/*-
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <dfr@rabson.org>
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/types.h>
#include <sys/syscall.h>
#include <sys/module.h>
#include <stdio.h>
#include <string.h>
#include <err.h>
#include <unistd.h>
#include <stdlib.h>
#include <krb5.h>
#include <gssapi/gssapi.h>
#include <gssapi/gssapi_krb5.h>
struct gsstest_2_args {
int step; /* test step number */
gss_buffer_desc input_token; /* token from userland */
gss_buffer_desc output_token; /* buffer to receive reply token */
};
struct gsstest_2_res {
OM_uint32 maj_stat; /* maj_stat from kernel */
OM_uint32 min_stat; /* min_stat from kernel */
gss_buffer_desc output_token; /* reply token (using space from gsstest_2_args.output) */
};
static void
report_error(gss_OID mech, OM_uint32 maj, OM_uint32 min)
{
OM_uint32 maj_stat, min_stat;
OM_uint32 message_context;
gss_buffer_desc buf;
printf("major_stat=%d, minor_stat=%d\n", maj, min);
message_context = 0;
do {
maj_stat = gss_display_status(&min_stat, maj,
GSS_C_GSS_CODE, GSS_C_NO_OID, &message_context, &buf);
printf("%.*s\n", (int)buf.length, (char *) buf.value);
gss_release_buffer(&min_stat, &buf);
} while (message_context);
if (mech) {
message_context = 0;
do {
maj_stat = gss_display_status(&min_stat, min,
GSS_C_MECH_CODE, mech, &message_context, &buf);
printf("%.*s\n", (int)buf.length, (char *) buf.value);
gss_release_buffer(&min_stat, &buf);
} while (message_context);
}
}
int
main(int argc, char **argv)
{
struct module_stat stat;
int mod;
int syscall_num;
stat.version = sizeof(stat);
mod = modfind("gsstest_syscall");
if (mod < 0) {
fprintf(stderr, "%s: kernel support not present\n", argv[0]);
exit(1);
}
modstat(mod, &stat);
syscall_num = stat.data.intval;
switch (atoi(argv[1])) {
case 1:
syscall(syscall_num, 1, NULL, NULL);
break;
case 2: {
struct gsstest_2_args args;
struct gsstest_2_res res;
char hostname[512];
char token_buffer[8192];
OM_uint32 maj_stat, min_stat;
gss_ctx_id_t client_context = GSS_C_NO_CONTEXT;
gss_cred_id_t client_cred;
gss_OID mech_type = GSS_C_NO_OID;
gss_buffer_desc name_buf, message_buf;
gss_name_t name;
int32_t enctypes[] = {
ETYPE_DES_CBC_CRC,
ETYPE_ARCFOUR_HMAC_MD5,
ETYPE_ARCFOUR_HMAC_MD5_56,
ETYPE_AES256_CTS_HMAC_SHA1_96,
ETYPE_AES128_CTS_HMAC_SHA1_96,
ETYPE_DES3_CBC_SHA1,
};
int num_enctypes = sizeof(enctypes) / sizeof(enctypes[0]);
int established;
int i;
for (i = 0; i < num_enctypes; i++) {
printf("testing etype %d\n", enctypes[i]);
args.output_token.length = sizeof(token_buffer);
args.output_token.value = token_buffer;
gethostname(hostname, sizeof(hostname));
snprintf(token_buffer, sizeof(token_buffer),
"nfs@%s", hostname);
name_buf.length = strlen(token_buffer);
name_buf.value = token_buffer;
maj_stat = gss_import_name(&min_stat, &name_buf,
GSS_C_NT_HOSTBASED_SERVICE, &name);
if (GSS_ERROR(maj_stat)) {
printf("gss_import_name failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
maj_stat = gss_acquire_cred(&min_stat, GSS_C_NO_NAME,
0, GSS_C_NO_OID_SET, GSS_C_INITIATE, &client_cred,
NULL, NULL);
if (GSS_ERROR(maj_stat)) {
printf("gss_acquire_cred (client) failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
maj_stat = gss_krb5_set_allowable_enctypes(&min_stat,
client_cred, 1, &enctypes[i]);
if (GSS_ERROR(maj_stat)) {
printf("gss_krb5_set_allowable_enctypes failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
