Annotate

plugins/mod_saslauth.lua @ 3913:e748d29b18d6

mod_pubsub: Fix capabilities table from some debugging
author Matthew Wild <mwild1@gmail.com>
date Tue, 21 Dec 2010 03:30:18 +0000
parent 3733:26571a99f6e6
child 3961:94d9fb07c49c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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cccd610a0ef9 Insert copyright/license headers
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10
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11 local st = require "util.stanza";
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12 local sm_bind_resource = require "core.sessionmanager".bind_resource;
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13 local sm_make_authenticated = require "core.sessionmanager".make_authenticated;
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14 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
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15 local base64 = require "util.encodings".base64;
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16
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17 local cert_verify_identity = require "util.x509".verify_identity;
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18
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19 local nodeprep = require "util.encodings".stringprep.nodeprep;
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20 local usermanager_get_sasl_handler = require "core.usermanager".get_sasl_handler;
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21 local t_concat, t_insert = table.concat, table.insert;
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22 local tostring = tostring;
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23
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24 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
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25 local anonymous_login = module:get_option("anonymous_login");
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26 local allow_unencrypted_plain_auth = module:get_option("allow_unencrypted_plain_auth")
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27
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28 local log = module._log;
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30 local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl';
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31 local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind';
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32 local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas';
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34 local new_sasl = require "util.sasl".new;
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35
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36 local anonymous_authentication_profile = {
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37 anonymous = function(username, realm)
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38 return true; -- for normal usage you should always return true here
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39 end
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40 };
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41
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42 local function build_reply(status, ret, err_msg)
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43 local reply = st.stanza(status, {xmlns = xmlns_sasl});
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44 if status == "challenge" then
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45 --log("debug", "CHALLENGE: %s", ret or "");
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46 reply:text(base64.encode(ret or ""));
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47 elseif status == "failure" then
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48 reply:tag(ret):up();
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49 if err_msg then reply:tag("text"):text(err_msg); end
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50 elseif status == "success" then
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51 --log("debug", "SUCCESS: %s", ret or "");
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52 reply:text(base64.encode(ret or ""));
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53 else
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54 module:log("error", "Unknown sasl status: %s", status);
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55 end
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56 return reply;
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57 end
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58
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59 local function handle_status(session, status, ret, err_msg)
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60 if status == "failure" then
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61 session.sasl_handler = session.sasl_handler:clean_clone();
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62 elseif status == "success" then
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63 local username = nodeprep(session.sasl_handler.username);
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64
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65 local ok, err = sm_make_authenticated(session, session.sasl_handler.username);
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66 if ok then
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67 session.sasl_handler = nil;
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68 session:reset_stream();
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69 else
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70 module:log("warn", "SASL succeeded but username was invalid");
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71 session.sasl_handler = session.sasl_handler:clean_clone();
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72 return "failure", "not-authorized", "User authenticated successfully, but username was invalid";
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73 end
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74 end
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75 return status, ret, err_msg;
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76 end
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77
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78 local function sasl_process_cdata(session, stanza)
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79 local text = stanza[1];
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80 if text then
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81 text = base64.decode(text);
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82 --log("debug", "AUTH: %s", text:gsub("[%z\001-\008\011\012\014-\031]", " "));
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83 if not text then
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84 session.sasl_handler = nil;
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85 session.send(build_reply("failure", "incorrect-encoding"));
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86 return true;
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87 end
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88 end
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89 local status, ret, err_msg = session.sasl_handler:process(text);
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90 status, ret, err_msg = handle_status(session, status, ret, err_msg);
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91 local s = build_reply(status, ret, err_msg);
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92 log("debug", "sasl reply: %s", tostring(s));
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93 session.send(s);
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94 return true;
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95 end
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96
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97 module:hook_stanza(xmlns_sasl, "success", function (session, stanza)
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98 if session.type ~= "s2sout_unauthed" or session.external_auth ~= "attempting" then return; end
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99 module:log("debug", "SASL EXTERNAL with %s succeeded", session.to_host);
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100 session.external_auth = "succeeded"
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101 session:reset_stream();
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102
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103 local default_stream_attr = {xmlns = "jabber:server", ["xmlns:stream"] = "http://etherx.jabber.org/streams",
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104 ["xmlns:db"] = 'jabber:server:dialback', version = "1.0", to = session.to_host, from = session.from_host};
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105 session.sends2s("<?xml version='1.0'?>");
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106 session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
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107
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108 s2s_make_authenticated(session, session.to_host);
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109 return true;
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110 end)
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111
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112 module:hook_stanza(xmlns_sasl, "failure", function (session, stanza)
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113 if session.type ~= "s2sout_unauthed" or session.external_auth ~= "attempting" then return; end
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114
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115 module:log("info", "SASL EXTERNAL with %s failed", session.to_host)
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116 -- TODO: Log the failure reason
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117 session.external_auth = "failed"
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118 end, 500)
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119
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120 module:hook_stanza(xmlns_sasl, "failure", function (session, stanza)
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121 -- TODO: Dialback wasn't loaded. Do something useful.
