1 local type, tostring, pairs, ipairs = type, tostring, pairs, ipairs;
2 local t_insert, t_concat = table.insert, table.concat;
3 local s_format = string.format;
5 local oid_xmppaddr = "1.3.6.1.5.5.7.8.5"; -- [XMPP-CORE]
6 local oid_dnssrv = "1.3.6.1.5.5.7.8.7"; -- [SRV-ID]
8 local idna_to_ascii = require "util.encodings".idna.to_ascii;
14 local ssl_config = {};
15 local ssl_config_mt = {__index=ssl_config};
20 distinguished_name = "distinguished_name",
21 req_extensions = "certrequest",
22 x509_extensions = "selfsigned",
25 distinguished_name = {
27 -- stateOrProvinceName = "",
28 localityName = "The Internet",
29 organizationName = "Your Organisation",
30 organizationalUnitName = "XMPP Department",
31 commonName = "example.com",
32 emailAddress = "xmpp@example.com",
35 basicConstraints = "CA:FALSE",
36 keyUsage = "digitalSignature,keyEncipherment",
37 extendedKeyUsage = "serverAuth,clientAuth",
38 subjectAltName = "@subject_alternative_name",
41 basicConstraints = "CA:TRUE",
42 subjectAltName = "@subject_alternative_name",
44 subject_alternative_name = {
53 "stateOrProvinceName";
57 "organizationalUnitName";
61 _M._DN_order = DN_order;
62 function ssl_config:serialize()
64 for k, t in pairs(self) do
65 s = s .. ("[%s]\n"):format(k);
66 if k == "subject_alternative_name" then
67 for san, n in pairs(t) do
69 s = s .. s_format("%s.%d = %s\n", san, i -1, n[i]);
72 elseif k == "distinguished_name" then
77 s = s .. ("%s = %s\n"):format(k, v);
81 for k, v in pairs(t) do
82 s = s .. ("%s = %s\n"):format(k, v);
90 local function utf8string(s)
91 -- This is how we tell openssl not to encode UTF-8 strings as fake Latin1
92 return s_format("FORMAT:UTF8,UTF8:%s", s);
95 local function ia5string(s)
96 return s_format("IA5STRING:%s", s);
100 utf8string = utf8string,
101 ia5string = ia5string,
104 function ssl_config:add_dNSName(host)
105 t_insert(self.subject_alternative_name.DNS, idna_to_ascii(host));
108 function ssl_config:add_sRVName(host, service)
109 t_insert(self.subject_alternative_name.otherName,
110 s_format("%s;%s", oid_dnssrv, ia5string("_" .. service .."." .. idna_to_ascii(host))));
113 function ssl_config:add_xmppAddr(host)
114 t_insert(self.subject_alternative_name.otherName,
115 s_format("%s;%s", oid_xmppaddr, utf8string(host)));
118 function ssl_config:from_prosody(hosts, config, certhosts)
119 -- TODO Decide if this should go elsewhere
120 local found_matching_hosts = false;
121 for i = 1,#certhosts do
122 local certhost = certhosts[i];
123 for name in pairs(hosts) do
124 if name == certhost or name:sub(-1-#certhost) == "."..certhost then
125 found_matching_hosts = true;
126 self:add_dNSName(name);
127 --print(name .. "#component_module: " .. (config.get(name, "component_module") or "nil"));
128 if config.get(name, "component_module") == nil then
129 self:add_sRVName(name, "xmpp-client");
131 --print(name .. "#anonymous_login: " .. tostring(config.get(name, "anonymous_login")));
132 if not (config.get(name, "anonymous_login") or
133 config.get(name, "authentication") == "anonymous") then
134 self:add_sRVName(name, "xmpp-server");
136 self:add_xmppAddr(name);
140 if not found_matching_hosts then
141 return nil, "no-matching-hosts";
145 do -- Lua to shell calls.
146 local function shell_escape(s)
147 return s:gsub("'",[['\'']]);
150 local function serialize(f,o)
151 local r = {"openssl", f};
152 for k,v in pairs(o) do
153 if type(k) == "string" then
154 t_insert(r, ("-%s"):format(k));
156 t_insert(r, ("'%s'"):format(shell_escape(tostring(v))));
160 for _,v in ipairs(o) do
161 t_insert(r, ("'%s'"):format(shell_escape(tostring(v))));
163 return t_concat(r, " ");
166 local os_execute = os.execute;
168 __index=function(_,f)
169 return function(opts)
170 return 0 == os_execute(serialize(f, type(opts) == "table" and opts or {}));