Mercurial > prosody-modules

annotate mod_pubsub_hub/mod_pubsub_hub.lua @ 1493:d5e8758d391d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_lastlog: Fix traceback if no session included with event (eg from mod_register_web) (thanks biszkopcik)
author Kim Alvefur <zash@zash.se>
date Mon, 25 Aug 2014 00:38:14 +0200
parents e9d164e694e7
children 4cec8b7aed6d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- Copyright (C) 2011 - 2012 Kim Alvefur
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 --
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 -- This file is MIT/X11 licensed.
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4
1325
b21236b6b8d8 Backed out changeset 853a382c9bd6
Kim Alvefur <zash@zash.se>
parents: 1324
diff changeset
5 local http = require "net.http";
b21236b6b8d8 Backed out changeset 853a382c9bd6
Kim Alvefur <zash@zash.se>
parents: 1324
diff changeset
6 local formdecode = http.formdecode;
b21236b6b8d8 Backed out changeset 853a382c9bd6
Kim Alvefur <zash@zash.se>
parents: 1324
diff changeset
7 local formencode = http.formencode;
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
8 local http_request = http.request;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 local uuid = require "util.uuid".generate;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 local hmac_sha1 = require "util.hmac".sha1;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 local json_encode = require "util.json".encode;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 local time = os.time;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 local m_min, m_max = math.min, math.max;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 local tostring = tostring;
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
15
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 local xmlns_pubsub_event = xmlns_pubsub .. "#event";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 local subs_by_topic = module:shared"subscriptions";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 local max_lease, min_lease, default_lease = 86400, 600, 3600;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 module:depends"pubsub";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 local valid_modes = { ["subscribe"] = true, ["unsubscribe"] = true, }
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 local function do_subscribe(subscription)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 -- FIXME handle other states
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 if subscription.state == "subscribed" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 local ok, err = hosts[module.host].modules.pubsub.service:add_subscription(subscription.topic, true, module.host);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 module:log(ok and "debug" or "error", "add_subscription() => %s, %s", tostring(ok), tostring(err));
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 local function handle_request(event)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35 local request, response = event.request, event.response;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 local method, body = request.method, request.body;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38 local query = request.url.query or {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 if query and type(query) == "string" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 query = formdecode(query);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42 if body and request.headers.content_type == "application/x-www-form-urlencoded" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 body = formdecode(body);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 if method == "POST" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 -- Subscription request
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 if body["hub.callback"] and body["hub.mode"] and valid_modes[body["hub.mode"]]
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 and body["hub.topic"] and body["hub.verify"] then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 -- http://pubsubhubbub.googlecode.com/svn/trunk/pubsubhubbub-core-0.3.html#anchor5
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 local callback = body["hub.callback"];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 local mode = body["hub.mode"];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 local topic = body["hub.topic"];
767
e5667f1da6bf mod_pubsub_hub: Enforce minimal lease time
Kim Alvefur <zash@zash.se>
parents: 766
diff changeset
55 local lease_seconds = m_max(min_lease, m_min(tonumber(body["hub.lease_seconds"]) or default_lease, max_lease));
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 local secret = body["hub.secret"];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 local verify_token = body["hub.verify_token"];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
59 module:log("debug", "topic is "..(type(topic)=="string" and "%q" or "%s"), tostring(topic));
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
60
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61 if not subs_by_topic[topic] then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
62 subs_by_topic[topic] = {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
63 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 local subscription = subs_by_topic[topic][callback];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 local verify_modes = {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67 for i=1,#body do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 if body[i].name == "hub.verify" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 verify_modes[body[i].value] = true;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 subscription = subscription or {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 id = uuid(),
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 callback = callback,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 topic = topic,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 state = "unsubscribed",
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 secret = secret,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 want_state = mode,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 };
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
81 subscription.lease_seconds = lease_seconds;
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
82 subscription.expires = time() + lease_seconds;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 subs_by_topic[topic][callback] = subscription;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
84 local challenge = uuid();
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 local callback_url = callback .. (callback:match("%?") and "&" or "?") .. formencode{
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87 ["hub.mode"] = mode,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 ["hub.topic"] = topic,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 ["hub.challenge"] = challenge,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 ["hub.lease_seconds"] = tostring(lease_seconds),
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
91 ["hub.verify_token"] = verify_token, -- COMPAT draft version 0.3
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
92 }
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
93 module:log("debug", "Sending async verification request to %s for %s", tostring(callback_url), tostring(subscription));
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
94 http_request(callback_url, nil, function(body, code)
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
95 if body == challenge and code > 199 and code < 300 then
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
96 if not subscription.want_state then
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
97 module:log("warn", "Verification of already verified request, probably");
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
98 return;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
99 end
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
100 subscription.state = subscription.want_state .. "d";
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
101 subscription.want_state = nil;
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
102 module:log("debug", "calling do_subscribe()");
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
103 do_subscribe(subscription);
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
104 subs_by_topic[topic][callback] = subscription;
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
105 else
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
106 module:log("warn", "status %d and body was %q", tostring(code), tostring(body));
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
107 subs_by_topic[topic][callback] = subscription;
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
108 end
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
109 end)
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
110 return 202;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
111 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
112 response.status = 400;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
113 response.headers.content_type = "text/html";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114 return "<h1>Bad Request</h1>\n<a href='http://pubsubhubbub.googlecode.com/svn/trunk/pubsubhubbub-core-0.3.html#anchor5'>Missing required parameter(s)</a>\n"
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
115 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
116 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
117 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
118
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
119 local function periodic(now)
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
120 local next_check = now + max_lease;
766
1184fe8ebb21 mod_pubsub_hub: Try to choose time until the next periodic check in a sane way
Kim Alvefur <zash@zash.se>
parents: 764
diff changeset
121 local purge = false;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
122 for topic, callbacks in pairs(subs_by_topic) do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
123 for callback, subscription in pairs(callbacks) do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
124 if subscription.mode == "subscribed" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
125 if subscription.expires < now then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
126 -- Subscription has expired, drop it.
