prosody
e2919978673e
util/sslconfig.lua

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util/sslconfig.lua @ 8706:e2919978673e

net.http: Fix parameter order to http request callbacks Commit e3b9dc9dd940 changed the parameter order in 2013, but did not update the names of the parameters in the callback function. Due to this inconsistency, 12df41a5a4b1 accidentally reversed the order when fixing the variable names without fixing where they are used. Additionally the documentation was incorrect (since 2013), and this has also now been fixed.
author Matthew Wild <mwild1@gmail.com>
date Wed, 04 Apr 2018 18:27:44 +0100
parent 8278:a349299038ff
child 8555:4f0f5b49bb03
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- util to easily merge multiple sets of LuaSec context options
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2
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3 local type = type;
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4 local pairs = pairs;
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5 local rawset = rawset;
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6 local t_concat = table.concat;
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7 local t_insert = table.insert;
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8 local setmetatable = setmetatable;
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9
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10 local _ENV = nil;
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11
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12 local handlers = { };
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13 local finalisers = { };
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14 local id = function (v) return v end
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15
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16 -- All "handlers" behave like extended rawset(table, key, value) with extra
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17 -- processing usually merging the new value with the old in some reasonable
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18 -- way
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19 -- If a field does not have a defined handler then a new value simply
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20 -- replaces the old.
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23 -- Convert either a list or a set into a special type of set where each
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24 -- item is either positive or negative in order for a later set of options
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25 -- to be able to remove options from this set by filtering out the negative ones
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26 function handlers.options(config, field, new)
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27 local options = config[field] or { };
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28 if type(new) ~= "table" then new = { new } end
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29 for key, value in pairs(new) do
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30 if value == true or value == false then
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31 options[key] = value;
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32 else -- list item
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33 options[value] = true;
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34 end
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35 end
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36 config[field] = options;
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37 end
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38
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39 handlers.verifyext = handlers.options;
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40
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41 -- finalisers take something produced by handlers and return what luasec
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42 -- expects it to be
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43
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44 -- Produce a list of "positive" options from the set
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45 function finalisers.options(options)
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46 local output = {};
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47 for opt, enable in pairs(options) do
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48 if enable then
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49 output[#output+1] = opt;
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50 end
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51 end
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52 return output;
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53 end
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54
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55 finalisers.verifyext = finalisers.options;
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56
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57 -- We allow ciphers to be a list
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58
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59 function finalisers.ciphers(cipherlist)
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60 if type(cipherlist) == "table" then
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61 return t_concat(cipherlist, ":");
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62 end
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63 return cipherlist;
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64 end
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65
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66 -- Curve list too
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67 finalisers.curveslist = finalisers.ciphers;
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68
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69 -- protocol = "x" should enable only that protocol
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70 -- protocol = "x+" should enable x and later versions
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71
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72 local protocols = { "sslv2", "sslv3", "tlsv1", "tlsv1_1", "tlsv1_2" };
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73 for i = 1, #protocols do protocols[protocols[i] .. "+"] = i - 1; end
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74
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75 -- this interacts with ssl.options as well to add no_x
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76 local function protocol(config)
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77 local min_protocol = protocols[config.protocol];
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78 if min_protocol then
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79 config.protocol = "sslv23";
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80 for i = 1, min_protocol do
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81 t_insert(config.options, "no_"..protocols[i]);
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82 end
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83 end
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84 end
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85
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86 -- Merge options from 'new' config into 'config'
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87 local function apply(config, new)
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88 if type(new) == "table" then
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89 for field, value in pairs(new) do
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90 (handlers[field] or rawset)(config, field, value);
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91 end
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92 end
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93 end
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94
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95 -- Finalize the config into the form LuaSec expects
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96 local function final(config)
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97 local output = { };
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98 for field, value in pairs(config) do
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99 output[field] = (finalisers[field] or id)(value);
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100 end
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101 -- Need to handle protocols last because it adds to the options list
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102 protocol(output);
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103 return output;
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104 end
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105
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106 local sslopts_mt = {
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107 __index = {
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108 apply = apply;
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109 final = final;
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110 };
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111 };
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112
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113 local function new()
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114 return setmetatable({options={}}, sslopts_mt);
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115 end
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116
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117 return {
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118 apply = apply;
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119 final = final;
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120 new = new;
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121 };