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comparison mod_mam_muc_sql/mod_mam_muc_sql.lua @ 821:87e847280aef

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mod_mam_muc_sql: SQL variant of mod_mam_muc
author Kim Alvefur <zash@zash.se>
date Mon, 17 Sep 2012 20:15:27 +0200
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children 7dbde05b48a9
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820:005037032d65 821:87e847280aef
1 -- XEP-0313: Message Archive Management for Prosody
2 -- Copyright (C) 2011-2012 Kim Alvefur
3 --
4 -- This file is MIT/X11 licensed.
5
6 local xmlns_mam = "urn:xmpp:mam:tmp";
7 local xmlns_delay = "urn:xmpp:delay";
8 local xmlns_forward = "urn:xmpp:forward:0";
9
10 local st = require "util.stanza";
11 local rsm = module:require "mod_mam/rsm";
12 local jid_bare = require "util.jid".bare;
13 local jid_split = require "util.jid".split;
14 local jid_prep = require "util.jid".prep;
15 local host = module.host;
16
17 local serialize, deserialize = require"util.json".encode, require"util.json".decode;
18 local unpack = unpack;
19 local tostring = tostring;
20 local time_now = os.time;
21 local t_insert = table.insert;
22 local m_min = math.min;
23 local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse;
24 local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50);
25 --local rooms_to_archive = module:get_option_set("rooms_to_archive",{});
26
27 local sql, setsql, getsql = {};
28 do -- SQL stuff
29 local dburi;
30 local connection;
31 local connections = module:shared "/*/sql/connection-cache";
32 local build_url = require"socket.url".build;
33 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
34 local params = module:get_option("mam_sql", module:get_option("sql"));
35
36 local function db2uri(params)
37 return build_url{
38 scheme = params.driver,
39 user = params.username,
40 password = params.password,
41 host = params.host,
42 port = params.port,
43 path = params.database,
44 };
45 end
46
47 local function test_connection()
48 if not connection then return nil; end
49 if connection:ping() then
50 return true;
51 else
52 module:log("debug", "Database connection closed");
53 connection = nil;
54 connections[dburi] = nil;
55 end
56 end
57 local function connect()
58 if not test_connection() then
59 prosody.unlock_globals();
60 local dbh, err = DBI.Connect(
61 params.driver, params.database,
62 params.username, params.password,
63 params.host, params.port
64 );
65 prosody.lock_globals();
66 if not dbh then
67 module:log("debug", "Database connection failed: %s", tostring(err));
68 return nil, err;
69 end
70 module:log("debug", "Successfully connected to database");
71 dbh:autocommit(false); -- don't commit automatically
72 connection = dbh;
73
74 connections[dburi] = dbh;
75 end
76 return connection;
77 end
78
79 do -- process options to get a db connection
80 local ok;
81 prosody.unlock_globals();
82 ok, DBI = pcall(require, "DBI");
83 if not ok then
84 package.loaded["DBI"] = {};
85 module:log("error", "Failed to load the LuaDBI library for accessing SQL databases: %s", DBI);
86 module:log("error", "More information on installing LuaDBI can be found at http://prosody.im/doc/depends#luadbi");
87 end
88 prosody.lock_globals();
89 if not ok or not DBI.Connect then
90 return; -- Halt loading of this module
91 end
92
93 params = params or { driver = "SQLite3" };
94
95 if params.driver == "SQLite3" then
96 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
97 end
98
99 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
100
101 dburi = db2uri(params);
102 connection = connections[dburi];
103
104 assert(connect());
105
106 end
107
108 function getsql(sql, ...)
109 if params.driver == "PostgreSQL" then
110 sql = sql:gsub("`", "\"");
111 end
112 -- do prepared statement stuff
113 local stmt, err = connection:prepare(sql);
114 if not stmt and not test_connection() then error("connection failed"); end
115 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
116 -- run query
117 local ok, err = stmt:execute(...);
118 if not ok and not test_connection() then error("connection failed"); end
119 if not ok then return nil, err; end
120
121 return stmt;
122 end
123 function setsql(sql, ...)
124 local stmt, err = getsql(sql, ...);
125 if not stmt then return stmt, err; end
126 return stmt:affected();
127 end
128 function sql.rollback(...)
129 if connection then connection:rollback(); end -- FIXME check for rollback error?
130 return ...;
131 end
132 function sql.commit(...)