766
1184fe8ebb21 mod_pubsub_hub: Try to choose time until the next periodic check in a sane way
Kim Alvefur <zash@zash.se>
parents: 764
diff changeset
127 purge = true;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
128 else
766
1184fe8ebb21 mod_pubsub_hub: Try to choose time until the next periodic check in a sane way
Kim Alvefur <zash@zash.se>
parents: 764
diff changeset
129 next_check = m_min(next_check, subscription.expires);
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
130 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
131 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
132 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
133 if purge then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
134 local new_callbacks = {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
135 for callback, subscription in pairs(callbacks) do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
136 if (subscription.state == "subscribed" and subscription.expires < now)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
137 and subscription.want_state ~= "remove" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
138 new_callbacks[callback] = subscription;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
139 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
140 end
766
1184fe8ebb21 mod_pubsub_hub: Try to choose time until the next periodic check in a sane way
Kim Alvefur <zash@zash.se>
parents: 764
diff changeset
141 subs_by_topic[topic] = new_callbacks;
1184fe8ebb21 mod_pubsub_hub: Try to choose time until the next periodic check in a sane way
Kim Alvefur <zash@zash.se>
parents: 764
diff changeset
142 purge = false;
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
144 end
785
e781e63a49f4 mod_pubsub_hub: Fix calculating next periodic check of subscriptions.
Kim Alvefur <zash@zash.se>
parents: 767
diff changeset
145 return m_max((now - next_check) - min_lease, min_lease);
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
146 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
147
801
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
148 local xmlns_atom = "http://www.w3.org/2005/Atom";
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
149 local st = require "util.stanza";
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
150
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
151 local function on_notify(subscription, content)
801
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
152 if content.attr and content.attr.xmlns == xmlns_atom then
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
153 -- COMPAT This is required by the PubSubHubbub spec.
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
154 content = st.stanza("feed", {xmlns=xmlns_atom}):add_child(content);
133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH
Kim Alvefur <zash@zash.se>
parents: 785
diff changeset
155 end
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
156 local body = tostring(content);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
157 local headers = {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
158 ["Content-Type"] = "application/xml",
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
159 };
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 if subscription.secret then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
161 headers["X-Hub-Signature"] = "sha1="..hmac_sha1(subscription.secret, body, true);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
162 end
1458
e9d164e694e7 mod_pubsub_hub: Update to PubSubHubbub version 0.4
Kim Alvefur <zash@zash.se>
parents: 1325
diff changeset
163 http_request(subscription.callback, { method = "POST", body = body, headers = headers }, function(body, code)
764
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
164 if code >= 200 and code <= 299 then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
165 module:log("debug", "Delivered");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
166 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 module:log("warn", "Got status code %d on delivery to %s", tonumber(code) or -1, tostring(subscription.callback));
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
168 -- TODO Retry
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
169 -- ... but the spec says that you should not retry, wtf?
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
170 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 end);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
172 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
173
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 module:hook("message/host", function(event)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
175 local stanza = event.stanza;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
176 if stanza.attr.from ~= module.host then return end;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 for pubsub_event in stanza:childtags("event", xmlns_pubsub_event) do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
179 local items = pubsub_event:get_child("items");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
180 local node = items.attr.node;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
181 if items and node and subs_by_topic[node] then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
182 for item in items:childtags("item") do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
183 local content = item.tags[1];
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
184 for callback, subscription in pairs(subs_by_topic[node]) do
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
185 on_notify(subscription, content)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
186 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
187 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
188 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
189 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
190 return true;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 end, 10);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
192
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
193 module:depends"http";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 module:provides("http", {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 default_path = "/hub";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
196 route = {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
197 POST = handle_request;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
198 GET = function()
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
199 return json_encode(subs_by_topic);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
200 end;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 ["GET /topic/*"] = function(event, path)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 return json_encode(subs_by_topic[path])
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203 end;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
204 };
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
205 });
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
206
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub
Kim Alvefur <zash@zash.se>
parents:
diff changeset
207 module:add_timer(1, periodic);