mod_http_xep227: Add support for import via APIs rather than direct store manipulation
In particular this transitions PEP nodes and data to be imported via mod_pep's
APIs, fixing issues with importing at runtime while PEP data may already be
live in RAM.
Next obvious candidate for this approach is rosters, so clients get immediate
roster pushes and other special handling (such as emitting subscribes to reach
the desired subscription state).
-- 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;
}
});