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      1 /*	$NetBSD: gss_add_cred_with_password.c,v 1.2 2017/01/28 21:31:46 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 Doug Rabson
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  *	$FreeBSD: src/lib/libgssapi/gss_add_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
     29  */
     30 
     31 #include "mech_locl.h"
     32 
     33 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
     34 gss_add_cred_with_password(OM_uint32 *minor_status,
     35     gss_const_cred_id_t input_cred_handle,
     36     gss_const_name_t desired_name,
     37     const gss_OID desired_mech,
     38     const gss_buffer_t password,
     39     gss_cred_usage_t cred_usage,
     40     OM_uint32 initiator_time_req,
     41     OM_uint32 acceptor_time_req,
     42     gss_cred_id_t *output_cred_handle,
     43     gss_OID_set *actual_mechs,
     44     OM_uint32 *initiator_time_rec,
     45     OM_uint32 *acceptor_time_rec)
     46 {
     47 	OM_uint32 major_status;
     48 	gssapi_mech_interface m;
     49 	struct _gss_cred *cred = (struct _gss_cred *) input_cred_handle;
     50 	struct _gss_cred *new_cred;
     51 	struct _gss_mechanism_cred *mc;
     52 	struct _gss_mechanism_name *mn = NULL;
     53 	OM_uint32 junk, time_req;
     54 
     55 	*minor_status = 0;
     56 	*output_cred_handle = GSS_C_NO_CREDENTIAL;
     57 	if (initiator_time_rec)
     58 	    *initiator_time_rec = 0;
     59 	if (acceptor_time_rec)
     60 	    *acceptor_time_rec = 0;
     61 	if (actual_mechs)
     62 	    *actual_mechs = GSS_C_NO_OID_SET;
     63 
     64 	m = __gss_get_mechanism(desired_mech);
     65 	if (m == NULL) {
     66 		*minor_status = 0;
     67 		return (GSS_S_BAD_MECH);
     68 	}
     69 
     70 	new_cred = calloc(1, sizeof(struct _gss_cred));
     71 	if (new_cred == NULL) {
     72 		*minor_status = ENOMEM;
     73 		return (GSS_S_FAILURE);
     74 	}
     75 	HEIM_SLIST_INIT(&new_cred->gc_mc);
     76 
     77 	/*
     78 	 * Copy credentials from un-desired mechanisms to the new credential.
     79 	 */
     80 	if (cred) {
     81 		HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
     82 			struct _gss_mechanism_cred *copy_mc;
     83 
     84 			if (gss_oid_equal(mc->gmc_mech_oid, desired_mech)) {
     85 				continue;
     86 			}
     87 			copy_mc = _gss_copy_cred(mc);
     88 			if (copy_mc == NULL) {
     89 				gss_release_cred(&junk, (gss_cred_id_t *)&new_cred);
     90 				*minor_status = ENOMEM;
     91 				return (GSS_S_FAILURE);
     92 			}
     93 			HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, copy_mc, gmc_link);
     94 		}
     95 	}
     96 
     97 	/*
     98 	 * Figure out a suitable mn, if any.
     99 	 */
    100 	if (desired_name != GSS_C_NO_NAME) {
    101 		major_status = _gss_find_mn(minor_status,
    102 					    (struct _gss_name *) desired_name,
    103 					    desired_mech,
    104 					    &mn);
    105 		if (major_status != GSS_S_COMPLETE) {
    106 			gss_release_cred(&junk, (gss_cred_id_t *)&new_cred);
    107 			return (major_status);
    108 		}
    109 	}
    110 
    111 	if (cred_usage == GSS_C_BOTH)
    112 		time_req = initiator_time_req > acceptor_time_req ? acceptor_time_req : initiator_time_req;
    113 	else if (cred_usage == GSS_C_INITIATE)
    114 		time_req = initiator_time_req;
    115 	else
    116 		time_req = acceptor_time_req;
    117 
    118 	major_status = _gss_acquire_mech_cred(minor_status, m, mn,
    119 					      GSS_C_CRED_PASSWORD, password,
    120 					      time_req, desired_mech,
    121 					      cred_usage, &mc);
    122 	if (major_status != GSS_S_COMPLETE) {
    123 		gss_release_cred(&junk, (gss_cred_id_t *)&new_cred);
    124 		return (major_status);
    125 	}
    126 
    127 	HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, mc, gmc_link);
    128 
    129 	if (actual_mechs || initiator_time_rec || acceptor_time_rec) {
    130 		OM_uint32 time_rec;
    131 
    132 		major_status = gss_inquire_cred(minor_status,
    133 						(gss_cred_id_t)new_cred,
    134 						NULL,
    135 						&time_rec,
    136 						NULL,
    137 						actual_mechs);
    138 		if (GSS_ERROR(major_status)) {
    139 			gss_release_cred(&junk, (gss_cred_id_t *)&new_cred);
    140 			return (major_status);
    141 		}
    142 		if (initiator_time_rec &&
    143 		    (cred_usage == GSS_C_INITIATE || cred_usage == GSS_C_BOTH))
    144 			*initiator_time_rec = time_rec;
    145 		if (acceptor_time_rec &&
    146 		    (cred_usage == GSS_C_ACCEPT || cred_usage == GSS_C_BOTH))
    147 			*acceptor_time_rec = time_rec;
    148 	}
    149 
    150 	*output_cred_handle = (gss_cred_id_t) new_cred;
    151 	return (GSS_S_COMPLETE);
    152 }
    153