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-rw-r--r--plugins/mod_pep_plus.lua488
1 files changed, 488 insertions, 0 deletions
diff --git a/plugins/mod_pep_plus.lua b/plugins/mod_pep_plus.lua
new file mode 100644
index 00000000..539fe9af
--- /dev/null
+++ b/plugins/mod_pep_plus.lua
@@ -0,0 +1,488 @@
+local pubsub = require "util.pubsub";
+local jid_bare = require "util.jid".bare;
+local jid_split = require "util.jid".split;
+local jid_join = require "util.jid".join;
+local set_new = require "util.set".new;
+local st = require "util.stanza";
+local calculate_hash = require "util.caps".calculate_hash;
+local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
+local cache = require "util.cache";
+local set = require "util.set";
+
+local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
+local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
+local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
+
+local lib_pubsub = module:require "pubsub";
+
+local empty_set = set_new();
+
+local services = {};
+local recipients = {};
+local hash_map = {};
+
+local host = module.host;
+
+local node_config = module:open_store("pep", "map");
+local known_nodes = module:open_store("pep");
+
+function module.save()
+ return { services = services };
+end
+
+function module.restore(data)
+ services = data.services;
+end
+
+function is_item_stanza(item)
+ return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item";
+end
+
+local function subscription_presence(username, recipient)
+ local user_bare = jid_join(username, host);
+ local recipient_bare = jid_bare(recipient);
+ if (recipient_bare == user_bare) then return true; end
+ return is_contact_subscribed(username, host, recipient_bare);
+end
+
+local function nodestore(username)
+ -- luacheck: ignore 212/self
+ local store = {};
+ function store:get(node)
+ local data, err = node_config:get(username, node)
+ if data == true then
+ -- COMPAT Previously stored only a boolean representing 'persist_items'
+ data = {
+ name = node;
+ config = {};
+ subscribers = {};
+ affiliations = {};
+ };
+ end
+ return data, err;
+ end
+ function store:set(node, data)
+ return node_config:set(username, node, data);
+ end
+ function store:users()
+ return pairs(known_nodes:get(username) or {});
+ end
+ return store;
+end
+
+local function simple_itemstore(username)
+ return function (config, node)
+ if config["persist_items"] then
+ module:log("debug", "Creating new persistent item store for user %s, node %q", username, node);
+ local archive = module:open_store("pep_"..node, "archive");
+ return lib_pubsub.archive_itemstore(archive, config, username, node, false);
+ else
+ module:log("debug", "Creating new ephemeral item store for user %s, node %q", username, node);
+ return cache.new(tonumber(config["max_items"]));
+ end
+ end
+end
+
+local function get_broadcaster(username)
+ local user_bare = jid_join(username, host);
+ local function simple_broadcast(kind, node, jids, item)
+ local message = st.message({ from = user_bare, type = "headline" })
+ :tag("event", { xmlns = xmlns_pubsub_event })
+ :tag(kind, { node = node });
+ if item then
+ item = st.clone(item);
+ item.attr.xmlns = nil; -- Clear the pubsub namespace
+ message:add_child(item);
+ end
+ for jid in pairs(jids) do
+ module:log("debug", "Sending notification to %s from %s: %s", jid, user_bare, tostring(item));
+ message.attr.to = jid;
+ module:send(message);
+ end
+ end
+ return simple_broadcast;
+end
+
+function get_pep_service(username)
+ module:log("debug", "get_pep_service(%q)", username);
+ local user_bare = jid_join(username, host);
+ local service = services[username];
+ if service then
+ return service;
+ end
+ service = pubsub.new({
+ capabilities = {
+ none = {
+ create = false;
+ publish = false;
+ retract = false;
+ get_nodes = false;
+
+ subscribe = false;
+ unsubscribe = false;
+ get_subscription = false;
+ get_subscriptions = false;
+ get_items = false;
+
+ subscribe_other = false;
+ unsubscribe_other = false;
+ get_subscription_other = false;
+ get_subscriptions_other = false;
+
+ be_subscribed = true;
+ be_unsubscribed = true;
+
+ set_affiliation = false;
+ };
+ subscriber = {
+ create = false;
+ publish = false;
+ retract = false;
+ get_nodes = true;
+
+ subscribe = true;
+ unsubscribe = true;
+ get_subscription = true;
+ get_subscriptions = true;
+ get_items = true;
+
+ subscribe_other = false;
+ unsubscribe_other = false;
+ get_subscription_other = false;
+ get_subscriptions_other = false;
+
+ be_subscribed = true;
+ be_unsubscribed = true;
+
+ set_affiliation = false;
+ };
+ publisher = {
+ create = false;
+ publish = true;
+ retract = true;
+ get_nodes = true;
+
+ subscribe = true;
+ unsubscribe = true;
+ get_subscription = true;
+ get_subscriptions = true;
+ get_items = true;
+
+ subscribe_other = false;
+ unsubscribe_other = false;
