File

tools/openfire2prosody.lua @ 11665:148075532021

net.server_epoll: Prevent stack overflow of opportunistic writes net.http.files serving a big enough file on a fast enough connection with opportunistic_writes enabled could trigger a stack overflow through repeatedly serving more data that immediately gets sent, draining the buffer and triggering more data to be sent. This also blocked the server on a single task until completion or an error. This change prevents nested opportunistic writes, which should prevent the stack overflow, at the cost of reduced download speed, but this is unlikely to be noticeable outside of Gbit networks. Speed at the cost of blocking other processing is not worth it, especially with the risk of stack overflow.
author Kim Alvefur <zash@zash.se>
date Sun, 11 Jul 2021 09:39:21 +0200
parent 5776:bd0ff8ae98a8
child 13142:879a6a33c21b
line wrap: on
line source

#!/usr/bin/env lua
-- Prosody IM
-- Copyright (C) 2008-2009 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

package.path = package.path..";../?.lua";
package.cpath = package.cpath..";../?.so"; -- needed for util.pposix used in datamanager

local my_name = arg[0];
if my_name:match("[/\\]") then
	package.path = package.path..";"..my_name:gsub("[^/\\]+$", "../?.lua");
	package.cpath = package.cpath..";"..my_name:gsub("[^/\\]+$", "../?.so");
end

-- ugly workaround for getting datamanager to work outside of prosody :(
prosody = { };
prosody.platform = "unknown";
if os.getenv("WINDIR") then
	prosody.platform = "windows";
elseif package.config:sub(1,1) == "/" then
	prosody.platform = "posix";
end

local parse_xml = require "util.xml".parse;

-----------------------------------------------------------------------

package.loaded["util.logger"] = {init = function() return function() end; end}
local dm = require "util.datamanager"
dm.set_data_path("data");

local arg = ...;
local help = "/? -? ? /h -h /help -help --help";
if not arg or help:find(arg, 1, true) then
	print([[Openfire importer for Prosody

  Usage: openfire2prosody.lua filename.xml hostname

]]);
	os.exit(1);
end

local host = select(2, ...) or "localhost";

local file = assert(io.open(arg));
local data = assert(file:read("*a"));
file:close();

local xml = assert(parse_xml(data));

assert(xml.name == "Openfire", "The input file is not an Openfire XML export");

local substatus_mapping = { ["0"] = "none", ["1"] = "to", ["2"] = "from", ["3"] = "both" };

for _,tag in ipairs(xml.tags) do
	if tag.name == "User" then
		local username, password, roster;

		for _,tag in ipairs(tag.tags) do
			if tag.name == "Username" then
				username = tag:get_text();
			elseif tag.name == "Password" then
				password = tag:get_text();
			elseif tag.name == "Roster" then
				roster = {};
				local pending = {};
				for _,tag in ipairs(tag.tags) do
					if tag.name == "Item" then
						local jid = assert(tag.attr.jid, "Roster item has no JID");
						if tag.attr.substatus ~= "-1" then
							local item = {};
							item.name = tag.attr.name;
							item.subscription = assert(substatus_mapping[tag.attr.substatus], "invalid substatus");
							item.ask = tag.attr.askstatus == "0" and "subscribe" or nil;

							local groups = {};
							for _,tag in ipairs(tag) do
								if tag.name == "Group" then
									groups[tag:get_text()] = true;
								end
							end
							item.groups = groups;
							roster[jid] = item;
						end
						if tag.attr.recvstatus == "1" then pending[jid] = true; end
					end
				end

				if next(pending) then
					roster[false] = { pending = pending };
				end
			end
		end

		assert(username and password, "No username or password");

		local ret, err = dm.store(username, host, "accounts", {password = password});
		print("["..(err or "success").."] stored account: "..username.."@"..host.." = "..password);

		if roster then
			local ret, err = dm.store(username, host, "roster", roster);
			print("["..(err or "success").."] stored roster: "..username.."@"..host.." = "..password);
		end
	end
end