1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
-- 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.
--
module("dependencies", package.seeall)
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("");
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://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 http://prosody.im/doc/packagers#ztact", 0);
else
error("module 'util.ztact' has been deprecated in Prosody 0.8.");
end
end;
function check_dependencies()
if _VERSION ~= "Lua 5.1" then
print "***********************************"
print("Unsupported Lua version: ".._VERSION);
print("Only Lua 5.1 is supported.");
print "***********************************"
return false;
end
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"
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;
elseif not _G.socket then
-- COMPAT Code expecting LuaSocket to export as a global
_G.socket = socket;
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");
elseif not _G.ssl then
_G.ssl = ssl;
_G.ssl.context = require "ssl.context";
_G.ssl.x509 = softreq "ssl.x509";
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
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
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
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 1.3.0 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;
|
