prosody-modules: mod_pubsub_hub/mod_pubsub

annotate mod_pubsub_hub/mod_pubsub_hub.lua @ 801:133ee88d19ae

mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH

author	Kim Alvefur <zash@zash.se>
date	Fri, 17 Aug 2012 17:23:52 +0200
parents	e781e63a49f4
children	853a382c9bd6

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
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	5 local http = require "net.http";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	6 local formdecode = http.formdecode;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	7 local formencode = http.formencode;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	8 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	9 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	10 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	11 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	12 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	13 local tostring = tostring;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	14 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	15 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	16 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	17
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	18 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	19
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	20 module:depends"pubsub";
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 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	23
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	24 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	25 -- 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	26 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	27 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	28 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	29 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	30 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	31
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	32 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	33 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	34 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	35
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	36 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	37 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	38 query = formdecode(query);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	39 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	40 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	41 body = formdecode(body);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	42 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	43
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	44 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	45 -- Subscription request
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	46 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	47 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	48
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	49 -- 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	50 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	51 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	52 local topic = body["hub.topic"];
767 e5667f1da6bf mod_pubsub_hub: Enforce minimal lease time Kim Alvefur <zash@zash.se> parents: 766 diff changeset	53 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	54 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	55 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	56
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	57 module:log("debug", "topic is "..(type(topic)=="string" and "%q" or "%s"), topic);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	58
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	59 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	60 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	61 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	62 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	63
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	64 local verify_modes = {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	65 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	66 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	67 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	68 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	69 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	70
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	71 subscription = subscription or {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	72 id = uuid(),
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	73 callback = callback,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	74 topic = topic,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	75 state = "unsubscribed",
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	76 secret = secret,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	77 want_state = mode,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	78 lease_seconds = lease_seconds,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	79 expires = time() + lease_seconds,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	80 };
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	81 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	82 local challenge = uuid();
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	83
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	84 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	85 ["hub.mode"] = mode,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	86 ["hub.topic"] = topic,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	87 ["hub.challenge"] = challenge,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	88 ["hub.lease_seconds"] = tostring(lease_seconds),
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	89 ["hub.verify_token"] = verify_token,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	90 }
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	91 module:log("debug", require"util.serialization".serialize(verify_modes));
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	92 if verify_modes["async"] then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	93 module:log("debug", "Sending async verification request to %s for %s", tostring(callback_url), tostring(subscription));
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	94 http.request(callback_url, nil, function(body, code)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	95 if body == challenge and code > 199 and code < 300 then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	96 if not subscription.want_state then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	97 module:log("warn", "Verification of already verified request, probably");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	98 return;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	99 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	100 subscription.state = subscription.want_state .. "d";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	101 subscription.want_state = nil;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	102 module:log("debug", "calling do_subscribe()");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	103 do_subscribe(subscription);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	104 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	105 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	106 module:log("warn", "status %d and body was %q", tostring(code), tostring(body));
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	107 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	108 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	109 end)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	110 return 202;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	111 elseif verify_modes["sync"] then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	112 http.request(callback_url, nil, function(body, code)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	113 if body == challenge and code > 199 and code < 300 then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	114 if not subscription.want_state then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	115 module:log("warn", "Verification of already verified request, probably");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	116 return;
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 if mode == "unsubscribe" then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	119 subs_by_topic[topic][callback] = nil;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	120 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	121 subscription.state = subscription.want_state .. "d";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	122 subscription.want_state = nil;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	123 module:log("debug", "calling do_subscribe()");
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	124 do_subscribe(subscription);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	125 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	126 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	127 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	128 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	129 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	130 response.status = 204;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	131 response:send();
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 return true;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	134 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	135 return 400;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	136 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	137 response.status = 400;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	138 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	139 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	140 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	141 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	142 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	143
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	144 local function periodic()
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	145 local now = time();
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	146 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	147 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	148 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	149 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	150 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	151 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	152 -- 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	153 purge = true;
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	154 elseif subscription.expires < now + min_lease then
764 d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	155 -- Subscription set to expire soon, re-confirm it.
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	156 local challenge = uuid();
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	157 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	158 ["hub.mode"] = subscription.state,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	159 ["hub.topic"] = topic,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	160 ["hub.challenge"] = challenge,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	161 ["hub.lease_seconds"] = subscription.lease_seconds,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	162 ["hub.verify_token"] = subscription.verify_token,
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	163 }
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	164 http.request(callback_url, nil, function(body, code)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	165 if body == challenge and code > 199 and code < 300 then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	166 subscription.expires = now + subscription.lease_seconds;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	167 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	168 end);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	169 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	170 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	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 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	174 if purge then
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	175 local new_callbacks = {};
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	176 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	177 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	178 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	179 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	180 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	181 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	182 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	183 purge = false;
764 d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	184 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	185 end
785 e781e63a49f4 mod_pubsub_hub: Fix calculating next periodic check of subscriptions. Kim Alvefur <zash@zash.se> parents: 767 diff changeset	186 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	187 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	188
801 133ee88d19ae mod_pubsub_hub: Add compat wrapping of Atom content for interop with PuSH Kim Alvefur <zash@zash.se> parents: 785 diff changeset	189 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	190 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	191
764 d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	192 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	193 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	194 -- 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	195 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	196 end
764 d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	197 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	198 local headers = {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	199 ["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	200 };
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	201 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	202 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	203 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	204 http.request(subscription.callback, { method = "POST", body = body, headers = headers }, function(body, code)
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	205 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	206 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	207 else
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	208 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	209 -- TODO Retry
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	210 -- ... 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	211 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	212 end);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	213 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	214
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	215 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	216 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	217 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	218
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	219 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	220 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	221 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	222 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	223 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	224 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	225 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	226 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	227 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	228 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	229 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	230 end
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	231 return true;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	232 end, 10);
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	233
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	234 module:depends"http";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	235 module:provides("http", {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	236 default_path = "/hub";
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	237 route = {
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	238 POST = handle_request;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	239 GET = function()
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	240 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	241 end;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	242 ["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	243 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	244 end;
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	245 };
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	246 });
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	247
d11d91ee81ed mod_pubsub_hub: New module that implements the Hub part of PubSubHubbub Kim Alvefur <zash@zash.se> parents: diff changeset	248 module:add_timer(1, periodic);

Mercurial > prosody-modules

annotate mod_pubsub_hub/mod_pubsub_hub.lua @ 801:133ee88d19ae