--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_groups_muc_bookmarks/mod_groups_muc_bookmarks.lua Wed Feb 03 18:03:12 2021 +0100
@@ -0,0 +1,132 @@
+local jid_split = require "util.jid".split;
+
+local st = require "util.stanza";
+
+local mod_groups = module:depends("groups_internal")
+local mod_pep = module:depends("pep")
+
+local PUBSUB_NODE_XEP0048 = "storage:bookmarks";
+local XMLNS_XEP0048 = "storage:bookmarks";
+local XMLNS_XEP0060 = "http://jabber.org/protocol/pubsub";
+
+local default_options = {
+ ["persist_items"] = true;
+ ["access_model"] = "whitelist";
+};
+
+local function get_current_bookmarks(jid, service)
+ local ok, id, item = service:get_last_item(PUBSUB_NODE_XEP0048, jid)
+ if not ok or id == nil then
+ if id == "item-not-found" or id == nil then
+ -- return empty
+ return st.stanza("storage", { xmlns = XMLNS_XEP0048 });
+ end
+ return nil, result
+ end
+ -- first item is the actual storage element
+ local hit = item:get_child("storage", XMLNS_XEP0048);
+ if not hit then
+ return nil, "internal-server-error"
+ end
+ return hit
+end
+
+local function update_bookmarks(jid, service, storage)
+ local item = st.stanza("item", { xmlns = XMLNS_XEP0060, id = "current" }):add_child(storage)
+ module:log("debug", "updating bookmarks with %q", item)
+ local ok, err = service:publish(
+ PUBSUB_NODE_XEP0048,
+ jid,
+ "current",
+ item,
+ default_options
+ )
+ if not ok then
+ module:log("error", "failed to update bookmarks: %s", err)
+ end
+end
+
+local function find_matching_bookmark(storage, room)
+ for node in storage:childtags("conference") do
+ if node.attr.jid == room then
+ return node
+ end
+ end
+ return nil
+end
+
+local function inject_bookmark(jid, room, autojoin, name)
+ local pep_service = mod_pep.get_pep_service(jid_split(jid))
+
+ autojoin = autojoin or false and true
+ local current = get_current_bookmarks(jid, pep_service)
+ local existing = find_matching_bookmark(current, room)
+ if existing then
+ if autojoin ~= nil then
+ existing.attr.autojoin = autojoin and "true" or "false"
+ end
+ if name ~= nil then
+ -- do not change already configured names
+ if not existing.attr.name then
+ existing.attr.name = name
+ end
+ end
+ done = true
+ module:log("debug", "found existing matching bookmark, updated")
+ else
+ module:log("debug", "no existing bookmark found, adding new")
+ current:tag("conference", {
+ name = name,
+ autojoin = autojoin and "true" or "false",
+ jid = room,
+ xmlns = XMLNS_XEP0048,
+ })
+ end
+
+ update_bookmarks(jid, pep_service, current)
+end
+
+local function remove_bookmark(jid, room, autojoin, name)
+ local pep_service = mod_pep.get_pep_service(jid_split(jid))
+
+ autojoin = autojoin or false and true
+ local current = get_current_bookmarks(jid, pep_service)
+ current:maptags(function (node)
+ if node.attr.xmlns and node.attr.xmlns ~= XMLNS_XEP0048 then
+ return node
+ end
+ if node.name ~= "conference" then
+ return node
+ end
+ if node.attr.jid == room then
+ -- remove matching bookmark
+ return nil
+ end
+ return node
+ end)
+
+ update_bookmarks(jid, pep_service, current)
+end
+
+local function handle_user_added(event)
+ if not event.group_info.muc_jid then
+ module:log("debug", "ignoring user added event on group %s because it has no MUC", event.id)
+ return
+ end
+ local jid = event.user .. "@" .. event.host
+ inject_bookmark(jid, event.group_info.muc_jid, true, event.group_info.name)
+end
+
+local function handle_user_removed(event)
+ if not event.group_info.muc_jid then
+ module:log("debug", "ignoring user removed event on group %s because it has no MUC", event.id)
+ return
+ end
+ -- Removing the bookmark is fine as the user just lost any privilege to
+ -- be in the MUC (as group MUCs are members-only).
+ local jid = event.user .. "@" .. event.host
+ remove_bookmark(jid, event.group_info.muc_jid, true, event.group_info.name)
+end
+
+module:hook("group-user-added", handle_user_added)
+module:hook("group-user-removed", handle_user_removed)