Software / code / prosody
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plugins/mod_tls.lua @ 3962:c77eff3ac5e1
configure: Don't add -llua to LDFLAGS, it's unnecessary
| author | Matthew Wild <mwild1@gmail.com> |
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| date | Sun, 26 Dec 2010 05:00:45 +0000 |
| parent | 3583:ef86ba720f00 |
| child | 4157:1b5a8e071a80 |
| rev | line source |
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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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4 -- |
| 758 | 5 -- This project is MIT/X11 licensed. Please see the |
| 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 config = require "core.configmanager"; |
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10 local create_context = require "core.certmanager".create_context; |
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11 local st = require "util.stanza"; |
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12 |
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13 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption"); |
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14 local secure_s2s_only = module:get_option("s2s_require_encryption"); |
| 2933 | 15 local allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false; |
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16 |
| 2605 | 17 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls'; |
| 18 local starttls_attr = { xmlns = xmlns_starttls }; | |
| 19 local starttls_proceed = st.stanza("proceed", starttls_attr); | |
| 20 local starttls_failure = st.stanza("failure", starttls_attr); | |
| 21 local c2s_feature = st.stanza("starttls", starttls_attr); | |
| 22 local s2s_feature = st.stanza("starttls", starttls_attr); | |
| 23 if secure_auth_only then c2s_feature:tag("required"):up(); end | |
| 24 if secure_s2s_only then s2s_feature:tag("required"):up(); end | |
| 25 | |
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26 local global_ssl_ctx = prosody.global_ssl_ctx; |
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27 |
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28 local host = hosts[module.host]; |
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29 |
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30 local function can_do_tls(session) |
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31 if session.type == "c2s_unauthed" then |
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32 return session.conn.starttls and host.ssl_ctx_in; |
| 2933 | 33 elseif session.type == "s2sin_unauthed" and allow_s2s_tls then |
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34 return session.conn.starttls and host.ssl_ctx_in; |
| 2933 | 35 elseif session.direction == "outgoing" and allow_s2s_tls then |
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36 return session.conn.starttls and host.ssl_ctx; |
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37 end |
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38 return false; |
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39 end |
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40 |
| 2605 | 41 -- Hook <starttls/> |
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42 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event) |
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43 local origin = event.origin; |
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44 if can_do_tls(origin) then |
| 2605 | 45 (origin.sends2s or origin.send)(starttls_proceed); |
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46 origin:reset_stream(); |
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47 local host = origin.to_host or origin.host; |
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48 local ssl_ctx = host and hosts[host].ssl_ctx_in or global_ssl_ctx; |
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49 origin.conn:starttls(ssl_ctx); |
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50 origin.log("info", "TLS negotiation started for %s...", origin.type); |
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51 origin.secure = false; |
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52 else |
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53 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type); |
| 2605 | 54 (origin.sends2s or origin.send)(starttls_failure); |
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55 origin:close(); |
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56 end |
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57 return true; |
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58 end); |
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59 |
| 2605 | 60 -- Advertize stream feature |
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61 module:hook("stream-features", function(event) |
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62 local origin, features = event.origin, event.features; |
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63 if can_do_tls(origin) then |
| 2605 | 64 features:add_child(c2s_feature); |
| 65 end | |
| 66 end); | |
| 67 module:hook("s2s-stream-features", function(event) | |
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68 local origin, features = event.origin, event.features; |
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69 if can_do_tls(origin) then |
| 2605 | 70 features:add_child(s2s_feature); |
| 71 end | |
| 72 end); | |
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73 |
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74 -- For s2sout connections, start TLS if we can |
| 2605 | 75 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza) |
| 76 module:log("debug", "Received features element"); | |
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77 if can_do_tls(session) and stanza:child_with_ns(xmlns_starttls) then |
| 2605 | 78 module:log("%s is offering TLS, taking up the offer...", session.to_host); |
| 79 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>"); | |
| 80 return true; | |
| 81 end | |
| 82 end, 500); | |
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83 |
| 2605 | 84 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza) |
| 85 module:log("debug", "Proceeding with TLS on s2sout..."); | |
| 86 session:reset_stream(); | |
| 87 local ssl_ctx = session.from_host and hosts[session.from_host].ssl_ctx or global_ssl_ctx; | |
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88 session.conn:starttls(ssl_ctx); |
| 2605 | 89 session.secure = false; |
| 90 return true; | |
| 91 end); | |
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92 |
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93 function module.load() |
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94 local global_ssl_config = config.get("*", "core", "ssl"); |
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95 local ssl_config = config.get(module.host, "core", "ssl"); |
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96 local base_host = module.host:match("%.(.*)"); |
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97 if ssl_config == global_ssl_config and hosts[base_host] then |
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98 ssl_config = config.get(base_host, "core", "ssl"); |
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99 end |
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100 host.ssl_ctx = create_context(host.host, "client", ssl_config); -- for outgoing connections |
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101 host.ssl_ctx_in = create_context(host.host, "server", ssl_config); -- for incoming connections |
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102 end |
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103 |
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104 function module.unload() |
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105 host.ssl_ctx = nil; |
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106 host.ssl_ctx_in = nil; |
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107 end |
