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annotate mod_mam/mod_mam.lua @ 1254:b0136968bef1

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mod_component_roundrobin: Make sure we don’t try to use destroyed sessions.
author Waqas Hussain <waqas20@gmail.com>
date Thu, 19 Dec 2013 08:54:33 -0500
parents d677d1807bb0
children 853a382c9bd6
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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 "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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30 local m_min = math.min;
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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 });
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112
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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));
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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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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
122 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id })
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
123 :tag("forwarded", { xmlns = xmlns_forward })
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
124 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up();
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
125
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
126 if not is_stanza(item) then
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
127 item = st.deserialize(item);
1112
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Kim Alvefur <zash@zash.se>
parents: 1111
diff changeset
128 end
1116
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
129 item.attr.xmlns = "jabber:client";
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
130 fwd_st:add_child(item);
701
cc5805f83583 mod_mam: Implement support for Result Set Management in queries.
Kim Alvefur <zash@zash.se>
parents: 675
diff changeset
131
1116
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parents: 1114
diff changeset
132 if not first then first = id; end
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
133 last = id;
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
134
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
135 origin.send(fwd_st);
1112
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Kim Alvefur <zash@zash.se>
parents: 1111
diff changeset
136 end
1dc07833355e mod_mam: Use more specific hook
Kim Alvefur <zash@zash.se>
parents: 1111
diff changeset
137 -- That's all folks!
1dc07833355e mod_mam: Use more specific hook
Kim Alvefur <zash@zash.se>
parents: 1111
diff changeset
138 module:log("debug", "Archive query %s completed", tostring(qid));
705
c9d0ba39a33b mod_mam: Move RSM pointer to last message into a MAM-namespaced child
Kim Alvefur <zash@zash.se>
parents: 702
diff changeset
139
1114
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Kim Alvefur <zash@zash.se>
parents: 1113
diff changeset
140 if reverse then first, last = last, first; end
1113
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Kim Alvefur <zash@zash.se>
parents: 1112
diff changeset
141 return origin.send(st.reply(stanza)
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Kim Alvefur <zash@zash.se>
parents: 1112
diff changeset
142 :query(xmlns_mam):add_child(rsm.generate {
1116
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Kim Alvefur <zash@zash.se>
parents: 1114
diff changeset
143 first = first, last = last, count = count }));
523
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
144 end);
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Kim Alvefur <zash@zash.se>
parents:
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145
558
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
146 local function has_in_roster(user, who)
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
147 local roster = rm_load_roster(user, host);
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
148 module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no");
798
2b8ceb4d1a73 mod_mam: remove useless check
Kim Alvefur <zash@zash.se>
parents: 751
diff changeset
149 return roster[who];
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
150 end
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
151
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
152 local function shall_store(user, who)
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
153 -- TODO Cache this?
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
154 local prefs = get_prefs(user);
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
155 local rule = prefs[who];
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
156 module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule))
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
157 if rule ~= nil then
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
158 return rule;
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
159 else -- Below could be done by a metatable
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
160 local default = prefs[false];
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
161 module:log("debug", "%s's default rule is %s", user, tostring(default))
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
162 if default == nil then
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
163 default = global_default_policy;
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
164 module:log("debug", "Using global default rule, %s", tostring(default))
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
165 end
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
166 if default == "roster" then
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
167 return has_in_roster(user, who);
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
168 end
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
169 return default;
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
170 end
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
171 end
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
172
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Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
173 -- Handle messages
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 local function message_handler(event, c2s)
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
175 local origin, stanza = event.origin, event.stanza;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
176 local orig_type = stanza.attr.type or "normal";
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177 local orig_from = stanza.attr.from;
1149
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
178 local orig_to = stanza.attr.to or orig_from;
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Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
179 -- Stanza without 'to' are treated as if it was to their own bare jid
523
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Kim Alvefur <zash@zash.se>
parents:
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180
1150
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Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
181 -- We don't store messages of these types
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
182 if orig_type == "error"
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
183 or orig_type == "headline"
671
74efb2db00a6 mod_mam: From the spec: servers SHOULD NOT archive messages that do not have a <body/> child tag.
