Mercurial > prosody-modules
view mod_http_pep_avatar/mod_http_pep_avatar.lua @ 5243:d5dc8edb2695
mod_http_oauth2: Use more compact IDs
UUIDs are nice but so verbose!
The reduction in entropy for the nonce should be fine since the
timestamp is also counts towards this, and it changes every second
(modulo clock shenanigans), so the chances of someone managing to get
the same client_secret by registering with the same information at the
same time as another entity should be negligible.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sat, 11 Mar 2023 22:46:27 +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; } });