+ get_subscription_other = false;
+ get_subscriptions_other = false;
+
+ be_subscribed = true;
+ be_unsubscribed = true;
+
+ set_affiliation = false;
+ };
+ owner = {
+ create = true;
+ publish = true;
+ retract = true;
+ delete = true;
+ get_nodes = true;
+ configure = true;
+
+ subscribe = true;
+ unsubscribe = true;
+ get_subscription = true;
+ get_subscriptions = true;
+ get_items = true;
+
+
+ subscribe_other = true;
+ unsubscribe_other = true;
+ get_subscription_other = true;
+ get_subscriptions_other = true;
+
+ be_subscribed = true;
+ be_unsubscribed = true;
+
+ set_affiliation = true;
+ };
+ };
+
+ node_defaults = {
+ ["max_items"] = 1;
+ ["persist_items"] = true;
+ };
+
+ autocreate_on_publish = true;
+ autocreate_on_subscribe = true;
+
+ nodestore = nodestore(username);
+ itemstore = simple_itemstore(username);
+ broadcaster = get_broadcaster(username);
+ itemcheck = is_item_stanza;
+ get_affiliation = function (jid)
+ if jid_bare(jid) == user_bare then
+ return "owner";
+ elseif subscription_presence(username, jid) then
+ return "subscriber";
+ end
+ end;
+
+ normalize_jid = jid_bare;
+ });
+ local nodes, err = known_nodes:get(username);
+ if nodes then
+ module:log("debug", "Restoring nodes for user %s", username);
+ for node in pairs(nodes) do
+ module:log("debug", "Restoring node %q", node);
+ service:create(node, true);
+ end
+ elseif err then
+ module:log("error", "Could not restore nodes for %s: %s", username, err);
+ else
+ module:log("debug", "No known nodes");
+ end
+ services[username] = service;
+ module:add_item("pep-service", { service = service, jid = user_bare });
+ return service;
+end
+
+function handle_pubsub_iq(event)
+ local origin, stanza = event.origin, event.stanza;
+ local service_name = origin.username;
+ if stanza.attr.to ~= nil then
+ service_name = jid_split(stanza.attr.to);
+ end
+ local service = get_pep_service(service_name);
+
+ return lib_pubsub.handle_pubsub_iq(event, service)
+end
+
+module:hook("iq/bare/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
+module:hook("iq/bare/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
+
+module:add_identity("pubsub", "pep", module:get_option_string("name", "Prosody"));
+module:add_feature("http://jabber.org/protocol/pubsub#publish");
+
+local function get_caps_hash_from_presence(stanza, current)
+ local t = stanza.attr.type;
+ if not t then
+ local child = stanza:get_child("c", "http://jabber.org/protocol/caps");
+ if child then
+ local attr = child.attr;
+ if attr.hash then -- new caps
+ if attr.hash == 'sha-1' and attr.node and attr.ver then
+ return attr.ver, attr.node.."#"..attr.ver;
+ end
+ else -- legacy caps
+ if attr.node and attr.ver then
+ return attr.node.."#"..attr.ver.."#"..(attr.ext or ""), attr.node.."#"..attr.ver;
+ end
+ end
+ end
+ return; -- no or bad caps
+ elseif t == "unavailable" or t == "error" then
+ return;
+ end
+ return current; -- no caps, could mean caps optimization, so return current
+end
+
+local function resend_last_item(jid, node, service)
+ local ok, id, item = service:get_last_item(node, jid);
+ if not ok then return; end
+ if not id then return; end
+ service.config.broadcaster("items", node, { [jid] = true }, item);
+end
+
+local function update_subscriptions(recipient, service_name, nodes)
+ nodes = nodes or empty_set;
+
+ local service_recipients = recipients[service_name];
+ if not service_recipients then
+ service_recipients = {};
+ recipients[service_name] = service_recipients;
+ end
+
+ local current = service_recipients[recipient];
+ if not current or type(current) ~= "table" then
+ current = empty_set;
+ end
+
+ if (current == empty_set or current:empty()) and (nodes == empty_set or nodes:empty()) then
+ return;
+ end
+
+ local service = get_pep_service(service_name);
+ for node in current - nodes do
+ service:remove_subscription(node, recipient, recipient);
+ end
+
+ for node in nodes - current do
+ service:add_subscription(node, recipient, recipient);
+ resend_last_item(recipient, node, service);
+ end
+
+ if nodes == empty_set or nodes:empty() then
+ nodes = nil;
+ end
+
+ service_recipients[recipient] = nodes;
+end
+
+module:hook("presence/bare", function(event)
+ -- inbound presence to bare JID received
+ local origin, stanza = event.origin, event.stanza;
+ local t = stanza.attr.type;
+ local is_self = not stanza.attr.to;
+ local username = jid_split(stanza.attr.to);
+ local user_bare = jid_bare(stanza.attr.to);
+ if is_self then
+ username = origin.username;
+ user_bare = jid_join(username, host);
+ end
+
+ if not t then -- available presence
+ if is_self or subscription_presence(username, stanza.attr.from) then
+ local recipient = stanza.attr.from;
+ local current = recipients[username] and recipients[username][recipient];
+ local hash, query_node = get_caps_hash_from_presence(stanza, current);
