view mod_atom/mod_atom.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 5dd505c39c4b
children
line wrap: on
line source

-- HTTP Access to PEP -> microblog
-- By Kim Alvefur <zash@zash.se>

local mod_pep = module:depends"pep";

local um = require "core.usermanager";
local nodeprep = require "util.encodings".stringprep.nodeprep;
local st = require "util.stanza";
local urlencode = require "util.http".urlencode;

module:depends("http")
module:provides("http", {
	route = {
		["GET /*"] = function (event, user)
			if user == "" then
				return [[<h1>Hello from mod_atom</h1><p>This module provides access to public microblogs of local users.</p>]];
			end;

			local request, response = event.request, event.response;
			local actor = request.ip;

			local prepped = nodeprep(user);
			if not prepped then return 400; end
			if prepped ~= user then
				response.headers.location = module:http_url() .. "/" .. urlencode(prepped);
				return 302;
			end
			if not um.user_exists(user, module.host) then
				return 404;
			end

			local pubsub_service = mod_pep.get_pep_service(user);
			local ok, items = pubsub_service:get_items("urn:xmpp:microblog:0", actor);
			if ok then
				response.headers.content_type = "application/xml";
				local feed = st.stanza("feed", { xmlns = "http://www.w3.org/2005/Atom" })
					:text_tag("generator", "Prosody", { uri = "xmpp:prosody.im", version = prosody.version })
					:text_tag("title", pubsub_service.nodes["urn:xmpp:microblog:0"].config.title or "Microblog feed")
					:text_tag("subtitle", pubsub_service.nodes["urn:xmpp:microblog:0"].config.description)
					:tag("author")
						:text_tag("name", user)
						:text_tag("preferredUsername", user, { xmlns = "http://portablecontacts.net/spec/1.0" });
				local ok, _, nick = pubsub_service:get_last_item("http://jabber.org/protocol/nick", actor);
				if ok and nick then
					feed:text_tag("displayName", nick.tags[1][1], { xmlns = "http://portablecontacts.net/spec/1.0" });
				end

				feed:reset();

				for i = #items, 1, -1 do
					feed:add_direct_child(items[items[i]].tags[1]);
				end
				return tostring(feed);
			elseif items == "forbidden" then
				return 403;
			elseif items == "item-not-found" then
				return 404;
			end
		end;
	}
});