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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* t_in_ccache.c: get creds while using input and/or armor ccaches */
/*
* Copyright (C) 2012 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.
*/
/*
* A test helper that exercises the input-ccache option, potentially in
* combination with armor-ccache options.
*/
#include "k5-int.h"
static void
bail_on_err(krb5_context context, const char *msg, krb5_error_code code)
{
const char *errmsg;
if (code) {
errmsg = krb5_get_error_message(context, code);
printf("%s: %s\n", msg, errmsg);
krb5_free_error_message(context, errmsg);
exit(1);
}
}
static krb5_error_code
prompter_cb(krb5_context ctx, void *data, const char *name,
const char *banner, int num_prompts, krb5_prompt prompts[])
{
/* Not expecting any actual prompts. */
if (num_prompts != 0) {
printf("too many prompts passed to prompter callback (%d), failing\n",
num_prompts);
exit(1);
}
return 0;
}
int
main(int argc, char **argv)
{
krb5_context ctx;
krb5_ccache in_ccache, out_ccache, armor_ccache;
krb5_get_init_creds_opt *opt;
char *user, *password, *armor_ccname = NULL, *in_ccname = NULL, *perr;
krb5_principal client;
krb5_creds creds;
krb5_flags fast_flags;
krb5_error_code ret;
int c;
while ((c = getopt(argc, argv, "I:A:")) != -1) {
switch (c) {
case 'A':
armor_ccname = optarg;
break;
case 'I':
in_ccname = optarg;
break;
}
}
if (argc - optind < 2) {
fprintf(stderr, "Usage: %s [-A armor_ccache] [-I in_ccache] "
"username password\n", argv[0]);
return 1;
}
user = argv[optind];
password = argv[optind + 1];
bail_on_err(NULL, "Error initializing Kerberos", krb5_init_context(&ctx));
bail_on_err(ctx, "Error allocating space for get_init_creds options",
krb5_get_init_creds_opt_alloc(ctx, &opt));
if (in_ccname != NULL) {
bail_on_err(ctx, "Error resolving input ccache",
krb5_cc_resolve(ctx, in_ccname, &in_ccache));
bail_on_err(ctx, "Error setting input_ccache option",
krb5_get_init_creds_opt_set_in_ccache(ctx, opt,
in_ccache));
} else {
in_ccache = NULL;
}
if (armor_ccname != NULL) {
bail_on_err(ctx, "Error resolving armor ccache",
krb5_cc_resolve(ctx, armor_ccname, &armor_ccache));
bail_on_err(ctx, "Error setting fast_ccache option",
krb5_get_init_creds_opt_set_fast_ccache(ctx, opt,
armor_ccache));
fast_flags = KRB5_FAST_REQUIRED;
bail_on_err(ctx, "Error setting option to force use of FAST",
krb5_get_init_creds_opt_set_fast_flags(ctx, opt,
fast_flags));
} else {
armor_ccache = NULL;
}
bail_on_err(ctx, "Error resolving output (default) ccache",
krb5_cc_default(ctx, &out_ccache));
bail_on_err(ctx, "Error setting output ccache option",
krb5_get_init_creds_opt_set_out_ccache(ctx, opt, out_ccache));
if (asprintf(&perr, "Error parsing principal name \"%s\"", user) < 0)
perr = "Error parsing principal name";
bail_on_err(ctx, perr, krb5_parse_name(ctx, user, &client));
ret = krb5_get_init_creds_password(ctx, &creds, client, password,
prompter_cb, NULL, 0, NULL, opt);
if (ret)
printf("%s\n", krb5_get_error_message(ctx, ret));
else
krb5_free_cred_contents(ctx, &creds);
krb5_get_init_creds_opt_free(ctx, opt);
krb5_free_principal(ctx, client);
krb5_cc_close(ctx, out_ccache);
if (armor_ccache != NULL)
krb5_cc_close(ctx, armor_ccache);
if (in_ccache != NULL)
krb5_cc_close(ctx, in_ccache);
krb5_free_context(ctx);
return ret ? (ret - KRB5KDC_ERR_NONE) : 0;
}
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