author | Kim Alvefur <zash@zash.se> |
Mon, 12 Feb 2024 15:44:38 +0100 | |
changeset 5841 | 7d11a3133d17 |
parent 4042 | 02d238799537 |
permissions | -rw-r--r-- |
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-- HTTP Access to PEP Avatar |
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-- By Kim Alvefur <zash@zash.se> |
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local mod_pep = module:depends"pep"; |
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local um = require "core.usermanager"; |
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local nodeprep = require "util.encodings".stringprep.nodeprep; |
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local base64_decode = require "util.encodings".base64.decode; |
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local urlencode = require "util.http".urlencode; |
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module:depends("http") |
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module:provides("http", { |
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route = { |
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["GET /*"] = function (event, path) |
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if path == "" then |
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return [[<h1>Hello from mod_http_pep_avatar</h1><p>This module provides access to public avatars of local users.</p>]]; |
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end; |
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local request, response = event.request, event.response; |
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local actor = request.ip; |
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local user, item_id = path:match("^([^/]+)/(%x+)$"); |
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if not user then user = path; end |
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local prepped = nodeprep(user); |
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if not prepped then return 400; end |
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if prepped ~= user then |
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response.headers.location = module:http_url() .. "/" .. urlencode(prepped); |
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return 302; |
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end |
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if not um.user_exists(user, module.host) then |
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return 404; |
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end |
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local pep_service = mod_pep.get_pep_service(user); |
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local ok, avatar_hash, avatar_meta = pep_service:get_last_item("urn:xmpp:avatar:metadata", actor); |
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if not ok or not avatar_hash then |
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return 404; |
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end |
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if (item_id or avatar_hash) == request.headers.if_none_match then |
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return 304; |
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end |
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local data_ok, avatar_data = pep_service:get_items("urn:xmpp:avatar:data", actor, item_id or avatar_hash); |
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if not data_ok or type(avatar_data) ~= "table" or not avatar_data[item_id or avatar_hash] then |
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return 404; |
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end |
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local info = avatar_meta.tags[1]:get_child("info"); |
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if item_id and info.attr.id ~= item_id then |
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info = nil; |
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for altinfo in avatar_meta.tags[1]:childtags("info") do |
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if altinfo.attr.id == item_id then |
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info = altinfo; |
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end |
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end |
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end |
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if not info then |
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return 404; |
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end |
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|
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response.headers.etag = item_id or avatar_hash; |
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response.headers.content_type = info and info.attr.type or "application/octet-stream"; |
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local data = avatar_data[item_id or avatar_hash]; |
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return base64_decode(data.tags[1]:get_text()); |
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end; |
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} |
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}); |