prosody
cdc292d201fc
plugins/mod_tls.lua

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plugins/mod_tls.lua @ 2872:cdc292d201fc

mod_tls: Don't offer TLS on hosts that don't have any certs
author Matthew Wild <mwild1@gmail.com>
date Fri, 12 Feb 2010 21:33:22 +0000
parent 2854:ce8ce431c2b8
child 2877:1edeb8fe7d14
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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841d61be198f Remove version number from copyright headers
Matthew Wild <mwild1@gmail.com>
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diff changeset
1 -- Prosody IM
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90ce865eebd8 Update copyright notices for 2009
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 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
b1885732e979 GPL->MIT!
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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 local st = require "util.stanza";
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ba08b8a4eeef Abstract connections with "connection listeners"
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10
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11 local xmlns_stream = 'http://etherx.jabber.org/streams';
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12 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
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13
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14 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
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15 local secure_s2s_only = module:get_option("s2s_require_encryption");
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16
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17 local host = hosts[module.host];
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18
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19 module:add_handler("c2s_unauthed", "starttls", xmlns_starttls,
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20 function (session, stanza)
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21 if session.conn.starttls and host.ssl_ctx_in then
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13e2bd256a20 Fixed mod_tls to use session.send for sending stanzas
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22 session.send(st.stanza("proceed", { xmlns = xmlns_starttls }));
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23 session:reset_stream();
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24 if session.host and hosts[session.host].ssl_ctx_in then
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25 session.conn.set_sslctx(hosts[session.host].ssl_ctx_in);
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26 end
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27 session.conn.starttls();
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28 session.log("info", "TLS negotiation started...");
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29 session.secure = false;
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30 else
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31 session.log("warn", "Attempt to start TLS, but TLS is not available on this connection");
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32 (session.sends2s or session.send)(st.stanza("failure", { xmlns = xmlns_starttls }));
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33 session:close();
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34 end
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35 end);
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36
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37 module:add_handler("s2sin_unauthed", "starttls", xmlns_starttls,
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38 function (session, stanza)
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39 if session.conn.starttls and host.ssl_ctx_in then
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40 session.sends2s(st.stanza("proceed", { xmlns = xmlns_starttls }));
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41 session:reset_stream();
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42 if session.to_host and hosts[session.to_host].ssl_ctx_in then
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43 session.conn.set_sslctx(hosts[session.to_host].ssl_ctx_in);
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44 end
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45 session.conn.starttls();
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46 session.log("info", "TLS negotiation started for incoming s2s...");
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47 session.secure = false;
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48 else
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49 session.log("warn", "Attempt to start TLS, but TLS is not available on this s2s connection");
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50 (session.sends2s or session.send)(st.stanza("failure", { xmlns = xmlns_starttls }));
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51 session:close();
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52 end
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53 end);
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54
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55
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56 local starttls_attr = { xmlns = xmlns_starttls };
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57 module:add_event_hook("stream-features",
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58 function (session, features)
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59 if session.conn.starttls then
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60 features:tag("starttls", starttls_attr);
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61 if secure_auth_only then
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62 features:tag("required"):up():up();
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63 else
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64 features:up();
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65 end
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66 end
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67 end);
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68
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69 module:hook("s2s-stream-features",
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70 function (data)
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71 local session, features = data.session, data.features;
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72 if session.to_host and session.conn.starttls then
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73 features:tag("starttls", starttls_attr);
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74 if secure_s2s_only then
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75 features:tag("required"):up():up();
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76 else
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77 features:up();
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78 end
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79 end
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80 end);
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81
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82 -- For s2sout connections, start TLS if we can
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83 module:hook_stanza(xmlns_stream, "features",
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84 function (session, stanza)
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85 module:log("debug", "Received features element");
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3d4c703d9333 mod_tls: Don't try to start TLS if we can't actually do it (thanks Florob)
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86 if session.conn.starttls and stanza:child_with_ns(xmlns_starttls) then
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87 module:log("%s is offering TLS, taking up the offer...", session.to_host);
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88 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>");
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89 return true;
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90 end
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91 end, 500);
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92
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93 module:hook_stanza(xmlns_starttls, "proceed",
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94 function (session, stanza)
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95 module:log("debug", "Proceeding with TLS on s2sout...");
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96 local format, to_host, from_host = string.format, session.to_host, session.from_host;
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97 session:reset_stream();
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98 session.conn.starttls(true);
1926
e1c5b537f240 mod_tls: Mark sessions as not secure when negotiating outward TLS, so they get marked secure later. Fixes missing (encrypted) for outgoing sessions in s2s:show(). Thanks albert, McKael :)
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99 session.secure = false;
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100 return true;
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101 end);