annotate mod_log_messages_sql/mod_log_messages_sql.lua @ 1268:854a3933cfcd

mod_muc_log_http: URL-encode room names. This allows special characters in room names to work. Ideally this escaping shouldn’t be done in the user visible content, but the module’s template system doesn’t currently allow that.
author Waqas Hussain <waqas20@gmail.com>
date Sat, 04 Jan 2014 16:50:57 -0500
parents 2c38d7d8b332
children 7dbde05b48a9
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1 -- Based on mod_mam_sql
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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 st = require "util.stanza";
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7 local jid_bare = require "util.jid".bare;
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8 local jid_split = require "util.jid".split;
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9
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10 local serialize = require"util.json".encode, require"util.json".decode;
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11 local tostring = tostring;
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12 local time_now = os.time;
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13
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14 local sql, setsql, getsql = {};
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15 do -- SQL stuff
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16 local connection;
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17 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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18 local params = module:get_option("message_log_sql", module:get_option("sql"));
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19
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20 local function test_connection()
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21 if not connection then return nil; end
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22 if connection:ping() then
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23 return true;
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24 else
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25 module:log("debug", "Database connection closed");
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26 connection = nil;
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27 end
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28 end
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29 local function connect()
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30 if not test_connection() then
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31 prosody.unlock_globals();
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32 local dbh, err = DBI.Connect(
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33 params.driver, params.database,
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34 params.username, params.password,
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35 params.host, params.port
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36 );
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37 prosody.lock_globals();
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38 if not dbh then
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39 module:log("debug", "Database connection failed: %s", tostring(err));
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40 return nil, err;
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41 end
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42 module:log("debug", "Successfully connected to database");
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43 dbh:autocommit(false); -- don't commit automatically
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44 connection = dbh;
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45
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46 end
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47 return connection;
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48 end
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49
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50 do -- process options to get a db connection
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51 local ok;
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52 prosody.unlock_globals();
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53 ok, DBI = pcall(require, "DBI");
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54 if not ok then
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55 package.loaded["DBI"] = {};
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56 module:log("error", "Failed to load the LuaDBI library for accessing SQL databases: %s", DBI);
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57 module:log("error", "More information on installing LuaDBI can be found at http://prosody.im/doc/depends#luadbi");
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58 end
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59 prosody.lock_globals();
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60 if not ok or not DBI.Connect then
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61 return; -- Halt loading of this module
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62 end
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63
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64 params = params or { driver = "SQLite3" };
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65
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66 if params.driver == "SQLite3" then
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67 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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68 end
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69
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70 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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71
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72 assert(connect());
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73
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74 end
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75
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76 function getsql(sql, ...)
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77 if params.driver == "PostgreSQL" then
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78 sql = sql:gsub("`", "\"");
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79 end
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80 -- do prepared statement stuff
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81 local stmt, err = connection:prepare(sql);
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82 if not stmt and not test_connection() then error("connection failed"); end
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83 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
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84 -- run query
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85 local ok, err = stmt:execute(...);
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86 if not ok and not test_connection() then error("connection failed"); end
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87 if not ok then return nil, err; end
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88
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89 return stmt;
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90 end
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91 function setsql(sql, ...)
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92 local stmt, err = getsql(sql, ...);
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93 if not stmt then return stmt, err; end
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94 return stmt:affected();
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95 end
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96 function sql.rollback(...)
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97 if connection then connection:rollback(); end -- FIXME check for rollback error?
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98 return ...;
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99 end
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100 function sql.commit(...)
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101 if not connection:commit() then return nil, "SQL commit failed"; end
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102 return ...;
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103 end
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104
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105 end
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106
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107 -- Handle messages
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108 local function message_handler(event, c2s)
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109 local origin, stanza = event.origin, event.stanza;
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110 local orig_type = stanza.attr.type or "normal";
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111 local orig_to = stanza.attr.to;
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112 local orig_from = stanza.attr.from;
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113
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114 if not orig_from and c2s then
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115 orig_from = origin.full_jid;
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116 end
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117 orig_to = orig_to or orig_from; -- Weird corner cases
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118
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119 -- Don't store messages of these types
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120 if orig_type == "error"
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121 or orig_type == "headline"
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122 or orig_type == "groupchat"
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123 or not stanza:get_child("body") then
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124 return;
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125 -- TODO Maybe headlines should be configurable?
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126 end
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127
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128 local store_user, store_host = jid_split(c2s and orig_from or orig_to);
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129 local target_jid = c2s and orig_to or orig_from;
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130 local target_bare = jid_bare(target_jid);
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131 local _, _, target_resource = jid_split(target_jid);
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132
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133 --local id = uuid();
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134 local when = time_now();
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135 -- And stash it
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136 local ok, err = setsql([[
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137 INSERT INTO `prosodyarchive`
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138 (`host`, `user`, `store`, `when`, `with`, `resource`, `stanza`)
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139 VALUES (?, ?, ?, ?, ?, ?, ?);
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140 ]], store_host, store_user, "message_log", when, target_bare, target_resource, serialize(st.preserialize(stanza)))
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141 if ok then
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142 sql.commit();
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143 else
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144 module:log("error", "SQL error: %s", err);
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145 sql.rollback();
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146 end
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147 end
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148
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149 local function c2s_message_handler(event)
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150 return message_handler(event, true);
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151 end
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152
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153 -- Stanzas sent by local clients
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154 module:hook("pre-message/bare", c2s_message_handler, 2);
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155 module:hook("pre-message/full", c2s_message_handler, 2);
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156 -- Stanszas to local clients
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157 module:hook("message/bare", message_handler, 2);
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158 module:hook("message/full", message_handler, 2);
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159
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160 -- In the telnet console, run:
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161 -- >hosts["this host"].modules.mam_sql.environment.create_sql()
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162 function create_sql()
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163 local stm = getsql[[
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164 CREATE TABLE `prosodyarchive` (
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165 `host` TEXT,
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166 `user` TEXT,
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167 `store` TEXT,
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168 `id` INTEGER PRIMARY KEY AUTOINCREMENT,
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169 `when` INTEGER,
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170 `with` TEXT,
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171 `resource` TEXT,
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172 `stanza` TEXT
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173 );
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174 CREATE INDEX `hus` ON `prosodyarchive` (`host`, `user`, `store`);
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175 CREATE INDEX `with` ON `prosodyarchive` (`with`);
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176 CREATE INDEX `thetime` ON `prosodyarchive` (`when`);
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177 ]];
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178 stm:execute();
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179 sql.commit();
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180 end