prosody
5b048ccd106f
plugins/mod_tls.lua

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plugins/mod_tls.lua @ 9971:5b048ccd106f 0.11

mod_tls: Log debug message for each kind of TLS context created Creating TLS contexts triggers a lot of messages from certmanager that don't really describe their purpose. This is meant to provide hints about that.
author Kim Alvefur <zash@zash.se>
date Tue, 23 Apr 2019 19:13:50 +0200
parent 8131:c8e3a0caa0a9
child 9975:ca01c449357f
child 10783:950082c1669e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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diff changeset
1 -- Prosody IM
2923
b7049746bd29 Update copyright headers for 2010
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2 -- Copyright (C) 2008-2010 Matthew Wild
b7049746bd29 Update copyright headers for 2010
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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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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675d65036f31 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 rawgetopt = require"core.configmanager".rawget;
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5b664c8fef86 forgot to commit mod_tls, oops :)
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11 local st = require "util.stanza";
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12
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edc63dc72566 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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13 local c2s_require_encryption = module:get_option("c2s_require_encryption", module:get_option("require_encryption"));
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14 local s2s_require_encryption = module:get_option("s2s_require_encryption");
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15 local allow_s2s_tls = module:get_option("s2s_allow_encryption") ~= false;
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16 local s2s_secure_auth = module:get_option("s2s_secure_auth");
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17
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18 if s2s_secure_auth and s2s_require_encryption == false then
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19 module:log("warn", "s2s_secure_auth implies s2s_require_encryption, but s2s_require_encryption is set to false");
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20 s2s_require_encryption = true;
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21 end
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22
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23 local xmlns_starttls = 'urn:ietf:params:xml:ns:xmpp-tls';
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24 local starttls_attr = { xmlns = xmlns_starttls };
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25 local starttls_initiate= st.stanza("starttls", starttls_attr);
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26 local starttls_proceed = st.stanza("proceed", starttls_attr);
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27 local starttls_failure = st.stanza("failure", starttls_attr);
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28 local c2s_feature = st.stanza("starttls", starttls_attr);
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29 local s2s_feature = st.stanza("starttls", starttls_attr);
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30 if c2s_require_encryption then c2s_feature:tag("required"):up(); end
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31 if s2s_require_encryption then s2s_feature:tag("required"):up(); end
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32
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7838acadb0fa mod_announce, mod_auth_anonymous, mod_c2s, mod_c2s, mod_component, mod_iq, mod_message, mod_presence, mod_tls: Access prosody.{hosts,bare_sessions,full_sessions} instead of the old globals
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33 local hosts = prosody.hosts;
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34 local host = hosts[module.host];
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35
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36 local ssl_ctx_c2s, ssl_ctx_s2sout, ssl_ctx_s2sin;
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37 local ssl_cfg_c2s, ssl_cfg_s2sout, ssl_cfg_s2sin;
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38
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39 function module.load()
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40 local NULL, err = {};
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41 local modhost = module.host;
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42 local parent = modhost:match("%.(.*)$");
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43
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44 local parent_ssl = rawgetopt(parent, "ssl") or NULL;
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45 local host_ssl = rawgetopt(modhost, "ssl") or parent_ssl;
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46
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47 local global_c2s = rawgetopt("*", "c2s_ssl") or NULL;
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48 local parent_c2s = rawgetopt(parent, "c2s_ssl") or NULL;
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49 local host_c2s = rawgetopt(modhost, "c2s_ssl") or parent_c2s;
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50
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51 local global_s2s = rawgetopt("*", "s2s_ssl") or NULL;
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52 local parent_s2s = rawgetopt(parent, "s2s_ssl") or NULL;
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53 local host_s2s = rawgetopt(modhost, "s2s_ssl") or parent_s2s;
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54
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55 module:log("debug", "Creating context for c2s");
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56 ssl_ctx_c2s, err, ssl_cfg_c2s = create_context(host.host, "server", host_c2s, host_ssl, global_c2s); -- for incoming client connections
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57 if not ssl_ctx_c2s then module:log("error", "Error creating context for c2s: %s", err); end
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58
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59 module:log("debug", "Creating context for s2sout");
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60 ssl_ctx_s2sout, err, ssl_cfg_s2sout = create_context(host.host, "client", host_s2s, host_ssl, global_s2s); -- for outgoing server connections
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61 if not ssl_ctx_s2sout then module:log("error", "Error creating contexts for s2sout: %s", err); end
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62
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63 module:log("debug", "Creating context for s2sin");
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64 ssl_ctx_s2sin, err, ssl_cfg_s2sin = create_context(host.host, "server", host_s2s, host_ssl, global_s2s); -- for incoming server connections
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65 if not ssl_ctx_s2sin then module:log("error", "Error creating contexts for s2sin: %s", err); end
