util.pluginloader: Return full file path from internal file loader on success, not...
[prosody.git] / util / dependencies.lua
index d2b4a2f317c2c98be0b20410749c2da541b6d2f4..9371521caeca1817320af115c5d2160639b05ec2 100644 (file)
-local fatal;
+-- 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; end end
+module("dependencies", package.seeall)
 
-local function missingdep(name, sources, msg)
+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)
        print("");
        print("**************************");
        print("Prosody was unable to find "..tostring(name));
        print("This package can be obtained in the following ways:");
        print("");
-       for k,v in pairs(sources) do
-               print("", k, v);
+       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 http://.../doc/depends");
+       print("More help can be found on our website, at http://prosody.im/doc/depends");
        print("**************************");
        print("");
 end
 
-local lxp = softreq "lxp"
-
-if not lxp then
-       missingdep("luaexpat", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-expat0"; ["luarocks"] = "luarocks install luaexpat"; });
-       fatal = true;
-end
-
-local socket = softreq "socket"
-
-if not socket then
-       missingdep("luasocket", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-socket2"; ["luarocks"] = "luarocks install luasocket"; });
-       fatal = true;
-end
+function check_dependencies()
+       local fatal;
+       
+       local lxp = softreq "lxp"
+       
+       if not lxp then
+               missingdep("luaexpat", {
+                               ["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-expat0";
+                               ["luarocks"] = "luarocks install luaexpat";
+                               ["Source"] = "http://www.keplerproject.org/luaexpat/";
+                       });
+               fatal = true;
+       end
+       
+       local socket = softreq "socket"
        
-local ssl = softreq "ssl"
+       if not socket then
+               missingdep("luasocket", {
+                               ["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-socket2";
+                               ["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 liblua5.1-filesystem0";
+                               ["Source"] = "http://www.keplerproject.org/luafilesystem/";
+                       });
+               fatal = true;
+       end
+       
+       local ssl = softreq "ssl"
+       
+       if not ssl then
+               missingdep("LuaSec", {
+                               ["Debian/Ubuntu"] = "http://prosody.im/download/start#debian_and_ubuntu";
+                               ["luarocks"] = "luarocks install luasec";
+                               ["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/";
+                       }, "SSL/TLS support will not be available");
+       end
+       
+       local encodings, err = softreq "util.encodings"
+       if not encodings then
+               if err:match("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
 
-if not ssl then
-       missingdep("LuaSec", { ["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/" }, "SSL/TLS support will not be available");
+       local hashes, err = softreq "util.hashes"
+       if not hashes then
+               if err:match("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 md5 = softreq "md5";
-
-if not md5 then
-       missingdep("MD5", { ["luarocks"] = "luarocks install md5"; ["Source"] = "http://luaforge.net/frs/?group_id=155" });     
-       fatal = true;
+function log_warnings()
+       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
 end
 
-
-if fatal then os.exit(1); end
+return _M;