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plugins/mod_tls.lua @ 6519:367db22cf7d2
mod_saslauth: Make it easier to support multiple channel binding methonds
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 19 Nov 2014 14:45:20 +0100 |
parent | 6487:edc63dc72566 |
child | 6521:29c7586665f5 |
rev | line source |
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1523
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Remove version number from copyright headers
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1 -- Prosody IM |
2923
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Update copyright headers for 2010
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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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certmanager, hostmanager, mod_tls: Move responsibility for creating per-host SSL contexts to mod_tls, meaning reloading certs is now as trivial as reloading mod_tls
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9 local create_context = require "core.certmanager".create_context; |
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10 local st = require "util.stanza"; |
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11 |
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mod_legacyauth, mod_saslauth, mod_tls: Pass require_encryption as default option to s2s_require_encryption so the later overrides the former
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12 local c2s_require_encryption = module:get_option("c2s_require_encryption", module:get_option("require_encryption")); |
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13 local s2s_require_encryption = module:get_option("s2s_require_encryption"); |
2933 | 14 local allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false; |
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15 local s2s_secure_auth = module:get_option("s2s_secure_auth"); |
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16 |
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17 if s2s_secure_auth and s2s_require_encryption == false then |
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18 module:log("warn", "s2s_secure_auth implies s2s_require_encryption, but s2s_require_encryption is set to false"); |
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19 s2s_require_encryption = true; |
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20 end |
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21 |
2605 | 22 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls'; |
23 local starttls_attr = { xmlns = xmlns_starttls }; | |
24 local starttls_proceed = st.stanza("proceed", starttls_attr); | |
25 local starttls_failure = st.stanza("failure", starttls_attr); | |
26 local c2s_feature = st.stanza("starttls", starttls_attr); | |
27 local s2s_feature = st.stanza("starttls", starttls_attr); | |
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28 if c2s_require_encryption then c2s_feature:tag("required"):up(); end |
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29 if s2s_require_encryption then s2s_feature:tag("required"):up(); end |
2605 | 30 |
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31 local hosts = prosody.hosts; |
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32 local host = hosts[module.host]; |
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33 |
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34 local ssl_ctx_c2s, ssl_ctx_s2sout, ssl_ctx_s2sin; |
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35 do |
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36 local NULL, err = {}; |
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37 local global = module:context("*"); |
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38 local parent = module:context(module.host:match("%.(.*)$")); |
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39 |
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40 local parent_ssl = parent:get_option("ssl"); |
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41 local host_ssl = module:get_option("ssl", parent_ssl); |
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42 |
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43 local global_c2s = global:get_option("c2s_ssl", NULL); |
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44 local parent_c2s = parent:get_option("c2s_ssl", NULL); |
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45 local host_c2s = module:get_option("c2s_ssl", parent_c2s); |
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46 |
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47 local global_s2s = global:get_option("s2s_ssl", NULL); |
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48 local parent_s2s = parent:get_option("s2s_ssl", NULL); |
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49 local host_s2s = module:get_option("s2s_ssl", parent_s2s); |
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50 |
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51 ssl_ctx_c2s, err = create_context(host.host, "server", host_c2s, host_ssl, global_c2s); -- for incoming client connections |
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52 if err then module:log("error", "Error creating context for c2s: %s", err); end |
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53 |
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54 ssl_ctx_s2sin, err = create_context(host.host, "server", host_s2s, host_ssl, global_s2s); -- for incoming server connections |
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55 ssl_ctx_s2sout = create_context(host.host, "client", host_s2s, host_ssl, global_s2s); -- for outgoing server connections |
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56 if err then module:log("error", "Error creating context for s2s: %s", err); end -- Both would have the same issue |
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57 end |
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58 |
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59 local function can_do_tls(session) |
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60 if not session.conn.starttls then |
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61 return false; |
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62 elseif session.ssl_ctx then |
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63 return true; |
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64 end |
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65 if session.type == "c2s_unauthed" then |
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66 session.ssl_ctx = ssl_ctx_c2s; |
2933 | 67 elseif session.type == "s2sin_unauthed" and allow_s2s_tls then |
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68 session.ssl_ctx = ssl_ctx_s2sin; |
2933 | 69 elseif session.direction == "outgoing" and allow_s2s_tls then |
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70 session.ssl_ctx = ssl_ctx_s2sout; |
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71 else |
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72 return false; |
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73 end |
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74 return session.ssl_ctx; |
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75 end |
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76 |
2605 | 77 -- Hook <starttls/> |
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78 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event) |
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79 local origin = event.origin; |
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80 if can_do_tls(origin) then |
2605 | 81 (origin.sends2s or origin.send)(starttls_proceed); |
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82 origin:reset_stream(); |
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83 origin.conn:starttls(origin.ssl_ctx); |
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84 origin.log("debug", "TLS negotiation started for %s...", origin.type); |
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85 origin.secure = false; |
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86 else |
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87 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type); |
2605 | 88 (origin.sends2s or origin.send)(starttls_failure); |
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89 origin:close(); |
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90 end |
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91 return true; |
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92 end); |
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93 |
2605 | 94 -- Advertize stream feature |
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95 module:hook("stream-features", function(event) |
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96 local origin, features = event.origin, event.features; |
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97 if can_do_tls(origin) then |
2605 | 98 features:add_child(c2s_feature); |
99 end | |
100 end); | |
101 module:hook("s2s-stream-features", function(event) | |
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102 local origin, features = event.origin, event.features; |
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103 if can_do_tls(origin) then |
2605 | 104 features:add_child(s2s_feature); |
105 end | |
106 end); | |
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107 |
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108 -- For s2sout connections, start TLS if we can |
2605 | 109 module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza) |
110 module:log("debug", "Received features element"); | |
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111 if can_do_tls(session) and stanza:get_child("starttls", xmlns_starttls) then |
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112 module:log("debug", "%s is offering TLS, taking up the offer...", session.to_host); |
2605 | 113 session.sends2s("<starttls xmlns='"..xmlns_starttls.."'/>"); |
114 return true; | |
115 end | |
116 end, 500); | |
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117 |
2605 | 118 module:hook_stanza(xmlns_starttls, "proceed", function (session, stanza) |
119 module:log("debug", "Proceeding with TLS on s2sout..."); | |
120 session:reset_stream(); | |
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121 session.conn:starttls(session.ssl_ctx); |
2605 | 122 session.secure = false; |
123 return true; | |
124 end); |