Mercurial > prosody-modules
view mod_http_prebind/mod_http_prebind.lua @ 4293:edde5905744a
mod_s2s_keepalive: Don't send whitespace keepalives before s2sin stream is open
Could possibly result in whitespace before the XML and stream header,
which isn't allowed by the parser.
Don't think s2sout is affected, as the stream is opened early and
doesn't have to wait for the other end.
Thanks Ge0rG
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 10 Dec 2020 11:57:03 +0100 |
parents | 495a23d61418 |
children |
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module:depends("http"); local http = require "net.http"; local format = require "util.format".format; local json_encode = require "util.json".encode; local promise = require "util.promise"; local xml = require "util.xml"; local t_insert = table.insert; local function new_options(host) return { headers = { ["Content-Type"] = "text/xml; charset=utf-8", ["Host"] = host, }, method = "POST", }; end local function connect_to_bosh(url, hostname) local rid = math.random(100000, 100000000) local options = new_options(hostname); options.body = format([[<body content='text/xml; charset=utf-8' hold='1' rid='%d' to='%s' wait='60' xml:lang='en' xmpp:version='1.0' xmlns='http://jabber.org/protocol/httpbind' xmlns:xmpp='urn:xmpp:xbosh'/>]], rid, hostname); local rid = rid + 1; return promise.new(function (on_fulfilled, on_error) assert(http.request(url, options, function (body, code) if code ~= 200 then on_error("Failed to fetch, HTTP error code "..code); return; end local body = xml.parse(body); local sid = body.attr.sid; local mechanisms = {}; for mechanism in body:get_child("features", "http://etherx.jabber.org/streams") :get_child("mechanisms", "urn:ietf:params:xml:ns:xmpp-sasl") :childtags("mechanism", "urn:ietf:params:xml:ns:xmpp-sasl") do mechanisms[mechanism:get_text()] = true; end on_fulfilled({ url = url, sid = sid, rid = rid, mechanisms = mechanisms }); end)); end); end local function authenticate(data) local options = new_options(); options.body = format([[<body sid='%s' rid='%d' xmlns='http://jabber.org/protocol/httpbind'> <auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/> </body>]], data.sid, data.rid); data.rid = data.rid + 1; return promise.new(function (on_fulfilled, on_error) if data.mechanisms["ANONYMOUS"] == nil then on_error("No SASL ANONYMOUS mechanism supported on this host."); return; end assert(http.request(data.url, options, function (body, code) if code ~= 200 then on_error("Failed to fetch, HTTP error code "..code); return; end local body = xml.parse(body); local success = body:get_child("success", "urn:ietf:params:xml:ns:xmpp-sasl"); if success then data.mechanisms = nil; on_fulfilled(data); else on_error("Authentication failed."); end end)); end); end; local function restart_stream(data) local options = new_options(); options.body = format([[ <body sid='%s' rid='%d' xml:lang='en' xmlns='http://jabber.org/protocol/httpbind' xmlns:xmpp='urn:xmpp:xbosh' xmpp:restart='true'/>]], data.sid, data.rid); data.rid = data.rid + 1; return promise.new(function (on_fulfilled, on_error) assert(http.request(data.url, options, function (body, code) if code ~= 200 then on_error("Failed to fetch, HTTP error code "..code); return; end local body = xml.parse(body); on_fulfilled(data); end)); end); end; local function bind(data) local options = new_options(); options.body = format([[ <body sid='%s' rid='%d' xmlns='http://jabber.org/protocol/httpbind'> <iq xmlns='jabber:client' type='set'> <bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/> </iq> </body>]], data.sid, data.rid); data.rid = data.rid + 1; return promise.new(function (on_fulfilled, on_error) assert(http.request(data.url, options, function (body, code) if code ~= 200 then on_error("Failed to fetch, HTTP error code "..code); return; end local body = xml.parse(body); local jid = body:get_child("iq", "jabber:client") :get_child("bind", "urn:ietf:params:xml:ns:xmpp-bind") :get_child_text("jid", "urn:ietf:params:xml:ns:xmpp-bind"); on_fulfilled(json_encode({rid = data.rid, sid = data.sid, jid = jid})); end)); end); end; module:provides("http", { route = { ["GET"] = function (event) return connect_to_bosh("http://[::1]:5280/http-bind", module.host) :next(authenticate) :next(restart_stream) :next(bind); end; }; });