local it = require "util.iterators";
local http = require "util.http";
local sm = require "core.storagemanager";
local st = require "util.stanza";
local xml = require "util.xml";
local jid_join = require "util.jid".join;
local mod_pep = module:depends("pep");
local tokens = module:depends("tokenauth");
module:depends("storage_xep0227");
local archive_store_name = module:get_option("archive_store", "archive");
local known_stores = {
accounts = "keyval";
roster = "keyval";
private = "keyval";
pep = "keyval";
vcard = "keyval";
[archive_store_name] = "archive";
pep_data = "archive";
};
local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
local function new_user_xml(username, host)
local user_xml = st.stanza("server-data", {xmlns='urn:xmpp:pie:0'})
:tag("host", { jid = host })
:tag("user", { name = username }):reset();
return {
set_user_xml = function (_, store_username, store_host, new_xml)
if username ~= store_username or store_host ~= host then
return nil;
end
user_xml = new_xml;
return true;
end;
get_user_xml = function (_, store_username, store_host)
if username ~= store_username or store_host ~= host then
return nil;
end
return user_xml;
end
};
end
local function get_selected_stores(query_params)
local selected_kv_stores, selected_archive_stores, export_pep_data = {}, {}, false;
if query_params.stores then
for store_name in query_params.stores:gmatch("[^,]+") do
local store_type = known_stores[store_name];
if store_type == "keyval" then
table.insert(selected_kv_stores, store_name);
elseif store_type == "archive" then
if store_name == "pep_data" then
export_pep_data = true;
else
table.insert(selected_archive_stores, store_name);
end
else
module:log("warn", "Unknown store: %s", store_name);
return 400;
end
end
end
return {
keyval = selected_kv_stores;
archive = selected_archive_stores;
export_pep_data = export_pep_data;
};
end
local function get_config_driver(store_name, host)
-- Fiddling to handle the 'pep_data' storage config override
if store_name:find("pep_", 1, true) == 1 then
store_name = "pep_data";
end
-- Return driver
return sm.get_driver(host, store_name);
end
local function handle_export_227(event)
local session = assert(event.session, "No session found");
local xep227_driver = sm.load_driver(session.host, "xep0227");
local username = session.username;
local user_xml = new_user_xml(session.username, session.host);
local query_params = http.formdecode(event.request.url.query or "");
local selected_stores = get_selected_stores(query_params);
for store_name in it.values(selected_stores.keyval) do
-- Open the source store that contains the data
local store = sm.open(session.host, store_name);
-- Read the current data
local data, err = store:get(username);
if data ~= nil or not err then
-- Initialize the destination store (XEP-0227 backed)
local target_store = xep227_driver:open_xep0227(store_name, nil, user_xml);
-- Transform the data and update user_xml (via the _set_user_xml callback)
if not target_store:set(username, data == nil and {} or data) then
return 500;
end
elseif err then
return 500;
end
end
if selected_stores.export_pep_data then
local pep_node_list = sm.open(session.host, "pep"):get(session.username);
if pep_node_list then
for node_name in it.keys(pep_node_list) do
table.insert(selected_stores.archive, "pep_"..node_name);
end
end
end
for store_name in it.values(selected_stores.archive) do
local source_driver = get_config_driver(store_name, session.host);
local source_archive = source_driver:open(store_name, "archive");
local dest_archive = xep227_driver:open_xep0227(store_name, "archive", user_xml);
local results_iter, results_err = source_archive:find(username);
if results_iter then
local count, errs = 0, 0;
for id, item, when, with in results_iter do
local ok, err = dest_archive:append(username, id, item, when, with);
if ok then
count = count + 1;
else
module:log("warn", "Error: %s", err);
errs = errs + 1;
end
if ( count + errs ) % 100 == 0 then
module:log("info", "%d items migrated, %d errors", count, errs);
end
end
elseif results_err then
module:log("warn", "Unable to read from '%s': %s", store_name, results_err);
return 500;
end
end
local xml_data = user_xml:get_user_xml(username, session.host);
if not xml_data or not xml_data:find("host/user") then
module:log("warn", "No data to export: %s", tostring(xml_data));
return 204;
end
event.response.headers["Content-Type"] = "application/xml";
return [[<?xml version="1.0" encoding="utf-8" ?>]]..tostring(xml_data);
end
local function generic_keyval_importer(username, host, store_name, source_store)
-- Read the current data
local data, err = source_store:get(username);
if data ~= nil or not err then
local target_store = sm.open(host, store_name);
-- Transform the data and update user_xml (via the _set_user_xml callback)
if not target_store:set(username, data == nil and {} or data) then
return 500;
end
module:log("debug", "Imported data for '%s' store", store_name);
elseif err then
return nil, err;
else
module:log("debug", "No data for store '%s'", store_name);
end
return true;
end
local function generic_archive_importer(username, host, store_name, source_archive)
local dest_driver = get_config_driver(store_name, host);
local dest_archive = dest_driver:open(store_name, "archive");
local results_iter, results_err = source_archive:find(username);
if results_iter then
local count, errs = 0, 0;
for id, item, when, with in source_archive:find(username) do
local ok, err = dest_archive:append(username, id, item, when, with);
if ok then
count = count + 1;
else
module:log("warn", "Error: %s", err);
errs = errs + 1;
end
if ( count + errs ) % 100 == 0 then
module:log("info", "%d items migrated, %d errors", count, errs);
end
end
elseif results_err then
