-- HTTP Access to PEP Avatar -- By Kim Alvefur 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, path) if path == "" then return [[

Hello from mod_http_pep_avatar

This module provides access to public avatars of local users.

]]; end; local request, response = event.request, event.response; local actor = request.ip; local user, item_id = path:match("^([^/]+)/(%x+)$"); if not user then user = path; end 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 (item_id or 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, item_id or avatar_hash); if not data_ok or type(avatar_data) ~= "table" or not avatar_data[item_id or avatar_hash] then return 404; end local info = avatar_meta.tags[1]:get_child("info"); if item_id and info.attr.id ~= item_id then info = nil; for altinfo in avatar_meta.tags[1]:childtags("info") do if altinfo.attr.id == item_id then info = altinfo; end end end if not info then return 404; end response.headers.etag = item_id or avatar_hash; response.headers.content_type = info and info.attr.type or "application/octet-stream"; local data = avatar_data[item_id or avatar_hash]; return base64_decode(data.tags[1]:get_text()); end; } });