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plugins/mod_pep_plus.lua @ 7359:a5a080c12c96
Update every link to the documentation to use HTTPS
author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
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date | Sat, 16 Apr 2016 21:08:05 +0100 |
parent | 6449:24cd03cd1847 |
child | 8214:da8bc600902a |
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local pubsub = require "util.pubsub"; local jid_bare = require "util.jid".bare; local jid_split = require "util.jid".split; 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 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 handlers = lib_pubsub.handlers; local pubsub_error_reply = lib_pubsub.pubsub_error_reply; local empty_set = set_new(); local services = {}; local recipients = {}; local hash_map = {}; function module.save() return { services = services }; end function module.restore(data) services = data.services; end local function subscription_presence(user_bare, recipient) local recipient_bare = jid_bare(recipient); if (recipient_bare == user_bare) then return true; end local username, host = jid_split(user_bare); return is_contact_subscribed(username, host, recipient_bare); end local function get_broadcaster(name) local function simple_broadcast(kind, node, jids, item) if item then item = st.clone(item); item.attr.xmlns = nil; -- Clear the pubsub namespace end local message = st.message({ from = name, type = "headline" }) :tag("event", { xmlns = xmlns_pubsub_event }) :tag(kind, { node = node }) :add_child(item); for jid in pairs(jids) do module:log("debug", "Sending notification to %s from %s: %s", jid, name, tostring(item)); message.attr.to = jid; module:send(message); end end return simple_broadcast; end function get_pep_service(name) local service = services[name]; 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 = { ["pubsub#max_items"] = "1"; }; autocreate_on_publish = true; autocreate_on_subscribe = true; broadcaster = get_broadcaster(name); get_affiliation = function (jid) if jid_bare(jid) == name then return "owner"; elseif subscription_presence(name, jid) then return "subscriber"; end end; normalize_jid = jid_bare; }); services[name] = service; module:add_item("pep-service", { service = service, jid = name }); return service; end function handle_pubsub_iq(event) local origin, stanza = event.origin, event.stanza; local pubsub = stanza.tags[1]; local action = pubsub.tags[1]; if not action then return origin.send(st.error_reply(stanza, "cancel", "bad-request")); end local service_name = stanza.attr.to or origin.username.."@"..origin.host local service = get_pep_service(service_name); local handler = handlers[stanza.attr.type.."_"..action.name]; if handler then handler(origin, stanza, action, service); return true; end 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, items = service:get_items(node, jid); if not ok then return; end for i, id in ipairs(items) do service.config.broadcaster("items", node, { [jid] = true }, items[id]); end end local function update_subscriptions(recipient, service_name, nodes) local service = get_pep_service(service_name); 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 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 recieved 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; local service = get_pep_service(user); if not t then -- available presence if self or subscription_presence(user, stanza.attr.from) then local recipient = stanza.attr.from; local current = recipients[user] and recipients[user][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, user); else recipients[user] = recipients[user] or {}; if hash_map[hash] then update_subscriptions(recipient, user, hash_map[hash]); else recipients[user][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 can't deal with missing from attribute origin.send( st.stanza("iq", {from=user, 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, user); elseif not self and t == "unsubscribe" then local from = jid_bare(stanza.attr.from); local subscriptions = recipients[user]; if subscriptions then for subscriber in pairs(subscriptions) do if jid_bare(subscriber) == from then update_subscriptions(subscriber, user); 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 self = not stanza.attr.to; local user = stanza.attr.to or (origin.username..'@'..origin.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 = 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 self then for jid, item in pairs(origin.roster) do -- for all interested contacts if item.subscription == "both" or item.subscription == "from" then if not recipients[jid] then recipients[jid] = {}; end update_subscriptions(contact, jid, notify); end end end update_subscriptions(contact, user, notify); end); module:hook("account-disco-info-node", function(event) local reply, stanza, origin = event.reply, event.stanza, event.origin; local service_name = stanza.attr.to or origin.username.."@"..origin.host local service = get_pep_service(service_name); local node = event.node; local ok = service:get_items(node, jid_bare(stanza.attr.from) or true); if not ok then return; end event.exists = true; reply:tag('identity', {category='pubsub', type='leaf'}):up(); end); module:hook("account-disco-info", function(event) local reply = 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-node", function(event) local reply, stanza, origin = event.reply, event.stanza, event.origin; local node = event.node; local service_name = stanza.attr.to or origin.username.."@"..origin.host local service = get_pep_service(service_name); local ok, ret = service:get_items(node, jid_bare(stanza.attr.from) or true); if not ok then return; end event.exists = true; for _, id in ipairs(ret) do reply:tag("item", { jid = service_name, name = id }):up(); end end); module:hook("account-disco-items", function(event) local reply, stanza, origin = event.reply, event.stanza, event.origin; local service_name = reply.attr.from or origin.username.."@"..origin.host local service = get_pep_service(service_name); 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 = service_name, node = node, name = node_obj.config.name }):up(); end end);