annotate mod_mam_archive/mod_mam_archive.lua @ 2782:8fd37f0e108c

mod_firewall: Don't interpret format specifiers in LOG May include untrusted input (e.g. $(stanza)), and there is no legitimate way to provide additional parameters anyway.
author Matthew Wild <mwild1@gmail.com>
date Wed, 04 Oct 2017 10:54:52 +0100
parents 3e97dae28215
children 8ff308fad9fd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 --
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3 -- This project is MIT/X11 licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6 local get_prefs = module:require"mod_mam/mamprefs".get;
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7 local set_prefs = module:require"mod_mam/mamprefs".set;
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8 local rsm = require "util.rsm";
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9 local jid_bare = require "util.jid".bare;
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10 local jid_prep = require "util.jid".prep;
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11 local date_parse = require "util.datetime".parse;
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12 local date_format = require "util.datetime".datetime;
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13
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14 local st = require "util.stanza";
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15 local archive_store = "archive2";
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16 local archive = module:open_store(archive_store, "archive");
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17 local global_default_policy = module:get_option("default_archive_policy", false);
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18 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50);
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19 local conversation_interval = tonumber(module:get_option_number("archive_conversation_interval", 86400));
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20 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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21
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22 -- Feature discovery
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23 local xmlns_archive = "urn:xmpp:archive"
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24 local feature_archive = st.stanza("feature", {xmlns=xmlns_archive}):tag("optional");
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25 if(global_default_policy) then
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26 feature_archive:tag("default");
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27 end
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28 module:add_extension(feature_archive);
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29 module:add_feature("urn:xmpp:archive:auto");
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30 module:add_feature("urn:xmpp:archive:manage");
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31 module:add_feature("urn:xmpp:archive:pref");
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32 module:add_feature("http://jabber.org/protocol/rsm");
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33 -- --------------------------------------------------
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34
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35 local function prefs_to_stanza(prefs)
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36 local prefstanza = st.stanza("pref", { xmlns="urn:xmpp:archive" });
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37 local default = prefs[false] ~= nil and prefs[false] or global_default_policy;
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38
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39 prefstanza:tag("default", {otr="oppose", save=default and "true" or "false"}):up();
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40 prefstanza:tag("method", {type="auto", use="concede"}):up();
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41 prefstanza:tag("method", {type="local", use="concede"}):up();
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42 prefstanza:tag("method", {type="manual", use="concede"}):up();
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43
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44 for jid, choice in pairs(prefs) do
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45 if jid then
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46 prefstanza:tag("item", {jid=jid, otr="prefer", save=choice and "message" or "false" }):up()
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47 end
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48 end
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49
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50 return prefstanza;
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51 end
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52 local function prefs_from_stanza(stanza, username)
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53 local current_prefs = get_prefs(username);
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54
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55 -- "default" | "item" | "session" | "method"
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56 for elem in stanza:children() do
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57 if elem.name == "default" then
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58 current_prefs[false] = elem.attr["save"] == "true";
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59 elseif elem.name == "item" then
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60 current_prefs[elem.attr["jid"]] = not elem.attr["save"] == "false";
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61 elseif elem.name == "session" then
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62 module:log("info", "element is not supported: " .. tostring(elem));
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63 -- local found = false;
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64 -- for child in data:children() do
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65 -- if child.name == elem.name and child.attr["thread"] == elem.attr["thread"] then
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66 -- for k, v in pairs(elem.attr) do
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67 -- child.attr[k] = v;
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68 -- end
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69 -- found = true;
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70 -- break;
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71 -- end
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72 -- end
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73 -- if not found then
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74 -- data:tag(elem.name, elem.attr):up();
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75 -- end
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76 elseif elem.name == "method" then
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77 module:log("info", "element is not supported: " .. tostring(elem));
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78 -- local newpref = stanza.tags[1]; -- iq:pref
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79 -- for _, e in ipairs(newpref.tags) do
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80 -- -- if e.name ~= "method" then continue end
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81 -- local found = false;
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82 -- for child in data:children() do
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83 -- if child.name == "method" and child.attr["type"] == e.attr["type"] then
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84 -- child.attr["use"] = e.attr["use"];
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85 -- found = true;
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86 -- break;
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87 -- end
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88 -- end
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89 -- if not found then
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90 -- data:tag(e.name, e.attr):up();
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91 -- end
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92 -- end
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93 end
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94 end
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95 end
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96
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97 ------------------------------------------------------------
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98 -- Preferences
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99 ------------------------------------------------------------
