--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_mam/mod_mam.lua Fri Jan 06 16:50:12 2012 +0100
@@ -0,0 +1,127 @@
+-- XEP-xxxx: Message Archive Management for Prosody
+-- Copyright (C) 2011-2012 Kim Alvefur
+--
+-- This file is MIT/X11 licensed.
+--
+-- Based on MAM ProtoXEP Version 0.1 (2010-07-01)
+
+local st = require "util.stanza";
+local jid_bare = require "util.jid".bare;
+local jid_split = require "util.jid".split;
+local xmlns_mam = "urn:xmpp:mam:tmp";
+local xmlns_delay = "urn:xmpp:delay";
+local xmlns_forward = "urn:xmpp:forward:0";
+local host_sessions = hosts[module.host].sessions;
+local dm_list_load = require "util.datamanager".list_load
+local dm_list_append = require "util.datamanager".list_append
+local time_now = os.time;
+local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse;
+local uuid = require "util.uuid".generate;
+
+-- TODO This, and appropritate filtering in message_handler()
+module:hook("iq/self/"..xmlns_mam..":prefs", function(event)
+ local origin, stanza = event.origin, event.stanza;
+ if stanza.attr.type == "get" then
+ -- Not implemented yet, hardcoded to store everything.
+ origin.send(st.reply(stanza)
+ :tag("prefs", { xmlns = xmlns_mam, default = "always" }));
+ return true
+ else -- type == "set"
+ -- TODO
+ end
+end);
+
+module:hook("iq/self/"..xmlns_mam..":query", function(event)
+ local origin, stanza = event.origin, event.stanza;
+ local query = stanza.tags[1];
+ if stanza.attr.type == "get" then
+ local qid = query.attr.queryid;
+
+ -- Search query parameters
+ local qwith = query:get_child_text("with");
+ local qstart = query:get_child_text("start");
+ local qend = query:get_child_text("end");
+ module:log("debug", "Archive query, id %s with %s from %s until %s)",
+ tostring(qid), qwith or "anyone", qstart or "the dawn of time", qend or "now");
+
+ local qwith = qwith and jid_bare(qwith); -- FIXME Later, full vs bare query.
+ qstart, qend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend))
+
+ -- Load all the data!
+ local data, err = dm_list_load(origin.username, origin.host, "archive2"); --FIXME Decide storage name. achive2, [sm]am, archive_ng, for_fra_and_nsa
+ module:log("debug", "Loaded %d items, about to filter", #(data or {}));
+ for i=1,#data do
+ local item = data[i];
+ local when, with = item.when, item.with_bare;
+ local ts = item.timestamp;
+ -- FIXME Premature optimization: Bare JIDs only
+ --module:log("debug", "message with %s when %s", with, when or "???");
+ -- Apply query filter
+ if (not qwith or qwith == with)
+ and (not qstart or when >= qstart)
+ and (not qend or when <= qend) then
+ -- Optimizable? Do this when archiving?
+ --module:log("debug", "sending");
+ local fwd_st = st.message{ to = origin.full_jid }
+ :tag("result", { xmlns = xmlns_mam, queryid = qid }):up()
+ :tag("forwarded", { xmlns = xmlns_forward })
+ :tag("delay", { xmlns = xmlns_delay, stamp = ts or timestamp(when) }):up();
+ local orig_stanza = st.deserialize(item.stanza);
+ orig_stanza.attr.xmlns = "jabber:client";
+ fwd_st:add_child(orig_stanza);
+ origin.send(fwd_st);
+ end
+ end
+ -- That's all folks!
+ module:log("debug", "Archive query %s completed", tostring(qid));
+ origin.send(st.reply(stanza));
+ return true
+ end
+end);
+
+local function message_handler(event, c2s)
+ local origin, stanza = event.origin, event.stanza;
+ local orig_type = stanza.attr.type or "normal";
+ local orig_to = stanza.attr.to;
+ local orig_from = stanza.attr.from;
+
+ if not orig_from and c2s then
+ orig_from = origin.full_jid;
+ end
+
+ -- Don't store messages of these types
+ if orig_type == "error"
+ or orig_type == "headline"
+ or orig_type == "groupchat" then
+ return;
+ -- TODO Maybe headlines should be configurable?
+ -- TODO Write a mod_mam_muc for groupchat messages.
+ end
+
+ -- Stamp "We archived this" on the message
+ stanza:tag("archived", { xmlns = xmlns_mam, by = module.host, id = uuid() });
+ local store_user, store_host = jid_split(c2s and orig_from or orig_to);
+
+ local when = time_now();
+ -- And stash it
+ dm_list_append(store_user, store_host, "archive2", {
+ when = when, -- This might be an UNIX timestamp. Probably.
+ timestamp = timestamp(when), -- Textual timestamp. But I'll assume that comparing numbers is faster and less annoying in case of timezones.
+ with = c2s and orig_to or orig_from,
+ with_bare = jid_bare(c2s and orig_to or orig_from), -- Premature optimization, to avoid loads of jid_bare() calls when filtering.
+ stanza = st.preserialize(stanza)
+ });
+end
+
+local function c2s_message_handler(event)
+ return message_handler(event, true);
+end
+
+-- Stanzas sent by local clients
+module:hook("pre-message/bare", c2s_message_handler, 1);
+module:hook("pre-message/full", c2s_message_handler, 1);
+-- Stanszas to local clients
+module:hook("message/bare", message_handler, 1);
+module:hook("message/full", message_handler, 1);
+
+module:add_feature(xmlns_mam);