-- HTTP Access to PEP Avatar
-- 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 base64_decode = require "util.encodings".base64.decode;
local urlencode = require "util.http".urlencode;
module:depends("http")
module:provides("http", {
route = {
["GET /*"] = function (event, user)
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 pep_service = mod_pep.get_pep_service(user);
local ok, avatar_hash, avatar_meta = pep_service:get_last_item("urn:xmpp:avatar:metadata", actor);
if not ok or not avatar_hash then
return 404;
end
if avatar_hash == request.headers.if_none_match then
return 304;
end
local data_ok, avatar_data = pep_service:get_items("urn:xmpp:avatar:data", actor, avatar_hash);
if not data_ok or type(avatar_data) ~= "table" or not avatar_data[avatar_hash] then
return 404;
end
response.headers.etag = avatar_hash;
local info = avatar_meta.tags[1]:get_child("info");
response.headers.content_type = info and info.attr.type or "application/octet-stream";
local data = avatar_data[avatar_hash];
return base64_decode(data.tags[1]:get_text());
end;
}
});