-- XEP-0313: Message Archive Management for Prosody -- Copyright (C) 2011-2012 Kim Alvefur -- -- This file is MIT/X11 licensed. local xmlns_mam = "urn:xmpp:mam:tmp"; local xmlns_delay = "urn:xmpp:delay"; local xmlns_forward = "urn:xmpp:forward:0"; local st = require "util.stanza"; local rsm = module:require "rsm"; local prefs = module:require"mamprefs"; local prefsxml = module:require"mamprefsxml"; local set_prefs, get_prefs = prefs.set, prefs.get; local prefs_to_stanza, prefs_from_stanza = prefsxml.tostanza, prefsxml.fromstanza; local jid_bare = require "util.jid".bare; local jid_split = require "util.jid".split; local jid_prep = require "util.jid".prep; local host = module.host; local rm_load_roster = require "core.rostermanager".load_roster; local getmetatable = getmetatable; local function is_stanza(x) return getmetatable(x) == st.stanza_mt; end local tostring = tostring; local time_now = os.time; local m_min = math.min; local timestamp, timestamp_parse = require "util.datetime".datetime, require "util.datetime".parse; local default_max_items, max_max_items = 20, module:get_option_number("max_archive_query_results", 50); local global_default_policy = module:get_option("default_archive_policy", false); -- TODO Should be possible to enforce it too -- For translating preference names from string to boolean and back local default_attrs = { always = true, [true] = "always", never = false, [false] = "never", roster = "roster", } local archive_store = "archive2"; local archive = module:open_store(archive_store, "archive"); -- Handle prefs. module:hook("iq/self/"..xmlns_mam..":prefs", function(event) local origin, stanza = event.origin, event.stanza; local user = origin.username; if stanza.attr.type == "get" then local prefs = prefs_to_stanza(get_prefs(user)); local reply = st.reply(stanza):add_child(prefs); return origin.send(reply); else -- type == "set" local new_prefs = stanza:get_child("prefs", xmlns_mam); local prefs = prefs_from_stanza(new_prefs); local ok, err = set_prefs(user, prefs); if not ok then return origin.send(st.error_reply(stanza, "cancel", "internal-server-error", "Error storing preferences: "..tostring(err))); end return origin.send(st.reply(stanza)); end end); -- Handle archive queries module:hook("iq-get/self/"..xmlns_mam..":query", function(event) local origin, stanza = event.origin, event.stanza; local query = stanza.tags[1]; 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"); if qstart or qend then -- Validate timestamps local vstart, vend = (qstart and timestamp_parse(qstart)), (qend and timestamp_parse(qend)) if (qstart and not vstart) or (qend and not vend) then origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid timestamp")) return true end qstart, qend = vstart, vend; end if qwith then -- Validate the 'with' jid local pwith = qwith and jid_prep(qwith); if pwith and not qwith then -- it failed prepping origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid JID")) return true end qwith = jid_bare(pwith); end -- RSM stuff local qset = rsm.get(query); local qmax = m_min(qset and qset.max or default_max_items, max_max_items); local reverse = qset and qset.before or false; local before, after = qset and qset.before, qset and qset.after; if type(before) ~= "string" then before = nil; end -- Load all the data! local data, err = archive:find(origin.username, { start = qstart; ["end"] = qend; -- Time range with = qwith; limit = qmax; before = before; after = after; reverse = reverse; total = true; }); if not data then return origin.send(st.error_reply(stanza, "cancel", "internal-server-error")); end local count = err; -- Wrap it in stuff and deliver local first, last; for id, item, when in data do local fwd_st = st.message{ to = origin.full_jid } :tag("result", { xmlns = xmlns_mam, queryid = qid, id = id }) :tag("forwarded", { xmlns = xmlns_forward }) :tag("delay", { xmlns = xmlns_delay, stamp = timestamp(when) }):up(); if not is_stanza(item) then item = st.deserialize(item); end item.attr.xmlns = "jabber:client"; fwd_st:add_child(item); if not first then first = id; end last = id; origin.send(fwd_st); end -- That's all folks! module:log("debug", "Archive query %s completed", tostring(qid)); if reverse then first, last = last, first; end return origin.send(st.reply(stanza) :query(xmlns_mam):add_child(rsm.generate { first = first, last = last, count = count })); end); local function has_in_roster(user, who) local roster = rm_load_roster(user, host); module:log("debug", "%s has %s in roster? %s", user, who, roster[who] and "yes" or "no"); return roster[who]; end local function shall_store(user, who) -- TODO Cache this? local prefs = get_prefs(user); local rule = prefs[who]; module:log("debug", "%s's rule for %s is %s", user, who, tostring(rule)) if rule ~= nil then return rule; else -- Below could be done by a metatable local default = prefs[false]; module:log("debug", "%s's default rule is %s", user, tostring(default)) if default == nil then default = global_default_policy; module:log("debug", "Using global default rule, %s", tostring(default)) end if default == "roster" then return has_in_roster(user, who); end return default; end end -- Handle messages local function message_handler(event, c2s) local origin, stanza = event.origin, event.stanza; local orig_type = stanza.attr.type or "normal"; local orig_from = stanza.attr.from; local orig_to = stanza.attr.to or orig_from; -- Stanza without 'to' are treated as if it was to their own bare jid -- Don't store messages of these types if orig_type == "error" or orig_type == "headline" or orig_type == "groupchat" or not stanza:get_child("body") then return; end -- Whos storage do we put it in? local store_user = c2s and origin.username or jid_split(orig_to); -- And who are they chatting with? local with = jid_bare(c2s and orig_to or orig_from); -- Check with the users preferences if shall_store(store_user, with) then module:log("debug", "Archiving stanza: %s", stanza:top_tag()); -- And stash it local ok, id = archive:append(store_user, time_now(), with, stanza); if ok and not c2s then stanza:tag("archived", { xmlns = xmlns_mam, by = store_user.."@"..host, id = id }):up(); end else module:log("debug", "Not archiving stanza: %s", stanza:top_tag()); end 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, 2); module:hook("pre-message/full", c2s_message_handler, 2); -- Stanszas to local clients module:hook("message/bare", message_handler, 2); module:hook("message/full", message_handler, 2); module:add_feature(xmlns_mam);