/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* tests/etinfo.c - Test harness for KDC etype-info behavior */
/*
* Copyright (C) 2015 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Send an AS-REQ to the KDC for a specified principal, with an optionally
* specified request enctype list. Decode the output as either an AS-REP or a
* KRB-ERROR and display the PA-ETYPE-INFO2, PA-ETYPE-INFO, and PA-PW-SALT
* padata in the following format:
*
* error/asrep etype-info2/etype-info/pw-salt enctype salt [s2kparams]
*
* enctype is omitted for PA-PW-SALT entries. salt is displayed directly;
* s2kparams is displayed in uppercase hex.
*/
#include "k5-int.h"
static krb5_context ctx;
static void
check(krb5_error_code code)
{
const char *errmsg;
if (code) {
errmsg = krb5_get_error_message(ctx, code);
fprintf(stderr, "%s\n", errmsg);
krb5_free_error_message(ctx, errmsg);
exit(1);
}
}
static void
display_etinfo(krb5_etype_info_entry **list, const char *l1, const char *l2)
{
krb5_etype_info_entry *info;
char etname[256];
unsigned int i;
for (; *list != NULL; list++) {
info = *list;
check(krb5_enctype_to_name(info->etype, TRUE, etname, sizeof(etname)));
printf("%s %s %s ", l1, l2, etname);
if (info->length != KRB5_ETYPE_NO_SALT)
printf("%.*s", info->length, info->salt);
else
printf("(default)");
if (info->s2kparams.length > 0) {
printf(" ");
for (i = 0; i < info->s2kparams.length; i++)
printf("%02X", (unsigned char)info->s2kparams.data[i]);
}
printf("\n");
}
}
static void
display_padata(krb5_pa_data **pa_list, const char *label)
{
krb5_pa_data *pa;
krb5_data d;
krb5_etype_info_entry **etinfo_list;
for (; pa_list != NULL && *pa_list != NULL; pa_list++) {
pa = *pa_list;
d = make_data(pa->contents, pa->length);
if (pa->pa_type == KRB5_PADATA_ETYPE_INFO2) {
check(decode_krb5_etype_info2(&d, &etinfo_list));
display_etinfo(etinfo_list, label, "etype_info2");
krb5_free_etype_info(ctx, etinfo_list);
} else if (pa->pa_type == KRB5_PADATA_ETYPE_INFO) {
check(decode_krb5_etype_info(&d, &etinfo_list));
display_etinfo(etinfo_list, label, "etype_info");
krb5_free_etype_info(ctx, etinfo_list);
} else if (pa->pa_type == KRB5_PADATA_PW_SALT) {
printf("%s pw_salt %.*s\n", label, (int)d.length, d.data);
} else if (pa->pa_type == KRB5_PADATA_AFS3_SALT) {
printf("%s afs3_salt %.*s\n", label, (int)d.length, d.data);
}
}
}
int
main(int argc, char **argv)
{
krb5_principal client;
krb5_get_init_creds_opt *opt;
krb5_init_creds_context icc;
krb5_data reply, request, realm;
krb5_error *error;
krb5_kdc_rep *asrep;
krb5_pa_data **padata;
krb5_enctype *enctypes, def[] = { ENCTYPE_NULL };
krb5_preauthtype pa_type = KRB5_PADATA_NONE;
unsigned int flags;
int master = 0;
if (argc < 2 && argc > 4) {
fprintf(stderr, "Usage: %s princname [enctypes] [patype]\n", argv[0]);
exit(1);
}
check(krb5_init_context(&ctx));
check(krb5_parse_name(ctx, argv[1], &client));
if (argc >= 3) {
check(krb5int_parse_enctype_list(ctx, "", argv[2], def, &enctypes));
krb5_set_default_in_tkt_ktypes(ctx, enctypes);
free(enctypes);
}
if (argc >= 4)
pa_type = atoi(argv[3]);
check(krb5_get_init_creds_opt_alloc(ctx, &opt));
if (pa_type != KRB5_PADATA_NONE)
krb5_get_init_creds_opt_set_preauth_list(opt, &pa_type, 1);
check(krb5_init_creds_init(ctx, client, NULL, NULL, 0, opt, &icc));
reply = empty_data();
check(krb5_init_creds_step(ctx, icc, &reply, &request, &realm, &flags));
assert(flags == KRB5_INIT_CREDS_STEP_FLAG_CONTINUE);
check(krb5_sendto_kdc(ctx, &request, &realm, &reply, &master, 0));
if (decode_krb5_error(&reply, &error) == 0) {
decode_krb5_padata_sequence(&error->e_data, &padata);
if (error->error == KDC_ERR_PREAUTH_REQUIRED) {
display_padata(padata, "error");
} else if (error->error == KDC_ERR_MORE_PREAUTH_DATA_REQUIRED) {
display_padata(padata, "more");
} else {
fprintf(stderr, "Unexpected error %d\n", (int)error->error);
return 1;
}
krb5_free_pa_data(ctx, padata);
krb5_free_error(ctx, error);
} else if (decode_krb5_as_rep(&reply, &asrep) == 0) {
display_padata(asrep->padata, "asrep");
krb5_free_kdc_rep(ctx, asrep);
} else {
abort();
}
krb5_free_data_contents(ctx, &request);
krb5_free_data_contents(ctx, &reply);
krb5_free_data_contents(ctx, &realm);
krb5_get_init_creds_opt_free(ctx, opt);
krb5_init_creds_free(ctx, icc);
krb5_free_principal(ctx, client);
krb5_free_context(ctx);
return 0;
}