module:log("warn", "Unable to read from '%s': %s", store_name, results_err);
return nil, "error reading from source archive";
end
return true;
end
local special_keyval_importers = {};
function special_keyval_importers.pep(username, host, store_name, store) --luacheck: ignore 212/store_name
local user_jid = jid_join(username, host);
local pep_service = mod_pep.get_pep_service(username);
local pep_nodes, store_err = store:get(username);
if not pep_nodes and store_err then
return nil, store_err;
end
local all_ok = true;
for node_name, node_config in pairs(pep_nodes) do
local ok, ret = pep_service:get_node_config(node_name, user_jid);
if not ok and ret == "item-not-found" then
-- Create node according to imported data
if node_config == true then node_config = {}; end
local create_ok, create_err = pep_service:create(node_name, user_jid, node_config.config);
if not create_ok then
module:log("warn", "Failed to create PEP node: %s", create_err);
all_ok = false;
end
end
end
return all_ok;
end
local special_archive_importers = setmetatable({}, {
__index = function (t, k)
if k:match("^pep_") then
return t.pep_data;
end
end;
});
function special_archive_importers.pep_data(username, host, store_name, source_archive)
local user_jid = jid_join(username, host);
local pep_service = mod_pep.get_pep_service(username);
local node_name = store_name:match("^pep_(.+)$");
if not node_name then
return nil, "invalid store name";
end
local results_iter, results_err = source_archive:find(username);
if results_iter then
local count, errs = 0, 0;
for id, item in source_archive:find(username) do
local wrapped_item = st.stanza("item", { xmlns = xmlns_pubsub, id = id })
:add_child(item);
local ok, err = pep_service:publish(node_name, user_jid, id, wrapped_item);
if not ok then
module:log("warn", "Failed to publish PEP item to '%s': %s", node_name, err, tostring(wrapped_item));
end
end
module:log("debug", "Imported %d PEP items (%d errors)", count, errs);
elseif results_err then
return nil, "store access error";
end
return true;
end
local function is_looking_like_xep227(xml_data)
if not xml_data or xml_data.name ~= "server-data"
or xml_data.attr.xmlns ~= "urn:xmpp:pie:0" then
return false;
end
-- Looks like 227, but check it has at least one host + user element
return not not xml_data:find("host/user");
end
local function handle_import_227(event)
local session = assert(event.session, "No session found");
local username = session.username;
local input_xml_raw = event.request.body;
local input_xml_parsed = xml.parse(input_xml_raw);
-- Some sanity checks
if not input_xml_parsed or not is_looking_like_xep227(input_xml_parsed) then
module:log("warn", "No data to import");
return 422;
end
-- Set the host and username of the import to the new account's user/host
input_xml_parsed:find("host").attr.jid = session.host;
input_xml_parsed:find("host/user").attr.name = username;
local user_xml = new_user_xml(session.username, session.host);
user_xml:set_user_xml(username, session.host, input_xml_parsed);
local xep227_driver = sm.load_driver(session.host, "xep0227");
local query_params = http.formdecode(event.request.url.query or "");
local selected_stores = get_selected_stores(query_params);
module:log("debug", "Importing %d keyval stores (%s)...", #selected_stores.keyval, table.concat(selected_stores.keyval, ", "));
for _, store_name in ipairs(selected_stores.keyval) do
module:log("debug", "Importing keyval store %s...", store_name);
-- Initialize the destination store (XEP-0227 backed)
local source_store = xep227_driver:open_xep0227(store_name, nil, user_xml);
local importer = special_keyval_importers[store_name] or generic_keyval_importer;
local ok, err = importer(username, session.host, store_name, source_store);
if not ok then
module:log("warn", "Importer for keyval store '%s' encountered error: %s", store_name, err or "<no error returned>");
return 500;
end
end
if selected_stores.export_pep_data then
local pep_store = xep227_driver:open_xep0227("pep", nil, user_xml);
local pep_node_list = pep_store:get(session.username);
if pep_node_list then
for node_name in it.keys(pep_node_list) do
table.insert(selected_stores.archive, "pep_"..node_name);
end
end
end
module:log("debug", "Importing %d archive stores (%s)...", #selected_stores.archive, table.concat(selected_stores.archive, ", "));
for store_name in it.values(selected_stores.archive) do
module:log("debug", "Importing archive store %s...", store_name);
local source_archive = xep227_driver:open_xep0227(store_name, "archive", user_xml);
local importer = special_archive_importers[store_name] or generic_archive_importer;
local ok, err = importer(username, session.host, store_name, source_archive);
if not ok then
module:log("warn", "Importer for archive store '%s' encountered error: %s", err or "<no error returned>");
return 500;
end
end
return 200;
end
---
local function check_credentials(request)
local auth_type, auth_data = string.match(request.headers.authorization or "", "^(%S+)%s(.+)$");
if not (auth_type and auth_data) then
return false;
end
if auth_type == "Bearer" then
return tokens.get_token_session(auth_data);
end
return nil;
end
local function check_auth(routes)
local function check_request_auth(event)
local session = check_credentials(event.request);
if not session then
event.response.headers.authorization = ("Bearer realm=%q"):format(module.host.."/"..module.name);
return false, 401;
end
event.session = session;
return true;
end
for route, handler in pairs(routes) do
routes[route] = function (event, ...)
local permit, code = check_request_auth(event);
if not permit then
return code;
end
return handler(event, ...);
end;
end
return routes;
end
module:provides("http", {
route = check_auth {
["GET /export"] = handle_export_227;
["PUT /import"] = handle_import_227;
};
});