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237
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1 -- Prosody IM
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2 -- Copyright (C) 2010 Dai Zhiwei
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6 --
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7
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8 local st = require "util.stanza";
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9 local dm = require "util.datamanager";
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10 local jid = require "util.jid";
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11 local datetime = require "util.datetime";
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12
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13 local PREFS_DIR = "archive_muc_prefs";
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14 local ARCHIVE_DIR = "archive_muc";
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15
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16 local HOST = 'localhost';
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17
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18 local AUTO_ARCHIVING_ENABLED = true;
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19
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20 module:add_feature("urn:xmpp:archive#preferences");
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21 module:add_feature("urn:xmpp:archive#management");
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22
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23 ------------------------------------------------------------
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24 -- Utils
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25 ------------------------------------------------------------
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26 local function load_prefs(node, host)
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27 return st.deserialize(dm.load(node, host, PREFS_DIR));
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28 end
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29
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30 local function store_prefs(data, node, host)
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31 dm.store(node, host, PREFS_DIR, st.preserialize(data));
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32 end
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33
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34 local function date_time(localtime)
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35 return datetime.datetime(localtime);
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36 end
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37
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38 local function match_jid(rule, id)
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39 return not rule or jid.compare(id, rule);
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40 end
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41
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42 local function is_earlier(start, coll_start)
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43 return not start or start <= coll_start;
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44 end
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45
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46 local function is_later(endtime, coll_start)
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47 return not endtime or endtime >= coll_start;
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48 end
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49
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50 ------------------------------------------------------------
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51 -- Preferences
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52 ------------------------------------------------------------
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53 local function preferences_handler(event)
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54 local origin, stanza = event.origin, event.stanza;
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55 module:log("debug", "-- Enter muc preferences_handler()");
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56 module:log("debug", "-- muc pref:\n%s", tostring(stanza));
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57 if stanza.attr.type == "get" then
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58 local data = load_prefs(origin.username, origin.host);
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59 if data then
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60 origin.send(st.reply(stanza):add_child(data));
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61 else
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62 origin.send(st.reply(stanza));
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63 end
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64 elseif stanza.attr.type == "set" then
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65 local node, host = origin.username, origin.host;
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66 if stanza.tags[1] and stanza.tags[1].name == 'prefs' then
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67 store_prefs(stanza.tags[1], node, host);
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68 origin.send(st.reply(stanza));
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69 local user = bare_sessions[node.."@"..host];
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70 local push = st.iq({type="set"});
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71 push:add_child(stanza.tags[1]);
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72 for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources
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73 if res.presence then -- to resource
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74 push.attr.to = res.full_jid;
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75 res.send(push);
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76 end
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77 end
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78 end
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79 end
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80 return true;
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81 end
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82
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83 ------------------------------------------------------------
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84 -- Archive Management
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85 ------------------------------------------------------------
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86 local function management_handler(event)
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87 module:log("debug", "-- Enter muc management_handler()");
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88 local origin, stanza = event.origin, event.stanza;
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89 local node, host = origin.username, origin.host;
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90 local data = dm.list_load(node, host, ARCHIVE_DIR);
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91 local elem = stanza.tags[1];
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92 local resset = {}
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93 if data then
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94 for i = #data, 1, -1 do
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95 local forwarded = st.deserialize(data[i]);
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96 local res = (match_jid(elem.attr["with"], forwarded.tags[2].attr.from)
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97 or match_jid(elem.attr["with"], forwarded.tags[2].attr.to))
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98 and is_earlier(elem.attr["start"], forwarded.tags[1].attr["stamp"])
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99 and is_later(elem.attr["end"], forwarded.tags[1].attr["stamp"]);
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100 if res then
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101 table.insert(resset, forwarded);
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102 end
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103 end
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104 for i = #resset, 1, -1 do
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105 local res = st.message({to = stanza.attr.from, id=st.new_id()});
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106 res:add_child(resset[i]);
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107 origin.send(res);
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108 end
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109 end
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110 origin.send(st.reply(stanza));
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111 return true;
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112 end
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113
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114 ------------------------------------------------------------
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115 -- Message Handler
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116 ------------------------------------------------------------
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117 local function is_in(list, jid)
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118 for _,v in ipairs(list) do
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119 if match_jid(v:get_text(), jid) then -- JID Matching
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120 return true;
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121 end
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122 end
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123 return false;
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124 end
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125
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126 local function is_in_roster(node, host, jid)
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127 -- TODO
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128 return true;
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129 end
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130
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131 local function apply_pref(node, host, jid)
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132 local pref = load_prefs(node, host);
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133 if not pref then
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134 return AUTO_ARCHIVING_ENABLED;
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135 end
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136 local always = pref:child_with_name('always');
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137 if always and is_in(always, jid) then
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138 return true;
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139 end
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140 local never = pref:child_with_name('never');
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141 if never and is_in(never, jid) then
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142 return false;
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143 end
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144 local default = pref.attr['default'];
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145 if default == 'roster' then
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146 return is_in_roster(node, host, jid);
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147 elseif default == 'always' then
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148 return true;
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149 elseif default == 'never' then
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150 return false;
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151 end
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152 return AUTO_ARCHIVING_ENABLED;
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153 end
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154
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155 local function store_msg(msg, node, host)
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156 local forwarded = st.stanza('forwarded', {xmlns='urn:xmpp:forward:tmp'});
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157 forwarded:tag('delay', {xmlns='urn:xmpp:delay',stamp=date_time()}):up();
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158 forwarded:add_child(msg);
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159 dm.list_append(node, host, ARCHIVE_DIR, st.preserialize(forwarded));
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160 end
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161
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162 local function msg_handler(data)
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163 module:log("debug", "-- Enter muc msg_handler()");
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164 local origin, stanza = data.origin, data.stanza;
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165 local body = stanza:child_with_name("body");
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166 if body then
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167 local from_node, from_host = jid.split(stanza.attr.from);
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168 local to_node, to_host = jid.split(stanza.attr.to);
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169 -- FIXME only archive messages of users on this host
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170 if from_host == HOST and apply_pref(from_node, from_host, stanza.attr.to) then
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171 store_msg(stanza, from_node, from_host);
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172 end
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173 if to_host == HOST and apply_pref(to_node, to_host, stanza.attr.from) then
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174 store_msg(stanza, to_node, to_host);
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175 end
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176 end
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177
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178 return nil;
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179 end
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180
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181 -- Preferences
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182 module:hook("iq/self/urn:xmpp:archive#preferences:prefs", preferences_handler);
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183 -- Archive management
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184 module:hook("iq/self/urn:xmpp:archive#management:query", management_handler);
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185
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186 module:hook("message/full", msg_handler, 20);
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187 module:hook("message/bare", msg_handler, 20);
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188
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189 -- TODO prefs: [1] = "\n ";
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