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122 end, 90)
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123
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124 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
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125 if session.type ~= "s2sout_unauthed" or not session.secure then return; end
337391d34b70 s2s: SASL EXTERNAL
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parents: 3553
diff changeset
126
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
127 local mechanisms = stanza:get_child("mechanisms", xmlns_sasl)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
128 if mechanisms then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
129 for mech in mechanisms:childtags() do
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
130 if mech[1] == "EXTERNAL" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
131 module:log("debug", "Initiating SASL EXTERNAL with %s", session.to_host);
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
132 local reply = st.stanza("auth", {xmlns = xmlns_sasl, mechanism = "EXTERNAL"});
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
133 reply:text(base64.encode(session.from_host))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
134 session.sends2s(reply)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
135 session.external_auth = "attempting"
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
136 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
137 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
138 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
139 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
140 end, 150);
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
141
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
142 local function s2s_external_auth(session, stanza)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
143 local mechanism = stanza.attr.mechanism;
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
144
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
145 if not session.secure then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
146 if mechanism == "EXTERNAL" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
147 session.sends2s(build_reply("failure", "encryption-required"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
148 else
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
149 session.sends2s(build_reply("failure", "invalid-mechanism"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
150 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
151 return true;
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
152 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
153
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
154 if mechanism ~= "EXTERNAL" or session.cert_chain_status ~= "valid" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
155 session.sends2s(build_reply("failure", "invalid-mechanism"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
156 return true;
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
157 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
158
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
159 local text = stanza[1]
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
160 if not text then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
161 session.sends2s(build_reply("failure", "malformed-request"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
162 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
163 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
164
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
165 -- Either the value is "=" and we've already verified the external
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
166 -- cert identity, or the value is a string and either matches the
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
167 -- from_host (
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
168
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
169 text = base64.decode(text)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
170 if not text then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
171 session.sends2s(build_reply("failure", "incorrect-encoding"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
172 return true;
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
173 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
174
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
175 if session.cert_identity_status == "valid" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
176 if text ~= "" and text ~= session.from_host then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
177 session.sends2s(build_reply("failure", "invalid-authzid"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
178 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
179 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
180 else
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
181 if text == "" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
182 session.sends2s(build_reply("failure", "invalid-authzid"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
183 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
184 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
185
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
186 local cert = session.conn:socket():getpeercertificate()
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
187 if (cert_verify_identity(text, "xmpp-server", cert)) then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
188 session.cert_identity_status = "valid"
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
189 else
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
190 session.cert_identity_status = "invalid"
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
191 session.sends2s(build_reply("failure", "invalid-authzid"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
192 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
193 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
194 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
195
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
196 session.external_auth = "succeeded"
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
197
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
198 if not session.from_host then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
199 session.from_host = text;
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
200 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
201 session.sends2s(build_reply("success"))
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
202 module:log("info", "Accepting SASL EXTERNAL identity from %s", text or session.from_host);
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
203 s2s_make_authenticated(session, text or session.from_host)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
204 session:reset_stream();
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
205 return true
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
206 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
207
3552
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
208 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:auth", function(event)
3535
b953b0c0f203 mod_saslauth: Updated to use the new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 3524
diff changeset
209 local session, stanza = event.origin, event.stanza;
3651
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
210 if session.type == "s2sin_unauthed" then
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
211 return s2s_external_auth(session, stanza)
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
212 end
337391d34b70 s2s: SASL EXTERNAL
Paul Aurich <paul@darkrain42.org>
parents: 3553
diff changeset
213
3535
b953b0c0f203 mod_saslauth: Updated to use the new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 3524
diff changeset
214 if session.type ~= "c2s_unauthed" then return; end
b953b0c0f203 mod_saslauth: Updated to use the new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 3524
diff changeset
215
3553
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
216 if session.sasl_handler and session.sasl_handler.selected then
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
217 session.sasl_handler = nil; -- allow starting a new SASL negotiation before completing an old one
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
218 end
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
219 if not session.sasl_handler then
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
220 if anonymous_login then
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
221 session.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
222 else
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
223 session.sasl_handler = usermanager_get_sasl_handler(module.host);
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
224 end
1f0af8572f15 mod_saslauth: Allow restarting SASL negotiation from scratch.
Waqas Hussain <waqas20@gmail.com>
parents: 3552
diff changeset
225 end
3552
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
226 local mechanism = stanza.attr.mechanism;
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
227 if anonymous_login then
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
228 if mechanism ~= "ANONYMOUS" then
3535
b953b0c0f203 mod_saslauth: Updated to use the new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 3524
diff changeset
229 session.send(build_reply("failure", "invalid-mechanism"));
b953b0c0f203 mod_saslauth: Updated to use the new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 3524
diff changeset
230 return true;
935
efe3eaaeff34 Fixed: mod_saslauth: "anonymous_login" currently makes SASL ANONYMOUS an exclusive mechanism. Corrected advertised mechanisms and error replies.
