verse
1897dc6a07bb
plugins/archive.lua

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plugins/archive.lua @ 298:1897dc6a07bb

util.vcard: Don't use module()
author Kim Alvefur <zash@zash.se>
date Sun, 13 May 2012 20:14:32 +0200
parent 297:447dffdaf46c
child 303:0dda04d5eb84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b78137f5118e plugins.archive: Add a header comment
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1 -- This implements XEP-0313: Message Archive Management
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2 -- http://xmpp.org/extensions/xep-0313.html
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3 -- (ie not XEP-0136)
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b674f5ca85d4 plugins.archive: Add local verse
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5 local verse = require "verse";
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6 local st = require "util.stanza";
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7 local xmlns_mam = "urn:xmpp:mam:tmp"
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8 local xmlns_forward = "urn:xmpp:forward:0";
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9 local xmlns_delay = "urn:xmpp:delay";
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10 local uuid = require "util.uuid".generate;
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11 local parse_datetime = require "util.datetime".parse;
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12
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13 function verse.plugins.archive(stream)
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14 function stream:query_archive(where, query_params, callback)
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15 local queryid = uuid();
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16 local query_st = st.iq{ type="get", to = where }
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17 :tag("query", { xmlns = xmlns_mam, queryid = queryid });
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18
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19 local params = { "with", "start", "end" };
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20 local query_params = query_params or {};
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21 for i=1,#params do
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22 local k = params[i];
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23 if query_params[k] then
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24 query_st:tag(k):text(query_params[k]):up();
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25 end
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26 end
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27
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28 local results = {};
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29 local function handle_archived_message(message)
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30 local result_tag = message:get_child("result", xmlns_mam);
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31 if result_tag and result_tag.attr.queryid == queryid then
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32 local forwarded = message:get_child("forwarded", xmlns_forward);
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33
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34 local id = result_tag.attr.id;
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35 local delay = forwarded:get_child("delay", xmlns_delay);
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36 local stamp = delay and parse_datetime(delay.attr.stamp) or nil;
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37
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38 local message = forwarded:get_child("message", "jabber:client")
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39
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40 results[#results+1] = { id = id, stamp = stamp, message = message };
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41 return true
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42 end
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43 end
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44
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45 self:hook("message", handle_archived_message, 1);
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46 self:send_iq(query_st, function(reply)
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47 self:unhook("message", handle_archived_message);
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48 callback(reply.attr.type == "result" and #results, results);
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49 return true
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50 end);
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51 end
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52
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53 local default_attrs = {
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54 always = true, [true] = "always",
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55 never = false, [false] = "never",
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56 roster = "roster",
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57 }
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58
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59 local function prefs_decode(stanza) -- from XML
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60 local prefs = {};
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61 local default = stanza.attr.default;
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62
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63 if default then
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64 prefs[false] = default_attrs[default];
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65 end
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66
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67 local always = stanza:get_child("always");
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68 if always then
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69 for rule in always:childtags("jid") do
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70 local jid = rule:get_text();
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71 prefs[jid] = true;
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72 end
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73 end
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74
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75 local never = stanza:get_child("never");
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76 if never then
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77 for rule in never:childtags("jid") do
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78 local jid = rule:get_text();
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79 prefs[jid] = false;
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80 end
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81 end
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82 return prefs;
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83 end
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84
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85 local function prefs_encode(prefs) -- into XML
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86 local default
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87 default, prefs[false] = prefs[false], nil;
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88 if default ~= nil then
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89 default = default_attrs[default];
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90 end
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91 local reply = st.stanza("prefs", { xmlns = xmlns_mam, default = default })
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92 local always = st.stanza("always");
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93 local never = st.stanza("never");
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94 for k,v in pairs(prefs) do
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95 (v and always or never):tag("jid"):text(k):up();
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96 end
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97 return reply:add_child(always):add_child(never);
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98 end
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99
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100 function stream:archive_prefs_get(callback)
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101 self:send_iq(st.iq{ type="get" }:tag("prefs", { xmlns = xmlns_mam }),
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102 function(result)
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103 if result and result.attr.type == "result" and result.tags[1] then
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104 local prefs = prefs_decode(result.tags[1]);
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105 callback(prefs, result);
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106 else
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107 callback(nil, result);
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108 end
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109 end);
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110 end
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111
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112 function stream:archive_prefs_set(prefs, callback)
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113 self:send_iq(st.iq{ type="set" }:add_child(prefs_encode(prefs)), callback);
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114 end
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115 end