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util/dependencies.lua @ 9478:bd178ed0459b
util.poll: Fix inverted logic
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 11 Oct 2018 18:56:11 +0200 |
parent | 8235:7d9a2c200736 |
child | 9494:b19f676203fd |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local function softreq(...) local ok, lib = pcall(require, ...); if ok then return lib; else return nil, lib; end end -- Required to be able to find packages installed with luarocks if not softreq "luarocks.loader" then -- LuaRocks 2.x softreq "luarocks.require"; -- LuaRocks <1.x end local function missingdep(name, sources, msg) print(""); print("**************************"); print("Prosody was unable to find "..tostring(name)); print("This package can be obtained in the following ways:"); print(""); local longest_platform = 0; for platform in pairs(sources) do longest_platform = math.max(longest_platform, #platform); end for platform, source in pairs(sources) do print("", platform..":"..(" "):rep(4+longest_platform-#platform)..source); end print(""); print(msg or (name.." is required for Prosody to run, so we will now exit.")); print("More help can be found on our website, at https://prosody.im/doc/depends"); print("**************************"); print(""); end -- COMPAT w/pre-0.8 Debian: The Debian config file used to use -- util.ztact, which has been removed from Prosody in 0.8. This -- is to log an error for people who still use it, so they can -- update their configs. package.preload["util.ztact"] = function () if not package.loaded["core.loggingmanager"] then error("util.ztact has been removed from Prosody and you need to fix your config " .."file. More information can be found at https://prosody.im/doc/packagers#ztact", 0); else error("module 'util.ztact' has been deprecated in Prosody 0.8."); end end; local function check_dependencies() if _VERSION < "Lua 5.1" then print "***********************************" print("Unsupported Lua version: ".._VERSION); print("At least Lua 5.1 is required."); print "***********************************" return false; end local fatal; local lxp = softreq "lxp" if not lxp then missingdep("luaexpat", { ["Debian/Ubuntu"] = "sudo apt-get install lua-expat"; ["luarocks"] = "luarocks install luaexpat"; ["Source"] = "http://matthewwild.co.uk/projects/luaexpat/"; }); fatal = true; end local socket = softreq "socket" if not socket then missingdep("luasocket", { ["Debian/Ubuntu"] = "sudo apt-get install lua-socket"; ["luarocks"] = "luarocks install luasocket"; ["Source"] = "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/"; }); fatal = true; end local lfs, err = softreq "lfs" if not lfs then missingdep("luafilesystem", { ["luarocks"] = "luarocks install luafilesystem"; ["Debian/Ubuntu"] = "sudo apt-get install lua-filesystem"; ["Source"] = "http://www.keplerproject.org/luafilesystem/"; }); fatal = true; end local ssl = softreq "ssl" if not ssl then missingdep("LuaSec", { ["Debian/Ubuntu"] = "sudo apt-get install lua-sec"; ["luarocks"] = "luarocks install luasec"; ["Source"] = "https://github.com/brunoos/luasec"; }, "SSL/TLS support will not be available"); end local bit = _G.bit32 or softreq"bit"; if not bit then missingdep("lua-bitops", { ["Debian/Ubuntu"] = "sudo apt-get install lua-bitop"; ["luarocks"] = "luarocks install luabitop"; ["Source"] = "http://bitop.luajit.org/"; }, "WebSocket support will not be available"); end local encodings, err = softreq "util.encodings" if not encodings then if err:match("module '[^']*' not found") then missingdep("util.encodings", { ["Windows"] = "Make sure you have encodings.dll from the Prosody distribution in util/"; ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/encodings.so"; }); else print "***********************************" print("util/encodings couldn't be loaded. Check that you have a recent version of libidn"); print "" print("The full error was:"); print(err) print "***********************************" end fatal = true; end local hashes, err = softreq "util.hashes" if not hashes then if err:match("module '[^']*' not found") then missingdep("util.hashes", { ["Windows"] = "Make sure you have hashes.dll from the Prosody distribution in util/"; ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/hashes.so"; }); else print "***********************************" print("util/hashes couldn't be loaded. Check that you have a recent version of OpenSSL (libcrypto in particular)"); print "" print("The full error was:"); print(err) print "***********************************" end fatal = true; end return not fatal; end local function log_warnings() if _VERSION > "Lua 5.2" then prosody.log("warn", "Support for %s is experimental, please report any issues", _VERSION); end local ssl = softreq"ssl"; if ssl then local major, minor, veryminor, patched = ssl._VERSION:match("(%d+)%.(%d+)%.?(%d*)(M?)"); if not major or ((tonumber(major) == 0 and (tonumber(minor) or 0) <= 3 and (tonumber(veryminor) or 0) <= 2) and patched ~= "M") then prosody.log("error", "This version of LuaSec contains a known bug that causes disconnects, see https://prosody.im/doc/depends"); end end local lxp = softreq"lxp"; if lxp then if not pcall(lxp.new, { StartDoctypeDecl = false }) then prosody.log("error", "The version of LuaExpat on your system leaves Prosody " .."vulnerable to denial-of-service attacks. You should upgrade to " .."LuaExpat 1.3.0 or higher as soon as possible. See " .."https://prosody.im/doc/depends#luaexpat for more information."); end if not lxp.new({}).getcurrentbytecount then prosody.log("error", "The version of LuaExpat on your system does not support " .."stanza size limits, which may leave servers on untrusted " .."networks (e.g. the internet) vulnerable to denial-of-service " .."attacks. You should upgrade to LuaExpat 1.3.0 or higher as " .."soon as possible. See " .."https://prosody.im/doc/depends#luaexpat for more information."); end end end return { softreq = softreq; missingdep = missingdep; check_dependencies = check_dependencies; log_warnings = log_warnings; };