prosody
d885ca14362d
core/certmanager.lua

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core/certmanager.lua @ 4900:d885ca14362d

certmanager: tonumber() (fix for 0b8134015635)
author Matthew Wild <mwild1@gmail.com>
date Sat, 19 May 2012 21:57:40 +0100
parent 4899:0b8134015635
child 4925:55f6e0673e33
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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 setmetatable, tostring = setmetatable, 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_major, luasec_minor = ssl._VERSION:match("^(%d+)%.(%d+)");
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21 local luasec_has_noticket = tonumber(luasec_major)>0 or tonumber(luasec_minor)>=4;
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22
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23 module "certmanager"
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24
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25 -- Global SSL options if not overridden per-host
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26 local default_ssl_config = configmanager.get("*", "core", "ssl");
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27 local default_capath = "/etc/ssl/certs";
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28 local default_verify = (ssl and ssl.x509 and { "peer", "client_once", "continue", "ignore_purpose" }) or "none";
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29 local default_options = { "no_sslv2", luasec_has_noticket and "no_ticket" or nil };
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30
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31 function create_context(host, mode, user_ssl_config)
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32 user_ssl_config = user_ssl_config or default_ssl_config;
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33
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34 if not ssl then return nil, "LuaSec (required for encryption) was not found"; end
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35 if not user_ssl_config then return nil, "No SSL/TLS configuration present for "..host; end
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36
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37 local ssl_config = {
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38 mode = mode;
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39 protocol = user_ssl_config.protocol or "sslv23";
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40 key = resolve_path(config_path, user_ssl_config.key);
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41 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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42 certificate = resolve_path(config_path, user_ssl_config.certificate);
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43 capath = resolve_path(config_path, user_ssl_config.capath or default_capath);
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44 cafile = resolve_path(config_path, user_ssl_config.cafile);
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45 verify = user_ssl_config.verify or default_verify;
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46 options = user_ssl_config.options or default_options;
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47 depth = user_ssl_config.depth;
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48 };
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49
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50 local ctx, err = ssl_newcontext(ssl_config);
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51
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52 -- LuaSec ignores the cipher list from the config, so we have to take care
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53 -- of it ourselves (W/A for #x)
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54 if ctx and user_ssl_config.ciphers then
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55 local success;
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56 success, err = ssl.context.setcipher(ctx, user_ssl_config.ciphers);
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57 if not success then ctx = nil; end
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58 end
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59
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60 if not ctx then
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61 err = err or "invalid ssl config"
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62 local file = err:match("^error loading (.-) %(");
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63 if file then
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64 if file == "private key" then
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65 file = ssl_config.key or "your private key";
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66 elseif file == "certificate" then
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67 file = ssl_config.certificate or "your certificate file";
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68 end
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69 local reason = err:match("%((.+)%)$") or "some reason";
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70 if reason == "Permission denied" then
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71 reason = "Check that the permissions allow Prosody to read this file.";
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72 elseif reason == "No such file or directory" then
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73 reason = "Check that the path is correct, and the file exists.";
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74 elseif reason == "system lib" then
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75 reason = "Previous error (see logs), or other system error.";
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76 elseif reason == "(null)" or not reason then
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77 reason = "Check that the file exists and the permissions are correct";
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78 else
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79 reason = "Reason: "..tostring(reason):lower();
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80 end
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81 log("error", "SSL/TLS: Failed to load %s: %s (for %s)", file, reason, host);
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82 else
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83 log("error", "SSL/TLS: Error initialising for %s: %s", host, err);
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84 end
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85 end
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86 return ctx, err;
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87 end
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88
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89 function reload_ssl_config()
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90 default_ssl_config = configmanager.get("*", "core", "ssl");
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91 end
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92
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93 prosody.events.add_handler("config-reloaded", reload_ssl_config);
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94
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95 return _M;