prosody
1292643ac498
core/certmanager.lua

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core/certmanager.lua @ 5564:1292643ac498

util.array: Wrap tostring() output in {} (otherwise empty arrays print as "").
author Waqas Hussain <waqas20@gmail.com>
date Tue, 07 May 2013 10:41:03 -0400
parent 5377:898454038524
child 5621:63cfd59999b6
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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
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16 local prosody = prosody;
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17 local resolve_path = configmanager.resolve_relative_path;
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18 local config_path = prosody.paths.config;
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19
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20 local luasec_has_noticket, luasec_has_verifyext;
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21 if ssl then
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22 local luasec_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
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23 luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
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24 luasec_has_verifyext = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=5;
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25 end
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26
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27 module "certmanager"
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28
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29 -- Global SSL options if not overridden per-host
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30 local default_ssl_config = configmanager.get("*", "ssl");
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31 local default_capath = "/etc/ssl/certs";
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32 local default_verify = (ssl and ssl.x509 and { "peer", "client_once", }) or "none";
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33 local default_options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
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34 local default_verifyext = { "lsec_continue", "lsec_ignore_purpose" };
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35
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36 if ssl and not luasec_has_verifyext and ssl.x509 then
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37 -- COMPAT mw/luasec-hg
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38 for i=1,#default_verifyext do -- Remove lsec_ prefix
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39 default_verify[#default_verify+1] = default_verifyext[i]:sub(6);
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40 end
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41 end
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42
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43 function create_context(host, mode, user_ssl_config)
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44 user_ssl_config = user_ssl_config or default_ssl_config;
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45
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46 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
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47 if not user_ssl_config then return nil, "No SSL/TLS configuration present for "..host; end
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48
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49 local ssl_config = {
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50 mode = mode;
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51 protocol = user_ssl_config.protocol or "sslv23";
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52 key = resolve_path(config_path, user_ssl_config.key);
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53 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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54 certificate = resolve_path(config_path, user_ssl_config.certificate);
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55 capath = resolve_path(config_path, user_ssl_config.capath or default_capath);
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56 cafile = resolve_path(config_path, user_ssl_config.cafile);
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57 verify = user_ssl_config.verify or default_verify;
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58 verifyext = user_ssl_config.verifyext or default_verifyext;
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59 options = user_ssl_config.options or default_options;
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60 depth = user_ssl_config.depth;
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61 };
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62
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63 local ctx, err = ssl_newcontext(ssl_config);
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64
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65 -- LuaSec ignores the cipher list from the config, so we have to take care
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66 -- of it ourselves (W/A for #x)
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67 if ctx and user_ssl_config.ciphers then
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68 local success;
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69 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
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70 if not success then ctx = nil; end
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71 end
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72
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73 if not ctx then
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74 err = err or "invalid ssl config"
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75 local file = err:match("^error loading (.-) %(");
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76 if file then
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77 if file == "private key" then
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78 file = ssl_config.key or "your private key";
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79 elseif file == "certificate" then
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80 file = ssl_config.certificate or "your certificate file";
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81 end
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82 local reason = err:match("%((.+)%)$") or "some reason";
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83 if reason == "Permission denied" then
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84 reason = "Check that the permissions allow Prosody to read this file.";
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85 elseif reason == "No such file or directory" then
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86 reason = "Check that the path is correct, and the file exists.";
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87 elseif reason == "system lib" then
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88 reason = "Previous error (see logs), or other system error.";
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89 elseif reason == "(null)" or not reason then
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90 reason = "Check that the file exists and the permissions are correct";
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91 else
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92 reason = "Reason: "..tostring(reason):lower();
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93 end
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94 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
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95 else
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96 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
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97 end
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98 end
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99 return ctx, err;
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100 end
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101
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102 function reload_ssl_config()
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103 default_ssl_config = configmanager.get("*", "ssl");
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104 end
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105
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106 prosody.events.add_handler("config-reloaded", reload_ssl_config);
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107
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108 return _M;