prosody
8946052e12d2
core/certmanager.lua

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core/certmanager.lua @ 6844:8946052e12d2

prosodyctl check: Warn if encryption is required but LuaSec is unavailable
author Kim Alvefur <zash@zash.se>
date Thu, 24 Sep 2015 20:02:00 +0200
parent 6779:6236668da30a
child 6903:5ff42d85d4d5
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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 --
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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 local softreq = require"util.dependencies".softreq;
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10 local ssl = softreq"ssl";
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11 if not ssl then
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12 return {
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13 create_context = function ()
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14 return nil, "LuaSec (required for encryption) was not found";
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15 end;
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16 reload_ssl_config = function () end;
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17 }
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18 end
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19
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20 local configmanager = require "core.configmanager";
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21 local log = require "util.logger".init("certmanager");
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22 local ssl_context = ssl.context or softreq"ssl.context";
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23 local ssl_x509 = ssl.x509 or softreq"ssl.x509";
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24 local ssl_newcontext = ssl.newcontext;
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25 local new_config = require"util.sslconfig".new;
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26
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27 local tostring = tostring;
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28 local pairs = pairs;
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29 local type = type;
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30 local io_open = io.open;
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31 local select = select;
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32
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33 local prosody = prosody;
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34 local resolve_path = require"util.paths".resolve_relative_path;
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35 local config_path = prosody.paths.config;
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36
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37 local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
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38 local luasec_version = luasec_major * 100 + luasec_minor;
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39 local luasec_has = {
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40 -- TODO If LuaSec ever starts exposing these things itself, use that instead
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41 cipher_server_preference = luasec_version >= 2;
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42 no_ticket = luasec_version >= 4;
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43 no_compression = luasec_version >= 5;
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44 single_dh_use = luasec_version >= 2;
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45 single_ecdh_use = luasec_version >= 2;
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46 };
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47
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48 local _ENV = nil;
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49
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50 -- Global SSL options if not overridden per-host
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51 local global_ssl_config = configmanager.get("*", "ssl");
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52
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53 -- Built-in defaults
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54 local core_defaults = {
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55 capath = "/etc/ssl/certs";
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56 depth = 9;
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57 protocol = "tlsv1+";
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58 verify = (ssl_x509 and { "peer", "client_once", }) or "none";
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59 options = {
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60 cipher_server_preference = luasec_has.cipher_server_preference;
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61 no_ticket = luasec_has.no_ticket;
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62 no_compression = luasec_has.no_compression and configmanager.get("*", "ssl_compression") ~= true;
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63 single_dh_use = luasec_has.single_dh_use;
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64 single_ecdh_use = luasec_has.single_ecdh_use;
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65 };
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66 verifyext = { "lsec_continue", "lsec_ignore_purpose" };
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67 curve = "secp384r1";
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68 ciphers = "HIGH+kEDH:HIGH+kEECDH:HIGH:!PSK:!SRP:!3DES:!aNULL";
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69 }
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70 local path_options = { -- These we pass through resolve_path()
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71 key = true, certificate = true, cafile = true, capath = true, dhparam = true
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72 }
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73
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74 if luasec_version < 5 and ssl_x509 then
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75 -- COMPAT mw/luasec-hg
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76 for i=1,#core_defaults.verifyext do -- Remove lsec_ prefix
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77 core_defaults.verify[#core_defaults.verify+1] = core_defaults.verifyext[i]:sub(6);
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78 end
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79 end
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80
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81 local function create_context(host, mode, ...)
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82 local cfg = new_config();
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83 cfg:apply(core_defaults);
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84 cfg:apply(global_ssl_config);
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85 cfg:apply({
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86 mode = mode,
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87 -- We can't read the password interactively when daemonized
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88 password = function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
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89 });
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90
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91 for i = select('#', ...), 1, -1 do
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92 cfg:apply(select(i, ...));
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93 end
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94 local user_ssl_config = cfg:final();
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95
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96 if mode == "server" then
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97 if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
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98 if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
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99 end
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100
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101 for option in pairs(path_options) do
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102 if type(user_ssl_config[option]) == "string" then
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103 user_ssl_config[option] = resolve_path(config_path, user_ssl_config[option]);
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104 end
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105 end
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106
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107 -- LuaSec expects dhparam to be a callback that takes two arguments.
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108 -- We ignore those because it is mostly used for having a separate
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109 -- set of params for EXPORT ciphers, which we don't have by default.
