prosody
970c666c5586
core/certmanager.lua

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core/certmanager.lua @ 5822:970c666c5586

certmanager: Allow for specifying the dhparam option as a path to a file instead of a callback
author Kim Alvefur <zash@zash.se>
date Tue, 03 Sep 2013 15:43:59 +0200
parent 5821:7974683a9bb7
child 5872:1c3ebd3009fe
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 = ssl;
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12 local ssl_newcontext = ssl and ssl.newcontext;
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13
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14 local tostring = tostring;
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15 local pairs = pairs;
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16 local type = type;
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17 local io_open = io.open;
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18
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19 local prosody = prosody;
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20 local resolve_path = configmanager.resolve_relative_path;
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21 local config_path = prosody.paths.config;
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23 local luasec_has_noticket, luasec_has_verifyext, luasec_has_no_compression;
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24 if ssl then
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25 local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
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26 luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
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27 luasec_has_verifyext = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
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28 luasec_has_no_compression = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
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29 end
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30
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31 module "certmanager"
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32
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33 -- Global SSL options if not overridden per-host
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34 local global_ssl_config = configmanager.get("*", "ssl");
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35
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36 local core_defaults = {
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37 capath = "/etc/ssl/certs";
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38 protocol = "sslv23";
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39 verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
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40 options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
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41 verifyext = { "lsec_continue", "lsec_ignore_purpose" };
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42 curve = "secp384r1";
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43 ciphers = "HIGH:!DSS:!aNULL@STRENGTH";
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44 }
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45 local path_options = { -- These we pass through resolve_path()
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46 key = true, certificate = true, cafile = true, capath = true, dhparam = true
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47 }
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48
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49 if ssl and not luasec_has_verifyext and ssl.x509 then
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50 -- COMPAT mw/luasec-hg
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51 for i=1,#core_defaults.verifyext do -- Remove lsec_ prefix
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52 core_defaults.verify[#core_defaults.verify+1] = core_defaults.verifyext[i]:sub(6);
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53 end
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54 end
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55
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56 if luasec_has_no_compression and configmanager.get("*", "ssl_compression") ~= true then
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57 core_defaults.options[#core_defaults.options+1] = "no_compression";
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58 end
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59
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60 function create_context(host, mode, user_ssl_config)
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61 user_ssl_config = user_ssl_config or {}
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62 user_ssl_config.mode = mode;
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63
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64 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
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65
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66 if global_ssl_config then
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67 for option,default_value in pairs(global_ssl_config) do
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68 if not user_ssl_config[option] then
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69 user_ssl_config[option] = default_value;
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70 end
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71 end
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72 end
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73 for option,default_value in pairs(core_defaults) do
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74 if not user_ssl_config[option] then
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75 user_ssl_config[option] = default_value;
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76 end
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77 end
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78 user_ssl_config.password = user_ssl_config.password or function() log("error", "Encrypted certificate for %s requires 'ssl' 'password' to be set in config", host); end;
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79 for option in pairs(path_options) do
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80 if type(user_ssl_config[option]) == "string" then
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81 user_ssl_config[option] = resolve_path(config_path, user_ssl_config[option]);
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82 end
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83 end
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84
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85 if not user_ssl_config.key then return nil, "No key present in SSL/TLS configuration for "..host; end
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86 if not user_ssl_config.certificate then return nil, "No certificate present in SSL/TLS configuration for "..host; end
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87
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88 -- LuaSec expects dhparam to be a callback that takes two arguments.
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89 -- We ignore those because it is mostly used for having a separate
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90 -- set of params for EXPORT ciphers, which we don't have by default.
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91 if type(user_ssl_config.dhparam) == "string" then
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92 local f, err = io_open(user_ssl_config.dhparam);
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93 if not f then return nil, "Could not open DH parameters: "..err end
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94 local dhparam = f:read("*a");
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95 f:close();
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96 user_ssl_config.dhparam = function() return dhparam; end
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97 end
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98
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99 local ctx, err = ssl_newcontext(user_ssl_config);
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100
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101 -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
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102 -- of it ourselves (W/A for #x)
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103 if ctx and user_ssl_config.ciphers then
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104 local success;
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105 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
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106 if not success then ctx = nil; end
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107 end
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108
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109 if not ctx then
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110 err = err or "invalid ssl config"
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111 local file = err:match("^error loading (.-) %(");
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112 if file then
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113 if file == "private key" then
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114 file = user_ssl_config.key or "your private key";
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115 elseif file == "certificate" then
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116 file = user_ssl_config.certificate or "your certificate file";
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117 end
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118 local reason = err:match("%((.+)%)$") or "some reason";
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parents: 2739
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119 if reason == "Permission denied" then
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120 reason = "Check that the permissions allow Prosody to read this file.";
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121 elseif reason == "No such file or directory" then
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parents: 2739
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122 reason = "Check that the path is correct, and the file exists.";
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parents: 2739
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123 elseif reason == "system lib" then
9bb2da325d4d certmanager: Adjust paths of SSL key/certs to be relative to the config file, fixes #147
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124 reason = "Previous error (see logs), or other system error.";
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parents: 2739
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125 elseif reason == "(null)" or not reason then
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parents: 2739
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126 reason = "Check that the file exists and the permissions are correct";
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e8fc67b73820 certmanager: Bring back the friendly errors when failing to load the key/certificate file
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parents: 2564
diff changeset
127 else
3355
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parents: 2739
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128 reason = "Reason: "..tostring(reason):lower();
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parents: 2564
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129 end
4925
55f6e0673e33 certmanager: Add quotes around cert file path when logging.
Waqas Hussain <waqas20@gmail.com>
parents: 4900
diff changeset
130 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
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parents: 2739
diff changeset
131 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
132 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
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parents: 2739
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133 end
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3402
diff changeset
134 end
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3402
diff changeset
135 return ctx, err;
2554
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
136 end
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
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137
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
138 function reload_ssl_config()
5684
5554029d759b certmanager: Overhaul of how ssl configs are built.
Kim Alvefur <zash@zash.se>
parents: 5679
diff changeset
139 global_ssl_config = configmanager.get("*", "ssl");
2554
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parents:
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140 end
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parents:
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141
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
142 prosody.events.add_handler("config-reloaded", reload_ssl_config);
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
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parents:
diff changeset
143
b877533d4ec9 certmanager: Hello world, I'm come to manage your SSL contexts
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 return _M;