1 /* $NetBSD: mech_login.c,v 1.3 2011/02/11 23:44:43 christos Exp $ */ 2 3 /* Copyright (c) 2010 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Mateusz Kocielski. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 #include <sys/cdefs.h> 38 __RCSID("$NetBSD: mech_login.c,v 1.3 2011/02/11 23:44:43 christos Exp $"); 39 40 #include <assert.h> 41 #include <saslc.h> 42 #include <stdio.h> 43 #include <string.h> 44 45 #include "mech.h" 46 #include "saslc_private.h" 47 48 49 /* Non-standard: no RFC. */ 50 51 /* properties */ 52 #define SASLC_LOGIN_AUTHCID SASLC_PROP_AUTHCID 53 #define SASLC_LOGIN_PASSWD SASLC_PROP_PASSWD 54 55 /** 56 * @brief doing one step of the sasl authentication 57 * @param sess sasl session 58 * @param in input data 59 * @param inlen input data length 60 * @param out place to store output data 61 * @param outlen output data length 62 * @return MECH_OK - success, 63 * MECH_STEP - more steps are needed, 64 * MECH_ERROR - error 65 */ 66 /*ARGSUSED*/ 67 static int 68 saslc__mech_login_cont(saslc_sess_t *sess, const void *in __unused, 69 size_t inlen __unused, void **out, size_t *outlen) 70 { 71 saslc__mech_sess_t *ms = sess->mech_sess; 72 73 switch (ms->step) { 74 case 0: 75 if (saslc__mech_strdup(sess, (char **)out, outlen, 76 SASLC_LOGIN_AUTHCID, 77 "authcid is required for an authentication") == MECH_OK) 78 return MECH_STEP; 79 else 80 return MECH_ERROR; 81 case 1: 82 return saslc__mech_strdup(sess, (char **)out, outlen, 83 SASLC_LOGIN_PASSWD, 84 "passwd is required for an authentication"); 85 default: 86 assert(/*CONSTCOND*/0); /* impossible */ 87 return MECH_ERROR; 88 } 89 } 90 91 /* mechanism definition */ 92 const saslc__mech_t saslc__mech_login = { 93 .name = "LOGIN", 94 .flags = FLAG_PLAINTEXT, 95 .create = saslc__mech_generic_create, 96 .cont = saslc__mech_login_cont, 97 .encode = NULL, 98 .decode = NULL, 99 .destroy = saslc__mech_generic_destroy 100 }; 101