Mercurial > prosody-modules
annotate mod_mam/mod_mam.lua @ 1295:dfe1818962f5
mod_require_otr: New module to (attempt to) require that all messages are encrypted with OTR (credit for the idea goes to Gregory Maxwell on the liberationtech mailing list)
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 01 Feb 2014 04:42:30 +0500 |
parents | d677d1807bb0 |
children | 853a382c9bd6 |
rev | line source |
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635 | 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 "rsm"; |
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12 local prefs = module:require"mamprefs"; |
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13 local prefsxml = module:require"mamprefsxml"; |
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14 local set_prefs, get_prefs = prefs.set, prefs.get; |
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15 local prefs_to_stanza, prefs_from_stanza = prefsxml.tostanza, prefsxml.fromstanza; |
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16 local jid_bare = require "util.jid".bare; |
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17 local jid_split = require "util.jid".split; |
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18 local jid_prep = require "util.jid".prep; |
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19 local host = module.host; |
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20 |
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21 local rm_load_roster = require "core.rostermanager".load_roster; |
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22 |
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23 local getmetatable = getmetatable; |
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24 local function is_stanza(x) |
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25 return getmetatable(x) == st.stanza_mt; |
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26 end |
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27 |
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28 local tostring = tostring; |
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29 local time_now = os.time; |
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31 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse; |
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32 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50); |
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33 local global_default_policy = module:get_option("default_archive_policy", false); |
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34 |
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35 local archive_store = "archive2"; |
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36 local archive = module:open_store(archive_store, "archive"); |
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37 if not archive then |
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38 module:log("error", "Could not open archive storage"); |
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39 return |
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40 elseif not archive.find then |
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41 module:log("error", "mod_%s does not support archiving, switch to mod_storage_sql2", archive._provided_by); |
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42 return |
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43 end |
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44 |
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45 -- Handle prefs. |
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46 module:hook("iq/self/"..xmlns_mam..":prefs", function(event) |
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47 local origin, stanza = event.origin, event.stanza; |
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48 local user = origin.username; |
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49 if stanza.attr.type == "get" then |
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50 local prefs = prefs_to_stanza(get_prefs(user)); |
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51 local reply = st.reply(stanza):add_child(prefs); |
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52 return origin.send(reply); |
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53 else -- type == "set" |
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54 local new_prefs = stanza:get_child("prefs", xmlns_mam); |
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55 local prefs = prefs_from_stanza(new_prefs); |
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56 local ok, err = set_prefs(user, prefs); |
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57 if not ok then |
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58 return origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err))); |
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59 end |
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60 return origin.send(st.reply(stanza)); |
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61 end |
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62 end); |
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63 |
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64 -- Handle archive queries |
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65 module:hook("iq-get/self/"..xmlns_mam..":query", function(event) |
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66 local origin, stanza = event.origin, event.stanza; |
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67 local query = stanza.tags[1]; |
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68 local qid = query.attr.queryid; |
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69 |
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70 -- Search query parameters |
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71 local qwith = query:get_child_text("with"); |
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72 local qstart = query:get_child_text("start"); |
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73 local qend = query:get_child_text("end"); |
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74 module:log("debug", "Archive query, id %s with %s from %s until %s)", |
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75 tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now"); |
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76 |
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77 if qstart or qend then -- Validate timestamps |
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78 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)) |
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79 if (qstart and not vstart) or (qend and not vend) then |
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80 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) |
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81 return true |
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82 end |
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83 qstart, qend = vstart, vend; |
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84 end |
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85 |
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86 if qwith then -- Validate the 'with' jid |
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87 local pwith = qwith and jid_prep(qwith); |
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88 if pwith and not qwith then -- it failed prepping |
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89 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID")) |
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90 return true |
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91 end |
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92 qwith = jid_bare(pwith); |
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93 end |
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94 |
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95 -- RSM stuff |
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96 local qset = rsm.get(query); |
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97 local qmax = m_min(qset and qset.max or default_max_items, max_max_items); |
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98 local reverse = qset and qset.before or false; |
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99 local before, after = qset and qset.before, qset and qset.after; |
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100 if type(before) ~= "string" then before = nil; end |
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101 |
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102 |
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103 -- Load all the data! |
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104 local data, err = archive:find(origin.username, { |
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105 start = qstart; ["end"] = qend; -- Time range |
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106 with = qwith; |
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107 limit = qmax; |
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108 before = before; after = after; |
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109 reverse = reverse; |
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110 total = true; |
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111 }); |
558
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112 |
1116
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113 if not data then |
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114 return origin.send(st.error_reply(stanza, "cancel", "internal-server-error", err)); |
1116
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115 end |
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116 local count = err; |
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117 |
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118 -- Wrap it in stuff and deliver |
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119 local first, last; |
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120 for id, item, when in data do |
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121 local fwd_st = st.message{ to = origin.full_jid } |
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122 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) |
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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 |