Thijs Alkemade <thijsalkemade@gmail.com>
parents: 666
diff changeset
184 or orig_type == "groupchat"
1150
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Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
185 -- or that don't have a <body/>
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Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
186 or not stanza:get_child("body")
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Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
187 -- or if hints suggest we shouldn't
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Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
188 or stanza:get_child("no-permanent-store", "urn:xmpp:hints")
296820f18ba6 mod_mam: Add support for XEP-0334: Message Processing Hints
Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
189 or stanza:get_child("no-store", "urn:xmpp:hints") then
296820f18ba6 mod_mam: Add support for XEP-0334: Message Processing Hints
Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
190 module:log("debug", "Not archiving stanza: %s (content)", stanza:top_tag());
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
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191 return;
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
192 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
193
1149
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
194 -- Whos storage do we put it in?
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
195 local store_user = c2s and origin.username or jid_split(orig_to);
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Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
196 -- And who are they chatting with?
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
197 local with = jid_bare(c2s and orig_to or orig_from);
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
198
1149
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
199 -- Check with the users preferences
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
200 if shall_store(store_user, with) then
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
201 module:log("debug", "Archiving stanza: %s", stanza:top_tag());
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
202
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
203 -- And stash it
1149
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
204 local ok, id = archive:append(store_user, time_now(), with, stanza);
1187
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
205 if ok then
1149
d055c44a7f61 mod_mam: Clean up and explain the code that determines who's archive we put the message in
Kim Alvefur <zash@zash.se>
parents: 1135
diff changeset
206 stanza:tag("archived", { xmlns = xmlns_mam, by = store_user.."@"..host, id = id }):up();
672
8ae5317ba032 mod_mam: local tostring and some comments
Kim Alvefur <zash@zash.se>
parents: 671
diff changeset
207 end
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
208 else
1150
296820f18ba6 mod_mam: Add support for XEP-0334: Message Processing Hints
Kim Alvefur <zash@zash.se>
parents: 1149
diff changeset
209 module:log("debug", "Not archiving stanza: %s (prefs)", stanza:top_tag());
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
210 end
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
211 end
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
212
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 local function c2s_message_handler(event)
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
214 return message_handler(event, true);
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 end
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 -- Stanzas sent by local clients
621
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
218 module:hook("pre-message/bare", c2s_message_handler, 2);
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
219 module:hook("pre-message/full", c2s_message_handler, 2);
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 -- Stanszas to local clients
621
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
221 module:hook("message/bare", message_handler, 2);
7bdd02056e2b mod_mam: Bumb priority up above carbons, so that archive ids are included
Kim Alvefur <zash@zash.se>
parents: 620
diff changeset
222 module:hook("message/full", message_handler, 2);
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
223
1187
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
224 local function post_carbons_handler(event)
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
225 event.stanza:maptags(function(tag)
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
226 if not ( tag.attr.xmlns == xmlns_mam and tag.name == "archived" ) then
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
227 return tag;
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
228 end
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
229 end);
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
230 end
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
231
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
232 module:hook("pre-message/bare", post_carbons_handler, 0.9);
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
233 module:hook("pre-message/full", post_carbons_handler, 0.9);
d677d1807bb0 mod_mam: Stamp outgoing messages with <archived> as well, but remove it after they should have passed through mod_carbons
Kim Alvefur <zash@zash.se>
parents: 1186
diff changeset
234
523
eff140d53b83 mod_mam: Add experimental implementation of the Message Archive Management ProtoXEP
Kim Alvefur <zash@zash.se>
parents:
diff changeset
235 module:add_feature(xmlns_mam);
558
66de25ffc8d9 mod_mam: Implement archiving preferences.
Kim Alvefur <zash@zash.se>
parents: 523
diff changeset
236