prosody-modules: mod_pubsub_hub/mod_pubsub

annotate mod_pubsub_hub/mod_pubsub_hub.lua @ 5575:372e59bd45d7

mod_pubsub_feeds: Remove comment, this text is in the README

author	Kim Alvefur <zash@zash.se>
date	Sun, 25 Jun 2023 16:48:21 +0200
parents	4cec8b7aed6d
children

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 = {
3021 4cec8b7aed6d mod_pubsub_hub: Use the correct MIME type for Atom feeds Kim Alvefur <zash@zash.se> parents: 1458 diff changeset	158 ["Content-Type"] = "application/atom+xml",
764 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);

Mercurial > prosody-modules

annotate mod_pubsub_hub/mod_pubsub_hub.lua @ 5575:372e59bd45d7