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512 lines
14 KiB
512 lines
14 KiB
local t_unpack = table.unpack or unpack; -- luacheck: ignore 113
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local time_now = os.time;
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local set = require "util.set";
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local st = require "util.stanza";
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local it = require "util.iterators";
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local uuid_generate = require "util.uuid".generate;
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local dataform = require"util.dataforms".new;
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local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
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local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
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local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
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local _M = {};
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local handlers = {};
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_M.handlers = handlers;
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local pubsub_errors = {
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["conflict"] = { "cancel", "conflict" };
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["invalid-jid"] = { "modify", "bad-request", nil, "invalid-jid" };
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["jid-required"] = { "modify", "bad-request", nil, "jid-required" };
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["nodeid-required"] = { "modify", "bad-request", nil, "nodeid-required" };
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["item-not-found"] = { "cancel", "item-not-found" };
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["not-subscribed"] = { "modify", "unexpected-request", nil, "not-subscribed" };
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["forbidden"] = { "auth", "forbidden" };
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["not-allowed"] = { "cancel", "not-allowed" };
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};
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local function pubsub_error_reply(stanza, error)
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local e = pubsub_errors[error];
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local reply = st.error_reply(stanza, t_unpack(e, 1, 3));
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if e[4] then
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reply:tag(e[4], { xmlns = xmlns_pubsub_errors }):up();
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end
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return reply;
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end
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_M.pubsub_error_reply = pubsub_error_reply;
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local node_config_form = dataform {
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{
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type = "hidden";
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name = "FORM_TYPE";
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value = "http://jabber.org/protocol/pubsub#node_config";
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};
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{
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type = "text-single";
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name = "pubsub#max_items";
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label = "Max # of items to persist";
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};
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{
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type = "boolean";
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name = "pubsub#persist_items";
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label = "Persist items to storage";
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};
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};
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local service_method_feature_map = {
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add_subscription = { "subscribe" };
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create = { "create-nodes", "instant-nodes", "item-ids", "create-and-configure" };
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delete = { "delete-nodes" };
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get_items = { "retrieve-items" };
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get_subscriptions = { "retrieve-subscriptions" };
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node_defaults = { "retrieve-default" };
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publish = { "publish" };
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purge = { "purge-nodes" };
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retract = { "delete-items", "retract-items" };
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set_node_config = { "config-node" };
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};
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local service_config_feature_map = {
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autocreate_on_publish = { "auto-create" };
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};
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function _M.get_feature_set(service)
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local supported_features = set.new();
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for method, features in pairs(service_method_feature_map) do
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if service[method] then
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for _, feature in ipairs(features) do
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if feature then
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supported_features:add(feature);
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end
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end
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end
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end
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for option, features in pairs(service_config_feature_map) do
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if service.config[option] then
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for _, feature in ipairs(features) do
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if feature then
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supported_features:add(feature);
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end
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end
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end
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end
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for affiliation in pairs(service.config.capabilities) do
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if affiliation ~= "none" and affiliation ~= "owner" then
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supported_features:add(affiliation.."-affiliation");
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end
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end
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return supported_features;
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end
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function _M.handle_pubsub_iq(event, service)
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local origin, stanza = event.origin, event.stanza;
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local pubsub_tag = stanza.tags[1];
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local action = pubsub_tag.tags[1];
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if not action then
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return origin.send(st.error_reply(stanza, "cancel", "bad-request"));
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end
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local prefix = "";
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if pubsub_tag.attr.xmlns == xmlns_pubsub_owner then
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prefix = "owner_";
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end
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local handler = handlers[prefix..stanza.attr.type.."_"..action.name];
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if handler then
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handler(origin, stanza, action, service);
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return true;
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end
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end
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function handlers.get_items(origin, stanza, items, service)
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local node = items.attr.node;
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local item = items:get_child("item");
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local item_id = item and item.attr.id;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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local ok, results = service:get_items(node, stanza.attr.from, item_id);
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if not ok then
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origin.send(pubsub_error_reply(stanza, results));
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return true;
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end
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local data = st.stanza("items", { node = node });
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for _, id in ipairs(results) do
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data:add_child(results[id]);
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end
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local reply;
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if data then
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reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub })
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:add_child(data);
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else
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reply = pubsub_error_reply(stanza, "item-not-found");
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end
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origin.send(reply);
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return true;
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end
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function handlers.get_subscriptions(origin, stanza, subscriptions, service)
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local node = subscriptions.attr.node;
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local ok, ret = service:get_subscriptions(node, stanza.attr.from, stanza.attr.from);
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if not ok then
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origin.send(pubsub_error_reply(stanza, ret));
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return true;
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end
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local reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub })
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:tag("subscriptions");
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for _, sub in ipairs(ret) do
