Mercurial > prosody-modules
view mod_http_prebind/mod_http_prebind.lua @ 4976:75b6e5df65f9
various: Improve error reporting if missing file server module on 0.12
If there is some error loading net.http.files then it would be swallowed
by the pcall and then it would proceed to trying mod_http_files, which
might cause unexpected behavior on 0.12
Ref #1765
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 18 Jul 2022 22:47:54 +0200 |
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; }; });