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66 end
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67
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68 module:hook_global("config-reloaded", module.load);
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69
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70 local function can_do_tls(session)
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71 if not session.conn.starttls then
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72 if not session.secure then
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73 session.log("debug", "Underlying connection does not support STARTTLS");
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74 end
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75 return false;
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76 elseif session.ssl_ctx ~= nil then
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77 return session.ssl_ctx;
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78 end
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79 if session.type == "c2s_unauthed" then
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80 session.ssl_ctx = ssl_ctx_c2s;
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81 session.ssl_cfg = ssl_cfg_c2s;
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82 elseif session.type == "s2sin_unauthed" and allow_s2s_tls then
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83 session.ssl_ctx = ssl_ctx_s2sin;
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84 session.ssl_cfg = ssl_cfg_s2sin;
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85 elseif session.direction == "outgoing" and allow_s2s_tls then
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86 session.ssl_ctx = ssl_ctx_s2sout;
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87 session.ssl_cfg = ssl_cfg_s2sout;
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88 else
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89 session.log("debug", "Unknown session type, don't know which TLS context to use");
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90 return false;
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91 end
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92 if not session.ssl_ctx then
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93 session.log("debug", "Should be able to do TLS but no context available");
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94 return false;
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95 end
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96 return session.ssl_ctx;
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97 end
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98
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99 -- Hook <starttls/>
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100 module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
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101 local origin = event.origin;
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102 if can_do_tls(origin) then
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103 (origin.sends2s or origin.send)(starttls_proceed);
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104 origin:reset_stream();
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105 origin.conn:starttls(origin.ssl_ctx);
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1b5a8e071a80 mod_tls: Drop 'TLS negotiation started for ...' to debug level from info
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106 origin.log("debug", "TLS negotiation started for %s...", origin.type);
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107 origin.secure = false;
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108 else
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109 origin.log("warn", "Attempt to start TLS, but TLS is not available on this %s connection", origin.type);
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110 (origin.sends2s or origin.send)(starttls_failure);
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111 origin:close();
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112 end
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113 return true;
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114 end);
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115
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116 -- Advertize stream feature
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117 module:hook("stream-features", function(event)
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118 local origin, features = event.origin, event.features;
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119 if can_do_tls(origin) then
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120 features:add_child(c2s_feature);
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121 end
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122 end);
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123 module:hook("s2s-stream-features", function(event)
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124 local origin, features = event.origin, event.features;
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125 if can_do_tls(origin) then
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126 features:add_child(s2s_feature);
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127 end
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128 end);
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129
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130 -- For s2sout connections, start TLS if we can
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131 module:hook_tag("http://etherx.jabber.org/streams", "features", function (session, stanza)
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132 module:log("debug", "Received features element");
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133 if can_do_tls(session) and stanza:get_child("starttls", xmlns_starttls) then
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134 module:log("debug", "%s is offering TLS, taking up the offer...", session.to_host);
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135 session.sends2s(starttls_initiate);
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136 return true;
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137 end
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138 end, 500);
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139
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140 module:hook_tag(xmlns_starttls, "proceed", function (session, stanza) -- luacheck: ignore 212/stanza
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141 if session.type == "s2sout_unauthed" and can_do_tls(session) then
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142 module:log("debug", "Proceeding with TLS on s2sout...");
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143 session:reset_stream();
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144 session.conn:starttls(session.ssl_ctx);
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145 session.secure = false;
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146 return true;
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147 end
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148 end);