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reply:tag("subscription", { node = sub.node, jid = sub.jid, subscription = 'subscribed' }):up();
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end
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origin.send(reply);
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return true;
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end
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function handlers.set_create(origin, stanza, create, service)
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local node = create.attr.node;
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local ok, ret, reply;
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local config;
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local configure = stanza.tags[1]:get_child("configure");
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if configure then
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local config_form = configure:get_child("x", "jabber:x:data");
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if not config_form then
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origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing dataform"));
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return true;
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end
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local form_data, err = node_config_form:data(config_form);
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if not form_data then
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origin.send(st.error_reply(stanza, "modify", "bad-request", err));
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return true;
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end
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config = {
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["max_items"] = tonumber(form_data["pubsub#max_items"]);
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["persist_items"] = form_data["pubsub#persist_items"];
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};
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end
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if node then
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ok, ret = service:create(node, stanza.attr.from, config);
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if ok then
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reply = st.reply(stanza);
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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else
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repeat
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node = uuid_generate();
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ok, ret = service:create(node, stanza.attr.from, config);
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until ok or ret ~= "conflict";
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if ok then
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reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub })
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:tag("create", { node = node });
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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end
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origin.send(reply);
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return true;
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end
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function handlers.owner_set_delete(origin, stanza, delete, service)
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local node = delete.attr.node;
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local reply;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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local ok, ret = service:delete(node, stanza.attr.from);
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if ok then
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reply = st.reply(stanza);
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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return true;
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end
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function handlers.set_subscribe(origin, stanza, subscribe, service)
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local node, jid = subscribe.attr.node, subscribe.attr.jid;
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if not (node and jid) then
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origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
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return true;
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end
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--[[
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local options_tag, options = stanza.tags[1]:get_child("options"), nil;
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if options_tag then
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options = options_form:data(options_tag.tags[1]);
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end
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--]]
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local options_tag, options; -- FIXME
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local ok, ret = service:add_subscription(node, stanza.attr.from, jid, options);
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local reply;
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if ok then
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reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub })
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:tag("subscription", {
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node = node,
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jid = jid,
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subscription = "subscribed"
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}):up();
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if options_tag then
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reply:add_child(options_tag);
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end
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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end
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function handlers.set_unsubscribe(origin, stanza, unsubscribe, service)
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local node, jid = unsubscribe.attr.node, unsubscribe.attr.jid;
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if not (node and jid) then
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origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
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return true;
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end
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local ok, ret = service:remove_subscription(node, stanza.attr.from, jid);
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local reply;
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if ok then
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reply = st.reply(stanza);
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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return true;
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end
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function handlers.set_publish(origin, stanza, publish, service)
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local node = publish.attr.node;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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local item = publish:get_child("item");
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local id = (item and item.attr.id);
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if not id then
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id = uuid_generate();
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if item then
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item.attr.id = id;
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end
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end
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local ok, ret = service:publish(node, stanza.attr.from, id, item);
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local reply;
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if ok then
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if type(ok) == "string" then
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id = ok;
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end
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reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub })
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:tag("publish", { node = node })
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:tag("item", { id = id });
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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return true;
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end
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function handlers.set_retract(origin, stanza, retract, service)
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local node, notify = retract.attr.node, retract.attr.notify;
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notify = (notify == "1") or (notify == "true");
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local item = retract:get_child("item");
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local id = item and item.attr.id
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if not (node and id) then
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origin.send(pubsub_error_reply(stanza, node and "item-not-found" or "nodeid-required"));
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return true;
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end
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local reply, notifier;
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if notify then
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notifier = st.stanza("retract", { id = id });
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end
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local ok, ret = service:retract(node, stanza.attr.from, id, notifier);
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if ok then
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reply = st.reply(stanza);
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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return true;
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end
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function handlers.owner_set_purge(origin, stanza, purge, service)
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local node, notify = purge.attr.node, purge.attr.notify;
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notify = (notify == "1") or (notify == "true");
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local reply;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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local ok, ret = service:purge(node, stanza.attr.from, notify);
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if ok then
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reply = st.reply(stanza);
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else
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reply = pubsub_error_reply(stanza, ret);
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end
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origin.send(reply);
