Mercurial > dovecot > core-2.2

annotate src/auth/mech-login.c @ 3071:c7db6b291daa HEAD

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API cleanup
author Timo Sirainen <tss@iki.fi>
date Sat, 08 Jan 2005 23:22:52 +0200
parents 131151e25e4b
children 289a98ba5d95
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1 /*
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2 * LOGIN authentication mechanism.
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3 *
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4 * Copyright (c) 2004 Andrey Panin <pazke@donpac.ru>
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5 *
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6 * This program is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU Lesser General Public License as published
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8 * by the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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10 */
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11
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12 #include "common.h"
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13 #include "mech.h"
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14 #include "passdb.h"
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15 #include "safe-memset.h"
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16
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17 static void verify_callback(enum passdb_result result,
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18 struct auth_request *request)
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19 {
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20 switch (result) {
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21 case PASSDB_RESULT_OK:
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22 auth_request_success(request, NULL, 0);
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23 break;
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24 case PASSDB_RESULT_INTERNAL_FAILURE:
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25 auth_request_internal_failure(request);
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26 break;
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27 default:
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28 auth_request_fail(request);
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29 break;
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30 }
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31 }
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32
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33 static void
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34 mech_login_auth_continue(struct auth_request *request,
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35 const unsigned char *data, size_t data_size)
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36 {
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37 static const char prompt2[] = "Password:";
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38 const char *username, *error;
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39
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40 if (request->user == NULL) {
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41 username = t_strndup(data, data_size);
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42
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43 if (!auth_request_set_username(request, username, &error)) {
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44 auth_request_log_info(request, "login", "%s", error);
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45 auth_request_fail(request);
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46 return;
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47 }
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48
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49 request->callback(request, AUTH_CLIENT_RESULT_CONTINUE,
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50 prompt2, strlen(prompt2));
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51 } else {
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52 char *pass = p_strndup(unsafe_data_stack_pool, data, data_size);
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53 auth_request_verify_plain(request, pass, verify_callback);
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54 safe_memset(pass, 0, strlen(pass));
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55 }
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56 }
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57
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58 static void
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59 mech_login_auth_initial(struct auth_request *request,
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60 const unsigned char *data __attr_unused__,
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61 size_t data_size __attr_unused__)
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62 {
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63 static const char prompt1[] = "Username:";
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64
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65 request->callback(request, AUTH_CLIENT_RESULT_CONTINUE,
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66 prompt1, strlen(prompt1));
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67 }
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68
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69 static void mech_login_auth_free(struct auth_request *request)
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70 {
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71 pool_unref(request->pool);
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72 }
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73
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74 static struct auth_request *mech_login_auth_new(mech_callback_t *callback)
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75 {
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76 struct auth_request *request;
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77 pool_t pool;
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78
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79 pool = pool_alloconly_create("login_auth_request", 256);
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80 request = p_new(pool, struct auth_request, 1);
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81 request->refcount = 1;
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82 request->pool = pool;
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83 request->callback = callback;
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84 return request;
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85 }
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86
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87 const struct mech_module mech_login = {
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88 "LOGIN",
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89
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90 MEMBER(flags) MECH_SEC_PLAINTEXT,
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91
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92 MEMBER(passdb_need_plain) TRUE,
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93 MEMBER(passdb_need_credentials) FALSE,
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94
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95 mech_login_auth_new,
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96 mech_login_auth_initial,
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97 mech_login_auth_continue,
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98 mech_login_auth_free
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99 };