prosody
c985536d5452
plugins/mod_saslauth.lua

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plugins/mod_saslauth.lua @ 2179:c985536d5452 sasl

Making mod_saslauth use the new SASL API.
author Tobias Markmann <tm@ayena.de>
date Fri, 28 Aug 2009 13:04:38 +0200
parent 1639:0914d128c55e
child 2193:8fbbdb11a520
comparison
equal deleted inserted replaced
2178:28d841403a21 2179:c985536d5452
31 local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl'; 31 local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl';
32 local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind'; 32 local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind';
33 local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas'; 33 local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas';
34 34
35 local new_sasl = require "util.sasl".new; 35 local new_sasl = require "util.sasl".new;
36
37 default_authentication_profile = {
38 plain = function(username, realm)
39 return usermanager_get_password(username, realm), true;
40 end
41 };
36 42
37 local function build_reply(status, ret, err_msg) 43 local function build_reply(status, ret, err_msg)
38 local reply = st.stanza(status, {xmlns = xmlns_sasl}); 44 local reply = st.stanza(status, {xmlns = xmlns_sasl});
39 if status == "challenge" then 45 if status == "challenge" then
40 log("debug", "%s", ret or ""); 46 log("debug", "%s", ret or "");
99 return session.send(build_reply("failure", "invalid-mechanism")); 105 return session.send(build_reply("failure", "invalid-mechanism"));
100 end 106 end
101 elseif stanza.attr.mechanism == "ANONYMOUS" then 107 elseif stanza.attr.mechanism == "ANONYMOUS" then
102 return session.send(build_reply("failure", "mechanism-too-weak")); 108 return session.send(build_reply("failure", "mechanism-too-weak"));
103 end 109 end
104 session.sasl_handler = new_sasl(stanza.attr.mechanism, session.host, credentials_callback); 110 local valid_mechanism = session.sasl_handler:select(stanza.attr.mechanism);
105 if not session.sasl_handler then 111 if not valid_mechanism then
106 return session.send(build_reply("failure", "invalid-mechanism")); 112 return session.send(build_reply("failure", "invalid-mechanism"));
107 end 113 end
108 elseif not session.sasl_handler then 114 elseif not session.sasl_handler then
109 return; -- FIXME ignoring out of order stanzas because ejabberd does 115 return; -- FIXME ignoring out of order stanzas because ejabberd does
110 end 116 end
116 session.sasl_handler = nil; 122 session.sasl_handler = nil;
117 session.send(build_reply("failure", "incorrect-encoding")); 123 session.send(build_reply("failure", "incorrect-encoding"));
118 return; 124 return;
119 end 125 end
120 end 126 end
121 local status, ret, err_msg = session.sasl_handler:feed(text); 127 local status, ret, err_msg = session.sasl_handler:process(text);
122 handle_status(session, status); 128 handle_status(session, status);
123 local s = build_reply(status, ret, err_msg); 129 local s = build_reply(status, ret, err_msg);
124 log("debug", "sasl reply: %s", tostring(s)); 130 log("debug", "sasl reply: %s", tostring(s));
125 session.send(s); 131 session.send(s);
126 end 132 end
136 function (session, features) 142 function (session, features)
137 if not session.username then 143 if not session.username then
138 if secure_auth_only and not session.secure then 144 if secure_auth_only and not session.secure then
139 return; 145 return;
140 end 146 end
147 session.sasl_handler = new_sasl(session.host, default_authentication_profile);
141 features:tag("mechanisms", mechanisms_attr); 148 features:tag("mechanisms", mechanisms_attr);
142 -- TODO: Provide PLAIN only if TLS is active, this is a SHOULD from the introduction of RFC 4616. This behavior could be overridden via configuration but will issuing a warning or so. 149 -- TODO: Provide PLAIN only if TLS is active, this is a SHOULD from the introduction of RFC 4616. This behavior could be overridden via configuration but will issuing a warning or so.
143 if config.get(session.host or "*", "core", "anonymous_login") then 150 if config.get(session.host or "*", "core", "anonymous_login") then
144 features:tag("mechanism"):text("ANONYMOUS"):up(); 151 features:tag("mechanism"):text("ANONYMOUS"):up();
145 else 152 else
146 mechanisms = usermanager_get_supported_methods(session.host or "*"); 153 for k, v in pairs(session.sasl_handler:mechanisms()) do
147 for k, v in pairs(mechanisms) do 154 features:tag("mechanism"):text(v):up();
148 features:tag("mechanism"):text(k):up();
149 end 155 end
150 end 156 end
151 features:up(); 157 features:up();
152 else 158 else
153 features:tag("bind", bind_attr):tag("required"):up():up(); 159 features:tag("bind", bind_attr):tag("required"):up():up();