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return true;
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end
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function handlers.owner_get_configure(origin, stanza, config, service)
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local node = config.attr.node;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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if not service:may(node, stanza.attr.from, "configure") then
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origin.send(pubsub_error_reply(stanza, "forbidden"));
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return true;
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end
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local node_obj = service.nodes[node];
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if not node_obj then
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origin.send(pubsub_error_reply(stanza, "item-not-found"));
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return true;
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end
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local node_config = node_obj.config;
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local pubsub_form_data = {
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["pubsub#max_items"] = tostring(node_config["max_items"]);
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["pubsub#persist_items"] = node_config["persist_items"]
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}
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local reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub_owner })
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:tag("configure", { node = node })
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:add_child(node_config_form:form(pubsub_form_data));
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origin.send(reply);
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return true;
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end
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function handlers.owner_set_configure(origin, stanza, config, service)
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local node = config.attr.node;
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if not node then
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origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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return true;
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end
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if not service:may(node, stanza.attr.from, "configure") then
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origin.send(pubsub_error_reply(stanza, "forbidden"));
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return true;
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end
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local config_form = config:get_child("x", "jabber:x:data");
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if not config_form then
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origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing dataform"));
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return true;
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end
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local form_data, err = node_config_form:data(config_form);
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if not form_data then
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origin.send(st.error_reply(stanza, "modify", "bad-request", err));
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return true;
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end
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local new_config = {
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["max_items"] = tonumber(form_data["pubsub#max_items"]);
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["persist_items"] = form_data["pubsub#persist_items"];
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};
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local ok, err = service:set_node_config(node, stanza.attr.from, new_config);
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if not ok then
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origin.send(pubsub_error_reply(stanza, err));
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return true;
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end
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origin.send(st.reply(stanza));
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return true;
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end
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function handlers.owner_get_default(origin, stanza, default, service) -- luacheck: ignore 212/default
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local pubsub_form_data = {
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["pubsub#max_items"] = tostring(service.node_defaults["max_items"]);
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["pubsub#persist_items"] = service.node_defaults["persist_items"]
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}
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local reply = st.reply(stanza)
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:tag("pubsub", { xmlns = xmlns_pubsub_owner })
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:tag("default")
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:add_child(node_config_form:form(pubsub_form_data));
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origin.send(reply);
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return true;
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end
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local function create_encapsulating_item(id, payload)
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local item = st.stanza("item", { id = id, xmlns = xmlns_pubsub });
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item:add_child(payload);
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return item;
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end
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local function archive_itemstore(archive, config, user, node)
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module:log("debug", "Creation of itemstore for node %s with config %s", node, config);
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local get_set = {};
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function get_set:items() -- luacheck: ignore 212/self
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local data, err = archive:find(user, {
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limit = tonumber(config["max_items"]);
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reverse = true;
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});
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if not data then
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module:log("error", "Unable to get items: %s", err);
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return true;
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end
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module:log("debug", "Listed items %s", data);
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return it.reverse(function()
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local id, payload, when, publisher = data();
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if id == nil then
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return;
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end
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local item = create_encapsulating_item(id, payload, publisher);
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return id, item;
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end);
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end
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function get_set:get(key) -- luacheck: ignore 212/self
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local data, err = archive:find(user, {
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key = key;
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-- Get the last item with that key, if the archive doesn't deduplicate
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reverse = true,
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limit = 1;
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});
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if not data then
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module:log("error", "Unable to get item: %s", err);
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return nil, err;
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end
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local id, payload, when, publisher = data();
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module:log("debug", "Get item %s (published at %s by %s)", id, when, publisher);
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if id == nil then
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return nil;
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end
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return create_encapsulating_item(id, payload, publisher);
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end
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function get_set:set(key, value) -- luacheck: ignore 212/self
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local data, err;
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if value ~= nil then
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local publisher = value.attr.publisher;
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local payload = value.tags[1];
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data, err = archive:append(user, key, payload, time_now(), publisher);
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else
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data, err = archive:delete(user, { key = key; });
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end
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if not data then
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module:log("error", "Unable to set item: %s", err);
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return nil, err;
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end
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return data;
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end
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function get_set:clear() -- luacheck: ignore 212/self
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return archive:delete(user);
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end
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function get_set:resize(size)
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return archive:delete(user, {
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truncate = size;
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});
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end
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function get_set:tail()
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-- This should conveniently return the last item
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|
local item = self:get(nil);
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|
if item then
|
|
return item.attr.id, item;
|
|
end
|
|
end
|
|
return setmetatable(get_set, archive);
|
|
end
|
|
_M.archive_itemstore = archive_itemstore;
|
|
|
|
return _M;
|
|
|