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-rw-r--r--plugins/mod_pep.lua593
1 files changed, 364 insertions, 229 deletions
diff --git a/plugins/mod_pep.lua b/plugins/mod_pep.lua
index 1025be37..0d52a2fd 100644
--- a/plugins/mod_pep.lua
+++ b/plugins/mod_pep.lua
@@ -1,318 +1,453 @@
--- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
---
--- This project is MIT/X11 licensed. Please see the
--- COPYING file in the source package for more information.
---
-
-
+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 is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
-local pairs = pairs;
-local next = next;
-local type = type;
local calculate_hash = require "util.caps".calculate_hash;
-local core_post_stanza = prosody.core_post_stanza;
-local bare_sessions = prosody.bare_sessions;
-
--- Used as canonical 'empty table'
-local NULL = {};
--- data[user_bare_jid][node] = item_stanza
-local data = {};
---- recipients[user_bare_jid][contact_full_jid][subscribed_node] = true
+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();
+
+-- username -> util.pubsub service object
+local services = {};
+
+-- username -> recipient -> set of nodes
local recipients = {};
--- hash_map[hash][subscribed_nodes] = true
+
+-- caps hash -> set of nodes
local hash_map = {};
-module.save = function()
- return { data = data, recipients = recipients, hash_map = hash_map };
+local host = module.host;
+
+local node_config = module:open_store("pep", "map");
+local known_nodes = module:open_store("pep");
+
+local max_max_items = module:get_option_number("pep_max_items", 256);
+
+function module.save()
+ return {
+ services = services;
+ recipients = recipients;
+ };
+end
+
+function module.restore(data)
+ services = data.services;
+ recipients = data.recipients;
end
-module.restore = function(state)
- data = state.data or {};
- recipients = state.recipients or {};
- hash_map = state.hash_map or {};
+
+function is_item_stanza(item)
+ return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item";
end
-module:add_identity("pubsub", "pep", module:get_option_string("name", "Prosody"));
-module:add_feature("http://jabber.org/protocol/pubsub#publish");
+function check_node_config(node, actor, new_config) -- luacheck: ignore 212/node 212/actor
+ if (new_config["max_items"] or 1) > max_max_items then
+ return false;
+ end
+ if new_config["access_model"] ~= "presence"
+ and new_config["access_model"] ~= "whitelist"
+ and new_config["access_model"] ~= "open" then
+ return false;
+ end
+ return true;
+end
-local function subscription_presence(user_bare, recipient)
+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
- local username, host = jid_split(user_bare);
+ if (recipient_bare == user_bare) then return true; end
return is_contact_subscribed(username, host, recipient_bare);
end
-module:hook("pep-publish-item", function (event)
- local session, bare, node, id, item = event.session, event.user, event.node, event.id, event.item;
- item.attr.xmlns = nil;
- local disable = #item.tags ~= 1 or #item.tags[1] == 0;
- if #item.tags == 0 then item.name = "retract"; end
- local stanza = st.message({from=bare, type='headline'})
- :tag('event', {xmlns='http://jabber.org/protocol/pubsub#event'})
- :tag('items', {node=node})
- :add_child(item)
- :up()
- :up();
-
- -- store for the future
- local user_data = data[bare];
- if disable then
- if user_data then
- user_data[node] = nil;
- if not next(user_data) then data[bare] = nil; 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)
+ if data then
+ -- Save the data without subscriptions
+ local subscribers = {};
+ for jid, sub in pairs(data.subscribers) do
+ if type(sub) ~= "table" or not sub.presence then
+ subscribers[jid] = sub;
+ end
+ end
+ data = {
+ name = data.name;
+ config = data.config;
+ affiliations = data.affiliations;
+ subscribers = subscribers;
+ };
+ end
+ 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
- else
- if not user_data then user_data = {}; data[bare] = user_data; end
- user_data[node] = {id, item};
end
+end
- -- broadcast
- for recipient, notify in pairs(recipients[bare] or NULL) do
- if notify[node] then
- stanza.attr.to = recipient;
- core_post_stanza(session, stanza);
+local function get_broadcaster(username)
+ local user_bare = jid_join(username, host);
+ local function simple_broadcast(kind, node, jids, item, _, node_obj)
+ if node_obj then
+ if node_obj.config["notify_"..kind] == false then
+ return;
+ end
+ end
+ if kind == "retract" then
+ kind = "items"; -- XEP-0060 signals retraction in an <items> container
+ end
+ 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
+ if kind == "items" then
+ if node_obj and node_obj.config.include_payload == false then
+ item:maptags(function () return nil; end);