133 if not connection:commit() then return nil, "SQL commit failed"; end
134 return ...;
135 end
136
137 end
138
139 local archive_store = "archive2";
140
141 -- Handle archive queries
142 module:hook("iq/bare/"..xmlns_mam..":query", function(event)
143 local origin, stanza = event.origin, event.stanza;
144 local room = jid_split(stanza.attr.to);
145 local query = stanza.tags[1];
146
147 local room_obj = hosts[module.host].modules.muc.rooms[jid_bare(stanza.attr.to)];
148 if not room_obj then
149 return -- FIXME not found
150 end
151 local from = jid_bare(stanza.attr.from);
152
153 if room_obj._affiliations[from] == "outcast"
154 or room_obj._data.members_only and not room_obj._affiliations[from] then
155 return -- FIXME unauth
156 end
157
158 if stanza.attr.type == "get" then
159 local qid = query.attr.queryid;
160
161 -- Search query parameters
162 local qwith = query:get_child_text("with");
163 local qstart = query:get_child_text("start");
164 local qend = query:get_child_text("end");
165 local qset = rsm.get(query);
166 module:log("debug", "Archive query, id %s with %s from %s until %s)",
167 tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now");
168
169 if qstart or qend then -- Validate timestamps
170 local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend))
171 if (qstart and not vstart) or (qend and not vend) then
172 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp"))
173 return true
174 end
175 qstart, qend = vstart, vend;
176 end
177
178 local qres;
179 if qwith then -- Validate the 'with' jid
180 local pwith = qwith and jid_prep(qwith);
181 if pwith and not qwith then -- it failed prepping
182 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID"))
183 return true
184 end
185 local _, _, resource = jid_split(qwith);
186 qwith = jid_bare(pwith);
187 qres = resource;
188 end
189
190 -- RSM stuff
191 local qmax = m_min(qset and qset.max or default_max_items, max_max_items);
192 local first, last;
193 local n = 0;
194
195 local sql_query = ([[
196 SELECT `id`, `when`, `stanza`
197 FROM `prosodyarchive`
198 WHERE `host` = ? AND `user` = ? AND `store` = ?
199 AND `when` BETWEEN ? AND ?
200 %s
201 AND `id` > ?
202 LIMIT ?;
203 ]]):format(qres and [[AND `resource` = ?]] or "")
204
205 local p = {
206 host, room, archive_store,
207 qstart or 0, qend or time_now(),
208 qset and tonumber(qset.after) or 0,
209 qmax
210 };
211 if qres then
212 t_insert(p, 6, qres);
213 end
214 module:log("debug", "getsql(sql_query, "..table.concat(p, ", "));
215 local data, err = getsql(sql_query, unpack(p));
216 if not data then
217 origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error loading archive: "..tostring(err)));
218 return true
219 end
220
221 for item in data:rows() do
222 local id, when, orig_stanza = unpack(item);
223 --module:log("debug", "id is %s", id);
224
225 local fwd_st = st.message{ to = stanza.attr.from, from = stanza.attr.to }
226 :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }):up()
227 :tag("forwarded", { xmlns = xmlns_forward })
228 :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up();
229 orig_stanza = st.deserialize(deserialize(orig_stanza));
230 orig_stanza.attr.xmlns = "jabber:client";
231 fwd_st:add_child(orig_stanza);
232 origin.send(fwd_st);
233 last = id;
234 n = n + 1;
235 if not first then
236 first = id;
237 end
238 end
239 -- That's all folks!
240 module:log("debug", "Archive query %s completed", tostring(qid));
241
242 local reply = st.reply(stanza);
243 if last then
244 -- This is a bit redundant, isn't it?
245 reply:query(xmlns_mam):add_child(rsm.generate{first = first, last = last, count = n});
246 end
247 origin.send(reply);
248 return true
249 end
250 end);
251
252 -- Handle messages
253 local function message_handler(event)
254 local origin, stanza = event.origin, event.stanza;
255 local orig_type = stanza.attr.type or "normal";
256 local orig_to = stanza.attr.to;
257 local orig_from = stanza.attr.from;
258
259 -- Still needed?
260 if not orig_from then
261 orig_from = origin.full_jid;
262 end
263
264 -- Only store groupchat messages
265 if not (orig_type == "groupchat" and (stanza:get_child("body") or stanza:get_child("subject"))) then
266 return;
267 end
268
269 local room = jid_split(orig_to);
270 local room_obj = hosts[host].modules.muc.rooms[orig_to]
271 if not room_obj then return end
272
273 local when = time_now();
274 local stanza = st.clone(stanza); -- Private copy
275 --stanza.attr.to = nil;
276 local nick = room_obj._jid_nick[orig_from];
277 if not nick then return end
278 stanza.attr.from = nick;
279 local _, _, nick = jid_split(nick);
280 -- And stash it
281 local ok, err = setsql([[
282 INSERT INTO `prosodyarchive`
283 (`host`, `user`, `store`, `when`, `resource`, `stanza`)
284 VALUES (?, ?, ?, ?, ?, ?);
285 ]], host, room, archive_store, when, nick, serialize(st.preserialize(stanza)))
286 if ok then
287 sql.commit();
288 else
289 module:log("error", "SQL error: %s", err);
290 sql.rollback();
291 end
292 --[[ This was dropped from the spec
293 if ok then
294 stanza:tag("archived", { xmlns = xmlns_mam, by = host, id = id }):up();
295 end
296 --]]
297 end
298
299 module:hook("message/bare", message_handler, 2);
300
301 module:add_feature(xmlns_mam);