prosody-modules
d3ebaef1ea7a
mod_auth_http_async/mod_auth_http_async.lua

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mod_auth_http_async/mod_auth_http_async.lua @ 5264:d3ebaef1ea7a

mod_http_oauth2: Correctly verify OAuth client credentials on revocation Makes no sense to validate against username and password here, or using a token to revoke another token, or itself? In fact, upon further discussion, why do you need credentials to revoke a token? If you are not supposed to have the token, revoking it seems the most responsible thing to do with it, so it should be allowed, while if you are supposed to have it, you should be allowed to revoke it.
author Kim Alvefur <zash@zash.se>
date Tue, 21 Mar 2023 21:57:18 +0100
parent 2811:39156d6f7268
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2013 Matthew Wild
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3 -- Copyright (C) 2008-2013 Waqas Hussain
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4 -- Copyright (C) 2014 Kim Alvefur
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local new_sasl = require "util.sasl".new;
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11 local base64 = require "util.encodings".base64.encode;
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12 local have_async, async = pcall(require, "util.async");
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13
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14 local log = module._log;
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15 local host = module.host;
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16
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17 local api_base = module:get_option_string("http_auth_url", ""):gsub("$host", host);
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18 if api_base == "" then error("http_auth_url required") end
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19
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20 local provider = {};
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21
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22 -- globals required by socket.http
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23 if rawget(_G, "PROXY") == nil then
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24 rawset(_G, "PROXY", false)
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25 end
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26 if rawget(_G, "base_parsed") == nil then
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27 rawset(_G, "base_parsed", false)
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28 end
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29 if not have_async then -- FINE! Set your globals then
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30 prosody.unlock_globals()
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31 require "ltn12"
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32 require "socket"
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33 require "socket.http"
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34 require "ssl.https"
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35 prosody.lock_globals()
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36 end
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37
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38 local function async_http_auth(url, username, password)
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39 module:log("debug", "async_http_auth()");
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40 local http = require "net.http";
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41 local wait, done = async.waiter();
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42 local content, code, request, response;
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43 local ex = {
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44 headers = { Authorization = "Basic "..base64(username..":"..password); };
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45 }
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46 local function cb(content_, code_, request_, response_)
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47 content, code, request, response = content_, code_, request_, response_;
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48 done();
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49 end
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50 http.request(url, ex, cb);
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51 wait();
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52 if code >= 200 and code <= 299 then
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53 module:log("debug", "HTTP auth provider confirmed valid password");
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54 return true;
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55 else
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56 module:log("debug", "HTTP auth provider returned status code %d", code);
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57 end
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58 return nil, "Auth failed. Invalid username or password.";
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59 end
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60
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61 local function sync_http_auth(url,username, password)
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62 module:log("debug", "sync_http_auth()");
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63 require "ltn12";
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64 local http = require "socket.http";
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65 local https = require "ssl.https";
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66 local request;
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67 if string.sub(url, 1, string.len('https')) == 'https' then
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68 request = https.request;
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69 else
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70 request = http.request;
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71 end
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72 local _, code, headers, status = request{
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73 url = url,
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74 headers = { Authorization = "Basic "..base64(username..":"..password); }
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75 };
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76 if type(code) == "number" and code >= 200 and code <= 299 then
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77 module:log("debug", "HTTP auth provider confirmed valid password");
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78 return true;
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79 else
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80 module:log("debug", "HTTP auth provider returned status code: "..code);
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81 end
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82 return nil, "Auth failed. Invalid username or password.";
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83 end
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84
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85 function provider.test_password(username, password)
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86 local url = api_base:gsub("$user", username):gsub("$password", password);
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87 log("debug", "Testing password for user %s at host %s with URL %s", username, host, url);
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88 if (have_async) then
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89 return async_http_auth(url, username, password);
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90 else
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91 return sync_http_auth(url, username, password);
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92 end
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93 end
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94
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95 function provider.users()
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96 return function()
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97 return nil;
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98 end
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99 end
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100
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101 function provider.set_password(username, password)
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102 return nil, "Changing passwords not supported";
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103 end
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104
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105 function provider.user_exists(username)
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106 return true;
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107 end
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108
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109 function provider.create_user(username, password)
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110 return nil, "User creation not supported";
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111 end
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112
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113 function provider.delete_user(username)
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114 return nil , "User deletion not supported";
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115 end
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116
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117 function provider.get_sasl_handler()
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118 return new_sasl(host, {
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119 plain_test = function(sasl, username, password, realm)
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120 return provider.test_password(username, password), true;
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121 end
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122 });
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123 end
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124
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125 module:provides("auth", provider);