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annotate mod_auth_dovecot/auth_dovecot/mod_auth_dovecot.lua @ 832:9087431d35f6

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mod_carbons: Add comments and rename some variables to make it clearer
author Kim Alvefur <zash@zash.se>
date Tue, 18 Sep 2012 18:58:13 +0200
parents 881ec9919144
children c9e2beec4ef6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 = new_sasl(module.host)
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41 assert(s, "Could not create a new SASL object");
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42 assert(s.mechanisms, "SASL object has no mechanims method");
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43 local m, _m = {}, s:mechanisms();
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44 assert(not append_host or _m.PLAIN, "auth_append_host requires PLAIN, but it is unavailable");
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45 for k in pairs(_m) do
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46 table.insert(m, k);
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47 end
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48 log("debug", "Mechanims found: %s", table.concat(m, ", "));
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49 end
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50
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51 provider = {};
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52
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53 function provider.test_password(username, password)
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54 return new_sasl(module.host):plain_test(username, password);
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55 end
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56
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57 function provider.get_password(username)
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58 return nil, "Passwords unavailable for "..name;
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59 end
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60
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61 function provider.set_password(username, password)
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62 return nil, "Passwords unavailable for "..name;
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63 end
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64
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65 function provider.user_exists(username)
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66 return true -- FIXME
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67 --[[ This, sadly, doesn't work.
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68 local user_test = new_sasl(module.host);
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69 user_test:select("PLAIN");
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70 user_test:process(("\0%s\0"):format(username));
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71 return user_test.username == username;
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72 --]]
474
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73 end
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74
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75 function provider.create_user(username, password)
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76 return nil, "Account creation/modification not available with "..name;
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77 end
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78
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79 function provider.get_sasl_handler()
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80 return new_sasl(module.host);
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81 end
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82
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83 if append_host then
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84 function provider.test_password(username, password)
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85 return new_sasl(module.host):plain_test(username .. "@".. (service_realm or module.host), password);
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86 end
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87
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88 provider.get_sasl_handler = nil
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89 end
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90
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91 module:provides("auth", provider);
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92