prosody
c2616274bef7
net/tls_luasec.lua

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net/tls_luasec.lua @ 13012:c2616274bef7

mod_invites: Record roles as ordered list, first becoming primary role For mod_invites_register to apply on user creation.
author Kim Alvefur <zash@zash.se>
date Thu, 30 Mar 2023 11:09:08 +0200
parent 12486:ee93df086926
child 13115:749376d75b40
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Jonas Schäfer <jonas@wielicki.name>
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1 -- Prosody IM
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2 -- Copyright (C) 2021 Prosody folks
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6 --
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7
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8 --[[
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9 This file provides a shim abstraction over LuaSec, consolidating some code
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10 which was previously spread between net.server backends, portmanager and
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11 certmanager.
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12
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13 The goal is to provide a more or less well-defined API on top of LuaSec which
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14 abstracts away some of the things which are not needed and simplifies usage of
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15 commonly used things (such as SNI contexts). Eventually, network backends
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16 which do not rely on LuaSocket+LuaSec should be able to provide *this* API
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17 instead of having to mimic LuaSec.
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18 ]]
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19 local ssl = require "ssl";
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20 local ssl_newcontext = ssl.newcontext;
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21 local ssl_context = ssl.context or require "ssl.context";
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22 local io_open = io.open;
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23
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24 local context_api = {};
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25 local context_mt = {__index = context_api};
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26
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27 function context_api:set_sni_host(host, cert, key)
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28 local ctx, err = self._builder:clone():apply({
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29 certificate = cert,
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30 key = key,
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31 }):build();
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32 if not ctx then
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33 return false, err
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34 end
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35
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36 self._sni_contexts[host] = ctx._inner
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37
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38 return true, nil
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39 end
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40
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41 function context_api:remove_sni_host(host)
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42 self._sni_contexts[host] = nil
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43 end
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44
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45 function context_api:wrap(sock)
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46 local ok, conn, err = pcall(ssl.wrap, sock, self._inner);
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47 if not ok then
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48 return nil, err
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49 end
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50 return conn, nil
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51 end
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52
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53 local function new_context(cfg, builder)
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54 -- LuaSec expects dhparam to be a callback that takes two arguments.
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55 -- We ignore those because it is mostly used for having a separate
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56 -- set of params for EXPORT ciphers, which we don't have by default.
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57 if type(cfg.dhparam) == "string" then
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58 local f, err = io_open(cfg.dhparam);
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59 if not f then return nil, "Could not open DH parameters: "..err end
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60 local dhparam = f:read("*a");
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61 f:close();
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62 cfg.dhparam = function() return dhparam; end
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63 end
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64
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65 local inner, err = ssl_newcontext(cfg);
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66 if not inner then
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67 return nil, err
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68 end
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69
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70 -- COMPAT Older LuaSec ignores the cipher list from the config, so we have to take care
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71 -- of it ourselves (W/A for #x)
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72 if inner and cfg.ciphers then
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73 local success;
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74 success, err = ssl_context.setcipher(inner, cfg.ciphers);
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75 if not success then
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76 return nil, err
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77 end
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78 end
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79
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80 return setmetatable({
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81 _inner = inner,
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82 _builder = builder,
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83 _sni_contexts = {},
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84 }, context_mt), nil
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85 end
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86
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87 return {
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88 new_context = new_context,
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89 };