mod_post_msg/mod_post_msg.lua
author Kim Alvefur <zash@zash.se>
Mon, 24 Aug 2015 23:17:36 +0200
changeset 1788 1656d4fd71d0
parent 1418 a0375f84d65a
child 2993 926aaaeb0d21
permissions -rw-r--r--
mod_cloud_notify: Fix syntax errors and name
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module:depends"http"
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local jid_split = require "util.jid".split;
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local jid_prep = require "util.jid".prep;
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local msg = require "util.stanza".message;
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local test_password = require "core.usermanager".test_password;
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local b64_decode = require "util.encodings".base64.decode;
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local formdecode = require "net.http".formdecode;
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local xml = require"util.xml";
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local function require_valid_user(f)
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	return function(event, path)
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		local request = event.request;
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		local response = event.response;
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		local headers = request.headers;
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		if not headers.authorization then
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			response.headers.www_authenticate = ("Basic realm=%q"):format(module.host.."/"..module.name);
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			return 401
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		end
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		local from_jid, password = b64_decode(headers.authorization:match"[^ ]*$"):match"([^:]*):(.*)";
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		from_jid = jid_prep(from_jid);
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		if from_jid and password then
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			local user, host = jid_split(from_jid);
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			local ok, err = test_password(user, host, password);
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			if ok and user and host then
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				module:log("debug", "Authed as %s", from_jid);
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				return f(event, path, from_jid);
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			elseif err then
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				module:log("debug", "User failed authentication: %s", err);
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			end
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		end
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		return 401
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	end
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end
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local function handle_post(event, path, authed_user)
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	local request = event.request;
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	local response = event.response;
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	local headers = request.headers;
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	local body_type = headers.content_type;
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	local to = jid_prep(path);
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	local message;
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	if body_type == "text/plain" then
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		if to and request.body then
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			message = msg({ to = to, from = authed_user, type = "chat"},request.body);
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		end
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	elseif body_type == "application/x-www-form-urlencoded" then
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		local post_body = formdecode(request.body);
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		message = msg({ to = post_body.to or to, from = authed_user,
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		                type = post_body.type or "chat"}, post_body.body);
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		if post_body.html then
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			local html, err = xml.parse([[<body xmlns="http://www.w3.org/1999/xhtml">]]..post_body.html..[[</body>]]);
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			if not html then
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				module:log("warn", "mod_post_msg: invalid XML: %s", err);
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				return 400;
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			end
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			message:tag("html", {xmlns="http://jabber.org/protocol/xhtml-im"}):add_child(html):up();
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		end
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	else
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		return 415;
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	end
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	if message and message.attr.to then
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		module:log("debug", "Sending %s", tostring(message));
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		module:send(message);
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		return 201;
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	end
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	return 422;
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end
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module:provides("http", {
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	default_path = "/msg";
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	route = {
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		["POST /*"] = require_valid_user(handle_post);
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		OPTIONS = function(e)
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			local headers = e.response.headers;
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			headers.allow = "POST";
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			headers.accept = "application/x-www-form-urlencoded, text/plain";
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			return 200;
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		end;
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	}
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});