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local st = require "util.stanza";
local uuid_generate = require "util.uuid".generate;
local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
local _M = {};
local handlers = {};
_M.handlers = handlers;
local pubsub_errors = {
["conflict"] = { "cancel", "conflict" };
["invalid-jid"] = { "modify", "bad-request", nil, "invalid-jid" };
["jid-required"] = { "modify", "bad-request", nil, "jid-required" };
["nodeid-required"] = { "modify", "bad-request", nil, "nodeid-required" };
["item-not-found"] = { "cancel", "item-not-found" };
["not-subscribed"] = { "modify", "unexpected-request", nil, "not-subscribed" };
["forbidden"] = { "cancel", "forbidden" };
};
local function pubsub_error_reply(stanza, error)
local e = pubsub_errors[error];
local reply = st.error_reply(stanza, unpack(e, 1, 3));
if e[4] then
reply:tag(e[4], { xmlns = xmlns_pubsub_errors }):up();
end
return reply;
end
_M.pubsub_error_reply = pubsub_error_reply;
function handlers.get_items(origin, stanza, items, service)
local node = items.attr.node;
local item = items:get_child("item");
local id = item and item.attr.id;
if not node then
return origin.send(pubsub_error_reply(stanza, "nodeid-required"));
end
local ok, results = service:get_items(node, stanza.attr.from, id);
if not ok then
return origin.send(pubsub_error_reply(stanza, results));
end
local data = st.stanza("items", { node = node });
for _, entry in pairs(results) do
data:add_child(entry);
end
local reply;
if data then
reply = st.reply(stanza)
:tag("pubsub", { xmlns = xmlns_pubsub })
:add_child(data);
else
reply = pubsub_error_reply(stanza, "item-not-found");
end
return origin.send(reply);
end
function handlers.get_subscriptions(origin, stanza, subscriptions, service)
local node = subscriptions.attr.node;
local ok, ret = service:get_subscriptions(node, stanza.attr.from, stanza.attr.from);
if not ok then
return origin.send(pubsub_error_reply(stanza, ret));
end
local reply = st.reply(stanza)
:tag("pubsub", { xmlns = xmlns_pubsub })
:tag("subscriptions");
for _, sub in ipairs(ret) do
reply:tag("subscription", { node = sub.node, jid = sub.jid, subscription = 'subscribed' }):up();
end
return origin.send(reply);
end
function handlers.set_create(origin, stanza, create, service)
local node = create.attr.node;
local ok, ret, reply;
if node then
ok, ret = service:create(node, stanza.attr.from);
if ok then
reply = st.reply(stanza);
else
reply = pubsub_error_reply(stanza, ret);
end
else
repeat
node = uuid_generate();
ok, ret = service:create(node, stanza.attr.from);
until ok or ret ~= "conflict";
if ok then
reply = st.reply(stanza)
:tag("pubsub", { xmlns = xmlns_pubsub })
:tag("create", { node = node });
else
reply = pubsub_error_reply(stanza, ret);
end
end
return origin.send(reply);
end
function handlers.set_delete(origin, stanza, delete, service)
local node = delete.attr.node;
local reply, notifier;
if not node then
return origin.send(pubsub_error_reply(stanza, "nodeid-required"));
end
local ok, ret = service:delete(node, stanza.attr.from);
if ok then
reply = st.reply(stanza);
else
reply = pubsub_error_reply(stanza, ret);
end
return origin.send(reply);
end
function handlers.set_subscribe(origin, stanza, subscribe, service)
local node, jid = subscribe.attr.node, subscribe.attr.jid;
if not (node and jid) then
return origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
end
--[[
local options_tag, options = stanza.tags[1]:get_child("options"), nil;
if options_tag then
options = options_form:data(options_tag.tags[1]);
end
--]]
local options_tag, options; -- FIXME
local ok, ret = service:add_subscription(node, stanza.attr.from, jid, options);
local reply;
if ok then
reply = st.reply(stanza)
:tag("pubsub", { xmlns = xmlns_pubsub })
:tag("subscription", {
node = node,
jid = jid,
subscription = "subscribed"
}):up();
if options_tag then
reply:add_child(options_tag);
end
else
reply = pubsub_error_reply(stanza, ret);
end
origin.send(reply);
end
function handlers.set_unsubscribe(origin, stanza, unsubscribe, service)
local node, jid = unsubscribe.attr.node, unsubscribe.attr.jid;
if not (node and jid) then
return origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
end
local ok, ret = service:remove_subscription(node, stanza.attr.from, jid);
local reply;
if ok then
reply = st.reply(stanza);
else
reply = pubsub_error_reply(stanza, ret);
end
return origin.send(reply);
end
function handlers.set_publish(origin, stanza, publish, service)
local node = publish.attr.node;
if not node then
return origin.send(pubsub_error_reply(stanza, "nodeid-required"));
end
local item = publish:get_child("item");
local id = (item and item.attr.id);
if not id then
id = uuid_generate();
if item then
item.attr.id = id;
end
end
local ok, ret = service:publish(node, stanza.attr.from, id, item);
local reply;
if ok then
reply = st.reply(stanza)
:tag("pubsub", { xmlns = xmlns_pubsub })
:tag("publish", { node = node })
:tag("item", { id = id });
else
reply = pubsub_error_reply(stanza, ret);
end
return origin.send(reply);
end
function handlers.set_retract(origin, stanza, retract, service)
local node, notify = retract.attr.node, retract.attr.notify;
notify = (notify == "1") or (notify == "true");
local item = retract:get_child("item");
local id = item and item.attr.id
if not (node and id) then
return origin.send(pubsub_error_reply(stanza, node and "item-not-found" or "nodeid-required"));
end
local reply, notifier;
if notify then
notifier = st.stanza("retract", { id = id });
end
local ok, ret = service:retract(node, stanza.attr.from, id, notifier);
if ok then
reply = st.reply(stanza);
else
reply = pubsub_error_reply(stanza, ret);
end
return origin.send(reply);
end
function handlers.set_purge(origin, stanza, purge, service)
local node, notify = purge.attr.node, purge.attr.notify;
notify = (notify == "1") or (notify == "true");
local reply;
if not node then
return origin.send(pubsub_error_reply(stanza, "nodeid-required"));
end
local ok, ret = service:purge(node, stanza.attr.from, notify);
if ok then
reply = st.reply(stanza);
else
reply = pubsub_error_reply(stanza, ret);
end
return origin.send(reply);
end
return _M;
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