Mercurial > prosody-modules

annotate mod_auth_ha1/mod_auth_ha1.lua @ 5186:fa3059e653fa

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mod_http_oauth2: Implement the Implicit flow Everyone says this is insecure and bad, but it's also the only thing that makes sense for e.g. pure JavaScript clients, but hey implement this even more complicated thing instead!
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2023 22:06:50 +0100
parents 31c4d92a81e5
children
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1 -- Prosody IM
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2 -- Copyright (C) 2014 Matthew Wild
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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 local usermanager = require "core.usermanager";
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9 local new_sasl = require "util.sasl".new;
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10
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11 local nodeprep = require "util.encodings".stringprep.nodeprep;
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12 local nameprep = require "util.encodings".stringprep.nameprep;
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13 local md5 = require "util.hashes".md5;
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14
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15 local host = module.host;
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17 local auth_filename = module:get_option_string("auth_ha1_file", "auth.txt");
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18 local auth_data = {};
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19
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20 function reload_auth_data()
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21 local f, err = io.open(auth_filename);
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22 if not f then
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23 module:log("error", "Failed to read from auth file: %s", err);
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24 return;
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25 end
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26 auth_data = {};
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27 local line_number, imported_count, not_authorized_count = 0, 0, 0;
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28 for line in f:lines() do
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29 line_number = line_number + 1;
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30 local username, hash, realm, state = line:match("^([^:]+):(%x+):([^:]+):(.+)$");
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31 if not username then
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32 if line:sub(1,1) ~= "#" then
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33 module:log("error", "Unable to parse line %d of auth file, skipping", line_number);
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34 end
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35 else
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36 username, realm = nodeprep(username), nameprep(realm);
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37 if not username then
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38 module:log("error", "Invalid username on line %d of auth file, skipping", line_number);
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39 elseif not realm then
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40 module:log("error", "Invalid hostname/realm on line %d of auth file, skipping", line_number);
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41 elseif state ~= "authorized" then
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42 not_authorized_count = not_authorized_count + 1;
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43 elseif realm == host then
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44 auth_data[username] = hash;
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45 imported_count = imported_count + 1;
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46 end
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47 end
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48 end
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49 f:close();
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50 module:log("debug", "Loaded %d accounts from auth file (%d authorized)", imported_count, imported_count-not_authorized_count);
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51 end
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52
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53 function module.load()
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54 reload_auth_data();
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55 end
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56
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57 module:hook_global("config-reloaded", reload_auth_data);
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58
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59 -- define auth provider
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60 local provider = {};
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61
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62 function provider.test_password(username, password)
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63 module:log("debug", "test password for user %s at host %s, %s", username, host, password);
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64
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65 local test_hash = md5(username..":"..host..":"..password, true);
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66
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67 if test_hash == auth_data[username] then
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68 return true;
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69 else
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70 return nil, "Auth failed. Invalid username or password.";
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71 end
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72 end
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74 function provider.set_password(username, password)
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75 return nil, "Changing passwords not supported";
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76 end
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77
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78 function provider.user_exists(username)
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79 if not auth_data[username] then
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80 module:log("debug", "account not found for username '%s' at host '%s'", username, host);
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81 return nil, "Auth failed. Invalid username";
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82 end
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83 return true;
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84 end
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85
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86 function provider.create_user(username, password)
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87 return nil, "User creation not supported";
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88 end
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89
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90 function provider.delete_user(username)
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91 return nil , "User deletion not supported";
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92 end
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93
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94 function provider.get_sasl_handler()
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95 return new_sasl(host, {
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96 plain_test = function(sasl, username, password, realm)
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97 return usermanager.test_password(username, realm, password), true;
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98 end
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99 });
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100 end
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101
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102 module:provides("auth", provider);
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103