prosody
2f65de21ff56
core/certmanager.lua

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core/certmanager.lua @ 6547:2f65de21ff56

certmanager: Make global variable access explicit
author Matthew Wild <mwild1@gmail.com>
date Tue, 20 Jan 2015 11:29:38 +0000
parent 6526:873538f0b18c
child 6564:bcf32653cab7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 configmanager = require "core.configmanager";
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10 local log = require "util.logger".init("certmanager");
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11 local ssl = _G.ssl;
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12 local ssl_newcontext = ssl and ssl.newcontext;
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13 local new_config = require"util.sslconfig".new;
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14
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15 local tostring = tostring;
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16 local pairs = pairs;
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17 local type = type;
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18 local io_open = io.open;
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19 local select = select;
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20
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21 local prosody = prosody;
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22 local resolve_path = require"util.paths".resolve_relative_path;
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23 local config_path = prosody.paths.config;
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24
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25 local luasec_has_noticket, luasec_has_verifyext, luasec_has_no_compression;
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26 if ssl then
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27 local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
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28 luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
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29 luasec_has_verifyext = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
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30 luasec_has_no_compression = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
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31 end
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32
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33 module "certmanager"
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34
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35 -- Global SSL options if not overridden per-host
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36 local global_ssl_config = configmanager.get("*", "ssl");
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37
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38 -- Built-in defaults
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39 local core_defaults = {
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40 capath = "/etc/ssl/certs";
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41 protocol = "tlsv1+";
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42 verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
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43 options = {
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44 cipher_server_preference = true;
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45 no_ticket = luasec_has_noticket;
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46 no_compression = luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true;
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47 -- Has no_compression? Then it has these too...
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48 single_dh_use = luasec_has_no_compression;
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49 single_ecdh_use = luasec_has_no_compression;
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50 };
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51 verifyext = { "lsec_continue", "lsec_ignore_purpose" };
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52 curve = "secp384r1";
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53 ciphers = "HIGH+kEDH:HIGH+kEECDH:HIGH:!PSK:!SRP:!3DES:!aNULL";
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54 }
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55 local path_options = { -- These we pass through resolve_path()
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56 key = true, certificate = true, cafile = true, capath = true, dhparam = true
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57 }
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58
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59 if ssl and not luasec_has_verifyext and ssl.x509 then
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60 -- COMPAT mw/luasec-hg
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61 for i=1,#core_defaults.verifyext do -- Remove lsec_ prefix
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62 core_defaults.verify[#core_defaults.verify+1] = core_defaults.verifyext[i]:sub(6);
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63 end
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64 end
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65
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66 function create_context(host, mode, ...)
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67 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
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68
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69 local cfg = new_config();
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70 cfg:apply(core_defaults);
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71 cfg:apply(global_ssl_config);
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72 cfg:apply({
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73 mode = mode,
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74 -- We can't read the password interactively when daemonized
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75 password = function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
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76 });
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77
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78 for i = select('#', ...), 1, -1 do
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79 cfg:apply(select(i, ...));
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80 end
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81 local user_ssl_config = cfg:final();
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82
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83 if mode == "server" then
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84 if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
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85 if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
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86 end
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87
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88 for option in pairs(path_options) do
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89 if type(user_ssl_config[option]) == "string" then
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90 user_ssl_config[option] = resolve_path(config_path, user_ssl_config[option]);
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91 end
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92 end
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93
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94 -- LuaSec expects dhparam to be a callback that takes two arguments.
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95 -- We ignore those because it is mostly used for having a separate
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96 -- set of params for EXPORT ciphers, which we don't have by default.
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97 if type(user_ssl_config.dhparam) == "string" then
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98 local f, err = io_open(user_ssl_config.dhparam);
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99 if not f then return nil, "Could not open DH parameters: "..err end
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100 local dhparam = f:read("*a");
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101 f:close();
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102 user_ssl_config.dhparam = function() return dhparam; end
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103 end
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104
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105 local ctx, err = ssl_newcontext(user_ssl_config);
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106
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107 -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
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108 -- of it ourselves (W/A for #x)
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109 if ctx and user_ssl_config.ciphers then
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110 local success;
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111 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
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112 if not success then ctx = nil; end
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113 end
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114
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115 if not ctx then
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116 err = err or "invalid ssl config"
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117 local file = err:match("^error loading (.-) %(");
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118 if file then
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119 if file == "private key" then
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120 file = user_ssl_config.key or "your private key";
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Matthew Wild <mwild1@gmail.com>
parents: 2739
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121 elseif file == "certificate" then
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
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122 file = user_ssl_config.certificate or "your certificate file";
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parents: 2739
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123 end
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parents: 2739
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124 local reason = err:match("%((.+)%)$") or "some reason";
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125 if reason == "Permission denied" then
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parents: 2739
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126 reason = "Check that the permissions allow Prosody to read this file.";
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parents: 2739
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127 elseif reason == "No such file or directory" then
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parents: 2739
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128 reason = "Check that the path is correct, and the file exists.";
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parents: 2739
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129 elseif reason == "system lib" then
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parents: 2739
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130 reason = "Previous error (see logs), or other system error.";
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parents: 2739
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131 elseif reason == "(null)" or not reason then
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parents: 2739
diff changeset
132 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
133 else
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parents: 2739
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134 reason = "Reason: "..tostring(reason):lower();
2630
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Matthew Wild <mwild1@gmail.com>
parents: 2564
diff changeset
135 end
4925
55f6e0673e33 certmanager: Add quotes around cert file path when logging.
Waqas Hussain <waqas20@gmail.com>
parents: 4900
diff changeset
136 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
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parents: 2739
diff changeset
137 else
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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
138 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
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Matthew Wild <mwild1@gmail.com>
parents: 2739
diff changeset
139 end
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3402
diff changeset
140 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
141 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
142 end
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Matthew Wild <mwild1@gmail.com>
parents:
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143
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 function reload_ssl_config()
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
diff changeset
145 global_ssl_config = configmanager.get("*", "ssl");
6080
b7d1607df87d certmanager: Update ssl_compression when config is reloaded
Kim Alvefur <zash@zash.se>
parents: 6079
diff changeset
146 if luasec_has_no_compression then
b7d1607df87d certmanager: Update ssl_compression when config is reloaded
Kim Alvefur <zash@zash.se>
parents: 6079
diff changeset
147 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
148 end
2554
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
149 end
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
150
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151 prosody.events.add_handler("config-reloaded", reload_ssl_config);
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parents:
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152
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
153 return _M;