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100 local function preferences_handler(event)
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101 local origin, stanza = event.origin, event.stanza;
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102 local user = origin.username;
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103 local reply = st.reply(stanza);
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104
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105 if stanza.attr.type == "get" then
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106 reply:add_child(prefs_to_stanza(get_prefs(user)));
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107 end
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108 if stanza.attr.type == "set" then
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109 local new_prefs = stanza:get_child("pref", xmlns_archive);
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110 if not new_prefs then return false; end
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111
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112 local prefs = prefs_from_stanza(stanza, origin.username);
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113 local ok, err = set_prefs(user, prefs);
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114
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115 if not ok then
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116 return origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err)));
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117 end
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118 end
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119 return origin.send(reply);
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120 end
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121 local function auto_handler(event)
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122 local origin, stanza = event.origin, event.stanza;
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123 if not stanza.attr["type"] == "set" then return false; end
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124
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125 local user = origin.username;
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126 local prefs = get_prefs(user);
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127 local auto = stanza:get_child("auto", xmlns_archive);
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128
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129 prefs[false] = auto.attr["save"] ~= nil and auto.attr["save"] == "true" or false;
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130 set_prefs(user, prefs);
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131
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132 return origin.send(st.reply(stanza));
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133 end
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134
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135 -- excerpt from mod_storage_sql2
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136 local function get_db()
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137 local mod_sql = module:require("sql");
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138 local params = module:get_option("sql");
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139 local engine;
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140
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141 params = params or { driver = "SQLite3" };
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142 if params.driver == "SQLite3" then
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143 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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144 end
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145
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146 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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147 engine = mod_sql:create_engine(params);
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148 engine:set_encoding();
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149
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150 return engine;
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151 end
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152
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153 ------------------------------------------------------------
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154 -- Collections. In our case there is one conversation with each contact for the whole day for simplicity
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155 ------------------------------------------------------------
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156 local function list_stanza_to_query(origin, list_el)
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157 local sql = "SELECT `with`, `when` / ".. conversation_interval .." as `day`, COUNT(0) FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=? ";
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158 local args = {origin.host, origin.username, archive_store};
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159
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160 local with = list_el.attr["with"];
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161 if with ~= nil then
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162 sql = sql .. "AND `with` = ? ";
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163 table.insert(args, jid_bare(with));
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164 end
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165
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166 local after = list_el.attr["start"];
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167 if after ~= nil then
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168 sql = sql .. "AND `when` >= ? ";
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169 table.insert(args, date_parse(after));
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170 end
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171
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172 local before = list_el.attr["end"];
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173 if before ~= nil then
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174 sql = sql .. "AND `when` <= ? ";
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175 table.insert(args, date_parse(before));
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176 end
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177
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178 sql = sql .. "GROUP BY `with`, `when` / ".. conversation_interval .." ORDER BY `when` / ".. conversation_interval .." ASC ";
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179
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180 local qset = rsm.get(list_el);
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181 local limit = math.min(qset and qset.max or default_max_items, max_max_items);
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182 sql = sql.."LIMIT ?";
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183 table.insert(args, limit);
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184
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185 table.insert(args, 1, sql);
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186 return args;
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187 end
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188 local function list_handler(event)
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189 local db = get_db();
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190 local origin, stanza = event.origin, event.stanza;
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191 local reply = st.reply(stanza);
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192
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193 local query = list_stanza_to_query(origin, stanza.tags[1]);
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194 local list = reply:tag("list", {xmlns=xmlns_archive});
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195
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196 for row in db:select(unpack(query)) do
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197 list:tag("chat", {
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198 xmlns=xmlns_archive,
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199 with=row[1],
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200 start=date_format(row[2] * conversation_interval),
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201 version=row[3]
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202 }):up();
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203 end
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204
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205 origin.send(reply);
