2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local function softreq(...) local ok, lib = pcall(require, ...); if ok then return lib; else return nil, lib; end end
11 -- Required to be able to find packages installed with luarocks
12 if not softreq "luarocks.loader" then -- LuaRocks 2.x
13 softreq "luarocks.require"; -- LuaRocks <1.x
16 local function missingdep(name, sources, msg)
18 print("**************************");
19 print("Prosody was unable to find "..tostring(name));
20 print("This package can be obtained in the following ways:");
22 local longest_platform = 0;
23 for platform in pairs(sources) do
24 longest_platform = math.max(longest_platform, #platform);
26 for platform, source in pairs(sources) do
27 print("", platform..":"..(" "):rep(4+longest_platform-#platform)..source);
30 print(msg or (name.." is required for Prosody to run, so we will now exit."));
31 print("More help can be found on our website, at https://prosody.im/doc/depends");
32 print("**************************");
36 -- COMPAT w/pre-0.8 Debian: The Debian config file used to use
37 -- util.ztact, which has been removed from Prosody in 0.8. This
38 -- is to log an error for people who still use it, so they can
39 -- update their configs.
40 package.preload["util.ztact"] = function ()
41 if not package.loaded["core.loggingmanager"] then
42 error("util.ztact has been removed from Prosody and you need to fix your config "
43 .."file. More information can be found at https://prosody.im/doc/packagers#ztact", 0);
45 error("module 'util.ztact' has been deprecated in Prosody 0.8.");
49 local function check_dependencies()
50 if _VERSION < "Lua 5.1" then
51 print "***********************************"
52 print("Unsupported Lua version: ".._VERSION);
53 print("At least Lua 5.1 is required.");
54 print "***********************************"
60 local lxp = softreq "lxp"
63 missingdep("luaexpat", {
64 ["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-expat0";
65 ["luarocks"] = "luarocks install luaexpat";
66 ["Source"] = "http://www.keplerproject.org/luaexpat/";
71 local socket = softreq "socket"
74 missingdep("luasocket", {
75 ["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-socket2";
76 ["luarocks"] = "luarocks install luasocket";
77 ["Source"] = "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/";
82 local lfs, err = softreq "lfs"
84 missingdep("luafilesystem", {
85 ["luarocks"] = "luarocks install luafilesystem";
86 ["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-filesystem0";
87 ["Source"] = "http://www.keplerproject.org/luafilesystem/";
92 local ssl = softreq "ssl"
95 missingdep("LuaSec", {
96 ["Debian/Ubuntu"] = "https://prosody.im/download/start#debian_and_ubuntu";
97 ["luarocks"] = "luarocks install luasec";
98 ["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/";
99 }, "SSL/TLS support will not be available");
102 local encodings, err = softreq "util.encodings"
103 if not encodings then
104 if err:match("module '[^']*' not found") then
105 missingdep("util.encodings", { ["Windows"] = "Make sure you have encodings.dll from the Prosody distribution in util/";
106 ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/encodings.so";
109 print "***********************************"
110 print("util/encodings couldn't be loaded. Check that you have a recent version of libidn");
112 print("The full error was:");
114 print "***********************************"
119 local hashes, err = softreq "util.hashes"
121 if err:match("module '[^']*' not found") then
122 missingdep("util.hashes", { ["Windows"] = "Make sure you have hashes.dll from the Prosody distribution in util/";
123 ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/hashes.so";
126 print "***********************************"
127 print("util/hashes couldn't be loaded. Check that you have a recent version of OpenSSL (libcrypto in particular)");
129 print("The full error was:");
131 print "***********************************"
138 local function log_warnings()
139 if _VERSION > "Lua 5.1" then
140 prosody.log("warn", "Support for %s is experimental, please report any issues", _VERSION);
142 local ssl = softreq"ssl";
144 local major, minor, veryminor, patched = ssl._VERSION:match("(%d+)%.(%d+)%.?(%d*)(M?)");
145 if not major or ((tonumber(major) == 0 and (tonumber(minor) or 0) <= 3 and (tonumber(veryminor) or 0) <= 2) and patched ~= "M") then
146 prosody.log("error", "This version of LuaSec contains a known bug that causes disconnects, see https://prosody.im/doc/depends");
149 local lxp = softreq"lxp";
151 if not pcall(lxp.new, { StartDoctypeDecl = false }) then
152 prosody.log("error", "The version of LuaExpat on your system leaves Prosody "
153 .."vulnerable to denial-of-service attacks. You should upgrade to "
154 .."LuaExpat 1.3.0 or higher as soon as possible. See "
155 .."https://prosody.im/doc/depends#luaexpat for more information.");
157 if not lxp.new({}).getcurrentbytecount then
158 prosody.log("error", "The version of LuaExpat on your system does not support "
159 .."stanza size limits, which may leave servers on untrusted "
160 .."networks (e.g. the internet) vulnerable to denial-of-service "
161 .."attacks. You should upgrade to LuaExpat 1.3.0 or higher as "
162 .."soon as possible. See "
163 .."https://prosody.im/doc/depends#luaexpat for more information.");
170 missingdep = missingdep;
171 check_dependencies = check_dependencies;
172 log_warnings = log_warnings;