+ if current == hash or (current and current == hash_map[hash]) then return; end
+ if not hash then
+ update_subscriptions(recipient, username);
+ else
+ recipients[username] = recipients[username] or {};
+ if hash_map[hash] then
+ update_subscriptions(recipient, username, hash_map[hash]);
+ else
+ recipients[username][recipient] = hash;
+ local from_bare = origin.type == "c2s" and origin.username.."@"..origin.host;
+ if is_self or origin.type ~= "c2s" or (recipients[from_bare] and recipients[from_bare][origin.full_jid]) ~= hash then
+ -- COMPAT from ~= stanza.attr.to because OneTeam can't deal with missing from attribute
+ origin.send(
+ st.stanza("iq", {from=user_bare, to=stanza.attr.from, id="disco", type="get"})
+ :tag("query", {xmlns = "http://jabber.org/protocol/disco#info", node = query_node})
+ );
+ end
+ end
+ end
+ end
+ elseif t == "unavailable" then
+ update_subscriptions(stanza.attr.from, username);
+ elseif not is_self and t == "unsubscribe" then
+ local from = jid_bare(stanza.attr.from);
+ local subscriptions = recipients[username];
+ if subscriptions then
+ for subscriber in pairs(subscriptions) do
+ if jid_bare(subscriber) == from then
+ update_subscriptions(subscriber, username);
+ end
+ end
+ end
+ end
+end, 10);
+
+module:hook("iq-result/bare/disco", function(event)
+ local origin, stanza = event.origin, event.stanza;
+ local disco = stanza:get_child("query", "http://jabber.org/protocol/disco#info");
+ if not disco then
+ return;
+ end
+
+ -- Process disco response
+ local is_self = stanza.attr.to == nil;
+ local user_bare = jid_bare(stanza.attr.to);
+ local username = jid_split(stanza.attr.to);
+ if is_self then
+ username = origin.username;
+ user_bare = jid_join(username, host);
+ end
+ local contact = stanza.attr.from;
+ local current = recipients[username] and recipients[username][contact];
+ if type(current) ~= "string" then return; end -- check if waiting for recipient's response
+ local ver = current;
+ if not string.find(current, "#") then
+ ver = calculate_hash(disco.tags); -- calculate hash
+ end
+ local notify = set_new();
+ for _, feature in pairs(disco.tags) do
+ if feature.name == "feature" and feature.attr.var then
+ local nfeature = feature.attr.var:match("^(.*)%+notify$");
+ if nfeature then notify:add(nfeature); end
+ end
+ end
+ hash_map[ver] = notify; -- update hash map
+ if is_self then
+ -- Optimization: Fiddle with other local users
+ for jid, item in pairs(origin.roster) do -- for all interested contacts
+ if jid then
+ local contact_node, contact_host = jid_split(jid);
+ if contact_host == host and item.subscription == "both" or item.subscription == "from" then
+ update_subscriptions(user_bare, contact_node, notify);
+ end
+ end
+ end
+ end
+ update_subscriptions(contact, username, notify);
+end);
+
+module:hook("account-disco-info-node", function(event)
+ local stanza, origin = event.stanza, event.origin;
+ local service_name = origin.username;
+ if stanza.attr.to ~= nil then
+ service_name = jid_split(stanza.attr.to);
+ end
+ local service = get_pep_service(service_name);
+ return lib_pubsub.handle_disco_info_node(event, service);
+end);
+
+module:hook("account-disco-info", function(event)
+ local origin, reply = event.origin, event.reply;
+
+ reply:tag('identity', {category='pubsub', type='pep'}):up();
+
+ local username = jid_split(reply.attr.from) or origin.username;
+ local service = get_pep_service(username);
+
+ local supported_features = lib_pubsub.get_feature_set(service) + set.new{
+ -- Features not covered by the above
+ "access-presence",
+ "auto-subscribe",
+ "filtered-notifications",
+ "last-published",
+ "persistent-items",
+ "presence-notifications",
+ "presence-subscribe",
+ };
+
+ for feature in supported_features do
+ reply:tag('feature', {var=xmlns_pubsub.."#"..feature}):up();
+ end
+end);
+
+module:hook("account-disco-items-node", function(event)
+ local stanza, origin = event.stanza, event.origin;
+ local is_self = stanza.attr.to == nil;
+ local username = jid_split(stanza.attr.to);
+ if is_self then
+ username = origin.username;
+ end
+ local service = get_pep_service(username);
+ return lib_pubsub.handle_disco_items_node(event, service);
+end);
+
+module:hook("account-disco-items", function(event)
+ local reply, stanza, origin = event.reply, event.stanza, event.origin;
+
+ local is_self = stanza.attr.to == nil;
+ local user_bare = jid_bare(stanza.attr.to);
+ local username = jid_split(stanza.attr.to);
+ if is_self then
+ username = origin.username;
+ user_bare = jid_join(username, host);
+ end
+ local service = get_pep_service(username);
+
+ local ok, ret = service:get_nodes(jid_bare(stanza.attr.from));
+ if not ok then return; end
+
+ for node, node_obj in pairs(ret) do
+ reply:tag("item", { jid = user_bare, node = node, name = node_obj.config.name }):up();
+ end
+end);