Waqas Hussain <waqas20@gmail.com>
parents: 934
diff changeset
231 end
3552
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
232 elseif mechanism == "ANONYMOUS" then
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
233 session.send(build_reply("failure", "mechanism-too-weak"));
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
234 return true;
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
235 end
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
236 if not session.secure and (secure_auth_only or (mechanism == "PLAIN" and not allow_unencrypted_plain_auth)) then
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
237 session.send(build_reply("failure", "encryption-required"));
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
238 return true;
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
239 end
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
240 local valid_mechanism = session.sasl_handler:select(mechanism);
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
241 if not valid_mechanism then
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
242 session.send(build_reply("failure", "invalid-mechanism"));
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
243 return true;
295
bb078eb1f1de mod_saslauth: Code cleanup
Waqas Hussain <waqas20@gmail.com>
parents: 293
diff changeset
244 end
3551
4fba723ab235 mod_saslauth: Moved SASL mechanism selection and CDATA handling into separate functions.
Waqas Hussain <waqas20@gmail.com>
parents: 3548
diff changeset
245 return sasl_process_cdata(session, stanza);
3552
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
246 end);
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
247 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:response", function(event)
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
248 local session = event.origin;
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
249 if not(session.sasl_handler and session.sasl_handler.selected) then
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
250 session.send(build_reply("failure", "not-authorized", "Out of order SASL element"));
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
251 return true;
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
252 end
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
253 return sasl_process_cdata(session, event.stanza);
8ad09efc19cc mod_saslauth: Separated processing of <auth/> and <response/> elements, and return proper error on out-of-order <response/> elements.
Waqas Hussain <waqas20@gmail.com>
parents: 3551
diff changeset
254 end);
3548
cd8d1cacc65b mod_saslauth: Handle SASL <abort/> properly.
Waqas Hussain <waqas20@gmail.com>
parents: 3535
diff changeset
255 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:abort", function(event)
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256 local session = event.origin;
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257 session.sasl_handler = nil;
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258 session.send(build_reply("failure", "aborted"));
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259 return true;
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260 end);
284
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261
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262 local mechanisms_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-sasl' };
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263 local bind_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-bind' };
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264 local xmpp_session_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-session' };
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265 module:hook("stream-features", function(event)
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266 local origin, features = event.origin, event.features;
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267 if not origin.username then
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268 if secure_auth_only and not origin.secure then
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269 return;
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270 end
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271 if anonymous_login then
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272 origin.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
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273 else
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274 origin.sasl_handler = usermanager_get_sasl_handler(module.host);
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275 end
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276 features:tag("mechanisms", mechanisms_attr);
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277 for mechanism in pairs(origin.sasl_handler:mechanisms()) do
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278 if mechanism ~= "PLAIN" or origin.secure or allow_unencrypted_plain_auth then
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279 features:tag("mechanism"):text(mechanism):up();
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280 end
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281 end
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282 features:up();
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283 else
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284 features:tag("bind", bind_attr):tag("required"):up():up();
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285 features:tag("session", xmpp_session_attr):tag("optional"):up():up();
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286 end
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287 end);
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288
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289 module:hook("s2s-stream-features", function(event)
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290 local origin, features = event.origin, event.features;
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291 if origin.secure and origin.type == "s2sin_unauthed" then
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292 -- Offer EXTERNAL if chain is valid and either we didn't validate
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293 -- the identity or it passed.
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294 if origin.cert_chain_status == "valid" and origin.cert_identity_status ~= "invalid" then --TODO: Configurable
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295 module:log("debug", "Offering SASL EXTERNAL")
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296 features:tag("mechanisms", { xmlns = xmlns_sasl })
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297 :tag("mechanism"):text("EXTERNAL")
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298 :up():up();
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299 end
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300 end
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301 end);
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302
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303 module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-bind:bind", function(event)
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304 local origin, stanza = event.origin, event.stanza;
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305 local resource;
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306 if stanza.attr.type == "set" then
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307 local bind = stanza.tags[1];
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308 resource = bind:child_with_name("resource");
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309 resource = resource and #resource.tags == 0 and resource[1] or nil;
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310 end
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311 local success, err_type, err, err_msg = sm_bind_resource(origin, resource);
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312 if success then
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313 origin.send(st.reply(stanza)
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314 :tag("bind", { xmlns = xmlns_bind })
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315 :tag("jid"):text(origin.full_jid));
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316 origin.log("debug", "Resource bound: %s", origin.full_jid);
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317 else
3523
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318 origin.send(st.error_reply(stanza, err_type, err, err_msg));
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319 origin.log("debug", "Resource bind failed: %s", err_msg or err);
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320 end
3523
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321 return true;
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322 end);
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diff changeset
323
3523
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324 module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-session:session", function(event)
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325 event.origin.send(st.reply(event.stanza));
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326 return true;
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327 end);