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206 return true;
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207 end
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208
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209 ------------------------------------------------------------
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210 -- Message archive retrieval
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211 ------------------------------------------------------------
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212
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213 local function retrieve_handler(event)
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214 local origin, stanza = event.origin, event.stanza;
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215 local reply = st.reply(stanza);
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216
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217 local retrieve = stanza:get_child("retrieve", xmlns_archive);
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218
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219 local qwith = retrieve.attr["with"];
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220 local qstart = retrieve.attr["start"];
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221
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222 module:log("debug", "Archive query, with %s from %s)",
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223 qwith or "anyone", qstart or "the dawn of time");
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224
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225 if qstart then -- Validate timestamps
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226 local vstart = (qstart and date_parse(qstart));
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227 if (qstart and not vstart) then
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228 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp"))
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229 return true
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230 end
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231 qstart = vstart;
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232 end
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233
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234 if qwith then -- Validate the "with" jid
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235 local pwith = qwith and jid_prep(qwith);
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236 if pwith and not qwith then -- it failed prepping
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237 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID"))
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238 return true
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239 end
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240 qwith = jid_bare(pwith);
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241 end
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242
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243 -- RSM stuff
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244 local qset = rsm.get(retrieve);
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245 local qmax = math.min(qset and qset.max or default_max_items, max_max_items);
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246 local reverse = qset and qset.before or false;
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247 local before, after = qset and qset.before, qset and qset.after;
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248 if type(before) ~= "string" then before = nil; end
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249
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250 -- Load all the data!
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251 local data, err = archive:find(origin.username, {
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252 start = qstart; ["end"] = qstart + conversation_interval;
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253 with = qwith;
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254 limit = qmax;
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255 before = before; after = after;
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256 reverse = reverse;
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257 total = true;
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258 });
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259
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260 if not data then
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261 return origin.send(st.error_reply(stanza, "cancel", "internal-server-error", err));
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262 end
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263 local count = err;
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264
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265 local chat = reply:tag("chat", {xmlns=xmlns_archive, with=qwith, start=date_format(qstart), version=count});
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266 local first, last;
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267
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268 module:log("debug", "Count "..count);
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269 for id, item, when in data do
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270 if not getmetatable(item) == st.stanza_mt then
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271 item = st.deserialize(item);
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272 end
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273 module:log("debug", tostring(item));
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274
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275 local tag = jid_bare(item.attr["from"]) == jid_bare(origin.full_jid) and "to" or "from";
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276 tag = chat:tag(tag, {secs = when - qstart});
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277 tag:add_child(item:get_child("body")):up();
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278 if not first then first = id; end
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279 last = id;
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280 end
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281 reply:add_child(rsm.generate{ first = first, last = last, count = count })
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282
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283 origin.send(reply);
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284 return true;
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285 end
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286
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287 local function not_implemented(event)
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288 local origin, stanza = event.origin, event.stanza;
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289 local reply = st.reply(stanza):tag("error", {type="cancel"});
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290 reply:tag("feature-not-implemented", {xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
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291 origin.send(reply);
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292 end
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293
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294 -- Preferences
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295 module:hook("iq/self/urn:xmpp:archive:pref", preferences_handler);
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296 module:hook("iq/self/urn:xmpp:archive:auto", auto_handler);
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297 module:hook("iq/self/urn:xmpp:archive:itemremove", not_implemented);
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298 module:hook("iq/self/urn:xmpp:archive:sessionremove", not_implemented);
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299
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300 -- Message Archive Management
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301 module:hook("iq/self/urn:xmpp:archive:list", list_handler);
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302 module:hook("iq/self/urn:xmpp:archive:retrieve", retrieve_handler);
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303 module:hook("iq/self/urn:xmpp:archive:remove", not_implemented);
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304
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305 -- manual archiving
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306 module:hook("iq/self/urn:xmpp:archive:save", not_implemented);
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307 -- replication
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308 module:hook("iq/self/urn:xmpp:archive:modified", not_implemented);