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110 if type(user_ssl_config.dhparam) == "string" then
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111 local f, err = io_open(user_ssl_config.dhparam);
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112 if not f then return nil, "Could not open DH parameters: "..err end
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113 local dhparam = f:read("*a");
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114 f:close();
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115 user_ssl_config.dhparam = function() return dhparam; end
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116 end
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117
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118 local ctx, err = ssl_newcontext(user_ssl_config);
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119
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120 -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
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121 -- of it ourselves (W/A for #x)
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parents: 3670
diff changeset
122 if ctx and user_ssl_config.ciphers then
c69cbac4178f certmanager: Support setting ciphers in SSL config. LuaSec apparently ignores the documented ciphers option.
Waqas Hussain <waqas20@gmail.com>
parents: 3670
diff changeset
123 local success;
6565
ffc0a57889aa certmanager: Add locals for ssl.context and ssl.x509
Kim Alvefur <zash@zash.se>
parents: 6564
diff changeset
124 success, err = ssl_context.setcipher(ctx, user_ssl_config.ciphers);
4359
c69cbac4178f certmanager: Support setting ciphers in SSL config. LuaSec apparently ignores the documented ciphers option.
Waqas Hussain <waqas20@gmail.com>
parents: 3670
diff changeset
125 if not success then ctx = nil; end
c69cbac4178f certmanager: Support setting ciphers in SSL config. LuaSec apparently ignores the documented ciphers option.
Waqas Hussain <waqas20@gmail.com>
parents: 3670
diff changeset
126 end
c69cbac4178f certmanager: Support setting ciphers in SSL config. LuaSec apparently ignores the documented ciphers option.
Waqas Hussain <waqas20@gmail.com>
parents: 3670
diff changeset
127
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
128 if not ctx then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
129 err = err or "invalid ssl config"
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
130 local file = err:match("^error loading (.-) %(");
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
131 if file then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
132 if file == "private key" then
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
diff changeset
133 file = user_ssl_config.key or "your private key";
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
134 elseif file == "certificate" then
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
diff changeset
135 file = user_ssl_config.certificate or "your certificate file";
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
136 end
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
137 local reason = err:match("%((.+)%)$") or "some reason";
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
138 if reason == "Permission denied" then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
139 reason = "Check that the permissions allow Prosody to read this file.";
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
140 elseif reason == "No such file or directory" then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
141 reason = "Check that the path is correct, and the file exists.";
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
142 elseif reason == "system lib" then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
143 reason = "Previous error (see logs), or other system error.";
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
144 elseif reason == "(null)" or not reason then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
145 reason = "Check that the file exists and the permissions are correct";
2630
e8fc67b73820 certmanager: Bring back the friendly errors when failing to load the key/certificate file
Matthew Wild <mwild1@gmail.com>
parents: 2564
diff changeset
146 else
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
147 reason = "Reason: "..tostring(reason):lower();
2630
e8fc67b73820 certmanager: Bring back the friendly errors when failing to load the key/certificate file
Matthew Wild <mwild1@gmail.com>
parents: 2564
diff changeset
148 end
4925
55f6e0673e33 certmanager: Add quotes around cert file path when logging.
Waqas Hussain <waqas20@gmail.com>
parents: 4900
diff changeset
149 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
150 else
4855
a31ea431d906 certmanager: Adjust error messages to be non-specific about 'host' (so we can specify a service name instead ffor SSL)
Matthew Wild <mwild1@gmail.com>
parents: 4656
diff changeset
151 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
3355
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
152 end
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3402
diff changeset
153 end
6526
873538f0b18c certmanager, mod_tls: Return final ssl config as third return value (fix for c6caaa440e74, portmanager assumes non-falsy second return value is an error) (thanks deoren)
Kim Alvefur <zash@zash.se>
parents: 6520
diff changeset
154 return ctx, err, user_ssl_config;
2554
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155 end
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6570
diff changeset
157 local function reload_ssl_config()
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
diff changeset
158 global_ssl_config = configmanager.get("*", "ssl");
6566
1f396f0fe832 certmanager: Improve "detection" of features that depend on LuaSec version
Kim Alvefur <zash@zash.se>
parents: 6565
diff changeset
159 if luasec_has.no_compression then
6080
b7d1607df87d certmanager: Update ssl_compression when config is reloaded
Kim Alvefur <zash@zash.se>
parents: 6079
diff changeset
160 core_defaults.options.no_compression = configmanager.get("*", "ssl_compression") ~= true;
b7d1607df87d certmanager: Update ssl_compression when config is reloaded
Kim Alvefur <zash@zash.se>
parents: 6079
diff changeset
161 end
2554
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
162 end
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
164 prosody.events.add_handler("config-reloaded", reload_ssl_config);
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6570
diff changeset
166 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6570
diff changeset
167 create_context = create_context;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6570
diff changeset
168 reload_ssl_config = reload_ssl_config;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6570
diff changeset
169 };