-- COPYING file in the source package for more information.
--
-module("dependencies", package.seeall)
-
-function softreq(...) local ok, lib = pcall(require, ...); if ok then return lib; else return nil, lib; end end
+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
-function missingdep(name, sources, msg)
+local function missingdep(name, sources, msg)
print("");
print("**************************");
print("Prosody was unable to find "..tostring(name));
end
end;
-function check_dependencies()
+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"
return not fatal;
end
-function log_warnings()
+local function log_warnings()
+ if _VERSION > "Lua 5.1" then
+ 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
log("error", "This version of LuaSec contains a known bug that causes disconnects, see http://prosody.im/doc/depends");
end
end
+ local lxp = softreq"lxp";
if lxp then
if not pcall(lxp.new, { StartDoctypeDecl = false }) then
log("error", "The version of LuaExpat on your system leaves Prosody "
.."vulnerable to denial-of-service attacks. You should upgrade to "
- .."LuaExpat 1.1.1 or higher as soon as possible. See "
+ .."LuaExpat 1.3.0 or higher as soon as possible. See "
+ .."http://prosody.im/doc/depends#luaexpat for more information.");
+ end
+ if not lxp.new({}).getcurrentbytecount then
+ 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 "
.."http://prosody.im/doc/depends#luaexpat for more information.");
end
end
end
-return _M;
+return {
+ softreq = softreq;
+ missingdep = missingdep;
+ check_dependencies = check_dependencies;
+ log_warnings = log_warnings;
+};