+local events = require "util.events";
+
module("pubsub", package.seeall);
local service = {};
affiliations = {};
subscriptions = {};
nodes = {};
+ events = events.new();
}, service_mt);
end
function service:may(node, actor, action)
if actor == true then return true; end
-
local node_obj = self.nodes[node];
local node_aff = node_obj and node_obj.affiliations[actor];
local service_aff = self.affiliations[actor]
or self.config.get_affiliation(actor, node, action)
or "none";
+ -- Check if node allows/forbids it
local node_capabilities = node_obj and node_obj.capabilities;
- local service_capabilities = self.config.capabilities;
-
- -- Check if node allows/forbids it
if node_capabilities then
local caps = node_capabilities[node_aff or service_aff];
if caps then
end
end
end
+
-- Check service-wide capabilities instead
+ local service_capabilities = self.config.capabilities;
local caps = service_capabilities[node_aff or service_aff];
if caps then
local can = caps[action];
return false, "item-not-found";
end
node_obj.affiliations[jid] = affiliation;
- local _, jid_sub = self:get_subscription(node, nil, jid);
+ local _, jid_sub = self:get_subscription(node, true, jid);
if not jid_sub and not self:may(node, jid, "be_unsubscribed") then
- local ok, err = self:add_subscription(node, nil, jid);
+ local ok, err = self:add_subscription(node, true, jid);
if not ok then
return ok, err;
end
elseif jid_sub and not self:may(node, jid, "be_subscribed") then
- local ok, err = self:add_subscription(node, nil, jid);
+ local ok, err = self:add_subscription(node, true, jid);
if not ok then
return ok, err;
end
function service:add_subscription(node, actor, jid, options)
-- Access checking
local cap;
- if jid == actor or self:jids_equal(actor, jid) then
+ if actor == true or jid == actor or self:jids_equal(actor, jid) then
cap = "subscribe";
else
cap = "subscribe_other";
if not self.config.autocreate_on_subscribe then
return false, "item-not-found";
else
- local ok, err = self:create(node, actor);
+ local ok, err = self:create(node, true);
if not ok then
return ok, err;
end
else
self.subscriptions[normal_jid] = { [jid] = { [node] = true } };
end
+ self.events.fire_event("subscription-added", { node = node, jid = jid, normalized_jid = normal_jid, options = options });
return true;
end
function service:remove_subscription(node, actor, jid)
-- Access checking
local cap;
- if jid == actor or self:jids_equal(actor, jid) then
+ if actor == true or jid == actor or self:jids_equal(actor, jid) then
cap = "unsubscribe";
else
cap = "unsubscribe_other";
self.subscriptions[normal_jid] = nil;
end
end
+ self.events.fire_event("subscription-removed", { node = node, jid = jid, normalized_jid = normal_jid });
+ return true;
+end
+
+function service:remove_all_subscriptions(actor, jid)
+ local normal_jid = self.config.normalize_jid(jid);
+ local subs = self.subscriptions[normal_jid]
+ subs = subs and subs[jid];
+ if subs then
+ for node in pairs(subs) do
+ self:remove_subscription(node, true, jid);
+ end
+ end
return true;
end
function service:get_subscription(node, actor, jid)
-- Access checking
local cap;
- if jid == actor or self:jids_equal(actor, jid) then
+ if actor == true or jid == actor or self:jids_equal(actor, jid) then
cap = "get_subscription";
else
cap = "get_subscription_other";
return ok, err;
end
+function service:delete(node, actor)
+ -- Access checking
+ if not self:may(node, actor, "delete") then
+ return false, "forbidden";
+ end
+ --
+ local node_obj = self.nodes[node];
+ self.nodes[node] = nil;
+ self.config.broadcaster("delete", node, node_obj.subscribers);
+ return true;
+end
+
function service:publish(node, actor, id, item)
-- Access checking
if not self:may(node, actor, "publish") then
if not self.config.autocreate_on_publish then
return false, "item-not-found";
end
- local ok, err = self:create(node, actor);
+ local ok, err = self:create(node, true);
if not ok then
return ok, err;
end
node_obj = self.nodes[node];
end
node_obj.data[id] = item;
- self.config.broadcaster(node, node_obj.subscribers, item);
+ self.events.fire_event("item-published", { node = node, actor = actor, id = id, item = item });
+ self.config.broadcaster("items", node, node_obj.subscribers, item);
return true;
end
end
node_obj.data[id] = nil;
if retract then
- self.config.broadcaster(node, node_obj.subscribers, retract);
+ self.config.broadcaster("items", node, node_obj.subscribers, retract);
+ end
+ return true
+end
+
+function service:purge(node, actor, notify)
+ -- Access checking
+ if not self:may(node, actor, "retract") then
+ return false, "forbidden";
+ end
+ --
+ local node_obj = self.nodes[node];
+ if not node_obj then
+ return false, "item-not-found";
+ end
+ node_obj.data = {}; -- Purge
+ if notify then
+ self.config.broadcaster("purge", node, node_obj.subscribers);
end
return true
end
function service:get_subscriptions(node, actor, jid)
-- Access checking
local cap;
- if jid == actor or self:jids_equal(actor, jid) then
+ if actor == true or jid == actor or self:jids_equal(actor, jid) then
cap = "get_subscriptions";
else
cap = "get_subscriptions_other";
if node then -- Return only subscriptions to this node
if subscribed_nodes[node] then
ret[#ret+1] = {
- node = subscribed_node;
+ node = subscribed_nodes[node];
jid = jid;
subscription = node_obj.subscribers[jid];
};