Mercurial > prosody-modules
view mod_http_pep_avatar/mod_http_pep_avatar.lua @ 5186:fa3059e653fa
mod_http_oauth2: Implement the Implicit flow
Everyone says this is insecure and bad, but it's also the only thing
that makes sense for e.g. pure JavaScript clients, but hey implement
this even more complicated thing instead!
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 02 Mar 2023 22:06:50 +0100 |
parents | 02d238799537 |
children |
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-- 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, path) if path == "" then return [[<h1>Hello from mod_http_pep_avatar</h1><p>This module provides access to public avatars of local users.</p>]]; 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; } });