Mercurial > dovecot > core-2.2

annotate src/auth/mech-login.c @ 2736:0f31778d3c34 HEAD

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Changed dovecot-auth protocol to ASCII based. Should be easier now to write replacement server if needed by someone. Also cleaned up/made more consistent auth code. The new code could still use some cleaning though..
author Timo Sirainen <tss@iki.fi>
date Wed, 13 Oct 2004 19:38:32 +0300
parents a07fb16b9a24
children 052f3a5743af
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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 mech_auth_finish(request, NULL, 0, result == PASSDB_RESULT_OK);
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21 }
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22
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23 static void
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24 mech_login_auth_continue(struct auth_request *request,
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25 const unsigned char *data, size_t data_size,
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26 mech_callback_t *callback)
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27 {
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28 static const char prompt2[] = "Password:";
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29 const char *error;
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30
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31 request->callback = callback;
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32
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33 if (request->user == NULL) {
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34 request->user = p_strndup(request->pool, data, data_size);
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35
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36 if (!mech_fix_username(request->user, &error)) {
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37 if (verbose) {
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38 i_info("login(%s): %s",
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39 get_log_prefix(request), error);
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40 }
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41 mech_auth_finish(request, NULL, 0, FALSE);
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42 return;
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43 }
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44
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45 callback(request, AUTH_CLIENT_RESULT_CONTINUE,
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46 prompt2, strlen(prompt2));
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47 } else {
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48 char *pass = p_strndup(unsafe_data_stack_pool, data, data_size);
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49 passdb->verify_plain(request, pass, verify_callback);
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50 safe_memset(pass, 0, strlen(pass));
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51 }
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52 }
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53
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54 static void
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55 mech_login_auth_initial(struct auth_request *request,
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56 const unsigned char *data __attr_unused__,
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57 size_t data_size __attr_unused__,
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58 mech_callback_t *callback)
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59 {
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60 static const char prompt1[] = "Username:";
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61
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62 callback(request, AUTH_CLIENT_RESULT_CONTINUE,
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63 prompt1, strlen(prompt1));
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64 }
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65
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66 static void mech_login_auth_free(struct auth_request *request)
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67 {
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68 pool_unref(request->pool);
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69 }
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70
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71 static struct auth_request *mech_login_auth_new(void)
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72 {
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73 struct auth_request *request;
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74 pool_t pool;
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75
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76 pool = pool_alloconly_create("login_auth_request", 256);
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77 request = p_new(pool, struct auth_request, 1);
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78
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79 request->refcount = 1;
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80 request->pool = pool;
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81 return request;
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82 }
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83
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84 const struct mech_module mech_login = {
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85 "LOGIN",
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86
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87 MEMBER(flags) MECH_SEC_PLAINTEXT,
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88
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89 MEMBER(passdb_need_plain) TRUE,
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90 MEMBER(passdb_need_credentials) FALSE,
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91
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92 mech_login_auth_new,
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93 mech_login_auth_initial,
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94 mech_login_auth_continue,
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95 mech_login_auth_free
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96 };