prosody
2856e1cfbe95
core/certmanager.lua

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core/certmanager.lua @ 5043:2856e1cfbe95

Merge with Zash
author Matthew Wild <mwild1@gmail.com>
date Sat, 28 Jul 2012 20:59:03 +0100
parent 4992:e79e4d1f75de
child 5282:4cd57cb49f99
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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;
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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 end
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25
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26 module "certmanager"
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27
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28 -- Global SSL options if not overridden per-host
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29 local default_ssl_config = configmanager.get("*", "core", "ssl");
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30 local default_capath = "/etc/ssl/certs";
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31 local default_verify = (ssl and ssl.x509 and { "peer", "client_once", "continue", "ignore_purpose" }) or "none";
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32 local default_options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
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33
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34 function create_context(host, mode, user_ssl_config)
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35 user_ssl_config = user_ssl_config or default_ssl_config;
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36
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37 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
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38 if not user_ssl_config then return nil, "No SSL/TLS configuration present for "..host; end
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40 local ssl_config = {
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41 mode = mode;
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42 protocol = user_ssl_config.protocol or "sslv23";
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43 key = resolve_path(config_path, user_ssl_config.key);
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44 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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45 certificate = resolve_path(config_path, user_ssl_config.certificate);
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46 capath = resolve_path(config_path, user_ssl_config.capath or default_capath);
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47 cafile = resolve_path(config_path, user_ssl_config.cafile);
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48 verify = user_ssl_config.verify or default_verify;
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49 options = user_ssl_config.options or default_options;
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50 depth = user_ssl_config.depth;
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51 };
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52
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53 local ctx, err = ssl_newcontext(ssl_config);
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55 -- LuaSec ignores the cipher list from the config, so we have to take care
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56 -- of it ourselves (W/A for #x)
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57 if ctx and user_ssl_config.ciphers then
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58 local success;
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59 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
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60 if not success then ctx = nil; end
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61 end
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62
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63 if not ctx then
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64 err = err or "invalid ssl config"
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65 local file = err:match("^error loading (.-) %(");
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66 if file then
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67 if file == "private key" then
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68 file = ssl_config.key or "your private key";
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69 elseif file == "certificate" then
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70 file = ssl_config.certificate or "your certificate file";
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71 end
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72 local reason = err:match("%((.+)%)$") or "some reason";
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73 if reason == "Permission denied" then
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74 reason = "Check that the permissions allow Prosody to read this file.";
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75 elseif reason == "No such file or directory" then
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76 reason = "Check that the path is correct, and the file exists.";
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77 elseif reason == "system lib" then
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78 reason = "Previous error (see logs), or other system error.";
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79 elseif reason == "(null)" or not reason then
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80 reason = "Check that the file exists and the permissions are correct";
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81 else
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82 reason = "Reason: "..tostring(reason):lower();
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83 end
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84 log("error", "SSL/TLS: Failed to load '%s': %s (for %s)", file, reason, host);
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85 else
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86 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
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87 end
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88 end
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89 return ctx, err;
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90 end
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91
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92 function reload_ssl_config()
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93 default_ssl_config = configmanager.get("*", "core", "ssl");
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94 end
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95
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96 prosody.events.add_handler("config-reloaded", reload_ssl_config);
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97
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98 return _M;