res.output_token.length = 0;
res.output_token.value = 0;
established = 0;
while (!established) {
maj_stat = gss_init_sec_context(&min_stat,
client_cred,
&client_context,
name,
GSS_C_NO_OID,
(GSS_C_MUTUAL_FLAG
|GSS_C_CONF_FLAG
|GSS_C_INTEG_FLAG
|GSS_C_SEQUENCE_FLAG
|GSS_C_REPLAY_FLAG),
0,
GSS_C_NO_CHANNEL_BINDINGS,
&res.output_token,
&mech_type,
&args.input_token,
NULL,
NULL);
if (GSS_ERROR(maj_stat)) {
printf("gss_init_sec_context failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
if (args.input_token.length) {
args.step = 1;
syscall(syscall_num, 2, &args, &res);
gss_release_buffer(&min_stat,
&args.input_token);
if (res.maj_stat != GSS_S_COMPLETE
&& res.maj_stat != GSS_S_CONTINUE_NEEDED) {
printf("gss_accept_sec_context (kernel) failed\n");
report_error(mech_type, res.maj_stat,
res.min_stat);
goto out;
}
}
if (maj_stat == GSS_S_COMPLETE)
established = 1;
}
message_buf.value = "Hello world";
message_buf.length = strlen((char *) message_buf.value);
maj_stat = gss_get_mic(&min_stat, client_context,
GSS_C_QOP_DEFAULT, &message_buf, &args.input_token);
if (GSS_ERROR(maj_stat)) {
printf("gss_get_mic failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
args.step = 2;
syscall(syscall_num, 2, &args, &res);
gss_release_buffer(&min_stat, &args.input_token);
if (GSS_ERROR(res.maj_stat)) {
printf("kernel gss_verify_mic failed\n");
report_error(mech_type, res.maj_stat, res.min_stat);
goto out;
}
maj_stat = gss_verify_mic(&min_stat, client_context,
&message_buf, &res.output_token, NULL);
if (GSS_ERROR(maj_stat)) {
printf("gss_verify_mic failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
maj_stat = gss_wrap(&min_stat, client_context,
TRUE, GSS_C_QOP_DEFAULT, &message_buf, NULL,
&args.input_token);
if (GSS_ERROR(maj_stat)) {
printf("gss_wrap failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
args.step = 3;
syscall(syscall_num, 2, &args, &res);
gss_release_buffer(&min_stat, &args.input_token);
if (GSS_ERROR(res.maj_stat)) {
printf("kernel gss_unwrap failed\n");
report_error(mech_type, res.maj_stat, res.min_stat);
goto out;
}
maj_stat = gss_unwrap(&min_stat, client_context,
&res.output_token, &message_buf, NULL, NULL);
if (GSS_ERROR(maj_stat)) {
printf("gss_unwrap failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
gss_release_buffer(&min_stat, &message_buf);
maj_stat = gss_wrap(&min_stat, client_context,
FALSE, GSS_C_QOP_DEFAULT, &message_buf, NULL,
&args.input_token);
if (GSS_ERROR(maj_stat)) {
printf("gss_wrap failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
args.step = 4;
syscall(syscall_num, 2, &args, &res);
gss_release_buffer(&min_stat, &args.input_token);
if (GSS_ERROR(res.maj_stat)) {
printf("kernel gss_unwrap failed\n");
report_error(mech_type, res.maj_stat, res.min_stat);
goto out;
}
maj_stat = gss_unwrap(&min_stat, client_context,
&res.output_token, &message_buf, NULL, NULL);
if (GSS_ERROR(maj_stat)) {
printf("gss_unwrap failed\n");
report_error(mech_type, maj_stat, min_stat);
goto out;
}
gss_release_buffer(&min_stat, &message_buf);
args.step = 5;
syscall(syscall_num, 2, &args, &res);
gss_release_name(&min_stat, &name);
gss_release_cred(&min_stat, &client_cred);
gss_delete_sec_context(&min_stat, &client_context,
GSS_C_NO_BUFFER);
}
break;
}
case 3:
syscall(syscall_num, 3, NULL, NULL);
break;
case 4:
syscall(syscall_num, 4, NULL, NULL);
break;
}
return (0);
out:
return (1);
}
plain