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core/certmanager.lua @ 6469:93ffe59a9546
Merge 0.10->trunk
author | Waqas Hussain <waqas20@gmail.com> |
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date | Wed, 08 Oct 2014 18:47:01 -0400 |
parent | 6294:0033b021038f |
child | 6501:71b6e8b48a12 |
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 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 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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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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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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121 elseif file == "certificate" then |
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122 file = user_ssl_config.certificate or "your certificate file"; |
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123 end |
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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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126 reason = "Check that the permissions allow Prosody to read this file."; |
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127 elseif reason == "No such file or directory" then |
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128 reason = "Check that the path is correct, and the file exists."; |
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129 elseif reason == "system lib" then |
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130 reason = "Previous error (see logs), or other system error."; |
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131 elseif reason == "(null)" or not reason then |
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132 reason = "Check that the file exists and the permissions are correct"; |
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133 else |
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134 reason = "Reason: "..tostring(reason):lower(); |
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135 end |
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136 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host); |
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137 else |
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138 log("error", "SSL/TLS: Error initialising for %s: %s", host, err); |
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139 end |
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140 end |
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141 return ctx, err; |
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142 end |
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143 |
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144 function reload_ssl_config() |
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145 global_ssl_config = configmanager.get("*", "ssl"); |
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146 if luasec_has_no_compression then |
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147 core_defaults.options.no_compression = configmanager.get("*", "ssl_compression") ~= true; |
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148 end |
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149 end |
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150 |
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151 prosody.events.add_handler("config-reloaded", reload_ssl_config); |
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152 |
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153 return _M; |