Mercurial > prosody-modules
view mod_http_prebind/mod_http_prebind.lua @ 4738:5aee8d86629a
mod_bookmarks2: Fix handling of nick and password elements
This form of child retrieval fails when the stanza elements internally
don't have an 'xmlns' attribute, which can happen sometimes for some
reason, including when they have been constructed via the stanza builder
API. When that is the case then the explicit namespace arguemnt does not
match the nil value of the internal attribute. Calling `:get_child()`
without the namespace argument does the right thing here, with both nil
and the parent namespace as valid values for the internal attribute.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 03 Nov 2021 21:11:55 +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; }; });