mod_pep: Wipe pubsub service on user deletion
Data is already wiped from storage, but this ensures everything is
properly unsubscribed, possibly with notifications etc.
Clears recipient cache as well, since it is no longer relevant.
-- Prosody IM
-- Copyright (C) 2008-2017 Matthew Wild
-- Copyright (C) 2008-2017 Waqas Hussain
-- Copyright (C) 2011-2017 Kim Alvefur
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
-- XEP-0313: Message Archive Management for Prosody
--
local stanza = require"util.stanza".stanza;
local tostring, tonumber = tostring, tonumber;
local type = type;
local pairs = pairs;
local xmlns_rsm = 'http://jabber.org/protocol/rsm';
local element_parsers = {};
do
local parsers = element_parsers;
local function xs_int(st)
return tonumber((st:get_text()));
end
local function xs_string(st)
return st:get_text();
end
parsers.after = xs_string;
parsers.before = function(st)
local text = st:get_text();
return text == "" or text;
end;
parsers.max = xs_int;
parsers.index = xs_int;
parsers.first = function(st)
return { index = tonumber(st.attr.index); st:get_text() };
end;
parsers.last = xs_string;
parsers.count = xs_int;
end
local element_generators = setmetatable({
first = function(st, data)
if type(data) == "table" then
st:tag("first", { index = data.index }):text(data[1]):up();
else
st:tag("first"):text(tostring(data)):up();
end
end;
before = function(st, data)
if data == true then
st:tag("before"):up();
else
st:tag("before"):text(tostring(data)):up();
end
end
}, {
__index = function(_, name)
return function(st, data)
st:tag(name):text(tostring(data)):up();
end
end;
});
local function parse(set)
local rs = {};
for tag in set:childtags() do
local name = tag.name;
local parser = name and element_parsers[name];
if parser then
rs[name] = parser(tag);
end
end
return rs;
end
local function generate(t)
local st = stanza("set", { xmlns = xmlns_rsm });
for k,v in pairs(t) do
if element_parsers[k] then
element_generators[k](st, v);
end
end
return st;
end
local function get(st)
local set = st:get_child("set", xmlns_rsm);
if set and #set.tags > 0 then
return parse(set);
end
end
return { parse = parse, generate = generate, get = get };