+ end
+ end
+ 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
-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({
+ node_defaults = {
+ ["max_items"] = 1;
+ ["persist_items"] = true;
+ ["access_model"] = "presence";
+ };
+
+ autocreate_on_publish = true;
+ autocreate_on_subscribe = true;
-local function publish_all(user, recipient, session)
- local d = data[user];
- local notify = recipients[user] and recipients[user][recipient];
- if d and notify then
- for node in pairs(notify) do
- if d[node] then
- local id, item = unpack(d[node]);
- session.send(st.message({from=user, to=recipient, type='headline'})
- :tag('event', {xmlns='http://jabber.org/protocol/pubsub#event'})
- :tag('items', {node=node})
- :add_child(item)
- :up()
- :up());
+ 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";
end
+ end;
+
+ access_models = {
+ presence = function (jid)
+ if subscription_presence(username, jid) then
+ return "member";
+ end
+ return "outcast";
+ end;
+ };
+
+ normalize_jid = jid_bare;
+
+ check_node_config = check_node_config;
+ });
+ 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
- for _, child in pairs(stanza.tags) do
- if child.name == "c" and child.attr.xmlns == "http://jabber.org/protocol/caps" 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
+ 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
- return; -- bad caps format
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 and 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
+ if service:add_subscription(node, recipient, recipient, { presence = true }) then
+ resend_last_item(recipient, node, service);
+ end
+ 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 recieved
+ -- inbound presence to bare JID received
local origin, stanza = event.origin, event.stanza;
- local user = stanza.attr.to or (origin.username..'@'..origin.host);
local t = stanza.attr.type;
- local self = not stanza.attr.to;
-
- -- Only cache subscriptions if user is online
- if not bare_sessions[user] then return; end
+ 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 self or subscription_presence(user, stanza.attr.from) then
+ if is_self or subscription_presence(username, stanza.attr.from) then
local recipient = stanza.attr.from;
- local current = recipients[user] and recipients[user][recipient];
- local hash = get_caps_hash_from_presence(stanza, current);
+ 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
- if recipients[user] then recipients[user][recipient] = nil; end
+ update_subscriptions(recipient, username);
else
- recipients[user] = recipients[user] or {};
+ recipients[username] = recipients[username] or {};
if hash_map[hash] then
- recipients[user][recipient] = hash_map[hash];
- publish_all(user, recipient, origin);
+ update_subscriptions(recipient, username, hash_map[hash]);
else
- recipients[user][recipient] = hash;
+ recipients[username][recipient] = hash;
local from_bare = origin.type == "c2s" and origin.username.."@"..origin.host;
- if 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 and Asterisk 1.8 can't deal with missing from attribute
+ 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, to=stanza.attr.from, id="disco", type="get"})
- :query("http://jabber.org/protocol/disco#info")
+ 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
- if recipients[user] then recipients[user][stanza.attr.from] = nil; end
- elseif not self and t == "unsubscribe" 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[user];
+ local subscriptions = recipients[username];
if subscriptions then
for subscriber in pairs(subscriptions) do
if jid_bare(subscriber) == from then
- recipients[user][subscriber] = nil;
+ update_subscriptions(subscriber, username);
end
end
end
end
end, 10);
-module:hook("iq/bare/http://jabber.org/protocol/pubsub:pubsub", function(event)
- local session, stanza = event.origin, event.stanza;
- local payload = stanza.tags[1];
-
- if stanza.attr.type == 'set' and (not stanza.attr.to or jid_bare(stanza.attr.from) == stanza.attr.to) then
- payload = payload.tags[1];
- if payload and (payload.name == 'publish' or payload.name == 'retract') and payload.attr.node then -- <publish node='http://jabber.org/protocol/tune'>
- local node = payload.attr.node;
- payload = payload.tags[1];
- if payload and payload.name == "item" then -- <item>
- local id = payload.attr.id or "1";
- payload.attr.id = id;
- session.send(st.reply(stanza));
- module:fire_event("pep-publish-item", {
- node = node, user = jid_bare(session.full_jid), actor = session.jid,
- id = id, session = session, item = st.clone(payload);
- });
- return true;
- else
- module:log("debug", "Payload is missing the <item>", node);
- end
- else
- module:log("debug", "Unhandled payload: %s", payload and payload:top_tag() or "(no payload)");