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126 if not is_stanza(item) then |
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127 item = st.deserialize(item); |
1112
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128 end |
1116
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129 item.attr.xmlns = "jabber:client"; |
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130 fwd_st:add_child(item); |
701
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131 |
1116
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132 if not first then first = id; end |
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133 last = id; |
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134 |
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135 origin.send(fwd_st); |
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136 end |
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137 -- That's all folks! |
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138 module:log("debug", "Archive query %s completed", tostring(qid)); |
705
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139 |
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140 if reverse then first, last = last, first; end |
1113 | 141 return origin.send(st.reply(stanza) |
142 :query(xmlns_mam):add_child(rsm.generate { | |
1116
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143 first = first, last = last, count = count })); |
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144 end); |
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145 |
558
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146 local function has_in_roster(user, who) |
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147 local roster = rm_load_roster(user, host); |
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148 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no"); |
798 | 149 return roster[who]; |
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150 end |
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151 |
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152 local function shall_store(user, who) |
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153 -- TODO Cache this? |
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154 local prefs = get_prefs(user); |
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155 local rule = prefs[who]; |
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156 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule)) |
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157 if rule ~= nil then |
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158 return rule; |
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159 else -- Below could be done by a metatable |
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160 local default = prefs[false]; |
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161 module:log("debug", "%s's default rule is %s", user, tostring(default)) |
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162 if default == nil then |
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163 default = global_default_policy; |
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164 module:log("debug", "Using global default rule, %s", tostring(default)) |
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165 end |
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166 if default == "roster" then |
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167 return has_in_roster(user, who); |
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168 end |
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169 return default; |
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170 end |
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171 end |
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172 |
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173 -- Handle messages |
523
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174 local function message_handler(event, c2s) |
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175 local origin, stanza = event.origin, event.stanza; |
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176 local orig_type = stanza.attr.type or "normal"; |
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177 local orig_from = stanza.attr.from; |
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|
178 local orig_to = stanza.attr.to or orig_from; |
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179 -- Stanza without 'to' are treated as if it was to their own bare jid |
523
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180 |
1150
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181 -- We don't store messages of these types |
523
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|
182 if orig_type == "error" |
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|
183 or orig_type == "headline" |
671
74efb2db00a6
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Thijs Alkemade <thijsalkemade@gmail.com>
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666
diff
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|
184 or orig_type == "groupchat" |
1150
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185 -- or that don't have a <body/> |
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|
186 or not stanza:get_child("body") |
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187 -- or if hints suggest we shouldn't |
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188 or stanza:get_child("no-permanent-store", "urn:xmpp:hints") |
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|
189 or stanza:get_child("no-store", "urn:xmpp:hints") then |
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|
190 module:log("debug", "Not archiving stanza: %s (content)", stanza:top_tag()); |
523
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|
191 return; |
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|
192 end |
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|
193 |
1149
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194 -- Whos storage do we put it in? |
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|
195 local store_user = c2s and origin.username or jid_split(orig_to); |
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196 -- And who are they chatting with? |
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|
197 local with = jid_bare(c2s and orig_to or orig_from); |
558
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198 |
1149
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199 -- Check with the users preferences |
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|
200 if shall_store(store_user, with) then |
558
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diff
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|
201 module:log("debug", "Archiving stanza: %s", stanza:top_tag()); |
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|
202 |
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|
203 -- And stash it |
1149
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|
204 local ok, id = archive:append(store_user, time_now(), with, stanza); |
1187
d677d1807bb0
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Kim Alvefur <zash@zash.se>
parents:
1186
diff
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|
205 if ok then |
1149
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|
206 stanza:tag("archived", { xmlns = xmlns_mam, by = store_user.."@"..host, id = id }):up(); |
672
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Kim Alvefur <zash@zash.se>
parents:
671
diff
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|
207 end |
558
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|
208 else |
1150
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|
209 module:log("debug", "Not archiving stanza: %s (prefs)", stanza:top_tag()); |
558
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|
210 end |
523
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|
211 end |
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|
212 |
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diff
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|
213 local function c2s_message_handler(event) |
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|
214 return message_handler(event, true); |
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|
215 end |
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|
216 |
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|
217 -- Stanzas sent by local clients |
621
7bdd02056e2b
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Kim Alvefur <zash@zash.se>
parents:
620
diff
changeset
|
218 module:hook("pre-message/bare", c2s_message_handler, 2); |
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Kim Alvefur <zash@zash.se>
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diff
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|
219 module:hook("pre-message/full", c2s_message_handler, 2); |
523
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|
220 -- Stanszas to local clients |
621
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221 module:hook("message/bare", message_handler, 2); |
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222 module:hook("message/full", message_handler, 2); |
523
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223 |
1187
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224 local function post_carbons_handler(event) |
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225 event.stanza:maptags(function(tag) |
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226 if not ( tag.attr.xmlns == xmlns_mam and tag.name == "archived" ) then |
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227 return tag; |
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228 end |
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229 end); |
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230 end |
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231 |
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232 module:hook("pre-message/bare", post_carbons_handler, 0.9); |
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233 module:hook("pre-message/full", post_carbons_handler, 0.9); |
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234 |
523
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235 module:add_feature(xmlns_mam); |
558
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236 |