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-rw-r--r--plugins/mod_pubsub/pubsub.lib.lua225
1 files changed, 225 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..2b015e34
--- /dev/null
+++ b/plugins/mod_pubsub/pubsub.lib.lua
@@ -0,0 +1,225 @@
+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;