annotate mod_auth_dovecot/auth_dovecot/mod_auth_dovecot.lua @ 5243:d5dc8edb2695

mod_http_oauth2: Use more compact IDs UUIDs are nice but so verbose! The reduction in entropy for the nonce should be fine since the timestamp is also counts towards this, and it changes every second (modulo clock shenanigans), so the chances of someone managing to get the same client_secret by registering with the same information at the same time as another entity should be negligible.
author Kim Alvefur <zash@zash.se>
date Sat, 11 Mar 2023 22:46:27 +0100 (21 months ago)
parents 544f5a4a8428
children
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1 -- Dovecot authentication backend for Prosody
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2 --
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3 -- Copyright (C) 2010-2011 Waqas Hussain
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4 -- Copyright (C) 2011 Kim Alvefur
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5 --
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6
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7 local name = "Dovecot SASL";
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8 local log = require "util.logger".init("auth_dovecot");
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9
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10 local socket_path = module:get_option_string("dovecot_auth_socket", "/var/run/dovecot/auth-login");
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11 local socket_host = module:get_option_string("dovecot_auth_host", "127.0.0.1");
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12 local socket_port = module:get_option_string("dovecot_auth_port");
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13
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14 local service_realm = module:get_option("realm");
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15 local service_name = module:get_option("service_name");
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16 local append_host = module:get_option_boolean("auth_append_host");
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17 --assert(not append_host, "auth_append_host does not work");
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18 local validate_domain = module:get_option_boolean("validate_append_host");
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19 local handle_appended = module:get_option_string("handle_appended");
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20 local util_sasl_new = require "util.sasl".new;
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21
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22 local new_dovecot_sasl = module:require "sasl_dovecot".new;
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23
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24 local new_sasl = function(realm)
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25 return new_dovecot_sasl(
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26 service_realm or realm,
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27 service_name or "xmpp",
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28
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29 socket_port and { socket_host, socket_port } or socket_path,
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30
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31 { --config
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32 handle_domain = handle_appended or
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33 (append_host and "split" or "escape"),
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34 validate_domain = validate_domain,
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35 }
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36 );
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37 end
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38
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39 do
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40 local s, err = new_sasl(module.host)
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41 if not s then
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42 log("error", "%s", tostring(err));
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43 end
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44 assert(s, "Could not create a new SASL object");
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45 assert(s.mechanisms, "SASL object has no mechanims method");
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46 local m, _m = {}, s:mechanisms();
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47 assert(not append_host or _m.PLAIN, "auth_append_host requires PLAIN, but it is unavailable");
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48 for k in pairs(_m) do
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49 table.insert(m, k);
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50 end
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51 log("debug", "Mechanims found: %s", table.concat(m, ", "));
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52 end
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53
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54 provider = {};
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55
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56 function provider.test_password(username, password)
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57 return new_sasl(module.host):plain_test(username, password);
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58 end
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59
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60 function provider.get_password(username)
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61 return nil, "Passwords unavailable for "..name;
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62 end
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63
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64 function provider.set_password(username, password)
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65 return nil, "Passwords unavailable for "..name;
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66 end
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67
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68 function provider.user_exists(username)
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69 return true -- FIXME
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70 --[[ This, sadly, doesn't work.
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71 local user_test = new_sasl(module.host);
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72 user_test:select("PLAIN");
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73 user_test:process(("\0%s\0"):format(username));
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74 return user_test.username == username;
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75 --]]
474
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76 end
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77
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78 function provider.create_user(username, password)
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79 return nil, "Account creation/modification not available with "..name;
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80 end
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81
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82 function provider.get_sasl_handler()
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83 return new_sasl(module.host);
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84 end
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85
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86 if append_host then
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87 function provider.test_password(username, password)
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88 return new_sasl(module.host):plain_test(username .. "@".. (service_realm or module.host), password) == "success";
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89 end
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90
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91 function provider.get_sasl_handler()
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92 return util_sasl_new(module.host, {
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93 plain_test = function(sasl, username, password, realm)
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94 return provider.test_password(username, password), true
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95 end;
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96 });
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97 end
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98 end
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99
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100 module:provides("auth", provider);
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101