annotate mod_auth_dovecot/auth_dovecot/mod_auth_dovecot.lua @ 5920:254a21a104aa

mod_server_contact_info: Backport from prosody trunk
author Matthew Wild <mwild1@gmail.com>
date Fri, 07 Jun 2024 16:14:58 +0100
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 --]]
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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