.preserialize(stanza) | |
| 201 }); | |
| 202 --[[ This was dropped from the spec | |
| 203 if ok then | |
| 204 stanza:tag("archived", { xmlns = xmlns_mam, by = host, id = id }):up(); | |
| 205 end | |
| 206 --]] | |
| 207 end | |
| 208 | |
| 209 module:hook("message/bare", message_handler, 2); | |
| 210 | |
| 211 module:add_feature(xmlns_mam); |