1 files changed, 317 insertions, 0 deletions
diff --git a/plugins/mod_pubsub/pubsub.lib.lua b/plugins/mod_pubsub/pubsub.lib.lua
new file mode 100644
index 00000000..1497c21c
--- /dev/null
+++ b/plugins/mod_pubsub/pubsub.lib.lua
@@ -0,0 +1,317 @@
+local st = require "util.stanza";
+local uuid_generate = require "util.uuid".generate;
+local dataform = require"util.dataforms".new;
+
+local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
+local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
+local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
+
+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"] = { "auth", "forbidden" };
+	["not-allowed"] = { "cancel", "not-allowed" };
+};
+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;
+
+local node_config_form = require"util.dataforms".new {
+	{
+		type = "hidden";
+		name = "FORM_TYPE";
+		value = "http://jabber.org/protocol/pubsub#node_config";
+	};
+	{
+		type = "text-single";
+		name = "pubsub#max_items";
+		label = "Max # of items to persist";
+	};
+};
+
+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
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	end
+	local ok, results = service:get_items(node, stanza.attr.from, id);
+	if not ok then
+		origin.send(pubsub_error_reply(stanza, results));
+		return true;
+	end
+
+	local data = st.stanza("items", { node = node });
+	for _, id in ipairs(results) do
+		data:add_child(results[id]);
+	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
+	origin.send(reply);
+	return true;
+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
+		origin.send(pubsub_error_reply(stanza, ret));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+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
+	origin.send(reply);
+	return true;
+end
+
+function handlers.set_delete(origin, stanza, delete, service)
+	local node = delete.attr.node;
+
+	local reply, notifier;
+	if not node then
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+end
+
+function handlers.set_subscribe(origin, stanza, subscribe, service)
+	local node, jid = subscribe.attr.node, subscribe.attr.jid;
+	if not (node and jid) then
+		origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
+		return true;
+	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
+		origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+end
+
+function handlers.set_publish(origin, stanza, publish, service)
+	local node = publish.attr.node;
+	if not node then
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+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
+		origin.send(pubsub_error_reply(stanza, node and "item-not-found" or "nodeid-required"));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+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
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	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
+	origin.send(reply);
+	return true;
+end
+
+function handlers.get_configure(origin, stanza, config, service)
+	local node = config.attr.node;
+	if not node then
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	end
+
+	if not service:may(node, stanza.attr.from, "configure") then
+		origin.send(pubsub_error_reply(stanza, "forbidden"));
+		return true;
+	end
+
+	local node_obj = service.nodes[node];
+	if not node_obj then
+		origin.send(pubsub_error_reply(stanza, "item-not-found"));
+		return true;
+	end
+
+	local reply = st.reply(stanza)
+		:tag("pubsub", { xmlns = xmlns_pubsub_owner })
+			:tag("configure", { node = node })
+				:add_child(node_config_form:form(node_obj.config));
+	origin.send(reply);
+	return true;
+end
+
+function handlers.set_configure(origin, stanza, config, service)
+	local node = config.attr.node;
+	if not node then
+		origin.send(pubsub_error_reply(stanza, "nodeid-required"));
+		return true;
+	end
+	if not service:may(node, stanza.attr.from, "configure") then
+		origin.send(pubsub_error_reply(stanza, "forbidden"));
+		return true;
+	end
+	local new_config, err = node_config_form:data(config.tags[1]);
+	if not new_config then
+		origin.send(st.error_reply(stanza, "modify", "bad-request", err));
+		return true;
+	end
+	local ok, err = service:set_node_config(node, stanza.attr.from, new_config);
+	if not ok then
+		origin.send(pubsub_error_reply(stanza, err));
+		return true;
+	end
+	origin.send(st.reply(stanza));
+	return true;
+end
+
+function handlers.get_default(origin, stanza, default, service)
+	local reply = st.reply(stanza)
+		:tag("pubsub", { xmlns = xmlns_pubsub_owner })
+			:tag("default")
+				:add_child(node_config_form:form(service.node_defaults));
+	origin.send(reply);
+	return true;
+end
+
+return _M;