+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
- elseif stanza.attr.type == 'get' then
- local user = stanza.attr.to and jid_bare(stanza.attr.to) or session.username..'@'..session.host;
- if subscription_presence(user, stanza.attr.from) then
- local user_data = data[user];
- local node, requested_id;
- payload = payload.tags[1];
- if payload and payload.name == 'items' then
- node = payload.attr.node;
- local item = payload.tags[1];
- if item and item.name == "item" then
- requested_id = item.attr.id;
- end
- end
- if node and user_data and user_data[node] then -- Send the last item
- local id, item = unpack(user_data[node]);
- if not requested_id or id == requested_id then
- local stanza = st.reply(stanza)
- :tag('pubsub', {xmlns='http://jabber.org/protocol/pubsub'})
- :tag('items', {node=node})
- :add_child(item)
- :up()
- :up();
- session.send(stanza);
- return true;
- else -- requested item doesn't exist
- local stanza = st.reply(stanza)
- :tag('pubsub', {xmlns='http://jabber.org/protocol/pubsub'})
- :tag('items', {node=node})
- :up();
- session.send(stanza);
- return true;
+ 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
- elseif node then -- node doesn't exist
- session.send(st.error_reply(stanza, 'cancel', 'item-not-found'));
- module:log("debug", "Item '%s' not found", node)
- return true;
- else --invalid request
- session.send(st.error_reply(stanza, 'modify', 'bad-request'));
- module:log("debug", "Invalid request: %s", tostring(payload));
- return true;
end
- else --no presence subscription
- session.send(st.error_reply(stanza, 'auth', 'not-authorized')
- :tag('presence-subscription-required', {xmlns='http://jabber.org/protocol/pubsub#errors'}));
- module:log("debug", "Unauthorized request: %s", tostring(payload));
- return true;
end
end
+ update_subscriptions(contact, username, notify);
end);
-module:hook("iq-result/bare/disco", function(event)
- local session, stanza = event.origin, event.stanza;
- if stanza.attr.type == "result" then
- local disco = stanza.tags[1];
- if disco and disco.name == "query" and disco.attr.xmlns == "http://jabber.org/protocol/disco#info" then
- -- Process disco response
- local self = not stanza.attr.to;
- local user = stanza.attr.to or (session.username..'@'..session.host);
- local contact = stanza.attr.from;
- local current = recipients[user] and recipients[user][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 = {};
- 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[nfeature] = true; end
- end
- end
- hash_map[ver] = notify; -- update hash map
- if self then
- for jid, item in pairs(session.roster) do -- for all interested contacts
- if item.subscription == "both" or item.subscription == "from" then
- if not recipients[jid] then recipients[jid] = {}; end
- recipients[jid][contact] = notify;
- publish_all(jid, contact, session);
- end
- end
- end
- recipients[user][contact] = notify; -- set recipient's data to calculated data
- -- send messages to recipient
- publish_all(user, contact, session);
- 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 reply = event.reply;
+ local origin, reply = event.origin, event.reply;
+
reply:tag('identity', {category='pubsub', type='pep'}):up();
- reply:tag('feature', {var='http://jabber.org/protocol/pubsub#publish'}):up();
-end);
-module:hook("account-disco-items", function(event)
- local reply = event.reply;
- local bare = reply.attr.to;
- local user_data = data[bare];
+ local username = jid_split(reply.attr.from) or origin.username;
+ local service = get_pep_service(username);
- if user_data then
- for node, _ in pairs(user_data) do
- reply:tag('item', {jid=bare, node=node}):up();
- end
+ local supported_features = lib_pubsub.get_feature_set(service) + set.new{
+ -- Features not covered by the above
+ "auto-subscribe",
+ "filtered-notifications",
+ "last-published",
+ "presence-notifications",
+ "presence-subscribe",
+ };
+
+ for feature in supported_features do
+ reply:tag('feature', {var=xmlns_pubsub.."#"..feature}):up();
end
end);
-module:hook("account-disco-info-node", function (event)
- local session, stanza, node = event.origin, event.stanza, event.node;
- local user = stanza.attr.to;
- local user_data = data[user];
- if user_data and user_data[node] then
- event.exists = true;
- event.reply:tag('identity', {category='pubsub', type='leaf'}):up();
+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("resource-unbind", function (event)
- local user_bare_jid = event.session.username.."@"..event.session.host;
- if not bare_sessions[user_bare_jid] then -- User went offline
- -- We don't need this info cached anymore, clear it.
- recipients[user_bare_jid] = nil;
+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);